DESC:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of invention:
A SWIVELING LIFTING LUG FOR LARGE METALLIC OBJECT

Applicant:
Mazagon Dock Shipbuilders Limited
A company Incorporated in India under the Companies Act, 1956
Under Ministry of Defence,
(A Govt. of India Undertaking)
Having address:
Dockyard Road, Mazagon,
Mumbai - 400010, Maharashtra, India

The following specification particularly describes the invention and the manner in which it is to be performed.
CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
[001] This patent application claims priority from Indian Provisional Application 201821043444 filed on November 19, 2018.

TECHNICAL FIELD
[002] The present subject matter described herein, in general, relates to a lifting device and more specifically to a lifting device for lifting and turning large dimension metallic object from vertical to horizontal direction.

BACKGROUND
[003] Generally, swiveling lugs for lifting and turning metallic object are available with screw ends. The screw ends may facilitate bolting with the metallic object to be lifted or available for direct welding with the metallic object. These swiveling lugs are small in size and have capacity up to 40 tons Safe Working Load (SWL). These are designed to lift large rigid body objects such as shafts, machined parts such as engines etc.
[004] However, to lift and turn shell like objects such as cylinders and conical objects, these swiveling lugs are unsuitable due to the inability of such objects to provide sufficient bearing for small screw size. Also for lifting and turning objects weighing in excess of 100 tons, these swiveling lugs are unsuitable due to their low load carrying capacity. Further, fabricated eye plates with shackles are also unsuitable as during the turning or manoeuvring, the orientation of eye plates changes which leads to reduction in capacity by 50%. Also such eye plates are not designed for out of plane loading because of very high thickness requirements.

SUMMARY
[005] Before the present swiveling lifting lug is described, it is to be understood that this application is not limited to the particular machine or an apparatus, and methodologies described, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a swiveling lifting lug for large metallic objects. The aspects are further elaborated below in the detailed description. This summary is not intended to identify essential features of the proposed subject matter nor is it intended for use in determining or limiting the scope of the proposed subject matter.
[006] A swiveling lifting lug comprises an eye plate, a cylindrical member, plurality of brackets configured to be mounted on the cylindrical member in a predefined manner and a plate. The plate is configured to be mounted on said cylindrical member.
[007] The swiveling lifting lug has an eye plate. The eye plate has a first hole for passing a sling and a second hole for accommodating said cylindrical member. The cylindrical member of the swiveling lifting lug is configured with plurality of holes for mounting a plate on the outer end of said cylindrical member for restricting movement of said eye plate within the cylindrical member. The said cylindrical member of the swiveling lifting lug is integrated with the plurality of mounting brackets and configured for mounting said swiveling lifting lug on the object to be lifted. The said eye plate of the swiveling lifting lug is pivotally mounted on said cylindrical member and configured for providing swiveling movement to the said eye plate relative to said cylindrical member. The plate of the swiveling lifting lug said plate is mounted on said cylindrical member by fastening means. The fastening means for the swiveling lifting lug can be one of a screw and a bolt. The said plurality of brackets of the swiveling lifting lug are integrally mounted on the periphery of the cylindrical member.

BRIEF DESCRIPTION OF THE DRAWINGS
[008] The foregoing summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there is shown in the present document example constructions of the disclosure, however, the disclosure is not limited to the specific methods and apparatus disclosed in the document and the drawings:
[009] The detailed description is described with reference to the accompanying figure. In the figure, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.
[0010] Figure 1 illustrates conventional swiveling lugs with screw ends.
[0011] Figure 2A, 2B, 2C illustrates a shackle, an out of plane loading and in plane loading respectively.
[0012] Figure 3 illustrates swiveling lifting lug connected to a conical shell object and a cylindrical shell object, in accordance with an embodiment of the present subject matter.
[0013] Figure 4A, 4B, 4C illustrates turning arrangement for cylindrical object using swiveling lifting lugs, in accordance with an embodiment of the present subject matter.
[0014] Figure 5 illustrates an exploded view of the swiveling lifting lug, in accordance with an embodiment of the present subject matter.
[0015] Figure 6A, 6B, 6C illustrates front view, rear view and top view respectively, in accordance with an embodiment of the present subject matter.
[0016] The figures depicts an embodiment of the present disclosure for purpose of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the object and method illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
[0017] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising," "generating,", “receiving”, "comprising,", “storing” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems for generating a virtual representation of an object are now described. The disclosed embodiments for swiveling lifting lug are merely exemplary of the disclosure, which may be embodied in various forms.
[0018] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure for swiveling lifting lug is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.
[0019] Conventional swiveling lifting lugs available in the market for lifting and turning objects are available with screw ends. The swiveling lifting lugs available in the market are small in size. As the swiveling lifting lugs are small in size, the diameter of the screw or the pin is small. On account of small bearing size of the conventional swiveling lifting lugs, they are not suitable for turning and lifting cylindrical and conical objects. Thus, the safe working load (SWL) capacity of the lugs to turn and lift the objects is limited. Further, the swiveling lifting lugs with screw ends or the lugs with pin are likely to fail during lifting of the object in the vertical direction due to shear force. Generally, lugs having a safe working load up to 40 tons are available in the market. Thus, the conventional swiveling lifting lugs are not suitable to lift and turn objects weighing in excess of 100 tons.
[0020] Also, fabricated eye plates with shackles are unsuitable for lifting and turning objects weighing more than 100 tons. During turning, fabricated eye plates experience change in orientation. The change in orientation leads to reduction in capacity. Furthermore, the fabricated eye plates are not designed for out of plane loading on account of very high thickness requirements. When the load angle is 0°, the capability of the swiveling lifting lug to lift load is equivalent to 100% of the safe working load (SWL). Further, when the load angle is 45°, the capability of the swiveling lifting lug to lift load is equivalent to 70% of the safe working load (SWL). Furthermore, when the load angle is 90°, the capability of the swiveling lifting lug is equivalent is 50% of the safe working load (SWL).
[0021] The present subject matter overcomes the above problems in the conventional swiveling lifting lug. The present subject matter discloses a swiveling lifting lug designed to lift and turn cylindrical and conical objects weighing in excess of 100 tons.
[0022] Referring now to figure 1, wherein the figure 1 discloses conventional swiveling lifting lugs. The convention swiveling lifting lug have a screw end. The screw end is engaged with the object to be lifted. The conventional swiveling lifting lugs are small in size and have the safe working load (SWL) capacity of up to 40 tons.
[0023] Referring now to figure 2A, a shackle is illustrated in accordance with an embodiment of the present subject matter. When the load angle is 0°, the capability of the swiveling lifting lug to lift load is equivalent to 100% of the safe working load (SWL). Further, when the load angle is 45°, the capability of the swiveling lifting lug to lift load is equivalent to 70% of the safe working load (SWL). Furthermore, when the load angle is 90°, the capability of the swiveling lifting lug is equivalent is 50% of the safe working load (SWL).
[0024] Referring now to figure 2B, an out of plane loading is illustrated. If the load is applied sideways, the shackle may bend or may experience shearing. Hence, it is not advisable or recommended to apply load sideways.
[0025] Referring now to figure 2C, an in plane loading is illustrated. The orientation of the shackle must always be in line with the slings. Loads should be always be applied to the shackles in the plane and not an angle to this plane. Angular lifts must never be more than 45° pull.
[0026] Referring now to figure 3. The figure 3 illustrates swiveling lifting lug connected to a conical and cylindrical shell object, in accordance with an embodiment of the present subject matter. The swiveling lifting lug is attached to the cylindrical or the conical shell object to be lifted and turned. The swiveling lifting lug can be fastened to the conical or the cylindrical shell objects. The conical or the cylindrical shell objects are lifted using a sling that passed through the swiveling lifting lug. The sling is further operated using a crane.
[0027] Referring now to Figure 4A, which illustrates turning and lifting arrangement for cylindrical object using swiveling lifting lugs. The cylindrical object is initially placed in a vertical positon. The swiveling lifting lug is fastened to the cylindrical object to be lifted and turned. Further, the swiveling lifting lug (1) has a provision to pass a sling through it. The sling connected to the crane is used to lift the cylindrical object. Further, a second eye plate (11) is fastened to the bottom portion of the cylindrical object. The eye plate (4) has a provision to pass the sling through it. Thus, the cylindrical object is lifted using sling, which is connected to the two attached points viz. swiveling lifting lug (1) and second eye plate (11). Furthermore, the sling passing through the swiveling lifting lug (1) is passed via the spreader beam (12).
[0028] Referring now to Figure 4B, which illustrates turning and lifting arrangement for cylindrical object using swiveling lifting lugs. The cylindrical object is now lifted using the crane via the sling. During lifting of the swiveling lifting lug (1), the cylindrical object is now turned due to the swiveling lifting lug fastened to the cylindrical object.
[0029] Referring now to Figure 4C, which illustrates turning and lifting arrangement for cylindrical object using swiveling lifting lugs. The cylindrical object which was initially in the vertical position is now turned to horizontal position due to the lifting action initiated by the sling of the crane.
[0030] Referring now to Figure 5, which illustrates a swiveling lifting lug (1). The swiveling lifting lug (1) comprises an eye plate (4), a cylindrical member (2), plurality of brackets (9) and a plate (8). The plurality of brackets (9) are integrally mounted on the periphery of the cylindrical member (2). The plurality of brackets (9) are fastened to the cylindrical member (2). The eye plate (4) has a first hole (5) for passing a sling and a second hole (6) for accommodating the cylindrical member (2). The eye plate (4) is pivotally mounted on the cylindrical member (2). The diameter of the second hole (6) is equivalent to the outer diameter of the cylindrical member (2). The cylindrical member (2) is configured to pass through the second hole (6). The cylindrical member (2) consists of plurality of holes. A plate (8) is mounted on the cylindrical member (2) at one end in order to restrict the movement of the eye plate (4) within the cylindrical member (2). The plate (8) is fastened to the cylindrical member (2). The swiveling lifting lug (1) is fastened to the object to be turned and lifted. More specifically, the plurality of brackets (9) are fastened to the object to be turned and lifted. During lifting of the object, the eye plate (4) which is pivotally mounted on the cylindrical member (2) undergoes swiveling movement relative to the cylindrical member (2). The cylindrical member (2) is made of large size diameter. Hence, the safe working load (SWL) capacity of the swiveling lifting lug (1) is exponentially increased. The fastening means may be one of a screw and a bolt. The fastening means may include welding.
[0031] Referring now to Figure 6A, 6B, 6C, which illustrates front view, rear view and top view respectively, in accordance with an embodiment of the present subject matter. The views represent assembly of the present invention.
[0032] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
[0033] Some embodiments of the swiveling lifting lug (1) provides safe working load (SWL) capacity up to 100 tons.
[0034] Some embodiments of the swiveling lifting lug (1) assist turning and lifting cylindrical and conical object.
,CLAIMS:
1. A swiveling lifting lug (1) comprises:
at least one eye plate (4);
at least one cylindrical member (2);
plurality of brackets (9) configured to be mounted on the cylindrical member (2) in a predefined manner; and
at least one plate (8) configured to be mounted on said cylindrical member(2).

2. The swiveling lifting lug (1) as claimed in claim 1, wherein said eye plate (4) has a first hole (5) for passing a sling and a second hole (6) for accommodating said cylindrical member (2).

3. The swiveling lifting lug (1) as claimed in claim 1, wherein said cylindrical member (2) is configured with plurality of holes for mounting said plate (8) on the outer end of said cylindrical member (2) for restricting movement of said eye plate (4) within the cylindrical member (2).

4. The swiveling lifting lug (1) as claimed in claim 1, wherein said cylindrical member (2) integrated with the plurality of brackets (9) is configured for mounting said swiveling lifting lug (1) on the object to be lifted.

5. The swiveling lifting lug (1) as claimed in claim 1, wherein said eye plate (4) is pivotally mounted on said cylindrical member (2) configured for providing swiveling movement to the said eye plate (4) relative to said cylindrical member (2).

6. The swiveling lifting lug (1) as claimed in claim 1, wherein said plate (8) is mounted on said cylindrical member (2) by fastening means.

7. The swiveling lifting lug (1) as claimed in claim 6, wherein the fastening means (7) is one of a screw and a bolt.
8. The swiveling lifting lug (1) as claimed in claim 1, wherein said plurality of brackets (9) are integrally mounted on the periphery of the cylindrical member (2).

9. The swiveling lifting lug (1) as claimed in claim 1, wherein said plate (8) has plurality of holes (10) for engaging with the said cylindrical member (2) by fastening means (7).