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Jacking pipe retreat stop limiting device and application method thereof

A technology of limiting device and backstop, which is applied in the field of pipe jacking and backstopping device, can solve cumbersome and other problems, achieve the effects of being convenient to use, saving the workload of welding and dismantling, and improving construction efficiency

Pending Publication Date: 2019-03-12
SHANGHAI MUNICIPAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The anti-retraction measures in the prior art require welding between the pipe material and the guide rail, and the pipe joints are cut off before splicing. This step needs to be repeated for each section of pipe to be jacked, which is cumbersome

Method used

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  • Jacking pipe retreat stop limiting device and application method thereof
  • Jacking pipe retreat stop limiting device and application method thereof
  • Jacking pipe retreat stop limiting device and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to Figure 1 to Figure 2 , a pipe jacking anti-retraction limiting device provided in this embodiment includes a base 1, two channel steels 2 arranged in parallel on the base 1, and guide rails 3 arranged on the channel steels 2, the channel steels 2 and A through groove 6 is arranged in the middle of the guide rail 3 , a jack 4 and a T-shaped steel plate 5 are arranged in the groove 6 , and the T-shaped steel plate 5 is arranged on the top of the jack 4 .

[0036] In the present embodiment, a pipe jacking stop and limit device is provided with a through groove 6 in the middle of the channel steel 2 and the guide rail 3 , and the jack 4 with the T-shaped steel plate 5 on the upper part is placed in the groove 6 . During pipe jacking construction, after the afterbody of pipe joint 9 exceeds groove 6, just can raise jack 4, make T-shaped steel plate 5 block the afterbody of pipe joint 9, prevent pipe joint 9 from retreating. After finishing using, just can retract ...

Embodiment 2

[0045] refer to Figure 1 to Figure 2 , this embodiment provides a method for using the pipe jacking stop and stop device described in Embodiment 1.

[0046] The technical scheme of the method for using the pipe jacking stop and stop device of this embodiment is as follows, including the following steps:

[0047] The first step is to determine the position of the groove 6 in the channel steel 2 and the guide rail 3;

[0048] In the second step, a groove 6 is provided, and the jack 4 with a T-shaped steel plate 5 placed on the upper part is placed in the groove 6;

[0049] The third step is to adjust the jack 4 so that the upper edge of the upper steel plate of the T-shaped steel plate 5 is flush with the upper edge of the guide rail 3;

[0050] The fourth step is to jack the pipe joint 9 along the guide rail 3;

[0051] In the fifth step, when the tail of the pipe joint 9 exceeds the groove 6, the jack 4 is raised so that the T-shaped steel plate 5 blocks the tail of the pipe...

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Abstract

The invention provides a jacking pipe retreat stop limiting device and an application method thereof so as to simplify the jacking pipe retreat stop construction technology and improve jacking pipe construction. According to the jacking pipe retreat stop limiting device, penetrating grooves are formed in box iron and the middle portions of guide rails, and jacks with the upper portions provided with T-shaped steel plates are arranged in the grooves. During jacking pipe jacking construction, after the tail of a pipe joint exceeds the grooves, the jacks can ascend, the T-shaped steel plates clamp the tail of the pipe joint, and pipe joint retreating is prevented. After usage, the jacks can be controlled to contract the T-shaped plates in time, and subsequent work is conducted. The jacking pipe retreat stop limiting device is convenient, safe and efficient to use and capable of being repeatedly used, the welding and dismounting workload is greatly reduced, the jacking pipe retreat stop construction technology is simplified, and the jacking pipe construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of pipe jacking construction, and in particular relates to a pipe jacking anti-retreat limiting device and a use method thereof. Background technique [0002] During the initial jacking stage of pipe jacking construction, the frontal earth pressure is much greater than the frictional resistance around the pipe. When splicing pipes, the main push jack must fix the jacked part and the well wall before retracting to prevent damage to the water stop device at the hole and poor pipe jacking posture caused by the retreat of the pipes. Therefore, corresponding anti-retreat measures must be taken to prevent the pipeline from retreating until the frictional resistance of the outer wall of the pipe is greater than the frontal earth pressure of the roadheader. [0003] The anti-retreat measure in the prior art is to bury pre-embedded steel plates in the shaft wall area outside the pipe jacking. During the initial jack...

Claims

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Application Information

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IPC IPC(8): F16L1/036F16L1/06
CPCF16L1/036F16L1/06
Inventor 陈强严国仙韩举宇姚茜茜
Owner SHANGHAI MUNICIPAL CONSTR