Electric car mover

Abstract

The invention relates to an electric car mover which comprises a first supporting arm and a second supporting arm, and a supporting rod assembly is arranged between the first supporting arm and the second supporting arm. The first supporting arm comprises a fixed arm fixedly connected to the end of the supporting rod assembly, a first movable arm arranged on the fixed arm in a sliding mode in the axis direction of the fixed arm, and a second movable arm arranged at the end, away from the fixed arm, of the first movable arm in a limited sliding mode and moving in the same direction as the first movable arm, wherein the axis of the fixed arm is perpendicular to the axis of the supporting rod assembly. An electric push rod for driving the first movable arm to move back and forth is further arranged on the fixed arm; one end, far away from the first movable arm, of the second movable arm is provided with a first cross rod which is parallel to the axis of the supporting rod assembly and can adjust the distance between the first cross rod and the second supporting arm; and rollers are arranged on the bottom surfaces of the fixed arm, the second supporting arm and the first movable arm. The device is convenient to use and cannot be influenced by a wheel retainer.

Description

Technical Field

[0001] The present invention relates to the field of automotive equipment, and in particular to an electric vehicle mover. Background Art

[0002] With the continuous increase in the number of automobiles, the parking problem has become increasingly prominent, such as behaviors like random parking, illegal parking, and occupying others' parking spaces. In various parking lots nowadays, in order to standardize the parking positions of vehicles, parking stoppers are set on parking spaces, which are usually also called wheel stoppers, car stoppers, or parking pads. In such parking lots, when it is impossible to contact the driver to drive away the car or when the vehicle breaks down and it is necessary to move the vehicle, a vehicle mover is used. However, existing vehicle movers are usually only applicable to tires of a certain size and cannot be adjusted, so their application range is limited; moreover, existing vehicle movers are inserted under the wheels along the axial direction of the wheels to lift and move the wheels. When inserted under the wheels along the axial direction, in the case where there is a wheel stopper under the wheels, the wheel stopper will affect the use of the vehicle mover and the vehicle cannot be moved. Summary of the Invention

[0003] In view of the existing deficiencies, the present invention provides an electric vehicle mover.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an electric vehicle mover, including a first support arm and a second support arm. A support rod assembly with two ends correspondingly connected to the first support arm and the second support arm is arranged between the first support arm and the second support arm. The first support arm includes a fixed arm fixedly connected to the end of the support rod assembly and perpendicular to the axis of the support rod assembly, a first movable arm slidably arranged on the fixed arm along the axis of the fixed arm, and a second movable arm slidably limited at the end of the first movable arm away from the fixed arm and moving in the same direction as the first movable arm; an electric push rod for driving the first movable arm to move back and forth is further arranged on the fixed arm; a first cross bar parallel to the axis of the support rod assembly and capable of adjusting the distance from the second support arm is arranged at the end of the second movable arm away from the first movable arm; rollers are arranged on the bottom surfaces of the fixed arm, the second support arm, and the first movable arm.

[0005] Preferably, the height of the first support arm is higher than the height of the support rod assembly, and the height of the second support arm is flush with the height of the support rod assembly.

[0006] Preferably, the support rod assembly includes a mounting base, a rotating base, a second cross bar, a connecting column, and a plurality of bearings. There are two rotating bases which are pivotally connected to opposite sides of the mounting base correspondingly. Above one side of the rotating base at the position pivotally connected to the mounting base, it is correspondingly connected to the second cross bar, and above the other side, it is connected to the connecting column. The connecting column is arranged on one side adjacent to the first cross bar, and a plurality of bearings are sleeved on the connecting column. The fixed arm and the second support arm are correspondingly arranged on both sides of the mounting base.

[0007] Preferably, the rotating base is in a triangular structure. The mounting base, the second cross bar, and the connecting column are correspondingly arranged at three vertex angles of the rotating base. A limiting block for limiting the rotation angle of the rotating base is also arranged on the mounting base.

[0008] Preferably, the mounting base includes a support rod and two mounting brackets correspondingly arranged at both ends of the support rod. The rotating base is pivotally connected to the support rod. The fixed arm and the second support arm are correspondingly arranged on the two mounting brackets.

[0009] Preferably, a first sliding groove is arranged on the fixed arm. The first movable arm slides in the first sliding groove. A push rod connecting piece connected to the push rod of the electric push rod is connected to the first movable arm.

[0010] Preferably, a second sliding groove is arranged on the first movable arm. The second movable arm slides in the second sliding groove. A first positioning piece for limiting the sliding of the second movable arm is arranged on the first movable arm.

[0011] Preferably, the second movable arm is a rack with teeth. A through hole of the sliding groove is arranged on the groove wall of the second sliding groove corresponding to the teeth of the second movable arm. The first positioning piece passes through the through hole of the sliding groove and is movably connected to the second movable arm.

[0012] Preferably, the first positioning piece is a positioning block provided with teeth that can mesh with the second movable arm. The positioning block is movably arranged in the through hole of the sliding groove.

[0013] Preferably, an L-shaped cross bar connecting piece is arranged at the front end of the second movable arm. The second movable arm and the first cross bar are correspondingly arranged at both ends of the cross bar connecting piece. The first cross bar is a cylindrical cross bar. A first through hole is arranged on the cross bar connecting piece. The first cross bar is movably inserted through the first through hole in a matching manner.

[0014] The beneficial effects of the present invention are as follows: The first support arm of the invention is configured as a double-telescopic structure, which can meet the usage requirements of different tire sizes in a larger range. At the same time, the first cross bar is movably arranged on the second movable arm. First, the electric push rod is used to push out the first cross bar, and then it moves along the radial direction of the wheel from the opposite side of the wheel stopper to the position of the wheel so that the support rod assembly abuts against the wheel. Then, the distance between the first cross bar and the second support arm is adjusted so that the first cross bar is on the other side of the wheel. Finally, the electric push rod is contracted to abut the first cross bar against the wheel, thereby lifting the wheel, avoiding the influence of the wheel stopper and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present invention from the right side;

[0016] Figure 2 is a schematic structural diagram of an embodiment of the present invention from the left side;

[0017] Figure 3 is a cross-sectional structural diagram of the first support arm of an embodiment of the present invention;

[0018] Names and serial numbers of components in the figure: 1 - support rod assembly, 10 - support rod, 100 - mounting bracket, 11 - rotating seat, 12 - second cross bar, 13 - bearing, 14 - limit block, 2 - fixed arm, 20 - first movable arm, 21 - second movable arm, 22 - first chute, 200 - push rod connecting piece, 201 - second chute, 202 - first positioning piece, 203 - chute through hole, 210 - cross bar connecting piece, 211 - first through hole, 212 - positioning hole, 23 - second support arm, 4 - electric push rod, 40 - drive motor, 41 - push rod, 5 - first cross bar, 50 - cross bar groove, 51 - second positioning piece, 6 - universal wheel, 60 - directional wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to more clearly illustrate the purpose, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described below in conjunction with the drawings and embodiments. The description is clear and complete. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0020] An embodiment of the present invention is as Figures 1 to 3As shown in the figure, an electric vehicle mover includes a first support arm and a second support arm 3. Between the first support arm and the second support arm 3, there is a support rod assembly 1 with both ends correspondingly connected to the first support arm and the second support arm 3. The first support arm and the second support arm 3 are correspondingly arranged at both axial ends of the support rod assembly 1 and face the same direction. For example, the first support arm is arranged at the left end of the support rod assembly 1, and the second support arm 3 is arranged at the right end of the support rod assembly 1. At the same time, both the first support arm and the second support arm 3 are perpendicular to the axis of the support rod assembly 1 and extend forward towards the front of the support rod assembly 1. The axis direction of the support rod assembly 1 is the left-right direction. At this time, an installation bracket 100 is installed at both the left end and the right end of the support rod assembly 1, and then the first support arm and the second support arm 3 are installed on the corresponding installation brackets 100; The first support arm includes a fixed arm 2 fixedly connected to the end of the support rod assembly 1 and having an axis perpendicular to the axis of the support rod assembly 1, a first movable arm 20 slidably arranged along the axis of the fixed arm 2 on the fixed arm 2, and a second movable arm 21 slidably arranged at the end of the first movable arm 20 away from the fixed arm 2 and moving in the same direction as the first movable arm 20. That is, the first support arm is composed of the fixed arm 2, the first movable arm 20, and the second movable arm 21. The first movable arm 20 drives the second movable arm 21 to slide back and forth on the fixed arm 2, and the second movable arm 21 can also slide back and forth on the first movable arm 20, forming a multiple sliding structure; The front part of the first movable arm 20 protrudes from the front end of the fixed arm 2 and is connected to the installation bracket 100 at the front part of the fixed arm 2. The electric push rod 4 is arranged at the tail of the fixed arm 2, so that the structure can still be stable after the first movable arm 20 and the second movable arm 21 slide forward, and thus the sliding of the first movable arm 20 and the second movable arm 21 can be determined according to the size of the tire of the vehicle to be moved; There is also an electric push rod 4 on the fixed arm 2 that drives the first movable arm 20 to move back and forth. The drive motor 40 of the electric push rod 4 is arranged at the tail of the fixed arm 2. The push rod 41 of the electric push rod 4 is arranged parallel to the first movable arm 20 and is connected to the part of the first movable arm 20 that protrudes from the front end of the fixed arm 2, that is, connected to the front part of the first movable arm 20. Their connection is realized through a push rod connecting piece 200 arranged between the front end of the push rod 41 of the electric push rod 4 and the front part of the first movable arm 20; One end of the second movable arm 21 away from the first movable arm 20 is provided with a first cross bar 5 parallel to the axis of the support rod assembly 1 and capable of adjusting the distance from the second support arm 3. The first cross bar 5 is selected as a cylindrical cross bar. The axis of the first cross bar 5 is parallel to the axis of the support rod assembly 1. The first cross bar 5 and the support rod assembly 1 form a clamping mechanism for clamping the vehicle tire;Before clamping the wheel, the distance between the first cross bar 5 and the second support arm 3 is made larger. After the wheel enters between the first support arm and the second support arm 3 and presses against the support rod assembly 1, the distance between the first cross bar 5 and the second support arm 3 is reduced, and under the contraction of the electric push rod 4, the first cross bar 5 presses against the wheel and the support rod assembly 1 clamps and lifts the wheel.

[0021] For the pivoting structure between the first cross bar 5 and the second movable arm 21, an L-shaped cross bar connecting member 210 is provided at the front end of the second movable arm 21. The second movable arm 21 and the first cross bar 5 are correspondingly arranged at both ends of the cross bar connecting member 210. The cross bar connecting member 210 is horizontally arranged so that one end in the front-rear direction is fixedly connected to the middle position of the front end of the second movable arm 21, and one end in the left-right direction faces the second support arm 3, that is, to the right and in a direction parallel to the axis line of the support rod assembly 1. A first through hole 211 for the first cross bar 5 to movably pass through is provided at one end of the cross bar connecting member 210 in the left-right direction. That is to say, the first through hole 211 is in the left-right direction, and the first cross bar 5 movably passes through the first through hole 211. When the first cross bar 5 moves towards the second support arm 3 in the first through hole 211, the distance between the first cross bar 5 and the second support arm 3 is reduced. When the first cross bar 5 moves away from the second support arm 3, the distance between the first cross bar 5 and the second support arm 3 is enlarged; at this time, a cross bar groove 50 along the axis of the first cross bar 5 is provided on the first cross bar 5, and a positioning hole 212 corresponding to the cross bar groove 50 is provided on the hole wall of the first through hole 211. A second positioning member 51 that can be engaged and positioned with the cross bar groove 50 is movably installed in the positioning hole 212. If the second positioning member 51 is selected as a positioning bolt and the positioning hole 212 is a positioning threaded hole and two are provided, the cooperation between the positioning bolt and the cross bar groove 50 is adjusted by the threaded connection of the positioning bolt in the positioning hole 212, thereby positioning the first cross bar 5 and preventing the first cross bar 5 from rotating and falling off from the first through hole 212 when the first cross bar 5 moves in the first through hole 212.

[0022] Rollers are provided on the bottom surfaces of the fixed arm 2, the second support arm 3 and the first movable arm 20. For example, a universal wheel 6 is provided at each of the front and rear ends of the bottom surface of the second support arm 3, an alignment wheel 60 with an axial direction the same as the axis line direction of the support rod assembly 1 or a universal wheel is provided at the front part of the bottom surface of the fixed arm 2, and a universal wheel 6 is provided at the front part of the bottom surface of the first movable arm 20. The setting of the alignment wheel can control the moving direction during the vehicle moving process; at this time, the mounting bracket 100 at the left end can be set into an H-shaped structure, the fixed arm 2 is installed in the opening at the upper part of the H-shaped structure, the alignment wheel 60 is installed in the opening at the lower part of the H-shaped structure, and the electric push rod 4 is installed at the top of the fixed arm 2; the mounting bracket 100 at the right end is set into a vertical plate, and the second support arm 3 is installed at the top of the vertical plate.

[0023] Further improvements, such as Figures 1 to 3 As shown in Figures 1 to 3 , the height of the first support arm is higher than that of the support rod assembly 1, and the height of the second support arm 3 is flush with that of the support rod assembly 1. For example, the height of the mounting bracket 100 at the left end is set to be greater than the height of the mounting bracket 100 on the right side, and the height of the mounting bracket 100 on the right side is equivalent to the height of the support rod assembly 1. Then, the first support arm and the second support arm 3 are correspondingly installed on the tops of the left mounting bracket 100 and the right mounting bracket 100. Correspondingly, the roller provided on the fixed arm 2 is installed at the lower part of the left mounting bracket 100, and the roller provided on the first movable arm 20 can be connected to the first movable arm 20 and the roller by using a connecting member having a certain height and an I-shaped structure to keep the rollers on the first support arm and the second support arm 3 at the same height, ensuring normal rolling operation on the ground during the vehicle moving process. In this way, the height of the first cross bar 5 is higher than that of the support rod assembly 1. After clamping the vehicle tire, the two clamping points on the tire are in an inclined state, and the downward pressure of the wheel is mainly supported by the support rod assembly 1, which reduces the force exerted by the wheel on the first cross bar 5 and lowers the requirements for the size and strength of the first cross bar 5. A rod with a smaller diameter can be used as the first cross bar 5, so that it can smoothly cross the wheel stopper and pass through the gap between the wheel and the fender. While maintaining the stability of the clamping structure, only a small height of the tire needs to be lifted to move the vehicle, which solves the problems that occur when the two clamping members for clamping the tire in the existing vehicle mover are at the same height during vehicle moving; this is because the tire has a circular structure. When the tire is clamped between two clamping members at the same height, the connection line between the two clamping members divides the lower part of the tire into an inverted arch structure, and the distance between the two clamping members determines the height of this arch structure, which also determines the height that the tire needs to be lifted during vehicle moving. If the height of the arch structure is too small, it means that the distance between the two clamping members is small, and at this time, the clamping of the tire is unstable. If the height of the arch structure is large, it means that the distance between the two clamping members is large, and then the height that the tire needs to be lifted is also large, which is not conducive to use, and it will also be affected by the wheel stopper during the use process.

[0024] Further improvements, such as Figure 1 and Figure 2As shown in the figure, the support rod assembly 1 includes a mounting base, a rotating seat 11, a second cross bar 12, a connecting column, and a plurality of bearings 13. There are two rotating seats 11, which are pivotally connected to opposite sides of the mounting base correspondingly. Above one side of the rotating seat 11 at the position pivotally connected to the mounting base, it is correspondingly connected to the second cross bar 12, and above the other side, it is connected to the connecting column. The connecting column is arranged on one side adjacent to the first cross bar 5, and a plurality of bearings 13 are sleeved on the connecting column. That is, one of the two rotating seats 11 is arranged on the left side of the mounting base, and the other rotating seat 11 is arranged on the right side of the mounting base. Both rotating seats 11 can rotate relative to the mounting base in the vertical direction. The position where the rotating seat 11 is pivotally connected to the mounting base is at the lower part of the rotating seat 11. The two ends of the second cross bar 12 are correspondingly fixedly connected to the positions at the rear sides of the upper parts of the two rotating seats 11, and the two ends of the connecting column are correspondingly connected to the positions at the front sides of the upper parts of the two rotating seats 11, and they can be fixedly connected by screws. For example, if the second cross bar 12 is selected as a smooth shaft, it can increase the friction between it and the wheel, avoid the wheel from slipping out of the second cross bar 12, and thus improve the stability of the vehicle load. At the same time, a plurality of bearings 13 are sleeved on the connecting column. When using the support rod assembly 1 to clamp the tire, on one side of the connecting column, that is, the side where the bearings 13 are located, is close to the ground, and the tire abuts against the bearings 13. The setting of a plurality of bearings 13 on the connecting column makes the tire form a plurality of stress points when pressing against the plurality of bearings 13. Due to the different stress magnitudes, the synchronous and co-frequency rotation of the plurality of bearings 13 is avoided, and a more stable limit for the tire is formed, thus avoiding the slipping of the tire, and solving the problem that the tire is prone to slipping during the vehicle moving process when a single roller is used. After that, the second cross bar 12 is pressed down by the wheel and moves downward along with the rotating seat 11, while the side where the bearings 13 are located moves upward, which increases the ground clearance of the side where the bearings 13 are located and improves the ground-passing ability in the vehicle-loading state. The fixed arm 2 and the second support arm 3 are correspondingly arranged on both sides of the mounting base. The fixed arm 2 is arranged on the left side of the mounting base, and the second support arm 3 is arranged on the right side of the mounting base. To facilitate the rotation of the rotating seat 11, the rotating seat 11 is set in a triangular structure. The mounting base, the second cross bar 12, and the connecting column are correspondingly arranged at the three apex angles of the rotating seat 11. The three apex angles of the rotating seat 11 are rounded. The rotating seat 11 is rotatably arranged on the mounting base in an inverted triangular manner. The mounting base is located at the apex angle of the inverted triangle, and the connecting column and the second cross bar 12 are located at the front and rear ends of the bottom side. The mounting base is also provided with a limit block 14 for limiting the rotation angle of the rotating seat 11. The limit block 14 is set as a right-angled triangular stop block and is arranged above the rotating seat 11. The plane where its hypotenuse is located is opposite to the plane where the bottom side of the rotating seat 11 is located. During the rotation of the rotating seat 11, the plane where the bottom side of the rotating seat 11 is located will touch the plane where the hypotenuse of the limit block 14 is located, thereby limiting the rotation of the rotating seat 11.For the mounting base, the mounting base includes a support rod 10 and two mounting brackets 100 correspondingly arranged at both ends of the support rod 10. A rotating seat 11 is pivotally connected to the support rod 10. A fixed arm 2 and a second support arm 3 are correspondingly arranged on the two mounting brackets 100. At both ends of the support rod 10, two rotating seats 11 are first arranged, and then the mounting brackets 100 are arranged. The two rotating seats 11 are located between the two mounting brackets 100 and will not affect the rotation of the rotating seat 11. At this time, a limiting block 14 is arranged on the surface of the mounting bracket 100 facing the center of the support rod 10. At the same time, the left end of the support rod 10 can also pass through the left mounting bracket 100, and the support rod 10 is used as the rotating shaft of the directional wheel 60. In order to enhance the structural strength of the mounting base, a connecting rod with both ends correspondingly connected to the left and right mounting brackets can also be arranged at the lower part of the two mounting brackets 100, and the connecting rod is used to enhance the structural strength of the mounting base.

[0025] Further improvement, as Figures 1 to 3 shown in, a first sliding groove 22 is arranged on the fixed arm 2. A first movable arm 20 is slidably arranged in the first sliding groove 22. A push rod connecting piece 200 connected to the push rod 41 of the electric push rod 4 is connected to the first movable arm 20. If the first sliding groove 22 is arranged inside the fixed arm 2 and extends in the front-rear direction, the opening of the first sliding groove 22 faces forward. The first movable arm 20 is slidably arranged in the first sliding groove 22 in a matching manner, and the front part of the first movable arm 20 is outside the first sliding groove 22. The driving motor 40 of the electric push rod 4 is arranged at the tail of the top surface of the fixed arm 2. Its push rod 41 is arranged in a manner parallel to the axis direction of the first sliding groove 22. At the same time, the front end of the push rod 41 extends out of the front end of the fixed arm 2. Then, a push rod connecting piece 200 is arranged between the top of the first movable arm 20 and the push rod 41. The push rod connecting piece 200 is arranged in an inverted L-shaped structure. The vertical end is connected to the top of the first movable arm 20, and the horizontal end is connected to the push rod 41. After starting the electric push rod 4, the push rod 41 of the electric push rod 4 pushes the first movable arm 20 to move back and forth in the first sliding groove 22.

[0026] Further improvement, as Figure 3As shown in the figure, for the sliding structure of the second movable arm 21 on the first movable arm 20, a second chute 201 is provided on the first movable arm 20, and the second movable arm 21 is slidably arranged in the second chute 201. A first positioning member 202 for limiting the sliding of the second movable arm 21 is provided on the first movable arm 20. For example, the second chute 201 is arranged inside the first movable arm 20 and extends in the front-rear direction, and the opening of the second chute 201 also faces forward. The second movable arm 21 is slidably arranged in the second chute 201 in a matching manner. Then, a chute through-hole 203 is provided on the groove wall of the second chute 201, and the first positioning member 202 is arranged in the chute through-hole 203 or at the edge adjacent to the chute through-hole 203. If a quick clamp is selected as the first positioning member 202, at this time, the first positioning member 202 is arranged at a position on the first movable arm 20 adjacent to the chute through-hole 203. A plurality of card slots that can be engaged with the quick clamp in a matching manner are arranged at intervals along the axial direction of the second movable arm 21 on the side wall of the second movable arm 21 corresponding to the chute through-hole 203. When the second movable arm 21 does not need to slide, the second movable arm 21 is positioned by using the quick clamp to engage in the card slot. When the second movable arm 21 needs to slide, the quick clamp and the card slot are disengaged, and then the second movable arm 21 is pulled out from the second chute 201. When it is pulled to the required length, the second movable arm 21 is positioned by using the engagement of the quick clamp and the card slot. Preferably, the second chute 201 is arranged inside the first movable arm 20 and extends in the front-rear direction, and the opening of the second chute 201 also faces forward. The second movable arm 21 is a rack with teeth that is slidably arranged in the second chute 201 in a matching manner. A chute through-hole 203 is provided on the groove wall of the second chute 201 corresponding to the teeth of the second movable arm 21. The first positioning member 202 passes through the chute through-hole 203 and is movably connected to the second movable arm 21. The teeth on the second movable arm 21 are arranged on the top surface of the second movable arm 21. The chute through-hole 203 is provided on the top groove wall of the second chute 201, and the chute through-hole 203 is also arranged on the front side of the top surface of the first movable arm 20. The movement of the second movable arm 21 is positioned by using the engagement of the first positioning member 202 between two adjacent teeth. For example, the chute through-hole 203 is arranged as a threaded through-hole, and the first positioning member 202 is arranged as a bolt that is threadedly connected in the threaded through-hole. The bolt is screwed out or screwed into the threaded through-hole to cooperate with the teeth for positioning.In order to maintain the stability of the positioning structure, the first positioning member 202 is a positioning block provided with teeth that can engage with the second movable arm 21. The positioning block is movably arranged in the chute through-hole 203, and teeth are provided on the bottom surface of the positioning block. When the positioning block is moved downward in the chute through-hole 203, the positioning block engages with the second movable arm 21 to position the second movable arm 21. When the positioning block is moved upward in the chute through-hole 203, the positioning block and the second movable arm 21 are disengaged, and the second movable arm 21 can slide in the second chute 201. At this time, an n-shaped bracket is erected above the chute through-hole 203 on the top surface of the first movable arm 20. A threaded through-hole is provided at the top of the n-shaped bracket, and then a screw connected by threading in the threaded through-hole is fixedly connected to the top surface of the positioning block. By rotating the screw in the threaded through-hole, the up and down movement of the positioning block in the chute through-hole 203 is realized, and thus the positioning of the second movable arm 21 is realized.

[0027] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. An electric car mover, characterized in that: The invention comprises a first supporting arm and a second supporting arm, wherein a supporting rod assembly having two ends correspondingly connected to the first supporting arm and the second supporting arm is arranged between the first supporting arm and the second supporting arm, the first supporting arm comprises a fixed arm fixedly connected to the end of the supporting rod assembly and having an axis perpendicular to the axis of the supporting rod assembly, a first movable arm slidably arranged on the fixed arm along the axis direction of the fixed arm, and a second movable arm limitedly slidably arranged on the end of the first movable arm away from the fixed arm and moving in the same direction as the first movable arm; an electric push rod for driving the first movable arm to move forward and backward is also arranged on the fixed arm; a first cross bar parallel to the axis of the supporting rod assembly and capable of adjusting the distance between the second movable arm and the second supporting arm is arranged at the end of the second movable arm away from the first movable arm; The bottom surfaces of the fixed arm, the second supporting arm and the first movable arm are all provided with rollers.

2. The electric vehicle mover according to claim 1, characterized in that: The height of the first support arm is higher than the height of the support rod assembly, and the height of the second support arm is flush with the height of the support rod assembly.

3. The electric vehicle mover according to claim 1, characterized in that: The support rod assembly includes a mounting seat, a rotating seat, a second cross bar, a connecting column and multiple bearings. The rotating seat is provided with two and is pivotally connected to opposite sides of the mounting seat. The rotating seat is connected to the second cross bar on one side above the pivot position of the mounting seat and is connected to the connecting column on the other side. The connecting column is provided on a side adjacent to the first cross bar and multiple bearings are sleeved on the connecting column; the fixed arm and the second support arm are correspondingly provided on both sides of the mounting seat.

4. The electric vehicle mover according to claim 3, characterized in that: The rotating seat is in a triangular structure, and the mounting seat, the second cross bar and the connecting column are correspondingly arranged at the three vertices of the rotating seat. A limit block for limiting the rotation angle of the rotating seat is also arranged on the mounting seat.

5. The electric vehicle mover according to claim 3, characterized in that: The mounting seat comprises a support rod and two mounting frames correspondingly arranged at two ends of the support rod, the rotating seat is pivotally connected to the support rod, and the fixed arm and the second support arm are correspondingly arranged on the two mounting frames.

6. The electric vehicle mover according to claim 1, characterized in that: The fixed arm is provided with a first sliding groove, the first movable arm is slidably arranged in the first sliding groove, and the first movable arm is connected with a push rod connecting piece connected to a push rod of the electric push rod.

7. The electric vehicle mover according to claim 1, characterized in that: The first movable arm is provided with a second sliding groove, the second movable arm is slidably arranged in the second sliding groove, and the first movable arm is provided with a first positioning member which limits the sliding of the second movable arm.

8. The electric vehicle mover according to claim 7, characterized in that: The second movable arm is a rack with teeth, a slot through hole is provided on the slot wall of the second sliding slot corresponding to the teeth of the second movable arm, and the first positioning member passes through the slot through hole and is movably connected to the second movable arm.

9. The electric vehicle mover according to claim 8, characterized in that: The first positioning member is a positioning block provided with teeth that can mesh with the second movable arm, and the positioning block is movably arranged in the sliding slot through hole.

10. The electric vehicle mover according to claim 1, characterized in that: An L-shaped cross bar connector is provided at the front end of the second movable arm, and the second movable arm and the first cross bar are correspondingly arranged at both ends of the cross bar connector; the first cross bar is a cylindrical cross bar, and a first through hole is provided on the cross bar connector, and the first cross bar is matched and movably inserted into the first through hole.

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