JP2593787B2 - Emergency brake reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for use in a brake circuit of a railway vehicle, which, when a pneumatically commanded vehicle and an electric commanded vehicle are mixed, reciprocally reads emergency brake commands of both vehicles.

[0002]

2. Description of the Related Art Conventionally, as this kind of technique, there is one disclosed in Japanese Patent Publication No. Hei 4-13188, for example. In this prior art, as shown in FIGS. 8 to 10, an electric command vehicle EC and an air pressure command vehicle AC are mixed. EC 'in the figure
Is another electric command vehicle organized in the electric command vehicle EC. Although the pneumatic command vehicle is also formed, it is represented by AC for the sake of explanation.

[0003] The air pressure command vehicle AC has a brake valve BV,
A first emergency brake command line EB1, an electromagnetic valve MV1, a brake pipe BP, a control valve CV, and a first discharge valve DV1 are provided. When the brake valve BV is released, the original air reservoir M is released.
The pressurized air from R is sent until the inside of the brake pipe BP reaches a predetermined pressure, and also acts to cut off the voltage application to the first emergency brake command line EB1. Conversely, brake valve BV
When the emergency brake is operated, the supply of the pressurized air to the brake pipe BP is interrupted, the brake pipe BP is exhausted, and the first emergency brake command line EB1 is pressurized. Note that SR in the figure is a supply air reservoir.

Accordingly, when the brake valve BV is loosened, the application of the voltage to the first emergency brake command line EB1 is cut off, and the solenoid valve MV1 is demagnetized. The first discharge valve DV1 is closed to communicate with the atmosphere by communicating with the pilot chamber of the valve DV1.
At the same time, the pressure in the brake pipe BP rises because the pressurized air is sent from the original air reservoir MR into the brake pipe BP. When the pressure in the brake pipe BP exceeds a predetermined value, the control valve CV activates the brake cylinder BC.
Is exhausted, and the brakes are released. The control valve C
V is, for example, a three-pressure control valve disclosed in Japanese Patent Publication No. 59-19866.

When the emergency operation of the brake valve BV is performed, the supply of the pressurized air to the brake pipe BP is interrupted to release the brake pipe BP to the atmosphere, so that the pressure in the brake pipe BP is reduced. The valve CV operates the emergency brake. At this time, the first emergency brake command line EB1
Is applied to the solenoid valve MV1 and the solenoid valve MV1 is excited, so that the pilot chamber of the first discharge valve DV1 is evacuated, the first discharge valve DV1 is opened, and the pressure in the brake pipe BP is reduced. .

The electric command vehicle EC includes a read circuit YK2, an auxiliary read circuit YK1, a switch 10, a brake controller C, a power line EB2 as a second emergency brake command line, and a forward line EB.
3. Emergency brake switch EB connected to outgoing line EB3
S, return line EB4, emergency brake solenoid valve EBV. A readout circuit YK is also provided for the other electric command vehicle EC '.
2 ', auxiliary reading circuit YK1', switch 10 ', brake controller C', power supply line EB which is a second emergency brake command line
2, outbound line EB3, return line EB4, emergency brake switch E
BS 'and an emergency brake solenoid valve EBV'. It should be noted that, in the figure, the reading circuit YK2 'and the auxiliary reading circuit Y
The detailed configuration of K1 'is the same as that of the readout circuit YK2 and the auxiliary readout circuit YK1, and is not used in the hybrid example of FIG. 8, so that only the frame of the dashed line is shown and details are omitted. .

[0007] The brake controllers C and C 'are always pressurized and stop the electric command when the emergency brake is operated to make the second emergency brake command line non-pressurized, and the emergency brake solenoid valves EBV and EBV'. Works to loosen the second brake device by excitation and to operate the second brake device by emergency demagnetization.

A first emergency brake command line EB1 of the pneumatic command vehicle AC is connected to the auxiliary reading circuit YK1, and a brake pipe BP of the pneumatic command vehicle AC is connected to the reading circuit YK2. .

FIG. 8 shows a preparatory state when the read-out circuit YK2 is used. The auxiliary switches S1 to S4 and S5 'are closed and S5 is open. In this state,
The brake valve BV is in the handle removal state after the emergency braking, and the brake controllers C and C 'are also in the emergency brake operating state.

That is, the brake valve BV presses the first emergency brake command line EB1, excites the solenoid valve MV1 and opens the brake pipe BP to the atmosphere, and the first emergency brake command line EB1. From the electrical connection contacts CN,
A circuit for grounding via the relay R6 is configured. When the relay R6 is energized, the normally open contact R6a is closed, and the switch S3 and the normally open contact R6
a, a circuit for grounding via the relay R1 is formed, and the normally open contact R1a is closed by the excitation of the relay R1. By closing the normally open contact R6a, a circuit for grounding the power supply E via the switch S1, the normally closed contact R2b, the normally open contact R1a, and the relay R3 is configured. Relay R3
Is self-maintained by closing its normally open contact R3a by excitation.

In this state, the solenoid valve MV2
Is demagnetized without forming a closed circuit by opening the contacts R2a and R1b, so that the second discharge valve DV2 is open.
Also, since the solenoid valve MV3 does not constitute a closed circuit and is demagnetized, the switching valve TV is closed.

In the preparatory state of FIG. 8, when the leading vehicle (driving side) is the pneumatic command vehicle AC, as shown in FIG. 9, the switch 10 is set to the front position and the switch 10 'is set to the rear position. When the selector switch SS is closed and the brake valve BV is loosened, the brake valve BV makes the first emergency brake command line EB1 non-pressurized, and pressurized air flows from the brake valve BV to the brake pipe BP. Supplied.

In FIG. 9, since the pressure in the brake pipe BP has not reached a predetermined pressure, the pressure switch PS is in an open state. Accordingly, since the forward line EB3 and the return line EB4 of the second emergency brake command line are in a non-pressurized state, the emergency brake solenoid valve EVB is demagnetized and the emergency brake is in operation. The power supply E constitutes a circuit for grounding via a switch S1, a normally closed contact R1b, a normally open contact R3a, and a solenoid valve MV2. When the solenoid valve MV2 is excited, the second discharge valve DV2 is closed. I have.

When the pressure in the brake pipe BP rises and reaches a predetermined pressure, the pressure switch PS is closed and the state shown in FIG. 10 is obtained. When the pressure switch PS is closed, the forward line EB3 and the return line EB4 of the second emergency brake command line are in a pressurized state, and the emergency brake solenoid valve EBV is excited, so that the second brake device is in a loosened state. Further, when the brake pipe BP enters and reaches a predetermined pressure, the first brake device is in a loosened state by the operation of the control valve CV.

While driving in the direction of arrow A in the state of FIG.
FIG. 11 shows a state in which the brake valve BV is operated with the emergency brake. In the air pressure command vehicle AC, since the first emergency brake command line EB1 is pressurized by the brake valve BV, the solenoid valve MV1 is excited to open the first discharge valve DV1, and the brake pipe BP is connected to the brake valve BV and the brake valve BV. The pressure is reduced by the first discharge valve DV1, and the control valve CV operates the emergency brake.

At this time, in the auxiliary reading device YK1, the auxiliary relay R6 is energized to close the normally open contact R6a and open the normally open contact R6b, and the auxiliary relay R7 is opened.
Is demagnetized to open its normally closed contact R6b, and the auxiliary relay R7
Demagnetizes and closes the normally closed contact R7b.

The opening of the normally closed contact R6b causes the auxiliary reading device YK1 in the electric command vehicles EC and EC 'to open.
The second emergency brake command line E
When no pressure is applied to B2 to EB4, the emergency brake solenoid valve E
The BV operates the emergency brake.

[0018]

However, in the above-described conventional emergency brake reading device, the reading circuit YK2 is provided with the second discharge valve D separately from the power supply from the brake controllers C and C '.
Since it is necessary to provide a power source E for controlling the solenoid valve MV2 of V2, the configuration becomes complicated, and providing a large number of relay contacts is not preferable from the viewpoint of reliability. Further, at the time of introduction of the air command vehicle AC, since the electric command vehicle EC has not been introduced, the electric connection terminal may not be provided, and thus the electric connection terminal CN is not provided on the pneumatic command vehicle AC. There was a problem that it could not be applied to vehicles.

[0019]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a first emergency brake command line which is always pressurized without emergency pressure during an emergency brake. Brake pipe depressurized to atmospheric pressure,
The first emergency brake command line is closed by no pressurization to close the brake pipe to the atmosphere, and the first emergency brake command line is opened by pressure to open the brake pipe to the atmosphere.
A pneumatically instructed vehicle having a discharge valve and a pneumatically instructed first brake device responsive to the air pressure in the brake pipe; and a pneumatically instructed vehicle which reciprocates between the vehicles and is constantly pressurized and non-pressurized during emergency braking. (2) an emergency brake command line, a normally-closed emergency brake switch arranged on the forward line of the second emergency brake command line, and an electric command type second brake device connected to the return line of the second emergency brake command line. And an electric command vehicle having the same emergency brake command. When the air pressure of the brake pipe reaches a predetermined pressure, the contact is closed by the second emergency brake command line. A pressure switch located on the outgoing line,
A second discharge that opens the valve by pressurizing the second emergency brake command line to shut off the brake pipe from the atmosphere and opens the valve by no pressurization of the second emergency brake command line to open the brake pipe to the atmosphere. And an emergency brake reading circuit comprising: a pressure switch which is interposed between the second emergency brake command line and the second discharge valve, and supplies power to the second discharge valve in the case of an emergency urme. After the brake pipe pressure is applied, the pressure switch is closed, and the non-brake of the electric command vehicle is slackened, a switching circuit is provided for taking a return from the second emergency brake command line.

[0020]

According to the above means, when the pneumatically commanded vehicle is operated with the leading vehicle as the leading vehicle, the power of the second discharge valve is taken from before the pressure switch. The valve is closed. At this time, even in the pneumatic command vehicle, pressurized air is introduced by the loosening operation. When the brake pipe pressure reaches a predetermined pressure, the pressure switch is closed, so that in the electric command vehicle,
The second brake device is released by the pressurization of the return line of the second emergency brake command line. When the pressure switch is closed, the power supply of the second discharge valve is switched to the return line by the switching circuit, and the pressure is applied from the return line to close the second discharge valve. At this time, also in the pneumatic command vehicle, the first brake device is loosened by maintaining the brake pipe at the predetermined pressure.

When the pneumatic command vehicle and the electric command vehicle that have been loosened in this way are operated, the emergency brake switch of the electric command vehicle, which is the trailing vehicle, is opened, or the train is separated between the electric command vehicles. Occurs, the return line of the second emergency brake command line becomes non-pressurized.
When the power supply of the discharge valve is cut off, the second discharge valve is opened, the brake pipe is depressurized, and the first brake device of the air pressure command vehicle operates the emergency brake. At this time, in the electric command vehicle, the return line is not pressurized,
The emergency brake is operating.

Therefore, when the emergency brake switch is opened and the train is separated in the electric command vehicle in the driving state in which the pneumatic command vehicle is the leading vehicle, the emergency brake command is transmitted to the pneumatic command vehicle by the reading circuit of the present invention. Is transmitted to

In the loosening operation when the electric command vehicle is set as the leading vehicle, the first emergency brake command line is closed by no pressure application. Then, similarly to the above, the power of the second discharge valve is taken from before the pressure switch, and the second discharge valve is closed. When the pressure switch is closed, the return line of the second emergency brake is pressurized, the second brake device is released, and the second circuit is released by the switching circuit.
The power supply of the discharge valve is switched to the return line of the second emergency brake command line, and the closed state of the second discharge valve is maintained. At this time, also in the pneumatic command vehicle, the first brake device is loosened by maintaining the brake pipe at the predetermined pressure.

If the emergency brake switch is operated by opening the emergency brake switch or by separating the electric command vehicle, the first brake device and the second brake device operate the emergency brake as described above.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the emergency brake reading device according to the present invention will be described below with reference to FIGS.
Note that the same components as those in the related art are denoted by the same reference numerals, and the description thereof will be omitted. Details of the characteristic portions will be described.

In the first embodiment according to the present invention, a switching circuit YKC is provided as shown in FIG. This switching circuit YKC includes an emergency brake second relay EBR2 and an emergency brake first relay EBR1 connected in parallel to the emergency brake second relay EBR2 via a diode D. The emergency brake first relay EBR1 is always Open contact E
It has a BR1a and a normally closed contact EBR1b, and the emergency brake second relay EBR2 has a normally open contact EBR2a.

FIG. 1 shows an electric command vehicle EC, EC 'in the direction indicated by an arrow a in FIG.
And shows a start state of the loosening operation of the first and second brake devices. In this state, the electric command vehicle E
In C and EC ', the front / rear switch 3 is in the front position, the front / rear switch 3' is in the rear position, the connection operation device 1 is in the connection position, and the connection operation device 1 'is in the non-connection position. 4,
5, 6, 7 ', 8', 9 'are closed and contacts 7, 8,
9, 2 ', 4', 5 ', 6' are open.

At this time, the controller C of the electric command vehicle EC:
By performing the loosening operation, an electric command to pressurize the power supply line EB2 of the second emergency brake command line is issued.
Contact 5, contact 6 of the front / rear switch 3, contact 4 of the connection operation device 1, emergency brake first relay EBR in the switching circuit YKC
One ground contact EBR1b and the solenoid valve MV2 are grounded. As a result, the solenoid valve MV2 is excited to communicate the brake pipe BP with the pilot chamber of the second discharge valve DV2, and closes the second discharge valve DV2 to shut off the brake pipe BP from the atmosphere.

The pneumatic command vehicle AC operates the first emergency brake command line E by the emergency release operation of the brake valve BV.
B1 is pressurized, the solenoid valve MV1 is excited, and the brake pipe BP and the pilot chamber of the first discharge valve DV1 communicate with each other to make the first valve.
The discharge valve DV1 is closed to shut off the brake pipe BP from the atmosphere, and pressurized air is supplied from the original air reservoir MR to the brake pipe B.
It is sent to P.

When the brake pipe BP is inserted and a predetermined pressure is reached, the control valve CV is operated to exhaust the brake cylinder BC, so that the first brake device is released and the pressure switch PS is closed. By the second
The power supply line EB2 of the emergency brake command line, the contact 5, the pressure switch PS, the emergency brake switches EBS, EBS 'wired to the forward line EB3, the contact 8' of the connection operation device 1 'of the electric command vehicle EC', and the front / rear switching device. 3 'contact 7', return line E
B4, by configuring a circuit for grounding via the emergency brake solenoid valve EBV, the emergency brake solenoid valve EBV is excited and the second brake device is in a loosened state.

Then, return line E of the second emergency brake command line
When a voltage is applied to B4, as shown in FIG.
The diode D and the emergency brake first relay EB connected in parallel from B4 to the contact 2 of the connecting operation device 1, the emergency brake second relay EBR2 and the emergency brake second relay EBR2
A circuit for grounding via R1 is configured. Thereby, the first emergency brake relay EBR1 and the second emergency brake relay EBR2 are excited, the normally open contact EBR1a of the first emergency brake brake relay EBR1 is closed, the normally closed contact EBR1b is opened, and the emergency brake second relay EBR2 is opened. The normally open contact EBR2a is closed. The normally open contact EBR1a of the emergency brake first relay EBR1 is used.
The emergency brake first relay EBR1 is pressurized from the power supply line EB2 of the second emergency brake command line via the contacts 5 and 6 of the front / rear switch 3, and the contact 4 of the connection operation device 1, and is held by itself. ing.

When the contact EBR1b opens, the power supply from the power supply line EB2 to the solenoid valve MV2 is cut off.
When the BR2a is closed, a circuit for supplying power to the solenoid valve MV2 from the return line EB4 through the contact 2 of the connection operation device 1 and the contact EBR2a in the switching circuit YKC is newly configured, so that the solenoid valve MV2 is in the closed state. Has been maintained. Therefore, power is supplied to the solenoid valve MV2 from the power line EB2 to the return line EB.
4 will be switched.

In this manner, power is supplied to the solenoid valve MV2 until the pressure switch PS closes.
S is supplied from the power supply line EB2 of the second emergency brake command line before S, and after the pressure switch PS is closed, after the pressure switch PS and after the emergency brake switches EBS, E
Return line EB4 of the second emergency brake command line after BS '
Power is supplied from Therefore, as long as the brake controllers C and C 'perform the loosening operation, the solenoid valve MV2 is always supplied with power and excited to close the second discharge valve DV2, regardless of whether the pressure switch PS is opened or closed. It will be.

In this embodiment having the above configuration, when the emergency brake switch EBS 'is turned off and the emergency brake is operated on the electric command vehicle EC', as shown in FIG. Brake solenoid valve E
When the BV is demagnetized, the second brake device operates the emergency brake. At the same time, the emergency brake second relay EBR is started from the return line EB4 via the contact 2 of the connecting operation device 1.
When the power supply to the solenoid valve MV2 is cut off and the normally open contact EBR2a is opened, the power supply to the solenoid valve MV2 is cut off.
2 demagnetizes and opens the second discharge valve DV2 to reduce the pressure in the brake pipe BP. When the pressure in the brake pipe BP is reduced, the control valve CV of the air pressure command vehicle AC supplies the brake cylinder BC to operate the first brake device.

When the power supply to the return line EB4 is cut off, the emergency brake second relay EBR of the switching circuit YKC is turned off.
2 is demagnetized, but the emergency brake first relay EBR1
As described above, power is supplied from the power supply line EB2 of the second emergency brake command line via the contacts 5 and 6 of the front / rear switch 3 and the contact 4 of the connection operation device 1, and therefore, the self-normally opened contact EB
The normally closed contact EBR1b keeps the open state because it is held by R1a, and the backflow is prevented by the diode D. Therefore, the solenoid valve MV is supplied from the power supply line EB2.
2 is not powered.

Further, even when an emergency brake command is issued by the brake controller C of the electric command vehicle EC, the power supply to the return line EB4 of the second emergency brake command line is cut off, so that the emergency brake solenoid valve EBV is demagnetized and the second emergency brake solenoid valve EBV is demagnetized. In addition to the emergency brake operation of the brake device, the power supply to the solenoid valve MV2 is also cut off, so that the brake pipe BP is depressurized and the first brake device also operates the emergency brake by the control valve CV.

When an emergency brake operation is performed with the brake valve BV of the air pressure command vehicle AC, the brake valve BV
Exhausts the brake pipe BP, supplies power to the first brake command line EB1, excites the solenoid valve MV1, opens the pilot chamber of the first discharge valve DV1 to the atmosphere, and opens it to exhaust the brake pipe BP. Then, the control valve CV supplies the brake cylinder BC to operate the emergency brake. At the same time, the pressure in the brake pipe BP is reduced, so that the contact point of the pressure switch PS is opened, so that the forward line EB3 and the return line EB of the second emergency brake command line.
4, the emergency brake solenoid valve EBV
Is demagnetized, and the second brake device operates the emergency brake.

Next, a description will be given of a case where the pneumatically commanded vehicle AC is rescued in the direction shown by the arrow B with the electric commanded vehicle EC 'as the leading vehicle based on FIG.

As shown in FIG. 4, the electric command vehicles EC, E
The front-rear switch 3 of C 'is in the rear position, the front-rear switch 3' is in the front position, the connection operation device 1 is in the connection position, and the connection operation device 1 'is in the non-connection position. 9,5 ',
6 ', 8' are closed and contacts 5, 6, 8,
2 ', 4', 7 ', 9' are open.

FIG. 4 shows a starting state of the loosening operation. When the brake controller C releases the electric operation, the electric command signal from the brake controller C is transmitted to the contact 5 'of the front / rear switching device 3' through the connection. The contact 8 'of the operating device 1', the emergency brake switches EBS, EBS 'wired to the return line EB3, the contact 9 of the front / rear switching device 3, the contact 4 of the connection operating device 1, and the switching circuit YKC
Normally closed contact EBR1 of the emergency brake first relay EBR1
b, grounded via solenoid valve MV2. This solenoid valve M
The second discharge valve DV2 is closed by the excitation of V2. Therefore, at this time, the power supply of the solenoid valve MV2 is performed by the forward line EB3.
Is taken after the emergency brake switch EBS and before the pressure switch PS.

When the solenoid valve DV2 is closed, pressurized air is sent to the brake pipe BP in the same manner as described above, and by closing the pressure switch PS, the electric command signal from the brake controller C is transmitted to the front-rear switch 3 '. The contact 5 ', the contact 8' of the connecting device 1 ', the emergency brake switches EBS and EBS' wired to the return line EB3, the pressure switch PS, the contact 7 of the front / rear selector 3, the return line EB4, and the emergency brake solenoid valve EB.
V, and the second brake device is loosened and actuated by exciting the emergency brake solenoid valve EBV.
When the brake pipe BP reaches a predetermined pressure, the control valve CV
As a result, the first brake device is loosened.

When the pressure switch PS is closed, as shown in FIG. 5, the emergency brake second relay EBR2 and the emergency brake first relay EBR1 are excited from the return line EB4 via the contact 2 of the connecting operation device 1. Therefore, the normally open contacts EBR1a and EBR2a are closed, and the normally closed contact EBR1b is opened. As a result, power is supplied to the solenoid valve MV2 from the return line EB4 via the contact 2 of the connection operation device 1, the normally open contact EBR2a in the readout circuit YKC. At this time, the normally open contact EBR1a in the read-out circuit YKC is self-holding, but the power supply for this is not supplied from the power supply line EB2, but after the emergency brake switch EBS of the forward line EB3 and the pressure switch. The point taken from before the PS is different from the case where the air pressure command vehicle AC is set as the leading vehicle.

Therefore, in order to operate the emergency brake,
When the emergency brake switch EBS is turned off, the pressure switch P is provided after the emergency brake switch EBS of the forward line EB3.
Since there is no pressure before S, emergency brake first relay E
Although the normally open contact EBR1a of the BR1 does not hold itself, even if the normally closed contact EBR1b is closed, power is not supplied from the power supply line EB2, so that power supply to the solenoid valve MV2 is continuously cut off. The 2 discharge valve DV2 is kept open.

As described above, according to the first embodiment of the emergency brake reading circuit according to the present invention, when the emergency brake is operated, the emergency brake switch EBS is cut off or turned off in the electric command vehicles EC and EC '. The separation of the emergency brake command or the organized electric command vehicle EC 'by the brake controller C also ensures that both the second brake device of the electric command vehicles EC and EC' and the first brake device of the pneumatic command vehicle AC are emergency brake. Activate. Also, when an emergency brake is operated by the brake valve BV in the pneumatic command vehicle AC, the emergency brakes of both the first emergency brake of the pneumatic command vehicle AC and the second emergency brakes of the electric command vehicles EC and EC 'are surely performed. Can be activated. That is,
Pneumatic command vehicle A for any emergency braking
The emergency brakes of both C and the electric command vehicle EC can be reliably operated.

Next, a description will be given of a second embodiment of the emergency brake reading circuit according to the present invention.

In the second embodiment of the emergency brake reading circuit according to the present invention, as shown in FIG.
An emergency brake relay EBR connected to the return line EB4 of the second emergency brake command line, and the emergency brake relay EBR
And a timer delay TD connected in series to the normally closed contact EBRb. Other configurations are the same as those in the first embodiment. The description is omitted, and the characteristic portions will be described.

FIG. 6 shows a case where the electric command vehicles EC and EC 'are rescued in the direction of the arrow with the air pressure command vehicle AC as the leading vehicle, and shows the emergency brake operation state. The emergency brake relay EBR is connected to the return line EB4 of the second emergency brake command line via the contact 2 of the connecting operation device 1, and is grounded. And the emergency brake relay E
The normally closed contact EBRb of the BR is connected to the power supply line EB2 of the second emergency brake command line via the contacts 5 and 6 of the front / rear switching device 3 and the contact 4 of the connection operation device 1, and furthermore, the normally closed contact The timer delay TD is connected to the EBRb, and is grounded via the solenoid valve MV2 together with the normally open contact EBRa of the emergency brake relay EBR.

In FIG. 6, the brake controller C is in a non-pressurized state due to the emergency braking operation, and the solenoid valve MV2 is demagnetized, so that the second discharge valve DV2 is in an open state. Accordingly, the brake pipe BP is open to the atmosphere, and the pressure does not reach the predetermined pressure, so that the first brake device is operated by the control valve CV for emergency braking. At this time, also in the electric command vehicle EC, the return line EB4 of the second emergency brake command line
The emergency braking of the second brake device is performed due to no pressure applied to the second brake device. The emergency brake relay EBR is demagnetized due to no pressurization of the return line EB4 of the second emergency brake command line, the normally open contact EBRa is opened, and the normally closed contact EBRb is closed.

In the case of the release operation, in the electric command vehicle EC, when the brake controller C pressurizes the power supply line EB2 of the second emergency brake command line, the contacts 5, 6 of the front / rear switch 3 are connected. Contact 4 of actuator 1, normally closed contact EBR
b, the timer delay TD via the timer delay TD
After a predetermined time, the solenoid valve MV2 is pressurized. The pressurization of MV2 causes the second discharge valve DV2 to close.

At this time, pressurized air is sent into the brake pipe BP by a loosening operation of the brake valve BV of the air pressure command vehicle AC, and the pressure in the brake pipe BP is increased. When the pressure reaches a predetermined pressure, the pressure switch PS is closed. When the pressure switch PS is closed, the power supply line EB2 of the second emergency brake command line, the contact 5 of the front / rear switch 3, the pressure switch PS, the forward line EB3 of the second emergency brake command line, and the electric command vehicle are output from the brake controller C. Contact point 8 'of the connection operation device 1' of EC ', contact point 7' of the front / rear switch 3 ', return line EB4, emergency brake solenoid valve EB
A circuit for grounding through V is formed.

When the return line EB4 is pressurized, as shown in FIG. 7, the emergency brake relay EBR is pressurized through the contact 2 of the connecting operation device 1 to excite it, thereby setting the normally closed contact EBRb. Open and close the normally open contact EBRa. Thereby, return line EB4 of the second emergency brake command line
Is supplied to the solenoid valve MV2 through the contact 2 and the normally open contact EBRa of the connection operating device 1, and the second discharge valve DV2 is kept closed by the excitation of the solenoid valve MV2.

Therefore, as in the first embodiment, the solenoid valve MV2
Until the pressure switch PS is closed, power is supplied from the power supply line EB2 of the second emergency brake command line, and after the pressure switch PS is closed, power is supplied from the return line EB4 of the second emergency brake command line. Regardless of whether the pressure switch PS is opened or closed, the solenoid valve MV2 is excited and the second discharge valve DV2 is closed as long as the brake controllers C and C 'are loosened.

Thus, the emergency brake solenoid valve EB
When the V is excited, the second brake device is released, and also in the air pressure command vehicle AC, the brake pipe BP reaches a predetermined pressure and the first brake device is released by the release operation of the control valve CV. It will work.

In this state, when the emergency brake switch EBS is opened to operate the emergency brake, the return line EB4 is depressurized, and the emergency brake relay EBR in the read-out circuit YKC is demagnetized, so that the normally open contact is released. EB
Ra opens and the normally closed contact EBRb closes. Normally open contact EB
Ra opens and the return line EB4 is also free of pressure, so the return line EB4
Then, power supply to the solenoid valve MV2 is cut off, the solenoid valve MV2 is demagnetized, and the second discharge valve DV2 is opened. At this time, when the normally closed contact EBRb is closed, the contacts 5 and 6 of the front / rear switch 3 and the contacts 4 and 4 of the connection operation device 1 are connected to the power line EB2.
b, the circuit grounded via the timer delay TD and the solenoid valve MV2 is restored, but the action of the timer delay TD delays the power supply to the solenoid valve MV2 for a predetermined time. As a result, the power supply to the solenoid valve MV2 is cut off for a predetermined time, the second discharge valve DV2 is opened, and the brake pipe BP is depressurized, so that the first brake device can operate the emergency brake. Has become.

[0055]

As described above, according to the present invention, the power supply for the second discharge valve is taken in front of the pressure switch in the case of an emergency, and the pressure in the brake pipe is turned on and the pressure switch is closed. After the emergency brake of the electric command vehicle is loosened, to take the return from the second emergency brake command line, there is no need to provide a power source for controlling the solenoid valve of the second discharge valve separately from the power source from the brake controller. The present invention is not applicable to vehicles having no electric connection terminal. Then, in response to any emergency brake command, the emergency brakes of both the pneumatically commanded vehicle and the electric commanded vehicle are operated, and as long as there is an emergency brake command, there is no slack.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a first embodiment of an emergency brake reading device according to the present invention, showing a state in which a pneumatically commanded vehicle is a leading vehicle and a loosening operation is started.

FIG. 2 is a circuit diagram showing a loosened state of the first embodiment.

FIG. 3 is a circuit diagram showing an emergency brake operation state of the first embodiment.

FIG. 4 is a circuit diagram showing a loosening operation start state in which the first vehicle is the electric command vehicle according to the first embodiment.

FIG. 5 is a circuit diagram showing a state in which the loosening state has been completed from the loosening operation start state.

FIG. 6 is a circuit diagram showing an emergency brake operation state of a second embodiment of the emergency brake reading device according to the present invention.

FIG. 7 is a circuit diagram showing a state in which the second embodiment is loosened.

FIG. 8 is a circuit diagram showing a preparation state for using the conventional emergency brake reading device.

FIG. 9 is a circuit diagram showing an emergency brake operation state of the conventional emergency brake reading device.

FIG. 10 is a circuit diagram showing a loosened state of the conventional emergency brake reading device.

FIG. 11 is a circuit diagram showing an emergency brake operation state of the conventional emergency brake reading device.

[Explanation of symbols]

 EB1 First emergency brake command line BP Brake pipe DV1 First discharge valve AC Pneumatic command vehicle EB2 Power supply line of second emergency brake command line EB3 Forward line of second emergency brake command line EB4 Return line of second emergency brake command line EBS emergency Brake switch EC Electric command vehicle PS Pressure switch DV2 Second discharge valve YKC switching circuit YKC 'switching circuit YKC "switching circuit

Claims (1)

(57) [Claims] A first emergency brake command line which is always pressurized without applying pressure and which is pressurized during an emergency brake; a brake pipe which is always kept at a predetermined pressure and is reduced to atmospheric pressure during an emergency brake; A first discharge valve that closes the valve without pressurization to shut off the brake pipe from the atmosphere, opens the valve by pressurizing the first emergency brake command line, and opens the brake pipe to the atmosphere, and air pressure of the brake pipe A pneumatic command vehicle having a pneumatic command type first brake device responsive to a second emergency brake command line which is reciprocated between the vehicles and is constantly pressurized and non-pressurized during emergency braking; A normally closed emergency brake switch arranged on the forward line of the brake command line, and an electric command vehicle having an electric command type second brake device connected to the return line of the second emergency brake command line. A pressure switch disposed on the outward line of the second emergency brake command line, a contact that closes when the air pressure of the brake pipe reaches a predetermined pressure, A second discharge that opens the valve by pressurizing the second emergency brake command line to shut off the brake pipe from the atmosphere and opens the valve by no pressurization of the second emergency brake command line to open the brake pipe to the atmosphere. An emergency brake reading device comprising: a valve; and a power switch interposed between the second emergency brake command line and the second discharge valve, and a power supply for the second discharge valve in the case of an emergency Urme. And a switching circuit for taking a return from the second emergency brake command line after the brake pipe pressure is applied, the pressure switch is closed, and the emergency brake of the electric command vehicle is loosened. Normal brake 読換 apparatus.