CN114616935A

CN114616935A - Front-rear drive tiller with rear engine

Info

Publication number: CN114616935A
Application number: CN202210281861.6A
Authority: CN
Inventors: 张柱芬
Original assignee: Guangxi Youxing Technology Co ltd
Current assignee: Guangxi Youxing Technology Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-06-14

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

Front-rear drive tiller with rear engine

Technical Field

The utility model relates to the technical field of agricultural farming equipment, in particular to a front-rear driving tiller with a rear engine.

Background

According to a normal planting mode, before crops and economic crops are planted, a land block for planting needs to be ploughed, and the planted land block can be divided into a paddy field and a dry land according to the existence of irrigation and planting categories. With the development of scientific technology, agriculture is developed from manual agriculture to mechanized and automatic modes, the cultivator is also rapidly developed, and the agricultural efficiency is improved.

Research shows that when dry land cultivation is carried out, a traditional four-wheel tractor is generally adopted to drive and pull a rotary tillage machine to loosen the soil, the length of a rotary blade of the rotary tillage machine is fixed, and the rotary tillage soil loosening depth is generally not larger than the length of the rotary blade. However, related professional technical reports show that some crops can be deeply cultivated by deep ploughing, so that the water and the drought can be preserved, and the yield is improved. However, the power of the existing small and medium-sized tractor is limited, the tractor cannot directly pull and drive the overlong rotary tillage blades to cultivate, the cultivation depth of the common rotary tillage blades is not more than 15 cm, and the agricultural requirements are difficult to meet.

Disclosure of Invention

The utility model aims at providing a front-rear driving tiller with a rear engine; the front and rear axles of the front and rear driving tiller are provided with tillage wheels, the tillage wheels are used as walking driving wheels and tillage wheels, the tillage efficiency is high, the operation is convenient, and the tillage depth can be adjusted by changing the rotation speed difference of the front and rear tillage wheels.

The technical scheme of the utility model is realized like this:

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, a steering hydraulic cylinder for controlling the hinged connecting seat to rotate and a steering gear for controlling the steering hydraulic cylinder to work are installed on the rack, a cylinder seat of the steering hydraulic cylinder is hinged with the rack, and a piston shaft of the steering hydraulic cylinder is hinged with the hinged connecting seat; 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 for transmitting power, the front side of the transfer gearbox is connected with the power input end of the front axle of the vehicle through a transmission connector for transmitting power, the transmission connector is a universal transmission shaft, the rear side of the transfer gearbox is connected with the rear-drive gearbox through a rear output transmission shaft for transmitting power, and the rear-drive gearbox is connected with the power input end of the rear axle of the vehicle through the rear-drive transmission shaft; the rear-drive gearbox is provided with a rear-drive speed-changing control lever for operating and changing the rear-drive rotating speed, and the rear-drive gearbox is used for changing the rotating speed of the tillage wheels of the rear axle of the vehicle, so that the rotating speed of the tillage wheels of the rear axle of the vehicle and the rotating speed of the tillage wheels of the front axle of the vehicle have a speed difference, and the tillage depth adjustment is realized. In order to facilitate the operation, a cab and a brake system are correspondingly arranged on the frame.

Further preferred is: and a transfer case gear shifting operating lever for operating and changing the transmission speed is arranged on the transfer gear case.

Further preferred is: a gearbox is arranged between the transmission shaft and the engine, the power output by the engine is transmitted to the transfer gearbox from the transmission shaft after the speed of the gearbox is changed, and a gearbox operating lever for operating and changing the rotating speed of the power output by the engine is arranged on the gearbox.

Further preferably: the power input end of the front axle of the vehicle is vertically and fixedly connected with a corner device, a power input shaft of the corner device is connected with a transfer gear box through a transmission connector, the transmission connector is a connecting flange, and a power output shaft of the corner device is connected with the power input end of the front axle of the vehicle; the hinged connecting seat is provided with a gear mounting seat, a driving gear is mounted in the gear mounting seat, and the driving gear is meshed with a transmission gear mounted on a power output shaft of the corner device; a hexagonal through hole is formed in the center of the driving gear, a hexagonal shaft penetrates through the hexagonal through hole and is slidably mounted in the hexagonal through hole, a rotary tillage vertical cutter for rotary tillage is fixedly connected to the bottom of the hexagonal shaft, and a rotary connecting lug is fixed to the top of the hexagonal shaft; the hinged connection base is provided with a mounting lug plate extending forwards, a hydraulic cylinder used for controlling the hexagonal shaft to lift is mounted on the mounting lug plate, and a piston shaft of the hydraulic cylinder is connected with the rotary connection lug in a limiting and rotating mode. The piston shaft of pneumatic cylinder is rotatable to be worn to establish on rotating the engaging lug, and stop nut is installed to the bottom of the piston shaft of pneumatic cylinder, avoids the piston shaft of pneumatic cylinder to break away from rotating the engaging lug, and the last drive gear of the power output shaft of corner ware gives drive gear with power transmission, and drive gear drive hexagonal axle rotates, and the hexagonal axle drives to rotate the engaging lug and uses the piston shaft of pneumatic cylinder to rotate as the rotation center.

Further preferred is: the cultivation wheel comprises a hub used for being mounted and connected with a driving shaft, and further comprises rake toothed plates and a wheel rim, wherein the wheel rim and the hub are coaxially arranged, the wheel rim is arranged on one side or two sides of the hub respectively, the rake toothed plates are annularly and uniformly distributed, the wheel rim and the hub are fixedly connected by the rake toothed plates along the axis direction, the surface of each rake toothed plate and the fixed connection point and the central axis of the rake toothed plate form an angle of 30-45 degrees, the fixed connection point of each rake toothed plate refers to any point of the fixed connection part of the rake toothed plate and the wheel rim or the hub, each rake toothed plate is provided with a plurality of rake teeth, the rake toothed plates and the rake teeth can be integrally formed and also can be split, namely the rake teeth are detachably mounted on the rake toothed plates through mounting bolts, the lower parts of the rake teeth are attached to the surface of the rake toothed plates and then fixed through the mounting bolts, and the upper parts of the rake teeth extend upwards along the surface of the rake toothed plates, the rake teeth are convenient to replace and maintain in a split mode.

Further preferred is: the rear-drive gearbox adopts a stepless gearbox, so that the tillage wheels driven by the rear axle of the vehicle can obtain free rotating speed, the rotating speed difference between the front tillage wheels and the rear tillage wheels can be changed, and the tillage depth can be adjusted.

When the wheel rim is only arranged on one side of the wheel hub, the cultivating wheels are divided into a left cultivating wheel and a right cultivating wheel, the left cultivating wheel and the right cultivating wheel are installed and used in pairs, the left cultivating wheel and the right cultivating wheel respectively comprise the wheel hub, the rake toothed plates and the wheel rim, the wheel rim and the wheel hub are coaxially arranged, the rake toothed plates are annularly and uniformly distributed and arranged, and the rake toothed plates are fixed between the wheel rim and the wheel hub along the axis direction; the surface of the rake toothed plate of the left cultivating wheel forms an angle of positive 30-45 degrees with the fixed connection point of the rake toothed plate and the central axis, and the surface of the rake toothed plate of the right cultivating wheel forms an angle of negative 30-45 degrees with the fixed connection point of the rake toothed plate and the central axis. When the wheel rims are respectively arranged on two sides of the wheel hub, the wheel hub is arranged in the center, and the tillage wheels can be not divided into left tillage wheels and right tillage wheels, namely the left tillage wheels and the right tillage wheels have the same structure.

The front-rear driving tiller with the rear engine has the advantages that:

1. the front axle of the front-rear drive tiller with the rear engine is hinged and mounted below the front side of the frame, the rear axle of the front-rear drive tiller is mounted below the rear side of the frame, steering is controlled by a steering gear and a steering hydraulic cylinder, and operation is light; the engine is arranged at the rear side of the frame, the output power of the engine is transmitted to the front axle and the rear axle of the vehicle through the transfer gear box, the front axle and the rear axle of the vehicle are provided with tillage wheels with the same structure, the tillage wheels are used as walking driving wheels and tillage wheels, the rotation speed of the tillage wheels on the rear axle of the vehicle is changed by operating the rear-drive gear box through the rear-drive gear shift control lever, and the adjustment of tillage depth is realized by controlling the rotation speed difference of the tillage wheels on the front axle and the rear axle of the vehicle; and when hard soil is planted in dry land, one-time cultivation can be completed, and the mode that the plough is firstly carried out and then the harrow is carried out in the traditional hard soil cultivation is improved.

2. The adopted tillage wheels are detachably arranged on a driving shaft of the axle through the wheel hub to drive the tillage wheels to rotationally cultivate, and the tillage wheels are taken as driving wheels to walk, so that a special rotary tillage machine is not required to be equipped for cultivation, and a large rubber-wheel tractor unchanged for a century is replaced. Owing to set up harrow pinion rack and rake teeth, through the installation direction of adjustment farming wheel, make the rake teeth follow the harrow pinion rack and be forward or backward slope form, realized installing and realize the farming of paddy field harrow field tillage and dry land loosening soil on same drive shaft, and farming is efficient, and under the equal farming effect, the oil consumption is lower.

3. The rotary tillage vertical knife controlled to ascend and descend through the hydraulic cylinder is installed in front of the space between the tillage wheels on the two sides of the front axle of the vehicle, the rotary tillage vertical knife is driven by power transmitted and output by the angle turning device, and the tillage missing of the soil between the tillage wheels on the two sides of the front axle of the vehicle is avoided, the repeated tillage is not needed, and the tillage efficiency is further improved.

4. The front-rear driving tiller with the rear engine can adapt to cultivation of paddy fields and dry lands, can also adapt to cultivation of wetlands, and adopts cultivation wheels which are not easy to bond clay and weeds.

Drawings

FIG. 1 is a schematic structural view of a front and rear drive tiller with a rear engine according to a first embodiment;

FIG. 2 is a schematic bottom view of FIG. 1;

FIG. 3 is a schematic perspective view of a front and rear drive tiller with a rear engine according to an embodiment;

FIG. 4 is a schematic view showing the construction of a front and rear drive tiller with a rear engine according to a second embodiment;

FIG. 5 is a schematic perspective view of a front and rear drive tiller with a rear engine according to a second embodiment;

FIG. 6 is a schematic view of a mounting pattern of the tilling wheel;

FIG. 7 is a schematic view of a second mounting pattern of the tilling wheel;

FIG. 8 is a schematic view of the left tilling wheel;

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

FIG. 10 is a perspective view of the left tilling wheel;

FIG. 11 is a schematic view of the right tilling wheel;

FIG. 12 is a schematic top view of FIG. 10;

FIG. 13 is a perspective view of the right tilling wheel;

the part names of the sequence numbers in the figure are:

1. tillage wheels; 2. a front axle of the vehicle; 3. the hinged connecting seat; 4. a steering hydraulic cylinder; 5. a transfer gearbox; 6. a frame; 7. a transfer case shift lever; 8. a steering gear; 9. a rear drive shift lever; 10. a drive shaft; 11. an engine; 12. a rear axle is turned; 13. a rear drive transmission shaft; 14. a rear drive gearbox; 15. a rear output transmission shaft; 16. a drive connector; 17. a gearbox; 18. a gearbox lever; 19. a corner device; 20. mounting an ear plate; 21. a hydraulic cylinder; 22. the connecting lug is rotated; 23. a drive gear; 24. a gear mounting seat; 25. a hexagonal shaft; 26. rotary tillage vertical cutter; 27. a transmission gear; 28. a hub; 29. the harrow teeth 30, the harrow teeth plates 31, the mounting bolts 32, the wheel rims 33, the left tillage wheels 34, the driving shafts 35 and the right tillage wheels.

Detailed Description

To describe the technology of the present application in more detail, the technology of the present application is further described below with reference to the accompanying drawings and examples.

Example one

A front-rear drive tiller with a rear engine comprises a front axle 2, a frame 6, an engine 11 and a rear axle 12, wherein the rear axle 12 is arranged below the rear side of the frame 6; the engine 11 is arranged at the rear side of the frame 6; the front axle 2 of the vehicle is fixedly connected with a hinged connection seat 3, the front axle 2 of the vehicle is hinged below the front side of a frame 6 through the hinged connection seat 3, a steering hydraulic cylinder 4 for controlling the hinged connection seat 3 to rotate and a steering gear 8 for controlling the steering hydraulic cylinder 4 to work are arranged on the frame 6, a cylinder seat of the steering hydraulic cylinder 4 is hinged with the frame 6, and a piston shaft of the steering hydraulic cylinder 4 is hinged with the hinged connection seat 3; tillage wheels 1 are arranged on the driving shafts of the front axle 2 and the rear axle 12; a transfer gear box 5 and a rear-drive gearbox 14 are mounted on the frame 6, the transfer gear box 5 is connected with an engine 11 through a transmission shaft 10 for transmitting power, the front side of the transfer gear box 5 is connected with the power input end of the front axle 2 through a transmission connector 16 for transmitting power, the rear side of the transfer gear box 5 is connected with the rear-drive gearbox 14 through a rear output transmission shaft 15 for transmitting power, and the rear-drive gearbox 14 is connected with the power input end of the rear axle 12 through a rear-drive transmission shaft 13; the rear-drive transmission 14 is provided with a rear-drive shift lever 9 for operating to change the rear-drive rotational speed. The rear-drive gear shifting control lever 9 is operated, the rear-drive gearbox 14 is used for changing the rotating speed of the cultivating wheels 1 of the rear axle 12, so that the rotating speed of the cultivating wheels 1 of the rear axle 12 and the rotating speed of the cultivating wheels 1 of the front axle 2 have a speed difference, and cultivation depth adjustment is achieved.

And a transfer case gear shifting operating rod 7 for operating and changing the transmission speed is arranged on the transfer gear case 5.

The cultivation wheel 1 comprises a hub 28 used for being connected with a driving shaft 34 in an installing mode, and further comprises rake teeth plates 30 and a rim 32, the rim 32 and the hub 28 are arranged coaxially, the rim 32 is arranged on two sides of the hub 28 respectively, the hub 28 is arranged in the center, the rake teeth plates 30 are arranged in an annular and uniform mode, the rim 32 and the hub 28 are fixedly connected by the rake teeth plates 30 along the axis direction, the fixed connection point of the plate surface of each rake teeth plate 30 and the central axis form an angle of 30-45 degrees, preferably an angle of 35 degrees, the fixed connection point of each rake teeth plate 30 refers to any one point of the fixed connection point of each rake teeth plate 30 and the rim 32 or the hub 28, and each rake teeth plate 30 is provided with a plurality of rake teeth 29.

When the hub 28 is used for paddy field cultivation, the hub is fixedly arranged on the driving shaft 34 through bolts, and the harrow teeth 29 are inclined backwards along with the harrow teeth plate 30; the power output by the engine 11 is transmitted to the transfer case 5 through the transmission shaft 10, and the transfer case gear shift operating lever 7 can change the transmission speed ratio of the transfer case 5 to realize the adjustment of gears; the power output by the transfer gear box 5 is transmitted to the front axle 2 through the transmission connector 16, and the power output by the transfer gear box 5 is also transmitted to the rear-drive gearbox 14 through the rear output transmission shaft 15 and is transmitted to the rear axle 12 through the rear-drive transmission shaft 13; the rotating direction machine 8 controls the work of the steering hydraulic cylinder 4 to drive the hinged connecting seat 3 to rotate, so that the whole front axle 2 is driven to rotate to realize steering control; the driving shaft 34 of the axle drives the tillage wheel 1 to do rotary tillage and to walk as a driving wheel, and the tillage wheel cannot sink deeply because the harrow tooth plate 30 is in large-area contact with the ground, and the harrow teeth 29 assist in tillage and soil loosening, so that the working efficiency is improved; when the cultivator is used for dry-land cultivation, the cultivation wheels are installed in the direction of paddy-field cultivation, namely the cultivation wheels are installed by turning 180 degrees, the rake teeth 29 are inclined forwards along with the rake tooth plates 30, the driving shaft 34 of the axle drives the cultivation wheels to rotate for cultivation and serve as driving wheels to walk, and the rake teeth 29 rotate to hoe and dig soil along with the rake tooth plates 30 due to the fact that the rake tooth plates 30 are in small-area or line contact with the ground to loosen the soil, so that the cultivation of hard soil in dry land is realized. When the tillage depth needs to be adjusted, the rear-drive gear shift lever 9 is operated to change the transmission speed ratio of the rear-drive gearbox 14, so that the rotation speed of the tillage wheels 1 on the rear axle 12 of the vehicle is realized, the rotation speed of the tillage wheels 1 on the rear axle 12 of the vehicle is different from the rotation speed of the tillage wheels 1 on the front axle 2 of the vehicle, and the adjustment of the tillage depth is realized.

Example two

A front-rear drive tiller with a rear engine comprises a front axle 2, a frame 6, an engine 11 and a rear axle 12, wherein the rear axle 12 is arranged below the rear side of the frame 6; the engine 11 is arranged at the rear side of the frame 6; the front axle 2 of the vehicle is fixedly connected with a hinged connection seat 3, the front axle 2 of the vehicle is hinged below the front side of a frame 6 through the hinged connection seat 3, a steering hydraulic cylinder 4 for controlling the hinged connection seat 3 to rotate and a steering gear 8 for controlling the steering hydraulic cylinder 4 to work are arranged on the frame 6, a cylinder seat of the steering hydraulic cylinder 4 is hinged with the frame 6, and a piston shaft of the steering hydraulic cylinder 4 is hinged with the hinged connection seat 3; tillage wheels 1 are arranged on the driving shafts of the front axle 2 and the rear axle 12; a transfer gear box 5 and a rear-drive gearbox 14 are mounted on the frame 6, the transfer gear box 5 is connected with an engine 11 through a transmission shaft 10 for transmitting power, the front side of the transfer gear box 5 is connected with the power input end of the front axle 2 through a transmission connector 16 for transmitting power, the rear side of the transfer gear box 5 is connected with the rear-drive gearbox 14 through a rear output transmission shaft 15 for transmitting power, and the rear-drive gearbox 14 is connected with the power input end of the rear axle 12 through a rear-drive transmission shaft 13; the rear-drive transmission 14 is provided with a rear-drive shift lever 9 for operating to change the rear-drive rotational speed.

A gearbox 17 is arranged between the transmission shaft 10 and the engine 11, the power output by the engine 11 is transmitted to the transfer gearbox 5 from the transmission shaft 10 after being changed in speed by the gearbox 17, and a gearbox operating lever 18 for operating and changing the rotating speed of the power output by the engine 11 is arranged on the gearbox 17.

The power input end of the front axle 2 is vertically and fixedly connected with a corner device 19, a power input shaft of the corner device 19 is connected with the transfer gear box 5 through a transmission connector 16, and a power output shaft of the corner device 19 is connected with the power input end of the front axle 2; the hinged connecting seat 3 is provided with a gear mounting seat 24, a driving gear 23 is mounted in the gear mounting seat 24, and the driving gear 23 is meshed with a transmission gear 27 mounted on a power output shaft of the corner device 19; a hexagonal through hole is formed in the center of the driving gear 23, a hexagonal shaft 25 is installed in the hexagonal through hole in a penetrating and sliding mode, a rotary tillage vertical cutter 26 used for rotary tillage is fixedly connected to the bottom of the hexagonal shaft 25, and a rotary connecting lug 22 is fixed to the top of the hexagonal shaft 25; the hinged connecting seat 3 is provided with a mounting lug plate 20 extending forwards, the mounting lug plate 20 is provided with a hydraulic cylinder 21 used for controlling the hexagonal shaft 25 to lift, and a piston shaft of the hydraulic cylinder 21 is in limited rotary connection with the rotary connecting lug 22. The piston shaft of the hydraulic cylinder 21 can be rotatably arranged on the rotary connecting lug 22 in a penetrating mode, the bottom end of the piston shaft of the hydraulic cylinder 21 is provided with a limiting nut, the piston shaft of the hydraulic cylinder 21 is prevented from being separated from the rotary connecting lug 22, a transmission gear 27 on a power output shaft of the angle turning device 19 transmits power to a driving gear 23, the driving gear 23 drives a hexagonal shaft 25 to rotate, and the hexagonal shaft 25 drives the rotary connecting lug 22 to rotate by taking the piston shaft of the hydraulic cylinder 21 as a rotation center.

The cultivation wheel 1 is divided into a left cultivation wheel 33 and a right cultivation wheel 35, the left cultivation wheel 33 and the right cultivation wheel 35 are installed and used in pairs, the left cultivation wheel 33 and the right cultivation wheel 35 respectively comprise a harrow tooth plate 30, a wheel rim 32 and a wheel hub 28 used for being installed and connected with a driving shaft 34, the wheel rim 32 and the wheel hub 28 are coaxially arranged, the wheel rim 32 is only arranged on one side of the wheel hub 28, the plurality of harrow tooth plates 30 are uniformly distributed in an annular shape, and the plurality of harrow tooth plates 30 are fixed between the wheel rim 32 and the wheel hub 28 along the axial direction; the surface of the rake tooth plate 30 of the left cultivating wheel 33 forms an angle of plus 35 degrees with the fixed connection point of the rake tooth plate 30 and the central axis, the surface of the rake tooth plate 30 of the right cultivating wheel 35 forms an angle of minus 35 degrees with the fixed connection point of the rake tooth plate 30 and the central axis, the fixed connection point of the rake tooth plate 30 refers to any one point at the fixed connection point of the rake tooth plate 30 and the rim 32 or the hub 28, and each rake tooth plate 30 is provided with a plurality of rake teeth 29; the rake teeth 29 are detachably arranged on the rake tooth plate 30 through mounting bolts 31.

When the tillage machine is used for paddy field tillage, the hub 28 of the left tillage wheel 33 is fixedly mounted on the left driving shaft 34 through bolts, the hub 28 of the right tillage wheel 35 is fixedly mounted on the right driving shaft 34 through bolts, and the harrow teeth 29 of the left tillage wheel 33 and the right tillage wheel 35 are inclined backwards along with the harrow teeth plate 30;

the power output by the engine 11 is transmitted to the transfer gear box 5 through the transmission shaft 10 after being changed in speed through the transmission box 17, and the transmission speed ratio of the transmission box 17 can be changed by operating the transmission box operating lever 18, so that the gear is adjusted; the power output by the transfer gear 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 gear box 5 is also transmitted to the rear-drive gearbox 14 through the rear output transmission shaft 15 and is transmitted to the rear axle 12 of the vehicle through the rear-drive transmission shaft 13; the rotating direction machine 8 controls the work of the steering hydraulic cylinder 4 to drive the hinged connecting seat 3 to rotate, so that the whole front axle 2 is driven to rotate to realize steering control; the driving shaft 34 of the axle drives the tillage wheels to do rotary tillage and the tillage wheels are used as driving wheels to walk, and the tillage wheels cannot sink deeply because the harrow tooth plates 30 are in large-area contact with the ground, and the harrow teeth 29 assist in tillage and soil loosening, so that the working efficiency is improved; when the cultivator is used for dry land cultivation, the hub 28 of the left cultivation wheel 33 is fixedly mounted on the right driving shaft 34 through bolts, the hub 28 of the right cultivation wheel 35 is fixedly mounted on the left driving shaft 34 through bolts, and the harrow teeth 29 of the left cultivation wheel 33 and the right cultivation wheel 35 are inclined forwards along with the harrow teeth plate 30; because the harrow teeth plate 30 loosens the soil in a small area or line contact with the ground, the harrow teeth 29 dig the soil by rotating the hoe along with the harrow teeth plate 30, and the cultivation of hard soil in dry land is realized. When the tilling depth needs to be adjusted, the rear-drive shift control lever 9 is operated to change the transmission speed ratio of the rear-drive gearbox 14, so that the rotating speed of the tilling wheels 1 on the rear axle 12 of the vehicle is realized, the rotating speed of the tilling wheels 1 on the rear axle 12 of the vehicle is different from the rotating speed of the tilling wheels 1 on the front axle 2 of the vehicle, and the tilling depth is adjusted. The power transmitted and output by the angle turning 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 tillage vertical cutter 26 to rotate for tillage, the rotary tillage vertical cutter 26 is lifted, the piston shaft of the hydraulic cylinder 21 can rotate on the rotary connecting lug 22 under the control of the hydraulic cylinder 21, the piston shaft of the hydraulic cylinder 21 extends out, the rotary connecting lug 22 and the hexagonal shaft 25 slide downwards in the driving gear 23 to drive the rotary tillage vertical cutter 26 to move downwards, and the tillage depth is adjusted; when it is desired to lift the rotary blade 26, the piston shaft of the hydraulic cylinder 21 is retracted, pulling the rotary engaging lug 22 together with the hexagonal shaft 25 to slide upward in the drive gear 23.

EXAMPLE III

The tillage wheels 1 are divided into left tillage wheels 33 and right tillage wheels 35, the left tillage wheels 33 and the right tillage wheels 35 are installed in pairs for use, one left tillage wheel 33 and one right tillage wheel 35 are installed on a left driving shaft 34, and one left tillage wheel 33 and one right tillage wheel 35 are also installed on a right driving shaft 34; the left cultivating wheel 33 and the right cultivating wheel 35 respectively comprise a rake toothed plate 30, a rim 32 and a hub 28 for being mounted and connected with a driving shaft 34, the rim 32 and the hub 28 are coaxially arranged, the rim 32 is only arranged on one side of the hub 28, the rake toothed plates 30 are uniformly distributed in an annular shape, and the rake toothed plates 30 are fixed between the rim 32 and the hub 28 along the axial direction; the surface of the rake tooth plate 30 of the left cultivating wheel 33 forms an angle of positive 35 degrees with the fixed connection point and the central axis of the rake tooth plate 30, the surface of the rake tooth plate 30 of the right cultivating wheel 35 forms an angle of negative 35 degrees with the fixed connection point and the central axis of the rake tooth plate 30, the fixed connection point of the rake tooth plate 30 refers to any one point at the fixed connection position of the rake tooth plate 30 and the wheel rim 32 or the wheel hub 28, and each rake tooth plate 30 is provided with a plurality of rake teeth 29; the rake teeth 29 are detachably mounted on the rake teeth plate 30 through mounting bolts 31. A pair of left cultivating wheels 33 and right cultivating wheels 35 are respectively arranged on the left driving shaft 34 and the right driving shaft 34, and the left cultivating wheels 33 and the right cultivating wheels 35 are in butt joint; when the tillage machine is used for paddy field tillage, the left tillage wheel 33 is arranged on the outer side, the right tillage wheel 35 is arranged on the inner side, the hubs 28 of the left tillage wheel 33 and the right tillage wheel 35 are fixedly arranged on the driving shaft 34 through bolts, and the harrow teeth 29 of the left tillage wheel 33 and the right tillage wheel 35 are inclined backwards along with the harrow teeth plate 30; the driving shaft 34 of the axle drives the tillage wheels to do rotary tillage and the tillage wheels are used as driving wheels to walk, and the tillage wheels cannot sink deeply because the harrow tooth plates 30 are in large-area contact with the ground, and the harrow teeth 29 assist in tillage and soil loosening, so that the working efficiency is improved; when the tiller is used for dry land tillage, the left tillage wheel 33 is installed on the inner side, the right tillage wheel 35 is installed on the outer side, the hubs 28 of the left tillage wheel 33 and the right tillage wheel 35 are fixedly installed on the driving shaft 34 through bolts, and the rake teeth 29 of the left tillage wheel 33 and the right tillage wheel 35 are inclined forwards along with the rake teeth plate 30; because the rake tooth plate 30 loosens the soil in a small-area or line contact manner with the ground, the rake teeth 29 dig the soil along with the rotation of the rake tooth plate 30, and the cultivation of hard soil in dry land is realized.

The data of the dry land farming experiment of the front and rear drive tiller with the rear engine are recorded as follows.

Test site: a certain factory floor test site (land compacted by a road roller) in 18 Rituzhou city in 3 months and 18 months in 2022.

By incomplete statistics, the tillage depth of 60 cm can be achieved by controlling the rotation speed difference of tillage wheels on the front axle and the rear axle (the rotation speed of the front tillage wheel is high, and the rotation speed of the rear tillage wheel is low).

The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions or substitutions within the spirit and scope of the present application.

Claims

1. A front-rear drive tiller with a rear engine comprises a front vehicle axle (2), a rack (6), an engine (11) and a rear vehicle axle (12), wherein the rear vehicle axle (12) is arranged below the rear side of the rack (6); the method is characterized in that: the engine (11) is arranged on the rear side of the frame (6); the front axle (2) of the vehicle is fixedly connected with a hinged connecting seat (3), the front axle (2) of the vehicle is hinged below the front side of a rack (6) through the hinged connecting seat (3), and the rack (6) is provided with a steering hydraulic cylinder (4) for controlling the hinged connecting seat (3) to rotate and a steering gear (8) for controlling the steering hydraulic cylinder (4) to work; tillage wheels (1) are arranged on the driving shafts of the front axle (2) and the rear axle (12); a transfer gear box (5) and a rear-drive gearbox (14) are mounted on the rack (6), the transfer gear box (5) is connected with an engine (11) through a transmission shaft (10) for transmitting power, the front side of the transfer gear box (5) is connected with the power input end of the front axle (2) through a transmission connector (16) for transmitting power, the rear side of the transfer gear box (5) is connected with the rear-drive gearbox (14) through a rear output transmission shaft (15) for transmitting power, and the rear-drive gearbox (14) is connected with the power input end of the rear axle (12) through a rear-drive transmission shaft (13); the rear-drive gearbox (14) is provided with a rear-drive shift control lever (9) for operating and changing the rear-drive rotating speed, and the rear-drive shift control lever is used for changing the rotating speed of the tillage wheels (1) on the rear axle (12) of the vehicle, forming a rotating speed difference with the tillage wheels (1) on the front axle (2) of the vehicle, and adjusting the tillage depth by using the rotating speed difference.

2. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: and a transfer case gear shifting operating rod (7) for operating and changing the transmission speed is arranged on the transfer gear case (5).

3. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: a gearbox (17) is installed between the transmission shaft (10) and the engine (11), power output by the engine (11) is transmitted to the transfer gearbox (5) from the transmission shaft (10) after being subjected to speed change through the gearbox (17), and a gearbox operating lever (18) used for operating and changing the rotating speed of the power output by the engine (11) is installed on the gearbox (17).

4. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: the power input end of the front axle (2) is vertically and fixedly connected with a corner device (19), a power input shaft of the corner device (19) is connected with the transfer gear box (5) through a transmission connector (16), and a power output shaft of the corner device (19) is downwards and upwards connected with the power input end of the front axle (2); the hinged connection seat (3) is provided with a gear installation seat (24), a driving gear (23) is installed in the gear installation seat (24), and the driving gear (23) is meshed with a transmission gear (27) installed on a power output shaft of the corner device (19); a hexagonal through hole is formed in the center of the driving gear (23), a hexagonal shaft (25) penetrates through the hexagonal through hole in a sliding mode, a rotary tillage vertical cutter (26) used for rotary tillage is fixedly connected to the bottom of the hexagonal shaft (25), and a rotary connecting lug (22) is fixed to the top of the hexagonal shaft (25); the front end of the hinged connecting seat (3) is provided with a mounting lug plate (20) extending forwards, a hydraulic cylinder (21) used for controlling the hexagonal shaft (25) to lift is mounted on the mounting lug plate (20), and a piston shaft of the hydraulic cylinder (21) is connected with the rotary connecting lug (22) in a limiting and rotating mode.

5. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: tillage wheel (1) including wheel hub (28) that is used for being connected with drive shaft (34) erection, still include harrow pinion rack (30) and wheel rim (32), wheel rim (32) arrange with wheel hub (28) axle center, polylith harrow pinion rack (30) are cyclic annular equipartition and set up, polylith harrow pinion rack (30) are along axis with wheel rim (32) and wheel hub (28) fixed connection, the fixed connection point of face and harrow pinion rack (30) of harrow pinion rack (30) personally submit 30-45 degrees angle with the central axis formation, the fixed connection point of harrow pinion rack (30) indicates the arbitrary point of the fixed connection department of harrow pinion rack (30) and wheel rim (32) or wheel hub (28), all set up a plurality of harrow teeth (29) on each harrow pinion rack (30).

6. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: the rake teeth (29) are detachably arranged on the rake teeth plate (30) through mounting bolts (31).

7. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: the cultivation wheel is divided into a left cultivation wheel (33) and a right cultivation wheel (35), the left cultivation wheel (33) and the right cultivation wheel (35) are installed and used in pairs, the left cultivation wheel (33) and the right cultivation wheel (35) comprise a hub (28), rake toothed plates (30) and a rim (32), the rim (32) and the hub (28) are coaxially arranged, the rake toothed plates (30) are uniformly distributed in an annular shape, and the rake toothed plates (30) are fixed between the rim (32) and the hub (28) along the axis direction; the surface of the rake tooth plate (30) of the left cultivating wheel (33) forms an angle of plus 30-45 degrees with the fixed connection point of the rake tooth plate (30) and the central axis, and the surface of the rake tooth plate (30) of the right cultivating wheel (35) forms an angle of minus 30-45 degrees with the fixed connection point of the rake tooth plate (30) and the central axis.

8. A rear-engine, front-rear-drive tiller according to claim 1, characterized in that: the rear-drive gearbox (14) adopts a stepless gearbox.