Initial drying crack resistance tester

Abstract

The utility model relates to the technical field of building coating detection, in particular to an initial drying crack resistance tester which comprises a detection box body, multiple groups of first supporting blocks are fixedly connected to the inner walls of the left side and the right side of the detection box body, and two groups of positioning sliding grooves are formed in the positions, located on the upper side of the first supporting block at the front end, of the inner walls of the left side and the right side of the detection box body. Second supporting blocks are fixedly connected to the positions, located on the lower sides of the positioning sliding grooves, of the surfaces of the left side and the right side of the detection box body, pressing plates are slidably connected into the positioning sliding grooves, locking screws are fixedly connected to the upper surfaces of the second supporting blocks, the outer ends of the pressing plates are slidably connected with the locking screws, and locking nuts are in threaded connection with the surfaces of the locking screws. A detection sample plate is placed on the upper surface of the supporting net, then a locking nut is rotated, the locking nut is rotated downwards, at the moment, a pressing plate is extruded downwards, and an anti-skid cushion block and a first supporting block are matched to lock and fix the front end of the detection sample plate.

Description

Technical Field

[0001] The utility model relates to the technical field of building coating detection, in particular to an initial drying crack resistance tester. Background Technique

[0002] The initial drying crack resistance testing machine mainly consists of an axial flow fan, a test wind tunnel, a specimen holder, an air volume controller, a timer and an anemometer. Its working principle is to place a test panel coated with paint parallel to the air flow direction in the wind tunnel, start the axial flow fan, control the wind speed within a certain range with the air volume controller, and adjust the drying control time; after the predetermined time, the testing machine automatically stops, take out the test panel from the wind tunnel, and observe whether cracks appear on the surface of the test panel.

[0003] Among them, the publication number CN211042649U discloses an initial drying crack resistance testing machine, which includes a wind tunnel, a fan arranged on one side of the wind tunnel and a control cabinet arranged on the upper end of the wind tunnel. The fan includes a wind cylinder, a motor shaft arranged in the wind tunnel and a fan blade connected to the motor shaft. First bearing sleeves and second bearing sleeves are respectively arranged at both ends of the motor shaft. The fan blade is fixed on the first bearing sleeve, the first bearing sleeve is rotatably connected to the motor shaft, and a support assembly is arranged on the second bearing sleeve. The support assembly is connected to the side of the wind cylinder away from the wind tunnel. The utility model has the effect that the fan is easy to disassemble.

[0004] This device places the test panel on the placement rack and blows the test panel through the fan. However, due to continuous blowing on the test panel, and the test panel is directly placed above the placement rack, the position of the test panel is likely to be shifted by the blowing of the fan during the blowing process, thereby affecting the accuracy of subsequent detection.

[0005] Therefore, it is very necessary to invent an initial drying crack resistance tester to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an initial drying crack resistance tester to solve the problem that in the technology, the test panel is directly placed above the placement rack, and the position of the test panel is likely to be shifted by the blowing of the fan during the detection process.

[0007] To achieve the above object, the present utility model provides the following technical solution: An initial drying crack resistance tester, comprising a detection box body, wherein a plurality of first support blocks are fixedly connected to the inner walls on the left and right sides of the detection box body, two groups of positioning chutes are provided at positions above the front-end first support blocks on the inner walls on the left and right sides of the detection box body, second support blocks are fixedly connected to the surfaces on the left and right sides of the detection box body at positions below the positioning chutes, a pressing plate is slidably connected inside the positioning chutes, a locking screw is fixedly connected to the upper surface of the second support block, the outer end of the pressing plate is slidably connected to the locking screw, and a locking nut is threadedly connected to the surface of the locking screw.

[0008] By adopting the above technical solution, rotate the locking nut to press the pressing plate downward, and cooperate with the first support block to lock the front end of the sample plate, so as to avoid the sample plate from shifting during the detection process and improve the subsequent detection accuracy.

[0009] Optionally, a support spring is fixedly connected to the inner bottom wall of the positioning chute, and the upper end of the support spring is fixedly connected to the lower surface of the pressing plate.

[0010] By adopting the above technical solution, when the locking nut is rotated upward, the support spring will automatically bounce the pressing plate upward.

[0011] Optionally, an anti-slip pad is fixedly connected to the position of the inner side end of the lower surface of the pressing plate.

[0012] By adopting the above technical solution, the anti-slip pad improves the connection stability.

[0013] Optionally, a support plate is slidably connected to the upper surface of the first support block.

[0014] Optionally, two groups of positioning blocks are fixedly connected to the position of the lower surface of the support plate close to the front end, and the positioning blocks are stuck on the outside of the front-end first support block.

[0015] By adopting the above technical solution, the positioning blocks are stuck on the outside of the first support block to improve the stability of the support plate.

[0016] Optionally, a support net is fixedly connected to the inner side surface of the support plate, and a detection sample plate is arranged above the support net.

[0017] By adopting the above technical solution, the support net is used to place the detection sample plate, and at the same time reduces the overall mass of the support plate, facilitating its disassembly.

[0018] Optionally, four axial flow fans are fixedly installed at the rear end of the detection box body.

[0019] Optionally, a control box body is fixedly connected to the position of the upper surface of the detection box body close to the rear end.

[0020] By adopting the above technical solution, the control box controls four groups of fans to blow air on the test sample.

[0021] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0022] 1. In the present utility model, a pressing plate is slidably connected inside the positioning chute, a locking screw is fixedly connected to the upper surface of the second support block, the outer end of the pressing plate is slidably connected to the locking screw, and a locking nut is threadedly connected to the surface of the locking screw. By rotating the locking nut, the pressing plate is pressed downward, and in cooperation with the first support block, the front end of the sample is locked, avoiding the deviation of the sample during the detection process, improving the detection accuracy, and solving the problem that the test plate is directly placed above the placement rack, and the position of the test plate is easily shifted by the blowing of the fan during the detection process, thereby affecting the detection accuracy.

[0023] 2. In the present utility model, a support spring is fixedly connected to the inner bottom wall of the positioning chute, and the upper end of the support spring is fixedly connected to the lower surface of the pressing plate. When the locking nut is rotated upward, the support spring will automatically bounce the pressing plate upward, facilitating the removal of the test sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0026] Figure 3 is a schematic diagram of the positioning chute structure of the present utility model;

[0027] Figure 4 is a schematic diagram of the pressing plate structure of the present utility model;

[0028] Figure 5 is a schematic diagram of the support plate structure of the present utility model.

[0029] Description of the reference numerals:

[0030] 1. Detection box; 11. Axial flow fan; 12. Control box; 13. Positioning chute; 2. First support block; 21. Second support block; 22. Pressing plate; 23. Support spring; 24. Anti-slip pad; 25. Locking screw; 26. Locking nut; 3. Support plate; 31. Support net; 32. Positioning block; 33. Test sample. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] The present utility model provides an initial drying anti-cracking tester as shown in Figures 1 to 5 Figure 4, which includes a detection box body 1. On the inner walls of the left and right sides of the detection box body 1, a plurality of groups of first support blocks 2 are fixedly connected. At the positions above the first support blocks 2 at the front end on the inner walls of the left and right sides of the detection box body 1, two groups of positioning chutes 13 are respectively provided. At the positions below the positioning chutes 13 on the left and right side surfaces of the detection box body 1, second support blocks 21 are fixedly connected. A pressing plate 22 is slidably connected inside the positioning chute 13. A locking screw 25 is fixedly connected to the upper surface of the second support block 21. The outer end of the pressing plate 22 is slidably connected with the locking screw 25. A locking nut 26 is threadedly connected to the surface of the locking screw 25. A support spring 23 is fixedly connected to the inner bottom wall of the positioning chute 13. The upper end of the support spring 23 is fixedly connected to the lower surface of the pressing plate 22. An anti-slip pad 24 is fixedly connected to the lower surface of the pressing plate 22 at the position of the inner end. A support plate 3 is slidably connected to the upper surface of the first support block 2. At the position near the front end of the lower surface of the support plate 3, two groups of positioning blocks 32 are fixedly connected. The positioning blocks 32 are stuck outside the front first support block 2. A support net 31 is fixedly connected to the inner side surface of the support plate 3. Above the support net 31, a detection template 33 is provided.

[0033] Among them, during the use process, the support plate 3 is erected on the surface of the first support block 2. Then, the positioning blocks 32 are stuck outside the two front first support blocks 2. Next, the detection template 33 is placed on the upper surface of the support net 31. The support net 31 and the support plate 3 cooperate to support the detection template 33. At the same time, the front end of the detection template 33 is adjusted to the lower side of the pressing plate 22. Then, the locking nut 26 is rotated, and the locking nut 26 is rotated downward. At this time, the pressing plate 22 is pressed downward. The anti-slip pad 24 and the first support block 2 cooperate to lock and fix the front end of the detection template 33, improving the stability of the detection template 33 during the detection process.

[0034] Refer to Figure 1 Figure 5, four axial flow fans 11 are fixedly installed at the rear end of the detection box body 1. A control box body 12 is fixedly connected to the upper surface of the detection box body 1 near the rear end.

[0035] Specifically, after the detection template 33 is fixed, the four axial flow fans 11 are started through the control box body 12. The four axial flow fans 11 blow air into the detection box body 1 to blow the detection template 33 inside.

[0036] Working principle of the utility model: In order to improve the stability of the test template 33 during the detection process and improve the detection accuracy, the test template 33 is placed on the upper surface of the support mesh 31, and then the locking nut 26 is rotated. The locking nut 26 is rotated downward. At this time, the pressing plate 22 is pressed downward, and the anti-slip cushion block 24 and the first support block 2 cooperate to lock and fix the front end of the test template 33, improving the stability of the test template 33 during the detection process.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. An initial drying crack resistance tester, comprising a detection box (1), characterized in that: The inner walls on the left and right sides of the detection box (1) are fixedly connected to a plurality of first support blocks (2); the inner walls on the left and right sides of the detection box (1) are provided with two groups of positioning grooves (13) at positions above the first support blocks (2) at the front end; the surfaces on the left and right sides of the detection box (1) are fixedly connected to second support blocks (21) at positions below the positioning grooves (13); a pressing plate (22) is slidably connected inside the positioning grooves (13); a locking screw (25) is fixedly connected to the upper surface of the second support block (21); the outer end of the pressing plate (22) is slidably connected to the locking screw (25); and a locking nut (26) is threadedly connected to the surface of the locking screw (25).

2. The initial drying crack resistance tester according to claim 1, characterized in that: A support spring (23) is fixedly connected to the inner bottom wall of the positioning slide groove (13), and the upper end of the support spring (23) is fixedly connected to the lower surface of the pressing plate (22).

3. An initial drying crack resistance tester according to claim 2, characterized in that: An anti-slip pad (24) is fixedly connected to a position at one inner end of the lower surface of the pressing plate (22).

4. The initial drying crack resistance tester according to claim 1, characterized in that: A support plate (3) is slidably connected to the upper surface of the first support block (2).

5. The initial drying crack resistance tester according to claim 4, characterized in that: Two groups of positioning blocks (32) are fixedly connected to the lower surface of the support plate (3) near the front end, and the positioning blocks (32) are clamped on the outside of the first support block (2) at the front end.

6. An initial drying crack resistance tester according to claim 5, characterized in that: A support net (31) is fixedly connected to the inner surface of the support plate (3), and a detection sample (33) is arranged above the support net (31).

7. The initial drying crack resistance tester according to claim 1, characterized in that: Four groups of axial flow fans (11) are fixedly mounted on the rear end of the detection box (1).

8. The initial drying crack resistance tester according to claim 1, characterized in that: A control box (12) is fixedly connected to the upper surface of the detection box (1) near the rear end.

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