METHOD OP INSTALLING/SECURING AT LEAST ONE DIVERTING PULLEY OF
AN ELEVATOR AND THE ELEVATOR
The present invention relates to a method for
installing/securing at least one diverting pulley of an
elevator and to an elevator produced by the method.
At present, a problem in the installation of elevators is
tightness of space, because the aim is to make as efficient use
of the cross-sectional area of the shaft as possible.
Especially in the case of elevators without counterweight, this
leads to a very small distance between the car wall and the
shaft wall. Moreover, minimizing the shaft spaces both above
and below the elevator car leads to problems regarding both
installation and construction of the elevator.
In prior-art solutions, for example the diverting pulleys are
fixedly mounted e.g. on the car, the counterweight or the frame
structure or equivalent. In such solutions, the diverting
pulleys have to be removed in connection with both installation
of the elevator and maintenance work to be carried out on it.
However, there are considerable drawbacks associated with prior
art. In an elevator constructed as described above, both the
spaces needed during installation and the spaces needed during
maintenance are narrow. In addition, simultaneous removal of
the diverting pulleys is about impossible when prior-art
devices are used. This leads to difficulties and delays in the
installation and maintenance of the elevator.
The object of the present invention is to overcome these
drawbacks and achieve a completely new type of
solution. The object of the present invention is to
enable easy installation of diverting pulleys, sets of
diverting pulleys and/or rope pulleys and thus also to
allow the use of this solution during maintenance.
The invention is based on a concept according to which
the method of installing and/or mounting at least one
diverting pulley comprises at least one rope pulley.
According to such a method, the diverting pulley to-
gether with the ropes is placed near the elevator in
the elevator shaft, whereupon the diverting pulley is
attached by a quick coupling to a fastening point. Al-
ternatively, the rigged diverting pulley can be placed
near the elevator or in the elevator shaft, whereupon
the diverting pulley is attached by a quick coupling
to a fastening point.
According to the above-described method, the diverting
pulley is detached by releasing the quick coupling.
When necessary, the elevator car is suspended for
maintenance preferably so that it is supported by a
tackle or equivalent. Alternatively, the car can be
locked in place by other means.
By the method of the invention, an elevator can be in-
stalled in a reliable, fast and economical manner.
Furthermore, in addition to new buildings, the method
of the invention can also be used in modernization
projects, and the method is not restricted to any spe-
cific elevator type; instead, the method can be used
both in elevators without counterweight and in eleva-
tors with counterweight. In addition, the method can
be utilized in other hoisting arrangements according
to need.
The invention also relates to an installation arrange-
ment according to the preamble of the claim in an ele-
vator comprising at least one diverting pulley mounted
in place by means of a frame structure and a roping
consisting of a number of ropes, the passage of which
has been arranged using at least one set of diverting
pulleys. Such an arrangement comprises at least one
set of diverting pulleys, which has been arranged to
be detachably mounted by means of a quick coupling.
The mounting used may be the frame structure, the car,
the counterweight, the elevator shaft or equivalent
according to need. A releasable set of diverting pul-
leys is a very advantageous solution because the space
available for the pulleys is very small. Therefore, it
is very advantageous to have a possibility to move the
set of diverting pulleys to a place where there is
more space, where it can be released and fastened
safely and quickly. It is possible to provide such a
space e.g. above the car.
The set of diverting pulleys according to the arrange-
ment consists of at least one diverting pulley and a
frame structure or box part and preferably the frame
structure or box part consists of at least one box
part or part. The box part has preferably been ar-
ranged to be detachably secured to at least one di-
verting pulley. If the box part is composed of more
than one part, these can also be advantageously fas-
tened together.
The set of diverting pulleys according to the arrange-
ment preferably comprises an even number of diverting
pulleys. In a particularly preferable case, the number
of diverting pulleys is two. In such a case, the oppo-
site forces acting on the diverting pulleys advanta-
geously about cancel each other. What remains is pref-
erably only the difference between the opposite
forces. Due to its structure, the set of diverting
pulleys according to this solution can withstand even
large moment forces, such as e.g. the forces caused by
the upper and lower riggings, because in practice these
almost cancel each other due to the advantageous
diverting pulley structure.
Arranged in the frame structure or box part of the set of
diverting pulleys of the invention are a mounting element
that can be detachably fastened to its counterpart and at
least one diverting pulley mounted on the frame structure
by means of a quick coupling. The quick coupling in
question may be e.g. a so-called key-hole joint lockable
by a spring. The spring prevents the frame structure from
escaping from the part of the keyhole part of a
preferably narrow shape.
It is also possible to attach a detachable guard element
to the set of diverting pulleys of the invention to guide
the ropes. Alternatively, the guard element also keeps
the ropes in position. In addition, the guard element,
which is made of any material, preferably e.g. plastic,
prevents the entry of rubbish or the like into the set of
diverting pulleys, especially into the gap part between
the box parts.
The invention also concerns the use of a quick coupling
in an elevator, comprising at least one rope pulley
mounted in place by means of at least one frame structure
and a set of ropes consisting of a number of ropes, the
passage of which has been arranged using at least one set
of diverting pulleys.
Accordingly, the invention provides a method for
installing/securing at least one diverting pulley of an
elevator having at least one rope pulley, characterized
in that the diverting pulley together with the ropes or
in a rigged state is arranged near the elevator or in the
elevator shaft,the diverting pulley is placed on a
mounting point by using a quick coupling.
The invention also provides an elevator, comprising at
least one rope pulley mounted in place by means of a
frame structure and a set of ropes consisting of a number
of ropes, the passage of which has been arranged using at
least one set of diverting pulleys, characterized in that
the set of diverting pulleys has been arranged to be
detachably mounted by means of a quick coupling.
In the following, the invention will be described in
detail with reference to the accompanying drawings, which
illustrate an installation and/or mounting method and
an elevator according to the invention.
The invention will now be examined in greater detail
with reference to the attached drawings, wherein
Fig. 1 presents a solution according to the invention
in situation where the elevator is being installed or
operated
Fig. 2 represents a solution according to the inven-
tion for use during maintenance of an elevator,
Fig. 3 illustrates the structure of set of diverting
pulleys in a dismounting situation,
Fig. 4 illustrates the structure of the set of divert-
ing pulleys in a dismounting situation as seen from
another direction
Fig. 5a presents the structure of the set of diverting
pulleys in a so-called exploded view,
Fig. 5b presents a control signal view of the set of
diverting pulleys, and
Fig. 6 present the structure of the set of diverting
pulleys in a so-called exploded view.
Fig. 1 presents an elevator car 1 with a frame struc-
ture 3 in an elevator shaft 2. The figure also shows a
hoisting machine 4, rope pulleys 5 and sets of divert-
ing pulleys 6. The ropes themselves are not shown to
simplify the figure. In this example, the sets of di-
verting pulleys 6 are mounted on the frame structure
3. Alternatively, the sets of diverting pulleys 6 may
naturally be mounted on the guide rail.
In Fig. 2, the elevator car 1 with a frame structure 3
is presented in a maintenance situation where a set of
diverting pulleys 6a has been driven along the ropes 7
to a maintenance position, allowing a serviceman to
carry out the maintenance operations safely while
standing on the top 8 of the elevator car 1. A corre-
sponding situation can naturally be utilized when the
elevator is being installed. The elevator car may
preferably be narrower in its upper part, allowing
other devices in the shaft, such as e.g. the hoisting
machine, which are not shown in the figure, to be more
easily disposed in relation to the elevator car.
Fig. 3 shows the sets of diverting pulleys 6 and the
frame structure 3. In the figure, set of diverting
pulleys 6a has been detached from the frame structure.
The figure also shows the box part 8 of the set of di-
verting pulleys 6. The box part in the figure consists
of more than one part 8a and 8b. In addition, the fig-
ure also shows a hole 9, which preferably is narrower
at one edge. The figure shows two holes 9, with a
tightening element 10, preferably a spring, mounted in
one of them. A so-called keyhole joint as presented in
the figure enables easy quick coupling of the set of
diverting pulleys even without separate tools. The
counterparts on the set of diverting pulleys, which
are presented in detail in Fig. 4, are placed in the
holes 9 and the spring 10 tightens the set of divert-
ing pulleys in position. Thus, no separate fastening
elements such as bolts are needed at all and the in-
stallation can be performed considerably faster.
4 shows the set of diverting pulleys 6 as seen from
another direction. The mounting hole 9 and the spring
10 can now be seen from the other side and in addition
the figure shows a counterpiece 8c, which is provided
on the set of diverting pulleys and is placed in the
hole 9 in the quick coupling. In this embodiment, the
counterpiece 8c is preferably an integral part of the
box part 8, but naturally it may also be a separate
fastening element attached the box part 8. Between the
box parts 8a and 8b is formed a so-called gap 15,
which in undesirable conditions may permit the entry
of rubbish into the box, which might impede the opera-
tion of the set of diverting pulleys.
Fig. 5a illustrates the assembly of the set of divert-
ing pulleys 6, wherein the box part 8 is composed of
several different parts. Box part 8a is provided with
a counterpart 8c integrated with it, and the separate
box part 8b is provided with a guard element 8d inte-
grated with it, which naturally may also consist of a
separate and detachable guard element 8d. The guard
element 8d functions as a gap protector and it both
prevents the entry of impurities into the set of di-
verting pulleys 6 and guides the ropes, which are not
shown in the figure. The diverting pulley 11 is
mounted on an axle 12 by means of another axle 13,
preferably a sleeve and preferably a retainer screw
14. In this way, a compact set of diverting pulleys 6
is achieved that is easy and economical to both manu-
facture and install.
Fig. 5b presents a sectional view of a set of divert-
ing pulleys 6 in which, in addition to the pulleys 11,
are also shown the upper ropes 7a, which pass around
pulley 11a, and the lower ropes 7b, which pass around
pulley 11b. As can be seen from the figure, the set
preferably comprises an even number of diverting pul-
leys, here two pulleys, so the forces produced by the
upper and lower ropes advantageously cancel each other
and only their difference preferably remains on the
set of diverting pulleys.
Fig. 6 presents an assembly view of the rope pulley 5,
wherein the box part 8 has preferably been made from a
profiled element. In addition, the figure shows both
the pulley 11 and the axle 12, axle 13 preferably a
sleeve and retainer screw 14 needed for the mounting
of the pulley. If necessary, it is also possible to
add a required number of spacers 15 to the structure.
The method and arrangement of the invention are char-
acterized by what is disclosed in the characterization
parts of claims 1, 5 and 12. Other embodiments of the
invention are characterized by what is disclosed in
the other claims. Inventive embodiments are also pre-
sented in the description part of the present applica-
tion. The inventive content disclosed in the applica-
tion can also be defined in other ways than is done in
the claims below. The inventive content may also con-
sist of several separate inventions, especially if the
invention is considered in the light of expressed or
implicit sub-tasks or in respect of advantages or sets
of advantages achieved. Some of the attributes con-
tained in the claims below may be superfluous from the
point of view of separate inventive concepts.
It is obvious to the person skilled in the art that
the invention is not limited to the embodiments de-
scribed above, in which the invention has been de-
scribed by way of example, but that different embodi-
ments of the invention are possible within the scope
of the inventive concept defined in the claims pre-
sented below.
WE CLAIM:
1. A method for installing/securing at least one
diverting pulley of an elevator having at least one
rope pulley, characterized in that
the diverting pulley together with the ropes or in a
rigged state is arranged near the elevator or in the
elevator shaft,
the diverting pulley is placed on a mounting point by
using a quick coupling.
2. A method as claimed in claim 1, wherein detachment of
the diverting pulley is performed by releasing the
quick coupling.
3. A method as claimed in claim 1 or 2, wherein the car
of the elevator is suspended for maintenance so that
it is supported preferably by a tackle or equivalent
or alternatively the car is locked in place by other
means.
4. An elevator installed by a method as claimed in any
one of the preceding claims.
5. An elevator, comprising at least one rope pulley (5)
mounted in place by means of a frame structure (3) and
a set of ropes (7, 7a, 7b) consisting of a number of
ropes, the passage of which has been arranged using at
least one set of diverting pulleys (6), characterized
in that the set of diverting pulleys (6) has been
arranged to be detachably mounted by means of a quick
coupling.
6. An elevator as claimed in claim 5, wherein the set of
diverting pulleys (6) consists of at least one
diverting pulley (11, 11a, 11b) and a frame structure
(8) .
7. An elevator as claimed in claim 5 or 6, wherein the
number of diverting pulleys (11, 11a, 11b) is an even
number, preferably two.
8. An elevator as claimed in any one of claims 5-7,
wherein the opposite forces acting on the diverting
pulleys (11, 11a, 11b) have preferably been arranged
to about cancel each other.
9. An elevator as claimed in any one of claims 5-8,
wherein the frame structure (8) consists of at least
one box part (8,8a,8b,8c,8d), which have been arranged
to be detachably secured to at least one diverting
pulley (11,11a,11b) and/or to each other.
10. An elevator as claimed in claim 9, wherein it
comprises a fastening element (9,10,12,13,14,15) that
has been arranged on the frame structure (3,8) and can
be detachably secured to its counterpart (8,8c) and at
least one diverting pulley (6,8,11,11a,11b) fastened
to the frame structure (3,8) by means of a quick
coupling.
11. An elevator as claimed in any one of claims 5-10,
wherein it comprises a detachable guard element (8d)
secured to the frame structure (8) to guide the ropes
(7,7a,7b) and/or to keep them in position and/or
advantageously to prevent rubbish or the like from
entering into the set of diverting pulleys.

The invention relates to a method for installing/securing at least one diverting pulley of an elevator or equivalent comprising at least one rope pulley. According to the method, the diverting pulley together with the ropes or in a rigged state is arranged near the elevator or in the elevator shaft and the diverting pulley is placed on a mounting point by using a quick coupling. The invention also relates to an elevator or equivalent comprising at least one rope pulley mounted in place by means of a frame structure (3) and a set of ropes consisting of a number of ropes, the passage of which has been arranged using at least one set of diverting pulleys (6) in such manner that the set of diverting pulleys (6) has been arranged to be detachably mounted by means of a quick coupling. In addition, the invention relates to the use of a quick coupling for placing a set of diverting pulleys (6) on a fastening point in an elevator or equivalent.