CN111727891B - Cleaning system for cleaning dung of cowshed - Google Patents
Cleaning system for cleaning dung of cowshed Download PDFInfo
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- CN111727891B CN111727891B CN202010674137.0A CN202010674137A CN111727891B CN 111727891 B CN111727891 B CN 111727891B CN 202010674137 A CN202010674137 A CN 202010674137A CN 111727891 B CN111727891 B CN 111727891B
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- cleaning
- fixedly connected
- scraper blade
- cleaning scraper
- lifting
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- 238000004140 cleaning Methods 0.000 title claims abstract description 166
- 210000003608 fece Anatomy 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 239000010871 livestock manure Substances 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/01—Removal of dung or urine, e.g. from stables
- A01K1/0132—Removal of dung or urine, e.g. from stables by means of scrapers or the like moving to-and-fro or step-by-step
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/01—Removal of dung or urine, e.g. from stables
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Cleaning In General (AREA)
- Housing For Livestock And Birds (AREA)
Abstract
The invention discloses a cleaning system for cleaning dung of a cowshed, which comprises a moving block, wherein the moving block comprises a lifting groove, a lifting spring and a lifting rod, a cleaning mechanism is arranged below the lifting rod and comprises a first cleaning scraper blade and a second cleaning scraper blade which are movably connected in sequence, the rotary drum is movably connected in the extending groove, the outer side of the rotary drum is engaged and connected with a rack plate, one end of the rack plate close to the outlet of the extending groove is fixedly connected with a plurality of cleaning brushes I, when the first cleaning scraper blade or the second cleaning scraper blade meets the obstruction of the bulge, the cleaning scraper blade rises and bypasses the bulge, the damage to the cleaning mechanism and the whole device is avoided, when the first cleaning scraper blade or the second cleaning scraper blade bypasses the bulge, the first cleaning brush stretches out and cleans the bulge, so that the feces cleaning quality is improved, the use is convenient, and the popularization is very worth.
Description
Technical Field
The invention relates to the technical field of pasture cleaning equipment, in particular to a cleaning system for cleaning dung of a cowshed.
Background
At present, a traditional cowshed dung cleaning system is generally characterized in that a steel wire rope with the same length as a dung channel is wound on a single-wheel roller of a driving box, the single-wheel roller rotates forwards and backwards to retract the steel wire rope, one scraping arm device is driven to scrape dung forwards, the other scraping arm device retreats, and the dung cleaning work is completed through alternate work. But scrape the arm device motion through the wire rope pulling and can make wire rope elongated, the wire rope diameter attenuation, there is the danger of being pulled apart, need regularly cut and change, and the ox house is subaerial to be difficult to exempt from to have unevenness's place, current scrape the arm device and can receive the hindrance when passing through protruding ground, scrape the arm device and can cause the damage to scraping the arm device through protruding ground by force, and increase driving motor's load, and the dirty clean system of current ox house excrement is difficult to clear up the excrement of ox house edge, form the clearance blind spot, the excrement exists for a long time and can lead to the fact healthy harm to the ox, cause the easy illness of ox, the risk of breeding has been increased.
Among the prior art, application number "201520440551. X" scrape excrement device, including drive arrangement, controlling means and cleaning device, cleaning device includes the spout guide rail, at the inside spout that removes of spout guide rail and with spout swing joint's scraper blade, reversing mechanism card on the scraper blade is in the spacing downthehole of spout when the spout gos forward, make scraper blade and spout move together, reversing mechanism is tripped when the spout returns, reversing mechanism gets into next spacing downthehole, thereby realize that the marching type of scraper blade gos forward, avoided cutting and changing of wire rope, guarantee the even running of equipment.
However, the prior art still has more problems, such as: the scraper blade can receive the hindrance when protruding ground, and the scraper blade is forced to pass through protruding ground and can cause the damage to the scraper blade to increase driving motor's load, and the scraper blade is difficult to clear up the excrement of cowshed corner and dirty, forms the clearance blind spot.
Disclosure of Invention
The present invention is directed to a cleaning system for cleaning dung in a cowshed, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a cleaning system for cleaning dung of a cowshed comprises a moving block, wherein a plurality of lifting grooves are formed in the lower portion of the moving block, lifting springs are fixedly connected inside the lifting grooves, a lifting rod is fixedly connected to one end, away from the bottom surface of each lifting groove, of each lifting spring, and a cleaning mechanism is arranged below each lifting rod;
the cleaning mechanism comprises a first cleaning scraper blade and a second cleaning scraper blade which are movably connected in sequence, the first cleaning scraper blade and the second cleaning scraper blade are fixedly connected below the lifting rod, sliding blocks are fixedly connected to two sides of the first cleaning scraper blade and two sides of the second cleaning scraper blade, and a sliding channel groove matched with the sliding blocks is formed in each of the first cleaning scraper blade and the second cleaning scraper blade;
the improved structure of the sliding block is characterized in that a through groove is connected to the lower portion of the sliding channel groove, an extending groove is connected to the lower portion of the through groove, a rotary drum is movably connected to the middle of the extending groove, a rack plate is connected to the outer side of the rotary drum in a meshed mode, one end, close to an outlet of the extending groove, of the rack plate is fixedly connected with a plurality of first cleaning brushes, a first threaded screw rod is fixedly connected to the lower portion of the sliding block, and one end, far away from the sliding block, of the first threaded screw rod movably penetrates through the through groove and extends into the rotary drum.
Preferably, the inner side wall of the rotary drum is provided with a thread channel matched with the thread screw rod, the outer side wall of the rotary drum is fixedly connected with gear teeth matched with the rack plate, and the diameter of the rotary drum is larger than that of the through groove.
Preferably, a plurality of second cleaning brushes are fixedly connected below the first cleaning scraper and the second cleaning scraper.
Preferably, the two ends of the side wall of the motion block are symmetrically and fixedly connected with telescopic cylinders, the opening of each telescopic cylinder is far away from the center of the motion block, telescopic springs are fixedly connected inside the telescopic cylinders and are close to one end fixedly connected with extension rods of the openings of the telescopic cylinders, the extension rods extend out of the other end fixedly connected with cleaning scraper blades III of the openings of the telescopic cylinders, and the cleaning scraper blades III are fixedly connected with a plurality of cleaning brushes III.
Preferably, the upper part of the motion block is provided with a plurality of threaded through holes, a threaded screw rod II movably penetrates through the threaded through holes, and the threaded screw rod II is powered by a driving motor.
Compared with the prior art, the invention has the beneficial effects that:
1. the cleaning scraper blade I and the cleaning scraper blade II of the device are connected with each other in a matched mode through the sliding block and the sliding channel groove and are connected into a whole to clean the cowshed excrement channel, the cleaning scraper blade I and the cleaning scraper blade II can freely move up and down, and can ascend and bypass the bulge when the cleaning scraper blade I or the cleaning scraper blade II is blocked, so that the cleaning scraper blade I, the cleaning scraper blade II and the whole device are prevented from being harmed;
2. when the cleaning scraper I or the cleaning scraper II rises, the cleaning brush II extends out and cleans the surfaces of the protrusions through the cooperation of the threaded screw I, the rotary drum and the rack plate, so that the cleaning efficiency and the cleaning quality of excrement are improved;
3. a third cleaning scraper of the device butts against the side wall of the cowshed dung channel under the action of a telescopic spring and an extension rod, and the third cleaning scraper cleans the corners of the side wall and the bottom wall of the cowshed dung channel, so that the problem that the corners of the cowshed dung channel are difficult to clean is solved;
4. this device uses the two take place steel wire ropes of screw lead screw, through the screw lead screw two and the cooperation between the screw through-hole on the motion piece for the motion piece drives clean mechanism and carries out the cleaning work on the cowshed excrement way, has avoided inconvenience and the potential risk that uses steel wire rope to bring.
The cleaning system for cleaning the cowshed dung channel can realize that the cleaning scraper blade I or the cleaning scraper blade II rises to bypass the bulge when being obstructed by the bulge, so that the damage to the cleaning mechanism and the whole device is avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the motion block and cleaning mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of section A in FIG. 2;
FIG. 4 is a schematic cross-sectional view of section B of FIG. 2;
FIG. 5 is a schematic cross-sectional view of section C of FIG. 2;
FIG. 6 is an enlarged view of the structure of region F in FIG. 3;
FIG. 7 is a schematic view showing a structure of a cleaning blade of the present invention;
FIG. 8 is a schematic structural view of a second cleaning blade of the present invention;
FIG. 9 is a schematic view of a combination of a first cleaning blade and a second cleaning blade according to the present invention;
FIG. 10 is a front view of a combination of a first cleaning blade and a second cleaning blade of the present invention;
FIG. 11 is a cross-sectional view of section D of FIG. 10;
FIG. 12 is a schematic cross-sectional view of section E of FIG. 10;
fig. 13 is a schematic view of the operation of the cleaning mechanism of the present invention.
In the figure: 1 moving block, 11 lifting grooves, 12 lifting springs, 13 lifting rods, 14 threaded through holes, 2 cleaning mechanisms, 21 cleaning blades I, 22 cleaning blades II, 23 sliding blocks, 24 sliding channel grooves, 25 through grooves, 26 extending grooves, 27 rotating cylinders, 28 rack plates, 29 cleaning brushes I, 210 threaded screw rods I, 211 cleaning brushes II, 3 telescopic cylinders, 31 telescopic springs, 32 extending rods, 33 cleaning blades III, 34 cleaning brushes III, 4 threaded screw rods II, 5 cowshed dung channels and 6 protrusions.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-13, the present invention provides a technical solution:
a cleaning system for cleaning dung in a cowshed comprises a moving block 1, wherein the moving block 1 drives a cleaning mechanism 2 to move, a plurality of lifting grooves 11 are formed in the lower portion of the moving block 1, lifting springs 12 are fixedly connected inside the lifting grooves 11, lifting rods 13 are fixedly connected to one ends, far away from the bottom surfaces of the lifting grooves 11, of the lifting springs 12, the cleaning mechanism 2 is arranged below the lifting rods 13, when the cleaning scraper blades 21 or the cleaning scraper blades 22 are blocked by protrusions 6, the cleaning scraper blades 21 or the cleaning scraper blades 22 upwards extrude the lifting rods 13, the lifting rods 13 extrude the lifting springs 12 and compress the lifting springs 12, after the cleaning scraper blades 21 or the cleaning scraper blades 22 pass through the protrusions 6, the cleaning scraper blades 21 or the cleaning scraper blades 22 downwards move under the action of the lifting springs 12, and the cleaning scraper blades 21 or the cleaning scraper blades 22 continuously clean the dung in a cowshed dung channel 5;
the cleaning mechanism 2 comprises a first cleaning scraper 21 and a second cleaning scraper 22 which are movably connected in sequence, the first cleaning scraper 21 and the second cleaning scraper 22 are fixedly connected below the lifting rod 13, sliding blocks 23 are fixedly connected to two sides of the first cleaning scraper 21 and the second cleaning scraper 22, the first cleaning scraper 21 and the second cleaning scraper 22 are respectively provided with a sliding channel groove 24 matched with the sliding blocks 23, and the sliding blocks 23 are inserted into the sliding channel grooves 24, so that the first cleaning scraper 21 and the second cleaning scraper 22 are connected into a whole, and the first cleaning scraper 21 or the second cleaning scraper 22 can freely move up and down;
the lower portion of the sliding channel groove 24 is connected with a through groove 25, the lower portion of the through groove 25 is connected with an extending groove 26, a rotary drum 27 is movably connected in the extending groove 26, a rack plate 28 is connected to the outer side of the rotary drum 27 in a meshed mode, the rotary drum 27 rotates to drive the rack plate 28 to move, one end, close to an outlet of the extending groove 26, of the rack plate 28 is fixedly connected with a plurality of first cleaning brushes 29, the rack plate 28 moves to drive the first cleaning brushes 29 to extend out of the extending groove 26, a first threaded screw rod 210 is fixedly connected to the lower portion of the sliding block 23, one end, far away from the sliding block 23, of the first threaded screw rod 210 movably penetrates through the through groove 25 and extends into the rotary drum 27, and the first threaded screw rod 210 moves to drive the rotary disc 27 to rotate.
Specifically, a thread passage matched with the first threaded screw 210 is arranged on the inner side wall of the rotary drum 27, gear teeth matched with the rack plate 28 are fixedly connected to the outer side wall of the rotary drum 27, and the diameter of the rotary drum 27 is larger than that of the through groove 25, so that when the rotary drum 27 moves relative to the first threaded screw 210, the rotary drum 27 rotates under the thread matching.
Specifically, a plurality of second cleaning brushes 211 are fixedly connected below the first cleaning scraper 21 and the second cleaning scraper 22, and the second cleaning brushes 211 are used for cleaning small gaps which are difficult to contact with the first cleaning scraper 21 and the second cleaning scraper 22, so that feces can be cleaned more thoroughly.
Concretely, 1 lateral wall both ends symmetry fixedly connected with telescopic tube 3 of motion piece, and 1 center of motion piece is kept away from to 3 openings of telescopic tube, 3 inside fixedly connected with expanding spring 31 of telescopic tube, the one end fixedly connected with extension bar 32 of 3 diapalls of telescopic tube is kept away from to expanding spring 31, extension bar 32 stretches out 3 open-ended one end fixedly connected with cleaning blade three 33 of telescopic tube, cleaning blade three 33 supports cowshed excrement way 5 lateral wall under expanding spring 31 and extension bar 32 effect, cleaning blade three 33 clears up cowshed excrement way 5's lateral wall and diapire edge, a plurality of cleaning brush three 34 of fixedly connected with on the cleaning blade three 33, cleaning brush three 34 is used for clearing up the tiny gap that cleaning blade three 33 is difficult to contact, make the dirty clearance of excrement more thorough.
Specifically, a plurality of threaded through holes 14 are formed in the upper portion of the moving block 1, a threaded screw rod II 4 penetrates through the threaded through holes 14 in a movable mode, the threaded screw rod II 4 rotates to drive the moving block 1 to move, power is provided for the threaded screw rod II 4 through a driving motor, and the driving motor improves the operation automation of the whole device.
The working principle is as follows: the driving motor drives the threaded screw rod II 4 to rotate, the bolt screw rod II 4 drives the moving block 1 to rotate, the moving block 1 drives the cleaning mechanism 2 to clean dung on the cowshed dung channel 5, when the cleaning scraper I21 or the cleaning scraper II 22 meets the bulge 6, the cleaning scraper I21 or the cleaning scraper II 22 ascends under the matching of the sliding block 23 and the sliding channel groove 24, the sliding block 23 ascends to drive the threaded screw rod I210 to ascend, the threaded screw rod I210 moves to drive the rotating cylinder 27 to rotate, the rotating cylinder 27 rotates to drive the rack plate 28 to move, the rack plate 28 drives the cleaning brush I29 to move towards the direction close to the outlet of the stretching groove 26, the cleaning brush I29 stretches out of the stretching groove 26, the cleaning brush I29 cleans the dung on the surface of the bulge 6, when the cleaning scraper I21 or the cleaning scraper II 22 passes through the bulge 6, the cleaning scraper I21 or the cleaning scraper II 22 moves downwards under the action of the lifting spring 12, the first cleaning brush 29 retracts into the extending groove 26, and the first cleaning scraper 21 or the second cleaning scraper 22 continues to clean the dung on the cowshed dung channel 5.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A clean system for clearing up cowshed excrement, includes motion block (1), its characterized in that: a plurality of lifting grooves (11) are formed in the lower portion of the moving block (1), lifting springs (12) are fixedly connected inside the lifting grooves (11), a lifting rod (13) is fixedly connected to one end, far away from the bottom surfaces of the lifting grooves (11), of each lifting spring (12), and a cleaning mechanism (2) is arranged below each lifting rod (13);
the cleaning mechanism (2) comprises a first cleaning scraper blade (21) and a second cleaning scraper blade (22) which are movably connected in sequence, the first cleaning scraper blade (21) and the second cleaning scraper blade (22) are fixedly connected below the lifting rod (13), sliding blocks (23) are fixedly connected to two sides of the first cleaning scraper blade (21) and the second cleaning scraper blade (22), and sliding channel grooves (24) matched with the sliding blocks (23) are formed in the first cleaning scraper blade (21) and the second cleaning scraper blade (22);
the improved cleaning brush is characterized in that a through groove (25) is connected below the slide channel groove (24), an extending groove (26) is connected below the through groove (25), a rotary drum (27) is movably connected in the extending groove (26), a rack plate (28) is meshed and connected to the outer side of the rotary drum (27), a plurality of cleaning brushes I (29) are fixedly connected to one end, close to an outlet of the extending groove (26), of the rack plate (28), a threaded screw rod I (210) is fixedly connected to the lower portion of the sliding block (23), and one end, far away from the sliding block (23), of the threaded screw rod I (210) movably penetrates through the through groove (25) and extends into the rotary drum (27).
2. A cleaning system for cleaning manure from a cowshed according to claim 1, characterized in that: the inner side wall of the rotary drum (27) is provided with a thread channel matched with the first thread screw rod (210), the outer side wall of the rotary drum (27) is fixedly connected with gear teeth matched with the rack plate (28), and the diameter of the rotary drum (27) is larger than that of the through groove (25).
3. A cleaning system for cleaning manure from a cowshed according to claim 1, characterized in that: a plurality of second cleaning brushes (211) are fixedly connected below the first cleaning scraper (21) and the second cleaning scraper (22).
4. A cleaning system for cleaning manure from a cowshed according to claim 1, characterized in that: motion piece (1) lateral wall both ends symmetry fixedly connected with telescopic tube (3), and telescopic tube (3) opening keeps away from motion piece (1) center, telescopic tube (3) inside fixedly connected with expanding spring (31), expanding spring (31) are close to telescopic tube (3) open-ended one end fixedly connected with extension bar (32), extension bar (32) stretch out telescopic tube (3) open-ended one end fixedly connected with cleaning scraper blade three (33), three (34) of a plurality of cleaning brush of fixedly connected with on the cleaning scraper blade three (33).
5. A cleaning system for cleaning manure from a cowshed according to claim 1, characterized in that: the upper part of the motion block (1) is provided with a plurality of threaded through holes (14), a threaded screw rod II (4) movably penetrates through the threaded through holes (14), and the threaded screw rod II (4) is powered by a driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010674137.0A CN111727891B (en) | 2020-07-14 | 2020-07-14 | Cleaning system for cleaning dung of cowshed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010674137.0A CN111727891B (en) | 2020-07-14 | 2020-07-14 | Cleaning system for cleaning dung of cowshed |
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| Publication Number | Publication Date |
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| CN111727891A CN111727891A (en) | 2020-10-02 |
| CN111727891B true CN111727891B (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010674137.0A Active CN111727891B (en) | 2020-07-14 | 2020-07-14 | Cleaning system for cleaning dung of cowshed |
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| CN (1) | CN111727891B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5742968A (en) * | 1993-04-07 | 1998-04-28 | Nicholson Farm Machinery Company Limited | Apparatus for removing debris from the ground |
| CN104365489A (en) * | 2014-10-31 | 2015-02-25 | 竹溪县塔二湾种猪扩繁场 | Feces clearing tool used for sow production bed |
| CN107372138A (en) * | 2017-07-19 | 2017-11-24 | 安徽徽宝农林科技有限公司 | A kind of livestock-raising slurry scraper |
| CN107711531A (en) * | 2017-11-06 | 2018-02-23 | 华南农业大学 | One kind sweeps formula pig farm automatic manure-cleaning car and cleaning up excrement method |
| CN207022838U (en) * | 2017-06-23 | 2018-02-23 | 青川县荣茂牧业有限责任公司 | A kind of pigsty cleaning plant |
| CN108323440A (en) * | 2018-02-28 | 2018-07-27 | 农业部环境保护科研监测所 | A kind of pasture scratch board feces cleaning system |
| CN207969517U (en) * | 2018-03-19 | 2018-10-16 | 中国农业科学院兰州畜牧与兽药研究所 | A kind of cleaning device for cattle and sheep farm |
| CN210746582U (en) * | 2019-04-24 | 2020-06-16 | 杨金珠 | Automatic cleaning device of pig house for poultry |
-
2020
- 2020-07-14 CN CN202010674137.0A patent/CN111727891B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5742968A (en) * | 1993-04-07 | 1998-04-28 | Nicholson Farm Machinery Company Limited | Apparatus for removing debris from the ground |
| CN104365489A (en) * | 2014-10-31 | 2015-02-25 | 竹溪县塔二湾种猪扩繁场 | Feces clearing tool used for sow production bed |
| CN207022838U (en) * | 2017-06-23 | 2018-02-23 | 青川县荣茂牧业有限责任公司 | A kind of pigsty cleaning plant |
| CN107372138A (en) * | 2017-07-19 | 2017-11-24 | 安徽徽宝农林科技有限公司 | A kind of livestock-raising slurry scraper |
| CN107711531A (en) * | 2017-11-06 | 2018-02-23 | 华南农业大学 | One kind sweeps formula pig farm automatic manure-cleaning car and cleaning up excrement method |
| CN108323440A (en) * | 2018-02-28 | 2018-07-27 | 农业部环境保护科研监测所 | A kind of pasture scratch board feces cleaning system |
| CN207969517U (en) * | 2018-03-19 | 2018-10-16 | 中国农业科学院兰州畜牧与兽药研究所 | A kind of cleaning device for cattle and sheep farm |
| CN210746582U (en) * | 2019-04-24 | 2020-06-16 | 杨金珠 | Automatic cleaning device of pig house for poultry |
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| CN111727891A (en) | 2020-10-02 |
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