RU76649U1 - REINFORCED CONCRETE BEDROOM WITH ELASTIC GASKETS ON THE SOLE - Google Patents

Abstract

The utility model relates to the field of railway transport, in particular, to reinforced concrete sleepers used in a link-type railway, as well as in leveling spans of a welded jointless track with a certain number of rail joints and in welded joints of lashes in which there are almost always geometric irregularities. Reinforced concrete sleepers have elastic gaskets made of polymer material. Elastic gaskets are located on the base of the sleepers in its under-rail parts. Elastic gaskets are fixed in the sleepers by immersing them in freshly laid concrete during the formation of sleepers. The technical result is to simplify the production process and reduce manufacturing costs. 1 ill.

Description

The utility model relates to the field of railway transport, in particular, to reinforced concrete sleepers used in a link-type railway, as well as in leveling spans of a welded jointless track with a certain number of rail joints and in welded joints of lashes in which there are almost always geometric irregularities.

The rail joint is the weakest zone of the railway. Ballast layer deformations intensively accumulate at the junction, track upsets and rail wear increase, and rail fasteners are upset.

In a jointless track with reinforced concrete sleepers, where the length of leveling spans with a certain number of rail joints is only 3-5% of the total length of the jointless track, up to 60-80% of the total cost of maintaining the track is spent on the maintenance of such sections. The reason for this is the increased dynamic vibrational effect on the crushed stone ballast of massive reinforced concrete sleepers with a rigid lower surface. For a jointless path, improving the operation of rail joints is an urgent task.

In a link with reinforced concrete sleepers, the influence of rail joints is especially aggravated.

One of the possible ways of working the track in the area of rail joints with reinforced concrete sleepers can be laying special sleepers with elastic elements under the rail joints.

Known reinforced concrete sleepers, consisting of a concrete body and reinforcement, in which on the supporting surface of the concrete body in the active zones

grooves are made for installing longitudinal elastic elements in them (see SU, No. 14548456, Е 01В 3/32, 1989).

The main disadvantages of the known design are:

- the lack of a reliable connection between the gasket and the concrete sleepers, due to which there is a movement of the gaskets under the sleepers and their rapid abrasion and crawl out from under the sleepers;

- the need for additional work and costs for attaching gaskets to sleepers;

- damage to gaskets when performing track work (tamping sleepers, etc.);

- hit of crushed stone in the space between the sole of the sleepers and the departed laying with the loss of the main function of the laying as a shock absorber and a guard against rubbing rubble.

Also known is a sleeper, consisting of a concrete body with reinforcement and elastic elements, and the elastic elements are made in the form of a facing coating of thermoplastic polymer, tightly covering the active zones of the supporting surface of the concrete body and 1 / 2-1 / 3 of its side surfaces (see RU Patent on PM No. 26228, ЕВВ 3/28, 2002).

The main disadvantage of this sleepers is damage to the facing of a thermoplastic polymer, especially on the side surfaces, when performing track works.

The technical result that can be obtained from the use of the proposal according to the utility model is the elimination of the above disadvantages inherent in the known sleepers during operation, simplifying the production process and reducing manufacturing costs.

The specified technical result is achieved due to the construction of reinforced concrete sleepers having elastic elements made of polymer material located on the sole of the sleepers in its under-rail parts, the elastic elements being made in the form of gaskets fixed in

sleepers by immersing them in freshly laid concrete when molding sleepers.

The claimed sleepers in shape, size, rail mounting and all other design features are similar to standard and standard reinforced concrete sleepers.

The peculiarity of this sleepers is that the elastic gaskets are integral parts of the sleepers made during the formation of sleepers.

These sleepers can provide the following advantages over conventional reinforced concrete sleepers:

- the dynamic vibrational effect of sleepers on crushed stone ballast, carried out through elastic gaskets, is significantly reduced and damped;

- particles of crushed stone along the plane of contact with the sleepers are pressed into the elastic gaskets and are not subjected to abrasion and crushing compared with direct contact with concrete sleepers;

- elastic gaskets on the sole are protected from damage during track work by the lower concrete edges of the sleepers;

- the presence of elastic gaskets significantly increases the shear resistance of the sleepers across the path, which is especially important in steep curves and on sections of the track in areas with increased temperature fluctuations throughout the year.

The essence of the utility model is illustrated by the drawing, which shows a longitudinal view of the sleepers, where 1 - sleepers, 2 - rail base, 3 - elastic gaskets.

Immersion of elastic gaskets over their entire thickness in freshly laid concrete is carried out using a special load and vibration damping on a vibration platform.

This eliminates all subsequent work on the assembly bases and in the way of attaching gaskets to sleepers, for example by gluing

or in other ways, and also provides reliable protection of gaskets from damage during tamping of sleepers or other track works. The production of sleepers according to the proposal is possible by standard technology, which simplifies the process of their production and reduces manufacturing costs.

Claims (1)

Reinforced concrete sleepers having elastic elements made of polymer material located on the base of the sleepers in its rail parts, characterized in that the elastic elements are made in the form of gaskets fixed in the sleepers by immersing them in freshly laid concrete when molding the sleepers.