DRIVE SYSTEM IN THE DRIVE BENCH FOR MANUFACTURING OF SEAMLESS TUBES

TECHNICAL FIELD 5

[0001] The present disclosure relates, in general, to a method of forward and reverse mechanism used in the manufacturing of seamless steel tube in particular to a drive system in the drive bench for manufacturing/drawing of seamless tubes.
BACKGROUND 10
[0002] 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. 15
[0003] During the manufacturing of the seamless steel tube pipe draw bench is used for forwarding and reversing of the tubes. The existing draw bench uses hydraulic system for forwarding and reversing the tubes with controlled outside diameter and thickness to the carriage block. This forward and reverse mechanism for manufacturing seamless tubes operating through hydraulic system possesses 20 drawbacks like oil leakage, spears, wear and tear etc. which require regular maintenance. Due to these regular maintenances the rate of production gets very slow and production cost rises.
[0004] Therefore, in order to increase the productivity a new drive system is to be designed without using hydraulic system to draw/manufacture seamless steel 25 tubes.
OBJECTS OF THE DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
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[0006] An object of the present disclosure is to provide a drive system in the drive bench for forward and reverse mechanism of seamless tubes without using hydraulic system.
SUMMARY OF THE INVENTION
[0007] This summary is provided to introduce concepts related to a method 5 for protecting various hydro-turbine underwater components from acidic water corrosion. 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. 10
[0008] The present disclosure relates to a drive system in the drive bench for forward and reverse mechanism of seamless tubes without using hydraulic system. The system includes a main drive reversible motor connected with a reduction gear box unit by a coupling; a pair of sprockets connected to the output of the reduction gear box unit by a full gear coupling, said pair of sprockets are 15 meshed with a chain, wherein the pair of sprockets are supported with a heavy duty support brackets and said heavy duty support brackets are welded on a base plate, and wherein the pair of sprockets are rotated by bearings; and a pair of idler gears meshed with the bottom of said chain, said idler gears are rotated by bearings; wherein the main drive reversible motor performs forward and reverse 20 drawing of seamless tubes with the reduction gear box.
[0009] In an aspect, a gear box unit having gear ratio of 40:1 is connected to a main drive reversible motor of 315 kw capacity with 1000 rpm running by means of flange coupling. The motor can be used for forward and reverse rotation and the speed can be adjusted in the simple reduction gear box unit. 25
[0010] In an aspect, the gear box shaft is assembled with common output connected to main sprockets. The main sprockets are meshed with a chain with draw / return carriage. To maintain a gap of 800 mm between the chain the idler gears are used. 710 mm is the distance between the gears said above.
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BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, 5 and methods that are consistent with the subject matter as claimed herein, wherein:
[0012] FIG. 1 illustrates schematic arrangement of drive system used for draw bench.; and
[0013] FIG. 2 illustrates an arrangement of sprocket and idler gear on the 10 heavy duty support bracket.
DETAILED DESCRIPTION
[0014] 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 15 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. 20
[0015] 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. 25
[0016] 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” and/or 30 “including,” when used herein, specify the presence of stated features, integers,
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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.
[0017] 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, 5 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.
[0018] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of 10 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. 15
[0019] During the manufacturing of the seamless steel tube pipe draw bench is used for forwarding and reversing of the tubes. The existing draw bench uses hydraulic system for forwarding and reversing the tubes with controlled outside diameter and thickness to the carriage block. This forward and reverse mechanism for manufacturing seamless tubes operating through hydraulic system possesses 20 drawbacks like oil leakage, spears, wear and tear etc. which require regular maintenance. Due to these regular maintenance the rate of production gets very slow and production cost rises.
[0020] Therefore, in order to increase the productivity a new drive system is to be designed without using hydraulic system to draw/manufacture seamless steel 25 tubes. Referring to FIG.1 and FIG.2, a drive system in the drive bench for manufacturing of seamless tubes is provided. The system includes a main drive reversible motor (1) connected with a reduction gear box unit (3) by a coupling (2). The output of the gear box unit (3) is connected to a pair of sprockets (5) by a full gear coupling (4). The pair of sprockets (5) are meshed with a chain (9) and 30 are supported with a heavy duty support brackets (10). The heavy duty support
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brackets (10) are welded on a base plate (11). The pair of sprockets (5) are rotated by bearings (6). The bottom of said chain (9) is meshed with a pair of idler gears (7) and said idler gears (7) are rotated by bearings (12). The main drive reversible motor (1) performs forward and reverse drawing of seamless tubes with the reduction gear box (3). 5
[0021] Because of the less maintenance in the reduction gear box, the movement of the carriage (not shown) on the chain for tube drawing is uninterrupted and hence the productivity is substantially increased.
[0022] 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 10 herein, embody the principles of the invention and are included within its scope.
[0023] Furthermore, all examples recited herein are principally intended expressly to be only for pedagogical purposes to aid the reader in understanding the principles of the invention and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such 15 specifically recited examples and conditions. Also, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.
[0024] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are 20 familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[0025] The terminology used herein is for the purpose of describing particular 25 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 30
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those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0026] 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, 5 including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0027] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the 10 claims that follow. The invention 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. A drive system in the drive bench for manufacturing of seamless tubes, the system comprising:
a main drive reversible motor (1) connected with a reduction gear box unit (3) by a coupling (2); 5
a pair of sprockets (5) connected to the output of the reduction gear box unit (3) by a full gear coupling (4), said pair of sprockets (5) are meshed with a chain (9), wherein the pair of sprockets (5) are supported with a heavy duty support brackets (10) and said heavy duty support brackets (10) are welded on a base plate (11), and wherein the pair of sprockets (5) are 10 rotated by bearings (6); and
a pair of idler gears (7) meshed with the bottom of said chain (9), said idler gears (7) are rotated by bearings (12);
wherein the main drive reversible motor (1) performs forward and reverse drawing of seamless tubes with the reduction gear box (3). 15
2. The drive system as claimed in claim 1, wherein the main drive reversible motor (1) is of 315 kw and give gives 1000 RPM.
3. The drive system as claimed in claim 1 or 2, wherein the gear ratio of the reduction gear box unit (3) is 40:1.
4. The drive system as claimed in claim 1-3, wherein a gap of 800 mm is 20 maintained between the chain (9) with the idler gears (7) while positioning the idler gears (7) at a distance of 710 mm.