Daylight greenhouse frame-type earth wall

Abstract

A sunlight greenhouse frame type soil wall relates to the technical field of greenhouse, which comprises a support frame, two rotating frames are hinged on the top of the support frame, side support plates are fixed on the opposite ends of the support frame, fixed plates are fixed on the opposite ends of the rotating frames, a plurality of rotating cylinders are arranged on the top of the support frame, a plurality of connecting columns are hinged on the outer wall of the rotating frame, a limiting circular plate is arranged in the rotating cylinder and is in frictional contact with the inner wall of the rotating cylinder, a connecting rod is fixed on the end of the limiting circular plate, one end of the connecting rod penetrates through the rotating cylinder and is screwed with the connecting column, the connecting rod is in frictional contact with the rotating cylinder, the diameter of the connecting rod is smaller than the diameter of the limiting circular plate, a compression spring is arranged in the rotating cylinder, one end of the compression spring is in abutment with the limiting circular plate, and the other end of the compression spring is limited in the rotating cylinder, and a humidifying assembly is arranged between the two rotating frames. The present application solves the problem of poor sealing and heat preservation effect caused by easy cracking of the existing frame type soil wall.

Description

Technical Field

[0001] This invention relates to the field of greenhouse technology, specifically to a frame-type earthen wall for a solar greenhouse. Background Technology

[0002] A framed earthen wall greenhouse is a type of greenhouse construction that combines traditional earthen walls with modern steel frame structures. It primarily consists of a steel frame and rammed earth. The steel frame is typically welded from sheet metal, forming a stable supporting skeleton that ensures the overall strength and wind and snow resistance of the earthen wall. A steel mesh is laid inside the frame to enhance structural stability, and geotextile is used to prevent soil erosion. The wall is then filled with soil and gravel and compacted. This structure retains the advantages of traditional earthen walls, such as heat storage, insulation, energy conservation, and environmental friendliness, while the steel frame improves the greenhouse's durability and space utilization, making it more suitable for the winter agricultural production needs of cold northern regions.

[0003] The existing frame-type earthen walls of solar greenhouses have gradually revealed their shortcomings during use, mainly in the following aspects: First, the thermal expansion coefficients of metal and rammed earth differ greatly. The expansion coefficient of metal is usually 2-4 times that of soil. Therefore, under the same temperature rise conditions, the expansion and contraction of metal is much greater than that of soil. During the day when the temperature rises, the steel frame expands rapidly due to heat, exerting a pushing effect on the earthen wall. However, due to its poor thermal conductivity, the earthen wall's temperature rises later and its expansion is smaller. Therefore, the junction bears compressive stress. At night when the temperature drops, the steel frame contracts rapidly, while the earthen wall, due to its poor thermal conductivity, maintains a higher temperature and contracts later. This causes gaps to form at the junction, which are then filled by the surrounding soil. Under the daily temperature cycle, the repeated compression between the metal and the soil causes the soil to break locally, creating cracks that gradually expand and ultimately destroy the integrity and airtightness of the structure.

[0004] Secondly, under the action of wet and dry cycles, rammed earth walls will generate shrinkage stress due to water evaporation. When the shrinkage stress exceeds the tensile strength of the soil, cracks will appear. These cracks not only destroy the structural integrity of the wall and form through cracks that reduce the load-bearing capacity, but also significantly reduce its thermal insulation performance (cracks become shortcuts for heat conduction). This greatly reduces the heat storage and insulation function that was originally achieved by the dense soil structure, and ultimately seriously affects the durability and thermal insulation effect of the wall.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a frame-type earthen wall for a solar greenhouse. This frame-type earthen wall employs a buffer design, which automatically adjusts the metal frame according to changes in day and night temperature. During the day when the temperature rises, the compressive force generated by the metal frame is absorbed by the buffer device. During the night when the temperature drops, the buffer device releases the stored pressure, pushing the metal frame back to its original position. Therefore, the metal frame always maintains a tight fit with the rammed earth wall, effectively preventing soil cracking and ensuring airtightness. This frame-type earthen wall can effectively regulate the humidity balance inside the rammed earth, preventing the wall from cracking due to moisture evaporation and ensuring the stable heat storage and insulation effect of the wall.

[0007] To address the above problems, the present invention provides the following technical solution: A frame-type earthen wall for a solar greenhouse includes a supporting frame. Two rotating frames are hinged to the top of the supporting frame. Side support plates are fixed to opposite ends of the supporting frame, and fixing plates are fixed to opposite ends of the rotating frames. Several rotating cylinders are rotatably mounted on the top of the supporting frame. Several connecting columns are hinged to the outer walls of the rotating frames. A limiting circular plate is provided inside each rotating cylinder, rubbing against its inner wall. A connecting rod is fixed to the end of the limiting circular plate. One end of the connecting rod passes through the rotating cylinder and is threadedly connected to a connecting column. The connecting rod rubs against the rotating cylinder, and its diameter is smaller than the diameter of the limiting circular plate. A compression spring is provided inside each rotating cylinder, with one end abutting against the limiting circular plate and the other end confined inside the rotating cylinder. A humidification assembly is provided between the two rotating frames.

[0008] As an optimized solution, the humidification component includes several horizontally arranged drain pipes, the side support plate has several through-holes at its end, both ends of the drain pipe have fixed threaded sections, the fixed threaded sections at both ends of the drain pipe pass through the mounting holes on the two side support plates respectively and are fitted with stop nuts that are threadedly connected to them, one end of the drain pipe is sealed, and the outer wall of the drain pipe has several through holes.

[0009] As an optimized solution, the end of the fixed plate is provided with several mounting grooves, and rollers are provided in the mounting grooves. Both ends of the rollers are rotatably connected to the fixed plate, and a portion of the rollers is always located outside the mounting grooves and rolls and rubs against the side support plate.

[0010] As an optimized solution, two through-hole fixed tubes are fixedly provided on the outer wall of the rotating cylinder. One end of the fixed tube is flush with the inner wall of the rotating cylinder. Mounting plates are fixedly provided on both sides of the rotating cylinder. One of the mounting plates has a limiting bolt at its end. The threaded end of the limiting bolt passes through the two mounting plates and is fitted with a limiting nut that is threadedly connected to it. The limiting bolt is located inside the fixed tube and is in frictional contact with the fixed tube.

[0011] As an optimized solution, the rotating cylinder is provided with a sliding circular plate that is slidably connected to its inner wall. The compression spring abuts against the sliding circular plate, and the sliding circular plate is restricted inside the rotating cylinder by a limiting bolt.

[0012] As an optimized solution, the mounting plate is fixedly connected to the support frame.

[0013] As an optimized solution, one end of the connecting rod is provided with an installation threaded section, which extends into the connecting column and is threadedly connected to the connecting column. The outer wall of the connecting rod is provided with a bolt head structure.

[0014] As an optimized solution, both the support frame and the rotating frame are made of welded metal sheets.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When constructing a frame-type earthen wall, firstly, steel mesh and geotextile are laid to seal the open areas of the supporting frame, rotating frame, etc. Then, the supporting frame is placed inside the poured concrete foundation and fixed. Next, soil is filled into the entire frame and compacted. Afterward, the supporting frame is buried within the concrete foundation. Once all the soil is filled, the rotating frame contacts the compacted soil. At this point, the sliding circular plate contacts the limiting bolt, and the compression spring is compressed. During the day when the temperature rises, the rotating frame expands rapidly due to heat, generating pressure at the interface between the rotating frame and the compacted soil, which pushes the rotating frame to rotate outward. The compression spring is further compressed, and the pressure generated by the rotating frame is absorbed by the compression spring. At night when the temperature drops, the rotating frame contracts rapidly, and the compression spring releases the stored pressure. The rotating frame is reset, ensuring it remains in contact with the upper rammed earth when the temperature changes. The upper layer of this frame-type earth wall features a buffer design that automatically adjusts to diurnal temperature variations. During the day, as the temperature rises, the compressive force generated by the rotating frame is absorbed by the compression spring; at night, as the temperature drops, the compression spring releases the stored pressure, pushing the rotating frame back to its original position. This ensures the rotating frame remains tightly fitted to the upper rammed earth, effectively preventing cracking and guaranteeing the airtightness of the upper layer. The lower rammed earth and the supporting frame are simultaneously embedded within the concrete foundation. The expansion and contraction of the supporting frame do not affect the upper rammed earth or the overall airtightness of the earth wall. Therefore, this frame-type earth wall exhibits excellent airtightness. 2. The fixed plate uses rollers to contact the side support plate, and the friction mode between the fixed plate and the side support plate is changed from sliding friction to rolling friction, which greatly reduces the frictional resistance between the fixed plate and the side support plate and ensures that the rotating frame can rotate normally; 3. When the internal humidity of the rammed earth is low, connect the drainage pipe to the external water source. Water will drain out through the through holes on the drainage pipe and moisten the rammed earth, thereby keeping the internal humidity of the rammed earth within the normal range. This frame-type earth wall can effectively regulate the humidity balance inside the rammed earth, avoid wall cracking due to water evaporation, and ensure the stable heat storage and insulation effect of the wall. 4. The two ends of the drain pipe can also serve as a support for the side plates, further improving the compressive strength of the side support plates and enhancing their practicality. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the supporting frame of the present invention; Figure 3 This is a schematic diagram of the rotating frame of the present invention; Figure 4 This is a schematic diagram of the rotating cylinder and connecting column of the present invention; Figure 5 This is a schematic diagram of the internal structure of the rotating cylinder and connecting column of the present invention; Figure 6 This is a schematic diagram of the humidification component of the present invention; Figure 7 This is a schematic diagram of the drainage pipe of the present invention; Figure 8 This is a schematic diagram of the roller structure of the present invention.

[0018] In the diagram: 1-Support frame; 2-Fixing plate; 3-Side support plate; 4-Rotating frame; 5-Mounting plate; 6-Humidifying component; 7-Connecting column; 8-Connecting rod; 9-Rotating cylinder; 10-Installation threaded section; 11-Limiting circular plate; 12-Sliding circular plate; 13-Limiting nut; 14-Fixing pipe; 15-Limiting bolt; 16-Compression spring; 17-Bolt head structure; 18-Roller; 19-Installation groove; 20-Drainage pipe; 21-Installation hole; 22-Fixing threaded section; 23-Stop nut; 24-Through hole. Detailed Implementation

[0019] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0020] like Figures 1 to 8 As shown, a solar greenhouse frame-type earthen wall includes a supporting frame 1. Two rotating frames 4 are hinged to the top of the supporting frame 1. Side support plates 3 are fixed to the opposite ends of the supporting frame 1. Fixed plates 2 are fixed to the opposite ends of the rotating frames 4. Several rotating cylinders 9 are provided on the top of the supporting frame 1. Several connecting columns 7 are hinged to the outer wall of the rotating frames 4. A limiting circular plate 11 is provided inside the rotating cylinder 9 and rubs against its inner wall. A connecting rod 8 is fixed to the end of the limiting circular plate 11. One end of the connecting rod 8 passes through the rotating cylinder 9 and is threaded to the connecting column 7. The connecting rod 8 rubs against the rotating cylinder 9. The diameter of the connecting rod 8 is smaller than the diameter of the limiting circular plate 11. A compression spring 16 is provided inside the rotating cylinder 9. One end of the compression spring 16 abuts against the limiting circular plate 11, and the other end of the compression spring 16 is restricted inside the rotating cylinder 9. A humidification component 6 is provided between the two rotating frames 4.

[0021] The humidification component 6 includes several horizontally arranged drain pipes 20. The side support plate 3 has several through-holes 21 at its end. Both ends of the drain pipe 20 are provided with fixed threaded sections 22. The fixed threaded sections 22 at both ends of the drain pipe 20 pass through the two mounting holes 21 on the two side support plates 3 respectively and are fitted with stop nuts 23 that are threadedly connected to them. One end of the drain pipe 20 is sealed. The outer wall of the drain pipe 20 is provided with several through holes 24.

[0022] The fixed plate 2 has several mounting grooves 19 at its end. Rollers 18 are provided in the mounting grooves 19. Both ends of the rollers 18 are rotatably connected to the fixed plate 2. A portion of the rollers 18 is always outside the mounting grooves 19 and rolls and rubs against the side support plate 3.

[0023] Two through-hole fixed tubes 14 are fixedly provided on the outer wall of the rotating cylinder 9. One end of the fixed tube 14 is flush with the inner wall of the rotating cylinder 9. Mounting plates 5 are fixedly provided on both sides of the rotating cylinder 9. One end of the mounting plate 5 is provided with a limiting bolt 15. The threaded end of the limiting bolt 15 passes through the two mounting plates 5 and is fitted with a limiting nut 13 that is threadedly connected to it. The limiting bolt 15 is located inside the fixed tube 14 and is in frictional contact with the fixed tube 14.

[0024] The rotating cylinder 9 is provided with a sliding circular plate 12 that is slidably connected to its inner wall. The compression spring 16 abuts against the sliding circular plate 12, and the sliding circular plate 12 is restricted inside the rotating cylinder 9 by the limiting bolt 15.

[0025] Mounting plate 5 is fixedly connected to support frame 1.

[0026] One end of the connecting rod 8 is provided with a threaded section 10, which extends into the connecting post 7 and is threadedly connected to the connecting post 7. The outer wall of the connecting rod 8 is provided with a bolt head structure 17.

[0027] Both the support frame 1 and the rotating frame 4 are made of welded metal sheets.

[0028] The working principle of this device is as follows: When constructing a frame-type earthen wall, firstly, steel mesh and geotextile are laid to seal the open areas of the supporting frame 1, rotating frame 4, etc. Then, the supporting frame 1 is placed inside the poured concrete foundation and fixed. Next, soil is filled into the entire frame and compacted. After the supporting frame 1 is completely buried in the concrete foundation, the rotating frame 4 comes into contact with the compacted soil. At this time, the sliding circular plate 12 is in contact with the limiting bolt 15, and the compression spring 16 is in a compressed state. During the day when the temperature rises, the rotating frame 4 expands rapidly due to heat, generating extrusion force at the interface between the rotating frame 4 and the compacted soil, thus pushing the rotating frame 4 to rotate outward. The compression spring 16 is further compressed, and the extrusion force generated by the rotating frame 4 is absorbed by the compression spring 16. At night when the temperature drops, the rotating frame 4 contracts rapidly, and the compression spring 16 releases the stored pressure. The force is released, which in turn pushes the rotating frame 4 to return to its original position. Therefore, when the temperature changes, the rotating frame 4 always remains in contact with the upper rammed earth. The upper layer of this frame-type earth wall adopts a buffer design, which can automatically adjust the rotating frame 4 when the temperature difference between day and night changes. When the temperature rises during the day, the compressive force generated by the rotating frame 4 is absorbed by the compression spring 16. When the temperature drops at night, the compression spring 16 releases the stored pressure and pushes the rotating frame 4 back to its original position. Therefore, the rotating frame 4 always keeps in close contact with the upper rammed earth, which effectively prevents the upper rammed earth from cracking and ensures the sealing of the upper layer of the earth wall. The lower rammed earth and the supporting frame 1 are buried in the concrete foundation at the same time. The expansion and contraction of the supporting frame 1 does not affect the lower rammed earth, nor does it affect the overall sealing of the earth wall. Therefore, this frame-type earth wall has excellent sealing performance. The fixed plate 2 uses rollers 18 to contact the side support plate 3. The friction mode between the fixed plate 2 and the side support plate 3 changes from sliding friction to rolling friction, which greatly reduces the frictional resistance between the fixed plate 2 and the side support plate 3, ensuring that the rotating frame 4 can rotate normally. When the internal humidity of the rammed earth is low, the drainage pipe 20 is connected to the external water source. Water is discharged through the through hole 24 on the drainage pipe 20 and moistens the rammed earth, thereby keeping the internal humidity of the rammed earth within the normal range. This frame-type earth wall can effectively regulate the humidity balance inside the rammed earth, avoid the wall from cracking due to water evaporation, and ensure the stable heat storage and insulation effect of the wall. The two ends of the drain pipe 20 can also serve to pull the side support plate 3, further improving the compressive strength of the side support plate 3 and enhancing its practicality.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A type of earthen wall for a solar greenhouse frame, characterized in that: The system includes a support frame (1), with two rotating frames (4) hinged to the top of the support frame (1). Side support plates (3) are fixed to the opposite ends of the support frame (1), and fixing plates (2) are fixed to the opposite ends of the rotating frames (4). The top of the support frame (1) is provided with several rotating cylinders (9) that are rotatably mounted. Several connecting columns (7) are hinged to the outer wall of the rotating frames (4). A limiting circular plate (11) is provided inside the rotating cylinder (9) and rubs against its inner wall. The end of the limiting circular plate (11) is fixed with… A connecting rod (8) is provided, one end of which passes through the rotating cylinder (9) and is threadedly connected to the connecting column (7). The connecting rod (8) is in frictional contact with the rotating cylinder (9). The diameter of the connecting rod (8) is smaller than the diameter of the limiting circular plate (11). A compression spring (16) is provided inside the rotating cylinder (9). One end of the compression spring (16) abuts against the limiting circular plate (11), and the other end of the compression spring (16) is restricted inside the rotating cylinder (9). A humidifying component (6) is provided between the two rotating frames (4). The humidification component (6) includes several horizontally arranged drain pipes (20), and the side support plate (3) has several through-holes (21) at its end. Both ends of the drain pipe (20) are provided with fixed threaded sections (22). The fixed threaded sections (22) at both ends of the drain pipe (20) pass through the mounting holes (21) on the two side support plates (3) respectively and are fitted with stop nuts (23) that are threadedly connected to them. One end of the drain pipe (20) is sealed. The outer wall of the drain pipe (20) is provided with several through holes (24). The fixed plate (2) has several mounting grooves (19) at its end. Rollers (18) are provided in the mounting grooves (19). Both ends of the rollers (18) are rotatably connected to the fixed plate (2). A portion of the rollers (18) is always outside the mounting grooves (19) and rolls and rubs against the side support plate (3). Two through-hole fixed tubes (14) are fixedly provided on the outer wall of the rotating cylinder (9). One end of the fixed tube (14) is flush with the inner wall of the rotating cylinder (9). Mounting plates (5) are fixedly provided on both sides of the rotating cylinder (9). One end of the mounting plate (5) is provided with a limiting bolt (15). The threaded end of the limiting bolt (15) passes through the two mounting plates (5) and is fitted with a limiting nut (13) that is threadedly connected to it. The limiting bolt (15) is located inside the fixed tube (14) and is in frictional contact with the fixed tube (14).

2. The frame-type earthen wall for a solar greenhouse according to claim 1, characterized in that: The rotating cylinder (9) is provided with a sliding circular plate (12) that is slidably connected to its inner wall. The compression spring (16) abuts against the sliding circular plate (12). The sliding circular plate (12) is restricted inside the rotating cylinder (9) by a limiting bolt (15).

3. The frame-type earthen wall for a solar greenhouse according to claim 1, characterized in that: The mounting plate (5) is fixedly connected to the support frame (1).

4. The frame-type earthen wall for a solar greenhouse according to claim 1, characterized in that: One end of the connecting rod (8) is provided with an installation thread section (10), the installation thread section (10) extends into the connecting column (7) and is threadedly connected to the connecting column (7), and the outer wall of the connecting rod (8) is provided with a bolt head structure (17).

5. The frame-type earthen wall for a solar greenhouse according to claim 1, characterized in that: Both the support frame (1) and the rotating frame (4) are made of welded metal plates.

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