Tobacco leaf spiral picking mechanism and tobacco leaf spiral picking device

Abstract

The invention discloses a spiral tobacco leaf picking mechanism and a spiral tobacco leaf picking device.The spiral tobacco leaf picking mechanism comprises a front spiral tooth and a rear spiral tooth which are located in the middle, and the front spiral tooth comprises a cylindrical front spiral tooth body and 2-6 front picking pieces which are evenly and longitudinally arranged on the circumference of the front spiral tooth body in a cross shape; the outer surface of the front picking piece is in a wave shape, and a front connecting rod is arranged at the end of the outer side of a front spiral tooth body. The rear spiral tooth comprises a cylindrical rear spiral tooth body and a rear picking rack spirally wound on the circumferential surface of the rear spiral tooth body, the outer surface of the rear picking rack is arranged to be in a gear shape, and a rear connecting rod is arranged at the end of the outer side of the rear spiral tooth body. The spiral tobacco leaf picking mechanism has the advantages that tobacco leaves on the front side and the rear side and tobacco leaves on the left side and the right side can be separated and picked step by step, the picking efficiency is high, the picking effect is good, time and labor are saved, and the labor intensity of tobacco planters is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco leaf picking machinery, and in particular to a tobacco leaf spiral picking mechanism and a tobacco leaf spiral picking device. Background Art

[0002] Picking is a crucial link in tobacco production. In recent years, the number of tobacco producers has decreased significantly, making it difficult to ensure the timeliness of harvesting. Tobacco leaves cannot be harvested in time, and the best harvesting period is easily missed, which seriously affects the quality of tobacco leaves. At present, although there are some picking machines to choose from, since there are tobacco leaves in the front, back, left and right directions of tobacco, the existing picking mechanism needs to pick tobacco leaves in the four directions at the same time, and the existing structure cannot pick tobacco leaves in the four directions at the same time. It is often difficult to pick tobacco leaves in the front and back directions or left and right directions due to structural reasons, which easily causes incomplete picking of tobacco leaves, and it is necessary to manually pick the missed tobacco leaves, which affects the picking efficiency of tobacco leaves. Summary of the invention

[0003] The purpose of the present invention is to provide a tobacco spiral picking mechanism and a tobacco spiral picking device which saves time and labor, reduces the labor intensity of tobacco growers and can pick tobacco leaves in four directions of front, back, left and right of tobacco plants.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A tobacco spiral picking mechanism, comprising a front spiral tooth and a rear spiral tooth located in the middle, wherein the front spiral tooth comprises a cylindrical front spiral tooth body and 2-6 front picking pieces uniformly and longitudinally arranged in a cross shape on the circumference of the front spiral tooth body, the outer surface of the front picking pieces is arranged in a wavy shape, and a front connecting rod is arranged at the outer end of the front spiral tooth body; the rear spiral tooth comprises a cylindrical rear spiral tooth body and a rear picking rack spirally wound on the circumferential surface of the rear spiral tooth body, the outer surface of the rear picking rack is arranged in a gear shape, and a rear connecting rod is arranged at the outer end of the rear spiral tooth body.

[0006] In order to better achieve the above purpose, the present invention further provides the following technical solutions:

[0007] The tooth spacing of the front picking piece is 4-8 cm; the helix angle of the rear picking rack is 15°-30°.

[0008] In order to better achieve the above purpose, the present invention further provides the following technical solutions:

[0009] A tobacco spiral picking device including the above tobacco spiral picking mechanism, wherein the device comprises a frame cross beam, a front support arm and a rear support arm are arranged at the front and rear ends of the frame cross beam, the lower end of the rear support arm is connected to a rear chain transmission box, the outer side of the rear chain transmission box is connected to a servo motor through a reducer, the lower end of the front support arm is connected to a bearing seat support plate, and uniformly arranged rollers are connected between the rear chain transmission box and the bearing seat support plate through a bearing seat;

[0010] The rear chain transmission box is connected to a transmission shaft via a chain, and the front end of the transmission shaft is connected to the rear connecting rod of the tobacco spiral picking mechanism via a universal coupling;

[0011] The front connecting rod of the tobacco spiral picking mechanism is connected to the front end of the frame crossbeam through a suspended ball bearing, an L-shaped picking mechanism height adjustment rod and an adjustment rod locking device.

[0012] The above technical solution may further include the following technical solutions:

[0013] A transmission shaft support seat is arranged above the rear chain transmission box.

[0014] The above technical solution may further include the following technical solutions:

[0015] A baffle located above the tobacco spiral picking mechanism is connected above the transmission shaft support seat through a baffle support rod, and the lower front end of the baffle is connected to the picking mechanism height adjustment rod.

[0016] The above technical solution may further include the following technical solutions:

[0017] The adjusting rod locking device comprises a U-shaped connecting plate sleeved on the outside of the frame cross beam and the outside of the picking mechanism height adjusting rod, and a fastening bolt is threadedly connected on the vertical side wall of the U-shaped connecting plate.

[0018] In summary, the advantages of the present invention are as follows: when in use, the spiral tobacco leaf picking mechanism of the present invention is symmetrically arranged on both sides of the tobacco plant to be picked, and the leaf bases of the tobacco leaves on the left and right sides of the tobacco plant are impacted by the rotation of the front picking blade, so that the petioles of the tobacco leaves on the left and right sides are separated from the tobacco plant, thereby picking the tobacco leaves on the left and right sides of the tobacco plant; the rear picking rack is engaged with the petioles of the tobacco leaves on the front and rear sides, and a torsional force is applied to the petioles of the tobacco leaves on the front and rear sides, so that the petioles of the tobacco leaves on the front and rear sides are separated from the tobacco plant, thereby picking the tobacco leaves on the front and rear sides; the present invention The tobacco leaf spiral picking device is symmetrically arranged on both sides of the tobacco plant that needs to be picked when in use. First, the tobacco leaves on the left and right sides are picked by the front picking pieces, and then the tobacco leaves on the front and back sides are picked by the rear picking racks to complete the picking of tobacco leaves within a fixed height. After picking, the tobacco leaves fall onto the horizontal conveying rollers, and the tobacco leaves are transferred to the lifting system. The tobacco leaf spiral picking mechanism and the tobacco leaf spiral picking device of the present invention separate the tobacco leaves on the front and back sides and the tobacco leaves on the left and right sides and pick them in steps, with high picking efficiency, saving time and effort, and greatly reducing the labor intensity of tobacco growers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a spiral tobacco picking mechanism according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the tobacco spiral picking device according to Example 2 of the present invention.

[0021] Figure ID:

[0022] 1. Servo motor; 2. Speed ​​reducer; 3. Rear chain transmission box; 4. Bearing seat; 5 Transmission shaft; 6. Universal coupling; 7. Rear helical gear; 8. Roller; 9. Front helical gear; 10 Bearing seat support plate; 11. Front support arm; 12. Suspension ball bearing; 13. Baffle; 14. Height adjustment rod of picking mechanism; 15. Adjustment rod locking device; 16. Frame crossbeam; 17. Rear support arm; 18. Baffle support rod; 19. Transmission shaft support seat; 20. Rear connecting rod; 21. Front connecting rod; 71. Rear helical gear body; 72. Rear picking rack; 91. Front helical gear body; 92. Front picking piece. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] like Figure 1As shown, embodiment 1 of the present invention discloses a tobacco leaf spiral picking mechanism, which includes a front spiral tooth 9 and a rear spiral tooth 7 located in the middle, the front spiral tooth 9 includes a cylindrical front spiral tooth body 91 and four front picking pieces 92 uniformly and longitudinally arranged on the circumference of the front spiral tooth body 91 in a cross shape, the outer surface of the front picking piece 92 is set to a wave shape, and the outer end of the front spiral tooth body 91 is provided with a front connecting rod 21; the rear spiral tooth 7 includes a cylindrical rear spiral tooth body 71 and a rear picking rack 72 spirally wound on the circumferential surface of the rear spiral tooth body 71, the outer surface of the rear picking rack 72 is set to a gear type, and the outer end of the rear spiral tooth body 71 is provided with a rear connecting rod 20. The tooth spacing of the front picking piece 92 is 5cm; the helix angle of the rear picking rack is 20°.

[0026] Embodiment 2:

[0027] like Figure 2 As shown, embodiment 2 of the present invention discloses a tobacco spiral picking device including the tobacco spiral picking mechanism of embodiment 1, wherein the frame cross beam 16 is provided with a front support arm 11 and a rear support arm 17 at the front and rear ends of the frame cross beam 16, the lower end of the rear support arm 17 is connected to a rear chain transmission box 3, the outer side of the rear chain transmission box 3 is connected to a servo motor 1 through a reducer 2, the lower end of the front support arm 11 is connected to a bearing seat support plate 10, and uniformly arranged rollers 8 are connected between the rear chain transmission box 3 and the bearing seat support plate 10 through a bearing seat 4;

[0028] The rear chain transmission box 3 is connected to a transmission shaft 5 through a chain, and the front end of the transmission shaft 5 is connected to a rear connecting rod 20 of the tobacco leaf spiral picking mechanism through a universal coupling 6;

[0029] The front connecting rod 21 of the tobacco leaf spiral picking mechanism is connected to the front end of the frame cross beam 16 through a suspended ball bearing 12, an L-shaped picking mechanism height adjustment rod 14 and an adjustment rod locking device 15.

[0030] A transmission shaft support seat 19 is arranged above the rear chain transmission box 3 .

[0031] A baffle 13 located above the tobacco spiral picking mechanism is connected to the top of the transmission shaft support seat 19 through a baffle support rod 18, and the lower front end of the baffle 13 is connected to the picking mechanism height adjustment rod 14.

[0032] The adjusting rod locking device 15 comprises a U-shaped connecting plate sleeved on the outside of the frame cross beam 16 and the outside of the picking mechanism height adjusting rod 14, and a fastening bolt is threadedly connected on the vertical side wall of the U-shaped connecting plate.

[0033] Working principle:

[0034] The tobacco leaf spiral picking device of the present invention is symmetrically arranged on the tobacco picking machine. When picking tobacco leaves, the tobacco leaf spiral picking device of the present invention is located on both sides of the tobacco plant to be picked. The rotation speed of the tobacco leaf spiral picking device maintains a suitable fixed rotation speed ratio with the travel speed of the tobacco picking machine to avoid the front picking blade 92 and the rear picking rack 72 from disturbing the tobacco plant. First, the leaf bases of the tobacco leaves on the left and right sides of the tobacco plant are impacted by the rotation of the front picking blade 92, so that the petioles of the tobacco leaves on the left and right sides are separated from the tobacco plant, thereby picking the tobacco leaves on the left and right sides of the tobacco plant; then, the petioles of the tobacco leaves on the front and rear sides are meshed with the rear picking rack 72 to exert pressure on the petioles of the tobacco leaves on the front and rear sides. The torsional force is added to separate the petioles of the tobacco leaves on the front and rear sides from the tobacco plants, so that the tobacco leaves on the front and rear sides are picked; thereby, the picking of tobacco leaves in the front, rear, left and right directions within a fixed height is completed, and the tobacco leaves in the front, rear, left and right directions are separated and picked in steps. After picking, the tobacco leaves fall onto the horizontal conveying roller 8, and the tobacco leaves are transferred to the lifting system; the tobacco leaf spiral picking mechanism and the tobacco leaf spiral picking device of the present invention separate the tobacco leaves on the front and rear sides and the tobacco leaves on the left and right sides, and pick them in steps, overcoming the defect that the traditional picking mechanism has a single structure and cannot well pick the tobacco leaves in the front, rear, left and right directions, has high picking efficiency, saves time and effort, and greatly reduces the labor intensity of tobacco growers.

Claims

1. A tobacco leaf spiral picking mechanism, characterized in that: It includes a front spiral tooth and a rear spiral tooth located in the middle, the front spiral tooth includes a cylindrical front spiral tooth body and 2-6 front picking pieces uniformly and longitudinally arranged on the circumference of the front spiral tooth body in a cross shape, the outer surface of the front picking piece is set to a wave shape, and a front connecting rod is set at the outer end of the front spiral tooth body; the rear spiral tooth includes a cylindrical rear spiral tooth body and a rear picking rack spirally wound on the circumferential surface of the rear spiral tooth body, the outer surface of the rear picking rack is set to a gear type, and a rear connecting rod is set at the outer end of the rear spiral tooth body.

2. The tobacco spiral picking device according to claim 1, characterized in that: The tooth spacing of the front picking piece is 4-8 cm; the helix angle of the rear picking rack is 15°-30°.

3. A tobacco spiral picking device comprising the tobacco spiral picking mechanism according to claim 1 or 2, characterized in that: The machine comprises a frame cross beam, a front support arm and a rear support arm are arranged at the front and rear ends of the frame cross beam, the lower end of the rear support arm is connected to a rear chain transmission box, the outer side of the rear chain transmission box is connected to a servo motor through a reducer, the lower end of the front support arm is connected to a bearing seat support plate, and rollers arranged evenly are connected between the rear chain transmission box and the bearing seat support plate through a bearing seat; The rear chain transmission box is connected to a transmission shaft via a chain, and the front end of the transmission shaft is connected to the rear connecting rod of the tobacco spiral picking mechanism via a universal coupling; The front connecting rod of the tobacco spiral picking mechanism is connected to the front end of the frame crossbeam through a suspended ball bearing, an L-shaped picking mechanism height adjustment rod and an adjustment rod locking device.

4. The tobacco spiral picking device according to claim 3, characterized in that: A transmission shaft support seat is arranged above the rear chain transmission box.

5. The tobacco spiral picking device according to claim 3 or 4, characterized in that: A baffle located above the tobacco spiral picking mechanism is connected above the transmission shaft support seat through a baffle support rod, and the lower front end of the baffle is connected to the picking mechanism height adjustment rod.

6. The tobacco spiral picking device according to any one of claims 3 to 5, characterized in that: The adjusting rod locking device comprises a U-shaped connecting plate sleeved on the outside of the frame cross beam and the outside of the picking mechanism height adjusting rod, and a fastening bolt is threadedly connected on the vertical side wall of the U-shaped connecting plate.

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