RU215034U1 - Rail anchor bolt - Google Patents

Abstract

The utility model relates to the superstructure of a railway track and is intended for attaching rails to reinforced concrete, polymer concrete or composite under-rail bases. SUBSTANCE: rail fastening anchor bolt contains an upper part and a lower part adjoining it. The upper part is made in the form of a smooth rod, smoothly turning into a threaded part, and has surfaces for interacting with the clamping element of the fastening and fixing terminal, positioning the fastening elements. On the lower part of the anchor bolt there are horizontally located platforms having an oval shape, a shank made in the form of a straight rod. The upper and lower parts of the anchor bolt are connected by a transition section. EFFECT: ensuring load-resistant fastening bolt element and reliable operation of the rail fastening unit.

Description

Technical field

The claimed utility model relates to the design of the superstructure of the railway track, namely to rail fastenings, and is intended for attaching rails to reinforced concrete, polymer concrete or composite under-rail bases, such as sleepers, beams, slabs, blocks, beds and others, and can be used on main railway lines, including high-speed ones, in tunnels, subways and on sidings of industrial enterprises.

State of the art

Known embedded bolt for rail fastenings according to GOST 16017-2014, having a rod with smooth and threaded parts, a T-shaped head with two flat parallel faces, a square head and made in the form of a tetrahedral truncated pyramid transitional section from the said head to the rod, moreover, the distance between the mentioned flat faces of the head refers to the nominal diameter of the bolt thread in the range from 1.114 to 1.023.

Also known in the prior art is a terminal-embedded bolt (RU 6397 U1 1998.04.16) having a rod with smooth and threaded parts, a non-circular head, a head having at least one flat face and a transition section from the head to the rod, characterized in that that the transition section from this flat face to the rod has a conical surface.

The disadvantage of prior art designs is their lack of stability in the seat of the under-rail base due to the small contact area of the lower rod part of the bolt, leading to disruption of the fastening unit and the development of defects, followed by destruction of the under-rail base.

Disclosure of invention

The task that the proposed utility model is aimed at is the creation of a fastening bolt element that is resistant to the perception of loads transmitted by rolling stock.

The technical result is achieved by the fact that the rail fastening anchor bolt contains the upper part and the lower part adjacent to it, while the upper part is made in the form of a smooth rod, smoothly turning into the threaded part, and has surfaces for interacting with the clamping element of the fastening terminal and fixing, positioning intermediate fastening elements, and the lower part of the anchor bolt is a shank made in the form of a straight rod having horizontally located platforms having an oval shape, while the transition section can be made in the form of a straight rod, with the possibility of installing a damping element on it.

The technical solution is illustrated by graphic materials.

Brief description of the drawings

in fig. 1 - anchor bolt: front view and top view;

pos.1 - smooth rod, upper part;

pos.2 - threaded part;

pos.3 - shank, lower part;

pos.4 - shank, straight section;

pos.5 - shank, horizontal platforms;

pos.6 - transition section.

Implementation of the invention

SUBSTANCE: rail fastening anchor bolt contains an upper part and a lower part adjacent to it, while the upper part is made in the form of a smooth rod (1), smoothly turning into a threaded part (2), and has surfaces (2) for interacting with the clamping element of the fastening terminal, as well as a surface (1) for fixing and positioning the fastening elements, and the lower part of the anchor bolt is a shank (3) made in the form of a straight rod (4) having horizontally located oval platforms (5), while the transitional section from the shank to the anchor brackets is presented in the form of a conical rod (6), also the transition section can be made in the form of a straight rod, with the possibility of installing a damping element on it.

Anchor bolt is made of high-strength iron alloy. The material must withstand the loads taken by the anchor bolt without losing its strength characteristics.

Installation of the anchor bolt rail fastening is carried out in a known manner, by rigidly installing its lower part in the under-rail base, for example, by embedding in a concrete base. To form a rail fastening unit, two anchor bolts are used on the upper parts of which rail fastening elements are put on, including elastic terminals installed on the seats of the under-rail lining, with their end sections on the insulating element, the central loop of the terminal is located along the axis of the upper part of the anchor bolt. The clamping of the terminals is carried out by screwing the nut onto the anchor bolt and changing the position of the central loop until it contacts the protrusion in the rail pad.

The above design of the rail fastening anchor bolt, which provides for the execution of the lower part of the anchor bolt, the shank, in the form of a straight rod having horizontally located oval-shaped platforms, rigidly installed in the under-rail base, makes it possible to achieve reliable operation of the rail fastening unit.

Bibliography:

1) GOST 16017-2014 Embedded bolts for rail fastenings of the railway track Specifications;

2) RU 6397 U1, IPC Е01В 9/00, Terminal bolt; Published: 1998.04.16

Claims (2)

1. Rail fastening anchor bolt, containing the upper part and the lower part adjacent to it, while the upper part is made in the form of a smooth rod, smoothly turning into the threaded part, and has surfaces for interacting with the pressing element of the fastening and fixing terminal, positioning the intermediate fastening elements , and the lower part of the anchor bolt is a shank made in the form of a straight rod having horizontally located oval-shaped platforms, while the transition section from the shank to the upper part is presented in the form of a conical rod. 2. Anchor bolt rail fastening according to claim 1, characterized in that the transition section can be configured to install a damping element on it.

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