Strip fatigue test tool jig
By designing a fixture for strip fatigue testing, and utilizing a combination of a lower fixture plate, an upper fixture plate, and a column holder, multiple strips can be fixed and rotated, solving the problem of low efficiency in existing fixtures and improving the efficiency and accuracy of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南皓天
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-21
AI Technical Summary
Existing strip fatigue testing fixtures can only fix one strip at a time, resulting in low testing efficiency and making it impossible to fix multiple strips simultaneously for continuous switching fatigue testing.
A fixture for strip fatigue testing was designed. By using a lower fixture plate and an upper fixture plate in conjunction with a column and a strip holder, multiple strips can be fixed and rotated. The fixture is suitable for fixing and fatigue testing of strips of different lengths by using a lifting screw and a chassis.
It enables continuous switching fatigue testing of multiple strips, improving the efficiency and accuracy of fatigue testing. It is applicable to fixing strips of different lengths, enhancing the flexibility and precision of the test.
Smart Images
Figure CN224152242U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of strip testing technology, specifically relating to a strip fatigue testing fixture. Background Technology
[0002] Strip steel is a strip of steel with a width of 600mm, supplied in coils with a large aspect ratio. Strips wider than 600mm are called wide strips, and those narrower than 600mm are called narrow strips. Strip thickness can be as thin as 0.001mm. Strip steel is produced by hot rolling or cold rolling. Hot rolling produces thicker strips, while cold rolling offers advantages that hot rolling cannot achieve, allowing for the production of thinner strips with better surface quality, dimensional accuracy, and higher mechanical properties. Strip steel can be considered as steel with a width smaller than that of sheet metal, and its shape, production methods, and uses are basically the same as those of sheet metal.
[0003] Fatigue testing is required during strip production. Strip fatigue refers to the phenomenon where materials, under cyclic loading and unloading, gradually accumulate damage, eventually leading to a decline in material performance or even complete failure. Fatigue is one of the main forms of material failure, especially in engineering applications such as aerospace, automotive manufacturing, and machinery manufacturing, where fatigue problems are particularly prominent.
[0004] In the process of strip fatigue testing, tooling fixtures are required to fix the strip. However, existing tooling fixtures can only fix one strip at a time and cannot fix multiple strips at the same time. After testing one strip, it is necessary to disassemble the strip and replace it with a new strip, which is inefficient and has certain limitations in use. Therefore, we propose a tooling fixture for strip fatigue testing. Utility Model Content
[0005] The purpose of this utility model is to provide a strip fatigue testing fixture to solve the problems mentioned in the background art, which are that the existing fixtures can only fix one strip at a time and cannot fix multiple strips at the same time. After testing one strip, the strip needs to be disassembled and replaced with a new strip, resulting in low work efficiency and certain limitations in use.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a strip fatigue testing fixture, comprising a mounting housing, mounting blocks fixedly mounted at each of the four corners of the mounting housing, mounting bolts threaded onto the mounting blocks, a lifting screw rotatably mounted inside the mounting housing, a handwheel fixedly mounted at the bottom end of the lifting screw extending out of the mounting housing, a threaded plate threaded onto the outer surface of the lifting screw, a transverse connecting plate fixedly mounted on the side of the threaded plate, and the transverse connecting plate extending out of the mounting housing through a channel opened on the side of the mounting housing and fixedly mounted. The device is equipped with a longitudinal connecting plate. A chassis is fixedly installed at the top of the longitudinal connecting plate. A lower jig plate is rotatably installed on the upper surface of the chassis. A column is fixedly installed on the upper surface of the lower jig plate. A sliding sleeve is movably provided on the outer surface of the column. An upper jig plate is fixedly installed on the outer surface of the sliding sleeve. Several strip holders are fixedly installed on the upper surface of the lower jig plate and the lower surface of the upper jig plate. Two strip clamping plates are provided inside each strip clamping plate. One strip clamping plate is fixedly installed on the inner wall of the strip clamping plate, and the other strip clamping plate is movably disposed inside the strip clamping plate.
[0007] The above scheme uses a lower jig plate and an upper jig plate in conjunction with a column and strip holders. Multiple strip holders are provided between the opposite surfaces of the upper and lower jig plates, which can fix multiple strips at once and rotate to switch positions, thereby enabling continuous fatigue testing of multiple strips. The upper jig plate can be adjusted up and down to be suitable for fixing and clamping strips of different lengths. By setting up a mounting housing in conjunction with a lifting screw, the chassis can be raised and lowered by rotating the lifting screw, thereby enabling fatigue testing at different positions of the strip and improving the accuracy of fatigue testing operations.
[0008] In a preferred embodiment, a plurality of guide rods are fixedly installed on the inner wall of the mounting housing, and the threaded plate is slidably installed on the outer surface of the plurality of guide rods.
[0009] With the above scheme, when the threaded plate is driven to move during the rotation of the lifting screw, the threaded plate will slide stably on the surface of the guide rod. Therefore, the use of the guide rod can ensure that the threaded plate moves smoothly and is not prone to tilting or shaking.
[0010] In a preferred embodiment, a plurality of positioning blocks 1 are fixedly installed on the outer surface of the lower jig plate. Positioning blocks 1 are provided with positioning holes. The plurality of positioning blocks 1 and a plurality of strip holders on the lower jig plate are arranged opposite to each other. Positioning blocks 2 are fixedly installed on the surface of the lower jig plate. Positioning pins are inserted into positioning blocks 2. The positioning pins and positioning holes are used in conjunction.
[0011] Using the above scheme, positioning block one and positioning block two are used in conjunction with positioning pin. When the positioning pin is pulled out, the chassis is unlocked and can be rotated. After rotation, the positioning pin is inserted into positioning block one and positioning block two to lock the position of the chassis.
[0012] In a preferred embodiment, a plurality of limiting strips are fixedly installed on the outer surface of the column, and a plurality of limiting grooves are provided on the inner wall of the sliding sleeve, the limiting strips and limiting grooves being used in conjunction.
[0013] By using the above solution, the combination of limit strips and limit grooves can ensure the stability of the upper fixture plate's vertical movement and prevent misalignment or rotation of the upper fixture plate relative to the lower fixture plate.
[0014] In a preferred embodiment, an adjusting rod is slidably mounted on the sliding sleeve, a pull plate is fixedly mounted on one end of the adjusting rod, a spring is fixedly mounted between the pull plate and the sliding sleeve, and a plurality of adjusting holes are provided on the column, with the adjusting rod cooperating with the adjusting holes.
[0015] By using the above solution, the adjusting rod can be quickly inserted into the adjusting hole by utilizing the elastic force of the spring, thus improving the convenience of the locking operation.
[0016] In a preferred embodiment, a fixing screw is threaded onto the strip holder, one end of the fixing screw is fixedly mounted with a knob, and the other end of the fixing screw is rotatably connected to a movable strip holder.
[0017] By using the above solution and cooperating with the fixing screw, the position of the movable strip clamping plate can be moved, thereby achieving the clamping and fixing of the strip.
[0018] In a preferred embodiment, a plurality of sliding blocks are fixedly installed on the surface of the movable strip clamp, and a plurality of sliding grooves are provided on the inner wall of the strip clamp, with the sliding blocks slidably installed on the inner wall of the sliding grooves at corresponding positions.
[0019] By using the above solution, the sliding block can be used in conjunction with the sliding groove to support and guide the movement of the movable strip clamp, improve the stability of the movement, and prevent shaking.
[0020] In a preferred embodiment, anti-slip pads are affixed to the sides of the strip clamp, and the anti-slip pads on the two strip clamps inside the strip clamp seat are arranged opposite each other.
[0021] By adopting the above solution, the anti-slip pads can be used to prevent slippage when the strip is fixed and tightened.
[0022] Compared with the prior art, the beneficial effects of this utility model are:
[0023] This strip fatigue testing fixture uses a lower fixture plate and an upper fixture plate in conjunction with a column and strip holders. Multiple strip holders are provided between the opposite surfaces of the upper and lower fixture plates, which can fix multiple strips at once and rotate to switch positions, thereby realizing continuous switching fatigue testing of multiple strips. The upper fixture plate can be adjusted up and down, and is suitable for fixing and clamping strips of different lengths.
[0024] This strip fatigue testing fixture is designed with a mounting housing and a lifting screw. The rotation of the lifting screw allows the chassis to be raised or lowered, enabling fatigue testing at different locations on the strip and improving the accuracy of fatigue testing operations. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 This is a structural schematic diagram of the cross-section of the mounting housing of this utility model;
[0027] Figure 3 This is a structural schematic diagram of the chassis and lower jig plate of this utility model;
[0028] Figure 4 This is a schematic diagram of the structure of the sliding sleeve of this utility model;
[0029] Figure 5 This is a schematic diagram of the strip holder of this utility model.
[0030] In the diagram: 1. Mounting housing; 2. Mounting block; 3. Mounting bolt; 4. Lifting screw; 5. Threaded plate; 6. Horizontal connecting plate; 7. Longitudinal connecting plate; 8. Chassis; 9. Lower fixture plate; 10. Column; 11. Sliding sleeve; 12. Upper fixture plate; 13. Strip holder; 14. Strip clamping plate; 15. Guide rod; 16. Positioning block one; 17. Positioning block two; 18. Positioning pin; 19. Limiting strip; 20. Adjusting rod; 21. Pull plate; 22. Spring; 23. Fixing screw; 24. Sliding block; 25. Anti-slip pad. Detailed Implementation
[0031] Please see Figure 1-5This utility model provides a fixture for strip fatigue testing, including a mounting housing 1. Mounting blocks 2 are fixedly mounted at each of the four corners of the mounting housing 1. Mounting bolts 3 are threaded onto the mounting blocks 2. A lifting screw 4 is rotatably mounted inside the mounting housing 1. The bottom end of the lifting screw 4 extends out of the mounting housing 1 and is fixedly mounted with a handwheel. A threaded plate 5 is threaded onto the outer surface of the lifting screw 4. A transverse connecting plate 6 is fixedly mounted on the side of the threaded plate 5. The transverse connecting plate 6 extends out of the mounting housing 1 through a channel on its side and is fixedly mounted with a longitudinal connecting plate 7. A base plate 8 is fixedly installed at the top of plate 7. A lower jig plate 9 is rotatably installed on the upper surface of the base plate 8. A column 10 is fixedly installed on the upper surface of the lower jig plate 9. A sliding sleeve 11 is movably arranged on the outer surface of the column 10. An upper jig plate 12 is fixedly installed on the outer surface of the sliding sleeve 11. Several strip holders 13 are fixedly installed on the upper surface of the lower jig plate 9 and the lower surface of the upper jig plate 12. Two strip clamping plates 14 are arranged inside the strip clamping plate 13. One strip clamping plate 14 is fixedly installed on the inner wall of the strip clamping plate 13, and the other strip clamping plate 14 is movably arranged inside the strip clamping plate 13.
[0032] By setting up a lower fixture plate 9 and an upper fixture plate 12 in conjunction with a column 10 and a strip holder 13, multiple strip holders 13 are provided between the opposite surfaces of the upper fixture plate 12 and the lower fixture plate 9, which can fix multiple strips at one time and rotate to switch positions, thereby realizing continuous switching fatigue testing of multiple strips. The upper fixture plate 12 can be adjusted up and down, and is suitable for fixing and clamping strips of different lengths. By setting up a mounting housing 1 in conjunction with a lifting screw 4, the chassis 8 can be raised and lowered by rotating the lifting screw 4, thereby enabling fatigue testing of different positions of the strip and improving the accuracy of fatigue testing operations.
[0033] Several guide rods 15 are fixedly installed on the inner wall of the housing 1. The threaded plate 5 is slidably installed on the outer surface of the guide rods 15. When the lifting screw 4 rotates and drives the threaded plate 5 to move, the threaded plate 5 will slide stably on the surface of the guide rods 15. Therefore, the use of guide rods 15 can ensure that the threaded plate 5 moves smoothly and is not prone to tilting or shaking.
[0034] Several positioning blocks 16 are fixedly installed on the outer surface of the lower jig plate 9. Positioning blocks 16 are provided with positioning holes. The positioning blocks 16 and several strip holders 13 on the lower jig plate 9 are arranged opposite each other. Positioning blocks 27 are fixedly installed on the surface of the lower jig plate 9. Positioning pins 18 are inserted into positioning blocks 27. Positioning pins 18 and positioning holes are used together. Positioning blocks 16 and 27 are used in conjunction with positioning pins 18. When positioning pins 18 are pulled out, the chassis 8 is unlocked and can be rotated. After rotation, positioning pins 18 are inserted into positioning blocks 16 and 27 to lock the position of the chassis 8.
[0035] Several limiting strips 19 are fixedly installed on the outer surface of the column 10, and several limiting grooves are opened on the inner wall of the sliding sleeve 11. The limiting strips 19 and the limiting grooves are used in conjunction. By using the limiting strips 19 and the limiting grooves in conjunction, the up and down movement of the upper fixture plate 12 can be stabilized, and the misalignment and rotation of the upper fixture plate 12 relative to the lower fixture plate 9 can be prevented.
[0036] An adjusting rod 20 is slidably mounted on the sliding sleeve 11. A pull plate 21 is fixedly mounted on one end of the adjusting rod 20. A spring 22 is fixedly mounted between the pull plate 21 and the sliding sleeve 11. Several adjusting holes are provided on the column 10. The adjusting rod 20 is used in conjunction with the adjusting holes. By using the elastic force of the adjusting rod 20 and the spring 22, the adjusting rod 20 can be quickly inserted into the adjusting hole, improving the convenience of the locking operation.
[0037] A fixing screw 23 is threaded onto the strip holder 13. A knob is fixedly installed at one end of the fixing screw 23, and the other end of the fixing screw 23 is rotatably connected to the movable strip holder 14. By using the fixing screw 23 in conjunction, the position of the movable strip holder 14 can be moved, thereby achieving the clamping and fixing of the strip.
[0038] Several sliding blocks 24 are fixedly installed on the surface of the strip clamp 14. Several sliding grooves are opened on the inner wall of the strip clamp 13. The sliding blocks 24 are slidably installed on the inner wall of the sliding groove at the corresponding position. By using the sliding blocks 24 in the sliding groove, the movement of the strip clamp 14 can be supported and guided, improving the stability of the movement and preventing shaking.
[0039] Anti-slip pads 25 are attached to the side of the strip clamp 14. The anti-slip pads 25 on the two strip clamps 14 inside the strip clamp 13 are arranged opposite each other. The anti-slip pads 25 can prevent the strip from slipping when it is fixed and clamped.
[0040] In use, firstly, use the mounting block 2 and mounting bolt 3 to fix the mounting housing 1 in place. Adjust the height of the upper jig plate 12 according to the length of the strip. When adjusting, pull the pull plate 21, which drives the adjusting rod 20 to move. When the adjusting rod 20 disengages from the adjusting hole, the sliding sleeve 11 unlocks. At this time, the spring 22 deforms, and the upper jig plate 12 slides on the surface of the column 10, supported by the sliding sleeve 11. After sliding to the appropriate position, release the pull plate 21. The elastic force of the spring 22 drives the adjusting rod 20 to reset and insert into the adjusting hole, thereby locking the position of the upper jig plate 12. Then, place the strip into the upper and lower strip clips. Inside the seat 13, rotating the knob drives the movable strip clamping plate 14 to move. The two strip clamping plates 14 inside the strip clamping seat 13 are used to clamp and fix the ends of the strip. After fixing, a fatigue test is performed. During the test, the lifting screw 4 can be rotated by rotating the handwheel, which in turn drives the chassis 8 to rise and fall through the transverse connecting plate 6 and the longitudinal connecting plate 7, thereby driving the strip to rise and fall to achieve fatigue tests at different positions. When a strip is tested, the positioning pin 18 is pulled out. At this time, the lower fixture plate 9 is unlocked. Rotating the lower fixture plate 9 realizes the position switching of the strip. After switching, the positioning pin 18 is inserted to lock it, and then the fatigue test is performed again.
Claims
1. A fixture for strip fatigue testing, characterized in that: The system includes a mounting housing (1), with mounting blocks (2) fixedly installed at each of the four corners of the mounting housing (1). Mounting bolts (3) are threaded onto the mounting blocks (2). A lifting screw (4) is rotatably mounted inside the mounting housing (1). The bottom end of the lifting screw (4) extends out of the mounting housing (1) and is fixedly mounted with a handwheel. A threaded plate (5) is threaded onto the outer surface of the lifting screw (4). A transverse connecting plate (6) is fixedly mounted on the side of the threaded plate (5). The transverse connecting plate (6) extends out of the mounting housing (1) through a channel opened on the side of the mounting housing (1) and is fixedly mounted with a longitudinal connecting plate (7). A bottom plate is fixedly mounted on the top of the longitudinal connecting plate (7). The chassis (8) has a lower jig plate (9) rotatably mounted on its upper surface. A column (10) is fixedly mounted on the upper surface of the lower jig plate (9). A sliding sleeve (11) is movably disposed on the outer surface of the column (10). An upper jig plate (12) is fixedly mounted on the outer surface of the sliding sleeve (11). Several strip holders (13) are fixedly mounted on the upper surface of the lower jig plate (9) and the lower surface of the upper jig plate (12). Two strip holders (14) are disposed inside the strip holder (13). One strip holder (14) is fixedly mounted on the inner wall of the strip holder (13), and the other strip holder (14) is movably disposed inside the strip holder (13).
2. The strip fatigue test tooling of claim 1, wherein: A plurality of guide rods (15) are fixedly installed on the inner wall of the mounting housing (1), and the threaded plate (5) is slidably installed on the outer surface of the plurality of guide rods (15).
3. The strip fatigue test tooling of claim 1, wherein: A plurality of positioning blocks (16) are fixedly installed on the outer surface of the lower jig plate (9). Positioning holes are provided on the positioning blocks (16). The plurality of positioning blocks (16) and the plurality of strip holders (13) on the lower jig plate (9) are arranged opposite to each other. A positioning block (17) is fixedly installed on the surface of the lower jig plate (9). A positioning pin (18) is inserted into the positioning block (17). The positioning pin (18) and the positioning hole are used in conjunction.
4. The strip fatigue test tooling of claim 1, wherein: The outer surface of the column (10) is fixedly equipped with several limiting strips (19), and the inner wall of the sliding sleeve (11) is provided with several limiting grooves. The limiting strips (19) and the limiting grooves are used in conjunction.
5. The strip fatigue test tooling of claim 1, wherein: An adjusting rod (20) is slidably mounted on the sliding sleeve (11). A pull plate (21) is fixedly mounted on one end of the adjusting rod (20). A spring (22) is fixedly mounted between the pull plate (21) and the sliding sleeve (11). Several adjusting holes are provided on the column (10). The adjusting rod (20) is used in conjunction with the adjusting holes.
6. The strip fatigue test tooling of claim 1, wherein: A fixing screw (23) is threaded onto the strip holder (13). A knob is fixedly installed at one end of the fixing screw (23), and the other end of the fixing screw (23) is rotatably connected to the movable strip holder (14).
7. The strip fatigue test tooling of claim 1, wherein: The strip clamp plate (14) of the activity setting has several sliding blocks (24) fixedly installed on its surface. The inner wall of the strip clamp base (13) has several sliding grooves. The sliding blocks (24) are slidably installed on the inner wall of the sliding groove at the corresponding position.
8. The strip fatigue test tooling of claim 1, wherein: The side of the strip clamp (14) is attached with anti-slip pads (25), and the anti-slip pads (25) on the two strip clamps (14) in the strip clamp seat (13) are arranged opposite each other.