一种TBM多模式推进液压控制系统
By designing a TBM multi-mode hydraulic control system, using components such as a variable frequency motor, a variable displacement piston pump, and a three-position four-way hydraulic control directional valve, the problems of uniform propulsion force distribution and attitude control in the propulsion system were solved, improving the reliability and efficiency of the propulsion system and enhancing the stability and flexibility of the equipment under complex geological conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SUNWARD ENG EQUIP CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing TBM hydraulic control systems face challenges in matching thrust in unevenly hard and soft strata. This results in high thrust required to break through hard rock, while soft rock is prone to slippage or strata deformation, making it impossible to effectively transmit thrust. This can lead to cutterhead jamming or deviation in the tunneling direction, especially under complex geological conditions, posing risks to attitude control and machine jamming.
Design a TBM multi-mode hydraulic control system, using components such as variable frequency motor, variable displacement piston pump, proportional relief valve and three-position four-way hydraulic control directional valve to achieve uniform propulsion force distribution and attitude control. Improve the reliability and efficiency of the propulsion system through pressure-displacement closed-loop control.
It achieves uniform propulsion force distribution, improves the working efficiency and operational safety of the TBM, reduces the complexity of propulsion system control components, and enhances the stability and flexibility of the equipment under complex geological conditions.
Smart Images
Figure CN224515506U_ABST
Abstract
Claims
1. A TBM multi-mode propulsion hydraulic control system, characterized by, include: A variable frequency motor (1) is rigidly connected to a variable displacement piston pump (2) on one side via a coupling; The oil inlet of the variable piston pump (2) is connected to the oil tank. The variable piston pump (2) is a constant pressure pump. The top of the variable piston pump (2) is sealed and connected to a first proportional relief valve (3). The first proportional relief valve (3) controls the outlet pressure of the pump. The top of the first proportional relief valve (3) is sealed and connected to a first relief valve (4). The first relief valve (4) limits the maximum system pressure of the entire system and protects the service life of the variable piston pump (2). The top of the variable piston pump (2) is sealed and connected to a high pressure filter (5). The oil outlet of the high pressure filter (5) is simultaneously sealed and connected to a three-position four-way hydraulic control directional valve (6) and a proportional speed control valve group (7) through an oil inlet. The three-position four-way hydraulic control directional valve (6) controls the extension and retraction of the entire propulsion cylinder.
2. A TBM multi-mode propulsion hydraulic control system as claimed in claim 1, wherein: The three-position four-way hydraulic control directional valve (6) is connected to the oil inlet of the propulsion valve group (8), and the top of the propulsion valve group (8) is provided with several stroke detection propulsion cylinders (9).
3. A TBM multi-mode propulsion hydraulic control system as claimed in claim 2, characterized in that: One of the stroke detection propulsion cylinders (9) is provided with a propulsion cylinder pressure valve (10) on one side, and a propulsion valve group pressure valve (11) is provided on the bottom side of the propulsion cylinder pressure valve (10).
4. A TBM multi-mode propulsion hydraulic control system as claimed in claim 2, wherein: The propulsion valve group (8) is internally composed of a second proportional relief valve (12), a first proportional speed control valve (13), a return oil cartridge valve (14), a second relief valve (15), a first solenoid ball valve (16), a pressure sensor (17), a second solenoid ball valve (18), an oil inlet cartridge valve (19), and a third solenoid ball valve (20).
5. A TBM multi-mode propulsion hydraulic control system as claimed in claim 1, wherein: The proportional speed control valve group (7) is internally composed of a second proportional speed control valve (21) and a fourth electromagnetic ball valve (22).
6. A TBM multi-mode propulsion hydraulic control system as claimed in claim 4, wherein: The propulsion valve assembly (8) controls the extension and retraction of the propulsion cylinder (9) with stroke detection.