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A kind of anti-overload safety device and operation method of friction flip type road bridge

A safety device, a flip-up technology, applied in the direction of roads, roads, traffic control systems of road vehicles, etc., to prevent bridge damage and reduce the load on bridges

Active Publication Date: 2021-11-23
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is impossible to avoid the potential danger of overloaded vehicles during driving.

Method used

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  • A kind of anti-overload safety device and operation method of friction flip type road bridge
  • A kind of anti-overload safety device and operation method of friction flip type road bridge
  • A kind of anti-overload safety device and operation method of friction flip type road bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A friction flipping anti-overload safety device for road bridges, which includes a pedestal 1, a reversible slider 2, a speed control limit spring 16, a reset unit 17 and an overload alarm unit 18. The pedestal 1 supports the upper reversible slider 2 through three sections of concentric arc friction surfaces, and a resetting ball hinge jack 8 is set between the left arm of the reversible slider 2 (the side in the direction of the vehicle) and the pedestal 1. Speed ​​limit spring 6; corresponding to the top of the jack, a rubber pad with concave arc 9 is installed on the lower surface of the reversible slider 2; this side is provided with a trigger overload alarm unit 18 near the middle cylinder friction hinge 3. The width of the device is controlled according to the width of the roadway, the target turning angle is controlled within the range of 5% to 10%, and the maximum subsidence under the left arm is controlled to be 0.4 to 0.8m. The limit load value is not greater...

Embodiment 2

[0044] For the anti-overload insurance device of the road and bridge of the friction flip type provided in Embodiment 1, since the force of the device is relatively complicated, in order to determine the force of the situation conveniently, a constant force support unit 15 is set on the left and right bases of the pedestal 1, and along the vertical road bridge road The directions are arranged side by side, and it is preferable to set constant force support units 15 on the left arc-shaped friction pair 4 and the right arc-shaped friction pair 5 respectively. The constant force support unit 15 is made up of an anchor rod 19, a spring 20, a partition 21 and a friction block 22. There are holes on the friction block 22. There are holes with two radii on the top and bottom of the hole, which can block the end of the anchor rod 19. When the anchor rod 19 is anchored, it moves together with the anchor rod, the anchor rod 19 passes through the friction block 22 , and the end is stuck i...

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PUM

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Abstract

The present invention provides a kind of anti-overload safety device and its operation method of frictional flip type road bridge. The pedestal supports the reversible slider and the constant force support unit, and the speed control limit spring and the reset unit are arranged between the pedestal and the reversible slider. According to the load of the vehicle, the reversible slider It can form a slope of about 5% to 10%, thereby forcing vehicles to limit traffic, and at the same time, the overload alarm unit issues an overload alarm. The invention uses whether the interface friction force and the total weight of the vehicle are balanced to automatically control whether the vehicle can go on the bridge, limits the load of the vehicle on the bridge, reduces the burden on the bridge, and can effectively prevent bridge damage caused by vehicle overload.

Description

technical field [0001] The invention relates to a friction-turning anti-overload insurance device for road bridges and an operating method thereof, belonging to the technical field of civil engineering road construction. Background technique [0002] Vehicles will cause certain damage to the road, and the damage to bridges caused by overloaded vehicles is more prominent, which has great potential safety hazards. The core load of overloaded and overloaded vehicles far exceeds the design load of the bridge, which will greatly shorten the service life of the bridge and shorten the time for the old bridge to become a dangerous bridge. At present, bridges that may be under heavy loads are mostly protected by monitoring, reinforcement, and load-limiting measures to avoid large losses. Among them, there is still a lack of strict, effective and more automatic methods for load limiting measures. [0003] The Chinese utility model patent with the application number CN201220028274.8 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F13/12G08G1/01
CPCE01F13/12G08G1/0104
Inventor 汪基伟徐博文吴二军冷飞胡雨晴张栋培
Owner HOHAI UNIV
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