We’ve got some ideas on how to solve the problem of cable fouling. Some of them look like permanent solutions, some are temporary ones that can be used to prevent cable damage until we can assemble a permanent one…
Disclaimer: Dear Engineering Graphics instructors, please do not revoke our good grades. All the drawings below are rough concept sketches that we made during our discussions.
- Rerouting the Clock wire-rope.
The fixed end and the pulley mount of clock driving weight cable can be exchanged to move the clock cable to the left (when viewed from FD2 side). The two points to be exchanged are encircled in the picture below. This will involve a lot of work as the clock will need to stopped and whole driving weight removed.
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Putting a spreader bar/ separator
A spreader/ separator can be designed to prevent fouling/ rubbing of cables. The bar will have to be designed to accommodate gap variance as they unwind.
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Relocating the carillon Pulley on tank
Relocating the carillon pulley on tank instead of clock cable pulley(on tank) is much easier and can be done without Bheems help. The pulley can be moved sideways such that it is still under the narrow rectangular opening on the clock floor through which the cable passes. As long as it is under the opening it will not rub with the wooden flooring of the clock chamber. A new mount for the pulley can be fabricated easily by welding a few plates of 6-8 mm steel together, similar to the ones used for making pulley clamps. Refer to the figures below :
Yellow line- Clock driving cable
Black line – gong and carillon driving cable
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(RJV)- An easier way of achieving the same outcome as above would be to fabricate a single additional plate to replace the straight plate of the existing clamp. The new one can be used for an offset of up to 300mm if you want. Note that this arrangement will apply a torque along the axis of the I-beam. (CCW in this image) Check that the mounts holding this beam to the N-S beam below it are secure.
- A temporary action can be thought about to pull the pulley away from the clock cable. To add a few more s-hooks/one long U-hook to the Tune-barrel pulley, Shift the mounting location to the East on the I-beam to ensure that the cable does not foul with the wooden slot above, and pull the pulley towards the north with another cable attached to the N-S I-beam. I’ve put in a rough sketch below.
