Take-Up Unit

The take-up unit consists of the following main parts:

• A fixed frame with the running guides of the movable frame
• A movable frame with a 180° power only turn c/w roller train
• Two telescopic couplings between the fixed and movable parts which ensure continuity of the track along which the chain trolleys travel during movements of the movable part in relation to the fixed frame
• A set of pulleys to return the ropes connecting the movable part to the counterweights
• A set of cast iron counterweights. The counterweights are appropriately shaped to ensure ease of insertion and to eliminate any possibility of the weights falling off the supporting bar
• A protection cage which represents a further precaution in the case of disengaging of the counterweights and which also functions as a service platform when the number of counterweights must be adjusted
• A limit switch located on the fixed part activated by a cam located on the movable frame; the function of the limit switch is to indicate the maximum allowed stroke.

The two angle positions of the excentric correspond obviously to the two external positions of the oscillating arm and thus to the opening and closing of the stop. The lever arrangement is such that operating on the end of the oscillating arm it is not possible to open or close the block; arm position is a controlled only by a torque motor. All the various parts of the stop are easily replaced without dismantling of the device from the power and free line.