SU69686A1 - Brake Release Device - Google Patents

Description

The invention relates to the improvement of a trunk organ known in the art used in brake air distributors. The device contains a main piston, two spools - the main and equalizing - of which one (main) is connected with the main piston with a gap in the direction of their stroke, and the other (equalizing) is rigidly connected with the main piston.

The device is driven by a main piston.

The aim of the invention is to provide a constant sensitivity when releasing the brake regardless of fluctuations of resistance to movement of the slide that are possible during operation. For this, the front stop of the main slide in the piston frame (from the side of the piston disk) is made in the form of a spring buffer, and the main slide is provided with a channel having outlets in the lower and upper sides of the slide. The lower outlet of this chamber when the mastral organ is braked is connected with the atmospheric hole in the spool mirror, while the upper outlet of this channel is blocked by an equalizing slide when the spring buffer is depressed, and when it is compressed it opens and communicates with the spool chamber.

FIG. 1 shows a diagram of the proposed device, with reference to the well-known scheme of the Westinghouse triple valve, in the released brake position; FIG. 2-5, the same scheme in other operating positions: FIG. 2 — in the deceleration position, FIG. 3 - the beginning of the holidays, FIG. 4 shows forced tempering in the case of increased spool resistance; FIG. 5 - extreme release position.

The drawing shows the following designations; 7 — main spool, 2 — equalizing spool, 3-main piston, 4 spring buffer, 5-channel of providing tempering and 6 — atmospheric channel.

In the released state of the brake (Fig. 1), channel 5 is blocked both from the bottom and from above by the balancing valve; in the brake position (Fig. 2), the lower opening of the channel 5 communicates with the atmospheric channel 6,

83 the upper hole is blocked by an equalizing spool. FIG. 3 shows the position at the beginning of the holiday, when the spring buffer 4 touched the spool 2. If the resistance of the spool 3 does not exceed the norm for which the initial compression of the spring 4 of the buffer 4 is calculated, then the main body goes directly to the position of the holiday (Fig. 1) if If the resistance of the spool exceeds the norm, then under the effect of increasing pressure difference on the main piston, due to the increase in pressure in the line, the piston moves further to the right, compressing the buffer spring 4. At the same time, tion valve, opening the upper opening of the channel 5, the slide valve produces a connection chamber and a reserve tank with the atmosphere. The pressure drop on the right side of the main piston causes it to go to the extreme release position (Fig. 5), from which, after charging the reserve tank, the piston resiliently returns the spring of buffer 4 to the position shown in fig. I. Thus, a pressure difference is provided in the line and, in a spare tank, corresponding to the elasticity of the spring buffer 4. Subject of the invention A brake release device for use in an air distributor comprising a main piston and two spools controlled by this piston ( main and equalizing), coupled to the piston - rigidly equalizing, and the main one with a gap in the direction of travel is characterized in that the emphasis of the main slide in the frame of the piston is designed as gun buffer 4, and the main spool 7 is equipped with a channel 5, which, with normal resistance to movement of the main spool during tempering, is blocked by an equalizing spool, when this resistance increases, it opens and produces a message to the slide valve with the atmosphere.

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