Movable construction platform for bridge tower column of cable-stayed bridge

Abstract

The utility model relates to a movable construction platform of a cable-stayed bridge tower column, and belongs to the technical field of bridge maintenance. The two C-shaped platform modules are connected in a closed mode to form an all-dimensional construction platform structure special for surrounding the side face of the bridge tower column of the cable-stayed bridge, and the all-dimensional construction platform structure can be lifted to any height position to conduct construction on the bridge tower column under the cooperation of a suspension system, a lifting machine and a steel wire rope. Meanwhile, aiming at the side face of the bridge tower column with the variable section size, a linear telescopic platform on the inner side is arranged on the basis of the C-shaped platform module for further distance reduction, small-range space adjustment can be conducted when the C-shaped platform module is close to the side face of the bridge tower column, and an auxiliary basket set hung on one side is arranged. And the construction personnel can further conveniently, quickly and directly adjust the operation space at a small distance in the operation process.

Description

Technical Field

[0001] The utility model relates to a movable construction platform for the tower column of a cable-stayed bridge, belonging to the technical field of bridge maintenance. Background Art

[0002] As a supporting structure of the bridge, the tower column bears the main load of the bridge, which is directly related to the safety and service life of the bridge. The tower column is vulnerable to corrosion by the atmosphere and rainwater. After the bridge has been used for a certain period of time, the steel structure of the bridge tower column will show coating deterioration, rust and other conditions to varying degrees, affecting the safety factor of the bridge. Therefore, it is necessary to regularly maintain the surface of the tower column.

[0003] The current general construction platforms for bridge tower columns are relatively simple. Each side of the tower column is constructed separately, and the construction platform is a simple double-hoisting-point fixed type. For example, the double-hoisting-point fixed structure shown in CN110485289A - An inspection platform for the cable-stayed area of the tower column of a retractable double-cable-plane cable-stayed bridge. This structure is not highly applicable to bridges with large variations in tower column dimensions. It is not only prone to problems such as platform tilt during the lifting process, posing safety hazards, but also has certain limitations on load capacity and operating distance. When lifted to a position with a smaller tower column size, it is very difficult to approach the side of the tower column for construction operations. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a movable construction platform for the tower column of a cable-stayed bridge, which is characterized by including:

[0005] C-shaped platform modules, two of which are closed and connected to surround the side of the bridge tower column; each C-shaped platform module includes a long-side platform in sequence, two short-side platforms located on both sides of the long-side platform, and a corner platform connecting the short-side platform and the long-side platform. The long-side platform is provided with a first telescopic guide wheel in contact with the side of the bridge tower column;

[0006] Auxiliary basket groups, suspended on one side of the short-side platform away from the bridge tower column or on one side close to the bridge tower column. The auxiliary basket groups include a plurality of auxiliary basket frames that can be spliced with each other and have different sizes;

[0007] A suspension system, arranged at the top of the bridge tower column. The suspension system includes a suspension mechanism, a suspension bracket connecting the suspension mechanism, a working steel wire rope and a safety steel wire rope arranged on the suspension bracket and connected downward to the C-shaped platform module; the suspension bracket is provided with a driving device for connecting the working steel wire rope and the safety steel wire rope.

[0008] Further, a linear expansion platform is provided between the short-side platform and the side surface of the bridge tower column. The linear expansion platform includes a main basket and two telescopic baskets arranged inside the main basket. The telescopic baskets are connected to the tracks inside the main basket in a matching manner and are allowed to expand and contract towards both sides of the main basket. The expansion and contraction of the telescopic baskets can adjust the lateral operation range, facilitating construction by multiple people. The main basket is provided with a second expansion guide wheel and an auxiliary guide wheel that contact the side surface of the bridge tower column.

[0009] Further, the bottom of the telescopic basket is provided with track guide wheels that cooperate with the tracks, making the expansion and contraction of the telescopic basket more directional and accurate.

[0010] Further, a mounting frame is connected above the main basket, and gantry frames are connected above both the short-side platform and the long-side platform. Hoisting machines are installed on both the mounting frame and the gantry frames and are equipped with safety locks. The hoisting machines are also connected to working steel wires and safety steel wires.

[0011] Further, the gantry frame is also provided with a wire guiding device. The wire guiding device includes a transmission pulley group arranged near the hoisting machine. Both the working steel wire and the safety steel wire are tensioned and matched with the transmission pulley group to prevent the steel wires from being twisted or entangled and ensure the tension of the steel wires.

[0012] Further, the auxiliary basket group is allowed to be suspended on the side of the main basket close to the bridge tower column. A safety guardrail is arranged on the outer periphery of the auxiliary basket. Buckle parts are arranged on both the side part and the top of the auxiliary basket, allowing multiple auxiliary baskets to be stacked and spliced longitudinally or continuously spliced transversely. When the distance between the short-side platform and the side surface of the bridge tower column is relatively far, the operation distance can be reduced or the operation height can be slightly increased by splicing multiple auxiliary baskets.

[0013] Further, the first expansion guide wheel includes an expansion arm and a guide wheel connecting the expansion arm and the side surface of the bridge tower column, allowing the guide wheel to always fit against the side surface of the bridge tower column and slide upward during the lifting process of the C-shaped platform module. The second expansion guide wheel has the same structure as the first expansion guide wheel.

[0014] The beneficial effects of the present utility model:

[0015] The utility model forms an all-round construction platform structure dedicated to surrounding the side of the bridge tower column of the cable-stayed bridge through the closed connection of two C-shaped platform modules, and can be lifted to any height position by the cooperation of a suspension system, a hoist and a steel wire rope to construct the bridge tower column. At the same time, for the side of the bridge tower column with changing cross-sectional dimensions, the utility model is configured with an inner linear telescopic platform on the basis of the C-shaped platform module to further reduce the distance, and can make small-range spatial adjustments when approaching the side of the bridge tower column. In addition, a secondary basket group suspended on one side is also configured to facilitate the construction personnel to further make small-distance operation space adjustments quickly and directly during the operation. The overall facility can realize flexible lifting and range adjustment, and can be applied to the construction of bridge tower columns with various cross-sectional dimensions, with a wide application range, so that the operators will not be limited by the space distance to avoid affecting the construction operation. In addition, the utility model is also equipped with safety steel wire ropes and safety locks to improve the safety and stability of the overall facility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic diagram of the combination of the C-shaped platform module and the secondary basket group installed on the side of the bridge tower column in one embodiment of the utility model;

[0017] Figure 2 FIG. is another schematic diagram of the combination of the C-shaped platform module and the secondary basket group installed on the side of the bridge tower column in one embodiment of the utility model;

[0018] Figure 3 FIG. is a schematic diagram of the combination of the C-shaped platform module and the secondary basket group installed on the side of the bridge tower column after being configured with a linear telescopic platform in one embodiment of the utility model;

[0019] Figure 4 FIG. is a schematic diagram of the structure of the C-shaped platform module in one embodiment of the utility model;

[0020] Figure 5 FIG. is a schematic diagram of the structure of the linear telescopic platform in one embodiment of the utility model;

[0021] In the figure: 1. C-shaped platform module; 2. First secondary basket frame; 3. Second secondary basket frame; 4. Linear telescopic platform; 5. Short-side platform; 6. Corner platform; 7. Long-side platform; 8. Gantry; 9. Hoist; 10. Rope guiding device; 11. Safety lock; 121. First telescopic guide wheel; 122. Second telescopic guide wheel; 13. Main basket; 14. Telescopic basket; 15. Track; 16. Track guide wheel; 17. Auxiliary guide wheel; 18. Mounting bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Embodiment 1

[0026] As Figures 1 - 5 , the present utility model provides a movable construction platform for the bridge tower column of a cable-stayed bridge, which is characterized by comprising:

[0027] C-shaped platform module 1, after two C-shaped platform modules 1 are connected in a closed manner, they surround the side surface of the bridge tower column; each C-shaped platform module 1 includes a long-side platform 7 in sequence, two short-side platforms 5 located on both sides of the long-side platform 7, and a corner platform 6 connecting the short-side platform 5 and the long-side platform 7. The long-side platform 7 is provided with a first telescopic guide wheel 121 in contact with the side surface of the bridge tower column;

[0028] Auxiliary basket group, suspended on one side of the short-side platform 5 away from the bridge tower column or on one side close to the bridge tower column. The auxiliary basket group includes a plurality of auxiliary basket frames that can be spliced with each other and have different sizes, such as a first auxiliary basket 2 and a second auxiliary basket 3;

[0029] The suspension system is arranged at the top of the bridge tower column. The suspension system includes a suspension mechanism, a hanging bracket connecting the suspension mechanism, a working wire rope and a safety wire rope arranged on the hanging bracket and connected downward to the C-shaped platform module 1. The suspension mechanism can be a steel beam structure in the shape of a roof, and an electric pulley can be installed on the hanging bracket as a driving device to drive the working wire rope and the safety wire rope.

[0030] Furthermore, a linear expansion platform 4 is arranged between the short-side platform 5 and the side surface of the bridge tower column. The linear expansion platform 4 includes a main basket 13 and two telescopic baskets 14 arranged inside the main basket 13. The telescopic baskets 14 are connected in cooperation with the tracks 15 inside the main basket 13 and allow the two telescopic baskets 14 to expand and contract toward both sides of the main basket 13. The horizontal operation range can be adjusted by the expansion and contraction of the telescopic baskets 14, facilitating construction by multiple people. The main basket 13 is provided with a second expansion guide wheel 122 and an auxiliary guide wheel 17 in contact with the side surface of the bridge tower column.

[0031] Furthermore, the bottom of the telescopic basket 14 is provided with a track guide wheel 16 that cooperates with the track 15, making the expansion and contraction of the telescopic basket 14 more directional and accurate.

[0032] Furthermore, a mounting frame 18 is connected above the main basket 13, and gantry frames 8 are connected above both the short-side platform 5 and the long-side platform 7. Hoisting machines 9 are installed on both the mounting frame 18 and the gantry frames 8 and are equipped with safety locks 11. The hoisting machines are also connected to the working wire rope and the safety wire rope.

[0033] Furthermore, the gantry frame 8 is also provided with a wire rope guiding device 10. The wire rope guiding device 10 includes a transmission pulley group arranged near the hoisting machine 9. The working wire rope and the safety wire rope are both tensioned and cooperated with the transmission pulley group to prevent the wire ropes from being twisted or entangled and ensure the tension of the wire ropes.

[0034] Furthermore, it is allowed that the auxiliary basket group is suspended on one side of the main basket 13 close to the bridge tower column. A safety guardrail is arranged on the outer periphery of the auxiliary basket. Buckle parts are arranged on both the side and the top of the auxiliary basket, allowing multiple auxiliary baskets to be stacked and spliced longitudinally or continuously spliced horizontally. When the distance between the short-side platform 5 and the side surface of the bridge tower column is relatively far, the operation distance can be reduced or the operation height can be slightly increased by splicing multiple auxiliary baskets.

[0035] Furthermore, the first expansion guide wheel 121 includes an expansion arm and a guide wheel connecting the expansion arm and the side surface of the bridge tower column, allowing the guide wheel to always fit and slide upward along the side surface of the bridge tower column during the lifting process of the C-shaped platform module 1. The second expansion guide wheel 122 has the same structure as the first expansion guide wheel 121.

[0036] Working principle of the utility model:

[0037] When construction needs to be carried out at a position with a relatively low height and a relatively large cross-sectional size of the bridge tower column, the operator can stand on the C-shaped platform module in advance. Subsequently, through the suspension mechanism and the driving device on the hanger to drive the working wire rope and the safety wire rope, the two closed-connected C-shaped platform modules 1 are lifted to the construction height position. The hoist 9 of the gantry 8 is connected above the short-side platform 5 and the long-side platform 7 to improve the lifting efficiency, and a safety lock 11 is configured to ensure that the current position is fixed at the specified position and prevent the wire rope from sliding. Thus, the operator can perform close-range operations. Further, when there are still small limitations in the operation distance, multiple auxiliary baskets can be spliced to shorten the operation distance or slightly increase the operation height.

[0038] When construction needs to be carried out at a position with a relatively high height and a relatively small cross-sectional size of the bridge tower column, the operator can stand on the C-shaped platform module in advance. Subsequently, through the suspension mechanism and the driving device on the hanger to drive the working wire rope and the safety wire rope, the two closed-connected C-shaped platform modules 1 are first lifted to the construction height position, and then the straight-shaped telescopic module is also lifted to the same height and located between the short-side platform 5 and the side of the bridge tower column. The second telescopic guide wheel 122 and the auxiliary guide wheel 17 are in contact with the side of the bridge tower column through the two telescopic baskets 14. Thus, the operator can perform close-range operations. Further, when there are still small limitations in the operation distance, multiple auxiliary baskets can be spliced to shorten the operation distance or slightly increase the operation height.

[0039] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person familiar with this technology can make various modifications and decorations without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. An adjustable construction platform for the bridge tower column of a cable-stayed bridge, characterized in that Comprising: C-shaped platform modules, after two of the C-shaped platform modules are closed and connected, they surround the side surface of the bridge tower column; each of the C-shaped platform modules includes a long-side platform in sequence, two short-side platforms located on both sides of the long-side platform, and a corner platform connecting the short-side platform and the long-side platform. The long-side platform is provided with a first telescopic guide wheel in contact with the side surface of the bridge tower column; Auxiliary basket group, suspended on one side of the short-side platform away from the bridge tower column or on one side close to the bridge tower column. The auxiliary basket group includes a plurality of auxiliary basket frames that can be spliced with each other and have different sizes; Suspension system, arranged at the top of the bridge tower column. The suspension system includes a suspension mechanism, a suspension bracket connecting the suspension mechanism, a working wire rope and a safety wire rope arranged on the suspension bracket and connected downward to the C-shaped platform module; the suspension bracket is provided with a driving device for connecting the working wire rope and the safety wire rope.

2. The movable construction platform for the cable-stayed bridge bridge tower column according to claim 1, characterized in that, An I-shaped telescopic platform is arranged between the short-side platform and the side surface of the bridge tower column. The I-shaped telescopic platform includes a main basket, and two telescopic baskets arranged inside the main basket. The telescopic baskets are connected with the tracks inside the main basket in a matching manner and allow the two telescopic baskets to expand and contract towards both sides of the main basket; the main basket is provided with a second telescopic guide wheel and an auxiliary guide wheel in contact with the side surface of the bridge tower column.

3. The movable construction platform for the cable-stayed bridge tower column according to claim 2, characterized in that, The bottom of the telescopic basket is provided with a track guide wheel that cooperates with the track.

4. The movable construction platform for the cable-stayed bridge tower column according to claim 3, characterized in that, An installation frame is connected above the main basket. Gantry frames are connected above both the short-side platform and the long-side platform. Hoisting machines are installed on both the installation frame and the gantry frames and are equipped with safety locks. The hoisting machines are also connected to the working wire rope and the safety wire rope.

5. The movable construction platform for the cable-stayed bridge pylon according to claim 4, characterized in that, The gantry frame is further provided with a wire rope guiding device. The wire rope guiding device includes a transmission pulley group arranged near the hoisting machine. The working wire rope and the safety wire rope are both tensioned and matched with the transmission pulley group.

6. The movable construction platform for the cable-stayed bridge tower column according to claim 5, wherein, Allow the auxiliary basket group to be suspended on one side of the main basket close to the bridge tower column. A safety guardrail is arranged on the outer periphery of the auxiliary basket.

7. The movable construction platform for the cable-stayed bridge pylon according to claim 6, wherein, Snap-fastening members are arranged on both the side part and the top of the auxiliary basket, allowing a plurality of the auxiliary baskets to be stacked and spliced longitudinally or continuously spliced transversely.

8. The movable construction platform for the cable-stayed bridge tower column according to claim 6, characterized in that, The first telescopic guide wheel includes a telescopic arm and a guide wheel connecting the telescopic arm and the side surface of the bridge tower column, allowing the guide wheel to always fit on the side surface of the bridge tower column and slide upward during the lifting process of the C-shaped platform module; the second telescopic guide wheel has exactly the same structure as the first telescopic guide wheel.

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