A suspended platform for bridges

Abstract

This utility model proposes a suspended platform for bridges, comprising: a platform body, a swing arm, a damping wheel, and a spring rod. The platform body is suspended from the lower part of the bridge by steel cables. A guardrail is provided around the outer perimeter of the platform body, and a mounting base and an extension rod are provided on the guardrail. One end of the swing arm is hinged to the mounting base, and the damping wheel is mounted on the other end of the swing arm. One end of the spring rod is hinged to the end of the extension rod. This utility model, by setting a swing arm on the guardrail, presses the damping wheel against the bottom of the bridge under the action of the spring rod. When the platform body sways, the damping wheel rotates. The damper can resist the rotation of the damping wheel, converting kinetic energy into internal energy, allowing the platform body to quickly eliminate swaying. The swing arm's swing allows the damping wheel to adjust itself according to the curvature of the bridge bottom, adapting to different bridge types. The pressure of the damping wheel on the bridge is controlled by the spring rod to maintain appropriate pressure, preventing swaying while avoiding excessive pressure that could cause safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a suspended platform for bridges. Background Technology

[0002] During bridge construction and maintenance, personnel are needed to perform construction or inspection at the bottom of the bridge. Suspended platforms are typically suspended by steel cables. For example, during high-pressure water cleaning or spraying protective coatings, the reaction force of the spray gun can cause the suspended platform to sway, affecting the workers' work. Therefore, people have designed suspended platforms to accommodate swaying bridges. For instance, Chinese Patent Application No. 202123034741.6 discloses a suspended platform for bridge construction, including a main body. Both ends of the main body are equipped with balancing connecting frames, and a suspension rope is fixedly connected to the middle of each balancing connecting frame. The other end of each suspension rope is equipped with a hanging mechanism. The main body has symmetrically arranged columns on its outer side, and telescopic rods are slidably connected to the inner side of each column. A stabilizing block is located at the top of the telescopic rod. The telescopic rod slides and extends within the column, causing the stabilizing block to contact the bottom of the bridge main body. When using suspended platforms, since many bridge bases are arched, the telescopic rods cannot effectively follow the changes in the curvature of the bridge base. Furthermore, the end face of the stabilizing block is flat and partially cuts tightly into the bridge, affecting its anti-sway effect. Secondly, because the suspended platform is mainly suspended by a cantilever beam structure formed by a counterweight vehicle at the top, the pressure applied by the stabilizing block to the bridge base is difficult to control. If the pressure is too low, the friction is small and it fails to prevent swaying. Conversely, if the pressure applied by the stabilizing block to the bridge base is too high, the reaction force will pull the counterweight vehicle through the suspended platform, causing one side of the counterweight vehicle to tilt, creating a safety hazard. Therefore, a suspended platform for bridges is needed. This platform uses a swing arm to press a damping wheel against the bridge base. The swing arm and damping wheel can adjust automatically according to the curvature of the bridge base to adapt to different bridge types. The pressure of the damping wheel on the bridge is controlled by a spring rod to maintain appropriate pressure, preventing swaying while avoiding excessive pressure that could cause safety hazards. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a suspended platform for bridges. A swing arm presses a damping wheel against the bridge floor. The swing arm and damping wheel can automatically adjust to changes in the curvature of the bridge floor, adapting to different bridge types. The pressure exerted by the damping wheel on the bridge is controlled by a spring rod to maintain appropriate pressure, preventing swaying while avoiding excessive pressure that could pose a safety hazard.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a suspended platform for bridges, comprising: a platform body, a swing arm, a damping wheel, and a spring rod. The platform body is suspended from the lower part of the bridge by steel cables. A guardrail is provided around the outer perimeter of the platform body, and the guardrail is provided with a mounting seat and an extension rod. One end of the swing arm is hinged to the mounting seat, and the damping wheel is installed at the other end of the swing arm. One end of the spring rod is hinged to the end of the extension rod, and the other end of the spring rod is hinged to the middle of the swing arm. The swing arm tilts upward under the push of the spring rod, and the damping wheel is pressed against the bottom of the bridge by the swing arm.

[0006] Furthermore, a damper is provided at the end of the swing arm, and a damping wheel is connected to the damper.

[0007] Furthermore, the damper includes a housing, a first damping plate, a second damping plate, and a connecting shaft. The second damping plates are spaced apart inside the housing, the connecting shaft is installed in the housing and passes through the second damping plates, the first damping plates are coaxially installed on the connecting shaft and are located between the second damping plates, and the housing is filled with damping oil.

[0008] Furthermore, the distance between the first damping plate and the second damping plate is 10mm to 15mm, and there are 3 to 6 first damping plates.

[0009] Furthermore, damping wheels are provided on both sides of the main body of the suspended basket, with 2 to 4 damping wheels on each side of the main body of the suspended basket.

[0010] Furthermore, the damping wheel is made of rubber.

[0011] The beneficial effects of this utility model are as follows: By setting a swing arm on the guardrail, the swing arm presses the damping wheel against the bottom of the bridge under the action of the spring rod. When the main body of the suspended basket sways, the damping wheel will rotate. The damper can resist the rotation of the damping wheel, converting kinetic energy into internal energy, so that the main body of the suspended basket can quickly eliminate swaying. The swing arm allows the damping wheel to adjust itself according to the curvature of the bridge bottom, adapting to different bridge types. The pressure of the damping wheel on the bridge is controlled by the spring rod to maintain appropriate pressure, which can prevent swaying while avoiding excessive pressure that may cause safety hazards. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the swing arm of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the damper of this utility model;

[0015] In the diagram: 1-Suspended basket body, 2-Swing arm, 3-Damping wheel, 4-Spring rod, 5-Guardrail, 6-Mounting base, 7-Extension rod, 8-Damper, 81-Housing, 82-First damping plate, 83-Second damping plate, 84-Connecting shaft. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, one embodiment of this utility model provides a suspended platform for bridges, comprising: a platform body 1, a swing arm 2, a damping wheel 3, and a spring rod 4. The platform body 1 is suspended from the lower part of the bridge by steel cables. A guardrail 5 is provided around the outer perimeter of the platform body 1, and a mounting seat 6 and an extension rod 7 are provided on the guardrail 5. One end of the swing arm 2 is hinged to the mounting seat 6, and the damping wheel 3 is installed at the other end of the swing arm 2. One end of the spring rod 4 is hinged to the end of the extension rod 7, and the other end of the spring rod 4 is hinged to the middle of the swing arm 2. The swing arm 2 tilts upward under the push of the spring rod 4, and the damping wheel 3 is pressed against the bottom of the bridge by the swing arm 2.

[0020] When workers are operating on the suspended platform 1 or when the suspended platform 1 is shaken by the wind, the shaking along the long direction of the suspended platform 1 is less likely to occur. Therefore, this device directly eliminates the shaking in this direction through the friction between the damping wheels 3 and the bottom of the bridge. During operation, since most work is done on both sides of the suspended platform 1, the shaking is more likely to occur along the short direction of the suspended platform 1. When shaking occurs, the damping wheels 3 roll at the bottom of the bridge, thereby driving the first damping plate 82 to rotate in the damper 8. The damper 8 generates resistance to prevent the damping wheels 3 from rotating, thereby quickly converting the kinetic energy of the shaking into internal energy and dissipating it, so that the suspended platform 1 can quickly eliminate the shaking and return to stability. The damping wheel 3, through the action of the spring rod 4, causes the swing arm 2 to press the damping wheel 3 against the bottom of the bridge. When the main body 1 of the suspended platform sways, the damping wheel 3 can rotate. The pressure of the damping wheel 3 on the bottom of the bridge is controlled by the elastic force of the spring rod 4. Designers can calculate and select a spring rod 4 with appropriate elastic force based on parameters such as the weight of the counterweight vehicle, the self-weight of the main body 1 of the suspended platform, the load capacity, and the swing arm 2, to avoid excessive pressure that could cause the counterweight vehicle to become unstable. The angle of the swing arm 2 can follow the curvature of the bridge bottom, thereby adapting to the curved surface of the bridge bottom and improving its applicability.

[0021] In one specific embodiment, a damper 8 is provided at the end of the swing arm 2, and a damping wheel 3 is connected to the damper 8. The damping wheel 3 is mainly used to provide damping and prevent the rotation of the damping wheel 3, thereby quickly eliminating swaying by converting kinetic energy into internal energy and ensuring the safety of personnel working on the suspended platform body 1.

[0022] Preferably, the damper 8 includes a housing 81, a first damping plate 82, a second damping plate 83, and a connecting shaft 84. The second damping plates 83 are spaced apart inside the housing 81. The connecting shaft 84 is installed in the housing 81 and passes through the second damping plates 83. The first damping plates 82 are coaxially mounted on the connecting shaft 84 and are located between the second damping plates 83. The housing 81 is filled with damping oil. The damping oil is silicone oil commonly used in dampers, which has a high viscosity. When the connecting shaft 84 drives the first damping plate 82 to rotate between the second damping plates 83, the high viscosity damping oil generates resistance, hindering the rotation of the damping wheel 3 and achieving the purpose of eliminating swaying.

[0023] Specifically, the distance between the first damping plate 82 and the second damping plate 83 is 10mm to 15mm, so that when the first damping plate 82 and the second damping plate 83 rotate, a large resistance can be generated. There are 3 to 6 first damping plates 82. Multiple first damping plates 82 can increase the resistance encountered when rotating in damping oil, thereby eliminating the shaking.

[0024] Specifically, damping wheels 3 are provided on both sides of the suspended platform body 1, with 2 to 4 damping wheels 3 on each side of the suspended platform body 1, so that the damping wheels 3 at all parts of the suspended platform body 1 are in uniform contact with the bottom of the bridge, and the swaying can be eliminated smoothly when shaking.

[0025] Preferably, the damping wheel 3 is made of rubber. Rubber is soft and has a high coefficient of friction, which allows the damping wheel 3 to rotate under the bridge, quickly eliminate swaying, and restore the stability of the suspended basket body 1.

[0026] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A basket for a bridge, characterized in that, include: The suspended basket body (1), swing arm (2), damping wheel (3), and spring rod (4) are provided. The suspended basket body (1) is suspended from the lower part of the bridge by steel cables. The outer perimeter of the suspended basket body (1) is provided with guardrail (5). The guardrail (5) is provided with mounting seat (6) and extension rod (7). One end of the swing arm (2) is hinged to the mounting seat (6), and the damping wheel (3) is installed at the other end of the swing arm (2). One end of the spring rod (4) is hinged to the end of the extension rod (7), and the other end of the spring rod (4) is hinged to the middle of the swing arm (2). The swing arm (2) is tilted upward under the push of the spring rod (4), and the damping wheel (3) is pressed against the bottom of the bridge by the swing arm (2).

2. A basket for bridges according to claim 1, characterized in that, The swing arm (2) is provided with a damper (8) at its end, and the damping wheel (3) is connected to the damper (8).

3. A suspended platform for bridges according to claim 2, characterized in that, The damper (8) includes a housing (81), a first damping plate (82), a second damping plate (83), and a connecting shaft (84). The second damping plates (83) are spaced apart inside the housing (81). The connecting shaft (84) is installed in the housing (81) and passes through the second damping plates (83). The first damping plate (82) is coaxially installed on the connecting shaft (84) and is located between the second damping plates (83). The housing (81) is filled with damping oil.

4. A suspended platform for bridges according to claim 3, characterized in that, The distance between the first damping plate (82) and the second damping plate (83) is 10mm to 15mm, and there are 3 to 6 first damping plates (82).

5. A suspended platform for bridges according to claim 1, characterized in that, The main body (1) of the suspended basket is provided with damping wheels (3) on both sides, and each side of the main body (1) of the suspended basket is provided with 2 to 4 damping wheels (3).

6. A suspended platform for bridges according to claim 1, characterized in that, The damping wheel (3) is made of rubber.

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