Twist detection device

Abstract

The utility model provides a kind of distortion detection device, distortion detection device includes connecting body first card seat, second card seat and detection structure.The first card seat is rotatably connected with one end of connecting body, and is used to be clamped with laminated frame.The second card seat is rotatably connected with the other end of connecting body around at least two intersecting directions, and is used to be clamped with laminated frame.Detection structure is arranged on at least one of connecting body, first card seat and second card seat;Detection structure is used to detect the relative position between connecting body and first card seat, and the relative position between connecting body and second card seat, to judge whether laminated frame is distorted.The distortion detection device in the application reduces the labor intensity of personnel detection, and the slight distortion deformation on laminated frame can also be converted into the relative positional relationship between first card seat, connecting body and second card seat to facilitate identification, improve the detection efficiency and accuracy of laminated frame distortion deformation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic modules, and in particular to a torsion detection device. Background Technology

[0002] In the verification and production processes before photovoltaic (PV) module manufacturing, to achieve better performance, mechanical strength, and lifespan, the laminator undergoes processes such as heating, vacuuming, pressurizing, gas filling, and cooling. When the laminator's heating temperature reaches the decomposition temperature of the crosslinking agent, the peroxide bonds in the crosslinking agent break to form peroxide free radicals RO-, which readily combine with the H groups on the alkyl groups of EVA branches. The combination of these two alkyl active groups forms crosslinked EVA, which crosslinks the glass, solar cells, and backsheet glass together. Bubbles are generated during EVA hot melting, and the relatively large thickness and rigidity of the backsheet glass of PV modules pose challenges to the lamination process. Over-pressurization during lamination and the recovery of glass bending stress after cooling make PV modules prone to bubble formation. To address this issue, lamination fixtures are needed to reduce the pressure on the PV modules. However, due to equipment straightening and squeezing during material handling or use, lamination frames often become twisted and deformed. These twisted and deformed frames can lead to problems such as PV module explosions or parallel / series issues. Current technology relies on personnel visually inspecting the lamination frames for twisting and deformation. Therefore, the existing methods for detecting laminate frame distortion are prone to causing eye fatigue, and the corresponding minute distortions cannot be detected by the naked eye, resulting in low detection efficiency and low accuracy. Utility Model Content

[0003] Therefore, it is necessary to provide a torsion detection device to address the problems of existing methods for detecting laminated frame torsion, which easily lead to eye fatigue and cannot detect minute torsion deformations by the naked eye, resulting in low detection efficiency and low accuracy.

[0004] The technical solution is as follows:

[0005] On the one hand, a torsion detection device is provided, comprising:

[0006] Connect the main body;

[0007] The first card holder is rotatably connected to one end of the connecting body about at least two intersecting directions and is used to engage with the laminate frame;

[0008] The second card holder is rotatably connected to the other end of the connecting body about at least two intersecting directions and is used to engage with the laminate frame;

[0009] The distortion detection device further includes a detection structure disposed on at least one of the connecting body, the first card holder, and the second card holder; the detection structure is used to detect the relative positions between the connecting body and the first card holder, and between the connecting body and the second card holder, in order to determine whether the laminate frame is distorted.

[0010] The technical solution will be further explained below:

[0011] In one embodiment, the first card holder is provided with a first card slot for engaging with the laminated frame, and the second card holder is provided with a second card slot for engaging with the laminated frame. The detection structure includes a first detection surface located on the outer side wall of the first card holder, a second detection surface located on the outer side wall of the second card holder, and a third detection surface located on the outer side wall of the connecting body. When the groove depth direction of the first card slot, the axial direction of the connecting body, and the groove depth direction of the second card slot are parallel, the first detection surface, the second detection surface, and the third detection surface are coplanar.

[0012] Thus, when using the torsion detection device, it is tilted and placed inside the laminate frame to be tested. After one of the first and second mounting brackets initially engages with a long side of the laminate frame, the torsion detection device is rotated, causing the first and second mounting brackets to engage and adhere with the two long sides of the laminate frame respectively. If the first, second, and third detection surfaces are coplanar, it indicates that the location of the torsion detection device on the laminate frame is not tortuous. If the first, second, and third detection surfaces are not coplanar, it indicates that the location of the torsion detection device on the laminate frame is tortuous. Adjusting the installation position of the torsion detection device on the laminate frame allows for multi-point detection to determine whether the entire laminate frame is tortuous. Compared to the prior art's reliance on visual observation, the torsion detection device in this application reduces the labor intensity of manual inspection, and minor torsion deformations on the laminate frame can be converted into relative positional relationships between the first, second, and third detection surfaces for easy identification, improving the detection efficiency and accuracy of laminate frame torsion deformation.

[0013] In one embodiment, the detection structure includes a first marking component and a second marking component. The first marking component is mounted on one of the first card holder and the connection body and is used to mark the relative position between the first card holder and the connection body. The second marking component is mounted on one of the second card holder and the connection body and is used to mark the relative position between the second card holder and the connection body.

[0014] Thus, when using the torsion detection device, it is tilted and placed inside the undeformed laminate frame. After one of the first and second card holders is initially engaged with one of the long sides of the laminate frame, the torsion detection device is rotated so that the first and second card holders are respectively engaged and fitted with the two long sides of the laminate frame. The relative position between the first card holder and the connecting body is recorded by the first marking component and set as the first theoretical position. The relative position between the second card holder and the connecting body is recorded by the second marking component and set as the second theoretical position. When a laminate frame needs to be inspected, the torsion detection device is installed in the laminate frame according to the above steps. The relative positions between the first card holder and the connecting body are recorded using the first marking component and set as the first detection position. The relative positions between the second card holder and the connecting body are recorded using the second marking component and set as the second detection position. If the first detection position is the same as the first theoretical position, and the second detection position is the same as the second theoretical position, it indicates that the location of the laminate frame where the torsion detection device is installed has not undergone torsion deformation. If the first detection position is different from the first theoretical position, and / or the second detection position is different from the second theoretical position, it indicates that the location of the laminate frame where the torsion detection device is installed has undergone torsion deformation. The installation position of the torsion detection device on the laminate frame is adjusted to determine whether the entire laminate frame has undergone torsion deformation through multi-point detection. Compared with the prior art's method of visual observation, the torsion detection device in this application reduces the labor intensity of personnel inspection, and the minute torsion deformation on the laminate frame can be converted into the relative positional relationship between the first card holder, the connecting body, and the second card holder for easy identification, improving the detection efficiency and accuracy of laminate frame torsion deformation.

[0015] In one embodiment, both the first marking component and the second marking component include at least one marking element, one end of each marking element being fixed to both ends of the connecting body, and the other end of each marking element extending along the axial direction of the connecting body and toward the first card holder or the second card holder.

[0016] In one embodiment, at least one scale mark is provided on the outer side wall of the marker, and each of the scale marks is spaced apart along the extending direction of the marker;

[0017] And / or, both the first marking component and the second marking component include four of the marking elements, and the eight marking elements are respectively disposed at the four corners of both ends of the connecting body.

[0018] In one embodiment, both the first card holder facing the connecting body and the second card holder facing the connecting body are provided with at least one clearance hole. The end of each of the markers away from the connecting body extends into each of the clearance holes and is spaced apart from the inner wall of each clearance hole.

[0019] In one embodiment, the inner diameter of the clearance hole is 1.2 to 1.5 times the outer diameter of the marker.

[0020] In one embodiment, a torsion ball is provided on one side of the first card holder and the connecting body that are close to each other, and a spherical groove that rotates with the torsion ball is provided on the other side.

[0021] And / or, a torsion ball is provided on one side of the second card holder and the connecting body that are close to each other, and a spherical groove that rotates with the torsion ball is provided on the other side.

[0022] In one embodiment, the torsion detection device further includes at least one rolling element, each of which is filled between the inner wall of the torsion ball and the spherical groove.

[0023] In one embodiment, the connecting body includes a first connecting segment and a second connecting segment. One end of the first connecting segment is rotatably connected to the first card holder about at least two intersecting directions, and the other end is movablely connected to one end of the second connecting segment along the axial direction of the second connecting segment. The other end of the second connecting segment is rotatably connected to the second card holder about at least two intersecting directions. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a torsion detection device installed on a laminated frame, according to one embodiment.

[0027] Figure 2 for Figure 1 A schematic diagram of the torsion detection device in the diagram.

[0028] Figure 3 for Figure 2 The diagram shows the structure of the connecting body, the first marker component, and the second marker component.

[0029] Figure 4 for Figure 2 A schematic diagram of the structure of the first card slot.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Torsion detection device; 100. Connecting body; 110. Torsion ball; 120. Third detection surface; 200. First card holder; 210. First card slot; 220. Clearance hole; 230. Spherical groove; 240. Joint buckle; 250. First detection surface; 300. Second card holder; 310. Second card slot; 320. Second detection surface; 400. First marking assembly; 410. Marking element; 500. Second marking assembly; 20. Laminated frame; 30. Restraint strap; 40. Pressure dividing oblique strap. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] During the manufacturing process of photovoltaic modules, a lamination frame 20 is typically used to reduce the stress on the photovoltaic modules. The lamination frame 20 can be made of materials such as stainless steel, aluminum alloy, or composite materials. The lamination frame 20 can be a hollow structure or a solid structure. The dimensions of the lamination frame 20 can be adjusted or determined according to the dimensions of the solar cells used in the photovoltaic module. Specifically, in this embodiment, the overall length of the lamination frame 20 can be set to 2200mm to 2600mm, and the overall width of the lamination frame 20 can be set to 1100mm to 1500mm. The lamination frame 20 includes a frame body, the width of which can be set to 20mm to 25mm, and the thickness of which can be set to 5mm to 7mm.

[0034] like Figure 1 As shown, optionally, the laminating frame 20 is provided with at least one binding strap 30, each binding strap 30 extending along the width direction of the laminating frame 20 and spaced apart along the length direction of the laminating frame 20, to pull on opposite long sides of the laminating frame 20. The laminating frame 20 is also provided with four pressure-distributing diagonal straps 40, which are respectively installed at the four corners of the laminating frame 20.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, a torsion detection device 10 is provided for detecting whether a laminated frame 20 has undergone torsion deformation. The torsion detection device 10 includes a connecting body 100, a first retainer 200, and a second retainer 300. The first retainer 200 is rotatably connected to one end of the connecting body 100 about at least two intersecting directions and is used to engage with the laminated frame 20. The second retainer 300 is rotatably connected to the other end of the connecting body 100 about at least two intersecting directions and is used to engage with the laminated frame 20. The torsion detection device 10 also includes a detection structure disposed on at least one of the connecting body 100, the first retainer 200, and the second retainer 300. The detection structure is used to detect the relative positions between the connecting body 100 and the first retainer 200, and between the connecting body 100 and the second retainer 300, to determine whether the laminated frame 20 is torsion.

[0036] The twisted structure can be any structure in the prior art that can detect the relative position between the connecting body 100 and the first card holder 200, and between the connecting body 100 and the second card holder 300.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the detection structure includes a first marking component 400 and a second marking component 500. The first marking component 400 is mounted on one of the first card holder 200 and the connecting body 100, and is used to mark the relative position between the first card holder 200 and the connecting body 100. The second marking component 500 is mounted on one of the second card holder 300 and the connecting body 100, and is used to mark the relative position between the second card holder 300 and the connecting body 100.

[0038] In the above embodiment, the torsion detection device 10 is used by tilting it into the undeformed laminate frame 20, and then initially engaging one of the first card holder 200 and the second card holder 300 with one of the long sides of the laminate frame 20. Then, the torsion detection device 10 is rotated so that the first card holder 200 and the second card holder 300 are respectively engaged and attached to the two long sides of the laminate frame 20. The relative position between the first card holder 200 and the connecting body 100 is recorded by the first marking component 400 and set as the first theoretical position. The relative position between the second card holder 300 and the connecting body 100 is recorded by the second marking component 500 and set as the second theoretical position. When the laminate frame 20 to be tested needs to be tested, after installing the torsion detection device 10 in the laminate frame 20 according to the above steps, the relative position between the first card holder 200 and the connecting body 100 is recorded by the first marking component 400 and set as the first detection position. The relative position between the second card holder 300 and the connecting body 100 is recorded by the second marking component 500 and set as the second detection position. If the first detection position is the same as the first theoretical position and the second detection position is the same as the second theoretical position, it means that the position of the laminate frame 20 where the torsion detection device 10 is installed has not been tortuous or deformed. If the first detection position is different from the first theoretical position and / or the second detection position is different from the second theoretical position, it means that the position of the laminate frame 20 where the torsion detection device 10 is installed has been tortuous or deformed. The installation position of the torsion detection device 10 on the laminate frame 20 to be tested is adjusted so as to determine whether the entire laminate frame 20 has been tortuous or deformed by multi-point detection. Compared with the existing technology that relies on human visual observation, the torsion detection device 10 in this application reduces the labor intensity of human inspection, and the minute torsion deformation on the laminate frame 20 can also be converted into the relative positional relationship between the first card holder 200, the connecting body 100 and the second card holder 300 for easy identification, thereby improving the detection efficiency and accuracy of the torsion deformation of the laminate frame 20.

[0039] Specifically, in this embodiment, the connecting body 100, the first card holder 200, and the second card holder 300 can all be made of plastic and integrally molded by injection molding. In other embodiments, the connecting body 100, the first card holder 200, and the second card holder 300 can also be made of alloy or stainless steel and formed by welding or other methods.

[0040] It should be noted that the first card holder 200 is rotatably connected to one end of the connecting body 100 around at least two intersecting directions, allowing the first card holder 200 to flexibly rotate or swing in multiple intersecting directions during the engagement process with the laminating frame 20, ensuring that the first card holder 200 and the laminating frame 20 are engaged and fully fitted. The second card holder 300 is rotatably connected to the other end of the connecting body 100 around at least two intersecting directions, allowing the second card holder 300 to flexibly rotate or swing in multiple intersecting directions during the engagement process with the laminating frame 20, ensuring that the second card holder 300 and the laminating frame 20 are engaged and fully fitted.

[0041] Specifically, in this embodiment, the first card holder 200 has a first card slot 210 for engaging the laminated frame 20 on the side away from the connecting body 100. The second card holder 300 has a second card slot 310 for engaging the laminated frame 20 on the side away from the connecting body 100. The width of both the first card slot 210 and the second card slot 310 is adapted to the thickness of the frame body, that is, the width of both the first card slot 210 and the second card slot 310 is set to 5mm to 8mm. The height of both the first card slot 210 and the depth of both the second card slot 310 can be set to 20mm to 30mm.

[0042] like Figure 2 and Figure 3 As shown, the first marking component 400 and the second marking component 500 each include at least one marking element 410. One end of each marking element 410 is fixed to both ends of the connecting body 100, and the other end of each marking element 410 extends along the axial direction of the connecting body 100 and toward the first card holder 200 or the second card holder 300 respectively.

[0043] The marker 410 can be any structure in the prior art capable of marking the relative position between two objects. The number, shape, length, and installation position of the marker 410 can be flexibly adjusted according to actual usage needs.

[0044] Specifically, in this embodiment, the marker 410 is configured as an elongated cylinder. The marker 410 can be made of a material with high hardness and resistance to deformation, such as plastic, hard alloy, or ceramic. This ensures the long-term accuracy of the marker 410, prevents detection errors caused by wear during use, and improves the reliability of the torsion detection device 10.

[0045] Optionally, at least one scale mark is provided on the outer side wall of the marker 410, and the scale marks are spaced apart along the extension direction of the marker 410. In this way, the end face of the connecting body 100 can be selected as the reference surface, and the relative position between the first card holder 200 and the connecting body 100, or the relative position between the second card holder 300 and the connecting body 100, can be indirectly recorded by recording the scale marks on the marker 410 that correspond to the end face of the connecting body 100, thereby improving the practicality of the torsion detection device 10.

[0046] It should be noted that the positional accuracy of the scale markings on the marker 410 and the spacing accuracy between the two scale markings will affect the detection results of the torsion detection device 10.

[0047] like Figure 3 As shown, optionally, both the first marking component 400 and the second marking component 500 include four marking elements 410, and the eight marking elements 410 are respectively disposed at the four corners of the two ends of the connecting body 100. In this way, when the laminate frame 20 to be detected undergoes twisting deformation, the marking position of at least one of the eight marking elements 410 will change accordingly, thereby improving the detection accuracy of the twisting detection device 10.

[0048] like Figure 3 and Figure 4 As shown, optionally, both the first card holder 200 facing the connecting body 100 and the second card holder 300 facing the connecting body 100 are provided with at least one clearance hole 220. The end of each marker 410 away from the connecting body 100 extends into each clearance hole 220 and is spaced apart from the inner wall of each clearance hole 220. Thus, each marker 410 is located between the first card holder 200 and the connecting body 100, or between the second card holder 300 and the connecting body 100, reducing the probability of the marker 410 colliding with surrounding objects and improving the reliability of the torsion detection device 10.

[0049] In other embodiments, the marker 410 may also be located outside the first card holder 200 or outside the second card holder 300.

[0050] Specifically, in this embodiment, the inner diameter of the clearance hole 220 is 1.2 to 1.5 times the outer diameter of the marker 410. Thus, skewed gaps are reserved between the marker 410 and the first card holder 200, and between the marker 410 and the second card holder 300, ensuring that no interference occurs between the first card holder 200 and the marker 410, or between the second card holder 300 and the marker 410, during the engagement of the first card holder 200 with the laminating frame 20 and the second card holder 300 with the laminating frame 20, thereby improving the reliability of the torsion detection device 10.

[0051] like Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment, a torsion ball 110 is provided on one side of the first card holder 200 and the connecting body 100, which are close to each other, and a spherical groove 230 is provided on the other side to rotatably engage with the torsion ball 110. This ensures that the first card holder 200 can rotate in either direction during the engagement process with the laminating frame 20, thereby ensuring that the inner wall of the first card groove 210 can fit against the outer wall of the laminating frame 20, improving the reliability of the torsion detection device 10.

[0052] like Figure 2 , Figure 3 and Figure 4 As shown, optionally, a torsion ball 110 is provided on one side of the second card holder 300 and the connecting body 100 that are close to each other, and a spherical groove 230 that rotatably engages with the torsion ball 110 is provided on the other side. In this way, it is ensured that the second card holder 300 can rotate in either direction during the engagement process with the laminating frame 20, thereby ensuring that the inner wall of the second card groove 310 can fit against the outer wall of the laminating frame 20, and improving the reliability of the torsion detection device 10.

[0053] Specifically, in this embodiment, torsion balls 110 are provided on both end faces of the connecting body 100. The diameter of the torsion balls 110 can be set to 30mm ± 20mm. Along the axial direction of the connecting body 100, the torsion balls 110 and each marker 410 located at the same end of the connecting body 100 are staggered. The first card holder 200 and the second card holder 300 are both provided with joint buckles 240 on the side near the connecting body 100. Both joint buckles 240 are provided with spherical grooves 230 for rotatably connecting with the torsion balls 110.

[0054] Optionally, the torsion detection device 10 further includes at least one rolling element, each of which is filled between the torsion ball 110 and the inner wall of the spherical groove 230. In this way, the torsion ball 110 can roll against the inner wall of the spherical groove 230 through the rolling element, reducing friction and wear between the torsion ball 110 and the joint buckle 240, ensuring rotational flexibility between the first retaining seat 200 and the connecting body 100, and between the second retaining seat 300 and the connecting body 100, thereby improving the practicality of the torsion detection device 10.

[0055] The rolling element can be set as a ball, roller or other rolling structure.

[0056] In one embodiment, the connecting body 100 includes a first connecting segment and a second connecting segment. One end of the first connecting segment is rotatably connected to the first card holder 200 about at least two intersecting directions, and the other end is movablely connected to one end of the second connecting segment along the axis of the second connecting segment. The other end of the second connecting segment is rotatably connected to the second card holder 300 about at least two intersecting directions. Thus, the length of the connecting body 100 is adjustable, facilitating the installation of the torsion detection device 10 and enabling the torsion detection device 10 to be applicable to the torsion deformation detection of laminated frames 20 of different sizes.

[0057] The first connecting segment and the second connecting segment can be connected using any linear sliding method in the prior art. For example, the ends of the first connecting segment and the second connecting segment that are close to each other can be sleeved together and can move along the axial direction of the second connecting segment.

[0058] like Figure 1 and Figure 2 As shown, in one embodiment, the first card holder 200 is provided with a first card groove 210 for engaging with the laminating frame 20. The second card holder 300 is provided with a second card groove 310 for engaging with the laminating frame 20. The detection structure includes a first detection surface 250 located on the outer wall of the first card holder 200, a second detection surface 320 located on the outer wall of the second card holder 300, and a third detection surface 120 located on the outer wall of the connecting body 100. When the groove depth direction of the first card groove 210, the axial direction of the connecting body 100, and the groove depth direction of the second card groove 310 are parallel, the first detection surface 250, the second detection surface 320, and the third detection surface 120 are coplanar.

[0059] In the above embodiment, the torsion detection device 10 is used by tilting it inside the laminate frame 20 to be tested. One of the first mounting brackets 200 and the second mounting bracket 300 is initially engaged with a long side of the laminate frame 20. Then, the torsion detection device 10 is rotated, causing the first mounting bracket 200 and the second mounting bracket 300 to engage and adhere with the two long sides of the laminate frame 20, respectively. If the first detection surface 250, the second detection surface 320, and the third detection surface 120 are coplanar, it indicates that the position of the laminate frame 20 where the torsion detection device 10 is installed has not been tortuous or deformed. If the first detection surface 250, the second detection surface 320, and the third detection surface 120 are not coplanar, it indicates that the position of the laminate frame 20 where the torsion detection device 10 is installed has been tortuous or deformed. The installation position of the torsion detection device 10 on the laminate frame 20 to be tested is adjusted to determine whether the entire laminate frame 20 has been tortuous or deformed through multi-point detection. Compared with the existing technology that relies on human visual observation, the torsion detection device 10 in this application reduces the labor intensity of human inspection, and the minute torsion deformation on the laminate frame 20 can also be converted into the relative positional relationship between the first detection surface 250, the second detection surface 320 and the third detection surface 120 for easy identification, thereby improving the detection efficiency and accuracy of the torsion deformation of the laminate frame 20.

[0060] Optionally, the length and width of the cross-section of the connecting body 100, the length and width of the cross-section of the first card holder 200, and the length and width of the cross-section of the second card holder 300 can all be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the length and width of the cross-section of the connecting body 100, the length and width of the first card holder 200, and the length and width of the second card holder 300 can all be set to 7mm to 100mm. The axial length of the connecting body 100 can be set to 1100mm to 1500mm.

[0061] The number of first detection surfaces 250, second detection surfaces 320, and third detection surfaces 120 can be flexibly adjusted according to actual usage needs; that is, each of these numbers is at least one. Specifically, in this embodiment, there are four first detection surfaces 250, four second detection surfaces 320, and four third detection surfaces 120. The four first detection surfaces 250 are respectively disposed on the four sides of the outer wall of the first card holder 200. The four second detection surfaces 320 are respectively disposed on the four sides of the outer wall of the second card holder 300. The four third detection surfaces 120 are respectively disposed on the four sides of the outer wall of the connecting body 100.

[0062] like Figure 2As shown, specifically in this embodiment, the torsion detection device 10 further includes a first marking component 400 and a second marking component 500. The first marking component 400 is mounted on one of the first card holder 200 and the connecting body 100, and is used to mark the relative position between the first card holder 200 and the connecting body 100. The second marking component 500 is mounted on one of the second card holder 300 and the connecting body 100, and is used to mark the relative position between the second card holder 300 and the connecting body 100. Thus, the torsion detection device 10 can determine whether the laminate frame 20 has undergone torsion deformation by whether the first detection surface 250, the second detection surface 320, and the third detection surface 120 are coplanar, and can also determine whether the laminate frame 20 has undergone torsion deformation by using the marking positions of the first marking component 400 and the second marking component 500.

[0063] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0064] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0068] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A torsion detection device, characterized in that, include: Connect the main body (100); The first card holder (200) is rotatably connected to one end of the connecting body (100) about at least two intersecting directions and is used to engage with the laminate frame (20); The second card holder (300) is rotatably connected to the other end of the connecting body (100) about at least two intersecting directions and is used to engage with the laminated frame (20); The distortion detection device (10) further includes a detection structure, which is disposed on at least one of the connecting body (100), the first card holder (200), and the second card holder (300). The detection structure is used to detect the relative positions between the connecting body (100) and the first card holder (200) and between the connecting body (100) and the second card holder (300) to determine whether the laminated frame (20) is distorted.

2. The torsion detection device according to claim 1, wherein the first card holder (200) is provided with a first card groove (210) for engaging with the laminate frame (20), and the second card holder (300) is provided with a second card groove (310) for engaging with the laminate frame (20). The detection structure includes a first detection surface (250) located on the outer side wall of the first card holder (200), a second detection surface (320) located on the outer side wall of the second card holder (300), and a third detection surface (120) located on the outer side wall of the connecting body (100). When the groove depth direction of the first card groove (210), the axial direction of the connecting body (100), and the groove depth direction of the second card groove (310) are parallel, the first detection surface (250), the second detection surface (320), and the third detection surface (120) are coplanar.

3. The torsion detection device according to claim 1 or 2, wherein the detection structure includes a first marking component (400) and a second marking component (500), the first marking component (400) being mounted on one of the first card holder (200) and the connecting body (100) and used to mark the relative position between the first card holder (200) and the connecting body (100), and the second marking component (500) being mounted on one of the second card holder (300) and the connecting body (100) and used to mark the relative position between the second card holder (300) and the connecting body (100).

4. The torsion detection device according to claim 3, characterized in that, Both the first marking component (400) and the second marking component (500) include at least one marking element (410). One end of each marking element (410) is fixed to both ends of the connecting body (100), and the other end of each marking element (410) extends along the axial direction of the connecting body (100) and toward the first card holder (200) or the second card holder (300).

5. The torsion detection device according to claim 4, characterized in that, At least one scale mark is provided on the outer side wall of the marker (410), and each scale mark is spaced apart along the extending direction of the marker (410). And / or, both the first marking component (400) and the second marking component (500) include four of the marking elements (410), and the eight marking elements (410) are respectively disposed at the four corners of both ends of the connecting body (100).

6. The torsion detection device according to claim 4, characterized in that, The first card holder (200) facing the connecting body (100) and the second card holder (300) facing the connecting body (100) are each provided with at least one clearance hole (220). The end of each of the markers (410) away from the connecting body (100) extends into each of the clearance holes (220) and is spaced apart from the inner wall of each clearance hole (220).

7. The torsion detection device according to claim 6, characterized in that, The inner diameter of the clearance hole (220) is 1.2 to 1.5 times the outer diameter of the marker (410).

8. The torsion detection device according to claim 1 or 2, characterized in that, The first card holder (200) and the connecting body (100) are provided with a torsion ball (110) on one side of their respective sides, and a spherical groove (230) that rotates with the torsion ball (110) on the other side. And / or, a torsion ball (110) is provided on one side of the second card holder (300) and the connecting body (100) which are close to each other, and a spherical groove (230) is provided on the other side to rotate with the torsion ball (110).

9. The torsion detection device according to claim 8, characterized in that, The torsion detection device (10) further includes at least one rolling element, each of which is filled between the inner wall of the torsion ball (110) and the spherical groove (230).

10. The torsion detection device according to claim 1 or 2, characterized in that, The connecting body (100) includes a first connecting segment and a second connecting segment. One end of the first connecting segment is rotatably connected to the first card holder (200) about at least two intersecting directions, and the other end is movably connected to one end of the second connecting segment along the axial direction of the second connecting segment. The other end of the second connecting segment is rotatably connected to the second card holder (300) about at least two intersecting directions.

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