CN104488426A - Fertilizing and film coating machine - Google Patents
Fertilizing and film coating machine Download PDFInfo
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- CN104488426A CN104488426A CN201410760794.1A CN201410760794A CN104488426A CN 104488426 A CN104488426 A CN 104488426A CN 201410760794 A CN201410760794 A CN 201410760794A CN 104488426 A CN104488426 A CN 104488426A
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- fertilizing
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- film coating
- covering device
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Abstract
The invention discloses a fertilizing and film coating machine. The fertilizing and film coating machine comprises a rack, wherein a triangular lifting stand is arranged at the front end of the rack; a fertilizing device is arranged at the rear part of the triangular lifting stand, and travelling wheels are arranged below the triangular lifting stand; a film coating device and a hilling device are arranged at the rear part of the fertilizing device. Compared with the prior art, the fertilizing and film coating machine has the advantages that the mode of fertilizing and coating films from two upper sides of ridges is performed; a four-wheel tractor and other mechanical vehicles can be used in match with the fertilizing and film coating machine to be used; the operation is implemented by two operators, and fertilizer application and the film coating can be complemented at a time; the whole machine is compact and reasonable in structure, lightweight, and attractive in appearance; both time and labor are saved; the labor intensity is alleviated; the working efficiency is improved; the defects that the existing fertilizing device employing the film coating machine and the film coating machine are poor in adjustability, the fertilizing and film coating machines with different sizes are needed for tilling different lands, the cost is relatively high, the function is simple, the size is large, and the turning is inconvenient can be overcome.
Description
Technical field
The invention belongs to agricultural machinery technological field, be specifically related to a kind of Fertilizing film overlying machine.
Background technology
At present, due to the continuous innovation of farming technique, in some agricultural crops fields, as tobacco, vegetables, the technical fields such as fruit tree, to carry out applying fertilizer and overlay film simultaneously, existing Fertilizing film overlying machine is when specific works, harmony between fertilising and overlay film is bad, action is more single, especially laminating machine plastic film mulch after fertilizer apparatus, again by press mold wheel load after completing, earthing plough shovel earthing epiphragma, physical dimension is large, the postpone of facility center of gravity, inconvenient operation during unit work, and the controllability of fertilizer apparatus and film covering device is poor, the Fertilizing film overlying machine of different arable land different sizes completes farming, cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is that the controllability of the fertilizer apparatus of existing Fertilizing film overlying machine and film covering device is poor, the Fertilizing film overlying machine of different arable land different sizes completes farming, cost is higher, for solving the problem, the invention provides a kind of Fertilizing film overlying machine.
The object of the invention is to realize in the following manner:
A kind of Fertilizing film overlying machine, comprise frame, the front end of described frame is provided with triangle crane, and triangle crane rear portion is provided with fertilizer apparatus, and below is provided with road wheel, and the rear portion of fertilizer apparatus is provided with film covering device and banker.
Described fertilizer apparatus comprises hopper, spiral material toggling axle is provided with in the middle part of hopper, spiral material toggling axle is provided with rod for stiring materials, feed hopper bottom is provided with the bull stick of discharging opening and adjustment discharging opening size, bull stick one end is provided with adjustment silk wheel, the other end is connected with the first chain, the front lower place of hopper is provided with a screw rod, the other end of the first chain is connected with the first rotating disk of screw rod end, screw rod is positioned on the second rotating disk inside the first rotating disk and is provided with the second chain, the other end of the second chain is connected with the rotating shaft of road wheel, spiral material toggling axle is connected with the first rotating disk by the 3rd chain near one end of the first rotating disk, position corresponding with discharging opening on bull stick is provided with shutoff annulus, an over cap is provided with above the first rotating disk.
Described fertilizer apparatus also comprises fertilizer applicator, and feed hopper bottom is provided with at least two slide bars, and fertilizer applicator is sheathed on slide bar by activity about screw; Described fertilizer applicator comprises the defertilizing tongue on top, and the first middle sleeve and the second sleeve of bottom, the bottom of the second sleeve is provided with loosening device.
The middle part of described frame is provided with a cross bar, and the centre position of cross bar is provided with the first fixture, and the large plough of fluting is sheathed in the first fixture, is fixed by screw.
The rear end described frame being positioned at cross bar is provided with the little plough of fluting and ground film rack for subsequent use, frame is welded with the second fixture comprising at least two holes, and slot little plough and ground film rack for subsequent use are screwed in the different hole of the second fixture.
Described frame is positioned at the second fixture rear end and is provided with fixed screw, described film covering device comprises ground film rack, and the cross tube of ground film rack is provided with fixing hole, and cross tube one end is connected with the first vertical bar, the other end is connected with the second vertical bar, and the second vertical bar bottom is connected with mulch film bar; Described fixing hole is at least two; A fixed transverse rod is provided with between described first vertical bar and the second vertical bar.
Described frame is positioned at fixed screw rear end to be provided with the 3rd fixture film pressing device comprising at least one hole and to comprise the first press mold bar, the second press mold bar and pressing wheel, first press mold bar and the second press mold bar are fixedly connected on a jackshaft by iron wire, and the second press mold bar bottom arranges pressing wheel.
The rearmost end of described frame is provided with the 3rd sleeve and the 4th sleeve, and one end of the 4th sleeve is provided with a cylinder, and the earthing-up plow of described banker is sheathed in cylinder, and is screwed.
Relative to prior art, the present invention is a kind of novel fertilizer application laminating machine, and adopt bilateral fertilising film coating operation mode on ridge, the motor vehicles and machines such as four-wheel tractor all can use in supporting the present invention, and two people's operations, disposablely can complete fertilising film coating operation.Compact integral structure rationally, lightly attractive in appearance, saving of labor, save time, reduce labour intensity, increase work efficiency, the controllability overcoming the fertilizer apparatus of the laminating machine used at present and film covering device is poor, the Fertilizing film overlying machine of different arable land different sizes completes farming, cost is higher, function singleness, volume is large, the shortcomings such as inconvenience of turning.
The invention discloses a kind of Fertilizing film overlying machine, comprise frame, the front end of described frame is provided with triangle crane, and triangle crane rear portion is provided with fertilizer apparatus, and below is provided with road wheel, and the rear portion of fertilizer apparatus is provided with film covering device and banker.Relative to prior art, the present invention is a kind of novel fertilizer application laminating machine, and adopt bilateral fertilising film coating operation mode on ridge, the motor vehicles and machines such as four-wheel tractor all can use in supporting the present invention, and two people's operations, disposablely can complete fertilising film coating operation.Compact integral structure rationally, lightly attractive in appearance, saving of labor, save time, reduce labour intensity, increase work efficiency, the controllability overcoming the fertilizer apparatus of the laminating machine used at present and film covering device is poor, the Fertilizing film overlying machine of different arable land different sizes completes farming, cost is higher, function singleness, volume is large, the shortcomings such as inconvenience of turning.
Accompanying drawing explanation
Fig. 1 is end view of the present invention.
Fig. 2 is part-structure schematic diagram of the present invention.
Fig. 3 is the vertical view of hopper.
Fig. 4 is the structural representation of spiral material toggling axle.
Fig. 5 is the structural representation of chain coupling part.
Fig. 6 is the vertical view of the second chain connection structure.
Fig. 7 is the structural representation of fertilizer applicator.
Fig. 8 is the structural representation of film pressing device.
Fig. 9 is the structural representation of banker.
Figure 10 is the structural representation of ground film rack.
Wherein, 1 is frame; 2 is fertilizer apparatuses; 3 is road wheels; 4 is film covering devices; 5 is bankers; 6 is triangle cranes; 7 is hoppers; 8 is discharging openings; 9 is spiral material toggling axles; 10 is rod for stiring materials; 11 is bull sticks; 12 is adjustment silk wheels; 13 is first chains; 14 is screw rods; 15 is first rotating disks; 16 is second rotating disks; 17 is second chains; 18 is rotating shafts; 19 is shutoff annulus; 20 is fertilizer applicators; 21 is slide bars; 22 is defertilizing tongues; 23 is first sleeves; 24 is second sleeves; 25 is loosening devices; 26 is cross bars; 27 is the large ploughs of fluting; 28 is first fixtures; 29 is the little ploughs 2 of fluting; 30 is ground film racks for subsequent use; 31 is second fixtures; 32 is fixed screws; 33 is ground film racks; 34 is cross tubes; 35 is fixing holes; 36 is the 3rd fixtures; 37 is film pressing devices; 38 is first press mold bars; 39 is second press mold bars; 40 is pressing wheels; 41 is earthing-up plows; 42 is the 3rd sleeves; 43 is the 4th sleeves; 44 is cylinders; 45 is the 3rd chains; 46 is over caps; 47 is first vertical bars; 48 is second vertical bars; 49 is mulch film bars; 50 is fixed transverse rods.
Embodiment
As Figure 1-10 shows, a kind of Fertilizing film overlying machine, comprises frame 1, the front end of described frame 1 is provided with triangle crane 6, triangle crane 6 rear portion is provided with fertilizer apparatus 2, and below is provided with road wheel 3, and the rear portion of fertilizer apparatus 2 is provided with film covering device 4 and banker 5.Fertilizing film overlying machine, by triangle crane 6, supports the use with motor vehicles and machines such as four-wheel tractors.
Described fertilizer apparatus 2 comprises hopper 7, spiral material toggling axle 9 is provided with in the middle part of hopper 7, spiral material toggling axle 9 is provided with rod for stiring materials 10, the bull stick 11 of discharging opening 8 and adjustment discharging opening 8 size is provided with bottom hopper 7, bull stick 11 one end is provided with adjustment silk wheel 12, the other end is connected with the first chain 13, a screw rod 14 is provided with in the front lower place of hopper 7, the other end of the first chain 13 is connected with the first rotating disk 15 of screw rod 14 end, screw rod 14 is positioned on the second rotating disk 16 inside the first rotating disk 15 and is provided with the second chain 17, the other end of the second chain 17 is connected with the rotating shaft 18 of road wheel 3, spiral material toggling axle 9 is connected with the first rotating disk 15 by the 3rd chain 45 near one end of the first rotating disk 15, position corresponding with discharging opening 8 on bull stick 11 is provided with shutoff annulus 19, an over cap 46 is provided with above the first rotating disk 15.
The adjustment of fertilising flow: have adjustment jackscrew in the first rotating disk 15 arranged outside of screw rod 14, under fertilising overlay film state, adjustment jackscrew is tightened, when needs regulated fertilization flow, first adjustment jackscrew is unclamped, the adjustment silk wheel 12 of adjustment screw rod 14 other end, move in the direction of the clock, screw rod 14 is moved to the direction of adjustment jackscrew, like this, shutoff annulus 19 can move along with the direction of screw rod 14 to adjustment jackscrew, and discharging opening 8 is diminished by the part of shutoff annulus 19 shutoff, discharging opening 8 increases, and fertilizing amount increases; Otherwise, fertilizing amount can be turned down.Jackscrew locking will be adjusted after adjustment, again adjustment silk wheel 12 is reversed half-turn to the position that do not stress, to reduce the friction that rotating screw bolt 14 and adjustment silk take turns 12, the adjustment silk nut trim ring inside 12 taken turns by finally locking adjustment silk, screw rod 14 is fixed, makes it no longer move left and right.
By the connection of chain, when Fertilizing film overlying machine is gone ahead by four-wheel tractor drive, road wheel 3 rotates, rotating shaft 18 is driven to rotate, rotating shaft 18 drives screw rod 14 to rotate by the second chain 17, and screw rod 14 drives bull stick 11 to rotate, along with the rotation of bull stick 11 by the first chain 13, fertilizer is flowed out by discharging opening 8, enters into fertilizer applicator 20.It is faster that Fertilizing film overlying machine runs forward, and it is faster that bull stick 11 rotates, and the speed that fertilizer flows out is also faster.Meanwhile, spiral material toggling axle 9 is connected with screw rod 14 by the 3rd chain 45, and screw rod 14 rotates, and drives the rotation of spiral material toggling axle 9, rod for stiring materials 10 is moved in a circle in hopper 7, constantly stirs fertilizer, makes fertilizer keep loose, avoids fertilizer to block discharging opening 8.Over cap 46 is used for protection first chain 13 and the 3rd chain 45 and avoids sleety weather, because chain easily gets rusty after meeting water, and the life cycle of shortening chains.
Described fertilizer apparatus 2 also comprises fertilizer applicator 20, is provided with at least two slide bars 21 bottom hopper 7, and fertilizer applicator 20 is sheathed on slide bar 21 by activity about screw; Described fertilizer applicator 20 comprises the defertilizing tongue 22 on top, and the bottom of the first middle sleeve 23 and the second sleeve 24, second sleeve 24 of bottom is provided with loosening device 25.Fertilizer applicator 20 is sheathed on slide bar 21, and after being unscrewed by the fixed screw of fertilizer applicator 20, fertilizer applicator 20 can move left and right along slide bar 21, the width between such fertilizer applicator 20 and adjustable, to adapt to the different row spacings of Different Crop.It is inner that second sleeve 24 is sheathed on the first sleeve 23, and by the height regulating the second sleeve 24 to be set in the first sleeve 23 inside, can adjust the height of fertilizer applicator, the degree of depth of namely applying fertilizer can regulate.
The middle part of described frame 1 is provided with a cross bar 26, and the centre position of cross bar 26 is provided with the first fixture 28, and the large plough 27 of fluting is sheathed in the first fixture 28, is fixed by screw.
The height of the large plough 27 of adjustment fluting: first the fixed screw of the first fixture 28 is unscrewed, the up and down large plough 27 of adjustment fluting, then fixed screw is tightened.The Main Function of the large plough 27 of fluting is grooves that a strip is opened in the centre position of film, sleet water can be entered in ridge, make full use of sleet water resource.
The rear end described frame 1 being positioned at cross bar 26 is provided with the little plough 29 of fluting and ground film rack for subsequent use 30, frame 1 is welded with the second fixture 31 comprising at least two holes, slot little plough 29 and ground film rack for subsequent use 30 are screwed in the different hole of the second fixture 31.
The adjustment little plough 29 of fluting and the height of ground film rack for subsequent use 30 and width: first unscrewed by the fixed screw of the second fixture 31, up and down or the left and right adjustment little plough 29 of fluting and ground film rack for subsequent use 30, then tighten fixed screw.The Main Function of little plough 29 of slotting is grooves that two side positions of film open a strip, sleet water can be entered in ridge, make full use of sleet water resource; The Main Function of ground film rack 30 for subsequent use places mulch film for subsequent use, because field is generally long, needs staff to go to get mulch film again, lose time after avoiding mulch film to be finished.
Described frame 1 is positioned at the second fixture 31 rear end and is provided with fixed screw 32, described film covering device 4 comprises ground film rack 33, the cross tube 34 of ground film rack 33 is provided with fixing hole 35, cross tube 34 one end is connected with the first vertical bar 47, the other end is connected with the second vertical bar 48, and the second vertical bar 48 bottom is connected with mulch film bar 49; Described fixing hole 35 is at least two; Be provided with a fixed transverse rod 50 between described first vertical bar 47 and the second vertical bar 48, ground film rack 33 is fixed in frame 1 by fixed screw 32.
The width of adjustment ground film rack 33: first unscrewed by fixed screw 32, move left and right mulch film frame 33, use different fixing holes 35, can reach the object of the width of adjustment ground film rack 33.
Described frame 1 is positioned at fixed screw 32 rear end and is provided with the 3rd fixture 36 comprising at least one hole, film pressing device 37 comprises the first press mold bar 38, second press mold bar 39 and pressing wheel 40, first press mold bar 38 and the second press mold bar 39 are fixedly connected on a jackshaft by iron wire, and the second press mold bar 39 bottom arranges pressing wheel 40.
Adjustment film pressing device 37 width and height: first the fixed screw of the 3rd fixture 36 is unscrewed, then left and right or up and down adjust film pressing device 37, can reach adjustment film pressing device 37 width and height object.First press mold bar 38 and the second press mold bar 39 are fixedly connected on a jackshaft by iron wire, when running into harder soil block or other objects, second press mold bar 39 can drive pressing wheel 40 to move up, walk around hard soil block, move forward in order to avoid pressing wheel 40 pushes soil block always, mulch film is damaged.
One end that the rearmost end of described frame 1 is provided with the 3rd sleeve 42 and the 4th sleeve the 43, four sleeve 43 is provided with a cylinder 44, and the earthing-up plow 41 of described banker 5 is sheathed in cylinder 44, and is screwed.
Adjust the width of earthing-up plow 41, the degree of depth and angle: unscrewed by the fixed screw outside the 3rd sleeve 42, left and right adjusting the 4th sleeve 43, the i.e. width of adjustable earthing-up plow 41; Fixed screw outside cylinder 44 is unscrewed, up and down adjustment or left-right rotation earthing-up plow 41, i.e. the working depth of adjustable earthing-up plow 41 and angle.
The course of work of the present invention is as follows: be connected with four-wheel tractor by Fertilizing film overlying machine, fertilizer is put into hopper 7, mulch film is placed on ground film rack 33, and mulch film for subsequent use is placed on ground film rack 30 for subsequent use, open four-wheel tractor, make four-wheel tractor drive Fertilizing film overlying machine to go ahead.Along with Fertilizing film overlying machine is gone ahead, the fertilizer in hopper 7 enters in fertilizer applicator 20 by discharging opening 8, and loosening device 25 stretches into deep subsoil, is sprinkling upon by fertilizer in soil; Mulch film on ridge, is then pushed down by pressing wheel 40 by film covering device 4 by plastic mulching, in order to avoid mulch film blows afloat by wind, and then, soil is trained on mulch film by earthing-up plow 41, makes soil push down mulch film.When raining or when snowing, the large plough 27 of fluting and the little plough 29 of fluting can being utilized to slot on mulch film, make sleet water flow in alley, store sleet water resource, to reach the object of irrigation.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for a person skilled in the art, and not departing under general idea prerequisite of the present invention, can also make some changes and improvements, these also should be considered as protection scope of the present invention.
Claims (8)
1. a Fertilizing film overlying machine, comprise frame (1), it is characterized in that: the front end of described frame (1) is provided with triangle crane (6), triangle crane (6) rear portion is provided with fertilizer apparatus (2), below is provided with road wheel (3), and the rear portion of fertilizer apparatus (2) is provided with film covering device (4) and banker (5).
2. one fertilising film covering device according to claim 1, it is characterized in that: described fertilizer apparatus (2) comprises hopper (7), hopper (7) middle part is provided with spiral material toggling axle (9), spiral material toggling axle (9) is provided with rod for stiring materials (10), hopper (7) bottom is provided with the bull stick (11) of discharging opening (8) and adjustment discharging opening (8) size, bull stick (11) one end is provided with adjustment silk wheel (12), the other end is connected with the first chain (13), the front lower place of hopper (7) is provided with a screw rod (14), the other end of the first chain (13) is connected with first rotating disk (15) of screw rod (14) end, screw rod (14) is positioned on the second rotating disk (16) inside the first rotating disk (15) and is provided with the second chain (17), the other end of the second chain (17) is connected with the rotating shaft (18) of road wheel (3), spiral material toggling axle (9) is connected with the first rotating disk (15) by the 3rd chain (45) near one end of the first rotating disk (15), the upper position corresponding with discharging opening (8) is provided with shutoff annulus (19) with bull stick (11), first rotating disk (15) top is provided with an over cap (46).
3. one fertilising film covering device according to claim 2, it is characterized in that: described fertilizer apparatus (2) also comprises fertilizer applicator (20), hopper (7) bottom is provided with at least two slide bars (21), and fertilizer applicator (20) is sheathed on slide bar (21) by activity about screw; Described fertilizer applicator (20) comprises the defertilizing tongue (22) on top, and middle the first sleeve (23) and second sleeve (24) of bottom, the bottom of the second sleeve (24) is provided with loosening device (25).
4. one fertilising film covering device according to claim 1, it is characterized in that: the middle part of described frame (1) is provided with a cross bar (26), the centre position of cross bar (26) is provided with the first fixture (28), the large plough (27) of fluting is sheathed in the first fixture (28), is fixed by screw.
5. one fertilising film covering device according to claim 1, it is characterized in that: the rear end described frame (1) being positioned at cross bar (26) is provided with the little plough of fluting (29) and ground film rack for subsequent use (30), frame (1) is welded with the second fixture (31) comprising at least two holes, slot little plough (29) and ground film rack for subsequent use (30) are screwed in the different hole of the second fixture (31).
6. one fertilising film covering device according to claim 1, it is characterized in that: described frame (1) is positioned at the second fixture (31) rear end and is provided with fixed screw (32), described film covering device (4) comprises ground film rack (33), the cross tube (34) of ground film rack (33) is provided with fixing hole (35), cross tube (34) one end is connected with the first vertical bar (47), the other end is connected with the second vertical bar (48), and the second vertical bar (48) bottom is connected with mulch film bar (49); Described fixing hole (35) is at least two; A fixed transverse rod (50) is provided with between described first vertical bar (47) and the second vertical bar (48).
7. one fertilising film covering device according to claim 1, it is characterized in that: described frame (1) is positioned at fixed screw (32) rear end and is provided with the 3rd fixture (36) comprising at least one hole, film pressing device (37) comprises the first press mold bar (38), the second press mold bar (39) and pressing wheel (40), first press mold bar (38) and the second press mold bar (39) are fixedly connected on a jackshaft by iron wire, and the second press mold bar (39) bottom arranges pressing wheel (40).
8. one fertilising film covering device according to claim 1, it is characterized in that: the rearmost end of described frame (1) is provided with the 3rd sleeve (42) and the 4th sleeve (43), one end of 4th sleeve (43) is provided with a cylinder (44), the earthing-up plow (41) of described banker (5) is sheathed in cylinder (44), and is screwed.
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CN201410760794.1A CN104488426B (en) | 2014-12-12 | 2014-12-12 | Fertilizing and laminating machine |
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CN201410760794.1A CN104488426B (en) | 2014-12-12 | 2014-12-12 | Fertilizing and laminating machine |
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CN104488426A true CN104488426A (en) | 2015-04-08 |
CN104488426B CN104488426B (en) | 2023-09-22 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106427448A (en) * | 2016-11-21 | 2017-02-22 | 福建农林大学 | Sloping land film covering machine capable of adjusting drive wheels and working method thereof |
CN109479447A (en) * | 2018-08-31 | 2019-03-19 | 禹州森茂迷迭香生物科技有限公司 | A kind of Cortex Eucommiae field adjustable-width fertilizer applicator |
CN111955329A (en) * | 2020-09-07 | 2020-11-20 | 王富英 | Accurate fertilizer injection unit |
US11006587B2 (en) | 2018-08-29 | 2021-05-18 | DHG, Inc. | Material application system with vibrating sail plate |
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JPH0856427A (en) * | 1994-08-19 | 1996-03-05 | Taki Noukougu Kk | Mulch device for simultaneous fertilizing and seeding |
CN2263867Y (en) * | 1996-05-21 | 1997-10-08 | 王称心 | Fertilizing film overlying machine |
CN201609019U (en) * | 2010-02-11 | 2010-10-20 | 田甲忠 | Multifunctional fertilizing and ridging mulch applicator |
CN204518440U (en) * | 2014-12-12 | 2015-08-05 | 郑州智联自动化设备有限公司 | A kind of Fertilizing film overlying machine |
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2014
- 2014-12-12 CN CN201410760794.1A patent/CN104488426B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0856427A (en) * | 1994-08-19 | 1996-03-05 | Taki Noukougu Kk | Mulch device for simultaneous fertilizing and seeding |
CN2263867Y (en) * | 1996-05-21 | 1997-10-08 | 王称心 | Fertilizing film overlying machine |
CN201609019U (en) * | 2010-02-11 | 2010-10-20 | 田甲忠 | Multifunctional fertilizing and ridging mulch applicator |
CN204518440U (en) * | 2014-12-12 | 2015-08-05 | 郑州智联自动化设备有限公司 | A kind of Fertilizing film overlying machine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106427448A (en) * | 2016-11-21 | 2017-02-22 | 福建农林大学 | Sloping land film covering machine capable of adjusting drive wheels and working method thereof |
US11006587B2 (en) | 2018-08-29 | 2021-05-18 | DHG, Inc. | Material application system with vibrating sail plate |
CN109479447A (en) * | 2018-08-31 | 2019-03-19 | 禹州森茂迷迭香生物科技有限公司 | A kind of Cortex Eucommiae field adjustable-width fertilizer applicator |
CN111955329A (en) * | 2020-09-07 | 2020-11-20 | 王富英 | Accurate fertilizer injection unit |
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