JPH1132418A - Spacer grip-holding structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform the work of housing a bare conductor for multi- conductor power transmission line in a groove, having a circular-arc shaped cross section for a spacer grip-holding body. SOLUTION: A grip-holding portion 33 is provided for each support arm 32 of a spacer body frame 31. The grip-holding portion 33 comprises a grip- holding body 35 having a groove 41 with a circular arc cross section, a lid 37 for grip-holding a portion having a groove with a circular arc cross section, and a coupling mechanism 38 coupling the grip-holding lid 37 to the grip-holding body 35 by a spring force. The groove 41 with the circular arc cross section of the grip-holding body 35 has a shape which permits putting a bare conductor 3 to the groove 41 with the circular arc cross section of the grip-holding body 35 without hindrances. That is, the grip-holding body 35 has no protrusion at the open side of the groove 41 with the circular arc cross section, when the whole of the spacer 30 is rotated clockwise in Fig. By the simple operation of rotating the whole of the spacer 30, the bare conductor 3 can be housed in the groove 41 with the circular arc cross section of the grip-holding body 35, and the use of robot for this work can be achieved more easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping structure for gripping elementary conductors in a spacer for gripping elementary elements constituting a multiconductor power transmission line and maintaining a constant distance between the elementary elements.

[0002]

2. Description of the Related Art A spacer for a multi-conductor power transmission line has a structure in which grip portions corresponding to the number of element conductors are provided on a spacer body frame. FIGS. 5 and 6 show an example of this kind of conventional spacer gripping structure. In the figure, reference numeral 1 denotes a support arm which is a part of a spacer main body frame, and 2 denotes a grip portion which grips the element conductor 3. The gripper 2 includes a gripper body 5 attached to the support arm 1 with bolts 4, a gripper lid 7 hinged to one side of the gripper body 5 with a pin 6, and a gripper lid 7. And a connecting mechanism 8 for connecting the tip of the gripping part to the other side of the grip part body 5 by a spring force.

The grip body 5 has a semicircular groove 11 for accommodating the elementary conductor 3, the gripper lid 7 has a semicircular groove 12 for clamping the elementary conductor 3, and the coupling mechanism 8 has A shaft 16 having a spring arm 15 hinged to the distal end of the gripper cover 7 via a pin 14, a shaft 16 having a flange 16 a and an engaging hemisphere 16 b at one end, and having a screw 16 c at the other end. A spring 17 is fitted to urge the shaft 16 toward the pin 14, and a nut 18 is screwed into the threaded portion 16 c of the shaft 16 to engage the shaft 16 with the spring arm 15.

[0004] The conventional gripping portion main body 5 is, as described above, from the viewpoint of general common sense that, when a linear body having a circular cross section is gripped by a halved member, a semicircular groove is formed in each member. The semicircular groove 11 was formed in the same manner as the lid 7, and thus the projection 20 was formed on the opposite side of the pin 6.

When the spacer having the above-described gripping portion 2 is attached to a multiconductor power transmission line, the element conductor 3 is inserted into the semicircular groove 1 of the gripping portion main body 5 with the gripping portion lid 7 opened as shown in FIG.
1, and then the cover 7 is closed, and the conductor 3 is sandwiched between the semicircular grooves 11 and 12 of the body 5 and the cover 7. Then, as shown in FIG. 8, the gripper cover 7 is pressed against the gripper body 5 by spring force and fixed. These operations are performed manually by a worker riding a spacecraft.

[0006] In the above-mentioned spacer mounting operation, the operation of accommodating the elementary conductor 3 in the semicircular groove 11 of the gripper main body 5 is performed at the position of the protrusion 20 at the shoulder of the semicircular groove 11 of the gripper main body 5. Then, the element conductor 3 is lifted once, and the operation is carried out so as to climb over the protruding portion 20 and be accommodated in the semicircular groove 11.

[0007]

As described above, the work of attaching the spacer to the multi-conductor power transmission line is a high-place work in which the worker rides on a spacecraft, and therefore, the work that can perform this spacer attaching work is performed. Although a robot is desired, as described above, the element conductor 3 is connected to the gripper body 5.
It is necessary to lift the elementary conductor 3 once and get over the projecting portion 20 when it is housed in the semicircular groove 11 of
It is very difficult to make the spacer mounting work robotic.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in consideration of the above-mentioned problem. When a spacer is attached to a multi-conductor power transmission line, the operation of accommodating the element conductor in the groove of the grip portion main body is made robotic without any obstacle. It is intended to provide a partial structure.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a grip body having an arc-shaped cross-section groove for accommodating a conductor attached to a spacer body frame, and a hinge connected to one side of the grip body. Gripping portion of a spacer, comprising: a gripping cover having an arc-shaped cross-section groove for clamping the elementary conductor; and a connecting mechanism for connecting the tip of the gripping cover to the other side of the gripping body by a spring force. In the structure, the arc-shaped cross-sectional groove of the gripper body is formed such that the center of the spacer substantially coincides with the center of the entire multi-conductor power transmission line and the position of each element conductor and the gripper is shifted from the circumferential direction. When the whole is rotated to one side, the element conductor is shaped so as to be accommodated in the arc-shaped cross-sectional groove of the grip portion main body without any obstacle.

[0010]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIGS. FIG. 1 is a front view of a spacer 30 for a multi-conductor power transmission line employing a gripping structure according to an embodiment of the present invention. The spacer 30 is for a four-conductor power transmission line composed of four elementary conductors 3, and the spacer body frame 31 is
Each support arm 32 is provided with a grip portion 33.

As shown in FIGS. 2 to 4, the grip 33 is connected to a grip body 35 attached to the support arm 32 with bolts 34, and is hinged to one side of the grip body 35 with a pin 36. The gripping lid 37 and the gripping lid 3
7 is connected to the other side of the grip body 35 by a spring force.

The grip body 35 has an arc-shaped groove 41 for accommodating the elementary conductor 3, and the gripper cover 37 has an arc-shaped groove 42 for clamping the elemental conductor 3. In the present invention, as shown in FIG. 1, the arc-shaped cross-sectional groove 41 of the grip body 35 is formed such that the center of the spacer 30 (indicated by O in FIG. 1) is the center of the entire multiconductor power transmission line (in this case, also O). And the entire spacer 30 is rotated clockwise in FIGS. 1 and 2 from a state in which the position of each elementary conductor 3 and the position of the grip portion 33 are shifted in the circumferential direction (that is, the state of FIGS. 1 and 2). In this case, the element conductor 3 is configured to be accommodated in the arc-shaped cross-sectional groove 41 of the grip portion main body 35 without any obstacle. That is, the grip body 35 has a shape in which the protruding portions 20 of the conventional grip 2 shown in FIGS. 5 and 6 are removed. The connecting mechanism 38 of the embodiment includes a pin 44 at the tip of the gripper cover 37.
A shaft 46 having a flange 46a and an engaging hemispherical portion 46b at one end and an enlarged portion 46c at the other end, and a shaft 4 fitted on the shaft 46.
6 comprises a spring 47 for urging the pin 6 toward the pin 44.

When attaching the spacer 30 having the above-described grip portion 33 to a multiconductor power transmission line, as shown in FIG. 1 or FIG. It is housed in the groove 41 and then the gripper cover 3
7 is closed, the element conductor 3 is sandwiched between the grooves 41 and 42 of the arcuate sections of the gripper body 35 and the gripper cover 37, and FIG.
As described above, the gripper cover 37 is pressed against the gripper body 35 by a spring force and fixed by the coupling mechanism 38. These operations are assumed to be performed by a working robot for the time being. However, since the robot itself is not related to the configuration of the present invention, a description thereof will not be given. In the above-mentioned spacer mounting operation, the operation of accommodating the elementary conductor 3 in the arc-shaped cross-sectional groove 41 of the grip portion main body 35 is performed by centering the entire spacer 30 around the center O in FIGS.
2 is rotated clockwise in FIG. 2 to apply the arc-shaped cross-sectional groove 41 of the gripper body 35 of each gripper 33 to the elementary conductor 3. Note that, in FIG. 2, the relative movement between the grip portion 33 and the element conductor 3 is indicated by a one-dot chain line as a trajectory of the element conductor 3 moving toward the grip section 33. In this case, since the grip body 35 has no protrusion on the side opposite to the pin 36 of the arc-shaped cross-section groove 41, when the spacer 30 is rotated as described above, that is, the elementary conductor 3 is indicated by a chain line in FIG. As shown, when the element 3 is rotated relative to the grip portion 33, the element conductor 3 has no arc-shaped groove 4
1 In this way, unlike the conventional spacer mounting operation, since the operation of once lifting the elementary conductor 3 and housing it in the arc-shaped cross-sectional groove 41 is unnecessary, it is easy to convert this elementary conductor taking-in operation to a robot.

In the present invention, the connecting mechanism 38 is not limited to the configuration of the embodiment, but is optional. In short, the distal end of the gripper cover 37 is pressed against the gripper body 35 by spring force, and the gripper cover 37 is connected and fixed to the gripper body 35, and the gripper lid 37 and the gripper body 35 are connected to each other. It suffices if a gripping force can be given to the elementary conductor 3. For example, the connection mechanism having the conventional structure shown in FIGS. 5 and 6 may be used. It is also conceivable to attach the connecting mechanism to the gripper body. In the embodiment, the spacer used for the 4-conductor power transmission line has been described.
The number of elementary conductors of the target multiconductor transmission line is arbitrary.

[0015]

According to the present invention, since the arc-shaped cross-section groove of the gripper body does not have a protrusion at a position opposite to the hinge portion,
By simply rotating the entire spacer when the element conductor is accommodated in the arc-shaped groove, the element conductor can be accommodated in the arc-shaped groove, and the operation can be easily made into a robot. Can be

[Brief description of the drawings]

FIG. 1 is a front view of a spacer for a multiconductor power transmission line having a grip portion structure according to an embodiment of the present invention.

FIG. 2 is an enlarged view of one grip portion structure in FIG.

FIG. 3 is a right side view of the grip portion structure in FIG. 2 in a state where a grip portion lid is set upright.

FIG. 4 is a front view of a state in which the element conductor is gripped by the grip portion structure.

FIG. 5 is a front view of a conventional gripping structure of a spacer.

FIG. 6 is a cross-sectional view of a state in which the element conductor is gripped by the grip portion structure of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 element conductor 30 spacer 31 spacer body frame 32 support arm 33 gripper 35 gripper body 36 pin 37 gripper lid 38 coupling mechanism 41 arc-shaped groove of gripper body 42 arc-shaped groove of gripper lid 47 Spring O spacer Center (center of the whole multi-conductor transmission line)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasuo Kojima 1-5-1 Kiba, Koto-ku, Tokyo Inside Fujikura Co., Ltd. (72) Inventor Junji Fukuda 1-1-5-1 Kiba, Koto-ku, Tokyo Stock Company Inside Fujikura (72) Inventor Tatsuharu Yoshikawa 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura

Claims (1)

[Claims] 1. A grip body having an arc-shaped cross-section groove for accommodating an element conductor attached to a spacer body frame, and an arc-section groove for clamping an element conductor hinged to one side of the grip section body. In the gripping portion structure of the spacer, which includes a gripping portion lid and a connecting mechanism for connecting a tip portion of the gripping portion lid to the other side of the gripping portion main body by a spring force, the arc-shaped cross-sectional groove of the gripping portion main body is When the entire spacer is rotated to one side from a state in which the center of the spacer is substantially coincident with the center of the entire multi-conductor transmission line and the positions of the element conductors and the gripping parts are shifted in the circumferential direction, the element conductors are obstructed. Characterized in that it is housed in an arc-shaped cross-section groove of the gripper body.