JP2014121233A - Overhead wire inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overhead wire inspection device capable of reliably getting over a torsion preventing damper or the like.SOLUTION: An overhead wire inspection device 10 includes a pair of separated drive wheels 1 and 1, a motor 1m for driving the drive wheel 1, and a frame 2 formed as a frame. The drive wheel 1 has an annular rubber tire 11 fitted to an outer periphery of a rim 11r. The rubber tire 11 is provided with, on its outer periphery, a groove 111 formed with a gently curved surface in hyperbolic shape. Further, the rubber tire 11 has, on its outer peripheral surface, a continuous band-like rough part 12. The rough part 12 extends in the direction diagonally across the direction in which a power line W extends. Further, the rough part 12 is closed in the shape of V-like such that an apex is formed from an outer edge of the rubber tire 11 toward a central part. Therefore, a friction resistance on a tread of the rubber tire 11 is improved, and the rubber tire 11 can reliably get over a torsion preventing damper 6 provided on the power line W or the like.

Description

  The present invention relates to an overhead wire inspection apparatus. In particular, the present invention relates to a structure of an overhead wire inspection device that is inspected for damage to overhead wires such as a power transmission line or an optical fiber composite ground wire installed between steel towers, and that is self-propelled along the overhead wire.

  For example, overhead lines such as power transmission lines or optical fiber composite overhead ground lines installed between steel towers are often laid in mountainous areas, and these overhead lines may be damaged by lightning strikes. For this reason, electric power companies use a self-propelled overhead wire inspection device or the like to check for damage to overhead wires regularly or irregularly.

  Such a self-propelled overhead wire inspection device generally includes a pair of spaced drive wheels disposed on the upper side of the overhead wire, a framed frame that rotatably supports these drive wheels on the top, a frame It is comprised by the imaging device which images the external appearance of an overhead wire. And a pair of drive wheels or one drive wheel is rotated by a motor connected to a battery mounted on the frame, so that the overhead wire inspection device is self-propelled along the overhead wire. Further, the overhead wire is inspected for damage over almost the entire length of the overhead wire by imaging the appearance of the overhead wire with the imaging device while the overhead wire inspection device is self-propelled.

  However, the overhead wire as described above may be equipped with a twist preventing damper that prevents twisting of the electric wire or a hard snow ring that prevents snow from reaching the overhead wire. When such an obstacle is attached to the overhead wire, there is a problem that it is difficult for the driving wheel to get over these obstacles.

  In order to eliminate the above problems, a large arc surface capable of overcoming a torsion preventing damper or a difficult snow ring, and a small arc surface that is formed on the center bottom surface of the large arc surface and can be fitted to an overhead wire, An overhead wire inspection device having a drive wheel formed with a groove formed on the outer periphery of the drive wheel has been disclosed (for example, see Patent Document 1).

  Moreover, in order to eliminate the above-mentioned problem, a U-shaped shallow groove that can get over a torsion preventing damper or a snow-resistant ring, a V-shaped deep groove formed on the center bottom surface of the shallow groove, and a deep groove An overhead wire traveling machine including a drive wheel formed on the outer periphery of a drive wheel with a non-slip treatment part such as rubber coated over a shallow groove is disclosed (for example, see Patent Document 2).

JP-A-2-155409 Japanese Patent Laid-Open No. 5-126801

  However, in the overhead wire inspection device according to Patent Document 1, the large arc surface formed on the outer periphery of the drive wheel is formed smoothly, so that if the attempt is made to get over the torsion prevention damper or the hard snow ring, the drive wheel There is concern that it will slip easily. And when these obstructions are mounted on the inclined part, there is a concern that the driving wheel is more likely to slip. There is a need for an overhead traveling vehicle that has drive wheels that can be overcome without slipping with these obstacles.

  On the other hand, since the driving wheel provided in the overhead wire traveling machine according to Patent Document 2 is coated with a non-slip treatment portion such as rubber on the outer periphery, the obstacle is less than the driving wheel provided in the overhead wire inspection apparatus according to Patent Document 1. It is thought that slip with the thing is eased. However, the drive wheel provided in the overhead wire traveling machine according to Patent Document 2 has a problem that the rubber covering the U-shaped shallow groove is thin, and an anti-slip effect with an obstacle cannot be expected. There is a need for an overhead wire inspection device that can reliably get over obstacles such as a torsion prevention damper or a difficult snow ring. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and an object of the present invention is to provide an overhead wire inspection apparatus that can reliably get over obstacles such as a torsion prevention damper or a snowfall ring.

  The present inventors attach a ring-shaped rubber tire having a groove formed by a hyperbola-like gentle curved surface to the outer periphery of the drive wheel, and have a plurality of belt-shaped uneven portions extending in a direction intersecting with the direction in which the overhead wire extends. By forming on the outer peripheral surface of the rubber tire, it was found that obstacles such as a torsion prevention damper or a snowfall ring can be reliably overcome, and based on this, a new overhead wire inspection device such as the following is installed. It came to invent.

  (1) The overhead wire inspection device according to the present invention has a pair of spaced drive wheels disposed above the overhead wire, one or more motors for driving the drive wheels, and a pair of the drive wheels above. A frame that is supported rotatably, and the drive wheel is attached to the outer periphery of a rigid rim, and is capable of overcoming a torsion prevention damper provided on the overhead wire, or a hard snow ring. It has an annular rubber tire provided with a groove formed in a hyperbola-like gently curved surface on the outer periphery, and the rubber tire extends in a direction obliquely intersecting with the direction in which the overhead wire extends and extends from the outer edge toward the center. In this way, a belt-shaped uneven portion closed in a V shape is continuously provided on the outer peripheral surface so as to form a vertex.

  (2) It is preferable that the said drive wheel is arrange | positioned so that it may rotate in the direction closed from the direction where the said uneven | corrugated | grooved part opened with respect to the advancing direction of the said overhead wire.

  (3) The rubber tire is subjected to profile processing in which the concave and convex portions are regularly repeated in a wavy shape on the tread surface, and the protruding convex portions in which a part of the plurality of convex portions slightly protrude from the tread surface are intermittent. It is preferable that they are arranged.

  (4) A battery that is supported in a cantilever manner by a pair of suspension racks suspended from the upper part of the frame so as to face the pair of drive wheels, and that supplies power to the motor, and the appearance of the overhead wire It is preferable to further include a flat mounting table on which an imaging device for imaging is mounted.

  (5) It is preferable to further include a foldable rainwater prevention sheet that covers the mounting table from the upper side of the frame.

  The overhead wire inspection device according to the present invention has an annular rubber tire provided with a groove formed in a hyperbola-like gentle curved surface on the outer periphery, and the rubber tire has a belt-shaped uneven portion closed in a V shape on the outer peripheral surface. Since they are continuously provided, they can be reliably climbed over without slipping with respect to the torsion preventing damper provided on the overhead wire or the difficult snow ring.

It is a front view which shows the structure of the overhead wire inspection apparatus by one Embodiment of this invention. It is a left view which shows the structure of the overhead wire inspection apparatus by the said embodiment. It is a right view which shows the structure of the overhead wire inspection apparatus by the said embodiment. It is a perspective view which shows the structure of the drive wheel with which the overhead wire inspection apparatus by the said embodiment is equipped. It is a longitudinal cross-sectional view of the drive wheel with which the overhead wire inspection apparatus by the said embodiment is equipped, and is AA arrow sectional drawing of FIG. It is a longitudinal cross-sectional view of the drive wheel with which the overhead wire inspection apparatus by the said embodiment is equipped, and is a state figure which attached the damper for twist prevention and the difficult snow ring to the overhead wire. It is a front view of the drive wheel with which the overhead wire inspection apparatus by the said embodiment is equipped, and is AA arrow sectional drawing of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The overhead wire applied to the overhead wire inspection device according to the embodiment of the present invention will be described below as a transmission line erected between steel towers.

[Configuration of overhead wire inspection system]
Initially, the structure of the overhead wire inspection apparatus by one Embodiment of this invention is demonstrated. FIG. 1 is a plan view showing a configuration of an overhead wire inspection apparatus according to an embodiment of the present invention. FIG. 2 is a left side view showing the configuration of the overhead wire inspection apparatus according to the embodiment. FIG. 3 is a right side view showing the configuration of the overhead wire inspection apparatus according to the embodiment.

(overall structure)
1 to 3, an overhead wire inspection apparatus 10 according to an embodiment of the present invention includes a pair of spaced drive wheels 1, 1, a motor 1 m for driving the drive wheels 1, and a framed frame 2. ing.

  Referring to FIGS. 1 to 3, the pair of drive wheels 1, 1 is disposed above an overhead line (hereinafter referred to as a power transmission line) W. The frame 2 is a framed structure in which a plurality of square pipes or the like are connected, and a pair of drive wheels 1 and 1 are rotatably supported on the upper part.

  Further, referring to FIGS. 1 to 3, the frame 2 has a flat mounting base 21 arranged at the bottom. The mounting base 21 mounts the battery 3 and the imaging device 4. The battery 3 is connected to the motor 1m via a wiring (not shown) and supplies power to the motor 1m. The imaging device 4 can capture the appearance of the power transmission line W.

  1 to 3, the overhead wire inspection device 10 according to the embodiment includes a V-shaped mirror 14, an LED illumination unit 5, and a rainwater prevention sheet 1 c. The V-shaped mirror 14 is disposed on the upper part of the frame 2 so as to face the imaging device 4 with the power transmission line W therebetween. The V-shaped mirror 14 can project the outer surface of the power transmission line W that is a blind spot of the imaging device 4. The LED illumination unit 5 is attached to the upper part of the battery 3 and emits diffused light toward the power transmission line W. The rainwater prevention sheet 1c covers the mounting table 21 from the upper side of the frame 2 so as to be foldable.

  Referring to FIGS. 1 to 3, the motor 1m directly connects the drive wheels 1 via a gear reducer 1g. When the pair of motors 1 m and 1 m are rotated in one direction in synchronization, the drive wheels 1 and 1 are rotated and the overhead wire inspection device 10 can be advanced along the transmission line W. When the pair of motors 1m and 1m are rotated in the other direction in synchronization, the drive wheels 1 and 1 are rotated and the overhead wire inspection device 10 can be moved backward along the power transmission line W.

  1 to 3, when the pair of motors 1 m and 1 m are stopped synchronously, the rotation of the pair of drive wheels 1 and 1 is stopped and the overhead wire inspection device 10 can be stopped. By configuring the gear reducer 1g with a worm and a worm gear, an irreversible mechanism in which the force for rotating the drive wheel 1 is not transmitted to the motor 1m can be obtained. The gear reducer 1g can function as a brake device when the motor 1m is stopped.

  Next, each component of the overhead wire inspection apparatus 10 according to the embodiment will be described in detail. FIG. 4 is a perspective view showing a configuration of drive wheels provided in the overhead wire inspection apparatus according to the embodiment. FIG. 5 is a longitudinal sectional view of a drive wheel provided in the overhead wire inspection apparatus according to the embodiment, and is a sectional view taken along line AA in FIG. 4.

(Frame structure)
Referring to FIGS. 1 to 3, the frame 2 includes a pair of C-shaped frames 22 and 22 made of square pipes refracted in a C shape and a pair of L-shaped frames made up of square pipes refracted in an L shape. 23 and 23 are provided on the upper wings. Upper portions of the C-shaped frames 22 and 22 are bolted to the L-shaped frame 23 via a bracket 24. The lower part of a pair of C-shaped frames 22 and 22 forms a frame by welding a horizontal frame 25 made of a square pipe. Upper portions of the pair of L-shaped frames 23 and 23 are bolted to a horizontal frame 26 made of a square pipe.

  Referring to FIGS. 1 to 3, a square pipe member 27 that rotatably holds a rotating shaft 1 a coupled with a driving wheel 1 is bolted to a front end portion of an L-shaped frame 23. Thus, the rotating shaft 1 a is supported at both ends by the L-shaped frame 23 and the square pipe member 27. A gear speed reducer 1g is attached to the bracket 24. The output shaft of the gear reducer 1g and the rotary shaft 1a are connected by a universal joint.

  With reference to FIGS. 1 to 3, the frame 2 hangs a pair of suspension racks 28 and 28 from the upper part thereof. The upper end of the suspension rack 28 is bonded to the C-shaped frame 22 and is bonded to the L-shaped frame 23. The pair of suspension racks 28 and 28 cantilever the mounting table 21 so as to face the pair of drive wheels 1 and 1.

(Configuration of mounting base 21)
Referring to FIGS. 1 to 3, the mounting base 21 is provided with support legs 21f at its four corners. The mounting base 21 has an eyebolt 21i attached to the center thereof. By hanging an engine generator (not shown) on the eyebolt 21i through a chain (not shown), the overhead wire inspection device 10 can be run while charging the battery 3 with the generator.

(Configuration of rainwater prevention sheet)
Referring to FIGS. 1 to 3, the rainwater prevention sheet 1 c is formed of a waterproof plastic sheet or the like and covers a pair of C-shaped frames 22 and 22. Furthermore, the rainwater prevention sheet 1c extends above the pair of L-shaped frames 23 and 23.

  A locking plate 29 is attached to the lower part of the square pipe member 27. A hook member 29 f is provided at the tip of the locking plate 29. The mounting base 21 can be covered from the upper side of the frame 2 by locking a locking hole (not shown) provided on the front end side of the rainwater prevention sheet 1c to the hook member 29f. When the engagement between the rainwater prevention sheet 1c and the hook member 29f is released, the rainwater prevention sheet 1c can be folded to the side opposite to the horizontal frame 26.

(Configuration of drive wheel)
Referring to FIG. 4 or FIG. 5, the drive wheel 1 is constituted by an annular rubber tire 11 attached to the outer periphery of a rigid rim 11r. A shaft hole 11h is opened at the center of the rim 11r. The rubber tire 11 can be rotated by inserting the rotating shaft 1a into the shaft hole 11h and coupling them (see FIG. 2 or FIG. 3). The rubber tire 11 is provided with a groove 111 formed in a hyperbola-like gentle curved surface on the outer periphery. The rubber tire 11 can reliably get over the torsion preventing damper 6 or the difficult snow ring 7 provided on the power transmission line W (see FIG. 6 or FIG. 7).

  Referring to FIG. 4 or FIG. 5, the rubber tire 11 has a belt-like uneven portion 12 continuously provided on the outer peripheral surface. The uneven portion 12 extends in a direction that obliquely intersects the direction in which the power transmission line W extends. The uneven portion 12 is closed in a V shape so as to form a vertex from the outer edge of the rubber tire 11 toward the central portion. And the drive wheel 1 is arrange | positioned with respect to the advancing direction of the power transmission line W so that it may rotate in the direction closed from the direction where the uneven | corrugated | grooved part 12 opened (L direction of FIG. 4) (refer FIG. 7). .

  Referring to FIG. 5, the rubber tire 11 is subjected to profile processing in which a concave portion 12v and a convex portion 12t are regularly repeated in a wavy shape on the tread. Further, the rubber tire 11 has intermittently arranged protruding convex portions 13t in which a part of the plurality of convex portions 12t slightly protrudes from the tread surface. Thereby, the frictional resistance of the tread surface of the rubber tire 11 can be improved.

[Operation of overhead wire inspection system]
Next, while supplementing the configuration of the overhead wire inspection device 10 according to the embodiment, the operation and effect of the overhead wire inspection device 10 will be described while explaining the operation of the overhead wire inspection device 10. FIG. 6 is a longitudinal sectional view of a drive wheel provided in the overhead wire inspection device according to the embodiment, and is a state diagram in which a torsion preventing damper and a hard snow ring are attached to the overhead wire. FIG. 7 is a front view of a drive wheel provided in the overhead wire inspection apparatus according to the embodiment, and is a cross-sectional view taken along line AA in FIG. 6.

  Referring to FIGS. 1 to 3, the overhead wire inspection device 10 according to the embodiment includes an upper frame that supports a pair of drive wheels 1 and 1 and a mounting base 21 that faces the upper frame. It is lighter than the overhead wire inspection device.

  For example, a conventional overhead wire inspection apparatus has a motor and a gear reducer installed on the mounting base. Then, the rotation from the gear reducer is transmitted to the pair of drive wheels using a chain transmission device or the like. Thus, since the conventional overhead wire inspection apparatus has installed heavy objects on the mounting base, the upper frame and the mounting base are connected by the reinforcing member. The overhead wire inspection device 10 according to the embodiment eliminates the need for such a conventional reinforcing member that extends below the power transmission line W, so that it is easy to pass through the twist preventing damper 6 (FIG. 6 or (See FIG. 7).

  Referring to FIGS. 1 to 3, one of the reasons why the overhead wire inspection device 10 can be reduced in weight is that the frictional resistance of the driving wheel 1 is improved, so that the rated output of the motor 1 m can be reduced and the size is smaller than that of the conventional motor. It has also contributed to that.

  1 to 3, the overhead wire inspection device 10 according to the embodiment can be separated from an engine generator (not shown) and is lightweight, so that it is transported in a mountain area or lifted to a steel tower. Suitable for

  With reference to FIGS. 1 to 3, the overhead wire inspection apparatus 10 according to the embodiment includes, for example, a control box (not shown) that can be operated by a remote controller (not shown). Then, when the remote controller is operated and the pair of motors 1m and 1m are rotated in one direction in synchronization, the drive wheels 1 and 1 are rotated (L direction in FIG. 4), and the overhead line along the transmission line W The inspection device 10 can be advanced.

  With reference to FIG. 1 to FIG. 3, the overhead wire inspection apparatus 10 according to the embodiment operates a remote controller (not shown) to rotate the pair of motors 1 m and 1 m in the other direction and drive wheels 1 and 1. Rotates (R direction in FIG. 4), and the overhead wire inspection device 10 can be retracted along the transmission line W. When the pair of motors 1m and 1m are stopped synchronously, the rotation of the pair of drive wheels 1 and 1 is stopped and the overhead wire inspection device 10 can be stopped.

  Referring to FIGS. 1 to 3, the overhead wire inspection device 10 according to the embodiment makes a pair of spaced drive wheels 1, 1 arranged on the upper side of the power transmission line W, and these drive wheels 1, 1 rotate freely. A frame 2 that is supported on the upper part and an imaging device 4 that is fixed to the frame 2 and images the appearance of the power transmission line W are provided. Then, the overhead wire inspection device 10 is self-propelled along the power transmission line W by rotating the pair of driving wheels 1. 1 by the motor 1 m connected to the battery 3 mounted on the frame 2. In addition, by imaging the external appearance of the power transmission line W with the imaging device 4 while the overhead wire inspection device 10 is self-propelled, the power transmission line W can be inspected for damage over substantially the entire length.

  Referring to FIG. 6 or FIG. 7, the torsion preventing damper 6 is suspended from the power transmission line W by using a clamp 61 via an armor rod 6 a for protecting the power transmission line W from damage. A pair of weights 62 and 62 are attached to the lower end of the clamp 61 substantially in parallel with the direction in which the power transmission line W extends. The torsion prevention damper 6 can attenuate the vibration of the transmission line W by swinging the pair of weights 62 and 62 so as to cancel the vibration of the transmission line W due to wind.

  Referring to FIG. 6 or FIG. 7, it is difficult for the driving wheel provided in the overhead wire traveling machine according to the prior art to get over the torsion preventing damper 6. In the driving wheel 1 according to the embodiment, the rubber tire 11 is provided with a groove 111 formed with a hyperbola-like gentle curved surface, extends in a direction obliquely intersecting with the direction in which the power transmission line W extends, and extends from the outer edge to the central portion. A band-shaped concavo-convex portion 12 closed in a V shape so as to form a vertex toward the outer surface is continuously provided on the outer peripheral surface (see FIG. 4 or FIG. 5). Therefore, the drive wheel 1 according to the embodiment can improve the frictional resistance of the tread surface, and can easily get over obstacles such as the torsion prevention damper 6 or the hard snow ring 7.

  With reference to FIG. 6 or FIG. 7, the drive wheel 1 is preferably arranged so as to rotate in the closed direction from the direction in which the concavo-convex portion 12 is opened with respect to the traveling direction of the power transmission line W. Thereby, it rolls so that it may bite into obstructions, such as damper 6 for twist prevention, or difficult snow accretion ring 7, with respect to the advancing direction of power line W, and it can improve frictional resistance with an obstruction. In addition, referring to FIG. 5, it is preferable that a part of the plurality of protrusions 12 t is intermittently arranged with protruding protrusions 13 t slightly protruding from the tread surface of the rubber tire 11. This can be further improved.

  With reference to FIGS. 1 to 3, the overhead wire inspection device 10 according to the embodiment includes a foldable rainwater prevention sheet 1 c that covers the mounting base 21 from the upper side of the frame 2. Appearance can be checked. Moreover, the overhead wire inspection device 10 according to the embodiment includes the LED illumination unit 5 that illuminates the power transmission line W because the inside of the frame 2 becomes dark by using the rainwater prevention sheet 1c. The LED illumination unit 5 uses a diffused LED in order to use a highly directional LED as a light source for illumination.

The overhead wire inspection device according to the present invention can achieve the following effects.
(A) It is possible to easily get over obstacles such as a torsion prevention damper mounted on the overhead wire.
(A) Even if the overhead line is steeply rising and inclined, the drive wheel can travel without slipping easily.
(C) Since the configuration is compact and lightweight, it is excellent in transportation and workability, can reduce the fatigue of workers, and improve the safety of work.
(D) It can be used in rainy weather.
(E) It is expected that camera shake can be reduced.

  Although the overhead wire inspection device according to the present invention has been disclosed as an embodiment suspended on an overhead wire installed between steel towers, the application of the overhead wire inspection device according to the present invention is not limited to the overhead wire. The overhead wire inspection device according to the present invention can be applied to, for example, an optical fiber cable installed between steel towers, and can be applied to an overhead wire disposed above a railroad track.

DESCRIPTION OF SYMBOLS 1 Drive wheel 1m Motor 2 Frame 10 Overhead wire inspection apparatus 11 Rubber tire 11r Rim 12 Uneven portion 111 Groove formed in rubber tire 11 W Transmission line (overhead wire)

Claims (5)

A pair of spaced drive wheels located above the overhead wire;
One or more motors for driving these drive wheels;
A frame that supports a pair of drive wheels rotatably on the upper part, and
The drive wheel is mounted on the outer periphery of a rigid rim, and provided with a groove formed in a hyperbola-like gentle curved surface on the outer periphery, which is capable of climbing over a torsion prevention damper provided on the overhead wire or a hard snow ring. Having an annular rubber tire,
The rubber tire extends in a direction obliquely intersecting with the direction in which the overhead wire extends, and has a belt-like uneven portion closed in a V shape so as to form an apex from the outer edge toward the central portion on the outer peripheral surface. Overhead wire inspection equipment.   2. The overhead wire inspection device according to claim 1, wherein the drive wheel is arranged to rotate in a closed direction from a direction in which the uneven portion is opened with respect to a traveling direction of the overhead wire.   The rubber tire is provided with a profile processing on the tread where the concave portions and the convex portions are regularly repeated in a wavy shape, and a plurality of convex portions where a part of the plurality of convex portions protrude slightly from the tread surface are intermittently arranged. The overhead wire inspection device according to claim 1 or 2.   A battery that is cantilevered by a pair of suspension racks suspended from the upper part of the frame so as to face the pair of drive wheels, and that captures the appearance of the overhead wire The overhead wire inspection device according to any one of claims 1 to 3, further comprising a flat mounting table on which the device is mounted.   The overhead wire inspection apparatus according to claim 4, further comprising a foldable rainwater prevention sheet that covers the mounting base from an upper side of the frame.

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