CN106561152A - Forage rape combine harvester - Google Patents

Forage rape combine harvester Download PDF

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Publication number
CN106561152A
CN106561152A CN201610948559.6A CN201610948559A CN106561152A CN 106561152 A CN106561152 A CN 106561152A CN 201610948559 A CN201610948559 A CN 201610948559A CN 106561152 A CN106561152 A CN 106561152A
Authority
CN
China
Prior art keywords
shredding
harvesting
discharging
chopping
brassica napus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610948559.6A
Other languages
Chinese (zh)
Inventor
廖庆喜
廖宜涛
舒彩霞
丁幼春
蒋亚军
秦川
万星宇
李海同
蓝征洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huazhong Agricultural University
Original Assignee
Huazhong Agricultural University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huazhong Agricultural University filed Critical Huazhong Agricultural University
Priority to CN201610948559.6A priority Critical patent/CN106561152A/en
Publication of CN106561152A publication Critical patent/CN106561152A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D43/00Mowers combined with apparatus performing additional operations while mowing
    • A01D43/08Mowers combined with apparatus performing additional operations while mowing with means for cutting up the mown crop, e.g. forage harvesters
    • A01D43/086Mowers combined with apparatus performing additional operations while mowing with means for cutting up the mown crop, e.g. forage harvesters and means for collecting, gathering or loading mown material
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D67/00Undercarriages or frames specially adapted for harvesters or mowers; Mechanisms for adjusting the frame; Platforms

Abstract

The invention discloses a forage rape combine harvester which comprises a harvesting device arranged at the front end of a chassis running device, a feeding conveying device connected with a discharge port in the rear end of the harvesting device, a chopping device hinged to the discharge port of the feeding conveying device, and a material collection and discharging device detachably connected with the discharge port of the chopping device; and the chopping device and the material collection and discharging device are arranged on a chassis of the chassis running device. The forage rape combine harvester which can accomplish cutting, conveying and chopping of forage rape at one time and collect the forage rape is simple and compact in structure and convenient to operate. Through modularized modification on the conventional rape/grain combine harvester, and simply by replacing a threshing cleaning component of the grain combine harvester with the chopping device and the material collection and discharging device, the forage rape combine harvester is formed, the investment cost is low, and a utilization ratio of the conventional rape/grain combine harvester is raised. With the adoption of the crawler type chassis running device, the forage rape combine harvester is applicable to forage rape silage harvesting in different places with morphological characteristics, such as plains, mountains and hills, and intertidal zones.

Description

Grazing Brassica napus combined harvester
Technical field
The invention belongs to harvest technical field in agricultural machinery, and in particular to a kind of grazing Brassica napus combined harvester.
Background technology
At this stage China is in from grain Jing diadactic structures to grain crop-cash crop-forage rotation tour, and feed becomes development and raises The material base of foster industry.It is becoming tight under background in the new normality of economic development, resource environment constraint, how accelerates to change agricultural development side Formula, industry restructuring, guarantee key farm products effective supply, realize Green Development and resource sustainable application must be cracked Realistic problem.
In Middle And Lower Reaches of Changjiang River is the main producing region of China's cole crop, the brassinosteroid biosynthesis matter yield of initial bloom stage to decorative pattern at the end of a poem, article, etc. where there is a small blank space phase High, nutritious and good palatability, is the silage of high-quality.Winter-spring season good farmland, hillside fields, beach be ordinary, scattered, waste life Rape is planted under the conditions of state, for ensilage, to solving animal husbandry winter food shortage, feeding cost are high, grain consumption is big etc. Problem, raises to promotion agricultural production grain Jing and plans as a whole, and realizes hiding grain in ground, Tibetan grain in skill, with important strategic importance.
Promote the fast development of In Middle And Lower Reaches of Changjiang River grazing Brassica napus crop, advance agriculture and animal husbandry breeding depth integration, light letter Efficient mechanization production technology is crucial.So that the silages such as corn harvest as an example, mechanized harvest efficiency is artificial 10~20 times of operation, it is possible to achieve harvest in time, it is ensured that feeding quality, improve production efficiency, and its operating cost is only people 0.75~0.45 times of work industry, can significantly reduce crop cultivation and aquaculture integrated cost.But at present, also not suitable for the receipts of grazing Brassica napus Obtain the silage crop croppers such as machinery, existing corn relatively costly, and be not suitable for the suitable receipts phase water content height of grazing Brassica napus, powder The big biological characteristics of conveying difficulty after broken.
The content of the invention
The purpose of the present invention is the deficiency for above-mentioned technology, there is provided one kind be applied to forage rape biological characteristics, into This low grazing Brassica napus combined harvester, and suitable for middle and lower reach of Yangtze River grazing Brassica napus good farmland, hillside fields, growing plants on beach environment work Industry.
For achieving the above object, the grazing Brassica napus combined harvester designed by the present invention, fills including chassis walking is arranged on Put feeding conveyer and feeding conveyer discharging opening that the harvesting device of front end is connected with harvesting device rear end discharging opening The shredding mechanism being hinged and the device for discharging that gathers materials being detachably connected with shredding mechanism discharging opening, the shredding mechanism is unloaded with gathering materials Material device is installed on the chassis of underpan walking device;
The shredding mechanism includes the shredding mechanism bracing frame being fixed on underpan walking device, is fixed on shredding mechanism The shredding mechanism of support both sides outer truss, two ends are fixed on chopping cutter shaft, the weldering on the outer truss of shredding mechanism by bearing block The knife rest on chopping cutter shaft and the moving knife being fixed on knife rest are closed, and installed in chopping cutter shaft one end and outside bearing block The belt wheel of side.
Further, the shredding mechanism also includes lower encioser and upper cover of the seam on the outer truss of the shredding mechanism Shell, the lower encioser and the upper encloser pairing are arranged, and one end of the lower encioser is located at the feeding conveyer discharging opening Side and charging aperture is provided with, the top of the upper encloser is discharging opening, and the side of the discharging opening is welded with one end of discharge baffle plate Close, the other end of the discharge baffle plate extends to the charging aperture of the device for discharging that gathers materials;It is described chopping cutter shaft, the knife rest and The moving knife is respectively positioned in the space being made up of the lower encioser and the upper encloser, and two bearing seats are in space Outward.
Further, at least two, the knife rest and edge chopping cutter shaft axial direction arrangement;Each described knife rest is wrapped Axle sleeve and multiple support for fix the moving knife of the seam on the chopping cutter shaft is included, the plurality of support is circumferentially equal It is even to be distributed on the axle sleeve outer peripheral edge.
Further, the cutter sweep includes header frame, is horizontally installed on the reciprocating of header frame porch and cuts Cutter, the passive nearside divider and active divider that are separately positioned on header frame entrance both sides, laterally it is suspended in header frame The helical feed screw feeder at rear and transmission mechanism, and the winder being rotatably supported on header frame rear-side cross member;The transmission Mechanism connects respectively with the transmission of the active divider, the reciprocating cutterbar, the helical feed screw feeder and the winder Connect.
Further, it is described gather materials device for discharging include be fixed on the underpan walking device chassis hopper support, The Material collecting box for harvesting that is connected using articulated manner with hopper support, seam hopper pedestal upper end batch turning plate and one end and hopper support The hopper supporting cylinder of connection, the hopper supporting cylinder other end is hinged with the Material collecting box for harvesting.
Further, the Material collecting box for harvesting is located on the side plate of driver's cabin side and is further opened with material observation window.
Further, the underpan walking device is caterpillar chassis running gear.
Compared with prior art, the present invention has advantages below:The grazing Brassica napus combining function of the present invention is disposable The cutting of grazing Brassica napus is completed, conveying, shredding and collecting the grazing Brassica napus combined harvester for collecting car, simple and compact for structure, operation It is convenient;By by carrying out modular adaptation to existing rape/grain combine-only need to be by grain combine threshing Part replacement is cleaned into shredding mechanism and the device for discharging that gathers materials, input cost is low, improves existing rape/grain combine Utilization rate;The feeding of the differently geomorphic feature such as Plain, mountain and hill, beach can be suitable for using caterpillar chassis running gear Rape ensiling is harvested.
Description of the drawings
Fig. 1 is the schematic front view of grazing Brassica napus combined harvester structure of the present invention;
Fig. 2 is the schematic side view of harvesting device structure in Fig. 1;
Fig. 3 is the schematic front view of Fig. 2;
Fig. 4 is the decomposing schematic representation of shredding mechanism structure in Fig. 1;
Fig. 5 is the structural representation of device for discharging of gathering materials in Fig. 1;
Fig. 6 is the structural representation of underpan walking device in Fig. 1.
In figure:Harvesting device 1, feeding conveyer 2, shredding mechanism 3, the device for discharging 4 that gathers materials, underpan walking device 5, cut Platform frame 6, reciprocating cutterbar 7, winder 8, helical feed screw feeder 9, passive nearside divider 10, active divider 11, driver Structure 12, jacking cylinder 13, shredding mechanism bracing frame 14, shredding mechanism outer truss 15, upper encloser 16 are (wherein:Discharging opening 16.1, on Semi-circular recesses 16.2), lower encioser 17 (wherein:Lower semi-circular groove 17.1), belt wheel 18, chopping cutter shaft 19, tool head unit 20 (wherein:Support 20.1, axle sleeve 20.2), moving knife 21, bearing block 22, charging aperture 23, discharge baffle plate 24, Material collecting box for harvesting 25, material see Examine window 26, batch turning plate 27, hopper supporting cylinder 28, hopper support 29, chassis 30, engine 31, drive disk assembly 32, driving wheel 33rd, driven pulley 34, auxiliary wheel 35, crawler belt 36.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment.
As shown in figure 1, the grazing Brassica napus combined harvester of the present invention, including harvesting device 1, feeding conveyer 2, chopping Device 3, gather materials device for discharging 4 and underpan walking device 5.The front end of underpan walking device 5 is the receipts of grazing Brassica napus combined harvester Device 1 is cut, the rear end discharging opening of harvesting device 1 is bolted with the delivery chute charging aperture bottom of feeding conveyer 2, just In dismounting;Delivery chute front lower is connected by jacking cylinder 13 with the chassis 30 of underpan walking device 5, i.e. jacking cylinder 13 1 End is hinged on delivery chute front lower, and the other end is hinged on chassis 30;The discharging opening of feeding conveyer 2 cuts with scissors with shredding mechanism 3 Connect, the discharging opening of shredding mechanism 3 is detachably connected with the device for discharging 4 that gathers materials, meanwhile, the device for discharging 4 that gathers materials of shredding mechanism 3 leads to Bolt is crossed on the chassis 30 of underpan walking device 5, and shredding mechanism 3 is located at the upper left side of underpan walking device 5, gathers materials Device for discharging 4 be located at upper right side, shredding mechanism 3 and gather materials device for discharging 4 by bolt install can aspect dismantle, more change the outfit paddy Internet of Things is closed harvester threshing and cleans part.
With reference to shown in Fig. 2, Fig. 3, cutter sweep 1 includes header frame 6, is horizontally installed on the past of the porch of header frame 6 Active divider on the right side of compound cutter 7, the passive nearside divider 10 being separately positioned on the left of the entrance of header frame 6 and entrance 11st, the helical feed screw feeder 9 and transmission mechanism 12 at the rear of header frame 6 are laterally suspended in, and are rotatably supported in header frame 6 Winder 8 on rear-side cross member;Transmission mechanism 12 respectively with active divider 11, reciprocating cutterbar 7, helical feed screw feeder 9 And winder 8 is connected.During operation, the active divider 11 of passive nearside divider 10 and right side by the left side of header frame 6 will Do not cut and separate with crop to be cut, under the support of winder 8, header frame is poured in the cut-out of Jing reciprocating cutterbars 7 into crop to be cut 6, grazing Brassica napus stalk is gathered by helical feed screw feeder 9 and is delivered to the rear end discharging opening of header frame 6 and is transferred to feeding conveying Device 2, does not cut crop and is pushed aside in order to avoid winding header frame 6, is gathered in again by next time.
Because the suitable receipts phase stalk height of grazing Brassica napus is in 1.3m or so, the depth of header frame 6 is suitable not less than grazing Brassica napus Receipts phase stalk height.It is that will smoothly not cut rape strong with rape to be cut further, since suitable receipts phase rape upper strata branch mutually winds Row separates, and the right side of header frame 6 is provided with the active divider 11 being connected with transmission mechanism 12.
Feeding conveyer 2 is arranged at the rear portion of harvesting device 1, and the discharging opening of feeding conveyer 2 is hinged with shredding mechanism 3, The one end of jacking cylinder 13 is hinged on delivery chute front lower, and the other end is hinged on the chassis 30 of underpan walking device 5, so as to solid Harvesting device 1 due to the front end of feeding conveyer 2 realizes profiling in the presence of jacking cylinder 13 with fluctuating.
As shown in figure 4, shredding mechanism 3 includes the shredding mechanism bracing frame 14 being fixed on underpan walking device 5, is fixed on (truss is fixed on shredding mechanism support to the outer truss 15 of the shredding mechanism of the both sides of shredding mechanism bracing frame 14 outside i.e. one shredding mechanism The side of frame, the outer truss of another shredding mechanism is fixed on the opposite side of shredding mechanism bracing frame), two ends pass through bearing block 22 Knife rest 20 of the chopping cutter shaft 19, seam being bolted on the outer truss 15 of shredding mechanism on chopping cutter shaft 19 and it is fixed on knife Moving knife 21 on frame 20, and installed in chopping one end of cutter shaft 19 and positioned at the belt wheel 18 in the outside of bearing block 22;In addition, chopping dress Putting 3 also includes lower encioser 17 and upper encloser 16, i.e. upper encloser 16 and lower encioser 17 of the seam on the outer truss 15 of shredding mechanism On the outer truss 15 of shredding mechanism of the side of shredding mechanism bracing frame 14, other end seam is in shredding mechanism bracing frame for one end seam On the outer truss 15 of the shredding mechanism of 14 opposite sides.Lower encioser 17 and the pairing of upper encloser 16 are arranged in the present embodiment, lower encioser 17 One end is located at the discharging opening side of feeding conveyer 2 and is provided with charging aperture 23, and the top of upper encloser 16 is discharging opening 16.1, is discharged The side of mouth 16.1 extends to entering for the device for discharging 4 that gathers materials with one end seam of discharge baffle plate 24, the other end of discharge baffle plate 24 Material mouth;Chopping cutter shaft 19, knife rest 20 and moving knife 21 are respectively positioned in the space being made up of lower encioser 17 and upper encloser 16, meanwhile, under The biside plate upper edge of case 17 is provided with the lower semi-circular groove 17.1 for shelving chopping cutter shaft 19, the biside plate of upper encloser 16 Lower edge is provided with the upper half circular groove 16.2 being involutory with the lower semi-circular groove 17.1 of lower encioser 17, lower semi-circular groove 17.1 and the pairing of upper half circular groove 16.2 after formed for chopping cutter shaft 19 insertion axis hole so that chopping cutter shaft 19, knife rest and Moving knife 21 is respectively positioned in space, and two bearing blocks 22 are located at outside space.
Again as shown in figure 4, the axial direction of cutter shaft 19 is shredded uniformly or nonuniform mutation operator at least two knife rests edge;Each knife Frame 20 includes axle sleeve 20.2 and multiple support for fix moving knife 21 of the seam on chopping cutter shaft 19, and multiple supports are circumferentially It is evenly distributed on the outer peripheral edge of axle sleeve 20.2.Two knife rests 20, and two knife rests 20 are adopted in the present embodiment along chopping cutter shaft 19 Radial line be arranged symmetrically, each knife rest 20 include four supports 20.1 and in cruciform symmetry arrangement, one consolidates one end of moving knife 21 It is scheduled on the support 20.1 of a knife rest 20, the other end is fixed on the support 20.1 of another knife rest 20, i.e., in the present embodiment Also arrange in cruciform symmetry including four moving knife 21.
During operation, by engine output shaft by V belt translation, drive is fixed on chopping cutter shaft 19 1 to the power of shredding mechanism 3 The belt wheel 18 at end realizes that shredding mechanism 3 rotates at a high speed, and grazing Brassica napus stalk is delivered to shredding mechanism 3 by feeding conveyer 2 Charging aperture 23, after into shredding mechanism 3, at a high speed the moving knife 21 of rotation cuts grazing Brassica napus straw chopping to grazing Brassica napus stalk Grazing Brassica napus Jing discharges baffle plate 24 after broken is delivered to and gathers materials in device for discharging 4.
As shown in figure 5, the device for discharging 4 that gathers materials include the hopper support 29 that is fixed on the chassis 30 of underpan walking device 5 and Hopper support 29 adopts the Material collecting box for harvesting 25, seam of articulated manner connection in the batch turning plate 27 and one end and material of the upper end of hopper support 29 The connected hopper supporting cylinder 28 of box bracket 29, and the other end of hopper supporting cylinder 28 is hinged with Material collecting box for harvesting 25, in addition, Material collecting box for harvesting 25 is located on the side plate of driver's cabin side and offers material observation window 26.
During operation, the grazing Brassica napus stalk conveyed after chopping by shredding mechanism 3 is discharged to Material collecting box for harvesting 25, gathers materials in the present embodiment The longitudinal cross-section of case 25 is inverted trapezoidal, and its size is 1.8m × 2m × 2m, and the grazing Brassica napus stalk volume that can once collect chopping is 5.76m3.After material observation window 26 of the driver from Material collecting box for harvesting observes that Material collecting box for harvesting 25 is filled, cropper other parts stop Operation, transhipment materials vehicle rests against cropper right side discharge zone, it is ensured that materials vehicle compartment side is drawn close with batch turning plate 27, starts material Case supporting cylinder 28, pin joint of the Material collecting box for harvesting 25 on hopper support 29 is rotated, and the material in Material collecting box for harvesting 25 is constantly transferred to On transhipment materials vehicle, as shown in fig. 6, the as discharging state of Material collecting box for harvesting 25.After the material of Material collecting box for harvesting 25 has been unloaded, hopper supports liquid The work of cylinder pressure 28 makes Material collecting box for harvesting 25 restore to cropper job state, then starts cropper other parts, continues harvest operation.
As shown in fig. 6, underpan walking device is caterpillar chassis running gear, including chassis 30, engine 31, driving section Part 32, the driving wheel 33 installed in the both sides of chassis 30, the driven pulley 34, auxiliary wheel being distributed between two driving wheels 33 of homonymy 35th, crawler belt 36, underpan walking device 5 adopts crawler travel mode, has good by property in mountain area knob, is especially receiving When obtaining the fully loaded material of machine can preferably adaptation to the ground, prevent from being uneven and causing to overturn.

Claims (7)

1. a kind of grazing Brassica napus combined harvester, it is characterised in that:Fill including the harvesting for being arranged on underpan walking device (5) front end Put feeding conveyer (2) and feeding conveyer (2) discharging opening hinge that (1) is connected with harvesting device (1) rear end discharging opening The shredding mechanism (3) for connecing and the device for discharging that gathers materials (4) being detachably connected with shredding mechanism (3) discharging opening, the shredding mechanism (3) it is installed on the chassis of underpan walking device (5) (30) with the device for discharging that gathers materials (4);
The shredding mechanism (3) including the shredding mechanism bracing frame (14) being fixed on underpan walking device (5), be fixed on chopping The shredding mechanism of device support stand (14) both sides outer truss (15), two ends are fixed on the outer purlin of shredding mechanism by bearing block (22) Knife rest (20) of the chopping cutter shaft (19), seam on frame (15) in chopping cutter shaft (19) and the moving knife being fixed on knife rest (20) (21), and installed in chopping cutter shaft (19) one end and belt wheel (18) on the outside of bearing block (22).
2. grazing Brassica napus combined harvester according to claim 1, it is characterised in that:The shredding mechanism (3) also includes weldering Close lower encioser (17) and upper encloser (16), the lower encioser (17) and the upper cover on the outer truss (15) of the shredding mechanism Shell (16) pairing is arranged, one end of the lower encioser (17) be located at the feeding conveyer (2) discharging opening side and be provided with into Material mouth (23), the top of the upper encloser (16) is discharging opening (16.1), the side of the discharging opening (16.1) and discharge baffle plate (24) one end seam, the other end of the discharge baffle plate (24) extends to the charging aperture of device for discharging (4) that gather materials;It is described Chopping cutter shaft (19), the knife rest and the moving knife (21) are respectively positioned on and are made up of the lower encioser (17) and the upper encloser (16) Space in, and two bearing blocks (22) are outside space.
3. grazing Brassica napus combined harvester according to claim 1 or claim 2, it is characterised in that:The knife rest (20) at least two Individual and edge chopping cutter shaft (19) axial direction arrangement;Each described knife rest (20) includes seam on chopping cutter shaft (19) Axle sleeve (20.2) and multiple supports (20.1) for fixing the moving knife (21), the plurality of support (20.1) is circumferentially equal It is even to be distributed on the axle sleeve (20.2) outer peripheral edge.
4. grazing Brassica napus combined harvester according to claim 1 or claim 2, it is characterised in that:The cutter sweep (1) is including cutting Platform frame (6), the reciprocating cutterbar (7) for being horizontally installed on header frame (6) porch, it is separately positioned on header frame (6) The passive nearside divider (10) and active divider (11) of entrance both sides, the spiral transferring for being laterally suspended in header frame (6) rear Send screw feeder (9) and transmission mechanism (12), and the winder (8) being rotatably supported on header frame (6) rear-side cross member;The transmission Mechanism (12) respectively with the active divider (11), the reciprocating cutterbar (7), the helical feed screw feeder (9) and institute State winder (8) to be connected.
5. grazing Brassica napus combined harvester according to claim 1 or claim 2, it is characterised in that:The device for discharging that gathers materials (4) bag The hopper support (29) and hopper support (29) that are fixed on the underpan walking device (5) chassis (30) are included using the side of being hinged Formula connection Material collecting box for harvesting (25), seam hopper support (29) upper end batch turning plate (27) and one end be connected with hopper support (29) Hopper supporting cylinder (28), hopper supporting cylinder (28) other end is hinged with the Material collecting box for harvesting (25).
6. grazing Brassica napus combined harvester according to claim 5, it is characterised in that:The Material collecting box for harvesting (25) is positioned at driver's cabin Material observation window (26) is further opened with the side plate of side.
7. grazing Brassica napus combined harvester according to claim 1 or claim 2, it is characterised in that:The underpan walking device (5) is Caterpillar chassis running gear.
CN201610948559.6A 2016-11-02 2016-11-02 Forage rape combine harvester Pending CN106561152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610948559.6A CN106561152A (en) 2016-11-02 2016-11-02 Forage rape combine harvester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610948559.6A CN106561152A (en) 2016-11-02 2016-11-02 Forage rape combine harvester

Publications (1)

Publication Number Publication Date
CN106561152A true CN106561152A (en) 2017-04-19

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Application Number Title Priority Date Filing Date
CN201610948559.6A Pending CN106561152A (en) 2016-11-02 2016-11-02 Forage rape combine harvester

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108575272A (en) * 2018-04-27 2018-09-28 王学彦 A kind of new energy crops harvester
CN108738655A (en) * 2018-04-10 2018-11-06 昆明理工大学 A kind of reciprocating cutting formula rose beta pruning chopper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108738655A (en) * 2018-04-10 2018-11-06 昆明理工大学 A kind of reciprocating cutting formula rose beta pruning chopper
CN108738655B (en) * 2018-04-10 2021-05-14 昆明理工大学 Reciprocating cutting type rose pruning and field returning machine
CN108575272A (en) * 2018-04-27 2018-09-28 王学彦 A kind of new energy crops harvester

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