SPRING BALANCER FOR SENSING LOAD CHANGE

摘要

PURPOSE: A spring balancer for sensing load change is provided to make a worker precisely handle a heavy target or to prevent accidents due to careless handling. CONSTITUTION: A spring balancer for sensing load change comprises a cylinder(20), a piston(40), and an elastic member(60). A hanger is mounted on the upper end of the cylinder. The piston is arranged in the cylinder and can reciprocate in the length direction of the cylinder. The elastic member supplies elastic force to the upper part of the cylinder to the piston. The elastic member controls the static load of the target on the lower end of the piston. The elastic member is a dual coil spring, which doubly protects the piston in the cylinder.