The present disclosure relates to the field of earthing truck. More
particularly the present disclosure relates to an earthing truck with position indication arrangement.
BACKGROUND
[0002] Background description includes information that may be useful in
understanding the present invention. It is not an admission that any of the
information provided herein is prior art or relevant to the presently claimed
invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Conventionally, earthing trucks are used to earthen busbars of a
switchgear at the time of maintenance of the busbars. A position of the earthing truck inside the switchgear panel is very important for a person who is working on the switchgear panel. The switchgear bears a very high voltage and while earthing the switchgear it is very important to know if the earthing truck is at test position (OFF) or service position (ON). Generally, position indication of the earthing truck is enabled electrically using a limit switch mounted inside the switchgear panel. However, in case of failure of the electrical indication, wrong knowledge of the earthing trucks position can be fatal sometimes.
[0004] There is, therefore, a need of a mechanical indication that can be
used for identifying the position of the earthing truck in case of failure of the electrical indication of the position of the earthing truck.
OBJECTS OF THE PRESENT DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one
embodiment herein satisfies are as listed herein below.
[0006] It is an object of the present disclosure to provide an earthing truck
with position indication arrangement.
[0007] It is an object of the present disclosure to provide an earthing truck
with position indication arrangement for indicating rack-in and rack-out position
of the earthing truck.

[0008] It is an object of the present disclosure to provide an earthing truck
with a cost-effective position indication arrangement.
[0009] It is an object of the present disclosure to provide an earthing truck
with a cost-effective position indication arrangement that requires less
maintenance.
SUMMARY
[0010] The present disclosure relates to the field of earthing truck. More
particularly the present disclosure relates to an earthing truck with position indication arrangement.
[0011] An aspect of the present disclosure pertains to an earthing truck
adapted to be configured with a switchgear, the earthing truck includes a first unit, a second unit movably configured, between one or more positions, over the first unit. A position indication arrangement, operatively configured with the first unit and the second unit, and configured to indicate the one or more positions of the second unit over the first unit. The position indication arrangement includes a horizontal member configured over at least a part of a top surface of the first unit, and the horizontal member has a first portion having a first length and a first height, a second portion having a second length and second height, and a third portion having a third length and a third height. A vertical member, movably configured on the first member, and configured with the second unit such that a movement of the second unit, between the one or more positions, cause a movement of the vertical member over the first member. Moving the vertical member over the first portion, the second portion, and the third portion causes corresponding one or more variations in a fourth height, with respect to the top surface, of the vertical member. The fourth height indicates each of the one or more positions of the second unit.
[0012] In an aspect, the first height may be less than the second height,
and the second height may be less than the third height. A first transition between the first portion and the second portion, and a second transition between the second portion and the third portion may comprise a profile facilitating movement

of the vertical member over the horizontal member. The profile may comprise any
or combination of a ramp, and curve. The one or more position of the second unit
may comprise a rack-in position, a rack-out position, and an intermediate position.
[0013] In an aspect, a first corresponding variation, of the one or more
corresponding variations, in the fourth height indicates the intermediate position, a second corresponding variation, of the one or more corresponding variations, in the fourth height indicates the rack-in position.
[0014] In an aspect, the earthing truck may comprise a panel positioned in
front of the second unit, and the panel has a window for observing the corresponding first variation, the corresponding second variation, and the corresponding third variation. The panel may be configured in the earthing truck such that a position of the panel is fixed with respect to the first unit. The vertical member may comprise one or more marker indications corresponding to the one or more corresponding variations that are visible through the window. The vertical member may be movably configured on the first horizontal member using any or combination of a guide way, a guide rail, and wheel.
[0015] Various objects, features, aspects and advantages of the inventive
subject matter will become more apparent from the following detailed description of preferred aspects, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings are included to provide a further
understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary aspects of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0017] In the figures, similar components and/or features may have the
same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that

distinguishes among the similar components. If only the first reference label is
used in the specification, the description is applicable to any one of the similar
components having the same first reference label irrespective of the second
reference label.
[0018] FIG. 1 illustrates a front view of an earthing truck, in accordance
with an aspect of the present disclosure.
[0019] FIG. 2A-B illustrates a side view of the earthing truck when the
second unit is in ON position, in accordance with an aspect of the present
disclosure.
[0020] FIG. 3A-B illustrates a side view of the earthing truck when the
second unit is in OFF position, in accordance with an aspect of the present
disclosure.
[0021] FIG. 4 illustrates an exemplary representation of horizontal
member of position indication arrangement in the earthing truck, in accordance
with an aspect of the present disclosure.
DETAILED DESCRIPTION
[0022] The following is a detailed description of aspects of the disclosure
depicted in the accompanying drawings. The aspects are in such detail as to
clearly communicate the disclosure. However, the amount of detail offered is not
intended to limit the anticipated variations of aspects; on the contrary, the
intention is to cover all modifications, equivalents, and alternatives falling within
the scope of the present disclosure as defined by the appended claims.
[0023] In the following description, numerous specific details are set forth
in order to provide a thorough understanding of aspects of the present invention. It will be apparent to one skilled in the art that aspects of the present invention may be practiced without some of these specific details.
[0024] The present disclosure relates to the field of earthing truck. More
particularly the present disclosure relates to an earthing truck with position indication arrangement.

[0025] The present disclosure elaborates upon an earthing truck adapted to
be configured with a switchgear, the earthing truck includes a first unit, a second unit movably configured, between one or more positions, over the first unit. A position indication arrangement, operatively configured with the first unit and the second unit, and configured to indicate the one or more positions of the second unit over the first unit. The position indication arrangement includes a horizontal member configured over at least a part of a top surface of the first unit, and the horizontal member has a first portion having a first length and a first height, a second portion having a second length and second height, and a third portion having a third length and a third height. A vertical member, movably configured on the first member, and configured with the second unit such that a movement of the second unit, between the one or more positions, cause a movement of the vertical member over the first member. Moving the vertical member over the first portion, the second portion, and the third portion causes corresponding one or more variations a fourth height, with respect to the top surface, of the vertical member. The fourth height indicates each of the one or more positions of the second unit.
[0026] In an embodiment, the first height can be less than the second
height, and the second height can be less than the third height.
[0027] In an embodiment, a first transition between the first portion and
the second portion, and a second transition between the second portion and the third portion can comprise a profile facilitating movement of the vertical member over the horizontal member.
[0028] In an embodiment, the profile can comprise any or combination of
a ramp, and curve.
[0029] In an embodiment, the one or more position of the second unit can
comprise a rack-in position, a rack-out position, and an intermediate position.
[0030] In an embodiment, a first corresponding variation, of the one or
more corresponding variations, in the fourth height indicates the intermediate position, a second corresponding variation, of the one or more corresponding variations, in the fourth height indicates the rack-in position.

[0031] In an embodiment, the earthing truck can comprise a panel
positioned in front of the second unit, and the panel has a window for observing
the corresponding first variation, the corresponding second variation, and the
corresponding third variation.
[0032] In an embodiment, the panel can be configured in the earthing
truck such that a position of the panel is fixed with respect to the first unit.
[0033] In an embodiment, the vertical member can comprise one or more
marker indications corresponding to the one or more corresponding variations that
are visible through the window.
[0034] In an embodiment, the vertical member can be movably configured
on the first horizontal member using any or combination of a guide way, a guide
rail, and wheel.
[0035] FIG. 1 illustrates a front view of an earthing truck, in accordance
with an aspect of the present disclosure.
[0036] FIG. 2A-B illustrates a side view of the earthing truck when the
second unit is in ON position, in accordance with an aspect of the present
disclosure.
[0037] FIG. 3A-B illustrates a side view of the earthing truck when the
second unit is in OFF position, in accordance with an aspect of the present
disclosure.
[0038] FIG. 4 illustrates an exemplary representation of horizontal
member of position indication arrangement in the earthing truck, in accordance
with an aspect of the present disclosure.
[0039] As illustrated, the earthing truck 100 can include a first unit 102, a
second unit 104 that can be movably configured, between one or more positions,
over the first unit 102. The second unit 104 can be adapted to be electrically
coupled with a switchgear, and the first unit 102 can be configured to be earth the
switchgear through the second unit 104. The one or more positions can include a
rack-in position when the second position is electrically configured with the
switchgear, a rack-out position when the second unit 104 is electrically
disconnected from the switchgear, and an intermediate position when the second

unit 204 is in between the rack-in and rack-out position. The second unit can be
racked or slide between the one or more positions over the first unit 102. The
second unit 104 can be racked or slide over the first unit 102 using but without
limiting to any or combination of a wheel 114 arrangement, a guide way
arrangement, and guide rail arrangement. The second unit 104 can be made to
rack-in and racked-out over the first unit 102 using a lead screw assembly.
[0040] In an embodiment, the earthing truck can include a position
indication arrangement that can be operatively configured with the first unit 102 and the second unit 104. The position indication arrangement can be configured to indicate the one or more positions of the second unit 104 over the first unit 102. The position indication arrangement can include a horizontal member 106 that can be configured over at least a part of a top surface of the first unit 102. The horizontal member 106 can be made up of but without limiting to a metal, wood, fiber. The horizontal member can have a first portion 106a having a first length and a first height, a second portion 106b having a second length and second height, and a third portion 106c having a third length and a third height. A transition between the first portion 106a and the second portion 106b can include a first profile "PI", and a transition between the second portion 106b and the third portion 106c can include a second profile "P2". The first profile PI and the second profile P2 can be collectively referred a profile. A shape of the profile can be but not limited to a curve, ramp, and parabolic.
[0041] In an embodiment, the position indication arrangement can include
a vertical member 108 that can be movably configured over the first member 106. The vertical member 108 can be configured with the second unit 104 such that a movement of the second unit 104, between the one or more positions, over the first unit 102 can cause a movement of the vertical member 108 over the first member 102. Moving the vertical member 108 over the first portion 106a, the second portion 106b, and the third portion 106c can correspondingly varies a fourth height, with respect to the top surface of the first unit 102, of the vertical member 108. The fourth height can indicate each of the one or more positions of

the second unit. The first height can be less than the second height, and the second height can be less than the third height.
[0042] In an embodiment, when the vertical member 108 can be moved of
slide over the horizontal member using but with limiting to a wheel 112, a guide way, and a guide rail arrangement. The vertical member can in include a one or more marking indication that can be but not limiting to color codes, characters, and scale. The earthing truck 100 can include a panel positioned in front of the second unit 104, and the panel can include a window for observing the one or more marking indications on the vertical member 108. When the second unit 104 is intended to move between the rack-in and rack-out positions, the vertical member 108 can be configured to be moved over the horizontal member 106. While moving the vertical member 108 across the horizontal member 106, the vertical member 108 is moved over the first portion 106a, the second portion 106b, and the third portion 106c, and there is a corresponding shift (also referred as one or more variations) in a height (also referred as fourth height, herein), with respect to the top surface of the first unit 102, of the vertical member 108 according to the first height "hi", the second height "h2", and the third height "h3" of the horizontal member 106.
[0043] In an embodiment, the one or more marking indications can be
strategically positioned on the vertical member such that when the vertical member is over the first portion 106, a green color flag placed on the vertical member 108 can be visible through the window 110. The green color flag can indicate that the second unit 104 is in rack-out position. When the vertical member moved from the first portion 106a to the second portion 106b through the first profile PI, a first corresponding (equal to h2-hl) height shift or variation can make a yellow color flag placed on the vertical member visible through the window 110. The yellow color flag can be position below the green color flag with a gap that can be equal to a difference between the second height "h2" and the first height "hi". The yellow color flag can indicate that the first unit is in between the rack-in position and the rack-out position.

[0044] In an embodiment, when the second unit 104 is moved from the
second portion 106b to the third portion 106c through the second profile P2, a
second corresponding (equal to h3-h2) height shift or variation can make a red
color flag placed on the vertical member visible through the window 110. The red
color flag can be position below the yellow color flag with a gap that can be equal
to a difference between the third height "h3" and the second height "h2". The red
color flag can indicate that the first unit is at the rack-in position.
[0045] In an embodiment, the vertical member can be movably configured
on the first horizontal member using any or combination of a guide way, a guide rail, and wheel.
[0046] Moreover, in interpreting the specification, all terms should be
interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ....and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[0047] While the foregoing describes various aspects of the invention,
other and further aspects of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described aspects, 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.
ADVANTAGES OF THE INVENTION
[0048] The proposed invention provides an earthing truck with position
indication arrangement.

[0049] The proposed invention provides an earthing truck with position
indication arrangement for indicating rack-in and rack-out position of the earthing truck.
[0050] The proposed invention provides an earthing truck with a cost-
effective position indication arrangement.
[0051] The proposed invention provides an earthing truck with a cost-
effective position indication arrangement that requires less maintenance.

We Claim:

1. An earthing truck (100) adapted to be configured with a switchgear, the
earthing truck (100) comprising:
a first unit (102);
a second unit (104) movably configured, between one or more
positions, over the first unit (102); and
a position indication arrangement, operatively configured with the
first unit (102) and the second unit (104), and configured to indicate the
one or more positions of the second unit (104) over the first unit (102), the
position indication arrangement comprising:
a horizontal member (106) configured over at least a part of a top surface of the first unit (102), and the horizontal member (106) has a first portion (106a) having a first length and a first height, a second portion (106b) having a second length and second height, and a third portion (106c) having a third length and a third height, and
a vertical member (108), movably configured on the first member (106), and configured with the second unit (104) such that a movement of the second unit (104), between the one or more positions, cause a movement of the vertical member (108) over the first member (106), wherein moving the vertical member (108) over the first portion (106a), the second portion (106b), and the third portion (106c) causes corresponding one or more variations a fourth height, with respect to the top surface, of the vertical member (108), and wherein the fourth height indicates each of the one or more positions of the second unit (104).
2. The earthing truck (100) as claimed in claim 1, wherein the first height is
less than the second height, and the second height is less than the third
height.

3. The earthing truck (100) as claimed in claim 1, wherein a first transition between the first portion (106a) and the second portion (106b), and a second transition between the second portion (106b) and the third portion (106c) comprises a profile facilitating movement of the vertical member (108) over the horizontal member (106).
4. The earthing truck (100) as claimed in claim 3, wherein the profile comprises any or combination of a ramp, and curve.
5. The earthing truck (100) as claimed in claim 1, wherein the one or more position of the second unit (104) comprises a rack-in position, a rack-out position, and an intermediate position.
6. The earthing truck (100) as claimed in claim 5, wherein:
a first corresponding variation, of the one or more corresponding variations, in the fourth height of the vertical member (108) indicates the intermediate position,
a second corresponding variation, of the one or more corresponding variations, in the fourth height indicates the rack-in position.
7. The earthing truck (100) as claimed in claim 5, wherein the earthing truck (100) comprises a panel positioned in front of the second unit (104), and the panel has a window (110) for observing the corresponding first variation, the corresponding second variation, and the corresponding third variation.
8. The earthing truck (100) as claimed in claim 7, wherein the panel is configured in the earthing truck (100) such that a position of the panel is fixed with respect to the first unit (102).
9. The earthing truck (102) as claimed in claim 7, wherein the vertical member (108) comprises one or more marker indications corresponding to the one or more corresponding variations, and the one or more marker indications, representing the one or more corresponding variations, on the vertical member (108) are visible through the window (110).

10. The earthing truck (100) as claimed in claim 1, wherein the vertical member (108) is movably configured on the horizontal member (104) using any or combination of a guide way, a guide rail, and wheel (112).