A variable stiffness hourglass spring and its method

Active Publication Date: 2021-10-01
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its structure lacks variable stiffness, and the rubber body is prone to fatigue under large loads, resulting in cracks

Method used

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  • A variable stiffness hourglass spring and its method
  • A variable stiffness hourglass spring and its method
  • A variable stiffness hourglass spring and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the hourglass spring includes a rubber body 1, a support rod 2, a foot 3 and an upper end plate 4. There is a cavity vertically penetrating the rubber body 1 on the rubber body 1, and the support rod 2 is embedded in the rubber body 1 in a lateral distribution manner. of the middle. The outer sides of the rubber bodies 1 on both sides of the support rod 2 are provided with outer concave holes 11 , and the rubber bodies 1 on both sides of the outer concave holes 11 are provided with outer concave arc surfaces 12 . The inner side of the rubber body 1 is provided with an inner concave arc surface 13 and an inner convex arc surface 14, and the upper end surface 15 is embedded in the top of the rubber body 1, and the lower end of the rubber body 1 is provided with a leg 3.

[0027] The top and bottom of the rubber body 1 of the hourglass spring are also provided with mounting bases, which are not shown in the figure. When the rubber body 1 of the ...

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Abstract

A variable stiffness hourglass spring, including a rubber body and a support rod. The rubber body has a cavity vertically penetrating the rubber body. The support rod is embedded in the middle of the rubber body, and the upper end plate is embedded in the upper end of the rubber body. The outside of the rubber body is provided with an outer concave hole, and the outer concave hole includes a concave arc surface and a straight surface, and the straight surface is set on the side close to the support rod, and the concave arc surface is set on the side away from the support rod; The concave arc surface is an arc surface which is sunken to the inside of the rubber body, and one end of the concave arc surface is connected with one end of the straight surface. By setting the rubber body of the hourglass spring into a rubber body composed of multi-segment arcs similar to bat wings, the gradual contact of the segmented arcs under different vertical load conditions is realized, thereby realizing the vertical variable stiffness of the product. It effectively improves the non-linearity of the vertical stiffness of the product, improves the vertical bearing capacity of the product, and improves the reliability of the product under relatively large vertical load conditions.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a variable stiffness of a rubber spring of a secondary suspension system. Background technique [0002] The hourglass-shaped rubber spring is referred to as the hourglass spring, which has the characteristics of simple structure, light weight, and large vertical, horizontal, and longitudinal deformations. It is gradually used in the secondary suspension system of urban rail vehicles. Under the condition of large vertical load, because the vehicle runs on the track, it will be accompanied by various vibrations and impacts. The vertical bearing capacity of the existing hourglass spring is insufficient. If the rigidity is changed, the product is easily damaged and cracked. [0003] Although some laterally distributed metal bodies can be added to the rubber body of the existing hourglass spring to increase the vertical stiffness of the hourglass spring, in this way, the vertical b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/371
CPCF16F1/371
Inventor 李刚孙海燕兰加标林胜谭方杨哲李东阁於珂睿曾慧
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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