Double-layer protection platform applied to construction of inner cavity of main tower

Abstract

The utility model discloses a double-layer protection platform applied to construction of an inner cavity of a main tower, which is composed of an upper-layer protection platform and a lower-layer protection platform, and the upper-layer protection platform is composed of M24 climbing cones, customized brackets, I-14 cross beams and riffled plates; the lower-layer protection platform is composed of lifting ropes and a steel wire protection net. When different sections of the main tower are circularly constructed, the upper-layer protection platform can be modularly disassembled and installed in place through all parts, and then the lower-layer protection platform is lifted and installed in place in a lifting rope lifting mode. Through the mode that the upper-layer protection platform and the lower-layer protection platform composed of the upper-layer protection platform and the lower-layer protection platform are sequentially and circularly installed or lifted, the protection platform always exists in an inner cavity of the main tower during the construction period of each section of the main tower. The main tower inner cavity safety protection device has the advantages of being simple in structure, high in applicability, stable, firm, high in overall strength, good in safety protection effect and high in standardization degree, and can be suitable for main tower inner cavities of various structural sizes.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to a double-layer protective platform for use in the construction of the inner cavity of the main tower. Background Technology

[0002] With the rapid development of modern bridge construction in China, the scale of main tower construction is constantly breaking records. The tower body is generally a hollow, thin-walled reinforced concrete structure, and the hollow inner cavity of the main tower usually runs through the entire tower body, with the inner cavity suspended up to 100 meters above the ground. During the installation of the inner steel reinforcement and inner formwork of the main tower, a protective platform must be installed inside the main tower cavity to ensure the safety of high-altitude construction.

[0003] Conventional construction of the main tower's internal cavity involves placing multiple steel pipes or channel steel crossbars across the concrete top surface of the already poured tower body, and then laying steel planks on these crossbars to form a makeshift construction platform. This platform suffers from poor stability, significant safety hazards, and fails to meet the standardized requirements of modern bridge construction. While permanent internal maintenance ladders are often used as protective platforms during main tower cavity construction, this does not provide complete enclosed high-altitude protection, leaving large areas without adequate protection and posing significant safety risks. Currently, there is an urgent need to design a high-altitude protective platform that can provide complete safety coverage for the main tower's internal cavity, while also being stable, reliable, easy to install and dismantle, and convenient for construction. Summary of the Invention

[0004] The purpose of this invention is to provide a double-layer protective platform for construction inside the main tower cavity.

[0005] The purpose of this utility model is achieved as follows:

[0006] A double-layer protective platform for construction within the main tower cavity is characterized by comprising an upper protective platform and a lower protective platform. The upper protective platform consists of M24 climbing cones, custom-made brackets, I-beams (14mm crossbeams), and checkered steel plates. The M24 climbing cones of the upper protective platform are pre-embedded symmetrically in pairs on the inner wall of the main tower cavity during the construction of each main tower segment. The pre-embedding spacing of each pair of M24 climbing cones is 2 meters, and the pre-embedding position is 50 cm below the top surface of the inner wall of the main tower cavity. On each pair of M24 climbing cones… Custom-made brackets with holes are installed by bolts; several I-beams (14mm) serving as load-bearing beams for the upper protective platform are installed on the custom-made brackets; a single piece of patterned steel plate serving as the platform panel is spot-welded and fixed on the top of the several I-beams; the lower protective platform consists of suspension ropes and steel wire mesh, with the upper ends of several suspension ropes fixed to several custom-made brackets of the upper protective platform, and the lower ends of several suspension ropes fixed to the edge of the steel wire mesh, suspending the steel wire mesh as the lower protective platform.

[0007] Furthermore, the custom-made bracket is assembled from multiple welded steel plates, with holes drilled in the side plates for suspending the ropes of the lower protective platform.

[0008] Furthermore, the patterned steel plate is 1cm thick and covers the entire inner cavity of the main tower to achieve a closed protection for the inner cavity of the main tower.

[0009] Furthermore, the steel wire mesh of the lower protective platform is installed 1m directly below the upper protective platform to serve as a protective platform during the installation and dismantling of the upper protective platform.

[0010] This utility model consists of an upper protective platform and a lower protective platform. The upper protective platform is composed of an M24 climbing cone, a custom-made bracket, an I-beam (14mm crossbeam), and a checkered steel plate. The lower protective platform is composed of hoisting ropes and a steel wire mesh. During the cyclical construction of different segments of the main tower, the upper protective platform can be modularly disassembled and installed, and then the lower protective platform can be lifted and installed using hoisting ropes. By sequentially installing or lifting the upper and lower protective platforms, a protective platform is always present inside the main tower cavity during the construction of each segment.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. Simple structure and strong applicability. Both the upper and lower protective platforms are modularly assembled from various components, making them suitable for the inner cavity of main towers of various structural sizes.

[0013] 2. Stable and reliable with high overall strength. The main load-bearing components of both the upper and lower protective platforms are made of high-strength steel, and are connected to the inner cavity of the main tower by climbing cones and bolts to form a whole, ensuring overall stability and reliability;

[0014] 3. Excellent safety protection. The cyclical installation and lifting of the upper and lower protective platforms ensures that a protective platform is always present inside the main tower cavity during the construction of each segment. Simultaneously, the steel wire mesh of the lower protective platform and the checkered steel plate of the upper protective platform provide full coverage of the main tower cavity, resulting in excellent protection.

[0015] 4. High degree of standardization. The entire platform is composed of standardized materials, providing fully enclosed and robust protection. Attached Figure Description

[0016] Figure 1 This is a schematic elevation view of an embodiment of the present utility model;

[0017] Figure 2 This is a plan view of an embodiment of the present utility model;

[0018] Figure 3This is a front view of a customized cow leg according to an embodiment of the present utility model;

[0019] Figure 4 This is a side view of the customized cow leg according to an embodiment of the present utility model;

[0020] Figure 5 This is a top view of the customized cow leg according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the first step of the installation cycle in an embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the second step of the installation cycle in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the third step of the installation cycle in an embodiment of this utility model;

[0024] Figure 9 This is a schematic diagram of the fourth step of the installation cycle in an embodiment of this utility model;

[0025] In the diagram: 1. M24 climbing cone; 2. Customized bracket; 3. I-14 crossbeam; 4. Patterned steel plate; 5. Suspension rope; 6. Steel wire mesh; 7. Main tower segment; 8. Main tower cavity; 9. Main tower cavity wall. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings.

[0027] A double-layer protective platform for construction within the main tower cavity comprises an upper protective platform and a lower protective platform. The upper protective platform consists of M24 climbing cones 1, custom-made brackets 2, I-beams 3, and checkered steel plates 4. The M24 climbing cones 1 of the upper protective platform are pre-embedded symmetrically in pairs during the construction of each main tower segment 7, 50cm below the top surface of the inner wall 9 of the main tower cavity, with a spacing of 2m. Each pair of M24 climbing cones 1 is bolted with a... Custom brackets 2 with holes; I-beams 3 are laid on two custom brackets 2 side by side on the left and right sides, and a whole piece of patterned steel plate 4 as the platform panel is spot welded and fixed on the top of several I-beams 3; the lower protective platform is composed of suspension ropes 5 and steel wire protective net 6. The upper ends of several suspension ropes 5 are respectively fixed to several custom brackets 2 of the upper protective platform, and the lower ends of several suspension ropes 5 are respectively fixed to the edge of the steel wire protective net 6, suspending the steel wire protective net 6 as the lower protective platform.

[0028] Custom-made bracket 2 is assembled from multiple welded steel plates. Holes are cut into the side plates of custom-made bracket 2 for suspending the hoisting ropes 5 of the lower protective platform. Four additional custom-made brackets 2 need to be manufactured for the installation cycle of the lower protective platform.

[0029] The patterned steel plate 4 is 1cm thick and its area covers the entire inner cavity 8 of the main tower, so as to achieve the closed protection of the entire inner cavity 8 of the main tower.

[0030] The steel wire mesh 6 of the lower protective platform is installed 1m directly below the upper protective platform.

[0031] Working principle:

[0032] Step 1: The main tower is typically divided into several main tower segments 7, and construction proceeds segment by segment from bottom to top. During the construction of the first main tower segment 7, an M24 climbing cone 1 is pre-embedded at the top. After the first main tower segment 7 is completed, the upper and lower protective platforms of the main tower cavity are installed sequentially, supported by the pre-embedded M24 climbing cone 1, serving as the main tower cavity protective platform during the construction of the second main tower segment 7. Simultaneously, an M24 climbing cone 1 is also pre-embedded at the top during the construction of the second main tower segment 7. After the second main tower segment 7 is completed, the upper and lower protective platforms located at the top of the first main tower segment 7 are removed and installed at the top of the second main tower segment 7, serving as the main tower cavity protective platform during the construction of the third main tower segment 7.

[0033] Step 2: Before dismantling, four custom-made brackets 2, which are additionally manufactured for the installation cycle of the lower protective platform, need to be pre-installed on the top of the second main tower segment 7 and connected to the pre-embedded M24 climbing cones 1 with bolts. Then, the hoisting ropes 5 of the lower protective platform of the first main tower segment 7 are extended and installed on the custom-made brackets 2 that have been pre-installed on the top of the second main tower segment 7.

[0034] Step 3: Then remove the upper protective platform of the first main tower segment 7 and install it on top of the second main tower segment 7. During this period, the lower protective platform serves as the high-altitude protective platform for the inner cavity of the main tower.

[0035] Step 4: After the upper protective platform of the second main tower segment 7 is installed in place, the workers stand on the upper protective platform and use the lifting rope 5 to lift the steel wire protective net 6, which is still on the lower protective platform of the first main tower segment 7, to a position 1m directly below the upper protective platform, thus completing the installation of the lower protective platform of the second main tower segment 7.

[0036] Similarly, subsequent main tower segments 7 are installed and removed in a cyclical manner, alternating between the upper and lower protective platforms. This cyclical installation and removal of the upper and lower protective platforms ensures that a protective platform remains within the main tower cavity 8 throughout the construction of main tower segment 7.

[0037] This utility model is not limited to the above-described preferred embodiment. Anyone can derive other products in various forms under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that is the same as or similar to this utility model is within its protection scope.

Claims

1. A double-layer protective platform for construction within the main tower cavity, characterized in that: It consists of an upper protective platform and a lower protective platform. The upper protective platform is composed of M24 climbing cones, custom brackets, I-14 crossbeams, and patterned steel plates. The M24 climbing cones of the upper protective platform are pre-embedded symmetrically in the inner wall of the main tower during the construction of each main tower segment, with two cones per group. Custom brackets with holes are installed on each group of M24 climbing cones by bolts. Several I-14 crossbeams, which serve as the load-bearing crossbeams of the upper protective platform, are installed on the custom brackets. A whole piece of patterned steel plate, which serves as the platform panel, is spot-welded and fixed on the top of the I-14 crossbeams. The lower protective platform consists of suspension ropes and a steel wire mesh. The upper ends of several suspension ropes are fixed to several custom brackets of the upper protective platform, and the lower ends of several suspension ropes are fixed to the edge of the steel wire mesh, suspending the steel wire mesh as the lower protective platform.

2. The double-layer protective platform for construction within the main tower cavity according to claim 1, characterized in that: The custom-made bracket is assembled from multiple welded steel plates, and the side plates of the custom-made bracket have holes for hanging ropes for the lower protective platform.

3. The double-layer protective platform for construction within the main tower cavity according to claim 1, characterized in that: The upper protective platform has M24 climbing cones, which are arranged in groups of two. The pre-embedded spacing of each group of M24 climbing cones is 2m, and the pre-embedded position is 50cm below the top surface of the inner wall of the main tower.

4. The double-layer protective platform for construction within the main tower cavity according to claim 1, characterized in that: As the main tower is constructed segment by segment, the upper and lower protective platforms inside the main tower cavity are installed, removed, and raised in a cyclical manner to ensure that a protective platform is always present inside the main tower cavity.

5. The double-layer protective platform for construction within the main tower cavity according to claim 1, characterized in that: The lower protective platform is installed 1m directly below the upper protective platform, serving as a protective platform for the main tower cavity during the dismantling and installation of the upper protective platform.

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