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CN-224225046-U - Braking system and vehicle with same

CN224225046UCN 224225046 UCN224225046 UCN 224225046UCN-224225046-U

Abstract

The utility model provides a braking system and a vehicle with the same, and relates to the technical field of vehicle braking. The braking system comprises a service braking valve group, an oil supply device and a plurality of wheel brakes, wherein the wheel brakes are arranged in one-to-one correspondence with a plurality of wheels of a vehicle, the service braking valve group comprises a plurality of proportional valves, oil inlets of the proportional valves are communicated with the oil supply device, oil outlets of part of the proportional valves are communicated with part of the wheel brakes, oil outlets of the other part of the proportional valves are communicated with the other part of the wheel brakes, and all the proportional valves are controlled independently. According to the scheme, the wheel brakes are controlled through the proportional valves, the oil pressure of each wheel brake can be regulated through the accurate control of the proportional valves, so that an accurate braking effect is provided, the proportional valves control the wheel brakes, and when one wheel or a plurality of wheels of a vehicle slip simultaneously, the vehicle controller can specifically regulate the hydraulic pressure output by each proportional valve, and further the wheels are prevented from slipping.

Inventors

  • ZHOU CONG
  • LI GUANGHAN
  • ZHENG JINDUO
  • HU BIAO

Assignees

  • 易控智驾科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250513

Claims (11)

  1. 1. The braking system is characterized by comprising a service brake valve group, an oil supply device (70) and a plurality of wheel brakes, wherein the wheel brakes are arranged in one-to-one correspondence with a plurality of wheels of a vehicle, the service brake valve group comprises a plurality of proportional valves (10), oil inlets of the proportional valves (10) are communicated with the oil supply device (70), oil outlets of part of the proportional valves (10) are communicated with part of the wheel brakes, oil outlets of the other part of the proportional valves (10) are communicated with the other part of the wheel brakes, and the proportional valves (10) are independently controlled.
  2. 2. Brake system according to claim 1, characterized in that the service brake valve group further comprises an emergency proportional valve (50), which emergency proportional valve (50) is arranged in parallel with at least one of the proportional valves (10).
  3. 3. Braking system according to claim 2, characterized in that the emergency proportional valve (50) is arranged in parallel with each of the proportional valves (10).
  4. 4. The brake system according to claim 2, characterized in that the service valve group further comprises a shuttle valve (40), the two input ports of the shuttle valve (40) being in communication with the oil outlet of the emergency proportional valve (50), the oil outlet of the proportional valve (10) being in parallel with the emergency proportional valve (50), respectively, the output port of the shuttle valve (40) being in communication with the wheel brake.
  5. 5. The brake system according to any one of claims 1 to 4, wherein a plurality of wheel brakes on one axle are provided in one-to-one correspondence with a plurality of the proportional valves (10), and a plurality of wheel brakes on the left side of the vehicle are in communication with one of the proportional valves (10) and a plurality of wheel brakes on the right side of the vehicle are in communication with the other of the proportional valves (10).
  6. 6. Braking system according to claim 5, characterized in that a plurality of said proportional valves (10) comprises: The oil inlet of the first proportional valve (11) is communicated with the oil supply device (70), and the oil outlet of the first proportional valve (11) is communicated with the left middle wheel brake (22) and the left rear wheel brake (23); the oil inlet of the second proportional valve (12) is communicated with the oil supply device (70), and the oil outlet of the second proportional valve (12) is communicated with the right middle wheel brake (32) and the right rear wheel brake (33); The oil inlet of the third proportional valve (13) is communicated with the oil supply device (70), and the oil outlet of the third proportional valve (13) is communicated with the left front wheel brake (21); The oil inlet of the fourth proportional valve (14) is communicated with the oil supply device (70), and the oil outlet of the fourth proportional valve (14) is communicated with the right front wheel brake (31); The first proportional valve (11), the second proportional valve (12), the third proportional valve (13) and the fourth proportional valve (14) are electrically connected with a vehicle controller.
  7. 7. The brake system according to any one of claims 1-4, characterized in that the service valve group comprises two said proportional valves (10), one of said proportional valves (10) being in communication with a plurality of said wheel brakes on any one axle and the other of said proportional valves (10) being in communication with a plurality of said wheel brakes on the remaining plurality of said axles.
  8. 8. A brake system according to any one of claims 1-4, characterized in that a plurality of said proportional valves (10) are arranged in one-to-one correspondence with a plurality of axles, a plurality of said wheel brakes on any one axle being arranged in communication with a corresponding said proportional valve (10).
  9. 9. The brake system of any of claims 1-4, further comprising a park brake valve set comprising: A main park valve (60), the main park valve (60) having a first port communicating with the oil supply device (70), a second port communicating with the oil reservoir device (80) via an oil return line, and a main return port, the main park valve (60) having a first state communicating the first port with the second port, and a second state communicating the second port with the main return port; the emergency parking valve (62), the emergency parking valve (62) has third interface, fourth interface and emergent oil return interface, the third interface with the second interface connection of main parking valve (60), the fourth interface is connected with parking brake (61), emergent oil return interface is through return oil pipeline and oil storage device (80) intercommunication, emergent parking valve (62) have with the third interface with the third state of fourth interface intercommunication, and will the fourth interface with the fourth state of emergent oil return interface intercommunication.
  10. 10. Brake system according to claim 9, characterized in that the main parking valve (60) is a two-position three-way normally open solenoid valve and/or the emergency parking valve (62) is a two-position three-way normally closed solenoid valve.
  11. 11. A vehicle, characterized in that the vehicle comprises a brake system comprising a brake system according to any one of claims 1-10.

Description

Braking system and vehicle with same Technical Field The utility model relates to the technical field of vehicle braking, in particular to a braking system and a vehicle with the same. Background In the current mining card industry, most vehicles employ a braking system in a manual driving mode. The system mainly relies on the operation of a driver to realize the braking control of the vehicle, the driver steps on a brake pedal to realize the braking of the vehicle, the braking adjustment precision is low, and because the braking of all wheels is uniformly controlled manually, the accurate braking control of the wheels of the independent part cannot be realized when any wheel of the vehicle slips. In view of the above problems, no effective solution has been proposed at present. Disclosure of utility model The utility model mainly aims to provide a braking system and a vehicle with the same, so as to solve the problem that accurate wheel braking cannot be realized in the prior art. In order to achieve the above object, according to one aspect of the present utility model, there is provided a brake system including a service brake valve group, an oil supply device, and a plurality of wheel brakes provided in one-to-one correspondence with a plurality of wheels of a vehicle, the service brake valve group including a plurality of proportional valves, oil inlets of the proportional valves being communicated with the oil supply device, oil outlets of part of the proportional valves being communicated with part of the wheel brakes, oil outlets of the other part of the proportional valves being communicated with the other part of the wheel brakes, the proportional valves being controlled independently of each other. Optionally, the service brake valve group further comprises an emergency proportional valve, which is arranged in parallel with the at least one proportional valve. Optionally, the emergency proportional valve is arranged in parallel with each proportional valve. Optionally, the service brake valve group further comprises a shuttle valve, wherein two input interfaces of the shuttle valve are respectively communicated with the oil outlet of the emergency proportional valve and the oil outlet of the proportional valve connected in parallel with the emergency proportional valve, and the output interface of the shuttle valve is communicated with the wheel brake. Optionally, a plurality of wheel brakes on one axle are arranged in one-to-one correspondence with a plurality of proportional valves, and among the remaining plurality of wheel brakes and the remaining plurality of proportional valves, a plurality of wheel brakes on the left side of the vehicle are communicated with one of the proportional valves, and a plurality of wheel brakes on the right side of the vehicle are communicated with the other proportional valve. The multiple proportional valves comprise a first proportional valve, an oil inlet of the first proportional valve is communicated with an oil supply device, an oil outlet of the first proportional valve is communicated with a left middle wheel brake and a left rear wheel brake, an oil inlet of the second proportional valve is communicated with the oil supply device, an oil outlet of the second proportional valve is communicated with a right middle wheel brake and a right rear wheel brake, an oil inlet of the third proportional valve is communicated with the oil supply device, an oil outlet of the third proportional valve is communicated with a left front wheel brake, an oil inlet of the fourth proportional valve is communicated with the oil supply device, an oil outlet of the fourth proportional valve is communicated with a right front wheel brake, and the first proportional valve, the second proportional valve, the third proportional valve and the fourth proportional valve are all electrically connected with a vehicle controller. Optionally, the service valve set comprises two proportional valves, one of which communicates with the wheel brakes on any one axle and the other of which communicates with the wheel brakes on the other axles. Optionally, a plurality of proportional valves and a plurality of axles are arranged in a one-to-one correspondence, and a plurality of wheel brakes on any axle are all arranged in a communication manner with the corresponding proportional valves. The parking brake valve group comprises a main parking valve, an emergency parking valve and an emergency parking valve, wherein the main parking valve is provided with a first interface, a second interface and a main oil return interface, the first interface is communicated with an oil supply device, the main oil return interface is communicated with an oil storage device through an oil return pipeline, the main parking valve is provided with a first state for communicating the first interface with the second interface and a second state for communicating the second interface with the main oil return interface,