Nonlinear stiffness eased-transition traction node and nonlinear stiffness control method thereof

A nonlinear and rigid technology, applied in springs, springs/shock absorbers, mechanical equipment, etc. made of plastic materials, can solve the problem of insufficient nonlinear stiffness to ease transition characteristics, and achieve small deflection and torsional stiffness, optimal The effect of riding comfort and improving service life

Inactive Publication Date: 2014-10-01
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The elastic element in the above-mentioned patent document D1 has obvious nonlinear characteristics of air stiffness, but its nonlinear stiffness relaxation and transition characteristics are insufficient

Method used

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  • Nonlinear stiffness eased-transition traction node and nonlinear stiffness control method thereof
  • Nonlinear stiffness eased-transition traction node and nonlinear stiffness control method thereof
  • Nonlinear stiffness eased-transition traction node and nonlinear stiffness control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: as Figure 3 to Figure 7As shown, a traction node with moderate transitional nonlinear stiffness includes a metal mandrel, a metal sheath 5 and a rubber elastic body 6, the metal mandrel includes a shaft body 41 and a flange 42 arranged in the middle of the shaft body 41, The rubber elastic body 6 is arranged between the metal mandrel flange 42 and the metal jacket 5, and the traction node forms a real direction X and a space direction Y along its radial direction (the space direction Y is the working direction), and The real direction X and the empty direction Y are perpendicular to each other; along the real direction X, the metal mandrel flange 42, the rubber elastic body 6 and the metal jacket 5 are bonded to form a real structure, and along the empty direction Y, the rubber elastic body 6 is provided with a space 61 symmetrical to the axis of the metal mandrel 7, and the metal mandrel flange 42 is a prism whose bottom surface 45 is a parallelogram, an...

Embodiment 2

[0045] Embodiment 2: as Figure 9 with Figure 10 As shown, compared with Example 1, the difference is that: along the real direction X, on the inner wall of the metal jacket 5, a real direction groove 52 symmetrical to the axis of the metal mandrel is provided, and the rubber elastic body The outer surface and the inner surface of 6 match with the inner wall surface of the metal jacket 5 and the outer surface of the metal mandrel flange 42 respectively.

[0046] When the traction joint is vulcanized and formed, the metal mandrel, the metal jacket and the elastic rubber body are formed into a whole through vulcanization, and the vulcanized body is subjected to radial extrusion and then secondary finishing to form a finished product. After the radial extrusion, since the rubber of the elastic rubber body along the empty direction Y is less than that along the real direction X and has gaps, the reaction force of the rubber elastic body due to radial extrusion is in the air dire...

Embodiment 3

[0049] Embodiment 3: as Figure 11 to Figure 13 As shown, compared with Example 2, the difference is that a pair of opposite rounded corners of the parallelogram prism in the air direction Y are provided with a radian 8 in the axial direction of the metal core axis, and the opposite The arc of the rounded corners is symmetrical about the axis of the metal mandrel, that is, a pair of opposite rounded corners of the flange of the metal mandrel in the air direction Y are arc-shaped in the axial direction of the metal mandrel, and the opposite arc-shaped circles The angular parts are symmetrical about the axis of the metal mandrel.

[0050] In order to reduce the deflection stiffness when the traction node is working, in this embodiment, a pair of opposite rounded corners of the parallelogram prism in the space direction X are designed as rounded corners 9 with radians along the axial direction of the metal mandrel. This radian makes the free surface of the rubber body greatly in...

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Abstract

The invention discloses a nonlinear stiffness eased-transition traction node and a nonlinear stiffness control method thereof. The nonlinear stiffness eased-transition traction node comprises a metal core shaft, a metal outer sleeve and a rubber elastomer; the metal core shaft comprises a shaft body and a flange; the flange of the metal core shaft is a prism with one bottom surface which is a parallelogram; four corner angles of the parallelogram prism are in a state that the four corner angles are mutually perpendicular pairwise; the two pairs of corner angles are located in the virtual direction and the real direction respectively; the opposite corner angles of the parallelogram prism along the virtual direction and the real direction are arranged into circular corner angles; virtual direction grooves which are symmetrical relative to the axis of the metal outer sleeve are formed in the inner wall of the metal outer sleeve along the virtual direction; each virtual direction groove comprises an arc-shaped virtual direction groove bottom edge and virtual direction groove straight edges which are formed on the bilateral sides respectively. The nonlinear stiffness eased-transition traction node is obvious in radial stiffness nonlinearity characteristic and nonlinear stiffness eased transition characteristic and accordingly the problem that the traction node is oval is solved. The high running speed and the good riding comfort of rail vehicles can be further ensured by the nonlinear stiffness control method.

Description

technical field [0001] The invention relates to a traction node and a method for controlling nonlinear stiffness thereof, in particular to a traction node with moderate transition nonlinear stiffness and a method for controlling nonlinear stiffness thereof, and belongs to the technical field of elastic elements. Background technique [0002] Rubber joint is a commonly used elastic element, which has good vibration damping characteristics and flexible connection, and is widely used in various engineering fields, especially in the modern rail vehicle bogie suspension system. [0003] The traction node is a common rubber node, which is used in the vehicle bogie suspension system and is one of the key components to achieve vehicle traction or braking stability and ensure vehicle dynamic comfort. Such as figure 1 As shown, the traction node 1 is installed on both ends of the traction rod 2 respectively. The traction node 1 at one end of the drawbar 2 is fixedly connected with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/38
Inventor 张春良张玉祥冯万盛
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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