RU176731U1 - Device for protecting bridge piers against floating trees, branches and bushes - Google Patents

Abstract

The invention relates to the operation of bridges and can be used to protect bridge piers from floating trees, branches and bushes. The technical result achieved by the implementation of the claimed utility model is to protect bridge piers on mountain rivers from floating trees, branches and bushes without formation The specified technical result is achieved by the fact that the fixed part of the device is made in the form of a restrictive ring installed above the low-water level, and the movable part l is made in the form of a rotary ring that rotates relative to the restrictive ring and has horizontal and vertical blades, the number of blades is odd, and the rotary ring and blades are gummed.

Description

The utility model relates to the operation of bridges and can be used to protect bridge piers from floating trees, branches and bushes.

Known devices for protecting hydraulic structures from floating trees, shrubs and fins. For example, “Device for protecting bridges from floating trees” (patent RU RU 2560616, publ. 08.20.2015), according to which in the river channel in the left-bank and right-bank sidewalks of riffles near bridges, barrier control structures are arranged in the form of pile rows inclined along the course of the current metal pipes, or rails, or concrete piles. This device allows the retention of floating trees, shrubs and fins without creating backwater, but does not provide protection for the bridge supports in the event of penetration of floating trees, shrubs and fins through the barrier.

The closest in essential features and achieved effect to the proposed utility model is “Bridge Support” (AS USSR No. 1678949, publ. 09/23/1991), which has a device for protection against debris and karches made in the form of attached to the extreme pile from the top side of the fixed guiding flaps and connected to the drive and installed in front of the flaps with the possibility of rotation around its axis of the drum with spurs.

The reason that impedes the obtaining of the technical result indicated below when using the known design is that when using it on mountain rivers, there is no need to use a drive to rotate the drum with spurs. In addition, the high pressure of the mountain river stream significantly complicates the rotation of the drum by means of a drive, and the stationary position of the drum in the period between cleaning will contribute to the formation of stone sediments at the support.

The difference of this utility model is that the proposed utility model uses the natural process of raising the level of mountain rivers during intense melting of glaciers and heavy rains.

The technical result achieved by the implementation of the claimed utility model is to provide protection of bridge piers on mountain rivers from floating trees, branches and shrubs without the formation of stone drifts.

The specified technical result is achieved by the fact that the fixed part of the device is made in the form of a restrictive ring installed above the low water level, and the movable part is made in the form of a rotary ring that rotates relative to the restrictive ring and has horizontal and vertical blades, the number of blades is odd, and the rotary ring and the blades are gummed.

In FIG. 1 shows a device for protecting bridge supports from floating trees, branches and shrubs (the number of blades is 3); in FIG. 2 is a section along AA, in FIG. 3 - callout I.

A device for protecting bridge supports from floating trees, branches and shrubs consists of a fixed part made in the form of a restrictive ring 1, mounted on a circular support 2 above a low water level, and a movable part made in the form of a rotary ring 3. The swivel can be rotated relative to restrictive ring 1 and has horizontal 4 and vertical blades 5, the number of blades being odd, and the rotary ring 3 and horizontal 4 and vertical 5 blades are gummed.

An odd number of blades will contribute to the rotation of the rotary ring 3, excluding the state of equilibrium. Gumming of a rotary ring and blades allows to increase their wear resistance and durability.

In the period of low-water waters, floating trees, branches and shrubs accumulate on the support of the bridge over the mountain river. When the level of mountain rivers rises during the period of intensive melting of glaciers and heavy rains, the rotary ring 3 with horizontal 4 and vertical 5 blades under the influence of water pressure rotates relative to the restrictive ring 1 and clears the support 2 of trees, branches and shrubs. In this case, stone deposits will not form, since the lower part of the support is free.

As follows from the foregoing, the achievement of a technical result - ensuring the protection of bridge piers on mountain rivers from floating trees, branches and bushes without the formation of stone drifts, is ensured only with strict inextricable and interconnected implementation of all the essential features of the claimed device for protecting bridge piers from floating trees, branches and shrubs.

Claims (3)

1. A device for protecting bridge piers from floating trees, branches and shrubs consisting of a fixed and moving parts, characterized in that the fixed part of the device is made in the form of a restrictive ring mounted on a circular support above the low-water level, and the moving part is made in the form a rotary ring that rotates relative to the restrictive ring and has horizontal and vertical blades. 2. The device according to claim 1, characterized in that the number of blades is odd. 3. The device according to p. 1, characterized in that the rotary ring and the blades are gummed.

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