JPS6116721Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a reversal memory control device for the main controller, which prevents electric cars from reversing when the main controller forgets to return the reversing handle after changing the stop position due to an overrun when stopping at a station. It is an object of the present invention to provide a control device that has a function to prevent this.

When a railway vehicle stops at a station, it may end up stopping at a stop that is too far away due to improper use of the brakes, or the like, resulting in what is called an overrun. In this case, the driver usually retreats the vehicle to its normal position.

The main controller of ordinary electric cars, internal combustion cars, etc. is equipped with a main handle that controls the speed of the vehicle, and a reversing handle that commands forward and reverse movement. To do this, use the reversing handle on the forward side to reverse, then use the main handle.

Suppose there is a station arranged as shown in Figure 1. In the figure, 1 indicates a railroad track, 2 a road or passage that intersects with the railroad track 1, 3 a railroad crossing or gate, and 4 a boarding platform. It is assumed that the vehicle is traveling in the direction of the arrow, passes the boarding platform 4, and stops. When the vehicle passes through the level crossing, the closed level crossing or gate 3 opens, and traffic on the road or passageway 2 begins. The driver switches the reversing handle on the main controller to the reverse position, operates the main handle to drive the vehicle in reverse, and corrects the stopping position to the normal position. When the driver completes handling passengers and departs, he switches the reverse handle on the main controller to the forward position and operates the main handle.
If the driver forgets to return to the forward command position, the vehicle will remain in the reverse position and the vehicle will move backward. In this case, since there is a passage or road 2 just outside the boarding platform 4, it is extremely dangerous as it may lead to an unexpected accident resulting in personal injury.

The present invention was developed to prevent the above-mentioned accidents, and once the vehicle has been driven in reverse, the powering command circuit of the vehicle will not be activated even if the vehicle is powered again after the switch is turned off.

An embodiment of the present invention will be described below with reference to FIG. In Figure 2, RY, RY1, RY2 are relays, RY-a1, RY-b1, RY1-a1, RY1
-a2, RY2-a1, RY2-b1 are the contacts of each relay, DD is the reverse current blocking diode, MC1 to MC3
is the master controller main handle contact, and RV1 to RV3 are the master controller reverse handle contact.

If you now turn the reverse handle to the "rear" position and move the main handle more than one notch from the "off" position,
A reverse command is issued, the vehicle moves backwards, and at the same time relay RY is activated.
attracts. When relay RY attracts, relay RY1
is attracted, and relay RY1 connects its own a contact RY1-a
1 is self-maintained. When the reverse power running notch is turned off (the main handle is turned OFF), the reverse command is aborted, and relay RY2 is activated by the b contact RY-b1 of relay RY and the a contact RY1-a2 of relay RY1.
is attracted, and relay RY2 connects its own a contact RY2-a
1 is self-maintained. When relay RY2 is self-holding, the b contact of relay RY2 of the reverse command line
Since RY2-b1 is opened, even if the main handle is turned one notch or more from the "OFF" position again, the reverse command line cannot be pressurized, and even in the above case, reversing can be prevented.

When the reversing handle is placed in the ``OFF'' or ``front'' position, relays RY1 and RY2 are released, and by placing the reversing handle in the ``rear'' position again, reverse driving becomes possible.

As described above, according to the present invention, possible serious accidents can be prevented by adding a simple circuit.

In addition to the relay circuit described above, a memory based on an electronic circuit may be used as the reversal position memory of the main controller.

In addition, when using the circuit of this invention, it is inconvenient when driving in reverse continuously, such as when driving on a premises.
In this case, it may be possible to short-circuit the RY2-b1 contacts using another switch.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a typical arrangement near a station, and FIG. 2 is a control circuit diagram showing an embodiment of the present invention. 1...Railway, 2...Road or passageway, 3...Railway crossing or gate, 4...Passenger platform, RY, RY
1, RY2...Relay, RY-a1, RY-b1,
RY1-a1, RY-a2RY2-a1, RY2-b
1...Contact of each relay, DD...Reverse current blocking diode, MC1 to MC3...Main controller main handle contact, RV1 to RV3...Main controller reverse handle contact.

Claims (1)

[Scope of utility model registration request] It is characterized by having a function that remembers when the vehicle has driven backwards, prevents the vehicle from starting even if a reverse command is issued again, and prevents the vehicle from driving backwards again due to forgetting to return the reverse steering wheel. A reversing memory control device for the master controller.