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 efficienc

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0081] Specific Example 1 of Double Structure TBM provided by the present invention:

[0082] The structure of the double structure TBM provided in this embodiment is as Figure 1 to 3 As shown, including the main beam 111, the front end of the main beam 111, the front end of the shield 101 is provided, and the cutter disk 100 is disposed on the back side of the main beam 111 in the back side of the shield 101 and the steel arch assembled machine. .

[0083] The main beam 111 is slippently assembled with a saddle 106, and the saddle 106 is assembled with a bootstraphotel 107, and, for example, figure 2 As shown, it is possible to assemble the saddle supporting boots 108 at the bottom of the saddle 106, and it is necessary to fix the side struts 107 on the saddle support boots 108 with the saddle support boots 108 in the shield propulsion traction mode. Thereby, the two side struts 107 form a whole, and, in order to increase the stability of the two-side struts, the top portion of t...

Example Embodiment

[0129] Specific Example 2 of the Double Structure TBM provided by the present invention:

[0130] Its difference from the first embodiment is mainly in: in Example 1, the main propulsion commutation valve is used as the main propulsion commutation device, and the promotion of the pump source is propelled to provide hydraulic oil to the main rod cavity, or push the main Hydraulic oil is supplied. In the present embodiment, the main propulsion commutation device can use a plug-in valve to configure a plug-in valve, select a suitable insertion element combination to form a composite valve, meet the requirements: push the pump source to the main rod cavity The oil passage supplies hydraulic oil while enabling the main propulsion of the non-rod oil and the fuel tank, and in the promotion of the pumping source to supply hydraulic oil to the mainstay, the main promotion has a rod cavity oil and fuel tanks.

[0131] Of course, in other embodiments, the main propulsion commutation apparatu...

Example Embodiment

[0132] Specific Example 3 of the Double Structure TBM provided by the present invention:

[0133] The difference from the first embodiment is mainly in: in Example 1, in the main propulsion hydraulic circuit, there is a floating oil passage between the main propulsion of the rod cavity oil and the main propulsion, which makes the main propelled hydraulic circuit. It is possible to make the master push the cylinder in a floating state. In the present embodiment, the main propulsion commutation valve can be a Y-type commutation valve, wherein the inter-position is a floating station, which can make the main propelion of the rod cavity, the main promotion of the non-rod cavity oil and connects with the tank while Make the main propulsion cylinder in a floating state.

[0134] At this time, the hydraulic oil in the main push of the cylinder can flow back to the fuel tank. When the hydraulic oil is required, the suction of the main propulsion cylinder can be added directly from the tan...

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PUM

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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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