tbm test bench thrust load simulation hydraulic system
A thrust load, hydraulic system technology, used in fluid pressure actuation devices, servo motors, servo motor components, etc., can solve the problems of low loading accuracy and inability to smoothly buffer large loads.
Active Publication Date: 2016-04-13
ZHEJIANG UNIV
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Problems solved by technology
[0005] After searching the existing technical literature, it is found that the thrust load simulation and testing device currently used in linear motion is mainly based on the simulation test platform constructed by linear motors and magnetic powder brakes. Although the device loads smoothly and has no noise, the loading accuracy is not good High, the most important thing is that when simulating sudden loads and large eccentric loads, it cannot smoothly buffer the fluctuations caused by large loads
To sum up, there is currently no system dedicated to simulating the thrust load of the TBM test bench
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] The thrust load simulation hydraulic system of the TBM test bench is composed of four thrust load oil circuits with the same structure; each load oil circuit includes: oil tank 1, safety valve 2, three-position four-way reversing valve 3, proportional overflow Valve 4, electronically controlled one-way valve 5, two stop valves 6, hydraulic cylinder 7, displacement sensor 8, pressure gauge 9; the oil inlets of the four thrust load oil circuits are connected in parallel, and high-pressure oil H1 enters the inlet of each oil circuit The connection relationship of the oil circuit behind the oil port is: one way of high-pressure oil H1 is connected to the P port of the three-position four-way reversing valve 3, and the other is connected to the oil tank 1 through the safety valve 2; the T port of the three-position four-way reversing valve 3 Connected...
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The invention discloses a thrust load simulation hydraulic system of a TBM (tunnel boring machine) test bed. The thrust load simulation hydraulic system is composed of four completely-identical thrust load oil ways, each thrust load oil way comprises an oil tank, a safety valve, a three-position four-way reversing valve, a proportional overflow valve, an electric-control one-way valve, two stop valves, a hydraulic cylinder, a displacement sensor and a piezometer, and oil inlets of the four thrust load oil ways are parallelly connected. Different TBM thrust loads are simulated by controlling overflow pressure of the proportional overflow valve of each thrust module; normal thrust load and thrust unbalance load of a TBM are simulated by controlling whether overflow pressure of the proportional overflow valves of the thrust modules is identical or not; displacement and pressure of the hydraulic cylinder in each thrust module can be monitored in real time through the corresponding displacement sensor and the corresponding piezometer in the corresponding thrust module; thrust suddenly-changing load and large unbalance load of the TBM are simulated by closing the stop valves at the oil inlet and an oil outlet of the hydraulic cylinder of each thrust module to cut off an overflow oil way. By the thrust load simulation hydraulic system, various TBM thrust loads under different geological environments can be simulated.
Description
technical field [0001] The invention relates to a load simulation hydraulic system, in particular to a TBM test bench thrust load simulation hydraulic system. Background technique [0002] Tunnel Boring Machine (TBM for short) is a highly intelligent tunnel construction major technical engineering equipment integrating machinery, electricity, hydraulics, light, and computer. Due to the advantages of fast excavation speed, stable construction quality, good safe operation conditions, and small impact on the ecological environment, TBM has been widely used in tunnel engineering construction at home and abroad. [0003] TBM is a special kind of construction machinery, which needs to adapt to various strata and geology of construction tunnels, and needs to be designed and developed according to specific geological conditions. Tunnel engineering has a very complex geological environment, and numerical calculation and simulation are difficult to meet the requirements of research. ...
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IPC IPC(8): F15B11/00F15B13/02
Inventor 龚国芳饶云意吴伟强张振刘统杨华勇
Owner ZHEJIANG UNIV