Clamp for testing bonding strength of heat absorber coating

Abstract

The utility model relates to the technical field of heat absorber coating testing, and discloses a clamp for testing the bonding strength of a heat absorber coating, which comprises a testboard and an arranged bidirectional lead screw, the end part of the bidirectional lead screw is connected with a driving motor, sliding plates are sleeved on the two sides of the surface of the bidirectional lead screw, and a fixed plate is arranged on the upper surface of each sliding plate; the telescopic end of the electric push rod is connected with a connecting seat; the telescopic end of the electric telescopic rod is connected with a clamping block. According to the clamp for testing the bonding strength of the heat absorber coating, a heat absorber is placed on the testing table, the driving motor is externally connected with a power source to drive the bidirectional lead screw to rotate on the testing table, and the sliding plate drives the clamping blocks to correspond to the heat absorber in position according to the steering direction of the bidirectional lead screw; after the electric push rod external power source drives the electric telescopic rod to approach the heat absorber through the connecting base on the fixing plate, the electric telescopic rod external power source drives the clamping block to be tightly attached to the heat absorber on the connecting base, and therefore the electric telescopic rod is driven to move towards the heat absorber.

Description

Technical Field

[0001] This utility model relates to the field of heat absorber coating testing technology, specifically a fixture for testing the bonding strength of heat absorber coatings. Background Technology

[0002] Absorber coatings play a crucial role in solar thermal utilization systems, directly affecting photothermal conversion efficiency and overall system performance. Absorber coatings are widely used in solar water heaters, solar collectors, and tower-type solar thermal power generation. With continuous technological advancements, new absorber coatings are constantly being developed, such as high-temperature solar spectral selective absorption coatings. These coatings possess higher absorptivity, lower emissivity, and superior performance, providing strong support for the development of solar thermal utilization systems. Absorber coating bonding strength testing requires the use of clamps. The main function of the clamps is to fix the test specimen, ensuring that it does not shift or loosen during the test.

[0003] Traditional fixtures for testing the bonding strength of absorber coatings connect an adjusting screw to a clamping block. The screw's rotation causes the clamping block to fit tightly against the absorber surface. Manually rotating the adjusting screw is inconvenient and results in uneven stress on the sample during testing, affecting the accuracy of the results. To address these issues, some fixtures use an electric actuator instead of an adjusting screw. The actuator's extension point moves the clamping block in the same direction, ensuring a tight fit between the block and the absorber surface. This simplifies operation, reduces uneven stress on the sample, and ensures accurate results. However, this method suffers from limitations due to the typically fixed position of the actuator and the limited length of its extension point, restricting the clamping range and reducing applicability. Therefore, a new fixture for testing the bonding strength of absorber coatings is proposed. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a fixture for testing the bonding strength of absorber coatings, thereby solving the aforementioned technical problems that not only limit the clamping range but also reduce applicability.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fixture for testing the bonding strength of a heat absorber coating, comprising:

[0008] The test bench and the bidirectional lead screw set on the front and back of the test bench, with the ends of the bidirectional lead screw coaxially connected to the drive motor, and sliding plates are sleeved on the left and right sides of the surface of the bidirectional lead screw, and the upper surface of the sliding plates is equipped with a fixing plate.

[0009] An electric push rod is located on the front of the fixed plate, and the telescopic end of the electric push rod extends outward through the front of the fixed plate and is connected to a connecting seat.

[0010] An electric telescopic rod is located at the lower part of the connecting seat, and the telescopic end of the electric telescopic rod is connected to a clamping block. Elastic pads and anti-slip textures are added to the surface of the clamping block. By placing the heat absorber on the upper surface of the test bench, the drive motor, powered by an external power source, rotates a bidirectional lead screw on the test bench. The sliding plate, according to the direction of the bidirectional lead screw, causes the clamping block to align with the clamping position of the heat absorber. The electric push rod, powered by an external power source, moves the electric telescopic rod closer to the heat absorber via the connecting seat on the fixed plate. The electric telescopic rod, powered by an external power source, then moves the clamping block towards the heat absorber on the connecting seat, ensuring that the elastic pads and anti-slip textures are tightly fitted to the surface of the heat absorber. This not only increases the clamping range but also enhances usability. Furthermore, the distance between adjacent sets of electric telescopic rods can be adjusted, allowing for the operation of different models of heat absorbers within a certain range.

[0011] Preferably, the number of sliding plates is four sets, and the back of each sliding plate is slidably engaged with the front and back of the test platform. This avoids the phenomenon of the sliding plates rotating with the bidirectional lead screw.

[0012] Preferably, the end of the electric telescopic rod extends outward through the back of the fixed plate, and the electric telescopic rod is positioned below the electric push rod. The electric telescopic rod can move along the fixed plate under the action of the electric push rod.

[0013] Preferably, the telescopic end of the electric telescopic rod is equipped with a plug-in post, and the plug-in post has evenly spaced plug-in holes around its outer perimeter. The electric telescopic rod is connected to the corresponding structure through the plug-in post and plug-in holes.

[0014] Preferably, a connector is inserted and connected to the outer side of the plug-in post, and the connector is connected to the clamping block. When the electric telescopic rod is connected to the clamping block, the plug-in post is inserted into the interior of the connector.

[0015] Preferably, insertion posts are evenly inserted around the outer surface of the connector, and each insertion post is fitted with a compression spring. The insertion posts are inserted into the insertion holes. When the insertion post is inserted into the connector, it moves towards the center of the connector's inner cavity under the action of the compression spring, and is inserted into the insertion hole of the insertion post, thus facilitating the replacement of the clamping block on the electric telescopic rod.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model provides a fixture for testing the bonding strength of absorber coatings, which has the following advantages:

[0018] This fixture for testing the coating bonding strength of heat absorbers works by placing the heat absorber on the upper surface of the test bench. An externally powered motor drives a bidirectional lead screw to rotate on the test bench. A sliding plate, following the direction of the lead screw, aligns the clamping block with the clamping point of the heat absorber. An externally powered electric push rod, connected to a fixed plate and via a connecting seat, moves an electric telescopic rod closer to the heat absorber. The electric telescopic rod, connected to a externally powered motor, then moves the clamping block towards the heat absorber, ensuring the elastic pad and anti-slip texture fit tightly against the surface of the heat absorber. This allows the electric telescopic rod to move towards the heat absorber, increasing the clamping range and versatility. Furthermore, the distance between adjacent sets of electric telescopic rods can be adjusted, allowing for operation on different models of heat absorbers within a certain range. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the bidirectional lead screw and its connection structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the sliding plate and its connection structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the separation structure of the clamping block and the connecting seat of this utility model.

[0023] In the diagram: 1. Test bench; 2. Bidirectional lead screw; 3. Drive motor; 4. Sliding plate; 5. Fixed plate; 6. Electric push rod; 7. Connecting seat; 8. Electric telescopic rod; 9. Clamping block; 10. Elastic pad; 11. Anti-slip texture; 12. Insertion post; 13. Insertion hole; 14. Insertion seat; 15. Insertion post; 16. Compression spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a technical solution: a fixture for testing the bonding strength of a heat absorber coating, comprising: (see details below) Figure 1 , Figure 2 , Figure 3Test bench 1, and bidirectional lead screw 2 set on the front and back of test bench 1, with drive motor 3 coaxially connected to the ends of bidirectional lead screw 2, and sliding plates 4 sleeved on the left and right sides of the surface of bidirectional lead screw 2, and fixing plates 5 installed on the upper surface of sliding plates 4.

[0026] An electric push rod 6 is located on the front of the fixed plate 5, and the telescopic end of the electric push rod 6 extends outward through the front of the fixed plate 5 and is connected to a connecting seat 7.

[0027] An electric telescopic rod 8 is located at the lower part of the connecting seat 7, and a clamping block 9 is connected to the telescopic end of the electric telescopic rod 8. Elastic pads 10 and anti-slip textures 11 are respectively added to the surface of the clamping block 9. By placing the heat absorber on the upper surface of the test bench 1, the external power supply of the drive motor 3 drives the bidirectional lead screw 2 to rotate on the test bench 1. The sliding plate 4, according to the rotation of the bidirectional lead screw 2, drives the clamping block 9 to align with the clamping position of the heat absorber. The external power supply of the electric push rod 6, on the fixed plate 5, drives the electric telescopic rod 8 closer to the heat absorber through the connecting seat 7. The external power supply of the electric telescopic rod 8 then drives the clamping block 9 towards the heat absorber on the connecting seat 7, making the elastic pads 10 and anti-slip textures 11 tightly adhere to the surface of the heat absorber. On the one hand, this allows the electric telescopic rod 8 to move towards the heat absorber, not only increasing the clamping range but also enhancing its applicability. On the other hand, the distance between adjacent sets of electric telescopic rods 8 can be adjusted, allowing operation on different models of heat absorbers within a certain range.

[0028] Please see Figure 1 There are four sets of sliding plates 4, and the back of each sliding plate 4 is slidably engaged with the front and back of the test platform 1. This prevents the sliding plates 4 from rotating with the bidirectional lead screw 2. The end of the electric telescopic rod 8 extends outward through the back of the fixed plate 5, and the electric telescopic rod 8 is located below the electric push rod 6. The electric telescopic rod 8 can move along the fixed plate 5 under the drive of the electric push rod 6.

[0029] Please see Figure 4The telescopic end of the electric telescopic rod 8 is equipped with a plug-in post 12, and plug-in holes 13 are evenly distributed around the outer perimeter of the plug-in post 12. The electric telescopic rod 8 is connected to the corresponding structure through the plug-in post 12 and the plug-in holes 13. A plug-in seat 14 is inserted and connected to the outer perimeter of the plug-in post 12, and the plug-in seat 14 is connected to the clamping block 9. When the electric telescopic rod 8 is connected to the clamping block 9, the plug-in post 12 is inserted into the interior of the plug-in seat 14. Insertion posts 15 are evenly distributed around the outer perimeter of the plug-in seat 14, and each insertion post 15 is fitted with a compression spring 16. The insertion posts 15 are inserted and connected to the plug-in holes 13. When the plug-in post 12 is inserted into the interior of the plug-in seat 14, the insertion post 15 moves towards the center of the inner cavity of the plug-in seat 14 under the action of the compression spring 16, and the insertion post 15 is inserted into the interior of the plug-in hole 13 of the plug-in post 12, thereby facilitating the replacement of the clamping block 9 on the electric telescopic rod 8.

[0030] This scheme involves placing the heat absorber on the upper surface of the test bench 1. The drive motor 3, powered by an external power source, rotates the bidirectional lead screw 2 on the test bench 1. The sliding plate 4, according to the direction of the bidirectional lead screw 2, causes the clamping block 9 to align with the clamping position of the heat absorber. The electric push rod 6, powered by an external power source, drives the electric telescopic rod 8 near the heat absorber via the connecting seat 7 on the fixed plate 5. The electric telescopic rod 8, powered by an external power source, drives the clamping block 9 towards the heat absorber on the connecting seat 7, causing the elastic pad 10 and anti-slip ridges 11 to fit tightly against the surface of the heat absorber. When the electric telescopic rod 8 connects with the clamping block 9, the insertion post 12 is inserted into the interior of the insertion seat 14. When the insertion post 12 is inserted into the interior of the insertion seat 14, the insertion post 15 moves towards the center of the inner cavity of the insertion seat 14 under the action of the compression spring 16, and inserts the insertion post 15 into the insertion hole 13 of the insertion post 12.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing the bonding strength of a heat absorber coating, characterized in that, include: Test bench (1), and bidirectional lead screw (2) set on the front and back of test bench (1), and drive motor (3) coaxially connected to the ends of bidirectional lead screw (2), and sliding plates (4) are sleeved on the left and right sides of the surface of bidirectional lead screw (2), and fixed plates (5) are installed on the upper surface of sliding plates (4). An electric push rod (6) is provided on the front of the fixed plate (5), and the telescopic end of the electric push rod (6) extends outward through the front of the fixed plate (5) and is connected to a connecting seat (7). An electric telescopic rod (8) is provided at the lower part of the connecting seat (7), and a clamping block (9) is connected to the telescopic end of the electric telescopic rod (8), and an elastic pad (10) and anti-slip ridges (11) are respectively added to the surface of the clamping block (9).

2. The fixture for testing the bonding strength of a heat sink coating according to claim 1, wherein: The number of sliding plates (4) is four sets, and the back of the sliding plates (4) are slidably connected to the front and back of the test platform (1).

3. The fixture of claim 1, wherein: The end of the electric telescopic rod (8) extends outward through the back of the fixing plate (5), and the electric telescopic rod (8) is located below the electric push rod (6).

4. The fixture of claim 1, wherein: The telescopic end of the electric telescopic rod (8) is equipped with a plug-in post (12), and plug-in holes (13) are evenly opened around the outer periphery of the plug-in post (12).

5. A fixture for testing the bonding strength of a heat absorber coating according to claim 4, characterized in that: A connector (14) is inserted and connected to the outside of the plug (12), and the connector (14) is connected to the clamp (9).

6. A fixture for testing the bond strength of a heat sink coating according to claim 5, wherein: The outer surface of the plug-in base (14) is uniformly provided with insertion posts (15), and each insertion post (15) is fitted with a compression spring (16). The insertion posts (15) are inserted and connected to the plug-in hole (13).

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