KR20110012864A - Tensioning apparatus for drum cable - Google Patents

Abstract

PURPOSE: A tension device is provided to prevent the sinking of a cable by controlling the flow of a fluid inside a hydraulic motor. CONSTITUTION: A support part is arranged in both sides of a frame in order to support a drum rotation shaft. A drum brake unit(3) comprises a fluid tank(31) and a braking part. The fluid tank is arranged in the frame. The braking part is connected to the fluid tank. When the operation of a cable drum is stopped, the braking part brakes the drum rotation shaft. The braking part comprises a hydraulic motor(33) and a fluid brake unit. The rotary shaft of the hydraulic motor is connected to the drum rotation shaft through a power transmission unit.

Description

Tensioning apparatus for drum cable

The present invention relates to a tensioner for the electric wire drum, and more particularly, to prevent sagging due to the weight of the electric wire when replacing and installing a new wire, and to suppress the sagging of the electric wire due to the weight of the electric wire when the transfer of the electric wire stops as much as possible. The tensioning device for electric wire drums allows the unwinding rotation of to be stopped quickly.

In general, when wiring a new high voltage cable to a fixed telephone pole at intervals around a road or replacing an old high voltage cable, the cable is uninterrupted at the distribution line to minimize the damage and inconvenience of the industrial site caused by the power failure. Or for new installations, wire harnesses for distribution lines are used.

BACKGROUND ART Conventionally known uninterrupted wire distribution line wire cutting methods are known as wire wire wire cutting methods using wire wire cutting mechanisms, and wire wire upper installation methods for wire cutting wires on top of newly developed charging wires.

When wires are wired to the telegraph pole through the uninterruptible power distribution line wiring method, a wire drum is installed at a position where the wire wire starts and a winder (winch) is mounted to take the wire at the position where the wire wire ends. Then, when pulling the wire connected with the winch rope through the winding machine while placing the wire between the poles spaced apart from each other, it is necessary to maintain the tension of the wire in a constant state without stretching the wire. Failure to do so can lead to the death of a large-scale human accident due to the contact of existing and new cables.

In particular, when the wire is wired through the wire wire method and the charging wire upper wire wire method, when a new wire located at the top sags, it contacts the lower wire where electricity is being energized. Had a problem caused.

Accordingly, in order to solve the above problems, the "wire tensioner" of the Republic of Korea Patent No. 10-0479771, which has been previously filed and patented by the applicant of the present application (hereinafter referred to as "wire tensioner of the first embodiment", Is known.

In the wire tensioner of the conventional first embodiment, the wire tensioner comprising wire tensioning means disposed vertically up and down in the frame portion, the wire tensioning means includes a tension portion having a pair of tires, and among the tires The fixed tire is fixed and the other moving tire is driven up and down to crimp the electric wire, and the rotating shaft of the fixed tire is connected to the rotating shaft of the hydraulic motor, so that the back pressure due to the forced rotation of the hydraulic motor during the forced rotation of the fixed tire It is installed to be generated, the hydraulic outlet is installed on the hydraulic relief valve is characterized in that the tension can be adjusted.

Therefore, the tensioner for the electric wire drum of the first embodiment has the advantage that it is possible to maintain the tensioned state without the electric wire being pulled by using the back pressure caused by the forced rotation of the hydraulic motor.

By the way, in the process of using the wire tensioner of the first embodiment, during the transfer of the wire through the winding machine, it is possible to accurately adjust the tension of the wire by adjusting the flow rate of the hydraulic relief valve provided on the discharge side of the hydraulic motor, Due to the elapsed time of about 3 to 5 minutes after the transfer of the wire, the fluid filled inside the hydraulic motor flows back to the tank minutely due to the weight of the heavy wire. Weakening occurs.

Therefore, the longer the stop time of the wire transfer, the weaker the output of the hydraulic motor, the weaker the wire holding force through the adhesion of the upper and lower tires. There was a problem that caused the accident.

In addition, a "wire drum tensioner" (hereinafter, referred to as a "tensioner for wire drum of the second embodiment") of the Republic of Korea Patent No. 10-0697325 to which the applicant has previously applied for a patent is known.

Conventional second tensioner for the electric wire drum, the electric wire drum mounting unit is rotatably installed on the upright support of the lever type in close contact with the ground, and is detachably mounted on the rotating fixed shaft by the drum fixing part of the electric wire drum mounting unit. In the tensioner, an electric wire tensioning unit mounted at one end of the rotating fixing shaft to prevent the electric wire from sagging and the electric wire drum mounting stand to facilitate replacement of the electric wire drum coupled to the rotating fixing shaft. It is characterized in that the wire drum moving unit to automatically move up and down, integrally configured in the tensioner.

In particular, the wire tension portion is provided with a motor that rotates to transmit power to the applied power, and is provided with a rotary gear that is connected to the power transmission shaft of the motor by a chain to rotate the power of the motor, the work of the rotary gear A brake drum is mounted to the rotating shaft integrally protruding from the side to control the rotation of the rotary gear, and is mounted to the rotating shaft integrally protruding from the other side of the rotary gear so as to be movable. The clutch is provided to selectively transmit the rotation to the fixed shaft, characterized in that the side brake handle for selectively stopping the rotation of the brake drum is fastened to the lower end of the brake drum.

However, in using the tensioner for the electric wire drum according to the second embodiment, every time the operation is delayed and the transfer of the electric wire is stopped, it is necessary to tighten the brake drum by manipulating the side brake handle by manpower, which causes a lot of inconvenience in using the tensioner. Had a problem.

In addition, if the operator who operates the tensioner when the wire is wired does not fill the side brake by a small mistake, the wire has a problem of causing a large-scale accident that can cause a human accident due to a power failure due to sagging of the wire due to sagging of the wire.

Therefore, the present invention is invented to solve the conventional problems as described above, while controlling the working fluid of the hydraulic motor forcibly driven by the pulling force of the wire by the winding machine (winch) of the wires and replacement of the hydraulic By braking the fluid flow in the motor, the wire drum tensioner prevents the cable from sagging due to its own weight and stops the loosening of the wire drum automatically when the wire transfer is stopped due to the delay of wire wire and replacement. For the purpose of providing it.

In addition, there is another purpose to supply a separate hydraulic power to the hydraulic motor as necessary to rotate the wire drum in reverse, reverse.

In addition, by varying the height of both shaft supports that support the drum rotating shaft, it is possible to adjust the height of several electric wire drums regardless of the diameter of the drum. Another purpose is to provide tension for the wire drum.

The present invention for achieving the above object, in the tension of the wire drum for tensioning the wire while supplying the wire in the process of drawing the wire to the pole in the distribution line site; Two shaft supporting parts which are erected on both sides of the frame to support the drum rotating shaft of the electric wire drum; When the electric wire is pulled by the rope from the winder and the electric wire drum is rotated, the electric wire in the hydraulic motor is sucked from the fluid tank while the hydraulic motor is forcibly driven by receiving the rotational force of the drum rotating shaft through the clutch and the chain connection part. When the cable is stopped while the cable is stopped while the cable is stopped, the brake means for braking the drum by braking the fluid in the hydraulic motor and braking the rotating shaft of the hydraulic motor in conjunction with the fluid interruption. Drum braking means for automatically braking the loosening of the electric wire drum; Characterized in that it comprises a.

The drum braking means may include a fluid tank provided in the frame and one of the two shaft support parts, and a brake part connected to the fluid tank to brake the drum rotating shaft when the wire drum stops loosening. Characterized in that it comprises a.

In addition, the brake unit, the hydraulic motor is connected to the rotating shaft through the drum rotation shaft and the power transmission means, and the hydraulic motor and the fluid tank is connected to each other when the rotational force is transmitted to the rotating shaft to move the fluid in the hydraulic motor to the rotating shaft If the rotational force is not transmitted, the fluid braking means for controlling the movement of the fluid in the hydraulic motor and outputting a fluid movement intermittent signal, and the fluid shaft intermittent signal outputted from the fluid braking means is input to brake the rotary shaft of the hydraulic motor through a power source. It characterized in that it comprises the motor brake means for turning on or off.

In addition, the fluid braking means, the first pipe with a check valve for connecting the inlet side of the hydraulic motor and the fluid tank and preventing the fluid from flowing back to the fluid tank in the middle, the discharge side and the first tube of the hydraulic motor A second pipe connected between the check valve and the fluid tank, a valve part provided in the second pipe to discharge the fluid in one direction, and a flow control valve provided in the second pipe that is the discharge side of the valve part; It is characterized in that it comprises a pressure switch provided between the portion and the flow control valve to detect the pressure change of the fluid moved to the second pipe to output the fluid movement intermittent signal to the motor brake means.

The motor brake means may include an electromagnetic brake provided on the rotating shaft of the hydraulic motor to stop rotation of the rotating shaft, a battery connected to the electromagnetic brake, and a fluid movement control signal from the fluid braking means to supply power to the battery. It characterized in that it comprises a control unit for operating by applying to the electronic brake.

In addition, the valve unit is composed of a two-port switching valve for connecting the second pipe drawn from the hydraulic motor and the third pipe and the second pipe after the second pipe in one direction or by blocking the second pipe according to the manual operation, Between the check valve and the hydraulic motor and the third pipe, the rotating shaft of the hydraulic motor in the forward and reverse directions by the fluid supplied from a separate fluid supply means through a manual operation in the state that the hydraulic motor is stopped Forward and reverse rotation means is characterized in that it is further provided.

In addition, the forward and reverse rotation means, the fourth pipe drawn out from the first pipe between the check valve and the hydraulic motor, the third pipe and the fourth pipe through the manual operation separate fluid supply means and fluid supply A forward and reverse valve portion for selectively switching fluid direction to a fluid tank included in the means; The forward and reverse valve parts may be configured as a three-port switching valve capable of a neutral state for blocking the fluid supply and discharge of the third and fourth pipes.

In addition, the shaft support portion, the vertical tube is vertically erected to open the upper portion in the frame, the shaft support is inserted into the vertical tube so that the drum rotation shaft is fixed to rotate in the upper portion, and elevating the height of the shaft support It characterized in that it comprises a vertical hydraulic cylinder for varying the height of the drum axis of rotation.

The shaft support may include a lifting shaft inserted into the vertical pipe, and a support plate provided at an upper portion of the lifting shaft so that the drum rotating shaft is rotated by the fixing cover and the rod of the vertical hydraulic cylinder is fixed. do.

In addition, the power transmission means constituting the brake unit, the hydraulic motor and the motor brake means are fixed to the upper outer side of the shaft support via a fixing bracket is provided to be elevated with the shaft support; The power transmission means includes a connecting rotary shaft rotatably provided on the same axis as the drum rotating shaft in the fixing bracket, a clutch connecting the connecting rotating shaft and the drum rotating shaft to each other, and the connecting shaft and the rotating shaft of the hydraulic motor. It is characterized by consisting of a chain connection.

As described above, according to the present invention, the loosening rotation of the electric wire drum is automatically stopped quickly without any operation while controlling the deflection of the electric wire due to its own weight when the wire is stopped due to the delay of the wire and the replacement of the electric wire. In the process of releasing and supplying the wires, the tensioner is operated, eliminating the need for additional manpower, and precisely controlling the loosening and tensioning of the wires, thereby improving safety.

In addition, it is possible to rotate the wire drum in reverse and reverse direction, so that if the wire is loosened too much, the wire drum is rewound without cutting the wire to prevent waste of the wire, and if the wire is too short or the tension is too strong By sending a little more wire, it is possible to quickly wire the wires and rewind the wire to be re-used to the wire drum.

In addition, by varying the height of both shaft support parts supporting the drum rotating shaft, it is possible to install several electric wire drums regardless of the diameter of the drum. There are also effects that can be used.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 1 shows a tensioner for the electric wire drum of the present invention, Figure 1a is a perspective view, Figure 1b is a partially cut perspective view. And Figure 2 is a side view showing the tensioner for the electric wire drum of the present invention.

The tensioner for the electric wire drum of the present invention is to tension the electric wire while releasing and supplying the electric wire 20 in the process of taking the electric wire 20 through the winding machine 40 (see FIG. 8) to the telephone pole at the distribution line site. .

That is, the tensioner for electric wire drum of the present invention includes both shaft support parts 2 which are erected on both sides of the frame 1 placed on the ground to support the drum rotating shaft 41 of the electric wire drum 4 to be rotated.

And the tensioner for electric wire drum of the present invention, when the electric wire 20 is pulled by the rope from the winding machine 40, the electric wire drum 4 is rotated while the electric wire 20 is released, The hydraulic force is driven by the rotational force transmitted through the clutch 342 (see FIG. 3) and the chain connection part 346 (see FIG. 4) to move the fluid in the hydraulic motor 33 sucked from the fluid tank 31. When the disengagement of the wire 20 is stopped while the deflection due to the weight of the electric wire is stopped, the fluid in the hydraulic motor 33 is interrupted and the rotary shaft 331 of the hydraulic motor 33 is braked to interlock with the fluid interruption. It includes a drum braking means (3) for automatically braking the loosening of the wire drum (4) by operating the brake means 36 to brake the drum rotating shaft (41).

In addition, the drum braking means (3) is provided on the outside of one of the fluid tank 31 and the two shaft support portion (2) provided in the frame (1) and connected to the fluid tank (31) to the electric wire And a braking part 32 (see Fig. 4) for braking the drum rotating shaft 41 when the drum 4 is unscrewed.

Hereinafter, the configuration of the present invention in more detail as follows.

3 is a partial cross-sectional view taken along the line AA of Figure 1, Figure 4 is an enlarged view showing a drum braking means according to the present invention, Figure 5 shows a configuration of the drum braking means according to the invention, Figure 5a 5B is a hydraulic circuit diagram.

As shown in the figure, the brake unit 32 constituting the drum braking means 3, the hydraulic motor 33 is connected to the rotary shaft 331 through the drum rotary shaft 41 and the power transmission means 34. ) And the hydraulic motor 33 and the fluid tank 31 are connected to each other when the rotational force is transmitted to the rotary shaft 331 so that the fluid in the hydraulic motor 33 is moved and the rotary force is not transmitted to the rotary shaft 331. And a fluid braking means 35 for intermittent movement of the fluid in the hydraulic motor 33 and outputting a fluid movement intermittent signal.

In addition, the braking unit 32 receives the fluid movement intermittent signal output from the fluid braking means 35 and the motor brake for braking or releasing the rotating shaft 331 of the hydraulic motor 33 through a power source. Means 36.

Hereinafter, the braking part 32 will be described in more detail. The fluid braking means 35 constituting the braking part 32 connects the inflow side of the hydraulic motor 33 and the fluid tank 31 to each other. The first pipe 351 is provided with a check valve 352 to prevent fluid from flowing back into the fluid tank 31, the discharge side of the hydraulic motor 33 and the check valve 352 of the first pipe 351 And a second pipe 353 connected between the fluid tank 31 and the discharge part of the valve part 354 and the valve part 354 provided in the second pipe 353 to discharge the fluid in one direction. The flow control valve 355 provided in the second pipe (353), and provided between the valve unit 354 and the flow control valve 355 to sense the pressure change of the fluid moved to the second pipe (353) It includes a pressure switch 356 for outputting a fluid movement intermittent signal to the motor brake means (36).

In addition, the motor brake means 36 constituting the brake unit 32 is provided on the rotary shaft 331 of the hydraulic motor 33 and the electromagnetic brake 361 for stopping the rotation of the rotary shaft 331, The controller 366 connected to the electromagnetic brake 361 and the control unit 365 for receiving a fluid movement intermittent signal from the fluid braking means 35 to apply the power of the battery 366 to the electromagnetic brake 361 to operate the battery 366. ) Is included.

On the other hand, the tensioner for the electric wire drum of the present invention includes a configuration for rotating the drum rotating shaft 41 in the forward or reverse direction, when the configuration is specifically described as follows.

As shown in FIG. 5, the valve unit 354 communicates with the second tube 353 in one direction or blocks the second tube 353 according to manual operation, and then separates the third tube 5. And a second port switching valve connecting the second pipe 353 drawn out from the hydraulic motor 33.

In addition, between the check valve 352 of the first pipe 351 and the hydraulic motor 33 and the third pipe 5, a separate fluid through manual operation in the state in which the hydraulic motor 33 is stopped. Forward and reverse rotation means 6 for rotating the rotating shaft 331 of the hydraulic motor 33 in the forward and reverse directions by the fluid supplied from the supply means 7 is further provided.

That is, the forward and reverse rotation means 6, the fourth pipe 61 and the third pipe (5) drawn out from the first pipe 351 between the check valve 352 and the hydraulic motor 33, ) And fourth pipe (61) through the manual operation and the reverse and reverse valve section 62 for selectively switching the fluid direction to the fluid tank included in the separate fluid supply means 7 and the fluid supply means (7) ).

In addition, the forward and reverse valve portion 62 is composed of a three-port switching valve capable of a neutral state for blocking the fluid supply and discharge of the third and fourth pipes (5) (61), the operator's selection as needed By rotating the wire drum in the forward or reverse direction, the specific operation relationship will be described later.

In particular, the fluid supply means 7 is further provided on the upper portion of the frame 1, so that the operator can selectively rotate the wire drum 4 in the forward or reverse direction in the process of wires the wire 20, In addition, the ability to send or retract wires when wires remain or run short, and the ability to rewind the wires to be re-used to the wire drum are added to enable rapid wire work.

On the other hand, the fluid supply means 7 may be configured to be connected to the fluid supply unit provided in the other wire wire vehicle, by using the hydraulic device provided in the wire wire vehicle as it is, the fluid supply means 7 frame Compared to the tensioner installed directly in (1), the tensioner, which is a wire device for distribution lines, can be provided at a low cost to construction companies.

Figure 6 is an enlarged perspective view of the shaft support according to the present invention, as shown in Figures 1 to 4 and 6, each shaft support (2) standing on both sides of the frame (1) constituting the present invention Is a vertical tube 21 vertically erected to open the upper portion in the frame 1, and the shaft support 22 is inserted into the vertical tube 21 so as to be lifted so that the drum rotating shaft 41 is rotated on the upper portion (22). And a vertical hydraulic cylinder 23 for raising and lowering the height of the shaft support 22 to change the height of the drum rotating shaft 41. And both the vertical hydraulic cylinder 23 constituting the shaft support portion (2) provided on both sides is operated in conjunction with the tuning valve, it is possible to always raise and lower the drum rotary shaft 41 in a horizontal state.

That is, the vertical pipe 21 serves as a guide so that the shaft support 22 can lift and support the wire drum 4 which is a heavy body.

More specifically, the shaft support 22 is provided on the lifting shaft 221 and the lifting shaft 221 is inserted into the vertical pipe 21, the drum rotating shaft 41 is fixed to the cover ( It is composed of a support plate 222 is penetrated by the rotation 223 and the rod of the vertical hydraulic cylinder 23 is fixed. The fixing cover 223 is rotated and opened about the rear hinge shaft, and then the drum rotating shaft 41 is mounted, and then returned to its original position and tightened by a bolt.

In addition, the power transmission means 34, the hydraulic motor 33, and the motor brake means 36 constituting the brake part 32 are fixed to the upper outer side of the shaft support 22 through a fixing bracket 24. By being provided up and down together with the shaft support 22, the hydraulic motor 33 and the motor brake means 36 can be operated precisely regardless of the height of the drum rotating shaft 41.

Particularly, the power transmission means 34 includes a connecting rotary shaft 341 rotatably provided on the fixing bracket 24 on the same axis as the drum rotating shaft 41, a connecting rotating shaft 341 and the drum rotating shaft ( A clutch 342 for interconnecting 41 and a chain linking portion 346 for interconnecting the connecting rotary shaft 341 and the rotary shaft 331 of the hydraulic motor 33.

As the clutch 342, an electronically controlled clutch or a manual clutch can be used. In the drawing, a manual clutch using the lever 343 is illustrated. That is, in the manual clutch 342, the connecting plate 344 having a plurality of connecting pins 345 is moved on the spline of the connecting rotary shaft 341 through the manipulation of the lever 343, so that the drum rotating shaft 41 is moved. It is configured to be connected to the end.

The chain connecting portion 346 is composed of a sprocket provided on the connecting rotary shaft 341, a sprocket provided on the rotating shaft 331 of the hydraulic motor 33, and a chain connecting both sprockets.

FIG. 7 is a cross-sectional view taken along line BB of FIG. 4, and as shown in FIGS. 5 and 7, the electromagnetic brake 361 provided on the rotating shaft 331 of the hydraulic motor 33 stops the rotation of the rotating shaft 331. It includes a fixing plate 362 is wrapped around the rotating shaft of the hydraulic motor 33 without contact and fixed to the fixing bracket 24.

The motor brake means 36 includes a disk 363 spaced apart from the fixed plate 362 and rotated to interlock with a rotation shaft 331 of the hydraulic motor 33, and the power supply plate includes the fixed plate 362. When supplied, the disk 363 may be attached to the disk 363 by using magnetic force to stop the rotating shaft 331.

That is, the electromagnet plate 364 stops the rotation of the hydraulic motor 33 by attaching the disk 363 at the moment when a 12V power is applied from the battery 366 under the control of the controller 365 to generate a magnetic force. will be.

Hereinafter, the operation relationship of the tensioner for electric wire drum according to the present invention configured as described above are as follows.

8 is a schematic view showing a state in which wires are wired using a tensioner for electric wire drum of the present invention, which will be described below with reference to FIGS. 1 to 8.

First, when wired or replaced with a high-voltage wire in the telephone poles spaced apart at regular intervals, as shown in Figure 8, at a position of supplying the wire 20 at a distance of about 300m ~ 600m of the present invention By placing the tensioner for the electric wire drum and the winding machine 40 on which the wire 30 which pulls the electric wire 20 is located on the opposite side, the wire and the replacement work of the electric wire 20 are prepared.

Next, in the state as described above, when the wire 30 is pulled from the winder 40, the new wire 20 wound around the wire drum 4 provided in the tensioner for the wire drum is released while the telephone poles 10 It is installed on the insulator at the top of the wire complete.

In the process of installing the electric wire 20 in the telephone pole 10 as described above, the electric wire drum 4 takes the electric wire connected to the winch rope in the winder (winch), and the electric wire is released while rotating the drum shaft 41. Is rotated.

In addition, the rotational force of the drum rotation shaft 41 is transmitted to the hydraulic motor 33 through the connection of the power transmission means 34, so that the rotation shaft of the hydraulic motor 33 is idle.

Then, as shown in FIG. 5, the vacuum pressure is generated inside the hydraulic motor 33 due to the forced driving of the rotating shaft 331, so that the fluid filled in the fluid tank 31 passes through the check valve 352 to provide hydraulic pressure. The operation that flows into the inside of the motor 33 and passes through and circulated back to the first tube 351 through the second tube is continuously performed.

By the way, in the process of the operation as described above, the wire drum is stopped when the operation of the wire 20 of the wire 20 is delayed and the transfer of the wire 20 is stopped.

Then, as shown in FIG. 5, the rotation of the electric wire drum 4 is stopped to stop the drum rotating shaft 41 and the rotating shaft 331 of the hydraulic motor 33, thereby filling the fluid filled in the hydraulic motor 33. The check valve 352 provided in the first pipe 351 is prevented from flowing back to the fluid tank 31, thereby primarily preventing some amount of the wire 20 from being loosened.

However, as time passes, the deflection of the electric wire 20 increases, and as the pressure in the hydraulic motor 33 is increased, the fluid flows between the interior of the hydraulic motor 33 so that the hydraulic force is lowered. That is, the fluid flows into the gap around the vane of the gear or the rotor provided in the hydraulic motor 33, the phenomenon that the hydraulic force is gradually reduced.

By the way, as described above, it is possible to delay the time of sagging of the wire 20 through the blocking of the check valve 352, which has the advantage of preventing a safety accident caused by a sudden sag.

When the rotating shaft 331 of the hydraulic motor 33 is stopped, the pressure of the fluid passing through the second pipe 353 is equal to the set pressure. The pressure drop 356 detects the pressure drop of the second pipe 353 and outputs the data to the controller 365, and the controller 365 supplies power to the battery 366 through an output signal. Is applied to the electromagnetic brake 361 and the electromagnetic brake 361 is turned on, thereby physically stopping the rotation shaft 331 of the hydraulic motor 33.

Therefore, when the wire 20 is delayed during the operation of the wire 20, when the transfer of the wire 20 is stopped, the loosening speed of the wire drum can be quickly stopped at a certain time while slowing the deflection speed of the wire 20. Therefore, in the process of tensioning the wire drum tensioner has the advantage of ensuring the maximum safety by precisely controlling the loosening and tension of the wire 20 without the need for a separate braking manpower.

In particular, by preventing the wire drum (4) from quickly unwinding in the process of the transfer of the wire 20 is to have the advantage of preventing the power failure and large-scale casualties of high-voltage wires due to sagging of the wire.

On the contrary, when the transfer of the wire 20 is stopped, as described above, when the wire 20 is transferred again, the wire 20 is pulled through the winding machine 40 having a large pulling force, so that the hydraulic motor ( The rotary shaft 331 of the 33 is rotated in conjunction with the wire drum 4 to increase the internal pressure of the hydraulic motor 33 and the fluid pressure of the second tube 353 again.

Then, the pressure switch 356 senses the pressure rise of the second pipe 353 and outputs the data to the controller 365, and the controller 365 transmits the battery 366 from the battery 366 to the electromagnetic brake 361 through an output signal. By stopping the supply of the supplied power, the braking stop state of the electromagnetic brake 361 is released, so that the rotation shaft 331 of the hydraulic motor 33 is smoothly rotated.

Therefore, when the transfer of the electric wire 20 is restarted without releasing the electronic brake 361 separately, it is possible to automatically release the electronic brake, there is no need for a separate braking force as described above.

In addition, as shown in FIG. 5, in the process of wiring the electric wire 20, the electric wire 20 is loosened too much in the tensioner for electric wire drum, the electric wire 20 is loosened too short, or the electric wire 20 ) Tension is too strong.

Accordingly, the wire tensioner of the present invention is provided with forward and reverse rotation means 6 for rotating the wire drum 4 in the forward and reverse directions in preparation for the case described above.

Therefore, the operation relationship of the forward and reverse rotation means 6 according to the present invention in detail, as shown in Figure 5, the forward and reverse valve portion 354 consisting of a two-port switching valve and a three-port valve portion By manually operating the valve portion 62, the fluid is supplied from the separate fluid supply means 7 to the hydraulic motor 33 in the forward or reverse direction to rotate the hydraulic motor 33 in the forward or reverse direction.

Then, the rotary shaft 331 of the hydraulic motor 33 is rotated in the forward or reverse direction, the drum rotary shaft 41 connected to the hydraulic motor 33 and the power transmission means 34 is rotated in the forward or reverse direction, the electric wire drum (4) is also rotated in the forward or reverse direction.

Therefore, when the electric wire 20 is loosened too much, waste of the electric wire 20 can be prevented by rotating the electric wire drum 4 in the reverse direction and rewinding the electric wire 20 without cutting the electric wire 20. There is an advantage.

In addition, when the wire 20 is too short or the tension is too strong, it has the advantage that the wire drum 4 in the forward direction to send the wire 20 a little more to complete the wire work quickly.

On the other hand, as shown in Figures 1 and 5, by adjusting the height of the shaft support 22 constituting the two shaft support portion 2 of the frame 1, by adjusting the height of the drum shaft 41 Regardless of the diameter of the drum, it is possible to mount multiple wire drums.

Therefore, it is possible to use multifunctional as a wire drum tensioner by providing a tensioner for wire drums that can be used interchangeably in several sites where wire drums 4 having different diameters of wire drums are used according to the size of the wires in the field of distribution lines. Eliminate the inconvenience and will have a safe and economic effect.

1 shows the tensioner for the electric wire drum of the present invention,

       1A is a perspective view,

       1B is a partially cutaway perspective view.

Figure 2 is a side view showing the tensioner for the electric wire drum of the present invention.

3 is a partial cross-sectional view taken along the line A-A of FIG. 1B.

Figure 4 is an enlarged view showing a drum braking means according to the present invention.

Figure 5 shows the configuration of the drum braking means according to the present invention,

       5a is a configuration diagram,

       5B is a hydraulic circuit diagram.

Figure 6 is an enlarged perspective view of the shaft support according to the present invention.

7 is a cross-sectional view taken along the line B-B in FIG. 4.

8 is a schematic view showing a state in which the wire work of the wire using the tensioner for wire drum of the present invention.

<Description of the symbols for the main parts of the drawings>

1: frame

2: shaft support

    21: vertical tube

    22: shaft support

         221: lifting shaft, 222: support plate, 223: fixed cover

    23: vertical hydraulic cylinder

    24: fixing bracket

3: drum braking means

    31: fluid tank

    32: braking part

    33: hydraulic motor

         331: axis of rotation

    34: power transmission means

         341: connecting shaft, 342: clutch, 343: lever, 344: connecting plate,

         345: connecting pin, 346: chain connection

    35: fluid braking means

         351: first pipe, 352: check valve, 353: second pipe, 354: valve portion,

         355: flow control valve, 356: pressure switch

    36: motor brake means

         361: electromagnetic brake, 362: fixed plate, 363: disk,

         364: electromagnet plate, 365: control unit, 366: battery

4: wire drum

    41: drum rotating shaft

5: third tube

6: forward and reverse rotation means

    61: the fourth tube

    62: forward and reverse valve

7: fluid supply means

10: telephone pole

20: wire

30: wire

40: winder

Claims (10)

In the tension of the wire drum to tension the wire while releasing the wire 20 in the process of taking the wire 20 to the telephone pole in the distribution line site; Two shaft support parts 2 which are erected on both sides of the frame 1 to support the drum rotation shaft 41 of the electric wire drum 4 so as to rotate; When the electric wire 20 is pulled by the rope from the winder and the electric wire drum 4 rotates, and the electric wire 20 is released, the rotation force of the drum rotating shaft 41 is applied to the clutch 342 and the chain connection part 346. When the hydraulic motor 33 is forced to be driven and moved through the fluid in the hydraulic motor 33 sucked from the fluid tank 31 while the loosening of the electric wire 20 is stopped while suppressing the sag caused by the weight of the electric wire. The brake drum 36 is operated by braking the fluid in the hydraulic motor 33 and brakes the rotating shaft 331 of the hydraulic motor 33 to be interlocked with the control of the fluid. Drum braking means (3) for automatically braking the release of 4); Tensioner for electric wire drum comprising a. The method of claim 1, wherein the drum braking means (3) A fluid tank 31 provided in the frame 1, The eastern part 32 which is provided outside one of the two shaft support parts 2 and is connected to the fluid tank 31 to brake the drum rotating shaft 41 when the wire drum 4 is unscrewed is provided. Tensioner for electric wire drum, characterized in that it comprises. The method of claim 2, wherein the braking part 32, A hydraulic motor 33 to which the rotating shaft 331 is connected through the drum rotating shaft 41 and the power transmission means 34; When the rotational force is transmitted to the rotary shaft 331 by being connected to the hydraulic motor 33 and the fluid tank 31, the fluid in the hydraulic motor 33 is moved, and if the rotary force is not transmitted to the rotary shaft 331, the hydraulic motor ( A fluid braking means (35) which intercepts the movement of the fluid in 33 and outputs a fluid movement intermittent signal, And a motor brake means 36 for braking or releasing the rotating shaft 331 of the hydraulic motor 33 by receiving a fluid movement control signal output from the fluid braking means 35. Tensioner for electric wire drum. According to claim 3, The fluid braking means 35, A first pipe 351 having a check valve 352 connecting the inflow side of the hydraulic motor 33 to the fluid tank 31 and preventing the fluid from flowing back into the fluid tank 31; A second pipe 353 connected between the discharge side of the hydraulic motor 33 and the check valve 352 of the first pipe 351 and the fluid tank 31; A flow rate control valve 355 provided in the second pipe 353 and provided in the valve part 354 for discharging the fluid in one direction and the second pipe 353 which is the discharge side of the valve part 354; A pressure provided between the valve unit 354 and the flow control valve 355 to detect a pressure change of the fluid moved to the second pipe 353 to output a fluid movement control signal to the motor brake means 36. Tensioner for electric wire drum, characterized in that it comprises a switch (356). The motor brake means 36 according to claim 3 or 4, An electromagnetic brake 361 provided on the rotating shaft 331 of the hydraulic motor 33 to stop the rotation of the rotating shaft 331; A battery 366 connected to the electromagnetic brake; And a control part (365) for receiving the fluid movement control signal from the fluid braking means (35) and applying the power of the battery (366) to the electromagnetic brake (361). 5. The valve unit 354 of claim 4, wherein the valve part 354 communicates with the second pipe 353 in one direction or blocks the second pipe 353 in one direction according to manual operation. It consists of a two-port switching valve connecting the second pipe (353) drawn out from the motor 33, Between the check valve 352 and the hydraulic motor 33 and the third pipe (5), the hydraulic motor 33 is supplied from a separate fluid supply means (7) through a manual operation in a stopped state Front and back rotation means for rotating the rotating shaft 331 of the hydraulic motor (33) in the forward, reverse direction by the fluid further characterized in that the drum for tension. The method of claim 6, wherein the forward and reverse rotation means (6), and the fourth pipe (61) drawn out from the first pipe (351) between the check valve 352 and the hydraulic motor (33), and The third pipe (5) and the fourth pipe (61) is selectively connected to the fluid direction to the fluid tank (31) included in the separate fluid supply means 7 and the fluid supply means (7) by manual operation It includes a forward and reverse valve unit 62; The forward and reverse valve portion 62 is a wire drum tensioner, characterized in that composed of a three-port switching valve capable of a neutral state to block the fluid supply and discharge of the third, fourth pipe (5, 61). 4. The shaft support part 2 according to claim 3, In the frame (1), the vertical pipe (21) which stands vertically to open the top, A shaft support 22 inserted into the vertical pipe 21 so as to be lifted and lowered so that the drum rotating shaft 41 is rotated thereon; And a vertical hydraulic cylinder (23) for elevating the height of the shaft support (22) to vary the height of the drum rotating shaft (41). The method of claim 8, wherein the shaft support 22, A lifting shaft 221 inserted into the vertical pipe 21; It is provided on the lifting shaft 221 is characterized in that it comprises a support plate 222 through which the drum rotation shaft 41 is penetrated to be rotated by the fixed cover 223 and the rod of the vertical hydraulic cylinder 23 is fixed. Tensioner for electric wire drum. The method of claim 8, wherein the power transmission means 34, the hydraulic motor 33 and the motor brake means 36 constituting the braking portion 32, the fixing bracket 24 on the upper outer side of the shaft support (22) Fixed through) and provided to be elevated with the shaft support 22; The power transmission means 34 includes a connecting rotary shaft 341 provided on the fixed bracket 24 so as to be rotatable on the same axis as the drum rotating shaft 41, a connecting rotating shaft 341 and the drum rotating shaft 41. Tensioner for electric wire drum, characterized in that consisting of a chain connecting portion 346 to interconnect the clutch 342 and the connecting rotary shaft 341 and the rotary shaft 331 of the hydraulic motor (33).

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