Product Overview

The QD Double Girder Hook Overhead Crane is a double girder bridge crane fitted with a trolley-mounted winch hoist. It handles heavy materials, machinery, steel structures, molds, and industrial equipment in workshops, warehouses, steel mills, power plants, and manufacturing facilities. The hook is suitable for general-purpose lifting where bulk material grabs or special lifting attachments are not required.

The crane adopts a box girder structure with a trolley running on top of the main girders. Standard lifting capacities range from 5 to 550 tons, with custom span, lifting height, working duty, control method, and electrical configuration available for different plant layouts and production requirements.

أنواع

أجزاء

مواصفات

The QD Double Girder Hook Overhead Crane uses different hook types depending on lifting capacity, load shape, and working conditions. Each hook type is designed for specific handling requirements, from general material lifting to heavy-duty and high-safety applications.

Single Hook

Compact structure with low dead weight. Used as the standard lifting attachment for light and medium-duty QD overhead cranes. Preserves lifting height and allows straightforward inspection and replacement. Common in general workshops, warehouses, and equipment manufacturing lines.

Typical Capacity: 5–80 t
Material: Forged alloy steel
Applications: Machinery, steel fabrication, molds, industrial equipment

Double Hook

Two forged hook bodies installed on the same hook block. Load is shared through a symmetrical structure, keeping lifting stable under heavy conditions. Used on high-capacity cranes with demanding duty requirements.

Typical Capacity: 80–550 t
Material: Forged alloy steel
Applications: Steel mills, heavy machinery, power equipment, large steel structures

Laminated Hook

Built from multiple alloy steel plates with strong fatigue and impact resistance. Plate assembly structure allows easier inspection and part replacement during maintenance. Applied in continuous production and heavy-duty operating conditions.

Typical Capacity: 100–550 t
Working Duty: A6–A8
Applications: Metallurgical plants, heavy fabrication, continuous production lines

C-Hook (Optional)

Used for coil handling. The hook arm passes through the coil inner diameter to lift directly, no slings or chains required. Dimensions are matched to coil size, width, and weight.

Typical Capacity: 5–50 t
Materials: Steel coils, aluminum coils, copper coils
Applications: Rolling mills, coil warehouses, steel service centers

Rotating Hook (Optional)

Provides controlled rotation of the load during lifting and positioning. Small capacities use manual rotation. Heavier loads use electric rotation for positioning control. Rotation angle and drive type are set according to working requirements.

Typical Capacity: 5–100 t
Rotation: Manual or electric, up to 360°
Applications: Equipment installation, mold handling, pressure vessels, machinery assembly

Special Lifting Hook (Custom)

WEIHUA supplies non-standard lifting assemblies based on application requirements. Includes forged hooks, ladle hooks, spreader beams, lifting beams, coil lifters, billet lifters, and related attachments. Dimensions, connection points, and lifting interfaces are produced according to crane and load conditions.

Typical Capacity: Up to 550+ t
Optional Attachments: Lifting beam, spreader beam, coil lifter, ladle hook, billet lifter
Applications: Steel plants, precast concrete factories, shipyards, heavy equipment manufacturing

أجزاء

A QD Double Girder Hook Overhead Crane consists of the bridge structure, hoist trolley, crane travelling mechanism, hoisting mechanism, electrical system, control system, and safety devices. These components work together to provide stable lifting, accurate positioning, and reliable operation in heavy-duty industrial applications.

QD Double Girder Hook Overhead Crane parts

Bridge Structure: The bridge structure is the main steel framework of the crane, consisting of two box girders, end carriages, walkways, and trolley rails.

Hoist Trolley: The hoist trolley runs on the bridge girders and integrates the hoisting mechanism. It can be configured with a single hook or main and auxiliary hooks according to lifting capacity.

Crane Travelling Mechanism: The crane travelling mechanism includes the bridge travelling system and the trolley travelling system, each driven by independent motors and transmission components.

Hoisting Mechanism: The hoisting mechanism consists of the motor, gearbox, brake, drum, wire rope, and hook assembly.

Electrical System: The electrical system includes the power supply, control cabinet, electrical components, wiring, and optional PLC and variable frequency drive (VFD) systems.

Control System: The control system is available with pendant control, wireless remote control, or an operator cabin.

Safety Devices: Safety devices include overload protection, limit switches, emergency stop, buffers, brakes, and phase protection devices.

From the bridge structure to the electrical system, every component is manufactured and configured to match project requirements. WEIHUA offers complete customization for capacity, control system, electrical brands, and operating conditions.

مواصفات

The following technical specifications cover the standard configuration of the QD Double Girder Hook Overhead Crane. All parameters, including lifting capacity, span, lifting height, travel speed, and control system, can be customized to meet specific application requirements.

مُعامل	مواصفات
نوع الرافعة	QD Double Girder Hook Overhead Crane
قدرة الرفع	5–550 t (Single Hook)5/5–550/100 t (Main & Auxiliary Hook)
سبان	10.5–31.5 m (Customizable: 7–40 m)
ارتفاع الرفع	6–30 m (Customizable)
الطبقة العاملة	A3–A8
Main Hoist Speed	1.8–15.5 m/min
Auxiliary Hoist Speed	7.2–19.5 m/min (Optional)
سرعة عربة النقل	20–44.6 m/min
سرعة حركة الرافعات	20–116.8 m/min
Main Girder Type	Box Girder
Rail Type	QU70 / QU80 / QU100 / QU120
مزود الطاقة	3 Phase, 380V, 50Hz (Customizable)
طريقة التحكم	Pendant Control / Wireless Remote / Cabin Control
نظام الدفع	Standard or Variable Frequency Drive (VFD)
درجة الحرارة المحيطة	-20°C to +40°C (Optional for Special Environments)
أجهزة السلامة	Overload Limiter, Limit Switches, Emergency Stop, Buffers, Phase Protection

The specifications above are provided as standard references. WEIHUA can customize lifting capacity, span, lifting height, working class, travel speed, electrical components, and control methods to meet different operating conditions and project requirements.

مزايا

High Lifting Capacity — Available in capacities from 5–550 t, with single-hook or main and auxiliary hook configurations for different lifting tasks.

Heavy-Duty Structure — The box girder design provides high strength and rigidity. Standard spans range from 10.5–31.5 m, with larger spans available on request.

High Working Class — Supports A5–A8 duty classes for frequent lifting and continuous operation in manufacturing and heavy industry.

Smooth Travel — Optional VFD control provides stable hoisting, trolley travel, and bridge travel with adjustable operating speeds.

Flexible Configuration — Lifting height, span, control method, electrical components, and operating speed can be configured to match different projects.

Reliable Safety Protection — Standard equipment includes overload protection, limit switches, emergency stop, buffers, and braking systems for daily industrial operation.

تطبيق

The QD Double Girder Hook Overhead Crane is used for lifting, transferring, loading, unloading, and positioning heavy materials in fixed-span industrial facilities. It is suitable for medium- and heavy-duty handling tasks involving steel products, machinery, production equipment, and large industrial components.

Steel Plants

Handles steel coils, steel plates, billets, structural steel, and steel pipes.

Machinery Manufacturing

Lifts machine frames, CNC machines, gearboxes, motors, and large castings.

Metal Fabrication

Moves steel beams, welded structures, fabricated components, and heavy assemblies.

Shipbuilding

Moves ship sections, steel plates, marine engines, and shipbuilding components.

Foundries

Transfers casting molds, metal castings, mold boxes, and production tooling.

Power Plants

Lifts turbines, generators, transformers, pumps, and maintenance equipment.

Warehouses and Logistics Centers

Handles industrial equipment, palletized cargo, machinery parts, and heavy containers.

Automotive Manufacturing

Transfers stamping dies, vehicle frames, engines, production fixtures, and assembly equipment.

How to Choose a QD Double Girder Hook Overhead Crane

The right QD Double Girder Hook Overhead Crane depends on your lifting requirements. Before selecting a crane, confirm the load, workshop size, lifting height, and operating frequency. These factors determine the crane configuration.

Lifting Capacity: Select the crane according to the maximum load. Standard capacities range from 5–550 t.
Span: Measure the distance between the runway rails. Standard spans are 10.5–31.5 m.
Lifting Height: Choose the lifting height according to the building height and lifting clearance.
Working Class: Select the working class based on operating frequency. A5 is suitable for general production, while A6–A8 are used for heavy-duty operation.
Control Method: Choose pendant control, wireless remote control, or cabin control according to the operating environment.
Working Environment: Consider indoor or outdoor installation, temperature, dust, humidity, and other site conditions.

If you are not sure which model to choose, contact our team. Send us your lifting capacity, span, lifting height, and application, and we will recommend a suitable solution for your project.

Once a model has been selected, companies will naturally focus on pricing. For more in-depth information, please read the article: “Cranes for Sale: A Guide to Prices, Types, and Specifications.”

Custom QD Double Girder Hook Overhead Crane

Different plants have different lifting capacities, workshop dimensions, operating frequencies, and material handling requirements. WEIHUA supplies QD Double Girder Hook Overhead Cranes built to match your production line, installation space, and working conditions. Whether you are planning a new facility or upgrading an existing crane system, our engineering team can develop a suitable solution. Contact us to discuss your project requirements.

Lifting Capacity — 5–550 t or custom capacity.
Span — Designed to match the building width and runway layout.
Lifting Height — Customized for plant height and lifting clearance.
Working Class — A3–A8 for different operating frequencies.
Hoisting Speed — Standard or variable speed configuration.
Crane & Trolley Travel Speed — Matched to production requirements.
Control Method — Pendant control, wireless remote control, or cabin control.
Power Supply — Voltage and frequency based on local standards.
Electrical Components — Optional international electrical brands.
Drive System — Standard drive or VFD control.
Hook Configuration — Single hook or main and auxiliary hooks.
Safety Devices — Additional protection systems for special operating conditions.
Operating Environment — Indoor, outdoor, high temperature, dust, humidity, or other special environments.
Special Functions — Anti-sway control, weighing system, remote monitoring, and other optional functions.

Custom QD Double Girder Hook Overhead Crane00

QD Double Girder Hook Overhead Crane Manufacturer and Supplier

وي هوا is a professional manufacturer and supplier of QD Double Girder Hook Overhead Cranes, with decades of manufacturing experience and projects delivered across a wide range of industries. Our products are manufactured under strict quality standards and supported by international certifications, providing reliable lifting solutions for factories, steel plants, warehouses, power stations, and other industrial facilities.

From engineering design and manufacturing to installation and after-sales support, WEIHUA provides one-stop material handling solutions for new production lines, plant expansion, and equipment upgrades. اتصل بفريقنا for technical support, product recommendations, and a quotation based on your project requirements.

أسئلة شائعة

What is a QD Double Girder Hook Overhead Crane used for?

It is used for lifting and moving heavy materials in workshops, warehouses, steel plants, and power stations. It handles steel coils, machine parts, molds, and large assemblies within fixed-span indoor or outdoor facilities.

ما هي سعة الرفع المتاحة؟

Standard lifting capacity ranges from 5 to 550 tons. Common configurations include 16/3.2t and 50/10t with main and auxiliary hooks for different lifting tasks in production lines.

How to choose the right crane for my workshop?

Key factors include load weight, span, lifting height, and working class. For frequent operation, A5–A6 is common, while heavy-duty applications usually require an A7–A8 configuration.

What is the difference between single girder and double girder overhead crane?

Double girder cranes have higher lifting capacity, better stability, and longer service life. They are used for heavy-duty applications above 20 tons, while single girder cranes are mainly for light to medium loads.

Can the crane be customized?

Yes. Span, lifting height, speed, control method, electrical system, and working class can be customized. Some projects require special voltage, explosion-proof design, or high-frequency operation configurations.

What control methods are available?

Options include pendant control, wireless remote control, and operator cabin control. Remote control is widely used for flexible operation, while cabin control is preferred for large-span and high-duty applications.

ما هي أنظمة السلامة المتضمنة؟

Standard systems include overload limiter, limit switches, emergency stop, braking system, and buffers. Heavy-duty models can also integrate additional protection for high-frequency operation environments.

What is the service life of a QD overhead crane?

Under proper operation and maintenance, the service life is typically 15–25 years. Working class, load frequency, and maintenance conditions directly affect overall equipment lifespan.

خدمة ما بعد البيع

تطورت شركة "وي هوا"، التي تأسست عام 1988، لتصبح رائدة عالمية في مجال التصنيع الذكي في الصين. نحن متخصصون في البحث والتطوير وإنتاج الرافعات الذكية، مع توفير حلول المركبات الموجهة آليًا (AGV). تقدم فرقنا الهندسية والتسليم وما بعد البيع المحترفة دعمًا تقنيًا شاملًا، وحلولًا مخصصة، وإرشادات تركيب في الموقع، وخدمات عالمية سريعة الاستجابة لضمان تشغيل كل مشروع بأمان وكفاءة.

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QD Double Girder Hook Overhead Crane