Automobile compression spring elasticity fatigue resistance testing device
By combining height adjustment and locking mechanisms, the problem of unstable spring fixation in existing technologies is solved, achieving stable fixation of various springs and accurate fatigue testing.
Patent Information
- Application Number
- CN202422840534.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing technologies make it difficult to effectively fix various types of springs, leading to problems such as displacement and tilting during fatigue testing.
Employing a height adjustment mechanism and a locking mechanism, and through the combination of a first gear, a second gear, a limit block, and a slot, different springs can be precisely fixed; combined with a servo motor-driven rotary disk and connecting parts, fatigue testing of the reciprocating motion of the springs can be achieved.
This method achieves stable fixation of different springs, avoiding offset and tilting during the testing process and ensuring the accuracy and reliability of fatigue testing.
Smart Images
Figure CN223841437U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive spring manufacturing technology, and in particular to an elastic fatigue resistance testing device for automotive compression springs. Background Technology
[0002] After some springs are processed, fatigue tests are often required to remove any unqualified springs from the tie rod.
[0003] Existing technologies cannot effectively fix various types of springs. Most fixation is achieved through upper pressure and a simple support, which can cause problems such as spring displacement and tilting during fatigue testing. Utility Model Content
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A fatigue resistance testing device for automotive compression springs includes a workbench with a support frame fixedly mounted on its upper surface. Two sliding seats are slidably mounted at the middle position of the support frame. A height adjustment mechanism for adjusting the height of the upper sliding seat is mounted on the support frame. A reciprocating movement mechanism is mounted on the lower side of the lower sliding seat. A locking mechanism is provided on the side of the two sliding seats that are close to each other.
[0006] Preferably, the height adjustment mechanism includes a threaded post rotatably mounted on the upper end of the upper sliding seat, the upper end of the threaded post rotatably passing through the support frame, and a rotating handle is threadedly connected to the outer side of the threaded post at the top of the support frame, the lower end of the rotating handle being rotatably connected to the support frame.
[0007] Preferably, a fixing nut is threaded onto a section of the threaded post located between the support frame and the upper sliding seat.
[0008] Preferably, the locking mechanism includes a first gear rotatably mounted inside the sliding seat, a first connecting column fixedly connected at the center of the first gear, the first connecting column rotatably connected to the inner walls of the upper and lower sides of the sliding seat, a plurality of sliding grooves arranged in a circumferential array on the inner side of the first gear, a sliding column slidably mounted in each sliding groove, a limit block fixedly connected at the end of the sliding column away from the sliding groove after penetrating the sliding seat, the plurality of limit blocks cooperating to form a frustum-shaped structure, a slot fixedly mounted on the lower side wall of the limit block, the plurality of slots cooperating to form a ring structure, a rubber pad glued to the inner side of the slot, and a drive assembly provided on one side of the sliding seat.
[0009] Preferably, the drive assembly includes a protrusion fixedly mounted on a sliding seat, a second connecting post fixedly mounted on the protrusion, a second gear rotatably connected to the outside of the second connecting post, and the second gear meshing with the first gear.
[0010] Preferably, the locking mechanism includes a rotating component fixedly installed on the lower surface of the sliding seat, a connecting component rotatably connected to the rotating component, and a rotating disk rotatably connected below the connecting component. The rotating disk is driven by a servo motor fixedly installed inside the worktable.
[0011] Compared with the prior art, the advantages of this utility model are:
[0012] 1. In this application, by setting up a first gear, a second gear, a limiting block, and a slot, the support diameter of the limiting block can be adjusted according to different springs, so that different springs can be well fixed. This solves the technical problem in the prior art that it is impossible to fix multiple springs well. Most of them are fixed by upper pressure and a simple support, which will cause the springs to shift and tilt during fatigue testing.
[0013] 2. In this application, by setting up a rotating disk, connecting parts and rotating parts, the servo motor installed inside the workbench can drive the rotating disk to rotate. While the rotating disk is rotating, the connecting parts and rotating parts can work together to drive the sliding seat below to move up and down reciprocally, thereby enabling continuous fatigue testing of the spring. Attached Figure Description
[0014] Figure 1 This is a side view of the fatigue resistance testing device for automotive compression springs proposed in this utility model.
[0015] Figure 2 This is a schematic diagram of the working table and rotating disk of an automotive compression spring elastic fatigue resistance testing device proposed in this utility model.
[0016] Figure 3 This is a schematic diagram of the cooperative structure of the sliding groove and sliding column of the automotive compression spring elastic fatigue resistance testing device proposed in this utility model.
[0017] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;
[0018] Figure 5 This is a schematic diagram of the interlocking structure of the first connecting column and the first gear in a fatigue resistance testing device for automotive compression springs proposed in this utility model.
[0019] In the diagram: 1. Workbench, 2. Rotary disk, 3. Connector, 4. Rotating component, 5. Support frame, 6. Sliding seat, 7. First connecting column, 8. First gear, 9. Second gear, 10. Second connecting column, 11. Sliding groove, 12. Sliding column, 13. Limiting block, 14. Slot, 15. Rubber pad, 16. Threaded column, 17. Fixing nut, 18. Rotating handle. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figures 1 to 5 A fatigue resistance testing device for automotive compression springs includes a workbench 1. A support frame 5 is fixedly mounted on the upper surface of the workbench 1. Two sliding seats 6 are slidably mounted in the middle of the support frame 5. A threaded post 16 is rotatably mounted on the upper end of the upper sliding seat 6. The upper end of the threaded post 16 rotatably passes through the support frame 5, and a rotating handle 18 is threadedly connected to the outer side of the threaded post 16 at the top of the support frame 5. The lower end of the rotating handle 18 is rotatably connected to the support frame 5, so that when the operator manually rotates the rotating handle 18, the threaded post 16 can be moved up and down in the vertical direction, thus facilitating fatigue resistance testing of springs of different lengths. A fixing nut 17 is threadedly connected to the upper part of the threaded post 16 between the support frame 5 and the upper sliding seat 6.
[0022] Both sliding seats 6 have a first gear 8 rotatably mounted inside. A first connecting post 7 is fixedly connected to the center of the first gear 8. The first connecting post 7 is rotatably connected to the inner walls of the upper and lower sides of the sliding seat 6. Multiple sliding grooves 11 are formed in a circular array on the inner side of the first gear 8. A sliding post 12 is slidably mounted in each sliding groove 11. The end of the sliding post 12 away from the sliding groove 11 passes through the sliding seat 6 and is fixedly connected to a limit block 13. The multiple limit blocks 13 cooperate with each other to form a frustum-shaped structure, thereby facilitating the limiting of the spring. A slot 14 is fixedly installed on the lower side wall of block 13. Multiple slots 14 cooperate with each other to form a circular structure. A rubber pad 15 is glued to the inner side of the slot 14. A protrusion is provided on one side of the sliding seat 6. A second connecting post 10 is fixedly installed on the protrusion. A second gear 9 is rotatably connected to the outer side of the second connecting post 10. The second gear 9 meshes with the first gear 8, so that when the operator manually rotates the second gear 9, it can drive the first gear 8 to rotate. When the first gear 8 rotates, it can drive multiple limit blocks 13 to move closer or separate.
[0023] A rotating component 4 is fixedly installed on the lower surface of the sliding seat 6 below. A connecting component 3 is rotatably connected to the rotating component 4, and a rotating disk 2 is rotatably connected below the connecting component 3. The rotating disk 2 is driven by a servo motor fixedly installed inside the worktable 1.
[0024] The specific working principle of this utility model is as follows: When it is necessary to conduct an elastic fatigue test on an automotive compression spring, the spring is first simply placed on the lower limiting block 13. Then, the second gear 9 is rotated, which drives the first gear 8 to rotate. The second gear 9 is mounted on the sliding seat 6 by the second connecting post 10, and the first gear 8 is mounted on the sliding seat 6 by the first connecting post 7. When the first gear 8 rotates, the sliding groove 11 also rotates. When the sliding groove 11 rotates, it limits the sliding post 12, thereby driving the sliding post 12 to rotate. When the sliding post 12 rotates, it drives the limiting block 13 to rotate, allowing the diameter of the limiting block 13 to change. By expanding the spring, this adjustment can be matched with the diameter of the spring to be tested, so that the diameter of the limit block 13 is the same as the diameter of the spring. After the diameter is fixed, the lower end of the spring is pressed into the slot 14, and then fixed by the rubber pad 15 to prevent it from falling off. In this way, the support diameter of the limit block 13 can be adjusted according to different springs, so that different springs can be fixed well. However, the existing technology cannot fix multiple springs well. Most of them are fixed by upper pressure and a simple support, which will cause problems such as spring displacement and tilting during fatigue testing.
[0025] After the spring is fixed on the lower sliding seat 6, the fixing nut 17 is loosened to allow the threaded column 16 to rotate. Then, the rotating handle 18 is turned to move the upper sliding seat 6 up and down so that it can press against the spring. Then, the same operation is performed to make the upper end of the spring snap into the slot 14. After the snap is completed, the sliding seat 6 is pressed down a small distance to put the spring under stress. Then, the fixing nut 17 is tightened to fix the threaded column 16. Then, the worktable 1 is turned on. The servo motor in the worktable 1 will drive the rotating disk 2 to rotate. The rotating disk 2 will drive the connecting part 3 to rotate back and forth. The connecting part 3 will drive the rotating part 4 to move, thereby causing the sliding seat 6 to perform up and down pressing motion to conduct fatigue testing. Both the upper and lower sets of the sliding seat 6 are mounted on the support frame 5.
[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A fatigue resistance testing device for automotive compression springs, comprising a worktable (1), characterized in that, A support frame (5) is fixedly installed on the upper surface of the workbench (1). Two sliding seats (6) are slidably installed in the middle of the support frame (5). A height adjustment mechanism for adjusting the height of the upper sliding seat (6) is installed on the support frame (5). A reciprocating movement mechanism is installed on the lower side of the lower sliding seat (6). A locking mechanism is provided on the side of the two sliding seats (6) that are close to each other. The locking mechanism includes a first gear (8) rotatably installed inside the sliding seat (6), a first connecting column (7) fixedly connected at the center of the first gear (8), the first connecting column (7) rotatably connected to the inner walls of the upper and lower sides of the sliding seat (6), a plurality of sliding grooves (11) are arranged in a circular array on the inner side of the first gear (8), a sliding column (12) is slidably installed in each sliding groove (11), a limit block (13) is fixedly connected to the end of the sliding column (12) away from the sliding groove (11) after passing through the sliding seat (6), the plurality of limit blocks (13) cooperate with each other to form a frustum structure, a slot (14) is fixedly installed on the lower side wall of the limit block (13), the plurality of slots (14) cooperate with each other to form a ring structure, a rubber pad (15) is glued to the inner side of the slot (14), and a drive assembly is provided on one side of the sliding seat (6); The drive assembly includes a protrusion fixedly mounted on a sliding seat (6), on which a second connecting post (10) is fixedly mounted. A second gear (9) is rotatably connected to the outside of the second connecting post (10), and the second gear (9) meshes with the first gear (8).
2. The automotive compression spring elastic fatigue resistance testing device according to claim 1, characterized in that, The height adjustment mechanism includes a threaded post (16) rotatably mounted on the upper end of the sliding seat (6) above. The upper end of the threaded post (16) rotatably passes through the support frame (5), and a rotating handle (18) is threadedly connected to the outer side of the threaded post (16) at the top of the support frame (5). The lower end of the rotating handle (18) is rotatably connected to the support frame (5).
3. The automotive compression spring elastic fatigue resistance testing device according to claim 2, characterized in that, The threaded post (16) is located between the support frame (5) and the upper sliding seat (6) and is threaded with a fixing nut (17).
4. The automotive compression spring elastic fatigue resistance testing device according to claim 1, characterized in that, The locking mechanism includes a rotating component (4) fixedly installed on the lower surface of the sliding seat (6), a connecting component (3) rotatably connected to the rotating component (4), and a rotating disk (2) rotatably connected below the connecting component (3). The rotating disk (2) is driven by a servo motor fixedly installed inside the worktable (1).