As an important lifting equipment in industrial production, metallurgical technology, and mechanical equipment, cranes have high requirements for their safety and reliability, and bridge cranes are no exception. For the sake of safety, a safety switch will be installed on the trolley of the bridge crane. At the same time, the trolley and the main hook are equipped with safety limit switches and electromagnetic brake systems. These measures effectively protect the safe operation of the crane.
In the working process, the crane is not always in the starting state. It is an intermittent machine and starts or stops continuously. Therefore, the hoisting mechanism, operating mechanism, and rotating mechanism of the bridge crane are equipped with specific braking devices, thus to prevent safety accidents of bridge cranes.
The programmable controller in the bridge crane is the control core of the crane, in charge of the opening and closing of the master controller, limiter, switch button, etc. Considering that after the trolley hits the limit switch and the motor is powered off and brakes, the trolley has to take a braking stroke, so the position of the limit switch of the trolley must be installed properly.
The driving device of the trolley of the bridge crane adopts a three-effect driving device that combines driving, braking and transmission. Its advantages are that the structure is relatively compact, the weight of itself is relatively light, the device is light and convenient, and the operation is relatively stable reliable. Disadvantage is that this kind of mechanism is more time-consuming and laborious, and it is a bit difficult to maintain. The above is the knowledge of limit switches introduced for you. If you have any questions about crane products such as overhead cranes and gantry cranes, please consult us at any time.
Email: info@sinokocrane.com
