RU95109701A - Rail vehicle brake electric air distributor - Google Patents

Abstract

FIELD: railway transport. SUBSTANCE: electric air distributor has three-pressure unit 1, pressure relay 2, braking duty selector 3, braking and brake release electromagnetic valves 4,5, stepless brake release unit 6 with chamber 7, unit 8 to stop additional reduction in brake main line 9 and initial pressure jump, change-over device 10, pressure regulator 11, brake chamber 12, operating chamber 13 and brake main line additional reduction chamber 14. Unit 1 has movable partitions 16 and 17, two-seat valve 18, brake main line additional reduction valve 20, and spaces 21,22,23,24,28,31,32,33. Space 21 communicates with operating chamber 13, spaces 22 and 32 communicate with brake main line 9, and spaces 23 and 31 communicate with atmosphere. Space 33 communicate with chamber 14 and through channel 34, with unit 8. Space 28 is connected with standby reservoir 30 and is placed in communication with space 24 at braking. Space 24 communicates with brake chamber 12 at initial moment of braking through channel 27, open valve 41 of unit 8, space 42, channel 43, change-over device 10 and pressure regulator 11. Pressure jump completed and additional reduction in brake main line at closing of valves 41 and 40 of unit 8 stopped, space 24 is placed in communication with brake chamber 12 through channel 25, throttling holes of braking duty selector 3, channel 26, change-over device 10, and pressure regulator 11. Unit 6 has movable partition 47 with valve 48, fixed partition 49, additional movable partition 50 with valve 51, chamber 7, spaces 53,56,54,58 and 63. Channel 57 is overlapped by valve 54. Spaces 53 and 54 above movable partitions 50 and 47 are placed in communication with each other and with channel 27. Space 58 under partition 47 and channel 57 are placed in communication with each other and with chamber 7. Chamber 7 communicates with channel 43 through check valve 62. Space 63 communicates with operating chamber 13 through channel 64 and with brake main line 9 through hole 65 overlapped by valve 48 and check valve 66. Space 56 communicates with atmosphere. In process of braking, compressed air passes simultaneously into brake chamber 12 and spaces 53,54,58, channel 57 and chamber 7 of unit 6. At initial brake release moment, chamber 7, space 58, and channel 57 are isolated from atmosphere by check valve 62 and are closed by valve 56. Movable partition 47 is shifted in position to open valve 48. Operating chamber 13 is placed in communication with brake main line 9. EFFECT: simplified design of brake electric air distributor, prevention of possibility of failure of stepless brake release unit caused by poor sealing of brake main line additional reduction valve. 3 cl, 1 dwg

Claims (1)

Usage: the electric air distributor belongs to the field of railway transport and is intended to control the change in the pressure of compressed air in the brake cylinders with electric and pneumatic brake control. SUMMARY OF THE INVENTION; the electric air distributor contains an organ 1 of three pressures, a pressure switch 2, a brake mode switch 3, electromagnetic valves 4 and 5 of braking and tempering, an organ 6 of stepless tempering with a chamber 7, an organ 8 for stopping additional discharge of the brake line 9 and the initial pressure surge, a switching device 10, gear 11, brake chamber 12, working chamber 13, chamber 14 for additional discharge of the brake line. Body 1 has movable partitions 16 and 17, a two-seat valve 18, a valve 20 for additional discharge of the brake line, cavities 21 - 24, 28, 31 - 33. The cavity 21 is connected with the working chamber 13, the cavities 22 and 32 are connected with the brake line 9, the cavity 23 and 31 are connected with the atmosphere. The cavity 33 is connected to the chamber 14 and through the channel 34 to the organ 8. The cavity 28 is connected to the spare reservoir 30 and, when braking, communicates with the cavity 24. The cavity 24 communicates with the brake chamber 12 at the initial time of braking through the channel 27, open valve 41 of the organ 8 , cavity 42, channel 43, switching device 10, gear 11. After the end of the pressure jump and the additional discharge of the brake line is stopped when the valves 8 and 8 of the organ 8 are closed, the cavity 24 communicates with the brake chamber 12 through the channel 25, the throttle openings Firing 3 braking modes, channel 26, switching device 10, gear 11. Body 6 has a movable partition 47 with valve 48, a fixed partition 49, an additional movable partition 50 with valve 51, chamber 7, cavities 53, 56, 54, 58, 63 Channel 57 is blocked by a valve 54. Cavities 53 and 54 above the movable partitions 50 and 47 are connected to each other and to the channel 27. The cavity 58 under the partition 47 and the channel 57 are connected to each other and to the chamber 7. The chamber 7 is connected to the channel through a check valve 62 43. The cavity 63 is connected with the working chamber 13 channel 64 and with the brake master rally 9 through the opening 65, blocked by the valve 48, and the check valve 66. The cavity 56 is in communication with the atmosphere. When braking, compressed air enters simultaneously into the brake chamber 12 and into the cavity 53, 54, 58, channel 57, chamber 7 of the organ 6. At the initial moment of tempering, chamber 7, cavity 58, channel 57 are separated from the atmosphere by a check valve 62 and a closed valve 56. The movable partition 47 moves to the opening position of the valve 48. The working chamber 13 communicates with the brake line 9. The technical result achieved is to simplify the design of the electric air distributor of the brake of a railway vehicle, eliminating the possibility of operation of the organ of stepless tempering due to leaks in the valve of the additional discharge of the brake line.