Agricultural rotary cultivator adapting to different types of land requirements

Abstract

The application relates to the field of agricultural machinery, in particular to an agricultural rotary cultivator suitable for different types of ploughing requirements, which comprises a gearbox, rotary cultivator shafts rotationally connected to the two sides of the gearbox, control grooves formed in the rotary cultivator shafts, a protective cover fixedly connected to one end of the rotary cultivator shaft through a bearing seat, the gearbox being fixedly connected with the protective cover, a plurality of arrayed rotary cultivator knives rotationally connected to the rotary cultivator shaft, double-movement motors fixedly connected to the two ends of the rotary cultivator shaft, and rotating mechanisms connected to the output shafts of the double-movement motors. The rotating mechanism can control the rotation of the large gear, the small gear is driven to rotate by the large gear, the worm is driven to rotate by the large gear, the rotary cultivator knife is driven to rotate by the worm, and the angle of the rotary cultivator knife can be adjusted, so that the rotary cultivator knife can be switched by replacing different rotary cultivator knives when different types of ploughing are carried out, and the carrying is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery, in particular to an agricultural rotary cultivator suitable for different types of land. BACKGROUND

[0002] China has a large number of different types of land. These lands mainly include paddy fields for planting aquatic crops, watered lands with water supply and irrigation facilities, and dry lands mainly relying on natural precipitation to grow xerophytic crops. When cultivating the land, a rotary cultivator is usually used for rotary cultivation to break up soil clods, making the land soft, which is conducive to the growth of crop roots and nutrient absorption; but different types of land have different ground hardness and different depth requirements for cultivation, which will cause different agricultural machinery to be used when cultivating, bringing inconvenience to farmers with different types of land.

[0003] The existing rotary cultivator has the following disadvantages when cultivating:

[0004] 1. The rotary cultivator angle of the traditional rotary cultivator is fixed, different types of land require different rotary cultivators, so when rotary cultivating different types of land, only different rotary cultivators can be switched by replacing different rotary cultivators, which is inconvenient to carry, troublesome to operate, time-consuming and laborious;

[0005] 2. The rotary cultivation effect of the hard land such as dry land is poor, and there are still many and large soil clods after rotary cultivation, and the soil clod breaking rate is low, which is not conducive to the cultivation of the land;

[0006] 3. When rotary cultivating the soft soil land such as sandy land, silt and paddy field, the rotary cultivator is easy to sink into the land and cannot move, and then the rotary cultivator is in a trapped state.

[0007] Therefore, the present application provides an agricultural rotary cultivator suitable for different types of land. SUMMARY

[0008] In order to overcome the shortcomings in the background art, the present application provides an agricultural rotary cultivator suitable for different types of land.

[0009] In order to achieve the above object, the present application provides the following technical scheme: a kind of agricultural rotary cultivator for different type of farmland demand, including gearbox, rotary tillage shaft and shroud, the two sides of gearbox are rotatably connected with rotary tillage shaft, control groove is opened in rotary tillage shaft, rotary tillage shaft one end is fixedly connected with shroud by bearing seat, gearbox is fixedly connected with shroud, rotary tillage shaft is rotatably connected with several array distribution rotary tillage knives, the two ends of rotary tillage shaft are fixedly connected with double motion motor, the output shaft of double motion motor is connected with rotating mechanism, rotating mechanism is located in control groove, rotating mechanism is used to drive rotary tillage knife synchronous rotation, to adjust the attitude of rotary tillage knife, the one end of double motion motor is connected with moving mechanism, moving mechanism is used to drive rotary tillage knife action and break up soil block.

[0010] Preferably, rotating mechanism includes large gear fixedly connected to the output end of double motion motor, a plurality of pinions are arrayed in rotary tillage shaft, a plurality of pinions are meshed with large gear, worm is fixedly connected to pinion, the two ends of worm are rotatably connected with rotary tillage shaft, one end of rotary tillage knife is fixedly connected with worm wheel, worm wheel is meshed with worm.

[0011] Preferably, moving mechanism includes straight rod rotatably connected to the output end of double motion motor, a plurality of long racks are fixedly connected to straight rod, movable slot is opened in rotary tillage knife, rotary tillage knife is rotatably connected with rotating shaft, rotating shaft is located in movable slot, one end of rotating shaft is fixedly connected with driving gear, driving gear is one-to-one corresponding and meshed with long rack, rotating shaft is connected with extension unit and stretching unit, extension unit and stretching unit are distributed in staggered positions.

[0012] Preferably, a plurality of sliding cylinders are slidably connected to straight rod, a plurality of connecting rods are arrayed on sliding cylinder, connecting rod is arranged in staggered position with worm, connecting rod is fixedly connected with inner wall of rotary tillage shaft.

[0013] Preferably, extension unit includes lever, a plurality of levers are connected in central symmetry on rotating shaft, a plurality of breaking grooves are opened on both sides of rotary tillage knife, a plurality of breaking grooves are communicated with movable slot, breaking blade is movably connected in breaking groove, breaking blade is located on the movement track of lever, so as to facilitate lever to push breaking blade out of breaking groove.

[0014] Preferably, locking groove is opened on the surface of breaking blade, moving groove is opened on the inner wall of both sides of rotary tillage knife, push rod and lock rod are arranged in moving groove, one end of push rod and lock rod is in contact with each other, the other end of lock rod is matched with locking groove.

[0015] Preferably, second spring is arranged on both sides of push rod, one end of second spring is fixedly connected with rotary tillage knife, tension spring is fixedly connected between lock rod and moving groove, so as to facilitate the reset of breaking blade after use.

[0016] Preferably, the stretching unit comprises arc-shaped racks, a plurality of arc-shaped racks are symmetrically connected to the rotating shaft, the arc-shaped racks are distributed in a staggered manner with the push rod, a plurality of accommodating grooves are formed on both sides of the rotary tiller, the accommodating grooves are in communication with the movable groove, the widening plates are movably connected in the accommodating grooves, a plurality of gear telescopic structures are symmetrically connected in the movable groove, one end of the gear telescopic structure is rotatably connected with the widening plate, the other end of the gear telescopic structure is engaged with the arc-shaped rack, and the gear telescopic structure facilitates the stretching of the widening plate, thereby increasing the contact area of the rotary tiller and the land.

[0017] Preferably, the gear telescopic structure comprises a support rod fixedly connected in the movable groove, a first gear rotatably connected to one end of the support rod, the first gear corresponding to the arc-shaped rack and located on the movement track of the arc-shaped rack, a second gear fixedly connected to the first gear through a connecting rod, a third gear engaged with the second gear, and a connecting plate connecting the second gear and the third gear, and a rotating rod fixedly connected to one side of the third gear and rotatably connected with the widening plate.

[0018] Preferably, a first spring is fixedly connected between the widening plate and the movable groove, and the first spring facilitates the resetting of the widening plate.

[0019] Beneficial effects: 1. The rotating mechanism can control the rotation of the large gear, the large gear drives the rotation of the small gear, and then the worm drives the rotation of the worm gear, and the worm gear drives the rotation of the rotary tiller, so that the angle of the rotary tiller can be adjusted;

[0020] 2. The stretching unit can push the crushing knife out of the crushing groove through the push rod, the crushing knife is in contact with the hard soil after the rotary tiller enters the hard soil, and the hard soil cut by the rotary tiller is crushed again through the diamond-shaped crushing knife, so that the crushing rate of the hard soil is improved;

[0021] 3. The stretching unit can push the widening plate out of the accommodating groove through the arc-shaped rack and the gear telescopic structure, thereby increasing the contact area with the land, so that the rotary tiller is not easy to be trapped in the paddy field or can facilitate the escape of the rotary tiller when the rotary tiller is trapped. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the three-dimensional structure of the application;

[0023] Figure 2 It is a partial sectional view of the rotary tiller shaft in the application;

[0024] Figure 3 It is a schematic view of the partial three-dimensional structure of the straight rod in the application; Figure 2

[0025] Figure 4 It is a schematic view of the partial three-dimensional structure of the straight rod in the application;

[0026] ​Figure 5 This is a three-dimensional structural diagram of the rotary tiller blade in this invention;

[0027] Figure 6 This is a top view schematic diagram of the first type of rotary tillage blade in this invention;

[0028] Figure 7 This is a top view schematic diagram of the second type of rotary tillage blade in this invention;

[0029] Figure 8 This is a partial structural schematic diagram of the rotary tiller blade in this invention;

[0030] Figure 9 This is a schematic diagram of the locking groove in this invention;

[0031] Figure 10 for Figure 9 Enlarged structural diagram at point B in the diagram;

[0032] Figure 11 This is the state of the rotary tillage blades when tilling farmland with high hardness according to the present invention;

[0033] Figure 12 This shows the state of the rotary tillage blades during rotary tillage of paddy fields according to the present invention.

[0034] Parts and their numbers in the diagram: 1-Rotary tiller shaft, 101-Control slot, 2-Gearbox, 3-Guard cover, 4-Rotary tiller blade, 41-Moving slot, 5-Dual motion motor, 6-Large gear, 7-Worm, 8-Worm wheel, 9-Small gear, 10-Straight rod, 11-Sliding cylinder, 111-Connecting rod, 12-Rotating shaft, 13-Drive gear, 14-Long rack, 15-Arc rack, 16-Gear telescopic structure, 161-First gear, 162-Second gear, 163-Third gear, 164-Connecting rod, 165-Rotating rod, 166-Support rod, 17-Wide plate, 171-Receiving slot, 18-First spring, 19-Pulley, 20-Crushing slot, 21-Crushing blade, 22-Locking slot, 23-Push rod, 24-Locking rod, 25-Second spring, 26-Tension spring. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings. Example

[0036] An agricultural rotary tiller adapted to the needs of different types of arable land, such as Figures 1-12As shown, including gearbox 2, gearbox 2 both sides of the rotating connection with rotary tillage shaft 1, rotary tillage shaft 1 in the control groove 101 is provided, rotary tillage shaft 1 one end is fixedly connected with the shroud 3 through the bearing seat, gearbox 2 and shroud 3 are fixedly connected, rotary tillage shaft 1 is rotatably connected with five array distribution rotary tillage knife 4, both ends of rotary tillage shaft 1 are fixedly connected with double motion motor 5, double motion motor 5 is ball spline shaft double motion motor, the output shaft of double motion motor 5 is connected with rotating mechanism, rotating mechanism is located in control groove 101, rotating mechanism is used to drive rotary tillage knife 4 synchronous rotation, further adjust the posture of rotary tillage knife 4, one end of double motion motor 5 is connected with moving mechanism, moving mechanism is used to drive rotary tillage knife 4 action to break up soil, when using, people according to different types of farmland will be adjusted to different state of the agricultural rotary tillage machine rotary tillage knife 4, when the need to adjust rotary tillage knife 4, people start double motion motor 5 work, double motion motor 5 drive rotating mechanism work, rotating mechanism drives rotary tillage knife 4 rotation, further can be adjusted to the appropriate state of rotary tillage knife 4, when the need to rotary tillage operation in higher hardness of the land or paddy field, double motion motor 5 drive moving mechanism work, further adjust rotary tillage knife 4, so that the agricultural rotary tillage machine can be suitable for different types of farmland, stronger adaptability.

[0037] Rotating mechanism includes fixedly connected to the output end of double motion motor 5 large gear 6, rotary tillage shaft 1 has five array small gear 9, five small gear 9 are meshed with large gear 6, small gear 9 is fixedly connected with worm 7, both ends of worm 7 are rotatably connected with rotary tillage shaft 1, one end of rotary tillage knife 4 is fixedly connected with worm wheel 8, worm wheel 8 is engaged with worm 7, through the setting of large gear 6, small gear 9, worm wheel 8 and worm 7, worm 7 can drive worm wheel 8 to rotate, further adjust the posture of rotary tillage knife 4 to adapt to different types of farmland.

[0038] Moving mechanism includes rotatingly connected to the output end of double motion motor 5 straight rod 10, five groups of long rack 14 are fixedly connected on straight rod 10, each group of long rack 14 has five, rotary tillage knife 4 is provided with movable groove 41, rotary tillage knife 4 is rotatably connected with shaft 12, shaft 12 is located in movable groove 41, one end of shaft 12 is fixedly connected with drive gear 13, drive gear 13 is correspondingly meshed with long rack 14, shaft 12 is connected with extension unit and stretching unit, extension unit and stretching unit are distributed in staggered manner, extension unit can adapt to higher hardness of the land, improve the breaking rate of soil of stretching unit, which is beneficial to people's planting, stretching unit can adapt to paddy field and other relatively soft land, increase the escape ability of agricultural rotary tillage machine, and will not sink into the soil.

[0039] The four sliding cylinders 11 are slidably connected to the straight rod 10, and can provide support for the straight rod 10, facilitating the sliding of the straight rod 10. The four sliding cylinders 11 are arrayed with five connecting rods 111, which are arranged in a staggered manner with the worm 7 and will not affect the rotation of the worm 7. The connecting rods 111 are fixedly connected to the inner wall of the rotary tillage shaft 1.

[0040] The extension unit comprises the push rods 19, and the five groups of push rods 19 are symmetrically connected to the rotating shaft 12. The rotary tillage knives 4 are provided with five groups of crushing grooves 20 on both sides, and the five groups of crushing grooves 20 are in communication with the movable grooves 41. The crushing knives 21 are movably connected in the crushing grooves 20, and the crushing knives 21 are located on the movement track of the push rods 19. The crushing knives 21 correspond to the push rods 19 one by one, so that the push rods 19 can push the crushing knives 21 out of the crushing grooves 20. The shape of the crushing knives 21 is a rhombus, which is convenient for crushing hard soil in large pieces and improving the crushing rate.

[0041] The surface of the crushing knife 21 is provided with a locking groove 22, and the inner walls of the rotary tillage knives 4 are provided with moving grooves on both sides. The moving grooves are provided with push rods 23 and lock rods 24. One end of the push rod 23 and the lock rod 24 are in contact with each other, and the other end of the lock rod 24 is matched with the locking groove 22. After the crushing knife 21 is extended, the push rod 23 and the lock rod 24 can fix the crushing knife 21, so that the crushing knife 21 can remain in the extended state, which is beneficial to the crushing of large soil blocks.

[0042] The two sides of the push rod 23 are provided with second springs 25, one end of the second spring 25 is fixedly connected with the rotary tillage knife 4, and the lock rod 24 and the moving groove are fixedly connected with a tension spring 26, which is convenient for the resetting of the crushing knife 21 after use.

[0043] The extension unit comprises the arc-shaped racks 15, and the five groups of arc-shaped racks 15 are symmetrically connected to the rotating shaft 12. The arc-shaped racks 15 are arranged in a staggered manner with the push rods 19. The rotary tillage knives 4 are provided with five groups of accommodating grooves 171 on both sides, and the accommodating grooves 171 and the crushing grooves 20 are arranged in a staggered manner. The five groups of accommodating grooves 171 are in communication with the movable grooves 41. The accommodating grooves 171 movably connect the widening plates 17. The movable grooves 41 are symmetrically connected with five groups of gear extension structures 16. The gear extension structures 16 correspond to the widening plates 17 and the arc-shaped racks 15 one by one. The gear extension structures 16 facilitate the extension of the widening plates 17, and increase the contact area of the rotary tillage knives 4 and the land.

[0044] The gear telescopic structure 16 comprises a supporting rod 166 fixedly connected in the movable groove 41, one end of the supporting rod 166 being rotatably connected with a first gear 161 corresponding to the arc-shaped rack 15 and located on the movement track of the arc-shaped rack 15, the first gear 161 being fixedly connected with a second gear 162 through a connecting rod 164, the second gear 162 being meshingly connected with a third gear 163, the rotation shaft of the second gear 162 and the rotation shaft of the third gear 163 being connected through a connecting plate, one side of the third gear 163 being fixedly connected with a rotating rod 165, the rotating rod 165 being rotatably connected with the widened plate 17.

[0045] The widened plate 17 is fixedly connected with the movable groove 41 through a first spring 18, so as to facilitate the resetting of the widened plate 17.

[0046] When people carry out the rotary tillage operation on different types of farmland, people start the double-motion motor 5 to work, the double-motion motor 5 rotates to drive the large gear 6 to rotate, the large gear 6 drives the small gear 9 to rotate, and then the worm 7 drives the worm wheel 8 to rotate through the worm 7, the worm wheel 8 drives the rotary tillage blade 4 to rotate, so as to adjust the angle of the rotary tillage blade 4; when it is necessary to carry out the rotary tillage operation on the watered land or the land with low hardness, people adjust the included angle between the rotary tillage blade 4 and the rotary tillage shaft 1 to 45 degrees, so as to facilitate improving the rotary tillage effect; when it is necessary to carry out the rotary tillage operation on the dry land or the land with high hardness, people adjust the included angle between the rotary tillage blade 4 and the rotary tillage shaft 1 to 90 degrees, so as to facilitate the rotary tillage blade 4 to enter the soil better, reduce the probability of the rotary tillage blade 4 idling, and improve the rotary tillage efficiency; when it is necessary to carry out the rotary tillage operation on the paddy field or the soft soil or the rotary tillage machine is in the trapped state in the sludge, people adjust the included angle between the rotary tillage blade 4 and the rotary tillage shaft 1 to 180 degrees, so as to increase the contact area of the rotary tillage blade 4 and the land or the sludge, effectively improve the contact area, and reduce the trapped rate or make the rotary tillage machine escape from the trapped state.

[0047] When rotary tillage is required on dry land or land with high hardness, the dual-motion motor 5 is activated. The dual-motion motor 5 controls the linear rod 10 to move linearly, which in turn drives the long rack 14 to move linearly, thereby rotating the shaft 12 and the drive gear 13. The shaft 12 drives the lever 19 to rotate, and the lever 19 pushes the crushing blade 21 out of the crushing trough 20. Once the crushing blade 21 is fully extended, the dual-motion motor 5 is turned off, and the lever 19 holds the crushing blade 21 in place. During the extension process, the crushing blade 21 pushes the push rod 23 to move. The push rod 23 drives the locking rod 24 to move, and the second spring 25 and the tension spring 26 retract. When the breaker blade 21 is fully extended, the push rod 23 and the locking rod 24 move into place, and the locking rod 24 is located in the locking groove 22. Thus, the locking rod 24 can fix the breaker blade 21, ensuring that the breaker blade 21 will not retract when it comes into contact with hard soil. At the same time, the breaker blades 21 on both sides extend and come into contact with the hard soil after the rotary tiller 4 enters the hard soil. Then, the diamond-shaped breaker blades 21 further break up the hard soil after it has been cut by the rotary tiller 4, thereby increasing the breaking rate of the hard soil, reducing the need for repeated rotary tillage, and facilitating planting and seed germination.

[0048] When rotary tillage is required in paddy fields or soft soil, the dual-motion motor 5 is activated. The dual-motion motor 5 controls the linear rod 10 to move linearly, which in turn drives the long rack 14 to move linearly, thereby rotating the shaft 12 and the drive gear 13. The shaft 12 then drives the arc-shaped rack 15 to rotate. When the arc-shaped rack 15 meshes with the first gear 161, it drives the first gear 161 to rotate, which in turn drives the connecting rod 164 to rotate the second gear 162. The second gear 162 then drives the third gear 163. When the gear rotates, the third gear 163 pushes the widening plate 17 out of the receiving groove 171 through the rotating rod 165. When the widening plate 17 is fully extended, the connecting rod 164 and the rotating rod 165 are on the same horizontal plane, and the entire gear telescopic structure 16 is in the extended state. This increases the contact area with the soil, making it less likely for the rotary tiller to get stuck in the paddy field, or facilitating the rotary tiller's escape when it gets stuck. When the widening plate 17 extends outward, the first spring 18 is compressed, thereby providing power for the widening plate 17 to return to its original position.

[0049] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. An agricultural rotary cultivator adapted to different types of tillage requirements, characterized in that, The utility model provides a rotatory tiller, including gearbox (2), the both sides of gearbox (2) are rotatably connected with rotary tiller axle (1), is provided with control groove (101) in rotary tiller axle (1), rotary tiller axle (1) one end is fixedly connected with the shroud (3) through bearing seat, gearbox (2) is fixedly connected with the shroud (3), rotatory tiller axle (1) is rotatably connected with a plurality of array distribution's rotary tiller knife (4), the both ends of rotatory tiller axle (1) are fixedly connected with double movement motor (5), the output shaft of double movement motor (5) is connected with rotating mechanism, rotating mechanism is located in control groove (101), rotating mechanism is used for driving rotary tiller knife (4) synchronous rotation, further adjusts the attitude of rotary tiller knife (4), one end of double movement motor (5) is connected with moving mechanism, moving mechanism is used for driving rotary tiller knife (4) action breaks up soil block, moving mechanism includes the straight rod (10) of rotation connection in the output end of double movement motor (5), a plurality of long rack (14) are fixedly connected on straight rod (10), the rotary tiller knife (4) is provided with movable slot (41) in, rotary tiller knife (4) is rotatably connected with the shaft (12), the shaft (12) is located in movable slot (41), one end of the shaft (12) is fixedly connected with drive gear (13), drive gear (13) and long rack (14) one to one correspondingly and meshed connection, the shaft (12) is connected with the extension unit and the stretching unit, the extension unit and the stretching unit are staggered distribution, the extension unit includes the lever (19), the shaft (12) is connected with a plurality of lever (19) in center symmetry, a plurality of broken slots (20) are provided with in the both sides of rotary tiller knife (4), a plurality of broken slots (20) are communicated with movable slot (41), the broken blade (21) is movably connected in the broken slot (20), the broken blade (21) is located on the motion trail of lever (19), the lever (19) is convenient for the broken blade (21) from the broken slot (20) in push out, the stretching unit includes arc rack (15), the shaft (12) is connected with a plurality of arc rack (15) in symmetry, arc rack (15) and lever (19) are staggered distribution, a plurality of containing groove (171) are provided with in the both sides of rotary tiller knife (4), a plurality of containing groove (171) are communicated with movable slot (41), the containing groove (171) is movably connected with the widening board (17), movable slot (41) is connected with a plurality of gear telescopic structure (16) in center symmetry, one end of gear telescopic structure (16) is rotatably connected with the widening board (17), the other end of gear telescopic structure (16) and arc rack (15) are engaged, gear telescopic structure (16) is convenient for the widening board (17) to be stretched and be opened and increase the contact area of rotary tiller knife (4) and land.

2. The agricultural rotary cultivator of claim 1, wherein, A plurality of sliding cylinders (11) are slidably connected to the straight rod (10), and a plurality of connecting rods (111) are arranged on the sliding cylinders (11) and fixedly connected to the inner wall of the rotary tillage shaft (1).

3. The agricultural rotary cultivator of claim 1, wherein, The surface of the crushing knife (21) is provided with a locking groove (22), and the inner walls on both sides of the rotary tillage knife (4) are provided with moving grooves, in which push rods (23) and lock rods (24) are arranged, one ends of the push rods (23) and the lock rods (24) are in contact with each other, and the other end of the lock rod (24) is matched with the locking groove (22).

4. The agricultural rotary cultivator of claim 3, wherein, Second springs (25) are arranged on both sides of the push rod (23), one end of the second spring (25) is fixedly connected with the rotary tillage knife (4), and a tension spring (26) is fixedly connected between the lock rod (24) and the moving groove, so as to facilitate the resetting of the crushing knife (21) after use.

5. The agricultural rotary cultivator of claim 1, wherein, The gear telescopic structure (16) comprises a support rod (166) fixedly connected in the movable groove (41), one end of the support rod (166) is rotatably connected with a first gear (161), the first gear (161) corresponds to the arc-shaped rack (15) and is located on the movement track of the arc-shaped rack (15), the first gear (161) is fixedly connected with a second gear (162) through a connecting rod (164), the second gear (162) is meshingly connected with a third gear (163), the second gear (162) and the third gear (163) are connected through a connecting plate, one side of the third gear (163) is fixedly connected with a rotating rod (165), and the rotating rod (165) is rotatably connected with the widened plate (17).

6. The agricultural rotary cultivator of claim 1, wherein, The first spring (18) is fixedly connected between the widened plate (17) and the movable groove (41), so as to facilitate the resetting of the widened plate (17).

7. The agricultural rotary cultivator of claim 2, wherein, The rotating mechanism comprises a large gear (6) fixedly connected to the output end of the double-movement motor (5), a plurality of small gears (9) are arranged in the rotary tillage shaft (1), the small gears (9) are meshingly connected with the large gear (6), a worm (7) is fixedly connected to the small gear (9), both ends of the worm (7) are rotatably connected with the rotary tillage shaft (1), the connecting rod (111) is arranged in a staggered manner with the worm (7), one end of the rotary tillage knife (4) is fixedly connected with a worm wheel (8), and the worm wheel (8) is meshed with the worm (7).

Images