JPS6013203Y2 - Deadman control device for vehicles - Google Patents

Description

[Detailed description of the invention] When a train driver falls into an abnormal state such as fainting while driving a railway vehicle, this abnormal state is detected and the train is turned off.
A so-called deadman device for automatically applying the brakes is often used.

This type of abnormality detection mechanism is such that the handle of the main controller is a flip-up type, and the handle is held down under normal conditions, but when the driver experiences an abnormal condition, the driver's hand becomes weak. There is a method that detects when the vehicle is flipped up, a method that similarly has a push button on the handle and is operated by pressing it during normal operation, and a method that uses a foot pedal, which is operated by pressing the pedal during normal operation. A variety of methods are used, including the following:

FIG. 1 shows the constituent countries of a dead man control device showing a typical example of its mechanism.

In FIG. 1, 1 is the main handle of the main controller (hereinafter referred to as the deadman lever), and 2 is a spring, which is used by the driver during driving by holding down the deadman lever 1 as shown by the broken line.

3a and 3b are contacts that are normally closed and contacts that are normally open of a switch that opens and closes in conjunction with the position of the dead man lever 1, contact 3a is connected to the power line circuit, and contact 3b is connected to the emergency brake circuit. .

Now, when the dead man lever 1 is pressed down from the direction A shown in the figure, the contact 3a closes and the contact 3b opens, and when the dead man lever 1 flips up, the contact 3a opens and the contact 3b opens.
is closed.

Therefore, while driving, let go of the detsutman lever 1,
When the dead man lever 1 springs up, the contact point 3a opens, thereby turning off the power circuit and at the same time issuing an emergency brake command to operate the emergency brake.

Also, depending on the system, there is no operating contact for the power circuit shown in Figure 1, and in some systems, the power circuit is cut off by an ink lock on the brake circuit side when the emergency brake is activated in the event of an abnormality, and depending on the brake method, there is a contact for the emergency brake. A type that is not always open but always closed is also used.

Since this dead man device is for use in case of an abnormality while the vehicle is running, it is desirable that it not be operated while the vehicle is stopping at a station.

Otherwise, you would have to hold down the det man lever even when the car was stopping at a station, or you would have to release the det man lever, which would cause unnecessary emergency braking to be activated while the car was stopped.

To this end, various methods have been used in the past to allow the driver to release his/her hand from the dead man lever while the vehicle is stopped.

A typical method is to provide a contact that closes in the off position when the master controller is in the off position, thereby killing the deadman emergency brake contact so that the emergency brake will not operate.

However, in this system, the dead man device becomes ineffective even during so-called coasting operation, which is unfavorable from a safety standpoint.

Therefore, there is a method in which a contact point of the brake controller is used instead of the off-position contact point of the master controller.

If the brake controller's brake strength is used to kill the detman device using a contact point that operates at a certain level or higher, the detman device will generally be effective while the vehicle is running, but when the vehicle stops at a station, The brakes must always be applied when the driver releases his/her hand, and when starting the vehicle, the driver must release the brakes and then power the vehicle, resulting in a delay in vehicle response.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention aims to provide a vehicle dead man control device that does not cause any problem even when the vehicle is stopped and releases the dead man lever, and is also excellent in safety.

The present invention will be explained below based on the drawings of the embodiments.

FIG. 2 shows the configuration of an embodiment of the vehicle dead man control system according to the present invention. For the sake of simplicity, FIG. 2 shows a dead man emergency brake circuit.

In FIG. 2, 1 is a dead man lever, 2 is a spring, and 3b is a contact that is normally open for a switch that opens and closes in conjunction with the position of the dead man lever 1.
．． They are of similar mechanism corresponding to those of 3b.

4 is a speedometer generator, 5 is a speed detector circuit that receives a signal from the speedometer generator 4 and excites the output relay 6 at a certain speed (for example, 3 kwt/n) or higher; 6a is an a contact of the output relay 6.

When the dead man lever 1 is pressed from the direction A as shown by the broken line, the contact 3b is opened and the dead man lever 1
The contact 3b is closed at the position of the solid line where the voltage jumps up.

Therefore, when the dead man lever 1 springs up while the vehicle is operating at a speed higher than the above-mentioned certain speed, the contact point 3b closes, an emergency brake command is issued, and the emergency brake is activated.

Since the output relay 6 is demagnetized while the vehicle is stopped, the contact 6a is open, and even if the driver releases the dead man lever 1 and the contact 3b closes, the emergency brake will not work.

FIG. 3 shows an embodiment in which the emergency brake contact closes in the event of an abnormality.

Here, the symbols shown in FIG. 3 correspond to those in FIGS. 1 and 2 described above, and 6b indicates the b contact of the output relay 6.

Contact point 6b is closed when the vehicle is stopped, so the emergency brake does not work.

Note that as the speed detector and output relay, it is also possible to use a normally installed stop detection relay for ATC or a door closing safety device relay.

As explained above, according to the present invention, it is possible to obtain a high-security dead man control device with a simple circuit.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a typical example of a conventional dead man control device, FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a block diagram showing another embodiment of the present invention. 1...Detsutman lever, 3a...Contact that is normally closed, 3b...Contact that is normally open, 4...Speedometer generator, 5 ...Speed detector circuit, 6...Output relay, 6a...
...A contact of output relay 6, 6b...B contact of output relay 6.

Claims (1)

[Scope of utility model registration request] When the vehicle is stopped, the emergency brake contact that operates in conjunction with the vehicle dead man device is demagnetized using a relay contact that is operated by a separately installed speed detector. A control device for a vehicular det man, characterized in that the det man device is configured so that an emergency brake does not operate even when the det man device is operated.