Special-shaped cover fatigue testing device and testing process thereof

Abstract

The invention discloses a special-shaped cover fatigue testing device and a testing process thereof. The device comprises a shell, and a plurality of test benches are arranged at the top of the shell at equal intervals; the clamping structures are installed at the four top corners of the top of the test board in a sliding mode; the driving structures are mounted on the two sides of the bottom of the test board; the arc-shaped plate is located at the bottom of the test board and covers the driving structure; and the pushing structure is installed on the test bench in a sliding manner through an arc-shaped plate. According to the invention, a worker can adjust the position of a limiting plate on an arc-shaped plate to cooperate with a grating sensing structure, and the testing device can test flip covers of different shapes and specifications and collect and output data, so that a pushing structure can be in contact with a cover cap on the flip cover, the situation that the cover cap on the flip cover rebounds during testing is avoided, and the testing efficiency is improved. Flip testing data are more accurate, and the problem that an existing testing device is single in function is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing devices, in particular to a fatigue testing device for a special-shaped cover and a testing process thereof. Background Art

[0002] With the improvement of people's living standards, the market demand for daily chemical products is increasing, and the requirements for the quality of daily chemical products are also getting higher and higher. In daily chemical products, the use of container flip covers is very common. The fatigue of the reset structure inside the container flip cover is one of the main indicators of the quality of the container flip cover, so the fatigue test of the reset structure inside the container flip cover is also very important.

[0003] When testing the cup cover flip structure on the existing special-shaped flip cover fatigue testing device, the cap is easy to fall off the flip structure, and the push rod on the existing cup cover flip structure needs to be replaced with different cup cover flip angles according to flip covers of different sizes, which is troublesome to operate, and the existing cup cover flip structure can only push the flip cover to rotate at a fixed angle. When testing flip covers of different shapes and specifications, the existing cup cover flip structure and the cap of the flip cover will not contact before working. Therefore, during the working process of the existing cup cover flip structure, the cap will rebound, resulting in inaccurate cup cover test data, and the clamping structure on the testing device is not strong enough, and the cup cover is easy to detach from the clamping structure due to the push of the cup cover flip structure. Summary of the invention

[0004] The object of the present invention is to provide a fatigue testing device for a special-shaped cover and a testing process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a fatigue testing device for a special-shaped cover and a testing process thereof, comprising: A housing, a plurality of test benches are arranged equidistantly on the top of the housing; A clamping structure, wherein the clamping structure is slidably mounted on four top corners of the top of the test bench; A driving structure, wherein the driving structure is installed on both sides of the bottom of the test bench; An arc-shaped plate, which is located at the bottom of the test bench and covers the driving structure; A pushing structure, wherein the pushing structure is slidably mounted on the test bench through an arc plate; The grating sensing structure and the limiting plate are both slidably mounted on the inner wall of the arc plate.

[0006] By adopting the above technical solution, the staff places the flip cover to be tested on the test bench, and then drives the clamping structure through the driving structure to fix the flip cover to be tested on the test bench. The staff starts the pushing structure to make the pushing structure push the cap on the flip cover to rotate from the bottom end of one side of the test bench. During the movement of the pushing structure, the grating sensing structure can detect the moving range of the pushing structure and cooperate with the limit plate to enable the pushing structure to adjust the flip angle of the cap when pushing the cap on the flip cover to be tested, thereby improving the test data of the flip cover.

[0007] Preferably, an electric box is installed at the bottom end of the shell, a plurality of first movable door panels are rotatably installed at the bottom end of one side of the shell, a control panel is installed at the top of one side of the first movable door panels, a plurality of second movable door panels are rotatably installed at the top of one side of the shell, an information processing box is installed on the other side of the top of the shell, and a plurality of display screens are equidistantly installed in the middle position of one side of the information processing box.

[0008] By adopting the above technical solution, the electrical box, control panel, information processing box, multiple display screens and the electronic components on the clamping structure, driving structure, pushing structure, grating sensing structure and limit plate are connected by telecommunication. The staff can control the clamping structure and driving structure through the control panel, and the staff can adjust the rotation angle range of the flip cover cap through the pushing structure, grating sensing structure and limit plate, thereby improving the test data of the flip cover.

[0009] Preferably, the clamping structure includes a clamping block, a positioning electric cylinder is installed inside the clamping block, a card slot is opened on one side of the clamping block, an extrusion sensor and a plurality of return springs are installed inside the card slot on the clamping block, and the clamping block is slidably installed with a plurality of card blocks through the return springs.

[0010] By adopting the above technical solution, when the clamping structure clamps the flip cover, the multiple clamping blocks on the clamping structure cooperate with the multiple return springs, so that the clamping block can be clamped between the multiple clamping structures according to the structure of the outer surface of the flip cover, thereby preventing the flip cover from detaching from the test bench, and the extrusion sensor can prevent the flip cover from being over-extruded and damaged during the extrusion process of the clamping block.

[0011] Preferably, a groove is provided on the top of the clamping block, the clamping block is connected to the positioning electric cylinder via the groove, and the output end of the positioning electric cylinder passes through the clamping block and extends to the outside.

[0012] By adopting the above technical solution, the staff can fix the position of the clamping structure on the test bench by positioning the electric cylinder to prevent the clamping structure from sliding during the flip cover test, causing the flip cover to detach from the clamping structure.

[0013] Preferably, the driving structure includes a screw rod and a lifting cylinder, a screw rod is installed at the four top corners of the bottom of the test bench, a first bevel gear is installed near the middle position of the screw rod, a lifting cylinder is installed on both sides of the middle position at both ends of the bottom of the test bench, a first servo motor is installed at the output end of the lifting cylinder, a rotating rod is installed at the output end of the first servo motor, and second bevel gears are installed at both ends of the outer surface of the rotating rod.

[0014] By adopting the above technical solution, the staff drives the first servo motor to move up and down through the lifting electric cylinder, so that the second bevel teeth on the rotating rod are engaged with the first bevel teeth on the lead screw. Then the staff can drive the rotating rod to rotate through the first servo motor, thereby driving the lead screw to rotate, and control the movement of the clamping structure on the test bench, so that the clamping structure can move closer to the middle position of the test bench.

[0015] Preferably, the outer surface of the screw rod is threadedly connected to the clamping block, and the first bevel teeth are meshed with the second bevel teeth.

[0016] By adopting the above technical solution, the rotation of the screw rod can drive the clamping block to move on the test bench, and the first bevel gear and the second bevel gear are meshed, and the second bevel gear can drive the screw rod to rotate.

[0017] Preferably, the pushing structure includes an arc-shaped rack and a second servo motor, a plurality of arc-shaped racks are equidistantly arranged and slidably installed on the inner wall of the arc plate, a connecting plate is slidably installed on the top of one side of the arc-shaped rack, a pushing block is installed on the other side of the top of the connecting plate, a positioning bolt is rotatably installed on the top of the arc-shaped rack, a grating bar is installed inside the arc-shaped rack, a laser sensor is installed on the top of the inner wall of the arc-shaped rack, second servo motors are installed at both ends of one side of the bottom of the test bench, a gear is installed on the output end of the second servo motor, and the gear is meshed with the arc-shaped rack.

[0018] By adopting the above technical solution, the push block on the pushing structure can be fixed on the arc-shaped rack by positioning bolts, so that the staff can adjust the position of the push block on the arc-shaped rack according to the size of the flip cover, without the need for the staff to replace the flip cover flip structure, and the operation is convenient and quick.

[0019] Preferably, the grating sensing structure comprises a grating sensor, and the grating sensor is slidably mounted on one end of the inner wall of the arc plate close to the arc-shaped rack, and a push rod is mounted on the other side of the grating sensor.

[0020] By adopting the above technical solution, the staff cooperates with the grating bars through the grating sensing structure, and the grating sensor senses the rotation range of the arc rack through the grating bars, which makes it convenient for the staff to control the number of turns and direction of rotation of the output end of the second servo motor.

[0021] Preferably, a pressure sensor is arranged inside the limit plate, arc-shaped grooves are provided on both sides of the top of the shell, clamping rods are provided at both ends of the limit plate and the push rod, the limit plate and the push rod are clamped with the arc-shaped grooves through the clamping rods, sliding grooves are provided at the four top corners of the top of the test bench, the clamping block is connected to the screw rod through the sliding grooves, and a rectangular hole is provided in the middle position of one side of the top of the test bench, and the size of the rectangular hole on the test bench is slightly larger than the arc-shaped rack.

[0022] By adopting the above technical solution, the pressure sensor on the limit plate can send an electrical signal to the electrical box due to the squeezing of the arc-shaped rack, record the number of times the pushing structure pushes the flip cover cap, and facilitate testing the fatigue value of the flip cover cap. The test bench limits the moving position of the clamping block on the test bench through the slide groove to avoid the clamping block from offsetting when moving on the test bench.

[0023] A fatigue testing process for a special-shaped cover, characterized in that it is applicable to the fatigue testing device for a special-shaped cover as described in any one of claims 1 to 9: S1. Place the flap: Place the flap in the middle of the test bench; S2, fixing and clamping: fixing the flip cover by means of a clamping structure; S3. Adjust the position of the push block: The staff adjusts the position of the push block on the push structure according to the different specifications of the flip cover, so that the push block is in the middle position of the bottom of the flip cover cap; S4. Setting the angle of the arc-shaped rack: The staff sets the position of the limit plate on the arc-shaped plate according to the flip angle of the upper cover cap of different specifications. By moving the rotation angle of the arc-shaped rack, the starting point of the arc-shaped rack can be adjusted; S5. Setting the moving sensing range: The staff sets the moving sensing range of the arc-shaped rack by cooperating the grating sensing structure with the grating bars, so that the arc-shaped rack can move back and forth in the sensing area; S6. Testing the fatigue degree of the flip cover: The grating bar, the laser sensor, the grating sensor and the pressure sensor on the limit plate cooperate to send out an electrical signal, and the electrical box and the information processing box receive the electrical signal and calculate the fatigue degree of the flip cover; S7, release the fixation and remove: the staff will release the fixation of the flip cover after inspection and remove it from the test bench through the cooperation of the clamping structure and the driving structure.

[0024] Compared with the prior art, the present invention has the following beneficial effects: The fatigue testing device for special-shaped covers and the testing process thereof enable the staff to adjust the position of the push block according to the covers of different sizes through the cooperation between the connecting plate and the push block, so that the push structure can adapt to the covers of any sizes, and the push block adjustment operation is convenient.

[0025] The fatigue testing device and testing process of the special-shaped cover can prevent the push block from being separated from the cover during the test because the push block on the pushing structure is located in the middle of the bottom of the cover and the push block is pushed from the middle of the bottom of the cover.

[0026] The fatigue testing device for special-shaped covers and its testing process allow the staff to adjust the position of the limit plate on the curved plate and cooperate with the grating sensing structure. This testing device can test flip covers of different shapes and specifications, and collect and output data, so that the pushing structure can contact the cap on the flip cover, avoiding rebound when testing the cap on the flip cover, making the flip cover test data more accurate, and effectively solving the problem of single function of existing testing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a stereogram of the present invention; Figure 2 It is the front view of the present invention; Figure 3 A top view of the present invention; Figure 4 It is a front cross-sectional view of the internal structure of the present invention; Figure 5 This is a front view of the clamping structure of the present invention; Figure 6 It is a top view cross-sectional view of the clamping structure of the present invention; Figure 7 This is a front view of the test structure of the present invention; Figure 8 A bottom view of the test structure of the present invention; Fig. 9 This is a schematic diagram of the clamping of the flip cover of the test bench of the present invention; Fig.10 It is a side cross-sectional view of the test bench of the present invention; Fig.11 For the present invention Fig.10 A magnified view of the structure at center; Fig.12 For the present invention Fig.10 A magnified view of the structure at B in the middle; Fig.13 This is a test process diagram of the present invention.

[0028] In the figure: 1, shell; 2, electrical box; 3, first movable door panel; 4, control panel; 5, second movable door panel; 6, information processing box; 7, display screen; 8, test bench; 9, clamping structure; 90, clamping block; 91, positioning electric cylinder; 92, reset spring; 93, clamping block; 94, extrusion sensor; 10, driving structure; 101, screw rod; 102, first bevel gear; 103, lifting electric cylinder; 104, first servo motor; 105, rotating rod; 106, second bevel gear; 11, arc plate; 12, pushing structure; 120, arc rack; 121, second servo motor; 122, gear; 123, grating bar; 124, laser sensor; 125, connecting plate; 126, push block; 127, positioning bolt; 13, grating sensing structure; 130, grating sensor; 131, push rod; 14, limit plate. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-10 The present invention provides an embodiment: a fatigue testing device for a special-shaped cover and a testing process thereof, comprising: The housing 1 has a plurality of test benches 8 arranged equidistantly on the top of the housing 1; A clamping structure 9, the clamping structure 9 is slidably mounted on four top corners of the top of the test bench 8; A driving structure 10, the driving structure 10 is installed on both sides of the bottom of the test bench 8; An arc plate 11, the arc plate 11 is located at the bottom of the test bench 8 and covers the driving structure 10; A pushing structure 12, the pushing structure 12 is slidably mounted on the test bench 8 through the arc plate 11; The grating sensing structure 13 and the limiting plate 14 are both slidably mounted on the inner wall of the arc plate 11; The staff places the flip cover to be tested on the test bench 8, and then drives the clamping structure 9 through the driving structure 10 to fix the flip cover to be tested on the test bench 8. The staff starts the pushing structure 12, so that the pushing structure 12 pushes the cap on the flip cover to rotate from the bottom end of one side of the test bench 8. During the movement of the pushing structure 12, the grating sensing structure 13 can detect the moving range of the pushing structure 12, and cooperate with the limit plate 14, so that the pushing structure 12 can adjust the flip angle of the cap when pushing the cap on the flip cover to be tested, thereby improving the test data of the flip cover.

[0031] In this embodiment, an electrical box 2 is installed at the bottom end of the shell 1, a plurality of first movable door panels 3 are rotatably installed at the bottom end of one side of the shell 1, a control panel 4 is installed at the top of one side of the first movable door panel 3, a plurality of second movable door panels 5 are rotatably installed at the top of one side of the shell 1, an information processing box 6 is installed on the other side of the top of the shell 1, and a plurality of display screens 7 are equidistantly installed in the middle position of one side of the information processing box 6, and the electrical box 2, the control panel 4, the information processing box 6, the plurality of display screens 7 are telecommunicationally connected with the electronic components on the clamping structure 9, the driving structure 10, the pushing structure 12, the grating sensing structure 13 and the limiting plate 14. The staff can control the clamping structure 9 and the driving structure 10 through the control panel 4, and the staff can adjust the rotation angle range of the cover cap on the flip cover by cooperating with the pushing structure 12, the grating sensing structure 13 and the limiting plate 14, thereby improving the test data of the flip cover.

[0032] In this embodiment, the clamping structure 9 includes a clamping block 90, a positioning electric cylinder 91 is installed inside the clamping block 90, a card slot is opened on one side of the clamping block 90, an extrusion sensor 94 and a plurality of reset springs 92 are installed inside the card slot on the clamping block 90, and the clamping block 90 is slidably installed with a plurality of clamping blocks 93 through the reset spring 92. When the clamping structure 9 clamps the flip cover, the plurality of clamping blocks 93 on the clamping structure 9 cooperate with the plurality of reset springs 92, so that the clamping block 93 can be clamped between the plurality of clamping structures 9 according to the structure of the outer surface of the flip cover, so as to prevent the flip cover from detaching from the test bench 8, and the extrusion sensor 94 can prevent the flip cover from being over-extruded and damaged during the extrusion process of the clamping block 93.

[0033] In this embodiment, a groove is provided on the top of the clamping block 90, and the clamping block 90 is connected to the positioning electric cylinder 91 through the groove. The output end of the positioning electric cylinder 91 passes through the clamping block 90 and extends to the outside. The staff can fix the position of the clamping structure 9 on the test bench 8 through the positioning electric cylinder 91 to prevent the clamping structure 9 from sliding during the flip cover test, causing the flip cover to detach from the clamping structure 9.

[0034] In this embodiment, the driving structure 10 includes a screw rod 101 and a lifting cylinder 103. The screw rods 101 are installed at the four top corners of the bottom of the test bench 8. The first bevel gear 102 is installed near the middle position of the screw rod 101. The lifting cylinders 103 are installed on both sides of the middle position at both ends of the bottom of the test bench 8. The output end of the lifting cylinder 103 is installed with a first servo motor 104. The output end of the first servo motor 104 is installed with a rotating rod 105. The two ends of the outer surface of the rotating rod 105 are installed with second bevel gears 106. The staff drives the first servo motor 104 to lift and lower through the lifting cylinder 103, so that the second bevel gear 106 on the rotating rod 105 is meshed with the first bevel gear 102 on the screw rod 101. Then the staff can drive the rotating rod 105 to rotate through the first servo motor 104, thereby driving the screw rod 101 to rotate, and controlling the clamping structure 9 to move on the test bench 8, so that the clamping structure 9 can approach the middle position of the test bench 8.

[0035] In this embodiment, the outer surface of the screw rod 101 is threadedly connected to the clamping block 90, and the first bevel gear 102 is meshed with the second bevel gear 106. The rotation of the screw rod 101 can drive the clamping block 90 to move on the test bench 8, and the first bevel gear 102 and the second bevel gear 106 are meshed, and the second bevel gear 106 can drive the screw rod 101 to rotate.

[0036] In this embodiment, the pushing structure 12 includes an arc-shaped rack 120 and a second servo motor 121. A plurality of arc-shaped racks 120 are slidably installed on the inner wall of the arc plate 11 in an equidistant arrangement. A connecting plate 125 is slidably installed on the top of one side of the arc-shaped rack 120. A pushing block 126 is installed on the other side of the top of the connecting plate 125. A positioning bolt 127 is rotatably installed on the top of the arc-shaped rack 120. A grating bar 123 is installed inside the arc-shaped rack 120. A laser sensor 124 is installed on the top of the inner wall of the arc-shaped rack 120. The second servo motor 121 is installed on both ends of one side of the bottom of the test bench 8. A gear 122 is installed on the output end of the second servo motor 121. The gear 122 is meshed with the arc-shaped rack 120. The pushing block 126 on the pushing structure 12 can be fixed to the arc-shaped rack 120 by a positioning bolt 127, so that the staff can adjust the position of the pushing block 126 on the arc-shaped rack 120 according to the size of the flip cover, without the need for the staff to replace the flip cover flip structure, and the operation is convenient and quick.

[0037] In this embodiment, the grating sensing structure 13 includes a grating sensor 130, and the grating sensor 130 is slidably installed on one end of the inner wall of the arc plate 11 close to the arc rack 120, and a push rod 131 is installed on the other side of the grating sensor 130. The staff cooperates with the grating bar 123 through the grating sensing structure 13, and the grating sensor 130 senses the rotation range of the arc rack 120 through the grating bar 123, so that the staff can control the number of revolutions and direction of the output end of the second servo motor 121.

[0038] In this embodiment, a pressure sensor is arranged inside the limit plate 14, arc-shaped grooves are provided on both sides of the top of the shell 1, and clamping rods are provided at both ends of the limit plate 14 and the push rod 131. The limit plate 14 and the push rod 131 are clamped with the arc-shaped grooves through the clamping rods, and sliding grooves are provided at the four top corners of the top of the test bench 8. The clamping block 90 is connected to the screw rod 101 through the sliding grooves. A rectangular hole is provided in the middle position of one side of the top of the test bench 8. The size of the rectangular hole on the test bench 8 is slightly larger than the arc-shaped rack 120. The pressure sensor on the limit plate 14 can send an electrical signal to the electrical box 2 due to the squeezing of the arc-shaped rack 120, and record the number of times the pushing structure 12 pushes the flip cover cap, which is convenient for testing the fatigue value of the flip cover cap. The test bench 8 limits the moving position of the clamping block 90 on the test bench 8 through the sliding groove to avoid the clamping block 90 from moving on the test bench 8. Offset.

[0039] Embodiment 1, as Figure 11-12 As shown, during the operation, the pushing structure 12, with the assistance of the laser sensor 124, can calculate the number of times the pushing structure 12 flips the upper cap of the flip cover, and the grating sensor 130 and the grating bar 123 cooperate to measure the moving distance of the pushing structure 12 on the arc plate 11, and enable the pushing structure 12 to move within the range set by the staff, so as to detect the fatigue of the flip cover, and a limit plate 14 is set on the arc plate 11, and the staff can push the limit plate 14 to move on the arc plate 11, set the starting point of the pushing structure 12, and adjust the starting point of the fatigue test of the upper cap of the flip cover, so as to make the flip cover fatigue test data more complete.

[0040] Embodiment 2, as Fig.13 As shown, S1, placing the flip cover: placing the flip cover in the middle of the test bench 8; S2, fixing and clamping: fixing the flip cover by the clamping structure 9; S3, adjusting the position of the push block: the staff adjusts the position of the push block 126 on the push structure 12 according to the different specifications of the flip cover, so that the push block 126 is in the middle position of the bottom of the flip cover cap; S4, setting the angle of the arc-shaped rack: the staff sets the position of the limit plate 14 on the arc-shaped plate 11 according to the flip angle of the upper cover cap of different specifications, and the starting point of the arc-shaped rack 120 can be adjusted by moving the rotation angle of the arc-shaped rack; S5. Setting the mobile sensing range: The staff sets the mobile sensing range of the arc-shaped rack 120 by coordinating the grating sensing structure 13 with the grating bar 123, so that the arc-shaped rack 120 can move back and forth in the sensing area; S6, testing the fatigue degree of the flip cover: the grating bar 123, the laser sensor 124, the grating sensor 130 and the pressure sensor on the limit plate 14 cooperate to send out an electrical signal, and the electrical box 2 and the information processing box 6 receive the electrical signal and calculate the fatigue degree of the flip cover; S7, release the fixation and remove: the staff cooperates with the clamping structure 9 and the driving structure 10 to release the fixation of the flip cover after the test and remove it from the test bench 8.

[0041] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or scope of the present invention. Therefore, the embodiments of the present invention are exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A fatigue testing device for special-shaped covers, characterized in that: include: A housing (1), wherein a plurality of test benches (8) are arranged equidistantly on the top of the housing (1); A clamping structure (9), wherein the clamping structure (9) is slidably mounted on four top corners of the top of the test bench (8); A driving structure (10), wherein the driving structure (10) is installed on both sides of the bottom of the test bench (8); An arc-shaped plate (11), the arc-shaped plate (11) being located at the bottom of the test bench (8) and covering the driving structure (10); A pushing structure (12), wherein the pushing structure (12) is slidably mounted on the test bench (8) via an arc-shaped plate (11); A grating sensing structure (13) and a limiting plate (14), wherein the grating sensing structure (13) and the limiting plate (14) are both slidably mounted on the inner wall of the arc plate (11).

2. The fatigue testing device for special-shaped covers according to claim 1, characterized in that: An electric box (2) is installed at the bottom end of the shell (1), a plurality of first movable door panels (3) are rotatably installed at the bottom end of one side of the shell (1), a control panel (4) is installed at the top of one side of the first movable door panel (3), a plurality of second movable door panels (5) are rotatably installed at the top of one side of the shell (1), an information processing box (6) is installed at the other side of the top of the shell (1), and a plurality of display screens (7) are equidistantly installed at the middle position of one side of the information processing box (6).

3. The fatigue testing device for special-shaped covers according to claim 1, characterized in that: The clamping structure (9) comprises a clamping block (90), a positioning electric cylinder (91) is installed inside the clamping block (90), a clamping slot is provided on one side of the clamping block (90), an extrusion sensor (94) and a plurality of return springs (92) are installed inside the clamping slot on the clamping block (90), and a plurality of clamping blocks (93) are slidably installed on the clamping block (90) via the return springs (92).

4. The fatigue testing device for special-shaped covers according to claim 3, characterized in that: The top of the clamping block (90) is provided with a groove, and the clamping block (90) is connected to the positioning electric cylinder (91) via the groove, and the output end of the positioning electric cylinder (91) passes through the clamping block (90) and extends to the outside.

5. The fatigue testing device for special-shaped covers according to claim 4, characterized in that: The driving structure (10) comprises a screw rod (101) and a lifting electric cylinder (103); the screw rods (101) are installed at the four top corners of the bottom of the test bench (8); the screw rods (101) are installed with a first bevel gear (102) near the middle position of the screw rod (101); the lifting electric cylinders (103) are installed on both sides of the middle position at both ends of the bottom of the test bench (8); the output end of the lifting electric cylinder (103) is installed with a first servo motor (104); the output end of the first servo motor (104) is installed with a rotating rod (105); and the outer surfaces of the rotating rod (105) are installed with second bevel gears (106) at both ends.

6. The fatigue testing device for special-shaped covers according to claim 5, characterized in that: The outer surface of the screw rod (101) is threadedly connected to the clamping block (90), and the first bevel teeth (102) are meshed with the second bevel teeth (106).

7. The fatigue testing device for special-shaped covers according to claim 6, characterized in that: The pushing structure (12) comprises an arc-shaped rack (120) and a second servo motor (121); a plurality of arc-shaped racks (120) are equidistantly arranged and slidably mounted on the inner wall of the arc-shaped plate (11); a connecting plate (125) is slidably mounted on the top of one side of the arc-shaped rack (120); a pushing block (126) is mounted on the other side of the top of the connecting plate (125); a positioning bolt (127) is rotatably mounted on the top of the arc-shaped rack (120); a grating bar (123) is mounted inside the arc-shaped rack (120); a laser sensor (124) is mounted on the top of the inner wall of the arc-shaped rack (120); and second servo motors (121) are mounted on both ends of one side of the bottom of the test bench (8); a gear (122) is mounted on the output end of the second servo motor (121); and the gear (122) is meshed with the arc-shaped rack (120).

8. The fatigue testing device for special-shaped covers according to claim 7, characterized in that: The grating sensing structure (13) comprises a grating sensor (130), and the grating sensor (130) is slidably mounted on one end of the inner wall of the arc plate (11) close to the arc rack (120), and a push rod (131) is mounted on the other side of the grating sensor (130).

9. The fatigue testing device for special-shaped covers according to claim 8, characterized in that: A pressure sensor is arranged inside the limit plate (14), arc-shaped slots are provided on both sides of the top of the housing (1), and clamping rods are provided at both ends of the limit plate (14) and the push rod (131), and the limit plate (14) and the push rod (131) are clamped with the arc-shaped slots through the clamping rods, and sliding grooves are provided at the four top corners of the top of the test bench (8), and the clamping block (90) is connected to the screw rod (101) through the sliding grooves, and a rectangular hole is provided in the middle position of one side of the top of the test bench (8), and the size of the rectangular hole on the test bench (8) is slightly larger than the arc-shaped rack (120).

10. A fatigue testing process for a special-shaped cover, characterized in that: Applicable to the fatigue testing device for special-shaped covers as described in any one of claims 1 to 9: S1. Place the flap: place the flap in the middle of the test bench (8); S2, fixing and clamping: fixing the flip cover by means of the clamping structure (9); S3, adjusting the position of the push block: the staff adjusts the position of the push block (126) on the push structure (12) according to the different specifications of the flip cover, so that the push block (126) is located in the middle position of the bottom of the flip cover cap; S4, setting the angle of the arc-shaped rack: the staff sets the position of the limit plate (14) on the arc-shaped plate (11) according to the flip angle of the upper cover cap of different specifications, and the starting point of the arc-shaped rack (120) can be adjusted by moving the rotation angle of the arc-shaped rack; S5. Setting the moving sensing range: The staff sets the moving sensing range of the arc-shaped rack (120) by coordinating the grating sensing structure (13) with the grating bar (123), so that the arc-shaped rack (120) can move back and forth in the sensing area; S6, testing the fatigue degree of the flip cover: the grating strip (123), the laser sensor (124), the grating sensor (130) and the pressure sensor on the limit plate (14) cooperate to send out an electrical signal, and the electrical box (2) and the information processing box (6) receive the electrical signal and calculate the fatigue degree of the flip cover; S7, releasing the fixation and removing: the staff uses the clamping structure (9) and the driving structure (10) to match the flip cover after the test, releases the fixation of the flip cover and removes it from the test bench (8).

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