Tobacco leaf harvesting device

Abstract

The utility model discloses a tobacco leaf harvesting device which comprises a harvesting frame, moving wheels are arranged at the bottom of the harvesting frame, a pushing handle is arranged on the rear side of the harvesting frame, a supporting plate is arranged on the front side of the harvesting frame, a fixing transverse rod is arranged on the supporting plate, the two ends of the fixing transverse rod extend out of the outer side of the harvesting frame, and side plates are rotationally arranged at the two ends of the fixing transverse rod. A plurality of cutter shafts are arranged on the outer side walls of the side plates at intervals and rotate synchronously, blades are arranged on the cutter shafts, air cylinder bases are arranged on the two sides of the harvesting frame, air cylinders are rotationally arranged on the air cylinder bases, the push-out ends of the air cylinders are connected with the side plates through connecting rods, shaft covers are arranged on the supporting plates, distance adjusting rotating shafts are arranged in the shaft covers in a penetrating mode, and the distance adjusting rotating shafts are arranged on the distance adjusting rotating shafts. A first motor for driving the distance adjusting rotating shaft to rotate is arranged on the outer side of the shaft cover; the tobacco leaf harvesting height can be conveniently adjusted, and the tobacco leaf harvesting device can be well attached to tobacco plants, so that the harvesting effect and the harvesting efficiency are improved, and the problems pointed out in the background technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco leaf picking, in particular to a tobacco leaf picking device. Background Art

[0002] Tobacco is one of the important economic crops. In recent years, the scale of tobacco cultivation has become larger and larger. With the continuous development of agricultural machinery, harvesters are also used in the process of tobacco leaf harvesting. However, the existing harvesters are large in size, complex in structure, and their cost is also high.

[0003] The utility model with publication number CN207201358U records a tobacco leaf harvesting mechanism, which includes a bracket, a dial mechanism and a harvesting mechanism. The bracket is provided with a support rod and a collection box, and the support rod is located above the collection box. The device can improve the efficiency of harvesting, but the device also has usage defects. The knife disc 33 can only cut on the horizontal plane, and the tobacco leaf stems are unevenly distributed in height. Therefore, the cutting effect is poor and the stems of the tobacco plants may even be cut off. In addition, the planting positions of the tobacco plants are not in a straight line, and the knife disc 33 cannot be close to the tobacco plants for harvesting. In order to overcome this technical problem, the utility model provides a tobacco leaf harvesting device. Utility Model Content

[0004] The purpose of the utility model is to provide a tobacco leaf harvesting device, which is convenient for adjusting the tobacco leaf harvesting height and can better fit the tobacco plants, thereby improving the harvesting effect and harvesting efficiency, thereby overcoming the problems pointed out in the background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A tobacco leaf harvesting device comprises a harvesting frame, a moving wheel is arranged at the bottom of the harvesting frame and a push handle is arranged at the rear side of the harvesting frame, a support plate is arranged at the front side of the harvesting frame, a fixed cross bar is arranged on the support plate, two ends of the fixed cross bar extend out of the outside of the harvesting frame, side plates are rotatably arranged at both ends of the fixed cross bar, a plurality of knife shafts are arranged at intervals on the outer side walls of the side plates, the plurality of knife shafts rotate synchronously and blades are arranged on the knife shafts, cylinder bases are arranged on both sides of the harvesting frame, a cylinder is rotatably arranged on the cylinder base, a push-out end of the cylinder is connected to the side plate through a connecting rod, a shaft cover is arranged on the support plate, a pitch-adjusting shaft is arranged in the shaft cover, and a first motor for driving the pitch-adjusting shaft to rotate is arranged on the outside of the shaft cover;

[0007] The adjustable pitch shaft includes a smooth section and a threaded section, the threaded sections are located on both sides of the smooth section and the thread directions of the two threaded sections are opposite, the smooth section is located in the shaft cover, and the threaded section is located outside the shaft cover, first limiting rings are provided at both ends of the threaded section and an adjustment sleeve is threadedly connected to the threaded section, a groove structure is provided on the outside of the adjustment sleeve, and the end of the side plate is clamped in the groove structure.

[0008] Furthermore, the knife shaft passes through the side plate and is provided with a double-sided pulley at the end of the knife shaft. Two adjacent double-sided pulleys are connected by a belt. A cover shell for covering the double-sided pulleys is also provided on the inner side of the side plate. A second motor is provided on the cover shell, and the output end of the second motor passes through the cover shell and is connected to one of the double-sided pulleys.

[0009] Furthermore, two second limiting rings are provided at both ends of the fixed cross bar, the second limiting rings are located outside the harvesting frame and the side plate is located between the two second limiting rings.

[0010] Furthermore, the output end of the first motor passes through the shaft cover and is provided with a driving conical tooth at the output end, and a driven conical tooth is provided at the smooth section, and the driving conical tooth and the driven conical tooth are meshed with each other.

[0011] Furthermore, anti-deflection rods are arranged on both sides of the shaft cover, and the anti-deflection rods pass through the adjustment sleeve.

[0012] Furthermore, the number of blades on each side panel is 3-5.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model has side plates rotatably arranged on both sides of a harvesting frame, a plurality of blades are arranged at intervals on the side plates, a cylinder is arranged on the harvesting frame, and the push-out end of the cylinder is connected to the side plates by a connecting rod, so that the inclination of the side plates can be adjusted, and the inclination of the side plates can be appropriately adjusted according to the position of tobacco leaf picking, and the tobacco leaf stems are cut by the rotation of the blades during the harvesting process, and the cutting direction is a vertical plane, so as to avoid cutting off the tobacco stems by horizontal cutting, and a distance-adjusting shaft is arranged in the cover shell, and threaded sections are arranged at both ends of the distance-adjusting shaft and an adjusting sleeve is connected to the threaded section, and the end of the side plate is clamped in the notch of the adjusting sleeve, so that when the distance-adjusting shaft rotates, the side plate is reciprocated by the movement of the adjusting sleeve, so that the blade can be close to the plant, and the device has a simple structure, low cost and can efficiently complete the harvesting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 This is a structural schematic diagram of the utility model from another viewing angle.

[0017] Figure 3 This is a schematic diagram of the knife shaft connection.

[0018] Figure 4 This is a schematic diagram of the adjustable shaft connection.

[0019] In the figure, 1-harvesting frame, 2-push handle, 3-moving wheel, 4-support plate, 5-cylinder base, 6-cylinder, 7-side plate, 8-blade, 9-blade shaft, 10-cover shell, 101-double-sided pulleys, 102-belt, 11-connecting rod, 12-fixed cross bar, 13-second motor, 14-second limiting ring, 15-first motor, 16-shaft cover, 161-active conical gear, 162-driven conical gear, 17-adjusting sleeve, 18-distance adjusting shaft, 181-smooth section, 182-threaded section, 183-first limiting ring, 19-anti-deviation rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Embodiment 1:

[0022] refer to Figure 1-2 As shown, the utility model provides a tobacco leaf harvesting device, including a harvesting frame 1, the bottom of the harvesting frame 1 is in an isosceles trapezoidal shape, so as to be suitable for walking in the trenches of the tobacco field, a moving wheel 3 is arranged at the bottom of the harvesting frame 1 and a push handle 2 is arranged at the rear side of the harvesting frame 1, a support plate 4 is arranged at the front side of the harvesting frame 1, a fixed cross bar 12 is arranged on the support plate 4, both ends of the fixed cross bar 12 extend out of the outside of the harvesting frame 1, side plates 7 are rotatably arranged at both ends of the fixed cross bar 12, the side plates 7 are also located outside the harvesting frame 1, and a plurality of knife shafts 9 are arranged at intervals on the outer wall of the side plate 7, and the plurality of knife shafts 9 rotate synchronously and the knife shafts 9 are A blade 8 is provided, and the number of blades 8 on each side plate 7 is 3-5. The blade 8 can be a straight strip or an arc shape, and the utility model is not limited to this. A cylinder base 5 is provided on both sides of the harvesting frame 1, and a cylinder 6 is rotatably provided on the cylinder base 5. The push-out end of the cylinder 6 is connected to the side plate 7 through a connecting rod 11. During the setting process of the connecting rod 11 and the cylinder 6, it is necessary to prevent the rotation of the blade 8 from being affected. A shaft cover 16 is provided on the support plate 4, and a pitch-adjusting shaft 18 is provided in the shaft cover 16, and a first motor 15 for driving the pitch-adjusting shaft 18 to rotate is provided on the outer side of the shaft cover 16;

[0023] In order to adjust the extension distance of the side plate 7 by means of the distance adjusting shaft 18, the distance adjusting shaft 18 includes a smooth section 181 and a threaded section 182, the threaded section 182 is located on both sides of the smooth section 181 and the thread directions of the two threaded sections 182 are opposite, the smooth section 181 is located in the shaft cover 16, and the threaded section 182 is located outside the shaft cover 16, first limiting rings 183 are provided at both ends of the threaded section 182, and an adjusting sleeve 17 is threadedly connected to the threaded section 182, the adjusting sleeve 17 moves between the two first limiting rings 183, a groove structure is provided on the outside of the adjusting sleeve 17, and the end of the side plate 7 is clamped in the groove structure, so that during the rotation of the distance adjusting shaft 18, the adjusting sleeves 17 on both sides can make reciprocating motions in opposite directions, thereby driving the side plate 7 to move back and forth, which is beneficial for the blade to be close to the tobacco plant. In addition, regarding the cylinder base 5 and the connecting rod 11, it should be noted that the connecting shaft of the cylinder base 5 and the connecting rod 11 needs to be of the same length as the threaded section 182, so that the cylinder 6 can also move axially, thereby avoiding interference.

[0024] Embodiment 2:

[0025] On the basis of the above embodiment, in order to drive the synchronous rotation of multiple knife shafts 9, refer to Figure 3 As shown, the knife shaft 9 passes through the side plate 7 and a double-sided pulley 101 is provided at the end of the knife shaft 9. Two adjacent double-sided pulleys 101 are connected by a belt 102. A cover 10 for covering the double-sided pulleys 101 is also provided on the inner side of the side plate 7. A second motor 13 is provided on the cover 10. The output end of the second motor 13 passes through the cover 10 and is connected to one of the double-sided pulleys 101. Two second limiting rings 14 are provided at both ends of the fixed crossbar 12. The second limiting ring 14 is located outside the harvesting frame 1 and the side plate 7 is located between the two second limiting rings 14. The second limiting ring 14 corresponds to the first limiting ring 183, thereby limiting the movement range of the side plate 7 again.

[0026] Embodiment 3:

[0027] On the basis of the above embodiment, in order to realize the rotation of the pitch-adjustable shaft 18, the output end of the first motor 15 passes through the shaft cover 16 and is provided with an active conical tooth 161 at the output end, and a driven conical tooth 162 is provided at the smooth section 181, and the active conical tooth 161 and the driven conical tooth 162 are meshed. Anti-deflection rods 19 are provided on both sides of the shaft cover 16, and the anti-deflection rods 19 pass through the adjustment sleeve 17, so that the adjustment sleeve 17 can move linearly without rotating with the pitch-adjustable shaft 18.

[0028] The working process of the utility model is that the cylinder (6) is started according to the height position of the tobacco leaves to be picked to adjust the inclination of the side plate (7). When only the tobacco leaves at the lower part of the tobacco plant need to be picked, the inclination of the side plate (7) can be lowered. When the tobacco leaves in the middle or even the upper part need to be picked together, the inclination of the side plate (7) can be appropriately increased, and the second motor (13) and the first motor (15) are started to rotate the blade (8), and the two side plates (7) move back and forth so that the blade (8) can approach the plants at different positions. After the blade (8) cuts the tobacco leaves, the tobacco leaves fall into the harvesting frame (1). It should be pointed out that in this process, a small amount of tobacco leaves will still not be cut and will not fall into the harvesting frame (1), but this error is allowed by the device and does not affect the use of the device.

[0029] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components or layout of the subject combination layout. In addition to the modifications and improvements made to the components or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A tobacco leaf harvesting device, comprising a harvesting frame (1), a moving wheel (3) is arranged at the bottom of the harvesting frame (1) and a push handle (2) is arranged at the rear side of the harvesting frame (1), characterized in that: The harvesting frame (1) is provided with a support plate (4) at the front side, a fixed cross bar (12) is provided on the support plate (4), two ends of the fixed cross bar (12) extend outward of the harvesting frame (1), side plates (7) are rotatably provided at the two ends of the fixed cross bar (12), a plurality of knife shafts (9) are arranged at intervals on the outer side walls of the side plates (7), the plurality of knife shafts (9) rotate synchronously and a blade (8) is arranged on the knife shaft (9), cylinder bases (5) are provided on both sides of the harvesting frame (1), a cylinder (6) is rotatably provided on the cylinder base (5), a push-out end of the cylinder (6) is connected to the side plate (7) through a connecting rod (11), a shaft cover (16) is provided on the support plate (4), a distance-adjusting shaft (18) is passed through the shaft cover (16), and a first motor (15) for driving the distance-adjusting shaft (18) to rotate is provided on the outer side of the shaft cover (16); The pitch-adjustable shaft (18) comprises a smooth section (181) and a threaded section (182), the threaded sections (182) being located on both sides of the smooth section (181) and the thread directions of the two threaded sections (182) being opposite, the smooth section (181) being located in the shaft cover (16) and the threaded section (182) being located outside the shaft cover (16), first limiting rings (183) being provided at both ends of the threaded section (182) and an adjusting sleeve (17) being threadedly connected to the threaded section (182), a groove structure being provided outside the adjusting sleeve (17), and an end of the side plate (7) being clamped in the groove structure.

2. A tobacco leaf harvesting device according to claim 1, characterized in that: The knife shaft (9) passes through the side plate (7) and a double-sided belt pulley (101) is arranged at the end of the knife shaft (9), and two adjacent double-sided belt pulleys (101) are connected by a belt (102). A cover shell (10) for covering the double-sided belt pulleys (101) is also arranged on the inner side of the side plate (7), and a second motor (13) is arranged on the cover shell (10), and the output end of the second motor (13) passes through the cover shell (10) and is connected to one of the double-sided belt pulleys (101).

3. A tobacco leaf harvesting device according to claim 1, characterized in that: Two second limiting rings (14) are provided at both ends of the fixed cross bar (12); the second limiting rings (14) are located outside the harvesting frame (1) and the side plate (7) is located between the two second limiting rings (14).

4. A tobacco leaf harvesting device according to claim 1, characterized in that: The output end of the first motor (15) passes through the shaft cover (16) and is provided with a driving conical tooth (161) at the output end, and a driven conical tooth (162) is provided at the smooth section (181), and the driving conical tooth (161) and the driven conical tooth (162) are meshed with each other.

5. A tobacco leaf harvesting device according to claim 4, characterized in that: Anti-deflection rods (19) are arranged on both sides of the shaft cover (16), and the anti-deflection rods (19) pass through the adjustment sleeve (17).

6. A tobacco leaf harvesting device according to claim 1, characterized in that: The number of blades (8) on each side plate (7) is 3-5.

Images