JPH10297232A - Safety device for track land vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device for a track land vehicle which can prevent running on a road while a wheel for track running is not stored. SOLUTION: When an off condition of a power take-off mechanism PTO is detected and it is detected that an iron wheel and a turntable are not stored based on the information from an iron wheel position detector 21 and a turntable position detector 22, an alarm means 23 lights a car body support device non-storage, alarm lamp in a display panel 26 to display an alarm for non- storage condition and sound an alarm buzzer 25. Since the power take-off mechanism is turned off when a vehicle runs on a road, it is possible to prevent its running on a road while the iron wheel and the turntable are not stored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a track-and-land vehicle capable of traveling on roads and tracks (railroad rails).

[0002]

2. Description of the Related Art A track-and-land vehicle is constructed on the basis of a truck, and has tire wheels (road running wheels) at four locations on the front, rear, left and right sides of a vehicle body. Further, iron wheels (track running wheels) are attached to four places on the front, rear, left and right sides of the vehicle body so as to be able to protrude downward and retract upward. On the vehicle body, a working device such as a working device at a high place is provided. In general, this type of land vehicle has a turntable for moving the vehicle on a rail (track) in the lower center of the vehicle body. The turntable is attached so as to be capable of extending downward and retracting upward, and is configured to extend downward to support and turn the vehicle body.

[0003] The orbital vehicle constructed as described above is, for example,
It is used to perform work such as construction and inspection of railway equipment such as trolley wires on rails. When performing this work, first drive tire wheels, travel on the road, and move to near the work site. Then, when arriving at a railroad crossing near the work site, stop the vehicle so as to cross the rail, support and turn the vehicle body with the turning platform, and position the iron wheel on the rail,
An iron wheel is overhanging, thereby supporting the vehicle body on the rail. After that, the turntable is stored, travels on the rails, moves to the work site, and construction and inspection are performed by the high-altitude work device mounted on the vehicle body.

[0004] In some railway vehicles, the output of the engine is taken out by a power take-off mechanism to drive a hydraulic pump, a hydraulic motor is operated by hydraulic oil supplied from the hydraulic pump, and an iron wheel is driven by the hydraulic motor. Some are configured to run on their own. In addition, in the case of this type of track-and-land vehicle, the overhang / retraction state of the iron wheel and the turntable is displayed on the display panel in conjunction with the power take-off mechanism being turned on, and the overhang / retraction of the iron wheel and the turntable during rail running. You can check the status.

[0005]

However, in such a track-and-land vehicle, the power take-off mechanism is turned off when the vehicle is traveling on the road. Can not do it. For this reason, even if the iron wheel and the turntable come down from the stowed position while driving on the road, the driver travels unaware of this, and the iron wheel or the turntable comes into contact with the ground to damage these related devices. There is a problem that there is.

[0006] The present invention has been made in view of such a problem, and road running is performed with the track running wheels (including the turntable in the case of a track-and-land vehicle having a turntable) unstowed. It is an object of the present invention to provide a safety device for a track-and-land vehicle that can prevent the occurrence of the accident.

[0007]

In order to achieve the above object, a safety device according to the present invention comprises a road running wheel, a track running wheel, and a turntable, and the track running wheel is used when running on a road. It is used for a track-and-land vehicle that is stored and travels using the road running wheels, and is used to run while running on the track while extending the track running wheels on the track, and whether or not the track running wheels are stored. , A track wheel storage state detector that detects whether the vehicle is stored in the storage position, a turntable storage state detector that detects whether the turntable is stored in the storage position, and a traveling state detector that detects whether the vehicle is traveling on the road or on the track. In the state where it is detected that the vehicle is traveling on the road by the traveling state detector, the track traveling wheel is detected as being in the non-retracted state, or the turntable is detected as being in the non-retracted state. Alarm hand An alarm activated by.

[0008] According to such a configuration, when the track traveling wheel (iron wheel) or the turntable falls down from the storage position during traveling on the road, or when the vehicle travels on the road without these retracted. In this case, since the alarm operation is performed by the alarm means, it is possible to reliably prevent the traveling of the vehicle in the unstored state and the damage of the related devices. In addition,
The alarm operation includes not only an alarm operation using an alarm buzzer and an alarm lamp, but also an alarm operation for regulating road driving.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 3, the track-and-land vehicle 1 provided with the safety device of the present invention is configured based on a truck, and has tire wheels (road running wheels) 3 attached to four front, rear, left, and right sides of a vehicle body 2. Can drive on the road. Further, iron wheels (track running wheels) 4 are rotatably attached to iron wheel support members 4a which are swingably supported by the vehicle body 2 at four positions in front, rear, left and right of the vehicle body 2.

The iron wheel supporting member 4a is oscillated by the expansion and contraction of the hydraulic cylinder 5 for retracting and storing the iron wheel. By oscillating the iron wheel supporting member 4a, the iron wheel 4 is extended downward or upward. And can be stored. The pitch between the left and right iron wheels 4 in each of the front and rear can be changed according to the width of the rail (track) R for railway. The track-and-land vehicle 1 places the vehicle body 2 on the rail R with the iron wheel 4 overhanging,
The iron wheel 4 is driven by a hydraulic motor (hydraulic motor) for driving the iron wheel (not shown) so that it can run on the rail R by itself.

Instead of driving by the hydraulic motor, the iron wheel 4 is made freely rotatable, and the tire rear wheel 3 is driven in contact with the rail R to obtain a driving force for driving. You may do so.

In the center of the lower part of the vehicle body 2, a turntable 6 for mounting the track-and-land vehicle 1 on the rail R for moving is mounted. The turning stand 6 is a hydraulic cylinder 7 for storing the turning stand overhang.
Can be extended downward or retracted upward by the expansion / contraction operation, and the vehicle body 2 can be horizontally turned with respect to the turntable 6 by the vehicle body turning hydraulic motor 8.

An aerial work apparatus 10 is provided on the vehicle body 2. The high-altitude working device 10 is provided with a swivel 11 that is attached to the vehicle body 2 so as to be capable of horizontal swiveling, and a boom 12 that is attached to the upper part of the swivel 11 so as to be able to move up and down so as to be telescopic. And a workbench 13 for mounting a worker attached to the tip of the boom 12.

In the vehicle body 2, there is provided a power take-off mechanism PTO for extracting an output of an engine (not shown), which is a driving source of the tire wheels 3 when the vehicle is running, and driving a hydraulic pump (not shown). I have. Actuators such as an iron wheel overhang storage hydraulic cylinder 5, an iron wheel drive hydraulic motor, a turntable overhang storage hydraulic cylinder 7, and a body turning hydraulic motor 8 are driven by hydraulic pressure of a hydraulic pump driven by the power take-off mechanism PTO. It is supposed to work.

When performing construction or inspection of railway facilities such as a tension line and a trolley line on the rail R by the rail-car 1 having the above-described configuration, the engine is first turned on by turning on the engine key switch SW. The tire wheels 3 are driven to travel and move on the road to near the work site. During traveling on such a road, the iron wheel 4 and the turntable 6 are pulled up and located at the storage position.

When the vehicle arrives at a railroad crossing near the work site, the vehicle stops across the rail R, the power take-off mechanism PTO is turned on, the hydraulic pump is operated, and the turntable 6 is extended to operate the vehicle body 2. To support.
Then, the vehicle body turning hydraulic motor 8 is driven to horizontally turn the vehicle body 2 with respect to the turntable 6, and the iron wheel 4 is positioned on the rail R. Here, when the pitch of the left and right iron wheels 4, 4 is different from the width of the rail R, the pitch of the left and right iron wheels 4, 4 is fixed according to the width of the rail R. Then, the iron wheel 4 is extended and the turntable 6 is retracted and the iron wheel 4 is placed on the rail R.

Next, the iron wheel 4 is rotationally driven by the iron wheel driving motor to travel on the rail R and move to the destination.
When the vehicle arrives at the destination, the vehicle is stopped,
At 0, the workbench 13 is moved to a desired height by performing operations such as turning, raising, lowering, and expanding and contracting the boom 12, and a worker (not shown) boarding the workbench 13 allows the work line (not shown) to The construction of railway facilities such as trolley lines is performed.

When the work is completed, the vehicle travels on the rail R and moves up to the railroad crossing, retracts the iron wheel 4 and supports and turns the vehicle body by the turntable 6. Then, after the turntable 6 is retracted, the power take-off mechanism PTO is turned off, and the tire wheels 3 are driven to travel on the road and move to another place.

When traveling on a road with the above-mentioned rail-land vehicle 1, the iron wheel 4 and the turntable 6 are stored.
The safety device according to the present invention is provided so that the vehicle does not travel on the road with these components not stored.

FIG. 1 shows the configuration of this safety device.
It has an iron wheel position detector (track-wheel storage state detector) 21 for detecting the overhang position of the iron wheel 4, and information detected by this is input to the alarm controller 23.
A turntable position detector (turntable storage state detector) 22 for detecting the overhang position of the turntable 6 is also provided, and information detected by the turntable is also input to the alarm controller 23. The alarm controller 23 is also adapted to input ON / OFF information of the engine key switch SW1, the power take-off mechanism PTO, and the iron wheel storage switch SW2.
When W1 is turned on, it is activated (monitored).

When the safety device is activated, the alarm controller 23 turns on / off the power take-off mechanism PTO.
Regardless of the off state, the overhanging / retracted state of the iron wheel 4 and the turntable 6 is displayed by the stored state display lamp 24b on the display panel 24 shown in FIG. This allows
During traveling on a road and traveling on a rail, the overhanging / retracted state of the iron wheel 4 and the turntable 6 can be confirmed.

Furthermore, in this safety device, when traveling on a road, the iron wheels 4 and 4 are used based on information from the two detectors 21 and 22.
When it is detected that at least one of the turntables 6 is not in the retracted state, an alarm operation by the alarm controller 23 is performed. This alarm is activated
On the display panel 24, a warning lamp 24a for not storing the vehicle body support device is turned on to display an alarm indicating that the vehicle is not stored, and an alarm buzzer 25 sounds. At this time, iron wheel 4,
Which of the turntables 6 is not stored can be confirmed by the display of the storage state display lamp 24b. Further, the alarm controller 23 also activates the travel restriction device 26 so that the vehicle cannot travel on the road in this state.

By such an alarm operation, it is possible to prevent the running of the iron wheel 4 and the turning table 6 from being stowed without storing the iron wheel 4 and the turning table 6 for some reason during running. It is possible to prevent the vehicle from continuing to run when the vehicle descends, and it is excellent in safety.

Since such an alarm operation is not required during track running, the safety device determines whether the vehicle is running on a road or not.
It is necessary to determine whether the vehicle is in the orbital running state, and therefore, the state is determined based on whether the power take-off mechanism PTO is operating. That is, if the mechanism PTO is on, it is determined that the track is running, and if it is off, it is determined that it is running on the road. Further, instead of this judgment, the iron wheel storage switch SW
It may be configured to determine which state is based on the operation of (2).

When the pitch between the left and right iron wheels 4, 4 is not fixed, the display panel 24 also turns on a gauge fixing warning lamp 24c to display this warning.

[0026]

As described above, in the track-and-land vehicle safety device according to the present invention, in the state where it is detected that the vehicle is traveling on the road, it is determined whether or not the track-driving wheel is detected as being in the non-retracted state. When the turntable is detected as being in the non-stored state, an alarm is activated by the alarm means, so that the track running wheel (iron wheel) or the turntable falls downward from the stowed position during traveling on the road. Also, if the vehicle is to be driven on a road with these items not stored, the warning means (warning lamp, buzzer, or warning that regulates driving) will be issued, so that the iron wheels or the turntable are not stored. It is possible to reliably prevent the related devices from being damaged while traveling in the state.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a safety device for a track-and-land vehicle according to the present invention.

FIG. 2 is a diagram illustrating a configuration of a display panel.

FIG. 3 is a side view showing a configuration of a railroad vehicle equipped with the safety device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 track-and-land vehicle 3 tire wheel (road running wheel) 4 iron wheel (track running wheel) 21 iron wheel position detector (storage state detector) 22 turntable position detector (storage state detector) 23 alarm means 24a body support device Not stored warning lamp 25 Alarm buzzer PTO Power take-off mechanism R rail (track)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsutomu Takeda 414-1 Higashimine Sugawa, Shinji-mura, Tone-gun, Gunma Prefecture Aichi Corporation Shinji Works (72) Inventor Makatsu Maeda, Shinji-mura, Tone-gun, Gunma Prefecture 414-1 Aichi Corporation Shinji Works

Claims (1)

[Claims] 1. A road traveling wheel, a track traveling wheel,
A turntable that projects downward from a storage position stored in the vehicle body, lifts and supports the vehicle body, and allows the vehicle body to turn horizontally in this state; A safety device for a track-and-land vehicle configured to run using running wheels and to run while running on a track while projecting the track running wheels on a track, wherein the track running wheels are stored. A track storage state detector for detecting whether or not the turntable is stored in the storage position; a turntable storage state detector for detecting whether or not the turntable is stored in the storage position; A state detector, and in a state where the traveling state detector detects that the vehicle is traveling on a road, the track traveling wheel is in an unstored state by the track wheel storage state detector. Alarm means for activating an alarm when the turntable storage state detector detects that the turntable is not stored. Car safety equipment.