Full-power braking system with ABS (Anti-lock Brake System) and driving protection function and tractor

Abstract

The utility model relates to a full-power brake system with an ABS (Anti-lock Brake System) and a driving protection function and a tractor, and the brake system comprises an electronic control unit, a two-way brake valve, an electro-hydraulic brake valve, four ABS valves, four speed sensors and four brake cylinders, and the electro-hydraulic brake valve, the four ABS valves, the four speed sensors and the four brake cylinders are respectively in communication connection with the electronic control unit. The vehicle has the advantages of being simple in structure, reasonable in design, diversified in function and convenient to use, having ABS and driving anti-skid functions, meanwhile having an unmanned driving mode and being capable of achieving the ramp automatic parking function.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor braking, in particular to a full-power braking system with ABS and drive protection functions and a tractor. Background Art

[0002] A steer tractor is a type of agricultural machinery primarily used for farming, sowing, and harvesting. Its structure primarily includes an engine, chassis, wheels, and a steer system. The steer tractor's operating principle relies on steering via the steer system. This system utilizes a hydraulic power-assist mechanism to control the movement of the hydraulic cylinder piston to achieve wheel steer and steering. During steer, the hydraulic cylinder piston rod contracts, tilting the wheel inward to achieve steer; during steering, the hydraulic cylinder piston rod extends, tilting the wheel outward to achieve steering. The advantage of a steer tractor is its ability to reduce the turning radius, making the tractor more maneuverable in confined working environments. Furthermore, its structural design and operating principle make operation easier while maintaining good stability during steering.

[0003] Current tractors with turn-around steering do not have a full power braking system with ABS and drive anti-skid function. Utility Model Content

[0004] The utility model provides a full-power brake system with ABS and drive protection functions and a tractor, aiming to solve the problems in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A full-power braking system with ABS and driver protection functions, comprising an electronic control unit, a dual-circuit brake valve, an electro-hydraulic brake valve, four ABS valves, four speed sensors, and four brake cylinders, wherein the electro-hydraulic brake valve, the four ABS valves, the four speed sensors, and the four brake cylinders are respectively communicatively connected to the electronic control unit;

[0007] The four ABS valves are respectively provided with an oil inlet, an oil outlet and an oil return port, and the oil outlet on each ABS valve can be communicated with the oil inlet or the oil return port; the dual-way brake valve is provided with an oil inlet P1, an oil inlet P2, an oil outlet B1, an oil outlet B2, an oil return port T1 and an oil return port T2, the oil outlet B1 can be communicated with the oil inlet P1 or the oil return port T1, and the oil outlet B2 can be communicated with the oil inlet P2 or the oil return port T2;

[0008] The oil inlet P1 is connected to one end of the oil inlet line 1, and the oil inlet P2 is connected to one end of the oil inlet line 2; the oil outlet B1 is connected to one end of the oil supply line 1, and the oil outlet B2 is connected to one end of the oil supply line 2; the oil inlets on two of the ABS valves are connected to the oil supply line 1 through pipelines, and the oil inlets on the remaining two ABS valves are connected to the oil supply line 2 through pipelines; the four oil outlets are connected to the inner cavities of the four brake cylinders through pipelines.

[0009] The electro-hydraulic brake valve is provided with interface 1, interface 2 and interface 3. Interface 2 can be connected to interface 1 or interface 2, and interface 2 is connected to the electric control interface on the dual-way brake valve through a pipeline.

[0010] The beneficial effects of the utility model are as follows: during operation, when in unmanned driving mode, the navigation signal sends a braking signal to the electronic control unit, and the electronic control unit controls the electro-hydraulic brake valve to open in proportion to the braking deceleration demand, thereby pilot-controlling the displacement of the dual-circuit brake valve to simulate manual braking, so that the brake pressures B1 and B2 reach the ABS valve, and the ABS valve controls the opening size of the valve according to the speed sensor signal to realize the active braking function;

[0011] When the speed sensor signal of one tire is significantly greater than the other three speed sensor signals during normal driving, the controller determines that one tire is slipping. In this way, the controller will control the electro-hydraulic brake valve to open and the corresponding ABS valve opening to become larger. The other three ASB valves will be closed, thereby controlling the speed of the fast-moving tire to drop to the same level as the other three, thereby realizing the driving anti-skid function.

[0012] When the tractor is parked on a slope, when the speed sensor detects rotation speed, the electronic control unit will control the electro-hydraulic control valves and ABS valves of the four tires to automatically brake, thereby realizing the automatic parking function on the slope.

[0013] The utility model has a simple structure and a reasonable design, and has ABS and driving anti-skid functions. It also has an unmanned driving mode and can realize the automatic parking function on a slope. It has multiple functions and is easy to use.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the dual-way brake valve includes two brake valves, the oil inlet P1, the oil outlet B1 and the oil return port T1 are respectively arranged on one of the brake valves, and the oil inlet P2, the oil outlet B2 and the oil return port T2 are respectively arranged on the other brake valve; the two brake valves are respectively provided with the electronic control interface, and the two electronic control interfaces are respectively connected to the interface 2 through pipelines.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that during operation, when in unmanned driving mode, the navigation signal sends a braking signal to the electronic control unit, and the electronic control unit controls the electro-hydraulic brake valve to open in proportion to the braking deceleration requirement, thereby pilot-controlling the displacement of the dual-way brake valve to simulate manual braking, so that the braking pressures B1 and B2 reach the ABS valve, and the ABS valve controls the opening size of its valve according to the speed sensor signal to realize the active braking function.

[0017] Furthermore, the two brake valves are respectively provided with a balancing interface connected to their own valve chambers, and the two balancing interfaces are connected through a balancing pipeline.

[0018] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The two brake valves are connected by a balancing pipeline so that the output pressures of the two brake valves are consistent, so that the brake pressures output by the two valves are consistent, ensuring that the vehicle can go straight without turning.

[0019] Furthermore, the two brake valves are respectively provided with a return liquid interface, and the two return liquid interfaces are respectively connected to the oil supply line 1 and the oil supply line 2 through pipelines; the two brake valves are also respectively provided with a control interface, and the two control interfaces are respectively connected to the oil supply line 1 and the oil supply line 2 through control pipelines, and control valves are respectively fixedly installed on the two control pipelines.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and realization of foot-operated braking by setting a control line and a control valve.

[0021] Furthermore, the oil return port T1 is connected to one end of the oil return pipeline 1, and the other end of the oil return pipeline 1 is connected to the oil tank; the oil return port T2 is connected to the oil return pipeline 1 through the oil return pipeline 2.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable distribution of the oil return pipeline 1 and the oil return pipeline 2, space saving and cost reduction.

[0023] Furthermore, it also includes two accumulators that are respectively connected to the electronic control unit for communication, and the two accumulators are respectively connected to the oil inlet pipeline 1 and the oil inlet pipeline 2 through pipelines.

[0024] The beneficial effects of adopting the above further solution are simple structure and reasonable design of the number of accumulators. One of the accumulators can still provide power for the corresponding two ABS valves for braking when the hydraulic system loses power. The other accumulator can still provide power for the remaining two ABS valves for braking when the hydraulic system loses power, ensuring that the system can brake normally and operate safely.

[0025] Furthermore, it also includes a two-way filling valve communicatively connected to the electronic control unit, and the two-way filling valve is provided with an oil inlet P, an oil return port T, an oil outlet A1 and an oil outlet A2. The oil inlet P can be communicated with the oil outlet A1 and the oil return port T can be communicated with the oil outlet A2, or the oil inlet P can be communicated with the oil outlet A2 and the oil return port T can be communicated with the oil outlet A1; the oil outlet A1 is communicated with the other end of the oil inlet pipeline one, and the oil outlet A2 can be communicated with the other end of the oil inlet pipeline two.

[0026] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the use of a dual-way filling valve to fill the accumulator.

[0027] Furthermore, a pump is included, and the outlet of the pump is connected to the oil inlet P through a pipeline.

[0028] The beneficial effects of adopting the above further solution are simple structure and reasonable design, and the oil is sent to the two-way filling valve and then to the accumulator by using a pump.

[0029] Furthermore, it also includes a pressure switch and a brake alarm. The pressure switch is connected to the two-way liquid filling valve through a pipeline, and the brake alarm is connected to the pressure switch through a pipeline.

[0030] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The pressure switch can be used to monitor the pressure of the accumulator to prevent the accumulator pressure from being too low. Once the pressure is lower than the system design value of 100 bar, the brake alarm will sound a brake alarm so that the operator can deal with it in time.

[0031] The utility model also relates to a tractor, comprising the above-mentioned full-power braking system with ABS and drive protection functions.

[0032] The beneficial effect of adopting the above further solution is that the utility model also provides a tractor with a simple structure, reasonable design, ABS and drive anti-skid functions, an unmanned driving mode, and the ability to realize automatic parking on a slope, with diverse functions and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 This is a schematic structural diagram of the dual-circuit brake valve in the present utility model;

[0035] Figure 3 This is a schematic structural diagram of the dual-way liquid filling valve in the utility model;

[0036] Figure 4 This is a schematic diagram of the structure of the electro-hydraulic brake valve in the utility model;

[0037] Figure 5 It is a structural diagram of the ABS valve in this utility model.

[0038] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0039] 1. Electronic control unit; 2. Dual-way brake valve; 3. Electro-hydraulic brake valve; 4. ABS valve; 5. Speed sensor; 6. Oil inlet line 1; 7. Oil inlet line 2; 8. Oil supply line 1; 9. Oil supply line 2; 10. Brake valve; 11. Balancing line; 12. Control valve; 13. Oil return line 1; 14. Oil return line 2; 15. Accumulator; 16. Dual-way charging valve; 17. Pump; 18. Pressure switch; 19. Brake alarm; 20. Fuel tank. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0044] Example 1

[0045] like Figures 1 to 5 As shown, this embodiment provides a full-power braking system with ABS and driving protection functions, including an electronic control unit 1, a dual-circuit brake valve 2, an electro-hydraulic brake valve 3, four ABS valves 4, four speed sensors 5, and four brake cylinders. The electro-hydraulic brake valve 3, the four ABS valves 4, the four speed sensors 5, and the four brake cylinders are respectively communicatively connected to the electronic control unit 1;

[0046] The four ABS valves 4 are respectively provided with an oil inlet, an oil outlet and an oil return port, and the oil outlet on each ABS valve 4 can be communicated with the oil inlet or the oil return port; the dual-way brake valve 2 is provided with an oil inlet P1, an oil inlet P2, an oil outlet B1, an oil outlet B2, an oil return port T1 and an oil return port T2, the oil outlet B1 can be communicated with the oil inlet P1 or the oil return port T1, and the oil outlet B2 can be communicated with the oil inlet P2 or the oil return port T2;

[0047] The oil inlet P1 is connected to one end of the oil inlet line 1 6, and the oil inlet P2 is connected to one end of the oil inlet line 2 7; the oil outlet B1 is connected to one end of the oil supply line 1 8, and the oil outlet B2 is connected to one end of the oil supply line 2 9; the oil inlets on two of the ABS valves 4 are connected to the oil supply line 1 8 through pipelines, and the oil inlets on the remaining two ABS valves 4 are connected to the oil supply line 2 9 through pipelines; the four oil outlets are connected to the inner cavities of the four brake cylinders through pipelines.

[0048] The electro-hydraulic brake valve 3 is provided with interface 1, interface 2 and interface 3. Interface 2 can be connected to interface 1 or interface 2, and interface 2 is connected to the electric control interface on the dual-way brake valve 2 through a pipeline.

[0049] During operation, when in unmanned driving mode, the navigation signal sends a braking signal to the electronic control unit 1 (equivalent to the controller in the prior art). The electronic control unit 1 controls the electro-hydraulic brake valve 3 to open in proportion to the braking deceleration demand, thereby pilot-controlling the displacement of the dual-circuit brake valve 2 to simulate manual braking. As a result, the brake pressures B1 and B2 reach the ABS valve 4. The ABS valve 4 controls the opening size of the valve according to the speed sensor signal to achieve active braking function.

[0050] When the speed sensor 5 signal of one tire is significantly greater than the other three speed sensor 5 signals during normal driving, the electronic control unit 1 determines that one tire is slipping. At this time, the electronic control unit 1 controls the electro-hydraulic brake valve to open and the corresponding ABS valve to open wider. The other three ASB valves are closed, thereby controlling the rotation speed of the faster tire to drop to the same level as the other three, thereby realizing the driving anti-skid function.

[0051] When the tractor is parked on a slope, when the speed sensor detects rotation speed, the electronic control unit will control the electro-hydraulic control valves and ABS valves of the four tires to automatically brake, thereby realizing the automatic parking function on the slope.

[0052] Preferably, in this embodiment, the interface 1 on the electro-hydraulic brake valve 3 is an oil inlet, which is connected to the oil inlet pipeline 1 6 through a pipeline, has a reasonable design, and is convenient for oil inlet.

[0053] Preferably, in this embodiment, the above four ASB valves 4 are three-position three-way proportional valves, which can control the opening of the valve by controlling the current of the solenoid valve. The greater the current, the larger the opening, and thus the greater the controlled braking pressure and the greater the braking force.

[0054] Moreover, the electro-hydraulic brake valve 3 also adopts a three-position three-way electric proportional valve.

[0055] In addition, during the braking process of the dual-way brake valve 2 , the electro-hydraulic brake valve 3 can convert the angle into an electrical signal and send it to the electronic control unit 1 .

[0056] The four speed sensors 5 are respectively used to provide the rotation speeds of the four wheels in real time.

[0057] Based on the above solution, the four brake cylinders are respectively installed on the chassis of the tractor near the four wheels, and are used to brake the four wheels respectively.

[0058] In addition, the above-mentioned electronic control unit 1 (equivalent to the controller in the prior art), electro-hydraulic brake valve 3, four ASB valves 4 and four speed sensors 5 respectively adopt the prior art, and their specific structures and principles are not repeated here.

[0059] This embodiment has a simple structure and reasonable design, and has ABS and drive anti-skid functions. It also has an unmanned driving mode and can realize the automatic parking function on a slope. It has multiple functions and is easy to use.

[0060] Example 2

[0061] On the basis of Example 1, in this embodiment, the dual-way brake valve 2 includes two brake valves 10, the oil inlet P1, the oil outlet B1 and the oil return port T1 are respectively arranged on one of the brake valves 10, and the oil inlet P2, the oil outlet B2 and the oil return port T2 are respectively arranged on the other brake valve 10; the two brake valves 10 are respectively provided with the electronic control interface, and the two electronic control interfaces are respectively connected to the interface 2 through pipelines.

[0062] During operation, when in unmanned driving mode, the navigation signal sends a braking signal to the electronic control unit 1. The electronic control unit 1 controls the electro-hydraulic brake valve 3 to open according to the braking deceleration requirement ratio, thereby pilot-controlling the displacement of the dual-way brake valve 2 to simulate manual braking, so that the braking pressures B1 and B2 reach the ABS valve 4. The ABS valve 4 controls the opening size of its valve according to the speed sensor signal to realize the active braking function.

[0063] Example 3

[0064] On the basis of Example 2, in this embodiment, the two brake valves 10 are further provided with a balancing interface communicating with their own valve chambers, and the two balancing interfaces are communicated with each other through a balancing pipeline 11 .

[0065] This solution has a simple structure and a reasonable design. It uses a balancing pipe 11 to connect the two brake valves so that the output pressures of the two brake valves 10 are consistent, ensuring that the vehicle can go straight without turning.

[0066] Example 4

[0067] On the basis of any one of Examples 2 to 3, in this embodiment, the two brake valves 10 are further provided with return liquid interfaces, and the two return liquid interfaces are respectively connected to the oil supply line 1 8 and the oil supply line 2 9 through pipelines; the two brake valves 10 are further provided with control interfaces, and the two control interfaces are respectively connected to the oil supply line 1 8 and the oil supply line 2 9 through control pipelines, and control valves 12 are respectively fixedly installed on the two control pipelines.

[0068] This solution has a simple structure and a reasonable design, and realizes foot-operated braking by providing a control line and a control valve 12 .

[0069] Preferably, in this embodiment, the two brake valves 10 are preferably three-position five-way valves in the prior art.

[0070] Example 5

[0071] Based on any one of Examples 2 to 4, in this embodiment, the oil return port T1 is connected to one end of the oil return pipeline 13, and the other end of the oil return pipeline 13 is connected to the oil tank; the oil return port T2 is connected to the oil return pipeline 13 through the oil return pipeline 2 14.

[0072] This solution has a simple structure, and the oil return pipeline 13 and the oil return pipeline 2 14 are reasonably distributed, thus saving space and reducing costs.

[0073] Example 6

[0074] On the basis of the above embodiments, this embodiment further includes two accumulators 15 respectively connected to the electronic control unit 1 for communication, and the two accumulators 15 are respectively connected to the oil inlet line 1 6 and the oil inlet line 2 7 through pipelines.

[0075] This solution has a simple structure and the number of accumulators 15 is reasonably designed. When the hydraulic system loses power, one of the accumulators 15 can still provide power for the corresponding two ABS valves 4 for braking. When the hydraulic system loses power, the other accumulator 15 can still provide power for the remaining two ABS valves 4 for braking, ensuring that the system can brake normally and operate safely.

[0076] The function of the accumulator 15 is to provide power for braking when the hydraulic system loses power.

[0077] It should be noted that the two accumulators 15 mentioned above respectively adopt existing technologies, and their specific structures and principles are not described in detail here.

[0078] Example 7

[0079] On the basis of Example 6, this embodiment also includes a two-way filling valve 16 communicatively connected to the electronic control unit 1, and the two-way filling valve 16 is provided with an oil inlet P, an oil return port T, an oil outlet A1 and an oil outlet A2. The oil inlet P can be connected to the oil outlet A1 and the oil return port T can be connected to the oil outlet A2, or the oil inlet P can be connected to the oil outlet A2 and the oil return port T can be connected to the oil outlet A1; the oil outlet A1 is connected to the other end of the oil inlet pipeline 1 6, and the oil outlet A2 can be connected to the other end of the oil inlet pipeline 2 7.

[0080] This solution has a simple structure and a reasonable design, and utilizes a dual-way filling valve 16 to fill the accumulator 15 with liquid.

[0081] Preferably, in this embodiment, the entire scheme can be provided with an oil tank 20. In this case, the oil return port on the electro-hydraulic brake valve 3, the oil return port on the dual-way filling valve 16, the other end of the oil return pipeline 13 and the oil return ports on the four ABS valves are respectively connected to the oil tank 20 through pipelines.

[0082] Alternatively, multiple oil tanks can be provided, and the oil return ports on the various components are connected to the corresponding oil tanks respectively. The number of oil tanks is designed according to actual needs.

[0083] Example 8

[0084] On the basis of embodiment 7, this embodiment further includes a pump 17, and the outlet of the pump 17 is connected to the oil inlet P through a pipeline.

[0085] This solution has a simple structure and a reasonable design. The pump 17 is used to deliver the oil to the two-way filling valve 16 and then to the accumulator 15.

[0086] In addition, the inlet of the pump 17 is connected to the oil tank 20 through a pipeline.

[0087] It should be noted that the above-mentioned two-way filling valve 16 and pump 17 respectively adopt existing technologies, and their specific structures and principles are not described in detail here.

[0088] Example 9

[0089] Based on any one of Examples 7 to 8, this embodiment further includes a pressure switch 18 and a brake alarm 19. The pressure switch 18 is connected to the two-way filling valve 16 through a pipeline, and the brake alarm 19 is connected to the pressure switch 18 through a pipeline.

[0090] This solution has a simple structure and a reasonable design. The pressure switch 18 can be used to monitor the pressure of the accumulator 15 to prevent the pressure of the accumulator 15 from being too low. Once the pressure is lower than the system design value of 100 bar, the brake alarm 19 will issue a brake alarm so that the operator can handle it in time.

[0091] Preferably, in this embodiment, the normal pressure of the accumulator 15 is in the range of 130-160 bar.

[0092] It should be noted that the pressure switch 18 and the brake alarm 19 respectively adopt existing technologies, and their specific structures and principles are not described in detail here.

[0093] Example 10

[0094] On the basis of the above embodiments, this embodiment also provides a tractor, including the full power braking system with ABS and driving protection functions as described above.

[0095] This embodiment also provides a tractor with a simple structure, reasonable design, ABS and drive anti-skid functions, an unmanned driving mode, and the ability to automatically park on a slope. The tractor is versatile and easy to use.

[0096] Based on the above scheme, the above tractors mainly refer to bending and steering tractors.

[0097] The working principle of this utility model is as follows:

[0098] During operation, when in unmanned driving mode, the navigation signal sends a braking signal to the electronic control unit 1 (equivalent to the controller in the prior art). The electronic control unit 1 controls the electro-hydraulic brake valve 3 to open in proportion to the braking deceleration demand, thereby pilot-controlling the displacement of the dual-circuit brake valve 2 to simulate manual braking. As a result, the brake pressures B1 and B2 reach the ABS valve 4. The ABS valve 4 controls the opening size of the valve according to the speed sensor signal to achieve active braking function.

[0099] When the speed sensor 5 signal of one tire is significantly greater than the other three speed sensor 5 signals during normal driving, the electronic control unit 1 determines that one tire is slipping. At this time, the electronic control unit 1 controls the electro-hydraulic brake valve to open and the corresponding ABS valve to open wider. The other three ASB valves are closed, thereby controlling the rotation speed of the faster tire to drop to the same level as the other three, thereby realizing the driving anti-skid function.

[0100] When the tractor is parked on a slope, when the speed sensor detects rotation speed, the electronic control unit will control the electro-hydraulic control valves and ABS valves of the four tires to automatically brake, thereby realizing the automatic parking function on the slope.

[0101] It should be noted that all electronic components involved in the present invention adopt existing technologies, and the above components are electrically connected to the controller, and the control circuits between the controller and the components are existing technologies.

[0102] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0103] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Full power braking system with ABS and drive protection function, characterized by: The system comprises an electronic control unit (1), a dual-way brake valve (2), an electro-hydraulic brake valve (3), four ABS valves (4), four speed sensors (5) and four brake cylinders, wherein the electro-hydraulic brake valve (3), the four ABS valves (4), the four speed sensors (5) and the four brake cylinders are respectively connected to the electronic control unit (1) for communication; The four ABS valves (4) are respectively provided with an oil inlet, an oil outlet and an oil return port, and the oil outlet on each ABS valve (4) can be communicated with the oil inlet or the oil return port; the dual-way brake valve (2) is provided with an oil inlet P1, an oil inlet P2, an oil outlet B1, an oil outlet B2, an oil return port T1 and an oil return port T2, the oil outlet B1 can be communicated with the oil inlet P1 or the oil return port T1, and the oil outlet B2 can be communicated with the oil inlet P2 or the oil return port T2; The oil inlet P1 is connected to one end of the oil inlet line 1 (6), and the oil inlet P2 is connected to one end of the oil inlet line 2 (7); the oil outlet B1 is connected to one end of the oil supply line 1 (8), and the oil outlet B2 is connected to one end of the oil supply line 2 (9); the oil inlets on two of the ABS valves (4) are connected to the oil supply line 1 (8) through pipelines, and the oil inlets on the remaining two ABS valves (4) are connected to the oil supply line 2 (9) through pipelines; the four oil outlets are connected to the inner cavities of the four brake cylinders through pipelines. The electro-hydraulic brake valve (3) is provided with interface 1, interface 2 and interface 3; interface 2 can be communicated with interface 1 or interface 2, and interface 2 is communicated with the electric control interface on the dual-circuit brake valve (2) via a pipeline.

2. The full power braking system with ABS and driving protection function according to claim 1, characterized in that: The dual-circuit brake valve (2) comprises two brake valves (10), the oil inlet P1, the oil outlet B1 and the oil return port T1 are respectively arranged on one of the brake valves (10), and the oil inlet P2, the oil outlet B2 and the oil return port T2 are respectively arranged on the other brake valve (10); the two brake valves (10) are respectively provided with the electric control interface, and the two electric control interfaces are respectively communicated with the second interface through pipelines.

3. The full power braking system with ABS and driving protection function according to claim 2, characterized in that: The two brake valves (10) are also respectively provided with a balancing interface communicating with their own valve chambers, and the two balancing interfaces are communicated with each other via a balancing pipeline (11).

4. The full power braking system with ABS and driving protection function according to claim 2, characterized in that: The two brake valves (10) are also provided with return liquid interfaces, respectively, and the two return liquid interfaces are connected to the oil supply pipeline 1 (8) and the oil supply pipeline 2 (9) through pipelines; the two brake valves (10) are also provided with control interfaces, respectively, and the two control interfaces are connected to the oil supply pipeline 1 (8) and the oil supply pipeline 2 (9) through control pipelines, and control valves (12) are fixedly installed on the two control pipelines.

5. The full power braking system with ABS and driving protection function according to claim 2, characterized in that: The oil return port T1 is connected to one end of the oil return pipeline 1 (13), and the other end of the oil return pipeline 1 (13) is connected to the oil tank; the oil return port T2 is connected to the oil return pipeline 1 (13) through the oil return pipeline 2 (14).

6. The full-power braking system with ABS and driving protection function according to any one of claims 1 to 5, characterized in that: It also includes two accumulators (15) respectively connected to the electronic control unit (1) for communication, and the two accumulators (15) are respectively connected to the oil inlet line 1 (6) and the oil inlet line 2 (7) through pipelines.

7. The full power braking system with ABS and driving protection function according to claim 6, characterized in that: It also includes a two-way filling valve (16) that is communicatively connected to the electronic control unit (1), and the two-way filling valve (16) is provided with an oil inlet P, an oil return port T, an oil outlet A1 and an oil outlet A2, the oil inlet P can be communicated with the oil outlet A1 and the oil return port T can be communicated with the oil outlet A2, or the oil inlet P can be communicated with the oil outlet A2 and the oil return port T can be communicated with the oil outlet A1; the oil outlet A1 is communicated with the other end of the oil inlet pipeline 1 (6), and the oil outlet A2 can be communicated with the other end of the oil inlet pipeline 2 (7).

8. The full power braking system with ABS and driving protection function according to claim 7, characterized in that: It also includes a pump (17), the outlet of the pump (17) is connected to the oil inlet P through a pipeline.

9. The full power braking system with ABS and driving protection function according to claim 7, characterized in that: It also includes a pressure switch (18) and a brake alarm (19), wherein the pressure switch (18) is communicated with the two-way filling valve (16) through a pipeline, and the brake alarm (19) is connected to the pressure switch (18) through a pipeline.

10. A tractor, characterized in that: The invention comprises a full power braking system with ABS and driving protection functions as described in any one of claims 1 to 9.

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