SU1230921A1 - Ice breaker - Google Patents

Description

112

This invention relates to shipbuilding, in particular to river icebreakers.

The purpose of the invention is to improve performance.

FIG. 1 shows an icebreaker schematically, section A-A in FIG. 2; in fig. 2 shows a section BB in FIG. one.

The icebreaker contains a roller 1, which is divided into three compartments filled with metal shot 2. The roller 1 is pivotally attached to the bow end of the hull via supports 3 and placed above the center of the spherical concave surface of the platform 5, two pillars 6 pivotally attached to the nose bow. Platform 5 is divided into sealed side compartments 7 with Kingston and central

compartment 8, having in the upper spherical surface 4 of the hole 9 and provided with a suction device, including the rint 10 and the actuator 11.

The icebreaker works as follows. Platform 5 is submerged and turned under ice, after which the suction device starts to pump water from compartment 8. Through holes 9 of a kind, it is pumped out from the space between the lower surface of the ice and the spherical surface 4 of platform 5, where a water-free cavity is created. Then, ice 1 is lowered onto the ice, which, when the icebreaker is moving, rolls over the ice, breaking it like a plate, freely supported on the edge of a spherical concave surface 4.

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Editor V.Kovtun

Compiled by A. Mamaev

Tehred L.Oleynik Proofreader V.But ha

Order 2486/23 Circulation 422Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and Printing Enterprise, Uzhgorod, Projecto st., 4

Claims (1)

An ICE-BREAKER comprising a body with a nasal tip to which an ice-breaking device is attached, including a working element mounted above the active waterline and pivotally mounted on levers below the waterline, characterized in that, in order to improve operational characteristics, the working body is made in in the form of a roller mounted on levers mounted on the nose of the body with the possibility of rotation relative to the horizontal axis, and the floating element is made in the form of a platform with a central a coma and a spherical concave upper wall, which is made with perforation above this compartment, and the latter has a stern opening communicating its cavity with outboard water, and is equipped with a device for sucking water out of it through said stern opening, and the roller is located above the central part of the spherical concave upper wall. <rig.1 GO SO about ς © to