JPH0759127B2 - Terminal fixing device for wire insulation protection tube - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal of a wire protection tube for fixing an end of an insulation protection tube attached to an erected wire to a wire or the like without directly touching the wire with an aerial work vehicle (bucket vehicle) or the like. It concerns a fixture.

[0002]

2. Description of the Related Art Conventionally, electric wires erected between utility poles are covered to protect them from damage at locations near trees or structures, or to prevent electric shock accidents during erection work. For this reason, an insulation protection tube is attached to the wire.
At that time, unless the end of the insulation protection tube attached to the electric wire is fixed to the electric wire, the insulation protection tube moves on the electric wire, so that the hooking tool is locked in the hole provided in the insulation protection tube, the string, You can bind the wire and the insulation protection tube with a rubber band, or you can wind a band-shaped piece in a spiral without using a hook and wind it around the wire, and then wrap the cord, rubber, etc. at one end around the insulation protection tube. The fixing measures that were taken were being taken. However, since all the conventional fixing means are manually operated at a high place on the overhead line, there is a risk of causing an electric shock disaster and the work is troublesome and extremely dangerous.

Also, two insulation protection tubes covered with electric wires
Connect them to each other and place these insulation protection tubes
For example, a pipe joint that can be fixed to an electric wire without causing
Known as described in Japanese Laid-Open Patent Publication No. 62-71414
It This pipe joint is insulated on the inside as shown in Figs.
A through hole 103 into which the protection tubes 102 and 102 'are fitted is provided.
The girder joint body 101 is attached to the front member 104 and the rear member 105.
And the front and rear members 104, 105
The upper end of the
Edges of the insulating protection tubes 102 and 102 'on the left and right ends of 103
A protrusion 109 for locking the collar 108 is provided, and the rear side
When the trapezoidal part 110 is provided on the lower part of the front surface of the member 105,
A vertical screw communicating with the through hole 103 in the base 110.
The hole 111 is provided and the electric wire tightening bolt 112 is screwed into
A locking claw 113 protruding from the tip of the trapezoidal portion 110,
A cover that faces the trapezoidal portion 110 is provided under the front member 104.
The bar piece 114 is extended and the cover piece 114 is provided with the locking claw.
Is formed by forming an engagement hole 115 for mooring 113
There is.

Before being closed as shown by the solid line in FIG.
Wires with the side member 104 open as shown by the chain line in FIG.
The front member 104 is returned to the position shown by the solid line in FIG.
The locking claw 113 is engaged with the engagement hole 115 to temporarily fix it, and
To the right and left ends of the through hole 103, the insulation
Insert the protection tubes 102 and 102 ', and insert the ends as shown in FIG.
Tighten the wire with the edge flange 108 locked to the protrusion 109
Tighten the bolt 112 to move the electric wire A to the upper part of the through hole 103.
It is pressed and fixed.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention JP-A-62-71
The pipe joint described in Japanese Patent No. 414 has a through hole into which an electric wire is inserted.
The joint body 101 provided with 103 is openably and closably connected.
The front member 104 and the rear member 105 are provided, and the through hole 1
Front part that is closed when the wire A is inserted into 03
After the material 104 and the cover piece 114 are once opened, the electric wire
A is inserted, and the front member 104 and the cover piece 114 are
To engage the engaging claw 113 with the engaging hole 115, and then
The trouble of screwing the wire tightening bolt 112 into the vertical screw hole 111
Sensitive operation is required.

For this reason, as shown in FIG.
The tortoise 112 is formed with butterfly bolts and the operating rod is inserted into its head.
A hole 116 is provided, and a hook portion at the tip of the operation rod is provided in this insertion hole 116.
And tighten the wire tightening bolt 112 by turning the operating rod.
Even if it is attached, many hands other than this tightening
There is work, and complicated operations are required. Therefore, according to the present invention, all the work of fixing the electric wire protection tube and the electric wire to such an aerial work using an aerial work vehicle (bucket car) or the like without directly touching the electric wire or the like is performed by operating the operation rod. in-out de easy <br/>, it has an object to provide a terminal fixture that prevents electric shock accidents.

[0007]

The terminal fixing device of the present invention comprises:
Horizontal arm portions are respectively projected at both ends of the main trunk to form a side-body-shaped main body member, and a screw rod that rotates in parallel with the main trunk is screwed into the horizontal arm portion below the main body member to form an upper end of the screw rod. A hook for holding the outer surface of the electric wire insulation protection tube on the upper horizontal arm portion by making the electric wire holding portion open between the upper horizontal arm portions on the outside.
A pair of hook-shaped arm pieces project in the direction parallel to the wire insulation protection tube.
The bottom edge of each hook arm on both sides.
Each of the arc-shaped restraining pieces to be brought into contact with the outer surface of the air insulation protection tube is
The latch arm is provided so as to project orthogonally, and the lower end of the screw rod is provided with a locking bowl-like body that locks the operation rod in a disengageable manner .

[0008]

[Function] The tip of the operating rod is locked to the locking bowl-shaped body provided at the lower end of the main body part, and the operating rod is pushed up from above the work vehicle at a height so as to contact the electric wire position and opened outside the main body member . With the electric wire being held by the electric wire holding portion, the hook-shaped portion at the tip of the holding arm piece is hooked on the end of the electric wire insulation protection tube attached to the electric wire. After that, by rotating the operating rod and clamping and fixing the wire with the wire clamping part formed by the upper and lower horizontal arm parts , the ends of the wire insulation protection tube are made orthogonal to both sides of the latch arm piece. The arc-shaped restraining piece provided restrains the outer surface of the electric wire insulation protection tube and fixes it firmly. When the work of fixing the electric wire insulation protection tube and the electric wire is completed, the operation rod is removed from the locking bowl .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes horizontal arm portions 3 and 4 at both upper and lower ends of a main trunk 2.
Is a main body member that is formed into a U-shaped side face by projecting, and the main body 2 is a screw rod 5 below which a square screw is provided on a horizontal arm portion 4.
It is screwed so as to be rotated in parallel with, and a receiving piece 6 having a concave upper surface is fixed to the upper end of the screw rod 5. Then, the lower surface of the upper horizontal arm portion 3 also has a concave arc shape, and the space between the opposed concave arc surfaces is
The electric wire holding portion 7 is opened outside . In addition, the wire insulation protection tube 13 held by the wire holding portion 7 in the upper horizontal arm portion 3
A pair of latching arm pieces 8 are projected in the parallel direction. A restraining piece 9 having a lower end edge of an arcuate concave curved surface is provided in a direction orthogonal to each of the latching arm pieces 8 near the tip of the lower surface of the latching arm pieces 8. Then, the lower end of the threaded rod 5 by attaching the locking bowl-shaped body 10 of cylindrical shape which is open at the lower surface, engaging the bowl-shaped body 10
T-shaped locking grooves 11, 11 that open at the lower end are formed on the side surfaces of the opposite sides.

Next, the use of the terminal fixture A thus constructed will be described. In FIG. 3, reference numeral 12 denotes an electric wire laid on a utility pole or the like, to which an electric wire insulation protection tube 13 made of synthetic resin and having a cylindrical shape is attached. The protection tube 1
The collar portion 14 is formed around the terminal of No. 3. On the other hand, 15
Is a long rod- shaped operating rod made of an insulating material, the tip of which has a thickness that allows it to be inserted into and removed from the locking bowl-shaped body 10, and the outer peripheral surface of which engages with the locking grooves 11, 11. Engagement pins 16 and 1 for mating
6 is projected .

First, with the screw rod 5 of the terminal fixture A loosened to lower the position of the receiving portion 6 and the electric wire holding portion 7 expanded, the operating rod 1
5, the engaging pins 16, 16 provided at the tip of the engaging groove 11,
11 to engage, further locking groove 1 the engagement pin 16, 16
1,11 and is rotated such that the right angle, the operating rod 15
Support the terminal fixture A so that it will not fall off and
The work stick 15 is raised higher than the aerial work vehicle and the terminal fixture A
The electric wire 12 is clamped to the wire clamping portion 7 which is open on the outside of,
Moving the terminal fixture A together with the operation rod 1 5 in this state is proximity to the wire insulation protective tube 13, hooked Kaketomeudehen 8,8
And the arc-shaped restraining pieces 9 and 9 restrain the surface of the protective tube 13. Then, the operation rod 15 is rotated and the screw rod 5 is tightened, whereby the electric wire 12 is clamped and fixed to the electric wire clamping portion 7. When the work of fixing the wire insulation protection tube 13 and the terminal fixture A is completed, the operation rod 15 is rotated to engage the engagement groove 1 of the engagement bowl-shaped body 10.
Align the engaging pins 16 and 16 of the operating rod 15 with
Te, remove the operating rod 15 is taken from the locking bowl-shaped body 10.

The terminal fixture A attached in this way
At the same time that the electric wire 12 is clamped and fixed to the electric wire clamping portion 7 as shown in FIG. 2, the hook-shaped portions of the hooking arm pieces 8 and 8 are attached to the flange portion 14 of the end of the electric wire insulation protection tube 13. locked, further its
The lower end edge of is restrained by the restraining pieces 9 and 9 having an arcuate curved surface, and is firmly fixed.

FIG. 4 shows an example of use in the case where the pipe joint 17 is connected to the electrical insulation protection pipe 13. In this case as well, it can be used in the same manner as the electric insulation protection tube 13 described above, and the outer surface of the trumpet tube portion 18 formed at the end of the pipe joint 17 is provided with hook-shaped hooking arm pieces 8, 8 and arc-shaped. The restraining pieces 9 and 9 of FIG.

[0014]

As described above, in the terminal fixing tool of the present invention, all operations for fixing the electric wire insulation protection tube and the electric wire at the terminal of the electric wire insulation protection tube can be performed directly by using an aerial work vehicle or the like. this subjected to any of the fault via the operating rod without touching the hand
Since it is possible to perform good workability easily without having, it is possible to completely eliminate the accompanying danger to electric shock disaster.

[Brief description of drawings]

FIG. 1 is a side view of a terminal fixing tool.

FIG. 2 is a front view of a terminal fixing tool.

FIG. 3 is a perspective view showing a usage state.

FIG. 4 is a perspective view showing another usage state.

FIG. 5 is a side view showing a conventional example of a pipe joint.

FIG. 6 is a cross-sectional view showing a usage state of the same as above.

[Explanation of symbols]

1 main body member 2 main body 3,4 horizontal arm portion 5 screw rod 7 electric wire holding portion 8,8 latching arm piece 9,9 restraining piece 10 locking bowl 15 operating rod

Claims (1)

[Claims] 1. A main body member having a lateral U-shape is formed by projecting horizontal arm portions at both ends of the main trunk, and a screw rod rotating parallel to the main trunk is screwed into the horizontal arm portion below the main body member. a wire clamping portion which is open on the outside between the horizontal arms of the upper end and the upper screw bar, wire insulation hooked hooking arm pieces that hooked the outer surface of the wire insulation protection tube to the horizontal arm of the upper Parallel to the protection tube
A pair of protrusions in each direction, and on both sides of each hook arm piece,
An arc shape with its lower edge abutting the outer surface of the electrical insulation protection tube
The suppression piece projecting from the perpendicularly to the respective latching arm piece, the threaded rod lower end to the operating rod engagement detachably engaged is provided a locking bowl-shaped body composed of wire insulation protective tube to the Terminal fixture.