Vehicle escape device and method

Abstract

The present invention relates to the technical field of vehicle escape, and proposes a vehicle escape device and method, including a vehicle chassis, wherein the front and rear ends of the vehicle chassis are respectively connected with a front independent suspension and a rear independent suspension, two independently driven front wheels are arranged on both sides of the front independent suspension, two independently driven rear wheels are arranged on both sides of the rear independent suspension, a driven steering front axle is connected between the two independently driven front wheels, and a driven steering rear axle is connected between the two independently driven rear wheels. The present invention can realize reciprocating pushing and pulling of the vehicle by setting a liftable front independent suspension and a rear independent suspension, and cooperate with an electric brake assembly through lifting and lifting and independent driving of the wheels, and at the same time, the lifting and lowering bumps can change the grip of the wheels, so that the vehicle can escape from the jam by itself, and the use effect is good, and there is no need for manual disembarkation and auxiliary devices to escape from the jam.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle escape, and in particular to a vehicle escape device and method. Background Art

[0002] When a vehicle is trapped, for example, when the front wheel or rear wheel is stuck in a pit, the driver usually steps hard on the accelerator pedal to get out of the trap, but the effect is generally poor, and an auxiliary device is still needed. The trapped vehicle can only be freed with the help of the auxiliary device or external force, which often causes great trouble to the driver. Although the front and rear wheels of common four-wheel drive vehicles can be driven and the steering can improve the escape effect, the escape effect is still not good enough. Therefore, a vehicle escape device and method are proposed based on the existing four-wheel drive vehicles. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a vehicle escape device and method, which solves the problem that the vehicle escape effect in the prior art is poor and still requires external auxiliary devices. The trapped vehicle can only be escaped with the help of the auxiliary devices or external forces, which often causes great trouble to the driver.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vehicle escape device and method, comprising a vehicle chassis, wherein the front and rear ends of the vehicle chassis are respectively connected to a front independent suspension and a rear independent suspension, two independently driven front wheels are arranged on both sides of the front independent suspension, and two independently driven rear wheels are arranged on both sides of the rear independent suspension, a driving steering front axle is connected between the two independently driven front wheels, and a driving steering rear axle is connected between the two independently driven rear wheels, the driving steering front axle and the driving steering rear axle are driven and steered by a steering controller, a differential and a mechanical shaft, and the independently driven front wheels and the independently driven rear wheels are braked by electric brake assemblies respectively;

[0005] The front independent suspension and the rear independent suspension both include a connecting slide, support vertical frames are provided on both sides of the connecting slide, a sliding connection assembly is provided between the connecting slide and the support vertical frames, the top end of the support vertical frames is rotatably connected to a mounting cross frame, the end of the mounting cross frame away from the support vertical frames is rotatably connected to the mounting vertical frames, a buffer and lifting assembly is installed inside the mounting vertical frames, and the mounting vertical frames and the connecting slide are both connected to the vehicle bottom frame.

[0006] Preferably, the sliding connection assembly includes two groups of transverse slide rails connected to the side walls of the slide frame and a group of longitudinal slide rails fixed on the side walls of the supporting vertical frame, and transverse and longitudinal assembly sliding sleeves are arranged between the transverse slide rails and the longitudinal slide rails, and the transverse and longitudinal assembly sliding sleeves are respectively slidably connected to the transverse slide rails and the longitudinal slide rails.

[0007] Preferably, the supporting vertical frames of the front independent suspension and the rear independent suspension are respectively connected to the brackets of the driving steering front axle and the driving steering rear axle.

[0008] Preferably, the buffer and lifting assembly includes a buffer shock-absorbing spring and a cylinder, the bottom end of the cylinder is rotatably connected to the mounting vertical frame, the piston end of the cylinder is connected to an N-shaped bracket installed at the bottom end of the buffer shock-absorbing spring, the top end of the buffer shock-absorbing spring is rotatably connected to the power arm end of the mounting horizontal frame, and the telescopic end of the cylinder is used to lift the mounting horizontal frame upward when extended.

[0009] Preferably, the electric brake assembly includes a front brake pump body, a rear brake pump body, a foot brake pedal, an electric rear brake push rod motor, an electric front brake push rod motor, a front brake pump push rod, a rear brake pump push rod, a rear brake motor push rod, and a front brake motor push rod;

[0010] Preferably, the front and rear ends of the vehicle chassis are respectively provided with escape support assemblies near the front independent suspension and the rear independent suspension, and the top end of the escape support assembly is connected to a pushing assembly through an electromagnet locating pin, and the pushing assembly is connected to the transverse and longitudinal assembly sliding sleeves.

[0011] Preferably, the escape support assembly includes a fixing plate fixed on the inner wall of the vehicle frame, a pressure rod is connected through the center of the fixing plate, the electromagnet locating pin is installed on the top of the pressure rod, a supporting plate is fixed to the bottom of the pressure rod, both side walls of the supporting plate are connected to steel wheels, a pressure plate is fixed to the outer surface of the pressure rod, and a spring body is fixed between the pressure plate and the fixing plate.

[0012] Preferably, the pushing assembly includes a push plate, a sliding sleeve on the outer surface of the push plate is provided with a positioning sleeve, the positioning sleeve is fixed to the vehicle frame, an inclined opening is opened on the surface of one end of the push plate close to the escape support assembly, the inclined opening is separated or connected to the electromagnet positioning pin, and a lifting rod is connected to the end of the push plate away from the escape support assembly, and the lifting rod is connected to the transverse and longitudinal assembly sleeves through a connecting frame.

[0013] The front brake pump body and the rear brake pump body are respectively connected to the corresponding front brake pump push rod and the rear brake pump push rod, the electric rear brake push rod motor and the electric front brake push rod motor are respectively connected to the corresponding rear brake motor push rod and the front brake motor push rod, the rear brake motor push rod and the front brake motor push rod are respectively unidirectionally connected through the corresponding first pins on the front brake pump push rod and the rear brake pump push rod, and the foot brake pedal is respectively unidirectionally connected to the front brake pump push rod and the rear brake pump push rod through the second pin, so that the brake push rod motor is independent of the foot brake pedal when working, and the foot brake pedal is independent of the brake push rod motor when working.

[0014] Vehicle escape methods include:

[0015] S1. When the vehicle is freed from trouble, the electric rear brake push rod motor and the electric front brake push rod motor work alternately;

[0016] S2. When the vehicle body rises, the electric front brake push rod motor works, the front brake motor push rod pulls the front brake pump push rod to brake the two independently driven front wheels, the oil cylinder is pushed out, the vehicle body rises, and the two independently driven rear wheels are forcibly pulled forward by the rising vehicle body, and at the same time, the two independently driven rear wheels are driven by themselves to get out of trouble;

[0017] S3, when the vehicle body is raised to the right position, the electric front brake push rod motor releases the brakes of the two independently driven front wheels, and at the same time, the electric rear brake push rod motor works, and the rear brake pump push rod pulls the rear brake pump push rod to brake the two independently driven rear wheels. At this time, the oil cylinder retracts, the vehicle body descends, and the independently driven front wheels are forcibly pushed forward by the descending vehicle body, and at the same time, the two independently driven front wheels drive themselves;

[0018] S4. When the vehicle body is lowered into position, the electric front brake push rod motor releases the brakes of the two independently driven rear wheels and brakes the independently driven front wheels at the same time, and the vehicle body rises, and the reciprocating motion is used to escape from the predicament.

[0019] The present invention provides a vehicle escape device and method, which have the following beneficial effects:

[0020] The present invention arranges liftable front independent suspension and rear independent suspension in conjunction with an electric brake assembly. The lifting and lowering and independent driving of the wheels can realize reciprocating pushing and pulling of the vehicle. At the same time, the lifting and lowering jolt can change the grip of the wheels, so that the vehicle can get out of trouble by itself. The use effect is good and there is no need for manual disembarkation and auxiliary devices to get out of trouble.

[0021] By arranging the escape support assembly and the pushing assembly, when the vehicle is driving, the front wheels or rear wheels of the vehicle may fall off the road surface. When the vehicle is in a suspended state, escape can be achieved by supporting the ground and lifting the independent suspension, so that the escape device can adapt to various situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a vehicle escape device according to the present invention;

[0023] Figure 2 It is a partial stereoscopic diagram of a vehicle escape device of the present invention;

[0024] Figure 3 A first perspective view of a rear independent suspension in a vehicle escape device of the present invention;

[0025] Figure 4A second viewing angle diagram of a rear independent suspension in a vehicle escape device of the present invention;

[0026] Figure 5 This is an overall structural diagram of an electric brake assembly in a vehicle escape device of the present invention;

[0027] Figure 6 It is a partial disassembled diagram of a rear independent suspension in a vehicle escape device of the present invention;

[0028] Figure 7 It is an overall structural diagram of a vehicle escape support assembly and a pushing assembly in a vehicle escape device of the present invention;

[0029] Figure 8 The present invention is a diagram showing the overall structure of a vehicle escape support assembly in a vehicle escape device.

[0030] Among them, 1. chassis; 2. front independent suspension; 3. rear independent suspension; 31. connecting slide; 32. supporting vertical frame; 33. sliding connection assembly; 331. transverse slide rail; 332. transverse and longitudinal assembly sleeve; 333. longitudinal slide rail; 34. mounting vertical frame; 35. mounting cross frame; 351. power arm end; 4. independently driven front wheel; 5. independently driven rear wheel; 6. electric brake assembly; 61. front brake pump body; 62. rear brake pump body; 63. foot brake pedal; 64. electric rear brake push rod motor; 65. electric front brake push rod motor ; 66. Front brake pump push rod; 67. Rear brake pump push rod; 68. Rear brake motor push rod; 69. Front brake motor push rod; 610. First pin; 611. Second pin; 7. Buffer and lifting assembly; 71. Buffer shock-absorbing spring; 72. Cylinder; 8. Escape support assembly; 81. Pressure plate; 82. Spring body; 83. Pressure rod; 84. Support plate; 85. Fixed plate; 86. Steel wheel; 9. Push assembly; 91. Push plate; 92. Inclined opening; 93. Positioning sleeve; 94. Lifting rod; 95. Connecting frame; 10. Electromagnet positioning pin. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-Figure 6As shown, an embodiment of the present invention provides a vehicle escape device, comprising a vehicle chassis 1, wherein the front and rear ends of the vehicle chassis 1 are respectively connected with a front independent suspension 2 and a rear independent suspension 3, two independently driven front wheels 4 are arranged on both sides of the front independent suspension 2, and two independently driven rear wheels 5 are arranged on both sides of the rear independent suspension 3, a driving steering front axle is connected between the two independently driven front wheels 4, and a driving steering rear axle is connected between the two independently driven rear wheels 5, driving and steering are realized between the driving steering front axle and the driving steering rear axle through a steering controller, a differential and a mechanical shaft, and braking is realized by electric brake assemblies 6 for the independently driven front wheels 4 and the independently driven rear wheels 5;

[0034] The front independent suspension 2 and the rear independent suspension 3 both include a connecting slide 31, and supporting vertical frames 32 are arranged on both sides of the connecting slide 31. A sliding connection assembly 33 is arranged between the connecting slide 31 and the supporting vertical frames 32. The top end of the supporting vertical frames 32 is rotatably connected to a mounting cross frame 35, and the end of the mounting cross frame 35 away from the supporting vertical frames 32 is rotatably connected to a mounting vertical frame 34. A buffer and lifting assembly 7 is installed inside the mounting vertical frame 34. The mounting vertical frame 34 and the connecting slide 31 are both connected to the vehicle bottom frame 1. When one end of the mounting cross frame 35 is lifted, a driving force can be given to the vehicle bottom frame 1, thereby pushing the vehicle out of trouble.

[0035] The sliding connection assembly 33 includes two groups of transverse slide rails 331 on the side walls of the connecting slide 31 and a group of longitudinal slide rails 333 fixed on the side walls of the supporting vertical frame 32. Transverse and longitudinal assembly sliding sleeves 332 are arranged between the transverse slide rails 331 and the longitudinal slide rails 333. The transverse and longitudinal assembly sliding sleeves 332 are slidingly connected to the transverse slide rails 331 and the longitudinal slide rails 333 respectively. The supporting vertical frames 32 of the front independent suspension 2 and the rear independent suspension 3 are respectively connected to the brackets of the driving steering front axle and the driving steering rear axle. When one end of the mounting cross frame 35 is lifted, the transverse and longitudinal assembly sliding sleeves 332 will move forward relative to the connecting slide 31, and slide relative to the surface of the longitudinal slide rails 333, which will not affect the lifting of the mounting cross frame 35.

[0036] The buffer and lifting assembly 7 includes a buffer shock-absorbing spring 71 and a cylinder 72. The bottom end of the cylinder 72 is rotatably connected to the mounting vertical frame 34. The piston end of the cylinder 72 is connected to the N-shaped bracket installed at the bottom end of the buffer shock-absorbing spring 71. The top end of the buffer shock-absorbing spring 71 is rotatably connected to the power arm end 351 of the mounting cross frame 35. Taking the independent suspension 3 as an example, when the telescopic end of the cylinder 72 is extended, it is used to lift one end of the mounting cross frame 35 upward, so that the wheel arranged on the other side of the mounting cross frame 35 can be pushed forward.

[0037] The electric brake assembly 6 includes a front brake pump body 61, a rear brake pump body 62, a foot brake pedal 63, an electric rear brake push rod motor 64, an electric front brake push rod motor 65, a front brake pump push rod 66, a rear brake pump push rod 67, a rear brake motor push rod 68, and a front brake motor push rod 69;

[0038] The front brake pump body 61 and the rear brake pump body 62 are connected to the corresponding front brake pump push rod 66 and the rear brake pump push rod 67 respectively. The electric rear brake push rod motor 64 and the electric front brake push rod motor 65 are connected to the corresponding rear brake motor push rod 68 and the front brake motor push rod 69 respectively. The rear brake motor push rod 68 and the front brake motor push rod 69 are connected in one way through the corresponding first pin 610 on the front brake pump push rod 66 and the rear brake pump push rod 67 respectively. The one-way connection of the pin is to fix a strip on the surface of the brake pump push rod. The pin of the motor push rod passes through the fixed frame, and the pin is located on the side of the strip-shaped opening close to the push rod motor. Therefore, when getting out of trouble, the push rod motor can pull the brake pump push rod to move and brake under the action of the pin. When the brake is in normal use, the foot brake pedal 63 is stepped on to push the brake pump push rod to move. The pin will slide in the strip-shaped opening and will not affect the push rod motor. The foot brake pedal 63 is respectively connected to the front brake pump push rod 66 and the rear brake pump push rod 67 in one-way through the second pin 611. The meaning of the one-way connection of the pin is the same.

[0039] Embodiment 2:

[0040] Vehicle escape methods include:

[0041] S1, when the vehicle is freed from the jam, the electric rear brake push rod motor 64 and the electric front brake push rod motor 65 work alternately;

[0042] S2, when the vehicle body rises, the electric front brake push rod motor 65 works, the front brake motor push rod 69 pushes the corresponding pin to pull the front brake pump push rod 66 to brake the two independently driven front wheels 4, the oil cylinder 72 is pushed out, the vehicle body rises, and the two independently driven rear wheels 5 are forcibly pulled forward by the rising vehicle body, and at the same time, the two independently driven rear wheels 5 are driven by themselves to get out of trouble;

[0043] S3, when the vehicle body is raised to the position, the electric front brake push rod motor 65 releases the brakes of the two independently driven front wheels 4, and at the same time, the electric rear brake push rod motor 64 works, and the rear brake pump push rod 67 pushes the corresponding pin to pull the rear brake pump push rod 67 to brake the two independently driven rear wheels 5. At this time, the oil cylinder 72 retracts, the vehicle body descends, and the independently driven front wheels 4 are forced forward by the descending vehicle body, and at the same time, the two independently driven front wheels 4 drive themselves;

[0044] S4, when the vehicle body is lowered into place, the electric front brake push rod motor 65 releases the brakes of the two independently driven rear wheels 5, and brakes the independently driven front wheels at the same time, and the vehicle body rises, and the reciprocating motion is realized to get out of trouble.

[0045] Embodiment 3:

[0046] When the vehicle is driving, the front wheel or rear wheel of the vehicle may fall off the road surface and be suspended in the air. For example, when the front wheel is suspended in the air, the front end of the vehicle body contacts the curb. At this time, the front wheel cannot exert force, and the rear wheel alone cannot achieve escape. To address this problem, the device is further designed:

[0047] like Figure 1 , Figure 7-Figure 8 As shown, the front and rear ends of the vehicle chassis 1 are respectively provided with escape support assemblies 8 near the front independent suspension 2 and the rear independent suspension 3. The top end of the escape support assembly 8 is connected to a pushing assembly 9 through an electromagnet locating pin 10, and the pushing assembly 9 is connected to the transverse and longitudinal assembly sliding sleeves 332.

[0048] Specifically, the escape support assembly 8 includes a fixing plate 85 fixed on the inner wall of the vehicle bottom frame 1, a pressure rod 83 is connected through the center of the fixing plate 85, an electromagnet positioning pin 10 is installed on the top of the pressure rod 83, a support plate 84 is fixed to the bottom of the pressure rod 83, both side walls of the support plate 84 are connected to steel wheels 86, a pressure plate 81 is fixed to the outer surface of the pressure rod 83, a spring body 82 is fixed between the pressure plate 81 and the fixing plate 85, and when the pressure rod 83 moves downward, it can drive the support plate 84 to move downward and contact the ground.

[0049] The pushing assembly 9 includes a push plate 91, a sliding sleeve on the outer surface of the push plate 91 is provided with a positioning sleeve 93, and the positioning sleeve 93 is fixed to the vehicle bottom frame 1. An inclined opening 92 is provided on the surface of one end of the push plate 91 close to the escape support assembly 8, and the inclined opening 92 is separated or connected to the electromagnet positioning pin 10. When the vehicle is driving normally or is escaped by the method of Example 2, that is, the electromagnet positioning pin 10 is retracted, the electromagnet positioning pin 10 and the inclined opening 92 are in a separated state, which will not affect the normal driving of the vehicle and the escape in Example 2. When the front wheel or the rear wheel falls and is suspended in the air and needs to be escaped by this method, it can be switched to the escape mode so that the electromagnet positioning pin 10 extends out, and the end of the push plate 91 away from the escape support assembly 8 is connected to a lifting rod 94, and the lifting rod 94 is connected to the transverse and longitudinal component sleeves 332 through the connecting frame 95. It can be seen from the above-mentioned embodiment 1 that when the front independent suspension 2 or the rear independent suspension 3 is lifted, the transverse and longitudinal component sleeves 332 will move forward, thereby driving the push plate 91 to move forward. When the push plate 91 moves forward, the inclined opening 92 can drive the top support plate 84 to move downward, and the front end or rear end of the vehicle body is slightly lifted off the curb. Specifically, taking the falling of the rear wheel as an example, when the rear end of the vehicle body is lifted off, the rear independent suspension 3 will also be lifted upward under the action of the lifting to reduce the risk of the vehicle falling. At this time, the independently driven front wheel 4 is driven to move, and can be moved forward under the action of the steel wheel 86, so that the independently driven front wheel 4 can contact the curb, and then the independently driven rear wheel 5 is driven to achieve escape.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle escape device, comprising a vehicle chassis (1), characterized in that: The front and rear ends of the vehicle chassis (1) are respectively connected to a front independent suspension (2) and a rear independent suspension (3); two independently driven front wheels (4) are arranged on both sides of the front independent suspension (2); two independently driven rear wheels (5) are arranged on both sides of the rear independent suspension (3); a driving steering front axle is connected between the two independently driven front wheels (4); a driving steering rear axle is connected between the two independently driven rear wheels (5); driving and steering are achieved between the driving steering front axle and the driving steering rear axle through a steering controller, a differential and a mechanical shaft; and braking is achieved by electric brake assemblies (6) for the independently driven front wheels (4) and the independently driven rear wheels (5); The front independent suspension (2) and the rear independent suspension (3) both comprise a connecting slide (31), support vertical frames (32) are arranged on both sides of the connecting slide (31), a sliding connection assembly (33) is arranged between the connecting slide (31) and the support vertical frame (32), the top end of the support vertical frame (32) is rotatably connected to a mounting cross frame (35), the end of the mounting cross frame (35) away from the support vertical frame (32) is rotatably connected to a mounting vertical frame (34), a buffer and lifting assembly (7) is installed inside the mounting vertical frame (34), and the mounting vertical frame (34) and the connecting slide (31) are both connected to the vehicle bottom frame (1); The sliding connection assembly (33) comprises two groups of transverse slide rails (331) connected to the side wall of the slide frame (31) and a group of longitudinal slide rails (333) fixed to the side wall of the supporting vertical frame (32), transverse and longitudinal assembly sliding sleeves (332) are arranged between the transverse slide rails (331) and the longitudinal slide rails (333), and the transverse and longitudinal assembly sliding sleeves (332) are respectively slidably connected to the transverse slide rails (331) and the longitudinal slide rails (333); A breakaway support assembly (8) is provided at the front and rear ends of the vehicle chassis (1) near the front independent suspension (2) and the rear independent suspension (3), respectively; the top end of the breakaway support assembly (8) is connected to a push assembly (9) via an electromagnet positioning pin (10); and the push assembly (9) is connected to the transverse and longitudinal assembly sliding sleeves (332); The escape support assembly (8) comprises a fixing plate (85) fixed on the inner wall of the vehicle bottom frame (1), a pressure rod (83) is connected through the center of the fixing plate (85), the electromagnet positioning pin (10) is installed on the top of the pressure rod (83), a support plate (84) is fixed to the bottom of the pressure rod (83), both side walls of the support plate (84) are connected to steel wheels (86), a pressure plate (81) is fixed to the outer surface of the pressure rod (83), and a spring body (82) is fixed between the pressure plate (81) and the fixing plate (85); The pushing assembly (9) comprises a push plate (91), a positioning sleeve (93) is provided on the outer surface sliding sleeve of the push plate (91), and the positioning sleeve (93) is fixed to the vehicle bottom frame (1); an inclined opening (92) is provided on the surface of one end of the push plate (91) close to the escape support assembly (8), and the inclined opening (92) is separated from or connected to the electromagnet positioning pin (10); an end of the push plate (91) away from the escape support assembly (8) is connected to a lifting rod (94), and the lifting rod (94) is connected to the transverse and longitudinal assembly sleeves (332) via a connecting frame (95).

2. A vehicle escape device according to claim 1, characterized in that: The buffer and lifting assembly (7) comprises a buffer shock absorbing spring (71) and an oil cylinder (72), wherein the bottom end of the oil cylinder (72) is rotatably connected to the mounting vertical frame (34), the piston end of the oil cylinder (72) is connected to an N-shaped bracket mounted at the bottom end of the buffer shock absorbing spring (71), the top end of the buffer shock absorbing spring (71) is rotatably connected to the power arm end (351) of the mounting horizontal frame (35), and the telescopic end of the oil cylinder (72) is used to lift the mounting horizontal frame (35) upward when it is extended.

3. A vehicle escape device according to claim 1, characterized in that: The supporting vertical frames (32) of the front independent suspension (2) and the rear independent suspension (3) are respectively connected to the brackets of the driving steering front axle and the driving steering rear axle.

4. The vehicle escape device according to claim 1, characterized in that: The electric brake assembly (6) comprises a front brake pump body (61), a rear brake pump body (62), a foot brake pedal (63), an electric rear brake push rod motor (64), an electric front brake push rod motor (65), a front brake pump push rod (66), a rear brake pump push rod (67), a rear brake motor push rod (68), and a front brake motor push rod (69); The front brake pump body (61) and the rear brake pump body (62) are respectively connected to the corresponding front brake pump push rod (66) and the rear brake pump push rod (67); the electric rear brake push rod motor (64) and the electric front brake push rod motor (65) are respectively connected to the corresponding rear brake motor push rod (68) and the front brake motor push rod (69); the rear brake motor push rod (68) and the front brake motor push rod (69) are respectively unidirectionally connected through the corresponding first pins (610) on the front brake pump push rod (66) and the rear brake pump push rod (67); the foot brake pedal (63) is respectively unidirectionally connected to the front brake pump push rod (66) and the rear brake pump push rod (67) through the second pin (611).

5. A vehicle escape method, according to a vehicle escape device according to any one of claims 1 to 4, characterized in that: Specifically include: S1, when the vehicle is freed from the jam, the electric rear brake push rod motor (64) and the electric front brake push rod motor (65) work alternately; S2, when the vehicle body rises, the electric front brake push rod motor (65) works, the front brake motor push rod (69) pulls the front brake pump push rod (66) to brake the two independently driven front wheels (4), the oil cylinder (72) is pushed out, the vehicle body rises, and the two independently driven rear wheels (5) are forcibly pulled forward by the rising vehicle body, and at the same time, the two independently driven rear wheels (5) are driven by themselves to escape from the jam; S3, when the vehicle body is raised to the position, the electric front brake push rod motor (65) releases the brakes of the two independently driven front wheels (4), and at the same time, the electric rear brake push rod motor (64) works, and the rear brake pump push rod (67) pulls the rear brake pump push rod (67) to brake the two independently driven rear wheels (5). At this time, the oil cylinder (72) retracts, the vehicle body descends, and the independently driven front wheels (4) are forced forward by the descending vehicle body, and at the same time, the two independently driven front wheels (4) drive themselves; S4. When the vehicle body is lowered into position, the electric front brake push rod motor (65) releases the brakes of the two independently driven rear wheels (5) and brakes the independently driven front wheels at the same time, so that the vehicle body rises and reciprocates to achieve escape.

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