A rain and fog environment simulation device for detecting retroreflection coefficient of flexible materials

Abstract

The present invention relates to the field of material testing equipment, and in particular to a rain and fog environment simulation device for detecting the retroreflection coefficient of flexible materials, comprising a workbench, a horizontal rotating table is rotatably arranged at the upper end of the workbench, a driving mechanism for driving the horizontal rotating table to rotate is arranged in the workbench, an L-shaped support rod is arranged at the upper end of the horizontal rotating table, a lifting and sliding mechanism is arranged on the vertical arm of the support rod, a connecting arm is arranged on the lifting and sliding mechanism, a connecting frame is rotatably arranged at the end of the connecting arm, a rotating motor for driving the connecting frame to rotate is arranged in the connecting arm, a sample carrying component is arranged in the middle of the connecting frame, a rain and fog simulation component is also arranged on the connecting frame, a cylindrical glass cover is arranged at the upper end of the workbench, an opening is arranged on one side of the glass cover, a glass door is arranged at the opening, and the glass door is slidably mounted on the glass cover. The present invention can not only effectively improve the effect of rain and fog weather simulation, but also effectively improve the detection efficiency of the retroreflection coefficient of flexible materials.

Description

Technical Field

[0001] The invention relates to the field of material detection equipment, in particular to a rain and fog environment simulation device for detecting the retroreflection coefficient of flexible materials. Background Art

[0002] Flexible materials are used as test samples. The absolute measurement method specified in GB 20653 "Protective clothing occupational high-visibility warning clothing" is used to test the retroreflection coefficient. The flexible materials need to be clamped and fixed to test the intensity of the reflected light received by the weak light meter after the standard A light source is projected onto the test sample under experimental conditions such as a specific distance, a specific observation angle and an incident angle. In the test process, environmental simulation is often required to detect the reflective performance of flexible materials in a real environment. Among them, rain and fog environment simulation is the most common environmental simulation.

[0003] In the prior art, rain and fog simulation usually uses a glass cover to cover the flexible material and the entire clamping device, and sprays rain or fog from above to simulate the environment. However, the device still has the following shortcomings in actual use: 1. The model effect of rain and fog spraying is not good. In the prior art, rain and fog can only be sprayed from top to bottom, and the angle cannot be adjusted. It is impossible to simulate the rain and fog conditions in windy weather, which leads to a decrease in the environmental simulation detection effect of the flexible material. 2. The angle adjustment is cumbersome. Once the existing equipment rotates the angle of the flexible material, the detection point of the flexible material will be separated from the original position, so that the position of the detection light source facing the flexible material will change. If you want to adjust the detection point of the flexible material back so that the detection light source faces this point, the debugging process is very troublesome, thus resulting in a decrease in the efficiency of the retroreflection coefficient detection of the flexible material. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to improve the effect of environmental simulation during flexible material detection and how to improve the detection efficiency of the retroreflection coefficient of the flexible material.

[0005] The present invention provides a rain and fog environment simulation device for detecting the retroreflection coefficient of a flexible material, comprising a workbench, a horizontal rotating table rotatably arranged on the upper end of the workbench, a driving mechanism for driving the horizontal rotating table to rotate is arranged inside the workbench, an L-shaped support rod is arranged on the upper end of the horizontal rotating table, a lifting and sliding mechanism is arranged on the vertical arm of the support rod, a connecting arm is arranged on the lifting and sliding mechanism, a connecting frame is rotatably arranged on the end of the connecting arm, a rotating motor for driving the connecting frame to rotate is arranged inside the connecting arm, a sample carrying component is arranged in the middle of the connecting frame, a rain and fog simulation component is also arranged on the connecting frame, a cylindrical glass cover is arranged on the upper end of the workbench, an opening is arranged on one side of the glass cover, a glass door is arranged at the opening, and the glass door is slidably mounted on the glass cover.

[0006] Furthermore, the sample carrying assembly includes a placement box, a circular detection port is provided at the front end of the placement box, an entry port for placing the sample is provided at one side of the placement box, a clamping plate is provided in the placement box, a plurality of springs are provided between the clamping plate and the side wall of the placement box, the springs press the clamping plate toward the detection port, a rotating shaft is provided at the rear of the placement box, the axis of the rotating shaft is colinear with the axis of the detection port, the rotating shaft is rotatably connected to the connecting frame, a rotating motor is provided on the connecting frame, and the output end of the rotating motor is transmission-connected to the rotating shaft.

[0007] Furthermore, a portion of the clamping plate located outside the entrance is bent toward the rear of the placement box, and a sample placement plate is also provided in the placement box, and a clamping strip is provided at the lower end of the sample placement plate.

[0008] Furthermore, the rain and fog simulation component includes a semicircular arc frame, which is rotatably arranged on a connecting frame, and the axis of rotation of the arc frame is colinear with the axis of rotation of the connecting frame when the arc frame rotates. The connecting arm is provided with a driving component for driving the arc frame to rotate, and the middle part of the arc frame is a track part, and the track part is provided with a moving block that can move along its circumference, and the moving block is provided with a connecting rod, and the end of the connecting rod is provided with a rain and fog simulation nozzle, and the rain and fog simulation nozzle faces the center of the detection port.

[0009] Furthermore, the center of the circle of one end of the entrance close to the interior of the placement box is simultaneously located on the axis of rotation of the connecting frame, the axis of the rotating shaft, and the axis of rotation of the horizontal rotating table.

[0010] Furthermore, the front end of the placement box is in a circular ring shape, and an angle scale is provided at the front end of the placement box, and a scale pointer facing the placement box is provided on the connecting frame.

[0011] Furthermore, a fixing plate is provided at the upper end of the glass cover, and a connector of the water inlet pipe of the rain and mist simulation nozzle is fixed on the fixing plate.

[0012] Furthermore, a water outlet is provided at the upper end of the workbench, and the water outlet is used to discharge the water in the glass cover.

[0013] The beneficial effects of the present invention are:

[0014] 1. When the flexible material of the present invention is used to measure the retroreflection coefficient in simulated rain and fog weather, the rain and fog simulation component can be adjusted in angle to change the direction of rain and fog (especially rain water) to the flexible material, thereby improving the simulation effect of the rain and fog environment. In addition, during the detection process, the angle of the rain and fog simulation nozzle toward the flexible material can not only be adjusted, but also can always be directed toward the center of the detection port. This arrangement can avoid adjusting the direction of the rain and fog simulation nozzle after adjusting the angle of the rain and fog simulation nozzle toward the flexible material, thereby improving the detection efficiency.

[0015] 2. When testing the retroreflection coefficient of a flexible material, the present invention rotates the flexible material and completes the test of the reflective performance of the flexible material by adjusting different incident angles and observation angles. After the angle is rotated, there is no need to adjust the position of the flexible material, which can effectively improve the detection efficiency of the retroreflection coefficient of the flexible material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The three-dimensional structure of the device of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The three-dimensional structure of the device of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the glass door of the present invention when it is opened;

[0020] Figure 4 It is a partial three-dimensional structural schematic diagram of the device of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the support rod, the sample carrying assembly and the rain and fog simulation assembly in the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the sample holding assembly in the present invention;

[0023] Figure 7 It is a cross-sectional view of the sample holding assembly in the present invention.

[0024] Figure numerals: 1. workbench; 2. horizontal rotating table; 3. driving mechanism; 4. supporting rod; 5. lifting and sliding mechanism; 6. connecting arm; 7. connecting frame; 8. sample carrying assembly; 81. placement box; 82. detection port; 83. entry port; 84. clamping plate; 85. spring; 86. rotating motor; 9. rain and fog simulation assembly; 91. arc frame; 92. driving assembly; 93. track part; 94. moving block; 95. connecting rod; 96. rain and fog simulation nozzle; 10. glass cover; 11. glass door; 12. sample placement plate; 13. clamping strip; 14. angle scale; 15. scale pointer; 16. fixing plate; 17. connector; 18. water outlet. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In this embodiment, if Figures 1 to 7 As shown, a rain and fog environment simulation device for detecting the retroreflection coefficient of flexible materials includes a workbench 1, a horizontal rotating table 2 is rotatably arranged on the upper end of the workbench 1, a driving mechanism 3 for driving the horizontal rotating table 2 to rotate is arranged inside the workbench 1, and the driving mechanism 3 is a prior art, and is mainly a motor inside, which can drive the horizontal rotating table 2 to rotate under electric drive.

[0027] An L-shaped support rod 4 is provided at the upper end of the horizontal rotating table 2, and a lifting and sliding mechanism 5 is provided on the vertical arm of the support rod 4. The lifting and sliding mechanism 5 belongs to the existing technology, and can be realized by existing equipment such as electric cylinders, screw slides, etc. The specific structure of the lifting and sliding mechanism 5 will not be described in detail here.

[0028] A connecting arm 6 is provided on the lifting and sliding mechanism 5, and a connecting frame 7 is rotatably provided at the end of the connecting arm 6. A rotating motor 86 for driving the connecting frame 7 to rotate is provided in the connecting arm 6. A sample carrying assembly 8 is provided in the middle of the connecting frame 7, and the sample carrying assembly 8 is used to place flexible materials.

[0029] The connecting frame 7 is also provided with a rain and fog simulation component 9, which can perform rain spraying simulation and water fog spraying simulation to detect the retroreflection coefficient of the flexible material in rainy or foggy environments.

[0030] A cylindrical glass cover 10 is provided at the upper end of the workbench 1. An opening is provided on one side of the glass cover 10. A glass door 11 is provided at the opening. The glass door 11 is slidably mounted on the glass cover 10. The glass cover 10 is used to prevent the water mist from diffusing out during the rain and fog simulation and affecting the environment of the laboratory. The glass cover 10 is set to be cylindrical only to facilitate the rotation and opening of the glass cover 10. In actual use, the glass cover 10 can also be set to other shapes, such as a prism. Among them, the sliding of the glass door 11 can be set to be electric or manual. During the rain and fog simulation, the entire glass cover 10 needs to be closed to prevent the water mist from dispersing. After the rain and fog simulation runs stably, the glass door 11 is directly opened manually or electrically for testing.

[0031] In specific operation, the flexible material is fixed on the sample holding component 8, the glass door 11 is closed, and then the rain and fog simulation component 9 sprays rain or water fog to simulate the rain or fog environment. During the simulation process, the rain and fog simulation component 9 can also adjust the angle to change the direction of rain and fog (especially rain) to the flexible material, thereby improving the simulation effect of the rain and fog environment. When the set experimental conditions are met, the glass door 11 can be opened to start the retroreflection coefficient detection.

[0032] Specifically, the sample carrying assembly 8 includes a placement box 81, a circular detection port 82 is provided at the front end of the placement box 81, an entry port 83 for placing the sample is provided on one side of the placement box 81, a pressing plate 84 is provided inside the placement box 81, a plurality of springs 85 are provided between the pressing plate 84 and the side wall of the placement box 81, and the springs 85 press the pressing plate 84 toward the detection port 82, a rotating shaft is provided at the rear of the placement box 81, the axis of the rotating shaft is colinear with the axis of the detection port 82, the rotating shaft is rotatably connected to the connecting frame 7, a rotating motor 86 is provided on the connecting frame 7, and the output end of the rotating motor 86 is transmission-connected to the rotating shaft. During operation, the flexible material is placed into the placement box 81 from the entry port 83 and laid flat on the front end of the pressing plate 84. Afterwards, the pressing plate 84 presses the flexible material against the inner wall of the placement box 81 under the action of the springs 85, and the middle part of the flexible material is exposed to the outside through the detection port 82, so that the retroreflection coefficient of the flexible material can be detected. During the detection process, the rotating motor 86 can drive the placement box 81 to rotate, and its rotation direction is as follows: Figure 4 As shown by arrow b.

[0033] In order to more conveniently place the flexible material into the placement box 81, a portion of the clamping plate 84 located outside the entrance 83 is bent toward the rear of the placement box 81. A sample placement plate 12 is also provided in the placement box 81, and a clamping strip 13 is provided at the lower end of the sample placement plate 12. During operation, the fixing plate 16 is first taken out, and then the flexible material is spread flat on the front end of the fixing plate 16. One side of the flexible material is fixed by the clamping strip 13, and the other side can be directly pressed by the experimenter. First, one end of the flexible material fixed by the clamping strip 13 is inserted into the placement box 81 from the entrance 83, and then the fixing plate 16 and the flexible material are completely inserted into the placement box 81. The bending setting of one end of the clamping plate 84 facilitates the insertion of the fixing plate 16 and the flexible material into the placement box 81.

[0034] Specifically, the rain and fog simulation component 9 includes a semicircular arc frame 91, which is rotatably arranged on the connecting frame 7, and the axis of rotation of the arc frame 91 is colinear with the axis of rotation of the connecting frame 7 when the arc frame 91 rotates. The connecting arm 6 is provided with a driving component 92 for driving the arc frame 91 to rotate, wherein the driving component 92 is a prior art, specifically as follows Figure 5 As shown, the driving assembly 92 can drive the arc frame 91 to rotate through the cooperation of the motor, the rotating wheel and the belt.

[0035] The middle part of the arc frame 91 is a track part 93, and a moving block 94 that can move along its circumferential direction is provided on the track part 93. The moving cooperation of the track part 93 and the moving block 94 is all prior art. For example, a rack is provided on the track part 93, and a motor and a gear are provided in the moving block 94. The motor drives the gear to rotate, and the engagement of the gear and the rack can drive the moving block 94 to move on the track part 93. Another example: the track part 93 is a flat track, and two moving wheels are provided in the moving block 94. The two moving wheels are respectively clamped on the upper and lower sides of the track part 93. The moving wheels are driven to rotate by the motor, so that the moving block 94 can be driven to move on the track part 93.

[0036] A connecting rod 95 is provided on the moving block 94, and a rain and fog simulation nozzle 96 is provided at the end of the connecting rod 95. The rain and fog simulation nozzle 96 is a prior art, and can switch between rain water spraying and water fog spraying modes, so as to simulate rainy days and foggy days. The rain and fog simulation nozzle 96 faces the center of the detection port 82. When the arc frame 91 rotates, since the axis of rotation of the arc frame 91 is arranged in a colinear manner with the axis of rotation of the connecting frame 7 when the arc frame 91 rotates, the rain and fog simulation nozzle 96 will always face the center of the detection port 82, thereby ensuring that, although the angle of the rain and fog simulation nozzle 96 toward the flexible material can be adjusted during the detection process, it is always toward the center of the detection port 82. This arrangement can avoid adjusting the direction of the rain and fog simulation nozzle 96 after adjusting the angle of the rain and fog simulation nozzle 96 toward the flexible material, thereby improving the detection efficiency.

[0037] In order to improve the detection efficiency of the retroreflection coefficient of the flexible material, the center of the circle of the end of the entrance 83 close to the inside of the placement box 81 is located on the axis of rotation of the connecting frame 7, the axis of the rotating shaft, and the axis of rotation of the horizontal rotating table 2. Figure 4 As shown, when the present invention is working, the central detection point of the flexible material is located at the center of the circle of one end of the entrance 83 close to the inside of the placement box 81. When the driving mechanism 3 drives the horizontal rotating table 2 to rotate, the rotation of the flexible material is as shown in FIG. Figure 4 As shown by the middle arrow a, since the center detection point of the flexible material is located on the axis of the horizontal rotating platform 2 when it rotates, the center detection point of the flexible material can remain at the original position and will not change. When the rotating motor 86 drives the connecting frame 7 to rotate, it will also drive the flexible material such as Figure 4 The flexible material is rotated as shown by the arrow c. Since the center detection point of the flexible material is located on the axis of rotation when the connecting frame 7 rotates, the center detection point of the flexible material can remain in the original position and will not change. Similarly, when the rotating motor 86 drives the placement box 81 to rotate, the rotation of the flexible material is as shown in FIG. Figure 4As shown by the middle arrow b, since the central detection point of the flexible material is located on the axis of the rotating shaft, the central detection point of the flexible material can remain at the original position and will not change. That is, when the flexible material is rotated to detect the retroreflection coefficient of the flexible material at different incident angles, after the angle is rotated, there is no need to adjust the position of the flexible material so that the detection point of the flexible material is restored to the detection position, which can effectively improve the detection efficiency of the retroreflection coefficient of the flexible material.

[0038] The front end of the placement box 81 is annular, and the front end of the placement box 81 is provided with an angle scale 14, and the connecting frame 7 is provided with a scale pointer 15 facing the placement box 81. Through the indication of the angle scale 14 and the scale pointer 15, the rotation angle of the flexible material can be understood.

[0039] The upper end of the glass cover 10 is provided with a fixing plate 16, and a connector 17 of the water inlet pipe of the rain and mist simulation nozzle 96 is fixed on the fixing plate 16. Before work, the water source is connected to the connector 17 of the water inlet pipe of the rain and mist simulation nozzle 96 through a pipeline.

[0040] In order to prevent water from accumulating in the glass cover 10 , a water outlet 18 is provided at the upper end of the workbench 1 , and the water outlet 18 is used to discharge the water in the glass cover 10 .

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rain and fog environment simulation device for detecting the retroreflection coefficient of a flexible material, comprising a workbench (1), a horizontal rotating table (2) being rotatably arranged at the upper end of the workbench (1), a driving mechanism (3) for driving the horizontal rotating table (2) to rotate being arranged inside the workbench (1), an L-shaped support rod (4) being arranged at the upper end of the horizontal rotating table (2), a lifting and sliding mechanism (5) being arranged on the vertical arm of the support rod (4), characterized in that: The lifting and sliding mechanism (5) is provided with a connecting arm (6), the end of the connecting arm (6) is rotatably provided with a connecting frame (7), a rotating motor (86) for driving the connecting frame (7) to rotate is provided in the connecting arm (6), a sample carrying assembly (8) is provided in the middle of the connecting frame (7), and a rain and fog simulation assembly (9) is also provided on the connecting frame (7), a cylindrical glass cover (10) is provided at the upper end of the workbench (1), an opening is provided on one side of the glass cover (10), a glass door (11) is provided at the opening, and the glass door (11) is slidably mounted on the glass cover (10); the rain and fog simulation assembly (9) comprises a semicircular The arc frame (91) is rotatably mounted on the connecting frame (7); the axis of rotation of the arc frame (91) is colinear with the axis of rotation of the connecting frame (7); the connecting arm (6) is provided with a driving assembly (92) for driving the arc frame (91) to rotate; the middle portion of the arc frame (91) is a track portion (93); the track portion (93) is provided with a moving block (94) that can move along its circumferential direction; the moving block (94) is provided with a connecting rod (95); the end of the connecting rod (95) is provided with a rain and fog simulation nozzle (96); the rain and fog simulation nozzle (96) faces the center of the detection port (82).

2. A rain and fog environment simulation device for detecting retroreflection coefficient of flexible materials according to claim 1, characterized in that: The sample carrying assembly (8) comprises a placement box (81), a circular detection port (82) is provided at the front end of the placement box (81), an entry port (83) for placing a sample is provided at one side of the placement box (81), a clamping plate (84) is provided inside the placement box (81), a plurality of springs (85) are provided between the clamping plate (84) and the side wall of the placement box (81), the springs (85) press the clamping plate (84) towards the detection port (82), a rotating shaft is provided at the rear of the placement box (81), the axis of the rotating shaft is colinear with the axis of the detection port (82), the rotating shaft is rotationally connected to the connecting frame (7), a rotating motor (86) is provided on the connecting frame (7), and the output end of the rotating motor (86) is transmission-connected to the rotating shaft.

3. A rain and fog environment simulation device for detecting retroreflection coefficient of flexible materials according to claim 2, characterized in that: A portion of the pressing plate (84) located outside the entrance (83) is bent toward the rear of the placement box (81). A sample placement plate (12) is also provided in the placement box (81), and a clamping strip (13) is provided at the lower end of the sample placement plate (12).

4. A rain and fog environment simulation device for detecting retroreflection coefficient of flexible materials according to claim 2, characterized in that: The center of the circle of one end of the entrance (83) close to the interior of the placement box (81) is simultaneously located on the axis of rotation of the connecting frame (7), the axis of the rotating shaft, and the axis of rotation of the horizontal rotating platform (2).

5. The rain and fog environment simulation device for detecting the retroreflection coefficient of a flexible material according to claim 2, characterized in that: The front end of the placement box (81) is in a circular ring shape, and an angle scale (14) is provided at the front end of the placement box (81). The connection frame (7) is provided with a scale pointer (15) facing the placement box (81).

6. The rain and fog environment simulation device for detecting the retroreflection coefficient of a flexible material according to claim 1, characterized in that: A fixing plate (16) is provided at the upper end of the glass cover (10), and a connector (17) of a water inlet pipe of the rain and mist simulation nozzle (96) is fixed on the fixing plate (16).

7. The rain and fog environment simulation device for detecting the retroreflection coefficient of a flexible material according to claim 1, characterized in that: A water outlet (18) is provided at the upper end of the workbench (1), and the water outlet (18) is used to discharge water in the glass cover (10).

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