Claims:WE CLAIM:

1. A device for elevated load gyration comprising:
A circumscribable upper bracket 10, configured to be attached on load structure 20 utilizing cavities and grooves 23 provided on one distal end 28 of said load structure;
A lower bracket member 30; and
support members 50 & 53;
characterized in that the lower bracket member 30 and the support members 50 & 53 are configured opposite to each other on the one end 29 of the load structure 20 utilizing coupling holes available on flange 22 of the said load structure 20, wherein the upper end of the load structure 20 is rotatable with respect to the lower other end for turning the elevated heavy-load structure 20 about the support member 50 and also ensuring controlled traverse of load structure 20 through lower bracket member 30 at the same time.
2. A method for load gyration utilizing the device for load gyration as comprising:
securing groove plate 11 in matching recess in groove 23 of load structure 20 in such close tolerance that their relative rotational motion is completely constrained when subjected to elevation load;
affixing threadedly bracket member 10 with groove plate 11 through threaded means 15, 19 such that bracket 10 remain in clearance with load structure surface 24;
transporting load structure 20 above rest blocks W in a vertical position using hoisting means 70, 71 to be utilized through plurality of recess 14’ of bracket member 10;
affixing lower bracket member 30 threadedly towards the distal end 29 of the said load structure by utilizing hole 32 of bracket 30 and coupling hole 21 on load structure coupling flange 22;
affixing the bracket member 50 and collared plate 53 on either face of coupling hole 21 of load structure 20 using threaded means 55, 59; and
tilting elevated load member 20 about the pivot surface 51 of bracket member 50 using hoisting means 70, 71 on top member 10 at one end 28 of load structure while it is supported by hoisting means 72, 73, 74 on member 30 to simultaneously control the traverse movement of the load structure.
, Description:FIELD OF THE INVENTION
[001] The present invention relates broadly, but not exclusively, means for gyration of an elevated load. More particularly, the present invention is related to a device and method for elevated load gyration, along with hoisting means such as an overhead crane, which is capable of tilting as well as overturning of an elevated load such as a rotor used in power plants.

BACKGROUND OF THE INVENTION

[002] It is well known that the relative positions of a large-scale structure like dynamoelectric machines rotor, such as the one used in various industries viz. power, energy etc., can be different during different stages of processing, assembly, transportation and installation etc. Such structures are required to be put, in horizontal or upright positions, on various means such as assembly benches, scaffoldings, test beds, performance setups etc. during their lifecycle and are therefore required to be gyrated to upright or horizontal positions and in some cases at an angular position as well while the load is elevated.

[003] For various reasons it is often desirable to turn or rotate such rotors about their longitudinal axes, usually by 90°. Turning a rotor 90° about one edge, of course, have the tendency to displace it transversely off the table. It is desirable that the rotor turning apparatus be constructed so that it can be turned longitudinally.
[004] In a known embodiment, devices for turning over heavy and/or bulky loads which work by suspending the load to be turned over in two straps or the like, arranged as loops, then in driving these straps in order to pivot said load are already known.

[005] In more elaborate known embodiments, a method of overturning of load is mentioned in CN203728398U which discloses a transporting device for lifting, inverting and transport of large structures. The transporting device comprises a first hoop and a second hoop on a large-sized structural part, as well as a storage support and an overturning support on a work ground, wherein the first hoop is fixedly arranged at the upper end of the large-sized structural part, the second hoop is fixedly arranged at the lower end of the large-sized structural part, two first lifting lugs are symmetrically arranged on the first hoop, two second lifting lugs are symmetrically arranged on the second hoop, two first lug shaft seats are arranged on the storage support, two second lug shaft seats are arranged on the overturning support, and the second lifting lugs can rotate on the second lug shaft seats.

[006] However, the first and second hoops are formed by two connecting members by fasteners and its design is governed by the diameter of the large structure. Wherein the present invention is regarding load turning means that utilizes existing coupling design of the dynamoelectric machine rotor and correspondingly the design and concept of load turning means in present invention is completely different from the method mention in cited art. Also in cited art, for tilting the load, pivot action is attaining by two lifting ear of bottom hoop, flip bracket and crane. The complete control of tilting or overturn in cited art depends on the crane moments and for tilting and support of the large structure, it requires complex design of the flip bracket.

[007] Thus, there is a need to provide a device and method for turning an elevated structure that seek to address some of the above problems or provide a useful alternative.

OBJECTS OF THE INVENTION
[008] The primary object of the present invention is to provide a device for load gyration of an elevated load.
[009] Another object of the present invention is to provide a device for load gyration of an elevated load wherein said device is capable of tilting as well as overturning the elevated load.
[0010] Yet another object of the present invention is to provide a method of using the proposed device for load gyration of the elevated load.

SUMMARY OF THE INVENTION
[0011] According to a first aspect of the present invention, there is provided a device for gyration of an elevated load about a support member, the device comprising of a circumscribable upper bracket 10 configured to be attached on peripheral surface of rotor 20 utilizing groove 23 etc. provided on one distal end 28 of rotor 20; and a lower bracket member 30 and support member 50 configured to be attached to the edge of the opposite end 29 of the rotor 20 utilizing pump side coupling holes available on flange 22 of the said rotor, wherein the upper part 28 of the rotor is rotatable with respect to the lower bracket member 30 for turning the elevated heavy-load structure 20 about the support member 50.

BRIEF DESCRIPTION OF DRAWNGS
[0012] The foregoing and other features of the invention, comprising the load turning means and mechanism together with the construction and relative arrangement of the several parts, will be apparent from the following more particular description of the invention, as illustrated in the accompanying drawings, in which like reference characters refer to the same parts throughout the different figures and subsequently incorporated in the subjoined claims. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention and in which:

[0013] Figure 1 is a front view of position during 90° turning an elevated heavy load structure before assembly according to an example embodiment.

[0014] Figure 2.1 is a front view of top bracket member mounting arrangement of the said device for turning an elevated heavy load structure according to an example embodiment.

[0015] Figure 2.2 is a front view of top bracket member of the said device for turning an elevated heavy load structure according to an example embodiment.

[0016] Figure 3 is a front and side view of bottom bracket member of the said device for turning an elevated heavy load structure according to an example embodiment.

[0017] Figure 4 is a front view of support member of the said device for turning an elevated heavy load structure according to an example embodiment.

[0018] Figure 5 is a front view of lower support members of the said device for holding pivot end an elevated heavy load structure at vertical position according to an example embodiment.

[0019] Figure 6 is a side view of the said means circumscribably assembled on an elevated heavy load structure at a median position between horizontal and vertical position according to an example embodiment.

[0020] Figure 7 is a side view of the said means circumscribably assembled on an elevated heavy load structure at a horizontal position according to an example embodiment.

DETAIL DESCRIPTION OF THE INVENTION
[0021] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudo code, and the like represent various processes which may be substantially represented in computer readable medium and executed by a computer or processor, whether or not such computer or processor is explicitly shown.
[0022] In the present disclosure, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
[0023] While the present disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the present disclosure to the particular forms disclosed, but on the contrary, the present disclosure is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the present disclosure.
[0024] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
[0025] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0026] The present invention is directed to solve the above-described problems of the prior art and to provide a method and means for turning or rotating a load structure about its longitudinal axis in accordance with the present invention and to enable to perform required load turning operation easily and in short time while controlling its movement in transverse direction to prevent it from escaping or swaying from rest table or other scaffolding arrangement.
[0027] Referring now to figure 1 in detail, which shows a load structure such as a dynamoelectric rotor 20 being in an upright position as shown in figure 1 wherein the said rotor is contained in this position using hoisting means 70 for holding distal end 28 of said rotor 20 using plurality of slings 71. As apparent from position 1, the rotor 20 rests through its end 29 on resting means W placed over a horizontal service bed B of a facility. As the rotor is gyrated from position 1 to position 3 through an intermediate position 2 using support member 50, it has the tendency to slidably traverse a distance 40 on said resting means W. If this traversing is not controlled the rotor may escape the rest bed W surface and may sway and get damaged. Even if the load structure 20 do not escape the surface, the load placement may not be as per design such as to rest on a journal area etc. because of such a slidable traversing and may result in catastrophic damage to the load structure.

[0028] Referring now to figure 2.1, top bracket member 10 is shown to be circumscribably mounted on load structure 20 towards its one end 28. The bracket member 10 constitutes a disk-like top plate member 12 and bottom plate member 17, both radial to load structure axis Y. These circular disk-like plates 12,17 of equal radius are in parallel relation to each other and when mounted on structure 20, they remain in clearance with load structure surface 24. These plates 12,17 are both weldedly 16 connected on both ends of a circular vertical plate 18.

[0029] Hoist plate 13 is also vertically welded in space between plate 12 and plate 17 such that one set of parallel sides of plate 13 butts with plate 12 and plate 17 while one edge butts with plate 18.

[0030] The bracket member 10 (as shown in figure 2.2), along with member 11, is first circumscribably mounted on load structure 20. These are threadedly held through hole 15 and threaded means 19at this position through groove plates 11 such that groove plate 11 sits in the matching recess in groove 23.

[0031] The grove plate 11 is provided with a sling recess 14’ protruding out away from the rotor surface for accommodating slings 71 from hoisting means 70 and also with chamfered edge protruded part 14 adjacent to recess 14’ to increase the surface area that prevents the damage to slings.

[0032] Referring now to figure 3 and 4, lower bracket member 30 is shown that utilizes holes 21 of coupling flange 22 of load structure 20 to get threadedly affixed towards the distal end 29 of the said load structure. Unlike top bracket member 10, lower bracket member 30 is mounted on one half of the load structure 20 while the other half of the load structure 20 is provisioned with rotation support member 50, to support easy rotation of the load structure, which shall be discussed later. The rectangular cutout in member 30 is provided such that surface 39 and 38 sits on coupling flange 22 of the load structure 20 and that coupling holes 21 of coupling flange 22 matches with hole 32 of bracket 30. These matching holes 21, 32 utilizes threaded means that sits in face slot 33 to affix the bracket 30. The protruded part 34 on bracket 30 is provided with hole 31 protruding out away from the rotor surface for accommodating D-shackle 74 through which passes separate slings 73 from hoisting means 72 as shown in figure 5,6,7. Bracket 30 also constitutes a threaded hole 36 for its lifting through a crane. Also, to prevent damage to the coupling flange edges during engagement of load structure during the entire process, groove 35 is provisioned in the support member 30.

[0033] As shown in figure 4 in particular, L-shape support member 50 utilizes holes 21 of coupling flange 22 of load structure 20 to get threadedly affixed towards the distal end 29 of the said load structure. Support member is mounted on load structure half laterally opposite half provisioned with bracket member 30. The L-shape cutout in member 50 is provided such that surface 56 and 52 sits on coupling flange 22 of the load structure 20 and that hole 54 of bracket member 50 rests below center of coupling holes 21 of coupling flange 22. Collared Plate 53, having a similar hole 54, is placed above the coupling hole 21 such that a double end threaded studs 55 passes though hole 54 of plate 53 and bracket 50 as well as coupling hole 21. As a matching nut 59 is threadedly secured on both ends of the stud 55, the resulting compressible forces tightens the bracket member 50 as well as plate 53 to the coupling 22 of load structure 20.

[0034] As all the members of the turning means viz. bracket member 10, bracket member 30, support member 50 are affixed to the load structure 20, the load structure can be turned from vertical to a horizontal position in following method as per figure 5,6,7.

[0035] For turning a rotor from a vertical to horizontal position, load structure 20 can be first transported above rest blocks W in a vertical position using hoisting means 70 that uses slings 71 to be utilized through recess 14’ of bracket member 10. Once the load structure is uprightly placed, lower members such as support member 50 and bracket member 30 shall be in touch with block W through their surfaces 58 and 30’ respectively. The load member 20, as shown in figure 6, is now slowly titled about the pivot surface 51 such that it is rotatably supported from hoisting means 70 and sling 71 at one end 28 while it is supported by hoisting means 72 and sling 73 passing through a D-shackle 74 to control the traverse movement of the load structure. This results in turning of load structure from an initial upright position as in figure 5 to a horizontal position and resting of plurality of rest blocks W as shown in figure 7.

[0036] The aforementioned procedure can be suitably modified to rotate load structure from a horizontal position to vertical.
[0037] Though the present discussion relates to load gyration method and means, more particularly, for dynamoelectric machine rotor, it will be appreciated that the device and methods discussed may be readily adapted for use with other similar procedures. Further, it will be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the invention and are included within its scope.

[0038] The invention has been described in an illustrative manner, and it is to be understood that the terminology that has been used is intended to be in the nature of words of description rather than of limitation. Obviously, many modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the specification, the reference numerals are merely for convenience, and are not to be in any way limiting, the invention may be practiced otherwise than is specifically described.