A spring disk elasticity testing device

Abstract

The present invention discloses a spring disk elastic force testing device, belonging to the technical field of elastic force testing devices. A support component, a support block and a limit component; the support component is installed with a lift, a test component is installed on the lift, and the top of the spring disk is installed on the test component; the limit component includes a limit column and a plurality of top blocks, and the limit column is inserted into the spring inner ring of the spring disk; two groups of second electromagnets and two groups of connecting blocks are fixedly installed in the limit column, and a guide rod is slidably connected to the connecting block, and a second armature and a push block are installed on the guide rod, and the top block is slidably connected to the limit column, and two groups of symmetrically distributed buffer plates are slidably connected in the top block, and the buffer plate is tilted. When the spring is detached, the top block is quickly ejected to limit the oscillating displacement of the detached spring in the horizontal direction, accelerate the recovery of the spring to a stable state, and also effectively protect the limit column, reducing the risk of bending of the limit column caused by collision.

Description

Technical Field

[0001] The present invention relates to the technical field of elastic force testing equipment, and more specifically, to a spring disk elastic force testing equipment. Background Art

[0002] The spring disk is composed of several parallel springs and two sets of ring plates. The two ends of the several springs are connected and fixed to the tube body or connecting ball column on the ring plate by riveting or other methods, such as Figure 1 As shown, spring discs are often used in the automotive and other fields due to their excellent elastic properties.

[0003] Existing spring discs often test elastic properties by stretching or compressing them. In the spring disc test, the spring is not directly fixed to the test equipment, but is connected to the test equipment through upper and lower ring plates. As a result, when stretched or compressed, there is a risk that the spring will be detached from the upper and lower ring plates. The detached spring will be ejected, thus posing a certain threat to surrounding equipment and testers. Existing measures are mostly to add isolation plates for protection, but the isolation plates only isolate the ejected springs to a certain extent, and cannot quickly stabilize and buffer the detached springs from the ejection source. In view of this, we propose a spring disc elastic force test device. Summary of the invention

[0004] The purpose of the present invention is to provide a spring disk elastic force testing device, which solves the technical problem in the prior art that a detached spring cannot be quickly stabilized and buffered during the spring disk elastic force testing.

[0005] The embodiment of the present invention provides a spring disk elastic force testing device, including a support assembly, a support block and a limit assembly;

[0006] The support block is provided with a plurality of guide holes, the axes of the guide holes correspond one to one with the axes of the through holes on the ring plate of the spring disk, and the spring disk and the support block are both mounted on the support assembly;

[0007] The support assembly is equipped with an elevator, the elevator is equipped with a test assembly, and the top of the spring disk is equipped with the test assembly;

[0008] The limiting assembly includes a limiting column and a plurality of top blocks, the limiting column is plugged into the guide hole, the limiting column passes through the guide hole and is inserted into the spring inner ring of the corresponding spring disk;

[0009] The limiting column is hollow inside, and two groups of second electromagnets and two groups of connecting blocks are fixedly installed in the limiting column. A guide rod is slidably connected to the connecting block. A second armature is fixedly installed at one end of the guide rod, and a push block is fixedly connected to the other end of the guide rod. The second armature is located at one end of the guide rod close to the second electromagnet, and a plurality of adjustment holes are opened on the limiting column;

[0010] The top block is slidably connected to the limiting column, one end of the first elastic member is fixedly connected to the top block, and the other end is fixedly connected to the limiting column;

[0011] Two groups of symmetrically distributed buffer plates are slidably connected in the top block, the buffer plates are tilted, one end of the second elastic member is fixedly connected to the buffer plate, and the other end is fixedly connected to the top block;

[0012] By energizing the second electromagnet, the second armature moves and is adsorbed on the second electromagnet, so that the push block pushes the buffer plate to drive the push block to push out the limit column.

[0013] Preferably, both ends of the top block are inclined surfaces, and the distance between the top holding surface of the top block and the axis of the limiting column decreases from the middle to the two ends.

[0014] Preferably, along the diameter direction of the limiting column, the distance between the two buffer plates in the same group gradually increases, and the elastic force of the second elastic member in the same group is greater than the elastic force of the first elastic member.

[0015] Preferably, the support assembly includes a support box and a double threaded rod, a support column is fixedly installed in the support box, a limit block is fixedly installed on the support column, a support plate is slidably connected to the support column, and the support plate is located directly above the limit block;

[0016] A first electromagnet is fixedly installed on the support plate, a first armature is fixedly installed on the bottom of the limit column, a test hole is opened on the support box, the axes of the test hole, the support column and the first electromagnet are colinearly arranged, two groups of symmetrically distributed adjustment plates are slidably connected to the support box, the symmetry center line coincides with the axis of the support column, two groups of limit plates are fixedly installed on the support box, the bottom of the limit plate contacts the upper surface of the adjustment plate, and is used to guide and limit the adjustment plate;

[0017] The double-threaded rod is rotatably connected to a set of limit plates, and the two sets of adjustment plates are threadably matched with the double-threaded rod, and the double-threaded rod drives the two sets of adjustment plates to move toward or away from each other.

[0018] Preferably, the adjustment plate is provided with a first arc-shaped groove, a first buckle plate is fixedly mounted on the adjustment plate, a second arc-shaped groove is provided on the first buckle plate, and the arc surfaces of the first arc-shaped groove and the second arc-shaped groove are coplanar;

[0019] The maximum outer diameter of the spring disk composed of several springs is smaller than the diameter of the limiting surface and smaller than the outer diameter of the ring plate of the spring disk.

[0020] Preferably, a positioning groove is provided at the bottom of the support block, the support column is plugged into the positioning groove, an annular groove is provided on the circumference of the support block, the height of the adjustment plate is equal to the height of the annular groove, and the adjustment plate is inserted into the annular groove to limit the support block.

[0021] Preferably, the diameter of the guide hole is smaller than the diameter of the through hole on the spring disk, and any two groups of guide holes are provided with plug-in grooves, in which positioning rings are inserted, the outer diameter of the positioning ring is equal to the inner diameter of the through hole of the spring disk, and the inner diameter of the positioning ring is not smaller than the inner diameter of the guide hole.

[0022] Preferably, the test assembly includes a dynamometer and a first laser sensor, the dynamometer is fixedly mounted at the output end of the elevator, and the first laser sensor is fixedly mounted on the elevator to detect the lifting height during the test process;

[0023] A fixed block is fixedly installed at the bottom of the force measuring arm of the dynamometer, the axes of the fixed block and the supporting column are colinear, a plurality of adjusting blocks are slidably connected to the fixed block, a plurality of first threaded rods corresponding to the adjusting blocks are rotatably connected to the fixed block, the first threaded rods are threadedly matched with the adjusting block, and a second buckle plate is fixedly installed on the adjusting block.

[0024] Preferably, it also includes a lifting assembly, the lifting assembly includes a fixed plate and a lifting plate, the fixed plate is fixedly mounted on the lifting frame, the fixed plate is inserted into the supporting box platform, the lifting plate is slidably connected to the supporting box platform, the fixed plate is slidably connected to the lifting plate, the supporting plate abuts against the lifting plate, and the lifting plate is above the limit block;

[0025] The third armature is fixedly installed on the fixed plate, and a limiting hole is provided on the lifting plate. The fixed plate and the third armature both pass through the limiting hole. The lifting plate is slidably connected to a limiting rod, and a sliding plate is fixedly installed on the end of the limiting rod. The sliding plate is in the limiting hole, and a third elastic member is mounted on the limiting rod. One end of the third elastic member is fixedly connected to the sliding plate, and the other end is fixedly connected to the lifting plate. A third electromagnet is fixedly installed on one side of the sliding plate close to the third armature, and one end of the lifting plate contacts with the inner wall of the supporting box platform and is fixedly installed with a fourth electromagnet, and a fourth armature is fixedly installed at a position corresponding to the fourth electromagnet on the supporting box platform.

[0026] Preferably, a second laser sensor is fixedly mounted on the top of one of the limit columns to detect the lifting and lowering displacement of the limit column.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. The present invention controls the stretching or compression of the spring disk through the elastic force value detected by the test component within a unit time. When the change in the elastic force value exceeds the set threshold range, the spring falls off, and the second electromagnet is quickly energized. The second armature is adsorbed on the second electromagnet under the action of magnetic force and drives the push block to contact the buffer plate to push the top block. The first elastic member is compressed, and the top block slides out of the adjustment hole, thereby increasing the maximum diameter surface formed by the plurality of top blocks, thereby limiting the oscillating displacement of the fallen spring in the horizontal direction and accelerating the spring to recover to a stable state. At the same time, the limit column is also effectively protected, reducing the risk of limit column bending caused by collision, and can better buffer single-end detachment or double-end detachment of springs.

[0029] 2. The present invention can effectively improve the ejection speed of the ejector block by quickly pushing the buffer plate through the push block to drive the ejector block to move, ensuring that the ejector block is ejected at the moment the spring of the spring disk is detached, and effectively reducing the problem of slow free ejection speed of the ejector block caused by the buffering performance of the elastic member.

[0030] 3. The second electromagnet of the present invention is activated after the spring is detached, so the electromagnetic force generated by the second electromagnet will not affect the elastic force data of the test process, thereby improving the reliability and accuracy of the test data.

[0031] 4. When the spring disk of the present invention is subjected to a tensile force test, the spring is stretched, thereby increasing the spacing between the upper and lower ring plates. The present invention energizes the third electromagnet and fixes it with the third armature, thereby realizing that when the elevator controls the test assembly to rise or fall, the lifting plate can be driven to rise or fall. The lifting plate can push the support plate, the first electromagnet and a number of limit assemblies to rise synchronously, and the spacing between the end of the limit column and the ring plate at the top of the spring disk can be kept unchanged, thereby increasing the limiting capacity when the spring is detached, reducing the spring from detaching from the spacing between the limit column and the ring plate, and further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the spring disk structure in the prior art;

[0033] Figure 2 It is a schematic diagram of the overall structure of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0034] Figure 3 A partial cross-sectional view of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0035] Figure 4 A schematic diagram of a first gusset plate connection structure of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0036] Figure 5A schematic diagram of a support block connection structure of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the connection structure of a limit assembly of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the structure of a testing component of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0039] Figure 8 A cross-sectional view of a limit assembly of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of the structure of a portion of a limit assembly of a spring disk elastic force testing device disclosed in a preferred embodiment of the present invention;

[0041] Fig.10 A spring disk elastic force testing device disclosed in a preferred embodiment of the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0042] Explanation of the numbers in the figure: 1. Support assembly; 2. Support block; 3. Lifter; 4. Test assembly; 5. Limit assembly; 6. Second laser sensor; 7. Lifting assembly; 11. Support box; 12. Support column; 13. Limit block; 14. Support plate; 15. First electromagnet; 16. Test hole; 17. Adjustment plate; 18. Limit plate; 19. Double threaded rod; 21. Positioning groove; 22. Ring groove; 23. Guide hole; 24. Plug-in groove; 25. Positioning ring; 26. Limiting surface; 31. Support frame; 32. Telescopic cylinder; 33. Lifting frame; 41. Dynamometer; 42. First laser sensor; 43. Fixing block; 44. Adjustment block; 45. The first threaded rod; 46, the second buckle plate; 51, the limiting column; 52, the first armature; 53, the second electromagnet; 54, the connecting block; 55, the guide rod; 56, the second armature; 57, the push block; 58, the adjustment hole; 59, the top block; 71, the fixing plate; 72, the lifting plate; 73, the third armature; 74, the limiting hole; 75, the limiting rod; 76, the sliding plate; 77, the third elastic member; 78, the third electromagnet; 79, the fourth electromagnet; 110, the first arc groove; 111, the first buckle plate; 112, the second arc groove; 510, the telescopic rod; 511, the first elastic member; 512, the inclined surface; 513, the buffer plate; 514, the second elastic member. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0044] Reference Figure 1 The spring disk is composed of a number of parallel springs and two sets of ring plates. The two ends of the springs are connected and fixed to the tube body or connecting ball column on the ring plate by riveting or the like, so as to achieve the elastic performance required for the connection.

[0045] Reference Figures 2 to 6 The present embodiment discloses a spring disk elastic force testing device, including a supporting assembly 1 and a supporting block 2. The supporting assembly 1 includes a supporting box 11, a supporting column 12 is fixedly installed in the supporting box 11, a limiting block 13 is fixedly installed on the supporting column 12, a supporting plate 14 is slidably connected to the supporting column 12, the supporting plate 14 is directly above the limiting block 13, a first electromagnet 15 is fixedly installed on the supporting plate 14, a testing hole 16 is opened on the supporting box 11, and the axes of the testing hole 16, the supporting column 12 and the first electromagnet 15 are collinearly arranged, two groups of symmetrically distributed adjusting plates 17 are slidably connected to the supporting box 11, and the symmetric midline coincides with the axis of the supporting column 12, two groups of limiting plates 18 are fixedly installed on the supporting box 11, and the limiting The positioning plates 18 are distributed at both ends of the adjustment plate 17 and are arranged vertically with the adjustment plate 17. The bottom of the limiting plate 18 contacts the upper surface of the adjustment plate 17, which is used to guide and limit the adjustment plate 17. The support assembly 1 also includes a double-threaded rod 19, which is rotatably connected to a group of limiting plates 18. The two groups of adjustment plates 17 are threadedly matched with the double-threaded rod 19. By rotating the double-threaded rod 19, the two groups of adjustment plates 17 can be driven to move toward or away from each other, thereby controlling the limiting spacing of the adjustment plates 17. A first arc groove 110 is provided on the adjustment plate 17, and a first buckle plate 111 is fixedly installed on the adjustment plate 17. A second arc groove 112 is provided on the first buckle plate 111, and the arc surfaces of the first arc groove 110 and the second arc groove 112 are coplanar.

[0046] A positioning groove 21 is provided at the bottom of the support block 2, and the support column 12 is plugged into the positioning groove 21. An annular groove 22 is provided on the circumferential side of the support block 2. The height of the adjustment plate 17 is equal to the height of the annular groove 22. The adjustment plate 17 is inserted into the annular groove 22 to limit the support block 2. A plurality of guide holes 23 are provided on the support block 2. The guide holes 23 correspond to the through holes on the ring plate of the spring disk one by one, and the diameter of the guide holes 23 is smaller than the diameter of the through holes on the spring disk. An insertion groove 24 is provided on any two groups of guide holes 23, and a positioning ring 25 is inserted in the insertion groove 24. The outer diameter of the positioning ring 25 is equal to the inner diameter of the through hole of the spring disk, and the inner diameter of the positioning ring 25 is not less than the inner diameter of the guide hole 23. When the spring disk is placed on the support block 2, two positioning rings 25 are inserted into the through hole of the spring disk, so that the center line of the spring disk is colinear with the axis of the support column 12, and preliminary alignment is achieved. After alignment, the two sets of adjustment plates 17 are moved and inserted into the annular groove 22, and the arc surface of the first arc groove 110 abuts against the limiting surface 26. It should be noted that the maximum outer diameter of the spring disk composed of several springs is smaller than the diameter of the limiting surface 26, which is smaller than the outer diameter of the ring plate of the spring disk. Therefore, when the arc surface of the first arc groove 110 abuts against the limiting surface 26, the first buckle plate 111 is buckled on the bottom ring plate of the spring disk, thereby realizing the synchronous fixation of the support block 2 and the ring plate, effectively reducing the difficulty of the fixing operation. The setting of the first arc groove 110 and the second arc groove 112 can effectively increase the contact area of ​​the ring plate with the support block 2 and the spring disk, thereby improving the stability of the limit.

[0047] A lift 3 is installed on the support box platform 11. The lift 3 includes a support frame 31. The support frame 31 is fixedly installed on the support box platform 11. A telescopic cylinder 32 is fixedly installed on the support frame 31. The output shaft of the telescopic cylinder 32 is fixedly connected to a lift frame 33. The lift frame 33 is slidably connected to the support frame 31 through a guide rail.

[0048] Reference Figure 2 , Figure 3 and Figure 7 The test assembly 4 is installed on the lifting frame 33. The test assembly 4 includes a dynamometer 41 and a first laser sensor 42. The dynamometer 41 is fixedly installed on the lifting frame 33. The first laser sensor 42 is fixedly installed on the top of the lifting frame 33 to detect the lifting height of the test process. A fixed block 43 is fixedly installed at the bottom of the force measuring arm of the dynamometer 41. The axis of the fixed block 43 and the support column 12 are colinear. A plurality of adjustment blocks 44 are slidably connected to the fixed block 43. A plurality of first threaded rods 45 corresponding to the adjustment blocks 44 are rotatably connected to the fixed block 43. The first threaded rods 45 are threadedly matched with the adjustment blocks 44. A second buckle plate 46 is fixedly installed on the adjustment block 44. After the fixed block 43 is lowered to contact the ring plate at the top of the spring disk, the first threaded rod 45 is rotated to control the adjustment block 44 and the second buckle plate 46 to slide on the fixed block 43, so that the second buckle plate 46 limits and fixes the ring plate of the spring disk.

[0049] Reference Figure 3 , Figure 5 , Figure 8 and Fig. 9 The test equipment also includes a plurality of limit assemblies 5, the limit assemblies 5 include a limit column 51, the limit column 51 is plugged into the guide hole 23, a first armature 52 is fixedly installed at the bottom of the limit column 51, after the first electromagnet 15 is energized, the first armature 52 is adsorbed and fixed on the first electromagnet 15, thereby fixing the limit column 51, the limit column 51 is hollow inside, two groups of second electromagnets 53 and two groups of connecting blocks 54 are fixedly installed in the limit column 51, and the connecting blocks 54 are slidably connected with guide holes 23. The guide rod 55 has a second armature 56 fixedly mounted on one end of the guide rod 55, and a push block 57 fixedly connected to the other end of the guide rod 55. The second armature 56 is located at one end of the guide rod 55 close to the second electromagnet 53. The limit column 51 is provided with a plurality of adjustment holes 58. The limit assembly 5 also includes a plurality of top blocks 59 corresponding to the adjustment holes 58. The top blocks 59 are slidably connected to the limit column 51 through the telescopic rod 510. The sliding direction of the top blocks 59 is the diameter direction of the limit column 51. The telescopic rod 510 The upper sleeve is provided with a first elastic member 511, one end of the first elastic member 511 is fixedly connected to the top block 59, and the other end is fixedly connected to the limiting column 51. The first elastic member 511 is used to push the top block 59 to move inside the limiting column 51 to keep the top block 59 stored in the limiting column 51. The two ends of the top block 59 are inclined surfaces 512. The distance between the top holding surface of the top block 59 and the axis of the limiting column 51 decreases from the middle to the two ends, so as to avoid the oscillating spring and the top of the top block 59 from colliding with each other. The low-stretch spring has a rebound difficulty. A groove is provided in the top block 59, and the push block 57 is in the groove. Two groups of symmetrically distributed buffer plates 513 are slidably connected in the groove. The buffer plates 513 are tilted. Along the diameter direction of the limiting column 51, the spacing between the two groups of buffer plates 513 gradually increases. One end of the second elastic member 514 is fixedly connected to the buffer plate 513, and the other end is fixedly connected to the top block 59. The elastic force of the second elastic member 514 in the same group is greater than the elastic force of the first elastic member 511 in the same group.

[0050] During the tensile force test of the spring disk, when the spring falls off, the second electromagnet 53 is quickly energized, and the second armature 56 is adsorbed on the second electromagnet 53 under the action of magnetic force and drives the push block 57 to contact the buffer plate 513 to push the top block 59. The first elastic member 511 is compressed, and the top block 59 slides out of the adjustment hole 58, thereby increasing the maximum diameter surface formed by the plurality of top blocks 59, thereby limiting the oscillating displacement of the fallen spring in the horizontal direction, accelerating the spring to restore the stable state, and at the same time effectively protecting the limit column 51, reducing the risk of bending of the limit column 51 due to collision. The present invention drives the top block 59 to move by quickly pushing the buffer plate 513 by the push block 57, which can effectively improve the ejection speed of the top block 59, ensure that the spring is ejected at the moment of spring disk detachment, and effectively reduce the problem of slow free ejection speed of the top block 59 caused by the buffering performance of the elastic member. The second electromagnet 53 works after the spring is detached. Therefore, the electromagnetic force generated by the second electromagnet 53 will not affect the elastic force data of the test process, thereby improving the reliability and accuracy of the test data.

[0051] A second laser sensor 6 is fixedly mounted on the top of a limiting column 51 for detecting the distance between the limiting column 51 and the components above it. A lifting assembly 7 is installed on the elevator 3 .

[0052] Reference Figure 6 and Fig.10The lifting assembly 7 includes a fixed plate 71 and a lifting plate 72. The fixed plate 71 is fixedly mounted on the lifting frame 33. The fixed plate 71 is inserted into the supporting box platform 11. The lifting plate 72 is slidably connected to the supporting box platform 11. The fixed plate 71 is slidably connected to the lifting plate 72. The supporting plate 14 abuts against the lifting plate 72. The lifting plate 72 is above the limit block 13. A third armature 73 is fixedly mounted on the fixed plate 71. A limit hole 74 is provided on the lifting plate 72. The fixed plate 71 and the third armature 73 both pass through the limit hole 74. A limit rod 75 is slidably connected to the lifting plate 72. A sliding rod 75 is fixedly mounted on the end of the limit rod 75. The movable plate 76 and the sliding plate 76 are located in the limiting hole 74. The limiting rod 75 is provided with a third elastic member 77. One end of the third elastic member 77 is fixedly connected to the sliding plate 76, and the other end is fixedly connected to the lifting plate 72. A third electromagnet 78 is fixedly installed on the side of the sliding plate 76 close to the third armature 73. One end of the lifting plate 72 is in contact with the inner wall of the supporting box platform 11 and is fixedly installed with a fourth electromagnet 79. A fourth armature is fixedly installed on the supporting box platform 11 at a position corresponding to the fourth electromagnet 79. The fourth armature has a certain height to ensure that the lifting plate 72 can contact the fourth armature when moving within a certain range. When the spring disk is subjected to a tensile force test, the spring is stretched, thereby increasing the spacing between the upper and lower ring plates. The present invention energizes the third electromagnet 78 and fixes it with the third armature 73, thereby realizing that when the elevator 3 controls the test component 4 to rise or fall, the lifting plate 72 can be driven to rise or fall, and the lifting plate 72 can push the support plate 14, the first electromagnet 15 and a number of limit components 5 to rise synchronously. Therefore, during the tensile force test, the spacing between the end of the limit column 51 and the ring plate at the top of the spring disk remains unchanged, thereby increasing the limiting capacity when the spring is detached, reducing the spring detachment from the spacing between the limit column 51 and the ring plate, further improving safety, and connecting the lifting component 7 to the elevator 3, thereby reducing the number of driving devices and reducing the cost of the test equipment. At the same time, during the test process, the high-precision synchronous movement of the limit column 51 and the spring disk can be maintained.

[0053] It should be noted that the lifting assembly 7 of the present invention can also be a lifting device such as an electric cylinder, a hydraulic cylinder or a lifting platform. By adding a set of lifting devices and connecting their output ends to the support plate 14, the movement of several limit assemblies 5 can be adjusted.

[0054] Through the setting of the third armature 73, the third electromagnet 78 and the fourth electromagnet 79, it can also be used to adjust the initial height of the limit column 51 inserted into the spring disk, that is, before the limit column 51 moves synchronously with the spring disk stretching, adjust the distance between the end of the limit column 51 and the component directly above the limit column 51, and the adjustment of the distance is measured by the second laser sensor 6. When there is no through hole on the ring plate on the upper side of the spring disk, the second laser sensor 6 detects the distance between the limit column 51 and the ring plate without a through hole. When there is a through hole on the ring plate on the upper side of the spring disk, the second laser sensor 6 detects the distance between the limit column 51 and the fixed block 43. When the spring on the spring disk is riveted on a solid component, such as a connecting ball column, the second laser sensor 6 detects the distance between the limit column 51 and the connecting ball column. Therefore, when adjusting the initial position of the limit column 51, the second laser sensor 6 detects the distance between the components that may interfere with the upward movement of the limit column 51 at this time.

[0055] The present invention can adapt to the compression force or tension force test of spring disks of different sizes. When the through hole diameter or through hole position of the spring disk changes, a set of support blocks 2 and two positioning rings 25 need to be reprocessed. The difference between different support blocks 2 is only that the hole position or number of the guide hole 23 changes. Corresponding to the new spring disk through hole, the outer diameter of the positioning ring 25 is equal to the inner diameter of the new spring disk through hole, and the diameter of the guide hole 23 remains unchanged. Therefore, several limit assemblies 5 of the present invention can be recycled, thereby reducing the testing cost. The diameter of the limit column 51 needs to be smaller than the smallest through hole of the spring disk. Therefore, when the smaller limit column 51 acts on the larger spring disk to limit, the limit column 51 collides with the detached spring and is prone to bending, thereby affecting the next use of the limit column 51. The present invention can effectively provide buffer protection for the limit column 51 through the provision of several elastically arranged top blocks 59, thereby solving the above-mentioned problem.

[0056] Working principle: Place the support block 2 corresponding to the spring disk on the support column 12, pass a plurality of limit columns 51 through the guide holes 23 of the support block 2, make the first armature 52 abut against the first electromagnet 15, when the third electromagnet 78 is not energized, under the gravity of the support plate 14, the first electromagnet 15 and the lifting plate 72, the lifting plate 72 abuts against the limit block 13, at which time the end of the limit column 51 is higher than the support block 2, the first electromagnet 15 is energized to preliminarily fix the limit column 51, the through hole of the spring disk is inserted into a plurality of limit columns 51 and plugged into the positioning ring 25, completing the preliminary centering and positioning of the spring disk on the support block 2;

[0057] After centering, the double-threaded rod 19 is rotated to move the two sets of adjustment plates 17 toward each other and insert them into the annular groove 22, the arc surface of the first arc-shaped groove 110 abuts against the limiting surface 26, and the first buckle plate 111 is buckled on the bottom ring plate of the spring disk, completing the synchronous fixation of the support block 2 and the bottom ring plate of the spring disk;

[0058] The third electromagnet 78 is energized, and the third electromagnet 78 is adsorbed and fixed on the third armature 73, thereby fixing the fixed plate 71 and the lifting plate 72, and the elevator 3 drives the fixed plate 71 to rise, thereby driving the support plate 14, the first electromagnet 15 and the plurality of limit assemblies 5 to rise, and the second laser sensor 6 detects the distance between the interference components in the direction of its movement. When the distance reaches the set threshold, the elevator 3 stops, and the fourth electromagnet 79 is energized and fixed to the fourth armature, thereby fixing the lifting plate 72 and the support box platform 11, thereby keeping the limit assembly 5 stable, and the third electromagnet 78 is de-energized, and the fixing of the fixed plate 71 and the lifting plate 72 is released;

[0059] The dynamometer 41 is zeroed, the elevator 3 drives the test assembly 4 to descend, the fixed plate 71 descends and slides relative to the lifting plate 72, the fixed block 43 is slightly pressed against the ring plate on the top of the spring disk, the first threaded rod 45 is rotated to control the adjustment block 44 and the second buckle plate 46 to slide on the fixed block 43, so that the second buckle plate 46 can limit and fix the ring plate of the spring disk. When the ring plate is pressed, the difficulty of limiting the ring plate by the second buckle plate 46 can be reduced. After the second buckle plate 46 and the top of the spring disk are fixed in shift, the elevator 3 rises to restore the pressure value of the dynamometer 41 to zero. At this time, the third electromagnet 78 is energized, and the fourth electromagnet 79 is de-energized.

[0060] The lift 3 drives the dynamometer 41 and several limit assemblies 5 to rise or fall synchronously, and tests the compressive elastic force and tensile elastic force of the spring disk. The fixed block 43 pulls the goods up and presses down the ring plate on the top of the spring disk, and the spring of the spring disk is stretched or compressed. The lift 3 detects the total elastic force value through the dynamometer 41, and keeps the elastic force change per unit time the same, and detects the spring compression through the first laser sensor 42;

[0061] During the lifting process, when the change in the total elastic force value exceeds the set threshold range, it means that at least one group of springs are detached from the ring plate. At this time, the second electromagnet 53 is quickly energized, and the second armature 56 is adsorbed on the second electromagnet 53 under the action of magnetic force and drives the push block 57 to contact the buffer plate 513 to push the top block 59. The first elastic member 511 is compressed, and the top block 59 slides out of the adjustment hole 58, thereby increasing the maximum diameter surface formed by the plurality of top blocks 59, thereby limiting and buffering the oscillating displacement of the detached spring in the horizontal direction, accelerating the spring to return to a stable state, and at the same time effectively protecting the limit column 51 to reduce the risk of bending of the limit column 51 due to collision. The first laser sensor 42 and the dynamometer 41 record the measurement value at the last moment.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spring disk elastic force testing device, characterized in that: It comprises a support assembly (1), a support block (2) and a limit assembly (5); The support block (2) is provided with a plurality of guide holes (23), the axes of the guide holes (23) corresponding one to one with the axes of the through holes on the ring plate of the spring disk, and the spring disk and the support block (2) are both mounted on the support assembly (1); The support assembly (1) is equipped with a lift (3), a test assembly (4) is installed on the lift (3), and the top of the spring disk is installed on the test assembly (4); The test assembly (4) comprises a dynamometer (41) and a first laser sensor (42), the dynamometer (41) being fixedly mounted on the output end of the elevator (3), and the first laser sensor (42) being fixedly mounted on the elevator (3) and used for detecting the lifting height during the test process; A fixed block (43) is fixedly mounted at the bottom of the force measuring arm of the force measuring instrument (41); a plurality of adjusting blocks (44) are slidably connected to the fixed block (43); a plurality of first threaded rods (45) corresponding to the adjusting blocks (44) are rotatably connected to the fixed block (43); the first threaded rods (45) are threadably matched with the adjusting blocks (44); and a second buckle plate (46) is fixedly mounted on the adjusting block (44); The limiting assembly (5) comprises a limiting column (51) and a plurality of top blocks (59); the limiting column (51) is plug-fitted into the guide hole (23); the limiting column (51) passes through the guide hole (23) and is inserted into the spring inner ring of the corresponding spring disk; The limiting column (51) is hollow inside, and two groups of second electromagnets (53) and two groups of connecting blocks (54) are fixedly installed inside the limiting column (51). A guide rod (55) is slidably connected to the connecting block (54). A second armature (56) is fixedly installed on one end of the guide rod (55), and a push block (57) is fixedly connected to the other end of the guide rod (55). The second armature (56) is located at one end of the guide rod (55) close to the second electromagnet (53). A plurality of adjustment holes (58) are opened on the limiting column (51); The top block (59) is slidably connected to the limiting column (51); one end of the first elastic member (511) is fixedly connected to the top block (59) and the other end is fixedly connected to the limiting column (51); Two groups of symmetrically distributed buffer plates (513) are slidably connected inside the top block (59), the buffer plates (513) are tilted, one end of the second elastic member (514) is fixedly connected to the buffer plate (513), and the other end is fixedly connected to the top block (59); By energizing the second electromagnet (53), the second armature (56) moves and is attracted to the second electromagnet (53), so that the push block (57) pushes the buffer plate (513) to drive the push block (59) to push out the limit column (51).

2. A spring disk elastic force testing device according to claim 1, characterized in that: Both ends of the top block (59) are inclined surfaces (512), and the distance between the top holding surface of the top block (59) and the axis of the limiting column (51) decreases from the middle to the two ends.

3. A spring disk elastic force testing device according to claim 1, characterized in that: Along the diameter direction of the limiting column (51), the distance between the two buffer plates (513) in the same group gradually increases, and the elastic force of the second elastic member (514) in the same group is greater than the elastic force of the first elastic member (511).

4. A spring disk elastic force testing device according to claim 1, characterized in that: The support assembly (1) comprises a support box platform (11) and a double threaded rod (19); a support column (12) is fixedly installed in the support box platform (11); a limit block (13) is fixedly installed on the support column (12); a support plate (14) is slidably connected to the support column (12); and the support plate (14) is located directly above the limit block (13); A first electromagnet (15) is fixedly mounted on the support plate (14), a first armature (52) is fixedly mounted on the bottom of the limit column (51), a test hole (16) is opened on the support box (11), the axes of the test hole (16), the support column (12) and the first electromagnet (15) are arranged in a colinear manner, two groups of symmetrically distributed adjustment plates (17) are slidably connected to the support box (11), the symmetry center line coincides with the axis of the support column (12), and two groups of limit plates (18) are fixedly mounted on the support box (11), the bottom of the limit plate (18) contacts the upper surface of the adjustment plate (17), and is used to guide and limit the adjustment plate (17); The double-threaded rod (19) is rotatably connected to a set of limit plates (18), and the two sets of adjustment plates (17) are threadably matched with the double-threaded rod (19). The double-threaded rod (19) drives the two sets of adjustment plates (17) to move toward or away from each other.

5. A spring disk elastic force testing device according to claim 4, characterized in that: The adjustment plate (17) is provided with a first arc-shaped groove (110), a first buckle plate (111) is fixedly mounted on the adjustment plate (17), a second arc-shaped groove (112) is provided on the first buckle plate (111), and the arc surfaces of the first arc-shaped groove (110) and the second arc-shaped groove (112) are coplanar; The maximum outer diameter of the spring disk composed of a plurality of springs is smaller than the diameter of the limiting surface (26) and smaller than the outer diameter of the ring plate of the spring disk.

6. A spring disk elastic force testing device according to claim 4, characterized in that: The bottom of the support block (2) is provided with a positioning groove (21), the support column (12) is plugged into the positioning groove (21), a ring groove (22) is provided on the peripheral side of the support block (2), the height of the adjustment plate (17) is equal to the height of the ring groove (22), and the adjustment plate (17) is inserted into the ring groove (22) to limit the support block (2).

7. A spring disk elastic force testing device according to any one of claims 1 to 6, characterized in that: The diameter of the guide hole (23) is smaller than the diameter of the through hole on the spring disk. Any two groups of guide holes (23) are provided with an inserting groove (24). A positioning ring (25) is inserted into the inserting groove (24). The outer diameter of the positioning ring (25) is equal to the inner diameter of the through hole of the spring disk, and the inner diameter of the positioning ring (25) is not smaller than the inner diameter of the guide hole (23).

8. A spring disk elastic force testing device according to any one of claims 4 to 6, characterized in that: The axes of the fixing block (43) and the supporting column (12) are collinear.

9. A spring disk elastic force testing device according to any one of claims 4 to 6, characterized in that: It also includes a lifting assembly (7), the lifting assembly (7) including a fixed plate (71) and a lifting plate (72), the fixed plate (71) is fixedly mounted on the output end of the lift (3), the fixed plate (71) is inserted into the support box platform (11), the lifting plate (72) is slidably connected to the support box platform (11), the fixed plate (71) is slidably connected to the lifting plate (72), the support plate (14) abuts against the lifting plate (72), and the lifting plate (72) is located above the limit block (13); The fixing plate (71) is fixedly mounted with a third armature (73), the lifting plate (72) is provided with a limiting hole (74), the fixing plate (71) and the third armature (73) both pass through the limiting hole (74), the lifting plate (72) is slidably connected with a limiting rod (75), the end of the limiting rod (75) is fixedly mounted with a sliding plate (76), the sliding plate (76) is located in the limiting hole (74), the limiting rod (75) is sleeved with a third elastic member (77), one end of the third elastic member (77) is fixedly connected to the sliding plate (76), and the other end is fixedly connected to the lifting plate (72), a third electromagnet (78) is fixedly mounted on one side of the sliding plate (76) close to the third armature (73), one end of the lifting plate (72) contacts the inner wall of the supporting box platform (11) and is fixedly mounted with a fourth electromagnet (79), and a fourth armature is fixedly mounted on the supporting box platform (11) at a position corresponding to the fourth electromagnet (79).

10. A spring disk elastic force testing device according to claim 9, characterized in that: A second laser sensor (6) is fixedly mounted on the top of one of the limit posts (51) and is used to detect the lifting and lowering displacement of the limit post (51).

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