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

A hydraulic cylinder and hydraulic system technology, which is applied in the field of single-acting hydraulic cylinder tractor suspension hydraulic system, can solve the problems of high cost and limitations, and achieve the effects of high precision, low cost and fast execution response

Active Publication Date: 2017-03-29
潍坊威度电子科技有限公司
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  • Abstract
  • Description
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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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  • Single-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve

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Embodiment 1

[0012] Such as figure 1 As shown, a single-acting hydraulic cylinder tractor suspension hydraulic system based on electromagnetic digital valve, the system is mainly composed of oil pump 1, single-acting hydraulic cylinder 2, normally closed electromagnetic digital valve 3, one-way valve 4, normally open electromagnetic digital Composed of valve 5 and oil tank T, a check valve 4 is provided on the oil inlet line 8 between the single-acting hydraulic cylinder 2 and the oil pump 1; the working oil port A of the single-acting hydraulic cylinder 2 passes through the normally closed electromagnetic digital valve 3 It is connected to the oil tank T, and a normally open electromagnetic digital valve 5 is also provided between the oil pump 1 and the oil tank T. A relief valve 6 is connected in parallel on the oil return line 9 between the single-acting hydraulic cylinder 2 and the oil tank T, which can maintain a constant pressure at the inlet of the hydraulic oil; in order to ensure ...

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Abstract

The invention discloses a single-action hydraulic oil cylinder tractor suspension hydraulic system based on an electromagnetic digital valve. The single-action hydraulic oil cylinder tractor suspension hydraulic system is mainly composed of an oil pump, a single-action hydraulic oil cylinder, a normally closed type electromagnetic digital valve, a check valve, a normally opened type electromagnetic digital valve and an oil tank. The check valve is arranged on an oil inlet oil-way between the single-action hydraulic oil cylinder and the oil pump. A working port of the single-action hydraulic oil cylinder is connected with the oil tank through the normally closed type electromagnetic digital valve. The normally opened type electromagnetic digital valve is arranged between the oil pump and the oil tank. The tractor suspension hydraulic system has the advantages of being fast in executing and response, high in accuracy and capable of greatly reducing cost, and achieves the functions of rising, dropping, floating and neutrality of a hydraulic servo.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a single-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): F15B13/044
Inventor 王秀强孙军
Owner 潍坊威度电子科技有限公司
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