Self-rolling type inner covering heat preservation system of sunlight greenhouse

Abstract

The utility model relates to the field of sunlight greenhouse covering heat preservation, in particular to a self-rolling type inner covering heat preservation system of a sunlight greenhouse, which comprises a track beam, a covering frame, a carrying frame, a motor, a speed reducer, a rolling rod, a heat preservation covering object and a balancing weight, the covering frame is arranged in parallel to form a covering supporting shed frame, and one side of the heat preservation covering object is fixedly connected to the upper end of the covering supporting shed frame. The rolling rod is connected to the other side of the heat preservation covering object, the track beam is provided with a limiting track structure, the carrying frame is provided with a limiting connecting structure corresponding to the track beam structure and connected to the track beam in a matched and hung mode, the motor, the speed reducer and the rolling rod are installed on the carrying frame, and the motor drives the speed reducer to operate so as to drive the rolling rod to rotate. The carrying frame is connected with the balancing weight for balancing the overall weight of the carrying frame, the motor and the speed reducer, dynamic balance stress of the winding rod can be kept all the time in the operation process, the fatigue damage tendency is avoided or reduced, control efficiency can be improved in production application, the heat preservation effect can be improved, and production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of heat preservation covering for solar greenhouses, and particularly relates to a self-rolling internal heat preservation system for solar greenhouses. Background Art

[0002] As an important production facility in the field of agricultural production, solar greenhouses have been increasingly widely used. After years of improvement and development, a scientific design structure system has been formed. Due to the vast territory of China, in the northern high-latitude regions, winters are long and cold, the solar altitude is relatively low, and the irradiation time is too short, resulting in a serious shortage of solar energy intake. In order to ensure the normal operation of solar greenhouses at night in winter, cotton quilts are needed to cover and insulate the lighting surface at night, reduce the heat loss inside, and improve the thermal energy utilization efficiency. At present, there are mainly two mechanized control methods for using cotton quilts to cover and insulate solar greenhouses: one is to fix the driving motor on the top of the solar greenhouse, use the pulling rope to drive the winding rod to roll up the cotton quilt upward, and at the same time rely on the gravity of the winding rod and the cotton quilt in the winding state to make the winding rod roll down naturally along the lighting surface to spread the cotton quilt. However, with the development of solar greenhouse technology, large-span solar greenhouses are widely used, and the local inclination slope of the lighting surface of the solar greenhouse is significantly reduced. In production, the phenomenon that the winding rod cannot roll down naturally often occurs, greatly limiting the application of this control method; the other is to connect the driving motor with the winding rod, and directly drive the winding rod to rotate by the driving motor. Forward rotation can roll up the cotton quilt upward, and reverse rotation can spread the cotton quilt downward. Although this control method overcomes the drawback that the natural spreading of the cotton quilt is often blocked, the large weight of the driving motor and its supporting reduction device acting on the winding rod often causes obvious local elastic deformation, and during the rotation and rolling process, the rod body will equivalently form a radial periodic dynamic deformation. This non-equilibrium motion state not only directly affects the stability of the cotton quilt winding and spreading, but also easily causes fatigue damage to the winding rod, affects the operation efficiency of the solar greenhouse, and increases the operation and maintenance cost. Therefore, it is necessary to research and improve the heat preservation covering system of solar greenhouses to solve the existing technical problems. Content of the Utility Model

[0003] The purpose of the utility model is to provide a self-rolling internal heat preservation system for solar greenhouses, improve the heat preservation internal covering process of solar greenhouses, and improve the reliability and stability of the heat preservation covering process control.

[0004] A self-rolling internal covering and heat preservation system for a solar greenhouse, comprising: a track beam, a covering frame, a carrier frame, a motor, a speed reducer, a winding rod, a heat preservation covering, and a counterweight; the covering frames are arranged in parallel with each other longitudinally inside the solar greenhouse to form a covering support frame for the heat preservation covering, one side edge of the heat preservation covering is fixedly connected to the upper end of the covering support frame, and when laid out, it can integrally cover the corresponding area of the covering support frame. The winding rod is correspondingly connected to the opposite side edge of the relatively fixed side of the heat preservation covering and is naturally placed on the support surface of the covering support frame. The track beam has a continuous limit track structure, which is arranged on the longitudinal section of the solar greenhouse and is located between the support surface of the covering support frame and the light-collecting surface of the solar greenhouse; the upper end of the carrier frame has a limit connection structure corresponding to the limit track structure on the track beam and is cooperatively hung on the track beam, so that the carrier frame can move along the defined track of the limit track structure on the track beam. The motor, the speed reducer, and the winding rod are correspondingly arranged and installed on the carrier frame, wherein: the motor is in power transmission cooperation with the input shaft of the speed reducer, the output shaft of the speed reducer is coaxially cooperatively connected with the winding rod, the motor drives the speed reducer to operate, and then the speed reducer drives the winding rod to rotate. The forward and reverse rotation of the winding rod can wind or lay out the heat preservation covering connected to it; in order to balance the overall weight of the carrier frame and the motor and the speed reducer it carries, and to prevent the winding rod from showing a dynamic bending state due to the action of gravity, so that the winding rod always remains straight during the winding and laying out process of the heat preservation covering, and to ensure the high efficiency and reliability of the process control, a counterweight corresponding in weight is connected to the winding rod through a counterweight rope, and the counterweight balances the overall weight of the carrier frame, the motor, and the speed reducer with the fixed pulley supporting the counterweight rope as the fulcrum.

[0005] Preferably, for the above-mentioned self-rolling internal covering and heat preservation system for a solar greenhouse, a lifting ring is fixedly installed on the counterweight rope. The lifting ring has a limit connection structure corresponding to the limit track structure on the track beam and is cooperatively hung on the track beam, so that the lifting ring can move along the defined track of the limit track structure on the track beam in adaptation to the movement of the counterweight rope, maintaining a certain spatial distance between the counterweight rope and the support surface of the covering support frame all the time, and preventing the moving counterweight rope from coming into contact with the heat preservation covering, which may have an adverse effect on the gravity balance effect of the counterweight and cause wear and damage to the heat preservation covering.

[0006] In the described self-rolling internal covering heat preservation system for a solar greenhouse, since both the sunlight-collecting surface of the solar greenhouse and the supporting surface of the covering support shed frame corresponding to its structural shape are arc-shaped curved surfaces, and the arc surface inclination angle at the lower part is greater than that at the upper part, the gravitational effect of the carrier frame, the motor, and the speed reducer on the winding rod in the upper region of the supporting surface of the covering support shed frame is significantly reduced. To further improve the gravitational balance effect of the counterweight, it is preferred that the counterweight adopts a multi-layer block stacking structure, where: the bottom layer block is fixedly connected to the counterweight rope, and each upper layer block respectively sleeved the counterweight rope and is stacked on the bottom layer block in sequence. The widths of the blocks forming the counterweight gradually increase symmetrically outward from bottom to top. At the same time, unloading seats corresponding to the outward expansion widths of each upper layer block are provided. When the counterweight descends with the carrier frame and passes through the corresponding unloading seat, the unloading seat can support the upper layer block corresponding to its set width, so that the upper layer block is unloaded from the bottom layer block, reducing the counterweight of the counterweight. Conversely, when the counterweight ascends with the carrier frame and passes through the corresponding unloading seat, the bottom layer block can lift the upper layer block placed on the unloading seat and load the upper layer block on the bottom layer block to jointly balance the weight of the carrier frame and the overall weight it bears. By unloading or loading the upper layer blocks, the weight balance state between the counterweight and the carrier frame, the motor, and the speed reducer is continuously adjusted dynamically.

[0007] In the described self-rolling internal covering heat preservation system for a solar greenhouse, it is preferred that the track beam is an "I"-shaped track beam composed of an elliptical beam and limiting plates fixedly connected to the upper and lower ends respectively. A hanging joint corresponding to the structure of the track beam is installed on the carrier frame. Two symmetrically arranged track wheels are hinged to the hanging joint. The track wheels are respectively inserted into the grooves on both sides of the "I"-shaped track beam so that the hanging joint is connected to the track beam in a matching manner, and then the carrier frame is hung on the track beam.

[0008] The beneficial effects of the present utility model are as follows: it provides a self - rolling internal covering heat - preservation system for solar greenhouses. A carrier frame placed inside the solar greenhouse carries a motor, a speed reducer and a winding rod. The motor and the speed reducer cooperate to drive the winding rod to wind and unwind the heat - preservation covering material, which can ensure the reliability of the control of winding and unwinding the heat - preservation covering material, effectively improve the production and use efficiency. In particular, a counterweight mechanism for the winding system is provided. By using counterweight blocks to balance the overall weight of the carrier frame, the motor and the speed reducer, the stress distribution state of the winding rod is reasonably adjusted, so that the winding rod always maintains a horizontal spatial state and dynamically balanced stress during the process of winding and spreading the heat - preservation covering material, overcoming the problem in the prior art that the stability of winding and spreading the heat - preservation covering material is not high due to the deformation of the winding rod, improving the smoothness of the operation of the internal heat - preservation covering system. While further ensuring the production and use efficiency, it can also avoid or effectively reduce the tendency of fatigue failure of the winding rod caused by its own stress concentration, improve the process control efficiency, improve the covering and heat - preservation effect, reduce the production application cost, and promote its application in the field of solar greenhouse production, which can significantly enhance the reliability, stability and efficiency of the process control of heat - preservation covering, and meet the requirements of modern agricultural production. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a sectional view of the self - rolling internal covering heat - preservation system for solar greenhouses.

[0010] Figure 2 It is Figure 1 The partial enlarged view at position I in

[0011] Figure 3 It is Figure 2 The partial sectional view along line B - B in

[0012] Figure 4 It is Figure 1 The sectional view along line A - A in

[0013] Figure 5 It is Figure 4 The partial sectional view of the C - C section in

[0014] Figure 6 It is the side view of the self - rolling internal covering heat - preservation system for solar greenhouses.

[0015] Wherein: 1 is the track beam, 2 is the covering frame, 3 is the carrier frame, 4 is the motor, 5 is the speed reducer, 6 is the winding rod, 7 is the heat - preservation covering material, 8 is the counterweight block, 8a is the bottom layer block, 8b is the upper layer block, 9 is the counterweight rope, 10 is the fixed pulley, 11 is the movable pulley, 12 is the unloading seat, 13 is the counterweight frame, 14 is the pulling ring, 15 is the track wheel, 16 is the elliptical beam, 17 is the limiting plate, 18 is the hanging joint, 19 is the heat - preservation covering layer, 20 is the greenhouse structure beam, 21 is the guiding frame, 22 is the track plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Furthermore, the technical solution claimed in the present utility model will be specifically described in combination with specific embodiments and their accompanying drawings.

[0017] A self-rolling inner covering heat preservation system for a solar greenhouse, as Figures 1 to 6 shown, is composed of an orbital beam 1, a covering frame 2, a carrier frame 3, a motor 4, a speed reducer 5, a winding rod 6, a heat preservation covering 7, a counterweight 8, a counterweight rope 9, a fixed pulley 10, a movable pulley 11, a counterweight frame 13, a pulling ring 14, a hanging joint 18, a heat preservation covering layer 19, and a greenhouse structural beam 20.

[0018] The greenhouse structure beams 20 are arranged longitudinally to form the main structure of the solar greenhouse. A daylighting film is covered on the daylighting surface of the solar greenhouse, and the heat-insulating cladding 19 is covered on the heat-insulating wall and the heat-insulating shed surface of the solar greenhouse; the covering frames 2 are arranged in the solar greenhouse to form a covering support shed frame. The heat-insulating covering 7 is a retractable and spreadable cotton quilt, with one side edge fixedly connected to the upper edge of the covering support shed frame, and the other corresponding side edge is connected to the winding rod 6; the track beam 1 is composed of an elliptical beam 16 and limit plates 17 fixedly connected to the upper and lower ends of the elliptical beam 16, with a cross-section in the shape of a "work" character. Hanging joints 18 corresponding to the structure of the track beam 1 are arranged and installed on the carrier frame 3. Two track wheels 15 are hinged to the hanging joints 18. The track wheels 15 are respectively embedded in the grooves on both sides of the "work" character shape, hanging the carrier frame 3 on the track beam 1. Motors 4 and speed reducers 5 are fixedly installed on the carrier frame 3 in a corresponding manner. The motor 4 transmits power to the speed reducer 5 through a belt drive. The output shaft of the speed reducer 5 is coaxially and cooperatively connected to the winding rod 6. The carrier frame 3 is carried on the covering support shed frame by the naturally placed winding rod 6; the counterweight frame 13 is arranged on the outside of the heat-insulating wall of the solar greenhouse. A pulley block and an unloading seat 12 corresponding to the position of the track beam 1 are arranged and installed on the counterweight frame 13. The pulley block consists of two fixed pulleys 10 and one movable pulley. One end of the counterweight rope 9 is connected to the carrier frame 3, and the other end is connected to the counterweight block 8. The counterweight rope 9 is wound around the pulley block. The fixed pulley 10 is used to support the counterweight rope 9, and at the same time, the movable pulley 11 is used to adjust and reduce the movement stroke of the counterweight block 8 relative to the carrier frame 3. The counterweight block 8 is a double-layer stacked structure. The bottom layer block 8a is fixedly connected to the counterweight rope 9. A U-shaped groove through which the fixed pulley 10 can pass is provided on the upper layer block 8b. It is stacked and carried on the bottom layer block 8a, with a width greater than that of the bottom layer block 8a and corresponding to the width of the unloading seat 12. It is unloaded from the bottom layer block 8a by the support of the unloading seat 12. A lifting ring 14 is fixedly installed on the rope body of the counterweight rope 9. The lifting ring 14 is also connected to the track beam 1 by the hanging joint 18, and the lifting ring 14 is correspondingly hung on the track beam 1 to suspend the counterweight rope 9.

[0019] When applying the self-rolling internal covering heat preservation system described in this embodiment in production, when winding the heat preservation covering 7, start the motor 4 to rotate forward. The motor 4 drives the winding rod 6 to rotate through the speed reducer 5 to wind the heat preservation covering 7 spread on the covering support shed frame. As the heat preservation covering 7 is wound and stored, the heat preservation covering 7 will pull the carrier 3 to move and lift along the track beam 1 through the winding rod 6. During the moving and lifting process, the counterweight 8 dynamically balances the overall weight of the carrier 3 and the motor 4 and the speed reducer 5 carried thereon, so that the winding rod 6 always maintains a dynamically straight state, keeps the winding of the heat preservation covering 7 stable and uniform, reduces the movement resistance of the winding rod 6 and its own stress concentration. In the front area of the covering support shed frame, due to the large inclination angle of the shed frame surface, the winding rod 6 is subjected to a large overall gravity of the carrier 3. Therefore, in the front area, the bottom layer block 8a and the upper layer block 8b constituting the counterweight 8 are jointly used for counterweight balance. In the rear area of the covering support shed frame, since the inclination angle of the shed frame surface gradually decreases, it is necessary to adjust and reduce the counterweight of the counterweight 8. When the carrier 3 moves and lifts to the set adjustment height, the counterweight 8 correspondingly descends to the set height of the unloading seat 12. When the counterweight 8 passes through the unloading seat 12, the unloading seat 12 can correspondingly lift the upper layer block 8b and unload the upper layer block 8b from the bottom layer block 8a, and only use the bottom layer block 8a to balance the gravity of the carrier 3 in the rear area of the covering support shed frame. By adjusting the counterweight, the stability and reliability of the balance of the carrier 3 and its carrying weight are ensured until the heat preservation covering 7 is wound and stored to the upper end of the covering support shed frame, and at the same time, the carrier 3 and the motor 4 and the speed reducer 5 carried thereon also move to the top of the track beam 1;When spreading the heat-insulating covering 7, start the motor 4 to rotate it in the reverse direction. The motor 4 drives the winding rod 6 to rotate through the speed reducer 5 to spread the heat-insulating covering 7 wound on the winding rod 6. As the heat-insulating covering 7 is released and spread, the winding rod 6 driven by the speed reducer 5 will roll down naturally along the covering support shed frame. During the rolling-down process, the counterweight block 8 dynamically balances the overall weight of the carrier 3 and the load it bears, so that the winding rod 6 always maintains a dynamically straight state. In the rear area of the covering support shed frame, the bottom layer block 8a is used for counterweight balance alone. When the carrier 3 rolls down to the set adjustment height, the bottom layer block 8a correspondingly rises to the set height of the unloading seat 12. When the bottom layer block 8a passes through the unloading seat 12, the bottom layer block 8a automatically lifts the upper layer block 8b placed on the unloading seat 12 and loads it on the bottom layer block 8a to jointly counterweight balance the overall weight of the carrier 3 and the load it bears until the heat-insulating covering 7 is spread and covered on the covering support shed frame. At the same time, the carrier 3 and the motor 4 and the speed reducer 5 it carries also move to the lower end of the track beam 1. Since the winding rod 6 always maintains a horizontal spatial state and dynamically balanced force during the process of winding and spreading the heat-insulating covering 7, it can effectively improve the smoothness of the winding and spreading process, reduce the tendency of fatigue failure of the winding rod 6, improve the process control efficiency, improve the covering and heat-insulating effect, and reduce the production application cost.

Claims

1. A self-rolling inner covering insulation system for a solar greenhouse, characterized in that: include: A track beam (1), a covering frame (2), a carrier frame (3), an electric motor (4), a reducer (5), a winding rod (6), a heat-insulating cover (7) and a counterweight (8); the covering frame (2) is arranged in parallel with each other along the longitudinal direction inside a solar greenhouse to form a covering support scaffolding for the heat-insulating cover (7); one side edge of the heat-insulating cover (7) is fixedly connected to the upper end of the covering support scaffolding and can be spread out to cover the corresponding area of ​​the covering support scaffolding as a whole; the winding rod (6) is correspondingly connected to the other side edge of the relatively fixed side of the heat-insulating cover (7) and is naturally placed on the support surface of the covering support scaffolding; the track beam (1) has a continuous limited track structure, which is arranged on the longitudinal section of the solar greenhouse and is arranged between the support surface of the covering support scaffolding and the lighting surface of the solar greenhouse; the upper end of the carrier frame (3) has a There is a limit connection structure corresponding to the limit track structure on the track beam (1) and is hung on the track beam (1) so that the carrier (3) can move along the limited track of the limit track structure on the track beam (1). The motor (4), the reducer (5) and the winding rod (6) are arranged corresponding to each other and connected and installed on the carrier (3), wherein: the motor (4) and the input shaft of the reducer (5) establish power transmission cooperation, and the output shaft of the reducer (5) is coaxially connected with the winding rod (6); the winding rod (6) is connected to the counterweight block (8) with a corresponding weight through a counterweight rope (9), and the counterweight block (8) uses a fixed pulley (10) supporting the counterweight rope (9) as a fulcrum to balance the overall weight of the carrier (3), the motor (4) and the reducer (5).

2. A self-rolling inner covering insulation system for a solar greenhouse as claimed in claim 1, characterized in that: A pull ring (14) is fixedly mounted on the counterweight rope (9), and the pull ring (14) has a limit connection structure corresponding to the limit track structure on the track beam (1) and is cooperatively hung on the track beam (1), so that the pull ring (14) can adapt to the movement of the counterweight rope (9) and move along the limited track of the limit track structure on the track beam (1), thereby maintaining a certain spatial distance between the counterweight rope (9) and the supporting surface of the covering support scaffolding.

3. A self-rolling inner covering insulation system for a solar greenhouse as claimed in claim 1 or 2, characterized in that: The counterweight block (8) adopts a multi-layer stacking structure, wherein: the bottom layer block (8a) is fixedly connected to the counterweight rope (9), and each upper layer block (8b) is respectively looped around the counterweight rope (9) and is stacked and carried on the bottom layer block (8a) in sequence. The width of each layer block constituting the counterweight block (8) increases symmetrically from bottom to top. At the same time, unloading seats (12) corresponding to the outward width of each upper layer block (8b) are provided. When the counterweight block (8) is lowered along with the carrier frame (3) and passes through the corresponding unloading seat ( When the unloading seat (12) is moved upward along the unloading seat (12), the unloading seat (12) can support the upper layer block (8b) corresponding to the set width thereof, so that the upper layer block (8b) is unloaded from the bottom layer block (8a), thereby reducing the counterweight weight of the counterweight block (8); conversely, when the counterweight block (8) rises with the carrier frame (3) and passes through the corresponding unloading seat (12), the bottom layer block (8a) can lift the upper layer block (8b) placed on the unloading seat (12), thereby loading the upper layer block (8b) onto the bottom layer block (8a).

4. A self-rolling inner covering insulation system for a solar greenhouse as claimed in claim 3, characterized in that: The track beam (1) is an "I"-shaped track beam composed of an elliptical beam (16) and limit plates (17) respectively fixedly connected to the upper and lower ends. A hanging joint (18) having a structure corresponding to the track beam (1) is arranged on the carrier (3). Two track wheels (15) symmetrically arranged are hingedly connected to the hanging joint (18). The track wheels (15) are respectively correspondingly embedded in grooves on both sides of the "I"-shaped track beam so that the hanging joint (18) is matched and connected to the track beam (1), thereby hanging the carrier (3) on the track beam (1).

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