Automobile wheel hub grinding fixture

Abstract

The present invention relates to the field of auxiliary devices for the production of automobile parts, and discloses an automobile wheel hub grinding fixture, comprising a base, a replacement column rotatably connected in the middle of which, the top end of which is connected to a support mechanism; a rotating mechanism connected to the support mechanism and used for changing the angle; an extension rod connected to the rotating mechanism, and the other end of which is connected to a fixing mechanism. The present invention can realize rotation at multiple angles and rotation of the wheel hub, thereby making it possible to polish all directions of the wheel hub well, making the probability of each surface being processed tend to be equal, making the quality stable, and at the same time achieving rapid work and increasing a certain degree of efficiency.

Description

Technical Field

[0001] The present invention relates to the field of automobile parts production auxiliary devices, in particular to an automobile wheel hub grinding fixture. Background Art

[0002] The wheel hub is the part of the wheel center where the axle is installed, which is often called the "wheel rim" or "steel rim". It is the main moving component of the car. During its production, it needs to undergo multiple treatments, among which shot peening and polishing treatment is required after casting, which can reduce its internal stress and the effects of surface impurities, and at the same time make the wheel hub more in line with subsequent use needs.

[0003] When shot peening a wheel hub, existing technology generally uses a suspended fixture to suspend the wheel hub in a shot peening machine, which then peens the wheel hub from both sides. Although, in terms of probability, the probability of each point being shot peened over a long period of time is basically the same, the periphery and other parts of the wheel hub may still not be shot peened multiple times, which makes the entire grinding process time-consuming and the overall treatment is not perfect. Summary of the Invention

[0004] In order to solve the technical problem of incomplete grinding, the present invention provides an automobile wheel hub grinding fixture.

[0005] The present invention is implemented by the following technical solution: a vehicle wheel hub grinding fixture, comprising:

[0006] A base, wherein a replacement column is rotatably connected in the middle thereof, and a top end of the replacement column is connected to a support mechanism;

[0007] A rotating mechanism connected to the supporting mechanism for changing the angle;

[0008] The extension rod is connected to the rotating mechanism, and the other end of the extension rod is connected to the fixing mechanism.

[0009] As a further improvement of the above solution, the support mechanism includes:

[0010] A transverse frame is fixedly connected to the top of the replacement column and has a high-pressure air pump fixedly connected therein;

[0011] A transverse rod, which is fixedly connected to the transverse frame, and has plug rods fixedly connected to both sides thereof, wherein interconnected air ducts are provided in the transverse rod and the plug rod, and the output end of the high-pressure air pump is connected to the air duct;

[0012] The transmission frame is fixedly connected to the insertion rod, and a protective tube fixedly connected to the insertion rod is fixedly connected to the upper side of the transmission frame. The protective tube is provided with a rotation groove, and a flexible sleeve fixedly connected to the protective tube is provided in the rotation groove;

[0013] a transmission shaft, which is located in the protective cylinder and is rotatably connected to the protective cylinder;

[0014] A fixed frame, which is fixedly connected to the transmission shaft and fixedly connected to the flexible sleeve on both sides, and the two sides of the fixed frame are transmission-connected to a fixing frame 1 located outside the protective tube;

[0015] The mounting cavity is provided in the fixing frame, and one side of the mounting cavity is connected to a hose 1 connected to the transmission frame;

[0016] The fixing frame is inserted into the installation cavity and matched with the fixing frame 1. A steering rod is inserted into the fixing frame, and a control tube 1 is provided in the steering rod. The steering rod is sleeved with the extension rod, and a control tube 2 is provided in the extension rod.

[0017] As a further improvement of the above solution, the fixing frame 1 and the steering rod are both connected to the fixing frame 2, and a guide channel is provided in the fixing frame, the steering rod and the extension rod, and the control tube 1 and the control tube 2 both control the on and off of the guide channel.

[0018] As a further improvement of the above solution, the fixing mechanism includes:

[0019] A rotating sleeve is provided at one end of the extension rod and a rotating tube is fixedly connected in the middle thereof;

[0020] The support tube is sleeved on the rotating sleeve, and one end of the support tube is fixedly connected to the support shaft;

[0021] The extension sleeve is fixedly connected to the support tube and has an auxiliary channel in communication with the support tube;

[0022] A plurality of balancing rods are provided, one end of which is fixedly connected to the extension sleeve;

[0023] a middle strip, which is fixedly connected to the extension sleeve and has an extrusion channel in the middle thereof, which is in communication with the auxiliary channel;

[0024] The guide tube is fixedly connected to the middle bar, and there are multiple guide tubes. A limiting tube is provided inside the guide tube for sliding sleeve. One side of the limiting tube is fixedly connected to a pressure control tube connected to the extrusion channel, and one side of the limiting tube is fixedly connected to a spring fixedly connected to the guide tube.

[0025] As a further improvement of the above solution, a filter sleeve is provided in the support tube, and a limiting pin connected to the support tube is provided on the rotating sleeve.

[0026] As a further improvement of the above solution, a plurality of trigger blocks are fixedly connected to the extension sleeve, an adsorption limit ring is connected to the support shaft, and the cross section of the rotating sleeve adopts an H-shaped structure.

[0027] As a further improvement of the above solution, the rotating mechanism includes:

[0028] A gearbox is fixedly connected to the transmission shaft, and its output end is drivingly connected to gear 1, and one side of the gear 1 is meshedly connected to gear 2 fixedly connected to the transmission shaft;

[0029] Drive box 1, which is fixedly connected to the transmission frame, and the output end is connected to the input end of the gearbox;

[0030] A bogie, which is fixedly connected to the transmission shaft and rotatably connected to the insertion rod, with guide rollers rotatably connected to both sides of the bogie and a drive roller rotatably connected to one side of the bogie;

[0031] Hose 2, one end of which is connected to the air guide channel, and the other end of which is connected to drive box 2 fixedly connected to the bogie, and the output end of drive box 2 is transmission-connected to the drive roller;

[0032] Hose 3, one end of which is connected to drive box 2, and the other end is connected to a central box connected to the first drive box, and one side of the central box is connected to hose 4 connected to drive box 1;

[0033] The driving ring is sleeved on the outer sides of the guide roller and the driving roller.

[0034] As a further improvement of the above scheme, the gearbox includes an outer shell fixedly connected to the transmission frame, a half gear is rotatably connected in the outer shell, the outer wall of the half gear is meshedly connected to a symmetrically arranged rack 1, the rack 1 is fixedly connected to a movable frame slidably connected to the outer shell, one side of the movable frame is fixedly connected to a rack 2, the outer wall of the rack 2 is meshedly connected to a gear 4, one side of the gear 4 is transmission-connected to a transmission component 1, one end of the transmission component 1 is transmission-connected to a transmission, and the output end of the transmission is connected to.

[0035] As a further improvement of the above solution, the outer walls of the guide roller and the driving roller are both provided with raised rings, the driving ring is provided with a recessed groove for accommodating the raised ring, and the outer wall of the driving ring is provided with a friction ring.

[0036] As a further improvement of the above scheme, a motor is provided in the base, the output end of the motor is connected to the transmission component 2 which is connected to the replacement column, a backup power supply is provided in the base, a ventilation groove is provided in the replacement column, the ventilation groove is connected to the ventilation hole located on the replacement column, and a filter block is provided in the ventilation groove.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. Through the cooperation of multiple devices, rotation at multiple angles and rotation of the hub can be achieved, so that all directions of the hub can be well polished, making the probability of each surface being processed tend to be equal, making the quality stable, and at the same time achieving fast work and increasing a certain efficiency.

[0039] 2. Through the combination of multiple rods, they can be replaced or adjusted at any time to adapt to the work of wheels of different specifications. At the same time, air pressure is used to drive the movement of limiting tubes, etc. to achieve limitation and cleaning, further ensuring fast and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic front cross-sectional view of the present invention;

[0041] Figure 2 It is a top cross-sectional schematic diagram of the present invention;

[0042] Figure 3 It is a partial top cross-sectional schematic diagram of the present invention;

[0043] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0044] Figure 5 for Figure 2 A schematic diagram of the structure enlarged in the middle;

[0045] Figure 6 It is a schematic diagram of the front cross-section of the fixing mechanism;

[0046] Figure 7 It is a partial front view cross-sectional schematic diagram of the fixing mechanism;

[0047] Figure 8 for Figure 7 The enlarged structural diagram at C in the middle;

[0048] Figure 9 It is a schematic cross-sectional view of the transmission from the left.

[0049] Description of main symbols:

[0050] 1. Base; 2. Motor; 3. Backup power supply; 4. Air vent; 5. Replacement column; 6. Filter block; 7. Horizontal frame; 8. High-pressure air pump; 9. Horizontal rod; 10. Air guide; 11. Insert rod; 12. Drive roller; 13. Hose 3; 14. Central box; 15. Flexible sleeve; 16. Drive shaft; 17. Gearbox; 18. Gear 1; 19. Drive box 1; 20. Gear 2; 21. Drive frame; 23. Protective sleeve; 24. Bogie; 25. Drive ring; 26. Guide roller; 27. Drive shaft; 28. Extension rod; 29. ​​Support shaft; 30. Balance bar; 31. Extension sleeve; 33. Hose 2. 34. Drive box 2; 35. Mounting cavity; 36. Steering rod; 37. Control tube 1; 38. Fixed frame; 39. Fixed frame; 40. Fixed frame 1; 41. Hose 1; 43. Guide channel; 44. Control tube 2; 45. Fixed frame 2; 46. Rotating tube; 47. Filter sleeve; 48. Support tube; 49. Rotating sleeve; 50. Trigger block; 51. Middle strip; 52. Limiting tube; 53. Extrusion channel; 54. Spring; 55. Guide tube; 56. Pressure control tube; 57. Housing; 58. Moving frame; 59. Gear 4; 60. Transmission assembly 1; 61. Transmission assembly; 63. Rack 1; 64. Half gear. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0052] Example:

[0053] Please combine Figure 1-9 ,

[0054] An automobile wheel hub grinding fixture, comprising:

[0055] The base 1 has a replacement column 5 connected in the middle for rotation. The top of the replacement column 5 is connected to a supporting mechanism, which is supported by the base 1. At the same time, the replacement column 5 is lifted up, and then the subsequent mechanism is supported and limited by the supporting mechanism. The rotating mechanism is connected to the supporting mechanism and is used to change the angle; the extension rod 28 is connected to the rotating mechanism, and the other end of the extension rod is connected to the fixing mechanism. The extension rod 28 is connected and supported, and can be moved at the same time for easy disassembly and assembly.

[0056] The supporting mechanism includes: a transverse frame 7, which is fixedly connected to the top of the replacement column 5, and a high-pressure air pump 8 is fixedly connected to the inside thereof. The transverse frame 7 is limited and supported, and the external gas can be transported through the high-pressure air pump 8. A transverse rod 9 is fixedly connected to the transverse frame 7, and a plug rod 11 is fixedly connected on both sides thereof. The transverse rod 9 and the plug rod 11 are provided with an air duct 10 that is interconnected. The output end of the high-pressure air pump 8 is connected to the air duct 10. The two ends of the transverse rod 9 are plug rods 11, which ensure the space for internal movement and at the same time pass through the air duct. 10 transmits the gas blown out by the high-pressure air pump 8, the transmission frame 21 is fixedly connected to the insertion rod 11, and a protective cylinder 23 fixedly connected to the insertion rod 11 is fixedly connected to the upper side thereof, and a rotation groove is provided on the protective cylinder 23, and a flexible sleeve 15 fixedly connected to the protective cylinder 23 is provided in the rotation groove. The protective cylinder 23 supports and protects, and the transmission shaft 16 is located in the protective cylinder 23 and is rotatably connected to the protective cylinder 23. The fixed frame 38 is fixedly connected to the transmission shaft 16, and its two sides are fixedly connected to the flexible sleeve 15. The fixed frame 38 The transmission connection on both sides is provided with a fixing frame 40 located outside the protective tube 23. The transmission shaft 16 can be rotated after the transmission, and further drives the fixing block 38 to rotate to achieve the angle offset. The fixing frame 40 is fixed after installation. The installation cavity 35 is provided in the fixing frame 38. One side of the fixing frame 35 is connected to a hose 41 connected to the transmission frame 21. The installation cavity 35 is convenient for installation. The fixing frame 39 is inserted in the installation cavity 35 and cooperates with the fixing frame 40. The steering rod 36 is inserted in the fixing frame 39. A control tube 1 37 is provided in the steering rod 36, and the steering rod 36 is socketed with the extension rod 28. A control tube 2 44 is provided in the extension rod 28. The fixing frame 39 cooperates with the installation cavity 35 to achieve installation, and then the upper rotating rod 36 is disassembled for extension and steering. The fixing frame 1 39 and the steering rod 36 are both connected to the fixing frame 2 45. A guide channel 43 is provided in the fixing frame 39, the steering rod 36 and the extension rod 28. The control tube 1 37 and the control tube 2 44 both control the on-off of the guide channel, and the gas is further transmitted through the guide channel 43.

[0057] The fixing mechanism includes: a rotating sleeve 49, which is arranged on one end of the extension rod 28, and a rotating tube 46 is fixedly connected in the middle. The rotating tube 46 can rotate synchronously with the rotating sleeve 49, and the rotating tube 46 is ventilated. A support tube 48 is sleeved on the rotating sleeve 49, and one end of the support tube is fixedly connected to the support shaft 29. The support tube 48 cooperates with the support shaft 29 for the main support. The extension sleeve 31 is fixedly connected to the support tube 48, and an auxiliary road connected to the support tube 48 is provided inside it. There are multiple balance bars 30, one end of which is fixedly connected to the extension sleeve 31. The extension sleeve 31 is limited. The balance bar 30 penetrates the hub mounting bolts to achieve stable placement of the entire hub. The middle bar 51 is fixedly connected to the extension sleeve 31, and an extrusion road 53 connected to the auxiliary road is provided in the middle of the middle bar 51 to ensure the stability of the guide tube 55. The guide tube 55 is fixedly connected to the middle bar 51. There are multiple guide tubes. The internal sliding sleeve of the guide tube 55 is provided with a limiting tube 52. One side of the limiting tube 52 is fixedly connected to the extrusion road 53. The pressure control tube 56 and the limiting tube 52 are fixedly connected with a spring 54 fixedly connected to the guide tube 55. Under normal circumstances, the guide tube 55 is received in the balance bar 30 by the action of the spring 54. After the air pressure enters, the guide tube 55 is moved through the pressure control tube 56 to limit the periphery of the wheel hub. At the same time, the wheel hub is blown to blow away the debris generated by grinding. A filter sleeve 47 is provided in the support tube 48, and a limiting pin connected to the support tube 48 is provided on the rotating sleeve 49. The filter sleeve 47 performs filtering, and the limiting pin performs necessary fixed limitation. A plurality of trigger blocks 50 are fixedly connected to the extension sleeve 31, and an adsorption limiting ring is connected to the support shaft 29. The cross section of the rotating sleeve 49 adopts an H-shaped structure. The trigger block 50 performs buffering, and the limiting ring performs certain limitations.

[0058] The rotating mechanism includes: a gearbox 17, which is fixedly connected to 21, and its output end is transmission-connected with gear 18, one side of gear 18 is meshedly connected with gear 20 fixedly connected to the transmission shaft 16, the gearbox 17 changes speed and direction, gear 18 transmits torque to gear 20, driving the rotation of the transmission shaft 16, a drive box 19, which is fixedly connected in the transmission frame 21, and the output end is connected to the input end of the gearbox 17, a bogie 24, which is fixedly connected to the transmission shaft 16 and is rotationally connected to the insertion rod 11, guide rollers 26 are rotationally connected on both sides of the bogie 24, and a drive roller 12 is rotationally connected on one side of the bogie 24. The drive roller 12 rotates, and the guide roller 26 performs auxiliary limitation and guidance, a hose 2 33, one end of which is connected to the air guide 10, and the other end is connected to the bogie 24 is fixedly connected to the drive box 2 34, the output end of the drive box 2 34 is connected to the drive roller 12 for transmission, and the hose 2 33 is used to guide the air so that the drive box 2 34 rotates, wherein the drive box 19 and the drive box 2 34 are existing devices, which are provided with paddles inside and can be driven by the fluid to realize rotation, the hose 3 13, one end of which is connected to the drive box 2 34, and the other end is connected to the central box 14 connected to 21, and one side of the central box 14 is connected to the hose 4 connected to the drive box 19, the hose 4 conducts the gas, and then the gas passing through the central box 14 enters 39 through the hose 1 41 to realize gas conduction, the drive ring 25, which is set on the outside of the guide roller 26 and the drive roller 12, and the drive ring 25 rotates with the rotation of the guide roller 12, and can further drive the subsequent wheel hub to rotate.

[0059] The gearbox 17 includes a shell 57 fixedly connected to the transmission frame 21, and a half gear 64 is rotatably connected in the shell 57. The outer wall of the half gear 64 is meshed with a symmetrically arranged rack 1 63, and the rack 1 63 is fixedly connected to a movable frame 58 slidably connected to the shell 57. One side of the movable frame 58 is fixedly connected to a rack 2, and the outer wall of the rack 2 is meshed with a gear 4 59. One side of the gear 4 59 is transmission-connected to a transmission component 1 60, and one end of the transmission component 1 60 is transmission-connected to a transmission device 61. The output end of the transmission device 61 is connected to the gear 1 18. Through external transmission, the half gear 64 is rotated, and further drives the two parallel racks 1 63 to move, and then the movable frame 58 performs periodic back and forth motion, drives the rack 2 to perform back and forth motion, and then the gear 4 59 performs periodic back and forth rotation. After transmission, the gear 1 18 performs periodic back and forth rotation.

[0060] The outer walls of the guide roller 26 and the driving roller 12 are both provided with raised rings, and a recessed groove 27 for accommodating the raised ring is provided in the driving ring 25. The outer wall of the driving ring 25 is provided with a friction ring. Through the raised ring and the recessed groove 27, multiple degrees of freedom can be limited, so that the driving ring 25 can rotate better.

[0061] A motor 2 is provided in the base 1, and the output end of the motor 2 is connected to a transmission component 2 which is connected to the replacement column 5. A backup power supply 3 is provided in the base 1, and a ventilation groove is provided in the replacement column 5. The ventilation groove is connected to the ventilation hole 4 located on the replacement column 5, and a filter block 6 is provided in the ventilation groove. Driven by the motor 2, the replacement column 5 can be rotated, and then the entire device can be rotated to a certain angle, which is convenient for operation. The ventilation hole 4 is used for ventilation, and the filter block 6 performs necessary filtering work.

[0062] The implementation principle of the embodiment of the present application is as follows: when working, select a suitable fixing frame 39, steering rod 36 and extension rod 28, connect and install them in sequence, and insert the fixing frame 39 into the installation cavity 35 to realize installation, and then select a suitable balancing rod 30, connect it to the extension rod 28 through the rotating sleeve 49 to realize the overall installation, and then pass the wheel hub that needs to be polished through the support shaft 29, and at the same time enter the bolt hole of the wheel hub through the support shaft 30 to realize the limitation, and one side of the wheel hub contacts the driving ring 25, and then start the transverse frame 8, so that the external gas enters the hose 2 33 through the transverse frame 10, and pushes the driving box 2 34, so that the driving roller 12 is rotated, and further drives the driving ring 25 to rotate, and through the friction, the wheel hub also rotates synchronously, and the gas passing through the driving ring 34 enters the central box 19 through the protective tube 23 and the central box 14, so that the gearbox 17 The input end rotates, and then the gearbox 17 works to make the gear 18 rotate periodically, and further through the gear 2 20, the gear 2 16 and the bogie 24 realize periodic swing. At this time, driven by the guide roller 26, the driving ring 25 and the fixed frame 38 swing synchronously, that is, the driving ring 25 and the wheel hub swing synchronously, realizing periodic movement in the other direction to adapt to the grinding work. At the same time, the gas passing through the driving ring 19 passes through the hose 141, the fixed frame 39, the control pipe 137, the steering rod 36, the control pipe 144, the extension rod 28, the control pipe 146, and the support pipe 48 and enters the extrusion channel 53. Further air pressure causes the limiting pipe 52 to move, realizing the fixation of the periphery of the wheel hub. After the limiting pipe 52 moves to a certain position, the air pressure breaks through the effect of the limiting valve, overflows through the limiting pipe 52, blows, reduces the effect of grinding dust, and realizes fast, stable and uniform grinding.

[0063] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A vehicle wheel hub grinding fixture, characterized in that: include: A base, wherein a replacement column is rotatably connected in the middle thereof, and a top end of the replacement column is connected to a support mechanism; A rotating mechanism connected to the supporting mechanism for changing the angle; an extension rod connected to the rotating mechanism and having the other end connected to the fixing mechanism; The supporting mechanism comprises: A transverse frame is fixedly connected to the top of the replacement column and has a high-pressure air pump fixedly connected therein; A transverse rod, which is fixedly connected to the transverse frame, and has plug rods fixedly connected to both sides thereof, wherein interconnected air ducts are provided in the transverse rod and the plug rod, and the output end of the high-pressure air pump is connected to the air duct; The transmission frame is fixedly connected to the insertion rod, and a protective tube fixedly connected to the insertion rod is fixedly connected to the upper side of the transmission frame. The protective tube is provided with a rotation groove, and a flexible sleeve fixedly connected to the protective tube is provided in the rotation groove; a transmission shaft, which is located in the protective cylinder and is rotatably connected to the protective cylinder; A fixed frame, which is fixedly connected to the transmission shaft and fixedly connected to the flexible sleeve on both sides, and the two sides of the fixed frame are transmission-connected to a fixing frame 1 located outside the protective tube; The mounting cavity is provided in the fixing frame, and one side of the mounting cavity is connected to a hose 1 connected to the transmission frame; A fixing frame is inserted into the installation cavity and cooperates with the first fixing frame. A steering rod is inserted into the fixing frame, and a first control tube is provided in the steering rod. The steering rod is sleeved with an extension rod, and a second control tube is provided in the extension rod. The fixing mechanism comprises: A rotating sleeve is provided at one end of the extension rod and a rotating tube is fixedly connected in the middle thereof; The support tube is sleeved on the rotating sleeve, and one end of the support tube is fixedly connected to the support shaft; The extension sleeve is fixedly connected to the support tube and has an auxiliary channel in communication with the support tube; A plurality of balancing rods are provided, one end of which is fixedly connected to the extension sleeve; a middle strip, which is fixedly connected to the extension sleeve and has an extrusion channel in the middle thereof, which is in communication with the auxiliary channel; The guide tube is fixedly connected to the middle bar, and there are multiple guide tubes. A limiting tube is provided inside the guide tube for sliding sleeve. One side of the limiting tube is fixedly connected to a pressure control tube connected to the extrusion channel, and one side of the limiting tube is fixedly connected to a spring fixedly connected to the guide tube.

2. The automobile wheel hub grinding fixture according to claim 1, characterized in that: The first fixing frame and the steering rod are both connected to the second fixing frame. A guide channel is provided in the first fixing frame, the steering rod and the extension rod. The first control tube and the second control tube both control the on-off of the guide channel.

3. The automobile wheel hub grinding fixture according to claim 1, characterized in that: A filter sleeve is arranged in the support tube, and a limiting pin connected with the support tube is arranged on the rotating sleeve.

4. The automobile wheel hub grinding fixture according to claim 1, characterized in that: A plurality of trigger blocks are fixedly connected to the extension sleeve, an adsorption limit ring is connected to the support shaft, and the cross section of the rotating sleeve adopts an H-shaped structure.

5. The automobile wheel hub grinding fixture according to claim 1, characterized in that: The rotating mechanism comprises: A gearbox is fixedly connected to the transmission shaft, and its output end is drivingly connected to gear 1, and one side of the gear 1 is meshedly connected to gear 2 fixedly connected to the transmission shaft; Drive box 1, which is fixedly connected to the transmission frame, and the output end is connected to the input end of the gearbox; A bogie, which is fixedly connected to the transmission shaft and rotatably connected to the insertion rod, with guide rollers rotatably connected to both sides of the bogie and a drive roller rotatably connected to one side of the bogie; Hose 2, one end of which is connected to the air guide channel, and the other end of which is connected to drive box 2 fixedly connected to the bogie, and the output end of drive box 2 is transmission-connected to the drive roller; Hose 3, one end of which is connected to drive box 2, and the other end is connected to a central box connected to the first drive box, and one side of the central box is connected to hose 4 connected to drive box 1; The driving ring is sleeved on the outer sides of the guide roller and the driving roller.

6. The automobile wheel hub grinding fixture according to claim 5, characterized in that: The gearbox includes a shell fixedly connected to a transmission frame, a half gear rotatably connected in the shell, an outer wall of the half gear meshingly connected to a symmetrically arranged rack 1, the rack 1 is fixedly connected to a movable frame slidably connected to the shell, one side of the movable frame is fixedly connected to a rack 2, the outer wall of the rack 2 is meshingly connected to a gear 4, one side of the gear 4 is transmission-connected to a transmission assembly 1, one end of the transmission assembly 1 is transmission-connected to a transmission, and the output end of the transmission is connected to gear 1.

7. The automobile wheel hub grinding fixture according to claim 5, characterized in that: The outer walls of the guide roller and the driving roller are both provided with raised rings, a recessed groove for accommodating the raised ring is provided in the driving ring, and a friction ring is provided on the outer wall of the driving ring.

8. The automobile wheel hub grinding fixture according to claim 1, characterized in that: A motor is provided in the base, and the output end of the motor is transmission-connected to a transmission component 2 which is transmission-connected to the replacement column. A backup power supply is provided in the base, and a ventilation groove is provided in the replacement column. The ventilation groove is connected to a ventilation hole located on the replacement column, and a filter block is provided in the ventilation groove.

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