QZ double girder grab overhead crane
Authentication mark:
Capacity:
5 - 32 t (including grab dead weight)
Lifting Height:
Up to 20 m (customizable)
Span:
10.5 - 31.5 m
Voltage/Hertz:
3-Phase AC 380V, 50Hz
Working Class:
A6 - A8 (Heavy Duty)
Apply : Power Plants,Freight Yards and Ports,Steel Mills and Foundries,Mining and Quarries,Chemical and Fertilizer Plants,Construction Material Plants
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Introduction
Technical Data
Application
Certificate
PRODUCT INTRODUCTION
The QZ Double Girder Grab Overhead Bridge Crane is a heavy-duty double girder crane purpose-built for handling loose bulk materials. The main beam uses a bias-rail box-type double girder structure optimized for lightweight design with Q345-B high-strength steel plate, providing strong bearing capacity with reduced self-weight. The hoisting mechanism features an imported motor and reducer in an integrated compact design — combining the hoist motor, reducer, drum, and limit switch into a single unit that saves installation space while improving reliability through modular construction. The trolley traveling mechanism is standard-equipped with variable frequency drive control at 20 m/min, delivering smooth operation with minimal load swing and precise positioning.
TECHNICAL DATA
| Parameter | Specification | Parameter | Specification |
| Crane Type | QZ Double Girder Grab Overhead Bridge Crane | Main Beam Structure | Bias-rail box-type double girder, optimized design, Q345-B steel plate |
| Lifting Capacity | 5 - 32 t (including grab dead weight) | Span | 10.5 - 31.5 m |
| Lifting Height | Up to 20 m (customizable) | Work Duty | A6 - A8 (Heavy Duty) |
| Trolley Speed | 20 m/min (VFD controlled) | Hoist Motor | Imported motor and reducer, integrated compact design |
| Electrical Components | Siemens main electrical components | Motor Protection | IP44 / IP54, F or H Class Insulation |
| Power Supply | 3-Phase AC 380V, 50Hz | Control Method | Driver’s room operation (end entry, side entry, top entry) |
| Surface Treatment | CNC machined wheels, drums, gears and couplings; manipulator welded box structure |
APPLICATION
Power Plants Coal handling, biomass fuel handling, ash removal from storage yards to hoppers
Freight Yards and Ports Loading and unloading bulk materials such as ore, sand, gravel, and grain from ships and rail cars
Steel Mills and Foundries Handling scrap steel, iron filings, aluminum ingots, and raw ore feeding to furnaces
Mining and Quarries Transporting crushed ore, aggregates, and minerals from stockpiles to processing equipment
Chemical and Fertilizer Plants Handling raw bulk materials such as limestone, gypsum, and phosphate rock
Construction Material Plants Moving sand, gravel, and cement clinker in concrete batching and precast facilities
