Movable roof irrigation structure of vegetable greenhouse

Abstract

A movable roof irrigation structure of a vegetable greenhouse comprises a support, the support comprises vertical supporting rods and an arc top at the tops of the vertical supporting rods, a cross beam is arranged between the vertical supporting rods, two transverse rails are symmetrically arranged at the bottom of the cross beam, and irrigation mechanisms are arranged in the transverse rails; a rack is arranged on the bottom face of the transverse rail, rail grooves are formed in the two sides of the transverse rail, the irrigation mechanism is a U-shaped piece, two sets of idler wheels are arranged on the inner side of the top of the irrigation mechanism and located in the two rail grooves respectively, a gear is further arranged in the irrigation mechanism, the gear is located under the rack and meshed with the rack, and a rotary spray head is arranged at the bottom of the irrigation mechanism. By means of gear rack transmission and roller limiting design, high-precision stable movement of the irrigation mechanism is achieved, irrigation blind areas are reduced, dynamic water delivery and a rotary spray head structure are combined, spraying uniformity and the water resource utilization rate are improved, meanwhile, the environment interference resistance is high, and the intelligent irrigation requirements of greenhouses with different spans are met.

Description

Technical Field

[0001] This utility model relates to the field of agricultural facilities technology, specifically a mobile roof irrigation structure for vegetable greenhouses. Background Technology

[0002] In recent years, with the rapid development of facility agriculture, intelligent irrigation technology for vegetable greenhouses has received increasing attention. Traditional greenhouse irrigation mostly uses fixed sprinklers or manually moved sprinkler systems, which suffers from problems such as numerous irrigation blind spots and low water resource utilization. Especially for irrigation of the greenhouse roof area, existing technologies often use fixed sprinkler pipes arranged horizontally along the roof, with a fixed spray angle, making it difficult to achieve uniform coverage and unable to flexibly adjust the irrigation range according to the different growth needs of crops.

[0003] While existing mobile irrigation devices can partially solve the coverage problem, their structural design still has significant flaws. For example, some track-mounted mobile sprinkler systems use a simple sliding fit between pulleys and guide rails, which is prone to shifting and jamming due to frictional resistance during long-term operation. In other electrically driven systems, the transmission mechanism and irrigation pipeline lack coordinated design, and the water delivery hose is prone to tangling or stretching deformation during movement, affecting the stability of water supply. In addition, traditional sprinklers mostly use a unidirectional spray mode, resulting in poor atomization and difficulty in adapting to the irrigation needs of crops at different heights inside the greenhouse. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a mobile roof irrigation structure for vegetable greenhouses, which can effectively solve the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a mobile greenhouse roof irrigation structure, including a support frame, the support frame including vertical support rods and an arc top, a crossbeam between the vertical support rods, two transverse tracks symmetrically arranged at the bottom of the crossbeam, and an irrigation mechanism in the transverse tracks;

[0006] The bottom surface of the transverse track is provided with a rack, and track grooves are opened on both sides of the transverse track. The irrigation mechanism is a U-shaped part. Multiple sets of rollers are provided on the inner side of the top of the irrigation mechanism. The multiple sets of rollers are located in two track grooves respectively. The irrigation mechanism is also provided with a gear, which is located directly below the rack and meshes with the rack. A rotating nozzle is provided at the bottom of the irrigation mechanism.

[0007] In a preferred embodiment, a right-angle connector is fixed at the bottom of the irrigation mechanism, a rotating nozzle is movably mounted at the lower end of the right-angle connector, and a water delivery hose is connected to the upper interface of the right-angle connector.

[0008] In a preferred embodiment, the rotating nozzle is provided with a plurality of downwardly inclined and circumferentially distributed nozzles.

[0009] In a preferred embodiment, the top of the support frame is provided with a main water pipe that runs along the end of the greenhouse, and the water delivery hose passes through a through hole opened on the crossbeam and is connected to the main water pipe.

[0010] In a preferred embodiment, the irrigation mechanism includes multiple sets of rollers, with one side comprising two sets of rollers, one upper and one lower, which respectively contact the top and bottom surfaces of the track groove.

[0011] In a preferred embodiment, the gear is fixed by a fixed shaft, one end of which extends out of one side of the irrigation mechanism and is connected to the drive motor via a shaft.

[0012] In a preferred embodiment, a groove is provided on the top surface of the crossbeam, a slider is provided in the groove, a support rod is fixed on the slider, and the water supply hose passes through the sleeve at the end of the support rod.

[0013] In a preferred embodiment, a guide rod is provided in the groove, the guide rod passes through the slider, and a spring is sleeved on the outer wall of the guide rod;

[0014] The spring is mounted on the guide rod on the side of the slider near the through hole.

[0015] The mobile roof irrigation structure for vegetable greenhouses provided by this utility model has the following beneficial effects by adopting the above structure:

[0016] (1) By meshing the transverse track with the gear rack, and combined with the limiting clamping of the track groove by the upper and lower rollers on both sides of the irrigation mechanism, the irrigation mechanism can move smoothly and with high precision along the roof, effectively avoiding the jamming problem caused by friction offset of the traditional slide rail structure, significantly reducing the irrigation blind area, and improving the water uniformity of the roof area.

[0017] (2) The water delivery hose is connected to the sleeve through the spring buffer slider in the groove. When the irrigation mechanism moves, the bending arc and extension length of the hose are automatically adjusted to reduce the stress concentration and bending fatigue caused by repeated stretching of the hose, ensure the continuous and stable water flow, and extend the service life of the pipeline.

[0018] (3) The rotating nozzle, combined with the circumferentially distributed inclined nozzle design, forms a rotating diffusion water curtain during the spraying process. This can not only expand the coverage of single-point spraying, but also drive the nozzle to rotate through the reaction force of water flow, adapting to the height requirements of different crops and improving water resource utilization. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the bracket of this utility model.

[0021] Figure 2-3 This is a schematic diagram of the irrigation mechanism structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the end-view cross-sectional structure of the irrigation mechanism of this utility model.

[0023] Figure 5 This is a top view of the rotating nozzle structure of this utility model.

[0024] Figure 6 This is a schematic diagram of the support structure of this utility model.

[0025] In the diagram: 1. Support bracket; 2. Arched top; 3. Crossbeam; 4. Horizontal track; 5. Irrigation mechanism; 6. Main water pipe; 7. Track groove; 8. Rack; 9. Gear; 10. Roller; 11. Rotary nozzle; 12. Nozzle; 13. Through hole; 14. Water delivery hose; 15. Slide rail; 16. Spring; 17. Slider; 18. Support rod; 19. Drive motor; 20. Right angle connector; 21. Detailed Implementation

[0026] like Figure 1-6 In the present invention, a mobile roof irrigation structure for a vegetable greenhouse includes a support 1, wherein the support 1 includes vertical support rods and an arc top 2 at its top, a crossbeam 3 is provided between the vertical support rods, and two transverse tracks 4 are symmetrically provided at the bottom of the crossbeam 3, and an irrigation mechanism 5 is provided in the transverse tracks 4.

[0027] The bottom surface of the transverse track 4 is provided with a rack 8, and the transverse track 4 is provided with track grooves 7 on both sides. The irrigation mechanism 5 is a U-shaped part. Multiple sets of rollers 10 are provided on the inner side of the top of the irrigation mechanism 5. The multiple sets of rollers 10 are respectively located in two track grooves 7. The irrigation mechanism 5 is also provided with a gear 9, which is located directly below the rack 8 and meshes with the rack 8. The bottom of the irrigation mechanism 5 is provided with a rotating nozzle 11.

[0028] In a preferred embodiment, the irrigation mechanism 5 has a right-angle connector 21 fixed at its bottom, a rotating nozzle 11 is movably disposed at the lower end of the right-angle connector 21, and a water delivery hose 14 is connected to the upper interface of the right-angle connector 21.

[0029] In a preferred embodiment, the rotating nozzle 11 is provided with a plurality of downwardly inclined and circumferentially distributed nozzles 12.

[0030] In a preferred embodiment, the top of the support 1 is provided with a main water pipe 6 arranged along the end of the greenhouse, and the water delivery hose 14 passes through the through hole 13 opened on the crossbeam 3 and is connected to the main water pipe 6.

[0031] In a preferred embodiment, the irrigation mechanism 5 includes multiple sets of rollers 10, one side of which includes two sets of rollers 10, one upper and one lower, which respectively contact the top and bottom surfaces of the track groove 7.

[0032] In a preferred embodiment, the gear 9 is fixed by a fixed shaft, one end of which extends out of the irrigation mechanism 5 and is shaft-connected to the drive motor 20.

[0033] In a preferred embodiment, the top surface of the crossbeam 3 is provided with a groove 15, a slider 18 is provided in the groove 15, a support rod 19 is fixed on the slider 18, and the water supply hose 14 is provided through the sleeve at the end of the support rod 19.

[0034] In a preferred embodiment, a guide rod 16 is provided in the slide groove 15, the guide rod 16 passes through the slider 18, and a spring 17 is sleeved on the outer wall of the guide rod 16;

[0035] The spring 17 is mounted on the guide rod 16 on the side of the slider 18 near the through hole 13.

[0036] In the above scheme, two transverse rails 4 made of C-shaped steel are symmetrically fixed to the bottom of the crossbeam 3 of the support 1. The openings of the rail grooves 7 face both sides, and the rack 8 is fixed to the bottom surface of the rails 4. The irrigation mechanism 5 adopts a U-shaped aluminum alloy frame, with four sets of rollers 10 symmetrically installed on the inner side of its top (one set on each side, one on the top and one on the bottom). The upper roller contacts the top surface of the rail groove 7, and the lower roller contacts the bottom surface of the rail groove 7, forming upper and lower limits. The gear 9 is installed in the middle of the irrigation mechanism 5 through bearings. The gear 9 meshes with the rack 8, and one end of the gear shaft is connected to a 24V DC geared motor (drive motor 20). A right-angle connector 21 is welded to the bottom of the irrigation mechanism 5. The lower end of the connector is connected to a rotating nozzle 11 through a thread, and the upper end is connected to a PE water supply hose 14 with an inner diameter of 12mm through a quick-connect interface. The rotating nozzle 11 has six nozzles 12 evenly distributed around its circumference at an angle of 45°, with a nozzle orifice diameter of 1.5mm.

[0037] The main water pipe 6, a DN40 PVC pipe, is fixed at the highest point of the arched roof 2 at the end of the greenhouse. A diversion valve is installed at every 2 meters along its bottom. The water delivery hose 14 extends from the diversion valve of the main water pipe 6, passes through a 15mm diameter through-hole 13 on the crossbeam 3, and extends along the support rod 19 in the chute 15 to the irrigation mechanism 5. The chute 15 is a T-shaped groove milled from the top surface of the crossbeam 3. At least one guide rod 16 is installed in the chute, and a slider 18 is fitted onto the guide rod 16. The slider 18 is welded and fixed to the support rod 19. A compression spring 17 is fitted onto the end of the guide rod 16 near the through-hole 13. When the irrigation mechanism 5 moves, the slider 18 is compressed and slides along the guide rod 16. The compression of the spring 17 is adaptively adjusted according to the moving distance to prevent excessive bending of the water delivery hose 14.

[0038] The working principle of the mobile roof irrigation structure for vegetable greenhouses disclosed in this invention is as follows:

[0039] After the drive motor 20 is started, the gear 9 rotates along the rack 8, driving the irrigation mechanism 5 to move on the transverse track 4 at a speed of 0.3 m / s. Simultaneously, the main water pipe 6 valve is opened, and water flows through the water delivery hose 14 to the rotating nozzle 11. The reaction force of the water jet from the nozzle 12 drives the nozzle 11 to rotate at 30 r / min, forming a ring-shaped spraying area with a diameter of 4-5 m. When the irrigation mechanism 5 moves to the end of the track, the drive motor 20 rotates in the opposite direction, achieving reciprocating irrigation.

Claims

1. A mobile roof irrigation structure for a vegetable greenhouse, comprising a support frame (1), wherein the support frame (1) includes vertical supports and an arc-shaped top (2) thereon, and a crossbeam (3) is provided between the vertical supports, characterized in that: The bottom of the crossbeam (3) is symmetrically provided with two transverse tracks (4), and an irrigation mechanism (5) is provided in the transverse tracks (4); The bottom surface of the transverse track (4) is provided with a rack (8), and the transverse track (4) is provided with track grooves (7) on both sides. The irrigation mechanism (5) is a U-shaped part. The top inner side of the irrigation mechanism (5) is provided with multiple sets of rollers (10). The multiple sets of rollers (10) are located in two track grooves (7) respectively. The irrigation mechanism (5) is also provided with a gear (9). The gear (9) is located directly below the rack (8) and meshes with the rack (8). The bottom of the irrigation mechanism (5) is provided with a rotating nozzle (11).

2. The mobile roof irrigation structure for a vegetable greenhouse according to claim 1, characterized in that: The irrigation mechanism (5) has a right-angle connector (21) fixed at the bottom, and a rotating nozzle (11) is movably installed at the lower end of the right-angle connector (21). A water delivery hose (14) is connected to the upper end of the right-angle connector (21).

3. The mobile roof irrigation structure for a vegetable greenhouse according to claim 1, characterized in that: The rotating nozzle (11) is provided with multiple downward-sloping and circumferentially distributed nozzles (12).

4. The mobile roof irrigation structure for a vegetable greenhouse according to claim 2, characterized in that: The top of the support (1) is provided with a main water pipe (6) arranged along the end of the greenhouse. The water delivery hose (14) passes through the through hole (13) opened on the crossbeam (3) and is connected to the main water pipe (6).

5. The mobile roof irrigation structure for a vegetable greenhouse according to claim 1, characterized in that: Among the multiple sets of rollers (10) in the irrigation mechanism (5), one side includes two sets of rollers (10) on the top and bottom, respectively, and the two sets of rollers (10) contact the top and bottom surfaces of the track groove (7).

6. The mobile roof irrigation structure for a vegetable greenhouse according to claim 1, characterized in that: The gear (9) is fixed by a fixed shaft, one end of which extends out of the irrigation mechanism (5) and is connected to the drive motor (20) by a shaft.

7. The mobile roof irrigation structure for a vegetable greenhouse according to claim 1, characterized in that: The top surface of the crossbeam (3) is provided with a groove (15), a slider (18) is provided in the groove (15), a support rod (19) is fixed on the slider (18), and the water supply hose (14) is provided through the sleeve at the end of the support rod (19).

8. The mobile roof irrigation structure for a vegetable greenhouse according to claim 7, characterized in that: The slide groove (15) is provided with a guide rod (16), which passes through the slider (18). A spring (17) is sleeved on the outer wall of the guide rod (16). The spring (17) is mounted on the guide rod (16) on the side of the slider (18) near the through hole (13).

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