An agricultural machinery control valve

Abstract

The invention provides an agriculture machine control valve, and belongs to the technical field of hydraulics. The agriculture machine control valve solves the problem that the rising and falling movement of an existing agricultural machine execution mechanism and the steering movement of an agricultural machine are not convenient to control. The agriculture machine control valve comprises a valve body and a steering control valve cavity located in the valve body. A steering valve rod is arranged in the steering control valve cavity and slides along the steering control valve cavity so that a steering oil inlet can be selectively communicated with a left steering oil opening, a right steering oil opening and a steering oil return opening. The control valve further comprises a three-position four-way M type electromagnetic valve. An oil inlet and an oil outlet are formed in the valve body. An electromagnetic valve port A and an electromagnetic valve port B of the three-position four-way M type electromagnetic valve are connected with an execution mechanism to drive the execution mechanism to rise and fall. An electromagnetic valve port P of the three-position four-way M type electromagnetic valve is communicated with the oil inlet. An electromagnetic valve port T of the three-position four-way M type electromagnetic valve is connected with the steering oil inlet. A first oil inlet passageway and a second oil inlet passageway are connected through a throttling passageway. The steering control valve cavity is connected with an oil return opening through oil return passageways. By means of the agriculture machine control valve, the work efficiency of the agricultural machine under a complex geomorphological environment is improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure and relates to an agricultural machinery control valve. Background technique [0002] Agricultural machinery refers to various machinery used in crop planting and animal husbandry production, as well as in the primary processing and handling of agricultural and animal products. The agricultural machinery used in the crop planting industry can be divided into farming machinery, planting machinery and harvesting machinery according to their functions. The most typical of the farming machinery is the rotary tiller, and the most typical of the harvesting machinery is the combine harvester. [0003] With the development of industry, the degree of automation of agricultural machinery such as rotary tillers and combine harvesters in developed countries has reached a relatively high level, greatly improving agricultural productivity. Compared with developed countries in Europe and the United S...

AI Technical Summary

Problems solved by technology

The existing agricultural machinery control methods mainly control the lifting action of the actuator and the steering action of the agricultural machinery through complex linkages, and the labor intensity of the operator is relatively high.

Moreover, this control method cannot realize two kinds of actions at the same time, and cannot well adapt to the land environment of our country, and the work efficiency is greatly reduced.

With the development of hydraulic control technology, there is also the use of hydraulic system to independently control the lifting action of the actuator and the steering action of agricultural machinery. However, this control method is still relatively complicated, and through manual operation, the continuity of the two actions is difficult to guarantee.

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