GB/T 44259-2024 in English
VALIDEarth-moving machinery—Battery electric hydraulic excavator for plateau tunnels
- Issued on:2024-07-24
- Implemented on:2024-07-24
- File Format:PDF
- Delivery:Within 1 day
$334.00
《GB/T 44259-2024土方机械 高原隧道用纯电动液压挖掘机》由TC334（全国土方机械标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
National Standard of the People's Republic of China GB/T 44259-2024
Earth-moving Machinery Pure Electric Hydraulic Excavator for Plateau Tunnels
| Standard Dimensions | Technical Requirements | Test Methods | Conformity |
|---|---|---|---|
| Working Environment | - Altitude Range: 2000m ~ 5000m - Ambient Temperature: -30℃ ~ +45℃ - Relative Humidity: ≤95% | GB/T 7586-2018 | Meets the Requirements |
| Battery Performance | - State of Charge (SOC) Display - Motor Speed and Temperature Monitoring | GB/T 44257.2 | Meets the requirements |
| Insulation Resistance | - DC Circuit: ≥100Ω/V - AC Circuit: ≥500Ω/V | GB/T 5226.1 | Meets the requirements |
Standard Formulation Background and Technology Evolution Analysis
With the increasing demand of the country for green environmental protection and efficient construction, pure electric hydraulic excavators are increasingly used in plateau tunnel projects. The formulation of GB/T 44259-2024 aims to meet the construction needs in the special environment of the plateau and promote the development of earthmoving machinery towards intelligence and electrification.
Implementation suggestions
Case analysis: Application in plateau tunnel construction
A construction unit used a pure electric hydraulic excavator that complies with the GB/T 44259-2024 standard in the Qinghai-Tibet Railway Tunnel Project, which significantly improved construction efficiency and safety. The following are specific implementation suggestions:
- Battery management: Check the SOC value regularly to ensure that the battery is between 40% and 80%.
- Insulation detection: Perform insulation resistance test before each operation to ensure safe operation.
- Battery replacement operation: Replace the battery in strict accordance with standard requirements to avoid high temperature and humid environment.
- Maintenance: Regularly inspect and maintain key components such as hydraulic systems and motor controllers.
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