LOCK FOR FORM PANELS CONNECTION Russian patent published in 2005 - IPC

FIELD: building, particularly to connect adjacent frame panels used to erect cast-in-place reinforced concrete structure.

SUBSTANCE: lock has L-shaped stops with chamfers and locking wedge freely installed in transversal channel and provided with fixer connected to narrowed part of the wedge and with anvil formed on widened part thereof. Transversal channel for locking wedge arrangement is formed in both L-shaped stops and shaped as annular segmented groove. Transversal channel is symmetric relative stop chamfers and is located on a circle passing, for instance, through stop chamfer ends in annular segmented grooves of each L-shaped stop. In initial position transversal channels are spaced one relative another along circle and define angles equal to angle of L-shaped stop rotation in-between to provide tightening of adjacent form panels. In closed position transversal channels are aligned one with another. Locking wedge is of arch-shaped cross-section having radius equal to that of annular segmented grooves. Locking wedge is freely arranged in transversal channels of L-shaped stops so that it may cooperate with ends of annular segmented grooves of L-shaped stops during lock closing and may move along transversal channel and rotate relative L-shaped stops from lesser wedge base. Place of L-shaped stops connection along transversal channels for locking wedge installation may be formed as fork and bail. Ends of annular segmented grooves of L-shaped stops in aligned position may have inclination angle equal to that of locking wedge end. Locking wedge may have equal thickness along the full length thereof. Angle of wedge end inclination is equal to 3-5° and is chosen to provide self-braking thereof.

EFFECT: reduced loads applied to wedge connection, increased reliability of panel connection and increased operational convenience.

4 cl, 4 dwg