Hydraulic pump valve integrated system of engineering machine

A technology for construction machinery and hydraulic pumps, used in mechanical equipment, rotary piston machinery, pumps, etc., can solve the problems of high process and installation, many connection points, and scattered structures, so as to reduce production costs, reduce quality, and reduce work. effect of stress

Inactive Publication Date: 2017-01-04
新昌县羽林街道君博机械厂
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  • 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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  • Hydraulic pump valve integrated system of engineering machine
  • Hydraulic pump valve integrated system of engineering machine

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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 overall hydraulic pump and valve system for construction machinery shown includes a pump valve rear body 21 integrally casted with 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 th...

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PUM

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Abstract

The invention discloses a hydraulic pump valve integrated system of an engineering machine. The hydraulic pump valve integrated system of the engineering machine comprises a pump valve rear body which is integrally formed through casting and provided with a gear pump and a reversing valve body. A cylinder body is connected to the reversing valve body of the pump valve rear body, and a mandrel slidably penetrates through the interior of the reversing valve body and the interior of the cylinder body. The portion, adjacent to the pump valve rear body, of the cylinder body is in dynamic seal with the mandrel. An oil inlet / return port is formed in the pump valve rear body. The oil inlet / return port communicates with the reversing valve body through an oil return channel and also communicates with the reversing valve body through an internal oil inlet channel via the gear pump, the two channels and an oil outlet which is formed in the pump valve rear body communicate with different cavities in the reversing valve body correspondingly, and oil inlet / outlet / return circuits of the whole system are formed by combining the different cavities and the mandrel in position. An overflow valve is arranged on the internal oil inlet channel in a communicating mode. According to the hydraulic pump valve integrated system of the engineering machine, hydraulic elements and control circuits are optimized, the oil supply efficiency is improved, the system pressure is decreased, 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 construction machinery, which optimizes hydraulic components and control circuits, saves material costs, reduces fuel consumption and press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/18F04C15/06F04C15/00
CPCF04C2/18F04C15/00F04C15/06F04C15/064F04C15/066
Inventor 蒋文炯
Owner 新昌县羽林街道君博机械厂
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