Encircling type flexible tobacco leaf picking mechanism

Abstract

A surrounding type flexible tobacco leaf picking mechanism comprises a pair of surrounding type flexible picking devices driven by the same motor, each surrounding type flexible picking device comprises a shell, two guide wheels and a driving wheel, the guide wheels are fixedly arranged on the inner surface of the shell, and the driving wheel is arranged on the shell in a sliding mode. The two guide wheels and the driving wheel of the same picker are arranged in a triangular shape, the guide wheels and the driving wheel are sleeved with the transmission chain, the flexible picking fingers are arranged on the outer side of the transmission chain, the driving wheel drives the transmission chain to drive the flexible picking fingers to move in a reciprocating mode, and the front end of a picking operation area of the surrounding type flexible picker is high, and the rear end of the picking operation area is low. The driving wheel end is higher than the front end of the picking operation area. The driving wheel is far away from the picking operation area to prevent tobacco winding; the same power source is used for driving, synchronism is good, tobacco leaves or tobacco plants are prevented from being hooked through motor suspension, and damage is reduced. The flexible picking fingers are small in contact area and cannot damage tobacco leaves.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco leaf picking equipment, and particularly relates to an annular flexible tobacco leaf picking mechanism. Background Technique

[0002] The existing wave - type tobacco leaf picking cutter picks tobacco leaves by continuously rotating and patting the tobacco leaves. The contact area with the tobacco leaves is large, resulting in a high breakage rate of the tobacco leaves. In addition, the rotation operation trajectory of the wave - type picking cutter is circular or elliptical, and it is not thorough in picking multiple tobacco leaves at different heights and different orientations on the same tobacco plant, and there will be omissions.

[0003] Based on the above situation, Chinese Patent with the publication number CN115669364 A discloses a tobacco leaf harvesting machine. The harvester includes two relatively arranged harvesting units, and a plant gap is reserved between the two harvesting units. The two harvesting units both include a harvesting frame. A transmission unit is arranged on the harvesting frame. The transmission unit is inclined downward from front to back, and the transmission unit circulates and drives along the circumferential direction of the harvesting frame. The two transmission units both include a transmission chain and a transmission motor. A guard plate is arranged above the transmission motor for protecting the transmission motor. The transmission motor drives the transmission chain to circulate and drive. Picking rods are evenly distributed on the transmission unit. The picking rods on the two harvesting units are arranged oppositely. As the transmission chain drives, the tobacco plant enters the picking frame formed by the picking rods. As the transmission chain drives, the picking frame folds the tobacco leaves on the tobacco plant from top to bottom, which not only realizes the layered picking of tobacco leaves, but also, during the process of picking the same tobacco plant, the picking rod can have only a vertical force on the tobacco plant, thus avoiding bending the tobacco plant and patting off the tobacco leaves vertically downward, with a low breakage rate and high harvesting efficiency. However, each transmission unit is provided with a motor, and a guard plate is arranged above the motor to protect the motor, the structure is relatively complex, it is easy to hook the tobacco leaves, and the synchronism of the two motors of the two transmission units is poor; and both ends of the harvesting frame are semi - circular, and the whole is arranged in a long strip shape. Since the transmission unit of the harvesting frame is inclined downward from front to back, it is easier to cause tobacco leaf accumulation and unsmooth conveying at the rear end of the harvesting frame, which is closer to the lower conveying roller. Summary of the Invention

[0004] Aiming at the problems of the complex transmission structure of the harvesting unit of the above - mentioned tobacco leaf picking machine, easy tobacco leaf accumulation and unsmooth conveying at the rear end of the harvesting frame, the utility model provides an annular flexible tobacco leaf picking mechanism, with a simple overall structure and not easy to accumulate tobacco leaves at the rear end of the picker near the conveying roller.

[0005] The purpose of the utility model is achieved in the following way: an embracing flexible tobacco leaf picking mechanism comprises a frame, a pair of embracing flexible pickers are arranged on the frame through a mounting rod, the pair of embracing flexible pickers are driven by the same motor, the motor is arranged on the frame through a bracket, each embracing flexible picker comprises a shell, two guide wheels and a driving wheel, the guide wheels are fixedly arranged on the inner surface of the shell, the driving wheel is slidably arranged on the shell, the two guide wheels and one driving wheel of the same picker are arranged in a triangle, and a transmission chain is arranged outside the guide wheel and the driving wheel. Flexible picking fingers are arranged on the outside of the transmission chain, and the driving wheel drives the transmission chain to drive the flexible picking fingers to reciprocate. The flexible picking fingers are convex in the middle, and the area corresponding to the transmission chain and the flexible picking fingers between the two guide wheels is the picking operation area. The driving wheel is far away from the picking operation area, and two adjacent flexible picking fingers on the same picker body are connected with two adjacent flexible picking fingers on another picker body arranged in pairs to form a picking frame, and the picking frame embraces the tobacco plants; the front end of the picking operation area of ​​the embracing flexible picker is high and the rear end is low, and the driving wheel end is higher than the front end of the picking operation area.

[0006] The front and rear end inclination angles of the picking operation area are 25°-40°.

[0007] The flexible picking finger transitions from the middle protrusion to the smooth arcs at both ends.

[0008] The motor output shaft is sleeved with a driving sprocket, which is chain-driven with a driven sprocket. The driven sprocket is fixedly sleeved in the middle of a synchronous rod. Both ends of the synchronous rod are connected to a transmission rod through a pair of bevel gears, and the transmission rod is connected to a driving wheel.

[0009] Flexible picking refers to materials such as rubber, silicone, plastic or resin.

[0010] The flexible picking finger is provided with a U-shaped clip on the side opposite to the middle protrusion, and is fixedly connected with the transmission chain through the U-shaped clip.

[0011] The driving wheel is slidably arranged on the shell through a tensioning mechanism. The tensioning mechanism comprises a mounting plate, a limiting block and a limiting rod. The driving wheel is fixedly arranged on the mounting plate. The mounting plate is connected to the limiting rod, and the limiting rod is clamped with the limiting block.

[0012] The mounting rod comprises a first mounting rod and a second mounting rod, and the first mounting rod and the second mounting rod are respectively located at two sides of the driving wheel.

[0013] A layered guide plate is arranged at the front end of the embracing flexible picker.

[0014] Two left and right groups of horizontal conveying mechanisms are arranged below the embracing flexible picker. A conveying guard plate is arranged at the rear end of each group of horizontal conveying mechanisms. A rotary paddle is installed on each conveying guard plate. The two paddle plates rotate in opposite directions and are in contact when rotating. The paddle plates are flexible plates or flexible finger plates.

[0015] Compared with the prior art, the encircling flexible picker disclosed in the utility model has a triangular structure, and the driving wheel is far away from the picking operation area to prevent the tobacco leaves from being entangled; the two encircling flexible pickers arranged in pairs are driven by the same power source, with good synchronization, and the driving motor is suspended on the frame, which effectively prevents the tobacco leaves or tobacco plants from being hooked and reduces damage. The contact area between the flexible picking fingers and the tobacco leaves is only the flexible picking finger part, and the contact area is small. The flexible picking fingers are convex in the middle, which makes them smoother when in contact with the tobacco leaves and will not damage the tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the utility model from another angle.

[0018] Figure 3 It is a connection diagram of the motor and the hugging flexible picker.

[0019] Figure 4 It is a structural schematic diagram of embracing flexible pickers arranged in pairs.

[0020] Figure 5 It is a schematic diagram of the internal structure of an embracing flexible picker.

[0021] Figure 6 It is a schematic diagram of the connection between the flexible picking fingers and the chain.

[0022] Figure 7 It is a structural schematic diagram of the flexible picking finger.

[0023] Figure 8 This is a schematic diagram of the installation of the dial plate.

[0024] In the figure, 1-embracing flexible picker, 2-guide wheel, 3-driving wheel, 4-transmission chain, 5-flexible picking finger, 51-U-shaped card, 6-layered guide plate, 7-tensioning mechanism, 71-mounting plate, 72-limiting block, 73-limiting rod, 8-picking frame, 9-mounting rod, 91-first mounting rod, 92-second mounting rod, 10-frame, 11-motor, 12-driving sprocket, 13-driven sprocket, 14-synchronizing rod, 15-transmission rod, 16-horizontal conveying mechanism, 17-conveying guard plate, 18-push plate. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present invention.

[0026] like Figure 1 , Figure 2 As shown, the encircling flexible tobacco leaf picking mechanism includes a frame 10, on which a pair of encircling flexible pickers 1 are arranged through a mounting rod 9, and the pair of encircling flexible pickers are driven by the same motor 11, which is arranged on the frame 10 through a bracket. Figure 5 As shown, each embracing flexible picker 1 includes a shell, two guide wheels 2 and a driving wheel 3. The guide wheel 2 is fixedly arranged on the inner surface of the shell, and the driving wheel 3 is slidably arranged on the shell. The two guide wheels 2 and the driving wheel 3 of the same picker 1 are arranged in a triangle. A transmission chain 4 is arranged outside the guide wheel 2 and the driving wheel 3. Flexible picking fingers 5 are arranged outside the transmission chain 4. The driving wheel drives the transmission chain 4 to drive the flexible picking fingers 5 to reciprocate. The flexible picking fingers 5 are convex in the middle and smoothly transition from the middle to the two ends. The area corresponding to the transmission chain 4 and the flexible picking fingers 5 between the two guide wheels 2 is the picking operation area, and the driving wheel 3 is far away from the picking operation area. Two adjacent flexible picking fingers 5 on the same picker body 1 are connected with two adjacent flexible picking fingers 5 on another picker body 1 arranged in pairs to form a picking frame 8, and the picking frame embraces the tobacco plants.

[0027] like Figure 4 As shown, when working, with the movement of the frame 10 and the transmission chain 4, when the embracing flexible picker 1 moves to the plant, the two opposite flexible picking fingers 5 on the two transmission chains 4 form a group, and together with the next group of flexible picking fingers 5, they surround the plant in the picking frame; with the transmission of the transmission chain 4, the two adjacent groups of flexible picking fingers 5 move downward relative to the plant, thereby folding the tobacco leaves and achieving the purpose of tobacco leaf picking.

[0028] The front end of the picking operation area of ​​the embracing flexible picker 1 is high, and the rear end is low, and the end of the driving wheel 3 is higher than the front end of the picking operation area, and the inclination angle of the front and rear ends of the picking operation area is preferably 25°-40°. The front end of the utility model refers to the end that first contacts the tobacco leaves when the picker moves forward, and the end that contacts the tobacco leaves later is the rear end.

[0029] Because the transmission chain 4 is driven obliquely downward, it can be decomposed into horizontal backward movement and vertical downward movement, wherein the vertical downward movement realizes the picking of tobacco leaves, and the horizontal backward movement is used to offset the horizontal movement of the frame 10, so that the flexible picking fingers 5 only move downward relative to the plants during the picking operation, and the plants will not be bent, which greatly improves the picking effect. In addition, the normal growth of the plants after picking is guaranteed, and more importantly: because the frame 10 will not be hindered by the bending force of the plants, the power consumption of the entire picking machine is also reduced.

[0030] like Figure 3As shown, the output shaft of the motor 11 is sleeved with a driving sprocket 12, and the driving sprocket 12 is chain-driven with a driven sprocket 13. The driven sprocket 13 is fixedly sleeved in the middle of a synchronization rod 14. Both ends of the synchronization rod 12 are connected to a transmission rod 15 through a pair of bevel gears, and the transmission rod 15 is connected to the driving wheel 3.

[0031] Furthermore, one of a pair of bevel gears is mounted on the synchronization rod 12, and the other is mounted on the bevel gear transmission shaft. A cross coupling is arranged between the bevel gear transmission shaft and the transmission rod 15. The arrangement of the cross coupling can make the embracing flexible picker adapt to the shaking of the frame.

[0032] like Figure 6 , Figure 7 As shown, the flexible picking finger 5 has a bulge in the middle, and a smooth arc transition from the middle to both ends makes the flexible picking finger 5 smoother and less frictional when in contact with the tobacco plant or tobacco leaves. A U-shaped clip 51 is provided on the side of the flexible picking finger 5 opposite to the bulge in the middle, and is fixedly connected to the transmission chain through the U-shaped clip 51. Furthermore, the material of the flexible picking finger 5 is preferably rubber, silicone, plastic or resin, which is softer than metal and causes less damage to tobacco leaves.

[0033] The driving wheel 3 is slidably set on the shell through a tensioning mechanism 7. There is a long hole on the shell, and the extension direction of the long hole is away from the two guide wheels. The tensioning mechanism 7 includes a mounting plate 71, a limit block 72 and a limit rod 73. The driving wheel 3 is fixedly set on the mounting plate 71, and the mounting plate 71 is connected to the limit rod 73. There is a limit block or a limit nut on the limit rod 73, which is clamped with the limit block 72. The position of the mounting plate 71 and the driving wheel 3 on the shell is adjusted by adjusting the limit rod 73, thereby realizing the tensioning of the transmission chain 4.

[0034] The mounting rod 9 includes a first mounting rod 91 and a second mounting rod 92, which are respectively located on both sides of the driving wheel 3. By adjusting the length of the first mounting rod 91 and the second mounting rod 92 extending on the frame 7, the inclination angle of the embracing flexible picker 1 can be adjusted.

[0035] In a further preferred embodiment, a stratified guide plate 6 is provided at the front end of the embracing flexible picker 1. The stratified guide plate 6 is used to stratify the tobacco leaves on the tobacco plants to be picked, and the tobacco leaves of the tobacco plants located above the stratified guide 6 are not picked, and the tobacco leaves below the stratified guide plate 6 are picked.

[0036] The embracing flexible picker disclosed in the utility model has a triangular structure, and the driving wheel is far away from the picking operation area to prevent the tobacco leaves from being entangled; the two embracing flexible pickers arranged in pairs are driven by the same power source, with good synchronization, and the driving motor is suspended on the frame, which effectively prevents the tobacco leaves or tobacco plants from being hooked and reduces damage. The contact area between the flexible picking fingers and the tobacco leaves is only the flexible picking finger part, and the contact area is small. The flexible picking fingers are convex in the middle, and the transition from the middle to the two ends is smooth and circular, so that they are smoother when in contact with the tobacco leaves and will not damage the tobacco leaves.

[0037] like Figure 8 As shown, further, two left and right groups of horizontal conveying mechanisms 16 are arranged below the embracing flexible picker 1, and a conveying guard plate 17 is arranged at the rear end of each group of horizontal conveying mechanisms 16. A rotary paddle 18 is installed on each conveying guard plate 17, and the two paddles 18 rotate in opposite directions and are in contact when rotating; the paddle 18 is a flexible plate or a flexible finger plate, and the material of the paddle 18 is rubber, silicone, resin or plastic.

[0038] The conveying directions of the two horizontal conveying mechanisms 16 are opposite, and the conveying direction of each group of horizontal conveying mechanisms 16 is toward the outside of the frame 10, so that the tobacco leaves dropped on the horizontal conveying mechanisms are conveyed to the outside of the frame 10. The rotation direction of each paddle 18 is the same as the conveying direction of the horizontal conveying mechanism 16 below it, and is also toward the outside of the frame 10, so that the tobacco leaves on the horizontal conveying mechanism are pushed to the outside of the frame 10.

[0039] The horizontal conveying mechanism 16 can be a conveying roller set or a conveying belt.

[0040] A paddle 18 is installed on the conveying guard plate 17. The two groups of paddle plates 18 rotate in opposite directions to push the tobacco leaves stuck between the left and right groups of horizontal conveying mechanisms and the tobacco leaves piled up in front of the conveying guard plate 17 to the horizontal conveying mechanisms 16 on both sides to prevent tobacco jams and accumulation. In addition, the two paddle plates 18 can also pat and pick a small amount of missed tobacco leaves, thereby achieving the function of assisting picking.

[0041] For other technical details not described in detail, please refer to the Chinese patent publication number CN115669364 A and the prior art.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that, for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. An embracing flexible tobacco leaf picking mechanism, characterized in that: The invention comprises a frame (10), a pair of embracing flexible pickers (1) are arranged on the frame (10) via a mounting rod (9), the pair of embracing flexible pickers are driven by a same motor (11), the motor (11) is arranged on the frame (10) via a bracket, each embracing flexible picker (1) comprises a shell, two guide wheels (2) and a driving wheel (3), the guide wheels (2) are fixedly arranged on the inner surface of the shell, the driving wheel (3) is slidably arranged on the shell, the two guide wheels (2) and the driving wheel (3) of the same picker (1) are arranged in a triangle, a transmission chain (4) is arranged outside the guide wheel (2) and the driving wheel (3), and a flexible picker is arranged outside the transmission chain (4). The picking finger (5) is driven by a driving wheel to drive a transmission chain (4) to drive the flexible picking finger (5) to reciprocate. The flexible picking finger (5) is convex in the middle. The area corresponding to the transmission chain (4) and the flexible picking finger (5) between the two guide wheels (2) is a picking operation area. The driving wheel (3) is far away from the picking operation area. Two adjacent flexible picking fingers (5) on the body of the same embracing flexible picking device (1) are connected with two adjacent flexible picking fingers (5) on the body of another embracing flexible picking device (1) arranged in pair to form a picking frame. The picking frame embraces the tobacco plants. The front end of the picking operation area of ​​the embracing flexible picking device (1) is high and the rear end is low, and the end of the driving wheel (3) is higher than the front end of the picking operation area.

2. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: The front and rear end inclination angles of the picking operation area are 25°-40°.

3. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: The flexible picking fingers (5) transition from a middle protrusion to smooth arcs at both ends.

4. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: The output shaft of the motor (11) is sleeved with a driving sprocket (12), the driving sprocket (12) and a driven sprocket (13) are chain-driven, the driven sprocket (13) is fixedly sleeved in the middle of a synchronization rod (14), the two ends of the synchronization rod (14) are respectively connected to a transmission rod (15) through a pair of bevel gears, and the transmission rod (15) is connected to a driving wheel (3).

5. The embracing flexible tobacco leaf picking mechanism according to claim 1 is characterized in that: Flexible picking fingers (5) are made of rubber, silicone, plastic or resin.

6. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: A U-shaped clip (51) is provided on the side of the flexible picking finger (5) opposite to the middle protrusion and is fixedly connected to the transmission chain via the U-shaped clip (51).

7. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: The driving wheel (3) is slidably arranged on the housing via a tensioning mechanism (7); the tensioning mechanism (7) comprises a mounting plate (71), a limiting block (72) and a limiting rod (73); the driving wheel (3) is fixedly arranged on the mounting plate (71); the mounting plate (71) is connected to the limiting rod (73); and the limiting rod (73) is clamped with the limiting block (72).

8. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: The mounting rod (9) comprises a first mounting rod (91) and a second mounting rod (92), and the first mounting rod (91) and the second mounting rod (92) are respectively located on both sides of the driving wheel (3).

9. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: A layered guide plate (6) is provided at the front end of the embracing flexible picker (1).

10. The embracing flexible tobacco leaf picking mechanism according to claim 1, characterized in that: Two left and right groups of horizontal conveying mechanisms (16) are arranged below the embracing flexible picker (1), a conveying guard plate (17) is arranged at the rear end of each group of horizontal conveying mechanisms (16), a rotary paddle plate (18) is mounted on each conveying guard plate (17), the two paddle plates (18) rotate in opposite directions and are in contact with each other during rotation, and the paddle plates (18) are flexible plates or flexible finger plates.

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