Hydraulic Shock Absorber Test Bench
Category：Torsion Testing Machine
Introduction
The Hydraulic Shock Absorber Test Bench is mainly used to test the performance of various types of hydraulic shock absorbers used in railway passenger cars and locomotives. It can evaluate whether the hydraulic shock absorber meets the specified requirements and determine product qualification.The test bench is suitable for testing hydraulic shock absorbers used in all types of large track maintenance machines and rail vehicles, including vertical hydraulic dampers and lateral hydraulic dampers. It is capable of measuring the relevant performance data of hydraulic shock absorbers under high-speed and high-frequency operating conditions, including the force-displacement (F-S) characteristic curve and force-velocity (F-V) characteristic curve of unloading force (damping force).The system features high-precision hydraulic loading, automatic control, and real-time data acquisition and analysis functions, providing reliable testing results for product quality inspection, maintenance, and research applications.
Standards
The Hydraulic Shock Absorber Test Bench complies with the following standards:
TB/T 2229-2004 — Technical Conditions for Test Bench of Hydraulic Shock Absorbers for Railway Locomotives and Rolling Stock
TB/T 1491-2015 — Technical Conditions for Hydraulic Shock Absorbers for Railway Locomotives and Rolling Stock
Maintenance Management Regulations for Diesel and Electric Locomotives
Applications
Railway Passenger Car Shock Absorber Testing
Performance verification of hydraulic dampers used in passenger railway vehicles.
Locomotive Maintenance and Inspection
Testing damping performance and service condition of locomotive hydraulic shock absorbers.
Large Track Maintenance Machinery
Testing vertical and lateral hydraulic dampers installed on track maintenance equipment.
Rail Vehicle Component Manufacturers
Quality inspection, product development, and performance evaluation of hydraulic shock absorbers.
Railway Research Institutes and Testing Laboratories
Conducting dynamic performance analysis and reliability testing.
Technical Specifications
| Item | Specification |
|---|---|
| Vertical Test Speed | 0.01–0.5 m/s |
| Lateral Test Speed | 0.01–0.5 m/s |
| Maximum Test Frequency | 10 Hz |
| Maximum Test Force | 20 kN |
| Amplitude | ±30 mm (Total 60 mm) |
| Vertical Installation Stroke | 100–700 mm |
| Lateral Installation Stroke | 100–1200 mm |
| Maximum Vertical Test Force | 20 kN |
| Maximum Lateral Test Force | 20 kN |
| Force Sensor Accuracy | 0.05% FS |
| Displacement Sensor Accuracy | 0.1% FS |
| Installation Method | Floor-standing type, no foundation required |
| Power Supply | Three-phase five-wire system, AC 380 V, 50 Hz, 13 kVA |
Measurement and Control System Specifications
| Item | Specification |
|---|---|
| Lateral Tension/Compression Force Measurement | Measuring range: ±20 kN; Accuracy: ±100 N |
| Longitudinal Tension/Compression Force Measurement | Measuring range: ±20 kN; Accuracy: ±100 N |
| Piston Extension and Compression Stroke Measurement | Measuring range: 0–60 mm; Accuracy: ±0.2 mm |
| Test System Frequency | 0.1–60 Hz; Accuracy: 0.1 Hz |
| Shock Absorber Motion Speed Measurement | Accuracy: 0.01 m/s |
| Shock Absorber Asymmetry Ratio Measurement | Accuracy: 0.01% |
| Protection Functions | Equipped with overload, short-circuit, and phase-loss protection functions for motor safety protection |
Features
High-Speed and High-Frequency Dynamic Testing
Simulates actual operating conditions of railway vehicles.
Tests shock absorber performance under high-speed reciprocating loads.
Accurate Damping Performance Measurement
Measures damping force (unloading force) characteristics.
Automatically generates Force-Displacement (F-S) and Force-Velocity (F-V) characteristic curves.
Wide Compatibility
Suitable for various types of railway hydraulic dampers, including vertical and lateral dampers.
Supports multiple models of locomotive and railway vehicle shock absorbers.
High-Precision Hydraulic System
Provides stable loading force and precise control of test parameters.
Ensures reliable and repeatable test results.
Automatic Data Acquisition and Analysis
Real-time collection of force, displacement, and velocity data.
Automatic processing and analysis of test results.
Compliance with Railway Standards
Designed according to railway industry testing requirements.
Suitable for factory inspection, maintenance testing, and research applications.
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