Lifting mechanism for tobacco curing barn

Abstract

The utility model discloses a lifting mechanism for a tobacco curing barn. The lifting mechanism comprises a movable base. The tobacco placing device has the advantages that when the device needs to be used, the first placing table, the second placing table and the third placing table which are used for placing tobaccos are moved to a low position through the first lifting sliding table, the second lifting sliding table and the third lifting sliding table, and then a worker places the tobaccos on the upper end face of the uppermost first placing table; when the upper end face of the first placing table is full of tobaccos, the first placing table is moved upwards through the first lifting sliding table, then the tobaccos are placed on the upper end face of the second placing table, and when the upper end face of the second placing table is full of tobaccos, the second placing table is moved upwards through the second lifting sliding table. By means of the technical scheme, the tobacco can be placed on the upper side of the interior of the tobacco curing barn only by a worker at a low position, the stacking efficiency of the worker is improved, and meanwhile the safety of the tobacco curing barn is improved.

Description

Technical Field

[0001] This utility model relates to the field of tobacco curing barn technology, specifically a lifting mechanism for tobacco curing barns. Background Technology

[0002] A tobacco curing barn is a specialized facility used for curing tobacco leaves. Its working principle involves using heating equipment to generate heat, raising the internal temperature to a suitable level. Simultaneously, ventilation equipment regulates airflow, ensuring a sufficient oxygen supply to the tobacco leaves during curing. During curing, the moisture in the tobacco leaves gradually evaporates, while the aroma compounds gradually concentrate, ultimately forming a flue-cured tobacco product with a specific flavor and aroma.

[0003] Tobacco curing barns are an indispensable and important facility in the tobacco industry. They not only improve the quality and quantity of tobacco, but also promote the sustainable development of the tobacco industry.

[0004] However, when placing tobacco inside the tobacco curing barn, a ladder is needed to help workers place some of the tobacco on the tobacco placement platform located on the upper side of the barn. This process is cumbersome, affecting the work efficiency of the workers and posing a certain degree of danger. Therefore, it does not meet the existing needs. To address this, we have proposed a lifting mechanism for tobacco curing barns. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting mechanism for a tobacco curing barn, in order to solve the problems mentioned in the background art, such as the need to use a ladder to assist workers in placing a portion of the tobacco on the tobacco placement platform located on the upper side of the inside of the tobacco curing barn when placing tobacco inside the barn. This process is cumbersome, which affects the work efficiency of the workers and is also dangerous.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lifting mechanism for a tobacco curing barn, comprising a movable base, a movable L-shaped bracket installed on one side of the upper surface of the movable base, a lifting slide rail installed on the side of the movable L-shaped bracket facing the fixed bracket, a first lifting slide platform installed on the upper side of the rear end face of the lifting slide rail, a first placement platform fixed on the rear end face of the first lifting slide platform, a second lifting slide platform installed on the outer surface of the lifting slide rail below the first placement platform, a second placement platform fixed on the rear end face of the second lifting slide platform, and a third lifting slide platform installed on the outer surface of the lifting slide rail below the second placement platform, a third placement platform fixed on the rear end face of the third lifting slide platform.

[0007] Preferably, a fixed bracket is fixedly provided on the other side of the upper surface of the movable base, a first fixing plate is fixedly provided on the upper side of the front end face of the fixed bracket, a second fixing plate is fixed to the front end face of the fixed bracket below the first fixing plate, and a third fixing plate is fixed to the front end face of the fixed bracket below the second fixing plate.

[0008] A first limiting plate, a second limiting plate, and a third limiting plate are respectively installed on the upper end face of the first fixing plate, the second fixing plate, and the third fixing plate;

[0009] A limiting bracket is fixedly installed on both sides of the upper end face of the first, second, and third placement platforms. Multiple rollers are installed on the upper end face of the limiting brackets. The upper end face of the roller closest to the first placement platform is in contact with the lower end face of the first limiting plate, the upper end face of the roller closest to the second placement platform is in contact with the lower end face of the second limiting plate, and the upper end face of the roller closest to the third placement platform is in contact with the lower end face of the third limiting plate.

[0010] Preferably, the rear end face of the first placement platform is located in front of the second limiting plate, the rear end face of the second placement platform is located in front of the third limiting plate, and the rear end face of the third placement platform is located in front of the third fixing plate.

[0011] Preferably, a stepper motor is fixedly installed on one side inside the movable base. The output shaft of the stepper motor is connected to a threaded rod via a coupling. One side of the outer surface of the threaded rod is connected to an internal threaded sleeve via a threaded structure, and the upper end face of the internal threaded sleeve is fixed to the lower end face of the movable L-shaped bracket.

[0012] Preferably, the front end of the threaded rod is located inside the housing of the movable base, and the threaded rod located inside the housing of the movable base is connected to the movable base by a roller bearing.

[0013] Preferably, a control panel is fixedly installed on one side of the outer surface of the fixed bracket, and the stepper motor, the first lifting slide, the second lifting slide, and the third lifting slide are all electrically connected to the control panel.

[0014] Preferably, a protective cover plate is provided below the stepper motor on the lower end face of the movable base, and the movable base and the protective cover plate are fixed together by screws.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model allows the equipment to be pushed into the tobacco curing barn by a movable base when needed. Then, the first, second, and third lifting platforms for placing tobacco are moved to a lower position using the first, second, and third lifting platforms. The worker then places tobacco on the upper surface of the first platform. Once the upper surface of the first platform is full, the first platform is moved upwards using the first lifting platform. Next, tobacco is placed on the upper surface of the second platform. Once the upper surface of the second platform is full, the second platform is moved upwards using the second lifting platform. Finally, tobacco is placed on the upper surface of the third platform. With this technical solution, the worker can place tobacco on the upper side of the tobacco curing barn from a lower position, which improves both the stacking efficiency and safety.

[0017] 2. In this utility model, as the first, second, and third placement platforms rise, the rollers indirectly connected to them respectively will come into contact with the lower surfaces of the first, second, and third limiting plates, thus preventing the first, second, and third placement platforms from moving further upward. When the first, second, and third placement platforms can no longer move upward, a stepper motor drives them to move backward, so that the lower surfaces of their rear ends rest on the upper surfaces of the first, second, and third fixing plates, respectively, for support. This technical solution can prevent the first, second, and third placement platforms from bending and deforming due to unbalanced forces during long-term use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the entire utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B.

[0022] In the diagram: 1. Movable base; 2. Stepper motor; 3. Threaded rod; 4. Internal threaded sleeve; 5. Movable L-shaped bracket; 6. Lifting slide rail; 7. First lifting slide; 8. Second lifting slide; 9. Third lifting slide; 10. First placement platform; 11. Second placement platform; 12. Third placement platform; 13. Limiting bracket; 14. Roller; 15. First fixing plate; 16. Second fixing plate; 17. Third fixing plate; 18. First limiting plate; 19. Second limiting plate; 20. Third limiting plate; 21. Fixed bracket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] The stepper motor 2 (model DM542), lifting slide rail 6 (model KK60) and roller 14 (model BS) mentioned in this utility model can be obtained from the market or through private customization.

[0025] like Figure 1 As shown, one embodiment of this utility model is provided: a lifting mechanism for a tobacco curing barn, including a movable base 1, a fixed bracket 21 fixedly provided on one side of the upper surface of the movable base 1, a first fixing plate 15 fixedly provided on the upper side of the front end face of the fixed bracket 21, a second fixing plate 16 fixed to the front end face of the fixed bracket 21 below the first fixing plate 15, and a third fixing plate 17 fixed to the front end face of the fixed bracket 21 below the second fixing plate 16.

[0026] A movable L-shaped bracket 5 is slidably mounted on the upper surface of the movable base 1 at the front of the fixed bracket 21. A lifting slide rail 6 is mounted on the side of the movable L-shaped bracket 5 facing the fixed bracket 21. A first lifting slide 7 is mounted on the upper side of the rear end face of the lifting slide rail 6. A first placement platform 10 is fixed on the rear end face of the first lifting slide 7. A second lifting slide 8 is mounted on the outer surface of the lifting slide rail 6 below the first placement platform 10. A second placement platform 11 is fixed on the rear end face of the second lifting slide 8. A third lifting slide 9 is mounted on the outer surface of the lifting slide rail 6 below the second placement platform 11. A third placement platform 12 is fixed on the rear end face of the third lifting slide 9.

[0027] As a preferred technical solution in this embodiment, such as Figure 2 , Figure 3 and Figure 4As shown, a stepper motor 2 is fixedly installed on one side inside the movable base 1. The output shaft of the stepper motor 2 is connected to a threaded rod 3 via a coupling. One side of the outer surface of the threaded rod 3 is connected to an internal threaded sleeve 4 via a threaded structure, and the upper end face of the internal threaded sleeve 4 is fixed to the lower end face of the movable L-shaped bracket 5. A control panel is fixedly installed on one side of the outer surface of the fixed bracket 21, and the stepper motor 2, the first lifting slide 7, the second lifting slide 8, and the third lifting slide 9 are all electrically connected to the control panel. The stepper motor 2, the first lifting slide 7, the second lifting slide 8, and the third lifting slide 9 can be controlled through the control panel.

[0028] When the equipment is needed, it is pushed into the tobacco curing barn by moving the base 1. Then, the first lifting platform 10, the second lifting platform 11, and the third lifting platform 12 for placing tobacco are moved to a lower position by the first lifting platform 7, the second lifting platform 8, and the third lifting platform 9. Then, the worker places tobacco on the upper surface of the first platform 10. When the upper surface of the first platform 10 is full of tobacco, the first lifting platform 10 is moved upward by the first lifting platform 7. Then, tobacco is placed on the upper surface of the second platform 11. When the upper surface of the second platform 11 is full of tobacco, the second lifting platform 11 is moved upward by the second lifting platform 8. Finally, tobacco is placed on the upper surface of the third platform 12. In this embodiment, the worker only needs to place the tobacco on the upper side of the tobacco curing barn from a lower position, which improves the stacking efficiency and safety of the worker.

[0029] A first limiting plate 18, a second limiting plate 19, and a third limiting plate 20 are respectively installed on the upper end surfaces of the first fixing plate 15, the second fixing plate 16, and the third fixing plate 17.

[0030] Each of the first placement platform 10, the second placement platform 11, and the third placement platform 12 has a limiting bracket 13 fixedly installed on both sides of its upper end face. Multiple rollers 14 are installed on the upper end face of the limiting bracket 13. The upper end face of the roller 14 closest to the first placement platform 10 is in contact with the lower end face of the first limiting plate 18; the upper end face of the roller 14 closest to the second placement platform 11 is in contact with the lower end face of the second limiting plate 19; and the upper end face of the roller 14 closest to the third placement platform 12 is in contact with the lower end face of the third limiting plate 20. As the first placement platform 10, the second placement platform 11, and the third placement platform 12 rise, they respectively contact the lower end face of the first placement platform 10, the second placement platform 11, and the third placement platform 12. The roller 14 indirectly connected between the first platform 11 and the third platform 12 will be in contact with the lower end faces of the first limiting plate 18, the second limiting plate 19 and the third limiting plate 20 respectively, so that the first platform 10, the second platform 11 and the third platform 12 can no longer move upward. When the first platform 10, the second platform 11 and the third platform 12 can no longer move upward, the threaded rod 3 connected to it is driven to rotate by the stepper motor 2. Since the upper end face of the inner threaded sleeve 4 installed on the outer surface of the threaded rod 3 through the threaded structure is fixed between the lower end face of the movable L-shaped bracket 5, the inner threaded sleeve 4 cannot rotate on its own.

[0031] When the threaded rod 3 rotates, the internal threaded sleeve 4, which is threadedly connected to it but cannot rotate on its own, will move back and forth accordingly. At this time, the internal threaded sleeve 4 moves backward, and the first placement platform 10, the second placement platform 11, and the third placement platform 12, which are indirectly connected to it, will also move backward together, so that the lower end face of its rear end rests on the upper end face of the first fixing plate 15, the second fixing plate 16, and the third fixing plate 17, respectively, to support it. Through the above technical solution, the first placement platform 10, the second placement platform 11, and the third placement platform 12 can be prevented from bending and deforming as a whole due to the imbalance of force during long-term use, thereby improving the overall service life of the equipment.

[0032] The rear end face of the first placement platform 10 is located in front of the second limiting plate 19, the rear end face of the second placement platform 11 is located in front of the third limiting plate 20, and the rear end face of the third placement platform 12 is located in front of the third fixing plate 17. This structure can prevent the upwardly moving first placement platform 10, second placement platform 11, or third placement platform 12 from colliding with the first fixing plate 15, second fixing plate 16, or third fixing plate 17, thereby preventing damage to both.

[0033] The front end of the threaded rod 3 is located inside the housing of the movable base 1, and the threaded rod 3 located inside the housing of the movable base 1 is connected to the movable base 1 by a roller bearing; the roller bearing structure between the movable base 1 and the threaded rod 3 can ensure the stability of the rotating threaded rod 3.

[0034] The stepper motor 2 is provided with a protective cover plate located on the lower end face of the movable base 1, and the movable base 1 and the protective cover plate are fixed together by screws; the protective cover plate can protect the internal structure of the movable base 1, and when the internal structure of the movable base 1 fails, the protective cover plate can be removed to repair the internal structure of the movable base 1.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lifting mechanism for a tobacco curing barn, comprising a movable base (1), characterized in that: A movable L-shaped bracket (5) is installed on one side of the upper surface of the movable base (1). A lifting slide rail (6) is installed on the side of the movable L-shaped bracket (5) facing the fixed bracket (21). A first lifting slide (7) is installed on the upper side of the rear end face of the lifting slide rail (6). A first placement platform (10) is fixed on the rear end face of the first lifting slide (7). A second lifting slide (8) is installed on the outer surface of the lifting slide rail (6) below the first placement platform (10). A second placement platform (11) is fixed on the rear end face of the second lifting slide (8). A third lifting slide (9) is installed on the outer surface of the lifting slide rail (6) below the second placement platform (11). A third placement platform (12) is fixed on the rear end face of the third lifting slide (9).

2. The lifting mechanism for a tobacco curing barn according to claim 1, characterized in that: A fixed bracket (21) is fixedly provided on the other side of the upper surface of the movable base (1). A first fixing plate (15) is fixedly provided on the upper side of the front end face of the fixed bracket (21). A second fixing plate (16) is fixed to the front end face of the fixed bracket (21) below the first fixing plate (15). A third fixing plate (17) is fixed to the front end face of the fixed bracket (21) below the second fixing plate (16). A first limiting plate (18), a second limiting plate (19), and a third limiting plate (20) are respectively installed on the upper end face of the first fixing plate (15), the second fixing plate (16), and the third fixing plate (17); A limiting bracket (13) is fixedly installed on both sides of the upper end face of the first placement platform (10), the second placement platform (11), and the third placement platform (12). Multiple rollers (14) are installed on the upper end face of the limiting bracket (13). The upper end face of the roller (14) closest to the first placement platform (10) is in contact with the lower end face of the first limiting plate (18). The upper end face of the roller (14) closest to the second placement platform (11) is in contact with the lower end face of the second limiting plate (19). The upper end face of the roller (14) closest to the third placement platform (12) is in contact with the lower end face of the third limiting plate (20).

3. The lifting mechanism for a tobacco curing barn according to claim 1, characterized in that: The rear end face of the first placement platform (10) is located in front of the second limiting plate (19), the rear end face of the second placement platform (11) is located in front of the third limiting plate (20), and the rear end face of the third placement platform (12) is located in front of the third fixing plate (17).

4. The lifting mechanism for a tobacco curing barn according to claim 1, characterized in that: A stepper motor (2) is fixedly installed on one side inside the movable base (1). The output shaft of the stepper motor (2) is connected to a threaded rod (3) through a coupling. One side of the outer surface of the threaded rod (3) is connected to an inner threaded sleeve (4) through a threaded structure. The upper end face of the inner threaded sleeve (4) is fixed to the lower end face of the movable L-shaped bracket (5).

5. A lifting mechanism for a tobacco curing barn according to claim 4, characterized in that: The front end of the threaded rod (3) is located inside the housing of the movable base (1), and the threaded rod (3) located inside the housing of the movable base (1) is connected to the movable base (1) by a roller bearing.

6. A lifting mechanism for a tobacco curing barn according to claim 5, characterized in that: A control panel is fixedly installed on one side of the outer surface of the fixed bracket (21), and the stepper motor (2), the first lifting slide (7), the second lifting slide (8) and the third lifting slide (9) are all electrically connected to the control panel.

7. A lifting mechanism for a tobacco curing barn according to claim 6, characterized in that: The stepper motor (2) is provided with a protective cover plate located on the lower end face of the movable base (1), and the movable base (1) and the protective cover plate are fixed together by screws.

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