Green tea airing rack

Abstract

The utility model discloses a kind of green tea airing racks, the utility model relates to the technical field of tea processing, scheme includes: a kind of green tea airing rack, comprising: multiple guide columns;Locking column, locking column and multiple guide columns are enclosed to form airing area;Multiple airing support plates, multiple airing support plates are set in airing area from top to bottom;Multiple guide sleeves, multiple guide sleeves are installed in the outer side wall of airing support plate, multiple guide sleeves and multiple guide columns are distributed one-to-one, guide sleeve is sleeved on the outer side of corresponding guide column;Locking sleeve, locking sleeve is installed in the outer side wall of airing support plate, locking sleeve is sleeved on the outer side of locking column, locking sleeve can be locked to the position corresponding to locking column;Can effectively avoid the security risk such as body imbalance falling caused by high-altitude operation, satisfy the safety demand of green tea airing operation.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, specifically to a green tea drying rack. Background Technology

[0002] The core purpose of the sun-drying stage in green tea processing is to ensure final quality and adapt to subsequent processes. Fresh leaves retain physiological activity after picking, with respiration and enzymatic reactions continuing. If not processed promptly, key substances such as tea polyphenols and amino acids will undergo adverse transformations. Simultaneously, freshly picked leaves have a high moisture content and are brittle; directly subjecting them to fixation (or killing the green leaves) can lead to uneven heating and incomplete internal fixation, making them prone to mold during storage. Direct rolling results in excessive leaf breakage, affecting appearance and brewing performance. Sun-drying utilizes natural wind and moderate sunlight to remove excess surface moisture and impurities, resulting in more even moisture distribution within the leaves and a softer, more resilient texture, laying the foundation for subsequent processes.

[0003] According to the authorization announcement number (CN214892314U), a detachable multi-layer tea drying rack includes a main body with three limiting frames installed on it. Multiple drying structures are detachably installed between the three limiting frames from top to bottom. During the tea drying process, operators place the tea leaves to be dried inside each drying structure. The design of multiple drying structures arranged vertically in layers effectively expands the three-dimensional drying space of the rack, thereby significantly increasing the tea drying capacity per unit area.

[0004] The structure disclosed in this patent has defects in practical applications. Specifically, the design of multiple drying structures arranged in layers along the vertical direction requires operators to lay and collect tea leaves. For the drying structures at higher positions, it is impossible to complete the work by simply lifting the body. It is necessary to use ladders and other auxiliary devices to carry out high-altitude operations. When operating at heights, the stability of the operator standing on the auxiliary device is limited, and there is also a possibility of falling and getting injured due to loss of balance. These safety hazards will continue to accumulate as the frequency of high-altitude operations increases, making it difficult to meet the production requirements for safe operation. Utility Model Content

[0005] The purpose of this utility model is to provide a green tea drying rack that addresses the problem that existing multi-layer tea drying racks require high-altitude operations for laying and collecting tea leaves, making it difficult to meet the safety requirements of production. This utility model provides a solution that can effectively avoid safety hazards such as loss of balance and falls caused by working at heights, thus meeting the safety requirements of green tea drying operations.

[0006] This utility model is achieved through the following technical solution:

[0007] A green tea drying rack includes: multiple guide columns; locking columns, which together with the guide columns form a drying area; multiple drying trays, arranged from top to bottom within the drying area; multiple guide sleeves, installed on the outer walls of the drying trays, each corresponding to one of the guide columns, and fitted onto the outer side of the corresponding guide column; locking sleeves, installed on the outer walls of the drying trays, fitted onto the outer side of the locking columns, and capable of locking to the corresponding position on the locking columns; and an unlocking component, installed on the lower side of the locking columns, capable of releasing the locking sleeves and thus driving the corresponding drying trays to move downwards.

[0008] Furthermore, in this utility model, the locking column is provided with multiple locking pin holes from top to bottom, and the multiple locking pin holes are staggered along the circumference of the locking column; an assembly groove is provided at a preset position on the inner side of the locking sleeve, and a locking component is installed in the assembly groove; wherein, the preset locking component can lock and cooperate with the locking pin hole of the corresponding height, thereby positioning the drying tray at the corresponding height position of the locking column.

[0009] Furthermore, in this utility model, the locking component includes: a locking pin, which is at least partially inserted into the assembly channel; and an elastic element, which is disposed in the assembly channel, with one end of the elastic element connected to the locking pin and the other end of the elastic element connected to the inner wall of the assembly channel; wherein, under the pre-tightening force of the elastic element, the locking pin can be engaged into the corresponding locking pin hole to form a locking fit.

[0010] Furthermore, in this utility model, the unlocking component includes: a transmission spindle, which is rotatably mounted inside the locking column and coaxially arranged with the locking column; an unlocking push sleeve, which is fitted onto the outside of the transmission spindle and threadedly engaged with the transmission spindle; a driven bevel gear, which is fitted onto the outside of the transmission spindle; a driving bevel gear, which meshes with the driven bevel gear; and a drive spindle, one end of which is connected to the driving bevel gear and the other end of which extends out of the locking column; wherein the unlocking push sleeve can move up and down along the transmission spindle, and the unlocking push sleeve can drive the locking pin of the corresponding height to exit the locking pin hole.

[0011] Furthermore, in this utility model, a guide slope is provided on the lower side of the end of the locking pin facing the locking column; wherein, when the unlocking push sleeve moves upward to the position corresponding to the locking pin, the outer peripheral wall of the unlocking push sleeve can form a guiding engagement with the guide slope.

[0012] Furthermore, in this utility model, the above also includes a storage rack; the storage rack is disposed on the lower side of the drying area, and the storage rack can support multiple stacked drying racks that are not in use.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. This utility model uses a drying tray, guide column and locking column to form a height-adjustable and locking structure. The drying tray can move up and down along the guide column and is locked by the locking pin of the locking component into the locking pin hole of the locking column. This fundamentally solves the problem of high-altitude operation required by existing multi-layer tea drying racks, ensuring that operators can complete the tea spreading and collection near the ground and completely avoid the safety hazard of falling due to imbalance at height.

[0015] 2. This utility model forms a layered unlocking control structure by using an unlocking component and a locking component. The unlocking push sleeve can move up and down along the transmission main shaft and drive the corresponding locking pin to exit the locking pin hole, which solves the problem that the existing multi-layer drying racks need to be adjusted as a whole to dry the tea. This ensures that each drying tray can be unlocked and raised independently, realizes layered and orderly operation, and improves the efficiency of tea leaf spreading and harvesting. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a green tea drying rack.

[0018] Figure 2 A diagram illustrating the first-person perspective of the pillar;

[0019] Figure 3 A diagram illustrating the second perspective of locking the pillar;

[0020] Figure 4 A sectional view for locking the column;

[0021] Figure 5 A cross-sectional view showing the engagement of the locking sleeve and the locking post.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 1-Guide column, 2-Locking column, 3-Drive spindle, 4-Drying tray, 5-Guide sleeve, 6-Locking sleeve, 7-Storage bracket, 8-Locking pin hole, 9-Transmission spindle, 10-Unlocking push sleeve, 11-Driven bevel gear, 12-Driven bevel gear, 13-Assembly channel, 14-Elastic element, 15-Locking pin, 16-Guide slope, 17-Drying area. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Example

[0026] Please refer to Figures 1 to 5 This utility model provides a green tea drying rack. It includes multiple guide columns 1, locking columns 2, multiple drying trays 4, multiple guide sleeves 5, locking sleeves 6, and an unlocking assembly. The structural relationship and function of each component are as follows: The locking columns 2 and the multiple guide columns 1 enclose a drying area 17 for drying tea leaves. The multiple drying trays 4 are arranged vertically from top to bottom within the drying area 17. The multiple guide sleeves 5 are installed on the outer wall of each drying tray 4 and are distributed in a one-to-one correspondence with the multiple guide columns 1. The guide sleeves 5 are slidably engaged. The locking sleeve 6 is fitted around the outer periphery of the corresponding guide column 1 to provide directional guidance and constraint for the lifting and lowering movement of the drying tray 4; the locking sleeve 6 is also installed on the outer side wall of the drying tray 4. The locking sleeve 6 is fitted around the outer periphery of the locking column 2 in a sliding and locking manner, which can position and lock the drying tray 4 to the preset height position of the locking column 2; the unlocking component is assembled in the lower area of ​​the locking column 2 and has the function of releasing the locking state of the specified locking sleeve 6, thereby driving the corresponding drying tray 4 to move up and down in the drying area 17.

[0027] Specifically, three guide columns 1 and one locking column 2 can be used as the support frame. The three guide columns 1 and one locking column 2 enclose a rectangular drying area 17. Four drying trays 4 of the same specifications are arranged in the drying area 17. Each drying tray 4 is equipped with three guide sleeves 5 and one locking sleeve 6 on its outer periphery. The three guide sleeves 5 form a sliding guide structure with clearance fit with the three guide columns 1, ensuring that the drying tray 4 can be raised and lowered in the drying area 17 along the axis of the guide columns 1. Each drying tray 4 can be independently adjusted to its own preset drying height, and is rigidly locked by its own locking sleeve 6 and the corresponding locking structure of the locking column 2. Finally, the four drying trays 4 are evenly distributed in the vertical direction in the drying area 17 to meet the needs of simultaneous drying of multiple layers of tea.

[0028] In terms of the work process, when operators are performing tea laying or collection operations, in order to avoid the risks of high-altitude operations and improve the safety and convenience of the operation, the locking status of each drying tray 4 can be independently controlled by the unlocking component: First, the locking sleeve 6 corresponding to the bottom drying tray 4 is unlocked by the unlocking component, driving the drying tray 4 to slide down along the guide column 1 to the low working surface to complete the tea laying or collection of the drying tray 4; after the bottom drying tray 4 has been completed, the locking of the second to last drying tray 4 is released by the unlocking component, driving it to slide down to the low working surface to perform the operation, and so on, completing the operation of all drying trays 4 in this top-to-bottom order, so that the four drying trays 4 are stacked and stored at the lowest point of the drying area 17.

[0029] After all the tea leaves have been laid out, the operator first lifts the top drying tray 4 along the guide column 1 to the preset drying height, and locks it in place with the locking sleeve 6 and the locking column 2. Then, following the same procedure, all the drying trays 4 are lifted to their respective preset drying heights and locked, so that the four drying trays 4 are restored to their vertically spaced state, ensuring that each layer of tea leaves can fully contact the air and sunlight, and achieve efficient drying.

[0030] Please refer to Figure 2 and Figure 3 In some embodiments of this application, the locking post 2 has multiple locking pin holes 8 arranged from top to bottom along the axial direction, and the multiple locking pin holes 8 are arranged at intervals and staggered along the circumference of the locking post 2, and the axes of each locking pin hole 8 are not in the same vertical plane; correspondingly, the inner sidewall of the locking sleeve 6 has an assembly groove 13 at a preset position, and a matching locking component is embedded in the assembly groove 13. The locking component can form a locking fit by engaging with the corresponding height locking pin hole 8, thereby rigidly positioning the drying tray 4 to the preset height position of the locking post 2.

[0031] It should be noted that the locking components of the locking sleeves 6 of each drying rack 4 have different installation angles in the circumferential direction of the locking sleeves 6, and they are matched one-to-one with the circumferential misalignment angles of each locking pin hole 8 on the locking column 2. Based on this structural design, each locking sleeve 6 can only form an effective lock with a locking pin hole 8 at a specific height on the locking column 2, so as to realize the independent height positioning of each drying rack 4 in the axial direction of the locking column 2.

[0032] The specific locking process is as follows: When all the drying trays 4 are stacked in the lower working position of the drying area 17, if they need to be lifted and locked sequentially, the uppermost drying tray 4 is first driven to rise along the guide column 1. Simultaneously, the drying tray 4 drives its locking sleeve 6 to move axially along the locking column 2. Since the circumferential angle of the locking component of the locking sleeve 6 only matches the circumferential angle of the uppermost locking pin hole 8 on the locking column 2, and the circumferential angles of the other locking pin holes 8 on the locking column 2 are misaligned with the locking component, the locking sleeve 6 can completely avoid all locking pin holes 8 below the uppermost locking pin hole 8 during its ascent. Only when it reaches the height of the uppermost locking pin hole 8 does its locking component engage with the locking pin hole 8 under its own pre-tightening force, thus completing the locking. Similarly, during the ascent, the locking sleeves 6 of the other drying trays 4 can only form a locking engagement with their respective specific locking pin holes 8, structurally preventing interference between different locking components and non-corresponding locking pin holes 8.

[0033] When it is necessary to lower the drying tray 4, the operator can use the unlocking component to release the locking component of the corresponding drying tray 4 from the locking state of the matching locking pin hole 8. At this time, the drying tray 4 can move down along the axis of the guide column 1 and the locking column 2 until it reaches the preset low working position.

[0034] Please refer to Figure 5 In some embodiments of this application, the locking assembly includes a locking pin 15 and an elastic element 14 (reset spring); the locking pin 15 is at least partially inserted into the assembly channel 13 in a sliding fit; the elastic element 14 is built into the assembly channel 13, with one end connected to the locking pin 15 and the other end connected to the inner wall of the assembly channel 13. When the elastic element 14 is in its natural state, it can drive the working end of the locking pin 15 to extend at least partially out of the assembly channel 13, so that the working end can form a coaxial engagement with the locking pin hole 8 at the corresponding height on the locking post 2, thereby achieving relative positioning of the drying tray 4 and the locking post 2 through rigid engagement.

[0035] When it is necessary to unlock, the operator applies external force to the force-bearing end of the locking pin 15 through the unlocking component, forcing the locking pin 15 to overcome the preload of the elastic element 14 and retract along the assembly groove 13 until its working end is completely disengaged from the current locking pin hole 8, thus unlocking the engagement. At this time, the elastic element 14 is in a compressed energy storage state. After the external force of the unlocking component is removed, the elastic element 14 can use its own elastic potential energy to provide conditions for the next engagement and locking of the locking pin 15 with the corresponding locking pin hole 8.

[0036] Please refer to Figure 4In some embodiments of this application, the unlocking assembly comprises a transmission spindle 9, an unlocking push sleeve 10, a driven bevel gear 11, a driving bevel gear 12, and a drive spindle 3. The locking column 2 is designed as a hollow columnar structure. The transmission spindle 9 is rotatably mounted coaxially on the inner side of the locking column 2. The top and bottom ends of the transmission spindle 9 are rotatably connected to the inner wall of the locking column 2 via bearings. The unlocking push sleeve 10 is coaxially fitted onto the outer circumference of the transmission spindle 9. The two are threaded together, enabling the rotational motion of the transmission spindle 9 to be converted into the axial linear motion of the unlocking push sleeve 10. The driven bevel gear 11 is fitted onto the lower outer circumference of the transmission spindle 9 with an interference fit. The driving bevel gear 12 and the driven bevel gear 11 form a vertical meshing transmission mechanism. One end of the drive spindle 3 is fixedly connected to the driving bevel gear 12, and the other end extends horizontally through the side wall of the locking column 2 to the outside. The drive spindle 3 and the through hole of the locking column 2 are supported by bearings for rotational rotation.

[0037] In the actual unlocking operation, the operator applies a rotational torque to the exposed end of the drive spindle 3, which drives the drive spindle 3 to rotate synchronously with the active bevel gear 12. The active bevel gear 12 transmits the torque to the driven bevel gear 11, which in turn drives the transmission spindle 9 to rotate around its own axis. Since the transmission spindle 9 and the unlocking push sleeve 10 are threadedly fitted, the rotational motion of the transmission spindle 9 is converted into the axial upward motion of the unlocking push sleeve 10 along the axis of the transmission spindle 9.

[0038] When the unlocking push sleeve 10 rises, its outer peripheral wall first contacts the locking pin 15 of the lowest locking component, controlling the locking pin 15 to overcome the pre-tightening force of the elastic element 14 and retract into the assembly groove 13 (completely outside the locking post 2), thus unlocking the lowest locking component. As the unlocking push sleeve 10 continues to rise, it contacts the locking pin 15 in sequence and completes the unlocking action. After the locking pin 15 retracts to the outside of the locking post 2, the corresponding locking slide sleeve 6 can smoothly move down along the locking post 2, and there is no radial interference between the locking pin 15 and the unlocking push sleeve 10 during the downward movement.

[0039] When the drying tray 4 needs to be raised and locked, the operator first rotates the drive spindle 3 in the opposite direction to lower the unlocking push sleeve 10 to the lowest position of the locking column 2, completely disengaging it from the height range of all locking pin holes 8. This ensures that when each locking pin 15 is inserted into the corresponding locking pin hole 8 under the pre-tightening force of the elastic element 14, it is not interfered with by the structure of the unlocking push sleeve 10, thus ensuring the reliability and accuracy of the locking action.

[0040] The power input for the drive spindle 3 can be configured in two modes: In manual drive mode, a rocker arm can be mounted on the exposed end of the drive spindle 3, allowing the operator to control its rotation by applying torque to the rocker arm; in electric drive mode, the exposed end of the drive spindle 3 can be coaxially connected to the motor output shaft via a coupling, and the rotation of the drive spindle 3 can be controlled by the forward and reverse rotation of the motor. These two drive modes can be switched according to the work scenario, balancing the flexibility of manual operation with the convenience of electric control.

[0041] It should be noted that the transmission guide of the unlocking push sleeve 10 can adopt a variety of adaptable structures: First, a sliding guide with clearance fit between the outer peripheral wall of the unlocking push sleeve 10 and the inner wall of the locking column 2. When the unlocking push sleeve 10 and the transmission main shaft 9 are raised and lowered through threaded transmission, this sliding guide structure can restrict the circumferential rotational freedom of the unlocking push sleeve 10, ensuring that it moves linearly along the axial direction; Second, a guide main shaft parallel to the transmission main shaft 9 can be fixed inside the locking column 2. The guide main shaft is inserted into the pre-set guide through hole of the unlocking push sleeve 10 in a transition fit manner. The axial guiding constraint is formed by the cooperation between the guide main shaft and the guide through hole, which restricts the circumferential rotation of the unlocking push sleeve 10.

[0042] For example, the lower side of the end of the locking pin 15 facing the locking post 2 is provided with a guide slope 16 with an adapted tilt angle; when the unlocking push sleeve 10 moves upward to the height position corresponding to the locking pin 15, the outer peripheral wall of the unlocking push sleeve 10 can form a close-fitting guide engagement with the guide slope 16.

[0043] The specific working process is as follows: When the unlocking push sleeve 10 moves upward, its outer peripheral wall first contacts the guide slope 16 of the locking pin 15. Through the slope contact, the axial movement of the unlocking push sleeve 10 is converted into a radial force on the locking pin 15, generating a radial component force pointing into the assembly channel 13. This component force drives the locking pin 15 to overcome the preload of the elastic element 14 and retract into the assembly channel 13 until the working end of the locking pin 15 is completely disengaged from the corresponding locking pin hole 8 and is located outside the locking post 2, thereby releasing the locking engagement.

[0044] Please refer to Figure 5 It should be noted that when the locking pin 15 and the locking pin hole 8 form a locking engagement, although the guide slope 16 of the locking pin 15 extends into the interior of the locking post 2, the main force-bearing contact section between the locking pin 15 and the locking pin hole 8 is a straight surface structure perpendicular to the axial direction. In this state, the overall weight of the drying tray 4 is transmitted to the inner wall of the locking pin hole 8 through the straight surface, and the guide slope 16 has no force-bearing contact with the inner wall of the locking pin hole 8, which can avoid the radial component force caused by the slope contact and ensure the structural stability of the locked state.

[0045] When the unlocking push sleeve 10 rises, the outer peripheral wall of the unlocking push sleeve 10 first forms a surface contact with the guide slope 16 of the locking pin 15. The radial component force pointing towards the inside of the assembly channel 13 is generated by the guide slope, driving the locking pin 15 to initially retract. As the locking pin 15 partially exits the locking pin hole 8, the guide slope 16 of the locking pin 15 forms a contact with the inner side wall of the locking pin hole 8. At this time, the overall weight of the drying tray 4 is converted into an additional radial component force through this contact surface. This force works in conjunction with the driving force of the unlocking push sleeve 10 to cause the locking pin 15 to continuously retract into the assembly channel 13, thereby achieving efficient release of the locking engagement.

[0046] Please refer to Figure 1 In some embodiments of this application, when the operator is laying or collecting tea leaves, multiple drying trays 4 need to be lowered to a low operating height. At this time, the lowered drying trays 4 can be placed on the storage rack 7, and the operator uses the storage rack 7 as the working support reference surface to complete the laying or collecting of tea leaves on the corresponding drying trays 4.

[0047] In some embodiments of this application, reinforcing beams are fixedly installed between the top and bottom of multiple guide columns 1 and locking columns 2. The reinforcing beams form a closed frame structure to improve the rigidity and stability of the overall support system, provide a guiding reference for the lifting and lowering movement of the drying tray 4, and ensure the smoothness of its lifting and lowering process. At the same time, the position of the reinforcing beams is adapted to ensure that they do not contact or interfere with the drying tray 4 within the lifting and lowering stroke and working positioning range of the drying tray 4.

[0048] In some embodiments of this application, multiple drying trays 4 are made of lightweight materials, such as aluminum alloy profiles, engineering plastics (e.g., polypropylene, ABS resin), etc. At the same time, the bearing surface of the drying trays 4 is provided with an array of ventilation holes, which not only meets the air circulation conditions required for drying tea, but also significantly reduces the overall weight of the trays.

[0049] When multiple drying trays 4 are stacked at the bottom of the drying area 17, the operator needs to lift them to a preset height and lock them. At this time, the operator can stand on the ground and apply an upward pushing force by pressing the bottom of the drying tray 4 with the operating lever, driving the drying tray 4 to rise along the guide column 1. When the drying tray 4 rises to the preset height, the locking pin 15 in the corresponding locking sleeve 6 will automatically pop out under the pre-tightening force of the elastic element 14 and embed into the locking pin hole 8 at the corresponding height of the locking column 2, thereby realizing the automatic positioning and locking of the drying tray 4.

[0050] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A green tea drying rack, characterized in that, include: Multiple guide columns (1); Locking column (2), the locking column (2) and the plurality of guide columns (1) enclose a drying area (17); Multiple drying trays (4) are arranged from top to bottom within the drying area (17); Multiple guide sleeves (5) are installed on the outer side wall of the drying tray (4). The multiple guide sleeves (5) are distributed one-to-one with the multiple guide columns (1). The guide sleeves (5) are fitted on the outer side of the corresponding guide column (1). Locking sleeve (6) is installed on the outer side wall of the drying tray (4) and fitted onto the outer side of the locking post (2). The locking sleeve (6) can be locked to the position corresponding to the locking post (2). The unlocking component is installed on the lower side of the locking column (2). The unlocking component can release the lock of the preset locking sleeve (6), thereby driving the corresponding drying tray (4) to move down.

2. The green tea drying rack according to claim 1, characterized in that, The locking post (2) has multiple locking pin holes (8) from top to bottom, and the multiple locking pin holes (8) are staggered along the circumferential direction of the locking post (2); An assembly groove (13) is provided at a preset position on the inner side of the locking sleeve (6), and a locking component is installed in the assembly groove (13); The preset locking component can lock and engage with the locking pin hole (8) of the corresponding height, thereby positioning the drying tray (4) at the corresponding height position of the locking column (2).

3. The green tea drying rack according to claim 2, characterized in that, The locking component includes: A locking pin (15) is at least partially inserted into the assembly channel (13); An elastic element (14) is disposed in the assembly channel (13), one end of the elastic element (14) is connected to the locking pin (15), and the other end of the elastic element (14) is connected to the inner wall of the assembly channel (13). The locking pin (15) can be engaged in the corresponding locking pin hole (8) under the pre-tightening force of the elastic member (14) to form a locking fit.

4. The green tea drying rack according to claim 3, characterized in that, The unlocking component includes: A drive shaft (9) is rotatably mounted inside the locking column (2), and the drive shaft (9) and the locking column (2) are coaxially arranged. Unlocking push sleeve (10), the unlocking push sleeve (10) is fitted on the outside of the transmission main shaft (9), the unlocking push sleeve (10) and the transmission main shaft (9) are threaded together; Driven bevel gear (11), which is fitted onto the outside of the transmission main shaft (9); A driving bevel gear (12) meshes with the driven bevel gear (11); A drive spindle (3) is provided, one end of which is connected to the drive bevel gear (12), and the other end of which extends out of the locking column (2). The unlocking push sleeve (10) can move up and down along the transmission main shaft (9), and the unlocking push sleeve (10) can drive the locking pin (15) of the corresponding height to exit the locking pin hole (8).

5. The green tea drying rack according to claim 4, characterized in that, The locking pin (15) has a guide slope (16) on the lower side of the end facing the locking post (2); When the unlocking push sleeve (10) moves upward to the position corresponding to the locking pin (15), the outer peripheral wall of the unlocking push sleeve (10) can form a guiding engagement with the guide slope (16).

6. The green tea drying rack according to any one of claims 1 to 5, characterized in that, It also includes a storage rack (7); The storage rack (7) is located on the lower side of the drying area (17), and the storage rack (7) can support multiple stacked drying trays (4) in a non-working state.

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