Polishing equipment for surface of automobile reducing rod

Abstract

The invention relates to the field of automobile variable-diameter rods, and discloses polishing equipment for the surface of an automobile variable-diameter rod, the polishing equipment comprises a base and polishing wheels, the polishing wheels are arranged on the base through alternate polishing structures, a discharging structure is arranged on the left side of the base, and storage structures are arranged on the front side and the rear side of the upper portion of the base. The polishing wheel can be driven to move back and forth in the width direction of the base through the alternate polishing structure, meanwhile, the alternate feeding structure can be driven to polish the variable-diameter rods stored on the two storage plates on the storage structure and the polishing position for alternate feeding, the working time is greatly saved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile reducer rods, in particular to a polishing device for the surface of automobile reducer rods. Background Art

[0002] The car reducer is used to prevent the car from rolling over laterally and improve ride comfort. The lateral stabilizer bar is a torsion bar spring made of spring steel. It is "U"-shaped and placed horizontally at the front and rear ends of the car. The middle of the rod body is hinged to the frame with a sleeve. The two ends of the rod are respectively fixed to the lower supporting arms of the left and right suspensions or the shock absorber slide columns to prevent the car body from excessive lateral roll when turning. When processing the car reducer, polishing equipment is needed for polishing.

[0003] In the prior art, the polishing equipment clamps the variable diameter rod to be polished by a clamping structure, and then uses a high-speed rotating polishing wheel to move along the length direction of the variable diameter rod to perform the polishing process of the variable diameter rod;

[0004] However, in the actual polishing process, it is necessary to manually place the reducer rod to be polished on the clamping structure and clamp it, and then polish it. After polishing, it is necessary to loosen the reducer rod to remove the polished reducer rod, which wastes a lot of working time and the work efficiency needs to be improved. Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a polishing device for the surface of an automobile reducer rod.

[0006] The present invention provides a polishing device for the surface of a car reducer rod, which adopts the following technical solution:

[0007] A polishing device for the surface of a car reducer rod comprises a base and a polishing wheel, wherein the base is provided with a polishing wheel through an alternating polishing structure, a material discharge structure is provided on the left side of the base, and storage structures are provided on both the front and rear sides above the base;

[0008] The alternating polishing structure includes a third groove opened in the middle of the base, and both ends of the groove walls on the front and rear sides of the third groove are connected to fixed rods, and a movable frame is movably sleeved on the two fixed rods, and a movable seat is movably arranged in the movable frame, and a first electric telescopic rod is installed on the right side of the movable frame, and one end of the output shaft of the first electric telescopic rod is connected to the movable seat, and a fixed column is connected on the top of the movable seat, and a guide structure is arranged between the fixed column and the movable frame. A first motor is installed above the right side of the fixed column, and a polishing wheel is installed at one end of the output shaft of the first motor, and a shielding cover is arranged at the polishing wheel through a rotation limiting structure, and fixed strips are arranged near both ends of the outer arc surface of the shielding cover, and a cylinder is installed in the middle of the front side of the base, and one end of the cylinder output shaft is connected to the movable frame;

[0009] An alternating feeding structure is provided above the base, and a flipping structure is provided in the middle of the right side of the base;

[0010] The rotation limiting structure comprises fixed blocks arranged on the left and right sides of the shielding cover near both ends. The shielding cover is rotatably connected to the inner wall of the fixing column. Four limiting blocks are respectively arranged on the inner walls on both sides of the fixing column.

[0011] Preferably, the storage structure includes a support frame arranged at the front and rear edges of the base, a storage plate is installed on the support frame, a switching structure is arranged between the two storage plates, the storage plates are arranged on the support frame to tilt downward toward one side of the movable frame, and shielding edges are arranged on the left and right edges of the storage plates, and L-shaped strips are connected to the positions of the base near the two support frames.

[0012] Preferably, the alternating feeding structure includes arc-shaped seats installed on the left and right sides of the base, and a first slide groove is provided on the side surface of the two arc-shaped seats close to each other, a slide bar is slidably provided in the first slide groove, an arc plate is installed on the slide bar, a cross plate is connected between the two ends of the two arc plates, a support plate is provided on the cross plate through a connecting structure, a first groove is provided on the side of the support plate close to the moving frame, a second driving bar is installed on the left side surface of the moving frame, and teeth that are meshed with each other are provided on the upper surface of the second driving bar and on the lower arc surface of the left arc plate.

[0013] Preferably, the connecting structure includes vertical plates arranged on both sides of the horizontal plate, a first rotating shaft rotates through the opening at the top of the vertical plate, a connecting block is fixedly sleeved on the first rotating shaft, the connecting block is connected to the support plate, a limit frame is fixedly sleeved on the bottom end of the vertical plate on the right side, a through slot is opened on the horizontal plate below the vertical plate on the right side, a T-shaped plate is connected to the bottom end of the vertical plate on the right side that is movably inserted into the through slot, a spring is connected between the T-shaped plate and the lower groove wall of the through slot, and a fixing plate is installed at the bottom end of the T-shaped plate.

[0014] Preferably, the material removal structure comprises a collection frame arranged at the left edge of the base, the lower inner wall of the collection frame is inclined toward the middle, and an inclined material removal plate is installed on the collection frame.

[0015] Preferably, the switching structure comprises a U-shaped frame connected to the left side of the two storage plates, a fixing plate is connected to the middle of the lower inner wall of the U-shaped frame, and a second groove is provided on the left side of the fixing plate.

[0016] Preferably, the flip structure includes a second rotating shaft rotatably connected to the middle of the right side surface of the base, a gear is fixedly sleeved on one end of the second rotating shaft, a flip plate is fixedly sleeved on the other end of the second rotating shaft, the flip plate is in an "L" shape, a driving structure is arranged between the second rotating shaft and the movable frame, a tightening rotating structure is arranged on the flip plate, and a limiting seat is installed on the base at the bottom end of the flip plate, and the limiting seat is in a "U" shape.

[0017] Preferably, the driving structure includes a connecting strip connected to the right side surface of the moving frame, and one end of the connecting strip passing through the arc seat is connected to the first driving strip, and the first driving strip is provided with teeth meshing with the gear.

[0018] Preferably, the tightening rotating structure is installed on a second mounting plate at the left end of the inner wall of the flip plate, a second electric telescopic rod is installed on the second mounting plate, a tightening plate is rotatably installed on one end of the output shaft of the second electric telescopic rod, a first mounting plate is installed on the right side of the inner wall of the flip plate, a second motor is installed on the first mounting plate, and a turntable is installed on one end of the output shaft of the second motor.

[0019] Preferably, the guide structure includes a horizontal bar installed above the front of the movable frame, the horizontal bar is provided with a guide groove, an insertion rod is connected to the lower front of the fixed column, the bottom end of the insertion rod is movably inserted into the guide groove, a sliding block is provided on the bottom end of the fixed column, and a second sliding groove for the sliding block to slide is provided on the movable seat.

[0020] In summary, the present invention includes the following beneficial technical effects:

[0021] 1. The present invention is provided with an alternating polishing structure, a storage structure and an alternating feeding structure. The alternating polishing structure can drive the polishing wheel to move back and forth along the width direction of the base. At the same time, the alternating feeding structure is also driven to polish the variable diameter rods stored on the two storage plates on the storage structure at the polishing positions of the alternating feeding, thereby greatly saving working time and improving working efficiency.

[0022] 2. The present invention is provided with a connecting structure and a feeding structure. As the polishing wheel on the alternating polishing structure alternately switches the polishing position, the polished variable diameter rod can be automatically fed into the feeding structure through the connecting structure for feeding, thereby further making rational use of working time and improving work efficiency.

[0023] 3. The present invention is provided with a flipping structure, a driving structure and a pressing and rotating structure, so that when the movable frame on the alternating polishing structure moves back and forth, the pressing and rotating structure can be automatically switched to the polishing position through the driving structure and the flipping structure, and the diameter-changing rod is pressed and rotated for polishing. In this way, the pressing and rotating structure can be freely switched to two polishing positions to perform polishing work, which reduces the manufacturing cost and improves the work efficiency;

[0024] 4. The present invention is provided with a shielding cover, a rotation limit structure and a switching structure, so that the movable frame can automatically switch the position of the shielding cover during the movement, so that the shielding cover can shield the debris generated during the polishing process at both polishing positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a polishing device for the surface of a car reducer rod in an embodiment of the present invention;

[0026] Figure 2 In the embodiment of the present invention Figure 1 A magnified view of the structure at A;

[0027] Figure 3 This is a schematic diagram of the structure of the base after the loading and unloading structure is disassembled in the embodiment of the present invention;

[0028] Figure 4 is a schematic structural diagram of an alternating polishing structure in an embodiment of the present invention;

[0029] Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure at B;

[0030] Figure 6 It is a schematic diagram of the structure of the horizontal plate in an embodiment of the present invention;

[0031] Figure 7 In the embodiment of the present invention Figure 6 A magnified view of the structure at C;

[0032] Figure 8 Schematic diagram of the structure of the flip plate in the embodiment of the present invention.

[0033] Explanation of the reference numerals: 1. base; 2. third groove; 3. fixing rod; 4. cylinder; 5. moving frame; 6. moving seat; 7. first electric telescopic rod; 8. fixing column; 9. first motor; 10. polishing wheel; 11. shielding cover; 12. support frame; 13. storage plate; 14. arc seat; 15. slide bar; 16. arc plate; 17. horizontal plate; 18. support plate; 19. first groove; 20. L-shaped bar; 21. vertical plate; 22. first rotating shaft; 23. connecting block; 24. T-shaped plate; 25. limit frame; 26. through groove; 27. fixing plate; 28. spring ; 29. ​​unloading plate; 30. collecting frame; 31. fixing bar; 32. fixing block; 33. limiting block; 34. fixing plate; 35. second groove; 36. U-shaped frame; 37. second rotating shaft; 38. flip plate; 39. limiting seat; 40. gear; 41. first driving bar; 42. connecting bar; 43. second driving bar; 44. first mounting plate; 45. second motor; 46. turntable; 47. second electric telescopic rod; 48. tightening plate; 49. second mounting plate; 50. second slide groove; 51. slider; 52. plug rod; 53. horizontal bar; 54. guide groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0035] Reference Figure 1-Figure 8 The embodiment of the present invention discloses a polishing device for the surface of a car reducer rod, comprising a base 1 and a polishing wheel 10, the base 1 is provided with the polishing wheel 10 through an alternating polishing structure, a material discharge structure is provided on the left side of the base 1, and storage structures are provided on both the front and rear sides above the base 1;

[0036] The alternating polishing structure includes a third groove 2 opened in the middle of the base 1, and fixed rods 3 are connected to both ends of the groove walls on the front and rear sides of the third groove 2. A moving frame 5 is movably sleeved on the two fixed rods 3, and a moving seat 6 is movably arranged in the moving frame 5. A first electric telescopic rod 7 is installed on the right side of the moving frame 5, and one end of the output shaft of the first electric telescopic rod 7 is connected to the moving seat 6. A fixed column 8 is connected on the top of the moving seat 6, and a guide structure is arranged between the fixed column 8 and the moving frame 5. A first motor 9 is installed above the right side of the fixed column 8, and a polishing wheel 10 is installed at one end of the output shaft of the first motor 9. A shielding cover 11 is arranged at the polishing wheel 10 through a rotation limiting structure, and a fixing strip 31 is arranged near both ends of the outer arc surface of the shielding cover 11. A cylinder 4 is installed in the middle of the front of the base 1, and one end of the output shaft of the cylinder 4 is connected to the moving frame 5;

[0037] An alternating feeding structure is provided above the base 1, and a flipping structure is provided in the middle of the right side of the base 1;

[0038] The rotation limiting structure includes fixed blocks 32 arranged near both ends of the left and right sides of the shielding cover 11. The shielding cover 11 is rotatably connected to the inner wall of the fixed column 8. Four limiting blocks 33 are respectively arranged on the inner walls of both sides of the fixed column 8.

[0039] The guide structure includes a horizontal bar 53 installed on the upper front of the moving frame 5, and a guide groove 54 is provided on the horizontal bar 53. The lower front of the fixed column 8 is connected to the plug rod 52, and the bottom end of the plug rod 52 is movably inserted into the guide groove 54. A slider 51 is provided on the bottom end of the fixed column 8, and a second slide groove 50 for the slider 51 to slide is provided on the moving seat 6. When the moving frame 5 is in the front polishing position on the base 1, the first motor 9 is started to drive the polishing wheel 10 to rotate, and the first electric telescopic rod 7 is started to drive the moving seat 6 to move to the right in the moving frame 5. The rotating polishing wheel 10 is used to move close to the outer surface of the variable diameter rod to polish the variable diameter rod, and the moving seat 6 drives the plug rod during the movement. One end of 52 slides in the guide groove 54, and the sliding block 51 slides in the second slide groove 50, driving the polishing wheel 10 to move along the width direction of the movable frame 5, so that different outer diameter positions on the variable diameter rod can be polished, so that the polishing of the variable diameter rod is more thorough. After polishing the variable diameter rod at the front polishing position, the first electric telescopic rod 7 drives the movable seat 6 to move in the opposite direction in the movable frame 5 for reset, and then the cylinder 4 is started to drive the movable frame 5 to move toward the rear side on the fixed rod 3, and the movable frame 5 is moved to the rear polishing position on the base 1, so that while the variable diameter rod at the front polishing position is unloading, the polishing wheel 10 can continue to polish the variable diameter rod at the rear polishing position, which greatly saves working time and improves working efficiency.

[0040] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The storage structure includes a support frame 12 arranged at the front and rear edges of the base 1, a storage plate 13 is installed on the support frame 12, a switching structure is arranged between the two storage plates 13, the storage plate 13 is arranged on the support frame 12 to tilt downward toward the side of the moving frame 5, and shielding edges are arranged on the left and right edges of the storage plate 13. L-shaped strips 20 are connected to the positions of the base 1 near the two support frames 12;

[0041] The alternating feeding structure includes an arc seat 14 installed on the left and right sides of the base 1, and a first slide groove is provided on the side surface of the two arc seats 14 close to each other, a slide bar 15 is slidably provided in the first slide groove, and an arc plate 16 is installed on the slide bar 15, and a cross plate 17 is connected between the two ends of the two arc plates 16, and a support plate 18 is provided on the cross plate 17 through a connecting structure, and a first groove 19 is provided on the side of the support plate 18 close to the moving frame 5, and a second driving bar 43 is installed on the left side surface of the moving frame 5, and teeth that mesh with each other are provided on the second driving bar 43 and on the lower arc surface of the left arc plate 16;

[0042] The connection structure includes vertical plates 21 arranged on both sides of the horizontal plate 17, the first rotating shaft 22 is rotated through the opening at the top of the vertical plate 21, a connecting block 23 is fixedly sleeved on the first rotating shaft 22, and the connecting block 23 is connected to the supporting plate 18. A limit frame 25 is fixedly sleeved on the bottom end of the right vertical plate 21, and a through groove 26 is opened on the horizontal plate 17 below the right vertical plate 21. A T-shaped plate 24 is connected to the bottom end of the right vertical plate 21 that is movably inserted into the through groove 26, a spring 28 is connected between the T-shaped plate 24 and the lower groove wall of the through groove 26, and a fixing plate 27 is installed at the bottom end of the T-shaped plate 24;

[0043] The material discharge structure includes a collection frame 30 disposed on the left edge of the base 1, the lower inner wall of the collection frame 30 is inclined toward the middle, and an inclined material discharge plate 29 is installed on the collection frame 30;

[0044] The switching structure includes a U-shaped frame 36 connected to the left side of the two storage plates 13, a fixed plate 34 is connected to the middle of the lower inner wall of the U-shaped frame 36, and a second groove 35 is opened on the left side of the fixed plate 34. When the movable frame 5 moves toward the rear polishing position, the second driving bar 43 drives the arc plate 16 and the slide bar 15 to rotate as a whole in the arc seat 14, so that the cross plate 17, the supporting plate 18 and the reducing rod at the front polishing position move as a whole toward the front storage plate 13. When the cross plate 17 moves down to the storage plate 13, the edge of one end of the fixed plate 27 on the T-shaped plate 24 is tightly attached to the L-shaped bar 20. As the arc plate 16 continues to rotate, the L-shaped bar 20 pushes the fixed plate 27 and the T-shaped plate 24 to move upward as a whole, thereby driving the supporting plate 18 to tilt downward toward the blanking plate 29. The polished reducer rod on the support plate 18 is poured down onto the unloading plate 29, and the unloading plate 29 is used to unload the reducer rod into the collection frame 30 for collection. Since the lower inner wall of the collection frame 30 is tilted downward toward the middle, the reducer rod unloaded and loaded by the unloading plate 29 can be better collected in the collection frame 30. During the rotation of the arc plate 16, the rear side cross plate 17 on the arc plate 16 moves upward, and the reducer rod on the rear storage plate 13 is lifted by the support plate 18, and the reducer rod is lifted to the rear polishing position, so that the polishing wheel 10 moving toward the rear side can smoothly polish the reducer rod at the rear polishing position, and the upward movement of the rear side cross plate 17 will drive the arc plate 16 to block the reducer rod stored on the rear storage plate 13, so as to avoid the problem of the reducer rod on the storage plate 13 falling off during the lifting and loading process.

[0045] See also Figure 1 , Figure 2 and Figure 8 The flip structure includes a second rotating shaft 37 rotatably connected to the middle of the right side of the base 1, a gear 40 is fixedly sleeved on one end of the second rotating shaft 37, and a flip plate 38 is fixedly sleeved on the other end of the second rotating shaft 37. The flip plate 38 is in an "L" shape. A driving structure is provided between the second rotating shaft 37 and the moving frame 5, and a tight rotation structure is provided on the flip plate 38. A limited seat 39 is installed on the base 1 at the bottom end of the flip plate 38, and the limited seat 39 is in a "U" shape;

[0046] The driving structure includes a connecting strip 42 connected to the right side of the moving frame 5, and one end of the connecting strip 42 passing through the arc seat 14 is connected to the first driving strip 41, and the first driving strip 41 is provided with teeth meshing with the gear 40;

[0047] The tight rotating structure is mounted on a second mounting plate 49 at the left end of the inner wall of the flip plate 38, a second electric telescopic rod 47 is mounted on the second mounting plate 49, a tight disc 48 is rotatably mounted on one end of the output shaft of the second electric telescopic rod 47, a first mounting plate 44 is mounted on the right side of the inner wall of the flip plate 38, a second motor 45 is mounted on the first mounting plate 44, a turntable 46 is mounted on one end of the output shaft of the second motor 45, and the moving frame 5 drives the first driving bar 41 at one end of the connecting bar 42 to move during the movement, and drives the flip plate 38 through the gear 40. The rotating plate 38 rotates, thereby rotating the flip plate 38 to the corresponding polishing position. In this way, when the second electric telescopic rod 47 on the second mounting plate 49 is started, the clamping plate 48 can be driven to move, and the supported reducing rod can be clamped between the clamping plate 48 and the rotating plate 46 for fixing. In the polishing process, the second motor 45 is started to drive the rotating plate 46 to rotate. Through the static friction between the rotating plate 46 and the end of the reducing rod, the reducing rod and the clamping plate 48 are driven to rotate as a whole, so that the polishing wheel 10 can polish various positions on the reducing rod.

[0048] The implementation principle of a polishing device for the surface of a car variable diameter rod according to an embodiment of the present invention is as follows: first, the polishing rods to be polished are divided into two groups and stored on two storage plates 13 respectively, and a variable diameter rod on the rear storage plate 13 closest to the moving frame 5 rolls down from the storage plate 13 to the rear support plate 18, at which time the front support plate 18 is in the front polishing position, the first motor 9 is started to drive the polishing wheel 10 to rotate, and at the same time, the first electric telescopic rod 7 is started to drive the moving seat 6 to move to the right in the moving frame 5, and the rotating polishing wheel 10 is used to move close to the outer surface of the variable diameter rod to polish the variable diameter rod, and During the movement of the movable seat 6, one end of the insertion rod 52 is driven to slide in the guide groove 54, and the sliding block 51 slides in the second slide groove 50, driving the polishing wheel 10 to move along the width direction of the movable frame 5, so that different outer diameter positions on the variable diameter rod are polished, so that the polishing of the variable diameter rod is more thorough. After the variable diameter rod is polished at the front polishing position, the first electric telescopic rod 7 drives the movable seat 6 to move in the opposite direction in the movable frame 5 to reset, and then the cylinder 4 is started to drive the movable frame 5 to move toward the rear side on the fixed rod 3, and the movable frame 5 is moved to the rear polishing position on the base 1. During the movement of the movable frame 5, The corresponding fixed strip 31 on the shielding cover 11 is squeezed onto the fixed plate 34. As the moving frame 5 continues to move, the fixed plate 34 pushes the fixed strip 31, driving the shielding cover 11 to rotate on the fixed column 8. After the rotation, the corresponding fixed block 32 on the shielding cover 11 is supported to the corresponding limit block 33, thereby automatically switching the shielding position of the shielding cover 11 on the fixed column 8. In addition, when the moving frame 5 is polishing toward the rear side, the second driving strip 43 drives the arc plate 16 and the slide bar 15 to rotate as a whole in the arc seat 14, so that the cross plate 17, the support plate 18 and the reducer at the front polishing position are moved closer as a whole. The front storage plate 13 moves, and when the horizontal plate 17 moves down to the storage plate 13, the edge of one end of the fixing plate 27 on the T-shaped plate 24 is pressed against the L-shaped strip 20. As the arc plate 16 continues to rotate, the L-shaped strip 20 pushes the fixing plate 27 and the T-shaped plate 24 to move upward as a whole, thereby driving the support plate 18 to tilt downward toward the blanking plate 29, and the polished reducing rod on the support plate 18 is poured onto the blanking plate 29, and the blanking plate 29 is used to discharge the material to the collection frame 30 for collection. Since the lower inner wall of the collection frame 30 is tilted downward toward the middle, the reducing rod loaded and unloaded by the blanking plate 29 can be better collected in the collection frame 30;During the rotation of the arc plate 16, the rear side horizontal plate 17 on the arc plate 16 moves upward, and the diameter-changing rod on the rear storage plate 13 is lifted by the supporting plate 18, and the diameter-changing rod is lifted to the rear polishing position, so that the polishing wheel 10 moving toward the rear side can smoothly polish the diameter-changing rod at the rear polishing position, and the upward movement of the rear side horizontal plate 17 will drive the arc plate 16 to block the diameter-changing rod stored on the rear storage plate 13, so as to avoid the problem of the diameter-changing rod on the storage plate 13 falling off during the lifting and loading process. At the same time, the moving frame 5 drives the first driving bar 41 at one end of the connecting bar 42 to move, and the gear 10 drives the first driving bar 41 at one end of the connecting bar 42 to move. The wheel 40 drives the flip plate 38 to rotate, and rotates the flip plate 38 to the rear polishing position. In this way, when the second electric telescopic rod 47 on the second mounting plate 49 is started, the abutting plate 48 can be driven to move, and the supported variable diameter rod is clamped between the abutting plate 48 and the rotating plate 46 for fixing. In the polishing process, the second motor 45 is started to drive the rotating plate 46 to rotate, and the static friction between the rotating plate 46 and the end of the variable diameter rod drives the variable diameter rod and the abutting plate 48 to rotate as a whole, so that the polishing wheel 10 can polish various positions on the variable diameter rod, so that the polishing work can be realized, and the work efficiency is also higher. ;

[0049] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A polishing device for the surface of a car reducer rod, comprising a base (1) and a polishing wheel (10), characterized in that: The base (1) is provided with a polishing wheel (10) via an alternating polishing structure, a material discharge structure is provided on the left side of the base (1), and storage structures are provided on both the front and rear sides of the top of the base (1); The alternating polishing structure comprises a third groove (2) provided in the middle of the upper surface of the base (1), both ends of the groove walls on the front and rear sides of the third groove (2) are connected to fixed rods (3), a movable frame (5) is movably sleeved on the two fixed rods (3), a movable seat (6) is movably arranged in the movable frame (5), a first electric telescopic rod (7) is installed on the right side surface of the movable frame (5), one end of the output shaft of the first electric telescopic rod (7) is connected to the movable seat (6), and a fixed column (8) is connected to the upper surface of the movable seat (6). A guide structure is provided between the fixed column (8) and the movable frame (5); a first motor (9) is installed above the right side of the fixed column (8); a polishing wheel (10) is installed at one end of the output shaft of the first motor (9); a shielding cover (11) is provided at the polishing wheel (10) through a rotation limiting structure; fixing strips (31) are provided near both ends of the outer arc surface of the shielding cover (11); a cylinder (4) is installed in the middle of the front side of the base (1); one end of the output shaft of the cylinder (4) is connected to the movable frame (5); An alternating feeding structure is provided above the base (1), and a flipping structure is provided in the middle of the right side of the base (1); The rotation limiting structure comprises fixed blocks (32) arranged on the left and right side surfaces of the shielding cover (11) near both ends, the shielding cover (11) is rotatably connected to the inner wall of the fixing column (8), and four limiting blocks (33) are respectively arranged on the inner walls on both sides of the fixing column (8).

2. The polishing device for the surface of a car reducer according to claim 1, characterized in that: The storage structure comprises a support frame (12) arranged at the front and rear edges of the base (1); a storage plate (13) is mounted on the support frame (12); a switching structure is arranged between the two storage plates (13); the storage plates (13) are arranged on the support frame (12) to be tilted downward toward one side of the movable frame (5); shielding edges are arranged at the left and right edges of the storage plates (13); and L-shaped strips (20) are connected to the base (1) at positions close to the two support frames (12).

3. The polishing device for the surface of a car reducer according to claim 1, characterized in that: The alternating feeding structure comprises an arc seat (14) mounted on the left and right sides of the base (1); a first slide groove is provided on the side surface of the two arc seats (14) close to each other; a slide bar (15) is slidably provided in the first slide groove; an arc plate (16) is installed on the slide bar (15); a transverse plate (17) is connected between the two ends of the two arc plates (16); a support plate (18) is provided on the transverse plate (17) through a connecting structure; a first groove (19) is provided on the side of the support plate (18) close to the moving frame (5); a second driving bar (43) is installed on the left side surface of the moving frame (5); teeth that are meshed with each other are provided on the upper side of the second driving bar (43) and on the lower arc surface of the left arc plate (16).

4. The polishing device for the surface of a car reducer according to claim 3, characterized in that: The connection structure comprises vertical plates (21) arranged on both sides of the upper side of the horizontal plate (17); a first rotating shaft (22) is rotatably passed through the top opening of the vertical plate (21); a connecting block (23) is fixedly sleeved on the first rotating shaft (22); the connecting block (23) is connected to the supporting plate (18); a limit frame (25) is fixedly sleeved on the bottom end of the vertical plate (21) on the right side; a through slot (26) is provided on the horizontal plate (17) below the vertical plate (21) on the right side; a T-shaped plate (24) is connected to the bottom end of the vertical plate (21) on the right side that is movably inserted into the through slot (26); a spring (28) is connected between the T-shaped plate (24) and the lower slot wall of the through slot (26); and a fixing plate (27) is installed at the bottom end of the T-shaped plate (24).

5. The polishing device for the surface of a car reducer according to claim 1, characterized in that: The material discharge structure comprises a collection frame (30) arranged at the left edge of the upper side of the base (1); the lower inner wall of the collection frame (30) is arranged to be inclined toward the middle; and an inclined material discharge plate (29) is installed on the collection frame (30).

6. The polishing device for the surface of a car reducer according to claim 2, characterized in that: The switching structure comprises a U-shaped frame (36) connected to the left side of the two storage plates (13), a fixing plate (34) is connected to the middle of the lower inner wall of the U-shaped frame (36), and a second groove (35) is provided on the left side of the upper side of the fixing plate (34).

7. The polishing device for the surface of a car reducer according to claim 1, characterized in that: The flip structure comprises a second rotating shaft (37) rotatably connected to the middle of the right side of the base (1); a gear (40) is fixedly sleeved on one end of the second rotating shaft (37); a flip plate (38) is fixedly sleeved on the other end of the second rotating shaft (37); the flip plate (38) is in an "L" shape; a driving structure is provided between the second rotating shaft (37) and the movable frame (5); a tight rotation structure is provided on the flip plate (38); a limit seat (39) is installed on the base (1) at the bottom end of the flip plate (38); the limit seat (39) is in a "U" shape.

8. The polishing device for the surface of a car reducer according to claim 7, characterized in that: The driving structure comprises a connecting strip (42) connected to the right side surface of the moving frame (5); one end of the connecting strip (42) passing through the arc seat (14) is connected to a first driving strip (41); and the first driving strip (41) is provided with teeth meshing with the gear (40).

9. The polishing device for the surface of a car reducer according to claim 7, characterized in that: The abutting rotating structure is mounted on a second mounting plate (49) at the left end of the upper inner wall of the flip plate (38); a second electric telescopic rod (47) is mounted on the second mounting plate (49); a holding plate (48) is rotatably mounted on one end of an output shaft of the second electric telescopic rod (47); a first mounting plate (44) is mounted on the right side of the upper inner wall of the flip plate (38); a second motor (45) is mounted on the first mounting plate (44); and a rotating plate (46) is mounted on one end of an output shaft of the second motor (45).

10. The polishing device for the surface of a car reducer according to claim 1, characterized in that: The guide structure comprises a horizontal bar (53) installed above the front face of the movable frame (5), the horizontal bar (53) being provided with a guide groove (54), an insertion rod (52) being connected to the lower front face of the fixed column (8), the bottom end of the insertion rod (52) being movably inserted into the guide groove (54), a sliding block (51) being provided at the bottom end of the fixed column (8), and a second sliding groove (50) for the sliding block (51) to slide is provided on the movable seat (6).

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