Double-wheel walking type harvester

Abstract

The utility model discloses a walking type harvester capable of walking through two wheels. The double-wheel walking walking type harvester comprises a machine frame with an operating handle at the rear end, an engine and a gearbox are installed on the machine frame, and an output shaft of the engine is in transmission connection with the gearbox through a clutch wheel and a gearbox transmission piece. A left output shaft and a right output shaft of the gearbox are connected with a left wheel and a right wheel through a left clutch and a right clutch respectively, a left handle for controlling the left clutch is arranged on the left side of the operating handle, and a right handle for controlling the right clutch is arranged on the right side of the operating handle. Two cutter shafts which are arranged left and right at an interval are rotationally installed on the lower side of the front end of the rack, a cutter head is arranged at the lower end of each cutter shaft, and a cutter shaft transmission box is arranged on the rack. The cutter head is arranged in an underneath mode, a continuous closed-loop cutting track is formed, and the grass winding phenomenon can be effectively avoided; the steering device can be easily operated by one person and stopped when an accelerator is released, and the steering function can be easily achieved by pulling or holding a steering handle with a hand by adopting a walking gearbox with a differential mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of harvester technology, and in particular relates to a two-wheel walking hand-held harvester. Background Technology

[0002] The demand for crops such as chili peppers and soybeans is increasing year by year, and the planting area is rapidly expanding. What used to be small-scale garden or plot cultivation has now evolved into large-scale planting. For example, Kailu County in Tongliao City, Inner Mongolia, has formed red chili pepper planting bases at the township level, and a deep-processing industrial chain has also been established. With the expansion of planting scale, the harvesting of crops such as chili peppers and soybeans has become an urgent problem to solve. Many regions cultivate large areas of chili peppers and soybeans, but during the harvest season, the outdated manual methods of cutting down the vines are still commonly used. This method is inefficient, labor-intensive, and consumes a lot of manpower. Mechanical harvesting of chili peppers and soybeans could obviously improve harvesting efficiency significantly. However, some large harvesting equipment requires the use of large power equipment. Given the limited resources of many farmers, using large machinery to harvest chili peppers and soybeans is impractical. Moreover, large equipment cannot be used to harvest chili peppers and soybeans planted in scattered plots. Therefore, many farmers need a simple crop harvester that can reduce harvesting costs and is easy to use.

[0003] Chinese utility model patent CN103718731B discloses a mini harvester for slopes. This harvester includes a walk-behind power assembly, a transmission system, a cutter, a sloping conveyor system, and a divider. Its main feature is that a power output shaft is located in front of the reducer of the walk-behind power assembly, which is connected to a coupling of the transmission system. A multi-stage reduction system is located above the middle of the transmission main shaft of the transmission system, which uses bevel gears and spur gears to mesh. The spur gears are fixed to the first-stage reduction output shaft. A conveyor drive pulley is located on the first-stage reduction output shaft, transmitting power to the sloping conveyor system above via a transmission belt. A divider is located on the bottom plate at the right end of the cutter. However, this harvester uses a scissor-type cutter head, which easily penetrates into the soil and is prone to deformation, blade jamming, and other safety hazards. Utility Model Content

[0004] In order to solve the above problems, the purpose of this utility model is to provide a two-wheel walking hand-held harvester.

[0005] The technical solution of this utility model is a two-wheel walking hand-held harvester:

[0006] A two-wheel walking hand-held harvester includes a frame with an operating handle at the rear end, an engine and a gearbox are mounted on the frame, and the output shaft of the engine is connected to the gearbox via a clutch wheel and a gearbox transmission component.

[0007] The left and right output shafts of the gearbox are connected to the left and right wheels respectively via a left clutch and a right clutch. The left side of the operating handle is provided with a left handle for controlling the left clutch, and the right side is provided with a right handle for controlling the right clutch.

[0008] Two cutter shafts are rotatably mounted on the lower front side of the frame, arranged at left and right intervals. Each cutter shaft has a cutter disc at its lower end. The frame is equipped with a cutter shaft transmission box, which is connected to the cutter shaft and the clutch wheel respectively through the cutter shaft transmission box transmission component.

[0009] The front end of the frame is also rotatably mounted with a reeling mechanism located above the cutter head. The frame is equipped with a reeling transmission box, which is connected to the input shaft of the gearbox through a reeling transmission box transmission component.

[0010] Furthermore, the front end of the frame is provided with a fixing plate, the cutter shaft is rotatably mounted on the lower rear side of the fixing plate, and the front side of the fixing plate is provided with a plurality of dividers evenly spaced in the left-right direction.

[0011] Furthermore, the reeling mechanism includes a reeling chain with several teeth evenly spaced along its length. The left and right ends of the fixed plate are respectively provided with reeling sprockets that match the reeling chain. The reeling transmission box is fixedly connected to the fixed plate, and the output shaft of the reeling transmission box is connected to the reeling sprocket on the left side.

[0012] Furthermore, the reeling chain has three chains, which are evenly spaced in the vertical direction. The reeling transmission box has two vertically coaxial output shafts. The upper output shaft of the reeling transmission box is connected to the uppermost reeling sprocket via a first transmission shaft, and the lower output shaft is connected to the two lower reeling sprockets via a second transmission shaft.

[0013] Furthermore, the front side of the fixing plate is provided with two rice lifters located on one side of the two cutter discs respectively. Each rice lifter includes a bracket, on which two rice lift wheels are rotatably mounted. The upper rice lift wheel is arranged at an angle, and the two rice lift wheels can be actuated by the teeth on the two lower rice-reeling chains respectively. There are three rice dividers. Two rice dividers are fixed to the front end of the bracket. The front side of the fixing plate is provided with a conical mounting frame, and the other rice lifter is fixedly connected to the front end of the mounting frame.

[0014] Furthermore, the output shaft of the gearbox is provided with a gearbox pulley, the gearbox transmission component includes a gearbox transmission belt, the gearbox transmission belt is wrapped between the gearbox pulley and the clutch pulley, the reel transmission box transmission component includes a reel transmission box chain, the input shaft of the reel transmission box is provided with a reel transmission box sprocket, the gearbox pulley is coaxially provided with a gearbox sprocket, and the reel transmission box chain is disposed between the reel transmission box sprocket and the gearbox sprocket.

[0015] Furthermore, the cutter shaft transmission box is connected to the cutter shaft and the clutch pulley respectively through the cutter shaft transmission box transmission component. The input shaft of the cutter shaft transmission box is provided with a cutter shaft transmission box input pulley, and the output shaft of the cutter shaft transmission box is provided with a cutter shaft transmission box output pulley. The cutter shaft transmission component includes a cutter shaft transmission belt, and the upper end of the cutter shaft is provided with a cutter shaft pulley. The cutter shaft transmission belt is respectively disposed between the cutter shaft pulley and the cutter shaft transmission box output pulley, and between the cutter shaft transmission box input pulley and the clutch pulley.

[0016] Furthermore, there are two cutter shaft transmission boxes, which are fixedly connected to the back of the fixed plate. The output shafts of the two cutter shaft transmission boxes are respectively connected to the two cutter shafts. The cutter shaft transmission boxes are connected to the clutch wheel through the cutter shaft transmission box transmission component. The input shaft of the cutter shaft transmission box is provided with a cutter shaft transmission box input pulley. The cutter shaft transmission component includes a cutter shaft transmission belt, which is disposed between the cutter shaft transmission box input pulley and the clutch wheel.

[0017] This utility model provides a two-wheel walking hand-held harvester, which has the following advantages compared with the prior art:

[0018] When using this utility model of a two-wheeled walking hand-held harvester, the operator holds the rear handle, using their left thumb to control the left clutch lever and their right thumb to control the right clutch lever. Single-sided disengagement allows for the minimum turning radius. The cutting force generated by the rotating cutter head and the conveying force of the rake chain form a dynamic balance. When the rake teeth grab the crop stalks, the rake wheel assists in correcting the crop's posture, the divider isolates the crop to be cut, and after the cutter head completes the root cutting, the crop is neatly laid out along the guide surface of the fixed plate under the push of the rake teeth. This connection system achieves full system drive from a single power source through multi-stage transmission, forming a spatial three-dimensional transmission network between the components, maximizing the reduction of the overall machine size while ensuring functionality.

[0019] This utility model relates to a two-wheeled walking hand-held harvester, which utilizes a single engine to drive a three-stage transmission system (walking / cutting / reeling). It employs a "clutch pulley-transmission belt-sprocket" combination architecture to maximize power distribution efficiency. The dual-shaft counter-rotating design generates opposing cutting forces, and combined with the under-mounted cutter head layout, forms a continuous closed-loop cutting trajectory, effectively preventing grass entanglement. This utility model allows for easy operation by one person; it stops instantly when the throttle is released. It features a walking gearbox with a differential, and turning is easily achieved by pulling or gripping the steering handle. Both the gearbox and the cutter shaft transmission box have a neutral gear, allowing the driven components to stop rotating independently. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the two-wheeled walking hand-held harvester provided in Embodiment 1 of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the two-wheeled walking hand-held harvester provided in Embodiment 1 of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of the two-wheeled walking hand-held harvester provided in Embodiment 1 of this utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the structure of the two-wheel walking hand-held harvester provided in Embodiment 2 of this utility model;

[0025] In the diagram: 1. Frame; 2. Operating handle; 3. Mounting plate; 4. Left drive wheel; 5. Right drive wheel; 6. Engine; 7. Gearbox; 8. Gear lever; 9. Left handle; 10. Right handle; 11. Clutch pulley; 12. Gearbox pulley; 13. Gearbox sprocket; 14. Cutter shaft; 15. Cutter disc; 16. Cutter shaft transmission box; 17. Cutter shaft transmission box input pulley; 18. Cutter shaft transmission box output pulley; 19. Cutter shaft pulley; 20. Cutter shaft transmission belt; 21. Gearbox transmission belt; 22. Reeling sprocket; 23. Reeling chain; 24. Reeling tooth; 25. Reeling transmission box; 26. Reeling transmission box sprocket; 27. Reeling transmission box chain; 28. Mounting frame; 29. ​​Divider; 30. Bracket; 31. Reeling wheel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] A specific embodiment of the two-wheeled walking hand-held harvester of this utility model is as follows: Figures 1 to 3 As shown, the machine includes a frame 1, with an engine 6 mounted at the rear. Its output shaft is connected to a clutch pulley 11 via a flange. The clutch pulley 11 is connected to the gearbox pulley 12 on the input shaft of the gearbox 7 via a gearbox drive belt 21, forming a belt drive. The gearbox 7 housing is fixed to the middle of the frame 1. Its left output shaft is rigidly connected to the shaft of the left drive wheel 4 via a left clutch, and its right output shaft is rigidly connected to the axle of the right drive wheel 5 via a right clutch. The left and right clutches are respectively linked to the left handle 9 and right handle 10 on both sides of the operating handle 2 via steel cables. The operator can independently control the clutch status of the two drive wheels using the left handle 9 and right handle 10 to achieve differential steering. When one clutch disengages, the corresponding drive wheel loses power, while the other side maintains drive to achieve steering. The gearbox 7 has a gear lever 8; by changing gears using the gear lever 8, the machine can achieve low-speed travel, high-speed travel, neutral, and reverse gear functions. The throttle can control the speed of engine 6. When the speed is reduced, the clutch wheel 11 is disengaged, and the whole machine stops working except for engine 6. The driving speed can be further controlled by the throttle position.

[0028] Two parallel cutter shafts 14 are rotatably mounted on the lower rear side of the fixing plate 3 at the front end of the frame 1 via bearing seats. A cutter disc 15 is fixedly connected to the lower end of each cutter shaft 14, and a cutter shaft pulley 19 is connected to the upper end via a key. The cutter shaft transmission box 16 is fixed to the back of the fixing plate 3. The input pulley 17 on its input shaft is connected to the clutch pulley 11 via a cutter shaft transmission belt 20. The output pulley 18 on its output shaft simultaneously drives the cutter shaft pulleys 19 of both cutter shafts via another set of cutter shaft transmission belts 20, forming a "one input, two outputs" transmission structure. The cutter shaft transmission box 16 has a neutral position, which can be manually operated to stop the cutter shaft rotation.

[0029] Three sets of reeling sprockets 22 are mounted on the left and right ends of the fixed plate 3 via bearings. Each set of reeling sprockets 22 drives a reeling chain 23, with reeling teeth 24 evenly welded to the chain surface. The reeling transmission box 25 is fixed behind the fixed plate 3. The reeling transmission box sprocket 26 mounted on its input shaft meshes with the gearbox sprocket 13 at the input shaft end of the gearbox 7 via the reeling transmission box chain 27. The reeling transmission box 25 is equipped with a set of distribution gears. The upper output shaft drives the uppermost reeling sprocket 22 via the first transmission shaft, and the lower output shaft drives the middle and bottom sets of reeling sprockets 22 simultaneously via the second transmission shaft, realizing the synchronous and opposite rotation of the three-layer chain.

[0030] Two crop lifters are welded to the front of the fixing plate 3. The two lifters are located on one side of each of the two cutter heads 15. Each lifter includes a bracket 30, and each bracket 30 has two sets of lifting wheels 31 mounted on it via a rotating shaft. The upper lifting wheel 31 is inclined to the vertical direction, while the lower lifting wheel 31 is horizontally arranged. The teeth 24 of the two lower lifting chains 23 contact the outer edge of the lifting wheel 31 during operation, driving the wheel 31 to rotate through friction. A conical mounting bracket 28 is bolted to the front of the fixing plate 3, with a crop divider 29 mounted at its front bottom. The front bottoms of the two brackets 30 are also equipped with crop dividers 29, forming a three-stage crop distribution and guiding structure. The crop divider 29 is made of thin-walled steel plate, with its sharp front end inserted into the crop clump.

[0031] When using this utility model of a two-wheeled walking hand-held harvester, the operator holds the rear handle, using their left thumb to control the left clutch lever and their right thumb to control the right clutch lever. Single-sided disengagement allows for the minimum turning radius. The cutting force generated by the rotation of the cutter head 15 and the conveying force of the reeling chain 23 form a dynamic balance. When the reeling teeth 24 grasp the crop stalks, the guiding wheel 31 assists in correcting the crop's posture, and the divider 29 isolates the crop to be cut. After the cutter head 15 completes the root cutting, the crop is neatly laid out along the guide surface of the fixed plate 3 under the push of the reeling teeth 24. This connection system achieves full system drive from a single power source through multi-stage transmission, forming a spatial three-dimensional transmission network between components, maximizing the reduction of the overall machine size while ensuring functionality.

[0032] This utility model discloses a two-wheel walking hand-held harvester driven by a single engine 6 through a three-stage transmission system (walking / cutting / picking). It employs a "clutch pulley 11-transmission belt-sprocket" combined architecture to maximize power distribution efficiency. The dual-blade shaft counter-rotating design generates opposing cutting forces, which, combined with the under-mounted cutter disc 15, forms a continuous closed-loop cutting trajectory, effectively preventing grass entanglement. This utility model allows for easy operation by one person; it stops immediately upon releasing the throttle. It uses a walking gearbox 7 with a differential, and turning is easily achieved by pulling or gripping the steering handle. Both the gearbox 7 and the cutter shaft transmission box 16 are equipped with a neutral gear, allowing the driven components to stop rotating independently.

[0033] A second specific embodiment of the two-wheeled walking hand-held harvester of this utility model is as follows: Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that there are two cutter shaft transmission boxes 16 in this embodiment. The two cutter shaft transmission boxes 16 are fixedly connected to the back of the fixing plate 3. The output shafts of the two cutter shaft transmission boxes 16 are respectively connected to the two cutter shafts 14. The cutter shaft transmission boxes 16 are connected to the clutch wheel 11 through the cutter shaft transmission box transmission component. The ends of the input shafts of the two cutter shaft transmission boxes 16 are fixedly connected, and the input pulleys 17 of the cutter shaft transmission boxes are fixedly connected to the input shafts. The cutter shaft transmission component includes a cutter shaft transmission belt 20, which is disposed between the input pulley 17 of the cutter shaft transmission box and the clutch wheel 11. The rest is the same as in Embodiment 1 and will not be described again.

[0034] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A dual wheeled walk-behind harvester characterized in that, The utility model provides a rear end has the operation handle, the rack is installed with engine and gearbox, the output shaft of engine is connected with gearbox through the clutch wheel and gearbox transmission part, The left side output shaft and right side output shaft of gearbox are connected with left wheel and right wheel through left clutch and right clutch respectively, the left side of operation handle is equipped with left handle controlling left clutch, and the right side is equipped with right handle controlling right clutch, The lower end of each cutter shaft is equipped with cutter head, the rack is equipped with cutter shaft transmission box, and the cutter shaft transmission box is connected with cutter shaft and clutch wheel transmission respectively, The front end of rack is also equipped with the harrowing mechanism located above cutter head, and the rack is equipped with harrowing transmission box, which is connected with the input shaft of gearbox through harrowing transmission box transmission part.

2. The dual wheeled walk-behind harvester of claim 1, wherein, The front end of rack is equipped with fixed plate, the cutter shaft is rotatably installed at the lower end of rear side of fixed plate, and the front side of fixed plate is equipped with multiple evenly spaced dividers along the left-right direction.

3. The dual wheeled walk-behind harvester of claim 2, wherein, The harrowing mechanism includes harrowing chain, the harrowing chain is equipped with multiple evenly spaced harrowing teeth along the length direction of harrowing chain, the left and right ends of fixed plate are respectively equipped with harrowing sprocket matched with harrowing chain, the harrowing transmission box is fixedly connected on the fixed plate, and the output shaft of harrowing transmission box is in transmission connection with the left harrowing sprocket.

4. The dual wheeled walk-behind harvester of claim 3, wherein, The harrowing chain has three, the three harrowing chains are evenly spaced along the up-down direction, the harrowing transmission box has two vertical coaxial output shafts, the upper output shaft of harrowing transmission box is connected with the uppermost harrowing sprocket through first transmission shaft, and the lower output shaft is connected with the two lower harrowing sprockets through second transmission shaft.

5. The dual wheeled walk-behind harvester of claim 4, wherein, The front side of fixed plate is equipped with two harrow supports located at the side of two cutter heads, the harrow support includes support, two harrow wheels are rotatably installed on the support, the upper harrow wheel is inclinedly arranged, the two harrow wheels can be respectively driven by the harrowing teeth on the two lower harrowing chains, the divider has three, two dividers are fixed at the front end of support, the front side of fixed plate is equipped with conical mounting bracket, and the other harrow support is fixedly connected at the front end of mounting bracket.

6. The dual wheeled walk-behind harvester of claim 1, wherein, The output shaft of gearbox is equipped with gearbox pulley, the gearbox transmission part includes gearbox transmission belt, the gearbox transmission belt is wound between gearbox pulley and clutch wheel, the harrowing transmission box transmission part includes harrowing transmission box chain, the input shaft of harrowing transmission box is equipped with harrowing transmission box sprocket, the gearbox pulley is coaxially equipped with gearbox sprocket, and the harrowing transmission box chain is arranged between harrowing transmission box sprocket and gearbox sprocket.

7. The dual-wheeled walk-behind harvester of claim 1, wherein, The knife shaft transmission case is driven by a knife shaft transmission case transmission member and is in driving connection with the knife shaft and the clutch wheel respectively, an input shaft of the knife shaft transmission case is provided with a knife shaft transmission case input pulley, an output shaft of the knife shaft transmission case is provided with a knife shaft transmission case output pulley, the knife shaft transmission member comprises a knife shaft transmission belt, the upper end of the knife shaft is provided with a knife shaft pulley, and the knife shaft transmission belt is arranged between the knife shaft pulley and the knife shaft transmission case output pulley and between the knife shaft transmission case input pulley and the clutch wheel.

8. The dual wheeled walk-behind harvester of claim 1, wherein, The knife shaft transmission case has two, the two knife shaft transmission cases are fixedly connected on the back of the fixed plate, the output shafts of the two knife shaft transmission cases are in transmission connection with the two knife shafts respectively, the knife shaft transmission case is in transmission connection with the clutch wheel through a knife shaft transmission case transmission member, the input shaft of the knife shaft transmission case is provided with a knife shaft transmission case input pulley, the knife shaft transmission member comprises a knife shaft transmission belt, and the knife shaft transmission belt is arranged between the knife shaft transmission case input pulley and the clutch wheel.

Images