Abrasion resistance tester for plastic pulley

Abstract

The utility model discloses a plastic pulley wear resistance tester, which belongs to the technical field of plastic pulley detection, and comprises a base, the top of the base is fixedly connected with a connecting frame, the outer surface of the connecting frame is provided with a moving frame, the bottom of the moving frame is fixedly connected with a polishing wheel, the top of the base is provided with a transfer wheel, and the transfer wheel is provided with a grinding wheel. A connecting block is rotationally connected to the top of the transfer wheel, the grinding wheel is located above the connecting block, and plastic pulleys of different sizes are accurately clamped and positioned by manually adjusting cooperation of a limiting groove in the connecting block and a limiting column and pushing engagement of a clamping block and a rack through a micro air cylinder. Sliding or displacement in the testing process is effectively prevented, the accuracy of the testing result is ensured, the tester drives the grinding wheel and the switching wheel through the motor, it can be ensured that the force, speed and direction in the friction process are kept constant, and the testing precision is improved. Therefore, inconsistency of detection results caused by factors such as force difference and friction time difference during manual operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic pulley testing technology, and more specifically, to a plastic pulley wear resistance tester. Background Technology

[0002] Plastic pulleys are pulley systems whose main body or entirety is made of plastic. They are lightweight, corrosion-resistant, and rust-resistant. They are typically used in applications requiring light loads and low noise, effectively guiding and supporting objects to slide or move along a specific track or path.

[0003] Patent CN216448806U discloses a pulley groove wear detection device. This device includes a light-emitting component, a flexible rod for adjusting the angle of the light-emitting component, and a telescopic rod for adjusting the position of the light-emitting component. The two ends of the flexible rod are connected to the light-emitting component and the telescopic rod, respectively. The light-emitting component has an arc-shaped portion with the same curvature as the pulley groove in its unworn state, which can fit against the inner wall of the unworn pulley groove. This invention solves the technical problems of inconvenient and low-accuracy detection of wear conditions in overhead crane pulley grooves.

[0004] Although the device has many beneficial effects, the following problems still exist: Although the testing device solves the technical problems of inconvenience and low accuracy in detecting the wear condition of overhead crane pulley grooves, the traditional method of testing the wear resistance of plastic pulleys mainly relies on manual operation, such as testing by manual friction. It is difficult to keep the force, speed and direction of manual friction constant, which may lead to inconsistency in the test results. Differences in the force and friction time of different operators may have a significant impact on the test results. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a plastic pulley wear resistance tester, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a plastic pulley abrasion resistance tester, comprising a base, a connecting frame fixedly connected to the top of the base, a movable frame provided on the outer surface of the connecting frame, a grinding wheel fixedly connected to the bottom of the movable frame, a transfer wheel provided on the top of the base, a connecting block rotatably connected to the top of the transfer wheel, the grinding wheel located above the connecting block, and further comprising:

[0009] The clamping assembly, located on the outer surface of the connecting block, is used to clamp plastic pulleys of different sizes;

[0010] A rotating component, located inside the base, is used to drive the adapter wheel to rotate;

[0011] The lifting assembly, located on the outer surface of the connecting frame, is used to adjust the height of the grinding wheel.

[0012] Preferably, the clamping assembly includes a limiting post, a rubber wheel, and a limiting groove. The outer surface of the connecting block is provided with a plurality of annularly distributed limiting grooves. The plurality of limiting grooves are all arranged in an arc shape. The limiting post is slidably engaged inside the plurality of limiting grooves. The rubber wheel is fixedly connected to the top of the plurality of limiting posts.

[0013] Preferably, the clamping assembly further includes a mounting bracket, a micro cylinder, a rack, and a locking block. Two symmetrically distributed mounting brackets are fixedly connected to the outer surface of the adapter wheel. A micro cylinder is fixedly mounted on the outer surface of each of the two mounting brackets. A locking block is fixedly connected to the output end of each of the two micro cylinders. A rack is fixedly connected to the outer surface of the connecting block. The rack has a circular structure. The two locking blocks are engaged with the rack.

[0014] Preferably, the rotating assembly includes a second motor, a first gear, a second gear, a third gear, a fourth gear, and a transition block. A fixed box is fixedly connected to the outer surface of the base. The second motor is fixedly installed on the top of the fixed box. The first gear is rotatably connected inside the fixed box. The output end of the second motor is fixedly connected to the first gear. The first gear is located inside the base. The third gear is rotatably connected to the bottom inner wall of the base. The second gear is fixedly connected to the top of the third gear. The first gear and the third gear are meshed. The fourth gear is rotatably connected to the center of the bottom inner wall of the base. The second gear and the fourth gear are meshed. The transition block is fixedly connected to the top of the fourth gear. The transition block is fixedly connected to the transition wheel.

[0015] Preferably, the lifting assembly includes a first motor, a threaded rod, a rectangular groove, and a connecting plate. The connecting frame is arranged in an L-shape. The threaded rod is rotatably connected between the connecting frame and the base. The connecting plate is fixedly connected to the outer surface of the movable frame. The threaded rod is threadedly sleeved with the connecting plate. The first motor is fixedly installed on the top of the connecting frame. The output end of the first motor is fixedly connected to the threaded rod. A rectangular groove is formed on the outer surface of the connecting frame. The movable frame is slidably connected to the rectangular groove.

[0016] Preferably, the movable frame is arranged in an L-shape, and reinforcing plates are fixedly connected to both outer surfaces of the movable frame, with the two reinforcing plates fixedly connected to the connecting plate.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a plastic pulley wear resistance tester, which has the following beneficial effects:

[0019] 1. This plastic pulley abrasion resistance tester achieves precise clamping and positioning of plastic pulleys of different sizes by manually adjusting the fit between the limiting groove and the limiting post on the connecting block and by using a micro-cylinder to push the engagement of the clamping block and the rack. This effectively prevents slippage or displacement during the test, thus ensuring the accuracy of the test results. The tester uses a motor to drive the grinding wheel and the transfer wheel, which ensures that the force, speed and direction remain constant during the friction process, thereby avoiding inconsistencies in test results caused by differences in force and friction time during manual operation.

[0020] 2. This plastic pulley abrasion resistance tester can quickly adapt to plastic pulleys of different sizes and thicknesses through the rapid adjustment of the clamping and lifting components, greatly shortening the test preparation time. The tester has the ability to conduct continuous testing and can perform abrasion resistance tests on multiple pulleys in a short time, significantly improving testing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a side view of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the base of this utility model;

[0024] Figure 4 This is a schematic diagram of the limiting groove structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the snap-fit ​​block structure of this utility model.

[0026] In the diagram: 1. Base; 2. Connecting frame; 3. Moving frame; 4. First motor; 5. Threaded rod; 6. Rectangular groove; 7. Grinding wheel; 8. Adapter wheel; 9. Mounting frame; 10. Limiting post; 11. Rubber wheel; 12. Connecting block; 13. Micro cylinder; 14. Rack; 15. Reinforcing plate; 16. Connecting plate; 17. Second motor; 18. First gear; 19. Second gear; 20. Third gear; 21. Fourth gear; 22. Adapter block; 23. Limiting groove; 24. Snap-fit ​​block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 This utility model provides a technical solution:

[0029] A plastic pulley abrasion resistance tester includes a base 1, a connecting frame 2 fixedly connected to the top of the base 1, a movable frame 3 provided on the outer surface of the connecting frame 2, a grinding wheel 7 fixedly connected to the bottom of the movable frame 3, a transfer wheel 8 provided on the top of the base 1, a connecting block 12 rotatably connected to the top of the transfer wheel 8, and the grinding wheel 7 located above the connecting block 12. The tester also includes:

[0030] A clamping assembly, located on the outer surface of the connecting block 12, is used to clamp plastic pulleys of different sizes;

[0031] A rotating component, located inside the base 1, is used to drive the adapter wheel 8 to rotate;

[0032] The lifting assembly, located on the outer surface of the connecting frame 2, is used to adjust the height of the grinding wheel 7. The plastic pulley contacts the grinding wheel 7, thereby generating friction on the pulley surface to simulate the wear conditions in actual use. By observing or measuring the changes in the pulley surface before and after the test, its wear resistance can be evaluated.

[0033] Furthermore, the clamping assembly includes limiting posts 10, rubber wheels 11, and limiting grooves 23. The outer surface of the connecting block 12 is provided with multiple annularly distributed limiting grooves 23, all of which are arc-shaped. The limiting posts 10 are slidably engaged inside the multiple limiting grooves 23. The tops of the multiple limiting posts 10 are fixedly connected to the rubber wheels 11. Manually rotating the connecting block 12 causes the position of the limiting grooves 23 on the connecting block 12 to shift, thereby causing the limiting posts 10 to slide within the limiting grooves 23. This allows the multiple limiting posts 10 to converge or spread towards the center of the connecting block 12, thereby enabling the multiple rubber wheels 11 to initially adhere to and limit the position of the pulleys, preventing them from sliding or shifting during the test.

[0034] Furthermore, the clamping assembly also includes a mounting bracket 9, a micro cylinder 13, a rack 14, and a locking block 24. Two symmetrically distributed mounting brackets 9 are fixedly connected to the outer surface of the adapter wheel 8. A micro cylinder 13 is fixedly mounted on the outer surface of each of the two mounting brackets 9. A locking block 24 is fixedly connected to the output end of each of the two micro cylinders 13. A rack 14 is fixedly connected to the outer surface of the connecting block 12. The rack 14 has a circular structure. The two locking blocks 24 are engaged with the rack 14. Then, the micro cylinder 13 fixed on the micro mounting bracket 9 is activated. The micro cylinder 13 pushes the locking block 24 to move, thereby interfering with the two locking blocks 24 and engaging with the rack 14, restricting the rotation of the connecting block 12, thus ensuring that the pulley is firmly and evenly clamped to accommodate pulleys of different sizes.

[0035] Furthermore, the rotating assembly includes a second motor 17, a first gear 18, a second gear 19, a third gear 20, a fourth gear 21, and an adapter block 22. A fixed box is fixedly connected to the outer surface of the base 1. The second motor 17 is fixedly mounted on the top of the fixed box. The first gear 18 is rotatably connected inside the fixed box. The output end of the second motor 17 is fixedly connected to the first gear 18. The first gear 18 is located inside the base 1. The third gear 20 is rotatably connected to the bottom inner wall of the base 1. The second gear 19 is fixedly connected to the top of the third gear 20. The first gear 18 and the third gear 20 are meshed together. The center of the bottom inner wall of the base 1 is... A fourth gear 21 is rotatably connected, and a second gear 19 meshes with the fourth gear 21. A transition block 22 is fixedly connected to the top of the fourth gear 21, and the transition block 22 is fixedly connected to the transition wheel 8. The output end of the second motor 17 drives the first gear 18 to rotate. The first gear 18 meshes with the third gear 20 located inside the base 1, thereby driving the third gear 20 and the second gear 19 on its top to rotate. The second gear 19 then meshes with the fourth gear 21. The rotation of the fourth gear 21 is finally transmitted to the transition wheel 8 through the transition block 22, causing the transition wheel 8 and the clamped plastic pulley to start rotating, providing the necessary rotation conditions for the wear resistance test.

[0036] Furthermore, the lifting assembly includes a first motor 4, a threaded rod 5, a rectangular groove 6, and a connecting plate 16. The connecting frame 2 is arranged in an L-shape. The threaded rod 5 is rotatably connected between the connecting frame 2 and the base 1. The connecting plate 16 is fixedly connected to the outer surface of the movable frame 3. The threaded rod 5 is threadedly sleeved with the connecting plate 16. The first motor 4 is fixedly installed on the top of the connecting frame 2. The output end of the first motor 4 is fixedly connected to the threaded rod 5. The outer surface of the connecting frame 2 has a rectangular groove 6. The movable frame 3 is slidably connected to the rectangular groove 6. The output end of the first motor 4 drives the threaded rod 5 to rotate. Since the connecting plate 16 on the movable frame 3 is threadedly sleeved with the threaded rod 5, as the threaded rod 5 rotates, the connecting plate 16 and the movable frame 3 fixed to it will move up and down along the rectangular groove 6, thereby adjusting the height of the grinding wheel 7 to adapt to pulleys of different thicknesses or different testing requirements.

[0037] Furthermore, the movable frame 3 is arranged in an L-shape. Reinforcing plates 15 are fixedly connected to both outer surfaces of the movable frame 3. The two reinforcing plates 15 are fixedly connected to the connecting plate 16. The reinforcing plates 15 on both outer surfaces of the movable frame 3 not only increase the stability of the structure, but also ensure the firm connection between the connecting plate 16 and the movable frame 3, preventing deformation or loosening during the lifting process.

[0038] Working principle: When the operator needs to use the plastic pulley abrasion resistance tester, first place the plastic pulley to be tested on the connecting block 12, manually rotate the connecting block 12 to shift the position of the limiting groove 23 on the connecting block 12, thereby causing the limiting post 10 to slide within the limiting groove 23, so that multiple limiting posts 10 converge or spread towards the center of the connecting block 12, thereby enabling multiple rubber wheels 11 to initially fit and limit the position of the pulley, preventing it from sliding or shifting during the test. Next, start the micro cylinder 13 fixed on the micro mounting frame 9, the micro cylinder 13 pushes the locking block 24 to move, thereby interfering with the two locking blocks 24 and the rack 14 to mesh and connect, limiting the rotation of the connecting block 12, thus ensuring that the pulley is firmly and evenly clamped to accommodate pulleys of different sizes. After the plastic pulley is fixed, start the first motor 4, the output end of the first motor 4 drives the threaded rod 5 to rotate. Since the connecting plate 16 on the moving frame 3 is threadedly connected to the threaded rod 5, as the threaded rod 5 rotates, the connecting plate 16 and its fixed... The fixed moving frame 3 moves up and down along the rectangular groove 6, thereby adjusting the height of the grinding wheel 7 to accommodate pulleys of different thicknesses or different testing requirements. The reinforcing plates 15 on the outer surfaces of both sides of the moving frame 3 not only increase the stability of the structure, but also ensure a firm connection between the connecting plate 16 and the moving frame 3, preventing deformation or loosening during lifting. Then, the second motor 17 is started, and the output end of the second motor 17 drives the first gear 18 to rotate. The first gear 18 meshes with the third gear 20 located inside the base 1, thereby driving the third gear 20 and the second gear 19 on top to rotate. The second gear 19 then meshes with the fourth gear 21. The rotation of the fourth gear 21 is finally transmitted to the adapter wheel 8 through the adapter block 22, causing the adapter wheel 8 and the clamped plastic pulley to start rotating, providing the necessary rotation conditions for the wear resistance test. The plastic pulley contacts the grinding wheel 7, thereby generating friction on the pulley surface, simulating the wear situation in actual use. By observing or measuring the changes in the pulley surface before and after the test, its wear resistance performance can be evaluated.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic pulley wear tester comprising a base (1) characterised in that: The top of the base (1) is fixedly connected with a connecting frame (2), the outer surface of the connecting frame (2) is provided with a moving frame (3), the bottom of the moving frame (3) is fixedly connected with a grinding wheel (7), the top of the base (1) is provided with a transfer wheel (8), the top of the transfer wheel (8) is rotatably connected with a connecting block (12), the grinding wheel (7) is located above the connecting block (12), and the base (1) is further provided with A clamping assembly is located on the outer surface of the connecting block (12) and is used for clamping plastic pulleys of different sizes; A rotating assembly is located in the inside of the base (1) and is used for driving the transfer wheel (8) to rotate; A lifting assembly is located on the outer surface of the connecting frame (2) and is used for adjusting the height of the grinding wheel (7).

2. A plastic pulley wear resistance tester according to claim 1, characterized in that: The clamping assembly comprises a limiting column (10), a rubber wheel (11) and a limiting groove (23), the outer surface of the connecting block (12) is provided with a plurality of annular equidistant limiting grooves (23), a plurality of the limiting grooves (23) are arranged in an arc shape, a plurality of the limiting grooves (23) are slidably connected with the limiting column (10) in the inside, and a plurality of the limiting columns (10) are fixedly connected with the rubber wheel (11) at the top.

3. A plastic pulley wear resistance tester according to claim 1, characterized in that: The clamping assembly further comprises a mounting frame (9), a micro-cylinder (13), a rack (14) and a clamping block (24), the outer surface of the transfer wheel (8) is fixedly connected with two symmetrically distributed mounting frames (9), the outer surfaces of the two mounting frames (9) are fixedly connected with the micro-cylinder (13), the output ends of the two micro-cylinders (13) are fixedly connected with the clamping block (24), the outer surface of the connecting block (12) is fixedly connected with the rack (14), the rack (14) is arranged in a circular structure, and the two clamping blocks (24) are in meshing connection with the rack (14).

4. A plastic pulley wear resistance tester according to claim 1, characterized in that: The rotating assembly comprises a second motor (17), a first gear (18), a second gear (19), a third gear (20), a fourth gear (21) and a transfer block (22), the outer surface of the base (1) is fixedly connected with a fixed box, the top of the fixed box is fixedly connected with the second motor (17), the inside of the fixed box is rotatably connected with the first gear (18), the output end of the second motor (17) is fixedly connected with the first gear (18), the first gear (18) is located in the inside of the base (1), the bottom inner wall of the base (1) is rotatably connected with the third gear (20), the top of the third gear (20) is fixedly connected with the second gear (19), the first gear (18) is in meshing connection with the third gear (20), the bottom inner wall center of the base (1) is rotatably connected with the fourth gear (21), the second gear (19) is in meshing connection with the fourth gear (21), the top of the fourth gear (21) is fixedly connected with the transfer block (22), and the transfer block (22) is fixedly connected with the transfer wheel (8).

5. A plastic pulley wear resistance tester according to claim 1, characterized in that: Said lifting assembly includes first motor (4), threaded rod (5), rectangular groove (6) and connecting plate (16), the connecting frame (2) is provided with L-shaped structure, the threaded rod (5) is rotatably connected between the connecting frame (2) and base (1), the outer surface of the moving frame (3) is fixedly connected with connecting plate (16), the threaded rod (5) is threadedly connected with connecting plate (16), the top of the connecting frame (2) is fixedly installed with first motor (4), the output end of first motor (4) is fixedly connected with threaded rod (5), the outer surface of the connecting frame (2) is provided with rectangular groove (6), the moving frame (3) is slidably connected with rectangular groove (6).

6. A plastic pulley wear resistance tester according to claim 5, wherein: Said moving frame (3) is provided with L-shaped structure, the outer surface of both sides of the moving frame (3) is fixedly connected with reinforcing plate (15), two reinforcing plate (15) is fixedly connected with connecting plate (16).

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