SU1414688A2 - Three-line two-way pneumatic control valve - Google Patents

Description

The invention is an improvement of the invention according to the authors of the art. iNll94739.

The purpose of the invention is to increase the durability.

j Fig. 1 shows constructively with the pneumatic distributor, it is included in the brake system of the vehicle when the organ is connected with the atmosphere; Figure 2 is the same when the executive body communicates with a pressure source; on fig.Z - the same, with the closed Ynevmospremya distributor

i The valve manifold consists of sorpus 1 and clam 2, inlet 3, you have added 4 and exhaust 5 cavities. The input cavity 3 communicates with the source 6 of compressed air, the output L with brake chamber 7, In the bore; JKopnyca 1 is fixed to the upper sealing ring 8, and in the bore of the cover 2 - to the lower sealing ring 9. Between these rings there is a flat valve 10 clamped.

Sealing rings 8 and 9 have. : the same shape and size with face surfaces 11 and 12 of larger and smaller diameters, in contact with the upper and lower planes of the gate 10. In the upper 8 and lower 9 sealing rings, radial holes 13 and 14 are filled along the radius of the flat gate 10 with pusher 15, which is spring-loaded by spring 16 relative to housing 1 and connected by means of spring 17 to control valve 18,

Trilinear two-way pneumatic distributor works as follows.

Inhibited. chamber 7 (figl) is connected to the atmosphere through outlet 4 and exhaust 5 chambers and radial through holes 14. The flat gate 10 is in the upper position under the action of the spring 16, compressing the upper sealing ring B and the non-recess hole 13 the flat gate equilibrium under the action of the spring 16 on the one hand and the elastic forces of the ring 8 and the air pressure on the gate surface on the side of the inlet chamber 3 on the other side.

In order to perform braking, it is applied to the pull 18, which, through the spring 17, transmits the force to the pusher 15. The pusher 15, compressing the spring 16, moves the flat gate 10 downward, first the outlets 14 and then opening the inlets 13 of the sealing rings 9 and 8 Fig.2) The air pressure will flow into the brake chamber 7 and act on its piston

At the same time, the air pressure, increasing, affects the flat gate IO from below from the side of the exit chamber 4. Under pressure, the flat gate 10 begins to move upwards until the inlet holes 13 are closed (Fig. 3).

At this moment, an equilibrium of forces acting on the flat gate 10 is established; on the one hand - the force of the spring 16, the elastic force of the ring 9 and the air pressure from the input chamber 4; on the other hand, the force of the rod 17, transmitted through the pushing cable 15, the elastic force of the ring 8 and the air pressure from the input chamber 3.

To increase or decrease the pressure in the brake chamber 7, increase or decrease the force on the pull 18. This disrupts the balance of forces on the flat gate 10. It moves up or down, opening the inlet 13 or outlet 14 holes. The air pressure in chamber 7 changes to the next balance of forces on the flat gate 10.

When braking is stopped, they are applied to gt 18. The flat breech 10 under the influence of the spring 16 rises upwards, opening the outlets 14 and connecting the brake chambers to the atmosphere (Fig. 1). I Thus, such an implementation of the three-linear two-position pneumatic distributor allows one to significantly increase its durability and simplify the manufacturing technology by making the radial through holes in the sealing rings.

FIG. 2

Claims (1)

THREE-LINE TWO-POSITION AIR DISTRIBUTOR by ed. No. 1194739, characterized in that, for the purpose of increasing durability, radial through holes are made in the upper and lower seal rings.