JP3212072B2 - Overhead traveling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead line traveling apparatus which travels on an overhead line such as an overhead transmission line or an overhead ground line, and which can be easily mounted on the overhead line.

[0002]

2. Description of the Related Art Overhead lines, such as overhead transmission lines and overhead ground lines,
Wires may be cut or blown by vibrations or lightning strikes caused by wind or snow, so check overhead wires regularly.
When damage is detected, measures such as repairing or replacing overhead wires are taken. Although there are various methods for inspecting overhead lines, the method using an overhead line traveling device is the most reliable, simple, and effective. The overhead line traveling device usually has a plurality of wheels provided with a circumferential groove that engages with the overhead line attached to the main body frame, and engages these wheels with the overhead line to cause the main body frame to ride on the overhead line. It is designed to run along the overhead line by rotating the wheels with a motor mounted, and to photograph the surface of the overhead line with a camera or video camera mounted on the main frame, or to detect damage by applying the electromagnetic induction method Inspection of overhead wires is performed by a container.

[0003]

However, the overhead line traveling device provided with the self-propelled mechanism and the damage detection mechanism as described above has a large overall size, for example, a length of 1170 mm, a height of 663 mm, and a width of 640 mm. Since the weight is as heavy as about 54 kg, handling is not easy. In particular, when the overhead line traveling device is mounted on an overhead line, a ladder is attached to the arm of the power transmission tower to serve as a scaffold, and workers riding on the overhead line traveling device use the rope or pulley to move the overhead line traveling device from the ground. Lifting, placing this on an overhead line, or after flaw detection of one overhead line, replacing the overhead line traveling device on the next overhead line, but these work on high places, have poor scaffolding, and This is very difficult because the circumferential groove of the wheel must be matched with the overhead line, and sometimes the overhead line traveling device may be derailed or the mounted equipment may be damaged by contact with the overhead line. It is an object of the present invention to provide an overhead line traveling device which pays attention to such a point and which can be easily attached to an overhead line and does not damage mounted equipment even in the event of derailing. It is.

[0004]

SUMMARY OF THE INVENTION An overhead line traveling device according to the present invention comprises a main body frame, a plurality of wheels having a circumferential groove engaged with the overhead line, and a motor for driving at least one of these wheels. An overhead line traveling device that travels on an overhead line by rolling of the wheel, wherein an attachment portion attached to the main body frame near at least one of the wheels.
Protruding from this mounting part, the tip of which protrudes from the side of the wheel.
With a clearance smaller than the diameter of the overhead wire.
And a temporary support member having a plate-like or rod-like shape is provided.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, temporary support members can be provided on both sides of a front wheel and a rear wheel. Further, these temporary support members are attached to the main body frame, and a plate-shaped or rod-shaped provisional member protruding from the attachment portion and having a tip located with a clearance smaller than the diameter of the overhead wire with respect to the side surface of the wheel. And a support portion.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a side view of an embodiment of the overhead line traveling device of the present invention, and FIG. 2 shows a front view of a state where the overhead line traveling device is mounted on an overhead line A. In these figures, the main body frame is composed of an upper frame 10 and a lower frame 20 detachably connected thereto. The upper frame 10 includes a pair of left and right side members 11, a front end member 12 and a rear end member that connect the vicinity of the front and rear ends of the both side members, and an upper end fixed to the vicinity of the front and rear ends of the both side members 4.
And an upper vertical member 13 of a book. Each of these members is formed of a square pipe having a rectangular cross section, and is fixed to another member by welding. Handle members 14 each formed of a round pipe are fixed by welding between the front end and the rear end of both side members 11, respectively. Of the four upper vertical members 13, two front and rear members (left and right in FIG. 1) are provided. Between the lower ends, flange members 15 each having an L-shaped cross section
Are fixed by welding.

[0007] The lower frame 20 is
0 and a lower left frame 40. The right lower frame 30 includes a flange member 31 having the same shape and reverse orientation as the flange member 15, a lower vertical member 32 having an upper end fixed near the front and rear ends thereof, and an end plate 33 fixed to lower ends of these lower vertical members. And a pair of connecting members 34 connecting these end plates. These end plates 33 and connecting members 34
All of them are manufactured by processing members having an L-shaped cross section and welding them to each other, and connect the lower ends of the lower vertical members 32 to each other, and constitute a detection circuit box storage unit. In the vicinity of the tip (left end in FIG. 1) of the flange member 31, a temporary support member 3 is provided.
5 is attached by a bolt nut 36. The temporary support member 35 is welded along a mounting plate 35a used for mounting to the flange member 31, a temporary support 35b welded near the tip of the mounting plate, and a bottom surface of the temporary support. And the temporary supporting portion 35
In the middle of the bottom surface of b and the reinforcing plate portion 35c, whether the lower surfaces of their tip portions are the same height as the lowermost point of the front wheel 54 described later,
Alternatively, a curved portion gradually rising toward the front wheel 54 is formed so as to be slightly higher. In addition, a clearance smaller than the diameter of the overhead wire A is formed between the front wheel 54 and the front end of the temporary support portion 35b and the reinforcing plate portion 35c.

[0008] The left lower frame 40 is a flange member 1
5, a flange member 41 having the same shape and reverse orientation, a lower vertical member 42 having an upper end fixed near the front and rear ends thereof, an end plate 43 fixed to lower ends of these lower vertical members, and a connection between these end plates. And a pair of connecting members (not shown).
These members are also fixed to the other members by welding, respectively, and connect the lower ends of the lower vertical members 42 to form a battery box storage section. One end of a fall prevention member 45 is rotatably attached to the end plate 43 by a pin 46. A temporary support member 47 is also attached to the vicinity of the distal end of the flange member 41 of the left lower frame 40 by bolts and nuts. The temporary support member 47 has the same left-right symmetric shape as the temporary support member 35 attached to the lower right frame 30.

Although illustration is omitted, a rear wheel 5 described later is used.
Temporary support members having the same structure as the temporary support members 35 and 47 are also arranged on both sides of 7, and are fixed near the rear ends of the flange members 31 and 41. The above-described upper frame 10, the lower right frame 30, and the lower left frame 40 can be detachably attached to each other by three sets of coupling members 16 including bolts and nuts inserted between the flange members 15, 31 and between the flange members 15, 41. Be linked. The free end side of the falling-off preventing member 45 is detachably fixed by a falling-off preventing fixing member 36 provided on the end plate 33 of the right lower frame 30.

Next, it is mounted on the upper frame 10,
A traveling device that travels along the overhead line A will be described. Hanging members 50 are attached to the lower surfaces of the central portions of the front end member 12 and the rear end member of the upper frame 10 via bolts (not shown). The suspension members 50 are provided with horizontally elongated shaft holes 51 in the front-rear direction of the upper frame 10, and the shafts 52 are inserted through these shaft holes in a direction parallel to the front end member 12 and the like. . In addition, in FIG.
The upper vertical member 13 is partially cut away to show the shaft 52 and the shaft 52. A pair of left and right links 53 are supported on the shaft 52 in a parallel and rotatable manner. A front wheel 54 and a middle wheel 55 are provided between the links 53.
Are rotatably mounted. A pair of left and right links 56 are also pivotally supported so as to be parallel and rotatable on a shaft (not shown) inserted through the suspension member of the rear end member. The rotation shafts of the rear wheel 55 and the rear wheel 57 are rotatably mounted. Therefore, the front link 53 and the rear link 56 are connected to each other by the rotation shaft of the middle wheel 55 so as to be swingable in the vertical direction.

A chain wheel 5 is provided at one end of the rotation shaft of the front wheel 54.
4a is attached. Two chain wheels 58a and 59a are also fixed to the connection shafts 58 and 59 rotatably inserted between the bending points of the link 53, respectively.
Two chain wheels 55a, 60a are also fixed to the connecting shaft 60 rotatably inserted between the rotation shaft of the middle wheel 55 and the bending point of the link 56, respectively.
A chain wheel is also fixed to the rotation shaft 7. Rear wheel 57
Is connected to a traveling motor 66 via a reduction gear mechanism (not shown) arranged in a gear box 65. A chain 67 is passed between the chain cars, and a rotational force is transmitted to the front wheel 54 and the middle wheel 55 in synchronization with the rear wheel 63. Reference numeral 68 denotes an encoder attached to the rotation shaft of the front wheel 54, which outputs a number of pulses corresponding to the rotation of the front wheel 54.

Next, main devices mounted on the main body frame will be described. First, a detection coil unit 70 is mounted on the front half of the upper frame 10. As shown in FIG. 2, the detection coil unit 70 has a coil frame 7 having a shape obtained by dividing a hexagonal pipe into two along the length direction.
When the main body frame is mounted on the overhead wire A, the detection coil unit 70 is mounted at the center of the overhead wire A.
Is fixed to the upper frame 10 via a coil opening / closing mechanism (not shown) so as to be positioned. Each detection coil 72 has two planar coils connected in series and arranged adjacent to each other in the length direction of the overhead wire A. These coils are connected in parallel with another series of the resistance elements, and An AC power supply is connected between the parallel connection points to form a bridge circuit. A detection circuit including an amplification circuit, a phase detection circuit, and various filter circuits is connected between the output terminals of the bridge circuit. The output of the detection circuit is connected to the other five detection coils 72. With the output from the detection circuit having the above configuration, the maximum value signal is guided to the maximum value detection circuit, and the selected maximum value signal is recorded in the data recorder.

A photographing unit 73 and a mirror 74 are mounted on the rear half of the body frame. The photographing unit 73 is attached to the flange member 41 of the left lower frame 40 so that the overhead line A can be photographed from obliquely below, and the mirror 74 is located on the opposite side of the overhead line A from the photographing unit 73. It is attached to the upper frame 10 via a mirror opening / closing mechanism (not shown) so as to be located. The mirror 74 is driven by a mirror opening / closing motor (not shown) so as to move away from the surface of the overhead line A when a damper or the like passes. Front link 53
An obstacle sensor 76 is attached via an arm 75 between the front end of the front link and the rear end of the link 56 on the rear side. The arm 75 and the obstacle sensor 76
Are not shown in FIG. 2 for convenience.

A detection circuit box 80 is mounted on the detection circuit box storage section of the lower right frame 30 and is detachably fixed by a belt or the like. The detection circuit box 80 includes a damage detection circuit that processes signals from the above-described six detection coils 72, a data recorder, various limit switches, and processes signals from various electric devices and electric circuit elements. Alternatively, various control circuits for outputting control signals to them are housed. This detection circuit box 80;
Various electric devices and electric circuit elements mounted on the upper frame 10 side are also detachably connected by wiring not shown. A battery box 90 is mounted on the battery box storage section of the left lower frame 40, and is detachably fixed by a belt or the like. The battery box and the traveling motor 66, the mirror opening / closing motor and the coil opening / closing motor (all not shown), and other various electric devices and electric circuit elements can be detachably attached by wiring not shown. It is connected.

The overhead line traveling apparatus of the present invention configured as described above is used for detecting damage to an overhead line laid on an inconvenient road such as a mountainous area, so that it is convenient for transportation. 16 is removed to divide the upper frame 10, the lower right frame 30, and the lower left frame 40, and the detection circuit box 80 and the battery box 90 are separated as necessary. At the site where the overhead wire is damaged, the upper frame 10, the right lower frame 30, and the left lower frame 40
The detection circuit box 80 and the battery box 90 are mounted and fixed to the lower right frame 30 and the lower left frame 40, respectively. The overhead line traveling device thus assembled is mounted on the overhead line A. In this case, the overhead line traveling device suspended from the ground is temporarily placed on the overhead line A such that the overhead line A comes to the lower surface of the temporary support member 35 or 47 near the front wheel 54 and the rear wheel 57, and then the overhead line is moved. The linear traveling device is slightly lifted and moved so that the circumferential grooves of the front wheel 54, the middle wheel 55, and the rear wheel 57 fit into the overhead line A. In this case, as shown in FIG. 3, the detection coil unit 70 is in a state where the coil frames 71a and 71b are open and the circumferential grooves of the wheels 54, 55 and 57 are engaged with the overhead wire A. ,
The coil frames 71a and 71b are closed. In addition, the fall prevention member 4
5 and the free ends thereof are fixed with fixing members 36.

When the traveling motor 66 is driven in this state, the wheels 54, 55, and 57 rotate, and the detector runs on the overhead line A by itself. During this time, an exciting current is applied to the six detection coils 72 to detect the surface of the overhead wire. The result is recorded in the data recorder together with the position signal from the encoder 68. When the detection signal is equal to or greater than a predetermined set value, the automatic camera of the photographing unit 73 operates to photograph the surface of the overhead line. During this photographing, an image reflected on the mirror 74 is photographed on the back surface of the overhead wire.

If a damper or the like approaches while the detector is running, the obstacle sensor 76 detects this and the detection coil opening / closing motor operates to open the coil frames 71a and 71b of the detection coil unit 70, and to move the mirror. Since the mirror 74 is also flipped up by the mirror opening / closing motor, it can continue to move forward or backward through an obstacle. After passing through the obstacle, the coil frames 71a and 71b and the mirror 74 are automatically closed, and the flaw detection and photographing are continued again. As described above, the overhead line traveling device of the present invention mounts temporary support members on the front and rear of the main body frame, and when the overhead line traveling device lifted from the ground is mounted on the overhead line, the overhead line Since the traveling device can be temporarily placed on the overhead line, the operation of mounting the overhead line traveling device on the overhead line can be performed easily and safely. Also, even if the overhead line traveling device should be derailed, the weight of the overhead line traveling device is supported by the temporary support member, and the upper frame and its mounted equipment are prevented from falling below the overhead line,
Therefore, it is possible to prevent the equipment mounted on the upper frame from being damaged by contact with the overhead wire.

In the above description, a temporary support member having a structure including the mounting plate portion 35a, the temporary support portion 35b having a gentle curved surface, and the reinforcing plate portion 35c has been described. The invention is not limited to this,
For example, as shown in FIG. 4, a temporary support member having a structure in which a temporary support portion 37 b made of a round pipe is attached near the tip of the attachment plate portion 37 a in a direction orthogonal thereto, and a reinforcing plate portion 37 c is welded therebetween. 37 can also be used. In FIG. 4, reference numeral 37d denotes a cap for closing the tip of the temporary support portion 37b. In the above description, an example in which the present invention is applied to an overhead wire damage detector to which the electromagnetic induction method is applied has been described. However, the present invention is not necessarily limited to this, and various types of overhead wire damage detection can be performed. It can be widely applied to vessels and overhead line traveling devices for towing the vessels.

[0019]

According to the present invention, the overhead line traveling device can be easily and safely mounted on the overhead line, and the mounted equipment can be prevented from being damaged by contact with the overhead line.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of an overhead line traveling device according to the present invention.

FIG. 2 is a front view showing a state where the overhead line traveling device of the present invention is mounted on an overhead line.

FIG. 3 is a front view when the overhead line traveling device of the present invention is mounted on an overhead line.

FIG. 4 is a partially longitudinal front view showing another embodiment of the temporary support member in the overhead line traveling device of the present invention.

[Explanation of symbols]

 10 Upper frame 11 Both side members 12 Front end member 13 Upper vertical member 14 Handle member 15, 31, 41 Flange member 20 Lower frame 30 Right lower frame 32, 42 ... Lower vertical member 33, 43 ... End plate 34 ... Connecting member 35, 37, 47 ... Temporary support member 36 ... ... Fall-off prevention fixing member 40 ... Left-side lower frame 45 ... Lowering member 51 Shaft hole 52 Shaft 53, 56 Link 65 Gear box 66 Running motor 68 Encoder 70 Detection coil unit 73 Photographing unit 74 Mirror 75 … Arm 76… Obstacle sensor 80… Detection circuit box 90… Battery box

Claims (1)

(57) [Claims] 1. A vehicle comprising: a main body frame; a plurality of wheels having a circumferential groove engaged with an overhead wire; and a motor for driving at least one of the wheels. An overhead line traveling device which is attached to the main body frame near at least one of the wheels.
A mounting portion that projects from the mounting portion,
Clear run smaller than the diameter of the overhead wire with respect to the side
An overhead line traveling device provided with a plate-shaped or rod-shaped temporary support member positioned in a horizontal direction.