CN103527848A - Drawing head for dragging construction of ultra-large-diameter poly ethylene (PE) pipe - Google Patents
Drawing head for dragging construction of ultra-large-diameter poly ethylene (PE) pipe Download PDFInfo
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- CN103527848A CN103527848A CN201310535881.2A CN201310535881A CN103527848A CN 103527848 A CN103527848 A CN 103527848A CN 201310535881 A CN201310535881 A CN 201310535881A CN 103527848 A CN103527848 A CN 103527848A
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- traction
- cylindrical shell
- pipe
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- pipe body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
Abstract
The invention belongs to the technical field of non-excavation construction devices and particularly relates to a drawing head for dragging construction of an ultra-large-diameter poly ethylene (PE) pipe. The problem that an existing drawing head is poor in connecting firmness and the like is solved. The drawing head comprises a barrel-shaped traction cylinder capable of being inserted at the end of a PE pipe body, wherein the outer wall of the traction cylinder abuts against the inner wall of the PE pipe body, a fixing mechanism for enabling the traction cylinder and the PE pipe body to be connected fixedly is arranged on the traction cylinder, a traction end cover capable of closing the end of the PE pipe body is fixed at the end of the traction cylinder, and a traction ring is arranged at the end of the traction end cover. Compared with the prior art, the drawing head for the dragging construction of the ultra-large-diameter PE pipe has the advantages that the drawing head is simple in structure, high in strength and firm in connection, does not easily break away from the pipe body during traction and can bear large traction force, the pipe body is even in stress, does not easily break and is not easily scratched, the plugging effect is good, the inside of the pipe body is not easily polluted, and installation is convenient.
Description
Technical field
The invention belongs to non-excavating construction equipment technical field, especially relate to a kind of ultra-large caliber PE pipe hauling construction drawing head.
Background technique
No-excavation construction method is to introduce China the late nineteen eighties, during the no-dig directional driller of introducing at that time, for some calibers smaller Φ 80, Φ 110, Φ 160, draws pipe.After being introduced into China, no-excavation construction method is adopted by the every profession and trade of China, for example, and telecommunications industry, water supply industry, power industry, draining, blowdown industry etc.Along with the continuity of reform and opening-up, the basic facilities that the Urbanization Construction of China is constantly accelerated urbanization put in place and are perfect, and it is more and more difficult laying a pipe network at Urban Underground, and only having non-excavating construction is unique selection.Along with urban population density is increasing, the non-excavation laying of super large caliber pipeline is more and more, and this just requires very high to the drawing head for tractive body.The many employings of existing drawing head a kind of " tapered cap ", use on " tapered cap " tubing and beat several holes, are fixed on " tapered cap " upper with snap bolt, with regard to hauling construction.Some simply makes a call to four holes on PE pipe, directly with wire rope, puts on just to buckle well and draws, and " tapered cap " also need not.After dilatory like this, in pipeline, clean to such an extent that spend a lot of water to rinse well, cause water resource waste, increased the cost of pipe laying, in addition existing drawing head also exists: structural strength is low, easy slippage when dilatory, body easy-rupturing when dilatory, the problems such as body easily scratches, and body encapsulation is poor, body discontinuity.
The problem existing in order to solve prior art, people have carried out long-term exploration, have proposed solution miscellaneous.For example, Chinese patent literature discloses a kind of traction tube [application number: 201020685354.1], comprise outer tube, blocking sheet, steel reinforced pipe and punching bolt, the external diameter of its middle external tube is identical with trailed MPP pipeline with wall thickness, the diameter of blocking sheet is identical with the internal diameter of outer tube respectively with the external diameter of reinforced pipe, blocking sheet is fixed together in the inner chamber of outer tube and with outer tube, reinforced pipe is inserted the outer end of blocking sheet, the external port of outer tube and reinforced pipe is neat and be respectively equipped with radial direction through hole apart from external port 1/3rd places and 2/3rds places mutually, the axis of 2 radial direction through hole is mutually orthogonal, punching bolt is 2, penetrate respectively 2 radial direction through hole, the two ends of each punching bolt are stretched out respectively the outer wall of outer tube and are used respectively fastening nuts.
Such scheme has solved the poor problem of existing traction tube plugging effect to a certain extent, but this scheme still exists: structural strength is low, connects firm not, easy slippage when dilatory, body easy-rupturing when dilatory, body easily scratches, body plugging effect is poor, the problem of body discontinuity.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of simple and reasonable, be connected firmly, the ultra-large caliber PE pipe hauling construction drawing head that plugging effect is good.
For achieving the above object, the present invention has adopted following technical proposal: this ultra-large caliber PE pipe hauling construction drawing head, it is characterized in that, this drawing head comprises can be plugged in PE pipe body end and tubular traction cylindrical shell, the outer wall of described traction cylindrical shell and described PE pipe inboard wall of tube body lean, on traction cylindrical shell, be provided with for traction cylindrical shell and PE are managed to the fixed mechanism that body is connected, described pull cylinder end of body is fixed with can be by the traction end cap of described PE pipe body end-enclosed, and described traction end cap end is provided with draw ring.Adopt this structure the fixation of PE body to be difficult for during traction departing from, PE pipe body is difficult for producing fracture, and the pipe of the PE after traction body inside is without cleaning simultaneously.
At above-mentioned ultra-large caliber PE pipe hauling construction, with in drawing head, described fixed mechanism comprises some fixed blocks that can radially be located on traction cylindrical shell and PE pipe body, and each fixed block is in a discrete distribution along helix.Obviously, each fixed block is helix and distribute arranges, make fixed block radially be not axially all positioned on straight line, while guaranteeing traction, pulling force disperses, PE pipe body easy-rupturing not during traction.
At above-mentioned ultra-large caliber PE pipe hauling construction, with in drawing head, the projection of each fixed block on traction cylindrical shell cross section is all positioned on same circumference and is uniformly distributed in a circumferential direction.When this structure makes to draw, PE pipe body is stressed evenly, draws more laborsaving.
At above-mentioned ultra-large caliber PE pipe hauling construction, use in drawing head, described fixed block comprises the cylindrical pin with external thread being radially located on traction cylindrical shell and PE pipe body, at the intrinsic welded nut that is welded on traction cylinder inboard wall of end cover of cylindrical pin with external thread, the tightening nut that is also connected in the end of cylindrical pin with external thread and is set up in parallel with welded nut.In this structure, welded nut makes cylindrical pin with external thread easier for installation, and tightening nut makes the fixation of cylindrical pin with external thread, the resistance when while draws in order to reduce, and the outer end of cylindrical pin with external thread flushes with the outer wall of PE pipe body.
At above-mentioned ultra-large caliber PE pipe hauling construction, with in drawing head, the thread section length of described cylindrical pin with external thread is 2-3 times of welded nut thickness; The quantity of described fixed block is 4-16.In this structure, the length of thread section has guaranteed the normal mounting of tightening nut, and as a kind of preferred version, the quantity of the fixed block is here 8.
At above-mentioned ultra-large caliber PE pipe hauling construction, with in drawing head, described traction end cap comprises and is fixed on pull cylinder end of body and tapered end cap skeleton, and described end cap skeleton is provided with and is conical shrouding.Guaranteed in distraction procedure, the mud of grouting can not enter in PE pipe body, has avoided pollution PE pipe body inner, does not need to rinse with a large amount of water yet.
At above-mentioned ultra-large caliber PE pipe hauling construction, use in drawing head, described end cap skeleton comprises some at the equally distributed body of rod of circumferencial direction, the described body of rod comprises the first joint being connected with the inwall of described traction cylindrical shell by welding manner, the first described joint is connected with the rake being obliquely installed, the end of each rake comes together in the medial axis elongation line of traction cylindrical shell and forms the second joint in rake end, and each second joint is parallel to traction cylindrical shell medial axis and arranges and be all connected with draw ring.This structure makes the structural strength of end cap skeleton higher, and during for fear of traction, draw ring and the second joint depart from, and the draw ring is here connected with the second joint by welding manner.
At above-mentioned ultra-large caliber PE pipe hauling construction, with in drawing head, described shrouding is provided with protection cylindrical shell away from one end of draw ring, and described protection cylindrical shell one end is connected with described shrouding, and the other end is fitted on PE pipe body.To protect cylindrical shell in order guaranteeing to draw indeformable, in protection cylindrical shell, to be also provided with supporting structure, during installation, traction cylindrical shell part is plugged in PE pipe body, protection cylinder body is positioned at traction cylindrical shell and is not plugged on the periphery that PE manages the part of body.
At above-mentioned ultra-large caliber PE pipe hauling construction, use in drawing head, described protection cylindrical shell comprises tubular straight part, the equal diameters of the diameter of described straight part and PE pipe body, described straight part upper end is provided with arc choke, and described arc choke is connected with described shrouding by welding manner.As preferably, the straight part here dock with PE pipe body, thus normally carrying out of guaranteeing to draw, make straight part can protect PE pipe body, avoid its surface tear, arc choke can play the effect of full circle to the good hole of Directional Drilling, reduces the mill resistance coefficient of hole wall and PE pipe body simultaneously; Straight part also can extend on PE pipe body outer side wall.
At above-mentioned ultra-large caliber PE pipe hauling construction, use in drawing head, in described traction cylindrical shell, be also provided with some struts that distribute along the different diameter of traction cylindrical shell respectively, the two ends distribution of each strut is connected with the inwall of traction cylindrical shell and each strut is uniformly distributed in a circumferential direction; The end of the first described joint contacts with strut.This structure has improved the structural strength of traction cylindrical shell, prevents from producing distortion in distraction procedure.
Compared with prior art, this ultra-large caliber PE pipe hauling construction is by the advantage of drawing head: simple in structure, intensity is high, is connected firmly, during traction, be difficult for departing from body, can bear compared with large traction, body is stressed evenly, is difficult for producing fracture, body is difficult for by scratch, plugging effect is good, is difficult for contaminated, easy for installation in body.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention.
Fig. 2 is sectional view provided by the invention.
In figure, PE pipe body 1, traction cylindrical shell 2, traction end cap 3, shrouding 31, the body of rod 32, the first joint 321, rake 322, the second joint 323, draw ring 4, fixed block 5, cylindrical pin with external thread 51, welded nut 52, tightening nut 53, protection cylindrical shell 6, straight part 61, arc choke 62, strut 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1-2, this ultra-large caliber PE pipe hauling construction drawing head, comprise and can be plugged in PE pipe body 1 end and tubular traction cylindrical shell 2, the outer wall of traction cylindrical shell 2 and PE pipe body 1 inwall lean, on traction cylindrical shell 2, be provided with for traction cylindrical shell 2 and PE are managed to the fixed mechanism that body 1 is connected, traction cylindrical shell 2 ends are fixed with can be by the traction end cap 3 of PE body 1 end-enclosed, and traction end cap 3 ends are provided with draw ring 4.Adopt this structure 1 fixation of PE body to be difficult for during traction departing from, PE pipe body 1 is difficult for producing fracture, and the pipe of the PE after traction body 1 inside is without cleaning simultaneously.
As a kind of preferred version, fixed mechanism in the present embodiment comprises some fixed blocks 5 that can radially be located on traction cylindrical shell 2 and PE pipe body 1, each fixed block 5 is in a discrete distribution along helix, make fixed block 5 radially with axially all not be positioned on straight line, while guaranteeing traction, pulling force disperses, and during traction, PE manages not easy-rupturing of body 1.Further, the projection of each fixed block 5 on traction cylindrical shell 2 cross sections is all positioned on same circumference and is uniformly distributed in a circumferential direction.When this structure makes to draw, PE pipe body 1 is stressed evenly, draws more laborsaving.Fixed block 5 comprises the cylindrical pin with external thread 51 being radially located on traction cylindrical shell 2 and PE pipe body 1, at the intrinsic welded nut 52 that is welded on traction cylindrical shell 2 inwalls of the end of cylindrical pin with external thread 51 cover, the tightening nut 53 that is also connected in the end of cylindrical pin with external thread 51 and is set up in parallel with welded nut 52, in this structure, welded nut 52 has facilitated the installation of cylindrical pin with external thread 51, tightening nut 53 makes the fixation of cylindrical pin with external thread 51, the resistance when while draws in order to reduce, the outer end of cylindrical pin with external thread 51 flushes with the outer wall of PE pipe body 1.The thread section length of cylindrical pin with external thread 51 is 2-3 times of welded nut 52 thickness; The quantity of fixed block 5 is 4-16.In this structure, the length of thread section has guaranteed the normal mounting of tightening nut 53, and as a kind of preferred version, the quantity of the fixed block 5 is here 8.
During installation, first the part of traction cylindrical shell 2 is plugged in PE pipe body 1, in welded nut 52, get out the through hole that can run through PE pipe body 1 sidewall, then from PE pipe body 1 outer side wall, through hole is carried out to reaming, then cylindrical pin with external thread 51 is inserted in through hole, cylindrical pin with external thread 51 ends are connected with tightening nut 53 with welded nut 52 respectively, thereby realize traction cylindrical shell 2, manage being fixedly linked of body 1 with PE, draw ring 4 is connected with haulage gear, thereby realizes the traction that PE manages body.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the terms such as PE pipe body 1, traction cylindrical shell 2, traction end cap 3, shrouding 31, the body of rod 32, the first joint 321, rake 322, the second joint 323, draw ring 4, fixed block 5, cylindrical pin with external thread 51, welded nut 52, tightening nut 53, protection cylindrical shell 6, straight part 61, arc choke 62, strut 7 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (10)
1. a ultra-large caliber PE pipe hauling construction drawing head, it is characterized in that, this drawing head comprises can be plugged in PE pipe body (1) end and tubular traction cylindrical shell (2), the outer wall of described traction cylindrical shell (2) and described PE pipe body (1) inwall lean, on traction cylindrical shell (2), be provided with the fixed mechanism being connected for drawing cylindrical shell (2) and PE pipe body (1), described traction cylindrical shell (2) end is fixed with can be by the traction end cap (3) of described PE pipe body (1) end-enclosed, described traction end cap (3) end is provided with draw ring (4).
2. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 1, it is characterized in that, described fixed mechanism comprises some fixed blocks (5) that can radially be located on traction cylindrical shell (2) and PE pipe body (1), and each fixed block (5) is in a discrete distribution along helix.
3. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 2, it is characterized in that, the projection of each fixed block (5) on traction cylindrical shell (2) cross section is all positioned on same circumference and is uniformly distributed in a circumferential direction.
4. according to the ultra-large caliber PE pipe hauling construction drawing head described in claim 2 or 3, it is characterized in that, described fixed block (5) comprises the cylindrical pin with external thread (51) being radially located on traction cylindrical shell (2) and PE pipe body (1), at the intrinsic welded nut (52) that is welded on traction cylindrical shell (2) inwall of end cover of cylindrical pin with external thread (51), the tightening nut (53) that is also connected in the end of cylindrical pin with external thread (51) and is set up in parallel with welded nut (52).
5. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 4, it is characterized in that, the thread section length of described cylindrical pin with external thread (51) is 2-3 times of welded nut (52) thickness; The quantity of described fixed block (5) is 4-16.
6. according to the ultra-large caliber PE pipe hauling construction drawing head described in claim 1 or 2 or 3, it is characterized in that, described traction end cap (3) comprises and is fixed on traction cylindrical shell (2) end and tapered end cap skeleton, and described end cap skeleton is provided with and is conical shrouding (31).
7. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 6, it is characterized in that, described end cap skeleton comprises some at the equally distributed body of rod of circumferencial direction (32), the described body of rod (32) comprises the first joint (321) being connected with the inwall of described traction cylindrical shell (2) by welding manner, described the first joint (321) is connected with the rake (322) being obliquely installed, the end of each rake (322) comes together in the medial axis elongation line of traction cylindrical shell (2) and forms the second joint (323) in rake (322) end, each second joint (323) is parallel to traction cylindrical shell (2) medial axis and arranges and be all connected with draw ring (4).
8. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 7, it is characterized in that, described shrouding (31) is provided with protection cylindrical shell (6) away from one end of draw ring (4), described protection cylindrical shell (6) one end is connected with described shrouding (31), and the other end is fitted on PE pipe body (1).
9. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 8, it is characterized in that, described protection cylindrical shell (6) comprises tubular straight part (61), the equal diameters of the diameter of described straight part (61) and PE pipe body (1), described straight part (61) upper end is provided with arc choke (62), and described arc choke (62) is connected with described shrouding (31) by welding manner.
10. according to ultra-large caliber PE pipe hauling construction drawing head claimed in claim 7, it is characterized in that, in described traction cylindrical shell (2), be also provided with some struts (7) that distribute along the different diameter of traction cylindrical shell (2) respectively, the two ends distribution of each strut (7) is connected with the inwall of traction cylindrical shell (2) and each strut (7) is uniformly distributed in a circumferential direction; The end of described the first joint (321) contacts with strut (7).
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| CN201310535881.2A CN103527848B (en) | 2013-11-01 | 2013-11-01 | Ultra-large caliber PE pipe hauling construction drawing head |
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| CN201310535881.2A CN103527848B (en) | 2013-11-01 | 2013-11-01 | Ultra-large caliber PE pipe hauling construction drawing head |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10240709B2 (en) * | 2016-06-11 | 2019-03-26 | Corrpro Companies, Inc. | System and method for protecting one or more pipes against corrosion and corrosion-protected pipe |
| CN110260052A (en) * | 2019-06-17 | 2019-09-20 | 中国一冶集团有限公司 | One kind laying group's pipe device and its application method at the piping lane egress hatch of both sides of the road |
| CN110763298A (en) * | 2019-10-31 | 2020-02-07 | 广船国际有限公司 | Depth measuring tube |
| CN111720623A (en) * | 2020-07-07 | 2020-09-29 | 海南前途工程设计有限公司 | Non-excavation lead-in pipe construction method |
| CN112344090A (en) * | 2020-09-25 | 2021-02-09 | 中国化学工程第六建设有限公司 | Multilayer pipe gallery pipe penetrating mould and pipe penetrating construction method |
| CN114754196A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Special dragging head for submarine pipeline landing directional drill and submarine pipeline landing directional drill system |
| CN114754196B (en) * | 2021-01-08 | 2024-04-30 | 中国石油天然气集团有限公司 | Special drag head for sea pipe landing directional drill and sea pipe landing directional drill system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10240709B2 (en) * | 2016-06-11 | 2019-03-26 | Corrpro Companies, Inc. | System and method for protecting one or more pipes against corrosion and corrosion-protected pipe |
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| CN112344090A (en) * | 2020-09-25 | 2021-02-09 | 中国化学工程第六建设有限公司 | Multilayer pipe gallery pipe penetrating mould and pipe penetrating construction method |
| CN114754196A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Special dragging head for submarine pipeline landing directional drill and submarine pipeline landing directional drill system |
| CN114754196B (en) * | 2021-01-08 | 2024-04-30 | 中国石油天然气集团有限公司 | Special drag head for sea pipe landing directional drill and sea pipe landing directional drill system |
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| CN103527848B (en) | 2018-01-16 |
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Effective date of registration: 20141104 Address after: Bing Jia Wan Cun, Yuzhong County, Gansu province 730104 Jin Ya Zhen Lanzhou City Applicant after: Zhejiang Fuhao Pipe Industry Co., Ltd. Address before: 311817 Zhejiang city of Shaoxing province Zhuji City Ying Dian Jie Zhen Chong Zhu Cun Applicant before: Zhou Qiyan |
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