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Novel flexible arm TBM propelling hydraulic system and control method

A hydraulic system and flexible arm technology, applied in the new flexible arm TBM propulsion hydraulic system and control field, can solve the problems of insufficient control accuracy and energy saving.

Pending Publication Date: 2020-03-31
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Correspondingly, the requirements for the hydraulic control system are also higher. The existing hydraulic control system cannot satisfy the flexible arm TBM in terms of control accuracy and energy saving. Therefore, in view of this feature, a new type of flexible arm TBM propulsion hydraulic system and Control methods are necessary

Method used

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  • Novel flexible arm TBM propelling hydraulic system and control method
  • Novel flexible arm TBM propelling hydraulic system and control method
  • Novel flexible arm TBM propelling hydraulic system and control method

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Embodiment 3

[0030] Embodiment 3, a control method of a novel flexible arm TBM propulsion hydraulic system, is characterized in that: the steps are as follows:

[0031] S1: When starting to work, under the action of the motor 17, the controller controls to open the servo valve 9, and part of the hydraulic oil in the constant pressure pump source 1 enters the servo valve 9 through the external control oil circuit 15;

[0032] S2: Then the hydraulic oil in the constant pressure pump source 1 enters the flexible arm cylinder 11 through the main oil circuit 14 and the servo valve 9, and drives the flexible arm cylinder 11 to perform telescopic movements;

[0033]S3: N flexible arm cylinders 11 of the propulsion cylinder mechanism arranged in parallel act together to adjust the position and angle of the cutter head 13; the displacement sensor 12 transmits the telescopic displacement signal of the flexible arm cylinder 11 to the controller, and the controller controls The servo valve 9 adjusts t...

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Abstract

The invention discloses a novel flexible arm TBM propelling hydraulic system and a control method. The system comprises a constant-pressure pump source and a controller which are connected with each other, and further comprises N propelling oil cylinder mechanisms which are arranged in parallel, N is larger than or equal to 2, the constant-pressure pump source is connected with the propelling oilcylinder mechanisms through a main oil way and an external control oil way which are arranged in parallel, a system loading valve is arranged on the main oil way, and a pressure reducing valve is arranged on the external control oil way. The system is advantaged in that the system is suitable for tunnel excavation of a cutter head driven by the multi-degree-of-freedom parallel robot, the multiplepropelling oil cylinder mechanisms are used in cooperation, the controller is matched with the hydraulic main oil way and the external control oil way, the propelling oil cylinder mechanisms are accurately controlled, and thereby the posture of the cutter head driven by parallel oil cylinders can be accurately controlled.

Description

technical field [0001] The invention relates to the technical field of flexible-arm TBM, in particular to a novel flexible-arm TBM propulsion hydraulic system and a control method. Background technique [0002] Rock tunnel boring machine (TBM) is a large-scale tunnel excavation equipment integrating mechanical, electrical, hydraulic and other technologies, and plays an important role in the construction of mountain tunnels and urban subway projects. At present, the excavation section of TBM is basically circular, and the cases of special-shaped sections such as rectangle and horseshoe are all used in the construction of soft soil tunnels, and once the excavation section is determined, it cannot be changed during the construction process, resulting in the shape of the excavation section Single, the scope of application is limited. The current status and planning of rock tunnel construction at home and abroad show that more and more projects use special-shaped sections. If th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02F15B11/16F15B13/06F15B21/041E21D9/10E21D9/11
CPCE21D9/108E21D9/11F15B1/02F15B11/161F15B13/06F15B21/041
Inventor 李建斌贾连辉许顺海周小磊詹晨菲文勇亮李光姜礼杰张凯于刘帅李太运朱雷罗恒星
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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