FIELD OF INVENTION
This invention relates to an equipment for automatic application of grease in a
torsion beam. The application of grease is carried out pneumatically.
BACKGROUND/PRIOR ART OF THE INVENTION
Application of grease in a beam of rear axle is conventionally known to have
been provided (fig. l), which comprises of the following steps:-
- Placing beam in the fixture holdings.
- Applying grease in the target area at two locations (side "A") by pressing
the nozzle of "grease can" for a fixed time.
- Reversing beam followed by application of grease on side "B" in similar
way for a fixed time on the two location, thereby greasing total four
locations.
! i oivevc:r, it is associated with the following disadvantages:-
I. Time variation in grease application process. Fig. 2 shows sample of
time variation recorded in manual grease spray process.
Due to manual operation process, consistency in spray time is not
achieved and desired quantity of grease is not delivered.
11. Due to variation in grease spray, number of beams produced from single
"Grease can" has variations. Due to this there is no clear cut off for
"Grease can" change frequency.
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\omr, rrference may be made to the following known arts:- . f - .-.*?_" ;$> - .. * -
CM 202542829U:- The utility model discloses an oil gun with a gun releasing
protection function. The oil gun comprises a gun head, and is characterized by
comprising a photoelectric sensor, a trigger base, a trigger rod, a cutting sleeve,
a quick connector, an oil pipe, an oil pipe screwed joint, a long sleeve, a short
sleeve and a plastic joint, wherein the cutting sleeve is connected with the
trigger rod; the gun head, the long sleeve, the short sleeve and the plastic joint
are connected into a whole in sequence; the trigger base, the trigger rod and
the cutting sleeve are arranged on the gun head; the photoelectric sensor is
arranged between the cutting sleeve and the trigger base; and the oil gun is
ronnccted with a PLC (Programmable Logic Controller) through a circuit. In the
oil gun, the photoelectric device is arranged on the oil gun, and the PLC which
1s connected with the oil gun is arranged, so that a filling process can be
controlled to be stopped immediately during gun releasing, and accidents
caused by splashing of high-pressure oil are prevented; and moreover, the oil
gun is simple in structure, is connected reliably, and is safe and convenient for
using.
~S20030062380Al:A- system for delivering a preset volume of fluid, such as
oil, includes a master control station and one or more metering device
communicatively linked through a wireless communications network. The
mastcr control station provides command signals to enable dispensing of a
fluid from the metering device and provides a preset amount of fluid to be
dispensed. The metering device is manually activated by a manually-operated
lever, and is thereafter latched in an open position to dispense lubricant. The
amount of lubricant dispensed is metered until the predetermined amount of
lubricant is dispensed. After the preset amount is dispensed, the metering
device is latched in a closed position, preventing further dispensing until the
metering device is again enabled by the central control station.
US 492_8795A:- A standard grease fitting for the bore of a main shaft is
replaced with an integral lube shaft rotatably supported within the main shaft
bore with bearing assemblies. Snap rings hold two sealed bearings, spaced by a
spacer element, against a stepped shoulder of the lube shaft, and axially
position the lube shaft within the main shaft bore. Seals on the inboard side of
the innermost bearing assembly prevent grease from escaping about the
outside of the lube shaft. The rotatably mounted lube shaft permits lubrication
of the main shaft even as it rotates. Grease may be manually applied, or
remotely applied with a grease gun having a controlled, mechanized actuator.
i;'lcxiblc tubing interconnects the grease gun output with the lube shaft so that
even readily inaccessible devices may be relatively remotely lubricated, even
during their operation. An automatic timer, or other presetable control circuit
may be used to automatically actuate the grease gun at timed intervals, or
responsive to some other condition such as energization of the device to be
lubricated. A sealable housing protects the automatic control circuitry, grease
gun, and corresponding actuating mechanisms.
OBJECTS OF THE INVENTION
'I'he primary object of the present invention is to provide an equipment for
atltomatic application of grease in a torsion beam which overcomes
disadvantages associated with the prior art.
Another object of the present invention is to provide an equipment for
automatic application of grease in a torsion beam which is efficient and reliable
Further object of the present invention is to provide an equipment for
a~itomatica pplication of grease in a torsion beam which improves application
:,f grcasc spray with control on grease utilization for desired number of beams.
WMMARY OF THE INVENTION
According to this invention, there is provided an equipment for automatic
application of grease in a torsion beam comprising of a grease holder with a
switch for spraying grease on the beam for a fixed duration of time by means of
a pneumatic cylinder.
BIQIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
IJurther objects and advantages of this invention will be more apparent from
the ensuing description when read in conjunction with the accompanying
drawings and wherein:
Fig. 1 shows:: application of grease in a beam of rear axle according to prior
art.
Fig. 2 shows: time variation plot between spray duration (T) and no. of spray
(N) during manual grease application.
!Gg. 3 shows: schematic of an equipment for automatic application of grease in
2 torsion beam according to the present invention.
Fig. 4 shows: application of grease on different locations of the torsion beam.
3ETAIL DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE
ACCOMPANYING DRAWINGS:-
'fhe present invention discloses an equipment for automatic application of
grease in a torsion beam. Now, reference may be made to fig. 3, wherein the
equipment comprising of a grease can holder (2) for holding a grease can (1).
'I'here is provision of a pneumatic cylinder (4) on the top of said grease can (1).
Further, a switch with push button (3) is provided to engage pneumatic circuit
(7) with the help of pneumatic pipe (6).
,?\I
i nus. t4ie present invention comprising of a grease holder with a switch for
spraying grease on the beam for a fixed duration of time by means of a
pncuma tic cylinder.
When the beam is placed in the fixture, "On" switch on the grease holder is
switched on. Pneumatic circuit engages and grease is sprayed for fixed
duration of for ex. 5 sec (as required). Spray automatically stops after 5 sec
through pneumatic supply cut, controlled by PLC.
Spray duration is constant for each shot and intended weight of grease is
delivered per beam.
j'zrthcr, there is provision of a counter in which required beam quantity is set,
~ogcthcrw ith a buzzer which rings once the beam count signal is equal to the
sct value. Operator discards the "Grease can" once the buzzer rings after
greasing required number of beams as set in the counter. Auto reset option is
also provided to restart count.
Once the switch with push button (3) is pressed, timer with preset time
functions and engages using timer cable arrangement (5) connected to PLC
circuit (7). When the timer (7.ii) runs, increment is recorded in counter (7.i) and
count is displayed in the indicator (7.iii). The grease application takes place for
spc:cificd time through the nozzle of a grease can (1) when timer starts. This
i:pcration is repeated 3 more times, thus total on four locations (1-4) of a single
torsion beam grease is applied as shown in fig. 4.
Referring fig. 3 wherein an indicator is activated after counting "4" counts by
counter (not shown in fig. 3) indicating that the component is ready for further
operation. Thereafter torsion beam is replaced with new beam for grease
application. After 4 counts counter is reset by signaling to PLC. Second counter
is also provided, which functions in parallel with the first counter to count
number of times grease sprayed. Number of counts is displayed in the indicator
('/.iii). After desired counts, when grease is emptied in the can, buzzer (8) gets
ir~ggcrcd for changing grease bottle. Timer is reset automatically for further
cycle.
With the help of the present invention optimum grease consumption is
achieved.
It is to be noted that the present invention is susceptible to modifications,
adaptations and changes by those skilled in the art. Such variant embodiments
employing the concepts and features of this invention are intended to be within
the scope of the present invention, which is further set forth under the
following claims:-

WE CLAIM:
1. An equipment for automatic application of grease in a torsion beam
comprising of a grease holder with a switch for spraying grease on the
beam for a fixed duration of time by means of a pneumatic cylinder.
2. An equipment as claimed in claim 1, wherein the pneumatic cylinder is
positioned on the top of said grease can holder.
3. An equipment as claimed in claim 1 or 2, wherein the switch with push
button is provided to engage pneumatic circuit by means of pneumatic
P'Pe.
4. An equipment as claimed in any of the preceding claims, wherein upon
pressing the switch with push button, timer with preset time functions
and engages using timer cable connected to the PLC circuit.
5. An equipment as claimed in any of the preceding claims, wherein
increment is recorded in counter and count is displayed in the indicator
when the timer starts.
6. An equipment as claimed in any of the preceding claims, wherein
another counter is provided to count number of times of grease
application.
7. An .equipment as claimed in any of the preceding claims, wherein a
buzzer is provided, which gets triggered for changing grease bottle when
the grease can is empty.
8. An equipment for automatic application of grease in a torsion beam
substantially as herein described with reference to the accompanying
drawings.