FIELD: transport, pipes.
SUBSTANCE: collapsible mechanism incorporates a split bushing, a yoke, yoke rollers and a damper. The said split bushing features a rigid hook joint of the bushing half-rings. The bushing upper part has a rectangular recess to receive the yoke roller, its lower part being furnished with a spearhead-like tenon-slot. In dismantling, the pipe is fed into the joint with its seating cup ahead. With the con-rod moving forward, the carriage, linked via a chain gearing to the said con-rod, moves back to act on the aforesaid split bushing forcing it into the steel clamping ring arranged inside the funnel for it to be expanded thus allowing pipe to be withdrawn.
EFFECT: expanded performances.
5 dwg
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