CN206973046U - A kind of back-dragging device for non-excavation underground pipeline construction - Google Patents
A kind of back-dragging device for non-excavation underground pipeline construction Download PDFInfo
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- CN206973046U CN206973046U CN201720606525.9U CN201720606525U CN206973046U CN 206973046 U CN206973046 U CN 206973046U CN 201720606525 U CN201720606525 U CN 201720606525U CN 206973046 U CN206973046 U CN 206973046U
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- claw
- pull bar
- sliding block
- sliding sleeve
- dragging device
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Abstract
The utility model discloses a kind of back-dragging device for non-excavation underground pipeline construction, it includes sliding sleeve, sliding block, pull bar and back-moving spring, endoporus is offered at the center of the sliding sleeve, the sliding block is arranged in the endoporus, one end of the sliding sleeve is provided with several can be to retraction at center and the claw of expansion, one end of the pull bar is connected to the claw on through the sliding block and sliding sleeve and by limiting component, the back-moving spring is sheathed on outside the pull bar between the sliding block and claw, and hangnail is provided with the side wall that the claw contacts with plastic lined piping.Above-mentioned back-dragging device can not only reuse, and save cost；And can be automatically adjusted according to pipeline hole tolerance, device is connected firmly with underground utilities, it is ensured that to return hauling pipe line and smoothly complete, convenient disassembly is safe and reliable.
Description
Technical field
The utility model belongs to underground pipeline construction technology, is used for what non-excavation underground pipeline was constructed more particularly, to a kind of
Back-dragging device.
Background technology
In the construction of no-dig technique pipe installation, carry out needing to use back-dragging device when pipeline time drags laying, traditional returns
It is to return to drag using progress pipeline the methods of stopper sealing and steel wire perforation to drag mode.Exist in specific application process and ask as follows
Topic：
1) under existing arrangement and method for construction, plastic lined piping the problem of this is inevitable there is caliber tolerance, therefore returning
Obtained before dragging and manually cut the suitable stopper of timber making, finally knocked in iron hammer, to reach sealing effectiveness.This scheme timber
Manual cutting is very time-consuming, and slightly mistake is just scrapped, and delays the plenty of time and wastes a large amount of timber.
2) when with fixation with steel wire stopper with plastic lined piping is pinioned, there is relatively time consuming of punching in perforation procedure, return and drag
When intensity of steel wire it is unreliable, return drag end after need to amputate a part of plastic lined piping.
Utility model content
The purpose of this utility model is to provide a kind of back-dragging device for non-excavation underground pipeline construction, and it has section
Province's expense, convenient disassembly and it is safe and reliable the characteristics of, with solve in the prior art be used for non-excavation underground pipeline construction return drag
Above mentioned problem existing for device.
To use following technical scheme up to this purpose, the utility model：
A kind of back-dragging device for non-excavation underground pipeline construction, it includes sliding sleeve, sliding block, pull bar and back-moving spring,
Endoporus is offered at the center of the sliding sleeve, the sliding block is arranged in the endoporus, and one end of the sliding sleeve is provided with some
It is individual to be connected to retraction at center and the claw of expansion, one end of the pull bar through the sliding block and sliding sleeve and by limiting component
It is connected on the claw, the back-moving spring is sheathed on outside the pull bar between the sliding block and claw, the claw and plastic tube
Hangnail is provided with the side wall of linear contact lay.
Especially, the limiting component includes being fixed on the inner baffle plate of the pull bar, coordinates the baffle plate in the card
Pawl inwall is extended internally limited location step, and the baffle plate is resisted against on the limited step.
Especially, the inner of the pull bar is connected with seal assembly, and the seal assembly includes the sealing being connected with pull bar
Mounting seat is enclosed, sealing ring is provided with the sealing ring mounting seat, coordinates the sealing ring to be set in the sealing ring mounting seat
It is equipped with convex shoulder.
Especially, the endoporus uses bellmouth, coordinates the bellmouth in being provided with conical section on the sliding block, described
Conical section is arranged in the bellmouth.
The beneficial effects of the utility model are, described compared with prior art to be dragged for returning for non-excavation underground pipeline construction
Device has advantages below：
1) back-dragging device may be reused, and save expense；
2) it can be automatically adjusted according to pipeline hole tolerance, device is connected firmly with underground utilities, it is ensured that return hauling pipe line
Smoothly complete；
3) install and dismantle simple and fast, safe operation is reliable.
Brief description of the drawings
Fig. 1 is the back-dragging device for being used for non-excavation underground pipeline construction that the utility model embodiment 1 provides
Structural representation.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
Refer to shown in Fig. 1, Fig. 1 is being applied for non-excavation underground pipeline for the offer of the utility model embodiment 1
The structural representation of the back-dragging device of work.
In the present embodiment, a kind of back-dragging device for non-excavation underground pipeline construction includes sliding sleeve 1, sliding block 2, pull bar 3
With back-moving spring 4, bellmouth 5 is offered at the center of the sliding sleeve 1, coordinates the bellmouth 5 to be provided with the sliding block 2
Conical section 6, the conical section 6 are arranged in the bellmouth 5, and the sliding block 2 and sliding sleeve 1 use wedge block structure, it is ensured that
Stable and reliable operation.
One end of the sliding sleeve 1 be provided with several can to retraction at center and the claw 7 of expansion, the one of the pull bar 3
End is connected on the claw 7 through the sliding block 2 and sliding sleeve 1 and by limiting component, and the back-moving spring 4 is sheathed on described
Outside pull bar 3 between sliding block 2 and claw 7, hangnail 9, the limit are provided with the side wall that the claw 7 contacts with plastic lined piping 8
Position part includes being fixed on the inner baffle plate 10 of the pull bar 3, and coordinating the baffle plate 10 to be extended internally in the inwall of claw 7 has
Limited step 11, the baffle plate 10 are resisted against on the limited step 11.
The inner of the pull bar 3 is connected with seal assembly, and the seal assembly includes the sealing ring installation being connected with pull bar 3
Seat 12, sealing ring 13 is provided with the sealing ring mounting seat 12, coordinates the sealing ring 13 in the sealing ring mounting seat 12
On be provided with convex shoulder 14.
When carrying out back dilatory pipe, the port position of plastic lined piping 8 for treating back to drag is secured the device to, pull bar 3 of pulling back,
In the presence of baffle plate 10, claw 7 is set whole device is integrally entered in plastic lined piping 8 to recovery at center；In back-moving spring 4
In the presence of tension force, claw 7 is resetted, contacted with the inwall of plastic lined piping 8；Sliding sleeve 1 is set to be connected with transfer head, drilling rod returns band when dragging
Dynamic sliding sleeve 1 marches forward direction movement, makes the radial dilatation of claw 7, cuts tube body wall chamber, pipeline is pulled back and portalled；After trombone slide terminates,
Transfer body is removed, beats sliding sleeve 1, makes device is overall to be moved to opposite direction, forces claw 7 to exit tube wall, pinching sliding sleeve 7 with hand moves back
Go out, hand-pulling pull bar 3 reclaims claw 7, finally takes out whole tube-pulling apparatus.
The above-mentioned back-dragging device for non-excavation underground pipeline construction adds pawl shape to realize using wedge block structure
The effect for the more drawing the more tight, enables device firmly to catch plastic lined piping, reliably completes back to be pulled through journey.In sealing, this hair
It is bright using special rubber sealing structure, play the effect that hydraulic pressure is more big more seals, prevent pipeline from intaking.
Above example simply elaborates general principle and characteristic of the present utility model, and the utility model is not by above-mentioned example
Limitation, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change and change, these changes
Change and change and both fall within claimed the scope of the utility model.The utility model requires protection scope will by appended right
Ask book and its equivalent thereof.
Claims (4)
1. it is a kind of for non-excavation underground pipeline construction back-dragging device, it is characterised in that it include sliding sleeve, sliding block, pull bar and
Back-moving spring, endoporus is offered at the center of the sliding sleeve, the sliding block is arranged in the endoporus, and one end of the sliding sleeve is set
Be equipped with several through the sliding block and sliding sleeve and can pass through limit to retraction at center and the claw of expansion, one end of the pull bar
Position part is connected on the claw, and the back-moving spring is sheathed on outside the pull bar between the sliding block and claw, the claw
Hangnail is provided with the side wall contacted with plastic lined piping.
2. the back-dragging device according to claim 1 for non-excavation underground pipeline construction, it is characterised in that described spacing
Part includes being fixed on the inner baffle plate of the pull bar, coordinates the baffle plate to be extended internally limited location platform in the claw inwall
Rank, the baffle plate are resisted against on the limited step.
3. the back-dragging device according to claim 1 for non-excavation underground pipeline construction, it is characterised in that the pull bar
The inner be connected with seal assembly, the seal assembly includes sealing ring mounting seat be connected with pull bar, and the sealing ring is installed
Sealing ring is provided with seat, coordinates the sealing ring in being provided with convex shoulder in the sealing ring mounting seat.
4. the back-dragging device according to claim 1 for non-excavation underground pipeline construction, it is characterised in that the endoporus
Using bellmouth, the bellmouth is coordinated to be arranged at the bellmouth in being provided with conical section, the conical section on the sliding block
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720606525.9U CN206973046U (en) | 2017-05-26 | 2017-05-26 | A kind of back-dragging device for non-excavation underground pipeline construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720606525.9U CN206973046U (en) | 2017-05-26 | 2017-05-26 | A kind of back-dragging device for non-excavation underground pipeline construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973046U true CN206973046U (en) | 2018-02-06 |
Family
ID=61409968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720606525.9U Active CN206973046U (en) | 2017-05-26 | 2017-05-26 | A kind of back-dragging device for non-excavation underground pipeline construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206973046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426095A (en) * | 2018-04-16 | 2018-08-21 | 益辟西（上海）工程管理有限公司 | A kind of underground utilities no-dig technique tube drawing process |
| CN113898785A (en) * | 2021-10-22 | 2022-01-07 | 安徽两淮建设有限责任公司 | Horizontal directional drilling pipeline back-dragging linear counterweight device and back-dragging construction method |
-
2017
- 2017-05-26 CN CN201720606525.9U patent/CN206973046U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426095A (en) * | 2018-04-16 | 2018-08-21 | 益辟西（上海）工程管理有限公司 | A kind of underground utilities no-dig technique tube drawing process |
| CN113898785A (en) * | 2021-10-22 | 2022-01-07 | 安徽两淮建设有限责任公司 | Horizontal directional drilling pipeline back-dragging linear counterweight device and back-dragging construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214174, Chang 8 Garden Road, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi Patentee after: Zhongdizhuang (Wuxi) drilling tools Co., Ltd Address before: 214174, Chang 8 Garden Road, Huishan Economic Development Zone, Huishan District, Jiangsu, Wuxi Patentee before: WUXI DRILLING TOOLS FACTORY |
|
| CP01 | Change in the name or title of a patent holder |