JP2673214B2 - Train line inspection vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a train line inspection vehicle.

[0002]

2. Description of the Related Art Conventionally, as a train line inspection vehicle 1 of this type, for example, a railroad vehicle as shown in FIG. 5 has been used. This has a structure capable of traveling not only on the track 2 but also on the road, and is generally an improved truck. For example, in the vicinity of the tire 3 for road driving, the track 2
The iron wheel 4 for traveling around is rotatably arranged,
A rotary jack portion 5 for changing the direction of the vehicle on the track 2 is provided on the lower surface of the substantially central portion of the vehicle body, and a work platform 8 which is moved in parallel in the vertical direction by an arm mechanism 7 is provided on a loading platform 6 at the rear of the truck. The structure is such that various inspection devices 9 and 10 are mounted on the workbench 8. Also, the workbench 8
A pantograph 12 for detecting the altitude of the electric line 11 is provided at the front end of the vehicle, which is also used for grounding to ground the track 2 in order to ensure safety during work.

By the way, as the inspection devices 9 and 10 mounted on the workbench 8, for example, a percussion device for inspecting the looseness of the hanger 15 that suspends the train wire 11 or a pantograph for collecting electricity on the train is used. A wear inspection device or the like for inspecting the reduction degree of the train line 11 to be shaved is inspected while the detection units 9a and 10a of each of these inspection devices 9 and 10 are in contact with the train line 11, and thus are appropriate. Contact position is required.

[0004]

However, the distance between the track 2 and the trolley line 11 may vary greatly depending on the section, and also varies within the same section. The inspection devices 9 and 10 are provided with upward biasing means, and have a structure capable of following a slight change in distance. However, when the distance is greatly changed, it cannot be followed only by the urging means of the inspection devices 9 and 10. Therefore, in the conventional case, the operator on the workbench 8 can visually check and check the hydraulic pressure. It has been necessary to operate the manual valve of the cylinder to move the arm mechanism 7 up and down to adjust the workbench 8 to a height that is convenient for inspection and measurement.

Therefore, the present invention pays attention to the fact that a pantograph mounted on this type of inspection vehicle expands and contracts in response to a large change in the distance between the track and the train line, and a simple pantograph using this pantograph is used. It is an object of the present invention to enable the work table to be automatically moved up and down by means to eliminate the inconvenience caused by manual operation.

[0006]

Means for Solving the Problems That is, an electric line inspection vehicle according to the present invention is provided with a work table for inspecting an electric line on an upper part of a vehicle body, an inspection device on the work table, and an electric line for a track. In a train line inspection vehicle including a pantograph that elastically expands and contracts in the vertical direction and comes into contact with a train line as the height position of the pantograph expands and contracts in the vertical direction. And a drive means for moving up and down the work table based on the displacement amount obtained from the detection means.

[0007]

According to the above-mentioned means, when the pantograph expands and the distance between the workbench and the train line increases, the detecting means detects the upward displacement amount of the pantograph, and based on the detected amount. The drive means is operated to automatically raise the workbench by a predetermined distance to set the distance between the workbench and the trolley line to a predetermined value. On the other hand, when the pantograph shrinks and the distance between the workbench and the trolley wire becomes smaller, the detection means detects the downward displacement of the pantograph, and contrary to the above, the workbench is automatically moved by a predetermined distance. It is lowered to bring the distance between the workbench and the train line to a predetermined value.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a train line inspection vehicle according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows an entire train line inspection vehicle 19 according to the present invention. In addition to equipping the work table 8 with the inspection devices 9 and 10, the work table 8 is entirely covered with a cover 13. . This cover 13 has a canopy 14 that can be opened and closed, and
When the vehicle is to be inspected, the vehicle travels on the track 2 with the canopy 14 opened and the workbench 8 raised, but when traveling on a general road, the workbench 8 is lowered and the canopy 14 is closed. can do.

FIG. 2 shows a pantograph 12 mounted on a train line inspection vehicle 19 of the present invention and a detection means 20 for detecting the height displacement of the pantograph 12. The pantograph 12 is a bending type in which two arms 21 and 22 are connected to each other by a hinge portion 23, which is provided on the front surface of the workbench 8 as in the conventional example. Is provided with a pan shoe 24, and a stay 26 having a spring 25 is provided at the base end of the lower arm 22. In the pantograph 12 having such a configuration, the spring 25 works in response to the change in the height position of the train line 11, and the upper and lower arms 21 and 22 elastically expand and contract around the hinge portion 23. The bending angle changes, and the pan shoe 24 always
Contacts the train line 11 while being urged upward. In the present invention, the displacement amount when the height position of the pan shoe 24 changes is detected by the detection means 20 attached to the stay 26 of the pantograph 12.

The detecting means 20 in this embodiment is intended to detect the displacement amount by replacing it with the change in the resistance value of the potentiometer 27, and as shown in FIG. 2, the potentiometer 27 and the detection thereof. It is composed of a spool 29 fixed to the shaft 28 and a winding spring 30. A wire 31 having one end fixed to the upper arm 21 of the pantograph 12 is wound around the spool 29. When the pantograph 12 extends, the wire 31 is pulled out from the spool 29, while when the pantograph 12 contracts, the above-described winding spring is wound. 25 return to spool 29
Rotates in the opposite direction and winds in the loosened wire 31.
In this way, when the wire 31 is pulled out and wound up, the detection shaft 28 also rotates together with the spool 29, so that the potentiometer 27 detects the change in the resistance value due to the rotation.

FIG. 3 shows an embodiment of control means for automatically controlling the up-and-down movement of the workbench 8 based on the displacement amount of the pantograph 12 detected by the detection means 20. This control means is the detection means 2 described above.
0, a comparison amplifier 36 for comparing the command voltage obtained by the detection means 20 with the reference voltage from the reference voltage setting circuit 35, and a drive means for moving up and down the workbench 8 by a servo signal from the comparison amplifier 36. And 37. In comparison between the command voltage and the reference voltage, when the pantograph 12 holds a constant bent shape, the output voltage from the potentiometer 27 and the reference voltage are kept in equilibrium, and the bent shape changes to cause the pan shoe 24 to move. When the height position changes, the balance between the output voltage and the reference voltage is lost, and the servo signal is output to the drive unit 37.

The drive means 37 includes a hydraulic pump 38,
It is composed of an electromagnetic switching valve 39, a hydraulic cylinder 40, and a hydraulic pipe 41 connecting them. The comparison amplifier 3
A manual circuit 42 is connected to the wiring connecting between 6 and the electromagnetic switching valve 39 so that the workbench 8 can be manually moved up and down.

Next, the elevation control of the workbench 8 will be described. First, the tramline 11 goes up and the pantograph 1
2 extends and the pan shoe 24 is displaced upward from the reference position shown by the solid line in FIG. 2 to the position shown by the dotted line,
Along with this, the wire 31 is pulled out from the spool 29, and the detection shaft 28 rotates correspondingly, so that the resistance value of the potentiometer 27 changes and the command voltage from the detection means 20 also changes. Therefore, this command voltage enters the comparison amplifier 36 and is compared with the reference voltage and then output as a servo signal. As a result, the electromagnetic switching valve 39 is excited in the direction of arrow A in FIG. 3 to switch to the valve chamber 39a.
Then, the oil is supplied to the lower chamber 40a of the hydraulic cylinder 40 to automatically push up the workbench 8. When the workbench 8 rises, the pantograph 12 gradually increases in bending degree, but with this, the spool 29 rotates in the opposite direction and winds the loose wire 31, so that the command voltage of the potentiometer 27 also gradually approaches the reference voltage. Go. Then, when the displacement amount in the height direction of the pantograph 12 approaches the set value and the pantograph 12 returns to the original bent shape, the potentiometer 2
Since the command voltage of 7 also becomes in equilibrium with the reference voltage, the electromagnetic switching valve 39 returns to its original state and is held. In this way,
Since the workbench 8 is held in a state where the distance between the workbench 8 and the train line 11 is restored, the inspection devices 9 and 10 can continue the inspection with almost no vertical fluctuation.

On the other hand, when the height of the trolley wire 11 is lowered with respect to the track 2, the pantograph 12 is bent and the pan shoe 24 is lowered to the position shown by the alternate long and short dash line in FIG. Since the slack occurs, the winding spring 30 works to rotate the detection shaft 28, and the resistance value of the potentiometer 27 changes as the wire 31 is wound by the spool 29. Then, the command voltage from the detector 20 is compared with the reference voltage in the comparison amplifier 36 to output a servo signal, and the electromagnetic switching valve 39 is moved to the arrow B opposite to the above.
To switch to the valve chamber 39b by exciting in the direction
Oil is supplied to the upper chamber 40b of 0. As a result, the workbench 8 is automatically lowered this time. Since the pantograph 12 gradually expands when the workbench 8 descends, the wire 31 is pulled out from the spool 29, and the command voltage of the potentiometer 27 also gradually approaches the reference voltage. Then, when the displacement amount in the height direction of the pantograph 12 becomes equal to or less than the set value,
Since the command voltage of the potentiometer 27 is also in equilibrium with the reference voltage, the electromagnetic switching valve 39 returns to its original state. Therefore, even in this case, the distance between the workbench 8 and the train line 11 can be kept constant.

FIG. 4 shows another embodiment of the elevation control means, in which a rotary encoder 45 is used as a detection means instead of the potentiometer 27 described above. In this case, a rod 46 is used instead of the wire 31, one end of which is fixed to the upper arm 21 of the pantograph 12, and the other end is transmitted to the rotation of the rotary encoder 45 by, for example, a rack and pinion. As a result, the expansion and contraction of the pantograph 12 causes the rod 46 to move up and down, and the displacement amount is converted into the rotation amount of the rotary encoder 45 to output a pulse, which is processed by the output amplifier 47 or the like.
The electromagnetic switching valve 39 can be switched between right and left. Therefore, also in this case, the lifting / lowering control of the workbench 8 can be performed as described above.

In the above embodiment, the potentiometer 27 and the rotary encoder 45 are used as the detecting means, but in the present invention, the pantograph 12 is used.
It is also possible to control using other detection means that can detect the amount of displacement of the height position of the. Further, in the present invention, the mounting position of the wire 31 or the rod 46 fixed to the upper arm 21 of the pantograph 12 is not limited to that of the above-described embodiment, and the wire 31 or the rod 46 may be mounted in the vicinity of the pan shoe 24 or the lower arm 22. Further, in the above-described embodiment, the displacement of the panche 24 of the pantograph 12 at the height position is detected, but it is also possible to detect the displacement in the height direction based on the change in the bending angle of the hinge portion 23.

In the above-mentioned example, the inspection vehicle equipped with the hitting inspection device and the wear inspection device as the inspection devices 9 and 10 has been described, but it goes without saying that the present invention can be applied to an inspection vehicle loaded with other inspection devices. That is, it can also be applied to a work vehicle in which a worker rides on the workbench 8 to perform maintenance / inspection of the electric line 11, etc. Further, it goes without saying that the shape of the pantograph 12 is not limited to the bent type.

[0018]

As described above, according to the electric line inspection vehicle of the present invention, when the pantograph expands and contracts according to the change in the distance between the track and the electric line, the displacement in the height direction thereof. Is detected and the workbench can be automatically moved up and down in response to this, so that the visual manual operation by the worker as in the conventional inspection is eliminated. Also,
Since a constant distance is always maintained between the workbench and the train line, the inspection device has an effect of maintaining an appropriate contact pressure with respect to the train line.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle showing an embodiment of an electric line inspection vehicle according to the present invention.

FIG. 2 is an explanatory view showing an embodiment of a detecting means of an electric line inspection vehicle according to the present invention.

FIG. 3 is an explanatory view showing a lifting / lowering control means for a workbench using the detection means.

FIG. 4 is an explanatory view showing another embodiment of the detecting means of the train line inspection vehicle according to the present invention.

FIG. 5 is a side view of a vehicle showing an example of a conventional electric line inspection vehicle.

[Explanation of symbols]

 8 Workbench 9 Inspection device 10 Inspection device 11 Train line 12 Pantograph 19 Train line inspection vehicle 20 Detecting means 27 Potentiometer (detecting means) 37 Driving means 45 Rotary encoder (detecting means)

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masanori Nagashima 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Within East Japan Railway Company (72) Inventor Tsuru Kashima 2-2 110, Nakajima, Nishiyodogawa-ku, Osaka-shi, Osaka No. 2 Toyo Vehicle Co., Ltd. (72) Inventor Shuzo Shimamura 2-2-1 Nakajima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture Toyo Vehicle Co., Ltd. (72) Inventor Tetsuya Hata 1-1-1 Sakeori, Kofu-shi, Yamanashi Japan Hoshi Co., Ltd. (72) Inventor Akira Shimizu 1-11-1 Sakaori, Kofu City, Yamanashi Nissei Co., Ltd. JP, B2)

Claims (2)

(57) [Claims] 1. A workbench for inspecting a train line is provided on an upper part of a vehicle body, and an inspection device is provided on the workbench, and the workbench is elastic in a vertical direction following a displacement of a height position of the trainline with respect to a track. A train line inspection vehicle including a pantograph that expands and contracts in contact with a train line, a means for detecting displacement of a height position when the pantograph expands and contracts in the vertical direction, and a displacement obtained from the detecting means. An electric line inspection vehicle, comprising: a drive unit that moves the work platform up and down based on the amount. 2. A workbench for inspecting a train line is provided on an upper part of a vehicle body, and an inspection device is provided on the workbench, and the workbench is elastic in a vertical direction following displacement of a height position of the trainline with respect to a track. A train line inspection vehicle including a pantograph that expands and contracts in contact with a train line, a means for detecting displacement of a height position when the pantograph expands and contracts in the vertical direction, and a displacement obtained from the detecting means. An electric line inspection vehicle, comprising: a drive unit for moving the work platform up and down based on an amount, and controlling the work platform up and down so that a distance between the work platform and the train line is constant.