JP2006188330A - Mobile cable winding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile cable winding device capable of efficiently winding up a long and heavy cable by allowing an extremely large torque to be applied to a winding drum. <P>SOLUTION: In this mobile cable winding device A, a pair of support lifts 2 and 2 stabilizing the movement of the deck of a truck T are installed at the end of the deck, and a winch 3 winding up a lead wire W<SB>L</SB>for preparatory operation for extracting a cable C and a cable winding means 4 winding up the cable C are installed on a sub-frame installed on the deck. The cable winding means 4 comprises the drum 5, drive rollers 6 and 6 rotatingly driving the drum, and a drum pressing mechanism 7 pressing the drum against the drive rollers 6 and 6. Drum flanges 5f and 5f are rotated by the drive rollers 6 and 6 to impart a large torque to the drum so as to increase the efficiency of underground line extraction operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile cable winding device provided with a winding drum for pulling out an underground wire embedded in the ground on a movable carriage.

  Underground transmission lines are less susceptible to lightning damage and storms and floods than overhead transmission lines, and are actively used in the suburbs of large cities for securing land and aesthetics. The OF cable (oil-filled cable), etc. often used for this underground power transmission line is subject to changes such as failure, disconnection, or deterioration. A pulling end is attached to the pulling eye, a lead wire is connected, the lead wire is pulled by a winch or the like to pull out the cable, and when the cable end is pulled out for a predetermined length, it is wound around a winding drum, and then wound. A method of winding a drum by rotating it is generally performed.

  The cable winding device for carrying out the winding method is provided with means for rotatably supporting the winding drum on the loading platform of a vehicle such as a truck and for rotating the drum so as to be movable to the drawing position. When winding the cable, lift the rear part of the carrier with a support lifter to stabilize the carrier so that it does not move easily. On the carrier, rotational torque is transmitted from the rotation drive means to the center of the winding drum, and the winding drum Is configured to wind the cable.

  However, in the cable winding device having such a configuration, the winding drum has a drum diameter of 2 m or more, the drum flange has a larger diameter, and is formed in a cross shape provided on the inner diameter of the rotating winding drum. Since the torque is transmitted to the center of the frame, the transmitted torque has a small capacity. Therefore, since the drum cannot be rotated with a large torque during the cable pulling operation, it is extremely difficult to pull out the thick, long and heavy cable, and the working efficiency is low.

  In consideration of the above-mentioned problems, the present invention is capable of efficiently winding a long and heavy cable so that a very large rotational torque can be applied to the winding drum. It is an object to provide a winding device.

  As a means for solving the above-described problems, the present invention provides a winch for winding a lead wire for pulling out a cable of an underground wire on a loading platform of a self-propelled vehicle, and a cable winding for winding the cable. A cable winding means, a drum that winds the cable, a drum flange that rotatably supports the drum flange of the drum, a driving roller that applies a rotational driving force to the drum flange, and a drum as the driving roller. It consists of a drum pressing mechanism for pressing, and a cable that has been pulled out for a predetermined length by winding a lead wire with a winch is wound around a drum that is rotated by contact with a drive roller, and a cable that is laid in the ground is pulled. The mobile cable winding device is configured to be pulled out.

  The mobile cable winding device of the present invention configured as described above is placed on a self-propelled vehicle, moves to a position where the cable of the underground line is to be pulled out, and performs the winding operation of the cable. As a preparatory work, first, the lead wire is connected to the end of the underground wire, the other end is guided to the winch on the loading platform, the lead wire is wound by this winch for a predetermined length, and the cable is pulled out to the vicinity of the drum.

  When the cable is pulled out to the vicinity of the drum, the lead wire is removed, the cable end is locked to the drum, the drum is rotated by contact with the driving roller, and the cable is wound around the drum. At this time, in order to impart rotation without slippage from the drive roller to the drum flange, a drum pressing mechanism is engaged with the shaft end of the drum, and the drum flange contacts the drive roller with an optimum pressure. So that it is pressed.

  In the movable cable winding device of the present invention, the drum flange of the drum is supported by the driving roller, and the driving roller is rotated in a state where the drum flange is pressed against the driving roller to apply a rotational torque to the outer peripheral portion of the drum flange. As a result, a large rotational torque can be applied to the drum. For this reason, a long and heavy cable can be wound by the drum.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a main cross-sectional view of the mobile cable winding device of the embodiment, and FIG. 2 is a plan view thereof. This mobile cable winding device A is used for exchanging the cable C of the underground cable. The mobile cable take-up device A is a self-propelled vehicle, that is, a subframe 1 fixedly provided on a loading platform D of a truck T, and the subframe 1 serves as a loading platform stabilization means at a position near the rear end of the loading platform D. mounting a support lifter 2 using the hydraulic cylinder, provided with a winch 3 for winding the lead wire W _L for withdrawing the cable C on the sub-frame 1, and a cable winding means 4 for winding the cable C Yes.

The cable C is not shown is connected by pulling eye like in culvert or the like gutter of the road surface to the lead wire W _L, lead to lead wire W _L Te pulled ground to winch 3, wound by the winch 3 The cable C is pulled out by a predetermined length, and the cable is wound around the winding means 4 and pulled out. Further, the support lifter 2 has a leg portion at the tip of the piston rod which is contracted during movement, and the leg portion is lowered to the road surface R until the wheel behind the loading platform D is slightly lifted from the road surface R. The piston rod is protruded so as to prevent movement of the loading platform when winding the cable, and is provided for stabilization. The support lifter 2 is provided with a pair of left and right (two) at predetermined positions of the subframe 1.

Winches 3 are disposed on the sub-frame 1, in the illustrated example, is driven by a hydraulic motor 3a (including reduction gear), the capstan is used with a drum 3b for winding the lead wire W _L in cantilever form ing. Thus guiding the capstan type winch 3 to the lead wire W _L guide roller 3c to the vicinity of the winch 3 is provided, the guide roller 3d to the lower surface of the sub-frame at the rear end of the sub-frame 1 is provided. Accordingly, the lead wire W _L passes through the guide roller 3d from the rear end of the sub-frame 1, it is arranged so as from the lower surface of the sub-frame 1 wound on the drum 3b winch 3 via another guide roller 3c Yes. Incidentally, the lead wire W _L passes through the center position in the width direction of the loading platform (subframe 1) in a plan view, the width direction position of the winch 3 to reach the drum 3b is set.

  The cable winding means 4 includes a drum 5 for winding the cable C, a driving roller (under roller) 6 and 6 for rotatably supporting the drum 5 on the loading platform, and applying a rotational driving force, and a drum to the driving roller. The drum pressing mechanism 7 for attaching is configured. The drum 5 has drum flanges 5f and 5f at both ends, and both the drum flanges 5f and 5f are freely rotatable by driving rollers 6 and 6 attached to two predetermined horizontal frames near the front and rear of the subframe 1. I support it. The drive rollers 6 and 6 include a roller cylinder 6a and 6a incorporating a hydraulic motor, a speed reducer, and a control valve, and flange receivers 6b and 6b at positions corresponding to the drum flanges 5f and 5f at the ends of the roller cylinders 6a and 6a 6b is provided.

  The cylindrical bodies 6a and 6a are connected to the opposite cylindrical bodies 6a and 6a by connecting shafts 6x and 6x, and are thereby driven to rotate in synchronization with the drive-side roller cylindrical bodies 6a and 6a. The flange receiver 6b of each cylindrical body 6a rolls by frictional contact between the drum flange 5f and the metal and transmits rotational torque. When transmitting torque via the flange receiver 6b, the drum pressing mechanism 7 is provided so as to attract the bearing portion 7a provided at the protruding end of the drum shaft 5x and press the drum flange 5f of the drum 5 against the flange receiver 6b. The torque can be transmitted efficiently.

  In the illustrated example, the drum pressing mechanism 7 includes a bearing portion 7a rotatably provided at the protruding end of the drum shaft 5x, a holder plate 7b attached to the bearing portion 7a, a shackle 7c, a wire 7w, and an engaging member. 7e and a hydraulic cylinder 7f are connected in this order, and the hydraulic cylinder 7f is fixed to a lateral frame near the rear of the subframe 1. The wire 7w is provided such that the direction is changed to a right angle by a roller 7d attached to the subframe 1 via a roller receiver, and the drum 7 is pressed by pulling the wire 7w by a hydraulic cylinder 7f provided in the horizontal direction.

A traverser mechanism 8 is provided on the rear end 1 _{E of the} subframe 1. The traverser mechanism 8 guides the cable C to be wound up in an orderly manner by moving the winding position in the drum width direction when winding the cable C drawn from the ground around the drum 5. Means. In the traverser mechanism 8, a guide roller 8a for guiding the cable C is rotatably attached to a bracket, and a screw shaft 8b is inserted into the bracket so as to be movable in the drum width direction by screw engagement. An endless chain 8c is wound around the sprocket 8d, and the other sprocket 8d is provided on the output shaft of the hydraulic motor / reducer unit 8e to rotate the screw shaft 8b. 8g is a guide rod.

  Although not shown in the drawing, the hydraulic motor of the winch 3, the hydraulic motors of the drive rollers 6 and 6, the cylinder unit 2, the hydraulic cylinder 7f of the drum pressing mechanism 7, and the hydraulic motor of the traverser mechanism 8 are respectively variable displacement type. Necessary hydraulic fluid is sent from the pump and gear pump via the switching valve. Each pump is provided in parallel on the pump shaft, and the pump shaft is used to output the engine of the vehicle (truck T). It is rotationally driven by the power that is branched from the transmission that transmits to the main shaft of the rear wheel.

  The mobile cable winding device A of the embodiment having the above-described configuration performs the winding operation of the cable C as follows. The mobile cable take-up device A has a cable C at a predetermined end position of the underground cable to be replaced, for example, an underground cable laid in a gutter or a pipe tunnel. And the cable T is pulled out by moving the track T to a position appropriately spaced from this position in order to pull out the terminal. As a preparatory work for the work of pulling out the cable C, the rear part of the truck T stopped at the above position is slightly lifted (to the extent that the rear wheels are lifted) by the cylinder unit 2 of the cargo bed stabilization means and stabilized.

Then, first, connect the lead wire W _L to the cut end of the cable C. Lead wires W _L is connected thereto by connecting the pulling eye like the cut end of the cable C. The other end of the lead wire W _L is pulled from the underdrain to the ground, a predetermined length min the mobile cable winding device guide roller 3d which is provided in connection with the winch 3 A, the winches 3 via 3c Wind around the drum. Then, winding the lead wire W _L by driving the winch 3, pulled out a predetermined length fraction cables C in the retracting force. This predetermined length extends to the vicinity of the drum 5 so that the end of the cable C can be fixed to the drum. When the cable C is pulled out by this length, the winch 3 is stopped.

Next, remove the lead wire W _L still connected to cable C which is withdrawn from the pulling eye, the end of the cable C, as shown in FIG. 4, pulling on the guide roller 8a traverser mechanism 8, the guide The drum 5 is locked via the roller 8a, and then the drum 5 is driven to rotate. At the start of rotation of the drum 5, the guide roller 8a of the traverser mechanism 8 is located near one end in the width direction of the drum 5, and the guide roller moves in parallel with the winding position moving as the cable C is wound around the drum 5. As the cable 8a moves, the cable C is wound so that the cables of the winding layers are neatly adjacent to each other.

  When the drum 5 is rotationally driven, the drum pressing mechanism 7 is operated in advance, and the drum flanges 5f and 5f are pressed against the driving rollers 6 and 6 by the drum flanges 5f and 5f. The drum is rotated while being brought into frictional contact so as not to slip, and the cable C is pulled out by the rotational force of the drum. The rotational force of the drum of this type is large because the diameter of the drum flanges 5f and 5f is a large diameter close to 3 m in the illustrated example, and the torque is large, compared with the conventional method in which the rotational torque is directly transmitted to the center of the drum shaft. The drum can be rotated with a large torque more than several times.

  In the above embodiment, the drum pressing means 7 uses components such as a wire and a cylinder. However, the drum is directly connected to the protruding shaft of the drum, or the screw shaft is rotated to pull the protruding shaft at the rod end. Various other methods can be adopted. The drive rollers 6 and 6 are configured such that the drum flanges 5f and 5f are in frictional contact with the surfaces of the drive rollers 6 and 6, but the drive rollers 6 and 6 and the drum flanges 5f and 5f are formed with tooth-shaped surfaces or rubber contact surfaces. Also good.

  The mobile cable winding device according to the present invention is formed by providing a winding device for transmitting a large torque from the driving roller to the drum flange and winding the cable around the drum in a self-propelled vehicle. It can be used as a cable winding device that efficiently performs the drawing operation.

Main sectional view of mobile cable winding device of embodiment Same as above 1 is a cross-sectional view taken along line III-III in FIG. Illustration of cable winding state

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Subframe 2 Support lifter 3 Winch 4 Cable winding means 5 Drum 6 Drive roller 6a Roller cylindrical body 6b Flange receiver 7 Drum pressing mechanism 8 Traverse mechanism A Cable winding device T Track D Loading platform W _L Lead wire C Cable R Road surface

Claims (3)

  A winch for winding a lead wire for pulling out the cable of the underground wire on a self-propelled vehicle loading platform and cable winding means for winding the cable are provided. The cable winding means winds the cable. A drum, a drive roller that rotatably supports the drum flange of the drum and applies a rotational driving force to the drum flange, and a drum pressing mechanism for pressing the drum against the drive roller. A cable take-up device configured to take up a cable drawn by a predetermined length by winding a cable on a drum rotated by contact with a driving roller and draw out a cable installed in the ground.   The movable cable winding according to claim 1, wherein a support lifter is provided near the rear end portion of the loading platform to support the rear portion of the loading platform by raising and lowering it with respect to the road surface and preventing and stabilizing the movement of the vehicle. Taking device.   A guide roller that guides the lead wire to the winch is arranged at the rear end of the loading platform, and a traverser mechanism is provided on the rear end of the loading platform, along with the drum rotation corresponding to the cable winding position in the drum width direction. The mobile cable winding device according to claim 1 or 2, wherein the cable is wound around a drum of the cable winding means through a guide roller of the moving traverser mechanism.

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