JP2670682B2 - Wire and sleeve compression connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connecting sleeve for connecting electric wires to each other, and a metallic sleeve such as a pulling sleeve for holding an end of an electric wire to a steel tower. And a pair of opposed electric wire supporting means for supporting the electric wire fitted with a sleeve on both sides, and a repetitive operation of automatically compressing, releasing and moving between the pair of electric wire supporting means. And a hydraulic compressor that moves along the sleeve while at least one of the electric wire supporting means is swingable so as to allow displacement of the electric wire in the direction orthogonal to the axial line due to compression, and can return to the original position. The present invention relates to a compression connecting device configured as described in 1.

(Prior Art) Conventionally, a manual device for compressively connecting an electric wire and a sleeve is known. In this device, a pair of opposed electric wire supporting means for supporting the electric wire with a sleeve mounted thereon in a substantially horizontal direction is provided on a frame, and a hydraulic compressor is provided so as to be reciprocally movable between the pair of electric wire supporting means. Is manually movable via a chain or the like. For example, in a state where the end portions of two electric wires to be connected are inserted into the sleeve from both sides, both electric wires are held by the electric wire supporting means on both sides of the sleeve. The sleeve is arranged between a pair of dies of the hydraulic compressor, and the hydraulic compressor is repeatedly compressed, released and moved to perform compression for a predetermined length. As shown in FIG. 9, the hydraulic compressor used for this is a vertical type, and among the dies A and B facing each other vertically, the upper one is fixed and the lower one is B. Only the hydraulic pressure is used for compression.

(Problems to be Solved by the Invention) In the above-described conventional wire connecting sleeve compression device, since the die is of the one-side driving type, the compression deformations of the sleeve due to the fixed die A and the moving die B are different from each other. The sleeve is warped, and not only is it difficult to correct it, but also the warp and its correction may impair the connection strength. Further, for example, when the electric wire and the sleeve set in the compression device are bent, the center between the dies of the hydraulic compressor does not coincide with the center of the electric wire and the sleeve, and the compression operation is performed in this state. When,
There is a phenomenon that the wire and sleeve are moved horizontally by being pressed by the die. On the other hand, conventionally, since the wire support means is fixed on the pedestal, when the wire and the sleeve are moved in the axial orthogonal method by the compression operation, this movement is performed by bending the wire between the wire support means. Is absorbed by. For this reason, there is a problem in that the electric wire supporting means is unduly stressed and is easily damaged, and if the distance between both electric wire supporting means is increased to avoid this stress, the device becomes large.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a compression connecting device which does not warp a sleeve due to compression, and does not apply an unreasonable stress to the device during a compression operation and which can be miniaturized. It is a thing.

(Means for Solving the Problem) In the present invention, in order to solve the above-mentioned problem, a pair of electric wire supporting means 2 and 3 facing each other for supporting the electric wire W having the sleeve S mounted substantially horizontally on both sides, and a pair of these electric wire supporting means 2 and 3 are provided. In the sleeve compression connection device in which the hydraulic compressor 4 movable along the sleeve S while repeating the compression-release-movement operation between the electric wire supporting means 2 and 3, is provided on the pedestal 1, the hydraulic compressor 4 is provided. Is provided with a pair of hydraulic heads 12, 12, and these hydraulic heads 12 are arranged in a direction orthogonal to the moving direction of the hydraulic compressor 4 in order to compress the sleeve S horizontally from both sides in the direction orthogonal to its axis. A configuration is adopted in which at least one of the electric wire support means 2 is arranged so as to be swingable so as to allow displacement of the electric wire W in the direction orthogonal to the axial line due to compression, and to be urged so as to be able to return to the original position.

(Operation) In the compression device of the present invention, the electric wire W is supported by the electric wire supporting means 2 and 3 on both sides of the sleeve S while the end of the electric wire W is inserted into the sleeve S, and
Is disposed between a pair of dies 6, 6 of the hydraulic compressor 4, and is moved along the sleeve S in sequence while repeatedly performing compression-release-movement operation of the hydraulic compressor 4 to perform a predetermined length of compression operation. . The sleeve S is compressed by a pair of horizontal hydraulic heads 12,12.
Since the dies 6 are mounted on the both sides in the horizontal direction at the same time, the compressive deformations on both sides of the sleeve S become substantially equal, so that the sleeve S does not warp due to the compression. When the electric wire W and the sleeve S set in the compression device are bent, the center between the dies 6, 6 does not coincide with the center of the electric wire W and the sleeve S, and the compression operation is performed in this state. Then, a phenomenon occurs in which the wire W and the sleeve S are pushed by the die 6 and move in the horizontal direction. In such a case, the electric wire support means 2 swings to allow the movement of the electric wire W and the sleeve S, thereby reducing the stress applied to the electric wire support means 2.

(Embodiment) An embodiment of the present invention is shown in FIG. 1 to FIG. 1 is a plan view of the compression device, FIG. 2 is a front view of the compression device, and FIG.
FIG. 4 is an exploded perspective view of a hydraulic compressor, FIG. 4 is a perspective view of a die and a sensor, FIG. 5 is a front view of one electric wire supporting means, and FIG.
FIG. 7 is a side view of one electric wire supporting means, FIG. 7 is a front view of the other electric wire supporting means, and FIG. 8 is a plan view of the other electric wire supporting means.

The sleeve compression apparatus of the illustrated embodiment has a portable gantry 1 equipped with casters, and a pair of electric wire supporting means 2 provided on the gantry 1 so as to face each other to support the electric wire W on which the sleeve S is mounted. 3 and a hydraulic compressor 4 provided on the gantry 1 so as to be able to reciprocate between the pair of electric wire supporting means 2, 3.

A nut 8 is fixed to a lower portion of the hydraulic compressor 4, and the nut 8 is screwed to a screw rod 7 provided on the gantry 1. The screw rod 7 is rotatable by the motor 5. Accordingly, the hydraulic compressor 4 can reciprocate along the screw rod 7 by the forward and reverse rotation of the driving motor 5.

As shown in FIG. 3, the hydraulic compressor 4 includes a lower frame 10 having rollers 9 rolling on the gantry 1 and an upper frame having substantially the same shape.
11 and a pair of hydraulic heads 12 and 12 horizontally opposed to each other.
Holding. That is, a pair of rectangular engaging holes 10a, 11a are formed on both sides of the upper and lower frames 10, 11, respectively, while rectangular columnar engaging protrusions 12a, 12a are protruded above and below each head 12. ing. The engaging projections 12a are fitted into the engaging holes 10a and 11a of the upper and lower frames, respectively, so that the heads 12 and 12 are held so as not to be opened. The ram of each head 12 has a die receiver 12b to which the die 6 can be attached and detached.
Is provided. That is, the die receiver 12b has a U-shape in cross section, and a pair of opposing engaging projections 12c are fitted into the engaging grooves 6c of the die 6, and the die 6 can be inserted from above. It has become. Each of the compression heads 12 is supplied to the die 6 by oil supply from the hydraulic pump P.
Can be compressed.

As shown in FIG. 4, one of the dice 6 is provided with an identification portion 6a extending downward, and this identification portion 6a includes
An identification hole 6b is provided. Correspondingly, when the die 6 is mounted on the head 12, the identification portion 6a of the die 6 is received on the lower frame 10, and the die 6 is arranged by the arrangement of the holes 6b.
A photo sensor 17 for detecting the type of is provided. The type of the die 6 is identified by the arrangement combination of the holes 6b, and the automatic compression operation suitable for this can be performed. 6d is a handle for attaching and detaching the die 6.

A control device (not shown) having a built-in microcomputer is provided separately from the gantry 1, and receives a signal from the sensor 17 and stores a pre-stored compression pitch and a number of compressions peculiar to the sleeve S corresponding to the die 6. The hydraulic control valve 16 and the drive motor 5 are controlled.

As shown in FIGS. 5 and 6, one electric wire supporting means 2 is a movable table 13 which is movable along the frame 1 in the axial direction of the electric wire W.
And an electric wire supporting member 14 provided on the movable base 13 so as to be swingable. The moving table 13 includes rollers 13a for moving along the gantry 1. The wire support means 14 is a support that is pivotally attached at its lower end to the movable table 13 so as to be swingable.
14a and a gripping portion 14b for gripping the electric wire. Wings 14c extending horizontally on both sides in the direction orthogonal to the electric wire W are provided in the middle of the pillar 14a, and a spring 14d is provided between the wing 14c and the moving base 13. Therefore, the wire support member 14 is swingable and can be returned to the original position by the spring 14d. Therefore, the compression operation by the hydraulic head 12 is performed in a state where the centers of the dies 6 and 6 and the centers of the electric wire W and the sleeve S do not coincide with each other, and the sleeve S and the electric wire W move horizontally. In this case, the electric wire support means 2 follows and swings, and when the sleeve S and the electric wire W extend in the axial direction due to compression, the electric wire support means 2 moves in the same direction. Unnecessary stress is not applied to.

As shown in FIGS. 7 and 8, the other electric wire supporting means 3 has a column 3a pivotally attached to the pedestal 1 at its lower end and a pulling sleeve attached to the end of the electric wire W. It comprises a bracket 3b capable of receiving the puller S1 of S and holding it by a pin 3c. A projecting piece 3d extending horizontally in the axial direction of the electric wire W is provided below the column 3a, and a spring receiving pin 3e is provided so as to vertically pass through the projecting piece 3d. The spring receiving pin 3e is pivotally mounted on the pedestal 1 at its lower end so as to be swingable, and a spring 3f is provided between its upper end and the projecting piece 3d. Therefore, when the electric wire W extends in the axial direction, the electric wire supporting means 3 can follow the movement of the electric wire W in the axial direction and can be returned to the original position by the force of the spring 3f.

Then, when the retracting sleeve S is compression-connected to the electric wire W by using the compression device of this embodiment, the upper frame 11 of the hydraulic compressor 4 is removed and the heads 12 and 12 are left open.
The die 6 is selected according to the type of the sleeve S to be compressed, and this is mounted on the head 12. Then, with the sleeve S attached to the end of the electric wire W, one end of the sleeve S is connected to the bracket 3b of the electric wire supporting means 3 and the electric wire W is
Is gripped by the gripping portion 14b of the wire supporting means 2. Then
The upper frame 11 is fitted on the heads 12 and 12, and the hydraulic compressor 4 is set. Then, the hydraulic pump P is operated, and the power switch of the control device is turned on. Next, the hydraulic compressor 4 is moved to be arranged on one end side of the sleeve S.

The sensor 17 detects the type of the dice 6 from the identification unit 6a of the dice 6 mounted on the hydraulic compressor 4 and sends a signal to the control device. Based on the signal from the sensor 17, the control device drives the drive motor 5 and the control valve according to the compression pitch and the number of compressions stored in advance in the sleeve S corresponding to the die 6.
Control 16 to start compression operation.

During this time, the electric wire support means 2 moves and the electric wire support means 3 rocks with each compression, thereby allowing the electric wire W and the sleeve S to expand due to the compression. When the center between both dies 6 and the center of the electric wire W and the sleeve S do not coincide with each other during the compression operation, a phenomenon occurs in which the electric wire W and the sleeve S are moved by the die 6 in the horizontal direction. ,
The electric wire support means 2 swings in the direction orthogonal to the axis of the electric wire W against the spring force to allow the movement of the electric wire W and the sleeve S, thereby reducing the stress applied to the electric wire support means 2.

When one compression operation is completed and the oil pressure reaches a predetermined value, a signal is issued from the pressure switch, and a return operation signal is issued to the control valve 16 via the control device. Dice 6
When the hydraulic pressure in the head 12 reaches a predetermined value after the completion of the return operation, a signal is issued from the pressure switch, a rotation signal is issued to the drive motor 5 via the control device, and the motor 5 rotates a predetermined number of times. The hydraulic compressor 4 is moved by a predetermined distance. In this way, the same operation is repeated a predetermined number of times to complete the compression connection of the sleeve S.

In the case of compression by this compression device, since the sleeve S is compressed horizontally from both sides by the dies 6, 6 simultaneously,
The compression deformations on both sides of the sleeve S become substantially equal. Therefore,
Since no warping occurs in the sleeve S after compression, no correction is required, and the accompanying reduction in connection strength is avoided.

The present invention is not limited to the illustrated embodiment, but can be applied to, for example, a hydraulic compressor that is manually moved, and the subject of compression connection is not limited to the detention sleeve.

(Effects of the Invention) As described above, in the present invention, a pair of opposing wire supporting means 2, 3 for supporting the wire W with the sleeve S mounted substantially horizontally on both sides, and the pair of wire supporting means 2, 3 In a sleeve compression connecting device in which a hydraulic compressor 4 movable along a sleeve S while repeating compression-release-movement operations between them is provided on the gantry 1, a pair of hydraulic heads are provided in the hydraulic compressor 4. 12, 12 are provided, and these hydraulic heads 12 are arranged in a direction orthogonal to the moving direction of the hydraulic compressor 4 in order to horizontally compress the sleeve S from both sides in the direction orthogonal to its axis, and at least one of them is provided. Wire support means 2
Is employed so as to be swingable so as to allow the displacement of the electric wire W in the direction orthogonal to the axial line due to compression and urged so as to be capable of returning to the original position. With the dice 6,6 attached to 12,12,
It is possible to simultaneously perform the horizontal deformation from both sides to make the compressive deformations on both sides of the sleeve S substantially equal to prevent the warpage of the sleeve S due to the compression. As a result, a highly reliable connection can be obtained, and the sleeve can be set in the compression device. When the compression operation is performed in a state in which the centers of the electric wire W and the sleeve S and the dies 6 and 6 that have been pressed do not coincide with each other, the electric wire W and the sleeve S are moved by the dies 6 in the horizontal direction. Even if such a phenomenon occurs, the electric wire support means 2 follows and swings, allowing the movement of the electric wire W and the sleeve S. Therefore, the stress applied to the electric wire supporting means 2 can be reduced, and since it is not necessary to allow the electric wire W to bend, the electric wire supporting means 2,
The effect that the device can be downsized by reducing the space between the three as much as possible.

[Brief description of the drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a plan view of a compression device, Fig. 2 is a front view of the compression device, Fig. 3 is an exploded perspective view of a hydraulic compressor, and Fig. 4 is a die. And a perspective view of the sensor, FIG. 5 is a front view of one electric wire supporting means, FIG. 6 is a side view of one electric wire supporting means, FIG. 7 is a front view of the other electric wire supporting means, and FIG. FIG. 9 is a cross-sectional view of a conventional hydraulic compressor. 1 ... Frame, 2, 3 ... Electric wire supporting means, 4 ... Hydraulic compressor, 5 ... Motor, 6 ... Die, 7 ... Screw rod, 8 ...
… Nuts, 12… Heads, 14… Electric wire support members, 14a…
... Prop, 14b ... Grip, 14c ... Wing, 14d ... Spring, S
...... Sleeves, W ... electric wires.

Claims (1)

(57) [Claims] 1. A pair of opposed electric wire supporting means for supporting an electric wire fitted with a sleeve substantially horizontally on both sides, and freely movable along the sleeve while repeating compression-release-movement operations between the pair of electric wire supporting means. In the compression connection device of the sleeve provided with the hydraulic compressor of 1. on the gantry, the hydraulic compressor is arranged in a direction orthogonal to the moving direction in order to horizontally compress the sleeve from both sides in the direction orthogonal to the axis of the sleeve. A pair of opposed hydraulic heads, at least one of the electric wire supporting means is swingable so as to allow displacement of the electric wire in a direction orthogonal to the axial line due to compression,
A compression connection device for an electric wire and a sleeve, the compression connection device being provided so as to be capable of returning to an original position.