Automatic compensation assembly for chain tightness of big greenhouse curtain rolling machine
By designing an automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines, the problem of chain jamming was solved, enabling automatic chain cleaning and tension adjustment, thereby improving the operating efficiency and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI JIANYE GREENHOUSE ENG CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-08-04
AI Technical Summary
Existing greenhouse curtain rolling machine chains are prone to jamming due to dirt and dust, affecting equipment operating efficiency and service life.
An automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines has been designed, comprising a cleaning mechanism and an adjustment mechanism. The chain is cleaned of dirt through gear transmission and a brush, and the chain tension is automatically adjusted through a limit rod and a spring.
It effectively cleans chain dirt, automatically adjusts chain tension, improves equipment operation stability and service life, and reduces labor intensity and maintenance costs.
Smart Images
Figure CN224592625U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chain tension adjustment technology for greenhouse curtain rolling machines, and in particular to an automatic adjustment and compensation component for chain tension of greenhouse curtain rolling machines. Background Technology
[0002] Greenhouse curtain rolling machines are key equipment in modern facility agriculture. They have completely changed the traditional manual rolling and unrolling of coverings. A single person can operate the machine quickly, significantly improving efficiency and effectively solving the problem of labor shortage. This frees growers from heavy, repetitive labor, allowing them to devote more energy to the refined management of crops.
[0003] The precise control capability of greenhouse curtain rolling machines is the core value. By adjusting the rolling and unrolling amplitude and speed of the covering, the temperature, light and humidity environment inside the greenhouse can be stabilized to meet the needs of crops at different growth stages, reduce yield reduction caused by environmental fluctuations, reduce equipment and covering wear and tear, extend service life, reduce maintenance costs, and respond quickly to sudden weather events to reduce disaster losses and provide a solid guarantee for stable and high yields.
[0004] Greenhouse curtain rolling machines mainly consist of a roller, support frame, transmission chain, hand crank, gearbox, and anti-reverse device. Their most prominent drawbacks are high labor intensity and low efficiency, and they can easily cause frostbite to the hands in low winter temperatures. To solve these problems, existing technologies have been improved through mechanical structure optimization, such as adding a ratchet anti-reverse device to prevent reverse rotation and loss of control, and using multi-stage reduction gears, which effectively reduces the operating burden. However, during operation, the chain often gets stuck due to dirt generated during work and dust from the field, reducing the practicality of the device. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an automatic adjustment and compensation component for the chain tension of a greenhouse curtain rolling machine, which aims to improve the problem that the chain often gets stuck due to dirt generated during operation and dust in the field in the existing technology.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic adjustment and compensation component for the chain tension of a greenhouse curtain rolling machine, comprising a hollow shell, an L-shaped plate on the upper side of the hollow shell, a cleaning mechanism on the inner side of the hollow shell, the cleaning mechanism being used to clean the dirt accumulated on the chain after long-term use, and an adjustment mechanism on the lower side of the L-shaped plate, the adjustment mechanism being used to adjust the tension of the chain; The cleaning mechanism includes a rotating rod and a transmission chain. The rotating rod is rotatably connected to the middle of the inner side of the hollow shell. A gear is fixedly connected to the outer side of the rotating rod. A gear is rotatably connected to the inner side of the L-shaped plate. The gear is rotatably connected to the gear through the transmission chain. A transmission assembly is provided on the front side of the outer wall of the rotating rod. A rotating rod is rotatably connected to the upper middle part of the inner wall of the hollow shell. A gear is fixedly connected to the front side of the outer wall of the rotating rod. A rotating rod is rotatably connected to the left side of the front end of the inner wall of the hollow shell. A gear is fixedly connected to the front side of the inner wall of the rotating rod. The gear meshes with the gear. A brush is fixedly connected to the rear side of the outer wall of the rotating rod.
[0007] As a further description of the above technical solution: The adjustment mechanism includes hollow plates, and multiple hollow plates are respectively fixedly connected to the left and right bottom front and rear ends of the L-shaped plate. Each hollow plate is provided with a limit rod inside, and a slider is slidably connected to the middle of the outer side of each limit rod. A spring is provided on one side of the outer wall of each limit rod. Rotating rods are provided at the bottom of the left and right sides of the L-shaped plate. The front and rear ends of two rotating rods pass through the corresponding sliders. Gears are fixedly connected to the middle of the outer side of two rotating rods. The opposite sides of the two gears are in contact with the transmission chain.
[0008] As a further description of the above technical solution: The transmission assembly includes a concave disc and a transmission belt. The concave disc is fixedly connected to the front side of the gear, and the concave disc is fixedly connected to the rear side of the gear. The concave disc is connected to the concave disc through the transmission belt.
[0009] As a further description of the above technical solution: The storage component includes a slot located on the front side of the hollow shell. A storage box is slidably connected to the inner wall of the slot. A soft handle is fixedly connected to the right outer wall of the storage box. A support plate is fixedly connected to the upper inner wall of the hollow shell.
[0010] As a further description of the above technical solution: The cleaning mechanism also includes a transparent plate, which is slidably connected to the top of the hollow shell, and the transmission chain passes through the top of the transparent plate.
[0011] As a further description of the above technical solution: The cleaning mechanism also includes a fourth rotating rod, which is fixedly connected to the front end of the first rotating rod. The front side of the fourth rotating rod passes through the hollow shell and is rotatably connected to a rotating handle.
[0012] As a further description of the above technical solution: The cleaning mechanism also includes a base, which is fixedly connected to the bottom of the hollow shell. The front side of the base is threaded with multiple through screws at equal intervals, and the rear ends of the multiple through screws all penetrate the base.
[0013] As a further description of the above technical solution: The adjustment mechanism also includes a tripod, and the front sides of the two tripods are threaded with multiple fixing screws at equal intervals. The rear ends of the multiple fixing screws pass through the corresponding tripods and are threaded to the corresponding hollow plates respectively.
[0014] This utility model has the following beneficial effects: 1. In this utility model, by shaking the rotating handle, the rotating handle will drive the rotating rod one to rotate. When the rotating rod one rotates, it will drive the gear one and the concave disk to rotate together. When the concave disk one rotates, it will drive the concave disk two to rotate together through the transmission belt. Since the concave disk two is connected to the gear two, when the concave disk two rotates, it will drive the gear two to rotate together. When the gear two rotates, it will drive the gear three to rotate together. When the gear three rotates, it will drive the brush to rotate through the rotating rod three, so as to clean the chain when winding and unwinding the chain.
[0015] 2. In this utility model, the slider moves inside the hollow plate, so that the slider will not deviate to the left or right when it moves. The slider and gear five will move synchronously when they move. When the transmission chain becomes loose during the use of the device, the transmission chain loses pressure on gear five, and the spring will push the slider outward. When the slider moves, it will drive gear five to move together. Gear five will push against the transmission chain and move outward until the transmission chain is in a taut state, so as to realize the automatic adjustment of the tension of the transmission chain. Attached Figure Description
[0016] Figure 1 This is a perspective view of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model; Figure 2 This is a front view of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model; Figure 3 This is a partial structural cross-sectional view of the cleaning mechanism of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model; Figure 4 This is a partial structural diagram of the transmission component of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model. Figure 5 This is a partial structural exploded view of the storage component of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model; Figure 6 This is a partial structural schematic diagram of the adjustment mechanism of the automatic adjustment and compensation component for the chain tension of the greenhouse curtain machine proposed in this utility model; Figure 7 This is a partial structural cross-sectional view of the adjustment mechanism of the automatic chain tension adjustment and compensation component for greenhouse curtain rolling machines proposed in this utility model.
[0017] Legend: 1. Hollow shell; 2. Cleaning mechanism; 21. Gear 1; 22. Transmission assembly; 221. Concave disc 1; 222. Transmission belt; 223. Concave disc 2; 23. Rotating rod 1; 24. Rotating rod 2; 25. Gear 2; 26. Rotating rod 3; 27. Gear 3; 28. Brush; 29. Storage assembly; 291. Support plate; 292. Storage box; 293. Slot; 294. Soft handle; 210. Transmission chain; 211. Rotating rod 4; 212. Rotating handle; 213. Transparent plate; 214. Base; 215. Through screw; 216. Gear 4; 3. Adjustment mechanism; 31. Hollow plate; 32. Limiting rod; 33. Spring; 34. Slider; 35. Rotating rod 5; 36. Gear 5; 37. Triangular frame; 38. Fixing screw; 4. L-shaped plate. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides an automatic adjustment and compensation component for the chain tension of a greenhouse curtain rolling machine, including a hollow shell 1, an L-shaped plate 4 on the upper side of the hollow shell 1, a cleaning mechanism 2 on the inner side of the hollow shell 1, the cleaning mechanism 2 being used to clean the dirt accumulated on the chain after long-term use, and an adjustment mechanism 3 on the lower side of the L-shaped plate 4, the adjustment mechanism 3 being used to adjust the tension of the chain. The cleaning mechanism 2 includes a rotating rod 23 and a transmission chain 210. The rotating rod 23 is rotatably connected to the inner center of the hollow shell 1. A gear 21 is fixedly connected to the outer side of the rotating rod 23, and the rotating rod 23 can drive the gear 21 to rotate together. A gear 216 is rotatably connected to the inner side of the L-shaped plate 4. The gear 216 is rotatably connected to the gear 21 through the transmission chain 210, and the gear 21 can drive the gear 216 to rotate through the transmission chain 210. A transmission assembly 22 is provided on the front side of the wall. A rotating rod 24 is rotatably connected to the upper middle part of the inner wall of the hollow shell 1. A gear 25 is fixedly connected to the front side of the outer wall of the rotating rod 24. A rotating rod 3 26 is rotatably connected to the left side of the front end of the inner wall of the hollow shell 1. A gear 3 27 is fixedly connected to the front side of the inner wall of the rotating rod 3 26. The gear 3 27 meshes with the gear 25. When the gear 25 rotates, it will drive the gear 3 27 to rotate together. A brush 28 is fixedly connected to the rear side of the outer wall of the rotating rod 3 26. Specifically, when the operator adjusts the transmission chain 210 using the device, the transmission chain 210 will simultaneously drive gear one 21 and gear four 216 to rotate together. When gear one 21 rotates, it will provide rotational power to the transmission component 22 connected to the rotating rod one 23. The transmission component 22 will drive gear two 25 to rotate through the rotating rod two 24. When gear two 25 rotates, it will drive gear three 27, which meshes with it, to rotate. When gear three 27 rotates, it will drive brush 28 to rotate together through the rotating rod three 26. While the transmission chain 210 drives gear one 21 to rotate, the brush 28 rotates in the opposite direction to clean the dirt accumulated on the transmission chain 210.
[0020] Reference Figure 1 , Figure 6 and Figure 7 An embodiment of this utility model is provided: the adjustment mechanism 3 includes a hollow plate 31, and multiple hollow plates 31 are respectively fixedly connected to the left and right bottom front and rear ends of the L-shaped plate 4. Each of the multiple hollow plates 31 is provided with a limit rod 32. Each of the multiple limit rods 32 is slidably connected to a slider 34 at the middle of its outer side. When the slider 34 slides in the hollow plate 31, the limit rod 32 can limit the sliding of the slider 34, so that the slider 34 will not deviate. Each of the multiple limit rods 32 is provided with a spring 33 on one side of its outer wall. Each of the left and right bottom sides of the L-shaped plate 4 is provided with a rotating rod 35. The front and rear ends of the two rotating rods 35 pass through the corresponding sliders 34. Each of the two rotating rods 35 is fixedly connected to a gear 36 at the middle of its outer side. When the slider 34 moves, it can drive the gear 36 to move through the rotating rod 35. The opposite sides of the two gears 36 are in contact with the transmission chain 210. Specifically, since the spring 33 connects the slider 34 and the hollow plate 31, the slider 34 can move within the hollow plate 31. Under the action of the limit rod 32, the slider 34 will not deviate to the left or right when it moves. The slider 34 is connected to the gear 36 through the rotating rod 35. The slider 34 and the gear 36 move synchronously when they move. When the transmission chain 210 becomes loose during the use of this device, the transmission chain 210 loses pressure on the gear 36, and the spring 33 will push the slider 34 outward. When the slider 34 moves, it will drive the gear 36 to move together. The gear 36 pushes against the transmission chain 210 and moves outward until the transmission chain 210 is in a taut state, thereby realizing the automatic adjustment of the tension of the transmission chain 210.
[0021] Reference Figure 4 , Figure 5 and Figure 6 In one embodiment of this utility model, the transmission assembly 22 includes a concave disc 221 and a transmission belt 222. The concave disc 221 is fixedly connected to the front side of the gear 21, and the rear side of the gear 25 is fixedly connected to the concave disc 223. The concave disc 223 is connected to the concave disc 221 via the transmission belt 222. Rotation of the gear 21 can drive the gear 25 to rotate together via the transmission assembly 22. The storage assembly 29 includes a slot 293, which is located on the front side of the hollow shell 1. The inner wall of the slot 293 is slidably connected to a storage box 292, and the right outer wall of the storage box 292 is fixedly connected to a soft handle 294. The storage component 29 can collect the dirt swept off the transmission chain 210 by the cleaning mechanism 2. The upper inner wall of the hollow shell 1 is fixedly connected to a support plate 291, which can support the storage box 292. The cleaning mechanism 2 also includes a transparent plate 213, which is slidably connected to the top of the hollow shell 1, and the transmission chain 210 passes through the top of the transparent plate 213. Specifically, when gear 1 21 drives concave disk 1 221 to rotate, transmission belt 222 is connected to concave disk 1 221, and transmission belt 222 is also connected to concave disk 223. When concave disk 1 221 rotates, it will drive concave disk 223 to rotate together through transmission belt 222, realizing the transmission effect of gear 1 21 to gear 2 25. The dirt swept off by cleaning mechanism 2 on transmission chain 210 will accumulate in storage box 292. If you want to clean the dirt in storage box 292, pull the soft handle 294 to take out storage box 292. After cleaning, push it back into slot 293. The hollow shell 1 has a support plate 291 inside, which supports storage box 292. After storage box 292 is pushed back into slot 293, it will not fall or shift under the action of support plate 291.
[0022] Reference Figure 2 and Figure 6In one embodiment of this utility model, the cleaning mechanism 2 further includes a rotating rod 211, which is fixedly connected to the front end of the rotating rod 23. The front side of the rotating rod 211 passes through the hollow shell 1 and is rotatably connected to a rotating handle 212. Shaking the rotating handle 212 can provide rotational force to the gear 21 connected to it through the rotating rod 211. The cleaning mechanism 2 also includes a base 214, which is fixedly connected to the bottom of the hollow shell 1. The front side of the base 214 is threaded with multiple through screws 215 at equal intervals. The rear ends of the multiple through screws 215 all pass through the base 214. The through screws 215 can help fix the entire device. The adjustment mechanism 3 also includes a tripod 37. The front sides of the two tripods 37 are threaded with multiple fixing screws 38 at equal intervals. The rear ends of the multiple fixing screws 38 all pass through the corresponding tripod 37 and are threaded to the corresponding hollow plate 31 respectively. Specifically, by shaking the rotating handle 212, rotational force can be provided to the gear 21 connected to it via the rotating rod 211, making the device easier to use. When the device is needed, it is fixed in the desired position in the greenhouse by the base 214 and the through screw 215. In the adjustment mechanism 3, the hollow plate 31 and the L-shaped plate 4 need to be connected by the tripod 37, and the tripod 37 is fixed to the outside of the adjustment mechanism 3 by the fixing screw 38.
[0023] Working principle: When the operator uses this device, by cranking the rotating handle 212, which is connected to the rotating rod 23 via the rotating rod 211, cranking the handle 212 will cause the rotating rod 23 to rotate. Since the rotating rod 23 is connected to the gear 21 and the concave disk 221, the rotation of the rotating rod 23 will cause the gear 21 and the concave disk 221 to rotate together. Because the transmission chain 210 meshes with the gear 21, the rotation of the gear 21 will cause the transmission chain 210 to move around the gear 21. As the gear 21 moves the transmission chain 210, the transmission chain 210 will also move... When gear 4 216 rotates, the transmission belt 222 is connected to concave disc 1 221, and the transmission belt 222 is also connected to concave disc 223. When concave disc 1 221 rotates, it will drive concave disc 223 to rotate together through the transmission belt 222. Since concave disc 223 is connected to gear 25, when concave disc 223 rotates, it will drive gear 25 to rotate together. Since gear 25 meshes with gear 3 27, when gear 25 rotates, it will drive gear 3 27 to rotate together. The rotation of gear 3 27 will drive brush 28 to rotate through rotating rod 3 26, thereby cleaning the chain while the device is retracting or extending the chain. Furthermore, since spring 33 connects slider 34 and hollow plate 31, slider 34 can move within hollow plate 31. Since limit rod 32 connects to hollow plate 31, slider 34 will not deviate to the left or right when moving. Since slider 34 is connected to gear 36 via rotating rod 35, slider 34 and gear 36 will move synchronously. When transmission chain 210 becomes loose during the use of this device, transmission chain 210 loses pressure on gear 36, and spring 33 will push slider 34 outward. Since slider 34 is connected to gear 36 via rotating rod 35, slider 34 will drive gear 36 to move together when it moves. Gear 36 pushes against transmission chain 210 and moves outward until transmission chain 210 is in a taut state, thus realizing automatic adjustment of the tension of transmission chain 210.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 big greenhouse curtain machine chain tightness automatic adjustment compensation assembly, comprising a hollow shell (1), characterized in that: An L-shaped plate (4) is provided on the upper side of the hollow shell (1), and a cleaning mechanism (2) is provided on the inner side of the hollow shell (1). The cleaning mechanism (2) is used to clean the dirt accumulated on the chain after long-term use. An adjustment mechanism (3) is provided on the lower side of the L-shaped plate (4). The adjustment mechanism (3) is used to adjust the tightness of the chain. The cleaning mechanism (2) includes a rotating rod (23) and a transmission chain (210). The rotating rod (23) is rotatably connected to the inner middle of the hollow shell (1). A gear (21) is fixedly connected to the outer side of the rotating rod (23). A gear (216) is rotatably connected to the inner side of the L-shaped plate (4). The gear (216) is rotatably connected to the gear (21) through the transmission chain (210). A transmission assembly (22) is provided on the front side of the outer wall of the rotating rod (23). The hollow shell (1) A rotating rod 2 (24) is rotatably connected to the upper part of the inner wall. A gear 2 (25) is fixedly connected to the front side of the outer wall of the rotating rod 2 (24). A rotating rod 3 (26) is rotatably connected to the left side of the front end of the inner wall of the hollow shell (1). A gear 3 (27) is fixedly connected to the front side of the inner wall of the rotating rod 3 (26). The gear 3 (27) meshes with the gear 2 (25). A brush (28) is fixedly connected to the rear side of the outer wall of the rotating rod 3 (26). A storage component (29) is provided on the front side of the interior of the hollow shell (1).
2. The automatic compensation assembly for chain tightness of a greenhouse curtain rolling machine according to claim 1, characterized in that: The adjustment mechanism (3) includes a hollow plate (31). Multiple hollow plates (31) are fixedly connected to the left and right bottom front and rear ends of the L-shaped plate (4). Limiting rods (32) are provided inside the multiple hollow plates (31). Sliding sliders (34) are slidably connected to the middle of the outer side of the multiple limiting rods (32). Springs (33) are provided on one side of the outer wall of the multiple limiting rods (32). Rotating rods (35) are provided at the bottom of the left and right sides of the L-shaped plate (4). The front and rear ends of the two rotating rods (35) pass through the corresponding sliders (34). Gears (36) are fixedly connected to the middle of the outer side of the two rotating rods (35). The opposite sides of the two gears (36) are in contact with the transmission chain (210).
3. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The transmission assembly (22) includes a concave disc (221) and a transmission belt (222). The concave disc (221) is fixedly connected to the front side of the gear (21), and the rear side of the gear (25) is fixedly connected to the concave disc (223). The concave disc (223) is connected to the concave disc (221) via the transmission belt (222).
4. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The storage component (29) includes a slot (293) which is located on the front side of the hollow shell (1). A storage box (292) is slidably connected to the inner wall of the slot (293). A soft handle (294) is fixedly connected to the right outer wall of the storage box (292). A support plate (291) is fixedly connected to the upper inner wall of the hollow shell (1).
5. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The cleaning mechanism (2) also includes a transparent plate (213), which is slidably connected to the top of the hollow shell (1), and the transmission chain (210) passes through the top of the transparent plate (213).
6. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The cleaning mechanism (2) also includes a rotating rod four (211), which is fixedly connected to the front end of the rotating rod one (23). The front side of the rotating rod four (211) passes through the hollow shell (1) and is rotatably connected to a rotating handle (212).
7. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The cleaning mechanism (2) also includes a base (214), which is fixedly connected to the bottom of the hollow shell (1). The front side of the base (214) is threaded with multiple through screws (215) at equal intervals, and the rear ends of the multiple through screws (215) all penetrate the base (214).
8. The automatic compensation assembly for chain tightness of a greenhouse curtain roller according to claim 1, characterized in that: The adjustment mechanism (3) also includes a tripod (37). The front sides of the two tripods (37) are threaded with multiple fixing screws (38) at equal intervals. The rear ends of the multiple fixing screws (38) pass through the corresponding tripod (37) and are threaded to the corresponding hollow plate (31) respectively.