Friction seat structure of an abrasion tester

Abstract

The utility model discloses a kind of friction seat structures of abrasion testing machine, including rack, friction seat structure is equipped on rack, friction seat structure includes pressure plate, the lower side of pressure plate side is equipped with motor, the output shaft of motor is equipped with first eccentric wheel, first eccentric wheel is equipped with crank link on;The upper side of the other side of pressure plate away from first eccentric wheel is equipped with track assembly, sliding seat is clamped in track assembly, linear slot parallel with track is opened in pressure plate, linear slot is set in the middle of track assembly;The end of crank link away from first eccentric wheel is connected with the bottom surface of sliding seat;Sliding seat is equipped with one-way bearing fixing seat, one-way bearing fixing seat upper surface is equipped with friction disc, the shaft core of one-way bearing fixing seat is set in linear slot after passing through sliding seat. The present application is positioned to friction disc by positioning column, make friction mechanism more accurate, and life is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing equipment, and relates to a friction seat structure for an abrasion testing machine, particularly a single-action specimen friction seat structure for an abrasion testing machine. Background Technology

[0002] The abrasion tester is used to test the abrasion resistance, bending and edge wear properties of material surfaces. It is suitable for quality control of materials such as fabrics, leather, rubber, plastics and paper. It supports abrasion resistance tests of materials after solvent treatment (dry and wet conditions). Vertical load can be applied to the test position of the sample. The abrasion resistance is evaluated by the amount of wear generated by the friction between the sample and sandpaper of a certain grit size.

[0003] In traditional wear testing equipment, the friction seat structure usually adopts a hook-lock positioning structure for positioning, so as to adjust the angle of the friction disc during the reciprocating motion. However, there are problems with return clearance and wear. After long-term use, the positioning accuracy decreases significantly, the stability is poor, it is difficult to achieve high-precision control, and the repeatability and accuracy of the test results are affected. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a friction seat structure for a wear testing machine, so as to realize flexible control between multiple friction modes (such as unidirectional rotational friction, linear friction and combined friction), provide multiple test modes, and improve the detection scenarios of the testing equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A friction seat structure for an abrasion testing machine includes a frame, a friction seat structure mounted on the frame, the friction seat structure including a pressure plate, a motor mounted on the underside of one side of the pressure plate, a first eccentric wheel mounted on the output shaft of the motor, and a crank connecting rod mounted on the first eccentric wheel. A track assembly is provided on the side of the pressure plate away from the first eccentric wheel. The sliding seat is mounted on the track assembly. A straight groove parallel to the track is opened on the pressure plate. The straight groove is located in the middle of the track assembly. The end of the crank connecting rod away from the first eccentric wheel is connected to the bottom surface of the sliding seat. The sliding seat is provided with a one-way bearing fixing seat, the one-way bearing fixing seat is provided with a friction disc on top of the one-way bearing fixing seat, the one-way bearing is provided below the friction disc, the one-way bearing is set in the one-way bearing fixing seat, and the shaft core of the one-way bearing fixing seat passes through the sliding seat and is set in a straight slot. The side of the one-way bearing mounting seat is provided with an inverted L-shaped limiting seat. The bottom end of the inverted L-shaped limiting seat is located on the outer side of the outer wall of the sliding seat. The bottom end of the inverted L-shaped limiting seat is provided with a rubber-coated roller, which is located close to the outer wall of the sliding seat. A rotary positioning mechanism is provided below the limit seat, and the rotary positioning mechanism is set on the bottom surface of the pressure plate.

[0006] Furthermore, in some embodiments, the pressure plate is provided with a positioning post that corresponds to and matches the limiting seat. The positioning post is located on the outer side of the outer wall of the sliding seat and on the straight line of the reciprocating movement of the limiting seat. The positioning post passes through the pressure plate and is connected to the rotary positioning mechanism.

[0007] Furthermore, in some embodiments, the rotary positioning mechanism includes a rotary cylinder and an eccentric wheel structure, with the output end of the rotary cylinder connected to the eccentric wheel structure, which includes a second eccentric wheel, a lifting plate, and an eccentric shaft groove.

[0008] Furthermore, in some embodiments, a movable push block is provided in the groove of the sliding seat away from the front end of the crank connecting rod. A spring is provided at one end of the movable push block near the limiting seat, and a limiting shaft is provided at the other end of the movable push block away from the limiting seat. The limiting shaft protrudes upward toward the one-way bearing fixing seat.

[0009] Furthermore, in some embodiments, the eccentric wheel structure is provided with a lifting plate, the lifting plate is provided with an eccentric shaft groove, and a second eccentric wheel driven to rotate by a rotary positioning mechanism is provided in the eccentric shaft groove; a positioning post is provided on the top of the lifting plate, and guide block assemblies that restrict the up and down movement of the lifting plate are provided on both sides of the lifting plate. The guide block assemblies are located below the pressure plate, and the lifting plate is locked between the guide block assemblies.

[0010] This application achieves flexible control of the friction disc's "single-action rotary friction," "single friction without rotation," and combinations of these two working modes by setting up a rotary positioning mechanism in conjunction with a rubber-coated roller and combining the characteristics of a one-way bearing. This adapts to the high-frequency reciprocating motion rhythm and meets the diverse testing needs of different materials and application scenarios.

[0011] It meets the testing needs of different materials. The rotary positioning mechanism adopts the combination of a rotary cylinder and an eccentric wheel structure, which has a fast response speed and no backlash, overcoming the lag problem of traditional electric hook-lock structures. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the frame of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the crank and connecting rod portion according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the rotating positioning mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the limiting seat portion in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the positioning column portion in an embodiment of the present invention.

[0013] Explanation of markings in the diagram: Frame 11, friction seat structure 14, rotary cylinder 22, eccentric wheel structure 23, spring 24, moving push block 25, limiting shaft 26, pressure plate 51, sliding seat 52, friction disc 53, track 54, rotary positioning mechanism 55, positioning column 56, motor 57, first eccentric wheel 58, crank connecting rod 59, linear slot 61, second eccentric wheel 62, lifting plate 63, eccentric shaft slide groove 64, guide block 65, limiting seat 66, rubber-coated roller 67, one-way bearing fixing seat 68. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To further understand the features, technical means, and specific objectives and functions achieved by this utility model, and to analyze its advantages and spirit, a detailed description of this utility model is provided below in conjunction with the accompanying drawings and specific embodiments.

[0015] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "front," "back," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0016] Please refer to the accompanying drawings. This application includes a frame 11, on which a friction seat structure 14 is provided. The friction seat structure 14 includes a pressure plate 51. A motor 57 is provided on the underside of one side of the pressure plate 51. A first eccentric wheel 58 is provided on the output shaft of the motor 57. A crank connecting rod 59 is provided on the first eccentric wheel 58. A track 54 assembly is provided on the upper side of the pressure plate 51 away from the first eccentric wheel 58. A sliding seat 52 is engaged on the track 54 assembly. A straight groove 61 parallel to the track 54 is opened on the pressure plate 51. The straight groove 61 is located in the middle of the track 54 assembly. The end of the crank connecting rod 59 away from the first eccentric wheel 58 is connected to the bottom surface of the sliding seat 52.

[0017] Furthermore, in one embodiment, the sliding seat 52 is provided with a one-way bearing fixing seat 68, and the one-way bearing fixing seat 68 is provided with a friction disc 53. The shaft core of the one-way bearing fixing seat 68 passes through the sliding seat 52 and is set in the straight slot 61. The first eccentric wheel 58 drives the front end of the crank connecting rod 59 (the end connected to the sliding seat 52) ​​to move back and forth in the straight slot 61, and then the crank connecting rod 59 drives the one-way bearing fixing seat 68 to move back and forth through the sliding seat 52.

[0018] The first eccentric wheel 58 drives the crank connecting rod 59 to slide within the linear slot 61, thereby causing the sliding seat 52 and the one-way bearing fixed seat 68 to reciprocate.

[0019] The side of the one-way bearing fixing seat 68 is provided with an inverted L-shaped limiting seat 66. The bottom end of the inverted L-shape of the limiting seat 66 is located on the outer side of the outer wall of the sliding seat 52. The bottom end of the inverted L-shape of the limiting seat 66 is provided with a rubber-coated roller 67, which is located close to the outer wall of the sliding seat 52.

[0020] Furthermore, in one embodiment, the pressure plate 51 is provided with a positioning post 56 that corresponds to and matches the limiting seat 66. The positioning post 56 is located on the outer side of the outer wall of the sliding seat 52 and is located on the straight line of the reciprocating movement of the limiting seat 66. The positioning post 56 passes through the pressure plate 51 and is connected to the rotary positioning mechanism 55, which is located below the pressure plate 51.

[0021] Furthermore, in one embodiment, the rotary positioning mechanism 55 is provided with a lifting plate 63, and the lifting plate 63 is provided with an eccentric shaft groove 64. The eccentric shaft groove 64 is provided with a second eccentric wheel 62 driven to rotate by the rotary positioning mechanism 55. The upper part of the lifting plate 63 is provided with a positioning post 56, that is, the bottom end of the positioning post 56 after passing through the pressure plate 51 is provided on the lifting plate 63. The two sides of the lifting plate 63 are provided with guide block 65 assemblies that restrict the up and down movement of the lifting plate 63. The guide block 65 assemblies are provided below the pressure plate 51, and the lifting plate 63 is locked between the guide block 65 assemblies.

[0022] The rotary positioning mechanism 55 includes a rotary cylinder 22 and an eccentric wheel structure 23. The output end of the rotary cylinder 22 is connected to the eccentric wheel structure 23, and the rotary cylinder 22 drives the eccentric wheel structure 23 to work. The eccentric wheel structure 23 includes a second eccentric wheel 62, a lifting plate 63, and an eccentric shaft groove 64. The rotary cylinder 22 drives the second eccentric wheel 62, thereby driving the positioning column 56 to move up and down.

[0023] The rotary positioning mechanism 55 drives the second eccentric wheel 62 in the eccentric shaft groove 64 to rotate. The second eccentric wheel 62 drives the lifting plate 63 to move up and down. Then the lifting plate 63 drives the positioning column 56 to move up and down, so that the positioning column 56 blocks or avoids the reciprocating rubber-coated roller 67.

[0024] A one-way bearing is provided below the friction disc 53, and the one-way bearing is installed in the one-way bearing fixing seat 68; A movable push block 25 is provided in the groove of the sliding seat 52 away from the front end of the crank connecting rod 59. A spring 24 is provided at one end of the movable push block 25 near the limit seat 66, and a limit shaft 26 is provided at the other end of the movable push block 25 away from the limit seat 66. The limit shaft 26 protrudes upward toward the friction disc 53.

[0025] The crank connecting rod 59 on the first eccentric wheel 58 drives the sliding seat 52 to move the friction disk 53 backward. The rubber-coated roller 67 on the outer limit seat 66 of the one-way bearing fixing seat 68 disengages from the positioning post 56 of the rotary positioning mechanism 55. The movable push block 25 in the groove of the sliding seat 52 will be pushed by the spring 24 to push the limit shaft 26 in front of the movable push block 25 (below the friction disk 53). Utilizing the characteristics of the one-way bearing in the one-way bearing fixing seat 68, the friction disk 53 is rotated as a whole at a fixed angle.

[0026] When the sliding seat 52 drives the friction disc 53 to move to the front end, the rubber-coated roller 67 on the outer side of the one-way bearing fixing seat 68 contacts the positioning post 56 of the rotary positioning mechanism 55. The rubber-coated roller 67 strikes the positioning post 56, thereby driving the one-way bearing fixing seat 68 to rotate. At this time, due to the characteristics of the one-way bearing in the one-way bearing fixing seat 68, the one-way bearing fixing seat 68 returns to its original position, completing one cycle. Then, this cycle continues to repeat.

[0027] The positioning post 56 of the rotary positioning mechanism 55 is driven by the rotary cylinder 22 to rotate the second eccentric wheel 62, which can make the positioning post 56 descend to be flush with the pressure plate 51. After the positioning post 56 descends, it will avoid the rubber-coated roller 67. At this time, the rubber-coated roller 67 will not contact the positioning post 56, and will not drive the one-way bearing fixing seat 68 to rotate back to its original position. At this time, the friction disc 53 is in single friction and does not rotate.

[0028] Rotary positioning mechanism 55: The positioning pin 56 can position the single-acting friction disc 53, which performs single-acting rotational friction on the test piece, making the different friction modes of the friction mechanism more accurate. The rotary positioning mechanism 55 adopts the cooperation of rotary cylinder 22 and eccentric wheel structure 23, which has fast response speed and no backlash, overcoming the lag problem of traditional hook-lock structure.

[0029] The rotary positioning mechanism 55 drives the one-way bearing fixing seat 68 to return to its original position through the positioning column 56, so that the friction disk 53 is a single-action rotating friction specimen, which can accurately rotate a fixed angle each time it is rubbed; and it can also be set to single friction without rotation, so that the different friction movements or combinations of the friction mechanism (friction disk 53) are more accurate and meet the testing needs of different materials.

[0030] The rotary positioning mechanism 55 controls the lifting plate 63 to rise and fall through the second eccentric wheel 62, and drives the positioning column 56 to intercept / avoid the rubber-coated roller 67.

[0031] The friction disc 53 is located above the one-way bearing mounting seat 68 and is used for transmission friction; the guide block 65 assembly restricts the lifting plate 63 to move only vertically, ensuring the positioning column 56's movement accuracy.

[0032] The above detailed description includes references to the accompanying drawings, which form part of the detailed description. The drawings illustrate, by way of illustration, specific embodiments that can implement the present invention. These embodiments are also referred to herein as "examples". These examples may include other elements besides those shown and described. The inventors also anticipate examples using any combination or arrangement of the shown or described elements, either with respect to a particular example (or one or more aspects thereof) or with respect to other examples shown or described herein (or one or more aspects thereof).

[0033] The above embodiments only illustrate several preferred implementations of this utility model, and their descriptions are relatively specific and detailed. It should be understood that this utility model is not limited to the forms disclosed herein and should not be considered as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or related field techniques or knowledge. This should not be construed as a limitation on the scope of this utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. Such modifications and changes do not depart from the spirit and scope of this utility model, and all fall within the protection scope of the appended claims. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A friction seat structure for an abrasion testing machine, comprising: The frame (11) is characterized in that a friction seat structure (14) is provided on the frame (11), the friction seat structure (14) includes a pressure plate (51), a motor (57) is provided on the underside of one side of the pressure plate (51), a first eccentric wheel (58) is provided on the output shaft of the motor (57), and a crank connecting rod (59) is provided on the first eccentric wheel (58). A track (54) assembly is provided on the side of the pressure plate (51) away from the first eccentric wheel (58). The sliding seat (52) is mounted on the track (54) assembly. A straight groove (61) parallel to the track (54) is provided on the pressure plate (51). The straight groove (61) is located in the middle of the track (54) assembly. The end of the crank connecting rod (59) away from the first eccentric wheel (58) is connected to the bottom surface of the sliding seat (52). The sliding seat (52) is provided with a one-way bearing fixing seat (68), the one-way bearing fixing seat (68) is provided with a friction disc (53), the friction disc (53) is provided with a one-way bearing, the one-way bearing is set in the one-way bearing fixing seat (68), and the shaft core of the one-way bearing fixing seat (68) passes through the sliding seat (52) and is set in the straight slot (61). The side of the one-way bearing fixing seat (68) is provided with an inverted L-shaped limiting seat (66). The bottom end of the inverted L-shape of the limiting seat (66) is located on the outer side of the outer wall of the sliding seat (52). The bottom end of the inverted L-shape of the limiting seat (66) is provided with a rubber-coated roller (67). The rubber-coated roller (67) is located close to the outer wall of the sliding seat (52). The limiting seat (66) is provided with a rotary positioning mechanism (55), which is located on the bottom surface of the pressure plate (51).

2. The friction seat structure of the wear testing machine according to claim 1, characterized in that, The pressure plate (51) is provided with a positioning post (56) that corresponds to and matches the limiting seat (66). The positioning post (56) is located on the outer side of the outer wall of the sliding seat (52) and is located on the straight line of the reciprocating motion of the limiting seat (66). The positioning post (56) passes through the pressure plate (51) and is connected to the rotary positioning mechanism (55).

3. The friction seat structure of the wear testing machine according to claim 1, characterized in that, The rotary positioning mechanism (55) includes a rotary cylinder (22) and an eccentric wheel structure (23). The output end of the rotary cylinder (22) is connected to the eccentric wheel structure (23). The eccentric wheel structure (23) includes a second eccentric wheel (62), a lifting plate (63), and an eccentric shaft groove (64).

4. The friction seat structure of the wear testing machine according to claim 1, characterized in that, The sliding seat (52) is provided with a movable push block (25) in the groove away from the front end of the crank connecting rod (59). A spring (24) is provided at one end of the movable push block (25) near the limit seat (66), and a limit shaft (26) is provided at the other end of the movable push block (25) away from the limit seat (66). The limit shaft (26) protrudes upward toward the one-way bearing fixing seat (68).

5. The friction seat structure of a wear testing machine according to claim 3, characterized in that, The eccentric wheel structure (23) is provided with a lifting plate (63), and the lifting plate (63) is provided with an eccentric shaft groove (64). The eccentric shaft groove (64) is provided with a rotary positioning mechanism (55) to drive the second eccentric wheel (62) to rotate. The lifting plate (63) is provided with a positioning column (56) on the top. The lifting plate (63) is provided with guide block (65) assemblies on both sides to restrict the up and down movement of the lifting plate (63). The guide block (65) assemblies are located below the pressure plate (51), and the lifting plate (63) is locked between the guide block (65) assemblies.

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