Protective device for replacement construction of active-service bridge handrail

Abstract

The utility model provides a protective device for replacement construction of an active-service bridge handrail. The protective device comprises a moving unit, a stabilizing unit, a transverse telescopic unit, a vertical telescopic unit and a protective unit. The upper portion of the moving unit is fixedly connected with a stabilizing unit. The top of the stabilizing unit is connected with one end of a transverse telescopic unit. The end, away from the stabilizing unit, of the transverse telescopic unit is connected with the top end of the vertical telescopic unit. The lower end of the vertical telescopic unit is connected with one side of the protection unit, and the active bridge handrail is located above the protection unit; according to the protection device, on the condition that under-bridge traffic is normally conducted, replacement and maintenance work can be conducted on the active service bridge handrail, the protection device can move along with a construction section for protection, and the protection convenience is effectively improved; the protection unit can be used as an anti-falling net and can also be used as a manual aerial work hanging basket, multiple purposes are achieved, time and labor are saved during erection, and personnel safety is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering, and in particular relates to a protective device for the replacement construction of railings of existing bridges. Background Art

[0002] During the long-term use of urban bridges and highway bridges, the guardrails on both sides often wear out early due to material problems. Therefore, the replacement and repair of guardrails is an important and frequent task in bridge maintenance. However, during the construction process, the removal and installation of guardrails are often difficult due to the lack of suitable stress points and locations for setting up formal edge protection. Therefore, the safety protection during the replacement of guardrails and the maintenance of traffic under the bridge become a problem.

[0003] At present, in order to ensure traffic safety, traffic under the bridge is generally interrupted and closed for construction, but this will cause traffic congestion and bring inconvenience to people's travel; if protection is set up to ensure normal traffic, simple protection will have great safety hazards and will be inconvenient for construction.

[0004] Therefore, it is urgent to design a protective device that can not interrupt the traffic under the bridge and ensure the safety of traffic participants and construction workers. Utility Model Content

[0005] The utility model provides a protective device for the replacement construction of active bridge railings, which is used to solve the problem in the prior art that it is impossible to ensure normal traffic and safety under the bridge when replacing and repairing active bridge guardrails.

[0006] The utility model provides a protective device for replacing the guardrails of an existing bridge, comprising a moving unit, a stabilizing unit, a horizontal telescopic unit, a vertical telescopic unit and a protective unit;

[0007] The upper part of the movable unit is fixedly connected to the stabilizing unit, and the top of the stabilizing unit is connected to one end of the horizontal telescopic unit; the end of the horizontal telescopic unit away from the stabilizing unit is connected to the top of the vertical telescopic unit; the lower end of the vertical telescopic unit is connected to one side of the protective unit, and the active bridge railing is located above the protective unit.

[0008] Compared with the existing technology, the benefits of the present invention are: the protective device can replace and repair the existing bridge railings while ensuring the normal traffic under the bridge. The protective device can move with the construction section for protection, effectively improving the convenience of protection; the protective unit can be used as an anti-fall net and as a hanging basket for artificial high-altitude operations, realizing multiple uses of one machine; the protective device can be used in many scenarios, and it saves time and effort to set up, effectively ensuring the safety of personnel.

[0009] Furthermore, the mobile unit is a cart including a carriage, and a stabilizing unit is fixedly connected to the carriage of the cart.

[0010] Furthermore, the stabilizing unit includes two groups of steel trusses and counterweight blocks, and the two groups of steel trusses are arranged parallel and vertically and perpendicular to the active bridge railings.

[0011] Furthermore, the transverse telescopic unit includes a transverse fixed tube and a transverse movable tube, and the transverse fixed tube and the transverse movable tube are nested and slidably connected;

[0012] One end of the transverse fixed tube away from the transverse movable tube is fixedly connected to the top of the stabilizing unit, and one end of the transverse movable tube away from the transverse fixed tube is connected to the top of the vertical telescopic unit.

[0013] Furthermore, the vertical telescopic unit includes a steel truss that can be telescoped vertically.

[0014] Furthermore, the protection unit is a steel platform frame with enclosure structures on all sides.

[0015] Furthermore, the outer facade of the protection unit is covered with a dense mesh protection net. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic front view of a protective device in one embodiment of the present utility model;

[0017] Figure 2 This is a partial schematic diagram of a protective device in one embodiment of the present utility model;

[0018] Figure 3 It is a partial schematic diagram of a protective device in one embodiment of the present utility model.

[0019] Explanation of the accompanying symbols: 1. Bridge body; 2. Moving unit; 3. Stabilizing unit; 4. Horizontal fixed tube; 5. Counterweight block; 6. Horizontal movable tube; 7. Vertical telescopic unit; 8. Protection unit; 9. Railing. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1 to 3The utility model provides a protective device for replacing the guardrail 9 of an existing bridge, comprising a moving unit 2, a stabilizing unit 3, a transverse telescopic unit, a vertical telescopic unit 7 and a protective unit 8;

[0022] The upper part of the mobile unit 2 is fixedly connected to the stabilizing unit 3, and the top of the stabilizing unit 3 is connected to one end of the horizontal telescopic unit; the end of the horizontal telescopic unit away from the stabilizing unit 3 is connected to the top of the vertical telescopic unit 7; the lower end of the vertical telescopic unit 7 is connected to one side of the protective unit 8, and the active bridge railing 9 is located above the protective unit 8.

[0023] The protective device provided by the utility model can replace and repair the existing bridge railings 9 while ensuring the normal traffic under the bridge. The protective device can move with the construction section for protection, effectively improving the convenience of protection; the protective unit 8 can be used as an anti-fall net and also as a hanging basket for artificial high-altitude operations, realizing multiple uses of one machine; the protective device can be used in many scenarios, and the installation is time-saving and labor-saving, effectively ensuring the safety of personnel.

[0024] In a specific embodiment, the mobile unit 2 is a cart including a carriage, and the stabilizing unit 3 is fixedly connected to the carriage of the cart; the carriage body is made of steel, and a steel truss is welded to the bottom of the carriage.

[0025] In one embodiment, the stabilization unit 3 comprises two sets of steel trusses and counterweights 5. The two sets of steel trusses are arranged parallel and vertically, perpendicular to the existing bridge railings 9. The steel trusses are welded to a transport trolley, with two left and right sets connected by a steel frame. The counterweights 5 are sheet-like metal counterweights 5, which can be increased in number according to weight requirements and stacked directly inside the transport trolley.

[0026] In a specific embodiment, the transverse telescopic unit includes a transverse fixed tube 4 and a transverse movable tube 6, which are nested and slidably connected; the end of the transverse fixed tube 4 away from the transverse movable tube 6 is fixedly connected to the top of the stabilizing unit 3, and the end of the transverse movable tube 6 away from the transverse fixed tube 4 is connected to the top of the vertical telescopic unit 7; the transverse fixed tube 4 and the transverse movable tube 6 are high-strength square steel tubes; the transverse fixed tube 4 is two high-strength steel tubes, which are respectively connected to the steel trusses and have a hollow shape.

[0027] The vertical telescopic unit 7 includes a steel truss that can be telescoped in the vertical direction and is located on the vertical rod of the protection unit 8, so that the protection unit 8 can move up and down in the vertical direction within a certain range.

[0028] In one embodiment, the protective unit 8 is a steel platform frame with a surrounding enclosure. The exterior of the protective unit 8 is covered with a dense mesh protective net. The protective unit 8 is a steel frame structure composed of small rods connected together. It is assembled during operation and can be disassembled and loaded onto a truck for storage after completion. Connected to the steel truss via high-strength square steel pipes, it provides primary protection and fall prevention. During operation, a dense mesh anti-fall net can be attached to the exterior of the frame.

[0029] During use, when the guardrail 9 of the bridge in service needs to be dismantled, installed and maintained, the protective device is towed to the top of the bridge body 1 by a driving vehicle, adjusted to the appropriate position along the bridge, and the counterweight 5 is stacked according to the weight requirement. Then, the frame components are assembled and connected, and the horizontal distance of the protective unit 8 is adjusted to the appropriate position through the length of the horizontal movable tube 6 high-strength square steel pipe. Then, the vertical position of the protective unit 8 is adjusted through the vertical telescopic unit 7 to achieve the best protective effect. After the adjustment is completed, the facade of the protective unit 8 is covered with a dense protective net to prevent small broken objects and tools from falling. After all is completed, the subsequent construction of the guardrail 9 can be carried out normally. The protective device can be moved as the construction section changes. In addition, during the construction process, a steel plate is placed on the bottom plate of the frame. The device can also be used as a hanging basket for construction personnel, which can facilitate high-altitude mobile construction and allow normal traffic under the bridge.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A protective device for replacing the guardrails of an existing bridge, characterized in that: It includes a mobile unit, a stabilizing unit, a horizontal telescopic unit, a vertical telescopic unit and a protective unit; The upper part of the movable unit is fixedly connected to the stabilizing unit, and the top of the stabilizing unit is connected to one end of the horizontal telescopic unit; the end of the horizontal telescopic unit away from the stabilizing unit is connected to the top of the vertical telescopic unit; the lower end of the vertical telescopic unit is connected to one side of the protective unit, and the active bridge railing is located above the protective unit.

2. The protective device for replacing the guardrails of an active bridge according to claim 1 is characterized in that: The mobile unit is a cart comprising a carriage, and a stabilizing unit is fixedly connected inside the carriage of the cart.

3. The protective device for replacing the guardrails of an active bridge according to claim 2 is characterized in that: The stabilizing unit includes two groups of steel trusses and counterweight blocks, and the two groups of steel trusses are arranged parallel and vertically and perpendicular to the active bridge railings.

4. The protective device for replacing the guardrails of an active bridge according to claim 3 is characterized in that: The transverse telescopic unit includes a transverse fixed tube and a transverse movable tube, wherein the transverse fixed tube and the transverse movable tube are nested and slidably connected; One end of the transverse fixed tube away from the transverse movable tube is fixedly connected to the top of the stabilizing unit, and one end of the transverse movable tube away from the transverse fixed tube is connected to the top of the vertical telescopic unit.

5. The protective device for replacing the guardrails of an active bridge according to claim 4 is characterized in that: The vertical telescopic unit includes a steel truss that can be telescoped vertically.

6. The protective device for replacing the guardrails of an active bridge according to claim 5 is characterized in that: The protection unit is a steel platform frame with enclosure structures on all sides.

7. The protective device for replacing the guardrails of an active bridge according to claim 6 is characterized in that: The outer facade of the protection unit is covered with a dense mesh protection net.

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