RU2655395C2 - Brake leverage of railway freight car - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: brake leverage of the railway freight car contains a two-arm lever, which is pivotally connected to the brake cylinder rod with one end, and to the brake leverage auto-regulator with the drive and the dead lever guide with the other end. The axis of the dead point of the guide rod connection to the car frame is located at an equal distance from the axes of the lever holes intended for connection with the guide rod when installing cast-iron or composite brake pads. The dead point of the guide rod connection to the frame can be located with respect to the longitudinal axis of the lever from either side of it on the axis perpendicular to the line connecting the holes for connecting the lever to the dead point.

EFFECT: reducing the labour intensity of manufacturing brake leverage, material consumption and operating costs when changing the brake pads made of one material to the brake pads made of another material.

3 cl, 1 dwg

Description

The claimed invention relates to the field of railway transport, and in particular to designs of automatic brakes of freight cars with separate braking of each carriage of a carriage.

Known brake linkage (TRP) of a freight railroad car (patent RU No. 2390450, 02/02/2008), comprising a brake cylinder pivotally connected by a rod with a horizontal lever, which is pivotally connected to a dead center earring, with an autoregulator and its drive. The distance between the center of the fixed hinge of the dead center earring located on the side of the brake cylinder relative to the horizontal arm and the axis of the brake cylinder rod is equal to or greater within 10% of the distance between the center of the hinged connection of the horizontal lever with the rod of the brake cylinder and the center of the movable hinge of the dead center earring located on horizontal lever.

The proposed device TRP provides only one dead center for the earring and one hole in the horizontal lever for articulating it with the earring. In the operation of the car, the use of brake pads from various materials is required - from metal (cast iron) or from composite materials. When applying brake pads made of various materials, it is necessary to change the size of the shoulders of the horizontal lever. The presence of only one dead center and one hole in the horizontal lever for its articulation with the earring does not allow you to change the shoulders of the horizontal lever, which is a disadvantage of the proposed device according to patent RU No. 2390450.

A device TRP railway freight car (patent RU No. 133074, 06/13/2013 - taken as a prototype), containing a brake cylinder, the rod of which is connected to the leading shoulder of the two shoulders of the lever, and its driven shoulder is connected to the brake transmission regulator, while in the middle part of the two shoulders the lever has two openings for articulating it with a tightening (earring) and two separate openings are provided on the car frame details for articulating the second end of the tightening, which is a dead point. The described design of the device allows the use of brake pads, both metal (cast iron) and composite. The presence in the device of two blind spots located on the frame leads to increased material consumption and laboriousness, and also complicates the rearrangement of the tightening (earring) when replacing brake pads from one material to brake pads from another material, which is a drawback.

The task, which is aimed by the claimed device, is to reduce the complexity of manufacturing TRP, material consumption and operating costs when changing brake pads from one material to pads from another.

The problem is achieved in that in the claimed TRP of a railway freight car containing a brake cylinder pivotally connected by a rod with a horizontal lever, which is pivotally connected to the TRP auto-drive with a dead center earring connected pivotally to the frame bracket at the second end, while the axis of the pivot point equidistant from the axes of the holes of the lever, designed to connect with the earring of the dead center when installing brake pads made of metal (cast iron) or composite material.

With this design of the inventive device, one hinge is made instead of two, placed on the frame bracket for connecting the earring of the dead center, which leads to savings in material consumption, reduces the complexity of manufacturing and operating costs, i.e. there is no need to connect the earring with two other holes, as the earring at the dead center is constantly connected.

The essence of the claimed device of the brake linkage is illustrated by the drawing, which shows the TRP in the inhibited state of the car with the dead center location of the earrings on the bracket of the car frame. TRP railway freight car contains a lever 1 with holes:

A - for connecting with the rod 2 of the cylinder;

B - for connecting to the autoregulator 3 TRP;

B - for connecting with earring 4 when applying composite brake pads;

G - for connecting with earring 4 when using cast-iron brake pads;

D - for connecting with a puff 5 drive 6 auto-regulator 3.

Dead center E is located on the bracket 7 of the frame of the car. The distance l _to from the axis of the hole B of the lever to the axis of the hole of the dead center E is equal to the distance l _m from the point G of the lever to the axis of the hole of the dead center E. Equal dimensions l _to and l _m ensure the earring 4 is moved from the position of the hole B to the position of the hole G (when changing pads from various materials) and allows not to disconnect the earring 4 at the dead point E of the bracket 7.

The implementation of the claimed TRP leads to a decrease in the complexity of manufacturing, as well as the consumption of materials and operating costs when changing brake pads from one material to pads from another.

Depending on the design of the carriage frame, the dead center of the connection between the earring and the frame can be located in relation to the longitudinal axis of the lever on either side.

Claims (3)

1. The brake linkage of a railway freight wagon, comprising a two-arm lever pivotally connected at one end to a brake cylinder rod, the other to a brake linkage automatic adjuster with a drive and a dead center earring, characterized in that the dead center axis of the earring to the frame of the wagon is at equal distance from the axes of the lever holes intended for connection with the earring when installing cast-iron or composite brake pads. 2. Brake linkage according to claim 1, characterized in that the dead center of the earring is located on an axis perpendicular to the line connecting the holes for connecting the lever to the dead point. 3. Brake lever transmission according to paragraphs. 1 and 2, characterized in that the dead point of connection of the earring with the frame can be located in relation to the longitudinal axis of the lever on either side.

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