Steel structure fireproof coating thickness measuring device and measuring method

Abstract

The application discloses a kind of steel structure fire-retardant coating thickness measuring device and measuring method, the measuring device includes scale ruler, measuring head, movable needle, flat piece and positioning structure;The measuring head is slidably arranged outside the scale ruler, the flat piece is fixedly connected at the end of the scale ruler, the inside of the flat piece is provided with the through hole that is communicated with the inner cavity of the scale ruler, the non-tips of the movable needle are fixedly connected with the measuring head, the tips of the movable needle are telescopically arranged in the through hole of the flat piece, and when the measuring head is aligned with the 0 scale line of the scale ruler, the tips of the movable needle are flush with the outside surface of the flat piece;The positioning structure is fixedly connected with the flat piece to be tightly fixed on the one side surface of the steel structure to be measured fire-retardant coating thickness.The present application eliminates mechanical error and measurement interference to a great extent by positioning mechanism, and combines spiral clamping and locking assembly to ensure the stability of the device and improve the accuracy of measurement data.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a device and method for measuring the thickness of fireproof coatings on steel structures. Background Technology

[0002] Steel structures are widely used in modern buildings due to their high strength, light weight, and good seismic performance. The thickness of their fire-retardant coating directly affects fire resistance and requires precise measurement. Existing thickness measuring devices such as ultrasonic, magnetic, and eddy current devices have significant drawbacks: large devices are difficult to carry at heights, poor surface adhesion leads to errors, calibration is cumbersome and prone to displacement, affecting measurement efficiency and accuracy. This invention provides a steel structure fire-retardant coating thickness measuring device and method to overcome the shortcomings of existing technologies. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a steel structure fireproof coating thickness measuring device and method, which overcomes the problem that existing steel structure fireproof coating thickness measuring devices are prone to deviation during measurement, resulting in large measurement errors.

[0004] On the one hand, the present invention provides a steel structure fireproof coating thickness measuring device, including a scale ruler, a measuring head, a movable needle, a flat block and a positioning structure;

[0005] The measuring head is slidably disposed outside the scale ruler, the flat block is fixedly connected to the end of the scale ruler, the scale ruler is a hollow cylinder, the flat block has a through hole communicating with the inner cavity of the scale ruler, the non-tip of the movable needle is fixedly connected to the measuring head, the tip of the movable needle is retractably disposed in the through hole of the flat block, and when the measuring head is aligned with the 0 mark of the scale ruler, the tip of the movable needle is flush with the outer surface of the flat block;

[0006] The positioning structure is fixedly connected to the flat block to secure the flat block to one side of the steel structure on which the thickness of the fireproof coating to be measured is located.

[0007] In some embodiments, the bottom side of the scale is provided with a groove that communicates with the inner cavity of the scale, the measuring head is provided with a slider that can slide along the groove and extend into the inner cavity of the scale, and the non-tip of the movable needle is fixedly connected to the slider.

[0008] In some embodiments, the positioning mechanism includes two connecting plates 1, which are respectively fixed to both sides of the flat block, and each connecting plate 1 is vertically connected to a connecting plate 2 on its outer side. Clamping components are provided on the opposite sides of the two connecting plates 2.

[0009] The clamping assembly includes a clamping plate, and a multi-stage telescopic slide rod and a threaded telescopic structure are connected between the clamping plate and the second connecting plate. The threaded telescopic structure includes a threaded sleeve fixed on the clamping plate and a stud rotatably connected to the second connecting plate. One end of the stud is threaded into the threaded sleeve, and the other end of the stud is fixedly connected to a handle.

[0010] In some embodiments, both the first connecting plate and the second connecting plate are T-shaped plates;

[0011] The middle plate of the first connecting plate is fixed to the outside of the flat block. The top plate of the first connecting plate is parallel to the top plate of the second connecting plate, and the length of the top plate of the first connecting plate is less than the length of the top plate of the second connecting plate. The first connecting plate is connected to the second connecting plate by a spring telescopic rod, and a locking component is also provided between the second connecting plate and the first connecting plate.

[0012] The locking assembly includes two rotating rods and two locking pins. The two locking pins are respectively threaded to the outer ends of the top plate of the first connecting plate. One end of each of the two rotating rods is rotatably connected to the outer ends of the top plate of the second connecting plate. Each rotating rod has a slotted hole. The rotating rod is sleeved on the locking pin through the slotted hole. The top plate of the first connecting plate, the two rotating rods, and the top plate of the second connecting plate form a trapezoidal structure.

[0013] In some embodiments, a connecting plate three is fixedly disposed on the inner middle of the connecting plate two, and the two ends of the spring telescopic rod are respectively vertically fixed on the connecting plate three and the intermediate plate between the connecting plate one.

[0014] In some embodiments, the device further includes an electrically operated telescopic rod for pushing and pulling the measuring head, with the telescopic end of the electric telescopic rod connected to the top of the measuring head and the non-telescopic end of the electric telescopic rod fixed to the end of the scale away from the flat block.

[0015] In some embodiments, the device further includes a liftable support rod located below the end of the scale away from the flat block, the top plate of the liftable support rod being provided with a U-shaped support plate, and the scale being detachably connected to the U-shaped support plate.

[0016] In some embodiments, the liftable support rod is a multi-stage telescopic support rod, and adjacent support rods in the multi-stage telescopic support rod are fixedly connected by locking beads and locking slots.

[0017] On the other hand, the present invention discloses a method for measuring the thickness of fire-retardant coatings on steel structures. Based on the aforementioned device for measuring the thickness of fire-retardant coatings on steel structures, the measurement method includes the following steps:

[0018] Align the measuring head with the 0 mark of the scale;

[0019] The flat block is fixed to the surface of the steel structure on one side where the thickness of the fireproof coating to be measured is to be secured using a positioning structure.

[0020] Push the measuring head to move it toward the flat block until the movable needle pierces the coating to the bottom, and then obtain the measurement data on the scale.

[0021] Compared with the prior art, the above invention has at least one of the following advantages or beneficial effects:

[0022] This invention discloses a device and method for measuring the thickness of fire-retardant coatings on steel structures. Through a positioning mechanism, it largely eliminates mechanical errors and measurement interference. Combined with a spiral clamping and locking assembly, it ensures the stability of the device and improves the accuracy of the measurement data. It supports both manual and electric measurement and is equipped with a liftable support rod for working at heights, eliminating the need for additional climbing equipment, reducing operational risks, and expanding applicable scenarios. Attached Figure Description

[0023] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their purpose is to illustrate the gist of the invention.

[0024] Figure 1 This is a schematic diagram of the application of the steel structure fireproof coating thickness measuring device at one angle in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram illustrating another application of the steel structure fireproof coating thickness measuring device in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the steel structure fireproof coating thickness measuring device in an embodiment of the present invention;

[0027] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0028] The components include: 1. Scale ruler; 2. Measuring head; 3. Movable needle; 4. Flat block; 5. Connecting plate one; 6. Spring telescopic rod; 7. Connecting plate two; 8. Multi-stage telescopic slide rod; 9. Stud; 10. Handle; 11. Clamping plate; 12. Threaded sleeve; 13. Rotating rod; 14. Strip hole; 15. Locking pin; 16. Electric telescopic rod; 17. Liftable support rod; 18. Clamping ball; 19. U-shaped support plate. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0030] like Figures 1-4 As shown in the figure, this embodiment discloses a device for measuring the thickness of fireproof coating on steel structures. Specifically, the device includes a scale ruler 1, a measuring head 2, a movable needle 3, a flat block 4, and a positioning structure. The measuring head 2 is sleeved on the outside of the scale ruler 1 and can slide along the length direction of the scale ruler 1. The flat block 4 is fixedly connected to the end of the scale ruler 1. The scale ruler 1 is a hollow cylinder. The interior of the flat block 4 is provided with a through hole communicating with the inner cavity of the scale ruler 1. The non-tip of the movable needle 3 is fixedly connected to the measuring head 2. The tip of the movable needle 3 is retractably disposed in the through hole of the flat block 4. When the measuring head 2 is aligned with the 0 mark of the scale ruler 1, the tip of the movable needle 3 is flush with the outer surface of the flat block 4. The positioning structure is fixedly connected to the flat block 4 to secure the flat block 4 tightly to one side surface of the steel structure on which the thickness of the fireproof coating to be measured is located. The bottom side of the scale ruler 1 is provided with a groove that communicates with the inner cavity of the scale ruler 1. The measuring head 2 is provided with a slider that can slide along the groove and extend into the inner cavity of the scale ruler 1. The non-tip of the movable needle 3 is fixedly connected to the slider so that when the measuring head 2 drives the slider to slide along the length direction of the scale ruler 1 toward the flat block 4, the tip of the movable needle 3 will extend out of the flat block 4 and move forward.

[0031] The aforementioned positioning mechanism includes two connecting plates 5, which are fixed to both sides of the flat block 4. Each connecting plate 5 is vertically connected to a connecting plate 7 on its outer side. Each of the two connecting plates 7 is provided with a clamping assembly on one side opposite to the other. The clamping assembly includes a clamping plate 11, and a multi-stage telescopic slide rod 8 and a threaded telescopic structure are connected between the clamping plate 11 and the connecting plate 7. The threaded telescopic structure includes a threaded sleeve 12 fixed on the clamping plate 11 and a stud 9 rotatably connected to the connecting plate 7. One end of the stud 9 is threaded into the threaded sleeve 12, and the other end of the stud 9 is fixedly connected to a handle 10, which is located on the side of the connecting plate 7 away from the clamping plate 11. Specifically, both connecting plate 5 and connecting plate 7 are T-shaped plates; the middle plate of connecting plate 5 is fixed to the outside of the flat block, the top plate of connecting plate 5 is parallel to the top plate of connecting plate 7, and the center of the top plate of connecting plate 5 corresponds to the center of the top plate of connecting plate 7. The length of the top plate of connecting plate 5 is less than the length of the top plate of connecting plate 7. Connecting plate 5 is connected to connecting plate 7 by spring telescopic rod 6, and a locking assembly is also provided between connecting plate 7 and connecting plate 5. The locking assembly includes two rotating rods 13 and two locking pins 15. The two locking pins 15 are threaded to the outer ends of the top plate of the connecting plate 1-5. One end of each rotating rod 13 is rotatably connected to the outer ends of the top plate of the connecting plate 2-7. Each rotating rod 13 has a slotted hole 14, through which it is fitted onto the locking pin 15. The top plate of the connecting plate 1-5, the two rotating rods 13, and the top plate of the connecting plate 2-7 form a trapezoidal structure. When the locking pin 15 is tightened, the position of the rotating rod 13 is fixed; when the locking pin 15 is loosened, the rotating rod 13 can... It can move through the strip hole 14; a connecting plate 3 is fixedly installed in the middle of the inner side of the connecting plate 2 7, and the two ends of the spring telescopic rod 6 are respectively vertically fixed on the connecting plate 3 and the middle plate of the connecting plate 1 5; when it is necessary to fix the flat block tightly to the steel structure, the position of the locking pin 15 locking the rotating rod 13 can be adjusted according to the shape and size of the steel structure to flexibly adjust the distance between the clamping assembly and the flat block. For example, when the steel structure is a cross-shaped steel column or a circular steel column, the clamping assembly can be adjusted to a position that can clamp the steel structure (e.g., the middle position on the side) by adjusting the position of the locking pin 15 locking the rotating rod 13.

[0032] In this embodiment, the measuring device further includes an electric telescopic rod 16 for pushing and pulling the measuring head 2 and a liftable support rod 17 for supporting the scale ruler 1. The telescopic end of the electric telescopic rod 16 is connected to the top of the measuring head 2, and the non-telescopic end of the electric telescopic rod 16 is fixed to the end of the scale ruler 1 away from the flat block. The liftable support rod 17 is located below the end of the scale ruler 1 away from the flat block, and the top plate of the liftable support rod is provided with a U-shaped support plate 19, and the scale ruler 1 is detachably connected to the U-shaped support plate 19. Preferably, the liftable support rod 17 is a multi-stage telescopic support rod, and the upper and lower adjacent support rods in the multi-stage telescopic support rod are fixedly connected by a bead 18 and a slot, similar to the umbrella shaft of a folding umbrella, so that the height of the liftable support rod can be flexibly adjusted.

[0033] Example 2:

[0034] This embodiment discloses a method for measuring the thickness of fire-retardant coatings on steel structures. Based on the steel structure fire-retardant coating thickness measuring device in Embodiment 1 above, the specific measurement method includes the following steps:

[0035] Align the measuring head with the 0 mark on the scale and zero the measuring head.

[0036] The flat block is fixed to the side surface of the steel structure where the thickness of the fireproof coating to be measured is to be secured using the positioning structure. Specifically, the liftable support rod is first raised to the measurement height, then the flat block is pressed against the surface of the steel structure to be measured. After that, the handle is turned to clamp and fix the two clamps to both sides of the steel structure, and the locking pin is tightened to lock the distance between the clamps and the flat block.

[0037] Push the measuring head or activate the electric telescopic rod to move the measuring head along the scale towards the flat block until the movable needle pierces the coating to the bottom. Obtain the measurement data on the scale, which is the thickness of the fireproof coating on the steel structure.

[0038] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0039] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A device for measuring the thickness of fire-retardant coating on steel structures, characterized in that, Includes a graduated ruler, measuring head, movable pin, flat block, and positioning structure; The measuring head is slidably disposed outside the scale ruler, the flat block is fixedly connected to the end of the scale ruler, the scale ruler is a hollow cylinder, the flat block has a through hole communicating with the inner cavity of the scale ruler, the non-tip of the movable needle is fixedly connected to the measuring head, the tip of the movable needle is retractably disposed in the through hole of the flat block, and when the measuring head is aligned with the 0 mark of the scale ruler, the tip of the movable needle is flush with the outer surface of the flat block; The positioning structure is fixedly connected to the flat block to secure the flat block to one side surface of the steel structure where the thickness of the fireproof coating to be measured is to be firmly attached. The positioning structure includes two connecting plates 1, which are respectively fixed on both sides of the flat block, and each connecting plate 1 is vertically connected to a connecting plate 2 on its outer side. Clamping components are provided on the opposite sides of the two connecting plates 2. The clamping assembly includes a clamping plate, and a multi-stage telescopic slide rod and a threaded telescopic structure are connected between the clamping plate and the second connecting plate. The threaded telescopic structure includes a threaded sleeve fixed on the clamping plate and a stud rotatably connected to the second connecting plate. One end of the stud is threaded into the threaded sleeve, and the other end of the stud is fixedly connected to a handle. Both the first connecting plate and the second connecting plate are T-shaped plates; The middle plate of the first connecting plate is fixed to the outside of the flat block. The top plate of the first connecting plate is parallel to the top plate of the second connecting plate, and the length of the top plate of the first connecting plate is less than the length of the top plate of the second connecting plate. The first connecting plate is connected to the second connecting plate by a spring telescopic rod, and a locking component is also provided between the second connecting plate and the first connecting plate. The locking assembly includes two rotating rods and two locking pins. The two locking pins are respectively threaded to the outer ends of the top plate of the first connecting plate. One end of each of the two rotating rods is rotatably connected to the outer ends of the top plate of the second connecting plate. Each rotating rod has a slotted hole. The rotating rod is sleeved on the locking pin through the slotted hole. The top plate of the first connecting plate, the two rotating rods, and the top plate of the second connecting plate form a trapezoidal structure. A connecting plate three is fixedly installed on the inner middle of the connecting plate two, and the two ends of the spring telescopic rod are respectively vertically fixed on the connecting plate three and the intermediate plate between the connecting plate one.

2. The steel structure fireproof coating thickness measuring device as described in claim 1, characterized in that, The bottom side of the scale is provided with a groove that communicates with the inner cavity of the scale. The measuring head is provided with a slider that can slide along the groove and extend into the inner cavity of the scale. The non-tip of the movable needle is fixedly connected to the slider.

3. The steel structure fireproof coating thickness measuring device as described in claim 1, characterized in that, The device also includes an electric telescopic rod for pushing and pulling the measuring head, with the telescopic end of the electric telescopic rod connected to the top of the measuring head and the non-telescopic end of the electric telescopic rod fixed to the end of the scale away from the flat block.

4. The steel structure fireproof coating thickness measuring device as described in claim 1, characterized in that, The device also includes a liftable support rod located below the end of the scale away from the flat block. The top plate of the liftable support rod is provided with a U-shaped support plate, and the scale is detachably connected to the U-shaped support plate.

5. The steel structure fireproof coating thickness measuring device as described in claim 4, characterized in that, The liftable support rod is a multi-stage telescopic support rod, and the upper and lower adjacent support rods in the multi-stage telescopic support rod are fixedly connected by locking beads and locking slots.

6. A method for measuring the thickness of fire-retardant coatings on steel structures, characterized in that, Based on the steel structure fireproof coating thickness measuring device as described in any one of claims 1-5, the measuring method includes the following steps: Align the measuring head with the 0 mark of the scale; The flat block is fixed to the surface of the steel structure on one side where the thickness of the fireproof coating to be measured is to be secured using a positioning structure. Push the measuring head to move it toward the flat block until the movable needle pierces the coating to the bottom, and then obtain the measurement data on the scale.

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