CN210352049U

CN210352049U - Double-shaft double-layer cutting rotary cultivator

Info

Publication number: CN210352049U
Application number: CN201920960819.0U
Authority: CN
Inventors: 王俊国
Original assignee: Huaian Rong Yu Machinery Co ltd
Current assignee: Huaian Rong Yu Machinery Co ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-21
Anticipated expiration: 2029-06-25

Abstract

The utility model relates to a double-shaft double-layer cutting rotary cultivator, which comprises a V-shaped cover plate, a first side plate, a second side plate, a bottom plate, a supporting seat, a handrail component, a U-shaped plate, a diesel engine, a lapping sheet, a protective plate, a first belt wheel, a second belt wheel, a main shaft, a tensioning component, a belt, a transmission component, a rotary cultivation component and a rear wheel component; the utility model adopts two detachable and symmetrical rotary tillage shafts, one rotary tillage shaft can be selected to work alone or two rotary tillage shafts can work together according to the width of the ridge, and the rotary tillage machine is convenient to disassemble and assemble and convenient to maintain; in addition, still possess double-deck cutting function for earth is broken more thoroughly, has improved the rotary tillage effect.

Description

Double-shaft double-layer cutting rotary cultivator

Technical Field

The utility model relates to a double-deck cutting rotary cultivator of biax.

Background

The rotary cultivator is a common agricultural tillage machine, the existing rotary cultivator mostly only has one rotary tillage shaft, the width of a rotary tillage area is fixed, the whole rotary tillage shaft rotates regardless of the width of a ridge, and the rotary cultivator is inconvenient to disassemble and assemble during maintenance; in addition, the rotary tillage blade only has a single layer, and only can remove soil at a single part, so that the soil is broken thoroughly, the rotary tillage effect is not good enough, and the rotary tillage blade is to be further improved.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that an adoption can be dismantled and two rotary tillage axles of symmetry are provided in order to make things convenient for dismouting maintenance to possess the double-deck cutting rotary cultivator of double-deck cutting function in order to improve rotary tillage effect's biax.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a double-shaft double-layer cutting rotary cultivator comprises a V-shaped cover plate, a first side plate, a second side plate, a bottom plate, a supporting seat, a handrail component, a U-shaped plate, a diesel engine, a piece, a protective plate, a first belt wheel, a second belt wheel, a main shaft, a tensioning component, a belt, a transmission component, a rotary tillage component and a rear wheel component, and is characterized in that the rear side of the lower plane of the bottom plate is fixed with two first side plates which are symmetrically distributed, the inner sides of the lower ends of the two first side plates are fixed with a V-shaped cover plate which is symmetrically distributed mutually, the outer side above the middle part of the two V-shaped cover plates is fixed with a second side plate which is symmetrically distributed mutually, the upper ends of the two second side plates are fixed on the front side of the lower plane of the bottom plate, the rear side of the upper plane of the bottom plate is fixed with the supporting seat, the handrail, the diesel engine is fixed on the front side of the upper plane of the bottom plate, the outer sides of the two second side plates are respectively provided with a protective plate which is symmetrically distributed with each other through two lapping sheets, the first belt pulley is sleeved and fixed on an output shaft of the diesel engine and arranged on the left side of the diesel engine, the transmission assembly is arranged between the two V-shaped cover plates, one end of the main shaft is rotatably inserted and connected to the middle parts of the two V-shaped cover plates and connected with the transmission assembly, and the second belt pulley is sleeved and fixed on the other end of the main shaft and arranged below the first belt pulley; the novel rotary cultivator is characterized in that two belts are sleeved between the first belt wheel and the second belt wheel, the inner sides of the belts are provided with tensioning assemblies, two rotary tillage assemblies are arranged on the outer sides of the front ends of the V-shaped cover plates, the rotary tillage assemblies are connected with the transmission assemblies, the outer sides of the rear ends of the V-shaped cover plates are provided with a rear wheel assembly, and the rear wheel assembly is connected with the transmission assemblies.

Preferably, the transmission assembly comprises a first chain wheel, a second chain wheel, a first rotating shaft, a third chain wheel, a second rotating shaft, a fourth chain wheel, a first bearing, a second bearing, a first chain and a second chain; the first chain wheel and the second chain wheel are sleeved and fixed on the main shaft, first bearings which are symmetrically distributed with each other are embedded at the front ends of the two V-shaped cover plates, second bearings which are symmetrically distributed with each other are embedded at the rear ends of the two V-shaped cover plates, a first rotating shaft is connected between the two first bearings in an inserting manner, a second rotating shaft is connected between the two second bearings in an inserting manner, and the third chain wheel is sleeved and fixed on the first rotating shaft and matched with the second chain wheel; the fourth chain wheel is sleeved and fixed on the second rotating shaft and matched with the first chain wheel, the first chain wheel is sleeved and fixed on the third chain wheel and the second chain wheel, and the second chain wheel is sleeved and fixed on the fourth chain wheel and the first chain wheel.

Preferably, two the inside of V type apron all outwards is formed with the V die cavity that a mutual symmetry set up, the middle part of controlling two V die cavities is located respectively to first sprocket and second sprocket, inside one V die cavity on right side was all located to first chain and third sprocket, inside one V die cavity on left side was all located to second chain and fourth sprocket.

Preferably, two ends of the first rotating shaft are respectively provided with a first external hexagonal shaft, and the two rotary tillage components are respectively detachably arranged on the two first external hexagonal shafts; the both ends of second pivot all are formed with a second hexagonal axle outside, two the rear wheel subassembly is detachable respectively and is established on two second hexagonal axles outside.

Preferably, the rotary tillage component comprises a rotary tillage shaft, a rotary tillage plate, a first rotary tillage blade, a second rotary tillage blade, a bolt, a first pin shaft and a first bolt; first interior hexagonal socket has been seted up to the inside of rotary tillage axle, the pot head in hexagonal socket is epaxial at first outer hexagon, first round pin axle detachable alternates to be connected between rotary tillage axle and first outer hexagonal socket, first bolt detachable alternates to connect the afterbody at first bolt, the epaxial cover of rotary tillage is established and is fixed with a plurality of rotary tillage boards, every the outside of rotary tillage board is all fixed with two first rotary tillage blades that are central symmetric distribution, every the inboard of rotary tillage board also all is fixed with two first rotary tillage blades that are central symmetric distribution, and two arbitrary are adjacent on every rotary tillage board contained angle between the first rotary tillage blade is 90 degrees, every the outside of first rotary tillage blade all is provided with a second rotary tillage blade through a bolt.

Preferably, the inside of second rotary tillage blade outwards is formed with the board of bending, one side of the board of bending is formed with cutting edge portion, the spout has still been seted up on the second rotary tillage blade, the screw thread end of bolt passes the spout and inserts the spiro union in first rotary tillage blade, one side edge of first rotary tillage blade outwards is formed with the baffle, the baffle laminating is outside in one side of second rotary tillage blade, one side of first rotary tillage blade is formed with the cutting portion, same one side is located with cutting edge portion to the cutting portion.

Preferably, the rear wheel assembly comprises a rear wheel shaft, a rear wheel, a second pin shaft and a second bolt; the rear wheel shaft is internally provided with a second inner hexagonal hole, one end of the second inner hexagonal hole is sleeved on the second outer hexagonal shaft, the second pin shaft is detachably and alternately connected between the rear wheel shaft and the second outer hexagonal shaft, the second bolt is detachably and alternately connected at the tail of the second pin shaft, and the rear wheel is sleeved and fixed at the outer end of the rear wheel shaft.

Preferably, the tensioning assembly comprises a tensioning wheel, a supporting shaft, a sleeve, a swinging plate and a jacking screw; one end of the supporting shaft is fixed on a second side plate on the left side, the sleeve is rotatably sleeved on the supporting shaft, a swinging plate is fixed on the outer side of the sleeve, a rotatable tensioning wheel is arranged on the outer side of the swinging plate, the tensioning wheel is attached to the inner sides of the two belts, a jacking screw is inserted and screwed on the sleeve, and the threaded end of the jacking screw is tightly jacked on the outer side of the supporting shaft.

Preferably, the armrest assembly comprises an inner shaft sleeve, a long bolt, a swinging block, an internal thread sleeve, a wrench and an armrest frame, the inner shaft sleeve is transversely embedded at the upper end of the supporting seat, and the outer sides of the two ends of the inner shaft sleeve are respectively provided with the swinging blocks which are symmetrically distributed; the outer sides of the two swinging blocks are respectively provided with an internal thread sleeve and a long bolt; the threaded end of the long bolt penetrates through the inner shaft sleeve and the two swinging blocks and is inserted into the inner threaded sleeve in a threaded manner, and a wrench is fixed at the outer end of the inner threaded sleeve; the handrail frame is fixed at the outer ends of the two swinging blocks.

Compared with the prior art, the utility model has the advantages of: the utility model adopts two detachable and symmetrical rotary tillage shafts, one rotary tillage shaft can be selected to work alone or two rotary tillage shafts can work together according to the width of the ridge, and the rotary tillage machine is convenient to disassemble and assemble and convenient to maintain; in addition, still possess double-deck cutting function for earth is broken more thoroughly, has improved the rotary tillage effect.

Drawings

FIG. 1 is a right front structural view of the present invention;

FIG. 2 is a left rear structural view of the present invention;

FIG. 3 is a block diagram of the drive assembly of the present invention;

fig. 4 is a partial enlarged structural view of the present invention at a.

Detailed Description

As shown in fig. 1 to 4, a double-shaft double-layer cutting rotary cultivator comprises a V-shaped cover plate 1, a first side plate 2, a second side plate 3, a bottom plate 4, a support base 5, a handrail assembly, a U-shaped plate 12, a diesel engine 13, a butt strap 14, a guard plate 15, a first belt wheel 16, a second belt wheel 17, a main shaft 29, a tensioning assembly, a belt 22, a transmission assembly, a rotary tillage assembly and a rear wheel assembly; two first side plates 2 which are symmetrically distributed are fixed on the rear side of the lower plane of a bottom plate 4, V-shaped cover plates 1 which are symmetrically distributed are fixed on the inner sides of the lower ends of the two first side plates 2, second side plates 3 which are symmetrically distributed are fixed on the outer sides of the upper parts of the middle parts of the two V-shaped cover plates 1, the upper ends of the two second side plates 3 are fixed on the front side of the lower plane of the bottom plate 4, a supporting seat 5 is fixed on the rear side of the upper plane of the bottom plate 4, an armrest component is arranged on the upper end of the supporting seat 5, a U-shaped plate 12 is fixed between the rear sides of the two first side plates 2, a diesel engine 13 is fixed on the front side of the upper plane of the bottom plate 4, guard plates 15 which are symmetrically distributed are arranged on the outer sides of the two second side plates 3 through two lugs 14, a first belt pulley 16 is sleeved and fixed on an output shaft of the diesel engine, one end of the main shaft 29 is rotatably inserted in the middle of the two V-shaped cover plates 1 and connected with the transmission assembly, and the second belt wheel 17 is sleeved and fixed at the other end of the main shaft 29 and arranged below the first belt wheel 16; two belts 22 are sleeved between the first belt wheel 16 and the second belt wheel 17, tensioning assemblies are arranged on the inner sides of the two belts 22, rotary tillage assemblies are arranged on the outer sides of the front ends of the two V-shaped cover plates 1 respectively, the two rotary tillage assemblies are connected with the transmission assembly respectively, rear wheel assemblies are arranged on the outer sides of the rear ends of the two V-shaped cover plates 1 respectively, and the two rear wheel assemblies are connected with the transmission assembly respectively; the transmission assembly comprises a first chain wheel 30, a second chain wheel 31, a first rotating shaft 32, a third chain wheel 44, a second rotating shaft 28, a fourth chain wheel 35, a first bearing 45, a second bearing 27, a first chain 33 and a second chain 36; the first chain wheel 30 and the second chain wheel 31 are sleeved and fixed on the main shaft 29, the front ends of the two V-shaped cover plates 1 are respectively embedded with a first bearing 45 which is symmetrically distributed, the rear ends of the two V-shaped cover plates 1 are respectively embedded with a second bearing 27 which is symmetrically distributed, a first rotating shaft 32 is inserted between the two first bearings 45, a second rotating shaft 28 is inserted between the two second bearings 27, and a third chain wheel 44 is sleeved and fixed on the first rotating shaft 32 and is matched with the second chain wheel 31; the fourth chain wheel 35 is fixedly sleeved on the second rotating shaft 28 and is matched with the first chain wheel 30, the first chain 33 is sleeved on the third chain wheel 44 and the second chain wheel 31, the second chain 36 is sleeved on the fourth chain wheel 35 and the first chain wheel 30, V-shaped cavities 101 which are symmetrically arranged with each other are formed outwards in the two V-shaped cover plates 1, the first chain wheel 30 and the second chain wheel 31 are respectively arranged in the middle parts of the left V-shaped cavity 101 and the right V-shaped cavity 101, the first chain 33 and the third chain wheel 44 are respectively arranged in one V-shaped cavity 101 on the right side, and the second chain 36 and the fourth chain wheel 35 are respectively arranged in one V-shaped cavity 101 on the left side; two ends of the first rotating shaft 32 are respectively provided with a first outer hexagonal shaft 321, the two rotary tillage components are respectively detachably arranged on the two first outer hexagonal shafts 321, and each rotary tillage component comprises a rotary tillage shaft 39, a rotary tillage plate 40, a first rotary tillage blade 41, a second rotary tillage blade 42, a bolt 43, a first pin shaft 34 and a first bolt 37; a first inner hexagonal hole 391 is formed inside the rotary tillage shaft 39, one end of the first inner hexagonal hole 391 is sleeved on the first outer hexagonal shaft 321, the first pin shaft 34 is detachably inserted and connected between the rotary tillage shaft 39 and the first outer hexagonal shaft 321, so that the rotary tillage shaft 39 is connected on the first rotary shaft 32, the first pin 37 is detachably inserted and connected at the tail of the first pin 37, the head parts of the first pin 37 and the first pin shaft 34 are respectively arranged outside two sides of the rotary tillage shaft 39, a plurality of rotary tillage plates 40 are sleeved and fixed on the rotary tillage shaft 39, two first rotary tillage blades 41 which are centrosymmetrically distributed are fixed outside each rotary tillage plate 40, two first rotary tillage blades 41 which are centrosymmetrically distributed are fixed inside each rotary tillage plate 40, the included angle between any two adjacent first blades 41 on each rotary tillage plate 40 is 90 degrees, a second rotary tillage blade 42 is arranged outside each first rotary tillage blade 41 through a bolt 43, a bent plate 421 is formed at the inner end of the second rotary tillage blade 42 outwards, a blade part 422 is formed at one side of the bent plate 421, a sliding groove 423 is further formed on the second rotary tillage blade 42, the threaded end of the bolt 43 passes through the sliding groove 423 and is inserted and screwed into the first rotary tillage blade 41, a baffle 412 is formed at one side edge of the first rotary tillage blade 41 outwards, the baffle 412 is attached to the outside of one side of the second rotary tillage blade 42 to prevent the second rotary tillage blade 42 from rotating, a cutting part 411 is formed at one side of the first rotary tillage blade 41, and the cutting part 411 and the blade part 422 are arranged at the same side; a second outer hexagonal shaft 281 is formed at each end of the second rotating shaft 28, two rear wheel assemblies are detachably arranged on the two second outer hexagonal shafts 281 respectively, and each rear wheel assembly comprises a rear wheel shaft 25, a rear wheel 24, a second pin shaft 26 and a second bolt 38; a second inner hexagonal hole 251 is formed in the rear wheel shaft 25, one end of the second inner hexagonal hole 251 is sleeved on the second outer hexagonal shaft 281, the second pin shaft 26 is detachably inserted and connected between the rear wheel shaft 25 and the second outer hexagonal shaft 281, so that the rotary tillage shaft 39 is connected on the rear wheel shaft 25, the second pin 38 is detachably inserted and connected at the tail of the second pin shaft 26, the heads of the second pin shaft 26 and the second pin 38 are respectively arranged on the outer portions of two sides of the rear wheel shaft 25, and the rear wheel 24 is sleeved and fixed at the outer end of the rear wheel shaft 25; the tensioning assembly comprises a tensioning wheel 18, a supporting shaft 19, a sleeve 20, a swinging plate 21 and a jacking screw 23; one end of the supporting shaft 19 is fixed on the second side plate 3 on the left side, the sleeve 20 is rotatably sleeved on the supporting shaft 19, the outer side of the sleeve 20 is fixedly provided with a swinging plate 21, the outer side of the swinging plate 21 is provided with a rotatable tensioning wheel 18, the tensioning wheel 18 is attached to the inner sides of two belts 22, the sleeve 20 is inserted and screwed with a jacking screw 23, and the threaded end of the jacking screw 23 is jacked on the outer side of the supporting shaft 19; the armrest component comprises an inner shaft sleeve 6, a long bolt 7, a swinging block 8, an internal thread sleeve 10, a wrench 11 and an armrest frame 9, wherein the inner shaft sleeve 6 is transversely embedded at the upper end of the supporting seat 5, and the outer sides of the two ends of the inner shaft sleeve 6 are respectively provided with the swinging blocks 8 which are symmetrically distributed; the outer sides of the two swinging blocks 8 are respectively provided with an internal thread sleeve 10 and a long bolt 7; the threaded end of the long bolt 7 penetrates through the inner shaft sleeve 6 and the two swinging blocks 8 and is inserted into the inner threaded sleeve 10 in a threaded manner, and a wrench 11 is fixed at the outer end of the inner threaded sleeve 10; the armrest frame 9 is fixed at the outer ends of the two swing blocks 8; two first wheel grooves 161 are formed on the first belt wheel 16, correspondingly, two second wheel grooves 171 are formed on the second belt wheel 17, and two belts are respectively sleeved on the two first wheel grooves 161 and the two second wheel grooves 171; the front side and the rear side of the guard plate 15 are both outwards provided with an inclined plate 151 which is distributed obliquely upwards, the upper ends of the two inclined plates 151 are both outwards provided with a flat plate 152 which is distributed transversely, one ends of the two tabs 14 are respectively fixed on the two inclined plates 151, and the other ends of the two tabs 14 are both fixed on the outer side of the second side plate 3; the second pulley 17 is provided between the two inclined plates 151 on the one cover 15 on the left side.

When in use: the utility model is placed on a ridge needing rotary tillage, the handrail frame 9 is held by both hands, then the diesel engine 13 is started, and then the two first belt wheels 16 are driven to rotate, so that the two second belt wheels 17 are driven to rotate through the two belts 22, and further the main shaft 29, the first chain wheel 30 and the second chain wheel 31 are driven to rotate, so that the fourth chain wheel 35 and the third chain wheel 44 are driven to rotate through the first chain 33 and the second chain 36 respectively, and further the first rotating shaft 32 and the second rotating shaft 28 are driven to rotate; the rotation of the second rotating shaft 28 can drive the two rear wheels 24 to rotate through the rear wheel shafts 25 in the two rear wheel assemblies respectively, so as to drive the utility model to move forwards; the rotation of the first rotary shaft 32 drives the rotary tillage shafts 39 of the two rotary tillage assemblies to rotate, and further drives the rotary tillage plates 40 on each rotary tillage shaft 39 to rotate, so as to drive the four first rotary tillage blades 41 on each rotary tillage plate 40 to rotate, and further utilizes the cutting parts 411 on the first rotary tillage blades 41 to carry out first-layer rotary tillage on soil, and in addition, each first rotary tillage blade 41 also drives each second rotary tillage blade 42 to rotate while rotating, and further utilizes the blade parts 422 on the second rotary tillage blades 42 to carry out second-layer rotary tillage on soil; if the position of the second rotary blade 42 needs to be adjusted, the bolt 43 is firstly unscrewed, then the position of the second rotary blade 42 is adjusted in a sliding mode along the sliding groove 423, and the bolt 43 is screwed after the adjustment is completed; if the manual guiding is not used, the utility model can be connected to the traction mechanism by means of the U-shaped plate 12; if the inclination angle of the handrail frame 9 needs to be adjusted, the wrench 11 can be held to loosen the internal thread sleeve 10, then the handrail frame 9 is swung up and down to enable the two swing blocks 8 to rotate to a proper angle, and after the adjustment is completed, the wrench 11 is held again and the internal thread sleeve 10 is screwed.

The rotary cultivator is a common agricultural tillage machine, the existing rotary cultivator mostly only has one rotary tillage shaft, the width of a rotary tillage area is fixed, the whole rotary tillage shaft rotates regardless of the width of a ridge, and the rotary cultivator is inconvenient to disassemble and assemble during maintenance; in addition, the rotary tillage blades are only single-layer, only the soil at a single part can be removed, the soil is thoroughly crushed, and the rotary tillage effect is not good enough; the utility model adopts two detachable and symmetrical rotary tillage shafts, one rotary tillage shaft can be selected to work alone or two rotary tillage shafts can work together according to the width of the ridge, and the rotary tillage machine is convenient to disassemble and assemble and convenient to maintain; in addition, still possess double-deck cutting function for earth is broken more thoroughly, has improved the rotary tillage effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A double-shaft double-layer cutting rotary cultivator comprises a V-shaped cover plate, a first side plate, a second side plate, a bottom plate, a supporting seat, a handrail component, a U-shaped plate, a diesel engine, a piece, a protective plate, a first belt wheel, a second belt wheel, a main shaft, a tensioning component, a belt, a transmission component, a rotary tillage component and a rear wheel component, and is characterized in that the rear side of the lower plane of the bottom plate is fixed with two first side plates which are symmetrically distributed, the inner sides of the lower ends of the two first side plates are fixed with a V-shaped cover plate which is symmetrically distributed mutually, the outer side above the middle part of the two V-shaped cover plates is fixed with a second side plate which is symmetrically distributed mutually, the upper ends of the two second side plates are fixed on the front side of the lower plane of the bottom plate, the rear side of the upper plane of the bottom plate is fixed with the supporting seat, the handrail, the diesel engine is fixed on the front side of the upper plane of the bottom plate, the outer sides of the two second side plates are respectively provided with a protective plate which is symmetrically distributed with each other through two lapping sheets, the first belt pulley is sleeved and fixed on an output shaft of the diesel engine and arranged on the left side of the diesel engine, the transmission assembly is arranged between the two V-shaped cover plates, one end of the main shaft is rotatably inserted and connected to the middle parts of the two V-shaped cover plates and connected with the transmission assembly, and the second belt pulley is sleeved and fixed on the other end of the main shaft and arranged below the first belt pulley; the novel rotary cultivator is characterized in that two belts are sleeved between the first belt wheel and the second belt wheel, the inner sides of the belts are provided with tensioning assemblies, two rotary tillage assemblies are arranged on the outer sides of the front ends of the V-shaped cover plates, the rotary tillage assemblies are connected with the transmission assemblies, the outer sides of the rear ends of the V-shaped cover plates are provided with a rear wheel assembly, and the rear wheel assembly is connected with the transmission assemblies.

2. The double-shaft double-layer cutting rotary cultivator of claim 1, wherein the transmission assembly comprises a first chain wheel, a second chain wheel, a first rotating shaft, a third chain wheel, a second rotating shaft, a fourth chain wheel, a first bearing, a second bearing, a first chain and a second chain; the first chain wheel and the second chain wheel are sleeved and fixed on the main shaft, first bearings which are symmetrically distributed with each other are embedded at the front ends of the two V-shaped cover plates, second bearings which are symmetrically distributed with each other are embedded at the rear ends of the two V-shaped cover plates, a first rotating shaft is connected between the two first bearings in an inserting manner, a second rotating shaft is connected between the two second bearings in an inserting manner, and the third chain wheel is sleeved and fixed on the first rotating shaft and matched with the second chain wheel; the fourth chain wheel is sleeved and fixed on the second rotating shaft and matched with the first chain wheel, the first chain wheel is sleeved and fixed on the third chain wheel and the second chain wheel, and the second chain wheel is sleeved and fixed on the fourth chain wheel and the first chain wheel.

3. The double-shaft double-layer cutting rotary cultivator according to claim 2, wherein the two V-shaped cover plates are respectively provided with a V-shaped cavity which is symmetrical to each other, the first chain wheel and the second chain wheel are respectively arranged in the middle of the left V-shaped cavity and the right V-shaped cavity, the first chain wheel and the third chain wheel are respectively arranged in the right V-shaped cavity, and the second chain wheel and the fourth chain wheel are respectively arranged in the left V-shaped cavity.

4. The double-shaft double-layer cutting rotary cultivator of claim 2, wherein a first hexagonal shaft is formed at each end of the first rotating shaft, and the two rotary cultivating assemblies are detachably arranged on the two first hexagonal shafts respectively; the both ends of second pivot all are formed with a second hexagonal axle outside, two the rear wheel subassembly is detachable respectively and is established on two second hexagonal axles outside.

5. The double-shaft double-layer cutting rotary cultivator of claim 4, wherein the rotary cultivating assembly comprises a rotary cultivating shaft, a rotary cultivating plate, a first rotary cultivating blade, a second rotary cultivating blade, a bolt, a first pin and a first bolt; first interior hexagonal socket has been seted up to the inside of rotary tillage axle, the pot head in hexagonal socket is epaxial at first outer hexagon, first round pin axle detachable alternates to be connected between rotary tillage axle and first outer hexagonal socket, first bolt detachable alternates to connect the afterbody at first bolt, the epaxial cover of rotary tillage is established and is fixed with a plurality of rotary tillage boards, every the outside of rotary tillage board is all fixed with two first rotary tillage blades that are central symmetric distribution, every the inboard of rotary tillage board also all is fixed with two first rotary tillage blades that are central symmetric distribution, and two arbitrary are adjacent on every rotary tillage board contained angle between the first rotary tillage blade is 90 degrees, every the outside of first rotary tillage blade all is provided with a second rotary tillage blade through a bolt.

6. The double-shaft double-layer cutting rotary cultivator according to claim 5, wherein a bent plate is formed at the inner end of the second rotary blade outwards, a blade portion is formed at one side of the bent plate, a sliding groove is formed in the second rotary blade, a threaded end of the bolt penetrates through the sliding groove and is inserted into the first rotary blade in a screwed mode, a baffle is formed at the edge of one side of the first rotary blade outwards, the baffle is attached to the outer portion of one side of the second rotary blade, a cutting portion is formed at one side of the first rotary blade, and the cutting portion and the blade portion are arranged on the same side.

7. The double-shaft double-layer cutting rotary cultivator of claim 4, wherein the rear wheel assembly comprises a rear wheel shaft, a rear wheel, a second pin shaft and a second bolt; the rear wheel shaft is internally provided with a second inner hexagonal hole, one end of the second inner hexagonal hole is sleeved on the second outer hexagonal shaft, the second pin shaft is detachably and alternately connected between the rear wheel shaft and the second outer hexagonal shaft, the second bolt is detachably and alternately connected at the tail of the second pin shaft, and the rear wheel is sleeved and fixed at the outer end of the rear wheel shaft.

8. The double-shaft double-layer cutting rotary cultivator of claim 2, wherein the tensioning assembly comprises a tensioning wheel, a supporting shaft, a sleeve, a swinging plate and a jacking screw; one end of the supporting shaft is fixed on a second side plate on the left side, the sleeve is rotatably sleeved on the supporting shaft, a swinging plate is fixed on the outer side of the sleeve, a rotatable tensioning wheel is arranged on the outer side of the swinging plate, the tensioning wheel is attached to the inner sides of the two belts, a jacking screw is inserted and screwed on the sleeve, and the threaded end of the jacking screw is tightly jacked on the outer side of the supporting shaft.

9. The double-shaft double-layer cutting rotary cultivator according to claim 1, wherein the armrest assembly comprises an inner shaft sleeve, a long bolt, a swinging block, an internal thread sleeve, a wrench and an armrest frame, the inner shaft sleeve is transversely embedded at the upper end of the supporting seat, and the outer sides of the two ends of the inner shaft sleeve are respectively provided with the swinging blocks which are symmetrically distributed with each other; the outer sides of the two swinging blocks are respectively provided with an internal thread sleeve and a long bolt; the threaded end of the long bolt penetrates through the inner shaft sleeve and the two swinging blocks and is inserted into the inner threaded sleeve in a threaded manner, and a wrench is fixed at the outer end of the inner threaded sleeve; the handrail frame is fixed at the outer ends of the two swinging blocks.