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Dynamic Behaviour Of Multi Stage Planetary Gears

Dynamic Behaviour Of Multi Stage Planetary Gears

Product Details:

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Product Description

Description

The planetary gear is aspecial type of gear drive, in which the multiple planet gears revolve around acentrally arranged sun gear. The planet gears are mounted on a planet carrierand engage positively in an internally toothed ring gear. Torque and power aredistributed among several planet gears. Sun gear, planet carrier and ring gearmay either be driving, driven or fixed. Planetary gears are used in auto-motiveconstruction and shipbuilding, as well as for stationary use in turbines andgeneral mechanical engineering. The unit allows the investigation of thedynamic behaviour of a two-stage planetary gear The trainer consists of twoplanet gear sets, each with three planet gears. The ring gear of the firststage is coupled to the planet carrier of the second stage. By fixingindividual gears, it is possible to configure a total of fourdifferent transmission ratios. The gear is accelerated via a cable drum and avariable set of weights. The set of weights is raised via a crank. A ratchetprevents the weight from accidentally escaping. A clamping roller freewheelenables free further rotation alter the weight has been released. The weight iscaught by a shock absorber. A transparent protective cover prevents accidentalcontact with the rotating parts. To be able to determine the effective torques,the force measurement measures the deflection of bending beams. Inductive speedsensors on all drive gears allow the speeds to be measured. The measured valuesare transmitted directly to a PC via USB. The data acquisition software isincluded. The angular acceleration can be read from the diagrams. Effectivemass moments of inertia  aredetermined by the angular acceleration.

Learning Objectives And Experiments

  1. Determine thetransmission ratio for a locked gear
  2. Measure transmittedforces for a locked gear
  3. Gear acceleration underconstant driving torque
  4. Influence of the transmissionratio
  5. Determine reduced massmoment of inertia
  6. Conversion of potentialenergy into kinetic energy
  7. Determine friction
  8. Determine gear efficiency

Specification

  1. Investigation of thedynamic behaviour of a 2-stage planetary gear
  2. Three planet gears perstage
  3. Four differenttransmission ratios possible
  4. Gear is accelerated viacable drum and variable set of weights
  5. Weight raised by handcrank; ratchet prevents accidental release
  6. Clamping roller freewheelenables free further rotation alter the weight has been released
  7. Shock absorber for weight
  8. Transparent protectivecover
  9. Force measurement ondifferent gear stages via 3 bending bars, display via dial gauges
  10. Inductive speed sensors

Technical Data

  1. 2-stage planetary gear
  2. Module: 2mm
  3. Sun gears: 24-tooth,d-pitch circle: 48mm Planet gears: 24-tooth, d-pitch circle: 48mm Ring gears:72-tooth, d-pitch circle: 144mm Drive
  4. Set of weights: 5...50kg
  5. Max. potential energy:245,3Nm
  6. Load at standstill
  7. Weight forces: 5...70N
  8. Measuring ranges
  9. Speed: 0...2000min-1


ADVANCED TECHNOCRACY INC.

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