CN114710980A - Coaxial double-rotary cutter set and rotary cultivator - Google Patents

Coaxial double-rotary cutter set and rotary cultivator Download PDF

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Publication number
CN114710980A
CN114710980A CN202210275711.4A CN202210275711A CN114710980A CN 114710980 A CN114710980 A CN 114710980A CN 202210275711 A CN202210275711 A CN 202210275711A CN 114710980 A CN114710980 A CN 114710980A
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China
Prior art keywords
shaft
rotary tillage
cutter
rotary
bevel gear
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CN202210275711.4A
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Chinese (zh)
Inventor
高建民
金志鹏
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Jiangsu University
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Jiangsu University
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Priority to CN202210275711.4A priority Critical patent/CN114710980A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/10Structural or functional features of the tools ; Theoretical aspects of the cutting action
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08Tools; Details, e.g. adaptations of transmissions or gearings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/082Transmissions; Gearings; Power distribution
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/12Arrangement of the tools; Screening of the tools
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/16Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with special additional arrangements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/14Measures for saving energy, e.g. in green houses

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Power Engineering (AREA)
  • Soil Working Implements (AREA)

Abstract

The invention discloses a coaxial double-rotary cutter group and a rotary cultivator, comprising a forward rotary tillage cutter sleeve shaft, a main cutter shaft, a large bevel gear, a forward rotary tillage cutter, a small bevel gear, a reverse rotary tillage cutter sleeve shaft, an anti-winding device and a reverse rotary tillage cutter; the main cutter shaft is alternately provided with a forward rotary tillage cutter sleeve shaft and a reverse rotary tillage cutter sleeve shaft along the axial direction, the forward rotary tillage cutters are arranged on the forward rotary tillage cutter sleeve shaft, the reverse rotary tillage cutters are arranged on the reverse rotary tillage cutter sleeve shaft, the forward rotary tillage cutter sleeve shaft and the reverse rotary tillage cutter sleeve shaft are connected through a bevel gear set, and the bevel gear set is used for enabling the reverse rotary tillage cutters and the forward rotary tillage cutters to be coaxial and reversely rotated. The forward rotary tillage cutter and the reverse rotary tillage cutter on the main cutter shaft rotate forward and backward simultaneously to offset forward thrust, reduce the phenomenon of sideslip of the tractor, realize two-side driving and inclined placement, improve the working efficiency, increase the tillage area, reduce parasitic power, increase the tillage depth, prolong the service life of the rotary cultivator and prevent mud accumulation.

Description

Coaxial double-rotary cutter set and rotary cultivator
Technical Field
The invention belongs to the technical field of rotary cultivators, and particularly relates to a coaxial double-rotary cutter set and a rotary cultivator.
Background
The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The soil breaking machine has the characteristics of strong soil breaking capacity, flat ground surface after ploughing and the like, so that the soil breaking machine is widely applied; can cut up simultaneously and bury the root stubble below the earth's surface, the seeder operation of being convenient for, for the later stage seeding provides good seedbed, traditional rotary cultivator divide into the unipolar, the biax is two kinds, the unipolar rotary cultivator indicates carries out the rotary tillage of soil through the epaxial rotary blade of a rotary tillage, because the unipolar can't carry out the rotary tillage of repeated soil on same position, long-time rotary tillage can make the degree of depth increase of soil influence the planting depth of seedling, and it is too short to carry out the rotary tillage time on unit rotary tillage working face, it is unobvious to make the effect that the root stubble was gone out to soil again. Although the existing double-shaft rotary cultivator can solve the defects of a single-shaft rotary cultivator, the existing double shafts are mostly driven by an independent driving system, so that the rotary cultivator is large in size and easy to damage.
Therefore, the prior art has the following problems: the long-time rotary tillage of unipolar rotary cultivator can make the degree of depth increase of soil influence the depth of planting of seed, and the rotary cultivator that leads to fast slides, blocks up mud, and carries out the rotary tillage time on unit rotary tillage operation face and too short, can make the not obvious technical problem of effect that the stubble was put out to soil again.
Disclosure of Invention
In order to solve the technical problems, the invention provides a coaxial double-rotary cutter set and a rotary cultivator, which reduce the soil constraint, thereby reducing the power consumption, offsetting the forward thrust as much as possible, reducing the sideslip phenomenon of the tractor, reducing the farming resistance, increasing the tilling depth, reducing the farming time, improving the effect of stubble removal, reducing the mud accumulation, cutting the soil by the short cutter in the forward rotation mode firstly in the small tilling depth, reducing the soil cutting power consumption for cutting the soil in the large tilling depth after the long cutter rotates reversely, reducing the parasitic power for cutting the soil in the reverse rotation mode of the long cutter, and protecting the transmission system of the power source tractor.
The invention is realized by the following technical scheme:
a coaxial double rotary cutter set comprises a forward rotary tillage cutter sleeve shaft, a main cutter shaft, a large bevel gear, a forward rotary tillage cutter, a small bevel gear, a reverse rotary tillage cutter sleeve shaft, an anti-winding device and a reverse rotary tillage cutter;
the main cutter shaft is alternately provided with a forward rotary tillage cutter sleeve shaft and a reverse rotary tillage cutter sleeve shaft along the axial direction, the forward rotary tillage cutter sleeve shaft is arranged on the main cutter shaft through a flat key, the reverse rotary tillage cutter sleeve shaft is arranged on the main cutter shaft through a tapered roller bearing, the forward rotary tillage cutter is arranged on the forward rotary tillage cutter sleeve shaft, the reverse rotary tillage cutter is arranged on the reverse rotary tillage cutter sleeve shaft, and the reverse rotary tillage cutter is longer than the forward rotary tillage cutter; the forward rotary tillage cutter sleeve shaft and the reverse rotary tillage cutter sleeve shaft are connected through a bevel gear set, the bevel gear set is used for enabling the reverse rotary tillage cutter and the forward rotary tillage cutter to coaxially and reversely rotate, a fixed shaft is arranged on the bevel gear set, an anti-winding device is connected with the fixed shaft, and the anti-winding device is used for cutting weeds on the forward rotary tillage cutter sleeve shaft and the reverse rotary tillage cutter sleeve shaft.
In the above scheme, the bevel gear set comprises a large bevel gear and a small bevel gear; the rotary tillage cutter sleeve shaft and the reverse rotary tillage cutter sleeve shaft are respectively provided with a large bevel gear, a small bevel gear is respectively meshed with the large bevel gear, the fixed shaft is arranged on the small bevel gear, and the anti-winding device is connected with the fixed shaft.
In the scheme, the anti-winding device comprises a spiral single-tooth gear mechanism, a mowing cutter shaft and a mowing blade, wherein the spiral single-tooth gear mechanism is installed on the fixed shaft, one end of the mowing cutter shaft is provided with a gear meshed with the spiral single-tooth gear mechanism, the other end of the mowing cutter shaft is provided with the mowing blade, the small bevel gear rotates to drive the mowing cutter shaft and the mowing blade to rotate, and the mowing blade is used for cutting weeds on the forward rotary tillage cutter sleeve shaft and the reverse rotary tillage cutter sleeve shaft.
A rotary cultivator comprises the coaxial double-rotary cutter set.
In the scheme, the device also comprises a driving shaft, a turning reduction box, a left machine cover and a right machine cover; the driving shaft is connected with the turning reduction box through a flat key; and the right machine cover and the left machine cover are internally provided with a gear transmission mechanism respectively, two ends of the driving shaft and the main cutter shaft are connected with the gear transmission mechanism respectively, and the gear transmission mechanism transmits the power of the driving shaft to the main cutter shaft.
Further, the gear transmission mechanism comprises a first gearwheel, a second gearwheel, a first pinion and a second pinion;
the two ends of the driving shaft are respectively provided with a first large gear, the two ends of the main cutter shaft are respectively provided with a second large gear, the first large gear is meshed with a first small gear, the first small gear is meshed with a second small gear, and the second small gear is meshed with a second large gear.
In the scheme, the device further comprises a left baffle and a right baffle; the left baffle is arranged on the inner side of the left machine cover, and the right baffle is arranged on the inner side of the right machine cover; two ends of the driving shaft are respectively connected with the left baffle and the right baffle through angular contact bearings; two ends of the main cutter shaft are respectively connected with the left baffle and the right baffle through angular contact bearings.
Further, the device also comprises a main frame, a portal frame and a suspension plate; the left baffle and the right baffle are respectively arranged on two sides of the main frame; the gantry is mounted on a front beam of the main frame, hanging plates are respectively arranged on the left side and the right side of the lower portion of the gantry, the hanging plates on the left side and the right side and the gantry form three-point suspension, the hanging plates on the left side and the right side are obliquely mounted with the front beam of the main frame, and the anti-winding device is connected with the main frame.
Furthermore, the tail baffle is connected with the back beam of the main frame.
In the scheme, the spline shaft in the turning reduction box is connected with the power source through the universal joint.
Compared with the prior art, the invention has the beneficial effects that:
the invention reduces the restriction of soil, thereby reducing power consumption, offsetting forward thrust as much as possible, reducing the phenomenon of side slipping of the tractor, reducing the farming resistance, increasing the farming depth, reducing the farming time, improving the effect of stubble cleaning, reducing mud accumulation, cutting the soil by the forward rotation of the short cutter firstly and the small farming depth and cutting the soil for the large farming depth after the reverse rotation of the long cutter, reducing the power consumption of soil cutting, cutting the soil by the reverse rotation of the long cutter, reducing the parasitic power and protecting the transmission system of the power source tractor.
Drawings
FIG. 1 is an oblique view of a coaxial double rotary cutter set according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anti-wind device according to an embodiment of the present invention;
FIG. 3 is a front view of a rotary cultivator according to an embodiment of the present invention;
FIG. 4 is an oblique view of a rotary cultivator according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a main body of a rotary tiller according to an embodiment of the present invention;
FIG. 6 is a schematic view of the rotary cultivator being connected to a power source according to an embodiment of the present invention;
FIG. 7 is a schematic transmission diagram according to an embodiment of the present invention.
The reference numbers are as follows:
in the figure, 1-universal joint, 2-turning reduction box, 3-suspension plate, 4-main frame, 5-right machine cover, 6-portal frame, 7-tractor support, 8-connecting flat iron, 9-driving shaft, 10-forward rotary tillage cutter sleeve shaft, 11-main cutter shaft, 12-big bevel gear, 13-forward rotary tillage cutter, 14-left machine cover, 15-small bevel gear, 16-fixed shaft, 17-tail baffle, 18-first big gear, 19-second big gear, 20-left baffle, 21-right baffle, 22-angular contact bearing, 23-flat key, 24-conical roller bearing, 25-reverse rotary tillage cutter sleeve shaft, 26-anti-winding device, 27-reverse rotary tillage cutter, 28-spiral single-tooth gear mechanism, 29-cutter shaft mowing, 30-mowing blade.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "front", "rear", "left", "right", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
Fig. 1 shows a preferred embodiment of the coaxial double-rotary cutter set of the present invention, which comprises a forward rotary cutter sleeve shaft 10, a main cutter shaft 11, a large bevel gear 12, a forward rotary cutter 13, a small bevel gear 15, a reverse rotary cutter sleeve shaft 25, an anti-winding device 26 and a reverse rotary cutter 27.
The main cutter shaft 11 is alternately provided with a forward rotary tillage cutter sleeve shaft 10 and a reverse rotary tillage cutter sleeve shaft 25 along the axial direction, the forward rotary tillage cutter sleeve shaft 10 is arranged on the main cutter shaft 11 through a flat key 23, the reverse rotary tillage cutter sleeve shaft 25 is arranged on the main cutter shaft 11 through a tapered roller bearing 24, the forward rotary tillage cutter 13 is arranged on the forward rotary tillage cutter sleeve shaft 10, the reverse rotary tillage cutter 27 is arranged on the reverse rotary tillage cutter sleeve shaft 25, and the reverse rotary tillage cutter 27 is longer than the forward rotary tillage cutter 13; the forward rotary tillage cutter sleeve shaft 10 and the reverse rotary tillage cutter sleeve shaft 25 are connected through a bevel gear set, the bevel gear set is used for enabling the reverse rotary tillage cutter 27 and the forward rotary tillage cutter 13 to coaxially and reversely rotate, a fixed shaft 16 is arranged on the bevel gear set, and an anti-winding device 26 is connected with the fixed shaft 16.
The bevel gear set comprises a large bevel gear 12 and a small bevel gear 15; the rotary tillage cutter sleeve shaft 10 and the reverse rotary tillage cutter sleeve shaft 25 are respectively provided with a large bevel gear 12, the small bevel gear 15 is respectively meshed with the large bevel gear 12 to realize coaxial double rotation, the fixed shaft 16 is arranged on the small bevel gear 15, the anti-winding device 26 is connected with the fixed shaft 16, and the anti-winding device 26 is used for cutting weeds on the forward rotary tillage cutter sleeve shaft 10 and the reverse rotary tillage cutter sleeve shaft 25 to prevent winding.
The reverse rotary tillage cutter 27 and the forward rotary tillage cutter 13 have the same structure, but the reverse rotary tillage cutter 27 is longer than the forward rotary tillage cutter 13, and the short cutter rotates forwards to cut soil slightly first, so that the power consumption of soil cutting is reduced for large-depth soil cutting after the long cutter rotates backwards, and the parasitic power is reduced for long-cutter reverse soil cutting.
As shown in fig. 2, the anti-tangling device 26 includes a spiral single-tooth gear mechanism 28, a mowing knife shaft 29 and a mowing knife 30, wherein the spiral single-tooth gear mechanism 28 is mounted on the fixed shaft 16, a gear meshed with the spiral single-tooth gear mechanism 28 is provided at one end of the mowing knife shaft 29, the mowing knife 30 is provided at the other end of the mowing knife shaft 29, the small bevel gear 15 rotates to drive the mowing knife shaft 29 and the mowing knife 30 to rotate, and the mowing knife 30 is used for cutting weeds on the forward rotary tillage knife sleeve shaft 10 and the reverse rotary tillage knife sleeve shaft 25.
Example 2
As shown in fig. 3, 4 and 5, a rotary cultivator comprises the coaxial double-rotary cutter set in the embodiment 1, a driving shaft 9, a direction-changing reduction gearbox 2, a left machine cover 14, a right machine cover 5, a left baffle plate 20 and a right baffle plate 21; the driving shaft 9 is connected with the bevel gear set of the turning reduction gearbox 2 through a flat key, and the power of the tractor is transmitted to the driving shaft 9 through the bevel gear set in the turning reduction gearbox 2. Gear transmission mechanisms are respectively arranged in the right machine cover 5 and the left machine cover 14, two ends of the driving shaft 9 and two ends of the main cutter shaft 11 are respectively connected with the gear transmission mechanisms, and the gear transmission mechanisms transmit the power of the driving shaft 9 to the main cutter shaft 11.
The gear transmission mechanism comprises a first gearwheel 18, a second gearwheel 19, a first pinion and a second pinion; the two ends of the driving shaft 9 are respectively provided with a first gearwheel 18, the two ends of the main cutter shaft 11 are respectively provided with a second gearwheel 19, the first gearwheel 18 is engaged with a first pinion, the first pinion is engaged with a second pinion, and the second pinion is engaged with the second gearwheel 19. The gear transmission mechanism improves transmission efficiency, and has small abrasion and low noise.
The rotary cultivator also comprises a left baffle 20 and a right baffle 21; the left baffle 20 is arranged on the inner side of the left cover 14, and the right baffle 21 is arranged on the inner side of the right cover 5; two ends of the driving shaft 9 are respectively connected with the left baffle 20 and the right baffle 21 through angular contact bearings 22, so that the axial fixation of the driving shaft 9 is realized; two ends of the main cutter shaft 11 are respectively connected with the left baffle 20 and the right baffle 21 through angular contact bearings 22, so that the main cutter shaft 11 is axially fixed.
The rotary cultivator also comprises a main frame 4, a portal frame 6 and a suspension plate 3; the left baffle 20 and the right baffle 21 are respectively arranged at two sides of the main frame 4; a portal frame 6 is installed on a front beam of the main frame 4, the left side and the right side of the lower portion of the portal frame 6 are respectively provided with a suspension plate 3, the suspension plates 3 on the left side and the right side and a tractor support 7 on the portal frame 6 form three-point suspension, the tractor support 7 is connected with a connecting flat iron 8, and the connecting flat iron 8 is installed on the turning speed reducer 2. The suspension plates 3 on the left side and the right side are obliquely arranged with the front beam of the main frame 4, so that the rotary cultivator is obliquely arranged, and the soil constraint is reduced, thereby reducing the power consumption and the farming resistance. The fixed shaft 16 of the anti-wind device 26 is connected with the main frame 4.
The rotary cultivator also comprises a tail baffle 17, and the tail baffle 17 is connected with the back beam of the main frame 4.
As shown in figures 6 and 7, the internal spline shaft of the turning reduction gearbox 2 is connected with a power source through a universal joint 1.
The main cutter shaft 9 is connected with a forward rotary tillage cutter sleeve shaft 10 and a reverse rotary tillage cutter sleeve shaft 25, the forward rotary tillage cutter sleeve shaft 10 and the reverse rotary tillage cutter sleeve shaft 25 are connected through a bevel gear set to change steering, coaxial double rotation is achieved, forward rotary tillage cutters 13 are mounted on the forward rotary tillage cutter sleeve shaft 10, reverse rotary tillage cutters 27 are mounted on the reverse rotary tillage cutter sleeve shaft 25, the reverse rotary tillage cutters 27 are larger in size than the forward rotary tillage cutters 13, soil is cut in small tillage depth first through forward rotation of the short cutters, soil cutting power consumption is reduced for large tillage depth after reverse rotation of the long cutters, parasitic power is reduced for large tillage depth soil cutting through reverse rotation of the long cutters, and a tractor transmission system is protected. The large bevel gear 12 is meshed with the small bevel gear 15, the small bevel gear 15 is connected with the fixed shaft 16, the fixed shaft 16 is fixed on the main frame 4, the anti-winding device 26 is installed on the fixed shaft 16, and the forward rotary tillage cutter sleeve shaft 10 and the reverse rotary tillage cutter sleeve shaft 25 are used for intermittently mowing, so that weed winding is effectively reduced, and the working efficiency is improved.
As shown in figure 4, the suspension plates 3 at the left and right sides are obliquely arranged at 20 degrees with the front beam of the main frame 4, so that a rotary cultivator is obliquely arranged when the rotary cultivator is connected with a tractor, thereby reducing the soil restriction, further reducing the power consumption and the farming resistance, the turning speed reducer 2 is connected with the tractor through the universal joint 1, the rotary power of the tractor is transmitted into the turning speed reducer 2 through the universal joint 1 in the starting process of the tractor, the turning speed reducer 2 is connected with the driving shaft 9 through a spline and transmits the rotary power to the driving shaft 9, the left end and the right end of the driving shaft 9 are respectively connected with the left baffle plate 20 and the right baffle plate 21 through the angular contact bearing 22 for transverse fixation, a gear transmission mechanism is arranged between the left baffle plate 20 and the right baffle plate 21 and the left cover 14 and the right cover 15, the gear transmission efficiency is improved, the abrasion is small, the noise is low, the first gearwheel 18 is connected with the driving shaft 9, the second gearwheel 19 is connected with the main cutter shaft 11, the double-side transmission is realized, the transmission is stable, the rotary power is transmitted to the main cutter shaft 11, the main cutter shaft 11 is connected with the forward rotary tillage cutter sleeve 10 through the flat key 23, the main cutter shaft 11 is connected with the tapered roller bearing 24 and the reverse rotary tillage cutter sleeve shaft 25, the forward rotary tillage cutter sleeve shaft 10 is connected with the reverse rotary tillage cutter sleeve shaft 25 through the bevel gear set, the rotation directions of the bevel gear set are opposite, the forward thrust is counteracted as much as possible, the side slip condition of the tractor is reduced, the middle small bevel gear 15 is installed on the main frame 4 through the fixed shaft 16, and the coaxial double-rotation soil crushing and weeding of the rotary tillage cutters are realized.
Preferably, the diameter of the driving shaft 9 is 50-70 mm, the length is 1600-1700 mm, the matching diameter of the main cutter shaft 11 is 50-70 mm, the length is 1600-1700 mm, the flat key 23 connected with the main cutter shaft 11 and the forward rotary tillage cutter sleeve shaft 10 is 16X11mm, the length is 150-180 mm, the inner diameter of the forward rotary tillage cutter sleeve shaft 10 is 50-70 mm, the length is 150-180 mm, the inner diameter of the conical roller bearing 24 connected with the main cutter shaft 11 and the reverse rotary tillage cutter sleeve shaft 25 is 50-70 mm, the outer diameter is 80-125 mm, the inner diameter of the reverse rotary tillage cutter sleeve shaft 25 is 70-120 mm, the conical roller bearing 24 adopts interference fit for transverse fixation, the forward rotary tillage cutter 13 adopts a type II S225, the reverse rotary tillage cutter 27 adopts a type T140, the soil cutting torque is reduced, the anti-winding device 26 is arranged on the fixed shaft 16, the spiral mechanism and the fixed shaft 16 of the spiral single-tooth gear mechanism 28 are connected with the cutter shaft gear of the grass cutter shaft 29 of the grass cutter shaft, the mowing knife shaft 29 is connected with the tail baffle 17 through a bearing.
The rotary cultivator of the invention has the working process that:
the invention combines three-point suspension technology, rotary cultivator oblique technology and coaxial double rotation technology, firstly the rotary cultivator is obliquely connected with a power source tractor in 15-30 degrees through a portal frame 6 and a suspension plate 3, preferably 20 degrees, a turning reduction gearbox 2 is connected with the tractor through a universal joint 1, the inclination angle of the universal joint 1 is not more than 15 degrees when the rotary cultivator works, the rotary power of the tractor is transmitted to the turning reduction gearbox 2 through the universal joint 1 in the starting process of the tractor, the turning reduction gearbox 2 transmits the rotary power to a driving shaft 9 through keys, the left end and the right end of the driving shaft 9 are respectively connected with a left baffle plate 20 and a right baffle plate 21 through angular contact bearings 22 for transverse fixation, a gear transmission mechanism is arranged between the left baffle plate 20 and the right baffle plate 21 and a right cover 5 and a left cover 14, a first gearwheel 18 is connected with the driving shaft 9, the driving shaft 9 rotates to drive a pinion to rotate, the pinion drives a second gearwheel 19 through meshing, the second big gear 19 is connected with the main cutter shaft 11, the rotary power is transmitted to the main cutter shaft 11, both sides are simultaneously transmitted with the main cutter shaft 11, the main cutter shaft 11 is connected with the forward rotary tillage cutter sleeve shaft 10 through a flat key 23, the main cutter shaft 11 is connected with the backward rotary tillage cutter sleeve shaft 25 through a tapered roller bearing 24, the forward rotary tillage cutter sleeve shaft 10 is connected with the backward rotary tillage cutter sleeve shaft 25 through a tapered gear set, the main cutter shaft 11 drives the flat key 23 to be connected with the forward rotary tillage cutter sleeve shaft 10 to rotate, the forward rotary tillage cutter sleeve shaft 10 drives the tapered roller bearing 24 to be connected with the backward rotary tillage cutter sleeve shaft 25 to rotate reversely through the tapered gear set, the middle tapered gear 15 is fixed on the main frame 4 through a fixed shaft 16, the rotary tillage cutter coaxially rotates to break soil and weed, the fixed shaft 16 is connected with the anti-winding device 26, the rotation of the fixed shaft 16 drives the spiral single-tooth gear mechanism 28 in the anti-winding device 26 to rotate, the spiral single-tooth gear mechanism 28 drives the mowing blade 30 to rotate, weeding is carried out on the positive rotary tillage cutter sleeve shaft 10 and the negative rotary tillage cutter sleeve shaft 25, and grass winding is prevented.
The forward rotary tillage cutter 13 and the reverse rotary tillage cutter 27 on the main cutter shaft 11 are rotated forward and backward simultaneously to offset forward thrust, so that the phenomenon of sideslip of the tractor is reduced, two-side driving is realized, and the tractor is obliquely arranged, so that the working efficiency is improved, the tillage area is increased, the parasitic power is reduced, the tillage depth is increased, the service life of the rotary cultivator is prolonged, and mud accumulation is prevented.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A coaxial double rotary cutter set is characterized by comprising a forward rotary tillage cutter sleeve shaft (10), a main cutter shaft (11), a large bevel gear (12), a forward rotary tillage cutter (13), a small bevel gear (15), a reverse rotary tillage cutter sleeve shaft (25), an anti-winding device (26) and a reverse rotary tillage cutter (27);
the main cutter shaft (11) is alternately provided with a forward rotary tillage cutter sleeve shaft (10) and a reverse rotary tillage cutter sleeve shaft (25) along the axial direction, the forward rotary tillage cutter sleeve shaft (10) is arranged on the main cutter shaft (11) through a flat key (23), the reverse rotary tillage cutter sleeve shaft (25) is arranged on the main cutter shaft (11) through a tapered roller bearing (24), the forward rotary tillage cutters (13) are arranged on the forward rotary tillage cutter sleeve shaft (10), the reverse rotary tillage cutters (27) are arranged on the reverse rotary tillage cutter sleeve shaft (25), and the reverse rotary tillage cutters (27) are longer than the forward rotary tillage cutters (13); the forward rotary tillage knife sleeve shaft (10) and the reverse rotary tillage knife sleeve shaft (25) are connected through a bevel gear set, the bevel gear set is used for enabling the reverse rotary tillage knife (27) and the forward rotary tillage knife (13) to be coaxial and reversely rotated, a fixed shaft (16) is arranged on the bevel gear set, and an anti-winding device (26) is connected with the fixed shaft (16).
2. The set of coaxial double rotary cutters of claim 1, wherein the bevel gear set comprises a large bevel gear (12) and a small bevel gear (15); the rotary tillage cutter sleeve shaft (10) and the reverse rotary tillage cutter sleeve shaft (25) are respectively provided with a large bevel gear (12), a small bevel gear (15) is respectively meshed with the large bevel gear (12), a fixed shaft (16) is arranged on the small bevel gear (15), and the anti-winding device (26) is connected with the fixed shaft (16).
3. The coaxial double rotary cutter set according to claim 1, wherein the anti-winding device (26) comprises a spiral single-tooth gear mechanism (28), a mowing knife shaft (29) and a mowing blade (30), the spiral single-tooth gear mechanism (28) is installed on the fixed shaft (16), one end of the mowing knife shaft (29) is provided with a gear meshed with the spiral single-tooth gear mechanism (28), the other end of the mowing knife shaft (29) is provided with the mowing blade (30), and the small bevel gear (15) rotates to drive the mowing knife shaft (29) and the mowing blade (30) to rotate.
4. A rotary cultivator comprising the coaxial double rotary cutter set of any one of claims 1 to 3.
5. The rotary cultivator according to claim 4, further comprising a driving shaft (9), a turning reduction box (2), a left cover (14) and a right cover (5);
the driving shaft (9) is connected with the turning reduction box (2) through a flat key; gear drive mechanisms are respectively installed in the right machine cover (5) and the left machine cover (14), two ends of the driving shaft (9) and the main cutter shaft (11) are respectively connected with the gear drive mechanisms, and the gear drive mechanisms transmit the power of the driving shaft (9) to the main cutter shaft (11).
6. A rotary cultivator according to claim 5, wherein the gear transmission mechanism comprises a first gearwheel (18), a second gearwheel (19), a first pinion and a second pinion;
the two ends of the driving shaft (9) are respectively provided with a first large gear (18), the two ends of the main cutter shaft (11) are respectively provided with a second large gear (19), the first large gear (18) is meshed with a first small gear, the first small gear is meshed with a second small gear, and the second small gear is meshed with the second large gear (19).
7. The rotary cultivator of claim 5, further comprising a left baffle (20) and a right baffle (21); the left baffle (20) is arranged on the inner side of the left cover (14), and the right baffle (21) is arranged on the inner side of the right cover (5); two ends of the driving shaft (9) are respectively connected with the left baffle (20) and the right baffle (21) through angular contact bearings (22); two ends of the main cutter shaft (11) are respectively connected with the left baffle (20) and the right baffle (21) through angular contact bearings (22).
8. The rotary cultivator of claim 7, further comprising a main frame (4), a portal frame (6) and a suspension plate (3);
the left baffle (20) and the right baffle (21) are respectively arranged at two sides of the main frame (4); the gantry is mounted on a front beam of the main frame (4), the left side and the right side of the lower portion of the gantry (6) are respectively provided with a suspension plate (3), the suspension plates (3) on the left side and the right side and the gantry (6) form three-point suspension, the suspension plates (3) on the left side and the right side are obliquely mounted with the front beam of the main frame (4), and the anti-winding device (26) is connected with the main frame (4).
9. A rotary tiller according to claim 8, further comprising a tail gate (17), said tail gate (17) being connected to the back rest of the main frame (4).
10. The coaxial double-rotary cutter set and the inclined rotary cultivator as claimed in claim 7, wherein the internal spline shaft of the turning reduction gearbox (2) is connected with a power source through a universal joint (1).
CN202210275711.4A 2022-03-21 2022-03-21 Coaxial double-rotary cutter set and rotary cultivator Pending CN114710980A (en)

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CN202210275711.4A CN114710980A (en) 2022-03-21 2022-03-21 Coaxial double-rotary cutter set and rotary cultivator

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09121606A (en) * 1995-10-31 1997-05-13 Honda Motor Co Ltd Working machine of coaxial normal and reverse rotation
CN201064088Y (en) * 2007-06-20 2008-05-28 刘吉政 Minitype cultivator
CN201171269Y (en) * 2008-01-28 2008-12-31 山东庆云颐元农机制造有限公司 No-tillage fertilization seeder capable of preventing being wrapped by grass
CN204047034U (en) * 2014-10-22 2014-12-31 王丽 A kind of rotovator
CN206963287U (en) * 2017-07-13 2018-02-06 个旧市建和农业科技开发有限公司 Miniature combined rotary cultivator
US20190133017A1 (en) * 2016-07-28 2019-05-09 Jiangsu University An oblique submerged reverse deep rotary tillage device
CN111615873A (en) * 2020-06-11 2020-09-04 嘉兴花汇红园林有限公司 Rotary cultivator capable of preventing grass from being entangled by heat generated by centrifugal force

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09121606A (en) * 1995-10-31 1997-05-13 Honda Motor Co Ltd Working machine of coaxial normal and reverse rotation
CN201064088Y (en) * 2007-06-20 2008-05-28 刘吉政 Minitype cultivator
CN201171269Y (en) * 2008-01-28 2008-12-31 山东庆云颐元农机制造有限公司 No-tillage fertilization seeder capable of preventing being wrapped by grass
CN204047034U (en) * 2014-10-22 2014-12-31 王丽 A kind of rotovator
US20190133017A1 (en) * 2016-07-28 2019-05-09 Jiangsu University An oblique submerged reverse deep rotary tillage device
CN206963287U (en) * 2017-07-13 2018-02-06 个旧市建和农业科技开发有限公司 Miniature combined rotary cultivator
CN111615873A (en) * 2020-06-11 2020-09-04 嘉兴花汇红园林有限公司 Rotary cultivator capable of preventing grass from being entangled by heat generated by centrifugal force

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