Tobacco leaf outputting and collecting mechanism

Abstract

The invention discloses a tobacco leaf outputting and collecting mechanism which comprises a rack, the rack is provided with a walking mechanism and a collecting mechanism, the collecting mechanism comprises two collecting assemblies which are arranged in a bilateral symmetry mode, and each collecting assembly comprises a first conveying belt, a second conveying belt and a third conveying belt which are arranged on the rack. The lower portion of the third conveying belt can firstly make contact with tobacco leaves from the first conveying belt relative to the lower portion of the second conveying belt, the first conveying belt can receive the falling tobacco leaves and convey the tobacco leaves to the position between the second conveying belt and the third conveying belt, the upper portion of the third conveying belt is located below the upper portion of the second conveying belt, and the rack is provided with a material collecting box. The third conveying belt firstly lifts tobacco leaves to enable the tobacco leaves conveyed by the first conveying belt to generate partial upward bending deformation, the tobacco leaves are bent upwards so as to be in contact with the second conveying belt, and the second conveying belt and the third conveying belt play a role in clamping and upward conveying the tobacco leaves. The tobacco leaves upwards move to be separated from the second conveying belt and the third conveying belt and then directionally fall into a collecting box.

Description

Technical Field

[0001] This invention relates to the field of tobacco planting equipment technology, specifically to a tobacco leaf output and collection mechanism. Background Technology

[0002] In tobacco cultivation, tobacco leaves mature in layers. Harvesting the leaves in the middle section of the plant using traditional manual methods is time-consuming and labor-intensive. Chinese invention patent CN216673887U discloses a tobacco cutting and harvesting machine. The cutting platform cuts the tobacco stems and leaves, while the collection platform collects the cut stems and leaves, enabling mechanized harvesting of the upper tobacco leaves and stems in a single operation. The machine can also be used for sorting and bundling harvested leaves, effectively improving harvesting efficiency and reducing labor intensity. The inventors discovered that when this cutting and harvesting machine cuts the middle leaves and stems, immature upper leaves are cut off along with the middle leaves and stems, affecting the normal growth of the tobacco plant. Furthermore, when the middle leaves are separated from the stem by an external harvesting mechanism and fall downwards, manual collection is not only time-consuming and labor-intensive but may also result in crushing and damage to the leaves. There is an urgent need for a tobacco leaf output collection mechanism that can achieve directional and automatic collection of tobacco leaves. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a tobacco leaf output collection mechanism that can realize the directional collection and automatic collection of tobacco leaves.

[0004] To solve the above-mentioned technical problems, the invention includes a frame with a walking mechanism and a collection mechanism. The collection mechanism includes two symmetrically arranged collection components. Each collection component includes a first conveyor belt, a second conveyor belt, and a third conveyor belt mounted on the frame. The third conveyor belt is located outside the second conveyor belt. The second and third conveyor belts can contact the front and back sides of the tobacco leaves respectively and convey the tobacco leaves upward. The lower part of the third conveyor belt, relative to the lower part of the second conveyor belt, can contact the tobacco leaves from the first conveyor belt first. The first conveyor belt can catch fallen tobacco leaves and convey them between the second and third conveyor belts. The upper part of the third conveyor belt is located below the upper part of the second conveyor belt. The frame has an open-top receiving box located outside the third conveyor belt. The distance between the two second conveyor belts in the two collection components gradually increases from bottom to top, and the distance between the two third conveyor belts in the two collection components gradually increases from bottom to top.

[0005] With the above structure, after the tobacco leaves are separated from the tobacco plants by the external picking mechanism through the collection component, the falling tobacco leaves are caught by the first conveyor belt. The tobacco leaves are laid flat on the first conveyor belt. As the first conveyor belt transports the tobacco leaves, the third conveyor belt first contacts the tobacco leaves from the first conveyor belt. The third conveyor belt contacts and adjusts the posture of the tobacco leaves laid flat on the first conveyor belt. The third conveyor belt first lifts the tobacco leaves, and the third conveyor belt causes the tobacco leaves from the first conveyor belt to undergo a partial upward bending deformation. The tobacco leaves bend upward so that they can be contacted by the second conveyor belt. Then, both sides of the tobacco leaves can contact the second and third conveyor belts. The second and third conveyor belts play a role in clamping and transporting the tobacco leaves upward. Because the distance between the two second conveyor belts and the distance between the two third conveyor belts gradually increases from bottom to top, and the second and third conveyor belts are inclined outwards from bottom to top, they transport the tobacco leaves upwards at an angle, preventing them from falling randomly when they detach from the second and third conveyor belts. The tobacco leaves are transported and fall in a directional manner. The upper part of the third conveyor belt is located below the upper part of the second conveyor belt. When the tobacco leaves are transported upwards, they first detach from the third conveyor belt. Under the influence of gravity, the tobacco leaves naturally bend downwards. As the second conveyor belt continues to contact the tobacco leaves, it provides thrust to the bent tobacco leaves, ensuring that the tobacco leaves fall accurately downwards, preventing them from flying outwards, and ensuring reliable reception of the tobacco leaves by the collection box. This achieves directional and automatic collection of tobacco leaves.

[0006] Furthermore, the frame is equipped with two brush assemblies, each including a brush holder with rotatable brush rods. Each brush rod has bristles, and the brush rods are located between the two first conveyor belts. The brush holder has a transmission component that transmits power from the first conveyor belts to the brush rods. By setting up the brush assemblies, the rotating brush rods sweep downward-falling tobacco leaves towards the first conveyor belts. The sweeping action of the two brush rods reduces the occurrence of tobacco leaves falling through the gap between the two first conveyor belts. The two brush rods occupy part of the space between the two first conveyor belts, further reducing the occurrence of tobacco leaves falling through the gap. Because the brush rods have bristles, damage to the tobacco plant stems is minimal.

[0007] Furthermore, the brush bar can be positioned close to or away from the first conveyor belt. When the brush bar is needed, it should be close to the first conveyor belt; when not in use, it should be moved away from the first conveyor belt, allowing it to be used as needed according to actual operating conditions.

[0008] Furthermore, each brush rod is connected to the frame via two brush holders. Each brush holder includes a first connecting rod and a straight second connecting rod. The first connecting rod includes a transverse straight portion and a longitudinal straight portion. The longitudinal straight portion is located inside the transverse straight portion and extends downwards. The first conveyor belt includes two belt rollers rotatably connected to the frame and a conveyor belt fitted onto the two belt rollers. The two belt rollers are spaced apart vertically. Either of the two belt rollers is driven to rotate by an external power device. The outer side of the transverse straight portion is rotatably connected to the lower belt of the first conveyor belt. On the roller, the brush rod is rotatably connected to the inner side of the transverse straight section of the first connecting rod in two opposing brush frames. The transmission assembly includes two pulleys and a transmission belt mounted on the two pulleys. The two pulleys are respectively located on the lower belt roller of the brush rod and the first conveyor belt. The outer end of the second connecting rod is hinged to the frame. The second connecting rod is provided with a long strip-shaped sliding groove. The lower part of the longitudinal straight section can travel in the sliding groove. The frame is hinged to a power cylinder whose output end can perform reciprocating linear motion. The output end of the power cylinder is hinged to the first connecting rod. By configuring a first connecting rod, a second connecting rod, and a power cylinder, the extension and retraction of the output end of the power cylinder drives the first connecting rod to swing around the axis of the lower belt roller in the first conveyor belt. When the first connecting rod swings, the lower side of its longitudinal straight portion travels within the groove of the second connecting rod, causing the second connecting rod to swing around its hinge point with the frame. The swinging of the first and second connecting rods also causes the brush rods to swing, preventing the transmission belt in the transmission assembly from breaking, thus allowing the brush rods to approach and move away from the first conveyor belt. The first connecting rod, the second connecting rod, and the power cylinder ensure reliable support for the brush rods.

[0009] Furthermore, the distance between the two first conveyor belts gradually increases from bottom to top, and the first conveyor belts are inclined upwards from the inside to the outside. By setting the first conveyor belts to be inclined, after the tobacco leaves are received by the first conveyor belts, the inclined first conveyor belts make the tobacco leaves on the first conveyor belts have an inclined posture, and the larger angle between the third conveyor belt and the first conveyor belts makes it easier for the third conveyor belt to contact the tobacco leaves on the first conveyor belts.

[0010] In summary, the present invention has the advantages of reasonable structure and convenient use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure from the front view of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure viewed in section along line AA; Figure 3 It is a three-dimensional structural diagram of part of the frame, the first conveyor belt, the second conveyor belt, the third conveyor belt and the brush assembly; Figure 4 yes Figure 3 Enlarged view of a section in area B; In the diagram: 1. Frame; 2. Traveling mechanism; 3. Collection assembly; 31. First conveyor belt; 32. Second conveyor belt; 33. Third conveyor belt; 34. Collection box; 4. Brush assembly; 41. Brush holder; 411. First connecting rod; 4111. Lateral straight section; 4112. Longitudinal straight section; 412. Second connecting rod; 4121. Slide groove; 42. Brush rod; 43. Transmission assembly; 431. Pulley; 432. Transmission belt; 5. Power cylinder. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention and therefore showing only the components relevant to the invention. For ease of understanding, Figure 1 The top part is the top part of the invention. Figure 1 The following is the lower part of the invention. Figure 1 The left side is the front side of the invention. Figure 1 The right side is the rear side of the invention. Figure 2 The left side is the left side of the invention. Figure 2 The right side is the right side of this invention.

[0013] Reference Figures 1 to 4 The present invention includes a frame 1, which is equipped with a walking mechanism 2 capable of movement. The walking mechanism 2 can be a tracked vehicle and can move to a position close to the tobacco plant. The frame 1 is equipped with a collection mechanism, which includes two collection components 3 arranged symmetrically from left to right. The collection components 3 include a first conveyor belt 31, a second conveyor belt 32, and a third conveyor belt 33 mounted on the frame 1. The third conveyor belt 33 is located outside the second conveyor belt 32. The second conveyor belt 32 and the third conveyor belt 33 can respectively contact the front and back sides of the tobacco leaf and transport the tobacco leaf upward. The distance between the second conveyor belt 32 and the third conveyor belt 33 is small, so that the tobacco leaf can be contacted by friction and transported upward. The distance between the two second conveyor belts 32 in the two collection components 3 gradually increases from bottom to top, and the distance between the two third conveyor belts 33 in the two collection components 3 gradually increases from bottom to top. The area between the two third conveyor belts 33 is the inner side of the present invention, that is, the second conveyor belts 32 and the third conveyor belts 33 are inclined outward from bottom to top. The lower part of the third conveyor belt 33 is positioned below the lower part of the second conveyor belt 32, allowing it to contact the tobacco leaves from the first conveyor belt 31 first. The first conveyor belt 31 catches falling tobacco leaves and transports them between the second and third conveyor belts. The lower part of the third conveyor belt 33, located below the first conveyor belt 31, ensures that it effectively receives the tobacco leaves from the first conveyor belt 31.

[0014] Reference Figures 1 to 4The first conveyor belt 31 is arranged generally in a left-right direction. It transports fallen tobacco leaves roughly in this direction until they contact the third conveyor belt. Preferably, the distance between the two first conveyor belts 31 gradually increases from bottom to top, and the first conveyor belts 31 are inclined upwards from the inside out. After the tobacco leaves are received by the first conveyor belt 31, the inclined first conveyor belt 31 causes the tobacco leaves on it to have an inclined posture. The angle between the third conveyor belt 33 and the first conveyor belt 31 is relatively large, facilitating contact between the third conveyor belt 33 and the tobacco leaves on the first conveyor belt 31. The upper part of the third conveyor belt 33 is located below the upper part of the second conveyor belt 32. The frame 1 has a top-opening receiving box 34 located outside the third conveyor belt 33. The frame 1 has two brush assemblies 4, each including a brush holder 41 with rotatable brush rods 42. The brush rod 42 has bristles, which can be made of PVC bristles, pig bristles, or nylon bristles with a certain degree of elasticity. The brush rod 42 in the two brush assemblies 4 is located between the two first conveyor belts 31. The brush holder 41 is equipped with a transmission assembly 43 that transmits the power from the first conveyor belts 31 to the brush rod 42. By setting up the brush assembly 4, when the brush rod 42 rotates, it can sweep the downward-falling tobacco leaves towards the first conveyor belts 31. The sweeping action of the two brush rods 42 reduces the occurrence of tobacco leaves falling through the gap between the two first conveyor belts 31. The two brush rods 42 can occupy part of the space between the two first conveyor belts 31, further reducing the occurrence of tobacco leaves falling through the gap between the two first conveyor belts 31. Because the brush rod 42 has bristles, it causes less damage to the stems of the tobacco plants.

[0015] Reference Figures 1 to 4Preferably, the brush rod 42 can be positioned close to or away from the first conveyor belt 31. When the brush rod 42 is needed, it is positioned close to the first conveyor belt 31; when not in use, it is positioned away from the first conveyor belt 31, allowing for on-demand use according to actual operating conditions. Specifically, each brush rod 42 is connected to the frame 1 via two brush holders 41. The two brush holders 41 corresponding to one brush rod 42 are located on opposite sides of the brush rod 42 along its axial direction, with the axis of the brush rod 42 parallel to the front-to-back horizontal direction. The brush holder 41 includes a first connecting rod 411 and a straight second connecting rod 412. The first connecting rod 411 includes a transverse straight portion 4111 and a longitudinal straight portion 4112. The longitudinal straight portion 4112 is located inside the transverse straight portion 4111 and extends downwards. The first connecting rod 411 is approximately inverted L-shape. The first conveyor belt 31 includes two belt rollers rotatably connected to the frame 1 and a conveyor belt mounted on the two belt rollers. The two belt rollers are spaced apart vertically. Either of the two belt rollers is driven to rotate by an external power device, which can be an electric motor. The first conveyor belt 31, the second conveyor belt 32, and the third conveyor belt 33 can all be commercially available electric-driven belt conveyors. The outer side of the transverse straight section 4111 can be rotatably connected to the lower belt roller in the first conveyor belt 31 via a bearing to prevent the rotation of the belt roller from driving the first connecting rod 411 to rotate. The brush rod 42 can be rotatably connected to the inner side of the transverse straight section 4111 of the first connecting rod 411 in the two opposing brush holders 41 via a bearing seat or bearing. The transmission assembly 43 includes two pulleys 431 and a transmission belt 432 mounted on the two pulleys 431. The two pulleys 431 are respectively located on the brush rod 42 and the lower belt roller in the first conveyor belt 31. The outer end of the second connecting rod 412 is hinged to the frame 1 via a hinge shaft. The second connecting rod 412 is provided with a long, narrow groove 4121. The frame 1 may be provided with a limiting block or limiting element to limit the position of the first connecting rod 411 in the axial direction of the belt roller of the first conveyor belt 31.

[0016] The lower part of the longitudinal straight section 4112 can travel within the slide groove 4121. A rotatable roller can be provided at the lower part of the longitudinal straight section 4112. When the first connecting rod 411 swings, the roller rolls within the slide groove 4121, enabling the lower part of the longitudinal straight section 4112 to roll and travel within the slide groove 4121. Alternatively, a cylinder can be provided at the lower part of the longitudinal straight section 4112, sliding within the slide groove 4121. When the first connecting rod 411 swings, the cylinder slides within the slide groove 4121, enabling the lower part of the longitudinal straight section 4112 to slide and travel within the slide groove 4121. The frame 1 can be hinged to a power cylinder 5 with an output end capable of reciprocating linear motion via a hinge shaft. The side of the power cylinder 5 furthest from the output end is hinged to the frame 1 via a hinge shaft. The output end of the power cylinder 5 is hinged to the first connecting rod 411 via a hinge shaft. The output end of the power cylinder 5 can extend and retract in a linear direction. The power cylinder 5 can be an electric push rod or a hydraulic cylinder. By configuring a first connecting rod 411, a second connecting rod 412, and a power cylinder 5, the extension and retraction of the output end of the power cylinder 5 can drive the first connecting rod 411 to swing around the axis of the lower roller in the first conveyor belt 31. When the first connecting rod 411 swings, the lower side of the longitudinal straight portion 4112 moves within the groove 4121 of the second connecting rod 412, causing the second connecting rod 412 to swing around its hinge point with the frame 1. When the first connecting rod 411 and the second connecting rod 412 swing, the brush rod 42 swings, preventing the transmission belt 432 in the transmission assembly 43 from being broken, thus allowing the brush rod 42 to approach and move away from the first conveyor belt 31. The first connecting rod 411, the second connecting rod 412, and the power cylinder 5 ensure reliable support for the brush rod 42.

[0017] In use, by setting up the collection component 3, after the external picking mechanism separates the tobacco leaves from the tobacco plant, the falling tobacco leaves are caught by the first conveyor belt 31. The tobacco leaves are laid flat on the first conveyor belt 31. As the first conveyor belt 31 conveys the tobacco leaves, the third conveyor belt 33 first contacts the tobacco leaves from the first conveyor belt 31. The third conveyor belt 33 contacts and adjusts the posture of the tobacco leaves laid flat on the first conveyor belt 31. The third conveyor belt 33 first lifts the tobacco leaves, and the third conveyor belt 33 causes the tobacco leaves sent by the first conveyor belt 31 to undergo a partial upward bending deformation. The tobacco leaves bend upward so that they can be contacted by the second conveyor belt 32. Then, both sides of the tobacco leaves can contact the second conveyor belt 32 and the third conveyor belt 33. The second conveyor belt 32 and the third conveyor belt 33 play a role in clamping and conveying the tobacco leaves upward. Because the distance between the two second conveyor belts 32 and the distance between the two third conveyor belts 33 gradually increases from bottom to top, and the second and third conveyor belts 32 and 33 are inclined outwards from bottom to top, they transport the tobacco leaves upwards at an angle, preventing them from falling randomly when they detach from the second and third conveyor belts 32 and 33. The tobacco leaves are transported and fall in a directional manner. The upper part of the third conveyor belt 33 is located below the upper part of the second conveyor belt 32. When the tobacco leaves are transported upwards, they first detach from the third conveyor belt 33. Under the influence of gravity, the inclined tobacco leaves naturally bend downwards. As the second conveyor belt 32 continues to contact the tobacco leaves, it provides a pushing force to the bent tobacco leaves, ensuring that the tobacco leaves fall accurately downwards, preventing them from flying outwards, and ensuring reliable reception of the tobacco leaves by the receiving box 34. This achieves directional and automatic collection of tobacco leaves.

[0018] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of this patent, all of which should fall within the protection scope of the present invention.

Claims

1. A tobacco leaf output collecting mechanism, comprising a frame (1) provided with a walking mechanism (2) capable of walking, the frame (1) being provided with a collecting mechanism, the collecting mechanism comprising two pieces of left-right symmetrical collecting assemblies (3), each of the collecting assemblies (3) comprising a first conveying belt (31), a second conveying belt (32) and a third conveying belt (33) provided on the frame (1), the third conveying belt (33) being located outside the second conveying belt (32), the second conveying belt (32) and the third conveying belt (33) being capable of contacting both sides of the tobacco leaf and conveying the tobacco leaf upwards, the lower part of the third conveying belt (33) being capable of contacting the tobacco leaf from the first conveying belt (31) before the lower part of the second conveying belt (32), the first conveying belt (31) being capable of receiving the falling tobacco leaf and conveying the tobacco leaf to the space between the second conveying belt (32) and the third conveying belt (33), the upper part of the third conveying belt (33) being located below the upper part of the second conveying belt (32), the frame (1) being provided with a top-opened collecting box (34), the collecting box (34) being located outside the third conveying belt (33), the distance between the two second conveying belts (32) in the two collecting assemblies (3) gradually increasing from bottom to top, and the distance between the two third conveying belts (33) in the two collecting assemblies (3) gradually increasing from bottom to top.

2. The tobacco output collection mechanism of claim 1, wherein: The frame (1) is provided with two brush assemblies (4), each of the brush assemblies (4) comprising a brush holder (41) provided with a rotatable brush rod (42) having brush hairs, the brush rods (42) in the two brush assemblies (4) being located between the two first conveying belts (31), the brush holder (41) being provided with a transmission assembly (43) capable of transmitting power of the first conveying belt (31) to the brush rod (42).

3. The tobacco output collection mechanism of claim 2, wherein: The brush rod (42) is capable of approaching and moving away from the first conveying belt (31).

4. The tobacco output collection mechanism of claim 3, wherein: Each brush rod (42) is connected to the rack (1) through two brush holders (41), the brush holder (41) comprises a first connecting rod (411) and a second connecting rod (412), the first connecting rod (411) comprises a horizontal flat portion (4111) and a vertical flat portion (4112), the vertical flat portion (4112) is located inside the horizontal flat portion (4111) and extends downward, the first conveying belt (31) comprises two belt rollers rotatably connected to the rack (1) and a conveying belt sleeved on the two belt rollers, the two belt rollers are arranged in an up-down manner, and any one of the two belt rollers is driven to rotate by an external power device, the horizontal flat portion (4111) is rotatably connected to the lower belt roller of the first conveying belt (31), the brush rod (42) is rotatably connected to the inner side of the horizontal flat portion (4111) of the first connecting rod (411) of the two brush holders (41) opposite to each other, the transmission assembly (43) comprises two belt pulleys (431) and a transmission belt (432) sleeved on the two belt pulleys (431), the two belt pulleys (431) are arranged on the brush rod (42) and the lower belt roller of the first conveying belt (31) respectively, the second connecting rod (412) is hinged to the rack (1) at the outer end, the second connecting rod (412) is provided with a long strip-shaped sliding groove (4121), the lower part of the vertical flat portion (4112) can move in the sliding groove (4121), and the rack (1) is hinged to a power cylinder (5) with an output end capable of reciprocating linear motion, and the output end of the power cylinder (5) is hinged to the first connecting rod (411).

5. A tobacco output collection mechanism according to any one of claims 1 to 4, characterised in that: The distance between the two first conveying belts (31) gradually increases from bottom to top, and the first conveying belt (31) is arranged in an upward inclination from inside to outside.

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