Pipe jacking stop device and its installation method
A technology of a backstop device and an installation method, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., and can solve the problems of troublesome installation of chain hoists, low reliability of chain hoists, and easy breakage at the joints, etc. , to achieve the effect of high construction efficiency, fast reliability, and convenient dismantling
Active Publication Date: 2017-12-08
CHINA RAILWAY NO 2 ENG GRP CO LTD
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Problems solved by technology
However, after each jacking segment is jacked, a hand chain hoist is required, and the process of installing the hand chain hoist is cumbersome. In addition, the reliability of the hand chain hoist is not high, and the joints are prone to breakage, so it is necessary to find A more reliable technical means to implement
Method used
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Embodiment
[0030] In this embodiment, the construction of a rectangular pipe jacking channel in the underground construction of a certain project is taken as an example. During the jacking process of the rectangular pipe jacking section, a pipe jacking machine is used to excavate a hole, such as figure 1 Said:
[0031] The anti-backward device of the pipe jacking machine in this embodiment, the anti-backward device includes a vertical right-angled side 44, a horizontal right-angled side 41 and a hypotenuse 45, and the anti-backward device is connected at a right angle by the vertical right-angled side, the horizontal right-angled side and the hypotenuse Triangular shape, the locking device is provided with a pin hole sleeve 42 .
[0032] In this embodiment, the pin hole sleeve 42 is arranged on the vertical right-angled side 44, and a backing plate 43 is connected to the vertical right-angled side 44, and the described pin hole sleeve 42 is arranged on the backing plate 43, and the backi...
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The invention discloses the pipe jacking machine construction technology and relates to a pipe jacking machine retaining device and a mounting method thereof. The mounting method includes: determining the mounting position of the retaining device; cutting profile steel splicing the retaining device; hoisting and welding; inspecting welding quality; releasing front-side earth pressure; mounting bolts and cushion blocks. The method has the advantages that pipe jacking pipe joint construction is systematically planned, the hoisting holes in pipe jacking pipe joints and a downhole construction starting frame are ingeniously utilized, the retaining device is fixed on the starting frame and connected with the pipe jacking pipe joints through the bolts, demounting convenience after construction is achieved, high construction efficiency and low comprehensive cost are achieved, the problems that earth mass in front of a nose collapses easily and a road surface and pipelines subside during pipe jacking construction pipe joint splicing or cushion block adding, and the method is convenient, fast and good in reliability during retaining device mounting.
Description
technical field [0001] The invention relates to a construction technology of a pipe jacking machine, in particular to an anti-retraction device of a pipe jacking machine and an installation method thereof. Background technique [0002] Pipe jacking construction is a non-excavation construction method, which refers to a pipeline burial construction technology that does not excavate or excavates less. The pipe jacking machine is used to excavate the hole, and the jack installed in the originating shaft is used to jack the prefabricated pipe jacking pipe joints from the jacking originating shaft to the receiving shaft to form a pipeline laying technology with a continuous lining structure. [0003] When the pipe jacking machine stops, under the action of the axial thrust of the soil layer on the front of the pipe jacking machine, the pipe jacking machine and the pipe joints will retreat as a whole. The main jacking cylinder of the pipe jacking machine retracts, and the machine...
Claims
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IPC IPC(8): E21D9/00
Inventor 刘杰陈卓陈强夏炜洋梁梦秋
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD