A magnetic scale testing device

Abstract

The present invention discloses a magnetic scale test device, and the present invention relates to the field of magnetic scale test technology. The magnetic scale test device comprises a test table, and a plurality of placement tables for simultaneously placing multiple magnetic scales and having slots on the upper part are fixedly connected at equal intervals on the front and rear ends of the test table, and each placement table is provided with a positioning mechanism for limiting the magnetic scales after placement, and a driving mechanism for driving a dynamic wear mechanism to run simultaneously is installed on the right end face of the test table. The present invention cooperates with an intermittent driving component in the dynamic wear mechanism with a prismatic frame to automatically switch abrasive plates of different roughness to contact the surface of the magnetic scale, and automatically adjusts the force between the abrasive plate and the magnetic scale by combining a triangular extrusion plate and an arch frame, and applies different pressures on multiple magnetic scales, which can more realistically simulate a variety of use conditions, and obtain wear data closer to actual working conditions, thereby improving the accuracy of the test results, and significantly improving the test efficiency and data richness.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic scale testing, and in particular to a magnetic scale testing device. Background Art

[0002] A magnetic scale is a sensor system used to accurately measure position and speed. It uses changes in the magnetic field to detect the position of a moving object. A magnetic scale is usually composed of two main parts: a magnetic scale and a read head. A magnetic scale is usually used for a long time. During this process, there will be relative movement between the surface of the magnetic scale and the read head, which may cause wear on the surface of the magnetic scale, thereby affecting the accuracy and reliability of the measurement. As a key component for position detection and displacement measurement, the wear resistance of the magnetic scale surface is one of the most important characteristics. The wear resistance test can be carried out by different methods, depending on the specific material and use environment of the magnetic scale. The common test method is to rub the surface of the magnetic scale with a standard abrasive under a certain pressure and friction force, and then measure the degree of wear on the surface.

[0003] However, traditional testing equipment can only use a single type of abrasive and a fixed friction force. Once the test begins, the abrasive type and friction force are usually fixed. This rigid test condition makes it impossible to truly simulate the various wear conditions that the magnetic scale may encounter in different usage environments, resulting in the test results being inconsistent with actual usage conditions, affecting the comprehensive evaluation test of the magnetic scale's wear resistance, and further affecting the accuracy of the test results.

[0004] When it is necessary to test the wear resistance of the magnetic scale under different friction conditions, traditional equipment can only stop the test and replace the abrasive or adjust the pressure, which will slow down the test speed. Summary of the invention

[0005] The present invention provides a magnetic scale testing device, which solves the problem that traditional testing equipment can usually only use a single type of abrasive and a fixed friction force. This rigid test condition cannot truly simulate the wear of the magnetic scale under different usage environments, resulting in inaccurate test results and affecting the comprehensive evaluation of the wear resistance of the magnetic scale. In addition, when testing different friction conditions, it is necessary to stop the machine to replace the abrasive or adjust the pressure, which further slows down the test speed.

[0006] A magnetic scale testing device provided by the present invention comprises a testing table, wherein a plurality of placing tables with slots on the upper part for simultaneously placing a plurality of magnetic scales are fixedly connected at equal intervals on the front and rear ends of the upper end surface of the testing table, each of the placing tables is provided with a locking mechanism for limiting the magnetic scales after placement, a plurality of sliding rod groups corresponding to the placing tables and respectively located directly above the placing tables are fixedly connected at equal intervals on the upper end surface of the testing table through a supporting plate, a dynamic wear mechanism for automatically switching abrasives of different friction degrees to contact the magnetic scale so as to facilitate wear testing of the magnetic scale under different friction coefficients is provided on the outside of each sliding rod group, the dynamic wear mechanism comprises a mounting slide plate slidably connected to the outside of the sliding rod group, a mounting frame slidably sleeved on the outside of the mounting slide plate, and a mounting mechanism penetrating the mounting slide plate. A rotating shaft rotatably connected between two vertical sections of the mounting frame, a prismatic frame fixedly connected to the outside of the rotating shaft through spoke rods, a plurality of abrasive plates equidistantly and circumferentially embedded and fixedly connected to the prismatic frame, an intermittent driving assembly commonly arranged on the front of the mounting frame and the test bench for driving the rotating shaft to rotate intermittently so as to adjust the abrasive plates to contact the magnetic scale in sequence, and a locking assembly commonly arranged between the rotating shaft and the test bench for limiting the rotating shaft, the friction coefficient on the surface of each abrasive plate is different, a dynamic pressure regulating mechanism for automatically adjusting the contact pressure between the dynamic wear mechanism and the magnetic scale is commonly installed between the two lateral support plates and the dynamic wear mechanism, and a driving mechanism for driving the dynamic wear mechanism to run simultaneously is installed on the right end surface of the test bench.

[0007] In a possible implementation, the dynamic pressure regulating mechanism includes a strip plate fixedly connected to opposite sides of two support plates, a plurality of triangular extrusion plates are equidistantly fixedly connected to the lower end surface of the strip plate, a strip frame is symmetrically fixedly connected to the upper end surface of the mounting frame, a slider is slidably connected to the strip frame, a top spring is fixedly connected between the slider and the strip frame, and an arch frame cooperating with the triangular extrusion plate is fixedly connected to the back sides of the two sliders.

[0008] In a possible implementation, the height of the triangular extruded plates arranged along the front-to-rear longitudinal direction gradually increases from the back to the front.

[0009] In one possible implementation, the intermittent drive assembly includes a ratchet fixedly connected to the outside of the rotating shaft, a gear ring rotatably connected to the front end face of the mounting frame, and an elastic clamping plate fixedly connected to the inner wall of the gear ring and engaged with the ratchet, the front end face of the mounting frame is fixedly connected to a slip ring, a push rod is slidably connected to the inside of the slip ring, a return spring is fixedly connected between the push rod and the slip ring, a rack segment meshing with the gear ring is fixedly connected to the lower portion of the push rod, and a top plate cooperating with the push rod is fixedly connected to the left portion of the upper end face of the test bench.

[0010] In one possible implementation, the locking assembly includes an annular disk fixedly connected to the outside of the rotating shaft, a plurality of slots are equidistantly formed on the circumferential outer wall of the annular disk, the front end face of the mounting frame is slidably connected to a sliding rod via an ear rod, a V-shaped claw that cooperates with the slot is fixedly connected to the upper end of the sliding rod, and a trapezoidal bar that cooperates with the sliding rod is fixedly connected to the upper end face of the test bench.

[0011] In a possible implementation, guide grooves are provided on both left and right sides of the mounting slide, a guide column slidably disposed in the guide groove is fixedly connected to one side of the mounting frame close to the guide groove, and a limit spring is fixedly connected between the guide column and the guide groove.

[0012] In one possible implementation, the driving mechanism includes a support platform fixedly connected to the right part of the end surface of the test bench, the upper end surface of the support platform is rotatably connected with a plurality of rotating shafts corresponding to the position of the placement platform at equal intervals, the lower parts of the rotating shafts are fixedly connected with lower gears, and the upper parts of the rotating shafts are fixedly connected with upper gears, and the diameters of the upper gears arranged from back to front gradually increase, the upper end surface of the support platform is slidably connected with an electric skateboard, the left end surface of the electric skateboard is fixedly connected with a No. 1 rack meshing with the lower gear, and the front end surface of the mounting skateboard is fixedly connected with a No. 2 rack located on its right and meshing with the upper gear through an L-shaped connecting rod.

[0013] In a possible implementation, the locking mechanism includes two installation grooves symmetrically opened in the placement table and a pressure rod that passes through and is slidably connected to the placement table and whose lower end extends into the installation groove. A folding rod is symmetrically hinged between the left and right groove walls of the installation groove. A clamping block is fixedly connected to the upper end of the folding rod, and a spring telescopic column is fixedly connected to the lower end of the folding rod. The end of the spring telescopic column close to the pressure rod is hinged to the lower end of the pressure rod.

[0014] It can be seen from the above technical solutions that the present invention has the following advantages:

[0015] In the present invention, during the test, the intermittent drive component in the dynamic wear mechanism cooperates with the prismatic frame, and abrasive plates with different roughness are automatically switched to contact the surface of the magnetic scale in turn to perform dynamic wear testing. This can simulate various wear conditions that the magnetic scale may encounter in actual work, and obtain wear data that is closer to the actual working conditions. The diversified test conditions can more accurately test the wear resistance of the magnetic scale, and at the same time improve the test efficiency.

[0016] In the present invention, the force between the abrasive plate and the magnetic scale is automatically adjusted by combining the triangular extrusion plate and the arch frame during the magnetic scale wear test, and different pressures are applied to each magnetic scale when multiple magnetic scales are tested synchronously. This can more realistically simulate the diverse wear conditions that the magnetic scale may experience under different usage conditions, improve the accuracy of the test results, and apply different pressures on multiple magnetic scales to simulate different working conditions at the same time, so that more types of wear data can be obtained in one test, thereby improving the test efficiency and data richness.

[0017] In the present invention, by automatically replacing different abrasive plates during testing and dynamically adjusting the wear test conditions of the test pressure, the downtime of the test is reduced and the continuity of the test process can be ensured, thereby greatly improving the test efficiency.

[0018] In the present invention, the spring telescopic column, the folding rod, the pressure rod and the clamping block in the clamping mechanism are combined to quickly clamp and limit the magnetic scale during testing, ensuring that each magnetic scale is firmly fixed at a specified position, thereby ensuring the stability of the magnetic scale during testing.

[0019] In the present invention, a plurality of abrasive plates are driven to run simultaneously by a driving mechanism, and the movement speed of each abrasive plate can be tested simultaneously at different speeds, so that more diversified data can be obtained, and multiple groups of data can be obtained simultaneously in one test, thereby improving the test efficiency, thereby more comprehensively evaluating the wear resistance of the magnetic scale under different working conditions and improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a schematic structural diagram of the magnetic scale testing device provided by the present invention.

[0022] Figure 2 This is a schematic diagram of the partial structural installation of the dynamic wear mechanism provided by the present invention.

[0023] Figure 3 The present invention provides Figure 2 Schematic diagram of the enlarged structure of part A in FIG.

[0024] Figure 4 This is a schematic diagram of the partial connection structure between the dynamic wear mechanism and the dynamic pressure regulating mechanism provided by the present invention.

[0025] Figure 5 A schematic cross-sectional view from a front perspective of the dynamic pressure regulating mechanism and the mounting slide plate connection structure provided by the present invention.

[0026] Figure 6 This is a schematic diagram of the installation structure of the drive mechanism provided by the present invention.

[0027] Figure 7 This is a schematic cross-sectional view of a portion of the structure of the driving mechanism provided by the present invention.

[0028] Figure 8 This is a schematic diagram of the installation structure of the locking mechanism provided by the present invention.

[0029] The above drawings include the following reference numerals:

[0030] 1. Test bench; 2. Placement table; 3. Clamping mechanism; 31. Mounting slot; 32. Pressure rod; 33. Folding rod; 34. Clamping block; 35. Spring telescopic column; 4. Sliding rod group; 5. Dynamic wear mechanism; 51. Mounting slide plate; 52. Mounting frame; 53. Rotating shaft; 54. Prismatic frame; 55. Abrasive plate; 56. Intermittent drive assembly; 561. Ratchet; 562. Gear ring; 563. Elastic clamping plate; 564. Slip ring; 565. Ejector rod; 566. Reset spring; 567. Rack segment; 568. Ejector plate; 5 7. Stop assembly; 571. Annular disk; 572. Slot; 573. Slide bar; 574. V-shaped claw; 575. Trapezoidal bar; 6. Dynamic pressure regulating mechanism; 61. Strip plate; 62. Triangular extrusion plate; 63. Strip frame; 64. Slider; 65. Top spring; 66. Arch frame; 7. Driving mechanism; 71. Support platform; 72. Rotating shaft; 73. Lower gear; 74. Upper gear; 75. Electric skateboard; 76. Rack No. 1; 77. Rack No. 2; 8. Guide groove; 9. Guide column; 10. Limit spring. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] See also Figure 1The present invention provides a technical solution: a magnetic scale testing device, comprising a test bench 1, a plurality of placement tables 2 for simultaneously placing a plurality of magnetic scales and having grooves on the upper part are fixedly connected at equal intervals on the front and rear of the upper end surface of the test bench 1, each placement table 2 is provided with a positioning mechanism 3 for limiting the magnetic scale after placement, a plurality of slide bar groups 4 corresponding to the placement tables 2 and respectively located directly above the placement tables 2 are fixedly connected at equal intervals on the upper end surface of the test bench 1 through a support plate, a dynamic wear mechanism 5 for automatically switching abrasives of different friction degrees to contact the magnetic scale so as to facilitate wear testing of the magnetic scale under different friction coefficients is arranged on the outside of each slide bar group 4, a dynamic pressure regulating mechanism 6 for automatically adjusting the top contact pressure between the dynamic wear mechanism 5 and the magnetic scale is jointly installed between the two lateral support plates and the dynamic wear mechanism 5, and a driving mechanism 7 for driving the dynamic wear mechanism 5 to run simultaneously is installed on the right part of the upper end surface of the test bench 1.

[0033] See also Figure 2 and Figure 8 In this embodiment, the locking mechanism 3 includes two installation grooves 31 symmetrically opened in the placing table 2 and a pressure rod 32 that penetrates and slides on the placing table 2 and extends into the installation groove 31 at the lower end. A folding rod 33 is hinged symmetrically between the left and right groove walls of the installation groove 31. A clamping block 34 is fixedly connected to the upper end of the folding rod 33, and a spring telescopic column 35 is fixedly connected to the lower end of the folding rod 33. One end of the spring telescopic column 35 close to the pressure rod 32 is hinged to the lower end of the pressure rod 32.

[0034] The two spring telescopic columns 35 at the front and rear of the locking mechanism 3 are initially in an inclined state where the side close to the pressure rod 32 is high and the side away from the pressure rod 32 is low. At this time, the upper end of the pressure rod 32 extends out of the upper position of the placement table 2; the magnetic scale is aligned with the slot on the upper part of the placement table 2 and inserted into it, the lower part of the magnetic scale contacts the upper end of the pressure rod 32, and then the magnetic scale is manually pressed downward to move downward, and the magnetic scale then presses the pressure rod 32 downward, and the pressure rod 32 then drives the spring telescopic column 35 downward, and the spring telescopic column 35 then drives the folding rod 33 to rotate, so that the folding rod 33 rotates around the hinge between it and the mounting groove 31 The folding rod 33 then drives the clamping block 34 to rotate until the clamping block 34 rotates and contacts the upper part of the magnetic scale to clamp it. At this time, the front and rear spring telescopic columns 35 are pushed and rotated to an inclined state where the side close to the pressure rod 32 is lower and the side away from the pressure rod 32 is higher. The pressure rod 32 moves down and is completely retracted into the placement table 2. The front and rear spring telescopic columns 35 cooperate with each other to push the folding rod 33 and drive the clamping block 34 to tightly contact the upper part of the magnetic scale, so that multiple magnetic scales can be quickly limited. Then the driving mechanism 7 can be controlled to drive the dynamic wear mechanism 5 to run and test the magnetic scale.

[0035] After the test of the magnetic scale is completed, the pressure rod 32 is manually pushed upward to move up. The pressure rod 32 moves up and then drives the folding rod 33 to rotate through the spring telescopic column 35. The folding rod 33 then drives the clamping block 34 to rotate, so that the clamping block 34 is moved away from the magnetic scale. At the same time, the pressure rod 32 moving upward will also contact the lower part of the magnetic scale and push the magnetic scale upward, so as to facilitate the rapid removal of the magnetic scale after the test.

[0036] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the dynamic wear mechanism 5 includes a mounting slide 51 slidably connected to the outside of the slide bar group 4, a mounting frame 52 slidably sleeved on the outside of the mounting slide 51, a rotating shaft 53 that penetrates and rotates between two vertical sections of the mounting frame 52, a prismatic frame 54 that is fixedly connected to the outside of the rotating shaft 53 through a spoke rod, a plurality of abrasive plates 55 that are equidistantly circumferentially embedded and fixedly connected to the prismatic frame 54, and a plurality of abrasive plates 55 that are commonly arranged at the front of the mounting frame 52 and on the test bench 1 for driving the rotating shaft 53 to rotate intermittently so as to adjust the interval between the abrasive plates 55 contacting the magnetic scale in sequence. The drive assembly 56 and the locking assembly 57 arranged between the rotating shaft 53 and the test bench 1 for limiting the rotating shaft 53, the friction coefficient on the surface of each abrasive plate 55 is different, the left and right sides of the mounting slide 51 are provided with guide grooves 8, and the side of the mounting frame 52 close to the guide groove 8 is fixedly connected with a guide column 9 slidably set in the guide groove 8, and the guide column 9 and the guide groove 8 are jointly fixedly connected with a limiting spring 10, and the mounting frame 52 consists of a rectangular frame sleeved on the outside of the mounting slide 51 and two L-shaped rods fixedly connected to the front and rear sides of the rectangular frame.

[0037] See also Figure 2 and Figure 3 The intermittent drive assembly 56 includes a ratchet 561 fixedly connected to the outside of the rotating shaft 53, a gear ring 562 rotatably connected to the front end surface of the mounting frame 52, and an elastic clamping plate 563 fixedly connected to the inner wall of the gear ring 562 and engaged with the ratchet 561. A slip ring 564 is fixedly connected to the front end surface of the mounting frame 52, a push rod 565 is slidably connected inside the slip ring 564, a return spring 566 is fixedly connected between the push rod 565 and the slip ring 564, a rack segment 567 meshing with the gear ring 562 is fixedly connected to the lower part of the push rod 565, and a top plate 568 cooperating with the push rod 565 is fixedly connected to the left part of the upper end surface of the test bench 1.

[0038] See also Figure 2 and Figure 3The locking assembly 57 includes an annular disk 571 fixedly connected to the outside of the rotating shaft 53, and a plurality of slots 572 are equidistantly provided on the circumferential outer wall of the annular disk 571. The front end surface of the mounting frame 52 is slidably connected to a slide rod 573 through an ear rod, and a V-shaped claw 574 cooperating with the slot 572 is fixedly connected to the upper end of the slide rod 573. A trapezoidal bar 575 for cooperating with the slide rod 573 is fixedly connected to the upper end surface of the test bench 1.

[0039] By controlling the operation of the driving mechanism 7, the mounting slide 51 is driven to reciprocate horizontally on the slide bar group 4. The mounting slide 51 then drives the abrasive plate 55 at the bottom to reciprocate along the upper end surface of the magnetic scale through the mounting frame 52, the rotating shaft 53 and the prismatic frame 54 to rub the upper surface of the magnetic scale. When the abrasive plate 55 moves directly above the placement table 2, the lower end of the slide bar 573 touches the upper end surface of the trapezoidal bar 575. At this time, the V-shaped claw 574 is engaged in the groove 572, so that the annular disk 571 is stuck, and the rotating shaft 53 and the prismatic frame 54 cannot rotate, thereby preventing the prismatic frame 54 from rotating during the wear test of the magnetic scale, ensuring that the abrasive plate 55 at the bottom is always in contact with the upper surface of the magnetic scale.

[0040] When the installation slide 51 drives the prismatic frame 54 to move leftward and out from above the placement table 2, the installation frame 52 drives the slide bar 573 to move away from the trapezoidal bar 575 to the left, and then the slide bar 573 loses the push of the trapezoidal bar 575 and moves downward and drives the V-shaped claw 574 to move downward, and the V-shaped claw 574 separates from the groove 572, so that the V-shaped claw 574 stops limiting the annular disk 571, and then the installation frame 52 that continues to move leftward drives the push rod 565 to contact the top plate 56 8, then the push rod 565 moves rightward relative to the mounting frame 52 and drives the rack segment 567 to move synchronously, the rack segment 567 then drives the gear ring 562 to rotate, the gear ring 562 then drives the elastic clamping plate 563 to engage with the ratchet 561 and then drives the ratchet 561 to rotate, the ratchet 561 then drives the prismatic frame 54 to rotate an angle through the rotating shaft 53 and the spoke rod, and the prismatic frame 54 drives the abrasive plate 55 of the next roughness to move to its lower position.

[0041] Then the mounting slide plate 51 starts to move to the right, and drives the mounting frame 52 to move to the right synchronously. The mounting frame 52 then drives the push rod 565 to separate from the top plate 568. Then the return spring 566 in the compressed state is restored and stretched to push the push rod 565 to move to the left. The push rod 565 then drives the rack segment 567 to move to the left. The rack segment 567 then drives the gear ring 562 to reverse and reset. During the reverse process of the gear ring 562, the elastic clamping plate 563 slides on the surface of the ratchet 561, and the gear ring 562 reverses. During the rotation process, the ratchet wheel 561 is in a stationary state. When the mounting frame 52 moves to the right and drives the slide bar 573 to move to the right so that its lower end contacts the trapezoidal bar 575, the left inclined surface of the trapezoidal bar 575 will squeeze the lower end of the slide bar 573 to move it upward, and the slide bar 573 then drives the V-shaped claw 574 to move upward. When the slide bar 573 moves completely to the upper end surface of the trapezoidal bar 575, the V-shaped claw 574 moves upward to the position where it touches the top of the slot 572, thereby locking the annular disk 571 to a limit.

[0042] Then the installation slide 51 drives the abrasive plate 55 adjusted and moved at the lower position of the prismatic frame 54 to slide frictionally on the magnetic scale through the installation frame 52 and the prismatic frame 54, so that the abrasive plate 55 of another roughness can be switched to perform a wear test on the surface of the magnetic scale until the abrasive plate 55 moves to the right to the right part of the upper end surface of the magnetic scale. Then the installation slide 51 starts to move left again, and then drives the intermittent drive assembly 56 to move to the left position and repeats the above steps of switching the position of the abrasive plate 55. By automatically switching the abrasive plates 55 of different roughness to contact the surface of the magnetic scale in turn for dynamic wear testing, it can simulate various wear conditions that the magnetic scale may encounter in actual work, and obtain wear data that is closer to the actual working conditions. The diversified test conditions can more accurately test the wear resistance of the magnetic scale, and at the same time improve the efficiency of the test.

[0043] See also Figure 4 and Figure 5 In this embodiment, the dynamic pressure regulating mechanism 6 includes a strip plate 61 fixedly connected to the opposite sides of the two support plates, and a plurality of triangular extrusion plates 62 are fixedly connected to the lower end surface of the strip plate 61 at equal distances, and a strip frame 63 is fixedly connected to the upper end surface of the mounting frame 52 symmetrically on the left and right, and a slider 64 is slidably connected in the strip frame 63, and a top spring 65 is fixedly connected between the slider 64 and the strip frame 63, and an arch frame 66 cooperating with the triangular extrusion plate 62 is fixedly connected to the back sides of the two sliders 64, and the height of the triangular extrusion plates 62 arranged along the front-to-back longitudinal direction gradually increases from back to front.

[0044] The mounting slide 51 drives the mounting frame 52 to move back and forth laterally. At the same time, the mounting frame 52 also drives the arch frame 66 to move laterally synchronously through the bar frame 63. When the arch frame 66 moves to conflict with the lower inclined surface of the triangular extrusion plate 62, the lower inclined surface of the triangular extrusion plate 62 will squeeze the arch frame 66 to move it downward. The arch frame 66 then presses the top spring 65 downward through the slider 64. The top spring 65 then presses the mounting frame 52 downward through the bar frame 63. The mounting frame 52 then presses the abrasive plate 55 located at the bottom through the rotating shaft 53 and the prismatic frame 54. When the arch frame 66 is dislocated and separated from the triangular extrusion plate 62, the pressure of the abrasive plate 55 on the magnetic scale will change to another force, thereby The friction force between the abrasive plate 55 and the magnetic scale is adjusted, and the pressure force of the abrasive plate 55 on each magnetic scale during the test is different through the different heights of the triangular extrusion plates 62 arranged longitudinally in the front and rear. By automatically adjusting the force between the abrasive plate 55 and the magnetic scale during the magnetic scale wear test and applying different pressures to each magnetic scale when testing multiple magnetic scales simultaneously, it is possible to more realistically simulate the diverse wear conditions that the magnetic scale may experience under different usage conditions, thereby improving the accuracy of the test results. In addition, by applying different pressures on multiple magnetic scales, different working conditions can be simulated at the same time, so that more types of wear data can be obtained in one test, thereby improving the test efficiency and data richness.

[0045] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 In this embodiment, the driving mechanism 7 includes a support platform 71 fixedly connected to the right part of the upper end surface of the test bench 1, and the upper end surface of the support platform 71 is rotatably connected to a plurality of rotating shafts 72 corresponding to the position of the placement platform 2 at equal intervals, and the lower part of the rotating shaft 72 is fixedly connected to a lower gear 73, and the upper part of the rotating shaft 72 is fixedly connected to an upper gear 74. The diameter of the upper gear 74 arranged from the back to the front gradually increases, and the upper end surface of the support platform 71 is slidably connected to an electric slide 75, and the left end surface of the electric slide 75 is fixedly connected to a No. 1 rack 76 meshing with the lower gear 73, and the front end surface of the mounting slide 51 is fixedly connected to a No. 2 rack 77 located on its right and meshing with the upper gear 74 through an L-shaped connecting rod.

[0046] When the driving mechanism 7 is controlled to operate: first, the electric slide 75 is controlled to reciprocate laterally on the support 71, and the electric slide 75 then drives the No. 1 rack 76 to move synchronously, and the No. 1 rack 76 then drives the rotating shaft 72 to reciprocate through the lower gear 73 meshing therewith, and the rotating shaft 72 then drives the upper gear 74 to rotate, and the upper gear 74 then drives the No. 2 rack 77 to reciprocate laterally. Since the diameter size of each upper gear 74 is different, the movement speed of each No. 2 rack 77 is also different at the same rotation speed. During the reciprocating movement of the No. 2 rack 77, the mounting slide 51 is driven to reciprocate through the L-shaped connecting rod, so that the movement speed of each mounting slide 51 is different, and then the speed of each abrasive plate 55 tested on the magnetic scale is different. By controlling the abrasive plate 55 to test the magnetic scale at different speeds at the same time, the wear of the magnetic scale under different speed conditions can be tested at the same time, so as to obtain more diversified data, further improve the reliability and comprehensiveness of the test results, and use a single drive source to reduce the complexity of the equipment.

[0047] During operation, the magnetic scale is first placed on the placement table 2, and then the magnetic scale is clamped and limited by the locking mechanism 3, and then the driving mechanism 7 is controlled to drive the dynamic wear mechanism 5 to operate, and the dynamic wear mechanism 5 is used to perform wear tests on the surface of the magnetic scale under different friction degrees. At the same time, the dynamic pressure regulating mechanism 6 runs synchronously with the dynamic wear mechanism 5, and then adjusts the friction force between the abrasive plate 55 and the magnetic scale during the test. Finally, the movement speed of multiple dynamic wear mechanisms 5 during the test is adjusted again by the driving mechanism 7, so that the abrasive plate 55 can be controlled to test the magnetic scale at different speeds.

[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are 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, and do not indicate or imply 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.

[0049] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic scale test device, comprising a test bench, characterized in that: A plurality of placement tables with slots on the upper part for placing a plurality of magnetic scales at the same time are fixedly connected at equal intervals on the upper surface of the test table, each of which is provided with a positioning mechanism for limiting the magnetic scale after placement, a plurality of slide bar groups corresponding to the placement tables and respectively located directly above the placement tables are fixedly connected at equal intervals on the upper surface of the test table through a support plate, and a dynamic wear mechanism for automatically switching abrasives with different friction degrees to contact the magnetic scale so as to facilitate wear testing of the magnetic scale under different friction coefficients is provided on the outside of each slide bar group; The dynamic wear mechanism comprises: A mounting slide plate slidably connected to the outside of the slide bar group, a mounting frame slidably sleeved on the outside of the mounting slide plate, a rotating shaft rotatably connected between two vertical sections of the mounting frame, a prismatic frame fixedly connected to the outside of the rotating shaft through spoke rods, a plurality of abrasive plates equidistantly embedded and fixedly connected to the prismatic frame, an intermittent driving assembly commonly arranged on the front of the mounting frame and the test bench for driving the rotating shaft to intermittently rotate so as to adjust the abrasive plates to contact the magnetic scale in sequence, and a locking assembly arranged between the rotating shaft and the test bench for limiting the rotating shaft, wherein the friction coefficient on the surface of each abrasive plate is different; A dynamic pressure regulating mechanism for automatically adjusting the contact pressure between the dynamic wear mechanism and the magnetic scale is installed between the two horizontal support plates and the dynamic wear mechanism, and a driving mechanism for driving the dynamic wear mechanism to run simultaneously is installed on the right end surface of the test bench; The dynamic pressure regulating mechanism comprises a strip plate fixedly connected to opposite sides of two support plates, a plurality of triangular extrusion plates are fixedly connected to the lower end surface of the strip plate at equal intervals, and the height of the triangular extrusion plates arranged along the front-to-back longitudinal direction gradually increases from the back to the front; The locking mechanism includes two installation grooves symmetrically opened in the placing table and a pressure rod that penetrates and slides on the placing table and extends into the installation groove at the lower end. A folding rod is symmetrically hinged between the left and right groove walls of the installation groove. A clamping block is fixedly connected to the upper end of the folding rod, and a spring telescopic column is fixedly connected to the lower end of the folding rod. The end of the spring telescopic column close to the pressure rod is hinged to the lower end of the pressure rod.

2. A magnetic scale testing device according to claim 1, characterized in that: The upper end surface of the mounting frame is symmetrically fixedly connected with a strip frame, the strip frame is slidably connected with a slider, a top spring is fixedly connected between the slider and the strip frame, and the two sliders are fixedly connected with an arch frame matched with a triangular extrusion plate on the back sides.

3. A magnetic scale testing device according to claim 1, characterized in that: The intermittent drive assembly includes a ratchet fixedly connected to the outside of the rotating shaft, a gear ring rotatably connected to the front end face of the mounting frame, and an elastic clamping plate fixedly connected to the inner wall of the gear ring and engaged with the ratchet; the front end face of the mounting frame is fixedly connected to a slip ring, a push rod is slidably connected to the inside of the slip ring, a return spring is fixedly connected between the push rod and the slip ring, a rack section meshing with the gear ring is fixedly connected to the lower part of the push rod, and a push plate cooperating with the push rod is fixedly connected to the left part of the end face of the test bench.

4. A magnetic scale testing device according to claim 1, characterized in that: The locking assembly includes an annular disk fixedly connected to the outside of the rotating shaft, a plurality of slots are equidistantly provided on the circumferential outer wall of the annular disk, a sliding rod is slidably connected to the front end surface of the mounting frame through an ear rod, a V-shaped claw cooperating with the slot is fixedly connected to the upper end of the sliding rod, and a trapezoidal bar for cooperating with the sliding rod is fixedly connected to the end surface of the test bench.

5. A magnetic scale testing device according to claim 1, characterized in that: The left and right sides of the installation slide plate are provided with guide grooves, and the side of the installation frame close to the guide groove is fixedly connected with a guide column slidably arranged in the guide groove, and a limit spring is fixedly connected between the guide column and the guide groove.

6. A magnetic scale testing device according to claim 1, characterized in that: The driving mechanism includes a support platform fixedly connected to the right part of the end surface of the test bench, the end surface of the support platform is equidistantly rotatably connected with a plurality of rotating shafts corresponding to the position of the placement platform, the lower parts of the rotating shafts are fixedly connected with lower gears, and the upper parts of the rotating shafts are fixedly connected with upper gears, and the diameters of the upper gears arranged from back to front gradually increase, the upper surface of the support platform is slidably connected with an electric skateboard, the left end surface of the electric skateboard is fixedly connected with a No. 1 rack meshing with the lower gear, and the front end surface of the mounting skateboard is fixedly connected with a No. 2 rack located on its right and meshing with the upper gear through an L-shaped connecting rod.

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