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CN-121989893-A - Control valve group and vehicle

CN121989893ACN 121989893 ACN121989893 ACN 121989893ACN-121989893-A

Abstract

The application provides a control valve group and a vehicle, wherein the control valve group comprises a pressure reducing module, a first proportional valve, a second proportional valve and a controller, wherein an oil inlet end of the pressure reducing module is used for being connected with hydraulic oil, the first proportional valve is arranged between an oil outlet end of the pressure reducing module and a first braking cavity of a first side driving wheel and is used for adjusting oil pressure of the first braking cavity, the second proportional valve is arranged between the oil outlet end of the pressure reducing module and a second braking cavity of a second side driving wheel and is used for adjusting oil pressure of the second braking cavity, the controller is electrically connected with the first proportional valve and the second proportional valve and is used for acquiring first rotating speed of the first side driving wheel and second rotating speed of the second side driving wheel, and controlling the first proportional valve and the second proportional valve according to the first rotating speed and the second rotating speed, so that the difference value between the first rotating speed and the second rotating speed is smaller than a preset differential threshold value. The control valve group can promote the flexibility and the suitability of antiskid control.

Inventors

  • Miao Hengxin
  • CHANG YAN
  • MIAO LIYE

Assignees

  • 三一重型装备有限公司
  • 三一智能装备有限公司

Dates

Publication Date
20260508
Application Date
20260326

Claims (10)

  1. 1. A control valve bank for a mining vehicle, the mining vehicle including a first side drive wheel and a second side drive wheel, the control valve bank comprising: the oil inlet end of the pressure reducing module is used for accessing hydraulic oil; the first proportional valve is arranged between the oil outlet end of the pressure reducing module and the first braking cavity of the first side driving wheel and is used for adjusting the oil pressure of the first braking cavity; the second proportional valve is arranged between the oil outlet end of the pressure reducing module and a second braking cavity of the second side driving wheel and is used for adjusting the oil pressure of the second braking cavity; the controller is electrically connected with the first proportional valve and the second proportional valve, and is used for acquiring a first rotating speed of the first side driving wheel and a second rotating speed of the second side driving wheel, controlling the first proportional valve and the second proportional valve according to the first rotating speed and the second rotating speed, and reducing one of the first rotating speed and the second rotating speed with a larger value so that the difference value between the first rotating speed and the second rotating speed is smaller than a preset differential threshold.
  2. 2. The control valve set of claim 1, wherein the pressure relief module comprises: The first switch valve is electrically connected with the controller, and the oil inlet end of the first switch valve is used for accessing hydraulic oil; The second pressure reducing valve is connected to the oil outlet end of the first switch valve.
  3. 3. The control valve group of claim 2, further comprising: the oil inlet end of the first one-way valve is used for accessing hydraulic oil, and the oil outlet end of the first one-way valve is connected with the first switch valve.
  4. 4. The control valve set of claim 3, wherein the mining vehicle further comprises a foot valve, the control valve set further comprising: The oil inlet end of the second one-way valve is used for accessing hydraulic oil; The oil inlet end of the third pressure reducing valve is connected with the oil outlet end of the second one-way valve; The second switch valve is electrically connected with the controller, and the oil inlet end of the second switch valve is connected with the oil outlet end of the third pressure reducing valve; The pilot reversing valve is electrically connected with the controller, the first oil outlet end of the second switching valve is connected with the oil inlet end of the pilot reversing valve, and the oil outlet end of the pilot reversing valve is used for supplying oil to the pilot port of the foot valve.
  5. 5. The control valve set of claim 4, wherein the mining vehicle further comprises a driven wheel, the control valve set further comprising: The third switch valve is electrically connected with the controller, the oil inlet end of the third switch valve is used for being connected with the oil outlet of the foot valve, and the oil outlet end of the third switch valve is used for being connected with the driven wheel parking brake cavity.
  6. 6. The control valve set as recited in claim 4, further comprising: and the oil inlet end of the overflow valve is connected with the oil outlet end of the third pressure reducing valve.
  7. 7. The control valve assembly of claim 4, wherein the mining vehicle further comprises a brake handle, the control valve assembly further comprising: the oil inlet end of the fifth pressure reducing valve is used for accessing hydraulic oil; The oil inlet end of the third proportional valve is connected with the oil outlet end of the fifth pressure reducing valve, and the oil outlet end of the third proportional valve is communicated with the first braking cavity and the second braking cavity; The third proportional valve is used for adjusting the oil pressure output to the first braking cavity and the second braking cavity according to the position signal of the braking handle.
  8. 8. The control valve assembly of claim 4, wherein the second switching valve is a two-position four-way solenoid valve, a second oil outlet end of the second switching valve is communicated to a first parking brake cavity of the first side driving wheel and a second parking brake cavity of the second side driving wheel, and on-off reversing is controlled by a controller; And under the condition that the second switch valve is powered off, the second oil outlet end is conducted.
  9. 9. The control valve set as recited in claim 4, further comprising: The filter is connected in series between the oil outlet end of the third pressure reducing valve and the oil inlet end of the second switching valve.
  10. 10. A vehicle, characterized by comprising: A control valve assembly as claimed in any one of claims 1 to 9.

Description

Control valve group and vehicle Technical Field The application relates to the technical field of mining vehicles, in particular to a control valve group and a vehicle. Background The mining truck works on muddy, soft and other low-adhesion roads more, and is easy to cause the conditions of overlarge rotation speed difference of driving wheels, skidding, sideslip and the like, and the hydraulic braking antiskid system is an important matching device for guaranteeing the running safety of the mining truck. The existing mining truck mostly adopts a locking differential mechanism to realize skid resistance by matching with a conventional hydraulic braking component, and the rotation speed of a driving wheel is restrained by means of mechanical locking, so that the applicable working condition is limited, and the mining truck can only adapt to a specific driving scene. The mechanical locking structure has a single working mode, cannot adapt to dynamic road condition adjustment, is easy to aggravate tire abrasion in the use process, is easy to cause the vehicle transmission system to bear additional load, causes component damage, is difficult to adapt to the multi-scene driving requirements such as vehicle steering and the like, and has insufficient flexibility and adaptability of anti-skid control. Disclosure of Invention The present application aims to solve at least one of the technical problems existing in the prior art or related art. In view of this, a first aspect of the present application provides a control valve assembly for use with a mining vehicle, the mining vehicle including a first side drive wheel and a second side drive wheel, the control valve assembly comprising: The oil inlet end of the pressure reducing module is used for accessing hydraulic oil; The first proportional valve is arranged between the oil outlet end of the pressure reducing module and the first braking cavity of the first side driving wheel and is used for adjusting the oil pressure of the first braking cavity; The second proportional valve is arranged between the oil outlet end of the pressure reducing module and the second braking cavity of the second side driving wheel and is used for adjusting the oil pressure of the second braking cavity; The controller is used for acquiring a first rotating speed of the first side driving wheel and a second rotating speed of the second side driving wheel, controlling the first proportional valve and the second proportional valve according to the first rotating speed and the second rotating speed, and reducing one of the first rotating speed and the second rotating speed with larger numerical value so that the difference value between the first rotating speed and the second rotating speed is smaller than a preset differential threshold value. In the technical scheme, the pressure reducing module supplies stable hydraulic oil for the first proportional valve and the second proportional valve, and the controller acquires the first rotating speed of the first side driving wheel and the second rotating speed of the second side driving wheel in real time and pertinently adjusts the opening of the corresponding first proportional valve or second proportional valve; in practical application, if the single-side driving wheel is in idle slip and the rotating speed is abnormally high, the vehicle sideslip and tail flick are easily caused by overlarge rotating speed difference of two sides, at the moment, the opening of a corresponding first proportional valve or a corresponding second proportional valve is regulated, the oil pressure of a corresponding first braking cavity or a corresponding second braking cavity is increased, the braking resistance of the driving wheel at the side with the overlarge rotating speed is increased, the rotating speed of the driving wheel at the side is forced to be reduced, the first rotating speed and the second rotating speed are quickly leveled, the overlarge rotating speed difference is eliminated, meanwhile, the first brake and the second brake are subjected to pressurization, pressure maintaining and depressurization state switching, the braking pressure of the driving wheel at the skidding side is accurately regulated and controlled until the difference value between the first rotating speed and the second rotating speed is smaller than a preset differential threshold value, the vehicle sideslip is fundamentally avoided to realize the active sideslip prevention of the mining vehicle, the limitation of the traditional mechanical locking antiskid is broken, the flexible antiskid differential control of a plurality of mine vehicles is realized, the problem of invalid torque output is forced to be reduced, the tire abnormal abrasion is relieved, the damage of a transmission system is reduced, the instant energy consumption is reduced, the flexible mud is adapted, the flexible, the attachment is reduced, the mining area is prevented from being complicated, and the m