FIELD: mechanical engineering. SUBSTANCE: device has a truck connected to its drive. A cover closed on both ends by removable covers with locking members is mounted on an axle on the truck. A cover holder is made in the form of a tail spindle with forks for covers and forks for fixing the cover. The holder drive is made in the form of a screw mechanism coaxially to which a pusher is positioned in the tail spindle, the pusher is connected to the screw mechanism nut. The screw mechanism is connected to the tail spindle by a compression spring located on the pusher. A thrust engageable with the screw mechanism drive is mounted on the tail spindle. Fork 34 is made in the form of an unbalanced lever engageable with the pusher. EFFECT: improved structure. 2 cl, 5 dwg
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Authors
Dates
1994-06-15—Published
1992-06-22—Filed