Anti-cracking performance detection device for non-expansive fireproof coating
By designing a fire-retardant coating testing device with leveling, moving, and fixing mechanisms, the problem of poor adaptability of traditional devices has been solved. This enables stable fixing and flexible testing of steel plates of different specifications, improving the accuracy of testing and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANHU SUDONG CHEM IND CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional fire-retardant coating testing devices cannot adapt to steel plates of different specifications, resulting in unstable fixation and affecting the accuracy of test results.
A testing device including leveling, moving, and fixing mechanisms was designed. By adjusting the height and position, it can adapt to steel plates of different thicknesses and widths, ensuring stable fixing before tensile testing.
It enables stable fixing and flexible testing of steel plates of different specifications, improving the accuracy of testing and the ease of operation.
Smart Images
Figure CN224137055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire-retardant coating testing technology, specifically to a crack-resistant performance testing device for non-intumescent fire-retardant coatings. Background Technology
[0002] Non-intumescent fire retardant coatings (also known as thick fire retardant coatings) are fire-resistant materials specifically designed for steel structures. Their core feature is that they do not expand in volume under high-temperature environments, but instead form a dense heat insulation layer to block the transfer of flames and heat.
[0003] When testing the crack resistance of non-intumescent fire retardant coatings, a testing device is used to stretch the steel plate coated with the non-intumescent fire retardant coating and test its adhesion strength. If the adhesion is too low, it is easy to cause cracking. However, traditional testing devices have limitations in fixing and stretching the steel plate, and it is not convenient to adjust and adapt them according to the thickness and width specifications of the steel plate.
[0004] Therefore, a crack resistance testing device for non-intumescent fire-retardant coatings is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a crack resistance testing device for non-intumescent fire-retardant coatings in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A crack resistance testing device for non-expansion fire-retardant coatings includes a workbench, a fixed base on the top of the workbench, a shelf on the top of the fixed base, a support column at the bottom of the workbench, a leveling mechanism for adjusting the height of the support column, a moving mechanism for adjusting the position distance on the workbench, and a fixing mechanism for pressing and fixing a steel plate on the moving mechanism.
[0008] Furthermore, the leveling mechanism includes four studs, the number of support columns is set to four, and the four studs are respectively threaded onto the four support columns. A knob is fixedly installed at the bottom of each of the four studs, and a pad is fixedly installed at the bottom of each of the four knobs.
[0009] Furthermore, the moving mechanism includes a fixed frame, which is fixedly installed on the bottom of the workbench. A bidirectional screw is rotatably installed inside the fixed frame. Two moving plates are threadedly installed on the outer wall of the bidirectional screw, and the moving plates are slidably installed on the workbench and the fixed frame. A motor is fixedly installed on one side of the fixed frame, and the bidirectional screw is fixedly installed at the output end of the motor.
[0010] Furthermore, four fixed plates are fixedly installed on the surfaces of the two movable plates, and eight shafts are fixedly installed on the surfaces of the eight fixed plates. Movable rollers are rotatably installed on the outer walls of the eight shafts, and the movable rollers are in contact with the surface of the worktable.
[0011] Furthermore, the fixing mechanism includes two L-shaped plates, which are fixedly installed on the top of the movable plate. A cylinder is fixedly installed on the top of each of the two L-shaped plates, and the telescopic ends of the cylinders are slidably installed on the L-shaped plates. A pressure plate is fixedly installed on the telescopic ends of each of the two cylinders.
[0012] Furthermore, friction pads are fixedly installed on the surfaces of both movable plates and pressure plates. The friction pads are composed of a rubber substrate and a metal wire mesh, and the rubber substrate and the metal wire mesh are embedded and fixedly connected.
[0013] The beneficial effects of this utility model are as follows:
[0014] This utility model, through the setting of a leveling mechanism, a moving mechanism, and a fixing mechanism, adjusts the contact with the ground according to the flatness of the ground to avoid local suspension and affect the stability of the support. Then, the steel plate is placed on the support plate, and the moving mechanism adjusts the contact with the steel plate. Then, according to the thickness of the steel plate, the fixing mechanism presses the steel plate onto the moving mechanism to press and fix the steel plate. At this time, the position distance is adjusted by the moving mechanism. Since the steel plate is fixed, a tensile force is applied to the steel plate, thus performing a tensile test on the steel plate. The bonding strength of the non-expanding fireproof coating is tested. If the bonding strength is too low, cracking is likely to occur. Therefore, the crack resistance performance of the non-expanding fireproof coating is tested, which can be adapted to the testing of steel plates of various widths and thicknesses. The operation is simple, highly flexible, and highly practical. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a schematic diagram of the structure of the stud of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the movable plate of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the movable roller of this utility model.
[0019] Reference numerals in the attached drawings: 1. Workbench; 2. Support column; 3. Leveling mechanism; 301. Stud; 302. Knob; 303. Foot pad; 4. Fixed base; 5. Shelf plate; 6. Moving mechanism; 601. Fixed frame; 602. Double-acting screw; 603. Moving plate; 604. Fixed plate; 605. Shaft column; 606. Moving roller; 607. Motor; 7. Fixed mechanism; 701. L-shaped plate; 702. Cylinder; 703. Pressure plate; 704. Friction pad. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0023] The electrical components mentioned in this article are all connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can be used for control.
[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] like Figure 1-2As shown, a crack resistance testing device for non-expansion fire-retardant coatings includes a workbench 1, a fixed base 4 on the top of the workbench 1, a shelf 5 on the top of the fixed base 4, and a support column 2 at the bottom of the workbench 1. A leveling mechanism 3 for adjusting height is provided on the support column 2. Specifically, the leveling mechanism 3 includes four studs 301, the number of support columns 2 is four, and the four studs 301 are threaded onto the four support columns 2 respectively. A knob 302 is fixedly installed at the bottom of each of the four studs 301, and a foot 303 is fixedly installed at the bottom of each of the four knobs 302.
[0026] More specifically, depending on the flatness of the ground, by rotating the knob 302, the stud 301 and the pad 303 are rotated and moved longitudinally, so that the pad 303 contacts the ground, supplementing the suspended part and improving the stability of the support.
[0027] like Figure 1-4 As shown, the workbench 1 is equipped with a moving mechanism 6 for adjusting the position distance. Specifically, the moving mechanism 6 includes a fixed frame 601, which is fixedly installed at the bottom of the workbench 1. A bidirectional screw 602 is rotatably installed inside the fixed frame 601. Two moving plates 603 are threadedly installed on the outer wall of the bidirectional screw 602, and the moving plates 603 are slidably installed on the workbench 1 and the fixed frame 601. A motor 607 is fixedly installed on one side of the fixed frame 601, and the bidirectional screw 602 is fixedly installed at the output end of the motor 607. Four fixed plates 604 are fixedly installed on the surface of each of the two moving plates 603. Eight shafts 605 are fixedly installed on the surface of the eight fixed plates 604. Moving rollers 606 are rotatably installed on the outer wall of each of the eight shafts 605, and the moving rollers 606 are in contact with the surface of the workbench 1.
[0028] More specifically, by starting the motor 607, the bidirectional screw 602 is driven to rotate, causing the two moving plates 603 to move closer to or further apart from each other. This, in turn, causes the moving roller 606 to roll on the worktable 1. The moving roller 606 increases the load-bearing capacity of the moving plates 603 without obstructing their movement, thereby adjusting the distance between the two moving plates 603.
[0029] like Figure 1-4 As shown, the moving mechanism 6 is equipped with a fixing mechanism 7 for pressing and fixing the steel plate; as Figure 3As shown, specifically, the fixing mechanism 7 includes two L-shaped plates 701, which are fixedly installed on the top of the movable plate 603. A cylinder 702 is fixedly installed on the top of each of the two L-shaped plates 701, and the telescopic ends of the cylinders 702 are slidably installed on the L-shaped plates 701. A pressure plate 703 is fixedly installed on the telescopic ends of the two cylinders 702. Friction pads 704 are fixedly installed on the surfaces of the two movable plates 603 and the pressure plate 703. The friction pads 704 are composed of a rubber substrate and a metal wire mesh, and the rubber substrate and the metal wire mesh are embedded and fixedly connected.
[0030] More specifically, when the steel plate is placed on the two moving plates 603, the two cylinders 702 are activated, which will drive the two pressure plates 703 to move downwards. The friction pad 704 will fit tightly against the steel plate. Since the rubber matrix is embedded with metal mesh to form the friction pad 704, it has both elasticity and rigidity. The metal mesh can disperse the pressure and prevent the rubber from being over-compressed. The surface rubber provides a high coefficient of friction and enhances the stability of the fixation.
[0031] In summary, during use, the leveling mechanism 3 is adjusted to ensure contact with the ground based on the flatness of the ground, avoiding localized suspension that could affect the stability of the support. The steel plate is then placed on the placement plate 5, and the moving mechanism 6 is used to adjust the contact with the steel plate. Based on the thickness of the steel plate, the fixing mechanism 7 presses the steel plate onto the moving mechanism 6, securing it firmly. The position distance is then adjusted via the moving mechanism 6. Since the steel plate is fixed, a tensile force is applied, thus performing a tensile test on the steel plate. The bonding strength of the non-expanding fireproof coating is tested; if the bonding strength is too low, cracking is likely. Therefore, the crack resistance performance of the non-expanding fireproof coating is tested, adapting to various specifications of width and thickness for testing. The operation is simple, highly flexible, and practical.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for testing the crack resistance performance of non-intumescent fire-retardant coatings, comprising a workbench (1), characterized in that, The workbench (1) is provided with a fixed seat (4) on top, and a shelf (5) is provided on top of the fixed seat (4). The workbench (1) is provided with a support column (2) at the bottom. The support column (2) is provided with a leveling mechanism (3) for adjusting the height auxiliary support. The workbench (1) is provided with a moving mechanism (6) for adjusting the position distance. The moving mechanism (6) is provided with a fixing mechanism (7) for pressing and fixing the steel plate.
2. The crack resistance testing device for non-intumescent fire-retardant coatings according to claim 1, characterized in that, The leveling mechanism (3) includes four studs (301), the number of the support column (2) is set to four, and the four studs (301) are threadedly installed on the four support columns (2). A knob (302) is fixedly installed on the bottom of each of the four studs (301), and a pad (303) is fixedly installed on the bottom of each of the four knobs (302).
3. The crack resistance testing device for non-intumescent fire-retardant coatings according to claim 1, characterized in that, The moving mechanism (6) includes a fixed frame (601), which is fixedly installed at the bottom of the workbench (1). A bidirectional screw (602) is rotatably installed inside the fixed frame (601). Two moving plates (603) are threadedly installed on the outer wall of the bidirectional screw (602), and the moving plates (603) are slidably installed on the workbench (1) and the fixed frame (601). A motor (607) is fixedly installed on one side of the fixed frame (601), and the bidirectional screw (602) is fixedly installed at the output end of the motor (607).
4. The crack resistance testing device for non-intumescent fire-retardant coatings according to claim 3, characterized in that, Four fixed plates (604) are fixedly installed on the surfaces of the two movable plates (603), and eight shafts (605) are fixedly installed on the surfaces of the eight fixed plates (604). Movable rollers (606) are rotatably installed on the outer walls of the eight shafts (605), and the movable rollers (606) are in contact with the surface of the worktable (1).
5. The crack resistance testing device for non-intumescent fire-retardant coatings according to claim 3, characterized in that, The fixing mechanism (7) includes two L-shaped plates (701), which are fixedly installed on the top of the movable plate (603). A cylinder (702) is fixedly installed on the top of each of the two L-shaped plates (701), and the telescopic end of the cylinder (702) is slidably installed on the L-shaped plate (701). A pressure plate (703) is fixedly installed on the telescopic end of each of the two cylinders (702).
6. The crack resistance testing device for non-intumescent fire-retardant coatings according to claim 5, characterized in that, Friction pads (704) are fixedly installed on the surfaces of the two movable plates (603) and the pressure plate (703). The friction pads (704) are composed of a rubber matrix and a metal wire mesh, and the rubber matrix and the metal wire mesh are embedded and fixedly connected.