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Secondary grouting device for shield tunneling machine

A secondary grouting and shield machine technology, which is applied in shaft equipment, shaft lining, mining equipment, etc., can solve the problems of mortar waste and leakage, and achieve the effects of reducing waste, reducing wear and tear, and improving utilization

Pending Publication Date: 2022-08-05
BEIJING MUNICIPAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] When the existing shield machine secondary grouting equipment is in use, the grouting pipe is inserted in the middle of the segment, and then the top of the segment is grouted. There will be vibration, and it is found that the mortar sprayed from the top of the grouting pipe is easy to leak from the connection between the grouting pipe and the segment, which leads to the waste of mortar

Method used

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  • Secondary grouting device for shield tunneling machine
  • Secondary grouting device for shield tunneling machine
  • Secondary grouting device for shield tunneling machine

Examples

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Effect test

Embodiment 1

[0031] like Figure 1 to Figure 5 As shown, a secondary grouting device for a shield machine according to an embodiment of the present invention includes a hydraulic oil cylinder 1; an output end of the hydraulic oil cylinder 1 is fixedly connected with a grouting pipe 11; the middle of the grouting pipe 11 communicates with There is a feeding pipe 12; the top of the grouting pipe 11 is fixed with a guide plate 13; the guide plate 13 is provided with a pair on the top of the grouting pipe 11;

[0032] When the grouting pipe 11 needs to be grouted, first introduce the grouting material from the feeding pipe 12 (the grouting material adopts double-liquid slurry: namely water glass + cement slurry, wherein: cement: P.O42.5, water glass: 35Be); wherein the grouting process is:

[0033] 1. Grouting sequence: The secondary grouting should be carried out after the shield passes through 5 to 8 rings, and the same ring segment is injected in strict accordance with the method of "first...

Embodiment 2

[0051] like Image 6 As shown, Comparative Example 1, wherein another embodiment of the present invention is: the end of the elastic sheet 2 is provided with an elastic sheet 8; the elastic sheet 8 is fixed to the elastic sheet 2; The shrapnel 8 is provided so that when the mortar is ejected from the grouting pipe 11, the shrapnel 8 can contact the mortar more effectively, and at the same time, when the grouting pipe 11 stops grouting, it can reduce the large pieces of impurities falling inside the tunnel. The problem of entering the inside of the grouting pipe 11.

[0052] Each end of the elastic sheet 2 is fixed with a fourth magnet 9 ; the fourth magnet 9 is covered with a rubber pad 91 ; the fourth magnets 9 that are close to each other are arranged to attract each other; A fourth magnet 9 is provided between the ends. When the elastic sheets 2 are close to each other, the two fourth magnets 9 are attracted to each other, and the stability of the elastic sheet 2 in protec...

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Abstract

The invention belongs to the technical field of grouting devices, and particularly relates to a secondary grouting device for a shield tunneling machine. The output end of the hydraulic oil cylinder is fixedly connected with a grouting pipe; the middle part of the grouting pipe is communicated with a feeding pipe; the top of the grouting pipe is fixedly connected with a guide plate; a pair of guide plates is arranged at the top of the grouting pipe; the guide plates are arranged at the ends of the grouting pipes, injected mortar can be guided to the tops of the pipe pieces, namely the two sides of the grouting pipes, in the grouting process of the grouting pipes, the guide plates can prevent the mortar from flowing to the joints of the grouting pipes and the pipe pieces, the utilization rate of the mortar is increased, and waste of the mortar is reduced; and meanwhile, the problem of abrasion of the grouting pipe due to the fact that mortar enters a joint between the grouting pipe and the pipe piece can be reduced.

Description

technical field [0001] The invention belongs to the technical field of grouting, in particular to a secondary grouting device for a shield machine. Background technique [0002] In the construction of shield machine, due to the relatively fast advancement speed of the shield in the formation, and the automatic grouting outlets are distributed in the upper part, it is difficult to form a single solidified body after slurry injection, especially in the middle and lower parts, forming local injection blind spots , it is necessary to carry out the secondary grouting in time for the segment that is out of the shield tail. [0003] A Chinese patent with publication number CN114033423A discloses a device, method and shield machine for secondary grouting of shield machine, a device for secondary grouting of shield machine, including A supported track and a grouting mechanism that can move along the track, the track is arranged along the tunnel circumferential direction, and the gro...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D9/06
CPCE21D11/105E21D9/0609
Inventor 孟庆龙张永恒刘乐天朱秀坤刘明华何富思杨东宝高峥宇田胜领李坤
Owner BEIJING MUNICIPAL CONSTR
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