阅读说明：本技术 汽车维修的车体抬升转移装置与工作方法 (Vehicle body lifting and transferring device for vehicle maintenance and working method ) 是由 郭丹丹 郭爱国 周攒 许志鹏 陈安柱 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种汽车维修的车体抬升转移装置,包括等待抬升转移的汽车；还包括汽车后轮抬升机构,所述汽车后轮抬升机构能将所述汽车的后轮抬升至脱离地面,并且汽车后轮抬升机构能沿地面行走；本发明的采用抱合结构,车轮被抬升过程稳定,而且抓地滚轮在车体被抬升后还起到了驱动轮的作用。(The invention discloses a vehicle body lifting and transferring device for vehicle maintenance, which comprises a vehicle waiting for lifting and transferring; the lifting mechanism of the rear wheel of the automobile can lift the rear wheel of the automobile to be separated from the ground, and the lifting mechanism of the rear wheel of the automobile can walk along the ground; the invention adopts a clasping structure, the lifting process of the wheels is stable, and the ground-catching roller also plays a role of a driving wheel after the vehicle body is lifted.)

1. The vehicle body lifting and transferring device for vehicle maintenance comprises a vehicle waiting to be lifted and transferred; the method is characterized in that: the automobile rear wheel lifting mechanism can lift the rear wheel (1) of the automobile to be separated from the ground (3), and the automobile rear wheel lifting mechanism can walk along the ground.

2. The auto servicing body lift transfer set of claim 1, wherein: the automobile rear wheel lifting mechanism comprises a bearing seat (119), a horizontal rear rotating shaft (118) is rotatably arranged in the bearing seat (119) through a bearing, and the rear rotating shaft (118) is vertical to the front and back direction; two ends of the rear rotating shaft (118) are respectively connected with a first supporting wheel (116) and a second supporting wheel (117) coaxially; the first supporting wheel (116) and the second supporting wheel (117) are matched with the ground in a rolling way;

the bearing seat (119) is fixedly connected with a rear arc-shaped holding piece (101) through a supporting arm (121), and an A concave arc surface (101.1) of the rear arc-shaped holding piece (101) is coaxially attached to a wheel surface (1.1) at the middle height of the rear side of the rear wheel (1);

one side of the rear arc-shaped enclasping piece (101) is fixedly connected with a hydraulic expansion piece (102) through a first fixing frame (100), the front part of the hydraulic expansion piece (102) comprises two parallel expansion rods (32), and each expansion rod (32) is an inclined rod which is short in front and high in back and forms an included angle with the ground (3);

the front ends of the two parallel telescopic rods (32) are vertically connected with a limiting piece (114); the side part of the limiting piece (114) is fixedly connected with a front arc-shaped holding piece (115), and a B-shaped concave arc surface (115.1) of the front arc-shaped holding piece (115) is coaxially attached to a front lower side wheel surface (1.1) of the rear wheel (1); the stretching out and retracting of the telescopic rod (32) can drive the rear arc-shaped enclasping piece (101) and the front arc-shaped enclasping piece (115) to move close to or away from each other;

the telescopic rod type telescopic rod device is characterized by further comprising a guide hole seat (34), wherein two guide holes (38) are arranged on the guide hole seat (34) in a penetrating mode, and the two telescopic rods (32) respectively penetrate through the two guide holes (38) in a sliding mode, so that the guide hole seat (34) can freely slide along the length direction of the telescopic rods (32);

a mechanism support (103) is fixedly connected to one side of the guide hole seat (34), a second bearing seat (108) is fixedly mounted on the lower side of the tail end of the mechanism support (103), a horizontal floating rotating shaft (109) is rotatably mounted in a bearing hole in the lower end of the second bearing seat (108) through a bearing, and the floating rotating shaft (109) is parallel to the rear rotating shaft (118); a turbine (110) and a ground grabbing wheel (19) are respectively and integrally connected with the floating rotating shaft (109) coaxially, and the ground grabbing wheel (19) is matched with the ground (3) in a rolling manner; one side fixed mounting of mechanism support (103) has motor support (104), fixed mounting has scroll bar driving motor (105) on motor support (104), be connected with worm (107) with the axle center on output shaft (106) of worm motor (105), worm (107) with turbine (110) transmission fit.

3. The auto servicing body lift transfer set of claim 1, wherein: when the rear wheel (1) is not taken off the ground, the included angle formed by the telescopic rod (32) and the ground (3) ranges from 10 degrees to 30 degrees.

4. The auto servicing body lift transfer set of claim 3, wherein: the inner walls of the two guide holes (38) are coated with lubricating grease.

5. The auto servicing body lift transfer set of claim 4, wherein: the wheel surface of the ground grabbing wheel (19) is provided with anti-skid patterns.

6. The auto servicing body lift transfer set of claim 5, wherein: an expansion piece support (111) is fixedly mounted on one side, away from the motor support (104), of the mechanism support (103), a limiting expansion piece (112) is fixedly mounted on the expansion piece support (111), and a limiting telescopic rod (116) of the limiting expansion piece (112) is perpendicular to the telescopic rod (32); the tail end of the limiting telescopic rod (116) is fixedly connected with a clamping block (113);

when the guide hole seat (34) slides forwards along the length direction of the telescopic rod (32) to contact the rear side surface of the limiting piece (114), the limiting telescopic rod (116) drives the clamping block (113) to extend out, so that the limiting piece (114) is just clamped between the clamping block (113) and the guide hole seat (34).

7. The auto servicing body lift transfer set of claim 1, wherein: the number of the automobile rear wheel lifting mechanisms is two; the automobile rear wheel lifting mechanism is symmetrical to the two automobile front wheel lifting mechanisms; the two automobile rear wheel lifting mechanisms lift two rear wheels of an automobile, and simultaneously, the two automobile front wheel lifting mechanisms lift two front wheels of the automobile; the entire car is then lifted.

8. The rear wheel lifting and transferring device for vehicle body lifting and transferring for vehicle maintenance of claim 6, characterized in that: the rear wheel (1) waiting to be lifted in the initial state is in contact with the ground (3), the hydraulic expansion piece (102) is controlled firstly to enable the expansion rod (32) to extend out, so that the rear arc-shaped holding piece (101) and the front arc-shaped holding piece (115) are located at a sufficient distance, then the rear arc-shaped holding piece (101) is arranged on the rear side of the rear wheel (1), the front arc-shaped holding piece (115) is arranged on the front side of the rear wheel (1), and the hydraulic expansion piece (102) is controlled to enable the expansion rod (32) to retract gradually, so that the rear arc-shaped holding piece (101) and the front arc-shaped holding piece (115) are close to the front side and the rear side of the holding rear wheel (1); at the moment, the A concave cambered surface (101.1) of the rear arc-shaped holding piece (101) is coaxially attached to the wheel surface (1.1) at the middle height of the rear side of the rear wheel (1); the B-concave cambered surface (115.1) of the front arc-shaped holding piece (115) is coaxially attached to the front lower side wheel surface (1.1) of the rear wheel (1), and the hydraulic expansion piece (102) is locked at the moment;

then the worm motor (105) is controlled, and the worm (107) drives the turbine (110) to rotate slowly anticlockwise, so that the ground-grabbing wheel (19) rotates anticlockwise, as the ground grabbing wheel (19) is matched with the ground in a rolling way, the counterclockwise rotation of the ground grabbing wheel (19) can lead the ground grabbing wheel (19) to roll forwards on the ground (3), the ground grabbing wheel (19) rolling forwards can drive the guide hole seat (34) to synchronously move forwards, because the telescopic rod (32) is an inclined rod which forms an included angle with the ground (3) and is short in front and high in back, therefore, the included angle formed by the telescopic rod (32) and the ground (3) is gradually reduced in the process that the guide hole seat (34) moves forwards, according to the geometrical relationship, the front end of the telescopic rod (32) is gradually lifted, so that the rear wheel (1) is gradually separated from the ground (3) on the basis of the tight holding of the rear arc-shaped holding piece (101) and the front arc-shaped holding piece (115); the rear wheel (1) can form a downward reaction force f to the front arc-shaped holding sheet (115) in the process of leaving the ground, the reaction force f is converted into the pressure between the ground grabbing roller (19) and the ground (3) through the force transmission part, so that the positive correlation between the weight of the automobile and the pressure between the ground grabbing roller (19) and the ground (3) is realized, the ground grabbing performance of the ground grabbing roller (19) is further ensured, and the phenomenon that the ground grabbing roller (19) slips in the forward rolling process is avoided;

the rear wheel (1) continues to be lifted along with the forward rolling of the ground grabbing roller (19), when the hole guide seat (34) slides forwards along the length direction of the telescopic rod (32) to contact the rear side of the limiting sheet (114), the rear wheel (1) is lifted to a preset height, the limiting telescopic rod (116) is controlled to drive the clamping block (113) to extend out, the limiting sheet (114) is just clamped between the clamping block (113) and the hole guide seat (34), and therefore the relative positions of the ground grabbing roller (19) and the first support wheel (116) and the second support wheel (117) cannot change in the subsequent process; the first supporting wheel (116), the second supporting wheel (117) and the ground grabbing roller (19) support a rear wheel (1) together;

when the four wheels of the automobile are lifted according to the method, the worm motors (105) are controlled, so that the ground-grabbing rollers (19) actively rotate, and the lifted automobile is driven to horizontally displace.

Technical Field

The invention belongs to the field of automobile maintenance.

Background

The vehicle moving device is generally of a dragging structure, and the dragging structure can damage the vehicle to a certain extent; at present, there is also a mechanism for lifting the four wheels of the automobile integrally and then moving the automobile, and the mechanism for lifting the tires is also unstable after being lifted, so that it is necessary to design a device for lifting the automobile in situ more stably and then driving the automobile to move horizontally.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the vehicle body lifting and transferring device for vehicle maintenance and the working method, which can lift the vehicle more stably in situ.

The technical scheme is as follows: in order to achieve the purpose, the vehicle body lifting and transferring device for vehicle maintenance comprises a vehicle waiting to be lifted and transferred; the automobile rear wheel lifting mechanism can lift the rear wheels of the automobile to the position where the rear wheels are separated from the ground, and the automobile rear wheel lifting mechanism can walk along the ground.

Furthermore, the automobile rear wheel lifting mechanism comprises a bearing seat, a horizontal rear rotating shaft is rotatably arranged in the bearing seat through a bearing, and the rear rotating shaft is vertical to the front and back direction; two ends of the rear rotating shaft are respectively connected with a first supporting wheel and a second supporting wheel coaxially; the first supporting wheel and the second supporting wheel are matched with the ground in a rolling manner;

the bearing seat is fixedly connected with a rear arc-shaped holding piece through a supporting arm, and the A concave arc surface of the rear arc-shaped holding piece is coaxially attached to the wheel surface at the middle height of the rear side of the rear wheel;

one side of the rear circular arc-shaped holding piece is fixedly connected with a hydraulic expansion piece through a first fixing frame, the front part of the hydraulic expansion piece comprises two parallel expansion rods, and each expansion rod is an inclined rod which forms an included angle with the ground and is short in front and high in back;

the front ends of the two parallel telescopic rods are vertically connected with a limiting piece; the side part of the limiting piece is fixedly connected with a front arc-shaped holding piece, and the B concave arc surface of the front arc-shaped holding piece is coaxially attached to the front lower side wheel surface of the rear wheel; the stretching out and retracting of the telescopic rod can drive the rear arc-shaped holding piece and the front arc-shaped holding piece to move close to or away from each other;

the telescopic rod is characterized by further comprising a guide hole seat, wherein two guide holes are arranged on the guide hole seat in a penetrating mode, and the two telescopic rods respectively penetrate through the two guide holes in a sliding mode, so that the guide hole seat can freely slide along the length direction of the telescopic rods;

a mechanism support is fixedly connected to one side of the guide hole seat, a second bearing seat is fixedly mounted on the lower side of the tail end of the mechanism support, a horizontal floating rotating shaft is rotatably mounted in a bearing hole in the lower end of the second bearing seat through a bearing, and the floating rotating shaft is parallel to the rear rotating shaft; a turbine and a ground grabbing wheel are respectively and coaxially and integrally connected to the floating rotating shaft, and the ground grabbing wheel is in rolling fit with the ground; the mechanism comprises a mechanism support and is characterized in that a motor support is fixedly mounted on one side of the mechanism support, a worm rod driving motor is fixedly mounted on the motor support, a worm is coaxially connected to an output shaft of the worm motor, and the worm is in transmission fit with a worm wheel.

Further, when the rear wheel is not detached from the ground, the included angle formed between the telescopic rod and the ground ranges from 10 degrees to 30 degrees.

Furthermore, the inner walls of the two guide holes are coated with lubricating grease.

Furthermore, the wheel surface of the ground grabbing wheel is provided with anti-skid patterns.

Further, an expansion piece bracket is fixedly mounted on one side of the mechanism bracket, which is far away from the motor bracket, a limiting expansion piece is fixedly mounted on the expansion piece bracket, and a limiting expansion rod of the limiting expansion piece is perpendicular to the expansion rod; the tail end of the limiting telescopic rod is fixedly connected with a clamping block;

when the guide hole seat slides forwards along the length direction of the telescopic rod to contact the rear side face of the limiting piece, the limiting telescopic rod drives the clamping block to extend out, so that the limiting piece is just clamped between the clamping block and the guide hole seat.

Furthermore, the number of the automobile rear wheel lifting mechanisms is two; the automobile rear wheel lifting mechanism is symmetrical to the two automobile front wheel lifting mechanisms; the two automobile rear wheel lifting mechanisms lift two rear wheels of an automobile, and simultaneously, the two automobile front wheel lifting mechanisms lift two front wheels of the automobile; the entire car is then lifted.

Further, the rear wheel lifting method of the automobile body lifting and transferring device for automobile maintenance comprises the following steps:

in an initial state, a rear wheel waiting to be lifted is in contact with the ground, a hydraulic expansion piece is controlled firstly to enable a telescopic rod to extend out, so that a rear arc-shaped holding piece and a front arc-shaped holding piece are located at positions far enough, then the rear arc-shaped holding piece is arranged on the rear side of the rear wheel, the front arc-shaped holding piece is arranged on the front side of the rear wheel, and the hydraulic expansion piece is controlled to enable the telescopic rod to retract gradually, so that the rear arc-shaped holding piece and the front arc-shaped holding piece are close to the front side and the rear side of the rear wheel; the concave cambered surface A of the rear arc-shaped holding piece is coaxially attached to the wheel surface at the middle height of the rear side of the rear wheel; the B concave cambered surface of the front arc-shaped holding piece is coaxially attached to the front lower side wheel surface of the rear wheel, and the hydraulic expansion piece is locked;

then controlling a worm motor, further driving a turbine to slowly rotate anticlockwise by a worm, so that a ground grabbing wheel rotates anticlockwise, and the ground grabbing wheel is matched with the ground in a rolling manner, so that the ground grabbing wheel can roll forwards on the ground by the anticlockwise rotation of the ground grabbing wheel, the forward rolling ground grabbing wheel can reversely drive a guide hole seat to synchronously move forwards along with the ground grabbing wheel, and the telescopic rod at the moment is a slant rod which is short in front and high in back and forms an included angle with the ground, so that the included angle formed by the telescopic rod and the ground in the forward movement process of the guide hole seat can be gradually reduced, and the front end of the telescopic rod can be gradually lifted according to the geometric relation, so that the rear wheel can be gradually separated from the ground on the basis of tight holding of the rear arc-shaped holding sheet and the front arc-shaped holding sheet; the rear wheel can form a downward reaction force f to the front arc-shaped holding sheet in the process of leaving the ground, and the reaction force f is converted into pressure between the ground gripping roller and the ground through the force transmission part, so that the positive correlation between the weight of the automobile and the pressure between the ground gripping roller and the ground is realized, the ground gripping performance of the ground gripping roller is further ensured, and the phenomenon of slipping in the process of forward rolling of the ground gripping roller is avoided;

the rear wheel is continuously lifted along with the continuous forward rolling of the ground grabbing roller, when the guide hole seat slides forwards along the length direction of the telescopic rod to contact the rear side of the limiting piece, the rear wheel is indicated to be lifted to a preset height, and the limiting telescopic rod is controlled to drive the clamping block to extend out, so that the limiting piece is just clamped between the clamping block and the guide hole seat, and the relative positions of the ground grabbing roller and the first supporting wheel and the second supporting wheel cannot be changed in the subsequent process; at the moment, the first supporting wheel, the second supporting wheel and the ground grabbing roller wheel support a rear wheel together;

when the four wheels of the automobile are lifted according to the method, the worm motors are controlled, so that the ground grabbing idler wheels rotate actively, and the lifted automobile is driven to move horizontally.

Has the advantages that: the invention adopts a clasping structure, the lifting process of the wheels is stable, and the ground-catching idler wheel also plays a role of a driving wheel after the vehicle body is lifted; the rear wheel can form a decurrent reaction force f to preceding circular arc holding tightly piece at liftoff in-process, reaction force f converts the pressure of grabbing between ground gyro wheel and the ground through power transmission part to realized that the weight of car and the pressure of grabbing between ground gyro wheel and the ground are positive correlation, and then guaranteed the "performance of grabbing the ground gyro wheel", avoid grabbing the phenomenon that the gyro wheel rolled in-process takes place to skid forward.

Drawings

FIG. 1 is a schematic view of the overall structure of the device (rear wheels are not lifted off the ground);

FIG. 2 is a schematic view from another perspective of FIG. 1;

FIG. 3 is a schematic illustration of the rear wheel lift mechanism of the vehicle shown in FIG. 1 separated from the rear wheels of the vehicle;

FIG. 4 is a schematic diagram of the rear wheel of the vehicle being lifted by the rear wheel lifting mechanism;

FIG. 5 is an enlarged schematic view at 120 of FIG. 4;

FIG. 6 is a schematic view of the rear wheel shown without the ground off;

fig. 7 is a schematic view of the rear wheel when riding off the ground.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The vehicle body lifting and transferring device for vehicle maintenance as shown in fig. 1 to 7 comprises a vehicle waiting to be lifted and transferred; the method is characterized in that: the automobile rear wheel lifting mechanism can lift the rear wheel 1 of the automobile to a position where the rear wheel is separated from the ground 3, and the automobile rear wheel lifting mechanism can walk along the ground.

The automobile rear wheel lifting mechanism comprises a bearing seat 119, a horizontal rear rotating shaft 118 is rotatably arranged in the bearing seat 119 through a bearing, and the rear rotating shaft 118 is vertical to the front and back direction; two ends of the rear rotating shaft 118 are coaxially connected with a first supporting wheel 116 and a second supporting wheel 117 respectively; the first supporting wheel 116 and the second supporting wheel 117 are matched with the ground in a rolling way;

the bearing seat 119 is fixedly connected with a rear arc-shaped holding piece 101 through a supporting arm 121, and an A concave arc surface 101.1 of the rear arc-shaped holding piece 101 is coaxially attached to a wheel surface 1.1 at the middle height of the rear side of the rear wheel 1;

one side of the rear circular arc-shaped enclasping piece 101 is fixedly connected with a hydraulic expansion piece 102 through a first fixing frame 100, the front part of the hydraulic expansion piece 102 comprises two parallel expansion rods 32, and each expansion rod 32 is an inclined rod which is short in front and high in rear and forms an included angle with the ground 3;

the front ends of the two parallel telescopic rods 32 are vertically connected with a limiting piece 114; the side part of the limiting piece 114 is fixedly connected with a front arc-shaped enclasping piece 115, and a B concave arc surface 115.1 of the front arc-shaped enclasping piece 115 is coaxially attached to a front lower side wheel surface 1.1 of the rear wheel 1; the extension and retraction of the telescopic rod 32 can drive the rear arc-shaped enclasping piece 101 and the front arc-shaped enclasping piece 115 to move close to or away from each other;

the telescopic rod device further comprises a guide hole seat 34, wherein two guide holes 38 are arranged on the guide hole seat 34 in a penetrating way, and the two telescopic rods 32 respectively slide through the two guide holes 38, so that the guide hole seat 34 can freely slide along the length direction of the telescopic rods 32;

a mechanism support 103 is fixedly connected to one side of the guide hole seat 34, a second bearing seat 108 is fixedly installed at the lower side of the tail end of the mechanism support 103, a horizontal floating rotating shaft 109 is rotatably installed in a bearing hole at the lower end of the second bearing seat 108 through a bearing, and the floating rotating shaft 109 is parallel to the rear rotating shaft 118; a turbine 110 and a ground grabbing wheel 19 are coaxially and integrally connected to the floating rotating shaft 109 respectively, and the ground grabbing wheel 19 is in rolling fit with the ground 3; a motor support 104 is fixedly mounted on one side of the mechanism support 103, a worm driving motor 105 is fixedly mounted on the motor support 104, a worm 107 is coaxially connected to an output shaft 106 of the worm motor 105, and the worm 107 is in transmission fit with the worm wheel 110.

When the rear wheel 1 is not detached from the ground, the included angle formed by the telescopic rod 32 and the ground 3 ranges from 10 degrees to 30 degrees; the inner walls of the two guide holes 38 of the present embodiment are coated with grease; the wheel surface of the ground grabbing wheel 19 is provided with anti-skid patterns.

An expansion piece bracket 111 is fixedly installed on one side, away from the motor bracket 104, of the mechanism bracket 103, a limiting expansion piece 112 is fixedly installed on the expansion piece bracket 111, and a limiting expansion rod 116 of the limiting expansion piece 112 is perpendicular to the expansion rod 32; the tail end of the limiting telescopic rod 116 is fixedly connected with a clamping block 113;

when the guide hole seat 34 slides forward along the length direction of the telescopic rod 32 to contact the rear side of the limiting piece 114, the limiting telescopic rod 116 drives the clamping block 113 to extend out, so that the limiting piece 114 is just clamped between the clamping block 113 and the guide hole seat 34.

The number of the automobile rear wheel lifting mechanisms is two; the automobile rear wheel lifting mechanism is symmetrical to the two automobile front wheel lifting mechanisms; the two automobile rear wheel lifting mechanisms lift two rear wheels of an automobile, and simultaneously, the two automobile front wheel lifting mechanisms lift two front wheels of the automobile; the entire car is then lifted.

The general process and the working principle of the rear wheel lifting and transferring device for the automobile maintenance are as follows:

in an initial state, the rear wheel 1 waiting to be lifted is in contact with the ground 3, the hydraulic expansion piece 102 is controlled firstly to enable the expansion link 32 to extend out, so that the rear arc-shaped holding piece 101 and the front arc-shaped holding piece 115 are located at positions far enough, then the rear arc-shaped holding piece 101 is arranged at the rear side of the rear wheel 1, the front arc-shaped holding piece 115 is arranged at the front side of the rear wheel 1, and at this time, the hydraulic expansion piece 102 is controlled to enable the expansion link 32 to retract gradually, so that the rear arc-shaped holding piece 101 and the front arc-shaped holding piece 115 are close to the front side and the rear side of the rear wheel 1; at the moment, the A concave cambered surface 101.1 of the rear arc-shaped enclasping piece 101 is coaxially attached to a wheel surface 1.1 at the middle height of the rear side of the rear wheel 1; the B concave cambered surface 115.1 of the front arc-shaped enclasping piece 115 is coaxially attached to the front lower side wheel surface 1.1 of the rear wheel 1, and the hydraulic expansion piece 102 is locked at this time;

then the worm motor 105 is controlled, and the worm 107 drives the worm wheel 110 to slowly rotate anticlockwise, so that the ground grabbing wheel 19 rotates anticlockwise, the ground grabbing wheel 19 is in rolling fit with the ground, the anticlockwise rotation of the ground grabbing wheel 19 can enable the ground grabbing wheel 19 to roll forwards on the ground 3, the forward rolling ground grabbing wheel 19 can in turn drive the guide hole seat 34 to synchronously move forwards, and the telescopic rod 32 is a slant rod which is short in front and high in back and forms an included angle with the ground 3 at the moment, so that the included angle formed by the telescopic rod 32 and the ground 3 in the forward movement process of the guide hole seat 34 can be gradually reduced, and according to the geometrical relationship, the front end of the telescopic rod 32 can be gradually lifted, so that the rear wheel 1 can be gradually separated from the ground 3 on the basis of tight holding of the rear holding piece 101 and the front arc holding piece 115; the rear wheel 1 can form a downward reaction force f to the front arc-shaped holding sheet 115 in the process of leaving the ground, and the reaction force f is converted into pressure between the ground grabbing roller 19 and the ground 3 through a force transmission part, so that the positive correlation between the weight of the automobile and the pressure between the ground grabbing roller 19 and the ground 3 is realized, the ground grabbing performance of the ground grabbing roller 19 is further ensured, and the phenomenon of slipping in the process of forward rolling of the ground grabbing roller 19 is avoided;

the rear wheel 1 continues to be lifted along with the forward rolling of the ground grabbing roller 19, when the guide hole seat 34 slides forward along the length direction of the telescopic rod 32 to contact the rear side of the limiting piece 114, which indicates that the rear wheel 1 is lifted to a preset height at this time, the limiting telescopic rod 116 is controlled to drive the clamping block 113 to extend out, so that the limiting piece 114 is just clamped between the clamping block 113 and the guide hole seat 34, and the relative positions of the ground grabbing roller 19 and the first supporting wheel 116 and the second supporting wheel 117 cannot change in the subsequent process; the first supporting wheel 116, the second supporting wheel 117 and the ground grabbing roller 19 support a rear wheel 1 together;

when the four wheels of the automobile are lifted according to the method, the worm motors 105 are controlled, so that the ground grabbing idler wheels 19 rotate actively, and the lifted automobile is driven to move horizontally.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.