Hydraulic system for corn harvester based on mechanical control valve

Abstract

The utility model discloses a hydraulic system for a corn harvester based on a mechanical control valve, which comprises a three-position six-way control valve, the three-position six-way control valve comprises a first inlet, a second inlet, a third inlet, a first outlet, a second outlet and a third outlet, and the three-position six-way control valve comprises a first station, a second station and a third station. In the first station, the first inlet is connected with the second outlet, the second inlet and the third inlet are connected with the third outlet, and the first outlet is closed; in the second station, the first inlet is connected with the first outlet, the second inlet is connected with the second outlet, and the third inlet is connected with the third outlet; and in the third station, the first inlet and the third inlet are connected with the third outlet, the second inlet and the second outlet are connected, and the first outlet is closed.

Description

Technical Field

[0001] The utility model relates to a hydraulic system for a corn harvester based on a mechanical control valve. Background Art

[0002] Corn harvester is an agricultural machine that harvests corn stalks when the corn is ripe or close to ripe according to agronomic requirements. It is a new type of agricultural machinery developed for the development of new energy and to reduce the labor intensity of farmers. It is a low-priced agricultural machinery suitable for the popularization of small four-wheeled vehicles in rural areas and can harvest corn stalks. It shortens the labor cycle of farmers and frees them from heavy physical labor.

[0003] Corn harvesters generally use hydraulic systems as the control system of the working mechanism. Therefore, different hydraulic systems need to be designed for different agricultural machinery. This patent aims to provide a different hydraulic system to meet some of the functions of the harvester. Utility Model Content

[0004] The purpose of the utility model is to solve the above deficiencies in the prior art and to provide a hydraulic system for a corn harvester based on a mechanical control valve.

[0005] A hydraulic system for a corn harvester based on a mechanical control valve comprises a three-position six-way control valve, the three-position six-way control valve comprises a first inlet, a second inlet, a third inlet, a first outlet, a second outlet, and a third outlet, the three-position six-way control valve comprises a first station, a second station, and a third station, the first station: the first inlet is connected to the second outlet, the second inlet and the third inlet are connected to the third outlet, and the first outlet is closed; the second station: the first inlet is connected to the first outlet, the second inlet and the second outlet are connected, and the third inlet is connected to the third outlet; the third station: the first inlet, the third inlet are connected to the third outlet, the second inlet and the second outlet are connected, and the first outlet is closed;

[0006] The first inlet is connected to the hydraulic source through the first oil circuit, the second inlet is connected to the oil tank through the second oil circuit, the third inlet is connected to the external control switch through the third oil circuit, the external control switch is used to control the hydraulic system to be turned on or off, the first outlet is connected to the oil tank through the fourth oil circuit, the second outlet is connected to an oil port of the hydraulic working element through the fifth oil circuit, and the third outlet is connected to another oil port of the hydraulic working element through the sixth oil circuit.

[0007] Preferably, the hydraulic working element is a hydraulic motor.

[0008] Preferably, the three-position six-way control valve is a mechanical reversing valve.

[0009] Beneficial effects: Compared with the prior art, the utility model controls the on-off and flow direction of the hydraulic oil circuit through a specific three-position six-way mechanical reversing valve to meet some functions of the corn harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a hydraulic system for a corn harvester based on a mechanical control valve;

[0011] In the figure, 1, the first oil circuit, 2, the second oil circuit, 3, the third oil circuit, 4, the fourth oil circuit, 5, the fifth oil circuit, 6, the sixth oil circuit, 7, the three-position six-way control valve, 8, the hydraulic motor. DETAILED DESCRIPTION

[0012] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0013] like Figure 1 As shown, a first oil circuit 1, a second oil circuit 2, a third oil circuit 3, a fourth oil circuit 4, a fifth oil circuit 5, a sixth oil circuit 6, a three-position six-way control valve 7, and a hydraulic motor 8;

[0014] A hydraulic system for a corn harvester based on a mechanical control valve comprises a three-position six-way control valve 7, the three-position six-way control valve 7 comprises a first inlet, a second inlet, a third inlet, a first outlet, a second outlet, and a third outlet, the three-position six-way control valve 7 comprises a first station, a second station, and a third station, the first station: the first inlet is connected to the second outlet, the second inlet and the third inlet are connected to the third outlet, and the first outlet is closed; the second station: the first inlet is connected to the first outlet, the second inlet is connected to the second outlet, and the third inlet is connected to the third outlet; the third station: the first inlet, the third inlet are connected to the third outlet, the second inlet and the second outlet are connected, and the first outlet is closed;

[0015] The first inlet is connected to the hydraulic source (at P in the figure) through the first oil circuit 1, the second inlet is connected to the oil tank (at T in the figure) through the second oil circuit 2, the third inlet is connected to the external control switch (at X in the figure) through the third oil circuit 3, and the external control switch is used to control the hydraulic system to be turned on or off. The first outlet is connected to the oil tank through the fourth oil circuit 4, the second outlet is connected to an oil port of the hydraulic working element through the fifth oil circuit 5, and the third outlet is connected to another oil port of the hydraulic working element through the sixth oil circuit 6.

[0016] In this embodiment, the hydraulic working element is a hydraulic motor 8 .

[0017] In this embodiment, the three-position six-way control valve 7 is a mechanical reversing valve.

[0018] When the three-position six-way control valve 7 is in the first position, the first oil circuit 1 is connected to the fifth oil circuit 5, and the second oil circuit 2, the third oil circuit 3 and the sixth oil circuit 6 are connected;

[0019] When the three-position six-way control valve 7 is in the second position, the first oil circuit 1 is the same as the fourth oil circuit 4, the second oil circuit 2 is connected to the fifth oil circuit 5, and the third oil circuit 3 is connected to the sixth oil circuit 6;

[0020] When the three-position six-way control valve 7 is in the third position, the first oil circuit 1 , the third oil circuit 3 and the sixth oil circuit 6 are connected, and the second oil circuit 2 and the fifth oil circuit 5 are connected.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system for a corn harvester based on a mechanical control valve, characterized in that: The invention comprises a three-position six-way control valve, wherein the three-position six-way control valve comprises a first inlet, a second inlet, a third inlet, a first outlet, a second outlet and a third outlet, and the three-position six-way control valve comprises a first station, a second station and a third station, wherein the first station: the first inlet is connected to the second outlet, the second inlet and the third inlet are connected to the third outlet, and the first outlet is closed; the second station: the first inlet is connected to the first outlet, the second inlet is connected to the second outlet, and the third inlet is connected to the third outlet; the third station: the first inlet, the third inlet and the third outlet are connected, the second inlet and the second outlet are connected, and the first outlet is closed; The first inlet is connected to the hydraulic source through the first oil circuit, the second inlet is connected to the oil tank through the second oil circuit, the third inlet is connected to the external control switch through the third oil circuit, and the external control switch is used to control the hydraulic system to be turned on or off, the first outlet is connected to the oil tank through the fourth oil circuit, the second outlet is connected to an oil port of the hydraulic working element through the fifth oil circuit, and the third outlet is connected to another oil port of the hydraulic working element through the sixth oil circuit.

2. A hydraulic system for a corn harvester based on a mechanical control valve according to claim 1, characterized in that: The hydraulic working element is a hydraulic motor.

3. A hydraulic system for a corn harvester based on a mechanical control valve according to claim 1, characterized in that: The three-position six-way control valve is a mechanical reversing valve.

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