초록 ▼

A walking beam (20) is supported on and fixedly coupled to a pair of vertical rods (39) slidably received in bushings (41) mounted on a horizontally-movable carriage (40) held stationary in the absence of overriding force by a friction brake (60) coupled through a lost motion coupling (46, 48, 66) w

A walking beam (20) is supported on and fixedly coupled to a pair of vertical rods (39) slidably received in bushings (41) mounted on a horizontally-movable carriage (40) held stationary in the absence of overriding force by a friction brake (60) coupled through a lost motion coupling (46, 48, 66) with a drive member 32 moved by an actuator 31 to undergo in alternation forward and reverse strokes. The rods (39) are pivotally coupled to the drive member (32) by inclined links (36). The arrangement is adapted to convert each forward and subsequent reverse stroke of the drive member into an up-forward-down-return rectangular movement of the beam (20).

대표청구항 ▼

Walking beam apparatus comprising, a frame, a longitudinally reciprocable carriage mounted by said frame, carriage positioning means for longitudinally positioning said carriage and including for that purpose carriage drive means adapted to undergo alternate longitudinal forward and reverse strokes

Walking beam apparatus comprising, a frame, a longitudinally reciprocable carriage mounted by said frame, carriage positioning means for longitudinally positioning said carriage and including for that purpose carriage drive means adapted to undergo alternate longitudinal forward and reverse strokes and coupled to said carriage by a lost motion coupling, said positioning means being operable such that, during a first interval of each of such strokes, such carriage and drive means are uncoupled while said carriage remains stationary and, during a second interval of each of such strokes, such carriage and drive means are coupled to move longitudinally together, a walking beam, movable beam support means fixedly coupled to said beam and slidably coupled with said carriage so as to render said beam longitudinally movable therewith and laterally movable with respect thereto, guide means on said carriage for constraining lateral movement of such support means and beam to be normal to the longitudinal movement of said carriage, and link means coupled between said drive means and support means and pivotally coupled to each thereof, said link means being responsive to changes in the relative positioning of such carriage and drive means during the first interval of, respectively, each such forward stroke and subsequent reverse stroke to displace said support means to, respectively, a laterally outward position and a laterally inward position, the combined movements of such carriage and support means being adapted to cause said beam to undergo a rectangular movement in the course of each such forward stroke and subsequent reverse stroke.