SU1320105A1 - Air distributor for single-line brake drive of trailer - Google Patents

Abstract

The invention relates to the field of transport engineering. The purpose of the invention is to simplify the design and increase the speed of emergency braking. In section 13 of case I, an acceleration piston 15 is installed, the action of a pinch 17 on a follow-up mechanism 2. The cavities 20 and 21 communicate with each other through a gap 19 forming a throttle. With a sharp decrease in air pressure in the connecting main 10, a non-repressive pressure in cavities 20 and 21 is created. The piston 15 is displaced, acting by the rod 17 on the mechanism 2, providing fast filling of the brake chambers 12. 1 sludge. 12 Yu Oh oi

Description

This invention relates to trans-port machinery, in particular, to pneumatic brake systems of wheeled vehicles.

The purpose of the invention is to simplify the design and increase speed in emergency braking.

In the drawing, an air distribution circuit is shown in principle for a single-conductor brake actuator.

The air distributor contains in the housing 1 a trace w, a mechanism 2 in the form of pistons 3 and 4 rigidly interconnected, a check valve 5, a partition 6. The pistons 3 and 4 with a partition 6 form cavities 7-9, communicating 1, respectively with a connecting line 10, the receiver 11 and the brake chambers 12 of the vehicle. In addition, cavity 8 is in communication with power supply 1, its line 10 through a check valve 5. Section 13 with partition 1 is fixed to housing 1 and accelerate; A piston 15 with a return body 16 and a piston njTOKOM 17, which is placed in a central bore 18, made in the partition 14. The piston 15 is located with a throttle clearance 19 relative to the walls of section 13 and divides it into lower and upper cavities 20 and 21. The bottom 20, formed by 15 and the partition 14, is connected to the cavity 7 communicated with the main 10.

The bypass valve 22 has three positions.

In position A, the brake chambers 12 and cavity 9 communicate with the atmosphere and are separated from the receiver 11. In position B (intermediate), the brake chambers 12 and floor 9 are separated from the atmosphere and the receiver P. In position C, the brake chambers 12 and wall 9 communicate with the receiver 11 and disunited with the atmosphere.

The air distributor for a single-wire trailer brake drive operates as follows.

In the decelerated condition of the vehicle, the receiver 1 1 is filled from line 10 through the check valve 5 and the cavity 8. The bypass valve, :: 22 is in position A. The brake chambers 12 are in communication with the atmosphere.

During service braking of a transport means 1, the pressure in line 10 and, consequently, in cavity 7 decreases with little intensity, the return valve 5 closes, as a result, the trace Editor M. Tsitkin Order 2566, 1 (5

Compiled by S. Makarov

Tehre.a I. VeresKorrektor A. Obruchar

Circulation 598Po.Apisnoe

VNIIPI CCCF State Committee for Inventions and Discoveries

I3035, L Oskva, ZH-35, Rau1ieka nab., 4/5 Production and Printing Enterprise, Uzhgorod, ul. Design. four

driving mechanism 2 moves downward. At the same time, the pressure also decreases in the cavity 20, and since the intensity of this decrease is small, the air will also slip from the cavity 21 into the cavity 20. The pressures in the cavities 20 and 21 equalize. Pore 15 remains in place and does not act on the next mechanism 2. The diffuser switches to position B. The brake chambers 12 are uncoupled from the atmosphere and communicate with the receiver 11. The next action of the air distributor is when the bypass valve 22 moves to position B when brake chambers 2 are separated from receiver 11 and atmosphere, this happens when

5, the alignment of the force; 1, acting from two sides on the tracking mechanism 2 due to feedback of the brake chambers 12 with the cavity 9.

In case of emergency braking, the pressure in position 7 and, consequently; 1no, and in the cavity 20

0 falls relatively quickly. The air does not have time to flow through the gap 19, the pressure in the bed 21 for some time is higher than in the cavity 20. This causes the piston 15 to move, which through

five

The rod 17 has a further effect on the next mechanism 2, which contributes to the rapid transfer of the air distributor to position B.

Synthesis Formula

Air distribution; for the single-wire brake of the gitsep, containing a housing divided by a partition into a section in which the follower mechanism controls the bypass valve,

and a section in which a spring-loaded accelerator piston is placed, the rod of which is passed through the opening in the partition to act on the trace of the mechanical mechanism, while in the housing there are channels for communicating the cavities of the next mechanism with the connecting main, one of which has a reverse K.Papan, and the cavities, divided by 1e by the accelerating piston, are interconnected by a throttle channel, differing in that.m, in order to simplify

design and higher} 1 and speed fi extrepny braking, the throttle channel is formed by the gap between the cylindrical surface of the accelerator and the wall of the housing, and the cavity between the accelerator and the partition is connected to the channel connected to the connecting line.

Claims (1)

An air distributor for a single-wire brake drive of a trailer, comprising a housing divided by a partition into a section in which the follower mechanism controlling the bypass valve is located 25 and a section in which the spring-loaded acceleration piston is located, the rod of which is passed through the hole in the partition to act on the follower mechanism, In this case, channels are made in the housing for communicating the cavities of the follower mechanism with the connecting line, in one of which a check valve is installed, and the cavities are separated by a the core piston are interconnected by a throttle channel, characterized in that, in order to simplify the design and increase speed during emergency braking, the throttle channel is formed by the gap between the cylindrical surface of the accelerating piston and the housing wall, and the cavity between the accelerating piston and the baffle is connected to the channel, connected to the trunk.