CN201472397U

CN201472397U - Vibration damper for railway vehicle floating floor

Info

Publication number: CN201472397U
Application number: CN200920170884XU
Authority: CN
Inventors: 赵锦峰; 孙召进; 徐宏伟
Original assignee: CSR Qingdao Sifang Locomotive and Rolling Stock Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2009-08-10
Filing date: 2009-08-10
Publication date: 2010-05-19
Anticipated expiration: 2019-08-10

Abstract

The utility model relates to a vibration damper for railway vehicle floating floors. The vibration damper is arranged in segment along the length direction of a vehicle body, and comprises a full-length metal beam and at least two metal supports with U-shaped cross sections, wherein the metal beam and the metal supports are integrated through the vulcanization of damping rubber, and are fixedly connected with an internal vehicle floor and a vehicle body respectively; and two holes are formed on the damping rubber between the metal beam and each metal support. The vibration damper can effectively damp the vibrations of the vehicle body, so as to reduce the noises and improve the comfort inside a vehicle; the proper length and position of the damper can be selected according to the arrangement of pipelines between the vehicle body and the internal vehicle floor, the load inside the vehicle and the vibrating rule of the vehicle body; and the damping rubber in the damper can bear the double loads of compression and shearing transformation, and has larger lateral rigidity but smaller lateral transformation during transformation, thereby ensuring the internal lateral stability of the railway vehicle during high-speed running.

Description

Guideway vehicle floating floor shock absorber

Technical field

The utility model relates to a kind of railway vehicle device, and particularly a kind of shock absorber of guideway vehicle floating floor belongs to the railway vehicle device technical field.

Background technology

On existing vehicle, especially on guideway vehicle, install on the floor generally is to be directly fixed on the car body by support beam, and rubber tie plate is leaned in damping vibration attenuation substantially, does not have special vibration-proof structure, so effectiveness in vibration suppression is limited.Along with as the developing rapidly of high speed guideway vehicles such as motor train unit, also just more and more higher to the requirement of Vehicle damper noise reduction and comfort level,

Vibration of vehicle and noise are to pass to floor in the compartment by support beam, to making the floor produce vibration, thereby radiated noise in car, because high-speed track vehicle running velocity height, vibration and noise all can obviously aggravate than the common railway vehicle, the coupling situation is also more complicated, and common ground board mounting structure can not the effective attenuation Vehicular vibration, does not guarantee passenger's traveling comfort.

In recent years, in order to reduce noise in the compartment, on vehicle, generally adopt the floating floor structure, need not be rigidly connected between floating floor and the support beam but adopt the resilient connection structure, what generally adopt at present is that the elastic layer that rubber damper one class is set between floor and support beam is realized floating building, shock damping action by rubber pad reduces car and vibrates transmission in car outward, but common rubber damper can not reach the requirement of high-speed track vehicle vibration and noise reducing.In addition, because also will lay many pipelines between hull bottom plate and the floor compartment, so existing shock pad etc. all are point-like setting, this has also influenced its effectiveness in vibration suppression.

Summary of the invention

The utility model main purpose is to address the above problem and is not enough, provide a kind of can the effective attenuation body oscillating, reduce internal car noise, can guarantee that vehicle space installs the guideway vehicle floating floor shock absorber of relation simultaneously.

For achieving the above object, the technical solution of the utility model is:

A kind of guideway vehicle floating floor shock absorber, this shock absorber is arranged along the segmentation of length over ends of body direction, it comprises elongated beams of metal, at least two metal brackets that section is a U-shaped, be structure as a whole by the vibration isolation rubber sulfuration between described beams of metal and the metal bracket, described beams of metal is captiveed joint with floor in the car, and described metal bracket is captiveed joint with car body.

The utility model further improves and is that described vibration isolation rubber is provided with two holes, and the material of described beams of metal adopts aluminium section bar, and the material of described metal bracket adopts stainless steel sheet or aluminium sheet.

Content to sum up, guideway vehicle floating floor shock absorber provided by the utility model forms an integral structure after installation, and the damping capacity by rubber plays damping of vibrations, guarantees the effective attenuation body oscillating, reduces internal car noise, improves the car comfort inside.Simultaneously, this shock absorber sectional is provided with, can select suitable length and the position is set according to the rule of load and body oscillating in the pipe line arrangement situation between the floor, the car in car body and the car, make it meet the wheel track transfer of vibration rule of guideway vehicle when high-speed cruising, satisfy the operating needs of guideway vehicle.

Vibration isolation rubber in this damper structure bears the dual load of compressive deformation and shear deformation, more can give full play to the damping capacity of rubber, and this structure is supported by the metal bracket of U-shaped, reliable, the vibration isolation rubber of this shock absorber lateral stiffness when distortion is bigger, but lateral deformation is very little, can satisfy the less requirement of lateral deformation under the guideway vehicle condition that vertical distortion is bigger when high-speed cruising, because under the same load condition, the lateral deformation of vibration isolation rubber is more little, can guarantee the lateral stability in the car more.

Description of drawings

Fig. 1 the utility model structural representation;

The birds-eye view of Fig. 2 Fig. 1;

The A-A cutaway view of Fig. 3 Fig. 1.

As Fig. 1 to shown in Figure 3, beams of metal 1, metal bracket 2, vibration isolation rubber 3, hole 4, auxiliary hole 5.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

As shown in Figure 1 to Figure 3, guideway vehicle floating floor shock absorber described in the utility model is fixed between the interior floor of hull bottom plate and car, is used for support floor, is used for vibration damping simultaneously, and the vibration of decay car body reduces internal car noise.

This shock absorber comprises that an elongated beams of metal 1, two sections are the metal bracket 2 of U-shaped, metal bracket 2 is used for support metal beam 1, be structure as a whole by vibration isolation rubber 3 sulfurations between beams of metal 1 and the metal bracket 2, between the interior floor of beams of metal 1 and car, by the mode captive joint of floor in car with the screw tapping, metal bracket 2 is provided with the auxiliary hole 5 that is used for fixing, and captives joint by fasteners such as bolts between the base plate of metal bracket 2 and car body.

Vibration isolation rubber 3 is provided with two holes 4, the section form in two holes 4 can be circle, oval, Long Circle etc., position by two holes 4, shape and size, can further regulate the rigidity of this shock absorber, satisfy different stiffness characteristics requirements, if the rigidity of vibration isolation rubber 3 is too big, then the effectiveness in vibration suppression of shock absorber is just relatively poor relatively, like this can be by adding the size of macropore 4, or change the shape in hole 4, to reduce the rigidity of vibration isolation rubber 3, the optimum shape in hole 4 is circular, and this moment, the material stress of vibration isolation rubber 3 was the most even, simultaneously, the distance in two holes 4 is just big more with the rate of change that load increases the closer to, the rigidity of shock absorber.

When load was less in the compartment, the vibration isolation rubber 3 only part between two holes 4 produced compressive deformation, and other main portion all produces shear deformation, and rigidity is less.After the load in the compartment increases gradually, the part that vibration isolation rubber 3 is out of shape by compression also can increase thereupon, rigidity also strengthens thereupon, because metal bracket 2 has adopted channel section, the lateral deformation of vibration isolation rubber 3 is limited in the small range, along with the increase of load, the lateral stiffness of vibration isolation rubber 3 also increases thereupon.Vibration isolation rubber 3 in this damper structure bears the dual load of compressive deformation and shear deformation, can give full play to the damping capacity of rubber, and structure is reliable, lateral stiffness is bigger, lateral deformation is less, satisfies the less requirement of lateral deformation under the guideway vehicle condition that vertical distortion is bigger when high-speed cruising, under the same load condition, the lateral deformation of vibration isolation rubber 3 is more little, can guarantee the horizontal stationarity in the car more.

This shock absorber is an integral type, and beams of metal 1, metal bracket 2 and vibration isolation rubber 3 are sulfided into integral structure,, manufacturing cost is relatively low, and technology is simple.Be subjected to the restriction of sulfuration process, the length specification of this shock absorber has certain requirement, can select suitable length according to the requirement of load in the compartment, satisfies the operating needs of guideway vehicle.

The material that beams of metal 1 adopts in the present embodiment is an aluminium section bar, can guarantee the support strength on floor in 1 pair of car of beams of metal on the one hand, can also effectively reduce the tare of guideway vehicle simultaneously, satisfies the more and more higher requirement of guideway vehicle running velocity.The material of metal bracket 2 adopts stainless steel sheet or aluminium sheet, guarantees its installation strength.

Beams of metal 1 in this shock absorber is an elongated aluminium section bar, and only adopts two metal brackets 2 that it is supported, and like this, when satisfying its integral installation intensity, can also further effectively reduce the tare of guideway vehicle.

In guideway vehicle, the high speed guideway vehicles such as motor train unit of especially present high speed development, its device space is very limited, in hull bottom plate and car, need to arrange more pipeline between the floor, as the supply and exhaust pipeline of air-conditioning, water supply and sewage pipe or the like, this shock absorber can be provided with flexibly according to the pipe line arrangement situation between the floor in hull bottom plate and the car.

After this shock absorber is installed, floor and hull bottom plate form complete integral structure in the car, and the oad of middle sulfuration vibration isolation rubber 3 can be checked and test through calculating, guarantee the effectively interior floor of supported cart of its intensity, and the vibration amplitude that can effective attenuation comes from equipment under car body, the car guarantees car in-to-in stationarity and traveling comfort.

According to the distribution situation of load in the car and the rule of body oscillating, can calculate this shock absorber optimum length size, vibration isolation rubber 3 oad and the position is set, wherein, the rigidity of shock absorber can be calculated by the aviation value of load capacity in the car, and further calculates the length of shock absorber and the oad of vibration isolation rubber 3 by the rigidity value of shock absorber.By what select shock absorber position and oad be set, can further regulate the vibration transfer function of shock absorber, make the rigidity and the oscillation frequency of this shock absorber meet vehicle wheel track transmission of vibration attenuation law fully, guarantee the effectiveness in vibration suppression of whole floor system, satisfy the operating needs of high-speed track vehicle.

As mentioned above, given in conjunction with the accompanying drawings and embodiments scheme content can derive the similar techniques scheme.In every case be the content that does not break away from technical solutions of the utility model, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. guideway vehicle floating floor shock absorber, it is characterized in that: this shock absorber is arranged along the segmentation of length over ends of body direction, it comprises elongated beams of metal (1), at least two metal brackets (2) that section is a U-shaped, be structure as a whole by vibration isolation rubber (3) sulfuration between described beams of metal (1) and the metal bracket (2), described beams of metal (1) is captiveed joint with floor in the car, and described metal bracket (2) is captiveed joint with car body.

2. guideway vehicle floating floor shock absorber according to claim 1 is characterized in that: described vibration isolation rubber (3) is provided with two holes (4).

3. guideway vehicle floating floor shock absorber according to claim 1 is characterized in that: the material of described beams of metal (1) is an aluminium section bar.

4. guideway vehicle floating floor shock absorber according to claim 1 is characterized in that: the material of described metal bracket (2) is stainless steel sheet or aluminium sheet.