Method for designing length of straight section at end of high-speed rail driving motor hanging plate spring

A technology for driving motor and hanging plate, which is applied in the fields of electrical digital data processing, instruments, geometric CAD, etc., can solve the problems of not giving accurate and reliable high-speed rail driving motor hanging plate spring end straight section length, not considering and so on

Pending Publication Date: 2020-03-27
于曰伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calculation and design of the stiffness of the small parabolic leaf spring with variable cross-section did not consider the cross-sectional shape and the influence of the coordinate translation of the parabola segment. Design method of straight section length

Method used

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  • Method for designing length of straight section at end of high-speed rail driving motor hanging plate spring
  • Method for designing length of straight section at end of high-speed rail driving motor hanging plate spring
  • Method for designing length of straight section at end of high-speed rail driving motor hanging plate spring

Examples

Experimental program
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Effect test

example 1

[0051] Example 1: It is known that the two ends of the cross-section of a leaf spring suspended by a high-speed rail drive motor are semicircular arcs, the width B=80mm, the elastic modulus E=206GPa, and the thickness h of the straight section at the root of the leaf spring 2 = 20mm, the thickness h of the straight section at the end 1 =8mm, the thickness ratio of the parabola segment β=h 1 / h 2 = 0.4; the effective length L of the hanging leaf spring = 550mm, the length L of the straight section at the root 2 =50mm, the length L from the root of the parabola segment to the end point of the leaf spring 2p =L-L 2 = 500mm. The design requirement value K of the lateral stiffness of the leaf spring for the drive motor of the high-speed rail y = 110.32 N / mm. According to the working length of the high-speed rail drive motor hanging leaf spring, the thickness and length of the straight section at the root, the thickness of the end straight section, the modulus of elasticity, a...

example 2

[0087] Example 2: It is known that the two ends of the cross-section of a leaf spring suspended by a high-speed rail drive motor are semicircular arcs, except for the thickness h of the straight section at the root 2 =21mm and lateral rigidity design requirement value K y =117.36N / mm, other structural parameters are exactly the same as those of Embodiment 1, that is, the thickness h of the flat section at the root of the leaf spring 2 =21mm, the thickness h of the straight section at the end 1 =8mm, the thickness ratio of the parabola segment β=h 1 / h 2 =0.381; the average thickness h of the parabola segment p =(h 1 + h 2 ) / 2=14.5mm. Using the design steps of Embodiment 1, the length of the end straight section, the length of the parabolic section and the thickness of the parabolic section at different positions of the high-speed rail drive motor hanging leaf spring are designed, namely:

[0088] (1) Calculation of the equivalent width of each segment of the high-speed ...

example 3

[0123] Example 3: It is known that the two ends of the cross-section of the suspension plate spring of a high-speed rail drive motor are chamfered, except for the cross-sectional shape and the design requirement value of lateral stiffness K y =125.2N / mm, other structural parameters are exactly the same as those of the second embodiment. That is, the thickness h of the straight section of the root 2 =21mm, the thickness h of the straight section at the end 1 =8mm, the thickness ratio of the parabola segment β=h 1 / h 2 =0.381, the average thickness h of the parabola segment p =(h 1 + h 2 ) / 2=14.5mm; the ratio of the chamfer radius to the thickness of the straight section at the root k r2 = r 2 / h 2 = 1 / 5, the ratio of the chamfer radius to the thickness of the straight section at the end k r1 = r 1 / h 1 = 1 / 5, the ratio k of the average chamfer radius and thickness of the parabola segment rp = r p / h p = 1 / 5. According to the function length of the high-speed rail...

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Abstract

The invention discloses a method for designing the length of a straight section at the end of a high-speed rail driving motor hanging plate spring, and belongs to the technical field of high-speed rail driving motor hanging plate springs. The method design the length of the end straight section, the length of the parabola section and the thickness of the parabola section at different positions ofthe high-speed rail driving motor hanging plate spring according to the acting length of the hanging plate spring of the high-speed rail driving motor, the thickness and the length of the root straight section, the thickness of the end straight section, the elasticity modulus and the transverse rigidity of the end straight section, under the condition that the cross section shape of the high-speedrail driving motor hanging plate spring and the coordinate origin offset of the parabola section are considered. Known from prototype test, the method for designing the length of the straight sectionat the end of the high-speed rail driving motor hanging plate spring is correct, and the accurate and reliable length of the straight section at the end, the length of the parabola section and the design value of the thickness of the parabola section at different positions can be obtained, it is guaranteed that the transverse rigidity meets the design requirement, and the product design level andreliability are improved.

Description

technical field [0001] The invention relates to a high-speed rail drive motor hanging leaf spring, in particular to a design method for the length of a straight section at the end of the high-speed rail driving motor hanging leaf spring. Background technique [0002] With the continuous improvement of high-speed rail driving speed, driving stability and safety, higher requirements are put forward for the calculation and design of the lateral stiffness of the high-speed rail drive motor suspension leaf spring. The two ends of the suspension leaf spring section of the high-speed rail drive motor actually used can be divided into semicircle arcs or chamfers, and the coordinate origin of the parabola segment mostly does not coincide with the center of the lifting lug at the end of the suspension leaf spring, that is, the parabola segment Most of them have coordinate translation. The lateral stiffness of the leaf spring hanging from the drive motor of the high-speed rail is not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F119/14
Inventor 周殿买舒友苑师铭高永刚高新文周长城于曰伟李雪
Owner 于曰伟
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