Spring Test Press NST Nencki Ltd Railway Technology

Spring Test Press NST Nencki Ltd Railway Technology · www. nencki. ch

Why Spring Testing is important? Which springs and criteria can be tested? Main components of the Nencki spring test press Mechanical components Hard- and software Why transversal tests are so important? Metallastic spring testing Leaf spring testing Why the Nencki spring test press is the best solution for you? Nencki Ltd Railway Technology · www. nencki. ch

Q Y The two forces which are influencing the derailing index Nencki Ltd Railway Technology · www. nencki. ch

What is measured with the spring test press NST? Axial stiffness Q Y Transversal stiffness Nencki Ltd Railway Technology · www. nencki. ch

Helicoil springs Test features: • Axial stiffness • Reference length • Force/deflection diagram • Bowing angle (free transversal deflection) • Bowing direction • Bowing force • Transversal stiffness Nencki Ltd Railway Technology · www. nencki. ch

Metalastic and conical springs Test features: • Axial stiffness • Reference length • Force/deflection diagram Nencki Ltd Railway Technology · www. nencki. ch

Leaf springs • Axial stiffness • Reference height Nencki Ltd Railway Technology · www. nencki. ch

Vertical load cylinder Industrial PC with printer Front door Nencki Ltd Railway Technology · www. nencki. ch Hydraulic unit

Vertical load cylinder Rigid 2 -column guide Axial load cells Top format part Bottom format part Transversal load cell Compound table for transversal test Extended guides to withdraw the compound table to allow loading by crane Nencki Ltd Railway Technology · www. nencki. ch

Micro filter Oil cooler Nencki Ltd Railway Technology · www. nencki. ch Proportional valves overload valve Oil level and temp. control

Stroke measuring system integrated in hydraulic cylinder Load cells - 3 cells for axial load measuring - OIML precision class 3 - Total nominal load 300 k. N Nencki Ltd Railway Technology · www. nencki. ch

Compound table with integrated movement measuring in X and Y Precise linear guides Hydraulic cylinder For transversal stiffness test Transversal load cell for measuring of the transversal force /stiffness Nencki Ltd Railway Technology · www. nencki. ch

Heavy springs can be loaded by crane onto the extendable compound table Nencki Ltd Railway Technology · www. nencki. ch

Bottom format part Top format part 1 format part for 2 different springs Spring A centered on outer diameter Spring B centered on inner diameter Nencki Ltd Railway Technology · www. nencki. ch

Industrial computer • The fastest version available • 17“ touch screen • All software basing on Windows XP technology • Lockable • A 4 Laser printer USV Nencki Ltd Railway Technology · www. nencki. ch

F orce k. N S troke mm k. N mm Nencki Ltd Railway Technology · www. nencki. ch

The control centre of the machine Visualisation of transversal measuring values Bowing direction and angle Nencki Ltd Railway Technology · www. nencki. ch

Data bases Springs with parameters programs Easy programing Thanks to integrated program editor you can crate easily and fast new programs Nencki Ltd Railway Technology · www. nencki. ch

A 4 report printer Included in our scope of supply Report editor With a few mouse clicks you can create a new design Nencki Ltd Railway Technology · www. nencki. ch

Transversal tests: Why? Each helicoil spring does bow side-wards under load application Nencki Ltd Railway Technology · www. nencki. ch

Transversal tests: Why? In this example the springs are bowing under load all towards the same bogie side. Q Y Very bad influence regarding the derailing index Nencki Ltd Railway Technology · www. nencki. ch

PC controlled All test parameters and test result are stored, report can be printed Nencki Ltd Railway Technology · www. nencki. ch

Marking of the bowing Nencki Ltd Railway Technology · www. nencki. ch

In this example the bowing of the springs has been measured. Springs with similar characteristics are matched, so that lateral forces are neutralized Nencki Ltd Railway Technology · www. nencki. ch

x In this example the lateral movement of the springs influences the axle distance. The bogie will have the tendency to drive to the left side. Bad running characteristics -> noise, vibrations, wear -> costs Nencki Ltd Railway Technology · www. nencki. ch

Transversal spring helps: • To improve the running characteristics • To reduce the derailing risk • To reduce vibrations • To reduce noise • To control the quality of your spring supplier • To reduce life cycle costs of wheels and rails Transversal spring test is a must for: • High speed trains • Metros Nencki Ltd Railway Technology · www. nencki. ch

Metalastic spring testing Nencki Ltd Railway Technology · www. nencki. ch

Testing of leaf springs Spring guiding table Load application cylinder with load measuring cell and vertical stroke measuring Fixing bolt Linear bearing guide Nencki Ltd Railway Technology · www. nencki. ch

What can be tested with the machine? • Vertical load • Vertical stroke • Stiffness vertical • Hysteresis Nencki Ltd Railway Technology · www. nencki. ch

Special application Testing and height Adjustment of complete Primary suspension Nencki Ltd Railway Technology · www. nencki. ch

• Made for railway applications • Fully computer controlled • Ergonomic working conditions • Robust design Nencki Ltd Railway Technology · www. nencki. ch

Address: Nencki Ltd Gaswerkstrasse 27 4901 Langenthal Switzerland Tel. +41 62 919 93 93 Fax+41 62 919 93 90 www. nencki. ch/railway@nencki. ch Nencki Ltd Railway Technology · www. nencki. ch