Simple four-wheel-drive conversion following valve group

Abstract

The utility model relates to the field of change-over valve banks, in particular to a simple four-wheel drive change-over following valve bank which comprises a valve body. The hydraulic control valve further comprises a pressure assembly, a main oil inlet, an auxiliary oil inlet, a first oil outlet and a second oil outlet, the main oil inlet is formed in the left position of the surface of the front side of the valve body, the auxiliary oil inlet is formed in the right position of the surface of the front side of the valve body, and the first oil outlet is formed in the right position of the surface of the rear side of the valve body. A second oil outlet is formed in the right position of the surface of the rear side of the valve body, and the first oil outlet and the second oil outlet are connected with oil ports in the same side of two hydraulic motors of the rear wheel; by arranging the main oil inlet, when the pressure assembly is opened, system high-pressure oil can enter from the main oil inlet and flow out from the first oil outlet and the second oil outlet to supply oil to a rear wheel hydraulic motor, so that rear wheels are driven by the hydraulic motor to walk, the front wheel driving rotating speed is reduced, and meanwhile the four-wheel driving walking effect is achieved; the walking force of mechanical equipment is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of conversion valve group especially simple four drive conversion follow valve group. BACKGROUND

[0002] Simple four drive conversion follow valve group, with hydraulic motor as walking agricultural machinery field application is very extensive, such as cotton picking machine in agricultural industry, green storage machinery and other agricultural industry mechanical equipment, in the walking system field in this agricultural machinery and equipment, usually adopt front wheel drive walking in the farmland picking or harvesting.

[0003] The existing agricultural machinery and equipment in the walking system field, usually adopt front wheel drive walking in the farmland picking or harvesting, if these machines in the farmland picking or harvesting, walking in the presence of excessive resistance, make the front wheel in rotation or skid cannot walk.

[0004] Therefore, aiming at the above-mentioned existing agricultural machinery and equipment in the walking system field, usually adopt front wheel drive walking in the farmland picking or harvesting, if these machines in the farmland picking or harvesting, walking in the presence of excessive resistance, make the front wheel in rotation or skid cannot walk problem, can design simple four drive conversion follow valve group, through setting up main oil inlet, when pressure assembly opens, system high pressure oil can enter from main oil inlet, and flow from first oil outlet and second oil outlet, oil supply for rear wheel hydraulic motor, make rear wheel by hydraulic motor drive walking, reduce front wheel drive rotating speed, reach four wheel drive walking effect simultaneously, increase mechanical equipment walking force. INNOVATION CONTENT

[0005] In order to overcome the existing agricultural machinery and equipment in the walking system field, usually adopt front wheel drive walking in the farmland picking or harvesting, if these machines in the farmland picking or harvesting, walking in the presence of excessive resistance, make the front wheel in rotation or skid cannot walk problem.

[0006] The technical scheme of the utility model is: simple four drive conversion follow valve group, including valve body, still including pressure assembly, main oil inlet, auxiliary oil inlet, first oil outlet and second oil outlet, the left position of the front side surface of valve body is equipped with main oil inlet, the right position of the front side surface of valve body is equipped with auxiliary oil inlet, the right side position of the rear side surface of valve body is equipped with first oil outlet, the right position of the rear side surface of valve body is equipped with second oil outlet, first oil outlet and second oil outlet are connected with the same side oil port of rear wheel two hydraulic motors, the left and right side surfaces of valve body are embedded with pressure assembly in the position corresponding to main oil inlet and auxiliary oil inlet.

[0007] Preferably, by setting a main oil inlet, when the pressure component is opened, the system's high-pressure oil can enter from the main oil inlet and flow out from the first and second oil outlets, supplying oil to the rear wheel hydraulic motor, so that the rear wheel is driven by the hydraulic motor, reducing the front wheel drive speed, and achieving a four-wheel drive effect, increasing the walking force of the mechanical equipment. This solves the problem that in the field of existing agricultural machinery, the walking system usually uses front-wheel drive for walking in the field for harvesting or picking, and if these machines encounter too much driving resistance during walking, the front wheels will rotate or slip and be unable to walk.

[0008] Preferably, the pressure assembly includes a hydraulic cylinder, a spring, and a sliding valve core; hydraulic cylinders are embedded in the left and right surfaces of the valve body at positions corresponding to the main oil inlet and the auxiliary oil inlet, and springs are connected to one end of each hydraulic cylinder inserted into the valve body, with a sliding valve core provided at the end of each spring away from the corresponding hydraulic cylinder.

[0009] Preferably, the pressure assembly also includes a limit rod; one end of the symmetrical limit rod is provided on the side surface of the cylinder near the corresponding spring, and the other end of the limit rod is slidably connected to the sliding valve core.

[0010] Preferably, a first auxiliary oil outlet is provided on the rear surface of the valve body at the left side of the first oil outlet, and a second auxiliary oil outlet is provided on the rear surface of the valve body at the right side of the second oil outlet. The first and second auxiliary oil outlets are connected to the oil outlets on the other side of the two hydraulic motors of the rear wheel.

[0011] Preferably, connectors are provided at the port positions of the main oil inlet, auxiliary oil inlet, first oil outlet, second oil outlet, first auxiliary oil outlet, and second auxiliary oil outlet, and nuts are provided on the outer surface of the connectors.

[0012] Preferably, a solenoid valve is installed on the rear part of the right side surface of the valve body.

[0013] Preferably, a controller is provided on the upper surface of the solenoid valve, and the controller is electrically connected to the speed sensor of the front wheel travel hydraulic motor.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting a main oil inlet, when the pressure component is opened, the system's high-pressure oil can enter from the main oil inlet and flow out from the first and second oil outlets, supplying oil to the rear wheel hydraulic motor. This allows the rear wheels to be driven by the hydraulic motor, reducing the front wheel drive speed and achieving a four-wheel drive effect. This increases the walking force of the machinery, thus solving the problem that existing agricultural machinery typically uses front-wheel drive for walking in fields for harvesting or picking. If these machines encounter excessive driving resistance during harvesting or picking, the front wheels may rotate or slip and become unable to move.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A simple four-wheel drive conversion follow-up valve group is shown in the three-dimensional structure schematic diagram.

[0017] Figure 2 A simple four-wheel drive conversion follow-up valve group is shown in the three-dimensional structure schematic diagram.

[0018] Figure 3 A simple four-wheel drive conversion follow-up valve group is shown in the three-dimensional structure schematic diagram.

[0019] Figure 4 A simple four-wheel drive conversion follow-up valve group is shown in the three-dimensional structure schematic diagram.

[0020] The drawings are explained as follows: 1, valve body; 21, oil cylinder; 22, spring; 23, sliding valve core; 24, limiting rod; 3, main oil inlet; 4, auxiliary oil inlet; 5, first oil outlet; 6, second oil outlet; 7, first auxiliary oil outlet; 8, second auxiliary oil outlet; 9, connector; 10, nut; 11, electromagnetic valve; 12, controller. DETAILED DESCRIPTION

[0021] The utility model is further explained in connection with the drawings and examples.

[0022] Please refer to Figures 1-4 The utility model provides a kind of example: simple four-wheel drive conversion follow-up valve group, including valve body 1;Still including pressure assembly, main oil inlet 3, auxiliary oil inlet 4, first oil outlet 5 and second oil outlet 6, the left position of the front side surface of valve body 1 is equipped with main oil inlet 3, the right position of the front side surface of valve body 1 is equipped with auxiliary oil inlet 4, the right position of the rear side surface of valve body 1 is equipped with first oil outlet 5, the right position of the rear side surface of valve body 1 is equipped with second oil outlet 6, first oil outlet 5 and second oil outlet 6 are connected with the same side oil port of rear wheel two hydraulic motors, the position of the left and right side surface of valve body 1 corresponding main oil inlet 3 and auxiliary oil inlet 4 is embedded with pressure assembly, by setting main oil inlet 3, when pressure assembly opens, system high pressure oil can enter from main oil inlet 3, and flow from first oil outlet 5 and second oil outlet 6, oil is supplied to rear wheel hydraulic motor, and rear wheel is driven to walk by hydraulic motor, reduces the rotation speed of front wheel drive, simultaneously reaches four-wheel drive walking effect, increases the walking force of mechanical equipment, to solve the existing agricultural machinery and equipment in the field of walking system, usually adopt front wheel drive to walk in farmland picking or harvesting, if these machines are picked or harvested in farmland, walking encounters too large driving resistance, so that front wheel is rotated or skids and cannot walk.

[0023] Please refer to Figures 1-4In the embodiment, the pressure assembly comprises the oil cylinder 21, the spring 22 and the sliding valve core 23; the left and right side surfaces of the valve body 1 are embedded with the oil cylinder 21 at positions corresponding to the main oil inlet 3 and the auxiliary oil inlet 4, the two oil cylinders 21 are connected with the spring 22 at one end inserted into the valve body 1, the spring 22 is provided with the sliding valve core 23 at an end away from the corresponding oil cylinder 21, the hydraulic pressure in the oil cylinder 21 can push the sliding valve core 23 to move, so as to open the flow channel of the main oil inlet 3 and the auxiliary oil inlet 4 for oil supply, when the pressure is small, the spring 22 can automatically retract, so as to close the flow channel, the pressure assembly further comprises the limiting rod 24; the side surface of the oil cylinder 21 close to the corresponding spring 22 is provided with one end of the limiting rod 24, the other end of the limiting rod 24 is in sliding connection with the sliding valve core 23, the limiting rod 24 can assist the sliding valve core 23 to move, so as to improve the stability and accuracy of the movement, the rear surface of the valve body 1 is provided with the first auxiliary oil outlet 7 at a left position of the first oil outlet 5, the rear surface of the valve body 1 is provided with the second auxiliary oil outlet 8 at a right position of the second oil outlet 6, the first auxiliary oil outlet 7 and the second auxiliary oil outlet 8 are connected with the other side oil port of the rear wheel hydraulic motor, the first auxiliary oil outlet 7 and the second auxiliary oil outlet 8 can assist the first oil outlet 5 and the second oil outlet 6 to supply oil, so as to improve the balance of the device as a whole.

[0024] Please refer to Figures 1-4 In the embodiment, the port positions of the main oil inlet 3, the auxiliary oil inlet 4, the first oil outlet 5, the second oil outlet 6, the first auxiliary oil outlet 7 and the second auxiliary oil outlet 8 are provided with the connecting head 9, the outer surface of the connecting head 9 is provided with the nut 10, the connecting head 9 and the nut 10 can facilitate the quick butt joint installation of the oil pipe by the staff, and have high sealing effect, so as to avoid leakage, the right surface of the valve body 1 is provided with the electromagnetic valve 11 at a rear position, the electromagnetic valve 11 can control the pressure assembly, the upper surface of the electromagnetic valve 11 is provided with the controller 12, the controller 12 is electrically connected with the speed sensor of the front wheel walking hydraulic motor, when the controller 12 detects that the speed data of the front wheel walking hydraulic motor is lower than the threshold value, the controller 12 feeds back a signal to the electromagnetic valve 11, so as to control the electromagnetic valve 11 to work.

[0025] In the work, by setting spring 22 and sliding spool 23, the hydraulic pressure in the oil cylinder 21 can push the sliding spool 23 to move, so as to open the flow channel of the main oil inlet 3 and the auxiliary oil inlet 4 to supply oil, when the pressure is small, the spring 22 can automatically retract, so as to close the flow channel, by setting the limiting rod 24, the sliding spool 23 can be moved, the stability and accuracy of the movement is improved, by setting the first auxiliary oil outlet 7 and the second auxiliary oil outlet 8, the first oil outlet 5 and the second oil outlet 6 can be supplied, the balance of the whole device is improved, by setting the connector 9 and the nut 10, the staff can quickly butt joint the oil pipe, at the same time, the sealing effect is high, the leakage can be avoided, by setting the electromagnetic valve 11, the pressure assembly can be controlled, by setting the controller 12, when the controller 12 detects that the rotational speed data of the front wheel walking hydraulic motor is lower than the threshold value, the signal is fed back to the electromagnetic valve 11, the electromagnetic valve 11 is controlled to work.

[0026] Through the above steps, by setting the main oil inlet 3, when the pressure assembly is opened, the system high pressure oil can enter from the main oil inlet 3 and flow out from the first oil outlet 5 and the second oil outlet 6, supply oil to the rear wheel hydraulic motor, make the rear wheel driven by the hydraulic motor to walk, reduce the front wheel driving speed, at the same time, achieve the four wheel driving walking effect, increase the walking force of the mechanical equipment, so as to solve the problem that the existing agricultural machinery equipment usually adopts front wheel driving to walk in the field to pick or harvest, if these machines walk in the field to pick or harvest, the walking resistance is too large, the front wheel cannot walk in rotation or sliding.

Claims

1. A simplified four-wheel drive conversion follower valve assembly, comprising a valve body (1); characterized in that: It also includes a pressure component, a main oil inlet (3), an auxiliary oil inlet (4), a first oil outlet (5), and a second oil outlet (6). The main oil inlet (3) is located on the left side of the front surface of the valve body (1), the auxiliary oil inlet (4) is located on the right side of the front surface of the valve body (1), the first oil outlet (5) is located on the right side of the rear surface of the valve body (1), and the second oil outlet (6) is located on the right side of the rear surface of the valve body (1). The first oil outlet (5) and the second oil outlet (6) are connected to the oil ports on the same side of the two hydraulic motors of the rear wheel. The pressure component is embedded on the left and right sides of the valve body (1) at the positions corresponding to the main oil inlet (3) and the auxiliary oil inlet (4).

2. The simplified four-wheel drive conversion follower valve assembly according to claim 1, characterized in that: The pressure assembly includes a hydraulic cylinder (21), a spring (22), and a sliding valve core (23). The hydraulic cylinder (21) is embedded in the left and right surfaces of the valve body (1) at the positions corresponding to the main oil inlet (3) and the auxiliary oil inlet (4). The ends of the two hydraulic cylinders (21) inserted into the valve body (1) are connected to the springs (22), and the ends of the springs (22) away from the corresponding hydraulic cylinders (21) are provided with sliding valve cores (23).

3. The simplified four-wheel drive conversion follower valve assembly according to claim 2, characterized in that: The pressure assembly also includes a limit rod (24); one end of the symmetrical limit rod (24) is provided on the side surface of the cylinder (21) near the corresponding spring (22), and the other end of the limit rod (24) is slidably connected to the sliding valve core (23).

4. The simplified four-wheel drive conversion follower valve assembly according to claim 1, characterized in that: A first auxiliary oil outlet (7) is provided on the rear surface of the valve body (1) to the left of the first oil outlet (5), and a second auxiliary oil outlet (8) is provided on the rear surface of the valve body (1) to the right of the second oil outlet (6). The first auxiliary oil outlet (7) and the second auxiliary oil outlet (8) are connected to the oil outlets on the other side of the two hydraulic motors of the rear wheel.

5. The simplified four-wheel drive conversion follower valve assembly according to claim 1, characterized in that: Connectors (9) are provided at the port positions of the main oil inlet (3), auxiliary oil inlet (4), first oil outlet (5), second oil outlet (6), first auxiliary oil outlet (7) and second auxiliary oil outlet (8), and nuts (10) are provided on the outer surface of the connectors (9).

6. The simplified four-wheel drive conversion follower valve assembly according to claim 1, characterized in that: A solenoid valve (11) is provided at the rear position on the right side surface of the valve body (1).

7. The simplified four-wheel drive conversion follower valve assembly according to claim 1, characterized in that: A controller (12) is provided on the upper surface of the solenoid valve (11), and the controller (12) is electrically connected to the speed sensor of the front wheel travel hydraulic motor.

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