CN115489247A - Integrated wire-controlled electric chassis, working method and vehicle - Google Patents

Integrated wire-controlled electric chassis, working method and vehicle Download PDF

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Publication number
CN115489247A
CN115489247A CN202211345534.9A CN202211345534A CN115489247A CN 115489247 A CN115489247 A CN 115489247A CN 202211345534 A CN202211345534 A CN 202211345534A CN 115489247 A CN115489247 A CN 115489247A
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CN
China
Prior art keywords
steering
brake
axle
rear axle
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211345534.9A
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Chinese (zh)
Inventor
单龙
孙进
冯英达
邢继婉
孙明权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou XCMG Environment Technology Co Ltd
Original Assignee
Xuzhou XCMG Environment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuzhou XCMG Environment Technology Co Ltd filed Critical Xuzhou XCMG Environment Technology Co Ltd
Priority to CN202211345534.9A priority Critical patent/CN115489247A/en
Publication of CN115489247A publication Critical patent/CN115489247A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/003—Steerable axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/748—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on electro-magnetic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

The invention discloses an integral wire control electric chassis, comprising: the system comprises a traveling system, a braking system, a steering system, a power system, an electrical system and a hydraulic system, wherein the traveling system is a plate spring and is subjected to damping; the brake system is four-wheel oil brake, the brake system is wire control brake under the intelligent driving condition, and the electromagnetic band-type brake is used for parking; the front axle is a mechanical electric power-assisted steering axle, the rear axle is a driving hydraulic power-assisted steering axle, four-wheel steering can be realized, a power system adopts a split battery design, a battery cell is positioned in the middle of a girder, and Battery Management Systems (BMS) are positioned on two sides of a frame; the chassis of the whole machine is suspended, damped and driven comfortably, the brake-by-wire is stable and reliable, the four-wheel steering engine is flexible, the split battery pack is convenient to maintain, and seamless switching can be performed between manned driving and intelligent driving.

Description

Integrated wire control electric chassis, working method and vehicle
Technical Field
The invention relates to an integral wire control electric chassis, in particular to an integral wire control electric chassis, a working method and a vehicle.
Background
At present small-size electronic chassis, front axle load is little, is mostly mechanical steering axle, and the rear axle is the transaxle of traveling, and the braking generally adopts the stay-supported or oil braking brake hub, and this type of chassis does not have the gas circuit, does not basically have the air brake, and the parking then generally adopts manual stay-supported parking. Under the arrangement form, the front axle and the rear axle are rigidly connected with the frame, and when the vehicle runs at high speed or passes through bumpy road sections such as a speed bump and the like, the vehicle jumps obviously and the driving feeling is poor. In recent years, with the emergence of new technologies such as artificial intelligence and unmanned driving, the modification of the drive-by-wire chassis becomes a new hotspot, and the structural arrangement of the vehicle is inconvenient or even impossible for the drive-by-wire modification.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an integral type drive-by-wire electric chassis to solve the technical problems of poor damping effect, drive-by-wire, braking, steering and the like of the existing small chassis.
In order to achieve the purpose, the invention adopts the technical scheme that: an integrated drive-by-wire electric chassis comprising: traveling system, braking system, a steering system, driving system, electric system, hydraulic system, traveling system includes: the frame is arranged above the front axle and the rear axle, the frame is mounted on a suspension of the front axle through the plate spring and the damping shock absorber, the frame is mounted on the suspension of the rear axle through the plate spring, a cab is arranged at the end, close to the front axle, of the frame, the front axle is a steering axle, and the rear axle is a steering drive axle; the traveling motor is arranged on the rear axle and drives the rear axle to work;
the brake system includes: the brake comprises a pedal main cylinder, a line control main cylinder, a shuttle valve and an electromagnetic band-type brake, wherein the pedal main cylinder is arranged in a cab, and the line control main cylinder is positioned on a frame above a rear axle; the electromagnetic band-type brake is arranged on the rear axle and is driven by the same transmission shaft as the walking motor; the brake system comprises a pedal main cylinder, a drive-by-wire main cylinder, an electromagnetic band-type brake and a transmission shaft, wherein the pedal main cylinder is used for driving a vehicle with people, the drive-by-wire main cylinder is used for driving a vehicle without people, and the electromagnetic band-type brake is used for locking the transmission shaft to realize parking brake;
the power system comprises: battery main part and Battery Management System (BMS), battery main part are located in the middle of the frame, and Battery Management System (BMS) arranges in the frame side, after the whole car repacking of being convenient for, manages the maintenance to battery system.
An electrical system includes: the system comprises a complete machine controller and an intelligent driving module; the intelligent driving module is in communication connection with the whole machine controller, various sensors, radars and camera elements in the intelligent driving module acquire information to perform path planning and scene recognition, control signals are generated and transmitted to the whole machine controller, and the controller controls the working state of at least one of the walking system, the braking system and the steering system according to the received signals, so that intelligent driving, steering, braking and parking are realized.
Furthermore, in the steering system, the front axle is in mechanical electric power steering, and the rear axle is in hydraulic power steering.
Further, the hydraulic system includes: the hydraulic steering system comprises a power unit, a hydraulic valve group and a steering oil cylinder, wherein the steering oil cylinder is arranged in front of a rear axle and used for controlling hydraulic steering of the rear axle, and the power unit is connected with the steering oil cylinder through the hydraulic valve group.
Furthermore, a four-wheel steering switch is arranged in the whole machine controller.
A working method of an integrated wire-control electric chassis,
when the whole vehicle starts to drive, firstly, a four-wheel steering switch can be selected to be turned off, namely, a hydraulic valve group controls a signal of a steering oil cylinder to be turned off, a rear axle is a driving axle, steering is front wheel steering, when the whole vehicle needs to be braked, a pedal main cylinder works, no signal input of a wire control main cylinder does not work, the pedal is manually stepped to brake the four-wheel oil brake, when the vehicle is braked, an original hand brake can be pulled up, a sensor attached to the hand brake transmits an electric signal to a whole vehicle controller, the whole vehicle controller sends an instruction to an electromagnetic band-type brake, and the electromagnetic band-type brake works to directly lock the rear axle and a traveling motor to park;
when the whole machine is powered off accidentally, the electromagnetic band-type brake can directly lock the rear axle for parking braking, if a vehicle needs to be moved, a handle on the electromagnetic band-type brake can be manually opened to release locking of the rear axle, when the power is off, mechanical steering of the front axle can still be normally used, the whole machine can be moved and steered normally, accidental conditions that steering, locking and the like cannot be suddenly carried out under the condition of single hydraulic steering or electric steering power failure are avoided, and the safety of operation is improved;
when the whole machine starts intelligent driving work, the driving and steering states are the same as those of manned driving, when the whole machine needs driving braking, the pedal does not work under the action of external force, the intelligent driving module sends a braking instruction to the wire control main cylinder, and the braking oil way is controlled to brake; the parking brake has the same working principle as manned driving;
when the whole machine runs to a narrow road section and needs to steer, a four-wheel steering switch can be turned on, the front axle mechanical power steering is carried out, the steering angle is detected, meanwhile, the information is transmitted to a whole machine controller, the whole machine controller controls the power unit to work and the hydraulic valve group to work, the moving direction and the moving stroke of the hydraulic oil cylinder are controlled, the steering angles of the rear wheel and the front wheel are opposite, the turning radius is greatly reduced, and the maneuvering flexibility of the whole machine is improved; four-wheel steering can be selectively turned on or off at any time.
An integrated electric drive-by-wire vehicle, a vehicle using the integrated electric drive-by-wire chassis.
The invention has the beneficial effects that: the intelligent driving module is in communication connection with the whole machine controller, elements such as sensors, radars, cameras and the like acquire information to perform path planning and scene recognition, generate control signals to be transmitted to the whole machine controller, and the controller controls the working state of at least one of a walking system, a braking system and a steering system according to the received signals; the walking system is a plate spring and damping shock absorption; the brake system is four-wheel oil brake, the brake system is wire control brake under the intelligent driving condition, and the electromagnetic band-type brake is used for parking; the front axle is a mechanical electric power-assisted steering axle, and the rear axle is a driving hydraulic power-assisted steering axle, so that four-wheel steering can be realized; in the split battery design, a battery core is positioned in the middle of a crossbeam, and a Battery Management System (BMS) is positioned on the side surface of a frame; the chassis of the whole machine is suspended to absorb shock and is comfortable to drive, the brake-by-wire is stable and reliable, the four-wheel steering engine is flexible, the split battery pack is convenient to maintain, and seamless switching can be performed between manned driving and intelligent driving. .
Drawings
FIG. 1 is a schematic perspective view of an integrated drive-by-wire electric chassis according to the present invention;
FIG. 2 is a schematic view of a two-dimensional structure of an integrated wire-controlled electric chassis according to the present invention;
FIG. 3 is a steering state diagram of an integrated electric drive-by-wire chassis of the present invention;
FIG. 4 is a schematic view of a service brake of an integrated wire-controlled electric chassis according to the present invention;
in the figure: 1. a traveling system; 11. a frame; 12. a front axle; 13. a rear axle; 14. a traveling motor; 15. a plate spring; 16. a damping shock absorber; 2. a braking system; 21. a pedal master cylinder; 22. a master cylinder by wire; 23. a shuttle valve; 24. an electromagnetic band-type brake; 3. a steering system; 4. a power system; 41. a battery main body; 42. a battery management system; 5. an electrical system; 6. a hydraulic system; 61. a power unit; 62. a hydraulic valve bank; 63. a hydraulic cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terminology used herein in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention.
As shown in fig. 1-2, an integrated drive-by-wire electric chassis includes: the traveling system 1, braking system 2, a steering system 3, a power system 4, an electric system 5 and a hydraulic system 6, wherein the traveling system 1 comprises: the frame 11 is arranged above the front axle 12 and the rear axle 13, the frame 11 is mounted on the suspension of the front axle 12 through the plate spring 15 and the damping shock absorber 16, the mode of the plate spring 15 and the damping shock absorber 16 is adopted, and a rubber block is mounted above the plate spring 15 and is further elastically connected with the frame 11, so that the driving comfort is improved; the frame 11 is mounted on the suspension of the rear axle 13 through a plate spring 15, the end of the frame 11 close to the front axle 12 is a cab, the front axle 12 is a steering axle, and the rear axle 13 is a steering drive axle; the traveling motor 14 is mounted on the rear axle 13 and drives the rear axle 13 to work;
as shown in fig. 4, the brake system 2 includes: the brake comprises a pedal master cylinder 21, a line control master cylinder 22, a shuttle valve 23 and an electromagnetic band-type brake 24, wherein the pedal master cylinder 21 is arranged in a cab, and the line control master cylinder 22 is positioned on the frame 11 above a rear axle 13; the electromagnetic band-type brake 24 is arranged on the rear axle 13 and is driven by the same transmission shaft as the walking motor 14; the pedal master cylinder 21 is used for driving service brake with people, the line control master cylinder 22 is used for driving service brake without people, and the electromagnetic brake 24 is used for locking the transmission shaft to realize parking brake;
the power system 4 includes: the battery management system 42 (BMS) is arranged on one side of the frame 11, and is convenient for managing and maintaining the battery system after the whole vehicle is refitted.
The electrical system 5 includes: the system comprises a complete machine controller and an intelligent driving module; the intelligent driving module is in communication connection with the whole machine controller, various sensors, radars and camera elements in the intelligent driving module acquire information to perform path planning and scene recognition, control signals are generated and transmitted to the whole machine controller, and the controller controls the working state of at least one of the traveling system 1, the braking system 2 and the steering system 3 according to the received signals, so that intelligent driving, steering, braking and parking are realized.
As shown in fig. 1-2, in the steering system 3, the front axle 12 is mechanically and electrically assisted for steering, and the rear axle 13 is hydraulically assisted for steering.
The hydraulic system 6 is an action executing element of the whole machine, and mainly comprises: the hydraulic steering system comprises a power unit 61, a hydraulic valve group 62 and a steering oil cylinder, wherein the steering oil cylinder is arranged in front of a rear axle 13 and used for controlling hydraulic steering of the rear axle 13, and the power unit 61 is connected with the steering oil cylinder through the hydraulic valve group 62.
The whole machine controller is provided with a four-wheel steering switch.
A working method of an integrated wire-control electric chassis,
when the whole vehicle starts to drive, firstly, the four-wheel steering switch can be selectively turned off, namely, a signal of a steering oil cylinder controlled by a hydraulic valve group 62 is turned off, at the moment, a rear axle 13 is a driving axle, the steering is front wheel steering, namely, the middle schematic diagram position in the attached drawing 3 is shown in figure 4, when the whole vehicle needs to be braked, a pedal main cylinder 21 works, a wire control main cylinder 22 does not work without signal input, at the moment, the pedal is manually stepped to brake four-wheel oil brake, when the vehicle is braked, an original hand brake can be pulled up, a sensor attached to the hand brake transmits an electric signal to a whole vehicle controller, the whole vehicle controller sends an instruction to an electromagnetic band-type brake 24, and the electromagnetic band-type brake 24 works to directly lock the rear axle 13 and a traveling motor 14 for parking;
when the whole machine is powered off unexpectedly, the electromagnetic band-type brake 24 can directly lock the rear axle 13 for parking braking, if a vehicle needs to be moved, the handle on the electromagnetic band-type brake 24 can be manually opened to release the locking of the rear axle 13, when the power is off, the mechanical steering of the front axle 12 can still be normally used, the whole machine can be normally moved and steered, the unexpected situations that the steering cannot be suddenly carried out, the locking cannot be carried out and the like under the condition of power failure of single hydraulic steering or electric steering are avoided, and the safety of operation is improved;
when the whole machine starts intelligent driving, the driving and steering states are the same as those of manned driving, when the whole machine needs driving braking, the pedal does not work without external force, and the intelligent driving module sends a braking instruction to the wire-controlled main cylinder 22 to control a braking oil path to brake; the parking brake has the same working principle as manned driving;
when the whole machine starts intelligent driving work, the driving and steering states are the same as those of manned driving, as shown in fig. 4, when the whole machine needs service braking, the pedal does not work under the action of external force, and the intelligent driving module sends a braking instruction to the line-control main cylinder 22 to control a braking oil circuit to brake; the parking brake has the same working principle as manned driving;
when the whole machine runs to a narrow road section and needs to steer, a four-wheel steering switch can be turned on, the front axle 12 is subjected to mechanical electric power steering, the steering angle is detected and simultaneously the information is transmitted to a whole machine controller, the whole machine controller controls the power unit 61 to work and the hydraulic valve bank 62 to work, the moving direction and the moving stroke of the hydraulic oil cylinder 63 are controlled, the steering angles of the rear wheel and the front wheel are opposite, as shown in the right side diagram of fig. 3, the turning radius is greatly reduced, and the maneuvering flexibility of the whole machine is improved; four-wheel steering may be selectively turned on or off at any time.
The brake-by-wire and the electromagnetic band-type brake are stable and reliable in parking, four-wheel steering is flexible, the split battery pack is convenient and fast to maintain, and seamless switching can be achieved between manned driving and intelligent driving.
An integrated drive-by-wire electric vehicle is a vehicle using the integrated drive-by-wire electric chassis.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (6)

1. An integrated drive-by-wire electric chassis comprising: traveling system, braking system, a steering system, driving system, electric system, hydraulic system, its characterized in that: the walking system comprises: the frame is arranged above the front axle and the rear axle, the frame is mounted on a suspension of the front axle through the plate spring and the damping damper, the frame is mounted on the suspension of the rear axle through the plate spring, the end, close to the front axle, of the frame is a cab, the front axle is a steering axle, and the rear axle is a steering drive axle; the traveling motor is arranged on the rear axle and drives the rear axle to work;
the brake system includes: the brake comprises a pedal main cylinder, a line control main cylinder, a shuttle valve and an electromagnetic band-type brake, wherein the pedal main cylinder is arranged in a cab, and the line control main cylinder is positioned on a frame above a rear axle; the electromagnetic band-type brake is arranged on the rear axle and is driven by the same transmission shaft as the walking motor; the brake system comprises a pedal main cylinder, a drive-by-wire main cylinder, an electromagnetic band-type brake and a transmission shaft, wherein the pedal main cylinder is used for driving a vehicle with people, the drive-by-wire main cylinder is used for driving a vehicle without people, and the electromagnetic band-type brake is used for locking the transmission shaft to realize parking brake;
the power system comprises: the battery management system comprises a battery main body and a Battery Management System (BMS), wherein the battery main body is positioned in the middle of the frame, and the Battery Management System (BMS) is arranged on the side surface of the frame;
an electrical system includes: the system comprises a complete machine controller and an intelligent driving module; the intelligent driving module is in communication connection with the whole machine controller, all sensors, radars and camera elements in the intelligent driving module acquire information for path planning and scene recognition, control signals are generated and transmitted to the whole machine controller, and the controller controls the working state of at least one of the walking system, the braking system and the steering system according to the received signals, so that intelligent driving, steering, braking and parking are realized.
2. An integrated drive-by-wire motor-driven chassis according to claim 1, wherein: in the steering system, the front axle is used for mechanical electric power steering, and the rear axle is used for hydraulic power steering.
3. The integrated drive-by-wire electric chassis of claim 2, wherein: the hydraulic system includes: the hydraulic steering system comprises a power unit, a hydraulic valve group and a steering oil cylinder, wherein the steering oil cylinder is arranged in front of a rear axle and used for controlling hydraulic steering of the rear axle, and the power unit is connected with the steering oil cylinder through the hydraulic valve group.
4. An integrated drive-by-wire motor-driven chassis according to claim 3, wherein: the whole machine controller is provided with a four-wheel steering switch.
5. The method of operating an integrated drive-by-wire electric chassis of claim 4, wherein:
when the whole vehicle starts to drive, firstly, a four-wheel steering switch can be selected to be turned off, namely, a hydraulic valve group controls a signal of a steering oil cylinder to be turned off, a rear axle is a driving axle, steering is front wheel steering, when the whole vehicle needs to be braked, a pedal main cylinder works, no signal input of a wire control main cylinder does not work, the pedal is manually stepped to brake the four-wheel oil brake, when the vehicle is braked, an original hand brake can be pulled up, a sensor attached to the hand brake transmits an electric signal to a whole vehicle controller, the whole vehicle controller sends an instruction to an electromagnetic band-type brake, and the electromagnetic band-type brake works to directly lock the rear axle and a traveling motor to park;
when the whole machine is powered off unexpectedly, the electromagnetic band-type brake can directly lock the rear axle for parking braking, if a vehicle needs to be moved, the handle on the electromagnetic band-type brake can be manually opened to release the locking of the rear axle, when the power is off, the mechanical steering of the front axle can still be normally used, the whole machine can be normally moved and steered, the unexpected situations that the steering and the locking cannot be suddenly carried out under the condition of single hydraulic steering or electric steering power failure are avoided, and the operation safety is improved;
when the whole machine starts intelligent driving work, the driving and steering states are the same as those of manned driving, when the whole machine needs driving braking, the pedal does not work under the action of external force, the intelligent driving module sends a braking instruction to the wire control main cylinder, and the braking oil way is controlled to brake; the parking brake has the same working principle as manned driving;
when the whole machine runs to a narrow road section and needs to steer, a four-wheel steering switch can be turned on, the front axle mechanical power steering is carried out, the steering angle is detected, meanwhile, the information is transmitted to a whole machine controller, the whole machine controller controls the power unit to work and the hydraulic valve group to work, the moving direction and the moving stroke of the hydraulic oil cylinder are controlled, the steering angles of the rear wheel and the front wheel are opposite, the turning radius is greatly reduced, and the maneuvering flexibility of the whole machine is improved; four-wheel steering can be selectively turned on or off at any time.
6. An integrated by-wire electric vehicle characterized by: a vehicle employing the integrated electric by wire chassis of claim 1.
CN202211345534.9A 2022-10-31 2022-10-31 Integrated wire-controlled electric chassis, working method and vehicle Pending CN115489247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211345534.9A CN115489247A (en) 2022-10-31 2022-10-31 Integrated wire-controlled electric chassis, working method and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211345534.9A CN115489247A (en) 2022-10-31 2022-10-31 Integrated wire-controlled electric chassis, working method and vehicle

Publications (1)

Publication Number Publication Date
CN115489247A true CN115489247A (en) 2022-12-20

Family

ID=85114653

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211345534.9A Pending CN115489247A (en) 2022-10-31 2022-10-31 Integrated wire-controlled electric chassis, working method and vehicle

Country Status (1)

Country Link
CN (1) CN115489247A (en)

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