A rotary tiller with a rotating function

Abstract

The present invention discloses a rotary tiller with a rotation function, which includes a chassis, a rotating seat, and a working part. The working part is used for farming operations and is installed on the rotating seat. The rotating seat is assembled with the chassis so as to be relatively rotatable and non-axially movable, and the chassis is used to drive the rotary tiller to travel; the rotating seat includes a rotating frame, a seat frame, and an operation console. An operation frame and an engine are respectively installed on the rotating frame; a seat frame and an operation console are respectively installed on the operation frame, and a seat is installed on the seat frame; a gear lever and buttons for operation, as well as a shift lever for controlling gearbox shifting, are arranged on the operation console; the chassis includes a chassis frame and a slewing bearing gear. The slewing bearing gear is installed on the chassis frame and meshes with a rotating gear in transmission. The rotating gear is installed on the output shaft of a rotating motor, and the rotating motor is installed on the rotating seat. The working part of the present invention can rotate relative to the chassis, is very flexible, and can well adapt to the tillage of narrow plots.

Description

Technical Field

[0001] The present invention relates to a rotary tiller, and particularly to a rotary tiller with a rotating function. Background Art

[0002] Rotary tillers are one of the main agricultural machines at present, mainly used for tilling and loosening the soil. At present, large contiguous and flat lands have been basically mechanized, while for small plots and mountain lands, due to rugged and narrow roads, large slopes and small areas, it is still very difficult to achieve mechanization. Most of them use micro-tillers for tillage, but micro-tillers have low efficiency, high labor intensity and shallow tillage depth, so they cannot fully meet the actual tillage needs. With the improvement of infrastructure construction level, rural areas have built tractor roads, thus solving the problem of the passage of rotary tillers. However, the small area of the land will make the operation of the rotary tiller very inconvenient, because most of the current rotary tillers adopt the method that the rotary tilling part cannot rotate relative to the traveling part, which involves problems such as the need to turn around and a large turning radius. Even if the volume of the rotary tiller is made smaller, the above problems still cannot be changed, so it is not suitable for tillage of small plots of land.

[0003] Therefore, solving the flexibility of the rotary tiller on small plots of land is an urgent technical problem to be solved at present. At the same time, the rotary tiller has loud noise and large vibration during operation. Coupled with long-term exposure to sunlight and rain outdoors, if used for a long time, the health of the operator will be affected. Especially in some dangerous areas, such as cliffs and steep slopes, there are also great safety hazards in manual driving. Therefore, it is also necessary to realize wireless control of the rotary tiller. At the same time, the current rotary tillers have a single function and basically can only till the land with rotary tiller blades. After planting, straws, and weeds during reclamation need to be specially crushed and returned to the field by a stubble cleaner. Obviously, purchasing a rotary tiller and a stubble cleaner at the same time will cause relatively high purchase and maintenance costs, and it is also inconvenient for tillage of small plots of land, because the tillage of such small plots of land mostly has few working hours and is generally done by one person. Therefore, increasing the functions of the rotary tiller is also a problem that needs to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a rotary tiller with a rotating function, whose working part can rotate relative to the chassis, thereby greatly improving flexibility.

[0005] To achieve the above object, the present invention provides a rotary tiller with a rotating function, including a chassis, a rotating seat, and a working part. The working part is used for agricultural tillage operations and is installed on the rotating seat. The rotating seat and the chassis are assembled so as to be relatively rotatable and non-axially movable. The chassis is used to drive the rotary tiller to travel;

[0006] The rotating seat includes a rotating frame, a seat frame, and an operation platform. An operation frame and an engine are respectively installed on the rotating frame, and the engine is used to provide power for the rotary tiller. A seat frame and an operation platform are respectively installed on the operation frame, and a seat is installed on the seat frame. A gear lever, buttons for operation, and a shift lever for controlling gear shifting of the gearbox are arranged on the operation platform.

[0007] The chassis includes a chassis frame and a slewing support gear. The slewing support gear is installed on the chassis frame and meshes with a rotating gear for transmission. The rotating gear is installed on the output shaft of a rotating motor, and the rotating motor is installed on the rotating seat.

[0008] As a further improvement of the present invention, the chassis further includes a tensioning member, a crawler, and a traveling motor. There are two crawlers, which are respectively installed on both sides of the chassis frame. Each crawler bypasses a plurality of crawler wheels, and two of the crawler wheels are respectively installed on a traveling power shaft and a crawler tensioning shaft. The traveling power shaft is connected to the output shaft of the traveling motor, and the traveling power shaft, the crawler tensioning shaft, and the traveling motor are all installed on the chassis frame. One end of the crawler tensioning shaft is hinged to the tensioning member. A tensioning screw is threadedly assembled inside the tensioning member. The tensioning screw passes through a tensioning force-receiving plate and abuts against the tensioning force-receiving plate. The tensioning force-receiving plate is installed on the chassis frame. A rotary joint is installed inside the slewing support gear. The stator of the rotary joint is assembled with the chassis frame, and the rotor is assembled with the rotating frame. The rotary joint is used to supply hydraulic oil at the rotating seat to the chassis.

[0009] As a further improvement of the present invention, the working part includes a protective cover, a lifting oil cylinder, and two shaft sleeves. First shaft sleeve flanges and second shaft sleeve flanges are respectively arranged at both ends of the shaft sleeves. The first shaft sleeve flanges of the two shaft sleeves are assembled with the protective cover by bolts, and the second shaft sleeve flanges of the two shaft sleeves are respectively assembled with the gearbox housing of the gearbox. The gearbox is installed on the rotating frame. The gearbox housing is hinged to the cylinder body end of the lifting oil cylinder, and the telescopic shaft of the lifting oil cylinder is hinged to the protective cover through a connecting pin shaft. Both shaft sleeves are assembled with the rotating frame through shaft seats, and the two shaft sleeves can rotate relative to the protective cover and / or the rotating frame.

[0010] Power is input through the gearbox input shaft of the gearbox and then output from the gearbox output shaft. The gearbox output shaft passes through one of the shaft sleeves and is assembled with a first transmission wheel. The gearbox output shaft is circumferentially rotatably assembled with the corresponding shaft sleeve. The first transmission wheel is connected and driven with a second transmission wheel through a transmission member. The second transmission wheel is installed on the power input end of the working shaft. The working shaft is circumferentially rotatably assembled relative to the protective cover, and a working member is installed on the working shaft. The working member is used for farming operations.

[0011] As a further improvement of the present invention, two notches are also provided on the protective cover. The two notches are respectively assembled with the first working flange and the second working flange. The first working flange and the second working flange are respectively installed on the working shaft and are assembled with the working shaft so as to be relatively circumferentially rotatable; the first working flange and the second working flange are respectively assembled with the protective cover through the first connecting bolt and the second connecting bolt.

[0012] As a further improvement of the present invention, the rotary tiller further includes a machine cover mechanism. The machine cover mechanism includes a machine cover, a hinge, a bumper beam, and a buckle. One end of the machine cover is hinged to the operating platform through the hinge, and a hook is installed at the other end. Moreover, a lighting lamp and a camera are installed at the end of the machine cover away from the operating platform. The lighting lamp is used for illuminating the front in the driving direction, and the camera is used for acquiring an image of the front in the driving direction; the bumper beam is installed on the rotating frame, the end of the machine cover is closely attached to the bumper beam, and the buckle is installed on the bumper beam. The buckle is used for assembling with the hook to fix the machine cover on the bumper beam.

[0013] The buckle includes a buckle seat installed on the bumper beam. The buckle seat is hinged to one end of the handle. A buckle rotating shaft is installed in the middle part of the handle. A U-shaped sleeve is installed on the buckle rotating shaft. The U-shaped sleeve hooks onto the hook.

[0014] As a further improvement of the present invention, the gearbox includes a gearbox housing. The gearbox housing is installed on the rotating frame. A gearbox input shaft, a gearbox intermediate shaft, and a gearbox output shaft are installed in the gearbox housing. The gearbox input shaft is used for inputting power. A shift shaft sleeve is axially slidable and non-rotatable relative to the circumferential direction on the gearbox input shaft. A high-speed driving gear and a low-speed driving gear are respectively installed on the shift shaft sleeve. A driving small gear, a driving large gear, a high-speed transmission gear, and a low-speed transmission gear are respectively installed on the gearbox intermediate shaft.

[0015] An output shaft sleeve is non-rotatable relative to the circumferential direction on the gearbox output shaft. An output large gear and an output small gear are respectively installed on the output shaft sleeve. The output large gear and the output small gear are respectively meshed and transmitted with the driving small gear and the driving large gear; the high-speed transmission gear can be meshed and transmitted with the high-speed driving gear, and the low-speed transmission gear can be meshed and transmitted with the low-speed driving gear.

[0016] When the high-speed transmission gear and the high-speed driving gear are meshed and transmitted, it is in the high-speed gear. When the low-speed transmission gear and the low-speed driving gear are meshed, it is in the low-speed gear. When the high-speed transmission gear and the high-speed driving gear are not meshed and the low-speed transmission gear and the low-speed driving gear are not meshed, it is in the neutral gear. Only one of these three gears appears.

[0017] As a further improvement of the present invention, the gear positions of the gearbox are controlled by a shifting mechanism. The shifting mechanism includes a shifting member and a shifting handle. The shifting member is installed inside the gearbox housing and is circumferentially rotatably assembled with the gearbox housing. A shifting swing arm is installed at one end of the shifting member inside the gearbox housing, and a shifting fork is installed on the shifting swing arm. The shifting fork is installed between the high-speed driving gear and the low-speed driving gear. When the shifting member rotates, it drives the shifting shaft sleeve to axially move through the shifting swing arm and the shifting fork to achieve shifting.

[0018] A shifting power plate is installed at one end of the shifting member away from the shifting swing arm. The two ends of the shifting power plate are respectively hinged to different shifting connecting members, and the two shifting connecting members are respectively assembled with one end of different cables.

[0019] As a further improvement of the present invention, the shifting mechanism further includes a shifting seat. The shifting seat is installed on the operating platform, and a toothed portion and a sunk groove are provided on the shifting seat. The sunk groove is circumferentially rotatably assembled with a reel. A reel bolt passes through the shifting seat and the reel and is assembled with a nut, so that the reel and the shifting seat cannot move relative to each other axially. The reel is fixedly assembled with the shifting housing, and a connecting column is installed on the reel. The other ends of the two cables are respectively assembled and wound with the connecting column. The connecting column is coaxially assembled with the reel.

[0020] The toothed portion is engaged with the locking teeth on the locking member. The locking member is installed in the locking installation groove of the shifting housing, and the middle portion of the locking member is hinged to the shifting housing through a locking rotating shaft. A torsion spring is installed between the locking member and the shifting housing, and the torsion spring applies a torsion force to the locking member to rotate towards the toothed portion.

[0021] One end of the locking member away from the locking teeth is in contact with or close to one end of a push rod. The other end of the push rod passes through the shifting handle and is assembled with a shifting button. One end of the shifting handle is installed inside the shifting housing, and a shifting ball is installed at the other end. One end of the shifting button is installed inside the shifting ball and is axially slidably assembled with it. A push rod hole is also provided on the shifting housing. A spring ring is installed on the portion of the push rod located inside the push rod hole. A limiting ring is installed at one end of the push rod hole close to the locking installation groove. A return spring is sleeved on the portion of the push rod located between the limiting ring and the spring ring, and the return spring applies an elastic force to the push rod to push it towards the shifting button.

[0022] As a further improvement of the present invention, the input shaft of the gearbox is driven to rotate through a transmission mechanism. The transmission mechanism includes a first transmission belt, a pulley assembly, a fixed clutch seat, a movable clutch seat, a second clutch lever, a clutch member, and a first clutch lever. One end of the first clutch lever is assembled with the clutch member, and a clutch pedal is installed at the other end. The clutch member is hinged to one end of the second clutch lever, and the other end of the second clutch lever is hinged to the movable clutch seat. The clutch member is rotatably installed on a clutch seat bracket, and the clutch seat bracket is installed on a rotating frame. The fixed clutch seat and the movable clutch seat are both sleeved on the input shaft of the gearbox, and the fixed clutch seat is fixed relative to the rotating frame.

[0023] The movable clutch seat is rotatably sleeved on the input shaft of the gearbox. Fixed inclined surfaces and movable inclined surfaces are respectively provided on the end faces of the fixed clutch seat and the movable clutch seat in contact with each other, and the distances between the fixed inclined surface and the movable inclined surface in the axial direction of the input shaft of the gearbox are different.

[0024] The pulley assembly includes a pulley housing. The pulley housing is connected to the driving pulley through a first transmission belt to form a belt transmission mechanism, and the driving pulley is installed on the output shaft of the engine. A transmission disk and a friction disk are respectively installed inside the pulley housing. The convex block of the transmission disk is engaged in the groove of the pulley housing and cannot rotate circumferentially relative to the pulley housing. The friction disk is axially slidable and rotatably sleeved on the input shaft of the gearbox. The transmission disk does not contact the input shaft of the gearbox, and the pulley housing is rotatably sleeved on the input shaft of the gearbox.

[0025] There are two transmission disks, which are respectively located at both ends of the friction disk. The transmission disk near the gearbox is assembled with one end of the clutch push rod. The other end of the clutch push rod passes through the pulley housing and is assembled with a clutch push rod head. A clutch spring is sleeved on the part of the clutch push rod located between the transmission disk and the pulley housing to which it is assembled. The clutch spring applies an elastic force to press the clutch push rod against the friction disk so that the transmission disk and the friction disk are pressed together for transmission in the initial state. The transmission disk far from the gearbox is fixed on the pulley housing.

[0026] The part of the clutch push rod located between the pulley housing and the clutch push rod head is engaged in a clutch fork groove and is slidably assembled with it. The clutch fork groove cannot pass through the clutch push rod head. The clutch fork groove is provided at one end of a clutch rotating rod. The other end of the clutch rotating rod is pressed against the end face of a face bearing. The middle part of the clutch rotating rod is hinged to the pulley housing through a rotating rod pin. The face bearing is installed on the movable clutch seat.

[0027] As a further improvement of the present invention, the driving pulley is also connected to a hydraulic pump pulley through a second transmission belt to form a belt drive mechanism, and the hydraulic pump pulley is installed on the drive shaft of the hydraulic pump; the hydraulic pump is installed on a pump bracket, and a pump bracket groove is provided on the pump bracket. A pump bracket bolt passes through the pump bracket groove and is assembled with the rotary bracket. The pump bracket groove can move along the pump bracket bolt, and after moving in place, the pump bracket bolt is tightened to fix the pump bracket on the rotary bracket;

[0028] One side of the pump bracket is pressed against one end of a jacking screw, and the jacking screw passes through a jacking screw bracket and is threadedly engaged and assembled with it. The jacking screw bracket is fixed on the rotary bracket.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The working part of the present invention can rotate relative to the chassis through the rotating seat, and there is no need to turn around in some narrow working scenarios, which is very flexible and can well adapt to the tillage of narrow plots. In addition, the present invention can be remotely controlled, thereby greatly reducing the labor intensity of the operator, improving comfort and safety.

[0031] 2. The engine cover mechanism of the present invention covers the engine through the engine cover, thus effectively preventing the operator from directly contacting the engine and causing burns. Moreover, the engine cover is integrated with a lighting lamp and a camera, which not only makes the structure more compact but also can obtain the image below through the camera during remote control, so as to facilitate the operator to remotely drive the rotary tiller. After adding the locking component, it can be locked and supported when the engine cover is fully opened, and when closing, the engine cover can be directly closed, which is very convenient to use.

[0032] 3. The working part of the present invention adopts an integrated design of a working shaft and a working piece, which can not only achieve quick replacement, but also the working part and the working piece for replacement are small in volume and light in weight, which is very convenient to carry, and one person can complete the replacement operation.

[0033] 4. The shifting mechanism of the present invention uses two cables to control the rotation of the shifting part to realize the switching of high speed, low speed and neutral gear, with a simple structure and convenient layout. In addition, the two cables are wound and released by the rotation of a reel. The reel is driven to rotate by a shifting handle, which is not only labor-saving but also can be locked by engaging with the tooth part of a locking piece to effectively maintain the stability of the gear position.

[0034] 5. The transmission mechanism of the present invention drives the pulley assembly by using the first transmission belt through the transmission mechanism, and the clutch pedal controls the rotation of the movable clutch seat to control the separation of the friction disc and the transmission disc, thereby cutting off the power transmission between the pulley housing and the input shaft of the gearbox; after releasing the clutch pedal, the friction disc and the transmission disc resume pressing to connect the power between the pulley housing and the input shaft of the gearbox. This design is not only simple in structure and convenient in operation, but also can control the clutch with a small force, and large torque transmission can be achieved between the friction disc and the transmission disc, which can meet the large torque requirements of the rotary tiller. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figures 1 - 3 is a schematic structural diagram of the present invention;

[0036] Figures 4 - 9 is a partial structural schematic diagram of the present invention;

[0037] Figure 10 is a structural schematic diagram of the working part 300 (in the state of installing rotary tiller blades);

[0038] Figures 11 - 13 is a structural schematic diagram of the engine hood mechanism 400, wherein Figure 13 is a structural schematic diagram after the engine hood 410 is opened;

[0039] Figures 14 - 15 is a structural schematic diagram of the locking assembly 460, wherein Figure 15 is a sectional view at the central plane where the axis of the locking sleeve 482 is located;

[0040] Figure 16 is a structural schematic diagram at the buckle 450 and the hook 411;

[0041] Figures 17 - 18 is a structural schematic diagram at the shift lever 610;

[0042] Figure 19 is a partial structural schematic diagram at the shift lever 610;

[0043] Figure 20 is a sectional view at the central plane where the axis of the push rod 660 is located at the shift lever 610;

[0044] Figures 21 - 22 is a structural schematic diagram at the locking member 603 and the tooth engaging part 621;

[0045] Figures 23 - 24 is a structural schematic diagram at the shifting member 680;

[0046] Figures 25 - 26 is a structural schematic diagram at the transmission mechanism;

[0047] Figures 27 - 30It is a schematic structural diagram of a partial transmission mechanism and the gearbox 500 (excluding the gearbox housing 510), where Figure 29 is a cross-sectional view taken along the central plane where the axis of the input shaft 560 of the gearbox is located;

[0048] Figure 31 is a schematic structural diagram of the pulley assembly 760. Embodiment

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0051] Refer to Figures 1 - 9 , the rotary tiller of this embodiment includes a chassis 100, a rotating seat 200, and a working part 300. The working part 300 is installed on the rotating seat 200, and the rotating seat 200 and the chassis 100 are relatively rotatably assembled; the chassis 100 includes a chassis frame 110, a tensioning member 120, a crawler 130, a traveling motor 140, a push shovel 150, and a slewing support gear 160. The slewing support gear 160 is installed on the chassis frame 110 and the slewing support gear 160 meshes with and drives the rotating gear 217. The rotating gear 217 is installed on the output shaft of the rotating motor 213, and the rotating motor 213 is installed on the rotating seat 200. During use, the rotating motor 213 drives the rotating gear 217 to rotate, thereby driving the entire rotating seat 200 to rotate along the slewing support gear 160. In this embodiment, a slewing support bearing is also installed between the rotating seat 200 and the chassis frame 110. This is the structure of the current mainstream slewing platform, and the rotating structure of an existing excavator can be directly adopted. During use, by driving the working part 300 to rotate through the rotating seat 200, it can flexibly adapt to various working conditions. After operating in a narrow area, there is no need to turn around, and the rotating seat 200 can be directly rotated, which is very convenient. Therefore, it can flexibly adapt to various narrow tillage scenarios.

[0052] There are two crawlers 130, which are respectively installed on both sides of the chassis frame 110. Each crawler 130 bypasses a plurality of crawler wheels, and two of the crawler wheels are respectively installed on the traveling power shaft 132 and the crawler tensioning shaft 131. The traveling power shaft 132 is connected to the output shaft of the traveling motor 140. The traveling power shaft 132, the crawler tensioning shaft 131, and the traveling motor 140 are all installed on the chassis frame 110. One end of the tensioning member 120 is hinged to the crawler tensioning shaft 131. A tensioning screw 121 is assembled in the tensioning member 120 by screw thread. The tensioning screw 121 passes through the tensioning force-bearing plate 111 and abuts against the tensioning force-bearing plate 111. The tensioning force-bearing plate 111 is installed on the chassis frame 110. During use, by adjusting the telescopic length of the tensioning screw 121 relative to the tensioning member 120, the tensioning force of the crawler 130 can be adjusted, so as to ensure the effective tensioning of the crawler. The traveling motor 140 is driven to rotate hydraulically to drive the crawler 130 to run, so as to realize the walking of the whole rotary tiller. Turning and U-turn can be realized through the rotational speed difference between the two crawlers. However, during tillage, U-turn in the soil should be avoided as much as possible, because this operation will extrude the soil outwards, causing a pit to form at the U-turn position, which not only affects the operation but also affects the tillage of this part of the land.

[0053] See Figure 9 , a push shovel arm 151 is provided on the push shovel 150. The push shovel arm 151 is hinged to the chassis frame 110, and the push shovel 150 is hinged to the telescopic shaft of the push shovel cylinder 152. The cylinder block of the push shovel cylinder 152 is hinged to the chassis frame 110. During use, by driving the telescopic shaft of the push shovel cylinder 152 to expand and contract, the lifting of the push shovel 150 can be controlled (rotating around the hinge point between the push shovel arm 151 and the chassis frame 110), so as to use the push shovel 150 to push away sundries.

[0054] See Figures 1 - 9 , the rotating seat 200 includes a rotating frame 210, a seat frame 220, an operating platform 230, and a sunshade 240. An operating frame 211, a shift case 212, a rotating motor 213, an engine 214, and a rotating joint 215 are respectively installed on the rotating frame 210. The rotating joint 215 is used to supply oil to the chassis 100. During use, the rotating seat 200 provides pressurized hydraulic oil to the chassis 100 through the rotating joint 215, and when the rotating seat 200 rotates, the rotating joint 215 rotates synchronously to keep the hydraulic oil pipeline connected.

[0055] A seat frame 220, an operation console 230, a sunshade 240, and a gearshift housing 212 are respectively installed on the operation frame 211. A seat facilitating the operator to get off the seat and a seat frame lamp 221 for lighting are installed on the seat frame 220. A gear lever for operation, a receiver 231 for receiving wireless signals, and a gearshift handle 610 for controlling the gearshift of the gearbox 500 are arranged on the operation console 230. The sunshade 240 is installed on the seat frame 220 or the operation frame 211 to protect the operator from wind and rain. The gearshift housing 212 covers the outside of the gearshift member 680 to protect the gearshift member 680. In this embodiment, the gearbox 500 has three gears: high gear, low gear, and neutral gear. During use, wireless communication can be performed between the remote controller and the receiver 231 to obtain the operation data of the rotary tiller and the images of the camera. Then, control instructions can be sent to the controller (industrial computer or PLC) of the rotary tiller through the remote controller. The controller controls the operation of the corresponding parts according to the instructions, such as forward movement, backward movement, turning, traveling speed (throttle, brake), rotation of the rotating seat, lifting of the working part, lifting of the push shovel, opening and closing of the lighting lamp, opening and closing of the seat frame lamp, etc. In this way, remote control can be realized, the labor intensity of the operator can be reduced, and the comfort and safety guarantee of the operator can be improved.

[0056] See Figures 1 - 10 , the working part 300 is used for tillage operations, such as plowing and stubble removal. The working part 300 includes a protective cover 310, a lifting oil cylinder 360, and two sleeve shafts 370. First sleeve flange 371 and second sleeve flange 372 are respectively arranged at both ends of the sleeve shaft 370. The first sleeve flanges 371 of the two sleeve shafts 370 are assembled with the protective cover 310 through bolts. The second sleeve flanges 372 of the two sleeve shafts 370 are respectively assembled with the gearbox housing 510 of the gearbox 500. The gearbox 500 is installed on the rotary frame 211. The gearbox housing 510 is hinged to the cylinder end of the lifting oil cylinder 360. The telescopic shaft of the lifting oil cylinder 360 is hinged to the protective cover 310 through a connecting pin shaft 361. Both sleeve shafts 370 are assembled with the rotary frame 211 through shaft seats 201. The two sleeve shafts 370 can rotate relative to the protective cover 310 and / or the rotary frame 211. Thus, when the lifting oil cylinder 360 drives its telescopic shaft to extend and retract, it can drive the protective cover 310 to rotate around the sleeve shaft 370, so as to adjust the angle of the protective cover 310 relative to the rotary frame 211 to adjust the working state of the working part.

[0057] The gearbox 500 inputs power through the gearbox input shaft 560 and then outputs power from the gearbox output shaft 380. The gearbox output shaft 380 passes through one of the shaft sleeves 370 and is assembled with the first transmission wheel 341. The gearbox output shaft 380 is rotatably assembled with the corresponding shaft sleeve 370. The first transmission wheel 341 is connected and driven to the second transmission wheel 342 through the transmission member 340. The second transmission wheel 342 is installed on the power input end 322 of the working shaft 320. In this embodiment, the first transmission wheel 341 and the second transmission wheel 342 can be sprockets or belt pulleys, and correspondingly, the transmission member 340 can be a chain or a belt.

[0058] The transmission member 340 is tensioned by a tensioning wheel 343. The tensioning wheel 343 is installed on the tensioning plate 350. A tensioning plate groove 351 is provided on the tensioning plate 350. The tensioning plate 350 is assembled with the protective cover 310 through the first tensioning bolt 304. The second tensioning bolt 305 passes through the tensioning plate groove 351 and is assembled with the protective cover 310. The tensioning plate 350 can rotate around the first tensioning bolt 304, so that the tensioning plate groove 351 rotates outside the second tensioning bolt 305, and then tightening the first tensioning bolt 304 and the second tensioning bolt 305 can fix the tensioning plate 350 on the protective cover 310. This design is mainly to facilitate the tensioning and loosening of the transmission member, so as to facilitate the replacement of subsequent workpieces.

[0059] The transmission member 340 is covered with a transmission cover 350. The transmission cover 350 is installed on the protective cover 310 and is used to shield the transmission member to improve safety.

[0060] Two notches 311 are further provided on the protective cover 310. The two notches 311 are respectively assembled with the first working flange 331 and the second working flange 332. The first working flange 331 and the second working flange 332 are respectively installed on the working shaft 320 and are assembled with the working shaft 320 so as to be relatively rotatable in a circumferential direction. A working member 321 is installed on the working shaft 320. The working member 321 is used for performing specific operations. For example, in this embodiment, the working member 321 is selected as a rotary tillage blade, and rotary tillage operations can be performed at this time; when the working member 321 is selected as a stubble removal blade, stubble removal and straw crushing and returning to the field operations can be performed. Specifically, in this embodiment, the first working flange 331 is installed on the protective cover 310 through the first connecting bolt 301, and the second working flange 332 is installed on the protective cover 310 through the second connecting bolt 302. The working shaft 320 and the working member 321 are of an integral structure. When replacement is needed, first loosen the transmission member 340, pull out the second transmission wheel 342 from the power input end 322, then remove the first connecting bolt 301 and the second connecting bolt 302, and then pull out the first working flange 331 and the second working flange 332 from the notches 311 to disassemble the working shaft 320 and the working member 321. Then install the working shaft 320 and the working member 321 that need to be replaced, then install and fix the first working flange 331 and the second working flange 332, and finally install the second transmission wheel 342 back and tension the transmission member 340. This design is simple and fast to replace, and only replaces the first working flange 331, the second working flange 332, the working shaft 320, and the working member 321 as an assembly. It is not only simple to operate, but also convenient to carry. The overall weight is not large, and one person can complete the replacement, thus meeting the requirements of one-person operation and one-person multi-type operation of the current small rotary tillage machine.

[0061] Preferably, the second working flange 332 is further assembled with a reinforcing plate 333 through a third connecting bolt 303. The reinforcing plate 333 is located outside the end of the transmission cover 350 close to the notch 311. This design is mainly because during operation, the notch 311 will come into contact with soil, straw, stones, etc., resulting in relatively large friction. If it directly contacts and rubs against the transmission cover, it will cause excessive wear, damage or deformation of the transmission cover. Adding the reinforcing plate 333 can effectively solve this problem.

[0062] See Figures 1 - 9 、 Figures 11 - 15 , since high temperature will be generated outside the engine 214 during operation, it is very easy to cause scalding if not shielded. Moreover, during actual use, it is also necessary to select the lighting lamp 431 to illuminate the front according to the lighting conditions. At the same time, in order to meet the need of remote control, a camera 432 and the like need to be installed for assistance. Therefore, in this embodiment, the engine cover mechanism 400 is added to solve the above problems.

[0063] The hood mechanism 400 includes a hood 410, a hinge 420, a bumper beam 440, and a buckle 450. One end of the hood 410 is hinged to the operation console 230 through the hinge 420, and a hook 411 is installed at the other end. Moreover, a lighting lamp 431 and a camera 432 are installed at the end of the hood 410 away from the operation console 230. The lighting lamp 431 is used to illuminate the front in the driving direction, and the camera 432 is used to obtain an image of the front in the driving direction. The seat frame lamp 221 is used to illuminate the operation console 230 to facilitate the operator to identify operation rods, buttons, etc.

[0064] The bumper beam 440 is installed on the rotating frame 211, and the end of the bumper beam 440 away from the operation console 230 protrudes from the hood 410 and the rotating frame 211. This design is mainly for anti-collision to avoid direct impact on the hood 410, the rotating frame 211, and the engine 214, causing unnecessary losses. The end of the hood 410 is pressed tightly against the bumper beam 440. The buckle 450 is installed on the bumper beam 440, and the buckle 450 is used to assemble with the hook 411 to fix the hood 410 on the bumper beam 440.

[0065] The buckle 450 includes a buckle seat 451 installed on the bumper beam 440. The buckle seat 451 is hinged to one end of a handle 452. A buckle rotating shaft 454 is installed in the middle part of the handle 452. A U-shaped sleeve 453 is installed on the buckle rotating shaft 454. The U-shaped sleeve 453 hooks onto the hook 411. See Figure 16 , when it is necessary to open the buckle, rotate the handle 452 in the direction away from the buckle seat 451 so that the U-shaped sleeve 453 moves upward and exits the hook 411. When it is necessary to hook tightly again, hook the U-shaped sleeve onto the hook 411, and rotate the handle 452 towards the buckle seat 451 to Figure 16 the locked state to achieve locking.

[0066] When in use, the engine cover 410 needs to be opened to perform operations such as refueling the engine and replenishing engine oil. If there is no locking structure after opening, additional support is required to keep the engine cover open, which is obviously troublesome and the support may not be stable. And setting up a support like a car tailgate will result in high costs and difficult layout. Therefore, a design that can automatically lock without unnecessary operations and can directly rotate the engine cover to close when closing the engine cover is needed. For this, the locking component 460 is designed in this embodiment. The locking component 460 includes a locking fixed plate 461, a locking plate 462, a locking sliding shaft 481, a locking screw sleeve 482, and a locking spring 401. The locking fixed plate 461 is installed on the operation table 230. One end of the locking sliding shaft 481 is installed on the locking plate 462, and the other end is inserted into the locking screw sleeve 482 and is axially slidably assembled with it. The locking screw sleeve 482 is threadedly assembled with the locking fixed plate 461. The locking spring 401 is sleeved on the part of the locking sliding shaft 481 between the locking plate 462 and the locking screw sleeve 482, and the locking spring 401 applies a thrust to the locking plate 462 away from the locking fixed plate 461. When the engine cover is closed, the top surface of the locking plate 462 presses tightly against the inner wall of the engine cover 410. When the engine cover 410 is opened, the engine cover 410 gradually moves away from the locking plate 462, and the locking plate 462 moves upward through the locking spring 401 to keep pressing tightly against the edge of the engine cover 410 until the engine cover 410 rotates to be parallel to the operation table 230 (rotates 90°). At this time, when the engine cover 410 is released, the locking plate 462 will apply a damping force to the engine cover 410 to prevent its reverse rotation, and this force is parallel to the engine cover, thus forming a self-locking angle. Therefore, effective support for the engine cover can be achieved. Of course, the locking screw sleeve 482 can be rotated to adjust the compression amount of the locking spring 401 to adjust the supporting force for the engine cover. When it is necessary to close the engine cover 410, only need to drive the engine cover to rotate towards the anti-collision beam 440 at one end of the hook 411, so that the engine cover overcomes the elastic force of the locking spring 401 and drives the locking plate 462 to move downward, then the unlocking and reverse rotation of the engine cover can be realized. This operation is very convenient, and can effectively support the engine cover. In addition, the structure is simple and the cost increase is very small, which is very practical.

[0067] Preferably, a friction plate 463 is installed on the end surface of the locking plate 462 away from the locking fixed plate 461. The friction plate 463 is in contact with and rubs against the engine cover, and the friction plate 463 is made of a wear-resistant material with a low friction coefficient, such as polytetrafluoroethylene. This design mainly considers that the wear of the locking plate 462 and the engine cover 410 during the opening and closing process of the engine cover is not small, and the friction between the two needs to be reduced as much as possible. When polytetrafluoroethylene is selected, polytetrafluoroethylene itself is wear-resistant and has self-lubricating properties. Therefore, the wear of the two can be effectively reduced, and the friction plate 463 can be quickly replaced, so the maintenance is also relatively convenient.

[0068] Preferably, the locking plate 462 is also assembled with one end of the locking guide shaft 470, and the other end of the locking guide shaft 470 passes through the locking fixing plate 461 and is axially slidably assembled therewith. This design is mainly to increase the stability of the movement of the locking plate 462 relative to the locking fixing plate 461, thereby ensuring the locking performance of the locking plate.

[0069] Preferably, a reinforcing strip 412 is installed at the edge of the machine cover 410. The reinforcing strip 412 can be independent and fixed on the machine cover 410 by means of gluing, welding, screw fixing, etc., or obtained by curling the edge of the machine cover. This design can increase the strength of the machine cover on the one hand, and reduce the wear of the edge of the machine cover and extend the service life of the machine cover on the other hand.

[0070] See Figures 1 - 9 、 Figure 22 、 Figures 25 - 30 As shown in, the gearbox 500 includes a gearbox housing 510. The gearbox housing 510 is installed on the rotary frame 211. A gearbox input shaft 560, a gearbox intermediate shaft 530, and a gearbox output shaft 380 are installed in the gearbox housing 510. The gearbox input shaft 560 is used for inputting power, and a shift sleeve 550 is axially slidable and non-rotatable relative to the circumference on the gearbox input shaft 560. A high-speed driving gear 551 and a low-speed driving gear 552 are respectively installed on the shift sleeve 550. A transmission pinion 531, a transmission large gear 532, a high-speed transmission gear 541, and a low-speed transmission gear 542 are respectively installed on the gearbox intermediate shaft 530. An output sleeve 520 is non-rotatable relative to the circumference on the gearbox output shaft 380. An output large gear 521 and an output small gear 522 are respectively installed on the output sleeve 520. The output large gear 521 and the output small gear 522 are respectively meshed with the transmission pinion 531 and the transmission large gear 532 for transmission. This design mainly ensures the output torque and output stability. The high-speed transmission gear 541 can be meshed with the high-speed driving gear 551 for transmission, and the low-speed transmission gear 542 can be meshed with the low-speed driving gear 552 for transmission. When the high-speed transmission gear 541 and the high-speed driving gear 551 are meshed for transmission, it is in the high-speed gear. When the low-speed transmission gear 542 and the low-speed driving gear 552 are meshed, it is in the low-speed gear. When the high-speed transmission gear 541 and the high-speed driving gear 551 are not meshed and the low-speed transmission gear 542 and the low-speed driving gear 552 are not meshed, it is in the neutral gear. These three gears appear alternatively. During rotary tillage, since the rotary tillage blade requires low speed and high torque, the low-speed gear is selected. During the stubble removal state, since high speed and relatively low torque are required, the high-speed gear is selected. When not in use or starting, it enters the neutral gear. This design flexibly adapts to different working conditions of rotary tillage and stubble removal, providing a basis for the function expansion and economy of this embodiment.

[0071] See Figures 1 - 9 、 Figures 17 - 24, the gear position of the gearbox is controlled by a shifting mechanism, which includes a shifting member 680, a shifting handle 610, and a shifting seat 620. The shifting member 680 passes through the shifting cover 602 and is installed inside the gearbox housing 510, and is circumferentially rotatably assembled with the gearbox housing 510. A shifting swing arm 681 is installed at one end of the shifting member 680 inside the gearbox housing 510, and a shifting fork 682 is installed on the shifting swing arm 681. The shifting fork 682 is installed between the high-speed driving gear 551 and the low-speed driving gear 552. When the shifting member 680 rotates, it can drive the shifting shaft sleeve 550 to axially move through the shifting swing arm 681 and the shifting fork 682 to achieve shifting.

[0072] A shifting power plate 683 is installed at one end of the shifting member 680 away from the shifting swing arm 681. The two ends of the shifting power plate 683 are respectively hinged to different shifting connecting members 671, and the two shifting connecting members 671 are respectively assembled with one end of different cables 670. During use, the movement of the two cables 670 can drive the shifting member 680 to rotate, and controlling the rotation angle of the shifting member 680 can achieve the switching of three gear positions. The cable 670 passes through the cable conduit 691 to realize the guiding of the cable 670. The cable conduit 691 is installed on the cable conduit bracket 690, and the cable conduit bracket 690 is installed on the rotating bracket 211.

[0073] The shifting seat 620 is installed on the operating platform 230, and a toothed part 621 and a sunk groove 622 are provided on the shifting seat 620. The sunk groove 622 is circumferentially rotatably assembled with the reel 630. The reel bolt 650 passes through the shifting seat 620 and the reel 630 and is assembled with a nut so that there is no relative axial movement between the reel 630 and the shifting seat 620. The reel 630 is fixedly assembled with the shifting housing 640, and a connecting column 631 is installed on the reel 630. The other ends of the two cables 670 are respectively assembled and wound with the connecting column 631, and the connecting column 631 is coaxially assembled with the reel 630. During use, by rotating the reel 630, one cable 670 can be wound and the other cable 670 can be released, thereby driving the shifting member 680 to rotate for shifting.

[0074] The toothed part 621 is engaged and assembled with the locking teeth 604 on the locking member 603. The locking member 603 is installed in the locking installation groove 643 of the shifting housing 640, and the middle part of the locking member 603 is hinged to the shifting housing 640 through a locking rotating shaft 605. A torsion spring is installed between the locking member 603 and the shifting housing 640, and the torsion spring applies a torsion force to the locking member 603 to rotate towards the toothed part 621 to ensure that the locking teeth 604 remain engaged and assembled with the toothed part 621. A limiting rod 644 is also installed in the locking installation groove 643, and the limiting rod 644 is used to limit the maximum rotation angle of the locking member 603 towards the toothed part 621.

[0075] One end of the locking member 603 away from the locking teeth 604 is in contact with or close to one end of the push rod 660. The other end of the push rod 660 passes through the shift handle 610 and is assembled with the shift button 661. One end of the shift handle 610 is inserted into the shift housing 640, and a shift ball 612 is installed at the other end. One end of the shift button 661 is inserted into the shift ball 612 and is axially slidably assembled therewith. A push rod hole 641 is further provided on the shift housing 640. A spring ring 662 is installed on the part of the push rod 660 located in the push rod hole 641. A limit ring 642 is installed at one end of the push rod hole 641 close to the locking installation groove 643. A return spring 601 is sleeved on the part of the push rod 660 located between the limit ring 642 and the spring ring 662. The return spring 601 applies an elastic force to the push rod 660 to push it towards the shift button 661.

[0076] Preferably, the shift handle 610 is assembled with the shift housing 640 by threads, and a limit nut 611 is screwed and installed on the end of the shift handle 610 close to the shift housing 640. During use, the length of the shift handle 610 inserted into the shift housing 640, that is, the depth of the shift handle 610 inserted into the shift housing 640, can be adjusted through the limit nut 611, which is also to control the displacement amount of the push rod 660 that can move towards the locking installation groove 643. This displacement amount can determine the rotation angle of the part of the locking member 603 away from the tooth part 621 during unlocking.

[0077] In this embodiment, when the shift handle is in Figure 18 state, it is in neutral gear; when the shift handle is in Figure 17 state, it is in high gear or low gear. When changing gears, first hold one end of the shift handle 610 close to the shift ball 612 with the hand, and then press the shift button 661 with the thumb to drive the shift button 661 and the push rod 660 to move towards the locking member 603 against the elastic force of the return spring 601 until the push rod 660 pushes the locking member 603 to rotate away from the tooth part 621 against the torsion force of the torsion spring ( Figure 20 rotates upward in), until the locking teeth 604 leave the tooth part 621. At this time, the locking state of the shift handle 610 disappears. Then, drive the reel 630 to rotate through the shift handle 610 to drive the two cables 670 to move, and the two cables 670 drive the shift member 680 to rotate to achieve gear shifting. After the gear shifting is completed, release the shift button 661, and the return spring 601 drives the push rod 660 to move back towards the shift button 661. The locking member 603 reversely resets through the torsion force of the torsion spring until the locking teeth 604 are engaged and locked with the corresponding tooth part 621. This design structure is relatively simple, and the cable as a shift power method can achieve long-distance drive, and combined with the flexible characteristics of the cable, it also has the characteristic of being easy to arrange.

[0078] See Figures 1 - 9 、Figures 25 - 31 The input shaft 560 of the gearbox is driven to rotate through a transmission mechanism, which includes a first transmission belt 701, a pulley assembly 760, a fixed clutch seat 750, a movable clutch seat 740, a second clutch lever 730, a clutch member 720, and a first clutch lever 710. One end of the first clutch lever 710 is assembled with the clutch member 720, and a clutch pedal 711 is installed at the other end. The clutch member 720 is hinged to one end of the second clutch lever 730, and the other end of the second clutch lever 730 is hinged to the movable clutch seat 740. The clutch member 720 is rotatably installed on a clutch seat bracket 790, and the clutch seat bracket 790 is installed on the rotating frame 211. Both the fixed clutch seat 750 and the movable clutch seat 740 are sleeved on the input shaft 560 of the gearbox. The fixed clutch seat 750 is fixed relative to the rotating frame 211 (in this embodiment, the fixed clutch seat 750 is installed on the gearbox housing 510). A clutch torsion spring is installed between the clutch member 720 and the clutch seat bracket 790, and the clutch torsion spring applies a torsion force to the clutch member 720 to rotate towards the second clutch lever 730, so that the clutch pedal is in the highest position in the initial state. In this embodiment, the rotating shaft where the second clutch lever 730 is hinged to the movable clutch seat 740 is slightly longer, so that the movable clutch seat 740 can axially move relative to the second clutch lever 730 along the axial direction of the rotating shaft (the rotating shaft is parallel to the input shaft of the gearbox). This design enables the movable clutch seat 740 to move axially along the rotating shaft to adapt to its axial displacement when moving, thus avoiding the problem that the movable clutch seat 740 cannot move axially. After the movable clutch seat 740 is reset, the clutch spring 706 drives the clutch push rod 780 to move away from the movable clutch seat 740, so as to push the end face bearing 703 and the movable clutch seat 740 to move axially in the reverse direction and reset through the clutch turning rod 770. In this embodiment, the axial displacement of the movable clutch seat 740 is very small, as long as the pressure between the friction disc and the transmission disc can be reduced to a level where the input shaft of the gearbox cannot be driven to rotate. Therefore, the design that the movable clutch seat 740 and the rotating shaft can move relative to each other does not affect stability, and the resulting wear is also within an acceptable range. Of course, the hinged joints between the second clutch lever 730 and the movable clutch seat 740, and between the second clutch lever 730 and the clutch member 720 can both be set to be able to axially move a certain distance along the rotating shaft, that is, the second clutch lever 730 can swing (a combined action of axially moving along the rotating shaft and pulling the movable clutch seat 740 to rotate), so as to flexibly adapt to the axial movement of the movable clutch seat 740.

[0079] The movable clutch seat 740 is circumferentially rotatably sleeved on the gearbox input shaft 560. When the clutch member 720 rotates, it can drive the second clutch lever 730 to move, and the second clutch lever 730 drives the movable clutch seat 740 to rotate circumferentially. On the end faces where the fixed clutch seat 750 and the movable clutch seat 740 are in contact with each other, a fixed inclined surface 751 and a movable inclined surface 741 are respectively provided, and the distances between the fixed inclined surface 751 and the movable inclined surface 741 in the axial direction of the gearbox input shaft are different. When the movable clutch seat 740 rotates, since the fixed clutch seat 750 does not move, the movable clutch seat 740 will be driven to move along the axis of the gearbox input shaft 560 towards the pulley assembly 760 through the cooperation of the fixed inclined surface 751 and the movable inclined surface 741.

[0080] The pulley assembly 760 includes a pulley housing 764. The pulley housing 764 is connected to the driving pulley through a first transmission belt 701 to form a belt transmission mechanism. The driving pulley is installed on the output shaft of the engine 214, so that the pulley housing 764 can be driven to rotate by the engine 214. A transmission disc 761 and a friction disc 762 are respectively installed inside the pulley housing 764. Transmission disc bumps are provided on the transmission disc 761, and the transmission disc bumps are snapped into the pulley housing grooves 763 so that the transmission disc 761 cannot rotate circumferentially relative to the pulley housing 764; the friction disc 762 is axially slidable and circumferentially non-rotatable and is sleeved on the gearbox input shaft 560. The transmission disc 761 does not contact the gearbox input shaft 560, and the pulley housing 764 is circumferentially rotatably sleeved on the gearbox input shaft 560. There are two transmission discs 761, which are respectively located at both ends of the friction disc 762. The transmission disc 761 near the gearbox 500 is assembled with one end of the clutch push rod 780. The other end of the clutch push rod 780 passes through the pulley housing 764 and is assembled with the clutch push rod head 781. A clutch spring 704 is sleeved on the part of the clutch push rod 780 between the transmission disc 761 and the pulley housing 764 with which it is assembled. The clutch spring 704 applies an elastic force to the clutch push rod 780 to press it against the friction disc 762, so that in the initial state, the transmission disc 761 and the friction disc 762 are pressed together for transmission, that is, the gearbox input shaft 560 is in the power access mode. The transmission disc 761 away from the gearbox 500 is fixed to the pulley housing 764, so that when the other transmission disc 761 presses against the friction disc, the two transmission discs 761 will clamp and drive the friction disc 762.

[0081] The part of the clutch push rod 780 located between the pulley housing 764 and the clutch push rod head 781 is snap-fitted into the clutch fork groove 772 and is slidably assembled therewith. The clutch fork groove 772 cannot pass through the clutch push rod head 781. The clutch fork groove 772 is provided at one end of the clutch rotating rod 770. The other end of the clutch rotating rod 770 is pressed against the end face of the end face bearing 703. The middle part of the clutch rotating rod 770 is hinged to the pulley housing 764 through a rotating rod pin 771. The end face bearing 703 is installed on the movable clutch seat 740.

[0082] After the clutch pedal 711 is depressed, the clutch pedal 711 drives the clutch member 720 to overcome the torsion of the clutch torsion spring and drives the second clutch rod 730 to rotate towards the clutch pedal 711. The second clutch rod 730 drives the movable clutch seat 740 to rotate, thereby driving the movable clutch seat 740 to axially move towards the end face bearing 703. The end face bearing 703 pushes the end of the clutch rotating rod 770 in contact with it to move towards the pulley housing 764, so that the clutch rotating rod 770 rotates around the rotating rod pin 771, that is, the clutch fork groove 772 rotates away from the pulley housing 764. The clutch fork groove 772 presses against the clutch push rod head 781 to drive the clutch push rod 780 to move towards the movable clutch seat 740, thereby driving the corresponding transmission disc 761 to move away from the friction disc 762. At this time, the friction between the transmission disc 761 and the friction disc 760 decreases or even disappears, so that the transmission disc 761 cannot drive the friction disc 760 to rotate, that is, the pulley housing 764 cannot drive the gearbox input shaft 560 to rotate, realizing the cut-off of power. After the clutch pedal 711 is released, the clutch torsion spring drives the clutch member 720 to reverse and reset, and the clutch push rod 780 will move and reset in the direction away from the movable clutch seat 740 under the elastic force of the clutch spring 704, so that the transmission disc 761 and the friction disc 762 resume pressing and driving. At this time, the pulley housing 764 can drive the gearbox input shaft 560 to rotate.

[0083] Preferably, the first transmission belt 701 is tensioned by a belt tensioner 271. The belt tensioner 271 is installed on a tensioner bracket 270, and the tensioner bracket 270 is installed on a rotating bracket 211.

[0084] Preferably, the driving pulley is also connected to a hydraulic pump pulley through a second transmission belt 702 to form a belt drive mechanism. The hydraulic pump pulley is installed on the drive shaft of the hydraulic pump 216. When the engine runs, it can drive the hydraulic pump to operate to provide hydraulic pressure for the entire hydraulic system.

[0085] More preferably, the hydraulic pump 216 is installed on a pump bracket 250. A pump bracket groove 251 is provided on the pump bracket 250. A pump bracket bolt 252 passes through the pump bracket groove 251 and is assembled with the rotating bracket 211. The pump bracket groove 251 can move along the pump bracket bolt 252, and after moving into place, the pump bracket bolt 252 is tightened to fix the pump bracket 250 on the rotating bracket 211.

[0086] More preferably, one side of the pump bracket 250 is pressed against one end of the tightening screw 261. The tightening screw 261 passes through the tightening screw bracket 260 and is threadedly assembled therewith. The tightening screw bracket 260 is fixed on the rotating bracket 211. During use, by adjusting the displacement of the tightening screw 261 moving towards the pump bracket 250, the pump bracket 250 is tightened, so as to keep the hydraulic pump 216 fixed relative to the engine and tension the second drive belt 702.

[0087] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art.

[0088] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A rotary tiller with a rotating function, characterized in that: It includes a chassis, a rotating seat, and a working part. The working part is used for agricultural tillage operations and is installed on the rotating seat. The rotating seat is rotatable relative to the chassis and is assembled without axial movement. The chassis is used to drive the rotary tiller to travel. The rotating seat includes a rotating frame, a seat frame, and an operating platform. An operating frame and an engine are respectively installed on the rotating frame. The engine is used to provide power for the rotary tiller. A seat frame and an operating platform are respectively installed on the operating frame. A seat is installed on the seat frame. A gear lever, buttons for operation, and a shift lever for controlling gear shifting of the gearbox are provided on the operating platform. The chassis includes a chassis frame and a slewing bearing gear. The slewing bearing gear is installed on the chassis frame and meshes with a rotating gear for transmission. The rotating gear is installed on the output shaft of a rotating motor, and the rotating motor is installed on the rotating seat. The gearbox includes a gearbox housing installed on the rotating frame. The gear positions of the gearbox are controlled by a shifting mechanism. The shifting mechanism includes a shifting part and a shift lever. The shifting part is inserted into the gearbox housing and is assembled with the gearbox housing to be rotatable in a circumferential direction. A shifting swing arm is installed at one end of the shifting part located inside the gearbox housing. A shifting fork is installed on the shifting swing arm. The shifting fork is inserted between a high-speed driving gear and a low-speed driving gear. When the shifting part rotates, it drives the shift shaft sleeve to move axially through the shifting swing arm and the shifting fork to achieve gear shifting. A shifting power plate is installed at one end of the shifting part away from the shifting swing arm. The two ends of the shifting power plate are respectively hinged to different shifting connecting parts, and the two shifting connecting parts are respectively assembled with one end of different cables. The shifting mechanism further includes a shifting seat installed on the operating platform. A toothed part and a sunk groove are provided on the shifting seat. The sunk groove is assembled with a reel to be rotatable in a circumferential direction. A reel bolt passes through the shifting seat and the reel and is assembled with a nut, so that the reel and the shifting seat cannot move relative to each other axially. The reel is fixedly assembled with the shifting housing, and a connecting column is installed on the reel. The other ends of the two cables are respectively assembled with and wound around the connecting column. The connecting column is coaxially assembled with the reel. The toothed part is engaged with the locking teeth on a locking part. The locking part is installed in a locking installation groove of the shifting housing. The middle part of the locking part is hinged to the shifting housing through a locking rotating shaft. A torsion spring is installed between the locking part and the shifting housing, and the torsion spring applies a torsional force to the locking part to rotate towards the toothed part. One end of the locking part away from the locking teeth contacts or is close to one end of a push rod. The other end of the push rod passes through the shift lever and is assembled with a shift button. One end of the shift lever is inserted into the shifting housing, and a shift ball is installed at the other end. One end of the shift button is inserted into the shift ball and is assembled with it to be axially slidable. A push rod hole is also provided on the shifting housing. A spring ring is installed on the part of the push rod located in the push rod hole. A limit ring is installed at one end of the push rod hole close to the locking installation groove. A return spring is sleeved on the part of the push rod located between the limit ring and the spring ring. The return spring applies an elastic force to the push rod to push it towards the shift button.

2. The rotary tiller according to claim 1, characterized in that: The chassis further includes a tensioner, a crawler belt, and a traveling motor. There are two crawler belts, which are respectively installed on both sides of the chassis frame. Each crawler belt bypasses a plurality of crawler wheels, and two of the crawler wheels are respectively installed on the traveling power shaft and the crawler belt tensioning shaft. The traveling power shaft is connected to the output shaft of the traveling motor. The traveling power shaft, the crawler belt tensioning shaft, and the traveling motor are all installed on the chassis frame. One end of the crawler belt tensioning shaft is hinged to one end of the tensioner. A tensioning screw is assembled in the tensioner by screw thread. The tensioning screw passes through the tensioning force receiving plate and abuts against the tensioning force receiving plate. The tensioning force receiving plate is installed on the chassis frame; a rotary joint is installed inside the slewing bearing gear. The stator of the rotary joint is assembled with the chassis frame, and the rotor is assembled with the rotary frame. The rotary joint is used to supply the hydraulic oil at the rotary seat to the chassis.

3. The rotary tiller according to claim 1, characterized in that: The working part includes a protective cover, a lifting oil cylinder, and two bushings. First bushing flanges and second bushing flanges are respectively arranged at both ends of the bushings. The first bushing flanges of the two bushings are assembled with the protective cover by bolts. The second bushing flanges of the two bushings are respectively assembled with the gearbox housing of the gearbox. The gearbox is installed on the rotary frame; the gearbox housing is hinged to the cylinder end of the lifting oil cylinder. The telescopic shaft of the lifting oil cylinder is hinged to the protective cover through a connecting pin shaft; both bushings are assembled with the rotary frame through bushing seats, and the two bushings can rotate relative to the protective cover and / or the rotary frame; Power is input through the gearbox input shaft of the gearbox and then output from the gearbox output shaft. The gearbox output shaft passes through one of the bushings and is assembled with a first transmission wheel. The gearbox output shaft is assembled with the corresponding bushing so as to be circumferentially rotatable. The first transmission wheel is connected and driven to a second transmission wheel through a transmission member. The second transmission wheel is installed on the power input end of the working shaft; the working shaft is assembled with the protective cover so as to be circumferentially rotatable, and a working part is installed on the working shaft. The working part is used for performing farming operations.

4. The rotary tiller according to claim 3, characterized in that: A gearbox input shaft, a gearbox intermediate shaft, and a gearbox output shaft are installed inside the gearbox housing. The gearbox input shaft is used for inputting power. A shift sleeve is axially slidable and non-rotationally circumferentially sleeved on the gearbox input shaft. A high-speed driving gear and a low-speed driving gear are respectively installed on the shift sleeve. A driving small gear, a driving large gear, a high-speed transmission gear, and a low-speed transmission gear are respectively installed on the gearbox intermediate shaft; An output sleeve is non-rotationally circumferentially sleeved on the gearbox output shaft. An output large gear and an output small gear are respectively installed on the output sleeve; the output large gear and the output small gear are respectively meshed and driven with the driving small gear and the driving large gear; the high-speed transmission gear can be meshed and driven with the high-speed driving gear, and the low-speed transmission gear can be meshed and driven with the low-speed driving gear; When the high-speed transmission gear and the high-speed driving gear are meshed and driven, it is in the high-speed gear. When the low-speed transmission gear and the low-speed driving gear are meshed, it is in the low-speed gear. When the high-speed transmission gear and the high-speed driving gear are not meshed and the low-speed transmission gear and the low-speed driving gear are not meshed, it is in the neutral gear. Only one of these three gears appears.

5. The rotary tiller according to claim 3, characterized in that: Two notches are further provided on the protective cover, and the two notches are respectively assembled with the first working flange and the second working flange. The first working flange and the second working flange are respectively installed on the working shaft and are assembled with the working shaft so as to be relatively circumferentially rotatable; the first working flange and the second working flange are respectively assembled with the protective cover through the first connecting bolt and the second connecting bolt.

6. The rotary tiller according to any one of claims 1 to 4, characterized in that: The rotary tiller further includes a machine cover mechanism. The machine cover mechanism includes a machine cover, a hinge, a bumper beam, and a buckle. One end of the machine cover is hinged to the operating platform through the hinge, and a hook is installed at the other end. A lighting lamp and a camera are installed at the end of the machine cover away from the operating platform. The lighting lamp is used for illuminating the front in the driving direction, and the camera is used for acquiring an image of the front in the driving direction; the bumper beam is installed on the rotary frame, the end of the machine cover is closely attached to the bumper beam, and the buckle is installed on the bumper beam. The buckle is used for assembling with the hook to fix the machine cover on the bumper beam; The buckle includes a buckle seat installed on the bumper beam. The buckle seat is hinged to one end of the handle. A buckle rotating shaft is installed in the middle part of the handle. A U-shaped sleeve is installed on the buckle rotating shaft, and the U-shaped sleeve hooks onto the hook.

7. The rotary tiller according to claim 4, characterized in that: The input shaft of the gearbox is driven to rotate through a transmission mechanism. The transmission mechanism includes a first transmission belt, a pulley assembly, a fixed clutch seat, a movable clutch seat, a second clutch rod, a clutch member, and a first clutch rod. One end of the first clutch rod is assembled with the clutch member, and a clutch pedal is installed at the other end. One end of the clutch member is hinged to one end of the second clutch rod, and the other end of the second clutch rod is hinged to the movable clutch seat. The clutch member is rotatably installed on a clutch seat bracket, and the clutch seat bracket is installed on the rotary frame; the fixed clutch seat and the movable clutch seat are both sleeved on the input shaft of the gearbox, and the fixed clutch seat is fixed relative to the rotary frame; The movable clutch seat is rotatably sleeved on the input shaft of the gearbox; fixed inclined surfaces and movable inclined surfaces are respectively provided on the end faces of the fixed clutch seat and the movable clutch seat in contact with each other, and the distance between the fixed inclined surface and the movable inclined surface in the axial direction of the input shaft of the gearbox is different; The pulley assembly includes a pulley housing. The pulley housing is connected to the driving pulley through the first transmission belt to form a belt transmission mechanism. The driving pulley is installed on the output shaft of the engine; a transmission disc and a friction disc are respectively installed inside the pulley housing. The convex block of the transmission disc is clamped into the groove of the pulley housing and cannot rotate circumferentially relative to the pulley housing; the friction disc is axially slidable and is rotatably sleeved on the input shaft of the gearbox. The transmission disc does not contact the input shaft of the gearbox, and the pulley housing is rotatably sleeved on the input shaft of the gearbox; There are two transmission discs, which are respectively located at both ends of the friction disc. The transmission disc close to the gearbox is assembled with one end of the clutch push rod. The other end of the clutch push rod passes through the pulley housing and is assembled with the clutch push rod head. A clutch spring is sleeved on the part of the clutch push rod between the transmission disc and the pulley housing with which it is assembled. The clutch spring applies an elastic force to the clutch push rod to press it against the friction disc, so that the transmission disc and the friction disc are pressed against each other for transmission in the initial state; the transmission disc away from the gearbox is fixed on the pulley housing; The part of the clutch push rod located between the pulley housing and the clutch push rod head is snap-fitted into the clutch fork groove and is slidably assembled therewith. The clutch fork groove cannot pass through the clutch push rod head. The clutch fork groove is provided at one end of the clutch rotating rod. The other end of the clutch rotating rod is pressed against the end face of the end face bearing. The middle part of the clutch rotating rod is hinged to the pulley housing through a rotating rod pin. The end face bearing is installed on the movable clutch seat.

8. The rotary tiller according to claim 7, characterized in that: The driving pulley is also connected to the hydraulic pump pulley through a second transmission belt to form a belt drive mechanism. The hydraulic pump pulley is installed on the drive shaft of the hydraulic pump. The hydraulic pump is installed on the pump bracket. A pump bracket groove is provided on the pump bracket. After the pump bracket bolt passes through the pump bracket groove, it is assembled with the rotating bracket. The pump bracket groove can move along the pump bracket bolt, and after moving in place, the pump bracket bolt is tightened to fix the pump bracket on the rotating bracket. One side of the pump bracket is pressed against one end of the jacking screw. The jacking screw passes through the jacking screw bracket and is threadedly engaged therewith. The jacking screw bracket is fixed on the rotating bracket.

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