Auxiliary maintenance device for automobile chassis

Abstract

The utility model discloses an auxiliary maintenance device for an automobile chassis. The auxiliary maintenance device comprises a deck chair, a deck chair bracket, a height adjusting telescopic cylinder for adjusting the height of the deck chair bracket, an electric trundle rotating mechanism for driving the deck chair to move or fix the deck chair, a moving console and a lifting console, the deck chair support is connected below the deck chair, the height adjusting telescopic cylinder is arranged on the deck chair support, a plurality of electric trundle rotating mechanisms are arranged at the bottom of the deck chair support, the moving control table and the lifting control table are arranged on the two sides of the deck chair, and the lifting control table is electrically connected with the height adjusting telescopic cylinder; the electric trundle rotating mechanism is provided with a trundle, a servo motor for driving the trundle to convert angles and an angle sensor for monitoring angle parameters of the trundle, and the servo motor and the angle sensor are electrically connected with the mobile console. Rotation of the trundles can be accurately controlled so that the device can be kept static when fixed-point maintenance is needed, and the situation that the deck chair slides, and the operation efficiency of maintenance personnel is affected or potential safety hazards are caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile maintenance, in particular to an auxiliary automobile chassis maintenance device. Background Art

[0002] There are various common auxiliary devices for automobile chassis maintenance. Among them, common ones include jacks, vehicle lifts, automobile maintenance reclining boards, etc. Since the height distance between the automobile chassis and the ground is relatively short, it is very difficult for maintenance personnel to repair the automobile chassis without the help of external objects. With the development of the automobile maintenance industry, new devices and technologies have emerged continuously. One of the devices that has attracted much attention is the "vehicle lift". A vehicle lift is a professional automobile maintenance device that can lift the vehicle and keep it stable, providing a convenient and safe working environment for maintenance personnel. However, when maintenance personnel carry out maintenance work with the help of a vehicle lift, due to the limited space above the heads of the maintenance personnel, their basic movements do not show a standard upright body posture, but rather, to see the repair object clearly, they need to lean their heads sideways and backward, and keep their arms in a lifted or raised posture. To complete the disassembly and replacement of chassis fasteners and other parts. Due to work needs, maintenance personnel need to maintain a certain posture for a long time, which may cause muscle fatigue in relevant parts, and long-term chronic injuries can lead to muscle and bone injuries in relevant parts. The maintenance reclining board is an auxiliary device for repairing the automobile chassis. When in use, it usually needs to be placed on the ground, and then the maintenance personnel lie on it to carry out chassis maintenance. However, since the reclining board itself does not have any fixing measures, it may move accidentally during use. For example, in a lifting reclining chair for automobile maintenance disclosed in Chinese invention patent CN110153977B, the bottom of the caster seat is provided with rotatable universal casters, but the universal casters do not have a locking measure, and the reclining board is prone to accidental movement. This situation is especially likely to occur during operations that require greater force, such as removing fasteners. Once the reclining board slides or moves, it will not only affect the operation efficiency of the maintenance personnel, but also lead to safety hazards. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an auxiliary automobile chassis maintenance device that can keep a stationary state during fixed-point maintenance.

[0004] To solve the above technical problems, the technical solution of the present utility model is as follows: An auxiliary repair device for an automobile chassis, comprising a reclining chair, a reclining chair bracket, a height-adjusting telescopic cylinder for adjusting the height of the reclining chair bracket, an electric caster rotation mechanism for driving the reclining chair to move or fix the reclining chair, a mobile console and a lifting console; the reclining chair is connected to the reclining chair bracket below, the height-adjusting telescopic cylinder is arranged on the reclining chair bracket, several electric caster rotation mechanisms are arranged at the bottom of the reclining chair bracket, the mobile console and the lifting console are arranged on both sides of the reclining chair, and the lifting console is electrically connected to the height-adjusting telescopic cylinder; the electric caster rotation mechanism is provided with a caster, a servo motor for driving the caster to rotate the angle, and an angle sensor for monitoring the angle parameter of the caster, and the servo motor and the angle sensor are electrically connected to the mobile console.

[0005] Preferably, the electric caster rotation mechanism is further provided with a rotation mechanism bracket connected to the reclining chair bracket, a synchronous belt device, and two caster support frames fixed below the synchronous belt device. The caster is rotatably connected between the two caster support frames, and the servo motor drives the synchronous belt device to drive the caster to rotate around the rotation mechanism bracket.

[0006] Preferably, the synchronous belt device includes a fixed synchronous belt pulley, a driving synchronous belt pulley, a synchronous belt, a dust cover, and a support plate; the rotation mechanism bracket is coaxially connected to the fixed synchronous belt pulley on a bracket connecting shaft, the rotation mechanism bracket is fixedly connected to the fixed synchronous belt pulley, a rolling bearing is arranged between the fixed synchronous belt pulley and the bracket connecting shaft, the fixed synchronous belt pulley is connected to the driving synchronous belt pulley through the synchronous belt, the fixed synchronous belt pulley, the driving synchronous belt pulley, and the synchronous belt are installed inside a box body composed of the dust cover and the support plate, the servo motor is arranged below the support plate, and the output shaft of the servo motor is connected to the driving synchronous belt pulley.

[0007] Preferably, an electromagnetic clutch is arranged between the servo motor and the synchronous belt device.

[0008] Preferably, three electric caster rotation mechanisms are provided and are distributed in a triangle.

[0009] Preferably, the reclining chair is provided with a backrest, and two first electric telescopic cylinders are symmetrically arranged at the rear of the backrest. The first electric telescopic cylinder is electrically connected to the lifting console, one end of which is connected to the backrest, and the other end is fixed on the reclining chair bracket.

[0010] Preferably, the reclining chair is provided with a headrest, which includes a headrest bracket and a headrest pad. The headrest bracket is rotatably connected to the backrest, and the headrest pad is slidably arranged on the headrest bracket.

[0011] Preferably, the reclining chair is provided with a base, and a second electric telescopic cylinder is connected between the base and the reclining chair bracket.

[0012] Preferably, the reclining chair bracket includes an intermediate connecting member, a first connecting rod, a second connecting rod, a third connecting rod, a front large arm, a front middle arm, a front small arm, a rear support rod, a rear wheel two-force bent rod, a connecting flange, a rear wheel connecting rod, an intermediate connecting two-force rod, a rear support plate, a first telescopic cylinder connecting shaft, a second telescopic cylinder connecting shaft, a base bent rod, and a base support rod; the intermediate connecting member is U-shaped, the first connecting rod, the second connecting rod, and the third connecting rod are respectively passed through the intermediate connecting member from top to bottom, one end of each of the two base bent rods is respectively rotatably connected to both sides of the front end of the base, and the other end of each of the two base bent rods is respectively rotatably connected to the first connecting rod; one end of each of the two front middle arms is respectively fixedly connected to both ends of the first connecting rod and is passed through by the second connecting rod and the third connecting rod, the other end of each of the two front middle arms is respectively fixedly connected to one end of each of the two front small arms, and the other end of each of the two front small arms is fixedly connected to the rotating mechanism bracket; one end of each of the two front large arms is respectively fixedly connected to both ends of the third connecting rod and is also respectively fixedly connected to both ends of the second connecting rod, and the other end of each of the two front large arms is respectively rotatably connected to the fixed ends of the two first electric telescopic cylinders; one end of each of the two base support rods is respectively hinged to both sides of the middle and rear part of the base, and the base support rod is rotatably connected to the front large arm; one end of each of the two rear support rods is symmetrically and respectively rotatably connected to the intermediate connecting member, the other end of each of the two rear support rods is respectively rotatably connected to one end of each of the two rear wheel two-force bent rods, the other end of each of the two rear wheel two-force bent rods is respectively rotatably connected to one end of each of the two connecting flanges, and the other end of each of the two connecting flanges is respectively rotatably connected to the rear wheel connecting rod; both ends of the rear wheel connecting rod are respectively connected to an electric caster rotating mechanism; a pair of intermediate connecting two-force rods are symmetrically and rotatably connected to the first connecting rod, the pair of intermediate connecting two-force rods are disposed inside the two rear support rods and are rotatably connected to one end of the rear support plate, and the other end of the rear support plate is sleeved on the rear wheel connecting rod; the rear support plate is provided with the first telescopic cylinder connecting shaft at one end close to the intermediate connecting two-force rod, the rear support plate is provided with the second telescopic cylinder connecting shaft at the other end, the telescopic end of the height-adjusting telescopic cylinder is sleeved on the first telescopic cylinder connecting shaft, and the fixed end of the height-adjusting telescopic cylinder is sleeved on the second telescopic cylinder connecting shaft.

[0013] Preferably, the reclining chair bracket is further provided with a footrest mechanism, and the footrest mechanism includes a foot stepping connecting rod, a foot stepping support rod, and a foot stepping plate; one end of each of the two foot stepping connecting rods is respectively rotatably connected to the base bent rod, the other end of each of the two foot stepping connecting rods is respectively rotatably connected to one end of each of the two foot stepping support rods, the other end of each of the two foot stepping support rods is respectively rotatably connected to the two front middle arms, and the two foot stepping plates are respectively vertically fixedly connected to the outer sides of the two foot stepping support rods.

[0014] After adopting the above scheme, the utility model has at least the following beneficial effects:

[0015] 1. The utility model adopts an electric caster rotating mechanism with an angle sensor, which can electrically control the caster steering through a servo motor. The mobile console can accurately control the rotation angle required for each caster according to the number and angle parameters of the casters, so that the auxiliary maintenance device remains stationary when fixed-point maintenance is required, avoiding the sliding of the reclining chair during maintenance, affecting the operation efficiency of maintenance personnel or causing potential safety hazards.

[0016] 2. The electric caster rotating mechanism of the utility model is provided with an electromagnetic clutch, which can turn on or off the electric control steering function of the caster.

[0017] 3. The headrest of the utility model can not only adjust the front and rear tilt angles, making the maintenance personnel more comfortable during work, reducing the fatigue of the neck and shoulders, and improving the maintenance efficiency and quality; but also adjust the distance from the backrest up and down to adapt to the heights of different maintenance personnel.

[0018] 4. The height-adjustable telescopic cylinder provided by the utility model can adjust the height of the reclining chair, and the first telescopic cylinder connecting shaft and the second electric telescopic cylinder can adjust the tilt angle of the reclining chair. Whether it is maintenance work on the roof or under the vehicle, it can be adjusted to a suitable height and tilt state, reducing the fatigue of maintenance personnel.

[0019] 5. The reclining chair bracket of the utility model is also provided with a footrest mechanism. The footrest mechanism will fold up when the reclining chair is in a flat state, facilitating maintenance personnel to work under the vehicle; and it will automatically unfold when the base is raised and the reclining chair is in a backrest seat state, allowing maintenance personnel to place their feet on the footrest board, facilitating maintenance personnel to observe the situation on the roof. Description of the Drawings

[0020] Figure 1 is the three-dimensional structure diagram of the utility model;

[0021] Figure 2 is the side view structure diagram of the utility model;

[0022] Figure 3 is the rear view structure diagram of the utility model;

[0023] Figure 4 is the top view structure diagram of the utility model with half of the reclining chair and the dust cover removed;

[0024] Figure 5 is the bottom view structure diagram of the utility model with half of the reclining chair removed;

[0025] Figure 6 is the partial structure diagram of the reclining chair bracket of the utility model.

[0026] In the figure: 1 - reclining chair, 11 - base, 12 - backrest, 121 - bearing seat, 122 - first limiting groove, 13 - headrest, 131 - headrest bracket, 132 - headrest cushion, 133 - first thimble, 134 - chute, 135 - connecting rod, 136 - second thimble, 137 - second limiting groove, 138 - compression spring, 14 - first electric telescopic cylinder, 2 - reclining chair bracket, 201 - intermediate connecting piece, 202 - first connecting rod, 203 - second connecting rod, 204 - third connecting rod, 205 - front large arm, 206 - front middle arm, 207 - front small arm, 208 - rear support rod, 209 - rear wheel two-force bent rod, 210 - connecting flange, 211 - rear wheel connecting rod, 212 - intermediate connecting two-force rod, 213 - rear support plate, 214 - first telescopic cylinder connecting shaft, 215 - second telescopic cylinder connecting shaft, 216 - base bent rod, 217 - base support rod, 218 - foot pedal connecting rod, 219 - foot pedal support rod, 220 - foot pedal, 221 - connecting seat, 222 - third telescopic cylinder connecting shaft, 3 - height adjustment telescopic cylinder, 4 - electric caster rotation mechanism, 41 - rotation mechanism bracket, 42 - synchronous belt device, 421 - fixed synchronous belt pulley, 422 - driving synchronous belt pulley, 423 - synchronous belt, 424 - dust cover, 425 - support plate, 43 - electromagnetic clutch, 44 - servo motor, 45 - caster support frame, 46 - caster, 47 - bracket connecting shaft, 48 - rolling bearing; 5 - mobile console, 6 - lifting console, 7 - second electric telescopic cylinder, 8 - universal wheel, 9 - battery box. Detailed implementation manners

[0027] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The present utility model discloses an auxiliary repair device for an automobile chassis. As Figure 1-6 shown, it is a preferred embodiment of the present utility model, including a reclining chair 1, a reclining chair bracket 2, a height adjustment telescopic cylinder 3 for adjusting the height of the reclining chair bracket 2, an electric caster rotation mechanism 4 for driving the reclining chair to move or fix the reclining chair, a mobile console 5 and a lifting console 6. The reclining chair 1 is connected to the reclining chair bracket 2 below, the height adjustment telescopic cylinder 3 is arranged on the reclining chair bracket 2, several electric caster rotation mechanisms 4 are arranged at the bottom of the reclining chair bracket 2, the mobile console 5 and the lifting console 6 are arranged on both sides of the reclining chair 1, the mobile console 5 is electrically connected to the electric caster rotation mechanism 4, and the lifting console 6 is electrically connected to the height adjustment telescopic cylinder 3.

[0029] The electric caster rotating mechanism 4 may include a rotating mechanism bracket 41 connected to the reclining chair bracket 2, a synchronous belt device 42, a servo motor 44, a caster support bracket 45 fixedly connected below the synchronous belt device 42, and a caster 46 rotatably connected to the caster support bracket 45. The servo motor 44 drives the synchronous belt device 42 to drive the caster 46 to rotate around the rotating mechanism bracket 41, thereby realizing the direction control of the caster 46. Specifically, the synchronous belt device 42 may include a fixed synchronous pulley 421, a driving synchronous pulley 422, a synchronous belt 423, a dust cover 424, and a support plate 425. The rotating mechanism bracket 41 and the fixed synchronous pulley 421 are coaxially connected to a bracket connecting shaft 47, and are fixedly connected by set screws between the rotating mechanism bracket 41 and the fixed synchronous pulley 421. A rolling bearing 48 may be provided between the fixed synchronous pulley 421 and the bracket connecting shaft 47. The fixed synchronous pulley 421 is connected to the driving synchronous pulley 422 through the synchronous belt 423. The fixed synchronous pulley 421, the driving synchronous pulley 422, and the synchronous belt 423 are installed inside a box body formed by the dust cover 424 and the support plate 425. The servo motor 44 may be arranged below the support plate 425, and the output shaft of the servo motor 44 is connected to the driving synchronous pulley 422. When the servo motor 44 starts to drive the driving synchronous pulley 422 to move, the driving synchronous pulley 422 together with the dust cover 424 and the support plate 425 can make a circumferential movement around the fixed synchronous pulley 421, that is, rotate around the rotating mechanism bracket 41, so that the servo motor 44 indirectly drives the caster 46 to change the angle. There are two caster support brackets 45. The upper ends of the two caster support brackets 45 are respectively fixedly connected to the support plate 425, and the caster 46 is connected by a rotating shaft between the two lower ends. When the support plate 425 rotates around the rotating mechanism bracket 41, it also drives the caster 46 to rotate around the rotating mechanism bracket 41, realizing the function of electrically controlling the steering of the caster 46. The electric caster rotating mechanism 4 improves the moving flexibility of the auxiliary maintenance device, enabling the auxiliary maintenance device to change its direction at any time during operation, which can help maintenance personnel adjust their working positions more conveniently. Especially when sitting on the reclining chair 1 and observing the situation of the vehicle roof, the auxiliary maintenance device can be moved to the required position at will, and at the same time, the maintenance point can be positioned more accurately, improving the working accuracy.

[0030] Furthermore, the electric caster wheel rotating mechanism 4 may also be provided with an angle sensor (not shown in the figure) for monitoring the angle parameter of the caster wheel 46. In this embodiment, the angle sensor is a rotary encoder, which is axially connected to the driving synchronous pulley 422. No matter how the caster wheel 46 rotates, the caster wheel 46 will drive the driving synchronous pulley 422 to rotate. Therefore, the driving synchronous pulley 422 can transmit the angle parameter signal of the caster wheel 46 to the rotary encoder, so as to obtain the rotation angle and direction of the caster wheel 46. The angle sensor is electrically connected to the mobile control console 5. The mobile control console 5 can accurately control the required angle for each caster wheel 46 to rotate according to the number and angle parameters of the caster wheels 46, so that the auxiliary maintenance device remains stationary during fixed-point maintenance, avoiding the sliding of the recliner 1 during maintenance, which may affect the operation efficiency of the maintenance personnel or cause potential safety hazards. In this embodiment, there are three electric caster wheel rotating mechanisms 4, that is, three caster wheels 46, including one front caster wheel and two rear caster wheels. As Figure 4 and Figure 5 shown, they are distributed in a triangle. When braking is required, the mobile control console sends an instruction to the servo motor 44, and the servo motor 44 controls the front caster wheel to remain horizontally forward, that is, to rotate 0 degree. One of the rear caster wheels rotates 45 degrees clockwise, and the other rear caster wheel rotates 45 degrees counterclockwise, then the auxiliary maintenance device is in a locked state and cannot move.

[0031] Furthermore, an electromagnetic clutch 43 may be provided between the servo motor 44 and the driving synchronous pulley 422, which can turn on or off the electric control steering function of the caster wheel 46. When electric control steering is required, the output of the servo motor 44 is transmitted to the driving synchronous pulley 422 by connecting the electromagnetic clutch 43, so as to achieve steering control; when electric control steering is not required, the output of the servo motor 44 can be cut off by releasing the electromagnetic clutch 43, so as to avoid affecting the free rotation requirement of the caster wheel 46 during normal use.

[0032] Furthermore, the shape of the rotating mechanism bracket 41 can be designed in different shapes according to needs. For example, in this embodiment, one rotating mechanism bracket 41 arranged in front of the recliner 1 is Z-shaped, with the caster wheel 46 provided at the front end of the Z-shape, and a universal wheel 8 may also be provided at the rear end thereof to further maintain the balance of the auxiliary maintenance device; the two rotating mechanism brackets 41 arranged behind the recliner 1 are C-shaped.

[0033] The reclining chair 1 may include a base 11, a backrest 12, and a headrest 13. The base 11 is rotatably connected to the backrest 12. Two first electric telescopic cylinders 14 may be symmetrically provided at the rear of the backrest 12. The first electric telescopic cylinder 14 is electrically connected to the lifting control console 6. One end thereof is connected to the backrest 12, and the other end is fixed to the reclining chair bracket 2. The first electric telescopic cylinder 14 can adjust the angle of the backrest 12 to make the backrest 12 tilt forward or backward. When tilted forward, it is in the state of a backrest seat, suitable for repairing the vehicle body and roof. When tilted backward, it is in a lying flat state, suitable for repairing the vehicle bottom. The headrest 13 may include a headrest bracket 131 and a headrest cushion 132. The headrest bracket 131 is rotatably connected to the backrest 12, so that the headrest cushion 132 can adjust the front-back tilt angle, which can make the maintenance personnel more comfortable during work, reduce the fatigue degree of the neck and shoulders, and improve the maintenance efficiency and quality. The headrest cushion 132 is slidably arranged on the headrest bracket 131, so that the headrest cushion 132 can adjust the distance from the backrest 12 up and down to adapt to the heights of different maintenance personnel. In this embodiment, the headrest 13 adopts a simple and easy-to-use mechanical adjustment method. Specifically, a bearing seat 121 is provided on the backrest 12. The headrest bracket 131 is rotatably connected to the bearing seat 121 by a shaft. A first ejector pin 133 is provided inside the end of the headrest bracket 131. A compression spring 138 is provided at the tail of the first ejector pin 133. A plurality of first limiting grooves 122 adapted to the first ejector pin 133 are provided along the circumferential direction of rotation of the bearing seat 121. When rotating, the first ejector pin 133 slides into the corresponding first limiting groove 122 under the action of the compression spring 138 to form a clamping position. The headrest cushion 132 has a connecting rod 135 with a sliding groove 134. The headrest bracket 131 is slidably connected to the sliding groove 134 by a shaft. A second ejector pin 136 is provided inside the end of the headrest bracket 131. A compression spring 138 is provided at the tail of the second ejector pin 136. A plurality of second limiting grooves 137 adapted to the second ejector pin 136 are provided along the outer long side straight direction of the connecting rod 135. When sliding, the second ejector pin 136 slides into the corresponding second limiting groove 137 under the action of the compression spring 138 to form a clamping position.

[0034] The reclining chair support 2 may include an intermediate connecting member 201, a first connecting rod 202, a second connecting rod 203, a third connecting rod 204, a front large arm 205, a front middle arm 206, a front small arm 207, a rear support rod 208, a rear wheel two-force bent rod 209, a connecting flange 210, a rear wheel connecting rod 211, an intermediate connecting two-force rod 212, a rear support plate 213, a first telescopic cylinder connecting shaft 214, a second telescopic cylinder connecting shaft 215, a base bent rod 216, and a base support rod 217. The intermediate connecting member 201 may be U-shaped, and the first connecting rod 202, the second connecting rod 203, and the third connecting rod 204 are respectively passed through the intermediate connecting member 201 from top to bottom. One end of each of the two base bent rods 216 is respectively rotatably connected to both sides of the front end of the base 11, and the other end of each of the two base bent rods 216 is respectively rotatably connected to the first connecting rod 202. One end of each of the two front middle arms 206 is respectively fixedly connected to both ends of the first connecting rod 202 and is passed through by the second connecting rod 203 and the third connecting rod 204. The other end of each of the two front middle arms 206 is respectively fixedly connected to one end of each of the two front small arms 207, and the other end of each of the two front small arms 207 is fixedly connected to the rotary mechanism support 41. One end of each of the two front large arms 205 is respectively fixedly connected to both ends of the third connecting rod 204 and is also respectively fixedly connected to both ends of the second connecting rod 203. The other end of each of the two front large arms 205 is respectively rotatably connected to the fixed ends of the two first electric telescopic cylinders 14. One end of each of the two base support rods 217 is respectively hinged to both sides of the middle and rear part of the base 11, and the base support rod 217 is rotatably connected to the front large arm 205. One end of each of the two rear support rods 208 is symmetrically and respectively rotatably connected to the intermediate connecting member 201, and the other end is respectively rotatably connected to one end of each of the two rear wheel two-force bent rods 209. The other end of each of the two rear wheel two-force bent rods 209 is respectively rotatably connected to one end of each of the two connecting flanges 210. The other end of each of the two connecting flanges 210 is respectively rotatably connected to the rear wheel connecting rod 211. An electric caster rotary mechanism 4 is respectively connected to both ends of the rear wheel connecting rod 211. A pair of intermediate connecting two-force rods 212 are symmetrically and rotatably connected to the first connecting rod 202. This pair of intermediate connecting two-force rods 212 are disposed inside the two rear support rods 208 and are rotatably connected to one end of the rear support plate 213. The other end of the rear support plate 213 is sleeved on the rear wheel connecting rod 217. The first telescopic cylinder connecting shaft 214 is provided at one end of the rear support plate 213 close to the intermediate connecting two-force rod 212, and the second telescopic cylinder connecting shaft 215 is provided at the other end of the rear support plate 213. The telescopic end of the height adjustment telescopic cylinder 3 is sleeved on the first telescopic cylinder connecting shaft 214, and the fixed end of the height adjustment telescopic cylinder 3 is sleeved on the second telescopic cylinder connecting shaft 215. A battery box 9 may be installed between the two front middle arms 206 for supplying power to the device.When the height-adjusting telescopic cylinder 3 extends, it drives the reclining chair bracket 2 to fold into an inverted V shape, and the reclining chair 1 rises; when the height-adjusting telescopic cylinder 3 contracts, it drives the reclining chair bracket 2 to unfold into a straight line, and the reclining chair 1 descends.

[0035] The reclining chair bracket 2 may further be provided with a footrest mechanism, which may include a foot pedal connecting rod 218, a foot pedal support rod 219, and a foot pedal 220. One end of each of the two foot pedal connecting rods 218 is rotatably connected to the base bent rod 216, the other end of each of the two foot pedal connecting rods 218 is rotatably connected to one end of each of the two foot pedal support rods 219, the other end of each of the two foot pedal support rods 219 is rotatably connected to each of the two front middle arms 206, and the two foot pedals 220 are respectively vertically fixed to the outer sides of the two foot pedal support rods 219. The footrest mechanism will fold up when the reclining chair bracket 2 unfolds and the base 11 descends, as Figure 2 shown, and will automatically unfold when the reclining chair bracket 2 folds and the base 11 rises, as Figure 1 shown. Maintenance personnel can place their feet on the foot pedals 220, which is convenient for maintenance personnel to observe the situation of the vehicle roof.

[0036] A second electric telescopic cylinder 7 may also be provided between the base 11 and the front middle arm 206. The second electric telescopic cylinder 7 and the height-adjusting telescopic cylinder 3 are both electrically connected to the lifting control console 6, and the two can be linked to ensure that the base 11 is always in a horizontal state during the lifting process. Specifically, a connecting seat 221 is provided below the base 11, and a third telescopic cylinder connecting shaft 222 is provided between the two foot pedal support rods 219. The telescopic end of the second electric telescopic cylinder 7 is rotatably connected to the connecting seat 221, and the fixed end of the second electric telescopic cylinder 7 is sleeved on the third telescopic cylinder connecting shaft 222.

[0037] When the auxiliary maintenance device of the utility model is used for automobile chassis maintenance operations, the maintenance personnel can lie on the reclining chair 1 and send a lowering command through the lifting control console 6. The height-adjusting telescopic cylinder 3 contracts to drive the reclining chair 1 to lower to a space where it can enter and exit under the automobile chassis. At the same time, the second electric telescopic cylinder 7 will be linked with the height-adjusting telescopic cylinder 3 to keep the base 11 in a horizontal state during the lowering process. The first electric telescopic cylinder 14 is controlled to adjust the backrest 12 to tilt backward to a lying flat state. When the reclining chair 1 moves to the designated position, the casters 46 of each electric caster rotation mechanism 4 are controlled by the movement control console 5 to rotate corresponding angles respectively, so that the auxiliary maintenance device is in a locked state, avoiding the sliding of the reclining chair 1 during maintenance, which affects the operation efficiency of the maintenance personnel or causes potential safety hazards. The auxiliary maintenance device can also be used for daily roof maintenance. By sending a raising command through the lifting control console 6, the height-adjusting telescopic cylinder 3 extends to drive the reclining chair 1 to rise. At the same time, the footrest mechanism is unfolded for the maintenance personnel to step on. The first electric telescopic cylinder 14 adjusts the backrest 12 to tilt forward to a backrest seat state. When the reclining chair 1 moves to the designated position, the same control is made for each electric caster rotation mechanism 4 to work for locking.

[0038] The above is only a preferred embodiment of the utility model, and does not impose any limitation on the technical scope of the utility model. Therefore, any changes or modifications made according to the claims and the description of the utility model shall fall within the scope covered by the utility model patent.

Claims

1. An auxiliary repair device for an automobile chassis, characterized in that: It includes a reclining chair, a reclining chair bracket, a height-adjusting telescopic cylinder for adjusting the height of the reclining chair bracket, an electric caster rotation mechanism for driving the movement or fixing of the reclining chair, a mobile console, and a lifting console; the reclining chair is connected to the reclining chair bracket below, the height-adjusting telescopic cylinder is arranged on the reclining chair bracket, several electric caster rotation mechanisms are arranged at the bottom of the reclining chair bracket, the mobile console and the lifting console are arranged on both sides of the reclining chair, and the lifting console is electrically connected to the height-adjusting telescopic cylinder; the electric caster rotation mechanism is provided with a caster, a servo motor for driving the caster to rotate the angle, and an angle sensor for monitoring the angle parameter of the caster, and the servo motor and the angle sensor are electrically connected to the mobile console.

2. An auxiliary vehicle chassis repair device according to claim 1, characterized in that: The electric caster rotation mechanism is further provided with a rotation mechanism bracket connected to the reclining chair bracket, a synchronous belt device, and two caster support frames fixed below the synchronous belt device. The caster is rotatably connected between the two caster support frames, and the servo motor drives the synchronous belt device to drive the caster to rotate around the rotation mechanism bracket.

3. An auxiliary vehicle chassis repair device according to claim 2, characterized in that: The synchronous belt device includes a fixed synchronous belt pulley, a driving synchronous belt pulley, a synchronous belt, a dust cover, and a support plate; the rotation mechanism bracket is coaxially connected to the fixed synchronous belt pulley on a bracket connecting shaft, the rotation mechanism bracket is fixedly connected to the fixed synchronous belt pulley, a rolling bearing is arranged between the fixed synchronous belt pulley and the bracket connecting shaft, the fixed synchronous belt pulley is connected to the driving synchronous belt pulley through the synchronous belt, the fixed synchronous belt pulley, the driving synchronous belt pulley, and the synchronous belt are installed inside a box body composed of the dust cover and the support plate, the servo motor is arranged below the support plate, and the output shaft of the servo motor is connected to the driving synchronous belt pulley.

4. An auxiliary vehicle chassis repair device according to claim 1, characterized in that: An electromagnetic clutch is arranged between the servo motor and the synchronous belt device.

5. An auxiliary vehicle chassis repair device according to claim 1, characterized in that: There are three electric caster rotation mechanisms, which are distributed in a triangle.

6. The auxiliary vehicle chassis repair device according to claim 2, wherein: The reclining chair is provided with a backrest, and two first electric telescopic cylinders are symmetrically arranged at the rear of the backrest. The first electric telescopic cylinder is electrically connected to the lifting console, one end of which is connected to the backrest and the other end is fixed on the reclining chair bracket.

7. An auxiliary vehicle chassis repair device according to claim 1, characterized in that: The reclining chair is provided with a headrest, which includes a headrest bracket and a headrest pad. The headrest bracket is rotatably connected to the backrest, and the headrest pad is slidably arranged on the headrest bracket.

8. An auxiliary vehicle chassis repair device according to claim 1, characterized in that: The reclining chair is provided with a base, and a second electric telescopic cylinder is connected between the base and the reclining chair bracket.

9. An auxiliary vehicle chassis repair device according to claim 6, characterized in that: The reclining chair bracket includes an intermediate connector, a first connecting rod, a second connecting rod, a third connecting rod, a front large arm, a front middle arm, a front small arm, a rear support rod, a rear wheel two-force bent rod, a connecting flange, a rear wheel connecting rod, an intermediate connecting two-force rod, a rear support plate, a first telescopic cylinder connecting shaft, a second telescopic cylinder connecting shaft, a base bent rod, and a base support rod; the intermediate connector is U-shaped, the first connecting rod, the second connecting rod, and the third connecting rod are respectively passed through the intermediate connector from top to bottom, one end of each of the two base bent rods is respectively rotatably connected to both sides of the front end of the base, and the other end of each of the two base bent rods is respectively rotatably connected to the first connecting rod; one end of each of the two front middle arms is respectively fixedly connected to both ends of the first connecting rod and is passed through by the second connecting rod and the third connecting rod, the other end of each of the two front middle arms is respectively fixedly connected to one end of each of the two front small arms, and the other end of each of the two front small arms is fixedly connected to the rotation mechanism bracket; one end of each of the two front large arms is respectively fixedly connected to both ends of the third connecting rod and is also respectively fixedly connected to both ends of the second connecting rod, and the other end of each of the two front large arms is respectively rotatably connected to the fixed ends of the two first electric telescopic cylinders; one end of each of the two base support rods is respectively hinged to both sides of the middle and rear part of the base, and the base support rod is rotatably connected to the front large arm; one end of each of the two rear support rods is symmetrically and respectively rotatably connected to the intermediate connector, the other end of each of the two rear support rods is respectively rotatably connected to one end of each of the two rear wheel two-force bent rods, the other end of each of the two rear wheel two-force bent rods is respectively rotatably connected to one end of each of the two connecting flanges, and the other end of each of the two connecting flanges is respectively rotatably connected to the rear wheel connecting rod; both ends of the rear wheel connecting rod are respectively connected to an electric caster rotation mechanism; a pair of intermediate connecting two-force rods are symmetrically and rotatably connected to the first connecting rod, the pair of intermediate connecting two-force rods are disposed inside the two rear support rods and are rotatably connected to one end of the rear support plate, and the other end of the rear support plate is sleeved on the rear wheel connecting rod; the first telescopic cylinder connecting shaft is provided at one end of the rear support plate close to the intermediate connecting two-force rod, the second telescopic cylinder connecting shaft is provided at the other end of the rear support plate, the telescopic end of the height adjustment telescopic cylinder is sleeved on the first telescopic cylinder connecting shaft, and the fixed end of the height adjustment telescopic cylinder is sleeved on the second telescopic cylinder connecting shaft.

10. An auxiliary vehicle chassis repair device according to claim 9, characterized in that: The reclining chair bracket is further provided with a footrest mechanism, and the footrest mechanism includes a foot pedal connecting rod, a foot pedal support rod, and a foot pedal; one end of each of the two foot pedal connecting rods is respectively rotatably connected to the base bent rod, the other end of each of the two foot pedal connecting rods is respectively rotatably connected to one end of each of the two foot pedal support rods, the other end of each of the two foot pedal support rods is respectively rotatably connected to the two front middle arms, and the two foot pedals are respectively vertically fixedly connected to the outer sides of the two foot pedal support rods.

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