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A bogie nonlinear variable stiffness rubber pile and a method for nonlinearly variable stiffness of the rubber pile

A rubber stack and non-linear technology, which is applied in the field of rail transit, can solve the problems of significantly enhanced response, the inability to realize the lateral stiffness of the rubber stack, and the inability to achieve lateral nonlinear rigidity.

Active Publication Date: 2020-12-15
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is: the existing rubber pile cannot realize the problem of lateral nonlinear rigidity when the train passes through curves with different radii and speeds, that is, the lateral force applied to the rubber pile by the car body increases. When it exceeds a certain range, the lateral stiffness of the rubber stack cannot achieve a significant increase in response

Method used

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  • A bogie nonlinear variable stiffness rubber pile and a method for nonlinearly variable stiffness of the rubber pile
  • A bogie nonlinear variable stiffness rubber pile and a method for nonlinearly variable stiffness of the rubber pile
  • A bogie nonlinear variable stiffness rubber pile and a method for nonlinearly variable stiffness of the rubber pile

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Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1- Shown in -4, a bogie non-linear variable stiffness rubber pile, on the rubber body of the rubber pile, there is a square tubular mounting hole 1 that runs through longitudinally, and a variable rigidity assembly 2 is housed in the mounting hole 1; the variable rigidity The assembly 2 includes an upper sliding block 3 and a lower sliding block 4 provided with a limit mechanism, and the upper sliding block 3 and the lower sliding block 4 are installed on the rubber body above the mounting hole 1 and the rubber body below the mounting hole 1 respectively. On the body; under the action of the limit mechanism, the upper sliding block 3 can slide relative to the lower sliding for a set distance, and the sliding distance is set according to the actual working conditions. The following of the upper sliding block 3 is the upper block sliding surface 31, and the top of the lower sliding block 4 is the lower block sliding surface 41; the upper block sliding surfa...

Embodiment 2

[0053] Figure 5 -shown in -8, a kind of bogie nonlinear variable stiffness rubber pile, its difference with embodiment one is: variable rigid assembly 2 has variable rigid assembly one 21 and variable rigid assembly two 22; In variable rigid assembly one 21 The difference between the width of the transverse change just stop groove 32 and the width of the transverse change just stop protrusion 42 is less than the difference between the width of the transverse change just stop groove 32 and the width of the transverse change just stop protrusion 42 in the second variable rigid assembly 22; Or, the difference between the width of the transverse change just stop groove 32 in the first variable stiffness assembly 21 and the width of the transverse change just stop protrusion 42 is greater than the width of the transverse change just stop groove 32 in the second rigid component 22 and the transverse change just stop The difference in width of the stopper 42;

[0054] There are two...

Embodiment 3

[0065] Such as Figure 9 , 10 As shown, a bogie nonlinear variable stiffness rubber pile differs from Embodiment 1 in that: the transversal rigid stopper protrusion 42 includes a base block 421 and a stop block 422 affixed to the base block 421; The lower block sliding surface 41 of the lower sliding block 4 is provided with a base groove 44; the base block 421 is inserted into the base groove 44 from one end of the base groove 44 and fixedly connected with the lower sliding block 4, and can be connected from the base Slot 44 exits.

[0066] In this embodiment, by replacing the stop protrusions with different widths, the user can conveniently adjust the force range of the rubber stack for linear and non-linear rigidification.

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Abstract

The invention discloses a bogie nonlinear variable-stiffness rubber-metal pad. A longitudinally-through square tubular mounting hole is formed in a rubber body of the rubber-metal pad, and a stiffnessvariation assembly is arranged in the mounting hole; the stiffness variation assembly comprises an upper sliding block and a lower sliding block which are provided with limiting mechanisms, and the upper sliding block and the lower sliding block are arranged on the rubber body above the mounting hole and the rubber body below the mounting hole respectively; under the action of the limiting mechanisms, the upper sliding block can slide on the lower sliding block in a set distance; the lower surface of the upper sliding block is an upper sliding surface, and the upper surface of the lower sliding block is a lower sliding surface; the upper sliding surface is attached to the lower sliding surface, and the upper sliding surface and the lower sliding surface can slide relative to each other under a heavy pressure. The bogie nonlinear variable-stiffness rubber-metal pad has the main advantages that when a train passes through curves with different radiuses at the same speed or curves with same radius at different speeds, the rubber-metal pad can automatically perform nonlinear stiffness variation so as to deal with different centrifugal force applied to a vehicle body.

Description

technical field [0001] The invention relates to a bogie nonlinear rigidity variable rubber stack and a rubber stack nonlinear rigidity variable method, belonging to the technical field of rail transportation. Background technique [0002] The rubber stack not only has a superior load-bearing function, but also has good vertical vibration damping, longitudinal vibration damping and lateral vibration damping functions. For many years, the secondary suspension of the freight locomotive bogie also uses rubber stacks to realize the bogie to locomotive. Body support and damping. [0003] The rubber stack is used for the secondary suspension of the train bogie. Previously, it mainly solved the vertical vibration reduction problem of the rubber stack. However, during the application process, it was found that when the train passes through a curve, the strong centrifugal force of the car body requires the rubber stack to adapt to it. Lateral rigidity to prevent excessive swing of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/08
CPCB61F5/08
Inventor 颉跟虎赵斌冯万盛林胜袁可刘晴美王峰宇王彦翔
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD