CN2404919Y

CN2404919Y - Orient fiber reinforced rail pad

Info

Publication number: CN2404919Y
Application number: CN 99241166
Authority: CN
Inventors: 童述藩; 郑世瀛
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-20
Filing date: 1999-09-20
Publication date: 2000-11-08
Anticipated expiration: 2009-09-20

Abstract

The utility model discloses an oriented fiber reinforced rail lower pad plate, which is composed of rubber layers and reinforced layers or a rubber layer and short cut oriented fibres. At least more than two reinforced layers and at least more than three rubber layers are mutually interlaced and laminated, or the short cut oriented fibres form bundle shapes or chain shapes or independent strip shapes in the mixing and smelting rubber layers. The utility model is used between a rail bearing and a steel rail on the railway mixing coagulation to provide elastic and buffering use. The utility model has the advantages that the lateral bulging can be effectively controlled, the favorable elasticity can be kept for a long time, the utility model has good abrasion resistance, the service life can be largely prolonged, and the manufacture technology is simple.

Description

The railway rail pad that directional fiber strengthens

The utility model relates to the buffer plate between railway construction field of engineering technology, particularly rail and the concrete sleeper.

Modern railway mostly uses the reinforced concrete sleeper supporting rail, in order to cushion, must under rail buffer plate be set.The appearance and size of backing plate, material, performance indications must meet the current standard of railroad industry.The present backing plate that uses, the overwhelming majority is simple rubber mat plate.It rolls under the long term with the fastener tightening force repeatedly wheel, in addition summer the road surface hot environment, the side direction bulging that the elastomeric material deformation of creep causes can lose its original elastic performance prematurely, thereby the replacement cycle is shorter, operation maintenance cost height.In recent years, developed several brute forces successively as the rubber cushion plate, for example No. 2283079 the Chinese utility model patent of announcing on June 3rd, 1998 discloses a kind of " powerful rubber mat plate on the pillow ".Its major technique feature is to be provided with one deck strength layer in the middle of backing plate, and it is the skeleton that is made of through crisscross braiding wire lath and nylon fiber rope.This class backing plate really can improve intensity, increase the service life, but also have complex structure, make difficulty, shortcoming that the technology cost is high.

The purpose of this utility model is intended to overcome above-mentioned shortcoming, the railway rail pad that provides a kind of directional fiber to strengthen, it can not only more effective inhibition because of the deformation of creep, reduce side direction bulging and contact surface abrasion, and simplified manufacturing process, and can reduce production costs, be convenient to large-scale production.

Goal of the invention of the present utility model is real like this:

The utility model is made up of rubber layer and enhancement layer, between rail and sleeper, it is characterized in that: enhancement layer is positioned at the centre of rubber layer, and have enhancement layer and the interlaced laying of rubber layer more than at least 3 more than 2 at least, what contact with rail foot surface is rubber layer, and what contact above with sleeper is rubber layer.

The utility model enhancement layer is short felt, cord fabric or the woven roving cut, the short felt of cutting, and woven roving arbitrary orientation in adjacent enhancement layer is laid, and cord fabric is 90 and spends staggered the laying in adjacent enhancement layer.

Bonding between the utility model enhancement layer and the rubber layer for pressing.

Enhancement layer is to cut the raw rubber that felt, cord fabric or woven roving be stained with after mixing and be pre-formed as prepreg again by back plate sizes cutting blanking with short, die cavity is inserted in layering, just becomes the backing plate goods of the directional fiber enhancing that has stromatolithic structure behind the matched moulds in vulcanizing press behind the hot-press vulcanization.

Goal of the invention of the present utility model also has a kind of implementation to be: by rubber layer with short cut directional fiber and forms, it is characterized in that: lack and cut directional fiber in mixing rubber layer, be pencil or chain or strip independently.It is chopped strand thigh yarn that the pencil weak point is cut directional fiber, the chain weak point cut directional fiber for short cut directional fiber along its length before and after overlap joint, the short directional fiber of cutting should be controlled material thickness and is not more than 3 millimeters when film-making is directed, and fiber volume fraction is not less than 5%.

The utility model is owing to the fiber that plays humidification in the backing plate is directed, and the shop layer evenly, the number of plies is many again, thereby backing plate has been played the effect of overall enhanced, strengthened the function of control backing plate lateral deformation, so backing plate can keep better elastic for a long time, and antifatigue and anti-wear performance are better, can increase the service life significantly; Also required each layer prepreg can be laminated into plate in the mill, disposable cutting helps large-scale production, reduces manufacturing cost.

Below in conjunction with accompanying drawing concrete enforcement of the present utility model is further described.

Fig. 1 the utility model rubber layer and enhancement layer constitute faces the sectional structure schematic diagram;

Fig. 2 the utility model rubber layer and short cut that directional fiber constitutes face the sectional structure schematic diagram.

Below in conjunction with drawings and Examples, the utility model is described in further detail:

The utility model is made up of rubber layer 1 and enhancement layer 2, between rail 4 and sleeper 5, enhancement layer 2 is positioned at the centre of rubber layer 1, and 4

enhancement layers

2 and 5 rubber layer 1 interlaced layings are arranged, what contact with rail 4 bottom surfaces is rubber layer 1, and what contact above with sleeper 5 is rubber layer 1.

The utility model enhancement layer 2 is short felt, cord fabric or the woven roving cut, the short felt of cutting, and woven roving arbitrary orientation in adjacent enhancement layer 2 is laid, and cord fabric is 90 and spends staggered the laying in adjacent enhancement layer 2.

Bonding between the utility model enhancement layer 2 and the rubber layer 1 for pressing.

Enhancement layer 2 is to cut the raw rubber that felt, cord fabric or woven roving be stained with after mixing and be pre-formed as prepreg again by back plate sizes cutting blanking with short, die cavity is inserted in layering, just becomes the backing plate goods of the directional fiber enhancing that has stromatolithic structure behind the matched moulds in vulcanizing press behind the hot-press vulcanization.

Goal of the invention of the present utility model also has a kind of implementation to be: cut directional fiber 6 by rubber layer 3 and weak point and form, it is characterized in that: weak point is cut directional fiber 6 in mixing rubber layer 3, be pencil or chain or strip independently, it is chopped strand thigh yarns that the pencil weak point is cut directional fiber 6, the chain weak point is cut directional fiber 6 and is overlapped along its length for the short directional fiber 6 of cutting, the short directional fiber 6 of cutting should be controlled material thickness and is not more than 3 millimeters when film-making is directed, and fiber volume fraction is not less than 5%.

Claims

1, a kind of railway railway rail pad of directional fiber enhancing, form by rubber layer (1) and enhancement layer (2), be positioned between rail (4) and the sleeper (5), it is characterized in that: enhancement layer (2) is positioned at the centre of rubber layer (1), and have enhancement layer (2) and the interlaced laying of rubber layer (1) more than at least 3 more than 2 at least, what contact with rail (4) bottom surface is rubber layer (1), and what contact above with sleeper (5) is rubber layer (1).

2, the railway railway rail pad of a kind of directional fiber enhancing according to claim 1, it is characterized in that: enhancement layer (2) is cut felt for short, cord fabric or woven roving, and in adjacent enhancement layer (2), weak point is cut felt, the woven roving arbitrary orientation is laid, and cord fabric is the staggered laying of 90 degree.

3, the railway railway rail pad of a kind of directional fiber enhancing according to claim 1 and 2 is characterized in that: bonding for pressing between enhancement layer (2) and the rubber layer (1).

4, the railway railway rail pad that strengthens according to claim 1 or 3 described a kind of directional fibers is characterized in that: shortly cut directional fiber (6) in mixing rubber layer (3), be pencil or chain or strip independently.

5, the railway railway rail pad of a kind of directional fiber enhancing according to claim 4, it is characterized in that: it is shortly to cut directional fiber thigh yarn that the weak point that is pencil is cut directional fiber (6), the weak point that is chain cut directional fiber (6) be short cut directional fiber (6) along its length before and after overlap joint.