Sun-shading device suitable for plastic greenhouse

Abstract

The sun-shading device comprises a support, a storage box, an automatic retracting mechanism, a stretching connecting mechanism and a screen cloth replacing mechanism, the automatic retracting mechanism comprises a rotating shaft, a sun-shading net, a connecting shaft, a spring piece, a ratchet wheel and a pawl, and the stretching connecting mechanism comprises a sun-shading net stretching mechanism and a quick connecting mechanism. The sunshade net stretching mechanism comprises a stretching motor, a stretching rod, a connecting belt, a connecting roller and a rolling wheel, the quick connecting mechanism comprises a connecting sleeve, a sliding rod, a butterfly nut and an extrusion block, and the net cloth replacing mechanism comprises a box cover, a connecting block, a fixing base and a locking rod. Under the cooperation of the support, the storage box, the automatic retracting mechanism, the stretching connecting mechanism and the screen cloth replacing mechanism, the whole sunshade net can be rapidly replaced and installed, the automatic stretching function of the sunshade net is achieved, and rapid and fixed connection between the sunshade net and a stretching structure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a sunshade device suitable for a plastic greenhouse. Background Art

[0002] In hot seasons, the temperature inside a plastic greenhouse can quickly rise to a level that is not conducive to crop growth. Shading can effectively lower the temperature inside the greenhouse. Not only that, by lowering the temperature inside the greenhouse, shading can also reduce the evaporation of water in the soil and crops, helping to maintain soil moisture and moisture in crops, which is especially important for arid areas.

[0003] In the past, plastic greenhouse shading devices often required manual operation to unfold or retract the shade net, which is particularly cumbersome in large farms or when the degree of shading needs to be adjusted frequently, increasing labor intensity. In addition, the shade net and mechanical components are exposed to the external environment for a long time and are easily affected by ultraviolet rays, wind and rain, causing material aging and damage, requiring regular maintenance and replacement, which increases costs.

[0004] Secondly, different shade nets need to be used in different seasons according to changes in light intensity, crop growth requirements, and natural damage. In this process, the replacement of traditional shade nets is extremely cumbersome and is a relatively time-consuming and labor-intensive project. Moreover, during the replacement process, they are always replaced on the surface of the greenhouse, which can easily damage the greenhouse.

[0005] After replacing the sunshade net, it needs to be stretched again. Frequent manual installation and disassembly, if the operation is improper, may cause damage to the sunshade net, such as tearing or pulling, thereby shortening its service life. The lack of a quick connection mechanism for the sunshade net means that more time and labor are required each time the sunshade net is installed or replaced. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a sunshade device suitable for a plastic greenhouse.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sunshade device suitable for a plastic greenhouse, comprising a bracket, a storage box, an automatic retraction mechanism, a stretching connection mechanism and a mesh replacement mechanism, the automatic retraction mechanism comprising a rotating shaft, a sunshade net, a connecting shaft, a spring sheet, a ratchet and a pawl, the rotating shaft is installed in the storage box and is detachably connected to the connecting shaft, one end of the sunshade net is fixedly installed on the rotating shaft, the connecting shaft is installed in the storage box and is rotatably connected to the storage box, the ratchet is fixedly installed on the connecting shaft, the pawl is installed in the storage box and is rotatably connected to the storage box, the stretching connection mechanism comprises a sunshade net stretching mechanism and a quick connection mechanism, the sunshade net stretching mechanism comprises a stretching motor, a stretching rod, a connecting belt, a connecting roller and a roller, the stretching motor is fixedly installed on one side of the bracket, the stretching rod is fixedly connected to one end of the stretching motor, the two ends of the connecting belt are respectively fixedly connected to the connecting roller and connected to the stretching rod, and the roller is installed at both ends of the connecting roller and slides inside the bracket.

[0008] Preferably, the quick connecting mechanism includes a connecting sleeve, a sliding rod, a butterfly nut and an extrusion block. The connecting sleeve is installed on the connecting roller and is rotationally connected to the connecting roller. The sliding rod is installed inside the extrusion block and is respectively slidably connected to the extrusion block and the connecting sleeve. The butterfly nut is installed on the sliding rod and is rotationally connected to the sliding rod. The extrusion block is installed inside the connecting sleeve and is slidably connected to the connecting sleeve, which is convenient for connecting and fixing one end of the sunshade net.

[0009] It is further preferred that the mesh replacement mechanism includes a box cover, a connecting block, a fixing seat and a locking rod, the box cover is detachably connected to the storage box, the connecting block is detachably connected to the storage box, and the fixing seat is rotatably connected to the locking rod to facilitate fixing the connection between the connecting shaft and the rotating shaft.

[0010] It is further preferred that a first slide groove is provided inside the connecting sleeve, a second slide groove is provided on the extrusion block, a short rod is provided on the slide rod, and the slide rod is slidingly connected to the connecting sleeve and the extrusion block respectively, the short rod slides inside the first slide groove, and the slide rod slides inside the extrusion block, so as to facilitate changes in the running trajectory of the short rod.

[0011] It is further preferred that a connecting spring and a positioning block are provided on the storage box, a retracting rod and a rotating rod are installed on the pawl, one end of the retracting rod is rotatably connected to the pawl, the rotating rod is installed at one end of the retracting rod and is rotatably connected to the retracting rod, the connecting spring is installed inside the positioning block and its two ends are respectively rotatably connected to the rotating rod and the storage box, so as to facilitate the pawl to stop the ratchet.

[0012] In a further preferred embodiment, a through hole is provided on the box cover, and the fixing seat is installed in the storage box through the through hole and is detachably connected to the storage box, so as to facilitate the operation of the mesh replacement mechanism.

[0013] It is further preferred that rollers are provided inside the storage box, and the rollers roll inside the storage box to protect the sunshade net when it is retracted.

[0014] It is further preferred that a slide rail is provided inside the bracket, and the roller and the connecting belt slide inside the slide rail to facilitate limiting the running track of the sunshade net.

[0015] Compared with the prior art, the utility model provides a sunshade device suitable for plastic greenhouses, which has the following beneficial effects:

[0016] The utility model provides an automatic retracting mechanism, and with the cooperation of the rotating shaft, the sunshade net, the connecting shaft, the spring sheet, the ratchet and the pawl, the device can realize the recovery of the sunshade net and the control and fixation of the sunshade net, and the recovered sunshade net can be placed in a storage box to protect the sunshade net, thereby reducing the replacement cost.

[0017] In the utility model, a sunshade net stretching mechanism and a quick connection mechanism are provided, and a stretching motor, a stretching rod, a connecting belt, a connecting roller and a roller, as well as a connecting sleeve, a sliding rod, a butterfly nut and an extrusion block cooperate with each other, so that the sunshade net can be quickly connected to the stretching tool after being replaced, so that it can be quickly put into use.

[0018] The utility model is provided with a mesh replacement mechanism, and with the cooperation of components such as a box cover, a connecting block, a fixing seat and a locking rod, the entire sunshade net can be replaced quickly and smoothly, ensuring convenient replacement and stable replacement of the entire sunshade net. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a sunshade device suitable for a plastic greenhouse in the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model from another angle;

[0021] Figure 3 This is a schematic diagram of the internal structure of the storage box in the utility model;

[0022] Figure 4 This is an exploded view of the internal structure of the storage box in the utility model;

[0023] Figure 5 for Figure 4 Partial view of center A;

[0024] Figure 6 This is a schematic diagram of the structure of the mesh replacement mechanism of the utility model;

[0025] Figure 7 This is a cross-sectional view of the bracket of the utility model;

[0026] Figure 8 This is an internal view of the connecting sleeve in the utility model.

[0027] In the figure: 1. bracket; 2. storage box; 3. rotating shaft; 4. sunshade net; 5. connecting shaft; 6. spring sheet; 7. ratchet; 8. pawl; 9. stretching motor; 10. stretching rod; 11. connecting belt; 12. connecting roller; 13. roller; 14. connecting sleeve; 15. slide rod; 16. butterfly nut; 17. extrusion block; 18. box cover; 19. connecting block; 20. fixing seat; 21. locking rod; 22. first slide slot; 23. second slide slot; 24. short rod; 25. connecting spring; 26. positioning block; 27. retracting rod; 28. rotating rod; 29. ​​through hole; 30. roller; 31. slide rail. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0029] See also Figure 1-8 A sunshade device suitable for a plastic greenhouse comprises a bracket 1, a storage box 2, an automatic retracting mechanism, a stretching connection mechanism and a mesh replacement mechanism, wherein the automatic retracting mechanism comprises a rotating shaft 3, a sunshade net 4, a connecting shaft 5, a spring sheet 6, a ratchet 7 and a pawl 8, wherein the rotating shaft 3 is installed in the storage box 2 and is detachably connected to the connecting shaft 5, one end of the sunshade net 4 is fixedly installed on the rotating shaft 3, the connecting shaft 5 is installed in the storage box 2 and is rotatably connected to the storage box 2, the ratchet 7 is fixedly installed on the connecting shaft 5, and the pawl 8 is installed In the storage box 2 and rotatably connected with the storage box 2, the stretching connection mechanism includes a sunshade net 4 stretching mechanism and a quick connection mechanism, the sunshade net 4 stretching mechanism includes a stretching motor 9, a stretching rod 10, a connecting belt 11, a connecting roller 12 and a roller 13, the stretching motor 9 is fixedly installed on one side of the bracket 1, the stretching rod 10 is fixedly connected to one end of the stretching motor 9, the two ends of the connecting belt 11 are respectively fixedly connected to the connecting roller 12 and the connecting belt 11, and the roller 13 is installed at both ends of the connecting roller 12 and slides inside the bracket 1.

[0030] In this embodiment, the automatic retraction mechanism includes a rotating shaft 3, a sunshade net 4, a connecting shaft 5, a spring sheet 6, a ratchet 7 and a pawl 8. During use, when one end of the sunshade net 4 is pulled by tension, the connecting shaft 5 drives the rotating shaft 3 to rotate, so that the spring sheet 6 begins to be compressed, and the ratchet 7 fixedly connected to the rotating shaft 3 is also rotating at this time, and the pawl 8 is fixedly connected to the ratchet 7, thereby fixing the rotating shaft 3, so that the stretched length of the sunshade net 4 is fixed. When the sunshade net 4 needs to be retracted, the rotating rod 28 is pulled up to drive the retracting rod 27 to pull up the pawl 8, and then the lifting rod is rotated and placed on the positioning block 26, thereby releasing the ratchet 7. When the sunshade net 4 is recovered to the desired length, the rotating rod 28 placed on the positioning block 26 is rotated, and under the action of the connecting spring 25, the retracting rod 27 pushes the pawl 8 to fix the ratchet 7 again, thereby recovering the sunshade net 4.

[0031] In this embodiment, the stretching connection mechanism includes a sunshade net 4 stretching mechanism and a quick connection mechanism. The sunshade net 4 stretching mechanism includes a stretching motor 9, a stretching rod 10, a connecting belt 11, a connecting roller 12 and a roller 13. The quick connection mechanism includes a connecting sleeve 14, a slide rod 15, a butterfly nut 16 and an extrusion block 17. When in use, the stretching motor 9 starts to drive, thereby driving the stretching rod 10 to rotate, and the connecting belt 11 sliding inside the slide rail is wound around the stretching rod 10, and the connecting roller 12 is driven by the roller 13 to slide inside the slide rail 31. The connecting sleeve 14 installed on the connecting roller 12 is fixedly connected to the sunshade net 4. When in use, the two sliding rods 15 are slid inside the connecting sleeve 14, and the short rod 24 on the sliding rod 15 slides inside the first sliding groove 22, and the sliding rod 15 slides inside the second sliding groove 23 on the extrusion block 17. At this time, the shape of the first sliding groove 22 and the position of the sliding rod 15 change accordingly, and the extrusion block 17 is pressed and slid to clamp the sunshade net 4. When the sunshade net 4 is fixed, the nut of the short rod 24 is tightened to fix the sliding rod 15, and the sunshade net 4 is also fixedly connected to the connecting sleeve 14.

[0032] In this embodiment, the mesh replacement mechanism includes a box cover 18, a connecting block 19, a fixing seat 20 and a locking rod 21. During use, when the sunshade net 4 needs to be replaced, the locking rod 21 is rotated and then stretched to pull the fixing seat 20 out of the through hole 29 on the box cover 18. At this time, the box cover 18 is removed from the storage box 2, and the connecting block 19 is taken out. At this time, the sunshade net 4 is taken out, and the connecting shaft 5 is pulled out from the rotating shaft 3, and then the sunshade net 4 is replaced. After the replacement is completed, the connecting shaft 5 is aligned with the rotating shaft 3 and placed inside the rotating shaft 3, and then the connecting block 19 is filled with the gap, and then one end of the sunshade net 4 is pulled out at the bottom end of the roller 30 and fixedly connected with the connecting sleeve 14, and then the box cover 18 is installed on the storage box 2, and the fixing block is inserted into the storage box 2 through the through hole 29, and then the locking rod 21 is rotated to fix it with the storage box 2 to cooperate with the operation of other mechanisms. Example

[0033] In summary, when in use, the stretching motor 9 starts to drive, thereby driving the stretching rod 10 to rotate, and the connecting belt 11 sliding inside the slide rail 31 is wound around the stretching rod 10, and the connecting roller 12 is driven by the roller 13 to slide inside the slide rail 31, and the connecting sleeve 14 installed on the connecting roller 12 is fixedly connected to the sunshade net 4. When in use, the two slide rods 15 slide inside the connecting sleeve 14, the short rod 24 on the slide rod 15 slides inside the first slide groove 22, and the slide rod 15 slides inside the second slide groove 23 on the extrusion block 17, and the first slide is then The shape of the groove 22 changes the position of the slide bar 15 accordingly, pressing the extrusion block 17 to slide, thereby clamping the sunshade net 4. When the sunshade net 4 is fixed, the nut of the short rod 24 is tightened to fix the slide bar 15, and the sunshade net 4 is also fixedly connected to the connecting sleeve 14. At this time, the sunshade net 4 begins to be pulled. When one end of the sunshade net 4 is pulled by tension, the connecting shaft 5 drives the rotating shaft 3 to rotate, so that the spring sheet 6 begins to be compressed, and the ratchet 7 fixedly connected to the rotating shaft 3 is also rotating at this time, and the pawl 8 is fixedly connected to the ratchet 7, thereby fixing the rotating shaft 3, thereby The stretched length of the sunshade net 4 is fixed. When the sunshade net 4 needs to be retracted, the rotating rod 28 is lifted to drive the retracting rod 27 to pull up the pawl 8, and then the retracting rod 27 is rotated and placed on the positioning block 26, thereby releasing the ratchet 7. When the sunshade net 4 is recovered to the required length, the rotating rod 28 placed on the positioning block 26 is rotated. Under the action of the connecting spring 25, the retracting rod 27 pushes the pawl 8 to fix the ratchet 7 again. When the sunshade net 4 cloth needs to be replaced, the locking rod 21 is rotated and then stretched to pull the fixing seat 20 out of the through hole 29 on the box cover 18. Remove the box cover 18 from the storage box 2, take out the connecting block 19, take out the sunshade net 4 at this time, and pull out the connecting shaft 5 from the rotating shaft 3, and then replace the sunshade net 4 cloth. After the replacement is completed, align the connecting shaft 5 with the rotating shaft 3 and put it into the rotating shaft 3, then fill the gap with the connecting block 19, then pull one end of the sunshade net 4 to the bottom of the roller 30 and fix it with the connecting sleeve 14, then install the box cover 18 on the storage box 2, and insert the fixing block into the storage box 2 through the through hole 29, then rotate the locking rod 21 to fix it with the storage box 2, and cooperate with the operation of other mechanisms.

[0034] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sunshade device suitable for a plastic greenhouse, comprising a bracket (1), a storage box (2), an automatic retracting mechanism, a stretching connection mechanism and a mesh replacement mechanism, characterized in that: The automatic retracting mechanism comprises a rotating shaft (3), a sunshade net (4), a connecting shaft (5), a spring sheet (6), a ratchet (7) and a pawl (8); the rotating shaft (3) is installed in the storage box (2) and is detachably connected to the connecting shaft (5); one end of the sunshade net (4) is fixedly installed on the rotating shaft (3); the connecting shaft (5) is installed in the storage box (2) and is rotatably connected to the storage box (2); the ratchet (7) is fixedly installed on the connecting shaft (5); the pawl (8) is installed in the storage box (2) and is rotatably connected to the storage box (2); the stretching connection The mechanism comprises a sunshade net (4) stretching mechanism and a quick connection mechanism, wherein the sunshade net (4) stretching mechanism comprises a stretching motor (9), a stretching rod (10), a connecting belt (11), a connecting roller (12) and a roller (13), wherein the stretching motor (9) is fixedly mounted on one side of a bracket (1), the stretching rod (10) is fixedly connected to one end of the stretching motor (9), the two ends of the connecting belt (11) are respectively fixedly connected to the connecting roller (12) and connected to the stretching rod (10), and the roller (13) is mounted on the two ends of the connecting roller (12) and slides inside the bracket (1).

2. A sunshade device suitable for a plastic greenhouse according to claim 1, characterized in that: The stretching connection mechanism comprises a connecting sleeve (14), a sliding rod (15), a butterfly nut (16) and an extrusion block (17); the connecting sleeve (14) is mounted on the connecting roller (12) and is rotatably connected to the connecting roller (12); the sliding rod (15) is mounted inside the extrusion block (17) and is slidably connected to the extrusion block (17) and the connecting sleeve (14) respectively; the butterfly nut (16) is mounted on the sliding rod (15) and is rotatably connected to the sliding rod (15); the extrusion block (17) is mounted inside the connecting sleeve (14) and is slidably connected to the connecting sleeve (14), so as to facilitate the connection and fixation of one end of the sunshade net (4).

3. A sunshade device suitable for a plastic greenhouse according to claim 1, characterized in that: The mesh replacement mechanism comprises a box cover (18), a connecting block (19), a fixing seat (20) and a locking rod (21); the box cover (18) is detachably connected to the storage box (2); the connecting block (19) is detachably connected to the storage box (2); and the fixing seat (20) is rotatably connected to the locking rod (21), so as to facilitate the connection between the fixing connecting shaft (5) and the rotating shaft (3).

4. A sunshade device suitable for a plastic greenhouse according to claim 2, characterized in that: The connecting sleeve (14) is provided with a first slide groove (22), the extrusion block (17) is provided with a second slide groove (23), the slide rod (15) is provided with a short rod (24), the slide rod (15) is slidably connected to the connecting sleeve (14) and the extrusion block (17), the short rod (24) slides in the first slide groove (22), and the slide rod (15) slides in the extrusion block (17), so as to change the running track of the short rod (24).

5. A sunshade device suitable for a plastic greenhouse according to claim 1, characterized in that: The storage box (2) is provided with a connecting spring (25) and a positioning block (26); the ratchet (8) is provided with a retracting rod (27) and a rotating rod (28); one end of the retracting rod (27) is rotatably connected to the ratchet (8); the rotating rod (28) is installed at one end of the retracting rod (27) and is rotatably connected to the retracting rod (27); the connecting spring (25) is installed inside the positioning block (26) and its two ends are rotatably connected to the rotating rod (28) and the storage box (2), respectively, so that the ratchet (8) can stop the ratchet wheel (7).

6. A sunshade device suitable for a plastic greenhouse according to claim 3, characterized in that: The box cover (18) is provided with a through hole (29), and the fixing seat (20) is installed in the storage box (2) through the through hole (29) and is detachably connected to the storage box (2).

7. A sunshade device suitable for a plastic greenhouse according to claim 5, characterized in that: A roller (30) is arranged inside the storage box (2), and the roller (30) rolls inside the storage box (2).

8. The sunshade device suitable for a plastic greenhouse according to claim 1, characterized in that: A slide rail (31) is arranged inside the bracket (1), and the roller (13) and the connecting belt (11) slide inside the slide rail (31).

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