A spring-biased pivot arm positioning primary suspension assembly

Abstract

The invention discloses a spring-biased pivoting arm positioning primary suspension assembly, which includes a frame, an axle box, a primary spring mechanism and a pivoting arm positioning rubber joint, and the frame is provided with a spring for connecting with the primary spring mechanism Plate, one end of the spring in the spring mechanism used to connect with the spring plate is fixedly provided with a top positioning plate, and the top positioning plate is provided with a raised positioning ring and bolt holes for fixed connection with the spring plate, and the spring plate A positioning through hole for the positioning ring to pass through is provided on the top, and a positioning groove adapted to the positioning ring is provided at the position corresponding to the frame and the positioning through hole. The spring positioning method provided in the present invention is more reliable, and through the mutual cooperation of the positioning ring on the top of the spring and the positioning groove provided on the frame, the spring can be effectively prevented from moving in the horizontal and vertical directions, so the spring plate will not be affected by the spring. Driven to produce horizontal and vertical movement, thus effectively avoiding warping of the spring plate.

Description

technical field [0001] The invention relates to the technical field of rail vehicle bogies, in particular to a spring-biased pivot arm positioning primary suspension assembly. Background technique [0002] In the way that the wheel set adopts the pivot arm positioning, the traditional way is to set the coil spring directly above the center of the axle box. This setting method is called the spring mid-position pivot arm positioning. The characteristic of the spring mid-position pivot arm positioning is that the bogie The pivot arm positioning rubber joint can not directly bear the vertical force, but in this positioning method, a series of coil springs will occupy more space in the vertical direction, which is not conducive to the reduction of the height of the frame side beam; in order to solve this problem , the helical spring can be set at a certain distance from the axial center, which is called spring-biased arm positioning. [0003] Figure 9 shows the structure of the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a spring-biased pivoting arm positioning primary suspension assembly, so as to solve the problem that the spring plate in the spring biasing pivoting arm positioning primary suspension assembly is easy to warp, thereby reducing a Maintenance cost of suspension assembly

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