A tapered anti-rolling torsion bar and its design and manufacturing method

Abstract

The invention discloses a tapered anti-side-roll bending torsion bar and a designing and manufacturing method thereof. The tapered anti-side-roll bending torsion bar comprises a middle segment, bent segments and tapered segments located between the middle segment and the bent segments; the diameter of each tapered segment is gradually decreased from the end close to the corresponding bent segment to the end close to the middle segment. The designing and manufacturing method of the tapered anti-side-roll bending torsion bar comprises the steps of discharging, rough machining, double-head bending, heat treating, two-head finish machining and polishing, wherein the tapered segments are machined on a round steel bar according to predesigned and predetermined values before the equal-diameter round steel rod is bent. Accordingly, by designing a tapered structure, light weight of the product is achieved while the system stiffness and strength of the product are met, and a series of problems that a traditional bent torsion bar is overdesigned, interference and overweight are prone to occur, and assembling, paint spraying and rotating are inconvenient due to the large weight are solved.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicle safety. Background technique [0002] The vibration of the vehicle mainly has degrees of freedom in six directions: stretching vibration in the X direction, yaw vibration in the Y direction, ups and downs vibration in the Z direction, nodding vibration around the Y axis, shaking head vibration around the Z axis, and sideways vibration around the X axis. rolling vibration (as figure 1 shown). The current bogies of rail transit vehicles are all two-stage suspensions, and the anti-roll torsion bar device plays the role of adjusting the roll stiffness of the vehicle and controlling the roll vibration of the vehicle. [0003] The anti-rolling torsion bar device is installed between the rail vehicle body and the bogie. When the vehicle is rolling, it will provide the rolling stiffness required for the safe operation of the vehicle together with the secondary suspension of the vehicle, so ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a tapered anti-rolling torsion bar and its design and manufacturing method that can meet the requirements of product rigidity, strength and light weight at the same time, so as to solve the problem of inconvenient assembly and painting process due to the large weight of the traditional torsion bar question

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