Tobacco leaf harvesting vehicle

Abstract

The utility model relates to the technical field of tobacco leaf harvesting, in particular to a tobacco leaf harvesting vehicle which comprises a vehicle base used for displacement, a lifting platform and a cutting device, the lifting platform is arranged on the vehicle base, and the cutting device is arranged on the lifting platform. And the cutting device is movably connected with the vehicle base through the lifting platform. Through the arrangement of the lifting platform, the cutting device can cut tobacco plants with different heights, and the application range of the tobacco harvesting vehicle is greatly widened.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco leaf harvesting, and more specifically, to a tobacco leaf harvesting vehicle. Background Art

[0002] When harvesting tobacco leaves, workers need to use sickles to cut the stems of the tobacco plants and collect the stemmed tobacco leaves for drying. This work requires workers to remain bent over for a long time, which is highly labor-intensive and causes serious damage to the body. Therefore, a mechanized tobacco leaf harvesting equipment is needed.

[0003] A Chinese patent discloses a device for harvesting stemmed tobacco leaves, comprising an electric cart equipped with a support plate. A reduction motor is vertically mounted at the bottom of the support plate. The shaft of the reduction motor passes through the support plate and is fixedly connected to a cam at the top. A scissor assembly is mounted on the support plate. The scissor assembly comprises a base and two symmetrically arranged blades. The blades extend out of the support plate. The base is provided with a bracket. The bracket is slidably connected to a push-pull rod extending through the support plate. Connecting rods are hinged on both sides of the inner end of the push-pull rod. The other end of the connecting rod is hinged to the tail of the blade. A spring is connected between the outer end of the push-pull rod and the bracket. When the cam rotates, the push-pull rod is driven to reciprocate and extend. The reciprocating extension and contraction of the push-pull rod drives the two blades to open and close to achieve shearing. However, the device has a disadvantage: it cannot be adjusted in height. In reality, the optimal cutting height of different tobacco varieties is inconsistent. The device cannot be adjusted in height according to the type of tobacco leaves, and cannot harvest tobacco leaves of different heights. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiency of the prior art that tobacco leaves of different heights cannot be harvested, and to provide a tobacco leaf harvesting vehicle that can adjust the height of the cutter according to the height of the harvesting object.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A tobacco leaf harvesting vehicle is provided, comprising a vehicle base for displacement, a lifting platform and a cutting device, wherein the lifting platform is mounted on the vehicle base, the cutting device is mounted on the lifting platform, and the cutting device is movably connected to the vehicle base via the lifting platform.

[0007] With this setting, when it is necessary to harvest tobacco plants in the field, the user first adjusts the lifting platform according to the height of the plants to be harvested, so that the cutting device is at an appropriate height, and then operates the tobacco harvester to move along the ridges. During the movement, the cutting device cuts the tobacco stems, and the cut tobacco leaves with stems fall to both sides. Workers can directly collect the cut tobacco leaves with stems, which greatly improves the harvesting efficiency. The tobacco harvester is suitable for tobacco plants of different heights, which greatly improves the scope of application and practicality.

[0008] Preferably, the lifting platform includes a lifting plate, at least two guide columns and a first driving mechanism for controlling the lifting of the lifting plate. The guide columns are fixedly mounted on the vehicle base in the vertical direction, and the guide columns are also movably mounted on the lifting plate. The first driving mechanism is mounted on the vehicle base, and the output end of the first driving mechanism is also connected to the bottom of the lifting plate.

[0009] Through this setting, when the height needs to be adjusted, the user starts the first drive mechanism, and the first drive mechanism works to drive the lifting plate to rise or move down along the guide column, thereby adjusting the height of the cutting device, so that the cutting device can cut tobacco plants of different heights, greatly improving the scope of application and practicality.

[0010] Preferably, the first driving mechanism includes a driving motor, a screw and a lifting frame, the driving motor is fixedly installed on the vehicle base, the output shaft of the driving motor is connected to the screw, the lifting frame is fixedly installed on the bottom of the lifting plate, and a screw hole is provided at the bottom of the lifting frame, the screw is threadedly connected to the screw hole, and the screw, the lifting frame and the guide column together form a screw-nut transmission pair.

[0011] Through this arrangement, when the first driving mechanism is working, the driving motor drives the screw to rotate. Because the lifting frame is fixedly connected to the lifting plate, the lifting plate is limited by at least two guide columns and cannot rotate. Therefore, the lifting frame will move up or down under the drive of the screw. The screw-nut transmission pair has the advantage of a larger load and can carry the heavier cutting device on the lifting plate. The screw-nut transmission is precise and stable, which is convenient for users to adjust.

[0012] Preferably, the cutting device includes a second drive mechanism, a transmission assembly and two groups of cutting tools. The second drive mechanism is installed on the lifting platform. The output shaft of the second drive mechanism is connected to the transmission assembly. The transmission assembly is also connected to the cutting tools respectively. The two groups of cutting tools are symmetrically arranged on the left and right sides of the lifting platform.

[0013] Through this setting, when cutting tobacco plants, the second drive mechanism works and drives two sets of cutting tools through the transmission assembly. The two sets of cutting tools are installed on both sides of the lifting platform respectively, and can cut tobacco plants on the left and right sides of the vehicle body, which is conducive to improving cutting efficiency.

[0014] Preferably, the second driving mechanism adopts a diesel engine. Through this arrangement, sufficient cutting power can be provided for the cutting tool.

[0015] Preferably, the transmission assembly includes a main shaft, a first gear, a second gear, a transmission shaft, two universal joints, and two output shafts. One end of the main shaft is connected to the output end of the second driving mechanism, the first gear is mounted on the other end of the main shaft, the second gear is sleeved on the transmission shaft, and the first gear is meshed with the second gear. The two universal joints are respectively mounted at both ends of the transmission shaft, and the two universal joints are also respectively connected to the two output shafts, and the two output shafts are also respectively connected to the two groups of cutting tools.

[0016] Through this setting, the output end of the second drive mechanism outputs torque to the main shaft, and the main shaft transmits the torque to the transmission shaft through the first gear and the second gear. The transmission shaft transmits the torque to the two output shafts through the universal joints at both ends, and the output shaft then uses the torque to drive the cutting tool to work.

[0017] Preferably, the main shaft and the transmission shaft are perpendicular to each other, and the first gear and the second gear are both helical gears.

[0018] Preferably, the universal joint includes a cross shaft, a first kit and a second kit, the cross shaft includes two mutually perpendicular rotating shafts, the middle parts of the two rotating shafts are fixedly connected to form a cross structure, the first kit is provided with an input connecting hole and a first rotating part, the second kit is provided with an output connecting hole and a second rotating part, the first rotating part is rotatably connected to the opposite ends of the cross shaft, the second rotating part is rotatably connected to the other two ends of the cross shaft, the input connecting hole is fixedly connected to the transmission shaft, and the output connecting hole is fixedly connected to the output shaft.

[0019] Preferably, the cutting tool includes a steel plate, a sawtooth chain and a third gear. The steel plate is fixedly connected to the lifting plate. The third gear is arranged beside the end of the steel plate. The sawtooth chain is slidably mounted on the outside of the steel plate. The sawtooth chain is also engaged with the third gear, and the third gear is also fixedly mounted on the output shaft.

[0020] Through this setting, the steel plate and the lifting plate are fixedly connected to play a positioning role. The output shaft transmits the torque to the third gear, and the third gear drives the sawtooth chain to rotate along the outside of the steel plate, thereby realizing the cutting of the tobacco plants. Using a chain saw as a cutting tool can ensure that the plants are fully cut off, which is conducive to improving cutting efficiency.

[0021] Preferably, at least two mounting holes are provided in the middle of the steel plate, and the lifting plate is provided with mounting posts corresponding in number to the mounting holes, and the mounting posts pass through the mounting holes and are fixedly connected to the steel plate.

[0022] This arrangement prevents the steel plate from moving due to force during the cutting process, and multiple mounting columns can alleviate stress concentration on the steel plate, thereby preventing the steel plate from breaking and improving its service life.

[0023] Preferably, the angle between the steel plate and the horizontal plane is greater than 0 degrees and less than 90 degrees.

[0024] With this setting, the cutting surface of the cutting tool is tilted to form an inclined fracture on the tobacco plant. The cut tobacco leaves with stems fall down along the side away from the cutting tool under the action of gravity, which can prevent the tobacco leaves with stems from falling toward the vehicle body and avoiding obstruction to the movement of the vehicle body or the operation of the cutting tool.

[0025] Preferably, the vehicle base includes a frame, a drive assembly and a steering assembly, the drive assembly is movably mounted at the rear end of the frame, the steering assembly is movably mounted at the front end of the frame, and the lifting platform is mounted on the frame.

[0026] With this arrangement, the driving assembly provides power for the movement of the tobacco harvester, the user controls the direction of travel of the vehicle through the steering assembly, and the vehicle frame is used to support the lifting platform.

[0027] Preferably, the steering assembly includes a steering wheel, a front fork, a steering shaft and a handle. A steering hole is provided at the front end of the frame. The steering shaft is rotatably passed through the steering hole. The handle is fixedly connected to the top end of the steering shaft. The front fork is installed at the bottom end of the steering shaft. The steering wheel is rotatably connected to the front fork.

[0028] With this arrangement, the user can control the direction of the steering wheel by holding the handle, and the steering wheel guides the direction of travel of the vehicle body by changing its direction.

[0029] Preferably, a protective shell is further included, which is detachably connected to the vehicle frame. Air-avoidance grooves are provided on both sides of the protective shell, and the cutting tool is inserted into the air-avoidance grooves.

[0030] Through this setting, the protective shell can prevent tobacco leaves and other debris from being drawn into the internal structure, thereby increasing the service life. The cutting tool is arranged in the air avoidance groove to cut the tobacco plants outside without affecting the cutting work.

[0031] Preferably, the protective shell is streamlined, with a smaller cross-section at the front end than at the rear end. This configuration allows the protective shell to guide tobacco plants in front of the vehicle to the sides, allowing the extended cutting device to sever the tobacco stems. Furthermore, the streamlined protective shell reduces resistance between the vehicle and the plants when traveling through the field, thus saving energy.

[0032] Preferably, a snap-fitting groove is provided on the frame, a snap-fitting protrusion is installed on the inner side of the protective shell, and the protective shell is detachably connected to the frame through the cooperation between the snap-fitting groove and the snap-fitting protrusion.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] (1) By setting up a lifting platform, the cutting device can cut tobacco plants of different heights, which greatly improves the applicability of the tobacco harvester.

[0035] (2) By setting up the cutting device, the cutting tool can harvest the tobacco plants on both sides of the vehicle body at the same time, which greatly improves the work efficiency.

[0036] (3) Through the setting of the vehicle base, the user can conveniently control the direction of travel of the tobacco leaf cutting vehicle, making it easier for the user to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of a tobacco leaf harvesting vehicle according to the present invention;

[0038] Figure 2 This is a schematic diagram of the transmission assembly structure of a tobacco harvester vehicle of the present invention;

[0039] Figure 3 This is a schematic diagram of the universal joint structure of a tobacco harvester vehicle of the present invention;

[0040] Figure 4 This is a schematic structural diagram of a third embodiment of a tobacco leaf harvesting vehicle of the present utility model;

[0041] Figure 5 This is a schematic diagram of the position of the cutting tools of a tobacco harvester in the utility model.

[0042] The icon markings are explained as follows:

[0043] 1. Lifting platform; 11. Lifting plate; 111. Mounting column; 12. Guide column; 13. First drive mechanism; 131. Drive motor; 132. Screw; 133. Lifting frame; 2. Cutting device; 21. Second drive mechanism; 22. Transmission assembly; 221. Main shaft; 222. First gear; 223. Second gear; 224. Drive shaft; 225. Universal joint; 2251. Cross shaft; 2252. First kit; 2253. Second kit; 226. Output shaft; 23. Cutting tool; 231. Steel plate; 232. Sawtooth chain; 233. Mounting hole; 3. Car base; 31. Car frame; 32. Drive assembly; 33. Steering assembly; 331. Steering wheel; 332. Front fork; 333. Steering shaft; 334. Handle; 4. Protective shell; 41. Air avoidance groove. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0045] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0046] Example 1

[0047] like Figures 1 to 3 The figure shows the first embodiment of a tobacco harvester of the present invention, a tobacco harvester vehicle, comprising a vehicle base 3 for displacement, a lifting platform 1 and a cutting device 2, the lifting platform 1 being mounted on the vehicle base 3, the cutting device 2 being mounted on the lifting platform 1, and the cutting device 2 being movably connected to the vehicle base 3 through the lifting platform 1.

[0048] With this arrangement, when it is necessary to harvest tobacco plants in the field, the user first adjusts the lifting platform 1 according to the height of the plants to be harvested, so that the cutting device 2 is at a suitable height, and then operates the tobacco harvester to move along the ridges. During the movement, the cutting device 2 cuts the tobacco stems, and the cut tobacco leaves with stems fall to both sides. Workers can directly collect the cut tobacco leaves with stems, which greatly improves the harvesting efficiency. The tobacco harvester is suitable for tobacco plants of different heights, which greatly improves the scope of application and practicality.

[0049] As an embodiment of the present utility model, the lifting platform 1 includes a lifting plate 11, at least two guide columns 12 and a first driving mechanism 13 for controlling the lifting and lowering of the lifting plate 11. The guide columns 12 are fixedly mounted on the vehicle base 3 in the vertical direction, and the guide columns 12 are also movably arranged on the lifting plate 11. The first driving mechanism 13 is mounted on the vehicle base 3, and the output end of the first driving mechanism 13 is also connected to the bottom of the lifting plate 11.

[0050] Through this setting, when the height needs to be adjusted, the user starts the first drive mechanism 13, and the first drive mechanism 13 works to drive the lifting plate 11 to rise or move down along the guide column 12, thereby adjusting the height of the cutting device 2, so that the cutting device 2 can cut tobacco plants of different heights, greatly improving the scope of application and practicality.

[0051] As an embodiment of the present utility model, the first driving mechanism 13 includes a driving motor 131, a screw 132 and a lifting frame 133. The driving motor 131 is fixedly mounted on the vehicle base 3, and the output shaft 226 of the driving motor 131 is connected to the screw 132. The lifting frame 133 is fixedly mounted on the bottom of the lifting plate 11, and a screw hole is provided at the bottom of the lifting frame 133. The screw 132 is threadedly connected to the screw hole. The screw 132, the lifting frame 133 and the guide column 12 together form a screw-nut transmission pair.

[0052] Through this arrangement, when the first driving mechanism 13 is working, the driving motor 131 drives the screw 132 to rotate. Because the lifting frame 133 is fixedly connected to the lifting plate 11, the lifting plate 11 is limited by at least two guide columns 12 and cannot rotate. Therefore, the lifting frame 133 will move up or down under the drive of the screw 132. The screw-nut transmission pair has the advantage of a larger load and can carry the heavier cutting device 2 on the lifting plate 11. The screw-nut transmission is precise and stable, which is convenient for the user to adjust.

[0053] As an embodiment of the present utility model, the cutting device 2 includes a second drive mechanism 21, a transmission assembly 22 and two groups of cutting tools 23. The second drive mechanism 21 is installed on the lifting platform 1. The output shaft 226 of the second drive mechanism 21 is connected to the transmission assembly 22. The transmission assembly 22 is also connected to the cutting tools 23 respectively. The two groups of cutting tools 23 are symmetrically arranged on the left and right sides of the lifting platform 1.

[0054] Through this setting, when cutting tobacco plants, the second drive mechanism 21 works, and drives the two sets of cutting tools 23 to work through the transmission component 22. The two sets of cutting tools 23 are respectively installed on both sides of the lifting platform 1, and can cut the tobacco plants on the left and right sides of the vehicle body, which is conducive to improving cutting efficiency.

[0055] As an embodiment of the present invention, the second driving mechanism 21 adopts a diesel engine. Through this arrangement, sufficient cutting power can be provided for the cutting tool 23.

[0056] As an embodiment of the present utility model, the transmission assembly 22 includes a main shaft 221, a first gear 222, a second gear 223, a transmission shaft 224, two universal joints 225, and two output shafts 226. One end of the main shaft 221 is connected to the output end of the second driving mechanism 21, the first gear 222 is mounted on the other end of the main shaft 221, the second gear 223 is sleeved on the transmission shaft 224, and the first gear 222 is meshed with the second gear 223. The two universal joints 225 are respectively mounted at both ends of the transmission shaft 224, and the two universal joints 225 are also respectively connected to the two output shafts 226, and the two output shafts 226 are also respectively connected to the two sets of cutting tools 23.

[0057] Through this setting, the output end of the second drive mechanism 21 outputs torque to the main shaft 221, and the main shaft 221 transmits the torque to the transmission shaft 224 through the first gear 222 and the second gear 223. The transmission shaft 224 transmits the torque to the two output shafts 226 through the universal joints 225 at both ends. The output shaft 226 then uses the torque to drive the cutting tool 23 to work.

[0058] As an embodiment of the present invention, the main shaft 221 and the transmission shaft 224 are perpendicular to each other, and the first gear 222 and the second gear 223 are both helical gears.

[0059] As an embodiment of the present utility model, the universal joint 225 includes a cross shaft 2251, a first kit 2252 and a second kit 2253. The cross shaft 2251 includes two mutually perpendicular rotating shafts, and the middle parts of the two rotating shafts are fixedly connected to form a cross structure. The first kit 2252 is provided with an input connecting hole and a first rotating part, and the second kit 2253 is provided with an output connecting hole and a second rotating part. The first rotating part is rotatably connected to the opposite ends of the cross shaft 2251, and the second rotating part is rotatably connected to the other two ends of the cross shaft 2251. The input connecting hole is fixedly connected to the transmission shaft 224, and the output connecting hole is fixedly connected to the output shaft 226.

[0060] As an embodiment of the present utility model, the cutting tool 23 includes a steel plate 231, a serrated chain 232 and a third gear. The steel plate 231 is fixedly connected to the lifting plate 11. The third gear is arranged on the side of the end of the steel plate 231. The serrated chain 232 is slidably mounted on the outside of the steel plate 231. The serrated chain 232 is also engaged with the third gear, and the third gear is also fixedly mounted on the output shaft 226.

[0061] Through this setting, the steel plate 231 is fixedly connected to the lifting plate 11 to play a positioning role, the output shaft 226 transmits the torque to the third gear, and the third gear drives the sawtooth chain 232 to rotate along the outside of the steel plate 231, thereby realizing the cutting of the tobacco plants. Using a chain saw as the cutting tool 23 can ensure that the plants are fully cut off, which is conducive to improving cutting efficiency.

[0062] As an embodiment of the present invention, at least two mounting holes 233 are provided in the middle of the steel plate 231 , and the lifting plate 11 is provided with mounting columns 111 corresponding in number to the mounting holes 233 . The mounting columns 111 pass through the mounting holes 233 and are fixedly connected to the steel plate 231 .

[0063] This arrangement can prevent the steel plate 231 from moving due to force during the cutting process, and the multiple mounting posts 111 can relieve stress concentration on the steel plate 231, thereby preventing the steel plate 231 from breaking, which is beneficial to improving the service life.

[0064] With this setting, the cutting surface of the cutting tool 23 is set at an angle, forming an inclined fracture on the tobacco plant. The cut tobacco leaves with stems fall down along the side away from the cutting tool 23 under the action of gravity, which can prevent the tobacco leaves with stems from falling toward the vehicle body and avoiding obstruction to the movement of the vehicle body or the operation of the cutting tool 23.

[0065] Example 2

[0066] The following is a second embodiment of a tobacco harvester according to the present invention. This embodiment is similar to the first embodiment, except that further limitations are imposed on the vehicle base 3 .

[0067] As an embodiment of the present invention, the vehicle base 3 includes a frame 31, a drive assembly 32 and a steering assembly 33. The drive assembly 32 is movably mounted at the rear of the frame 31, the steering assembly 33 is movably mounted at the front end of the frame 31, and the lifting platform 1 is mounted on the frame 31.

[0068] With this arrangement, the driving assembly 32 provides power for the movement of the tobacco harvester, the user controls the direction of travel of the vehicle through the steering assembly 33, and the frame 31 is used to support the lifting platform 1.

[0069] As an embodiment of the present invention, the steering assembly 33 includes a steering wheel 331, a front fork 332, a steering shaft 333 and a handle 334. A steering hole is opened at the front end of the frame 31, the steering shaft 333 is rotatably passed through the steering hole, the handle 334 is fixedly connected to the top of the steering shaft 333, the front fork 332 is installed at the bottom end of the steering shaft 333, and the steering wheel 331 is rotatably connected to the front fork 332.

[0070] With this arrangement, the user can control the direction of the steering wheel 331 by holding the handle 334 , and the steering wheel 331 guides the direction of travel of the vehicle body by changing its direction.

[0071] Example 3

[0072] like Figure 4 and Figure 5This is the third embodiment of a tobacco harvester of the present invention. This embodiment is similar to the first embodiment, except that it further includes a protective shell 4 .

[0073] As an embodiment of the present invention, a protective shell 4 is further included. The protective shell 4 is detachably connected to the frame 31 . Air-avoiding grooves 41 are opened on both sides of the protective shell 4 , and the cutting tool 23 is inserted into the air-avoiding grooves 41 .

[0074] Through this setting, the protective shell 4 can prevent tobacco plant leaves and other debris from being drawn into the internal structure, thereby increasing its service life. The cutting tool 23 is arranged in the air-avoiding groove 41 to cut the tobacco plants outside without affecting the cutting work.

[0075] As one embodiment of the present invention, the protective shell 4 is streamlined, with a smaller cross-section at the front end than at the rear end. This configuration allows the protective shell 4 to guide tobacco plants in front of the vehicle to the sides, allowing the extended cutting device 2 to sever the tobacco stems. Furthermore, the streamlined protective shell 4 also reduces resistance between the vehicle and the plants when navigating through fields, thus saving energy.

[0076] As an embodiment of the present invention, the angle between the steel plate 231 and the horizontal plane is greater than 0 degrees and less than 90 degrees.

[0077] As an embodiment of the present invention, a snap-fit ​​groove is provided on the vehicle frame 31 , and a snap-fit ​​protrusion is installed on the inner side of the protective shell 4 . The protective shell 4 is detachably connected to the vehicle frame 31 through the cooperation between the snap-fit ​​groove and the snap-fit ​​protrusion.

[0078] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A tobacco leaf harvesting vehicle, characterized in that: It comprises a vehicle base (3) for displacement, a lifting platform (1) and a cutting device (2), wherein the lifting platform (1) is mounted on the vehicle base (3), the cutting device (2) is mounted on the lifting platform (1), and the cutting device (2) is movably connected to the vehicle base (3) via the lifting platform (1); The vehicle base (3) includes a vehicle frame (31), a driving assembly (32) and a steering assembly (33), wherein the driving assembly (32) is movably mounted on the rear end of the vehicle frame (31), the steering assembly (33) is movably mounted on the front end of the vehicle frame (31), and the lifting platform (1) is mounted on the vehicle frame (31); The cutting device (2) comprises a second driving mechanism (21), a transmission assembly (22) and two groups of cutting tools (23); the second driving mechanism (21) is mounted on the lifting platform (1); an output shaft (226) of the second driving mechanism (21) is connected to the transmission assembly (22); the transmission assembly (22) is further connected to the cutting tools (23), respectively; the two groups of cutting tools (23) are symmetrically arranged on the left and right sides of the lifting platform (1); It also includes a protective shell (4), the protective shell (4) being detachably connected to the vehicle frame (31), and air-avoidance grooves (41) being provided on both sides of the protective shell (4), and the cutting tool (23) being inserted into the air-avoidance grooves (41).

2. The tobacco leaf harvesting vehicle according to claim 1, characterized in that: The lifting platform (1) includes a lifting plate (11), at least two guide columns (12) and a first driving mechanism (13) for controlling the lifting of the lifting plate (11). The guide columns (12) are fixedly mounted on the vehicle base (3) in a vertical direction, and the guide columns (12) are also movably mounted on the lifting plate (11). The first driving mechanism (13) is mounted on the vehicle base (3), and the output end of the first driving mechanism (13) is also connected to the bottom of the lifting plate (11). The cutting device (2) is mounted on the lifting plate (11).

3. The tobacco leaf harvesting vehicle according to claim 2, characterized in that: The first driving mechanism (13) includes a driving motor (131), a screw (132) and a lifting frame (133), wherein the driving motor (131) is fixedly mounted on the vehicle base (3), an output shaft (226) of the driving motor (131) is connected to the screw (132), the lifting frame (133) is mounted on the bottom of the lifting plate (11), and a screw hole is provided at the bottom of the lifting frame (133), the screw (132) is threadedly connected to the screw hole, and the screw (132), the lifting frame (133) and the guide column (12) together form a screw-nut transmission pair.

4. The tobacco leaf harvesting vehicle according to claim 3, characterized in that: The transmission assembly (22) includes a main shaft (221), a first gear (222), a second gear (223), a transmission shaft (224), two universal joints (225), and two output shafts (226). One end of the main shaft (221) is connected to the output end of the second driving mechanism (21). The first gear (222) is mounted on the other end of the main shaft (221). The second gear (223) is sleeved on the transmission shaft (224), and the first gear (222) is meshed with the second gear (223). The main shaft (221) and the two universal joints (225) are respectively mounted on the two ends of the transmission shaft (224). The two universal joints (225) are also respectively connected to the two output shafts (226). The two output shafts (226) are also respectively connected to the two groups of cutting tools (23).

5. The tobacco leaf harvesting vehicle according to claim 4, characterized in that: The cutting tool (23) includes a steel plate (231), a sawtooth chain (232) and a third gear. The steel plate (231) is fixedly connected to the lifting platform (1). The third gear is arranged beside the end of the steel plate (231). The sawtooth chain (232) is slidably mounted on the outside of the steel plate (231). The sawtooth chain (232) is also engaged with the third gear. The third gear is also fixedly mounted on the output shaft (226).

6. The tobacco leaf harvesting vehicle according to claim 5, characterized in that: At least two mounting holes (233) are provided in the middle of the steel plate (231), and a corresponding number of mounting posts (111) are provided on the lifting plate (11), and the mounting posts (111) are passed through the mounting holes (233) and fixedly connected to the steel plate (231).

7. The tobacco leaf harvesting vehicle according to claim 1, characterized in that: The steering assembly (33) comprises a steering wheel (331), a front fork (332), a steering shaft (333) and a handle (334); a steering hole is provided at the front end of the vehicle frame (31); the steering shaft (333) is rotatably inserted into the steering hole; the handle (334) is fixedly connected to the top end of the steering shaft (333); the front fork (332) is mounted on the bottom end of the steering shaft (333); and the steering wheel (331) is rotatably connected to the front fork (332).

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