Railway track operating vehicle with closed static-pressure travelling system
A technology for railway tracks and working vehicles, which is applied to fluid pressure actuating devices, servo motors, mechanical equipment, etc., can solve the problems of difficulty in ensuring low-speed stability, poor low-speed stability, and inaccurate speed regulation, and achieve speed regulation. Precise, compact, smooth operation and commutation without shock
Inactive Publication Date: 2013-08-14
BAOJI CSR TIMES ENG MACHINERY
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Problems solved by technology
Mechanical transmission or hydraulic transmission can easily realize high-power and high-speed operation of rail work vehicles, but it is difficult to guarantee its low-speed stability
The hydraulic system of the open static pressure system is exposed to the outside. Not only is the efficiency low, but also the transmission route is complicated. It is difficult to arrange in the limited layout space of the frame. ok, so it is necessary to improve
Method used
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[0013] Attached below figure 1 , 2 and 3 describe embodiments of the present invention.
[0014] A railway track work vehicle with a closed static pressure running system includes a car body 12, a frame 13 and a running system, the car body 12 is placed above the frame 13, and the running system adopts a closed static pressure running system, so The closed static pressure running system includes a proportional control variable pump 1, a hydraulic motor 6, a hydraulic oil tank 10, an oil suction filter 9, an oil charge pump 8, a flushing valve 5, a hydraulic oil radiator 4 and a fine filter 7, and the oil charge pump The inlet port of 8 communicates with the outlet port of the hydraulic oil tank 10 through the oil suction filter 9 to make up the leakage of the circuit and forcibly cools the hydraulic system. One of the outlet ports is connected to the inlet port of the proportional control valve I2 integrated on the proportional control variable pump 1, and the second outlet ...
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The invention provides a railway track operating vehicle with a closed static-pressure travelling system. An oil refilling pump inlet end of the closed static-pressure travelling system is communicated with a hydraulic oil tank outlet end through an oil-absorption filter, an oil refilling pump outlet end is communicated with an inlet end of a fine filter with two outlet ends, one of the outlet ends of the fine filter is communicated with an inlet end of a proportional-control valve I integrated on a proportional-control variable pump, and the other outlet end of the fine filter is communicated with an inlet end of a high-pressure oil-refilling overflow valve, and an outlet end of the proportional-control variable pump is communicated with an inlet end of a hydraulic motor. An outlet end of the proportional-control valve I is communicated with a displacement control mechanism capable of controlling displacement and rotation direction of the proportional-control variable pump, hydraulic oil discharged from the proportional variable pump enters a hydraulic motor to control rotation speed and direction thereof, power of an outlet end of the hydraulic motor is transmitted to a vehicle travelling portion to control travelling speed and direction of the operating vehicle through an axle gearbox, a flushing valve is integrated on the hydraulic motor and is communicated with an inlet end of a hydraulic oil radiator, and an outlet end of the hydraulic oil radiator is communicated with an inlet end of a hydraulic oil tank.
Description
technical field [0001] The invention belongs to the technical field of railway track operating vehicles, and in particular relates to a railway track operating vehicle with a closed static pressure running system. Background technique [0002] At present, the operation of the track work vehicles on the railway is mostly mechanical transmission or hydraulic transmission, and the static pressure running also mostly adopts the open hydrostatic transmission method. Mechanical transmission or hydraulic transmission can easily realize the high-power and high-speed operation of the rail vehicle, but it is difficult to guarantee its low-speed stability. The hydraulic system of the open static pressure system is exposed to the outside. Not only is the efficiency low, but also the transmission route is complicated. It is difficult to arrange in the limited layout space of the frame. OK, so improvements are necessary. Contents of the invention [0003] The technical problem solved ...
Claims
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Login to View More IPC IPC(8): F15B11/02F15B11/04F15B11/08
Inventor 李艳妮王新虎惠莉花赵力
Owner BAOJI CSR TIMES ENG MACHINERY