Sinking preventing type bridge telescoping device

Abstract

The invention provides a sinking preventing type bridge telescoping device. The device comprises a first comb tooth plate and a second comb tooth plate which are distributed by mutual staggering and can be oppositely telescoped. The device is characterized in that a sinking preventing stopping part laterally extends on the sidewall close to the upper surface, of at least one comb tooth of adjacent comb teeth of the first comb tooth plate and / or the second comb tooth plate; the sinking preventing stopping part is distributed in the length direction of the corresponding comb teeth. The device has the advantages that the sinking preventing stopping part laterally extends on the sidewall close to the upper surface, of at least one comb tooth of adjacent comb teeth of the first comb tooth plate and / or the second comb tooth plate, and the sinking preventing stopping part is distributed in the length direction of the corresponding comb teeth, namely, the sinking preventing baffle is arranged in the length direction of the comb teeth and staggered with the comb teeth equipped with the sinking preventing baffle in the width direction of the comb teeth, and therefore, wheels of a non-motor vehicle can be effectively prevented from sinking in clearances among the comb teeth under the condition that the width of the comb teeth is unchanged, and moreover, the bearing and bending resisting performances of the comb teeth can be ensured.

Description

technical field [0001] The invention relates to a bridge expansion device, in particular to an anti-sink type bridge expansion device. Background technique [0002] At present, bridge expansion devices used in bridge engineering have many structures, among which the comb-shaped bridge expansion device is more common. For the comb-shaped bridge expansion device, in order to ensure the load-bearing and deflection resistance of the comb part of the device, each comb in the comb structure must maintain a certain width. Since the combs are interlaced, the combs The gap between the combs is also relatively large, and the resulting problem is that when non-motor vehicles (especially narrow-wheeled bicycles or electric vehicles) pass by, the wheels may sink from the gaps between the comb teeth, thereby causing traffic Security risks. In order to prevent the wheels of non-motor vehicles from falling into the gaps of the comb teeth, structural improvements are generally carried out ...

AI Technical Summary

Problems solved by technology

For the comb-shaped bridge expansion device, in order to ensure the load-bearing and deflection resistance of the comb part of the device, each comb in the comb structure must maintain a certain width. Since the combs are interlaced, the combs The gap between the combs is also relatively large, and the resulting problem is that when non-motor vehicles (especially narrow-wheeled bicycles or electric vehicles) pass by, the wheels may sink from the gaps between the comb teeth, thereby causing traffic Security risks

In order to prevent the wheels of non-motor vehicles from falling into the gaps of the comb teeth, structural improvements are generally carried out by reducing the gaps between adjacent comb teeth. However, as mentioned above, after the comb teeth gaps are reduced, the width of each comb tooth The size also needs to be reduced accordingly, which will lead to a reduction in the load-bearing and deflection resistance of the comb part of the telescopic device, which will bring hidden dangers to the safety of the bridge

In addition, although some improved bridge expansion devices can prevent the wheels of non-motor vehicles from sinking, they will affect the expansion and contraction function of the bridge expansion device during use, thereby reducing the service life of the expansion device, which will also bring harm to bridge safety. Negative Effects

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