CLAMSHELL Russian patent published in 2006 - IPC B66C3/04 

FIELD: mechanical engineering; material handling equipment.

SUBSTANCE: invention relates to clamshell mechanisms designed for loading and unloading operations. Proposed clamshell has scoop closing and opening mechanism arranged on upper crossmember, and scoops installed for turning in vertical plane. Upper part of scoops is connected with lower crossmember by means of guides installed radially on lower cross-member. Base arranged under lower crossmember is rigidly coupled with upper crossmember by means of lead screw. Scoops are installed on axles secured on base. Clamshell is furnished with vertical posts secured on upper crossmember and base.

EFFECT: improved reliability and simplified design, reduced overall dimensions and weight of clamshell and cost of production.

3 cl, 2 dwg