JT/T 1284-2020 in English
VALIDTechnical specification for low deck semi-trailer
- Issued on:2020-02-28
- Implemented on:2020-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | JT/T 1284-2020 |
| Document status: | VALID |
| Title in English: | Technical specification for low deck semi-trailer |
| Title in Chinese: | 低平板半挂车技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-02-28 |
| Implemented on: | 2020-04-01 |
| ICS Classification: | 43.080.10-Trucks and trailers |
| Chinese Classification: | T20-Automobile chassis and vehicle body in general |
| Professional Classification: | JT-Transport |
| Related Keywords: | low-bed semi-trailer
low deck semi-trailer introduction interpretation special low-bed semi-trailer enhanced low-bed semi-trailer towing pin specifications no standard technical dimensions |
| Related Topics: | trailer
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本标准规定了低平板半挂车的通用技术要求、低平板增强型半挂车特殊要求、试验方法、检验规则，以及标识、随车文件和储存等。
本标准适用于低平板半挂车的设计、生产、检验和使用。
Introduction
Interpretation of the core content of the standard
| Technical dimensions | Special low-bed semi-trailer | Enhanced low-bed semi-trailer |
|---|---|---|
| Towing pin specifications | No. 50 (GB/T 4606) | No. 90 Type A + No. 50 Type A spare parts (GB/T 4607) |
| Maximum loading mass | In accordance with GB 1589 | Three-axle ≥42t/five-axle ≥55t |
| Structural steel strength | General requirements | Longitudinal beam≥700MPa high-strength steel |
Analysis of key technical requirements
4.2.1 Dimension parameter control
The standard strictly stipulates that the length of the outer dimensions of the low-bed semi-trailer is ≤13.75m, and the height of the load-bearing surface from the ground is ≤1.15m. The width of the enhanced type can be up to 3.4m in the extended state, but the channel circle diameter must be ≤10m.
5.1.3 Variable axle design
The variable five-axle vehicle model must reserve two axle installation interfaces, and the pre-installed axle group must be consistent with the original axle specifications. The state conversion time is required to be ≤90 minutes (including lifting assistance).
Key points of the test method
- Securing point test: Single point needs to withstand 125kN multi-directional tensile test (6.1.7)
- Lateral stability: Full load 80km/h test lateral acceleration amplification factor ≤1.5 (4.3.3)
- Extended function verification: Load-bearing surface expansion/recovery operation requires ≤30 minutes (5.2.5)
Standard evolution and implementation suggestions
Compared with the old version, this standard adds:
- Technical requirements for the classification of enhanced semi-trailers
- Interface specifications for variable five-axle structures
- Digital detection requirements (such as towing pin projection deviation ≤3mm)
- Strengthen high-strength steel welding process control (4.5.1)
- Regularly check the hydraulic system of the expansion mechanism
- Establish axis state conversion operation SOP
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