A handheld pbg test strip detection device

Abstract

The application discloses a handheld PBG test strip detection device, which comprises a detection shell, a detection part and a detection seat, the detection shell comprises an upper shell and a lower shell, the detection part is arranged in the upper shell, the detection part comprises a support plate fixed to the top of the inner wall of the upper shell, a plurality of CMOS sensors are embedded and arranged in the middle of the support plate, lamp sources are fixedly arranged on the two sides of the support plate, the detection seat is slidably arranged in the lower shell, a driving part is fixedly arranged in the lower shell and used for driving the detection seat to slide out of the lower shell and slide into the lower shell, a test strip insertion hole is formed in the detection seat, a negative pressure fixing hole is formed in the bottom of the test strip insertion hole, a fan is arranged on one side of the detection seat and used for fixing the test strip through negative pressure and blowing and heat dissipation, and a cover plate is rotationally connected to one side of the lower shell and corresponds to the position of the detection seat, and finally, the application has the advantages of convenient operation, difficulty in loosening of the test strip, accuracy in detection, convenience in heat dissipation, good dustproof effect and high connection stability.

Description

Technical Field

[0001] This invention belongs to the field of PBG test strip detection technology, specifically relating to a handheld PBG test strip detection device. Background Technology

[0002] PBG is a chemical substance that is significantly elevated in urine during an acute porphyria attack, and detecting PBG concentration in urine can serve as an important basis for the auxiliary diagnosis of the disease. PBG test strips, as a rapid screening tool, can detect the concentration of PBG in urine during an acute porphyria attack, thus providing diagnostic information for clinicians. PBG test strip testing devices are used to quickly and conveniently analyze and read the reaction results on PBG test strips, playing a very important role in the testing of chemical substances such as proteins. In particular, the existing handheld PBG test strip testing devices have further improved convenience and expanded the scope of application.

[0003] However, some problems still exist in existing handheld PBG test strip testing devices. First, although the method of inserting the test strip into the detection hole is convenient, the lack of a fixing structure for the test strip can lead to incomplete or unstable contact between the test strip and the detection hole, affecting the uniformity of the reaction between the test strip and the sample, thus causing errors in the test results. This is especially true in some tests with high accuracy requirements, such as drug concentration or biomarker detection, where the instability of the test strip may cause deviations in the test results, thereby affecting the accuracy of the diagnosis. Second, the test strip lacks a heat dissipation mechanism during use, making it prone to overheating. It is also prone to dust accumulation when not in use, affecting the lifespan of the device components. At the same time, the height and tilt angle adjustment of the detection housing are inconvenient, affecting the use of the testing device in different scenarios.

[0004] Therefore, there is an urgent need for a handheld PBG test strip detection device to solve the problems of existing test strips being prone to loosening, having low stability, affecting the accuracy of test results, having poor heat dissipation and dust prevention effects, and having no adjustable detection housing height. Summary of the Invention

[0005] In view of this, the present invention proposes a handheld PBG test strip detection device, which is applied to the field of hydrological monitoring equipment technology, and solves the technical problems of existing test strips being prone to loosening, having low stability, affecting the accuracy of test results, having poor heat dissipation and dust prevention effects, and having no adjustable detection housing height.

[0006] To achieve the above-mentioned technical objectives, the specific technical solution adopted by the present invention is as follows: A handheld PBG test strip detection device includes a detection housing, a detection section, and a detection seat. The detection housing includes an upper housing and a lower housing, with the upper housing fixed to the top of the lower housing. The detection section is located inside the upper housing and includes a support plate fixed to the top of the inner wall of the upper housing. Multiple CMOS sensors are embedded in the middle of the support plate, and light sources are fixedly mounted on both sides of the support plate at an angle. The detection seat is slidably placed inside the lower housing. A drive unit is fixed inside the lower housing to drive the detection seat to pass through and slide in from inside the lower housing. A test strip insertion hole is opened inside the detection seat, and a negative pressure fixing hole is opened at the bottom of the test strip insertion hole. A fan is installed on one side of the detection seat for negative pressure fixing of the test strip and air cooling. A cover plate is rotatably connected to one side of the lower housing and the position corresponding to the detection seat to seal the outlet of the detection seat and prevent dust from accumulating inside the lower housing when not in use.

[0007] Furthermore, a display and a corresponding power switch are fixed to the top of the upper housing.

[0008] Furthermore, an upper partition plate is fixedly connected to the inside of the upper housing, and a lower partition plate corresponding to the upper partition plate is fixedly connected to the inside of the lower housing. When the upper and lower housings are combined, the upper and lower partition plates divide the detection housing into a detection chamber and a control chamber.

[0009] Furthermore, the drive unit is a linear module and is fixed inside the detection cavity. Multiple limit rods are fixed inside the detection cavity and above the linear module. A connecting plate is slidably connected to the outside of the limit rods. The connecting plate is fixed to the moving slide of the linear module. The connecting plate is fixed to the end of the detection seat. The detection seat is slidably connected to the limit rods.

[0010] Furthermore, the fan is fixed to the outside of the connecting plate, and the exhaust end of the fan is connected to the negative pressure fixing hole through the air duct.

[0011] Furthermore, a battery and a control circuit board are fixedly connected inside the lower housing and within the control cavity. A processor is installed on the top of the control circuit board. An exhaust pipe for blowing air onto the control circuit board is fixedly connected to the middle of the lower partition plate. The exhaust pipe is fixedly connected to the output end of the fan.

[0012] Furthermore, a torsion spring is installed on the outer side of the lower housing to drive the cover plate and fit against the outer side of the lower housing.

[0013] Furthermore, it also includes a fixing part, which includes a supporting base frame. One end of the supporting base frame is rotatably connected to a rotating arm two, and the end of the rotating arm two is rotatably connected to a rotating arm one. The end of the rotating arm one is rotatably connected to the lower housing. The rotatable connections between the rotating arm two and the supporting base frame, the rotatable connections between the rotating arm one and the rotating arm two, and the rotatable connections between the rotating arm one and the lower housing are all interference fits.

[0014] Furthermore, a rotating hook plate is rotatably connected to the outer side of the supporting base frame, a threaded rod is threadedly connected to the bottom of the rotating hook plate, and a pressing plate is rotatably connected to the end of the threaded rod for pressing and fixing with the bottom of the supporting base frame. The pressing plate is slidably connected to the rotating hook plate, and a storage groove for storing the rotating hook plate is opened on the side of the supporting base frame.

[0015] By adopting the above technical solution, the present invention can also bring the following beneficial effects: 1. This invention discloses a handheld PBG test strip detection device. The detection seat is laterally slidable by a linear module, which facilitates the insertion and removal of the detection seat from the lower housing. This makes it easy to insert the test strip to be tested. The operation is simple and convenient. By using a fan to draw air through the negative pressure fixing hole, the test strip is adsorbed and fixed in the test strip insertion hole, which prevents the test strip from loosening during testing and ensures the accuracy of the test results. It has the advantages of convenient operation, test strip is not easy to loosen, and test accuracy is maintained.

[0016] 2. This invention mentions a handheld PBG test strip detection device, which uses a fan to blow air to a designated location for cooling, and simultaneously uses an exhaust pipe to blow air to cool the control circuit board, effectively preventing the device from being affected by overheating and extending its lifespan. When the test seat is completely placed inside the lower housing, the cover plate, under the action of a torsion spring, seals the outlet of the test seat, preventing dust and other contaminants from entering the lower housing and protecting the internal components. It has the advantages of convenient heat dissipation and good dustproof effect.

[0017] 3. This invention mentions a handheld PBG test strip detection device. Through the cooperation of the rotating arm 2 and rotating arm 1 of the fixed part and the supporting base frame, the height and tilt angle of the detection shell can be adjusted to meet different detection scenarios and needs. The design of the rotating hook plate, threaded rod and squeezing plate can clamp and fix the supporting base frame to the table, making the device more stable during use. It has the advantages of convenient adjustment of the detection shell position, wide applicability and high stability of the connection structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a handheld PBG test strip detection device mentioned in this invention; Figure 2 This is a schematic diagram of the connection structure between the lower housing and the detection seat in this embodiment; Figure 3This is a schematic diagram of the connection structure between the upper housing and the display in this embodiment; Figure 4 This is a schematic diagram of the connection structure between the battery and the control circuit board in this embodiment; Figure 5 This is a schematic diagram of the connection structure between the rotating arm 2 and the supporting base frame in this embodiment; Figure 6 This is a schematic diagram of the connection structure between the light source and the support plate in this embodiment; Figure 7 This is a schematic diagram of the connection structure between the processor and the control circuit in this embodiment; Figure 8 Appendix to this embodiment Figure 7 Enlarged schematic diagram of the structure at point A in the diagram; In the diagram: 1. Detection housing; 2. Upper housing; 3. Lower housing; 4. Display; 5. Upper partition plate; 6. Light source; 7. Support plate; 8. CMOS sensor; 9. Battery; 10. Control circuit board; 11. Lower partition plate; 12. Linear module; 13. Limiting rod; 14. Detection seat; 15. Test paper insertion hole; 16. Negative pressure fixing hole; 17. Connecting plate; 18. Fan; 19. Exhaust pipe; 20. Rotating arm one; 21. Rotating arm two; 22. Support base frame; 23. Rotating hook plate; 24. Threaded rod; 25. Extrusion plate; 26. Storage slot; 27. Processor; 28. Cover plate. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this invention, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0025] In one embodiment of this application, such as Figures 1 to 8 As shown, a handheld PBG test strip detection device is mentioned, including a detection housing 1, a detection part, and a detection seat 14. The detection housing 1 includes an upper housing 2 and a lower housing 3. The upper housing 2 is fixed to the top of the lower housing 3 by screws. The detection part is placed inside the upper housing 2. The detection part includes a support plate 7 fixed to the top of the inner wall of the upper housing 2. Multiple CMOS sensors 8 are embedded in the middle of the support plate 7. Light sources 6 are fixedly fixed to both sides of the support plate 7 at an angle. The detection seat 14 slides laterally inside the lower housing 3. A drive part is fixed inside the lower housing 3 to drive the detection seat 14 to pass through and slide into the lower housing 3. A fan 18 is installed on one side of the detection seat 14 for negative pressure to fix the test strip and for blowing air for heat dissipation.

[0026] The top of the upper housing 2 is fixed with a display 4 and a corresponding switch button. The display 4 can display the intensity of the light signal captured by the sensor or other relevant data, as well as the final result after processing, such as whether it is qualified, concentration value or other analysis results. The power switch button is the switch to control the device.

[0027] An upper partition plate 5 is fixedly connected to the inside of the upper housing 2, and a lower partition plate 11 corresponding to the upper partition plate 5 is fixedly connected to the inside of the lower housing 3. When the upper housing 2 and the lower housing 3 are combined, the upper partition plate 5 and the lower partition plate 11 divide the detection housing 1 into a detection chamber and a control chamber. In this embodiment, when the upper housing 2 and the lower housing 3 are assembled and closed, the upper partition plate 5 and the lower partition plate 11 are joined together to form a complete plate, thereby separating the interior of the detection housing 1 and preventing dust and other contaminants from entering the detection position. The drive unit is a linear module 12 and is fixedly connected to the detection chamber. Multiple limit rods 13 are fixedly connected inside the detection chamber and above the linear module 12. A connecting plate 17 is slidably connected to the outer side of the limit rod 13. The connecting plate 17 is fixedly connected to the moving slide of the linear module 12. The connecting plate 17 is fixedly connected to the end of the detection seat 14. The detection seat 14 is slidably connected to the limit rod 13. A test strip insertion hole 15 is opened inside the detection seat 14. A negative pressure fixing hole 16 is opened at the bottom of the test strip insertion hole 15. A fan 18 is fixedly connected to the outer side of the connecting plate 17. The air extraction end of the fan 18 is connected to the negative pressure fixing hole 16 through an air duct. The linear module 12 is a lead screw linear module. The linear module includes a bracket with a guide rail, a movable slide table slidably set on the guide rail, a lead screw system that drives the movable slide table, and a micro motor that drives the lead screw to rotate. The lead screw system consists of a lead screw and a nut, wherein the nut is fixedly connected to the movable slide table. The helical motion of the lead screw and the nut can convert the rotational motion into linear motion, thereby driving the lead screw to rotate through the micro motor.

[0028] Inside the lower housing 3, within the control cavity, are a battery 9 and a control circuit board 10. A processor 27 is mounted on top of the control circuit board 10. An exhaust duct 19, which blows air onto the control circuit board 10, is fixedly connected to the middle of the lower partition plate 11. The exhaust duct 19 is fixedly connected to the output end of the fan 18. The battery 9 is a rechargeable lithium battery and is equipped with a battery management system (BMS) for monitoring battery voltage, temperature, and charging status. The control circuit board 10 is responsible for controlling all functions of the device, receiving sensor signals, and sending instructions to other components. The processor 27 is the core of the control circuit board; it executes preset algorithms, processes data from sensors, and controls other hardware (such as the fan, light source, and display) based on this data. The processor can process data from multiple CMOS sensors 8 and perform real-time analysis. The processor 27 can communicate with other hardware via the control circuit board. It is equipped with an I2C or SPI bus protocol, which has low power consumption and supports data transmission between multiple devices. While the fan 18 is drawing air, it also blows air onto the control circuit board 10 through the exhaust duct 19 to cool it down. A cover plate 28 is rotatably connected to one side of the lower housing 3 and the corresponding position of the detection seat 14 to seal the outlet of the detection seat 14. A torsion spring is installed on the outside of the lower housing 3 to drive the cover plate 28 to fit against the outside of the lower housing 3. When the detection seat 14 moves into the lower housing 3, when the detection seat 14 is completely placed inside the lower housing 3, the cover plate 28 seals the outlet of the detection seat 14 under the action of the torsion spring, thereby preventing dust and other particles from entering the lower housing 3.

[0029] It also includes a fixing part, which includes a supporting base frame 22. A second rotating arm 21 is rotatably connected to one end of the supporting base frame 22. A first rotating arm 20 is rotatably connected to the end of the second rotating arm 21. The end of the first rotating arm 20 is rotatably connected to the lower housing 3. The rotatable connections between the second rotating arm 21 and the supporting base frame 22, the first rotating arm 20 and the second rotating arm 21, and the first rotating arm 20 and the lower housing 3 are all interference fits. A rotating hook plate 23 is rotatably connected to the outside of the supporting base frame 22. A threaded rod 24 is threadedly connected to the bottom of the rotating hook plate 23. A pressing plate 25 is rotatably connected to the end of the threaded rod 24 for pressing and fixing with the bottom of the supporting base frame 22. The pressing plate 25 is slidably connected to the rotating hook plate 23. A storage groove 26 for storing the rotating hook plate 23 is provided on the side of the supporting base frame 22.

[0030] In this embodiment, the color development of PBG by the test strip is based on a continuous chemical reaction chain. PBG is an amino compound containing a pyrrole structure. After contacting urine, the test strip first contacts the reaction area after being inserted into the test strip hole 15. The PBG deaminase fixed in the reaction area catalyzes the deamination reaction, converting the PBG molecule into a highly reactive pyrrole intermediate. Secondly, the pyrrole intermediate is further oxidized by hydrogen peroxide pre-coated in the reaction area, forming a pyrrole cation or free radical active species with obvious electrophilic properties. Thirdly, the above-mentioned active species undergoes a condensation reaction with the p-aminobenzoic acid chromogenic agent pre-coated in the reaction area. During the condensation process, the amino group in the chromogenic agent molecule performs a nucleophilic attack on the active pyrrole center, forming a C-N bond. Under the subsequent electron redistribution and structural rearrangement, a stable chromophore molecule with a continuous π-conjugated structure is generated. The amount of chromophore generated is positively correlated with the PBG concentration. The higher the PBG content, the deeper the color development, thus forming a stable color effect that can be used for subsequent optical detection and concentration determination. The generated chromophores have obvious absorption characteristics in the visible light range, causing the reaction area to show a color change from light to dark purple-red under the illumination of lamp source 6, and the corresponding reflected light image is acquired by CMOS sensor 8; the test strip is moved to the detection unit position by the detection seat 14, so that the above color reaction can be fully illuminated by lamp source 6 and stably captured by CMOS image sensor 8, thereby ensuring the reliable identification and output of PBG content by the detection device of this application.

[0031] Before use, the supporting base frame 22 is placed on the table. By adjusting the angles between the rotating arm 21 and the supporting base frame 22, the rotating arm 20 and the rotating arm 21, and the rotating arm 20 and the lower housing 3, the height and tilt angle of the detection housing 1 can be adjusted. When it is necessary to clamp and fix the supporting base frame 22 to the edge of the table, the rotating hook plate 23 is unscrewed from the inside of the storage groove 26. Then, the threaded rod 24 is rotated so that the threaded rod 24 and the rotating hook plate 23 drive the pressing plate 25 upward under the action of the thread, thereby clamping the table between the pressing plate 25 and the supporting base frame 22, thus clamping and fixing the supporting base frame 22 to the table. During use, the operation is performed by the button to activate... A lead screw drives a movable slide to move on a guide rail. The movable slide, via a connecting plate 17, causes the detection seat 14 to move laterally along the limiting rod 13, thus pushing the detection seat 14 out of the lower housing 3. Then, the test strip to be tested is inserted into the detection seat 14. Once the test strip is inserted into the test strip insertion hole 15 inside the detection seat 14, the fan 18 is activated to evacuate air from the test strip insertion hole 15 through the negative pressure fixing hole 16, thus adsorbing and fixing the test strip within the negative pressure fixing hole 16 to prevent loosening during testing. The output of the fan 18 can also blow air to a designated location for cooling. Finally, the drive unit resets the detection seat 14, causing the test strip to align with the CMOS sensor 8, and converting the light signal into… The digital signal is processed by a microprocessor and analyzed using a predetermined algorithm to obtain the detection result. Specifically, an LED light source illuminates the test strip within a specific wavelength range to ensure that changes in the color reaction on the strip are effectively captured. When the PBG test strip surface changes color, the light is reflected by the color reaction on the strip. A CMOS sensor 8 can simultaneously capture multiple light points. The change in the intensity of the reflected light captured by the CMOS sensor reflects the degree of color change. As the color changes, the intensity of the reflected light also changes, allowing the calculation of the PBG concentration. The CMOS sensor can quickly acquire images and convert light intensity into a digital signal. In this method, the CMOS sensor can accurately measure color changes and analyze color intensity through algorithms, thereby quantitatively outputting PBG concentration. Simultaneously, the CMOS sensor has high resolution and fast response time, enabling it to capture color changes in real time and convert them into digital signals for subsequent analysis. The data captured by the CMOS sensor is processed by a microprocessor using image processing algorithms, analyzing color changes and comparing them with a predetermined standard color chart to determine the PBG concentration in urine. The accuracy and reliability of the data processing determine the final diagnostic result. In summary, this invention has the advantages of convenient operation, test strips that are not easily loosened, maintaining detection accuracy, convenient heat dissipation, good dustproof effect, and high connection stability.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A handheld PBG test strip detection device, characterized in that: The device includes a detection housing (1), a detection unit, and a detection seat (14). The detection housing (1) includes an upper housing (2) and a lower housing (3). The upper housing (2) is fixed to the top of the lower housing (3). The detection unit is located inside the upper housing (2). The detection unit includes a support plate (7) fixed to the top of the inner wall of the upper housing (2). Multiple CMOS sensors (8) are embedded in the middle of the support plate (7). Light sources (6) are obliquely fixed to both sides of the support plate (7). The detection seat (14) is slidably placed inside the lower housing (3). The lower housing (3) is fixed to the inside of the lower housing (3). A drive unit with a drive unit (14) that extends out and slides into the lower housing (3) has a test strip insertion hole (15) inside the test strip insertion hole (15) and a negative pressure fixing hole (16) at the bottom of the test strip insertion hole (15). A fan (18) is installed on one side of the test seat (14) for negative pressure fixing of the test strip and blowing air for heat dissipation. A cover plate (28) is rotatably connected to one side of the lower housing (3) and the corresponding position of the test seat (14) for sealing the outlet of the test seat (14) to prevent dust from accumulating inside the lower housing (3) when not in use.

2. The handheld PBG test strip detection device according to claim 1, characterized in that: The top of the upper housing (2) is fixed with a display (4) and a corresponding switch button.

3. The handheld PBG test strip detection device according to claim 2, characterized in that: The upper housing (2) is fixedly connected to an upper partition plate (5), and the lower housing (3) is fixedly connected to a lower partition plate (11) corresponding to the upper partition plate (5). When the upper housing (2) and the lower housing (3) are combined, the upper partition plate (5) and the lower partition plate (11) divide the detection housing (1) into a detection cavity and a control cavity.

4. The handheld PBG test strip detection device according to claim 3, characterized in that: The driving unit is a linear module (12) and is fixed in the detection cavity. Multiple limit rods (13) are fixed inside the detection cavity and above the linear module (12). A connecting plate (17) is slidably connected to the outside of the limit rod (13). The connecting plate (17) is fixed to the moving slide of the linear module (12). The connecting plate (17) is fixed to the end of the detection seat (14). The detection seat (14) is slidably connected to the limit rod (13).

5. The handheld PBG test strip detection device according to claim 4, characterized in that: The fan (18) is fixed to the outside of the connecting plate (17), and the exhaust end of the fan (18) is connected to the negative pressure fixing hole (16) through the air pipe.

6. The handheld PBG test strip detection device according to claim 5, characterized in that: Inside the lower housing (3) and within the control cavity, a battery (9) and a control circuit board (10) are fixedly connected. A processor (27) is mounted on the top of the control circuit board (10). An exhaust pipe (19) for blowing air onto the control circuit board (10) is fixedly connected to the middle of the lower partition plate (11). The exhaust pipe (19) is fixedly connected to the output end of the fan (18).

7. The handheld PBG test strip detection device according to claim 6, characterized in that: A drive cover plate (28) is installed on the outside of the lower housing (3) to fit the torsion spring on the outside of the lower housing (3).

8. The handheld PBG test strip detection device according to claim 7, characterized in that: It also includes a fixing part, which includes a supporting base frame (22). A rotating arm two (21) is rotatably connected to one end of the supporting base frame (22). A rotating arm one (20) is rotatably connected to the end of the rotating arm two (21). The end of the rotating arm one (20) is rotatably connected to the lower housing (3). The rotatable connection between the rotating arm two (21) and the supporting base frame (22), the rotatable connection between the rotating arm one (20) and the rotating arm two (21), and the rotatable connection between the rotating arm one (20) and the lower housing (3) are all interference fits.

9. A handheld PBG test strip detection device according to claim 8, characterized in that: A rotating hook plate (23) is rotatably connected to the outside of the supporting base frame (22). A threaded rod (24) is threadedly connected to the bottom of the rotating hook plate (23). A pressing plate (25) is rotatably connected to the end of the threaded rod (24) for pressing and fixing with the bottom of the supporting base frame (22). The pressing plate (25) is slidably connected to the rotating hook plate (23). A storage groove (26) for storing the rotating hook plate (23) is provided on the side of the supporting base frame (22).

Images