SU192A1 - Car brake distributor for air brakes - Google Patents

Description

The proposed carriage distributor for air brakes aims to: gradual, at the request of the driver, release; application, without change, as with two, and with one line; maintaining a uniform load on the piston of the tormazny cylinder in each unit of the composition in the process of braking; maintaining, at the request of the driver, the established degree of braking automatically.

The drawing shows a longitudinal section of the distributor.

In the first position of the driver's crane handle, all the moving parts of the air distributor are arranged as indicated in the drawing. When replenishing the network, air from the main air duct enters channel 2 and from there through channel 3 (in the instrument body), chamber 4, channel 5 into the reserve tank and, simultaneously, through channel 6 to chamber 7.

At the fourth position of the driver's crane handle, when the pressure in the main air duct decreases, the pressure in the chamber 5 also decreases, thus disturbing the balance of the piston 8 and the last

moves in such a way that it closes channel 5; besides, the rod 9 closes first the channel 10 and then the piston 11 moves, which, when moving, closing the channel 21, abuts against the valve stem 12, moves the latter and thereby connects the chamber 7 with the chamber 15; As a result, the air from the reserve tank through channel 6, chamber 7, channel 16, channel 20, chamber 15 and channel 13 is directed to the torzy cylinder. When moving the handle of the operator's crane from the fourth position to the third, the air intake into the tormazny cylinder is finally stopped when the total load on the piston 11 is somewhat higher against the reduced load on the piston 8 from the chamber 2 side; the piston 11 will then take a middle position, leaving the channel 21 closed, at the same time freeing the valve 12, which, having moved, will stop further air intake from the reserve tank. With the next pressure drop in the main air duct, by setting the driver's valve handle to the fourth position, both pistons will again move to the right and open

air access to the tormazny cylinder, and when the knob is placed in the third position, they will gradually take up their middle position and, thus, again, air will not be allowed to enter the tormazny cylinder. These actions may continue as needed.

In the third position of the handle of the operator’s crane, the air distributor, with proper operation of tormaz (no leakage), is inactive (the pistons occupy a middle position). In the case of air leakage from the tormazny cylinder (skip cuffs or connection), the device automatically replenishes this leakage. It happens this way: when the pressure in the torma cylinder is lowered, the pressure in chamber 15 is reduced, which means that the load on the piston decreases and the last, mixing, and to the right, produces the same effect as in the fourth position of the crane handle, i.e. when the position of gradual braking. As soon as the pressure in the brake cylinder is restored, the pistons again take up their average position, i.e. the air flow stops. Due to this, having established the degree of braking, despite the leakage, is not reduced.

At the fifth position of the driver's crane handle (accelerated deceleration) in chamber 2, the pressure quickly decreases, causing the pistons to move to the extreme right position, at which valve 14 opens, and air from the reserve tank quickly rushes into the brake cylinder, i.e. there is a rapid deceleration. In the usual braking, the valve 14 cannot open, due to the slight force on the pistons S and 11 and the counteraction of the spring 19, the pressing valve.

In an emergency, i.e. when the driver's crane handle remains in the fifth position and, in addition, the emergency braking valve is also opened, the tormazny cylinder is connected to the main tank through the feed air duct, auxiliary tank and air distributor, which results in a significant increase in braking , since the pressure in the tormazny cylinder will already be equal to the pressure in the main tank, i.e., approximately 5 atm. instead of 4 atm. in the main air duct.

At the second position of the driver's crane handle (gradual unlocking), the pressure in chamber 2 rises (at the request of the driver), and children 8 and 11 from the rightmost position (after accelerated braking) and middle (after incomplete braking) move to the left; at the same time, the piston 11 becomes in the extreme left position and opens the channel 21, and the air from the tormazny cylinder, through the chamber 15, the channel 21, the atmospheric chamber 17 and the channels 18, goes into the atmosphere. The piston 8 does not reach its extreme position, since the pressure transferred from the piston 11 to it stops (the latter rests on the seat) and therefore the channel 3 and the hole 10 remain closed, i.e., the chamber 15 is disconnected from the chamber 2. When shifting the knobs to the third position stop the pressure increase in chamber 2 and, as soon as the pressure in chamber 15 decreases to such an extent that equilibrium of the acting opposite forces is obtained and even the load on the piston 11 to the right slightly decreases, both pistons move to the right to their Independent user position, and the channel 21 zakroets and hence further release of air to atmosphere ceases and umenp1enna degree tormazheni will be maintained the same as defined above, in the third position of the handle.

The first position of the driver's crane handle (accelerated unlocking): causes the following actions in the air distributor: the pressure in chamber 2 is quickly restored to normal, the pistons 8 and 11 occupy the positions indicated on the drawing (leftmost); The tormazny cylinder is connected to the atmosphere through channel 13, chamber 1G, channel 10, channel 21, channel 22, 23, atmospheric chamber 17, and channels 18.

Due to the fact that the area of the large piston 8 of the air distributor on the rod side is less than the opposite one, in order to maintain it in an equal air duct 1 and carriage

A spring 24 is installed at a different pressure with the obonchareum and, and the second between the four, a swarm 15 is opened, opened in a braking circuit. : is centered with the atmosphere through an orifice rail distributor for air 18 18, and b) accelerator valve brakes, characterized by co-14 and placed inside it

vocal application: a) a system of two valves 12, cutting off the message with an vapor tube 8 n 11, in which the stock of the .9 perimeter tank through channel 6 s

forms a burglar valve for; tormazny cylinder along channel 13 and

the channel 10 of the rod of the second piston and from opening when pressed on

Of which the first is located between the heads of the piston 11.

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lindre on channel 13 and camera 77, coNpatenp FIMZANCEBA no.

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