CN209693472U - A kind of ear-snapping unit - Google Patents
A kind of ear-snapping unit Download PDFInfo
- Publication number
- CN209693472U CN209693472U CN201920413911.5U CN201920413911U CN209693472U CN 209693472 U CN209693472 U CN 209693472U CN 201920413911 U CN201920413911 U CN 201920413911U CN 209693472 U CN209693472 U CN 209693472U
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- rack
- driving wheel
- ear
- transmission belt
- snapping
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Abstract
The utility model relates to agricultural mechanical field, specifically a kind of ear-snapping unit.The utility model effectively prevents corn ear and is chewed, and reduces the grain loss rate of harvest corn, improves corn picker quality and corn stover recovery utilization rate.A kind of ear-snapping unit, including rack, nearside divider, clamping conveying device, cutter device and snapping bar；Nearside divider, clamping conveying device are located at the front of rack, top；The transmitting device of clamping conveying device includes left driving wheel, left driven wheel, right driving wheel, right driven wheel, left transmission belt, right transmission belt, left hydraulic motor and right hydraulic motor, and clamping device is mounted equidistant and every group of clamping device includes motion bar, fixed link and entrust idler wheel；Cutter device is installed on frame lower, including stationary knife and movable cutter set；Stationary knife horizontal cross is fixed in rack；Movable cutter set includes pentagon cutterhead and trapezoidal blade；Snapping bar includes torsion structure and cambered blade.It is gathered in suitable for corn.
Description
Technical field
The utility model relates to agricultural mechanical field, specifically a kind of ear-snapping unit.
Background technique
Staple food crop of the corn as China possesses extensive cultivated area in the whole nation.With the development of science and technology, machine
Tool, automation level be gradually increased, harvest corn mostly uses mechanized harvest.However, the maize harvesting machine of domestic production
In the presence of design it is unreasonable, manufacture it is coarse, stability is poor, be easy corn ear is caused to chew, ratio is chewed when serious can
It up to 50%, and is sometimes prone to cause the blocking of cropper, influences operating efficiency.Therefore, in order to avoid corn ear is chewed,
The grain loss rate of harvest corn is reduced, improves corn picker quality and corn stover recovery utilization rate, it is necessary to design
A kind of new ear-snapping unit.
Summary of the invention
The utility model is chewed in order to avoid corn ear, reduces the grain loss rate of harvest corn, is improved corn and is plucked
Fringe quality and corn stover recovery utilization rate, provide a kind of ear-snapping unit.
The utility model adopts the following technical scheme that realization:
A kind of ear-snapping unit, including rack, nearside divider, clamping conveying device, cutter device and snapping bar；
The frame that the rack is formed by overlapping by upper left frame beam, upper right crossbeam, left lower transverse beam, lower right frame beam and four columns
Frame, nearside divider are set to the front of rack；
The clamping conveying device is installed on upper rack and is located at the rear of nearside divider；The clamping conveying device includes
Transmitting device and clamping device；The transmitting device includes left driving wheel, left driven wheel, right driving wheel, right driven wheel, left transmission
Belt, right transmission belt, left hydraulic motor and right hydraulic motor；
Left driven wheel, left driving wheel are horizontally installed to the front and rear ends of upper left frame beam, right driven wheel, right driving wheel respectively
It is horizontally installed to the front and rear ends of upper right crossbeam respectively；The number of the clamping device be multiple groups, clamping device be mounted equidistant in
Between upper left frame beam and upper right crossbeam；Every group of clamping device includes that motion bar, fixed link and two entrust idler wheel；The motion bar
For curved bar, left end is between upper left frame beam and upper right crossbeam, and middle part is articulated on upper right crossbeam, and right end is located at upper right
The right of crossbeam, and a spring is connected between its right end and upper right crossbeam, the spring, upper right crossbeam and the common shape of motion bar
At lever construction；The fixed link is installed on upper left frame beam, right end between upper left frame beam and upper right crossbeam, and with activity
Bar dislocation arrangement；Described two right ends entrusted idler wheel and be respectively correspondingly horizontally installed to the left end of motion bar, fixed link；It is described
Left transmission belt is assemblied in left driving wheel, left driven wheel and a left side simultaneously and entrusts on idler wheel, and right transmission belt is assemblied in right drive simultaneously
Driving wheel, right driven wheel and the right side are entrusted on idler wheel, left transmission belt, right transmission belt strap surface connect under the action of entrusting idler wheel
Touching；The output shaft of the left hydraulic motor is connect with left driving wheel, and the output shaft of right hydraulic motor is connect with right driving wheel, and left
The rotation direction of hydraulic motor output shaft is opposite with the rotation direction of right hydraulic motor output shaft；
The cutter device is installed on the rack of clamping conveying device lower front, and is located at the rear of nearside divider；It is described
Cutter device includes a stationary knife and two movable cutter sets；The stationary knife horizontal cross is fixed in rack, and middle part is in sawtooth
The cutting part of shape；Each movable cutter set includes a pentagon cutterhead and five trapezoidal blades；It is opened in the middle part of the pentagon cutterhead
Equipped with a connecting hole, five trapezoidal blades are respectively arranged in one side of pentagon cutterhead, and a rotatable cutting is consequently formed
Movable cutter set；Two movable cutter sets are symmetrically arranged in the left and right ends of stationary knife, defeated with drive motor respectively by connecting hole
Axis connection out；
The snapping bar includes torsion structure and four cambered blades；The torsion structure includes that support shaft and torsion connect
Bar；One end of the support shaft is connect by roller support with rack, and the other end is connect by hold-down support with rack, support shaft
Middle part be arranged with a connecting shaft, the both ends of support shaft are respectively arranged with a torsion ring, and the torsion ring section is square, turn round
One end face of change is equipped with a torsionspring, which is sheathed on support shaft, and each torsionspring has one
A extension；One torsionspring is fixedly connected by extension with roller support, another torsionspring by extension with
Connecting shaft is fixedly connected；The cambered blade is in arc plate shape, and one long side is blade part, and another long side is knife spine；Four
Cambered blade is surrounded on outside connecting shaft in the same direction and is formed a cylinder-shaped knife group, and one end of the cylindrical shape knife group is equipped with
One stop collar；It is hinged with roller support in the middle part of one end of each cambered blade, it is articulated with stop collar in the middle part of the other end, limits
Ring is fixedly connected with hold-down support；The number of the twisted connecting rod is eight, and one end of each twisted connecting rod is articulated with torsion ring
A corner, the knife spine end of the other end and a cambered blade is hinged, twisted connecting rod drive cambered blade can around with stop collar,
The hinge joint of roller support rotates, and making cylinder-shaped knife group torsion is rotating knife group；The snapping bar rotational support in rack,
Number is two, respectively symmetrically and is tilted down in the rack being installed below in the middle part of clamping conveying device, and the two formation
Rotating knife group is oppositely oriented.
Working principle:
When carrying out corn picker work, under the action of nearside divider, plant move backward by left transmission belt and
Right transmission belt is sandwiched and constantly moves backward, and since clamping device is a lever construction, the elastic deformation of spring is adjustable
The spacing between motion bar and fixed link is saved, guarantees that corn stem will not be difficult to separate while clamped with transmission belt；
When the stalk of plant encounters cutter device, under the mutual cooperation of stationary knife and two movable cutter sets, stalk lower end is cut off,
Corn continues to move backward under the action of left transmission belt and right transmission belt；When fruit ear encounters snapping bar, two harvestings
Roller breaks downwards fruit ear, if two snapping bars cannot smoothly break down fruit ear, fruit ear will continue to apply pressure to two snapping bars,
Torsionspring drives torsion ring, twisted connecting rod movement at this time, so that cylinder-shaped knife group deformation is in rotating knife group, and defeated by clamping
The cooperation upper movement backward for sending device, fruit ear is cut down from fringe handle.
It is mounted on tension pulley on the left transmission belt, right transmission belt, guarantees left transmission skin in transmission process
Band, right transmission belt keep tensioning state.
The left driven wheel, right driven wheel are mounted on winder, guarantee that corn can smoothly enter into clamping conveying device.
The center spacing of both the left driving wheel, left driven wheel is 1400mm, in both right driving wheel, right driven wheel
In the heart away from for 1400mm.
Roller support, hold-down support are mounted on deep groove ball bearing, are used for and support axis connection.
The angle of snapping bar and the column of rack is 45 °.
The structure design of the utility model is reasonable, is skillfully constructed, different from traditional corn harvesting mode, in the ingenious of each mechanism
Under cooperation, corn stem is pulled out from top, corn ear is effectively prevented and is chewed, reduce the grain loss of harvest corn
Rate improves corn picker quality and corn stover recovery utilization rate, is suitable for corn and gathers in.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram for clamping conveying device.
Fig. 3 is the structural schematic diagram of cutter device.
Fig. 4 is the structural schematic diagram of snapping bar.
Fig. 5 is the structural schematic diagram of cylinder-shaped knife group.
Fig. 6 is the structural schematic diagram of rotating knife group.
Fig. 7 is the structural schematic diagram of snapping bar cutting corn.
In figure: 1- rack, 2- nearside divider, 3a1- left driving wheel, the left driven wheel of 3a2-, the left transmission belt of 3a3-, 3a4- are left
Hydraulic motor, 3b1- right driving wheel, the right driven wheel of 3b2-, the right transmission belt of 3b3-, the right hydraulic motor of 3b4-, 3c1- motion bar,
3c2- fixed link, 3c3- entrust idler wheel, 3c4- spring, 4- cutter device, 4a- stationary knife, 4b1- pentagon cutterhead, the trapezoidal knife of 4b2-
Piece, 4b3- connecting hole, 5- snapping bar, 5a1- support shaft, 5a2- torsionspring, 5a3- torsion ring, 5a4- twisted connecting rod, 5a5- roller
Sub- support, 5a6- hold-down support, 5a7- connecting shaft, 5a8- stop collar, 5b- cambered blade, 5b1- blade, 5b2- knife spine, 5A- circle
Tubular knife group, 5B- rotating knife group, 6- tensioning wheel, 7- winder.
Specific embodiment
It is described with reference to the accompanying drawings:
A kind of ear-snapping unit, including rack 1, nearside divider 2, clamping conveying device, cutter device 4 and snapping bar 5；
The frame that the rack 1 is formed by overlapping by upper left frame beam, upper right crossbeam, left lower transverse beam, lower right frame beam and four columns
Frame, nearside divider 2 are set to the front of rack 1；
The clamping conveying device is installed on 1 top of rack and is located at the rear of nearside divider 2；The clamping conveying device packet
Include transmitting device and clamping device；The transmitting device include left driving wheel 3a1, left driven wheel 3a2, right driving wheel 3b1, it is right from
Driving wheel 3b2, left transmission belt 3a3, right transmission belt 3b3, left hydraulic motor 3a4 and right hydraulic motor 3b4；
Left driven wheel 3a2, left driving wheel 3a1 are horizontally installed to the front and rear ends of upper left frame beam respectively, right driven wheel 3b2,
Right driving wheel 3b1 is horizontally installed to the front and rear ends of upper right crossbeam respectively；The number of the clamping device is multiple groups, clamping dress
It sets and is mounted equidistant between upper left frame beam and upper right crossbeam；Every group of clamping device includes motion bar 3c1, fixed link 3c2 and two
Entrust idler wheel 3c3；The motion bar 3c1 is curved bar, and between upper left frame beam and upper right crossbeam, middle part is articulated with for left end
On upper right crossbeam, right end is located at the right of upper right crossbeam, and a spring 3c4 is connected between its right end and upper right crossbeam,
Lever construction is collectively formed in spring 3c4, upper right crossbeam and motion bar 3c1；The fixed link 3c2 is installed on upper left frame beam,
Right end misplaces with motion bar 3c1 and arranges between upper left frame beam and upper right crossbeam；It is described two to entrust idler wheel 3c3 difference
Accordingly it is horizontally installed to the left end of motion bar 3c1, the right end of fixed link 3c2；The left transmission belt 3a3 is assemblied in a left side simultaneously
Driving wheel 3a1, left driven wheel 3a2 and a left side are entrusted on idler wheel 3c3, and right transmission belt 3b3 is assemblied in right driving wheel 3b1, the right side simultaneously
Driven wheel 3b2 and the right side are entrusted on idler wheel 3c3, left transmission belt 3a3, right transmission belt 3b3 strap surface entrusting idler wheel 3c3's
The lower contact of effect；The output shaft of the left hydraulic motor 3a4 is connect with left driving wheel 3a1, the output shaft of right hydraulic motor 3b4 with
Right driving wheel 3b1 connection, and the rotation side of the rotation direction of left hydraulic motor 3a4 output shaft and right hydraulic motor 3b4 output shaft
To opposite；
The cutter device 4 is installed on the rack 1 of clamping conveying device lower front, and is located at the rear of nearside divider 2；Institute
Stating cutter device 4 includes a stationary knife 4a and two movable cutter sets；The stationary knife 4a horizontal cross is fixed in rack 1, middle part
For the cutting part being serrated；Each movable cutter set includes a pentagon cutterhead 4b1 and five trapezoidal blade 4b2；Described five
Connecting hole a 4b3, five trapezoidal blade 4b2, which are offered, in the middle part of the shape cutterhead 4b1 of side is respectively arranged in the one of pentagon cutterhead 4b1
The movable cutter set of a rotatable cutting is consequently formed in side；Two movable cutter sets are symmetrically arranged in the left and right ends of stationary knife 4a, are led to
Cross connecting hole 4b3 respectively with the output axis connection of drive motor；
The snapping bar 5 includes torsion structure and four cambered blade 5b；The torsion structure includes support shaft 5a1 and torsion
Turn connecting rod 5a4；One end of the support shaft 5a1 is connect by roller support 5a5 with rack 1, and the other end passes through hold-down support 5a6
It is connect with rack 1, a connecting shaft 5a7 is arranged in the middle part of support shaft 5a1, the both ends of support shaft 5a1 are respectively arranged with a torsion
Change 5a3, the section torsion ring 5a3 is square, and an end face of torsion ring 5a3 is equipped with a torsionspring 5a2, the torsion
Turn spring 5a2 and be sheathed on support shaft 5a1, each torsionspring 5a2 has an extension；One torsionspring 5a2 passes through
Extension is fixedly connected with roller support 5a5, another torsionspring 5a2 is fixedly connected by extension with connecting shaft 5a7；Institute
Cambered blade 5b is stated in arc plate shape, one long side is the portion blade 5b1, and another long side is knife spine 5b2；Four cambered blade 5b
A cylinder-shaped knife group 5A is surrounded on outside connecting shaft 5a7 and formed in the same direction, and one end of cylindrical shape knife group 5A is equipped with
One stop collar 5a8；It is hinged with roller support 5a5 in the middle part of one end of each cambered blade 5b, limit is articulated in the middle part of the other end
Position ring 5a8, stop collar 5a8 are fixedly connected with hold-down support 5a6；The number of the twisted connecting rod 5a4 is eight, and each torsion connects
One end of bar 5a4 is articulated with a corner of torsion ring 5a3, and the end knife spine 5b2 of the other end and a cambered blade 5b is hinged, turns round
Turning connecting rod 5a4 drives cambered blade 5b that can rotate around with the hinge joint of stop collar 5a8, roller support 5a5, makes cylinder-shaped knife group 5A
Torsion is rotating knife group 5B；For 5 rotational support of snapping bar in rack 1, number is two, respectively symmetrically and is tilted down
It is installed in the middle part of clamping conveying device in the rack 1 of lower section, and the rotating knife group 5B that the two is formed is oppositely oriented.
Further, tension pulley 6 is mounted on the left transmission belt 3a3, right transmission belt 3b3.
Further, the left driven wheel 3a2, right driven wheel 3b2 are mounted on winder 7.
Further, the center spacing of both the left driving wheel 3a1, left driven wheel 3a2 are 1400mm, right driving wheel
The center spacing of both 3b1, right driven wheel 3b2 are 1400mm.
Further, roller support 5a5, hold-down support 5a6 are mounted on deep groove ball bearing.
Further, the angle of snapping bar 5 and the column of rack 1 is 45 °.
In specific implementation process, stop collar 5a8 is fixedly connected with hold-down support 5a6 by threaded pin.
Stationary knife 4a, pentagon cutterhead 4b1 and trapezoidal blade 4b2 use 65Mn steel, thickness of knife edge 2mm, pentagon cutterhead
4b1 diameter is 120mm；Cambered blade 5b uses 65Mn steel, with a thickness of 3mm, length 725mm.
Left driving wheel 3a1, left driven wheel 3a2, right driving wheel 3b1 and right driven wheel 3b2 datum diameter be 200mm；It is left
Transmission belt 3a3, right transmission belt 3b3 datum length be 3520mm.
Claims (6)
1. a kind of ear-snapping unit, it is characterised in that: including rack (1), nearside divider (2), clamping conveying device, cutter device
(4) and snapping bar (5)；
The frame that the rack (1) is formed by overlapping by upper left frame beam, upper right crossbeam, left lower transverse beam, lower right frame beam and four columns,
Nearside divider (2) is set to the front of rack (1)；
The clamping conveying device is installed on rack (1) top and is located at the rear of nearside divider (2)；The clamping conveying device packet
Include transmitting device and clamping device；The transmitting device includes left driving wheel (3a1), left driven wheel (3a2), right driving wheel
(3b1), right driven wheel (3b2), left transmission belt (3a3), right transmission belt (3b3), left hydraulic motor (3a4) and right hydraulic horse
Up to (3b4)；
Left driven wheel (3a2), left driving wheel (3a1) are horizontally installed to the front and rear ends of upper left frame beam, right driven wheel respectively
(3b2), right driving wheel (3b1) are horizontally installed to the front and rear ends of upper right crossbeam respectively；The number of the clamping device is more
Group, clamping device are mounted equidistant between upper left frame beam and upper right crossbeam；Every group of clamping device includes motion bar (3c1), fixes
Bar (3c2) and two entrust idler wheel (3c3)；The motion bar (3c1) is curved bar, and left end is located at upper left frame beam and upper right crossbeam
Between, middle part is articulated on upper right crossbeam, and right end is located at the right of upper right crossbeam, and connects between its right end and upper right crossbeam
It is connected to a spring (3c4), lever construction is collectively formed in the spring (3c4), upper right crossbeam and motion bar (3c1)；The fixation
Bar (3c2) is installed on upper left frame beam, and right end misplaces with motion bar (3c1) and arranges between upper left frame beam and upper right crossbeam
Cloth；Described two right sides entrusted idler wheel (3c3) and be respectively correspondingly horizontally installed to the left end of motion bar (3c1), fixed link (3c2)
End；The left transmission belt (3a3) is assemblied in left driving wheel (3a1), left driven wheel (3a2) and a left side simultaneously and entrusts idler wheel (3c3)
On, right transmission belt (3b3) is assemblied in right driving wheel (3b1), right driven wheel (3b2) and the right side simultaneously and entrusts on idler wheel (3c3), left
Transmission belt (3a3), right transmission belt (3b3) strap surface contacted under the action of entrusting idler wheel (3c3)；The hydraulic horse in a left side
Output shaft up to (3a4) is connect with left driving wheel (3a1), and the output shaft and right driving wheel (3b1) of right hydraulic motor (3b4) are even
It connects, and the rotation direction of left hydraulic motor (3a4) output shaft is opposite with the rotation direction of right hydraulic motor (3b4) output shaft；
The cutter device (4) is installed on the rack (1) of clamping conveying device lower front, and is located at the rear of nearside divider (2)；
The cutter device (4) includes a stationary knife (4a) and two movable cutter sets；Stationary knife (4a) horizontal cross is fixed on rack (1)
On, middle part is the cutting part being serrated；Each movable cutter set includes a pentagon cutterhead (4b1) and five trapezoidal blades
(4b2)；A connecting hole (4b3) is offered in the middle part of the pentagon cutterhead (4b1), five trapezoidal blades (4b2) are installed respectively
In one side of pentagon cutterhead (4b1), the movable cutter set of a rotatable cutting is consequently formed；Two movable cutter sets are symmetrically arranged
In the left and right ends of stationary knife (4a), by connecting hole (4b3) respectively with the output axis connection of drive motor；
The snapping bar (5) includes torsion structure and four cambered blades (5b)；The torsion structure include support shaft (5a1) and
Twisted connecting rod (5a4)；One end of the support shaft (5a1) is connect by roller support (5a5) with rack (1), and the other end passes through
Hold-down support (5a6) is connect with rack (1), and a connecting shaft (5a7), support shaft (5a1) are arranged in the middle part of support shaft (5a1)
Both ends be respectively arranged with a torsion ring (5a3), the section torsion ring (5a3) is square, an end face of torsion ring (5a3)
One torsionspring (5a2) is installed, which is sheathed on support shaft (5a1), and each torsionspring (5a2) is equal
With an extension；One torsionspring (5a2) is fixedly connected by extension with roller support (5a5), another torsion
Spring (5a2) is fixedly connected by extension with connecting shaft (5a7)；The cambered blade (5b) is in arc plate shape, one long side
For the portion blade (5b1), another long side is knife spine (5b2)；Four cambered blades (5b) are surrounded on connecting shaft in the same direction
(5a7) outside and forms a cylinder-shaped knife group (5A), and one end of the cylindrical shape knife group (5A) is equipped with a stop collar (5a8)；
It hingedly, in the middle part of the other end is articulated with stop collar (5a8) with roller support (5a5) in the middle part of one end of each cambered blade (5b),
Stop collar (5a8) is fixedly connected with hold-down support (5a6)；The number of the twisted connecting rod (5a4) is eight, each twisted connecting rod
The one end of (5a4) is articulated with a corner of torsion ring (5a3), knife spine (5b2) end of the other end and a cambered blade (5b)
Hingedly, twisted connecting rod (5a4) drives cambered blade (5b) can turn around with the hinge joint of stop collar (5a8), roller support (5a5)
Dynamic, making cylinder-shaped knife group (5A) torsion is rotating knife group (5B)；Snapping bar (5) rotational support is on rack (1), number
It is two, respectively symmetrically and tilts down in the rack (1) being installed below in the middle part of clamping conveying device, and the rotation that the two is formed
Rotor group (5B) is oppositely oriented.
2. a kind of ear-snapping unit according to claim 1, it is characterised in that: the left transmission belt (3a3), right biography
Tension pulley (6) are mounted on defeated belt (3b3).
3. a kind of ear-snapping unit according to claim 1, it is characterised in that: the left driven wheel (3a2), the right side are driven
Wheel (3b2) is mounted on winder (7).
4. a kind of ear-snapping unit according to claim 1, it is characterised in that: the left driving wheel (3a1), Zuo Congdong
The center spacing for taking turns both (3a2) is 1400mm, and the center spacing of both right driving wheel (3b1), right driven wheel (3b2) is
1400mm。
5. a kind of ear-snapping unit according to claim 1, it is characterised in that: roller support (5a5), hold-down support
(5a6) is mounted on deep groove ball bearing.
6. a kind of ear-snapping unit according to claim 1, it is characterised in that: the column of snapping bar (5) and rack (1)
Angle be 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413911.5U CN209693472U (en) | 2019-03-29 | 2019-03-29 | A kind of ear-snapping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413911.5U CN209693472U (en) | 2019-03-29 | 2019-03-29 | A kind of ear-snapping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209693472U true CN209693472U (en) | 2019-11-29 |
Family
ID=68648085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920413911.5U Expired - Fee Related CN209693472U (en) | 2019-03-29 | 2019-03-29 | A kind of ear-snapping unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN209693472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727732A (en) * | 2020-05-21 | 2020-10-02 | 江苏沃得农业机械股份有限公司 | Corn ear picking header structure |
| CN113141860A (en) * | 2021-05-19 | 2021-07-23 | 中国农业大学 | Fresh corn ear picking device based on corn ear diameter |
-
2019
- 2019-03-29 CN CN201920413911.5U patent/CN209693472U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111727732A (en) * | 2020-05-21 | 2020-10-02 | 江苏沃得农业机械股份有限公司 | Corn ear picking header structure |
| CN113141860A (en) * | 2021-05-19 | 2021-07-23 | 中国农业大学 | Fresh corn ear picking device based on corn ear diameter |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |