Lying plate device for maintaining automobile chassis

Abstract

The utility model provides a creeper device for maintaining an automobile chassis, which comprises a bottom plate, mounting racks are arranged on two sides of the bottom plate along the length direction of the bottom plate, the top of each mounting rack is higher than the top of the bottom plate, mounting grooves are arranged at two ends of each mounting rack, and driving rods are slidably arranged in the mounting grooves along the vertical direction. A limiting block is arranged in the mounting groove in a sliding mode, a penetrating hole allowing the limiting block to penetrate through is formed in the side wall, close to the bottom plate, of the mounting frame, a limiting hole allowing the limiting block to be inserted is formed in the side wall of the bottom plate, and an inclined groove is formed in the top of the limiting block and used for abutting against the bottom end of the driving rod; the mounting rack is provided with a through hole, the bottom plate is provided with an inclined groove, the inclined surface of the inclined groove is arranged at an acute angle towards the direction of the through hole, a magnetic piece is fixedly arranged on the side wall of the mounting rack, a magnetic attraction piece is arranged on the side wall of the bottom plate, and the magnetic attraction piece and the magnetic piece are in mutual magnetic attraction fit. And potential safety hazards in the maintenance process are reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair technology, and more specifically, to a reclining device for automotive chassis maintenance. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] When inspecting the underside of a vehicle, repair personnel need to enter the vehicle to perform tasks such as changing engine oil, checking the brake system, or repairing the exhaust pipe. In this process, the vehicle is first raised to a certain height using a jack, and then the repair personnel lie on a platform and slide down to the underside of the vehicle to carry out the inspection work.

[0004] Chinese patent CN222553541U discloses a reclining board for automobile repair, including a main frame, a flexible reclining mat, and casters. The plastic main frame includes a front panel, a rear panel, and two side supports. A folding structure is set in the middle of the support. The front and rear panels can rotate relative to each other or rotate in opposite directions at the folding structure. When unfolded, the side supports unfold through the folding structure, and bolts are inserted into the sockets to lock them into a flat surface. Repair personnel can lie on it and slide under the car to repair the vehicle.

[0005] However, the aforementioned technologies have the following drawbacks: in actual use, when workers lie on a platform to enter under the vehicle, and the vehicle body is completely lifted by jacks, there is a huge safety hazard for maintenance workers when the jacks malfunction. Utility Model Content

[0006] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a reclining device for automobile chassis maintenance, which can provide a certain degree of protection for personnel entering the bottom of the automobile for maintenance and reduce safety hazards during the maintenance process.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A reclining device for automobile chassis maintenance includes a base plate. Mounting brackets are arranged along the length of the base plate on both sides, with the top of each mounting bracket higher than the top of the base plate. Mounting grooves are provided at both ends of each mounting bracket. A drive rod is slidably arranged vertically within each mounting groove. A limiting block is slidably arranged within each mounting groove. A through hole for the limiting block to pass through is provided on the side wall of the mounting bracket near the base plate. A limiting hole for the limiting block to insert into is provided on the side wall of the base plate. An inclined groove is provided on the top of the limiting block, which abuts against the bottom end of the drive rod. The inclined surface of the inclined groove is set at an acute angle towards the through hole. A magnetic component is fixedly arranged on the side wall of the mounting bracket, and a magnetic suction component is provided on the side wall of the base plate. The magnetic suction component and the magnetic component are magnetically attracted to each other.

[0009] By adopting the above technical solution, when repairing a car chassis, the chassis is first lifted using a jack. Then, the worker lies on the chassis and slides under the car. If the jack malfunctions, the chassis falls. At this point, the chassis first contacts the top of the drive rod, causing it to move downwards. The bottom of the drive rod enters the inclined groove and abuts against its slope. As the drive rod continues to move downwards, it moves the limiting block away from the limiting hole, eventually completely disengaging it. At this point, the chassis, losing the support of the limiting block, overcomes magnetic attraction and falls to the ground under its own weight and the worker's weight. This increases the distance between the worker and the chassis, effectively protecting the worker and significantly reducing safety hazards during the repair process.

[0010] In some possible embodiments, a first guide groove is provided on the bottom wall of the mounting groove along the length direction of the limiting block, a first guide block is slidably disposed in the first guide groove, the top of the first guide block is fixedly connected to the bottom of the limiting block, a first elastic member is provided in the first guide groove, and the first elastic member acts on the first guide block to make the limiting block move toward the direction close to the limiting hole.

[0011] By adopting the above technical solution, during the downward movement of the drive rod, the drive rod presses the inclined surface of the inclined groove, causing the limiting block to move away from the limiting hole in the mounting groove. The limiting block drives the first guide block to move in the first guide groove, thereby guiding the movement of the limiting block to a certain extent, improving the accuracy of the limiting block's movement, effectively avoiding jamming caused by the limiting block's skewed movement during the movement, and further improving the protection effect for the staff. When the car chassis is not in contact with the drive rod, the elastic force of the first elastic element acts on the first guide block, ensuring that the end of the limiting block is always located in the limiting hole, preventing the limiting block from dislodging from the limiting hole due to vibration, and improving the overall stability and reliability of the device in actual use.

[0012] In some possible embodiments, a receiving hole is provided on the side wall of the mounting groove away from the through hole, the receiving hole being used to insert the end of the limiting block away from the through hole.

[0013] By adopting the above technical solution, the drive rod moves downward under the action of the car chassis, and the limiting block moves away from the limiting hole under the action of the drive rod. At this time, the end of the limiting block away from the through hole is inserted into the receiving hole, which plays a role in accommodating the position of the limiting block in the mounting groove. This ensures that the end of the limiting block can be completely disengaged from the limiting hole, allowing the base plate to fall smoothly and improving the protection effect for the workers.

[0014] In some possible embodiments, a mounting part is rotatably disposed within the mounting groove, and a through mounting hole is formed in the mounting part along its length. The drive rod slides through the mounting hole along the length of the mounting part. A rotating shaft is fixedly disposed on the side wall at one end of the mounting part. A rotating hole for rotatably connecting the rotating shaft is formed in the inner wall of the mounting groove. A second elastic member is disposed on the mounting part, and the second elastic member acts on the drive rod to move the drive rod away from the rotating shaft. A positioning member is disposed on the mounting part to limit the position of the drive rod within the mounting groove.

[0015] By adopting the above technical solution, during the maintenance process, before the staff enters the bottom of the car, they first rotate the mounting part and limit the rotation position of the mounting part by the positioning component, so that the mounting part and the drive rod are both in a vertical state. At this time, the drive rod moves away from the rotation axis under the action of the second elastic component, thereby preventing the drive rod from contacting the limit block. This effectively prevents the drive rod from causing the limit block to disengage from the limit hole due to vibration or accidental contact, further improving the reliability and stability of the device in actual use.

[0016] In some possible embodiments, a second guide groove is provided on the inner wall of the mounting hole along the length direction of the mounting portion, and a second guide block is slidably disposed in the second guide groove, the second guide block being fixedly connected to the side wall of the drive rod.

[0017] By adopting the above technical solution, during the movement of the drive rod in the mounting hole, the drive rod drives the second guide block to move in the second guide groove. The side wall of the second guide block is always in contact with the inner wall of the second guide groove, thereby effectively guiding the movement of the drive rod. This effectively avoids the limit block from getting stuck due to movement deviation during the movement, thus ensuring that the drive rod can smoothly drive the limit block to move, further improving the protection effect for the staff.

[0018] In some possible embodiments, the positioning element is configured as a positioning pin, a first positioning hole is provided on the side wall of the mounting part, the positioning element is slidably inserted into the first positioning hole, a second positioning hole is provided on the side wall of the mounting groove for the positioning element to be inserted, and a third elastic element is provided in the first positioning hole, the third elastic element acts on the positioning element to make the positioning element move away from the first positioning hole.

[0019] In some possible embodiments, two second positioning holes are provided, and the two second positioning holes are arranged at 90° intervals along the axis of rotation. An arc-shaped groove is provided on the side wall of the mounting groove, and the arc-shaped groove is used for sliding connection of the positioning component. The two ends of the arc-shaped groove are respectively connected to the two second positioning holes.

[0020] By adopting the above technical solution, the mounting part is rotated. When the mounting part is in a vertical state, the positioning part is inserted into the second positioning hole under the action of the third elastic element, which plays a positioning role for the mounting part. This ensures that the mounting part is always in a vertical state during the maintenance process, thereby ensuring that when the car chassis falls, the drive rod can immediately contact the car floor and provide immediate protection for the staff.

[0021] In some possible embodiments, a ball bearing is embedded at the end of the positioning element, the ball bearing being used to roll into contact with the bottom wall of the arcuate groove.

[0022] By adopting the above technical solution, the ball bearings transform the sliding friction between the end of the positioning component and the bottom wall of the arc groove into rolling friction, thereby effectively reducing the friction between the end of the positioning component and the bottom wall of the arc groove. This facilitates the movement of the positioning component within the arc groove while also reducing the wear between the end of the positioning component and the bottom wall of the arc groove.

[0023] In some possible embodiments, a connecting hole is provided on the side wall of the mounting bracket away from the base plate. The connecting hole communicates with the second positioning hole. A top rod is slidably inserted into the connecting hole. One end of the top rod is used to abut against the end of the positioning member, and the other end extends out of the connecting hole and is fixedly provided with a button.

[0024] By adopting the above technical solution, after the car repair is completed, the staff can slide the entire device out of the bottom of the car. By pressing the top rod, the positioning part can be pushed away from the second positioning hole. Then, the mounting part can be driven to deflect into the mounting groove, so that the mounting part is completely located in the mounting groove, completing the storage of the device. This reduces the space occupied and also effectively prevents the limit block from dislodging from the limit hole due to accidental contact with the drive rod by personnel, thus improving the overall practicality of the device.

[0025] In some possible embodiments, a locking key is fixedly provided on the push rod along the axial direction of the push rod, and a locking groove is formed on the inner wall of the connecting hole along the axial direction of the push rod, wherein the locking key is slidably connected to the locking groove.

[0026] By adopting the above technical solution, during the pressing of the push rod, the locking key slides in the locking groove. Since the locking key cannot disengage from the locking groove, the push rod can be effectively prevented from disengaging from the connecting hole, thus improving the reliability of the device during use.

[0027] In summary, the technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0028] 1. When the jack fails and causes the car chassis to collapse, the drive rod pushes the limit block out of the limit hole through the inclined groove design, so that the bottom plate automatically drops, quickly increasing the safe distance between the maintenance personnel and the chassis, and significantly reducing the risk of crushing.

[0029] 2. By cooperating with the first guide groove and the first guide block, and the second guide groove and the second guide block, the movement trajectory of the limit block and the drive rod is ensured to be accurate, avoiding jamming or deflection. Combined with the automatic reset function of the elastic element, the reliable locking of the device under normal conditions is guaranteed.

[0030] 3. The positioning pin can be released by operating the push rod via the button, allowing the mounting part to be quickly stored in the mounting slot, reducing space occupation. The cooperation between the key and the slot prevents the push rod from falling off, while avoiding accidental triggering of the limit release during daily use. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0032] Figure 2 This is a cross-sectional view of the mounting bracket according to an embodiment of the present utility model;

[0033] Figure 3 This is a cross-sectional view of the mounting section according to an embodiment of the present utility model;

[0034] Figure 4 This is a cross-sectional view of the arc-shaped groove, the first positioning hole, and the second hole according to an embodiment of the present utility model;

[0035] Figure 5 for Figure 3 Enlarged view of part A in the image;

[0036] Figure 6 This is a schematic diagram of the structure of the mounting part of this utility model located in the mounting groove.

[0037] Icons: 1. Base plate; 2. Mounting bracket; 21. Mounting slot; 3. Mounting part; 31. Rotating shaft; 32. Rotating hole; 33. Mounting hole; 4. Drive rod; 41. Limiting block; 42. Through hole; 43. Limiting hole; 44. Inclined groove; 45. First guide groove; 46. First guide block; 47. First elastic element; 48. Receiving hole; 5. Second guide groove; 51. Second guide block; 52. Second elastic element; 6. Positioning element; 61. First positioning hole; 62. Second positioning hole; 63. Third elastic element; 64. Arc groove; 65. Ball bearing; 7. Connecting hole; 71. Top rod; 72. Button; 73. Locking key; 74. Locking groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] The following is for reference Figures 1 to 6 The present invention will be described in further detail below.

[0040] Reference Figure 1 and Figure 2 A reclining platform device for automobile chassis maintenance includes a base plate 1. Mounting brackets 2 are provided on both sides of the base plate 1 along its length. Self-locking casters are installed at both ends of the bottom of the mounting brackets 2. The top of the mounting brackets 2 is higher than the top of the base plate 1. Mounting grooves 21 are provided at both ends of each mounting bracket 2. Mounting parts 3 are rotatably provided in each mounting groove 21. A rotating shaft 31 is fixedly provided on the side wall of one end of the mounting part 3. There are two rotating shafts 31, which are symmetrically arranged. Rotating holes 32 are provided on the inner walls of both sides of the mounting groove 21 for the rotating shafts 31 to rotatably connect. As a possible embodiment of this utility model, the rotating shafts 31 and the rotating holes 32 are rotatably connected by bearings (not shown in the figure).

[0041] Reference Figure 3 A through mounting hole 33 is provided on the inner wall of the mounting part 3 along the length of the mounting part 3. A drive rod 4 is slidably inserted through the mounting hole 33. A limit block 41 is slidably provided on the inner bottom wall of the mounting groove 21 in the horizontal direction. A through hole 42 is provided on the side wall of the mounting bracket 2 near the base plate 1 for the limit block 41 to pass through. A limit hole 43 is provided on the side wall of the base plate 1 for the limit block 41 to be inserted. An inclined groove 44 is provided on the top of the limit block 41. The inclined groove 44 is used to abut against the bottom end of the drive rod 4. The inclined surface of the inclined groove 44 is set at an acute angle toward the through hole 42.

[0042] In one embodiment of this utility model, a magnetic component (not shown in the figure) is fixedly installed on the side wall of the mounting bracket 2, and a magnetic suction component (not shown in the figure) is installed on the side wall of the base plate 1. The magnetic suction component and the magnetic component are magnetically attracted to each other. The magnetic suction component can be a magnet, and the magnetic component can be a magnetic metal such as an iron sheet. In actual use, the tops of the two mounting brackets 2 on both sides of the base plate 1 can be connected by a connecting strap, which can further improve the structural stability of the device.

[0043] Reference Figure 3 and Figure 4 A first guide groove 45 is provided on the bottom wall of the mounting groove 21 along the length direction of the limiting block 41. A first guide block 46 is slidably disposed in the first guide groove 45. The top of the first guide block 46 is fixedly connected to the bottom of the limiting block 41. A first elastic member 47 is provided in the first guide groove 45. The first elastic member 47 acts on the first guide block 46 to make the limiting block 41 move toward the direction close to the limiting hole 43.

[0044] As one embodiment of this utility model, refer to Figure 3 The first elastic element 47 is configured as a compression spring. One end of the first elastic element 47 abuts against the side wall of the first guide block 46 away from the through hole 42, and the other end abuts against the inner wall of the first guide groove 45 away from the through hole 42. As another possible embodiment of the present invention, the first elastic element 47 can also be configured as a tension spring. When the first elastic element 47 is configured as a tension spring, one end of the first elastic element 47 is fixedly connected to the side wall of the first guide block 46 near the through hole 42, and the other end is fixedly connected to the inner wall of the first guide groove 45 near the first through hole 42.

[0045] During the downward movement of the drive rod 4, the drive rod 4 presses the inclined surface of the inclined groove 44, causing the limiting block 41 to move in the mounting groove 21 in a direction away from the limiting hole 43. The limiting block 41 drives the first guide block 46 to move in the first guide groove 45, thereby playing a certain guiding role in the movement of the limiting block 41, improving the accuracy of the movement of the limiting block 41, effectively avoiding jamming caused by the movement of the limiting block 41 due to skewness, and further improving the protection effect for the staff. When the car chassis is not in contact with the drive rod 4, the elastic force of the first elastic element 47 acts on the first guide block 46 to keep the end of the limiting block 41 always in the limiting hole 43, preventing the limiting block 41 from dislodging from the limiting hole 43 due to vibration, and improving the overall stability and reliability of the device in actual use.

[0046] Reference Figure 3 and Figure 4A receiving hole 48 is provided on the side wall of the mounting groove 21 away from the through hole 42. The receiving hole 48 is used to insert the end of the limiting block 41 away from the through hole 42. The drive rod 4 moves downward under the action of the vehicle chassis, and the limiting block 41 moves in the direction away from the limiting hole 43 under the action of the drive rod 4. At this time, the end of the limiting block 41 away from the through hole 42 is inserted into the receiving hole 48, which has the effect of accommodating the position of the limiting block 41 in the mounting groove 21. This ensures that the end of the limiting block 41 can be completely disengaged from the limiting hole 43, so that the base plate 1 can fall smoothly, improving the protection effect for the workers.

[0047] Reference Figure 3 A second elastic element 52 is provided on the mounting part 3. The second elastic element 52 acts on the drive rod 4 to move the drive rod 4 away from the rotation axis 31. A positioning element 6 is provided on the mounting part 3 to limit the position of the drive rod 4 in the mounting groove 21. A second guide groove 5 is provided on the inner wall of the mounting hole 33 along the length direction of the mounting part 3. A second guide block 51 is slidably disposed in the second guide groove 5 and is fixedly connected to the side wall of the drive rod 4.

[0048] As one embodiment of this utility model, refer to Figure 3 The second elastic element 52 is configured as a compression spring. The second elastic element 52 is disposed in the second guide groove 5. One end of the second elastic element 52 abuts against the side of the second guide block 51 near the rotating shaft 31, and the other end abuts against the inner wall of the second guide groove 5.

[0049] During maintenance, before the staff enters the bottom of the car, they first rotate the mounting part 3 and limit the rotation position of the mounting part 3 by the positioning part 6, so that the mounting part 3 and the drive rod 4 are both in a vertical state. At this time, the drive rod 4 moves away from the rotation axis 31 under the action of the second elastic member 52, thereby preventing the drive rod 4 from contacting the limiting block 41. This effectively prevents the drive rod 4 from causing the limiting block 41 to disengage from the limiting hole 43 due to vibration or accidental contact, further improving the reliability and stability of the device in actual use.

[0050] Reference Figure 3 In one embodiment of this utility model, the positioning member 6 is configured as a positioning pin. A first positioning hole 61 is provided on the side wall of the mounting part 3. The positioning member 6 is slidably inserted into the first positioning hole 61. A second positioning hole 62 is provided on the side wall of the mounting groove 21 for the positioning member 6 to be inserted. A third elastic member 63 is provided in the first positioning hole 61. The third elastic member 63 acts on the positioning member 6 to make the positioning member 6 move away from the first positioning hole 61.

[0051] Reference Figure 3As one embodiment of this utility model, the third elastic member 63 is configured as a compression spring, with one end of the third elastic member 63 fixedly connected to the tail of the limiting member and the other end fixedly connected to the inner wall of the first positioning hole 61.

[0052] Reference Figure 4 Two second positioning holes 62 are provided, and the two second positioning holes 62 are set at 90° intervals along the axis of the rotating shaft 31. An arc-shaped groove 64 is provided on the side wall of the mounting groove 21. The arc-shaped groove 64 is used for the sliding connection of the positioning component 6. The two ends of the arc-shaped groove 64 are respectively connected to the two second positioning holes 62.

[0053] Rotate the mounting part 3. When the mounting part 3 is in a vertical position, the positioning member 6 is inserted into the second positioning hole 62 under the action of the third elastic member 63, which plays a role in positioning the position of the mounting part 3. This ensures that the mounting part 3 is always in a vertical position during the maintenance process, thereby ensuring that when the car chassis falls, the drive rod 4 can immediately contact the car floor 1, thus providing immediate protection for the staff.

[0054] As one embodiment of this utility model, refer to Figure 3 A ball bearing 65 is embedded at the end of the positioning member 6, and the ball bearing 65 is used to make rolling contact with the bottom wall of the arc-shaped groove 64. The ball bearing 65 transforms the sliding friction between the end of the positioning member 6 and the bottom wall of the arc-shaped groove 64 into rolling friction, thereby effectively reducing the friction between the end of the positioning member 6 and the bottom wall of the arc-shaped groove 64. This facilitates the movement of the positioning member 6 within the arc-shaped groove 64 while also reducing wear between the end of the positioning member 6 and the bottom wall of the arc-shaped groove 64.

[0055] Reference Figure 3 A connecting hole 7 is provided on the side wall of the mounting bracket 2 away from the base plate 1. The connecting hole 7 communicates with the second positioning hole 62. A top rod 71 is slidably inserted in the connecting hole 7. One end of the top rod 71 is used to abut against the end of the positioning member 6, and the other end extends out of the connecting hole 7 and is fixedly provided with a button 72.

[0056] After completing the car repair, the worker slides the entire device out from under the car. By pressing the push rod 71, the positioning part 6 is pushed away from the second positioning hole 62. This then causes the mounting part 3 to deflect into the mounting groove 21, ensuring that the mounting part 3 is fully positioned within the mounting groove 21. Figure 6 As shown, the device is stored away, reducing space usage and effectively preventing accidental contact with the drive rod 4, which could cause the limit block 41 to disengage from the limit hole 43, thus improving the overall practicality of the device.

[0057] Reference Figure 3 and Figure 5A locking key 73 is fixedly installed on the push rod 71 along its axial direction. A locking groove 74 is formed on the inner wall of the connecting hole 7 along the axial direction of the push rod 71, and the locking key 73 is slidably connected to the locking groove 74. During the pressing of the push rod 71, the locking key 73 slides in the locking groove 74. Since the locking key 73 cannot disengage from the locking groove 74, the push rod 71 can be effectively prevented from disengaging from the connecting hole 7, thus improving the reliability of the device during use.

[0058] The implementation principle of the reclining device for automobile chassis maintenance proposed in this embodiment is as follows:

[0059] When repairing a car chassis, a jack is first used to lift the chassis. Then, the worker lies on the base plate 1 and slides under the car. If the jack used to lift the chassis malfunctions, the chassis falls. At this point, the chassis first contacts the top of the drive rod 4, which then moves the drive rod 4 downward. The bottom of the drive rod 4 enters the inclined groove 44 and abuts against the inclined surface of the groove 44. As the drive rod 4 continues to move downward, it moves the limiting block 41 away from the limiting hole 43, and finally makes the limiting block 41 completely disengage from the limiting hole 43. At this point, the base plate 1 loses the support of the limiting block 41 and falls to the ground under its own weight and the weight of the worker, overcoming the magnetic attraction. This increases the distance between the worker and the chassis, thus effectively protecting the worker and significantly reducing safety hazards during the repair process.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reclining platform device for automobile chassis maintenance, characterized in that: The system includes a base plate (1), and mounting brackets (2) are provided on both sides of the base plate (1) along its length. The top of each mounting bracket (2) is higher than the top of the base plate (1). Mounting grooves (21) are provided at both ends of each mounting bracket (2). A drive rod (4) is slidably mounted vertically within the mounting groove (21). A limiting block (41) is slidably mounted within the mounting groove (21). A spacer is provided on the side wall of the mounting bracket (2) near the base plate (1) for the limiting block (41) to pass through. A perforation (42) is provided on the side wall of the base plate (1) for inserting the limiting block (41). A slanted groove (44) is provided on the top of the limiting block (41). The slanted groove (44) is used to abut against the bottom end of the drive rod (4). The inclined surface of the slanted groove (44) is set at an acute angle toward the perforation (42). A magnetic component is fixedly provided on the side wall of the mounting bracket (2). A magnetic suction component is provided on the side wall of the base plate (1). The magnetic suction component and the magnetic component are magnetically attracted to each other.

2. The reclining device for automobile chassis maintenance according to claim 1, characterized in that: A first guide groove (45) is provided on the bottom wall of the mounting groove (21) along the length direction of the limiting block (41). A first guide block (46) is slidably arranged in the first guide groove (45). The top of the first guide block (46) is fixedly connected to the bottom of the limiting block (41). A first elastic member (47) is provided in the first guide groove (45). The first elastic member (47) acts on the first guide block (46) to make the limiting block (41) move toward the direction close to the limiting hole (43).

3. The reclining device for automobile chassis maintenance according to claim 1, characterized in that: A receiving hole (48) is provided on the side wall of the mounting groove (21) away from the through hole (42), and the receiving hole (48) is used for inserting the end of the limiting block (41) away from the through hole (42).

4. The reclining device for automobile chassis maintenance according to claim 1, characterized in that: A mounting part (3) is rotatably provided in the mounting groove (21). A through mounting hole (33) is provided in the mounting part (3) along the length direction of the mounting part (3). The drive rod (4) slides through the mounting hole (33) along the length direction of the mounting part (3). A rotating shaft (31) is fixedly provided on the side wall of one end of the mounting part (3). A rotating hole (32) for the rotating shaft (31) to rotate is provided on the inner wall of the mounting groove (21). A second elastic member (52) is provided on the mounting part (3). The second elastic member (52) acts on the drive rod (4) to make the drive rod (4) move away from the rotating shaft (31). A positioning member (6) is provided on the mounting part (3). The positioning member (6) is used to limit the position of the drive rod (4) in the mounting groove (21).

5. A reclining platform device for automobile chassis maintenance according to claim 4, characterized in that: A second guide groove (5) is provided on the inner wall of the mounting hole (33) along the length direction of the mounting part (3), and a second guide block (51) is slidably arranged in the second guide groove (5). The second guide block (51) is fixedly connected to the side wall of the drive rod (4).

6. A reclining platform device for automobile chassis maintenance according to claim 4, characterized in that: The positioning element (6) is configured as a positioning pin. A first positioning hole (61) is provided on the side wall of the mounting part (3). The positioning element (6) slides through the first positioning hole (61). A second positioning hole (62) for the positioning element (6) to be inserted is provided on the side wall of the mounting groove (21). A third elastic element (63) is provided in the first positioning hole (61). The third elastic element (63) acts on the positioning element (6) to make the positioning element (6) move away from the first positioning hole (61).

7. A reclining platform device for automobile chassis maintenance according to claim 6, characterized in that: Two second positioning holes (62) are provided, and the two second positioning holes (62) are set at 90° intervals along the axis of the rotating shaft (31). An arc groove (64) is provided on the side wall of the mounting groove (21). The arc groove (64) is used for the positioning component (6) to slide and connect. The two ends of the arc groove (64) are respectively connected to the two second positioning holes (62).

8. A reclining platform device for automobile chassis maintenance according to claim 7, characterized in that: A ball (65) is embedded at the end of the positioning member (6), the ball (65) being used to roll into contact with the bottom wall of the arc groove (64).

9. A reclining platform device for automobile chassis maintenance according to claim 6, characterized in that: A connecting hole (7) is provided on the side wall of the mounting bracket (2) away from the base plate (1). The connecting hole (7) is connected to the second positioning hole (62). A top rod (71) is slidably inserted in the connecting hole (7). One end of the top rod (71) is used to abut against the end of the positioning member (6), and the other end extends out of the connecting hole (7) and is fixedly provided with a button (72).

10. A reclining platform device for automobile chassis maintenance according to claim 9, characterized in that: A key (73) is fixedly provided on the top rod (71) along the axial direction of the top rod (71), and a groove (74) is provided on the inner wall of the connecting hole (7) along the axial direction of the top rod (71). The key (73) and the groove (74) are slidably connected.

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