RU2278915C1 - Pointless switch mechanism - Google Patents

Abstract

FIELD: railway transport.

SUBSTANCE: invention can be used for improvement of connection and branching of rail tracks. Proposed switch mechanism contains two pairs of change-over rail throat pieces installed for displacement of their ends within the limits providing throw over of switch from one direction to the other, and bridges made of steel sheet under butt joints of movable ends of these throat pieces with track rails abutting the switch mechanism. Each pair of change-over throat pieces in movable end is furnished with grip consisting of two angle plates with vertical webs tightly pressed to each other and passed through hole in bridge. Dimensions of hole and horizontal webs in lower part of grip are chosen to provide getting of horizontal web of one of angle plates under sheets of bridge in each extreme positions of change-over throat pieces and to prevent vertical displacement of end faces of change-over rails relative to sheet and end face of abutting track rail.

EFFECT: increased service life of pointless switch mechanism owing to provision of soldiery operation of their change-over throat pieces with bridges and butt-jointed track rails.

1 dwg

Description

The present invention relates to the field of railway transport and can be used to improve the connections and ramifications of rail tracks.

A known construction of a switchless turnout switch (S.V. Amelin. Connections and intersections of rail tracks. M., Transzheldorizdat, 1957, pp. 10-11, Fig. 14), containing two pairs of translated rail cuttings installed with the possibility of rotation in horizontal the plane around the root joint and the movement of their ends within the limits that ensure the transfer of the arrow from one direction to another. The design flaw is caused by the presence of a joint in it at the beginning of the arrow, which cannot be connected by butt plates in any way, since in the process of operation of the arrow, the cuttings in this joint should change their position relative to the main track rails adjoining them. When the wheel approaches this joint from either side, a vertical step will inevitably form in it. Therefore, with a woolly movement, each passing wheel hits the end of the track rail, and the anti-wool wheel hits the end of the transfer cabin, which leads to accelerated chipping of the metal of the rail heads at their ends and reduces the operational life of both elements.

Known needleless turnout (RF patent No. 2148687 7 E 01 B 7/00, 13/00; 03/11/1998) - a prototype containing two pairs of translated rail cabin installed with the possibility of moving their ends within, providing the arrow from one direction to the other, and steel sheet bridges under the joints of the movable ends of these cuttings with track rails adjacent to the turnout.

The design flaw is that the problem of eliminating steps at joints is only half solved by the presence of bridges: indeed, when the wheel approaches the considered joint from the translation side in place with a bridge under vertical load, both cuttings and track rails are equally reduced. to. the latter are rigidly attached to the bridges with terminals. Therefore, when rolling stock is moving in a woolly direction, steps at the junction do not appear.

When the wheel moves in the opposite direction, the track rail lowers along with the bridge, and the wheelhouse remains on weight, since they are not connected with the base. Operational observations of the operation of prototypes of needleless turnouts at the Kachkanarsky GOK and Nizhny Tagil Metallurgical Combine showed that in the joints under consideration there is a crushing and chipping of the ends of precisely the cuttings, which are more expensive elements of joined pairs. Thus, the design flaw is the accelerated development of operational defects in the details of the switch, which reduce its operational life.

The objective of the invention is to increase the service life of arrowless turnouts on the road by ensuring the joint operation of their cuttings with bridges and dockable track rails.

The technical result is achieved by the fact that in the proposed design, a needleless turnout switch containing two pairs of translated rail cutting, installed with the ability to move their ends within, providing the arrow from one direction to another, and steel sheet bridges under the joints of the movable ends of these cuttings with rails adjacent to the turnout switch, each pair of cuttings in its movable end is equipped with a grip made of two corners with vertical shelves, tightly squeezed to each other and passed through holes in the bridge, and the dimensions of the hole and horizontal shelves in the lower part of the grip are selected so that in each extreme position of the cuttings the horizontal shelf of one of the corners comes under the bridge sheet and prevents vertical movement of the ends of the transfer rails relative to the sheet and end of adjoining track rail.

The essence of the proposed technical solution is illustrated using the drawing.

The drawing shows two corners 1 with vertical shelves 2 tightly pressed against each other, placed between the transfer cuttings 3, and the fastening bolt 4 rigidly connected to them. If necessary, this connection can be provided with two bolts. The vertical shelves of 2 corners 1 are passed through holes 5 in the bridge 6, and their horizontal shelves 7 and 8 go under the lower plane of the bridge 6 with the minimum clearance δ necessary for the free (without jamming) movement of the transfer cabin 3 from the left to the right and back .

The design works as follows.

In the drawing, the wheelhouse 3 along with the grip from the corners 1 are shown in the extreme left position. In this case, the vertical movement of the cuttings 3 relative to the bridge 6 is limited by the horizontal shelf 7. After the arrow is moved to a different direction, the ends of the cuttings 3 together with the gripper are in the extreme right position. In this case, the shelf 7 goes out of interaction with the bridge 6, and the role of the limiter of vertical movements assumes the shelf 8.

Thus, when the wheels move in any direction of translation, the cutter soles can rise above the sheet surface by no more than a gap value δ of the order of 1 mm, and the vertical step itself at the junction will not exceed the specified limit.

Currently, according to performance tests, these steps are: under empty wagons 6-8 mm, and under locomotives and loaded wagons exceed 10 mm. Therefore, it can be expected that the proposed technical solution, which allows reducing the intensity of crushing and chipping of the ends of the cuttings at the joints by 6–10 times, will practically eliminate the influence of this operational defect on the service life of the structures under consideration.

Claims (1)

A needleless turnout switch containing two pairs of rail cuttings installed with the possibility of moving their ends within, providing the switch from one direction to another, and steel sheet bridges under the joints of the movable ends of these cuttings with track rails adjacent to the turnout, different the fact that each pair of cuttings in its movable end is equipped with a grip made of two corners with vertical shelves, tightly pressed against each other and passed through the hole bridge, and the aperture size and horizontal flanges at the bottom of the capture chosen such that in each extreme position transferable cuttings horizontal leg of one of the corners of the sign sheet under the bridge and vertical movement prevented transferable rail ends relative to the sheet and adjacent an end of the rail track.