CN2468897Y

CN2468897Y - Protective ments for sealing of tail axle of ship

Info

Publication number: CN2468897Y
Application number: CN 01203791
Authority: CN
Inventors: 徐振昭
Original assignee: Individual
Current assignee: China Oilfield Services Ltd
Priority date: 2001-02-22
Filing date: 2001-02-22
Publication date: 2002-01-02
Anticipated expiration: 2011-02-22

Abstract

The utility model discloses a seal protector for ship stern shaft, comprising a fixed ring 3 and a movable ring 7. The fixed ring 3 and the movable ring 7 are respectively provided with a plurality of blades 4 and 5 whose three faces are provided with blade edges, one end of the fixed ring 3 is welded outside a stern shaft pipe 2, the other end keeps a certain interval from the stern shaft 8, the movable ring 7 is fixed on the stern shaft 8 via bolts 6, and can rotate with the stern shaft 8. If the ship reaches fishnet, the blades 4 and 5 on the fixed ring 3 and the movable ring 7 can cut the fishnet simultaneously, which can prevent the fishnet from getting into the gap between the stern shaft 8 and the stern shaft pipe 2 to break the seal 9. The utility model has advantages of simple structure and convenient dismounting, which can be used for a long-term.

Description

The marine rear shaft seal protector

The utility model relates to a kind of marine rear shaft seal protector, and it can in time eliminate the fishnet on the tailing axle, prevents the damage of tail stalk seal, thereby has improved the economic benefit of operation of ship.

Along with the mankind constantly develop and the world market expanding economy the ocean, marine various work boats and ships are more and more.Underway boats and ships often are subjected to the puzzlement of fishnet, particularly through the boats and ships of the coastland work of being everlasting, tailing axle is often twined by fishnet, and the lighter causes tail stalk seal to damage, weight person causes Main Engine Cut-Off, can not normally navigate by water, in a single day tail stalk seal damages, and the lubricating oil in the screw shaft pipe leaks into marine, cause the pollution of ocean, the boats and ships repairing that lies up of will suspending immediately, 8～100,000 yuan at least of the expenses that lies up once are at most more than 150,000 yuan.Therefore cause unnecessary waste and spending to the shipowner.The boats and ships of this tail stalk seal protector also are not housed at present.

The purpose of this utility model provides a kind of simple in structure, easy accessibility, and the tail stalk seal protector of tailing axle fishnet is twined in the cutting of energy actv..

For achieving the above object, the utility model marine rear shaft seal protector comprises: fixed ring, rotating ring, decide the outside that boxing is connected on screw shaft pipe, and serrated blade is housed above, blade three faces have blade, so that actv. cutting fishnet.Rotating ring is fixed on the tailing axle by bolt of rear end plate; the blade that three faces put the first edge on a knife or a pair of scissors is housed above; rotating ring rotates along with the rotation of tailing axle; the cutting in time of the rotating ring blade of rotation is wrapped in the fishnet on the tailing axle; do not cause fishnet to enter in the slit of tailing axle and screw shaft pipe with the tailing axle of rotation; damage sealing, realized the effect of protection tail stalk seal.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the cutaway view of the utility model marine rear shaft seal protector when adorning aboard ship;

Fig. 2 is the fixed lateral plan that is contained on the screw shaft pipe that encircles shown in Figure 1;

Lateral plan when Fig. 3 is not contained in tailing axle for rotating ring shown in Figure 1;

As shown in Figure 1, the utility model marine rear shaft seal protector, encircle the outside that an end of 3 is welded on screw shaft pipe 2 surely, encircle surely the blade 4 that several three faces have the sword limit is housed on 3, the other end and tailing axle 8 keep certain clearance.Rotating ring 7 is fixed on the tailing axle 8 by bolt 6, and the blade 5 that several three faces have the sword limit is housed on the rotating ring 7.The rotation of tailing axle 8 drives the rotation of rotating ring 7 during work, when if fishnet is arranged, blade 5 cutting fishnet on the rotating ring 7 that is rotating, if fishnet hangs on the blade 4 of deciding ring 3, under the pulling of rotating ring 7, make fishnet produce certain power, fishnet on the effect bottom knife 4 of power is cut off, and has so just prevented to destroy sealing 9 in the gap that rotates into tailing axle 8 and screw shaft pipe 2 of fishnet by tailing axle 8, makes lubricating oil 1 flow out outboard.

Fig. 2 shows the utility model and encircles 3 lateral plans that are welded on the screw shaft pipe 2 surely;

Lateral plan when Fig. 3 shows the utility model rotating ring 7 and is not contained on the tailing axle 8.

Claims

1, a kind of marine rear shaft seal protector; comprise and decide ring and rotating ring, it is characterized in that: encircle the outside that an end is welded on screw shaft pipe surely, the blade that several three faces have the sword limit is housed above; the other end and tailing axle keep certain clearance, and the rotating ring bolt together is on tailing axle.

2, marine rear shaft seal protector according to claim 1 is characterized in that: the blade that three faces have the sword limit is housed on the rotating ring.