适用于轧制车间物料搬运的智能电磁桥式起重机解决方案

2025 年 11 月 24 日

Lianyuan Steel Overview

Lianyuan Steel, a major state-owned enterprise under the Fortune Global 500 Hunan Steel Group, has an annual production capacity of over 12 million tons. As a leading high-quality steel production base in Central and Southern China, it operates the world’s largest medium and thin-gauge heat-treated plate production line. Its silicon steel base metal output also ranks first in China, with products widely used in landmark projects such as the Hong Kong–Zhuhai–Macao Bridge and Tesla.

To upgrade material handling operations in its rolling workshop, Lianyuan Steel introduced DAFANG’s 电磁桥式起重机, achieving a significant step toward smart, efficient, and safe steel logistics. Equipped with electromagnetic lifting technology, laser positioning, and an intelligent monitoring platform, the system has greatly enhanced operational efficiency and workplace safety, supporting the steel industry’s move toward standardized and intelligent crane operations.

设备概览

To improve the handling efficiency of the rolling workshop, Lianyuan Steel adopted the QCL-type Electromagnetic Overhead Crane, featuring:

Double-girder structure
Rated capacity: 20+20 tons (main & auxiliary hook)
Span: 28 m
Lifting height: 22 m
Electromagnetic lifting disc: Ø 2.2 m, lifting capacity 18 tons
Operation modes: ground remote control + cabin operation
Fully compliant with GB/T 3811 crane design standards
Certified to ISO 12482
Engineered for high-temperature and heavy-dust metallurgical environments

核心应用场景

Steel Billet Transfer

Task: Handling hot billets (15 tons each, 12 meters long)
Result:
自动磁性抓取系统（响应时间≤3秒）
Intelligent anti-collision for trolley & bridge travel
Transfer efficiency increased by 60%
人工干预减少了 80%

Bar Stock Yard Management

Task: Multi-layer bar bundle stacking (8 tons per bundle)
Result: Laser positioning accuracy ±10 mm, Yard utilization improved by 40%

维护协助

Task: Lifting rolls and bearing housings (10 tons each)
Result: Variable-frequency control (0.5–10 m/min lifting speed), Hydraulic anti-sway system, Maintenance safety increased by 75%

关键技术创新

电磁-机械双驱动系统

Redundant power supply with onboard UPS ensures 15 minutes of magnetic holding during power loss
Optional mechanical grab mode for mixed material handling

智能监测与预警

Integrated stress, temperature, and collision-avoidance monitoring
Data transmitted in real time to the central control room via remote supervision platform

Enhanced Structural Safety

Main girders welded with Q345D steel and reinforced with Q460E high-strength plates
Equipped with wind-proof anchoring (resistance up to Level 12 winds)

Customer Benefits & Performance Results

Efficiency Boost: Daily billet throughput increased from 1,200 t → 1,800 t, improving production rhythm by 25%
Cost Optimization: Electromagnetic lifting consumes 40% less energy than mechanical grabs
→ Annual electricity savings approx. 600,000 RMB
Safety Performance: Zero safety incidents in four years of operation. Certified to ISO 45001 occupational health & safety standard