Dragging platform for dismantling inner mold of precast beam

By designing a dragging platform for removing the inner formwork of precast beams, and using a sliding plate and support frame to support the inner formwork, the problem of damage to the precast beams during inner formwork removal was solved, achieving an efficient and safe inner formwork removal process.

CN223890215UActive Publication Date: 2026-02-10CHINA RAILWAY TENTH GRP FOURTH ENG CO LTD +1
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Patent Information

Application Number
CN202423057137.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2026-02-10
Estimated Expiration
2034-12-11

AI Technical Summary

Technical Problem

In existing technologies, the removal of the inner mold can easily damage the precast beam, especially as the increased volume of the inner mold during the pulling-out process increases the pressure on the corners of the precast beam.

Method used

A precast beam inner formwork removal and dragging platform was designed, including a sliding plate and a support frame. The sliding plate is equipped with a winch to support the inner formwork and prevent the inner formwork from directly contacting the precast beam. The winch is used to pull the inner formwork. The sliding plate is equipped with rubber pads and rollers to reduce friction and collision. The support frame is adjustable to accommodate inner formwork of different lengths.

Benefits of technology

It effectively prevents damage to the precast beams during the dismantling process of the inner mold, improves dismantling efficiency and safety, reduces wear on the sliding plate and inner mold, and enhances the structural stability of the platform.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of precast beam inner mold dismantling tools, in particular to a precast beam inner mold dismantling dragging platform. The platform comprises a platform body, and the platform body comprises a sliding plate arranged in the length direction of the precast beam inner mold and a supporting frame used for pushing the sliding plate to the position below the inner mold. A winch used for pulling the inner mold is arranged at the end, away from the inner mold, of the sliding plate. And damage to the precast beam caused by the fact that the inner mold extrudes the side wall of the opening of the precast beam when the winch pulls out of the inner mold can be prevented.
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Description

Technical Field

[0001] This utility model relates to the technical field of precast beam inner formwork removal tools, specifically, to a precast beam inner formwork removal dragging platform. Background Technology

[0002] Precast bridge beams are first cast in a factory and then transported to a designated location for use. Currently, the casting of precast beams requires the use of inner and outer molds. Concrete is poured between the inner and outer molds to form the precast beam. Since the outer mold is on the outside of the precast beam, it is convenient for the casting personnel to remove. When removing the inner mold, a winch is used to pull the rope to pull the inner mold out of the precast beam. However, as the inner mold is continuously pulled out of the precast beam, the volume of the inner mold extending out of the precast beam becomes larger and larger, which increases the pressure on the edges and corners of the precast beam and can easily cause damage to the precast beam. Utility Model Content

[0003] This utility model provides a precast beam inner formwork removal and dragging platform, which can overcome some or all the defects of the prior art.

[0004] According to the present invention, a precast beam inner mold removal and dragging platform includes: a platform body, the platform body including a sliding plate arranged along the length direction of the precast beam inner mold, and a support frame for pushing the sliding plate to the bottom of the inner mold; a winch for pulling the inner mold is provided at the end of the sliding plate away from the inner mold.

[0005] With this invention, after the precast beam is poured, the pouring personnel move the platform body to one side of the precast beam, making the upper end of the sliding plate on the platform body flush with the lower end of the inner mold of the precast beam. Then, the hook of the rope on the winch is hung on the inner mold of the precast beam, and the winch is started. The winch winds up the rope, and the rope pulls the inner mold, pulling the inner mold from the precast beam onto the sliding plate. During the process of pulling out the inner mold, the inner mold always slides on the sliding plate and is supported by the sliding plate, thereby preventing the inner mold from squeezing the side wall of the opening of the precast beam and causing damage to the precast beam.

[0006] Preferably, the skateboard includes multiple sub-skateboards connected end to end along the length of the skateboard, and the support frame includes multiple sub-support frames for supporting the sub-skateboards; the sub-skateboards and the sub-support frames together constitute a sub-platform; one end of the sub-skateboard is provided with a first connecting part, and the other end is provided with a second connecting part that connects to the first connecting part on the adjacent sub-skateboard.

[0007] This invention allows pouring workers to connect multiple sub-support frames according to the length of the inner mold when dismantling it, thus facilitating the platform's adaptation to inner molds of different lengths. When connecting the sub-support frames, firstly, align the first connecting part of one sub-slide plate with the second connecting part on another sub-slide plate. Then, push the first mounting plate on the first connecting part, causing it to rotate along the hinge. This allows the limiting plate below the first mounting plate to extend into the limiting hole on the second connecting part, connecting the two sub-slide plates. This facilitates the pouring workers in connecting the two sub-slide plates. When it is necessary to disconnect, the pouring workers simply push the first mounting plate upwards, causing it to rotate along the hinge, thereby disengaging the limiting plate from the limiting hole and releasing the connection between the two sub-slide plates. This allows the pouring workers to easily disassemble the platform's main body into multiple sub-support frames, making it easier for them to move the platform's main body.

[0008] Preferably, the first connecting part includes a first mounting plate hinged to one end of the sub-slide plate, and a limiting plate is provided at the lower end face of the first mounting plate along the length direction of the first mounting plate; the second connecting part includes a second mounting plate along the width direction of the sub-slide plate, and a limiting hole is provided at the second mounting plate for the limiting plate to extend into.

[0009] With this invention, after the limiting plate on the first mounting plate extends into the limiting hole on the second mounting plate, the upper end surface of the first mounting plate and the upper end surface of the sub-slide plate are on the same horizontal plane, thereby preventing the inner mold from hitting the first mounting plate and causing damage to the first mounting plate when the winch pulls the inner mold.

[0010] Preferably, a rubber pad is provided at the end of the first mounting plate away from the hinge.

[0011] With this invention, after the limiting plate on the first mounting plate extends into the limiting hole on the second mounting plate, there is a gap between the first mounting plate and the adjacent sub-slide plate. This gap is sealed by a rubber pad, thereby preventing collisions between adjacent sub-slide plates when the winch pulls the inner mold. The rubber pad acts as a buffer to prevent damage caused by collisions between adjacent sub-slide plates. At the same time, the rubber pad also seals the gap, ensuring the overall structural stability of the platform body.

[0012] Preferably, the sub-slide plate has two mounting holes that pass through it, and two fixing plates are provided below the mounting holes on both sides of the mounting holes. A roller passes through the mounting hole between the two fixing plates.

[0013] With this invention, after the inner mold is pulled onto the slide by the winch, the rollers support the inner mold, reducing the friction between the inner mold and the slide, allowing the winch to pull the inner mold more easily and quickly, thereby improving the overall work efficiency.

[0014] Preferably, the sub-support frame includes two support rods located below the sub-slide plate and arranged along the length of the sub-slide plate; the end of the support rod away from the sub-slide plate is provided with a plurality of support feet spaced apart along the length of the sub-slide plate, and the support feet are arranged perpendicular to the support rods.

[0015] With this invention, the support feet separate the sub-slide plate from the ground, making it easier for pouring personnel to grab the sub-slide plate and lift and move the sub-support frame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of the platform in Example 1.

[0017] Figure 2 This is a schematic diagram of the sub-platform in Example 1.

[0018] Figure 3 This is a back view of the sub-platform in Example 1.

[0019] Figure 4 This is a schematic diagram of the first connecting part in Embodiment 1.

[0020] Figure 5 This is a cross-sectional view of the sub-platform in Example 1.

[0021] Figure 6 This is a cross-sectional view of the connection position between the first connecting part and the second connecting part in Embodiment 1. Detailed Implementation

[0022] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.

[0023] Example 1

[0024] like Figure 1-6 As shown, this embodiment provides a precast beam inner mold removal and dragging platform, including a platform body 100. The platform body 100 includes a slide plate 110 arranged along the length direction of the precast beam inner mold, and a support frame 130 for pushing the slide plate 110 to the bottom of the inner mold. A winch 120 for pulling the inner mold is provided at the end of the slide plate 110 away from the inner mold.

[0025] In this embodiment, after the precast beam is poured, the pouring personnel move the platform body 100 to one side of the precast beam, so that the upper end face of the sliding plate 110 on the platform body 100 is flush with the lower end face of the inner mold of the precast beam. Then, the hook of the rope on the winch 120 is hung on the inner mold of the precast beam, and then the winch 120 is started. The winch 120 winds up the rope, and the rope pulls the inner mold, pulling the inner mold from the precast beam onto the sliding plate 110. During the process of the inner mold being pulled out, the inner mold always slides on the sliding plate 110 and is supported by the sliding plate 110, thereby preventing the inner mold from squeezing the side wall of the opening of the precast beam and causing damage to the precast beam.

[0026] In this embodiment, the slide plate 110 includes a plurality of sub-slide plates 210 connected end to end along the length of the slide plate 110, and the support frame 130 includes a plurality of sub-support frames 230 for supporting the sub-slide plates 210 respectively; the sub-slide plates 210 and the sub-support frames 230 together constitute a sub-platform 200; one end of the sub-slide plate 210 is provided with a first connecting part 220, and the other end is provided with a second connecting part 270 that is connected to the first connecting part 220 on the adjacent sub-slide plate 210.

[0027] In this embodiment, when dismantling the inner mold, the pouring personnel can connect multiple sub-support frames 230 according to the length of the inner mold, thereby facilitating the platform body 100 to adapt to inner molds of different lengths. When connecting the sub-support frames 230, firstly, align the first connecting part 220 at one end of one sub-slide plate 210 with the second connecting part 270 on another sub-slide plate 210, and then push the first mounting plate 430 on the first connecting part 220 to rotate along the hinge, thereby extending the limiting plate 410 below the first mounting plate 430. The two sub-slide plates 210 are connected by inserting into the limiting hole 261 on the second connecting part 270, which makes it convenient for the pouring personnel to connect the two sub-slide plates 210. When it is necessary to disconnect them, the pouring personnel only need to push the first mounting plate 430 upward, so that the first mounting plate 430 rotates along the hinge, thereby driving the limiting plate 410 to disengage from the limiting hole 261, thereby disconnecting the two sub-slide plates 210. This makes it convenient for the pouring personnel to disassemble the platform body 100 into multiple sub-support frames 230, thereby making it convenient for the pouring personnel to move the platform body 100.

[0028] In this embodiment, the first connecting part 220 includes a first mounting plate 430 hinged to one end of the sub-slide plate 210, and a limiting plate 410 is provided at the lower end surface of the first mounting plate 430 along the length direction of the first mounting plate 430; the second connecting part 270 includes a second mounting plate 260 along the width direction of the sub-slide plate 210, and a limiting hole 261 is provided at the second mounting plate 260 for the limiting plate 410 to extend into.

[0029] In this embodiment, after the limiting plate 410 on the first mounting plate 430 extends into the limiting hole 261 on the second mounting plate 260, the upper end surface of the first mounting plate 430 and the upper end surface of the sub-slide plate 210 are on the same horizontal plane, thereby preventing the inner mold from hitting the first mounting plate 430 and causing damage to the first mounting plate 430 when the winch 120 pulls the inner mold.

[0030] In this embodiment, a rubber pad 420 is provided at the end of the first mounting plate 430 away from the hinge.

[0031] In this embodiment, after the limiting plate 410 on the first mounting plate 430 extends into the limiting hole 261 on the second mounting plate 260, there is a gap between the first mounting plate 430 and the adjacent sub-slide plate 210. This gap is sealed by the rubber pad 420, thereby preventing collisions between the adjacent sub-slide plates 210 when the winch 120 pulls the inner mold. The rubber pad 420 acts as a buffer to prevent damage caused by collisions between the adjacent sub-slide plates 210. At the same time, the rubber pad 420 also seals the gap, ensuring the overall structural stability of the platform body 100.

[0032] In this embodiment, the sub-slide plate 210 is provided with two mounting holes 280 passing through the sub-slide plate 210, and two fixing plates 310 are provided below the mounting holes 280 on both sides of the mounting holes 280. A roller 290 passing through the mounting holes 280 is provided between the two fixing plates 310.

[0033] In this embodiment, after the inner mold is pulled onto the slide plate 110 by the winch 120, the roller 290 supports the inner mold, reducing the friction between the inner mold and the slide plate 110, so that the winch 120 can pull the inner mold more easily and quickly, thereby improving the overall work efficiency.

[0034] In this embodiment, the sub-support frame 230 includes two support rods 240 located below the sub-slide plate 210 and arranged along the length of the sub-slide plate 210; the end of the support rod 240 away from the sub-slide plate 210 is provided with a plurality of support feet 250 spaced apart along the length of the sub-slide plate 210, and the support feet 250 are arranged perpendicular to the support rod 240.

[0035] In this embodiment, the support foot 250 separates the sub-slide plate 210 from the ground, thereby making it easier for the pouring personnel to grab the sub-slide plate 210 and lift and move the sub-support frame 230.

[0036] Both the support rod 240 and the support foot 250 are I-beams, and the sub-support frame 230 is formed by welding the I-beams together.

[0037] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.

[0038] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A dragging platform for dismantling the inner formwork of a precast beam, characterized in that: The platform includes a main body (100), which includes a sliding plate (110) arranged along the length of the inner mold of the precast beam, and a support frame (130) for pushing the sliding plate (110) to the bottom of the inner mold; a winch (120) for pulling the inner mold is provided at the end of the sliding plate (110) away from the inner mold. The slide (110) includes multiple sub-slides (210) connected end to end along the length of the slide (110), and the support frame (130) includes multiple sub-support frames (230) for supporting the sub-slides (210); the sub-slides (210) and the sub-support frames (230) together constitute a sub-platform (200); one end of the sub-slide (210) is provided with a first connecting part (220), and the other end is provided with a second connecting part (270) that connects to the first connecting part (220) on the adjacent sub-slide (210); The sub-slide plate (210) has two mounting holes (280) that pass through the sub-slide plate (210). Below the mounting holes (280) are two fixing plates (310) set on both sides of the mounting holes (280). Between the two fixing plates (310) is a roller (290) that passes through the mounting holes (280).

2. The precast beam inner formwork removal and towing platform according to claim 1, characterized in that: The first connecting part (220) includes a first mounting plate (430) hinged to one end of the sub-slide plate (210), and a limiting plate (410) is provided at the lower end face of the first mounting plate (430) along the length direction of the first mounting plate (430); the second connecting part (270) includes a second mounting plate (260) along the width direction of the sub-slide plate (210), and a limiting hole (261) is provided at the second mounting plate (260) for the limiting plate (410) to extend into.

3. The precast beam inner formwork removal and towing platform according to claim 2, characterized in that: A rubber pad (420) is provided at the end of the first mounting plate (430) away from the hinge.

4. The precast beam inner formwork removal and towing platform according to claim 2, characterized in that: The sub-support frame (230) includes two support rods (240) located below the sub-slide plate (210) and arranged along the length of the sub-slide plate (210); the end of the support rod (240) away from the sub-slide plate (210) is provided with a plurality of support feet (250) spaced apart along the length of the sub-slide plate (210), and the support feet (250) are arranged perpendicular to the support rods (240).