LOCK FOR ATTACHING FORMWORK ELEMENTS Russian patent published in 2010 - IPC E04G17/07 

FIELD: construction.

SUBSTANCE: lock for attaching formwork elements includes L-shaped semi-clamps the attachment point of which along transverse channels for arrangement of locking wedge is made in the form of rectangular cavity and extended flat element entering that cavity. Semi-clamps are equipped with cylindrical stops and made with possibility of being moved relative to each other. Locking wedge is freely arranged in transverse channel and equipped with fixing device on narrow end and anvil on wide end, in which flat semi-clamp has rectangular slots equally spaced throughout the length of semi-clamp. Semi-clamp with rectangular cavity has a slot to arrange a wedge having a support platform. Wedge is L-shaped. Thickness of rectangular bending is equal to the size of rectangular slot of flat semi-clamp and length of wedged contact surface is chosen from the condition providing relative movement of semi-clamps relative to each other by the value of pitch of rectangular slots of flat semi-clamp. Contact surface of slot in semi-clamp with rectangular cavity is inclined with the angle equal to the working angle of wedge. Locking wedge has equal thickness throughout its length, and parts of the lock are made with precision casting method.

EFFECT: use of invention will allow optimising loaded condition of the lock, enlarging operating capabilities, simplifying constructions and increasing manufacturability, and reducing the cost of product.

4 cl, 4 dwg