Bucket type foundation prefabricating bottom die device

Abstract

The utility model provides a barrel type foundation prefabricating bottom die device which comprises a plurality of movable bottom dies, the movable bottom dies form a lifting area used for passing of a module vehicle in barrel type foundation transportation, and the movable bottom dies enable the lifting area to be lifted to make contact with a transportation base plate on the module vehicle or to be lowered to be lower than a fixed bottom die through a lifting mechanism. The transport vehicle passes through; the plurality of fixed bottom dies are arranged at the end part of the lifting area to form a fence part of the transportation area; the fixed bottom die is integrally formed through pouring, and at least a steel box girder is arranged in the fixed bottom die.

Description

Technical Field

[0001] This utility model relates to the field of template technology for prefabricated structures, and in particular to a prefabricated bottom mold device for barrel foundations. Background Technology

[0002] In existing technologies, for the transportation of barrel-type foundation structures, the fixed formwork section has steel box beams separated from the concrete, creating a discontinuity that is prone to breakage. For the movable formwork section, lacking lifting mechanisms, transportation is achieved through lifting vehicles and airbags, resulting in a transport height of approximately 0.7m. When the transport height exceeds 1m, modular vehicles find it difficult to enter, making transportation challenging. Utility Model Content

[0003] The purpose of this utility model is to provide a precast bottom mold device for barrel foundations to solve the problems of the prior art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] A precast bottom formwork device for barrel foundations, comprising,

[0006] Several movable bottom molds form a lifting area for the passage of modular vehicles during barrel foundation transportation. The movable bottom molds utilize a lifting mechanism to raise the lifting area to contact the transport pad on the modular vehicle, or lower it below the fixed bottom mold to allow the transport vehicle to pass.

[0007] Several fixed bottom molds are set at the ends of the lifting area to form the enclosure of the transportation area;

[0008] The fixed bottom mold is integrally formed by casting, and at least a steel box girder is provided in the fixed bottom mold.

[0009] Furthermore, several of the movable bottom molds are connected to each other to form a cross-shaped lifting area.

[0010] Furthermore, several of the movable bottom molds are spliced ​​together to form a straight-line bottom mold in the middle, and arc-shaped bottom molds symmetrically arranged on both sides of the straight-line bottom mold.

[0011] Furthermore, several of the fixed bottom molds form two sets of enclosure sections, which are located on the outside of the cross-shaped lifting area. The fixed bottom molds and the movable bottom molds are spliced ​​together to form an elliptical closed loop.

[0012] Furthermore, within the elliptical closed loop, insertion gaps are formed between adjacent movable templates, between adjacent fixed templates, and between the movable template and the fixed bottom mold.

[0013] Furthermore, the movable bottom mold includes at least a first bottom mold and a movable mechanism that supports the first bottom mold, the movable mechanism being able to move up and down along the height direction of the first bottom mold.

[0014] Furthermore, the fixed bottom formwork includes an integrally cast steel box girder and a second bottom formwork located below the steel box girder, wherein the height of the steel box girder is equal to the height of the second bottom formwork.

[0015] Furthermore, it also includes prefabricated foundation components, which are connected to the fixed bottom mold and the movable bottom mold respectively via grout leakage strips.

[0016] Furthermore, the grout-leaking strip has a dovetail-shaped structure that forms a semi-enclosed cavity.

[0017] The beneficial effects of this utility model are as follows:

[0018] In this invention, the added steel box girder enhances the strength of the fixed template, thereby increasing the overall strength of the fixed template.

[0019] In this invention, the lifting and lowering of the movable bottom mold and the resulting transportation area allow the pad in the modular vehicle to be inserted, thus enabling the entire bottom mold to be loaded into the transport vehicle for transportation. Attached Figure Description

[0020] Figure 1 A structural schematic diagram of a precast bottom mold device for a barrel foundation provided by this utility model;

[0021] Figure 2 A diagram illustrating the usage state of a precast bottom mold device for a barrel foundation provided by this utility model;

[0022] Figure 3 A schematic diagram of the structure of the movable bottom mold provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the fixed bottom mold provided by this utility model;

[0024] Figure 5 A front view of a precast bottom mold device for a barrel foundation provided by this utility model;

[0025] In the picture:

[0026] 100. Movable bottom formwork; 110. Lifting mechanism; 120. Steel support leg; 130. Second steel box girder; 200. Fixed bottom formwork; 210. First steel box girder; 220. Second bottom formwork; 300. Precast foundation component; 400. Horizontal trolley track; 500. Longitudinal trolley track. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0028] Refer to the attached Figure 1-5 As shown in this embodiment, a precast bottom mold device for a barrel foundation is characterized by comprising several movable bottom molds 100, which form a lifting area for the passage of modular vehicles during barrel foundation transportation. The movable bottom molds 100 utilize a lifting mechanism 110 to raise the lifting area to contact the transport pad on the modular vehicle, or lower it below the fixed bottom mold 200 to allow the transport vehicle to pass. It also includes several fixed bottom molds 200, which are disposed at the ends of the lifting area to form enclosures for the transport area. In this embodiment, the fixed bottom molds 200 are integrally cast, and at least a first steel box girder 210 is provided within each fixed bottom mold 200. In this embodiment, the first steel box girder 210 is also integrally cast, thus enhancing the overall strength.

[0029] In this embodiment, after the prefabrication and assembly of the bottom formwork and the barrel foundation are completed, the movable bottom formwork is then removed, creating space for the modular vehicle to enter. Once the modular vehicle reaches the bottom of the foundation, the lifting mechanism 110 is used to raise the barrel foundation for transportation. In this embodiment, the reinforced concrete foundation below the fixed formwork 200 is a monolithically cast structure, while the first steel box beam 210 above is assembled and welded together in sections.

[0030] In this embodiment, when the bottom mold is assembled, several movable bottom molds 100 are first connected to each other to form a cross-shaped movable area. Then, several movable bottom molds 200 are assembled to form a straight line segment bottom mold in the middle, and an arc segment bottom mold symmetrically arranged on both sides of the straight line segment.

[0031] In this embodiment, a prefabricated base component 300 is also included. The prefabricated base component 300 has an elliptical structure and is connected to the fixed bottom mold 200 and the movable bottom mold 100 respectively via grout leakage strips. In this embodiment, spacing can be set between adjacent movable bottom molds 100, between adjacent fixed bottom molds 200, and between movable bottom molds 100 and fixed bottom molds 200 to facilitate the insertion of the modular vehicle.

[0032] In this embodiment, several fixed bottom molds 200 form two sets of enclosure sections, located outside the cross-shaped lifting area. The fixed bottom molds 200 and movable bottom molds 100, when joined, form an elliptical closed loop. In this embodiment, to facilitate the subsequent insertion of the modular vehicle, insertion gaps are formed between adjacent movable molds 100, adjacent fixed molds 200, and between the movable molds 100 and the fixed bottom molds 200 within the elliptical closed loop, allowing the insertion assembly of the modular vehicle to be inserted through these gaps.

[0033] In this embodiment, the movable bottom formwork 100 consists of a jack (i.e., a lifting mechanism 110), steel legs 120, and a second steel box girder 130 from bottom to top. The steel legs 120 and the second steel box girder 130 are made of steel plates and can be made into straight or curved shapes. In this embodiment, steel legs 120 can also be added, which fits snugly against the second steel box girder 130, thus making the entire steel structure relatively small and easy to dismantle and hoist.

[0034] In this embodiment, the steel legs 120 of the movable bottom formwork 100 of the barrel foundation and the second steel box girder 130 are first made into small segments in the curved section to replace the curve, and then welded into unit blocks. The straight section is also first made into segments, then welded into unit blocks, and then jacks are evenly arranged underneath to form a lifting mechanism.

[0035] In this embodiment, the movable bottom formwork 100 includes at least a first bottom formwork (i.e., the second steel box girder 130) and a movable mechanism (i.e., a lifting mechanism 110) that supports the first bottom formwork. The movable mechanism 110 moves up and down along the height direction of the first bottom formwork. During the movement, the jacks under the movable bottom formwork retract and become lower than the fixed bottom formwork, so that the movable bottom formwork can be removed.

[0036] In this embodiment, the fixed bottom formwork 200 includes a first steel box girder 210 integrally cast and a second bottom formwork 220 located below the first steel box girder 210. The height and length of the first steel box girder 210 are equal to the height and length of the second bottom formwork 210. Casting the two together as a single unit increases strength.

[0037] To facilitate the connection between the foundation precast components and the movable and fixed bottom molds, the grout leakage strip is a dovetail-shaped structure that forms a semi-enclosed cavity.

[0038] In this embodiment, the overall length of the bottom formwork is 40 meters, the width is 20 meters, and the height is 0.39 meters. It adopts a "fixed bottom formwork + movable bottom formwork" configuration. The area where the modular vehicle travels (16 meters wide) uses three movable bottom formwork units 100, each consisting of a 0.39-meter-high steel box girder, 0.6-meter-high steel support legs, and jacks. The area outside the modular vehicle's travel area uses a fixed bottom formwork configuration 200, comprising a 0.9-meter-wide, 1.21-meter-high concrete foundation and a 0.39-meter-high steel box girder, for a total height of 1.6 meters. The fixed bottom formwork on both sides of the platform for each production line uses a concrete foundation + steel box girder structure, while the movable bottom formwork within the central 16-meter range uses a jack + steel support legs + steel box girder structure. The steel box girder serves as the bottom formwork for the barrel foundation structure, and its width matches the structural width. The fixed and movable bottom formwork are not connected but assembled from each other. Dovetail rubber strips are used to prevent leakage at the gaps between the bottom formwork and the barrel foundation.

[0039] In this embodiment, the modular vehicle has five sets of sets, each set is 2.3 meters long, and the total width is 12.3 meters. Therefore, the spacing between the enclosure cavities is 16 meters. During transportation, the transverse trolley track 400 and the longitudinal trolley track 500 in the modular vehicle move accordingly.

[0040] In practical use, when erecting the bottom formwork, first clean the ground, then mark and measure the position of the bucket foundation, install the steel bottom formwork, and fix the bottom formwork. The 200mm concrete foundation adopts an integral cast-in-place process, and the steel structure bottom formwork segments are connected by welding. The external dimensions of the bucket foundation are mainly controlled by the bottom formwork. The processing and installation of the bottom formwork require precision, with a height difference of less than 5mm. The installed steel bottom formwork must have good integrity. Dovetail rubber strips are used on the sides to prevent concrete leakage.

[0041] In the existing technology, most barrel foundation structures are constructed using fixed bottom formwork, specifically by directly using a concrete foundation and a steel box girder structure. However, the concrete foundation structure cannot form an integral structure, and the steel box girder is not poured, which leads to a break in the structure. The steel box girder at the break point is then reinforced.

[0042] In some existing movable bottom forms, jacks and steel box girders are used from bottom to top, and trolleys and airbags are used to transport them out. However, when transporting barrel foundation structures, this method is generally used for transport at a height of 0.7m. When it is necessary to lift them to a height of more than 1m for transport, it is difficult to meet the requirements.

[0043] In this embodiment, the fixed bottom formwork 200 is a concrete foundation + steel box girder structure. However, the concrete foundation is not a whole and there is a break in the middle. The steel box girder at the break needs to be reinforced.

[0044] The movable bottom formwork 100 consists of jacks and steel box beams from bottom to top, without steel outriggers, because it is transported using a lifting vehicle and airbags (the height is about 0.7m), so the bottom formwork does not need to be heightened with steel outriggers.

[0045] In this embodiment, the concrete foundation of the fixed bottom formwork 200 is cast as a whole, and there are no structural weak points. The upper steel box beam does not require additional reinforcement.

[0046] In this embodiment, a modular vehicle (approximately 1.5m high) is used for transportation. Steel outriggers are required to increase the height. The stability of the bottom formwork structure is relatively poor, and the jacks need to be arranged more densely to reduce the overlap between the movable bottom formwork and thus improve the overall accuracy of use.

[0047] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precast bottom formwork device for a barrel-type foundation, characterized in that, include, Several movable bottom molds form a lifting area for the passage of modular vehicles during barrel foundation transportation. The movable bottom molds utilize a lifting mechanism to raise the lifting area to contact the transport pad on the modular vehicle, or lower it below the fixed bottom mold to allow the transport vehicle to pass. Several fixed bottom molds are set at the ends of the lifting area to form the enclosure of the transportation area; The fixed bottom mold is integrally formed by casting, and at least a steel box girder is provided in the fixed bottom mold.

2. The precast bottom formwork device for a barrel foundation according to claim 1, characterized in that, Several of the movable bottom molds are connected to each other to form a cross-shaped lifting area.

3. The precast bottom formwork device for a barrel foundation according to claim 2, characterized in that, Several movable bottom molds are spliced ​​together to form a straight segment bottom mold in the middle, and an arc segment bottom mold symmetrically arranged on both sides of the straight segment.

4. The precast bottom formwork device for a barrel foundation according to claim 3, characterized in that, Several fixed bottom molds form two sets of enclosure sections, located on the outside of the cross-shaped lifting area. The fixed bottom molds and movable bottom molds are spliced ​​together to form an elliptical closed loop.

5. The precast bottom formwork device for a barrel foundation according to claim 4, characterized in that, Within the elliptical closed loop, insertion gaps are formed between adjacent movable templates, between adjacent fixed templates, and between the movable template and the fixed bottom mold.

6. The precast bottom formwork device for a barrel foundation according to claim 1, characterized in that, The movable bottom mold includes at least a first bottom mold and a movable mechanism that supports the first bottom mold, and the movable mechanism moves up and down along the height direction of the first bottom mold.

7. A precast bottom formwork device for a barrel foundation according to claim 6, characterized in that, The fixed bottom formwork includes a steel box girder cast integrally and a second bottom formwork located below the steel box girder. The height of the steel box girder is equal to the height of the second bottom formwork.

8. The precast bottom formwork device for a barrel foundation according to claim 1, characterized in that, It also includes precast foundation components, which are connected to the fixed bottom mold and the movable bottom mold respectively via grout leakage strips.

9. A precast bottom formwork device for a barrel foundation according to claim 8, characterized in that, The grout-leaking strip has a dovetail-shaped structure that forms a semi-enclosed cavity.

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