A grinding rod performance testing device

Abstract

The invention relates to the technical field of grinding rod performance testing, and specifically proposes a grinding rod performance testing device, comprising a sliding wear device assembled on the surface of a test bench, an abrasive wear mechanism fixedly assembled on the surface of the test bench, and a detection frame assembled on the surface of the test bench and capable of moving. The invention realizes separate working condition simulation tests through the sliding wear mechanism, the rolling wear mechanism and the abrasive wear mechanism, and a movable detection bench is assembled on the test bench, on which rolling wear working condition and abrasive wear working condition simulation are performed. During the movement, the rolling wear working condition simulation and the abrasive wear working condition simulation will generate a repeated simulation area on the surface of the grinding rod, and the area is the composite simulation working condition area. Different working conditions can be simulated on the same grinding rod, so that the comparison effect under different working conditions is more obvious, and the composite working condition simulation is achieved on the same grinding rod, so that the test result is closer to the actual use result.

Description

Technical Field

[0001] The invention relates to the technical field of wear resistance testing machines, and particularly proposes a grinding rod performance testing device. Background Art

[0002] Rods are the main grinding medium in rod mills. Through the impact, grinding, shearing and lamination crushing of the rods, the rod mill can effectively grind the material to meet the material particle size requirements of different industries. Therefore, various performance tests of the rods are required during the production of rods, including hardness testing, wear resistance testing, strength testing, metallographic structure testing and dimensional accuracy testing.

[0003] Usually, staff will use different types of wear resistance testing machines to test wear resistance. However, most of the current wear resistance testing machines can only simulate specific types of working conditions for testing, such as sliding wear, rolling wear and abrasive wear. However, the actual use environment is often a combination of multiple wear forms. Therefore, when testing the wear resistance of the grinding rod, there will be a large deviation between the test results and the wear resistance performance in actual use. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a grinding rod performance testing device for solving the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a grinding rod performance testing device, comprising a test bench equipped with a clamping assembly, the grinding rod is fixed above the test bench by the clamping assembly and rotates; a sliding wear mechanism assembled on the surface of the test bench, for detecting the sliding wear condition of a partial area of the grinding rod surface, and the sliding wear mechanism rotates synchronously with the grinding rod; a rolling wear mechanism fixedly assembled on the surface of the test bench, for performing rolling wear testing on a partial area of the grinding rod surface when the grinding rod rotates; an abrasive wear mechanism fixedly assembled on the surface of the test bench, the grinding rod passes through the interior of the abrasive wear mechanism, for detecting the abrasive wear condition of a partial area of the grinding rod surface; a detection frame assembled on the surface of the test bench and capable of movement, the surface of the detection frame is also equipped with the abrasive wear mechanism, abrasive particles pass through the interior of the abrasive wear mechanism, the surface of the detection frame is equipped with a rotatable test rod, the test rod is tightly attached to the surface of the grinding rod, and complex wear conditions will be generated when the detection frame moves.

[0006] Preferably, the sliding wear mechanism includes a test plate 1 that is tightly attached to the surface of the grinding rod, and the test plate 1 is installed and connected to the clamping assembly through a connecting frame; a height adjustment assembly that is assembled on the surface of the connecting frame and can move, and is used to adjust the distance between the test plate 1 and the grinding rod; a limit ring that is mounted on the surface of the clamping assembly through a bearing, and a wavy limit groove is provided on the surface of the limit ring, and a limit ball is assembled on the surface of the adjustment assembly through a fixing rod, and the limit ball is stuck in the inside of the limit groove; and an installation assembly for fixing the limit ring to prevent the limit ring from rotating synchronously with the clamping assembly.

[0007] Preferably, the mounting assembly includes a magnetic plate mounted on the bottom of the limiting ring surface, and the surface of the test bench is equipped with an electromagnet located directly below the limiting ring, and the electromagnet and the magnetic plate are located on the same vertical line.

[0008] Preferably, the mounting assembly includes two support rods symmetrically fixedly mounted on the surface of the limit ring, and two U-shaped frames are symmetrically assembled on the surface of the test bench. One end of the U-shaped frame is provided with an integrally formed, inclined guide rod, and the other end of the U-shaped frame is provided with an integrally formed U-shaped plate. One end of the support rod is stuck inside the U-shaped plate, and a connecting spring is assembled between the U-shaped frame and the test bench.

[0009] Preferably, the rolling wear mechanism includes a test plate 2 that is tightly attached to the surface of the grinding rod. The surface of the test bench is equipped with a fixing frame. The test plate 2 is assembled on the fixing frame through a height adjustment component. The height adjustment component is used to adjust the distance between the test plate 2 and the grinding rod.

[0010] Preferably, the abrasive wear mechanism includes an abrasive frame for containing abrasive particles, with through holes formed on both sides of the abrasive frame, and detachable leak-proof plates installed on both sides of the interior of the abrasive frame, and the grinding rod moves through the surface of the leak-proof plates.

[0011] Preferably, the interior of the detection frame is equipped with a rotatable long rod, and the surfaces of the long rod and the clamping assembly are equipped with gear 1. The two gears 1 are connected through gear 2. The length of gear 1 installed on the long rod is smaller than that of gear 1 installed on the clamping assembly, and the length of gear 2 is the same as that of gear 1 installed on the clamping assembly.

[0012] Preferably, a short rod is fixedly passed through the center of the test rod, and gear three is fixedly mounted on the surfaces of the short rod and the long rod. The two gear threes are connected by a transmission belt, and the surface of the short rod is equipped with an angle adjustment assembly for adjusting the distance between the test rod and the grinding rod.

[0013] Preferably, the angle adjustment assembly includes two rings respectively mounted on the surface of the long rod and the short rod, the rings are fixedly installed by bearings, an integral connecting rod is provided between the two rings, and the connecting rod extends in the direction of the connecting rod, and the surface of the detection frame is equipped with a movable extrusion rod, which rests on the surface in the extension direction of the connecting rod.

[0014] Preferably, the clamping assembly includes two clamping cylinders, and a plurality of rubber plates are provided inside the clamping cylinders. The plurality of rubber plates are arranged in an annular array and a linear array. Along the axial direction of the clamping cylinder, the closer the rubber plate is to the bottom of the cylinder, the longer the length.

[0015] The above technical solution has the following advantages or beneficial effects: the present invention provides a grinding rod performance testing device, which realizes separate working condition simulation tests by setting a sliding wear mechanism, a rolling wear mechanism and an abrasive wear mechanism, and assembles a movable detection table on the test table, and performs rolling wear working condition simulation and abrasive wear working condition simulation on the detection table. During the movement, the rolling wear working condition simulation and the abrasive wear working condition simulation will produce a repeated simulation area on the surface of the grinding rod, which is the composite simulation working condition area. Therefore, different working conditions can be simulated on the same grinding rod, making the comparison effect under different working conditions more obvious, and realizing the simulation of composite working conditions on the same grinding rod can more intuitively and realistically reflect the wear conditions of the grinding rod under different working conditions, so that the test results are closer to the actual usage results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of a grinding rod performance testing device provided by the present invention.

[0018] Figure 2 It is a three-dimensional structural diagram of the sliding wear mechanism.

[0019] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure viewed from above.

[0020] Figure 4 It is a partial three-dimensional structural diagram of the position of the limit ring.

[0021] Figure 5 It is a three-dimensional structural diagram of the rolling wear mechanism.

[0022] Figure 6 It is a partial three-dimensional structural diagram of the composite working position.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the angle adjustment component.

[0024] Figure 8 It is a three-dimensional structural diagram of the abrasive wear mechanism.

[0025] Figure 9 It is a partial three-dimensional structural diagram of the meshing state of gear one and gear two.

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the clamping component.

[0027] Figure 11 yes Figure 10 A partial cross-sectional diagram of .

[0028] In the figure: 1. test bench; 2. detection frame; 3. test rod; 4. test plate 1; 5. connecting frame; 6. limiting ring; 7. limiting groove; 8. limiting ball; 9. magnetic plate; 10. electromagnet; 11. support rod; 12. U-shaped frame; 13. U-shaped plate; 14. guide rod; 15. connecting spring; 16. test plate 2; 17. fixing frame; 18. abrasive frame; 19. through hole; 20. leak-proof plate; 21. long rod; 22. gear 1; 23. gear 2; 24. short rod; 25. gear 3; 26. transmission belt; 27. collar; 28. connecting rod; 29. extrusion rod; 30. clamping cylinder; 31. rubber plate. 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] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 Disclosed is a grinding rod performance testing device for testing the performance of grinding rods of different compositions, including but not limited to chrome alloy grinding rods, ceramic grinding rods, and resin grinding rods. The testing types include sliding wear, rolling wear, abrasive wear, and a composite state of different wear conditions.

[0032] like Figure 1 、 Figures 9-11As shown, the grinding rod performance testing device includes a test bench 1, which is divided into two movable parts. Two clamping cylinders 30 are respectively assembled on the test bench 1, corresponding to the two parts of the test bench 1. A plurality of elastic rubber plates 31 are provided inside the clamping cylinder 30, which are assembled in a circular array and a linear array respectively. In the axial direction of the clamping cylinder 30, the closer the rubber plate 31 is to the bottom of the cylinder, the longer the length. When grinding rods of different diameters are inserted into the clamping cylinder 30 for installation, the surface of the rubber plate 31 is first squeezed, and the elastic force and friction force of the rubber plate 31 are used to clamp and fix the grinding rod. The range of compatible grinding rod diameters is also relatively wide. During testing, the clamping cylinder 30 is driven to rotate by an external motor, thereby driving the grinding rod to rotate (the motor is not shown in the figure).

[0033] The surface of the grinding rod is divided into different areas for testing different working conditions and composite working conditions, including sliding wear conditions, rolling wear conditions, abrasive wear conditions, combined sliding and rolling wear conditions, combined sliding and abrasive wear conditions, and combined sliding, rolling and abrasive wear conditions.

[0034] like Figure 2-Figure 4 As shown, the simulation of sliding wear conditions includes a limiting ring 6 installed on the surface of one of the clamping cylinders 30 through a bearing to limit the clamping cylinder 30 to prevent it from axial displacement, but to enable the limiting ring 6 and the clamping cylinder 30 to rotate relative to each other, and an L-shaped or U-shaped connecting frame 5 is installed on the surface of the clamping cylinder 30. It should be noted that the connecting frame 5 will not affect the rotation of the clamping cylinder 30. A movable test plate 4 is assembled on the surface of the connecting frame 5. The shape of the test plate 4 is an arc, which fits on the surface of the grinding rod, and the moving direction of the test plate 4 is the axial direction of the grinding rod.

[0035] At the same time, in order to adapt to grinding rods of different diameters, a height adjustment component is assembled on the surface of the connecting frame 5, including a moving block. A threaded rod is installed on the surface of the moving block. The test plate 4 is installed on the end of the threaded rod through a bearing. The distance between the test plate 4 and the surface of the grinding rod is adjusted by rotating the threaded rod. A wavy limiting groove 7 is provided on the inner side of the limiting ring 6. A sleeve with an inner diameter larger than the diameter of the threaded rod is sleeved on the surface of the threaded rod. The sleeve is assembled with a limiting ball 8 through a fixed rod to ensure that the limiting ball 8 will not rotate with it when the threaded rod rotates. The limiting ball 8 is stuck in the inside of the limiting groove 7. In order to ensure that the limiting ball 8 can move along the internal shape of the limiting groove 7, a circular groove connected to the limiting groove 7 needs to be provided on one side of the limiting ring 6, and the fixing rod is located inside the circular groove.

[0036] When the clamping cylinder 30 rotates, the test plate 4 and the grinding rod will be driven to rotate simultaneously through the connecting frame 5. In order to ensure that the test plate 4 can produce axial displacement and simulate the working condition of sliding wear, the limit ring 6 needs to be fixed to ensure that during the rotation of the test plate 4, the limit groove 7 produces axial displacement on the limit ball 8.

[0037] For the type of chromium alloy grinding rod, two symmetrically installed support rods 11 are fixed on the surface of the limit ring 6. It should be noted that the support rod 11 cannot affect the rotation of the connecting frame 5. Two movable U-shaped frames 12 are symmetrically assembled on the surface of the test bench 1. The two ends of the U-shaped frame 12 are movable through the surface of the test bench 1. A connecting spring 15 is assembled between the outer surface of the test bench 1 and the U-shaped frame 12. One end of the U-shaped frame 12 is provided with an integrally formed guide rod 14, which is tilted and has a guiding effect on the connecting frame 5. The other end of the U-shaped frame 12 is provided with an integrally formed U-shaped plate 13. One end of the support rod 11 just rests against the inner side of the U-shaped plate 13, and the two guide rods 14 are centrally symmetrically arranged.

[0038] When the connecting frame 5 is separated from the guide rod 14, the rebound force of the connecting spring 15 will make the U-shaped frame 12 return to the initial position, thereby realizing limiting again, until the connecting frame 5 rotates to the U-shaped frame 12 at the symmetrical position, and continues to repeat the above operation.

[0039] For ceramic grinding rods and resin grinding rods, since this type of grinding rod does not contain iron components, a magnetic plate 9 is installed at the bottom position of the limit ring 6. The same magnetic plate 9 will not affect the rotation of the connecting frame 5. An electromagnet 10 is installed on the surface of the test bench 1, and the electromagnet 10 and the magnetic plate 9 are located on the same vertical line. When the electromagnet 10 is energized, the magnetism generated will have an adsorption effect on the magnetic plate 9, which is equivalent to providing a continuous downward pulling force on the limit ring 6, thereby ensuring the stability of the limit ring 6 and indirectly ensuring the stability of the axial displacement. However, since the magnetic attraction force of the electromagnet 10 will affect the grinding rod with iron, cobalt and nickel components, this embodiment is for grinding rods that do not contain iron, cobalt and nickel components.

[0040] like Figure 1and Figure 5 As shown, for the simulation of rolling wear conditions, it is only necessary to assemble a fixing frame 17 on the surface of the test bench 1, and also assemble a height adjustment component on the fixing frame 17, including a threaded rod threadedly mounted on the fixing frame 17, and a test plate 2 16 movably mounted on the end of the threaded rod through a bearing. The test plate 2 16 is tightly attached to the surface of the grinding rod, and the distance between the test plate 2 16 and the grinding rod is adjusted by the height adjustment component. During the rotation of the grinding rod, the test plate 2 16 does not move, thereby realizing the simulation of rolling wear conditions.

[0041] like Figure 6 and Figure 8 As shown, for the simulation of abrasive wear conditions, it is necessary to fix an abrasive frame 18 on the surface of the test bench 1 through support legs, and the inside of the abrasive frame 18 needs to be filled with abrasives used in actual production. Through holes 19 are opened on both sides of the abrasive frame 18, and removable leak-proof plates 20 are installed on both sides of the inside of the abrasive frame 18. The grinding rod moves through the surface of the leak-proof plate 20. Similarly, different leak-proof plates 20 are replaced for grinding rods of different diameters. During the rotation of the grinding rod, the abrasive will rub against the grinding rod, thereby realizing the simulation of abrasive wear conditions.

[0042] like Figure 6-Figure 9 As shown, it targets complex sliding and rolling wear combined conditions, sliding and abrasive wear combined conditions, and sliding rolling and abrasive wear combined conditions.

[0043] A movable detection frame 2 is assembled on the surface of the test bench 1, and an abrasive frame 18 is also assembled on the surface of the detection frame 2, and corresponding through holes 19 are opened, and leak-proof plates 20 for abrasives of different diameters are installed. A rotatable long rod 21 is assembled inside the detection frame 2, and the surfaces of the long rod 21 and the clamping cylinder 30 are fixedly sleeved with gear 1 22. The two gears 1 22 are connected by rotating gear 2 23 mounted on the surface of the test bench 1. It should be noted that the length of gear 1 22 on the long rod 21 is less than the length of gear 1 22 on the clamping cylinder 30, and the length of gear 2 23 is the same as the length of gear 1 22 on the clamping cylinder 30, so as to ensure that during the movement of the detection frame 2, gear 1 22 and gear 2 23 can still maintain a stable meshing state. When the detection frame 2 moves, it will drive the abrasive frame 18 to move, thereby simulating the combined situation of sliding and abrasive working conditions.

[0044] A test rod 3 is set tightly on the surface of the grinding rod, and a short rod 24 is passed through the center of the test rod 3. The surfaces of the short rod 24 and the long rod 21 are fixedly sleeved with a gear three 25. The two gears 25 are connected by a transmission belt 26. Rings 27 are sleeved on the surfaces of the long rod 21 and the short rod 24. The rings 27 are fixedly installed through bearings. An integrally formed connecting rod 28 is provided between the two rings 27. At this time, it can be ensured that when the long rod 21 rotates, the test rod 3 can also be driven to rotate to realize the rolling wear working condition simulation. At the same time, the long rod 21 and the short rod 24 are both sleeved with a ring 27. The ring 27 is fixedly installed through a bearing. An integrally formed connecting rod 28 is provided between the two rings 27. The rod 21 moves with the detection frame 2, and the test rod 3 also moves with the detection frame 2 to realize the simulation of the composite working condition of sliding and rolling wear. During the reciprocating movement of the detection frame 2, the test rod 3 moves to the working condition area simulated by the abrasive frame 18. The two overlapping simulated areas are the composite working condition areas of sliding, rolling and abrasive wear. Performing separate simulations and composite simulations of different working conditions on the same grinding rod at the same time can more intuitively and realistically reflect the wear conditions of the grinding rod in different working states, making its detection results closer to the actual usage results.

[0045] In order to adapt to grinding rods of different diameters, the lower end of the connecting rod 28 extends to the bottom of the long rod 21, and a movable extrusion rod 29 is installed on the surface of the detection frame 2. The extrusion rod 29 can be driven to move by rotating the threaded rod or the electric push rod. The extrusion rod 29 is pressed against the extended position surface of the connecting rod 28. The extrusion force of the extrusion rod 29 is used to rotate the connecting rod 28 to ensure that the test rod 3 can be pressed against the surface of grinding rods of different diameters.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A grinding rod performance testing device, characterized in that: include: A test bench equipped with a clamping assembly, wherein the grinding rod is fixed by the clamping assembly and rotated above the test bench; A sliding wear mechanism mounted on the surface of the test bench is used to detect the sliding wear condition of a portion of the grinding rod surface. The sliding wear mechanism rotates synchronously with the grinding rod. A rolling wear mechanism fixedly mounted on the surface of the test bench is used to perform rolling wear testing on a portion of the grinding rod surface as the grinding rod rotates; An abrasive wear mechanism fixedly mounted on the surface of the test bench, with a grinding rod passing through the interior of the abrasive wear mechanism, for detecting abrasive wear conditions on a portion of the grinding rod surface; A movable detection frame mounted on the surface of the test bench, the surface of the detection frame also being equipped with an abrasive wear mechanism, the grinding rod passing through the interior of the abrasive wear mechanism, and a rotatable test rod mounted on the surface of the detection frame, the test rod being in close contact with the surface of the grinding rod, and a complex wear condition being generated when the detection frame moves; The sliding wear mechanism comprises: A test plate 1 is closely attached to the surface of the grinding rod, and the test plate 1 is installed and connected to the clamping assembly via a connecting frame; A height adjustment component assembled on the surface of the connecting frame and capable of movement, for adjusting the distance between the test plate 1 and the grinding rod; A limiting ring is mounted on the surface of the clamping component through a bearing, and a wave-shaped limiting groove is opened on the surface of the limiting ring. A limiting ball is assembled on the surface of the adjusting component through a fixing rod, and the limiting ball is stuck in the limiting groove; A mounting assembly for fixing the limiting ring to prevent the limiting ring from rotating synchronously with the clamping assembly.

2. A grinding rod performance testing device according to claim 1, characterized in that: The mounting assembly includes a magnetic plate mounted on the bottom of the limiting ring surface, and the surface of the test bench is equipped with an electromagnet located directly below the limiting ring, and the electromagnet and the magnetic plate are located on the same vertical line.

3. The grinding rod performance testing device according to claim 1, characterized in that: The mounting assembly includes two support rods symmetrically fixedly mounted on the surface of the limit ring, and two U-shaped frames are symmetrically assembled on the surface of the test bench. One end of the U-shaped frame is provided with an integrally formed, inclined guide rod, and the other end of the U-shaped frame is provided with an integrally formed U-shaped plate. One end of the support rod is stuck inside the U-shaped plate, and a connecting spring is assembled between the U-shaped frame and the test bench.

4. The grinding rod performance testing device according to claim 1, characterized in that: The rolling wear mechanism includes a second test plate tightly attached to the surface of the grinding rod. The surface of the test table is equipped with a fixing frame. The second test plate is assembled on the fixing frame through a height adjustment component. The height adjustment component is used to adjust the distance between the second test plate and the grinding rod.

5. The grinding rod performance testing device according to claim 1, characterized in that: The abrasive wear mechanism includes an abrasive frame for containing abrasive particles. Through holes are opened on both sides of the abrasive frame. Removable leak-proof plates are installed on both sides of the abrasive frame. The grinding rod moves through the surface of the leak-proof plates.

6. The grinding rod performance testing device according to claim 1, characterized in that: The interior of the detection frame is equipped with a rotatable long rod, and the surfaces of the long rod and the clamping assembly are equipped with gear 1. The two gears 1 are connected by gear 2. The length of gear 1 installed on the long rod is smaller than that of gear 1 installed on the clamping assembly, and the length of gear 2 is the same as that of gear 1 installed on the clamping assembly.

7. The grinding rod performance testing device according to claim 6, characterized in that: A short rod is fixedly passed through the center of the test rod, and gear three is fixedly mounted on the surfaces of the short rod and the long rod. The two gear threes are connected by a transmission belt. The surface of the short rod is equipped with an angle adjustment component for adjusting the distance between the test rod and the grinding rod.

8. The grinding rod performance testing device according to claim 7, characterized in that: The angle adjustment assembly includes two rings respectively mounted on the surface of the long rod and the short rod, the rings are fixedly installed by bearings, an integral connecting rod is provided between the two rings, and the connecting rod is extended, and a movable extrusion rod is mounted on the surface of the detection frame, and the extrusion rod is against the surface of the extended position of the connecting rod.

9. The grinding rod performance testing device according to claim 1, characterized in that: The clamping assembly includes two clamping cylinders, and a plurality of rubber plates are provided inside the clamping cylinders. The plurality of rubber plates are arranged in an annular array and a linear array. Along the axial direction of the clamping cylinder, the closer the rubber plate is to the bottom of the cylinder, the longer the length is.

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