JPH08191534A - Anchor clamp for power distribution in manipulator method mode - Google Patents

Abstract

PURPOSE: To provide an anchor clamp by which a wire can be inserted, passed and coupled without performing an operation to drive in a wedge by a method wherein a back-tension prevention means which couples a part of a compression sleeve used to compress a bare wire part at the end of a wire passed through a wire reception groove is arranged on the side of a clamp body. CONSTITUTION: A clamp body 1 which is molded integrally is constituted in such a way that an inclined trunk part 2' in which an inverted-U-shaped wire reception groove 2 into and through which a distribution wire is inserted and passed has been arranged and installed is arranged and installed at one end and that an insulator coupling part 3 is arranged and installed at the other end. A sleeve fitting groove 4 is formed at a drawing out port part 2a at the upper end of the inverted-U-shaped wire reception groove 2. A compression sleeve 5 the lower end of which is fitted to the sleeve fitting groove 4 so as to comminucate and whose length is prescribed has a tube structure in which a compression hole 6 into which a bare wire part for the wire passed through the wire reception groove has been formed at the inside, and the bare wire part is compressed by a compression tool. A back-tension prevention means 7 is composed of an L-shaped support piece 8 the lower end of which is shaft-attached by a support shaft 8a and of a hook-bent part 8b, and it is coupled by a bolt 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strain relief clamp for power distribution of a manipulator construction method which contributes to safety and labor saving of power distribution work.

[0002]

2. Description of the Related Art Generally, for overhead wire work of distribution lines, a worker climbs on a pole or from a bucket of an aerial work vehicle,
The distribution line that has been extended is held by the distribution strain relief clamp that is attached to the armband, and the line is extended. In this case, uninterruptible power distribution work is indispensable as the importance of stable power supply increases year by year. As an uninterruptible power distribution work in consideration of this safety and labor saving, a manipulator method (so-called robot method) has recently been studied. However, as the manipulator method, due to the workability of the robot and the like, the current shape of the electrical distribution hardware cannot be used. For example, among them, most of the existing detention clamps are wedge type detention clamps, and the detention clamps are not suitable for the manipulator construction method, and improvement is needed.

[0003]

That is, in the manipulator construction method, the robot-carrying vehicle stops on the side of the roadway, the boom is properly extended, and the cabin is raised to the working base for the work. In the structure of the conventional tow clamp, which is the rear side when inserting the electric wire, on the young side and the old side of the distribution line,
The insertion port becomes a blind spot, making it difficult to insert the wire. Another problem is that the current wedge-type strain clamp requires the work of driving the wedge to grip the wire after inserting the wire, but the current manipulator cannot perform the operation of driving the wedge. . Therefore, it is practically impossible to use the existing wedge type detention clamp.

In view of the above situation, the present invention is an electric wire (bare wire portion)
By using a compression sleeve for the member that directly grips,
It is an object of the present invention to provide a strain retaining clamp for power distribution in a manner of a manipulator construction method that solves the above problems by inserting and locking an electric wire without performing a hammering operation.

[0005]

According to the present invention, there is provided an integrally formed clamp main body having an inverted U-shaped electric wire receiving groove for inserting an electric wire at one end and an insulator connecting portion at the other end. A compression sleeve for compressing a bare wire portion of an end of an electric wire that passes through an electric wire receiving groove that is continuously provided in a sleeve fitting groove provided in an outlet portion of the electric wire receiving groove, and a back tension preventing unit that locks a part of the compression sleeve. Is arranged on the clamp body side.

Further, an integrally formed clamp body having an inverted U-shaped electric wire receiving groove for inserting an electric wire at one end and an insulator connecting portion at the other end, and an outlet portion of the electric wire receiving groove And a sleeve for inserting and compressing a bare wire portion of an electric wire that passes through an electric wire receiving groove that is continuous with the sleeve fitting groove that is provided in the section.

The back tension preventing means is composed of an L-shaped support piece protruding from the clamp body and a locking bolt for holding the upper end of the compression sleeve mounted on the hooked portion.

Further, the back tension preventing means is a seat member which makes the end of the compression sleeve screwed in the sleeve fitting groove of the clamp body detachable.

[0009]

With the above-described structure, the coating on the tip of the extended distribution line is stripped off by a predetermined length with a coated wire stripping tool separately attached to the manipulator, and the stripped wire and bare wire are removed. In this state, insert the compression sleeve into the inverted U-shaped wire receiving groove of the inclined body portion provided at the end of the clamp body from below, project at least this bare wire portion upward from the outlet, and insert the compression sleeve into the bare wire portion. With, the compression tool separately attached to the manipulator compresses and grips several places. The base portion of the compression sleeve is fitted in the sleeve fitting groove of the outlet of the clamp body. That is, it is an integral distribution strain clamp that compresses and grips the bare wire portion of the end of the wire inserted into the compression sleeve that is connected to the clamp body by operating the manipulator. In this case, at the tip (upper end) of the compression sleeve holding the wire,
The end of the L-shaped support piece, which serves as a means for preventing back tension protruding from the side of the clamp body, is rotated to face it, and the end of the locking bolt screwed into the hook fold is brought into contact with the compression sleeve to control the floating and to prevent back tension. To do. The other end of this detention clamp is connected to the armor side insulator. Further, in the configuration in which the back tension preventing means is provided with a screw-fixed seat member that allows the end of the compression sleeve to be attached and detached to the clamp body side, if the end of the compression sleeve is attached to the upper end of the seat member, it becomes immobile.

Further, as a pull-through use that also serves as a jumper wire for leading out the electric wire from the clamp body, a compression sleeve having a C-shaped cross section is used, and a predetermined bare wire portion is provided in the C-shaped opening of the compression sleeve. , And the outer circumference should be compressed.

[0011]

The present invention will be described below with reference to the drawings of the embodiments.

1 to 6 show an embodiment of a towing clamp having an L-shaped back tension preventing means, in which 1 is provided with an inverted U-shaped wire receiving groove 2 through which a distribution wire is inserted with a predetermined curvature. An integrally formed clamp body having an inclined body portion 2'and a clevis-shaped insulator coupling portion 3 arranged at the other end, and an outlet portion provided at the upper end of the inverted U-shaped wire receiving groove 2 of the clamp body 1. A sleeve fitting groove 4 is provided at the edge of 2a.
5 is a sleeve fitting groove 4 on the side of the outlet 2a of the wire receiving groove 2
A compression sleeve having a predetermined length, the lower end of which is fitted and continuously provided, and the compression sleeve 5 has a cylindrical structure in which a compression hole 6 into which the bare wire portion 11a of the electric wire 11 passing through the electric wire receiving groove 2 is inserted is bored. 7
Is a back tension preventing means for holding the tip (upper end) of the compression sleeve 5, and the back tension preventing means 7 has a supporting shaft 8a at the lower end at a shoulder position on one side of the inclined body portion 2'of the clamp body 1. Pivotally attached L-shaped support piece 8
And a locking bolt 9 that is screwed in at a right angle to the hooked portion 8b at the tip of the hook, and the whole construction of the locking bolt 9 serves as a distribution detention clamp 10 in a manipulator construction mode.

This operation will be described next. First, the tip of the electric wire 11 which is an appropriately extended distribution wire is temporarily locked with a shimerer (stretching base) or the like (not shown) and tightened. In this state, the covering portion of the electric wire 11 is peeled off by a predetermined construction method by the length for inserting into the compression sleeve 5. This coated wire stripping work is performed by, for example, attaching a known coated wire stripping tool (not shown) to one of a pair of manipulators protruding from a cabin mounted on a vehicle, and gripping and cutting the electric wire 11 with the coated wire stripping tool. Bare wire part 1 with a certain length after stripping
1a is exposed (see FIG. 13).

Here, the electric wire 11 is inverted U of the clamp body 1.
The circular wire receiving groove 2 is inserted into and guided from the lower end of the arc-shaped lead-in portion 12, and at least the bare wire portion 11a at the tip is projected from the outlet 2a along the wire receiving groove 2 of the inclined body portion 2 '. The compression hole 6 of the compression sleeve 5 is fitted into the portion 11a, and the lower end of the compression sleeve 5 is fitted into the sleeve fitting groove 4 to form a continuous structure. The compression sleeve 5 is formed by using a compression tool (not shown) separately attached to the manipulator.
a is compressed at regular intervals in the longitudinal direction to grip the bare wire portion 11a of the electric wire 11.

In this way, after the compression sleeve 5 is fitted and continuously provided to the clamp body 1, the back tension preventing means 7 attached to the clamp body 1 side is provided with the L-shaped support piece 8 as the base point of the support shaft 8a. By rotating the hook 8 so that the hooked portion 8b at the tip faces the upper portion of the compression sleeve 5, the locking bolt 9 screwed into the hooked portion 8b is properly extended, and the lower end 9a thereof is brought into contact with and fixed to the compression sleeve 5 ( This abutment adjustment is done with the locking bolt 9
However, even if the compression sleeve 5 is pushed up due to back tension, the upper end is restricted and is immobile. That is, the compression sleeve 5 is prevented from coming off.

Next, the clamp body 1 having the compression sleeve 5 integrated therein is attached to the insulator connecting portion 3 on the other end side of the clamp body 1.
Is locked to the insulator 14 connected to the arm pole 13 on the side of the electric pole, the distribution line is retained (see FIG. 6).

Further, in this case, the shape of the cotter pin 15 used as the lateral insertion through the connecting hole 3a of the insulator connecting portion 3 is modified so that the cotter pin structure using a conventional split pin is modified so as to be suitable for manipulator operation. If a plurality of locking leaf springs 16 that open like an umbrella are arranged in the shape of an arrow at the tip of the pin shaft portion 15b in which the grip portion 15a is arranged, the conventional operation of inserting the split pin after inserting the cotter pin In contrast to the case where the locking plate spring 16 is required, simply inserting the locking plate spring 16 into the connecting hole 3a of the insulator connecting portion 3 causes the locking plate spring 16 to automatically open after passing through the hole, so-called spring locking. It is a one-touch operation, which makes it easy to mount on the manipulator and does not fall out.

7 to 9 show another embodiment of the back tension preventing means.
In the above configuration, the upper part of the inclined body portion 2'of the clamp body 1 is used as the bulging support portion 17, and the sleeve seating member is provided in the sleeve fitting groove 4 having the outlet portion 2a arranged in the bulging support portion 17. 1
8 are fitted, and both side portions of the seat member 18 are screwed and locked from both sides of the bulging support portion 17 by laterally inserting stop screws 19, and projecting above the seat member 18. A male screw 21 formed at the lower end of the cylindrical compression sleeve 5 is screwed onto the female screw 20 of the sleeve receiving portion 18a to form a detachable integral structure. That is, in this case, the bare wire portion 11a of the electric wire 11 which is inserted into the electric wire receiving groove 2 of the clamp body 1 and which is previously stripped of the coating is passed through the outlet portion 2a of the sleeve fitting groove 4 and the sleeve of the seating member 18. Lead to the receiving part 18a, and the bare wire part 11
Insert a through the compression hole 6 of the compression sleeve 5 connected to the sleeve receiving portion 18a. In this state, the outer circumference of the compression sleeve 5 is compressed and gripped by using a predetermined compression tool as described above.

Also in this embodiment, since the compression sleeve 5 is screwed to the clamp body 1 side and is substantially integrated, even if back tension occurs during use, the compression sleeve 5 has its base end fixed to the stopper screw 19. It does not move due to locking and is immobile.

FIGS. 10 to 12 show another embodiment in which a main wire and a jumper wire are used with one electric wire drawn through. In this case, the compression sleeve 5 is formed as a jumper wire drawing / compression sleeve 23 in which a wire guide opening 22 is provided in the longitudinal direction on the side surface so that the compression sleeve 5 has a C-shaped cross section, and one end of the jumper wire drawing / compression sleeve 23 is formed. (Lower end) is the sleeve fitting groove 4 at the upper end of the inclined body 2'of the clamp body 1.
To fit. That is, the jumper wire pull-out / compression sleeve 23 has a tubular shape with a C-shaped cross-section as a whole, and the inner portion of the wire guide opening 22 serves as the compression hole 6.

In this embodiment, the wire receiving groove 2 of the clamp body 1 is used.
The introduction of the electric wire 11 with respect to is similar to the above. In the continuous electric wire 11 led out from the electric wire outlet 2a, a predetermined portion of the coating is stripped off by a known coating wire stripping tool, and the exposed bare wire portion 11a is stripped off. Pulling the jumper wire through the guide opening 22 and compressing sleeve 2
The bare wire portion 11a is gripped by pushing it into the penetrating portion 3 and putting the compression portion 23a into a compressed state using a predetermined compression tool.

In this way, the portion of the electric wire 11 led out from the jumper wire pull-out / compression sleeve 23 becomes a jumper wire portion 11 ', and a part of this jumper wire portion 11' is used as a pin insulator 24 standing on the armor 13. The other end of the jumper wire portion 11 'is locked, and the tip end of the jumper wire portion 11' is made to face the jumper wire pull-out / compression sleeve 23 of the other clamp body 1 to be used.

[0023]

As described above, the manipulator construction aspect of the present invention has a combination structure in which a clamp main body for guiding an electric wire and a compression sleeve are continuously provided at the electric wire receiving groove end of the clamp main body. The electric wire (bare wire portion) to be held can be surely gripped only by compressing the compression sleeve, and the manipulator (robot) work becomes possible. In other words, this detention clamp does not have a work step of driving a wedge body unlike the conventional detention clamp, and can hold the electric wire by holding only the compression sleeve with a hydraulically driven tool to provide a holding force. It is suitable for remote work by manipulators because there is no directionality of the insertion work. Moreover, the top (upper end) of the compression sleeve is exposed to the back tension preventive means protruding from the main body side, or the back end preventive means for fixing the base end of the compression sleeve to the clamp main body side is provided, so that the electric wire Even if back tension is applied, the compression sleeve part will not come out. Further, if a C-shaped compression sleeve is used in which one side of the compression sleeve has an opening for guiding the electric wire, there is an effect such that a so-called pulling mode in which the main wire and the jumper wire use one main wire without cutting the electric wire.

[Brief description of drawings]

FIG. 1 is a side view of an electric distribution detention clamp according to a manipulator construction method according to an embodiment of the present invention.

FIG. 2 is a plan view of the main part.

FIG. 3 is a plan view of the back tension preventing means.

FIG. 4 is a side view of the clamp body.

FIG. 5 is a front view of the same.

FIG. 6 is an explanatory diagram of a retaining and using state.

FIG. 7 is a plan view showing another embodiment of the back tension preventing means.

FIG. 8 is a side view of the same.

FIG. 9 is a front view showing the main part.

FIG. 10 is an explanatory view of a usage state showing another embodiment of the compression sleeve.

FIG. 11 is a side view showing a main part of the compression sleeve.

FIG. 12 is a front view of the compression sleeve.

FIG. 13 is an explanatory diagram in which a partial coating of the electric wire is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp main body 2 Reverse U-shaped electric wire receiving groove 2'Inclined body portion 3 Insulator connecting portion 4 Sleeve engaging groove 5 Compression sleeve 7 Back tension preventing means 8 L-shaped support piece 9 Locking bolt 11 Electric wire 18 Sleeve seating member 19 Set screw

Claims (4)

[Claims] 1. An integrally formed clamp body having an inverted U-shaped electric wire receiving groove for inserting an electric wire at one end and an insulator connecting portion at the other end, and an outlet of the electric wire receiving groove. The compression sleeve that compresses the bare wire part of the wire end that passes through the wire receiving groove that is connected to the sleeve fitting groove that is provided on the back side, and the back tension prevention means that locks a part of the compression sleeve are arranged on the clamp body side. The detention clamp for distribution of a manipulator construction method characterized by the following. 2. An integrally formed clamp body having an inverted U-shaped electric wire receiving groove for inserting an electric wire at one end and an insulator connecting portion at the other end, and an outlet portion of the electric wire receiving groove. A manipulator construction method comprising: a jumper wire with a C-shaped cross section for compressing a bare wire part of an electric wire passing through an electric wire receiving groove continuous with a sleeve fitting groove provided in An embodiment of a strain relief clamp for power distribution. 3. The power distribution for manipulator construction method according to claim 1, wherein the back tension preventing means comprises an L-shaped support piece projecting from the clamp body and a locking bolt for holding the upper end of the compression sleeve mounted on the hooked portion. Tow clamp. 4. The strain retention clamp for power distribution according to claim 1, wherein the back tension preventing means is a seat member that allows a compression sleeve end screwed to a sleeve fitting groove of the clamp body to be detachable.