October 19 2016 0Comment
manual chain blocks to electric chain hoist

The Journey : Manual Chain Blocks To Electric Chain Hoist

The invention of manual chain blocks dates back to the early 3rd century BC, and is credited to Archimedes, a Greek inventor. He invented a pulley design to haul ships out of the sea. This was done using a special hook and tackle system. Such early inventions of pulleys system led to the development of chain hoist.   After the invention of Manual Chain pulley blocks there were many challenges that need to be accomplished for the development of material handling industry. Some of the roadblocks are discussed below
  • Speed of operation:
    1.  There rose a need of constant speed of operation for the proper tuning of the production cycle. Manual operational speed changed from the operator to operator and sometimes for the same operator also. Some time excess speed was also demanded which was beyond the human ability
    1. Continuous operation: As the world moved toward the globalization, the new market open for every industry and much more production was required to cater this market. For this the machines were made to run continuously for long hours.
    1. Consistency in operation: With the high rate of attrition of operating labor there as a need for the consistent way of operation of chain blocks. Electric Hoist reduced the dependency on humans
    1. More safety was demanded: There was a need of handling heavy weight material even where the conditions were not favorable for humans. High Temperature, acidic temperatures were the most common cases of the non workable environment.
    1. Sequential/autonomous tasks: With the automation coming into role there was need to maintain proper timing between the processes.
  1. Multi dimensional tasks: More and more labor was required to control the different axis of operation of manual arrangement of blocks.
  Even though the above list is not exhaustive it covers the main factors that lead to the invention of Electric Chain hoist. The other type of auto chain hoist is air hoist. <>


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