Tie rod joint assembly and its design method

Abstract

The invention discloses a pull rod node assembly and a design method thereof. The pull rod node assembly comprises a pull rod and a node pressed into the pull rod; the node is composed of a core shaftand rubber bonded to the core shaft in a vulcanized mode. The node is characterized in that a part, matched with the pull rod, of the node is divided into three sections, wherein a stop section is located in the middle and has a stop function, and symmetrical sections are arranged on the left side and the right side of the stop section in a mirror symmetry mode; the core shaft diameter of the stop section is larger than that of the symmetrical sections, the rubber thickness of the stop section is smaller than that of the symmetrical sections, the rubber of the stop section is in a free state,and the rubber of the symmetrical sections is in a pre-compression state. Comfortable performance is improved, rigidity requirements under large loads and damping requirements and bearing requirements of the node under different lines are met, fatigue life of products is prolonged, and safety of vehicle operation is guaranteed.

Description

technical field [0001] The invention relates to a tie rod node assembly and a design method thereof, belonging to the technical field of tie rod nodes for rail vehicles. Background technique [0002] Maglev train is a kind of high-tech transportation that uses magnetic pole attraction and repulsion to operate. Because of its fast running speed, smooth and comfortable running, easy control, low noise, high environmental protection performance, low operation, maintenance and energy consumption costs, etc. The advantages are more and more valued by countries all over the world. [0003] The medium and low speed maglev train bogie is the most critical component in the whole vehicle. It supports the weight of the whole vehicle and transmits the traction and braking force. The force condition is very complicated, and its operation condition is directly related to the operation safety of the whole vehicle. Therefore, it must be It was subjected to finite element analysis and fatig...

AI Technical Summary

Problems solved by technology

[0006] 1. The stiffness of the node changes under heavy loads, which cannot meet the stiffness requirements under heavy loads

[0007] 2. The initial axial stiffness, radial stiffness and initial stress of the nodes cannot be adjusted according to the bearing requirements of different lines

[0008] 3. The deflection stiffness after the node is installed is too large, and the deflection stiffness cannot be adjusted according to different line stiffness requirements

[0009] The above defects cause the transverse tie rod nodes in the prior art to have short fatigue life under heavy load conditions, and the stiffness changes during the loading process are small, which cannot meet the nonlinear stiffness requirements under heavy loads.

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