New measures to prevent the hazards of hoist cranes

According to the relevant specifications, the crane must be equipped with corresponding installation protection equipment, but the reality is very complicated. For the hoist crane, there are still some ill-conceived areas, and its safety protection measures are not perfect. . In this case, is there any way to prevent crane hazards from occurring?

The power equipment in the hoist crane is a three-phase asynchronous cone brake motor. The operating efficiency and operation of this type of motor are closely related to the power supply. When the phase sequence of the power supply changes, the operating direction of the motor is opposite to the original direction. At the time, the limit azimuth limiter will not work, which will leave a series of safety hazards.

In order to avoid the occurrence of lifting injuries caused by the wrong phase, it is necessary to add a wrong phase maintainer to the hoist crane electrical control system. When the power supply has a phase or phase, the device can quickly play a role and decisively disconnect the main power contact To ensure the safe and reliable operation of the crane.