JPS625822B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle that can be remotely controlled, and particularly to a vehicle that has a switch that can switch a travel control device between a remote control position and a manual control position. This invention relates to a remotely controllable vehicle with a no-drive position.

Conventionally, a vehicle is equipped with a switch that allows driving control devices such as starters and brake actuators to be switched between a remote control position such as radio control and a manual control position.
A vehicle is known in which the vehicle can be operated either remotely or manually by operating the switch. When repairing or inspecting such a vehicle, the selector switch is set to either the remote control position or the manual control position.

However, in conventional remote control vehicles of this type, the vehicle starter is not completely disconnected from the power supply even when the changeover switch is in the remote control position or the manual control position, and the radio signal is not transmitted at the remote control position. etc., or by pressing the switch button in the manual operation position, and the brake actuator is in the brake release state, resulting in erroneous operation of the changeover switch and erroneous operation of remote control equipment such as transmitters. However, there are drawbacks including the risk that the vehicle may start unexpectedly due to incorrect wiring during vehicle inspection, causing damage to people near the vehicle undergoing maintenance or objects nearby.

The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and for this reason, the present invention provides a remote control system having a changeover switch capable of switching a travel control device of a vehicle between a remote control position and a manual control position. In vehicles where this is possible, the above-mentioned changeover switch is provided with an "off" position, making it the third position, and in the "off" position, the solenoid valve that supplies pressurized fluid from the fluid pressure source to the brake operating device is opened, rendering the vehicle unable to run. It is characterized by

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The content of the present invention will be described below with reference to embodiments shown in the accompanying drawings.

The figure shows a case in which the present invention is applied to a vehicle equipped with a vehicle starter and a brake actuation device mounted on the vehicle that can be operated at a radio control position and a manual control position. 2 is a brake actuation cylinder actuated by the pressure fluid from the fluid pressure source 1; 3 is a vehicle brake; 4 is a brake actuation cylinder 2 provided between the fluid pressure source 1 and the brake actuation cylinder 2; Position electromagnetic switching valve 5 is a two-position manual switching valve 6 and 7 provided between the fluid pressure source 1 and the electromagnetic switching valve 4.
are a check valve and an accumulator which are provided between the fluid pressure source 1 and the electromagnetic switching valve 4 to compensate for the pressure reduction of the fluid pressure source 1, 8 is a receiver mounted on the vehicle, 9 is a vehicle starter, and 10 is an electromagnetic switching valve. valve 4
and a changeover switch for switching the operation of the vehicle starter 9 between three positions: manual control position A, radio control position B, and "off" position C; 11 is a vehicle control including an electromagnetic switching valve 4 receiver 8 and a vehicle starter 9; Indicates the power source for operating the device.

The electromagnetic switching valve 4 is normally pressed by a spring 12 to occupy the position shown, whereby the fluid pressure source 1
Pressure fluid from the brake cylinder 2 is caused to flow into the brake operating cylinder 2 through the check valve 6, the conduit 12a, the electromagnetic switching valve 4, and the conduit 12b to operate the brake 3, but when it is energized, it resists the force of the spring 12. is moved to another position, thereby releasing the pressure fluid in the brake actuation cylinder 2 via the electromagnetic switching valve 4 to the manual switching valve 5. Further, the manual switching valve 5 is normally pressed by a spring 14 to occupy the position shown in the figure, thereby releasing the pressure fluid sent from the electromagnetic switching valve 4 through the conduit 15 to the drain tank 16. Manual operation lever 1
7 is moved to another position against the force of the spring 14, pressure fluid is supplied from the fluid pressure source 1 to the electromagnetic switching valve 4 via the manual switching valve 5.

The electromagnetic switching valve 4 and the power source 11 are connected via a conductor 18 on one side, a contact 19 provided in the receiver 8, a conductor 20, and a changeover switch 10 set at the radio control position B, and on the other side. are electrically connected to each other via a conductive wire 21 and a changeover switch 10 set at the manual operation position A, thereby forming an electrical closed circuit. Further, between the vehicle starter 9 and the power source 11, there is a conducting wire 22 on one side;
Contacts 23 and conductive wires 24 provided in the receiver 8
and a manually operated switch 25 on the other hand via a changeover switch 10 set in radio control position B.
are electrically connected to each other via a conductive wire 26 including a switch 10 in the manual operation position A, thereby forming an electrical closed circuit. In the figure, 27 is a radio control device that controls all fluid devices and circuits mounted on the vehicle, and 28 is a manual switch for inflowing and stopping pressure fluid from the fluid pressure source 1 to the fluid devices and circuits 27. Showing the valve. The contacts 19 and 23 in the receiver 8 are turned on and off by radio signals from a remote transmitter (not shown).

Now, when the changeover switch 10 is placed in the wireless position B, the receiver 8 is powered on by the power source 11, and the vehicle is put in a brake release ready state and a reception ready state, and radio control becomes possible. To operate the brakes in this state, the electromagnetic switching valve 4 is energized and demagnetized by turning on and off the contact 19 using a wireless signal from a transmitter (not shown), thereby releasing and controlling the vehicle brake 3. I can do it. Further, at the wireless position, the vehicle starter 9 is ready to start, and can be started by closing the contact 19 using a wireless signal from the transmitter.

When the changeover switch 10 is placed in the manual position A, the vehicle is placed in a brake release enabled state and a non-receiving state, allowing manual operation. In this position, the electromagnetic switching valve 4 is energized and moved from the illustrated position to another position, so in order to operate the brakes in this state, the vehicle brake 3 must be released by operating the manual switching valve 5. and braking. Further, in this position, the vehicle starter 9 is placed in a startable state, and can be started by closing the manual switch 25.

Further, when the changeover switch 10 is placed in the "off" position C, the vehicle is placed in a braking state and a non-receiving state, and cannot be driven either by manual or wireless operation. That is, in this position, the electromagnetic switching valve 4 is demagnetized, and therefore the brakes are always applied to the vehicle, making it impossible to drive.
Further, in this position, the vehicle starter 9 is completely disconnected from the power source 11, so that the vehicle cannot be started. Therefore, when servicing a vehicle, you can work with peace of mind by setting the changeover switch 10 to the "off" position C, and instead of setting the changeover switch 10 to the manual position A or the wireless position B as in the past. It is possible to prevent dangers that may occur when performing work after setting.

Although the above embodiments have specifically described a vehicle that can be operated by radio control, the present invention is not limited to this, and can be applied to a wide range of vehicles that can be remotely controlled, such as vehicles that are operated via a power cable, for example. Further, although the above embodiment has been described in particular in relation to both the vehicle brake 3 and the vehicle starter 9,
Even when only the vehicle brake 3 is operated in the "OFF" position C of the changeover switch, the vehicle can be sufficiently rendered unable to run.

As described above, according to the present invention, in a remotely controllable vehicle having a changeover switch capable of switching the travel control device of the vehicle between a remote control position and a manual control position, the switch is provided with an "off" position, At the off position, the solenoid valve that supplies pressurized fluid from the fluid pressure source to the brake actuating device is opened, rendering the vehicle inoperable, and maintenance work is then carried out by setting the changeover switch to the remote control position or manual control position as in the past. To prevent damage to people and property in the surrounding area due to the sudden start of the vehicle caused by incorrect operation of the changeover switch and remote control equipment, or incorrect wiring during repair and inspection. I can do it.

[Brief explanation of the drawing]

The figure is a diagram illustrating an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Fluid pressure source, 2... Brake actuation cylinder, 3... Vehicle brake, 4... Solenoid switching valve, 9
... Starter, 10 ... Changeover switch, A ... Manual control position, B ... Radio control position, C ... "OFF"
position.

Claims (1)

[Scope of Claims] 1. In a remotely controllable vehicle having a changeover switch capable of switching a travel control device of the vehicle between a remote control position and a manual control position, the switch is provided with an "off" position and three positions are provided. 1. A remotely controllable vehicle, characterized in that, in the "off" position, a solenoid valve for supplying pressure fluid from a fluid pressure source to a brake actuating device is opened to make the vehicle unable to run. 2. The vehicle according to claim 1, wherein the vehicle starter is further disconnected from the power source when the changeover switch is in the "off" position.