MECHANICAL DRIVES
MECHANICAL DRIVES
MECHANICAL
DRIVES ARE USED TO PROVIDE A VARIABLE OUTPUT SPEED FROM A CONSTANT SPEED POWER
SOURCE OR TO PROVIDE TORQUE INCREASE FOR A VARIABLE SPEED POWER SOURCE AS IN AN
AUTOMOBILE.
PEOPLE
OFTEN LOOKED FOR CONSTANT TECHNOLOGICAL ADVANCEMENT TO GAUGE THE PROGRESSION OF
A PIECE OF EQUIPMENT. ONE NOTEWORTHY EVOLUTION IN THE LAST 50 YEARS IS OF
MECHANICAL DRIVE. TRENCHERS USED TO PUT STUFFS IN THE GROUND GRADUALLY SHIFTED
OVER THE LAST SEVERAL YEARS TO MECHANICAL DRIVE. MECHANICAL DRIVES USED
GEARBOXES, SHAFTS, PULLEYS, CHAINS AND SPROCKETS TO DRIVE THE TRENCHER CHAIN.
ADVANTAGES
AND DISADVANTAGES OF MECHANICAL DRIVES:
MECHANICAL
DRIVES ARE LESS COSTLY THAN COMPETING ELECTRICAL DRIVES AND THEIR CONTROL IS
MUCH SIMPLER. THEY ARE USED IN INDUSTRIES RANGING FROM AEROSPACE TO MINING AND
HEAVY INDUSTRY. WITH THE ADVANCED TECHNOLOGY, THE WORKING OF MECHANICAL DRIVE
HAS BECOME MORE EFFICIENT. THE DISADVANTAGE OF THESE DRIVES IS THAT THEY ARE
NOT DURABLE AND CANNOT BE CONTROLLED AS PRECISELY AS ELECTRICAL DRIVES. THEY
CANNOT TRANSMIT AS MUCH POWER AS ELECTRICAL DRIVES WHEN VARIABLE SPEED IS
ESSENTIAL
TYPES OF MECHANICAL DRIVES
THE BASIC
TYPES OF MECHANICAL DRIVES ARE:
- GEARED TRANSMISSION - PROVIDES SPECIFIC FIXED TYPE RATIOS.
- BELT DRIVES - PROVIDE FLEXIBILITY IN THE POSITIONING OF THE MOTOR.
- CHAIN DRIVES - PROVIDE INFINITELY VARIABLE SPEEDS.
- TRACTION DRIVES - PROVIDES ADJUSTABLE SPEED WITH RELATIVELY HIGH SPEED.
FEATURES OF MECHANICAL DRIVES:
SPECIFIC
CHARACTERISTICS ARE CONSIDERED WHILE DESIGNING MECHANICAL DRIVES SUCH AS
FOLLOWS:
- LOW - STRESS
- UNIVERSAL MOUNTING
- HIGH STRENGTH MONOBLAC CASINGS
- HIGH ENERGY EFFICIENCY
- LOW NOISE LEVEL
THE
MONOBLAC DESIGN HAS INCREASED CENTER DISTANCES BETWEEN THE OUTPUT SHAFT
BEARINGS, MAKING THE UNIT ABLE TO WITHSTAND SIGNIFICANTLY HIGHER RADIAL
LOADING.
MAINTENANCE OF MECHANICAL DRIVES
MECHANICAL
DRIVES HAVE INTERNAL SPACES THAT HAVE VOID SPACES WHERE RESIDUES CAN BE
DEPOSITED. THE SYSTEM SHOULD BE CLEANED AT REGULAR INTERVALS. CLEAN-IN PLACE
(CIP) IS A METHOD DESIGNED AUTOMATICALLY TO CLEAN PIPES AND DRIVES. THIS METHOD
IS USED TO CLEAN THE VOID SPACES IN THE DRIVES.
STEPLESS DRIVES:
AN
AUTOMATIC STEPLESS TRANSMISSION INCLUDES A DRIVING SHAFT, A DRIVING DISK
ROTATABLE BY THE DRIVING SHAFT, AND A CLUTCH ASSEMBLY ROTATABLE BY THE DRIVING
DISK. TWO PARALLEL GUIDING SLOTS ARE PROVIDED ON THE DRIVING SHAFT. AN
ECCENTRIC PLATE WITH A NOTCH IS SLEEVED ONTO THE DRIVING SHAFT. A COMPRESSIBLE
RESILIENT REGULATION MECHANISM IS DISPOSED BETWEEN THE NOTCH AND THE DRIVING
SHAFT. THE DRIVING DISK IS INSTALLED ON THE ECCENTRIC PLATE VIA A BEARING. THE
ECCENTRIC PLATE OFFSETS IN RELATION TO THE AXIS OF THE DRIVING SHAFT, AND AT
THE SAME TIME THE ECCENTRIC PLATE DRIVES THE DRIVING DISK OFFSET. THE AUTOMATIC
STEPLESS TRANSMISSION CAN COMPRESS OR RELEASE THE RESILIENT REGULATION
MECHANISM ACCORDING TO LOADS. THE ECCENTRICITY BETWEEN THE ECCENTRIC PLATE AND
THE DRIVING SHAFT CAN THEREFORE BE ADJUSTED, AND THE ECCENTRIC PLATE CAN DRIVE
THE DRIVING DISK TO MOVE. THUS, THE ECCENTRICITY OF THE DRIVING DISK CAN BE
REGULATED WITHOUT MANUAL WORK. THE TRANSMISSION HAS A SIMPLE STRUCTURE AND CAN
BE OPERATED EASILY. IT CAN ADJUST THE TRANSMISSION RATIO AUTOMATICALLY.
THEREFORE THE COST AND THE FAILURE RATE CAN BE REDUCED EFFICIENTLY.
CLAIMS:
AN
AUTOMATIC STEPLESS TRANSMISSION COMPRISING:A DRIVE SHAFT, A DRIVE DISK DRIVEN
BY THE DRIVE SHAFT, A CLUTCH WHEEL ASSEMBLY DRIVEN BY THE DRIVE DISK, AN OUTER
SURFACE OF THE DRIVE SHAFT BEING PROVIDED WITH TWO PARALLEL GUIDE SLOTS, THE
DRIVE SHAFT BEING RECEIVED IN A NOTCH OF AN ECCENTRIC PLATE AT THE POSITION OF
THE GUIDE SLOTS, THE NOTCH OF THE ECCENTRIC PLATE DEFINING PARALLEL SEGMENTS ABUTTING
AGAINST THE GUIDE SLOTS AND ALLOWING THE ECCENTRIC PLATE TO MOVE ONLY PARALLEL
TO THE GUIDE SLOTS, A COMPRESSIBLE RESILIENT REGULATION MECHANISM DISPOSED
BETWEEN AN INNER SIDE OF THE ECCENTRIC PLATE AND AN OUTER SURFACE OF THE DRIVE
SHAFT, THE DRIVE DISK BEING MOUNTED ON THE ECCENTRIC PLATE THROUGH A BEARING,
WHEREBY THE ECCENTRIC PLATE CARRIES OUT ECCENTRIC MOTION VERTICALLY TOWARDS THE
AXIS OF THE DRIVE SHAFT UNDER THE REGULATION OF THE RESILIENT REGULATION
MECHANISM, AND DRIVES THE DRIVE DISK TO CARRY OUT CORRESPONDING ECCENTRIC
MOTION.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 1, WHEREIN THE NOTCH OF THE
ECCENTRIC PLATE FURTHER DEFINES AN ARC SEGMENT EXTENDING BETWEEN THE ENDS OF
THE PARALLEL SEGMENTS FOR MATING WITH THE OUTER SURFACE OF THE DRIVE SHAFT.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 1, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A SPRING OR RUBBER DISPOSED BETWEEN AN
INNER SIDE OF THE ECCENTRIC PLATE AND AN OUTER SURFACE OF THE DRIVE SHAFT.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 3, WHEREIN THE INNER SIDE
OF THE ECCENTRIC PLATE IS PROVIDED WITH A FIRST RECESS, THE DRIVE SHAFT IS
PROVIDED WITH A SECOND RECESS OPPOSITELY FACING THE FIRST RECESS, AND THE
SPRING OR RUBBER IS RECEIVED IN THE FIRST AND SECOND RECESSES.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 1, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A CHAMBER PROVIDED ON THE DRIVE SHAFT,
AND A PISTON CONNECTED TO THE ECCENTRIC PLATE, AND THE CHAMBER IS FILLED WITH
GAS OR LIQUID UNDER A PREDETERMINED PRESSURE.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 1, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A CHAMBER PROVIDED ON THE ECCENTRIC
PLATE, AND A PISTON CONNECTED TO THE DRIVE SHAFT, AND THE CHAMBER IS FILLED
WITH GAS OR LIQUID UNDER A PREDETERMINED PRESSURE.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 1, WHEREIN THE MAXIMUM
ECCENTRICITY OF THE DRIVE DISK IS HALF THE DIFFERENCE OF THE INNER DIAMETER OF
THE BEARING AND THE DIAMETER OF THE DRIVE SHAFT.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 7, WHEREIN THE MINIMUM
ECCENTRICITY OF THE DRIVE DISK IS THE THICKNESS OF THE ECCENTRIC PLATE AT A
CENTRAL LINE PARALLEL TO THE GUIDE SLOTS.
AN
AUTOMATIC STEPLESS TRANSMISSION COMPRISING:A DRIVE SHAFT HAVING TWO PARALLEL
GUIDE SLOTS;AN ECCENTRIC PLATE HAVING A NOTCH DEFINING TWO PARALLEL SEGMENTS
SLIDABLY ENGAGED WITH THE TWO GUIDE SLOTS; ANDA COMPRESSIBLE RESILIENT
REGULATION MECHANISM BEING DISPOSED BETWEEN THE DRIVE SHAFT AND THE ECCENTRIC
PLATE;WHEREIN THE ECCENTRIC PLATE IS ADAPTED TO CARRY OUT ECCENTRIC MOTION
BETWEEN A MINIMUM ECCENTRIC POSITION AND A MAXIMUM ECCENTRIC POSITION IN
RESPONSE TO A LOAD ACTING ON THE RESILIENT REGULATION MECHANISM, THEREBY TRANSMITTING
THE ECCENTRIC MOTION TO A DRIVE DISK MOUNTED ON THE ECCENTRIC PLATE THROUGH A
BEARING.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE ECCENTRIC
PLATE HAS AN ARC SEGMENT EXTENDING BETWEEN THE ENDS OF THE TWO PARALLEL SEGMENTS,
AND IS ADAPTED TO MATE WITH AND ABUT AGAINST AN OUTER SURFACE OF THE DRIVE
SHAFT.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A SPRING.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A RUBBER.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A SPRING PLATE.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN ONE END OF THE
RESILIENT REGULATION MECHANISM IS RECEIVED IN A FIRST RECESS PROVIDED ON THE
DRIVE SHAFT, AND THE OTHER END OF THE RESILIENT REGULATION MECHANISM IS
RECEIVED IN A SECOND RECESS PROVIDED ON THE ECCENTRIC PLATE OPPOSITELY FACING
THE FIRST RECESS.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A CHAMBER PROVIDED ON THE DRIVE SHAFT,
AND A PISTON CONNECTED TO THE ECCENTRIC PLATE, AND THE PISTON IS SLIDABLE
WITHIN THE CHAMBER WHICH IS FILLED WITH GAS OR LIQUID UNDER A PREDETERMINED
PRESSURE.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE RESILIENT
REGULATION MECHANISM IS IN THE FORM OF A CHAMBER PROVIDED ON THE ECCENTRIC
PLATE, AND A PISTON CONNECTED TO THE DRIVE SHAFT, AND THE PISTON IS SLIDABLE
WITHIN THE CHAMBER WHICH IS FILLED WITH GAS OR LIQUID UNDER A PREDETERMINED
PRESSURE.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE ECCENTRIC
PLATE IS GENERALLY C-SHAPED.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE MAXIMUM
ECCENTRICITY OF THE DRIVE DISK IS HALF THE DIFFERENCE OF THE INNER DIAMETER OF
THE BEARING AND THE DIAMETER OF THE DRIVE SHAFT.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, WHEREIN THE MINIMUM
ECCENTRICITY OF THE DRIVE DISK IS THE THICKNESS OF THE ECCENTRIC PLATE AT A
CENTER LINE PARALLEL TO THE GUIDE SLOTS.
THE
AUTOMATIC STEPLESS TRANSMISSION AS CLAIMED IN CLAIM 9, FURTHER COMPRISING A
CLUTCH WHEEL ASSEMBLY DRIVEN BY THE DRIVE DISK.
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