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Double-structure TBM hydraulic propelling system and double-structure TBM

A propulsion system and dual-structure technology, which is applied in the field of shield machines, can solve the problems that affect the tunneling efficiency, the processing time of the stuck machine is long, and the propulsion system cannot meet the construction needs.

Active Publication Date: 2021-07-30
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shield body of the shield TBM is longer than that of the open TBM, which increases the risk of jamming, especially when excavating in large deformation and convergent formations, the processing time of the jamming is longer, which affects the excavation efficiency
[0005] Due to the complex and diverse stratum structure, the propulsion system of a single-structure TBM cannot meet the construction requirements, and any single-structure TBM propulsion system has certain limitations in the face of complex surrounding rock geology

Method used

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  • Double-structure TBM hydraulic propelling system and double-structure TBM
  • Double-structure TBM hydraulic propelling system and double-structure TBM
  • Double-structure TBM hydraulic propelling system and double-structure TBM

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Experimental program
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Effect test

specific Embodiment 1

[0082] The structure of the dual-structure TBM provided in this embodiment is as follows Figure 1 to Figure 3 As shown, it includes a main beam 111, a shield body 101 is installed at the front end of the main beam 111, a cutter head 100 is arranged at the front end of the shield body 101, and a steel pipe sheet assembly machine 102 and a steel arch assembly machine are arranged on the main beam 111 at the rear side of the shield body 101 .

[0083] The main beam 111 is slidably equipped with a saddle frame 106, and the saddle frame 106 is equipped with a spreader shoe 107 through a shoe cylinder, and, as figure 2 As shown, the saddle frame support shoe 108 can be assembled at the bottom of the saddle frame 106. It should be noted that, in the shield body advancing excavation mode, the saddle frame support shoe 108 is fixedly connected with the two side support shoes 107 on the saddle frame 106, Thereby, the two sides of the boots 107 are formed as a whole, and, in order to ...

specific Embodiment 2

[0130] The main difference from Embodiment 1 is that in Embodiment 1, the main propulsion reversing valve is used as the main propulsion reversing device, and the propulsion pump source is controlled to provide hydraulic oil to the main propulsion rod cavity oil circuit, or to the main propulsion rodless The cavity oil circuit provides hydraulic oil. In this embodiment, the main propulsion reversing device can use a cartridge valve. When configuring the cartridge valve, select appropriate cartridge components to form a composite valve, which can meet the following requirements: The oil circuit supplies hydraulic oil, and at the same time connects the oil circuit of the main propulsion rodless chamber with the fuel tank, while the propulsion pump source supplies hydraulic oil to the oil circuit of the main propulsion rodless chamber, and at the same time communicates the oil circuit of the main propulsion rod chamber with the fuel tank.

[0131] Of course, in other embodiments,...

specific Embodiment 3

[0133] The main difference from Embodiment 1 is that in Embodiment 1, in the main propulsion hydraulic circuit, a floating oil circuit is provided between the main propulsion rodless chamber oil circuit and the main propulsion rod chamber oil circuit, so that the main propulsion hydraulic circuit It can make the main propulsion oil cylinder in a floating state. In this embodiment, the main propulsion reversing valve can be a Y-type reversing valve, and its middle position is a floating station, which can make the main propulsion rod chamber oil circuit and the main propulsion rodless chamber oil circuit communicate with the oil tank at the same time, thereby Keep the main propulsion cylinder in a floating state.

[0134] At this time, the excess hydraulic oil when the main propulsion cylinder is floating can directly flow back to the oil tank. When the hydraulic oil needs to be replenished during floating, the suction formed by the main propulsion cylinder can be used to direc...

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Abstract

The invention relates to a double-structure TBM hydraulic propelling system and a double-structure TBM. The hydraulic propelling system comprises a main propelling oil cylinder and a shield body propelling oil cylinder and further comprises a main propelling hydraulic loop which can drive the main propelling oil cylinder to stretch out and draw back actively and can float under the following working conditions that: in a shield body propelling tunneling mode, when a main beam of a TBM advances and a saddle support shoe and / or a supporting shoe of the TBM support a tunnel wall, a main propelling hydraulic loop can enable the main propelling oil cylinder to float to ensure relative slippage of the main beam and the saddle; and in a shield body propelling tunneling mode, the saddle support shoe can be used for providing supporting force to support the main beam, or the supporting shoe can be used for providing rear supporting force to support the main beam, or horizontal direction adjusting acting force is provided, horizontal direction adjusting while tunneling is achieved, and the shield body propelling tunneling mode of the double-structure TBM is improved.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a double-structure TBM hydraulic propulsion system and a double-structure TBM. Background technique [0002] With the vigorous development of China's shield industry, the application of hard rock tunnel boring machine (abbreviated as TBM) is also increasing. TBM can be divided into open TBM and shield TBM. [0003] When the open-type TBM is working, it adopts the spray anchor support method, and the main propulsion cylinder provides power for the main engine to drive forward, and the forward supporting reaction force is provided by the support shoes after the tunnel wall is tightened. When the TBM passes through the broken surrounding rock, the support shoes cannot directly support the broken surrounding rock, and cannot obtain enough supporting reaction force, and the thrust of the propulsion system will be greatly reduced. The normal excavation can only be ...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D9/087E21D11/08E21F17/00
CPCE21D9/0621E21D9/087E21D11/08E21F17/00
Inventor 马志勇郑博蔡留金周小磊杜旭峰鲁亚明詹晨菲郭攀登丁银亭于刘帅
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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