An automatic tension adjustment device for kiwi fruit isolation shed shade netting

Abstract

This utility model relates to the technical field of automatic tension adjustment devices, and more particularly to an automatic tension adjustment device for a kiwifruit isolation greenhouse shade net. It includes a support frame, with a crossbeam symmetrically fixed to the upper end of one side of the support frame. A reinforcing rib is provided at the lower end of the crossbeam near the support frame, and both ends of the reinforcing rib are fixed to the surfaces of the crossbeam and the support frame respectively by screws. This design uses the support frame, crossbeam, reinforcing rib, and pillars to form a stable frame structure, ensuring the overall stability of the shade net support frame. The longitudinal beam not only assists in positioning the end of the crossbeam but also closes the opening at the end of the sliding groove, preventing the slider from falling off. The sliding fit design of the sliding groove and the slider allows the shade net to smoothly unfold or retract during tension adjustment. The flexible shade net material can be bent as needed for flexible adjustment. The connecting rod fixed design near the longitudinal beam provides stable fixed-point support for tension adjustment, ensuring the smoothness of the adjustment process.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic tension adjustment devices, and in particular to an automatic tension adjustment device for a kiwifruit isolation shed shade net. Background Technology

[0002] The kiwifruit isolation shed shade net is a facility used for kiwifruit cultivation. Its main function is to provide a suitable growing environment for kiwifruit and prevent direct sunlight and excessive ultraviolet rays from damaging the kiwifruit.

[0003] Shading nets for kiwifruit isolation greenhouses are typically made of high-strength, flexible materials, possessing excellent weather resistance and anti-aging properties, enabling long-term use. For example, Chinese Patent Publication No. "CN220173971U" provides an installation structure for kiwifruit isolation greenhouse shading nets, solving the problem of inconvenient positioning of the shading net during installation in existing technologies, thus reducing installation convenience and efficiency. This kiwifruit isolation greenhouse shading net installation structure includes an isolation frame, with clamping components on both sides of the top of the frame and lifting components on both sides of the bottom. The clamping components include clamping plates movably connected to the corners of the top of the isolation frame via adjusting components. The lifting components include connecting plates slidably connected to the side walls of the isolation frame, with connecting grooves on the top of the connecting plates and a driving component at one end. This utility model has a reasonable structure, facilitating the installation and connection of the shading net. Firstly, the two sides of the shading net are positioned, improving the convenience of connection at both ends and increasing overall installation efficiency.

[0004] Currently, in isolation sheds used for kiwifruit cultivation, a shade net structure is usually added to the shed to avoid excessive sunlight exposure to the kiwifruit during periods of strong sunlight. The tension of the shade net is adjusted when it is deployed or retracted. Higher tension results in a larger deployment range, while lower tension keeps it in a retracted state. By adjusting the tension of the shade net, partial or complete shading can be provided according to the actual situation. Therefore, a tension adjustment device needs to be designed to facilitate the deployment or retraction of the shade net. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing an automatic tension adjustment device for the shading net of a kiwi fruit isolation shed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design an automatic tension adjustment device for kiwifruit isolation greenhouse shade netting, including a support frame. A crossbeam is symmetrically fixed to the upper end of one side of the support frame. A reinforcing rib is provided at the lower end of the crossbeam and near the support frame. The two ends of the reinforcing rib are fixed to the surface of the crossbeam and the support frame respectively by screws. The support frame has an arched structure. A column is also fixedly installed on the lower end of the crossbeam away from the support frame. The ends of the two crossbeams away from the support frame are jointly provided with a longitudinal beam.

[0008] A groove is provided on the inner side of the crossbeam, and several sliders are slidably arranged on the inner side of the groove. The sliders are cylindrical structures, and a connecting rod is installed between two sliders distributed along the same longitudinal direction. The lower ends of the connecting rods are all fixedly installed with shade nets by brackets. The connecting rod located at the very end of the longitudinal beam is fixed to the longitudinal beam by brackets.

[0009] Preferably, a motor is fixedly mounted on the upper end of the support frame via a bracket, the motor has a drive shaft inside, and the end of the shaft is fixedly connected to a threaded rod via a coupling.

[0010] Preferably, a rod seat is fixedly installed at the middle of the upper end of the longitudinal beam by a bracket, and the end of the threaded rod away from the motor is rotatably connected to the inside of the rod seat.

[0011] Preferably, the threaded rod is threaded with a threaded sleeve on its surface, and the threaded sleeve is located above the connecting rod located near the far end of the support frame.

[0012] Preferably, a connecting seat is fixedly installed at the lower end of the outer ring wall of the threaded sleeve, and a connecting block is fixedly installed at the upper end of the connecting rod located near the end of the support frame, with the connecting block and the connecting seat in sliding contact.

[0013] Preferably, a positioning sleeve is provided through both sides of the connecting seat, a positioning pin is slidably sleeved inside the positioning sleeve, a spring is wound around the surface of the positioning pin, and the two ends of the spring are fixedly installed with the end of the positioning pin and the end face of the positioning sleeve, respectively. A positioning seat is fixedly installed on both sides of the connecting block, and the end of the positioning pin away from the spring is inserted and connected to the positioning seat.

[0014] Preferably, a pad is fixedly installed on one side of the support column, and an mounting plate is welded and fixed to the lower end of the longitudinal beam, with one side of the mounting plate tightly attached to the surface of the pad.

[0015] Preferably, a threaded post is welded and fixed to the surface of the pad, and an inner sleeve that slides and engages with the threaded post is fixed through the surface of the mounting plate. A threaded cap that fits snugly against the inner sleeve is threaded onto the end of the threaded post.

[0016] The design scheme proposed in this utility model has the following beneficial effects in application:

[0017] 1. This solution uses a support frame, crossbeams, reinforcing ribs and columns to form a stable frame structure, ensuring the overall stability of the shade net support frame. The longitudinal beams not only help to position the ends of the crossbeams, but also close the openings at the ends of the slide grooves to prevent the sliders from falling off. The sliding fit design between the slide grooves and the sliders allows the shade net to be smoothly unfolded or retracted during tension adjustment. The flexible shade net material can be bent as needed to achieve flexible adjustment. The connecting rod fixed design near the longitudinal beams provides stable fixed-point support for tension adjustment, ensuring the smoothness of the adjustment process.

[0018] 2. As described in 1, by using a stepper motor to drive the threaded rod to rotate, and the threaded sleeve to drive the connecting rod to move horizontally, the tension of the shade net is automatically adjusted. The forward and reverse switch of the motor controls the unfolding and retraction of the shade net, which is easy to operate. The rod seat provides rotational support for the end of the threaded rod to ensure transmission stability. The threaded sleeve and the connecting rod are quickly connected through the connecting seat and connecting block, which is convenient for installation and maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0020] Figure 2 This is a top view of the overall structure of this utility model;

[0021] Figure 3 This is a bottom view of the overall bottom of this utility model;

[0022] Figure 4 For the present utility model Figure 1 Enlarged view of point A;

[0023] Figure 5 This is a partially enlarged schematic diagram of the connecting seat and connecting block of this utility model.

[0024] In the diagram: 1. Support frame; 11. Crossbeam; 12. Reinforcing rib; 13. Column; 14. Longitudinal beam; 15. Slide groove; 16. Slider; 17. Connecting rod; 18. Shade net; 101. Motor; 102. Threaded rod; 103. Rod seat; 104. Threaded sleeve; 105. Connecting seat; 106. Connecting block; 1001. Positioning sleeve; 1002. Positioning pin; 1003. Spring; 1004. Positioning seat; 2. Pad; 21. Mounting plate; 22. Threaded column; 23. Internal sleeve; 24. Threaded cap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-5 An automatic tension adjustment device for a kiwifruit isolation shed shade net includes a support frame 1. A crossbeam 11 is symmetrically fixed to the upper end of one side of the support frame 1. A reinforcing rib 12 is provided at the lower end of the crossbeam 11 and near the support frame 1. The two ends of the reinforcing rib 12 are fixed to the surface of the crossbeam 11 and the support frame 1 respectively by screws. The support frame 1 has an arched structure. A column 13 is also fixedly installed on the lower end of the crossbeam 11 away from the support frame 1. A longitudinal beam 14 is provided at the end of the two crossbeams 11 away from the support frame 1. The support frame 1, crossbeam 11, reinforcing rib 12, and column 13 can ensure the stability of the entire shade net 18 supporting the frame. The longitudinal beam 14 can assist in positioning the ends of the two crossbeams 11 and close the end opening of the slide groove 15.

[0027] A groove 15 is provided on the inner side of the crossbeam 11. Several sliders 16 are slidably arranged inside the groove 15. The sliders 16 are cylindrical structures. A connecting rod 17 is installed between two sliders 16 distributed along the same longitudinal direction. The lower ends of the connecting rods 17 are fixedly installed with shade nets 18 by brackets. The connecting rod 17 located at the end closest to the longitudinal beam 14 is fixed to the longitudinal beam 14 by brackets. The sliders 16 can slide inside the groove 15. When the shade net 18 is unfolded or retracted by tension adjustment, it can move in coordination. The shade net 18 is made of flexible material and can be bent according to the unfolding or retraction. The connecting rod 17 located near the longitudinal beam 14 is fixed to the longitudinal beam 14. When unfolding or retracting, it can make the tension adjustment process of the entire shade net 18 have a fixed point stability effect at one end.

[0028] The upper end of the support frame 1 is fixedly mounted with a motor 101 by a bracket. The motor 101 has a drive shaft inside, and the end of the shaft is fixedly connected to a threaded rod 102 by a coupling. The motor 101 is a stepper motor and is externally connected to a forward and reverse switch via wires. The forward and reverse switch is model HY2-8. After the motor 101 is powered on, its shaft is linked and drives the threaded rod 102 to rotate.

[0029] Among them, a rod seat 103 is fixedly installed at the middle of the upper end of the longitudinal beam 14 by a bracket. The end of the threaded rod 102 away from the motor 101 is rotatably connected to the inside of the rod seat 103. When the threaded rod 102 rotates continuously, the rod seat 103 can provide rotational support for the end of the threaded rod 102 away from the motor 101.

[0030] The threaded rod 102 has a threaded sleeve 104 threaded onto its surface. The threaded sleeve 104 is located above the connecting rod 17, which is positioned near the end of the support frame 1. Since the lower end of the threaded sleeve 104 is fixed to the connecting rod 17 near the support frame 1, the connecting rod 17 can also serve as a limiting component. When the motor 101 drives the threaded rod 102 to rotate via the rotating shaft, the threaded sleeve 104 can move. Because the lower end of the threaded rod 102 is fixed to the connecting rod 17, the connecting rod 17 can slide within the slide groove 15 via the corresponding slider 16, thus enabling the horizontal movement of the connecting rod 17.

[0031] The threaded sleeve 104 has a connecting seat 105 fixedly installed at the lower end of its outer ring wall. The connecting rod 17 located near the end of the support frame 1 has a connecting block 106 fixedly installed at its upper end. The connecting block 106 and the connecting seat 105 are in sliding contact. The connecting seat 105 and the connecting block 106 cooperate to achieve quick positioning and docking of the threaded sleeve 104 and the connecting rod 17 near the support frame 1.

[0032] The connecting seat 105 has a positioning sleeve 1001 extending through both sides. A positioning pin 1002 is slidably fitted inside the positioning sleeve 1001. A spring 1003 is wound around the surface of the positioning pin 1002. The two ends of the spring 1003 are fixedly installed with the end of the positioning pin 1002 and the end face of the positioning sleeve 1001, respectively. The connecting block 106 has a positioning seat 1004 fixedly installed on both sides. The end of the positioning pin 1002 away from the spring 1003 is inserted and connected to the positioning seat 1004. When it is necessary to separate the connecting seat 105 from the connecting block 106, the positioning pin 1002 is pulled, so that the spring 1003 can be stretched, thereby separating the positioning pin 1002 from the positioning seat 1004. Thus, the connecting rod 17 near the support frame 1 can be separated from the threaded sleeve 104.

[0033] Among them, a pad 2 is fixedly installed on one side of the support column 13, and an installation plate 21 is welded and fixed to the lower end of the longitudinal beam 14. One side of the installation plate 21 is tightly attached to the surface of the pad 2. The pad 2 can provide space compensation when the installation plate 21 is installed with the support column 13.

[0034] Among them, a threaded post 22 is welded and fixed to the surface of the pad block 2, and an inner sleeve 23 that slides and fits with the threaded post 22 is fixed through the surface of the mounting plate 21. The end of the threaded post 22 is threaded and installed with a threaded cap 24 that fits tightly against the inner sleeve 23. When the longitudinal beam 14 and the two supports 13 need to be installed, the end faces of the longitudinal beam 14 and the cross beam 11 are tightly attached. At this time, the threaded post 22 and the inner sleeve 23 are positioned through the threaded cap 24 and the threaded post 22 are threaded together, so that the longitudinal beam 14 and the cross beam 11 can be fixed.

[0035] Working principle: This solution uses motor 101 to drive threaded rod 102 to rotate, which in turn drives threaded sleeve 104 to move horizontally on the surface of threaded rod 102. Threaded sleeve 104 transmits power to connecting rod 17, the end closest to support frame 1, through sliding contact between connecting seat 105 and connecting block 106. Since connecting rod 17 achieves horizontal displacement through sliding engagement between slider 16 and slide groove 15, and the sunshade net 18 is fixed below all connecting rods 17, the movement of connecting rod 17 will pull the sunshade net 18 to unfold or retract. The longitudinal beam 14 serves as a fixed end, keeping the connecting rod 17 near it stationary, forming a reference point for tension adjustment. When motor 101 rotates forward, threaded sleeve 104 moves towards longitudinal beam 14, and sunshade net 18 is tightened; when rotating in reverse, it loosens. The elastic design of spring 1003 and positioning pin 1002 ensures quick locking or separation of connecting seat 105 and connecting block 106, facilitating manual intervention and adjustment.

[0036] The connection between the connecting seat 105 and the connecting block 106 is achieved by inserting the positioning pin 1002 into the positioning seat 1004. The spring 1003 provides locking force. When disassembly is required, the connecting rod 17 and the threaded sleeve 104 can be separated simply by pulling the positioning pin 1002. The installation of the longitudinal beam 14 and the transverse beam 11 is completed by threading the threaded post 22 through the inner sleeve 23 and then tightening the threaded cap 24. No welding is required. The sunshade net 18 is fixed to the connecting rod 17 by the bracket. The flexible material allows bending to adapt to the unfolded or retracted state.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kiwifruit shelter sunshade net tension automatic adjusting device, comprising a support frame (1), characterized in that: A crossbeam (11) is symmetrically fixed to the upper end of one side of the support frame (1). A reinforcing rib (12) is provided at the lower end of the crossbeam (11) and on the side close to the support frame (1). The two ends of the reinforcing rib (12) are fixed to the surface of the crossbeam (11) and the support frame (1) respectively by screws. The support frame (1) is an arched structure. A column (13) is also fixedly installed on the lower end of the crossbeam (11) away from the support frame (1). A longitudinal beam (14) is provided at the end of the two crossbeams (11) away from the support frame (1). A groove (15) is provided on the inner side of the crossbeam (11). Several sliders (16) are slidably arranged on the inner side of the groove (15). The sliders (16) are cylindrical structures. A connecting rod (17) is installed between two sliders (16) distributed along the same longitudinal direction. The lower ends of the connecting rods (17) are all fixedly installed with shade nets (18) by brackets. The connecting rod (17) located at the end closest to the longitudinal beam (14) is fixed to the longitudinal beam (14) by brackets.

2. The device according to claim 1, wherein the device is characterized by: The upper end of the support frame (1) is fixedly mounted with a motor (101) by a bracket. The motor (101) has a rotating shaft for driving inside, and the end of the rotating shaft is fixedly connected to a threaded rod (102) by a coupling.

3. The device according to claim 2, wherein the device is characterized by: A rod seat (103) is fixedly installed at the middle of the upper end of the longitudinal beam (14) by a bracket, and the end of the threaded rod (102) away from the motor (101) is rotatably connected to the inside of the rod seat (103).

4. The device according to claim 3, wherein the device is characterized by: The threaded rod (102) is threaded with a threaded sleeve (104), which is located above the connecting rod (17) located near the end of the support frame (1).

5. The device according to claim 4, wherein the device is characterized by: A connecting seat (105) is fixedly installed at the lower end of the outer ring wall of the threaded sleeve (104), and a connecting block (106) is fixedly installed at the upper end of the connecting rod (17) located near the end of the support frame (1). The connecting block (106) and the connecting seat (105) are in sliding contact.

6. The device according to claim 5, wherein the device is characterized by: Positioning sleeves (1001) are provided through both sides of the connecting seat (105). Positioning pins (1002) are slidably sleeved inside the positioning sleeves (1001). Springs (1003) are wound around the surface of the positioning pins (1002). The two ends of the springs (1003) are fixedly installed with the ends of the positioning pins (1002) and the end faces of the positioning sleeves (1001), respectively. Positioning seats (1004) are fixedly installed on both sides of the connecting block (106). The end of the positioning pin (1002) away from the spring (1003) is inserted and connected to the positioning seat (1004).

7. The device according to claim 1, wherein the device is characterized by: A pad (2) is fixedly installed on one side of the support column (13), and an installation plate (21) is welded and fixed to the lower end of the longitudinal beam (14). One side of the installation plate (21) is tightly attached to the surface of the pad (2).

8. The device according to claim 7, characterized in that: The surface of the pad (2) is welded and fixed with a threaded post (22), and the surface of the mounting plate (21) is fixed with an inner sleeve (23) that slides and fits with the threaded post (22). The end of the threaded post (22) is threaded with a threaded cap (24) that fits and abuts against the inner sleeve (23).

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