General purpose overhead crane
Weiyuan QZ-Type Grab Bucket Overhead Crane
Product Overview
The Weiyuan QZ-Type Grab Bucket Overhead Crane is a specialized, heavy-duty lifting solution designed for the efficient handling of bulk materials. Engineered for high-frequency, demanding environments, this crane is equipped with a powerful grab bucket, making it the essential workhorse for waste-to-energy plants, freight yards, workshops, and wharfs. Its robust double-girder structure ensures maximum stability and reliability for continuous operation. The QZ grab crane automates the process of loading, transporting, mixing, and stacking bulk materials like garbage, scrap metal, and industrial waste, significantly boosting operational efficiency and safety.
Product Advantages
Specialized for Bulk Material Handling
The core of this crane is its high-performance grab bucket, which is specifically designed for capturing and moving loose, irregular materials. The powerful hydraulic or mechanical grab ensures a secure grip and high filling rate, maximizing the volume of material moved in each cycle and enhancing overall productivity.
Heavy-Duty and Reliable Construction
Built for A6 heavy-duty service, this crane features a robust double-girder design and is fabricated from high-strength steel. The structure is engineered to withstand the intense, repetitive stress of grab operations, guaranteeing a long service life and exceptional reliability in harsh industrial environments.
Automated and Intelligent Operation
Weiyuan grab cranes can be equipped with advanced automation features, including semi-automatic or fully automatic control systems. These systems enable automated feeding, stacking, and mixing operations, along with anti-sway technology and precise positioning. This reduces the need for manual intervention, minimizes operator fatigue, and ensures consistent, efficient performance 24/7.
Enhanced Safety for Harsh Environments
Designed to operate in dusty, high-temperature, and corrosive environments, the crane’s key components, including motors and electrical systems, are housed in protective enclosures (IP55 or higher). A comprehensive suite of safety features, such as overload limiters, emergency stops, and travel limit switches, ensures safe operation at all times.
Customized for Your Application
Every bulk handling task is unique. Weiyuan provides fully customized grab crane solutions, allowing you to specify the lifting capacity, span, lifting height, grab bucket type (e.g., orange peel or clamshell), and level of automation to create a system that perfectly matches your facility’s requirements.
Application Scenarios
Waste-to-Energy and Garbage Incineration Plants
This is the primary application for the QZ grab crane. It is used for feeding garbage from the storage pit into the incinerator hopper, as well as for mixing and turning the waste to ensure uniform combustion. Its automated capabilities are crucial for efficient plant operation.
Scrap Steel Yards and Foundries
Ideal for loading and unloading scrap metal, feeding furnaces, and moving bulk materials within a steel mill or foundry. The robust orange-peel grab bucket is perfect for handling irregularly shaped scrap steel.
Ports and Wharfs
Excellent for unloading bulk cargo such as coal, grain, sand, and ore from ships and barges and loading it onto trucks or conveyor systems. Its high efficiency significantly reduces vessel turnaround time.
Freight Yards and Bulk Storage Facilities
Provides an efficient solution for handling and stacking bulk materials in large open or covered storage yards. It can manage large stockpiles and efficiently load materials for transport.
Product Specifications and Dimensions
| Specification | Parameters |
|---|---|
| Lifting Capacity (Crane + Grab) | 5 Ton – 30 Ton (Customizable) |
| Grab Bucket Volume | 2.5 m³ – 20 m³ (Customizable based on material density) |
| Crane Span | 10.5m – 31.5m (Customizable) |
| Lifting Height | Up to 30m (Customizable) |
| Crane Type | QZ Model Double Girder Grab Bucket Crane |
| Work Level | A6 – A7 (Heavy to Severe Duty) |
| Hoisting Mechanism | Specialized Winch Trolley for Grab Operation |
| Grab Type | Orange Peel Grab, Clamshell Grab (Hydraulic or Mechanical) |
| Control Method | Cabin Control (Standard), Semi-Automatic, Fully-Automatic |
| Power Supply | 380V/415V/440V, 50/60Hz, 3-Phase or Customized |
| Main Electric Parts | Schneider, Siemens, ABB, or equivalent reputable brands |
| Protection Class | IP55 or higher for enhanced environmental resistance |
Features at a Glance
✓ Specialized Grab Bucket: Designed for efficient bulk material handling.
✓ Heavy-Duty A6 Rating: Built for continuous, high-frequency operation.
✓ Advanced Automation Options: Available with semi or fully automatic control for maximum efficiency.
✓ Durable and Robust Design: Ensures a long service life in harsh environments.
✓ Comprehensive Safety Systems: Guarantees safe and reliable operation.
✓ Fully Customizable: Tailored to your specific material, capacity, and facility needs.
✓ High-Quality Components: Equipped with reliable international brands for motors and electronics.
FAQ
Q: What is the difference between a mechanical grab and a hydraulic grab?
A: A mechanical grab is operated by the crane’s own wire rope system (usually four ropes) to open and close. A hydraulic grab has its own integrated hydraulic power pack and is controlled electrically, offering stronger gripping force and more precise control, making it ideal for tougher materials.
Q: What information is needed to get a quotation for a grab crane?
A: To provide the best solution, we need to know: 1) The type of material to be handled and its bulk density (e.g., household waste, 0.5 t/m³), 2) The required lifting capacity and grab volume, 3) The crane span and lifting height, and 4) The required level of automation and control method.
Q: Can this crane operate automatically?
A: Yes. We offer advanced control systems that enable fully automatic operation, including automated feeding, material tracking, and anti-sway control. This is a very common requirement for modern waste-to-energy plants to maximize efficiency and safety.
Q: Why is cabin control the standard for grab cranes?
A: Due to the high-frequency, complex nature of grab operations and the often harsh operating environment, a climate-controlled cabin provides the operator with the best visibility, safety, and comfort for sustained periods of work, leading to better overall performance.
Q: How does Weiyuan ensure the quality and reliability of its grab cranes?
A: With nearly 40 years of experience, Weiyuan engineers and manufactures grab cranes under a strict ISO-certified quality system. We use wear-resistant materials for our grab buckets, robust structural designs, and high-endurance components. Each crane is fully tested for performance and safety before shipment to ensure it can withstand the rigors of heavy-duty, 24/7 operation.
