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

Abstract

The invention relates to a full-power brake system with an ABS and a driving protection function and a tractor, 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 beneficial effects that the structure is simple, the design is reasonable, the ABS and driving anti-skid functions are achieved, meanwhile, the unmanned driving mode is achieved, the ramp automatic parking function can be achieved, the functions are diversified, and use is convenient.

Description

Technical Field

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

[0002] The bending and steering tractor is a kind of agricultural machinery equipment, which is mainly used for agricultural production such as tillage, sowing and harvesting. Its product structure mainly includes engine, chassis, wheels, bending and steering system and other parts. The working principle of the bending and steering tractor is mainly to realize the steering of the tractor through the bending and steering system. The system adopts a hydraulic power-assisting mechanism to realize the bending and steering of the wheels by controlling the movement of the hydraulic cylinder piston. During the bending process, the hydraulic cylinder piston rod contracts, causing the wheels to tilt inward to achieve bending; during the steering process, the hydraulic cylinder piston rod extends, causing the wheels to tilt outward to achieve steering. The advantage of the bending and steering tractor is that it can reduce the turning radius, making the tractor more flexible in a narrow working environment. In addition, its structural design and working principle make it easier to operate, while maintaining good stability during the steering process.

[0003] Current tractors with turn-around steering do not have full power braking systems with ABS and drive anti-skid functions. Summary of the invention

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

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

[0006] A full-power brake system with ABS and drive 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 connected to the electronic control unit for communication;

[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 pipeline 1, and the oil inlet P2 is connected to one end of the oil inlet pipeline 2; the oil outlet B1 is connected to one end of the oil supply pipeline 1, and the oil outlet B2 is connected to one end of the oil supply pipeline 2; the oil inlets on two of the ABS valves are connected to the oil supply pipeline 1 through pipelines, and the oil inlets on the remaining two ABS valves are connected to the oil supply pipeline 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, and interface 2 can be connected with interface 1 or interface 2, and interface 2 is connected with the electric control interface on the dual-way brake valve through a pipeline.

[0010] The beneficial effects of the present invention 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 according to the braking deceleration demand ratio, 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 the valve according to the speed sensor signal to realize the active braking function;

[0011] When the speed sensor signal of one tire is found to be significantly greater than the other three speed sensor signals during normal driving, the controller determines that one tire is slipping, so the controller will control the electro-hydraulic brake valve to open, and control the corresponding ABS valve opening to become larger, and the other three ASB valves to close, thereby controlling the speed of the fast tire to drop to the same 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 for automatic braking, thereby realizing the automatic parking function on the slope.

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

[0014] Based on 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 further scheme is that during the 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 according to the braking deceleration demand ratio, 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 balance 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 liquid return interfaces, and the two liquid return interfaces are respectively connected to the oil supply pipeline 1 and the oil supply pipeline 2 through pipelines; the two brake valves are also respectively provided with control interfaces, and the two control interfaces are respectively connected to the oil supply pipeline 1 and the oil supply pipeline 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 foot-operated braking by setting a control pipeline 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 which 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 scheme are simple structure and reasonable design of the number of accumulators. When the hydraulic system loses power, one of the accumulators can still provide power for braking the corresponding two ABS valves, and when the hydraulic system loses power, the other accumulator can still provide power for braking the remaining two ABS valves, thereby 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 using a two-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 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 scheme 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 handle it in time.

[0031] The invention also relates to a tractor comprising a full power braking system with ABS and drive protection functions as described above.

[0032] The beneficial effect of adopting the above further scheme is that the present invention 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 present invention;

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

[0035] Figure 3 It is a structural schematic diagram of the dual-way liquid filling valve in the present invention;

[0036] Figure 4It is a structural schematic diagram of the electro-hydraulic brake valve in the present invention;

[0037] Figure 5 It is a structural schematic diagram of the ABS valve in the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed 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. Balance line; 12. Control valve; 13. Oil return line 1; 14. Oil return line 2; 15. Accumulator; 16. Dual-way filling 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 in the embodiments may 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like 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 the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

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

[0044] Example 1

[0045] like Figures 1 to 5 As shown, this embodiment provides a full-power brake system with ABS and driving protection functions, including 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;

[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 pipeline 1 6, and the oil inlet P2 is connected to one end of the oil inlet pipeline 2 7; the oil outlet B1 is connected to one end of the oil supply pipeline 1 8, and the oil outlet B2 is connected to one end of the oil supply pipeline 2 9; the oil inlets on two of the ABS valves 4 are connected to the oil supply pipeline 1 8 through pipelines, and the oil inlets on the remaining two ABS valves 4 are connected to the oil supply pipeline 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, and the interface 2 can be connected with the interface 1 or the interface 2, and the interface 2 is connected with 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), and the electronic control unit 1 controls the electro-hydraulic brake valve 3 to open according to the braking deceleration demand 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, and the ABS valve 4 controls the opening size of its valve according to the speed sensor signal to realize the active braking function;

[0050] When it is found during normal driving that the speed sensor 5 signal of one tire is significantly greater than the other three speed sensor 5 signals, the electronic control unit 1 determines that one tire is slipping, and at this time the electronic control unit 1 controls the electro-hydraulic brake valve to open, and controls the corresponding ABS valve opening to become larger, and the other three ASB valves are closed, so as to control the rotation speed of the fast tire to drop to the same 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 for automatic braking, 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 electrical proportional valves respectively, and the opening of the valve can be controlled by controlling the current of the solenoid valve. The larger 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), the electro-hydraulic brake valve 3, the four ASB valves 4 and the 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, reasonable design, ABS and driving anti-skid functions, 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 electric control interface, and the two electric 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, and the electronic control unit 1 controls the electro-hydraulic brake valve 3 to open according to the braking deceleration demand 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, and 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 balancing interfaces communicated with their own valve cavities, and the two balancing interfaces are communicated with each other through a balancing pipeline 11.

[0065] The solution has a simple structure and a reasonable design. The balance pipe 11 is used to connect the two brake valves so that the output pressures of the two brake valves 10 are consistent, thereby 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 respectively provided with liquid return interfaces, and the two liquid return interfaces are respectively connected to the oil supply pipeline 1 8 and the oil supply pipeline 2 9 through pipelines; the two brake valves 10 are also respectively provided with control interfaces, and the two control interfaces are respectively connected to the oil supply pipeline 1 8 and the oil supply pipeline 2 9 through control pipelines, and control valves 12 are respectively fixedly installed on the two control pipelines.

[0068] The solution has a simple structure and a reasonable design, and foot-operated braking is achieved by setting a control pipeline 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] On the basis of 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] The solution has a simple structure, and the oil return pipeline 1 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 pipeline 1 6 and the oil inlet pipeline 2 7 through pipelines.

[0075] The 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 braking the corresponding two ABS valves 4, and when the hydraulic system loses power, the other accumulator 15 can still provide power for braking the remaining two ABS valves 4, thereby 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 the existing technology, 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 uses 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 which 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 may be provided, and the oil return ports on the various components are respectively connected to the corresponding oil tanks, and 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 dual-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, wherein the pressure switch 18 is connected to the two-way filling valve 16 via a pipeline, and the brake alarm 19 is connected to the pressure switch 18 via a pipeline.

[0090] The 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 sound 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 the existing technology, 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] The present embodiment also provides a tractor, which has a simple structure, a reasonable design, and is equipped with ABS and drive anti-skid functions. It also has an unmanned driving mode and can realize an automatic parking function on a slope, has multiple functions, and is easy to use.

[0096] Based on the above scheme, the above tractor mainly refers to a bending steering tractor.

[0097] The working principle of the present invention 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), and the electronic control unit 1 controls the electro-hydraulic brake valve 3 to open according to the braking deceleration demand 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, and the ABS valve 4 controls the opening size of its valve according to the speed sensor signal to realize the active braking function;

[0099] When it is found during normal driving that the speed sensor 5 signal of one tire is significantly greater than the other three speed sensor 5 signals, the electronic control unit 1 determines that one tire is slipping, and at this time the electronic control unit 1 controls the electro-hydraulic brake valve to open, and controls the corresponding ABS valve opening to become larger, and the other three ASB valves are closed, so as to control the rotation speed of the fast tire to drop to the same 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 for automatic braking, thereby realizing the automatic parking function on the slope.

[0101] It should be noted that all electronic components involved in the present invention adopt the existing technology, and the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is the existing technology.

[0102] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0103] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes 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 substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Full power brake system with ABS and driver protection function, characterized by: It 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 pipeline 1 (6), and the oil inlet P2 is connected to one end of the oil inlet pipeline 2 (7); the oil outlet B1 is connected to one end of the oil supply pipeline 1 (8), and the oil outlet B2 is connected to one end of the oil supply pipeline 2 (9); the oil inlets on two of the ABS valves (4) are connected to the oil supply pipeline 1 (8) through pipelines, and the oil inlets on the remaining two ABS valves (4) are connected to the oil supply pipeline 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, and 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) through a pipeline.

2. The full power brake 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 connected to the interface 2 through pipelines.

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

5. The full power brake 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 brake 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 pipeline 1 (6) and the oil inlet pipeline 2 (7) through pipelines.

7. The full power brake 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 one (6), and the oil outlet A2 can be communicated with the other end of the oil inlet pipeline two (7).

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

9. The full power brake 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 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.

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

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