CN111837754B - Arched shed air discharging device for agricultural planting and use method thereof - Google Patents
Arched shed air discharging device for agricultural planting and use method thereof Download PDFInfo
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- CN111837754B CN111837754B CN202010676776.0A CN202010676776A CN111837754B CN 111837754 B CN111837754 B CN 111837754B CN 202010676776 A CN202010676776 A CN 202010676776A CN 111837754 B CN111837754 B CN 111837754B
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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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
- A01G9/242—Arrangement of opening or closing systems for windows and ventilation panels for greenhouses with flexible coverings
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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
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention relates to an arched shed ventilation device for agricultural planting, which comprises an arched shed main body, wherein the arched shed main body comprises a plurality of arc-shaped supporting beams which are arranged in parallel, and plastic cloth covers the arc-shaped supporting beams; the plastic cloth at the head end of the arched shed main body can be partially unfolded to form a head end ventilation opening, the plastic cloth at the tail end of the arched shed main body can be partially unfolded to form a tail end ventilation opening, and the plastic cloth at the two sides of the arched shed main body can be unfolded at intervals to form side ventilation openings. The side winding rollers, the head end winding rollers and the tail end winding rollers are simultaneously matched through reasonable structural configuration connection of the gear motor, the first gear commutator and the second gear commutator and the square tubes, and the special winding fixing mode of the first side ventilation pull rope, the second side ventilation pull rope, the head end ventilation pull rope and the tail end ventilation pull rope is combined to realize that the head end ventilation opening, the tail end ventilation opening and a plurality of side ventilation openings on two sides are simultaneously opened and closed through one gear motor. On one hand, the equipment purchasing cost is saved, and on the other hand, the labor and the time are saved.
Description
Technical Field
The invention relates to the technical field of agricultural planting, in particular to an arched shed air release device for agricultural planting and a using method thereof.
Background
The arched shed is generally built by bamboo poles and cement columns, the service life is as long as 3-10 years, the top part of the arched shed is arc-shaped, and a plastic film is covered on the arched shed. Also called two sheds, bread sheds and cold sheds. The arched shed is suitable for planting and breeding sheds in south China and in spring, summer and autumn in north China, has slightly lower heat preservation performance compared with a warm shed, and can be additionally provided with two or three films so as to increase the temperature at night.
The plastic cloth at two ends and two sides of the arched shed needs to be opened according to the requirement of vegetables in the arched shed on temperature to ventilate in the using process of the arched shed, the plastic cloth at two ends and two sides is manually opened in a conventional mode, the labor intensity of manual ventilation is high, and the working efficiency is low.
Among the existing structure, mechanical ventilation unit has also appeared, this kind of ventilation unit mainly used encircles canopy both sides and ventilates, need respectively set up one set in the both sides of encircleing the canopy, and every set of ventilation unit all drives the axle of coiling through the motor and rotates, and wherein the plastic sheeting winding of encircleing canopy one side is fixed on the axle of coiling, and the axle of coiling rotates to coil the epaxial coiling axle of plastic sheeting winding simultaneously and the motor upwards climbs along the pole setting to make both sides plastic sheeting open and realize the ventilation. The mechanical ventilation device still has many defects in the using process: firstly, two sides of the arched shed need to be respectively provided with one set, so that the equipment purchasing cost is high, and a plurality of farmers cannot receive high equipment purchasing cost; secondly, the plastic cloth is wound by rotating the winding shaft, the plastic cloth on two sides is completely opened, and the structure can not meet the use requirement for some vegetables requiring ventilation on two sides at intervals; and the plastic cloth at the two ends of the arched shed can not be opened in linkage with the plastic cloth at the two sides, and the arched shed needs to be additionally opened manually, thus being labor-consuming and time-consuming.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an arched shed air release device for agricultural planting and a using method thereof.
The invention provides an arched shed ventilation device for agricultural planting, which comprises an arched shed main body, wherein the arched shed main body comprises a plurality of arc-shaped supporting beams which are arranged in parallel, and plastic cloth covers the arc-shaped supporting beams; the arc-shaped supporting beams are connected through connecting rods, the lower part of the arc-shaped supporting beam at the head end is supported through a first upright post, and the lower part of the arc-shaped supporting beam at the tail end is supported through a second upright post; the plastic cloth of arched shed main part head end can be opened partially and form the head end vent, and the plastic cloth of arched shed main part tail end can be opened partially and form the tail end vent, and the plastic cloth of arched shed main part both sides all can be opened at the interval and form side vent, its characterized in that: the head end of the arched shed body is provided with a first supporting column fixed with the ground, the tail end of the arched shed body is provided with a second supporting column fixed with the ground, and the first supporting column and the second supporting column are both higher than the arched shed body; the speed reducing motor is fixedly arranged on the first support column, an output shaft of the speed reducing motor is connected with the first gear commutator, and the first gear commutator is fixedly arranged on the first support column; the first gear reverser comprises a first transverse input shaft, a first transverse output shaft and a first longitudinal output shaft, the output shaft of the speed reducing motor is fixedly connected with the first transverse input shaft, the first transverse output shaft is fixedly connected with the first connecting rod, and the first longitudinal output shaft is fixedly connected with the head-end winding roller; the first end winding roller is wound with and fixed with a first end ventilation pull rope, and the other end of the first end ventilation pull rope bypasses from the lower part of the first end ventilation opening and is fixed on the first upright post;
the second connecting rod penetrates through the second supporting column and is connected with the second supporting column through a bearing, a second gear direction changer is fixedly connected to the second supporting column, the second gear direction changer comprises a second transverse input shaft and a second longitudinal output shaft, one end of the second connecting rod is fixedly connected with the second transverse input shaft, and the second longitudinal output shaft is fixedly connected with the tail end winding roller; the tail end winding roller is wound and fixed with a tail end ventilation pull rope, and the other end of the tail end ventilation pull rope bypasses from the lower part of the tail end ventilation opening and is fixed on the second upright post;
the square tube is detachably connected between the first connecting rod and the second connecting rod, a plurality of side winding rollers are sleeved on the square tube, and each side winding roller can axially slide along the square tube and does not rotate in the circumferential direction; each side winding roller comprises a first winding area and a second winding area, a first side ventilation pull rope is wound and fixed on the first winding area, a second side ventilation pull rope is wound and fixed on the second winding area, the winding directions of the first side ventilation pull rope and the second side ventilation pull rope are opposite, and the other end of the first side ventilation pull rope bypasses and is fixed on the arc-shaped supporting beam from the lower part of a side ventilation opening on one side of the arched shed main body; the other end of the second side ventilation pull rope passes by and is fixed on the arc-shaped support beam from the lower part of the side ventilation opening at the other side of the arched shed body.
Preferably, the center of the side winding roller is provided with a square inner hole matched with the square pipe, the square pipe penetrates through the square inner hole, and the matching of the square inner hole and the square pipe enables the side winding roller to slide along the axial direction of the square pipe and not to rotate in the circumferential direction. When the square tube rotates, the side winding roller can rotate along with the square tube to perform winding. The side winding roller can be flexibly adjusted along the sliding position of the square pipe, and the position can be flexibly changed according to the opening position of the side ventilation opening.
Preferably, slots are arranged at two ends of the square pipe, and the first connecting rod and the second connecting rod are correspondingly inserted into the two slots respectively.
Preferably, a fastening bolt for fixing the first link and the second link is screwed to the square pipe. First connecting rod, second connecting rod and square pipe are pegged graft the back rethread fastening bolt and are fixed, and square pipe can be dismantled as required to this kind of connected form, carries out the change maintenance of side winding roller.
Preferably, the balancing weights are fixed on the head end ventilation opening, the tail end ventilation opening and the side ventilation openings. The counterweight block enables the plastic cloth to fall back better after being lifted.
The invention provides a use method of an arch shed air release device for agricultural planting, which comprises the following steps:
firstly, starting a speed reducing motor, driving a plurality of side winding rollers to synchronously rotate by a square tube, winding a first side ventilation pull rope on a first winding area, winding a second side ventilation pull rope on a second winding area, and respectively pulling side vents on two sides by the first side ventilation pull rope and the second side ventilation pull rope to realize simultaneous opening of the plurality of side vents on two sides; meanwhile, the head end winding roller rotates to wind the head end ventilation pull rope on the head end winding roller, the tail end winding roller rotates to wind the tail end ventilation pull rope on the tail end winding roller, the head end ventilation pull rope pulls the head end ventilation opening to open the head end ventilation opening, and the tail end ventilation pull rope pulls the tail end ventilation opening to open the tail end ventilation opening;
closing the speed reducing motor when the head end ventilation opening, the tail end ventilation opening and the side ventilation opening are opened to proper opening degrees;
when the vent needs to be closed, the speed reduction motor is controlled to rotate reversely, the first side ventilation pull rope, the second side ventilation pull rope, the head end ventilation pull rope and the tail end ventilation pull rope are all released, and the head end vent, the tail end vent and the side vent all fall back and are closed under the action of gravity of the balancing weight.
The invention has the beneficial effects that:
1. the side winding rollers, the head end winding rollers and the tail end winding rollers are simultaneously matched through reasonable structural configuration connection of the gear motor, the first gear commutator and the second gear commutator and the square tubes, and the special winding fixing mode of the first side ventilation pull rope, the second side ventilation pull rope, the head end ventilation pull rope and the tail end ventilation pull rope is combined to realize that the head end ventilation opening, the tail end ventilation opening and a plurality of side ventilation openings on two sides are simultaneously opened and closed through one gear motor. On one hand, the equipment purchasing cost is saved, and on the other hand, the labor and the time are saved.
2. The ventilation of both sides of the arched shed main body at intervals is realized, the ventilation is not completely opened, and the planting requirements of some vegetables needing the ventilation of both sides at intervals are met.
3. When the square tube rotates, the side winding roller can rotate along with the square tube to perform winding. The side winding roller can be flexibly adjusted along the sliding position of the square pipe, and the position can be flexibly changed according to the opening position of the side ventilation opening.
4. First connecting rod, second connecting rod and square pipe are pegged graft the back rethread fastening bolt and are fixed, and square pipe can be dismantled as required to this kind of connected form, carries out the change maintenance of side winding roller.
Drawings
FIG. 1 is a schematic top view of the present invention.
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
shown in the figure:
1. an arc-shaped supporting beam, 2, a connecting rod, 3, a first upright column, 4, a second upright column, 5, plastic cloth, 6, a head end ventilation opening, 7, a tail end ventilation opening, 8, a side ventilation opening, 9, a balancing weight, 10, a first supporting column, 11, a second supporting column, 12, a speed reduction motor, 13, a first transverse input shaft, 14, a first transverse output shaft, 15, a first longitudinal output shaft, 16, a head end winding roller, 17, a head end ventilation pull rope, 18, a first connecting rod, 19, a square pipe, 20, a first winding area, 21, a second winding area, 22, a second side ventilation pull rope, 23, a first side ventilation pull rope, 24, a fastening bolt, 25, a second connecting rod, 26, a second transverse input shaft, 27, a second longitudinal output shaft, 28, a tail end winding roller, 29 and a tail end ventilation pull rope.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
An arch shed ventilation device for agricultural planting, as shown in figures 1-3, comprises an arch shed main body, wherein the arch shed main body comprises a plurality of arc-shaped supporting beams 1 which are arranged in parallel, and plastic cloth 5 covers the arc-shaped supporting beams 1. A plurality of arc supporting beam 1 are connected through connecting rod 2, and the arc supporting beam's that is located the head end below supports through first stand 3, and the arc supporting beam's that is located the tail end below supports through second stand 4.
The plastic cloth 5 at the head end of the arched shed main body can be partially unfolded to form a head end ventilation opening 6, and the plastic cloth 5 at the tail end of the arched shed main body can be partially unfolded to form a tail end ventilation opening 7. The plastic cloth 5 on both sides of the arched shed main body can be opened at intervals to form side ventilation openings 8.
The head end of the arched shed main body is provided with a first supporting column 10 fixed with the ground, the tail end of the arched shed main body is provided with a second supporting column 11 fixed with the ground, and the first supporting column 10 and the second supporting column 11 are both higher than the arched shed main body. The speed reducing motor 12 is fixedly mounted on the first support column 10, an output shaft of the speed reducing motor 12 is connected with a first gear commutator, and the first gear commutator is fixedly mounted on the first support column 10. The first gear reverser comprises a first transverse input shaft 13, a first transverse output shaft 14 and a first longitudinal output shaft 15, an output shaft of the speed reducing motor 12 is fixedly connected with the first transverse input shaft 13, the first transverse output shaft 14 is fixedly connected with a first connecting rod 18, and the first longitudinal output shaft 15 is fixedly connected with a head-end winding roller 16. The head end winding roller 16 is wound with and fixed to a head end ventilation stay 17, and the other end of the head end ventilation stay 17 is wound around and fixed to the first column 3 from below the head end ventilation opening 6.
The second connecting rod 25 passes through the second supporting column 11 and is connected with the second supporting column 11 through a bearing, and a second gear direction changer is fixedly connected to the second supporting column 11 and comprises a second transverse input shaft 26 and a second longitudinal output shaft 27, wherein one end of the second connecting rod 25 is fixedly connected with the second transverse input shaft 26, and the second longitudinal output shaft 27 is fixedly connected with the tail winding roller 28. The tail end winding roller 28 is wound with and fixed to a tail end ventilation cord 29, and the other end of the tail end ventilation cord 29 is wound around and fixed to the second pillar 4 from below the tail end ventilation opening 7.
Can dismantle between first connecting rod 18 and second connecting rod 25 and connect square pipe 19, establish a plurality of side wire winding rollers on square pipe 19, every side wire winding roller all can be followed square pipe 19 axial slip and not rotate in circumference. Each side winding roller comprises a first winding area 20 and a second winding area 21, a first side ventilation pull rope 23 is wound and fixed on the first winding area 20, a second side ventilation pull rope 22 is wound and fixed on the second winding area 21, the winding directions of the first side ventilation pull rope 23 and the second side ventilation pull rope 22 are opposite, and the other end of the first side ventilation pull rope 23 is wound and fixed on the arc-shaped support beam 1 from the lower part of the side ventilation opening 8 at one side of the arched shed main body. The other end of the second side ventilation stay 22 is passed under the side ventilation opening 8 on the other side of the arched main body and fixed to the arched support beam 1.
In this embodiment, the center of the side winding roller is provided with a square inner hole matched with the square tube 19, the square tube 19 penetrates through the square inner hole, and the matching of the square inner hole and the square tube 19 enables the side winding roller to axially slide along the square tube 19 and not to rotate in the circumferential direction. The side winding roller may be rotated to perform winding when the square pipe 19 is rotated. The side winding roller can slide along the square pipe 19, the position can be flexibly adjusted, and the position can be flexibly changed according to the opening position of the side ventilation opening 8.
In this embodiment, slots are provided at both ends of the square tube 19, and the first connecting rod 18 and the second connecting rod 25 are respectively inserted into the two slots. Further, a fastening bolt 24 for fixing the first link 18 and the second link 25 is screwed to the square pipe 19. The first connecting rod 18, the second connecting rod 25 and the square tube 19 are fixed through the fastening bolts after being spliced, and the square tube 19 can be detached according to needs in the connection mode, so that the side winding roller can be replaced and maintained.
In the present embodiment, in order to make the plastic cloth 5 fall back better after being lifted, the balancing weights 9 are fixed to the head end ventilation opening 6, the tail end ventilation opening 7 and the side ventilation openings 8.
A use method of an arch shed air release device for agricultural planting comprises the following steps:
firstly, starting a speed reducing motor 12, driving a plurality of side winding rollers to synchronously rotate by a square pipe 19, winding a first side ventilation pull rope 23 on a first winding area 20, winding a second side ventilation pull rope 22 on a second winding area 21, and respectively pulling side ventilation openings 8 on two sides by the first side ventilation pull rope 23 and the second side ventilation pull rope 22 so as to realize simultaneous opening of the plurality of side ventilation openings 8 on two sides; meanwhile, the head end winding roller 16 rotates to wind the head end ventilation pull rope 17 on the head end winding roller 16, the tail end winding roller 28 rotates to wind the tail end ventilation pull rope 29 on the tail end winding roller 28, the head end ventilation pull rope 17 pulls the head end ventilation opening 6 to open the head end ventilation opening 6, and the tail end ventilation pull rope 29 pulls the tail end ventilation opening 7 to open the tail end ventilation opening 7;
closing the speed reducing motor 12 when the head end ventilation opening 6, the tail end ventilation opening 7 and the side ventilation opening 8 are opened to proper opening degrees;
and thirdly, when the vent needs to be closed, the speed reduction motor 12 is controlled to rotate reversely, the first side ventilation stay cord 23, the second side ventilation stay cord 22, the head end ventilation stay cord 17 and the tail end ventilation stay cord 29 are all released, and the head end vent 6, the tail end vent 7 and the side vent 8 all fall back and are closed under the action of gravity of the balancing weight 9.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (6)
1. An arched shed ventilation device for agricultural planting comprises an arched shed main body, wherein the arched shed main body comprises a plurality of arc-shaped supporting beams which are arranged in parallel, and plastic cloth covers the arc-shaped supporting beams; the arc-shaped supporting beams are connected through connecting rods, the lower part of the arc-shaped supporting beam at the head end is supported through a first upright post, and the lower part of the arc-shaped supporting beam at the tail end is supported through a second upright post; the plastic cloth of arched shed main part head end can be opened partially and form the head end vent, and the plastic cloth of arched shed main part tail end can be opened partially and form the tail end vent, and the plastic cloth of arched shed main part both sides all can be opened at the interval and form side vent, its characterized in that: the head end of the arched shed body is provided with a first supporting column fixed with the ground, the tail end of the arched shed body is provided with a second supporting column fixed with the ground, and the first supporting column and the second supporting column are both higher than the arched shed body; the speed reducing motor is fixedly arranged on the first support column, an output shaft of the speed reducing motor is connected with the first gear commutator, and the first gear commutator is fixedly arranged on the first support column; the first gear reverser comprises a first transverse input shaft, a first transverse output shaft and a first longitudinal output shaft, the output shaft of the speed reducing motor is fixedly connected with the first transverse input shaft, the first transverse output shaft is fixedly connected with the first connecting rod, and the first longitudinal output shaft is fixedly connected with the head-end winding roller; the first end winding roller is wound with and fixed with a first end ventilation pull rope, and the other end of the first end ventilation pull rope bypasses from the lower part of the first end ventilation opening and is fixed on the first upright post;
the second connecting rod penetrates through the second supporting column and is connected with the second supporting column through a bearing, a second gear direction changer is fixedly connected to the second supporting column, the second gear direction changer comprises a second transverse input shaft and a second longitudinal output shaft, one end of the second connecting rod is fixedly connected with the second transverse input shaft, and the second longitudinal output shaft is fixedly connected with the tail end winding roller; the tail end winding roller is wound and fixed with a tail end ventilation pull rope, and the other end of the tail end ventilation pull rope bypasses from the lower part of the tail end ventilation opening and is fixed on the second upright post;
the square tube is detachably connected between the first connecting rod and the second connecting rod, a plurality of side winding rollers are sleeved on the square tube, and each side winding roller can axially slide along the square tube and does not rotate in the circumferential direction; each side winding roller comprises a first winding area and a second winding area, a first side ventilation pull rope is wound and fixed on the first winding area, a second side ventilation pull rope is wound and fixed on the second winding area, the winding directions of the first side ventilation pull rope and the second side ventilation pull rope are opposite, and the other end of the first side ventilation pull rope bypasses and is fixed on the arc-shaped supporting beam from the lower part of a side ventilation opening on one side of the arched shed main body; the other end of the second side ventilation pull rope passes by and is fixed on the arc-shaped support beam from the lower part of the side ventilation opening at the other side of the arched shed body.
2. The arched shed ventilation device for agricultural planting according to claim 1, wherein: the center of side winding roller is equipped with the square hole with square pipe complex, and square pipe runs through square hole.
3. The arched shed ventilation device for agricultural planting according to claim 1, wherein: the two ends of the square pipe are provided with slots, and the first connecting rod and the second connecting rod are correspondingly inserted into the two slots respectively.
4. The arched shed ventilation device for agricultural planting according to claim 3, wherein: and the square pipe is in threaded connection with a fastening bolt for fixing the first connecting rod and the second connecting rod.
5. The arched shed ventilation device for agricultural planting according to claim 1, wherein: balancing weights are fixed on the head end vent, the tail end vent and the side vent.
6. Use of the wind discharging device according to any of claims 1-5, characterized in that it comprises the following steps:
firstly, starting a speed reducing motor, driving a plurality of side winding rollers to synchronously rotate by a square tube, winding a first side ventilation pull rope on a first winding area, winding a second side ventilation pull rope on a second winding area, and respectively pulling side vents on two sides by the first side ventilation pull rope and the second side ventilation pull rope to realize simultaneous opening of the plurality of side vents on two sides; meanwhile, the head end winding roller rotates to wind the head end ventilation pull rope on the head end winding roller, the tail end winding roller rotates to wind the tail end ventilation pull rope on the tail end winding roller, the head end ventilation pull rope pulls the head end ventilation opening to open the head end ventilation opening, and the tail end ventilation pull rope pulls the tail end ventilation opening to open the tail end ventilation opening;
closing the speed reducing motor when the head end ventilation opening, the tail end ventilation opening and the side ventilation opening are opened to proper opening degrees;
when the vent needs to be closed, the speed reduction motor is controlled to rotate reversely, the first side ventilation pull rope, the second side ventilation pull rope, the head end ventilation pull rope and the tail end ventilation pull rope are all released, and the head end vent, the tail end vent and the side vent all fall back and are closed under the action of gravity of the balancing weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010676776.0A CN111837754B (en) | 2020-07-14 | 2020-07-14 | Arched shed air discharging device for agricultural planting and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010676776.0A CN111837754B (en) | 2020-07-14 | 2020-07-14 | Arched shed air discharging device for agricultural planting and use method thereof |
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| CN111837754B true CN111837754B (en) | 2021-10-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112470803A (en) * | 2020-12-05 | 2021-03-12 | 济南市第二农业科学研究院(济南市现代农业科技成果综合应用示范基地) | Two-film covering and retracting device in ginger planting arched shed and using method thereof |
| CN114747404B (en) * | 2022-02-28 | 2023-04-11 | 高玉民 | Grape planting arch shed ventilation and heat dissipation device and using method thereof |
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| Publication number | Publication date |
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| CN111837754A (en) | 2020-10-30 |
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