A rainproof film retraction structure

Abstract

This utility model relates to a rainproof film retraction structure, including a rainproof film, several supports, two guide rails, and a film retraction support. A film retraction mechanism is provided at the top of the film retraction support. The film retraction mechanism includes a rotating shaft, with both ends rotatably mounted on the film retraction support. A reversing disc is fixedly installed at each end of the rotating shaft. Each guide rail is a C-shaped tubular structure, with a traction cable passing through it and its end extending out of the guide rail. Both ends of the rainproof film are connected to the traction cables within the two guide rails. The extended end of the traction cable overlaps the top edge of the reversing disc. A locking part is provided on the edge of the reversing disc to engage with the traction cable. When the reversing disc rotates, it can pull the traction cable out of the guide rail through the locking part, and the traction cable moves downwards after passing the reversing disc. This utility model allows the rainproof film to be stored near the ground, allowing workers to stand on the ground to cover the rainproof film with a protective layer, making protection easier.

Description

Technical Field

[0001] This utility model relates to the field of agricultural technology, specifically to a rain-shielding film retraction structure. Background Technology

[0002] In existing technology, the structure of a rain shelter for crops (vegetables, fruit trees, etc.) includes several supports arranged at intervals along the length of the rain shelter. Two parallel guide rails are attached to the top of the supports, and a rain-proof membrane is installed between the guide rails. The two ends of the rain-proof membrane are connected to sliding parts inside the two guide rails, and can slide on the guide rails with the sliding parts. When it rains, the rain-proof membrane is fully unfolded to block the rain. When the weather is sunny, in order to allow the crops to receive sunlight, the rain-proof membrane is folded back to the end of the guide rails. Because the rain-proof membrane is folded back to the end of the guide rails, it is relatively high and difficult to protect the crops. It ages quickly after being exposed to wind and sun and is easily damaged. Utility Model Content

[0003] The purpose of this utility model is to provide a rain-shielding film retraction structure to address the problem that in the existing technology, the rain-shielding film on the top of the crop rain-shielding shed is located at the end of the guide rail after being folded up, which is relatively high and difficult to protect, and is prone to aging and damage due to wind and sun exposure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rainproof film retraction structure includes a rainproof film and several spaced-apart supports; it also includes two parallel guide rails, each fixedly overlapping the top of all the supports. The structure is characterized by: a film retraction support with a film retraction mechanism at its top; the film retraction mechanism includes a rotating shaft with both ends rotatably mounted on the film retraction support, the shaft rotating around its own centerline; a steering wheel is fixedly mounted at each end of the rotating shaft, the centerlines of the steering wheel and the rotating shaft being collinear; the two steering wheels are respectively positioned opposite the ends of the two guide rails; each guide rail is a C-shaped tubular structure, with a traction cable passing through it and its end extending out of the guide rail; both ends of the rainproof film are connected to the traction cables within the two guide rails; the extended end of the traction cable overlaps the top edge of the steering wheel; the edge of the steering wheel has a locking part that can engage with the traction cable; when the steering wheel rotates, it can pull the traction cable out of the guide rail through the locking part, and the traction cable moves downwards after passing the steering wheel.

[0006] In this utility model employing the aforementioned technical solution, when the film needs to be retracted, the rotating shaft is turned, causing the two reversing discs to rotate. Since the locking part on the reversing disc can engage with the traction cable, the traction cable can be pulled out of the guide rail when the reversing disc rotates. After the reversing disc changes direction, the traction cable moves downward. Since the rainproof film is connected between the two traction cables, the rainproof film moves downward with the traction cable. The rainproof film can be stored on the ground by receiving the downward-moving rainproof film. Compared with the existing technology where the rainproof film on the top of the crop rainproof shed is located at the end of the guide rail after being folded, is relatively high, difficult to protect, and ages quickly due to wind and sun exposure, making it easy to be damaged, this utility model can store the rainproof film near the ground. Workers can stand on the ground to cover the rainproof film with a protective layer, which is easier to protect, avoids wind and sun exposure, slows down the aging of the rainproof film, and makes the rainproof film less prone to damage.

[0007] Furthermore, any of the aforementioned traction cables includes a rope and a plurality of locking blocks threaded on the rope. The locking blocks are fixed on the rope and arranged at equal intervals. The locking part is a groove evenly distributed around the edge of the steering wheel, and the locking blocks can be locked into the groove. When the steering wheel rotates, the locking blocks on the rope are sequentially locked into the groove on the edge of the steering wheel to achieve locking engagement, so that the steering wheel can pull the traction cable.

[0008] Furthermore, the locking block is a spherical ball bearing; the locking groove is a semi-cylindrical groove, and the center line of the locking groove is parallel to the center line of the steering wheel; the locking block is set as a spherical ball bearing, which can easily be locked into the semi-cylindrical locking groove to avoid jamming.

[0009] Furthermore, each steering wheel is equipped with a protective cover, which is fixed to the diaphragm support. A C-shaped channel is formed between the protective cover and the edge of the steering wheel. One end of the C-shaped channel opens towards the end of the guide rail, and the other end opens downwards. Both ends of the C-shaped channel are flared. The width of the C-shaped channel, except for the middle area of ​​the openings at both ends, is smaller than the outer diameter of the locking block. The flared shape of the openings at both ends facilitates the entry and exit of the locking block. The width of the C-shaped channel, except for the middle area of ​​the openings at both ends, is smaller than the outer diameter of the locking block, which provides a radial limiting effect on the locking block and prevents the locking block from coming out of the slot.

[0010] Furthermore, each of the two ends of any one of the card blocks is provided with a limiting clamp, and both limiting clamps are clamped and fixed to the rope; the fixing structure of the card block is simple and easy to implement.

[0011] Furthermore, any of the aforementioned traction cables includes a chain, and the engaging portion consists of circumferentially distributed teeth on the edge of the steering wheel, which can engage within the chain links of the chain; through the engagement of the teeth and the chain, the chain can be pulled when the steering wheel rotates.

[0012] Furthermore, a number of support rods are provided between the two steering wheels; any support rod is arranged parallel to the shaft, and its two ends are fixed on the two steering wheels respectively; the support rods are located on the same cylindrical surface with the shaft as the central axis; the support rods can be used to support the rainproof film to prevent the rainproof film from being deformed by wind and rain and affecting the operation of the film collection mechanism.

[0013] Furthermore, both the bracket and the film collection bracket are pointed, and each of the film collection brackets is provided with a film collection mechanism on both sides of the top. The two film collection mechanisms are symmetrically arranged, and the rotating shafts of the two film collection mechanisms are connected by a universal joint. By connecting the two rotating shafts through the universal joint, it is only necessary to drive one of the rotating shafts to rotate, so that the two film collection mechanisms can work at the same time and collect the rainproof film on both sides at the same time, which is convenient to operate.

[0014] Furthermore, it also includes a geared motor, which is mounted on the film take-up bracket, and its output shaft is coaxially connected to one end of a rotating shaft; the rotation speed is easily controlled by driving the rotating shaft through the geared motor.

[0015] Furthermore, each of the aforementioned traction cables is provided with a number of hooks arranged at intervals, and a row of connection holes arranged at intervals is opened on the opposite two sides of the rainproof film; the hooks are hooked into the connection holes one by one; the traction cable and the rainproof film are connected by hooks, which is simple in structure and easy to disassemble and replace the rainproof film.

[0016] Compared with the existing technology, the beneficial effects of this utility model are as follows: the rainproof film can be stored near the ground, and the staff can stand on the ground to cover the rainproof film with a protective layer, which is easier to protect, avoid wind and sun exposure, slow down the aging of the rainproof film, and the rainproof film is not easily damaged; by connecting two rotating shafts through a universal joint, it is only necessary to drive one of the rotating shafts to rotate, which can drive the two film collection mechanisms to work at the same time, and collect the rainproof film on both sides at the same time, making the operation convenient. Attached image description:

[0017] Figure 1 This is a top view of the present invention;

[0018] Figure 2 for Figure 1 Sectional view of AA;

[0019] Figure 3 for Figure 2 Enlarged view of M;

[0020] Figure 4 A schematic diagram of the installation structure of the film taking-up mechanism and the geared motor on the film taking-up bracket;

[0021] Figure 5 for Figure 4 Enlarged view of N in the middle;

[0022] Figure 6for Figure 4 Enlarged view of P in the middle;

[0023] Figure 7 This is a schematic diagram of the film collection process;

[0024] Figure 8 This is a cross-sectional view of the card block.

[0025] The markings in the diagram are: 1-rainproof film, 2-bracket, 3-film take-up bracket, 4-guide rail, 5-rotating shaft, 6-reversing disc, 7-rope, 8-block, 9-slot, 10-protective cover, 11-universal joint, 12-gear motor, 13-hook, 14-connecting hole, 15-base, 16-rope threading hole, 17-mounting hole, 18-vertical rod, 19-horizontal rod, 20-upright rod, 21-top rod, 22-diagonal brace, 23-connecting plate. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] This embodiment provides a rainproof film take-up structure, including a rainproof film 1 and several supports 2 arranged at intervals; the number of supports 2 is determined according to the spacing between the supports 2 and the length of the agricultural greenhouse. In this embodiment, two supports 2 are selected; it also includes two parallel guide rails 4, which are fixedly attached to the top of all supports 2. The length direction of the guide rails 4 is parallel to the length direction of the agricultural greenhouse; it also includes a take-up support 3, with a take-up mechanism at the top of the take-up support 3; the take-up mechanism includes a rotating shaft 5, with both ends of the rotating shaft 5 rotatably mounted on the take-up support 3, and the rotating shaft 5 can rotate around its own center line; a reversing disc 6 is also fixedly installed at each end of the rotating shaft 5, and the center lines of the reversing disc 6 and the rotating shaft 5 are collinear; two Each steering wheel 6 is positioned opposite to the ends of two guide rails 4. Each guide rail 4 is a C-shaped tubular structure with a traction cable passing through it, and the end of the traction cable extends out of the guide rail 4. Both ends of the rainproof film 1 are connected to the traction cables inside the two guide rails 4. The extended end of the traction cable overlaps the top edge of the steering wheel 6. The edge of the steering wheel 6 is provided with a locking part that can engage with the traction cable. When the steering wheel 6 rotates, the steering wheel 6 can pull the traction cable out of the guide rail 4 through the locking part, and the traction cable moves downward after passing the steering wheel 6. The rainproof film 1 moves downward with the traction cable, and the rainproof film 1 can be stored on the ground by receiving the downward-moving rainproof film 1.

[0029] The top of the film collection bracket 3 is provided with a base 15 at each end of the rotating shaft 5. The base 15 is fixed on the film collection bracket 3 and is provided with a bearing. The end of the rotating shaft 5 is mounted on the bearing.

[0030] In this embodiment, any traction cable includes a rope 7 and a plurality of locking blocks 8 threaded on the rope 7. The locking blocks 8 are fixed on the rope 7 and arranged at equal intervals. The locking part is a groove 9 evenly distributed around the edge of the steering wheel 6, and the locking blocks 8 can be locked in the groove 9. When the steering wheel 6 rotates, the locking blocks 8 on the rope 7 are locked into the groove 9 on the edge of the steering wheel in sequence to achieve locking engagement, so that the steering wheel 6 can pull the traction cable. The rope 7 is made of steel wire.

[0031] The locking block 8 is a spherical ball bearing; the locking groove 9 is a semi-cylindrical groove, and the center line of the locking groove 9 is parallel to the center line of the reversing disc 6.

[0032] Each steering wheel 6 is provided with a protective cover 10, which is fixed on the film take-up bracket 3. A C-shaped channel is formed between the protective cover 10 and the edge of the steering wheel 6. One end of the C-shaped channel opens towards the end of the guide rail 4, and the other end opens downward. Both ends of the C-shaped channel are flared. The width of the C-shaped channel, except for the middle area of ​​the two ends, is smaller than the outer diameter of the locking block 8.

[0033] Each of the two ends of any one of the card blocks 8 is provided with a limiting clamp, and both limiting clamps are clamped and fixed to the rope 7; the structure of the limiting clamps is not limited, as long as they can be fixed to the rope 7 to limit the card block 8.

[0034] Several support rods are provided between the two steering wheels 6; any support rod is arranged parallel to the shaft, and its two ends are fixed on the two steering wheels 6 respectively; the several support rods are located on the same cylindrical surface with the shaft 5 as the central axis;

[0035] Both the support 2 and the film collection support 3 are pointed. A film collection mechanism is provided on each side of the top of the film collection support 3. The two film collection mechanisms are symmetrically arranged, and their rotating shafts 5 are connected by a universal joint 11. In this embodiment, the support 2 includes two vertical rods 18, one horizontal rod 19, one upright rod 20, two top rods 21, and several diagonal braces 22. The two ends of the horizontal rod 19 are fixed to the tops of the two vertical rods 18. The two top rods 21 and the horizontal rod 19 are fixed to form an isosceles triangle. The bottom of the upright rod 20 is fixed to the midpoint of the horizontal rod 19, and the top of the upright rod 20 is fixed to the intersection of the two top rods 21. Several diagonal braces 22 connect the horizontal rod 19 and the top rod 21 to increase structural strength. A rainproof film 1 is provided on each side of the support 2, and the film is collected by two film collection mechanisms. An L-shaped connecting plate 23 is fixed to each end of the top rod 21, and two guide rails 4 are fixedly connected to the two connecting plates 23.

[0036] In addition, both the support 2 and the film collection support 3 can be flat-topped. The support 2 has a guide rail 4 on each side of the top, and the film collection support 3 has a film collection mechanism.

[0037] It also includes a geared motor 12, which is mounted on the film take-up bracket 3, and its output shaft is coaxially connected to one end of a rotating shaft 5.

[0038] Each traction cable is provided with several hooks 13 arranged at intervals, and a row of connecting holes 14 are opened on the opposite two sides of the rainproof film 1. The hooks 13 are hooked into the connecting holes 14 one by one. Each locking block 8 is connected to a hook 13, and each locking block 8 is provided with a rope hole 16. The locking block 8 is threaded onto the rope 7 through the rope hole 16. The locking block 8 is provided with a mounting hole 17 that is perpendicular to but does not intersect with the rope hole 16 for mounting the hook 13. The hook 13 includes a hook part and a straight rod part connected together. The hook part is hooked into the connecting hole 14, and the straight rod part is inserted into the mounting hole 17. Its end extends out of the mounting hole 17 and is threadedly connected to a nut. The nut is used to limit the movement and prevent it from falling out of the locking block 8.

[0039] The structure of the traction cable and the locking part can also be configured such that any traction cable includes a chain, and the locking part consists of circumferentially distributed locking teeth on the edge of the reversing disc 6, which can be locked into the chain links of the chain.

[0040] In this utility model employing the aforementioned technical solution, when the film needs to be collected, the rotating shaft 5 is rotated, causing the two reversing discs 6 to rotate. Since the locking part on the reversing disc 6 can engage with the traction cable, the traction cable can be pulled out of the guide rail 4 through the locking part when the reversing disc 6 rotates. After the reversing disc 6 changes direction, the movement direction of the traction cable changes to downward. Since the rainproof film 1 is connected between the two traction cables, the rainproof film 1 moves downward with the traction cable. The rainproof film 1 can be collected on the ground by receiving the downward-moving rainproof film 1. Compared with the existing... In existing technologies, the rain-shielding film on the top of agricultural crop rain shelters, after being folded up, is located at the end of the guide rail, which is quite high and difficult to protect. It also ages quickly under wind and sun, making it prone to damage. This invention addresses the problem of storing the rain-shielding film near the ground, allowing workers to stand on the ground to cover it with a protective layer, making it easier to protect from wind and sun, slowing down aging, and preventing damage. Furthermore, by connecting two rotating shafts via a universal joint, only one shaft needs to be driven to rotate, enabling both film-shrinking mechanisms to work simultaneously, storing the rain-shielding film on both sides at the same time, making operation convenient.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rain screen membrane retraction structure comprising a rain screen membrane (1) and a plurality of spacers (2) arranged at intervals; further comprising two rails (4) parallel to each other and each fixedly lapped on the top of all the spacers (2), characterized in that: It also includes a film receiving bracket (3), and a film receiving mechanism is provided on the top of the film receiving bracket (3); the film receiving mechanism includes a rotating shaft (5), the two ends of which are rotatably mounted on the film receiving bracket (3), and the rotating shaft (5) can rotate around its own center line; a reversing disk (6) is also fixedly provided at each end of the rotating shaft (5), and the center lines of the reversing disk (6) and the rotating shaft (5) are collinear; the two reversing disks (6) are respectively arranged opposite to the ends of the two guide rails (4); any one of the guide rails (4) is a tubular shape with a C-shaped cross-section. The structure includes a traction cable passing through the guide rail (4) with the end of the traction cable extending out of the guide rail (4); the two ends of the rain shield (1) are respectively connected to the traction cables in the two guide rails (4); the extended end of the traction cable overlaps the top edge of the steering wheel (6); the edge of the steering wheel (6) is provided with a locking part that can engage with the traction cable; when the steering wheel (6) rotates, the steering wheel (6) can pull the traction cable out of the guide rail (4) through the locking part, and the traction cable moves downward after passing the steering wheel (6).

2. The rain-repellent film take-up structure according to claim 1, characterized by: Each of the aforementioned traction cables includes a rope (7) and a plurality of locking blocks (8) threaded on the rope (7). The plurality of locking blocks (8) are fixed on the rope (7) and arranged at equal intervals. The locking part is a slot (9) evenly distributed around the edge of the turntable (6), and the locking blocks (8) can be locked in the slot (9).

3. The rain-shielding film retraction structure according to claim 2, characterized in that: The card block (8) is a spherical ball; the card groove (9) is a semi-cylindrical groove, and the center line of the card groove (9) is parallel to the center line of the turntable (6).

4. The rain-shielding film retraction structure according to claim 2, characterized in that: Each steering wheel (6) is provided with a protective cover (10), which is fixed on the film receiving bracket (3). A C-shaped channel is formed between the protective cover (10) and the edge of the steering wheel (6). One end of the C-shaped channel opens towards the end of the guide rail (4), and the other end opens downward. Both ends of the C-shaped channel are flared. The width of the C-shaped channel, except for the middle area of ​​the two ends, is smaller than the outer diameter of the block (8).

5. The rain-shielding film retraction structure according to claim 2, characterized in that: Each of the two ends of any one of the card blocks (8) is provided with a limiting clamp, and both of the limiting clamps are clamped and fixed on the rope (7).

6. The rain-shielding film retraction structure according to claim 1, characterized in that: Any of the aforementioned traction cables includes a chain, and the locking portion consists of circumferentially distributed locking teeth on the edge of the reversing disc (6), which can be locked into the chain links.

7. The rain-shielding film retraction structure according to claim 1, characterized in that: A plurality of support rods are provided between the two steering wheels (6); any support rod is arranged parallel to the shaft and its two ends are fixed on the two steering wheels (6); the plurality of support rods are located on the same cylindrical surface with the shaft (5) as the central axis.

8. The rain-shielding film retraction structure according to claim 7, characterized in that: Both the support (2) and the film collection support (3) are pointed, and each of the film collection support (3) has a film collection mechanism on both sides of its top. The two film collection mechanisms are symmetrically arranged, and the rotating shafts (5) of the two film collection mechanisms are connected by a universal joint (11).

9. The rain-shielding film retraction structure according to claim 8, characterized in that: It also includes a geared motor (12), which is mounted on the film receiving bracket (3) and its output shaft is coaxially connected to one end of a rotating shaft (5).

10. The rain-shielding film retraction structure according to claim 1, characterized in that: Each of the aforementioned traction cables is provided with a number of hooks (13) arranged at intervals, and a row of connecting holes (14) arranged at intervals is opened on the opposite two sides of the rainproof film (1); the hooks (13) are hooked into the connecting holes (14) one by one.

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