Tobacco leaf spiral picking mechanism and tobacco leaf spiral picking device

Abstract

The utility model 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 the spiral tobacco leaf picking mechanism can separate tobacco leaves on the front side, the rear side, the left side and the right side, step-by-step picking is achieved, 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 utility model relates to tobacco leaf picking mechanical technical field, concretely relates to a tobacco leaf spiral picking mechanism and tobacco leaf spiral picking device. BACKGROUND

[0002] Picking is a vital link in tobacco production, and most of the tobacco planting areas in China still adopt manual harvesting, which is high in labor intensity and low in efficiency. In recent years, the aging of tobacco farmers is becoming increasingly serious, and the number of people engaged in tobacco production has decreased significantly, which has seriously restricted the development of the tobacco industry. During the peak harvesting season, there is often no available labor, and the shortage of labor and the substantial increase in harvesting costs make it difficult to ensure the timeliness of harvesting. If tobacco leaves cannot be harvested in time, the best harvesting period will be missed, which will seriously affect the quality of tobacco leaves and cause certain economic losses. At present, although some picking machines can be selected, the existing picking mechanism needs to pick tobacco leaves in four directions at the same time, but the existing structure cannot pick tobacco leaves in four directions at the same time, and often causes difficulty in picking tobacco leaves in front-back or left-right directions due to structural reasons, which easily leads to incomplete picking of tobacco leaves and the need for manual picking of missed tobacco leaves, thereby affecting the picking efficiency of tobacco leaves. SUMMARY

[0003] The utility model aims at providing a tobacco leaf spiral picking mechanism and a tobacco leaf spiral picking device which can save time and labor, reduce the labor intensity of tobacco growers, and pick tobacco leaves in front, back, left and right directions.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A tobacco leaf spiral picking mechanism, wherein a front spiral tooth and a rear spiral tooth are located in the middle, the front spiral tooth comprises a cylindrical front spiral tooth body and 2-6 front picking pieces which are uniformly arranged in a cross shape on the circumference of the front spiral tooth body in the longitudinal direction, the outer surface of the front picking piece is arranged in a wave shape, and the outer side end of the front spiral tooth body is provided with a front connecting rod; the rear spiral tooth comprises a cylindrical rear spiral tooth body and a rear picking rack which is 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 type, and the outer side end of the rear spiral tooth body is provided with a rear connecting rod.

[0006] To better achieve the above-mentioned purpose, the utility model further provides the following technical scheme:

[0007] The tooth spacing of the front picking piece is 4-9 cm; and the helical pitch angle of the rear picking rack is 15°-25°.

[0008] In order to better achieve the above purpose, the utility model further provides the following technical scheme:

[0009] A tobacco spiral picking device comprising the tobacco spiral picking mechanism, wherein a rack beam is provided with a front supporting arm and a rear supporting arm at its front and rear ends, a rear chain transmission box is connected to the lower end of the rear supporting arm, a servo motor is connected to the outer side of the rear chain transmission box through a speed reducer, a bearing seat supporting plate is connected to the lower end of the front supporting arm, and a plurality of evenly arranged rollers are connected between the rear chain transmission box and the bearing seat supporting plate through a bearing seat.

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

[0011] The front connecting rod of the tobacco spiral picking mechanism is connected with the front end of the rack beam through a suspension type ball bearing, an L-shaped picking mechanism height adjusting rod and an adjusting rod locking device.

[0012] The above technical scheme can further include the following technical scheme:

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

[0014] The above technical scheme can further include the following technical scheme:

[0015] A baffle is connected to the upper side of the transmission shaft supporting seat through a baffle supporting rod, and the front end of the baffle is connected with the picking mechanism height adjusting rod.

[0016] The above technical scheme can further include the following technical scheme:

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

[0018] In summary, the tobacco leaf spiral picking mechanism has the advantages that: the tobacco leaf spiral picking mechanism is symmetrically arranged at two sides of tobacco plants to be picked, the base of tobacco leaves on the left and right sides of the tobacco plants is impacted by the rotation of the front picking piece, the stalks of the tobacco leaves on the left and right sides are separated from the tobacco plants, and the tobacco leaves on the left and right sides of the tobacco plants are picked; the stalks of the tobacco leaves on the front and rear sides are engaged with the rear picking rack, and the stalks of the tobacco leaves on the front and rear sides are twisted, the stalks of the tobacco leaves on the front and rear sides are separated from the tobacco plants, and the tobacco leaves on the front and rear sides are picked; the tobacco leaf spiral picking device is symmetrically arranged at two sides of tobacco plants to be picked, the tobacco leaves on the left and right sides are picked by the front picking piece, the tobacco leaves on the front and rear sides are picked by the rear picking rack, the tobacco leaves in the fixed height are picked, and the picked tobacco leaves fall on the horizontal conveying roller, and the tobacco leaves are transmitted to the lifting system; the tobacco leaf spiral picking mechanism and the tobacco leaf spiral picking device separate and pick the tobacco leaves on the front and rear sides and the tobacco leaves on the left and right sides, the picking efficiency is high, time and labor are saved, and the labor intensity of tobacco planters is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the tobacco leaf spiral picking mechanism of the utility model embodiment 1.

[0020] Figure 2 It is a three-dimensional schematic view of the tobacco leaf spiral picking device of the utility model embodiment 2.

[0021] IDENTIFICATION OF DRAWINGS:

[0022] 1, servo motor; 2, reduction box; 3, rear chain transmission box; 4, bearing seat; 5 transmission shaft; 6, universal coupling; 7, rear spiral tooth; 8, roller; 9, front spiral tooth; 10 bearing seat support plate; 11, front support arm; 12, suspension type ball bearing; 13, baffle; 14, picking mechanism height adjusting rod; 15, adjusting rod locking device; 16, rack cross beam; 17, rear support arm; 18, baffle support rod; 19, transmission shaft support seat; 20, rear connecting rod; 21, front connecting rod; 71, rear spiral tooth body; 72, rear picking rack; 91, front spiral tooth body; 92, front picking piece. DETAILED DESCRIPTION

[0023] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment 1:

[0025] AsFigure 1 As shown in the utility model embodiment 1 discloses a tobacco spiral picking mechanism, wherein, including the front spiral tooth 9 and rear spiral tooth 7 at middle part, the front spiral tooth 9 includes cylindrical front spiral tooth body 91 and four pieces of front picking piece 92 that are evenly arranged in the circumference of front spiral tooth body 91 in cross shape, the outer surface of front picking piece 92 is set as wave shape, and the outside end of front spiral tooth body 91 is provided with front connecting rod 21;The rear spiral tooth 7 includes cylindrical rear spiral tooth body 71 and rear picking rack 72 that are spirally wound on the circumferential surface of rear spiral tooth body 71, and the outer surface of rear picking rack 72 is set as gear type, and the outside end of rear spiral tooth body 71 is provided with rear connecting rod 20.The tooth spacing of front picking piece 92 is 6cm;The spiral angle of rear picking rack is 20 °.

[0026] Embodiment 2:

[0027] As Figure 2 shown in the utility model embodiment 2 discloses a tobacco spiral picking device comprising the tobacco spiral picking mechanism of embodiment 1, wherein, including rack beam 16, the front and rear ends of rack beam 16 are provided with front support arm 11 and rear support arm 17, the lower end of rear support arm 17 is connected with rear chain transmission box 3, the outside of rear chain transmission box 3 is connected with servo motor 1 through speed reducer 2, the lower end of front support arm 11 is connected with bearing seat support plate 10, and the even arrangement of drum 8 is connected between rear chain transmission box 3 and bearing seat support plate 10 through bearing seat 4.

[0028] Rear chain transmission box 3 is connected with transmission shaft 5 through chain, and the front end of transmission shaft 5 is connected with the rear connecting rod 20 of tobacco spiral picking mechanism through universal coupling 6.

[0029] The front connecting rod 21 of tobacco spiral picking mechanism is connected with the front end of rack beam 16 through suspension type ball bearing 12, L-shaped picking mechanism height adjusting rod 14 and adjusting rod locking device 15.

[0030] The upper side of rear chain transmission box 3 is provided with transmission shaft support seat 19.

[0031] The upper side of transmission shaft support seat 19 is connected with baffle 13 located above tobacco spiral picking mechanism through baffle support rod 18, and the front end of baffle 13 is connected with picking mechanism height adjusting rod 14.

[0032] Adjusting rod locking device 15 includes U-shaped connecting plate that is sleeved on the outside of rack beam 16 and the outside of picking mechanism height adjusting rod 14, and fastening bolt is threadedly connected on the vertical side wall of U-shaped connecting plate.

[0033] Working principle:

[0034] The tobacco leaf spiral picking device is symmetrically arranged on the tobacco picking machine, when picking tobacco leaves, the tobacco leaf spiral picking device is located at both sides of the tobacco plant to be picked, the rotating speed of the tobacco leaf spiral picking device and the advancing speed of the tobacco picking machine maintain a proper fixed rotating speed ratio, disturbance of the front picking piece 92 and the rear picking rack 72 to the tobacco plant is avoided, firstly, the rotation of the front picking piece 92 impacts the leaf base of the tobacco leaves on the left and right sides of the tobacco plant, the petiole of the tobacco leaves on the left and right sides is separated from the tobacco plant, and the tobacco leaves on the left and right sides of the tobacco plant are picked; then, the meshing of the rear picking rack 72 and the petiole of the tobacco leaves on the front and rear sides exerts a torsional force on the petiole of the tobacco leaves on the front and rear sides, the petiole of the tobacco leaves on the front and rear sides is separated from the tobacco plant, and the tobacco leaves on the front and rear sides are picked; thereby, the picking of the tobacco leaves in the front, rear, left and right directions in the fixed height is completed, the separation and step-by-step picking of the tobacco leaves in the front, rear, left and right directions are realized, the picked tobacco leaves fall on the horizontal conveying roller 8, and the tobacco leaves are transmitted to the lifting system; the tobacco leaf spiral picking mechanism and the tobacco leaf spiral picking device separate and step-by-step pick the tobacco leaves on the front and rear sides and the tobacco leaves on the left and right sides, 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 is overcome, the picking efficiency is high, time and labor are saved, and the labor intensity of tobacco planters is greatly reduced.

Claims

1. A tobacco leaf spiral harvesting mechanism, characterized in that, The device includes a front helical tooth and a rear helical tooth located in the middle. The front helical tooth includes a cylindrical front helical tooth body and 2-6 front picking pieces arranged longitudinally in a cross shape on the circumference of the front helical tooth body. The outer surface of the front picking pieces is wavy. A front connecting rod is provided at the outer end of the front helical tooth body. The rear helical tooth includes a cylindrical rear helical tooth body and a rear picking rack spirally wound around the circumferential surface of the rear helical tooth body. The outer surface of the rear picking rack is gear-shaped. A rear connecting rod is provided at the outer end of the rear helical tooth body.

2. The tobacco leaf spiral harvesting mechanism according to claim 1, characterized in that, The tooth spacing of the front picking blade is 4-9cm; the helix angle of the rear picking rack is 15°-25°.

3. A tobacco spiral harvesting device comprising the tobacco spiral harvesting mechanism as described in claim 1 or 2, characterized in that, The machine includes a frame beam, with a front support arm and a rear support arm at the front and rear ends of the frame beam. The lower end of the rear support arm is connected to a rear chain drive box, and a servo motor is connected to the outside of the rear chain drive box via a reducer. The lower end of the front support arm is connected to a bearing seat support plate, and a uniformly arranged roller is connected between the rear chain drive box and the bearing seat support plate via a bearing seat. The rear chain drive box is connected to a drive shaft via a chain, and the front end of the drive shaft is connected to the rear connecting rod of the tobacco leaf spiral harvesting mechanism via a universal coupling. The front connecting rod of the tobacco spiral harvesting mechanism is connected to the front end of the frame beam via a suspension ball bearing, an L-shaped harvesting mechanism height adjustment rod, and an adjustment rod locking device.

4. The tobacco leaf spiral harvesting device according to claim 3, characterized in that, A drive shaft support is provided above the rear chain drive box.

5. The tobacco leaf spiral harvesting device according to claim 3 or 4, characterized in that, Above the drive shaft support is a baffle located above the tobacco leaf spiral harvesting mechanism via a baffle support rod. The lower front end of the baffle is connected to the height adjustment rod of the harvesting mechanism.

6. The tobacco leaf spiral harvesting device according to claim 3, characterized in that, The adjusting rod locking device includes a U-shaped connecting plate sleeved on the outside of the frame crossbeam and the outside of the height adjusting rod of the picking mechanism, and fastening bolts are threaded onto the vertical side wall of the U-shaped connecting plate.

7. The tobacco leaf spiral harvesting device according to claim 4, characterized in that, The adjusting rod locking device includes a U-shaped connecting plate sleeved on the outside of the frame crossbeam and the outside of the height adjusting rod of the picking mechanism, and fastening bolts are threaded onto the vertical side wall of the U-shaped connecting plate.

8. The tobacco leaf spiral harvesting device according to claim 5, characterized in that, The adjusting rod locking device includes a U-shaped connecting plate sleeved on the outside of the frame crossbeam and the outside of the height adjusting rod of the picking mechanism, and fastening bolts are threaded onto the vertical side wall of the U-shaped connecting plate.

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