CN201738195U - Composite damper spring vibration isolator for floating slab tracks in rail transit - Google Patents

Abstract

The utility model discloses a composite damper spring vibration isolator for floating slab tracks in rail transit, which adopts a cannular structure, wherein the interior of the cannular structure is divided into a two-layer structure including an upper layer and a lower layer, a rubber steel spring vulcanized part and a damping case are positioned inside the cannular structure; an upper steel board, a rubber, a steel spring and the damping case are vulcanized integrally; a hollow structure is adopted in the middle, a piston rod and a piston are arranged inside the damping case at the lower part, the piston rod is screwed, connected and firmly fixed with the upper steel board, and the upper steel board is screwed, connected and firmly fixed with an outer sleeve supporting board. Damping agents are filled inside the middle hollow part and the damping case, and a bottom board of the damping case is positioned on the foundation of a floating slab track bed. The composite damper spring vibration isolator for floating slab tracks in rail transit has the advantages of raising the damping of the floating slab track system and achieving the damping coefficient of 0.08 to 0.20; the composite damper spring vibration isolator reduces the vibration and noise by 20 to 30 dB, has better buffering effect on the track dynamic impact, has the advantages of good vibration and noise reduction performance, good security performance, low construction cost and so on, and can be widely applied to the rail transit sections with higher vibration and noise reduction requirements and special vibration reduction.

Description

The composite damping spring vibration isolation device that is used for the orbit traffic floating board track

Technical field

The utility model relates to a kind of traffic technique field, particularly a kind of composite damping spring vibration isolation device that is used for subway, light rail transit floating plate track.

Background technology

Most of in the world subways, light rail transit track structure adopt the bigger concrete integral channel bed of rigidity, to reduce the maintenance work in the operation.The elasticity of track structure mainly relies on rail fastening to provide.The relatively poor rail fastening of elasticity can cause serious wheel track vibration and impact, and not only influences the application life of track structure, and has brought environment pollutions such as vibration and noise, directly influences people's life and health.Big quantity research has been carried out to the vibration damping type track structure in countries in the world.The damper rail form is main at present: spring secures rail to sleeper, elastic sleeper, floating plate track etc.Floating plate track is the most effective vibration reducing measure.

The mass-spring system that floating plate track is made up of steel concrete road bed board and elastic support, by the shock-absorbing spring element steel concrete road bed board is suspended, form a kind of track pattern with higher effectiveness in vibration suppression, its effectiveness in vibration suppression reduces by 15～25dB than ballast bed track, generally is used for the location that the track traffic vibration damping is had relatively high expectations.Elastic support has neoprene bearing, spring fastening etc., neoprene bearing application life is short, the spring fastening long service life is replaceable, but damping is little, present domestic floating plate rail structure spring vibration isolation device is mainly offshore company's product, involve great expense, only use in the location of the special vibration damping of needs, the use that this certainly will restrict this track vibration-reducing product directly has influence on environmental quality along the line.

The utility model content

Technical problem to be solved in the utility model is that the composite damping spring vibration isolation device that is used for the orbit traffic floating board track that a kind of vibration and noise reducing performance is good, cost is low will be provided.

In order to solve above technical problem, the utility model provides a kind of composite damping spring vibration isolation device that is used for the orbit traffic floating board track, described vibration isolator is a tubular structure, be divided into two-layer structure up and down in the tube, be placed with rubber steel spring sulfuration part and damping case in the tube, wherein, last iron plate, rubber, steel spring, the whole sulfuration of damping case, the centre is an engraved structure, in the damping case of bottom piston rod and piston are arranged, piston rod part and last iron plate being spirally connected tighten up, and last iron plate and outer sleeve loaded plate are spirally connected and tighten up, all be filled with damping agent in middle engraved structure and the damping case, the damping box plate is placed on the plate railway roadbed basis of floating.

Described rubber, steel spring vulcanize as a whole, and intermediate inner wall is a screw type.

Described piston is provided with the limited block that is used for the piston installing and locating and is used to regulate damping size, the mobile damping hole of damping agent.

Composite damping spring vibration isolation device structure of the present utility model reaches bedding behind the track vibration process composite damping steel spring bearing that train operation causes, can obtain better buffering vibration isolating effect.

Superior effect of the present utility model is:

1) the utility model adopts rubber combined steel spring and damper parallel-connection structure, has improved the floating plate track system damping greatly, and damped coefficient reaches 0.08～0.20;

2) vibration isolator structural vibration reduction noise reduction of the present utility model reaches 20～30dB, owing to set up the damping case, can better cushion the track dynamic impact, its effectiveness in vibration suppression surpasses raw steel spring vibration isolation device product, have that the vibration and noise reducing performance is good, security performance is high and advantages such as construction costs is low, extensive use track traffic vibration and noise reducing is had relatively high expectations and special vibration damping location;

3) cost is low, and performance is good, fully import substitutes.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is positioned over profile on the viaduct for the utility model;

Fig. 3 is positioned over profile in the tunnel for the utility model.

The number in the figure explanation

The last iron plate of 1-; The 2-steel spring;

3-rubber; 4-damping case upper plate;

5-damping box plate; 6-vibration isolator outer sleeve;

The 7-engraved structure; The 8-piston rod;

9-piston limited block 10-piston;

The 11-damping agent; The 12-bolt;

13-outer sleeve loaded plate; The 14-bolt;

15-damping case; The 16-damping hole;

The 17-plate of floating.

The specific embodiment

Shown in accompanying drawing, the utility model will be further described.

As shown in Figure 1, the utility model provides a kind of composite damping spring vibration isolation device that is used for the orbit traffic floating board track, described vibration isolator is a tubular structure, be divided into two-layer structure up and down in the outer sleeve 6, be placed with rubber steel spring sulfuration part and damping case 15 in the outer sleeve 6, wherein, last iron plate 1, rubber 3, steel spring 2, the 15 whole sulfurations of damping case, the centre is an engraved structure 7, piston rod 8 and piston 10 are arranged in the damping case 15 of bottom, piston rod 8 tops tighten up with last iron plate 1 usefulness bolt 14 and are connected, last iron plate 1 tightens up with outer sleeve loaded plate 13 usefulness bolts 12 and is connected, all be filled with damping agent 11 in middle engraved structure 7 and the damping case 15, damping box plate 5 is placed on the plate 17 railway roadbed bases of floating.

Described rubber 3, steel spring 2 vulcanize as a whole, and intermediate inner wall is a screw type.

Described piston 10 is provided with the limited block 9 that is used for piston 10 installing and locating and is used to regulate the damping hole 16 that damping size, damping agent 11 flow.

When piston rod 8 tops and last iron plate 1 are spirally connected, limited block 9 on the piston 10 plays position-limiting action, when last iron plate 1 is tightened with piston rod 8, piston limited block 9 in following damping case 15 is just in time run into damping case upper plate 4, after in vibration isolator is installed to the plate 17 of floating, under the dead load effect of the plate 17 of floating, limited block 9 has certain interval with following damping case upper plate 4, guarantees like this in the generation damping of moving in damping case 15 of the piston 10 of vehicle when floating the plate vibration isolator.

Described damping agent 11 can adopt identical or different resisting medium.

The damped coefficient size can be regulated by the damping hole 16 on rubber and damping agent prescription and piston 10 shapes and the piston, and damped coefficient can reach 0.08～0.20.

Vibration isolator structure of the present utility model reaches bedding behind the track vibration process composite damping Steel spring bearing that train operation causes, can obtain better buffering vibration isolating effect. Vibration and noise reducing reaches 20～30dB. This vibration isolator can improve floating plate bearing capacity and service life greatly, has the advantages such as the vibration and noise reducing performance is good, security performance is high, cost is low, but extensive use track traffic vibration and noise reducing is had relatively high expectations and special vibration damping location.

Claims (3)

1. composite damping spring vibration isolation device that is used for the orbit traffic floating board track is characterized in that:

Described vibration isolator is a tubular structure, be divided into two-layer structure up and down in the tube, be placed with rubber steel spring sulfuration part and damping case in the tube, wherein, last iron plate, rubber, steel spring, the whole sulfuration of damping case, the centre is an engraved structure, in the damping case of bottom piston rod and piston are arranged, piston rod part and last iron plate being spirally connected tighten up, and last iron plate and outer sleeve loaded plate are spirally connected and tighten up, all be filled with damping agent in middle engraved structure and the damping case, the damping box plate is placed on the plate railway roadbed basis of floating.

2. by the described composite damping spring vibration isolation device that is used for the orbit traffic floating board track of claim 1, it is characterized in that:

Described rubber and steel spring sulfuration are as a whole, and intermediate inner wall is a screw type.

3. by the described composite damping spring vibration isolation device that is used for the orbit traffic floating board track of claim 1, it is characterized in that:

Described piston is provided with the limited block that is used for the piston installing and locating and is used to regulate damping size, the mobile damping hole of damping agent.

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