Anti-cracking performance detection device for non-expansive fireproof coating

Abstract

The utility model discloses an anti-cracking performance detection device for a non-expansive fireproof coating, which relates to the technical field of building equipment and comprises a supporting table, fixing plates are symmetrically mounted on the supporting table, rotating shafts are rotatably connected onto the symmetrically arranged fixing plates, a rotating motor is mounted on the fixing plate positioned on one side of the supporting table, and a groove is formed in the supporting table. A supporting plate is arranged at the upper end of the supporting table, a plurality of fixing rods are evenly installed on the supporting plate at intervals in the circumferential direction, the supporting plate is fixedly connected with the supporting table through the fixing rods, a rotating component used for detecting a plurality of samples at the same time is arranged in the supporting table, and a clamping component used for clamping the samples is arranged in the rotating component. A detection part for detecting a sample is arranged above the supporting plate, and a control panel is mounted on the supporting table. When a sample is cracked or a single sample is detected, the sample can be replaced in real time, so that the detection time is shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, in particular to an anti-cracking performance detection device for non-expansion fire retardant coatings. Background Art

[0002] Non-intumescent fire-retardant coatings, primarily composed of inorganic insulating materials, do not expand in the presence of fire and possess excellent inherent thermal insulation properties. These coatings are suitable not only for internal steel structures but also for fire protection of exterior walls, roofs, basements, and other structural surfaces. They provide additional fire resistance and reduce damage to buildings.

[0003] Before applying paint to building exteriors, roofs, and other areas, sampling and testing are often required to ensure paint quality and prevent future cracking. This focus is on evaluating the paint's crack resistance. Currently, this is primarily assessed by observing samples subjected to external forces and using instrumental testing. However, since most existing testing instruments can only test a single sample, the sample must be replaced and retested after the test is complete, resulting in a time-consuming and inefficient testing process. Utility Model Content

[0004] The purpose of the present utility model is to provide a device for detecting the anti-cracking performance of non-expanding fire retardant coatings, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A device for detecting crack resistance of non-expanding fire retardant coatings, comprising:

[0007] The support platform has a symmetrically installed fixed plate, and the fixed plate is symmetrically arranged with a rotating shaft rotatably connected. A rotating motor is installed on the fixed plate located on one side of the support platform, and the rotating shaft is fixedly connected to the output end of the rotating motor. A groove is provided on the support platform, and a support plate is provided on the upper end of the support platform. A number of fixed rods are evenly spaced along the circumferential direction on the support plate, and the support plate is fixedly connected to the support platform through the fixed rods. A collecting tank is provided on the support platform, and a rotating component for simultaneously detecting multiple samples is provided in the support platform, and a clamping component for clamping the sample is provided in the rotating component. A detection component for detecting the sample is provided above the support plate, and a control panel is installed on the support platform.

[0008] When it is necessary to test the samples, multiple samples can be clamped by the clamping component, and then the rotating motor is started through the control panel. The starting of the rotating motor will transmit power to the rotating component, causing the rotating component to rotate, so that multiple samples can be tested through the cooperation of the rotating component and the testing component. When a sample is cracked or a single sample is tested, it can be replaced in real time, thereby reducing the testing time and improving the testing efficiency.

[0009] A further improvement of the technical solution of the present utility model is that: the rotating part includes a base plate, the base plate is located inside the groove, a transmission shaft is fixedly connected to one side of the base plate, the transmission shaft is rotatably connected to the support platform, bevel teeth are installed on the transmission shaft, bevel teeth are installed on the rotating shaft, the bevel teeth are meshed with each other, support rods are installed at even intervals along the circumferential direction on the outer side of the base plate, and a placement platform is installed on the end of the support rod away from the base plate.

[0010] The above technical solution is adopted. In this solution, when the sample needs to be tested, the rotating motor is started to drive the rotating shaft fixedly connected to its output end to rotate, thereby driving the bevel gear fixedly connected to the rotating shaft to rotate. Because the bevel gears are engaged with each other, the power of the rotating motor will be transmitted to the transmission shaft through the rotating shaft and the mutually engaged bevel gears, thereby driving the base plate to rotate. The rotation of the base plate will drive the placement table to rotate through the support rod fixedly connected to it, thereby achieving the purpose of facilitating sample replacement when a sample is cracked or a single sample test is completed.

[0011] A further improvement of the technical solution of the present utility model is that: the clamping component includes a gear and several racks, the placement table is hollow inside, a fixed shaft is installed in the placement table, the gear is rotatably connected to the fixed shaft, the gear is engaged with several racks respectively, a clamping plate is installed at one end of the rack, a slide groove is provided at the other end of the rack, several sliding rods are fixedly connected inside the placement table, the sliding rods are slidably connected to the slide groove, an elastic spring is provided on the outside of the slide rod, one end of the elastic spring is fixedly connected to the placement table, and the other end of the elastic spring is fixedly connected to the rack.

[0012] In this technical solution, when a sample needs to be clamped, any one of the clamping plates is moved. This plate will drive the rack fixed to it to move. At this time, the elastic spring is in a stretched state, and the rack will drive the gear meshing with it to rotate, thereby driving the other rack meshing with the gear to move, thereby moving the clamping plate outward. The sample is then placed on the placement table. At this time, the clamping plate is released, and the elastic spring returns to its original position, driving the clamping plate to clamp the sample. By clamping the sample with the gear and rack, the purpose of convenient and timely sample replacement can be achieved.

[0013] A further improvement of the technical solution of the present utility model is that: the detection component includes a first shell, a second shell and an adjustment assembly, the first shell is fixedly connected to the support plate, the first shell is slidably connected to the second shell, a feed port is provided at the upper end of the second shell, a top hopper is rotatably connected inside the second shell, a starting motor is installed on the outside of the second shell, the output end of the starting motor is fixedly connected to the top hopper, a discharge port is provided on one side of the second shell, a first detection tube is installed on the side of the second shell close to the discharge port, and a second detection tube is installed below the first detection tube.

[0014] The above technical solution adopts this solution. In this solution, when testing is required, the placement table moves to the bottom of the second detection tube under the force of the rotating motor, and then the starting motor is started. The starting motor drives the upper hopper fixedly connected to its output end to rotate. The rotation of the upper hopper transfers a single material from the feed port to the discharge port, and then moves along the first and second detection tubes, thereby achieving external force impact on the sample to test the sample's crack resistance. After the impact on the sample, the material will pass through the second detection tube and the sample to rest on the sample surface. The sample is then moved under the force of the rotating motor and the material will fall into the collection tank for collection. Thus, the sample can be tested.

[0015] A further improvement of the technical solution of the present utility model is that: the adjustment component includes a movable shaft, the movable shaft is located at the lower end of the second shell and is fixedly connected to the second shell, a movable groove is provided on the second shell, a movable plate is slidably connected to the movable shaft, the movable plate is slidably connected to the movable groove, a pressure spring is provided on the outside of the movable shaft, one end of the pressure spring is fixedly connected to the second shell, and the other end of the pressure spring is fixedly connected to the movable plate, an installation groove is provided on the first shell, the movable plate is used in conjunction with the installation groove, a matching tube is installed at the lower end of the second detection tube, an extension tube is provided below the second detection tube, and the extension tube is threadedly connected to the matching tube.

[0016] The above-mentioned technical solution is adopted. In this solution, when it is necessary to test the sample with different impact forces, the movable plate can be moved so that the pressure spring is in a compressed state, and then the height of the second shell is adjusted. When it is adjusted to the appropriate angle, the movable plate is released. At this time, the pressure spring is reset, thereby driving the movable plate to reset. At this time, the movable plate will cooperate with the mounting groove to fix the second shell inside the first shell. When adjusting the height of the second shell, the length of the extension tube is adjusted by rotating the extension tube so that it can be used in conjunction with the second shell to realize the detection of different impact forces.

[0017] A further improvement of the technical solution of the present utility model is that the inner diameter of the second detection tube is the same as the inner diameter of the extension tube.

[0018] By adopting the above technical solution, the inner diameter of the extension tube is set to be the same as the inner diameter of the second detection tube, so as to avoid the material being affected during the operation.

[0019] A further improvement of the technical solution of the present utility model is that a limiting block is installed between adjacent supporting rods.

[0020] The above technical solution is adopted, in which a limit block is set to prevent the material from falling into the collection trough and affecting the operation of the device. The limit block can limit the material to ensure that the material can fall into the collection trough.

[0021] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0022] 1. The utility model provides a crack prevention performance testing device for non-expanding fire retardant coatings. When samples need to be tested, multiple samples can be clamped by a clamping component, and then the rotating motor is started through the control panel. The starting of the rotating motor will transmit power to the rotating component, causing the rotating component to rotate, so that multiple samples can be tested through the cooperation of the rotating component and the testing component. When a sample is cracked or a single sample is tested, it can be replaced in real time, thereby reducing the testing time and improving the testing efficiency.

[0023] 2. The utility model provides a crack prevention performance testing device for non-expanding fire retardant coatings. When a sample needs to be tested, the rotating motor is started to drive the rotating shaft fixedly connected to its output end to rotate, thereby driving the bevel gear fixedly connected to the rotating shaft to rotate. Because the bevel gears are engaged with each other, the power of the rotating motor is transmitted to the transmission shaft through the rotating shaft and the mutually engaged bevel gears, thereby driving the base plate to rotate. The rotation of the base plate drives the placement table to rotate through the support rod fixedly connected to it, thereby achieving the purpose of facilitating sample replacement when a sample cracks or a single sample test is completed.

[0024] 3. The present invention provides a device for testing the crack resistance of non-expanding fire retardant coatings. When a sample needs to be clamped, one clamping plate is moved at random. This plate drives the rack fixed to it to move. At this time, the elastic spring is in a stretched state, and the rack drives the gear meshing with it to rotate, thereby driving the other rack meshing with the gear to move, thereby moving the clamping plate outward. The sample is then placed on the placement table. The clamping plate is then released, and the elastic spring returns to its original position, driving the clamping plate to clamp the sample. By clamping the sample through the coordinated action of the rack and gear, the purpose of convenient and timely sample replacement can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a first structural diagram of the utility model;

[0027] Figure 2 This is a second structural diagram of the present utility model;

[0028] Figure 3 This is a schematic diagram of the collecting tank structure of the present utility model;

[0029] Figure 4 This is a schematic diagram of the partial structure of the rotating component of the present utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0031] Figure 6 This is a schematic diagram of the cross-sectional structure of the rotating component of the present utility model;

[0032] Figure 7 This is a schematic diagram of the local structure of the detection component of the utility model;

[0033] Figure 8 This is a schematic diagram of the bevel gear structure of the present utility model.

[0034] In the figure: 1. Support platform; 2. Fixed plate; 3. Rotating shaft; 4. Rotating motor; 5. Groove; 6. Support plate; 7. Fixed rod; 8. Collecting trough; 9. Control panel; 10. Bottom plate; 11. Transmission shaft; 12. Bevel gear; 13. Support rod; 14. Placement platform; 15. Gear; 16. Rack; 17. Clamping plate; 18. Slide rod; 19. Elastic spring; 20. First shell; 21. Second shell; 22. Hopper; 23. Starting motor; 24. First detection tube; 25. Second detection tube; 26. Moving shaft; 27. Moving groove; 28. Moving plate; 29. ​​Pressure spring; 30. Mounting groove; 31. Matching tube; 32. Extension tube; 33. Limit block. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the embodiments:

[0036] Example

[0037] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model provides a crack resistance detection device for non-expanding fire retardant coatings, comprising:

[0038] The support platform 1 includes a fixed plate 2 symmetrically installed on the support platform 1, a rotating shaft 3 is symmetrically arranged on the fixed plate 2 and is rotatably connected, a rotating motor 4 is installed on the fixed plate 2 located on one side of the support platform 1, and the rotating shaft 3 is fixedly connected to the output end of the rotating motor 4, a groove 5 is provided on the support platform 1, a support plate 6 is provided on the upper end of the support platform 1, a plurality of fixed rods 7 are evenly spaced along the circumferential direction on the support plate 6, the support plate 6 is fixedly connected to the support platform 1 through the fixed rods 7, a collecting tank 8 is provided on the support platform 1, a rotating component for simultaneously detecting multiple samples is provided in the support platform 1, a clamping component for clamping the sample is provided in the rotating component, a detection component for detecting the sample is provided above the support plate 6, and a control panel 9 is installed on the support platform 1.

[0039] In this embodiment, when it is necessary to test the samples, multiple samples can be clamped by the clamping component, and then the rotating motor 4 is started through the control panel 9. The starting of the rotating motor 4 will transmit power to the rotating component, causing the rotating component to rotate, so that multiple samples can be tested through the cooperation of the rotating component and the detection component. When a sample is cracked or a single sample is tested, it can be replaced in real time, thereby reducing the detection time and improving the detection efficiency.

[0040] like Figure 1 , Figure 4 , Figure 8 As shown, in this embodiment, preferably, the rotating component includes a base plate 10, the base plate 10 is located inside the groove 5, a transmission shaft 11 is fixedly connected to one side of the base plate 10, the transmission shaft 11 is rotatably connected to the support platform 1, a bevel gear 12 is installed on the transmission shaft 11, and a bevel gear 12 is installed on the rotating shaft 3, and the bevel gears 12 are engaged with each other, and support rods 13 are installed at even intervals along the circumferential direction on the outer side of the base plate 10, and a placement platform 14 is installed on the end of the support rod 13 away from the base plate 10.

[0041] When it is necessary to test the sample, the rotating motor 4 is started to drive the rotating shaft 3 fixedly connected to its output end to rotate, thereby driving the bevel gear 12 fixedly connected to the rotating shaft 3 to rotate. Because the bevel gears 12 are engaged with each other, the power of the rotating motor 4 will be transmitted to the transmission shaft 11 through the rotating shaft 3 and the mutually engaged bevel gears 12, thereby driving the base plate 10 to rotate. The rotation of the base plate 10 will drive the placement table 14 to rotate through the support rod 13 fixedly connected to it, thereby achieving the purpose of facilitating sample replacement when a sample is cracked or a single sample test is completed.

[0042] like Figure 6As shown, preferably, the clamping component includes a gear 15 and a plurality of racks 16. The placement table 14 is hollow inside, and a fixed shaft is installed in the placement table 14. The gear 15 is rotatably connected to the fixed shaft. The gear 15 is respectively engaged with the plurality of racks 16. A clamping plate 17 is installed at one end of the rack 16, and a sliding groove is provided at the other end of the rack 16. A plurality of slide rods 18 are fixedly connected to the inside of the placement table 14, and the slide rods 18 are slidably connected to the sliding groove. An elastic spring 19 is provided on the outside of the slide rod 18, and one end of the elastic spring 19 is fixedly connected to the placement table 14, and the other end of the elastic spring 19 is fixedly connected to the rack 16.

[0043] When a sample needs to be clamped, any one of the clamping plates 17 is moved, and the clamping plate 17 drives the rack 16 fixed to it to move. At this time, the elastic spring 19 is in a stretched state, and the rack 16 drives the gear 15 meshing with it to rotate, thereby driving the other racks 16 meshing with the gear 15 to move, thereby moving the clamping plate 17 outward, and then placing the sample on the placement table 14. At this time, the clamping plate 17 is released, and the elastic spring 19 is reset, thereby driving the clamping plate 17 to clamp the sample. The purpose of clamping the sample by the cooperation of the gear 15 and the rack 16 can be achieved by facilitating the timely replacement of samples.

[0044] like Figure 2 , Figure 5 , Figure 7 As shown, preferably, the detection component includes a first shell 20, a second shell 21 and an adjustment assembly, the first shell 20 is fixedly connected to the support plate 6, the first shell 20 is slidably connected to the second shell 21, a feed port is provided at the upper end of the second shell 21, an upper hopper 22 is rotatably connected inside the second shell 21, a starting motor 23 is installed on the outer side of the second shell 21, the output end of the starting motor 23 is fixedly connected to the upper hopper 22, a discharge port is provided on one side of the second shell 21, a first detection tube 24 is installed on the side of the second shell 21 close to the discharge port, and a second detection tube 25 is installed below the first detection tube 24.

[0045] When testing is required, the placement table 14 moves to the bottom of the second detection tube 25 under the force of the rotating motor 4, and then the starting motor 23 is started. The starting motor 23 drives the upper hopper 22 fixedly connected to its output end to rotate. The rotation of the upper hopper 22 transfers a single material from the feed port to the discharge port, and then moves along the first detection tube 24 and the second detection tube 25, thereby achieving an external force impact on the sample to test the anti-cracking performance of the sample. After the impact on the sample, the material will pass through the second detection tube 25 and the sample and remain stationary on the sample surface. Then, the sample moves under the force of the rotating motor 4 and the material will fall into the collection tank 8 for collection. Thus, the sample is tested.

[0046] like Figure 2 , Figure 3 , Figure 5 As shown, preferably, the adjustment assembly includes a movable shaft 26, which is located at the lower end of the second shell 21 and fixedly connected to the second shell 21, and a movable groove 27 is provided on the second shell 21, and a movable plate 28 is slidably connected to the movable shaft 26, and the movable plate 28 is slidably connected to the movable groove 27. A pressure spring 29 is provided on the outside of the movable shaft 26, one end of the pressure spring 29 is fixedly connected to the second shell 21, and the other end of the pressure spring 29 is fixedly connected to the movable plate 28, and an installation groove 30 is provided on the first shell 20, and the movable plate 28 is used in conjunction with the installation groove 30, and a matching tube 31 is installed at the lower end of the second detection tube 25, and an extension tube 32 is provided below the second detection tube 25, and the extension tube 32 is threadedly connected to the matching tube 31.

[0047] When it is necessary to test the sample with different impact forces, the movable plate 28 can be moved so that the pressure spring 29 is in a compressed state, and then the height of the second shell 21 can be adjusted. When it is adjusted to a suitable angle, the movable plate 28 is released. At this time, the pressure spring 29 is reset, thereby driving the movable plate 28 to reset. At this time, the movable plate 28 will cooperate with the mounting groove 30 to fix the second shell 21 inside the first shell 20. When adjusting the height of the second shell 21, the length of the extension tube 32 is adjusted by rotating the extension tube 32 so that it can be used in conjunction with the second shell 21 to achieve detection of different impact forces.

[0048] like Figure 5 As shown, preferably, the inner diameter of the second detection tube 25 is the same as the inner diameter of the extension tube 32 .

[0049] By setting the inner diameter of the extension tube 32 to be the same as the inner diameter of the second detection tube 25 , it is possible to prevent the material from being affected during operation.

[0050] like Figure 4 As shown, preferably, a limit block 33 is installed between adjacent support rods 13 .

[0051] The purpose of providing the limiting block 33 is to prevent the material from not falling into the collecting trough 8 and thus affecting the operation of the device. The limiting block 33 can limit the material to ensure that the material can fall into the collecting trough 8.

[0052] The following is a detailed description of the working principle of the anti-cracking performance testing device for this non-expanding fire retardant coating.

[0053] like Figure 1-8As shown, when it is necessary to test the sample, multiple samples can be clamped by the clamping component, and then the rotating motor 4 is started through the control panel 9. When the rotating motor 4 is started, the power is transmitted to the rotating component, causing the rotating component to rotate, so that the rotating component and the detection component cooperate to test multiple samples. When a sample is cracked or a single sample is tested, it can be replaced in real time, thereby reducing the testing time and improving the testing efficiency. When it is necessary to test the sample, the rotating motor 4 is started to drive the rotating shaft 3 fixedly connected to its output end to rotate, thereby driving the bevel gear 12 fixedly connected to the rotating shaft 3 to rotate. Because the bevel gears 12 are meshed with each other, the power of the rotating motor 4 is transmitted to the transmission shaft 11 through the rotating shaft 3 and the meshing bevel gears 12, thereby driving the bottom plate 10 to rotate. The rotation of the bottom plate 10 drives the placement table 14 to rotate through the support rod 13 fixedly connected to it, thereby achieving the purpose of facilitating the replacement of samples when a sample is cracked or a single sample is tested. When a sample needs to be clamped, any one of the clamping plates 17 is moved, and the clamping plate 17 drives the rack 16 fixed to it to move. At this time, the elastic spring 19 is in a stretched state, and the rack 16 drives the gear 15 meshing with it to rotate, thereby driving the other racks 16 meshing with the gear 15 to move, thereby moving the clamping plate 17 outward, and then placing the sample on the placement table 14. At this time, the clamping plate 17 is released, and the elastic spring 19 is reset, thereby driving the clamping plate 17 to clamp the sample. The purpose of clamping the sample by the cooperation of the gear 15 and the rack 16 can be achieved by facilitating the timely replacement of samples. When testing is required, the placement table 14 moves to the bottom of the second detection tube 25 under the force of the rotating motor 4, and then the starting motor 23 is started. The starting motor 23 drives the upper hopper 22 fixedly connected to its output end to rotate. The rotation of the upper hopper 22 transfers a single material from the feed port to the discharge port, and then moves along the first detection tube 24 and the second detection tube 25, thereby achieving an external force impact on the sample to test the anti-cracking performance of the sample. After the impact on the sample, the material will pass through the second detection tube 25 and the sample and remain stationary on the sample surface. Then, the sample moves under the force of the rotating motor 4 and the material will fall into the collection tank 8 for collection. Thus, the sample is tested. When it is necessary to test the sample with different impact forces, the movable plate 28 can be moved so that the pressure spring 29 is in a compressed state, and then the height of the second shell 21 can be adjusted. When it is adjusted to a suitable angle, the movable plate 28 is released. At this time, the pressure spring 29 is reset, thereby driving the movable plate 28 to reset. At this time, the movable plate 28 will cooperate with the mounting groove 30 to fix the second shell 21 inside the first shell 20. When adjusting the height of the second shell 21, the length of the extension tube 32 is adjusted by rotating the extension tube 32 so that it can be used in conjunction with the second shell 21 to achieve detection of different impact forces.By setting the inner diameter of the extension tube 32 to be the same as that of the second detection tube 25, the material can be prevented from being affected during operation. The limit block 33 is provided to prevent the material from not falling into the collection tank 8 and affecting the operation of the device. The limit block 33 can limit the material to ensure that it falls into the collection tank 8.

[0054] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A crack resistance testing device for non-expanding fire retardant coatings, characterized in that: include: A support platform (1) is provided, wherein a fixed plate (2) is symmetrically mounted on the support platform (1), a rotating shaft (3) is symmetrically arranged on the fixed plate (2) and is rotatably connected, a rotating motor (4) is mounted on the fixed plate (2) located on one side of the support platform (1), and the rotating shaft (3) is fixedly connected to the output end of the rotating motor (4), a groove (5) is provided on the support platform (1), a support plate (6) is provided at the upper end of the support platform (1), a plurality of fixed rods (7) are evenly spaced along the circumferential direction on the support plate (6), the support plate (6) is fixedly connected to the support platform (1) through the fixed rods (7), a collecting tank (8) is provided on the support platform (1), a rotating component for simultaneously detecting multiple samples is provided in the support platform (1), a clamping component for clamping samples is provided in the rotating component, a detection component for detecting samples is provided above the support plate (6), and a control panel (9) is installed on the support platform (1).

2. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 1, characterized in that: The rotating component comprises a base plate (10), the base plate (10) is located inside the groove (5), a transmission shaft (11) is fixedly connected to one side of the base plate (10), the transmission shaft (11) is rotatably connected to the support platform (1), the transmission shaft (11) is installed with bevel gears (12), the rotating shaft (3) is installed with bevel gears (12), the bevel gears (12) are meshed with each other, support rods (13) are evenly spaced along the circumferential direction on the outer side of the base plate (10), and a placement platform (14) is installed at one end of the support rods (13) away from the base plate (10).

3. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 2, characterized in that: The clamping component includes a gear (15) and a plurality of racks (16). The interior of the placement platform (14) is hollow. A fixed shaft is installed in the placement platform (14). The gear (15) is rotatably connected to the fixed shaft. The gear (15) is meshed with the plurality of racks (16) respectively. A clamping plate (17) is installed at one end of the rack (16). A sliding groove is provided at the other end of the rack (16). A plurality of slide rods (18) are fixedly connected inside the placement platform (14). The slide rods (18) are slidably connected to the sliding groove. An elastic spring (19) is provided on the outside of the slide rod (18). One end of the elastic spring (19) is fixedly connected to the placement platform (14), and the other end of the elastic spring (19) is fixedly connected to the rack (16).

4. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 3, characterized in that: The detection component includes a first shell (20), a second shell (21) and an adjustment assembly, wherein the first shell (20) is fixedly connected to the support plate (6), the first shell (20) is slidably connected to the second shell (21), a feed port is provided at the upper end of the second shell (21), a hopper (22) is rotatably connected inside the second shell (21), a starting motor (23) is installed on the outer side of the second shell (21), an output end of the starting motor (23) is fixedly connected to the hopper (22), a discharge port is provided on one side of the second shell (21), a first detection tube (24) is installed on the side of the second shell (21) close to the discharge port, and a second detection tube (25) is installed below the first detection tube (24).

5. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 4, characterized in that: The adjusting assembly includes a moving shaft (26), the moving shaft (26) is located at the lower end of the second shell (21) and is fixedly connected to the second shell (21), a moving groove (27) is provided on the second shell (21), a moving plate (28) is slidably connected to the moving shaft (26), and the moving plate (28) is slidably connected to the moving groove (27), a pressure spring (29) is provided on the outer side of the moving shaft (26), one end of the pressure spring (29) is fixedly connected to the second shell (21), and the other end of the pressure spring (29) is fixedly connected to the moving plate (28), a mounting groove (30) is provided on the first shell (20), and the moving plate (28) is used in conjunction with the mounting groove (30), a matching tube (31) is installed at the lower end of the second detection tube (25), and an extension tube (32) is provided below the second detection tube (25), and the extension tube (32) is threadedly connected to the matching tube (31).

6. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 5, characterized in that: The inner diameter of the second detection tube (25) is the same as the inner diameter of the extension tube (32).

7. The device for detecting crack resistance of non-expanding fire retardant coating according to claim 6, characterized in that: A limiting block (33) is installed between the adjacent support rods (13).

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