JP3624035B2 - Control system for taillights and brake lights of work vehicles for track and land - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an orbital work vehicle capable of traveling on roads and railroad rails, and further relates to a taillight and brake light lighting control system for the orbital work vehicle.
[0002]
[Prior art]
A so-called track-and-rail work vehicle is often used for maintenance and inspection of trolley wires and various facilities installed along railroad rails. This track-and-rail work vehicle is configured on the basis of a vehicle that travels on a road such as a truck. The vehicle body has a boom that can freely move up and down, and has a work table attached to the tip of the boom. An iron wheel (orbital traveling wheel) for traveling on railroad rails is provided at the lower part of the rail.
The steel wheel can be extended (lowered) and retracted from the vehicle body, and when the work vehicle runs on railroad rails, the steel wheel is overhanged, and stored when traveling on the road. Is done.
In such a railroad work vehicle, the vehicle travels on the road to the vicinity of the work site, and travels on the rail for rail from the work site to the work site. Thereby, it can arrive at a work site quickly. Then, by raising and lowering the boom, turning and the like, it is possible to easily perform work at a high place around the rail for railroads.
[0003]
Even when traveling on railroad rails with iron wheels, the work vehicle travels at night and during foggy conditions and is braked in the same way as during normal road driving, so work during nighttime and foggy conditions and during braking The red taillights and brake lights on the rear end of the car are lit. Here, the lighting of the tail light and the brake light may be mistaken as a red signal or a yellow signal of a traffic signal in a railway, and there is a possibility that the operation of other railway vehicles may be hindered. Therefore, in order to prevent this fear, a cover for covering the taillight and the brake light is provided, and when working on the rail for the railway, the operator covers the lighting surface with the cover manually or by an electric device, It was intended to prevent misidentification with a red signal or a yellow signal.
[0004]
[Problems to be solved by the invention]
However, if the work on the rail for the railway is finished and the operator forgets to remove the cover when traveling on the public road, it becomes impossible for the following vehicle to recognize the lighting of the taillight or the brake light, which is not preferable for safety. In addition, in the case of a mechanical structure such as a cover, prevention of misidentification of the following vehicle such as breakage of a cover member and leakage of light such as a taillight was not perfect.
[0005]
The present invention has been made in view of such a problem, and when a railroad work vehicle travels on a railroad rail, the lighting of the taillight and the brake light is not mistaken for a red signal or a yellow signal. An object of the present invention is to provide a taillight and brake light lighting control system for a work vehicle for track and land that allows other vehicles to reliably recognize the lighting of the taillight and brake light when traveling on public roads.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, as shown in FIG. 1, the taillight and brake light lighting control system of the present invention has an orbital running wheel attached to an orbital work vehicle in which a taillight and a brake light 5 are arranged. The track running wheel overhang detection means 1 for detecting that the light has been emitted, and the light extinguishing means 2 for controlling the turning on and off of the tail light and the brake light 5 by cutting off the power supply to the tail light and the brake light 5 are provided. It is configured.
[0007]
[Action]
In such a taillight and brake light lighting control system, when a track-working vehicle projects a track traveling wheel to travel on a railroad rail, the track traveling wheel overhang detection means 1 is used for track traveling. In response to the detection signal, the light extinguishing means 2 shuts off the power supply line of the taillight and the brake light 5, and performs control to turn off the light regardless of the operating state of the other switches 3, 4 and the like. . When the orbital running wheel is stored for traveling on the road, the extinguishing means 2 connects the power supply line of the taillight and the brake light 5 so that the normal taillight switch 3 and brake switch 4 can be operated. The flashing control can be performed accordingly.
As a result, when traveling on railroad rails, the taillights and brake lights 5 do not light up and are not mistaken for a red signal or a yellow signal, and an operator's operation is required on public roads. Therefore, it is possible to make the following vehicle recognize the lighting of the taillight and the brake light 5, so that the vehicle can travel safely.
[0008]
【Example】
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, a track-and-work vehicle equipped with a safety device according to the present invention will be described with reference to FIG.
This track-and-rail work vehicle 30 is configured based on a truck traveling on a road. For this reason, tires (road driving wheels) 32 are attached to the front, rear, left and right of the vehicle body 31, respectively. A swivel base 33 that can turn freely with respect to the vehicle body 31 is attached to a front portion of the vehicle body 31. A boom 34 that can be raised and lowered is pivotally mounted on the upper part of the swivel base 33, and a work table 35 is attached to the tip of the boom 34.
[0009]
Iron wheels (orbital running wheels) 36 are attached to the front, rear, left and right of the vehicle body 31 so as to be extended (lowered) and retracted by an iron wheel extension mechanism. As shown in FIG. 3, the iron ring extending mechanism includes a support post 39 disposed on the vehicle body 31, an iron wheel holding member 37 swingably provided at a lower end portion of the support post 39 by a pivot pin 39a, and an extension and contraction. The telescopic cylinder 40 is configured to swing the iron ring holding member 37 in the vertical direction by operation.
An iron wheel 36 is rotatably attached to the iron wheel holding member 37 by a pivot pin 37a, and an iron wheel overhanging detection switch (orbit running wheel overhang detecting means) 22 is attached to the lower portion of the support post 39. This iron ring extension detection switch 22 is a limit switch. When the iron ring holding member 37 is lowered by the extension operation of the telescopic cylinder 40, the rear end portion of the iron ring holding member 37 and the actuator 22a of the iron ring extension detection switch 22 are When the contact is made, the limit switch is closed and an ON signal (iron ring extension signal) is output.
[0010]
A rear combination lamp 11 including a direction indicator lamp, a tail lamp, and a brake lamp is disposed at the rear portion of the vehicle body 31 (disposed on the left and right of the rear portion of the vehicle body 31).
These lamps are supplied with power from a vehicle battery, and are usually configured to blink or light in response to operations of a direction indicator lever, an illumination light switch, a brake pedal, and the like provided in the driver's seat.
[0011]
The aerial work platform 30 for the track and land thus configured first travels on the road to a railroad crossing near the work site located along a rail for rails (hereinafter simply referred to as a rail) R. At this time, each iron wheel 36 is stored so as to be pulled up with respect to the vehicle body 31 as indicated by a chain line in FIG.
In this case, since the iron ring overhang detection reed switch 22 shown in FIG. 4 is in an open state, the relay solenoid 211 is in an unexcited state, whereby the switch 212 of the rear combination lamp 11 is in a closed state. Therefore, the tail light switch 13 and the brake switch 14 are in a functioning state, and for example, the following vehicle can be made to recognize the lighting of the tail light and the brake light by a brake operation or the like, so that it can travel safely on a public road.
[0012]
When traveling on a public road and arriving at a level crossing near the work site, the work vehicle 30 is stopped so as to cross the rail R on the level crossing. The stopped work vehicle 30 lifts its vehicle body 31 by extending the center jack 38 attached to the lower center of the vehicle body 31 downward. Then, the vehicle body 31 is turned around the center jack 38 so as to be parallel to the rail R, and the iron wheel 36 is extended. As described above, each iron ring 36 is extended so as to be lowered, but the iron ring extension detection reed switch 22 is closed when the extension is completed. Then, the relay solenoid 211 is energized and the relay switch 21 is activated to open the power line of the rear combination lamp 11. Thereby, the rear combination lamp 11 can be turned off regardless of the operation state of the other switches 13 and 14.
[0013]
After the iron rings 36 are overhanged, the center jack 38 is contracted to place each iron ring 36 on the rail R. At this time, since each tire 32 also abuts on the rail R, when the tire 32 is driven, the work vehicle 30 travels on the rail R. When the brake is depressed, the rotation of the tire 32 is braked and the work vehicle 30 stops.
At this time, the brake switch 14 of the red brake lamp is also closed, but the brake lamp is not lit because the power supply line is opened by the relay switch 21. Therefore, the driver of another train does not mistake it as a red signal.
[0014]
Then, the aerial work vehicle 30 can travel on the rail R and arrive at the work site, and an operator who has boarded the work table 35 raises and lowers the boom 34 and operates the swivel base 33. It is possible to perform a work at an arbitrary height such as above the rail R by turning it.
[0015]
In the above embodiment, the overhang of the iron ring 36 is detected by the limit switch 22. However, the present invention is not limited to this, and the iron ring 36 is detected by detecting the extension amount of the telescopic cylinder 40. The overhang may be detected. Further, when the light-off means 2 is opened and closed, it is turned on and off by the relay 21, but other mechanical and electrical elements can be used without being limited to the relay 21.
[0016]
【The invention's effect】
As described above, in the taillight and brake light lighting control system of the track work vehicle of the present invention, the taillight and brake light are forcibly extinguished by the extinguishing means in a state where the iron wheel is overhanging and traveling on the rail, In the state where the iron wheel is stored and the vehicle travels on a public road, the light-off means is closed and normal lighting control of the tail light and the brake light is performed. As a result, the brake lights are not turned on when the vehicle body is braked on the railroad rails, and the taillights, fog lights, etc. are turned off at night and in dense fog, so that they are not mistaken for red and yellow signals on the railroad. When traveling on public roads, if the orbital wheels are stored, the extinguishing means are inevitably operated and the line is connected, so that the danger of forgetting the operation can be eliminated and the vehicle can travel safely.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of the present invention.
FIG. 2 is a side view of a track and land work vehicle including a taillight and brake light lighting control system according to the present invention.
FIG. 3 is a side view of an iron ring portion of the track-rail work vehicle.
FIG. 4 is a circuit diagram showing an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wheel extension detection means 2 for track running Light extinguishing means 3 Taillight switch 4 Brake switch 5 Taillight and brake light 11 Rear combination lamp 21 Relay switch 22 Iron wheel extension detection reed switch 30 Railroad high altitude work vehicle 34 Boom 36 Iron wheel R Railway Rail

Claims (1)

A vehicle body that can run freely on the road,
To run on the rails for this vehicle body rails, the track running wheels that are provided to be retractable and retractable,
A track running wheel overhang detecting means for detecting that the track running wheel is overhanged, and
A taillight that is turned on when the vehicle body is traveling at night or in foggy conditions, and a braking light that is turned on when running and braking,
A power supply line for supplying power for turning on the taillight and the brake light;
When the track running wheel overhang detecting means detects that the track running wheel is overhanged , the tail lamp and the brake lamp among the electric lights mounted on the vehicle body via the power supply line are detected. And a lighting control system for taillights and brake lights of a working vehicle for roadway, characterized by comprising a light extinguishing means having a switch for cutting off only power supply to the vehicle.

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