Hook Type Double Girder Overhead Crane

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Capacity:5 – 550 t (Customized)

Lifting Height:6 – 30 m (Customized)

Voltage/Hertz:customized

Brand Name: YUNTIAN

Place of Origin: Henan, China

Product manual

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Introduction

Technical Data (General Version)

Application

Features

PRODUCT INTRODUCTION

The Hook Type Double Girder Overhead Crane, widely known in the industry as the QD model, is a general-purpose, heavy-duty lifting solution engineered for indoor material handling across manufacturing plants, warehouses, and industrial workshops. Featuring a robust double box-girder bridge structure with a hook as the primary lifting attachment, this crane is the most widely deployed overhead crane type in the world—combining proven structural reliability, straightforward operation, and broad applicability across diverse industrial sectors.

TECHNICAL DATA

Parameter	Specification
Lifting Capacity	5 – 550 t (Customized)
Span	10.5 – 31.5 m (Customized)
Lifting Height	6 – 30 m (Customized)
Work Duty Class	A5, A6, A7
Lifting Attachment	Forged hook
Control Method	Cabin / Pendant / Wireless Remote
Power Supply	3-Phase, 380V/400V/415V/440V, 50Hz/60Hz

APPLICATION

Food and beverage processing plants

Warehouses, storage facilities, and logistics centres

Electrical and electronics manufacturing

Machinery repair and maintenance shops

Automotive repair garages and service centres

Small manufacturing workshops and assembly area

FEATURES

Heavy-Duty Double Box-Girder Structure — Two parallel high-grade steel main girders (Q345B) with full-penetration welding provide superior bending, torsion, and shear strength. Even load distribution across both girders eliminates the hook-side offset typical of single-girder cranes and ensures stable handling of heavy, unbalanced loads.

General-Purpose Hook Lifting — The forged hook is the most versatile lifting attachment in industrial crane operations, suitable for handling a wide variety of general cargo, machined components, equipment, and materials without the need for specialised lifting devices.

Smooth VFD-Controlled Operation Across All Motions — All motion axes—hoisting, cross travel, and long travel—are driven by variable frequency drives delivering stepless speed regulation. This delivers shock-free starts and stops, precise load positioning, and reduced mechanical stress on crane components.

Flexible Control Options — The crane supports cabin control (open or closed cabin), pendant control from ground level, or wireless remote control—allowing operators to select the safest and most efficient method for their specific working environment.

Comprehensive Safety Protection — Standard safety systems include overload limiters, upper and lower limit switches, emergency stop button, phase failure protection, travel limit switches on all motion axes, and polyurethane buffers.

Modular, Maintenance-Friendly Design — The crane's core components—bridge frame, crab trolley, hoisting mechanism, and electrical control system—are standardised, independently serviceable modules. This design simplifies routine inspection and reduces long-term maintenance workload.