Fire retardant coating spraying thickness control tool for steel structural member

Abstract

The utility model provides a steel structure component fireproof coating spraying thickness control tool, which belongs to the technical field of steel structure fireproof coating construction and comprises a positioning ring and a plurality of thickness control pieces. The shape of the positioning ring is matched with that of the steel structural member; the length of the thickness control piece is the preset thickness of the steel structure component fireproof coating, the head is connected with the inner side of the positioning ring, and the tail is used for abutting against the outer side of the steel structure component. The tool is simple in structure, low in material consumption, easy to manufacture, convenient to disassemble and assemble, easy to operate and suitable for various steel structural members including circular members, oval members and special-shaped members.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure fire retardant coating construction, and specifically discloses a tool for controlling the spraying thickness of fire retardant coating for steel structure components. Background Art

[0002] In general steel structure construction, after the surface of the component is treated with anti-rust, it is necessary to spray fire retardant coating. Fire retardant coating is divided into thick, thin and ultra-thin types. There are three common methods for controlling the thickness of spraying: the first method is to measure with a needle (or other types) thickness gauge during the spraying process, the second method is the component outer diameter measurement method, and the third method is to ask a third-party testing unit to use professional instruments to test and issue a test report after the spraying is completed. Among them, the first method has the problem that the fire retardant coating is difficult to penetrate after hardening (especially thick-coated fire retardant coating); the second method has the problem that it is difficult to control the uneven thickness of the same section, and it is not suitable for elliptical components or special-shaped components; the third method has the problem that the thickness of the spraying process cannot be controlled.

[0003] The purpose of spraying fire retardant coating on the surface of steel structure components is to form a fire-resistant and heat-insulating protective layer on the surface of the components, slow down the spread of flames, or prevent combustion within a certain period of time, thereby improving the fire resistance limit of the coated components and materials. The spray thickness of fire retardant coating determines its fire resistance. Therefore, in the construction of fire retardant coating spraying, the spray thickness must be strictly controlled to ensure that the thickness meets the design requirements and meets the design fire resistance limit. This can not only meet the requirements of design and specifications, but also avoid material waste, which helps to reduce construction costs. Utility Model Content

[0004] The utility model provides a fire retardant coating spraying thickness control tool which is easy to manufacture, easy to disassemble and assemble, adjustable and suitable for steel structure components including round, elliptical and special-shaped components, so as to solve the technical problem that the thickness of the fire retardant coating is difficult to control when spraying the steel structure components.

[0005] The above-mentioned steel structure component fire retardant coating spray thickness control tool includes a positioning ring and multiple thickness control parts; the shape of the positioning ring is adapted to the shape of the steel structure component; the length of the thickness control part is the preset thickness of the steel structure component fire retardant coating, the head is connected to the inner side of the positioning ring, and the tail is used to abut against the outer side of the steel structure component.

[0006] The above-mentioned steel structure component fire retardant coating spray thickness control tool also includes a locking piece; the positioning ring is formed by bending a rectangular sheet structure along the length direction, and the two ends are locked by the locking piece.

[0007] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the rectangular sheet structure is a rectangular sheet structure of metal material.

[0008] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the end of the rectangular sheet structure is bent outward to form a locking groove; the locking piece is a rectangular ring with a width equal to the width of the rectangular sheet structure, and two wide sides are inserted into the locking grooves on both sides.

[0009] In the above-mentioned fire retardant coating spray thickness control tool for steel structure components, the thickness control part is a conical structure, the head is connected to the inner side of the positioning ring, and the diameter gradually decreases from the head to the tail.

[0010] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the surfaces of the positioning ring, the locking piece and the thickness control piece are all provided with an anti-rust layer.

[0011] In the above-mentioned fire retardant coating spray thickness control tool for steel structural components, the positioning ring is formed by bending a rectangular galvanized iron sheet; the locking piece is formed by bending a galvanized iron wire; and the thickness control piece is a galvanized iron nail.

[0012] Compared with the prior art, the utility model has the following beneficial effects.

[0013] When using the above-mentioned steel structure component fire retardant coating spray thickness control tool, it is only necessary to determine the length of the positioning ring, the length and number of the thickness control parts according to the circumference, shape and preset thickness of the fire retardant coating of each steel structure component, and fix the tool on each component before spraying the fire retardant coating, and then spray the fire retardant coating until the thickness of the fire retardant coating reaches the length of the thickness control part to effectively ensure the spray thickness of the fire retardant coating. This tool has a simple structure, uses less materials, is easy to make, easy to disassemble and assemble, and is simple to operate. It is suitable for various steel structure components including round, elliptical and special-shaped components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 Structural diagram of the fire retardant coating spraying thickness control tool for steel structural components;

[0016] Figure 2 The figure is an expanded view of a positioning ring and a plurality of thickness control parts;

[0017] Figure 3 The grid layout diagram (main view) of the roof of the restaurant in the management center and the roof of the toll shed in the toll station;

[0018] Figure 4This is the grid layout diagram (side view) of the roof of the management center restaurant and the roof of the toll shed in the toll station.

[0019] In the figure: 1- positioning ring; 2- thickness control member; 3- locking member. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] The present embodiment provides a tool for controlling the thickness of fire retardant coating sprayed on steel structure components, comprising a positioning ring 1 and a plurality of thickness control parts 2; the shape of the positioning ring 1 is adapted to the shape of the steel structure component, and thus can be used for various steel structure components including circular, elliptical and special-shaped components; the length of the thickness control part 2 is the preset thickness of the fire retardant coating of the steel structure component, the head is connected to the inner side of the positioning ring 1, and the tail is used to abut against the outer side of the steel structure component; the positioning ring 1 is enclosed on the outer side of the steel structure component by the thickness control part 2.

[0023] The above-mentioned steel structure component fire retardant coating spray thickness control tool also includes a locking piece 3; the positioning ring 1 is formed by bending a rectangular sheet structure along the length direction, and both ends are locked by the locking piece 3 to achieve convenient disassembly and assembly.

[0024] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the rectangular sheet structure is a rectangular sheet structure of metal material.

[0025] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the end of the rectangular sheet structure is bent outward to form a locking groove; the locking piece 3 is a rectangular ring with a width equal to the width of the rectangular sheet structure, and the two wide sides are inserted into the locking grooves on both sides to achieve locking of the shape of the positioning ring 1.

[0026] In the above-mentioned steel structure component fire retardant coating spray thickness control tool, the thickness control part 2 is a conical structure, the head is connected to the inner side of the positioning ring 1, and the diameter gradually decreases from the head to the tail, which not only ensures the connection strength with the positioning ring 1, but also reduces the space occupied in the fire retardant coating.

[0027] In the above-mentioned fire retardant coating spray thickness control tool for steel structural components, the surfaces of the positioning ring 1, the locking piece 3 and the thickness control piece 2 are all provided with an anti-rust layer to prevent rust.

[0028] In the above-mentioned fire retardant coating spray thickness control tool for steel structural components, the positioning ring 1 is formed by bending a rectangular galvanized iron sheet; the locking piece 3 is formed by bending a galvanized iron wire; and the thickness control piece 2 is a galvanized iron nail.

[0029] The method of using the above-mentioned steel structure component fire retardant coating spray thickness control tool is as follows.

[0030] (1) Making a tool to control the thickness of fire retardant coating sprayed on steel structure components

[0031] Making positioning ring 1: Make the galvanized iron sheet (thickness of about 0.5mm) into a rectangle with a width of 5mm and a length greater than the circumference of the steel structure component after spraying the fire retardant coating. If it is too wide, it will easily cause the tool to wrap around the covered part and the fire retardant coating will not be sprayed fully and densely. If it is too narrow, it will easily cause the tool to be installed unstably. Before making the positioning ring 1, the outer circumference of the steel structure component must be accurately measured, and the thickness of the fire retardant coating must be added to determine the length of the positioning ring 1;

[0032] Making the locking piece 3: Made of galvanized iron wire, the locking piece 3 is a rectangular ring with a width equal to the width of the positioning ring 1 and a length of about 10 mm;

[0033] Making thickness control part 2: Made of capless galvanized iron nails, the diameter of the iron nails should be as thin as possible, and the length should be determined according to the thickness of the fire retardant coating. If the iron nails are long, they can be cut to the required length;

[0034] Combined to form a thickness control tool for fire retardant coating spraying on steel structure components: nail the thickness control piece 2 on the positioning ring 1, and the head of the galvanized iron nail is flush with the galvanized iron sheet. The number of thickness control pieces 2 is determined according to the diameter (or circumference) of the steel structure component. Generally, 3-5 pieces can meet the requirements.

[0035] (2) Installing fire retardant coating thickness control tool for steel structure components

[0036] The tool is easy to install and does not require any tools. Just wrap the positioning ring 1 around the outside of the steel structure component, make the thickness control part 2 rest against the steel structure component and lock it with the locking part 3. After installation, the tool needs to be adjusted to make it stable and flat. To facilitate spraying construction and later removal, the tool should be installed as little as possible. Generally, 1-2 tools can be installed on a single steel structure component (rod).

[0037] (3) Fire retardant coating spraying construction and process thickness measurement

[0038] The base coat or main coat of thin-coated steel structure fire retardant coating is sprayed by gravity spray gun with a pressure of about 0.4MPa. Local repair and small area construction can be applied by hand, and the surface decorative coating is applied by spraying.

[0039] When spraying fire retardant coating, the part where the tool is installed cannot be sprayed with the nozzle pointing vertically downward. Instead, spray obliquely inward from both sides of the tool to ensure that the coating on the part covered by the tool is full and dense;

[0040] When the spray thickness of the fire retardant coating is visually checked to be flush with the inner side of the positioning ring 1, the spray thickness and surface flatness of each part of the steel structure member can be detected by pulling a straight line or using a level ruler. The fire retardant coating covering the surface of the tool needs to be removed during the inspection. To prevent the fire retardant coating from being difficult to remove after hardening, it is necessary to spray, clean and measure as the spraying construction progresses. Alternatively, tape can be pasted on the outside of the positioning ring 1 according to the number of times the fire retardant coating is sprayed, and a layer of tape can be peeled off after a layer of fire retardant coating is sprayed.

[0041] (4) Dismantle the fire retardant coating thickness control tool for steel structure components

[0042] After the spraying thickness is tested by a third-party testing unit and found to be qualified, the fire retardant coating spraying thickness control tool for steel structure components can be removed. When removing, only the positioning ring 1 and locking part 3 of the tool need to be removed, and the thickness control part 2 can be left in the fire retardant coating;

[0043] Since the thickness control member 2 is made of a capless galvanized iron nail, the positioning ring 1 can be easily removed by using only a pair of pliers. After removal, the part needs to be slightly polished with sandpaper;

[0044] If the design does not require high visual quality, the tool may not be removed.

[0045] Example 2

[0046] The applicant undertook the construction of a highway, the construction scope includes two service areas, two toll stations and the operation and management center of the highway. The main construction contents include building construction, fences, roads, parking lots, pipe networks, lighting, and equipment installation projects within the site. The roof of the restaurant in the management center and the roof of the toll shed in the toll station adopt steel grid structure, such as Figure 3 and Figure 4 As shown, the design uses spray-applied thin-coat fire-retardant paint for structural fire protection.

[0047] During the fire-retardant coating spraying construction, the fire-retardant coating spraying thickness control tool for steel structure components described in Example 1 is used to control the spraying thickness, so that the fire-retardant coating spraying thickness can be tested qualified in one time, the construction quality is guaranteed, the construction efficiency is improved, and it can effectively avoid waste of materials caused by excessively thick coating spraying, save construction costs, and use a high-pressure airless sprayer during construction, which effectively reduces the flying of coating during the spraying process and reduces pollution to the environment.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fire retardant coating spray thickness control tool for steel structure components, characterized in that: including a positioning ring and a plurality of thickness control members; The shape of the positioning ring is adapted to the shape of the steel structure member; The length of the thickness control member is the preset thickness of the fire retardant coating of the steel structure component, the head portion is connected to the inner side of the positioning ring, and the tail portion is used to abut against the outer side of the steel structure component.

2. The fire retardant coating spray thickness control tool for steel structure components according to claim 1, characterized in that: Also included is a locking member; The positioning ring is formed by bending a rectangular sheet structure along the length direction, and both ends are locked by locking pieces.

3. The fire retardant coating spray thickness control tool for steel structure components according to claim 2, characterized in that: The rectangular sheet structure is a rectangular sheet structure of a metal material.

4. The fire retardant coating spray thickness control tool for steel structure components according to claim 2 or 3, characterized in that: The ends of the rectangular sheet structure are bent outward to form a locking groove; The locking piece is a rectangular ring, the width of which is the width of the rectangular sheet structure, and the two wide sides are inserted into the locking grooves on both sides.

5. The fire retardant coating spray thickness control tool for steel structure components according to claim 1, characterized in that: The thickness control piece is a conical structure, the head of which is connected to the inner side of the positioning ring, and the diameter of which decreases gradually from the head to the tail.

6. The fire retardant coating spray thickness control tool for steel structure components according to claim 4, characterized in that: The surfaces of the positioning ring, the locking piece and the thickness control piece are all provided with an anti-rust layer.

7. The fire retardant coating spray thickness control tool for steel structure components according to claim 6, characterized in that: The positioning ring is made of rectangular galvanized iron sheet bent; The locking piece is made of bent galvanized iron wire; The thickness control parts are galvanized iron nails.

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