Sample support for testing thermal shock resistance of photovoltaic glass

Abstract

The utility model relates to the technical field of thermal shock resistance of photovoltaic glass, in particular to a sample bracket for testing thermal shock resistance of photovoltaic glass. The utility model comprises a main frame, which is used for bearing a photovoltaic glass sample; the adjusting assembly is used for driving the clamping mechanism to move on the screw rod in the radial direction; wherein the adjusting assembly comprises an outer ring, a plurality of balls are clamped in the outer ring, an inner ring is movably connected to the inner sides of the balls, an extension pipe is welded to the outer side of the inner ring, threads are formed in the inner wall of the extension pipe, and the extension pipe is in threaded connection with the screw rod through the threads; the connecting rods are installed at the adjacent positions of the pressing balls, and the fixing rod is fixedly connected with one connecting rod. The problems that when the impact resistance of the photovoltaic glass is tested, various glass sheets cannot be tested in the same environment, meanwhile, it is difficult to ensure that samples are heated evenly, and errors occur in experimental results are solved.

Description

Technical Field

[0001] The present application relates to the technical field of thermal shock resistance of photovoltaic glass, and in particular to a sample holder for testing the thermal shock resistance of photovoltaic glass. Background Art

[0002] The thermal shock resistance of photovoltaic glass refers to the maximum temperature change the material can withstand without cracking, or the number of thermal shocks it can withstand at that temperature. This performance is often directly related to the safety and reliability of photovoltaic modules.

[0003] The prior art, such as the utility model with announcement number CN221550331U, specifically discloses a strength testing device, which stably places glass plates of different specifications and sizes through an adjustable glass plate placement structure. The placement frame is returned to the working chamber under the action of the motor-driven transverse screw, and the top electric push rod is started. The glass plate is pressed under the downward pressure of the clamping plate and the cooperation of the clamping structure. The position of the strength test impact device is adjusted by the internal fixed rod and the top screw to change the impact test point.

[0004] In actual production, testing the impact resistance of photovoltaic glass is a key component of product quality control. Existing techniques often use ovens and water tanks for testing, but these methods cannot simultaneously test multiple glass sheets. Furthermore, evenly heating the samples in the oven during testing cannot guarantee uniform heating, which can lead to errors in the final test results. Utility Model Content

[0005] One of the technical problems to be solved by this application is that when testing the impact resistance of photovoltaic glass, multiple glass sheets cannot be tested under the same environment. It is also difficult to ensure that the samples are heated evenly, which leads to errors in the experimental results.

[0006] To solve the above technical problems, the present invention provides a sample holder for testing the thermal shock resistance of photovoltaic glass, comprising:

[0007] Main frame, which is used to carry photovoltaic glass samples;

[0008] Screw, both ends of the screw are fixedly installed on both sides of the inner wall of the main frame;

[0009] A clamping mechanism, wherein a plurality of clamping mechanisms are provided on the screw rod, and the clamping mechanisms are used to clamp the photovoltaic glass panel sample;

[0010] a guide rod on which one end of the clamping mechanism slides; and

[0011] An adjusting assembly, the adjusting assembly is used to drive the clamping mechanism to move radially on the screw;

[0012] Among them, the adjustment component includes an outer ring, several balls are clamped inside the outer ring, the inner side of the balls is movably connected to the inner ring, an extension tube is welded to the outer side of the inner ring, the inner wall of the extension tube is provided with a thread, and the extension tube is threadedly connected to the screw rod by means of the thread, the clamping mechanism includes a fixed rod, a connecting rod and a pressure ball, the fixed rod is installed on the outer ring, the connecting rod is installed at adjacent positions of several pressure balls, and the fixed rod is fixedly connected to one of the connecting rods.

[0013] In some embodiments, the clamping mechanism further includes a positioning rod and a slip ring, one end of the positioning rod is fixedly connected to the connecting rod, the positioning rod and the fixed rod are symmetrically distributed, the other end of the positioning rod is fixedly connected to the slip ring, and the slip ring is slidably connected to the guide rod.

[0014] In some embodiments, the clamping mechanism further includes a sliding ball, which is rotatably mounted in the slip ring and slides on the guide rod.

[0015] In some embodiments, the extension tube and the inner ring are integrally formed, the inner diameters of the extension tube and the inner ring are equal and flush, the inner walls of the extension tube and the inner ring are provided with continuous threads, and the inner ring is threadably connected to the screw rod via the threads.

[0016] In some embodiments, the adjustment assembly further includes a plurality of mounting rods, and the plurality of mounting rods are evenly and fixedly mounted on the extension tube.

[0017] In some embodiments, a plurality of pressure balls and connecting rods are connected to form a rectangular area, and the pressure balls and the connecting rods are detachably connected.

[0018] In some embodiments, a threaded hole is provided at a position of the pressure ball corresponding to the connecting rod, and threads are provided at both ends of the connecting rod connected to the pressure ball, and the connecting rod is threadedly connected to the threaded hole of the pressure ball.

[0019] In some embodiments, the radius of the pressed ball is greater than the total length of the outer ring and the extension tube, and the pressed ball is specifically a polytetrafluoroethylene ball.

[0020] In some embodiments, a positioning ruler is installed on the bottom side of the inner wall of the main frame, and the length of the positioning ruler is adapted to the inner width of the main frame.

[0021] In some embodiments, handles are fixedly installed on both sides of the main frame, and the two handles are symmetrically distributed on both sides of the main frame.

[0022] Through the above-mentioned technical solution, the sample holder provided in this application for testing the thermal shock resistance of photovoltaic glass can place a variety of photovoltaic glass panels between the pressure balls for clamping and fixing, which is convenient for the experimenters to take and place the glass panels to be tested. Placing a variety of experimental samples at the same time can realize the simultaneous testing of a variety of glass samples; since a variety of photovoltaic glass panels are tested in the same environment, it is possible to control the variables in the experiment, thereby improving the reliability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 3D schematic diagram of the sample holder for testing the thermal shock resistance of photovoltaic glass disclosed in the embodiment of the present application;

[0025] Figure 2 Schematic diagram of the structure of the sample holder clamping mechanism for testing the thermal shock resistance of photovoltaic glass disclosed in the embodiment of the present application;

[0026] Figure 3 1 is a schematic structural diagram of a sample holder adjustment assembly for testing the thermal shock resistance of photovoltaic glass disclosed in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the partial structure of a sample holder for testing the thermal shock resistance of photovoltaic glass disclosed in an embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Main frame; 2. Handle; 3. Screw; 4. Clamping mechanism; 41. Adjustment assembly; 411. Outer ring; 412. Ball bearing; 413. Inner ring; 414. Extension tube; 415. Mounting rod; 42. Fixing rod; 43. Connecting rod; 44. Pressure ball; 45. Positioning rod; 46. Slip ring; 47. Sliding ball; 5. Positioning ruler; 6. Guide rod. DETAILED DESCRIPTION

[0030] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0031] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0032] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0035] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0037] Reference Figure 1 As shown, the utility model provides a technical solution: a sample holder for testing the thermal shock resistance of photovoltaic glass, comprising a main frame 1, the main frame 1 is used to carry the photovoltaic glass sample;

[0038] Screw 3, both ends of the screw 3 are fixedly mounted on both sides of the inner wall of the main frame 1;

[0039] A clamping mechanism 4, wherein a plurality of clamping mechanisms 4 are provided on the screw 3, and the clamping mechanism 4 is used to clamp the photovoltaic glass panel sample;

[0040] a guide rod 6 on which one end of the clamping mechanism 4 slides; and

[0041] The adjusting component 41 is used to drive the clamping mechanism 4 to move radially on the screw 3.

[0042] The following is a detailed description of the specific settings and functions of the clamping mechanism.

[0043] Reference Figure 2 、 Figure 3 and Figure 4 As shown, in this embodiment: the adjustment component 41 includes an outer ring 411, a plurality of balls 412 are clamped in the outer ring 411, an inner ring 413 is movably connected to the inner side of the ball 412, an extension tube 414 is welded to the outer side of the inner ring 413, the inner wall of the extension tube 414 is provided with a thread, and the extension tube 414 is threadedly connected to the screw rod 3 by means of the thread, the clamping mechanism 4 includes a fixed rod 42, a connecting rod 43 and a pressure ball 44, the fixed rod 42 is mounted on the outer ring 411, and the connecting rod 43 is mounted on the adjacent positions of the plurality of pressure balls 44, The fixing rod 42 is fixedly connected to one of the connecting rods 43, and the glass piece to be tested can be placed between several pressure balls 44, and then the extension tube 414 is rotated, so that the extension tube 414 drives the outer ring 411 to move with the help of the thread, and then drives the pressure ball 44 to move, so that the pressure ball 44 clamps and fixes the glass piece. After the glass piece is clamped and fixed, the spacing between the multiple glass pieces is the diameter of the pressure ball 44, so that the experimental variables can be controlled while ensuring that the multiple glass pieces are heated evenly, thereby improving the accuracy of the experimental results.

[0044] The clamping mechanism 4 also includes a positioning rod 45 and a slip ring 46. One end of the positioning rod 45 is fixedly connected to the connecting rod 43. The positioning rod 45 and the fixed rod 42 are symmetrically distributed. The other end of the positioning rod 45 is fixedly connected to the slip ring 46, and the slip ring 46 is slidably connected to the guide rod 6. When the extension tube 414 is rotated to drive the pressure ball 44 to move, the slip ring 46 will slide on the guide rod 6. The guide rod 6 not only supports the connecting rod 43 at the other end but also guides the movement of the pressure ball 44. The clamping mechanism 4 also includes a sliding ball 47. The sliding ball 47 is rotatably mounted in the slip ring 46. The sliding ball 47 slides on the guide rod 6. With the help of the sliding ball 47, the original sliding friction between the slip ring 46 and the guide rod 6 is converted into rolling friction, reducing the friction between the slip ring 46 and the guide rod 6, thereby allowing the pressure ball 44 to move radially more smoothly. The extension tube 414 is integrally formed with the inner ring 413. The inner diameters of the extension tube 414 and the inner ring 413 are equal and flush. The inner walls of the extension tube 414 and the inner ring 413 are provided with continuous threads, which are threadedly connected to the screw rod 3. The adjustment assembly 41 also includes a plurality of mounting rods 415, which are evenly fixed to the extension tube 414. When rotating the extension tube 414, the operator can directly grasp the mounting rods 415 to rotate the extension tube 414, which is convenient for the operator. The plurality of pressure balls 44 and the connecting rod 43 are connected to form a rectangular area. The pressure balls 44 and the connecting rod 43 are detachably connected. This detachable connection allows for quick replacement of the pressure balls 44 when the surface of the pressure balls 44, which repeatedly clamp the glass sheet, becomes worn.

[0045] The pressure ball 44 has a threaded hole corresponding to the position of the connecting rod 43. Both ends of the connecting rod 43 connecting to the pressure ball 44 are threaded. The connecting rod 43 is threaded into the threaded hole of the pressure ball 44. The threaded connection allows the position of the pressure ball 44 to be fine-tuned to accommodate glass pieces of different sizes. The radius of the pressure ball 44 is greater than the total length of the outer ring 411 and the extension tube 414. When the pressure ball 44 clamps and fixes the glass piece, it can ensure that there is no movement interference between adjacent outer rings 411 and adjacent extension tubes 414. This ensures that when clamping the glass piece, the extension tube 414 can be rotated normally to ensure that the glass piece can be properly clamped. A positioning ruler 5 is installed on the bottom side of the inner wall of the main frame 1. The length of the positioning ruler 5 is compatible with the internal width of the main frame 1. After the glass piece is clamped and fixed, the positioning ruler 5 can be used to determine the position of the glass piece relative to the main frame 1, which facilitates better recording of experimental variable data. Handles 2 are fixedly installed on both sides of the main frame 1, and the two handles 2 are symmetrically distributed on both sides of the main frame 1.

[0046] The sample is lightweight physically strengthened glass with a minimum size of 300mmx300mm, manufactured under the same thickness, type and process conditions as the product. When it is necessary to test the thermal shock resistance of multiple glass sheets, the sample is first placed between the pressure balls 44 of adjacent clamping mechanisms 4, so that the lower end of the sample is temporarily supported on the screw 3, and then the mounting rod 415 is rotated to drive the extension tube 414 and the inner ring 413 to rotate. The extension tube 414 and the inner ring 413 rotate and move radially on the screw 3 with the help of the internal thread. When the inner ring 413 rotates, it can roll with the ball 412, so the outer ring 411 only moves radially. The outer ring 411 will pull the connecting rod 43 and the pressure ball 44 to move, and the slip ring 46 at the other end will drive the sliding ball 47 to slide on the guide rod 6, playing a role in guiding and supporting the movement of the pressure ball 44. When the pressure ball 44 moves to the appropriate position, the sample is placed between the pressure balls 44 of adjacent clamping mechanisms 4, and then the extension tube 414 is further rotated to clamp the sample with the help of the pressure ball 44;

[0047] Repeat the above operation and place all photovoltaic glass samples to be tested, with two-thirds of the glass sheet exposed at the top as a height "warning line". In the oven, keep it warm at 200℃±2℃ for 4 hours. When the oven alarm setting time is up, put on high-temperature gloves, grab the two handles 2 respectively, and quickly take them out within 10 seconds and put them into the prepared 0℃ ice-water mixture tank, so that the water covers more than 1 / 3 of the height of the bracket sample. After 5 minutes, observe whether the glass is damaged. Judgment standard: fish-scale peeling on the surface and edge of the glass is not considered damaged.

[0048] By setting up this structure, not only can multiple samples be measured simultaneously, but also the testing environment in the oven or in the ice-water mixture can be guaranteed to be consistent, thereby improving the accuracy of the experiment.

[0049] So far, the various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0050] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A sample holder for testing the thermal shock resistance of photovoltaic glass, characterized in that: include: A main frame (1), wherein screw rods (3) are fixedly mounted on both sides of the inner wall of the main frame (1); A clamping mechanism (4), wherein a plurality of the clamping mechanisms (4) are arranged on the screw (3); A guide rod (6), one end of the clamping mechanism (4) slides on the guide rod (6); and an adjusting assembly (41), the adjusting assembly (41) moving radially on the screw (3); The adjusting assembly (41) includes an outer ring (411), a plurality of balls (412) are clamped inside the outer ring (411), an inner ring (413) is movably connected to the inner side of the balls (412), an extension tube (414) is welded to the outer side of the inner ring (413), the inner wall of the extension tube (414) is provided with a thread, and the extension tube (414) is threadedly connected to the screw rod (3) by means of the thread, and the clamping mechanism (4) includes a fixing rod (42), a connecting rod (43) and a pressure ball (44), the fixing rod (42) is installed on the outer ring (411), the connecting rod (43) is installed at adjacent positions of the plurality of pressure balls (44), and the fixing rod (42) is fixedly connected to one of the connecting rods (43).

2. The sample holder for thermal shock resistance testing of photovoltaic glass according to claim 1, characterized in that: The clamping mechanism (4) further comprises a positioning rod (45) and a slip ring (46), one end of the positioning rod (45) is fixedly connected to the connecting rod (43), the positioning rod (45) and the fixing rod (42) are symmetrically distributed, the other end of the positioning rod (45) is fixedly connected to the slip ring (46), and the slip ring (46) is slidably connected to the guide rod (6).

3. The sample holder for testing the thermal shock resistance of photovoltaic glass according to claim 2, characterized in that: The clamping mechanism (4) further comprises a sliding ball (47), wherein the sliding ball (47) is rotatably mounted in the sliding ring (46), and the sliding ball (47) slides on the guide rod (6).

4. The sample holder for thermal shock resistance testing of photovoltaic glass according to claim 1, characterized in that: The extension tube (414) and the inner ring (413) are integrally formed. The inner diameters of the extension tube (414) and the inner ring (413) are equal and flush. The inner walls of the extension tube (414) and the inner ring (413) are provided with continuous threads, and the inner ring (413) is threadedly connected to the screw rod (3) via the threads.

5. The sample holder for photovoltaic glass thermal shock resistance test according to claim 1, characterized in that: The adjustment assembly (41) further comprises a plurality of mounting rods (415), wherein the plurality of mounting rods (415) are evenly fixedly mounted on the extension tube (414).

6. The sample holder for photovoltaic glass thermal shock resistance test according to claim 1, characterized in that: A plurality of the pressure balls (44) and the connecting rod (43) are connected to form a rectangular area, and the pressure balls (44) and the connecting rod (43) are detachably connected.

7. The sample holder for thermal shock resistance testing of photovoltaic glass according to claim 6, characterized in that: The pressure ball (44) is provided with a threaded hole at a position corresponding to the connecting rod (43), and both ends of the connecting rod (43) connected to the pressure ball (44) are provided with threads, and the connecting rod (43) is threadedly connected to the threaded hole of the pressure ball (44).

8. The sample holder for photovoltaic glass thermal shock resistance test according to claim 1, characterized in that: The radius of the pressure ball (44) is greater than the total length of the outer ring (411) and the extension tube (414), and the pressure ball (44) is specifically a polytetrafluoroethylene ball.

9. The sample holder for photovoltaic glass thermal shock resistance test according to claim 1, characterized in that: A positioning ruler (5) is installed on the bottom side of the inner wall of the main frame (1), and the length of the positioning ruler (5) is adapted to the inner width of the main frame (1).

10. The sample holder for photovoltaic glass thermal shock resistance test according to claim 1, characterized in that: Handles (2) are fixedly mounted on both sides of the main frame (1), and the two handles (2) are symmetrically distributed on both sides of the main frame (1).

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