Automatic sunshade net for greenhouse

Abstract

The utility model provides a kind of automatic sunshade net of greenhouse, its structure is, by front support, rear support and the inclined strut of several connecting between front support and rear support are composed of the net rack body of low in front and high in rear;Sleeve joint has sliding sleeve on inclined strut, and the upper part of mesh is formed by the sliding bar assembly of fixed connection on sliding sleeve;The inner side of front support is provided with fixed rod assembly, and the lower part of mesh is formed by the fixed rod assembly;The outer side of front support is provided with the horizontal shaft rod driven by motor, and one end of pull rope is wound on horizontal shaft rod, and the other end of pull rope is fixed after winding through the pulley separately arranged on front support and rear support on sliding bar assembly.The utility model provides a kind of automatic sunshade net of greenhouse with the advantages that the wind resistance of sunshade net can be enhanced, the connection of sunshade net and device is avoided to be subjected to violent pulling, and sunshade net is conveniently disassembled.

Description

Technical Field

[0001] This utility model relates to a shade net, and more particularly to an automatic shade net for greenhouses. Background Technology

[0002] Shading nets are an important piece of equipment in greenhouse cultivation. They are a new type of agricultural protective covering material that has been promoted for more than 10 years. Their main function is to effectively prevent direct sunlight during the high temperatures of summer, so as to avoid plants being scorched by sunlight and affecting their growth and development.

[0003] Traditional greenhouse shade nets still have some shortcomings in installation: Most shade nets on the market are made by fixing a set of brackets on the top of the greenhouse and a set of brackets on each side of the greenhouse. Then, a motor is used to drive the winding rod to rotate, so that the ropes on it are wound around and the shade net is pulled up. However, fixing the bottom and top of the shade net is usually cumbersome and inconvenient for users to install and disassemble.

[0004] Secondly, most shade nets currently available are black. Therefore, to prevent heat from being directly transferred to the greenhouse surface after absorbing heat, most shade nets are designed to be suspended. To support the shade net, several ropes are usually installed on the lower side of the shade net, and a corresponding shade net is also installed on the upper side for top restraint. However, the overall wind resistance of the structure is weak, and it is easily blown by the wind, which leads to a large amount of pulling force at the connection between the shade net and the support structure. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic shade net for greenhouses to solve the problems of existing shade nets having weak wind resistance and being difficult to install and disassemble.

[0006] The technical solution of this utility model is as follows: An automatic shade net for greenhouses comprises a front support, a rear support, and several diagonal braces connecting the front and rear supports, forming a net frame that is lower in the front and higher in the back. Sliding sleeves are fitted onto the diagonal braces, and sliding rod assemblies fixed to the sliding sleeves constitute the upper gripper of the net. A fixed rod assembly is provided on the inner side of the front support, which constitutes the lower gripper of the net. A horizontal shaft driven by a motor is provided on the outer side of the front support. One end of a pull rope is wound around the horizontal shaft, and the other end of the pull rope passes over pulleys respectively provided on the front and rear supports and is fixed to the sliding rod assembly.

[0007] Furthermore, the sliding rod assembly and the fixed rod assembly have the same structure. The lower mounting member passes through several diagonal braces, and the upper mounting member is set above the lower mounting member. The upper part of the mesh is fixed between the upper mounting member and the lower mounting member. L-shaped connecting plates are spaced apart on the lower mounting member. Locking bolts pass through the upper part of the connecting plates. The locking bolts apply pressure to the upper mounting member, so that the upper mounting member and the lower mounting member fit tightly together.

[0008] Furthermore, the lower mounting part of the slide rod assembly is fixed on the slide sleeve, and a plurality of grooves are formed on the upper surface of the lower mounting part along the length direction, and a protrusion adapted to the grooves of the lower mounting part is provided on the lower surface of the lower mounting part.

[0009] When the upper mounting part and the lower mounting part abut together, the protrusion will press the surface of the shade net into the groove, making the structure more secure and preventing the ends of the shade net from coming out.

[0010] Furthermore, the structure of the fixed rod assembly is the same as that of the sliding rod assembly, and the lower mounting part of the fixed rod assembly is fixedly mounted on the front bracket.

[0011] Furthermore, several electrically operated telescopic rods that extend and retract vertically are installed on the front and rear supports. A movable pressure plate is fixedly connected between the telescopic ends of two electrically operated telescopic rods that are distributed front to back, and the movable pressure plate is located on the upper side of the diagonal brace.

[0012] Furthermore, several upper limit ropes are fixedly connected between the front and rear supports on the upper side of the shade net, and several lower limit ropes are fixedly connected between the front and rear supports on the lower side of the shade net.

[0013] Setting a lower limit rope can lift the bottom of the shade net, while setting an upper limit rope can limit the shade net from the top.

[0014] In this invention, when installing a shade net, one end of the shade net is inserted between the upper and lower mounting parts. Then, several locking bolts are tightened in sequence, allowing the movable pressure block to move down and press the upper mounting part onto the lower mounting part. At the same time, since the bottom of the upper mounting part is provided with a protrusion that matches the groove, the protrusion can better limit and fix the shade net. When the shade net needs to be replaced, only a few locking bolts need to be loosened. The structural design is easy to disassemble and assemble and will not cause significant damage to the surface of the shade net.

[0015] In this invention, after the shade net is unfolded, to reduce the impact of external wind on the shade net and its fixing structure, several sets of electric telescopic rods can be activated. This causes the pressure plates at the telescopic ends to descend and press the surface of the shade net tightly against the surface of the diagonal bracing rods. This limits the position of the shade net, preventing severe stretching at the connection between the shade net and the device. This design further enhances the overall wind resistance of the structure, allowing it to operate stably and continuously. This invention has a simple structure and is easy to install and disassemble. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2This is a partial structural diagram of the slide bar assembly in this utility model.

[0018] Figure 3 This is a partial structural diagram of the clamping component in this utility model.

[0019] Figure 4 This is a partial structural diagram of the pulley in this utility model.

[0020] The components include: 1. Front upright; 2. Rear upright; 3. Front crossarm; 4. Rear crossarm; 5. Shade net; 6. Upper limit rope; 7. Pull rope; 8. Winding rod; 10. Pressing assembly; 11. Lower limit rope; 12. Electric telescopic rod; 13. Movable pressure plate; 14. Drive motor; 15. Belt; 16. Diagonal brace; 17. Rear pulley; 18. Front pulley; 19. Locking bolt; 20. Movable pressure block; 21. Protrusion; 22. Groove; 23. Sliding sleeve; 24. Upper mounting part; 25. Lower mounting part; 26. Connecting plate. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the structure of this utility model is as follows: several front uprights 1 are provided, and front cross arms 3 are fixedly connected between several front uprights 1 to form a front support; two rear uprights 2 are provided, and rear cross arms 4 are fixedly connected between the two rear uprights 2 to form a rear support; the front support, the rear support, and several diagonal braces 16 connected between the front support and the rear support form a mesh frame that is lower in the front and higher in the rear; a sliding sleeve 23 is sleeved on the diagonal brace 16, and a sliding rod assembly fixed to the sliding sleeve 23 constitutes the upper gripper of the mesh; a fixed rod assembly is provided on the inner side of the front support, which constitutes the lower gripper of the mesh; a horizontal shaft rod driven by a motor is provided on the outer side of the front support, one end of the pull rope 7 is wound around the horizontal shaft rod, and the other end of the pull rope 7 is fixed to the sliding rod assembly after passing over the pulleys respectively provided on the front support and the rear support.

[0023] The diagonal brace 16 is fixedly installed between the front crossarm 3 and the rear crossarm 4, and is fixedly connected between the front crossarm 3 and the rear crossarm 4. The height of the front upright 1 is less than the height of the rear upright 2, and the height of the front crossarm 3 is less than the height of the rear crossarm 4.

[0024] like Figure 2As shown, the sliding rod assembly and the fixed rod assembly have the same structure, including an upper mounting part 24, a lower mounting part 25, an L-shaped connecting plate 26, a locking bolt 19, and a movable pressure block 20. The lower mounting part 25 passes through several diagonal braces 16, and the upper mounting part 24 is positioned above the lower mounting part 25. One side of the connecting plate 26 is vertically fixed to the side of the lower mounting part 25, and the other side is suspended above the lower mounting part 25. A threaded hole is provided on the side of the connecting plate 26 that is suspended from the lower mounting part 25. The locking bolt 19 passes through the threaded hole of the connecting plate 26, and the bottom of the locking bolt 19 is rotatably connected to the movable pressure block 20. The connecting plates 26 are spaced apart on the side of the lower mounting part 25, and the upper mounting part 24 is positioned between the movable pressure block 20 and the lower mounting part 25. The sunshade net 5 is positioned between the upper mounting part 24 and the lower mounting part 25.

[0025] The lower mounting part 25 of the sliding rod assembly is connected to the sliding sleeve 23, and the diagonal brace 16 passes through the sliding sleeve and is slidably connected to the lower mounting part 25; the number of sliding sleeves 23 is the same as the number of diagonal braces 16. The lower mounting part 25 of the fixed rod assembly is fixed to the front bracket. The upper end of the mesh is fixed between the upper mounting part 24 and the lower mounting part 25 of the sliding rod assembly, and the lower end of the mesh is fixed between the upper mounting part 24 and the lower mounting part 25 of the fixed rod assembly.

[0026] The area of ​​the movable pressure block 20 is larger than the bottom area of ​​the locking bolt 19. The movable pressure block 20 is connected to the lower end of the locking bolt 19 to avoid the problem of uneven force when the locking bolt 19 is relatively small. Tightening several locking bolts 19 allows the movable pressure block 20 to move down and press the upper mounting part 24 onto the lower mounting part 25.

[0027] The upper surface of the lower mounting member 25 has several grooves 22 along its length, and the lower surface of the upper mounting member 24 has protrusions 21 that are adapted to the grooves of the lower mounting member.

[0028] The end of the shade net 5 is positioned between the protrusion 21 and the groove 22. The protrusion 21 can better limit and fix the shade net 5. When the upper mounting part 24 abuts against the lower mounting part 25, the protrusion 21 will press the surface of the shade net 5 tightly into the groove 22, making the structure more secure and preventing the end of the shade net 5 from coming out. When the shade net 5 needs to be replaced, it is only necessary to loosen a few locking bolts 19. The structural design is easy to disassemble and assemble without causing significant damage to the surface of the shade net 5, and the design is reasonable.

[0029] like Figure 3As shown, the clamping assembly 10 includes an electric telescopic rod 12 and a movable pressure plate 13. Several electric telescopic rods 12 are arranged on the upper sides of both ends of the diagonal brace 16. The electric telescopic rod 12 on the upper side of the front end of the diagonal brace 16 is fixedly connected to the front crossarm 3, and the electric telescopic rod 12 on the upper side of the rear end of the diagonal brace 16 is fixedly connected to the rear crossarm 4. A movable pressure plate 13 is fixedly connected between the telescopic ends of two electric telescopic rods 12 distributed front-to-back. The movable pressure plate 13 is located on the upper side of the diagonal brace 16. The retraction of the electric telescopic rod 12 causes the movable pressure plate 13 to rise or fall.

[0030] like Figure 4 As shown, the winding rod 8 is rotatably connected between several front uprights 1 and is perpendicular to the front uprights 1. The drive motor 14 is fixedly connected to one side of the front upright 1. The large pulley is fixedly connected to the output end of the drive motor 14. The belt 15 is arranged between the large pulley and the small pulley. The front pulley 18 is fixedly arranged on the front cross arm 3, and the rear pulley 17 is arranged on the rear cross arm 4. The rear pulley 17 and the front pulley 18 are opposite each other. One end of the pull rope 7 is wound around the winding rod 8 at the position of the front pulley, and the other end of the pull rope 7 passes through the front pulley 18 and the rear pulley 17 and is fixedly connected to the lower mounting part 25 of the slide rod assembly.

[0031] The front pulley 18 is vertically positioned above the front crossarm 3, with the pulley facing upwards; the rear pulley 17 is horizontally positioned in front of the rear crossarm 4, with the pulley facing the direction of the front bracket.

[0032] When the user needs to raise the shade net, the drive motor is started and the winding rod is rotated through the cooperation of the large pulley, small pulley and belt. The adjusting rope on the winding rod begins to wind, causing the lower mounting part with the sliding sleeve to drive the end of the shade net to rise.

[0033] A ring structure can be provided on the front side of each front upright 1, through which the winding rod 8 passes and can be fixed to the front upright 1. The height of the winding rod 8 is lower than the height of the front pulley 18.

[0034] When the user needs to raise the shade net 5, the drive motor 14 is started, and the large pulley, small pulley, and belt 15 work together to rotate the winding rod 8, causing the pull rope 17 to begin winding. This causes the lower mounting piece 25, equipped with a sliding sleeve 23, to lift the end of the shade net 5. The front pulley 18 and rear pulley 17 guide the pull rope 7, allowing it to be lifted smoothly. When it is necessary to retract the shade net 5, the direction of rotation of the winding rod 8 is changed, causing the pull rope 7 on its surface to be released. Combined with the gravity of the sliding rod assembly, the shade net 5 is then lowered.

[0035] Several upper limit ropes 6 are fixedly connected between the front and rear supports on the upper side of the shade net 5, and the upper limit ropes 6 can limit the shade net 5 from the top. Several lower limit ropes 11 are fixedly connected between the front and rear supports on the lower side of the shade net 5, and the lower limit ropes 11 can support the bottom of the shade net 5, further limiting the upper and lower parts of the shade net 5.

[0036] When the area of ​​the shade net 5 is large, to avoid a large height difference between the front upright 1 and the rear upright 2, the front upright 1 can be symmetrically set on the other side of the rear upright 2. The rear pulley 17 is also set on the rear side of the rear cross arm 4. Other structures are also symmetrically set between the symmetrical front upright 1 and the rear upright 2.

[0037] The working principle of this utility model is as follows: First step: When installing the shade net 5, one end of the shade net 5 is inserted between the upper mounting part 24 and the lower mounting part 25. Then, several locking bolts 19 are tightened in sequence, so that the movable pressure block 20 can move down and press the upper mounting part 24 onto the lower mounting part 25. At the same time, since the bottom of the upper mounting part 24 is provided with a protrusion 21 that matches the groove 22, the protrusion 21 can better limit and fix the shade net 5. Afterwards, when the shade net 5 needs to be replaced, it is only necessary to loosen several locking bolts 19. The structural design is easy to disassemble and assemble and will not cause significant damage to the surface of the shade net 5. The design is reasonable.

[0038] The second step: After the shade net 5 is unfolded, in order to reduce the impact of external natural wind on the shade net 5 and its fixed structure, the user can activate several sets of electric telescopic rods 12, so that the movable pressure plate 13 at its telescopic end will descend and press the surface of the shade net 5 against the surface of the diagonal brace 16, thereby limiting the shade net 5. This design can improve the overall wind resistance of the structure and enable it to work stably and continuously.

[0039] The power mechanism, power supply system, and control system of this utility model are all existing technologies. All standard parts used in this utility model can be purchased from the market, and can also be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the structure and principles of components known to those skilled in the art can be obtained by those skilled in the art through technical manuals or conventional experimental methods.

Claims

1. An automatic shading net for greenhouses, characterized in that, The mesh frame is composed of a front support, a rear support, and several diagonal braces connecting the front and rear supports, forming a structure that is lower in the front and higher in the back. Sliding sleeves are fitted onto the diagonal braces, and sliding rod assemblies fixed to the sliding sleeves form the upper grippers of the mesh. A fixed rod assembly is provided on the inner side of the front support, which forms the lower grippers of the mesh. A horizontal shaft driven by a motor is provided on the outer side of the front support. One end of the pull rope is wound around the horizontal shaft, and the other end of the pull rope is fixed to the sliding rod assembly after passing over pulleys respectively provided on the front and rear supports.

2. The automatic shading net for greenhouses according to claim 1, characterized in that, The sliding rod assembly and the fixed rod assembly have the same structure. The lower mounting member passes through several diagonal braces, and the upper mounting member is set above the lower mounting member. The upper part of the mesh is fixed between the upper mounting member and the lower mounting member. L-shaped connecting plates are set at intervals on the lower mounting member. Locking bolts pass through the upper part of the connecting plates. The locking bolts apply pressure to the upper mounting member to make the upper mounting member and the lower mounting member fit tightly together.

3. The automatic shading net for greenhouses according to claim 2, characterized in that, The lower mounting part of the slide rod assembly is fixed on the slide sleeve. Several grooves are formed on the upper surface of the lower mounting part along the length direction, and a protrusion adapted to the grooves of the lower mounting part is provided on the lower surface of the lower mounting part.

4. The automatic shading net for greenhouses according to claim 2, characterized in that, The structure of the fixed rod assembly is the same as that of the sliding rod assembly, and the lower mounting part of the fixed rod assembly is fixedly mounted on the front bracket.

5. The automatic shading net for greenhouses according to claim 1, 2, 3 or 4, characterized in that, Several electrically operated telescopic rods that extend and retract vertically are installed on the front and rear supports. A movable pressure plate is fixedly connected between the telescopic ends of two electrically operated telescopic rods that are distributed in a front-to-back manner. The movable pressure plate is located on the upper side of the diagonal brace.

6. The automatic shading net for greenhouses according to claim 1, characterized in that, Several upper limit ropes are fixedly connected between the front and rear supports on the upper side of the shade net, and several lower limit ropes are fixedly connected between the front and rear supports on the lower side of the shade net.

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