CN206691189U

CN206691189U - A kind of line traffic control hydraulic braking steering

Info

Publication number: CN206691189U
Application number: CN201720469587.XU
Authority: CN
Inventors: 李静; 刘鹏; 王晨
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2017-05-02
Filing date: 2017-05-02
Publication date: 2017-12-01
Anticipated expiration: 2027-05-02

Abstract

The utility model discloses a kind of line traffic control hydraulic braking steering, overcoming existing brake-by-wire and steering, individually arrangement accounts for that volume is big, integrated low and be unfavorable for integrated control and existing brake-by-wire and steering when system cut-off fails the problem of less stable, and the system includes hydraulic power source part, knuckle section, brake portion and electric control part；Hydraulic power source part includes hydraulic pump, the first check valve, the second check valve and the 8th normally closed solenoid valve；Knuckle section includes the first normally closed solenoid valve and the first high-speed switch valve；Brake portion includes the second high-speed switch valve and the 7th normally closed solenoid valve；Hydraulic power source part is connected by the 8th normally closed solenoid valve, the first check valve, the first normally closed solenoid valve with the first high-speed switch valve and knuckle section pipeline；Hydraulic power source part is connected by hydraulic pump, the second check valve, the second high-speed switch valve with the 7th normally closed solenoid valve and brake portion pipeline；Electric control part and hydraulic power source part, knuckle section and brake portion electric wire connect.

Description

A kind of line traffic control hydraulic braking steering

Technical field

The utility model creates a kind of transfer for belonging to automobile brake steering technical field.More specifically, It the utility model is related to a kind of line traffic control hydraulic braking steering.

Background technology

The brakes and steering of automobile are the important components in running car system, wherein brakes Function be to make car deceleration in traveling or even the car speed travelled in descending that stops and make keeps stable, steering Function be according to driver wish control automobile travel direction.The brakes of initial automobile is filled using vacuum servo To put, its shortcoming is that volume is larger, structure is complex, and braking pressure control big to engine degree of dependence is inaccurate, due to Disadvantage mentioned above, the use of vacuum booster unit is reduced in automobile industry at present.Traditional automobile steering system is divided into machine Tool formula steering and dynamical type steering, dynamical type steering energy required when working, only sub-fraction is by driving The person of sailing provides, most of to be provided by hydraulic coupling or motor torque, more laborsaving, so using relatively broad.

Above-mentioned Conventional braking systems and conventional steering system, due to its widely used mechanical connecting structure, it is impossible to Meet the needs of active brake and active steering when automobile intelligent drives, in order to meet the demand, brake-by-wire turns with line traffic control To concept by it has been proposed that.Due to line control brake system, use electrically connects or hydraulic circuit is connected generation with wire-controlled steering system Traditional braking and the mechanical connection turned to have been replaced, the full decoupling of manipulation device and performs device has been realized, greatlys save arrangement The volume of traditional mechanical structure.Coordinate controlling party because line control brake system and wire-controlled steering system can use in control Formula, so line control brake system can be entered with wire-controlled steering system by the way that the two is integrated into a brake-by-wire steering One step reduces the cumulative volume both it, realizes the Highgrade integration of automobile chassis, and current line control brake system turns with line traffic control This step is not reached to system.

Such as China Patent Publication No. is CN105128929A, data of publication of application is on December 09th, 2015, patent of invention Entitled " a kind of intelligent line traffic control electric hydraulic steering system ", the patent of invention discloses a kind of electro-hydraulic steering system of intelligent line traffic control System and its control method, it can be realized the road feel simulation of driver by road feel motor, pass through steering motor and fluid-link steering Device collective effect, which is realized, to be turned to.Such as China Patent Publication No. is CN103303281A, publication date is September in 2013 18, Entitled " the integrated line control brake system " of patented invention-creation, the patent of invention disclose a kind of integrated line control brake system, The system can utilize the structure of motor and pump to give master cylinder fast run-up pressure, so that realizing the braking of each wheel cylinder.From above-mentioned Two patents can be seen that current line control brake system and still need independent arrangement with wire-controlled steering system, its shared space It is larger, it is unfavorable for the integrated of automobile chassis.

The content of the invention

Technical problem to be solved in the utility model is to overcome existing line control brake system and wire-controlled steering system Individually arrange the shared volume brought it is larger, it is integrated relatively low and be unfavorable for integrated control and existing line control brake system with Wire-controlled steering system is when system cut-off fails the problem of less stable, there is provided a kind of line traffic control hydraulic braking steering.

In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：A kind of described line traffic control Hydraulic braking steering includes hydraulic power source part, knuckle section, brake portion and electric control part；

Described hydraulic power source part includes hydraulic pump, the first check valve, the second check valve and the 8th normally closed solenoid valve；

Described knuckle section includes the first normally closed solenoid valve and the first high-speed switch valve；

Described brake portion includes the second high-speed switch valve and the 7th normally closed solenoid valve；

Described hydraulic power source part is high by the 8th normally closed solenoid valve, the first check valve, the first normally closed solenoid valve and first Fast switch valve is simultaneously connected using fluid pressure line with knuckle section；Hydraulic power source part passes through hydraulic pump, the second check valve, second high Fast switch valve is connected with the 7th normally closed solenoid valve and using fluid pressure line and brake portion (C)；Electric control part is respectively and hydraulic pressure Source part, knuckle section and brake portion electric wire connect.

Hydraulic power source part described in technical scheme passes through the 8th normally closed solenoid valve, the first check valve, the first normally closed electromagnetism Valve is connected with the first high-speed switch valve and use fluid pressure line and knuckle section and referred to：The 8th in described hydraulic power source part The Single port of normally closed solenoid valve is connected using fluid pressure line with the Single port of the first normally closed solenoid valve in knuckle section, hydraulic power source The oil-out of the first check valve in part is connected using the Single port of fluid pressure line and the first high-speed switch valve in knuckle section Connect.

Described hydraulic power source part passes through hydraulic pump, the second check valve, the second high-speed switch valve and the 7th normally closed solenoid valve And it is connected using fluid pressure line with brake portion and is referred to：The oil inlet of hydraulic pump in described hydraulic power source part uses hydraulic pressure Pipeline is connected with the Single port of the 7th normally closed solenoid valve in brake portion, the oil-out of the second check valve in hydraulic power source part It is connected using fluid pressure line with the Single port of the second high-speed switch valve in brake portion.

Hydraulic power source part described in technical scheme also includes fuel tank, overflow valve, accumulator and motor；Described is electronic The motor shaft of machine is connected with hydraulic pump input shaft end, and the oil inlet of hydraulic pump is connected using fluid pressure line with fuel tank, hydraulic pressure The oil-out of pump is unidirectional using fluid pressure line and accumulator, the oil-feed port of overflow valve, the oil inlet of the first check valve and second The oil inlet of valve is connected, and the fuel-displaced port of overflow valve is connected with fuel tank using fluid pressure line, the 8th normally closed solenoid valve it is another Single port is connected with fuel tank using fluid pressure line.

Knuckle section described in technical scheme also include steering wheel, steering spindle, corner torque sensor, gear, rack, Simulate master cylinder, the second normally closed solenoid valve, the first normally open solenoid valve, the second normally open solenoid valve, first pressure sensor, 3-position 4-way Magnetic valve, power cylinder, left steering wheel assembly and right turn wheel assembly；Described steering wheel is fixedly mounted on the upper of steering spindle End, gear are fixedly mounted on the lower end of steering spindle, and corner torque sensor is arranged in steering spindle, and wheel and rack engagement connects Connect, the left end of rack is fixedly connected with the right-hand member of the simulation main cylinder piston-rod in simulation master cylinder；Simulate the simulation master cylinder on master cylinder Using fluid pressure line, the Single port with the first normally closed solenoid valve, the Single port of the first normally open solenoid valve are connected first hydraulic fluid port respectively Connect, simulation master cylinder second hydraulic fluid port simulated on master cylinder uses the fluid pressure line Single port with the second normally closed solenoid valve, second respectively The Single port of normally open solenoid valve is connected；The other end of the other end of first normally closed solenoid valve and the second normally closed solenoid valve uses liquid Pressure pipe road is connected with the O port of three position four-way electromagnetic valve, and the other end of the first normally open solenoid valve uses fluid pressure line and three The P mouths of four way solenoid valve are connected, and the other end of the second normally open solenoid valve is using fluid pressure line and the O mouths of three position four-way electromagnetic valve It is connected；The P ports of described three position four-way electromagnetic valve are connected with the Single port of the first high-speed switch valve using fluid pressure line, the One pressure sensor is arranged on the fluid pressure line between the P ports of three position four-way electromagnetic valve and the first high-speed switch valve Single port On, the A ports of three position four-way electromagnetic valve are connected with the hydraulic fluid port of power cylinder first on power cylinder using fluid pressure line, and three The B ports of position four-way solenoid valve are connected with the hydraulic fluid port of power cylinder second on power cylinder using fluid pressure line；Turn to dynamic The left end of power cylinder is connected with left steering wheel assembly, and the right-hand member of power cylinder is connected with right turn wheel assembly.

Simulation master cylinder described in technical scheme includes simulation main cylinder piston-rod, simulation master cylinder first spring, simulation master cylinder Piston, simulation master cylinder second spring and simulation master cylinder body；The oil of simulation master cylinder first is provided with described simulation master cylinder body Mouth and the simulation hydraulic fluid port of master cylinder second, simulation master cylinder first hydraulic fluid port simulate the hydraulic fluid port of master cylinder second positioned at the left end for simulating master cylinder body Positioned at the right-hand member of simulation master cylinder body；The described spring of simulation master cylinder first is identical with simulation master cylinder second spring structure；It is described Simulation master cylinder piston be arranged in simulation master cylinder body, simulate between master cylinder piston and simulation master cylinder body to be slidably matched, The simulation master cylinder piston that simulation master cylinder is installed in simulation master cylinder body is divided into I chamber, II chamber from left to right；Simulate master cylinder first Spring positioned at simulation master cylinder II intracavitary and be sleeved on simulation main cylinder piston-rod on, simulate the spring of master cylinder first left and right ends according to At secondary and simulation master cylinder piston right side center connection is contacted with simulating the madial wall of master cylinder body right cylinder wall；Simulate master cylinder the Two springs are simulated at the right-hand member of master cylinder second spring and the center of simulation master cylinder piston left side positioned at I intracavitary of simulation master cylinder It is fixedly connected, the left end for simulating master cylinder second spring contacts connection with simulating the madial wall of master cylinder body left cylinder wall.

Power cylinder described in technical scheme includes power cylinder First piston bar, power cylinder piston, turned To power cylinder cylinder body and power cylinder second piston bar；Power cylinder first is provided with described power cylinder cylinder body Hydraulic fluid port and the hydraulic fluid port of power cylinder second, the hydraulic fluid port of power cylinder first are located at the left end of power cylinder cylinder body, steering power The hydraulic fluid port of cylinder second is located at the right-hand member of power cylinder cylinder body；Described power cylinder piston is arranged on power cylinder cylinder body Interior, to be slidably connected between power cylinder piston and power cylinder cylinder body, power cylinder is placed in power cylinder cylinder Power cylinder piston in body is divided into I chamber and II chamber from left to right；Described power cylinder First piston bar is positioned at steering I intracavitary of power cylinder, the right-hand member of power cylinder First piston bar and the company of fixation at the center of power cylinder piston left side Connect, and sealing ring is installed between power cylinder First piston bar and power cylinder piston and power cylinder cylinder body； Described power cylinder second piston bar is located at II intracavitary of power cylinder, the left end of power cylinder second piston bar with It is fixedly connected at the center of power cylinder piston right side, and in power cylinder second piston bar, power cylinder piston Sealing ring is installed between power cylinder cylinder body (29).

Brake portion described in technical scheme also includes the 3rd normally open solenoid valve, master cylinder, brake pedal, pedal position Displacement sensor, braking simulation master cylinder, the 4th normally open solenoid valve, the 5th normally open solenoid valve, the 6th normally open solenoid valve, the 7th normally opened electricity Magnet valve, the 3rd normally closed solenoid valve, the 4th normally closed solenoid valve, the 5th normally closed solenoid valve, the 6th normally closed solenoid valve, second pressure sensing Device, the 3rd pressure sensor, the 4th pressure sensor, the 5th pressure sensor, left front wheel cylinder, left back wheel cylinder, off-front wheel cylinder, the right side Rear wheel cylinder, the 3rd check valve and the 4th check valve.

The left end of described brake pedal and braking simulation master cylinder is hinged, and pedal displacement sensor is arranged on braking simulation master On braking simulation main cylinder piston-rod in cylinder；Braking simulation master cylinder right chamber oil-out and the 3rd normally open solenoid valve Single port, The Single port of 7th normally closed solenoid valve is respectively adopted fluid pressure line and is connected, the another port of the 3rd normally open solenoid valve and the second high speed The Single port of switch valve is connected with the hydraulic fluid port of master cylinder first on master cylinder using fluid pressure line；On described master cylinder The hydraulic fluid port of master cylinder second and the 4th normally open solenoid valve Single port, Single port, the 3rd check valve of the 5th normally open solenoid valve Fuel-displaced port be respectively adopted fluid pressure line connection；The other end of 4th normally open solenoid valve and one end of the 3rd normally closed solenoid valve Mouth, left front wheel cylinder are respectively adopted fluid pressure line and are connected；Second pressure sensor is arranged on the another port of the 4th normally open solenoid valve In fluid pressure line between left front wheel cylinder, the another port of the 5th normally open solenoid valve and one end, the left side of the 4th normally closed solenoid valve Rear wheel cylinder is connected by fluid pressure line respectively；3rd pressure sensor be arranged on the 5th normally open solenoid valve another port with it is left back In fluid pressure line between wheel cylinder, the oil inlet end of the 3rd check valve is connected with fuel tank using fluid pressure line；

The described hydraulic fluid port of master cylinder the 3rd and Single port, one end of the 7th normally open solenoid valve of the 6th normally open solenoid valve Fluid pressure line connection is respectively adopted in mouth, the fuel-displaced port of the 4th check valve；The another port and 5 constant virtues of 6th normally open solenoid valve Close the Single port of magnetic valve, off-front wheel cylinder is respectively adopted fluid pressure line and is connected；4th pressure sensor is located at the 6th normally opened electromagnetism On fluid pressure line between the another port of valve and off-front wheel cylinder, the another port of the 7th normally open solenoid valve and the 6th normally closed electromagnetism Single port, the off hind wheel cylinder of valve are respectively adopted fluid pressure line and are connected；5th pressure sensor is located at the another of the 7th normally open solenoid valve On fluid pressure line between Single port and off hind wheel cylinder, the another port of the 3rd normally closed solenoid valve, the 4th normally closed solenoid valve it is another Fluid pressure line and oil is respectively adopted in Single port, the another port of the 5th normally closed solenoid valve and the another port of the 6th normally closed solenoid valve Case is connected；The oil inlet end of 4th check valve is connected with fuel tank using fluid pressure line.

Described in technical scheme braking simulation master cylinder include braking simulation main cylinder piston-rod, braking simulation master cylinder body, Braking simulation master cylinder piston and braking simulation master cylinder spring；Described braking simulation master cylinder piston is arranged on braking simulation master cylinder cylinder In vivo, to be slidably matched between braking simulation master cylinder piston and braking simulation master cylinder body, braking simulation master cylinder is located therein Braking simulation master cylinder piston be divided into left chamber and right chamber from left to right, braking simulation main cylinder piston-rod is arranged on braking simulation master cylinder Left chamber in, braking simulation main cylinder piston-rod right-hand member with braking simulate master cylinder piston left side center at is fixedly connected, and Sealing ring is housed between braking simulation main cylinder piston-rod and braking simulation master cylinder piston and braking simulation master cylinder body；Braking simulation One end of master cylinder spring at the center of the right side of braking simulation master cylinder piston with being fixedly connected, the other end and braking simulation master cylinder It is fixedly connected at center on the inside of cylinder body right-hand member casing wall.

Master cylinder described in technical scheme includes master cylinder body, master cylinder first piston, master cylinder the One spring, master cylinder second piston and master cylinder second spring；Three hydraulic fluid ports are provided with described master cylinder body That is the hydraulic fluid port of master cylinder first, the hydraulic fluid port of master cylinder second and the hydraulic fluid port of master cylinder the 3rd, the hydraulic fluid port of master cylinder first is positioned at system The left end of dynamic master cylinder body is that the hydraulic fluid port of master cylinder second is located at master cylinder body in I chamber cylinder body of master cylinder Middle-end is in II chamber cylinder body of master cylinder, and the hydraulic fluid port of master cylinder the 3rd is located at the right-hand member of master cylinder body i.e. positioned at system In III chamber cylinder body of dynamic master cylinder；

Described master cylinder first piston, master cylinder second piston are arranged in master cylinder body, master cylinder First piston is located at the left side of master cylinder second piston, master cylinder first piston, master cylinder second piston and braking master To be slidably matched between cylinder cylinder body, master cylinder is by the master cylinder first piston in master cylinder and master cylinder second Piston is divided into I chamber, II chamber and III chamber from left to right；The described spring of master cylinder first is located at II intracavitary of master cylinder, its Left end at the center of master cylinder first piston right side with being fixedly connected, master cylinder the first spring right-hand member and master cylinder second Piston left side is fixedly connected at center, and master cylinder second spring is located at III intracavitary of master cylinder, and its left end is led with braking Cylinder second piston right side is fixedly connected at center, and its right-hand member at master cylinder body right cylinder wall medial center with being fixedly connected.

Electric control part described in technical scheme includes electronic control unit and solenoid valve controller；Electronic control unit point Other and corner torque sensor, pedal displacement sensor, first pressure sensor, second pressure sensor, the 3rd pressure sensing Device, the 4th pressure sensor, the 5th pressure sensor, motor and solenoid valve controller electric wire connect；Solenoid valve controller point Other and the first high-speed switch valve, the second high-speed switch valve, the first normally open solenoid valve, the second normally open solenoid valve, the 3rd normally opened electromagnetism Valve, the 4th normally open solenoid valve, the 5th normally open solenoid valve, the 6th normally open solenoid valve, the 7th normally open solenoid valve, the first normally closed electromagnetism Valve, the second normally closed solenoid valve, the 3rd normally closed solenoid valve, the 4th normally closed solenoid valve, the 5th normally closed solenoid valve, the 6th normally closed electromagnetism Valve, the 7th normally closed solenoid valve, the 8th normally closed solenoid valve are connected with three position four-way electromagnetic valve electric wire.

The beneficial effects of the utility model are compared with prior art：

1. a kind of line traffic control hydraulic braking steering described in the utility model is by the wire-controlled steering system in orthodox car Integrated with line control brake system, so as to form a kind of line traffic control hydraulic braking steering, due to the braking parts in the system Point the Hydraulic Elements such as a set of electric-motor pump and accumulator are shared with knuckle section, greatly reduce steering and brakes Volume, integrated level is higher, is advantageous to the arrangement of miscellaneous part on chassis.

2. a kind of line traffic control hydraulic braking steering described in the utility model realizes that brake pedal exists using spring structure The simulation of the road feel resistance of the simulation of brake force in braking procedure and steering wheel in steering procedure, be advantageous to lifting and drive Maneuverability of the member in driving.

3. a kind of line traffic control hydraulic braking steering described in the utility model is controlled by electronic control unit (ECU) Solenoid valve controller, so as to carry out PWM controls to high-speed switch valve, the accurate control to high-speed switch valve flow is realized, so as to Realize the accurate control to the brake portion in system and knuckle section, it is possible to which the brake accuracy for reaching higher is smart with turning to Degree.

4. a kind of line traffic control hydraulic braking steering described in the utility model disclosure satisfy that current ABS, TCS, ESC etc. are main The requirement of the dynamic Active Steering Technique such as braking technology and active steering, automatic parking, disclosure satisfy that following intelligent vehicle with it is electronic The needs of automobile, its application is relatively broad, and development prospect is preferable.

5. a kind of line traffic control hydraulic braking steering described in the utility model is lost when the power-off of its brake-by-wire steering During effect, all magnetic valves are because the effect of spring force revert to original position, and now driver can be realized tightly by stepping on brake pedal Braking in the case of urgency, steering in emergency circumstances is realized by rotating steering wheel, its stability is preferable.

6. a kind of line traffic control hydraulic braking steering described in the utility model is in normal work by using switch electricity Magnet valve can realize the full decoupling of brake pedal and master cylinder and the full decoupling of steering wheel and steered wheel, so that vapour The car larger impact suffered in braking and steering will not be transferred to driver with vibration, and it, which helps to alleviate, drives The tension of member, and lift comfortableness and stability of the driver in braking procedure and steering procedure.

Brief description of the drawings

The utility model is further described below in conjunction with the accompanying drawings：

Fig. 1 is a kind of structure composition schematic diagram of line traffic control hydraulic braking steering described in the utility model；

Fig. 2 is that a kind of electric control part structure composition of line traffic control hydraulic braking steering described in the utility model is illustrated Figure；

Fig. 3 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ABS is pressurized operating mode Schematic diagram；

Fig. 4 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ABS pressurize operating modes Schematic diagram；

Fig. 5 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ABS depressurizes operating mode Schematic diagram；

Fig. 6 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ESC the near front wheel lists Wheel supercharging operating mode schematic diagram；

Fig. 7 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ESC the near front wheel lists Take turns pressurize operating mode schematic diagram；

Fig. 8 is a kind of steering to the left of line traffic control hydraulic braking steering described in the utility model and ESC the near front wheel lists Wheel decompression operating mode schematic diagram；

Fig. 9 be a kind of line traffic control hydraulic braking steering described in the utility model in the case of power-off failure, turn left To and braking supercharging operating mode schematic diagram；

Figure 10 be a kind of line traffic control hydraulic braking steering described in the utility model in the case of power-off failure, turn left To and braking compression release operating mode schematic diagram；

In figure：1. steering wheel, 2. steering spindles, 3. corner torque sensors, 4. gears, 5. racks, 6. simulation master cylinder pistons Bar, the 7. simulation springs of master cylinder first, 8. simulation master cylinder pistons, 9. simulation master cylinder second springs, 10. simulation master cylinder bodies, 11. moulds Intend master cylinder, 12. first normally closed solenoid valves, 13. second normally closed solenoid valves, 14. first normally open solenoid valves, 15. second normally opened electromagnetism Valve, 16. fuel tanks, 17. overflow valves, 18. accumulators, 19. motor, 20. hydraulic pumps, 21. first check valves, 22. second is unidirectional Valve, 23. first high-speed switch valves, 24. first pressure sensors, 25. three position four-way electromagnetic valves, 26. power cylinders first are lived Stopper rod, 27. power cylinder pistons, 28. power cylinders, 29. power cylinder cylinder bodies, 30. power cylinder second pistons Bar, 31. left steering wheel assemblies, 32. right turn wheel assemblies, 33. second high-speed switch valves, 34. the 3rd normally open solenoid valves, 35. Seven normally closed solenoid valves, 36. master cylinders, 37. master cylinder bodies, 38. master cylinder first pistons, 39. master cylinders first Spring, 40. master cylinder second pistons, 41. master cylinder second springs, 42. brake pedals, 43. pedal displacement sensors, 44. braking simulation main cylinder piston-rod, 45. braking simulation master cylinder bodies, 46. braking simulation master cylinder pistons, 47. braking simulation master cylinders Spring, 48. braking simulation master cylinders, 49. the 4th normally open solenoid valves, 50. the 5th normally open solenoid valves, 51. the 6th normally open solenoid valves, 52. the 7th normally open solenoid valve, 53. the 3rd normally closed solenoid valves, 54. the 4th normally closed solenoid valves, 55. the 5th normally closed solenoid valves, 56. Six normally closed solenoid valves, 57. second pressure sensors, 58. the 3rd pressure sensors, 59. the 4th pressure sensors, 60. the 5th pressures Force snesor, 61. left front wheel cylinders, 62. left back wheel cylinders, 63. off-front wheel cylinders, 64. off hind wheel cylinders, 65. electronic control units (ECU), 66. solenoid valve controller, the 67. simulation hydraulic fluid ports of master cylinder first, the 68. simulation hydraulic fluid ports of master cylinder second, 69. power cylinders the One hydraulic fluid port, 70. the second hydraulic fluid ports of power cylinder, 71. the second hydraulic fluid ports of master cylinder, the hydraulic fluid port of 72. master cylinder the 3rd, 73. brakings The hydraulic fluid port of master cylinder first, 74. the 8th normally closed solenoid valves, 75. the 3rd check valves, 76. the 4th check valves, A. hydraulic power sources part, B. turn To part, C. brake portions, D. electric control parts.

Embodiment

The utility model is explained in detail below in conjunction with the accompanying drawings：

Show refering to Fig. 1, a kind of line traffic control hydraulic braking steering described in the utility model includes hydraulic power source part A, turned To part B, brake portion C and electric control part D.

Described hydraulic power source part A includes fuel tank 16, overflow valve 17, accumulator 18, motor 19, hydraulic pump 20, first Check valve 21, the second check valve 22 and the 8th normally closed solenoid valve 74.

The motor shaft of described motor 19 is connected with the input shaft end of hydraulic pump 20, ensures that motor 19 can be with hydrodynamic Press pump 20 rotates, and enables hydraulic pump 20 by oil-out persistently to hydraulic system output hydraulic pressure oil.The oil inlet of hydraulic pump 20 It is connected by fluid pressure line with fuel tank 16, enables hydraulic pump 20 to continue to draw hydraulic pressure from fuel tank 16 in normal work Oil.The oil-out of hydraulic pump 20 is connected using fluid pressure line with accumulator 18, and the effect of accumulator 18 is to work as the work of hydraulic pump 20 The excess energy provided from hydraulic pump 20 is provided when making and eliminates the pulse ripple in fluid pressure line, hydraulic pump 20 goes out Hydraulic fluid port is also connected with overflow valve 17, the first check valve 21 with the oil-feed port of the second check valve 22 using fluid pressure line, overflow valve 17 fuel-displaced port is connected with fuel tank 16 using fluid pressure line, and Single port and the fuel tank 16 of the 8th normally closed solenoid valve 74 use Fluid pressure line is connected.

Described knuckle section B includes steering wheel 1, steering spindle 2, corner torque sensor 3, gear 4, rack 5, simulation master Cylinder 11, the first normally closed solenoid valve 12, the second normally closed solenoid valve 13, the first normally open solenoid valve 14, the second normally open solenoid valve 15, first High-speed switch valve 23, first pressure sensor 24, three position four-way electromagnetic valve 25, power cylinder 28, left steering wheel assembly 31 with Right turn wheel assembly 32；Wherein:Power cylinder 28 includes power cylinder First piston bar 26, power cylinder piston 27, Power cylinder cylinder body 29, power cylinder second piston bar 30.

Described steering wheel 1 is fixedly mounted on the upper end of steering spindle 2, and gear 4 is fixedly mounted on the lower end of steering spindle 2, even The mode of connecing can use key, spline or other mechanical connecting structures, so as to realize that steering spindle 2 can rotate with moving gear 4, corner torque Sensor 3 is arranged in steering spindle 2, and corner torque sensor 3 uses steering wheel angle torque integrated transducer, corner torque The function of sensor 3 monitors the corner and torque value of steering wheel 1 in real time, and the real-time angular signal of steering wheel and torque are believed Number pass to electronic control unit (ECU) 65；Gear 4 engages connection, left end and the simulation main cylinder piston-rod of rack 5 with rack 5 6 right-hand member is fixedly connected, it is ensured that the power suffered by described rack 5 can be delivered on simulation main cylinder piston-rod 6, and the energy of rack 5 Simulation main cylinder piston-rod 6 is driven to carry out side-to-side movement.

Described simulation master cylinder 11 include simulation main cylinder piston-rod 6, simulation master cylinder the first spring 7, simulation master cylinder piston 8, Simulate master cylinder second spring 9 and simulation master cylinder body 10.

The left end of described simulation main cylinder piston-rod 6 connects with being fixedly connected at the center of simulation master cylinder piston 8 right side Mode can use flange connection, threaded connection or other conventional machinery attachment structures, and be led in simulation main cylinder piston-rod 6 and simulation Sealing ring is installed between cylinder piston 8 and simulation master cylinder body 10, so as to realize sealing function.

Described simulation master cylinder piston 8 is arranged in simulation master cylinder body 10, simulation master cylinder piston 8 and simulation master cylinder body To be slidably matched between 10, the simulation master cylinder piston 8 that simulation master cylinder 11 is installed in simulation master cylinder body 10 divides from left to right For I chamber, II chamber.The first spring of simulation master cylinder 7 is positioned at II intracavitary for simulating master cylinder 11 and is sleeved on simulation main cylinder piston-rod 6, Simulate the left and right ends of master cylinder the first spring 7 respectively with the center of simulation master cylinder piston 8 right side with simulation master cylinder body 10 The madial wall contact connection of right cylinder wall；I intracavitary of the master cylinder second spring 9 positioned at simulation master cylinder 11 is simulated, simulates the bullet of master cylinder second The right-hand member of spring 9 at the center of simulation master cylinder piston 8 left side with being fixedly connected, the left end and mould of simulation master cylinder second spring 9 Intend the madial wall contact connection of the left cylinder wall of master cylinder body 10.The first spring of master cylinder 7 and simulation master cylinder second spring 9 are simulated using tool There are the identical springs of same elastic characteristic, and the initial length of two springs is identical, that is, simulates the first spring of master cylinder 7 and simulation master cylinder The structure of second spring 9 is identical；So when simulating master cylinder piston 8 positioned at the centre position of simulation master cylinder 11, master cylinder first is simulated Spring 7 is equal to the amount of force for simulating master cylinder piston 8 with simulation master cylinder second spring 9, in the opposite direction.Work as motor turning When, steering wheel 1 can drive simulation master cylinder piston 8 to move by a series of mediation members, now simulate the He of the first spring of master cylinder 7 Simulation master cylinder second spring 9 can be produced corresponding spring force due to elastic deformation and hinder simulation master cylinder piston 8 to move, the obstruction Road feel simulation during steering is provided for driver on force feedback to steering wheel 1.

Two hydraulic fluid ports, which are provided with, on simulation master cylinder body 10 in described simulation master cylinder 11 simulates the hydraulic fluid port of master cylinder first 67 with simulation master cylinder the second hydraulic fluid port 68, the first hydraulic fluid port of simulation master cylinder 67 is in I chamber cylinder body of simulation master cylinder 11, simulation master cylinder the Two hydraulic fluid ports 68 are in II chamber cylinder body of simulation master cylinder 11.It is normal with first respectively by fluid pressure line to simulate master cylinder the first hydraulic fluid port 67 Close the Single port of magnetic valve 12, the Single port of the first normally open solenoid valve 14 is connected.The second hydraulic fluid port of simulation master cylinder 68 uses hydraulic pressure The Single port with the second normally closed solenoid valve 13, the Single port of the second normally open solenoid valve 15 are connected pipeline respectively；First normally closed electricity The other end of magnet valve 12 is connected using fluid pressure line with the O port of three position four-way electromagnetic valve 25, the second normally closed solenoid valve 13 The other end is connected using fluid pressure line with the O mouths of three position four-way electromagnetic valve 25, and the other end of the first normally open solenoid valve 14 uses Fluid pressure line is connected with the P mouths of three position four-way electromagnetic valve 25；The other end of second normally open solenoid valve 15 using fluid pressure line with The O mouths of three position four-way electromagnetic valve 25 are connected.

Described three position four-way electromagnetic valve 25 is three-position four-way electromagnetic directional valve, when the left end of three position four-way electromagnetic valve 25 leads to When electric, its P, O, A, B port blocks；When the right-hand member of three position four-way electromagnetic valve 25 is powered, its P port connects with A ports, O ends Mouth connects with B ports；When the equal no power in the both ends of three position four-way electromagnetic valve 25, its P port connects with B ports, O port and A ends Mouth connection.

The P ports of described three position four-way electromagnetic valve 25 and the Single port of the first high-speed switch valve 23 are connected using fluid pressure line Connect, the other end of the first high-speed switch valve 23 is connected with the port of export of the first check valve 21 using fluid pressure line.First pressure passes Sensor 24 is located on the fluid pressure line between the P ports of three position four-way electromagnetic valve 25 and one end of the first high-speed switch valve 23, its Effect is the exit pressure levels of the first high-speed switch valve 23 of real-time monitoring, and the pressure value is passed into electronic control unit (ECU)65；The O mouths of three position four-way electromagnetic valve 25 are connected with one end of the 8th normally closed solenoid valve 74.8th normally closed solenoid valve 74 The other end is connected with fuel tank 16.The A mouths of three position four-way electromagnetic valve 25 use fluid pressure line with the first hydraulic fluid port of power cylinder 69 Connection.The B mouths of three position four-way electromagnetic valve 25 are connected with the second hydraulic fluid port of power cylinder 70 using fluid pressure line.

The first described high-speed switch valve 23 is closed type high-speed switch electromagnetic valve, and it is opened in the case of energization, Closed in the case of power-off.First high-speed switch valve 23 is connected by electric connection mode with solenoid valve controller 66, Electronic Control Unit (ECU) 65 controls solenoid valve controller 66 by electric signal, and solenoid valve controller 66 is by PWM control modes, to first The input pulse width of high-speed switch valve 23 is controlled, and its pulse width is controlled by PWM, so as to control it to open and close Time, and then its flow can continuously be controlled.Because the hydraulic oil of the first high-speed switch valve 23 outflow will enter Power cylinder 28 is so as to complete motor turning campaign, so accurate control of first high-speed switch valve 23 to flow can be protected Demonstrate,prove the rapidity and accuracy when steering turns to.

Described power cylinder 28 includes power cylinder First piston bar 26, power cylinder piston 27, turns to and move Power cylinder cylinder body 29 and power cylinder second piston bar 30.

Described power cylinder piston 27 is arranged in power cylinder cylinder body 29, and power cylinder piston 27 is with turning To between power cylinder cylinder body 29 to be slidably connected, the power cylinder that power cylinder 28 is placed in power cylinder cylinder body 29 Piston 27 is divided into I, II liang of chamber from left to right.

Described power cylinder First piston bar 26 is located at I intracavitary of power cylinder 28, and power cylinder first is lived For the right-hand member of stopper rod 26 with being fixedly connected at the left side center of power cylinder piston 27, connected mode can use flange connection, spiral shell Line connects or other conventional machinery attachment structures, and in power cylinder First piston bar 26 and power cylinder piston 27 and turns Sealing ring is installed between power cylinder cylinder body 29, so as to realize sealing function.

Described power cylinder second piston bar 30 is located at II intracavitary of power cylinder 28, and power cylinder second is lived For the left end of stopper rod 30 with being fixedly connected at the right side center of power cylinder piston 27, connected mode can use flange connection, spiral shell Line connects or other conventional machinery attachment structures, and in power cylinder second piston bar 30, power cylinder piston 27 and turns To sealing ring is equipped between power cylinder cylinder body 29, so as to realize sealing function.

Two hydraulic fluid ports i.e. the first hydraulic fluid port of power cylinder 69, steering power is provided with described power cylinder cylinder body 29 The second hydraulic fluid port of cylinder 70, the first hydraulic fluid port of power cylinder 69 are located in I chamber cylinder body of power cylinder 28, the oil of power cylinder second Mouth 70 is in II chamber cylinder body of power cylinder 28.

The left end of described power cylinder First piston bar 26 is connected with left steering wheel assembly 31, makes power cylinder First piston bar 26 can drive left steering wheel to complete to turn to by the steering driving member of centre.

The right-hand member of described power cylinder second piston bar 30 is connected with right turn wheel assembly 32, makes power cylinder Second piston bar 30 can drive right turn wheel to complete to turn to by the steering driving member of centre.

Described brake portion C includes the second high-speed switch valve 33, the 3rd normally open solenoid valve 34, the 7th normally closed solenoid valve 35th, master cylinder 36, brake pedal 42, pedal displacement sensor 43, braking simulation master cylinder 48, the 4th normally open solenoid valve 49, the Five normally open solenoid valves 50, the 6th normally open solenoid valve 51, the 7th normally open solenoid valve 52, the 3rd normally closed solenoid valve 53, the 4th normally closed electricity Magnet valve 54, the 5th normally closed solenoid valve 55, the 6th normally closed solenoid valve 56, second pressure sensor 57, the 3rd pressure sensor 58, Four pressure sensors 59, the 5th pressure sensor 60, left front wheel cylinder 61, left back wheel cylinder 62, off-front wheel cylinder 63, off hind wheel cylinder 64, First check valve 76 and the second check valve 77.

Described brake pedal 42 is hinged with the braking simulation left end of main cylinder piston-rod 44, it is ensured that brake pedal 43 can drive The braking simulation side-to-side movement of main cylinder piston-rod 44, pedal displacement sensor 43 use resistance-strain type displacement transducer, pedal position Displacement sensor 43 is arranged on braking simulation main cylinder piston-rod 44, and the function of pedal displacement sensor 43 monitors brake pedal in real time 43 shift value, and the displacement signal of brake pedal 43 is passed into electronic control unit (ECU) 65.

Described braking simulation master cylinder 48 includes braking simulation main cylinder piston-rod 44, braking simulation master cylinder body 45, system Dynamic model intends master cylinder piston 46, braking simulation master cylinder spring 47.

Described braking simulation master cylinder piston 46 is arranged in braking simulation master cylinder body 45, braking simulation master cylinder piston 46 It is to be slidably matched between simulating master cylinder body 45 with braking, the braking simulation master cylinder piston that braking simulation master cylinder 48 is located therein 46 are divided into left chamber and right chamber from left to right, and wherein left chamber is cavity, does not contain hydraulic oil；To there is hydraulic fluid chamber, inside contains right chamber There is hydraulic oil.The right-hand member of braking simulation main cylinder piston-rod 44 is simulated with braking to be fixedly connected at the left side center of master cylinder piston 46, Connected mode can use flange connection, threaded connection or other conventional machinery attachment structures, and simulate main cylinder piston-rod in braking Sealing ring is housed between 44 and braking simulation master cylinder piston 46 and braking simulation master cylinder body 45, so as to realize sealing function.System Dynamic model intends one end of master cylinder spring 47 with being fixedly connected at the center of the right side of braking simulation master cylinder piston 46, the other end and system Dynamic model is intended being fixedly connected at the center on the inside of the right-hand member casing wall of master cylinder body 45.When automobile brake, driver steps on brake pedal 42, drive braking simulation master cylinder piston 46 to move by mediation member, now braking simulation master cylinder spring 47 can be produced by compression Raw elastic deformation, hinders its motion so as to produce spring force, and the obstruction power is delivered on brake pedal 42 and formed to driver's Brake pedal force feedback.

The right chamber of described braking simulation master cylinder 48 be have hydraulic fluid chamber oil-out and the 3rd normally open solenoid valve 34 one End, one end of the 7th normally closed solenoid valve 35 are respectively adopted fluid pressure line and are connected, the other end of the 3rd normally open solenoid valve 34 and braking The first hydraulic fluid port of master cylinder 73 is connected using fluid pressure line, and the other end and the fuel tank 16 of the 7th normally closed solenoid valve 35 use fluid pressure line phase Even.

Described master cylinder 36 includes master cylinder body 37, master cylinder first piston 38, the bullet of master cylinder first Spring 39, master cylinder second piston 40 and master cylinder second spring 41.

Described master cylinder first piston 38, master cylinder second piston 40 are arranged in master cylinder body 37, system Dynamic master cylinder first piston 38 is located at the left side of master cylinder second piston 40, master cylinder first piston 38, master cylinder second To be slidably matched between piston 40 and master cylinder body 37, master cylinder 36 is by the master cylinder in master cylinder 36 First piston 38 is divided into I chamber, II chamber and III chamber from left to right with master cylinder second piston 40.

Described the first spring of master cylinder 39 is located at II intracavitary of master cylinder 36, and its left end is lived with master cylinder first Fill in and be fixedly connected at 38 right side centers, the right-hand member of the first spring of master cylinder 39 and the left side center of master cylinder second piston 40 Place is fixedly connected, and master cylinder second spring 41 is located at III intracavitary of master cylinder 36, its left end and master cylinder second piston It is fixedly connected at 40 right sides center, its right-hand member at the right cylinder wall medial center of master cylinder body 37 with being fixedly connected.

Three hydraulic fluid ports i.e. the first hydraulic fluid port of master cylinder 73, master cylinder second is provided with described master cylinder body 37 Hydraulic fluid port 71 and the hydraulic fluid port 72 of master cylinder the 3rd, the first hydraulic fluid port of master cylinder 73 are located at the left end of master cylinder body 37 i.e. positioned at system In I chamber cylinder body of dynamic master cylinder 36, the middle-end that the second hydraulic fluid port of master cylinder 71 is located at master cylinder body 37 is located at master cylinder In 36 II chamber cylinder body, the right-hand member that the hydraulic fluid port 72 of master cylinder the 3rd is located at master cylinder body 37 is positioned at the III of master cylinder 36 In chamber cylinder body.

Described the first hydraulic fluid port of master cylinder 73 is connected with the Single port of the second high-speed switch valve 33 using fluid pressure line, The other end of second high-speed switch valve 33 is connected with the oil-out of the second check valve 22 using fluid pressure line.Second speed-sensitive switch Valve 33 is closed type high-speed switch electromagnetic valve, and it is opened in the case of energization, is closed in the event of a power failure.Second high speed is opened Close valve 33 by electric connection mode with solenoid valve controller 66 to be connected, electronic control unit (ECU) 65 controls electricity by electric signal Magnetic valve controller 66, solenoid valve controller 66 are entered by PWM control modes to the input pulse width of the second high-speed switch valve 33 Row control, its pulse width is controlled by PWM, so as to control it to open the time with closing, and then its flow can be carried out Continuous control.Because the hydraulic oil of the second high-speed switch valve 33 outflow will enter I chamber of master cylinder 36, so as to promote braking Master cylinder first piston 38 moves right with master cylinder second piston 40, realizes that II, III chamber of master cylinder 36 builds pressure, so as to The braking of automobile is realized, so when accurate control of second high-speed switch valve 33 to flow can ensure brake system Rapidity and accuracy.

Described master cylinder the second hydraulic fluid port 71 and one end of the 4th normally open solenoid valve 49, the one of the 5th normally open solenoid valve 50 Fluid pressure line connection is respectively adopted in end, the oil outlet end of the 3rd check valve 75；The other end of 4th normally open solenoid valve 49 and the 3rd normal Close one end of magnetic valve 53, left front wheel cylinder 61 is connected by fluid pressure line respectively；Second pressure sensor 57 is normally opened positioned at the 4th In fluid pressure line between the other end of magnetic valve 49 and left front wheel cylinder 61, it is the pressure for monitoring left front wheel cylinder 61 in real time that it, which is acted on, Value, it is ensured that brake pressure precision.The other end of 5th normally open solenoid valve 50 and one end, the left back wheel cylinder of the 4th normally closed solenoid valve 54 62 are connected by fluid pressure line respectively；3rd pressure sensor 58 is located at the other end of the 5th normally open solenoid valve 50 and left back wheel cylinder In fluid pressure line between 62, it is the pressure value for monitoring left back wheel cylinder 62 in real time that it, which is acted on, it is ensured that brake pressure precision, the 3rd is single Connected between oil inlet end and fuel tank 16 to valve 75 using fluid pressure line.

The described hydraulic fluid port 72 of master cylinder the 3rd and one end of the 6th normally open solenoid valve 51, the one of the 7th normally open solenoid valve 52 Fluid pressure line connection is respectively adopted in end, the oil outlet end of the 4th check valve 76；The other end of 6th normally open solenoid valve 51 and 5 constant virtues Close one end of magnetic valve 55, off-front wheel cylinder 63 is respectively adopted fluid pressure line and is connected；4th pressure sensor 59 is normally opened positioned at the 6th In fluid pressure line between the other end and off-front wheel cylinder 63 of magnetic valve 51, it is the real-time pressure for monitoring off-front wheel cylinder 63 that it, which is acted on, Value, it is ensured that brake pressure precision.The other end of 7th normally open solenoid valve 52 and one end, the off hind wheel cylinder of the 6th normally closed solenoid valve 56 64, which are respectively adopted fluid pressure line, is connected；5th pressure sensor 60 is located at the other end and off hind wheel cylinder of the 7th normally open solenoid valve 52 In fluid pressure line between 64, it is the real-time pressure value for monitoring off hind wheel cylinder 64 that it, which is acted on, it is ensured that brake pressure precision.4th is single Connected between oil inlet end and fuel tank 16 to valve 76 using fluid pressure line.It is the other end of 3rd normally closed solenoid valve 53, the 4th normally closed The other end of the other end of magnetic valve 54, the other end of the 5th normally closed solenoid valve 55 and the 6th normally closed solenoid valve 56 passes through liquid respectively Pressure pipe road is connected with fuel tank 16.

Refering to Fig. 2, described electric control part D includes electronic control unit (ECU) 65 and solenoid valve controller 66.Electronics The EDC7 series of products that control unit (ECU) 65 is produced using BOSCH companies, the correspondence on electronic control unit (ECU) 65 Function terminals pass with corner torque sensor 3, pedal displacement sensor 43, first pressure sensor 24, second pressure respectively Sensor 57, the 3rd pressure sensor 58, the 4th pressure sensor 59, the 5th pressure sensor 60, motor 19 and magnetic valve control Respective terminal electric wire connection on device 66 processed.Corresponding function terminals on solenoid valve controller 66 are opened with the first high speed respectively Close valve 23, the second high-speed switch valve 33, the first normally open solenoid valve 14, the second normally open solenoid valve 15, the 3rd normally open solenoid valve 34, 4th normally open solenoid valve 49, the 5th normally open solenoid valve 50, the 6th normally open solenoid valve 51, the 7th normally open solenoid valve 52, first are normally closed Magnetic valve 12, the second normally closed solenoid valve 13, the 3rd normally closed solenoid valve 53, the 4th normally closed solenoid valve 54, the 5th normally closed solenoid valve 55, 6th normally closed solenoid valve 56, the 7th normally closed solenoid valve 35, the 8th normally closed solenoid valve 74 are corresponding on three position four-way electromagnetic valve 25 Electromagnet terminals electric wire connects.

Principle and the course of work of the present utility model are as follows：

1. turn to the left and ABS is pressurized operating mode

(1) steering procedure：

Refering to Fig. 3, when driver turns left steering wheel 1, the corner torque sensor 3 in steering spindle 2 detects Corner and torque to steering wheel, and send angular signal and dtc signal to electronic control unit (ECU) 65, Electronic Control Unit (ECU) 65 performs order by calculating analysis to motor 19 and the transmission of solenoid valve controller 66.

Solenoid valve controller 66 controls the first normally closed solenoid valve 12, the second normally closed solenoid valve 13, the 7th normally closed solenoid valve 35, 8th normally closed solenoid valve 74 is powered and is in open mode；First normally open solenoid valve 14, the second normally open solenoid valve 15, the 3rd normally opened electricity Magnet valve 34 is powered and is closed；First high-speed switch valve 23, the second high-speed switch valve 33 are powered and are in open mode；Remaining Magnetic valve is in the initial position of power-off.

Steering spindle 2 rotates with steering wheel 1, and is rotated with moving gear 4, because gear 4 and rack 5 keep engagement, Rack-and-pinion is formed, the rotary motion of gear 4 can be converted to the linear motion to the left of rack 5.Due to the left end of rack 5 with The simulation right-hand member of main cylinder piston-rod 6 is connected, therefore the motion of rack 5 can be transferred to simulation main cylinder piston-rod 6, makes the latter keep transporting to the left It is dynamic.Simulation main cylinder piston-rod 6 drives simulation master cylinder piston 8 to left movement again.Because I, II liang of chamber for now simulating master cylinder 11 is equal It is joined directly together with fuel tank 16, so simulation master cylinder piston 8 will not run into flowed friction when being moved to the left in simulating master cylinder 11.This When, the first spring of simulation master cylinder 7 and simulation master cylinder second spring 9 can be produced corresponding spring force due to elastic deformation and hinder mould Intend master cylinder piston 8 to move, road feel when providing for driver steering in the obstruction force feedback to steering wheel 1 is simulated.

Meanwhile motor 19 is in normal operating conditions, hydraulic pump 20 is driven to rotate, 20 external output hydraulic pressure of hydraulic pump Oil, accumulator 18 and overflow valve 17 are connected at the oil-out of hydraulic pump 20.Wherein, the effect of accumulator 18 is to work as hydraulic pump 20 The excess energy provided from hydraulic pump 20 is provided during work, and eliminates the pulse ripple in fluid pressure line；Overflow valve 17 fills When safety valve uses, when the outlet pressure of hydraulic pump 20 increases severely, overflow valve 17 opens overflow, pressure value in system is in conjunction In the range of reason, ensure hydraulic system normal work.

Solenoid valve controller 66 is controlled by PWM control modes to the input pulse width of the first high-speed switch valve 23 System, its pulse width is controlled by PWM, so as to control it to open the time with closing, and then can be into power cylinder 28 flow is continuously controlled, to ensure rapidity and accuracy during steering steering.

The hydraulic oil that hydraulic pump 20 exports is by the first check valve 21, the first high-speed switch valve 23, three position four-way electromagnetic valve 25 flow into II chamber of power cylinder 28, make the increase of II cavity pressure, promote power cylinder piston 27 to be moved to the left, so as to band Dynamic power cylinder First piston bar 26 and power cylinder second piston bar 30 are moved to the left.Power cylinder First piston bar 26 can drive left steering wheel assembly 31 to complete to turn to the left by the steering driving member of centre；Power cylinder second piston bar 30 can drive right turn wheel assembly 32 to complete to turn to the left by the steering driving member of centre.

(2) braking procedure：

Refering to Fig. 3, driver, which steps on brake pedal 42, makes it produce displacement, and brake pedal 43 drives braking simulation master cylinder to live Stopper rod 44 moves right.Pedal displacement sensor 43 on braking simulation main cylinder piston-rod 44 detects brake pedal 42 Displacement, displacement signal is sent to electronic control unit (ECU) 65.

Braking simulation main cylinder piston-rod 44 promotes braking simulation master cylinder piston 46 to move right, braking simulation master cylinder piston 46 Compression brake simulation master cylinder spring 47 to the right, the now meeting of braking simulation master cylinder spring 47 produces elastic deformation by compression, so as to produce Raw spring force hinders its motion, and the obstruction power is delivered to the brake pedal force feedback formed on brake pedal 42 to driver.

Solenoid valve controller 66 is controlled by PWM control modes to the input pulse width of the second high-speed switch valve 33 System, its pulse width is controlled by PWM, so as to control it to open the time with closing, and then can be to entering master cylinder 36 I chamber flow continuously controlled, come ensure steering braking when rapidity and accuracy.

The hydraulic oil that hydraulic pump 20 exports flows into master cylinder 36 by the second check valve 22, the second high-speed switch valve 33 In I chamber, make the increase of I cavity pressure, promote master cylinder first piston 38 to move right, make the increase of II cavity pressure, promote braking master Cylinder second piston 40 moves right, and makes the increase of III cavity pressure, and II, III liang of chamber for completing master cylinder 36 builds pressure.

The hydraulic oil of II intracavitary of master cylinder 36 enters left front wheel cylinder 61 by the 4th normally open solenoid valve 49, realizes automobile The braking supercharging of the near front wheel；The hydraulic oil of II intracavitary of master cylinder 36 enters left back wheel cylinder by the 5th normally open solenoid valve 50 62, realize the braking supercharging of automobile left rear wheel；The hydraulic oil of III intracavitary of master cylinder 36 enters by the 6th normally open solenoid valve 51 Enter off-front wheel cylinder 63, realize the supercharging of automobile off-front wheel cylinder；The hydraulic oil of III intracavitary of master cylinder 36 passes through the 7th normally opened electricity Magnet valve 52 enters off hind wheel cylinder 64, realizes the supercharging of Automobile Right rear wheel cylinder.So as to realize that the braking under ABS operating modes is pressurized.Specifically Flow of pressurized is as shown in thick line in Fig. 3.

2. steering and ABS pressurize operating modes to the left

(1) steering procedure：

Refering to Fig. 4, specifically steering implementation procedure is identical with steering procedure in operating mode 1 to the left, will not be repeated here.

(2) braking procedure：

Refering to Fig. 4, when system detectio to automobile needs anti-lock to make each wheel cylinder pressurize, electronic control unit (ECU) 65 perform order to the transmission of solenoid valve controller 66, and solenoid valve controller 66 controls the power-off of the second high-speed switch valve 33 to close, together When control the 4th normally open solenoid valve 49, the 5th normally open solenoid valve 50, the 6th normally open solenoid valve 51, the 7th normally open solenoid valve 52 is powered It is closed.

Now left front wheel cylinder 61, left back wheel cylinder 62, off-front wheel cylinder 63, the hydraulic oil in off hind wheel cylinder 64 are enclosed in each Among wheel cylinder, the pressure maintaining period of four wheel cylinders of automobile is realized.

Specific flow of pressurized is as shown in thick line in Fig. 4.

3. turn to the left and ABS depressurizes operating mode

(1) steering procedure：

Refering to Fig. 5, specifically steering implementation procedure is identical with steering procedure in operating mode 1 to the left, will not be repeated here.

(2) braking procedure：

Refering to Fig. 5, driver loosens the brake 42, the resilient force braking simulation master of braking simulation master cylinder spring 47 Cylinder piston 46 is moved to the left, and so as to drive simulation main cylinder piston-rod 44 to be moved to the left, makes 42 gradual return of brake pedal.

Now electronic control unit (ECU) 65 is sent to solenoid valve controller 66 and performs order, and solenoid valve controller 66 is controlled Make the power-off of the second high-speed switch valve 33 to close, while control the 4th normally open solenoid valve 49, the 5th normally open solenoid valve 50, the 6th is normally opened Magnetic valve 51, the 7th normally open solenoid valve 52 are powered and are closed；Control the 3rd normally closed solenoid valve 53, the 4th normally closed solenoid valve 54, the 5th normally closed solenoid valve 55, the 6th normally closed solenoid valve 56 is powered and is in open mode.Hydraulic oil in left front wheel cylinder 61 passes through 3rd normally closed solenoid valve 53 flows into fuel tank 16, realizes the decompression of left front wheel cylinder；Hydraulic oil in left back wheel cylinder 62 is normal by the 4th Close magnetic valve 54 and flow into fuel tank 16, realize the decompression of left back wheel cylinder；Hydraulic oil in off-front wheel cylinder 63 passes through the 5th normally closed electromagnetism Valve 55 flows into fuel tank 16, realizes the decompression of off-front wheel cylinder；Hydraulic oil in off hind wheel cylinder 64 is flowed by the 6th normally closed solenoid valve 56 Enter fuel tank 16, realize the decompression of off hind wheel cylinder.

So as to realize the braking compression release under ABS operating modes.

Specific flow of pressurized is as shown in thick line in Fig. 5.

4. turn to the left and the single-wheel of ESC the near front wheels is pressurized operating mode

(1) steering procedure：

Refering to Fig. 6, specifically steering implementation procedure is identical with steering procedure in operating mode 1 to the left, will not be repeated here.

(2) braking procedure：

Refering to Fig. 6, in vehicle travel process, when electronic control unit (ECU) 65 judges vehicle unstability, trigger ESC is controlled (by taking negative understeer to the right as an example：Need that front left wheel is implemented to brake, vehicle is kept stable).Now need not Step on brake pedal 42.

Motor 19 is in normal operating conditions, drives hydraulic pump 20 to rotate, 20 external output hydraulic pressure of hydraulic pump oil, in liquid Accumulator 18 and overflow valve 17 are connected at the oil-out of press pump 20.Wherein, the effect of accumulator 18 is stored up when hydraulic pump 20 works The excess energy provided from hydraulic pump 20 is provided, and eliminates the pulse ripple in fluid pressure line；Overflow valve 17 serves as safety valve Use, when the outlet pressure of hydraulic pump 20 increases severely, overflow valve 17 opens overflow, pressure value in system is in rational scope It is interior, ensure hydraulic system normal work.

The hydraulic oil of II intracavitary of master cylinder 36 enters left front wheel cylinder 61 by the 4th normally open solenoid valve 49, realizes automobile The braking supercharging of the near front wheel.So as to realize the braking supercharging of the near front wheel single-wheel under ESC operating modes.Thick line in specific flow of pressurized such as Fig. 6 It is shown.

5. steering and ESC the near front wheel single-wheel pressurize operating modes to the left

(1) steering procedure：

Refering to Fig. 7, specifically steering implementation procedure is identical with steering procedure in operating mode 1 to the left, will not be repeated here.

(2) braking procedure：

Refering to Fig. 7, when system detectio to automobile needs to make left front 61 pressurize of wheel cylinder, electronic control unit (ECU) 65 to Solenoid valve controller 66, which is sent, performs order, and solenoid valve controller 66 controls the power-off of the second high-speed switch valve 33 to close, same to time control The energization of the 4th normally open solenoid valve 49 is made to be closed.

Now the hydraulic oil in left front wheel cylinder 61 is enclosed among left front wheel cylinder, realizes the independent guarantor of the left front wheel cylinder of automobile Press through journey.Specific flow of pressurized is as shown in thick line in Fig. 7.

6. turn to the left and operating mode is depressurized in the single-wheel of ESC the near front wheels

(1) steering procedure：

Refering to Fig. 8, specifically steering implementation procedure is identical with steering procedure in operating mode 1 to the left, will not be repeated here.

(2) braking procedure：

Refering to Fig. 8, when system detectio to automobile needs to depressurize left front wheel cylinder 61, electronic control unit (ECU) 65 to Solenoid valve controller 66, which is sent, performs order, and solenoid valve controller 66 controls the power-off of the second high-speed switch valve 33 to close, same to time control The energization of the 4th normally open solenoid valve 49 is made to be closed；Control the 3rd normally closed solenoid valve 53 to be powered and be in open mode.It is left front Hydraulic oil in wheel cylinder 61 flows into fuel tank 16 by the 3rd normally closed solenoid valve 53, the decompression of left front wheel cylinder is realized, so as to realize ESC The single-wheel braking compression release of the near front wheel under operating mode.Specific flow of pressurized is as shown in thick line in Fig. 8.

7. turned to the left in the case of power-off failure and brake supercharging operating mode

(1) steering procedure：

Refering to Fig. 9, when system cut-off, all magnetic valves are powered off due to returning to initial position in the presence of spring force. When driver turns left steering wheel 1, steering spindle 2 rotates with steering wheel 1, and is rotated with moving gear 4, due to the He of gear 4 Rack 5 keeps engagement, forms rack-and-pinion, and the rotary motion of gear 4 can be converted to the straight line to the left of rack 5 Motion.Due to the left end of rack 5 with simulation the right-hand member of main cylinder piston-rod 6 be connected, therefore the motion of rack 5 can be transferred to simulation master cylinder live Stopper rod 6, the latter is set to keep to left movement.The I cavity pressure rise of master cylinder 11 is now simulated, hydraulic oil passes through the first normally opened electromagnetism Valve 14, three position four-way electromagnetic valve 25 enter in II chamber of power cylinder 28, make the increase of II cavity pressure, promote power cylinder to live Plug 27 is moved to the left, so as to drive power cylinder First piston bar 26 and power cylinder second piston bar 30 to be moved to the left. Power cylinder First piston bar 26 can drive left steering wheel assembly 31 to complete to turn to the left by the steering driving member of centre； Power cylinder second piston bar 30 can drive right turn wheel assembly 32 to complete to turn to the left by the steering driving member of centre. The I cavity pressure rise of power cylinder 28 simultaneously, its interior hydraulic oil is by three position four-way electromagnetic valve 25, the second normally open solenoid valve 15 enter in II chamber of simulation master cylinder 11, realize off-load.

(2) braking procedure：

Refering to Fig. 9, when system cut-off, all magnetic valves are powered off due to returning to initial position in the presence of spring force. Driver, which steps on brake pedal 42, makes it produce displacement, and brake pedal 43 drives braking simulation main cylinder piston-rod 44 to move right. Braking simulation main cylinder piston-rod 44 promotes braking simulation master cylinder piston 46 to move right, and braking simulation master cylinder 48 has in sap cavity Pressure rise, hydraulic oil are entered in I chamber of master cylinder 36 by the 3rd normally open solenoid valve 34, are made the increase of I cavity pressure, are pushed away Dynamic master cylinder first piston 38 moves right, and makes the increase of II cavity pressure, promotes master cylinder second piston 40 to move right, make The increase of III cavity pressure, II, III liang of chamber for completing master cylinder 36 build pressure.

The hydraulic oil of II intracavitary of master cylinder 36 enters left front wheel cylinder 61 by the 4th normally open solenoid valve 49, realizes automobile The braking supercharging of the near front wheel；The hydraulic oil of II intracavitary of master cylinder 36 enters left back wheel cylinder by the 5th normally open solenoid valve 50 62, realize the braking supercharging of automobile left rear wheel；The hydraulic oil of III intracavitary of master cylinder 36 enters by the 6th normally open solenoid valve 51 Enter off-front wheel cylinder 63, realize the supercharging of automobile off-front wheel cylinder；The hydraulic oil of III intracavitary of master cylinder 36 passes through the 7th normally opened electricity Magnet valve 52 enters off hind wheel cylinder 64, realizes the supercharging of Automobile Right rear wheel cylinder.So as to realize that the braking under power-off failure operating mode is pressurized. Specific flow of pressurized is as shown in thick line in Fig. 9, and flow of pressurized direction is as shown in arrow direction indication in Fig. 9.

8. in the case of power-off failure to the left turn to and braking compression release operating mode

(1) steering procedure：

Refering to Figure 10, when system cut-off, all magnetic valves are powered off due to returning to initial position in the presence of spring force. When driver turns left steering wheel 1, steering spindle 2 rotates with steering wheel 1, and is rotated with moving gear 4, due to the He of gear 4 Rack 5 keeps engagement, forms rack-and-pinion, and the rotary motion of gear 4 can be converted to the fortune of straight line to the left of rack 5 It is dynamic.Because the left end of rack 5 is connected with the simulation right-hand member of main cylinder piston-rod 6, therefore the motion of rack 5 can be transferred to simulation main cylinder piston-rod 6, the latter is kept to left movement.The I cavity pressure rise of master cylinder 11 is now simulated, hydraulic oil passes through the first normally open solenoid valve 14th, three position four-way electromagnetic valve 25 enters in II chamber of power cylinder 28, makes the increase of II cavity pressure, promotes power cylinder piston 27 are moved to the left, so as to drive power cylinder First piston bar 26 and power cylinder second piston bar 30 to be moved to the left.Turn By the steering driving member of centre left steering wheel assembly 31 can be driven to complete to turn to the left to power cylinder First piston bar 26；Turn By the steering driving member of centre right turn wheel assembly 32 can be driven to complete to turn to the left to power cylinder second piston bar 30.Together When power cylinder 28 I cavity pressure rise, its interior hydraulic oil by three position four-way electromagnetic valve 25, the second normally open solenoid valve 15 Into in II chamber of simulation master cylinder 11, off-load is realized.

(2) braking procedure：

Refering to Figure 10, when system cut-off, all magnetic valves are powered off due to returning to initial position in the presence of spring force. Driver loosens the brake 42, and the resilient force braking simulation master cylinder piston 46 of braking simulation master cylinder spring 47 is to moving to left It is dynamic, so as to drive simulation main cylinder piston-rod 44 to be moved to the left, make 42 gradual return of brake pedal.Braking simulation master cylinder 48 has Pressure in sap cavity reduces, and hydraulic oil flows back to braking simulation master cylinder from I chamber of master cylinder 36 by the 3rd normally open solenoid valve 34 48 have in sap cavity.Master cylinder first piston 38 and master cylinder second piston 40 in master cylinder 36 move right at it IIth, in the presence of the first spring of master cylinder 39 of III liang of intracavitary and master cylinder second spring 41, gradually it is moved to the left, now IIth, the volume of III liang of chamber becomes big, and pressure reduces.Hydraulic oil enters braking from left front wheel cylinder 61 by the 4th normally open solenoid valve 49 II intracavitary of master cylinder 36；Hydraulic oil enters II intracavitary of master cylinder 36 from left back wheel cylinder 62 by the 5th normally open solenoid valve 50； Hydraulic oil enters III intracavitary of master cylinder 36 from off-front wheel cylinder 63 by the 6th normally open solenoid valve 51；Hydraulic oil is from off hind wheel cylinder 64 enter III intracavitary of master cylinder 36 by the 7th normally open solenoid valve 52.Subtract so as to complete the braking under power-off failure operating mode Pressure.Specific flow of pressurized is as shown in thick line in Figure 10, and flow of pressurized direction is as shown in arrow direction indication in Figure 10.

The present embodiment using to the left turn to exemplified by annotate motor turning process, automobile to the right steering procedure when only need magnetic valve Controller 66 controls the right-hand member of three position four-way electromagnetic valve 25 to be powered, and remaining process is similar with turning to the left.

Claims

1. a kind of line traffic control hydraulic braking steering, it is characterised in that a kind of described line traffic control hydraulic braking steering includes Hydraulic power source part (A), knuckle section (B), brake portion (C) and electric control part (D)；

It is normally closed that described hydraulic power source part (A) includes hydraulic pump (20), the first check valve (21), the second check valve (22) and the 8th Magnetic valve (74)；

Described knuckle section (B) includes the first normally closed solenoid valve (12) and the first high-speed switch valve (23)；

Described brake portion (C) includes the second high-speed switch valve (33) and the 7th normally closed solenoid valve (35)；

Described hydraulic power source part (A) passes through the 8th normally closed solenoid valve (74), the first check valve (21), the first normally closed solenoid valve (12) it is connected with the first high-speed switch valve (23) and using fluid pressure line and knuckle section (B)；(A) passes through liquid for hydraulic power source part Press pump (20), the second check valve (22), the second high-speed switch valve (33) and the 7th normally closed solenoid valve (35) simultaneously use fluid pressure line It is connected with brake portion (C)；Electric control part (D) is electric with hydraulic power source part (A), knuckle section (B) and brake portion (C) respectively Line connects.

2. according to a kind of line traffic control hydraulic braking steering described in claim 1, it is characterised in that described hydraulic power source part (A) the 8th normally closed solenoid valve (74), the first check valve (21), the first normally closed solenoid valve (12) and the first high-speed switch valve are passed through (23) and it is connected using fluid pressure line with knuckle section (B) and is referred to：

The Single port of the 8th normally closed solenoid valve (74) in described hydraulic power source part (A) uses fluid pressure line and knuckle section (B) the Single port connection of the first normally closed solenoid valve (12) in, the oil-out of the first check valve (21) in hydraulic power source part (A) It is connected using fluid pressure line with the Single port of the first high-speed switch valve (23) in knuckle section (B)；

Described hydraulic power source part (A) passes through hydraulic pump (20), the second check valve (22), the second high-speed switch valve (33) and the 7th Normally closed solenoid valve (35) and use fluid pressure line are connected with brake portion (C) to be referred to：

The oil inlet of hydraulic pump (20) in described hydraulic power source part (A) is using the in fluid pressure line and brake portion (C) The Single port connection of seven normally closed solenoid valves (35), the oil-out of the second check valve (22) in hydraulic power source part (A) use hydraulic pressure Pipeline is connected with the Single port of the second high-speed switch valve (33) in brake portion (C).

3. according to a kind of line traffic control hydraulic braking steering described in claim 1, it is characterised in that described hydraulic power source part (A) fuel tank (16), overflow valve (17), accumulator (18) and motor (19) are also included；

The motor shaft of described motor (19) is connected with hydraulic pump (20) input shaft end, and the oil inlet of hydraulic pump (20) uses Fluid pressure line is connected with fuel tank (16), and the oil-out of hydraulic pump (20) uses fluid pressure line and accumulator (18), overflow valve (17) oil-feed port, the oil inlet of the first check valve (21) are connected with the oil inlet of the second check valve (22), overflow valve (17) fuel-displaced port is connected with fuel tank (16) using fluid pressure line, the another port of the 8th normally closed solenoid valve (74) and fuel tank (16) it is connected using fluid pressure line.

4. according to a kind of line traffic control hydraulic braking steering described in claim 1, it is characterised in that described knuckle section (B) also include steering wheel (1), steering spindle (2), corner torque sensor (3), gear (4), rack (5), simulation master cylinder (11), Second normally closed solenoid valve (13), the first normally open solenoid valve (14), the second normally open solenoid valve (15), first pressure sensor (24), Three position four-way electromagnetic valve (25), power cylinder (28), left steering wheel assembly (31) and right turn wheel assembly (32)；

Described steering wheel (1) is fixedly mounted on the upper end of steering spindle (2), and gear (4) is fixedly mounted under steering spindle (2) End, corner torque sensor (3) are arranged in steering spindle (2), and gear (4) engages connection, the left end of rack (5) with rack (5) It is fixedly connected with the right-hand member of the simulation main cylinder piston-rod (6) in simulation master cylinder (11)；

Simulate the hydraulic fluid port of simulation master cylinder first (67) on master cylinder (11) using fluid pressure line respectively with the first normally closed solenoid valve (12) Single port, the Single port of the first normally open solenoid valve (14) be connected, the hydraulic fluid port of simulation master cylinder second in simulation master cylinder (11) (68) the fluid pressure line Single port with the second normally closed solenoid valve (13), the Single port phase of the second normally open solenoid valve (15) respectively are used Connection；The other end of first normally closed solenoid valve (12) and the other end of the second normally closed solenoid valve (13) use fluid pressure line and three The O port of four way solenoid valve (25) is connected, and the other end of the first normally open solenoid valve (14) uses fluid pressure line and 3-position 4-way The P mouths of magnetic valve (25) are connected, and the other end of the second normally open solenoid valve (15) uses fluid pressure line and three position four-way electromagnetic valve (25) O mouths are connected；

The P ports of described three position four-way electromagnetic valve (25) are connected with the Single port of the first high-speed switch valve (23) using fluid pressure line Connect, first pressure sensor (24) is arranged on the P ports and the first high-speed switch valve (23) one end of three position four-way electromagnetic valve (25) On fluid pressure line between mouthful, the A ports of three position four-way electromagnetic valve (25) and the power cylinder on power cylinder (28) the One hydraulic fluid port (69) is connected using fluid pressure line, B ports and the steering on power cylinder (28) of three position four-way electromagnetic valve (25) The hydraulic fluid port of power cylinder second (70) is connected using fluid pressure line；The left end of power cylinder (28) is connected with left steering wheel assembly (31) Connect, the right-hand member of power cylinder (28) is connected with right turn wheel assembly (32).

5. according to a kind of line traffic control hydraulic braking steering described in claim 4, it is characterised in that described simulation master cylinder (11) simulation main cylinder piston-rod (6), the simulation spring of master cylinder first (7), simulation master cylinder piston (8), the simulation bullet of master cylinder second are included Spring (9) and simulation master cylinder body (10)；

The simulation hydraulic fluid port of master cylinder first (67) and the simulation hydraulic fluid port of master cylinder second (68) are provided with described simulation master cylinder body (10), Left end of the hydraulic fluid port of master cylinder first (67) positioned at simulation master cylinder body (10) is simulated, the simulation hydraulic fluid port of master cylinder second (68) is led positioned at simulation The right-hand member of cylinder cylinder body (10)；

The described spring of simulation master cylinder first (7) is identical with simulation master cylinder second spring (9) structure；

Described simulation master cylinder piston (8) is arranged in simulation master cylinder body (10), simulation master cylinder piston (8) and simulation master cylinder cylinder To be slidably matched between body (10), simulation master cylinder (11) is installed in the simulation master cylinder piston (8) in simulation master cylinder body (10) It is divided into I chamber, II chamber from left to right；The simulation spring of master cylinder first (7) is positioned at II intracavitary for simulating master cylinder (11) and is sleeved on simulation On main cylinder piston-rod (6), simulation the spring of master cylinder first (7) left and right ends successively with simulation master cylinder piston (8) right side in At the heart connection is contacted with simulating the madial wall of master cylinder body (10) right cylinder wall；Master cylinder second spring (9) is simulated positioned at simulation master cylinder (11) I intracavitary, the right-hand member of simulation master cylinder second spring (9) are fixedly connected at the center with simulating master cylinder piston (8) left side, The left end of simulation master cylinder second spring (9) contacts connection with simulating the madial wall of master cylinder body (10) left cylinder wall.

6. according to a kind of line traffic control hydraulic braking steering described in claim 4, it is characterised in that described power cylinder (28) power cylinder First piston bar (26), power cylinder piston (27), power cylinder cylinder body (29) are included with turning to Power cylinder second piston bar (30)；

The hydraulic fluid port of power cylinder first (69) and the oil of power cylinder second are provided with described power cylinder cylinder body (29) Mouth (70), the hydraulic fluid port of power cylinder first (69) are located at the left end of power cylinder cylinder body (29), the hydraulic fluid port of power cylinder second (70) it is located at the right-hand member of power cylinder cylinder body (29)；

Described power cylinder piston (27) is arranged in power cylinder cylinder body (29), and power cylinder piston (27) is with turning To between power cylinder cylinder body (29) to be slidably connected, the steering that power cylinder (28) is placed in power cylinder cylinder body (29) Power cylinder piston (27) is divided into I chamber and II chamber from left to right；

Described power cylinder First piston bar (26) is located at I intracavitary of power cylinder (28), and power cylinder first is lived The right-hand member of stopper rod (26) is lived with being fixedly connected at the center of power cylinder piston (27) left side in power cylinder first Sealing ring is installed between stopper rod (26) and power cylinder piston (27) and power cylinder cylinder body (29)；

Described power cylinder second piston bar (30) is located at II intracavitary of power cylinder (28), and power cylinder second is lived The left end of stopper rod (30) is lived with being fixedly connected at the center of power cylinder piston (27) right side in power cylinder second Sealing ring is installed between stopper rod (30), power cylinder piston (27) and power cylinder cylinder body (29).

7. according to a kind of line traffic control hydraulic braking steering described in claim 1, it is characterised in that described brake portion (C) the 3rd normally open solenoid valve (34), master cylinder (36), brake pedal (42), pedal displacement sensor (43), braking are also included Simulate master cylinder (48), the 4th normally open solenoid valve (49), the 5th normally open solenoid valve (50), the 6th normally open solenoid valve (51), the 7th normal It is open electromagnetic valve (52), the 3rd normally closed solenoid valve (53), the 4th normally closed solenoid valve (54), the 5th normally closed solenoid valve (55), the 6th normal Close magnetic valve (56), second pressure sensor (57), the 3rd pressure sensor (58), the 4th pressure sensor (59), the 5th pressure Force snesor (60), left front wheel cylinder (61), left back wheel cylinder (62), off-front wheel cylinder (63), off hind wheel cylinder (64), the 3rd check valve (75) with the 4th check valve (76)；

The left end of described brake pedal (42) and braking simulation master cylinder (48) is hinged, and pedal displacement sensor (43) is arranged on system Dynamic model is intended on the braking simulation main cylinder piston-rod (44) in master cylinder (48)；The oil-out and the 3rd of braking simulation master cylinder (48) right chamber The Single port of normally open solenoid valve (34), the Single port of the 7th normally closed solenoid valve (35) are respectively adopted fluid pressure line and are connected, and the 3rd is normal The another port of open electromagnetic valve (34) and the master cylinder on the Single port and master cylinder (36) of the second high-speed switch valve (33) First hydraulic fluid port (73) is connected using fluid pressure line；

The Single port of the hydraulic fluid port of master cylinder second (71) and the 4th normally open solenoid valve (49) on described master cylinder (36), Fluid pressure line connection is respectively adopted in the Single port of five normally open solenoid valves (50), the fuel-displaced port of the 3rd check valve (75)；4th is normal Hydraulic tube is respectively adopted in the Single port of the another port of open electromagnetic valve (49) and the 3rd normally closed solenoid valve (53), left front wheel cylinder (61) Road is connected；Second pressure sensor (57) is arranged between another port and the left front wheel cylinder (61) of the 4th normally open solenoid valve (49) Fluid pressure line in, the another port of the 5th normally open solenoid valve (50) and Single port, the left rear wheel of the 4th normally closed solenoid valve (54) Cylinder (62) is connected by fluid pressure line respectively；3rd pressure sensor (58) is arranged on the other end of the 5th normally open solenoid valve (50) In fluid pressure line between mouth and left back wheel cylinder (62), the oil inlet end and fuel tank (16) of the 3rd check valve (75) use fluid pressure line Connection；

The described hydraulic fluid port (72) of master cylinder the 3rd and Single port, the 7th normally open solenoid valve (52) of the 6th normally open solenoid valve (51) Single port, the fuel-displaced port of the 4th check valve (76) be respectively adopted fluid pressure line connection；6th normally open solenoid valve (51) it is another The Single port of Single port and the 5th normally closed solenoid valve (55), off-front wheel cylinder (63) are respectively adopted fluid pressure line and are connected；4th pressure Sensor (59) is located on the fluid pressure line between the another port of the 6th normally open solenoid valve (51) and off-front wheel cylinder (63), and the 7th Hydraulic pressure is respectively adopted in the Single port of the another port of normally open solenoid valve (52) and the 6th normally closed solenoid valve (56), off hind wheel cylinder (64) Pipeline is connected；5th pressure sensor (60) is located between another port and the off hind wheel cylinder (64) of the 7th normally open solenoid valve (52) Fluid pressure line on, another port, another port, 5 constant virtues of the 4th normally closed solenoid valve (54) of the 3rd normally closed solenoid valve (53) Close the another port of magnetic valve (55) and fluid pressure line and fuel tank is respectively adopted with the another port of the 6th normally closed solenoid valve (56) (16) it is connected；The oil inlet end of 4th check valve (76) is connected with fuel tank (16) using fluid pressure line.

8. according to a kind of line traffic control hydraulic braking steering described in claim 7, it is characterised in that described braking simulation master Cylinder (48) include braking simulation main cylinder piston-rod (44), braking simulation master cylinder body (45), braking simulation master cylinder piston (46) with Braking simulation master cylinder spring (47)；

Described braking simulation master cylinder piston (46) is arranged in braking simulation master cylinder body (45), braking simulation master cylinder piston (46) to be slidably matched between braking simulation master cylinder body (45), the braking simulation that master cylinder (48) is located therein is simulated in braking Master cylinder piston (46) is divided into left chamber and right chamber from left to right, and braking simulation main cylinder piston-rod (44) is arranged on braking simulation master cylinder (48) in left chamber, the right-hand member of braking simulation main cylinder piston-rod (44) at braking simulation master cylinder piston (46) left side center with consolidating Fixed connection, and in braking simulation main cylinder piston-rod (44) and braking simulation master cylinder piston (46) and braking simulation master cylinder body (45) Between sealing ring is housed；The center of one end of braking simulation master cylinder spring (47) and the right side of braking simulation master cylinder piston (46) Place is fixedly connected, and the other end at the center on the inside of braking simulation master cylinder body (45) right-hand member casing wall with being fixedly connected.

9. according to a kind of line traffic control hydraulic braking steering described in claim 7, it is characterised in that described master cylinder (36) master cylinder body (37), master cylinder first piston (38), the spring of master cylinder first (39), master cylinder the are included Two pistons (40) and master cylinder second spring (41)；

The three hydraulic fluid ports i.e. hydraulic fluid port of master cylinder first (73), master cylinder second is provided with described master cylinder body (37) Hydraulic fluid port (71) and the hydraulic fluid port (72) of master cylinder the 3rd, the hydraulic fluid port of master cylinder first (73) are located at the left end of master cylinder body (37) I.e. in I chamber cylinder body of master cylinder (36), the hydraulic fluid port of master cylinder second (71) is located at the middle-end of master cylinder body (37) I.e. in II chamber cylinder body of master cylinder (36), the hydraulic fluid port (72) of master cylinder the 3rd is located at the right-hand member of master cylinder body (37) I.e. in III chamber cylinder body of master cylinder (36)；

Described master cylinder first piston (38), master cylinder second piston (40) are arranged in master cylinder body (37), Master cylinder first piston (38) is located at the left side of master cylinder second piston (40), master cylinder first piston (38), braking To be slidably matched between master cylinder second piston (40) and master cylinder body (37), master cylinder (36) is by positioned at master cylinder (36) the master cylinder first piston (38) in is divided into I chamber, II chamber and III chamber from left to right with master cylinder second piston (40)；

The described spring of master cylinder first (39) is located at II intracavitary of master cylinder (36), and its left end is lived with master cylinder first Plug is fixedly connected at (38) right side center, the spring of master cylinder first (39) right-hand member and master cylinder second piston (40) left end Face is fixedly connected at center, and master cylinder second spring (41) is located at III intracavitary of master cylinder (36), and its left end is led with braking It is fixedly connected at cylinder second piston (40) right side center, its right-hand member at master cylinder body (37) right cylinder wall medial center with consolidating Fixed connection.

10. according to a kind of line traffic control hydraulic braking steering described in claim 1, it is characterised in that described electric control part (D) electronic control unit (65) and solenoid valve controller (66) are included；

Electronic control unit (65) respectively with corner torque sensor (3), pedal displacement sensor (43), first pressure sensor (24), second pressure sensor (57), the 3rd pressure sensor (58), the 4th pressure sensor (59), the 5th pressure sensor (60), motor (19) is connected with solenoid valve controller (66) electric wire；Solenoid valve controller (66) respectively with the first speed-sensitive switch Valve (23), the second high-speed switch valve (33), the first normally open solenoid valve (14), the second normally open solenoid valve (15), the 3rd normally opened electromagnetism Valve (34), the 4th normally open solenoid valve (49), the 5th normally open solenoid valve (50), the 6th normally open solenoid valve (51), the 7th normally opened electromagnetism Valve (52), the first normally closed solenoid valve (12), the second normally closed solenoid valve (13), the 3rd normally closed solenoid valve (53), the 4th normally closed electromagnetism Valve (54), the 5th normally closed solenoid valve (55), the 6th normally closed solenoid valve (56), the 7th normally closed solenoid valve (35), the 8th normally closed electromagnetism Valve (74) is connected with three position four-way electromagnetic valve (25) electric wire.