SU362738A1 - METHOD FOR REPLACEMENT OF NON-REMOVABLE SEAL DRAWBOARDS - Google Patents

Description

one

This invention relates to shipbuilding.

Methods are known for replacing the one-piece sealing cuffs of a stern gland of a vessel with the application of standard cuffs located in the body of a stern gland.

A feature of the described method is that a detachable casing with spare cuffs is installed on the ledge of the propeller shaft, removed from the casing body to the ledge of the propeller shaft, the casing is removed, and the casing shaft is mounted from the stuffing box housing to the ledge of the propeller shaft and cutting off the worn cuffs, and through an annular gap formed by the inner surface of the sleeve and the outer surface of the ledge of the propeller shaft, one of the replacement cuffs on the ridge projection is inclined to the lateral surface of the propeller shaft wow shaft. Then, the ring of the stern gland is removed from the gland sleeve to the protrusion shaft protrusion, the following spare cuff is inserted, the gland bushing is fed to the projection of the propeller shaft, spare cuffs with metal parts are mounted on it and assembled into the body of the stern gland.

This ensures the acceleration of the process of replacing the full-sized gland cuffs with spare cups without disassembling the shaft line and putting the ship to the dock.

In order to eliminate the coincidence of the working edges of the spare cuffs with the developed surface of the sleeve, the latter is installed in the packing case with an offset

along the axis of the propeller shaft relative to the position that the sleeve took before replacing the cuffs.

FIG. 1 shows the spare cuffs in a stationary detachable casing on the ledge of the propeller shaft, and the standard cuffs in the stern shaft housing; in fig. 2 and 3 - regular cuffs in the process of replacing worn out and packing gland, installed in its body.

On the ledge 1 of the propeller shaft 2, a detachable cover 3 is installed with spare cuffs 4 of the required quantity. The casing covers the shaft and is fixed to the base 5. When replacing the standard (worn) cuffs 6 with spare 4, remove the detachable

a casing 5 and a yoke 7 securing the gland sleeve 8. Install the spare cuff 4 obliquely (see Fig. 2) and remove the gland sleeve 8 with parts W and 11 from the propeller shaft 2 from the gland housing 9

the worn cuffs 6 are cut and removed, and the spare cuff 4 is pressed against the side surface of the shaft. Through the annular gap 12 formed between the lower part of the propeller shaft 2 and the inner surface 13

The stuffing sleeve 8 conducts a spare cuff 4 on the projection 14 of the propeller shaft. After that, the part 10 and the next spare cuff 4, which is mounted on the protrusion 14 in the same manner as the previous cuff 4, are led to the protrusion 14.

Then, the stuffing sleeve 8 with the part // (see FIG. 3) is guided to the protrusion 14, the part 4 and the part 10 are cuffed onto it, and then the stuffing sleeve is installed in the stuffing box 9. The stuffing sleeve is installed in the body offset along the axis so that the developed surface on the sleeve does not coincide with the working surface of the newly installed replacement cuffs. After installation of the stuffing sleeve, its position along the shaft axis is fixed with a yoke 7. The casing 3 with the remaining spare cuffs 4 is again mounted on the foundation 5.

Subject invention

1. A method of replacing the one-piece sealing cuffs of a stern gland of the vessel using fine cuffs located in the body of the stern gland enclosing the propeller shaft, characterized in that, in order to accelerate the replacement process without R) 6

Borki line shaft and without putting the ship in the dock, on the ledge of the propeller shaft install a detachable casing with spare cuffs, remove them from the casing of the casing and the ledge of the propeller shaft, dismantle the casing, remove to the ledge of the propeller shaft from the stuffing box housing gland sleeve and cut worn cuffs , and through the annular gap formed by the inner surface of the sleeve and the outer

the surface of the propeller shaft obliquely to the side surface of the propeller shaft conducts one of the spare cuffs onto the projection of the propeller shaft, then the stern shaft ring is pulled out of the gland sleeve onto the protrusion shaft protrusion, the next spare cuff is guided, the stuffing box is brought to the projection of the propeller shaft They install spare cuffs with metal parts on it and, when assembled, are installed in the body of the stern shaft.

2. The method of claim 1, characterized in that, in order to prevent the working edges of the spare cuffs from coinciding with the developed surface of the sleeve, the latter is installed in

The gland housing is displaced along the axis of the propeller shaft relative to the position that the sleeve took before replacing the cuffs.

 1i at 7 1t 10 a 8

I /

dyMJ - J

Ipl-til

I il I