Safety brakes use the principle of mechanical brake friction braking to brake. It is installed on the end of the low -speed roll. On the roller, the left and right spiny wheels are braking and friction with the high -strength screws. Under normal circumstances, the spiny wheel and braking friction band rotate with the roller, and the roller at the end of the spiny paw is attached to the guide wheel under the action of spring. The lower wheels throw the roller out, so that the roller of the roller in the roller of the spiny wheels is stopped. Therefore, the heavy objects of the whereabouts are supported to live in the braking.

This type of safety brakes are installed at the end of the low -speed transmission end roll of the reducer. 2 Half of the spiny wheels, tighten the rossed friction band through high -strength screws. Under normal circumstances, the spiny wheel and braking friction band rotate with the roller, and the thorn and electromagnets are fixed on the rack. When the upper speed of the promotion mechanism is reduced, the speed measurement device in the control line board is controlled. As a result, the electromagnetic electromagnetic is used to act on the end of the real of the spiny claws that the tip card is stopped into the roll of the roller in the roll of the roller.

This type of safety brake device is also installed at the end of the low -speed transmission end roll of the reducer. It is a braking friction band and a centrifugal block gear device. The brake friction band is wrapped on the roller, and the four spiny wheels are tightly tightened by the high -strength screws to tighten the braking friction band. The four centrifugal blocks and the block are all fixed on the centrifugal block, which is located in the roll tube. Under normal circumstances, the centrifugal block and the brake friction band rotate together with the roll. When the working brakes fail or the transmission part is broken, the load is quickly decreased so that the centrifugal block is opened under the action of centrifugal force. Therefore, the heavy objects of the whereabouts are supported to live braking.