SU1532401A2 - Suspension of brake shoe with block for railway vehicle - Google Patents

Abstract

This invention relates to railway transport. The purpose of the invention is to increase reliability. The suspension includes tu 1, pivotally attached at one end to the shoe 3, the other to the frame 2 of the carriage, and a rod 6, one end of which is fixed to the shoe 3, the other is mounted in the hole of the bracket 5 ti 1 and leans on it through the spring 8 and nuts 7. The middle part of the rod 6 in the area of its working movements through the hole in the bracket 5 is made curved along an arc of a circle drawn through the center of the hole from the center of the pivotal mount of the shoe to t 1. The rod 6 is rigidly connected to the shoe. When the shoe 3 oscillates with the amplitudes of displacements of the rod 6 larger than the static deflection of the spring 8, the rod 6 is not lowered under the action of its own weight onto the edge of the bracket hole at the moment of unloading the spring 8, and due to the rigid attachment is kept in the centered position. 1 il.

Description

WITH

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N9

four

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rests on it through the spring 8 and nuts 7. The middle part of the rod b in the area of its working movement through the hole. In the bracket 5 is curved along an arc of a circle drawn through the center of said hole from the hinge center of the shoe to the rod 1. Rod b st tied with a shoe tough. With a wheel

Baths x of the shoe 3 with the amplitudes of movement of the rod 6 larger than the static deflection of the spring 8, the rod 6 at the time of unloading the spring 8 does not lower under the action of its own weight on the edge of the bracket hole, and due to the rigid mounting it is held in the centered position, 1 sludge.

The invention relates to railway transport, in particular to braking devices of passenger cars.

The purpose of the invention is to increase reliability .20

The drawing shows the suspension, the overall appearance.

The suspension includes tu 1 hinged to the frame 2 of the trolley. A brake shoe 3 with a block Ts is hinged to the lower end of the rod 1. The bracket 5 is welded with a hole for the passage of the rod 6, rigidly mounted on the shoe and {supported by the other end on the bracket Qayn 5 through the nuts 7 and spring. Bar 6 on the section of lero working movements through the hole in bracket 5 is curved along an arc of a circle (radius R) through the center of the hole in the bracket from the center O of the hinge to the shoe. The rigidity of fastening the rod 6 to the shoe 3 while maintaining the hinged connection of the main head of the rod 40 and 6 to the shoe is provided in this construction by introducing an additional connection in the form of a rod 9, one end of which is welded to the rod 6, the other is hinged on the neck 45 of the linch pin 10, inserted into the bashmak hole.

Other variants of rigid fastening of the rod on the shoe are possible, for example, by directly attaching the rod to the shoe by means of welding or threaded fasteners. In this case, however, it becomes difficult to install (dismantle) the suspension of the shoe as a whole; the challenge is to compensate for the inaccuracies in the manufacture of parts and their assembly on the alignment of the rod 6 in the hole of the bracket 5;

In the 8th version of the construction (see drawing), the mounting of the suspension does not cause any difficulties and is carried out in the same way as in the serial design, with the only difference that the rod is fixed on the shoe not at one, but at two points. Compensating the effect of manufacturing inaccuracies on the coaxiality of the rod and the holes in the bracket is achieved in this design after assembling the suspension by bending or extending the middle part of the rod 9 (manually using an auxiliary rod-mount or hammer), for which the bar 9 is not straight, but straight in an arc. For example, if after assembling the suspension unit the rod goes into the hole of the bracket closer to the upper wall of the hole than to the bottom, then bar 9 needs to be slightly straightened; if closer to the bottom, bend in addition so that rod 6 is in a position coaxial with the hole.

In this design, bar 9 does not carry the load to hold the shoe with the block (rod 6 takes this load). The rod 9 senses the weight of the rod 6 and must maintain its position centered on the aperture in operation.

Suspension brake shoe works as follows.

. With the working movements of the shoe, caused by adjusting its position relative to the wheel or oscillations from. dynamic action with the amplitudes of the rod displacements smaller than the static spring deflection, the shoe performs rotational movements around the center of the lower hinge rod, in which the rod 6, bent along an arc of a circle drawn from this center, remains centered in the bracket hole. When large.

Claims (2)

1. Suspension brake shoe with block rail 1532 01 by auth. St. If T29109, characterized in that, in order to increase reliability, it is provided with an element that blocks the hinge connection of the rod with the shoe. 2. Suspension pop. 1, different from the fact that the shoe has a hole into which the pin is inserted, and the blocking element is made in the form of a bar, one end of which is welded to the rod, and the other is hinged on the pin pin.