Sugar cane field defoliation vehicle

Abstract

The present application relates to a kind of sugarcane field defoliation car, its structure includes car body, walking system, power system and defoliation device;Power system includes engine, gearbox and clutch, engine drives power cylinder to rotate around axis, clutch is connected with gearbox by first transmission shaft and second transmission shaft being sleeved on first transmission shaft, work power output shaft and walking power output shaft are provided on gearbox, first transmission shaft is drivingly connected with work power output shaft, second transmission shaft is drivingly connected with walking power output shaft;Walking system includes steering wheel for turning and track device for driving walking, track device is connected with walking power output shaft;Defoliation device is set on car body, is connected with work power output shaft, for the defoliation treatment to the sugarcane plant on both sides.The present application can walk stably in the ridge ditch between two rows of sugarcane plants, and carry out sugarcane defoliation treatment, can cross ridge ditch and prevent rollover.

Description

Technical Field

[0001] This invention relates to agricultural machinery, specifically a sugarcane defoliation vehicle. Background Technology

[0002] During sugarcane growth, the lower leaves turn yellow and dry, with only the top leaves capable of photosynthesis. When harvesting sugarcane, the top must be removed, along with the leaves on the stalk; otherwise, the net weight of the sugarcane and its purchase price will be affected. In fact, the dry leaves in the middle and lower parts should be removed after the sugarcane has grown taller. Firstly, these dry leaves cannot photosynthesize; leaving them on the stalk is not only useless but also hinders ventilation between plants, resulting in a larger wind-exposed area and increasing the risk of lodging in strong winds. Secondly, subsequent leaf removal is necessary during harvesting; removing the leaves in advance saves time and effort in later stages and ensures a higher net weight of the harvested sugarcane.

[0003] However, sugarcane growers nowadays generally do not remove leaves from sugarcane in advance because the row spacing of sugarcane plants is small, generally less than 100 centimeters, which traditional machinery cannot enter. Leaf removal can only be done manually, but because sugarcane plants are tall and the leaves are dense, manual leaf removal requires a lot of manpower and time.

[0004] Even if traditional agricultural machinery such as tractors are modified to fit the row spacing of sugarcane plants, the high center of gravity of these smaller machines makes them prone to tipping over when moving through the U-shaped furrows created during sugarcane planting. Furthermore, the high furrows prevent the machines from turning at the edge of the field, and forcing their way through will also cause them to tip over. Additionally, traditional steering control systems require long lateral linkages on both sides of the steering gear, resulting in a large overall width of the steering control unit. When the vehicle body is narrow, the limited lateral space restricts the movement of these linkages, limiting the range of motion of the steering wheels and making them unsuitable for narrow vehicles.

[0005] Existing tracked structures can adapt to complex terrain, so they are commonly used in current agricultural machinery. However, when these structures move through U-shaped furrows between plants, the track is always under load on one side, leading to frequent track detachment. Furthermore, track installation is difficult, especially within the furrows, making installation and maintenance challenging. Additionally, existing tracked systems cannot prevent tipping over when crossing furrows. These factors limit the use of machinery for defoliation of sugarcane plants in the field.

[0006] Most existing defoliation devices remove leaves after the sugarcane stalks are cut, so they do not need to consider the height of the sugarcane stalks. They can also remove leaves by rotating the sugarcane or from multiple angles to ensure that the leaves are removed cleanly. However, when removing leaves from sugarcane that is being produced in the field, it is necessary to consider the different growth stages of the sugarcane and how to remove the leaves from the vertical sugarcane stalks.

[0007] Traditional agricultural machinery power units are complex in structure and large in size, making them unsuitable for smaller agricultural equipment. To remove leaves from sugarcane stalks in the field, small, self-propelled agricultural machinery is needed, possessing both a walking mechanism and a leaf-removing device. Existing small agricultural machinery, due to its limited size, uses a simple power system where the walking and leaf-removing devices share a single clutch. During operation, shifting gears requires disconnecting the power via the clutch before shifting gears. However, disconnecting the power also stops the leaf-removing device, and it can only restart after the power is reconnected. This results in frequent starts of the leaf-removing device, affecting the normal operation and quality of leaf removal, and also placing high demands on the operator's skill level.

[0008] Therefore, there is an urgent need for a mechanical device that can move within the furrows, is not prone to tipping over, and can quickly remove leaves from sugarcane plants. Summary of the Invention

[0009] The purpose of this invention is to provide a sugarcane field defoliation vehicle to solve the problem that existing mechanical equipment cannot perform sugarcane defoliation between sugarcane plant rows with small spacing.

[0010] The present invention is implemented as follows: a sugarcane field defoliation vehicle, comprising a vehicle body, a walking system, a power system, and a defoliation device.

[0011] The power system includes an engine mounted on the vehicle body, a gearbox, and a clutch mounted on the gearbox. The engine drives the power cylinder to rotate around its axis via a transmission mechanism. The clutch is connected to the gearbox via a first transmission shaft and a second transmission shaft sleeved on the first transmission shaft. The first and second transmission shafts are connected to the gearbox as two power inputs to the gearbox. The gearbox is provided with a work power output shaft and a travel power output shaft. The first transmission shaft is driven to the work power output shaft, and the second transmission shaft is driven to the travel power output shaft.

[0012] The walking system includes steering wheels mounted on the vehicle body for turning and track devices for driving movement, the track devices being connected to the walking power output shaft.

[0013] The leaf-removing device is mounted on the vehicle body and connected to the working power output shaft, and is used to remove leaves from the sugarcane plants on both sides.

[0014] The track device includes a drive shaft, on which a track drive wheel is mounted. A swing sleeve is fitted onto the drive shaft, and a swing frame is connected to the lower part of the swing sleeve. Two track driven wheels are mounted on the swing frame. The track drive wheel and the two track driven wheels are arranged in a triangle. A track is mounted on the track drive wheel and the two track driven wheels. A tooth is provided on the track drive wheel. Tooth holes that mate with the tooth are evenly arranged along the length of the track on the center line of the track.

[0015] Two guide protrusions are provided between two adjacent tooth holes on the inner side of the track. The gap between the two guide protrusions is used to accommodate the disc of the track drive wheel. A groove is provided on the surface of the track driven wheel. The groove is used to accommodate the guide protrusions.

[0016] A first limiting hole and a second limiting hole are provided on the surface of the swing sleeve. The length of the first limiting hole in the circumferential direction of the swing sleeve is greater than the length of the second limiting hole in the circumferential direction of the swing sleeve. A fixed limiting pin and a movable limiting pin are provided on the vehicle body. The fixed limiting pin is inserted into the first limiting hole, and the movable limiting pin is inserted into the second limiting hole. The insertion or removal of the movable limiting pin is controlled by a control mechanism.

[0017] The clutch includes a power cylinder and outer and inner end plates located at both ends of the power cylinder. A first drive shaft passes through the center of the outer and inner end plates, and a second drive shaft is sleeved on the first drive shaft. The first and second drive shafts extend outward from the center of the inner end plate. A first active friction disc and a second active friction disc are slidably disposed within the power cylinder and rotate together with the power cylinder. A first passive friction disc, rotating synchronously with the first drive shaft, is slidably connected to the first drive shaft, and a second passive friction disc, rotating synchronously with the second drive shaft, is slidably connected to the second drive shaft. The first active friction disc and the first passive friction disc are pressed together by a first elastic element, and the second active friction disc and the second passive friction disc are pressed together by a second elastic element. A separation control mechanism is provided on one side of the power cylinder, which is used to drive the sequential separation between the first active friction disc and the first passive friction disc, and between the second active friction disc and the second passive friction disc.

[0018] The separation control mechanism includes a separation sleeve fitted onto the extended section of the second drive shaft. A thrust bearing is provided at the end of the separation sleeve. Several first levers and second levers are arranged around the center on the inner end plate. The middle parts of the first levers and the middle parts of the second levers are respectively hinged to the inner end plate. A first pull rod is connected to the outer end of the first lever, and a second pull rod is connected to the outer end of the second lever. The first pull rod is connected to the first active friction disc, and the second pull rod is connected to the second active friction disc. The distances from the inner ends of the first levers and the second levers to the inner end plate are different. When the separation sleeve approaches the end face of the inner end plate, the thrust bearing contacts the first levers and the second levers in sequence.

[0019] A partition plate is provided inside the power cylinder, and the partition plate is fixedly connected to the inner wall of the power cylinder. The end of the second transmission shaft is connected to the inner hole of the partition plate through a bearing. The first elastic element contacts the partition plate, and the second elastic element contacts the inner end plate.

[0020] The leaf removal device includes a fixed frame and a movable frame. The movable frame is driven by a lifting device to move vertically on the fixed frame. Power wheel sets are arranged on both sides of the fixed frame. Each power wheel set includes a leaf removal drive wheel and guide wheels located on the upper and lower sides of the leaf removal drive wheel. The leaf removal shaft of the leaf removal drive wheel is the power input shaft. Several leaf removal wheels are arranged on the movable frame. The leaf removal wheels are divided into two groups, and the two groups of leaf removal wheels are respectively located on the mounting frames on both sides of the movable frame. Each group of leaf removal wheels is distributed vertically along the height direction of the movable frame. A coaxial leaf removal driven wheel is connected to the leaf removal shaft of the leaf removal wheel. A first flexible transmission member is attached to the leaf removal drive wheel and passes around the guide wheels in both vertical and horizontal directions to connect with the adjacent leaf removal driven wheels above and below the power wheel set. Other leaf removal driven wheels on the same side are connected to the leaf removal shaft of the adjacent leaf removal wheel through a second flexible transmission member.

[0021] The mounting frame for mounting the impeller on the movable frame is located on both sides of the fixed frame. Power frames are provided on both sides of the fixed frame, and the power wheel set is set on the power frame. A vertical moving groove is opened on the mounting frame, the power frame extends to the mounting frame, and the power wheel set is located in the moving groove.

[0022] The distance between the impellers in each group and the moving frame gradually increases from bottom to top, and the two groups of impellers are staggered in the front-back direction of the moving frame; the minimum distance between one group of impellers and the moving frame is greater than or equal to the maximum distance between the other group of impellers and the moving frame.

[0023] The sugarcane field defoliation vehicle of the present invention can move between two rows of sugarcane plants with small spacing, and will not overturn or have its tracks come off when moving in the furrows. It can adapt to various requirements such as moving along the furrows and turning over the furrows.

[0024] Meanwhile, the power system of the present invention has a compact structure and small size. The power of the engine is input to the gearbox through the first and second transmission shafts of the clutch, and is respectively connected to the working power output shaft and the traveling power output shaft to provide power to the traveling device and the de-leafing device. The power of the traveling device can be disconnected separately through the clutch to perform gear shifting operation of the traveling device without affecting the normal operation of the de-leafing device.

[0025] Furthermore, the leaf-removing device of the present invention adjusts the height of the moving frame via a lifting device, enabling the removal of leaves at different heights on both sides of the sugarcane plant. When removing leaves from the sugarcane, the lower leaf-removing wheel first removes leaves from the lower part of the sugarcane, then the middle leaf-removing wheel removes leaves from the middle part, and finally the upper leaf-removing wheel removes leaves from the upper part. For the same sugarcane plant, the lower, middle, and upper parts are removed sequentially without interference between them, thus improving both leaf-removing efficiency and quality. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the present invention.

[0027] Figure 2 This is a structural diagram of the clutch, gearbox, and track device of the present invention.

[0028] Figure 3 This is an inner side view of the track of the present invention.

[0029] Figure 4 This is a diagram showing the connection structure between the invention's swing sleeve and the fixed and movable limit pins.

[0030] Figure 5 This is a schematic diagram of the transmission principle of the steering control device of the present invention.

[0031] Figure 6 yes Figure 5 Front view.

[0032] Figure 7 This is a structural diagram of the clutch of the present invention.

[0033] Figure 8 This is a structural diagram of the inner end plate of the present invention.

[0034] Figure 9 This is a structural diagram of the inner end face of the power housing of the present invention.

[0035] Figure 10 This is a structural diagram of the outer end face of the power housing of the present invention.

[0036] Figure 11 This is a structural diagram of the separator plate of the present invention.

[0037] Figure 12 This is a structural diagram of the first active friction disk / second active friction disk of the present invention.

[0038] Figure 13 This is a structural diagram of the leaf removal device of the present invention.

[0039] Figure 14 This is a structural diagram of the mobile frame and the power frame of the present invention.

[0040] Figure 15 This is a structural diagram of the fixing frame of the present invention.

[0041] Figure 16 This is a distribution diagram of a set of impellers on the left side of the present invention.

[0042] Figure 17 This is a distribution diagram of a set of impellers on the right side of the present invention.

[0043] In the diagram: 1. Vehicle body; 2. Clutch; 3. Engine; 4. Gearbox; 5. Steering wheel; 6. Track assembly; 7. Steering control device; 8. De-flange device; 9. Working power take-off shaft; 10. Traveling power take-off shaft;

[0044] 2-1 Power cylinder body; 2-2 Outer end plate; 2-3 Inner end plate; 2-4 First drive shaft; 2-5 Second drive shaft; 2-6 First active friction disc; 2-7 First elastic element; 2-8 First passive friction disc; 2-9 Second active friction disc; 2-10 Second elastic element; 2-11 Second passive friction disc; 2-12 Partition plate; 2-13 Separator sleeve; 2-14 Thrust bearing; 2-15 First lever; 2-16 Second lever; 2-17 First pull rod; 2-18 Second pull rod; 2-19 Belt groove; 2-20 Slide groove; 2-21 Fixed mounting part; 2-22 Clearance opening; 2-23 Snap-fit ​​part;

[0045] 6-1. Drive shaft; 6-2. Track drive wheel; 6-3. Track driven wheel; 6-4. Track; 6-5. Mounting sleeve; 6-6. Swing sleeve; 6-7. Swing frame; 6-8. Gear tooth; 6-9. Groove; 6-10. Tooth hole; 6-11. Guide protrusion; 6-12. First limiting hole; 6-13. Second limiting hole; 6-14. Fixed limiting pin; 6-15. Movable limiting pin; 6-16. Fixed sleeve; 6-17. Third elastic element; 6-18. Traction element;

[0046] 7-1. Steering wheel; 7-2. Steering shaft; 7-3. Steering gear; 7-4. First rocker arm; 7-5. First link; 7-6. Second link; 7-7. Third link; 7-8. Second rocker arm; 7-9. Steering wheel mounting bracket; 7-10. Steering sleeve; 7-11. Steering rod; 7-12. Long strip hole; 7-13. Lateral bar;

[0047] 8-1 Fixed frame; 8-2 Moving frame; 8-3 De-blade drive wheel; 8-4 Guide wheel; 8-5 De-blade wheel; 8-6 De-blade driven wheel; 8-7 Lifting device; 8-8 Power input shaft; 8-9 Power frame; 8-10 Roller; 8-11 First flexible transmission component; 8-12 Second flexible transmission component; 8-13 Upper limit component; 8-14 Lower limit component; 8-15 Extension sleeve; 8-16 De-blade rotating shaft; 8-17 Moving groove. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings.

[0049] like Figure 1 As shown, the present invention is a sugarcane field defoliation vehicle, which mainly includes a vehicle body 1, a walking system, a power system, and a defoliation device 8.

[0050] The power system includes an engine 3 mounted on the vehicle body 1, a gearbox 4, and a clutch 2 mounted on the gearbox 4. The engine 3 drives the power cylinder 2-1 to rotate around the axis through a transmission mechanism. The clutch 2 is connected to the gearbox 4 through a first transmission shaft and a second transmission shaft 2-5 sleeved on the first transmission shaft 2-4. The first transmission shaft 2-4 and the second transmission shaft 2-5 are connected to the gearbox 4 as two power inputs to the gearbox 4. The gearbox 4 is provided with a working power output shaft 9 and a traveling power output shaft 10. The first transmission shaft 2-4 is driven by the working power output shaft 9, and the second transmission shaft 2-5 is driven by the traveling power output shaft 10.

[0051] The walking system includes steering wheels 5 mounted on the vehicle body 1 for turning and track devices 6 for driving the vehicle. The track devices 6 are connected to the walking power output shaft 10.

[0052] The leaf removal device 8 is mounted on the vehicle body 1 and connected to the working power output shaft 9, and is used to remove leaves from the sugarcane plants on both sides.

[0053] The walking system of this invention adopts a combination of wheeled and tracked systems 6-4, enabling the vehicle body 1 to move stably on complex terrain while easily adjusting its direction of travel. Specifically, there are two steering wheels 5 located on both sides of the front of the vehicle body 1, and two tracked devices 6 located on both sides of the rear of the vehicle body 1.

[0054] like Figure 1 , Figure 2 , Figure 3 As shown, the track device 6 includes a drive shaft 6-1, which is connected to the working power output shaft 9, or the drive shaft 6-1 and the working power output shaft 9 are the same shaft, driven to rotate by the drive device on the vehicle body 1. A track drive wheel 6-2 is provided on the drive shaft 6-1 and rotates together with the drive shaft 6-1. A swing sleeve 6-6 is sleeved on the drive shaft 6-1 and can rotate around the drive shaft 6-1. A swing frame 6-7 is connected to the lower part of the swing sleeve 6-6. Two track driven wheels 6-3 are provided on the swing frame 6-7. The shafts of the two track driven wheels 6-3 are mounted on the swing frame 6-7. The two track driven wheels 6-3 are located on the front and rear sides below the track drive wheel 6-2, respectively. The track drive wheel 6-2 and the two track driven wheels 6-3 are arranged in a triangle. Tracks 6-4 are provided on the track drive wheel 6-2 and two track driven wheels 6-3. The track drive wheel 6-2 has a tooth 6-8. Tooth holes 6-10 that mate with the tooth 6-8 are evenly provided along the length of the track 6-4 on the center line of the track 6-4. When the track drive wheel 6-2 rotates, it can drive the track 6-4 to move.

[0055] In the track device 6, two driven track wheels 6-3 support the track 6-4, making the lower part of the track 6-4 a straight section of a certain length, which is used for direct contact with the ground. When the vehicle body 1 travels in the U-shaped furrow, one side of the straight section of the lower part of the track 6-4 contacts the furrow surface, and one side of the track 6-4 is subjected to force. Due to the stable support of the track 6-4 by the triangularly arranged drive track wheel 6-2 and driven track wheel 6-3, and because the track 6-4 is relatively short, the deformation that it can produce under unilateral force is much smaller than the deformation required for the track 6-4 to detach from the drive track wheel 6-2 or driven track wheel 6-3. Therefore, this structure can effectively prevent the track 6-4 from detaching.

[0056] At the same time, the teeth 6-8 on the track drive wheel 6-2 mesh with the tooth holes 6-10 on the surface of the track 6-4, which can prevent the track 6-4 from coming off the track drive wheel 6-2.

[0057] Two guide protrusions 6-11 are provided between two adjacent tooth holes 6-10 on the inner side of the track 6-4. The gap between the two guide protrusions 6-11 is used to accommodate the disc of the track drive pulley 6-2. A groove 6-9 is provided on the surface of the track driven pulley 6-3. When the track drive pulley 6-2 meshes with the track 6-4, the teeth 6-8 are inserted into the tooth holes 6-10 of the track 6-4, while the guide protrusions 6-11 ride on the tooth grooves of the track drive pulley 6-2, further ensuring that the track 6-4 cannot disengage from the track drive pulley 6-2. At the same time, when the track 6-4 contacts the track driven pulley 6-3, the guide protrusions 6-11 are located in the groove 6-9 of the track driven pulley 6-3, and the cooperation between the groove 6-9 and the guide protrusions 6-11 restricts the track 6-4 from disengaging from the track driven pulley 6-3.

[0058] Since the groove 6-9 on the track driven wheel 6-3 has a complete wheel surface on both sides, when moving in the U-shaped furrow, the outer side of the track 6-4 is subjected to force. After being subjected to force, the track 6-4 directly acts on the outer wheel surface of the track driven wheel 6-3. The track 6-4 is supported by the wheel surfaces of the two closely spaced track driven wheels 6-3. This can effectively avoid the lateral force that would cause the track 6-4 to detach from the wheel body when it is subjected to force on one side.

[0059] Anti-slip protrusions are evenly distributed on the outer side of track 6-4 along its extension direction. These anti-slip protrusions can increase the friction between track 6-4 and the ground.

[0060] Among them, the track 6-4 is made of rubber, which has excellent wear resistance and flexibility.

[0061] The two driven tracks 6-3 have the same diameter, which is approximately the same as the diameter of the driving track 6-2. The gaps between the two driven tracks 6-3 and between the driven tracks 6-3 and the driving tracks 6-2 are smaller than the radii of the driven tracks 6-3. The width of the track 6-4 is greater than the thickness of the driven tracks 6-3, and the thickness of the driven tracks 6-3 is approximately the same as its radius. The compact structure of the driving tracks 6-2 and the two driven tracks 6-3 minimizes the total length of the track 6-4, thereby reducing the possibility of the track 6-4 disengaging.

[0062] One of the driven rollers 6-3 has its shaft fixedly mounted on the swing frame 6-7 through an elongated hole. The distance between the two driven rollers 6-3 can be adjusted, allowing the track 6-4 to be easily installed on the drive roller 6-2 and the two driven rollers 6-3. Before installing the track 6-4, the distance between the two driven rollers 6-3 should be adjusted to the minimum. After the track 6-4 is installed on the drive roller 6-2 and the driven roller, the distance between the two driven rollers 6-3 should be adjusted to tension the track 6-4, thereby preventing the track 6-4 from coming off.

[0063] To adapt to undulating terrain, the track device 6 can swing up and down. The existing obstacle-crossing mechanism of track 6-4 is set on the mounting frame of track 6-4 wheel, allowing track 6-4 wheel located at the turning point of the front end of track 6-4 to swing up and down, thereby achieving obstacle crossing. However, this structure results in a larger track device 6 and a correspondingly longer track 6-4. The increased length of track 6-4 increases the possibility of track 6-4 derailment.

[0064] In order to ensure the compactness of the track device 6 structure and the shortest possible length of the track 6-4, the obstacle crossing of the track device 6 of the present invention is achieved by the rotation of the swing frame 6-7 and the swing sleeve 6-6 around the drive shaft 6-1.

[0065] Among them, such as Figure 2 , Figure 4 As shown, a mounting sleeve 6-5 is provided on the vehicle body 1. The mounting sleeve 6-5 is fixed to the side of the vehicle body 1. The drive shaft 6-1 passes through the mounting sleeve 6-5 and is connected to the mounting sleeve 6-5 through a bearing. The drive shaft 6-1 can rotate freely within the mounting sleeve 6-5, thereby transmitting the power of the vehicle body 1 to the track drive wheel 6-2 through the drive shaft 6-1. The swing sleeve 6-6 is sleeved on the outside of the mounting sleeve 6-5. When encountering undulations, the swing sleeve 6-6 rotates on the mounting sleeve 6-5 around the drive shaft 6-1, thereby realizing the up-and-down swing of the swing frame 6-7 and the two track driven wheels 6-3.

[0066] Because the track device 6 of the present invention has a compact structure and small size, when encountering a steep slope, the front of the track device 6 is subject to resistance, which can easily cause the entire track device 6 to rotate backward around the drive shaft 6-1, causing the two driven wheels 6-3 of the track to be arranged vertically. Therefore, it is necessary to limit the swing amplitude of the swing frame 6-7.

[0067] A first limiting hole 6-12 and a second limiting hole 6-13 are provided on the surface of the swing sleeve 6-6. The length of the first limiting hole 6-12 in the circumferential direction of the swing sleeve 6-6 is greater than the length of the second limiting hole 6-13 in the circumferential direction of the swing sleeve 6-6. A fixed limiting pin 6-14 and a movable limiting pin 6-15 are provided on the vehicle body 1. The fixed limiting pin 6-14 is inserted into the first limiting hole 6-12, and the movable limiting pin 6-15 is inserted into the second limiting hole 6-13. The insertion or removal of the movable limiting hole is controlled by a control mechanism.

[0068] The track device 6 of the present invention limits the swing range of the swing sleeve 6-6 through the first limiting hole 6-12 and the second limiting hole 6-13. When the vehicle body 1 travels on terrain with small undulations, such as in the furrow (moving along the furrow direction), the swing frame 6-7 needs a small swing range to adapt to the undulating ground. At this time, the movable limiting pin 6-15 is inserted into the second limiting hole 6-13, and the swing range of the swing sleeve 6-6 is limited by the length of the second limiting hole 6-13. When vehicle 1 reaches the end of the furrow and needs to turn, vehicle 1 needs to cross the ridge. When vehicle 1 passes through terrain with large height differences such as ridges and high embankments, the swing frame 6-7 needs to have a large swing range. At this time, the movable limiting pin 6-15 is pulled out from the second limiting hole 6-13. In this way, the swing range of the swing sleeve 6-6 will be limited by the length of the first limiting hole 6-12. Since the length of the first limiting hole 6-12 is greater than that of the second limiting hole 6-13, the swing range of the swing sleeve 6-6 becomes larger to meet the obstacle crossing needs of vehicle 1 for obstacles of greater height.

[0069] The first limiting hole 6-12 is located at the lower part of the swing sleeve 6-6, and the second limiting hole 6-13 is located at the upper part of the swing sleeve 6-6.

[0070] As shown in the figure, the control mechanism includes a fixed sleeve 6-16. The end of a movable limiting pin 6-15 passes through the fixed sleeve 6-16. A third elastic element 6-17, typically a spring, is installed inside the fixed sleeve 6-16. A traction element 6-18 is connected to the end of the movable limiting pin 6-15 that passes through the sleeve, and the traction element 6-18 extends out of the fixed sleeve 6-16. Pulling the traction element 6-18 with external force can pull the movable limiting pin 6-15 out of the second limiting hole 6-13, simultaneously compressing the spring. When the external force is released, the movable limiting pin 6-15 automatically resets and inserts back into the second limiting hole 6-13 under the restoring force of the spring. The traction element 6-18 can extend to the driver's seat of the vehicle body 1 via a rope, brake cable, etc., facilitating quick operation and control by the driver.

[0071] like Figure 1 , Figure 5 , Figure 6 As shown, the present invention also includes a steering control device 7 for controlling the swing angle of the steering wheel 5. The steering control device 7 includes a steering wheel 7-1 device mounted on the vehicle body 1, a steering wheel mounting bracket 7-9, and a transmission control mechanism.

[0072] The steering wheel 7-1 device is located at the front of the vehicle body 1 and behind the steering wheel mounting bracket 7-9. A first swing arm 7-4 driven by the steering wheel 7-1 device is provided on one side of the steering wheel 7-1 device. The first swing arm 7-4 swings up and down around the swing axis.

[0073] The steering wheel mounting bracket 7-9 is located at the front of the vehicle body 1. Vertical steering sleeves 7-10 are respectively installed on both sides of the steering wheel mounting bracket 7-9. Steering rods 7-11 pass through the steering sleeves 7-10 and can rotate within them. The lower ends of the two steering rods 7-11 on both sides are connected to the steering wheels 5. When the steering rods 7-11 rotate within the steering sleeves 7-10, they can cause the steering wheels 5 to swing together. A second rocker arm 7-8 is installed at the upper end of one side of the steering rod 7-11. The second rocker arm 7-8 and the first rocker arm 7-4 are located on different sides of the vehicle body 1, respectively. The second rocker arm 7-8 drives the steering rod 7-11 on that side to rotate, thereby directly causing the steering wheel 5 on that side to turn.

[0074] The two steering wheels 5 on both sides are connected by a tie rod (not shown in the figure), so that when the steering wheel 5 on the side with the second rocker arm 7-8 swings, the other steering wheel 5 also swings together to ensure the synchronicity of the two steering wheels 5.

[0075] The first swing arm 7-4 and the second swing arm 7-8 are connected by a transmission control mechanism, which includes a first link 7-5, a second link 7-6, and a third link 7-7. The first link 7-5 is located a certain distance behind the steering wheel 7-1, spans the width of the vehicle body 1, and its two ends are located on both sides of the vehicle body 1. The middle of the first link 7-5 is hinged to the vehicle body 1, allowing it to swing around the hinge point on the horizontal plane. The first swing arm 7-4, located on one side of the vehicle body 1, is connected to one end of the first link 7-5 via the second link 7-6, and the second swing arm 7-8, located on the other side of the vehicle body 1, is connected to the other end of the first link 7-5 via the third link 7-7.

[0076] Since the first pendulum 7-4, the second pendulum 7-8, and the first connecting rod 7-5 are not in the same plane, ball joints are installed at one or both ends of the first connecting rod 7-5 and the second connecting rod 7-6 to ensure a stable connection between the pendulum and the connecting rod.

[0077] In order to install the first link 7-5, elongated holes 7-12 are provided on the side walls on both sides of the vehicle body 1. The first link 7-5 passes through the elongated holes 7-12. The elongated holes 7-12 have a certain length to accommodate the swing of the first link 7-5.

[0078] Among them, such as Figure 5 , Figure 6 As shown, the steering wheel mounting bracket 7-9 includes two horizontal rods 7-13 arranged side by side. The ends of the horizontal rods 7-13 are connected to the steering sleeve 7-10, and the middle of the horizontal rods 7-13 is hinged to the vehicle body 1. The steering sleeve 7-10 has a rectangular cross-section and a hole along its length for a vertical steering rod 7-11 to pass through. The steering rod 7-11 passes through the steering sleeve 7-10 and can rotate around its own axis within the steering sleeve 7-10. The ends of the horizontal rods 7-13 are two protruding connecting ears. The steering sleeve 7-10 is located between the two connecting ears and is connected to the connecting ears by a pin. The steering sleeve 7-10 can rotate around the pin at a certain angle within the space between the two connecting ears.

[0079] In this way, the two transverse rods 7-13 and the two steering sleeves 7-10 form a parallelogram structure. When the two transverse rods 7-13 swing around the central hinge axis, the two steering sleeves 7-10 always remain vertical. When encountering uneven road surfaces on both sides, the two steering wheels 5 move up and down at different heights. Through the aforementioned parallelogram structure, the two transverse rods 7-13 swing, allowing the two steering wheels 5 to adapt to the different uneven road conditions on both sides. However, the two steering sleeves 7-10 always remain vertical, thus preventing the vehicle body 1 from tilting due to uneven road surfaces on both sides. The structure of the steering wheel mounting bracket 7-9, together with the track device 6, can further prevent the vehicle body 1 from overturning.

[0080] The steering wheel 7-1 assembly includes a steering shaft 7-2, a steering wheel 7-1 located at one end of the steering shaft 7-2, and a steering gear 7-3 located at the other end of the steering shaft 7-2. The output shaft of the steering gear 7-3 is arranged horizontally in the left-right direction of the vehicle body 1, and is connected to a first rocker arm 7-4. Rotating the steering wheel 7-1 can drive the steering shaft 7-2 to rotate, and the steering gear 7-3 converts the direction of power into rotation about the horizontal axis of the vehicle body 1.

[0081] Among them, the steering gear 7-3 can be a worm gear steering gear 7-3, which increases the output of steering force through the transmission ratio of the worm gear. At the same time, since the worm gear mechanism has a self-locking function, the swing of the steering wheel 5 is only controlled by the steering wheel 7-1 and will not be affected by external forces.

[0082] The aforementioned steering control device 7 is specifically designed for a narrower vehicle body 1. The torsional force of the steering wheel 7-1 is output to one side through the steering gear 7-3, and then converted into a pulling force through the first rocker arm 7-4. The pulling force is then transmitted backward through the second tie rod 2-18 to the first link 7-5, which has a lever structure. The pulling force is transmitted to the other side of the vehicle body 1 through the lever structure of the first link 7-5, and then transmitted to the second rocker arm 7-8 through the third tie rod. The second rocker arm 7-8 converts the pulling force into a torsional force that acts on the steering rod 7-11, thereby turning the steering wheel 5 on that side. The two steering wheels 5 are connected by a tie rod, thereby achieving synchronous steering of the two steering wheels 5.

[0083] This invention replaces the original linkages along the width of the vehicle body 1 with linkages along the length of the vehicle body 1. Utilizing the relatively ample space along the length of the vehicle body 1, the force output from one side of the steering wheel 7-1 and steering gear 7-3 is transmitted to the other side via multiple linkages, thereby controlling the steering wheel 5. This structure has lower space requirements in the width direction of the vehicle body 1, making it suitable for very narrow vehicle bodies 1 and meeting the steering control requirements of narrow vehicle bodies 1.

[0084] The power system of this invention includes an engine 3, a gearbox 4, and a clutch 2. The clutch 2 is mounted on one side of the gearbox 4. The power from the engine 3 is transmitted to the clutch 2 via a belt or other transmission component, and then from the clutch 2 to the gearbox 4. The gearbox 4 is equipped with a working power output shaft 9 and a traveling power output shaft 10. Specifically, a belt groove 2-19 is provided on the side wall surface of the power cylinder 2-1, a pulley is provided on the output shaft of the engine 3, and a belt is installed on the pulley and the belt groove 2-19.

[0085] The working power output shaft 9 is used to drive the leaf removal device 8 of the agricultural machinery, and the walking power output shaft 10 is used to drive the walking device of the agricultural machinery.

[0086] Among them, such as Figure 7 As shown, the clutch 2 includes a power cylinder 2-1 and an outer end plate 2-2 and an inner end plate 2-3 located at both ends of the power cylinder 2-1. A first drive shaft 2-4 is inserted through the center of the outer end plate 2-2 and the inner end plate 2-3. A second drive shaft 2-5 is sleeved on the first drive shaft 2-4. The first drive shaft 2-4 and the second drive shaft 2-5 extend outward from the center of the inner end plate 2-3.

[0087] The power cylinder 2-1, outer end plate 2-2, and inner end plate 2-3 together form the housing of the clutch 2. The first drive shaft 2-4 is located at the axis of the clutch 2. The outer end of the first drive shaft 2-4 is mounted on the center of the outer end plate 2-2 via a bearing. At the same time, the first drive shaft 2-4 passes through the inner end plate 2-3 and extends into the gearbox 4. The inner end of the first drive shaft 2-4 is mounted on the gearbox 4 via a bearing. The second drive shaft 2-5 is a sleeve structure. The second drive shaft 2-5 is sleeved on the first drive shaft 2-4. The first drive shaft 2-4 and the second drive shaft 2-5 can rotate freely relative to each other. The outer end of the second drive shaft 2-5 is located in the middle of the width direction of the power cylinder 2-1 and is indirectly mounted on the power cylinder 2-1 via a bearing. The second drive shaft 2-5 passes through the inner end plate 2-3 and is mounted on the inner end plate 2-3 via a bearing. The inner end of the second drive shaft 2-5 extends into the gearbox 4 and is mounted on the gearbox 4 via a bearing.

[0088] Transmission gears are mounted on the first drive shaft 2-4 and the second drive shaft 2-5 located within the gearbox 4. These gears connect the first drive shaft 2-4 and the second drive shaft 2-5 to the working power output shaft 9 or the traveling power output shaft 10 via different transmission lines. Gear shifting between the two output shafts is achieved through the shift fork and shift sleeve of the gearbox 4. The shifting principle and structure of the gearbox 4 are existing structures and will not be described further in this embodiment.

[0089] A first active friction disc 2-6 and a second active friction disc 2-9 are disposed inside the power cylinder 2-1 and rotate together with the power cylinder 2-1. The first active friction disc 2-6 and the second active friction disc 2-9 can move axially along the power cylinder 2-1 while rotating together with the power cylinder 2-1. A first passive friction disc 2-8 is slidably connected to a first transmission shaft 2-4, and a second passive friction disc 2-11 is slidably connected to a second transmission shaft 2-5. The first passive friction disc 2-8 is keyed to the first transmission shaft 2-4, so that the first passive friction disc 2-8 rotates synchronously with the first transmission shaft 2-4. The second passive friction disc 2-11 is keyed to the second transmission shaft 2-5, so that the second passive friction disc 2-11 rotates synchronously with the second transmission shaft 2-5.

[0090] Friction transmission is achieved through contact between the active friction disc and the passive friction disc. The first active friction disc 2-6 and the first passive friction disc 2-8 are pressed together by the first elastic element 2-7, and the second active friction disc 2-9 and the second passive friction disc 2-11 are pressed together by the second elastic element 2-10. After pressing, stable power transmission can be achieved. The rotation of the power cylinder 2-1 drives the transmission of the first transmission shaft 2-4 and the second transmission shaft 2-5.

[0091] In this embodiment, the first active friction disc 2-6 and the first passive friction disc 2-8 are located on the outer side of the power cylinder 2-1, and the second active friction disc 2-9 and the second passive friction disc 2-11 are located on the inner side of the power cylinder 2-1. A partition plate 2-12 is provided between the outer side and the inner side.

[0092] The partition plate 2-12 is fixedly connected to the inner wall of the power cylinder 2-1, and the end of the second transmission shaft 2-5 is connected to the inner hole of the partition plate 2-12 via a bearing. The first elastic element 2-7 is located between the first active friction disc 2-6 and the partition plate 2-12, pressing the first active friction disc 2-6 onto the first passive friction disc 2-8. The position of the first passive friction disc 2-8 is limited by the outer end plate 2-2. The second elastic element 2-10 is located between the second active friction disc 2-9 and the inner end plate 2-3, pressing the second active friction disc 2-9 onto the second passive friction disc 2-11. The position of the second passive friction disc 2-11 is limited by the partition plate 2-12.

[0093] Specifically, the first elastic element 2-7 and the second elastic element 2-10 can be springs.

[0094] The separation of the first active friction disc 2-6 from the first passive friction disc 2-8 and the separation of the second active friction disc 2-9 from the second passive friction disc 2-11 are achieved by the separation control mechanism.

[0095] The separation control mechanism is located on one side of the power cylinder 2-1, specifically at the inner end of the power cylinder 2-1. The separation control mechanism includes a separation sleeve 2-13 that extends from the second drive shaft 2-5. The separation sleeve 2-13 can move axially along the second drive shaft 2-5 and can also rotate relative to the second drive shaft 2-5. A thrust bearing 2-14 is provided at the end of the separation sleeve 2-13. Figure 8 As shown, several first levers 2-15 and second levers 2-16 are arranged around the center on the inner end plate 2-3. The first levers 2-15 and second levers 2-16 are staggered. The middle part of the first lever 2-15 and the middle part of the second lever 2-16 are respectively hinged to the inner end plate 2-3. The outer end of the first lever 2-15 is connected to the first pull rod 2-17, and the outer end of the second lever 2-16 is connected to the second pull rod 2-18. The first pull rod 2-17 is connected to the first active friction disc 2-6, and the second pull rod 2-18 is connected to the second active friction disc 2-9. The distances from the inner ends of the first lever 2-15 and the second lever 2-16 to the inner end plate 2-3 are different. When the separating sleeve 2-13 approaches the inner end plate 2-3, the thrust bearing 2-14 contacts the inner ends of the first lever 2-15 and the second lever 2-16 successively. This causes the outer end of the first lever 2-15 to pull the first pull rod 2-17 and the outer end of the second lever 2-16 to pull the second pull rod 2-18. This causes the first active friction disc 2-6 to separate from the first passive friction disc 2-8 and compress the first elastic element 2-7, and causes the second active friction disc 2-9 to separate from the second passive friction disc 2-11 and compress the second elastic element 2-10. When the separating sleeve 2-13 moves away from the inner end plate 2-3, under the action of the first elastic element 2-7 and the second elastic element 2-10, the first active friction disc 2-6 resumes contact with the first passive friction disc 2-8, and the second active friction disc 2-9 resumes contact with the second passive friction disc 2-11.

[0096] Because the distance between the inner ends of the first lever 2-15 and the second lever 2-16 and the inner end plate 2-3 is different, in this embodiment, when the separating sleeve 2-13 drives the thrust bearing 2-14 to move, it first contacts the second lever 2-16. Then, through the second pull rod 2-18, it drives the second active friction disc 2-9 to separate from the second passive friction disc 2-11, thereby causing the second rotating shaft to lose power. At this time, the gear shifting operation can be performed through the gearbox 4. Since the first active friction disc 2-6 and the first passive friction disc 2-8 are still in contact, the first transmission shaft 2-4 can still continuously output power, thereby driving the de-leaf device 8 to continue to operate through the working power output shaft 9. After the gear shifting operation is completed, the separating sleeve 2-13 is reset, the second active friction disc 2-9 and the second passive friction disc 2-11 resume contact, the second transmission shaft 2-5 resumes power, thereby driving the walking device to operate through the walking power output shaft 10. When the leaf removal device 8 needs to stop operating, the separating sleeve 2-13 moves to the inner end plate 2-3. The thrust bearing 2-14 contacts the second lever 2-16 and the first lever 2-15 in turn. Through the second pull rod 2-18 and the first pull rod 2-17, the second active friction disc 2-9 is separated from the second passive friction disc 2-11 and the first active friction disc 2-6 is separated from the first passive friction disc 2-8, respectively. As a result, the second drive shaft 2-5 loses power and the first drive shaft 2-4 also loses power. At this time, the leaf removal device 8 also stops operating.

[0097] For ease of operation, a lever is provided on the release sleeve 2-13. The lever is connected to the clutch pedal via a brake cable, etc. The operator controls the power output by pressing the clutch pedal and controls the separation and contact of the two sets of friction discs by the depth of the clutch pedal.

[0098] To ensure the stability of power transmission, there are two of each of the first active friction disc 2-6, the first passive friction disc 2-8, the second active friction disc 2-9, and the second passive friction disc 2-11. Multiple sets of friction discs are used to ensure stable power transmission.

[0099] The length of the first drive shaft 2-4 extending into the gearbox 4 is greater than the length of the second drive shaft 2-5 extending into the gearbox 4, so that the first drive shaft 2-4 extends out from the end of the second drive shaft 2-5, so as to facilitate the installation of the transmission gear.

[0100] like Figure 9 , Figure 10 As shown, several grooves 2-20 evenly distributed along the circumference are provided on the inner wall of the power cylinder 2-1, such as... Figure 12As shown, several locking portions 2-23, evenly distributed along the circumferential direction, protrude from the outer edges of the first active friction disk 2-6 and the second active friction disk 2-9. The locking portions 2-23 of the first active friction disk 2-6 and the second active friction disk 2-9 are respectively located in different sliding grooves 2-20, allowing the first active friction disk 2-6 and the second active friction disk 2-9 to move along the sliding grooves 2-20. The first pull rod 2-17 / second pull rod 2-18 are connected to the locking portions 2-23 of the first active friction disk 2-6 / second active friction disk 2-9. The movement of the first active friction disk 2-6 and the second active friction disk 2-9 is independent and will not interfere with each other.

[0101] like Figure 11 As shown, the partition plate 2-12 has several fixed mounting parts 2-21 around its circumference. The fixed mounting parts 2-21 are fixed to the power cylinder 2-1 by bolts, thereby fixing the partition plate 2-12 to the power cylinder 2-1. A clearance opening 2-22 is provided on the edge of the partition plate 2-12 to allow passage of the first tie rod 2-17 or the second tie rod 2-18.

[0102] The clutch 2 is mounted on the gearbox 4. The engine 3 drives the power housing of the clutch 2 to rotate. The clutch 2 has two drive shafts connected to the gearbox 4: a first drive shaft 2-4 and a second drive shaft 2-5. The first drive shaft 2-4 and the second drive shaft 2-5 are respectively connected to the power cylinder 2-1 through friction discs, so that the first drive shaft 2-4 and the second drive shaft 2-5 rotate together with the power cylinder 2-1. The separation control mechanism can control the friction discs on the first drive shaft 2-4 and the second drive shaft 2-5 to separate in sequence, so that the first drive shaft 2-4 and the second drive shaft 2-5 can rotate together, one of the first drive shaft 2-4 and the second drive shaft 2-5 can rotate alone, and neither the first drive shaft 2-4 nor the second drive shaft 2-5 can rotate.

[0103] The first drive shaft 2-4 and the second drive shaft 2-5 are connected to the working power output shaft 9 and the traveling power output shaft 10 respectively via the gearbox 4, providing power to the traveling device and the leaf removal device 8. This allows for independent disconnection of the traveling device's power for gear shifting without affecting the normal operation of the leaf removal device 8. The aforementioned power system has a compact structure and small size, making it suitable for small-sized agricultural machinery.

[0104] like Figure 1 , Figure 13 , Figure 14 , Figure 15As shown, the leaf removal device 8 of the present invention includes a fixed frame 8-1 and a movable frame 8-2. A lifting device 8-7 is provided between the fixed frame 8-1 and the movable frame 8-2, and the lifting device 8-7 drives the movable frame 8-2 to move vertically on the fixed frame 8-1.

[0105] Both the fixed frame 8-1 and the movable frame 8-2 are rectangular frame structures. The movable frame 8-2 includes mounting frames on both sides and a crossbar connecting the two mounting frames. The width of the movable frame 8-2 is greater than the width of the fixed frame 8-1. The movable frame 8-2 is located behind the fixed frame 8-1, and the fixed frame 8-1 is located between the two mounting frames of the movable frame 8-2.

[0106] The lifting device 8-7 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0107] Power wheel sets are arranged on both sides of the fixed frame 8-1. Each power wheel set includes a de-leaf driving wheel 8-3 and guide wheels 8-4 located on the upper and lower sides of the de-leaf driving wheel 8-3. The de-leafing shaft 8-16 of the de-leaf driving wheel 8-3 serves as the power input shaft 8-8. The fixed frame 8-1 of this invention is mounted on the vehicle body 1 and powered by a power unit on the vehicle body 1. The position between the power output shaft of the power unit and the power input shaft 8-8 of the de-leaf driving wheel 8-3 is fixed. The two are connected by a belt or chain drive to transmit power to the de-leaf driving wheel 8-3, driving the two de-leaf driving wheels 8-3 to rotate synchronously.

[0108] Two sets of de-impellers 8-5 are installed on the movable frame 8-2, each set including several de-impellers 8-5. The two sets of de-impellers 8-5 are located on the mounting frames on both sides of the movable frame 8-2, and each set of de-impellers 8-5 is distributed vertically along the height of the movable frame 8-2. Coaxial de-impeller driven wheels 8-6 are connected to the de-impeller shaft 8-16 of the de-impeller 8-5. The first flexible transmission component 8-11 is attached to the de-impeller driving wheel 8-3 and passes around the guide wheel 8-4 in both vertical and horizontal directions before connecting to the adjacent de-impeller driven wheels 8-6 above and below the power wheel set. Other de-impeller driven wheels 8-6 on the same side are connected to the de-impeller shaft 8-16 of the adjacent de-impeller 8-5 through the second flexible transmission component 8-12.

[0109] The two guide wheels 8-4 are used to ensure the wrap angle between the first flexible transmission component 8-11 and the de-blade drive wheel 8-3, and at the same time guide the first flexible transmission component 8-11.

[0110] Power frames 8-9 are provided on both sides of the fixed frame 8-1, and power wheel sets are set on the power frames 8-9. At the same time, a vertical moving groove 8-17 is opened on the mounting frame. The power frames 8-9 extend to the mounting frame, and the power wheel sets are located in the moving groove 8-17. The power wheel sets on the power frames 8-9 can move up and down in the moving groove 8-17. The power wheel sets will not affect the up and down movement of the moving frame 8-2.

[0111] Meanwhile, when the moving frame 8-2 moves up and down, although the height of the de-leaf drive wheel 8-3 remains unchanged, the relative displacement between the moving frame 8-2 and the de-leaf drive wheel 8-3 is offset by the movement of the flexible drive component. In this way, even if the de-leaf drive wheel 8-3 is located on the fixed frame 8-1, the de-leaf driven wheel 8-6 ​​can move up and down with the moving frame 8-2 without affecting the transmission between the de-leaf drive wheel 8-3 and the de-leaf driven wheel 8-6. In the working state, while the de-leaf drive wheel 8-3 drives the de-leaf driven wheel 8-6 ​​to rotate, the moving frame 8-2 can also move up and down to adjust the height of the de-leaf driven wheel 8-6.

[0112] Specifically, each side of the movable frame 8-2 is provided with three de-leaf driven wheels 8-6. The power wheel set is located between the two lower de-leaf driven wheels 8-6. The first flexible transmission component 8-11 output from the power wheel set is connected upward to the middle de-leaf driven wheel 8-6 ​​and downward to the lower de-leaf driven wheel 8-6. That is, the de-leaf driving wheel 8-3 directly drives the two lower de-leaf driven wheels 8-6. For the upper de-leaf driven wheel 8-6, it is connected to the de-leaf rotating shaft 8-16 of the middle de-leaf driven wheel 8-6 ​​through the second flexible drive component.

[0113] The first flexible transmission component 8-11 and the second flexible transmission component 8-12 can be chains or belts.

[0114] Several rollers 8-10 are provided on both sides of the fixed frame 8-1. The rollers 8-10 are located on the rear side of the fixed frame 8-1, and the mounting frame of the movable frame 8-2 is in contact with the rollers 8-10. There are two sets of rollers 8-10. One set of rollers 8-10 is located on both sides of the top of the fixed frame 8-1, and the other set of rollers 8-10 is located on both sides of the middle of the fixed frame 8-1. A circumferential limiting groove is formed on the rollers 8-10, and the inner side of the mounting frame of the movable frame 8-2 is located in the limiting groove.

[0115] An upper limit stop 8-13 is provided at the upper part of the movable frame 8-2, and a lower limit stop 8-14 is provided at the lower part of the movable frame 8-2. Both the upper limit stop 8-13 and the lower limit stop 8-14 are lateral limit rods. When the movable frame 8-2 moves downward until the upper limit stop 8-13 contacts the top of the fixed frame 8-1, it reaches the lower limit position of the movable frame 8-2; when the movable frame 8-2 moves upward until the lower limit stop 8-14 contacts the roller 8-10 in the middle of the fixed frame 8-1, it reaches the upper limit position of the movable frame 8-2.

[0116] An extension sleeve 8-15 is fixed on the mounting frame. The extension sleeve 8-15 is perpendicular to the movable frame 8-2 and located on the rear side of the movable frame 8-2. The de-impeller shaft 8-16 of the de-impeller 8-5 passes through the extension sleeve 8-15. Bearings are provided at both ends of the de-impeller shaft 8-16, and the de-impeller shaft 8-16 is connected to the extension sleeve 8-15 through the bearings. The de-impeller 8-5 is located at the outer end of the de-impeller shaft 8-16, and the de-impeller driven wheel 8-6 ​​is located at the inner end of the de-impeller shaft 8-16. The distance between the de-impeller 8-5 and the movable frame 8-2 is determined by the length of the de-impeller shaft 8-16 and the extension sleeve 8-15.

[0117] like Figure 16 , Figure 17 As shown, the distance between the two sets of impellers 8-5 on both sides of the movable frame 8-2 gradually increases from bottom to top, and the two sets of impellers 8-5 are staggered in the front and rear directions of the movable frame 8-2.

[0118] When removing leaves from sugarcane, the lower leaf removal wheel 8-5 is used to remove leaves from the lower part of the sugarcane first, then the middle leaf removal wheel 8-5 is used to remove leaves from the middle part of the sugarcane, and finally the upper leaf removal wheel 8-5 is used to remove leaves from the upper part of the sugarcane. For the same sugarcane plant, the lower, middle and upper parts are treated for leaf removal in sequence. Since the lower part of the sugarcane is treated for leaf removal first, it will not affect the falling of the upper leaves, making it easier for the leaves to be discharged.

[0119] Meanwhile, since the leaves of the two rows of sugarcane plants will overlap to some extent, the minimum distance between one set of leaf-removing wheels 8-5 and the moving frame 8-2 should be greater than or equal to the maximum distance between the other set of leaf-removing wheels 8-5 and the moving frame 8-2. In this way, the leaf removal process of the plants on the left and right sides is carried out sequentially and follows the order of bottom to top. The two sets of leaf-removing wheels 8-5 of this invention first remove the leaves from the sugarcane plants on one side from bottom to top and then remove the leaves from the sugarcane plants on the other side from bottom to top, so that the removed leaves can fall smoothly to the ground.

[0120] The impeller 8-5 includes an impeller disc and flexible ropes mounted on it. These flexible ropes are typically multiple and arranged circumferentially. When the impeller 8-5 rotates rapidly, the flexible ropes possess a certain rigidity under centrifugal force. When they contact the leaves on the sugarcane plant, they remove the leaves by striking them. Because the flexible ropes retain a degree of flexibility, they can bend along the surface of the sugarcane plant upon contact, thus removing leaves from various locations on the sugarcane.

[0121] The front of the vehicle body of the present invention also includes a straightening device, which is used to straighten the sugarcane that has fallen into the space between the two rows of plants to both sides, so as to facilitate the passage of the vehicle body of the present invention. The straightening device can be a structure in the prior art, which will not be described in detail in the present invention.

Claims

1. A sugarcane field defoliation vehicle, characterized in that, This includes the vehicle body, running gear, power system, and de-cabin removal device; The power system includes an engine mounted on the vehicle body, a gearbox, and a clutch mounted on the gearbox. The clutch includes a power cylinder and outer and inner end plates located at both ends of the power cylinder. The engine drives the power cylinder to rotate around an axis via a transmission mechanism. The clutch is connected to the gearbox via a first transmission shaft and a second transmission shaft sleeved on the first transmission shaft. The first and second transmission shafts are connected to the gearbox as two power inputs to the gearbox. A working power output shaft and a traveling power output shaft are provided on the gearbox. The first transmission shaft is driven by the working power output shaft, and the second transmission shaft is driven by the traveling power output shaft. The walking system includes steering wheels mounted on the vehicle body for turning and track devices for driving movement, the track devices being connected to the walking power output shaft; The defoliation device is mounted on the vehicle body and connected to the working power output shaft, and is used to defoliate the sugarcane plants on both sides. The leaf removal device includes a fixed frame and a movable frame. The movable frame is driven by a lifting device to move vertically on the fixed frame. Power wheel sets are arranged on both sides of the fixed frame. The power wheel sets include a leaf removal drive wheel and guide wheels located on the upper and lower sides of the leaf removal drive wheel. The leaf removal shaft of the leaf removal drive wheel is the power input shaft. Several leaf removal wheels are arranged on the movable frame. The leaf removal wheels are divided into two groups. The two groups of leaf removal wheels are located on the mounting frames on both sides of the movable frame. Each group of leaf removal wheels is distributed up and down along the height direction of the movable frame. A coaxial leaf removal driven wheel is connected to the leaf removal shaft of the leaf removal wheel. A first flexible transmission member is attached to the leaf removal drive wheel and passes around the guide wheels in the upper and lower directions to connect with the adjacent leaf removal driven wheels above and below the power wheel set. Other leaf removal driven wheels on the same side are connected to the leaf removal shaft of the adjacent leaf removal wheel through a second flexible transmission member. The distance between the impellers in each group and the moving frame gradually increases from bottom to top, and the two groups of impellers are staggered in the front-back direction of the moving frame; the minimum distance between one group of impellers and the moving frame is greater than or equal to the maximum distance between the other group of impellers and the moving frame.

2. The sugarcane field defoliation vehicle according to claim 1, characterized in that, The track device includes a drive shaft, on which a track drive wheel is mounted. A swing sleeve is fitted onto the drive shaft, and a swing frame is connected to the lower part of the swing sleeve. Two track driven wheels are mounted on the swing frame. The track drive wheel and the two track driven wheels are arranged in a triangle. A track is mounted on the track drive wheel and the two track driven wheels. A tooth is provided on the track drive wheel. Tooth holes that mate with the tooth are evenly arranged along the length of the track on the center line of the track.

3. The sugarcane field defoliation vehicle according to claim 2, characterized in that, Two guide protrusions are provided between two adjacent tooth holes on the inner side of the track. The gap between the two guide protrusions is used to accommodate the disc of the track drive wheel. A groove is provided on the surface of the track driven wheel. The groove is used to accommodate the guide protrusions.

4. The sugarcane field defoliation vehicle according to claim 2, characterized in that, A first limiting hole and a second limiting hole are provided on the surface of the swing sleeve. The length of the first limiting hole in the circumferential direction of the swing sleeve is greater than the length of the second limiting hole in the circumferential direction of the swing sleeve. A fixed limiting pin and a movable limiting pin are provided on the vehicle body. The fixed limiting pin is inserted into the first limiting hole, and the movable limiting pin is inserted into the second limiting hole. The insertion or removal of the movable limiting pin is controlled by a control mechanism.

5. The sugarcane field defoliation vehicle according to claim 1, characterized in that, A first drive shaft is inserted through the center of the outer end plate and the inner end plate, and a second drive shaft is sleeved on the first drive shaft. The first drive shaft and the second drive shaft extend outward from the center of the inner end plate at the same time. A first active friction disc and a second active friction disc are slidably disposed within the power cylinder body and rotate together with the power cylinder body. A first passive friction disc, rotating synchronously with the first transmission shaft, is slidably connected to the first transmission shaft. A second passive friction disc, rotating synchronously with the second transmission shaft, is slidably connected to the second transmission shaft. The first active friction disc and the first passive friction disc are pressed together by a first elastic element, and the second active friction disc and the second passive friction disc are pressed together by a second elastic element. A separation control mechanism is provided on one side of the power cylinder body. The separation control mechanism is used to drive the sequential separation between the first active friction disc and the first passive friction disc, and between the second active friction disc and the second passive friction disc.

6. The sugarcane field defoliation vehicle according to claim 5, characterized in that, The separation control mechanism includes a separation sleeve fitted onto the extended section of the second drive shaft. A thrust bearing is provided at the end of the separation sleeve. Several first levers and second levers are arranged around the center on the inner end plate. The middle parts of the first levers and the middle parts of the second levers are respectively hinged to the inner end plate. A first pull rod is connected to the outer end of the first lever, and a second pull rod is connected to the outer end of the second lever. The first pull rod is connected to the first active friction disc, and the second pull rod is connected to the second active friction disc. The distances from the inner ends of the first levers and the second levers to the inner end plate are different. When the separation sleeve approaches the end face of the inner end plate, the thrust bearing contacts the first levers and the second levers in sequence.

7. The sugarcane field defoliation vehicle according to claim 5, characterized in that, A partition plate is provided inside the power cylinder, and the partition plate is fixedly connected to the inner wall of the power cylinder. The end of the second transmission shaft is connected to the inner hole of the partition plate through a bearing. The first elastic element contacts the partition plate, and the second elastic element contacts the inner end plate.

8. The sugarcane field defoliation vehicle according to claim 1, characterized in that, The mounting frame for mounting the impeller on the movable frame is located on both sides of the fixed frame. Power frames are provided on both sides of the fixed frame, and the power wheel set is set on the power frame. A vertical moving groove is opened on the mounting frame, the power frame extends to the mounting frame, and the power wheel set is located in the moving groove.

Images