QD Series Double-Girder Hoisting Trolley Bridge Crane | Heavy-Duty Industrial Cranes

Introduction to QD Series Double-Girder Hoisting Trolley Bridge Crane

The QD Series Double-Girder Hoisting Trolley Bridge Crane is a reliable heavy-duty lifting solution designed for continuous industrial use. It consists of a box-shaped main beam, hoisting trolley, crane operating device, and safety platforms on both sides for maintenance. With its double-girder structure, the crane ensures high stability, precise lifting, and long-term durability. This bridge crane is ideal for industries that demand strength, efficiency, and safe material handling.

Learn more about FEM official standards and EU CE certification requirements.

Applications of QD Series Double-Girder Hoisting Trolley Bridge Crane

The QD Series Double-Girder Hoisting Trolley Bridge Crane is widely used in different industries, including:

• Heavy-duty structure with continuous working ability (A5–A8 work grades)

• Excellent performance in harsh conditions: high/low temperatures or explosion-proof environments

• Modular and standardized design with strong rigidity

• Easy installation and convenient maintenance

• Flexible operation: wireless remote control or cabin control

• Comprehensive safety devices including overload limiter, limit switches, anti-collision, and alarms

Main Beam of the QD Double-Girder Hoisting Trolley Bridge Crane

• Box-type girder welded with submerged arc automatic technology

• Non-destructive testing meets and exceeds FEM and CE standards

• Built from high-quality carbon steel: Q235B, Q355B, or Q355E

Driving Mechanism of QD Double-Girder Bridge Crane

• Consists of motor, reducer, and brake for stable performance

• Motor: YZR series

• Reducer: ZQ series

• Brake: YW series with asbestos-free brake pads and discs

Wheel and Bearing System

• Wheels made of 50SiMn or 65Mn alloy steel, tempered for durability

• High load capacity and excellent wear resistance

• Bearings with spherical self-aligning design

• Modular design adaptable to different operational needs

Electrical System of QD Double-Girder Hoisting Trolley Bridge Crane

• Smooth hoisting with optional frequency converter for precision control

• Low inertia, high-speed traveling performance

• Compact and easy-to-maintain control box

• High protection level up to IP54

Safety and Protection Devices

• Protective covers and guardrails to avoid hook collisions

• Circuit self-checking and overload protection devices

• Outdoor models equipped with rainproof motor and control box

• Safety systems include anti-collision, sound/light alarms, limiters, overspeed, and zero-pressure protection

Optional Brands & Components

• Motor: Wuxi Xindali, Ningbo Xindatong, Wuxi Hongda, or imported brands

• Reducer: Taixing, Tailong, Dongtai, or imported brands

• Electrical Components: Chint or imported brands

• Inverter: CATET, Huichuan, or imported brands

• Remote Control: Taiwan Yuding, Apollo, or imported brands

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