| 摘要 |
PURPOSE:To eliminate detection errors due to the position of switches to detect loads with high accuracy by providing a second lever for operating the switches in sequence on the other end of a first lever which turns with its one end pivot-supported on a cage-frame and with its middle part contacted with the central part of the underside of a cage-floor. CONSTITUTION:An operating body 11a whose tip contacts the underside of a cage-floor 6 is provided to project above the upper face of the middle part of a first lever 11 which is arranged below the cage-floor 6, pivot-supported on a lower frame 2a at its end, and crosses the lower frame 2a, and a second lever 13 which intersects the first lever at right angles and inclined from the underside of the cage-floor 6, is fixed to the other end of the first lever 11. Long holes are provided on the upper surface of a mounting bed 14 fastened to the lower frame 2a, and switches 9 are installed to these holes at constant height. When the load in a cage-room 7 is increased, the movement of the central part of the cage-floor 6 is transmitted to the operating body 11a, the first lever 11 is put into a turning movement, and the second lever 13 is displaced, and thus the switches 9 are depressed in sequence, the switches 9 which correspond to the load in the cage-room 7 are operated in sequence to generate output. |
