JP3629706B2 - Railroad vehicle safety equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety device for a land-rail vehicle capable of traveling on both a track and a road.
[0002]
[Prior art]
The track-and-rail vehicle is configured based on a truck, and has tire wheels (road driving wheels) at four positions on the front, rear, left and right sides of the vehicle body. Further, iron wheels (orbital running wheels) are attached freely at four locations on the front, rear, left, and right sides of the vehicle body so as to freely project downward and retract upward. On the vehicle body, for example, a working device such as an aerial work device is provided.
In general, this type of track-and-rail vehicle is provided with a turntable for moving the vehicle on the track in the lower center of the vehicle body. The turntable is mounted so as to be freely extended downward and retracted upward, and is configured to extend downward to support and turn the vehicle body.
[0003]
The track-and-rail vehicle configured in this way is used, for example, to perform work such as construction and inspection of railway facilities such as a trolley line on the track. Travel over and move close to the work site. Then, when arriving at the railroad crossing near the work site, the vehicle is stopped so as to cross the rail, and the vehicle body is supported and turned by the turntable, the iron wheel is positioned on the rail, and the iron wheel is overhanged. Support. After that, the turntable is stored, travels on the track, moves to the work site, and is constructed and inspected by an aerial work device attached on the vehicle body.
[0004]
By the way, depending on the track-and-rail vehicle, when driving on the track, the steel wheel may come into contact with the tire wheel to improve the stability of the vehicle at the same time as the steel wheel is overhanging, and when passing the railroad crossing or point. In order to prevent derailment from the rail, there is one that employs an axle fixing means for fixing the axle of the tire wheel.
[0005]
[Problems to be solved by the invention]
However, in such a track-and-rail vehicle, if the vehicle is accidentally driven on the road while the axle is fixed by the axle fixing means, not only is the ride comfortable, but the vehicle may be damaged particularly when the vehicle is driven on a road with large unevenness. is there.
On the other hand, if the track is run without the axle fixed by the axle fixing means, the road running wheels may be grounded, thereby deteriorating the stability of the vehicle, and the iron wheels may be derailed from the rails. .
[0006]
The present invention has been made in view of such a problem, and prevents the vehicle from traveling on a road while the axle is fixed by the axle fixing means, and the track traveling without fixing the axle by the axle fixing means. An object of the present invention is to provide a safety device for a track-and-rail vehicle that can prevent the vehicle from performing.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the safety device of the present invention includes a track traveling wheel and a road traveling wheel, and when the track travels, the axle of the road traveling wheel is fixed by an axle fixing means, and the track traveling is performed. Used for a track-and-rail vehicle that travels with its wheels overhanging on a track, and detects whether or not the axle of the road-traveling wheel is fixed by the axle-fixing means; When the vehicle is detected to be fixed by the axle fixing means, the road driving restriction means for restricting or driving the road is performed, and thereby the road is driven with the axle fixed. Can be prevented.
[0008]
Similarly, in the safety device of the present invention, a detector for detecting whether or not the axle of the track running wheel is fixed by the axle fixing means, and the axle of the road running wheel is fixed by the detector. When it is detected that the vehicle is not fixed by the means, it is possible to prevent the vehicle from running on the track without fixing the axle by configuring the track running with the track running restricting means for regulating or warning the track. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 3, the track-and-rail vehicle 1 equipped with the safety device of the present invention is configured with a truck as a base, and tire wheels (road driving wheels) 3 attached at four locations on the front, rear, left and right of the vehicle body 2. Can drive on the road. Furthermore, at four locations on the front, rear, left and right of the vehicle body 2, iron wheels (orbital traveling wheels) 4 are rotatably attached to iron wheel support members 4 a that are swingably supported by the vehicle body 2.
[0010]
The iron ring support member 4a is oscillated by the expansion / contraction operation of the iron cylinder overhanging storage hydraulic cylinder 5. By oscillating the iron ring support member 4a, the iron ring 4 is extended downward or upward. It can be stored. The track-and-rail vehicle 1 is configured such that the vehicle body 2 is placed on the track R with the iron wheel 4 overhanging, and the iron wheel 4 is driven by the iron wheel driving hydraulic motor (not shown) so as to be able to travel on the track R. It has become.
[0011]
At the center of the lower part of the vehicle body 2, a turntable 6 for attaching and moving the rail vehicle 1 onto the track R is attached. The turntable 6 can be extended downward or stored upward with respect to the vehicle body 2 by the expansion / contraction operation of the hydraulic cylinder 7 for extending the turntable storage, and further a hydraulic motor for turning the vehicle (not shown). Thus, the vehicle body 2 can be turned horizontally with respect to the turntable 6.
[0012]
An aerial work apparatus 10 is provided on the vehicle body 2. The aerial work device 10 includes a swivel base 11 that is pivotably attached to the vehicle body 2, a boom 12 that is attached to an upper part of the swivel base 11 so that it can be raised and lowered, and is telescopically telescopic. , And an operator boarding work table 13 attached to the tip of the boom 12.
[0013]
On the other hand, as shown in FIG. 4, the truck normally attaches the axle 8 of the tire wheel 3 to the vehicle body 2 via a spring 9 in order to absorb vibrations due to road irregularities during traveling. For this reason, the track-and-rail vehicle 1 based on such a track is in a state in which the tire wheel 3 is grounded even if the iron wheel 4 is extended to travel on the track R due to the weight of the tire wheel 3 and the axle 8 being lowered. As a result, there is a risk that the stability during track running may be lost, or the iron wheel 4 may be disconnected from the rail when passing through a crossing or point.
Therefore, axle fixing means 21 for fixing the axle 8 to the vehicle body 2 is provided so that the tire wheel 3 does not get on and off. For example, as described in Japanese Utility Model Publication No. 57-2165, one end is pivotally supported on the vehicle body 2 on the engagement shaft 15 provided on the bearing portion 14 of the axle 8 and is swung by the cylinder 16 or the like. The axle 8 can be fixed to the vehicle body 2 by inserting the tapered locking body 17 that can be used. Then, the axle 8 is fixed and released by the operator operating the cylinder 16 as necessary.
[0014]
When the railway vehicle 1 constructed in this way is used for construction and inspection of railway facilities such as a stretched line and a trolley line on the track R, the tire wheel 3 is driven to travel near the work site on the road. Moving.
During such road travel, the axle 8 of the tire wheel 3 is not fixed by the axle fixing means 21.
[0015]
When arriving on the railroad crossing near the work site, the vehicle stops so as to cross the track R, and the turntable 6 is extended to operate, thereby supporting the vehicle body 2. Then, a vehicle body turning hydraulic motor (not shown) is driven to horizontally turn the vehicle body 2 with respect to the turntable 6 so that the iron wheel 4 is positioned on the track R. Then, the iron wheel 4 is operated to extend, and the turntable 6 is retracted to place the iron wheel 4 on the track R. Further, the axle 8 of the tire wheel 3 is fixed by the axle fixing means 21.
[0016]
Next, the iron wheel 4 is rotationally driven by an iron wheel driving motor (not shown), travels on the track R, and moves to the destination. When the vehicle arrives at the destination, the vehicle is stopped, and the work platform 13 is moved to a desired height by performing operations such as turning, undulating, and expanding / contracting the boom 12 in the work platform 10, and the work vehicle boarded on the work platform 13. (Not shown) causes the construction of railway facilities such as a stretched line and a trolley line on the rail vehicle 1 to be performed.
[0017]
When the work is finished, the vehicle travels on the track R and moves up to the level crossing, and the iron wheel 4 is retracted to support and turn the vehicle body 2 by the turntable 6. Then, the axle fixing means 21 is operated to release the fixation of the axle 8 of the tire wheel 3, and after the turntable 6 is retracted, the tire wheel 3 travels on the road and moves to another place.
[0018]
When traveling on a road with the above-described track-and-rail vehicle 1, the axle 8 of the tire wheel 3 is not fixed by the axle fixing means 21, and when traveling on the track, the axle 8 is driven by the axle fixing means 21. The safety device according to the present invention is provided so that road travel is not performed when the axle 8 is fixed and track travel is not performed when the axle 8 is not fixed. It has been.
[0019]
The configuration of this safety device is shown in FIG.
First, it has the detector 18 which detects whether the axle shaft 8 of the tire wheel 3 is being fixed to the vehicle body 2 by the axle shaft fixing means 21, for example, this detector 18 is shown in FIG. As shown in FIG. 4, the limit switch 18 detects the operating position of the locking body 17 of the fixing device for the axle 8. When the locking body 17 is moved by the cylinder 16 to fix the axle 8, the limit switch 18 A signal that the contact is opened and closed and the axle 8 is fixed is transmitted. In addition to this, the detector 18 uses a proximity switch instead of the limit switch 18 or determines whether the cylinder 16 of the axle fixing means 21 is in a state of fixing the axle 8, that is, in an extended state. It is good also as an extension sensor to detect.
Further, road travel regulation means 19 is provided. When the road travel regulation means 19 receives a signal from the detector 18 that the axle 8 is fixed, it regulates road travel. This is because, for example, the transmission of the vehicle body 2 cannot be moved to the traveling position, the vehicle 2 is driven on the road, the transmission is moved to the traveling position, the parking brake is released, or the engine is stopped when the PTO is turned off. Just do it.
Further, instead of restricting direct travel, an alarm may be activated when the transmission is set to the travel position for road travel, the parking brake is released, or the PTO is turned off.
[0020]
As a result, when the detector 18 detects that the axle 8 is fixed by the axle fixing means 21, the road travel restricting means 19 is actuated by a signal from the detector 18, and the vehicle travels on the road. Road regulation can be prevented or a road warning can be prevented by sounding an alarm when the driver tries to travel on the road.
[0021]
Further, as shown in FIG. 2, when the safety device of the tracked vehicle 1 is constituted by the detector 18 and the track travel restricting means 20, the detector 18 detects that the axle 8 is not fixed by the axle fixing means 21, A signal is sent to the track travel regulation means 20. The track travel restricting means 20 receives a signal from the detector 18 that the axle 8 is not fixed by the axle fixing means 21 (unless it receives a signal that the axle 8 is fixed by the axle fixing means 21). Regulate track travel. This is because, for example, the operation signal for performing track travel is blocked by a relay or the like, or the piping to the drive motor for the iron wheel 4 for track travel is blocked by a hydraulic valve so that the pressure is applied to the drive motor. Do not supply oil.
Further, an alarm may be sounded when a traveling operation is performed so as to travel on the track.
[0022]
As a result, when the detector 18 detects that the axle 8 is not fixed by the axle fixing means 21, the trajectory travel restricting means 20 is actuated by a signal from the detector 18, and the vehicle travels on the track. It is possible to prevent orbiting by regulating or sounding an alarm when the driver tries to orbit.
[0023]
【The invention's effect】
As described above, in the safety device for a tracked vehicle according to the present invention, in a state where the axle of the road traveling wheel is fixed by the axle fixing means, the road traveling can be prevented by regulation or warning, In the state where the axle is not fixed by the axle fixing means, the track traveling can be prevented by regulation or warning, so that the riding comfort is poor by performing road driving while the axle is fixed by the axle fixing means. Or running on uneven surfaces can prevent the vehicle from coming into contact with the road surface and damaging the vehicle, and by running on the track without the axle fixed by the axle fixing means, the vehicle can be stabilized. Prevent the steel wheels from derailing from the rails due to the contact of the tire wheels when the vehicle passes a railroad crossing or point. It can be.
[0024]
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a safety device for a track-and-rail vehicle according to the present invention.
FIG. 2 is a block diagram showing a configuration of a safety device for a railroad vehicle according to the present invention.
FIG. 3 is a side view showing a configuration of a track-rail vehicle including the safety device of the present invention.
FIG. 4 is a view showing an axle fixing means portion of a track-rail vehicle provided with the safety device of the present invention.
[Explanation of symbols]
1 Railroad vehicle 3 Road wheels (tire wheels)
4 Wheels for rail travel (steel wheels)
8 axle 18 detector (limit switch)
19 Road running regulation means 20 Track running regulation means 21 Axle fixing means

Claims (2)

The vehicle has a track traveling wheel and a road travel wheel, and stores the track travel wheel when traveling on the road and travels using the road travel wheel. During the track travel, the axle of the road travel wheel is adjusted by an axle fixing means. In the safety device of a track-and-rail vehicle that travels with the wheels for running on the track overhanging on the track,
A detector for detecting whether or not the axle of the road running wheel is fixed by the axle fixing means;
When the detector detects that the axle of the road driving wheel is fixed by the axle fixing means, the road driving restriction means is configured to restrict road driving or perform an alarm operation. Railroad vehicle safety device. The vehicle has a track traveling wheel and a road travel wheel, and stores the track travel wheel when traveling on the road and travels using the road travel wheel. During the track travel, the axle of the road travel wheel is adjusted by an axle fixing means. In the safety device of a track-and-rail vehicle that travels with the wheels for running on the track overhanging on the track,
A detector for detecting whether or not the axle of the road running wheel is fixed by the axle fixing means;
When the detector detects that the axle of the road running wheel is not fixed by the axle fixing means, it is constituted by a track running regulating means for regulating or warning the track running. Railroad vehicle safety device.

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