→This machine is designed as standard ISO18137, applicable to leaf springs for road vehicle or other vehicle.
→The load is applied through V-type pressing fixture. First apply the load to the maximum test load gradually, then unload to zero. Repeat above step again, then record the load and corresponding deflection, draw load-deflection curve.
→An inspection of mass production line allow the management on the pressurization load, rapping the spring with a soft mallet can be used to eliminate internal friction.
→300kN leaf springs stiffness testing machine is designed as C-type structure, consisting of floor model loading frame, axis pin, bearing fixture, carriages, V-type pressing fixture.
→Standards: ISO18137 Leaf Springs-Technical Specifications, ISO683-14Heat-treatable steels, alloy steels and free-cutting steels -- Part 14: Hot-rolled steels for quenched and tempered springs, GB/T23925 Tri-wheel vehicles and low-speed goods vehicles-leaf spring, JB/T11222 Low-speed vehicles-Test methods for reliability of leaf spring assembly.
→Key words: stiffness rate, load-deformation curve, leaf springs, multi-leaf springs, camber, flank bending, multi-leaf spring with one eye and one sliding end, multi-leaf spring with eyes, single leaf parabolic spring with eyes, multi-leaf parabolic spring with eyes, parabolic spring with one eye and one sliding end, multi-leaf spring with sliding ends, parabolic spring with sliding ends, two-stage progressive multi-leaf spring with helper spring, two-stage progressive parabolic spring with helper spring, two-stage rate parabolic spring with auxiliary spring, progressive (rate) spring, perpendicularity and parallelism of the spring eye.
If necessary, please check details as follows: http://www.hrjtest.com/content/?691.html