WO1994009229A1

WO1994009229A1 - A method in arrangement for holding objects and an arrangement for carrying out the method

Info

Publication number: WO1994009229A1
Application number: PCT/SE1992/000717
Authority: WO
Inventors: Jack Uhlmann
Original assignee: Jack Uhlmann
Priority date: 1992-10-12
Filing date: 1992-10-12
Publication date: 1994-04-28
Also published as: AU2905192A

Abstract

In a method in an arrangement for holding or hold together objects, for example a mould (10) or mould parts (11), whereby the arrangement (1) comprises a bolt (2) and at least a nut (5) shaped in two parts (6, 7) or as two bodies, the nut (5) can take a first position or transportation position, whereby the nut (5) can be slidded in an axial direction on the bolt (2), and a second position or working position, whereby one part (6, 7) or body of the nut (5) is rotated on the bolt (2) in the course of movement in the direction towards the other part (7, 6) or body and in that respect brought into engagement with cams (3), threads or similar shown by the bolt (2). The cams (3) or similar of the bolt (2), as well as threads shown by the nut (5), the said parts (6, 7) or bodies are lacking in portions in the axial direction of the arrangement (1) or the bolt (2) and the nut (5). When the nut (5) is rotated on the bolt (2) the thread of the one part of the nut (5) will be brought out of its engagement with the cams of the bolt (2), while the thread on the other part of the nut (5) at the same time will be brought into engagement with the cams of the bolt (2), and so on.

Description

A METHOD IN ARRANGEMENT FOR HOLDING OBJECTS AND AN ARRANGEMENT FOR CARRYING OUT THE METHOD

The present invention relates to a method in an arrangement to hold or hold together objects, for example a mould or mould parts, whereby the arrangement comprises a bolt and at least a nut which is arranged to be able to be brought into engagement with the bolt.

There is a need of an improved method in holding devices to hold or hold together objects. Within, for example, building and construction industries there is a need of a new bolt for moulds, which bolt can facilitate the work, reduce the risk of difficulties in use because of the dirty surroundings and permits a faster assemblage or arranging and a simplified dismounting.

Known methods with holding devices, which are shaped for co-operation by means of engagement by threads, are time consuming to use, as, for example, a nut will be screwed, for example, along a spindle a certain distance until the nut reaches a working position. To screw the nut along the said distance, which can be considered as only a distance of transportation, is time consuming, especially if multiplicity of holding devices will be used. Further, it appears often difficulties in assemb- lage because of the presence of the threads, especially when using the holding devices in surroundings where it exists risk of making the threads dirty. Dismounting is equally time consuming as the assemblage by the screw motion and can when used in surroundings where the risk exists for making the threads dirty or demolished be considerably time consuming. In, for example, moulding bolts it is used a nut with a screw thread which takes up time to arrange or assemble. Further, both the bolt and nut are sensitive to that surroundings, in which moulding bolts are used, for example by the risk of making the threads dirty. The use of the known moulding bolts cause often irritation in and during mount- ing, as well as in dismounting.

A method in accordance with the present invention fulfils, however, the requirements made, while at the same time the disadvantages of known methods when using the known holding devices of the kind in question are eliminated. Thus, a moulding bolt can, for example, be arranged and also be dismounted in an easier and considerably quicker way than before and where the risk for difficulties in mounting and dismounting is elimi¬ nated or in any case to a considerably extent reduced. A method in accor¬ dance with the invention is characterized in that the nut is shaped in at least two parts which, in a first position or transportation position, are arranged in a first relative position, whereby after transportation of the nut to a second position or working position the one or both parts are turned and take a second relative position while the parts are brought towards or off each other in an axial direction of the arrangement or the parts.

This invention also relates to an arrangement for carrying out the invent¬ ion. The arrangement is meant to hold or hold together objects and com¬ prises a bolt or similarshowing cams, threads or similar and at least a nut or similar. The nut is arranged to be able to be transferred along the bolt or its end portion or end portions to strike against the object or another basis which is meant to bear on the object. The arrangement is characterized in that the nut is shaped in two or more parts, of which two form co-operating bodies each showing an axial through hole or similar with a thread or similar arranged to be able to co-operate with the cams shown by the bolt. The bodies are arranged to be able to a relative turn¬ ing between a first position and a second position and move towards and off each other in an axial direction of the arrangement or the bodies.

In an embodiment of the arrangement in accordance with the invention the hole in the nut or bodies is shaped with a dimension in at least one direction across the hole or in a diametrical direction of the hole which is equal to or exceed the dimension or cross-section in one direction of the bolt which dimension or cross-section is equavalent to the greatest diameter of the bolt.

According to another embodiment of the arrangement in accordance with the invention the thread in the nut or bodies is shaped as a screw thread but runs only around a part or parts of the wall or periphery of the hole or that the thread is shaped with portions without threads extending in the axial direction of the nut or the bodies. In still an embodiment of the arrangement in accordance with the invention the bolt shows portions without cams, threads or similar extending in the axial direction of the bolt.

According to still another embodiment of the arrangement in accordance with the invention the arrangement shows guiding elements, preferably in form of guide curvings, which are arranged in each body and, for example, in form of a protrusion and a recess, whereby in the said second relative position between the bodies is the said protrusion in the one body arranged in the said recess in the other body, as well as the protrusion in the other body is arranged in the recess in the one or first mentioned body.

In an additional another embodiment of the arrangement in accordance with the invention the guiding elements comprise stops for at least an end position or preferably two end positions between which the bodies can turn in relation to each other between 80 - 100 , preferably 90 or approximately 90° or which set the said first and second relative posit- ions between the bodies.

According to still an additional embodiment of the arrangement in accord¬ ance with the invention existing guide curvings or protrusions and reces¬ ses extend from the exterior or periphery of the bodies to the said hole or from lower located places in the radial direction of the bodies to the said hole, whereby in the latter case the protrusions and recesses of both bodies can in applicable cases compose a connecting part, for example in form of a tap-shaped or tube-shaped means extending between the bodies in the said second relative position of the bodies and which connecting part can show engagement devices for a joining element, for example in form of a sleeve, which is arranged to join the two bodies to a nut or similar.

Such a nut is thus formed of two parts which are relative turnable while one part or body or both parts or bodies move towards each other or off each other, whereby the axial distance, which the parts or bodies can move towards or off each other, can substantially correspond to a cam pitch, a thread pitch or similar. Further characteristics of and advantages with the method and the arrangement in accordance with the invention will in the following description of the invention be apparent by embodiment examples, whereby a simultaneous reference will be made to the accompanying, schematic drawings, in which Fig. 1 shows from one side a part of an object with an arrangement in accordance with the invention and according to one embodiment, Fig. 2 shows in a side view a bolt, Fig. 3 shows in an end view the bolt in Fig. 2, Fig. 4 shows in a side view an embodiment of a nut, Fig. 5 shows in an end view a part of the nut or one body of the nut according to Fig. 4, Fig. 6 shows in a side view a second embodiment of a nut in a split position, i.e. in parts in form of two bodies and between the bodies in cross-section a joining element according to one embodiment, Fig. 7 shows in an end view a part of the nut or one body of the nut according to Fig. 6, Fig. 8 shows schematically in an end view an arrangement in accordance with the invention in a first position or trans¬ portation position, Fig. 9 shows schematically in cross-section an arrange¬ ment in accordance with the invention in a second position or working position and Fig. 10 shows in the same cross-section the arrangement in Fig. 9 during working, whereby the threads of the one body in the shown file of threads have been brought by rotatory movement into engagement with one file of cams of the bolt and the threads of the second body in the shown file of threads are just going to be brought out of their engage¬ ment with the second file of cams of the bolt due to the rotatory movement of the nut.

With reference designation 1 in the figures it is meant to show an arrange¬ ment in accordance with the invention. The arrangement 1 comprises a bolt 2, bar, screw, spindle, reinforcing iron or similar showing cams 3, ridges or similar which are shaped to form a thread with or without pitch, see Fig. 2 and 3. Along two diametrically located portions 4 extending along the bolt 2 in an axial direction cams 3 or similar or flanks of cams and threads are lacking. The portions 4 can be said to form splines. This should be able to be described in such a way that the bolt 2 has a thought division in four sectors and the surfaces of two sectors show cams 3 or similar located on the opposite side of the bolt and the surfaces of the rest of the sectors are without cams or similar. According to another embodiment the bolt 2 can show more such portions 4, for example four portions, without cams or similar, i.e. that a corresponding number of portions show cams or similar and which are regularly divided around the circumference of the bolt.

Further, the arrangement 1 comprises a nut 5 or similar comprising at least two parts, of which two form co-operating bodies 6 and 7, prefer- ably with identical shape, see Figs. 4 and 5. The bodies 6, 7 are arranged to be able to be joined to an unit by means of a joining element 22, whereby an example of such a joining element 22 is shown in Fig. 6 in connection with another embodiment of the nut 5 or the bodies 6, 7 than what has been shown in Figs. 4 and 5, see also Fig. 7. The nut 5 or bodies 6, 7 show a hole 8, aperture or similar extending axially through the nut or bodies and showing threads 9, cams or similar, which are arranged and shaped to be able to co-operate with the cams 3 or similar of the bolt 2. The nut 5 or bodies 6, 7 are thus meant to be able to be brought into engagement with the bolt 2. Further, the nut 5 or bodies 6, 7 can show gripping devices 25 in form of, for example, from the nut or the bodies protruding handles which can be provided with through holes for the possibility of locking the nut or the bodies by means of, for example, a pin when taken a position.

The threads 9 or similar are shaped as a screw thread but runs only around a part or parts of the wall or periphery of the hole 8 or that the thread 9 is shaped with portions 14 without threads extending in the axial direction of the nut 5 or the bodies 6, 7, i.e. the nut or bodies m have similar shape as the bolt 2 regarding its cams 3 or similar. This m should also in this case be able to be described in such a way that the nut 5 and the bodies 6, 7 have a thought division in four sectors accor¬ ding to one embodiment and that the hole 8 shows threads 9 or similar along two diametrically located portions and the rest of the sectors are without threads in the hole. According to the said second embodiment of the bolt 2 more such portions 14, for example four portions, which are without threads or similar can exist and be regularly divided in the hole 8 of the nut 5 or the bodies 6, 7.

The hole 8 in the nut 5 or bodies 6, 7 has according to the first embodi- ment regarding the number of portions 14 lacking threads, i.e. two port¬ ions, and is shaped with a dimension in at least one direction across the hole or in a diametrical direction of the hole which is equal to or exceed or preferably exceed some, for example with normal fit, the dimension or cross-section in one direction of the bolt 2 which dimension is equava- lent to the greatest diameter of the bolt, i.e. dimension or cross-sect¬ ion of the bolt 2 including its cams 3, see for example Fig. 8.

The nut 5 or the bodies 6, 7 can take a first position or transportation position, whereby the bodies 6, 7 are arranged in a first relative posi¬ tion where the threads 9 of the bodies and said portions 14 without threads are in register with one another, i.e. that the hole 8 in the nut 5 can be said to show axially extending splines. At this the nut 5 or the two bodies 6, 7 can be arranged to the bolt 2 and in that respect in such a way that the threads 9 of the nut or bodies are situated in the said portions 4 of the bolt 2 which are without cams 3, whereby the nut 5 or the bodies 6, 7 can be slidden along the bolt 2 for transportation to that place along the bolt where the nut or bodies are going to carry out a work which in most cases probably mean a connection with, to strike or to bear on an object or another basis. In that second position or a work¬ ing position taken the bodies 6, 7 are arranged to be able to take a second relative position, see Fig. 9, whereby the threads 9 of the nut 5 o ' or the bodies 6, 7 together extend 360 in the riole 8. At this the threads 9 of the one body 6 or 7 change and the threads 9 of the other body 7 or 6 are in engagement with the cams 3 of the bolt 2. At least one body 6, 7 is always in engagement with its threads with the cams 3 of the bolt 2. The first relative position is evident from Fig. 8, whereby no thread 9 of the body 6, 7 is in engagement with the cams 3 of the bolt 2.

The bodies 6, 7 are arranged to be able to be turned relative each other or that the one body 6 or 7 is turned in relation to the other body 7 or 6 and in that respect between preferably a first position and a second position. In the first relative position between the bodies 6, 7 the bodies are arranged at a distance from each other, for example corres¬ ponding or substantially corresponding to a cam pitch, a thread pitch or similar. The bodies 6, 7 are moved towards or off each other in.the axial direction during the relative turning of the bodies. The rotatory motion is done radially.

From the said first relative position between the bodies 6, 7 to the said second relative position between the bodies or vice versa the parts are brought to a relative angle of torsion between 80 - 100 , preferably 90 or approximately 90 .

The first relative position between the bodies 6, 7 is taken when the nut 5 or the bodies 6, 7 arranged on the bolt 2 are going to be moved in the direction towards or off the object, basis or similar, i.e. to or from the said second position or working position, i.e. during the said first position or transportation position, while the second relative position between the bodies is taken when the nut 5 or bodies 6, 7 have reached the said second position or working position.

The arrangement 1 shows guiding elements 15, preferably in form of guide curvings, which are arranged in each body 6, 7. The guiding elements 15 can according to one embodiment be formed of a protrusion 16 and a recess 17, whereby the protrusion 16 in the one body 6 or 7 can be received by the recess 17 in the other body 7 or 6 or vice versa. The protrusions 16 are situated out of the recesses 17 in said first relative position of the bodies 6, 7 and received by the recesses 17 in the said second rela¬ tive position. The protrusions 16 and the recesses 17 can extend from the exterior or surface of the bodies 6, 7 and to the hole 8, see the embodi¬ ment in Fig. 4, or from lower located places in the radial direction of the bodies 6, 7 and tothe hole 8. In the latter case the protrusions 16 and the recesses 17 of both bodies 6, 7 can compose or form a connecting part 20, for example in form of a tap-shaped or tube-shaped means extend- ing between the bodies 6, 7 in the said second relative position of the bodies 6, 7. The connecting part 20 can show engagement devices 21, for example in form of cavities, recesses or similar shaped in the surface or similar, which cavities show a certain width, i.a. to make it possible for the relative displacement of the bodies 6, 7 in the axial direction of the arrangement 1 or bodies. A joining element 22 can for example be formed of a sleeve to join or connect the two bodies 6, 7 to an unit, a nut 5 or similar. As a locking element 23 can in the connecting part 20 or on the inside of the sleeve exist spring rings 24, one for each body 6, 7, whereby a snap locking can be done.

The guiding elements 15 comprise stops, which are arranged at each end of the guide curving, which in turn is formed of a surface or cam surface. The stops are formed of an projecting flange 18, list, tap or similar on the protrusions 16 and a notch 19, track or similar in the recess 17, whereby the said flange 18 forms a locking hook and is received by the notch 19 in the second relative position of the bodies 6, 7 or in one position of the rotatory motion, while the flange 18 can be arranged to strike against a stop in the other end of the guide curving, i.e. in the first relative position of the bodies 6, 7.

In Fig. 1 is shown a part of an object, for example a mould 10 with mould parts 11 limiting a room 13, in which castings 13 will be brought or is brought to produce a moulded thing, such as for example a wall, a joist, etc. To hold the mould 10 together and to set the moulding room 13 it is in most cases used a multiplicity of moulding bolts, whereby the moulding bolt itself is arranged to extend through the moulding room 13 and is moulded into the castings 13 and extends also through the walls 11 of the mould 10 or the mould parts 11. To hold the mould or the mould parts together it is on its exterior arranged tightening devices or nuts for moulding bolts or in the arrangement 1 in accordance with the invent¬ ion a nut 5 comprising two bodies 6 and 7 which are arranged to co-operate with each other and with the moulding bolt 2.

In a method to hold or to hold together objects, for example a mould 10 or mould parts 11, the nut 5 can take a first position or transportation position, whereby the nut 5 can be slidden in an axial direction along the bolt 2, and a second position or working position, whereby the one body 6, 7 of the nut 5 is turned round the bolt 2 during displacement towards the other body 7, 6 and is brought in that respect into engage¬ ment with cams 3, threads or similar shown by the bolt 2. When the nut 5 is turned round the bolt 2 the thread 9 in the one body 6 or 7 of the nut 5 will be brought out of its engagement with the cams 3 of the bolt 2, while the thread 9. in the other body 7 or 6 of the nut 5 at the same time will be brought into engagement with the cams 3 of the bolt 2, and so on, see Fig. 10.

Without exceeding the scope of the concept of the invention, modifications of the method and the arrangement should be possible. Thus, another possi¬ bility of rotatory between the bodies can exist. Another shaping of the elements for the connection of the bodies than a sleeve can also exist. The said division in sectors of the bolt and nut or bodies can be other- wise than what has been mentioned in the embodiment examples. The method and the arrangement are thus not restricted to what has been described and shown in connection with the embodiment examples but soley by the following claims.

Claims

Claims :

1. A method in an arrangement to hold or hold together objects, for example a mould (10) or mould parts (11), whereby the arrangement (1) comprises a bolt (2) and at least a nut (5) which is arranged to be able to be brought into engagement with the bolt (2), characterized in that the nut (5) is shaped in at least two parts (6, 7) which, in a first position or transportation position, are arranged in a first relative position, whereby after transportation of the nut (5) to a second position or working position the parts (6, 7) are brought to a relative axial dis- placement in the direction towards each other by the fact that the parts or preferably one part is turned round the bolt (2), whereby the parts (6, 7) take a second relative position.

2. A method in accordance with claim 1, characterized in that from the said first relative position between the parts (6, 7) to the said second relative position or vice versa the parts are brought to a relative angle of torsion between 80 - 100 , preferably 90 or approximately 90° or preferably that the one part (6 or 7) is brought to such a said angle of torsion in relation to the second part.

3. A method in accordance with claim 1 or 2, characterized in that the parts (6, 7) are brought to take the said second relative position after that the nut (5) or the one part (6 or 7) strike against the object or another basis, for example a mould (10), mould part (11), bolt plate (12), a holding device, resistance or similar.

4. A method in accordance with claim 1, 2 or 3, characterized in that the parts (6 or 7) are brought to take the said first relative position when the nut (5) or the parts (6, 7) on the bolt (2) are going to be moved in the direction towards the object or when the nut (5) or the parts (6, 7) are going to be removed from a holding or holding together position for the object.

5. An arrangement to hold or hold together objects in a method in accord- ance with any of the claims 1 - 4, whereby the arrangement (1) comprises a bolt (2), bar, screw, spindle, reinforcing iron or similar showing cams (3), threads or similar and at least a nut (5) or similar which is arranged to be able to be transferred along the bolt (2) or its end portions to strike against the object or another basis, for example a mould (10), mould part (11) or similar or a bolt plate (12), a holding device, resistance or similar, which is meant to bear on the object, the mould or mould part, characterized in that the nut (5) is shaped in two or more parts, of which two form co-operating bodies (6, 7) each show¬ ing an axial through hole (8), aperture or similar with a thread (9), cams or similar arranged to be able to co-operate with the cams (3) shown by the bolt (2) and in that the bodies (6, 7) are arranged to be able to a relative turning between a first position and a second position and move towards and off each other in an axial direction.

6. An arrangement in accordance with claim 5, characterized in that the hole (8) in the nut (5) or bodies (6, 7) is shaped with a dimension in at least one direction across the hole (8) or in a diametrical direction of the hole which is equal to or exceed the dimension or cross-section in one direction of the bolt (2) which dimension or cross-section is equava- lent to the greatest diameter of the bolt.

7. An arrangement in accordance with claim 5 or 6, characterized in that the thread (9) in the nut (5) or bodies (6, 7) is shaped as a screw thread but runs only around a part or parts of the wall or periphery of the hole (8) or that the thread (9) is shaped with portions (14) without threads extending in the axial direction of the nut (5) or the bodies (6, 7).

8. An arrangement in accordance with claim 5, 6 or 7, characterized in that the bolt (2) shows portions (4) without cams (3), threads or similar extending in the axial direction of the bolt.

9. An arrangement in accordance with claim 5, characterized in that the arrangement (1) shows guiding elements (15), preferably in form of guide curvings, which are arranged in each body (6, 7) and, for example, in form of a protrusion (16) and a recess (17), whereby in the said second relative position between the bodies (6, 7) is the said protrusion (16) in the one body (.6 or 7) arranged in the said recess (17) in the other body (7 or 6), as well as the protrusion (16) in the other body (7 or 6) is arranged in the recess (17) in the one or first mentioned body (6 or 7).

10. An arrangement in accordance with claim 9, characterized in that the guiding elements (15) comprise stops (18) for at least an end position or preferably two end positions between which the bodies (6, 7) can turn in relation to each other between 80 - 100 , preferably 90 or approxi- mately 90 or which set the said first and second relative positions between the bodies (6, 7) and in that existing guide curvings or protru¬ sions (16) and recesses (17) extend from the exterior or periphery of the bodies (6, 7) to the said hole (8) or from lower located places in the radial direction of the bodies (6, 7) to the said hole (8), whereby in the latter case the protrusions (16) and recesses (17) of both bodies (6, 7) can in applicable cases compose a connecting part (20), for example in form of a tap-shaped or tube-shaped means extending between the bodies (6, 7) in the said second relative position of the bodies and which connecting part can show engagement devices for a joining element (22), for example in form of a sleeve, which is arranged to join the two bodies (6, 7) to a nut (5) or similar and which by that is shaped of two parts which are relative turnable while one part or body (6, 7) or both parts or bodies move towards or off each other, whereby the axial dist¬ ance, which the parts or bodies can move towards or off each other, can substantially correspond to a cam pitch, a thread pitch or similar.