Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1998-06-12
1999-08-03
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405272, E02D 500
Patent
active
059316071
ABSTRACT:
The invention concerns a device for lining a trench, hole, tunnel or other excavation, said lining device comprising vertical supports arranged in pairs opposite one another on both sides along the trench, wherein the supports have first guide channels for receiving the lining plates on both of their sides and second guide channels located on the inside of said supports for guiding a bracing frame, wherein said second guide channels define a gap formed by two flanges and have roller tracks on both sides thereof against which are supported rollers of the bracing frame capable of taking up compressive forces; at least one bracing frame disposed between two opposite supports, which bracing frame can be guided in a vertically displaceable manner by means of parts engaging in the second guide channels; and lining plates which can be guided in a vertically displaceable manner in the first guide channels of two adjacent supports; wherein at least one pulley assembly is mounted in the upper region of the bracing frame, wherein said pulley assembly engages the vertical support through said second guide channel, and wherein the pulleys are disposed on horizontal axes inside and outside of said second guide channel. The pulley assembly comprises pairs of rollers on both sides of the pulleys wherein said rollers roll on the inside flanges of the second guide channel and on roller tracks of the vertical support outside of the second guide channel, thereby permitting the bracing frame to be vertically displaceable along the length of the vertical supports.
REFERENCES:
patent: 2908140 (1959-10-01), Everson
patent: 3950952 (1976-04-01), Krings
patent: 4376599 (1983-03-01), Krings
patent: 4657442 (1987-04-01), Krings
patent: 5310289 (1994-05-01), Hess
patent: 5503504 (1996-04-01), Hess et al.
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