CN204825522U - Resilient sleeper -bearing of making an uproar falls in multiple non -linear rigidity damping of high decay - Google Patents

Abstract

The utility model discloses a resilient sleeper -bearing of making an uproar falls in multiple non -linear rigidity damping of high decay, including the elasticity convex body with contain the eccentric spring in the elasticity convex body. The resilient sleeper -bearing is when the empty load, and the elasticity convex body receives the pre -compaction, and the rigidity of resilient sleeper -bearing is mainly provided by the elasticity convex body, is high rigidity, be about to the load and as yet totally during the load, eccentric spring is in as yet not unstability state at the wheel load, and resilient sleeper -bearing rigidity is mainly provided by eccentric spring, is extra -high -speed rigidity, when the further loading of wheel load, the eccentric spring unstability, the rigidity of resilient sleeper -bearing is connected in parallel by eccentric spring and elasticity convex body and provides, is low rigidity, when the wheel load loading to at full capacity the time, elasticity convex body loaded area is increased to the greatlyyest and the thickness of elasticity convex body falls to the minimum rigidity that makes the resilient sleeper -bearing and improves, eccentric spring constitutes parallelly connected spring with the elasticity convex body, is high rigidity. The utility model belongs to the nonlinear spring's of two different characteristics is parallelly connected, and rigidity is variable, and simple structure, installation be swift, it is convenient to adjust.

Description

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of a kind of high decay

[technical field]

The utility model belongs to railroad track technical field, is specifically related to a kind of railroad track resilient sleeper-bearing.

[background technology]

In track traffic railway rail system; fastener system is the key components and parts of connection and fixing rail; sleeper or railway roadbed are the basic components under rail, and the resilient sleeper-bearing in fastener system is to provide one of critical element of elasticity, vehicle riding comfort, vibration isolation and protection rail bearing surface etc.

Resilient sleeper-bearing 40 in track traffic rail system is arranged under rail 28, on fastener on iron chair 5, is close to the soffit (as Suo Shi Fig. 3 (a)) of rail 28; Or below rail clip base plate (the resilient sleeper-bearing 40a as shown in Fig. 3 (b)), or on rail clip between iron plate and lower iron plate (the resilient sleeper-bearing 40b as shown in Fig. 3 (c) and 3 (d)), or between sleeper and railway roadbed (the resilient sleeper-bearing 40c as shown in Fig. 3 (e)).Resilient sleeper-bearing 40 (or resilient sleeper-bearing 40a, 40b, 40c; below be referred to as " resilient sleeper-bearing 40 ") elasticity that provides; the vibration and impact produced in locomotive operation process can be slowed down; absorb vibratory impulse energy; improve safety and the riding comfort of train operation; isolate the transmission of rail vibration to track, protection track and the excitation of vibration to railway roadbed basis thereof simultaneously.

According to the difference of rail and fastener system, sleeper, railway roadbed kind, resilient sleeper-bearing 40 can make various form of structure, and Fig. 4 is one wherein.Owing to being subject to the restriction of orbit altitude, the thickness of resilient sleeper-bearing 40 is general thinner, is usually no more than 16mm.

Resilient sleeper-bearing 40 generally adopts rubber or moulds the materials such as fat, is shaped by mould and sulfuration process or is made by machining.From resilient sleeper-bearing analysis popular at present, its physical simplifications model class is similar to a spring, and due to the restriction of vertical direction (thickness direction), the vertical direction rigidity of resilient sleeper-bearing 40 is difficult to accomplish very little, and rigidity not easily adjusts, effect of vibration and noise reduction is limited by very large.

At present, no matter be in high-speed railway, inter-city passenger rail or urban track traffic, the rigidity of resilient sleeper-bearing is all be designed to the range in stiffness of fixing according to train load weight and the speed of a motor vehicle, and this rigidity only can adopt alap rigidity to improve track anti-vibration performance under the condition meeting mechanical strength and vehicle operating safety requirements.In general, the lower isolation frequency of orbit rigidity is lower, and isolation frequency its anti-vibration performance lower is better more than isolation frequency.

But for rail, low rail support rigidity often causes high rail vibration and noise radiation thereof, simultaneously low orbit rigidity, its vibration is lower with the decay of distance, that is, the vibration that low rail support rigidity can allow rail produce under the excitation of wheel-rail interaction power and noise thereof are propagated farther by rail, the vibration of the general rail of rail support rigidity high is on the contrary lower, the vibration of rail simultaneously can leak into railway roadbed basis by high support stiffness, thus reduces rail vibration along rail propagation and noise radiation thereof.

At present, the vibration that produces under wheel-rail interaction rail of the Low rigidity design of resilient sleeper-bearing and noise thereof can not meet the acoustics vibration and noise reducing requirement of track simultaneously.Such as, for urban railway system track fastener, its connection stiffness scope can require design little to a few MN/m to tens MN/m (such as 5 ~ 60MN/m) according to safety and vibration isolation, but rail clip is required for control track vibration and noise radiation thereof, its connection stiffness scope is from hundreds of MN/m to thousands of MN/m (such as 500 ~ 1000MN/m), and two kinds of different technical property requirements cannot be met by a kind of resilient sleeper-bearing simultaneously.

[utility model content]

The purpose of this utility model is to provide a kind of high decay multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing, Low rigidity nonlinear elasticity (low load Low rigidity and the top load high rigidity) demand under train delivery condition can be realized, can meet again and there is no the high rigidity under train wheel load (the extra-high rigidity of zero load) demand, same resilient sleeper-bearing realizes multiple nonlinear stiffness characteristic, has the features such as structure is simple, quick for installation, easy to adjust simultaneously.

To achieve these goals, the utility model adopts following technical scheme:

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of a kind of high decay, comprises elasticity convex body and is included in the eccentric spring in elasticity convex body.

The utility model further improves and is: the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of described height decay is when zero load, and elasticity convex body is subject to precompressed, and the rigidity of resilient sleeper-bearing provides primarily of elasticity convex body; When wheel load is about to load and loads not yet completely, eccentric spring is in not yet instability status, and the rigidity of resilient sleeper-bearing provides primarily of eccentric spring; When wheel load loads further, eccentric spring unstability, the rigidity of resilient sleeper-bearing is provided by eccentric spring and the parallel connection of elasticity convex body; When wheel load is loaded at full capacity, elasticity convex body loaded area is increased to maximum and thickness that is elasticity convex body drops to the minimum rigidity of resilient sleeper-bearing that makes improves, and eccentric spring and elasticity convex body form parallel springs.

The utility model further improves and is: the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of described height decay also comprises elastic matrix, and elasticity convex body is arranged on elastic matrix; The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of described height decay comprises some elasticity convex bodys, and some elasticity convex bodys are disposed on elastic matrix.

The utility model further improves and is: the cross sectional shape of elasticity convex body is circular, ellipse, Long Circle or polygon; The shape of cross section of eccentric spring is circle, ellipse, polygon, variable cross-section shape or tabular; Geometric center on the upper surface of elastic matrix on elastic matrix and the soffit under elastic matrix overlaps.

The utility model further improves and is: elasticity convex body and eccentric spring are the integral structure made by sulfuration or combination process.

The utility model further improves and is: be provided with some eccentric springs in described elasticity convex body; When the number of some eccentric springs is more than or equal to two, be centrosymmetric arrangement in elasticity convex body.

The utility model further improves and is: eccentric spring comprises the eccentric part at vertical main part and center, offset from body portion, and eccentric part is arranged at main part one end or two ends; The peak position of the eccentric part at top is the peak position of whole eccentric spring, and this point departs from vertical main part axle center; When being subject to ambient pressure, the summit of eccentric part takes the lead in pressurized.

The utility model further improves and is: elasticity convex body is strip; The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of described height decay also comprises elastic matrix, and elasticity convex body is arranged on elastic matrix; Between adjacent spring convex body, interval is arranged; Eccentric spring is triangular wave, dextrorotation ripple, cosine wave or square wave shape; The shape of cross section of eccentric spring is circle, ellipse, polygon, variable cross-section shape or tabular.

The utility model further improves and is: above the upper iron plate that resilient sleeper-bearing is placed on Rail underfooting side or the board-like fastener of multi-layered soles or below upper iron plate, or on sleeper track or on road bed board track.

The utility model further improves and is: the material of eccentric spring is metal or nonmetals; The material of elasticity convex body is natural rubber, chloroprene rubber, high decay rubber or composite elastic material.

The purposes of this multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of utility model height decay can be very wide, the railway rail pad, intermediate pads etc. that not only can be made into standard are selected for user, also can make large format to cut randomly, need the occasion of large scale backing plate to use as plummer backing plate etc.

Relative to prior art, the utility model has following beneficial effect:

The utility model achieves resilient sleeper-bearing variable rigidity in less space, and has quiet height and move Low rigidity characteristic, improves the performance of resilient sleeper-bearing and the safety of train operation and comfortableness.

Compared with traditional resilient sleeper-bearing be made up of homogenous material, the utility model is a kind of compound resilient sleeper-bearing, belong to the parallel connection of the nonlinear spring of two different qualities, variable rigidity, remain the feature that structure is simple, quick for installation, easy to adjust simultaneously, be applicable to having quarrel and ballastless bed circuit to use.

The utility model resilient sleeper-bearing can be made into standard component, or cuts according to on-site actual situations after large format canonical form.

[accompanying drawing explanation]

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described.Apparently, the accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic diagram of the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of high decay;

Fig. 2 is the power-deformation pattern of the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of high decay;

Fig. 3 is several real case schematic diagrames of resilient sleeper-bearing use occasion;

Fig. 4 is a kind of structural representation of traditional elastic backing plate;

Fig. 5 (a) is a kind of case study on implementation structure in the utility model embodiment one-eccentric spring type structures schematic diagram; Wherein, the cross sectional shape of elasticity convex body 42 is circular, comprises 2 eccentric springs 51 in each elasticity convex body 42;

Fig. 5 (b) is the sectional view of a kind of case study on implementation structure-eccentric spring type structures in the utility model embodiment one; Wherein, the cross sectional shape of elasticity convex body 42 is circular, comprises 2 eccentric springs 51 in each elasticity convex body 42;

Fig. 6 (a) is structural representation when front high rigidity state installed by the utility model embodiment one Elastic convex body 42 and eccentric spring 51;

Fig. 6 (b) for after the utility model embodiment one Elastic convex body 42 and eccentric spring 51 structure predeformation, the structural representation before the non-unstability of eccentric spring 51 during extra-high rigidity state;

Fig. 6 (c) is for the utility model embodiment one Elastic convex body 42 and eccentric spring 51 are under wheel load pressure, eccentric spring 51 unstability, arm of force increase makes it lose axial rigidity leading role, elasticity convex body 42 is out of shape further, body diameter increases with load and rises, and rigidity improves structural representation when entering inelastic region state;

Fig. 7 (a) is structural representation when a kind of case study on implementation structure-elasticity convex body 42 cross sectional shape in the utility model embodiment one is Long Circle;

Fig. 7 (b) is structural representation when a kind of case study on implementation structure-elasticity convex body 42 cross sectional shape in the utility model embodiment one is ellipse;

Fig. 7 (c) is structural representation when a kind of case study on implementation structure-elasticity convex body 42 cross sectional shape in the utility model embodiment one is polygon;

Fig. 8 (a) is structural representation when a kind of case study on implementation structure in the utility model embodiment one-eccentric spring 51 shape of cross section is circle;

Fig. 8 (b) is structural representation when a kind of case study on implementation structure in the utility model embodiment one-eccentric spring 51 shape of cross section is ellipse;

Fig. 8 (c) is structural representation when a kind of case study on implementation structure in the utility model embodiment one-eccentric spring 51 shape of cross section is polygon;

Fig. 8 (d) is structural representation when a kind of case study on implementation structure in the utility model embodiment one-eccentric spring 51 is leaf spring;

Fig. 8 (e) is structural representation when a kind of case study on implementation structure in the utility model embodiment one-eccentric spring 51 is variable cross-section;

Fig. 9 (a) is a kind of case study on implementation structure in the utility model embodiment one, the structural representation of spring distribution when comprising 1 eccentric spring 51 in elasticity convex body 42;

Fig. 9 (b) is a kind of case study on implementation structure in the utility model embodiment one, the structural representation of spring distribution when comprising 2 eccentric springs 51 in elasticity convex body 42;

Fig. 9 (c) is a kind of case study on implementation structure in the utility model embodiment one, the structural representation of spring distribution when comprising 3 eccentric springs 51 in elasticity convex body 42;

Fig. 9 (d) is a kind of case study on implementation structure in the utility model embodiment one, the structural representation of spring distribution when comprising 4 eccentric springs 51 in elasticity convex body 42;

Fig. 9 (e) is a kind of case study on implementation structure in the utility model embodiment one, the structural representation of spring distribution when comprising several eccentric springs 51 in elasticity convex body 42;

Figure 10 (a) is the overall appearance schematic diagram of a kind of case study on implementation structure in the utility model embodiment two;

Figure 10 (b) is cross-sectional view when a kind of case study on implementation structure in the utility model embodiment two-eccentric spring 51 is triangular structure;

Figure 10 (c) is cross-sectional view when a kind of case study on implementation structure in the utility model embodiment two-eccentric spring 51 is wavy shaped configuration;

Figure 10 (d) is cross-sectional view when a kind of case study on implementation structure in the utility model embodiment two-eccentric spring 51 is rectangular configuration;

Figure 11 is several case study on implementation structures-eccentric spring 51 in the utility model embodiment two when being triangle, waveform, rectangular configuration, structural representation when cross sectional shape is circular, oval, polygonized structure;

Figure 12 is the shape of a kind of case study on implementation structure-eccentric spring 51 in the utility model embodiment two when being wavy shaped configuration, the structural representation of spring;

Figure 13 is the shape of a kind of example structure-eccentric spring 51 in the utility model embodiment two when being rectangular configuration, the structural representation of spring;

Figure 14 (a) is structural representation when front high rigidity state installed by the eccentric spring 51 of a kind of case study on implementation structure-band elastic convex body 42 in the utility model embodiment two and triangular structure;

Figure 14 (b) for after band elastic convex body 42 in the utility model embodiment two and triangular structure eccentric spring 51 structure predeformation, the structural representation before the non-unstability of the eccentric spring 51 of triangle during extra-high rigidity state;

Figure 14 (c) is for after band elastic convex body 42 in the utility model embodiment two and triangular structure eccentric spring 51 structure wheel load, under wheel load pressure, eccentric spring 51 unstability of triangular structure, arm of force increase makes it lose bar length direction rigidity leading role, band elastic convex body 42 is out of shape further, size increases with load and rises, and rigidity improves structural representation when entering inelastic region state;

Figure 15 (a) is structural representation when front high rigidity state installed by the eccentric spring 51 of a kind of case study on implementation structure-band elastic convex body 42 in the utility model embodiment two and rectangular configuration;

Figure 15 (b) for after band elastic convex body 42 in the utility model embodiment two and rectangular configuration eccentric spring 51 structure predeformation, the structural representation before the non-unstability of the eccentric spring 51 of rectangular configuration during extra-high rigidity state;

Figure 15 (c) is for band elastic convex body 42 in the utility model embodiment two and the eccentric spring 51 of rectangular configuration are under wheel load pressure, eccentric spring 51 unstability of rectangular configuration, arm of force increase makes it lose bar length direction rigidity leading role, band elastic convex body 42 is out of shape further, size increases with load and rises, and rigidity improves structural representation when entering inelastic region state.

In figure: 1, anchor bolts assemblies, 2, cover plate, 3, regulate pad, 4, nylon jacket, 5, upper iron plate, 7, lower iron plate, 9, spring, 10, track gauge block, 28, rail, 40, resilient sleeper-bearing, 41, elastic matrix, 42, elasticity convex body, 43, straight trough, 51, eccentric spring; 510, main part, 511, eccentric part.

Need to illustrate all: the eccentric spring 51 in each elasticity convex body 42 according to different directions, can be arranged arbitrarily within the scope of 360 °.Also can distribute in each band elastic convex body 42 one or several eccentric spring 51 come in every shape.

Each figure is only one or several arrangement forms wherein above.

The material of eccentric spring 51 be 60Si2MnA (or other high-quality spring steel material, as: 50CrMnV etc.), or other have flexible metal, nonmetals.

The material of elastic matrix 41 is natural rubber (or chloroprene rubber, high rubber, composite elastic materials etc. of decaying), or other elastomeric materials.

[detailed description of the invention]

The action principle of the multiple non-linear rigidity vibration and noise reducing backing plate of high decay:

As shown in Figure 1, when pole pressure P in the vertical direction increases gradually and reaches certain threshold, can produce " unstability ", cause a buckling of bar.According to negative rigidity principle, when after generation flexing, be negative stiffness in the horizontal direction.And when there is Critical Buckling, be zero stiffness.Therefore select suitable pressure, pole intrinsic frequency in the horizontal direction can be made low arbitrarily, thus the effect of the direction low frequency vibration isolation that is up to the standard.

According to the calculating of mechanics of materials buckling load, can learn that the buckling load in Fig. 1 is:

$P_{cr}=\frac{{\mathrm{\π}}^{2}EI}{4L^2}$

Deflection Formula according to bar has:

$x=x_0+\frac{{\mathrm{Px}}_0}{3EI/L^2}$

$x=\frac{FL}{3EI/L^2}+\frac{P\left(\frac{FL}{3EI/L^2}\right)}{3EI/L^2}=\frac{F}{k_0}+\frac{PF/k_0}{3EI/L^2}$

Obtained by above formula:

$\frac{F}{x}=\frac{1}{\frac{1}{k}+\frac{P/k_0}{3EI/L^2}}=\frac{k_0\·3EI/L^2}{3EI/L^2+P}$

Comprehensive above formula, can obtain system level directional stiffness is:

k＝(1-P/P _cr)k ₀(1-1)

Wherein

$k_0=\frac{3EI}{L^3}$

As can be seen from formula (1-1): work as P=P _crtime, the rigidity k=0 of horizontal direction.

The implication of various middle parameter above:

P _cr-buckling load;

P-bar length direction power;

E-young's modulus of elasticity;

I-moment of inertia;

L-bar is long;

X-is out of shape;

X ₀-initial deformation;

K-performance level analysis;

K ₀the initial stiffness of-horizontal direction;

Fig. 2 is force-deflection figure.As can be seen from Figure 2, before installation, enter predeformation district, be out of shape and increase with the increase puted forth effort under the effects such as buckle press, power is substantially linear with distortion, and resilient sleeper-bearing 40 presents high rigidity.After installation, under the gravity such as rail, sleeper (without wheel load) effect, enter extra-high stiffness region, be out of shape change with the increase puted forth effort very micro-, basic in a horizontal linear.After wheel load loads gradually, eccentric spring 51 " unstability " distortion, elasticity convex body 42 is in parallel with it, and resilient sleeper-bearing is Low rigidity; Along with wheel load all loads, contact area increases, and resilient sleeper-bearing 40 shows high non-linearity, presents high rigidity.

By gravity and the train wheel load of the buckling load of material, rail and sleeper, required eccentric spring 51 and elasticity convex body 42 can be designed, to realize the curve of stress deformation shown in Fig. 2, then Low rigidity nonlinear elasticity (low load Low rigidity and the top load high rigidity) demand under train delivery condition is realized, can meet again and there is no the high rigidity under train wheel load (the extra-high rigidity of zero load) demand, same resilient sleeper-bearing realizes multiple nonlinear stiffness characteristic, has the feature that structure is simple, quick for installation, easy to adjust simultaneously.

The utility model provides the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing of a kind of high decay, is applied in railway track fastener system, sleeper and railway roadbed parts.

Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.

Embodiment one:

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of a kind of high decay of the utility model, is arranged under rail 28 with integral form, is close to the soffit of rail 28.

Described height multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of decaying also can be arranged between the upper and lower iron chair of fastener system as middle pad, or is arranged between lower iron chair and sleeper as adjusting pad.Also sleeper and railway roadbed can be arranged on, between railway roadbed and basis.

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of high decay is a kind of " nail pillar " structures, its structure is as shown in Fig. 5 (a), 5 (b), this structure is made up of elastic matrix 41, some elasticity convex bodys 42 and the eccentric spring 51 be included in elasticity convex body 42, and elasticity convex body 42 and eccentric spring 51 use sulfuration or combination process to make one.Certain distance is arranged at the eccentric top of spring 51 and the top of distance from bottom elasticity convex body 42 and bottom, and during distortion, the rubber part that elasticity convex body 42 is positioned at eccentric spring 51 top and bottom is first out of shape.

Elastic matrix 41 and elasticity convex body 42 are an entirety, and its Elastic convex body 42 is with the upper and lower surface of even or uneven formal distribution at elastic matrix 41.

Leave space between elasticity convex body 42, be convenient to its compressive strain.The cross sectional shape of elasticity convex body 42 can be circular (Fig. 5 (b)), Long Circle (Fig. 7 (a)), oval (Fig. 7 (b)) or polygon (Fig. 7 (c)).

Described eccentric spring 51 is included in elasticity convex body 42; Eccentric spring 51 comprises the eccentric part 511 at vertical main part 510 and center, offset from body portion 510, and eccentric part 511 is arranged at main part 510 one end or two ends; The two ends shape of eccentric spring 51 is similar to " crutch ".Its shape of cross section can be circular (Fig. 8 (a)), oval (Fig. 8 (b)), polygon (Fig. 8 (c)), variable cross-section shape (Fig. 8 (e)), or uses flat spring (Fig. 8 (d)) to make.The peak position of the eccentric part 511 at top is the peak position of whole eccentric spring 51, and this point departs from vertical main part 510 axle center; When being subject to ambient pressure, the summit of eccentric part 511 takes the lead in pressurized, and when this pressure acquires a certain degree, unstability occurs main part 510.

Before installation, by the effect of the power such as deadweight, buckle press, elasticity convex body 42 on elastic matrix 41 is subject to precompressed, and the state of resilient sleeper-bearing 40 is high rigidity, and the rigidity of whole resilient sleeper-bearing 40 provides (as Suo Shi Fig. 6 (a)) primarily of soft elasticity convex body 42.

When wheel load is about to load and not yet loads, due to eccentric spring 51 not yet unstability, backing plate rigidity provides primarily of eccentric spring 51, and whole resilient sleeper-bearing 40 presents extra-high rigidity (as Suo Shi Fig. 6 (b)).

When wheel load loads, eccentric spring 51 unstability, arm of force increase loses rigidity leading role, elasticity convex body 42 is out of shape (rubber of elasticity convex body 42 and eccentric spring 51 are out of shape simultaneously) further, the diameter dimension of elasticity convex body 42 rises with load and increases, rigidity is improved and enters inelastic region, present Low rigidity.Along with wheel load is loaded at full capacity gradually, the diameter of elasticity convex body 42 and be all increased to maximum with the contact area of carrier, eccentric spring 51 forms parallel springs with elasticity convex body 42, and resilient sleeper-bearing 40 presents high rigidity (as Suo Shi Fig. 6 (c)).

Eccentric spring 51 can according to different directions, quantity, uniform or any arrangement (as shown in Figure 9) within the scope of 360 ° in each elasticity convex body 42.

Embodiment two:

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of the utility model height decay, is arranged under rail 28 with integral form, is close to the soffit of rail 28.

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of high decay also can be arranged between the Double layer iron backing plate of fastener system as middle pad, or is arranged between lower iron chair and sleeper as adjusting pad.Also sleeper and railway roadbed can be arranged on, between railway roadbed and basis.

The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of high decay is a kind of " plate channel type " structures, and its structure is as shown in Figure 10 (a), 10 (b), 10 (c), 10 (d).The structure of the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing 40 of this height decay is made up of elastic matrix 41, straight trough 43, band elastic convex body 42 and the eccentric spring 51 comprised within it, and band elastic convex body 42 and eccentric spring 51 use sulfuration or combination process to make one.

Straight trough 43 uses mould or machined form to make, and with the upper and lower surface (as shown in Figure 10) of even or uneven formal distribution at elastic matrix 41.

Be separated by (Figure 10) with straight trough 43 between band elastic convex body 42, be convenient to the dilatation of band elastic convex body 42.

It is interior as shown in Figure 10 (a), 10 (b), 10 (c), 10 (d) that eccentric spring 51 is included in band elastic convex body 42.Eccentric spring 51 can be made into waveform, as: the shapes such as triangular wave, dextrorotation ripple or square wave (as shown in Figure 11 (a), 12 (a), 13 (a)).The length of eccentric spring 51 is l, and arc length is p, and thickness is δ; Wherein angle 0 ° of ﹤ θ ﹤ 180 ° in triangular wave, sine wave, cosine wave; In square wave, the horizontal sides length a of rectangle is less than vertical edge length b to play its buckling deformation.

The cross sectional shape of eccentric spring 51 can be circular (Figure 11 (b)), oval (Figure 11 (c)), polygon (Figure 11 (d)), or variable cross-section, also can use leaf spring to make (as Suo Shi Figure 11 (e)).

Before installation, by the effect of the power such as deadweight, buckle press, band elastic convex body 42 on elastic matrix 41 is subject to precompressed, the state of resilient sleeper-bearing 40 is high rigidity, and the rigidity of whole resilient sleeper-bearing 40 provides (as shown in Figure 14 (a), 15 (a)) primarily of soft band elastic convex body 42.

When wheel load is about to load and not yet loads, due to eccentric spring 51 not yet unstability, the rigidity of resilient sleeper-bearing 40 provides primarily of eccentric spring 51, and whole resilient sleeper-bearing 40 presents extra-high rigidity (as shown in Figure 14 (b), 15 (b)).

When wheel load loads, eccentric spring 51 unstability, arm of force increase loses the rigidity leading role of bar length direction.When band elastic convex body 42 is out of shape (rubber of elasticity convex body 42 and eccentric spring 51 are out of shape) further simultaneously, when size rises with load and increases, the rigidity of resilient sleeper-bearing 40 improves, and enter inelastic region, whole resilient sleeper-bearing 40 presents Low rigidity.Along with wheel load is loaded at full capacity gradually, the size of band elastic convex body 42 and be all increased to maximum with the contact area of carrier, eccentric spring 51 forms parallel springs with band elastic convex body 42, and whole resilient sleeper-bearing 40 presents high rigidity (as shown in Figure 14 (c), 15 (c)).

The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.

Above-described is only preferred embodiment of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (9)

1. high decay multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40), is characterized in that, comprises elasticity convex body (42) and is included in the eccentric spring (51) in elasticity convex body (42).

2. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of described height decay is when zero load, elasticity convex body (42) is subject to precompressed, and the rigidity of resilient sleeper-bearing (40) provides primarily of elasticity convex body (42); When wheel load is about to load and loads not yet completely, eccentric spring (51) is in not yet instability status, and the rigidity of resilient sleeper-bearing (40) provides primarily of eccentric spring (51); When wheel load loads further, eccentric spring (51) unstability, the rigidity of resilient sleeper-bearing (40) is provided by eccentric spring (51) and elasticity convex body (42) parallel connection; When wheel load is loaded at full capacity, elasticity convex body (42) loaded area is increased to maximum and thickness that is elasticity convex body (42) and drops to the minimum rigidity of resilient sleeper-bearing (40) that makes and improve, and eccentric spring (51) and elasticity convex body (42) form parallel springs.

3. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of described height decay also comprises elastic matrix (41), and elasticity convex body (42) is arranged on elastic matrix (41); The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of described height decay comprises some elasticity convex bodys (42), and some elasticity convex bodys (42) are disposed on elastic matrix (41).

4. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 3, is characterized in that, the cross sectional shape of elasticity convex body (42) is circular, ellipse, Long Circle or polygon; The shape of cross section of eccentric spring (51) is circle, ellipse, polygon, variable cross-section shape or tabular; The geometric center on the upper and lower surface of elasticity convex body (42) overlaps; Elastic matrix (41) connects elasticity convex body (42) middle part.

5. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, elasticity convex body (42) and eccentric spring (51) are the integral structure made by sulfuration or combination process.

6. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, is characterized in that, be provided with some eccentric springs (51) in described elasticity convex body (42); When the number of some eccentric springs (51) is more than or equal to two, be centrosymmetric arrangement in elasticity convex body (42).

7. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, eccentric spring (51) comprises vertical main part (510) and the eccentric part (511) at offset from body portion (510) center, and eccentric part (511) is arranged at main part (510) one end or two ends; The peak position of the eccentric part (511) at top is the peak position of whole eccentric spring (51), and this point departs from vertical main part (510) axle center; When being subject to ambient pressure, the summit of eccentric part (511) takes the lead in pressurized.

8. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, elasticity convex body (42) is strip; The multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of described height decay also comprises elastic matrix (41), and elasticity convex body (42) is arranged on elastic matrix (41); Between adjacent spring convex body (42), interval is arranged; Eccentric spring (51) is triangular wave, sine wave, cosine wave or square wave shape; The shape of cross section of eccentric spring (51) is circle, ellipse, polygon, variable cross-section shape or tabular.

9. the multiple non-linear rigidity vibration and noise reducing resilient sleeper-bearing (40) of a kind of high decay according to claim 1, it is characterized in that, above the upper iron plate that resilient sleeper-bearing (40) is placed on Rail underfooting side or the board-like fastener of multi-layered soles or below upper iron plate, or on sleeper track or on road bed board track.