A type of elevator for tobacco curing barns

Abstract

This utility model discloses a lifting machine for a tobacco curing barn, including columns and tobacco racks. The columns on both sides have gaps between them and the walls of the tobacco curing barn, and the tobacco racks on both sides are positioned within these gaps. A double tobacco rack is mounted on the middle column. Two connected tobacco racks clamp the middle column from the left and right sides. The tobacco racks on both sides and the double tobacco rack are slidably mounted on the columns via a first pulley assembly and a second pulley assembly, respectively. Upper limit switches and lower limit switches are respectively installed on the columns at the top and bottom, and upper limit plates and lower limit plates are installed at corresponding positions on the tobacco racks. The lifting and lowering positions of the tobacco racks are limited by the limit plates and limit switches. By positioning the tobacco racks on both sides within the gaps between the tobacco curing barn and the columns, the width of the tobacco curing barn is fully utilized, and existing tobacco clips can be accommodated without the need for replacement. During lifting and lowering, the columns on both sides can limit the movement of the tobacco racks, preventing them from swaying left and right.

Description

Technical Field

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

[0002] Tobacco curing barns are crucial facilities in tobacco agricultural production, primarily used for curing freshly harvested tobacco leaves. Their core function is to improve tobacco quality, ensure storage performance, and optimize economic value through artificially controlled environmental conditions. Most existing tobacco curing barns have fixed beams at the top for suspending tobacco clips. During operation, a lift is needed to suspend the clips one by one onto the beams, resulting in high labor intensity and low efficiency. While some existing lifts on the market can automatically raise and lower, their design reduces the distance between the beams suspending the clips, rendering existing clips unusable and requiring large-scale replacement, leading to high costs. Therefore, developing an automatically raising and lowering lift that can be installed in existing tobacco curing barns without requiring clip replacement has promising application prospects. Utility Model Content

[0003] The purpose of this utility model is to provide a lifting machine for tobacco curing barns that addresses the above-mentioned problems, is easy to disassemble and transport, has a stable structure, and can be adapted to existing tobacco clips.

[0004] The technical solution of this utility model is as follows:

[0005] A lifting machine for a tobacco curing barn includes at least two columns and at least two tobacco racks. The columns on either side have gaps between them and the walls of the tobacco curing barn, and the tobacco racks on either side are positioned within these gaps. A double tobacco rack is mounted on the column in the middle position. Two connected tobacco racks clamp the middle column from the left and right sides. The tobacco racks on either side and the double tobacco rack are slidably mounted on the columns via a first pulley assembly and a second pulley assembly, respectively. One of the columns has an upper limit switch and a lower limit switch, respectively, positioned at the top and bottom. An upper limit plate and a lower limit plate are also provided at corresponding positions on the tobacco racks. The lifting and lowering positions of the tobacco racks are limited by the limit plates and limit switches.

[0006] With the above structure, by placing the tobacco racks on both sides within the gap between the tobacco curing barn and the uprights, the width of the curing barn can be fully utilized, accommodating existing tobacco clips without the need for replacement. Furthermore, during raising and lowering, the uprights on both sides can limit the movement of the tobacco racks, preventing them from swaying left and right. The device also includes upper and lower limit switches, allowing the tobacco racks to automatically stop rising and falling when they reach the predetermined positions.

[0007] Furthermore, a top-level stretcher is detachably installed on the top of the column; a second-level stretcher is detachably installed below the top-level stretcher; a roller is rotatably installed at one end of the second-level stretcher, and the roller is connected to the first pulley assembly and the second pulley assembly via a cable drive, and at least two sets of pressure blocks are detachably installed on the roller.

[0008] Furthermore, the first pulley assembly includes a first fixed pulley and a first movable pulley; the first fixed pulley is detachably mounted on the top stretcher via a first fixed pulley seat, and the first movable pulley is fixedly mounted on the cigarette racks on both sides; one end of the cable passes through the first fixed pulley and the first movable pulley in sequence and is fixedly connected to the first fixed pulley seat, and the other end of the cable is mounted on the roller.

[0009] Furthermore, the second pulley assembly includes a second fixed pulley and a second movable pulley; the second fixed pulley is detachably mounted on the top layer stretcher via a second fixed pulley seat, and the second fixed pulley is located on both sides of the middle column; two second movable pulleys are fixedly mounted on the double smoke frame, and the installation direction of the second movable pulley is perpendicular to the installation direction of the second fixed pulley; one end of the cable passes through the second fixed pulley and the second movable pulley in sequence and is fixedly connected to the second fixed pulley seat, and the other end is mounted on the roller.

[0010] With the above structure, when it is necessary to control the rise of the smoke frame, the brake motor is turned on to drive the roller to rotate and wind up the cable. The smoke frames on both sides and the double smoke frame in the middle rise under the traction of their respective cables.

[0011] Furthermore, the bottom of the cigarette rack is connected by chains to at least two layers of hanging rods.

[0012] With the above structure, tobacco clips can be hung on the hanging rod, making full use of the height space of the tobacco curing room.

[0013] Furthermore, the top-level stretcher includes at least two longitudinal bars, and the ends of two adjacent longitudinal bars can be detachably connected to a crossbar; the upper part of the column is detachably connected to the longitudinal bars through a first fixed pulley seat, a second fixed pulley seat, a second connecting seat and a fourth connecting seat respectively; U-shaped supports for installing crossbars are fixed to both sides of the first fixed pulley seat.

[0014] Furthermore, the side wall of the second connecting seat is fixed with a U-shaped support for mounting the crossbar.

[0015] Furthermore, to improve installation strength, a reinforcing rod can be detachably installed between the middle of two adjacent longitudinal rods; U-shaped supports are fixed to the side walls of the longitudinal rods and both sides of the second fixed pulley seat; the two ends of the reinforcing rod can be detachably installed on the U-shaped supports.

[0016] Furthermore, the lower ends of the two side columns are detachably connected to the base rod via the first connecting seat; the lower end of the middle column is detachably connected to the base rod via the sixth connecting seat; and at least two L-shaped supports are fixedly connected to the base rod.

[0017] Furthermore, the second-layer stretcher includes at least two connecting rods that are detachably installed between two adjacent uprights; a reinforcing bracket is fixedly connected between the second-layer stretcher and the top-layer stretcher; and the two ends of the roller are rotatably installed on the second-layer stretcher.

[0018] It also includes a drive mechanism for driving the rotation of the roll; the drive mechanism includes a brake motor, a reducer, and a gear set mounted on the accelerator output shaft and the roll; the reducer is mounted on the top stretcher and the second stretcher via a mounting plate.

[0019] With the above structure, the columns are detachably connected to the top-level stretcher, the second-level stretcher, and the bottom pole, which facilitates assembly and disassembly and can effectively save transportation costs.

[0020] Compared with existing technologies, the beneficial effects of this utility model are:

[0021] This application sets the tobacco racks on both sides in the gap between the tobacco curing barn and the uprights. On the one hand, it can make full use of the width space of the tobacco curing barn and can accommodate the existing tobacco clips without replacing them with new ones. On the other hand, when raising and lowering, the uprights on both sides can limit the tobacco racks on both sides and prevent the tobacco racks from swaying from side to side. Attached Figure Description

[0022] Figure 1 This is a front view of the overall structure of the device in this application.

[0023] Figure 2 This is a side view of the middle structure of the device in this application.

[0024] Figure 3 for Figure 2 Enlarged view of a local structure.

[0025] Figure 4 These are side views of the two sides of the device in this application.

[0026] Figure 5 for Figure 4 Enlarged view of a local structure.

[0027] Figure 6 This is a top view of the top stretcher structure of the device in this application.

[0028] Figure 7 This is a schematic diagram of the overall framework of the device in this application.

[0029] Figure 8 for Figure 7 Enlarged view of the structure at point B in the middle.

[0030] Figure 9 for Figure 7 Enlarged view of the structure at point C.

[0031] Figure 10 for Figure 7 Enlarged view of the structure at point D.

[0032] Figure 11 for Figure 7 Enlarged view of the structure at point E in the middle.

[0033] Figure 12 for Figure 7 Enlarged view of the structure at point A in the middle.

[0034] Reference numerals: 1-Column, 2-Cured tobacco barn, 3-Tobacco rack, 4-Double tobacco rack, 5-Hanging rod, 6-Horizontal bar, 7-Vertical bar, 8-Secondary stretcher, 9-Rolling roller, 10-Drive mechanism, 11-First fixed pulley, 12-First fixed pulley seat, 13-Second fixed pulley, 14-Second fixed pulley seat, 15-First movable pulley, 16-Second movable pulley, 17-Bottom rod, 18-Reinforcing rod, 19-Second connecting seat, 21-U-shaped support, 22-Fourth connecting seat, 24-First connecting seat, 25-L-shaped support, 26-Pressure block, 27-Reinforcing bracket, 28-Chain, 29-Cable, 30-Sixth connecting seat, 31-Upper limit plate, 32-Upper limit switch, 33-Connecting frame, 34-Lower limit switch. Detailed Implementation

[0035] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0037] Please see Figure 1-12 A type of elevator for tobacco curing barns, such as Figure 1 , Figure 2 and Figure 4As shown, the system includes at least two uprights 1 and at least two tobacco racks 3. The uprights 1 on both sides have gaps between them and the walls of the tobacco curing barn 2. The tobacco racks 3 on both sides are positioned within these gaps. A double tobacco rack 4 is mounted on the upright 1 in the middle position. Two connected tobacco racks 3 in the double tobacco rack 4 clamp the middle upright 1 from the left and right sides. The tobacco racks 3 on both sides and the double tobacco rack 4 are slidably mounted on the uprights 1 via a first pulley assembly and a second pulley assembly, respectively. An upper limit switch 32 and a lower limit switch 34 are respectively installed on one of the uprights 1, and an upper limit plate 31 and a lower limit plate are installed at corresponding positions on the tobacco racks 3. The limit plates and limit switches restrict the lifting and lowering positions of the tobacco racks 3. When the tobacco racks 3 rise or fall to a predetermined position, they automatically stop lifting and lowering. At least two hanging rods 5 are connected to the bottom of the tobacco racks 3 via chains 28. Tobacco clips can be suspended from the hanging rods 5, making full use of the height space of the tobacco curing barn.

[0038] By placing the tobacco racks 3 on both sides within the gap between the tobacco curing barn 2 and the uprights 1, and as close to the tobacco curing barn as possible, the width of the tobacco curing barn can be fully utilized to accommodate the existing tobacco clips. Furthermore, during raising and lowering, the uprights 1 on both sides can limit the movement of the tobacco racks 3, preventing them from swaying left and right. Using double tobacco racks 4 instead of a single tobacco rack provides greater strength, and the cooperation between the uprights 1 and the double tobacco racks 4 further prevents them from swaying left and right during raising and lowering.

[0039] The top of the column 1 is detachably equipped with a top-level stretcher; a second-level stretcher 8 is detachably installed under the top-level stretcher; a roller 9 is rotatably installed at one end of the second-level stretcher 8, and the roller 9 is connected to the first pulley assembly and the second pulley assembly through a cable 29, and at least two sets of pressure blocks 26 are detachably installed on the roller 9.

[0040] The second-layer stretcher 8 includes at least two connecting rods that are detachably installed between two adjacent columns 1; a reinforcing bracket 27 is fixedly connected between the second-layer stretcher 8 and the top-layer stretcher; the two ends of the roller 9 are rotatably installed on the second-layer stretcher 8.

[0041] It also includes a drive mechanism 10 for driving the rotation of the roller 9; the drive mechanism includes a brake motor, a reducer and a gear set mounted on the accelerator output shaft and the roller 9; the reducer is mounted on the top stretcher and the second stretcher 8 via a mounting plate.

[0042] like Figure 5As shown, the first pulley assembly includes a first fixed pulley 11 and a first movable pulley 15; the first fixed pulley 11 is detachably mounted on the top stretcher via a first fixed pulley seat 12, and the first movable pulley 15 is fixedly mounted on the cigarette racks 3 on both sides; one end of the cable 29 passes through the first fixed pulley 11 and the first movable pulley 15 in sequence and is fixedly connected to the first fixed pulley seat 12, and the other end of the cable 29 is mounted on the roller 9.

[0043] like Figure 3 As shown, the second pulley assembly includes a second fixed pulley 13 and a second movable pulley 16. The second fixed pulley 13 is detachably mounted on the top stretcher via a second fixed pulley seat 14. In order to make the movement of the double smoke frame 4 more stable, the second fixed pulley 13 is located on both sides of the middle column 1. The two second movable pulleys 16 are fixedly mounted on the double smoke frame 4, and the installation direction of the second movable pulleys 16 is perpendicular to the installation direction of the second fixed pulleys 13. One end of the cable 29 passes through the second fixed pulley 13 and the second movable pulley 16 in sequence and is fixedly connected to the second fixed pulley seat 14. The other end is mounted on the roller 9.

[0044] When it is necessary to control the rise of the smoke rack 3, the brake motor is turned on to drive the roller 9 to rotate and wind up the cable 29. The smoke racks 3 on both sides and the double smoke racks 4 in the middle rise under the traction of their respective cables 29.

[0045] like Figure 6 and Figure 7 As shown, the top-level stretcher includes at least two longitudinal bars 7, and a crossbar 6 can be detachably connected to both ends of any two adjacent longitudinal bars 7; as Figure 9 , Figure 10 As shown, the upper part of the column 1 is detachably connected to the vertical rod 7 via the first fixed pulley seat 12, the second fixed pulley seat 14, the second connecting seat 19, and the fourth connecting seat 22; Figure 11 As shown, the upper end of the column 1 is connected to the fourth connecting seat 22 via a screw; the fourth connecting seat 22 is fixedly connected to the lower end of the longitudinal rod 7; U-shaped supports 21 for installing the crossbar 6 are fixedly connected to both sides of the first fixed pulley seat 12. Figure 8 As shown, the side wall of the second connecting seat 19 is fixed with a U-shaped support 21 for mounting the crossbar 6.

[0046] To improve installation strength, a reinforcing rod 18 can be detachably installed between the middle of two adjacent longitudinal rods 7; U-shaped supports 21 are fixedly connected to the side wall of the longitudinal rod 7 and both sides of the second fixed pulley seat 14; the two ends of the reinforcing rod 18 can be detachably installed on the U-shaped supports 21.

[0047] like Figure 12As shown, the lower ends of the two side columns 1 are detachably connected to the base rod 17 via the first connecting seat 24; the lower end of the middle column 1 is detachably connected to the base rod 17 via the sixth connecting seat 30; at least two L-shaped supports 25 are fixedly connected to the base rod 17.

[0048] The column 1 is detachably connected to the top-level stretcher, the second-level stretcher 8, and the bottom pole 17, which facilitates disassembly and assembly and can effectively save transportation costs.

[0049] Working principle:

[0050] During operation, the tobacco rack 3 is controlled to remain at a suitable height for handling and suspending the tobacco clips. The tobacco clips with the tobacco leaves attached are then suspended from the tobacco rack 3 and the appropriately sized hanging rod 5. After suspension, the brake motor is activated, driving the roller 9 to rotate and winding up the cable 29. The tobacco racks 3 on both sides and the double tobacco rack 4 in the middle rise under the traction of their respective cables 29. When the upper limit plate 31 contacts the upper limit switch 32, the brake motor stops rotating, and the tobacco racks 3 and double tobacco rack 4 stop rising. Then, the tobacco clips are hung on the lower hanging rod 5.

[0051] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A hoist for a tobacco curing barn, characterized in that, It includes at least two columns (1) and at least two tobacco racks (3). There is a gap between the columns (1) on both sides and the wall of the tobacco curing barn (2). The tobacco racks (3) on both sides are set in the gap between the columns (1) on both sides and the wall of the tobacco curing barn (2). A double tobacco rack (4) is set on the column (1) in the middle position. The two connected tobacco racks (3) in the double tobacco rack (4) clamp the middle column (1) from the left and right sides. The tobacco racks (3) on both sides and the double tobacco rack (4) are slidably set on the column (1) by the first pulley assembly and the second pulley assembly, respectively. An upper limit switch (32) and a lower limit switch (34) are set on one of the columns (1) at the top and bottom, respectively. An upper limit plate (31) and a lower limit plate are set at the corresponding positions of the tobacco rack (3). The lifting position of the tobacco rack (3) is restricted by the limit plate and the limit switch.

2. The elevator for a tobacco curing barn according to claim 1, characterized in that, The top of the column (1) is detachably provided with a top-level stretcher; a second-level stretcher (8) is detachably installed under the top-level stretcher; a roller (9) is rotatably provided at one end of the second-level stretcher (8), and the roller (9) is connected to the first pulley assembly and the second pulley assembly through a cable (29), and at least two sets of pressure blocks (26) are detachably provided on the roller (9).

3. A lifting machine for a tobacco curing barn according to claim 1 or 2, characterized in that, The first pulley assembly includes a first fixed pulley (11) and a first movable pulley (15); the first fixed pulley (11) is detachably mounted on the top stretcher via a first fixed pulley seat (12), and the first movable pulley (15) is fixedly mounted on the cigarette racks (3) on both sides; one end of the cable (29) passes around the first fixed pulley (11) and the first movable pulley (15) in sequence and is fixedly connected to the first fixed pulley seat (12), and the other end of the cable (29) is mounted on the roller (9).

4. A lifting machine for a tobacco curing barn according to claim 1 or 2, characterized in that, The second pulley assembly includes a second fixed pulley (13) and a second movable pulley (16); the second fixed pulley (13) is detachably mounted on the top stretcher via a second fixed pulley seat (14), and the second fixed pulley (13) is mounted on both sides of the middle column (1); the two second movable pulleys (16) are fixedly mounted on the double smoke frame (4), and the installation direction of the second movable pulleys (16) is perpendicular to the installation direction of the second fixed pulleys (13); one end of the cable (29) passes around the second fixed pulley (13) and the second movable pulley (16) in sequence and is fixedly connected to the second fixed pulley seat (14), and the other end is mounted on the roller (9).

5. The elevator for a tobacco curing barn according to claim 1, characterized in that, The bottom of the cigarette rack (3) is connected to at least two layers of hanging rods (5) by a chain (28).

6. The elevator for a tobacco curing barn according to claim 2, characterized in that, The top-level stretcher includes at least two longitudinal bars (7), and the two ends of two adjacent longitudinal bars (7) can be detachably connected to a crossbar (6); the upper part of the column (1) is detachably connected to the longitudinal bars (7) through a first fixed pulley seat (12), a second fixed pulley seat (14), a second connecting seat (19) and a fourth connecting seat (22); U-shaped supports (21) for installing the crossbar (6) are fixed on both sides of the first fixed pulley seat (12).

7. A lifting machine for a tobacco curing barn according to claim 6, characterized in that, The side wall of the second connecting seat (19) is fixed with a U-shaped support (21) for installing the crossbar (6).

8. A lifting machine for a tobacco curing barn according to claim 7, characterized in that, A reinforcing rod (18) can be detachably installed between the middle of the two adjacent longitudinal rods (7); U-shaped supports (21) are fixedly connected to the side wall of the longitudinal rod (7) and both sides of the second fixed pulley seat (14); the two ends of the reinforcing rod (18) can be detachably installed on the U-shaped supports (21).

9. A lifting machine for a tobacco curing barn according to claim 1, characterized in that, The lower ends of the two side columns (1) are detachably connected to the base rod (17) via the first connecting seat (24); the lower end of the middle column (1) is detachably connected to the base rod (17) via the sixth connecting seat (30); at least two L-shaped supports (25) are fixedly connected to the base rod (17).

10. A lifting machine for a tobacco curing barn according to claim 2, characterized in that, The second-layer stretcher (8) includes at least two connecting rods that are detachably installed between two adjacent columns (1); a reinforcing bracket (27) is fixedly connected between the second-layer stretcher (8) and the top-layer stretcher; the two ends of the roller (9) are rotatably installed on the second-layer stretcher (8); It also includes a drive mechanism (10) for driving the rotation of the roller (9); the drive mechanism includes a brake motor, a reducer and a gear set mounted on the accelerator output shaft and the roller (9); the reducer is mounted on the top stretcher and the second stretcher (8) via a mounting plate.

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