CN112602575B - Agricultural irrigation car with adjustable operation range - Google Patents
Agricultural irrigation car with adjustable operation range Download PDFInfo
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- CN112602575B CN112602575B CN202110092416.0A CN202110092416A CN112602575B CN 112602575 B CN112602575 B CN 112602575B CN 202110092416 A CN202110092416 A CN 202110092416A CN 112602575 B CN112602575 B CN 112602575B
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- motor
- rotating shaft
- frame
- portal frame
- output shaft
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/09—Watering arrangements making use of movable installations on wheels or the like
- A01G25/092—Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
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Abstract
The invention discloses an agricultural irrigation vehicle with an adjustable operation range, which comprises a vehicle frame, wherein a mixing mechanism is arranged at the top of the vehicle frame, a water pump is arranged on the side surface of the mixing mechanism, a first portal frame is arranged at the top of the vehicle frame, a second motor is arranged at the top of the first portal frame, an output shaft of the second motor penetrates through the first portal frame and is connected with a supporting plate, a second portal frame is arranged at the top of the supporting plate, rotating shafts are rotatably connected to two sides of the second portal frame, and a second bevel gear is fixedly sleeved on the side surface of the rotating shaft. Compared with the prior art, the spray head has the advantages that the position of the spray head is adjusted, so that the working range of the spray head is improved, the use flexibility of the device is greatly improved, and the device is effectively prevented from being blocked by agglomerating the medicament by stirring and mixing the medicament, so that the use is very safe.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to an agricultural irrigation vehicle with an adjustable operation range.
Background
Irrigation is an indispensable part of agricultural production and is a technical measure for supplementing water required by crops. In order to ensure the normal growth of crops, obtain high and stable yield, the crops must be supplied with sufficient moisture. Under natural conditions, the water demand of crops cannot be met due to insufficient precipitation or uneven distribution. Therefore, irrigation must be performed artificially to compensate for the shortage of natural rainfall.
Along with development of science and technology and social progress, intelligent irrigation is widely used, and because intelligent irrigation needs to be provided with a large number of pipelines, the intelligent irrigation is not practical in low-density agricultural planting, so that an irrigation vehicle in traditional equipment is widely used in low-density agricultural planting, but the irrigation vehicle is insufficient, namely, the operation range is relatively fixed, the use flexibility is poor, and the defect exists.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an agricultural irrigation vehicle with an adjustable operation range.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an adjustable agricultural irrigation car of operation scope, includes the frame, compounding mechanism is installed at the top of frame, the water pump is installed to compounding mechanism's side-mounting, first portal frame is installed at the top of frame, first bevel gear is installed at the bottom of the output shaft of first portal frame, the output shaft of second motor runs through first portal frame and is connected with the backup pad, the second portal frame is installed at the top of backup pad, the both sides of second portal frame all rotate and are connected with the pivot, the fixed second bevel gear that has cup jointed of side of pivot, telescopic link mechanism is installed to the side-mounting of pivot, the mounting panel is installed to the side-mounting of telescopic link mechanism, install the shower nozzle on the mounting panel, the third motor is installed at the interior top of second portal frame, first bevel gear is installed to the bottom of the output shaft of third motor, the mount pad is installed at the top, the side-mounting of mount pad has the fifth motor, the output shaft of fifth motor inserts the inside of mount pad and is connected with the fixed axle, install the wind-up roll on the fixed axle, install on the roller.
Preferably, the mixing mechanism comprises a box body arranged at the top of the frame, a filter plate is arranged in the box body, a shell is arranged at the inner top of the box body, a first motor is arranged at the top of the box body, an output shaft of the first motor penetrates through the top of the box body and is inserted into the shell, a first rotating shaft is arranged at the bottom of the output shaft of the first motor, a first gear is fixedly sleeved on the first rotating shaft, the first rotating shaft penetrates through the shell and is rotationally connected with the filter plate, a second rotating shaft is arranged in the shell, a second gear is arranged in the second rotating shaft, the second rotating shaft penetrates through the shell and is rotationally connected with the filter plate, and a liquid inlet pipe and a feeding pipe are respectively arranged at the side face and the bottom of the box body.
Preferably, the first gear and the second gear are meshed for transmission, and stirring shafts are arranged on the first rotating shaft and the second rotating shaft.
Preferably, an annular groove is formed in the top of the first portal frame, an annular block is fixed to the bottom of the supporting plate, and the annular block is slidably connected with the annular groove.
Preferably, the first bevel gear and the second bevel gear are meshed for transmission, and two ends of the water delivery pipe are respectively communicated with the water pump and the spray head.
Preferably, the telescopic rod mechanism comprises a sleeve fixed on the side face of the rotating shaft, a fourth motor is installed at the bottom of the sleeve, an output shaft of the fourth motor is inserted into the sleeve and connected with a screw rod, the screw rod is connected with a first thread bush through threads, a movable rod is installed on the first thread bush, the movable rod is in sliding connection with the sleeve, and the movable rod is fixed with the mounting plate.
Preferably, one end of frame bottom is run through there is the second thread bush, the second thread bush has the threaded rod through threaded connection, the carousel is installed at the top of threaded rod, the fixing base is installed to the one end that the second thread bush was kept away from at the frame top, the gyro wheel is all installed at the both ends of fixing base, the link is installed to the side of frame.
Compared with the prior art, the invention has the beneficial effects that:
when the invention is used, the device is conveyed to a working place through the hook, then the turntable is rotated, the turntable drives the threaded rod to rotate, the threaded rod is downwards driven by threads of the second threaded sleeve, the threaded rod is downwards inserted into the ground to be supported, clear water is introduced through the liquid inlet pipe, the medicament is added through the liquid inlet pipe, then the first motor is started, the output shaft of the first motor drives the first rotating shaft to rotate, the first rotating shaft drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the second rotating shaft to rotate, the first rotating shaft and the second rotating shaft both drive the stirring shaft to rotate to uniformly mix the medicament and the clear water, the rotation directions of the two groups of stirring shafts are opposite, the problem that the medicament is not mixed from the ground can be effectively avoided, the second motor, the third motor and the fourth motor are started, and the output shaft of the second motor drives the supporting plate to rotate, the supporting plate adjusts the mounting plate through the second portal frame and the telescopic rod mechanism, the mounting plate drives the spray head, the output shaft of the third motor drives the first bevel gear, the first bevel gear drives the rotating shaft to rotate through meshed transmission with the second bevel gear, the rotating shaft drives the spray head through the telescopic rod mechanism and the mounting plate, the output shaft of the fourth motor drives the screw rod to rotate, the screw rod drives the movable rod through the first thread bush, the movable rod drives the spray head through the mounting plate, the fifth motor is started in the process, the output shaft of the fifth motor drives the fixed shaft to rotate, the fixed shaft drives the wind-up roller to rotate, the wind-up roller rotates to unwind the water pipe, the water pump is started after the adjustment, the water pump sprays water in the box body through the water pipe and the spray head to irrigate, the working range of the spray head is greatly improved through adjusting the spray head, the flexibility of use is very high;
in summary, compared with the prior art, the spray head provided by the invention has the advantages that the working range of the spray head is improved by adjusting the position of the spray head, the use flexibility of the device is greatly improved, and the device is effectively prevented from being blocked by agglomerating the medicament by stirring and mixing the medicament, so that the use is very safe.
Drawings
FIG. 1 is a schematic view of an agricultural irrigation vehicle with an adjustable operating range according to the present invention;
FIG. 2 is a schematic installation view of a mixing mechanism of an agricultural irrigation vehicle with an adjustable operation range;
FIG. 3 is an enlarged schematic view of part A of an agricultural irrigation vehicle with an adjustable operating range according to the present invention;
FIG. 4 is an enlarged schematic view of a portion B of an agricultural irrigation vehicle with an adjustable operating range according to the present invention;
FIG. 5 is a schematic view showing the installation of a water pipe of an agricultural irrigation vehicle with an adjustable operation range;
fig. 6 is a schematic installation view of a telescopic rod mechanism of an agricultural irrigation vehicle with an adjustable operation range.
In the figure: 1 frame, 2 compounding mechanism, 200 box, 201 filter plate, 202 casing, 203 first motor, 204 first pivot, 205 first gear, 206 second pivot, 207 second gear, 208 feed tube, 209 feed tube, 3 water pump, 4 first portal frame, 5 second motor, 6 backup pad, 7 second portal frame, 8 third motor, 9 first bevel gear, 10 pivot, 11 second bevel gear, 12 telescopic link mechanism, 1201 sleeve, 1202 fourth motor, 1203 lead screw, 1204 first screw thread cover, 1205 movable rod, 13 mounting panel, 14 shower nozzle, 15 mount pad, 16 fifth motor, 17 fixed axle, 18 wind-up roll, 19 raceway, 20 second screw thread cover, 21 threaded rod, 22 carousel, 23 link, 24 fixing base, 25 gyro wheel.
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.
Referring to fig. 1 to 6, an agricultural irrigation vehicle with an adjustable working range comprises a frame 1, a mixing mechanism 2 is installed at the top of the frame 1, a water pump 3 is installed on the side surface of the mixing mechanism 2, a first portal frame 4 is installed at the top of the frame 1, a second bevel gear 9 is installed at the top of the first portal frame 4, an output shaft of the second motor 5 penetrates through the first portal frame 4 and is connected with a supporting plate 6, a second portal frame 7 is installed at the top of the supporting plate 6, rotating shafts 10 are rotatably connected to two sides of the second portal frame 7, a second bevel gear 11 is fixedly sleeved on the side surface of the rotating shafts 10, a telescopic rod mechanism 12 is installed on the side surface of the rotating shafts 10, a mounting plate 13 is installed on the side surface of the telescopic rod mechanism 12, a spray head 14 is installed on the mounting plate 13, a third motor 8 is installed at the inner top of the second portal frame 7, a first bevel gear 9 is installed at the bottom of an output shaft of the third motor 8, a mounting seat 15 is installed at the top of the supporting plate 6, a fifth motor 16 is installed on the side surface of the mounting seat 15, an output shaft of the fifth motor 16 is inserted into the interior of the mounting seat 15 and is connected with a winding fixed shaft 17, and a winding fixed shaft 18 is installed on the winding fixed shaft 18.
As an embodiment, the mixing mechanism 2 comprises a box 200 mounted at the top of the frame 1, a filter plate 201 is mounted in the box 200, a housing 202 is mounted at the inner top of the box 200, a first motor 203 is mounted at the top of the box 200, an output shaft of the first motor 203 penetrates through the top of the box 200 and is inserted into the housing 202, a first rotating shaft 204 is mounted at the bottom of the output shaft of the first motor 203, a first gear 205 is fixedly sleeved on the first rotating shaft 204, the first rotating shaft 204 penetrates through the housing 202 and is rotationally connected with the filter plate 201, a second rotating shaft 206 is mounted in the housing 202, a second gear 207 is mounted on the second rotating shaft 206, the second rotating shaft 206 penetrates through the housing 202 and is rotationally connected with the filter plate 201, and a liquid inlet pipe 208 and a charging pipe 209 are mounted at the side and the bottom of the box 200 respectively.
As an embodiment, the first gear 205 and the second gear 207 are meshed for transmission, and stirring shafts are mounted on the first rotating shaft 204 and the second rotating shaft 206.
As an embodiment, an annular groove is formed in the top of the first portal frame 4, and an annular block is fixed to the bottom of the support plate 6 and is in sliding connection with the annular groove.
As an implementation mode, the first bevel gear 9 and the second bevel gear 11 are meshed for transmission, and two ends of the water delivery pipe 19 are respectively communicated with the water pump 3 and the spray head 14.
As an embodiment, the telescopic rod mechanism 12 includes a sleeve 1201 fixed on the side of the rotating shaft 10, a fourth motor 1202 is installed at the bottom of the sleeve 1201, an output shaft of the fourth motor 1202 is inserted into the sleeve 1201 and connected with a screw 1203, the screw 1203 is connected with a first thread bush 1204 through threads, a movable rod 1205 is installed on the first thread bush 1204, the movable rod 1205 is slidably connected with the sleeve 1201, and the movable rod 1205 is fixed with the mounting plate 13.
As an implementation mode, one end of the bottom of the frame 1 is penetrated with a second thread bush 20, the second thread bush 20 is connected with a threaded rod 21 through threads, a turntable 22 is installed at the top of the threaded rod 21, one end of the top of the frame 1 far away from the second thread bush 20 is provided with a fixed seat 24, both ends of the fixed seat 24 are provided with idler wheels 25, and the side surface of the frame 1 is provided with a hanging ring 23.
Working principle: when in use, the device is carried to a working place through the hook 23, then the rotary table 22 is rotated, the rotary table 22 drives the threaded rod 21 to rotate, the threaded rod 21 is downwards driven by threads of the second threaded sleeve 20, the threaded rod 21 is downwards inserted into the ground for supporting, clean water is introduced through the liquid inlet pipe 208, medicament is added through the charging pipe 209, then the first motor 203 is started, the output shaft of the first motor 203 drives the first rotating shaft 204 to rotate, the first rotating shaft 204 drives the first gear 205 to rotate, the first gear 205 drives the second gear 207 to rotate, the second gear 207 drives the second rotating shaft 206 to rotate, the first rotating shaft 204 and the second rotating shaft 206 both drive the stirring shafts to uniformly mix the medicament and the clean water, the rotation directions of the two groups of stirring shafts are opposite, the problem that the medicament is not mixed due to agglomeration can be effectively avoided, the second motor, the third motor 8 and the fourth motor 1202 are started, the output shaft of the second motor 5 drives the supporting plate 6 to rotate, the supporting plate 6 adjusts the mounting plate 13 through the second portal frame 7 and the telescopic rod mechanism 12, the mounting plate 13 drives the spray head 14 through the mounting plate 13, the output shaft of the third motor 8 drives the first bevel gear 9, the first bevel gear 9 drives the rotating shaft 10 to rotate through the meshing transmission with the second bevel gear 11, the rotating shaft 10 drives the spray head 14 through the telescopic rod mechanism 12 and the mounting plate 13, the output shaft of the fourth motor 1202 drives the screw rod 1203 to rotate, the screw rod 1203 drives the movable rod 1205 through the first thread bush 1204, the movable rod 1205 drives the spray head 14 through the mounting plate 13, the fifth motor 16 is started in the process, the output shaft of the fifth motor 16 drives the fixed shaft 17 to rotate, the fixed shaft 17 drives the wind-up roller 18 to rotate, the wind-up roller 18 rotates to unwind the water pipe 19, the water pump 3 is started after the adjustment is finished, the water pump 3 sprays water in the box body 200 through the water pipe 19 and the spray head 14 to irrigate, and the spray head 14 is adjusted, so that the working range of the spray head 14 is greatly improved, and the use flexibility is very high;
in summary, compared with the prior art, the invention improves the working range of the spray head 14 by adjusting the position of the spray head 14, greatly improves the flexibility of the device, and effectively avoids the blocking of the device due to the agglomeration of the medicament by stirring and mixing the medicament, thereby being very safe to use.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides an agricultural irrigation car with adjustable operation scope, includes frame (1), a serial communication port, compounding mechanism (2) are installed at the top of frame (1), water pump (3) are installed to the side-mounting of compounding mechanism (2), first portal frame (4) are installed at the top of frame (1), install second motor (5) at the top of first portal frame (4), the output shaft of second motor (5) runs through first portal frame (4) and is connected with backup pad (6), second portal frame (7) are installed at the top of backup pad (6), the both sides of second portal frame (7) are all rotated and are connected with pivot (10), second bevel gear (11) have been cup jointed to the side-mounting of pivot (10), telescopic link mechanism (12) are installed to the side-mounting of pivot (10), mounting panel (13) are last shower nozzle (14) installed, the interior top of second portal frame (7) has third motor (8), the bottom of third motor (8) is installed to the output shaft (8), install bevel gear (15) are installed at the bottom of fifth bevel gear (15), an output shaft of the fifth motor (16) is inserted into the mounting seat (15) and connected with a fixed shaft (17), a winding roller (18) is arranged on the fixed shaft (17), and a water delivery pipe (19) is arranged on the winding roller (18); the mixing mechanism (2) comprises a box body (200) arranged at the top of the frame (1), a filter plate (201) is arranged in the box body (200), a shell (206) is arranged at the inner top of the box body (200), a first motor (203) is arranged at the top of the box body (200), an output shaft of the first motor (203) penetrates through the top of the box body (200) and is inserted into the shell (202), a first rotating shaft (204) is arranged at the bottom of the output shaft of the first motor (203), a first gear (205) is fixedly sleeved on the first rotating shaft (204), the first rotating shaft (204) penetrates through the shell (202) and is in rotary connection with the filter plate (201), a second rotating shaft (206) is arranged in the shell (202), a second gear (207) is arranged on the second rotating shaft (206), the second rotating shaft (206) penetrates through the shell (202) and is in rotary connection with the filter plate (201), and a liquid inlet pipe (208) and a feeding pipe (209) are respectively arranged at the side face and the bottom of the box body (200). The first bevel gear (9) is meshed with the second bevel gear (11) for transmission, and two ends of the water delivery pipe (19) are respectively communicated with the water pump (3) and the spray head (14); the telescopic rod mechanism (12) comprises a sleeve (1201) fixed on the side face of the rotating shaft (10), a fourth motor (1202) is installed at the bottom of the sleeve (1201), an output shaft of the fourth motor (1202) is inserted into the sleeve (1201) and connected with a screw rod (1203), the screw rod (1203) is connected with a first thread bush (1204) through threads, a movable rod (1205) is installed on the first thread bush (1204), the movable rod (1205) is in sliding connection with the sleeve (1201), and the movable rod (1205) is fixed with the mounting plate (13).
2. An agricultural irrigation vehicle with an adjustable working range according to claim 1, wherein the first gear (205) and the second gear (207) are meshed for transmission, and stirring shafts are mounted on the first rotating shaft (204) and the second rotating shaft (206).
3. The agricultural irrigation vehicle with the adjustable operation range according to claim 1, wherein an annular groove is formed in the top of the first portal frame (4), and an annular block is fixed to the bottom of the supporting plate (6) and is in sliding connection with the annular groove.
4. The agricultural irrigation vehicle with the adjustable operation range according to claim 1, wherein one end of the bottom of the vehicle frame (1) is penetrated with a second thread bush (20), the second thread bush (20) is connected with a threaded rod (21) through threads, a rotary table (22) is installed at the top of the threaded rod (21), a fixed seat (24) is installed at one end of the top of the vehicle frame (1) far away from the second thread bush (20), rollers (25) are installed at two ends of the fixed seat (24), and a hanging ring (23) is installed on the side surface of the vehicle frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110092416.0A CN112602575B (en) | 2021-01-24 | 2021-01-24 | Agricultural irrigation car with adjustable operation range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110092416.0A CN112602575B (en) | 2021-01-24 | 2021-01-24 | Agricultural irrigation car with adjustable operation range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112602575A CN112602575A (en) | 2021-04-06 |
| CN112602575B true CN112602575B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110092416.0A Active CN112602575B (en) | 2021-01-24 | 2021-01-24 | Agricultural irrigation car with adjustable operation range |
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| Country | Link |
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| CN (1) | CN112602575B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210169A (en) * | 2021-05-06 | 2021-08-06 | 山东德建建筑科技股份有限公司 | Automatic paint spraying machine for vertical pipe |
| CN113875723A (en) * | 2021-10-26 | 2022-01-04 | 白冠淼 | Insect prevention medicament sprinkler of view leaf for pest control |
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|---|---|---|---|---|
| EP0228871A1 (en) * | 1985-12-19 | 1987-07-15 | Anthony Manufacturing Corporation | Rotary drive sprinkler |
| CN108094146A (en) * | 2017-12-23 | 2018-06-01 | 郑州搜趣信息技术有限公司 | A kind of adjustable rotary agricultural irrigation device of spraying range |
| CN208863155U (en) * | 2018-08-28 | 2019-05-17 | 天津康鑫园农业科技有限公司 | A kind of agricultural equipment irrigation rig |
| CN110226582A (en) * | 2019-07-12 | 2019-09-13 | 焦新建 | A kind of hydraulic engineering irrigation rig |
| CN211268017U (en) * | 2019-12-17 | 2020-08-18 | 沈阳宝华天润农业科技有限公司 | Agricultural irrigation device |
| CN212116548U (en) * | 2020-04-03 | 2020-12-11 | 程小宏 | Convenient to use's agricultural irrigation car |
-
2021
- 2021-01-24 CN CN202110092416.0A patent/CN112602575B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0228871A1 (en) * | 1985-12-19 | 1987-07-15 | Anthony Manufacturing Corporation | Rotary drive sprinkler |
| CN108094146A (en) * | 2017-12-23 | 2018-06-01 | 郑州搜趣信息技术有限公司 | A kind of adjustable rotary agricultural irrigation device of spraying range |
| CN208863155U (en) * | 2018-08-28 | 2019-05-17 | 天津康鑫园农业科技有限公司 | A kind of agricultural equipment irrigation rig |
| CN110226582A (en) * | 2019-07-12 | 2019-09-13 | 焦新建 | A kind of hydraulic engineering irrigation rig |
| CN211268017U (en) * | 2019-12-17 | 2020-08-18 | 沈阳宝华天润农业科技有限公司 | Agricultural irrigation device |
| CN212116548U (en) * | 2020-04-03 | 2020-12-11 | 程小宏 | Convenient to use's agricultural irrigation car |
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| CN112602575A (en) | 2021-04-06 |
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Effective date of registration: 20230703 Address after: Room 501, Unit 4, Building 1, No. 11, Wenhua North Road, Kaili City City, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Province, 556000 Applicant after: Guizhou Huanyu Jincheng Environmental Protection Technology Co.,Ltd. Address before: 556000 No.157 Jinshan Avenue, Kaili City, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Province Applicant before: Wang Zhongrong Applicant before: Yang Tonglian Applicant before: Shen Guifang Applicant before: Yan Chengwei |
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