Detachable prestressed composite slab production platform

Abstract

The utility model relates to a detachable prestressed composite slab production platform, and relates to the technical field of prestressed composite slab production equipment, which comprises a platform body, tensioning and anchoring support members are arranged at the front and back ends of the platform body respectively, and connecting members for anchoring connection with the ground are arranged at the left and right ends of the platform body; the platform body comprises a support panel, a plurality of horizontal steel pipes arranged in parallel and at intervals below the support panel, and a plurality of longitudinal I-shaped steels arranged in parallel and at intervals, each longitudinal I-shaped steel is fixed across all the horizontal steel pipes, the two ends of all the longitudinal I-shaped steels are also fixedly connected to a side blocking steel member, and the support panel is fixedly connected to the longitudinal I-shaped steels; the tensioning and anchoring support member comprises a tensioning plate fixed at the end of the horizontal steel pipe, and a plurality of through holes for the passage of steel strands are formed in the tensioning plate. The utility model can eliminate the dependence on the concrete foundation and realize nondestructive disassembly and migration, thereby meeting the needs of nearby, flexible and rapid production.

Description

Technical Field

[0001] This utility model relates to the technical field of prestressed composite slab production equipment, and in particular to a detachable prestressed composite slab production platform. Background Technology

[0002] The development of industrialized construction has driven the demand for on-site and localized production of precast concrete components. As an important type of precast floor slab, prestressed composite slabs require a critical step in their production process: applying enormous tension to the reinforcing steel (steel strands). Currently, the production of such slabs mainly relies on dedicated production lines within fixed factories.

[0003] The core of a traditional prestressed composite slab production line lies in the robust tensioning platforms at both ends. These platforms must be anchored to deeply buried reinforced concrete strip foundations to withstand and balance the enormous reaction forces generated during tensioning. This structure ensures the stability and safety of the tensioning process.

[0004] However, because strip foundations are one-time cast concrete structures fixed to the ground, the location of the production line is locked once it is built. When temporary or mobile prefabrication plants need to be established at different construction sites, such production lines cannot be moved as a whole. Forced relocation means destroying and discarding the original strip foundation, resulting in resource waste and economic losses. Furthermore, the reconstruction process is time-consuming and labor-intensive, completely eliminating the flexibility of relocation. Therefore, the fundamental problem with existing technology is that its fixed foundation structure severely restricts the mobility of the production line, making it impossible to reuse and failing to meet the demands for nearby, flexible, and rapid production of components in the context of industrialized construction. Utility Model Content

[0005] The purpose of this utility model is to address the problems in the prior art by providing a detachable prestressed composite slab production platform.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a detachable prestressed composite slab production platform, comprising a platform body, characterized in that: tensioning anchoring supports are respectively provided at the front and rear ends of the platform body, and connecting components for anchoring to the ground are respectively provided at the left and right ends of the platform body; the platform body includes a support panel, multiple transverse steel pipes arranged parallel and spaced apart below the support panel, and multiple longitudinal H-beams arranged parallel and spaced apart, each longitudinal H-beam being fixed across all the transverse steel pipes, and each end of all the longitudinal H-beams being fixedly connected to a side retaining steel member, the support panel being fixedly connected to the longitudinal H-beams; the tensioning anchoring supports include tensioning plates fixed to the ends of the transverse steel pipes, and the tensioning plates having multiple through holes for steel strands to pass through.

[0007] Preferably, the connector includes a plurality of legs spaced apart on the side retaining steel member, and the legs are fixedly connected to the ground by expansion bolts.

[0008] More preferably, the outer end face of the tensioning plate is also provided with a plurality of ribs at intervals, and the ribs are fixedly connected to the ground by expansion bolts.

[0009] More preferably, a connecting plate is fixed to each end of the transverse steel pipe, and the connecting plate is connected across the ends of all the transverse steel pipes by welding. The tensioning plate is detachably connected to the transverse steel pipe.

[0010] More preferably, the connecting plate has multiple connecting holes, and the connecting plates on adjacent sides of the two platform bodies are abutted and connected together to extend the detachable prestressed composite slab production platform.

[0011] More preferably, the transverse steel pipe is also fixed with a plurality of longitudinal steel pipes that span all the transverse steel pipes at intervals, wherein the two longitudinal steel pipes located at both ends of the transverse steel pipe abut against the tensioning plate on the corresponding side, and the through hole is located on the upper part of the tensioning plate and is higher than the longitudinal steel pipe.

[0012] More preferably, both the transverse steel pipe and the longitudinal steel pipe are integral, single-piece seamless square tubes.

[0013] Compared with existing technologies, this utility model forms a rigid tension bearing structure by fixing the ends of the transverse steel pipe and the tension plate, thus balancing the huge tension force within the platform frame. Combined with detachable ground connectors at both ends, stable anchoring on hardened ground can be achieved using only conventional expansion bolts, completely eliminating the need for traditional reinforced concrete strip foundations and significantly reducing civil engineering costs and time. The dedicated connectors at both ends allow the platform to be quickly fixed to the hardened ground of the construction site using standardized anchoring operations (such as expansion bolts). After production, the platform can be removed without damage by disassembling the connectors, enabling overall hoisting and transportation, easy reuse, and perfectly meeting the mobility requirements of mobile factories. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure in the embodiment;

[0015] Figure 2 This is a schematic diagram of the internal structure of the platform body in the embodiment;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0017] In the picture:

[0018] 1. Support panel; 2. Horizontal steel pipe; 3. Longitudinal I-beam; 4. Side retaining steel components; 5. Tensioning plate; 6. Through hole; 7. Support leg; 8. Expansion bolt; 9. Rib plate; 10. Connecting plate; 11. Longitudinal steel pipe. Detailed Implementation

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0020] It should be noted in advance that, in this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them.

[0021] like Figures 1 to 3 As shown, a detachable prestressed composite slab production platform includes a platform body, with tensioning and anchoring supports at the front and rear ends of the platform body, and connectors for anchoring to the ground at the left and right ends of the platform body. The platform body includes a support panel 1, multiple transverse steel pipes 2 arranged parallel to each other below the support panel 1, and multiple longitudinal H-beams 3 arranged parallel to each other. Each longitudinal H-beam 3 is fixed across all the transverse steel pipes 2, and both ends of all the longitudinal H-beams 3 are fixedly connected to a side retaining steel member 4. The support panel 1 is fixedly connected to the longitudinal H-beams 3. The tensioning and anchoring supports include tensioning plates 5 fixed to the ends of the transverse steel pipes 2, and multiple through holes 6 for steel strands to pass through on the tensioning plates 5.

[0022] The aforementioned connectors include multiple support legs 7 welded at intervals to the side retaining steel components 4. The support legs 7 are fixedly connected to the ground by expansion bolts 8. The support legs 7 welded to the side retaining steel components 4 can directly transfer the overall weight of the platform and the tensile overturning force to the ground, ensuring operational stability. The anchoring can be released by removing the expansion bolts 8, and the support legs 7 can be lifted and transported with the platform as a whole, enabling reuse with zero foundation damage.

[0023] Multiple ribs 9 are also provided at intervals on the outer end face of the tension plate 5. The ribs 9 are also fixed to the ground by expansion bolts 8. The setting of the ribs 9 can significantly enhance the local stiffness and bending resistance of the tension plate 5, ensuring that the anchoring surface does not deform under high-tonnage tensioning. In addition, the ribs 9 and the ground anchoring form additional anti-overturning support points, which, together with the lateral support feet 7, suppress the risk of platform displacement during tensioning operations and ensure the accuracy of prestress application.

[0024] In this embodiment, a connecting plate 10 is fixed to each end of the transverse steel pipe 2, and the connecting plate 10 is welded across the ends of all the transverse steel pipes 2. The tensioning plate 5 is detachably connected to the transverse steel pipe 2. The connecting plate 10 has multiple connecting holes. When the production line needs to be extended, the detachable prestressed composite slab production platform can be extended by abutting and connecting the connecting plates 10 on adjacent sides of the two platform bodies, thus breaking through the size limitation of a single unit and becoming a longer production line, while retaining the flexibility of disassembly. The production line extension can be completed simply by tightening bolts.

[0025] In addition, multiple longitudinal steel pipes 11, spanning all the transverse steel pipes 2, are fixed at intervals on the transverse steel pipes 2 to enhance the lateral stiffness of the platform. Two longitudinal steel pipes 11 located at each end of the transverse steel pipes 2 abut against the tensioning plate 5 on their respective sides. The through-holes 6 are located on the upper part of the tensioning plate 5 and are positioned higher than the longitudinal steel pipes 11. This ensures both the smoothness of the tensioning and anchoring operation and maintains the overall stability and reliability of the end structure through the close contact between the longitudinal steel pipes 11 and the tensioning plate 5.

[0026] In this embodiment, both the transverse steel pipe 2 and the longitudinal steel pipe 11 are integral, single-piece seamless square tubes. The continuous integrity of the seamless square tubes can avoid the weak points of the welded joints, ensure that the high-tonnage tension force is uniformly transmitted along the axial direction of the steel pipe without stress concentration, and improve the overall rigidity and deformation resistance of the platform in the longitudinal and transverse directions, providing a stable and reliable load-bearing frame for prestressing tensioning operations.

[0027] The general process of installing and operating the detachable prestressed composite slab production platform provided in the above embodiments is as follows:

[0028] 1. On the hardened ground of the construction site, select an area and hoist the individual detachable platform body to the predetermined position. Adjust the platform's orientation to ensure that the left and right side supports 7 and the outer ribs 9 of the tension plate 5 are in full contact with the ground.

[0029] 2. Insert expansion bolts 8 into the through holes of each support leg 7 and rib plate 9, tighten them, and then anchor them to the ground. At this point, the platform forms a rigid and stable system. The support legs 7 resist vertical loads and lateral tilting, and the rib plates 9 enhance the deformation resistance of the tension plate. The entire system does not require a concrete foundation.

[0030] 3. Lay the prestressed steel strands longitudinally along the support panel 1 of the platform, with both ends passing through the through holes 6 at the top of the tension plate 5. Apply the designed prestress to the steel strands using tension jacks and lock them onto the tension plate 5 using anchors. The seamless overall structure of the transverse steel pipe 2 and the longitudinal steel pipe 11 ensures uniform transmission of tension force and eliminates local stress concentration.

[0031] 4. Lay a steel mesh above the tensioned steel strands and pour concrete to form a composite slab. Utilize the flatness of the platform body supporting panel 1 to ensure the component's forming accuracy. After the concrete reaches the specified strength, cut the ends of the steel strands and release the anchorage.

[0032] 5. Remove all expansion bolts 8 and disconnect the supports 7 and ribs 9 from the ground. Lift the entire platform to the new construction site. The supports 7 and ribs 9 will be moved synchronously with the platform, achieving zero-foundation damage and reusability.

[0033] This utility model replaces the traditional strip foundation with an integrated rigid platform structure. It combines a detachable tension plate and a modular connecting plate design with expansion bolt anchoring for the legs and ribs, completely eliminating the reliance on concrete foundations. The platform can be disassembled and moved without damage. Furthermore, it supports rapid splicing and expansion of multiple platforms through standardized interfaces to meet the production needs of composite slabs of different sizes. It provides an efficient, low-cost, and recyclable solution for on-site prefabrication of industrialized buildings.

[0034] To facilitate understanding by those skilled in the art of the improvements of this utility model compared to the prior art, some of the accompanying drawings and descriptions of this utility model have been simplified. The above embodiments are preferred implementations of this utility model. In addition, this utility model can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A detachable prestressed composite slab production platform, comprising a platform body, characterized in that: Tensioning anchor support members are provided at the front and rear ends of the platform body, and connecting members for anchoring to the ground are provided at the left and right ends of the platform body. The platform body includes a support panel (1), multiple horizontal steel pipes (2) arranged below the support panel (1) and spaced in parallel, and multiple longitudinal I-beams (3) arranged in parallel. Each longitudinal I-beam (3) is fixed across all the horizontal steel pipes (2), and both ends of all the longitudinal I-beams (3) are fixedly connected to a side steel member (4). The support panel (1) is fixedly connected to the longitudinal I-beams (3). The tensioning anchor support includes a tensioning plate (5) fixed to the end of the transverse steel pipe (2), and the tensioning plate (5) has multiple through holes (6) for steel strands to pass through.

2. The detachable prestressed composite slab production platform according to claim 1, characterized in that: The connector includes multiple feet (7) spaced apart on the side retaining steel member (4), and the feet (7) are fixedly connected to the ground by expansion bolts (8).

3. The detachable prestressed composite slab production platform according to claim 1, characterized in that: The outer end face of the tension plate (5) is also provided with a plurality of ribs (9) at intervals, and the ribs (9) are fixedly connected to the ground by expansion bolts (8).

4. The detachable prestressed composite slab production platform according to claim 1, characterized in that: A connecting plate (10) is fixed at each end of the transverse steel pipe (2), and the connecting plate (10) is connected across the ends of all the transverse steel pipes (2) by welding. The tensioning plate (5) is detachably connected to the transverse steel pipe (2).

5. The detachable prestressed composite slab production platform according to claim 4, characterized in that: The connecting plate (10) has multiple connecting holes. By abutting and connecting the connecting plates (10) on adjacent sides of the two platform bodies together, the detachable prestressed composite slab production platform can be extended.

6. The detachable prestressed composite slab production platform according to claim 1, characterized in that: The transverse steel pipe (2) is also fixed with a number of longitudinal steel pipes (11) that span all the transverse steel pipes (2). The two longitudinal steel pipes (11) located at both ends of the transverse steel pipe (2) abut against the tension plate (5) on the corresponding side. The through hole (6) is located on the upper part of the tension plate (5) and is higher than the longitudinal steel pipe (11).

7. The detachable prestressed composite slab production platform according to any one of claims 1-6, characterized in that: Both the transverse steel pipe (2) and the longitudinal steel pipe (11) are integral single-piece seamless square pipes.

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