Project Summary

On June 8, 2025, the JLL560 Wind Turbine Major Component Replacement System, jointly developed by Jinli Heavy Tech and Goldwind, successfully completed China's first live test at the Liuyuan Wind Farm in Gansu Province.

The system performed full-process gearbox removal, replacement, and installation on a Goldwind GWH204-6.7MW turbine, demonstrating safe, precise, and efficient operation. This milestone marks a major breakthrough in China's intelligent wind turbine O&M equipment sector, providing a new domestic solution for life-cycle cost reduction and efficiency improvement in wind farms.

Core Advantages

1. Main Crane-Free Operation

Traditional major component replacement requires large cranes, which face:

Difficult access (mountainous/desert wind farms)

Long setup time (several days)

High costs (hundreds of thousands of RMB per replacement)

High safety risks

The JLL560 system uses an in-nacelle replacement solution, eliminating the need for main cranes entirely.

2. Intelligent Synchronous Control

 Multi-point coordination with ≤±2mm synchronization accuracy

 Real-time load monitoring and safety protection

 Emergency stop system and wind speed interlock

3. Modular Design

 Modules can be transported via tower elevator

 On-site rapid assembly without auxiliary cranes

 Ideal for confined nacelle spaces

4. Full-Process Capability

Complete workflow: Removal → Translation → Lifting → Installation

5. Domestic Solution

Fuly independent intellectual property rights—no dependence on foreign technology.

Key Technical Parameters

Parameter	Value
Applicable Turbine Models	GWH204-6.7MW and equivalent
Max. Component Weight	60 t
Max. Working Height	Full tower height (~100m)
Synchronization Accuracy	≤ ±2 mm
Modularity	High (split-design for nacelle access)
Operation Cycle	50%+ shorter than traditional methods

Industry Impact

Technical Breakthrough – One of the few systems globally capable of main crane-free major component replacement

Cost Reduction – Lowers replacement costs by 50%+

Safety Improvement – Eliminates main crane risks, reduces height work

Broad Applicability – Suitable for onshore and offshore wind farms

Intelligent O&M – Promotes automation and digitalization in wind power maintenance