Bilateral telescopic integrated optical imaging table for crop spectrum acquisition

Abstract

The utility model belongs to the field of spectral imaging provides bilateral telescopic integrated optical imaging platform for crop spectrum collection, including main body frame, the inside of main body frame is installed with first light shield, the inside of first light shield is opened with optical imaging mouth, the inside of first light shield is opened with light source mouth, a plurality of light sources are installed on the top of first light shield, light source and light source mouth correspond to each other, the middle position of main body frame inner upper portion is fixedly installed with light shield bucket, the bottom of light shield bucket and optical imaging mouth correspond to each other, the lower portion of main body frame is installed with second light shield and sunshade, the bottom of main body frame is installed with detection object translation subassembly, the utility model discloses the mutual cooperation of each structure, so that the device component can be protected in the main body frame when not using and carrying, therefore not only can be convenient for carrying the device to use in various laboratories, also convenient for the operator to carry when going out, the plant spectrum that is growing is carried to each scene collection conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of spectral imaging, specifically a double-sided telescopic integrated optical imaging stage for crop spectral acquisition. Background Technology

[0002] Sunlight-induced chlorophyll fluorescence (SIF) is a method that measures the intensity of chlorophyll fluorescence in plants under natural sunlight conditions using remote sensing spectroscopy. It can characterize the actual photosynthetic level of plants and thus be used to assess crop growth and vegetation physiological activities. High-precision ground-based spectral measurements are crucial for data validation and the establishment of inversion models.

[0003] Traditional ground-based spectral measurements typically employ handheld spectrometers or fixed stands, but these methods suffer from limitations such as insufficient handheld stability and difficulty in adjusting fixed stands. Laboratory-grade equipment, on the other hand, is stably mounted in the laboratory using specialized equipment stands to perform optical imaging of samples on a sample tray driven by the stand. These equipment stands are often quite large and heavy to stably support the optical camera and move the sample, thus obtaining relatively good spectral imaging data. Due to their size and weight, these equipment stands are generally only installed in fixed laboratories and are difficult to transport to various fields to collect spectra from growing plants. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a dual-sided telescopic integrated optical imaging stage for crop spectral acquisition, which solves the limitations of traditional ground spectral measurements, which typically use handheld spectrometers or fixed supports, but suffer from insufficient handheld stability and difficulty in flexibly adjusting fixed supports.

[0005] A dual-sided telescopic integrated optical imaging stage for crop spectral acquisition includes a main frame. A first light-shielding plate is fixedly installed at the middle position of the inner side of the main frame. An optical imaging port and a light source port are opened at the middle position inside the first light-shielding plate. Several light sources are fixedly installed above the first light-shielding plate, and the light sources correspond to the light source ports. A light-shielding barrel is fixedly installed at the middle position of the upper part of the main frame, and the bottom of the light-shielding barrel corresponds to the optical imaging port. A camera mounting bracket is installed on one side of the top of the main frame, and a detection camera is mounted on the camera mounting bracket. The top of the light-shielding barrel is adapted to the detection camera. Second light-shielding plates are fixedly installed on two opposite sides of the lower part of the main frame, and light shields are spliced ​​on the other two opposite sides of the lower part of the main frame. A detection object translation component is fixedly installed at the middle position of the bottom of the main frame. A sample placement tray is installed on the top of the detection object translation component, and the detection object translation component can drive the sample placement tray to translate towards the two light shields.

[0006] Preferably, the object translation component includes a fixed plate, with a first mounting plate and a second mounting plate respectively on both sides of the fixed plate. A connecting plate is fixedly mounted on the top of the first mounting plate and the second mounting plate, and the sample placement tray is detachably mounted on the top of the connecting plate. The fixed plate has parallel internal threaded holes and sliding holes inside. A threaded rod is engaged in the internal threaded holes, and a sliding rod is slidably connected to the sliding holes. The two ends of the threaded rod are rotatably connected to the first mounting plate and the second mounting plate respectively, and the two ends of the sliding rod are fixedly connected to the first mounting plate and the second mounting plate respectively. A drive motor is fixedly mounted on the second mounting plate, and the output end of the drive motor is drivenly connected to the threaded rod.

[0007] Preferably, multiple sets of magnets are fixedly installed on the top of the connecting plate, and the sample placement tray is made of iron or a composite material made of non-magnetic material, iron sheet or magnets, and the sample placement tray and magnets are compatible with each other.

[0008] Preferably, a pulley is fixedly fitted on both the output end of the drive motor and one end of the outer side of the threaded rod, and a drive belt is fitted on the outer side of the pulley.

[0009] Preferably, a lifting adjustment component is provided between the main frame and the camera mounting bracket. The lifting adjustment component is installed on one side of the top of the main frame, and the camera mounting bracket is installed on the movable side of the lifting adjustment component.

[0010] Preferably, the camera mounting bracket includes a fixing block installed above the main frame. An internal threaded groove is provided at the middle position of one side of the fixing block. An adjusting threaded rod is inserted into the internal threaded groove. A sliding clamping block is slidably sleeved on the outside of the adjusting threaded rod. A dovetail groove is fixedly installed at the bottom of the detection camera, and the fixing block, the sliding clamping block, and the dovetail groove are mutually compatible.

[0011] Preferably, an electrical control box is fixedly installed on the top of one side of the main frame, a control panel is fixedly installed on one end of the front of the electrical control box, and several cooling fans are installed on the top of the first light shield.

[0012] Preferably, a light-diffusing glass is installed inside the light source port.

[0013] Preferably, the surfaces of the first light-shielding plate, the second light-shielding plate, the light-shielding barrel, and the light-shielding cover are all coated with black paint.

[0014] Preferably, a light-shielding sleeve for the detection camera is provided between the detection camera and the light-shielding barrel. The light-shielding sleeve for the detection camera is a ring-shaped or C-shaped black light-shielding sleeve.

[0015] Preferably, a hinge is provided between the main frame and the sunshade; one side of the hinge is installed on the upper edge of the sunshade, and the other side of the hinge is detachably connected to the main frame.

[0016] Preferably, protective blocks are fixedly installed at the corners on the outer side of the main frame, and the material of the protective blocks can be plastic, rubber, or foam material.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model, through the cooperation of the main frame, the object translation component and related light-shielding structure, allows the device to be stored in the main frame for protection when not in use or being transported. Therefore, it not only makes it easy for operators to transport the device to various laboratories for use, but also makes it easy for operators to carry it when going out, so as to facilitate operators to transport it to various sites to collect the spectrum of growing plants. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram of the unfolded structure of the present invention from a front sectional view.

[0021] Figure 3 This is a side sectional view of the present invention.

[0022] Figure 4 This is a top view and enlarged cross-sectional schematic diagram of the object translation component of this utility model;

[0023] Figure 5 For the present utility model Figure 1 A magnified structural diagram at point A;

[0024] Figure 6 This is a top view of the structure of the first light-shielding plate of this utility model.

[0025] In the diagram: 1. Main frame; 10. Control panel; 11. Camera light shield; 12. Camera; 13. Lifting and adjusting assembly; 14. Light shield barrel; 15. Light source; 16. First light shield; 17. Second light shield; 19. Hinge; 110. Light shield; 111. Cooling fan; 112. Optical imaging port; 113. Light source port; 114. Light-diffusing glass; 115. Electrical control box; 2. Object translation assembly; 20. 21. Magnet; 22. Fixing plate; 23. Sample placement tray; 24. Threaded rod; 25. Internal threaded hole; 26. Sliding hole; 27. Sliding rod; 28. Connecting plate; 29. ​​Drive motor; 20. Pulley; 210. Drive belt; 211. First mounting plate; 212. Second mounting plate; 30. Camera mounting bracket; 31. Fixing block; 32. Dovetail groove; 33. Adjusting threaded rod; 34. Sliding clamping block; 35. Internal threaded groove. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] like Figures 1 to 6 As shown:

[0028] Example 1: This utility model provides a double-sided telescopic integrated optical imaging stage for crop spectral acquisition, including a main frame 1. A first light-shielding plate 16 is fixedly installed at the middle position of the inner side of the main frame 1. An optical imaging port 112 is opened at the middle position inside the first light-shielding plate 16. A light source port 113 is opened inside the first light-shielding plate 16. A plurality of light sources 15 are fixedly installed above the first light-shielding plate 16, and the light sources 15 correspond to the light source ports 113. A light-shielding barrel 14 is fixedly installed at the middle position of the upper part of the main frame 1, and the bottom of the light-shielding barrel 14 is aligned with the optical imaging port 112. Correspondingly, a camera mounting bracket 3 is installed on one side of the top of the main frame 1, and a detection camera 12 is installed on the camera mounting bracket, with the top of the light-shielding barrel 14 adapted to the detection camera 12; a second light-shielding plate 17 is fixedly installed on the two opposite sides of the lower part of the main frame 1, and a light-shielding cover 110 is spliced ​​on the other two opposite sides of the lower part of the main frame 1; a detection object translation component 2 is fixedly installed at the middle position of the bottom of the main frame 1, and a sample placement tray 22 is installed on the top of the detection object translation component 2, which can drive the sample placement tray 22 to translate towards the two light-shielding covers 110.

[0029] Preferably, the light-shielding barrel 14 is positioned as close as possible to the middle of the horizontal cross-section of the main frame 1, so that the detection camera 12 above the light-shielding barrel 14 can obtain the widest possible optical image of the object translation component 2 at the bottom of the main frame 1. The light-shielding barrel 14 is a hollow structure with a cross-section of any shape, such as rectangle, ellipse, or circle, formed by rigid structural plates. To accommodate different types of detection cameras 12, the light-shielding barrel 14 can be the same size at the top and bottom, or larger at the top and smaller at the bottom, or smaller at the top and larger at the bottom, so that the detection camera 12 at the top of the light-shielding barrel 14 can perform optical imaging of the sample below the light-shielding barrel 14.

[0030] Preferably, the detection camera 12 can be a surface imaging spectral camera, a line scanning spectral camera, a single-point spectrometer, a Raman spectrometer, or other optical cameras.

[0031] Preferably, the light source 15 can be a halogen tungsten lamp, a deuterium lamp, an LED lamp, or other lamps.

[0032] Preferably, a lifting adjustment assembly 13 is provided between the main frame 1 and the camera mounting bracket 3. The lifting adjustment assembly 13 is installed on one side of the top inside the main frame 1, and the camera mounting bracket 3 is installed on the movable side of the lifting adjustment assembly 13. The lifting adjustment assembly 13 has a conventional lead screw and slide rail structure or an electric push rod in the prior art.

[0033] Preferably, the camera mounting bracket 3 includes a fixing block 30 installed above the main frame 1. An internal threaded groove 34 is provided at the middle position of one side of the fixing block 30. An adjusting threaded rod 32 is inserted into the internal threaded groove 34. A sliding clamping block 33 is slidably sleeved on the outside of the adjusting threaded rod 32. A dovetail groove 31 is fixedly installed at the bottom of the detection camera 12, and the fixing block 30, the sliding clamping block 33, and the dovetail groove 31 are mutually adapted.

[0034] Preferably, an electrical control box 115 is fixedly installed on the top of one inner side of the main frame 1, and a control panel 10 is fixedly installed on one end of the front of the electrical control box 115. Several cooling fans 111 are installed on the top of the first light-shielding plate 16. Multiple cooling fans 111 can be provided, and their main function is to dissipate heat from electronic components such as the light source 15 and the electrical control box 115. The cooling fans are conventional fans in the prior art, and different sizes of cooling fans can be selected according to actual needs. Placing the electrical control box 115 inside the main frame 1 can effectively reduce the overall size of the device, and the main frame 1 can also protect the electrical control box 115.

[0035] The electrical control equipment and corresponding control technology in the control panel 10 and electrical control box 115 are all existing technologies and are not the innovations of this utility model, so they will not be described in detail here.

[0036] Preferably, a light-diffusing glass 114 is installed inside the light source port 113. Light-diffusing glass (also called diffuser glass, homogenizer, or light-diffusing sheet) is a common optical material that can uniformly scatter light, mainly used to eliminate light spots from the light source and improve the uniformity of the light irradiating the sample. Multiple light source ports 113 and light sources 15 can be provided according to actual needs, and can be positioned at different locations on the first light-shielding plate 16 according to the required light angle of the detection camera 12, to adapt to different detection cameras 12.

[0037] Preferably, the surfaces of the first light-shielding plate 16, the second light-shielding plate 17, the light-shielding barrel 14, and the light-shielding cover 110 are all coated with black paint. The black paint can achieve good optical sealing and effectively block external ambient light.

[0038] Preferably, the first light-shielding plate 16, the second light-shielding plate 17, the light-shielding barrel 14, and the light-shielding cover 110 can be made of metal, plastic, composite materials, or other materials.

[0039] Preferably, a handle is hinged at the middle of one end of the top front of the light shield 110, which allows the operator to easily rotate the light shield 110. The light shield 110 consists of four panels: a front panel, a top panel, and two side panels. The panels are hinged together using metal hinges or flexible materials in the prior art. It can be disassembled from a three-dimensional structure and folded into a stacked structure with a very small height, just like disassembling a cardboard box. When transported on a platform, the light shield 110 can be folded up and put into a box to save space.

[0040] Preferably, since the function of the light shield 110 is to block ambient light, the folding function of the light shield 110 is not a necessary function. Therefore, if the light shield 110 does not need to have a folding function, the light shield 110 can also adopt a non-foldable technical solution, such as a technical solution in which the four panels of the front panel, top panel and two side panels are directly glued or welded together.

[0041] Preferably, a hinge 19 is provided between the main frame 1 and the light shield 110; one side of the hinge 19 is installed on the upper edge of the light shield 110, and the other side of the hinge 19 is detachably connected to the main frame 1. The hinge 19 and the main frame 1 are connected by conventional detachable methods in the prior art, such as magnetic attraction, threaded connection, snap-fit ​​connection, etc. The hinge 19 can be a hinge in the prior art.

[0042] Preferably, a detection camera light shield 11 is provided between the detection camera 12 and the light shield 14. The detection camera light shield 11 is a ring-shaped or C-shaped black light shield. One end of the black light shield is covered on the lens of the detection camera 12, and the other end is covered on the top of the light shield 14 to avoid the opening of the lens of the detection camera 12. The detection camera light shield 11 is used to block the opening and reduce the amount of ambient light entering the light shield 14.

[0043] Preferably, protective blocks are fixedly installed at the corners on the outer side of the main frame 1. The protective blocks can be made of plastic, rubber, or foam material. The protective blocks can protect the four corners of the device. The entire device is a rectangular "exoskeleton" frame structure, which is compact and sturdy. The hard frame can protect various equipment components installed inside the frame. It is suitable for packing, transportation, and moving. It protects the equipment inside the frame, such as light sources, optical fibers, cables, electrical equipment, and light-diffusing lenses, from collision damage.

[0044] As can be seen from the above, when using the detection camera 12 for optical imaging, the light source 15 is turned on. The sample in the space below the first light-shielding plate 16 in the main frame 1 is only illuminated by the light source 15 to avoid interference from ambient light. Therefore, the front and rear sides below the first light-shielding plate 16 in the main frame 1 are sealed by opaque second light-shielding plates 17, and the left and right sides are blocked by opaque light-shielding covers 110. During imaging, the detection camera 12 is placed above the fixing block 30. After placement, the adjusting threaded rod 32 is rotated to move the sliding clamping block 33. The sliding clamping block 33 and the fixing block 30 are used to clamp and fix the detection camera 12. After the detection camera 12 is fixed, the imaging lens is extended to the inside of the detection camera light shield 11 and light shield 14. The cooperation of the detection camera light shield 11, light shield 14, first light shield 16, second light shield 17 and light shield 110 can block light when the detection camera 12 is imaging. When the detection camera 12 is imaging, the lifting adjustment component 13 is used to raise and lower the detection camera 12 to adjust the image clarity. After the height is fixed, the detection camera 12 is used to perform spectral imaging. After use, the detection camera 12 can be disassembled and stored, which is convenient for users to carry the device when going out or when it needs to be moved.

[0045] Example 2: This example is basically the same as the previous example, except that the object translation component 2 includes a fixed plate 21. A first mounting plate 211 and a second mounting plate 212 are respectively provided on both sides of the fixed plate 21. A connecting plate 27 is fixedly installed on the top of the first mounting plate 211 and the second mounting plate 212. The sample placement tray 22 is detachably installed on the top of the connecting plate 27. The fixed plate 21 has parallel internal threaded holes 24 and sliding holes 25. The internal threaded holes 24 are engaged with threaded rods 23. The sliding holes 25 are slidably connected to sliding rods 26. The two ends of the threaded rods 23 are rotatably connected to the first mounting plate 211 and the second mounting plate 212 respectively. The two ends of the sliding rods 26 are fixedly connected to the first mounting plate 211 and the second mounting plate 212 respectively. A drive motor 28 is fixedly installed on the second mounting plate 212. The output end of the drive motor 28 is connected to the threaded rod 23.

[0046] Preferably, the threaded rod 23 can be directly made of ball screw, the ball screw sleeve is directly fixedly installed on the internal threaded hole 24, the sliding hole 25 can be installed with a linear bearing, and the sliding rod 26 is slidably connected with the linear bearing.

[0047] Preferably, multiple sets of magnets 20 are fixedly installed on the top of the connecting plate 27. The sample placement tray 22 is made of iron or a non-magnetic material, a composite material made of iron sheets or magnets, and the sample placement tray 22 and the magnets 20 are compatible with each other. The sample placement tray 22 can be a rectangular or other shaped tray, and the upper surface of the tray on which the sample is placed is coated with black paint.

[0048] Preferably, the black surface of the sample placement tray 22, used to place samples, can also be printed with lines or grids of any color to mark different positions where multiple samples are placed. Different areas of the sample placement tray can also be labeled with numbers or letters.

[0049] Preferably, a pulley 29 is fixedly fitted on the output end of the drive motor 28 and one end of the outer side of the threaded rod 23, and a drive belt 210 is fitted on the outer side of the pulley 29.

[0050] As can be seen from the above, in use, first rotate the light shield 110 to open the main frame 1. After opening, use the control panel 10 to turn on the drive motor 28. Then, the drive motor 28 can drive the threaded rod 23 to rotate by the cooperation of the pulley 29 and the drive belt 210. Then, the drive motor 28 can drive the connecting plate 27 to move left and right by the cooperation of the internal thread hole 24. When the connecting plate 27 moves, the sliding rod 26 and the sliding hole 25 limit the trajectory of the connecting plate 27, so that the connecting plate 27 can only move left and right. After the connecting plate 27 is moved to the outside of the main frame 1, the sample placement tray 22 is picked up and placed on the connecting plate 27. Then, the magnet 20 is used to attract and fix the sample placement tray 22. After fixing, the plant to be imaged is placed on the sample placement tray 22. Then, the drive motor 28 is reversed to move the connecting plate 27 into the inside of the main frame 1. After moving, the light shield 110 is closed to block the light. After blocking the light, the light source is turned on by the control panel 10, and the sample placement tray 22 is driven to move. Then, the detection camera 12 is used to detect and image.

[0051] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A double-sided telescopic integrated optical imaging stage for crop spectral acquisition, characterized in that: The system includes a main frame (1), a first light-shielding plate (16) fixedly installed at the middle position of the inner side of the main frame (1), an optical imaging port (112) opened at the middle position inside the first light-shielding plate (16), a light source port (113) opened inside the first light-shielding plate (16), and several light sources (15) fixedly installed above the first light-shielding plate (16), with the light sources (15) corresponding to the light source ports (113). A light-shielding barrel (14) is fixedly installed at the middle position of the upper part of the main frame (1), with the bottom of the light-shielding barrel (14) corresponding to the optical imaging port (112). One side of the top of the main frame (1) A camera mounting bracket (3) is installed, on which a detection camera (12) is mounted, and the top of the light-shielding barrel (14) is adapted to the detection camera (12); a second light-shielding plate (17) is fixedly installed on the two opposite sides of the lower part of the main frame (1), and a light shield (110) is spliced ​​on the other two opposite sides of the lower part of the main frame (1); a detection object translation component (2) is fixedly installed at the middle position of the bottom of the main frame (1), and a sample placement tray (22) is installed on the top of the detection object translation component (2), and the detection object translation component (2) can drive the sample placement tray (22) to translate in the direction of the two light shields (110).

2. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: The object translation component (2) includes a fixed plate (21), on which a first mounting plate (211) and a second mounting plate (212) are respectively provided on both sides. A connecting plate (27) is fixedly installed on the top of the first mounting plate (211) and the second mounting plate (212). The sample placement tray (22) is detachably installed on the top of the connecting plate (27). The fixed plate (21) has parallel threaded holes (24) and sliding holes (25) inside. The threaded holes (24) are engaged with threaded rods (23), and the sliding holes (25) are slidably connected to sliding rods (26). The two ends of the threaded rods (23) are rotatably connected to the first mounting plate (211) and the second mounting plate (212) respectively. The two ends of the sliding rods (26) are fixedly connected to the first mounting plate (211) and the second mounting plate (212) respectively. A drive motor (28) is fixedly installed on the second mounting plate (212). The output end of the drive motor (28) is connected to the threaded rods (23) in a transmission connection.

3. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 2, characterized in that: The top of the connecting plate (27) is fixedly installed with multiple sets of magnets (20). The sample placement tray (22) is made of iron or a composite material made of non-magnetic material, iron sheet or magnet. The sample placement tray (22) and the magnets (20) are compatible with each other.

4. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 2, characterized in that: The output end of the drive motor (28) and one end of the outer side of the threaded rod (23) are both fixedly fitted with pulleys (29), and a drive belt (210) is fitted on the outer side of the pulleys (29).

5. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: A lifting adjustment component (13) is provided between the main frame (1) and the camera fixing bracket (3). The lifting adjustment component (13) is installed on one side of the top of the main frame (1), and the camera fixing bracket (3) is installed on the movable side of the lifting adjustment component (13).

6. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: The camera mounting bracket (3) includes a fixing block (30) installed above the main frame (1). An internal thread groove (34) is provided at the middle position of one side of the fixing block (30). An adjusting threaded rod (32) is inserted into the internal thread groove (34). A sliding clamping block (33) is slidably sleeved on the outside of the adjusting threaded rod (32). A dovetail groove (31) is fixedly installed at the bottom of the detection camera (12). The fixing block (30), the sliding clamping block (33), and the dovetail groove (31) are mutually compatible.

7. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: An electrical control box (115) is fixedly installed on the top of one side of the main frame (1). A control panel (10) is fixedly installed on one end of the front of the electrical control box (115). Several cooling fans (111) are installed on the top of the first light shield (16).

8. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: The light source port (113) is equipped with a light-diffusing glass (114).

9. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: The surfaces of the first light-shielding plate (16), the second light-shielding plate (17), the light-shielding barrel (14), and the light-shielding cover (110) are all coated with black paint.

10. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: A light-shielding sleeve (11) for the detection camera (12) is provided between the detection camera (12) and the light-shielding barrel (14). The light-shielding sleeve (11) for the detection camera is a ring-shaped or C-shaped black light-shielding sleeve.

11. The dual-sided telescopic integrated optical imaging stage for crop spectral acquisition as described in claim 1, characterized in that: A hinge (19) is provided between the main frame (1) and the sunshade (110); one side of the hinge (19) is installed on the upper edge of the sunshade (110), and the other side of the hinge (19) is detachably connected to the main frame (1).

Images