JP2598135Y2 - Brake light cover device for railway tracked work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track-and-work vehicle capable of traveling on road and railroad rails, and more particularly to a brake light cover device of the track-and-work vehicle.

[0002]

2. Description of the Related Art For maintenance and inspection of trolley wires and various facilities installed along railway rails, so-called track-and-rail work vehicles are often used. This track-and-land work vehicle is configured on the basis of a vehicle running on a road such as a truck, and is provided with a boom that can freely move up and down, turning operation, etc., and a work table is attached to a tip of the boom. Is provided with iron wheels (track running wheels) for traveling on rails for rails. The iron wheels can be extended (downward) and retracted with respect to the vehicle body. When the work vehicle travels on railroad rails, the iron wheels are extended, and when traveling on roads, the iron wheels are retracted. Is done. In such a track-and-land work vehicle, the vehicle travels on the road near the work site, and travels on the rails from near the work site to move to the work site. Thereby, it is possible to quickly arrive at the work site. Then, by operating the boom up and down, turning, and the like, it is possible to easily perform work at a high place or the like around the railroad rail.

[0003] Even when traveling on railroad rails with iron wheels, the work vehicle is braked in the same manner as a normal braking operation when traveling on a road. The installed red brake light comes on.
Here, the lighting of the brake light may be erroneously recognized as a red signal of a traffic signal in a railway, and may hinder the operation of other railway vehicles. Therefore, in order to prevent this fear, a cover is provided to cover the lighting surface of the brake light, and when working on railroad rails, the operator manually covers the lighting surface with the cover and mistakes for a red signal. To prevent it.

[0004]

[Problems to be Solved by the Invention] However, when the work on the railroad rail is completed and the worker forgets to remove the cover when traveling on a public road, it is possible to make the following vehicle recognize the lighting of the brake light. It is not desirable for safety.

[0005] The present invention has been made in view of such a problem, and when a track-and-land work vehicle travels on railroad rails, the lighting of the brake light is not mistaken for a red light, and the lighting of the brake light is not mistaken. It is an object of the present invention to provide a brake light cover device for a track-and-rail working vehicle that can surely make another vehicle recognize the lighting of the brake light when traveling on the upper side.

[0006]

In order to achieve the above object, a safety device according to the present invention comprises a track running wheel overhang detecting means for detecting that a track running wheel is overhanging, and a brake light. And a drive unit for opening and closing the cover, and the controller controls the drive of the open / close drive unit.

[0007]

In such a safety device, when the track-and-land work vehicle overhangs the track running wheel to travel on the rail for rail, the track running wheel overhang detecting means detects the overhang of the track running wheel. Is detected, and the controller controls the opening / closing drive unit to position the cover of the brake light at the closed position. When the track running wheels are stored for running on the road, control is performed to position the brake light cover at the open position. This allows the following vehicle to recognize the lighting of the brake light on a public road without being mistaken as a red light even when the brake light is turned on when traveling on the railroad rail, so that the vehicle travels safely. be able to.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, a track-and-land work vehicle provided with a safety device according to the present invention will be described with reference to FIG.
This track-and-land work vehicle 30 is configured based on a truck traveling on a road. For this reason, tires (road running wheels) 32 are attached to the front, rear, left and right of the vehicle body 31, respectively. At the front of the vehicle body 31, a turntable 33 that can freely turn with respect to the vehicle body 31 is attached. An undulating and telescopic boom 34 is provided on the upper part of the swivel base 33.
, And a work table 35 is attached to the tip of the boom 34.

Iron wheels (track running wheels) 36 are attached to the front, rear, left and right of the vehicle body 31 so as to be extended (downward) and retractable by an iron wheel extension mechanism. As shown in FIG. 2, the iron ring overhanging mechanism includes a support 39 provided on the vehicle body 31.
And an iron ring holding member 37 provided at the lower end of the column 39 so as to be swingable by a pivot pin 39a, and a telescopic cylinder 40 for vertically rocking the iron ring holding member 37 by expansion and contraction operation. I have. In the iron wheel holding member 37,
An iron wheel 36 is rotatably attached by a pivot pin 37a, and an iron ring overhang detection switch (wheel detecting means for track running) 22 is attached to a lower portion of the column 39. A limit switch is used as the iron ring overhang detection switch 22, and the iron ring holding member 3 is operated by the extension operation of the telescopic cylinder 40.
When 7 is lowered, an ON signal (iron ring overhang signal) is transmitted when the rear end of the iron wheel holding member 37 and the actuator 22a of the iron ring overhang detection switch 22 come into contact with each other.

As shown in detail in FIG. 3, a rear combination lamp 11 including a direction indicator 11a, a tail light 11b, and a brake light 11c is disposed at a rear portion of the vehicle body 31. In FIG. Only the rear combination lamp 11 on the left side of the vehicle body 31 is shown, but it is similarly arranged on the right side of the vehicle body 31). Above the rear combination lamp 11, a rotatable pivot pin 20a is provided.
Are arranged to extend in the lateral direction. This pivot pin 20a
A cover 20 formed of an opaque plate material is attached to the cover 20. The cover 20 is rotatable in the vertical direction by the operation of a rotary solenoid (opening / closing drive unit) 21 provided on a side surface of the vehicle body 31. Here, cover 2
When 0 is rotated upward, the lighting surface of each lamp of the rear combination lamp 11 is exposed, and the lighting can be confirmed from outside. When the cover 20 is pivoted downward, the lighting surface of each lamp of the rear combination lamp 11 is covered with the cover 20, and the lighting cannot be confirmed from outside.

The track-and-rail aerial work vehicle 3 constructed as described above
0 is a railway rail (hereinafter simply referred to as a rail)
The vehicle travels on 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 lifted with respect to the vehicle body 31 as shown by a chain line in the figure. In this case, the iron ring overhang detection switch 2
Since 2 is in the off state, a controller (not shown) disposed on the vehicle body 31 controls the rotary solenoid 21 to drive the cover 20 to rotate upward. As a result, as shown in FIG.
Each of the lighting surfaces is exposed, and the following vehicle can be made to recognize the lighting of each lamp, so that it is possible to drive safely on a public road.

When the vehicle travels on a public road and arrives at 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 working vehicle 30
Center jack 3 attached to the lower center of body 31
8 is extended downward to lift its own vehicle body 31. The vehicle body 31 is centered on the center jack 38.
Is turned so as to be parallel to the rail R, and the iron wheel 36 is extended. Each iron wheel 36 is extended so as to be lowered as described above, and the iron wheel overhang detection switch 22 transmits an ON signal to the controller when the overhang is completed. The controller that has received the ON signal controls the rotary solenoid 21 to rotate the cover 20 downward. Thereby, the cover 20 rotates as shown by the arrow in FIG. 3, and can cover each lighting surface of the rear combination lamp 11.

After the iron wheels 36 are overhanged, the center jack 38 is contracted to put each iron wheel 36 on the rail R for railway. At this time, since each tire 32 also contacts the rail R, when the tire 32 is driven, the work vehicle 30 runs on the rail R. When the brake is depressed, the tire 32
Is stopped, and the work vehicle 30 stops. At this time,
Although the red brake light 11c is also turned on, the lighting surface is covered by the cover 20, so that even if the brake light 11c is turned on, the driver of another train does not mistakenly recognize a red signal. Also,
Even when a part of the lighting surface of the tail light 11b or the brake light 11c is formed of a red reflector, the reflector is covered by the cover 20, so that the light reflected when the brake light 11c is not turned on causes a red signal. There is no misunderstanding.

The aerial work vehicle 30 can travel on the rails and arrive at the work site, and the worker on the work table 35 can raise and lower the boom 34, extend and retract the boom 34, and operate the swivel table 33. Turning operation through the operation of
The work can be performed at an arbitrary height such as above the railway rail R.

In the above embodiment, the overhang of the iron ring is detected by the limit switch. However, the present invention is not limited to this, and the extension of the telescopic cylinder is detected by detecting the amount of extension of the telescopic cylinder. The overhang may be detected. In addition, when the lighting surface is opened and closed, the cover is rotated in the vertical direction by the rotary solenoid. However, the cover may be slid in the vertical or horizontal direction using a telescopic cylinder or the like.

[0016]

As described above, in the brake light cover device of the track-and-land work vehicle of the present invention, when the iron wheel is overhanging and traveling on the rail, the lighting surface of the brake light is covered with the cover by the open / close driving means. When the vehicle is running on a public road with the iron wheels stored, the cover is opened by the opening / closing drive means to expose the lighting surface of the brake light. As a result, even if the brake light is turned on when braking the vehicle body on the railway, it will not be mistaken as a red signal on the railway, and you will not forget to remove the brake light cover when traveling on public roads, You can run.

[Brief description of the drawings]

FIG. 1 is a side view of a track-and-land work vehicle provided with a brake light cover device according to the present invention.

FIG. 2 is a side view of an iron wheel portion of the track and land working vehicle.

FIG. 3 is a perspective view of the rear combination lamp section of the rail-mounted work vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Rear combination lamp 20 Cover 21 Rotary solenoid 22 Iron wheel overhang detection switch 30 Rail work for aerial work 34 Boom 36 Iron wheel R Railway rail

Claims (1)

(57) [Scope of request for utility model registration] 1. A vehicle body that can travel on a road, a track running wheel that is protruded from the vehicle body to run on a railroad rail, and that is provided so as to be retractable, and the track running wheel is protruded. Track running wheel overhang detecting means for detecting that the vehicle is running; a brake light that lights up when the vehicle body is being braked; a cover for covering at least a lighting surface of the brake light; Opening / closing drive means for moving between an open position for exposing the vehicle and a closed position for covering the lighting surface of the brake light, and the track running wheel overhang detecting means detects that the track running wheel is overhanging. And a controller for performing drive control of the opening / closing drive means for positioning the cover at the closed position in the event that the cover is in the closed position.