A fire-retardant coating spray thickness positioning device

Abstract

The application discloses a fireproof coating spraying thickness positioning device, which comprises a sliding rail and two sliding blocks installed on the sliding rail in sequence, the sliding rail is detachably installed on a steel structure body, the sliding blocks can slide along the extension direction of the sliding rail, vertical rods are installed on the sliding blocks, horizontal rods are movably connected to the vertical rods, the two horizontal rods are oppositely arranged and connected with supports, a plurality of first distance indicating lines are connected between the two supports, the first distance indicating lines are located on the same plane and are parallel to a first to-be-sprayed plane, and the horizontal rods are transversely moved relative to the vertical rods to adjust the distance between the first distance indicating lines and the first to-be-sprayed plane. The visible distance indicating lines enable the construction personnel to more intuitively observe the spraying thickness conditions of different stages and different areas during the fireproof coating spraying process, and the spraying quality is improved and the spraying effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of fire-retardant spraying, and in particular to a fire-retardant coating thickness positioning device. Background Technology

[0002] In steel structure construction, fire-retardant coatings are typically applied to the steel surface to ensure fire safety, thereby improving the material's fire resistance and the fire resistance limit of components, and guaranteeing the fire resistance performance of the building structure. According to relevant technical specifications, thick-film fire-retardant coatings should generally be applied using a pressure-feed sprayer, with each coat being 5 to 10 mm thick. Each coat must be applied only after the previous one has essentially dried or cured. The spraying method, number of coats, and coating thickness should be determined based on the construction design requirements. During construction, the operator should use a thickness gauge to check the coating thickness until it meets the design specifications. If the coating thickness is less than 85% of the design thickness, or if the coating thickness is greater than 85% but the continuous area of ​​the coating not reaching the specified thickness exceeds 1 meter in length, the fire-retardant coating must be reapplied.

[0003] In existing technologies, the thickness of fire-retardant coatings during steel structure construction is often measured manually using handheld measuring instruments, typically thickness gauges or probes. This process is complex, involves numerous tests, and often requires constant fine-tuning to improve the reliability of the results. This increases the workload for workers and directly impacts the quality and efficiency of fire-retardant coating application.

[0004] Therefore, how to provide a thickness positioning device that can intuitively determine whether the thickness of fireproof coating has met the requirements is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a fire-retardant coating thickness positioning device, which allows construction workers to intuitively observe the coating thickness at different stages and in different areas during the fire-retardant coating spraying process through a distance indicator line, thereby improving the spraying quality and ensuring the spraying effect.

[0006] To solve the above-mentioned technical problems, the present invention provides a fire-retardant coating spraying thickness positioning device, including a sliding rail and two sliders sequentially installed on the sliding rail. The sliding rail is detachably installed on the steel structure body. The sliders can slide along the extension direction of the sliding rail. Each slider is equipped with a vertical rod, and each vertical rod is movably connected to a horizontal rod. The two horizontal rods are arranged opposite each other and connected to a bracket. A plurality of first distance indicators are connected between the two opposite brackets. The plurality of first distance indicators are located in the same plane and parallel to the first coating plane of the steel structure body. The horizontal rods move laterally relative to the vertical rods to adjust the distance between the first distance indicators and the first coating plane.

[0007] Preferably, the two opposing crossbars are perpendicular to the first plane to be sprayed, the bracket is L-shaped, one end of the bracket is connected to the inner end of the crossbar, the other end of the bracket is parallel to the first plane to be sprayed, the two opposing brackets are parallel to each other, and the plurality of the first distance lines are parallel to each other and perpendicular to the brackets.

[0008] Preferably, each vertical rod is equipped with a horizontal rod and a bracket at both ends. Two horizontal rods on the same vertical rod are respectively close to two second surfaces to be sprayed. Multiple second distance lines are connected between the two horizontal rods on the two vertical rods that are close to the same second surface to be sprayed. The horizontal rod moves vertically relative to the vertical rod to adjust the distance between the second distance line and the second surface to be sprayed.

[0009] Preferably, the steel structure body is an H-beam, the first surface to be sprayed is the web surface of the H-beam, the second surface to be sprayed is the inner surface of the flange of the H-beam, and the sliding rail is installed on the outer surface of the flange of the H-beam.

[0010] Preferably, both the vertical bar and the horizontal bar are provided with scale lines.

[0011] Preferably, magnetic fixing rods connecting the edges of the H-shaped steel wing plate are installed at both ends of the vertical rod.

[0012] Preferably, the sliding track is attached to the steel structure body by a magnet.

[0013] Preferably, the slider is provided with a cantilever rod, and one end of the vertical rod is movably connected to the cantilever rod and locked by bolts.

[0014] Preferably, the first distance indicator line and the second distance indicator line are mounted to the bracket and the crossbar by hook and loop fasteners.

[0015] Preferably, the horizontal bar and the vertical bar are connected by a slide block, and the slide block is provided with a locking bolt.

[0016] This invention provides a fire-retardant coating spraying thickness positioning device, including a sliding rail and two sliders sequentially installed on the sliding rail. The sliding rail is detachably installed on the steel structure body. The sliders can slide along the extension direction of the sliding rail. Each slider is equipped with a vertical rod, and each vertical rod is movably connected to a horizontal rod. The two horizontal rods are arranged opposite each other and connected to a bracket. A plurality of first distance lines are connected between the two opposite brackets. The plurality of first distance lines are located on the same plane and parallel to the first plane to be sprayed. The horizontal rods move laterally relative to the vertical rods to adjust the distance between the first distance lines and the first plane to be sprayed.

[0017] During the operation, the sliding rail is installed on the steel structure body to be sprayed. By adjusting the position of the crossbar, the distance between the plane formed by the distance line and the first plane to be sprayed is adjusted, thereby determining the thickness of the spray. The first distance line is used as a spraying reference to complete one spraying of this area. Then, the slider is moved so that the two vertical bars are aligned with the next area to continue spraying. The spraying is repeated to complete the spraying of the entire steel structure body.

[0018] The visible distance indicator lines allow construction workers to intuitively observe the coating thickness at different stages and in different areas during the fire-retardant coating application process, thereby improving coating quality and ensuring coating effectiveness. This enables in-process control; the distance indicator lines allow for downstream inspections during the spraying process, reducing the workload of thickness checks during multi-coat application and providing quality inspectors with a method to monitor the coating effect, resulting in better quality control. The sliding rails allow workers to quickly move the support to the next section after completing one section, demonstrating the device's practicality. Attached Figure Description

[0019] Figure 1 A schematic diagram of a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention;

[0020] Figure 2 A front view schematic diagram of a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention;

[0021] Figure 3 A schematic diagram of the sliding track in a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the vertical rod in a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention.

[0023] The components include: sliding track 1, slider 2, vertical rod 3, horizontal rod 4, bracket 5, first distance indicator line 6, magnetic fixing rod 7, cantilever rod 8, steel structure body 9, and second distance indicator line 10. Detailed Implementation

[0024] The core of this invention is to provide a fire-retardant coating thickness positioning device. By using a distance indicator line, construction workers can more intuitively observe the coating thickness at different stages and in different areas during the fire-retardant coating spraying process, thereby improving the spraying quality and ensuring the spraying effect.

[0025] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to Figures 1 to 4 , Figure 1 A schematic diagram of a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention; Figure 2 A front view schematic diagram of a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention; Figure 3 A schematic diagram of the sliding track in a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention; Figure 4 This is a schematic diagram of the vertical rod in a specific embodiment of the fire-retardant coating thickness positioning device provided by the present invention.

[0027] The present invention provides a fireproof coating spraying thickness positioning device, including a sliding track 1, a slider 2, a vertical rod 3, a horizontal rod 4, a bracket 5 and a distance indicator line. The sliding track 1 is detachably installed on the steel structure body 9. Two sliders 2 are installed sequentially on the sliding track 1 along the extension direction of the sliding track 1. At the same time, the sliders 2 can slide along the extension direction of the sliding track 1, driving the components connected to the sliders 2 to move synchronously. Each slider 2 is equipped with a vertical rod 3, thus having two vertical rods 3. To make the structure more neat and facilitate the installation and movement of subsequent components, the two vertical rods 3 are parallel to each other and parallel to the first plane to be sprayed on the steel structure body 9. The arrangement of the vertical rods 3 can also be adjusted according to the situation. Furthermore, each vertical rod 3 is movably connected to a horizontal rod 4. The two horizontal rods 4 that are opposite to each other on different vertical rods 3 are connected to brackets 5, forming two brackets 5 that connect the two vertical rods 3 respectively. The two brackets 5 are opposite to each other and connected by multiple first distance lines 6, so that the multiple first distance lines 6 are located on the same plane and parallel to the first plane to be sprayed. The multiple first distance lines 6 have a specific interval with the first plane to be sprayed to meet the required spraying thickness. In use, the horizontal bar 4 is controlled to move laterally relative to the vertical bar 3. The extension direction of the vertical bar 3 is defined as vertical, and the plane formed by the two vertical bars is parallel to the first plane to be sprayed. The way it is perpendicular to the first plane to be sprayed is called lateral. When the horizontal bar 4 moves laterally, it will drive the bracket 5 and the first distance indicator line 6 to move laterally, so that the first distance indicator line 6 is closer to or farther away from the first plane to be sprayed, thereby adjusting the distance between the first distance indicator line 6 and the first plane to be sprayed, that is, adjusting different spray thicknesses.

[0028] Specifically, the sliding track 1 has an I-shaped cross-section, and rollers are provided on both sides of the slider 2. The rollers clamp the protruding edges on both sides of the sliding track 1, allowing the slider 2 to slide smoothly along the extension direction of the sliding track 1. At the same time, two opposing baffles are provided at the bottom of the slider 2. The two baffles are bent inward and extend into the grooves on both sides of the sliding track 1 to prevent the slider 2 from detaching. The sliding track 1 is installed along the fire-retardant coating spraying path.

[0029] During the operation, the sliding rail 1 is installed on the steel structure body 9 to be sprayed. By adjusting the position of the crossbar 4, the distance between the plane formed by the first distance line 6 and the first plane to be sprayed is adjusted, thereby determining the thickness of the spray. The first distance line 6 is used as a spraying reference to complete one spraying of this area. Then, the slider 2 is moved so that the two vertical bars 3 are aligned with the next area to continue spraying. The spraying is repeated to complete the spraying of the entire steel structure body 9.

[0030] The visible first distance indicator line 6 allows construction workers to intuitively observe the coating thickness at different stages and in different areas during the fire-retardant coating application process, thereby improving coating quality and ensuring coating effect. It enables in-process control; the first distance indicator line 6 allows for downstream inspection during the spraying process, reducing the workload of thickness checks during multi-coat fire-retardant coating application and providing quality inspectors with a method to monitor the coating effect, achieving better quality control. The sliding rail 1 allows workers to quickly move the support 5 to the next section after completing one section of spraying, which is convenient and demonstrates the practicality of the device.

[0031] Specifically, to ensure a stable connection, the two opposite horizontal bars 4 located on the two vertical bars 3 are perpendicular to the first plane to be sprayed. The bracket 5 is L-shaped, including two ends arranged at right angles. One end of the bracket 5 is perpendicular to the first plane to be sprayed and connects to the end of the horizontal bar 4 near the first plane to be sprayed. The two can be connected by bolts or other means. The other end of the bracket 5 is parallel to the first plane to be sprayed, and the two opposite brackets 5 are parallel to each other, so that the ends of the two brackets 5 near the first plane to be sprayed are located in the same plane. This plane is parallel to the first plane to be sprayed, and multiple first distance lines 6 are located in this plane. The multiple first distance lines 6 are parallel to each other and perpendicular to the bracket 5.

[0032] In order to accommodate different types of steel structure bodies 9, in addition to spraying on the first spraying plane, it is also necessary to spray on the second spraying plane perpendicular to the first spraying plane, that is, to spray the entire inner surface of a groove, with the two second spraying planes located at the two ends of the first spraying plane respectively.

[0033] Both ends of the same vertical rod 3 are equipped with horizontal rods 4 and brackets 5. The two horizontal rods 4 on the same vertical rod 3 are respectively close to the two second surfaces to be sprayed, and the two brackets 5 on the same vertical rod 3 are arranged opposite each other, that is, the diameter of the two L-shapes matches the shape of the two corners of the groove. At the same time, the ends of the two brackets 5 parallel to the first surface to be sprayed are close to each other. The two planes formed by the first distance lines 6 on the four brackets 5 cover the first surface to be sprayed as much as possible, so that the two planes are close to each other.

[0034] Furthermore, multiple second distance lines 10 are connected between two horizontal bars 4 on the two vertical bars 3 that are close to the same second surface to be sprayed. These multiple second distance lines 10 form a plane parallel to the second surface to be sprayed. This plane is close to the second surface to be sprayed. The horizontal bars 4 move vertically relative to the vertical bars 3 to adjust the distance between the second distance lines 10 and the second surface to be sprayed. When the horizontal bars 4 move vertically, they cause the bracket 5 and the second distance lines 10 to move vertically, causing the second distance lines 10 connecting the horizontal bars 4 to move closer to or further away from the second surface to be sprayed, thereby adjusting the distance between the second distance lines 10 and the second surface to be sprayed, i.e., adjusting different spray thicknesses.

[0035] Specifically, the steel structure body 9 is an H-beam, the first surface to be sprayed is the web plane of the H-beam, the second surface to be sprayed is the inner plane of the flange of the H-beam, and the sliding rail 1 is installed on the outer plane of the flange of the H-beam. Of course, the steel structure body 9 can also be an I-beam, L-beam, etc.

[0036] In the fireproof coating spraying thickness positioning device provided in the specific embodiment of the present invention, scale lines are provided on both the vertical rod 3 and the horizontal rod 4, so that the horizontal rod 4 can be moved a specific distance to meet different spraying thickness requirements.

[0037] Magnetic fixing rods 7 are installed at both ends of the vertical rod 3, connecting to the edges of the H-shaped steel wing plates. This makes the support of the vertical rod 3 more stable. The vertical rod 3 and the magnetic fixing rods 7 can be fixed with bolts. The sliding track 1 is attracted to the steel structure body 9 by magnets. A cantilever rod 8 is provided on the slider 2, which is parallel to the horizontal rod 4. One end of the vertical rod 3 is movably connected to the cantilever rod 8 and locked with bolts. Furthermore, the first distance indicator line 6 and the second distance indicator line 10 are installed on the bracket 5 and the horizontal rod 4 with hook and loop fasteners. Other connection methods, such as threaded connections or snap-fit ​​connections, can also be used, all of which are within the protection scope of this invention.

[0038] Based on the fireproof coating spraying thickness positioning device provided in the above specific embodiments, the horizontal bar 4 and the vertical bar 3 are connected by a slide block, and a locking bolt is provided on the slide block. After the position of the horizontal bar 4 is moved, it can be fixed by the locking bolt.

[0039] The specific implementation steps are as follows:

[0040] Fire-retardant coating should be applied to the base surface of the steel structure. Rust should be removed from the surface of the steel structure body (9), and rust prevention treatment should be determined according to the usage requirements. Rust removal and rust prevention treatment should comply with the relevant provisions in current specifications, and debris on the surface of the steel structure body (9) should be thoroughly cleaned.

[0041] The sliding rail 1 is installed by marking the installation edge line of the sliding rail 1 longitudinally along the upper surface of the wing plate of the steel structure body 9 using a chalk line. The sliding rail 1 is arranged along the installation edge line and fixed to the steel structure body 9 by the magnet at the bottom of the sliding rail 1. The slider 2 and the cantilever rod 8 are then installed on the sliding rail 1.

[0042] Install bracket 5 by attaching two vertical rods 3 to the two cantilever rods 8, ensuring that the vertical rods 3 are parallel to the web of the H-beam. Then, attach the magnetic fixing rod 7 to the edge of the wing plate for fixation. After adjusting to the appropriate height, tighten the bolts to secure the vertical rods 3. Install bracket 5 on the corresponding horizontal rods 4. Thread the first distance indicator line 6 and the second distance indicator line 10 onto the hook and loop fasteners and install them on bracket 5 and horizontal rods 4. Then, connect the corresponding horizontal rods 4, magnetic fixing rods 7, and vertical rods 3. Tighten the bolts of the magnetic fixing rods 7 to stabilize bracket 5. Adjust the distance between the distance indicator lines and the first and second surfaces to be sprayed using the scale lines on the vertical rods 3 and horizontal rods 4, adjusting them to the first spray thickness position of the wing plate and web plate of the steel structure body 9, generally between 5 and 10 mm. In this example, 9 mm can be selected as the target thickness for this spraying, which is completed in five coats.

[0043] Fire-retardant coating is applied in multiple coats, each 9mm thick. A pressure-feed sprayer is used with an air pressure of 0.4 to 0.6 MPa and a nozzle diameter of 6 to 10mm. The nozzle should be 6 to 10cm away from the surface. The nozzle should be kept approximately perpendicular to the substrate, and the spraying direction should be parallel to the surface of the steel structure 9, spraying back and forth. The thickness of the fire-retardant coating should be observed during the spraying process until it is parallel to the first and second reference lines 6 and 10. At this point, the support 5 can be moved to the next section. If any area is found to be uneven with the reference lines 6 and 10, it should be reapplied as soon as possible.

[0044] The fire-retardant coating for the steel structure body 9 must be applied only after the previous coat has basically dried or cured. During the waiting period, the crossbar 4 can be adjusted so that the first distance line 6 and the second distance line 10 are at the position required for the next coat thickness. Repeat the above spraying process until the fire-retardant coating thickness meets the design requirements.

[0045] Disassemble bracket 5, loosen magnetic fixing rod 7, move each component away from steel structure body 9 along cantilever rod 8, then disassemble vertical rod 3, horizontal rod 4, bracket 5, and distance indicator line, and then disassemble sliding rail 1 and slider 2.

[0046] The fire-retardant coating spraying thickness positioning device provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fire-retardant coating spraying thickness positioning device, characterized in that, Includes a sliding track (1) and two sliders (2) sequentially installed on the sliding track (1). The sliding track (1) is detachably installed on the steel structure body (9). The sliders (2) can slide along the extension direction of the sliding track (1). Each slider (2) is equipped with a vertical rod (3). Each vertical rod (3) is movably connected with a horizontal rod (4). The two horizontal rods (4) are arranged opposite to each other and connected with a bracket (5). Multiple first distance lines (6) are connected between the two opposite brackets (5). The multiple first distance lines (6) are located on the same plane and parallel to the first spraying plane of the steel structure body (9). The horizontal rod (4) moves laterally relative to the vertical rod (3) to adjust the distance between the first distance line (6) and the first spraying plane. The two opposing crossbars (4) are perpendicular to the first plane to be sprayed. The bracket (5) is L-shaped. One end of the bracket (5) is connected to the inner end of the crossbar (4). The other end of the bracket (5) is parallel to the first plane to be sprayed. The two opposing brackets (5) are parallel to each other, and the plurality of the first distance lines (6) are parallel to each other and perpendicular to the bracket (5). Each vertical rod (3) is equipped with a horizontal rod (4) and a bracket (5) at both ends. The two horizontal rods (4) on the same vertical rod (3) are respectively close to two second surfaces to be sprayed. Multiple second distance lines (10) are connected between the two horizontal rods (4) on the two vertical rods (3) that are close to the same second surface to be sprayed. The horizontal rod (4) moves vertically relative to the vertical rod (3) to adjust the distance between the second distance line (10) and the second surface to be sprayed. The steel structure body (9) is an H-beam, the first surface to be sprayed is the web plane of the H-beam, the second surface to be sprayed is the inner plane of the flange of the H-beam, and the sliding track (1) is installed on the outer plane of the flange of the H-beam.

2. The fire-retardant coating thickness positioning device according to claim 1, characterized in that, Both the vertical rod (3) and the horizontal rod (4) are provided with scale lines.

3. The fire-retardant coating thickness positioning device according to claim 2, characterized in that, The vertical rod (3) is equipped with magnetic fixing rods (7) at both ends that connect to the edges of the H-shaped steel wing plate.

4. The fire-retardant coating spraying thickness positioning device according to claim 3, characterized in that, The sliding track (1) is attached to the steel structure body (9) by a magnet.

5. The fire-retardant coating thickness positioning device according to claim 4, characterized in that, The slider (2) is provided with a cantilever rod (8), and one end of the vertical rod (3) is movably connected to the cantilever rod (8) and locked by bolts.

6. The fire-retardant coating spraying thickness positioning device according to claim 5, characterized in that, The first distance indicator line (6) and the second distance indicator line (10) are attached to the bracket (5) and the crossbar (4) by hook and loop fasteners.

7. The fire-retardant coating thickness positioning device according to any one of claims 1 to 6, characterized in that, The horizontal bar (4) and the vertical bar (3) are connected by a slide block, and the slide block is provided with a locking bolt.

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