Automatic snow removal device for greenhouse

Abstract

The present invention discloses an automatic snow removal device for a greenhouse, comprising a rail car, a curved track, a snow removal rod, a pressure detection component and a controller. The rail car can be moved laterally and is arranged on the top of the greenhouse through the walking track. The curved track is connected to the side wall of the rail car. The curvature of the curved track is adapted to the curvature of the greenhouse and a distance is left between the rail car and the snow removal rod. The snow removal rod is slidably arranged on the curved track. The rail car is provided with a driving mechanism for driving the snow removal rod to move back and forth on the curved track. The pressure detection component is arranged on the greenhouse and is used to detect the pressure borne by the greenhouse. The pressure detection component is electrically connected to the controller. When the pressure detection component detects that the pressure borne by the greenhouse exceeds a threshold value, a pressure signal is sent to the controller. After receiving the pressure signal, the controller controls the rail car and the driving mechanism to work. The advantage is that automatic snow removal can be achieved, the greenhouse can be prevented from being crushed by accumulated snow, and the snow removal efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of snow removal, and in particular to an automatic snow removal device for a greenhouse. Background Art

[0002] Greenhouses make it possible to grow vegetables on a large scale off-season, providing fresh vegetables even in the cold winter. This has improved people's living standards and brought great convenience to people, and as a result, they have been widely promoted and applied in my country. Greenhouses are covered with plastic film, which is lightweight, transmits light, and has good heat preservation properties, and is inexpensive. The main structure is constructed of a lightweight frame material, achieving low cost and ease of construction. However, these greenhouses are easily crushed by accumulated snow in winter, especially in snowy northern regions. To avoid economic losses, people have to regularly clean the snow from the greenhouses using cleaning tools, a labor-intensive and laborious process.

[0003] For this purpose, a Chinese utility model patent with application number CN202021484667.0 discloses a greenhouse snow removal device, which has a main motion track arranged on the roof, and the snow removal mechanism is arranged on a surface perpendicular to the length direction of the greenhouse and adapted to the curvature of the greenhouse top surface. A vibration mechanism is arranged on the snow removal mechanism. The snow removal principle of this device is to vibrate the snow to loosen the snow first, and then use a scraper to sweep the snow. Although it can achieve the purpose of snow removal, its disadvantages are: 1. Vibration can not only make the snow fluffy, but also compact the snow, which is very likely to increase the difficulty of snow removal; 2. Near the top surface of the greenhouse, the slope is relatively gentle, and the accumulation angle of the snow is large. When this area falls naturally due to gravity, the thickness of the snow must have caused damage to the greenhouse. Summary of the Invention

[0004] In order to solve the deficiencies in the above-mentioned prior art, the present invention provides an automatic snow removal device for a greenhouse, which can realize automatic snow removal, prevent accumulated snow from crushing the greenhouse, and improve snow removal efficiency.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an automatic snow removal device for a greenhouse, comprising a rail car, a curved track, a snow removal rod, a pressure detection component and a controller, wherein the rail car can be moved laterally and is arranged on the top of the greenhouse through a walking track, and the curved track is connected to the side wall of the rail car, the curvature of the curved track is adapted to the curvature of the greenhouse, and a distance is left between the rail car and the snow removal rod. The snow removal rod is slidably arranged on the curved track, and the rail car is provided with a driving mechanism for driving the snow removal rod to move back and forth on the curved track. The pressure detection component is arranged on the greenhouse for detecting the pressure borne by the greenhouse, and the pressure detection component is electrically connected to the controller; when the pressure detection component detects that the pressure borne by the greenhouse exceeds a threshold value, it sends a pressure signal to the controller, and after receiving the pressure signal, the controller controls the rail car and the driving mechanism to operate.

[0006] Preferably, the rail vehicle comprises a frame, two first wheels, two second wheels and a power mechanism, a first transmission shaft and a second transmission shaft are provided at the bottom of the frame, the two first wheels are respectively connected to the two ends of the first transmission shaft, the two second wheels are respectively connected to the two ends of the second transmission shaft, and the first wheels and the second wheels are respectively embedded in the walking track, and the power mechanism is provided on the frame and is used to drive the first transmission shaft to rotate. In this structure, the rail vehicle adopts a lightweight design, which includes a frame, two first wheels, two second wheels and a power mechanism, the two first wheels are rotatably connected to the bottom of the frame through the first transmission shaft, and the two first wheels are respectively located on the front and rear sides of the frame, the two second wheels are rotatably connected to the bottom of the frame through the second transmission shaft, and the two second wheels are respectively located on the front and rear sides of the frame, and the second wheel is also located on the left side of the first wheel, when the power mechanism drives the first transmission shaft to rotate, the entire frame moves on the walking track, and the power mechanism is also controlled by a controller to achieve the purpose of precise movement.

[0007] Preferably, the power mechanism includes a power motor, a first bevel gear, a second bevel gear, a wheel axle, a third bevel gear and a fourth bevel gear. The power motor is fixed on the frame, the output shaft of the power motor is coaxially fixed with the first bevel gear, the wheel axle is rotatably arranged on the frame, the second bevel gear is meshed with the first bevel gear and is coaxially fixed to the upper end of the wheel axle, the third bevel gear is coaxially fixed to the lower end of the wheel axle, and the fourth bevel gear is coaxially fixed on the first transmission shaft and meshed with the third bevel gear. In this structure, a bevel gear transmission method is adopted, which has good self-locking performance. When the power motor is not working, the entire rail car will not move on the walking track, and the transmission is smooth, which is conducive to the smooth feeding of the rail car. Its specific working principle is that when the power motor is started, it drives the first bevel gear coaxially connected to the output shaft of the power motor to rotate, and the rotation of the first bevel gear drives the second bevel gear meshed with it to rotate. Since the second bevel gear and the third bevel gear are respectively fixed at the upper and lower ends of the wheel axle, when the second bevel gear rotates, it drives the wheel axle and the third bevel gear to rotate. Because the third bevel gear is meshed with the fourth bevel gear, the rotation of the first transmission shaft is finally realized, so as to achieve the purpose of moving the entire rail car.

[0008] Preferably, the walking track includes two guide rails fixed at intervals on the top of the greenhouse, each guide rail being fixed to the greenhouse by a plurality of spaced-apart pillars, the first wheel and the second wheel being respectively embedded in the corresponding guide rails, and a first travel switch being respectively provided at both ends of one of the guide rails, the first travel switch being electrically connected to the controller. In this structure, the two guide rails correspond to the two first wheels and the two second wheels respectively, and the first wheel and the second wheel on the same side are embedded in the corresponding guide rails. In this way, the structural distortion problem caused by the different travel speeds of multiple tracks is avoided, the reliability is higher, and the travel is more stable and smooth. At the same time, the arrangement of the first travel switch at the top of the greenhouse can also reduce the impact of ground debris on the movement of the entire device. The arrangement of the first travel switch limits the travel of the railcar. When the first wheel or the second wheel contacts the first travel switch, a signal is sent to the controller. After receiving the signal, the controller controls the power motor to stop moving and then reverses. The railcar then travels in the opposite direction to the other end, and the entire device removes snow from the greenhouse again to improve the snow removal effect.

[0009] Preferably, the driving mechanism includes a driving motor, a reducer, a first connecting rod and a second connecting rod. A hinged seat is fixed to the rear end of the snow removal rod. The driving motor and the reducer are respectively fixed on the rail car. The output shaft of the driving motor is fixed to the input shaft of the reducer. A support shaft is connected to the output shaft of the reducer. The support shaft is fixed to the lower end of the first connecting rod. The upper end of the first connecting rod is hinged to the upper end of the second connecting rod, and the lower end of the second connecting rod is hinged to the hinged seat. In this structure, when the driving motor drives the reducer to work, the reducer drives the support shaft to rotate, and the rotation of the support shaft drives the first connecting rod fixed to it to rotate around the support shaft, thereby changing the position of the first connecting rod, and then driving the second connecting rod to move. The upper end of the second connecting rod is hinged to the upper end of the first connecting rod, so that there is an angle between the second connecting rod and the first connecting rod. When the support shaft drives the first connecting rod to rotate clockwise, the first connecting rod tilts forward, the angle becomes larger, and the second connecting rod also extends forward, so that the snow removal rod moves forward on the arc track until the snow removal of the greenhouse is completed. After that, the driving motor reverses, drives the first connecting rod to rotate in the opposite direction, so that the angle becomes smaller, the second connecting rod also retreats, and the snow removal rod is reset, such as repeated movement to achieve the expected snow removal effect. In addition, the use of a connecting rod structure to drive the movement of the snow removal rod is more flexible, expands the movement range of the snow removal rod, and is not easy to get stuck, making the snow removal process smoother.

[0010] Preferably, the frame is further provided with an indicator light and a buzzer, each of which is electrically connected to the controller. In this structure, after the pressure detection component detects a pressure signal, it transmits it to the controller, which then transmits the corresponding signal to the buzzer and indicator light, causing the buzzer to operate and the indicator light to light up, thereby reminding people to start snow removal work.

[0011] Preferably, the pressure detection assembly includes multiple pressure sensors disposed on the surface of the greenhouse, each of which is electrically connected to the controller, which is an Arduino controller. In this configuration, the pressure sensors are located on both sides and in the middle of the greenhouse. The pressure sensors may be FSR402 pressure sensors. If any pressure sensor detects that the pressure on the greenhouse exceeds a threshold, it sends a pressure signal to the controller, thereby performing snow removal.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. With intelligent monitoring, the entire device will automatically perform snow removal only when the pressure detection component detects that the pressure on the greenhouse exceeds the threshold, avoiding frequent startup and effectively saving resources;

[0014] 2. The walking track is set on the top of the greenhouse, which guides the movement of the rail car and avoids the structural distortion problem caused by the different walking speeds of multiple tracks. It has higher reliability and can also reduce the impact of ground debris on the movement of the snow removal frame, thus reducing investment.

[0015] 3. The curvature of the arc track is adapted to the curvature of the greenhouse, and there is a distance between it and the greenhouse, thus avoiding applying additional pressure on the greenhouse. The arc track is used for the sliding of the snow removal rod, so that the snow removal rod is driven by the driving mechanism to perform snow removal operations. In places with larger slopes, the snow removal rod falls by itself due to gravity, which is more scientific and reasonable and reduces weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0018] Figure 3 Schematic diagram of the three-dimensional structure of the rail vehicle in the present invention;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the power mechanism of the present invention;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the first connecting rod, the second connecting rod and the snow removal rod in the present invention when they are coordinated;

[0021] Figure 6 It is a principle block diagram of the circuit part in the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0023] Embodiment 1: As shown in the figure, an automatic snow removal device for a greenhouse includes a rail car 1, a curved track 3, a snow removal rod 4, a pressure detection component 5 and a controller 6. The rail car 1 can be moved laterally through the walking track 2 and is set on the top of the greenhouse 9. The curved track 3 is connected to the side wall of the rail car 1. The curvature of the curved track 3 is adapted to the curvature of the greenhouse 9, and a distance is left between the rail car 1 and the snow removal rod 4. The snow removal rod 4 is slidably set on the curved track 3. The rail car 1 is provided with a driving mechanism 7 for driving the snow removal rod 4 to move back and forth on the curved track 3. The pressure detection component 5 is set on the greenhouse and is used to detect the pressure borne by the greenhouse 9. The pressure detection component 5 is electrically connected to the controller 6; when the pressure detection component 5 detects that the pressure borne by the greenhouse 9 exceeds the threshold, it sends a pressure signal to the controller 6. After receiving the pressure signal, the controller 6 controls the rail car 1 and the driving mechanism 7 to work.

[0024] In this embodiment, the rail vehicle 1 includes a frame 11, two first wheels 12, two second wheels 13 and a power mechanism 14. A first transmission shaft 15 and a second transmission shaft 16 are provided at the bottom of the frame 11. The two first wheels 12 are respectively connected to the two ends of the first transmission shaft 15, and the two second wheels 13 are respectively connected to the two ends of the second transmission shaft 16. The first wheels 12 and the second wheels 13 are respectively embedded in the walking track 2. The power mechanism 14 is provided on the frame 11 and is used to drive the first transmission shaft 15 to rotate. In this structure, the rail vehicle 1 adopts a lightweight design, which includes a frame 11, two first wheels 12, two second wheels 13 and a power mechanism 14. The two first wheels 12 are rotatably connected to the bottom of the frame 11 through a first transmission shaft 15, and the two first wheels 12 are respectively located on the front and rear sides of the frame 11. The two second wheels 13 are rotatably connected to the bottom of the frame 11 through a second transmission shaft 16, and the two second wheels 13 are respectively located on the front and rear sides of the frame 11. The second wheel 13 is also located on the left side of the first wheel 12. When the power mechanism 14 drives the first transmission shaft 15 to rotate, the entire frame 11 moves on the walking track 2. The power mechanism 14 is also controlled by the controller 6 to achieve the purpose of precise movement.

[0025] Embodiment 2: As shown in the figure, different from Embodiment 1, the power mechanism 14 includes a power motor 141, a first bevel gear 142, a second bevel gear 143, a wheel axle 144, a third bevel gear 145 and a fourth bevel gear 146. The power motor 141 is fixed on the frame 11, and the output shaft of the power motor 141 is coaxially fixed with the first bevel gear 142. The wheel axle 144 is rotatably set on the frame 11. The second bevel gear 143 is engaged with the first bevel gear 142 and is coaxially fixed to the upper end of the wheel axle 144. The third bevel gear 145 is coaxially fixed to the lower end of the wheel axle 144. The fourth bevel gear 146 is coaxially fixed on the first transmission shaft 15 and is engaged with the third bevel gear 145. In this structure, a bevel gear transmission method is adopted, which has good self-locking performance. When the power motor 141 is not working, the entire rail car 1 will not move on the walking track 2, and the transmission is smooth, which is conducive to the smooth feeding of the rail car 1. Its specific working principle is that when the power motor 141 is started, it drives the first bevel gear 142 coaxially connected to the output shaft of the power motor 141 to rotate, and the rotation of the first bevel gear 142 drives the second bevel gear 143 engaged with it to rotate. Since the second bevel gear 143 and the third bevel gear 145 are respectively fixed at the upper and lower ends of the wheel axle 144, when the second bevel gear 143 rotates, it drives the wheel axle 144 and the third bevel gear 145 to rotate. Because the third bevel gear 145 is engaged with the fourth bevel gear 146, the rotation of the first transmission shaft 15 is finally realized, so as to achieve the purpose of moving the entire rail car 1.

[0026] In this embodiment, the walking track 2 includes two guide rails 21 fixed at intervals on the top of the greenhouse 9. Each guide rail 21 is fixed to the greenhouse 9 through a plurality of spaced-apart pillars 22. The first wheel 12 and the second wheel 13 are respectively embedded in the corresponding guide rails 21. A first travel switch 23 is respectively provided at both ends of one of the guide rails 21, and the first travel switch 23 is electrically connected to the controller 6. In this structure, the two guide rails 21 correspond to the two first wheels 12 and the two second wheels 13 respectively. The first wheel 12 and the second wheel 13 on the same side are embedded in the corresponding guide rails 21. In this way, the structural distortion problem caused by the different walking speeds of multiple tracks is avoided, the reliability is higher, and the travel is more stable and smooth. At the same time, it is set at the top of the greenhouse, which can also reduce the impact of ground debris on the movement of the entire device; and the setting of the first travel switch 23 plays a limiting role in the travel of the rail car 1. When the first wheel 12 or the second wheel 13 contacts the first travel switch 23, a signal is sent to the controller 6. After receiving the signal, the controller 6 controls the power motor 141 to stop moving, and then reverses. The rail car 1 travels in reverse to the other end, and the entire device removes snow from the greenhouse again to improve the snow removal effect.

[0027] In this embodiment, the driving mechanism 7 includes a driving motor 71, a reducer 72, a first connecting rod 73 and a second connecting rod 74. The rear end of the snow removal rod 4 is fixed with a hinge seat 75. The driving motor 71 and the reducer 72 are respectively fixed on the rail car 1. The output shaft of the driving motor 71 is fixed to the input shaft of the reducer 72. The output shaft of the reducer 72 is connected to a support shaft 76. The support shaft 76 is fixed to the lower end of the first connecting rod 73. The upper end of the first connecting rod 73 is hinged to the upper end of the second connecting rod 74. The lower end of the second connecting rod 74 is hinged to the hinge seat 75. The second link 74 is connected to the upper end of the first link 73 so that there is an angle between the second link 74 and the first link 73. When the support shaft 76 drives the first link 73 to rotate clockwise, the first link 73 moves forward. As the snow removal rod 4 tilts, the angle becomes larger, and the second connecting rod 74 also extends forward, so that the snow removal rod 4 moves forward on the arc track 3 until the snow removal of the greenhouse is completed. Then the driving motor 71 is reversed, driving the first connecting rod 73 to rotate in the opposite direction, so that the angle becomes smaller, and the second connecting rod 74 also retreats, and the snow removal rod 4 is reset, such as repeatedly moving to achieve the expected snow removal effect. In addition, the use of a connecting rod structure to drive the snow removal rod 4 to move is more flexible, expands the movement range of the snow removal rod 4, and is not prone to jamming, making the snow removal process smoother.

[0028] When the snow pusher is at its maximum side extension position, people can disassemble it on the ground, which can reduce fatigue damage to the track caused by long-term mass imbalance when there is no snow in non-winter.

[0029] Embodiment 3: As shown in the figure, unlike Embodiment 2, an indicator light 81 and a buzzer 82 are further provided on the vehicle frame 11. The indicator light 81 and the buzzer 82 are electrically connected to the controller 6. In this structure, after the pressure detection component 5 detects the pressure signal, it transmits it to the controller 6, which then transmits the corresponding signal to the buzzer 82 and the indicator light 81, causing the buzzer 82 to operate and the indicator light 81 to light up, thereby reminding people to start snow removal work.

[0030] In this embodiment, pressure detection assembly 5 includes multiple pressure sensors positioned on the surface of the greenhouse. Each of these pressure sensors is electrically connected to controller 6, which is an Arduino-based controller. In this configuration, pressure sensors are located on both sides and in the center of greenhouse 9. The pressure sensors, such as the FSR402 pressure sensor, are positioned on both sides and in the center of greenhouse 9. If any of these pressure sensors detects that the pressure on the greenhouse exceeds a threshold, it sends a pressure signal to controller 6, thereby initiating snow removal.

[0031] The working principle of this device is:

[0032] This device is powered by AC power. When the pressure on the greenhouse reaches the set value of the pressure sensor, the pressure sensor sends a signal to the controller 6. The controller 6 sends a start signal, the indicator light 81 lights up, the buzzer 82 sends a short alarm, and the control equipment starts to remove snow. The drive motor 71 works through the reducer 72. With the cooperation of the first connecting rod 73 and the second connecting rod 74, it drives the snow removal rod 4 to slide along the arc guide rail 21, pushing the accumulated snow off the greenhouse. After that, the drive motor 71 reverses to return the snow removal rod 4 to the initial position. A second travel switch is also provided at the initial position. When the snow removal rod 4 touches the second travel switch provided on the arc guide rail 21, the controller 6 controls the drive motor 71 to stop working, and then starts the power mechanism 14. The power motor 141 drives the entire vehicle on the guide rail 21 through a bevel gear transmission, drives to the next working position, and performs snow removal operations at the next position; when the first wheel 12 or the second wheel 13 contacts the first travel switch 23, the rail vehicle 1 will reverse and drive to the end, and the entire device will remove snow from the greenhouse again to improve the snow removal effect.

[0033] It is worth noting that the above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. The present invention can also improve the materials and structures of the various components mentioned above, or replace them with technical equivalents. Therefore, any equivalent structural changes made by applying the description and illustrations of the present invention, or directly or indirectly applied to other related technical fields, are also included in the scope of the present invention.

Claims

1. An automatic snow removal device for greenhouse, characterized by: The utility model comprises a rail car, a curved track, a snow removal rod, a pressure detection component and a controller. The rail car can be laterally moved and is arranged on the top of the greenhouse through the walking track. The curved track is connected to the side wall of the rail car. The curvature of the curved track is adapted to the curvature of the greenhouse and a distance is left between the rail car and the snow removal rod. The snow removal rod is slidably arranged on the curved track. The rail car is provided with a driving mechanism for driving the snow removal rod to move back and forth on the curved track. The pressure detection component is arranged on the greenhouse and is used to detect the pressure borne by the greenhouse. The pressure detection component is electrically connected to the controller. When the pressure detection component detects that the pressure borne by the greenhouse exceeds a threshold value, it sends a pressure signal to the controller. After receiving the pressure signal, the controller controls the rail car and the driving mechanism to operate. The driving mechanism includes a driving motor, a reducer, a first connecting rod and a second connecting rod. A hinge seat is fixed to the rear end of the snow removal rod. The driving motor and the reducer are respectively fixed on the rail car. The output shaft of the driving motor is fixed to the input shaft of the reducer. A support shaft is connected to the output shaft of the reducer. The support shaft is fixed to the lower end of the first connecting rod. The upper end of the first connecting rod is hinged to the upper end of the second connecting rod, and the lower end of the second connecting rod is hinged to the hinge seat.

2. The automatic snow removal device for greenhouse according to claim 1, characterized in that: The rail vehicle includes a frame, two first wheels, two second wheels and a power mechanism. A first transmission shaft and a second transmission shaft are provided at the bottom of the frame. The two first wheels are respectively connected to the two ends of the first transmission shaft, and the two second wheels are respectively connected to the two ends of the second transmission shaft. The first wheels and the second wheels are respectively embedded in the walking track. The power mechanism is provided on the frame and is used to drive the first transmission shaft to rotate.

3. The automatic snow removal device for greenhouse according to claim 2, characterized in that: The power mechanism includes a power motor, a first bevel gear, a second bevel gear, a wheel axle, a third bevel gear and a fourth bevel gear. The power motor is fixed on the vehicle frame, the output shaft of the power motor is coaxially fixed with the first bevel gear, the wheel axle is rotatably arranged on the vehicle frame, the second bevel gear is meshed with the first bevel gear and is coaxially fixed to the upper end of the wheel axle, the third bevel gear is coaxially fixed to the lower end of the wheel axle, and the fourth bevel gear is coaxially fixed on the first transmission shaft and meshed with the third bevel gear.

4. The automatic snow removal device for greenhouse according to claim 2, characterized in that: The walking track includes two guide rails fixed at intervals on the top of the greenhouse, each of the guide rails is fixed to the greenhouse by a plurality of pillars distributed at intervals, the first wheel and the second wheel are respectively embedded in the corresponding guide rails, and a first travel switch is respectively provided at both ends of one of the guide rails, and the first travel switch is electrically connected to the controller.

5. The automatic snow removal device for greenhouse according to claim 2, characterized in that: An indicator light and a buzzer are provided on the vehicle frame, and the indicator light and the buzzer are electrically connected to the controller respectively.

6. The automatic snow removal device for greenhouse according to claim 1, characterized in that: The pressure detection component includes a plurality of pressure sensors arranged on the surface of the greenhouse. The plurality of pressure sensors are electrically connected to the controller respectively, and the controller is an Arduino controller.

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