Introduction of Insulation Double Girder Overhead Crane

The QY Series Insulated Overhead Crane shares a similar structural design with standard overhead bridge cranes featuring a hook. Its defining characteristic is the integration of specialized insulation systems, which are critical for operational safety in environments where lifted items could conduct electricity from charged equipment to the crane.

To safeguard the operator from potential electrical hazards, multiple high-resistance insulation barriers are strategically installed. These are positioned within the hook assembly, the trolley frame, and at the trolley wheel or rail contact points. These components are typically constructed from durable epoxy phenolic glass cloth laminate board, ensuring reliable insulation.

Features of Insulation Double Girder Overhead Crane

Core Safety & Insulation Features:

• Triple-Layer Insulation System: Our design incorporates three primary insulating barriers:

1. Between the hook and its pulley system.

2. Between the lifting mechanism and the trolley frame.

3. Between the trolley frame and the main crane bridge.

• Each insulating component is engineered to maintain a resistance value of no less than 1MΩ under standard conditions (20-25°C, ≤85% humidity).

• Built for heavy-duty cycles, the main hoist is equipped with a dual-brake system for enhanced operational security.

Robust Mechanical Construction:

• The main girders are fabricated from double-web box sections, designed and tested to meet DIN/FEM standards for minimal deflection.

• Constructed from high-grade Q235B or Q345B steel, with trolley rails made from robust 16Mn flat steel.

• A durable, corrosion-resistant finish is achieved with an epoxy zinc-rich primer and topcoats, totaling 120μm in thickness.

• High-strength bolts connect the girder to the end trucks, ensuring structural integrity and alignment.

• End trucks feature anti-friction bearings, buffers, derailment guards, and either flat or double-flange wheels.

• A secure maintenance walkway with a patterned steel plate and handrail runs alongside the main girder.

Flexible Control & Operation:

Choose the control method that best fits your workflow:

1. Pendant Control: A 36V safety voltage pendant offers direct, intuitive control. It features a two-speed button with an emergency stop and is rated IP65 for durability.

2. Radio Remote Control: Operate the crane freely from the ground using a reliable remote (featuring brands like Yuding). It uses a 24V safety voltage, has a 100m+ range, and offers interference-free operation with an IP65 rating.

3. Cab Control: An ergonomic, climate-controlled operator's cab provides a comfortable working environment with joystick controllers, a master switch panel, and panoramic visibility for precise handling.

Technical Parameters of Insulation Double Girder Overhead Crane

Lifting Capacity: 50T or customized

Span: 21m or customized

Work Class: A5 ~ A6

Lifting Height: 33m or customized

Power Supply: Three-phase AC 50 Hz 380V

Comprehensive Safety & Protection Systems:

Our cranes are equipped with multiple safety mechanisms, including overload limiters, travel limit switches, an anti-falling device for the hoist motor, polyurethane buffers, emergency stop buttons, audible/visual alarms, safety hook latches, and protection against voltage drops and current overload.

Customization & Support:

We specialize in tailoring solutions to your specific needs. Please provide details such as lifting capacity, span, lifting height, power supply, and working conditions for a customized proposal.

After-Sales Commitment:

All our cranes are backed by a one-year warranty. Should any manufacturing defect arise, we provide replacement parts free of charge. After the warranty period, we continue to support your operations by supplying spare parts at competitive cost prices.