Spacing-adjustable Akron abrasion sample grinding clamp

Abstract

The invention discloses a spacing-adjustable Akron abrasion sample grinding clamp, and relates to the technical field of rubber testing, the spacing-adjustable Akron abrasion sample grinding clamp comprises a bottom plate, first T-shaped rails are fixedly connected to the two sides of the upper end face of the bottom plate, a sliding table is slidably connected between the two first T-shaped rails, and a moving assembly used for driving the sliding table to slide on the first T-shaped rails is arranged on the bottom plate; supporting vertical plates are fixedly connected to the two sides of the upper end face of the sliding table, and adjusting tables are rotationally connected to the upper ends of the supporting vertical plates. Through the arranged distance adjusting assembly, the distance can be adjusted according to the hardness degree of a rubber sample, it is guaranteed that the long-strip-shaped rubber sample can be firmly clamped and does not fall off, by means of the clamp, the sample grinding time can be remarkably shortened, the integrity and consistency of the sample are kept, and the potential safety hazard that fingers are abraded is eliminated. And meanwhile, the design of the clamp also considers the convenience of operation, so that even non-professional personnel can easily operate the clamp.

Description

Technical Field

[0001] The invention relates to the technical field of rubber testing, in particular to an Akron abrasion sample grinding fixture with adjustable spacing. Background Art

[0002] The wear resistance of tires has always been a performance indicator that tire technicians, automobile factory technicians and performance testers focus on. The Akron abrasion test is a relatively important method for testing the wear resistance of rubber.

[0003] Currently, the most commonly used method for testing the wear resistance of vulcanized rubber is GB / T 1689, "Determination of the wear resistance of vulcanized rubber (using an Akron abrader)". Before the Akron abrasion test, the surface of the long strip of specimen must be roughened and then glued to the annular sample wheel. However, this method makes the sample prone to slipping during the grinding process, and there is also a safety hazard of abrading fingers.

[0004] To this end, we provide the adjustable spacing Akron abrasion specimen grinding fixture to overcome the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide an adjustable-distance Akron abrasion specimen grinding fixture to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An adjustable spacing Akron abrasion specimen grinding fixture comprises a base plate, first T-shaped rails are fixedly connected to both sides of the upper end surface of the base plate, a slide is slidably connected between the two first T-shaped rails, and a moving component is provided on the base plate for driving the slide to slide on the first T-shaped rails;

[0008] Both sides of the upper end surface of the slide are fixedly connected to support vertical plates, the upper ends of the support vertical plates are rotatably connected to the adjustment platform, and an angle adjustment component for adjusting the angle of the adjustment platform is provided between the two support vertical plates;

[0009] A mounting plate is provided above the adjustment platform, and second T-shaped rails are fixedly connected to both sides of the lower end surface of the mounting plate. The two second T-shaped rails are slidably connected to the adjustment platform, and a driving component for driving the mounting plate to perform reciprocating motion is provided on the adjustment platform;

[0010] A first sample clamp is fixedly connected to one side of the upper end surface of the mounting plate, and side sliding grooves are provided at both ends of the mounting plate. A second sample clamp is also slidably connected to the mounting plate, and side sliders are fixedly connected to both ends of the second sample clamp, and the side sliders are slidably connected to the side sliding grooves. A distance adjustment component for adjusting the distance between the second sample clamp and the first sample clamp is also provided on the mounting plate.

[0011] As a further solution of the present invention: the moving component includes a first threaded rod, which is rotatably connected to the middle of the end surface of the base plate by a support, the first threaded rod is threadedly connected to the slide, and a first handle is installed on the connecting shaft head at one end of the first threaded rod.

[0012] As a further solution of the present invention: the angle adjustment assembly includes a limiting side rail, which is fixedly connected to the opposite side of the two supporting vertical plates, and a lifting block is slidably connected between the two limiting side rails. A horizontal plate is fixedly connected between the two ends of the two supporting vertical plates, and a second threaded rod is rotatably connected between the two horizontal plates. The second threaded rod is threadedly connected to the lifting block, and both ends of the lifting block are rotatably connected to adjustment arms, and the ends of the two adjustment arms away from the lifting block are rotatably connected to the lower end surface of the adjustment platform, and a rotating assembly for driving the second threaded rod to rotate is provided on one side of the slide.

[0013] As a further solution of the present invention: the rotating assembly includes a rotating shaft, which is rotatably connected to the lower end of the supporting vertical plate on one side, and the rotating shaft and the opposite end of the second threaded rod are fixedly connected to a bevel gear, the two bevel gears are engaged with each other, and the end of the rotating shaft away from the bevel gear is fixedly connected to the second handle.

[0014] As a further solution of the present invention: the driving assembly includes a bottom frame, which is fixedly connected to the end of the lower end surface of the adjusting table away from the supporting vertical plate, and a driving motor is installed in the middle of the lower end surface of the bottom frame, and the output end of the driving motor is fixedly connected to a rotating disk, and a connecting rod is rotatably connected to the edge of the upper end surface of the rotating disk, and the end of the connecting rod away from the rotating disk is rotatably connected to the mounting plate, and the bottom frame is also provided with a locking assembly for locking the rotating disk.

[0015] As a further solution of the present invention: the locking assembly includes a mounting shell, which is fixedly connected to the bottom frame at a position on one side of the rotating disk, an iron slider is slidably connected inside the mounting shell, one end of the iron slider is fixedly connected to a locking pin, the locking pin is slidably connected to the mounting shell, a spring is installed between the iron slider and the internal end surface of the mounting shell, an electromagnet is installed in the middle of a side of the mounting shell away from the rotating disk, and a plurality of locking holes are opened on the circumference of the rotating disk.

[0016] As a further solution of the present invention: the distance adjustment assembly includes a third threaded rod, and the third threaded rod is fixedly connected to the positions on both sides of the second sample clamping plate respectively; a side baffle is fixedly connected to the side of the upper end surface of the mounting plate away from the first sample clamping plate; a mounting cover is fixedly connected to the side of the side baffle away from the first sample clamping plate; a pushing assembly for pushing the third threaded rod to move is provided in the mounting cover.

[0017] As a further solution of the present invention: the pushing assembly includes a threaded sleeve, which is rotatably connected between the side baffle and the two ends of the mounting cover, and the threaded sleeve is threadedly connected to the third threaded rod respectively. The threaded sleeve is fixedly connected to the second synchronous pulley, and the middle of the lower end of the side baffle is also rotatably connected to the first synchronous pulley. The third handle is fixedly connected to the connecting shaft of the first synchronous pulley, and a synchronous belt is installed between the second synchronous pulley and the first synchronous pulley.

[0018] As a further solution of the present invention: the side baffles are located on both sides of the first synchronous pulley and are provided with auxiliary guide wheels for limiting the synchronous belt.

[0019] As a further solution of the present invention: both ends of the two side edges of the bottom plate are fixedly connected with mounting seats.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses a distance adjustment component to adjust the spacing according to the hardness of the rubber sample, ensuring that the long rubber sample is firmly clamped and does not fall off. Using this clamp significantly reduces sample grinding time, maintains sample integrity and consistency, and eliminates the safety risk of finger abrasions. The clamp is also designed for ease of operation, making it easy for even non-professionals to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the bottom structure of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the rotating component in the present invention.

[0025] Figure 4 It is a structural schematic diagram of the bottom frame in the present invention.

[0026] Figure 5 Schematic diagram of the structure of the synchronous belt in the present invention.

[0027] Figure 6 Schematic diagram of the internal structure of the mounting shell in the present invention.

[0028] Wherein: 1. Base plate; 2. First threaded rod; 3. Second threaded rod; 4. Lifting block; 5. Side slide; 6. Side slide groove; 7. Mounting plate; 8. First specimen clamping plate; 9. Mounting cover; 10. Second specimen clamping plate; 11. Third threaded rod; 12. Third handle; 13. First handle; 14. Locking hole; 15. First T-shaped rail; 16. Slide; 17. Support plate; 18. Second handle; 19. Drive motor; 20. , bottom frame; 21, second T-shaped rail; 22, connecting rod; 23, adjusting arm; 24, rotating disk; 25, mounting shell; 26, side baffle; 27, threaded sleeve; 28, synchronous belt; 29, first synchronous pulley; 30, auxiliary guide wheel; 31, second synchronous pulley; 32, locking pin; 33, iron slider; 34, spring; 35, electromagnet; 36, adjusting table; 37, rotating shaft; 38, bevel gear; 39, limiting side rail. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-6 In an embodiment of the present invention, an adjustable-spacing Akron abrasion specimen grinding fixture comprises a base plate 1, both ends of both sides of the base plate 1 are fixedly connected to a mounting seat, and both sides of the upper end surface of the base plate 1 are fixedly connected to a first T-shaped rail 15, and a slide 16 is slidably connected between the two first T-shaped rails 15, and the base plate 1 is provided with a moving component for driving the slide 16 to slide on the first T-shaped rail 15; the moving component comprises a first threaded rod 2, the first threaded rod 2 is rotatably connected to the middle position of the upper end surface of the base plate 1 by a support, the first threaded rod 2 is threadedly connected to the slide 16, and a first handle 13 is installed on the connecting shaft head at one end of the first threaded rod 2; when the position of the slide 16 needs to be moved, the first handle 13 is rotated, and the rotation of the first handle 13 can drive the first threaded rod 2 to rotate, and the rotation of the first threaded rod 2 can drive the slide 16 to move along the first T-shaped rail 15, so that the distance between the sample and the grinding device can be adjusted as needed during use, thereby controlling the contact and separation of the sample and the grinding device.

[0031] Both sides of the upper end surface of the slide 16 are fixedly connected to the support vertical plates 17, and the upper ends of the support vertical plates 17 are rotatably connected to the adjustment platform 36, and an angle adjustment component for adjusting the angle of the adjustment platform 36 is provided between the two support vertical plates 17; the angle adjustment component includes a limiting side rail 39, and the limiting side rail 39 is fixedly connected to the opposite side of the two support vertical plates 17, and a lifting block 4 is slidably connected between the two limiting side rails 39, and a cross plate is fixedly connected between the two ends of the two support vertical plates 17, and a second threaded rod 3 is rotatably connected between the two cross plates, and the second threaded rod 3 is threadedly connected to the lifting block 4. Both ends of the lifting block 4 are rotatably connected to the adjusting arm 23, and the ends of the two adjusting arms 23 away from the lifting block 4 are rotatably connected to the lower end surface of the adjusting platform 36. A rotating component for driving the second threaded rod 3 to rotate is provided on one side of the slide 16; The rotating assembly includes a rotating shaft 37, which is rotatably connected to the lower end of the supporting vertical plate 17 on one side. The rotating shaft 37 and the opposite end of the second threaded rod 3 are fixedly connected to a bevel gear 38, and the two bevel gears 38 mesh with each other. The end of the rotating shaft 37 away from the bevel gear 38 is fixedly connected to the second handle 18; when the angle of the mounting plate 7 needs to be adjusted, the rotating shaft 37 can be rotated by the second handle 18, and the rotation of the rotating shaft 37 can drive the bevel gear 38 to rotate. The engagement of the two bevel gears 38 can drive the second threaded rod 3 to rotate. The rotation of the second threaded rod 3 can drive the lifting block 4 to rise and fall. The lifting of the lifting block 4 can drive the adjusting arm 23 to perform corresponding movement. The movement of the adjusting arm 23 can drive the mounting plate 7 to perform corresponding angle adjustment, so that the sample can be polished at different angles as needed during use.

[0032] A mounting plate 7 is provided above the adjusting platform 36, and second T-shaped rails 21 are fixedly connected to both sides of the lower end surface of the mounting plate 7. The two second T-shaped rails 21 are slidably connected to the adjusting platform 36. A driving assembly for driving the mounting plate 7 to reciprocate is provided on the adjusting platform 36; the driving assembly includes a bottom frame 20, which is fixedly connected to the end of the lower end surface of the adjusting platform 36 away from the supporting vertical plate 17, and a driving motor 19 is installed in the middle of the lower end surface of the bottom frame 20. The output end of the driving motor 19 is fixedly connected to a rotating disk 24, and the edge of the upper end surface of the rotating disk 24 is rotatably connected to a connecting rod 22, and the connecting rod 22 One end away from the rotating disk 24 is rotatably connected to the mounting plate 7, and a locking assembly for locking the rotating disk 24 is also provided on the bottom frame 20; during operation, the drive motor 19 is started, and before the drive motor 19 is driven, the electromagnet 35 is first electrically started to pull the locking pin 32 out of the locking hole 14, and then the drive motor 19 drives the rotating disk 24 to rotate. The rotation of the rotating disk 24 can drive the connecting rod 22 to move, and the movement of the connecting rod 22 can drive the mounting plate 7 to reciprocate. The reciprocating motion of the mounting plate 7 can expand the grinding area of ​​the sample, so that the grinding form can be selected according to actual needs during use.

[0033] The locking assembly includes a mounting shell 25, which is fixedly connected to the bottom frame 20 at a position on one side of the rotating disk 24. An iron slider 33 is slidably connected to the mounting shell 25, and one end of the iron slider 33 is fixedly connected to a locking pin 32. The locking pin 32 is slidably connected to the mounting shell 25. A spring 34 is installed between the iron slider 33 and the inner end surface of the mounting shell 25. An electromagnet 35 is installed in the middle of the side of the mounting shell 25 away from the rotating disk 24. A plurality of locking holes 14 are opened on the circumference of the rotating disk 24; when not in use, the locking pin 32 is fixedly connected to the mounting shell 25. When the mounting plate 7 needs to move, the electromagnet 35 can be turned off, and the iron slider 33 will push the locking pin 32 to move under the action of the spring 34. The locking pin 32 will be inserted into the locking hole 14 to lock the rotating disk 24. If the locking pin 32 is not facing the locking hole 14, the mounting plate 7 can be pushed to move to rotate the rotating disk 24. When the rotating disk 24 rotates, the locking pin 32 will slide on the surface of the rotating disk 24 under the action of the spring 34, and then be inserted into the locking hole 14 to achieve locking. After the rotating disk 24 is locked, the mounting plate 7 will be fixed.

[0034] A first sample clamping plate 8 is fixedly connected to one side of the upper end surface of the mounting plate 7, and side sliding grooves 6 are provided at both ends of the mounting plate 7. A second sample clamping plate 10 is also slidably connected to the mounting plate 7, and both ends of the second sample clamping plate 10 are fixedly connected to side sliders 5, which are slidably connected to the side sliding grooves 6. A distance adjustment component for adjusting the distance between the second sample clamping plate 10 and the first sample clamping plate 8 is also provided on the mounting plate 7; the distance adjustment component includes a third threaded rod 11, and the third threaded rod 11 is fixedly connected to the positions on both sides of the second sample clamping plate 10, and the upper end surface of the mounting plate 7 is away from the first sample A side baffle 26 is fixedly connected to one side of the clamping plate 8, and a mounting cover 9 is fixedly connected to the side of the side baffle 26 away from the first sample clamping plate 8. A pushing component for pushing the third threaded rod 11 to move is provided in the mounting cover 9; when working, the third threaded rod 11 can be driven to move by the pushing component, and the movement of the third threaded rod 11 will push the second sample clamping plate 10 to move, and the movement of the second sample clamping plate 10 will change the distance between the first sample clamping plate 8 and the second sample clamping plate 10, so that samples of different sizes can be clamped during use, and the clamping force can be adjusted according to the softness and hardness of the sample.

[0035] The pushing assembly includes a threaded sleeve 27, which is rotatably connected between the side baffle 26 and the two ends of the mounting cover 9. The threaded sleeve 27 is threadedly connected to the third threaded rod 11, and the threaded sleeve 27 is fixedly connected to the second synchronous pulley 31. The middle of the lower end of the side baffle 26 is also rotatably connected to the first synchronous pulley 29. The connecting shaft of the first synchronous pulley 29 is fixedly connected to the third handle 12. A synchronous belt 28 is installed between the second synchronous pulley 31 and the first synchronous pulley 29; the side baffle 26 Auxiliary guide wheels 30 for limiting the synchronous belt 28 are provided on both sides of the first synchronous pulley 29; when driving the third threaded rod 11 to move, the first synchronous pulley 29 is rotated by the third handle 12, and the rotation of the first synchronous pulley 29 can drive the synchronous belt 28 to operate, and the operation of the synchronous belt 28 can drive the two second synchronous pulleys 31 to rotate synchronously, and the synchronous rotation of the two second synchronous pulleys 31 will drive the two threaded sleeves 27 to rotate synchronously, and the rotation of the two threaded sleeves 27 will drive the two third threaded rods 11 to move accordingly.

[0036] The working principle of the present invention is: when in use, the sample is placed between the first sample clamping plate 8 and the second sample clamping plate 10, and then the first synchronous pulley 29 is rotated by the third handle 12. The rotation of the first synchronous pulley 29 can drive the synchronous belt 28 to operate, and the operation of the synchronous belt 28 can drive the two second synchronous pulleys 31 to rotate synchronously. The synchronous rotation of the two second synchronous pulleys 31 will drive the two threaded sleeves 27 to rotate synchronously. The rotation of the two threaded sleeves 27 will drive the two third threaded rods 11 to move accordingly. The movement of the third threaded rod 11 will push the second sample clamping plate 10 to move. When the second sample clamping plate 10 moves, the distance between the first sample clamping plate 8 and the second sample clamping plate 10 will change, thereby achieving the clamping of the sample. When it is necessary to When the angle of the mounting plate 7 is adjusted, the rotating shaft 37 can be rotated by the second handle 18. The rotation of the rotating shaft 37 can drive the bevel gear 38 to rotate. The engagement of the two bevel gears 38 can drive the second threaded rod 3 to rotate. The rotation of the second threaded rod 3 can drive the lifting block 4 to rise and fall. The lifting of the lifting block 4 can drive the adjusting arm 23 to perform corresponding movement. The movement of the adjusting arm 23 can drive the mounting plate 7 to adjust the angle accordingly, so that the sample can be polished at different angles as needed during use. Then, by rotating the first handle 13, the rotation of the first handle 13 drives the first threaded rod 2 to rotate. The rotation of the first threaded rod 2 can drive the slide 16 to move along the first T-shaped rail 15, so that the sample is close to the polishing equipment and can be polished as needed.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Although this specification describes the embodiments, not every embodiment contains only one technical solution. This description is for clarity only. Those skilled in the art should read the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable spacing Akron abrasion specimen grinding fixture, comprising a base plate (1), characterized in that: First T-shaped rails (15) are fixedly connected to both sides of the upper end surface of the base plate (1), a slide (16) is slidably connected between the two first T-shaped rails (15), and a moving component for driving the slide (16) to slide on the first T-shaped rails (15) is provided on the base plate (1); Both sides of the upper end surface of the slide (16) are fixedly connected to support vertical plates (17), the upper ends of the support vertical plates (17) are rotatably connected to an adjustment platform (36), and an angle adjustment component for adjusting the angle of the adjustment platform (36) is provided between the two support vertical plates (17); A mounting plate (7) is provided above the adjustment platform (36), and second T-shaped rails (21) are fixedly connected to both sides of the lower end surface of the mounting plate (7), and the two second T-shaped rails (21) are slidably connected to the adjustment platform (36). A driving component for driving the mounting plate (7) to perform reciprocating motion is provided on the adjustment platform (36); A first sample clamping plate (8) is fixedly connected to one side of the upper end surface of the mounting plate (7), and side sliding grooves (6) are provided at both ends of the mounting plate (7). A second sample clamping plate (10) is also slidably connected to the mounting plate (7), and side sliders (5) are fixedly connected to both ends of the second sample clamping plate (10). The side sliders (5) are slidably connected to the side sliding grooves (6). A distance adjustment component for adjusting the distance between the second sample clamping plate (10) and the first sample clamping plate (8) is also provided on the mounting plate (7).

2. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 1 is characterized in that: The moving assembly comprises a first threaded rod (2), the first threaded rod (2) being rotatably connected to the middle position of the upper end surface of the base plate (1) by a support, the first threaded rod (2) being threadedly connected to the slide (16), and a first handle (13) being installed on the connecting shaft head at one end of the first threaded rod (2).

3. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 1 is characterized in that: The angle adjustment component includes a limiting side rail (39), the limiting side rail (39) is fixedly connected to the opposite side of the two supporting vertical plates (17), a lifting block (4) is slidably connected between the two limiting side rails (39), a transverse plate is fixedly connected between the two ends of the two supporting vertical plates (17), a second threaded rod (3) is rotatably connected between the two transverse plates, the second threaded rod (3) is threadedly connected to the lifting block (4), both ends of the lifting block (4) are rotatably connected to the adjustment arm (23), the ends of the two adjustment arms (23) away from the lifting block (4) are rotatably connected to the lower end surface of the adjustment platform (36), and a rotating component for driving the second threaded rod (3) to rotate is provided on one side of the slide (16).

4. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 3 is characterized in that: The rotating assembly comprises a rotating shaft (37), the rotating shaft (37) being rotatably connected to the lower end of a supporting vertical plate (17) on one side, the rotating shaft (37) and the opposite end of the second threaded rod (3) being fixedly connected to a bevel gear (38), the two bevel gears (38) being meshed with each other, and the end of the rotating shaft (37) away from the bevel gear (38) being fixedly connected to the second handle (18).

5. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 1, characterized in that: The driving assembly comprises a bottom frame (20), the bottom frame (20) being fixedly connected to one end of the lower end face of the adjustment platform (36) away from the supporting vertical plate (17), a driving motor (19) being installed in the middle of the lower end face of the bottom frame (20), the output end of the driving motor (19) being fixedly connected to a rotating disk (24), the edge of the upper end face of the rotating disk (24) being rotatably connected to a connecting rod (22), the end of the connecting rod (22) away from the rotating disk (24) being rotatably connected to the mounting plate (7), and a locking assembly for locking the rotating disk (24) is also provided on the bottom frame (20).

6. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 5, characterized in that: The locking assembly comprises a mounting shell (25), the mounting shell (25) being fixedly connected to a position of the bottom frame (20) on one side of the rotating disk (24), an iron slider (33) being slidably connected in the mounting shell (25), one end of the iron slider (33) being fixedly connected to a latch pin (32), the latch pin (32) being slidably connected to the mounting shell (25), a spring (34) being installed between the iron slider (33) and an inner end surface of the mounting shell (25), an electromagnet (35) being installed in the middle of a side of the mounting shell (25) away from the rotating disk (24), and a plurality of locking holes (14) being opened on the circumference of the rotating disk (24).

7. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 1, characterized in that: The distance adjustment assembly includes a third threaded rod (11), and the third threaded rod (11) is fixedly connected to positions on both sides of the second sample clamping plate (10). A side baffle (26) is fixedly connected to the side of the upper end surface of the mounting plate (7) away from the first sample clamping plate (8), and a mounting cover (9) is fixedly connected to the side of the side baffle (26) away from the first sample clamping plate (8). A pushing assembly for pushing the third threaded rod (11) to move is provided in the mounting cover (9).

8. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 7, characterized in that: The pushing assembly includes a threaded sleeve (27), which is rotatably connected between the side baffle (26) and the two ends of the mounting cover (9), and the threaded sleeve (27) is threadedly connected to the third threaded rod (11). The threaded sleeve (27) is fixedly connected to the second synchronous pulley (31), and the middle of the lower end of the side baffle (26) is also rotatably connected to the first synchronous pulley (29). The connecting shaft of the first synchronous pulley (29) is fixedly connected to the third handle (12), and a synchronous belt (28) is installed between the second synchronous pulley (31) and the first synchronous pulley (29).

9. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 8, characterized in that: The side baffles (26) are located on both sides of the first synchronous pulley (29) and are provided with auxiliary guide wheels (30) for limiting the synchronous belt (28).

10. The adjustable spacing Akron abrasion specimen grinding fixture according to claim 1, characterized in that: Both ends of the two side edges of the bottom plate (1) are fixedly connected with mounting seats.

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