CN114616935A - Front-rear drive tiller with rear engine - Google Patents

Abstract

A front-rear drive tiller with a rear engine comprises a front axle, a frame, the engine and a rear axle, wherein the rear axle is arranged below the rear side of the frame; the engine is arranged on the rear side of the frame; the front axle of the vehicle is fixedly connected with a hinged connecting seat, the front axle is hinged and installed below the front side of the rack through the hinged connecting seat, and the rack is provided with a steering hydraulic cylinder and a steering gear for controlling steering; tillage wheels are arranged on the driving shafts of the front axle and the rear axle; the transfer gearbox is connected with the engine through a transmission shaft, the front side of the transfer gearbox is connected with the power input end of a front axle of the vehicle through a transmission connector, the rear side of the transfer gearbox is connected with the rear-drive gearbox through a rear output transmission shaft, and the rear-drive gearbox is connected with the power input end of a rear axle of the vehicle through a rear-drive transmission shaft; the rear-drive gearbox is used for changing the rotating speed of the rear farming wheels to realize the adjustment of the farming depth. The tiller has high tillage efficiency and easy regulation of tillage depth.

Description

A rear-engine front and rear drive tiller

technical field

The utility model relates to the technical field of agricultural tillage equipment, in particular to a front and rear drive tiller with a rear engine.

Background technique

According to the normal planting method, before the crops and cash crops are planted, the plots for planting need to be tilled, and the plots can be divided into paddy fields and dry land according to whether there is irrigation or not and planting categories. With the development of science and technology, agriculture has developed from manual agriculture to mechanization and automation, and cultivators have also achieved rapid development, improving agricultural efficiency.

Research has found that in dry land farming, traditional four-wheel tractors are generally used to drive and pull the rotary tiller to loosen the soil. The length of the rotary tiller of the rotary tiller is fixed, and the depth of the rotary tillage is generally not greater than that of the rotary tiller. The length of the tiller. And there are related professional and technical reports that some crops are deeply cultivated and planted, which can preserve water and drought, and increase yield. However, the power of the small and medium-sized tractors currently used is limited, and it is impossible to directly drive the ultra-long rotary tiller for cultivation. The tillage depth of the common rotary tiller does not exceed 15 cm, which is difficult to meet the agronomic requirements.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a rear-engine front- and rear-drive tiller; the front and rear axles of the front- and rear-drive tiller are equipped with tilling wheels, which are used as both walking driving wheels and tilling wheels, with high tillage efficiency and easy operation. , and adjust the tillage depth by changing the speed difference between the front and rear tillage wheels.

The technical scheme of the present utility model is realized in this way:

A rear-engine front and rear drive tiller, comprising a front axle, a frame, an engine and a rear axle, wherein the rear axle is installed under the rear side of the frame; the engine is installed at the rear of the frame A hinged connection seat is fixedly connected to the front axle of the vehicle, the front axle of the vehicle is hingedly installed under the front side of the frame through the hinged connection seat, and a steering hydraulic cylinder for controlling the rotation of the hinged connection seat is installed on the frame. There is a steering machine that controls the work of the steering hydraulic cylinder. The cylinder seat of the steering hydraulic cylinder is hinged with the frame, and the piston shaft of the steering hydraulic cylinder is hinged with the hinged connection seat; the driving shafts of the front axle and the rear axle are equipped with farming wheels; A transfer gearbox and a rear drive gearbox are installed on the frame. The transfer gearbox is connected to the engine through a transmission shaft for power transmission. The front side of the transfer gearbox is connected to the front of the vehicle through a transmission connector for power transmission. The power input end of the bridge is connected, and the transmission connector is a universal drive shaft. The rear side of the transfer gearbox is connected to the rear drive gearbox through the rear output drive shaft for transmitting power. The transmission shaft is connected with the power input end of the rear axle of the vehicle; the rear-drive gearbox is installed with a rear-drive shift lever for operating to change the rotation speed of the rear-drive, and the rear-drive gearbox is used to change the rotation speed of the farming wheel of the rear axle, so that the There is a speed difference between the rotational speed of the tilling wheel of the rear axle of the vehicle and the rotational speed of the tilling wheel of the front axle of the vehicle, so as to realize the adjustment of the tilling depth. In order to facilitate the operation, the cab and brake system are also installed on the frame.

Further preferred: the transfer case is equipped with a transfer case shift lever for operating and changing the transmission speed.

Further preferred: a gearbox is installed between the transmission shaft and the engine, the output power of the engine is transmitted from the transmission shaft to the transfer gearbox after the transmission is shifted, and the gearbox is installed with a transmission for operating to change the rotational speed of the output power of the engine. of the transmission lever.

Further preferred: the power input end of the front axle of the vehicle is vertically installed and connected with a corner device, and the power input shaft of the corner device is connected with the transfer gearbox through a transmission connector, and the transmission connector is a connecting flange, The power output shaft of the corner device is connected with the power input end of the front axle of the vehicle; a gear mounting seat is arranged on the hinge connection seat, a driving gear is installed in the gear mounting seat, and the driving gear is installed on the power output shaft of the corner device. The center of the drive gear is provided with a hexagonal through hole, and a hexagonal shaft is slidably installed through the hexagonal through hole. The bottom of the hexagonal shaft is fixedly connected with a rotary tiller for rotating cultivated land, and the top of the hexagonal shaft is fixed with a rotating connection The hinged connection seat is provided with an installation lug plate extending forward, a hydraulic cylinder for controlling the lifting of the hexagonal shaft is installed on the installation lug plate, and the piston shaft of the hydraulic cylinder is connected with the rotating connection lug to limit rotation. The piston shaft of the hydraulic cylinder can be rotatably passed through the rotating connecting lug, and the bottom end of the piston shaft of the hydraulic cylinder is installed with a limit nut to prevent the piston shaft of the hydraulic cylinder from being separated from the rotating connecting lug, and the transmission on the power output shaft of the angle gear. The gear transmits the power to the driving gear, the driving gear drives the hexagonal shaft to rotate, and the hexagonal shaft drives the rotating connecting ear to rotate with the piston shaft of the hydraulic cylinder as the rotation center.

Further preferably: the farming wheel includes a wheel hub for being installed and connected with the drive shaft, and also includes a harrow tooth plate and a wheel rim, the wheel rim and the wheel hub are arranged coaxially, and the wheel rim is arranged on one side of the wheel hub or The two sides are respectively arranged, and the plurality of rake tooth plates are arranged in a ring shape, and the plurality of rake tooth plates are fixedly connected to the wheel rim and the wheel hub along the axis. The plate surface of the rake tooth plate and the fixed connection point of the tooth plate The surface formed with the central axis is at an angle of 30-45 degrees. The fixed connection point of the rake tooth plate refers to any point of the fixed connection between the rake tooth plate and the rim or hub. Each rake tooth plate is provided with multiple rakes. The tines, the rake tine plate and the rake tine feed can be integrally formed, or can be set as a separate type, that is, the rake tines can be detachably installed on the rake tine plate through mounting bolts, and the lower part of the rake tines is fitted with the plate surface of the rake tine plate Then, it is fixed by installing bolts, and the upper part of the rake teeth extends upward along the plate surface of the rake tine plate, and the split type is arranged to facilitate the replacement and maintenance of the rake teeth.

Further preferred: the rear drive gearbox adopts a continuously variable gearbox, which can make the tillage wheel driven by the rear axle of the vehicle obtain a free rotation speed, which is beneficial to change the speed difference between the front tillage wheel and the rear tillage wheel, and is more conducive to adjusting the tillage depth.

When the wheel rim is only arranged on one side of the hub, the tillage wheel is divided into a left tillage wheel and a right tillage wheel. The left tillage wheel and the right tillage wheel are installed and used in pairs. The harrow tooth plate and the wheel rim are arranged coaxially with the wheel hub, and the plurality of harrow tooth plates are arranged evenly in a ring shape, and the plurality of harrow tooth plates are fixed between the wheel rim and the wheel hub along the axis; The surface of the tine plate of the wheel is at a positive angle of 30-45 degrees with the fixed connection point and the central axis of the tine plate. The fixed connection point and the central axis of the plate surface of the tine plate of the right tillage wheel The resulting face is at an angle of minus 30-45 degrees. When the wheel rims are respectively arranged on both sides of the hub, the hub is arranged in the center, and the tilling wheel can be divided into left tilling wheel and right tilling wheel, that is, the structure of the left tilling wheel and the right tilling wheel is the same.

The advantages of this rear engine front and rear drive tiller are:

1. The front axle of the rear-engine front- and rear-drive tiller is hingedly installed under the front side of the frame, and the rear axle is installed under the rear side of the frame. The steering is controlled by the steering gear and steering hydraulic cylinder, and the operation is easy; The engine is installed on the rear side of the frame, and the output power of the engine is distributed to the front axle and the rear axle through the transfer gearbox. The front axle and the rear axle are installed with farming wheels with the same structure. The walking driving wheel is also used as a tilling wheel, and the rotation speed of the tilling wheel on the rear axle of the vehicle is also changed by operating the rear-drive gearbox through the rear-drive shift lever. Depth adjustment; and for dry hard soil, it can be ploughed at one time, which innovates the traditional hard soil ploughing mode that requires first ploughing and then raking.

2. The adopted tillage wheel is detachably installed on the drive shaft of the axle through the hub to drive the tillage wheel to rotate and cultivate, and the tillage wheel is used as a driving wheel to travel, so there is no need to equip a special rotary tiller for tilling, instead of the big glue that has not changed for a hundred years. wheel tractor. Due to the setting of the harrow tine plate and the harrow tine, by adjusting the installation direction of the tillage wheel, the rake tines follow the harrow tine plate to be inclined forward or backward, so that they can be installed on the same drive shaft to realize paddy field harrowing and dry land. The tillage of loosening soil has high tillage efficiency and lower fuel consumption under the same tillage effect.

3. The front of the tillage wheels on both sides of the front axle of the truck is installed with a rotary tiller that is controlled up and down by a hydraulic cylinder. The rotary tiller is driven by the output power transmitted by the corner device. The soil that has been missed tillage is avoided, and repeated tillage is not required, which further improves the tillage efficiency.

4. The front and rear drive tiller with rear engine can not only adapt to the cultivation of paddy fields and dry land, but also adapt to the cultivation of wetlands.

Description of drawings

Fig. 1 is the structural representation of the front and rear drive tiller with rear engine in the first embodiment;

Fig. 2 is the bottom view schematic diagram of Fig. 1;

Fig. 3 is the three-dimensional schematic diagram of the front and rear drive tiller of the rear engine in the first embodiment;

Fig. 4 is the structural representation of the front and rear drive tiller of the rear engine in the second embodiment;

Fig. 5 is the three-dimensional structure schematic diagram of the front and rear drive tiller of the rear engine in the second embodiment;

Fig. 6 is a schematic diagram of the installation style of the tillage wheel;

Fig. 7 is the schematic diagram of installation pattern two of tillage wheel;

Figure 8 is a schematic structural diagram of a left tiller wheel;

FIG. 9 is a schematic top view of FIG. 8;

Fig. 10 is the three-dimensional structure schematic diagram of the left tillage wheel;

Figure 11 is a schematic diagram of the structure of the right tillage wheel;

Figure 12 is a schematic plan view of Figure 10;

Fig. 13 is the three-dimensional structure schematic diagram of the right tillage wheel;

The names of the parts with the serial numbers in the figure are:

1. Tillage wheel; 2. Front axle; 3. Hinged joint seat; 4. Steering hydraulic cylinder; 5. Transfer gearbox; 6. Frame; 7. Transfer case shift lever; 8. Steering machine; 9. Rear-drive gear lever; 10. Transmission shaft; 11. Engine; 12. Rear axle; 13. Rear-drive transmission shaft; 14. Rear-drive transmission; 15. Rear output transmission shaft; 16. Transmission connector; 17. Gearbox; 18. Gearbox lever; 19. Angler; 20. Mounting lug plate; 21. Hydraulic cylinder; 22. Rotating connecting lug; 23. Driving gear; 24. Gear mounting seat; 25. Hexagonal shaft; 26. Rotary tillage vertical knife; 27. Transmission gear; 28. Wheel hub; 29. Harrow tooth, 30, Harrow tooth plate, 31, Mounting bolt, 32, Wheel rim, 33, Left tillage wheel, 34, Drive shaft, 35, Right tillage wheel.

Detailed ways

In order to introduce the technology of the present application in more detail, the technology of the present application will be further described below with reference to the accompanying drawings and embodiments.

Example 1

A rear-engine front and rear drive tiller, comprising a front axle 2, a frame 6, an engine 11 and a rear axle 12, the rear axle 12 is installed under the rear side of the frame 6; the engine 11 is installed on the rear side of the rack 6; the front axle 2 is fixedly connected with a hinged connection seat 3, and the front axle 2 is hingedly installed under the front side of the rack 6 through the hinged connection seat 3, on the rack 6 A steering hydraulic cylinder 4 for controlling the rotation of the hinged connection base 3 and a steering gear 8 for controlling the operation of the steering hydraulic cylinder 4 are installed. The cylinder seat of the steering hydraulic cylinder 4 is hinged with the frame 6, and the piston shaft of the steering hydraulic cylinder 4 is hinged The connecting seat 3 is hinged; the drive shafts of the front axle 2 and the rear axle 12 are both installed with the tillage wheel 1; the frame 6 is installed with a transfer gearbox 5 and a rear drive gearbox 14, The transmission shaft 10 for power transmission is connected with the engine 11, the front side of the transfer gearbox 5 is connected with the power input end of the front axle 2 through the transmission connector 16 for power transmission, and the rear side of the transfer gearbox 5 is connected with the power input end of the front axle 2. The rear output transmission shaft 15 for transmitting power is connected with the rear drive gearbox 14, and the rear drive gearbox 14 is connected with the power input end of the rear axle 12 through the rear drive transmission shaft 13; Rear-drive shift lever 9 that changes the rotational speed of the rear-drive. By operating the rear-drive shift lever 9, the rear-drive gearbox 14 is used to change the rotational speed of the tilling wheel 1 of the rear axle 12, so that the rotational speed of the tilling wheel 1 of the rear axle 12 is the same as that of the tilling wheel 1 of the front axle 2. There is a speed difference in the rotation speed to realize the adjustment of the depth of cultivation.

The transfer case 5 is provided with a transfer case shift lever 7 for operating and changing the transmission speed.

The farming wheel 1 includes a wheel hub 28 for being installed and connected with the drive shaft 34, and also includes a harrow tooth plate 30 and a wheel rim 32. The wheel rim 32 is coaxially arranged with the wheel hub 28, and the wheel rims 32 are respectively arranged on the On both sides of the wheel hub 28, the wheel hub 28 is arranged in the center, and the plurality of rake tooth plates 30 are uniformly arranged in a ring shape. The fixed connection point of the plate surface and the fixed connection point of the rake tooth plate 30 and the surface formed by the central axis are at an angle of 30-45 degrees, preferably at an angle of 35 degrees. The fixed connection point of the rake tooth plate 30 refers to the rake tooth plate 30 and the rim 32 or any point of the fixed connection of the wheel hub 28 , each tine plate 30 is provided with a plurality of rake teeth 29 .

When used for paddy field farming, the wheel hub 28 is fixedly mounted on the drive shaft 34 by bolts, and the rake teeth 29 follow the rake tooth plate 30 to be inclined rearward; the power output from the engine 11 is transmitted to the transfer gearbox 5 through the transmission shaft 10, The operation of the transfer case shift lever 7 can change the transmission speed ratio of the transfer gearbox 5 to realize the adjustment of the gear position; the power output from the transfer gearbox 5 is transmitted to the front axle 2 through the transmission connector 16, and the transfer gear The power output from the box 5 is also transmitted to the rear drive gearbox 14 through the rear output drive shaft 15, and then to the rear axle 12 through the rear drive drive shaft 13; the steering machine 8 controls the work of the steering hydraulic cylinder 4, and drives the hinged connection seat. 3 rotates, thereby driving the entire front axle 2 to rotate to realize steering control; the drive shaft 34 of the axle drives the tilling wheel 1 to rotate and cultivate, and walks as a driving wheel. Deep subsidence, the harrow teeth 29 assist in loosening the soil and improve work efficiency; when used for dry land farming, the installation of the tillage wheel is installed in the same direction as the paddy field farming, that is, the tiller wheel is rotated 180 degrees to install, and the harrow teeth 29 follow the harrow tooth plate 30 It is inclined forward, and the drive shaft 34 of the axle drives the tilling wheel to rotate and cultivate, and it travels as a driving wheel. Since the rake tine plate 30 is in small area or line contact with the ground to loosen the soil, the rake tine 29 follows the harrow tine plate 30 to rotate the hoe. Dig the soil and realize the cultivation of hard soil in dry land. When it is necessary to adjust the tillage depth, operate the rear-drive shift lever 9 to change the transmission speed ratio of the rear-drive gearbox 14 to realize the rotational speed of the tilling wheel 1 on the rear axle 12 of the vehicle, and let the rotational speed of the tilling wheel 1 on the rear axle 12 There is a speed difference with the rotation speed of the tillage wheel 1 on the front axle 2 of the vehicle, so as to realize the adjustment of the tillage depth.

Embodiment 2

A rear-engine front and rear drive tiller, comprising a front axle 2, a frame 6, an engine 11 and a rear axle 12, the rear axle 12 is installed under the rear side of the frame 6; the engine 11 is installed on the rear side of the rack 6; the front axle 2 is fixedly connected with a hinged connection seat 3, and the front axle 2 is hingedly installed under the front side of the rack 6 through the hinged connection seat 3, on the rack 6 A steering hydraulic cylinder 4 for controlling the rotation of the hinged connection base 3 and a steering gear 8 for controlling the operation of the steering hydraulic cylinder 4 are installed. The cylinder seat of the steering hydraulic cylinder 4 is hinged with the frame 6, and the piston shaft of the steering hydraulic cylinder 4 is hinged The connecting seat 3 is hinged; the drive shafts of the front axle 2 and the rear axle 12 are both installed with the tillage wheel 1; the frame 6 is installed with a transfer gearbox 5 and a rear drive gearbox 14, The transmission shaft 10 for power transmission is connected with the engine 11, the front side of the transfer gearbox 5 is connected with the power input end of the front axle 2 through the transmission connector 16 for power transmission, and the rear side of the transfer gearbox 5 is connected with the power input end of the front axle 2. The rear output transmission shaft 15 for transmitting power is connected with the rear drive gearbox 14, and the rear drive gearbox 14 is connected with the power input end of the rear axle 12 through the rear drive transmission shaft 13; Rear-drive shift lever 9 that changes the rotational speed of the rear-drive.

A gearbox 17 is installed between the transmission shaft 10 and the engine 11, and the output power of the engine 11 is shifted from the transmission shaft 10 to the transfer gearbox 5 after being shifted by the gearbox 17. The engine 11 outputs the transmission lever 18 of the power rotational speed.

The power input end of the front axle 2 is vertically installed and connected with a corner device 19, the power input shaft of the corner device 19 is connected with the transfer gearbox 5 through the transmission connector 16, and the power output shaft of the corner device 19 is connected to the front of the vehicle. The power input end of the bridge 2 is connected; the hinged connection seat 3 is provided with a gear mounting seat 24, and a driving gear 23 is mounted in the gear mounting seat 24, and the driving gear 23 is connected with the transmission mounted on the power output shaft of the angle gear 19. The gear 27 is meshed; the center of the drive gear 23 is provided with a hexagonal through hole, and a hexagonal shaft 25 is slidably installed in the hexagonal through hole. A rotating connection lug 22 is fixed; the hinged connection base 3 is provided with a forwardly extending installation lug plate 20, and a hydraulic cylinder 21 for controlling the lifting of the hexagonal shaft 25 is installed on the installation lug plate 20, and the piston shaft of the hydraulic cylinder 21 is connected with the rotation The ear 22 is connected with a limit rotation. The piston shaft of the hydraulic cylinder 21 can be rotatably passed through the rotating connecting lug 22, and the bottom end of the piston shaft of the hydraulic cylinder 21 is installed with a limit nut to prevent the piston shaft of the hydraulic cylinder 21 from being separated from the rotating connecting lug 22. The transmission gear 27 on the power output shaft transmits the power to the driving gear 23, the driving gear 23 drives the hexagonal shaft 25 to rotate, and the hexagonal shaft 25 drives the rotating connecting lug 22 to rotate with the piston shaft of the hydraulic cylinder 21 as the rotation center.

The described tillage wheel 1 is divided into a left tillage wheel 33 and a right tillage wheel 35. The left tillage wheel 33 and the right tillage wheel 35 are installed and used in pairs. 32 and the wheel hub 28 for installation and connection with the drive shaft 34, the wheel rim 32 is arranged coaxially with the wheel hub 28, the wheel rim 32 is only arranged on one side of the wheel hub 28, and the plurality of harrow tooth plates 30 are annular and uniform. A plurality of tine plates 30 are fixed between the rim 32 and the hub 28 along the axis; the surface of the plate surface of the tine plate 30 of the left tiller wheel 33 and the fixed connection point of the tine plate 30 and the surface formed by the central axis At a positive angle of 35 degrees, the surface of the tine plate 30 of the right tillage wheel 35 and the fixed connection point of the tine plate 30 and the surface formed by the central axis are at a negative 35 degree angle. The fixed connection point of the tine plate 30 refers to the tine plate. At any point of the fixed connection between 30 and the wheel rim 32 or the wheel hub 28, each rake tooth plate 30 is provided with a plurality of rake teeth 29; 30 on.

When used for paddy field farming, the hub 28 of the left tillage wheel 33 is fixedly installed on the left drive shaft 34 by bolts, the hub 28 of the right tillage wheel 35 is fixed on the right drive shaft 34 by bolts, and the left tillage wheel 33 and the tines 29 of the right tillage wheel 35 follow the tine plate 30 and are inclined rearward;

After the power output by the engine 11 is shifted through the gearbox 17, it is then transmitted to the transfer gearbox 5 through the transmission shaft 10. The transmission speed ratio of the gearbox 17 can be changed by operating the gearbox lever 18 to realize the adjustment of the gear position; the transfer gear The power output by the box 5 is transmitted to the front axle 2 through the transmission connector 16 and the corner device 19, and the power output by the transfer gearbox 5 is also transmitted to the rear drive gearbox 14 through the rear output drive shaft 15. 13 is transmitted to the rear axle 12 of the vehicle; the steering gear 8 controls the work of the steering hydraulic cylinder 4, and drives the hinged connection seat 3 to rotate, thereby driving the entire front axle 2 to rotate to realize steering control; the drive shaft 34 of the vehicle axle drives the farming wheel to rotate for farming , and walking as a driving wheel, since the harrow tooth plate 30 is in large-area contact with the ground, the tillage wheel will not sink deeply, and the harrow tooth 29 assists in loosening the soil and improves work efficiency; when used for dry land farming, the left tillage wheel 33 The hub 28 is fixedly mounted on the drive shaft 34 on the right by bolts, the hub 28 of the right tillage wheel 35 is mounted on the drive shaft 34 on the left by bolts, and the harrow teeth 29 of the left tillage wheel 33 and the right tillage wheel 35 follow the harrow The tine plates 30 are all inclined forward; since the rake tine plate 30 is in small area or line contact with the ground to loosen the soil, the rake tines 29 follow the rake tine plate 30 to rotate to hoe and dig soil to realize the cultivation of hard soil in dry land. When it is necessary to adjust the tillage depth, operate the rear-drive shift lever 9 to change the transmission speed ratio of the rear-drive gearbox 14 to realize the rotational speed of the tilling wheel 1 on the rear axle 12 of the vehicle, and let the rotational speed of the tilling wheel 1 on the rear axle 12 There is a speed difference with the rotation speed of the tillage wheel 1 on the front axle 2 of the vehicle, so as to realize the adjustment of the tillage depth. The output power transmitted by the angle device 19 is transmitted to the driving gear 23 through the transmission gear 27. The rotation of the driving gear 23 drives the hexagonal shaft 25 to drive the rotary tiller 26 to rotate and cultivate. The lift of the rotary tiller 26 is controlled by the hydraulic cylinder 21. The piston shaft of the cylinder 21 can be rotated on the rotating connecting lug 22, and the piston shaft of the hydraulic cylinder 21 is stretched out, and the rotating connecting lug 22 together with the hexagonal shaft 25 slides down in the driving gear 23, and drives the rotary tiller vertical knife 26 to move down, The adjustment of the tillage depth is realized; when the rotary tiller blade 26 needs to be lifted up, the piston shaft of the hydraulic cylinder 21 retracts, pulling the rotating connecting lug 22 together with the hexagonal shaft 25 to slide upward in the driving gear 23 .

Embodiment 3

A rear-engine front and rear drive tiller, comprising a front axle 2, a frame 6, an engine 11 and a rear axle 12, the rear axle 12 is installed under the rear side of the frame 6; the engine 11 is installed on the rear side of the rack 6; the front axle 2 is fixedly connected with a hinged connection seat 3, and the front axle 2 is hingedly installed under the front side of the rack 6 through the hinged connection seat 3, on the rack 6 A steering hydraulic cylinder 4 for controlling the rotation of the hinged connection base 3 and a steering gear 8 for controlling the operation of the steering hydraulic cylinder 4 are installed. The cylinder seat of the steering hydraulic cylinder 4 is hinged with the frame 6, and the piston shaft of the steering hydraulic cylinder 4 is hinged The connecting seat 3 is hinged; the drive shafts of the front axle 2 and the rear axle 12 are both installed with the tillage wheel 1; the frame 6 is installed with a transfer gearbox 5 and a rear drive gearbox 14, The transmission shaft 10 for power transmission is connected with the engine 11, the front side of the transfer gearbox 5 is connected with the power input end of the front axle 2 through the transmission connector 16 for power transmission, and the rear side of the transfer gearbox 5 is connected with the power input end of the front axle 2. The rear output transmission shaft 15 for transmitting power is connected with the rear drive gearbox 14, and the rear drive gearbox 14 is connected with the power input end of the rear axle 12 through the rear drive transmission shaft 13; Rear-drive shift lever 9 that changes the rotational speed of the rear-drive.

A gearbox 17 is installed between the transmission shaft 10 and the engine 11, and the output power of the engine 11 is shifted from the transmission shaft 10 to the transfer gearbox 5 after being shifted by the gearbox 17. The engine 11 outputs the transmission lever 18 of the power rotational speed.

The said tilling wheel 1 is divided into a left tilling wheel 33 and a right tilling wheel 35, the left tilling wheel 33 and the right tilling wheel 35 are installed and used in pairs, and a left tilling wheel 33 and a right tilling wheel 35 are installed on the left drive shaft 34. , a left tillage wheel 33 and a right tillage wheel 35 are also installed on the right drive shaft 34; The wheel hub 28, the wheel rim 32 is arranged coaxially with the wheel hub 28, the wheel rim 32 is only arranged on one side of the wheel hub 28, the plurality of rake tooth plates 30 are arranged in a ring shape, and the plurality of rake tooth plates 30 are arranged along the axis The square is fixed between the rim 32 and the hub 28; the plate surface of the harrow tooth plate 30 of the left tillage wheel 33 forms a positive 35 degree angle with the fixed connection point of the harrow tooth plate 30 and the surface formed by the central axis, and the harrow of the right tillage wheel 35 The surface formed by the plate surface of the tine plate 30 and the fixed connection point and the central axis of the rake tine plate 30 is at minus 35 degrees. The fixed connection point of the rake tine plate 30 refers to the fixed connection between the rake tine plate 30 and the rim 32 or the hub 28 At any point, each rake tine plate 30 is provided with a plurality of rake tines 29 ; the rake tines 29 are detachably installed on the rake tine plate 30 through mounting bolts 31 . A pair of left tillage wheels 33 and right tillage wheels 35 are respectively installed on the left and right drive shafts 34, and the left tillage wheels 33 and the right tillage wheels 35 are butted; Outside, the right tillage wheel 35 is installed on the inside, the left tillage wheel 33 and the hub 28 of the right tillage wheel 35 are fixedly mounted on the drive shaft 34 by bolts, and the harrow teeth 29 of the left tillage wheel 33 and the right tillage wheel 35 follow the harrow tooth plate 30 are inclined rearward; the drive shaft 34 of the axle drives the tilling wheel to rotate and cultivate, and it travels as a driving wheel. Since the harrow tooth plate 30 is in large-area contact with the ground, the tilling wheel will not sink deeply, and the harrow tooth 29 assists the tillage. Loosen the soil and improve work efficiency; when used for dry land farming, the left tillage wheel 33 is installed on the inside, the right tillage wheel 35 is installed on the outside, and the hubs 28 of the left tillage wheel 33 and the right tillage wheel 35 are fixed on the drive shaft by bolts 34, the raking teeth 29 of the left tilling wheel 33 and the right tilling wheel 35 are inclined forward following the raking tines 30; since the raking tines 30 are in small area or line contact with the ground to loosen the soil, the raking teeth 29 follow the raking teeth The plate 30 rotates with a hoe to dig soil, so as to realize the cultivation of hard soil in dry land.

The dryland farming experimental data of the rear-engine front- and rear-drive tillage machine are recorded as follows.

Test site: The test site of a factory in Wuzhou City on March 18, 2022 (the land compacted by the road roller).

According to incomplete statistics, the tillage depth of 60 cm can be achieved by controlling the speed difference between the tilling wheels on the front axle and the rear axle (the front tilling wheel rotates fast and the rear tilling wheel rotates slowly).

The above description is not a limitation to the application, and the application is not limited to the above-mentioned examples. Those of ordinary skill in the art, within the essential scope of the application, make changes, modifications, additions or replacements, all should belong to the application scope of protection.

Claims (8)

1. A front and rear drive tiller with a rear engine, comprising a front axle (2), a frame (6), an engine (11) and a rear axle (12), wherein the rear axle (12) is mounted on the Below the rear side of the frame (6); characterized in that: the engine (11) is installed on the rear side of the frame (6); the front axle (2) is fixedly connected with a hinged connection seat (3) ), the front axle (2) is hingedly installed under the front side of the frame (6) through the hinged connection seat (3), and the frame (6) is installed with a steering hydraulic cylinder ( 4) and the steering gear (8) installed to control the work of the steering hydraulic cylinder (4); tilling wheels (1) are installed on the drive shafts of the front axle (2) and the rear axle (12); the frame (6) ) is installed with a transfer gearbox (5) and a rear drive gearbox (14), the transfer gearbox (5) is connected with the engine (11) through a transmission shaft (10) for transmitting power, and the transfer gearbox ( The front side of 5) is connected with the power input end of the front axle (2) through the transmission connector (16) for power transmission, and the rear side of the transfer gearbox (5) is connected with the rear output drive shaft for power transmission (15) is connected to the rear drive gearbox (14), and the rear drive gearbox (14) is connected to the power input end of the rear axle (12) through the rear drive transmission shaft (13); the rear drive gearbox (14) is installed on the There is a rear-drive shift lever (9) for operating to change the rotational speed of the rear-drive, which is used to change the rotation speed of the tillage wheel (1) on the rear axle (12) of the vehicle, forming the same relationship with the tillage wheel (1) on the front axle (2) of the vehicle The speed difference is adjusted by the size of the speed difference to adjust the tillage depth. 2. The rear-engine front-rear drive tiller according to claim 1, characterized in that: the transfer case (5) is provided with a transfer case shift lever (7) for operating to change the transmission speed ). 3. The rear-engine front and rear drive tiller according to claim 1, characterized in that: a gearbox (17) is installed between the transmission shaft (10) and the engine (11), and the engine (11) has a gearbox (17). The output power is transmitted from the transmission shaft (10) to the transfer gearbox (5) after being shifted by the gearbox (17). (18). 4. The rear-engine front and rear drive tiller according to claim 1, characterized in that: the power input end of the front axle (2) is vertically installed and connected with a corner device (19), and the corner device (19) ) of the power input shaft is connected with the transfer gear box (5) through the transmission connector (16), and the power output shaft of the corner device (19) is connected downward with the power input end of the front axle (2) upward; the A gear mounting seat (24) is arranged on the hinged connecting seat (3), a driving gear (23) is mounted in the gear mounting seat (24), and the driving gear (23) is connected with a gear mounted on the power output shaft of the corner device (19). The transmission gear (27) is meshed; the center of the driving gear (23) is provided with a hexagonal through hole, a hexagonal shaft (25) is slidably installed in the hexagonal through hole, and the bottom of the hexagonal shaft (25) is fixedly connected with a rotary tiller for rotating cultivated land A rotating connecting lug (22) is fixed on the top of the vertical knife (26) and the hexagonal shaft (25); the front end of the hinged connecting seat (3) is provided with a forwardly extending installation lug plate (20), which is installed on the installation lug plate (20). There is a hydraulic cylinder (21) for controlling the lifting and lowering of the hexagonal shaft (25), and the piston shaft of the hydraulic cylinder (21) is connected with the rotating connecting ear (22) to limit rotation. 5. The rear-engine front and rear drive tiller according to claim 1, characterized in that: the tiller wheel (1) comprises a wheel hub (28) for connecting with the drive shaft (34), and also comprises a rake The toothed plate (30) and the wheel rim (32) are arranged coaxially with the wheel hub (28). (30) The wheel rim (32) is fixedly connected with the wheel hub (28) along the axis, and the surface formed by the plate surface of the rake tooth plate (30) and the fixed connection point of the rake tooth plate (30) and the central axis is 30 -45 degree angle, the fixed connection point of the tine plate (30) refers to any point at the fixed connection between the rake tine plate (30) and the rim (32) or the hub (28). ) are provided with a plurality of tines (29). 6 . The rear-engine front and rear drive tiller according to claim 1 , wherein the tines ( 29 ) are detachably mounted on the tines ( 30 ) through mounting bolts ( 31 ). 7 . 7. The rear-engine front and rear drive tiller according to claim 1, characterized in that: the tilling wheels are divided into left tilling wheels (33) and right tilling wheels (35), left tilling wheels (33) and The right tillage wheels (35) are installed and used in pairs. Both the left tillage wheel (33) and the right tillage wheel (35) include a wheel hub (28), a harrow tooth plate (30) and a wheel rim (32). 32) Arranged coaxially with the wheel hub (28), a plurality of rake tooth plates (30) are arranged evenly in a ring shape, and the plurality of harrow tooth plates (30) are fixed on the wheel rim (32) and the wheel hub (28) along the axis. between; the surface of the tine plate (30) of the left tillage wheel (33) forms a positive 30-45 degree angle with the surface formed by the fixed connection point of the tine plate (30) and the central axis, and the surface of the right tillage wheel (35) The plate surface of the rake tine plate (30) forms an angle of minus 30-45 degrees with the surface formed by the fixed connection point of the rake tine plate (30) and the central axis. 8 . The rear-engine front and rear drive tiller according to claim 1 , wherein the rear drive gearbox ( 14 ) adopts a continuously variable gearbox. 9 .

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