Greenhouse precast foundation

Abstract

The present application relates to a prefabricated foundation for mounting a greenhouse and a hothouse. The present application provides a prefabricated greenhouse foundation made of hollow polycarbonate beams, the beam body is provided with horizontal and vertical partitions inside, forming longitudinal cavities; the two side walls 4, 5 of the beam body are of different heights, and are provided with longitudinal stepped notches 6 for mounting the greenhouse frame; at the corners of the opposite sides of the stepped notches 6, longitudinal cavities 7 are formed by the vertical and horizontal partitions 1, 2, which are designed to be capable of mounting standard profiled pipes; the beam body is further provided with internal partitions 3 arranged diagonally along the full length. The present application is characterized by light weight, easy assembly without additional fastening elements, high reliability in use, improved energy efficiency of the greenhouse, and diversification of the mounting method according to the greenhouse frame structure and its intended use.

Description

Technical Field

[0001] This application relates to prefabricated foundations (bases) for installing greenhouses and hothouses. Background Technology

[0002] Timber, metal profiles, or galvanized profiles are the most commonly used materials for greenhouse foundations.

[0003] Constructing a foundation using these materials is a labor-intensive process, requiring specialized connecting and fastening components (corner fittings, brackets) to assemble the foundation members. The materials used are also quite heavy, and the foundation members themselves require regular treatment to prevent metal corrosion (if they are made of metal tubing) or wood rot (if they are made of wood). Furthermore, if the wood is not adequately pre-treated (drying, sanding, impregnating, etc.), it may warp due to weather conditions during use, or the wood itself may have defects such as knots, leading to gaps at the connection between the greenhouse frame and the wooden beams, causing heat loss from the greenhouse. When using a metal base as the greenhouse foundation, the connection between the greenhouse metal frame and the metal base will form a cold bridge along the entire perimeter of the greenhouse. This cold bridge effectively acts as a heat exchanger, accelerating the loss of heat from inside the greenhouse to the outside.

[0004] There is a prefabricated greenhouse foundation made of hollow polyvinyl chloride (PVC) beams with internal horizontal and vertical partitions along their entire length, which form longitudinal chambers (https: / / parniki-sib.ru / fundament-iz-pvh-brusa).

[0005] Compared to timber structures, PVC beam foundations do not rot in the soil, do not crack during storage, and do not deform due to external factors; compared to metal structures, they are less prone to corrosion. However, PVC beams are relatively heavy, comparable to the metal profiles used to build greenhouse foundations, but they possess the required strength, and internal partitions provide the necessary rigidity.

[0006] Meanwhile, when using PVC beams to build the foundation, special connecting and fastening components (corner fittings, brackets, plates) are needed to connect the various parts together, which slows down and complicates the assembly process of the greenhouse foundation. Utility Model Content

[0007] The purpose of this application is to provide a prefabricated greenhouse foundation that is lightweight, can be easily assembled without additional fastening components, improves the energy efficiency of the greenhouse, and allows for diverse installation methods depending on the greenhouse frame structure and its intended use.

[0008] The technical advantages of this application include: enabling the assembly of foundation components without the need for dedicated fastening elements; improving the sealing performance at the connection between the greenhouse frame and the polymer beam; and enabling diversified foundation installation methods.

[0009] The technical effect is achieved in the following way: the prefabricated foundation of the greenhouse is made of hollow polymer beams, and the interior of the polymer beams is provided with internal horizontal and vertical partitions along its entire length to form longitudinal chambers; the beams are made of polycarbonate material, with different heights on both sides of the beams, and are provided with longitudinal stepped cutouts for installing the greenhouse frame; at the corners on opposite sides of the stepped cutouts, vertical and horizontal partitions form longitudinal chambers, which are designed to install standard profile pipes; the interior of the beams is also provided with internal partitions arranged diagonally along its entire length.

[0010] Using polycarbonate beams can reduce the weight of the greenhouse foundation by 8-10 times compared to PVC beams, while still being able to support the weight of the greenhouse metal frame, polymer roof, and snow.

[0011] The hollow honeycomb structure of honeycomb polycarbonate beams can improve the energy efficiency of greenhouses due to their multi-chamber characteristics, and their light weight makes them easy for end users to install.

[0012] The different heights of the two side walls of the beam allow for diverse installation methods for the polycarbonate hollow beam (either placing the shorter side wall on the ground or vice versa), which can increase the usable space inside the greenhouse or create an additional horizontal plane along the inner perimeter of the greenhouse for installing plant lighting, heating, or irrigation systems.

[0013] The longitudinal stepped cuts on the beams are used to install the greenhouse frame (the frame is usually made of 20×20 mm standard metal profile tubes), which can achieve a more sealed double-sided connection between the greenhouse metal frame and the beams, thereby improving the stability of the overall structure and reducing heat loss inside the greenhouse.

[0014] At the corners on opposite sides of the stepped cut, vertical and horizontal partitions form a chamber for installing standard profiled tubes. For example, 20×20 mm metal profiled tubes used to build greenhouse frames can be inserted into this chamber to splice multiple beam sections without the need for additional fastening components. This simplifies the installation process of the greenhouse base and allows for the construction of greenhouse supports of any size.

[0015] The internal partitions arranged diagonally along the entire length of the polycarbonate hollow beam ensure the beam's ability to resist lateral loads.

[0016] The interior of the polycarbonate hollow beam is equipped with vertical and horizontal partitions along its entire length, ensuring that the beam can withstand loads in any installation method (vertical or horizontal). Attached Figure Description

[0017] This application is illustrated with reference to the accompanying drawings: Figure 1 This is a cross-sectional view of the beam of the precast greenhouse foundation of this application; Figure 2 This is a three-dimensional schematic diagram of the beam. Figure 3 This is a three-dimensional schematic diagram of the corner connection between two beam sections. Detailed Implementation

[0018] The prefabricated foundation of the greenhouse is made of polycarbonate hollow beams, with horizontal partitions 1, vertical partitions 2, and diagonally arranged partitions 3 inside the beams. All partitions 1, 2, and 3 are set along the entire length of the beams, forming longitudinal chambers inside the beams. The two side walls 4 and 5 of the beams have different heights and are provided with longitudinal stepped cutouts 6 for installing the greenhouse frame. The corners on opposite sides of the stepped cutouts 6 form longitudinal chambers 7, which are mainly square in cross-section and designed for installing standard profiled pipes (such as the pipes used to assemble the greenhouse metal frame).

[0019] The assembly steps for the polycarbonate beam foundation are as follows: Prepare a flat area where the greenhouse foundation will be installed. Then, dig a groove in the prepared area that matches the height of the polycarbonate hollow beam (a groove depth of 4 cm is recommended when placing the beam vertically; a groove depth of 2 cm is recommended when placing the beam horizontally). Choose the placement method (vertical or horizontal) of the beam under the greenhouse based on the greenhouse structure and the tasks to be addressed. For example, vertically placed polycarbonate hollow beams are ideal for film greenhouses and greenhouses made of 4-6 mm thin polycarbonate material, increasing the usable space inside the greenhouse. Horizontal placement of polycarbonate hollow beams is ideal for greenhouses made of 8-10 mm thick polycarbonate material because it can withstand greater loads (up to 1000 kg per linear meter), and the increased horizontal plane of the beam creates additional space around the greenhouse perimeter for installing strip lighting, plant heating, and / or irrigation systems.

[0020] Then, accurately measure the lower dimensions of the greenhouse metal frame that will be installed on the polycarbonate beam frame, and make 4 polycarbonate beam blanks according to the greenhouse frame dimensions (if the required length is required, standard metal tubes - such as 20×20 mm specifications - can be inserted into the cavity 7 of each beam to achieve splicing of multiple straight beams).

[0021] Next, the corners of the beam are cut at 45 degrees, fitted, and then connected to ensure that the stepped cut 6 on the polycarbonate beam is on the outside.

[0022] Next, all the corners of the polycarbonate beams are butted together and secured from the outside with regular tape or masking tape. This is sufficient for transporting and installing the plastic greenhouse foundation into the soil. The reliability of the polycarbonate beam corner connections will be ensured by subsequently securing them to the greenhouse's metal base with self-tapping screws. No additional corner splicing fasteners are needed, as the greenhouse's rigid frame, composed of profiled tubing, itself serves as the corner fastener, installed above the stepped cutouts of the polycarbonate beams to secure the beam corners together from the outside, preventing them from separating.

[0023] Place the assembled polycarbonate frame into the excavated soil groove, ensuring accurate and stable positioning. Install the greenhouse metal frame into the stepped cutout 6 of the beam, ensuring precise fit between the metal profile tubes of the greenhouse frame and the corresponding sides of the polycarbonate beam cutout 6.

[0024] The greenhouse rigid frame placed on the stepped cutout 6 acts as a metal frame, wrapping polycarbonate beams around the perimeter; since the frame is a rectangular structure, each corner connection point of the metal profile tube becomes a sturdy corner bracket, which can fix the two beam sections without additional fastening elements.

[0025] Finally, use self-tapping screws to fix the greenhouse metal frame to the polycarbonate frame to ensure a reliable connection and prevent structural displacement during use.

[0026] Experimental, measurement, and testing results show that the strength margin of the prefabricated greenhouse foundation described in this application is 5-8 times, and each linear meter can withstand a load of up to 1000 kg.

[0027] Therefore, this application saves time and material resources: there is no need to build a foundation in advance, and the straight sections of the foundation can be spliced ​​by inserting the waste of the greenhouse metal frame into the corresponding chambers of the polycarbonate hollow beams without the need for additional fastening components, thereby speeding up and simplifying the installation process of greenhouses and hothouses, and requiring no professional installation knowledge.

[0028] This application also improves the energy efficiency of the greenhouse. The hollow cavity structure of the polycarbonate beams reduces heat loss within the greenhouse, while the improved sealing at the connection between the greenhouse frame and the polycarbonate beams (the lower and side walls of the metal profile tubes of the greenhouse frame simultaneously fit the corresponding sides of the stepped cuts in the polycarbonate beams) further reduces heat loss.

[0029] In addition, the different heights of the two side walls of the polycarbonate beams increase the versatility of greenhouse space utilization.

Claims

1. A prefabricated greenhouse foundation, made of hollow polymer beams, with horizontal and vertical partitions inside the beams forming longitudinal chambers, characterized in that: The beam is made of polycarbonate material, with different heights on both sides and longitudinal stepped cutouts for installing the greenhouse frame. At the corners on opposite sides of the stepped cutouts, vertical and horizontal partitions form a longitudinal chamber, which is designed to accommodate standard profile tubes. The beam also has internal partitions arranged diagonally along its entire length.

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