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Torque selection device for shield segment installing bolt

A technology for installing bolts and shield segments, which is applied in the field of shield machines, can solve the problems of large gaps in segment sealing performance, large gaps in sealing performance, and large gaps in mounting bolt torque, so as to improve segment assembly quality and reduce The effect of reducing the gap between segment torque values ​​and the gap between

Pending Publication Date: 2019-06-11
CHINA RAILWEY ENG SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the segments are assembled and fastened, the torque range of the segment mounting bolts is relatively large, resulting in a large gap in the sealing performance of the segments
For example, when using M30-8.8 grade mounting bolts for installation, the torque of the mounting bolts is between 1510N m-1900 N m, and the torque difference of the mounting bolts is large, resulting in a large gap in the sealing performance

Method used

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  • Torque selection device for shield segment installing bolt
  • Torque selection device for shield segment installing bolt
  • Torque selection device for shield segment installing bolt

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Attached below figure 1 And attached figure 2 Embodiments of the present invention are described in detail.

[0023] The torque selection device for the shield segment mounting bolts includes a power mechanism 1 that moves the upper sealing cover 2 back and forth on a linear path, and at the same time, a lower sealing cover 3 is fixedly arranged on the moving path of the upper sealing cover 2, so that when When the upper sealing cover 2 moves to the lower sealing cover 3, it can tightly fit the lower sealing cover 3, and a container chamber is arranged on the contact surface between the lower sealing cover 3 and the upper sealing cover 2 12, and a sealing strip 6 surrounding the container chamber 12 is provided on the contact surface between the lower sealing cover 3 and the upper sealing cover 2, correspondingly on the contact surface between the upper seali...

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Abstract

The present invention relates to the technical field of shield machines, and particularly relates to a torque selection device for a shield segment installing bolt. The torque selection device drivesa jack through a hand pump so that the jack drives an upper sealing end cover to move back and forth in a straight line. A lower sealing end cover is arranged on a motion path of the upper sealing endcover. A container chamber is arranged on the lower sealing end cover, and a sealing strip surrounding the container chamber is arranged on the lower sealing end cover. A sealing strip is also correspondingly arranged on the upper sealing end cover so that when the upper sealing end cover is in contact with the lower sealing end cover, two sealing strips thereon can be tightly fitted. Thus, the space of the container chamber is closed. High-pressure water is injected into the container chamber through a ball valve, and a pressure gauge is installed on a high-pressure water pipeline to check whether water leaks. Forces received by the sealing strips per unit length are converted in combination with the pressure of the pressure gauge of the hand pump and the length of the sealing strips, and a bolt pre-tightening force on the premise of ensuring the compression amount of the sealing during installation of a segment is inversely calculated.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a torque selection device for connecting bolts of shield segment segments. Background technique [0002] The shield segment is the main assembly component in shield construction and the innermost barrier of the tunnel. The quality and assembly of shield segments are directly related to the overall quality and safety of the tunnel, and affect the waterproof performance and durability of the tunnel. At present, when the segments are assembled and fastened, the torque range of the segment mounting bolts is relatively large, resulting in a large gap in the sealing performance of the segments. For example, when using M30-8.8 grade mounting bolts for installation, the torque of the mounting bolts is between 1510N m-1900 N m, and the torque difference of the mounting bolts is large, resulting in a large gap in the sealing performance. Contents of the invention [0003] Aimin...

Claims

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Application Information

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IPC IPC(8): G01L5/24E21D11/08
CPCY02E10/20
Inventor 杜涛郭涛苏金龙高旭东侯海燕周武夷段天文梅元元
Owner CHINA RAILWEY ENG SERVICE CO LTD
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