阅读说明：本技术 一种汽车维修用举升机 (Lifting machine for automobile maintenance ) 是由 董记 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种汽车维修用举升机,包括举升架,所述举升架内壁对称开设有两个滑槽,两个所述滑槽内安装有举升机构,所述举升机构包括滑动连接在两个滑槽内壁的两个滑块,两个所述滑块侧壁固定连接有两个升降板,两个所述升降板上端均开设有弧形槽,所述弧形槽内壁滑动连接有弧形板,所述弧形板上端固定连接有支撑杆,所述支撑杆上端固定连接有支撑板,两个所述滑槽内壁安装有第一驱动机构,所述第一驱动机构包括转动连接在两个滑槽内壁的两个往复丝杠,两个所述往复丝杠侧壁分别与两个滑块螺纹连接。本发明中通过驱动电机反向转动,带动汽车转动,对汽车的角度进行调节,便于维修人员对汽车不同的部位进行检查维修。(The invention discloses a lifting machine for automobile maintenance, which comprises a lifting frame, wherein two sliding grooves are symmetrically formed in the inner wall of the lifting frame, lifting mechanisms are arranged in the two sliding grooves, each lifting mechanism comprises two sliding blocks which are connected to the inner walls of the two sliding grooves in a sliding mode, two lifting plates are fixedly connected to the side walls of the two sliding blocks, arc-shaped grooves are formed in the upper ends of the two lifting plates, the inner walls of the arc-shaped grooves are connected with arc-shaped plates in a sliding mode, supporting rods are fixedly connected to the upper ends of the arc-shaped plates, supporting plates are fixedly connected to the upper ends of the supporting rods, first driving mechanisms are arranged on the inner walls of the two sliding grooves, each first driving mechanism comprises two reciprocating lead screws which are rotatably connected to the inner walls of the two sliding grooves, and the side walls of the two reciprocating lead screws are respectively in threaded connection with the two sliding blocks. According to the automobile angle adjusting device, the driving motor rotates reversely to drive the automobile to rotate, so that the angle of the automobile is adjusted, and a maintenance worker can conveniently inspect and maintain different parts of the automobile.)

1. The utility model provides a lifting machine for auto repair, includes lifting frame (1), its characterized in that, two spout (2) have been seted up to lifting frame (1) inner wall symmetry, two install lifting mechanism in spout (2), lifting mechanism includes two slider (3) of sliding connection at two spout (2) inner walls, two slider (3) lateral wall fixedly connected with two lifter plates (301), two arc wall (302) have all been seted up to lifter plate (301) upper end, arc wall (302) inner wall sliding connection has arc (303), arc (303) upper end fixedly connected with bracing piece (304), bracing piece (304) upper end fixedly connected with backup pad (305), two a actuating mechanism is installed to spout (2) inner wall, a actuating mechanism is including rotating two reciprocal lead screw (4) of connection at two spout (2) inner walls, the side walls of the two reciprocating lead screws (4) are respectively in threaded connection with the two sliding blocks (3), and a motor (401) for driving the two reciprocating lead screws (4) to rotate is mounted on the lifting frame (1);

two install second actuating mechanism on bracing piece (304), second actuating mechanism includes ring gear (5) of fixed connection at two bracing piece (304) lateral walls, two lifter plate (301) lateral wall passes through dead lever fixedly connected with diaphragm (501), diaphragm (501) upper end is rotated and is connected with actuating lever (502), actuating lever (502) lateral wall fixedly connected with incomplete gear (503), incomplete gear (503) are connected with ring gear (5) meshing, two springs (504), two of arc wall (302) inner wall fixedly connected with the spring (504) other end respectively with two arc (303) fixed connection.

2. The automobile maintenance lifting machine according to claim 1, characterized in that the upper ends of the two reciprocating lead screws (4) penetrate through the upper end of the lifting frame (1) and are fixedly connected with two first one-way bearings (402), the output end of the motor (401) is fixedly connected with one of the first one-way bearings (402), and the side walls of the two first one-way bearings (402) are fixedly connected with two driving wheels (403).

3. The vehicle maintenance lifting machine according to claim 2, wherein a third driving mechanism is mounted on the lifting frame (1), the third driving mechanism comprises a mounting plate (6) fixedly connected with the side wall of the lifting frame (1), the lower end of the mounting plate (6) is rotatably connected with a rotating rod (601), the side wall of the rotating rod (601) is symmetrically and fixedly connected with two clamping blocks (602), the upper end of the driving rod (502) is provided with a vertical slot (603) matched with the rotating rod (601), two clamping grooves (604) matched with the clamping blocks (602) are symmetrically formed in the inner wall of the vertical groove (603), the upper end of the rotating rod (601) penetrates through the lower end of the mounting plate (6) and is fixedly connected with a second one-way bearing (605), and the side wall of the second one-way bearing (605) is fixedly connected with a driven wheel (606), and the two driving wheels (403) and the driven wheel (606) are connected through a synchronous belt.

4. The lifting machine for automobile maintenance according to claim 3, characterized in that a cleaning mechanism is installed on two lifting plates (301), the cleaning mechanism comprises four fixing plates (7) which are symmetrically and fixedly connected to the side walls of the two lifting plates (301), the four fixing plates (7) are rotatably connected to the upper ends of the first rotating shafts (701), a cleaning disc (702) is fixedly connected to the upper end of the first rotating shafts (701), the cleaning disc (702) is arranged in an inclined manner, and a plurality of water spraying holes (703) are formed in the upper end of the cleaning disc (702).

5. The automobile maintenance lifting machine according to claim 4, characterized in that a fourth driving mechanism is installed on two of the sliding blocks (3), the fourth driving mechanism comprises four vertical plates (8) symmetrically and fixedly connected to the side walls of the two sliding blocks (3), the four side walls of the vertical plates (8) are rotatably connected with a second rotating shaft (801), a first bevel gear (802) is fixedly connected to the side wall of the second rotating shaft (801), the lower end of the first rotating shaft (701) penetrates through the lower end of the fixing plate (7) and is fixedly connected with a second bevel gear (803), and the first bevel gear (802) is meshed with the second bevel gear (803).

6. The lifting machine for automobile maintenance according to claim 5, characterized in that a fifth driving mechanism is installed on the second rotating shaft (801), the fifth driving mechanism comprises a gear (9) fixedly connected to the side wall of the second rotating shaft (801), two grooves (901) are symmetrically formed in the inner walls of the two sliding grooves (2), racks (902) are connected to the inner walls of the two grooves (901) in a sliding manner, and the racks (902) are meshed with the gear (9).

7. The automobile maintenance lifting machine according to claim 6, characterized in that a plurality of conductive springs (903) are fixedly connected to the inner wall of the groove (901), the other ends of the plurality of conductive springs (903) are fixedly connected to the side wall of the rack (902), and the plurality of conductive springs (903) are coupled to the motor (401) through diodes.

Technical Field

The invention relates to the technical field of automobile maintenance, in particular to a lifting machine for automobile maintenance.

Background

The automobile lifter is an automobile maintenance machine used in the automobile industry, and is required to be used for the overhaul and maintenance of automobiles, and at present, the automobile lifter is equipped in 4S shops and repair shops.

Present automobile elevator is in the use, because the structure of itself is comparatively fixed, can't carry out the regulation of angle to the automobile in lifting, the position that is sheltered from is inconvenient to be examined and maintained a bit, still need put the automobile down again, lift the maintenance after the adjustment position again, it is more troublesome, in addition, present automobile elevator lacks belt cleaning device, the chassis of most automobile all has more mud dirt, these mud dirt can shelter from the part on automobile chassis, influence the maintainer and maintain.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a lifter for automobile maintenance.

In order to achieve the purpose, the invention adopts the following technical scheme:

a lifting machine for automobile maintenance comprises a lifting frame, wherein two sliding grooves are symmetrically formed in the inner wall of the lifting frame, lifting mechanisms are arranged in the two sliding grooves, each lifting mechanism comprises two sliding blocks which are connected to the inner walls of the two sliding grooves in a sliding manner, two lifting plates are fixedly connected to the side walls of the two sliding blocks, arc-shaped grooves are formed in the upper ends of the two lifting plates, arc-shaped plates are connected to the inner walls of the arc-shaped grooves in a sliding manner, supporting rods are fixedly connected to the upper ends of the supporting rods, first driving mechanisms are arranged on the inner walls of the two sliding grooves and comprise two reciprocating lead screws which are rotatably connected to the inner walls of the two sliding grooves, the side walls of the two reciprocating lead screws are respectively in threaded connection with the two sliding blocks, a motor is fixedly connected to the upper end of the lifting frame through a support, and two first one-way bearings are fixedly connected to the upper ends of the two reciprocating lead screws, the motor output end is fixedly connected with one of the first one-way bearings, and the side walls of the two first one-way bearings are fixedly connected with two driving wheels.

Further, two install second actuating mechanism on the bracing piece, second actuating mechanism includes fixed connection at the ring gear of two bracing piece lateral walls, two the lifter plate lateral wall passes through dead lever fixedly connected with diaphragm, the diaphragm upper end is rotated and is connected with the actuating lever, actuating lever lateral wall fixedly connected with incomplete gear, incomplete gear is connected with the ring gear meshing, two springs of arc wall inner wall fixedly connected with, two the spring other end respectively with two arc fixed connection.

Further, install third actuating mechanism on the lifting frame, third actuating mechanism includes fixed connection at the mounting panel of lifting frame lateral wall, the mounting panel lower extreme rotates and connects the bull stick, two fixture blocks of bull stick lateral wall symmetry fixedly connected with, actuating lever upper end seted up with the bull stick complex erect the groove, erect inslot wall symmetry and seted up two and fixture block complex draw-in grooves, the bull stick upper end runs through the one-way bearing of mounting panel lower extreme and fixedly connected with second, the one-way bearing lateral wall fixedly connected with of second is from the driving wheel, two connect through the hold-in range between action wheel and the follow driving wheel.

Further, two install wiper mechanism on the lifter plate, wiper mechanism includes four fixed plates of symmetry fixed connection at two lifter plate lateral walls, four the fixed plate upper end all rotates and is connected with first pivot, first pivot upper end fixedly connected with washs the dish, it sets up for the slope to wash the dish, wash a plurality of hole for water sprayings have been seted up to the dish upper end.

Furthermore, a fourth driving mechanism is installed on the two sliding blocks and comprises four vertical plates which are symmetrically and fixedly connected to the side walls of the two sliding blocks, the side walls of the four vertical plates are rotatably connected with a second rotating shaft, a first bevel gear is fixedly connected to the side wall of the second rotating shaft, the lower end of the first rotating shaft penetrates through the lower end of the fixing plate and is fixedly connected with a second bevel gear, and the first bevel gear is meshed with the second bevel gear.

Further, install fifth actuating mechanism in the second pivot, fifth actuating mechanism includes fixed connection at the gear of second pivot lateral wall, two the equal symmetry of spout inner wall has seted up two recesses, two the equal sliding connection of recess inner wall has the rack, the rack is connected with gear engagement.

Further, the inner wall of the groove is fixedly connected with a plurality of conductive springs, the other ends of the conductive springs are fixedly connected with the side wall of the rack, and the conductive springs are connected with the motor in a coupling mode through diodes.

The invention has the following advantages:

1. the second driving mechanism and the third driving mechanism are arranged to drive the automobile to rotate, so that the angle of the automobile is adjusted, and maintenance personnel can conveniently inspect and maintain different parts of the automobile;

2. the cleaning disc is driven to rotate by arranging the cleaning mechanism, the fourth driving mechanism and the fifth driving mechanism, and water is supplied into the cleaning disc by external water supply equipment, so that the cleaning disc is cleaned on the automobile chassis in the lifting process of the automobile, and the influence on maintenance caused by excessive dust and dirt on the automobile chassis is avoided;

3. through setting up the gear, the rack, the recess, diode and conductive spring, when not giving the motor circular telegram or letting in reverse current for the motor, this moment under the effect of diode, conductive spring can not circular telegram, be in the natural state, under conductive spring's effect, the rack can with the gear 9 inseparable meshing, make rack and gear be in the state of supporting each other tightly, the lifting of car of itself is fixed to be through the locking between slider and the reciprocal lead screw, the rack supports tightly each other with the gear and can share the partial pressure that the car gave, alleviate the pressure that slider and reciprocal lead screw junction received, improve the life of slider and reciprocal lead screw.

Drawings

Fig. 1 is a schematic perspective view of a lifter for vehicle maintenance according to the present invention;

FIG. 2 is a schematic rear view of the structure of FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 5 is a schematic cross-sectional view of the drive rod and the turn rod of FIG. 1;

FIG. 6 is a schematic cross-sectional view of the lift rack of FIG. 1.

In the figure: 1 lifting frame, 2 sliding grooves, 3 sliding blocks, 301 lifting plates, 302 arc-shaped grooves, 303 arc-shaped plates, 304 supporting rods, 305 supporting plates, 4 reciprocating screw rods, 401 motors, 402 first one-way bearings, 403 driving wheels, 5 toothed rings, 501 transverse plates, 502 driving rods, 503 incomplete gears, 504 springs, 6 mounting plates, 601 rotating rods, 602 clamping blocks, 603 vertical grooves, 604 clamping grooves, 605 second one-way bearings, 606 driven wheels, 7 fixing plates, 701 first rotating shafts, 702 cleaning discs, 703 water spray holes, 8 vertical plates, 801, second rotating shafts, 802 first bevel gears, 803 second bevel gears, 9 gears, 901 grooves, 902 racks and 903 conductive springs.

Detailed Description

Referring to fig. 1-6, a lifting machine for automobile maintenance comprises a lifting frame 1, it should be noted that, a slant seat is fixedly connected to the side wall of the lifting frame 1, so as to facilitate the automobile to drive into the lifting machine, two sliding chutes 2 are symmetrically arranged on the inner wall of the lifting frame 1, lifting mechanisms are arranged in the two sliding chutes 2, each lifting mechanism comprises two sliding blocks 3 slidably connected to the inner walls of the two sliding chutes 2, two lifting plates 301 are fixedly connected to the side walls of the two sliding blocks 3, arc-shaped grooves 302 are respectively arranged at the upper ends of the two lifting plates 301, an arc-shaped plate 303 is slidably connected to the inner wall of the arc-shaped groove 302, a support rod 304 is fixedly connected to the upper end of the arc-shaped plate 303, a support plate 305 is fixedly connected to the upper end of the support rod 304, a first driving mechanism is arranged on the inner walls of the two sliding chutes 2, the first driving mechanism comprises two reciprocating lead screws 4 rotatably connected to the inner walls of the two sliding chutes 2, the two reciprocating lead screws 4 are respectively in threaded connection with the two sliding blocks 3, the upper end of the lifting frame 1 is fixedly connected with a motor 401 through a support, the upper ends of the two reciprocating lead screws 4 penetrate through the upper end of the lifting frame 1 and are fixedly connected with two first one-way bearings 402, the output end of the motor 401 is fixedly connected with one of the first one-way bearings 402, and the side walls of the two first one-way bearings 402 are fixedly connected with two driving wheels 403.

Install second actuating mechanism on two bracing pieces 304, second actuating mechanism includes the ring gear 5 of fixed connection at two bracing pieces 304 lateral walls, two lifter plate 301 lateral walls pass through dead lever fixedly connected with diaphragm 501, the diaphragm 501 upper end is rotated and is connected with the actuating lever 502, the incomplete gear 503 of actuating lever 502 lateral wall fixedly connected with, incomplete gear 503 is connected with the meshing of ring gear 5, two springs 504 of two arc wall 302 inner wall fixedly connected with, two springs 504 other ends respectively with two arc 303 fixed connection.

It should be noted that, when the incomplete gear 503 rotates to a position where it is no longer meshed with the gear ring 5, the two arc plates 303 slide back in the arc groove 302 under the action of the two springs 504, and the arc plates 303 drive the support plate 305 to rotate through the support rod 304, so as to drive the automobile to rotate, thereby resetting the automobile.

When the lifting plate 301 moves upward, the horizontal plate 501 is driven to move upward, and further the driving rod 502 is driven to move upward, and during the process that the driving rod 502 moves upward, the rotating rod 601 and the latch 602 will slowly enter the vertical slot 603 and the latch slot 604, the motor 401 is driven to rotate reversely by supplying reverse current to the motor 401, the motor 401 drives the driven wheel 606 to rotate through the first one-way bearing 402 and the driving wheel 403, drives the second one-way bearing 605 to rotate, thereby driving the rotating rod 601 and the fixture block 602 to rotate, the rotating rod 601 and the fixture block 602 will cooperate with the vertical slot 603 and the clamping slot 604 to drive the driving rod 502 to rotate, drive the incomplete gear 503 to rotate, drive the gear ring 5 to rotate, thereby driving the two arc plates 303 to slide on the inner wall of the arc groove 302, driving the two support plates 305 to rotate around the center of the gear ring 5, further driving the automobile to rotate, the angle of the automobile is adjusted, so that maintenance personnel can conveniently check and maintain different parts of the automobile.

Install third actuating mechanism on lifting frame 1, third actuating mechanism includes fixed connection at the mounting panel 6 of lifting frame 1 lateral wall, 6 lower extremes of mounting panel rotate and connect bull stick 601, two fixture blocks 602 of bull stick 601 lateral wall symmetry fixedly connected with, actuating lever 502 upper end seted up with bull stick 601 complex perpendicular groove 603, perpendicular groove 603 inner wall symmetry seted up two with fixture block 602 complex draw-in grooves 604, bull stick 601 upper end runs through mounting panel 6 lower extreme and fixedly connected with second one-way bearing 605, second one-way bearing 605 lateral wall fixedly connected with follows driving wheel 606, two action wheels 403 and connect through the hold-in range from between the driving wheel 606.

It should be noted that, the output end of the motor 401 is fixedly connected with the outer ring of one of the first one-way bearings 402, the two reciprocating lead screws 4 are respectively fixedly connected with the inner rings of the two first one-way bearings 402, the rotating rod 601 is fixedly connected with the inner ring of the second one-way bearing 605, the first one-way bearing 402 and the second one-way bearing 605 are arranged in opposite directions, when the motor 401 rotates in the forward direction, the motor 401 drives the outer ring of the first one-way bearing 402 to rotate, at this time, the outer ring and the inner ring of the first one-way bearing 402 are locked, and further, the outer ring drives the inner ring to rotate together, so that the reciprocating lead screw 4 rotates, at this time, the outer ring of the second one-way bearing 605 rotates, but the inner ring does not rotate, so that the rotating rod 601 does not rotate, when the motor 401 is driven to rotate in the reverse direction, the motor 401 drives the outer ring of the first one-way bearing 402 to rotate, at this time, the reciprocating lead screw 4 does not rotate, and the outer ring rotates, so that the driving wheel 403 is driven by the outer ring rotates, the driven wheel 606 is driven to rotate, so as to drive the outer ring of the second one-way bearing 605 to rotate, at this time, the outer ring of the second one-way bearing 605 is locked with the inner ring, and the outer ring can drive the inner ring to rotate together, so as to drive the rotating rod 601 to rotate.

Install wiper mechanism on two lifter plates 301, wiper mechanism includes four fixed plates 7 of symmetry fixed connection at two lifter plates 301 lateral walls, four fixed plate 7 upper ends are all rotated and are connected with first pivot 701, first pivot 701 upper end fixedly connected with washs dish 702, wash dish 702 and set up for the slope, wash a plurality of hole for water jets 703 in dish 702 upper end, it is required to explain, wash the inside cavity that is of dish 702, wash the inside pump water that carries out of dish 702 through external pump water equipment case, the inside water that gets into and wash dish 702 can spray out through hole for water jets 703.

The four driving mechanisms are arranged on the two sliding blocks 3 and comprise four vertical plates 8 which are symmetrically and fixedly connected to the side walls of the two sliding blocks 3, the side walls of the four vertical plates 8 are respectively and rotatably connected with a second rotating shaft 801, the side wall of the second rotating shaft 801 is fixedly connected with a first bevel gear 802, the lower end of the first rotating shaft 701 penetrates through the lower end of the fixing plate 7 and is fixedly connected with a second bevel gear 803, and the first bevel gear 802 is meshed with the second bevel gear 803.

Install fifth actuating mechanism on second pivot 801, fifth actuating mechanism includes gear 9 of fixed connection at second pivot 801 lateral wall, and two recesses 901 have all been seted up to two 2 inner walls of spout, and two equal sliding connection of recess 901 inner walls have rack 902, and rack 902 is connected with the gear 9 meshing.

The inner wall of the groove 901 is fixedly connected with a plurality of conductive springs 903, the other ends of the conductive springs 903 are fixedly connected with the side wall of the rack 902, the conductive springs 903 are coupled with the motor 401 through diodes, the side wall of each conductive spring 903 is sleeved with a rubber sleeve to achieve a good insulation effect, and it needs to be stated that the diodes allow forward current to pass through, but can block reverse current, and the groove is prior art.

It should be noted that when a forward current is applied to the motor 401, the driving motor 401 drives the lifting plate 301 to lift the automobile, at this time, under the action of the diode, the conductive spring 903 is energized, so that the conductive spring 903 is contracted to drive the rack 902 to move, but at this time, the rack 902 and the gear 9 are still in a meshed state, when the motor 401 is not energized or a reverse current is applied to the motor 401, at this time, under the action of the diode, the conductive spring 903 is not energized and is in a natural state, under the action of the conductive spring 903, the rack 902 and the gear 9 are tightly meshed, so that the rack 902 and the gear 9 are in a mutually abutted state, the lifting fixation of the automobile is realized by locking between the slider 3 and the reciprocating lead screw 4, the rack 902 and the gear 9 are abutted to share a partial pressure applied to the automobile, and the pressure applied to the connection between the slider 3 and the reciprocating lead screw 4 is reduced, the service life of the sliding block 3 and the reciprocating screw rod 4 is prolonged.

Two slider 3 when upwards moving, can drive riser 8 rebound, drive second pivot 801 rebound, drive gear 9 rebound, because gear 9 is connected with the meshing of rack 902, under the effect of rack 902, can rotate when gear 9 rebound, and then gear 9 can drive second pivot 801 and rotate, drive first bevel gear 802 and rotate, drive second bevel gear 803 and rotate, and then drive and wash a set 702 and rotate, and wash the water spout 703 blowout from the hole for water spraying in the dish 702, and then make pivoted wash dish 702 wash vehicle chassis, avoid vehicle chassis dust dirt too much, produce the influence to the maintenance.

It should be noted that, by arranging the motor 401 to drive the lifting mechanism, the first driving mechanism, the second driving mechanism, the third driving mechanism, the fourth driving mechanism, the fifth driving mechanism and the cleaning mechanism to work, the investment of power equipment is greatly reduced, and resources are saved.

In the invention, a forward current is introduced into a motor 401 to drive the motor 401 to rotate in a forward direction, and an external water pumping device is started to supply water into a cleaning disc 702 at the same time, the motor 401 can drive one of first one-way bearings 402 to rotate to drive one of driving wheels 403 to rotate, the driving wheel 403 can drive the other driving wheel 403 to rotate through a synchronous belt to drive the other one-way bearing 402 to rotate, so that two reciprocating lead screws 4 are driven to rotate synchronously, the two reciprocating lead screws 4 rotate to drive two sliding blocks 3 to slide on the inner walls of two sliding grooves 2 respectively, so that two lifting plates 301 are driven to move upwards, and then the lifting plates 301 drive a supporting plate 305 to move upwards through an arc-shaped plate 303 and a supporting rod 304, so that the supporting plate 305 is abutted against an automobile chassis, so that an automobile is driven to move upwards, and the automobile is lifted;

when forward current is introduced to the motor 401, the conductive spring 903 is electrified under the action of the diode, so that the conductive spring 903 is contracted to drive the rack 902 to move, and at the moment, the rack 902 is still in meshed connection with the gear 9;

when the two sliding blocks 3 move upwards, the vertical plates 8 can be driven to move upwards, the second rotating shaft 801 is driven to move upwards, the gear 9 is meshed with the rack 902, under the action of the rack 902, the gear 9 moves upwards and rotates simultaneously, the gear 9 drives the second rotating shaft 801 to rotate, the first bevel gear 802 is driven to rotate, the second bevel gear 803 is driven to rotate, the cleaning disc 702 is driven to rotate, water in the cleaning disc 702 can be sprayed out from the water spraying holes 703, and the rotating cleaning disc 702 can clean the automobile chassis, so that the phenomenon that the automobile chassis is excessively dusty and affects maintenance is avoided;

when the lifting plate 301 moves upward, the horizontal plate 501 is driven to move upward, and further the driving rod 502 is driven to move upward, and during the process that the driving rod 502 moves upward, the rotating rod 601 and the latch 602 will slowly enter the vertical slot 603 and the latch slot 604, the motor 401 is driven to rotate reversely by supplying reverse current to the motor 401, the motor 401 drives the driven wheel 606 to rotate through the first one-way bearing 402 and the driving wheel 403, drives the second one-way bearing 605 to rotate, thereby driving the rotating rod 601 and the fixture block 602 to rotate, the rotating rod 601 and the fixture block 602 will cooperate with the vertical slot 603 and the clamping slot 604 to drive the driving rod 502 to rotate, drive the incomplete gear 503 to rotate, drive the gear ring 5 to rotate, thereby driving the two arc plates 303 to slide on the inner wall of the arc groove 302, driving the two support plates 305 to rotate around the center of the gear ring 5, further driving the automobile to rotate, the angle of the automobile is adjusted, so that maintenance personnel can conveniently check and maintain different parts of the automobile;

when the incomplete gear 503 rotates to be no longer meshed with the gear ring 5, the spring 504 drives the arc-shaped plate 303 to slide back on the inner wall of the arc-shaped groove 302, so as to drive the automobile to rotate and reset the automobile;

when the motor 401 is electrified with reverse current or is not electrified, the conductive spring 903 cannot be electrified under the action of the diode and is in a normal state, the rack 902 can be tightly meshed with the gear 9 under the action of the conductive spring 903, the pressure given by an automobile at the joint of the sliding block 3 and the reciprocating lead screw 4 can be conveniently dispersed, and the service lives of the sliding block 3 and the reciprocating lead screw 4 are prolonged.