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Middle shield and tail shield sealing connection device, shield body of shield machine, and shield machine

A connecting device and shield machine technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of shield joint seal failure, mud backflow, etc., and achieve the effect of avoiding seal failure and ensuring seal stability

Active Publication Date: 2017-06-06
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a sealing connection device for the middle shield and the tail shield that can be applied to small curve radius turns, which effectively solves the problem of the shield body being damaged when the shield machine is traveling in a tunnel with a turning radius less than 250 meters. The technical problem of mud backflow due to the failure of the hinge seal

Method used

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  • Middle shield and tail shield sealing connection device, shield body of shield machine, and shield machine
  • Middle shield and tail shield sealing connection device, shield body of shield machine, and shield machine
  • Middle shield and tail shield sealing connection device, shield body of shield machine, and shield machine

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Embodiment 2

[0043] like Figure 10 As shown, the difference between the present embodiment and the first embodiment lies in that the position of the connecting piece 7 is different, the position of the finger seal brush 12 is different, and the position of the pin shaft 93 in the limit assembly 9 is different. The connecting piece 7 in this embodiment is fixedly arranged on the end of the middle shield 3, and the connecting piece 7 is coaxially sleeved on the outer peripheral surface of the front end of the tail shield 4, and the spherical contact surface on the connecting piece 7 is arranged on the connecting piece. On the inner peripheral surface of member 7, the midpoint of the spherical contact surface is located on the axis of the shield. The finger-type sealing brush 12 is fixedly arranged on the outer peripheral surface of the front end of the tail shield 4, and is sealingly matched with the spherical contact surface. The pin shaft 93 of the limit assembly 9 is fixedly arranged on...

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Abstract

The invention belongs to the technical field of tunneling equipment, and particularly discloses a middle shield and tail shield sealing connection device; further, the invention a discloses a shield body of a shield machine using the sealing connection device and the shield machine using the shield body of the shield machine. The middle shield and tail shield sealing connection device provided by the invention comprises a connecting mechanism and a sealing mechanism, wherein the connecting mechanism is connected between the middle shield and the tail shield and allows the middle shield to rotate left and right relative to the tail shield; the sealing mechanism is correspondingly arranged on the middle shield or the tail shield and is in sealing cooperation with the connecting mechanism. The sealing connection mechanism provided by the invention can guarantee that the middle shield and the tail shield rotate relatively to adapt to the turning radius when the shield body turns in the tunnel, and also can maintain sealing isolation of the internal part of the shield body and the external part of the shield body to prevent slurry from reversely pouring and entering the internal part of the shield body.

Description

technical field [0001] The invention belongs to the technical field of tunneling equipment, and in particular relates to a sealing connection device for a middle shield and a tail shield, and meanwhile, the invention also relates to a shield body of a shield machine and a shield machine. Background technique [0002] During the actual construction process of the shield machine, due to the complex soil conditions of the cut soil layer, the earth pressure on each part of the shell is inconsistent, resulting in a deviation between the forward direction of the shield machine and the centerline of the original tunnel design. When this deviation occurs, the shield machine needs to adjust its attitude to reduce or even eliminate this deviation. Therefore, the shield machine should have the ability to turn flexibly and dynamically adjust the direction of advancement. [0003] like figure 1 The structure schematic diagram of the shield machine is shown, and the existing shield machi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
CPCE21D9/06
Inventor 石小伟张树祺袁文征
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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