Transmitting power over distance and time - PowerPoint PPT Presentation

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Transmitting power over distance and time

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Electrical power transmission has replaced mechanical power transmission everywhere except very shortest distances. What is worth remembering, however, is that from the 16th century through the industrial revolution to the end of the 19th century mechanical power transmission was the norm – even for long distances. – PowerPoint PPT presentation

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Title: Transmitting power over distance and time


1
Mechanical Power Transmission
2
  • Electrical power transmission has replaced
    mechanical power transmission everywhere except
    very shortest distances. What is worth
    remembering, however, is that from the 16th
    century through the industrial revolution to the
    end of the 19th century mechanical power
    transmission was the norm even for long
    distances.
  • The oldest long-distance power transmission
    technology involved systems of push-rods
    connecting waterwheels to distant mine-drainage
    and brine-well pumps. This technology survived
    into the 21st century in a handful of oilfields
    in the US, transmitting power from a central
    pumping engine to the numerous pump-jacks in the
    oil field.

3
  • Mechanical power may be transmitted directly
    using a solid structure such as a driveshaft
    transmission gears can adjust the amount of
    torque or force vs. speed in much the same way an
    electrical transformer adjusts voltage vs
    current.
  • Hydraulic systems use liquid under pressure to
    transmit power canals and hydroelectric power
    generation facilities harness natural water power
    to lift ships or generate electricity.
  • Pneumatic systems use gases under pressure to
    transmit power compressed air is commonly used
    to operate pneumatic tools in factories and
    repair garages. A pneumatic wrench can be used to
    remove and install automotive tyres far more
    quickly than could be done with standard manual
    hand tools.

4
Importance of pulleys
Importance of pulleys
5
  • Belt performance is enhanced by superior pulley
    performance. High quality pulleys can
    significantly increase belt life.
  • Before installing pulleys, ensure that they are
  • Manufactured according to relevant standards to
    help ensure optimum performance
  • Equipped with taper bushes for quick and
    accurate installation
  • Corrosion resistance

6
Taper Bushes
7
  • Taper bushes provide an economical, easy, and
    efficient method of securing sprocket, pulleys
    and couplings to a wide range of standard metric
    and imperial dimensioned shafts of general
    commercial tolerances and finish. The taper
    surfaces on the bush and mating hub are driven
    together by high tensile screws, causing the
    split bush to be firmly contracted onto the
    shaft. The strong clamping force enables
    transmission of high torque.

8
PIX makes high quality belts, pulleys and bush
9
  • Manufactured from grey cast iron which ensures
    consistently high quality product
  • Pulley and pulley groove specification conforms
    to IS 3142 ISO 4183 standards
  • Precise surface finish ensure proper grip and
    wedging
  • Increased belt life reduces recurring purchase
    cost
  • Accurate and precise grooves to eliminate
    slippage of belts
  • Eliminates the chances of damage to the shaft,
    bearing, motor or machinery during installation
    and removal, as there is no need of hammering the
    pulleys
  • No special tool is required except a hexagonal
    key
  • Saves time in installation and removal of pulleys
  • Highly wear resistant. Statically balanced in
    general
  • Dynamic balancing of larger pulley is done on
    requirement basis

10
Advantages of Taper Lock Bush
  • Ease of installation and removal. Reduces
    time and cost in fitting
  • No need of re-boring, full range of both
    metric and imperial sizes are available
  • Facilitates easy assemble / dissemble from
    pulley and other transmission parts
  • Bushes are machined with standard key-ways
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