JP2687219B2 - Device for attaching the discharge electrode to the overhead distribution line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to mounting of a discharge electrode for a known lightning arrester in the vicinity of an insulator of an overhead distribution line laid on a utility pole. It relates to the device.

[Prior Art] Conventionally, in order to attach this type of discharge electrode to an overhead distribution line erected on a utility pole, a worker climbs onto the utility pole, or a worker rides on a wagon that can be lifted up and down on a work vehicle. The discharge electrode is attached to the overhead distribution line, and the screw is tightened with a tool such as pliers or a monkey wrench to attach the discharge electrode.

[Problems to be solved by the invention]

In the above-mentioned conventional example, the worker must climb the utility pole or ride on a wagon that can be lifted up and down on the work vehicle and go near the overhead distribution line to perform the work, so the work can be performed without stopping the power transmission. Is extremely dangerous to do,
However, stopping the power transmission has a great impact.

The apparatus for mounting a discharge electrode on an overhead distribution line according to the present invention is provided for the purpose of enabling a worker to mount the discharge electrode on the overhead distribution line without approaching the overhead distribution line.

[Means for solving the problem]

As a means for solving the above problems, the present invention rotatably pivots one side ends of a pair of semi-cylindrical bodies made of an insulator to be fitted to an overhead distribution line, The tip of the semi-cylindrical body from the outer surface to the inner surface of the semi-cylindrical body penetrates into contact with the overhead distribution line, and the discharge metal piece having a head at the base end
Device for attaching a discharge electrode to the overhead distribution line, which is attached to the central part of the one semi-cylindrical body, and the flanges formed at the other end of the pair of semi-cylindrical bodies are fastened with screws to attach to the overhead distribution line A drive shaft that is connected to a drive source shaft provided in a manipulator is rotatably installed, and a bevel gear mechanism, a torque limiter, and a one-way clutch from the middle of the drive shaft to the drive shaft. A screw turning mechanism disposed substantially at a right angle is provided adjacent to the mounting table of the one semi-cylindrical body forming the discharge electrode, and is rotatably attached to a worm provided at the tip of the drive shaft. A worm gear piece provided at the base end of the pivotally mounted arm meshes with the other side end of the other semi-cylindrical body that forms the discharge electrode locked at the tip of the arm by rotation of the arm. The other brim that was formed, While pressing the one flange formed on the other end of the cylindrical body, the screw that has been passed through the one flange,
The device for attaching a discharge electrode to an overhead power distribution line is characterized in that the screw turning mechanism is configured to tighten the screw hole formed in the other flange.

[Action]

The installation device of the discharge electrode to the overhead distribution line according to the present invention is configured such that one semi-cylindrical body that forms the discharge electrode in advance is placed on the mounting table that constitutes the installation device. The head of the screw penetrating the collar formed at the other end of the one semi-cylindrical body is engaged with the screw turning mechanism. Further, a flange formed on the other end of the other half-cylindrical body forming the discharge electrode is locked to the tip of the rotatably provided arm.

In this state, the mounting device is moved through the manipulator so that one of the semi-cylindrical bodies forming the discharge electrode fits into the overhead power distribution line.

Then, when the drive shaft is rotated in association with the drive source shaft provided in the manipulator, the screw turning mechanism is driven from the middle of the drive shaft via the bevel gear mechanism, the torque limiter, and the one-way clutch, respectively. The screw threaded through the collar formed at the other end of the one semi-cylindrical body forming the discharge electrode is rotated.

On the other hand, due to the engagement of the worm provided at the distal end of the drive shaft and the worm gear piece provided at the base end of the rotatably provided arm, the arm rotates clockwise in the drawing, The flange formed on the other end of the other half cylinder forming the discharge electrode locked at its tip is pressed against the flange formed on the other end of the one half cylinder, and the flange is formed. The screw that has been penetrated through is screwed into a screw hole provided in the other flange and tightened to attach the discharge electrode to the overhead distribution line. Then, when the drive shaft is reversely rotated in conjunction with the drive source shaft of the manipulator, the arm returns to the original position, and the attachment of the discharge electrode is completed.

〔Example〕

FIG. 1 (A) shows an embodiment of a device for attaching a discharge electrode to an overhead distribution line according to the present invention. This discharge electrode 1 is well known, and as shown in FIG. 2 to FIG. , Utility pole 2
The insulator 4 attached to the arm 3 of the arm 3 is fitted with the overhead distribution line 6 attached via the bind wire 5 to one end of the pair of semi-cylindrical bodies 1a, 1a 'made of an insulator by the pivot shaft 1b. One half of the semi-cylindrical body 1a is pivotally rotatably pivoted, and one end of the semi-cylindrical body 1a projects upward from the bottom surface 1c to contact the overhead power distribution line 6 and the other end extends downward from the bottom surface at a predetermined distance in the drawing. The metal piece 1d for discharge projecting through is embedded, and the overhead distribution line 6 is sandwiched between the pair of semi-cylindrical bodies 1a, 1a 'forming the discharge electrode 1, and the collars 1e, 1e formed on both ends of the other side, The discharge electrode 1 is attached to the overhead distribution line 6 by tightening 1e with a screw 1f, and the present invention relates to a mounting device for attaching the discharge electrode 1 to the overhead distribution line 6.

In FIG. 1 (A), 11 is a drive shaft that is connected to a drive source shaft 8 provided in the manipulator 7 via a torque limiter 9, and both ends of the drive shaft 11 and an intermediate portion thereof via a bearing 12. It is rotatably installed.

From the middle of the drive shaft 11, a screwdriver mechanism 20 arranged substantially perpendicularly to the drive shaft 11 via a bevel gear mechanism 13, a torque limiter 14, and a one-way clutch 15 forms one of the discharge electrodes 1. It is provided adjacent to the mounting table 16 of the semi-cylindrical body 1a.

The bevel gear mechanism 13 is composed of a bevel gear 13a fixed to the drive shaft 11 and a bevel gear 13b fixed to a rotary shaft 18 arranged substantially orthogonal to the drive shaft 11.

The torque limiter 14 is well known, for example, a friction plate 14a attached to the rotary shaft 18 and a friction plate 1 provided on the relay shaft 19 so as to be pressed against the friction plate 14a by a disc spring 14b.
It is formed from 4c.

The one-way clutch 15 is well known, and one side 15a thereof is attached to the relay shaft 19 and the other side 15b thereof is attached to a screw rotating shaft 20a of the screw rotating mechanism 20. A bifurcated piece is formed on the upper end of the screw turning shaft 20a, and a support piece 2 extending downward from the lower end of the screw turning tool 20b is formed between the bifurcated pieces.
0c is slidably inserted, and a pin 20e supported by a bifurcated piece penetrates through a long hole 20d formed in the supporting piece 20c along the longitudinal direction. Further, the screw turning tool 20b is pushed up by the spring 20f provided in the lower part thereof.

A worm 21 is provided at a tip end portion of the drive shaft 11, and a worm gear piece 24 provided at a base end portion of an arm 23 pivotally attached to the worm 21 by a pivot shaft 22 is meshed with the worm 21. A pin 26 is attached to the end of the arm 23 through a pin holding piece 25, and the lower end 27a of the pin 26 is rotatably attached to a portion 17 of the discharge electrode 1 near the mounting table 16. First long hole formed in the upper end of the link 27 in the longitudinal direction
The first elongated hole 27b is slidably fitted in the 27b.
Second long hole on the side of the mounting table 16 of the discharge electrode 1 in a position parallel to
27c is formed, and a clamp piece 28 having a clamp claw 28a is slidably inserted into the second elongated hole 27c.
The clamp piece 28 is pulled toward the lower end of the link 27 by a spring 29, and the clamp piece 28 is provided with a hook 28b for pulling the clamp piece 28 against the spring 29.

The mounting table 16 of the discharge electrode 1 and the pin holding piece 25 holding the pin 26 can be appropriately replaced via a mounting screw or the like according to the size of the discharge electrode 1.

A projecting piece 23a is formed at a portion where the arm 23 is rotatably pivoted by a pivot shaft 22, and a pole 31 is provided on the projecting piece 23a by being biased by a spring 30 so as to project. Therefore, in the upright state of the arm 23, the pole 31 is in contact with the machine frame 32 and is pushed into the projecting piece 23a against the spring 30. In this pushed-in state, even if the worm 21 reversely rotates and the arm 23 stands up and then the worm 21 further rotates backward, the arm 23 is prevented from standing up further.

Further, when the worm 21 rotates in the normal direction, pushing force acts on the protrusion 23a formed on the arm 23 via the spring 30 and the pole 31 to move the arm 23 to the worm 2
Since the worm gear piece 24 provided at the base end portion of the arm 23 and the worm 21 are disengaged from each other, the start of engagement is surely started because the arm 23 is slightly rotated clockwise in the figure regardless of the forward rotation. The arm 23 is brought down by the normal rotation of the worm 21 thereafter.

Since the device for attaching the discharge electrode to the overhead distribution line has the structure described above, the discharge electrode 1 can be previously prepared.
One half-cylindrical body 1a forming the, while mounting on the mounting table 16 constituting the mounting device, the screw 1f penetrating the collar 1e formed at the other end of the one half-cylindrical body 1a. Head of
1f ′ is a screwdriver 20b that forms the screwdriver mechanism 20.
In advance. Further, the collar 1e formed on the other end portion of the other semi-cylindrical body 1a 'forming the discharge electrode 1 is slidably attached to the link 27 engaged with the tip end portion of the rotatably provided arm 23. The clamp claw 28a of the provided clamp piece 28 is locked.

In this state, the mounting device is moved via the manipulator 7 so that the pair of semi-cylindrical bodies 1a forming the discharge electrode 1 are fitted to the overhead distribution line 6 from below in the figure.

When the drive shaft 11 is rotated in conjunction with the drive source shaft 8 provided in the manipulator 7, the bevel gear mechanism 13, the torque limiter 14, and the one-way clutch 15 are respectively passed from the middle of the drive shaft 11. The screw turning mechanism 20 is driven to rotate the screw 1f penetrating the collar 1e formed at the other end of the one semi-cylindrical body 1a forming the discharge electrode.

On the other hand, the worm 21 provided at the tip of the drive shaft 11
And the worm gear piece 24 provided at the base end portion of the rotatably provided arm 23, when the arm 23 is turned clockwise in the drawing and falls down, it engages with the tip end portion of the arm 23. The combined link 27 also falls together with this, and the clamp claw of the clamp piece 28 slidably provided on this link 27.
The other half-cylindrical body 1 forming the discharge electrode locked to 28a
The collar 1e formed on the other end of the a'is attached to the one half cylinder 1
a.Press the flange 1e formed on the other end of the a
The screw 1f that has been penetrated into the screw is inserted into the screw hole 1g provided in the other flange 1e and tightened to connect the discharge electrode 1 to the overhead distribution line 6
Attach to

When the drive shaft 11 is reversely rotated in conjunction with the drive source shaft 8 of the manipulator 7, the arm 23 returns to the original standing position, and the attachment of the discharge electrode 1 is completed.

Further, as shown in FIG. 1 (B), a screw 1h of the discharge electrode 1 attached to the overhead distribution line 6 in which the discharge metal piece 1d is embedded is tightened to aerate the tip of the discharge metal piece 1d. Also when connecting to the distribution line 6, the head 1h 'of the screw 1h is fitted to the screw turning tool 20b forming the screw turning mechanism 20,
The same operation as the tightening of the screw 1f is performed. When the tip of the metal piece for discharge 1d embedded in the screw 1h comes into full contact with the overhead power distribution line 6, the torque limiter 14 operates to control excessive tightening.

〔The invention's effect〕

As described above, the present invention rotatably pivots one side ends of a pair of semi-cylindrical bodies made of an insulator to be fitted to an overhead power distribution line, and a central portion of the one semi-cylindrical body. Of the discharge metal piece having a head at the base end, the tip of which penetrates from the outer surface to the inner surface of the semi-cylindrical body of the pair of semi-cylindrical bodies. A device for attaching a discharge electrode, which is attached to an overhead distribution line by tightening the flanges formed on the other end with screws, to the overhead distribution line, which is driven by being connected to a drive source shaft provided in the manipulator. A shaft is rotatably installed, and a screw turning mechanism that is disposed in the drive shaft in a direction substantially perpendicular to the drive shaft from the middle of the drive shaft via a bevel gear mechanism, a torque limiter, and a one-way clutch forms the discharge electrode. It is provided adjacent to the mounting table of one semi-cylindrical body, and A worm gear piece provided at a base end portion of an rotatably pivoted arm is meshed with a worm provided at an end portion, and the discharge electrode locked at the tip end portion of the arm is formed by the rotation of the arm. The other brim formed at the other end of the other semi-cylindrical body is pressed against the one brim formed at the other end of the one semi-cylindrical body, and is made to penetrate the one brim. The screw was formed into the screw hole formed on the other flange by the screw rotating mechanism, and the discharge electrode was attached to the overhead distribution line. It is necessary for an employee to climb a power pole or to ride on a wagon that can be lifted up and down on a work vehicle to go near an overhead distribution line, and hold a screwing tool by hand to attach the discharge electrode to the overhead distribution line. Lost manipulator Keep in connecting the mounting device, the discharge electrodes remotely can easily be attached to the overhead distribution lines.

Therefore, it is possible to attach the discharge electrode to the overhead distribution line without stopping the power transmission of the overhead distribution line.

In addition, since the driving of the screw turning mechanism for tightening and attaching the discharge electrode to the overhead distribution line is driven by the drive shaft via the torque limiter, when the tightening torque is increased after the tightening is completed, the torque limiter is increased. As a result, a further tightening torque is not transmitted to the screw turning mechanism, and there is no risk of screw breakage.

Further, even if the drive shaft is rotated in the reverse direction after the mounting of the discharge electrode is completed, the one-way clutch does not cause the tightened screw to rotate in the reverse direction and come off.

[Brief description of the drawings]

FIG. 1 (A) is a diagram showing an embodiment of a device for attaching a discharge electrode to an overhead distribution line according to the present invention, and FIG. 1 (B) is a view showing the discharge electrode being formed after the discharge electrode is attached to the overhead distribution line. FIG. 2 is a diagram showing a work of tightening a screw having a discharge metal piece embedded therein to bring the tip of the discharge metal piece into contact with the overhead distribution line; FIG. 2 is a perspective view in which a discharge electrode is attached to the overhead distribution line; The enlarged front view, FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG.
The figure is a plan view of the developed discharge electrode, and FIG. 6 is the same front view. 1 ... Discharge electrode, 2 ... Utility pole, 3 ... Arm, 4 ... Insulator, 5 ... Bind wire, 6 ... Overhead distribution line, 7 ... Manipulator, 8 ... Drive source shaft, 9 ... Torque limiter, 11 ... … Drive shaft 12 …… Bearing, 13 …… Bevel gear mechanism 13a, 13b …… Bevel gear, 14 …… Torque limiter 14a, 14c …… Friction plate, 14b …… Disc spring 15 …… One-way clutch, 15a …… One Side 15b …… Other end, 16 …… Discharging electrode mounting table 17 …… Near the mounting table 18 …… Rotary shaft 19 …… Relay shaft, 29 …… Screw rotating mechanism 20a …… Screw rotating shaft, 20b …… Screwdriver 20c …… Support piece, 20d …… Slot 20e …… Pin, 20f …… Spring 21 …… Worm, 22 …… Pivot axis 23 …… Arm, 24 …… Worm gear piece 25 …… Pin holding piece , 26 ...... Pin 27 ...... Link, 27a ...... Lower end 27b ...... First elongated hole, 27c ...... Second elongated hole 28 ...... Clamp piece, 28a ...... Clamp claw 28b ...... Hook, 29 ... Spring 30 ...... spring, 31 ...... Paul 32 ...... machine frame

Claims (1)

(57) [Claims] 1. A pair of semi-cylindrical bodies made of an insulating material to be fitted to an overhead distribution line, one end of which is rotatably pivoted, and the semi-cylindrical body of the one semi-cylindrical body is rotatably pivoted from the outer surface to the inner surface. A metal piece for discharge having a head at its base end is attached to the center of one of the semi-cylindrical bodies, and the other end of the pair of semi-cylindrical bodies is attached to the other end of the semi-cylindrical body. A device for attaching a discharge electrode that attaches to the overhead distribution line by tightening the formed flanges together with a screw, and connects the drive source shaft provided in the manipulator to rotate the drive shaft. A screw turning mechanism installed in the middle of the drive shaft via a bevel gear mechanism, a torque limiter and a one-way clutch in a direction substantially perpendicular to the drive shaft,
It is provided adjacent to the mounting table of the one semi-cylindrical body that forms the discharge electrode, and is provided at the base end of an arm pivotally attached to a worm provided at the tip of the drive shaft. When the worm gear piece is meshed and the arm is rotated, the other flange formed on the other side end of the other semi-cylindrical body that forms the discharge electrode is locked at the tip of the arm. It is configured to press against one of the flanges formed on the other end of the body and to tighten the screw that has been penetrated through the one flange into the screw hole formed in the other flange by the screw turning mechanism. A device for attaching a discharge electrode to an overhead distribution line, which is characterized in that