JPH09123721A - Tail lamp and brake lamp lighting control system of a rail and land traveling work wagon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tail lamp and brake lamp lighting control system of a track and land traveling work wagon capable of performing safe traveling without recognizing the lighting of a tail lamp and a brake lamp for the red or yellow signal for a railway by mistake when the work wagon travels on a rail or by causing other vehicles to surely recognize the lighting of the tail lamp and the brake lamp when traveling on a public road. SOLUTION: A rail and land traveling work wagon having tail and brake lamps in the rear side of a vehicle is provided with a track traveling wheel bulging detecting means 1 for detecting the bulging of a track traveling wheel and a putting-out means 2 for controlling the flickering of the tail lamp and the brake lamp 5. When track traveling wheel bulging is detected, this bulging is detected by the detecting means 1 and according to its detected signal, the putting-out means 2 shuts off a power supply line for the tail lamp and the brake lamp 5 and puts out the light. When the track traveling wheel is stored for traveling on a road, the putting-out means 2 connects the power supply line and thus, lighting and putting out of the tail lamp and the brake lamp 5 are performed according to the operation of a normal traveling time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railroad work vehicle that can run on road and rail rails, and more particularly to a taillight and brake light lighting control system for the railroad work vehicle.

[0002]

2. Description of the Related Art A so-called railroad work vehicle is often used for maintenance and inspection of trolley wires and various equipment installed along railroad rails. This railroad work vehicle is constructed on the basis of a vehicle such as a truck that travels on the road, and is equipped with a boom that can be lifted and swung freely on the vehicle body. The lower part of the is equipped with iron wheels (railway wheels) for running on railroad rails. This iron wheel can be extended (lowered) and stored freely with respect to the vehicle body. When this work vehicle travels on railroad rails, the iron wheel is projected and stored when traveling on the road. To be done. In such a railroad work vehicle, the vehicle travels on the road to the vicinity of the work site and moves on the rail for rail from near the work site to the work site. Thereby, it is possible to quickly arrive at the work site. Then, by operating the boom up and down, turning, etc., it is possible to easily perform work at a high place around the rail for rail.

Even when traveling on railroad rails using iron wheels, the work vehicle travels at night and in thick fog and travel braking is performed in the same way as when traveling on ordinary roads. During braking, the red taillight and brake light arranged at the rear end of the work vehicle are turned on. here,
The lighting of the tail lights and the brake lights is erroneously recognized as a red signal or a yellow signal of a traffic signal in a railway, which may hinder the operation of other railway vehicles. Therefore, in order to prevent this fear, a cover for covering the taillight and the brake light is provided, and when the work is performed on the rail for railroad, the worker manually or electrically covers the lighting surface with the cover, It was supposed to prevent misidentification as a red light or a yellow light.

[0004]

However, if the worker forgets to remove the cover when traveling on a public road after finishing the work on the railroad rail, the following vehicle is made to recognize the lighting of the tail light and the brake light. Is not possible and is not preferable for safety. Further, in the case of using a mechanical structure such as a cover, it cannot be said that prevention of erroneous recognition of a following vehicle such as breakage of a cover member and leakage of lights such as tail lights is perfect.

The present invention has been made in view of the above problems, and when a railroad work vehicle travels on railroad rails, the taillights and the brake lights are erroneously recognized as a red signal or a yellow signal. It is an object of the present invention to provide a tail light and brake light lighting control system for a tracked work vehicle that can surely let other vehicles recognize the lighting of the tail light and the brake light when traveling on a public road without being caused to do so. .

[0006]

In order to achieve the above object, the taillight and brake light lighting control system according to the present invention has a taillight and a brake light 5 as shown in FIG. The vehicle is provided with track running wheel overhang detection means 1 for detecting that the track running wheels are overhanging, and extinguishing means 2 for controlling turning on and off of the tail lights and the brake lights 5.

[0007]

In the tail light and brake light lighting control system as described above, when the track running wheel is projected to travel on the rail for the railroad work vehicle, the track running wheel overhang detecting means 1 is used. Detecting the protrusion of the track running wheel, the light-off means 2 cuts off the power supply lines of the tail lamp and the brake light 5 in accordance with the detection signal, and turns off the lights regardless of the operating states of the other switches 3, 4, etc. Take control. When the orbital wheels are stored for traveling on the road, the extinguishing means 2 connects the power supply lines of the taillights and the braking lights 5 to connect the ordinary taillight switch 3 and the braking switch 4 to each other.
Enable the blinking control according to the operation of. As a result, when traveling on railroad rails, the taillights and the brake lights 5 do not light up and are not mistakenly recognized as a red light or a yellow light, which requires operator's operation on public roads. It is possible to cause the following vehicle to recognize the lighting of the taillight and the brake light 5 without doing so, and thus it is possible to drive safely.

[0008]

Preferred embodiments of the present invention will be described below with reference to the drawings. First, a railroad work vehicle equipped with a safety device according to the present invention will be described with reference to FIG.
The railroad work vehicle 30 is configured based on a truck traveling on a road. For this reason, tires (wheels for road running) 32 are attached to the front, rear, left and right of the vehicle body 31, respectively. A swivel base 33 is attached to the front of the vehicle body 31 so that it can swivel with respect to the vehicle body 31. At the upper part of the swivel base 33, a boom 34 that can be undulated and expanded and contracted.
The work table 35 is attached to the tip of the boom 34.

Iron wheels (wheels for track running) 36 are attached to the front, rear, left and right sides of the vehicle body 31 so that they can be extended (lowered) and stored by an iron wheel extension mechanism. This iron wheel overhanging mechanism is provided with a pillar 39 arranged on the vehicle body 31 as shown in FIG.
And an iron wheel holding member 37 that is swingably provided at the lower end portion of the support column 39 by a pivot pin 39a, and a telescopic cylinder 40 that rocks the iron wheel holding member 37 in the vertical direction by an extension and contraction operation. There is. In the iron wheel holding member 37,
An iron wheel 36 is rotatably attached by a pivot pin 37a, and an iron wheel overhang detection switch (wheel running wheel overhang detection means) 22 is attached to a lower portion of a column 39.
A limit switch is used as the iron wheel overhang detection switch 22, and when the iron wheel holding member 37 is lowered by the extension operation of the telescopic cylinder 40, the rear end of the iron wheel holding member 37 and the actuator 22a of the iron wheel overhang detection switch 22 are operated. The limit switch is closed by abutting contact, and an ON signal (steel wheel overhanging signal) is output.

At the rear of the vehicle body 31, there are a direction indicator light, a tail light,
Rear combination lamps 11 including brake lights are arranged (arranged on the left and right rear portions of the vehicle body 31).
These lamps are powered by the vehicle battery,
Normally, it is configured to blink or light according to the operation of a direction indicating lever, an illumination light switch, a brake pedal, etc. provided in the driver's seat.

An aerial work vehicle 3 for a land track constructed as described above.
0 is a railway rail (hereinafter simply referred to as a rail)
Travel along the road to a railroad crossing near the work site located along R. At this time, each iron wheel 36 is stored so as to be pulled up with respect to the vehicle body 31 as shown by the chain line in FIG. In this case, since the iron wheel overhang detection reed switch 22 shown in FIG. 4 is in the open state, the relay solenoid 211 is in the non-excited state, which causes the switch 212 of the rear combination lamp 11 to be in the closed state. Therefore, the taillight switch 13 and the braking switch 14 are in a functional state, and the following vehicle can be made to recognize the lighting of the taillight and the braking light by, for example, a brake operation, so that the vehicle can travel safely on a public road.

When the vehicle crosses a public road and reaches a railroad crossing near the work site, the work vehicle 30 is stopped so as to cross the rail R on the railroad crossing. The stopped work vehicle 30
Center jack 3 attached to the center of the lower part of the vehicle body 31
8 is extended downward to lift its own vehicle body 31. Then, centering on the center jack 38, the vehicle body 31
Is rotated so as to be parallel to the rail R, and the iron wheel 36 is extended. As described above, each iron wheel 36 is projected so as to be lowered downward, and the iron wheel overhang detection reed switch 22 is closed when the overhang is completed. Then, the relay solenoid 211 is energized, the relay switch 21 operates, and the rear combination lamp 11
Open the power line of. As a result, the rear combination lamp 11 can be turned off regardless of the operating states of the other switches 13 and 14.

After the iron wheels 36 are projected, the center jacks 38 are reduced and the iron wheels 36 are placed on the rails R. At this time, the tires 32 also come into contact with the rails R, so that the work vehicle 30 travels on the rails R when the tires 32 are driven. 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 light is also closed, but the brake switch does not light because the power supply line is opened by the relay switch 21. Therefore, drivers of other trains do not mistakenly recognize it as a red light.

Then, the aerial work vehicle 30 can travel on the rail R and arrive at the work site, and the worker on the work table 35 can raise and lower the boom 34, extend and retract it, and swivel. I made a swing operation through the operation of 33,
It is possible to work at an arbitrary height such as above the rail R.

In the above embodiment, the limit switch 22 detects the protrusion of the iron ring 36, but the present invention is not limited to this.
The protrusion of the iron ring 36 may be detected by detecting the extension amount of the telescopic cylinder 40 or the like. Also,
When the light-off means 2 is opened and closed, it is turned on and off by the relay 21, but it is not limited to the relay 21 and other mechanical and electrical elements can be used.

[0016]

As described above, in the tail light and brake light lighting control system for a tracked work vehicle according to the present invention, the tail light and the brake light are forcibly forced by the extinguishing means when the iron wheel is extended and the vehicle is running on the rail. On the other hand, in the state where the iron wheels are stored and the vehicle is traveling on a public road, the extinguishing means is closed and the normal lighting control of the tail lights and the brake lights is performed. As a result, the braking light does not turn on when the vehicle body is braked on the rail for rail, and the tail lights, fog lights, etc. are turned off at night and in thick fog, and there is no erroneous recognition as a red signal or a yellow signal on the railway. When traveling on a public road, if the orbiting wheels are stored, the extinguishing means is not inevitably activated 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 railroad work vehicle equipped with a tail light and brake light lighting control system according to the present invention.

FIG. 3 is a side view of an iron wheel portion of the railroad work vehicle.

FIG. 4 is a circuit diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 Track running wheel overhang detection means 2 Off-light means 3 Tail light switch 4 Braking switch 5 Tail light and braking light 11 Rear combination lamp 21 Relay switch 22 Iron wheel overhang detection lead switch 30 Railroad aerial work vehicle 34 Boom 36 Iron wheel R Railway Rail for

Claims (1)

[Claims] 1. A vehicle body capable of traveling on a road, a track traveling wheel provided on the vehicle body so as to be extended and retractable for traveling on a rail for rail, and the track traveling wheel is extended. Orbital wheel bulge detection means for detecting that the vehicle body is running, a tail light that is lit when the vehicle body is traveling at night or in dense fog, and a brake light that is lit when traveling braking, and the orbital wheel bulge detection means is the track A tail light and brake light lighting control system for a railroad work vehicle, comprising: a light-off means for turning off the tail light and the brake light when it is detected that the traveling wheel is extended.