I. Overview of Railway Elastic Tie Fastener Fatigue Test Machine

1. Usage Features:

PMW-400-500 model electro-hydraulic railway tie fastener fatigue tester, mainly used for dynamic pulsation fatigue tests of railway tie fastener assembly, also applicable to railway locomotive axle fatigue tests, railway rail fatigue tests, and static compression tests and unidirectional dynamic pulsation fatigue tests for various large components such as concrete structural elements, steel rails and their welded joints, bridges, various trusses, car undercarriages, front and rear axles of cars, locomotive bogies, and various large components. It is a widely used, reliable, and cost-effective fatigue life testing and detection system in the fields of transportation and rail. The PMW series electro-hydraulic pulsation fatigue tester utilizes a unique crank and connecting rod oscillating rod mechanism to achieve sinusoidal wave loading on the tested items, featuring the best energy-saving design, which consumes only one-twentieth of the energy of similar electro-hydraulic servo fatigue testers!

2. Rail Tie Fastener Fatigue Tester Reference Standard:

2.1 European Standard EN13146-4: Railway Applications — Rails — Fastening Systems — Test Methods — Part 4: Effects of Repeated Loading

2.2 "Temporary Technical Conditions for Fast Passenger Line Fastening System of the Ministry of Railways of the People's Republic of China"

3. Main Components of the Rail Fastener Testing Machine:

This testing system consists of a 400ml/min hydraulic reciprocating pump (comprising the main unit and controller), a 500KN hydraulic actuator, a gantry testing loading frame system, specialized auxiliary tools for rail fasteners, a computer-based data collection and processing system, as well as various accessories.

Section 2: Main Technical Parameters of the Rail Fastener Fatigue Testing Machine

1. Main Unit (Pulsator Maximum Displacement: 400ml)

2. Maximum dynamic test force: 500 kN

3. Maximum static test force: 500kN, indication accuracy ±1% (relative error from 20% FS indication value);

4. Operating Frequency Range: 2-8 Hz (adjustable continuously)

5. Maximum pulse volume: 400ml per time

6. Basic Parameters of the 500kN Actuator:

6.1 Maximum Amplitude: 15mm

6.2 Maximum piston stroke: 120mm

6.3 Maximum Lead Screw Extension: 450mm

6.4 Extended Tube Length: 500mm, 1000mm

6.5 Full-scale Display Value of Computer: 9999.9

6.6 Additional actuators (special accessories) in specifications of 25kN, 50kN, 100kN, 250kN, etc.

7. Motor Power: 11 kW.