RU2298501C1 - Passenger car brake - Google Patents

Abstract

FIELD: railway transport; brake systems of rail vehicles.

SUBSTANCE: proposed brake includes brake main line and feed main line, air distributor, brake cylinders with drives to brake linings and supply pipelines, antiskid valves and brake disks. Brake disks are rigidly secured on axles of wheelsets. Four pneumoelectric pressure converters with cables are connected to supply pipelines of brake cylinders. Said cables connect pneumoelectric pressure converters with microprocessor monitoring and diagnostic control system complex installed inside car. Indicator panels displaying information of condition of brake are installed in service vestibule and conductor compartment.

EFFECT: increased sensitivity of control of compressed air pressure in cylinders, safety of operation of cars, possibility of excluding additional volume of brake cylinders.

2 cl, 1 dwg

Description

The invention relates to the field of brakes of railway rolling stock, namely, disc brakes of passenger cars for high speeds.

The brake of a passenger car with an anti-union device is known - see UDC 629.4.077-592-52 (075.8) Inozemtsev V.G., Kazarinov V.M., Yasentsev V.F. Auto brakes. Textbook for universities of railway transport. M .: Transport, 1981. 464 p., Figure III.14 - Diagram of the braking equipment of a passenger car with an anti-union device and description on pages 72-73.

The scheme is characterized by the presence of the main brake line, which serves both to control the braking processes and to create a reserve of compressed air on each train car for braking by filling the spare tanks of cars from the reservoir of the locomotive through the driver’s crane. Such a brake circuit, requiring increased consumption of compressed air during the implementation of frequent braking with the inclusion of anti-union devices, reduces the speed of the brake.

A passenger car brake with an anti-slip device is also known - see TA28143 / 71EN Rev 00 10.2002 "Basics of Brake Technology", Knorr-Bremse Special Library, Munchen, Fig. 2.2-1. This brake includes the main brake and supply (main air reservoir of the locomotive) lines with connecting inter-car hoses and end cranes, the compressed air to which is supplied from the main air reservoir of the locomotive directly or through the driver’s crane, the air distributor, exhaust pipes from the brake and supply lines, pressure switches , throttle and check valve, uncoupling two-way valve, brake cylinders with anti-skid valves.

In order to increase its speed, in this brake, in addition to the brake (BP), a separate feed line (MR) is introduced, which is fed directly from the main air tank of the locomotive, bypassing the driver’s crane, and replenishes the compressed air supply in the tank cars almost unhindered.

Known passenger car brake adopted as a prototype of a technical solution (see diagram 7.8) of the KE-PR-Mg-D air brake for passenger cars with disc and electromagnetic rail brakes - (publication Knorr-Bremse Systeme Fur Schienenfahrzeuge GmbH Moosacher Strabe 80 D-80809 Munchen Deutschland. Handbuch. Bremsen fur Schienenfahrzeuge Bremstechnische Begriffe und Werte; art. 12.2000, pp. 134-135), including the main brake HL and the supply HB main, air distributor 1, brake cylinders 30 and 31 with actuators to the brake linings 32, anti-skid valves 28, brake discs 33, fixed to the axle x wheelsets, signaling devices (indicators) with indicators 17 about the state of the brake "BRAKEN" and "RELEASED", located at the bottom of both side walls in the middle of the car. In this case, pneumatic cylinders are mounted inside the signaling devices 17, which are driven by compressed air supplied to them through the pipelines from the cavities of the brake cylinders 30 and 31 and the feed tank 15 (feed line HB).

The disadvantage of such a brake with signaling devices located on the side walls of the cars is a significant increase in the idle volume of the brake cylinders due to the volumes of the supply pipelines and pneumatic cylinders of the signaling devices, which reduces the sensitivity of pressure regulation in the brake cylinders.

In addition, the implementation of the requirements of the brake operating instructions on the need to signal the locomotive driver with the wagon conductor about brake release is associated with the need for the conductor to leave the wagon, which, at a short stop time at intermediate stations, threatens the safety of the conductor.

To eliminate these drawbacks, it is proposed to introduce into the brake system an electronic signaling about the state of the brake instead of a pneumatic one, including signaling devices with pneumatic cylinders and supply pipelines (the above pneumatic brake circuit 7.8 is adopted as a prototype).

The purpose of this technical solution is such a brake that will eliminate the presence of an additional volume of brake cylinders and increase the sensitivity of adjusting the pressure of compressed air in them, as well as prevent the conductor from leaving the car and thereby increase the safety of operation of the cars.

The technical solution to this problem is achieved by connecting well-known pneumoelectric pressure transducers to the air cavities of the brake cylinders, the electrical signals from which are supplied to the microprocessor processing unit, which is part of the well-known microprocessor-based control system complex and diagnostics (SAUKD) of the passenger car.

Based on the processed information from the electrical signals, appropriate commands are generated about the state of the brake and are sent to the SAUKD indicator display and information boards installed in the working platform and the service compartment of the car.

The essence of the proposed technical solution is illustrated in the drawing, which shows part of the circuit of the proposed performance of the disk brake with the electronic signaling circuit of the state of the disk brake.

Four pneumo-electric pressure transducers with wiring cables connecting the transducers with a microprocessor-based control and diagnostics control system installed inside the car are connected to the supply lines of the brake cylinders.

Pneumoelectric pressure transducers (sensors) 1, recording excess air pressure, are installed on the supply pipes 2 directly connected to the working cavities of the brake cylinders 3, which actuate the disk brake blocks 4. The system employs four sensors 1 - two for each wheel pair, since the cylinders of one wheel pair work in parallel.

Pneumoelectric pressure transmitters 1 have cabling cables 5, through which they are connected to the microprocessor complex of the control, monitoring and diagnostic system (SAUKD) 6. Electrical signals are supplied to the microprocessor processing unit (MBO) 7, which is included in the SAUKD set of the car, for further processing. MBO 7 generates the appropriate commands about the state of the brake for transferring them to the SAUKD 8 indicator display and to the indicator boards 9 installed in the working platform 10 and the service compartment 11 of the car.

Sensors 1 are powered by a direct current source through a two-wire circuit. MBO 7 with the established duty cycle measures the parameters of the sensors 1 and on the basis of these parameters according to a given algorithm determines the state of the car’s brake:

when all sensors 1 register an overpressure above 0.04-0.05 MPa, the "BRAKEN" command is generated;

when all sensors 1 register an overpressure close to zero, the "RELEASED" command is generated.

when determining MBO 7 of one or more faulty sensors 1, the “BRAKEN” and “RELEASED” commands are not generated.

In addition to solving the problem of determining the condition of the car’s brake and supplying the appropriate signals to the scoreboard 9, the proposed system allows using MBO 7 to perform internal diagnostics of the system and transfer the necessary signals to the SAUKD 8 display, as well as to implement additional functions such as transmitting brake status via train “LAIDS” system to the train chief’s computer and further through the communication systems to the train turnover points, additional alarm sound signal when the train starts off from the place with an unreleased brakes.

Thus, the proposed brake of a passenger car with electronic signaling about the state of the brake will provide a technical result consisting in increasing the sensitivity of regulation of the compressed air pressure in the brake cylinders and increasing the safety of operation of the cars, and will also allow for additional functions to be performed when performing tasks of reliable determination of the state of the brake.

The claimed technical solution is implemented on passenger cars of a new generation manufactured by Kryukovsky Carriage Works OJSC, equipped with disc brakes and an anti-skid device.

Claims (2)

1. The brake of a passenger car, including the main brake and feed lines, an air distributor, brake cylinders with actuators for the brake linings and supply pipelines, anti-skid valves and brake discs rigidly fixed to the axles of the wheelsets, characterized in that four are connected to the supply pipelines of the brake cylinders pneumoelectric pressure transducer with wiring cables connecting them to the microprocessor system of the control system installed inside the car Olya and diagnostics. 2. The brake of a passenger car according to claim 1, characterized in that indicator panels displaying information about the state of the brake are installed in the working vestibule and service compartment of the car conductor.