A device for testing the crack resistance of a fireproof paint

Abstract

The utility model discloses a fire -retardant paint crack resistance testing arrangement belongs to paint test field, including bottom plate, and the bottom plate is fixedly connected with the test box, and the test box one end is provided with the blower mechanism, and the bottom plate is detachably connected with a plurality of groups of rotating mechanism in, and the rotating mechanism includes the pivot, and the pivot is fixedly connected with a plurality of groups of connecting frame, and the connecting frame is fixedly connected with the coating plate on, and the coating plate is polygonal and sets up, and a plurality of separating strips are fixedly connected on the coating plate. Beneficial effects lie in: set up multiple test cavities, rotating mechanism and docking mechanism, can accommodate multiple rotating mechanism through multiple test cavities, and carry out crack resistance test to multiple groups of fire -retardant paint through the coating plate of polygonal setting, improve the test efficiency, through the setting of docking mechanism and drive mechanism, can make the coating plate reciprocating rotation when carrying out crack resistance test, can simulate different conditions and carry out crack resistance test, improve the reliability of test result.

Description

Technical Field

[0001] This utility model relates to the field of coating testing, and in particular to a device for testing the crack resistance of fire-retardant coatings. Background Technology

[0002] Coatings refer to the general term for materials that can form a tough protective film when applied to the surface of an object. With the development of society, coatings occupy an increasingly important position in people's lives and are being used more and more widely. At present, in addition to paying attention to the health, environmental protection and decorative properties of coatings, people are also paying more and more attention to the functionality of coatings. Coatings undergo a variety of tests and experiments during the production process before they can leave the factory.

[0003] A search revealed Chinese Patent Publication No. CN220490826U, which discloses a device for testing the initial drying crack resistance of multi-layer building coatings. This patent includes a wind tunnel, a fan, and a shelf. The shelf comprises an L-shaped ring frame, a support column, and a moving mechanism. The device has multiple L-shaped ring frames arranged from top to bottom for placing asbestos-free fiber cement boards. The fan then performs an initial drying crack resistance test on the coating on the asbestos-free fiber cement boards located on the L-shaped ring frames. This device can place multiple layers of asbestos-free fiber cement boards on the shelf from top to bottom, thus avoiding the problem of the front object blocking the rear object, leading to poor testing results. The multi-layer placement also allows for sufficient comparison after testing. The moving mechanism facilitates the displacement of the shelf. However, current crack resistance testing devices for fire-retardant coatings struggle to simultaneously conduct crack resistance tests on multiple coatings, and these coatings may interfere with each other, affecting the test results. Furthermore, it is difficult to simulate crack resistance tests under different conditions, impacting the reliability of the test results and compromising testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a fire-retardant coating crack resistance testing device in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A fire-retardant coating crack resistance testing device includes a base plate, a test chamber fixedly connected to the base plate, a blower mechanism at one end of the test chamber, several sets of rotating mechanisms detachably connected inside the base plate, each rotating mechanism including a rotating shaft, several sets of connecting frames fixedly connected to the rotating shaft, and a coating plate fixedly connected to the connecting frames. The coating plate is polygonal in shape and has several dividing strips fixedly connected to it. A docking mechanism is provided at both ends of the rotating shaft, each docking mechanism including a docking block slidably connected to both ends of the rotating shaft. An elastic component is provided between the docking block and the rotating shaft. A docking shaft that mates with the docking block is rotatably connected to the test chamber. A drive mechanism for driving the rotating shaft to rotate is provided on the side of the test chamber. A closing mechanism is movably provided at a position of the test chamber away from the blower mechanism.

[0007] Preferably, the elastic component includes a spring, which is installed between the rotating shaft and the mating block. The mating block has a polygonal cross-section, and the two ends of the mating shaft have mating grooves that mate with the mating block.

[0008] Preferably, a groove is provided on the side of the rotating shaft, and a toggle piece is fixedly connected to the side of the mating block, with the toggle piece slidably disposed in the groove.

[0009] Preferably, a notch is provided on one side of the coating plate, and the groove faces the notch of the coating plate.

[0010] Preferably, the drive mechanism includes a fixed plate, which is fixedly connected to the side of the test chamber. A reciprocating lead screw is rotatably connected to the fixed plate, and a motor is fixedly connected to the fixed plate. The output end of the motor is fixedly connected to the reciprocating lead screw. A moving block is threaded onto the reciprocating lead screw, and a rack is fixedly connected to the moving block. A gear meshes with the rack, and a drive shaft is fixedly connected to the gear. The drive shaft is fixedly connected to the outermost mating shaft, and a guide rod is slidably connected to the moving block. The guide rod is fixedly connected to the fixed plate.

[0011] Preferably, the sealing mechanism includes a sealing frame, which is rotatably connected to the test chamber, and a filter screen is fixedly connected to the sealing frame. The test chamber is equipped with a locking component.

[0012] Preferably, the locking component includes a fixing block, which is fixedly connected to the test chamber. A mounting frame is fixedly connected to the fixing block, a pull-out piece is slidably connected to the mounting frame, and a locking block is slidably connected to the pull-out piece. The locking block is fixedly connected to the closed frame.

[0013] The beneficial effects are as follows: multiple test chambers, rotating mechanisms, and docking mechanisms are set up. Multiple test chambers can accommodate multiple rotating mechanisms, and multiple groups of fire-retardant coatings can be tested for crack resistance using a polygonal coating plate, which improves the testing efficiency. The docking mechanism and drive mechanism enable the coating plate to rotate back and forth during the crack resistance test, which can simulate different conditions and improve the reliability of the test results.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of a fire-retardant coating crack resistance testing device according to the present invention;

[0017] Figure 2 This is another schematic diagram of the fire-retardant coating crack resistance testing device described in this utility model;

[0018] Figure 3 This is a cross-sectional view of the fire-retardant coating crack resistance testing device described in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the test chamber of the fire-retardant coating crack resistance testing device described in this utility model;

[0020] Figure 5 This is a cross-sectional view of the rotating mechanism of the fire-retardant coating crack resistance testing device described in this utility model;

[0021] Figure 6 This is a schematic diagram of the closed mechanism structure of the fire-retardant coating crack resistance testing device described in this utility model.

[0022] The reference numerals in the attached drawings are explained as follows: 101, base plate; 102, test chamber; 103, test cavity; 104, connecting shell; 201, hot air blower; 202, dispersion tube; 203, air blowing tube; 204, valve; 301, rotating shaft; 302, connecting frame; 303, coating plate; 304, separator strip; 305, slide groove; 306, spring; 401, docking block; 402, actuating piece; 403, docking shaft; 404, docking groove; 501, fixing plate; 502, reciprocating lead screw; 503, motor; 504, moving block; 505, rack; 506, gear; 507, drive shaft; 508, guide rod; 601, enclosed frame; 602, filter screen; 603, fixing block; 604, mounting frame; 605, pull-out piece; 606, locking block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figure 1 — Figure 6 As shown, a fire-retardant coating crack resistance testing device includes a base plate 101, a test chamber 102 bolted to the base plate 101, several test chambers 103 inside the test chamber 102, and a blower mechanism at one end of the test chamber 102. Each blower mechanism is located in one test chamber 103. Several sets of rotating mechanisms are detachably connected to the base plate 101. Each rotating mechanism includes a rotating shaft 301, several sets of connecting frames 302 bolted to the rotating shaft 301, and coating plates 303 bolted to the connecting frames 302. The coating plates 303 are polygonal in shape, and the arrangement of the coating plates 303 allows for simultaneous crack resistance testing of multiple fire-retardant coatings. Furthermore, the test can simulate the heating and wind conditions under different circumstances to obtain more reasonable and scientific crack resistance test data. Several partition strips 304 are connected to the coating plate 303 by bolts. The two ends of the rotating shaft 301 are provided with docking mechanisms, including docking blocks 401. The docking blocks 401 are slidably connected to the two ends of the rotating shaft 301. An elastic component is provided between the docking blocks 401 and the rotating shaft 301. The test chamber 102 is rotatably connected with a docking shaft 403 that cooperates with the docking blocks 401. The side of the test chamber 102 is provided with a drive mechanism for driving the rotating shaft 301 to rotate. The test chamber 102 is movably provided with a closing mechanism at a position away from the blower mechanism.

[0027] In this embodiment, one end of the test chamber 102 is connected to a connecting shell 104 by bolts. The blowing mechanism includes a hot air blower 201. A dispersing pipe 202 is inserted into the air outlet end of the hot air blower 201. Several blowing pipes 203 are inserted into the dispersing pipe 202. The end of the blowing pipe 203 away from the dispersing pipe 202 is connected to the connecting shell 104 by bolts. A valve 204 is connected to the blowing pipe 203 by bolts.

[0028] In this embodiment, the elastic component includes a spring 306, which is installed between the rotating shaft 301 and the docking block 401. The docking block 401 has a polygonal cross-section, and the docking shaft 403 has docking grooves 404 at both ends that cooperate with the docking block 401. The spring 306 allows the docking block 401 to slide into the rotating shaft 301. In this way, the rotating shaft 301 can be easily installed on the docking block 401, achieving quick assembly and disassembly, and facilitating observation of the paint cracking on the coating plate 303.

[0029] In this embodiment, a sliding groove 305 is provided on the side of the rotating shaft 301, and a toggle piece 402 is bolted to the side of the docking block 401. The toggle piece 402 is slidably disposed in the sliding groove 305. The toggle piece 402 can drive the docking block 401 to move in the sliding groove 305, so that the docking block 401 can be disengaged from or enter the docking groove 404, thereby realizing the function of convenient disassembly.

[0030] In this embodiment, a notch is provided on one side of the coating plate 303, and the slide groove 305 faces the notch of the coating plate 303. When disassembling the rotating shaft 301, the operator can reach into the rotating shaft 301 from the notch of the coating plate 303 and move the actuating piece 402 to make the mating block 401 disengage from the mating groove 404, thereby removing the rotating shaft 301 from the mating shaft 403.

[0031] In this embodiment, the drive mechanism includes a fixed plate 501, which is bolted to the side of the test chamber 102. A reciprocating lead screw 502 is rotatably connected to the fixed plate 501. A motor 503 is bolted to the fixed plate 501, and the output end of the motor 503 is connected to the reciprocating lead screw 502 via a coupling. A moving block 504 is threaded onto the reciprocating lead screw 502, and a rack 505 is bolted to the moving block 504. The length of the reciprocating lead screw 502 is related to the length of the gear 506. With matching diameters, the coating plate 303 inside the test chamber 102 can be rotated to the notch position and then reversed, so as to uniformly test the crack resistance of the coating on multiple surfaces of the coating plate 303. A gear 506 meshes on the rack 505, and a drive shaft 507 is bolted to the gear 506. The drive shaft 507 is bolted to the outermost mating shaft 403. A guide rod 508 is slidably connected to the moving block 504, and the guide rod 508 is bolted to the fixed plate 501.

[0032] In this embodiment, the sealing mechanism includes a sealing frame 601, which is rotatably connected to the test chamber 102. A filter screen 602 is bolted to the sealing frame 601. The filter screen 602 plays a certain role in separating the inside and outside of the test chamber 102 to prevent the test environment from being contaminated. A locking component is provided on the test chamber 102.

[0033] In this embodiment, the locking component includes a fixing block 603, which is bolted to the test chamber 102. A mounting frame 604 is bolted to the fixing block 603. A pull-out piece 605 is slidably connected to the mounting frame 604. A locking block 606 is slidably connected to the pull-out piece 605. The locking block 606 is welded to the closed frame 601.

[0034] Working principle: In the initial state of use, the rotating mechanism is located outside the test chamber 102. The paint to be tested is evenly brushed onto each surface of the coating plate 303. Then, the pull-out piece 605 is moved to disengage from the locking block 606. At this time, the closing frame 601 can be flipped downward from the test chamber 102. Then, the rotating shaft 301 is held and the coating plates 303 are placed into the test chamber 103 one by one, so that the mating block 401 corresponds to the mating groove 404. The actuating piece 402 is moved, and the actuating piece 404... 02 can drive the docking block 401 to move into the interior of the rotating shaft 301. At this time, the spring 306 is compressed, which can easily insert the docking block 401 into the docking groove 404. In this way, each coated painting plate 303 is installed into the test chamber 102. Then, the sealing frame 601 is closed, and the locking block 606 is locked using the pull-out piece 605. The hot air blower 201 and the motor 503 are started, and each valve 204 is opened. The hot air blower 201 blows hot air into the test chamber through the dispersion pipe 202 and the air blowing pipe 203. Inside 103, when the motor 503 starts, the output shaft of the motor 503 drives the reciprocating screw 502 to rotate. When the reciprocating screw 502 rotates, it drives the moving block 504 to reciprocate along the axial direction of the guide rod 508. The moving block 504 drives the gear 506 to rotate via the rack 505. The gear 506 drives the drive shaft 507 to rotate, and the rotation occurs in a reciprocating motion within a certain angle. The drive shaft 507 is connected to the rotating shaft 301 via the docking block 401, driving all the connecting brackets 302 and the coating plate 303 to rotate. The rotation of the brush plate 303 allows each of its surfaces to face the direction of the hot airflow at different angles, simulating the crack resistance test of fire-retardant coatings under different conditions. This improves the scientific rigor and rationality of the test, and allows for simultaneous execution of multiple sets of tests, quickly obtaining multiple test results and effectively improving test efficiency. After a period of testing, the closed frame 601 is opened, the actuating piece 402 is moved to disengage the mating block 401 from the mating groove 404, the rotating shaft 301 is removed, and the cracking of the coating on the mating shaft 403 is observed to obtain the test results.

[0035] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power (or 380V industrial power), and the main controller can be a conventional known device such as a computer that provides control.

[0036] 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 illustrative of the 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.

Claims

1. A fire-retardant coating crack resistance testing device, comprising a base plate (101), wherein a test chamber (102) is fixedly connected to the base plate (101), and a blower mechanism is provided at one end of the test chamber (102), characterized in that: The base plate (101) is detachably connected to several sets of rotating mechanisms. Each rotating mechanism includes a rotating shaft (301), on which several sets of connecting frames (302) are fixedly connected. Each connecting frame (302) is fixedly connected to a coating plate (303). The coating plate (303) is polygonal in shape and has several dividing strips (304) fixedly connected. The rotating shaft (301) has docking mechanisms at both ends, each docking mechanism including docking blocks (4). 01), the docking block (401) is slidably connected to both ends of the rotating shaft (301), an elastic component is provided between the docking block (401) and the rotating shaft (301), the test chamber (102) is rotatably connected to the docking shaft (403) that cooperates with the docking block (401), the side of the test chamber (102) is provided with a driving mechanism for driving the rotating shaft (301) to rotate, and the test chamber (102) is movably provided with a closing mechanism at a position away from the blowing mechanism.

2. The fire-retardant coating crack resistance testing device according to claim 1, characterized in that: The elastic component includes a spring (306), which is installed between the rotating shaft (301) and the docking block (401). The docking block (401) has a polygonal cross-section, and the docking shaft (403) has docking grooves (404) at both ends that cooperate with the docking block (401).

3. The fire-retardant coating crack resistance testing device according to claim 1, characterized in that: The rotating shaft (301) has a sliding groove (305) on its side, and the docking block (401) has a toggle piece (402) fixedly connected to its side. The toggle piece (402) is slidably disposed in the sliding groove (305).

4. The fire-retardant coating crack resistance testing device according to claim 3, characterized in that: The coating plate (303) has a notch on one side, and the groove (305) faces the notch of the coating plate (303).

5. The fire-retardant coating crack resistance testing device according to claim 1, characterized in that: The driving mechanism includes a fixed plate (501) fixedly connected to the side of the test chamber (102), a reciprocating lead screw (502) rotatably connected to the fixed plate (501), a motor (503) fixedly connected to the fixed plate (501), the output end of the motor (503) fixedly connected to the reciprocating lead screw (502), a moving block (504) threadedly connected to the reciprocating lead screw (502), a rack (505) fixedly connected to the moving block (504), a gear (506) meshing on the rack (505), a drive shaft (507) fixedly connected to the gear (506), the drive shaft (507) fixedly connected to the outermost docking shaft (403), and a guide rod (508) slidably connected to the moving block (504), the guide rod (508) fixedly connected to the fixed plate (501).

6. The fire-retardant coating crack resistance testing device according to claim 1, characterized in that: The sealing mechanism includes a sealing frame (601), which is rotatably connected to the test chamber (102). A filter screen (602) is fixedly connected to the sealing frame (601), and a locking component is provided on the test chamber (102).

7. The fire-retardant coating crack resistance testing device according to claim 6, characterized in that: The locking assembly includes a fixing block (603) which is fixedly connected to the test chamber (102). A mounting frame (604) is fixedly connected to the fixing block (603). A pull-out piece (605) is slidably connected to the mounting frame (604). A locking block (606) is slidably connected to the pull-out piece (605). The locking block (606) is fixedly connected to the closed frame (601).

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