According to the type of operation, the cantilever crane is generally divided into ground operation (called ground operation) and operation room operation (called air operation); electric single beam crane, electric suspension crane, crane double beam crane, jib crane and crane door type The electrical system of the crane electric hoist and other equipment used is composed of a power supply introduction device, a vehicle operation control box, and an electric hoist control box. Cart limit switch, lift limit switch, control button (adding remote control panel and receiving when remote control operation) equipment; due to different control methods,port crane,airlift cranes also add speed control resistors, cam controllers, etc.; General crane electrical installations are performed by professional electrical technicians at the equipment installation site.
The manufacturer only determines the length of the cable and connects the copper wire nose (if needed) to the cable. The remaining wires can only be cut in the field; then the wires are connected one after the other to the terminals of the electrical components or motors. Due to the installation environment, test methods and restrictions on the installation equipment, the cable connection and precision are often poor, resulting in poor impact resistance of the line. It is not good for multiple commissioning and installation, affecting crane installation time and performance waste, but also for equipment or The motor caused serious damage.
When replacing crane electrical components, repairing wiring or replacing cables and wires, the skilled person still needs complicated and cumbersome complex line measurement and repeated installation processes. Many special tools are required during the installation process. Fire-extinguishing switch problem The fire-extinguishing switch is a safety protection device used to cut off the main circuit power of the crane when the electric hoist is lifted to the limit position, but the installation and debugging is troublesome, and it is difficult for the electrician to perform; and the core guide rod for reliability Both the rope guide and the rope guide need to work properly, but in the case of many lifting hooks (ie, the hook hits the lifting drum cover), the accident is basically due to the lack of a rope guide.mining machine manufacturers
The new type of connection device currently produced has no problem in meeting the electrical system connection of a cantilever crane with a weight of less than 20t. The effective benefit of the realization is to achieve a standardized interface for all electrical units, to achieve fast, reliable and accurate quick connection of the electrical system, without the need for professional electrical technicians to install and replace the circuit, saving the crane a large degree of electrical installation costs, electrical line replacement Time and technical human resources. Installing and replacing the crane’s electrical appliances is as simple as using a household appliance.