Concrete regular tetrahedral steel form

Abstract

The utility model relates to concrete regular tetrahedron steel formwork is equipped with a plurality of mould units and stereoscopic frame, and the mould unit is equipped with the cavity surrounded by three triangle side plates, and the cavity is regular tetrahedron, and the top is open, and a plurality of mould units are arranged into a row or multiple rows, and the adjacent mould units of the same row are in the plane attitude of each other upside down, and the top opening edges are mutually attached and fixedly connected together, and one side or both sides of the frame are equipped with half -arc structure. Adopting the utility model can greatly simplify the construction process of the preparation of concrete regular tetrahedron, and the production efficiency and product quality are significantly improved.

Description

Technical Field

[0001] This utility model relates to a concrete tetrahedral steel formwork. Background Technology

[0002] Wave-breaking stones are an important means of constructing dikes, and can typically be made of irregular natural stones or concrete blocks. Due to the limited resources of natural stones, precast concrete blocks are currently the main method of use in practice. However, due to the convenience of preparation, existing concrete blocks are mostly cuboids or rectangular blocks, which limits the improvement of dike stability. Concrete blocks with a regular tetrahedral structure are a better choice in terms of wave-breaking effect and stability. However, the existing formwork setting method is not well adapted to this shape. Not only is the assembly and disassembly of the mold cumbersome, requiring a lot of manpower and time, but the dimensional accuracy of the cast tetrahedral structure is also affected. Utility Model Content

[0003] The purpose of this utility model is to provide a convenient and practical concrete four-sided cone steel formwork.

[0004] The technical solution of this utility model is: a concrete tetrahedral steel formwork (or mold), which is provided with a mold unit. The mold unit is provided with a cavity surrounded by three triangular (especially equilateral triangular) side plates. The cavity is a tetrahedral cone with an open top. Concrete can be poured into the cavity through the top opening and demolded through the top opening.

[0005] The triangular side plates can be made of steel plates or other suitable materials. Typically, all the triangular side plates are the same shape, together forming a regular tetrahedral cavity. Depending on the actual needs, not all triangular side plates can be used to form a tetrahedral cavity of the corresponding shape.

[0006] Typically, there can be multiple mold units.

[0007] Multiple mold units can be arranged in one or more rows. For ease of manual operation, they are usually arranged in one row.

[0008] Preferably, adjacent mold units in the same row are inverted planar orientations, and the top edges (or top edges, which are any straight edges of the top opening) are fitted together and fixedly connected (e.g., welded) together.

[0009] Preferably, the top edges of adjacent mold units in the same row are aligned with each other. In this case, the top two sides of the integral structure (or overall structure, or component) formed by connecting mold units in the same row are parallel straight edges.

[0010] Preferably, the top openings of each mold unit face the same direction (upward) and are located on the same plane.

[0011] Furthermore, a three-dimensional frame is provided, and interconnected mold units are fixedly installed on the frame.

[0012] Preferably, the top of the frame is provided with a rectangular top frame, and the top of the integrated structure formed by the interconnection of each mold unit is located inside the top frame. The area inside the top frame is adapted to the top area of ​​the integrated structure formed by the interconnection of each mold unit, so that the space inside the top frame can accommodate the integrated structure (top of the integrated structure) formed by the interconnection of each mold unit. At least one part on each side frame of the top frame is in contact with and fixedly connected (e.g., welded) to the integrated structure formed by the interconnection of each mold unit, so as to form a strong constraint on the integrated structure in each lateral direction, thereby improving the overall stability and strength.

[0013] The bottom frame can have the same shape as the top frame. If necessary, a crossbeam or longitudinal beam that can support (fixedly connect) the bottom frame to the bottom of the mold unit (which is in the shape of a cone tip) can be provided.

[0014] Preferably, a semi-circular structure (or semi-circular structure) is provided on one or both sides of the frame (one or both sides in the lateral direction). Typically, the two ends of the semi-circular structure can be connected to the top and bottom of the corresponding sides of the frame to facilitate smooth rotation.

[0015] Preferably, the number of semi-circular structures on any side with a semi-circular structure is not less than two. That is, if a semi-circular structure is provided on any side, the number of semi-circular structures on that side should not be less than two, but it is permissible for one side not to have a semi-circular structure.

[0016] The semi-circular structures on the same side should be distributed in a basically balanced manner. For example, two semi-circles are set at the two ends of the corresponding side to achieve stable support for the frame.

[0017] Preferably, in the same mold unit, at least one triangular side plate is provided with a vent hole.

[0018] Furthermore, ventilation holes can be provided on all three triangular side plates of the mold unit.

[0019] The size, number, and location of the vent holes can be set according to actual needs so that air trapped in the concrete can escape from the vent holes during (and / or after) the concrete is poured. Conventional vibration can be used to promote the escape of air and make the concrete densely fill the entire cavity.

[0020] The beneficial effects of this utility model are as follows: Because it adopts an integrated mold unit with a concrete tetrahedral cavity for casting concrete tetrahedrals, it eliminates the need for on-site assembly and disassembly as with existing template setups. This simplifies the process for users, reduces on-site workload, improves efficiency, and avoids the negative impact of on-site assembly errors on product dimensional accuracy. Since multiple mold units are mounted on the same frame with their top openings facing the same direction and located on the same plane, multiple concrete tetrahedral products can be cast at once, further improving efficiency. The presence of multiple semi-circles on one side of the frame provides stable support on the ground during mold flipping, reducing labor intensity and ensuring smooth flipping and stable support, thus minimizing operational errors and guaranteeing product quality. The top cover protects the product inside the cavity during mold flipping, and the product remains supported on the top cover during demolding, preventing or reducing corner chipping. It also allows the demolded product to be held on the top cover for subsequent curing, avoiding or reducing the amount of handling work and product placement facilities required for curing. (Steel molds are not easily damaged and are easy to repair); therefore, using steel or other suitable materials for the molds makes them less prone to damage and easier to repair.

[0021] This invention greatly simplifies the construction process, significantly improves production efficiency and product quality, and can be used in the preparation of concrete tetrahedrons. Attached Figure Description

[0022] Figure 1 This is a plan view (top view) of the present utility model (template body). Figure 2 This is a front view schematic diagram (main view) of the present utility model (template body). Figure 3 This is a side view (elevation view) of the present utility model (template body) from another direction. Figure 4 This is a plan view (top view) of the cap of this utility model. Figure 5 This is a schematic diagram (top view) of the mold unit distribution of this utility model.

[0023] The markings in the diagram are: 1. Mold unit; 2. Cavity; 3. Top edge; 4. Frame; 5. Longitudinal brace; 6. Semi-arc; 7. Top cover. Detailed Implementation

[0024] See Figures 1 to 5The dimensions of the template (cavity) can be set according to the required dimensions of the regular tetrahedron. For example, based on current engineering practice, the side length of a regular tetrahedron can typically be set to four specifications: 35cm, 50cm, 60cm, and 80cm. Taking a side length of 60cm as an example, a 3.5m thick steel plate is selected, consisting of three triangular steel plates with equal side lengths. Two holes are drilled in each steel plate (for example, using a hand drill) for air venting during concrete vibration. The edges of these three triangular steel plates are joined together to form a tetrahedral cavity 2 for casting a tetrahedral. Each triangular steel plate corresponds to one side of the tetrahedral. The top opening of the cavity is also an equilateral triangle, corresponding to the other side of the tetrahedral. This cavity structure constitutes (can be called) a mold unit 1. Several mold units are arranged in a row, or multiple rows (e.g., two rows) if needed. The top openings of each mold unit are located on the same plane. The planar orientations of adjacent mold units in the same row are reversed (the planar rotation angles differ by 180°), so that the adjacent top edges 3 of adjacent mold units fit together and are aligned, which helps to save space. Adjacent mold units can be fixedly connected together by welding or other methods through the fitting top edges. In this distribution, the top two sides of the overall structure composed of mold units in the same row are parallel straight edges.

[0025] First, the three triangular steel plates used to assemble a mold unit are spliced ​​together and spot-welded (spot-welded on the edges of each group of interconnected parts) to shape the mold. After the size and shape of the mold unit meet the requirements, full welding is then performed. After processing multiple (e.g., 5) mold units, these mold units are welded together edge-to-edge according to the above arrangement requirements. Then, 40*40*2.0mm square steel is used to weld a 1880*600*560mm frame 4 around the perimeter, with three longitudinal braces 5 added in the middle.

[0026] Add six semi-circular sections (a semi-circular facade structure, which can be semi-circular in shape) to one side of the overall structure using 40*40*2.0mm square steel. The upper and lower ends of the semi-circle can be welded to the upper and lower frames of the frame, with the center protruding outwards. Two or more sections can be added. During formwork flipping, the template is rotated from the side with the semi-circle. The semi-circle is supported on the ground during the flipping process to reduce labor intensity.

[0027] A cover plate can be added as a top cover 7 to the casting surface of the square pyramid. A 1.5mm thick steel plate with square steel keel can be used for the surface to avoid or significantly reduce corner chipping during demolding, and to allow the demolded product to remain on the top cover for curing. Depending on the actual situation, the top cover and the product to be cured on it can be placed together in a suitable place, such as on a bracket that can support or erect the top cover, without having to remove the product from the top cover.

[0028] Depending on the actual situation, in actual operation, other durable / non-damaging materials can also be selected to replace steel (e.g., steel plates). The connection method between each part (e.g., triangular plate) and each component (e.g., mold unit) can be selected according to the characteristics of the materials used.

[0029] The method of using this mold (the method of preparing a regular tetrahedron concrete using this mold): Site layout: The concrete production site should be located near the concrete blocks to save on-site handling and transportation costs. The production site needs to be leveled and compacted, and the formwork should be placed in a way that allows concrete trucks to pour directly. The access roads for the required unloading equipment should be planned in advance to ensure smooth passage within the site during concrete block construction.

[0030] The construction site can be adjusted according to the scale and progress of the construction.

[0031] Pouring Construction: Before pouring concrete, use a wire brush to smooth the inner wall of the steel formwork, apply a release agent, adjust the concrete mixer truck to the correct position, and pour directly into the tetrahedral formwork (top of the formwork facing upwards). The type of concrete is selected according to actual needs; for example, ready-mixed concrete with a slump of 160-180mm can be used. A vibrator can be used to thoroughly mix the aggregate and cement paste in the concrete, removing air bubbles and ensuring the concrete fills all corners of the formwork, guaranteeing the shape and dimensions of the tetrahedral. Before the concrete initially sets, workers use a trowel to level the surface and begin curing.

[0032] Formwork Removal: The removal time is determined based on the actual situation. For example, when the temperature is above 25℃, formwork is generally removed 5 to 6 hours after pouring. Before removal, the steel cover is fixed with bolts, and then two workers use an arc to flip it over, placing the finished tetrahedron upside down on the steel cover. The connection between the steel cover and the mold (or mold body) is disconnected, and the formwork is gently tapped with a small hammer. The concrete tetrahedron is then demolded, and two workers lift the formwork. Curing is carried out as needed after demolding.

[0033] Depending on the actual situation, mechanical equipment can also be used for mold making in actual operation.

[0034] Example of using a concrete tetrahedron: Concrete block placement. Before placing the concrete blocks, a qualified third-party surveying company is hired to measure the riverbed elevation. After obtaining approval from the supervisor, designer, and construction units, and confirming that the concrete blocks meet the strength requirements, the placement of concrete blocks begins. A long-arm excavator is used to place the concrete blocks from the riverbank into the river channel. When the placement distance is long, wooden planks are laid on the concrete block platform to reduce damage caused by construction machinery rolling over the concrete. The concrete is then placed in sequence within the construction section. The third-party surveying company then measures the top surface of the placed concrete, ensuring it is 10-20cm higher than the design elevation to prevent settlement during acceptance and failure to meet design requirements. Based on on-site experiments and calculations, this template can achieve high precision (error ≤ 1mm) for four-sided cone templates, and is easy to operate (only 2 people are needed to operate), with high production efficiency (30 people for pouring, 80 people for demolding, and more than 12,000 pieces can be produced per day), and the mold can be used repeatedly for a long time.

[0035] Unless otherwise specified, the preferred and optional technical means disclosed in this utility model can be arbitrarily combined to form several different specific embodiments when one preferred or optional technical means is a further limitation of another technical means.

Claims

1. A concrete tetrahedral steel formwork, comprising a mold unit, wherein the mold unit has a cavity formed by three triangular side plates, the cavity being a tetrahedral cone with an open top.

2. The concrete regular pyramid steel formwork of claim 1, wherein There are multiple mold units, arranged in one or more rows.

3. The concrete regular square pyramid formwork of claim 2, wherein Adjacent mold units in the same row are inverted planar orientations, and their top edges are fitted together and fixedly connected.

4. The concrete regular square pyramid formwork of claim 3, wherein The top edges of adjacent mold units in the same row are aligned with each other.

5. The concrete regular pyramid steel form of claim 4, wherein The top openings of each mold unit face the same direction and are located on the same plane.

6. The concrete regular square pyramid formwork of claim 1, wherein In the same mold unit, at least one triangular side plate is provided with a vent hole.

7. The concrete regular pyramid steel form of any one of claims 1-6, wherein It has a three-dimensional frame, and the interconnected mold units are fixedly installed on the frame.

8. The concrete regular square pyramid formwork of claim 7, wherein The top of the frame is provided with a rectangular top frame, and the top of the integrated structure formed by the interconnection of each mold unit is located inside the top frame. The area inside the top frame is adapted to the top area of ​​the integrated structure formed by the interconnection of each mold unit.

9. The concrete regular square pyramid formwork of claim 7, wherein The frame has a semi-circular structure on one or both sides.

10. The concrete regular pyramid steel form of claim 9, wherein There are no fewer than two semi-circular structures on either side of the semi-circular structure.

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