Electromagnetic Overhead Crane

The overhead travelling crane (hereinafter referred to as "the crane") is a universal overhead crane aligned with international standards, designed and manufactured in accordance with the GB/T 14405 standard, adopting European technology and referencing relevant FEM European crane standards.

1.The crane mainly consists of a bridge, a trolley, a long-travel mechanism, electrical components, and an operator cabin (for ground or remote control operation).

2.The metal structure includes the bridge, the trolley frame, and their accessories. The bridge is formed by connecting two main girders and two sets of end carriages. The primary material used is Q235B, but custom materials can be provided upon special request. Rails are laid on the upper surface of the main girders for the trolley to travel. Some electrical equipment is installed on the walkway on the drive side of the main girders, while the trolley power supply system is installed on the upper part of the walkway on the conductor side. A conductor guard rack for the long-travel mechanism is provided to prevent the wire rope from colliding with the power supply.

3.The trolley comprises a hoisting mechanism and a trolley travel mechanism. The hoisting mechanism is mounted on the trolley frame and features an independent drive system. An electric motor drives a gear reducer, whose low-speed shaft rotates a drum wound with a wire rope. By controlling the forward and reverse rotation of the electric motor, the lifting and lowering of the electromagnet can be achieved. (Note: The original text mentions "electromagnet" here, which is typically associated with electromagnetic cranes. If this is strictly for a hook crane, it should read "hook".)

4.The trolley travel mechanism adopts either a centralized or individual drive configuration. When powered on, the brake opens, and the electric motor outputs power. After being geared down by the reducer, it drives the wheels to complete the forward and backward movements of the crane. When powered off, the brake closes, and the trolley stops.

5.The long-travel mechanism adopts an individual drive configuration, and its working principle is similar to that of the trolley travel mechanism.

Technical Parameters

Product Uses

Metallurgical plants and steelmaking workshops: Used for lifting magnetic ferrous metal products and materials, such as steel ingots, billets, steel sections, pig iron blocks, and cast iron ingots.

Scrap metal recycling and processing facilities: Used for the unpackaged and unbound rapid collection, stacking, and transfer of scrap steel and iron, nails, wire, machining swarf, and blast furnace charge materials.

Machinery manufacturing and machining workshops: Used for handling various steel materials, iron blocks, iron chips, and other magnetic mechanical components.

Ports and large storage yards: Used for the loading, unloading, and transfer of magnetic cargo.

Product Operate Guide

1.The operation of all mechanisms of the crane is controlled either in the operator cabin or via a hand controller. This allows for the starting, braking, speed regulation, and forward/reverse control of the electric motors for the hoisting, long-travel, and trolley travel mechanisms.

2.The control panel is equipped with a power indicator, an emergency stop switch, start and stop buttons, and a key switch.

3.Directional indicators are provided, and the crane is operated using the corresponding directional buttons. Before operation, it is essential to check the surrounding area for any personnel or obstacles to ensure safety.

Product Video

FAQ

Insufficient suction of the electromagnetic chuck, or failure to magnetize/demagnetize.

Causes:

1. Rectifier device failure;

2. Open circuit or short circuit in the cable or connectors.

Solutions:

1. Inspect and restore the stator wiring;
2. Check the cable from the drum to the chuck, especially in areas prone to bending and breaking, and repair or replace the cable.

Hydraulic push rod fails to actuate.
Causes:
1. Power supply disconnection;
2. Stiffness at mechanical hinge points;
3. Lack of oil in the cylinder;

4. The thrust of the hydraulic push rod is lower than the braking spring force.

Solutions:
1. Check the power circuit and wiring;
2. Eliminate the hinge point fault and apply lubrication;
3. Add oil to the specified level;
4. Replace with an appropriate hydraulic push rod.

Switch or circuit breaker is turned on:

Cause: Single-phase grounding fault in the control circuit.

Solution: Inspect the control circuit and eliminate the grounding fault.

Limit switch failure:

Causes:
1. Inaccurate adjustment of the cam plate;
2. Poor contact or poor disconnection of the contacts;
3. Wiring errors.

Solutions:
1. Readjust the cam plate;
2. Adjust and repair the contacts;
3. Check the wiring and correct the connections.