YJ/T 2-2011 in English
VALIDTest code for earthquake rescue equipment - Hydraulic powered tools
- Issued on:2011-12-27
- Implemented on:-
- File Format:PDF
- Delivery:Via email within 1~3 business days
$233.00
本标准规定了液压动力救援工具的检测要求、检测内容、检测指标和检测方法，适用于地震救援用扩张器、剪切器、剪扩器、撑顶器等液压动力工具的定期检测。
Introduction
Background of standard technology evolution
This standard was upgraded from the original DB/42-2011 to YJ/T 2-2011, and the responsible unit was adjusted to the National Technical Committee for Standardization of Emergency Management and Disaster Reduction and Relief (SAC/TC 307), marking the in-depth integration of my country's earthquake rescue equipment detection system and emergency management system.
Classification of core inspection objects
| Tool type | Inspection focus | Key indicators |
|---|---|---|
| Expander | Maximum/minimum expansion force | ≥90% of the nominal value at 25mm from the pliers tip |
| Cutter and expander | Dual function verification | Ability to cut Q235 steel meets the standard |
| Spreader | Axial bearing capacity | No displacement for 3min |
Innovative testing methods
Dynamic pressure retention test
Standard clause 6.9 requires simulating a power interruption scenario: disconnect the oil pipe after reaching the maximum expansion force, and maintain a displacement of no more than 3mm for 9 minutes. This test directly verifies the reliability of the tool under extreme working conditions.
Temperature adaptability verification
Through the extreme temperature cycle test from -30℃ to 55℃ (clause 6.1), the tool is required to complete 5 complete operation cycles after a sudden temperature change, ensuring its applicability in polar/high temperature rescue scenarios.
Key Performance Indicators Comparison
| Test Items | Test Accuracy | International Benchmarking |
|---|---|---|
| Expansion Force Measurement | Grade 1 Accuracy Sensor | Stricter than 2% Error Limit of NFPA 1936 |
| Shear Test | 5 Types of Materials and 7 Specifications | Covering All Grades of EN 13204 |
| Pressure Test | 1.2 Times Rated Pressure | Equivalent to ISO 18797-2 Requirements |
Implementation recommendations
- Periodic testing: Full-item testing must be performed every year or after 100 hours of work (Clause 4.2.1)
- Document integrity: The inspection must include a complete tool force-displacement characteristic curve (Appendix A)
- Environmental control: The temperature during testing should be controlled within the range of 10-35°C (Clause 4.2.3)
- Data traceability: It is recommended to establish an expansion force/tension force database covering all test positions
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