Shield tail grouting liquid mixing valve

A grouting and liquid mixing technology, applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of complex structure and inconvenient construction operation, and achieve the effect of simplifying steps and reducing workload
CN110952991APending Publication Date: 2020-04-03CHINA RAILWAY 14TH BUREAU GRP LARGE SHIELD ENG CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA RAILWAY 14TH BUREAU GRP LARGE SHIELD ENG CO LTD
Publication Date
2020-04-03

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Abstract

The invention belongs to the technical field of accessories of shield equipment and particularly relates to a shield tail grouting liquid mixing valve which comprises a mounting block, wherein a protruding block is fixedly mounted at the bottom of the mounting block and has a thickness of 23 cm; an embedded block is fixed at the bottom of the mounting block; a sealing groove is formed in the top of the mounting block, has a width of 5 cm and has a thickness of 2 cm; and a grouting passage is formed among the mounting block, the protruding block and the embedded block. According to the shield tail grouting liquid mixing valve, the structure of a sealing element of the existing grouting opening is improved; the protruding block and the grouting passage are additionally arranged on the basisof the original structure; after the mounting block is fixed, the embedded block is matched with the sealing groove to seal the grouting opening; due to existence of the grouting passage, a grout feeding passage and a grout discharging passage enable the grouting opening to communicate with the external world, and a pipeline directly communicates with the grout feeding passage for grouting operation, so that the step of shield tail grouting operation is simplified, fast shield tail grouting is facilitated, and the workload is reduced.
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Description

technical field

[0001] The invention relates to the technical field of shield equipment accessories, in particular to a shield tail grouting mixing liquid valve. Background technique

[0002] The construction method of shield tunneling is a construction method that constructs (lays) supporting segments at the same time in the process of excavating the tunnel. The tunnel construction using shield tunneling machinery has the advantages of high automation, manpower saving, fast construction speed, one-time hole formation, It is not affected by the climate, and the ground subsidence can be controlled during construction. It is the preferred method for tunnel excavation at present.

[0003] Shield construction requires the use of a shield machine, a shield machine, the full name of which is a tunnel boring machine. It is a special construction machine for tunneling. Integrating information technology, it has the functions of excavating and cutting soil, transporting soil muck, a...

Claims

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