Review on Active Electro-hydraulic Thruster Brake for Application of Lifting Machine

Abstract

-Thruster brake is device to retard the speed of moving machinery and stop it accurately to desire position. The braking force is applied to brake shoe by pre-stressed compression spring.The convectional thruster brake employs either an electromechanical thruster or passive hydraulic thruster. The electro mechanical thruster utilize electro mechanical solenoid to apply braking force, where as hydraulic thruster brake is applied a force via thruster that is operated by hydraulic force. The value of hydraulic force is fixed irrespective of load to under braking force or over braking force leading to slip the load i.e. improve load positioning or over force braking leading to excessive and un-necessary brake wear.