The pneumatic ball valve applied to the locomotive is mainly used to bear the compression stress, shear stress and torsional moment, as well as two or more stress combinations. All kinds of pneumatic ball valves have certain special performance and play an important role in each other. The speed of the railway locomotive is constantly increasing, and the dynamic effect on the line is sharply increasing, causing severe wear of the line, tire and components of the running part of the locomotive. Therefore, the application of pneumatic ball valve is more and more popular.
(1) The shape can be freely determined, and the hardness can be controlled by adjusting the composition of the formula, which can meet the requirements for stiffness and strength in all directions;
(2) The internal friction is large and the valve effect is good, which is beneficial to cross the resonance area and attenuate high-frequency vibration and noise;
(3) The elastic modulus is much smaller than that of metal, which can produce large elastic deformation;
(4) No sliding part, easy to maintain;
(5) Small quality, easy installation and disassembly.
(6) The impact stiffness is higher than the static stiffness and dynamic stiffness, which is conducive to impact deformation.