CN115989727A - Ditching device for soybean and corn planting soil fertilization and use method - Google Patents
Ditching device for soybean and corn planting soil fertilization and use method Download PDFInfo
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- CN115989727A CN115989727A CN202310287807.7A CN202310287807A CN115989727A CN 115989727 A CN115989727 A CN 115989727A CN 202310287807 A CN202310287807 A CN 202310287807A CN 115989727 A CN115989727 A CN 115989727A
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Abstract
The invention discloses a ditching device for fertilization of soybean and corn planting soil and a use method thereof, and relates to the field of ditching devices. The invention comprises a shell, a fertilizing component, a transmission component and a ditching component, wherein a ditching roller, a seed ditch disc and a fertilizer ditch disc are arranged, after ditching of a ditching component, the ditching roller passes through the ditched fertilizer ditch and seed ditches, the fertilizer ditch corresponds to the fertilizer ditch disc, the seed ditch corresponds to the seed ditch disc, when the fertilizer ditch disc and the seed ditch disc pass through the fertilizer ditch and the seed ditch, the soil is extruded to form a regular ditch-shaped outline, the fertilizer ditch disc and the seed ditch disc roll in the ditch, the flatness of a compartment surface in the ditch is ensured, the ditching roller of the seed fertilizer and the shovel ditch component are mutually matched to form a fertilizer ditch with stable depth, the stability and the gap of the fertilizer ditch are increased, the soil blockage is prevented, and the fertilizing efficiency and the convenience of the follow-up field work are improved.
Description
Technical Field
The invention relates to the field of ditching devices, in particular to a ditching device for fertilization of soybean and corn planting soil and a use method thereof.
Background
The fertilizing and ditching device is used as a key component of the corn no-tillage machine, can fertilize in soil at a certain depth and ensures the growth nutrients of crops.
The invention discloses a fertilizing and ditching device suitable for the operation of sticky soil in the publication No. CN113207364A, and solves the problems that the conventional corn no-tillage machine fertilizing and ditching device has bonding blockage, low operation efficiency and weak capability of cutting residual stubble of straw in the operation of sticky soil. The innovation points are as follows: the corner of the turnover frame is hinged to the lower end of the fixing and height adjusting mechanism, the transverse plate of the turnover frame is provided with a stretching shock absorber, the upper end of the stretching shock absorber is hinged to the fixing and height adjusting mechanism, the lower end of the stretching shock absorber is hinged to the front end of the transverse plate of the turnover frame, the vertical plate of the turnover frame is provided with a fixing screw, an included angle is formed between the axis of the fixing screw and the vertical line of the vertical plate of the turnover frame, two curved surface opening disc openers are mounted on the fixing screw, the earth facing surface is attached to form a straight line, and the earth facing angle is 0 degree.
The prior ditching device for fertilizing the soybean and corn planting soil has the following problems in the ditching and fertilizing process:
1. the strip fertilization mode is generally adopted, the fertilizer application amount is large, the fertilizer efficiency utilization rate is low, and excessive application of the fertilizer causes soil hardening and acidification, and causes the problems of environmental pollution and the like;
2. in the process of ditching and fertilizing, the straw is easy to wind the fertilizer outlet and the soil is attached to block the fertilizer outlet, and the ditch is not stable enough, so that the efficiency of fertilizing and the convenience of subsequent work are reduced.
Disclosure of Invention
The invention aims to provide a ditching device for fertilization of soybean and corn planting soil and a use method thereof, which solve the problems.
The invention relates to a ditching device for fertilizing soybean and corn planting soil, which is characterized by comprising a shell, a fertilizing component, a transmission component and a ditching component;
the fertilizing component is connected to one side of the shell through a first connecting component, the ditching component is arranged on the inner side of the shell, and the fertilizing component is connected with the ditching component through a transmission component;
the fertilizer applying component comprises a fertilizer box, a fertilizer charging box and a fertilizer discharging component, wherein the fertilizer charging box is connected to the bottom of the fertilizer box, the fertilizer discharging component is arranged inside the fertilizer charging box, a fertilizer charging chamber is formed inside the fertilizer charging box, and a fertilizer outlet is formed in the bottom of the fertilizer charging box;
the fertilizer discharging assembly comprises a fertilizer discharging shaft, a fertilizer discharging wheel and a connecting wheel, wherein the fertilizer discharging shaft is movably arranged on a fertilizer charging box and penetrates through a fertilizer charging chamber, the fertilizer discharging wheel and the connecting wheel are arranged on the fertilizer discharging shaft, the fertilizer discharging wheel and part of the connecting wheel are positioned in the fertilizer charging chamber, fertilizer charging holes are formed in the fertilizer discharging wheel, the fertilizer charging holes correspond to the positions of fertilizer outlets, the fertilizer charging chamber comprises a fertilizer charging area, a fertilizer cleaning area, a fertilizer protecting area and a fertilizer discharging area, the fertilizer charging area corresponds to the positions of the fertilizer box, the fertilizer cleaning area is positioned above the fertilizer discharging wheel, the fertilizer discharging area is positioned below the fertilizer discharging wheel and above the fertilizer outlets, and the fertilizer protecting area is positioned at the edge position of the fertilizer charging chamber between the fertilizer cleaning area and the fertilizer discharging area;
the ditching part comprises a ditching roller, a seed ditch disc and a fertilizer ditch disc, wherein two ends of the ditching roller are respectively and movably arranged at two sides of the shell through a connecting shaft, a plurality of seed ditch discs and a plurality of fertilizer ditch discs are arranged on the ditching roller, a plurality of fertilizer ditch discs and a plurality of seed ditch discs are arranged at equal intervals, and the number and the positions of the fertilizer applying part and the fertilizer ditch discs correspond to each other;
wherein, through setting up ditching roller, kind ditch disc and fertile ditch disc, after ditching of ditching subassembly, the ditching roller passes through the fertile ditch that has been opened and kind ditch, fertile ditch disc is corresponding to fertile ditch, kind ditch disc is corresponding to kind ditch, fertile ditch disc and kind ditch disc are when fertile ditch and kind ditch pass through fertile ditch, form regular ditch shape profile through extrusion soil, and fertile ditch disc and kind ditch disc roll in the ditch, the roughness of railway carriage or compartment face in the assurance ditch, the ditching roller of planting fertilizer and the fertile ditch of shovel ditch subassembly mutually support formation stable degree of depth, increase the stability and the clearance of fertile ditch, prevent soil jam, improved fertilization efficiency and follow-up field work's convenience.
The transmission part comprises a first connecting rod, a second connecting rod, a first gear, a second gear and a crank, wherein the first connecting rod is connected to the connecting shaft, the first gear is movably arranged on the shell, the second connecting rod is connected to the first gear, the first connecting rod and the second connecting rod are movably matched through the crank, the second gear is connected with the fertilizer discharging shaft through a coupling assembly, the first gear is meshed with the second gear, and the length of the first connecting rod is equal to that of the second connecting rod;
the first gear and the second gear can be replaced, the transmission ratio of the first gear and the second gear can be changed, generally, the diameter of the second gear is larger than that of the first gear, the first gear can rotate for half a circle, and the second gear meshed with the first gear can rotate for half a circle or less than half a circle, at the moment, the fertilizer filling hole can not discharge all fertilizer in the fertilizer filling hole;
wherein, through setting up first connecting rod, the second connecting rod, first gear, second gear and crank, fertilizer ditch disc and kind ditch disc roll in the ditch, drive the ditching roller rotatory, when ditching roller is rotatory, drive the epaxial first connecting rod of connecting rather than being connected and carry out rotary motion, and first connecting rod, second connecting rod and crank form a crank system, when first connecting rod carries out rotary motion, drive the second connecting rod and do half circle reciprocating motion, the second connecting rod drives first gear and rotate, because first gear and second gear meshing, so the second gear can drive the fertilizer shaft and carry out half circle reciprocating motion rotation, when the fertilizer is discharged, the fertilizer wheel is filled after the brush of a certain amount of fertilizer in the fertilizer zone of filling and is cleared up the fertilizer zone, by the fertilizer zone of protecting entering into the fertilizer zone under the protection of fertilizer chamber inner wall and fertilizer hole, the granule fertilizer breaks away from the fertilizer wheel fast under gravity and centrifugal force effect, the fertilizer granule falls into the pipe through the fertilizer mouth, then carry out reset motion through the pipe, the fertilizer zone of returning is realized, the fertilizer is returned to the fertilizer zone of filling and is full diameter, the fertilizer is realized, the diameter is improved, the fertilizer is discharged in the fertilizer is filled in the ditch, and the diameter is realized, the fertilizer is fully to the fertilizer is filled again, the fertilizer is discharged to the fertilizer is full to the fertilizer zone is full of the fertilizer, and is full of the fertilizer.
The fertilizer is applied through the fertilizer filling hole, under the foundation that the ditching roller and the shovel ditch subassembly of seed manure mutually support the fertilizer ditch that forms stable degree of depth, under the condition that the second gear is not changed, the fertilization volume is equal to all fertilizers in the fertilizer filling hole, under the condition that the second gear is changed, the fertilization volume is related with the size of changing the second gear, can realize quantitative fertilization, improves the utilization efficiency of fertilizer, prevents the waste in the fertilization.
Preferably, the ditching device further comprises a ditching component, the ditching component is connected to the shell through a first connecting component, the ditching component comprises a hydraulic telescopic rod, a buffer component and a shovel component, the output end of the hydraulic telescopic rod is connected with the top plate, the buffer component comprises telescopic rods, buffer springs and a bottom plate, the bottom plate is parallel to the top plate, the telescopic rods are divided into two groups, each group comprises four telescopic rods and four buffer springs, the fixed ends of the telescopic rods are connected to the top plate, the movable ends of the telescopic rods are connected to the bottom plate, one buffer spring is sleeved on the telescopic rods, the shovel component comprises a fertilizer ditch shovel and a seed ditch shovel, the fertilizer ditch shovels and the ditch shovels are all arranged at the bottom of the bottom plate in a linear array, the fertilizer ditch shovels correspond to the fertilizer ditch disks in number and positions, and the seed ditch shovels correspond to the disks in number and positions;
wherein, can adjust the height of roof and roof bottom's buffer assembly, shovel subassembly through hydraulic telescoping rod, when the ditching, fertile ditch shovel and kind ditch shovel can adjust the high adaptation more multiple condition, and can carry out buffer protection when the ditching through buffer assembly.
Preferably, the first coupling assembling includes U type pole, dead lever, fixing bolt, retainer plate, connecting bolt, first mounting bracket and second mounting bracket, two the U type pole is installed on the casing, every set up a dead lever between the vertical portion of U type pole, the dead lever passes through fixing bolt to be connected on the U type pole, every the vertical portion of U type pole respectively sets up a retainer plate, every the retainer plate passes through a plurality of connecting bolt to be connected, first mounting bracket and second mounting bracket all set up on the U type pole, and first mounting bracket and second mounting bracket are located the casing both sides, fertilization part is connected to first mounting bracket, the shovel ditch part is connected to the second mounting bracket.
Preferably, the fertilizing component further comprises a fertilizing box, the fertilizing box is connected to the first mounting frame, the fertilizing box is communicated with the fertilizing box, a box cover is arranged at the top of the fertilizing box, and the box cover is connected with the fertilizing box through a hinge;
wherein, the case lid seals the fertilization case, prevents in the in-process of work, and the lime soil enters into the fertilization case.
Preferably, a brush is arranged in the fertilizer cleaning area, the brush is positioned above the fertilizer wheel, a fertilizer outlet component is arranged at the bottom of the fertilizer charging box and comprises a fertilizer guide pipe and an adjusting head, the fertilizer guide pipe corresponds to the fertilizer outlet, and the adjusting head is arranged on the fertilizer guide pipe;
wherein, the brush is at the fertilizer in-process that the fertilizer wheel was arranged, can smooth out the arrangement with filling fertilizer in the fertilizer hole, makes and fills the fertilizer hole and can adorn more fertilizers down, and at the fertilizer in-process that the wheel resets, can clean around filling the fertilizer hole, has improved the cleanliness of fertilizer wheel.
Preferably, the fertilizer box comprises a box body, a buffer box and a straight pipe, wherein one end of the buffer box is connected to the box body, and the other end of the buffer box is connected to the straight pipe.
Preferably, each fertilizer ditch disc is provided with a plurality of bulges which are distributed in a circumferential array at equal intervals;
wherein, bellied setting can increase the roughness of fertile ditch disc, makes fertile ditch disc in the fertile ditch in-process that removes, can be smooth roll, makes fertile ditch disc rotate more stable.
Preferably, a cross beam is arranged on the shell, a plurality of earthing iron chains are arranged on the cross beam, and the earthing iron chains correspond to the fertilizer ditch disks in number and positions;
the earthing iron chain can pull the soil at the ditch edge back into the ditch in the process of moving the device.
The application method of the ditching device for fertilizing the soybean and corn planting soil comprises the following steps:
s1, preparing;
moving the ditching device to the field, putting fertilizer into a fertilizer box, and adjusting a hydraulic telescopic rod to enable a fertilizer ditch shovel and a seed ditch shovel to correspond to the positions of the ridges needing ditching;
s2, ditching;
starting a ditching device to enable the ditching device to move and advance in a field, wherein in the moving and advancing process, a plurality of fertilizer ditches are shoveled out by a plurality of fertilizer ditches in a field ridge, a plurality of ditches are shoveled out by a plurality of ditches in the field ridge, and a seed ditch is arranged between two fertilizer ditches;
s3, pressing a ditch;
after the ditching assembly ditches, the ditching roller passes through the ditched fertilizer ditches and seed ditches, the fertilizer ditches correspond to fertilizer ditch discs, the seed ditches correspond to seed ditch discs, when the fertilizer ditch discs and the seed ditch discs pass through the fertilizer ditches and the seed ditches, regular ditch-shaped outlines are formed by extruding soil, and the fertilizer ditch discs and the seed ditch discs roll in the ditches;
s4, transmission;
when the fertilizer ditch disc and the seed ditch disc roll in ditches, the ditching roller is driven to rotate, the first connecting rod on the connecting shaft connected with the ditching roller is driven to rotate when the ditching roller rotates, the first connecting rod, the second connecting rod and the crank form a crank system, when the first connecting rod rotates, the second connecting rod is driven to do half-circle reciprocating motion, the second connecting rod drives the first gear to rotate, and the first gear is meshed with the second gear, so that the second gear drives the fertilizer discharging shaft to rotate;
s5, fertilizer is discharged;
the fertilizer in the fertilizer box enters the fertilizer box, the fertilizer in the fertilizer box enters a fertilizer filling chamber in the fertilizer filling box, when the fertilizer discharging assembly works, the fertilizer discharging shaft drives the fertilizer discharging wheel to synchronously rotate, the fertilizer discharging wheel enters the fertilizer protecting area after a certain amount of fertilizer is filled in the fertilizer filling area, the fertilizer enters the fertilizer protecting area after being cleaned by a hairbrush of the fertilizer cleaning area, the granular fertilizer enters the fertilizer discharging area under the protection of the inner wall of the fertilizer filling chamber and the fertilizer filling holes, the granular fertilizer is quickly separated from the fertilizer discharging wheel under the action of gravity and centrifugal force, and the agglomerated fertilizer particles enter the fertilizer guiding pipe through the fertilizer outlet and fall into a fertilizer ditch through the fertilizer guiding pipe, so that the quantitative cavitation fertilizer discharging process is completed;
s6, earthing;
after the fertilizer discharge is completed, the earthing iron chain behind the fertilizer discharge assembly fills the soil around the fertilizer ditch into the fertilizer ditch, and the final stage of fertilizer application is completed.
The invention has the following beneficial effects:
1. according to the invention, the ditching roller, the seed ditch disc and the fertilizer ditch disc are arranged, after ditching of the ditching assembly, the ditching roller passes through the ditched fertilizer ditch and the seed ditch, the fertilizer ditch corresponds to the fertilizer ditch disc, the seed ditch corresponds to the seed ditch disc, when the fertilizer ditch disc and the seed ditch disc pass through the fertilizer ditch and the seed ditch, the soil is extruded to form a regular ditch-shaped outline, the fertilizer ditch disc and the seed ditch disc roll in the ditch, the flatness of a compartment surface in the ditch is ensured, the ditching roller of the seed fertilizer and the seed ditch assembly are mutually matched to form a fertilizer ditch with stable depth, the stability and the gap of the fertilizer ditch are increased, the soil blockage is prevented, and the fertilization efficiency and the convenience of subsequent field work are improved.
2. According to the invention, the first connecting rod, the second connecting rod, the first gear, the second gear and the crank are arranged, when the fertilizer ditch disc and the seed ditch disc roll in the ditch, the ditching roller is driven to rotate, when the ditching roller rotates, the first connecting rod on the connecting shaft connected with the ditching roller is driven to rotate, the first connecting rod, the second connecting rod and the crank form a crank system, when the first connecting rod rotates, the second connecting rod is driven to do half-circle reciprocating motion, the second connecting rod drives the first gear to rotate, and because the first gear is meshed with the second gear, the second gear drives the fertilizer discharging shaft to do half-circle reciprocating motion, when fertilizer is discharged, the fertilizer discharging wheel fills a certain amount of fertilizer in the fertilizer discharging area, enters the fertilizer protecting area after the fertilizer is discharged through the brush of the fertilizer discharging area, the fertilizer protecting area enters the fertilizer discharging area under the protection of the inner wall of the fertilizer charging chamber and the fertilizer charging hole, the granular fertilizer is rapidly separated from the fertilizer discharging area under the action of gravity and centrifugal force, the clustered fertilizer particles enter the fertilizer guide pipe through the fertilizer outlet, then fall into the fertilizer guide pipe through the fertilizer discharging pipe, and then the fertilizer discharging wheel is reset to the fertilizer discharging area, and the fertilizer is enabled to reciprocate in the ditch, and the diameter of the fertilizer is enabled to be full, and the fertilizer is discharged again, and the fertilizer is full, and the diameter is improved.
3. Under the basis that the ditching roller and the shovel ditch subassembly of seed manure mutually support and form the fertilizer ditch of stable degree of depth, under the condition that the second gear is not changed, the size of first gear equals the second gear, under the condition that the first gear changes half circle, the second gear also changes half circle, all fertilizers in the hole of filling with fertilizer all can discharge, the fertilization volume equals all fertilizers in the hole of filling with fertilizer, under the condition that the second gear is changed, fertilization volume is related with the size of changing the second gear, at this moment, the fertilizer in the hole of filling with fertilizer can not all discharge, fertilization volume is less than all fertilizers in the hole of filling with fertilizer, and fertilization volume is related with the transmission ratio of first gear and second gear, can realize quantitative fertilization, improve the utilization efficiency of fertilizer, prevent the waste in the fertilization.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a ditching device for fertilizing soybean and corn planting soil;
FIG. 2 is an isometric view of a ditching device for fertilizing soybean and corn planting soil, according to the present invention;
FIG. 3 is a schematic diagram showing the front view of a ditching device for fertilizing soybean and corn planting soil;
FIG. 4 is a schematic diagram showing a front view of a ditching device for fertilizing soybean and corn planting soil, according to the invention;
FIG. 5 is a schematic side view of the structure of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic diagram showing the front view of a fertilizer discharging assembly of a ditching device for fertilizing soybean and corn planting soil;
FIG. 7 is a schematic diagram showing the internal structure of a fertilizer discharging assembly of a ditching device for fertilizing soybean and corn planting soil;
FIG. 8 is a schematic diagram showing the front view of the ditching part of the ditching device for fertilizing soybean and corn planting soil;
FIG. 9 is a schematic perspective view of a fertilizer wheel of a ditching device for fertilizing soybean and corn planting soil;
FIG. 10 is a schematic view of a partially enlarged structure of the invention at A in FIG. 1;
FIG. 11 is a schematic view of a partially enlarged structure of the present invention at B in FIG. 1;
FIG. 12 is a schematic view of a partially enlarged structure of the present invention at C in FIG. 2;
FIG. 13 is a schematic view of a partially enlarged structure of the invention at D in FIG. 5;
fig. 14 is a schematic view of a partially enlarged structure at E in fig. 7 according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
110. a housing; 120. a fertilizing unit; 1201. a fertilization box; 1202. a case cover; 130. a transmission member; 140. a ditching component; 150. a trench shoveling component; 210. a first connection assembly; 2101. a U-shaped rod; 2102. a fixed rod; 2103. a fixing bolt; 2104. a fixing ring; 2105. a connecting bolt; 2106. a first mounting frame; 2107. a second mounting frame; 230. a hydraulic telescopic rod; 240. a buffer assembly; 2401. a telescopic rod; 2402. a buffer spring; 2403. a bottom plate; 250. a shovel assembly; 2501. a fertilizer ditch shovel; 2502. a seed groove shovel; 260. a top plate; 310. a fertilizer box; 3101. a case; 3102. a buffer tank; 3103. a straight pipe; 320. a fertilizer filling box; 330. a fertilizer filling chamber; 3301. a fertilizer filling area; 3302. a fertilizer cleaning area; 3303. a fertilizer protection area; 3304. a fertilizer discharging area; 340. a fertilizer outlet; 350. a fertilizer discharging shaft; 360. a fertilizer wheel; 370. a fifth wheel; 380. a fertilizer filling hole; 390. a brush; 410. a ditching roller; 420. a seed groove disc; 430. a fertilizer ditch disc; 440. a first link; 450. a second link; 460. a first gear; 470. a second gear; 480. a crank; 490. a connecting shaft; 510. a fertilizer guiding pipe; 520. adjusting the head; 530. a protrusion; 540. a cross beam; 550. and (5) covering an iron chain.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "middle," "outer," "inner," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 14, this embodiment shows a ditching device for fertilization of soybean and corn planting soil, which is characterized by comprising: a housing 110, a fertilizing member 120, a transmitting member 130, and a ditching member 140;
the fertilizing part 120 is connected to one side of the housing 110 through a first connecting assembly 210, the ditching part 140 is arranged inside the housing 110, and the fertilizing part 120 is connected with the ditching part 140 through a transmission part 130;
the fertilizer applying component 120 comprises a fertilizer box 310, a fertilizer charging box 320 and a fertilizer discharging component, wherein the fertilizer charging box 320 is connected to the bottom of the fertilizer box 310, the fertilizer discharging component is arranged inside the fertilizer charging box 320, a fertilizer charging chamber 330 is formed inside the fertilizer charging box 320, and a fertilizer outlet 340 is formed in the bottom of the fertilizer charging box 320;
the fertilizer discharging assembly comprises a fertilizer discharging shaft 350, a fertilizer discharging wheel 360 and a connecting wheel 370, wherein the fertilizer discharging shaft 350 is movably arranged on the fertilizer charging box 320 and penetrates through the fertilizer charging chamber 330, the fertilizer discharging wheel 360 and the connecting wheel 370 are arranged on the fertilizer discharging shaft 350, the fertilizer discharging wheel 360 and part of the connecting wheel 370 are positioned in the fertilizer charging chamber 330, the fertilizer charging wheel 360 is provided with a fertilizer charging hole 380, the fertilizer charging hole 380 corresponds to the position of the fertilizer outlet 340, the fertilizer charging chamber 330 comprises a fertilizer charging area 3301, a fertilizer cleaning area 3302, a fertilizer protecting area 3303 and a fertilizer discharging area 3304, the fertilizer charging area 3301 corresponds to the position of the fertilizer box 310, the fertilizer cleaning area 3302 is positioned above the fertilizer discharging wheel 360, the fertilizer discharging area 3304 is positioned below the fertilizer discharging wheel 360 and is positioned above the fertilizer outlet 340, and the fertilizer protecting area 3303 is positioned at the edge position of the fertilizer charging chamber 330 between the fertilizer cleaning area 3302 and the fertilizer discharging area 3304;
the ditching part 140 comprises a ditching roller 410, a seed ditch disc 420 and a fertilizer ditch disc 430, wherein two ends of the ditching roller 410 are respectively movably arranged at two sides of the shell 110 through a connecting shaft 490, a plurality of seed ditch discs 420 and a plurality of fertilizer ditch discs 430 are arranged on the ditching roller 410, the plurality of fertilizer ditch discs 430 and the plurality of seed ditch discs 420 are arranged at equal intervals, and the number and the positions of the fertilizer applying part 120 and the fertilizer ditch discs 430 correspond to each other;
wherein, through setting up ditching roller 410, kind ditch disc 420 and fertile ditch disc 430, after ditching of ditching subassembly, ditching roller 410 is through fertile ditch and kind ditch that have been opened, fertile ditch corresponds fertile ditch disc 430, kind ditch corresponds kind ditch disc 420, fertile ditch disc 430 and kind ditch disc 420 are through fertile ditch and kind ditch when, form regular ditch shape profile through extrusion soil, and fertile ditch disc 430 and kind ditch disc 420 roll in the ditch, guarantee the planarization of railway carriage or compartment face in the ditch, the ditching roller 410 of planting fertilizer cooperates with shovel ditch subassembly each other and forms the fertile ditch of stable degree of depth, increase the stability and the clearance of fertile ditch, prevent soil jam, fertilization efficiency and follow-up field work's convenience have been improved.
The transmission part 130 comprises a first connecting rod 440, a second connecting rod 450, a first gear 460, a second gear 470 and a crank 480, wherein the first connecting rod 440 is connected to a connecting shaft 490, the first gear 460 is movably arranged on the shell 110, the second connecting rod 450 is connected to the first gear 460, the first connecting rod 440 and the second connecting rod 450 are movably matched through the crank 480, the second gear 470 is connected with the fertilizer discharging shaft 350 through a coupling assembly, the first gear 460 is meshed with the second gear 470, and the length of the first connecting rod 440 is equal to that of the second connecting rod 450;
in this embodiment, a housing is disposed around the transmission member 130 for protection;
the first gear 460 and the second gear 470 are replaceable, so that the transmission ratio of the first gear 460 to the second gear 470 can be changed, generally, the diameter of the second gear 470 is larger than that of the first gear 460, the first gear 460 can rotate for half a turn, and the second gear 470 meshed with the first gear 460 can rotate for half a turn or less than half a turn, and at this time, the fertilizer filling hole 380 cannot discharge all fertilizer in the fertilizer;
wherein, by arranging the first connecting rod 440, the second connecting rod 450, the first gear 460, the second gear 470 and the crank 480, when the fertilizer ditch disc 430 and the seed ditch disc 420 roll in the ditch, the ditching roller 410 is driven to rotate, when the ditching roller 410 rotates, the first connecting rod 440 on the connecting shaft 490 connected with the ditching roller is driven to rotate, and the first connecting rod 440, the second connecting rod 450 and the crank 480 form a crank system, when the first connecting rod 440 rotates, the second connecting rod 450 is driven to do half circle reciprocating motion, the second connecting rod 450 drives the first gear 460 to rotate, and because the first gear 460 is meshed with the second gear 470, the second gear 470 can drive the fertilizer discharging shaft 350 to do half circle reciprocating motion to rotate, when fertilizer is discharged, the fertilizer wheel 360 fills a certain amount of fertilizer in the fertilizer filling area 3301, enters the fertilizer protection area 3303 after the fertilizer is removed by the brush 390 of the fertilizer removal area 3302, enters the fertilizer discharge area 3304 from the fertilizer protection area 3303 under the protection of the inner wall of the fertilizer filling chamber 330 and the fertilizer filling holes 380, the granular fertilizer is quickly separated from the fertilizer wheel 360 under the action of gravity and centrifugal force, the agglomerated fertilizer particles enter the fertilizer guide pipe 510 through the fertilizer outlet 340, fall into the fertilizer ditch through the fertilizer guide pipe 510, then perform reset motion, the fertilizer wheel 360 returns to the fertilizer filling area 3301, is filled with fertilizer again, performs reciprocating motion, can discharge the fertilizer in small piles in the fertilizer ditch, and the interval of each fertilizer pile is the diameter of the fertilizer ditch disc 430, so that the positioning fertilization is realized, and the fertilizer utilization rate and the fertilizer efficiency are improved.
In this embodiment, fertilize through filling the fertile hole, under the basis of the ditch of seed manure's ditching roller and shovel ditch subassembly mutually supporting and forming the fertilizer ditch of stable degree of depth, under the condition that the second gear is not changed, the size of first gear equals the second gear, under the condition that the first gear changes half circle, the second gear also changes half circle, all fertilizers in the hole of filling all can discharge, fertilization volume equals all fertilizers in the hole of filling, under the condition that the second gear is changed, fertilization volume is related with the size of changing the second gear, at this moment, the fertilizer in the hole of filling can not all discharge, fertilization volume is less than all fertilizers in the hole of filling, and fertilization volume is related with the transmission ratio of first gear and second gear, can realize quantitative fertilization, improve the utilization efficiency of fertilizer, waste in the prevention fertilization.
In the embodiment, the soybean and corn sowing is fertilized in a hole fertilization mode, and the fertilization hole distance in the field operation of the direct seeding machine is the diameter of the fertilizer ditch disc 430;
the ditching device further comprises a ditching component 150, the ditching component 150 is connected to the shell 110 through a first connecting component 210, the ditching component 150 comprises a hydraulic telescopic rod 230, a buffer component 240 and a shovel component 250, the output end of the hydraulic telescopic rod 230 is connected with a top plate 260, the buffer component 240 comprises a telescopic rod 2401, a buffer spring 2402 and a bottom plate 2403, the bottom plate 2403 is parallel to the top plate 260, the telescopic rods 2401 are divided into two groups, each group comprises four telescopic rods 2401 and four buffer springs 2402, the fixed ends of the telescopic rods 2401 are connected to the top plate 260, the movable ends of the telescopic rods 2401 are connected to the bottom plate 2403, one buffer spring 2502 is sleeved on the telescopic rods 2401, the shovel component 250 comprises a fertilizer ditch 2501 and a seed ditch 2502, the fertilizer ditch 2501 and a plurality of ditch shovels are arranged at the bottom of the bottom plate 2403 in a linear array, the fertilizer ditch 2501 corresponds to the quantity and the positions of the fertilizer ditch disc 430, and the plurality of ditch 2502 correspond to the quantity and the positions of the plurality of kinds of ditch discs 420;
the height of the top plate 260, the buffer assembly 240 at the bottom of the top plate 260 and the height of the iron shovel assembly 250 can be adjusted through the hydraulic telescopic rod 230, the height of the fertilizer trench shovel 2501 and the height of the seed trench shovel 2502 can be adjusted to adapt to various situations during trench digging, and buffer protection can be performed during trench digging through the buffer assembly 240.
The first connecting assembly 210 comprises U-shaped rods 2101, fixing rods 2102, fixing bolts 2103, fixing rings 2104, connecting bolts 2105, first installation frames 2106 and second installation frames 2107, wherein the two U-shaped rods 2101 are installed on the shell 110, one fixing rod 2102 is arranged between the vertical parts of each U-shaped rod 2101, the fixing rods 2102 are connected to the U-shaped rods 2101 through the fixing bolts 2103, one fixing ring 2104 is arranged on the vertical parts of each U-shaped rod 2101, each fixing ring 2104 is connected through a plurality of connecting bolts 2105, the first installation frames 2106 and the second installation frames 2107 are all arranged on the U-shaped rods 2101, the first installation frames 2106 and the second installation frames 2107 are located on two sides of the shell 110, the first installation frames 2106 are connected with the fertilizing components 120, and the second installation frames 2107 are connected with the shovel ditch components 150.
The fertilizing unit 120 further comprises a fertilizing box 1201, the fertilizing box 1201 is connected to the first mounting frame 2106, the fertilizing box 1201 is communicated with the fertilizing box 310, a box cover 1202 is arranged at the top of the fertilizing box 1201, and the box cover 1202 is connected with the fertilizing box 1201 through a hinge;
wherein the cover 1202 encloses the fertilizing box 1201 and prevents the entry of soil into the fertilizing box 1201 during operation.
The fertilizer cleaning area 3302 is internally provided with a brush 390, the brush 390 is positioned above the fertilizer wheel 360, the bottom of the fertilizer charging box 320 is provided with a fertilizer discharging component, the fertilizer discharging component comprises a fertilizer guiding pipe 510 and an adjusting head 520, the fertilizer guiding pipe 510 corresponds to the fertilizer discharging opening 340 in position, and the adjusting head 520 is arranged on the fertilizer guiding pipe 510;
wherein, brush 390 can smooth the arrangement with the fertilizer that fills in the fertilizer hole 380 at the in-process that fertilizer wheel 360 was arranged fertilizer, makes to fill the fertilizer hole 380 and can adorn more fertilizers, and at the in-process that fertilizer wheel 360 resetted, can clean around filling the fertilizer hole 380, has improved the cleanliness of fertilizer wheel 360.
The fertilizer box 310 includes a box body 3101, a buffer box 3102, and a straight pipe 3103, one end of the buffer box 3102 is connected to the box body 3101, and the other end of the buffer box 3102 is connected to the straight pipe 3103.
A plurality of bulges 530 are arranged on each fertilizer ditch disc 430, and the bulges 530 are distributed in a circumferential array at equal intervals;
wherein, the surface roughness of the fertilizer ditch disc 430 can be increased by the arrangement of the protrusions 530, so that the fertilizer ditch disc 430 can smoothly roll in the process of moving in the fertilizer ditch, and the fertilizer ditch disc 430 can rotate more stably.
The shell 110 is provided with a beam 540, the beam 540 is provided with a plurality of earthing iron chains 550, and the earthing iron chains 550 correspond to the fertilizer ditch disks 430 in number and positions;
wherein the earth-covered iron chain 550 is capable of pulling earth at the sides of the trench back into the trench during movement of the device.
The application method of the ditching device for fertilizing the soybean and corn planting soil comprises the following steps:
s1, preparing;
moving the ditching device to the field, putting fertilizer into the fertilizer box 1201, and adjusting the hydraulic telescopic rod 230 to enable the fertilizer ditch shovel 2501 and the seed ditch shovel 2502 to correspond to the positions of the ridges needing ditching;
s2, ditching;
starting a ditching device to enable the ditching device to move and advance in a field, wherein in the moving and advancing process, a plurality of fertilizer ditches are shoveled out by a plurality of fertilizer ditch shovels 2501 in the field ridges, a plurality of ditches are shoveled out by a plurality of ditch shovels 2502 in the field ridges, and a seed ditch is arranged between two fertilizer ditches;
s3, pressing a ditch;
after the ditching assembly ditches, the ditching roller 410 passes through the ditched fertilizer ditches and seed ditches, the fertilizer ditches correspond to the fertilizer ditch discs 430, the seed ditches correspond to the seed ditch discs 420, the fertilizer ditch discs 430 and the seed ditch discs 420 form regular ditch-shaped outlines by extruding soil when passing through the fertilizer ditches and the seed ditches, and the fertilizer ditch discs 430 and the seed ditch discs 420 roll in the ditches;
s3, transmission;
when the fertilizer ditch disc 430 and the seed ditch disc 420 roll in the ditches, the ditching roller 410 is driven to rotate, when the ditching roller 410 rotates, the first connecting rod 440 on the connecting shaft 490 connected with the ditching roller is driven to rotate, and the first connecting rod 440, the second connecting rod 450 and the crank 480 form a crank system, when the first connecting rod 440 rotates, the second connecting rod 450 is driven to do half circle reciprocating motion, the second connecting rod 450 drives the first gear 460 to rotate, and as the first gear 460 is meshed with the second gear 470, the second gear 470 drives the fertilizer discharging shaft 350 to rotate;
s4, fertilizer discharge;
the fertilizer in the fertilizer box 1201 enters the fertilizer box 310, the fertilizer in the fertilizer box 310 enters the fertilizer filling chamber 330 in the fertilizer filling box 320, when the fertilizer discharging assembly works, the fertilizer discharging shaft drives the fertilizer discharging wheel 360 to synchronously rotate, the fertilizer discharging wheel 360 enters the fertilizer protecting area 3303 after a certain amount of fertilizer is filled in the fertilizer filling area 3301 and is cleaned by the brush 390 of the fertilizer cleaning area 3302, the fertilizer enters the fertilizer discharging area 3304 from the fertilizer protecting area 3303 under the protection of the inner wall of the fertilizer filling chamber 330 and the fertilizer filling holes 380, the granular fertilizer is quickly separated from the fertilizer discharging wheel 360 under the action of gravity and centrifugal force, and the clustered fertilizer particles enter the fertilizer guiding pipe 510 through the fertilizer outlet 340 and fall into a fertilizer ditch through the fertilizer guiding pipe 510, so that the quantitative cavitation fertilizer discharging process is completed;
the shape and size of the fertilizer filling holes 380 have a significant effect on the hole volume and the fertilizer filling and discharging links. In order to meet the requirement of easy filling and continuous cavitation discharge of the granular fertilizer, inclined holes are adopted;
s5, earthing;
after the fertilizer is discharged, the earthing iron chain 550 behind the fertilizer discharging component fills the soil around the fertilizer ditch into the fertilizer ditch, and the final stage of fertilizer application is completed.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. The ditching device for the fertilization of the soybean and corn planting soil is characterized by comprising a shell (110), a fertilization component (120), a transmission component (130) and a ditching component (140);
the fertilizing component (120) is connected to one side of the shell (110) through a first connecting component (210), the ditching component (140) is arranged on the inner side of the shell (110), and the fertilizing component (120) is connected with the ditching component (140) through a transmission component (130);
the fertilizing component (120) comprises a fertilizer box (310), a fertilizer charging box (320) and a fertilizer discharging assembly, wherein the fertilizer charging box (320) is connected to the bottom of the fertilizer box (310), the fertilizer discharging assembly is arranged inside the fertilizer charging box (320), a fertilizer charging chamber (330) is formed inside the fertilizer charging box (320), and a fertilizer outlet (340) is formed in the inner bottom of the fertilizer charging box (320);
the fertilizer discharging assembly comprises a fertilizer discharging shaft (350), a fertilizer discharging wheel (360) and a connecting wheel (370), wherein the fertilizer discharging shaft (350) is movably arranged on a fertilizer charging box (320) and penetrates through a fertilizer charging chamber (330), the fertilizer discharging wheel (360) and the connecting wheel (370) are arranged on the fertilizer discharging shaft (350), the fertilizer discharging wheel (360) and part of the connecting wheel (370) are arranged in the fertilizer charging chamber (330), fertilizer charging holes (380) are formed in the fertilizer discharging wheel (360), the positions of the fertilizer charging holes (380) and a fertilizer outlet (340) correspond to each other, the fertilizer charging chamber (330) comprises a fertilizer charging area (3301), a fertilizer cleaning area (3302), a fertilizer protecting area (3303) and a fertilizer discharging area (3304), the fertilizer charging area (3301) corresponds to the position of the fertilizer box (310), the fertilizer cleaning area (3302) is arranged above the fertilizer discharging wheel (360), the fertilizer discharging area (3304) is arranged below the fertilizer discharging wheel (360), and the fertilizer discharging area (3304) is arranged between the positions of the fertilizer discharging area (3302) and the fertilizer outlet (340) and the fertilizer discharging area (3304);
the ditching part (140) comprises a ditching roller (410), a seed ditch disc (420) and a fertilizer ditch disc (430), wherein two ends of the ditching roller (410) are movably arranged on two sides of the shell (110) through a connecting shaft (490), a plurality of seed ditch discs (420) and a plurality of fertilizer ditch discs (430) are arranged on the ditching roller (410), a plurality of fertilizer ditch discs (430) and a plurality of kinds of ditch discs (420) are arranged at equal intervals, and the number and the positions of the fertilizer applying parts (120) and the fertilizer ditch discs (430) are corresponding;
the transmission part (130) comprises a first connecting rod (440), a second connecting rod (450), a first gear (460), a second gear (470) and a crank (480), wherein the first connecting rod (440) is connected to a connecting shaft (490), the first gear (460) is movably arranged on the shell (110), the second connecting rod (450) is connected to the first gear (460), the first connecting rod (440) and the second connecting rod (450) are in movable fit through the crank (480), the second gear (470) is connected with the fertilizer discharging shaft (350) through a coupling assembly, the first gear (460) is meshed with the second gear (470), and the length of the first connecting rod (440) is equal to that of the second connecting rod (450).
2. The ditching device for fertilizing soybean and corn planting soil according to claim 1, wherein: further comprises a shovel component (150), the shovel component (150) is connected to the shell (110) through a first connecting component (210), the ditch member (150) includes a hydraulic telescoping wand (230), a cushioning assembly (240), and a shovel assembly (250), the output end of the hydraulic telescopic rod (230) is connected with a top plate (260), the buffer assembly (240) comprises a telescopic rod (2401), a buffer spring (2402) and a bottom plate (2403), the bottom plate (2403) is parallel to the top plate (260), the telescopic rods (2401) are divided into two groups, each group is provided with four telescopic rods (2401) and four buffer springs (2402), the fixed end of the telescopic rod (2401) is connected to the top plate (260), the movable end of the telescopic rod (2401) is connected to the bottom plate (2403), a buffer spring (2402) is sleeved on the telescopic rod (2401), the iron shovel assembly (250) comprises a fertilizer ditch shovel (2501) and a seed ditch shovel (2502), wherein a plurality of the fertilizer ditch shovels (2501) and a plurality of the ditch shovels (2502) are arranged at the bottom of the bottom plate (2403) in a linear array mode, the fertilizer ditch shovels (2501) correspond to the fertilizer ditch disks (430) in number and positions, and the seed ditch shovels (2502) correspond to the ditch disks (420) in number and positions.
3. The ditching device for fertilizing soybean and corn planting soil according to claim 2, wherein: the utility model provides a fertilizer application shovel comprises a casing (110), a first coupling assembly (210), a first fertilizer application shovel (150) and a second fertilizer application shovel (150), wherein the first coupling assembly (210) comprises a U-shaped rod (2101), a fixing rod (2102), fixing bolts (2103), fixing rings (2104), connecting bolts (2105), a first mounting rack (2106) and a second mounting rack (2107), the U-shaped rod (2101) is installed on the casing (110), each fixing rod (2102) is arranged between the vertical parts of the U-shaped rod (2101), the fixing rods (2102) are connected on the U-shaped rod (2101) through the fixing bolts (2103), each fixing ring (2104) is respectively arranged on the vertical parts of the U-shaped rod (2101), each fixing ring (2104) is connected through a plurality of connecting bolts (2105), and the first mounting rack (2106) and the second mounting rack (2107) are all arranged on the U-shaped rod (2101), and the first mounting rack (2106) and the second mounting rack (2107) are arranged on two sides of the casing (110).
4. A soybean and corn planting soil fertilizing furrowing device as recited in claim 3, wherein: the fertilizing unit (120) further comprises a fertilizing box (1201), the fertilizing box (1201) is connected to the first mounting frame (2106), the fertilizing box (1201) is communicated with the fertilizing box (310), a box cover (1202) is arranged at the top of the fertilizing box (1201), and the box cover (1202) is connected with the fertilizing box (1201) through a hinge.
5. The ditching device for fertilizing soybean and corn planting soil according to claim 4, wherein: be provided with brush (390) in clear fertile district (3302), brush (390) are located fertilizer wheel (360) top, it is provided with out fertile subassembly to fill fertile case (320) bottom, it includes fertilizer pipe (510) and adjusts head (520) to go out fertile subassembly, fertilizer pipe (510) correspond with a fertile mouthful (340) position of play, adjust head (520) setting on fertilizer pipe (510).
6. The ditching device for fertilizing soybean and corn planting soil according to claim 5, wherein: the fertilizer box (310) comprises a box body (3101), a buffer box (3102) and a straight pipe (3103), wherein one end of the buffer box (3102) is connected to the box body (3101), and the other end of the buffer box (3102) is connected to the straight pipe (3103).
7. The ditching device for fertilizing soybean and corn planting soil according to claim 6, wherein: each fertilizer ditch disc (430) is provided with a plurality of bulges (530), and the bulges (530) are distributed in a circumferential array at equal intervals.
8. The ditching device for fertilizing soybean and corn planting soil according to claim 7, wherein: be provided with crossbeam (540) on casing (110), be provided with a plurality of earthing iron chains (550) on crossbeam (540), a plurality of earthing iron chains (550) correspond with the quantity and the position of a plurality of fertile ditch disc (430).
9. The method for using the ditching device for fertilizing the soybean and corn planting soil according to claim 8, wherein the method comprises the following steps: the method comprises the following steps:
s1, preparing;
moving the ditching device to the field, putting fertilizer into a fertilizer box (1201), and adjusting a hydraulic telescopic rod (230) to enable a fertilizer ditch shovel (2501) and a seed ditch shovel (2502) to correspond to the positions of ridges needing ditching;
s2, ditching;
starting a ditching device to enable the ditching device to move and advance in a field, wherein in the moving and advancing process, a plurality of fertilizer ditches are shoveled out by a plurality of fertilizer ditch shovels (2501) in the field ridges, a plurality of ditches are shoveled out by a plurality of ditch shovels (2502) in the field ridges, and a seed ditch is arranged between two fertilizer ditches;
s3, pressing a ditch;
after the ditching assembly ditches, the ditching roller (410) passes through the ditched fertilizer ditches and seed ditches, the fertilizer ditches correspond to fertilizer ditch discs (430), the seed ditches correspond to seed ditch discs (420), when the fertilizer ditch discs (430) and the seed ditch discs (420) pass through the fertilizer ditches and the seed ditches, regular ditch-shaped outlines are formed by extruding soil, and the fertilizer ditch discs (430) and the seed ditch discs (420) roll in the ditches;
s3, transmission;
when the fertilizer ditch disc (430) and the seed ditch disc (420) roll in the ditches, the ditching roller (410) is driven to rotate, when the ditching roller (410) rotates, the first connecting rod (440) on the connecting shaft (490) connected with the ditching roller is driven to rotate, the first connecting rod (440), the second connecting rod (450) and the crank (480) form a crank system, when the first connecting rod (440) rotates, the second connecting rod (450) is driven to do half circle reciprocating motion, the second connecting rod (450) drives the first gear (460) to rotate, and the first gear (460) is meshed with the second gear (470), so that the second gear (470) can drive the fertilizer discharging shaft (350) to rotate;
s4, fertilizer discharge;
the fertilizer in the fertilizer box (1201) enters the fertilizer box (310), the fertilizer in the fertilizer box (310) enters a fertilizer filling chamber (330) in a fertilizer filling box (320), when the fertilizer discharging assembly works, a fertilizer discharging shaft drives a fertilizer discharging wheel (360) to synchronously rotate, the fertilizer discharging wheel (360) is filled with a certain amount of fertilizer in a fertilizer filling area (3301), the fertilizer enters a fertilizer protecting area (3303) after being cleaned by a brush (390) of a fertilizer cleaning area (3302), the fertilizer enters a fertilizer discharging area (3304) from the fertilizer protecting area (3303) under the protection of the inner wall of the fertilizer filling chamber (330) and a fertilizer filling hole (380), granular fertilizer is quickly separated from the fertilizer discharging wheel (360) under the action of gravity and centrifugal force, and clustered fertilizer particles enter a fertilizer guide pipe (510) through a fertilizer outlet (340) and fall into a fertilizer ditch through the fertilizer guide pipe (510), so that the quantitative hole forming and fertilizer discharging process is completed;
s5, earthing;
after the fertilizer is discharged, a soil covering iron chain (550) behind the fertilizer discharging assembly fills soil around the fertilizer ditch into the fertilizer ditch, and the final stage of fertilizer application is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310287807.7A CN115989727B (en) | 2023-03-23 | 2023-03-23 | Ditching device for soybean and corn planting soil fertilization and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310287807.7A CN115989727B (en) | 2023-03-23 | 2023-03-23 | Ditching device for soybean and corn planting soil fertilization and use method |
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| CN115989727B CN115989727B (en) | 2023-05-23 |
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| CN115989727B (en) | 2023-05-23 |
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Inventor after: Zhang Haipeng Inventor after: Ding Wenjin Inventor after: Xing Yan Inventor after: Wang Pengju Inventor before: Zhang Haipeng Inventor before: Ding Wenjin Inventor before: Xing Yan Inventor before: Wang Pengju |