US20030146212A1 - Shipping container - Google Patents
Shipping container Download PDFInfo
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- US20030146212A1 US20030146212A1 US10/200,786 US20078602A US2003146212A1 US 20030146212 A1 US20030146212 A1 US 20030146212A1 US 20078602 A US20078602 A US 20078602A US 2003146212 A1 US2003146212 A1 US 2003146212A1
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- United States
- Prior art keywords
- shipping container
- container according
- floor
- bottom cross
- cross members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 239000002023 wood Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 35
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 19
- 239000011120 plywood Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 2
- 229910000870 Weathering steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- -1 thin wooden plate Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
- B65D88/121—ISO containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/027—Corrugated or zig-zag structures; Folded plate
Abstract
The present invention relates to a shipping container. By making improvements on its structure: to add longitudinal members in the base frame, and/or to increase the wave height D between the wave crest and wave trough of the corrugated plate of the side panels, and/or to adopt steel plate in the floor, on the premise of passing ISO test, it provides a container which is lighter in tare weight, less in material consumed and lower in production cost.
Description
- The present invention relates to a shipping container, and more particularly, to the improvements on the structure of a container.
- Containers were first used in cargo transportation in U.S.A. in 1956. After more than 40 years development, containers have been used worldwide. In the course of the development of the container, designers and manufacturers are devoted to improvements on its structure, so as to improve the functions of the container, reduce the material consumed and the production cost.
- As shown in FIGS. 1, 1A,1B, 1C, a conventional shipping container consists of a pair of side walls 1, a
rear end 2, afront end 3, a roof 4, afloor 5 and abase frame 6, where thebase frame 6 and thefloor 5 constitute the bearer for the cargoes in the container which is also called the base assembly. - As shown in FIGS. 2, 3,4 and 5, the conventional container base frame mainly comprises two
bottom side rails 601, numbers ofbottom cross members 602, where the two ends of thebottom cross members 602 are welded to thebottom side rail 601 respectively, constituting a rigid integral frame structure. In the conventional container, plywood floor 5 (28 mm) is paved on thebottom cross members 602, and joined with thebottom cross members 602 byscrews 603, theplywood floor 5 and thebase frame 6 make up the bearer for the cargoes in the container. - To pass the International Organization for Standardization (ISO) test for containers, the cross members need to be arranged in high density with quantities of beams, and the bottom cross members should be made of thick steel plates to satisfy the strength requirement, therefore, large quantity of material is consumed. In addition, the floor is made of special hard wood. On one hand, there exist several shortcomings such as: a great diversity in quality, expensive price, high cost, and easily influenced by possible shortage of plywood floor supplies. On the other hand, since it is thicker (28 mm) in thickness, the plywood floor is heavier in weight, and the tare weight of the container is heavier accordingly.
- The side panel of the container is usually made of corrugated plate. As shown in FIGS. 6 and 7, the cross section of the conventional side panels is a corrugated structure made up by a number of identical wave crests, slopes and wave troughs, where the slope projection length I on the wave crest plane is relatively longer and the wave height D is relatively shorter. The conventional corrugated structure of the side panels is not advantageous for enhancing the bending resistant capability of the corrugated plate, therefore, thicker steel sheet and high strength material have to be adopted to pass ISO test. Use of high strength material drives up the material cost and use of thicker steel sheet not only increases material cost and tare weight, but also decreases the loading capacity and efficiency.
- The main object of the present invention is to overcome the shortcomings of the conventional container, and by making improvements on its structure, to provide a container which is lighter in tare weight, less in material consumed and lower in production cost.
- The aim of the present invention can be achieved by improvements on its base frame as follows:
- A container comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said base frame further includes at least one longitudinal member, said longitudinal member is in parallel with said bottom side rails, and connected with at least two of the bottom cross members.
- Said base frame may include at least two longitudinal members, the space between two longitudinal members is no longer than 600 mm, and it is preferred to be no longer than 180 mm.
- Said longitudinal members may be shorter than said bottom side rails, and only distributed within partial area of the entire base frame, i.e., said longitudinal members only cross some of the bottom cross members.
- Said base frame may further include supporting beams tilted installed at the corner of the cross made up by the longitudinal members and the bottom cross members.
- The aim of the present invention can be achieved by improvements on its floor as follows:
- A container comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said floor is made up of corrugated steel floor.
- The aim of the present invention can be achieved by improvements on its side panels as follows:
- A container comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; the cross section of said side walls is a corrugated structure made up by a number of identical wave crests, slopes and wave troughs, wherein the wave height D between said wave crest and wave trough is 36<D≦54 mm.
- The length of said slope projection on said wave trough plane is 0≦I≦25 mm the thickness of said side panel is 0.8-1.2 mm.
- FIG. 1, FIG. 1A, FIG. 1B and FIG. 1C show respectively the front, left, right and top views of a conventional container;
- FIG. 2 is a partial top view of the base frame and plywood floor of the conventional container;
- FIG. 3 is a cross sectional view taken along the A-A line of FIG. 2;
- FIG. 4 is a cross sectional view taken along the B-B line of FIG. 2;
- FIG. 5 is a schematic diagram showing the connecting structure between the bottom cross members and the plywood floor of the base assembly shown in FIG. 2;
- FIG. 6 is a schematic diagram of the side panels of the conventional container;
- FIG. 7 is a cross sectional view taken along the A-A line of FIG. 6;
- FIG. 8 is a partial top view of the base frame and plane steel floor in the first preferred embodiment according to the present invention;
- FIG. 9 is a cross sectional view taken along the A-A line of FIG. 8;
- FIG. 10 is a partial enlarged perspective view illustrating a kind of connecting structure between the bottom cross members and the longitudinal members of the base frame shown in FIG. 8;
- FIG. 11 is a partial enlarged perspective view illustrating another kind of connecting structure between the bottom cross members and the longitudinal members of the base frame shown in FIG. 8;
- FIG. 12 is a cross sectional view taken along the B-B line of FIG. 8;
- FIG. 13 is a schematic diagram illustrating the connecting structure between the bottom cross members and the plywood floor of the base assembly shown in FIG. 8;
- FIG. 14 is a front view of the corrugated plate used in the side panels of the second preferred embodiment according to the present invention;
- FIG. 15 is a cross sectional view taken along the A-A line of FIG. 14;
- FIG. 16 is a cross sectional view of the third preferred embodiment according to the present invention;
- FIG. 17 is a partial top view of the base frame and corrugated steel floor of the container shown in FIG. 16;
- FIG. 18 is a cross sectional view taken along the A-A line of FIG. 17;
- FIG. 19 is a partial perspective view illustrating a kind of base frame which is made up by C-shaped bottom cross members and corrugated steel floor;
- FIG. 20 is a partial perspective view illustrating another kind of base frame which is made up by L-shaped bottom cross members and corrugated steel floor;
- FIG. 21 is a cross sectional view taken along the B-B line of FIG. 17;
- FIG. 22 is a schematic diagram illustrating the connecting structure between the bottom cross members as shown in FIG. 19 and the corrugated steel plates in the container shown in FIG. 16;
- FIG. 23 is a cross sectional view illustrating a kind of corrugated steel plate with stuffing in its grooves in the third preferred embodiment according to the present invention;
- FIG. 24 is a cross sectional view illustrating another kind of corrugated steel plate with thin plate paved on it in the third preferred embodiment according to the present invention;
- FIG. 25 is a partial perspective view illustrating floor structure in the third preferred embodiment according to the present invention;
- FIG. 26 is a perspective partial cross sectional view illustrating the continuous corrugated steel floor with stuffing in its grooves in the third preferred embodiment according to the present invention;
- FIG. 27 is a perspective partial cross sectional view illustrating the disconnected corrugated steel floor with stuffing in its grooves in the third preferred embodiment according to the present invention;
- FIG. 28 is a partial top view illustrating the base frame and plane steel plate in the fourth preferred embodiment according to the present invention;
- FIGS. 29, 30,31, 32 are schematic diagrams of different kinds of base frames in the fourth embodiment according to the present invention;
- FIG. 33 is a schematic diagram illustrating a kind of connecting structure between the longitudinal members, supporting beams and bottom cross members in the fourth embodiment according to the present invention.
- Embodiment 1:
- In this embodiment, the improvements mainly concentrate on the base frame and floor of the container.
- As shown in FIG. 8, the base frame according to this embodiment mainly comprises two bottom side rails611, several
longitudinal members 613 and severalbottom cross members 612. The both ends of thebottom cross members 612 are respectively welded to the side of the bottom side rails 611, thelongitudinal members 613 are crossed and welded to thebottom cross members 612, constituting an integral rigid frame structure. Compared to a conventional container, in the new design, severallongitudinal members 613 are added in the base frame, and thinner plane steel plate is adopted in the floor. Therefore, on the premise of passing ISO test, the space L1 between two bottom cross members is far larger than that (L0, as shown in FIG. 2) of the conventional one, thus, the quantity of the bottom cross members are greatly reduced. - As shown in FIG. 8 and FIG. 9, at least two
longitudinal members 613 are crossed and welded to somebottom cross members 612, and thelongitudinal members 613 are distributed along the longitudinal direction of thebottom cross members 612. To enable the longitudinal members to pass the ISO test with a small sectional area H2, B2 and thinner thickness T2, space L2 between the longitudinal members should be no larger than 600 mm, better preferred to be no larger than 300 mm, and best preferred to be equal to the width of thefloor test wheel 400 of a container, which is 180 mm, so than at least one longitudinal member will directly support thefloor test wheel 400. In addition, the space L1 between thebottom cross members 612 should not be made too large, and should be reasonably designed. - Various link structures can be adopted for the
longitudinal members 613 and thebottom cross members 612. Two kinds of representative link structures are given below: - As shown in FIG. 10, some
slots 614 with openings are made on thebottom cross members 612 in regular interval, the entirelongitudinal members 613 can pass throughslots 614 and be welded to thebottom cross members 612. - As shown in FIG. 11, the
longitudinal members 613 are disconnected and then welded to thebottom cross members 612. - In the structures described above, both the
bottom cross members 612 and thelongitudinal members 613 can be made of steel bars whose cross section can be L-shape, I-shape, T-shape, U-shape, C-shape or square shape. - In this embodiment, the floor is made of
steel plate 510 no thicker than 4 mm. As shown in FIG. 13, thebottom cross members 612 of the base frame and thesteel plate 510 are connected by welding. As shown in FIG. 9 and FIG. 12, the bottom side rails 611,longitudinal members 613,bottom cross members 612 and thesteel plate 510 are welded together, constituting an integral rigid bearer for cargoes in the container. - This invention has following advantages:
- (a) The height H1 of the
bottom cross members 612 is larger than that (H0, as shown in FIG. 4) of a conventional one, which enables the material distribution of the bottom cross members more advantageous for increasing the bending resistance of the bottom cross members. - (b) Since the
bottom cross members 612 and thesteel floor 510 are welded into an integral structure, the materials around the spot where thesteel floor 510 and thebottom cross members 612 are welded will greatly improve the bending resistance of the bottom cross members. - Therefore, on the premise of passing the ISO test, the thickness T1 of the
bottom cross members 612 according to this embodiment is thinner, normally it is 2 3 mm, while the thickness TO of the conventionalbottom cross members 602 is thicker, normally it is 4˜4.5 mm. In this embodiment, thebottom cross members 612 have similar base width B1, higher height H1, and comprehensively lighter weight as compared to that of the conventional one. - The steel floor is made of common steel. Compared to conventional plywood floor, it has advantages such as light weight, low cost and stable market supply. On the premise of passing the ISO test, in the new designed base frame, the quantity and the tare weight of the bottom cross members are reduced. Moreover, in the new design, since steel floor is adopted instead of plywood floor, the material cost is decreased. Besides, by using steel floor instead of conventional plywood floor, the influence to the production and cost of the container from the possible shortage of the wood supply can be avoided.
- Embodiment 2:
- In this embodiment, the improvements mainly concentrate on the structure of the side panels of the container.
- To pass the ISO strength test for the side panels of the container, the corrugated plate for the side panels should possess certain bending resistant capability, which depends on the bending resistant section modulus W of the corrugated plate and the yield strength of the corrugated plate material. The larger the bending resistant section modulus W is, the better the bending resistant capability of the corrugated plate is. So it is with the yield strength.
- In the conventional container, the corrugation depth (wave height) D of the corrugated plate is too small, and the projection length I of the slope on wave crest plane is too high, which is not advantageous for material to be thoroughly distributed in wave crests and troughs on the corrugated plate, and results in small bending resistant section modulus W. Therefore, Therefore, thicker steel sheet and higher strength material need to be used in the conventional corrugated plate to pass ISO strength test.
- As shown in FIG. 14 and FIG. 15, on the premise of meeting the ISO standard dimension requirement for the container, the corrugation depth D of the corrugated plate is increased and the projection length I of the slope on the wave crest plane is reduced, so as to appropriately increase the width B of wave crest and the width C of the wave trough, improve the material distribution in wave crests and troughs, and thereby to improve the bending resistant section modulus W of the corrugated plate. In this way, the corrugated plate for the new side panel is equivalent to the corrugated plate of the conventional side panel in bending resistant strength, thus achieving the end of substituting expensive, high strength material with cheap, low strength material, reducing material cost, corrugated plate thickness and tare weight.
- The corrugation depth D of the corrugated plate for the new side panel is 36<D£54 mm projection length I of the slope in the wave crest plane is 0≦I≦25 mm, which is better preferred to be within 12-15 mm, and the thickness of the side panel is within 0.8-1.2 mm.
- A comparison of dimension and material of corrugated plates for the conventional side panel and two examples of this embodiment is given in the table below:
Corrugation dimension mm Corrugated plate Thickness material Corrugation T of Yield Corrugation shape Wave Wave depth Corrugate strength and material crest B trough C D Slope I d plate Material Kg/mm2 Conventional 72 70 36 68 1.6 Corten 35 corrugated plate A New P1 78 78 38 15 1.2 SS41 25 corrugated P2 78 78 45 12 1 SS41 25 plate - It can be seen from the data in the table, the slope projection length I of the corrugated plate for the conventional side panel is too big 68 mm, while corrugated depth D is comparatively small 36 mm. To pass ISO test, the thickness T of the corrugated plate has to be at least 1.6 mm and steel sheet Corten A of relatively higher strength yield strength 35 Kg/mm2 has to be used.
- The corrugated plate P1 for the new side panel appropriately increases wave crest and wave trough size by adding the corrugated plate depth D 38 mm and reducing the slope size I 15 mm. The corrugated plate made of lower strength steel sheet SS41 yield strength 25 Kg/mm2 and 1.2 mm in thickness T is good enough to provide equivalent bending resistant strength as the corrugated plate for the conventional side panel.
- The corrugated plate P2 for the new side panel appropriately increases wave crest and wave trough size, by adding corrugated plate depth D 42 mm and reducing slope dimension I 12 mm. The corrugated plate made of lower strength steel sheet SS41 yield strength 25 Kg/mm2 and 1 mm in thickness T is good enough to provide equivalent bending resistant strength as the corrugated plate for the traditional side panel.
- It can be seen that, by adjusting the wave depth D and the projection length I of the slope on the wave crest plane, the corrugated plate for the new side panel can achieve the end of substituting high strength material with low strength material, reducing the material cost of the container, the thickness of the corrugated plate, the weight of the container and improve the maximum pay load of the container.
- Embodiment 3:
- In this embodiment, the improvements mainly concentrate on the floor structure of the container.
- As shown in FIG. 16, the container according to this embodiment consists of a pair of
side walls 130, a rear end, a front end, aroof 430, abase frame 630 and acorrugated steel floor 530. - As shown in FIGS. 17, 18,21 and 22, the base frame of the container mainly comprises two bottom side rails 631 and several
bottom cross members 632; both ends of thebottom cross members 632 are welded to the side of the bottom side rails 631 respectively;corrugated steel plate 530 is paved on thebottom cross members 632, and welded on thebottom cross members 632 and two bottom side rails 631, constituting a rigid bearer for cargoes in the container. - Since steel is much better in synthetic mechanics performance than wood, and corrugated floor has good bending resistant capability, which are specially advantageous for satisfying loading requirements and application features of container floor, the
corrugated steel floor 530 is better in mechanics performance and has higher load bearing strength than the prior art plywood floor. With the corrugatedsteel floor 530 adopted, thinner steel sheet and less material are required to achieve high bending resistant capability. Besides, the welding of the corrugatedsteel floor 530 with thebottom cross members 632 enhances the bending resistant strength ofbottom cross members 632, reduces cross sectional dimension, weight and cost. Thecorrugated floor 530 according to this embodiment made of 2 mm thick steel sheet is good enough to meet strength requirement. - In the above base assembly,
bottom cross members 632 and thecorrugated steel floor 530 can be joined by many ways, and the two preferred ways are given below: - As shown in FIG. 19, the
corrugated steel floor 530 is directly paved on thebottom cross members 632, and form a rigid integrated structure either by welding at the external sides or by rivet. Thebottom cross members 632 can be made of steel of C-shaped cross sectional form. - FIG. 20 illustrates another way of connecting the
bottom cross members 632 with the corrugated steel floor 530: the cross sectional form of thebottom cross members 632 is L-shaped, at the edge of thebottom cross member 632, there installed manyconvex teeth 633 matching with the concave grooves of thecorrugated floor 530, helping the bottom cross members to be welded to the corrugated steel floor. - In above structures, the cross sectional form of the
bottom cross members 632 can be L-shape, I-shape, T-shape, U-shape, C-shape or rectangle shape to suit the demands of various base frames. - Compared to the prior art, the base assembly of this embodiment possesses following advantages
- (a) By substituting the prior art plywood floor with the corrugated steel floor, the rigidity and strength of the floor is enhanced, and thereby the load bearing capability of the base assembly is enhanced.
- (b) Since the rigidity and strength of the corrugated steel floor is enhanced, the space between cross members are widened, and thereby the quantity and amount of cross members are enhanced.
- (c). Since the steel floor and cross members are welded into an integrated entity, the material around the welding spot will greatly enhance the bending resistant strength of the cross members.
- Therefore, on the premise of passing ISO test, the thickness of the bottom cross member according to this embodiment is 3 mm thick, while it has to be 4˜4.5 mm thick for bottom cross members of the prior art base assembly. The use of corrugated steel floor improves the bending resistant capability of bottom cross members, that is why the amount and weight of bottom cross members in this embodiment is much smaller than that of the prior art base assembly.
- To further meet the demands of various applications, make the surface of the corrugated floor as plain as the plywood floor for the ease of cargo loading the floor structure of this embodiment can be improved in following ways
- As shown in FIG. 23, stuffing531 can be filled in the concave grooves of the corrugated floor of the base assembly to make the surface of the corrugated floor flat. Stuffing 531 can be made of various kinds of materials such as wood, foam, plastics or other non-metal materials.
- As shown in FIG. 24, a layer of
thin plate 532 can be paved on the surface of the corrugated floor of the base assembly as an alternative way to make the surface of the corrugated floor flat. Thethin plate 532 can be made of a variety of materials, such as thin wooden plate, composite plate or steel plate. - In order to fasten the cargoes in the container, some pieces of wood or other non-metallic materials may be retained on the
floor 530. Following improvements on the structure of the floor may be adopted: - As shown in FIG. 25, the
floor 530 consists ofcorrugated steel floor 533 in the main, and several plywood bars or other non metallic stuffing 531 such as wood, foam, or plastics, which are put together and paved on thebase frame 630 of the container, constituting a rigid base assembly for loading. Thefloor 530 andbase frame 630 may be jointed by welding, riveting, or connecting via screws. - As shown in FIG. 26, which is a partial enlarged view of FIG. 25, the
corrugated steel floor 533 is continuous at the position where the nonmetallic stuffing 531 is filled. The nonmetallic stuffing 531 is completely held within an integrated concavity 534 of the corrugatedsteel floor 533. - As shown in FIG. 27, the
corrugated steel floor 533 is disconnected at the position where the nonmetallic stuffing 531 is filled. The nonmetallic stuffing 531 is held within a concavity 534 which is formed by two adjacent disconnectedcorrugated floors 533 and has an opening 535 at its bottom. - As shown in FIG. 25, FIG. 26 and FIG. 27, the
steel floor 533 is non uniform corrugated steel floor, which is formed by modifying the corrugated steel floor structure in partial. The wavelength of each corrugation is not equal to each other, and there is a wider concavity 534 at regular intervals, within which the nonmetallic stuffing 531 is installed. - The grooves with non metallic stuffing filled in may be or not be in a certain proportion to the grooves without non metallic stuffing filled in.
- Alternatively, the steel floor according to this embodiment may be common uniform corrugated steel floor, namely, the wavelength of each corrugation is equal to each other, where the grooves of the corrugated steel floor are made of the concavities of the corrugated steel floor itself, and the non metallic stuffing may be installed at intervals within the predetermined concavities.
- Embodiment 4:
- In this embodiment, the improvements mainly concentrate on the base frame of the container.
- As shown in FIG. 28 and FIG. 29, in a kind of structure of this embodiment, there is one or several
longitudinal members 340 vertically installed between thebottom cross members 240, and there are supportingbeams 440 tilted installed at the corner of the cross made up by thelongitudinal members 340 and thebottom cross members 240. And the distribution intensity of the supportingbeams 440 may be varied in different position of the base frame according to the actual loading situation of the container. Compared with the conventional base frame of the shipping container, one or severallongitudinal members 340 and tilted supportingbeams 440 are added in the base frame. Therefore, with the base frame strength requirement fulfilled, the space L1 between two cross members of the base frame may be far larger than that (L0) of the conventional one. Thus, compared with the conventional container base frame, the numbers of thecross members 240 are greatly reduced. - As shown in FIG. 30 and FIG. 31, in another kind of structure of this embodiment,
longitudinal beams 340 are shorter than bottom side rails, and vertically installed between adjacent or non adjacentbottom cross members 240. Conventionally, manufacturer installed a whole length of longitudinal beam on the base frame, the whole length of the longitudinal beam is in parallel with and of the same length as thebottom side rail 140; while in this embodiment, the habitual thought is broken through, the longitudinal beam is installed in segment regularly or irregularly, namely, distributed non continuously. - In another kind of structure of this embodiment, only one end of the bottom cross member is connected with the bottom side rail, and the other end is connected with the longitudinal member. As shown in FIG. 32, one end of several
bottom cross members 240 are disconnected from the two bottom side rails 140 crisscross, eachlongitudinal member 340 is connected in parallel between more than two disconnectedbottom cross members 240, the internal point of thelongitudinal member 340 is connected with the disconnected end of onebottom cross member 240, while the two ends of thelongitudinal member 340 are connected with the internal point of thebottom cross member 240. - The
longitudinal members 340 and thebottom cross members 240 are jointed by crossing, and the embodiments of the crossing structure may be various. Apart from the two kinds of commonly used crossing structures described in embodiment 1 of this invention, another kind of connecting structure may be adopted as shown in FIG. 33:several beams - In the above mentioned container base frames, the
bottom cross members 240,longitudinal members 340 and tilted supportingbeams 440 may be made of steel beams with the cross sections such as L shape, I shape, T shape, U shape, C shape or square shape. In order to save material, the cross section of thelongitudinal members 340 should be less than that of the bottom cross beams 240, and the longitudinal members are usually made of beams with smaller thickness and width. - Comparing to the conventional design, the container base frame according to this embodiment has other advantages as follows:
- a. The height H1 of the
bottom cross members 240 is higher than that of the conventional one, which makes the cross section material distribution of thebottom cross members 240 more favorable for increasing its bending resistance; - b. The
bottom cross members 240, thelongitudinal members 340, the supportingbeams 440 and thesteel floor 540 are welded together into an integral entity, which makes the strength of the materials around the welding area increased, and the bending resistance of the base frame is greatly improved; - The steel floor is made of common steel. Compared with conventional plywood floor, it has advantages such as lightweight, low cost and stable supplies from the market. On the premise of passing ISO test, in the new container base frame, the quantity of the bottom cross members used is reduced, the longitudinal members can be installed with more flexibility and the dimension of its cross section is smaller. Therefore, the material consumed is greatly reduced and the material cost of the new type container base frame is reduced compared with that of the conventional one. In addition, the conventional plywood floor is replaced by the steel floor, which prevents the influence to the production and cost of the container from the possible shortage of plywood floor supplies. With the application of the container base frame and the steel floor according to this embodiment, the targets of reducing material cost and tare weight of a container, and increasing its loading capacity are successfully achieved.
Claims (37)
1. A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said base frame further includes at least one longitudinal member, said longitudinal member is in parallel with said bottom side rails, and connected with at least two of the bottom cross members.
2. A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; said base frame further comprising two longitudinal bottom side rails and numbers of parallel bottom cross members, wherein said floor is made up of corrugated steel floor.
3. A shipping container, comprising a pair of side walls, a rear end, a front end, a roof, a floor and a base frame; the cross section of said side walls is a corrugated structure made up by a number of identical wave crests, slopes and wave troughs, wherein the wave height D between said wave crest and wave trough is 36<D≦54 mm.
4. A shipping container according to any of claims 1-3, wherein said base frame may include at least two longitudinal members.
5. A shipping container according to claim 4 , wherein the space between two longitudinal members is no longer than 600 mm.
6. A shipping container according to claim 5 , wherein the space between two longitudinal members is no longer than 300 mm.
7. A shipping container according to claim 6 , wherein the space between two longitudinal members is no longer than 180 mm.
8. A shipping container according to any of claims 1-3, wherein some slots with openings are made on the bottom cross members in regular interval, the entire longitudinal members pass through said slots and be welded to the bottom cross members.
9. A shipping container according to any of claims 1-3, wherein the longitudinal members are disconnected and then welded to the bottom cross members.
10. A shipping container according to any of claims 1-3, wherein said longitudinal members may be distributed non continuously.
11. A shipping container according to claim 10 , wherein said longitudinal members are shorter than said bottom side rails, and only distributed within partial area of the entire base frame.
12. A shipping container according to any one of claims 1-3, wherein said base frame may further include supporting beams tilted installed at the corner of the cross made up by the longitudinal members and the bottom cross members.
13. A shipping container according to claim 12 , wherein the cross section area of said bottom cross members is larger than that of the longitudinal members.
14. A shipping container according to any one of claim 1-3, wherein only one end of said bottom cross member is connected with said bottom side rail, the other end is connected with said longitudinal member.
15. A shipping container according to any one of claims 1-3, wherein said floor is made up of corrugated steel floor which is directly paved on said bottom cross members, and welded to the external side of the bottom cross members, constituting an integral rigid structure.
16. A shipping container according to claim 15 , wherein said bottom cross members may be made of steel bars of C-shape cross sectional form.
17. A shipping container according to claim 15 , wherein the cross sectional form of the bottom cross members is L-shaped, at the edge of the bottom cross member, there installed many convex teeth matching with the concave grooves of the corrugated floor, helping the bottom cross members to be welded to the corrugated steel floor.
18. A shipping container according to claim 15 , wherein there are non metallic stuffing filled within all the grooves of the corrugated steel floor.
19. A shipping container according to claim 18 , wherein said non metallic stuffing may be made of wood, or foam, or plastics.
20. A shipping container according to claim 15 , wherein thin plate is paved on the corrugated steel floor.
21. A shipping container according to claim 20 , wherein said thin plate may be made of thin wooden plate, composite plate or steel plate.
22. A shipping container according to claim 15 , wherein said non metallic stuffing is filled within some of the grooves of the corrugated steel floor.
23. A shipping container according to claim 22 , wherein the grooves with non metallic stuffing filled in are in a certain proportion to the grooves without non metallic stuffing filled in.
24. A shipping container according to claim 22 , wherein the grooves with non metallic stuffing filled in are not in a certain proportion to the grooves without non metallic stuffing filled in.
25. A shipping container according to claim 18 or 22, wherein the non metallic stuffing filled in the grooves of the corrugated steel floor is continuously distributed along the grooves.
26 A shipping container according to claim 18 or 22, wherein the non metallic stuffing filled in the grooves of the corrugated steel floor is incontinuously distributed along the grooves.
27. A shipping container according to claim 18 or 22, wherein said corrugated steel floor may be continuous, the non metallic stuffing completely filled in the grooves of the corrugated steel floor.
28. A shipping container according to claim 18 or 22, wherein said corrugated steel floor is disconnected at the position where the non metallic stuffing is filled, said non metallic stuffing is held within a concavity which is formed by two adjacent disconnected corrugated floors and has an opening at its bottom.
29. A shipping container according to claim 15 , wherein the wavelength of each corrugation of the steel floor is not equal to each other, and said non metallic stuffing is filled in the wider grooves.
30. A shipping container according to claim 15 , wherein the wavelength of each corrugation of the corrugated steel floor is equal to each other.
31. A shipping container according to any one of claims 1-3, wherein the thickness of said side panel is 0.8 0.2 mm.
32. A shipping container according to any one of claims 1-3, wherein the length I of said slope projection on said wave trough plane is 0≦I≦25 mm.
33. A shipping container according to any one of claims 3 or 31 or 32, wherein the wave height D between said wave crest and wave trough is 38 mm, the length I of said slope projection on said wave trough plane is 15 mm.
34. A shipping container according to any one of claims 3 or 31 or 32, wherein the wave height D between said wave crest and wave trough is 45 mm, the length I of said slope projection on said wave trough plane is 12 mm.
35. A shipping container according to any one of claims 1-3, wherein said bottom cross members, longitudinal members and support beams can be made of steel bars whose cross section can be L-shape, I-shape, T-shape, U-shape, C-shape or square shape.
36. A shipping container according to claim 1 or claim 35 or any one of claims 4-9, wherein said floor is made of steel plate.
37. A shipping container according to claim 36 , wherein the thickness of said floor is no thicker than 4 mm.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/939,173 US20050029256A1 (en) | 2001-10-10 | 2004-09-10 | Shipping container |
US11/999,326 US20080087666A1 (en) | 2001-10-10 | 2007-12-05 | Shipping container |
US11/999,327 US20080087667A1 (en) | 2001-10-10 | 2007-12-05 | Shipping container |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01127669.X | 2001-07-25 | ||
CN 01127670 CN1231400C (en) | 2001-07-25 | 2001-07-25 | Under carriage structure of container |
CN 01242851 CN2538726Y (en) | 2001-07-25 | 2001-07-25 | Longitudinal side wall structure for container |
CN01242851.5 | 2001-07-25 | ||
CN 01127669 CN1231399C (en) | 2001-07-25 | 2001-07-25 | Container |
CN01127670.3 | 2001-07-25 | ||
CN 01256204 CN2509126Y (en) | 2001-10-10 | 2001-10-10 | Bottom structure of container |
CN01256204.1 | 2001-10-10 | ||
CN 02227395 CN2565772Y (en) | 2002-04-29 | 2002-04-29 | Container floor |
CN02227395.6 | 2002-04-29 | ||
CN02227414.6 | 2002-04-30 | ||
CN 02227414 CN2557484Y (en) | 2002-04-30 | 2002-04-30 | Bottom frame structure for container |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/939,173 Division US20050029256A1 (en) | 2001-10-10 | 2004-09-10 | Shipping container |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030146212A1 true US20030146212A1 (en) | 2003-08-07 |
Family
ID=27543949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/200,786 Abandoned US20030146212A1 (en) | 2001-07-25 | 2002-07-22 | Shipping container |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030146212A1 (en) |
DE (1) | DE10233431B4 (en) |
GB (1) | GB2377924B (en) |
Cited By (11)
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US20080277392A1 (en) * | 2007-05-08 | 2008-11-13 | Sorensen Troy A | Cargo container |
WO2010059260A1 (en) * | 2008-11-24 | 2010-05-27 | Institute Of International Container Lessors | Container flooring system |
US7740149B2 (en) | 2002-09-27 | 2010-06-22 | Ropak Corporation | Container sidewall strengthening apparatus and methods |
US20110132347A1 (en) * | 2007-07-25 | 2011-06-09 | Kyoung Hwan Kim | Portable charcoal grill |
US20150059257A1 (en) * | 2012-08-16 | 2015-03-05 | Beaverfit Limited | Functional training rig kit |
US9308409B2 (en) | 2012-07-19 | 2016-04-12 | Beaverfit Limited | Functional training rig kit |
USD766382S1 (en) | 2015-02-06 | 2016-09-13 | Beaverfit Limited | Box |
USD768791S1 (en) | 2014-11-20 | 2016-10-11 | Beaverfit Limited | Support arm for box |
US20180057251A1 (en) * | 2016-08-26 | 2018-03-01 | Nantong Cimc-Special Transportation Equipment Manufacture Co., Ltd. | Container |
US10625111B2 (en) | 2016-01-26 | 2020-04-21 | Beaverfit Limited | Training apparatus |
US11192733B2 (en) * | 2017-10-20 | 2021-12-07 | YGCC Holdings Pty Ltd | Apparatus for use in unpacking shipping containers |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102008058233A1 (en) | 2008-07-10 | 2010-07-29 | Absolut Komposit Gmbh & Co. Kg | Arrangement for a floor system of a transport container, support element for such an arrangement, transport container and composite panel |
DK178486B1 (en) * | 2013-11-18 | 2016-04-11 | Maersk Container Ind As | Corrugated steel floor in a shipping container |
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Publication number | Priority date | Publication date | Assignee | Title |
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US7740149B2 (en) | 2002-09-27 | 2010-06-22 | Ropak Corporation | Container sidewall strengthening apparatus and methods |
US20080277392A1 (en) * | 2007-05-08 | 2008-11-13 | Sorensen Troy A | Cargo container |
US20110132347A1 (en) * | 2007-07-25 | 2011-06-09 | Kyoung Hwan Kim | Portable charcoal grill |
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US8070004B2 (en) | 2008-11-24 | 2011-12-06 | Institute Of International Container Lessors | Container flooring system |
US9675831B2 (en) | 2012-07-19 | 2017-06-13 | Beaverfit Limited | Functional training rig kit |
US10071275B2 (en) | 2012-07-19 | 2018-09-11 | Beaverfit Limited | Functional training rig kit |
US9308409B2 (en) | 2012-07-19 | 2016-04-12 | Beaverfit Limited | Functional training rig kit |
US9700761B2 (en) | 2012-08-16 | 2017-07-11 | Beaverfit Limited | Functional training rig kit |
US9308410B2 (en) * | 2012-08-16 | 2016-04-12 | Beaverfit Limited | Functional training rig kit |
US20170296876A1 (en) * | 2012-08-16 | 2017-10-19 | Beaverfit Limited | Functional training rig kit |
US20150059257A1 (en) * | 2012-08-16 | 2015-03-05 | Beaverfit Limited | Functional training rig kit |
US10398937B2 (en) * | 2012-08-16 | 2019-09-03 | Beaverfit Limited | Functional training rig kit |
US10525306B2 (en) * | 2012-08-16 | 2020-01-07 | Beaverfit Limited | Functional training rig kit |
US11701549B2 (en) | 2012-08-16 | 2023-07-18 | Beaverfit Limited | Functional training rig kit |
US10967224B2 (en) | 2012-08-16 | 2021-04-06 | Beaverfit Limited | Functional training rig kit |
USD768791S1 (en) | 2014-11-20 | 2016-10-11 | Beaverfit Limited | Support arm for box |
USD766382S1 (en) | 2015-02-06 | 2016-09-13 | Beaverfit Limited | Box |
US11559719B2 (en) | 2016-01-26 | 2023-01-24 | Beaverfit Limited | Training apparatus |
US10625111B2 (en) | 2016-01-26 | 2020-04-21 | Beaverfit Limited | Training apparatus |
US10918902B2 (en) | 2016-01-26 | 2021-02-16 | Beaverfit Limited | Training apparatus |
US20180057251A1 (en) * | 2016-08-26 | 2018-03-01 | Nantong Cimc-Special Transportation Equipment Manufacture Co., Ltd. | Container |
US10850918B2 (en) * | 2016-08-26 | 2020-12-01 | Nantong Cimc-Special Transportation Equipment Manufacture Co., Ltd | Container |
US11192733B2 (en) * | 2017-10-20 | 2021-12-07 | YGCC Holdings Pty Ltd | Apparatus for use in unpacking shipping containers |
US11618641B2 (en) | 2017-10-20 | 2023-04-04 | YGCC Holdings Pty Ltd | Apparatus for use in unpacking shipping containers |
Also Published As
Publication number | Publication date |
---|---|
DE10233431A1 (en) | 2003-02-13 |
GB2377924A (en) | 2003-01-29 |
GB0216731D0 (en) | 2002-08-28 |
GB2377924B (en) | 2005-03-02 |
DE10233431B4 (en) | 2017-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CHINA INTERNATIONAL MARINE CONTAINERS (GROUP) CO., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAI, BO-LIANG;WANG, SHI-SHENG;HE, SI-DONG;AND OTHERS;REEL/FRAME:013145/0398 Effective date: 20020715 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |