RU2241095C1 - Device for ice jam prevention - Google Patents

Abstract

FIELD: ice-breaking equipment for ice jam prevention in front of bridge during river freeze-up and in ice-drift periods.

SUBSTANCE: device is made as rotary drums with spikes. Drums are installed on bridge piers upstream bridge and located above water level. Drums are installed at a level enough for ice cutting by drum spikes. Arranged under drums are platforms having upper inclined surfaces pressing ice to drum spikes for ice shearing. Device also has ice separation wedges for moving ice pieces apart downstream drums.

EFFECT: increased ice-cutting efficiency.

2 dwg

Description

The invention relates to ice technology, in particular to ice-breaking devices mounted on bridge piers across the river and designed to prevent congestion in front of bridges during periods of ice freezing and ice drift in the autumn and spring.

A device is known (see [1] VV Bogorodsky, V. P. Gavrilo, O. A. Nedoshivin. Destruction of ice. Methods, technical means. L .: Gidrometeoizdat, 1983, p. 48. US patent No. 3913511), representing a platform mounted on sealed drums with spikes, providing the device buoyancy and rotated by electric motors. In the bow mounted disk cutters with drives. Ice is cut by milling cutters into strips that are broken by the front drum. The debris is captured by an inclined conveyor and fed to the transverse conveyors, which then dump them on both sides of the channel into an ice field.

The disadvantages of the device are its complexity and the need to use drives.

The essence of the invention is to simplify the design of the device and to ensure its ice-breaking ability due to the use of energy of ice movements.

The technical result obtained by the implementation of the invention is to increase the efficiency of ice destruction due to the absence of energy consumption during its operation.

The essential features characterizing the invention.

Restrictive: a device to prevent congestion, which is a rotating drum with spikes.

Distinctive: the drums are installed on the bridge supports upstream of the river at a level above the water level, but with sufficient spikes to destroy ice, while platforms are installed under the drums, the upper inclined surfaces of which are able to press the ice advancing on the bridge supports to the drum spikes, which allows breaking the ice by cleaving it, and to push apart the debris of ice behind the drums, ice-breaking wedges are installed on the bridge supports.

Figure 1 shows the proposed device, a cross section; figure 2 is a view aa in figure 1; figure 3 is a view of BB in figure 1.

On the supports 1 of the bridge 2 upstream of the river 3 at a level above the water level 4, with the help of the brackets 5 and the shaft 6, drums 7 with spikes 8 are installed, while the installation level of the drums 7 should ensure that the spikes 8 are in contact with the ice cover 9, sufficient for destruction ice 9 by chipping it. Under the drums 7, on the supports 1, platforms 10 are installed, the upper inclined surfaces 11 of which are capable of pressing ice 9 that is moving on the supports 1 of the bridge 2, i.e. they serve as supports and do not allow the ice field 9 to bend when it is destroyed by spalling, which facilitates the destruction process (see [1]). To push apart the debris of ice 10, drums 7 are mounted on the supports 1 on the supports 1. When the water level 4 or the thickness of the ice 9 changes, the drums 7 and the platform 10 are moved in the desired direction using fasteners 13 that allow two degrees of freedom.

When ice 9 is navigated on the supports 1, due to the flow of the river at a speed V, the ice cover will begin to move along the surface 11, at the same time abut against the spikes 8 and rotate the drums 7. When the drums 7 rotate, the sharp ends of the spikes 8 will cause high stresses to appear in the ice 9, which will lead to the destruction of the ice cover by breaking ice. The resulting fragments of ice 10 with the help of wedges 12 will move beyond the width of the supports 1, which will facilitate the process of moving ice 9.

With the width of the drums B exceeding the width of the bridge supports in, the formed channels filled with broken ice 10 will lead to unhindered passage of ice between the bridge supports, which eliminates the possibility of jamming in front of the bridge.

Claims (1)

A device for preventing congestion, which consists of rotating drums with spikes, characterized in that the drums are mounted on bridge piers upstream of the river at a level above the water level, but sufficient to break the ice with spikes, while platforms are installed under the drums, the upper inclined surfaces of which are capable of to press the ice approaching the bridge supports to the drum spikes to break the ice by cleaving it, and to spread the ice fragments behind the drums, ice-distributing cells are installed on the bridge support ina.

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