Cracking resistance testing device for asphalt waterproof coating

Abstract

The utility model discloses an asphalt waterproof coating anti-cracking performance testing device which comprises a workbench, a testing box is fixedly installed on the top of the workbench, an installation plate is fixedly installed in the testing box, and two supporting plates are fixedly installed on the inner wall of the top of the workbench and the inner wall of the top of the testing box respectively. Mounting grooves are formed in the inner walls of the top of the workbench and the top of the test box, cameras are fixedly mounted in the two mounting grooves, an extrusion mechanism for extruding a test plate is arranged on the mounting plate, and the extrusion mechanism comprises a double-head motor, two screw rods, two fixed plates, two movable plates, four guide plates, two pushing plates and two pushing blocks. And a through hole is formed in the mounting plate. The device is reasonable in design, can replace manual work to apply pressure to the two test plates at the same time, keeps the pressure to be stably increased, saves time and labor, improves the detection efficiency, can read the pressure value through the pressure sensor when a crack occurs, and improves the detection accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-cracking test devices, in particular to an anti-cracking test device for an asphalt waterproof coating. Background Art

[0002] In recent years, exterior wall insulation technology has been widely promoted and applied in various regions of my country. Expanded polystyrene board thin-plaster exterior wall insulation systems are widely used. The finishing layer of this system is clearly specified to be a paint finish. Asphalt waterproofing coatings are solvent-based or water-based waterproofing coatings with asphalt as the base material. Solvent-based asphalt waterproofing coatings are prepared by directly dissolving unmodified petroleum asphalt in a solvent such as gasoline, also known as cold primer. Water-based asphalt waterproofing coatings are made by dispersing petroleum asphalt in water with a chemical or mineral emulsifier to form a stable aqueous dispersion.

[0003] A device for testing the crack resistance of a building exterior wall waterproof structure, as disclosed in a Chinese patent announcement with the publication number CN204008424U, has the following technical features: it includes a device base, a screw, a bracket, and a steel top knife. A bracket is provided at the upper end of the base, a screw is provided in the middle of the base, and a steel top knife is connected to the screw and the bracket upward in parallel. The steel top knife is a conical structure, and the number of brackets is at least four. By using this device, the dynamic crack resistance of the building exterior wall waterproof structure can be tested, the degree of dynamic crack resistance of the building exterior wall waterproof structure can be grasped in time, and the quality of the building exterior wall waterproof structure can be ensured, which has a very good effect.

[0004] In actual operation, it was found that the above solution still has at least the following defects: the device can only test one test plate at a time, and the test plate is manually pressurized. When cracks appear on the test plate, the magnitude of the applied force cannot be obtained, and the applied pressure cannot be maintained stably. Therefore, we propose a crack resistance test device for asphalt waterproof coating to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides a crack resistance testing device for asphalt waterproof coatings, which solves the problem that only one test plate can be tested at a time, and pressure is applied to the test plate manually. When cracks appear on the test plate, the magnitude of the applied force cannot be obtained, and the applied pressure cannot be maintained stably.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for testing the anti-cracking properties of asphalt waterproof coatings, comprising a workbench, a test box fixedly installed on the top of the workbench, a mounting plate fixedly installed in the test box, two support plates fixedly installed on the top of the workbench and the top inner wall of the test box, mounting grooves provided on the top of the workbench and the top inner wall of the test box, cameras fixedly installed in the two mounting grooves, and an extrusion mechanism for extruding the test plate provided on the mounting plate.

[0009] Preferably, the extrusion mechanism includes a double-headed motor, two screws, two fixed plates, two movable plates, four guide plates, two pushing plates and two pushing blocks. A through hole is opened on the mounting plate, the double-headed motor is fixedly mounted in the through hole, the two screws are respectively fixedly mounted on the two output shaft ends of the double-headed motor, the two fixed plates are both fixedly mounted in the test box, the ends of the two screws away from each other are rotatably connected to the two fixed plates, the two movable plates are respectively threaded on the two screws, the four guide plates are respectively fixedly mounted on the sides of the two movable plates away from each other and are symmetrically distributed in pairs, the four guide plates slide through the corresponding fixed plates respectively, the two pushing plates are respectively fixedly mounted on the corresponding two guide plates and are symmetrical about the mounting plate, and the two pushing blocks are respectively fixedly mounted on the sides of the two pushing plates away from each other.

[0010] Preferably, pressure sensors are fixedly mounted on the sides of the two pushing blocks that are intended to move away from each other.

[0011] Preferably, a rubber pad is fixedly mounted on one side of the four support plates close to the mounting plate.

[0012] Preferably, the front side of the test box is an open structure and is provided with a box door rotatably mounted via a hinge, an observation window is provided on the box door, and a handle is fixedly mounted on the box door to the right of the observation window.

[0013] Preferably, annular limiting blocks are fixedly mounted on the top and bottom of the mounting plate, and the double-headed motor is located inside the two annular limiting blocks.

[0014] Preferably, tempered glass corresponding to the installation grooves can be detachably installed on the top of the workbench and the top inner wall of the test box.

[0015] (3) Beneficial effects

[0016] The utility model provides a device for testing the crack resistance of asphalt waterproof coatings. It has the following beneficial effects:

[0017] (1) The anti-cracking test device of the asphalt waterproof coating can replace manual labor to apply pressure to two test plates at the same time by utilizing an extrusion mechanism composed of a double-headed motor, two screws, two fixed plates, two movable plates, four guide plates, two push plates and two push blocks, thereby maintaining a stable pressure increase, saving time and labor, and improving detection efficiency. In addition, the pressure sensor can read the pressure value when cracks appear, thereby improving detection accuracy.

[0018] (2) The anti-cracking test device of the asphalt waterproof coating can support and cushion the test plate by utilizing the combined effect of four support plates, four rubber pads and two tempered glasses, and protect the camera when the test plate breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the main view of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model in cross-section.

[0022] In the figure: 1. Workbench; 2. Test box; 3. Mounting plate; 4. Support plate; 5. Mounting slot; 6. Camera; 7. Through hole; 8. Double-head motor; 9. Screw; 10. Fixed plate; 11. Moving plate; 12. Guide plate; 13. Push plate; 14. Push block; 15. Pressure sensor; 16. Rubber pad; 17. Box door; 18. Observation window; 19. Ring limit block; 20. Tempered glass. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-3As shown, the utility model provides a technical solution: a device for testing the anti-cracking property of asphalt waterproof coating, comprising a workbench 1, a test box 2 fixedly installed on the top of the workbench 1, a mounting plate 3 fixedly installed in the test box 2, two support plates 4 fixedly installed on the top inner wall of the workbench 1 and the top of the test box 2, and rubber pads 16 fixedly installed on the side of the four support plates 4 close to the mounting plate 3. The rubber pads 16 can avoid direct contact between the test plate and the support block, increase friction, and prevent the test plate from moving. Mounting grooves 5 are provided on the top of the workbench 1 and the top inner wall of the test box 2, and cameras 6 are fixedly installed in the two mounting grooves 5. It should be noted that the two cameras 6 are connected to an external computer display screen and can synchronously transmit the images of the two test plates to the display screen, which is convenient for observing cracks. The mounting plate 3 is provided with an extrusion mechanism for squeezing the test plate.

[0025] In this embodiment, the extrusion mechanism includes a double-headed motor 8, two screws 9, two fixed plates 10, two movable plates 11, four guide plates 12, two push plates 13 and two push blocks 14. A through hole 7 is opened on the mounting plate 3, and the double-headed motor 8 is fixedly mounted in the through hole 7. The two screws 9 are respectively fixedly mounted on the two output shaft ends of the double-headed motor 8. It should be noted that the thread rotation directions of the two screws 9 are opposite. The two fixed plates 10 are fixedly mounted in the test box 2. The ends of the two screws 9 away from each other are respectively rotatably connected to the two fixed plates 10. The two movable plates 11 are They are respectively threadedly mounted on the two screw rods 9, and the two movable plates 11 can be controlled to move relative to each other by controlling the rotation of the two screw rods 9. The four guide plates 12 are respectively fixedly mounted on the side of the two movable plates 11 away from each other and are symmetrically distributed in pairs. The four guide plates 12 slide through the corresponding fixed plates 10 respectively. The two push plates 13 are respectively fixedly mounted on the corresponding two guide plates 12 and are symmetrical about the mounting plate 3 in the upper and lower parts. The guide plates 12 are used to guide and constrain the movement of the two movable plates 11. The two push blocks 14 are respectively fixedly mounted on the side of the two push plates 13 away from each other.

[0026] In this embodiment, pressure sensors 15 are fixedly mounted on the sides of the two pushing blocks 14 that are intended to be away from each other. The pressure on the test plate can be monitored in real time through the two pressure sensors 15 .

[0027] In this embodiment, tempered glass 20 corresponding to the mounting groove 5 can be removably installed on the top of the above-mentioned workbench 1 and the top inner wall of the test box 2. The tempered glass 20 can protect the camera from impact and dust. The front side of the test box 2 is an opening structure and a box door 17 is installed by hinge rotation. The box door 17 is provided with an observation window 18, and a handle is fixedly installed on the box door 17 to the right of the observation window 18. Annular limit blocks 19 are fixedly installed on the top and bottom of the mounting plate 3. The double-headed motor 8 is located in the two annular limit blocks 19. The two annular limit blocks 19 can limit the moving range of the two movable plates 11.

[0028] In this embodiment, a control switch is installed on the test box 2, and the two cameras 6, the double-headed motor 8, the two pressure sensors 15 and the control switch are electrically connected to the external power line through wires in sequence to form a loop. The control switch can control the start and stop of the two cameras 6, the double-headed motor 8 and the two pressure sensors 15 respectively.

[0029] Through the above structure, the utility model provides an anti-cracking test device for asphalt waterproof coating, which can replace manual labor to apply pressure to two test plates at the same time, maintain a stable pressure increase, save time and labor, improve detection efficiency, and can read the pressure value when cracks appear through the pressure sensor, thereby improving the accuracy of detection. When used, the two test plates coated with asphalt waterproof coating are placed on the top of the two lower support plates 4 and the top of the upper pressure sensor 15 respectively, the box door 17 is closed, the two cameras 6 and the two pressure sensors 15 are controlled to operate, the stress conditions of the two test plates are monitored, and the double-headed motor 8 is controlled. During operation, the double-headed motor 8 drives the two screws 9 to rotate, thereby controlling the two movable plates 11 to move away from each other. The two movable plates 11 control the two pushing plates 13 and the pushing blocks 14 to move away from each other. As the two movable plates 11 continue to move away, the two test plates are clamped and withstand gradually increasing pressure. The pressure value can be read in real time through the pressure sensor 15. When the display screen observes cracks on the surface of the test plate, the pressure value at that time can be read. The operation is simple, time-saving and labor-saving, and the two test plates can be tested at the same time, thereby improving the detection efficiency. The pressure value when cracks appear can be obtained, thereby improving the accuracy of the detection.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A device for testing the crack resistance of asphalt waterproof coatings, characterized by: The invention comprises a workbench (1), a test box (2) is fixedly mounted on the top of the workbench (1), a mounting plate (3) is fixedly mounted in the test box (2), two support plates (4) are fixedly mounted on the top inner wall of the workbench (1) and the top inner wall of the test box (2), mounting grooves (5) are provided on the top of the workbench (1) and the top inner wall of the test box (2), cameras (6) are fixedly mounted in the two mounting grooves (5), and an extrusion mechanism for extruding the test plate is provided on the mounting plate (3).

2. The anti-cracking test device for asphalt waterproof coating according to claim 1, characterized in that: The extrusion mechanism comprises a double-headed motor (8), two screw rods (9), two fixed plates (10), two movable plates (11), four guide plates (12), two push plates (13) and two push blocks (14). A through hole (7) is provided on the mounting plate (3). The double-headed motor (8) is fixedly mounted in the through hole (7). The two screw rods (9) are respectively fixedly mounted on the two output shaft ends of the double-headed motor (8). The two fixed plates (10) are both fixedly mounted in the test box (2). The ends of the two screw rods (9) that are away from each other are respectively connected to the two fixed plates (11). The fixed plate (10) is rotatably connected, the two movable plates (11) are respectively threadedly mounted on the two screw rods (9), the four guide plates (12) are respectively fixedly mounted on the sides of the two movable plates (11) away from each other and are symmetrically distributed in pairs, the four guide plates (12) respectively slide through the corresponding fixed plates (10), the two push plates (13) are respectively fixedly mounted on the corresponding two guide plates (12) and are symmetrical about the mounting plate (3), and the two push blocks (14) are respectively fixedly mounted on the sides of the two push plates (13) away from each other.

3. The anti-cracking test device for asphalt waterproof coating according to claim 2, characterized in that: A pressure sensor (15) is fixedly mounted on the side of the two pushing blocks (14) that are intended to move away from each other.

4. The anti-cracking property testing device for asphalt waterproof coating according to claim 1, characterized in that: A rubber pad (16) is fixedly mounted on one side of each of the four support plates (4) close to the mounting plate (3).

5. The anti-cracking test device for asphalt waterproof coating according to claim 1, characterized in that: The front side of the test box (2) is an open structure and is provided with a box door (17) rotatably mounted via a hinge. The box door (17) is provided with an observation window (18). A handle is fixedly mounted on the box door (17) and is located on the right side of the observation window (18).

6. The anti-cracking property testing device for asphalt waterproof coating according to claim 2, characterized in that: Annular limiting blocks (19) are fixedly mounted on the top and bottom of the mounting plate (3), and the double-headed motor (8) is located inside the two annular limiting blocks (19).

7. The anti-cracking property testing device for asphalt waterproof coating according to claim 1, characterized in that: Tempered glass (20) corresponding to the mounting groove (5) can be detachably mounted on the top of the workbench (1) and the top inner wall of the test box (2).

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