SU42136A1 - Air brake driver's crane - Google Patents

Description

The air brakes operator crane is shown in FIG. 1, 2, 3, 4, 5, b and 7 in different positions of the spool in the slide valve; FIG. 8 shows a diagram of the upper face of the lower slide; FIG. 9 is a diagram of the lower face of the lower valve; FIG. 10 diagram of the upper face of the middle spool; FIG. 11 diagrams of the lower face of the middle spool; FIG. 12-side view of the middle spool; FIG. 13-scheme of the lower face of the upper spool; FIG. 14 is a face box diagram.

The driver’s crane consists of the following components: two small pistons 5 and 4, a spring corresponding to a pressure of 5 atm., And in the spool box there are three spools, which work on backs b, 7 and 8. The lower spool runs respectively to the driver’s wish through the crank handles, having eight positions, and the remaining two spools take their position correspondingly to the position of the lower spool, having air pressure in the spool box from the main tank. In the first position (Fig. 1), the operator's valve of the spool box communicating with the main reservoir is connected to the main highway by a straight-side cut 9 in the lower face of the spool 8, opening

the JO main line slot in the face of the spool box (Fig. 1, 9 and 14). Mainly open the window 77 of the control chamber 2 at the spool 8 (Fig. 1 and 8).

Thus, the air pressure in all chambers and in the main line is the same with the main tank at the first position of the driver's crane, and the atmospheric windows are closed (Fig. 1). In the second position of the driver's crane, the message of the main line with the main tank by the lower slide 8 through the window W in the face of the slide valve is closed (Fig. 2, 8 and 14). In this position, the main line communicates with the spool box through the window 72 and the recess 75 in the lower face of the middle spool 7. The window 72 opens and closes with the upper spool b at the corresponding position of the piston 4 (Figs. 2, 10 and 11).

On the inside of both pistons 5 and 4, in chambers 2-2, an air pressure of 5 atm is established. by the force of the spring and the spool 7, the window 77 opens and closes in the lower spool 8 (Figs. 2 and 8). The piston 4, having air pressure from the chamber 2 in 5 atm., Also sets through the upper slide b, window 72 and the recess 13 of the middle slide 7 is the same

pressure in the main line and chamber 3, regardless of the higher pressure of the main tank (Fig. 2, 10 and 11). Therefore, at the position of the driver's crane shown in FIG. 2, the air pressure is established in the piston chambers and in the main line, depending on the spring force, i.e. 5 atm. and maintained automatically regardless of the pressure in the main tank

So, in the positions of the crane of driver 2, 3, 4, 5, 6 and 9 in the main line, the air pressure is set correspondingly with the position of the crane. For example, take the position shown in FIG. 4: first, the notch / 5 of the middle spool 7 window / 7 and 14 of the lower spool is reported, therefore, the air from the chamber 2, 2 will leave (Fig. 3, 8 and 11). Due to the pressure drop in chamber 2, the piston 5 moves to the right of the spring force and closes the window / 7 in the lower spool with the face of the middle spool (Fig. 4). After this, the window 72 communicates with the window 76 on the back of the middle spool 7 by the recess 77 of the upper spool b (Fig. 4.8, 10, P and 13). The air from the main line will escape to the atmosphere through the JO main window, lower spool window 75 with recess 13 and middle 72 window spool, and finally upper spool 77 and lower middle spool windows M, 76 middle and lower spools (Fig. 4, 8, 10, 11 and 13 ).

The air from the main line will leave accordingly with the amount of air left from the chambers 2, after which the piston 4 will move to the right of the air pressure of the chamber 2 and the spool 6 will block the window 72. At this shut-off position, the automatically set air pressure is maintained at the fourth position (Fig. 5) .

At the seventh position of the crane handle in the chambers 2, 2 there will be no compressed air, since the spring is in a free state, therefore, there will also be no compressed air in the main line (Fig. B). The eighth position of the driver's crane results in a rapid pressure drop in the main line to O due to the direct connection of the main line with the atmosphere through a recess 79 in the lower face of the lower slide 8 and windows in the face of the slide valve 7/9 and 20. At this time, the chamber 2, 2 also connected to the atmosphere through the window P v (14 (Fig. 7, 14 and 9).

The subject matter of the invention.

An air brakes driver's crane is equipped with mixing arms with corresponding air channels, with slide valves, characterized in that the filling required for deceleration, shutting down and discharging the eight positions of the crane, are carried out with three sliding spools 6, 7 and 5 moving along each other. the spool 8 is controlled by hand, the spool 7 - by the piston 5, which is, on the one hand, under air pressure, installed in accordance with the elasticity of the spring 77, and, on the other hand, under the pressure of this spring, the spool 6, is controlled 4 a piston comprised within the one hand, under the same air pressure as the piston 5, on the other, - a pressurized air main air line.