General purpose overhead crane
Heavy-Duty QZ Double Girder Grab Bucket Crane
Product Overview
The Weiyuan QZ Heavy-Duty Double Girder Overhead Bridge Crane is a powerful and reliable solution engineered for the demanding task of handling bulk and loose materials. This crane features a robust double girder design and is equipped with a specialized grab bucket, making it the ideal choice for high-volume industrial applications. It is built with a strong, machine-welded box-type frame, ensuring superior bearing capacity and a long service life. With flexible control options and a focus on safety and efficiency, the QZ model is designed to excel in challenging environments like ports, steel mills, and waste management facilities.
Product Advantages
Robust Structural Design
Engineered with a strong box-type girder structure, the crane offers exceptional rigidity and a high bearing capacity. The main components are welded by machine hand, ensuring structural integrity and long-term durability under heavy-duty operational cycles (A6 work duty).
Optimized for Bulk Materials
The crane is equipped with a high-performance grab bucket, available in mechanical or electro-hydraulic configurations. This specialization allows for the efficient and secure handling of various incompact materials, from scrap metal to ore and industrial waste.
Safe and Reliable Operation
Operation is designed for maximum safety, featuring soft starting and stopping to reduce noise and impact. The system includes top-quality electrical components, such as those from Siemens, and comprehensive safety devices for durable and secure performance.
High-Quality Manufacturing
Critical components, including the wheels, wire rope drum, gears, and couplings, are processed with precision at a CNC machine center. The wheels undergo vacuum casting and medium-frequency quenching, ensuring top-tier quality control and enhanced longevity.
Versatile Control and Comfort
Offers multiple operating methods to suit different industrial needs. Options include a spacious, open-view cabin for operator comfort and direct control, as well as wireless remote control for increased flexibility and safety in hazardous areas.
Application Scenarios
Ports and Goods Yards
Perfect for loading, unloading, and transporting bulk goods in ports, warehouses, and freight yards. Its robust design and powerful grab make it ideal for handling cargo like coal, grain, and minerals efficiently.
Steel Manufacturing and Foundries
Essential for steel plants and foundries for handling scrap metal, charging furnaces, and moving other bulk raw materials. The crane’s strong bearing capacity and reliable operation improve productivity in harsh industrial settings.
Waste Management and Power Plants
An excellent choice for waste disposal facilities and power plants where large volumes of garbage, biomass, or other loose materials need to be moved, sorted, and loaded.
Mining and Construction Sites
Designed to withstand the rigorous conditions of mining operations and large construction projects. It is widely used to transport, assemble, and load incompact materials, contributing to streamlined workflows.
Product Specifications and Dimensions
| Specification | Parameters |
|---|---|
| Lifting Capacity | 5t to 50t load range |
| Span Coverage | 10.5m to 31.5m maximum span |
| Lifting Height | 3m to 25m vertical range |
| Work Level Classification | A6 (Heavy Duty) |
| Lifting Mechanism | Heavy-duty winch trolley with grab bucket |
| Drive System | Heavy-duty slip-ring motor or VVVF-controlled motor |
| Control System | Cabin control, ground control, or wireless remote control |
| Power Supply | 3-Phase 380V 50Hz (or Customized) |
Features at a Glance
✓ Strong Bearing Capacity: Designed to handle loads from 5 tons up to 50 tons.
✓ Durable Frame: Machine-welded, strong box-type girder for maximum strength.
✓ Efficient Bulk Handling: Comes with a specialized grab bucket for incompact goods.
✓ Low-Maintenance Design: Built with high-quality components for a long working life and reduced costs.
✓ Smooth and Safe: Features soft starting and stopping for low-noise, reliable operation.
✓ Flexible Controls: Options include a comfortable cabin and wireless remote for versatile use.
✓ High-Quality Finish: Wheels are vacuum cast and undergo medium-frequency quenching.
FAQ
Q: What is the primary use of a QZ model grab crane?
A: The QZ model is specifically designed for handling bulk, loose, and incompact materials. It is widely used in industries such as mining, port operations, waste management, and steel manufacturing where efficient loading and unloading of materials like ore, coal, scrap metal, and garbage are required.
Q: How do I select the right grab bucket for my application?
A: The choice of grab bucket—whether mechanical or electro-hydraulic—depends on the work duty and the specific materials you need to handle. The grab’s open direction (parallel or vertical to the main beam) can also be customized. Our technical team can help you select the optimal grab configuration based on your operational requirements.
Q: What are the main operational advantages of this crane?
A: The key advantages include its reasonable structure, strong bearing capacity, low operational noise, and smooth, soft-start performance. The commodious cabin provides an excellent view for the operator, while the use of top-quality components ensures reliable, safe, and long-lasting operation with minimal maintenance.
Q: Can the crane’s operating speeds be adjusted?
A: Yes. The crane can be equipped with a heavy-duty slip-ring motor for robust performance or a square cage motor with VVVF control. The VVVF option allows for variable speed control, ensuring smooth acceleration and deceleration for more precise handling and reduced wear on components.
Q: What information should I provide to receive a detailed quotation?
A: For a precise quote, please provide the required lifting capacity (tonnage), span (width), lifting height, the type of materials to be handled, your facility’s power supply details, and your preferred control method (cabin, remote, or ground). Any additional details or drawings will help us create a better solution for you.
