CN108266029B

CN108266029B - Self-supporting pushing-lifting type automobile carrier

Info

Publication number: CN108266029B
Application number: CN201611261550.4A
Authority: CN
Inventors: 张明勤; 姚玉善; 原政军; 王晴; 成巍; 程钢; 曲胜; 张建雷; 梁贺
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2020-02-04
Anticipated expiration: 2036-12-30
Also published as: CN108266029A

Abstract

The invention discloses a self-supporting push-up type automobile carrier, wherein a chassis is provided with a traveling mechanism and a push-up mechanism comprising an air spring, a front sliding table and a rear sliding table which can move along a longitudinal guide rail on the chassis are connected with each other through the push-up mechanism, and a front push-up arm group and a rear push-up arm group are correspondingly connected with the front sliding table and the rear sliding table; a pushing motor in the pushing mechanism is arranged on a front sliding table of the bottom frame, the input end of a clutch is connected with the output shaft of the pushing motor, the output end of the clutch is connected with a transmission shaft of a chain wheel in the chain transmission mechanism, rod end connectors of a gas spring are respectively arranged on the left side and the right side of the chain wheel and connected to the transmission shaft of the chain wheel, and the pipe end connectors of the gas spring are fixedly connected to a rear sliding table of the bottom frame; one end of a chain in the chain transmission mechanism bypasses a chain wheel and is connected with a rope collecting device on a cross beam at the rear end of the underframe through a steel wire rope, and the other end of the chain is fixedly connected with an outer tube of the air spring. The lifting device is simple in structure, the air spring is automatically adjusted, the lifting process is rapid and stable, and the energy loss is small.

Description

Self-supporting pushing-lifting type automobile carrier

Technical Field

The invention relates to an automobile carrier, in particular to a self-supporting push-lifting type automobile carrier suitable for a stereo garage for parking and taking, and belongs to the technical field of stereo parking equipment.

Background

The speed of the automobile carrier for the stereo garage for carrying the automobile directly influences the time for storing and taking the automobile, and the popularization and the application of the stereo garage are also influenced to a great extent. The existing automobile carrier carrying technology of the stereo garage mainly takes an automobile carrying plate type, a comb-tooth type and a clamping type as main parts, the automobile carrying plate type carrier is simple and reliable, but a returning action process or an automobile carrying plate loading process is inevitable when the automobile is stored and taken, the automobile cannot be directly stored and taken, the time for storing and taking the automobile is increased, and the working efficiency is lower; the comb-tooth type carrier and the vehicle carrying platform are matched with each other, and the comb teeth of the carrier and the comb teeth of the vehicle carrying platform are staggered up and down, so that the vehicle carrying is rapid and efficient, but the space utilization rate is low, the installation and the positioning are complex, and the garage cost is high; the clamping type carrier can directly carry the automobile, the working mode is quick and efficient, but the structure is complex, and the requirement on positioning control is high.

The automobile transverse carrying robot disclosed in the invention patent CN103590634A can reach the parking equipment carrying/exchanging trolley to the parking position/parking space center for parking, and is driven by the running mechanism to transversely enter the bottom of the automobile under the intelligent control system, and then the spreading and retracting mechanism pushes the two arms to spread between the front and rear tires of the automobile to be carried, the roller sleeves on the arms roll along the tires to lift the automobile, and then the automobile is carried; the carrier generates radial force on the tire to support the tire, has little damage to the automobile tire, but has higher requirement on an intelligent control system, and the angular position motion control of the four groups of roller sleeves is more complicated. In the invention patent CN105545047A, a left pushing and lifting mechanism adopts two-stage sliding telescopic arms, and a right pushing and lifting mechanism adopts a single-stage sliding telescopic arm, so that when storing and taking out a vehicle, the pushing and lifting arms are pushed in parallel at the same time, and only radial force is generated to a tire, and the structure is compact, but the structure of the pushing and lifting mechanism is complex and the number of transmission pairs is large. The carrier disclosed in the above patent is adapted to laterally carry automobiles and cannot be adjusted for automobiles with different wheel tracks. The invention discloses a bidirectional parallel pushing-lifting type intelligent automobile carrier disclosed in patent CN105604367A, which vertically enters the bottom of an automobile, wherein a pushing-lifting arm in a pushing-lifting mechanism is connected with a sliding plate and a driving mechanism, and the linear motion of the sliding plate is guided by the guide groove to force the pushing-lifting arm to do rotary swing and linear motion by utilizing the matching of an L-shaped guide groove on the sliding plate and a guide groove plate on a chassis and the pushing-lifting arm, so that the rotating expansion and folding motions of the pushing-lifting arm are realized, and then the tire is pushed and lifted by the pushing-lifting arm through the linear motion; the carrier forces the pushing and lifting arm to change the motion curve by means of the guide groove, the pushing and lifting arm is easy to clamp, and the front pushing and lifting mechanism and the rear pushing and lifting mechanism are respectively driven independently, so that the phenomenon of asynchronous motion of the pushing and lifting mechanisms is difficult to avoid.

Disclosure of Invention

The invention solves the technical problem that a self-supporting push-lift type automobile carrier is provided, the carrier simultaneously pushes front and rear tires of an automobile by adopting a working mode that a push-lift mechanism automatically supports, the carrier longitudinally enters a rear push-lift mechanism at the bottom of the automobile to enable a push-lift arm to longitudinally move relative to an underframe, a jacking force is transmitted to the front and rear tires of the automobile, the automobile is quickly lifted, the energy loss is small, and the structural composition and the electrical control of the carrier are simplified.

The technical scheme adopted by the invention is as follows: the self-supporting lifting type automobile carrier is provided with a bottom frame, a traveling mechanism, a front lifting arm set and a rear lifting arm set are arranged on the bottom frame, and a lifting mechanism containing an air spring is arranged on the bottom frame.

The self-supporting push-lifting type automobile carrier adopting the structure has a light and handy whole structure, can automatically support the push-lifting arm group relative to the longitudinal line direction of the underframe under the action of the push-lifting mechanism containing the gas spring, provides power for the push-lifting arm to push and lift the automobile tire, and is self-adaptive to automobile carrying with different wheelbases due to the structural characteristics of automatic support; the pushing and lifting mechanism is used as an independent drive of the integral carrier, and has the advantages of simple structure, convenient adjustment and control, rapid wheel lifting and higher synchronism.

In the chassis: the longitudinal guide rails which are symmetrically arranged and the cross beams which are connected with the front end and the rear end of the longitudinal guide rails form a frame structure; the front sliding table and the rear sliding table can move along the longitudinal guide rail and are connected with each other through the pushing and lifting mechanism; the front pushing and lifting arm group is correspondingly connected with the front sliding table, the rear pushing and lifting arm group is correspondingly connected with the rear sliding table, and the pushing and lifting arm groups can respectively move linearly along the corresponding sliding tables; the push-up mechanism comprises: the pushing and lifting motor is arranged on the front sliding table of the bottom frame; the input end of the clutch is connected with the output shaft of the boosting motor, and the output end of the clutch is connected with the transmission shaft of the chain wheel in the chain transmission mechanism; the end joints of the rod of the gas spring are respectively arranged at the left side and the right side of the chain wheel and are connected to a transmission shaft of the chain wheel through bearings, and the end joints of the gas spring are fixedly connected to a rear sliding table of the bottom frame; one end of a chain in the chain transmission mechanism bypasses a chain wheel and is connected with a rope collecting device on a cross beam at the rear end of the underframe through a steel wire rope, and the other end of the chain is fixedly connected with an outer tube of the air spring.

According to the arrangement, when the air spring is in a shortened state, the air spring automatically stretches after the clutch is opened, the front sliding table and the rear sliding table move back to back along the longitudinal guide rail, and the front pushing and lifting arm group longitudinally props up and pushes up the tire relative to the frame structure of the bottom frame. Because the gas spring extends freely, the synchronous lifting of the automobile tires is not influenced no matter the front push-up arm group or the rear push-up arm group contacts the automobile tires at the same time or sequentially. Therefore, the structure and the control of the carrier are simple and feasible, and the lifting synchronism of the front tire and the rear tire of the automobile is good. The clutch is closed, the pushing motor is started, and the chain pulls the gas spring to return to a shortened state under the action of the chain transmission mechanism.

The chassis also comprises stretching and collecting mechanisms positioned between the front pushing and lifting arm groups and between the rear pushing and lifting arm groups, and stretching and collecting motors in the stretching and collecting mechanisms are respectively arranged on the front sliding table and the rear sliding table of the chassis; the output shaft of the stretching and retracting motor is connected with double rows of driving chain wheels, and the driven chain wheels are respectively arranged at two ends of the front sliding table and the rear sliding table; two pushing and lifting arms in the same pushing and lifting arm group are respectively connected with corresponding chains to enable the moving directions of the two pushing and lifting arms to be opposite. And the two push-up arms in the front push-up arm group are respectively connected with the two push-up arms in the rear push-up arm group through telescopic pipes.

According to the arrangement, the pushing arm can be extended and retracted under the action of the extending and retracting mechanism, so that the automobile lifting mechanism can be self-adaptive to automobile transportation with different wheel tracks. The double-row driving chain wheel can synchronously transmit power to two lifting arms in the same lifting arm group. Two lifting arms in the front lifting arm group are respectively connected with two lifting arms in the rear lifting arm group through telescopic pipes, and the front and rear lifting arm groups are restricted with each other, so that the front and rear lifting arm groups move coordinately.

The end part of the push-up arm is provided with a push-up hand, and the front end of the push-up hand is provided with a roller; when the automobile tire is pushed, the front-end roller is close to but does not reach the diameter line of the tire in the vertical direction. The arrangement ensures that the lifting hand is easy to be separated from the automobile tire when the lifting arm group is retracted relative to the longitudinal guide rail of the underframe.

Drawings

Fig. 1 is a plan view of a push-up arm according to an embodiment of the present invention in a push-up state.

Fig. 2 is an enlarged view of a portion of the structure of fig. 1.

FIG. 3 is a front view of the push-up arm of the embodiment of the present invention in a push-up position.

Fig. 4 is a plan view of the embodiment of the present invention in a state of waiting for parking and taking in the vehicle.

Fig. 5 is a schematic view of the vehicle in the state of waiting for parking and taking when the vehicle travels to the bottom of the vehicle according to the embodiment of the invention.

Fig. 6 is a schematic diagram of the vehicle tire in a state after being pushed up according to the embodiment of the invention.

In the drawing, 1, a front beam 2, a longitudinal guide rail 3, a front sliding table 4, a front left lifting arm 5, a roller 6, a front left lifting hand 7, a telescopic tube a section 8, a telescopic tube b section 9, a rear left lifting hand 10, a rear left lifting arm 11, a rear sliding table 12, a rope collector 13, a steel wire rope 14, a rear beam 15, a rear right lifting arm 16, a rear right lifting hand 17, a pipe end connector 18, an outer tube 19, an air spring 20, a walking motor 21, a guide wheel 22, a front right lifting hand 23, a front right lifting arm 24, a stretching right chain 25, a stretching motor 26, an output shaft 27, a stretching left chain 28, a pushing motor 29, a clutch 30, a pushing chain 31, an adapter 32, a pushing switching chain 33, a piston rod 34 and a rod end connector are arranged in sequence.

Detailed Description

The following describes embodiments of the present invention with reference to the above drawings.

As shown in fig. 1 to 6, the self-supporting lift-type vehicle carrier of the present invention comprises a chassis, longitudinal guide rails 2 symmetrically arranged on the chassis, and a front cross beam 1 and a rear cross beam 14 connected with the front and rear ends of the longitudinal guide rails to form a frame structure; the front sliding table 3 and the rear sliding table 11 can both move linearly along the longitudinal guide rail 2, and the front sliding table 3 and the rear sliding table 11 are connected with each other through a pushing mechanism. The front pushing and lifting arm group, namely the front left pushing and lifting arm 4 and the front right pushing and lifting arm 23, is correspondingly connected with the front sliding table 3, the rear pushing and lifting arm group, namely the rear left pushing and lifting arm 10 and the rear right pushing and lifting arm 15, is correspondingly connected with the rear sliding table 11, the front pushing and lifting arm group can linearly move along the front sliding table 3, and the rear pushing and lifting arm group can linearly move along the rear sliding table 11. The chassis is provided with a running mechanism which is provided with two running motors 20 arranged on the longitudinal guide rail 2 and four guide wheels 21 symmetrically arranged on the two outer sides of the longitudinal guide rail 2, and the two running motors 20 respectively and independently drive any two guide wheels 21 positioned at the opposite angles. A push-up motor 28 in the push-up mechanism is arranged on the front sliding table 3 of the underframe; the input end of the clutch 29 is connected with the output shaft of the boosting motor 28, and the output end of the clutch 29 is connected with the transmission shaft of the chain wheel in the chain transmission mechanism; the air spring 19, its rod end joint 34 is listed in the left and right sides of the sprocket separately and connected to drive shaft of the sprocket through the bearing, its pipe end joint 17 is affixed to the back slide 11 of the underframe; for convenient installation, a push-up chain 30 in the chain transmission mechanism is meshed with a chain wheel, the upper side end of the push-up chain 30 is connected with a push-up switching chain 32 into a whole through a switching head 31, the lower side end of the push-up chain 30 is connected with the extending end of a steel wire rope 13 in a rope collector 12, and the rope collector 12 is fixed on a rear cross beam 14 of the underframe; the end of the integral chain composed of the pushing and lifting chain 30 and the pushing and lifting switching chain 32 is fixedly connected with the outer tube 18 of the gas spring. The chassis also comprises stretching and retracting mechanisms positioned between the front pushing and lifting arm groups and between the rear pushing and lifting arm groups, and stretching and retracting motors 25 in the stretching and retracting mechanisms are respectively arranged on the front sliding table 3 and the rear sliding table 11 of the chassis; the output shaft 26 of the stretching motor is connected with double rows of driving chain wheels, the driven chain wheels are respectively arranged at two ends of the front sliding table 3 and the rear sliding table 11, the inter-tooth row distance of the double rows of driving chain wheels ensures that the stretching right chain 24 and the stretching left chain 27 do not interfere with each other, and because the moving directions of the double rows of driving chain wheels and the driven chain wheels at two ends are consistent, two lifting arms in the same lifting arm group are respectively connected with corresponding chains to ensure that the moving directions of the two lifting arms are opposite and the strokes are the same, if the front left lifting arm 4 is connected with the upper chain section of the corresponding stretching left chain 27, the front right lifting arm 23 is connected with the lower chain section of the corresponding stretching right chain 24; the rear left push-up arm 10 is connected with the upper chain section of the corresponding chain, and the rear right push-up arm 15 is connected with the lower chain section of the corresponding chain. The double-row main chain wheel simultaneously transmits the motion to chain wheels at two ends of the front sliding table 3 or the rear sliding table 11, and the motion synchronization of two pushing and lifting arms in the same pushing and lifting arm group is ensured. Two lifting arms 5 and 23 in the front lifting arm group are respectively connected with two lifting

arms

10 and 15 in the rear lifting arm group through telescopic pipes, and a telescopic pipe b section 8 can be contracted into a section a 7. The end parts of the push-up arms are provided with push-up

hands

6, 9, 16 and 22, and the front ends of the push-up hands are provided with rollers 5; when the automobile tire is pushed, the front-end roller 5 approaches to but does not reach the diameter line of the tire in the vertical direction.

The state and process of the self-supporting lift-type automobile carrier for carrying automobiles in the embodiment are shown in fig. 5 and 6, and the parking and carrying process is as follows: when the automobile is parked in a parking space, the carrier receives an instruction of an upper computer, the guide wheel 21 is driven by the traveling motor 20 to enable the carrier to enter the bottom of the automobile from the longitudinal center line of the automobile, and the traveling motor 20 stops rotating after the carrier is in place. The stretching and retracting mechanism is driven by a stretching and retracting motor 25, the double-row driving sprocket moves, the double-row driving sprocket and two chains on the driven sprocket move, a front left pushing and lifting arm 4 connected with the upper side chain section of the corresponding stretching and retracting left chain 27 and a front right pushing and lifting arm 23 connected with the lower side chain section of the corresponding stretching and retracting right chain 24 move back and forth along the front sliding table 3; the rear left pushing and lifting arm 10 connected with the upper chain section of the corresponding chain and the rear right pushing and lifting arm 13 connected with the lower chain section of the corresponding chain move back and forth along the rear sliding table 11; the movement directions of the left lifting arms 4 and 10 of the front sliding table 3 and the rear sliding table 11 are consistent, the front lifting arm group and the rear lifting arm group are extended relative to the frame structure of the chassis, and the extension motor 25 stops driving when position sensors on the inner sides of the pushing and lifting

hands

6, 23, 9 and 16 give out extension in-place signals. Meanwhile, the clutch 29 of the pushing and lifting mechanism is opened, the gas spring 19 freely extends from a shortened state, a piston rod 33 of the gas spring 19 and the outer pipe 18 move relatively under the driving of the gas spring 19, the outer pipe 18 pulls the pushing and lifting switching chain 32 to move, the pushing and lifting chain 30 drives the chain wheel to rotate, meanwhile, the pushing and lifting chain 30 pulls the steel wire rope 13 to be drawn out of the rope collector 12, the volute spring in the rope collector 12 stores energy, and the extending part of the steel wire rope 13 automatically keeps tensioned; the front and the rear sliding tables 3 and 11 move relatively, the rod end joint 34 pushes the front sliding table 3 to move along the longitudinal guide rail 2 until the rollers 5 at the front ends of the pushing and lifting

hands

6 and 22 of the front pushing and lifting arm group contact the inner side of the front wheel tire of the automobile, the pipe end joint 17 pushes the rear sliding table 11 to move along the longitudinal guide rail 2 until the rollers 5 at the front ends of the pushing and lifting hands 9 and 16 of the rear pushing and lifting arm group contact the inner side of the rear wheel tire of the automobile, because the thrust of the movement of the front sliding table 3 and the rear sliding table 11 is smaller than the thrust of the pushing and lifting arm group for lifting the tire, the front pushing and lifting arm group or the rear pushing and lifting arm group can contact with the automobile tire at the same time or sequentially, the tire lifting is carried out by the air spring 19 under the premise that all pushing and lifting

hands

6, 22, 9 and 16 of the carrier contact with the automobile tire, and the piston rod 33 of the gas spring 19 and the outer tube 18 are subjected to the same reverse thrust from the tire, so that the synchronous pushing and lifting of the automobile tires are not affected at all finally. The air spring 19 extends continuously, because the front-end rollers 5 of all the pushing and lifting

hands

6, 22, 9 and 16 contact with the automobile tires, and the piston rod 33 and the outer tube 18 are subjected to the same reverse thrust from the tires, the piston rod 33 of the air spring 19 and the outer tube 18 move back and forth, the outer tube 18 continuously pulls the pushing and lifting switching chain 32 to move, the pushing and lifting chain 30 drives the chain wheel to rotate, meanwhile, the pushing and lifting chain 30 continuously pulls the steel wire rope 13 to be drawn out from the rope collector 12, the volute spring in the rope collector 12 continuously stores energy, and the extending part of the steel wire rope 13 is always tensioned; the front sliding table 3 and the rear sliding table 11 continue to move back to back, the front rollers 5 of all the pushing and lifting

hands

6, 22, 9 and 16 roll and cut into the lower side of the tire relatively to the tire, the wheel is separated from the table surface of the vehicle-carrying table, the thrust plate at the rear end of the pushing and lifting hands ensures that the wheel is reliably fixed in the integral moving process of the carrier, the clutch 29 is closed, the pushing and lifting chain 30 of the pushing and lifting mechanism is meshed with the chain wheel, and the pushing and lifting motor 28 only operates in one direction, the chain wheel is static, and the pushing and lifting switching chain 32 acts on the outer tube 18 of the air spring to. The wire rope 13 stops being drawn out of the rope reel 12. Then, the traveling motor 20 of the carrier drives the guide wheel 21 to move to the parking space along the garage track carrying the carried automobile, the traveling motor 20 stops driving when the automobile is in place, meanwhile, the clutch 29 of the pushing and lifting mechanism is kept closed continuously, the pushing and lifting motor 28 is started, the chain wheel rotates, the pushing and lifting chain 30 enables the pushing and lifting switching chain 32 to pull the air spring outer tube 18 to contract, the stored energy of the volute spring in the rope collector 12 is released, the steel wire rope 13 is automatically tightened, the chain section of the pushing and lifting chain 30 connected with the steel wire rope 13 is tensioned, the pushing and lifting chain 30 is kept in a tensioned state as a whole, because the front end rollers 5 of the pushing and lifting

hands

6, 22, 9 and 16 are close to but do not reach the diameter line in the vertical direction of the tire, the front and rear sliding tables 3 and 11 move oppositely under the action of the air spring 19, and the pushing and lifting

hands

6, 22; the pushing and lifting mechanism continues to act, the air spring 19 finishes retracting, the pushing and lifting motor 28 is turned off, the chain wheel and the pushing and lifting chain 30 stop moving, and the rope collector 12 stops collecting ropes. At the same time the carrier's extending and retracting mechanism is reversed and the

lift arms

4, 23 and 10, 15 are retracted. At this point, the carrier may be returned from the bottom of the car to the car dock position at the garage door under the drive of the travel motor 20. When the vehicle is taken, the carrier needs to move to a parking space where the vehicle needs to be taken in advance, the carrying principle is consistent with that of parking, the carrier supports the vehicle to exit the parking space and places the vehicle on a vehicle carrying platform at the door of a garage, and a driver can drive the vehicle away.

When the front and rear sliding tables 3 and 11 just start to act on the air springs 19 and the push-up arm groups on the front and rear sliding tables 3 and 11 just contact with the automobile tires, namely, the stage of the front and rear push-up arm groups spreading, the thrust of the movement of the push-up arm groups in the stage is smaller than the thrust of the push-up arm groups in the subsequent process for lifting up the tires, so that the process from the initial positions of the front and rear sliding tables 3 and 11 to the stages of the push-up arm groups just contacting with the automobile tires is quicker; and the subsequent gas spring 19 acts to make the process from the contact of the lifting arm set to the lifting of the tire is slow and smooth. The two stages of the quick contact of the lifting hand with the tire and the slow jacking of the tire are automatically adjusted by the air spring 19, after the carrier enters the bottom of the automobile and the front and rear lifting arm sets are extended, the clutch 29 is opened, and the air spring 19 can automatically complete the opening and the lifting actions of the front and rear lifting arm sets.

The above embodiments are merely preferred implementations of the self-supporting lift-type vehicle carrier of the present invention, and are not limited to the above structures provided in this disclosure. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention encompasses the full ambit of the claims appended hereto.

Claims

1. Self-supporting promotion formula automobile carrier has the chassis, sets up running gear and preceding, back promotion lift armset on the chassis, its characterized in that: the bottom frame is provided with a pushing and lifting mechanism comprising a gas spring;

in the chassis:

the longitudinal guide rails which are symmetrically arranged and the cross beams which are connected with the front end and the rear end of the longitudinal guide rails form a frame structure;

the front sliding table and the rear sliding table can move along the longitudinal guide rail and are connected with each other through the pushing and lifting mechanism;

the front pushing and lifting arm group is correspondingly connected with the front sliding table, the rear pushing and lifting arm group is correspondingly connected with the rear sliding table, and the pushing and lifting arm groups can respectively move linearly along the corresponding sliding tables;

the push-up mechanism comprises:

the pushing and lifting motor is arranged on the front sliding table of the bottom frame;

the input end of the clutch is connected with the output shaft of the boosting motor, and the output end of the clutch is connected with the transmission shaft of the chain wheel in the chain transmission mechanism;

the end joints of the rod of the gas spring are respectively arranged at the left side and the right side of the chain wheel and are connected to a transmission shaft of the chain wheel through bearings, and the end joints of the gas spring are fixedly connected to a rear sliding table of the bottom frame;

one end of a chain in the chain transmission mechanism bypasses a chain wheel and is connected with a rope collecting device on a cross beam at the rear end of the underframe through a steel wire rope, and the other end of the chain is fixedly connected with an outer tube of the air spring.

2. The self-supporting lift vehicle carrier of claim 1, wherein: the chassis also comprises stretching and collecting mechanisms positioned between the front pushing and lifting arm groups and between the rear pushing and lifting arm groups, and stretching and collecting motors in the stretching and collecting mechanisms are respectively arranged on the front sliding table and the rear sliding table of the chassis; the output shaft of the stretching and retracting motor is connected with double rows of driving chain wheels, and the driven chain wheels are respectively arranged at two ends of the front sliding table and the rear sliding table; two pushing and lifting arms in the same pushing and lifting arm group are respectively connected with corresponding chains to enable the moving directions of the two pushing and lifting arms to be opposite.

3. The self-supporting lift vehicle carrier of claim 2, wherein: and the two push-up arms in the front push-up arm group are respectively connected with the two push-up arms in the rear push-up arm group through telescopic pipes.

4. The self-supporting lift vehicle carrier of any one of claims 1 to 3, wherein: the end part of the push-up arm is provided with a push-up hand, and the front end of the push-up hand is provided with a roller; when the automobile tire is pushed, the front-end roller is close to but does not reach the diameter line of the tire in the vertical direction.