SU1298117A2 - Connecting head of road train brake pneumatic drive on prime mover - Google Patents

Abstract

The invention relates to coupling heads for pneumatic brake systems of vehicles, preferably tons of caches. The purpose of the invention is to reduce the force of connection and disconnection of the coupling heads of the gacha and the trailer. The connecting head has a housing 1, in the cavity of which the hollow main valve element 6, the additional valve element 12 and the unloading valve locking element 19 are installed. The element 19 overlaps the axial bore in the rod 15 of the piston 14 and has a pusher 20. In connection with the connection and disconnection of the heads, the pusher 20 and the rod 15 are pressed. This closes the hole 9 connecting the cavity of the element 6 to the housing cavity and opens the unloading valve . 2 Il. / 7j 72 8 B i A ///// 5.3L Lil LhL 7/77 16 ND CO 00 K Figure 1

Description

The invention relates to the transport engineering, in particular to the apparatus of air brake systems, and is an improvement of the invention according to the author. St. No. 1194741.

The purpose of the invention is to reduce the force of connection and disengagement of the connecting heads of traction and trailer under pressure.

FIG. 1 shows a connecting head 10, a slit; in fig. 2 - piston, embodiment.

The connecting head consists of a housing 1 with a lock 2, an sealing ring and a cavity 10 is leveled and the element 6 is unloaded.

Due to the fact that the force of the spring 11 is less than the force of the spring 13, the latter expands, acts on the piston 14, the retaining ring 16 and moves the element 6 down to the body, compressing the spring 11. This leads to the release of the element 6 from the seal ring 3 and the formation of a gap between them, necessary for the passage of air.

To disconnect the coupling heads, the driver presses the pusher 20 and the rod 15. The pusher raises the element 19 above the saddle, the piston 14 and with it moves upwards, closing the seal 3, washers 4, the retaining ring 5, the base 17 of the piston 14, the hole 9 in the wall of the element 6. At the same time, the springs 13 and 21 are compressed, and the piston 14 is detached from the retaining ring 16 and ceases to act on the ring 16. The spring 11, acting on the element 6, moves it upward, blocking the opening of the sealing ring 3. The cavity 10 of the head ( t gacha) cross from the trailer head and the connecting line of the trailer compressed air is released into the atmosphere through the hole 8, the gap

of the valve element 6, closed by a cover 7.

The element 6 has an axial channel 8, which is connected by a hole 9 with the internal cavity 10 of the housing 1. A spring 11 presses the element 6 to the sealing ring 3.

In the axial channel 8 of the element 6, an additional valve element 12 is installed, overlapping the axial channel 8, a spring

13, a piston 14 with a hollow rod 15, 25 between the element 12 and the seat of the element 6,

thirty

35

retaining ring 16.

The force of the spring 13 is greater than the force of the spring 11. The piston 14 is sealed in the axial channel of the element 6 by the sealing ring 17, and the rod 15 is sealed in the housing 1 by the ring 18.

The inner channel of the rod 15 is blocked by a shut-off element 19 of the discharge valve with a pusher 20. The element 19 is pressed against the seat in the rod 15 by a spring 21 installed between elements 12 and 19. The rod 15 has a transverse channel 22.

The piston 14 may be made with two rings 23 (FIG. 2) to block the opening 9.

The coupling head works as follows.

The compressed air supplied to the cavity 10 acts on the element 6 and together with the spring 11 presses it to the sealing ring 3. At the same time, the compressed air passes through the opening 9 into the internal cavity of the return element 6 and acts 45 on the elements 12 and 19.

When connecting the connecting head of the trailer, its pushing pin (not shown) acts on the additional element 12 and separates it from the saddle in element 6, compressing the springs 13 and 21.

The air from the cavity 10 through the hole 9, the internal cavity of the element 6 enters the connecting head of the trailer and further to the connecting line of the trailer. The air pressure on the element 6 from the head

the gap between the element 19 and the seat in the piston 14, as well as through the gap between the rod 15 and the pusher 20 and further through the transverse bore 22. This relieves air pressure on the sealing ring 3 and the body 1 of the trailer coupling head, which allows them to be disconnected without the application of significant force and the inclusion of a hundred night brake or the use of a disconnecting tap.

Claims (1)

Invention Formula 40 The connecting head of the pneumatic drive brakes of the train on t hache on avt. St. No. 1194741, characterized in that, in order to reduce the force of connection and disconnection of pressurized connecting heads of traction and trailer, it is equipped with a piston installed in the cavity of the main valve element between the spring of the additional valve element and the retaining ring, while in the housing a bore is made through which the piston rod is passed through with an axial through-passage blocked by a shut-off element of the unloading valve, which is pressed by the spring from the additional valve element and is made with a pusher, passed through the axial channel of the rod and protruding from it, and in the side wall of the main valve element a hole is blocked by a piston. the trailer and the cavity 10 is leveled and the element 6 is unloaded. Due to the fact that the force of the spring 11 is less than the force of the spring 13, the latter expands, acts on the piston 14, the retaining ring 16 and moves the element 6 down to the body, compressing the spring 11. This leads to the release of the element 6 from the seal ring 3 and the formation of a gap between them, necessary for the passage of air. To disconnect the coupling heads, the driver presses the pusher 20 and the rod 15. The pusher raises the element 19 above the saddle, the piston 14 and with it moves upwards, closing the opening 17 in the wall of the element 6 by the seal 17 of the piston 14, and the springs 13 and 21 are compressed, and the piston 14 is detached from the stop ring 16 and ceases to act on the ring 16. The spring 11, acting on the element 6, moves it upwards, closing the opening of the sealing ring 3. The cavity 10 of the head (main line) closes, and from the trailer head and connects Yelnia highway trailer compressed air is discharged into the atmosphere through the opening 8, the gap between element 12 and element 6 seat, the gap between the element 19 and the seat in the piston 14, as well as through the gap between the rod 15 and the pusher 20 and further through the transverse bore 22. This relieves air pressure on the sealing ring 3 and the body 1 of the trailer coupling head, which allows them to be disconnected without the application of significant force and the inclusion of a hundred night brake or the use of a disconnecting tap. Invention Formula The connecting head of the pneumatic drive brakes of the train on t hache on avt. St. No. 1194741, characterized in that, in order to reduce the force of connection and disconnection of pressurized connecting heads of traction and trailer, it is equipped with a piston installed in the cavity of the main valve element between the spring of the additional valve element and the retaining ring, while in the housing a hole is made through which the piston rod is passed through with an axial through channel blocked by a shut-off element of the unloading valve, which is pressed by the spring from the additional valve of the element and adapted to the pusher, passed through the axial channel of the rod and projecting therefrom, and the side wall of the main valve member has an opening overlapping the piston. FIG. 2