RU114059U1 - REINFORCED CONCRETE BLOCK AND FORM FOR ITS MANUFACTURE - Google Patents

Abstract

1. Reinforced concrete block containing a concrete body, in which reinforcement and embedded bushings are embedded, located in accordance with the holes of the rail pad, characterized in that the reinforced concrete block additionally has a plane protruding above the plane under the rail pad, while the ends of the additional bushings coincide with additional plane. ! 2. A mold for the manufacture of a reinforced concrete block, containing a formwork made in the form of a tray with strips installed with the possibility of detachment, and fasteners, characterized in that the lower surface of the tray is stepped, and the recesses with holes corresponding to the holes of the contact rail bracket are shifted down in relation to the surface under the rail lining, while the ends of the bushings are pressed against the surface of the mold with screws.

Description

Reinforced concrete block refers to the area of the upper structure of the railway track, in particular to devices for fastening rails to reinforced concrete sleepers in subway tunnels.

Known mortgage node reinforced concrete sleepers (options) according to Patent RU No. 2169226, EB 9/14, EB 3/28 with a priority of 09/11/2000. The essence of the invention lies in the fact that a hole is formed in the reinforced concrete sleepers in which the embedded element is fixed. In the upper part of the sleepers, above the embedded element, a profile hole is made. The faces of this hole are adjacent to the surfaces of the hollow plastic insert fixed in the sleepers. The disadvantage of this embedded node is the low accuracy of the installation of the embedded element in the coordinates, because the mortgage element is based on the holes made in concrete. The disadvantage is also the low structural rigidity. The Reinforced Concrete Block is also known and the mold for its manufacture according to the Certificate for Utility Model No. 28872, 7 ЕВВ 3/28 with a priority of May 22, 2002, which is chosen as the prototype. The reinforced concrete block contains a body in which reinforcement made of a steel bar and embedded bushings made of a polymeric material and having an internal thread are monolithic. The unit has a base pad for securing the rail support. The position of the bushings is ensured by the mold during manufacture. The form consists of a detachable metal casing, made in the form of a tray with straps for mounting on the side surfaces and plates on the ends, mounted with the possibility of rotation and fixing. On the bottom surface of the tray holes are made, located in accordance with the location of the holes of the rail liner, in which the polymer bushings are installed. Before pouring concrete, the bushings are pressed against the inner surface of the tray with screws. After pouring concrete, the screws are unscrewed, and the bushings remain monolithic in concrete in accordance with the location of the holes in the bottom plate of the tray. A disadvantage of the known solution is the limitation of functionality, because the reinforced concrete block has only one base surface for fastening only one node - the under-rail lining.

The aim of the proposed technical solution is to expand the functionality by creating an additional parallel plane offset from the base plane by a predetermined amount and installing an additional unit (s) on it, in particular, a contact rail bracket. In addition, this arrangement improves the accuracy of installation of each of the nodes and their relative position. The essence of the technical solution lies in the fact that in the reinforced concrete block, in addition to the base platform, in which the bushings are monolithic with the arrangement of the axes coinciding with the location of the axles of the rail support, an additional platform is made for the contact rail bracket, shifted to a height of "N". The ends of the additional bushings coincide with the plane of the additional platform and are also offset by the value of "N". Thus, the location of the axes of the bushings corresponds to the standards for the location of the axes of the bracket of the contact rail, and the ends of the additional embedded bushings coincide with the plane of the additional platform. The constancy and accuracy of the given dimensions of the embedded bushings for the rail support and for the bracket, both in plane and in height, is provided by the mold for the manufacture of the block. The bushings are installed in pre-marked and fabricated holes of the bottom of the metal form, fixed in position with screws and cannot be displaced and “float” during concrete pouring. Thus, the reinforced concrete block has a factory readiness and after laying in the path we get a fixed with high accuracy distance from the surface of the running rail to the sliding surface of the contact rail.

The essence of the technical solution is illustrated by drawings, where:

Figure 1 shows a longitudinal section of a reinforced concrete block along AA (Figure 3);

Figure 2 shows an end view;

Figure 3 shows a top view of a reinforced concrete block;

Figure 4 shows a side view of a mold for the manufacture of a reinforced concrete block with installed bushings and screws;

Figure 5 shows a sectional view of a mold for manufacturing a block according to BB (Figure 6) without bushings and screws;

Figure 6 shows a top view of a mold for the manufacture of a block without bushings.

The reinforced concrete block consists of a concrete body 1 having slopes on the lateral surfaces, reinforcement 2 made of a steel bar and embedded bushings 3. The embedded bushings are made of polymer material, have a corrugated outer surface and a thread along the inner diameter. The upper part of the block is formed by two parallel surfaces: surface "a" - the base for installing the rail lining 4 and an additional upper surface "b" - the base for installing the bracket of the contact rail 5. The surface "b" protrudes above the surface "a" by the amount of "H" . The under-rail lining and the contact rail bracket are attached to the block with reinforced concrete screws 6. The location of the axes of the embedded bushings is determined by the standards for the location of the holes of the mating nodes (rail lining and the contact rail bracket) and is provided by the location of the holes in the lower metal plate of the mold during the manufacture of the block. The combination of the end surfaces of the bushings, both in planes and in height, with the base planes of the block when manufacturing the lower plate of the mold on the metal planes, ensures high accuracy of the relative position of the mating units during assembly and installation on the way. The mold for manufacturing a reinforced concrete block consists of a profile tray 7, which can be both detachable and integral from a steel sheet fastened at the ends of the slats 8. The lower surface of the tray is stepped, and the surface under the base surface of the rail lining is made above the surface under the bracket contact rail by the value of "H". On the lower stage, holes are made for the contact rail bracket, and on the upper stage, holes are made for the rail lining. Before pouring concrete on the bottom surface of the tray, in accordance with the holes made on the upper and lower steps, sleeves 3 are installed and then the sleeves are fixed to the mold with screws 6. After installing and fixing the sleeves, the mold is filled with concrete. Rigid fastening of the bushings with screws, both in planes and in height, eliminates the possibility of "surfacing" and the displacement of the axles of the bushings when pouring concrete, and in the subsequent assembly of nodes, provides factory readiness.

Claims (2)

1. The reinforced concrete block containing a concrete body, in which reinforcement and embedded bushings are located, located in accordance with the openings of the rail liner, characterized in that the reinforced concrete block additionally has a plane protruding above the plane under the rail liner, while the ends of the additional bushings coincide with additional plane. 2. A mold for manufacturing a reinforced concrete block, comprising a formwork made in the form of a tray with detachable slats and fasteners, characterized in that the lower surface of the tray is stepped, and the recesses with holes corresponding to the holes of the contact rail bracket are shifted down in relation to the surface under the rail lining, while the ends of the bushings are pressed against the surface of the mold with screws.