JP2881336B2 - Compression connection device for wire clamp - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a device for compressively connecting an aluminum end clamp for fixing both ends of an electric wire to a steel tower to an end of the electric wire, In particular, the present invention is characterized in that the steel core wire of the electric wire inserted into the sleeve of the retaining clamp during the compression work is not easily pulled out.

2. Description of the Related Art Conventionally, as a compression connection device for an electric wire anchoring clamp, for example, a device described in Japanese Patent Application Laid-Open No. 63-224171 is known. This device is provided with a pair of opposed clamp supporting means and an electric wire supporting means for supporting an electric wire having a retaining clamp mounted thereon substantially horizontally, and a hydraulic compressor is provided so as to be able to reciprocate between the pair of supporting means. It is a thing. This compression connection device, for example, in a state in which the sleeve of the clamping clamp is inserted at the end of the electric wire, while holding the clamping clamp by the clamp supporting means on one side, grasping the electric wire by the wire supporting means on the other side, and It is disposed between a pair of dies of a hydraulic compressor, and the hydraulic compressor automatically performs a repetition operation of compression-release-movement to perform compression of a predetermined length of the retaining clamp. In addition, since the holding position of the electric wire by the electric wire supporting means differs depending on the size of the retaining clamp, the electric wire supporting means can move on the gantry. Then, the operator moves the electric wire support means by hand in accordance with the size of the retaining clamp, and appropriately determines the position each time.

(Problem to be Solved by the Invention) In the above-mentioned conventional apparatus, as shown in FIG.
And the retaining clamp C are set between the dies 6 and 6 of the compressor, and the vibration and the electric wire W
The steel wire S may come off from the sleeve of the retaining clamp C due to the bending of the wire support means moving on the gantry. In addition, the steel core wire S may be pushed out of the sleeve of the retaining clamp C during the first compression operation. Therefore, conventionally, the worker has to support the electric wire until the first compression operation is completed. There was an inconvenience that the means had to be suppressed. Further, there is another problem that the selection of the wire support position of the wire support means is troublesome and tends to be inaccurate.

Therefore, according to the present invention, the wire support means can be fixed until the first compression operation is performed after the wire W and the retaining clamp C are set, and the selection of the support position of the wire support means is automatically performed. It is an object of the present invention to provide a compression connection device which can be performed in a short time.

(Means for Solving the Problems) In the present invention, in order to solve the above problems, the electric wire W
Clamp support means 3 for fixing the tip of a retaining clamp C attached to one end of the wire, wire support means 2 for supporting the wire W substantially horizontally opposed to the clamp support means 3, clamp support means 3 and the wire In a compression connection device of an anchor clamp provided with a hydraulic compressor 4 movable along an anchor clamp C on a gantry 1 while repeating a compression-release-movement operation between the support means 2 and an electric wire supporting means. 2 is
A rack 18 is provided so as to be freely movable with respect to the gantry 1 in a direction approaching to and away from the clamp supporting means 3, and a rack 18 extending along the moving direction of the electric wire supporting means 2, and a limit switch parallel thereto A guide bar 19 for rolling is provided,
Further, the wire support means 2 includes a pinion 16 which rotates while being engaged with the rack 18, an electromagnetic brake 17 for stopping the rotation of the pinion 16, and an electromagnetic brake 17 which detects a stop position mark 18 a on the guide bar 18. And the electromagnetic brake 17 releases the brake operation in response to a signal issued from the hydraulic compressor 4 when the first compression operation of the hydraulic compressor 4 is completed. To this end, it was electrically connected to the hydraulic compressor 4.

(Operation) In the compression connection device of the present invention, a guide bar having a stop position mark corresponding to the size of the retaining clamp C to be connected is attached to the gantry 1 in advance. Then, prior to the setting of the retaining clamp C and the electric wire W, the electric wire supporting means is manually moved to a predetermined position. At this time, when the wire supporting means is pushed, the pinion meshes with the rack and rotates, and the limit switch rolls on the guide bar. Then, when reaching the various positions, the limit switch detects the stop position mark of the guide bar, and the electromagnetic brake coupled to the pinion stops the rotation of the pinion. In this state, one end of the retention clamp is fixed to the clamp support member, and the steel core wire of the electric wire is inserted into the sleeve on the other end side.
Then, the electric wire is firmly held by the electric wire supporting means, and the hydraulic compressor is caused to perform a compressing operation. The hydraulic compressor moves along the retaining clamp while repeating the compression-release-movement operation to complete the compression of a predetermined length, but when the first compression operation of the hydraulic compressor is completed, the hydraulic compression is performed. A brake release signal is sent from the device to the electromagnetic brake. Upon receiving this signal, the electromagnetic brake releases the brake, and thereafter the wire support means is free to move. Therefore, after that, the necessary movement of the electric wire accompanying the compression is permitted.

(Embodiment) An embodiment of the present invention is shown in FIG. 1 to FIG. 1 is a plan view of the compression connection device, FIG. 2 is a front view of the compression connection device, FIG. 3 is a view taken along arrows III-III in FIG. 2, and FIG. 4 is a side view of the wire support means.

The compression connection device of the illustrated embodiment includes a movable base 1 equipped with casters, electric wire support means 2 provided on the base 1 for supporting the electric wires W, and an end mounted on the electric wire W. A clamp support means 3 provided on the gantry 1 for supporting the retaining clamp C, and a hydraulic compressor provided on the gantry 1 so as to be able to reciprocate between the pair of support means 2, 3 4 is provided.

As shown in FIG. 4, the electric wire support means 2 comprises a movable base 13 movable along the gantry 1 in the axial direction of the electric wire W, and an electric wire supporting member 14 erected on the movable base 13. . The moving table 13 includes a roller 13a for moving along the gantry 1. The wire support member 14 has a support 14a fixed to the movable base 13 at the lower end, and a gripper 1 for gripping the wire W.
4b. A limit switch is provided on the side of the moving base 13.
15 is attached, and a pinion 16 with an electromagnetic brake 17 is attached below. The rollers of the limit switch 15 are rotatable on a guide bar 18 provided on the gantry 1 so as to extend in the axial direction of the electric wire W. And
The stop position mark 18a, which is a recess on the guide bar 18, is sensed and a signal for operating the electromagnetic brake 17 is transmitted. The pinion 16 meshes with a rack 19 provided on the gantry 1 in parallel with the guide bar 18. When the electromagnetic brake 17 operates, the pinion 16 stops and fixes the wire support means 2.

The hydraulic compressor 4 has a pair of hydraulic heads 12 and 12 held between a lower frame 10 having rollers 9 that roll on the gantry 1 and an upper frame 11 having substantially the same shape as the lower frame 10. Each of the compression heads 12 can extrude the dies 6 by oil supply from a hydraulic pump P to perform a compression operation.

A nut 8 is fixed to a lower portion of the lower frame 10, and the nut 8 is screwed to a screw bar 7 laid horizontally 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.

A control device (not shown) incorporating a microcomputer is provided separately from the gantry 1 and controls the hydraulic control valve 20 and the drive motor 5 according to the information on the compression pitch and the number of compressions specific to the retaining clamp C stored in advance. Is controlled, and the compression operation of the retaining clamp C is performed.

Thus, using the compression connection device of this embodiment, the electric wire W
In the case where the retaining clamp C is to be connected by compression, first, a guide bar 18 corresponding to the dimension of the retaining clamp C is selected and fixed on the gantry 1. And electric wire supporting means 2
Is pushed toward a predetermined supporting position. When the wire support means 2 reaches a predetermined position, the roller of the limit switch 15 falls into the mark 18a of the guide bar 18, and sends a stop signal of the electromagnetic brake 17. The electromagnetic brake 17 operates according to the signal, and the pinion 16 stops. Thus, the wire support means 2 is fixed. Next, the upper frame of the hydraulic compressor 4
Remove 11 and open between heads 12 and 12. And the electric wire W
With the sleeve of the clamping clamp C inserted in the end of
After connecting one end of the retaining clamp C to the bracket of the clamp support means 3 and holding the electric wire W by the electric wire support means 2, the upper frame 11 is fitted onto the heads 12, 12, and the hydraulic compressor 4 is set. I do. Then, while operating the hydraulic pump P, the power switch of the control device is turned on, and the snow pressure compressor 4 is turned on.
Is moved to a predetermined position on one end of the retaining clamp C, and then the compression operation is started.

The hydraulic compressor 4 detects the type of the die 6 mounted on the hydraulic compressor 4 by a sensor, and according to the compression pitch and the number of times of compression specific to the holding clamp C corresponding to the die 6 stored in the control device in advance. Then, the control valve 20 is controlled to start the compression operation.

When one compression operation is completed and the hydraulic pressure reaches a predetermined value, a signal is issued from the pressure switch, a return operation signal is issued to the control valve 20 via the control device, and the electromagnetic brake 17 is released from the brake. A signal is emitted. When the die 6 completes the return operation and the oil pressure in the head 12 reaches a predetermined value, 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. Then, the hydraulic compressor 4 is moved by a predetermined distance. Thus, the same operation is repeated a predetermined number of times, and the compression connection of the end clamp C is completed. After one compression operation is completed, the electromagnetic brake 17 releases the pinion 16, so that the wire support means 2 can freely move, for example, following the axial expansion of the wire W accompanying the compression. Can be.

(Effects of the Invention) As described above, in the present invention, the clamp support means 3 for fixing the tip of the retention clamp C attached to one end of the electric wire W, and the electric wire W facing the clamp support means 3
And a hydraulic compressor 4 that can move along the retaining clamp C while repeating the compression-release-movement operation between the clamp support means 3 and the wire support means 2. In the compression connection device of the anchoring clamp provided on the gantry 1, the wire support means 2 is provided movably with respect to the gantry 1 in a direction approaching to and away from the clamp support means 3. A rack 18 extending in the direction of movement of the support means 2 and a guide bar 19 for rolling a limit switch in parallel with the rack 18 are provided. The wire support means 2 further includes a pinion 16 which meshes with the rack 18 and rotates. An electromagnetic brake 17 for stopping the rotation of the pinion 16 and a limit switch 15 for operating the electromagnetic brake 17 by detecting a stop position mark 18a on the guide bar 18; Rake 17, a hydraulic compressor 4
In order to release the brake operation in response to a signal issued from the hydraulic compressor 4 when the first compression operation of
Since the configuration electrically connected to the hydraulic compressor 4 is adopted,
Until the electric wire W and the retaining clamp C are set and the first compression operation is performed, the electric wire supporting means 2 does not move on the gantry 1 due to vibration, bending of the electric wire W, etc. There is no possibility that S will fall out of the sleeve of the retaining clamp C. Further, there is no possibility that the steel core wire S is pushed out of the sleeve of the retaining clamp C at the time of the first compression operation.
The inconvenience that the worker had to hold down the wire support means 2 was eliminated, and the selection of the support position of the wire support means 2 was simple and accurate.

[Brief description of the drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a plan view of a compression connection device, FIG. 2 is a front view of the compression connection device, and FIG. FIG. 4 is a side view of the electric wire supporting means, and FIG. 5 is a schematic plan view showing a compressed state of the compression connection device. DESCRIPTION OF SYMBOLS 1 ... Stand, 2 ... Wire support means, 3 ... Clamp support means, 4 ... Hydraulic compressor, 5 ... Motor, 6 ... Dies, 7 ... Screw rod, 8 ... Nut, 15 ... Limit switch, 16 Pinion, 18 Guide bar, 18a Stop position mark (concave), 19 Rack, C ... Retention clamp, S ... Steel core wire, W ... Electric wire.

Claims (1)

(57) [Claims] 1. A clamp supporting means for fixing a tip of a retaining clamp attached to one end side of an electric wire, an electric wire supporting means for supporting the electric wire substantially horizontally opposed to the clamp supporting means, and the clamp supporting means And between the wire support means,
A compression connection device for an anchor clamp provided on a base with a hydraulic compressor movable along the anchor clamp while repeating a compression-release-movement operation, wherein the electric wire support means is close to the clamp support means. A rack extending along the moving direction of the electric wire support means and a guide bar for rolling a limit switch in parallel with the rack are provided on the rack so as to be movable in a direction away from the rack. The electric wire supporting means may further include a pinion that rotates while meshing with the rack, an electromagnetic brake for stopping the rotation of the pinion, and operates the electromagnetic brake by sensing a stop position mark on the guide bar. A limit switch for causing the electromagnetic brake to operate when the first compression operation of the hydraulic compressor is completed. A compression connection device for an electric wire anchorage clamp, wherein the compression connection device is electrically connected to a hydraulic compressor so as to release a brake operation in response to a signal issued from the compressor.