Multifunctional storage monitoring device

Abstract

The utility model discloses a multifunctional storage monitoring device which comprises a box body, the top of the box body is connected with a top cover, the interior of the box body is divided into a regulation and control layer and a storage layer, a temperature control mechanism is integrated in the regulation and control layer, and the interior of the regulation and control layer is divided into an independent refrigeration area and an independent heating area. The temperature control mechanism comprises a refrigerating assembly arranged in the refrigerating area and a heating assembly arranged in the heating area, a first air channel and a second air channel are formed in the inner walls, located in the refrigerating area and the heating area, of the box body correspondingly, and the first air channel and the second air channel communicate with the atmosphere and the storage layer. The first air channel and the second air channel are each internally provided with an air blocking assembly used for controlling the on-off state of the corresponding air channel and the atmosphere or the storage layer. A sensor and a controller are arranged in the box body, and the controller is electrically connected with the sensor, the heating assembly, the refrigerating assembly and the two air blocking assemblies. The interior of the equipment is divided into the regulation and control layer and the storage layer, the independent operation space of the temperature control assembly is guaranteed, and the multiple functions of refrigeration, heating, intelligent lock control and the like are integrated.

Description

Technical Field

[0001] This utility model relates to the field of storage technology, and in particular to a multifunctional storage monitoring device. Background Technology

[0002] In the tobacco industry, many materials and products are extremely sensitive to the temperature and humidity of the storage environment, and require storage devices with dehumidification, drying or temperature and humidity monitoring functions to ensure quality.

[0003] After harvesting and curing, the moisture content of tobacco leaves must be controlled within a suitable range. If the ambient humidity is too high, mold and mildew can easily grow; if the humidity is too low, the tobacco leaves will become brittle and break. The storage box needs to be monitored in real time by a humidity sensor, and the humidity should be maintained within a stable range with the help of dehumidifiers or humidifiers. At the same time, the temperature should be controlled to prevent the tobacco leaves from deteriorating or their chemical components deteriorating (such as loss of aroma substances) due to fluctuations in temperature and humidity.

[0004] Meanwhile, during the natural or artificial fermentation stages of tobacco leaves, regular sampling and quality testing are required. Samples must be stored in sealed containers, with temperature and humidity monitored to simulate the fermentation environment and prevent external environmental fluctuations from affecting the accuracy of testing. This also applies to the preservation of other tobacco flavorings and fragrances, and tobacco paper. Furthermore, after the quality inspection department conducts physicochemical analyses of tobacco leaves and cigarettes (such as nicotine content and tar release), samples must be retained for traceability or retesting. These samples must be stored in sealed containers, with temperature and humidity monitored to prevent degradation or contamination of sample components and ensure data traceability.

[0005] In the process of tobacco breeding, seeds need to be stored in a dry and low-temperature environment to maintain the germination rate; tobacco tissue samples used for scientific research also need to be stored in special storage boxes to control temperature and humidity, so as to avoid the inactivation or deterioration of bioactive substances.

[0006] Therefore, in the tobacco industry, which involves a variety of temperature-sensitive materials, storage boxes need to be designed with sensing, regulation, and monitoring capabilities to be suitable for sample storage. Utility Model Content

[0007] To address the shortcomings of the existing technology, this utility model provides a multifunctional storage monitoring device that senses and monitors materials that require temporary storage or preservation, and regulates the appropriate storage environment.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a multifunctional storage monitoring device, comprising a box with an internal space for placing and storing objects, a top cover rotatably connected to the top of the box, the interior of the box being divided into a control layer and a storage layer from bottom to top, a temperature control mechanism integrated in the control layer, and independent cooling and heating zones separated within the control layer, the temperature control mechanism including a cooling component in the cooling zone and a heating component in the heating zone, a first air duct and a second air duct respectively opened on the inner walls of the cooling and heating zones of the box, both the first and second air ducts being connected to the atmosphere and the storage layer, and each of the first and second air ducts being provided with a wind-blocking component for controlling the connection and disconnection state between the corresponding air duct and the atmosphere or storage layer; a sensor and a controller are also provided inside the box, the controller being electrically connected to the sensor, the heating component, the cooling component and the two wind-blocking components respectively.

[0009] Furthermore, the cooling component includes a first radiator disposed in the cooling zone and a first fan mounted on one side of the first radiator, the first fan being used to transport cold air to the atmosphere or storage layer along a first air duct; the heating component includes a second radiator disposed in the heating zone and a second fan mounted on one side of the second radiator, the second fan being used to transport hot air to the atmosphere or storage layer along a second air duct; the heating component and the cooling component further include a semiconductor refrigeration chip, the cooling surface of the semiconductor refrigeration chip being attached to the substrate side of the first radiator, and the heating surface of the semiconductor refrigeration chip being attached to the substrate side of the second radiator.

[0010] Furthermore, the first air duct includes a first air inlet located on the side wall of the cooling zone and a first air outlet communicating with the atmosphere. A second air inlet communicating with the storage layer and a second air outlet located in the storage layer are provided between the first air inlet and the first air outlet in the side plate where the first air duct is located. The structure of the second air duct is the same as that of the first air duct. The windproof assembly includes a rotating shaft rotatably installed in the first air duct and the second air duct. A windproof plate for blocking the first air outlet or the second air inlet is installed on the rotating shaft. One end of the rotating shaft is connected to a first driving device. The first driving device controls the windproof plate to rotate and switch between the first air outlet and the second air inlet.

[0011] Furthermore, the inner wall of the housing located in the storage layer has a first placement slot for placing desiccant, and a baffle with holes is installed at the opening of the first placement slot.

[0012] Furthermore, the inner wall of the housing located in the storage layer has a second placement slot for placing batteries, and a sealing plate is installed at the opening of the second placement slot. The batteries are electrically connected to the controller.

[0013] Furthermore, a display panel is installed on the outer wall of the enclosure, and the display panel is electrically connected to the controller.

[0014] Furthermore, a contact sensor is installed on the front panel of the enclosure. The contact sensor is electrically connected to the display panel and generates a counting signal based on the state of being in contact with and separated from the top cover to drive the display panel to display the number of times the device is switched on and off in real time.

[0015] Furthermore, the enclosure is also equipped with an electronic lock, which includes a T-shaped latch installed below the top cover, a U-shaped locking body installed inside the front panel of the enclosure and forming a linkage locking engagement with the latch in the inserted state, and an unlocking mechanism for releasing the locked state. The unlocking mechanism includes a housing installed on the front panel of the enclosure, an electronic unlocking panel and a trapezoidal unlocking block horizontally located on one side of the U-shaped locking body. The trapezoidal unlocking block can slide and compress the U-shaped locking body to release the locked state, and compression springs are elastically connected between its two sides and the inner wall of the housing. The compression springs are used to reset the trapezoidal unlocking block after the unlocking action is completed. A slider is provided below the trapezoidal unlocking block and moves perpendicular to the trapezoidal unlocking block. A sliding rod is fixed to the side of the slider away from the trapezoidal unlocking block. A rack is provided below the sliding rod. A second driving device is installed inside the housing. The output end of the second driving device meshes with the rack through a gear to drive the movement of the slider and the sliding rod.

[0016] In summary, this utility model has the following beneficial effects:

[0017] (1) By dividing the interior of the cabinet into a control layer and a storage layer from bottom to top, and setting up an independent cooling zone, heating zone and temperature control mechanism in the control layer, along with the first air duct, the second air duct and the wind baffle, the cold and hot air can be selectively introduced into the storage layer or discharged to the atmosphere, thus avoiding ineffective energy consumption.

[0018] (2) The cooling component and the heating component are integrated with a semiconductor cooling chip. The cooling surface and the heating surface are respectively attached to the substrate side of the first heat sink and the second heat sink. With the airflow drive of the first fan and the second fan, a two-way temperature control system is formed. There is no need to configure separate heating and cooling devices. The hot and cold air on the surface of the heat sink can be selectively transported to the storage layer quickly through the fan.

[0019] (3) The first air duct and the second air duct have the same structure. The internal air duct is equipped with a rotatable wind shield through a rotating shaft. The first drive device controls the air duct to switch between the first air outlet and the second air inlet, so as to realize the air duct opening and closing control in accordance with the heating and cooling requirements. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the storage device.

[0021] Figure 2 This is a schematic diagram of the internal structure of the storage device.

[0022] Figure 3 This is a cross-sectional view of the storage device.

[0023] Figure 4 This is a schematic diagram of the temperature control mechanism.

[0024] Figure 5 This is a schematic diagram of the first or second air duct structure.

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0026] Figure 7 This is a schematic diagram of an electronic lock.

[0027] Figure 8 This is a half-sectional view of the electronic lock housing.

[0028] The reference numerals in the attached figures are explained as follows:

[0029] 1. Cabinet; 11. Control Layer; 111. Cooling Zone; 112. Heating Zone; 12. Storage Layer; 13. First Air Duct; 131. First Air Inlet; 132. First Air Outlet; 133. Second Air Inlet; 134. Second Air Outlet; 14. Second Air Duct; 15. First Placement Slot; 16. Second Placement Slot; 17. Port C; 2. Top Cover; 3. Temperature Control Mechanism; 31. First Radiator; 32. First Fan; 33. Second Radiator; 34. Second Fan; 35. Semiconductor Cooling Chip; 4. Wind Baffle Assembly; 41. Windshield; 42. First Drive Device; 5. Sensor; 6. Display Panel; 7. Contact Sensor; 8. Electronic Lock; 81. T-shaped Lock Tongue; 82. U-shaped Locking Body; 83. Housing; 84. Trapezoidal Unlocking Block; 85. Compression Spring; 86. Slider; 87. Slide Rod; 88. Second Drive Device; 9. Filter. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments.

[0031] Example 1:

[0032] like Figures 1 to 6 As shown, this embodiment provides a multifunctional storage monitoring device, including a box 1 with an internal space for storing items. The top of the box 1 is rotatably connected to a top cover 2. The inside of the box 1 is divided into an adjustment layer 11 and a storage layer 12 from bottom to top. The box 1 can be placed horizontally or vertically. When placed vertically, the storage layer 12 can contain multiple small transparent plastic storage boxes for storing items. It can also be used to store documents and other materials when placed vertically.

[0033] A temperature control mechanism 3 is integrated within the control layer 11. The control layer 11 contains separate cooling zones 111 and heating zones 112, which are sealed and isolated from each other. The temperature control mechanism 3 includes a cooling component located in the cooling zone 111 and a heating component located in the heating zone 112. The inner walls of the housing 1 in the cooling zone 111 and heating zone 112 are respectively provided with a first air duct 13 and a second air duct 14. To avoid affecting the air ducts when the device is placed vertically, it is preferable that the first air duct 13 and the second air duct 14 are located on the rear side panel of the housing 1, and that the first air duct 13 and the second air duct 14 are located away from the sensor 5. Both the first air duct 13 and the second air duct 14 are connected to the atmosphere and the storage layer 12. Each of the first air duct 13 and the second air duct 14 is equipped with a wind-blocking component 4 for controlling the connection / disconnection between the corresponding air duct and the atmosphere or the storage layer 12. The housing 1 also contains a sensor 5 and a controller, which are electrically connected to the sensor 5, the heating component, the cooling component, and the two wind-blocking components 4. The temperature control mechanism 3 and the wind-blocking components 4 are controlled based on the detection signals from the sensor 5 group. The first air duct 13 and the second air duct 14 select between connecting to the atmosphere and the storage layer 12 through their respective wind-blocking components 4. When the storage layer 12 needs cooling, the wind-blocking component 4 of the first air duct 13 controls the connection between the first air duct 13 and the storage layer 12, while blocking it from the atmosphere, thereby ensuring that the cold air from the cooling zone 111 can be smoothly delivered to the storage layer 12. At this time, the second air duct 14 blocks hot air from entering the storage layer 12 through the wind baffle assembly 4, and transports the generated hot air from the second air duct 14 to the outside air, thereby achieving the purpose of cooling the storage layer 12. When the storage layer 12 needs to be heated, the opposite operation is controlled.

[0034] The first radiator 31 and the second radiator 33 are aluminum alloy finned radiators. The cooling component includes the first radiator 31 disposed in the cooling zone 111 and the first fan 32 installed on one side of the first radiator 31. The first fan 32 is used to transport cold air to the atmosphere or the storage layer 12 along the first air duct 13. The heating component includes the second radiator 33 disposed in the heating zone 112 and the second fan 34 installed on one side of the second radiator 33. The second fan 34 is used to transport hot air to the atmosphere or the storage layer 12 along the second air duct 14. The control layer 11 is divided into an independent cooling zone 111 and a heating zone 112 by a partition connected by the front side plate, the rear side plate and the bottom plate, in conjunction with the first radiator 31 and the second radiator 33.

[0035] The heating and cooling components also include a thermoelectric cooler 35. The thermoelectric cooler 35 has advantages in miniaturization and precise temperature control scenarios, can be used in confined spaces, and can switch between "cooling" and "heating," or absorb heat at one end and release heat at the other. Based on the device size and cooling / heating requirements, at least two or three thermoelectric coolers 35 and four or six fans are arranged on both sides. Therefore, in this embodiment, the cooling surface of the thermoelectric cooler 35 is attached to the substrate side of the first heat sink 31, and the heating surface of the thermoelectric cooler 35 is attached to the substrate side of the second heat sink 33. A thermoelectric cooler 35 is mounted on the substrate side of an aluminum alloy finned heat sink. The cooling surface of the thermoelectric cooler 35 is attached to the substrate side of a first heat sink 31, while a first fan 32 is attached to the fin side of the first heat sink 31. The fan drives airflow through the fins, thereby transporting the cold air from the cooling zone 111 to the atmosphere or the storage layer 12 along the first airflow duct 13. When the cold air is selectively transported to the storage layer 12, the storage layer 12 can be heated. The heating surface of the thermoelectric cooler 35 is attached to the substrate side of a second heat sink 33, while a second fan 34 is attached to the fin side of the second heat sink 33. The fan drives airflow through the fins, thereby transporting the hot air from the heating zone 112 to the atmosphere or the storage layer 12 along the second airflow duct 14. When the hot air is selectively transported to the storage layer 12, the storage layer 12 can be cooled. In a specific implementation, a thermally conductive silicone grease layer can be applied between the substrate of the aluminum alloy finned heat sink and the heating side of the thermoelectric cooler 35 to reduce thermal resistance.

[0036] The cooling zone 111 and the heating zone 112, and the control layer 11 and the storage layer 1212 are separated by partitions, and heat insulation materials including heat insulation boards are used.

[0037] The first air duct 13 includes a first air inlet 131 opened on the side wall of the cooling zone 111 and a first air outlet 132 communicating with the atmosphere. A second air inlet 133 communicating with the storage layer 12 and a second air outlet 134 located in the storage layer 12 are opened between the first air inlet 131 and the first air outlet 132 in the side plate where the first air duct 13 is located. The structure of the second air duct 14 is the same as that of the first air duct 13, and a filter screen 9 is provided at the air outlet. The windbreak assembly 4 includes a rotating shaft rotatably installed in the first air duct 13 and the second air duct 14. The rotating shaft is located near the first air outlet 132. A wind shield 41 for shielding the first air outlet 132 or the second air inlet 133 is installed on the rotating shaft. One end of the rotating shaft passes through a partition, and a slot for installing a first drive device 42 is opened in the partition at that end. The first drive device 42 is a micro stepper motor. The output end and the rotating shaft achieve angular displacement through the cooperation of a gear set. It is configured to drive the wind shield 41 to switch between the first position where the first air outlet 132 is located and the second position where the second air inlet 133 is located, so as to realize the on / off control of the air duct and the atmospheric environment or the storage layer 12.

[0038] Example 2:

[0039] This embodiment provides a multifunctional storage monitoring device based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that, Figure 3 As shown, the enclosure 1 also includes a first placement slot 15 for placing desiccant on the inner wall of the storage layer 12. A baffle with holes is installed at the opening of the first placement slot 15. A USB-C port 17 for power connection is provided on the front panel of the enclosure 1, allowing for detachable electrical connection to a power bank and AC power socket. The USB-C port transmits power to the power bank via a USB data cable. A second placement slot 16 for placing batteries is provided on the inner wall of the storage layer 12. A sealing plate is installed at the opening of the second placement slot 16. The batteries are electrically connected to the controller and can be placed on one side of the storage layer 12 corresponding to the cooling zone 111. The controller is electrically connected to the drive devices of the sensor 5, heating component, cooling component, and wind deflector 4, as well as the cooling fan, through the battery module, forming a closed-loop temperature control system. The USB-C port is electrically connected to the power module inside the enclosure 1. The battery module serves as a temporary power supply, facilitating the movement of the device. It is first connected to the controller, and then the controller distributes power to the various actuators.

[0040] Additionally, a display panel 6 is installed on the outer side panel of the housing 1, and the display panel 6 is electrically connected to the controller. A contact sensor 7 is installed on the front side panel of the housing 1. The contact sensor 7 is electrically connected to the display panel 6 and generates a counting signal based on the state of contact with and separation from the top cover 2 to drive the display panel 6 to display the number of times the device is switched on and off in real time, as well as the temperature and humidity.

[0041] like Figure 7 and Figure 8 As shown, this embodiment also provides a structure for an electronic lock 8. The electronic lock 8 is installed on the front panel of the housing 1 and can be set with a password to prevent it from being opened by unauthorized users, thus avoiding damage to the materials inside the device. Specifically, the electronic lock 8 includes a T-shaped latch 81 installed below the top cover 2, a U-shaped locking body 82 installed inside the front panel of the housing 1 and forming a linkage locking engagement with the latch in the inserted state, and an unlocking mechanism for releasing the locked state. The heads of the T-shaped latch 81 are provided with guide surfaces facing each other, while the U-shaped locking body 82 is provided with locking hooks facing each other, and the heads of the locking hooks have guide surfaces facing each other so as to insert into the U-shaped locking body 82 and lock the head of the inserted T-shaped latch 81. The unlocking mechanism includes a housing 83 installed on the front panel of the housing 1. An electronic unlocking panel and a trapezoidal unlocking block 84 horizontally disposed on one side of the U-shaped locking body 82 are installed inside the housing 83. A guide surface is also provided on the front side of the trapezoidal unlocking block 84. The trapezoidal unlocking block 84 can slide and squeeze the U-shaped locking body 82 to release the locking state. Compression springs 85 are elastically connected between the two sides and the inner wall of the housing 83. The compression springs 85 are used to reset the trapezoidal unlocking block 84 after the unlocking action is completed. Below the trapezoidal unlocking block 84, a slider 86 is positioned perpendicular to the movement of the trapezoidal unlocking block 84. Guide surfaces are located on the front side of the slider 86 and the lower side of the trapezoidal unlocking block 84. A sliding rod 87 is fixedly connected to the side of the slider 86 away from the trapezoidal unlocking block 84. The movement direction of the slider 86 and sliding rod 87 is fixed within the housing 83. A rack is positioned below the sliding rod 87. A second driving device 88 is installed inside the housing 83. The output end of the second driving device 88 meshes with the rack via gears. After the password is correct, the electronic unlocking panel controls the rotation of the second driving device 88. Through the transmission combination of gears and racks, the slider 86 and sliding rod 87 are driven to move, inserting the trapezoidal unlocking block 84 into the U-shaped locking body 82, opening both sides to unlock the bolt. To allow opening under power failure, this electronic lock 8 can use a miniature electronic lock 8 with a mechanical unlocking mechanism and password verification function. By using the same structure as the slider 86 and slide bar 87 mentioned above, and in conjunction with an unlocking mechanism consisting of a conventional keyhole, the drive control of the trapezoidal unlocking block 84 is achieved.

[0042] In practice, as an extension, sensor 5 is a temperature sensor 5 and a humidity sensor 5, which work in conjunction with a micro-sprayer to regulate the humidity in the device's storage environment.

[0043] This invention divides the internal structure of the device into a control layer 11 and a storage layer 12, ensuring independent operating space for the temperature control components and integrating multiple functions such as cooling, heating, temperature monitoring, and intelligent lock control, which can meet the needs of item storage.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional storage monitoring device, comprising a box (1) internally formed for placing a space containing objects, a top cover (2) rotationally connected to the top of the box (1), and the inside of the box (1) is divided into a regulation layer (11) and a storage layer (12) from bottom to top, characterized in that, The control layer (11) integrates a temperature control mechanism (3). The control layer (11) is divided into an independent cooling zone (111) and a heating zone (112). The temperature control mechanism (3) includes a cooling component in the cooling zone (111) and a heating component in the heating zone (112). The inner walls of the housing (1) in the cooling zone (111) and the heating zone (112) are respectively provided with a first air duct (13) and a second air duct (14). The first air duct (13) and the second air duct (14) are both connected to the atmosphere and the storage layer (12). Each of the first air duct (13) and the second air duct (14) is provided with a wind-blocking component (4) for controlling the on / off state of the corresponding air duct with the atmosphere or the storage layer (12). The housing (1) is also provided with a sensor (5) and a controller. The controller is electrically connected to the sensor (5), the heating component, the cooling component and the two wind-blocking components (4).

2. The multi-functional storage monitoring device of claim 1, wherein, The cooling component includes a first radiator (31) disposed in the cooling zone (111) and a first fan (32) installed on one side of the first radiator (31). The first fan (32) is used to transport cold air to the atmosphere or storage layer (12) along the first air duct (13). The heating component includes a second radiator (33) disposed in the heating zone (112) and a second fan (34) installed on one side of the second radiator (33). The second fan (34) is used to transport hot air to the atmosphere or storage layer (12) along the second air duct (14). The heating component and the cooling component also include a semiconductor cooling chip (35). The cooling surface of the semiconductor cooling chip (35) is attached to the substrate side of the first radiator (31), and the heating surface of the semiconductor cooling chip (35) is attached to the substrate side of the second radiator (33).

3. The multi-functional storage monitoring device of claim 1, wherein, The first air duct (13) includes a first air inlet (131) opened on the side wall of the cooling zone (111) and a first air outlet (132) connected to the atmosphere. The side plate where the first air duct (13) is located has a second air inlet (133) connected to the storage layer (12) and a second air outlet (134) located in the storage layer (12) between the first air inlet (131) and the first air outlet (132). The structure of the second air duct (14) is the same as that of the first air duct (13). The windproof assembly (4) includes a rotating shaft rotatably installed in the first air duct (13) and the second air duct (14). A windproof plate (41) for blocking the first air outlet (132) or the second air inlet (133) is installed on the rotating shaft. One end of the rotating shaft is connected to a first driving device (42). The first driving device (42) controls the windproof plate (41) to rotate and switch between the first air outlet (132) and the second air inlet (133).

4. The multi-functional storage monitoring device of claim 1, wherein, The box (1) has a first placement slot (15) for placing desiccant on the inner wall of the storage layer (12), and a baffle with holes is installed at the opening of the first placement slot (15).

5. The multi-functional storage monitoring device of claim 1, wherein, The housing (1) has a second placement slot (16) for placing batteries on the inner wall of the storage layer (12). A sealing plate is installed at the opening of the second placement slot (16), and the battery is electrically connected to the controller.

6. The multi-functional storage monitoring device according to claim 1 or 5, wherein, A display panel (6) is installed on the outer wall of the housing (1), and the display panel (6) is electrically connected to the controller.

7. The multi-functional storage monitoring device of claim 6, wherein, A contact sensor (7) is installed on the front panel of the housing (1). The contact sensor (7) is electrically connected to the display panel (6) and generates a counting signal based on the state of being in contact with and separated from the top cover (2) to drive the display panel (6) to display the number of times the device is switched on and off in real time.

8. The multi-functional storage monitoring device of claim 1, wherein, The enclosure (1) is also equipped with an electronic lock (8). The electronic lock (8) includes a T-shaped latch (81) installed below the top cover (2), a U-shaped locking body (82) installed inside the front panel of the enclosure (1) and forming a linkage locking engagement with the latch in the inserted state, and an unlocking mechanism for releasing the locked state. The unlocking mechanism includes a housing (83) installed on the front panel of the enclosure (1). The housing (83) is equipped with an electronic unlocking panel and a trapezoidal unlocking block (84) horizontally located on one side of the U-shaped locking body (82). The trapezoidal unlocking block (84) can slide and squeeze the U-shaped locking body (82) to release the locked state, and both sides are connected to the locking panel. A compression spring (85) is elastically connected between the inner walls of the housing (83). The compression spring (85) is used to reset the trapezoidal unlocking block (84) after the unlocking action is completed. A slider (86) is provided below the trapezoidal unlocking block (84) and moves perpendicular to the trapezoidal unlocking block (84). A sliding rod (87) is fixed to the side of the slider (86) away from the trapezoidal unlocking block (84). A rack is provided below the sliding rod (87). A second driving device (88) is installed inside the housing (83). The output end of the second driving device (88) meshes with the rack through a gear to drive the movement of the slider (86) and the sliding rod (87).

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