Agricultural mechanical parking device
By designing an electrically controlled hydraulic parking device on agricultural machinery, and using hydraulic systems and button control to achieve large braking torque and independent parking operation, the problem of insufficient strength and safety hazards of tightening cables with bare hands in the prior art is solved. Safe parking and structural compactness on complex terrain are achieved.
Patent Information
- Application Number
- CN202421327474.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Existing agricultural machinery requires tightening the cable with bare hands when parking, resulting in large force and small braking torque, and safety hazards for parking on complex terrains.
Design an electrically controlled hydraulic parking device including brake calipers, hydraulically controlled check valves, solenoid reversing valves and plug-in valves, providing large braking torque through the hydraulic system, and controlling the solenoid reversing valves and plug-in through buttons The valve realizes oil circuit conversion and on-off, independent braking and parking pipes, avoiding manual operation.
It realizes safe parking on complex terrain, which is simple and labor-saving, and has a compact structure, without major changes to the original machinery.
Smart Images
Figure CN222296821U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of parking equipment for agricultural machinery, in particular to a parking device for agricultural machinery. Background Art
[0002] Most existing agricultural machinery uses a manual cable locking mechanism when parking. When in use, the parking operation can be completed by tightening the cable by hand. However, this parking method has the defects of requiring a large force and a small braking torque when operating by hand, and there are safety hazards when the agricultural machinery is parked in complex terrain. Therefore, it is necessary to provide an agricultural machinery parking solution that solves the problems of the above existing technical solutions. Utility Model Content
[0003] The purpose of the utility model is to provide an agricultural machinery parking device in order to solve the above-mentioned problem.
[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0005] A parking device for agricultural machinery comprises a brake caliper, wherein the brake caliper is provided with two corresponding friction plates, an oil inlet joint is provided on one side of the brake caliper, and the brake caliper further comprises a hydraulically controlled one-way valve, an electromagnetic reversing valve and a cartridge valve, wherein the oil inlet joint is connected to an oil port at one end of the hydraulically controlled one-way valve through an oil pipe, the oil port at the other end of the hydraulically controlled one-way valve is connected to an oil port A at one end of the electromagnetic reversing valve through an oil pipe, a T oil return port at the other end of the electromagnetic reversing valve corresponding to the A oil port is connected to an oil port of a fuel tank through an oil pipe, an oil port on one side of the hydraulically controlled one-way valve is connected to an oil port B at one end of the electromagnetic reversing valve through an oil pipe, an oil inlet P at the other end of the electromagnetic reversing valve corresponding to the B oil port is connected to another oil port of the fuel tank through an oil pipe, an oil port of the cartridge valve is connected to the P oil inlet of the electromagnetic reversing valve through an oil pipe, and another oil port of the cartridge valve is connected to the T oil return port of the electromagnetic reversing valve through an oil pipe.
[0006] Preferably, the electromagnetic reversing valve is a three-position four-way electromagnetic valve.
[0007] Preferably, the control buttons of the electromagnetic reversing valve are button SB1 and button SB2, button SB1 controls the power on and off of coil YA1 of the electromagnetic reversing valve, and button SB2 controls the power on and off of coil YB1 of the electromagnetic reversing valve.
[0008] Preferably, the cartridge valve is a two-position normally open cartridge valve.
[0009] Preferably, the control button of the cartridge valve is a button SB, and the button SB controls the power on and off of the coil YA of the cartridge valve.
[0010] Preferably, an overflow valve is arranged between the oil pipe connected to the P oil inlet of the electromagnetic reversing valve and the oil pipe connected to the T oil return port of the electromagnetic reversing valve, one oil port of the overflow valve is connected to the oil pipe connected to the P oil inlet of the electromagnetic reversing valve through the oil pipe, and the other oil port of the overflow valve is connected to the oil pipe connected to the T oil return port of the electromagnetic reversing valve through the oil pipe.
[0011] Preferably, the flow rate of the hydraulic oil in the oil pipe is 20 L / min.
[0012] Preferably, the pressure value of the hydraulic oil in the oil pipe is 10-16 MPa.
[0013] The utility model can be used for large agricultural traveling machinery and heavy agricultural traveling machinery.
[0014] The beneficial effects of the utility model are as follows: (1) the utility model adopts an electronically controlled hydraulic parking solution, and the braking torque of the hydraulic system is large. Compared with the existing manual cable locking mechanism, the parking effect is good, and the agricultural walking machinery can be parked on complex terrain without any safety hazards; (2) the solenoid valve and the coil on the cartridge valve are energized and de-energized by controlling the button to control the conversion and on-off of the oil circuit. Compared with the existing parking method of manually tightening the cable, the operation is simple and labor-saving; (3) the parking device adds a parking pipeline on the basis of the original brake caliper of the agricultural machinery. Braking and parking belong to two pipelines. Braking and parking work independently without interfering with each other, and the original appearance and internal structure of the agricultural machinery do not need to be significantly modified, so that the structure of the agricultural machinery is compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is an electrical schematic diagram of the parking control of the utility model.
[0017] Description of reference numerals:
[0018] 1. Brake caliper; 2. Friction plate; 3. Brake disc; 4. Oil inlet connector; 5. Hydraulic control check valve; 6. Solenoid reversing valve; 7. Cartridge valve; 8. Overflow valve. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings:
[0020] like Figure 1As shown, the utility model provides a parking device for agricultural machinery, including a brake caliper 1, on which two corresponding friction plates 2 are arranged. When installing, the brake disc 3 of the agricultural machinery is placed between the two friction plates 2 on the brake caliper 1. An oil inlet connector 4 is arranged on one side of the brake caliper 1, and the brake caliper 1 can use the existing brake caliper 1. It also includes a hydraulically controlled one-way valve 5, an electromagnetic reversing valve 6 and a cartridge valve 7. The oil inlet connector 4 is connected to the oil port at one end of the hydraulically controlled one-way valve 5 through an oil pipe, and the oil port at the other end of the hydraulically controlled one-way valve 5 is connected to the oil port A at one end of the electromagnetic reversing valve 6 through an oil pipe. The T oil return port corresponding to the A oil port at the other end of the electromagnetic reversing valve 6 is connected to an oil port of the oil tank through an oil pipe, the oil port on one side of the hydraulic control check valve 5 is connected to the B oil port at one end of the electromagnetic reversing valve 6 through an oil pipe, the P oil inlet corresponding to the B oil port at the other end of the electromagnetic reversing valve 6 is connected to another oil port of the oil tank through an oil pipe, one oil port of the cartridge valve 7 is connected to the P oil inlet of the electromagnetic reversing valve 6 through an oil pipe, and the other oil port of the cartridge valve 7 is connected to the T oil return port of the electromagnetic reversing valve 6 through an oil pipe. Among them, the electromagnetic reversing valve 6 is a three-position four-way electromagnetic valve; the cartridge valve 7 is a two-position normally open cartridge valve.
[0021] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, further, the control buttons of the electromagnetic reversing valve 6 are button SB1 and button SB2, both of which are one-open-one-close type, button SB1 controls the power on and off of the coil YA1 of the electromagnetic reversing valve 6, and button SB2 controls the power on and off of the coil YB1 of the electromagnetic reversing valve 6. The control button of the cartridge valve 7 is button SB, which is one-open-one-close type, and button SB controls the power on and off of the coil YA of the cartridge valve 7.
[0022] like Figure 1 As shown, on the basis of the above embodiment, further, a relief valve 8 is provided between the oil pipe connected to the P oil inlet of the electromagnetic reversing valve 6 and the oil pipe connected to the T oil return port of the electromagnetic reversing valve 6. One oil port of the relief valve 8 is connected to the oil pipe connected to the P oil inlet of the electromagnetic reversing valve 6 through the oil pipe, and the other oil port of the relief valve 8 is connected to the oil pipe connected to the T oil return port of the electromagnetic reversing valve 6 through the oil pipe.
[0023] like Figure 1 As shown, based on the above embodiment, further, the flow value of the hydraulic oil in the oil pipe is 20L / min. The pressure value of the hydraulic oil in the oil pipe is 10-16MPa.
[0024] like Figure 1 and Figure 2As shown, (1) when the agricultural machinery needs to park, the buttons SB1 and SB are pressed, so that the coil YA1 of the electromagnetic reversing valve 6 and the coil YA of the cartridge valve 7 are energized to realize the conversion of the hydraulic oil circuit. At this time, the hydraulic oil in the oil tank enters from the P oil inlet of the electromagnetic reversing valve 6 through the oil pipe and is discharged from the A oil port of the electromagnetic reversing valve 6. The hydraulic oil discharged from the A oil port pushes open the hydraulic control check valve 5 and enters the cavity of the brake caliper 1 through the pipeline from the oil inlet joint 4. The hydraulic oil in the cavity pushes the piston to move so that the two The friction plates 2 are close to each other to clamp the brake disc 3; when the two friction plates 2 on the brake caliper 1 clamp the brake disc 3, press the button SB1 again to de-energize the coil YA1 of the electromagnetic reversing valve 6, and the valve core of the electromagnetic reversing valve 6 returns to the middle position. The A oil port and the B oil port of the electromagnetic reversing valve 6 are connected to the oil tank through the oil pipe (in a Y shape). At this time, the hydraulically controlled one-way valve 5 is immediately reset and closed, cutting off the oil circuit between the brake caliper 1 and the electromagnetic reversing valve 6, so that the pressure in the brake caliper 1 remains unchanged and is always in the parking state. (2) When the parking state needs to be released and the agricultural machinery needs to be started, the buttons SB2 and SB are pressed, so that the coil YB1 of the electromagnetic reversing valve 6 and the coil YA of the cartridge valve 7 are energized and actuated, realizing the conversion of the hydraulic oil circuit. At this time, the hydraulic oil in the oil tank enters the P oil inlet of the electromagnetic reversing valve 6 through the oil pipe and is discharged from the B oil port of the electromagnetic reversing valve 6. The hydraulic oil discharged from the B oil port pushes open the valve core of the hydraulic control check valve 5, and the hydraulic oil in the cavity of the brake caliper 1 is discharged from the oil inlet connector 4 under the action of the return spring. The oil flows back to the oil tank through the oil pipe, passes through the hydraulically controlled one-way valve 5 and the electromagnetic reversing valve 6 in sequence, and the parking state is released; when the parking state is released, press the button SB2 again, so that the coil YB1 of the electromagnetic reversing valve 6 loses power, and the valve core of the electromagnetic reversing valve 6 returns to the middle position. The A oil port and the B oil port of the electromagnetic reversing valve 6 are connected to the oil tank through the oil pipe (in a Y shape). At this time, the hydraulically controlled one-way valve 5 is immediately reset and closed, cutting off the oil circuit between the brake caliper 1 and the electromagnetic reversing valve 6, so that the brake caliper 1 maintains the released parking state.
[0025] The parking device of the utility model adds a parking pipeline on the basis of the original brake caliper of the agricultural machinery. Braking and parking belong to two pipelines. Braking and parking work independently without interfering with each other. Moreover, the appearance and internal structure of the original agricultural machinery do not need to be greatly modified, so that the structure of the agricultural machinery is compact.
[0026] The above are only preferred embodiments of the present invention, and do not limit the scope of the present invention. A person skilled in the art should understand that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and purposes of the present invention, which should all be included in the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents.
Claims
1. A parking device for agricultural machinery, comprising a brake caliper, wherein the brake caliper is provided with two correspondingly matched friction plates, and an oil inlet connector is provided on one side of the brake caliper, characterized in that: It also includes a hydraulically controlled one-way valve, an electromagnetic reversing valve and a cartridge valve, wherein the oil inlet joint is connected to an oil port at one end of the hydraulically controlled one-way valve through an oil pipe, the oil port at the other end of the hydraulically controlled one-way valve is connected to an A oil port at one end of the electromagnetic reversing valve through an oil pipe, the T oil return port at the other end of the electromagnetic reversing valve corresponding to the A oil port is connected to an oil port of the oil tank through an oil pipe, an oil port on one side of the hydraulically controlled one-way valve is connected to an B oil port at one end of the electromagnetic reversing valve through an oil pipe, an P oil inlet at the other end of the electromagnetic reversing valve corresponding to the B oil port is connected to another oil port of the oil tank through an oil pipe, an oil port of the cartridge valve is connected to the P oil inlet of the electromagnetic reversing valve through an oil pipe, and the other oil port of the cartridge valve is connected to the T oil return port of the electromagnetic reversing valve through an oil pipe.
2. The parking device for agricultural machinery according to claim 1, characterized in that: The electromagnetic reversing valve is a three-position four-way electromagnetic valve.
3. The parking device for agricultural machinery according to claim 2, characterized in that: The control buttons of the electromagnetic reversing valve are button SB1 and button SB2. Button SB1 controls the power on and off of coil YA1 of the electromagnetic reversing valve, and button SB2 controls the power on and off of coil YB1 of the electromagnetic reversing valve.
4. The parking device for agricultural machinery according to claim 1, characterized in that: The cartridge valve is a two-position normally open cartridge valve.
5. The parking device for agricultural machinery according to claim 4, characterized in that: The control button of the cartridge valve is button SB, and button SB controls the power supply and loss supply of coil YA of the cartridge valve.
6. The parking device for agricultural machinery according to claim 1, characterized in that: An overflow valve is arranged between the oil pipe connected to the P oil inlet of the electromagnetic reversing valve and the oil pipe connected to the T oil return port of the electromagnetic reversing valve, one oil port of the overflow valve is connected to the oil pipe connected to the P oil inlet of the electromagnetic reversing valve through the oil pipe, and the other oil port of the overflow valve is connected to the oil pipe connected to the T oil return port of the electromagnetic reversing valve through the oil pipe.
7. The parking device for agricultural machinery according to claim 1, characterized in that: The flow rate of the hydraulic oil in the oil pipe is 20L / min.
8. The parking device for agricultural machinery according to claim 1, characterized in that: The pressure value of the hydraulic oil in the oil pipe is 10-16 MPa.