CN108638102B

CN108638102B - Automobile tire grabbing device

Info

Publication number: CN108638102B
Application number: CN201810490337.3A
Authority: CN
Inventors: 毛华庆; 李甫鹏; 干嗣杰; 瞿昌隆; 陈浩强; 叶舟
Original assignee: Wenzhou Xin Ruixiang Technology Co Ltd
Current assignee: Chongqing Jufei Machinery Manufacturing Co ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2020-03-03
Anticipated expiration: 2038-05-21
Also published as: CN108638102A

Abstract

The invention discloses an automobile tire gripping device, which adopts the technical scheme that the automobile tire gripping device comprises a gripping mechanism and a first driving motor used for controlling the gripping mechanism to lift, wherein the gripping mechanism comprises a disk body and a plurality of L-shaped adjusting rods, the first driving motor is connected with one side of the disk body, the adjusting rods can be connected with one side of the disk body, which is far away from the first driving motor in a sliding manner, the adjusting rods are distributed along the circumferential direction of the disk body and can slide along the radial direction of the disk body, one side of each adjusting rod extends to the edge of the disk body along the radial direction of the disk body, when the tire which is horizontally placed on the ground is grabbed, one end of each adjusting rod is positioned in the cavity of the tire by moving the adjusting rods along the radial direction of the disc body, the first driving motor is driven to drive the disc body to ascend, so that the tire is supported by the adjusting rod, and the problem that manual tire transportation is labor-consuming and time-consuming is solved.

Description

Automobile tire grabbing device

Technical Field

The invention relates to a gripping device, in particular to an automobile tire gripping device.

Background

The tire carrying device is a novel special device which is produced in the large environment of wide application of the current automatic equipment, is the most important operation machine in an automatic stereoscopic warehouse, plays a very important role in a tire carrying system in a repair workshop, and the key part of the mechanical arm of the special tire carrying machine is gradually valued by the mechanical industry.

In the traditional tire carrying process, the loading, unloading and conveying of tires from one station to another station are mostly completed by manpower, so that the efficiency is low, the labor intensity is high, and accidents are easy to happen.

With the increasing of the vehicle-mounted weight, the weight of the tire is increased, and the loading, unloading and conveying requirements of the tire in the processing process are difficult to meet depending on manpower. The manual handling is far from meeting the requirement of production development, and the adoption of an automatic operation means is a necessary development trend. At present, development of mechanical arm products for tire grabbing has appeared in succession at home and abroad, but most of the mechanical arm products are complex in structure and poor in stability, do not have a power-off protection function, cannot adapt to complicated and severe working environment, and the existing patent with the application number of CN201420831972.0 has the following defects: when the tires are stored, the tires need to be stacked one by one, and if the claw is used for dragging one side surface of the tire, the claw of the patent is clamped between the two tires and is difficult to pull out; if the claw grabs the tire surface, the tire lines can be scraped.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the tire gripping device which has a simple structure, can realize vertical gripping, has strong adaptability to radial variation of tires, is convenient for stacking the tires and cannot damage the tire lines.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automobile tire grabbing device, is including grabbing the mechanism and being used for controlling the first driving motor who snatchs the mechanism and go up and down, it is L shape including disk body and a plurality of adjusting lever to snatch the mechanism, first driving motor links to each other with one side of disk body, a plurality of the adjusting lever all can slide and connect in the disk body one side that deviates from first driving motor, a plurality of the adjusting lever distributes along disk body circumference and all can follow disk body radial slip, a plurality of one side of adjusting lever all extends to the disk body edge along the radial of disk body, when snatching subaerial tire of keeping flat, through all making the one end of a plurality of adjusting lever all be located the cavity of tire along disk body radial movement with a plurality of adjusting lever, drive the disk body through driving first driving motor and rise and make the tire by the adjusting lever hold up.

As a further improvement of the invention, the tray body comprises a chassis and an end cover, the chassis and the end cover are rotatably connected, a sliding hole for the adjusting rod to pass through and slide is formed in the end cover, an adjusting block is connected to one end of the adjusting rod extending into the tray body, the adjusting block is limited between the end cover and the chassis, threads are arranged on the adjusting block and the chassis, a second driving motor is coaxially connected to the chassis, the second driving motor comprises a machine body and a machine shaft, the machine shaft is rotatably connected to the machine body, the machine body is connected to a first driving motor, one end of the machine body far away from the first driving motor is fixedly connected to the end cover, the machine shaft is fixedly connected to the chassis, a plurality of adjusting blocks are positioned on the same circumference, the machine shaft drives the chassis to rotate relative to the end cover, and the threads of the chassis drive the adjusting block to move along the length direction of the sliding hole, thereby causing the set block to move along the slide hole.

As a further improvement of the invention, a bendable connecting pipe is arranged at one end of the machine body, which is far away from the disc body, and the connecting pipe is connected with the first driving motor.

As a further improvement of the invention, the adjusting rod comprises a hanging rod extending along the radial direction of the disk body and a supporting rod connected with the adjusting block, a clamping groove is arranged on the supporting rod, the notch of the clamping groove is in a regular polygon shape, a positioning column is arranged on the central line of the clamping groove, a clamping piece matched with the clamping groove is arranged on the hanging rod, a column hole matched with the positioning column is arranged on the clamping piece, the column hole penetrates through the clamping piece to the hanging rod, the hanging rod can slide along the axial direction of the positioning column and can also rotate relative to the positioning column, a supporting piece is arranged on the side wall of the hanging rod far away from the supporting rod, the clamping piece can rotate relative to the positioning column until the clamping piece corresponds to the clamping groove again and is clamped with each other by moving the clamping piece along the axial direction of the positioning column, when the upright tire is grabbed, the paired supporting pieces, the disc body is driven to ascend through the first driving motor, so that the supporting piece supports the tire.

As a further improvement of the invention, a limiting plate can be arranged on the supporting rod in a sliding manner, and when the clamping piece is clamped with the clamping groove, the limiting plate slides to one side of the hanging rod far away from the clamping groove relative to the supporting rod and blocks the hanging rod.

As a further improvement of the invention, a spring is arranged in a groove on the adjusting block for the limiting plate to slide, one end of the spring is positioned at the bottom of the groove, and the other end of the spring is connected with the limiting plate.

As a further improvement of the invention, a limiting column extends from the same side face of the suspender and the limiting plate, the limiting column and the column hole are coaxially arranged, the diameter of the limiting column is smaller than the size of the side face of the suspender, one end of the limiting plate extending out of the adjusting block is in an arc shape, and the arc shape is matched with the cylindrical surface of the limiting column.

As a further improvement of the invention, the surface of the supporting piece, which faces to the connecting part of the suspender and the supporting rod, is an arc surface.

The tire lifting device has the advantages that the first driving motor controls the disc body to ascend and descend, so that the disc body drives the adjusting rod to move out or into the cavity of the tire, and the adjusting rod can support and transport the tire by adjusting the position of the adjusting block on the disc body and being driven by the first driving motor; the inner wall of the tire cavity is applied with force compared with the outer surface of the tire, so that the surface lines of the tire can be prevented from being damaged, and the tire is supported directly, so that the tire is safer and more stable than the tire lifted by static friction force; compared with the prior art, the manipulator is designed to grab and transport the tire from the downward side of the tire, so that the phenomenon that the manipulator is pressed by the tire and is difficult to pull away when the tire is placed can be avoided; when the tire is mounted on the manipulator, the prior art manually moves the tire, and one side of the manipulator is clamped below the side surface of the tire, so that the tire lifting and transporting device is more labor-saving, can lift and transport the tire without manually moving the tire, simplifies the transporting operation, and improves the efficiency; the design that the adjusting block slides relative to the disc body enables the adjusting block to be suitable for tires with different diameters.

Drawings

Fig. 1 is a state view of the present invention for transporting a lying tire.

Fig. 2 is a state view of the present invention in a state of transporting a standing tire.

Fig. 3 is a cross-sectional view of the present invention with only one pair of hanger bars.

Fig. 4 is an exploded view of the hanger bar and adjustment block of the present invention.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

Referring to fig. 1 to 4, the automobile tire gripping device of the embodiment includes a gripping mechanism 1 and a first driving motor 2 for controlling the gripping mechanism 1 to ascend and descend, the first driving motor 2 is positioned on a conveyor belt, the first driving motor 2 selects a direct current push rod, and the upward and downward movement of the gripping mechanism 1 is controlled by the contraction of the push rod; the grabbing mechanism 1 comprises a disk body 3 and a plurality of L-shaped adjusting rods 7, a first driving motor 2 is connected with one side of the disk body 3, the adjusting rods 7 can be connected to one side, away from the first driving motor 2, of the disk body 3 in a sliding mode, the adjusting rods 7 are distributed along the circumferential direction of the disk body 3 and can slide along the radial direction of the disk body 3, the adjusting rods 7 are divided into vertical rods and transverse rods, the vertical rods and the transverse rods are connected to form an L shape, the vertical rods are connected with the disk body 3, the transverse rods extend to the edge of the disk body 3 along the radial direction of the disk body 3, a plurality of sliding grooves extending along the radial direction of the disk body 3 can be formed in the disk body 3, sliding blocks clamped with the sliding grooves are arranged on the; in the actual operation process, the side face of the tire is in contact with the ground, namely, the tire is horizontally placed on the ground, the first driving motor 2 moves to the upper part of the tire along with the transmission belt, the first driving motor 2 controls the disc body 3 to move close to the tire, the adjusting rod 7 can be manually pushed, the adjusting rod 7 moves towards the center of the disc body 3 along the radial direction of the disc body 3 to enable the circumferential diameter of one end, away from the vertical rod, of the cross rod to be smaller than the opening diameter of the tire cavity, along with the driving of the first driving motor 2, the cross rods all move into the cavity of the tire, the first driving motor 2 is stopped and the vertical rod is manually pushed, the adjusting rods 7 all radially keep away from the center of the disc body 3 along the disc body 3 until one ends of the cross rods are all located below the side wall of the tire, at the moment, the diameter of the circumference of one end, away from the vertical rod, of, the transverse rods are all abutted with the inner wall of the side face of the tire and support the tire, and along with the transportation of the conveying belt, the tire is conveyed to a storage position, the tire is placed on the ground through the extension of the first driving motor 2 and then is stacked one by one, after the tire is placed, the adjusting rods 7 are moved towards the center of the disc body 3 through pushing the vertical rods, so that the circumferential diameter of the transverse rods is smaller than the opening diameter of a tire cavity, the disc body 3 is moved away from the tire through the driving of the first driving motor 2, the transverse rods are moved out of the cavity of the tire, compared with the design, the conventional design, the transverse rods are grabbed from the outer surface of the tire through a manipulator and transported, the damage to the surface lines of the tire can be avoided, and the tire is safer and more stable when the; compared with the prior art, the manipulator is designed to grab and transport the tire from the downward side of the tire, so that the phenomenon that the manipulator is pressed by the tire and is difficult to pull away when the tire is placed can be avoided; when the tire is mounted on the manipulator, the prior art manually moves the tire, and one side of the manipulator is clamped below the side surface of the tire, so that the tire lifting and transporting device is more labor-saving, can lift and transport the tire without manually moving the tire, simplifies the transporting operation, and improves the efficiency; the design that the adjusting rod 7 slides relative to the disc body 3 enables the invention to be suitable for tires with different diameters.

As an improved specific embodiment, referring to fig. 3, the disc body 3 includes a chassis 31 and an end cover 32, the chassis 31 and the end cover 32 are rotatably connected, a sliding hole 33 for the adjusting rod 7 to pass through and slide is formed on the end cover 32, an adjusting block 5 is connected to one end of the adjusting rod 7 extending into the disc body 3, the adjusting block 5 is limited between the end cover 32 and the chassis 31, threads are formed on the adjusting block 5 and the chassis 31, the adjusting block 5 is matched with the threads of the chassis 31, a second driving motor 6 is coaxially connected to the chassis 31, the second driving motor 6 is a servo motor or a three-phase motor, the second driving motor 6 includes a body 61 and a shaft 62, the shaft 62 is rotatably connected to the body 61, the body 61 is connected to the first driving motor 2, one end of the body 61 far away from the first driving motor 2 is fixedly connected to the end cover 32, the shaft 62 is fixedly connected to the chassis 31, the end face of the machine body 61, far away from the crankshaft 62, is connected with the first driving motor 2, the crankshaft 62 is connected with the side, without threads, of the chassis 31, the cross-sectional dimension width of the adjusting block 5 is larger than the width of the sliding hole 33 in the installation and manufacturing process, namely the adjusting block 5 is limited between the end cover 32 and the chassis 31, the end cover 32 is covered on the chassis 31, one end of the adjusting rod 7 penetrates through the sliding hole 33 and is connected with the adjusting block 5, and the end cover 32 is fixedly connected with one end of the machine body 61; in the using process, the second driving motor 6 works, the crankshaft 62 rotates relative to the machine body 61, the chassis 31 rotates relative to the end cover 32 along with the crankshaft 62, the adjusting block 5 rotates relative to the chassis 31 due to the fact that the adjusting rod 7 is limited by the sliding hole 33, the adjusting block 5 moves along the thread of the chassis 31, the adjusting rod 7 moves along the sliding hole 33, the adjusting blocks 5 are located on one circle, the adjusting blocks 5 can move simultaneously and equivalently, the diameters of the circumferences where the adjusting blocks 5 are located are correspondingly increased and decreased, and accordingly the diameters of the circumferences where the adjusting rod 7 is located are controlled to be increased and decreased; and the synchronism of the adjusting blocks 5 is high, so that the phenomenon that the adjusting rods 7 stretch into the inner wall of the tire due to the fact that people adjust the adjusting blocks 5 respectively is avoided, the stress of each adjusting rod 7 is uneven is avoided, the deformation speed of the adjusting rods 7 is reduced, and the service life of the adjusting rods 7 is prolonged.

As an improved specific embodiment, referring to fig. 1 to 3, since the disc body 3 is not coaxial with the tire when the first driving motor 2 moves to above the tire, that is, after a plurality of adjusting rods 7 are all partially moved into the tire cavity, by the movement of the adjusting rods 7, a part of the adjusting rods 7 will first abut against the inner wall of the tire, and another part of the adjusting rods 7 will not abut against the inner wall of the tire, and as the adjusting rods 7 continue to move until all the adjusting rods 7 abut against the inner wall of the tire to ensure that the stress of each adjusting rod 7 is uniform, which may cause the tire to slide relative to the ground, damage the side surface of the tire, or cause the shaft of the first driving motor 2 to bend, in order to solve the problem, a flexible connecting pipe 63 is provided at one end of the body 61 away from the disc body 3, the connecting pipe 63 is connected with the first driving motor 2, the connecting pipe 63 is a rubber pipe, with low costs, when disk body 3 and tire disalignment, make a plurality of adjusting lever 7 contradict with the tire inner wall through the bending of connecting pipe 63, avoided the tire to remove relative ground and the bad condition of by wearing and tearing, also avoided the axle of first driving motor 2 to be forced to bend and influence the condition of using.

As an improved specific embodiment, referring to fig. 2 and 3, in some environments, an axial direction of a tire is parallel to the ground, that is, the tire stands on the ground through a circumferential surface, and the tire cannot be placed upside down due to a small space, in order to solve the problem that the tire can be transported at this time, the adjusting rod 7 includes a suspension rod 4 extending along a radial direction of the disk body 3 and a support rod 8 connected to the adjusting block 5, the support rod 8 is provided with a slot 51, a notch of the slot 51 is a regular polygon, a positioning column 52 is provided on a center line of the slot 51, the suspension rod 4 is provided with a clamping piece 41 matched with the slot 51, the clamping piece 41 is provided with a column hole 42 matched with the positioning column 52, the column hole 42 penetrates through the suspension rod 4 from the clamping piece 41, the suspension rod 4 can slide along the axial direction of the positioning column 52 and can rotate relative to the positioning column 52, the side wall of the suspension rod 4 far away from the support rod 8 is provided with a support Moving the clamping part 41 and the clamping groove 51 to correspond and be clamped with each other again, in an initial state, clamping the clamping groove 51 and the clamping block 41, extending the suspension rod 4 along the radial direction of the disc body 3, in an actual operation, moving the suspension rod 4 along the positioning column 52 in the axial direction and away from the positioning column 52, moving the clamping block 41 out of the clamping groove 51, if the number of the suspension rods 4 is more than two, leaving a paired group of suspension rods 4, separating the positioning column 52 from the column hole 42 and being dismounted, leaving a paired group of suspension rods 4 to rotate relative to the supporting rod 8, namely, rotating the positioning column 52 relative to the column hole 42, after the suspension rods 4 rotate in place, re-aligning the clamping part 41 and the clamping groove 51, pushing the suspension rods 4 along the positioning column 52 in the axial direction, so that the clamping part 41 is clamped into the clamping groove 51 again, fixing the suspension rods 4 relative to the supporting rod 8, extending the supporting parts 53 on the two suspension rods 4, the two supporting pieces 53 extend into the cavity of the tire, under the driving of the first driving motor 2, the two supporting pieces 53 are both in contact with the inner ring of the tire and support the tire for transportation, the section of the clamping groove 51 is designed to be square, namely, the suspension rod 4 rotates 90 degrees relative to the support rod 8 and rotates from horizontal to vertical; the section of the clamping groove 51 can be designed into a regular octagon and the like according to the requirement of the user, so that more rotation angles can be selected by the user; the design can transport the tire standing on the ground and also can transport the tire, and the hanging rod 4 and the supporting rod 8 can be assembled, disassembled and adjusted according to the transport of the standing tire or the lying tire, so that the operation is convenient and the application range of the invention is improved.

As an improved specific embodiment, referring to fig. 1 to 4, a limiting plate 54 is slidably disposed on the supporting rod 8, a groove is formed in the supporting rod 8, the limiting plate 54 is installed in the groove, the limiting plate 54 can extend out or retract into the groove, and the limiting plate 54 is disposed at an end away from the slot 51, when the clamping member 41 is clamped with the slot 51, the limiting plate 54 extends out of the groove and is located at a side of the suspension rod 4 away from the slot 51, and the suspension rod 4 cannot axially move relative to the positioning column 52; when needs dismouting or adjustment jib 4, need during limiting plate 54 pushin the groove, just can keep away from draw-in groove 51 removal with jib 4 along reference column 52 axial, so the design has improved jib 4 and branch 8's stability of being connected, avoids long-time work or vibrations to make jib 4 break away from gradually with branch 8 and lead to the condition that the tire dropped along with jib 4, has improved the security.

As an improved specific embodiment, referring to fig. 3, due to different installation positions of the position-limiting plate 54, the position-limiting plate 54 extends in different directions, can move vertically downward, can move vertically upward, can move horizontally, and the like, if the position-limiting plate 54 has no other fixing device, the position-limiting plate 54 can only be installed in a vertically downward moving manner, and the rest of the modes can deviate due to self-vibration or gravity, which can cause a problem of unstable structure; namely, a spring 55 is arranged in a groove for the limiting plate 54 to slide on the adjusting block 5, one end of the spring 55 is positioned at the bottom of the groove, the other end of the spring 55 is connected with the limiting plate 54, and the design of the spring 55 enables the extending direction of the limiting plate 54 to be various and good structural stability to be kept.

As an improved specific embodiment, referring to fig. 1 to 4, a limiting post 56 extends from a surface of the boom 4 on the same side as the limiting plate 54, the limiting post 56 is disposed coaxially with the post hole 42, a diameter of the limiting post 56 is smaller than a lateral dimension of the boom 4, an end of the limiting plate 54 extending out of the adjusting block 5 is arc-shaped, the arc-shape is matched with a cylindrical surface of the limiting post 56, when adjusting an angle of the boom 4, the limiting plate 54 is pushed to move out of a circumferential surface of the limiting post 56, the boom 4 is moved so that the circumferential surface of the limiting post 56 is opposite to an arc-shaped end of the limiting plate 54, the limiting plate 54 is loosened, the arc-shaped end of the limiting plate 54 is attached to the cylindrical surface of the limiting post 56, when the boom 4 is rotated, the arc-shaped end of the limiting plate 54 slides relative to the cylindrical surface of the limiting post 56, the limiting plate 54 can be in contact with the lateral surface of the boom, the stability of the boom 4 in adjustment is improved.

As a modified specific embodiment, referring to fig. 3 to 4, the surface of the support member 53 facing the connection position of the suspension rod 4 and the support rod 8 is an arc surface, and the tire inner ring is circular, so that compared with the design that the support surface of the support member 53 is a plane, the contact area between the support member 53 and the tire is large, the circular shape of the tire inner ring is not damaged, and the tire inner ring is prevented from deforming so that there is a place where the connection is not in place when the tire is connected with the hub.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides an automobile tire grabbing device which characterized in that: comprises a grabbing mechanism (1) and a first driving motor (2) used for controlling the grabbing mechanism (1) to ascend and descend, wherein the grabbing mechanism (1) comprises a disk body (3) and a plurality of adjusting rods (7) in an L shape, the first driving motor (2) is connected with one side of the disk body (3), the adjusting rods (7) can be connected to one side of the disk body (3) deviating from the first driving motor (2) in a sliding manner, the adjusting rods (7) are circumferentially distributed along the disk body (3) and can radially slide along the disk body (3), one side of each adjusting rod (7) extends to the edge of the disk body (3) along the radial direction of the disk body (3), when a flat tire is grabbed, one end of each adjusting rod (7) is located in a cavity of the tire by radially moving the plurality of adjusting rods (7) along the disk body (3) on the ground, the first driving motor (2) is driven to drive the disc body (3) to ascend, so that the tire is supported by the adjusting rod (7);

the disc body (3) comprises a chassis (31) and an end cover (32), the chassis (31) and the end cover (32) are rotatably connected, a sliding hole (33) for the adjusting rod (7) to penetrate and slide is formed in the end cover (32), one end of the adjusting rod (7) extending into the disc body (3) is connected with an adjusting block (5), the adjusting block (5) is limited between the end cover (32) and the chassis (31), threads are arranged on the adjusting block (5) and the chassis (31), a second driving motor (6) is coaxially connected onto the chassis (31), the second driving motor (6) comprises a body (61) and a shaft (62), the shaft (62) is rotatably connected with the body (61), the body (61) is connected with a first driving motor (2), one end of the body (61) far away from the first driving motor (2) is fixedly connected with the end cover (32), the crankshaft (62) is fixedly connected with the chassis (31), the adjusting blocks (5) are located on the same circumference, the chassis (31) is driven to rotate relative to the end cover (32) through the crankshaft (62), and the adjusting blocks (5) are driven to move along the length direction of the sliding hole (33) by threads of the chassis (31), so that the adjusting blocks (5) move along the sliding hole (33);

adjusting lever (7) are including jib (4) along disk body (3) radial extension and branch (8) of being connected with adjusting block (5), be provided with draw-in groove (51) on branch (8), the notch of draw-in groove (51) is regular polygon, be provided with reference column (52) on the central line of draw-in groove (51), be provided with on jib (4) with draw-in groove (51) assorted fastener (41), be provided with post hole (42) with reference column (52) looks adaptation on fastener (41), post hole (42) are run through to jib (4) from fastener (41), reference column (52) endwise slip also can be followed to jib (4) rotation relatively, be provided with support piece (53) on the lateral wall of branch (8) is kept away from in jib (4), make fastener (41) can rotate to fastener (41) and draw-in groove (5) through deviating from fastener (41) endwise slip along reference column (52) axial displacement (51) And when the vertical tire is grabbed, the paired supporting pieces (53) extend into the cavity of the tire from the two end faces of the tire through the movement of the adjusting block (5), and the disc body (3) is driven by the first driving motor (2) to ascend so that the supporting pieces (53) support the tire.

2. The vehicle tire gripping device according to claim 1, wherein: one end of the body (61) far away from the disc body (3) is provided with a bendable connecting pipe (63), and the connecting pipe (63) is connected with the first driving motor (2).

3. The vehicle tire gripping device according to claim 1, wherein: a limiting plate (54) can be arranged on the support rod (8) in a sliding mode, when the clamping piece (41) is clamped with the clamping groove (51), the limiting plate (54) slides to one side, far away from the clamping groove (51), of the hanging rod (4) relative to the support rod (54) and blocks the hanging rod (4).

4. The vehicle tire gripping device according to claim 3, wherein: a spring (55) is arranged in a groove in the adjusting block (5) for the limiting plate (54) to slide, one end of the spring (55) is positioned at the bottom of the groove, and the other end of the spring is connected with the limiting plate (54).

5. The vehicle tire gripping device according to claim 4, wherein: a limiting column (56) extends from the surface of the hanger rod (4) on the same side as the limiting plate (54), the limiting column (56) and the column hole (42) are coaxially arranged, the diameter of the limiting column (56) is smaller than the size of the side surface of the hanger rod (4), one end, extending out of the adjusting block (5), of the limiting plate (54) is arc-shaped, and the arc shape is matched with the cylindrical surface of the limiting column (56).

6. The vehicle tire gripping device according to claim 1, wherein: the surface of the supporting piece (53) facing the connecting part of the suspender (4) and the supporting rod (8) is an arc surface.