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AMBAR
CHARKHA
INTRODUCTION
INTRODUCTION
- ‘Ambar Charkha’ is a machine for making yarn out of cotton sliver without using any power except that from the human body.
- The existing upgraded Ambar Charkha reduces drudgery because of the leg drive.
- We saw development potential to further reduce drudgery, increase productivity and increase ergonomic features.
PROBLEMS
The main problems which we have focused on, in the current design are :
PROBLEMS
THREAD BREAKAGE
VIBRATIONS & THREAD BREAKAGE
- Major cause of mid-operation breakage of a produced thread.
- The machine is stopped each time a thread breaks. Then restarting the machine requires more force.
- Stopping the machine every time adds to the downtime of the machine , thus reducing productivity.
SPEED CONTROL
SPEED CONTROL
- Not full utilization of leg power
- One cannot change the pedalling rate for same production speed
SOLUTIONS
- Here are some of the solutions in accordance with the previously mentioned problems along with a mechanism to ease the drive even more.
SOLUTIONS
Isolated stoppage of
individual spindles
An individual spindle can be stopped by disengaging the pulley thread by transferring it to the fitted embodiment, which will keep on rotating the pulley thread but won’t rotate the spindle.
Design
BENEFITS
SPINDLE STOPPER
- Thread reattachment while working
Ball bearing
- Reduces the initiating force requirement
Base cap
- Retrofittable
Concave outer cover
Ball bearings
Concave outer cover
DESIGN
Base cap
Mechanism for
increasing the speed
- Introduction of a large size pulley at the bottom, directly powered by the pedal. The pulley will drive a smaller pulley at the top which will rotate at a greater rpm than before
BETTER LEG-DRIVE
DESIGN
BENEFITS
Drive wheel
- Increase operating speed
Drive belt
- Vibration reduction
- Pedaling customization
Stepped Pulleys
DESIGN
Integrated
hand drive
Two ropes will be attached to either side of the leg driven pedal, which will extend above passing through individual pulleys and will come to the front where the user can pull them alternatively, synchronizing with leg power
HAND DRIVE
DESIGN
BENEFITS
- Drive can be complemented by Hand
Pulleys
Ropes
- Legs can be rested in long working hours
DESIGN
COST
First major product
Today
Expanded
Established