Title of Invention

SUSPENSION ARRANGEMENT FOR AN ELEVATOR AND ELEVATOR HOISTING MACHINE

Abstract The invention relates to a suspension arrangement for an elevator, which elevator preferably is an elevator without machine room and in which elevator the hoisting machine (4) is connected via a traction sheave (5) to hoisting ropes (3), by means of which the elevator car (1) is moved, and which hoisting machine (4) comprises at least a stator frame (26) secured to a mounting place in the elevator shaft and a traction sheave (5) and a rotor frame (25) forming a fixed assembly, which assembly is mounted with bearings so as to be rotatable with respect to the stator frame, and which hoisting machine (4) is secured to a stiffener (22) bracing the stator frame (26). The stiffener (22) comprises a support for mounting a bearing (23), said support being preferably situated below the traction sheave (5) and extending in a direction towards the hoisting machine, on which support is mounted with a bearing a freely rotating auxiliary diverting pulley (7).
Full Text The present invention relates to an elevator suspension arrangement and to an elevator hoisting
machine.
The present invention concerns in the ftrst place an elevator without machine room and
provided with a substantially flat discoid hoisting machine, in which elevator the hoisting ma-
chine is mounted e.g. on one or more guide rails in the elevator shaft. The invention relates in
particular to so-called Double Wrap suspension, which is used e.g. in traction sheave machines
provided with a coating to improve the frictional engagement between the traction sheave and
the hoisting ropes.
Previously known is e.g. an elevator solution without machine room as disclosed in speciftca-
tion WO 03/066498, wherein a gearless hoisting machine having an axial length larger than the
diameter of the machine is mounted on guide rails in an elevator shaft. One end of the machine
is supported on a counterweight guide rail while the other end is supported on a car guide rail,
the guide rail lines of the guide rails being perpendicular to each other. In addition, a diverting
pulley is provided below the machine for so-called Double Wrap roping. The diverting pulley
is placed in a typical manner in the rope suspension and the diverting pulley is aligned at in-
stallation time very accurately with the traction sheave to ensure a correct passage of the ropes.
A drawback with the disclosed solution is the space required in the elevator shaft due to the
placement of the machine. The size of the machine itself and the size of the mounting of the
machine take up space in the cross-sectional area of the elevator and thus reduce e.g. the cross-
sectional area of the elevator that can be accommodated in the shaft. An additional drawback is
that the auxiliary diverting pulley required in the Double Wrap solution has to be aligned at an
exactly correct angle relative to the position of the traction sheave. This aligning has to be done
accurately, so it is difftcult and takes time in cramped shaft conditions. Moreover, special tools
may be needed. As a consequence of the above circumstances, the aligning is on the whole a
relatively expensive operation.
The object of the present invention is to overcome the above-mentioned drawbacks and to


achieve a space-saving elevator suspension arrangement of economical cost that will make it
possible to install an auxiliary diverting pulley for Double Wrap suspension below the traction
sheave in an exactly correct position without time-consuming and difficult adjustments. A fur-
ther object of the suspension arrangement of the invention is to enable the aforesaid auxiliary
diverting pulley to be secured in conjunction with the hoisting machine without separate and
voluminous mounting solutions.
Accordingly, the present invention provides a suspension arrangement for an elevator, which
elevator preferably is an elevator without machine room and in which elevator the hoisting ma-
chine is connected via a traction sheave to hoisting ropes, by means of which the elevator car is
moved, and which hoisting machine comprises at least a stator frame secured to a mounting
place in the elevator shaft and a traction sheave and a rotor frame forming a fixed assembly,
which assembly is mounted with bearings so as to be rotatable with respect to the stator frame,
and which hoisting machine is secured to a stiffener bracing the stator frame, characterized in
that the stiffener comprises a support for mounting a bearing, said support being preferably
located below the traction sheave and extending in a direction towards the hoisting machine, on
which support is mounted with a bearing a freely rotating auxiliary diverting pulley and that
both a support for mounting the bearing of the traction sheave that forms the axle of the traction
sheave and the support for mounting a bearing that forms the axle of the auxiliary diverting pul-
ley are permanently integrated with the stiffener.
The invention also provides an elevator hoisting machine, which hoisting machine comprises at
least a stator frame and a fixed assembly of a traction sheave and a rotor frame, which assembly
is mounted on bearings so as to be rotatable with respect to the stator frame, and which hoisting
machine is secured to a stiffener bracing the stator frame, wherein the stiffener comprises a
support for a bearing, said support being preferably situated below the traction sheave and ex-
tending in a direction towards the hoisting machine, on which support is mounted with a bear-
ing a freely rotatable auxiliary diverting pulley.
Other embodiments of the invention are disclosed hereinafter. Inventive embodiments are also
presented in the description part of the present application. The inventive content disclosed in
the application can also be defmed in other ways than is done hereinafter. The inventive content
may also consist of several separate inventions, especially if the invention is considered in the
light of explicit or implicit sub-tasks or in respect of advantages or sets of advantages achieved.
In this case, some of the attributes contained hereinafter may be superfluous from the point of
view of separate inventive concepts.
The elevator hoisting machine suspension arrangement and the hoisting machine of the inven-
tion provide the advantage of a sturdy mounting solution in which the auxiliary diverting pulley
to be installed in conjunction with it can be automati-


rections, the outer end of each bracket being connected to the stator frame 26 by means of a
fastening part 30. In addition, the stiffener 22 or the stator frame 26 comprises at least one
brake 24 serving as the brake of the elevator. The brake 24 may simultaneously function as a
mass body that has been arranged to make the mass distribution and bending stiffness of the
stator frame substantially unsymmetrical to suppress undesirable vibrations.
The lower part of the stiffener 22 stiffening and bracing the hoisting machine is close to the
traction sheave 5, at a suitable distance below the traction sheave a support 23 for a bearing,
said support being preferably a cylindrical projection extending from the stiffener 22 towards
the hoisting machine. The support 23 constitutes an axle for the auxiliary diverting pulley 7,
which is mounted with a bearing on the support 23 below the traction sheave 5 so as to be
freely rotatable. The auxiliary diverting pulley 7 makes it possible to use so-called Double
Wrap suspension, which can be utilized to increase the contact angle on the traction sheave 5
and thereby the gripping force achieved via friction. In such Double Wrap suspension, the
ropes 3 coming to the traction sheave run tangentially past the auxiliary diverting pulley 7 as
explained above.
Fig.3 presents a vertically sectioned hoisting machine 4 and Fig. 4 presents a vertically sec-
tioned stiffener 22 partially integrated with the stator frame. In Fig. 3, the vertical section of the
hoisting machine is not taken along a plane passing directly via the center line. Fig. 3 also
shows the stator frame 26 secured to the stiffener 22. The traction sheave 5 is shown in a sec-
tioned form and rotatably mounted on the bearing surface 27 of the support for the traction
sheave bearing 31 on the stiffener 22, said support being preferably a cylindrical projection.
The support for the traction sheave bearing 31 is integrated with the stiffener 22 and extends
from the stiffener towards the hoisting machine, forming the axle of the traction sheave 5. The
auxiliary diverting pulley 7 below the traction sheave 5 is mounted with a bearing on a bearing
surface 28 machined on the cylindrical support 23 permanently integrated with the stiffener 22,
which bearing surface has been ready machined at the desired angle to the corresponding bear-
ing surface 27 for the traction sheave 5, which bearing surface has likewise been integrated
with and machined in the stiffener 22. In other words, both bearing surfaces have been ready
machined at a desired angle to each other already during manufacture of the stiffener 22. There-
fore, both the traction sheave 5 and the auxiliary diverting pulley 7 can be automatically moun-

ted at the correct angle relative to each other durtng installation.
It is obvious to the person skilled in the art that the invention is not limited to the example de-
scribed above. Thus, the invention is not necessarily limited even to Double Wrap type elevat-
ors, but the elevator suspension arrangement can be implemented in the same way even in
Single Wrap type elevators in which the auxiliary diverting pulley is disposed in the same way
as described above but the hoisting ropes are passed only once around the traction sheave, so
the contact angle of the rope on the traction sheave is about 180°. The auxiliary diverting pulley
below the traction sheave is only used for "tangential contact" of the rope in the manner de-
scribed above, in which case the auxiliary diverting pulley functions as a rope guide and a
damping sheave suppressing vibrations. The hoisting ropes may also be passed crosswise by
means of the auxiliary diverting pulley, in which case a contact angle larger than 180° on the
traction sheave is obtained.
It is further obvious to the person skilled in the art that the place and method of suspension may
differ from the above description. Instead of being mounted on a guide rail, the hoisting ma-
chine may be mounted on a supporting beam connecting the guide rails, or the hoisting ma-
chine may be mounted on

We Claim :
1. A suspension arrangement for an elevator, which elevator preferably is an elevator without
machine room and in which elevator the hoisting machine (4) is connected via a traction sheave
(5) to hoisting ropes (3), by means of which the elevator car (1) is moved, and which hoisting
machine (4) comprises at least a stator frame (26) secured to a mounting place in the elevator
shaft and a traction sheave (5) and a rotor frame (25) forming a fIxed assembly, which
assembly is mounted with bearings so as to be rotatable with respect to the stator frame, and
which hoisting machine (4) is secured to a stiffener (22) bracing the stator frame (26),
characterized in that the stiffener (22) comprises a support for mounting a bearing (23), said
support being preferably located below the traction sheave (5) and extending in a direction
towards the hoisting machine, on which support is mounted with a bearing a freely rotating
auxiliary diverting pulley (7) and that both a support (31) for mounting the bearing of the
traction sheave that forms the axle of the traction sheave (5) and the support (23) for mounting
a bearing that forms the axle of the auxiliary diverting pulley (7) are permanently integrated
with the stiffener (22).
2. A suspension arrangement as claimed in claim 1, wherein both the bearing surface (27) of
the support for mounting the bearing of the traction sheave that forms the axle of the traction
sheave (5) and the support (23) for mounting a bearing that forms the axle of the auxiliary
diverting pulley (7) have been machined beforehand during manufacture of the stiffener (22).
3. A suspension arrangement as claimed in claim 1 or 2, wherein the bearing surface (27) for
the traction sheave and the bearing surface (28) for the auxiliary diverting pulley have been so
machined that they are at angle relative to each other such that the plane of rotation of the
traction sheave differs from the plane of rotation of the auxiliary diverting pulley in such
manner that the hoisting ropes between the traction sheave and the auxiliary diverting pulley
are passed between each other in a way as advantageous as possible in respect of operation.
4. A suspension arrangement as claimed in any one of the preceding claims, wherein the
hoisting machine is secured directly to a guide rail or via a separate mounting to one or more
guide rails or to some other suitable place in the elevator shaft.
5. A suspension arrangement as claimed in any one of the preceding claims, wherein the
stiffener (22) is a solid casting.
6. An elevator hoisting machine, which hoisting machine comprises at least a stator frame (26)
and a fIxed assembly of a traction sheave (5) and a rotor frame (25), which assembly is
mounted on bearings so as to be rotatable with respect to the stator frame, and which hoisting
machine is secured to a stiffener (22) bracing the stator frame (26), characterized in that the
stiffener (22) comprises a support (23) for a bearing, said support being preferably situated
below the traction sheave (5) and extending in a direction towards the hoisting machine, on
which support is mounted with a bearing a freely rotatable auxiliary diverting pulley (7) and
that both a support (31) for mounting the bearing of the traction sheave that forms the axle of
the traction sheave (5) and the support (23) for mounting a bearing that forms the axle of the
auxiliary diverting pulley (7) are permanently integrated with the stiffener (22).


The invention relates to a suspension arrangement for an elevator, which elevator preferably is an
elevator without machine room and in which elevator the hoisting machine (4) is connected via a
traction sheave (5) to hoisting ropes (3), by means of which the elevator car (1) is moved, and which
hoisting machine (4) comprises at least a stator frame (26) secured to a mounting place in the elevator
shaft and a traction sheave (5) and a rotor frame (25) forming a fixed assembly, which assembly is
mounted with bearings so as to be rotatable with respect to the stator frame, and which hoisting machine
(4) is secured to a stiffener (22) bracing the stator frame (26). The stiffener (22) comprises a support for
mounting a bearing (23), said support being preferably situated below the traction sheave (5) and
extending in a direction towards the hoisting machine, on which support is mounted with a bearing a
freely rotating auxiliary diverting pulley (7).

Documents:

01384-kolnp-2006-abstract.pdf

01384-kolnp-2006-assignment.pdf

01384-kolnp-2006-claims.pdf

01384-kolnp-2006-correspondence others-1.1.pdf

01384-kolnp-2006-correspondence others.pdf

01384-kolnp-2006-description complete.pdf

01384-kolnp-2006-drawings.pdf

01384-kolnp-2006-form 1.pdf

01384-kolnp-2006-form 3.pdf

01384-kolnp-2006-form 5.pdf

01384-kolnp-2006-form-3-1.1.pdf

01384-kolnp-2006-international publication.pdf

01384-kolnp-2006-international search authority report.pdf

1384-KOLNP-2006-ABSTRACT.pdf

1384-KOLNP-2006-AMANDED CLAIMS.pdf

1384-KOLNP-2006-AMANDED PAGES OF SPECIFICATION.pdf

1384-kolnp-2006-assignment.pdf

1384-KOLNP-2006-CANCELLED PAGES.pdf

1384-KOLNP-2006-CORRESPONDENCE 1.2.pdf

1384-KOLNP-2006-CORRESPONDENCE 1.3.pdf

1384-KOLNP-2006-CORRESPONDENCE-1.1.pdf

1384-KOLNP-2006-CORRESPONDENCE.pdf

1384-kolnp-2006-correspondence1.4.pdf

1384-KOLNP-2006-DESCRIPTION (COMPLETE).pdf

1384-KOLNP-2006-DRAWINGS.pdf

1384-kolnp-2006-examination report.pdf

1384-KOLNP-2006-FORM 1.pdf

1384-kolnp-2006-form 18.pdf

1384-KOLNP-2006-FORM 2.pdf

1384-kolnp-2006-form 3.1.pdf

1384-KOLNP-2006-FORM 3.pdf

1384-kolnp-2006-form 5.pdf

1384-KOLNP-2006-FORM-27.pdf

1384-kolnp-2006-gpa.pdf

1384-kolnp-2006-granted-abstract.pdf

1384-kolnp-2006-granted-claims.pdf

1384-kolnp-2006-granted-description (complete).pdf

1384-kolnp-2006-granted-drawings.pdf

1384-kolnp-2006-granted-form 1.pdf

1384-kolnp-2006-granted-form 2.pdf

1384-kolnp-2006-granted-letter patent.pdf

1384-kolnp-2006-granted-specification.pdf

1384-KOLNP-2006-OTHERS PCT FORM.pdf

1384-KOLNP-2006-OTHERS-1.1.pdf

1384-KOLNP-2006-OTHERS.pdf

1384-KOLNP-2006-PETITION UNDER RULE 137.pdf

1384-KOLNP-2006-REPLY TO EXAMINATION REPORT.pdf

1384-kolnp-2006-reply to examination report1.1.pdf

abstract-01384-kolnp-2006.jpg


Patent Number 247384
Indian Patent Application Number 1384/KOLNP/2006
PG Journal Number 14/2011
Publication Date 08-Apr-2011
Grant Date 04-Apr-2011
Date of Filing 23-May-2006
Name of Patentee KONE CORPORATION
Applicant Address KARTANONTIE 1, FI-00330 HELSINKI
Inventors:
# Inventor's Name Inventor's Address
1 AULANKO ESKO KAENKATU 6 C 33, FI-04230 KERAVA
2 MUSTALAHTI JORMA RAIVAAJANTIE 13, FI-05620 HYVINKAA
PCT International Classification Number B66B11/00
PCT International Application Number PCT/FI2004/000704
PCT International Filing date 2004-11-22
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 20031718 2003-11-24 Finland