Normal-pressure hobbing cutter changing device

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...

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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

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