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Control valve for electro-hydraulic suspension systems of small-and medium-horsepower tractors

A suspension system and control valve body technology, which is applied in fluid pressure actuation system testing, agricultural machinery, agricultural machinery lifting devices, etc., can solve problems such as lack of application, achieve compact structure, fast response speed, improve work reliability and The effect of controlling flexibility

Pending Publication Date: 2018-01-30
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the achievements are still in the stage of theoretical research and lack of practical application.

Method used

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  • Control valve for electro-hydraulic suspension systems of small-and medium-horsepower tractors
  • Control valve for electro-hydraulic suspension systems of small-and medium-horsepower tractors
  • Control valve for electro-hydraulic suspension systems of small-and medium-horsepower tractors

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present invention, not to limit the present invention.

[0028] A control valve body used for the electro-hydraulic suspension system of small and medium horsepower tractors, such as figure 1 As shown, it includes valve body 1 and overflow valve 2 inserted on valve body 1, check valve 3, two-position two-way electromagnetic reversing valve 4, two-position three-way electromagnetic reversing valve 5, oil outlet A6 , oil inlet P7, oil return port T8 and pressure measuring oil port 9, relief valve 2, check valve 3, two-position two-way electromagnetic directional valve 4, two-position three-way electromagnetic directional valve 5 are all threaded Valve installation, zero leakage, light weight, high integration, relatively easy processing and modification, c...

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Abstract

The invention belongs to the field of electro-hydraulic suspension systems and discloses a control valve for electro-hydraulic suspension systems of small-and medium-horsepower tractors. The control valve comprises a valve body, an overflow valve, a check valve, a two-position two-way electromagnetic valve, a two-position three-way electromagnetic valve, an oil outlet A, an oil inlet P, an oil return port T and a pressure testing oil port, and the overflow valve, the check valve, the two-position two-way electromagnetic valve, the two-position three-way electromagnetic valve, the oil outlet A,the oil inlet P, the oil return port T and the pressure testing oil port are mounted on the valve body through insertion. The valve body is internally provided with oil passages communicated with valve part oil ways, the oil inlet port P is connected with an oil cylinder, the pressure testing oil port is connected with a pressure meter and a switch, the oil outlet A is connected with a hydrauliccylinder, and the oil return port T is connected with an oil tank. The control valve has advantages of cost saving, compact structure, high response speed, convenience in connection with external oilways and hydraulic cylinders and convenience in electronic control.

Description

technical field [0001] The invention relates to the field of tractor electro-hydraulic suspension systems, in particular to a control valve body used in the electro-hydraulic suspension system of small and medium horsepower tractors. Background technique [0002] my country is a large agricultural country with a large number of farmers, a large area of ​​arable land and a high multiple cropping index, so there is a large demand for small and medium horsepower tractors. With the development of technologies such as computers and electronic control, agricultural mechanization has become an inevitable trend. As an important product of agricultural machinery, tractors must also follow this trend. [0003] At present, the electromechanical-hydraulic integrated control technology is gradually being applied to the tractor's control system, becoming an important way to realize the intelligence of the tractor. As an important part of the tractor, the suspension system is gradually c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B19/00A01B63/10
Inventor 高强薛金林鲁植雄
Owner NANJING AGRICULTURAL UNIVERSITY
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