JP3244132B2 - Brake equipment for railway vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake system for a railway vehicle used when a locomotive equipped with an automatic brake system and a passenger car equipped with an electromagnetic automatic brake system are mixedly operated.

[0002]

2. Description of the Related Art A conventional automatic braking device used for a railway vehicle is disclosed, for example, in Japanese Utility Model Publication No. 59-30779. FIG. 2 shows an automatic braking device based on this publication. FIG. 2 is a block diagram of the automatic brake device. The automatic brake device will be described with reference to FIG.
In FIG. 2, when the brake valve 3 of the locomotive 9 is at the brake release position, the brake valve 3 receives a supply of constant-pressure air from the original air sump pipe 2 via the pressure regulating valve 8, and further supplies this to the brake pipe. 1 and the balance air reservoir 4. When the brake valve 3 is operated to the brake position,
An actuating device (not shown) cuts off the supply of pressurized air to the brake pipe 1 and the balancing air reservoir 4 and connects the balancing air reservoir 4 to an exhaust port 6 to reduce the pressure, whereby a balancing discharge valve (not shown) in the brake valve 3 is activated. The air pressure in the brake pipe 1 is reduced by an amount equivalent to the reduced pressure. The pressure reduction of the brake pipe 1 causes the brake control valve 5
Operates, and the pressurized air in the supply air reservoir 21 is supplied to the brake cylinder 7 in accordance with the reduced pressure amount, and an automatic braking force proportional to the reduced pressure amount is applied. As described above, the automatic brake device is controlled purely by increasing and decreasing the pressure of the brake pipe 1 by operating the brake valve 3.

Further, in order to cope with a higher speed of a vehicle, an electromagnetic automatic brake device which has improved the performance of the automatic brake device by shortening the idling distance and synchronizing the brakes has been developed. , Published on June 15, 1972, published by Koyusha Co., Ltd., and an electromagnetic automatic brake device based on this document is shown in FIG. FIG. 3 is a block diagram of the electromagnetic automatic brake device. The electromagnetic automatic brake device will be described with reference to FIG. In FIG. 3, the locomotive 10
When the brake valve 12 is operated, the electropneumatic feedback device 13 operates to output an electric command through the lines C, R, S, E, and G passed through the locomotive 10 and the passenger wagon 11. As a result, at the time of braking, the electromagnetic exhaust valve 14 operates to depressurize the brake pipe 1 and increase the pressure of the brake control valve 16.
When the brake is released, on the other hand, when the brake is released, the electromagnetic air supply valve 15 is operated by an electric command to put the air pressure of the original air reservoir pipe 2 into the brake pipe 1 so that the pressure can be increased from the brake control valve 16. Release the brake pressure. When the vehicle is running at a certain speed or higher, the switching solenoid valve 16b of the pressure controllable brake control valve 16 is excited by the speed detection circuit 19 to act on the auxiliary air reservoir 17 and the pressure increase relay valve 16a to brake the vehicle. The pressure of the cylinder 7 is set to be about 1.6 times. As described above, the electromagnetic automatic brake device performs a brake command by pressurizing and depressurizing the brake pipe 1 with the electric command and the electromagnetic exhaust valve 14 and the electromagnetic air supply valve 15.

[0004]

In FIG. 3, it is preferable that the passenger car 11 having the electromagnetic automatic braking device is towed by a locomotive 10 having the same electromagnetic automatic braking device. For convenience and a small number of locomotives 10 equipped with an electromagnetic automatic braking device, a passenger wagon 11 equipped with an electromagnetic automatic braking device may be towed by a locomotive equipped with an automatic braking device in FIG. In FIG. 3, in this case, the electromagnetic exhaust valve 14 and the electromagnetic air supply valve 15 cannot be used because the locomotive side does not have the lead-in lines C to G as electric command lines, and the brake pipe 1 and the original air sump pipe are not used. 2
Only the passenger car 11 is connected, and the passenger wagon 11 is operated as an automatic brake device like a locomotive. However, when the passenger car 11 of the electromagnetic automatic braking device is towed by the locomotive 9 of the automatic braking device due to the recent speeding up of the vehicle, the brake command is inevitably an air command only by the brake pipe 1, so that the idling distance is reduced. This causes a problem that the braking distance prescribed by law may not be maintained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a passenger car with an electromagnetic automatic braking device towed by a locomotive with an automatic braking device. Even in such a case, it is an object of the present invention to provide a railway vehicle brake device capable of securing the same braking performance as when being pulled by a locomotive equipped with an electromagnetic automatic brake device.

[0006]

In order to solve the above problems SUMMARY OF THE INVENTION The brake system for a railway vehicle of the present invention, an automatic brake to control the braking force by operating the brake valves for vacuum increase the pressure in the brake pipe a locomotive having a device, and a railway cars equipped with a magnetic automatic brake system that controls the braking force by reducing the pressure increase of the pressure in the brake pipe by operating the electromagnetic feed discharge valve by the electric command from the pull through line A brake device for a railway vehicle used in hybrid operation, wherein a throttle is provided in a brake pipe of a passenger wagon connected to the locomotive, and a differential pressure detector is provided in parallel with the throttle to detect the differential pressure. The output device outputs the electric command to the lead-in line by the pressure difference between the pressure of the brake pipe on the locomotive side and the pressure of the brake pipe on the passenger wagon, and activates the electromagnetic supply / discharge valve.
In this case, the pressure in the brake pipe is increased and decreased .

[0007]

According to the present invention, a throttle is provided in a brake pipe of a passenger wagon connected to a locomotive, and a differential pressure detector which outputs an electric command to a lead-in line based on a pressure difference between brake pipe pressures before and after the throttle is provided. Therefore, when the brake pipe is depressurized from the brake valve of the locomotive during braking, the throttle causes a pressure difference between the brake pipe on the locomotive side and the brake pipe on the passenger car, which is detected by the differential pressure detector and passed through. By outputting an electric command to the line, the passenger wagon can operate the electromagnetic supply / discharge valve based on this electric command to increase or decrease the pressure in the brake pipe. As a result, the passenger wagon uses the electromagnetic automatic braking device. Even if a locomotive with an automatic brake device pulls a passenger car with an electromagnetic automatic brake device, it is possible to shorten the free running distance and maintain the braking distance prescribed by law. it can

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a brake device for a railway vehicle according to the present invention. In FIG. 1, FIG.
Portions having the same functions as those described above are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 1, a passenger car 31 of an electromagnetic automatic braking device is pulled by a locomotive 30 of an automatic braking device,
A throttle 32 is provided on the brake pipe 1 at the front of the passenger wagon 31. A differential pressure detector 33 corresponding to the electropneumatic feedback device of FIG. Further, a differential pressure check valve 35 is provided in the brake pipe 1 in parallel with the differential pressure detector 33.
And a shutoff cock 34, and a pressure switch 36 is provided closer to the locomotive. The output terminal of the differential pressure detector 33 is connected to the through lines S and R, and the output terminal of the atmospheric pressure switch 36 is connected to the through lines G and E.

When the brake valve (not shown) of the locomotive 30 is operated to the brake position and the brake pipe 1a on the locomotive side is depressurized by the throttle 32, the throttle 32 is located between the throttle pipe and the brake pipe 1b on the passenger wagon side. And the electric contact 37 of the differential pressure detector 33 closes to the side a, the lead-in line S is pressurized, the electromagnetic exhaust valve 14 is operated, and the brake pipe 1b on the passenger wagon is depressurized. And the brake pipe 1b on the passenger wagon
When the pressure becomes the same as that of the brake pipe 1a on the locomotive side, the electric contact of the differential pressure detector 33 returns to the neutral point and the electric command disappears, whereby the brake command by operating the brake valve is converted into the electric command. Will be. Hereinafter, the brake control valve 38 operates as a normal electromagnetic automatic brake device, and the brake control valve 38 is operated by depressurization of the brake pipe 1b on the passenger wagon side to output a braking force to the brake cylinder 7. Here, the brake control valve 38 may be the pressure-increasing brake control valve of FIG. Next, the same applies to the case where the brake valve is operated to the brake release position. When the pressure of the brake pipe 1a on the locomotive side is increased, the electric contact 3 of the differential pressure detector 33 is increased.
7 is closed to the b side, the lead-in line R is pressurized, and the electromagnetic air supply valve 15 is operated to increase the pressure of the brake pipe 1b on the passenger wagon side to the same pressure as the brake pipe 1a on the locomotive side. Thus, the brake release command is converted to an electric command. Further, when the brake valve is operated to the emergency brake position, the pressure in the brake pipe 1a on the locomotive side rapidly decreases, and the conversion to the electric command is required to follow quickly. A sudden drop in pressure is detected, and an emergency brake electric command is output to the lead-in line E. Note that the shutoff cock 34 opens when the differential pressure detector 33 fails,
The differential pressure check valve 35 is provided to allow the pressure of the brake pipe 1b of the throttle 32 on the passenger car side from the locomotive 30 side during emergency braking. It is provided for escape.

[0011]

As described above, the brake device for a railway vehicle according to the present invention is provided with a throttle in a brake pipe of a passenger wagon connected to a locomotive, and a differential pressure detector is provided in parallel with the throttle. The differential pressure detector is configured to output an electric command to the lead-in line based on the pressure difference between the pressure in the brake pipe on the locomotive and the pressure on the brake pipe on the freight car. The electromagnetic pipe can be operated to increase / decrease the pressure in the brake pipe. Even if a passenger car with an electromagnetic automatic braking device is towed by a locomotive with an automatic braking device, it is towed by a locomotive with an electromagnetic automatic braking device. It is possible to ensure the same braking performance as in the case where the vehicle is driven, to cope with a higher speed of the vehicle and to facilitate the train formation.

[Brief description of the drawings]

FIG. 1 is a block diagram of a railway vehicle brake device of the present invention.

FIG. 2 is a block diagram of a conventional automatic brake device.

FIG. 3 is a block diagram of a conventional electromagnetic automatic brake device.

[Explanation of symbols]

 C drawing line E drawing line G drawing line R drawing line S drawing line 1 brake pipe 1a locomotive side brake pipe 1b passenger car side brake pipe 3 brake valve 14 electromagnetic exhaust valve (supply / exhaust valve) 15 Electromagnetic air supply valve (supply / exhaust valve) 30 Locomotive 31 Passenger car 32 Throttle 33 Differential pressure detector

Claims (1)

(57) [Claims] 1. A and locomotive equipped with an automatic braking device for controlling the braking force by operating the brake valve to vacuum increasing the pressure <br/> the brake pipe, an electromagnetic supply the electrical command from the pull through line operating the discharge valve to a brake system for a railway vehicle to be used for混結operate and railway cars equipped with a magnetic automatic brake system that controls the braking force by reducing the pressure increase of the pressure in the brake pipe, said engine A throttle is provided in the brake pipe of the freight car connected to the car, and a differential pressure detector is provided in parallel with the throttle, and this differential pressure detector detects the pressure of the brake pipe on the locomotive side and the brake pipe on the freight car side. The electric command is output to the lead-in line according to the pressure difference from the pressure, and
A brake device for a railway vehicle, wherein the electromagnetic supply / discharge valve is actuated to increase / decrease the pressure in a brake pipe .