ES2357201A1 - Mechanism for rapidly changing the bearing of a strut - Google Patents

Abstract

Mechanism for rapidly changing the bearing of a strut, which comprises: individual identical thrust half-bushes arranged so as to face one another and which together clasp the tail shaft on one of the sides of the strut and each define half-heads that face one another in the conjunction of said thrust half-bushes a centring bush arranged so as to clasp a new bearing, inserted on the tail shaft on the side opposite the strut individual clamps arranged on the bow side and on the stern side of the strut, clasping, respectively, said half-heads of the thrust half-bushes and the centring bush identical individual threaded studs in one of said clamps and in nuts that rotate freely in the other clamp and means for rotating said nuts in the appropriate direction to generate forward movement of the studs and the consequent approach of the clamps such that the thrust half-bushes axially push the bearing of the strut for extraction thereof.

Description

Mechanism for quick change of the bearing of the buttressing

The present invention relates to a new solution for quick change of the bearing of the buttress.

Defined the buttress as the piece it holds the propeller shaft of ships, an unsolved problem in the Current state of the art is the one concerning the change of the bearing in which it rotates its axis. When the change of said is required bearing (simply, because it breaks down / deteriorates and is necessary replace it) this replacement is very slow and laborious, which forces the technical stop of the ship for a long time (several hours). On the other hand, the removal of the bearing to be replaced is does hitting directly on him, which entails risk of Misalign the buttress.

The object of the invention solves this double problematic, advocating for this purpose a new mechanism or Work tool for quick change of bearing buttressing

An objective of the invention is to solve the bearing replacement with minimal downtime. The replacement of the bearing using the tool object of the invention is carried out in a minimum time (few minutes).

Another object of the invention is to avoid risk of misaligning the flyer, which you must keep in any case A perfect alignment. To do this, the recommended mechanism of According to the invention, it consists of:

a) identical two half-shells pushers that are facing each other, embrace the axis together tail on one side of the buttress and define paths half-heads faced in the conjunction of said half-shells pushers;

b) a centering bushing that is arranged hugging a new bearing, inserted in the tail shaft by the opposite side of the buttress;

c) clamps arranged forward and aft of the buttress embracing, respectively, the aforementioned half-heads of said pusher half-shells and the centering sleeve;

d) identical identical threaded studs in a of the aforementioned clamps and on nuts that rotate freely in the other clamp;

e) means for rotating said nuts in the appropriate sense to cause the asparagus to advance and consequent approximation of the clamps so that Semi-push pushers axially push the bearing of the buttress for extraction.

To better understand the purpose of this invention, a preferred form of practical realization, susceptible to accessory changes that do not distort its foundation.

Figure 1 represents an overview Schematic elevation of the mechanism object of the invention mounted on the axis (e) of the arbotante and with all its basic components in operational provision

Figure 2 represents an overview schematic perspective of the mechanism object of the invention, with all its basic components in assembly arrangement.

Figure 3 represents an overview schematic similar to figure 2, with all its basic components mounted together.

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An example of practical, non-limiting embodiment of the present invention.

The object of the invention relates to a mechanism which constitutes a new solution for quick bearing replacement of the buttress.

In accordance with the invention, and according to the embodiment represented, said mechanism basically consists of the following components and particularities:

eleven'.-

pusher half-shells

2.-

centering bushing

3, 3 '.-

clamps

4, 4 '.-

threaded studs

5, 5 '.-

nuts

6.-

auxiliary clamp

and.-

tail shaft

The half-shells (1), (1 ') are arranged jointly hugging the tail axis (e) held by the buttress that, in turn, holds the propeller of the ship. Every half cap (1), (1 ') defines a half head (11), (11'). The conjunction of the half-shells (1), (1 ') implies the conjunction of the half-heads (11), (11 ') to determine a centering head. Additionally, a clamp is used - or can be used - auxiliary (6), to hold the half-shells (1), (1 ') before arrange the corresponding clamp (3), or (3 ') hugging its half-heads (11), (11 ').

The centering bushing (2) is of configuration open and operatively arranged hugging the new bearing (N) -which performs the same function as half-shells (1), (1 ') but on the opposite side of the buttress where they are arranged in the tail axis (e) -.

The clamps (3), (3 ') involve two seats (31), (31 ') to accommodate tightly in them to, respectively, the half-heads (11), (11 ') of the half-shells (1), (1 ') and centering bushing (2). One of these clamps (3) it involves two threaded holes (32) to thread in them one of the ends of said threaded studs (4), (4 ') and the another involves two through holes (33) in which they are arranged said nuts (5), (5 ').

With these elements, structure, layout and particularities the operability of the mechanism takes place:

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arranging the half-shells (1), (1 ') facing each other, hugging the tail axis together (e) on one side of the buttress, and holding them in this position by auxiliary clamp (6);

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arranging the new bearing (N) in the opposite side, and inserting in it the centering bushing (2);

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arranging the clamps (3), (3 ') one (3) hugging the half-heads (11), (11 ') of the half-shells (1), (1 ') and the other (3') hugging the centering bushing (2);

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inserting threaded studs (4), (4 ') in the threaded holes (32) one of the clamps (3) and arranging the nuts (5), (5 '), previously inserted by threaded into said studs (4), (4 '), through holes (33) of the other clamp (3 ');

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by rotating said nuts (5), (5 ') in the proper direction so that the clamps (3), (3 ') tend to approach, with the consequent axial thrust of the half-shells (1), (1 ') on the bearing to be replaced.

Claims (3)

1. Mechanism for the rapid change of the bearing of the buttress, characterized in that it consists of: a) identical two half-shells pushers (1), (1 ') who face each other, hug together with the tail axis (e) on one side of the buttress and define half-headed paths (11), (11 ') faced in the conjunction of said pusher half-shells (1), (1 '); b) a centering bushing (2) that is arranged hugging a new bearing (N), inserted in the tail shaft (e) on the opposite side of the buttress; c) clamps (3), (3 ') arranged to bow and stern of the buttress hugging, respectively, at said half-heads (11), (11 ') of said pusher half-shells (1), (1 ') and centering bushing (2); d) two identical studs (4), (4 ') threaded in one of the aforementioned clamps (3) and in some nuts (5), (5 ') that rotate freely in the other clamp (3'); e) means for rotating said nuts (5), (5 ') in the proper direction to cause the advance of the studs (4), (4 ') and consequent approach of the clamps (3), (3 ') for the pusher half-shells (1), (1') to push axially to the bearing of the buttress for its extraction.

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2. Mechanism for the rapid change of the bearing of the bush, according to claim 1, characterized in that the centering bushing (2) is open configuration. 3. Mechanism for the rapid change of the bearing of the buttress, according to claim 1, characterized in that the clamps (3), (3 ') are open configuration and have separate seats (31), (31') to, respectively, accommodate tightly to the semi-heads (11), (11 ') and the bushing (2).