FIELD OF THE INVENTION
The present invention relates to an apparatus for lifting and turning of wound pole
assembly in hydro generators/synchronous motors.
BACKGROUND OF THE INVENTION
Background description includes information that may be useful in understanding
the present subject matter. It is not an admission that any of the information
provided herein is prior art or relevant to the presently claimed subject matter, or
that any publication specifically or implicitly referenced is prior art.
In existing field poles, they carry the magnetic flux generated by the field coils and
mechanically position the field coils. These poles are made up of pole sheet
punchings or laminations clamped together by pole end plates and bolted together.
Pole pieces are made with a T-slot or dovetail projection to fit slots in the rim
punchings to withstand the stresses at over speed and to prevent any relative
movements of punchings. These wound poles to be lifted and turned for packing
and assembly with the rotor. Wound pole is transported in horizontal position. At
site it has to be lifted and turned to horizontal position for assembly with rotor.
Prior-art synchronous alternators and electrical motors are, constructed with stators
in which hollow, cylindrical, laminated, magnetic cores of the stators surround the
magnetic portions of the rotors. The excitation field windings of alternators and of
excitation-type motors are usually mounted on the rotors of such prior-art devices.
Energizing of the field windings is typically accomplished through magnetic flux

generated by the field coils and to direct-current electrical-energy sources that are
external to the rotors or, in some brushless machines, through direct-current
electrical-energy sources fabricated within the rotor structures. Structures having
field coils require a relatively large number of parts and, therefore, increased cost
of manufacture. Maintenance costs are also increased because of the limited life
span of field coils and other parts.
As an example of the prior art, US Patent. No: US7112907B2 discloses a stator and
armature assembly 12 is provided for a permanent magnet DC motor. The assembly
includes an armature 13 having a lamination core 14 and windings 15, and a stator
structure 16 associated with the armature. The armature is constructed and
arranged to rotate with respect to the stator structure. The stator structure includes
at least one permanent magnet 22 providing a certain flux, and at least one wound
core structure 17 having a core 18 and a coil 19 wound about the core so as to
define an alternate pole with respect to the permanent magnet. When current to
the coil is controlled, flux of the stator structure 16 can be increased or decreased
relative to the certain flux. In this way a motor can operate at different speeds.
Existing prior art such as CN204103697U relates to a large synchronous motor
magnetic pole turning and lifting device. The large synchronous motor magnetic
pole turning and lifting device comprises a turning part and a lifting part, wherein
the turning part comprises an upper circular disc, a lower circular disc, a connecting
plate and a reinforcing rib; the lifting part comprises a lifting ring, connecting plates
and lifting tool clamping bars; and the lifting ring is connected with the connecting
plates through hinge pins, the connecting plates and the lifting tool clamping bars
are assembled together through long and short cross shafts, the four lifting tool

clamping bars are connected in series through a rotating shaft, and finally, the two
groups of lifting tool clamping bars are firmly connected by using long and short
connecting rods. By adopting the structure provided by the utility model, the large
synchronous motor magnetic pole turning and lifting device can realize the effect
that a magnetic pole turns over by 180 degrees stably and lifted up stably. The
large synchronous motor magnetic pole turning and lifting device is reasonable in
structure, simple and labor-saving in operation and use and good in safety
performance, and can ensure the product quality and meet production
requirements.
Another example CN201821226U disclose a lifting device of a large synchronous
motor, comprising a lifting shoulder pole made of a rectangular steel plate; the
upper side of the rectangular lifting shoulder pole is provided with two lifting lugs;
the two lifting lugs are arranged at a specified interval and are bilaterally
symmetrical to the central part of the lifting shoulder pole; in addition, the lower
side of the rectangular lifting shoulder pole is further provided with at least more
than one pair of lifting points which arranged at specified intervals and are
bilaterally symmetrical to the central part of the lifting shoulder pole.
Thus, there remains a need for an apparatus for lifting and turning of wound pole
in synchronous motors or hydro generators.
OBJECTS OF THE INVENTION
In view of the foregoing limitations inherent in the state of the art, some of the
objects of the present disclosure, which at least one embodiment herein satisfy, are
listed herein below.

It is an object of the present disclosure to propose an apparatus for lifting and
turning of wound pole assembly in hydro generators/synchronous motors without
external source of supply.
It is another object of the present disclosure to propose the apparatus for lifting
and turning of wound pole assembly in hydro generators/synchronous motors
without skilled manpower.
It is yet another object of the present disclosure to propose the apparatus for lifting
and turning of wound pole assembly in hydro generators/synchronous motors which
is simple in construction and easy to use.
It is still yet another object of the present disclosure to propose the apparatus for
lifting and turning of wound pole assembly in hydro generators/synchronous motors
which reduce chance of damage of field poles.
These and other objects and advantages of the present invention will be apparent
to those skilled in the art after a consideration of the following detailed description
taken in conjunction with the accompanying drawings in which a preferred form of
the present invention is illustrated.
SUMMARY OF THE INVENTION
This summary is provided to introduce concepts related to an apparatus for lifting
and turning of wound pole assembly in hydro generators/synchronous motors. The
concepts are further described below in the detailed description. This summary is

not intended to identify key features or essential features of the claimed subject
matter, nor is it intended to be used to limit the scope of the claimed subject matter.
The present disclosure relates to apparatus for lifting and turning wound pole
assembly in synchronous motors comprising: a lifting crane comprising at least one
electric motor and a hanging member having a connecting point projection and
connected to a top support plate assembly. A top portion of a pole end plate
connected to the bottom portion of the top support plate assembly using a fastening
assembly. A wound pole assembly is fixed to the bottom portion of the pole end
plate using a stud, a nut hex, and a screw hex. A bottom support plate assembly
securely fastened to the bottom portion of the pole end plate for turning the wound
pole assembly to a target position.
The present disclosure relates to a method for lifting and turning wound pole
assembly in synchronous motors, comprising the steps of: connecting a top support
plate assembly to a lifting crane comprising at least one electric motor and a
hanging member having a connecting point projection. Connecting a top portion of
a pole end plate to the bottom portion of the top support plate assembly using a
fastening assembly. Fixing a wound pole assembly to the bottom portion of the pole
end plate using a stud, a nut hex, and a screw hex. Fastening securely a bottom
support plate assembly to the bottom portion of the pole end plate for turning the
wound pole assembly to a target position.
In an aspect, the lifting and turning of wound pole assembly could scroll, smooth
180 ° in effect which automatically adjust the angle and clamping effect reaches a
plateau lifting effect.

Other objects, features and advantages of the present disclosure will become
apparent from the following detailed description. It should be understood, however,
that the detailed description and the specific examples, while indicating specific
embodiments of the invention, are given by way of illustration only, since various
changes and modifications within the spirit and scope of the invention will become
apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
While the specification concludes with claims particularly pointing out and distinctly
claiming the subject matter that is regarded as forming the present subject matter,
it is believed that the present disclosure will be better understood from the following
description taken in conjunction with the accompanying drawings, where like
reference numerals designate like structural and other elements, in which:
FIG. 1 shows a wound pole lifting and turning apparatus in synchronous motors in
an embodiment of the present invention;
FIG. 2 shows a bottom support plate assembly of the wound pole lifting and turning
apparatus in an embodiment of the present invention; and
FIG. 3 shows a top support plate assembly of the wound pole lifting and turning
apparatus in an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The detailed description of various exemplary embodiments of the disclosure is
described herein with reference to the accompanying drawings. It should be noted

that the embodiments are described herein in such details as to clearly
communicate the disclosure. However, the amount of details provided herein is not
intended to limit the anticipated variations of embodiments; on the contrary, the
intention is to cover all modifications, equivalents, and alternatives falling within
the spirit and scope of the present disclosure as defined by the appended claims.
It is also to be understood that various arrangements may be devised that, although
not explicitly described or shown herein, embody the principles of the present
disclosure. Moreover, all statements herein reciting principles, aspects, and
embodiments of the present disclosure, as well as specific examples, are intended
to encompass equivalents thereof.
The terminology used herein is for the purpose of describing particular
embodiments only and is not intended to be limiting of example embodiments. As
used herein, the singular forms “a”, “an”, and “the” are intended to include the
plural forms as well, unless the context clearly indicates otherwise. It will be further
understood that the terms “comprises”, “comprising”, “includes”, “consisting”
and/or “including” when used herein, specify the presence of stated features,
integers, steps, operations, elements and/or components, but do not preclude the
presence or addition of one or more other features, integers, steps, operations,
elements, components and/or groups thereof.
It should also be noted that in some alternative implementations, the functions/acts
noted may occur out of the order noted in the figures. For example, two figures
shown in succession may, in fact, be executed concurrently or may sometimes be
executed in the reverse order, depending upon the functionality/acts involved.

Unless otherwise defined, all terms (including technical and scientific terms) used
herein have the same meaning as commonly understood by one of ordinary skill in
the art to which example embodiments belong. It will be further understood that
terms, e.g., those defined in commonly used dictionaries, should be interpreted as
having a meaning that is consistent with their meaning in the context of the relevant
art and will not be interpreted in an idealized or overly formal sense unless expressly
so defined herein.
Embodiments explained herein pertain to an apparatus for lifting and turning of
wound pole in hydro generators/synchronous motors. FIG. 1 shows a wound pole
lifting and turning apparatus 100 in synchronous motors in an embodiment of the
present invention. The apparatus 100 for lifting and turning of wound pole consists
of a bottom support plate assembly 1, a fastening assembly 2, a stud 3, a nut hex
4, a screw hex 5, a top support plate assembly 6, a pole end plate 8, a lifting crane
10, a wound pole assembly 12, a connecting point projection 14 and a hanging
member 16. The lifting and turning of the wound pole assembly 12 using the help
of top support plate assembly 6 as shown in FIG.1. For turning the wound pole
assembly 12, the bottom support plate assembly 1 is fixed to the pole end plate 8
using the fastening assembly 2, the stud 3, the nut hex 4, and the screw hex 5.
FIG. 2 shows a bottom support plate assembly 1 of the wound pole lifting and
turning apparatus 100 in an embodiment of the present invention. The lifting crane
10 comprising at least one electric motor and a hanging member 16 having a
connecting point projection 14 and connected to a top support plate assembly 6.
A top portion of the pole end plate 8 connected to the bottom portion of the top

support plate assembly 6 using a fastening assembly 2. The wound pole assembly
12 is fixed to the bottom portion of the pole end plate 8 using the stud 3, the nut
hex 4, and the screw hex 5. The bottom support plate assembly 1 securely fastened
to the bottom portion of the pole end plate 8 for turning the wound pole assembly
12 to a target position.
FIG. 3 shows a top support plate assembly 6 of the wound pole lifting and turning
apparatus 100 in an embodiment of the present invention. Connecting the top
support plate assembly 6 to the lifting crane 10 comprising at least one electric
motor and the hanging member 16 having a connecting point projection 14.
Connecting the top portion of a pole end plate 8 to the bottom portion of the top
support plate assembly 6 using a fastening assembly 2. Fixing the wound pole
assembly 12 to the bottom portion of the pole end plate 8 using the stud 3, the
nut hex 4, and the screw hex 5. Fastening securely the bottom support plate
assembly 1 to the bottom portion of the pole end plate 8 for turning the wound
pole assembly 12 to the target position.
In one embodiment the lifting crane 10 could include an electric cable, a permanent
magnet structure and the interaction between the permanent magnet results in
magnetic flux. In addition, the inclusion of the at least one electric motor in an
improved lifting and turning of wound pole assembly 12 is desired, which works
even under heavy load conditions. The wound pole lifting and turning apparatus
100 is a compact elevator drive unit ready for lifting and turning. This object is
inventively achieved in that on the one hand, the longitudinal axes of the lifting

crane 10 continue to be for the permanent magnet structure parallel to the
rotational axis of the top support plate assembly 6, and associated with magnetic
pole which is composed of permanent magnet members, and wherein the
permanent magnet elements of each pole in the longitudinal direction as far as
sequentially offset from one another on the associated hanging member 16 are
mounted, so that the load pulsation of the synchronous motor with respect to the
non-offset arrangement reduces or completely extinguished.
In a preferred embodiment the fastening assembly 2 is a bolt. A spacer element
has been integrated in the fastening assembly 2. The synchronous motors is a
hydro-generator. The screw hex 5 has at least one of six edges and formed concave
arc shape. The lifting and turning of wound pole assembly 12 could scroll, smooth
180 ° in effect which automatically adjust the angle and clamping effect reaches a
plateau lifting effect.
Although the above detailed description illustrates wound pole lifting and turning
apparatus 100 consistent with the present invention in the context of a
synchronous generator, it will be clear to one of skill in the art that the wound pole
lifting and turning apparatus 100 of the present invention may be applied to any
lifting apparatus that utilizes heavy objects or components. Thus, the scope of the
invention should be determined by the appended claims and their legal equivalents,
rather than by the examples given above.

TECHNICAL ADVANTAGE
The present disclosure proposes an apparatus for lifting and turning of wound pole
assembly effectively utilized in hydro generators/synchronous motors
The present disclosure proposes an apparatus for lifting and turning of wound pole
assembly in a simple, optimized and cost effective design for utilization in various
projects.
The present disclosure proposes an apparatus for lifting and turning of wound pole
assembly which reduces chance of damage of wound poles and field coils.
The present disclosure proposes an apparatus for lifting and turning of wound pole
assembly which is safer to use.
The present disclosure proposes an apparatus for the lifting and turning wound
pole assembly having reasonable structure, operation, simple to use, effort, and
good safety performance.
Furthermore, each of the appended claims defines a separate invention, which for
infringement purposes is recognized as including equivalents to the various
elements or limitations specified in the claims. Depending on the context, all
references below to the “invention” may in some cases refer to certain specific
embodiments only. In other cases, it will be recognized that references to the
“invention” will refer to subject matter recited in one or more, but not necessarily
all, of the claims.

Groupings of alternative elements or embodiments of the invention disclosed herein
are not to be construed as limitations. Each group member can be referred to and
claimed individually or in any combination with other members of the group or other
elements found herein. One or more members of a group can be included in, or
deleted from, a group for reasons of convenience and/or patentability. When any
such inclusion or deletion occurs, the specification is herein deemed to contain the
group as modified thus fulfilling the written description of all groups used in the
appended claims.
Furthermore, those skilled in the art can appreciate that the terminology used
herein is for the purpose of describing particular embodiments only and is not
intended to be limiting of the present disclosure. It will be appreciated that several
of the above-disclosed and other features and functions, or alternatives thereof,
may be combined into other systems or applications. Various presently unforeseen
or unanticipated alternatives, modifications, variations, or improvements therein
may subsequently be made by those skilled in the art without departing from the
scope of the present disclosure as encompassed by the following claims.
The claims, as originally presented and as they may be amended, encompass
variations, alternatives, modifications, improvements, equivalents, and substantial
equivalents of the embodiments and teachings disclosed herein, including those
that are presently unforeseen or unappreciated, and that, for example, may arise
from applicants/patentees and others.

While the foregoing describes various embodiments of the present disclosure, other
and further embodiments of the present disclosure may be devised without
departing from the basic scope thereof. The scope of the present disclosure is
determined by the claims that follow. The present disclosure is not limited to the
described embodiments, versions or examples, which are included to enable a
person having ordinary skill in the art to make and use the invention when combined
with information and knowledge available to the person having ordinary skill in the
art.

WE CLAIM:
1. An apparatus for lifting and turning wound pole assembly (12) in synchronous
motors comprising:
- a lifting crane (10) having at least one electric motor and a cantilever type
member (16) with a pointed projection (14) connected to a top support plate
assembly (6);
- a top portion of a pole end plate (8) connected to the bottom portion of the
top support plate assembly (6) using a fastening means (2);
- a wound pole assembly (12) fixed to the bottom portion of the pole end plate
(8) using a stud (3), a nut hex (4), and a screw hex (5); and wherein
- a bottom support plate assembly (1) securely fastened to the bottom portion
of the pole end plate (8) for turning the wound pole assembly (12) to a
target position.

2. The apparatus as claimed in claim 1, wherein the fastening means (2) is a bolt.
3. The apparatus as claimed in claim 1, wherein a spacer element is integrated
with the fastening means (2).
4. The apparatus as claimed in claim 1, wherein the synchronous motors is a
hydro-generator.
5. The apparatus as claimed in claim 1, wherein the screw hex (5) has at least
one of six edges and formed as a concave arc.
6. A method for lifting and turning wound pole assembly (12) in synchronous
motors, comprising the steps of:
- connecting a top support plate assembly (6) to a lifting crane (10) having at
least one electric motor and a cantilever type member (16) with a pointed
projection (14);

- connecting a top portion of a pole end plate (8) to the bottom portion of the
top support plate assembly (6) using a fastening means(2);
- fixing a wound pole assembly (12) to the bottom portion of the pole end
plate (8) using a stud (3), a nut hex (4), and a screw hex (5); and wherein
- fastening securely a bottom support plate assembly (1) to the bottom portion
of the pole end plate (8) for turning the wound pole assembly (12) to a
target position.