JPS62116363A - Electrical circuit for connected vehicles having dolly equipped with power plant - Google Patents

Abstract

PURPOSE:To improve steering performance and obtain the stable traveling performance and prevent the bad influence due to the mutual connection by mounting a power plant onto a dolly arranged between the connected vehicles hauled by a tractor and mounting an electric power source separated each other on the tractor side and the dolly side. CONSTITUTION:A connected vehicle consisting of a plurality of trailers 2, 4, and 6 and a plurality of dollys 3 and 5 is traveled not only by the tractive force by a tractor 1 equipped with an engine 11 but the power of an engine 31 installed onto the first dolly 3. Though, in this case, the engine 11, controller 15, and a relay 37 are operated by a tractor 1 side battery 13, the circuit common to the battery 33 on the first dolly 3 side is removed, and also the circuit on the grounding side is constituted of another wiring. Further, though the relay 37 is operated by a key switch 12 on the tractor 1 side, and the meter assy 16 of the first dolly 3 is put into electric conduction, voltage is applied onto an alarm 16a and a battery 16b when the engine 31 is not in operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electric circuit for a coupled vehicle having a dolly with a power device for supplying power to the coupled vehicle towed by a tractor and a dolly with a power device.

(Prior Art) Conventionally, multi-connected vehicles in which connected vehicles (trailer) are pulled by a tractor have been used for transporting goods and the like. This type of connected vehicle has a plurality of turning points for connection, which causes a phenomenon where the tail of a fish shakes while the vehicle is running, or a jack-knifing phenomenon where the connection part is struck. In order to prevent these phenomena, a trailer support frame that extends near the rear part, a traveling device member including wheels that slide in the longitudinal direction, and a traveling device are installed on the underside of the main body of the connected vehicle, that is, the trailer. A proposal for a trailer traveling device equipped with rails to prevent rotational movement of device members was published in Japanese Patent Application Laid-Open No. 1983-1983.
It is shown in Japanese Patent No. 85765.

(Problems to be Solved by the Invention) In the proposal for a trailer traveling device disclosed in the above-mentioned Japanese Patent Laid-Open No. 58-857.65, a plurality of connected trailers are towed only by the power of a tractor. A tractor with a large output corresponding to the load is required, and furthermore, if the load distribution of the tractor is small with respect to the load of the trailer being towed, there is a risk that the drive wheels of the tractor will spin and become unable to travel.

In addition, when a dolly with a power unit is used to assist the tractor's tractive force, the power load increases for both power units, and when starting, which requires a large amount of power, the battery capacity becomes insufficient. arise. Note that if the power supply circuits on the tractor side and the dolly side are connected in common, the charging generator circuits will be paralleled, and if a significant imbalance occurs, it may cause an unexpected burnout accident.

Furthermore, if a dolly with a power unit is used as a coupled vehicle and is towed only by the power unit on the tractor side without operating the power unit on the dolly side, the torque converter of the power unit on the dolly side will cause reverse drive. There also arises the problem of damage.

The present invention has been made in view of these problems,
The purpose of this is to have separate power supplies for the tractor and dolly, and to turn on the power on the dolly in the tractor's power unit starting circuit, when the dolly's power unit is not started. The object of the present invention is to provide an electrical circuit for a coupled vehicle having a powered dolly which sometimes activates a warning device.

(Means for Solving the Problem) According to the present invention, the power device is mounted on a dolly disposed between a tractor having a power device and a connected vehicle towed by the tractor, and the power device is mounted on a dolly disposed between a tractor having a power device and a connected vehicle towed by the tractor. The vehicle is equipped with power supplies separated from each other, and has a means for turning on the power to the dolly by operating the start switch of the tractor's power unit, and a means for issuing a warning when the dolly's power unit is not operating. A power supply circuit for a motorized vehicle with a powered dolly is provided, and a power supply circuit for a motorized vehicle with a powered dolly in which the warning is issued upon release of the parking brake is provided.

(Function) Since the present invention has a power unit mounted on a dolly placed between connected vehicles towed by a tractor, the traction force of the tractor can be assisted, and the arrangement of the dolly and the mounted power unit can be adjusted appropriately. This output improves maneuverability and provides stable driving performance.

Furthermore, in the present invention, the tractor and dolly are equipped with power supplies that are separated from each other, so that the negative effects caused by mutual coupling are prevented! 2, and problems caused by insufficient power supply capacity are also reduced.

Furthermore, we have provided a means to turn on the dolly's power supply by operating the key switch on the tractor's engine, which makes it possible to energize the dolly's meter assembly, and also allows parking when the dolly's engine is not rotating. Since a means is provided to issue a warning when the brake is released, this has the effect of alerting the driver and preventing damage accidents caused by reverse driving of the transmission of the engine on the dolly side.

(Example) Next, an example of the present invention will be described in detail using the drawings.

FIG. 1 is a configuration block diagram showing one embodiment of an electric circuit of a coupled vehicle having a dolly with a power device according to the present invention,
FIG. 2 is an explanatory diagram showing an example of a triple-connected vehicle.

In FIG. 2, l is a tractor equipped with a power unit, which is positioned at the front of the connected vehicle and pulls a plurality of trailing trailers. Wheels 1a indicated by double circles indicate driving wheels driven by a power device. 2 is a first trailer towed by a tractor, and a first dolly 3 is connected to the rear. The first dolly 3 is equipped with an engine 31 that assists the tractive force of the tractor 1, and drives the wheels 3b via a torque converter-equipped transmission 3a. Then, the second trailer 4 connected to the rear and the third trailer 6 connected via the second dolly 5 are pulled, and the tractor l
The structure is designed to assist in the traction of the vehicle.

Note that the output of the engine 31 mounted on the first dolly 3 is smaller than the output of the power plant of the tractor l. For example, if the power plant output of the tractor l is 510 horsepower, the power plant output of the first dolly is It is assumed to be 330 horsepower, and the output ratio is approximately 6:
As shown in FIG. This prevents the phenomenon of jack-knifing and jack-knifing of the joints.

In FIG. 1, 11 is an engine mounted on a tractor l, and has a starter lla. When the key switch 12 provided on the driver's seat of the tractor 1 is turned on, power is supplied from the battery 13 on the tractor 1 side to the starter lla via the S inspection switch 32, and the engine 11 starts operating. Note that the S inspection switch 32 is connected to the first dolly 3.
The circuit is normally closed, and when the door of the inspection box 3C is opened during inspection work on the first dolly 3, the S inspection switch 32 is turned off, and the circuit is normally closed. Even if the key switch 12 is turned on,
The engine 11 is configured not to start.

The key switch 14 is provided on the tractor l and is a switch for operating the engine 31 mounted on the first dolly 3. When the key switch 14 is turned on, power is supplied from the battery 33 provided on the first dolly 3 to the power selector switch 34. Power is supplied to the starter 31a provided in the engine 31 via the starter 31a, and the engine 31 starts operating. The power selector switch 34 is housed in the inspection box 3C, and when the door is opened during inspection work, the circuit from the battery 33 is switched to the key switch 35 (described later), but the key switch 1 is normally switched on.
Connected to the circuit on the 4th side.

The key switch 35 is provided on the first dolly 3 and is a switch for operating the engine 31 for inspection.The door of the inspection box 3C is opened and the power changeover switch 34 is switched to the key switch 35 side.

The engine 31 is operated for inspection.

Reference numeral 15 denotes a controller which inputs signals from various sensors provided on the tractor 1 side and the first dolly 3 side, although not shown, and outputs control signals to various seven cutter units. When transmitting and receiving these input/output signals, a photocoupler and an isolation amplifier are used inside the controller 15, and although the signals are passed, the tractor l
A structure in which the side and the first dolly 3 side are separated is used. Power for the controller 15 is supplied from the battery 13 via a C inspection switch 36 housed in the inspection box 3c, and when the door is opened during inspection work, the supply is cut off and the controller 15 malfunctions due to abnormal input during inspection. is prevented.

Reference numeral 16 denotes a meter assembly (meter assembly) installed in the driver's seat of the tractor L, which is connected to the engine 31 of the first dolly 3.
Related driving meters and warning lights are installed.

Power for the meter assembly 16 is normally supplied from a battery 33 via a power changeover switch 34 to a key switch 14, and at the time of inspection, the power changeover switch 34 is switched, so power is supplied from a key switch 35.

However, on the tractor l side, without operating the key switch 14, by operating the key switch 12 for the engine 11,
The relay 37 is activated to close the contact 37a, and the meter assembly 16 is configured to be energized. In this case, since the engine 31 of the first dolly 3 does not start, the voltage of the battery 33 is applied to the warning light 16a provided in the meter assembly 16 by the oil pressure and charge warning signal, and the alarm buzzer 16b connected in parallel to the warning light 16a is activated. A voltage is also applied to.

17 is a parking relay, and when the parking brake is released by operating a parking lever (not shown) provided on the tractor L, the parking switch 18 becomes an open circuit, the parking relay 17 loses its suction force, and the contact 17
It is configured to close a. Therefore, if the driver releases the parking brake for a start operation without knowing that the engine 31 is in a stopped state, the warning buzzer 16b is configured to issue an alarm by actuating the parking switch 1B and the parking relay 17. .

Next, the operation of this embodiment having such a configuration will be explained.

In FIG. 2, the traction force that drives the connected vehicle is not only the traction force of the tractor 1 but also the engine 31 of the first dolly 3.
The traction force is also added to make the connected vehicle travel. Also,
Since the output ratio of the power devices of the tractor 1 and the first dolly 3 and the arrangement of the first dolly 3 in the coupled vehicle are appropriately selected, the coupled vehicle runs stably.

In FIG. 1, the battery 13 on the tractor l side is connected to the engine 11. Controller l 5 't') Power is supplied to the IJ relay 7 to operate each, but there is no common circuit with the battery 33 on the first dome 93 side, and the circuit on the ground side is also wired separately, so Although not shown, the circuits of the charging generators are also independent of each other, and adverse effects between them can be prevented.

By operating the key switch 12 on the tractor 1 side, the relay 37 can be activated and the meter assembly 16 of the first dolly 3 can be energized except during inspection work, but if the engine 31 is not running, the warning light 16a and alarm buzzer will not work. A voltage is applied to b.

When the parking brake is released, the parking switch 18 is turned off and the parking relay 17 is activated, which activates the warning light 16a and warning buzzer 16b to issue a warning and notify the driver that the engine 31 has stopped. Let me know.

Although the present invention has been described by way of one embodiment, various modifications can be made within the scope of the gist of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As explained in detail above, the present invention uses an engine mounted on the dolly to pull the connected vehicles in addition to the traction force of the leading tractor, so a particularly high-output tractor is not required and the load distribution is improved. It is possible to prevent the tractor drive wheels from spinning due to inadequacies, and by arranging the dolly mounted on the engine and setting the engine to an appropriate output, the running performance of the connected vehicle is stabilized and the steering stability is improved. .

Furthermore, the present invention is equipped with separate power supplies for the tractor and dolly, and their circuits are also separated from each other, reducing the risk of insufficient power supply capacity even when a large amount of power is required to start the engine. Since there is no need to connect charging generators in parallel, failures due to unexpected accidents can be prevented.

Note that the power on the dolly side can be turned on by operating the key switch of the engine on the tractor side, and the meter assembly provided on the dolly can be energized. If you release the parking brake when the Dori's engine is not rotating, the parking switch and parking relay will operate, and the warning light and buzzer will operate to warn the driver. This has the effect of preventing damage caused by driving the transmission in reverse.

Further, according to the present invention, since the power to the controller is turned off during inspection work on the dolly side, it is possible to prevent erroneous commands from the controller issued by abnormal signals during inspection work.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the electrical circuit of a coupled vehicle having a dolly with a power unit according to the present invention, and FIG. 2 is an explanatory diagram showing an example of a triple coupled vehicle. DESCRIPTION OF SYMBOLS 1... Tractor, 3... First dolly, ti... Engine, 12... Key switch, 13... Battery, 16... Meter assembly (meter assembly), 1
6a...warning light, 16b...warning buzzer, 17...
Parking relay, 18... Parking switch, 3
1...Engine, 33...Battery, 37...Relay.

Claims (2)

[Claims] (1) The power device is mounted on a dolly placed between a tractor having the power device and the connected vehicle towed by the tractor, and the tractor and the dolly are equipped with power supplies that are separated from each other, and A dolly with a power unit, characterized in that it is provided with means for turning on the power of the dolly by activation of a start switch of the power unit of the tractor, and means for issuing a warning when the power unit of the dolly is not in operation. The electric circuit of the connected vehicle with. (2) The electric circuit for a coupled vehicle having a dolly with a power unit according to claim (1), wherein the warning is issued when the parking brake is released.