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Double-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve

A technology of hydraulic cylinders and digital valves, which is applied in the direction of mechanical equipment, liquid shock absorbers, springs, etc., can solve the problems of high cost and restrictions, and achieve the effects of high accuracy, low cost, and fast execution response

Active Publication Date: 2016-06-22
潍坊威度电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The typical foreign tractor suspension hydraulic system is based on the hydraulic system of the electronically controlled proportional valve, but the cost is relatively high, which limits the application to a certain extent

Method used

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  • Double-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve
  • Double-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve
  • Double-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Such as Figure 1 to Figure 4 Commonly shown, a double-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valves, mainly consists of oil pump 1, double-acting hydraulic cylinder 2, two normally closed electromagnetic digital valves, three normally open electromagnetic digital valves, hydraulic Controlled two-position three-way valve 3, one-way valve 9 and oil tank T, oil pump outlet P of oil pump 1 is connected to oil inlet c of hydraulically controlled two-position three-way valve 3, rodless chamber A of double-acting hydraulic cylinder 2 is connected to fluid The normal port d of the control two-position three-way valve 3, a check valve 9 is provided between the rodless chamber A and the normal port d, and the normal port e of the hydraulic control two-position three-way valve 3 is connected to the do...

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PUM

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Abstract

The invention discloses a double-acting hydraulic oil cylinder tractor suspension hydraulic system based on an electromagnetic digital valve. The normally open port of the through valve, a one-way valve is set between the rodless chamber and the normally open port, the normally open port of the hydraulically controlled two-position three-way valve is connected to the rod chamber of the double-acting hydraulic cylinder, and the rod chamber passes through the second normally closed The type electromagnetic digital valve is connected to the oil tank, and the rodless cavity is connected to the oil tank through the first normally closed electromagnetic digital valve. , the hydraulic control branch includes a second normally open electromagnetic digital valve and a third normally open electromagnetic digital valve connected in series, and the hydraulic control port of the two-position three-way valve is connected to the second normally open electromagnetic digital valve and the third normally open electromagnetic digital valve. Between the three normally open electromagnetic digital valves. The tractor is suspended from a hydraulic system, and the invention realizes the rising, falling, floating and neutral functions of the hydraulic servo.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a double-acting hydraulic oil cylinder tractor suspension hydraulic system based on an electromagnetic digital valve. Background technique [0002] At present, the domestic tractor suspension system generally controls the hydraulic distributor or lifter through a purely mechanical actuator to control the hydraulic direction to achieve functional states such as rising, falling, and neutral. There are problems such as lagging execution response, poor accuracy, cumbersome adjustment and calibration, and inconvenient use. shortcoming. The use of electronic control technology to realize the automation and intelligence of the tractor suspension system is an urgent need of the industry. The typical foreign tractor suspension hydraulic system is based on the hydraulic system of electronically controlled proportional valve, but the cost is relatively high, which limits the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/16F16F9/34F16F9/46
Inventor 孙军王秀强孙勇
Owner 潍坊威度电子科技有限公司
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