SU1682233A1 - Shipboard rig for at-sea transfer of cargoes and people - Google Patents

Abstract

The invention relates to shipbuilding, in particular to ship devices for transferring cargo and transferring people to the sea. The purpose of the invention is to improve ease of operation. The ship device for transferring cargo and transferring people to the sea contains a cabin with a double-drum winch, on which the auxiliary cable 5 and the guide cable 6 are fixed at one end, as well as the tracking device, made with blocks 7,

Description

The invention relates to shipbuilding, in particular to ship devices for transferring cargo and transferring people to the sea.

The purpose of the invention is to improve ease of operation.

Fig, 1 shows a diagram of the device; FIG. 2 shows the node I in FIG. one.

The device contains a cargo cabin 1, in which a two-drum winch 2 is located. An auxiliary 5 and guide ropes stored on the moving blocks 7 of the tracking device are mounted on the drums 3 and 4 of the winch 2. The lower end of the guide rope is fixed on the receiving vessel 8, and the upper end of the auxiliary rope is connected to the cargo cable 9 of the ship's loading device. Winch 2 is provided with an uncoupler (not shown) that allows the drums 3 and 4 to rotate both together and separately. The next device consists of two coaxial cylinders 10 and 11 fixed to the cab and connected to a hollow burglary 12. The inner surface of the cylinders and the outer surface at the ends of the hollow shaft are screw cut, and the middle part of the shaft is connected to the drive 13. In the cylinders there are helical springs 14 and 15, through which rods 16 and 17 pass, provided on one side with stops 18 and 19, respectively, and on the other containing movable blocks 7, the springs at one end abut against stops 19, and the other end against cylinder covers 20. The caps have holes for the smooth movement of the rods. At the ends of the hollow shaft 12, stop rollers 21 are fastened, which are located between adjacent coils of springs. The screw pitch of the cylinder and the hollow shaft is equal to the step of winding the spring. The cylinders 10 and 11 are arranged in such a way that the shaft 12, resting at one end against the cover 20 of one cylinder, interacts with one of the stop rollers 21 at its second end with the stop 19 of the rod 17 of the opposite cylinder. The drive 13 of the rotation of the hollow shaft and the winch 2 is powered from the ship network via a portable cable 22.

The device works as follows.

Cabin 1, located on the transfer vessel, is loading, auxiliary rope

5 is connected to the cargo line 9, a hollow w /. 12 is set in a position in which its lower part abuts against the cylinder cover 20. With the help of the ship’s cargo device, the cabin is taken out

the board is oriented over the deck of the receiving ship. By turning on the drum 4, the guide rope is etched and fixed on the receiving vessel, after which the drum 4 is turned on until the rod 17, compressing the spring 15, takes a position in which its oscillations, caused by the heaving of the vessels, will occur around average working strain

springs. By switching on the drums 3 and 4, the cab is lowered to such a distance from the load device that it excludes their contents after switching to tracking mode.

To introduce the cabin 1 into the tracking mode of the movement of the receiving vessel, a drive 13 of rotation of the hollow shaft is turned on, which is unscrewed from the cylinder 11 and simultaneously screwed into the cylinder 10,

at the same time, the thrust rollers 21 roll around in the turns of the springs, excluding from the work the turns of the spring T5 and putting into operation the same number of turns of the spring 14. The total number of working turns of the two springs in

any moment of time remains constant, at the same time the stiffness of the spring 15 increases, and the stiffness of the spring 14 decreases. This causes a gradual increase in the cabin oscillation amplitude.

synchronously with the oscillations of the receiving vessel. The tracking mode ends when the upper part of the hollow shaft rests on the cylinder head cover 10, all the coils of the spring 14 are brought into operation and the springs 15 are removed from work.

The drive 13 of rotation of the hollow shaft stops and the winch 2 is turned on to lower the cabin, which now completely repeats the oscillations of the receiving vessel.

which provides an unstressed fit. Cab lift is carried out in reverse order.

Claims (1)

The smoothness of entry into the cabin tracking is determined by the rotational speed of the hollow shaft and does not depend on the time of entry and the mutual speeds of vessels. The necessary tensions of the guide and auxiliary ropes are provided with a certain initial stiffness and preload of the springs. Claims Ship device for transferring cargo and transferring people to the sea, containing a cabin with a double-drum winch, with two bypass blocks mounted on rods located in coaxial cylinders, as well as auxiliary and guide ropes, each stocked in a corresponding bypass block and it is fixed at one end to the corresponding drum of the said winch, which is so that, in order to increase the ease of operation, it is equipped with two helical springs, kinematically connected with corresponding rods and coaxially spaced them, hollow a threaded shaft on the outer surface of its end portions and stop rollers mounted in the cavity of this shaft at its ends, as well as a rotational drive of the hollow shaft, wherein a thread is made inside said cylinders, interacting with the thread of the hollow shaft, and the thrust rollers are located between two adjacent turns of each of the springs.