JPS6221498Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a brake switching device in an automatic brake for a railway vehicle with dual cabs.

Fig. 1 shows the configuration of a conventional system, in which 1 is a brake pipe, 2A and 2B are automatic brake valves provided on the driver's cab side, and 3A and 3B are the brake valves 2A and 3B, which supply pressurized air from an air source to the brake valves 2A and 2B. Pressure air pipes that feed into 2B, 4A and 4B are branch pipes that connect between brake pipe 1 and brake valves 2A and 2B, 5A and 5B
6A and 6B are the discharge valves provided in the branch pipes 4A and 4B, and 7A and 7B are the discharge valves 6A and 6B.
The dead man foot valves 8A, 8B and 9A, 9B connected to the balance air reservoir pipe 5
A, 5B and foot valves 7A, 7B and discharge valves 6A, 6
This is a brake switching cut-off installed in the conduit between B, and in automatic brakes for railway vehicles with dual cabs as described above, the brake valve and deadman foot valve of either cab. is on the operation side, and the other brake valve and deadman foot valve are on the non-operation side, but it is necessary to keep the brake valve and deadman foot valve on the non-operation side inactive. For this reason, when changing over the driver's cab, it was necessary to change over the main controller for driving and at the same time change over the brake valve and deadman foot valve. Now, in the above-mentioned conventional system, when switching the operating side of the brake from the brake valve 2A to the 2B side, after applying the automatic brake, the shutoff valve 8
A and 9A are shut off, and then the handle of the brake valve 2B is placed in the brake position, the shutoff tips 8B and 9B are opened, and the emergency brake is switched by stepping on the foot valve 7B so that it is not activated.

However, with the above-mentioned conventional device, there was a problem in that the four closing locks 8A, 8B, 9A, and 9B had to be opened and closed when switching, making the switching operation cumbersome.

The present invention has been proposed in view of the above points, and its purpose is to provide a brake switching device that is extremely easy to switch.

The present invention provides electromagnetic switching valves that are switched in conjunction with the switching of the main controllers on both sides, and connects the pressure air pipes from the air source to the brake valves on both sides and the brake valves on both sides via the electromagnetic switching valves. Communication between the discharge valve provided in the branch pipe between the brake pipes and the dead man foot valves on both sides can be disconnected from each other, and the balance air reservoir pipes from the brake valves on both sides are connected to the branch pipe through a double check valve. It is characterized by being connected to the electromagnetic switching valve as described above, so that when the cab is switched, when the brake is applied and the main controller is switched, the electromagnetic switching valve also operates in conjunction with this. On the side that is switched and becomes the non-operating side,
The pressurized air pipe to the brake valve and between the deadman foot valve and the discharge valve are each cut off, while on the operating side, they are communicated with each other,
As a result, the brake valve and dead man foot valve are switched, and the operating side of the double check valve is also opened by pressurized air from the brake valve side, which is the operating side, and the brake is switched at the same time as the main controller is switched. It will be done. Therefore, there is no need to open and close the shutoff lock as in the conventional type, and the brake switching operation becomes extremely simple.

Hereinafter, the present invention will be explained based on illustrated embodiments.
In Fig. 2, 11 is a brake pipe, 12A, 1
2B is an automatic brake valve provided on each cab side; 13A and 13B are pressure air pipes that send pressurized air from an air source to the brake valves 12A and 12B; 14 is a brake pipe 11 and a brake valve 12A;
12B, two branch pipes 14A, 1
4B and is connected to brake valves 12A and 12B. 15A, 15B are brake valves 12
Balance air reservoir pipes from A and 12B are connected to the branch pipe 14 via a double check valve 20.
16 is a discharge valve provided in the branch pipe 14, 17A,
Reference numeral 17B represents a deadman foot valve provided on each driver's cab side, and is connected to the discharge valve 16 via pipes 19A, 19B, and 19. Reference numerals 18A and 18B are electromagnetic switching valves that are interposed in the pressure air pipe 13A and the pipe line 19A, and in the pressure air pipe 13B and the pipe line 19, respectively, and are switched in conjunction with a switching electric switch of a main controller (not shown). It connects and blocks the above pipes, respectively.

In the above configuration, when the driver's cab is switched, the main controller is also switched. After applying the brakes, when an electrical switching switch of a main controller (not shown) is switched, the electromagnetic switching valves 18A and 18B are switched in conjunction with this. Now, to explain the case of switching the operation side from the brake valve 12A side to the 12B side, the electromagnetic switching valves 18A and 18B
In conjunction with switching of the main controller, the electromagnetic switching valve 18A switches between the air pipe 13A and the pipe line 1
9A are respectively shut off, solenoid switching valve 18B
The air pipe 13B and the pipe line 19B are switched to a state in which they are in communication with each other. As a result, the 18A and 17A sides of the automatic brake valve and foot valve
After the switching to the B and 17B sides is completed, continue to depress the foot valve 17B so that the emergency brake does not operate. The double check valve 20 is automatically switched based on the pressure difference between the balance air reservoir pipes 15A and 15B, and when the brake valve is switched, the pipe on the operating side opens and the pipe on the non-operating side opens. The pipe on the side becomes closed.

As described above, since the brake can be switched in conjunction with the switch of the main controller, there is no need to open and close the shutoff lock as in the conventional system, and the brake can be switched extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional one, and FIG. 2 is a block diagram showing one embodiment of the present invention. 11... Brake pipe, 12A, 12B... Automatic brake valve, 13A, 13B... Pressure air pipe, 1
4, 14A, 14B...branch pipe, 15A, 15B...
...Balance air reservoir pipe, 16...Discharge valve, 17A,
17B...Foot valve, 18A, 18B...Solenoid switching valve, 19, 19A, 19B...Pipeline, 20...Double check valve.

Claims (1)

[Scope of utility model registration request] An electromagnetic switching valve is provided that can be switched in conjunction with the switching of the main controllers on both sides, and the pressure air pipe from the air source to the brake valves on both sides and between the brake valves on both sides and the brake pipe are connected through the electromagnetic switching valve. Communication between the discharge valve provided on the branch pipe and the dead man foot valves on both sides can be disconnected from each other, and the balancing air reservoir pipes from the brake valves on both sides are connected to the branch pipe via a double check valve. A brake switching device characterized by: