SU361921A1 - FULLY - Google Patents

Description

The invention relates to the field of shipbuilding, in particular to hatch covers.

Ship's hatch covers are known, consisting of double-sided covers hinged to each other and receiving movement from a power hydraulic drive through a lever system with pairs of levers, the opposite ends of which are connected to the leading cover and the tubular of the vessel.

The purpose of the invention is to reduce the area required to fold the caps and increase the efficiency of the hydraulic drive.

For this, in the proposed vessel closure, the ends of converging pairs of levers are fixed on traverses hingedly connected to the deck of the vessel and the lid.

FIG. 1 shows the proposed hatch cover, side view; in fig. 2 is a view along arrow L of FIG. 1 | in fig. 3 is a view along arrow B in FIG. 2; in fig. 4 is a view along arrow B in FIG. 2; pas figs. 5 is the same, in plan view.

The shipboard hatch closure consists of two sections / and 2 hingedly articulated between themselves, one of which 2 is hinged to the deck foundations 4 by means of a foam plate 3, while the other / in the process of opening and closing the hatch moves along the coaming guide 5. There is also device (lever or cable type), providing folding sections for

coamings, or their initial disclosure when closing.

The hatch cover drive is

a hydraulic cylinder 6, horizontally located along the coaming of the hatch behind the paluon;

loop or under it.j

The hydraulic cylinder lugs are pivotally connected to the upper 7 and lower 8 levers (or pairs of levers), which in turn are also pivotally connected to the upper 9 and lower 10 crossheads.

Traverses 9 and 10 by means of bearing assemblies formed by the housings // and 12 u lids 13 are hinged on the deck of the vessel, as well as on the loop 3 and the special bracket of section 2.

When the supply of working fluid in the cavity of the hydraulic cylinder rod and the cylinder body,

moving one relative to another

opposite directions, impact

are placed on the levers 7 and 5, which converge in this case, reducing the angle between them and turning the end section 2 by means of the crosspiece

around the deck hinge, thereby opening the hatch I

The process of closing the hatch is the reverse of the opening, i.e., the rod and the body of the hydraulic cylinder, moving towards each other, act on the levers 7 and 5, which pacxo-j dts, increasing the angle between themselves and along-1

by means of the traverse, the end section i2 is turned around the deck hinge.

The lever drive system is designed in such a way that the top 7 and bottom 8 levers at the opening time of the opening are at an angle slightly less than or equal to 180 °.

Subject invention

A shipboard hatch closure containing double covers hingedly connected

between themselves and receiving movement from a power hydraulic drive through a lever system with pairs of levers, the opposite ends of which are connected to the driving cover and

and the deck of the ship, characterized in that, in order to reduce the area required for folding the covers and to increase the efficiency of the hydraulic drive, the ends of the converging pairs of levers are fixed on the cross-arms, pivotally

associated with the deck of the vessel and the lid.

Type A