Testing device for testing stress condition of aluminum-zinc alloy template

Abstract

The invention relates to a testing device for testing the stress condition of an aluminum-zinc alloy template. The testing device comprises a testing table, a stress testing mechanism, an arc-shaped protective cover and a pre-clamping mechanism, the stress testing mechanism comprises a bottom plate, a clamping piece, a suction cup, a telescopic piece and a first connecting plate; the pre-clamping mechanism is linked through rotation of the arc-shaped protective cover, so that protection and pre-fixing are synchronously completed, and the test safety is improved while the operation process is simplified; the force of the telescopic piece is decomposed into clamping force and drawing force through the first connecting plate, the clamping force and the drawing force synchronously change along with the thrust of the telescopic piece, it is guaranteed that clamping is stable during formwork stress testing, and it is avoided that slipping affects data accuracy; the suction cups are combined with the self-adaptive clamping design, so that templates with different widths can be adapted, the templates can be kept fixed after being broken, and the safety risk is further reduced; the clamping process does not need to be manually intervened, and the drawing force is adaptively adjusted along with the width of the template, so that the automation degree of the testing device and the adaptability of the testing device to aluminum-zinc alloy templates with different specifications are improved.

Description

Technical Field

[0001] This invention relates to the field of stress testing technology, and specifically to a testing device for testing the stress on aluminum-zinc alloy templates. Background Technology

[0002] Aluminum alloys are common alloy materials with many advantages, such as being lightweight, and are widely used in engineering fields. Aluminum-zinc alloy is one such alloy. To ensure the safety and reliability of aluminum alloy products during use, it is necessary to test their stress conditions. For example, patent CN118464592B discloses a test bench for testing the stress conditions of aluminum-zinc alloy templates. In this device, two retractable protective structures are set on both sides of the aluminum-zinc alloy template workpiece, and they move synchronously with the traction clamping device to retract or release, thus avoiding the problem of workpiece breakage and splashing that could injure test personnel.

[0003] However, while the device can effectively protect both sides of the aluminum-zinc alloy template, it has obvious blind spots, with the top of the template completely uncovered. This means that when the aluminum-zinc alloy template breaks during stress testing, the fragments generated by the breakage may still fly upwards or to the side, especially at the broken ends of the template, thus posing a safety threat to on-site testing personnel and failing to fundamentally eliminate the hidden danger of splashing and injuring people.

[0004] Secondly, before the formal stress test begins, the clamping process of the aluminum-zinc alloy templates to be tested still needs to be completed manually due to the varying widths of the templates. This traditional manual clamping method not only requires staff to manually adjust the clamping position and gradually apply clamping force to ensure stability, making the entire process time-consuming; moreover, in batch testing scenarios, the time cost of the clamping process accumulates continuously, significantly impacting the overall testing cycle of the aluminum-zinc alloy templates. This directly leads to a significant reduction in the efficiency of the testing process, making it difficult to meet the actual needs of efficient testing. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, the technical problem to be solved by the present invention is that when the aluminum-zinc alloy template is subjected to stress test using the existing test device, the aluminum-zinc alloy template may break and sputter, causing injury to the test personnel, especially at the two ends of the template that break off; and because the width of the aluminum-zinc alloy template to be tested is different, it is necessary to use the traditional manual clamping method, which takes a long time and greatly reduces the work efficiency of the test.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a testing device for testing the stress condition of aluminum-zinc alloy templates, comprising: On the horizontal surface of the test bench, the direction of force on the aluminum-zinc alloy template is the first direction, and the direction perpendicular to the direction of force is the second direction. The force testing mechanism includes: a base plate, clamping members, suction cups, telescopic members, and a first connecting plate; two base plates are slidably mounted on the test platform along a first direction; and two clamping members are slidably mounted opposite each other on each base plate along a second direction; suction cups are mounted on adjacent sides of the two clamping members; two telescopic members are arranged in a one-to-one correspondence with the two clamping members on the same base plate, and the two telescopic members are slidably mounted on the test platform along the second direction and located between the two base plates; both ends of the telescopic members are respectively connected to the corresponding clamping members on the two base plates through the first connecting plate; one end of the first connecting plate is hinged to the telescopic member, and the other end of the first connecting plate is hinged to the clamping member; so as to split the thrust of the telescopic member into components in the first and second directions; An arc-shaped protective cover, rotatably mounted on the test bench, allows the arc-shaped protective cover to rotate to above or below the test bench; and The pre-clamping mechanism controls the two clamping members to move in opposite directions when the arc-shaped protective cover rotates from below the test platform to above the test platform, so as to pre-clamp the aluminum-zinc alloy template according to the thickness of the aluminum-zinc alloy template.

[0007] Preferably, the pre-clamping mechanism includes: a counter-drive assembly and a transmission assembly; the counter-drive assembly includes: a first spline shaft, a lead screw, a nut seat, and a spring; the first spline shaft is rotatably mounted on the test bench along the sliding direction of the clamping member; two lead screws are coaxially sleeved on the first spline shaft, and the threads on the two lead screws have opposite directions; each lead screw is equipped with a nut seat, and the nut seat is correspondingly arranged with the clamping member, and the nut seat is fixedly mounted on the corresponding clamping member; the spring is installed between the two lead screws, and one end of the spring is installed on the corresponding lead screw to apply a mutual pulling force to the two lead screws; the rotation of the arc-shaped protective cover drives the first spline shaft to rotate through the transmission assembly.

[0008] Preferably, the transmission assembly includes: an internal gear ring, a second splined shaft, a transmission gear, a first bevel gear, and a second bevel gear; the internal gear ring is coaxially fixed to the arc-shaped protective cover; the second splined shaft is rotatably mounted on the test bench; the transmission gear is coaxially fixed to the second splined shaft and meshes with the internal gear ring; the first bevel gear is rotatably mounted on the base plate and is coaxially slidably inserted with the second splined shaft; the second bevel gear is rotatably mounted on the test bench and meshes with the first bevel gear; the second bevel gear drives the first splined shaft to rotate.

[0009] Preferably, the axis of the second bevel gear is parallel to the axis of the first spline shaft, and the second bevel gear drives the first spline shaft to rotate synchronously via belt drive.

[0010] Preferably, the clamping member is equipped with an anti-slip pad.

[0011] Preferably, it also includes an air extraction mechanism; the air extraction mechanism is connected to the suction cup.

[0012] Preferably, the suction mechanism includes: a piston, a pulling member, and a second connecting plate; the clamping member has a suction hole communicating with the suction cup along the second direction; one end of the piston is slidably installed in the suction hole, the other end of the piston is hinged to one end of the second connecting plate, the other end of the second connecting plate is hinged to one end of the telescopic member, and the second connecting plate and the first connecting plate are arranged in a one-to-one correspondence to form a V-shape.

[0013] Preferably, the system further includes an adjustment mechanism comprising: a slider and a bidirectional screw; two sliders are slidably mounted on the test bench along a second direction, and two telescopic members are located between the two sliders to limit the maximum travel of the telescopic members; the bidirectional screw is rotatably mounted on the test bench, and the two sliders are threadedly connected to both ends of the bidirectional screw.

[0014] Preferably, the arc-shaped protective cover is transparent.

[0015] Compared with the prior art, the present invention has at least the following advantages: 1. In this invention, firstly, the rotational linkage pre-clamping mechanism of the arc-shaped protective cover enables simultaneous completion of protection and pre-fixation, simplifying the operation process while improving test safety; secondly, the force of the telescopic component is decomposed into clamping force and tensile force by the first connecting plate, and both change synchronously with the thrust of the telescopic component, ensuring stable clamping of the template during force testing and avoiding slippage that could affect data accuracy; thirdly, the combination of suction cups and adaptive clamping design can adapt to templates of different widths and maintain fixation after template breakage, further reducing safety risks; fourthly, no manual intervention is required in the clamping process, and the tensile force is adaptively adjusted according to the template width, improving the automation level of the testing device and its adaptability to different specifications of aluminum-zinc alloy templates.

[0016] 2. In this invention, the telescopic component is controlled to extend, and the second connecting plate moves synchronously with the telescopic component, pulling the piston to slide outward within the suction hole. The piston's sliding creates a negative pressure inside the suction hole, thereby drawing out the air between the suction cup and the aluminum-zinc alloy template contact surface, causing the suction cup to adhere tightly to the template surface. The greater the thrust of the telescopic component, the farther the piston is pulled, the stronger the negative pressure inside the suction hole, and the greater the suction force of the suction cup. After the test, the telescopic component resets, and the second connecting plate pushes the piston to slide into the suction hole, releasing the negative pressure and causing the suction cup to detach from the template surface. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a perspective view of a testing device for testing the stress on an aluminum-zinc alloy template, as provided in an embodiment of the present invention.

[0019] Figure 2 This is a front view of a testing device for testing the stress on an aluminum-zinc alloy template, as provided in an embodiment of the present invention.

[0020] Figure 3 This is a side view of a testing device for testing the stress on an aluminum-zinc alloy template, as provided in an embodiment of the present invention.

[0021] Figure 4 This is a perspective view of the opposing drive assembly and transmission assembly provided in an embodiment of the present invention.

[0022] Figure 5 This is a perspective view of the air extraction mechanism provided in an embodiment of the present invention.

[0023] Reference numerals: 1. Test bench; 2. Force testing mechanism; 21. Base plate; 22. Clamping component; 23. Suction cup; 24. Telescopic component; 25. First connecting plate; 3. Arc-shaped protective cover; 4. Pre-clamping mechanism; 41. First splined shaft; 42. Lead screw; 43. Nut seat; 44. Spring; 45. Internal gear ring; 46. Second splined shaft; 47. Transmission gear; 48. First bevel gear; 49. Second bevel gear; 5. Air extraction mechanism; 51. Piston; 52. Pulling component; 53. Second connecting plate; 6. Adjustment mechanism; 61. Slider; 62. Bidirectional screw. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] See Figures 1-5 The present invention provides an embodiment of a testing device for testing the stress condition of an aluminum-zinc alloy template, comprising: a testing platform 1, a stress testing mechanism 2, an arc-shaped protective cover 3, and a pre-clamping mechanism 4; on the horizontal surface of the testing platform 1, the stress direction of the aluminum-zinc alloy template is a first direction, and the direction perpendicular to the stress direction is a second direction; the stress testing mechanism 2 comprises: a base plate 21, clamping members 22, suction cups 23, telescopic members 24, and a first connecting plate 25; two base plates 21 are slidably mounted on the testing platform 1 along the first direction; and two clamping members 22 are slidably mounted opposite each other on each base plate 21 along the second direction; suction cups 23 are installed on the adjacent side of each of the two clamping members 22; two telescopic members 24 are arranged one-to-one with the two clamping members 22 on the same base plate 21, and the two telescopic members... The telescopic member 24 is slidably installed on the test bench 1 along the second direction and located between the two base plates 21; both ends of the telescopic member 24 are respectively connected to the corresponding clamping members 22 on the two base plates 21 through the first connecting plate 25; one end of the first connecting plate 25 is hinged to the telescopic member 24, and the other end of the first connecting plate 25 is hinged to the clamping member 22; so as to split the thrust of the telescopic member 24 into components in the first and second directions; the arc-shaped protective cover 3 is rotatably installed on the test bench 1 so that the arc-shaped protective cover 3 rotates to the top or bottom of the test bench 1; when the arc-shaped protective cover 3 rotates from the bottom of the test bench 1 to the top of the test bench 1, the arc-shaped protective cover 3 controls the two clamping members 22 to move in opposite directions through the pre-clamping mechanism 4 so as to pre-clamp the aluminum-zinc alloy template according to the thickness of the aluminum-zinc alloy template.

[0026] In practice, the arc-shaped protective cover 3 is first rotated to the bottom of the test platform 1 and the aluminum-zinc alloy template is placed there. The arc-shaped protective cover 3 is then rotated to the top of the test platform 1, which not only provides multi-directional protection for the aluminum-zinc alloy template and prevents the template from breaking and flying off, but also drives the two clamping parts 22 on the same base plate 21 to move in opposite directions through the pre-clamping mechanism 4, so that the suction cup 23 contacts the two sides of the template to complete the pre-clamping. During testing, the telescopic component 24 is controlled to move, and both ends of the telescopic component 24 apply a pushing force to the first connecting plate 25. It first slides away from the test center along the second direction. When it slides to the maximum position, the force is transmitted to the clamping component 22 through the first connecting plate 25. Since the two ends of the first connecting plate 25 are hinged to the telescopic component 24 and the clamping component 22 respectively, the pushing force of the telescopic component 24 is split into components along the second direction and the first direction. The component in the second direction causes the two clamping components 22 to move in opposite directions to further clamp the template, while the component in the first direction drives the two base plates 21 to slide relative to each other along the first direction. Then, the clamping component 22 applies a tensile force along the first direction to the template to complete the template stress test.

[0027] The process requires no manual clamping and can adaptively clamp according to the width of the aluminum-zinc alloy template. The suction cup 23 can keep the broken ends fixed to the clamping member 22 after the template breaks, reducing safety threats. The greater the thrust, the greater the clamping force on the template, which can effectively prevent the end of the part to be tested from falling off the clamping member 22. Moreover, when the extension stroke of the telescopic member 24 is fixed, the greater the template width, the greater the tensile force and clamping force it receives, so that the device can adaptively adjust the tensile force according to the template width.

[0028] Furthermore, an anti-slip pad is installed on the clamping member 22. The anti-slip pad effectively prevents relative sliding between the clamping member 22 and the part to be tested, increasing the friction between them; specifically, the anti-slip pad can be made of rubber.

[0029] See Figures 1-5 In other embodiments, the pre-clamping mechanism 4 includes: a counter-drive assembly and a transmission assembly; the counter-drive assembly includes: a first spline shaft 41, a lead screw 42, a nut seat 43, and a spring 44; the first spline shaft 41 is rotatably mounted on the test bench 1 along the sliding direction of the clamping member 22; two lead screws 42 are coaxially sleeved on the first spline shaft 41, and the threads on the two lead screws 42 are in opposite directions; each lead screw 42 is equipped with a nut seat 43, and the nut seat 43 is correspondingly set with the clamping member 22, and the nut seat 43 is fixedly mounted on the corresponding clamping member 22; the spring 44 is installed between the two lead screws 42, and one end of the spring 44 is installed on the corresponding lead screw 42 to apply a mutual pulling force to the two lead screws 42; the rotation of the arc-shaped protective cover 3 drives the first spline shaft 41 to rotate through the transmission assembly.

[0030] In specific implementation, rotating the arc-shaped protective cover 3 drives the first spline shaft 41 to rotate via the transmission assembly. The first spline shaft 41 drives the two lead screws 42 to rotate, and the lead screws 42 drive the nut seat 43 to move. The nut seat 43 then drives the two clamping parts 22 to move in opposite directions, achieving pre-clamping of the template. This ensures that there is a certain friction between the two clamping parts 22 and the template, preventing relative sliding between the clamping parts 22 and the template when the drive unit is in operation. Simultaneously, it achieves the adsorption of the suction cup 23. Furthermore, the spring 44 ensures that the nut seat 43 remains in contact with the template when the clamping parts 22 are not in contact with the template. 3. It will not move outward to ensure that the clamping member 22 abuts against the template; and after the clamping member 22 abuts against the template, when the first spline shaft 41 continues to rotate, the nut seat 43 does not move, and the lead screw 42 will move outward on the first spline shaft 41 against the elastic force of the spring 44. In this way, templates of different thicknesses can be clamped; and after the template is pre-clamped by the two clamping members 22, the telescopic member 24 is controlled to move. One component of the force pushes the clamping member 22 toward the template, so that the lead screw 42 can move in the length direction of the first spline shaft 41 to clamp the template.

[0031] See Figures 1-5 In other embodiments, the transmission assembly includes: an internal gear ring 45, a second splined shaft 46, a transmission gear 47, a first bevel gear 48, and a second bevel gear 49; the internal gear ring 45 is coaxially fixed with the arc-shaped protective cover 3; the second splined shaft 46 is rotatably mounted on the test bench 1; the transmission gear 47 is coaxially fixed with the second splined shaft 46, and the transmission gear 47 meshes with the internal gear ring 45; the first bevel gear 48 is rotatably mounted on the base plate 21, and the first bevel gear 48 is coaxially slidably inserted with the second splined shaft 46; the second bevel gear 49 is rotatably mounted on the test bench 1, and the second bevel gear 49 meshes with the first bevel gear 48; the second bevel gear 49 drives the first splined shaft 41 to rotate.

[0032] In practice, the arc-shaped protective cover 3 is rotated from below the test platform 1 to above it, gradually covering the force testing mechanism 2 and the aluminum-zinc alloy template to be tested. During this process, the arc-shaped protective cover 3 drives the coaxially fixed internal gear ring 45 to rotate synchronously. The internal gear ring 45 meshes with the transmission gear 47, thereby driving the transmission gear 47 to rotate. The transmission gear 47 is coaxially fixed with the second spline shaft 46, so the second spline shaft 46 rotates together with the transmission gear 47, and drives the first bevel gear 48, which is slidably inserted with it, to rotate synchronously. The first bevel gear 48 meshes with the second bevel gear 49, driving the second bevel gear 49 to rotate. Finally, the second bevel gear 49 drives the first spline shaft 41 to rotate, realizing the power transmission of the pre-clamping mechanism 4 and completing the pre-clamping action of the template.

[0033] See Figures 1-5In other embodiments, the axis of the second bevel gear 49 is parallel to the axis of the first spline shaft 41, and the second bevel gear 49 drives the first spline shaft 41 to rotate synchronously via belt drive. Specifically, two pulleys are coaxially fixed on the second bevel gear 49 and the first spline shaft 41, respectively, and are connected by flat belts. The belt drive enables the bevel gear to drive the first spline shaft 41 to rotate. Furthermore, the second bevel gear 49 can also drive the first spline shaft 41 to rotate via a sprocket and chain.

[0034] See Figures 1-5 In other embodiments, an air extraction mechanism 5 is also included; the air extraction mechanism 5 is connected to the suction cup 23. When the air extraction mechanism 5 is activated, it extracts air from inside the suction cup 23, expelling the air between the suction cup 23 and the template contact surface, creating a negative pressure environment, so that the suction cup 23 is tightly adsorbed on the template surface, enhancing the pre-clamping effect; during the formal testing phase, the air extraction mechanism 5 continuously maintains the negative pressure inside the suction cup 23 to ensure that the suction cup 23 can always stably adsorb when the template is subjected to tensile force in the first direction, avoiding relative sliding between the template and the clamping member 22; even if the aluminum-zinc alloy template breaks during the test, the negative pressure maintained by the air extraction mechanism 5 can still fix the two ends of the broken template to the clamping member 22 through the suction cup 23, preventing the broken fragments from flying; after the test, the air extraction mechanism 5 stops extracting air and can release pressure, so that the suction cup 23 is detached from the template surface, making it easy to remove the template.

[0035] See Figures 1-5 In other embodiments, the suction mechanism 5 includes: a piston 51, a pulling member 52, and a second connecting plate 53; the clamping member 22 has a suction hole communicating with the suction cup 23 along the second direction; one end of the piston 51 is slidably installed in the suction hole, the other end of the piston 51 is hinged to one end of the second connecting plate 53, the other end of the second connecting plate 53 is hinged to one end of the telescopic member 24, and the second connecting plate 53 and the first connecting plate 25 are arranged in a one-to-one correspondence to form a V-shaped shape.

[0036] In practice, the telescopic component 24 is extended, and the second connecting plate 53 moves synchronously with the telescopic component 24, pulling the piston 51 to slide outward in the suction hole. The sliding of the piston 51 creates a negative pressure inside the suction hole, which then draws out the air between the suction cup 23 and the aluminum-zinc alloy template contact surface, causing the suction cup 23 to adhere tightly to the template surface. The greater the thrust of the telescopic component 24, the farther the piston 51 is pulled, the stronger the negative pressure inside the suction hole, and the greater the suction force of the suction cup 23. After the test, the telescopic component 24 is reset, and the second connecting plate 53 pushes the piston 51 to slide into the suction hole, releasing the negative pressure, and the suction cup 23 detaches from the template surface.

[0037] See Figures 1-5In other embodiments, an adjustment mechanism 6 is also included, which includes a slider 61 and a bidirectional screw 62; two sliders 61 are slidably mounted on the test bench 1 along a second direction, and two telescopic members 24 are located between the two sliders 61 to limit the maximum travel of the telescopic members 24; the bidirectional screw 62 is rotatably mounted on the test bench 1, and the two sliders 61 are threadedly connected to both ends of the bidirectional screw 62.

[0038] When the bidirectional screw 62 is rotated, the two sliders 61 slide synchronously in opposite directions or in the opposite direction under the action of the reverse screw, changing the distance between the two sliders 61, thereby limiting the maximum stroke of the telescopic member 24 located between them in the second direction; the smaller the distance between the sliders 61, the shorter the maximum stroke of the telescopic member 24; the larger the distance between the sliders 61, the longer the maximum sliding stroke of the telescopic member 24.

[0039] When testing aluminum-zinc alloy templates of different widths, the distance between the two sliders 61 is first adjusted by rotating the bidirectional screw 62: for narrower templates, the distance between the sliders 61 is increased to increase the maximum stroke of the telescopic component 24 and avoid overstretching; for wider templates, the distance between the sliders 61 is decreased to shorten the maximum stroke of the telescopic component 24 and ensure sufficient tensile force is provided. After adjustment, the telescopic component 24 reaches its maximum stroke when it slides into contact with the slider 61. At this point, the force is distributed through the connecting plate and applied to the template.

[0040] See Figures 1-5 In another embodiment, the arc-shaped protective cover 3 is transparent, thus allowing for convenient and timely observation of the aluminum-zinc alloy template during testing. Furthermore, a glass window can also be directly provided on the arc-shaped protective cover 3.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A testing device for testing the stress condition of aluminum-zinc alloy templates, characterized in that, include: On the horizontal surface of the test bench, the direction of force on the aluminum-zinc alloy template is the first direction, and the direction perpendicular to the direction of force is the second direction. The force testing mechanism includes: a base plate, clamping members, suction cups, telescopic members, and a first connecting plate; two base plates are slidably mounted on the test platform along a first direction; and two clamping members are slidably mounted opposite each other on each base plate along a second direction; suction cups are mounted on adjacent sides of the two clamping members; two telescopic members are arranged in a one-to-one correspondence with the two clamping members on the same base plate, and the two telescopic members are slidably mounted on the test platform along the second direction and located between the two base plates; both ends of the telescopic members are respectively connected to the corresponding clamping members on the two base plates through the first connecting plate; one end of the first connecting plate is hinged to the telescopic member, and the other end of the first connecting plate is hinged to the clamping member; so as to split the thrust of the telescopic member into components in the first and second directions; An arc-shaped protective cover, rotatably mounted on the test bench, allows the arc-shaped protective cover to rotate to above or below the test bench; and The pre-clamping mechanism controls the two clamping members to move in opposite directions when the arc-shaped protective cover rotates from below the test platform to above the test platform, so as to pre-clamp the aluminum-zinc alloy template according to the thickness of the aluminum-zinc alloy template.

2. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 1, characterized in that, The pre-clamping mechanism includes: a counter-drive assembly and a transmission assembly; the counter-drive assembly includes: a first spline shaft, a lead screw, a nut seat, and a spring; the first spline shaft is rotatably mounted on the test bench along the sliding direction of the clamping member; two lead screws are coaxially sleeved on the first spline shaft, and the threads on the two lead screws have opposite directions; each lead screw is equipped with a nut seat, and the nut seat is correspondingly set with the clamping member, and the nut seat is fixedly mounted on the corresponding clamping member; the spring is installed between the two lead screws, and one end of the spring is installed on the corresponding lead screw to apply a mutual pulling force to the two lead screws; the rotation of the arc-shaped protective cover drives the first spline shaft to rotate through the transmission assembly.

3. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 2, characterized in that, The transmission assembly includes: an internal gear ring, a second splined shaft, a transmission gear, a first bevel gear, and a second bevel gear; the internal gear ring is coaxially fixed to the arc-shaped protective cover; the second splined shaft is rotatably mounted on the test bench; the transmission gear is coaxially fixed to the second splined shaft and meshes with the internal gear ring; the first bevel gear is rotatably mounted on the base plate and is coaxially and slidably inserted with the second splined shaft; the second bevel gear is rotatably mounted on the test bench and meshes with the first bevel gear; the second bevel gear drives the first splined shaft to rotate.

4. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 3, characterized in that, The axis of the second bevel gear is parallel to the axis of the first spline shaft, and the second bevel gear drives the first spline shaft to rotate synchronously via belt drive.

5. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 1, characterized in that, The clamping component is equipped with an anti-slip pad.

6. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 1, characterized in that, It also includes an air extraction mechanism; the air extraction mechanism is connected to the suction cup.

7. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 6, characterized in that, The suction mechanism includes a piston, a pulling member, and a second connecting plate; the clamping member has a suction hole communicating with the suction cup along the second direction; one end of the piston is slidably installed in the suction hole, the other end of the piston is hinged to one end of the second connecting plate, the other end of the second connecting plate is hinged to one end of the telescopic member, and the second connecting plate and the first connecting plate are arranged in a one-to-one correspondence to form a V-shape.

8. The testing device for testing the stress condition of an aluminum-zinc alloy template according to claim 7, characterized in that, It also includes an adjustment mechanism, which comprises: a slider and a bidirectional screw; two sliders are slidably mounted on the test bench in a second direction, and two telescopic members are located between the two sliders to limit the maximum travel of the telescopic members; the bidirectional screw is rotatably mounted on the test bench, and the two sliders are threadedly connected to both ends of the bidirectional screw.

9. The testing device for testing the stress condition of aluminum-zinc alloy templates according to claim 1, characterized in that, The arc-shaped protective cover is transparent.

Images