TB/T 2460-2016 in English
VALIDRailway car piston retarder
- Issued on:2016-08-16
- Implemented on:2017-02-16
- File Format:PDF
- Delivery:Via email within 1~3 business days
$311.00
| Standard No: | TB/T 2460-2016 |
| Document status: | VALID |
| Title in English: | Railway car piston retarder |
| Title in Chinese: | 铁道车辆减速顶 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-08-16 |
| Implemented on: | 2017-02-16 |
| Superseding: |
TB/T 2460-2009 Railway Car Piston Retarder
|
| Professional Classification: | TB-Railway Transport |
| Related Keywords: | durability test requirements
durability test add test benchmark durability requirements none performance retention railway car piston retarder introduction background new test equipment |
| Related Topics: | tb/t 1961-2016
tb/t3441-2016 tb/t3367-2016 tb/t2993.5-2016 tb/t3440-2016 tb/t 3466-2016 tb/t 3432-2016 |
Introduction
Background of Standard Revision and Technological Evolution
TB/T 2460-2016, as the latest industry standard for railway vehicle retarder, replaces the 2009 edition of the standard. This revision mainly responds to the following technological development needs:
- Material technology progress: New low-temperature performance requirements for hydraulic oil pour point (≤-15℃) and freezing point (≤-18℃)
- Test method optimization: Introduce new detection methods such as straight-track simulation test bench
- Reliability improvement: Add 80,000 rounds of durability test requirements, and delete the original seal life indicator
Core parameter comparison analysis
| Technical indicators | TB/T 2460-2009 | TB/T 2460-2016 | Range of change |
|---|---|---|---|
| Critical speed deviation (≤1.25m/s) | Grade requirements | Uniformly set to ±0.14m/s | Simplified classification |
| Braking work (inside) | Undefined height benchmark | ≥850J (58mm stroke) | Add test benchmark |
| Durability requirements | None | Performance retention for 80,000 cycles | Add key indicators |
Technical requirements for key components
Sliding cylinder assembly
As a core brake component, the new standard requires:
- No coating peeling (Clause 5.12)
- Middle outer diameter wear ≤0.09mm (durability test)
- No bubbles in inverted seal test (Clause 5.6)
Shell
Installation support components must meet the following requirements:
- Inner diameter wear ≤0.50mm (Clause 10.10.c)
- Red painting is prohibited (Clause 5.11)
- Gap requirements: 2-8mm on the inside, 1-4mm on the outside (Clause 5.15)
Test method innovation
The 2016 version of the standard significantly improved the detection system:
New test equipment
Added a straight-track simulation test bench (Clause 6.1.1.2), with the following requirements:
- Wheel weight ≥ 5t (Clause 6.1.2.1.2)
- Speed fluctuation < 3% (Clause 6.1.2.4.2)
Critical speed calculation formula
Introduced precise calculation model (Clause 6.1.4):
Δuh = ush - uz (upper deviation) Δuz = uz - uxl (lower deviation) uz = (ush + uxl)/2 (median value)
Implementation suggestions
- Model matching: Select the critical speed nominal value according to the line conditions (1.25-5.0m/s optional)
- Installation specification: Ensure the inner installation height tolerance of ±1mm (6.1.2.3 clause)
- Maintenance cycle: It is recommended to check the wear of the sliding cylinder every 50,000 cycles
- Winter protection: In cold areas, hydraulic oil with a pour point 15°C lower than the ambient temperature should be used
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