Single beam hanging beam detection and frequency conversion speed regulating device working principle

[DIG-DOG]

Variable frequency speed control equipment programmable and optional power supply line switch, line contactor, auxiliary switch, auxiliary relay, etc. Check whether the overload protection device is sensitive and reliable, meets the design requirements, and the opening pressure of the hydraulic overload protection device; Whether the combined error of alarm and cut-off power source set point of mechanical, electronic and comprehensive overload protector meets the requirements. The single beam crane electrical system and control line are divided into several units or nodes according to their distribution positions, such as power input, truck operation control box (device), truck limit switch, electric hoist control box, lifting limit switch, control button, motor, speed regulation resistance, remote control device, etc. All cables with special connection devices are used between each control unit or node. The connection between the special connection device and the cable all use a firm and reliable connection mode, and inject special insulation material into the cavity of the special connection device and the cable connection point, and make the special connection device and the cable form a relatively whole after curing; Solve the problems of connection reliability and shock resistance; Through the different types of special connecting devices, the special connecting devices used in the entire single-beam crane electrical system are not more interchangeable (except for the lines that need to be exchanged during debugging), and the end faces of all connecting devices are marked with wire numbers; Complete the installation of the single beam crane electrical wiring in the factory; Avoid line installation errors; Realize the point-and-shoot connection of all circuits.

The effective benefit of the realization is that all electrical control units can realize the standardized interface in China, and the electrical information system can be quickly, reliably and accurately connected, and the installation and replacement of electrical circuits can be realized without the work of professional electrical engineering and technical management personnel. To a great extent, it can save the cost of electrical installation of single beam crane, the time of electrical line replacement and the human capital resources of technical companies. The electrical installation and replacement of a single beam crane is as simple as using household appliances.

At the end of the operation, the single beam crane should withdraw all segments, place them on the front boom bracket, and hang the hook. The boom crane will rotate the boom to the front of the crane, and reduce the elevation Angle to 40 ~ 60 °, all brakes should be fixed, and the operation room door should be closed and locked. Pull the leg control valve to retract the leg, insert the leg fixing pin, fix the leg, and put the slide, rope and other auxiliary tools into the tool box. Depress the engine clutch pedal, release the hydraulic pump, then transfer the crane or stop the engine, stop the engine.

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