JPH0260123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an overhead line inspection vehicle, and more particularly, to an overhead line inspection trolley for mounting an overhead line inspection device for inspecting the condition of overhead lines (trolley wires) in electric railways. It's about structure.

In electric railways, trolley wires are used to supply electric power to electric vehicles such as trains. Figure 1a shows one type of trolley wire installation, in which a utility pole 2 is erected beside the track 1, and a suspension wire 5 is stretched around it using a bracket 3 and an insulator 4.
A trolley line 7 is suspended from the suspension line 5 using hangers 6 at regular intervals.

The height of the installed trolley wire 7 above the ground has upper and lower limits in order to be able to make stable contact with the pantograph of the electric vehicle, and it is necessary to maintain it within these limits.

The cross-sectional shape of the trolley wire 7 is normally shown in Figure 1b, and as it gradually wears out due to sliding contact with the pantograph, the amount of wear is measured, and if the wear reaches the limit, it is recommended to replace the wire. It will be done.

On the other hand, the contact surface of the pantograph that comes into contact with the trolley wire 7 also suffers from abrasion, and in order to prevent the wear from being locally unevenly distributed, the trolley wire 7 is fitted with steady rest fittings 8 for each utility pole 2 as shown in Fig. 1. As shown in c, the deflection is performed in a zigzag manner alternately on the left and right with respect to the orbit center line c. in this case,
For safe contact with the pantograph, a maximum deviation D value is determined, and exceeding this value is not allowed.

FIG. 1d shows the construction situation at a curved track section, in which the trolley wire 7 is constructed along the track curve (in a zigzag shape with a small deviation from the track center line c) by a curve trigger tool 8a.

The above-mentioned steady rest fittings 8 and curved trigger fittings 8a (hereinafter referred to as supporting fittings) for the deflection and curved portions are both connected to the bracket 3 via the insulator 4 and the wire 9, but if for some reason If an abnormal situation occurs such as the support fitting 8 hanging down, it will come into contact with the pantograph of the traveling vehicle.
Risk of destruction or damage to overhead wires or pantographs. In order to prevent such risks, standards are established for the mounting position and angle of the support fitting 8, and these standards are monitored and maintained.

An electric inspection vehicle has been developed to inspect the above-mentioned conditions of the overhead wire (abrasion, height, deviation of the trolley wire, and mounting angle of the support fittings).

Fig. 2 is a cross-sectional view illustrating an overview of the configuration and functions of an example of a conventional electrical inspection vehicle. A specially designed device is used for traveling and inspection, and since the trolley wire 7 is under pressure, the inspection device takes necessary measures against high pressure.

First, regarding the amount of wear on the trolley wire 7, an optical type is used as the trolley wire wear measurement device 11, which projects a beam of light such as a laser beam 11a through the skylight 10a and captures the reflected light from the trolley wire 7. Non-contact measurements are being carried out.

For measuring the height and deflection of the trolley wire 7 and the mounting angle of the support fitting 8 (hereinafter referred to as obstruction inspection), a measuring device installed on the roof of the vehicle body 10 insulated by an insulator 12 is used. A pantograph 13 is installed,
This is carried out using a height detector 13a and a measuring boat body (having a function of measuring the amount of deviation and detecting obstacles) 13b of the pantograph 13. Since these inspection sensors are contact type and have a high potential, the inspection signal is sent to the high voltage connection part 1 via the communication cable 14.
5 and is transmitted to the signal processing unit 16 at a safe potential using an optical coupling method. The cable lead-in hole 10b used to lead the communication cable 14 into the car from the roof also has the required pressure resistance,
It goes without saying that sufficient care must be taken regarding insulation.

The obtained inspection data regarding the trolley wire 7 is recorded in a chart in the recording section 17 to detect abnormalities, and is also recorded in a data recorder provided in the recording section 17 so that it can be recorded later on the ground. Statistical processing is being carried out.
Furthermore, a computer 18 is mounted on the electric inspection vehicle for online and real-time processing of the above data.

Now, as mentioned earlier, the electric inspection vehicle 10 described above can run on the main line at high speed and perform measurements, and can efficiently monitor the condition of overhead wires in real time over long stretches and long periods of time. Both the structure and inspection equipment are becoming larger and more complex. On the other hand, in addition to the main railway track mentioned above, there are side tracks within each station,
There are branch wires, etc., and it is necessary to timely inspect the trolley wires for these as well.
However, electric inspection vehicles cannot turn around easily, making it inconvenient or impossible to inspect sidings, etc.
In the past, manual inspection was required. However, manual methods require skill and are inefficient. Therefore, there is a need for a simple type of overhead wire inspection vehicle, which must have a small turning radius and be easy to handle, and a low speed is sufficient.
The inspection items include all of the above,
It is required to be highly reliable and economically efficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple overhead wire inspection vehicle for efficiently inspecting the condition of overhead wires on branch lines within a station.

The overhead wire inspection vehicle according to the present invention is designed to have a simple structure and be easy to handle in order to freely and easily inspect the condition of overhead wires such as arbitrary siding lines and branch lines in station premises and the like. For this purpose, the present invention uses a simple trolley-type vehicle body, and is equipped with a tower-type lifting section that can reach almost the height of the trolley wire.

The length of siding tracks in station premises is often relatively short, and there may be a large number of wires, so in order to facilitate the operation of such wires, it is necessary to It is desirable to be able to change lines freely without having to use a regular switch. Normal trolleys are not actively equipped with such functions. Therefore, one of the features of the present invention is that it is provided with a wire transfer mechanism mainly based on jacks.

Next, the trolley wire is usually installed at a height of about 5 meters above the ground, but in order to stably hold the overhead wire inspection device that inspects the trolley wire and supporting hardware in the position of the trolley wire, it is necessary to A three-stage elevating section made of square pipes will be provided. The lowest step, that is, the lower step leg, is immovable, and the middle step leg and the upper step leg can be raised and lowered at the same time by operating the same handle, which is characterized by easy handling and accurate height maintenance. This invention will be described below with reference to FIGS. 3 and 4 a and b.
will be explained in detail using

FIG. 3 is a perspective view of the structure of an embodiment of the overhead wire inspection vehicle according to the present invention. Although the structure and weight of the trolley 19 used as the base are intended to be lightweight, the height of the elevating and lowering sections mounted on the tower and the overhead wire inspection section are relatively high, so stability must be taken into account when deciding on the structure and weight. Trotsko 19 has a handshake 19a,
Of course, a brake handle 19b should be provided. However, this truck may be equipped with an engine and have a self-propelling function.

Next, the line transfer device 20 will be explained. Figure 4a
, the trolley 19 moves from the position shown in the figure to arrow A.
In order to proceed in the direction indicated by , it is normally necessary to open the switch 21 in the direction of arrow A by operating the switch 21 according to a regular procedure. The procedures and operations for such a switch vary depending on the location where the switch is installed, and some wiring terminals can be easily handled manually.
At important points, conversion can only be carried out under strict control and control through mechanization or automation and remote control.

In the overhead wire inspection vehicle according to the present invention, a wire transfer device 20 is provided to transfer the wire in a direction in which the switch 21 is not open, regardless of the above description.

FIG. 4b shows an embodiment of the structure of the wire transfer device 20, which is fixed under the floor at the front and rear portions of the trolley 19. Regarding the operating method, first, the front wheel 19c of the trolley 19 is placed at the position of the tip rail 21a of the switch 21 where the line is to be changed.
By rotating the handle 22, the jack 26 fixes the base 23, and the front part of the trolley 19, that is, the front wheel 19c, floats up. Next, the rod screw 27 is rotated by the handle 24, and the jack stand 26 is rotated.
With a fixed, the front wheel 19c moves to the left in the figure and comes directly above the tip rail 21a. Then, by rotating the handle 22 in the reverse direction and lowering the trolley 19, the front wheels 19c can be turned. Regarding rear wheel 19d,
The trolley 19 is moved forward and the same procedure as described above is performed at the position of the tip rail 21a, and the line change of the trolley 19 is completed. The above is for forward movement, but the same applies to backward movement.

Next, the elevating device 28 will be explained. The lifting device 28 has lower legs 28 made of metal square pipes.
The lower leg 28a is fixed to the substantially central portion of the trolley 19. The middle leg 28b is the lower leg 28a.
The upper leg 28c is sized to fit into the middle leg 28b, and rollers (not shown) are arranged on the inner surfaces of the lower leg 28a and the middle leg 28b to enable smooth lifting and lowering with less friction. It is.

The lifting mechanism includes a handle 29, a worm gear 30, and rack pinions 31a and 31 at the positions shown in the figure.
b, bevel gears 32a to 32c, spline shaft 3
3 and a spline bearing 34 are provided.
When the handle 29 is now rotated, the middle leg 28b is moved up and down by the rack and pinion 31a via the worm gear 30.

Further, the rotational force of the handle 29 is simultaneously transmitted to the bevel gears 32a, 32b, the spline shaft 33, and the bevel gear 32c in this order, and
The upper leg 28c moves up and down by the operation of 1b. In this case, the spline shaft 33 and the spline bearing 34
Due to the combined function, the spline shaft 33 is freely movable in the axial direction, and the upper stage leg 28c can be smoothly raised and lowered without any hindrance.

As described above, the elevating device 28 having a three-stage configuration can be easily and quickly raised and lowered by a single operation of the handle 29, and the maximum height can be maintained at about 4M above the required rail surface. In addition, the reduced height is approximately 2M lower than the rail surface, which is convenient for maintenance and storage.

The above-mentioned overhead wire inspection vehicle according to the present invention is equipped with an overhead wire inspection section 35 having a trolley wire wear measurement device and an overhead wire position inspection device as shown by the broken line at the upper part of the upper leg 28c, and the trolley 19 has a A recording and power supply unit is installed, and the whole consists of an overhead line inspection vehicle.

As described above, the overhead line inspection vehicle according to the present invention is based on a trolley (track running vehicle body), is equipped with a simple line transfer device, and is equipped with a three-stage lifting device that is easy to handle. It can be stably supported at a height close to the line, and meets the requirements for overhead line inspection work in places where there are short track lengths and many branch lines, such as sidings in station premises, that is, it is easy to handle and quick to turn. It is equipped with sufficient monitoring functions and is suitable for mounting the overhead line inspection equipment that is currently being applied for.In particular, it is suitable for installing overhead line inspection equipment on branch lines etc. with its own function without the need for normal point switching processing. can be easily moved to another orbit. Therefore, there is no need to affect the operation of other trains. For this reason, the effect is very large.

[Brief explanation of drawings]

Figures 1a, b, and c are explanations of the overhead line state of the trolley wire in electric railways. Figure 1a is a diagram showing an example of the trolley wire installation method, Figure 1b is a cross-sectional view of the trolley wire, and Figure 1b is a cross-sectional view of the trolley wire. Fig. 1c is an explanatory diagram of the trolley wire in a deflected overhead line state, Fig. 1d is an explanatory diagram of the erection method in a curved section, Fig. 2 is a block configuration diagram of an example of the configuration of a conventional electric inspection vehicle, Figs. 4a and 4b show an embodiment of the present invention, FIG. 3 is a structural diagram of a trolley for inspecting overhead wires, FIG. FIG. 4b is a structural diagram of the wire transfer device in FIG. 3. Symbol explanation, 1: Track, 2: Utility pole, 3: Support bracket, 4, 12: Insulator, 5: Suspension wire, 6: Hanger, 7: Trolley wire, 8: Steady rest metal fitting (support metal fitting), 8: Curved line Metal fittings (supporting metal fittings), 9: Wire, 10: Electrical inspection vehicle (body), 10a: Skylight, 1
0b: Cable lead-in hole, 11: Trolley wire wear measuring device, 13: Measuring pantograph, 13a: Height detector, 13b: Measuring boat body, 14: Communication cable, 15: High voltage connection section, 16: Signal processing section ,1
7: Chart recorder, 18: Computer, 1
9: Trotsko, 19a: handshake, 19b: brake handle, 19c: front wheel, 19d: rear wheel,
20: Transfer device, 21: Switch, 21a: Tip rail, 22, 24, 29: Handle, 23: Base stand, 26: Jack, 27: Bar screw, 28: Lifting section, 28a: Lower leg, 28b : Middle leg, 28c:
Upper leg, 30: Worm gear, 31a, 31b:
Rack pinion, 32a to 32c: bevel gear,
33: Spline shaft, 34: Spline bearing, 3
5: Overhead wire inspection section, 36: Recording power supply section.

Claims (1)

[Claims] 1 A bogie whose wheels are placed on a track, and a base platform fixed by lowering the base platform onto the track side and applying the weight of the bogie side, and then fixing the base platform by lowering the base platform onto the track side, and then fixing the base platform by lowering the base platform onto the track side, and then fixing the base platform by lowering the base platform onto the track side and applying the weight of the vehicle side. a jacking mechanism provided on the bogie for raising or lowering the bogie that has been raised to a height where the wheels are away from the track; and a jacking mechanism provided on the bogie for lowering the bogie that has been raised to a height where the wheels are away from the track; a horizontal movement mechanism that moves in the horizontal direction; a multi-stage elevating leg that is fixed to the trolley and moves up and down toward the trolley line with a single handle rotation operation; a measuring device for measuring the state of the trolley wire, and by operating the jacking mechanism and the horizontal movement mechanism, the wheel is placed on another track, and the track on which the trolley moves is changed to the other track. An overhead wire inspection vehicle that is characterized by its ability to be changed.