Detection tool

Abstract

The application provides a detection tool, which comprises a support plate, a first through hole and a plurality of second through holes are formed in the support plate, and the distance between the first through hole and each second through hole is different; two support cylinders are connected with the first through hole and one of the second through holes respectively; wherein each support cylinder comprises a first support section and a second support section which are coaxially arranged, the diameter of the first support section is smaller than that of the second support section, and the end of the second support section away from the first support section is in abutment with the support plate. The detection tool provided by the application can quickly detect whether the distance between two connecting holes on a bottom heater and the size of the connecting holes are qualified, and the detection is accurate.

Description

Technical Field

[0001] This application relates to the field of component testing technology, and in particular to a testing fixture. Background Technology

[0002] As a core piece of equipment in the photovoltaic industry, the monocrystalline furnace uses a heater to melt polycrystalline materials such as polycrystalline silicon and grow dislocation-free monocrystalline crystals using the Czochralski method. The bottom heater used for auxiliary material processing often has various special shapes and styles due to the need for manufacturers to optimize the crystal growth process and the limited space distribution at the bottom of the furnace. These are generally referred to as irregularly shaped bottom heaters.

[0003] The bottom heater has two connection holes, through which the positive and negative terminals of a power source are connected, respectively. After the bottom heater is manufactured, the distance between the two connection holes and the dimensions of the connection holes need to be checked, which is currently generally done manually. However, this inspection is slow and prone to errors. Utility Model Content

[0004] This application provides a testing fixture that can quickly and accurately detect whether the distance between two connecting holes on the bottom heater and the size of the connecting holes are up to standard.

[0005] This application provides a testing fixture, including:

[0006] A support plate has a first through hole and multiple second through holes, with different distances between the first through hole and each of the second through holes;

[0007] Two support cylinders are connected to the first through hole and one of the second through holes, respectively.

[0008] Each support cylinder includes a first support section and a second support section arranged coaxially. The diameter of the first support section is smaller than the diameter of the second support section, and the end of the second support section away from the first support section abuts against the support plate.

[0009] In one embodiment, the first through hole and a plurality of second through holes are arranged in a row along the length of the support plate, with the first through hole located on one side of all the second through holes.

[0010] In one embodiment, the interval between two adjacent second through holes is 10mm-20mm.

[0011] In one embodiment, the edge of the support plate is provided with a scale that extends along the length of the support plate.

[0012] In one embodiment, all the second through holes are arranged in two rows, and the extension directions of the two rows of second through holes intersect.

[0013] In one embodiment, the support plate includes a first plate and a second plate, the second plate being provided with a groove, and the end of the first plate extending into the interior of the groove and slidably connected to the second plate.

[0014] The first through hole is made on the first plate, and all the second through holes are made on the second plate.

[0015] In one embodiment, the testing fixture further includes a locking member that passes through the second plate and abuts against the first plate.

[0016] In one embodiment, the testing fixture further includes two fasteners, one of which passes through a first through hole and is locked to one of the support cylinders, and the other fastener passes through a second through hole and is locked to another support cylinder.

[0017] In one embodiment, a limiting groove is provided on the side of the support plate away from the support cylinder, and the two side walls opposite to the limiting groove abut against the opposite sides of the head of the fastener.

[0018] In one embodiment, a stud is provided at the end of the second support section away from the first support section, and the first through hole and each of the second through holes are threaded holes, with the stud extending into the corresponding through hole and threadedly connected to the through hole.

[0019] The testing fixture provided in this application includes a support plate and two support cylinders. The support plate has a first through hole and multiple second through holes, with different distances between the first through hole and each second through hole. The two support cylinders are connected to the first through hole and one of the second through holes, respectively. The distance between the two support cylinders can be set by connecting the support cylinders to the corresponding second through holes. When testing the bottom heater, the distance between the two support cylinders is first adjusted according to the specifications of the bottom heater, and then the two connecting holes of the bottom heater are fitted onto the two support cylinders. If they can be successfully fitted and pressing the bottom heater does not cause it to shake, it indicates that the distance between the two connecting holes and the size of the connecting holes are qualified; if they cannot be fitted, it indicates that the distance between the two connecting holes is unqualified or the size of the connecting holes is too small; if they can be successfully fitted but the bottom heater shakes when pressed, it indicates that the size of the connecting holes is too large. In this way, the testing fixture can quickly and accurately test the bottom heater. The first and second support sections of the support cylinders can adapt to connecting holes of different sizes, improving the versatility of the testing fixture. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the 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.

[0021] Figure 1 This is a schematic diagram of the structure of a bottom heater provided in an embodiment of this application;

[0022] Figure 2 for Figure 1 A top view of the bottom heater shown;

[0023] Figure 3 This is a schematic diagram of another bottom heater provided in an embodiment of this application;

[0024] Figure 4 for Figure 3 A top view of the bottom heater shown;

[0025] Figure 5 This is a schematic diagram of the structure of the testing fixture provided in the embodiments of this application;

[0026] Figure 6 for Figure 5 The exploded view of the testing fixture shown;

[0027] Figure 7 This is a schematic diagram of the bottom heater of the testing fixture provided in this embodiment;

[0028] Figure 8 for Figure 7 Exploded view;

[0029] Figure 9 This is a schematic diagram of another support plate provided in an embodiment of this application;

[0030] Figure 10 This is a cross-sectional view of another support plate provided in an embodiment of this application.

[0031] Figure label:

[0032] 100, Support plate; 110, First through hole; 120, Second through hole; 130, First plate; 140, Second plate; 141, Sliding groove; 150, Limiting groove;

[0033] 200. Support cylinder; 210. First support section; 220. Second support section;

[0034] 300. Locking components;

[0035] 400. Fasteners;

[0036] 20. Bottom heater; 21. Connecting hole. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figures 1-4As shown, the bottom heater 20 in a single crystal furnace, limited by the space distribution at the bottom of the furnace, often has various special shapes and styles, which we call irregularly shaped bottom heaters 20. When inspecting the bottom heater 20, the distance between the two connecting holes 21 and the size of the connecting holes 21 are generally checked manually. However, irregularly shaped bottom heaters 20 are difficult to position, resulting in slow inspection efficiency and a high risk of errors.

[0042] To address the aforementioned problems, this application provides a testing fixture comprising a support plate and two support cylinders. The support plate has a first through hole and multiple second through holes, with varying distances between the first and second through holes. The two support cylinders are connected to the first through hole and one of the second through holes, respectively. The distance between the two support cylinders can be set by connecting the support cylinders to their corresponding second through holes. When testing the bottom heater, the distance between the two support cylinders is first adjusted according to the specifications of the bottom heater, and then the two connecting holes of the bottom heater are fitted onto the two support cylinders. If the cylinders can be successfully fitted and pressing the bottom heater does not cause it to shake, it indicates that the distance between the two connecting holes and the size of the connecting holes are acceptable; if they cannot be fitted, it indicates that the distance between the two connecting holes is unacceptable or the size of the connecting holes is too small; if the cylinders can be successfully fitted but the bottom heater shakes when pressed, it indicates that the size of the connecting holes is too large. Thus, the testing fixture allows for rapid and accurate testing of the bottom heater. The first and second support sections of the support cylinders can accommodate connecting holes of different sizes, improving the versatility of the testing fixture.

[0043] The specific structure of the testing fixture provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0044] Reference Figures 5 to 8 As shown in the figure, this application embodiment provides a testing fixture, including a support plate 100 and two support cylinders 200.

[0045] The support plate 100 has a first through hole 110 and a plurality of second through holes 120, with different distances between the first through hole 110 and each of the second through holes 120. For example, a steel plate, a wooden board, or a carbon fiber plate can be used as the support plate 100; this is not a unique limitation. The support plate 100 can be rectangular. The number of second through holes 120 can be set as needed and is not a unique limitation. In one possible implementation, the plurality of second through holes 120 can be arranged in a row. Optionally, the diameter of the first through hole 110 and each of the second through holes 120 can be 5 mm.

[0046] The two support cylinders 200 are respectively connected to the first through hole 110 and one of the second through holes 120.

[0047] The two support cylinders 200 have identical structures and are located on the same side of the support plate 100. Schematic, the axial direction of each support cylinder 200 can be perpendicular to the extending direction of the support plate 100. Understandably, when one support cylinder 200 is connected to the first through hole 110, the distance between the two support cylinders 200 can be set by connecting the other support cylinder 200 to the corresponding second through hole 120, so that the distance between the two support cylinders 200 matches the rated distance between the two connecting holes 21 on the bottom heater 20 to be tested.

[0048] Each support cylinder 200 includes a first support section 210 and a second support section 220 arranged coaxially. The diameter of the first support section 210 is smaller than the diameter of the second support section 220. The end of the second support section 220 away from the first support section 210 abuts against the support plate 100.

[0049] Figures 5 to 8 As shown, both the first support section 210 and the second support section 220 are columnar structures. The first support section 210 and the second support section 220 can be formed into a single piece using an integral molding process. Those skilled in the art can set the diameter and length of each of the two support sections as needed; no single limitation is made here. The structure of the support cylinder 200 improves the versatility of the testing fixture, meaning that the connection hole 21 on the bottom heater 20 to be tested can be fitted onto either the first support section 210 or the second support section 220.

[0050] During the testing process, the support plate 100 is placed first. Two support cylinders 200 are fixed according to the specifications of the bottom heater 20 to be tested. The two connecting holes 21 of the bottom heater 20 to be tested are then fitted onto the two support cylinders 200. This allows the testing of whether the dimensions of the two connecting holes 21 and the distance between them are acceptable. If the connection can be successfully fitted and pressing the bottom heater 20 does not cause it to shake, it indicates that the distance between the two connecting holes 21 and the dimensions of the connecting holes 21 are acceptable. If the connection cannot be fitted, it indicates that the distance between the two connecting holes 21 is unacceptable or the dimensions of the connecting holes 21 are too small. If the connection can be successfully fitted but the bottom heater 20 shakes when pressed, it indicates that the dimensions of the connecting holes 21 are too large.

[0051] The testing fixture provided in this embodiment can be matched to cover the connection holes 21 of most irregularly shaped bottom heaters 20, ensuring an efficient, low-cost, and reliable testing method during the verification and testing of the bottom heater 20. The standardized design of the testing fixture ensures the accuracy of the key dimensions of the bottom heater 20 before it leaves the factory. Furthermore, the testing fixture provided in this embodiment can solve the testing problems of the bottom heater 20, optimize the cost and efficiency of key dimension testing of irregularly shaped bottom heaters 20, and improve the versatility of key dimension testing of irregularly shaped bottom heaters 20.

[0052] In one embodiment, such as Figures 5-8 As shown, the first through hole 110 and a plurality of second through holes 120 are arranged in a row along the length of the support plate 100, with the first through hole 110 located on one side of all the second through holes 120.

[0053] The first through hole 110 is spaced apart from the adjacent second through hole 120. Those skilled in the art can determine the distance between the first through hole 110 and the adjacent second through hole 120, as well as the distance between the first through hole 110 and the farthest second through hole 120, based on the distance between the two connecting holes 21 of a commonly used bottom heater 20. For example, the distance between the two connecting holes 21 on the bottom heater 20 is generally in the range of 600mm-900mm, the distance between the first through hole 110 and the adjacent second through hole 120 can be 600mm, and the distance between the first through hole 110 and the farthest second through hole 120 can be 900mm.

[0054] The above arrangement facilitates the layout of the first through hole 110 and the multiple second through holes 120, making it easier for workers to set the distance between the first through hole 110 and each of the second through holes 120.

[0055] In one possible implementation, the interval between two adjacent second through holes 120 is 10mm-20mm.

[0056] The spacing between two adjacent second through holes 120 can be 10mm, 12mm, 14mm, 16mm, 18mm, or 20mm, etc., and is not limited to a single size. For example, the spacing between two adjacent second through holes 120 can be 10mm. After the first through hole 110 is opened on the support plate 100, holes are drilled in batches at distances of 600mm, 610mm, 620mm, ... 880mm, 890mm, 900mm from the first through hole 110 to form multiple second through holes 120.

[0057] When the interval between two adjacent second through holes 120 is less than 10mm, the multiple second through holes 120 on the support plate 100 are too dense, which reduces the strength of the support plate 100 and affects the service life of the testing fixture; when the interval between two adjacent second through holes 120 is greater than 20mm, the multiple second through holes 120 on the support plate 100 are too sparse, which results in a lower detection range of the testing fixture.

[0058] In other words, the above setup can ensure both the structural strength of the support plate 100 and the detection range of the testing fixture.

[0059] In one possible implementation, the edge of the support plate 100 is provided with a scale that extends along the length of the support plate 100.

[0060] The scale can be engraved on the support plate 100. Schematic, the first through hole 110 and multiple second through holes 120 are all located within the range of the scale, and the position of the first through hole 110 is opposite to the zero mark of the scale.

[0061] With the above settings, during the testing process, staff can quickly locate the corresponding second through hole 120 according to the scale, and then quickly set the distance between the two support cylinders 200, which helps to improve testing efficiency.

[0062] like Figure 9 As shown, in one embodiment, all the second through holes 120 are arranged in two rows, and the extension directions of the two rows of second through holes 120 intersect.

[0063] For example, the arrangement direction of the first row of second through holes 120 intersects the arrangement direction of the second row of second through holes 120, and the intersection point is located on one side of the plurality of second through holes 120. Figure 9 As shown, the two rows of second through holes 120 are arranged alternately.

[0064] By setting it up as described above, the spacing between two adjacent second through holes 120 in each row of second through holes 120 can be increased, avoiding the multiple second through holes 120 on the support plate 100 from being too dense, which helps to ensure the structural strength of the support plate 100 and thus ensure the service life of the testing fixture.

[0065] In one embodiment, such as Figure 10 As shown, the support plate 100 includes a first plate body 130 and a second plate body 140. A groove 141 is provided on the second plate body 140. The end of the first plate body 130 extends into the interior of the groove 141 and is slidably connected to the second plate body 140.

[0066] For example, the slide groove 141 can be provided on the side of the second plate 140 away from the support cylinder 200, and the slide groove 141 extends along the length direction of the second plate 140. When the first plate 130 extends into the slide groove 141, the slide groove 141 can guide the first plate 130.

[0067] The first through hole 110 is formed on the first plate 130, and all the second through holes 120 are formed on the second plate 140.

[0068] Understandably, one support cylinder 200 is mounted on the first plate 130, and the other support cylinder 200 is mounted on the second plate 140. When the operator slides the first plate 130 relative to the second plate 140, the distance between the first through hole 110 and all the second through holes 120 can be adjusted, thereby adjusting the spacing between the two support cylinders 200.

[0069] By sliding the first plate 130, the adjustment range of the distance between the two support cylinders 200 can be increased, thereby improving the detection range of the detection fixture.

[0070] In a specific embodiment, such as Figure 10 As shown, the testing fixture also includes a locking member 300, which passes through the second plate 140 and abuts against the first plate 130.

[0071] When the locking member 300 abuts against the first plate 130, it locks the first plate 130, preventing it from sliding relative to the second plate 140. For example, the second plate 140 has a threaded hole on its side wall, allowing a bolt to be used as the locking member 300. The bolt's shank passes through the threaded hole and is threadedly connected to it. When the operator rotates the locking member 300, it moves relative to the second plate 140, causing it to abut against or disengage from the first plate 130, thus locking or unlocking the first plate 130.

[0072] In this embodiment, the first plate 130 and the second plate 140 can be fixed by the locking member 300. During the testing process, the first plate 130 will not slide relative to the second plate 140, so that the testing fixture can reliably test the bottom heater 20.

[0073] In one embodiment, such as Figures 5-8 As shown, the inspection fixture also includes two fasteners 400. One fastener 400 passes through the first through hole 110 and is locked to one of the support cylinders 200, and the other fastener 400 passes through the second through hole 120 and is locked to the other support cylinder 200.

[0074] Schematic illustration: A threaded hole may be provided on the support cylinder 200, which is coaxially arranged with the support cylinder 200. A bolt can be used as a fastener 400, with the bolt shank passing through the corresponding through hole and extending into the threaded hole of the support cylinder 200, where it is threadedly connected. When the fastener 400 is locked to the corresponding support cylinder 200, the head of the fastener 400 abuts against the side of the support plate 100 opposite to the support cylinder 200.

[0075] With the above configuration, one of the support cylinders 200 can be connected to the first through hole 110, and the other support cylinder 200 can be connected to the second through hole 120, and the two support cylinders 200 can be reliably locked onto the support plate 100 respectively.

[0076] During the testing of the bottom heater 20, the support plate 100 is placed first, and fasteners 400 are inserted through the first through hole 110 and the corresponding second through hole 120 according to the specifications of the bottom heater 20 to be tested. The two support cylinders 200 are connected to the two fasteners 400 respectively. Finally, the two connecting holes 21 of the bottom heater 20 are fitted onto the two support cylinders 200, and the size of the connecting holes 21 and the distance between the two connecting holes 21 can be directly tested to see if they are qualified.

[0077] In a specific embodiment, such as Figures 5-8 As shown, a limiting groove 150 is provided on the side of the support plate 100 opposite to the support cylinder 200. The two opposite sidewalls of the limiting groove 150 abut against the opposite sides of the head of the fastener 400.

[0078] Schematic, the first through hole 110 and the plurality of second through holes 120 are respectively located at the bottom of the limiting groove 150. When the first through hole 110 and the plurality of second through holes 120 are arranged along the length direction of the support plate 100, the limiting groove 150 extends along the length direction of the support plate 100. After the fastener 400 passes through the corresponding through hole, the head of the fastener 400 is located in the limiting groove 150. For example, the head of the fastener 400 can be a hexagonal prism structure. When the head of the fastener 400 extends into the limiting groove 150, the two opposite sides of the head abut against the two side walls of the limiting groove 150.

[0079] Those skilled in the art will understand that when the head of the fastener 400 is inserted into the limiting groove 150, the limiting groove 150 can limit the head of the fastener 400, preventing the fastener 400 from rotating relative to the support plate 100. The operator can rotate the support cylinder 200 to screw the screw of the fastener 400 into the support cylinder 200 to lock the support cylinder 200, which helps to improve the assembly efficiency of the testing fixture.

[0080] In one embodiment, a stud is provided at the end of the second support section 220 away from the first support section 210, and the first through hole 110 and each of the second through holes 120 are threaded holes, with the stud extending into the corresponding through hole and threadedly connected to the through hole.

[0081] Indicatively, the first support section 210, the second support section 220, and the stud are arranged coaxially, and the three can be formed into a single piece through an integral molding process. During assembly, the stud of the support cylinder 200 is inserted into the corresponding through hole, and the support cylinder 200 is fixed to the support plate 100 by rotating it.

[0082] In this embodiment, the two support cylinders 200 can be reliably installed on the support plate 100 and connected to the first through hole 110 and one of the second through holes 120 respectively.

[0083] 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.

[0084] 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 testing fixture, characterized in that, include: A support plate having a first through hole and a plurality of second through holes, wherein the distance between the first through hole and each of the second through holes is different; Two support cylinders are respectively connected to the first through hole and one of the second through holes; Each of the support cylinders includes a first support section and a second support section arranged coaxially. The diameter of the first support section is smaller than the diameter of the second support section, and the end of the second support section away from the first support section abuts against the support plate.

2. The testing fixture according to claim 1, characterized in that, The first through hole and a plurality of second through holes are arranged in a row along the length of the support plate, with the first through hole located on one side of all the second through holes.

3. The testing fixture according to claim 2, characterized in that, The interval between two adjacent second through holes is 10mm-20mm.

4. The testing fixture according to claim 2, characterized in that, The edge of the support plate is provided with a scale, which extends along the length of the support plate.

5. The testing fixture according to claim 1, characterized in that, All the second through holes are arranged in two rows, and the extension directions of the two rows of second through holes intersect.

6. The testing fixture according to claim 1, characterized in that, The support plate includes a first plate and a second plate. The second plate is provided with a sliding groove, and the end of the first plate extends into the interior of the sliding groove and is slidably connected to the second plate. The first through hole is formed on the first plate, and all the second through holes are formed on the second plate.

7. The testing fixture according to claim 6, characterized in that, The testing fixture also includes a locking component that passes through the second plate and abuts against the first plate.

8. The testing fixture according to claim 1, characterized in that, The testing fixture also includes two fasteners, one of which passes through the first through hole and is locked to one of the support cylinders, and the other fastener passes through the second through hole and is locked to the other support cylinder.

9. The testing fixture according to claim 8, characterized in that, The support plate is provided with a limiting groove on the side opposite to the support cylinder, and the two opposite sidewalls of the limiting groove abut against the opposite sides of the head of the fastener.

10. The testing fixture according to claim 1, characterized in that, The second support section has a stud at the end away from the first support section. The first through hole and each of the second through holes are threaded holes. The stud extends into the corresponding through hole and is threadedly connected to the through hole.

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