A frame strength test device based on a center pin loading mechanism

Abstract

The invention relates to a frame strength test device based on a center pin loading mechanism, belonging to the field of a force loading device for frame strength tests of railway vehicle bogies. Theframe strength test device based on a center pin loading mechanism comprises a simulation center pin loading mechanism, a universal spherical bearing, a transverse stop spherical bearing, two stop seat rubber pads, two force-measuring type traction rods, two transverse force loading actuators and a longitudinal counter-force rod, wherein the simulation center pin loading mechanism comprises a tubular core barrel, a force-measuring traction rod seat, a transverse force symmetrical slope surface loading seat, a counter-force rod loading hinge shaft seat and a transverse stop spherical bearing. The device has the advantages of exquisite structure, compact layout and easy assembly, operation and maintenance; the device can not only avoid the problems of component blocking interference and large time lag error of a load cell, but also greatly save the manufacturing cost, increase the test precision and improve the production efficiency.

Description

technical field [0001] The invention belongs to the field of force loading devices for railway vehicle bogie frame strength tests, and in particular relates to a frame strength test device based on a central pin loading mechanism. Background technique [0002] Since the bogie frame of a railway vehicle is the core component that bears the weight of the car body and transmits traction and braking power, after the theoretical design is completed, it is usually necessary to carry out a load strength test on the bogie frame of the initial production. When carrying out the load-bearing test on the key structure of the frame, it is usually necessary to apply force along the Z-axis vertical, X-axis transverse and Y-axis longitudinal directions of the frame at the same time, so as to continuously simulate the train's on-rail operating environment. Comprehensive force environment, so as to test the rationality of the mechanical structure of the bogie frame, by obtaining the dynamic f...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the X-axis lateral force loading device and the Y-axis longitudinal force loading device of the existing force-applying device for strength testing are designed separately and connected separately, the loading device occupies a large space and the manufacturing cost is high. ; The X-axis lateral force loading device with a large longitudinal span will cause the force state of the two lateral stoppers to be out of sync, and cause the problem of inaccurate mechanical load data; and there is no pressure transmission on the existing two traction rods. sense, therefore, the technical problem of whether the force balance of the two traction rod seats cannot be monitored, the invention provides a frame strength test device based on the center pin loading mechanism

Images