Ackerman Dean C. (Lancaster OH) Smith Don W. (Lancaster OH)
출원인 / 주소
The Babcock & Wilcox Company (New Orleans LA 02)
인용정보
피인용 횟수 :
15인용 특허 :
1
초록▼
An accessory transmission conversion mechanism of the type disclosed in the U.S. Pat. No. 4,177,539, to Elting, for causing the lance tube of a long retracting soot blower to oscillate about its longitudinal axis, is provided with a lost motion driving connection between the yoke driving gear and th
An accessory transmission conversion mechanism of the type disclosed in the U.S. Pat. No. 4,177,539, to Elting, for causing the lance tube of a long retracting soot blower to oscillate about its longitudinal axis, is provided with a lost motion driving connection between the yoke driving gear and the crank of the Scotch yoke which generates the oscillating motion. A holding portion on the gear permits locking out such lost motion when desired. When lost motion is present, the blowing path is automatically changed when the blower reverses. When locked out, the blowing pattern is changed so that the jet traces the same path in each direction of movement.
대표청구항▼
In a long travel soot blower or the like having a supporting beam, a carriage adapted to travel along the beam and including a housing forming an enclosure for the carriage, a lance secured to the carriage to travel therewith but rotatable about its longitudinal axis, longitudinal rack means carried
In a long travel soot blower or the like having a supporting beam, a carriage adapted to travel along the beam and including a housing forming an enclosure for the carriage, a lance secured to the carriage to travel therewith but rotatable about its longitudinal axis, longitudinal rack means carried by the beam, a motor operatively interconnected with the carriage, walking pinion means carried by the carriage and rotatable to drive the carriage and lance along the beam, transmission means for rotating the walking pinion means and for oscillating the lance about its longitudinal axis including a pair of interfitted independently rotatable shafts journaled in but projecting at their outer ends outside said housing of the carriage, the radially outer of said shafts being drivable by the motor and having gear means thereon within the carriage housing for driving said walking pinion means to actuate the carriage along the beam, a yoke driving gear on the projecting outer end of said radially outer shaft, the outer end of the radially inner shaft extending beyond the outer end of the radially outer shaft, an inner end of said radially inner shaft having a rotary driving connection to the lance within the carriage housing, a yoke driven gear on the outer end of the radially inner shaft, an accessory housing secured to the outside of the carriage housing and enclosing said two last-mentioned gears, a Scotch yoke in said accessory housing for oscillating the yoke driven gear and the radially inner shaft to oscillate the lance about its longitudinal axis during longitudinal travel thereof, and means for actuating the yoke comprising a crank, characterized by a lost motion driving connection between the yoke driving gear and the crank, whereby the yoke driven gear is continuously oscillated while the yoke driving gear is rotating in one direction, but oscillation of the driven gear is interrupted when the direction of rotation of the yoke driving gear is reversed, and recommences at a different longitudinal position of the lance after the lost motion is taken up during reversed rotation of the yoke driving gear.
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이 특허에 인용된 특허 (1)
Elting Larry M. (712 Madison Ave. Lancaster OH 43130), Oscillating soot blower mechanism.
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