Movable form removal platform

Abstract

The utility model discloses a movable form removal platform, including main truss, walking system, bottom platform and suspension system. Main truss is movably installed on box girder through walking system to make main truss can walk along longitudinal bridge, and bottom platform is located at the lower part of main arch ring bottom mould. Suspension system includes winch, steel wire rope, fixed pulley and trolley group, and winch and fixed pulley are installed on main truss, one end of steel wire rope is connected with winch, and the other end of steel wire rope is connected with trolley group after passing fixed pulley, and trolley group is connected with bottom platform. The movable form removal platform can complete the whole main arch ring bottom mould once and greatly improves construction efficiency, shortens construction period, reduces construction cost, reduces construction risk and realizes environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a movable formwork removal platform. Background Technology

[0002] As an ancient and classic form of bridge, the core mechanical principle of arch bridges lies in the transformation of the superstructure load into axial pressure along the curve of the arch ring through the arch structure, and finally the force is transmitted to the bridge abutments or foundations on both banks. This "pressure chain" transmission mechanism makes arch bridges particularly good at using materials with high compressive strength and low tensile strength, such as stone and concrete, achieving a perfect unity of mechanics and aesthetics.

[0003] Among the many components of an arch bridge, the main arch ring is undoubtedly the soul and backbone of the entire structure. It is a curved or zigzag three-dimensional structure composed of the main load-bearing components of the arch bridge, spanning between the support points on both banks. Its axis usually adopts a reasonable constant load pressure line to ensure that the arch ring section mainly bears the pressure under the main load.

[0004] After the main arch ring concrete pouring is completed, the bottom formwork of the main arch ring needs to be removed. Currently, the bottom formwork of the main arch ring is removed using a fixed platform. The removal of the bottom formwork for each segment requires the installation and dismantling of the formwork platform. This process is lengthy, cumbersome, and consumes a large amount of materials. Personnel frequently move up and down between the arch rib and the formwork platform, exposing them to the risks of heights, posing significant safety hazards, increasing the difficulty of setting up safety protection measures, and requiring a large investment of manpower, material resources, and financial resources. Utility Model Content

[0005] Therefore, it is necessary to provide a movable formwork removal platform to address the problems of long construction cycles, complicated installation and dismantling, and large material consumption associated with the use of fixed platforms for the removal of the bottom formwork of the existing main arch ring.

[0006] A movable formwork removal platform includes: a main truss, a walking system, a base platform, and a suspension system; The main truss is movably installed on the box girder via the walking system, so that the main truss can move along the longitudinal direction of the bridge, and the bottom platform is located at the bottom of the main arch ring formwork; The suspension system includes a winch, a wire rope, a fixed pulley, and a trolley block. The winch and the fixed pulley are installed on the main truss. One end of the wire rope is connected to the winch, and the other end of the wire rope passes around the fixed pulley and is connected to the trolley block. The trolley block is connected to the bottom platform.

[0007] In one embodiment, the suspension system is provided with four sets of trolleys, each set of which is connected to one of the four corners of the base platform.

[0008] In one embodiment, the walking system includes a track and a wheel box, the track being mounted on the box girder and the wheel box being mounted on the bottom of the main truss, the wheel box being able to travel along the track.

[0009] In one embodiment, the main truss includes an upper plane, a lower plane, and connecting members connecting the upper plane and the lower plane, with the winch and the fixed pulley disposed on the upper plane.

[0010] In one embodiment, the upper plane is provided with a first steel ramp for mounting the winch.

[0011] In one embodiment, the lower plane is provided with a mounting base for connection to the walking system.

[0012] In one embodiment, the base platform includes an upper platform, a lower platform, and truss members connecting the upper platform and the lower platform, and the trolley block is connected to the upper platform.

[0013] In one embodiment, the upper platform is provided with a second steel scaffold for supporting construction equipment or personnel.

[0014] In one embodiment, the main truss and the bottom platform are interconnected at least by longitudinally and transversely arranged Bailey beams and support frames.

[0015] In one embodiment, the free face of the main truss is provided with a first protective railing; and / or The free side of the base platform is equipped with a second protective railing.

[0016] The aforementioned movable demolding platform has at least the following advantages: The main arch bottom formwork is dismantled via a base platform. The height of the base platform is adjusted in real-time using a winch to wind or release steel wire ropes, matching the height of different main arch segments. Simultaneously, the adjustment of the steel wire ropes ensures the base platform remains level throughout the dismantling process. After each segment's bottom formwork is dismantled, the main truss moves along the longitudinal direction of the bridge to adjust the position of the base platform, proceeding to the next segment for continued dismantling until all bottom formwork is removed. This allows for the entire main arch bottom formwork to be installed and dismantled in a single operation, significantly improving construction efficiency, shortening the construction period, reducing construction costs, minimizing construction risks, and achieving environmental protection. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the structure of a movable demolding platform in one embodiment; Figure 2 for Figure 1 Side view of the movable demolding platform shown; Figure 3 for Figure 1 Schematic diagram of the upper plane of the main truss; Figure 4 for Figure 1 Schematic diagram of the lower plane of the central main truss; Figure 5 for Figure 1 Schematic diagram of the upper platform of the middle bottom platform; Figure 6 for Figure 1 A schematic diagram of the structure of the lower platform of the midsole platform.

[0019] Figure label: 1-Box girder, 2-Main arch ring, 10-Main truss, 11-Upper plane, 12-Lower plane, 13-Connecting rod, 14-First steel scaffolding, 15-Mounting seat, 16-First guardrail, 20-Travel system, 21-Railway, 22-Travel wheel box, 30-Bottom platform, 31-Upper platform, 32-Lower platform, 33-Truss member, 34-Second steel scaffolding, 35-Second guardrail, 40-Suspension system, 41-Wind, 42-Wire rope, 43-Fixed pulley, 44-Pulley block, 50-Bailey beam, 60-Support frame, 70-Distribution beam. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] Please see Figure 1 and Figure 2 One embodiment of the movable demolding platform includes a main truss 10, a walking system 20, a base platform 30, and a suspension system 40.

[0024] The main truss 10 is movably mounted on the box girder 1 via a traveling system 20, enabling the main truss 10 to travel along the longitudinal direction of the bridge. In one embodiment, the traveling system 20 includes a track 21 and a traveling wheel box 22. The track 21 is mounted on the box girder 1 and is arranged along the longitudinal direction of the bridge. The traveling wheel box 22 is mounted at the bottom of the main truss 10 and can travel along the track 21, thereby enabling the main truss 10 to travel along the longitudinal direction of the bridge.

[0025] The bottom platform 30 is located at the lower part of the bottom formwork of the main arch ring 2. The suspension system 40 is used to connect the bottom platform 30 to the main truss 10, thereby suspending the bottom platform 30 below the bottom formwork of the main arch ring 2. In one embodiment, the suspension system 40 is provided in four sets, and the four sets of suspension systems 40 are respectively connected to the four corners of the bottom platform 30 to ensure the stability of the suspension of the bottom platform 30 and prevent the bottom platform 30 from tilting.

[0026] In one embodiment, the suspension system 40 includes a winch 41, wire ropes 42, fixed pulleys 43, and a pulley block 44. The winch 41 and fixed pulleys 43 are mounted on the main truss 10. One end of the wire rope 42 is connected to the winch 41, and the other end of the wire rope 42 passes over the fixed pulley 43 and connects to the pulley block 44, which is connected to the base platform 30. The height of the base platform 30 can be adjusted in real time by the winch 41 pulling the wire ropes 42 to match the heights of different main arch ring segments, allowing the dismantled bottom formwork to be directly lowered onto the base platform 30. Simultaneously, by adjusting the lengths of the wire ropes 42 in the four suspension systems 40, the base platform 30 is kept level at all times.

[0027] Please refer to the following: Figure 3 and Figure 4 In one embodiment, the main truss 10 includes an upper plane 11, a lower plane 12, and connecting rods 13 connecting the upper plane 11 and the lower plane 12. The winch 41 and the fixed pulley 43 are disposed on the upper plane 11. Further, the upper plane 11 is provided with a first steel scaffold 14 for mounting the winch 41, and the lower plane 12 is provided with a mounting base 15 for connecting with the travel system 20, ensuring that the winch 41 and the travel system 20 are installed securely.

[0028] In one embodiment, the base platform 30 includes an upper platform 31, a lower platform 32, and truss members 33 connecting the upper platform 31 and the lower platform 32. A trolley block 44 is connected to the upper platform 31. Furthermore, the upper platform 31 is provided with a second steel scaffolding 34 for supporting construction equipment or personnel.

[0029] like Figures 3 to 6 As shown, in one embodiment, the main truss 10 and the bottom platform 30 are interconnected at least by longitudinally and transversely arranged Bailey beams 50 and support frames 60.

[0030] Specifically, such as Figure 3 As shown, the upper plane 11 of the main truss 10 includes two sets of spaced Bailey beams 50. Two sets of support frames 60 are connected to the two sets of Bailey beams 50 at their respective ends, and the two sets of support frames 60 are spaced apart. The upper plane 11 also includes distribution beams 70, which connect the two sets of Bailey beams 50 and are respectively located at both ends of the Bailey beams 50. The support frame 60 is located between the two sets of distribution beams 70. A first steel scaffolding 14 is installed on the Bailey beams 50, and a fixed pulley 43 is installed on the distribution beams 70.

[0031] like Figure 4 As shown, the lower plane 12 of the main truss 10 includes two sets of spaced Bailey beams 50, and the two ends of the support frame 60 are respectively connected to the two sets of Bailey beams 50. There are multiple sets of support frames 60, which are arranged sequentially along the length of the Bailey beams 50.

[0032] like Figure 5 As shown, the upper platform 31 of the bottom platform 30 includes two sets of spaced Bailey beams 50, with the two ends of the support frame 60 connected to the two sets of Bailey beams 50 respectively. The upper platform 31 also includes a distribution beam 70, which connects the two sets of Bailey beams 50. The trolley block 44 of the suspension system 40 is specifically connected to the distribution beam 70, and the multiple sets of support frames 60 and multiple sets of distribution beams 70 are arranged at least partially staggered.

[0033] like Figure 6 As shown, the lower platform 32 of the base platform 30 includes two sets of spaced Bailey beams 50, with the two ends of the support frame 60 connected to the two sets of Bailey beams 50 respectively. The lower platform 32 also includes distribution beams 70, with multiple sets of distribution beams 70 arranged sequentially along the length of the Bailey beams 50.

[0034] In one embodiment, a first protective railing 16 is provided on the free face of the main truss 10 to ensure the safety of workers on the main truss 10 and reduce the possibility of construction risks. A second protective railing 35 is provided on the free face of the bottom platform 30 to ensure the safety of workers on the bottom platform 30. Furthermore, safety nets can also be designed on the free faces of the main truss 10 and the bottom platform 30 to further ensure safety.

[0035] The working principle of the aforementioned movable demolding platform is as follows: First, the track 21 and the traveling wheel box 22 are installed on the box girder 1. Then, the main truss 10 and the bottom platform 30 are pre-assembled on site. The main truss 10 and the bottom platform 30 are lifted and installed as a whole using lifting equipment. The main truss 10 and the bottom platform 30 are connected to the traveling system as a whole by steel wire rope 42. The trial run is conducted to check whether the winch 41 brake is sensitive, whether the steel rope is intact, and whether the connection between the various structures is firm. Only after passing the test can the bottom formwork be dismantled.

[0036] During the formwork removal process, the bottom platform 30 is kept horizontal at all times and can be connected and fixed to the beam structure via steel wire rope 42 and guide chain. Each I-beam of the bottom formwork can be directly rotated on the bottom platform 30 until it is parallel to the longitudinal direction of the bridge, and then hoisted to the beam surface using lifting equipment, ensuring the safety of the bottom platform 30. After the segmental bottom formwork is removed, the platform is moved to the next segment using the traveling wheel box 22 to continue removal until all bottom formwork is removed. Then, the formwork removal platform is dismantled, achieving the completion of the entire main arch ring 2 bottom formwork in a single installation and dismantling operation.

[0037] The aforementioned movable formwork removal platform consists of a main truss 10, a walking system 20, a base platform 30, and a suspension system 40. It adopts a standardized design, allowing for prefabrication of components in the factory and on-site assembly, facilitating convenient installation and disassembly and resulting in high construction efficiency. The entire formwork removal operation can be completed using only one removal platform, leading to high construction efficiency, a short construction period, and low construction costs. Simultaneously, it reduces the consumption of steel materials, lowers manufacturing costs, and the standardized design allows for material recycling, reducing procurement costs and avoiding material waste. The height of the removal platform can be adjusted in real-time using a winch 41 pulling a steel wire rope 42 to match the height of different sections, allowing the removed formwork to be directly lowered onto the base platform 30, reducing the risk of injury and damage during handling. Protective railings and safety nets are installed at all open areas, and steel planks are laid in the construction passages to facilitate worker access, ensuring full safety coverage of the work surface and minimizing the possibility of workers working at heights, thus reducing the likelihood of construction risks.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A movable demolding platform, characterized in that, include: Main truss, traveling system, base platform and suspension system; The main truss is movably installed on the box girder via the walking system, so that the main truss can move along the longitudinal direction of the bridge, and the bottom platform is located at the bottom of the main arch ring formwork; The suspension system includes a winch, a wire rope, a fixed pulley, and a trolley block. The winch and the fixed pulley are installed on the main truss. One end of the wire rope is connected to the winch, and the other end of the wire rope passes around the fixed pulley and is connected to the trolley block. The trolley block is connected to the bottom platform.

2. The movable demolding platform according to claim 1, characterized in that, The suspension system is provided in four groups, and the trolley groups of the four suspension systems are respectively connected to the four corners of the base platform.

3. The movable demolding platform according to claim 1, characterized in that, The walking system includes a track and a wheel box. The track is installed on the box girder, and the wheel box is installed at the bottom of the main truss. The wheel box can travel along the track.

4. The movable demolding platform according to claim 1, characterized in that, The main truss includes an upper plane, a lower plane, and connecting rods connecting the upper plane and the lower plane. The winch and the fixed pulley are located on the upper plane.

5. The movable demolding platform according to claim 4, characterized in that, The upper plane is provided with a first steel ramp for installing the winch.

6. The movable demolding platform according to claim 4, characterized in that, The lower plane is provided with a mounting base for connecting to the walking system.

7. The movable demolding platform according to claim 1, characterized in that, The base platform includes an upper platform, a lower platform, and truss members connecting the upper platform and the lower platform. The trolley block is connected to the upper platform.

8. The movable demolding platform according to claim 7, characterized in that, The upper platform is equipped with a second steel scaffolding for supporting construction equipment or personnel.

9. The movable demolding platform according to claim 1, characterized in that, The main truss and the bottom platform are interconnected at least by longitudinally and transversely arranged Bailey beams and support frames.

10. The movable demolding platform according to claim 1, characterized in that, The free face of the main truss is equipped with a first protective railing; and / or The free side of the base platform is equipped with a second protective railing.

Images