An electric vehicle gearbox lifting device and its usage method

Abstract

An electric vehicle gearbox hoisting device includes a crossbeam, a drum, a hoisting shaft, a steel wire rope, and a hook. The head end of the steel wire rope is provided with a hook, and the steel wire rope is wound around the drum. The crossbeam is sequentially provided with a first positioning slot, a bearing seat group, a second positioning slot, and a motor from left to right. The first positioning slot is fixedly connected to the crossbeam. The hoisting shaft is sleeved in the bearing seat group, and the drum is sleeved on the hoisting shaft. The right end of the hoisting shaft is connected to the output end of the motor through a coupling. The second positioning slot is slidably connected to the crossbeam, and the right end of the second positioning slot is connected to the crossbeam through a spring. A control device is arranged at the upper end of the second positioning slot. This design realizes centering positioning by adjusting the position of the crossbeam through the first positioning slot and the second positioning slot, making the gearbox disassembly process more stable, time-saving and labor-saving, and the installation and disassembly are simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and particularly relates to a lifting device for an electric vehicle gearbox and a using method thereof. Background Art

[0002] The gearbox is one of the important components of an automobile. The gearbox is large in volume and weight, is fixed under the automobile carriage and is connected to the engine. When a failure occurs in the gearbox or the clutch, the gearbox needs to be disassembled. Due to the large weight of the gearbox and the narrow operation space at the vehicle chassis, pulling out or installing the gearbox from the rear end of the engine is a very laborious process, usually requiring the cooperation of multiple people and having poor safety.

[0003] Currently, the disassembly and assembly method of the gearbox on a flatbed transport vehicle without removing the carriage is as follows: one is that multiple people cooperate to lift or pull the gearbox manually for disassembly and installation. Due to the limited operation space and the heavy weight of the gearbox, it is time-consuming, laborious and unsafe; the other is that the repairman ties the corresponding parts of the transmission with ropes and uses a self-made winch bar to remove the transmission for repair. After the repair, the transmission is installed on the vehicle using the winch bar again. The above methods require the joint effort of multiple people, are also unsafe, time-consuming and laborious, and are extremely inconvenient to use and operate. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects and problems of the existing technology in which the disassembly of the gearbox is unsafe, time-consuming, laborious and inconvenient to operate, and to provide a safe and reliable, convenient disassembly and assembly lifting device for an electric vehicle gearbox and a using method thereof.

[0005] To achieve the above purpose, the technical solution of the present invention is:

[0006] A lifting device for an electric vehicle gearbox, comprising a cross beam, a drum, a hoisting shaft, a steel wire rope, and a hook. The head end of the steel wire rope is provided with a hook. The steel wire rope is wound around the drum. The cross beam is sequentially provided with a first positioning slot, a bearing seat group, a second positioning slot, and a motor from left to right. The first positioning slot is fixedly connected to the cross beam. The hoisting shaft is sleeved in the bearing seat group. The drum is sleeved on the hoisting shaft. The right end of the hoisting shaft is connected to the output end of the motor through a coupling. The second positioning slot is slidably connected to the cross beam. The right end of the second positioning slot is connected to the cross beam through a spring. A control device is arranged at the upper end of the second positioning slot.

[0007] The crossbeam includes two cross bars and two longitudinal bars, the two cross bars are arranged in parallel, the longitudinal bars include a supporting part and a connecting part connected to each other, the connecting part is inclined to the lower right, the left ends of the two supporting parts are respectively connected to the two ends of one cross bar, and the right ends of the two connecting parts are respectively connected to the two ends of another cross bar, the first positioning slot and the second positioning slot are both connected to the inner side wall of the supporting part, the bearing seat assembly is installed on the upper end surface of the supporting part, and the motor is installed on the upper end surface of the connecting part.

[0008] The control device includes two sliding columns, two baffles, two guide blocks and an operating handle. The two sliding columns, baffles and guide blocks are symmetrically distributed on both sides of the winch shaft. The baffle is connected to the upper end of the second positioning slot, and the guide block is connected to the upper right end of the support part. The operating handle is an inverted U-shaped structure. One end of the sliding column is connected to the baffle, and the other end passes through the guide block and is connected to the lower end of the operating handle.

[0009] The first positioning slot includes a first fixing portion, a first connecting portion, and a first bottom plate. The first fixing portion is fixedly connected to the inner side wall of the supporting portion. The first connecting portion is vertically arranged and the upper ends are connected to the first fixing portion and the lower ends of the supporting portion. The first bottom plate is connected to the lower end of the first connecting portion, and the first bottom plate is inclined to the lower left.

[0010] The first fixing portion is provided with two symmetrically distributed through grooves, the side walls of the through grooves are provided with through holes, a bearing is arranged in the through grooves, a pin is arranged in the through holes, and the pin is connected to the inner ring of the bearing.

[0011] The second positioning slot includes a second connecting portion and a second bottom plate. Grooves are provided at both ends of the second connecting portion. Both supporting portions are fitted with inner walls of the grooves. The second connecting portion is slidably connected to the supporting portion. The second bottom plate is connected to the lower end of the second connecting portion. The second bottom plate is inclined to the lower right.

[0012] The second connecting portion is provided with two symmetrically distributed through grooves, the side walls of the through grooves are provided with through holes, a bearing is arranged in the through grooves, a pin is arranged in the through holes, and the pin is connected to the inner ring of the bearing.

[0013] The bearing seat group includes three bearing seats, and the three bearing seats are respectively sleeved on the left end, the middle end and the right end of the winch shaft.

[0014] The cross section of the hoisting shaft is cross-shaped.

[0015] A method for using an electric vehicle gearbox lifting device comprises the following steps in sequence:

[0016] Step 1: First, lift the right side of the crossbeam, then align the first positioning slot with the left longitudinal beam of the vehicle carriage floor, and then make the first positioning slot clamp the left longitudinal beam. Then, use the control device to push the second positioning slot to move leftward until it is located inside the right longitudinal beam. Then, lay the right side of the crossbeam flat, and then reset the control device. The second positioning slot moves rightward and clamps the right longitudinal beam.

[0017] Step 2: First, push the crossbeam so that it is exactly above the gearbox, then push the drum so that the hook is directly above the gearbox. Then, hook the hook onto the gearbox, and then clamp the power clamp of the motor onto the vehicle battery terminal according to the positive and negative polarities. Then, operate the controller to make the motor rotate, the steel wire rope winds around the drum, and the hook pulls the gearbox upward for maintenance and replacement of the gearbox.

[0018] Step 3: First, remove the power clamp from the vehicle battery terminal, then use the control device to push the second positioning slot to move leftward so that it disengages from the right longitudinal beam. Then, lift the right side of the crossbeam, and then push the crossbeam rightward so that the first positioning slot disengages from the left longitudinal beam, completing the disassembly of the device.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In the electric vehicle gearbox hoisting device and its usage method of the present invention, by setting the first positioning slot and the second positioning slot, the crossbeam can fit well with the vehicle carriage floor. The position of the second positioning slot can be adjusted through the control device to achieve positioning. The gearbox is hooked by the hook on the drum, and then the motor drives the steel wire rope to rise to lift the gearbox, realizing automatic hoisting. Therefore, the present invention is convenient to operate, safe and reliable, labor-saving and time-saving.

[0021] 2. In the electric vehicle gearbox hoisting device and its usage method of the present invention, by setting bearings and pin shafts, the device can slide back and forth on the carriage floor, and accurate centering installation can be achieved by adjusting the state in the front-back, left-right directions, which can improve the positioning accuracy and make the gearbox disassembly process more stable and smooth. Therefore, the present invention is convenient to operate and the working process is stable.

[0022] 3. In the electric vehicle gearbox hoisting device and its usage method of the present invention, by inclining the first bottom plate and the second bottom plate, the gap between the positioning slot and the carriage floor is increased, so that there will be no rigid collision when the carriage floor enters the slot, and at the same time, it can also adapt to carriage floors of different thicknesses. Therefore, the present invention has wide applicability and high reliability. Brief Description of the Drawings

[0023] Figure 1 is the structural schematic diagram when the present invention is installed.

[0024] Figure 2 is the structural schematic diagram of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the control device and the hoisting shaft in the present invention.

[0026] Figure 4 It is a schematic structural diagram of the first positioning slot in the present invention.

[0027] Figure 5 It is a cross-sectional schematic diagram of the second positioning slot in the present invention.

[0028] In the figure: cross beam 1, drum 2, hoisting shaft 3, first positioning slot 4, first fixing part 41, first connecting part 42, first bottom plate 43, bearing seat group 5, bearing seat 51, second positioning slot 6, second connecting part 61, second bottom plate 62, control device 7, sliding column 71, baffle 72, guiding block 73, operating handle 74, motor 8, groove 9, coupling 10, vertical rod 11, supporting part 111, connecting part 112, cross bar 12, bearing 13, steel wire rope 14, hook 15, through slot 16, pin shaft 17, spring 18, left longitudinal beam 19, right longitudinal beam 20. Specific embodiments

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 5 , an electric vehicle transmission hoisting device, including a cross beam 1, a drum 2, a hoisting shaft 3, a steel wire rope 14, and a hook 15. The head end of the steel wire rope 14 is provided with a hook 15. The steel wire rope 14 is wound around the drum 2. The cross beam 1 is sequentially provided with a first positioning slot 4, a bearing seat group 5, a second positioning slot 6, and a motor 8 from left to right. The first positioning slot 4 is fixedly connected to the cross beam 1. The hoisting shaft 3 is sleeved in the bearing seat group 5. The drum 2 is sleeved on the hoisting shaft 3. The right end of the hoisting shaft 3 is connected to the output end of the motor 8 through a coupling 10. The second positioning slot 6 is slidably connected to the cross beam 1. The right end of the second positioning slot 6 is connected to the cross beam 1 through a spring 18. The control device 7 is provided at the upper end of the second positioning slot 6.

[0031] The cross beam 1 includes two cross bars 12 and two longitudinal bars 11. The two cross bars 12 are arranged in parallel. The longitudinal bar 11 includes a support part 111 and a connecting part 112 which are connected to each other. The connecting part 112 is arranged obliquely downward to the right. The left ends of the two support parts 111 are respectively connected to both ends of one cross bar 12, and the right ends of the two connecting parts 112 are respectively connected to both ends of the other cross bar 12. The first positioning slot 4 and the second positioning slot 6 are both connected to the inner side wall of the support part 111. The bearing seat group 5 is installed on the upper end surface of the support part 111, and the motor 8 is installed on the upper end surface of the connecting part 112.

[0032] The control device 7 includes two sliding columns 71, two baffle plates 72, two guiding blocks 73 and an operating handle 74. The two sliding columns 71, baffle plates 72 and guiding blocks 73 are symmetrically distributed on both sides of the hoisting shaft 3. The baffle plate 72 is connected to the upper end of the second positioning slot 6. The guiding block 73 is connected to the upper right end of the support part 111. The operating handle 74 is of an inverted U-shaped structure. One end of the sliding column 71 is connected to the baffle plate 72, and the other end passes through the guiding block 73 and is connected to the lower end of the operating handle 74.

[0033] The first positioning slot 4 includes a first fixing part 41, a first connecting part 42 and a first bottom plate 43. The first fixing part 41 is fixedly connected to the inner side wall of the support part 111. The first connecting part 42 is arranged vertically, and the upper ends are connected to the first fixing part 41 and the lower end of the support part 111. The first bottom plate 43 is connected to the lower end of the first connecting part 42, and the first bottom plate 43 is inclined downward to the left.

[0034] Two symmetrically distributed through slots 16 are formed in the first fixing part 41. Through holes are formed in the side walls of the through slots 16. Bearings 13 are arranged in the through slots 16, and pin shafts 17 are arranged in the through holes. The pin shafts 17 are connected to the inner rings of the bearings 13.

[0035] The second positioning slot 6 includes a second connecting part 61 and a second bottom plate 62. Grooves 9 are formed at both ends of the second connecting part 61. The two support parts 111 are both in contact with the inner walls of the grooves 9. The second connecting part 61 is slidably connected to the support part 111. The second bottom plate 62 is connected to the lower end of the second connecting part 61, and the second bottom plate 62 is inclined downward to the right.

[0036] Two symmetrically distributed through slots 16 are formed in the second connecting part 61. Through holes are formed in the side walls of the through slots 16. Bearings 13 are arranged in the through slots 16, and pin shafts 17 are arranged in the through holes. The pin shafts 17 are connected to the inner rings of the bearings 13.

[0037] The bearing seat group 5 includes three bearing seats 51, and the three bearing seats 51 are respectively sleeved on the left end, middle end, and right end of the hoisting shaft 3.

[0038] The cross-section of the hoisting shaft 3 is cross-shaped.

[0039] A usage method of an electric vehicle transmission hoisting device sequentially includes the following steps:

[0040] Step 1: First, lift the right side of the crossbeam 1, then align the first positioning slot 4 with the left longitudinal beam 19 of the vehicle carriage floor, then make the first positioning slot 4 catch the left longitudinal beam 19, and then push the second positioning slot 6 to move leftward through the control device 7 so that it is located inside the right longitudinal beam 20. Then, lay the right side of the crossbeam 1 flat, and then reset the control device 7. The second positioning slot 6 moves rightward and catches the right longitudinal beam 20.

[0041] Step 2: First, push the crossbeam 1 so that it is exactly above the transmission, then push the drum 2 so that the hook 15 is directly above the transmission. Then, hook the hook 15 on the transmission, and then clamp the power supply clamp of the motor 8 on the vehicle battery terminal according to the positive and negative poles. Then, operate the controller to make the motor 8 rotate, the steel wire rope 14 winds around the drum 2, and the hook 15 pulls the transmission upward, and then perform the repair and replacement of the transmission.

[0042] Step 3: First, remove the power supply clamp from the vehicle battery terminal, then push the second positioning slot 6 to move leftward through the control device 7 so that it disengages from the right longitudinal beam 20. Then, lift the right side of the crossbeam 1, and then push the crossbeam rightward so that the first positioning slot 4 disengages from the left longitudinal beam 19, completing the disassembly of the device.

[0043] The principle of the present invention is described as follows:

[0044] Obliquely insert the first positioning slot 4 into the left longitudinal beam 19 of the vehicle, then hold the operation handle 74 and push it leftward, pushing the sliding column 71 and the baffle 72 to move leftward. At the same time, the spring 18 is stretched, and the second positioning slot 6 slides leftward in the crossbeam 1 until the second positioning slot 6 is located inside the right longitudinal beam 20. At this time, lay the crossbeam 1 flat, then release the operation handle 74, and the spring 18 contracts to pull the second positioning slot 6 so that the second positioning slot 6 catches the right longitudinal beam 20. Push the crossbeam 1, and the bearing 13 rolls on the left longitudinal beam 19 and the right longitudinal beam 19. Adjust the position of the crossbeam 1, and then adjust the position of the drum 2 so that the hook 15 is directly above the transmission. Hook the hook 15 on the transmission, connect the wire of the motor 8 to the vehicle, and then control the motor 8 to rotate through the lifter, driving the hook 15 to rise. The steel wire rope 14 winds around the drum 2, and the transmission slowly rises. After completely lifting the transmission, perform the repair and replacement, and remove the hoisting device by pushing the second positioning slot 6 through the operation handle 74.

[0045] Example 1:

[0046] See Figures 1 to 5A lifting device for an electric vehicle gearbox comprises a crossbeam 1, a drum 2, a winch shaft 3, a wire rope 14, and a hook 15. The head end of the wire rope 14 is provided with a hook 15, and the wire rope 14 is wound on the drum 2. The crossbeam 1 is provided with a first positioning slot 4, a bearing seat group 5, a second positioning slot 6, and a motor 8 from left to right. The first positioning slot 4 is fixedly connected to the crossbeam 1, and the winch shaft 3 is sleeved in the bearing seat group 5. The drum 2 is sleeved on the winch shaft 3, and the right end of the winch shaft 3 is connected to the output end of the motor 8 through a coupling 10. The second positioning slot 6 is slidably connected to the crossbeam 1, and the right end of the second positioning slot 6 is connected to the crossbeam 1 through a spring 18. The upper end of the second positioning slot 6 is provided with a control device 7. The crossbeam 1 includes two cross bars 12 and two longitudinal bars 11. The two cross bars 12 are arranged in parallel. The longitudinal bar 11 includes a supporting portion 111 and a connecting portion 112 connected to each other. The connecting portion 112 is inclined to the lower right. The left ends of the two supporting portions 111 are respectively connected to the two ends of one cross bar 12, and the right ends of the two connecting portions 112 are respectively connected to the two ends of the other cross bar 12. The first positioning slot 4 and the second positioning slot 6 are both connected to the inner side wall of the supporting portion 111. The bearing seat group 5 is installed on the upper end surface of the supporting portion 111, and the motor 8 is installed on the upper end surface of the connecting portion 112. The control device 7 includes two slide posts 71, two baffles 72, two guide blocks 73 and an operating handle 74. The two slide posts 71, baffles 72 and guide blocks 73 are symmetrically distributed on both sides of the hoist shaft 3. The baffle 72 is connected to the upper end of the second positioning slot 6, and the guide block 73 is connected to the upper right end of the support portion 111. The operating handle 74 is an inverted U-shaped structure. One end of the slide post 71 is connected to the baffle 72, and the other end passes through the guide block 73 and is connected to the lower end of the operating handle 74. The first positioning slot 4 includes a first fixing portion 41, a first connecting portion 42 and a first bottom plate 43. The first fixing portion 41 is fixedly connected to the inner side wall of the support portion 111. The first connecting portion 42 is vertically arranged and the upper ends are both connected to the lower ends of the first fixing portion 41 and the support portion 111. The first bottom plate 43 is connected to the lower end of the first connecting portion 42, and the first bottom plate 43 is inclined to the lower left. The first fixing portion 41 is provided with two symmetrically distributed through slots 16 , a through hole is provided on the side wall of the through slot 16 , a bearing 13 is provided in the through slot 16 , a pin 17 is provided in the through hole, and the pin 17 is connected to the inner ring of the bearing 13 .The second positioning card slot 6 includes a second connecting portion 61 and a second bottom plate 62. Grooves 9 are formed at both ends of the second connecting portion 61. Both of the supporting portions 111 are in contact with the inner walls of the grooves 9. The second connecting portion 61 is slidably connected to the supporting portions 111. The second bottom plate 62 is connected to the lower end of the second connecting portion 61, and the second bottom plate 62 inclines rightward and downward. Two symmetrically distributed through slots 16 are formed in the second connecting portion 61. Through holes are formed in the side walls of the through slots 16. Bearings 13 are arranged in the through slots 16, and pin shafts 17 are arranged in the through holes. The pin shafts 17 are connected to the inner rings of the bearings 13.

[0047] A using method of a hoisting device for an electric vehicle gearbox sequentially includes the following steps:

[0048] Step 1: First, lift the right side of the cross beam 1, then align the first positioning card slot 4 with the left longitudinal beam 19 of the vehicle carriage bottom plate, then make the first positioning card slot 4 clamp the left longitudinal beam 19, and then push the second positioning card slot 6 to move leftward through the control device 7 so that it is located inside the right longitudinal beam 20. Then, lay the right side of the cross beam 1 flat, and then reset the control device 7. The second positioning card slot 6 moves rightward and clamps the right longitudinal beam 20.

[0049] Step 2: First, push the cross beam 1 so that it is exactly above the gearbox, then push the drum 2 so that the hook 15 is directly above the gearbox, then hook the hook 15 on the gearbox, then clamp the power supply clip of the motor 8 on the vehicle battery terminal according to the positive and negative poles, and then operate the controller to make the motor 8 rotate. The steel wire rope 14 winds around the drum 2, and the hook 15 pulls the gearbox to rise, and then perform the repair and replacement of the gearbox.

[0050] Step 3: First, remove the power supply clip from the vehicle battery terminal, then push the second positioning card slot 6 to move leftward through the control device 7 so that it disengages from the right longitudinal beam 20. Then, lift the right side of the cross beam 1, and then push the cross beam rightward so that the first positioning card slot 4 disengages from the left longitudinal beam 19 to complete the disassembly of the device.

[0051] Embodiment 2:

[0052] The difference from Embodiment 1 is:

[0053] The bearing seat group 5 includes three bearing seats 51. The three bearing seats 51 are respectively sleeved on the left end, middle end, and right end of the hoisting shaft 3, and the cross section of the hoisting shaft 3 is cross-shaped.

Claims

1. An electric vehicle transmission lifting device, comprising a cross beam (1), a drum (2), a hoisting shaft (3), a steel wire rope (14), and a hook (15). The head end of the steel wire rope (14) is provided with the hook (15), and the steel wire rope (14) is wound around the drum (2), characterized in that, The cross beam (1) is successively provided with a first positioning slot (4), a bearing seat group (5), a second positioning slot (6), and a motor (8) from left to right. The first positioning slot (4) is fixedly connected to the cross beam (1). The hoisting shaft (3) is sleeved in the bearing seat group (5). The drum (2) is sleeved on the hoisting shaft (3). The right end of the hoisting shaft (3) is connected to the output end of the motor (8) through a coupling (10). The second positioning slot (6) is slidably connected to the cross beam (1). The right end of the second positioning slot (6) is connected to the cross beam (1) through a spring (18). A control device (7) is arranged at the upper end of the second positioning slot (6). The cross beam (1) includes two cross bars (12) and two longitudinal bars (11). The two cross bars (12) are arranged in parallel. The longitudinal bar (11) includes a support portion (111) and a connecting portion (112) that are connected to each other. The connecting portion (112) is arranged obliquely downward to the right. The left ends of the two support portions (111) are respectively connected to both ends of one cross bar (12). The right ends of the two connecting portions (112) are respectively connected to both ends of the other cross bar (12). The first positioning slot (4) and the second positioning slot (6) are both connected to the inner side wall of the support portion (111). The bearing seat group (5) is installed on the upper end surface of the support portion (111). The motor (8) is installed on the upper end surface of the connecting portion (112). The control device (7) includes two sliding columns (71), two baffles (72), two guiding blocks (73), and an operating handle (74). The two sliding columns (71), baffles (72), and guiding blocks (73) are symmetrically distributed on both sides of the hoisting shaft (3). The baffle (72) is connected to the upper end of the second positioning slot (6). The guiding block (73) is connected to the upper right end of the support portion (111). The operating handle (74) has an inverted U-shaped structure. One end of the sliding column (71) is connected to the baffle (72), and the other end passes through the guiding block (73) and is connected to the lower end of the operating handle (74). The first positioning slot (4) includes a first fixing portion (41), a first connecting portion (42), and a first bottom plate (43). The first fixing portion (41) is fixedly connected to the inner side wall of the support portion (111). The first connecting portion (42) is arranged vertically, and the upper ends are respectively connected to the first fixing portion (41) and the lower end of the support portion (111). The first bottom plate (43) is connected to the lower end of the first connecting portion (42). The first bottom plate (43) is inclined downward to the left. Two symmetrically distributed through slots (16) are formed in the first fixing portion (41). Through holes are formed in the side walls of the through slots (16). Bearings (13) are arranged in the through slots (16). Pins (17) are arranged in the through holes. The pins (17) are connected to the inner rings of the bearings (13).

2. The hoisting device for an electric vehicle gearbox according to claim 1, wherein: The second positioning slot (6) includes a second connecting portion (61) and a second bottom plate (62). Grooves (9) are formed at both ends of the second connecting portion (61). Both of the supporting portions (111) are in contact with the inner walls of the grooves (9). The second connecting portion (61) is slidably connected to the supporting portions (111). The second bottom plate (62) is connected to the lower end of the second connecting portion (61), and the second bottom plate (62) slopes downward to the right.

3. The hoisting device for an electric vehicle transmission according to claim 2, wherein: Two symmetrically distributed through slots (16) are formed in the second connecting portion (61). Through holes are formed in the side walls of the through slots (16). Bearings (13) are arranged in the through slots (16), and pins (17) are arranged in the through holes. The pins (17) are connected to the inner rings of the bearings (13).

4. The hoisting device for an electric vehicle gearbox according to claim 1, wherein: The bearing seat group (5) includes three bearing seats (51), and the three bearing seats (51) are respectively sleeved on the left end, middle end, and right end of the hoisting shaft (3).

5. The hoisting device for an electric vehicle transmission according to claim 1, wherein: The cross section of the hoisting shaft (3) is cross-shaped.

6. A method for using the lifting device of an electric vehicle transmission according to claim 1, characterized in that: The usage method sequentially includes the following steps: Step 1: First, lift the right side of the cross beam (1), then align the first positioning slot (4) with the left longitudinal beam (19) of the vehicle carriage floor, then make the first positioning slot (4) clamp the left longitudinal beam (19), and then push the second positioning slot (6) to move leftward through the control device (7) so that it is located inside the right longitudinal beam (20). Then, lay the right side of the cross beam (1) flat, and then reset the control device (7). The second positioning slot (6) moves rightward and clamps the right longitudinal beam (20). Step 2: First, push the cross beam (1) so that it is exactly above the gearbox, then push the drum (2) so that the hook (15) is directly above the gearbox, then hook the hook (15) on the gearbox, then clamp the power clamp of the motor (8) on the vehicle battery terminal according to the positive and negative polarities, and then operate the controller to make the motor (8) rotate. The steel wire rope (14) winds around the drum (2), and the hook (15) pulls the gearbox upward to perform the repair and replacement of the gearbox. Step 3: First, remove the power clamp from the vehicle battery terminal, then push the second positioning slot (6) to move leftward through the control device (7) so that it disengages from the right longitudinal beam (20). Then, lift the right side of the cross beam (1), and then push the cross beam rightward so that the first positioning slot (4) disengages from the left longitudinal beam (19) to complete the disassembly of the device.

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