A device for testing the crack resistance of fire-retardant coatings

Abstract

This utility model relates to the technical field of fire-retardant coating performance testing devices, specifically a crack-resistant performance testing device for fire-retardant coatings. It includes a workbench, a mounting frame on top of the workbench, a hot air blower inside the mounting frame, a fixing rod on the side of the mounting frame, a display screen on the end of the fixing rod furthest from the mounting frame, a moving positioning mechanism, and a clamping observation mechanism. The moving positioning mechanism is located on top of the workbench; the clamping observation mechanism includes clamping components and observation components, and is located on top of the moving positioning mechanism. This utility model, through the moving positioning mechanism, controls the sliding block and sliding plate to slide on straight slide rail one and straight slide rail two respectively. This simulates different environmental conditions, thereby evaluating the crack-resistant performance of fire-retardant coatings under different environments. Furthermore, by arbitrarily adjusting the position of the test plate, a comprehensive evaluation of the coating in different areas can be performed, ensuring the reliability of the overall crack-resistant performance.

Description

Technical Field

[0001] This utility model relates to the technical field of fire-retardant coating performance devices, and in particular to a device for testing the crack resistance performance of fire-retardant coatings. Background Technology

[0002] Fire-retardant coatings are special coatings applied to the surface of combustible substrates to reduce the flammability of the coated material, inhibit the rapid spread of fire, and improve the fire resistance of the coated material. They are applied to the surface of combustible substrates to alter the surface combustion characteristics of the material and inhibit the rapid spread of fire; or to building components to improve the fire resistance of the components.

[0003] Chinese Patent No. CN218382319U discloses a testing component for the surface crack resistance performance of fire-retardant coatings. The component includes a testing base for placing the fire-retardant coating product to be tested; a support frame disposed on the testing base; a mounting chamber rotatably connected to the support frame, with an open bottom; a hot air drying assembly disposed in the mounting chamber for hot air drying the fire-retardant coating product placed on the testing base; a drive unit for driving the mounting chamber to swing along a pivot point connected to the support frame; and a temperature detection unit disposed on the upper surface of the fire-retardant coating product for detecting the temperature of the airflow generated by the hot air drying assembly. The beneficial effects of this invention are: the heated airflow can be blown onto the surface of the fire-retardant coating product, thereby enabling weather resistance and crack resistance testing of the fire-retardant coating product surface; and the opening position of the mounting chamber can be alternately changed, thus simulating the changes in the fire-retardant coating product under periodic heat influence in a real environment.

[0004] However, the aforementioned publicly available solutions have the following shortcomings: the existing fire-retardant coating crack resistance testing device cannot directly adjust the testing and observation positions of the protective coating test plate on the device, requiring staff to repeatedly disassemble and reinstall the test plate, which affects the testing efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that the detection and observation positions of the protective coating test plate cannot be arbitrarily adjusted, and to propose a device for testing the crack resistance performance of fire-retardant coatings.

[0006] The technical solution of this utility model: A device for testing the crack resistance performance of fire-retardant coatings, comprising a workbench, a mounting frame disposed on the top of the workbench, a hot air blower disposed inside the mounting frame, a fixing rod disposed on the side of the mounting frame, and a display screen disposed on the end of the fixing rod away from the mounting frame; further comprising:

[0007] The mobile positioning mechanism is located on the top of the workbench and is used to move the board to be tested to a suitable testing position.

[0008] The device also includes a clamping and observation mechanism, which consists of a clamping component and an observation component. The clamping and observation mechanism is located on top of the moving and positioning mechanism and is used to clamp the test board and control the observation component to continuously rotate and observe the changes in the test board. The observation component is an electronic magnifying glass. The electronic magnifying glass rotates around the test board under the drive of the clamping and observation mechanism. The side of the electronic magnifying glass is provided with a wire insertion port for connecting a wire. The other end of the wire is connected to the wiring port on the display screen.

[0009] Preferably, the mobile positioning mechanism includes a first linear slide rail, a second linear slide rail, a sliding block, a support column, a sliding plate, and a positioning component;

[0010] A straight slide rail 1 is set on the top of the worktable, a sliding block is slidably set on the straight slide rail 1, a support column is set on the top of the sliding block, a straight slide rail 2 is set on the top of the support column, and a sliding plate is slidably set on the straight slide rail 2.

[0011] The positioning component is set on the straight slide rail and is used to fix the sliding block and sliding plate after they have moved to the appropriate position.

[0012] Preferably, the positioning assembly includes a positioning hole one, a positioning hole two, a positioning rod one, and a positioning rod two;

[0013] Positioning hole one is set on straight slide rail one, positioning hole two is set on straight slide rail two, positioning rod one is engaged in positioning hole one, and positioning rod two is engaged in positioning hole two.

[0014] Preferably, the clamping and observation mechanism includes a rotating clamping assembly and an observation assembly;

[0015] The rotating clamping assembly is located on the side of the straight slide rail 2 and is used to clamp the test board and adjust the detection angle of the test board;

[0016] The observation component is located on top of the rotating clamping component and is used to rotate around the test plate for observation during the testing process.

[0017] Preferably, the rotating clamping assembly includes a connecting rod, an annular slide rail, a turntable, and a fixing plate;

[0018] Connecting rod one is located on the side of straight slide rail two. Circular slide rail one is located at the end of connecting rod one away from straight slide rail two. Turntable is rotatably mounted on circular slide rail one. Fixed plate is located on the side of turntable away from circular slide rail one. A threaded rod is threadedly connected to the inner side of fixed plate. A rotating rod is located at the top of the threaded rod. A clamping plate one is located at the bottom of the threaded rod. A clamping plate two is located below clamping plate one. Positioning holes three are located on the side of turntable. Multiple positioning holes three are provided. A sliding rod is slidably mounted inside the positioning hole three. A spring is mounted on the outer side of the sliding rod. A pull rod is located at the end of the sliding rod away from positioning hole three. A fixed block is slidably mounted on the section of the sliding rod near the pull rod.

[0019] Preferably, the observation assembly includes a connecting shaft, a second connecting rod, a second annular slide rail, and an electric slider;

[0020] The connecting shaft is located at the center of the turntable. The outer side of the connecting shaft is rotatably connected to the inner side of the first annular slide rail. The second connecting rod is located at the end of the connecting shaft away from the turntable. The second annular slide rail is located at the top of the second connecting rod. The electric slider is slidably mounted on the second annular slide rail. The side of the electric slider is provided with a mounting frame.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] 1. By setting up a moving positioning mechanism, the sliding block and sliding plate are controlled to slide on straight slide rail one and straight slide rail two respectively. Controlling the sliding block can change the distance between the test plate and the hot air blower, thereby controlling the drying intensity of the hot air blower. Controlling the sliding plate can change the position of the test plate, thereby conducting crack resistance tests on the test plate at different positions. This can simulate different environmental conditions, such as temperature gradient and wind speed, to evaluate the crack resistance performance of fire-retardant coatings under different environments. Since different fire-retardant coatings require different heating conditions to trigger their potential crack formation, adjusting the distance can make the testing process more flexible and adapt to the needs of different coating characteristics. Arbitrarily adjusting the position of the test plate allows for a comprehensive evaluation of the coating in different areas, ensuring the reliability of the overall crack resistance performance.

[0023] 2. The clamping and observation mechanism allows the protective coating test plate to be clamped between clamping plate one and clamping plate two, and can be rotated to adjust the detection angle. An electric slider drives an electronic magnifying glass to fully magnify and observe the test plate. Clamping plate one can move up and down to accommodate test plates of different thicknesses, making the device more versatile. Adjusting the angle of the test plate can simulate different wind environments, thus evaluating the crack resistance performance of the fire-retardant coating under different wind conditions. The electronic magnifying glass enables real-time observation of different areas, ensuring no potential cracks are missed. Furthermore, the electric slider precisely controls the movement trajectory and speed of the magnifying glass, thereby improving detection accuracy. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the rear structure;

[0026] Figure 3 This is a schematic diagram of the mobile positioning mechanism;

[0027] Figure 4This is a schematic diagram of the clamping observation mechanism;

[0028] Figure 5 for Figure 4 An enlarged diagram of A in the diagram.

[0029] Reference numerals: 1. Workbench; 2. Mounting bracket; 3. Hot air blower; 4. Fixing rod; 5. Display screen; 601. Straight slide rail one; 602. Sliding block; 603. Support column; 604. Positioning rod one; 605. Positioning hole one; 606. Straight slide rail two; 607. Sliding plate; 608. Positioning hole two; 609. Positioning rod two; 701. Connecting rod one; 702. Circular slide rail one; 703. Turntable; 704. Connecting shaft; 705. Connecting rod two; 706. Circular slide rail two; 707. Electric slider; 708. Mounting frame; 709. Electronic magnifying glass; 710. Socket; 711. Fixing plate; 712. Threaded rod; 713. Rotating rod; 714. Clamping plate one; 715. Clamping plate two. Detailed Implementation

[0030] Example 1

[0031] like Figures 1-3 As shown, the present invention proposes a device for testing the crack resistance performance of fire-retardant coatings, comprising a workbench 1, a mounting frame 2 mounted on the top of the workbench 1, a hot air blower 3 mounted inside the mounting frame 2, a fixing rod 4 mounted on the side of the mounting frame 2, a display screen 5 mounted on the fixing rod 4 at the end away from the mounting frame 2, a moving positioning mechanism, and a clamping observation mechanism. The top of the display screen 5 is provided with a wiring port.

[0032] The mobile positioning mechanism is located on the top of the workbench 1 and is used to move the board to be tested to a suitable testing position;

[0033] The clamping and observation mechanism includes a clamping component and an observation component. The clamping and observation mechanism is located on top of the moving and positioning mechanism. It is used to clamp the test board and control the observation component to continuously rotate and observe the changes of the test board. The observation component is an electronic magnifying glass. The electronic magnifying glass 709 rotates around the test board under the drive of the clamping and observation mechanism. The side of the electronic magnifying glass 709 is provided with a wire insertion port 710, which is used to connect a wire. The other end of the wire is connected to the wiring port on the display screen 5.

[0034] The mobile positioning mechanism includes a first linear slide rail 601, a second linear slide rail 606, a sliding block 602, a support column 603, a sliding plate 607, and a positioning assembly. The first linear slide rail 601 is located on the top of the worktable 1. The sliding block 602 is slidably mounted on the first linear slide rail 601. The support column 603 is located on top of the sliding block 602. The second linear slide rail 606 is located on top of the support column 603. The sliding plate 607 is slidably mounted on the second linear slide rail 606, controlling the sliding block 602's movement on the linear slide rail. The sliding plate 601 can change the distance between the test plate and the hot air blower 3, thereby controlling the drying intensity of the hot air blower 3 and simulating the changes of the protective coating on the test plate under different light intensities. Controlling the sliding plate 607 to slide within the straight slide rail 606 can change the position of the test plate, thereby performing crack resistance testing on the test plate at different positions. The positioning component is set on the straight slide rail 601 and is used to fix the sliding block 602 and the sliding plate 607 after they have moved to the appropriate position. The positioning assembly includes a positioning hole 605, a positioning hole 608, a positioning rod 604, and a positioning rod 609. The positioning hole 605 is located on the straight slide rail 601, and the positioning hole 608 is located on the straight slide rail 606. The positioning rod 604 is engaged in the positioning hole 605, and the positioning rod 609 is engaged in the positioning hole 608. When the positioning rod 604 is pulled out of the positioning hole 605, the sliding block 602 can be moved. After the sliding block 602 moves to the appropriate position, the positioning rod 604 is re-engaged into the positioning hole 605 for fixation. The operation of the positioning rod 609 is the same as that of the positioning rod 604.

[0035] Example 2

[0036] like Figures 4-5 As shown, this utility model proposes a crack resistance testing device for fire-retardant coatings. Compared with Embodiment 1, this embodiment details the structure of the clamping and observation mechanism.

[0037] The clamping and observation mechanism includes a rotating clamping assembly and an observation assembly; the rotating clamping assembly is located on the side of the straight slide rail 606 and is used to clamp the test board and adjust the detection angle of the test board; the observation assembly is located on the top of the rotating clamping assembly and is used to rotate around the test board for observation during the detection process. The rotating clamping assembly includes a connecting rod 701, an annular slide rail 702, a turntable 703, and a fixing plate 711. The connecting rod 701 is located on the side of the straight slide rail 606, the annular slide rail 702 is located at the end of the connecting rod 701 away from the straight slide rail 606, the turntable 703 is rotatably mounted on the annular slide rail 702, and the fixing plate 711 is located on the side of the turntable 703 away from the annular slide rail 702. A threaded rod 712 is threadedly connected to the inner side of the fixing plate 711. A rotating rod 713 is located at the top of the threaded rod 712, and a clamping plate 714 is located at the bottom of the threaded rod 712. A clamping plate 715 is located below the clamping plate 714. The turntable 703 has multiple positioning holes. A sliding rod is slidably mounted inside each positioning hole, and a spring is mounted on the outer side of the sliding rod. The sliding rod is located away from the positioning hole. One end of the slide bar is equipped with a pull rod, and a fixed block is slidably installed on the section of the slide bar near the pull rod. The end of the fixed block away from the slide bar is connected to the outer side of the annular slide rail 702. The side of the clamping plate 715 is connected to the side of the turntable 703. By rotating the rotating rod 713, the threaded rod 712 moves upward on the fixed plate 711, thereby driving the clamping plate 714 to move upward. The plate to be tested is placed on the clamping plate 715. Then, the rotating rod 713 is rotated in the opposite direction to drive the threaded rod 712 to rotate. The threaded rod 712 drives the clamping plate 714 to move downward, thereby clamping the plate to be tested. Then, the sliding rod is pulled up by the pull rod to disengage it from the positioning hole 3. At this time, the turntable 703 can be rotated. After rotating to a suitable detection angle, the pull rod is released. Under the action of the spring, the sliding rod is re-clamped into the positioning hole 3 at this position, thereby fixing the position of the plate to be tested for easy detection. The observation assembly includes a connecting shaft 704, a second connecting rod 705, a second annular slide rail 706, and an electric slider 707. The connecting shaft 704 is located at the axis of the turntable 703, and its outer side is rotatably connected to the inner side of the first annular slide rail 702. The second connecting rod 705 is located at the end of the connecting shaft 704 away from the turntable 703. The second annular slide rail 706 is located at the top of the second connecting rod 705. The electric slider 707 is slidably mounted on the second annular slide rail 706. The side of the electric slider 707 is provided with… Mounting frame 708, the inner side of which is connected to the outer side of electronic magnifying glass 709. When the test board is being tested, the electric slider 707 is activated and rotates. The annular slide rail 706 is elliptical, so the movement trajectory of the electric slider 707 is elliptical. Since the mounting frame 708 is inclined, the rotation of the electric slider 707 can drive the electronic magnifying glass 709 to illuminate every part of the test board, and the changes of the test board are displayed on the display screen 5, making the observation more comprehensive and detailed.

[0038] In summary, when using this utility model, the wire is connected to the plug port 710 and the wiring port, so that the image of the electronic magnifying glass 709 can be displayed on the display screen 5. Then, the threaded rod 712 is rotated by the rotating rod 713, and the threaded rod 712 moves upward on the fixed plate 711, thereby driving the clamping plate 714 to move upward, placing the test plate on the clamping plate 715. Then, the rotating rod 713 is rotated in the opposite direction to drive the threaded rod 712 to rotate, and the threaded rod 712 drives the clamping plate 714 to move downward, thereby clamping the test plate. Then, the sliding rod is pulled up by the pull rod to disengage it from the positioning hole 3, and the turntable 703 is rotated. After rotating to a suitable detection angle, the pull rod is released, and the sliding rod is re-clamped into the positioning hole 3 under the action of the spring. After the detection angle of the test plate is adjusted, The sliding block 602 and the sliding plate 607 are controlled to slide within the straight slide rail 601 and the straight slide rail 606 respectively, thereby controlling the position of the test plate. After the position of the test plate is adjusted, the positioning rod 604 and the positioning rod 609 are inserted into the positioning hole 605 and the positioning hole 608 respectively to fix the position. Then, the hot air blower 3, the electric slider 707 and the electronic magnifying glass 709 are started. The electronic magnifying glass 709 can rotate with the test plate, so the observation head can always be facing the test plate. The electric slider 707 slides within the annular slide rail 706, and the electronic magnifying glass 709 rotates with the electric slider 707, thereby illuminating every part of the test plate and displaying the changes of the test plate on the display screen 5, making the observation more comprehensive and detailed.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for testing the crack resistance performance of fire-retardant coatings, comprising a workbench (1), a mounting frame (2) disposed on the top of the workbench (1), a hot air blower (3) disposed inside the mounting frame (2), a fixing rod (4) disposed on the side of the mounting frame (2), and a display screen (5) disposed on the end of the fixing rod (4) away from the mounting frame (2); characterized in that, Also includes: The mobile positioning mechanism is located on the top of the workbench (1) and is used to move the board to be tested to a suitable testing position. The clamping and observation mechanism includes a clamping component and an observation component. The clamping and observation mechanism is located on the top of the moving positioning mechanism and is used to clamp the test board and control the observation component to continuously rotate and observe the changes of the test board. The observation component is an electronic magnifying glass. The electronic magnifying glass (709) rotates around the test board under the drive of the clamping and observation mechanism. The side of the electronic magnifying glass (709) is provided with a wire insertion port (710). The wire insertion port (710) is used to connect wires. The other end of the wires is connected to the wiring port on the display screen (5).

2. The crack resistance testing device for fire-retardant coatings according to claim 1, characterized in that, The mobile positioning mechanism includes a first linear slide rail (601), a second linear slide rail (606), a sliding block (602), a support column (603), a sliding plate (607), and a positioning component; A straight slide rail 1 (601) is set on the top of the workbench (1), a sliding block (602) is slidably set on the straight slide rail 1 (601), a support column (603) is set on the top of the sliding block (602), a straight slide rail 2 (606) is set on the top of the support column (603), and a sliding plate (607) is slidably set on the straight slide rail 2 (606); The positioning component is mounted on the straight slide rail (601) and is used to fix the sliding block (602) and the sliding plate (607) after they have moved to the appropriate position.

3. The crack resistance testing device for fire-retardant coatings according to claim 2, characterized in that, The positioning assembly includes positioning hole one (605), positioning hole two (608), positioning rod one (604) and positioning rod two (609); Positioning hole one (605) is set on straight slide rail one (601), positioning hole two (608) is set on straight slide rail two (606), positioning rod one (604) is engaged in positioning hole one (605), and positioning rod two (609) is engaged in positioning hole two (608).

4. The crack resistance testing device for fire-retardant coatings according to claim 2, characterized in that, The clamping and observation mechanism includes a rotating clamping assembly and an observation assembly; The rotating clamping assembly is located on the side of the straight slide rail 2 (606) to clamp the test board and adjust the detection angle of the test board; The observation component is located on top of the rotating clamping component and is used to rotate around the test plate for observation during the testing process.

5. The crack resistance testing device for fire-retardant coatings according to claim 4, characterized in that, The rotating clamping assembly includes a connecting rod (701), an annular slide rail (702), a turntable (703), and a fixing plate (711); Connecting rod one (701) is disposed on the side of straight slide rail two (606), annular slide rail one (702) is disposed at the end of connecting rod one (701) away from straight slide rail two (606), turntable (703) is rotatably disposed on annular slide rail one (702), fixing plate (711) is disposed on the side of turntable (703) away from annular slide rail one (702), and threaded rod (712) is threadedly connected to the inner side of fixing plate (711). A rotating rod (713) is provided at the top of the turntable (703), a clamping plate (714) is provided at the bottom of the threaded rod (712), a clamping plate (715) is provided below the clamping plate (714), a positioning hole (3) is provided on the side of the turntable (703), a plurality of positioning holes (3) are provided, a sliding rod is slidably provided on the inner side of the positioning hole (3), a spring is provided on the outer side of the sliding rod, a pull rod is provided at the end of the sliding rod away from the positioning hole (3), and a fixing block is slidably provided on the section of the sliding rod close to the pull rod.

6. The crack resistance testing device for fire-retardant coatings according to claim 5, characterized in that, The observation assembly includes a connecting shaft (704), a second connecting rod (705), a second annular slide rail (706), and an electric slider (707); A connecting shaft (704) is located at the center of the turntable (703). The outer side of the connecting shaft (704) is rotatably connected to the inner side of the first annular slide rail (702). A second connecting rod (705) is located at the end of the connecting shaft (704) away from the turntable (703). A second annular slide rail (706) is located at the top of the second connecting rod (705). An electric slider (707) is slidably mounted on the second annular slide rail (706). An installation frame (708) is provided on the side of the electric slider (707).

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