Air-control hydraulic device used for railway self-discharging vehicle
A dump truck, pneumatic hydraulic technology, applied in the fields of hydraulic and pneumatic control, can solve the problem that railway dump trucks are difficult to meet application requirements, and achieve the effects of being conducive to stability, improving safety and reliability, and reducing the weight of vehicles
Active Publication Date: 2015-04-22
CRRC YANGTZE CO LTD
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Problems solved by technology
Due to the limitation of vehicle space and weight, it is difficult to meet the application requirements in large-tonnage railway dump vehicles
Method used
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Embodiment Construction
[0018] The present invention adopts the pneumatic hydraulic pump 5 to control the hydraulic oil cylinders 18, 27, the oil inlet and the oil return port of the air hydraulic pump 5 are connected with the three-position four-way air-liquid on the one-position side and the two-position side hydraulic cylinders 18, 27 respectively. The oil outlet A of the valves 15 and 30 is connected to the oil return port B; the control part is connected to the three-position five-way air control valves 9 and 10 on the first and second positions in turn by operating the manual double valve group 13 and 14 on the first and second positions. One, two-position side unlock cylinders 21, 25, one-, two-position side machine-controlled valves 23, 26, shuttle valves 7, 8, two-position, two-way air control valve 4 provide compressed air to the pneumatic hydraulic pump 5, and the pneumatic hydraulic pump 5 works , promote one or two rollover hydraulic cylinders 18,27 lifting actions, and complete the rollo...
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The invention discloses an air-control hydraulic device used for a railway self-discharging vehicle. The air-control hydraulic device used for the railway self-discharging vehicle comprises a power portion, a control portion and a connecting pipeline and is characterized in that the power portion utilizes an air-control hydraulic pump to transform kinetic energy of compressed air into pressure energy of hydraulic oil to supply kinetic energy for a hydraulic oil cylinder. The air-control hydraulic device used for the railway self-discharging vehicle aims at a railway self-discharging vehicle loading system, successively transforms air kinetic energy into hydraulic pressure, enables the hydraulic oil cylinder to be applied, achieves stepless adjustment of coach tip-over and loading speed, is in favor of stability of loading and relieves kerb weight. The air-control hydraulic device used for the railway self-discharging vehicle solves the problems that the cylinder is high in weight, big in size, big in snap action and poor in stability, utilizes interlocking air-control technology and improves loading safety and reliability of the railway self-discharging vehicle.
Description
technical field [0001] The invention relates to the technical fields of air control and hydraulic pressure, in particular to an air control hydraulic device for railway dump vehicles. Background technique [0002] Tilting devices for railway dump vehicles usually use cylinders or hydraulic cylinders to tip the carriages to a certain side according to the requirements of the working conditions to achieve the purpose of unloading. [0003] The tipping device for railway dump vehicles is mainly realized through the action process of the air control device to control the extension of the hydraulic cylinder that comes with the vehicle to drive the dump truck's compartment to gradually tip over to either side for unloading, and then control the retraction of the hydraulic cylinder to drive The compartment gradually falls back to the unoverturned state. [0004] Compared with the hydraulic cylinder, there are two unfavorable factors. One is that under the same thrust, the volume o...
Claims
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IPC IPC(8): B61D9/00
Inventor 施振昌石峰祝安石王宝磊
Owner CRRC YANGTZE CO LTD