Friction damper

A friction damper and outer ring technology, applied in the fields of vibration, earthquake control devices, and impact, can solve the problems of inability to adjust parameters, inability to adjust on site, complicated processing technology, etc., to achieve convenient adjustment of damping parameters, broad market application prospects, Good engineering practicability

Active Publication Date: 2013-09-11
尹学军 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of friction damper can achieve greater damping force output, more stable damping performance, and better applicability, it also has certain shortcomings, which are manifested in: (1) When using the pre-tightening ring as a tightening device , the damping parameters of the friction damper are fixed, and cannot be adjusted on site according to the actual sit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 with figure 2 The friction damper of the present invention as shown includes a plunger 1 and a restraint cylinder 2, the plunger 1 is partially arranged in the restraint cylinder 2, and a group of combined expansion rings are arranged on the surface of the plunger 1, and the combined expansion ring consists of an inner tapered surface The outer ring 4 and the inner ring 3 with the outer tapered surface cooperate to form, and the inner wall of the constraint cylinder 2 is in close contact with the surface of the outer ring 4 .

[0051] The working principle of the friction damper of the present invention will be described below by taking the application in bridge structures as an example, wherein the plunger 1 and the restraining cylinder 2 of the friction damper of the present invention are both made of steel, and the inner ring in the combined expansion ring 3 and outer ring 4 are all made of spring steel. Such as image 3 As shown, according to th...

Embodiment 2

[0059] Such as Figure 4 with Figure 5 The difference between the friction damper of the present invention shown in Embodiment 1 is that one end of the plunger 1 is set in the restraining cylinder 2, and in addition, pretensioning devices are provided on both sides of the combined expansion ring, and the pretensioning devices include steel The outer surface of the plunger 1 corresponds to two limit stops 11 which are respectively welded and fixed on both sides of the combined expansion ring. In addition, in order to facilitate the connection with the surrounding structures, the plunger and the restraining cylinder are respectively provided with connecting interfaces, which are specifically the connecting plate 10 welded on the plunger 1 and the connecting plate 9 welded and fixed on the restraining cylinder 2 . In addition, the combined expansion ring directly adopts the finished ring spring, and the ring spring is also composed of an outer ring 4 with an inner tapered surf...

Embodiment 3

[0066] Such as Figure 9 The difference between the friction damper of the present invention and the second embodiment is that the combined expansion ring includes a plurality of inner rings 3 and outer rings 4, the number of which is the same, and the inner rings 3 correspond to the outer rings 4 one by one. And superimposed on each other through the cooperation of the inner and outer cone surfaces, there is no gap between the adjacent outer rings and the adjacent inner rings, and the inclination direction of the inner cone surfaces of the adjacent outer rings is the same as that of the outer ring of the inner ring. The direction of inclination of the cone also remains the same. In addition, the plunger 1 is provided with a pretensioning device corresponding to both sides of the combined expansion ring, and the pretensioning device includes a limit stopper 11 fixedly welded on the surface of the plunger 1 and a limit pin 43 embedded in the plunger 1 . Wherein, a space compe...

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Abstract

The invention relates to a friction damper which comprises a plunger and a restraint cylinder, wherein the plunger is at least locally arranged in the restraint cylinder. The friction damper is characterized in that at least one group of combined expansion rings is arranged on the surface of the plunger; the combined expansion rings are formed by matching outer circular rings with inner conical surfaces and inner circular rings with outer conical surfaces; an inner wall of the restraint cylinder is tightly contacted with the surfaces of the outer circular rings; or a wear-resistant and rust-proof layer or a wear-resistant and rust-proof sleeve is arranged between the restraint cylinder and the outer circular rings. The friction damper is simple in structure, stable in property, long in service life, very environment-friendly and better in engineering practicability, does not require maintenance basically, can continue to be used after repair, has the renewable characteristic and a wide market application prospect, can adjust damping parameters conveniently, and can optimize and adjust the damping parameters of a product according to engineering practice in a field.

Description

technical field [0001] The invention relates to a shock, vibration and earthquake control device, a damper, especially a damper for shock absorption and energy dissipation of industrial buffering and building structures. Background technique [0002] Damper is a widely used basic component of vibration control, which is used for vibration reduction, buffering, shock absorption and energy dissipation of machinery, vehicles, bridges and building structures. [0003] The most common damper is the small hole throttling type, also known as the hydraulic cylinder type, which is composed of a piston, a cylinder body and a seal. Divided into two piston chambers, the piston chamber is filled with hydraulic oil or a viscous liquid with a slightly higher viscosity, such as silicone oil, when the piston moves relative to the cylinder, the hydraulic oil flows from the piston gap or small hole to the other piston chamber, the two pistons The pressure difference in the chamber forms resis...

Claims

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Application Information

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IPC IPC(8): F16F7/08E01D19/00E04B1/98
Inventor 尹学军谭平贺庆李玉召杨宏伟薛松王乾安孔祥斐付学智
Owner 尹学军
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