HOOK SUSPENSION Russian patent published in 2020 - IPC B66C1/34 

FIELD: machine building.

SUBSTANCE: invention relates to hoisting-and-conveying equipment and can be used on hoisting cranes and cross-arms. Hook suspension comprises hook (1), cross-arm (2), fastening element for attachment of hook (1) on cross-arm (2) and thrust bearing (4), locking device in form of cylinder (7), cut into four parts, with internal conical hole, bushing (8) in the form of truncated cone with through cylindrical hole. At that, shank of hook (1) is made stepped. Smaller shank end has threaded end and passes through cylindrical hole of bushing (8) in form of truncated cone, which is fixed by nut (9), coupled by thread with step of shank of smaller diameter.

EFFECT: higher reliability of hook suspension operation and ease of assembly of its elements due to easier installation and fixation of conical sleeve, since in this case it is not necessary to tighten the screw, to search for a threaded hole in the hook shank, and only enough to throw and tighten the nut.

1 cl, 1 dwg