Auxiliary equipment for automobile maintenance

Abstract

The invention provides auxiliary equipment for vehicle maintenance, and relates to the field of lifting frames for lifting vehicles. The auxiliary equipment comprises two lifting devices which are oppositely arranged, and each lifting device comprises a lifting part, a supporting frame, a plurality of telescopic devices, a plurality of transmission wheels, a gravity center adjusting belt, a rack part and a gear part. Each transmission wheel is rotatably arranged at the upper end of one telescopic device; the gravity center adjusting belts are connected end to end and are sleeved on the plurality of transmission wheels; the two rack parts are arranged on the two sides of the multiple telescopic devices correspondingly. The two gear parts are respectively arranged on the two transmission wheels at the two ends; each gear part is coaxially and fixedly connected with the corresponding transmission wheel; and each gear part is meshed with one rack part. According to the auxiliary equipment, the gravity center of the automobile automatically moves to the stable position of the automobile through the weight difference between the two ends of the automobile, the automobile moves to the stable position of the automobile as much as possible, and then the automobile is stably lifted.

Description

Technical Field

[0001] The invention relates to a lifting frame for lifting a vehicle, in particular to an auxiliary device for automobile maintenance. Background Art

[0002] The auxiliary device for automobile maintenance in the prior art usually includes a lifting device for the automobile. The lifting device in the prior art usually includes two sets of arms arranged opposite to each other, each set of arms includes two arms, and the angle between the two arms is adjustable, so that when the automobile is being repaired, the lifting device can be adapted to various working conditions, thereby improving the maintenance efficiency of the maintenance personnel and bringing convenience to the maintenance personnel. However, when manually positioning, it is necessary to ensure that the forces on the two arms are consistent, so that one arm will not be subjected to a large force and the other arm will not be subjected to a small force, thereby preventing the automobile from tilting and ensuring that the automobile rises smoothly.

[0003] However, since the manual positioning method does not accurately grasp the center of gravity of the car and the weight distribution of the car is also different, the force on the two arms will be inconsistent, which will cause the car on the lifting device to tilt easily and cause an accident.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] Based on this, it is necessary to provide an auxiliary device for automobile maintenance in order to solve the problems existing in the auxiliary lifting device for automobile maintenance at present.

[0006] The above purpose is achieved through the following technical solutions:

[0007] An auxiliary device for automobile maintenance, comprising two lifting devices arranged opposite to each other, each of the lifting devices comprising:

[0008] Promotion Department;

[0009] A support frame, the support frame is arranged on the lifting part to be lifted up under the drive of the lifting part;

[0010] A plurality of telescopic devices are sequentially arranged on the upper side of the support frame along the length direction of the support frame; each of the telescopic devices is telescopically arranged in the up-down direction;

[0011] A plurality of transmission wheels, each of which is rotatably disposed on an upper end of one of the telescopic devices;

[0012] A center of gravity adjustment belt, which is connected end to end and is mounted on the plurality of transmission wheels;

[0013] Two rack parts are respectively arranged on both sides of the plurality of telescopic devices, and the two rack parts are arranged opposite to each other; each rack part is arranged on the upper side of the support frame in a liftable manner; a support spring is arranged between each rack part and the support frame;

[0014] Two gear parts are respectively arranged on the two transmission wheels at both ends; each gear part is coaxial with and fixedly connected to the corresponding transmission wheel; each gear part is meshed with one rack part.

[0015] Further, each of the transmission wheels is conical, and the center of gravity adjustment belt is a conical conveyor belt, so that the upper surface of the center of gravity adjustment belt is an inclined surface, and the inclined surface includes a first edge and a second edge, and the second edge is higher than the first edge;

[0016] The two first edges of the two lifting portions are located between the two second edges;

[0017] A plurality of support blocks sliding along the width direction of the slope are arranged on the upper side of each slope, and a compression spring extending along the width direction of the slope is arranged between each support block and the slope.

[0018] Further, the plurality of telescopic devices include two first telescopic devices and at least one second telescopic device, and the at least one second telescopic device is arranged between the two first telescopic devices; the first telescopic device and the second telescopic device each include a fixed portion and a telescopic portion, the telescopic portion is movably mounted on the fixed portion, and each of the transmission wheels is arranged at the upper end of one of the telescopic portions;

[0019] The transmission wheel provided on the first telescopic device is provided with the gear part;

[0020] The fixing portion of the first telescopic device is fixedly connected to the support frame;

[0021] The fixed part of the second telescopic device is rotatably connected to an articulated frame, the articulated frame is fixedly connected to the supporting frame, and a torsion spring for urging the second telescopic device to be vertical is arranged between the fixed part of the second telescopic device and the articulated frame.

[0022] Furthermore, each of the telescopic devices includes two telescopic cylinders, the cylinder bodies of the two telescopic cylinders are the fixed parts, the piston rods of the two telescopic cylinders are the telescopic parts, and the upper ends of the piston rods of the two telescopic cylinders are rotatably connected to the two ends of the corresponding transmission wheels; the telescopic cylinders are connected to an air pump.

[0023] Furthermore, the support frame includes a bottom plate, an upper plate, at least two connecting vertical plates and a sliding block; the upper plate is arranged on the upper side of the bottom plate; the connecting vertical plates are arranged between the upper plate and the bottom plate;

[0024] The gear part includes two gears, which are arranged at two ends of the corresponding transmission wheel;

[0025] The rack part includes two vertically arranged racks, a connecting column, a sliding rod and a pressing plate; the connecting column is connected to the lower end of the rack; the sliding rod is connected to the connecting column and is located at the lower end of the connecting column; a through hole is provided on the upper plate, and the sliding rod is inserted into the through hole; the pressing plate is arranged on the sliding rod; the supporting spring is sleeved on the sliding rod and is located between the pressing plate and the upper plate;

[0026] The sliding block is connected to the bottom plate, the upper plate and / or the connecting vertical plate through a connecting frame, and the sliding block is installed on the lifting part.

[0027] Furthermore, the lifting part includes a lifting bracket, a driving device and a screw; the driving device is installed on the lifting bracket, the screw is vertically arranged and rotatably installed on the lifting bracket, and the screw is connected to the driving device to rotate under the drive of the driving device; a threaded hole is provided on the sliding block, and the screw passes through the threaded hole; the sliding block is installed on the lifting bracket so as to be movable up and down.

[0028] Furthermore, the lifting bracket includes a vertical column and a base, the vertical column is connected to the upper side of the base, the vertical column is a hollow structure, the driving device is arranged at the upper end of the vertical column, and the screw is arranged in the vertical column.

[0029] Furthermore, after the car is on the center of gravity adjustment belt, the lifting part drives the support frame to move upward at least a preset number of times, and each time the lifting part drives the support frame to move upward, the height of the lowest position of the car from the ground is less than or equal to a first preset height value.

[0030] Furthermore, the preset number of times is 2 to 5 times, and the first preset height value is within 20 mm.

[0031] Further, in the initial position, the gear portion is located above the uppermost tooth of the rack portion.

[0032] The beneficial effects of the present invention are:

[0033] In an auxiliary device for automobile maintenance provided by the present invention, due to the rack part, gear part, support spring, transmission wheel and center of gravity adjustment belt, when the center of gravity of the automobile is in a stable position of the vehicle that makes the vehicle stable, the two gear parts have a tendency to move in the opposite direction under the action of the gravity of the automobile and the two rack parts, and at the same time, under the action of the center of gravity adjustment belt and the transmission wheel, the two gear parts are hindered from rotating in the opposite direction, so that the center of gravity adjustment belt, the transmission wheel, the two gear parts and the two rack parts are synchronously pressed down under the action of the gravity of the automobile, supported by the telescopic device and the support spring, so as to achieve the stability of the automobile, and then achieve the upward movement of the automobile. When the center of gravity of the automobile is in a position that deviates from the stability of the vehicle, the situation that one end is high and the other end is low will occur during the process of the automobile being lifted, that is, the end with a larger weight will compress the corresponding gear part to rotate downward along the rack part, drive the upper side of the center of gravity adjustment belt to move toward the end with a smaller weight, and then actively drive the automobile to move toward the end with a smaller weight, that is, relying on the weight difference between the two ends of the automobile itself, the center of gravity of the automobile automatically moves to the stable position of the vehicle, moves to the stable position of the vehicle as much as possible, and then the automobile is lifted stably. Therefore, during the process of lifting the car by the auxiliary equipment for car maintenance provided by the present invention, the center of gravity of the car is kept at a stable position of the car, thereby preventing accidents caused by the car tilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of an auxiliary device for automobile maintenance according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic structural diagram of an auxiliary device for automobile maintenance according to an embodiment of the present invention;

[0036] Figure 3 for Figure 2 A schematic front view of the structure of the auxiliary equipment for automobile maintenance shown;

[0037] Figure 4 for Figure 2 A magnified schematic diagram of the structure at center A;

[0038] Figure 5 For along Figure 3 Schematic diagram of the structural cross section of the middle BB surface;

[0039] Figure 6 for Figure 5 A magnified schematic diagram of the structure at center C.

[0040] in:

[0041] 100, lifting part; 111, vertical column; 112, base; 113, driving device; 114, screw; 120, support frame; 121, sliding block; 122, upper plate; 123, first telescopic device; 124, articulated frame; 125, second telescopic device; 126, supporting spring; 127, perforation; 128, connecting frame; 130, teeth; 131, transmission wheel; 132, gear part; 133, rack part; 134, sliding rod; 135, pressure plate; 136, center of gravity adjustment belt; 137, support block; 138, compression spring; 139, rack. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] Figure 1 FIG. 1 is a schematic diagram of the structure of an auxiliary device for automobile maintenance according to an embodiment of the present invention. Figure 1 As shown, and refer to Figures 2 to 6The embodiment of the present invention provides an auxiliary device for automobile maintenance, including two lifting devices arranged opposite to each other. Each lifting device includes a lifting part 100, a support frame 120, a plurality of telescopic devices, a plurality of transmission wheels 131, a center of gravity adjustment belt 136, two rack parts 133 and two gear parts 132.

[0046] The lifting part 100 is used to provide lifting power and lifting movement to raise the car to a certain height for maintenance. The support frame 120 is arranged on the lifting part 100 so that the support frame 120 can be raised under the drive of the lifting part 100. A plurality of telescopic devices are sequentially arranged on the upper side of the support frame 120 along the length direction of the support frame 120. Each telescopic device is telescopically arranged in the up and down directions. Each transmission wheel 131 is rotatably arranged on the upper end of a telescopic device. The center of gravity adjustment belt 136 is connected end to end and is sleeved on the plurality of transmission wheels 131. The center of gravity adjustment belt 136 can also be called a conveyor belt. The upper side surface of the center of gravity adjustment belt 136 is used to carry the car. Two rack parts 133 are respectively arranged on both sides of the plurality of telescopic devices, and the two rack parts 133 are arranged oppositely, that is, the teeth 130 on the two rack parts 133 are arranged oppositely, and the teeth 130 on one rack part 133 face the teeth 130 on the other rack part 133. Each rack portion 133 is arranged on the upper side of the support frame 120 so as to be liftable. A support spring 126 is arranged between each rack portion 133 and the support frame 120. Two gear portions 132 are respectively arranged on two transmission wheels 131 at the two end positions among the plurality of transmission wheels 131, that is, the transmission wheel 131 at the middle position among the plurality of transmission wheels 131 is not provided with a gear portion 132, and the two transmission wheels 131 at the two end positions are provided with a gear portion 132. Such an arrangement can make the gear portion 132 have a relatively large downward displacement, thereby making the center of gravity adjustment belt 136 have a longer rotation amount, which is conducive to the rapid movement of the vehicle to the stable position of the vehicle. The stable position of the vehicle refers to the position where the center of gravity of the vehicle is relative to the center of gravity adjustment belt 136 when the upper surface of the center of gravity adjustment belt 136 is subjected to a downward force and the force is evenly distributed after the vehicle is on the center of gravity adjustment belt 136. Under normal circumstances, the stable position of the vehicle is the middle position of the center of gravity adjustment belt 136 extending in the horizontal direction. Each gear portion 132 is coaxially and fixedly connected to the corresponding transmission wheel 131 . Each gear portion 132 is meshed with a rack portion 133 .

[0047] When the auxiliary equipment for automobile maintenance according to the embodiment of the present invention is in operation, the automobile is placed between two lifting devices, and then the support frame 120 drives the center of gravity adjustment belt 136 to extend into the lower side of the automobile, so that the center of gravity adjustment belt 136 can support the automobile after rising, and then the vehicle is lifted smoothly.

[0048] In the step of smoothly lifting the vehicle: the lifting part 100 is started for lifting. During the lifting process of the lifting part 100, if the front wheels and the rear wheels of the vehicle are not off the ground, the two gear parts 132 have a tendency to move in the opposite direction under the action of the vehicle's gravity and the two rack parts 133, and at the same time, under the action of the center of gravity adjustment belt 136 and the transmission wheel 131, the two gear parts 132 are prevented from rotating in the opposite direction, so that the center of gravity adjustment belt 136, the transmission wheel 131, the two gear parts 132 and the two rack parts 133 are synchronously pressed down under the action of the vehicle's gravity, and are supported by the telescopic device and the support spring 126, and the compression amount of the support spring 126 is consistent. When the center of gravity of the automobile deviates from the stable position of the vehicle, due to the deviation of the center of gravity of the automobile from the stable position of the vehicle, there is a gravity difference at both ends of the automobile, which will cause the tire of the lighter end of the automobile to leave the ground first, and the heavier end will drive the transmission wheel 131 and the gear part 132 of the heavier end to continue to move downward, and under the action of the corresponding rack part 133, the gear part 132 will rotate along the corresponding rack part 133, driving the center of gravity adjustment belt 136 to rotate, and the center of gravity adjustment belt 136 drives the upper side of the automobile to move toward the lighter end, so that the center of gravity of the automobile can be as close to the stable position of the vehicle as possible. Through the above steps, the lifting part 100 is lifted once or multiple times, that is, the vehicle stable lifting step is continuously performed once or multiple times. When the user observes that after a certain vehicle stable lifting step is performed, when the front wheels and the rear wheels of the automobile leave the ground at the same time, it can be considered that the center of gravity of the automobile has basically moved to the stable position of the vehicle. Then enter the maintenance lifting step, and continue to lift the lifting device to the required height for maintenance.

[0049] Therefore, in the auxiliary equipment for automobile maintenance provided by the embodiment of the present invention, since it has a rack portion 133, a gear portion 132, a support spring 126, a transmission wheel 131 and a center of gravity adjustment belt 136, when the center of gravity of the automobile is in a stable position of the vehicle, the two gear portions 132 have a tendency to move in the opposite direction under the action of the gravity of the automobile and the two rack portions 133. At the same time, under the action of the center of gravity adjustment belt 136 and the transmission wheel 131, the two gear portions 132 are prevented from rotating in the opposite direction, so that the center of gravity adjustment belt 136, the transmission wheel 131, the two gear portions 132 and the two rack portions 133 are synchronously pressed downward under the action of the gravity of the automobile, and are supported by the telescopic device and the support spring 126, so as to achieve the stability of the automobile and then realize the upward movement of the automobile. When the center of gravity of the car is at a position offset from the stable position of the vehicle, one end of the car will be higher than the other end during the lifting process, that is, the end with a larger weight will compress the corresponding gear part 132 to rotate along the corresponding rack part 133, driving the upper side of the center of gravity adjustment belt 136 to move toward the end of the car with a smaller weight, and then actively driving the car to move toward the end with a smaller weight, that is, relying on the weight difference between the two ends of the car itself, the center of gravity of the car automatically moves to the stable position of the vehicle, moves to the stable position of the vehicle as much as possible, and then the car is lifted stably. Therefore, in the process of lifting the car, the auxiliary equipment for car maintenance provided by the present invention makes the center of gravity of the car at the stable position of the vehicle, preventing accidents caused by the car tilting.

[0050] In some embodiments of the present invention, after the car is on the center of gravity adjustment belt 136, the lifting unit 100 drives the support frame 120 to move upward for at least a preset number of times, that is, the preset number of vehicle stable lifting steps are performed, and each time the lifting unit 100 drives the support frame 120 to move upward, the height of the lowest position of the car from the ground is less than or equal to the first preset height value, and / or the height of any position of the car from the respective initial position is less than or equal to the second preset height value. The preset number of times is 2 to 5 times, and the first preset height value is within 20 mm. The second preset height value is between 10 mm and 50 mm. In this embodiment, when the vehicle performs the vehicle stable lifting step, the lifting height is lower than the preset value to prevent the risk of the vehicle falling caused by the center of gravity shifting to the stable position of the vehicle, and to prevent safety accidents caused by a high lifting position.

[0051] In some embodiments of the present invention, Figure 1 , Figure 2As shown, each transmission wheel 131 is conical, and the center of gravity adjustment belt 136 is a conical conveyor belt, so that the upper surface of the center of gravity adjustment belt 136 is an inclined surface, and the inclined surface includes a first edge and a second edge, and the second edge is higher than the first edge. The two first edges of the two lifting parts 100 are located between the two second edges. A plurality of support blocks 137 sliding along the width direction of the inclined surface are arranged on the upper side of each inclined surface, and a compression spring 138 extending along the width direction of the inclined surface is arranged between each support block 137 and the inclined surface. The support block 137 is used to support the car.

[0052] In the embodiment of the present invention, by setting a conical conveyor belt and a sliding support block 137, the compression spring 138 can be squeezed during the lifting process of the car, and then the car can slide in the width direction of the car, so that the car can be kept in a horizontal state as much as possible, which helps to improve the stability of the car when it is lifted.

[0053] In some embodiments of the present invention, Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the support block 137 has a certain height, and the support block 137 is configured to prevent the car from contacting the upper end of the rack portion 133 during the rotation of the gear portion 132 relative to the corresponding rack portion 133. Because after the car contacts the upper end of the rack portion 133, even if there is a gravity difference between the two ends of the car, the gear portion 132 will not rotate downward relative to the corresponding rack portion 133. In some alternative embodiments of the present invention, a support plate is provided on the upper surface of the center of gravity adjustment belt 136, and the support plate is configured to prevent the car from contacting the upper end of the rack portion 133 during the rotation of the gear portion 132 relative to the corresponding rack portion 133.

[0054] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the plurality of telescopic devices include two first telescopic devices 123 and at least one second telescopic device 125, and the at least one second telescopic device 125 is arranged between the two first telescopic devices 123. The first telescopic device 123 and the second telescopic device 125 each include a fixed portion and a telescopic portion, and the telescopic portion is movably mounted on the fixed portion, and each transmission wheel 131 is arranged at the upper end of a telescopic portion. The transmission wheel 131 arranged on the first telescopic device 123 is provided with a gear portion 132. The fixed portion of the first telescopic device 123 is fixedly connected to the support frame 120. The fixed portion of the second telescopic device 125 is rotatably connected to the articulated frame 124, and the articulated frame 124 is fixedly connected to the support frame 120. A torsion spring is arranged between the fixed portion of the second telescopic device 125 and the articulated frame 124 to urge the second telescopic device 125 to be vertical.

[0055] In the embodiment of the present invention, the first telescopic device 123 can ensure the stability of the entire lifting device, and effectively support the car even when the center of gravity of the car is not in a stable position, thereby preventing the overall stability of the transmission wheel 131 and the center of gravity adjustment belt 136 from being poor, thereby preventing the car from being unstable and shifting when supporting the car. The second telescopic device 125 can be adaptively tilted as the car tilts to better support the car. The provision of the torsion spring can prevent the second telescopic device 125 from being unable to return to its original position after tilting or returning to its original position in time, thereby preventing the instability of the car support.

[0056] In other embodiments of the present invention, a stop block is provided on the lower side of the teeth on the rack portion 133 to prevent the gear portion 132 from disengaging from the teeth 130 on the corresponding rack portion 133, that is, the stop block prevents the gear portion 132 from continuing to rotate relative to the corresponding rack portion 133.

[0057] In some other embodiments of the present invention, the height of the support block 137 can be set so that the support block 137 makes the vehicle contact with the upper end of the rack portion 133 after the gear portion 132 rotates downward a certain distance relative to the corresponding rack portion 133. In this way, the gear portion 132 is prevented from continuing to rotate relative to the corresponding rack portion 133.

[0058] In some embodiments of the present invention, when there is a gravity difference at both ends due to the deviation of the center of gravity of the automobile from the stable position of the vehicle, the asynchronous rotation of the two gear parts 132 causes the distance change between the two gear parts 132 to cause the center of gravity adjustment belt 136 to be stretched, and the center of gravity adjustment belt 136 allows a certain amount of stretching, and the setting of the support force provided by the telescopic device or the setting of the stop block on the rack part 133 or the height setting of the support block 137, etc., have corresponding restrictions on the rotation of the gear part 132, so that the stretching amount of the center of gravity adjustment belt 136 can be limited to a certain extent, and the stretching amount of the center of gravity adjustment belt 136 can be prevented from exceeding the preset stretching amount. Moreover, the position adjustment of the center of gravity of the automobile needs to be performed multiple times, so the center of gravity adjustment belt 136 can be designed to allow a certain amount of stretching to be relatively small, which fully meets the actual use requirements.

[0059] In some embodiments of the present invention, Figure 2 , Figure 6As shown, each telescopic device includes two telescopic cylinders, the cylinder body of the telescopic cylinder is a fixed part, the piston rod of the telescopic cylinder is a telescopic part, and the upper ends of the piston rods of the two telescopic cylinders are rotatably connected to the two ends of the corresponding transmission wheel 131. The telescopic cylinder is connected to an air pump. By setting the telescopic cylinder, the gas in the cylinder can be compressed, thereby allowing the gear part 132 to have a sufficient downward movement, that is, allowing the gear part 132 to rotate relative to the corresponding rack part 133, and driving the center of gravity adjustment belt 136 and the car on the center of gravity adjustment belt 136 to shift the center of gravity. Furthermore, the inflation amount in the telescopic cylinder can be adjusted to adapt to cars of different weights.

[0060] In some embodiments of the present invention, Figure 1 , Figure 2 As shown, the support frame 120 includes a bottom plate, an upper plate 122, at least two connecting vertical plates and a sliding block 121. The upper plate 122 is arranged on the upper side of the bottom plate. The connecting vertical plate is arranged between the upper plate 122 and the bottom plate. The sliding block 121 is connected to the bottom plate, the upper plate 122 and / or the connecting vertical plate through a connecting frame 128, and the sliding block 121 is slidably mounted on the lifting part 100. In other words, the sliding block 121 is arranged on the connecting frame 128 and is also slidably mounted on the lifting part 100; the connecting frame 128 can be connected to the bottom plate, or the connecting frame 128 can be connected to the upper plate 122, or the connecting frame 128 can be connected to the connecting vertical plate, or the connecting frame 128 is connected to the bottom plate and the upper plate 122 at the same time, or the connecting frame 128 is connected to the bottom plate, the upper plate 122 and the connecting vertical plate at the same time. Further, the connecting frame 128 includes a horizontal telescopic device, which is used to move the bottom plate and the upper plate 122 to the lower side of the car.

[0061] like Figures 4 to 6 As shown, the gear portion 132 includes two gears, which are arranged at both ends of the corresponding transmission wheel 131. The rack portion 133 includes two vertically arranged racks 139, a connecting column, a sliding rod 134 and a pressing plate 135. The connecting column connects the lower end of the rack 139. The sliding rod 134 is connected to the connecting column and is located at the lower end of the connecting column. A through hole 127 is provided on the upper plate 122, and the sliding rod 134 is inserted into the through hole 127. The pressing plate 135 is arranged on the sliding rod 134. The support spring 126 is sleeved on the sliding rod 134 and is located between the pressing plate 135 and the upper plate 122.

[0062] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the lifting part 100 includes a lifting bracket, a driving device 113 and a screw 114. The driving device 113 is installed on the lifting bracket, the screw 114 is vertically arranged and rotatably installed on the lifting bracket, and the screw 114 is connected to the driving device 113 to rotate under the drive of the driving device 113. A threaded hole is provided on the sliding block 121, and the screw 114 passes through the threaded hole. The sliding block 121 is installed on the lifting bracket so as to be movable up and down. Further, the lifting bracket includes a vertical column 111 and a base 112, the vertical column 111 is connected to the upper side of the base 112, the vertical column 111 is a hollow structure, the driving device 113 is arranged at the upper end of the vertical column 111, and the screw 114 is arranged in the vertical column 111.

[0063] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An auxiliary device for automobile maintenance, characterized in that: It comprises two lifting devices arranged opposite to each other, each of the lifting devices comprising: A lifting part (100); A support frame (120), wherein the support frame (120) is arranged on the lifting portion (100) so that the support frame (120) is lifted up under the drive of the lifting portion (100); A plurality of telescopic devices are sequentially arranged on the upper side of the support frame (120) along the length direction of the support frame (120); each of the telescopic devices is telescopically arranged in the up-down direction; A plurality of transmission wheels (131), each of the transmission wheels (131) being rotatably disposed on an upper end of one of the telescopic devices; A center of gravity adjustment belt (136), the center of gravity adjustment belt (136) is connected end to end and is sleeved on the plurality of transmission wheels (131); Two rack parts (133) are respectively arranged on both sides of the plurality of telescopic devices, and the two rack parts (133) are arranged opposite to each other; each rack part (133) is arranged on the upper side of the support frame (120) in a manner that it can be raised or lowered; a support spring (126) is arranged between each rack part (133) and the support frame (120); Two gear parts (132) are respectively arranged on the two transmission wheels (131) at the two ends; each gear part (132) is coaxial with and fixedly connected to the corresponding transmission wheel (131); and each gear part (132) is meshed with one rack part (133).

2. The auxiliary device for automobile maintenance according to claim 1, characterized in that: Each of the transmission wheels (131) is conical, and the center of gravity adjustment belt (136) is a conical conveyor belt, so that the upper surface of the center of gravity adjustment belt (136) is an inclined surface, and the inclined surface includes a first edge and a second edge, and the second edge is higher than the first edge; The two first edges of the two lifting portions (100) are located between the two second edges; A plurality of support blocks (137) sliding along the width direction of the slope are arranged on the upper side of each slope, and a compression spring (138) extending along the width direction of the slope is arranged between each support block (137) and the slope.

3. The auxiliary device for automobile maintenance according to claim 1, characterized in that: The plurality of telescopic devices include two first telescopic devices (123) and at least one second telescopic device (125), wherein the at least one second telescopic device (125) is arranged between the two first telescopic devices (123); the first telescopic device (123) and the second telescopic device (125) each include a fixed portion and a telescopic portion, wherein the telescopic portion is movably mounted on the fixed portion, and each of the transmission wheels (131) is arranged at the upper end of one of the telescopic portions; The transmission wheel (131) disposed on the first telescopic device (123) is provided with the gear portion (132); The fixing portion of the first telescopic device (123) is fixedly connected to the support frame (120); The fixed part of the second telescopic device (125) is rotatably connected to an articulated frame (124), and the articulated frame (124) is fixedly connected to the support frame (120). A torsion spring is provided between the fixed part of the second telescopic device (125) and the articulated frame (124) to urge the second telescopic device (125) to be vertical.

4. The auxiliary device for automobile maintenance according to claim 3, characterized in that: Each of the telescopic devices comprises two telescopic cylinders, the cylinder bodies of the two telescopic cylinders are the fixed parts, the piston rods of the two telescopic cylinders are the telescopic parts, and the upper ends of the piston rods of the two telescopic cylinders are rotatably connected to the two ends of the corresponding transmission wheel (131); The telescopic cylinder is connected with an air pump.

5. The auxiliary device for automobile maintenance according to claim 1, characterized in that: The support frame (120) comprises a bottom plate, an upper plate (122), at least two connecting vertical plates and a sliding block (121); the upper plate (122) is arranged on the upper side of the bottom plate; the connecting vertical plates are arranged between the upper plate (122) and the bottom plate; The gear part (132) includes two gears, which are arranged at two ends of the corresponding transmission wheel (131); The rack portion (133) includes two vertically arranged racks (139), a connecting column, a sliding rod (134) and a pressing plate (135); the connecting column is connected to the lower end of the rack (139); the sliding rod (134) is connected to the connecting column and is located at the lower end of the connecting column; a through hole (127) is provided on the upper plate (122), and the sliding rod (134) is inserted into the through hole (127); the pressing plate (135) is arranged on the sliding rod (134); the supporting spring (126) is sleeved on the sliding rod (134) and is located between the pressing plate (135) and the upper plate (122); The sliding block (121) is connected to the bottom plate, the upper plate (122) and / or the connecting vertical plate via a connecting frame 128, and the sliding block (121) is installed on the lifting part (100).

6. The auxiliary device for automobile maintenance according to claim 5, characterized in that: The lifting part (100) comprises a lifting bracket, a driving device (113) and a screw rod (114); the driving device (113) is installed on the lifting bracket, the screw rod (114) is vertically arranged and rotatably installed on the lifting bracket, and the screw rod (114) is connected to the driving device (113) so as to rotate under the drive of the driving device (113); a threaded hole is provided on the sliding block (121), and the screw rod (114) passes through the threaded hole; the sliding block (121) is installed on the lifting bracket so as to be movable up and down.

7. The auxiliary device for automobile maintenance according to claim 6, characterized in that: The lifting bracket comprises a vertical column (111) and a base (112), wherein the vertical column (111) is connected to the upper side of the base (112), the vertical column (111) is a hollow structure, the driving device (113) is arranged at the upper end of the vertical column (111), and the screw rod (114) is arranged inside the vertical column (111).

8. The auxiliary device for automobile maintenance according to claim 1, characterized in that: After the automobile is on the center of gravity adjustment belt (136), the lifting part (100) drives the support frame (120) to move upward for at least a preset number of times, and each time the lifting part (100) drives the support frame (120) to move upward, the height of the lowest position of the automobile from the ground is less than or equal to a first preset height value, and / or the height of any position of the automobile from its respective initial position is less than or equal to a second preset height value.

9. The auxiliary device for automobile maintenance according to claim 8, characterized in that: The preset number of times is 2 to 5 times, the first preset height value is within 20 mm, and the second preset height value is between 10 mm and 50 mm.

10. The auxiliary device for automobile maintenance according to claim 1, characterized in that: In the initial position, the gear portion (132) is located above the uppermost tooth (130) of the rack portion (133).

Images