JPH0884415A - Sag adjusting metal tool - Google Patents

Abstract

PURPOSE: To realize structure which facilitates the robot operation of a sag adjusting metal tool for electric wire use. CONSTITUTION: In a sag adjusting metal tool (a) comprising a mounting part, one end side of which is mounted on an arm tool provided on a pole and a connection part 4 for connecting an insulator device to the other end side thereof, at the same time the connection part 4 being projectably supported within the inserting part 5 provided therebetween with the rotation restricted, a bolt B being rotatably provided to connect the connection part 4 to the mounting part, an attachment mounting part 2 for an attachment 10 used when the bolt B is turned in the mounting part is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slack adjusting metal fitting used when a wire is stretched on a utility pole by using a clamp, and particularly suitable for performing the tensioning work using a robot. Regarding

[0002]

2. Description of the Related Art FIG. 2 is a perspective view showing a state in which a conventional slack adjusting metal fitting b as shown in Japanese Utility Model Laid-Open No. 6-17310 is attached to a utility pole P. It is provided on both the left and right sides centering on the provided arm fitting A. That is, both the looseness adjusting fittings b, b are provided toward the wires L, L stretched on both sides of the arm fitting A, respectively.

FIG. 3 is an enlarged perspective view of the slack adjusting metal fitting b located on the left side of FIG. The slack adjustment metal fitting b has a U-shaped mounting portion 20 having a pair of holding pieces 20a, 20b for holding the arm metal fitting A from above and below, and a holding portion 20a, 20b side from the base of the mounting portion 20. It has an inserting portion 22 which extends in the opposite direction and which allows the connecting portion 21 to freely move in and out in the same direction as the longitudinal direction of the holding pieces 20a, 20b, and to restrain and hold the rotation.

The connecting portion 21 has a mounting hole 21a for mounting an insulator device (not shown in FIG. 3) on the opposite side of the holding pieces 20a and 20b, and the holding piece 20 is provided.
A nut portion 21b into which a bolt B described later is screwed is integrally provided on the a and 20b sides.

A bolt B whose head is located on the side of the mounting portion 20 is rotatably provided in the insertion portion 22, and the bolt B is the nut portion 21b of the connection portion 21.
Is screwed into.

Therefore, when the bolt B rotates, the connecting portion 21 expands and contracts in accordance with the rotation along the longitudinal direction of the holding pieces 20a, 20b, and the slack of the electric wire L can be adjusted.

[0007]

However, the above-mentioned conventional slack adjusting metal fittings are unsuitable particularly for safety from the viewpoint of safety in hot-wiring work in which an electric current is applied to an electric wire.

Explaining further with reference to FIG. 3, the adjustment of the slack of the wire requires the rotation of the bolt B, but if the operator directly performs this rotation, no problem occurs. However, as shown in FIG. 4, rotating the bolt B with the manipulator M of the robot R is an extremely difficult task because the interval at which the manipulator M is inserted is small.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a slack adjusting metal fitting which can easily perform robot work.

[0010]

In order to achieve the above-mentioned object, a slack adjusting metal fitting according to the present invention has a mounting portion which is attached to an arm metal fitting provided on a telephone pole on one end side and the other end side. In addition to having a connection part for connecting bitter insulator device,
The connection part can be freely inserted and removed in the insertion part provided between these parts.
In addition, in a slack adjusting metal fitting in which rotation is restricted and held, and a bolt is rotatably provided on the mounting portion and the connecting portion is connected, an attachment used when rotating the bolt on the mounting portion. It is characterized in that an attachment mounting portion is provided, and the attachment mounting portion has parallel flat surfaces on opposite sides in a direction orthogonal to the longitudinal direction of the bolt. The attachment has a bolt insertion portion into which the head of the bolt is inserted, and a drive portion that rotationally drives the bolt insertion portion, and the axial direction of the drive portion is orthogonal to the longitudinal direction of the bolt. It is characterized by doing.

[0011]

In the above structure, when the attachment is attached to the attachment attaching portion and the bolt is rotated, the connection portion is inserted into and removed from the insertion portion according to the rotation direction, and the slack of the electric wire is adjusted.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a front view of a sag adjusting metal fitting a according to an embodiment, FIG. 1B is a plan view of FIG. 1A, and FIG.
FIG. 4 is a perspective view of an attachment. The same components as those in FIGS. 2 and 3 will be described using the same reference numerals.

The slack adjusting metal fitting a has a U-shaped mounting portion 1 having a pair of holding pieces 1a and 1b for holding the arm metal fitting A from above and below, and a holding portion 1a, 1b side of the base portion of the mounting portion 1. An attachment mounting portion 2 on the opposite side to the upper and lower pieces 2a, 2b having parallel and flat surfaces, and a connecting portion 4 to be described later on the side opposite to the mounting portion 1 of the mounting portion 2 , 1b
And an insertion portion 3 that holds the rotation in a restrained manner.

The connecting portion 4 has a mounting hole 4a for mounting an insulator device (not shown in FIG. 3) on the side opposite to the holding pieces 1a, 1b, and the holding pieces 1a, 1b side will be described later. A nut portion 4b into which the bolt B is screwed is integrally provided.

A bolt B having a head located on the side of the attachment mounting portion 2 is rotatably provided in the insertion portion 3, and the bolt B is the nut portion 4 of the connection portion 4.
It is screwed into b.

Therefore, when the bolt B rotates, the connecting portion 4 expands and contracts according to the rotation along the longitudinal direction of the holding pieces 1a, 1b, and the slack of the electric wire L can be adjusted.

The attachment 10 has the shape of a rectangular parallelepiped having an upper wall 10a and a lower wall 10b corresponding to an interval of insertion and installation between the upper and lower pieces 2a and 2b of the attachment mounting portion 2, and the upper wall 10a has the same shape. Is the upper and lower pieces 2
A stopper piece 10c for positioning when the attachment 10 is inserted is provided between a and 2b.

From the side wall 10d on the left side of the attachment 10, a bolt insertion portion 11 into which the head of the bolt B is inserted is provided so as to project, and the front wall 10e thereof is shown in FIG. The driving unit 12 rotated by the manipulator M of the robot R is provided so as to project.

Although not shown, the attachment 10 is provided with a worm wheel in the bolt insertion portion 11 and a worm in the driving portion 12 so that when the driving portion 12 is rotated, the attachment 10 rotates. Accordingly, the bolt insertion portion 11 can be rotated.

Note that, instead of the combination of the worm wheel and the worm, a bevel gear may be combined.

In order to adjust the slack of the electric wire L with the slack adjusting metal fitting a according to this embodiment using the robot R as shown in FIG. 4, first, the manipulator M of the robot R attaches to the attachment mounting portion 2. The attachment 10 is inserted, and further, the head of the bolt B is inserted into the bolt insertion portion 11 and set.

Next, when the driving section 12 is rotated by the manipulator M, the connecting section 4 expands or contracts according to the rotation, and the slack of the electric wire L is adjusted.

When the sag adjusting operation is completed, the attachment 10 is pulled out from the attachment mounting portion 2 by using the manipulator M of the robot R, and the attachment 10 is removed.
Is used for other sag adjusting fittings.

[0024]

Since the slack adjusting metal fitting according to the present invention is provided with the attachment mounting portion of the attachment used when the bolt is rotated, the bolt can be easily rotated by the robot through the attachment. can do. Also, when the attachment mounting part has parallel flat surfaces on both sides facing each other in the direction orthogonal to the longitudinal direction of the bolt, the attachment can be easily set on the flat surface, and the robot work can be performed more easily. It has a smooth feature. Further, the attachment has a bolt insertion portion for inserting the head of the bolt, and a drive portion for rotationally driving the bolt insertion portion, and the axial direction of the drive portion is orthogonal to the longitudinal direction of the bolt. In this case, the drive unit can be easily rotated by the manipulator of the robot.

[Brief description of drawings]

1A is a front view of a slack adjusting metal fitting according to an embodiment, FIG. 1B is a plan view of FIG. 1A, and FIG. 1C is a perspective view of an attachment.

FIG. 2 is a perspective view of a mounting portion of a utility pole using a conventional slack adjusting metal fitting.

FIG. 3 is an enlarged perspective view of the sag adjusting metal fitting shown in FIG.

FIG. 4 is an explanatory diagram of robot work.

[Explanation of symbols]

 1 Attachment Part 2 Attachment Attachment Part 3 Insertion Part 4 Connection Part 10 Attachment 11 Bolt Insertion Part 12 Drive Part A Arm Bracket B Bolt P Power Pole

Claims (3)

[Claims] 1. A mounting portion to be mounted on an arm fitting provided on a telephone pole is provided at one end side, a connecting portion for connecting an insulator device is provided at the other end side, and is connected in an insertion portion provided between these portions. In a slack adjusting metal fitting in which a portion is held in a freely rotatable manner while restraining its rotation, and a bolt is rotatably provided at its mounting portion and its connecting portion is connected, the bolt is rotated at the mounting portion. A slack adjusting metal fitting provided with an attachment mounting portion for an attachment that is sometimes used. 2. The slack adjusting metal fitting according to claim 1, wherein the attachment mounting portion has parallel flat surfaces on opposite sides in a direction orthogonal to a longitudinal direction of the bolt. 3. The attachment has a bolt insertion part into which the head of the bolt is inserted, and a drive part that rotationally drives the bolt insertion part, and the axial direction of the drive part is the longitudinal direction of the bolt. The slack adjusting metal fitting according to claim 1 or 2, which is orthogonal to the direction.