Hydraulic control system for clamping mechanism of car dumper
A technology of hydraulic control system and tipper, applied in the directions of transportation and packaging, loading/unloading, etc., can solve the problems of high compensation pressure, insufficient pressure, unable to switch pressure, etc. Effect
Inactive Publication Date: 2012-11-07
DALIAN HUARUI HEAVY IND GRP CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the pressure in the hydraulic control circuit of the press mechanism of the existing dumper cannot be switched, the pressure is insufficient when the press beam is lifted, and the ratio of the cylinder bore to the piston rod diameter is limited and the compensation pressure is too high when the differential circuit is used. Defects, provide a new hydraulic control system for the press mechanism of the dumper
Method used
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[0019] Such as Figure 1 ~ Figure 3 The shown hydraulic control system of a press mechanism of a dumper includes a one-way valve, a pressure measuring joint, a pressure relay, a press beam 25 , a press cylinder 27 and a press valve group 26 . The earrings of the oil cylinder body are fixed on the car body bracket, and the earrings of the piston rod are connected to the pressing beam. The pressing beam moves up and down in a specific slideway through the expansion and contraction of the oil cylinder to realize pressing and loosening. Press car oil cylinder comprises cylinder body 28, piston 29, piston rod 30, piston ring 31 etc., and piston rod 30 is connected with piston 29 by thread, and piston ring 31 and piston 29 are packed into cylinder body 28 from front and rear ends of cylinder body respectively, and piston The ring 31 is sleeved on the piston rod 30 . The oil cylinder is divided into three parts by the piston 29 and the piston ring 31. The oil chamber III34 is betwee...
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The invention discloses a hydraulic control system for a clamping mechanism of a car dumper. The system comprises a clamping oil cylinder, wherein the clamping oil cylinder is provided with a piston rod; a piston ring is sleeved on the piston rod; a displacement sensor is arranged at the tail end of the piston rod, and the tail end of the piston rod is externally in threaded connection with a piston; the oil cylinder is separated into a 2C cavity, a 2A cavity and a 2B cavity by the piston ring and the piston; and an integration block is arranged in a clamping valve assembly, a 2C port and a 2A port thereon are directly communicated with the 2C cavity and the 2A cavity of the cylinder, and a 2B port is communicated with the 2B cavity of the oil cylinder through an oil pipe. The system is characterized in that the clamping valve assembly comprises pilot control valves I and II, control cover plates I, II, III and V, a two-way reducing valve, an electromagnetic directional valve and two-way cartridge valves I, II, III and IV, wherein a hydraulic element is arranged on the lateral side of the integration block, and is communicated with the integration block through a bore channel; pressure release is completed through the oil cylinder 2C cavity, the two-way cartridge valve IV and the control cover plate IV; and the conversion of oil cylinder working pressure is completed through the pilot control valve I, the control cover plate I and the two-way cartridge reducing valves.
Description
technical field [0001] The invention relates to a dumper pressing car hydraulic device used for loading and unloading bulk materials on railway gondola cars, and belongs to the field of bulk material loading and unloading mechanical equipment. Background technique [0002] In the hydraulic system of the dumper of bulk material handling equipment, the hydraulic control system of the press mechanism is a relatively complicated system. In order to reduce the damage to the vehicle, the force acting on the vehicle body by the pressing mechanism must be kept within a certain range, neither too large nor too small, a large force will damage the vehicle; a small force will cause the dumper to overturn The vehicle derailed during the process. [0003] In the past, the commonly used hydraulic system of the dumper press mechanism produced relatively high pressure in the oil cylinder during the unloading process, so the design requirements for the oil cylinder were high, and the loss o...
Claims
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IPC IPC(8): B65G67/48
Inventor 邓劭华王斌李丽
Owner DALIAN HUARUI HEAVY IND GRP CO LTD