JP2670684B2 - Wire and sleeve compression connection device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal sleeve such as a connecting sleeve for connecting electric wires to each other, or a connecting sleeve of an anchor clamp for anchoring an end of an electric wire to a tower. , A device for compression connection to an electric wire, and particularly, a pair of opposing electric wire supporting means for supporting an electric wire equipped with a sleeve on both sides, and a compression-release-movement operation between the pair of electric wire supporting means. It is equipped with a hydraulic compressor that moves sequentially along the sleeve while repeating, and whether or not the width between the two compression surfaces of the sleeve compressed by each compression operation has reached a predetermined dimension is measured each time. The present invention relates to a compression connecting device equipped with a measuring device for storing and displaying this.

(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, conventionally, a special structure has been adopted for confirming each time whether or not the compression of the sleeve is exactly performed according to the dimension, or for recording the progress of the compression operation for later. Absent.

Therefore, according to the present invention, the sleeve does not warp due to compression, and the size can be reduced. Further, the width between the two surfaces of the compression portion of the sleeve is measured for each compression, and the result is stored. It is intended to provide a compression connection device capable of confirming the propriety of each compression operation each time by displaying and recording the progress of the compression operation for later.

(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 a pair of hydraulic heads 12 and 12 arranged to face each other in order to horizontally compress the sleeve S from both sides in the direction orthogonal to the axis thereof, and a measuring means for measuring the compressed width across flats of the sleeve S. And 20. And measuring means
Reference numeral 20 includes a base plate 21 that is horizontally fixed to the hydraulic compressor 4 and that has a stopper 21a that projects upward, and a gap 22a that penetrates the stopper 21a so that the stopper 21a can move relatively.
A frame body 22 provided with a rigid plate 22b and a receive plate 22c that are provided so as to be movable in a predetermined range in the direction orthogonal to the axis of the sleeve S until they come into contact with the end portion of a, and that face up on both sides and extend upward. And a screw rod 24 that is horizontally installed between the rigid plate 22b and the receive plate 22c and is rotated by the stepping motor 23.
Is located between the rigid plate 22b and the receive plate 22c, is screwed into the screw rod 24, and is movable in a predetermined range in the direction orthogonal to the axis of the sleeve S with the contact position with the stopper 21a as the original position. Provided moving plate
25, a first contact 26 electrically insulated from the inside of the rigid plate 22b, and electrically insulated so that it can abut one surface of the compression portion of the sleeve S inside the receive plate 22c. The second contact 27 provided on the moving plate 25 and the third contact 28 provided on the moving plate 25 in an electrically insulated manner so as to come into contact with the first contact 26, and the sleeve S on the moving plate 25. It is provided so as to be electrically insulated so as to be able to come into contact with the other surface of the compression part of the above, and is provided so as to be brought into contact with the first contact 26 away from the sleeve S in the original position. 4th contact 29 and hydraulic compressor 4
After completing each compression operation and moving, the stepping motor 23 is rotated until the second contact 27 and the fourth contact 29 come into contact with the two surfaces of the compression part of the sleeve S, and thereafter, the contacts 26, 2
Stepping motor 23 until 7,28,29 return to original position
Is controlled to rotate in reverse, and the stepping motor 23
The control device for calculating, storing and displaying the width across flats of the compression portion of the sleeve S is calculated from the number of forward rotations.

(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. Further, when each compression operation ends and the hydraulic compressor 4 completes the movement for the next compression, the stepping motor 23
Moves forward, moving plate 25 and frame at the original position
22 is moved until the fourth contact point 29 or the second contact point 27 comes into contact with the two surfaces of the compression portion of the sleeve S, respectively. Then, the controller calculates the width between two surfaces of the compression portion of the sleeve S by the rotation speed of the stepping motor 23 during this period, stores the width, and displays it by an appropriate method such as a display.
Therefore, the compression result can be confirmed every time each compression operation is performed, and the progress of the compression work can be referred to for several days.

(Embodiment) An embodiment of the present invention is shown in FIGS. 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, FIG. 8 is a plan view of the other electric wire supporting means, FIG. 9 is a perspective view of the measuring device, and FIG. FIG. 4 is a schematic front view showing the operation of the measuring device.

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.

The other electric wire supporting means 3 is, as shown in FIGS. 7 and 8, a column 3a pivotally attached to the pedestal 1 at its lower end, and a pulling clamp attached to the end of the electric wire W. And a bracket 3b capable of receiving the puller S1 of the sleeve S and holding the puller S1 with the pin 3c. A projecting piece 3d that extends horizontally in the axial direction of the electric wire W is provided at the bottom of the column 3a.
A spring receiving pin 3e is provided so as to vertically pass through 3d. The spring receiving pin 3e is pivotally mounted on the pedestal 1 at its lower end so as to be swingable, and the spring 3f is provided between its upper end and the projecting piece 3d.
Is interposed. Therefore, the wire support means 3 is
When is extended in the axial direction, it can be swung in the axial direction following this, and can be returned to the original position by the force of the spring 3f.

As shown in FIGS. 9 and 10, the hydraulic compressor 4 includes a measuring means 20 for measuring the width between the compressed two surfaces of the sleeve S.
Is provided.

That is, the measuring means 20 is supported by the base plate 21 which is horizontally fixed to the lower frame 10 of the hydraulic compressor 4. The substrate 21 includes a stopper 21a protruding upward. A frame body 22 is provided on the substrate 21 so as to be movable in a predetermined range in a direction orthogonal to the axis of the sleeve S. That is, the frame body 22 is provided with the gap 22a that penetrates the stopper 21a so as to be relatively movable, and can move in the direction orthogonal to the axis of the sleeve S until the stopper 21a contacts both ends of the gap 22a. Also, the frame 22
Includes a rigid plate 22b and a receive plate 22c that face each other on both sides and extend upward. A screw rod 24 rotated by a stepping motor 23 is provided between the rigid plate 22b and the receive plate 22c.
However, it is laid horizontally. Moving plate 25
It is located between the rigid plate 22b and the receive plate 22b and is screwed to the screw rod 24 so as to be movable within a predetermined range in the direction orthogonal to the axis of the sleeve S with the contact position with the stopper 21a as the original position. ing. Rigid plate
Inside the 22b, there is a first contact 26 and also the receive plate 2
Inside the 2c, the second contacts 27 are attached to the plates so as to come into contact with one surface of the compression portion of the sleeve S while being electrically insulated from the plates. Also, moving plate 25
A third contact 28 is provided on the upper side of the plate so that it can contact the first contact 26 at its original position, and a fourth contact 29 can be contacted with the other surface of the compression portion of the sleeve S at the end of the movement. , Is electrically insulated from the other.
The first contact 26 and the sleeve S set in the device are grounded, and the second, third and fourth contacts are connected to each other.
A predetermined voltage is applied to the contacts 27, 28, 29, respectively. Then, when the second contact 27 and the fourth contact 29 are both grounded (FIG. 10C), the control device stops the normal rotation of the stepping motor 23, and the sleeve S is compressed from the number of revolutions up to that point. Calculate the width between the two surfaces and store this,
It is supposed to be displayed. Further, the control device then reversely rotates the stepping motor 23 to return the moving plate 25 to the original position (FIG. 10D) where it abuts on the stopper 21a, and at the same time, moves the frame 22 to the first contact 26 and the third contact 28. It is assumed that the stepping motor 23 is returned to the original position (Fig. 10E) where and abut, and the reverse rotation of the stepping motor 23 is stopped when the third contact 28 is grounded.

When the sleeve S of the detention clamp is compression-connected to the electric wire W 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 opened. First, 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 held by the holding portion 14b of the electric wire supporting means 2. Next, the upper frame 11 is fitted on the heads 12, 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.

Also, when each compression operation ends and the hydraulic compressor 4 completes the movement for the next compression, as shown in FIG. 10B,
The stepping motor 23 starts rotating to rotate the screw rod 24 in the normal direction, and moves the moving plate 25 at the original position to the right to the position where the fourth contact point 29 contacts the one surface of the compression portion of the sleeve S. The stepping motor 23 continues to rotate to move the frame body 22 to the position shown in FIG. 10C at which the second contact 27 comes into contact with the other surface of the compression portion of the sleeve S.
And when the fourth contacts 27, 29 are both grounded via the sleeve S, stop rotation. Then, the control device calculates the width between the two surfaces of the compression portion of the sleeve S by the rotation speed of the stepping motor 23 during this period, stores the width, and displays it by an appropriate method such as a display. Therefore, it is possible to check the compression result for each compression operation, and to refer to the progress of the compression operation at a later date. Then, the stepping motor 23 is rotated in the reverse direction, and first the moving plate 25 is
It is returned to the position (original position) in FIG. 10D where it abuts the stopper 21a, and the frame 22 is further moved to the position (original position) in FIG. 10E where the first contact 26 abuts the third contact 28. 3rd contact
When 28 is grounded via the first contact 26, it stops rotating and enters a standby state. The series of operations described above is repeated each time compression is performed, and the width across flats of the compression portion of the sleeve S is measured.

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 sleeve of the detention clamp. Further, the measuring means 20 is the hydraulic compressor 4
Since it is provided on the opposite side to the advancing direction during the series of compression operations, it is necessary to appropriately change the mounting position to the hydraulic compressor 4 to the right or left in FIGS. 1 and 2 depending on the advancing direction. is there.

(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 the sleeve compression connection device in which the hydraulic compressor 4 movable along the sleeve S and the movable compressor 4 are provided on the gantry 1 while repeating the operation of compression-release-movement in between, the hydraulic compressor 4 is provided with the sleeve S. A pair of hydraulic heads 12 and 1 arranged to face each other in order to compress horizontally from both sides in the direction orthogonal to the axis.
2 and measuring means 20 for measuring the compressed width across flats of the sleeve S. The measuring means 20 is fixed horizontally to the hydraulic compressor 4 and has a stopper 21 protruding upward.
A substrate 21 provided with a and a gap 22a for penetrating the stopper 21a in a relatively movable manner are provided so that the stopper 21a can move within a predetermined range in the direction orthogonal to the axis of the sleeve S until the stopper 21a abuts on the end of the gap 22a. In addition, the rigid plate 22b and the receive plate 2 that face upward on both sides and extend upward
2, a frame 22 provided with 2, a screw rod 24 horizontally installed between the rigid plate 22b and the receive plate 22c, and rotated by the stepping motor 23, and between the rigid plate 22b and the receive plate 22c. Inside the rigid plate 22b and the moving plate 25 which is screwed to the screw rod 24 and is movable in a predetermined range in the direction orthogonal to the axis of the sleeve S with the contact position with the stopper 21a as the original position. The first contact 26, which is electrically insulated, and the sleeve S inside the receive plate 22c.
On the moving plate 25 and the second contact 27, which is electrically insulated so as to come into contact with one surface of the compression part of
The third contact 28, which is electrically insulated so as to be able to contact the first contact 26, is electrically connected to the other surface of the compression portion of the sleeve S on the moving plate 25. The electrically-insulated fourth contact 29 and the hydraulic compressor 4 are provided so as to be insulated from the sleeve S and come into contact with the first contact 26 at the original position. After the completion and movement, the stepping motor 23 is rotated until the second contact 27 and the fourth contact 29 come into contact with the two surfaces of the compression portion of the sleeve S, and thereafter, the contacts 26, 27, 28 and 29 are moved to their original positions. Since the stepping motor 23 is controlled so as to rotate in the reverse direction until it returns to the normal state, and the width across flats of the compression portion of the sleeve S is calculated from the number of forward rotations of the stepping motor 23 and stored and displayed, The compression is mounted on a pair of horizontal hydraulic heads 12,12. The dice 6,6 was,
It is possible to perform horizontal deformation from both sides at the same time so that the compression deformations on both sides of the sleeve S are made substantially equal to prevent warpage of the sleeve S due to compression, and as a result, a highly reliable connection can be obtained, and by each compression operation. Whether or not the width between two surfaces of the compressed portion of the compressed sleeve S has a predetermined dimension can be automatically measured by the measuring means 20 each time and stored and displayed. It is possible to confirm whether or not the compression state is appropriate during the work, or save the data as data for later reference.

[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 plan view of the electric wire supporting means, FIG. 9 is a perspective view of the measuring device, FIG. 10 is a schematic front view showing the operation of the measuring device, and FIG. 11 is a 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, 20 …… Measuring means, 21 …… Boards, 21a …… Stoppers, 22 …… Frames, 22a …… Gap, 22b
...... Rigid plate, 22c …… Receive plate, 23
...... Stepping motor, 24 …… Screw rod, 25 …… Moving plate, 26 …… First contact, 27 …… Second contact, 28 ・ ・ ・
… 3rd contact, 29 …… 4th contact, S …… sleeve, W ……
Electrical wire.

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 on the pedestal with the hydraulic compressor of, the hydraulic compressor has a pair of hydraulic pressures arranged to face each other in order to horizontally compress the sleeve from both sides in a direction orthogonal to the axis thereof. A head and a measuring unit for measuring the compressed width across flats of the sleeve are provided, and the measuring unit has the following configuration. A base plate that is horizontally fixed to the hydraulic compressor and that has a stopper that projects upward; and a gap that allows the stopper to penetrate relatively movably,
A frame body provided with a rigid plate and a receive plate which are provided so that a stopper can move within a predetermined range in the direction orthogonal to the axis of the sleeve until they come into contact with the ends of the gap, and which face upward on both sides of the sleeve. A screw rod that is horizontally installed between the rigid plate and the receive plate and that is rotated by a stepping motor, and that is located between the rigid plate and the receive plate and that is screwed into the screw rod and that has the stopper. A moving plate provided so as to be movable within a predetermined range in the direction orthogonal to the axis of the sleeve with the abutting position as the original position, and a first contact electrically insulated inside the rigid plate. Provided electrically insulated from the inside of the receive plate so as to come into contact with one surface of the compression portion of the sleeve. A second contact, a third contact provided on the moving plate so as to come into contact with the first contact and electrically insulated, and a second contact provided on the moving plate on the moving plate. A fourth contact, which is electrically insulated so as to come into contact with one surface, and which is electrically insulated so that it can come into contact with the first contact while being separated from the sleeve at the original position; After the hydraulic compressor has completed each compression operation and moved, the stepping motor is rotated until the second contact and the fourth contact come into contact with the two surfaces of the compression portion of the sleeve,
After that, the control device controls the stepping motor to rotate in the reverse direction until each contact returns to the original position, and calculates and stores and displays the width across flats of the compression portion of the sleeve from the number of forward rotations of the stepping motor.