Normal-pressure hobbing cutter changing device

A tool changing device and pressure maintaining device technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of high risk of tool replacement, and achieve the effects of protecting health, reducing construction costs, and shortening the construction period

Active Publication Date: 2014-04-16
CHINA RAILWAY TUNNEL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art above, the present invention provides a hob tool changer commonly used to replace the hob under normal pressure while maintaining the pressure under the condition of high-pressure construction of the shield tunnel, which effectively solves the problem of wear and tear. The problem of high risk of tool replacement under high water pressure conditions in the construction of Jiangyue Sea Tunnel

Method used

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  • Normal-pressure hobbing cutter changing device
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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention will be further described:

[0023] Such as figure 1 Said, a hob normal pressure tool changing device, comprising a knife seat 3, a knife plate panel 2 connected with the knife seat 3, a hob 1 arranged on the knife seat 3, the knife seat 3 is connected with a pressure maintaining device, a The pressure device is connected with a lubricating device 14 and a high and low pressure isolation device 13, a pressure relief device 16 is arranged at the tail of the knife seat 3, and a knife seat removal device 15 connected to the knife seat 3.

[0024] Such as Figure 6 As shown, the pressure maintaining device includes a pressure maintaining chamber 6 , and a second O-ring 11 is arranged between the pressure maintaining chamber 6 and the knife seat 3 .

[0025] Such as figure 1 , image 3 and Figure 4 As shown, the lubricating device 14 includes an oil injection pipe joint 5 provided through the oil...

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PUM

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Abstract

The invention discloses a normal-pressure hobbing cutter changing device. The device comprises a tool apron (3), a cutterhead panel (2) connected with the tool apron (3) and a hobbing cutter (1) arranged on the tool apron (3), wherein the tool apron (3) is connected with a pressure retaining device which is connected with a lubricating device (14) and a high-low pressure isolating device (13), and a pressure relieving device (16) and a tool apron detaching device (15) connected with the tool apron (3) are arranged at the tail part of the tool apron (3). According to the device, the hobbing cutter of a shield is changed under a pressure retaining condition in a normal pressure environment through close matching of the pressure retaining device, the lubricating device, the high-low pressure isolating device, the pressure relieving device arranged at the tail part of the tool apron and the tool apron detaching device connected with the tool apron 3, wherein the lubricating device and the high-low pressure isolating device are arranged on the pressure retaining device; therefore, the risk of change of the cuter under a high-pressure water condition in a construction process of tunnels crossing over rivers and oceans is effectively overcome, the physical health of cutter changing workers is protected, the construction progress is accelerated, the construction period is shortened and the construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a cutter changing device for replacing a hob under normal pressure under pressure during the excavation process of the shield tunnel. Background technique [0002] With the rapid development of urbanization, transportation, water conservancy engineering and other industries, the application of tunnels in underground space is becoming more and more extensive. Shield construction is one of the most important construction methods in tunnel construction, and the cutting tools must be replaced during shield construction. Due to the complexity of the geology, in order to ensure the stability of the face and prevent the occurrence of water gushing, the pressure of the soil bin must be maintained during the tool change process. Therefore, the tool changer must withstand the high pressure environment of the soil bin. Tool changers must first increase the pressure before entering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
Inventor 陈馈洪开荣周建军韩伟锋李凤远陈啟伟李海明
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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