Study of the deformation characteristics of the pneumatic spring of the high-speed rolling stock of railways within the cross section of the turnout

Investigation of the deformation features of the pneumatic spring of high-speed rolling stock of railways within the frog of the railroad switch. The study object is a pneumatic spring of high-speed rolling stock of the railway. The method of experimental testing of a pneumatic spring using the developed installation for running dynamic spring tests is presented. Experimental tests of the deformability of the pneumatic spring, when the test unit moves along the frog of the railroad switch, are carried out. It is established that the transition of the wheel from the wing rails to the frog and from the core to the frog's moustache, like the frog's rear joint, has a significant impact on the vertical and horizontal deformations of the pneumatic spring. It is determined that the maximum deformations in the vertical plane when the wheel moves from the wing rails to the frog are 2,75 mm; when the wheel moves from the frog to the wing rails, they are 3.7 mm; when the installation passes through the rear joint of the frog, the value of vertical deformations of the pneumatic spring is 6,2 mm. At the same time, the horizontal deformations of the pneumatic spring are 1,0 mm, 1,2 mm and 0,58 mm, respectively. Establishing the deformation features of the pneumatic spring of high-speed railway rolling stock when driving on a railroad switch is an urgent task of scientific research. Since this will make it possible to determine dynamic and safety indicators of high-speed rolling stock in operational conditions.