Engineering vehicle hydraulic pump valve overall system

A technology for engineering vehicles and hydraulic pumps, which is applied to fluid pressure actuators, servo motor components, mechanical equipment, etc. It can solve the problems of high process and installation, scattered structures, and many leak-proof points, so as to reduce production costs and Effect of working pressure and prolonging service life

Active Publication Date: 2017-03-29
CHONGQING HANGYU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are scattered structure, low efficiency, large pressure difference, many connection points, many leak-proof points, high and complicated process and installation

Method used

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  • Engineering vehicle hydraulic pump valve overall system
  • Engineering vehicle hydraulic pump valve overall system

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0019] a kind of like figure 1 The engineering vehicle hydraulic pump valve overall system shown includes a pump valve rear body 21 which is integrally cast and has a gear pump and a reversing valve body. The reversing valve body of the pump valve rear body 21 is connected with The cylinder block 8 has a mandrel 14 that can slide through the inside of the two, and is arranged in a dynamic seal with the mandrel 14 near the position adjacent to the cylinder body 8 and the rear body 21 of the pump valve; The oil inlet and outlet 19 is provided on the body 21, and the oil inlet and outlet 19 are connected to the reversing valve body through the oil return passage 18, and the oil inlet and outlet 19 are connected to the reversing valve body through the built-in oil inlet passage 11 through the gear pump at the same time. The valve body of the...

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PUM

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Abstract

The invention discloses an engineering vehicle hydraulic pump valve integrated system. The engineering vehicle hydraulic pump valve integrated system comprises a pump valve rear body which is formed in an integral-cast mode and is provided with a gear pump and a reversing valve body, the reversing valve body of the pump valve rear body is connected with an air cylinder body and is provided with a central spindle which can penetrate through the interior of the reversing valve body and the interior of the air cylinder body in a sliding mode, and the reversing valve body and the central spindle are arranged in a dynamic seal mode nearby the adjacent position of the air cylinder body and the pump valve rear body; oil inlet and oil returning openings are formed in the pump valve rear body, the oil inlet and oil returning openings are communicated to the reversing valve body through an oil returning channel, the oil inlet and oil returning openings simultaneously pass through the gear pump and are communicated to the reversing valve body through an internally-arranged oil inlet channel, the two channels and oil outlets formed in the pump valve rear body are respectively communicated to different cavities in the reversing valve body, the different cavities are combined with the position of the central spindle to form an inlet and outlet oil returning way of the integrated system, and an overflow valve is arranged on the internally-arranged oil inlet channel in a communicated mode. A hydraulic element and a control circuit are optimized, the oil supply efficiency is improved, the system pressure is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to an air-controlled reversing valve, which is mainly used for dump trucks, cranes, sanitation vehicles, tractors, engineering vehicles and engineering machinery thereof. Background technique [0002] Traditional engineering vehicle hydraulic and control systems are composed of hydraulic cylinders, gear pumps, relief valves, reversing valves, check valves, fuel tanks, oil supply pipelines, oil return pipelines and power connectors. The main disadvantages are scattered structure, low efficiency, large pressure difference, many connection points, many leak-proof points, high and complicated process and installation. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention aims to provide an overall hydraulic pump and valve system for engineering vehicles, which optimizes hydraulic components and control circuits, saves material costs, reduces fuel consumption and pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/04
Inventor 徐援朝黄章跃
Owner CHONGQING HANGYU IND
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