CN1049039A

CN1049039A - Fastening device for rails

Info

Publication number: CN1049039A
Application number: CN 90103450
Authority: CN
Inventors: 赫曼·奥拉舍; 约翰·里格
Original assignee: Voest Alpine Zeltweg GmbH
Current assignee: Voest Alpine Zeltweg GmbH
Priority date: 1989-07-10
Filing date: 1990-07-09
Publication date: 1991-02-06
Also published as: EP0408543A3; EP0408543A2; PT94635A; AU632828B2; CA2020687A1; AU5871190A

Abstract

A kind of rail and/or track switch assembly are fixed on device on the sleeper, be encased inside an electric insulation layer between backing plate that it is used or floor and the sleeper, and in the fixed area of backing plate or floor (4), also be provided with insulating layer, two-layer electric insulation material wherein is set between sleeper and backing plate or floor at least, its stacked electric insulation layer is made the plate that basal plane has nothing in common with each other, and the periphery that is positioned at the insulating slab above the sleeper respectively makes progress all greater than the insulating slab periphery that is positioned at this plate bottom at all.This structure can make the electric insulation between sleeper and backing plate or the floor also can be guaranteed under disadvantageous weather conditions, and can make damping state correspondingly reach best when needed.

Description

Fastening device for rails

The present invention relates to a kind of rail and/or track switch assembly are fixed on device on the sleeper, install employed backing plate or floor and sleeper at this, particularly be encased inside an electric insulation layer between the steel sleeper, and in the fixed area of backing plate or floor, also be provided with insulating layer, two-layer electric insulation material wherein is set between sleeper and backing plate or floor at least.

In the prospectus DE-OS2527494 of Germany, disclose a kind of rail fastening, its objective is and rail flexibly will be fixed on the sleeper.This moment, rail itself was by being encased inside a liner of being made by elastomeric material and a floor or backing plate with being threaded, and floor is by being encased inside another layer elastic material and sleeper with being threaded, and this layer elastic material is the coating that is coated in floor or backing plate bottom surface.In addition, prospectus DE-OS3708752 in Germany has also described a kind of like this elasticity and adjustable fastening device for rails.Wherein floor or backing plate also the liner of by being encased inside with damping, noise elimination and electrical insulation capability and sleeper with being threaded.The main purpose of this known configurations obviously is the flexible fastening of rail, but particularly also proposes a kind of electric insulation joint in the prospectus DE-OS3708725 of Germany.In the hyundai electronics control sets, in the signal box, a large amount of signals be detected and transmit, therefore will avoid the generation of leakage current reliably.Particularly in harsh climate, known simple electric insulation can not enough prevent the appearance of above-mentioned leakage current reliably.For the concentrated signal box of band indicating panel, owing to also require the reliable insulation of high-frequency signal, so known structure is more prone to break down in harsh weather.Especially when its elastic shock attenuation performance is mainly considered in the selection of plastics, just not necessarily can guarantee to reach best insulation values equally.

Germany prospectus DE-OS1455354 discloses a kind of electric insulation liner that is used for railway track, is provided with the intermediate layer of a conduction between its two insulating cells below the flange of rail, so that know the insulation status of each liner by measurement.Yet be equipped with another wiring system or measuring system must for each liner for reaching this purpose, this has just more increased pending data volume, and owing to increased conductive layer in insulating layer, has also increased the possibility that produces spurious signal and leakage current.

Task of the present invention is to provide a kind of device of the above-mentioned type, even its electric insulation also can be guaranteed in disadvantageous weather conditions.In addition can also accomplish that rail fixes needed damping state optimization.The solution of this task of the present invention mainly is, the electric insulation layer that this device stacks together is made the plate that basal plane has nothing in common with each other, and the periphery that is positioned at the insulating slab above the sleeper greater than, be preferably in all respectively upwards all greater than the insulating slab periphery that is positioned at this plate bottom.Make the electric insulation layer of plate owing between floor or backing plate and sleeper, have at least two superimposed to place,, make that wherein at least one block of plate can not considered desired damping, only select to get final product by desired insulating properties so a kind of possibility is just arranged.Owing to used two stacked insulating slabs now, and wherein had at least the basal plane of a plate different, so can under the weather conditions of humidity, prevent the formation of the leakage current that is harmful to reliably with another piece plate.The stepped edges section that forms by said structure can also prevent to generate the general liquid film that can conduct electricity.To be positioned at insulating slab periphery above the sleeper make greater than, preferably at all respectively upwards all greater than the structure of the periphery of the insulating slab that is positioned at this plate bottom, just can accomplish very effectively to insulate.The structure of making in this way has one to stretch to inner chimb between its upper insulation plate and the lower insulation plate, the effect owing to gravity in strong down-pour can prevent to generate continuous liquid film reliably.This structure is preferably made following form, makes the periphery of the insulating slab that area is bigger make the drip limit, and the peripheral end face that so just can allow following that piece paste the insulating slab of sleeper is avoided the effect of rainwater.

The advantage of structure of the present invention is that it not only can be applied in the top-out of rail track effectively with steel sleeper, but also same member can be used in different concrete sleepers.Particularly same securing member also can be used for concrete sleeper, certainly requires nature different with steel sleeper to insulating properties this moment.Very favourable yes adopts a kind of unified floor system for rational superstructure of track, this floor has clamping plate or clamps terminal and a kind of corresponding elastic sleeper securing member that made by different materials, can reach best insulation values simultaneously on steel sleeper, for example Pan Deluoer (Pandrol) securing member etc.

The fixed-site of the insulating slab of the more or less flexible rail securing member of this class will be carried out in the final stage of assembling usually, and usually also needs adjustment that fastening rail is added.For reliable the assurance adjusted the unlikely insulating properties that influence for this position that carry out final location, particularly all the more so when using steel sleeper, should adopt following favourable structure, be on the sleeper at least a narrow avris at backing plate be provided with rest pad or support strip, and between the narrow avris of rest pad and adjacent backing plate or floor, be provided with insulation strip.This structure of setting up insulation strip between floor and rest pad can guarantee when rail because of adjustment lateral displacement takes place, floor can be not directly with for example be that rigidity is welded on rest pad on the steel sleeper or support strip and conduction takes place contacts.Can realize highly stable and reliable insulation in the zone of backing plate or floor side direction by following structures, even rest pad or support strip shape in obtuse angle are rigidly connected to sleeper, preferably make the welded type support strip, this obtuse angle opens towards the narrow avris of backing plate or floor, insulation strip is made the plate that its vertical view is wedge shape, its angle of wedge basically with support strip between the obtuse angle equate.Adopt this structure,, also can not cause the destruction of insulating even adjustment power is bigger.

At last, can adopt known insulation measures at backing plate with the zone that is connected sleeper bolt, promptly on the bolt of backing plate or floor and sleeper insulation sleeve is housed and is connected connecting with sleeper, and its top is covered by an insulating lid, and insulation sleeve wherein must prevent reliably that bolt from taking place directly to contact with the inner edge of corresponding backing plate or floor through hole and the last lower limb of this through hole.Certainly have at least two boards to form insulating layer in the lower limb district, thereby can avoid in this district, conducting bridge occurring.Can also avoid leakage current occurring by following structure, even the edge of top insulating slab perforate is greater than the edge of bottom insulating slab at above-mentioned through hole area.Also can further strengthen protection at last by insulating lid on the top outer cover.

Contrast embodiment shown in the drawings below, the present invention is further illustrated.Shown in Figure 1 is a partial sectional view that rail and/or track switch assembly is fixed on the device on the sleeper of the present invention; A vertical view that is device shown in Figure 1 along arrow II direction shown in Figure 2, Fig. 1 then is a view of the arrow I direction among Fig. 2; Shown in Figure 3 is the local amplification view of another embodiment.

In structure shown in Figure 1, be encased inside two plastic gaskets 2 and 3 on the steel sleeper 1, they all have electrical insulation capability and damping capacity, and floor 4 is fixed together by bolt connection 5 and sleeper 1 electric insulation.At floor or rail 6 clamped plates 7 above the backing plate 4, hook bolt 8, a dual spring packing ring 9 and an elastoplast liner 10 that inserts are fixed.

The liner 2,3 that is located between sleeper 1 and floor or the backing plate 4 is made by the electric insulation material, and has different basal planes.The periphery of the upper insulation plate 3 that pastes mutually with floor 4 in it at all respectively upwards all greater than the insulating slab 2 that is positioned at below it, and this periphery is made the drip limit, with guarantee liquid film directly from insulating layer 3 drips to sleeper 1 above, unlikely between floor 4 and sleeper 1 the continuous liquid film of formation.In addition, bolt connect 5 with the structure that is designed to guarantee insulate between sleeper 1 and floor or the backing plate 4, be provided with an insulating sleeve 11 for this reason, it is inserted in the corresponding hole 12 of floor, for example is used to prevent that being encased inside the bolt connection piece that a spring washer 14 constitutes with hook bolt 13 contacts with floor or backing plate 4.Promptly can accomplish bolt 13 and spring washer electric insulation by the corresponding construction of sleeve 11 with respect to floor or backing plate 4.In order to prevent that moisture and/or impurity from entering the bolt bonding pad under the harsh climate condition, also will be on its top cover after fastening bolt 13 insulating lid 15.

Compare and have longer spring travel yet make the spring washer 14 of dual spring cast and plastic gasket 2,3, even if when crossing car on sleeper under the effect of dynamic load(loading), this structure also can guarantee the reliable and stable of permanent position.

Be provided with sleeper 1 in a side of floor or backing plate 4 and be rigidly connected, rest pad that particularly welds together or support strip 16, its effect be keep floor or backing plate 4 with in order to the insulation strip of sleeper 1 or the insulation between the collets 17 of insulating.From Fig. 2 especially as can be seen, rest pad or support strip constitute an obtuse angle alpha mutually, simultaneously in order to accomplish reliable insulation, insulation strip or collets 17 are made into a plate that roughly is wedge shape from vertical view, and its angle of wedge equates with obtuse angle alpha between rest pad or the support strip 16.

In addition, rest pad or support strip 16 also have an effect, promptly bear the impact force that for example produces because of mechanical adjustment by dielectric support 17.Can accomplish under the condition of using other part of standardization, to realize the adjustment of floor or the permanent position of backing plate 4 on sleeper 1 by the size Selection of insulation strip or collets 17 in addition.In normal fixing, insulation strip 17 can be cracked in bigger insulating layer 3 scopes, engages with insulation strip 17 parts thereby form insulating layer 3, referring to shown in Figure 1.

In another embodiment shown in Figure 3, adopted a kind of insulating sleeve 11 of flange dish type, spring washer 14 partly sinks among the sleeve.This bolt connection is applicable to floor or backing plate 4 fixing on concrete sleeper 18, and its underpart electric insulation layer 2 has adopted another kind of form.With floor or backing plate 4 mutually close neighbour's electric insulation layer 3 also have bigger area, to prevent the generation of liquid film and leakage current.On bolt 4, also can add a vinyl cover.

Except embodiment shown in Figure 1, rail 6 fixing on floor or backing plate 4 also can pass through to clamp terminal and hook bolt, realize with spring clip or with Pan Deluoer (Pandrol) folder, wherein being used for the fixing bolt quantity of plate and the damping value of size and electric insulation plastic gasket 2,3 can select for use by relevant requirement.

Claims

1, rail (6) and/or track switch assembly are fixed on device on the sleeper (1), install employed backing plate or floor (4) and sleeper (1) at this, particularly be encased inside an electric insulation layer between the steel sleeper, and in the fixed area of backing plate or floor (4), also be provided with insulating layer, wherein between sleeper (1) and backing plate or floor (4), two-layer electric insulation material is set at least, it is characterized in that, the electric insulation layer (2 that overlaps, 3) make the plate that basal plane has nothing in common with each other, and the periphery that is positioned at the insulating slab (3) above the sleeper (1) greater than, be preferably in all respectively upwards all greater than the insulating slab that is positioned at this plate bottom (2) periphery.

2, device according to claim 1 is characterized in that, the periphery of the insulating slab that area is bigger (3) is made the drip limit.

3, device according to claim 1 and 2, it is characterized in that, on the sleeper (1) at least a narrow avris at backing plate (4) be provided with rest pad or support strip (16), and between the narrow avris of rest pad (16) and adjacent backing plate or floor (4), be provided with insulation strip (17).

4, device according to claim 3, it is characterized in that, rest pad or support strip (16) (α) shape and sleeper (1) in obtuse angle are rigidly connected, preferably make the welded type support strip, this obtuse angle opens towards the narrow avris of backing plate or floor (4), insulation strip (17) is made the flat board that its vertical view is wedge shape, its angle of wedge basically with support strip (16) between obtuse angle alpha equate.

5, according to any one described device among the claim 1 to 4, it is characterized in that, on the bolt (5) of backing plate or floor (4) and sleeper (1) insulation sleeve (11) is housed and is connected connecting, and its top is covered by an insulating lid (15) with sleeper.