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 CAM ASSEMBLY FOR PAYLOAD MANAGEMENT
APPLICANT:
TUSKER MATERIALS HANDLING PRIVATE LIMITED
EL 39/2, MIDC BHOSARI PUNE
MAHARASHTRA INDIA 411026
The following specification particularly describes the invention and the manner in which
it is to be performed.
TECHNICAL FIELD
[001] The present disclosure generally relates to a cam assembly for payload
management, and more particularly to the payload consisting of bulk materials
consisting of relatively lengthy limbs.
BACKGROUND
[002] Over a period of time, with emergence of an Industrial Revolution,
industries around the world had experienced pragmatic and positive development
in an arena of industrial economy. Subsequently, the payload handling has
always been neglected area in this domain due to lack of sophistication or budget
constraints. This has resulted in poor material management, ensured material
handling during transit phase of the material till the end consumer.
[003] It was observed that some sophisticated industries are using lifting
arrangements for payload handling. Now days, technology in this domain is still
lacking behind to offer best flexible solution for odd shaped or bulky payloads
consisting of long limbs protruding out from main body can be easily shifted and
placed at desired location with ease and sophistication without compromising
quality and lateral damages.
[004] Lifting arrangement for payload handling for lengthy limbed materials
was conventionally handled by lengthy linkage system. Historically, series of
four bar chain or suitable linkage with jack for elevation were used for lifting.
Such an arrangement was part of the self-propelled battery-operated vehicle.
Alignment for the series of linkage system in fabricated body is very difficult and
time consuming and also creates problems for replacement for bearing parts in
the linkage system. The payload rests on the high-pressure hydraulic ram which
makes it unsafe from an operator as well as payload perspective.
[005] However, safety of the operator, the payloads and sometimes the lifting
mechanism itself plays a vital role. However, safety of the operators is also given
secondary priority. As mandated under Indian laws, the safety of the operator is
mandatory under The Factories Act, 1948 of India. Even after so many
legislation and restrictions for the safety at the shop floor, accidents are
inevitable. Analysis in this regard elucidate that main cause behind the failure of
payload mechanism and accidents thereafter may be faulty linkage system design,
miscalculation of the load analysis or over-loading of the lifting mechanism,
malfunction in the linkage system, recklessness and carelessness of the operator
while working with the linkage system and many more.
[006] There have been attempts made in the past to solve problems related to
the payload management. However, these attempts are mainly focused on
avoiding damages to limbs of the payload or components of the linkage system
against a crash or the accidents only after the crash or the accident occur. The
past attempts are not sufficient to avoid or minimize the damages before actual
occurrence, to the limbs of the payload or the components of the linkage system
and most importantly the operator.
SUMMARY
[007] This summary is provided to introduce aspects related to a cam assembly
(100) for payload management, in accordance with an embodiment of the present
subject matter are further described below in the detailed description. This
summary is not intended to identify essential features of the claimed subject
matter nor is it intended for use in determining or limiting the scope of the
claimed subject matter.
[008] In one embodiment, the cam assembly consisting of plurality of linear
cams (101) with plurality of vertical guide arrangements may be placed for
lifting evenly distributed payload. The system pressure of the said cam assembly
(100) may be maintained at very low as the degree of the payload and the
payload rests on a horizontal platform (103) which provides more stability to the
payload during lifting and transportation.
BRIEF DESCRIPTION OF THE DRAWINGS
[009] The foregoing summary, as well as the following detailed description of
preferred embodiment, is better understood when read in conjunction with the
appended drawings. However, the invention is not limited to the specific
components of apparatus and methods disclosed in the drawings.
[0010] Figure 1 illustrates a cam assembly (100) for payload management.
(hereinafter referred to as “the cam assembly”), in according to an embodiment
of the present subject matter.
[0011] Figure 2 illustrates side view of the cam assembly (100) for payload
management showing a plurality of cams (101) and a platform (103) positioned
over the cams and carrying the payload as shown in hashed box.
[0012] Figure 3(a) illustrates details of one of the cams out of plurality of cams
(101), position of the platform (103) resting over the cam through a plurality of
rollers (105) and a series of mini rollers (104) attached to the plurality of cams
(101).
[0013] Figure 3(b) illustrates details of the series of mini rollers (104).
[0014] Figure 4 illustrates details of the cam assembly (100), wherein the rollers
attached beneath the horizontal platform (103) are shown at elevated position.
[0015] Figure 5 illustrates details of vertical guide for rollers attached beneath
the horizontal platform (103) of the cam assembly (100) to move vertically up
and down.
DETAILED DESCRIPTION
[0016] The invention will now be described with respect to various embodiment.
The following description provides specific details for understanding of and enabling
description for, these embodiment of the invention. The words "comprising," "having,"
"containing," and "including," 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.
[0017] The present disclosure provides a cam assembly (100) for payload
management. The cam assembly (100) for payload management (hereinafter referred to
as “the cam assembly”) comprises of various components such as a plurality of cams
(101), a plurality of mini rollers (104), a platform (103), a plurality of rollers (105), a
traction motor (102) etc. integrated together to form the cam assembly (100). According
to one embodiment of the present disclosure, the plurality of cams (101) may be a linear
cam gradually slanting downwards from left to right side of the cam of the plurality of
the cams (101) to obtain vertically upwards movement of the platform (103) during
lifting the cam assembly (100).
[0018] The cam assembly (100) may be incorporated for vertically upward lift
the payload (as shown in hashed box in figure 1) place over the platform (103). Smooth
and easy lifting of the payload may be achieved using the said cam assembly (100) as
the system pressure of the cam assembly (100) is kept at very low degree to obtain
optimal stability of the payload resting over the platform (103). Thereby the protection
of the operator of the cam assembly (100) and ultimately the payload may be achieved in
terms of accidents or crash.
[0019] In one embodiment, the cam assembly (100) may be operated using the
traction motor (102) attached at one of the ends of the cam assembly (100). As shown in
the fig. 1, the traction motor (102) may be mechanically coupled to the plurality of cams
(101) through a connecting shaft. Precise horizontal back and front displacement of the
plurality of cams (101) may be ascertained using the traction motor (102). Additionally,
the plurality of the cams (101) may be arranged in the series sequence to form a train of
cams (101) place one after the other as shown in detail in the fig. 1. The plurality of
cams (101) may further be moved over a plurality of rollers (104) attached to each of the
cams of the plurality of the cams (101). Thereby achieving the desired horizontal back
and front displacement of the plurality of cams (101) using the traction motor (102).
[0020] Figure 1 further illustrates the platform (103) placed over the plurality of
cams (101) through a plurality of rollers (105). Moreover, one edge of the cam (101)
may be kept slanted to facilitate the plurality of rollers (105) coupled to the platform
(103) to move over the slanting face of the cam to achieve vertically upward movement
of the platform (103) when plurality of cams (101) move horizontally back and front.
Additionally, the platform (103) may be coupled to the plurality of rollers (105), wherein
the plurality of rollers (105) may be guided through a vertical guide to ensure only one
freedom of axis i.e. vertical upward and downward movement of the plurality of rollers
(105) thereby ultimately causing vertically upward movement of the platform (103) upon
horizontal displacement of the plurality of the cams (101). When the plurality of cams
(101) displaces horizontally, then the plurality of rollers (105) makes their way through
the guide (as shown in figure 5) which ensures slip-less vertical movement of the
horizontal platform (103). Additionally, the slanting edges of the plurality of cams (101)
makes the vertically upward and downward movement of the horizontal platform (103)
easy and with minimal friction.
[0021] Figure 2, illustrates the side view of the cam assembly (100). Figure 2
further illustrates the position of the traction motor (102), connecting rod, plurality of the
cams (101), the platform (103) at lower position, and payload (as in hashed box). As
shown in the figure 2, at the lower position, the plurality of the rollers (105) coupled to
the platform (103) may be positioned at the extreme right side of the cam of the plurality
of cams (101). Further, plurality of mini rollers (104) coupled to the plurality of cams
(101) facilitate smooth horizontal back and front displacement.
[0022] Figure 3(a) illustrates the position of the one of the cams of the plurality
of the cams (101) at the lowered position. Wherein the plurality of the rollers (105)
coupled to the platform (103) may be maintained at the extreme right end of the cam of
the plurality of cams (101). The traction motor (102) may be used to displace the cam of
the plurality of cams (101) horizontally back and front over the plurality of mini rollers
(104) coupled to them as shown the figure 2.
[0023] Further, figure 3(b) illustrates the plurality of mini rollers (104) coupled
to the plurality of the cams (101) facilitating smooth horizontal displacement of the
plurality of cams (101).
[0024] Now referring to Figure 4, which illustrates position of the cam assembly
(100) at elevated or raised position. Upon activation of the horizontal back and front
movement of the plurality of cams (101) using the traction motor (102), the series of
rollers (105) coupled to the platforms (103) may be activated and may be further guided
to move upward and/or downward through the guide created for its movement. This
vertically guided movement of the plurality of rollers (105) through the guide makes
cam to move from right to left and/or left to right. This may seem like as if the plurality
of rollers (105) is moving along the slanted edge of the plurality of cams (101). Up on
reaching the top position, the plurality of rollers (105) may be maintained to secure
stable position of the horizontal platform (103). The vertical traverse may be counted as
maximum vertical lift designed for the cam assembly (100).
[0025] As shown in the figure 5, locking mechanism is described. To achieve
locking of the plurality of rollers (105) coupled to the horizontal platforms (103) at the
raised position, the vertical guide may be provided in the cam assembly (100). When the
plurality of rollers (105) coupled to the platform (103) reaches the extreme left end of
the cams (101), the plurality of rollers (105) may be locked in the vertical guide so to
prevent horizontal movement of the series of rollers (104) and thereby preventing
vertical lowering of the platform (103). Vertical guide so provided ensures controlled
vertically upward and/or downward movement of the plurality of rollers (105).
[0026] In yet another embodiment of the present subject matters, the maximum
vertical elevation achieved may be in proportional to horizontal distance traversed by the
plurality of cams (101) and vertical tapering provided to the plurality of cams (101) all
coupled to the horizontal platform (103).
[0027] Additionally, in another embodiment, the cam (101) may be
manufactured by the cast iron to ensure optimum compressive load bearing capacity of
the plurality of the cams. Optimum compressive load bearing capacity will ensure safety
of the payload and the operator.
[0028] According to several aspects of the present subject matter, the present
subject matter offers few advantages as mentioned below.
[0029] The present subject matter enables easy and controlled horizontal back
and front displacement of the plurality of cams (101) using the traction motor (102).
[0030] The present subject matter enables to lift the payload kept on the
horizontal platform (103) with jerk free and smooth vertical movement.
[0031] The present subject matter enables to lock the horizontal platform (103)
using the guide at raised position to ensure safety of the payload and the operator.
[0032] The present subject matter enables to safeguard payload using cast iron
cam assembly (100) which gives optimum compressive load capacity.
[0033] The present subject matter offers easy movement of the cam assembly
(100) from one place to another.
[0034] The present subject matter offers easy replacement of wear and tear spare
parts of the cam assembly (100) thereby restoring the cam assembly (100) again in
motion in quick time.
[0035] Although implementations for the cam assembly (100) are disclosed, it is
to be understood that the appended claims are not necessarily limited to the specific
features or methods described. Rather, the specific features are disclosed as examples of
implementations for utilization of the cam assembly (100) for payload management.

I/We claim:
1. A cam assembly (100) for the payload management, the cam assembly (100)
comprising:
a plurality of cams (101), wherein the plurality of cams (101) is coupled together
using a mechanical coupling for easy horizontal displacement, and wherein the plurality
of cams (101) comprising a slanted edge over one of its sides;
a traction motor (102), wherein the traction motor (102) is coupled to plurality of
cams (101) through a connecting rod to obtain horizontally back and front displacement;
the connecting rod, wherein the traction motor (102) and the plurality of cams
(101) are connected through the connecting rod;
a horizontal platform (103), wherein the horizontal platform (103) is a flat
horizontal base resting over the plurality of cams (101), and wherein the horizontal
platform (103) is used to place payload;
a plurality of a rollers (105), wherein the plurality of rollers (105) is coupled
beneath the horizontal platform (103);
a plurality of mini roller (104), wherein the plurality of rollers (104) is coupled
beneath the plurality of cams (101);
a vertical guide, wherein the vertical guide is a vertical slot engraved to house
the plurality of roller (104) and further to ensure vertically upward and downward
movement; and
a mechanical coupling, wherein the mechanical coupling is used to couple the
traction motor (102) to the connecting rod, wherein the mechanical coupling used to
connect the connecting rod to the first cam of the plurality of cams (101), wherein the
mechanical coupling is used to connect the plurality of cams (101) together.
2. The plurality of cam (101) as claimed in claim 1, wherein plurality of cams (101)
carries the elevation or the tapering or the slanted edge from left to right edge of the
plurality of cams (101) to facilitate vertical movement of the platform (103).
3. The cam assembly (100) of claim 1, wherein the elevation of the slanted edge
over the plurality of cams (101) is maintained between 35˚ to 45˚ for optimum result.
10
4. The cam assembly (100) of claim 1, wherein the vertical guide is provided to
achieve locking of the horizontal platform (103) at the raised position.
5. The cam assembly (100) of claim 1, wherein the material of the plurality of the
cams (101) is cast iron to achieve optimum compressive load bearing capacity of the
cam assembly (100).