JP3240220B2 - 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 for maintaining and inspecting overhead lines and the like.

[0002]

2. Description of the Related Art Conventionally, overhead transmission lines, distribution lines, communication lines, and the like (these are referred to as overhead lines) follow the topography of the installation site, and are generally run over steel towers to avoid buildings. It is. For this reason, the overhead line may be bent up, down, left, and right with a steel tower as a break point.

A conventional overhead line traveling apparatus used for maintenance and inspection of such overhead lines (for example, Japanese Patent Laid-Open No. 1-24891).
No. 8, the overhead line moving device, which corresponds to the overhead line of the present invention) is provided with a large number of operating axes for changing the attitude of the bogie up and down and left and right, and when the vehicle passes through a steel tower. The aim is to make it possible to move continuously in response to a bent overhead line so that the overhead line can be inspected and run continuously.

On the other hand, a distribution line or a feeder line (feed line) installed along a railway does not have a sharp bend and is at most about 5 degrees. In some cases, Therefore, in such a case, there is a demand for an overhead line traveling device that is small, lightweight, and easy to hang on an overhead line even if there is no operation axis corresponding to the bending of the electric wire.

[0005]

When a conventional overhead line traveling device (for example, an overhead line traveling device described in JP-A-4-334913) travels on an overhead line, for example, a suspension insulator or the like used for a transmission line In order to travel through an obstruction caused by overhead wire support equipment such as described above, it is necessary to reverse the overhead wire traveling device and pass the vehicle avoiding obstacles.

However, in the conventional overhead line traveling device, since the support arm of the balancer for controlling the attitude of the device is long, the balancer interferes with the lower truss structure near the portal structure for supporting the overhead line. In some cases, the reversal operation due to the swing cannot be performed. For this reason, the range in which the vehicle can be continuously inspected is limited. In addition, when the vehicle travels with the balancer removed, a problem arises in that the vehicle cannot travel over the overhead wire support facilities such as the suspension insulators, and cannot travel continuously.

SUMMARY OF THE INVENTION It is an object of the present invention to enable the vehicle to travel while avoiding obstacles such as an overhead line incidental facility and a supporting portal structure, and to inspect the overhead line and its incidental facilities. It is to obtain a traveling device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a plurality of driving wheels provided on a truck are suspended with an overhead wire interposed therebetween.
In an overhead line traveling device that provides a balancer for attitude control on the carriage and travels along the overhead line, a drive shaft that is provided on the carriage substantially parallel to the overhead line and rotates around an axis as a rotation center axis , Provided at both ends of the drive shaft ,
The axis direction is orthogonal to the drive shaft and the rotation of the drive shaft
A pair of <br/> swinging shaft provided so as to swing around the drive shaft have, respectively provided on the pair of pivot shaft, one of the arms, synchronized with the swing of the shaft rocking and and in rotating the pivot shaft
While rotating mandrel, characterized by comprising a pivot consisting of L-shaped arm provided with the balancer to the other A over arm to respective fixed.

[0009]

[Action] With this configuration, balancer is in Sai overcome obstacles, swinging and turning without interference from other
Was carried out, so to reverse the carriage (apparatus body), the overhead wire traveling device through travel avoiding obstacles such as suspension insulators and door-shaped structure can be continuously performed inspection of the overhead line.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS. Here, the case of an overhead transmission line as the overhead line will be described.

First, front and rear drive wheels and a center drive wheel for running the apparatus are mounted on the apparatus body (cart). That is, in FIGS. 1 and 2, an axle 2 protruding in a cantilever shape in a direction perpendicular to the trolley 1 is provided at the front end of the front half of an elongated box-shaped trolley (apparatus main body) 1. The sprocket 3 is fixed to one end, and the front drive wheel 4 is attached to the other end.

The rear drive wheel 5 is attached to the rear axle 2 at the rear end of the truck 1, similarly to the case of the front drive wheel 4.
Attach sprocket 3 to the other end of.

A DC servo motor 6 equipped with a speed reducer 7
The attachment as a driving source, a reduction gear unit 7 is attached to the central drive wheel 8 through the axle 2.

Further, a gear 9 is attached to an intermediate portion of the axle 2,
The gear 9 is intermesh with the gear 10 and 11 on both sides, connecting these respective front wheel, the sprocket 3,3 for the rear wheels via a chain 12, 12. The structure by the driving force of the DC servo motor 6 is also transmitted to and rear portion the driving wheels 4,5 before branching.

The front, rear and center drive wheels 4,
The overhead transmission line 13 is fitted into the grooves 5 and 8 and pressed against the groove surface.

A flaw detector is attached to the carriage 1 as an inspection instrument as follows.

A DC motor 14 is fixed to the front half of the carriage 1 with its output shaft protruding forward.
A worm gear of a worm gear device 15 is attached to a front end of the output shaft of the worm gear, and the worm gear meshes with a worm provided in a direction orthogonal to the bogie 1. At the tip of this worm,
An arm 16 having a substantially L-shape is fixed, and a flaw detector 17 is attached to this end. The second half of the carriage 1, attaching the camera 18 with its lenses side overhead transmission line 13 side.

A balancer for controlling the attitude of the bogie 1, a balancer shaft for mounting the same, a DC motor as a drive source thereof, and a drive shaft are mounted as follows.

A DC motor 19 is attached to the center of the truck 1 and connected to a drive shaft 20 provided in parallel with the truck 1 via a worm gear device 21.

A pair is formed at each of the left and right ends of the drive shaft 20 .
Balancer shaft urchin via a bevel gear unit, a balancer provided as follows.

A bevel gear device 22 for turning (swinging, turning) provided at the tip of the drive shaft 20 has a drive shaft as shown in the drawing.
A first arm (pivot shaft) 23 which is perpendicular to 20, the first
L-shape in which one arm is coaxially supported on arm 23
Second arm (pivot) the balancer shaft 25 consisting of 24 of that is <br/> mounting arrangement.

A bevel gear 26 is attached and fixed to the tip of a second arm 24 rotatably supported coaxially within the first arm 23 as shown in the figure .
Meshes with bevel gear 27 fixed coaxially to the drive shaft 20. The balancer 28 is attached to the other arm tip of the L-shaped second arm 24. That is, the balancer 28
Is a drive shaft 20 for controlling the position of the reversal of the cart 1,
It is provided via swinging pivots 23 and 24 having two degrees of freedom, which are the driven axes. Inside the balancer 28 should be housed also serves as a weight and a storage battery and control unit comprising a power source as in the conventional device.

The overhead traveling line device configured as described above operates as follows.

(Driving of the device) The driving force of the DC servo motor 6 drives the central driving wheel 8 via the reduction gear 7 and the axle 2. Further, the driving force is branched from the axle 2, and the gears 10 meshed with the gear 9,
A front drive wheel 4 and a rear drive wheel 5 are driven via sprockets fixed to an axle via chains 11 and chains 12, 12 and sprockets 3, 3, which are linked to these sprockets. To travel.

[0025] (obstacles device Norikoshi) when this way device encounters an obstacle while traveling overhead line (support of overhead lines, etc.), Norikoshi example by the obstacle as follows You.

[0026] drives the DC motor 19, to oscillate the first arm 23 via a worm gear unit 21, the drive shaft 20
Changing the position of the balancer 28, 28 Te, at the same time, bevel gear 2
L-shaped second arm by rotation with respect to bevel gear 27 of No. 6
Numeral 24 rotates about the axis of the first arm 23 and the balancer 2
Since turning the 8, it is possible to change the posture of the carriage 1 in the balance between the balancer 28 and 28 as shown and described in FIG. 3 (reversing). This operation is repeatedly performed in the steps described with reference to FIG. 4, and the vehicle travels over obstacles (supports and the like) of the overhead power transmission line 13.

[0027] That is, referring to <br/> on "operation of the balancer" (see FIG. 2), the first arm 23 driving force is increased by the drive shaft 20 through the worm gear 21 of the DC motor 19 is swung And the bevel gear 26 meshing with the fixed-side bevel gear 27
Rotates while revolving around the drive shaft 20 . Accordingly
Te, bevel gears synchronized with swinging of the first arm 23
The rotation of 26 causes the L-shaped second arm ( pivot axis ) 24
It is turning the balancer 28, 28.

With such a mechanical connection, the bogie 1 is inverted due to the swinging / turning of the balancer shaft 25.

The "reversal operation of the overhead line traveling device (cart)" will be described (see FIG. 3).

The overhead line traveling device normally travels in the posture shown in FIG.

From the stationary state of FIG.
When 8, 8 is turned in the direction of the arrow, a rotational moment is generated such that the center of gravity of the device is always located immediately below the overhead power transmission line 13, and the bogie 1 rotates (FIG. 3B). further,
When the turning of the balancers 28, 28 is continued, the bogie 1 is in an inverted state as shown in FIG. When restoring from the inverted state, the balancers 28, 28 are turned in the opposite direction to that described above.

Next, a description will be given of the "moving-through (crossing over) operation of a portal structure as an actual obstacle" with reference to FIG.

Step 1 The front balancer 28 and the front drive wheel 4 pass under the suspension insulator 29 and pass through the portal structure.

Step 2 When the center drive wheel 8 approaches the suspension insulator 29, the vehicle stops running,
The cart reverses in the manner described above.

Step 3 The bogie travels in an inverted state, and the central drive wheel 8 passes below the suspension insulator 29.

Step 4 When the rear drive wheel 5 approaches the suspension insulator 29, the vehicle stops running,
Restore from the inverted state to the normal state.

Step 5 The vehicle travels in the normal state, and the rear drive wheel 5 and the rear balancer 28
Pass under the suspension insulator 29 and pass through the portal structure.

[0038] The above arrangement in this manner, two balancers 28, 28, both two degrees of freedom of the first, in synchronization with the operation of swing and swing to the second earth <br/> arm 23,24 one of D
This is realized only by the driving force of the C motor 19, and the overhead line traveling device can be light.

In the above description, the case of an overhead transmission line has been described. However, the apparatus of the present invention can be naturally applied to an overhead line formed by wires, ropes, or the like, as well as other electric lines.

[0040]

According to the overhead traveling device according to the present invention,
Since the two balancers are swung and swiveled by the two-degree-of-freedom arms to invert the device , the operating range of the balancer is small, mutual interference with the surroundings is small, and obstacles can be easily crossed. As a result, inspection while traveling on the overhead line can be performed.

[Brief description of the drawings]

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

FIG. 2 illustrates the structure and operation functions of the device shown in FIG.
FIG. 7 is a partially cutaway explanatory diagram for the purpose of the present invention.

FIG. 3 is an explanatory diagram of a reversing operation of the traveling device according to the present invention.

FIG. 4 is an explanatory view of an obstacle (portal structure) passing through operation according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Dolly 4 ... Front drive wheel 5 ... Rear drive wheel 8 ... Central drive wheel 13 ... Overhead transmission line (overhead wire) 16 ... DC servo motor 19 ... DC motor 20 ... Drive shaft 22 ... Bevel gear device 23 ... First Arm (oscillating axis) 24 ... Second arm (rotating axis) 25 ... Balancer shaft 28 ... Balancer 29 ... Suspension insulator

Continuing from the front page (72) Inventor Yoko Ikeda 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu Plant (72) Inventor Yoshinobu Ishikawa 1-Toshiba-cho, Fuchu-shi, Tokyo Inside the Fuchu Plant, Toshiba ( 56) References JP-A-4-334913 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 1/02

Claims (2)

(57) [Claims] 1. An overhead line traveling device which is suspended by a plurality of drive wheels provided on a truck with an overhead line interposed therebetween, and which is provided with a balancer for attitude control on the truck and travels along the overhead line. Rotate the axis provided on the carriage substantially parallel to the line
A drive shaft that rotates as a central axis ; and a drive shaft that is provided at each end of the drive shaft . The axial direction is orthogonal to the drive shaft and the drive shaft
A pair of pivot shaft provided so as to swing in mind, respectively provided on the pair of pivot shaft, one of the arms is synchronized with the swing of the rocking <br/> shaft and the swing while <br/> rotating the shaft as a rotation center axis, and characterized by including a pivot consisting of L-shaped arm provided with the balancer to the other a over arm to respective <br/> fixed Overhead line traveling device. 2. A pre-Symbol L-shaped fixed bevel gear attached to one of the arms, characterized in that it is configured to mate with other bevel gear provided et al are coaxially to the drive shaft The overhead line traveling device according to claim 1.