A distributed natural environment light aging accelerated test device

Abstract

The present invention provides a distributed natural environment light aging accelerated test device, including: a sample is fixed on a sample mounting seat, a solar tracking reflector assembly is arranged on the side of the sample, and a control system is used to monitor and control temperature data and irradiation data, and a tracking device for controlling the solar tracking reflector assembly to always rotate with the sun's azimuth, and to control the reflector of each solar tracking reflector assembly to adjust to the solar altitude angle, with the sample as the center, a plurality of mutually independent solar tracking reflector assemblies together constitute a fan-shaped reflection area or a circular reflection area, and the reflectors of all solar tracking reflector assemblies can reflect ultraviolet light onto the sample. The present invention can not only realize the efficient enhancement of the solar radiation light effect, can effectively prevent the sample from being damaged by overstress, but also can accurately and quickly expand the acceleration ratio, and can also realize the light aging test of constant radiation intensity.

Description

Technical Field

[0001] The invention belongs to the technical field of natural environment accelerated testing, and in particular relates to a distributed natural environment light aging accelerated testing device. Background Art

[0002] The existing document CN113155715B discloses a highly accelerated aging test device for polymer materials, including an ultraviolet reflection system, a sample temperature control system, a sun tracking system (including manual mode and automatic mode, controlled by a control box, when the system is switched from manual mode to automatic mode, the system automatically finds the best focusing elevation angle and rotation angle for highly accelerated aging test, and the sensor element includes a temperature sensor, a humidity sensor and an irradiation sensor), and a multi-environmental factor coordinated control system. This solution can achieve an accelerated aging rate of 30 to 50 times by tracking the sun and focusing light. The document CN109580465A provides a natural environment accelerated test device for strengthening photothermal effect and a method of using the same, including a test box and a temperature and humidity sensor in the test box. The test box is arranged on a sun tracking device, and the sun tracking device is connected to a controller. The controller controls the sun tracking device to track the sun's altitude angle and azimuth angle, so that the top of the test box is always perpendicular to the sun's rays. This solution has the advantages of good thermal radiation effect enhancement and high test acceleration rate. However, the aforementioned accelerated aging test device cannot accurately and quickly expand the acceleration rate. More importantly, it is difficult and costly to expand the acceleration rate using existing accelerated aging test equipment, and usually the entire test equipment needs to be changed. Summary of the invention

[0003] In view of the problems existing in the background technology, the purpose of the present invention is to provide a distributed natural environment light aging acceleration test device that can accurately and quickly expand the acceleration rate.

[0004] The object of the present invention is achieved by adopting the following technical solution.

[0005] A distributed natural environment light aging acceleration test device comprises: a sample is fixed on a sample mounting seat, a solar tracking reflector assembly is arranged on the side of the sample, and a control system is used to monitor and control temperature data and irradiation data, and is used to control the tracking device of the solar tracking reflector assembly to always rotate with the sun's azimuth (the sun's azimuth angle is the target azimuth), and is used to control the reflector of each solar tracking reflector assembly to adjust to the sun's altitude angle (the sun's altitude angle is the target angle). It is characterized in that: with the sample as the center, multiple independent solar tracking reflector assemblies together constitute a fan-shaped reflection area or a circular reflection area, and the reflectors of all solar tracking reflector assemblies can reflect ultraviolet light onto the sample.

[0006] As a preferred solution, the fan-shaped reflection area or the circular reflection area is arranged with multiple rows of sun tracking reflector assemblies at intervals, and each row of sun tracking reflector assemblies is arranged in an arc shape or a circular shape.

[0007] Furthermore, a spray assembly is provided on the sample mounting seat, and the spray head of the spray assembly is located above the sample. With such a scheme, the light-wet coupling effect can be achieved, and the correlation and accuracy of the test results with the test results in the natural environment can be improved at a high acceleration rate. In order to achieve the maximum acceleration effect, the spray cycle can be set at intervals as follows:

[0008]

[0009] The sample mount is also equipped with a blackboard thermometer and an ultraviolet radiation sensor. The blackboard thermometer test range should be greater than 150°C, and the response time should be less than 5s; the ultraviolet radiation sensor, the 300nm to 400nm band measurement range should be no less than 4000W / m 2 , and the surface should be encapsulated with a filter with a transmittance of 10% in the ultraviolet 300nm-400nm band to prevent the sensor from saturating when irradiated by the multi-faceted reflector. A centrifugal cooling fan is also provided on the sample mounting seat. The outlet of the centrifugal fan is connected to the air duct, and there is an air guide plate at the outlet of the air duct so that the wind can blow on the surface of the sample to achieve air cooling. Usually, the air volume of the centrifugal fan should be no less than 35m 3 / min, the air outlet design should have enough air outlet area to ensure that the wind speed on the sample surface is no more than 15m / s. When the sample surface temperature or the blackboard temperature is higher than the set value, the centrifugal fan should be started to blow air to cool down.

[0010] In order to reduce the difficulty of installing the test equipment and reduce the difficulty of expanding the acceleration rate and the difficulty of testing, the solar tracking reflector assembly and sample mount are installed on the ground or on a concrete foundation.

[0011] In order to be able to change the acceleration rate more quickly, the reflectors of all the sun-tracking reflector assemblies can be flipped to a horizontal state and / or a vertical state, and the sun-tracking reflector assemblies can achieve tilt adjustment.

[0012] Preferably, the solar tracking reflector assembly includes a solar tracking mechanism, a rotating support is arranged on the bearing part of the solar tracking mechanism, a flip mechanism is arranged on the top of the rotating support, the flip mechanism is connected to the reflector, the reflector is controlled to be pitched and flipped by the flip mechanism, and the reflector is controlled to rotate horizontally by the rotating support; the rotating support includes a bottom plate, a transmission box is arranged on the bottom plate, a turbine worm mechanism is arranged in the transmission box, the worm of the turbine worm mechanism is connected to the motor, the turbine shaft of the turbine worm mechanism is connected to the top plate, the flip mechanism is installed on the top plate, when the motor rotates, the worm is driven to rotate, and then the turbine is driven to rotate, and then the top plate and the flip mechanism are driven to rotate synchronously; the flip mechanism includes a movable rod, the upper end of the movable rod is fixedly connected to the reflector, the lower end of the movable rod is hingedly connected to the top plate, the side wall of the movable rod is fixedly connected to the second motor, and when the second motor is running, the movable rod and the reflector are driven to be pitched and flipped synchronously. The solar tracking reflector assembly is installed on a mechanism with adjustable inclination, and the mechanism can use a lockable universal ball head or a lockable three-dimensional universal joint bracket. Preferably: the reduction ratio of the worm gear mechanism is selected to be 40 to 60 times and can be self-locking, the motor is a brushless 5V, 12V or 24v DC motor reduction motor, the speed is 2.2r / min to 5r / min, and the torque should be greater than 5N.m; the reflector should use an ultraviolet light selective reflector, and the average reflectivity in the 300-400nm band should be greater than 80%, and the reflectivity in the band above 400nm should be less than 10%.

[0013] In order to carry out accelerated light aging tests on heavy and large columnar samples, and to carry out accelerated aging tests on columnar samples stably and effectively, the samples are columnar samples, and the columnar sample mounting seat includes a cylindrical barrel seat, a discharge short tube with a valve is arranged at the bottom of the cylindrical barrel seat, a cylindrical support body is inserted in the cylindrical barrel seat, a top plate is connected to the top of the cylindrical support body, the bottom wall of the top plate is always against the top edge of the cylindrical barrel seat, a sand filling hole is arranged on the top plate, the bottom end of the cylindrical support body just abuts against the bottom wall of the cylindrical barrel seat, and a plurality of radially arranged screw holes are arranged on the side wall of the cylindrical barrel seat, each screw hole is equipped with a ball head top screw; the bottom plate of the columnar sample is fixed on the top plate of the cylindrical support body, and the chamber between the inner wall of the cylindrical barrel seat and the outer wall of the cylindrical support body is filled with steel sand.

[0014] In order to conduct accelerated aging tests on samples in motion more accurately and stably, the outer periphery of the top plate of the cylindrical support body has teeth, which cooperate with the vertical worm gear. The bottom of the worm gear is connected to the drive system. When the drive system is running, it drives the vertical worm gear to rotate, thereby driving the top plate and the columnar sample to rotate synchronously.

[0015] Preferably, the length of the columnar sample is smaller than the height of the cylindrical support.

[0016] Preferably, the inner diameter of the cylindrical cartridge seat is 1.5-2 times the outer diameter of the cylindrical support body.

[0017] Beneficial effects:

[0018] 1. The scheme of the present invention can not only realize the efficient enhancement of the solar radiation effect, but also realize the arbitrary adjustment of the accelerated aging rate by tens to hundreds of times, effectively prevent the sample from being damaged by overstress, but also accurately and quickly expand the acceleration rate, and realize the light aging test with constant radiation intensity;

[0019] 2. The present invention is suitable for carrying out high-rate natural environment accelerated light aging tests for products at all levels, from complete machines to parts and components, and materials; the present invention can adjust the irradiation intensity according to the solar radiation intensity test data at the target plate to achieve natural environment accelerated light aging tests in different seasons and at different times; it can also accurately and stably carry out accelerated aging tests on samples in motion;

[0020] 3. According to the scheme of the present invention, the sample target plate and the reflector are installed independently, which is convenient for installation, maintenance and replacement, and has strong scalability. The reflector can be quickly arranged as needed without changing the entire device;

[0021] 4. The test device has a low center of gravity and is wind-resistant to level 10 winds. It has no carbon emissions and is particularly suitable for installation in remote extreme climate areas. It is very convenient to install samples.

[0022] 5. It is convenient to accurately and quickly adjust the irradiation temperature of the sample test area, and can complete the irradiation adjustment of any test area on the sample within three seconds;

[0023] 6. It is not only suitable for accelerated light aging tests on small samples, but also for accelerated light aging tests on large samples. It can also stably and effectively perform accelerated aging tests on columnar samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the distributed natural environment light aging accelerated test device in Example 1;

[0025] Figure 2 Schematic diagram of the sun tracking reflector assembly of the distributed natural environment light aging accelerated test device in Example 1;

[0026] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the rotating support;

[0027] Figure 4 This is a schematic diagram of the sample installation structure of the distributed natural environment light aging accelerated test device in Example 1;

[0028] Figure 5 Schematic diagram of the distributed natural environment light aging accelerated test device in Example 2;

[0029] Figure 6 It is a schematic diagram of the sample installation structure of the distributed natural environment light aging accelerated test device in Example 3. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described this time are only used to explain the present invention, and are not used to limit the present invention.

[0031] Example 1

[0032] like Figure 1 As shown, a distributed natural environment light aging accelerated test device includes: a sample 2 is fixed on a sample mounting seat 1, a solar tracking reflector assembly is arranged on the side of the sample 2, and a control system is used to monitor and control temperature data and irradiation data, and is used to control the tracking device of the solar tracking reflector assembly to always follow the sun (the principle and control technology of the sub-process are prior art, and specifically refer to the common solar tracking system), and is used to control the tracking device of the solar tracking reflector assembly to always follow the sun's azimuth rotation, and is used to control the reflector of each solar tracking reflector assembly to adjust to the solar altitude angle, and also includes a solar power supply system, and the photovoltaic panel of the solar power supply system is installed between the sample and the solar tracking reflector assembly. With the sample 2 as the center, a plurality of independent solar tracking reflector assemblies together form a fan-shaped reflection area, and the reflectors of all solar tracking reflector assemblies can reflect ultraviolet light onto the sample 2. Among them, multiple rows of solar tracking reflector assemblies are arranged at intervals in the fan-shaped reflection area, and each row of solar tracking reflector assemblies is arranged in an arc shape; a spray assembly is arranged on the sample mounting seat 1, and the nozzle of the spray assembly is located above the sample 2; the solar tracking reflector assembly and the sample mounting seat 1 are installed on the ground or on a concrete foundation, and the reflectors of all solar tracking reflector assemblies can be flipped to a horizontal state and a vertical state.

[0033] In this embodiment, Figure 2 and Figure 3As shown, the solar tracking reflector assembly includes a solar tracking mechanism 3, a rotating support is arranged on the bearing part 4 of the solar tracking mechanism 3, a flip mechanism is arranged on the top of the rotating support, the flip mechanism is connected to the reflector 5, the reflector 5 is controlled to be flipped in pitch by the flip mechanism, and the reflector 5 is controlled to be rotated horizontally by the rotating support; the rotating support includes a bottom plate 6, a transmission box 7 is arranged on the bottom plate 6, a turbine worm mechanism is arranged in the transmission box 7, a worm 8 of the turbine worm mechanism is connected to a motor 9, a turbine shaft 10 of the turbine worm mechanism is connected to a top plate 11, and a top plate 11 is provided with a transmission box 7. The flip mechanism is installed. When the motor 9 rotates, the worm 8 is driven to rotate, and then the turbine 22 is driven to rotate, and then the top plate 11 and the flip mechanism are driven to rotate synchronously. The flip mechanism includes a movable rod 12. The upper end of the movable rod 12 is fixedly connected to the reflector 5. The lower end of the movable rod 12 is hingedly connected to the top plate 11. The side wall of the movable rod 12 is fixedly connected to the second motor 13. When the second motor 13 is running, it drives the movable rod 12 and the reflector 5 to pitch and flip synchronously. The reflector 5 is also connected to the top plate 11 through a telescopic rod 21. When the reflector 5 pitches and flips, the telescopic rod 21 is adaptively extended. In actual application, the sun tracking mechanism 3 of the sun tracking reflector assembly is installed on a mechanism with adjustable inclination angle. The mechanism can use a lockable universal ball head or a commercially available lockable three-dimensional universal joint bracket. When in use, after adjusting the sun tracking reflector assembly to align with the sun, adjust the inclination of the reflector 5 by adjusting the adjustable inclination mechanism so that the sunlight can just be reflected to the target plate, and then lock and fix the adjustable inclination mechanism, so that when the reflector rotates with the sun, the reflected light spot is always on the target plate.

[0034] In this embodiment, Figure 4 As shown, sample 2 is a columnar sample, and the sample mounting seat 1 includes a cylindrical cartridge seat 14, a discharge short tube with a valve is provided at the bottom of the cylindrical cartridge seat 14, a cylindrical support body 15 is inserted in the cylindrical cartridge seat 14, a top plate 16 is connected to the top of the cylindrical support body 15, the bottom wall of the top plate 16 is always against the top edge of the cylindrical cartridge seat 14, a sand filling hole 24 is provided on the top plate 16, the bottom end of the cylindrical support body 15 is just against the bottom wall of the cylindrical cartridge seat 14, a plurality of radially arranged screw holes are provided on the side wall of the cylindrical cartridge seat 14, and a ball head top screw 23 is fitted in each screw hole; the bottom plate 25 of the columnar sample is fixed on the top plate 16 of the cylindrical support body 15, and the chamber between the inner wall of the cylindrical cartridge seat 14 and the outer wall of the cylindrical support body 15 is filled with steel sand 17. The length of the columnar sample is smaller than the height of the cylindrical support body 15 , and the inner diameter of the cylindrical cartridge seat 14 is 1.5 times the outer diameter of the cylindrical support body 15 .

[0035] Method 1: Conduct accelerated light aging test on large metal columnar sample coatings. The steps are as follows:

[0036] Step 11, installing a columnar sample, wherein the outer wall of the columnar sample is divided into a first test area, a second test area, ... an Nth test area from bottom to top;

[0037] Step 110, select a cylindrical cartridge seat 14 and a cylindrical support body 15 (the cross-sectional area of ​​the cylindrical support body 15 is larger than the cross-sectional area of ​​the columnar sample) as required, first install the cylindrical cartridge seat 14 on the foundation, and then insert the cylindrical support body 15 into the cylindrical cartridge seat 14, at which time the bottom wall of the top plate 16 of the cylindrical support body 15 just abuts against the top edge of the cylindrical cartridge seat 14, and the bottom end of the cylindrical support body 15 just abuts against the bottom wall of the cylindrical cartridge seat 14;

[0038] Step 111, installing and adjusting the top screw 23 of the side wall of the cylindrical cylinder seat 14, so that the cylindrical support body 15 is in a vertical state;

[0039] Step 112, pouring steel sand 17 into the cylindrical cartridge seat 14 from the through hole on the top plate 16 until the steel sand 17 fills the cavity of the cylindrical cartridge seat 14;

[0040] Step 113, fixing the bottom plate 25 of the columnar sample on the top plate 16 of the cylindrical support 15;

[0041] Step 12, controlling the reflectors 5 of the first row of solar tracking reflector assemblies to rotate to the target angle and target azimuth, so that the reflected light of all the solar tracking reflector assemblies in the first row is irradiated to the first tested area of ​​the columnar sample; controlling the reflectors 5 of the second row of solar tracking reflector assemblies to rotate to the target angle and target azimuth, so that the reflected light of all the reflectors 5 in the second row is irradiated to the second tested area of ​​the columnar sample..., controlling the reflectors 5 of the Nth row of solar tracking reflector assemblies to rotate to the target angle and target azimuth, so that the reflected light of all the reflectors 5 in the Nth row is irradiated to the Nth (N=3, 4...) tested area of ​​the columnar sample;

[0042] Step 13, control the sun tracking reflector assembly to rotate according to the sun altitude angle and azimuth angle, and ensure that the sun tracking mechanism 3 of the sun tracking reflector assembly always rotates with the sun; when it is monitored that the temperature of a certain test area on the columnar sample exceeds the preset temperature upper limit, control one or more reflectors 5 corresponding to the test area to flip to a horizontal state or a vertical state; when it is monitored that the temperature of the test area on the columnar sample is lower than the preset temperature lower limit, control one or more reflectors 5 in the test area to flip to an effective reflection state; repeatedly perform this step to ensure that the temperature of all test areas on the columnar sample is always within the preset temperature range;

[0043] Step 14, after the test is completed, the columnar sample is taken out, and then the valve on the discharge short pipe is opened to discharge the steel sand 17.

[0044] Method 2: Conduct accelerated light aging test on large block sample coatings. The steps are as follows:

[0045] Step 1, installing a block sample on a sample support 1;

[0046] Step 2, controlling the reflectors 5 of all the sun tracking reflector assemblies to rotate to a target angle and a target orientation, so that the reflected light of each reflector 5 irradiates the test area of ​​the block sample;

[0047] Step 3, controlling all sun tracking reflector assemblies to rotate according to the sun altitude angle and azimuth angle respectively, to ensure that the sun tracking mechanism 3 always rotates with the sun;

[0048] Step 4: when it is detected that the temperature of the test area on the block sample exceeds a preset temperature upper limit, one or more reflectors 5 are controlled to immediately flip to a horizontal state or a vertical state.

[0049] Method 3: Conduct accelerated light aging test on small block sample coatings. The steps are as follows:

[0050] Step 21, installing a block sample on the sample support 1;

[0051] Step 22, controlling the reflectors 5 of X (X≤10) solar tracking reflector assemblies to rotate to a target angle and a target orientation, so that the reflected light of the X reflectors 5 irradiates the test area of ​​the block sample;

[0052] Step 23, controlling the X solar tracking reflector assemblies to rotate according to the solar altitude angle and azimuth angle respectively, to ensure that the solar tracking mechanism 3 always rotates with the sun;

[0053] Step 24. When it is monitored that the temperature rise of the test area on the block sample is too slow, the reflector 5 of the X+1th, X+2th or X+3th solar tracking reflector assembly is controlled in accordance with steps 22-23 to irradiate the reflected light to the test area of ​​the block sample until the temperature rise of the test area meets the requirements.

[0054] In this embodiment, the solar tracking reflector assembly is installed independently and distributedly from the sample. The reflectors are arranged in a fan shape, and the sample is installed due south of the center of the fan of the reflector (south of the sun in the northern hemisphere). The reflector rotates along with the solar tracking mechanism 3 to track the sun, so that the reflected light of the mirror is always reflected in the sample test area, and multi-path reflected light focusing is used to achieve the enhancement of solar radiation.

[0055] When in use, if the acceleration ratio needs to be expanded step by step, it is only necessary to adjust the standard number of solar tracking reflector assemblies first, so that the reflectors of the standard number of solar tracking reflector assemblies are in an effective reflection state, and then increase the appropriate number of solar tracking reflector assemblies each time to make the reflectors in an effective reflection state until the acceleration ratio requirement is met. Similarly, if the acceleration ratio needs to be reduced step by step, the standard number of solar tracking reflector assemblies can be adjusted first, so that the reflectors of the standard number of solar tracking reflector assemblies are in an effective reflection state, and then reduce the appropriate number of solar tracking reflector assemblies each time to make the reflectors in an ineffective reflection state (the corresponding reflectors can be flipped to a horizontal state and a vertical state) until the acceleration ratio requirement is met. In short, when the acceleration ratio is not enough, expand the appropriate number of solar tracking reflector assemblies and irradiate their reflected light to the test area of ​​the block sample. When the acceleration ratio is too large, the corresponding number of reflectors can be flipped to a horizontal state and a vertical state.

[0056] Example 2

[0057] A distributed natural environment light aging accelerated test device, referring to Example 1, the main difference between it and Example 1 is: Figure 5 As shown, with sample 2 as the center, multiple independent solar tracking reflector assemblies together form a circular reflection area, and multiple rows of solar tracking reflector assemblies are arranged at intervals in the circular reflection area, and each row of solar tracking reflector assemblies is arranged in a circular layout. When in use, each additional solar tracking reflector assembly or row of solar tracking reflector assemblies can expand the corresponding acceleration ratio.

[0058] Example 3

[0059] A distributed natural environment light aging accelerated test device, referring to Example 1, the main difference between it and Example 1 is: Figure 6 As shown, the outer periphery of the top plate 16 of the cylindrical support body 15 has a tooth portion 18, and the tooth portion 18 cooperates with the vertical worm 19. The bottom of the vertical worm 19 is connected to the driving system 26. When the driving system 26 is running, it drives the vertical worm 19 to rotate, and then drives the top plate 16 and the columnar sample to rotate synchronously. The scheme in this embodiment is mainly to accurately and stably carry out accelerated aging tests on samples in the motion process.

[0060] By adopting the scheme of the present invention, not only can the efficient enhancement of the solar radiation light effect be achieved, but also the arbitrarily adjustment of the accelerated aging rate by tens to hundreds of times can be achieved, and the overstress damage of the sample can be effectively prevented, and the acceleration ratio can be accurately and quickly expanded, and the light aging test with constant radiation intensity can be achieved; the present invention is suitable for carrying out high-ratio natural environment accelerated light aging tests for products at all levels from complete machines to parts and components and materials; the present invention can adjust the irradiation intensity according to the solar radiation intensity test data at the target plate, and realize the natural environment accelerated light aging test in different seasons and different time periods; it can also accurately and stably carry out accelerated aging tests on samples in the process of movement; by adopting the scheme of the present invention, The sample target plate and the reflector are installed independently, which is convenient for installation, maintenance and replacement, and has strong scalability. The reflectors can be quickly arranged as needed without changing the entire device. The test device of the present invention has a low center of gravity, has the ability to resist winds of level 10, has no carbon emissions, is particularly suitable for installation in remote extreme climate zones, and is very convenient for installing samples. It is easy to accurately and quickly adjust the irradiation temperature of the sample test area, and can complete the irradiation adjustment of any test area on the sample within three seconds. It is not only suitable for carrying out accelerated light aging tests on small samples, but also can carry out accelerated light aging tests on heavy and large samples, and can also stably and effectively carry out accelerated aging tests on columnar samples.

Claims

1. A distributed natural environment light aging accelerated test device, comprising: The sample is fixed on the sample mounting seat, and a solar tracking reflector assembly and a control system are arranged on the side of the sample. The control system is used to monitor and control temperature data and irradiation data, and is used to control the tracking device of the solar tracking reflector assembly to always follow the sun and to control the reflector of each solar tracking reflector assembly to adjust to a target angle and a target orientation. The invention is characterized in that: with the sample as the center, a plurality of mutually independent solar tracking reflector assemblies together form a fan-shaped reflection area or a circular reflection area, and the reflectors of all solar tracking reflector assemblies can reflect ultraviolet light onto the sample; the sample is a column The columnar sample mounting seat comprises a cylindrical barrel seat, a short discharge tube with a valve is arranged at the bottom of the cylindrical barrel seat, a cylindrical support body is inserted in the cylindrical barrel seat, a top flat plate is connected to the top of the cylindrical support body, the bottom wall of the top flat plate is always close to the top edge of the cylindrical barrel seat, a sand filling hole is arranged on the top flat plate, the bottom end of the cylindrical support body is just close to the bottom wall of the cylindrical barrel seat, a plurality of radially arranged screw holes are arranged on the side wall of the cylindrical barrel seat, and a ball head top screw is matched in each screw hole; the bottom plate of the columnar sample is fixed on the top flat plate of the cylindrical support body, and the chamber between the inner wall of the cylindrical barrel seat and the outer wall of the cylindrical support body is filled with steel sand.

2. The distributed natural environment light aging accelerated test device according to claim 1 is characterized in that: The fan-shaped reflection area or the circular reflection area is arranged with multiple rows of sun tracking reflector assemblies at intervals, and each row of sun tracking reflector assemblies is arranged in an arc shape or a circular layout.

3. The distributed natural environment light aging accelerated test device according to claim 2 is characterized in that: A spray assembly is arranged on the sample mounting seat, and a spray head of the spray assembly is located above the sample.

4. The distributed natural environment light aging accelerated test device according to any one of claims 1 to 3, characterized in that: The sun tracking reflector assembly and sample mount are installed on the ground or concrete foundation.

5. The distributed natural environment light aging accelerated test device according to claim 4 is characterized in that: The reflectors of all sun-tracking reflector assemblies can be flipped to a horizontal state and / or a vertical state; the sun-tracking reflector assemblies can achieve tilt adjustment.

6. The distributed natural environment light aging accelerated test device according to claim 5 is characterized in that: The solar tracking reflector assembly comprises a solar tracking mechanism, a rotating support is arranged on the bearing part of the solar tracking mechanism, a flipping mechanism is arranged on the top of the rotating support, the flipping mechanism is connected to the reflector, the reflector is controlled to perform pitch flipping through the flipping mechanism, and the reflector is controlled to perform horizontal rotation through the rotating support; the rotating support comprises a bottom plate, a transmission box is arranged on the bottom plate, a turbine worm mechanism is arranged in the transmission box, the worm of the turbine worm mechanism is connected to the motor, the turbine shaft of the turbine worm mechanism is connected to the top plate, the flipping mechanism is installed on the top plate, when the motor rotates, the worm is driven to rotate, and then the turbine is driven to rotate, and then the top plate and the flipping mechanism are driven to rotate synchronously; the flipping mechanism comprises a movable rod, the upper end of the movable rod is fixedly connected to the reflector, the lower end of the movable rod is hingedly connected to the top plate, the side wall of the movable rod is fixedly connected to the second motor, when the second motor is running, the movable rod and the reflector are driven to perform pitch flipping synchronously.

7. The distributed natural environment light aging accelerated test device according to claim 6, characterized in that: The top plate of the cylindrical support body has teeth on its outer periphery, which cooperate with the vertical worm gear. The bottom of the worm gear is connected to the driving system. When the driving system is running, it drives the vertical worm gear to rotate, thereby driving the top plate and the columnar sample to rotate synchronously.

8. The distributed natural environment light aging accelerated test device according to claim 7, characterized in that: The length of the columnar sample is shorter than the height of the cylindrical support.

9. The distributed natural environment light aging accelerated test device according to claim 8, characterized in that: The inner diameter of the cylindrical barrel seat is 1.5-2 times the outer diameter of the cylindrical support body.

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