Testing device for fireproof coating of thick steel structure

Abstract

The utility model provides a testing device for a fireproof coating of a thick steel type structure, which comprises a heating part and a testing bin which are arranged above and used for detecting a test piece, one side of the testing bin is fixedly connected with a rotating motor, the power output end of the rotating motor is fixedly connected with a detection rod, one end of the detection rod is fixedly connected with a detection top plate, and the other end of the detection rod is fixedly connected with a detection platform. One end of the detection top plate is fixedly connected with a translation assembly, one end of the translation assembly is slidably connected with a distance measuring part, the translation assembly comprises an electric screw rod and a longitudinal moving slide rail, one end of the electric screw rod is fixedly connected to the lower side of the detection top plate, and one side of the longitudinal moving slide rail is in threaded connection with the movable end of the electric screw rod; an internal partition plate is fixedly connected into the test bin; the distance between the tested coating surface and the distance measuring part is detected through the distance measuring part, if the distance is smaller than the distance before testing, it is indicated that the coating expands during testing, and if the coating expands excessively, it is indicated that the coating is unqualified.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for fire-retardant coatings for thick steel structures, and in particular to a testing device for fire-retardant coatings for thick steel structures. Background Technology

[0002] Thick steel structure fireproof coating is a thick-film fireproof coating designed and manufactured for fire protection of Class I fire-resistant steel structure load-bearing components. After being sprayed onto the surface of the steel component, this coating forms a fire-resistant and heat-insulating protective layer when exposed to fire, relying on its non-combustible nature and low thermal conductivity. This slows down the direct attack of fire on the load-bearing components, thereby effectively improving the fire resistance limit of the steel structure. The spray thickness is generally 20-50mm, and it can withstand 0.5-3 hours of burning. However, if the thick steel structure fireproof coating expands excessively during the burning process, it will seriously affect the fireproof performance of the coating. Therefore, it is necessary to test the degree of expansion of the coating after heating.

[0003] A search revealed a Chinese patent publication number CN209911266U, which discloses a furnace for testing the heat insulation efficiency of fireproof coatings. The furnace includes a furnace body, a combustion device, and an air outlet adjustment device. The furnace body has a combustion chamber, and the top of the furnace body has a specimen placement assembly that extends into the combustion chamber. The combustion device includes an oil tank, an oil pump, a combustion-supporting blower, and a burner. The nozzle of the burner is connected to the air inlet of the furnace body, and the air inlet of the burner is connected to the combustion-supporting blower through an air inlet pipe.

[0004] To address the lack of functionality in the aforementioned technologies to detect the coating thickness on the test specimen after a combustion test, thus revealing the extent of coating expansion after heating, a testing device for fire-retardant coatings on thick steel structures is proposed. Utility Model Content

[0005] In view of this, the present invention aims to provide a testing device for fire-retardant coatings for thick steel structures, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0006] The technical solution of this utility model embodiment is implemented as follows: it includes a heating component and a test chamber installed on the top for detecting test pieces. A rotary motor is fixedly connected to one side of the test chamber. A detection rod is fixedly connected to the power output end of the rotary motor. A detection top plate is fixedly connected to one end of the detection rod. A translation component is fixedly connected to one end of the detection top plate. A distance measuring component is slidably connected to one end of the translation component.

[0007] In some embodiments, the translation component includes an electric lead screw and a longitudinal slide rail. One end of the electric lead screw is fixedly connected to the lower side of the detection top plate, and one side of the longitudinal slide rail is threadedly connected to the movable end of the electric lead screw. The ranging component is slidably connected to the lower part of the longitudinal slide rail.

[0008] In some embodiments, an internal partition is fixedly connected inside the test chamber, and a movable partition is rotatably connected to one end of the internal partition. A spring is fixedly connected to one end of both the movable partition and the internal partition.

[0009] In some embodiments, an observation window is fixedly connected to one side of the test chamber, and a door is rotatably connected to the top of the test chamber.

[0010] In some embodiments, an exhaust pipe is fixedly connected above the test chamber, and an exhaust gas detection component and a filter box are fixedly connected to one end of the exhaust pipe.

[0011] In some embodiments, one end of the internal partition is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a clamping plate, and one end of the clamping plate is fixedly connected to the test piece.

[0012] In some embodiments, a limiting slider is slidably connected to one end of the clamping plate, and one end of the limiting slider is fixedly connected to one end of the clamping plate by a spring. A clamping shaft and a spring are fixedly connected above the clamping plate. A clamping block is slidably connected to one end of the limiting slider. A spring is fixedly connected below the clamping block. A positioning sleeve is rotatably connected to one end of the clamping shaft, and a limiting boss is fixedly connected to one end of the clamping block.

[0013] In some embodiments, a rotating gear is fixedly connected to one end of the rotating shaft on one side, and a telescopic rod is fixedly connected to one end of the internal partition, with the movable end of the telescopic rod engaging with the rotating gear.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] A testing device for fire-retardant coatings for thick steel structures uses a distance measuring component to detect the distance between the coating surface and the measuring component after testing. If the distance is less than the distance before testing, it indicates that the coating has expanded during testing. If the expansion is too large, it indicates that the coating is unqualified.

[0016] A testing device for fire-retardant coatings on thick steel structures, which allows the ranging component to be moved to the other side when heated, and prevents the ranging component from being damaged by high temperature through internal partitions and movable partitions.

[0017] A testing device for fire-retardant coatings on thick steel structures is provided. After the heating test, the telescopic rod can extend and drive the test piece to rotate through the toothed rod at the movable end, eliminating the need for manual flipping and preventing burns.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is the main view of the present invention.

[0021] Figure 2 This is a structural diagram of the internal structure of the test chamber of this utility model;

[0022] Figure 3 This is a structural diagram of the clamping plate of this utility model;

[0023] Figure 4 This is a partial structural diagram of the internal partition of this utility model;

[0024] Figure 5 This is a structural diagram of the detection top plate of this utility model.

[0025] Figure label:

[0026] 1. Heating component; 2. Test chamber; 3. Observation window; 4. Door; 5. Exhaust pipe; 6. Exhaust gas detection assembly; 7. Filter box; 8. Rotary motor; 9. Internal partition; 10. Movable partition; 11. Detection rod; 12. Detection top plate; 13. Clamping plate; 14. Rotating shaft; 15. Rotating gear; 16. Telescopic rod; 17. Test piece; 18. Limiting slider; 19. Spring 1; 20. Clamping block; 21. Positioning sleeve; 22. Spring 2; 23. Electric lead screw; 24. Longitudinal slide rail; 25. Distance measuring component; 26. Limiting boss; 27. Clamping shaft; 28. Spring 3. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Example 1

[0029] like Figure 1-5As shown, a testing device for fire-retardant coatings on thick steel structures includes a heating component 1 and a testing chamber 2 mounted on top for testing a test piece 17. The test piece 17 is a steel plate coated with a fire-retardant coating on thick steel structures. A rotary motor 8 is fixedly connected to one side of the testing chamber 2. A detection rod 11 is fixedly connected to the power output end of the rotary motor 8. A detection top plate 12 is fixedly connected to one end of the detection rod 11. A translation component is fixedly connected to one end of the detection top plate 12. A distance measuring component 25 is slidably connected to one end of the translation component.

[0030] The translation component includes an electric lead screw 23 and a longitudinal slide rail 24. One end of the electric lead screw 23 is fixedly connected to the lower side of the detection top plate 12, and one side of the longitudinal slide rail 24 is threadedly connected to the movable end of the electric lead screw 23. The ranging component 25 is slidably connected to the lower part of the longitudinal slide rail 24.

[0031] The test chamber 2 is made of fire-resistant and heat-insulating material to prevent users from being burned when they come into contact with the outside. The heating component 1 has a protruding flame nozzle on top, which can heat the test piece 17 on top. After the test is completed, the test piece 17 is flipped over, and then the rotating motor 8 works to move the detection top plate 12 directly above the test piece 17. The distance measuring component 25 is preferably a laser rangefinder, which can detect the distance between the paint surface after the test and the distance measuring component 25. If the distance is less than the distance before the test, it means that the paint has expanded during the test. If the expansion is too large, it means that the paint is unqualified.

[0032] At the same time, the electric lead screw 23 and the longitudinal slide rail 24 can drive the ranging component 25 to move horizontally and vertically to perform multi-point detection, which can detect the expansion of different parts.

[0033] In this embodiment, an internal partition 9 is fixedly connected inside the test chamber 2, and a movable partition 10 is rotatably connected to one end of the internal partition 9. The internal partition 9 and the movable partition 10 are preferably supported by heat insulation material, and a spring 22 is fixedly connected to one end of the movable partition 10 and the internal partition 9.

[0034] When testing, the detection rod 11 rotates to the other side of the internal partition 9 to prevent the ranging component 25 from being damaged by high temperature. When the detection rod 11 rotates, it will push open the movable partition 10 to allow the detection rod 11 to pass through.

[0035] In this embodiment, an observation window 3 is fixedly connected to one side of the test chamber 2, and a door 4 is rotatably connected to the top of the test chamber 2. The observation window 3 is preferably fire-resistant glass, which allows observation of the internal situation during testing. The door 4 can be opened from above, making it convenient to take out and put in the test piece 17.

[0036] In this embodiment, an exhaust pipe 5 is fixedly connected above the test chamber 2, and an exhaust gas detection component 6 and a filter box 7 are fixedly connected to one end of the exhaust pipe 5.

[0037] The exhaust pipe 5 can be connected to the outside to prevent combustion gases from polluting the indoor air. The exhaust gas detection component 6 consists of multiple detection parts that can detect the content of carbon dioxide, carbon monoxide, ammonia, and hydrogen chloride in the combustion exhaust gas. The production of excessive harmful gases indicates that the coating is unqualified.

[0038] In this embodiment, one end of the internal partition 9 is rotatably connected to a rotating shaft 14, one end of the rotating shaft 14 is fixedly connected to a clamping plate 13, and one end of the clamping plate 13 is fixedly connected to the test piece 17.

[0039] The clamping plate 13 is used to fix the test piece 17, and after the heating test is completed, the test piece 17 can be flipped over by the rotating shaft 14 to check whether expansion occurs.

[0040] In this embodiment: the test chamber 2 is made of fire-resistant and heat-insulating material to prevent users from being burned when they come into contact with the outside. The heating component 1 has a protruding flame nozzle on top, which can heat the test piece 17 on top. After the test is completed, the test piece 17 is flipped over, and then the rotating motor 8 works to move the detection top plate 12 directly above the test piece 17. The distance measuring component 25 is preferably a laser rangefinder, which can detect the distance between the paint surface after the test and the distance measuring component 25. If the distance is less than the distance before the test, it means that the paint has expanded during the test. If the expansion is too large, it means that the paint is unqualified.

[0041] At the same time, the electric lead screw 23 and the longitudinal slide rail 24 can drive the ranging component 25 to move translatively and longitudinally to perform multi-point detection, which can detect the expansion of different parts;

[0042] When testing, the detection rod 11 rotates to the other side of the internal partition 9 to prevent the ranging component 25 from being damaged by high temperature. When the detection rod 11 rotates, it will push open the movable partition 10 to allow the detection rod 11 to pass through.

[0043] The observation window 3 allows for observation of the interior during testing, and the hatch 4 can be opened from above for easy access to the test piece 17.

[0044] The exhaust pipe 5 can be connected to the outside to prevent combustion gases from polluting the indoor air. The exhaust gas detection component 6 is composed of multiple detection components, which can detect the content of carbon dioxide, carbon monoxide, ammonia and hydrogen chloride in the combustion exhaust gas. The production of excessive harmful gases indicates that the paint is unqualified.

[0045] The clamping plate 13 is used to fix the test piece 17, and after the heating test is completed, the test piece 17 can be flipped over by the rotating shaft 14 to check whether expansion occurs. Example 2

[0046] A testing device for fire-retardant coatings on thick steel structures is provided in this embodiment, which is improved upon embodiment 1 as follows: Figure 1-5 As shown,

[0047] In this embodiment, a limiting slider 18 is slidably connected to one end of the clamping plate 13, and one end of the limiting slider 18 is fixedly connected to one end of the clamping plate 13 by a spring 19. A clamping shaft 27 and a spring 28 are fixedly connected above the clamping plate 13. A clamping block 20 is slidably connected to one end of the limiting slider 18, and the spring 28 is fixedly connected below the clamping block 20. A positioning sleeve 21 is rotatably connected to one end of the clamping shaft 27, and a limiting boss 26 is fixedly connected to one end of the clamping block 20.

[0048] When clamping is required, first place the test piece 17 above the clamping plate 13, and then rotate the positioning sleeve 21 to move the clamping block 20 inward to fix the test piece 17. Fixing can be done simply by rotating the positioning sleeve 21, and the clamping speed is faster.

[0049] In this embodiment, a rotating gear 15 is fixedly connected to one end of the rotating shaft 14 on one side, and a telescopic rod 16 is fixedly connected to one end of the internal partition 9. The movable end of the telescopic rod 16 is engaged with the rotating gear 15.

[0050] The telescopic rod 16 is preferably an electric type, which can extend after the heating test and drive the test piece 17 to rotate through the toothed rod at the movable end, without the need for manual flipping, thus preventing burns.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A testing device for fire-retardant coatings on thick steel structures, comprising a heating element (1) and a testing chamber (2) mounted on top for testing a test specimen (17), characterized in that: A rotary motor (8) is fixedly connected to one side of the test chamber (2). A detection rod (11) is fixedly connected to the power output end of the rotary motor (8). A detection top plate (12) is fixedly connected to one end of the detection rod (11). A translation component is fixedly connected to one end of the detection top plate (12). A distance measuring component (25) is slidably connected to one end of the translation component.

2. The testing device for fire-retardant coatings on thick steel structures according to claim 1, characterized in that: The translation component includes an electric lead screw (23) and a longitudinal slide rail (24). One end of the electric lead screw (23) is fixedly connected to the lower side of the detection top plate (12), and one side of the longitudinal slide rail (24) is threadedly connected to the movable end of the electric lead screw (23). The ranging component (25) is slidably connected to the lower side of the longitudinal slide rail (24).

3. The testing device for fire-retardant coatings on thick steel structures according to claim 2, characterized in that: The test chamber (2) is fixedly connected to an internal partition (9), and a movable partition (10) is rotatably connected to one end of the internal partition (9). A spring (22) is fixedly connected to one end of the movable partition (10) and the internal partition (9).

4. The testing device for fire-retardant coatings on thick steel structures according to claim 3, characterized in that: The test chamber (2) is fixedly connected to one side of an observation window (3), and the test chamber (2) is rotatably connected to a door (4) on the top.

5. A testing device for fire-retardant coatings on thick steel structures according to claim 4, characterized in that: An exhaust pipe (5) is fixedly connected above the test chamber (2), and an exhaust gas detection component (6) and a filter box (7) are fixedly connected to one end of the exhaust pipe (5).

6. A testing device for fire-retardant coatings on thick steel structures according to claim 5, characterized in that: One end of the internal partition (9) is rotatably connected to a rotating shaft (14), and one end of the rotating shaft (14) is fixedly connected to a clamping plate (13). One end of the clamping plate (13) is fixedly connected to the test piece (17).

7. A testing device for fire-retardant coatings on thick steel structures according to claim 6, characterized in that: One end of the clamping plate (13) is slidably connected to a limiting slider (18). One end of the limiting slider (18) is fixedly connected to one end of the clamping plate (13) by a spring (19). A clamping shaft (27) and a spring (28) are fixedly connected above the clamping plate (13). A clamping block (20) is slidably connected to one end of the limiting slider (18). The spring (28) is fixedly connected below the clamping block (20). A positioning sleeve (21) is rotatably connected to one end of the clamping shaft (27). A limiting boss (26) is fixedly connected to one end of the clamping block (20).

8. A testing device for fire-retardant coatings on thick steel structures according to claim 7, characterized in that: One end of the rotating shaft (14) on one side is fixedly connected to a rotating gear (15), and one end of the internal partition (9) is fixedly connected to a telescopic rod (16), the movable end of the telescopic rod (16) meshing with the rotating gear (15).

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