A kind of automobile nut repair and disassembly device

Abstract

The present invention belongs to the field of nut disassembly, and specifically is an automobile nut repair and disassembly device, comprising a device body and a nut sleeve, the bottom end of the device body is slidably connected to the top end of a movable base, the rear end of the nut sleeve is fixedly connected to a connecting column, the rear end of the connecting column is sleeved inside the connecting sleeve, the connecting sleeve is slidably connected in a working chamber, the working chamber is opened inside the device body, and the rear end of the connecting column is provided with an extension mechanism; through the structural design of the extension mechanism, the worm gear is rotated to make the convex column slide in the guide groove, the convex column will drive the top block to move during the sliding process, the top block will squeeze the arc plate, and the connecting rod connected to the arc plate will be rotated to push the connecting column to move forward, at this time the nut sleeve fixed at the front end of the connecting column extends forward a distance, thereby ensuring that the nut sleeve can extend into the interior of the component and smoothly dock with the nut.

Description

Technical Field

[0001] The invention relates to the field of nut disassembly, in particular to a device for repairing and disassembling automobile nuts. Background Art

[0002] In the process of automobile maintenance, it is inevitable to disassemble and replace parts on the car. Most of these parts are fixed by bolt connections. During the disassembly process, the nuts need to be unscrewed. The corresponding disassembly device can replace the maintenance personnel to manually disassemble the nuts, reduce labor intensity, and make the nut removal more efficient.

[0003] According to the patent document CN202210535740.X, a special-shaped nut disassembly manipulator includes a disassembly support frame, a disassembly support frame is connected to the disassembly support frame, which is driven by a disassembly power mechanism to slide horizontally and vertically, and a detection and protection device capable of detecting the number of rotations of the special-shaped nut and protecting the special-shaped nut is also installed on the disassembly support frame, and a driving sleeve driven to rotate by the disassembly power device is rotatably connected to the disassembly support frame, and the driving sleeve includes a synchronously rotating inner driving turret and a driving sleeve, the driving turret and the driving sleeve are connected by power through an automatic centering structure, the driving sleeve is connected by power through a toothed disc and a driving sleeve gear of the disassembly power machine, and the extended end of the driving sleeve is connected to a disassembly and assembly combination claw capable of combining with the special-shaped nut. The present invention can quickly and accurately clamp special-shaped nuts, and has the advantages of effectively ensuring the production quality of track plates and improving labor efficiency.

[0004] However, although the special-shaped nut disassembly robot in the above technology can automatically disassemble the nut, due to the limitation of the installation position of some parts, the space around the nuts fixed on these parts is relatively limited, and the driving sleeve is easily blocked by the parts and cannot be docked with the nut; therefore, a car nut maintenance and disassembly device is proposed to solve the above problem. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, a special-shaped nut disassembly robot in the above technology can automatically disassemble the nuts, but due to the limitation of the installation position of some parts, the space around the nuts fixed on these parts is relatively limited, and the driving sleeve is easily blocked by the parts and cannot be docked with the nuts. The present invention proposes an automobile nut maintenance and disassembly device.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the automobile nut repair and disassembly device described in the present invention includes a device body and a nut sleeve, the bottom end of the device body is slidably connected to the top end of the mobile base, the rear end of the nut sleeve is fixedly connected to the connecting column, the rear end of the connecting column is sleeved inside the connecting sleeve, the connecting sleeve is slidably connected in the working chamber, the working chamber is opened inside the device body, the rear end of the connecting column is provided with an extension mechanism, the front end of the connecting column is sleeved with a fixed sleeve, the rear end of the fixed sleeve is fixedly connected to the connecting sleeve, the rear end of the connecting sleeve is fixedly connected to a circular plate, the circular plate is rotatably connected inside the working chamber, the interior of the fixed sleeve is provided with a telescopic mechanism, the bottom end of the working chamber is connected to a rotating groove, and the interior of the rotating groove is provided with a driving mechanism.

[0007] Preferably, the extending mechanism includes five groups of connecting blocks, the five groups of connecting blocks are fixedly connected to the rear end of the connecting column, the rear end of the connecting block is rotatably connected to the connecting rod, the rear end of the connecting rod is rotatably connected to the arc plate, the rear end of the arc plate is fixedly connected with a moving block, the moving block is slidably connected to the inside of the moving groove, the moving groove is opened on the circular plate, the moving block is inserted on the fixed column, the outer side of the fixed column is sleeved with a spring, both ends of the fixed column are fixedly connected to the inner wall of the moving groove, and the two ends of the spring are respectively connected to the moving block and the moving groove. The inner wall is fixedly connected, the top of the arc plate contacts with the top block, the top block is slidably connected in the notch, the notch is opened at the front end of the disc, two groups of slide grooves are opened on the inner wall of the notch, the inside of the slide groove is slidably connected with a slider, the slider is fixedly connected to the two sides of the top block, the front end of the top block is fixedly connected with a boss, the boss is slidably connected in the guide groove, the guide groove is opened on the worm gear, the worm gear is rotatably connected to the inside of the working chamber, the rear end of the circular plate is fixedly connected to the connecting shaft, and a driving assembly is arranged on the rear end of the connecting shaft.

[0008] Preferably, the driving assembly includes a reduction motor, the rear end of the connecting shaft is fixedly connected to the reduction motor, the rear end of the reduction motor is fixedly connected to the driving motor, the bottom ends of the reduction motor and the driving motor are both fixedly connected in a motor slot, the motor slot is opened inside the device body, and the motor slot is communicated with the working chamber.

[0009] Preferably, the telescopic mechanism includes a telescopic sleeve, the rear end of the telescopic sleeve is inserted into the interior of a receiving groove, the receiving groove is opened at the front end of a fixed sleeve, two sets of second racks are fixedly connected to the inner wall of the telescopic sleeve, the second racks are meshed with a connecting gear, the connecting gear is rotatably connected in a movable groove, the movable groove is opened in the interior of the fixed sleeve, the movable groove is connected to the receiving groove, the side of the connecting gear away from the second rack is meshed with the first rack, and the first rack is fixedly connected to the connecting column.

[0010] Preferably, the driving mechanism includes a worm, the middle part of which is meshed with a worm wheel, the left and right sides of the worm are rotatably connected to the inner wall of the rotating groove, the right side of the worm is fixedly connected to a servo motor, and the left and right sides of the worm are both provided with driving gears, the bottom end of the driving gear is meshed with a fixed rack, the fixed rack is fixedly connected to a movable base, and a groove is provided at the bottom end of the device body.

[0011] Preferably, a plurality of groups of clamping blocks are fixedly connected to the inner wall of the front end of the telescopic sleeve, and the clamping blocks are slidably connected in clamping grooves, and the clamping grooves are provided on the outer side of the nut sleeve.

[0012] Preferably, the interior of the connecting column is hollow in design, and the outer side of the connecting column does not contact the inner walls of the fixing sleeve and the connecting sleeve.

[0013] Preferably, both the front and rear sides of the worm wheel are fixedly connected with T-rings, and the T-rings are slidably connected inside the T-slot, and the T-slot is opened on the inner wall of the working chamber.

[0014] Preferably, the side of the top block in contact with the arc-shaped plate is designed to be arc-shaped, and the disc is fixedly connected to the inner wall of the working chamber.

[0015] Preferably, a rectangular groove is provided at the top of the movable base, and a plurality of groups of rotating cylinders are rotatably connected to the inner wall of the rectangular groove, and the top of the rotating cylinder is in contact with the bottom end of the device body.

[0016] The present invention is beneficial in that:

[0017] 1. The present invention adopts the structural design of the extension mechanism, and the worm gear is rotated to make the boss slide in the guide groove. The boss will drive the top block to move during the sliding process, and the top block will squeeze the arc plate. The connecting rod connected to the arc plate is rotated to push the connecting column to move forward. At this time, the nut sleeve fixed at the front end of the connecting column extends forward for a distance, thereby ensuring that the nut sleeve can extend into the interior of the component and dock with the nut smoothly, solving the problem of a special-shaped nut disassembly manipulator in the above-mentioned technology, although the nut can be automatically disassembled, due to the limitation of the installation position of some components, the space around the nuts fixed on these components is relatively limited, and the driving sleeve is easily blocked by the components and cannot be docked with the nut;

[0018] 2. The present invention adopts the structural design of the telescopic mechanism. When the nut sleeve moves forward, the first rack fixed on the connecting column drives the connecting gear to rotate, thereby driving the second rack to move backward through the connecting gear, and storing the telescopic sleeve into the storage groove, thereby increasing the length of the nut sleeve extending forward, so as to facilitate docking of the nut at a deeper position;

[0019] 3. Through the structural design of the driving mechanism of the present invention, while the worm drives the worm wheel to rotate, the driving gears mounted on the left and right sides of the worm will also engage with the fixed rack, thereby driving the device body to move backward for a distance, so as to avoid the nut sleeve from abutting against the parts when the nut sleeve is extended forward because the distance between the front end of the nut sleeve and the parts is close. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the bottom end of the device body of the present invention;

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the device body of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the telescopic mechanism of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the mobile base of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure of the drive assembly of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the extension mechanism of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the disc of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a circular plate of the present invention;

[0030] Fig.10 It is a schematic diagram of the internal structure of the device body of the present invention.

[0031] In the figure: 1, device body; 20, nut sleeve; 21, connecting column; 22, connecting block; 23, connecting rod; 24, arc plate; 25, notch; 26, slide groove; 27, disc; 29, top block; 30, slider; 31, boss; 32, guide groove; 33, worm gear; 34, connecting shaft; 35, reduction motor; 36, drive motor; 37, working chamber; 38, motor groove; 39, disc; 40, moving block; 41, moving groove; 42, fixed column ; 43. Spring; 44. First rack; 45. Connecting gear; 46. Second rack; 47. Telescopic sleeve; 48. Storage slot; 49. Movable slot; 50. Fixed sleeve; 51. Slot; 52. Block; 53. Connecting sleeve; 54. Driving gear; 55. Groove; 56. Fixed rack; 57. Moving base; 59. Rectangular slot; 60. Rotating cylinder; 61. T-slot; 62. Rotating slot; 63. T-ring; 64. Worm; 65. Servo motor. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1 - Fig.10As shown, a vehicle nut repair and disassembly device comprises a device body 1 and a nut sleeve 20, the bottom end of the device body 1 is slidably connected to the top end of a movable base 57, the rear end of the nut sleeve 20 is fixed to a connecting column 21 by welding, the rear end of the connecting column 21 is sleeved inside a connecting sleeve 53, a plurality of groups of long grooves are provided on the surface of the connecting sleeve 53, so as to ensure the normal movement of the connecting rod 23, the connecting sleeve 53 is slidably connected to a working chamber 37, the working chamber 37 is provided inside the device body 1, the rear end of the connecting column 21 is provided with an extension mechanism, the front end of the connecting column 21 is sleeved with a fixed sleeve 50, the rear end of the fixed sleeve 50 is fixed to the connecting sleeve 53 by welding, the rear end of the connecting sleeve 53 is fixed to a circular plate 39 by welding, the circular plate 39 is rotatably connected to the inside of the working chamber 37, a telescopic mechanism is provided inside the fixed sleeve 50, the bottom end of the working chamber 37 is communicated with a rotating groove 62, and a driving mechanism is provided inside the rotating groove 62;

[0034] Furthermore, the extending mechanism includes five groups of connecting blocks 22, which are all fixed to the rear end of the connecting column 21 by welding. The rear end of the connecting block 22 is rotatably connected to the connecting rod 23, and the rear end of the connecting rod 23 is rotatably connected to the arc plate 24. The rear end of the arc plate 24 is welded and fixed with a moving block 40. The moving block 40 is rectangular in design and contacts the inner wall of the moving groove 41 on both sides. The moving block 40 is slidably connected to the inside of the moving groove 41. The moving groove 41 is opened on the circular plate 39. The moving groove 41 is long and rectangular in design. The moving block 40 is inserted into the fixed column 42. The outer side of the fixed column 42 is provided with a spring 43. Both ends of the fixed column 42 are fixed to the inner wall of the moving groove 41 by welding. The two ends of the spring 43 are respectively welded and fixed to the moving block 40 and the inner wall of the moving groove 41. The top end of the plate 24 contacts with the top block 29, and the top block 29 is slidably connected in the notch 25. The notch 25 is designed as a long rectangle and the inner wall keeps in contact with the top block 29 to prevent the top block 29 from shaking when moving. The notch 25 is opened at the front end of the disc 27, and two groups of slide grooves 26 are opened on the inner wall of the notch 25. The inside of the slide groove 26 is slidably connected with a slider 30. The slider 30 is designed as a rectangle and its size is adapted to the slide groove 26. The slider 30 is welded and fixed on both sides of the top block 29. A boss 31 is welded and fixed at the front end of the top block 29. The boss 31 is slidably connected in the guide groove 32. The guide groove 32 is opened on the worm gear 33. The worm gear 33 is rotatably connected to the inside of the working chamber 37. The rear end of the circular plate 39 is fixed to the connecting shaft 34 by welding, and a driving component is arranged on the rear end of the connecting shaft 34.

[0035] Further, the telescopic mechanism includes a telescopic sleeve 47, the rear end of which is inserted into the interior of a receiving groove 48, the receiving groove 48 is provided at the front end of a fixed sleeve 50, two sets of second racks 46 are welded and fixed on the inner wall of the telescopic sleeve 47, the second racks 46 are meshed with a connecting gear 45, the connecting gear 45 is rotatably connected in a movable groove 49, the movable groove 49 is provided in the interior of the fixed sleeve 50, the movable groove 49 is communicated with the receiving groove 48, the side of the connecting gear 45 away from the second rack 46 is meshed with the first rack 44, and the first rack 44 is welded and fixed on the connecting column 21;

[0036] Further, the driving mechanism includes a worm 64, the middle of which is meshed with the worm wheel 33, the left and right sides of the worm 64 are both rotatably connected to the inner wall of the rotating groove 62, the right side of the worm 64 is connected to the output shaft of the servo motor 65, the left and right sides of the worm 64 are sleeved with a driving gear 54, the bottom end of the driving gear 54 is meshed with a fixed rack 56, the fixed rack 56 is welded and fixed on the moving base 57, and the bottom end of the device body 1 is provided with a groove 55;

[0037] During operation, a special-shaped nut disassembly manipulator in the prior art can automatically disassemble the nut, but due to the limitation of the installation position of some parts, the space around the nuts fixed on these parts is relatively limited, and the driving sleeve is easily blocked by the parts and cannot be docked with the nut. The present application adopts the structural design of the extension mechanism to rotate the worm gear 33 to make the boss 31 slide in the guide groove 32. The boss 31 will drive the top block 29 to move during the sliding process, and the top block 29 will squeeze the arc plate 24, rotating the connection on the arc The connecting rod 23 on the shaped plate 24 will push the connecting column 21 to move forward. At this time, the nut sleeve 20 fixed at the front end of the connecting column 21 extends forward for a distance, thereby ensuring that the nut sleeve 20 can extend into the interior of the component and smoothly dock with the nut. When the nut sleeve 20 is to be extended forward, the worm gear 33 is first driven by the worm 64 to rotate a certain angle. When the worm gear 33 rotates, since the worm gear 33 is provided with a guide groove 32, the boss 31 is pushed to slide in the guide groove 32, and the boss 31 will move closer to the center of the worm gear 33. The top block 29 fixedly connected to the rear end of the boss 31 will move in the notch 25, and the top block 29 will continuously squeeze the arc plate 24, and the arc plate 24 will gradually move closer. The rear end of the arc plate 24 is fixed to the moving block 40, and a spring 43 is also fixed on the moving block 40. The spring 43 is continuously compressed during the movement of the arc plate 24. Since the two ends of the connecting rod 23 are respectively rotatably connected to the connecting block 22 and the arc plate 24, the arc plate 24 will be pushed forward by the connecting rod 23 during the process of moving closer. The connecting block 22 pushes the connecting column 21 forward, and the nut sleeve 20 fixed at the front end of the connecting column 21 will extend forward. At this point, the operation of extending the nut sleeve 20 forward is completed. Similarly, when the extended nut sleeve 20 is to be retracted, it is only necessary to drive the worm gear 33 to rotate in the reverse direction, wherein the connecting sleeve 53 rotates inside the working chamber 37 and a long groove corresponding to the connecting rod 23 is also provided on the connecting sleeve 53 to ensure that the connecting rod 23 can pass through the connecting sleeve 53 smoothly and will not abut against the connecting sleeve 53 when the connecting rod 23 moves.

[0038] Through the structural design of the telescopic mechanism, when the nut sleeve 20 moves forward, the first rack 44 fixed on the connecting column 21 will drive the connecting gear 45 to rotate, thereby driving the second rack 46 to move backward through the connecting gear 45, and storing the telescopic sleeve 47 in the storage groove 48, thereby increasing the length of the nut sleeve 20 extending forward, so as to facilitate docking of the nut at a deeper position. When the connecting column 21 drives the nut sleeve 20 to extend forward, the two sets of first racks 44 fixed on the connecting column 21 can be connected to the connecting gear 46 by connecting the connecting gear 46. 5 is engaged to drive the connecting gear 45 to rotate. When the connecting gear 45 rotates, the second rack 46 meshing with the connecting gear 45 will move backward, and the telescopic sleeve 47 fixed to the second rack 46 will be gradually received in the receiving groove 48. The telescopic sleeve 47 moves backward to extend the part of the nut sleeve 20 that protrudes forward, so as to facilitate the docking of the nut at a deeper position. The telescopic sleeve 47 is sleeved on the outside of the nut sleeve 20, and can also protect the nut sleeve 20 to reduce the bumps on the nut sleeve 20.

[0039] Through the structural design of the driving mechanism, when the worm 64 drives the worm wheel 33 to rotate, the driving gears 54 set on the left and right sides of the worm 64 will also mesh with the fixed rack 56, thereby driving the device body 1 to move backward for a distance to avoid the nut sleeve 20 from abutting against the parts when the nut sleeve 20 is extended forward because the distance between the front end of the nut sleeve 20 and the parts is close. The bottom end of the worm wheel 33 rotates by meshing with the worm 64, and the worm wheel 33 is driven counterclockwise by the clockwise rotation of the worm 64. When the worm 64 rotates, the driving gears 54 mounted on both sides thereof will move on the fixed rack 56, thereby driving the device body 1 to move backward. A groove 55 is also provided on the bottom end of the device body 1. The groove 55 is used to ensure that the top end of the fixed rack 56 does not abut against the bottom end of the device body 1, and most of the bottom end of the device body 1 does not contact the top end of the movable base 57, so as to reduce the friction generated by the device body 1 and the movable base 57 during the movement, so that the device body 1 is smoother during the movement.

[0040] Further, the driving assembly includes a reduction motor 35, the rear end of the connecting shaft 34 is connected to the output shaft of the reduction motor 35, the rear end of the reduction motor 35 is connected to the output shaft of the driving motor 36, the bottom ends of the reduction motor 35 and the driving motor 36 are both welded and fixed in the motor slot 38, the motor slot 38 is provided inside the device body 1, and the motor slot 38 is communicated with the working chamber 37;

[0041] During operation, the rear end of the circular plate 39 is connected to the connecting shaft 34, and the front end of the driving motor 36 is connected to the reduction motor 35. The reduction motor 35 is used to increase the torque of the driving motor 36 so that the nut sleeve 20 can smoothly screw off the nut when it is docked with the nut. The reduction motor 35 and the driving motor 36 are both fixed in the motor slot 38 to prevent movement during operation.

[0042] Furthermore, a plurality of blocks 52 are welded and fixed on the inner wall of the front end of the telescopic sleeve 47. The blocks 52 are designed to be long and rectangular. The blocks 52 are slidably connected in the slots 51. The blocks 52 keep in contact with the inner wall of the slots 51. The slots 51 are provided on the outer side of the nut sleeve 20.

[0043] During operation, as the nut sleeve 20 moves forward, the block 52 fixed on the inner wall of the telescopic sleeve 47 will slide in the slot 51, thereby ensuring that the nut sleeve 20 does not shake during movement through the abutment between the block 52 and the inner wall of the slot 51. At the same time, the abutment between the block 52 and the front end of the inner wall of the slot 51 also prevents the nut sleeve 20 from moving backward due to external force.

[0044] Furthermore, the interior of the connecting column 21 is hollow, and the outer side of the connecting column 21 does not contact the inner walls of the fixing sleeve 50 and the connecting sleeve 53;

[0045] During operation, the interior of the connecting column 21 adopts a hollow design to reduce the weight of the connecting column 21 and facilitate pushing the connecting column 21 to move, and the connecting column 21 does not contact the inner walls of the fixing sleeve 50 and the connecting sleeve 53 to reduce the friction of the connecting column 21 when moving.

[0046] Furthermore, a T-ring 63 is welded and fixed to both the front and rear sides of the worm wheel 33. The T-ring 63 is slidably connected to the inside of the T-slot 61. The T-slot 61 is provided on the inner wall of the working chamber 37.

[0047] During operation, the position of the worm wheel 33 inside the working chamber 37 is fixed by the structural design of the T-slot 61 and the T-ring 63, ensuring that the front and rear sides of the worm wheel 33 will not contact the inner wall of the working chamber 37 during rotation, so as to reduce the wear on the surface of the worm wheel 33, while ensuring the normal engagement between the bottom end of the worm wheel 33 and the worm 64.

[0048] Furthermore, the side of the top block 29 that contacts the arc plate 24 is designed to be arc-shaped, and the disc 27 is welded and fixed to the inner wall of the working chamber 37;

[0049] During operation, the top block 29 has a curved design on one side close to the curved plate 24 to increase the contact area with the curved plate 24 and better fit the surface of the curved plate 24 , while the disc 27 is fixed in the working chamber 37 to prevent movement.

[0050] Furthermore, a rectangular groove 59 is formed at the top of the movable base 57, and a plurality of rotating cylinders 60 are rotatably connected to the inner wall of the rectangular groove 59, and the top of the rotating cylinder 60 contacts the bottom of the device body 1;

[0051] During operation, the bottom end of the device body 1 is assisted in supporting by the contact between the rotating cylinder 60 and the bottom end of the device body 1, so that the device body 1 can move more smoothly on the moving base 57. At the same time, the rotating cylinder 60 can also reduce the friction generated between the device body 1 and the moving base 57 when moving, so as to facilitate the movement of the device body 1.

[0052] Working principle: A special-shaped nut disassembly manipulator in the prior art can automatically disassemble the nut, but due to the limitation of the installation position of some parts, the space around the nuts fixed on these parts is relatively limited, and the driving sleeve is easily blocked by the parts and cannot be docked with the nut. In this case, an automobile nut repair and disassembly device is designed through the structural design of the extension mechanism, which rotates the worm gear 33 to make the boss 31 slide in the guide groove 32. The boss 31 will drive the top block 29 to move during the sliding process, and the top block 29 will squeeze the arc The connecting rod 23 connected to the arc plate 24 is rotated to push the connecting column 21 forward. At this time, the nut sleeve 20 fixed at the front end of the connecting column 21 extends forward for a distance, thereby ensuring that the nut sleeve 20 can extend into the interior of the component and smoothly dock with the nut. When the nut sleeve 20 is to be extended forward, the worm gear 33 is first driven by the worm 64 to rotate a certain angle. When the worm gear 33 rotates, since the guide groove 32 is provided on the worm gear 33, the protruding column 31 is pushed to slide in the guide groove 32, and the protruding column 31 moves toward the worm gear 33. The center of the circle approaches each other, and the top block 29 fixedly connected to the rear end of the protrusion 31 will move in the notch 25, and the top block 29 will continuously squeeze the arc plate 24, and the arc plate 24 will gradually approach each other. The rear end of the arc plate 24 is fixed to the moving block 40, and a spring 43 is also fixed on the moving block 40. The spring 43 is continuously compressed during the movement of the arc plate 24. Since the two ends of the connecting rod 23 are respectively rotatably connected to the connecting block 22 and the arc plate 24, the arc plate 24 will be moved by the connecting rod 23 during the approaching process. Push the connecting block 22 forward, thereby pushing the connecting column 21 forward, and the nut sleeve 20 fixed at the front end of the connecting column 21 will extend forward. At this point, the operation of extending the nut sleeve 20 forward is completed. Similarly, when the extended nut sleeve 20 is to be retracted, it is only necessary to drive the worm gear 33 to rotate in the reverse direction, wherein the connecting sleeve 53 rotates inside the working chamber 37 and a long groove corresponding to the connecting rod 23 is also provided on the connecting sleeve 53 to ensure that the connecting rod 23 can pass through the connecting sleeve 53 smoothly and will not abut against the connecting sleeve 53 when the connecting rod 23 moves.

[0053] Through the structural design of the telescopic mechanism, when the nut sleeve 20 moves forward, the first rack 44 fixed on the connecting column 21 will drive the connecting gear 45 to rotate, thereby driving the second rack 46 to move backward through the connecting gear 45, and storing the telescopic sleeve 47 in the storage groove 48, thereby increasing the length of the nut sleeve 20 extending forward, so as to facilitate docking of the nut at a deeper position. When the connecting column 21 drives the nut sleeve 20 to extend forward, the two sets of first racks 44 fixed on the connecting column 21 can be connected to the connecting gear 46 by connecting the connecting gear 46. 5 is engaged to drive the connecting gear 45 to rotate. When the connecting gear 45 rotates, the second rack 46 meshing with the connecting gear 45 will move backward, and the telescopic sleeve 47 fixed to the second rack 46 will be gradually received in the receiving groove 48. The telescopic sleeve 47 moves backward to extend the part of the nut sleeve 20 that protrudes forward, so as to facilitate the docking of the nut at a deeper position. The telescopic sleeve 47 is sleeved on the outside of the nut sleeve 20, and can also protect the nut sleeve 20 to reduce the bumps on the nut sleeve 20.

[0054] Through the structural design of the driving mechanism, when the worm 64 drives the worm wheel 33 to rotate, the driving gears 54 set on the left and right sides of the worm 64 will also mesh with the fixed rack 56, thereby driving the device body 1 to move backward for a distance to avoid the nut sleeve 20 from abutting against the parts when the nut sleeve 20 is extended forward because the distance between the front end of the nut sleeve 20 and the parts is close. The bottom end of the worm wheel 33 rotates by meshing with the worm 64, and the worm wheel 33 is driven counterclockwise by the clockwise rotation of the worm 64. When the worm 64 rotates, the driving gears 54 mounted on both sides thereof will move on the fixed rack 56, thereby driving the device body 1 to move backward. A groove 55 is also provided on the bottom end of the device body 1. The groove 55 is used to ensure that the top end of the fixed rack 56 does not abut against the bottom end of the device body 1, and most of the bottom end of the device body 1 does not contact the top end of the movable base 57, so as to reduce the friction generated by the device body 1 and the movable base 57 during the movement, so that the device body 1 is smoother during the movement.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A vehicle nut repair and disassembly device, comprising a device body (1) and a nut sleeve (20), wherein the bottom end of the device body (1) is slidably connected to the top end of a movable base (57), and characterized in that: The rear end of the nut sleeve (20) is fixedly connected to the connecting column (21), the rear end of the connecting column (21) is sleeved inside the connecting sleeve (53), the connecting sleeve (53) is slidably connected in the working chamber (37), the working chamber (37) is opened inside the device body (1), the rear end of the connecting column (21) is provided with an extension mechanism, the front end of the connecting column (21) is sleeved with a fixing sleeve (50), the rear end of the fixing sleeve (50) is fixedly connected to the connecting sleeve (53), the rear end of the connecting sleeve (53) is fixedly connected to the circular plate (39), the circular plate (39) is rotatably connected inside the working chamber (37), the interior of the fixing sleeve (50) is provided with a telescopic mechanism, the bottom end of the working chamber (37) is communicated with the rotating groove (62), and the interior of the rotating groove (62) is provided with a driving mechanism; The extending mechanism comprises five groups of connecting blocks (22), the five groups of connecting blocks (22) are all fixedly connected to the rear end of the connecting column (21), the rear end of the connecting block (22) is rotatably connected to the connecting rod (23), the rear end of the connecting rod (23) is rotatably connected to the arc plate (24), the rear end of the arc plate (24) is fixedly connected to a moving block (40), the moving block (40) is slidably connected to the inside of a moving groove (41), the moving groove (41) is provided on the circular plate (39), the moving block (40) is inserted into the fixed column (42), the outer side of the fixed column (42) is sleeved with a spring (43), both ends of the fixed column (42) are fixedly connected to the inner wall of the moving groove (41), and the two ends of the spring (43) are respectively fixed to the moving block (40) and the inner wall of the moving groove (41). The top end of the arc plate (24) contacts with the top block (29), the top block (29) is slidably connected in the notch (25), the notch (25) is provided at the front end of the disc (27), two groups of slide grooves (26) are provided on the inner wall of the notch (25), the inside of the slide groove (26) is slidably connected with a slider (30), the slider (30) is fixedly connected to both sides of the top block (29), the front end of the top block (29) is fixedly connected with a boss (31), the boss (31) is slidably connected in a guide groove (32), the guide groove (32) is provided on a worm gear (33), the worm gear (33) is rotatably connected to the inside of the working chamber (37), the rear end of the circular plate (39) is fixedly connected to the connecting shaft (34), and the rear end of the connecting shaft (34) is provided with a driving assembly; The driving assembly comprises a reduction motor (35), the rear end of the connecting shaft (34) is fixedly connected to the reduction motor (35), the rear end of the reduction motor (35) is fixedly connected to the driving motor (36), the bottom ends of the reduction motor (35) and the driving motor (36) are both fixedly connected in a motor slot (38), the motor slot (38) is provided inside the device body (1), and the motor slot (38) is communicated with the working chamber (37); The telescopic mechanism comprises a telescopic sleeve (47), the rear end of the telescopic sleeve (47) being inserted into a receiving groove (48), the receiving groove (48) being provided at the front end of a fixed sleeve (50), two sets of second racks (46) being fixedly connected to the inner wall of the telescopic sleeve (47), the second racks (46) being meshed with a connecting gear (45), the connecting gear (45) being rotatably connected in a movable groove (49), the movable groove (49) being provided in the fixed sleeve (50), the movable groove (49) being communicated with the receiving groove (48), the side of the connecting gear (45) away from the second racks (46) being meshed with a first rack (44), the first rack (44) being fixedly connected to a connecting column (21).

2. The automobile nut repair and disassembly device according to claim 1, characterized in that: The driving mechanism comprises a worm (64), the middle part of the worm (64) meshes with the worm wheel (33), the left and right sides of the worm (64) are both rotatably connected to the inner wall of the rotating groove (62), the right side of the worm (64) is fixedly connected to the servo motor (65), the left and right sides of the worm (64) are both sleeved with a driving gear (54), the bottom end of the driving gear (54) meshes with a fixed rack (56), the fixed rack (56) is fixedly connected to the movable base (57), and the bottom end of the device body (1) is provided with a groove (55).

3. The automobile nut repair and disassembly device according to claim 2, characterized in that: A plurality of groups of clamping blocks (52) are fixedly connected to the inner wall at the front end of the telescopic sleeve (47), and the clamping blocks (52) are slidably connected in the clamping grooves (51), and the clamping grooves (51) are provided on the outside of the nut sleeve (20).

4. The automobile nut repair and disassembly device according to claim 3, characterized in that: The interior of the connecting column (21) is of hollow design, and the outer side of the connecting column (21) does not contact the inner walls of the fixing sleeve (50) and the connecting sleeve (53).

5. The automobile nut repair and removal device according to claim 4, characterized in that: The front and rear sides of the worm wheel (33) are both fixedly connected with T-shaped rings (63), and the T-shaped rings (63) are slidably connected inside a T-shaped groove (61), and the T-shaped groove (61) is provided on the inner wall of the working chamber (37).

6. The automobile nut repair and removal device according to claim 1, characterized in that: The side of the top block (29) that contacts the arc plate (24) is designed to be arc-shaped, and the disc (27) is fixedly connected to the inner wall of the working chamber (37).

7. The automobile nut repair and removal device according to claim 1, characterized in that: A rectangular groove (59) is formed at the top of the movable base (57), and a plurality of groups of rotating cylinders (60) are rotatably connected to the inner wall of the rectangular groove (59), wherein the top of the rotating cylinder (60) contacts the bottom of the device body (1).

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