Write two field applications of single purchase crab
Answers
The single purchase crab can be used in rugged and in very very steep terrain condition. And single purchase crab is reversibility if it is faulty. And then it can be covered by the warranty on the crab.
These are basically a winch crabs. Winch crabs is a type of the lifting machines in which velocity ratio is increased by a gear system which is included in the system. If only one set of gears is used in the system then the winch crab is called a Single Purchase Winch Crab, and if two sets are used in the system it is called Double Purchase Winch Crab.
In single purchase gear, only a single gear mechanism is introduced to help left the load.
The principal of the machine is that the gear will increase the velocity ratio in a linear direction.
This is why the single purchase winch or crab is used in areas where loads are to be lifted by a greater angle of elevation.
Also, this machine is used to lift the load on rugged surfaces.