Spring fatigue detection device for spring production

Abstract

The utility model relates to the field of spring detection, in particular to a spring fatigue detection device for spring production, which comprises an operation table and a top plate, four corners of the operation table and the top plate are respectively provided with a supporting column, a pressing plate assembly is arranged between the operation table and the top plate, and the top plate is provided with a telescopic rod assembly for driving the pressing plate assembly to move downwards. A base is arranged on the operation table, a plurality of first movable notches are formed in the base at intervals in the radial direction of the base, and concentric calibration assemblies are arranged in the first movable notches respectively. When the spring is located on the base and the concentric calibration assembly is located on the inner side of the spring, the driving mechanism drives the circumferential expansion and contraction device to expand and move towards the outer side of the base, at the moment, the calibration limiting rods move in the corresponding first movable notches, the bottom end of an inner cavity of the spring is limited, and under cooperation of the pressing plate assembly and the telescopic rod assembly, the telescopic rod assembly can rotate. And the conical limiting table is inserted into the top end of the spring, so that the spring is located at the same position during detection, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of spring detection, in particular to a spring fatigue detection device used in spring production. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials deform under the action of external force and return to their original shape after the external force is removed. They are also called "springs" and are generally made of spring steel. There are many types of springs. According to their shapes, there are mainly coil springs, scroll springs, leaf springs, special-shaped springs, etc. Since springs play a key role in many mechanical equipment and structures, the stability and reliability of their performance are directly related to the safe operation of the equipment. Therefore, after the spring manufacturing is completed, the springs in the corresponding production batch need to be sampled for fatigue testing.

[0003] The general testing method is to place the finished spring on the spring fatigue testing device, and then simulate the stress changes of the spring during repeated loading and unloading to evaluate its fatigue life and durability, so as to determine whether it can meet the use requirements and find potential problems with the spring, and then optimize the manufacturing process or improve the design to improve the performance and reliability of the spring. In the spring testing process, we generally need to place the spring in the corresponding center position of the testing device. If the spring is not placed in the center, it will cause the spring to be subjected to uneven force during the test, thereby affecting the accuracy of the test results. It may also rub or collide with the instrument during the test, causing damage to the instrument. At the same time, placing the spring in the center can ensure that the conditions of each test are as consistent as possible, thereby improving the repeatability of the test. This is very important for comparing the fatigue properties of different springs or evaluating the performance changes of the same spring under different conditions. In the subsequent data analysis, the fatigue characteristics and failure modes of the spring can be more accurately identified, thereby providing valuable basis for improving spring design or optimizing use conditions.

[0004] With respect to the above-mentioned related technologies, the inventors found that before the fatigue test of the spring, the conventional operation method is that the staff manually places the spring in a relatively central position of the detection device. However, the manual placement of the spring not only affects the detection efficiency, but also the angle of the placement position is not very accurate. When comparing the fatigue performance of different springs, there will be a certain error in the placement position, which will affect the accuracy of the test results. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a spring fatigue detection device for spring production, which is convenient for improving the detection efficiency of the spring and can also reduce the error of spring placement when comparing the fatigue performance of different springs, thereby improving the accuracy of the test.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a spring fatigue detection device for spring production, comprising: an operating table and a top plate, the four corners of the operating table and the top plate are respectively installed with support columns, a pressure plate assembly is arranged between the operating table and the top plate, a telescopic rod assembly for driving the pressure plate assembly to move downward is installed on the top plate, a base is arranged on the operating table, a plurality of movable notches 1 are arranged at intervals along the radial direction of the base, concentric calibration assemblies are respectively arranged in the movable notches 1, a driving mechanism for driving the concentric calibration assembly to move toward the center of the base or toward the outside of the base is installed in the operating table, and the concentric calibration assemblies are respectively always located in the movable notches 1;

[0007] Both sides of the top of the operating table are respectively connected with V-shaped clamping mechanisms.

[0008] By adopting the above technical solution, when testing the spring, the spring is placed on the base, and the concentric calibration component is located on the inner side of the spring. Under the action of the driving mechanism, the concentric calibration component is driven to move synchronously in the movable slot and move toward the outside of the base. The concentric calibration component expands outward to apply pressure to the inner side of the spring, so that it is located at the center of the base. When comparing the fatigue performance of different springs, the springs are limited at the same position, thereby improving the accuracy of the detection.

[0009] In a preferred example, the utility model can be further configured as follows: the concentric calibration component includes a calibration limit rod, a notch is provided on the top of the calibration limit rod, a plurality of rollers are installed at intervals in the notch, and both ends of the outer circle of the rollers are respectively located on the outside of the calibration limit rod.

[0010] By adopting the above technical solution, the calibration limit rods expand outwards respectively under the action of the driving mechanism, and when the spring is compressed, the roller contacts the spring, reducing the wear of the spring and the calibration limit rod.

[0011] In a preferred example, the utility model can be further configured as follows: a groove is provided on the top of the operating table, the driving mechanism includes a mounting plate connected to the groove, the mounting plate is provided with movable slots 2 that match the movable slots 1 along its radial intervals, U-shaped moving blocks are respectively provided in the movable slots 2, the bottom of the U-shaped moving blocks is connected to a limiting plate, the limiting plate is located at the bottom of the mounting plate, a circular expansion and contraction device is provided between the mounting plate and the base, an electric push rod 1 is installed in the operating table, the protruding end of the electric push rod 1 passes through the mounting plate and is connected to the bottom of the circular expansion and contraction device, and the top of the circular expansion and contraction device is connected to the base.

[0012] By adopting the above technical solution, when the electric push rod is extended, it drives the circular expansion and contraction device to expand around the base, and drives the calibration limit rod to limit the inner cavity of the spring. When the electric push rod is retracted, it drives the circular expansion and contraction device to retract toward the center of the base, thereby facilitating the spring to be mounted on the concentric calibration component. At the same time, it can also adapt to springs of different diameters for testing.

[0013] In a preferred example, the utility model can be further configured as follows: the circular expansion and contraction device includes two mounting plates symmetrically arranged up and down, and the outer circles of the mounting plates are respectively connected with hinge seats corresponding to the movable slots, and movable rods are rotatably connected in the hinge seats through pins, and one side of the movable rods is respectively provided with a clearance groove, and the two movable rods corresponding to the upper and lower parts are respectively symmetrically cross-arranged, and the two movable rods corresponding to the upper and lower parts are rotatably connected through pins and the pins are passed through the center positions of the two movable rods, and movable grooves are respectively provided on both sides of the U-shaped movable block, and the higher end of the movable rod away from the hinge seat is rotatably connected to the U-shaped movable block through pins, and the two sides of the movable rod away from the lower end of the hinge seat are respectively connected with limiting rods, and the limiting rods are respectively located in the movable grooves and slidably connected to the movable grooves.

[0014] By adopting the above technical solution, when the electric push rod is extended, it drives the bottom mounting plate to move upward. At this time, under the action of the hinge seat, the two intersecting movable rods move in a cross shape, shortening the distance between the two mounting plates, and the limit rod moves in the movable groove and squeezes the movable rod to move in the movable groove second, thereby realizing the expansion movement.

[0015] In a preferred example, the utility model can be further configured as follows: the V-shaped clamping mechanism includes a clamping plate and two symmetrically arranged guide rails, the guide rails are respectively slidably connected with sliders, the clamping plate is connected to the sliders, a V-shaped clamping opening is opened on the side of the clamping plate close to the base, two rolling members are symmetrically arranged on the inner side of the V-shaped clamping opening, a nut seat is provided between the two guide rails, a driving rod is threadedly connected to the nut seat, one end of the driving rod is connected to a handle, and the other end is rotatably connected to the clamping plate, and the bottom of the clamping plate is higher than the top of the base.

[0016] By adopting the above technical solution, when the handle drives the driving rod to rotate, the driving clamp drives the slider to move on the guide rail, and the V-shaped clamping mouth clamps and fixes the bottom end of the spring to prevent the spring from jumping out during fatigue testing.

[0017] In a preferred example, the utility model can be further configured as follows: the rolling element includes two symmetrically arranged mounting seats, and a roller is rotatably connected between the mounting seats.

[0018] By adopting the above technical solution, after the clamp fixes the bottom end of the spring, the pressure plate assembly and the telescopic rod assembly cooperate with each other to perform fatigue testing on the spring. During the testing process, the spring is compressed and the distance between the springs is shortened. The bottom end spring contacts the roller, driving the roller to rotate, thereby preventing wear on the spring surface and the clamp.

[0019] In a preferred example, the utility model can be further configured as follows: the pressure plate assembly includes a movable plate, the four sides of the movable plate are respectively mounted on support columns, the bottom of the movable plate is connected to a pressure sensor, the bottom of the pressure sensor is connected to a top seat with a U-shaped cross-section, the inner side of the top seat is connected to a conical limit platform, and the center of the top seat and the base are on the same axis.

[0020] By adopting the above technical solution, the telescopic rod assembly drives the movable plate to move downward, so that the top seat cover is set at the top of the spring, and the conical limit table can be quickly inserted into the top of the spring to ensure that the spring is in a centered position during testing, and when comparing the fatigue performance of different springs, the spring is limited to a uniform position.

[0021] In a preferred example, the utility model can be further configured as follows: the telescopic rod assembly includes two symmetrically arranged electric push rods 2, and the extended ends of the electric push rods 2 are respectively connected to the moving plate.

[0022] By adopting the above technical solution, the two electric push rods synchronously drive the pressure plate assembly to move up and down, thereby realizing fatigue detection test on the spring.

[0023] In summary, the utility model includes at least one of the following beneficial technical effects of a spring fatigue detection device for spring production:

[0024] 1. When the spring is located on the base and the concentric calibration assembly is located on the inner side of the spring, the driving mechanism drives the circular expansion and contraction device to expand and move toward the outer side of the base. At this time, the calibration limit rod moves in the corresponding movable notch 1 to limit the bottom end of the inner cavity of the spring, so that it is located at the center of the circle of the base. With the cooperation of the pressure plate assembly and the telescopic rod assembly, the conical limit table is quickly inserted into the top of the spring to ensure that the spring is in the same position during detection, thereby improving the accuracy of its detection.

[0025] 2. After the spring is initially fixed, the handle drives the driving rod to rotate, and the driving clamp drives the slider to move on the guide rail, and the V-shaped clamping mouth clamps and fixes the bottom end of the spring to prevent the spring from jumping out during fatigue testing, and cooperates with the top seat to improve the protection performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a front view of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the driving mechanism of the utility model;

[0030] Figure 4 It is a structural schematic diagram of the circumferential expansion and contraction device of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the V-shaped clamping mechanism of the utility model.

[0032] In the figure: 1, operating table; 2, top plate; 3, support column; 40, pressure plate assembly; 50, telescopic rod assembly; 60, concentric calibration assembly; 70, driving mechanism; 80, V-shaped clamping mechanism; 9, base; 11, movable notch 1; 12, groove;

[0033] 41. Moving plate; 42. Pressure sensor; 43. Top seat; 44. Conical limit table;

[0034] 51. Electric push rod 2;

[0035] 61. Calibration limit rod; 62. Notch; 63. Roller;

[0036] 71. Mounting plate; 72. Movable notch 2; 73. U-shaped moving block; 74. Limiting plate; 75. Circumferential expansion and contraction device; 76. Electric push rod 1; 77. Moving slot;

[0037] 81. Clamp; 82. Guide rail; 83. Slider; 84. V-shaped clamping opening; 85. Rolling element; 86. Nut seat; 87. Driving rod; 88. Handle;

[0038] 751, mounting plate; 752, hinged seat; 753, movable rod; 754, clearance groove; 755, limit rod; 851, mounting seat; 852, roller. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0041] Reference Figure 1-5 , a spring fatigue detection device for spring production disclosed by the utility model comprises: an operating table 1 and a top plate 2, the four corners of the operating table 1 and the top plate 2 are respectively installed with support columns 3, a pressing plate assembly 40 is arranged between the operating table 1 and the top plate 2, a telescopic rod assembly 50 for driving the pressing plate assembly 40 to move downward is installed on the top plate 2, a base 9 is arranged on the operating table 1, the pressing plate assembly 40 comprises a moving plate 41, the four sides of the moving plate 41 are respectively mounted on the support columns 3, a pressure sensor 42 is connected to the bottom of the moving plate 41, a top seat 43 with a U-shaped cross section is connected to the bottom of the pressure sensor 42, a conical limiting platform 44 is connected to the inner side of the top seat 43, the center of the top seat 43 and the base 9 are on the same axis, and the telescopic rod assembly 50 comprises symmetrically arranged There are two electric push rods 51 disposed therein, and the protruding ends of the electric push rods 51 are respectively connected to the movable plate 41. The base 9 is provided with a plurality of movable notches 11 at intervals along its radial direction, and a concentric calibration component 60 is respectively provided in the movable notches 11. A driving mechanism 70 for driving the concentric calibration component 60 to move toward the center of the base 9 or toward the outside of the base 9 is installed in the operating table 1. The concentric calibration component 60 is always located in the movable notches 11. The concentric calibration component 60 includes a calibration limit rod 61, and a notch 62 is provided at the top of the calibration limit rod 61. A plurality of rollers 63 are installed at intervals in the notch 62, and the outer ends of the rollers 63 are respectively located on the outside of the calibration limit rod 61, and V-shaped clamping mechanisms 80 are respectively connected to the two sides of the top of the operating table 1.

[0042] The distance between the top of the calibration limit rod 61 and the top of the base 9 is preferably 9 cm-22 cm. At the same time, the calibration limit rod 61 is preferably 4, and the matching movable notches 11 are also 4, which are evenly distributed on the base 9. The spring to be measured is placed on the base 9 and the bottom end of the spring is sleeved on the surface of the concentric calibration component 60. The concentric calibration component 60 is driven by the driving mechanism 70 to move along the movable notch 11 toward the outside of the base 9. At this time, the calibration limit rod 61 contacts and limits the bottom of the inner cavity of the spring, and then the electric push rod 51 extends. The movable plate 41 is driven to move downward, so that the conical limiting platform 44 is quickly plugged into the top of the spring, and the top seat 43 is covered on the top of the spring for protection, so that the spring is limited on the same axis, so that the placement position can be calibrated and unified, and when comparing the fatigue performance of different springs, the error of spring placement can be reduced, thereby improving the accuracy of spring testing. On the other hand, after the spring is fixed in the placement position, the bottom end of the spring is limited by the V-shaped clamping mechanism 80, and cooperates with the top seat 43 to improve the safety protection performance during spring detection.

[0043] A groove 12 is provided at the top of the operating table 1, and the driving mechanism 70 includes a mounting plate 71 connected to the groove 12. The mounting plate 71 is provided with movable grooves 72 that match the movable grooves 11 at intervals along its radial direction. U-shaped moving blocks 73 are respectively provided in the movable grooves 72. The bottom of the U-shaped moving blocks 73 is connected to a limiting plate 74. The limiting plate 74 is located at the bottom of the mounting plate 71. A circumferential expansion and contraction device 75 is provided between the mounting plate 71 and the base 9. An electric push rod 1 76 is installed in the operating table 1. The protruding end of the electric push rod 1 76 passes through the mounting plate 71 and is connected to the bottom of the circumferential expansion and contraction device 75. The top of the circumferential expansion and contraction device 75 is connected to the base 9. The circumferential expansion and contraction device 75 includes two mounting plates 751 that are symmetrically arranged up and down. The outer circle of the mounting plate 751 is They are respectively connected to articulated seats 752 corresponding to the movable slots 11, and movable rods 753 are rotatably connected to the hinged seats 752 through pins. A yield groove 754 is provided on one side of the movable rod 753. The two corresponding movable rods 753 are symmetrically cross-arranged, and the two corresponding movable rods 753 are rotatably connected through pins and the pins are passed through the center positions of the two movable rods 753. Moving grooves 77 are respectively provided on both sides of the U-shaped movable block 73. The higher end of the movable rod 753 away from the articulated seat 752 is rotatably connected to the U-shaped movable block 73 through pins, and the two sides of the movable rod 753 away from the lower end of the articulated seat 752 are respectively connected to limit rods 755, and the limit rods 755 are respectively located in the moving grooves 77 and slidably connected to the moving grooves 77.

[0044] The movable slots 72 and the movable rods 753 are preferably 4 in number and are distributed in a cross shape. When the electric push rod 76 is extended, the mounting plate 751 at the bottom is driven to move upward. At this time, under the action of the hinge seat 752, the two mutually crossed movable rods 753 move in a cross shape and reduce the distance between the two mounting plates 751. At the same time, the movable rod 753 is driven to move in the movable slot 72, and the limit rod 755 moves in the movable groove 77 and cooperates with the limit plate 74 to ensure that the movable rod 753 moves stably, thereby driving the calibration limit rod 61 to realize expansion movement, limit the bottom end of the inner cavity of the spring, and limit the spring at the center of the base 9. In addition, when the electric push rod 76 is retracted, the distance between the two mounting plates 751 becomes longer, and the movable rods 753 move toward the center of the mounting plates 751 respectively, and drive the calibration limit rod 61 to realize contraction movement, so that the spring can be quickly placed on the base 9 and adapted to springs of different diameters for detection and use.

[0045] The V-shaped clamping mechanism 80 includes a clamping plate 81 and two symmetrically arranged guide rails 82, on which sliders 83 are respectively slidably connected, and the clamping plate 81 is connected to the sliders 83. A V-shaped clamping opening 84 is opened on the side of the clamping plate 81 close to the base 9, and two rolling members 85 are symmetrically arranged on the inner side of the V-shaped clamping opening 84. A nut seat 86 is provided between the two guide rails 82, and a driving rod 87 is threadedly connected to the nut seat 86. One end of the driving rod 87 is connected to a handle 88, and the other end is rotatably connected to the clamping plate 81. The bottom of the clamping plate 81 is higher than the top of the base 9. The rolling member 85 includes two symmetrically arranged mounting seats 851, and a roller 852 is rotatably connected between the mounting seats 851.

[0046] The top of the clamping plate 81 is higher than the top of the calibration limit rod 61, so the protective height of the clamping plate 81 is increased. After the spring is fixed in place, the driving rod 87 is driven to rotate through the handle 88, and the clamping plate 81 and the slider 83 are driven to move on the guide rail 82, driving the two clamping plates 81 to move toward each other, so that the V-shaped clamping mouth 84 clamps and fixes the bottom end of the spring, and prevents the spring from popping out during fatigue testing. In addition, the spring is compressed during the spring testing process. At this time, the distance between the springs is shortened, and the bottom end of the spring contacts the roller 852, driving the roller 852 to rotate, thereby reducing the wear on the spring surface and the clamping plate 81, and improving the protective performance of the equipment and the spring.

[0047] The implementation principle of this embodiment is as follows: when in use, the staff places the sample spring on the base 9, and the bottom end of the spring is covered on the concentric calibration assembly 60, then the electric push rod 1 76 is extended to drive the bottom mounting plate 751 to move upward, and under the action of the hinge seat 752, the two intersecting movable rods 753 are moved in a cross shape, and the distance between the two mounting plates 751 is reduced, and the movable rod 753 is driven to move in the movable groove 2 72, and the movable rod 753 drives the calibration limit rod 61 to achieve expansion movement, and the bottom end of the spring is calibrated and limited, and then the electric push rod 2 51 is extended to drive the movable plate 41 to move downward, so that the conical limit table 44 is quickly plugged into the top of the spring. The top seat 43 is set on the top of the spring for protection, the spring is limited on the same axis, the placement position is unified, and when comparing the fatigue performance of different springs, the error of spring placement is reduced, thereby improving the accuracy of spring testing. After the spring is fixed in place, the staff rotates the handle 88 to drive the driving rod 87 to rotate, and the driving rod 87 drives the clamping plate 81 and the slider 83 to move on the guide rail 82, so that the two clamping plates 81 move toward each other, and the bottom end of the spring is clamped and fixed by the V-shaped clamping mouth 84, thereby preventing the spring from jumping out during fatigue testing. Then the electric push rod 2 51 continues to drive the moving plate 41 to move downward to carry out relevant detection tests.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A spring fatigue detection device for spring production, comprising: An operating table (1) and a top plate (2), wherein the four corners of the operating table (1) and the top plate (2) are respectively provided with support columns (3), a pressure plate assembly (40) is provided between the operating table (1) and the top plate (2), and a telescopic rod assembly (50) for driving the pressure plate assembly (40) to move downward is installed on the top plate (2), characterized in that a base (9) is provided on the operating table (1), and the base (9) is provided with a plurality of movable slots (11) spaced apart along its radial direction, and concentric calibration assemblies (60) are respectively provided in the movable slots (11), and a driving mechanism (70) for driving the concentric calibration assembly (60) to move toward the center of the base (9) or toward the outside of the base (9) is installed in the operating table (1), and the concentric calibration assembly (60) is always located in the movable slots (11); Both sides of the top of the operating table (1) are respectively connected with V-shaped clamping mechanisms (80).

2. A spring fatigue detection device for spring production according to claim 1, characterized in that: The concentric calibration component (60) comprises a calibration limit rod (61), a notch (62) is provided at the top of the calibration limit rod (61), a plurality of rollers (63) are installed at intervals in the notch (62), and two ends of the outer circle of the rollers (63) are respectively located outside the calibration limit rod (61).

3. A spring fatigue detection device for spring production according to claim 1, characterized in that: The top of the operating table (1) is provided with a groove (12), and the driving mechanism (70) comprises a mounting plate (71) connected to the groove (12), and the mounting plate (71) is provided with movable grooves (72) that match the movable grooves (11) at intervals along its radial direction, and U-shaped moving blocks (73) are respectively provided in the movable grooves (72), and the bottom of the U-shaped moving blocks (73) is connected to a limiting plate (74), and the limiting plate (74) is located at the bottom of the mounting plate (71), and a circumferential expansion and contraction device (75) is provided between the mounting plate (71) and the base (9), and an electric push rod (76) is installed in the operating table (1), and the protruding end of the electric push rod (76) passes through the mounting plate (71) and is connected to the bottom of the circumferential expansion and contraction device (75), and the top of the circumferential expansion and contraction device (75) is connected to the base (9).

4. A spring fatigue detection device for spring production according to claim 3, characterized in that: The circumferential expansion and contraction device (75) comprises two mounting plates (751) symmetrically arranged in the upper and lower parts, and the outer circles of the mounting plates (751) are respectively connected with hinge seats (752) corresponding to the movable notches (11), and movable rods (753) are rotatably connected in the hinge seats (752) through pin shafts, and one side of the movable rods (753) is respectively provided with a clearance groove (754), and the two movable rods (753) corresponding to the upper and lower parts are respectively symmetrically arranged in a cross-shaped manner, and the two movable rods (753) corresponding to the upper and lower parts are respectively connected through the hinge seats (752) to rotate. The pin shaft is rotatably connected and the pin shaft is passed through the center position of the two movable rods (753). The two sides of the U-shaped movable block (73) are respectively provided with movable grooves (77). The higher end of the movable rod (753) away from the hinge seat (752) is rotatably connected to the U-shaped movable block (73) through the pin shaft. The two sides of the lower end of the movable rod (753) away from the hinge seat (752) are respectively connected to limit rods (755). The limit rods (755) are respectively located in the movable grooves (77) and are slidably connected to the movable grooves (77).

5. A spring fatigue detection device for spring production according to claim 1, characterized in that: The V-shaped clamping mechanism (80) comprises a clamping plate (81) and two symmetrically arranged guide rails (82), wherein the guide rails (82) are respectively slidably connected with sliders (83), the clamping plate (81) is connected to the sliders (83), a V-shaped clamping opening (84) is provided on the side of the clamping plate (81) close to the base (9), two rolling members (85) are symmetrically arranged on the inner side of the V-shaped clamping opening (84), a nut seat (86) is provided between the two guide rails (82), a driving rod (87) is threadedly connected to the nut seat (86), one end of the driving rod (87) is connected to a handle (88), and the other end is rotatably connected to the clamping plate (81), and the bottom of the clamping plate (81) is higher than the top of the base (9).

6. A spring fatigue detection device for spring production according to claim 5, characterized in that: The rolling element (85) comprises two symmetrically arranged mounting seats (851), and a roller (852) is rotatably connected between the mounting seats (851).

7. A spring fatigue detection device for spring production according to claim 1, characterized in that: The pressure plate assembly (40) includes a movable plate (41), the four sides of which are respectively mounted on the support columns (3), the bottom of the movable plate (41) is connected to a pressure sensor (42), the bottom of the pressure sensor (42) is connected to a top seat (43) with a U-shaped cross-section, the inner side of the top seat (43) is connected to a conical limit platform (44), and the center of the top seat (43) and the base (9) are on the same axis.

8. A spring fatigue detection device for spring production according to claim 7, characterized in that: The telescopic rod assembly (50) comprises two symmetrically arranged electric push rods (51), and the extended ends of the electric push rods (51) are respectively connected to the moving plate (41).

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