Front shield system of dual-mode shield tunneling machine
A shield machine and dual-mode technology, which is applied in the field of front-shield systems, can solve the problems of time-consuming dual-mode shield machines, achieve the effect of convenient and fast switching process, and improve work efficiency
Inactive Publication Date: 2015-11-25
CHONGQING TENGHAN IND & TRADE
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Problems solved by technology
[0005] The purpose of the present invention is to provide a front shield system that can solve the problem of the time-consuming dual-mode shield machine that needs to withdraw the conveyor belt from the channel and then seal it when switching between the sealed and open types.
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings by means of specific embodiments:
[0019] Such as figure 1 , figure 2 and image 3 As shown, the front shield system of the dual-mode shield machine includes a long cylindrical front shield body 1, the motor shaft hole 3 is arranged around the front shield body 1, and the nozzle channel hole 5 is arranged on the upper part of the front shield body 1 , the lower part of the front shield body 1 is provided with a screw machine channel hole 4, the middle part of the front shield body is set as the transport channel hole 2 of the conveyor belt, and the end of the transport channel hole 2 near the position of the cutter head is set as a tapered mouth 21 which is gradually retracted, and the transport channel hole 2 is embedded with a carrier 6 for installing the transmission belt, the outer wall of the carrier 6 matches the inner wall of the transport channel hol...
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The invention relates to the field of shield tunneling machines, in particular to a front shield system of a dual-mode shield tunneling machine. The dual-mode shield tunneling machine comprises a long cylindrical front shield body. Motor shaft holes are formed in the periphery of the front shield body. A spray pipe channel hole is formed in the upper portion of the front shield body. A spiral machine channel hole is formed in the lower portion of the front shield body. A conveying channel hole of a conveying belt is formed in the middle of the front shield body. The end, close to a cutter head, of the conveying channel hole is provided with a conical opening which is gradually shrunk inwards. A bearing body for installation of the conveying belt is embedded in the conveying channel hole. The outer wall of the bearing body is matched with the inner wall of the conveying channel hole. The end, close to the cutter head, of the bearing body is provided with a frustum head capable of being in sealing fit with the conical opening. The other end of the bearing body is connected with a hydraulic cylinder enabling the bearing body to stretch and retract. The front shield system of the dual-mode shield tunneling machine has the advantages that the whole switching process is convenient and fast, the conveying belt does not need to be disassembled, a conveying channel does not need to be independently sealed, and the tunneling efficiency of the shield tunneling machine is improved.
Description
technical field [0001] The invention belongs to the field of shield machines, in particular to a front shield system of a double-mode shield machine. Background technique [0002] Shield machine (full name shield tunnel boring machine) is a kind of construction machinery specially used for tunnel excavation. It has been proved to be a cost-effective tunnel construction machine and is widely used in subways, railways, highways, municipal , hydropower and other tunnel projects. [0003] The excavation body of the shield machine is generally divided into front shield, middle shield and tail shield. The function of the front shield is to fix the cutterhead, conveying equipment and mud pipes required for excavation; The setting position of the segment machine is also the construction position of the temporary platform for manual operation of the hydraulic circuit and control equipment. Among the shield machines currently used at home and abroad, they can be divided into closed ...
Claims
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IPC IPC(8): E21D9/08
Inventor 丁丽霞
Owner CHONGQING TENGHAN IND & TRADE