JP2017073842A - Movable cable frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable cable frame capable of reducing time and labor required for fitting a cable head.SOLUTION: A movable cable frame 1 for fitting a cable head 26 of a movable power cable 25 comprises: a frame body 2 that is installed on a ground 35 and has a cable head fitting part 3 to which the cable head 26 is to be fitted, the cable head fitting part being provided at a predetermined height over the ground 35; a rotary support member 8 that is rotatably provided on the upper part of the cable head fitting part 3; a guide member 17 that is provided between the cable head fitting part 3 and the ground 35 and supports the movable power cable 25 so as to be capable of lifting the movable power cable toward the upper part of the movable cable frame 1; and a hoist 13 that is provided on the frame body 2, has a wire 16 capable of being delivered and hoisted, and is capable of connecting the wire 16 with the cable head 26 through the rotary support member 8 and the guide member 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a moving cable pedestal applied to mounting of a cable head of a moving power cable, and in particular, can be used in a narrow place where a heavy machine such as a crane cannot be installed, has a simple structure, and has an equipment cost. It is related with the cable pedestal for movement which can reduce.

  Conventionally, at power stations and substations, when power equipment breaks down due to an accident or disaster, a mobile power cable was laid for temporary restoration, and the power equipment that failed with the mobile power cable was bypassed. Recovery work is underway to replace the power equipment with a new one.

  The power cable for movement used for such temporary restoration includes a cable head with terminal treatment at both ends, and is stored in a state of being wound around a drum. For this reason, a drum or the like is transported to the site using a truck or the like, and a cable is pulled out from the drum by a worker's manual operation on the site, and is laid between a pair of racks that are installed in the site in advance.

  In this case, in order to prevent the cable from being scratched and damaged by the ground, a plurality of guide rollers are installed on the ground, and the cable drawn from the drum is passed through the upper part of the guide roller.

  In order to ensure safety, the cable head is vertically raised from the ground to a predetermined height at the position of the gantry, and the cable head is fixed to the upper part of the gantry to ensure a separation distance from the ground.

  At that time, when the insulator is provided on the cable head, the cable head becomes very heavy, and it is difficult to stand up vertically only by the human power of the worker. For this reason, the cable head is lifted vertically using a heavy machine such as a crane, and the cable head is fixed to the upper part of the gantry.

  However, since heavy machinery such as cranes cannot be installed when the work site is small, for example, cranes and other heavy machinery cannot be installed, and scaffolds such as stepladders are installed around the gantry, and the cable head is installed vertically by multiple workers. It must be started up and fixed to the gantry, which takes time and effort.

  In order to cope with the above problems, it is conceivable to employ techniques as described in Patent Documents 1 and 2.

  In the technique described in Patent Document 1, a temporary frame is installed around a frame, a winding device is installed on the rail of the temporary frame installed above the frame, and the cable head is lifted from the top of the loading platform such as a truck by the winding device. The hoisting device is traversed along the rail and moved to the position of the gantry, and the cable head is suspended by the hoisting device at the position of the gantry, and the cable head is fixed to the gantry.

  The technique described in Patent Document 2 is attached to a base supporting the weight of the cable head of the power cable for movement and a column extending above the base so as to be rotatable around a horizontal axis, and to attach the cable head. A turntable having a bracket, and a restricting portion for restricting the rotation range of the turntable between a mounting position where the cable head is attached to the bracket in a horizontal orientation and a use position where the cable head is used in a vertical orientation, A gantry provided with a fixing portion for fixing the turntable to a use position is used, and the moving power cable head is fixed to the gantry.

  However, since the technique described in Patent Document 1 needs to install a temporary framework around the pedestal, it is difficult to install the temporary framework when the target site is a narrow substation or the like. In addition to the frame for fixing the cable head, a temporary frame is required, resulting in high equipment costs.

  Moreover, since the structure described in Patent Document 2 has a complicated structure of the gantry, manufacturing the gantry takes time, labor, and costs, and the equipment cost is high.

Japanese Patent Laid-Open No. 10-261331 JP 2013-93940 A

  The present invention has been made in view of the conventional problems as described above, and can reduce the time and labor required for mounting the cable head of the moving power cable, and is a substation and the like where the work site is narrow. In addition, an object of the present invention is to provide a moving cable gantry that has a simple structure and can reduce equipment costs.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a moving cable mount for mounting a cable head of a moving power cable, and is installed on the ground, and a cable head mounting portion for mounting the cable head at a predetermined height above the ground The movable body is provided between the cable head mounting portion and the ground, and the moving power cable is connected to the moving cable. A guide member that is supported so as to be lifted toward the upper portion of the gantry, and a wire that is provided on the gantry body and that can be drawn out and wound up, and the wire is interposed through the rotation support member and the guide member. And a hoisting machine connectable to the cable head.

According to the moving cable gantry of the present invention, the wire is fed out from the hoisting machine, the wire is connected to the cable head via the rotation support member and the guide member, and the hoisting machine is operated to wind up the wire. By pulling the power cable to the position of the cable head mounting part of the gantry body through the guide member and attaching the cable head to the cable head mounting part, it can be attached to the moving cable gantry with the cable head raised. .
Therefore, even if the weight of the cable head is very heavy, it does not require multiple workers, and only a small number of workers can move to the extent that auxiliary work such as mounting the cable head on the upper part of the guide member is performed. Since the cable head of the power cable can be mounted on the cable head mounting portion, the time and labor required for mounting the cable head can be greatly reduced.
Even if the work site is a small place where heavy equipment such as cranes cannot be installed, the cable head can be attached to the cable head mounting part without using heavy equipment such as cranes. The range can be expanded.
Moreover, since it is the thing of the simple structure which provided the hoisting machine, the rotation support member, and the guide member in the gantry main body, installation cost can be held down cheaply.

  In the present invention, the guide member may include a band plate-shaped cable body and a resin film coated on the surface of the cable body with a predetermined thickness.

  According to the moving cable mount of the present invention, since the resin coating is provided on the surface of the cable body, the coating of the moving power cable is not rubbed and scratched on the surface of the guide member. Can increase the durability.

  Moreover, in this invention, while the said guide member is formed in the shape where the said cable head attaching part side was curved, it is good also as a part along the ground being formed horizontally.

  According to the moving cable mount of the present invention, the moving power cable can be prevented from falling off from the upper part of the guide member when the moving power cable is pulled up from the upper part of the guide member.

  In the present invention, a plurality of locations on the guide member may be provided with dropout prevention guides for preventing the moving power cable from dropping from the upper portion of the guide member.

  According to the moving cable mount of the present invention, the moving power cable can be more effectively prevented from dropping from the upper portion of the guide member when the moving power cable is pulled up from the upper portion of the guide member.

  In the present invention, the gantry body includes the cable head mounting portion, four legs that support the cable head mounting portion, and a reinforcing member provided between adjacent legs, and a lower end of each leg. It is good also as being comprised so that may be fixed to the ground with a pile.

  According to the moving cable mount of the present invention, even if the weight of the cable head of the moving power cable is very heavy, the mount body does not move on the ground, and the cable head can be attached efficiently. Can be done safely.

  As described above, according to the moving cable mount of the present invention, it is possible to reduce the time and labor required for mounting the cable head of the moving power cable, and it is also applicable to a substation or the like where the work site is narrow. In addition, the structure is simple and the equipment can be kept cheap.

It is the schematic which shows one Embodiment of the movement cable mount by this invention, Comprising: It is the schematic which showed the state before attachment of the cable head which has arrange | positioned the power cable for movement to the front side of the movement cable mount. It is A arrow directional view of FIG. It is a B arrow line view of FIG. It is sectional drawing of a guide member. It is the schematic which showed the state after attachment of a cable head. It is A arrow directional view of FIG. FIG. 6 is a view taken in the direction of arrow B in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show an embodiment of a moving cable mount according to the present invention. FIG. 1 is a schematic diagram showing a state in which a power cable for movement is arranged on the front side of the cable base for movement, and is a schematic diagram showing a state before the cable head is attached. FIG. 3 is a cross-sectional view of the guide member, FIG. 5 is a schematic view showing a state after the cable head is attached, FIG. 6 is a view taken along the arrow A in FIG. 5, and FIG. FIG.

  The moving cable gantry 1 according to the present embodiment includes a moving power cable 25 for temporary restoration when a power device breaks down due to an accident or disaster at a power substation. In 25, the failed power device is bypassed, and the failed power device is replaced with a new one.

  As shown in FIG. 1, the moving power cable 25 used for such restoration work includes a cable head 26 that is subjected to terminal processing at both ends, and the cable head 26 is used for moving at the root of the cable head 26. A bracket 27 for attaching to the cable mount 1 is provided. The moving power cable 25 is stored in a state of being wound around a drum (not shown).

  A protective cover 28 is attached to the cable head 26 of the moving power cable 25 to prevent damage. The protective cover 28 is attached to the cable head 26 after the cable head 26 is completely attached to the moving cable mount 1. Removed from.

  As shown in FIGS. 1 to 4, the moving cable gantry 1 of the present embodiment has a cable head mounting portion 3 provided horizontally at a predetermined height above the ground 35, and the cable head mounting portion 3 horizontally. A gantry body 2 including four legs 5 to be supported and reinforcing members 7 provided between the adjacent legs 5, 5, a rotation support member 8 rotatably provided on the cable head attachment portion 3, and a cable head A guide member 17 provided between the mounting portion 3 and the ground 35 and an electric winch 13 as a hoisting machine provided on the upper portion of the reinforcing member 7 of the gantry body 2 are provided.

  The cable head mounting portion 3 has, for example, a square pipe shape, and is formed of various steel materials. A rotation support member 8 is rotatably provided at an upper central portion of the cable head mounting portion 3. An attachment hole (not shown) for attaching the cable head 26 to the portion is provided.

  The rotation support member 8 is, for example, a pipe roller 8, and includes a pipe-shaped roller main body 9, a pair of bearings 10 and 10 in which outer rings are fitted to inner surface sides of both end portions of the roller main body 9, And a support shaft 11 fitted to the inner ring.

  The pipe roller 8 has a roller main body 9 positioned between a pair of support plates 4 and 4 provided on the upper part of the cable head mounting portion 3, and each of the pipe rollers 8 is provided in a support hole (not shown) provided in each support plate 4. By inserting the support shaft 11 and attaching and tightening a nut (not shown) to the end of the support shaft 11 protruding from each support plate 4, the cable shaft mounting portion 3 is rotatably provided. .

  By the roller main body 9 of the pipe roller 8, a wire 16 of an electric winch 13, which will be described later, is fed out and supported so as to be rewound.

  The rotation support member 8 is not limited to the pipe roller 8 but may be a pulley or the like capable of feeding the wire 16 of the electric winch 13 and supporting it so that it can be wound up.

  The legs 5 are made of various steel materials such as rods, plates, or pipes. The upper ends of the legs 5 are integrally connected obliquely and integrally with the four corners on the lower surface side of the cable head mounting portion 3 so as to widen toward the end.

  At the lower end of each leg 5, a plate-like foot portion 6 having a pile insertion hole (not shown) provided in the center is integrally connected, and the pile is inserted into the pile insertion hole of the foot portion 6. Each leg 5 is fixed to the ground 35 by inserting 31 into the ground 35.

  The reinforcing member 7 is made of various steel materials such as a rod shape, a plate shape, or a pipe shape. The reinforcing members 7 are horizontally provided between the lower ends of the adjacent legs 5 and 5, and the four legs 5 are reinforced by these reinforcing members 5.

  The electric winch 13 includes a rotatable drum 14, a motor 15 that rotates the drum 14, and a wire 16 that is wound around the drum 15 and wound around the drum 15. The reinforcing member 7 is attached to the upper central portion by bolts and nuts (not shown).

  The wire 16 drawn out from the drum 14 of the electric winch 13 is extended from the rear surface 2b side of the gantry body 2 to the front surface 2a side of the gantry body 2 through the upper portion of the roller body 9 of the pipe roller 8, and the gantry body 2 2 is attached to a bracket 27 at the base of the cable head 26 of the power cable 25 for movement disposed on the ground surface 35 on the front surface 2a side.

  As shown in FIG. 4, the guide member 17 includes a strip-shaped steel guide body 18, a resin coating 19 that is coded with a predetermined thickness on the surface of the guide body 18, and a surface side of the guide body 18. The dropout prevention guide 20 is provided at a plurality of locations.

  The guide member 17 is curved in the cross section in the width direction over the entire length so that both ends in the width direction are higher than the center, and is curved with a predetermined curvature in a side view from one end in the length direction to the intermediate portion. It is formed horizontally from the part to the other end.

  The guide member 17 is arranged so that one end side formed in a curved shape is fixed to the lower surface side of the cable head mounting portion 3 via the fixing bracket 21 and the other end side formed horizontally is along the ground surface 35.

  The drop-off prevention guide 20 is formed by bending a belt-like member into a C shape, and both ends thereof are integrally connected to both ends in the width direction of the guide member 17 by screws or the like.

  One end of the drop-off prevention guide 20 is pivotally connected to one end in the width direction of the guide member 17 via a hinge or the like, and the other end is removed from the other end in the width direction of the guide member 17 via a fastener or the like. You may comprise so that it may connect.

  In order to lay the moving power cable 25 using the moving cable gantry 1 of the present invention configured as described above, first, a pair of moving cable gantry is installed on the site where the power device has failed due to an accident or disaster. 1 is carried in, the cable pedestals 1 for both movements are arranged at predetermined positions on the ground surface 35 at intervals, and piles are placed in the holes for inserting the piles of the legs 6 of the legs 5 of the cable pedestals 1 for movement. Each leg 5 is fixed on the ground surface 35 by inserting 31 and driving each pile 31 into the ground surface 35.

  In addition, since a pair of cable base 1 for a movement has the same structure and will be installed on the ground 35 by the same procedure, in FIG. 1, only one cable base 1 for a movement is shown, The illustration and detailed description of the other moving cable mount 1 are omitted.

  Next, as shown in FIG. 1, the moving power cable 25 carried in the field while being wound around the drum is pulled out from the drum and placed on the ground surface 35 on the front surface 2 a side of the moving cable mount 1 to move. The cable head 26 of the power cable 25 is mounted on the guide member 17.

  At this time, the guide rollers 32 are installed at a plurality of locations on the ground 35 between the moving cable mount 1 and the drum, and the moving power cable 25 drawn from the drum is passed through the upper portion of the guide roller 32 to move The cable 28 of the power cable 25 is prevented from coming into contact with the ground 35.

  Next, a wire 16 is fed out from the drum 14 of the electric winch 13 of the moving cable gantry 1, and this wire 16 is passed from the rear surface 2 b side of the gantry body 2 through the upper part of the roller body 9 of the pipe roller 8 to the front surface 2 a side of the gantry body 2. To the bracket 27 at the base of the cable head 26 of the moving power cable 25 through the inside of the drop-off prevention guide 20 at the top of the guide member 17.

  Next, as shown in FIGS. 5 to 7, the electric winch 13 is operated to rotate the drum 14, whereby the wire 16 is wound around the drum 14, and the power cable 25 for movement is followed by the guide member 17. The bracket 27 at the base portion of the cable head 26 is pulled up to the position of the cable head attachment portion 3 little by little along the upper portion of the cable head 26.

  Next, the position of the bracket 27 is finely adjusted, the mounting hole (not shown) of the bracket 27 is aligned with the mounting hole of the cable head mounting portion 3, and a bolt is tightened with a nut between the mounting holes to tighten the bracket 27. Is attached to the cable head attaching portion 3.

  In this manner, the cable heads 26 at both ends of the moving power cable 25 can be attached to the pair of moving cable mounts 1 in a state where they are raised vertically.

  Thereafter, a lead wire (not shown) drawn from the cable head 26 is connected to the circuit of the failed power device, the failed power device is bypassed, and the failed power device is replaced with a new one. Do work.

  Then, after replacing the power device with a new one, the lead wire is removed from the circuit of the power device, and the cable head 26 of the power cable 25 for movement is removed from the gantry body 2 by the reverse procedure to the above. The power cable 25 is wound around the drum and collected, and the moving cable mount 1 is removed from the ground 35 and collected.

  In the moving cable gantry 1 of the present embodiment configured as described above, the electric winch 13 is actuated to pull up the moving power cable 25 along the upper portion of the guide member 17, and the root of the cable head 26. By attaching the bracket 27 to the cable head attachment portion 3, the cable head 26 can be attached in a state where it is raised vertically to the moving cable mount 1.

  Therefore, even if the weight of the cable head 26 is very heavy as in the case of the cable head 26 provided with the lever, a small number of workers can connect the cable head 26 to the upper portion of the guide member 17 without requiring a plurality of workers. Since the cable head 26 of the moving power cable 25 can be attached to the cable head attaching portion 3 by performing auxiliary work such as placing on the cable, the time and labor required for attaching the cable head 26 are greatly reduced. be able to.

  Even if the work site is a small place where heavy equipment such as cranes cannot be installed, the cable head 26 can be attached to the cable head mounting portion 3 without using heavy equipment such as cranes, so that work is possible. The scope of the site can be expanded.

  Further, when the cable head 26 of the moving power cable 25 is pulled up to the position of the cable head mounting portion 3, the moving power cable 25 is configured to pull up the upper portion of the guide member 17 provided with the resin coating 19 on the surface. Therefore, the covering of the moving power cable 25 is not rubbed and damaged on the surface of the guide member 17, and the durability of the moving power cable 25 can be improved.

  Further, since the power cable 25 for movement passes through the inside of the guide 20 for preventing the drop of the guide member 17, when the power cable 25 for movement is pulled up along the upper part of the guide member 17, the power cable 25 for movement moves the guide member 17. The working efficiency can be improved without falling off from the upper part.

  Moreover, since it is the thing of the simple structure which provided the electric winch 13, the rotation support member 8, and the guide member 17 in the gantry main body 2, equipment cost can be held down cheaply.

DESCRIPTION OF SYMBOLS 1 Moving cable mount 2 Mount main body 2a Front surface 2b Rear surface 3 Cable head attachment part 4 Support plate 5 Leg 6 Foot 7 Reinforcement member 8 Rotation support member (pipe roller)
9 Roller body 10 Bearing 11 Support shaft 12 Nut 13 Hoisting machine (Electric winch)
DESCRIPTION OF SYMBOLS 14 Drum 15 Motor 16 Wire 17 Guide member 18 Guide main body 19 Resin film 20 Fallout prevention guide 21 Fixing bracket 25 Power cable 26 Cable head 27 Bracket 28 Protective cover 31 Pile 32 Guide roller 35 Ground

Claims (5)

A moving cable mount for attaching a cable head of a moving power cable,
A gantry body provided on the ground and provided with a cable head attaching portion for attaching the cable head at a predetermined height above the ground; a rotation support member provided rotatably on the upper portion of the cable head attaching portion; A guide member that is provided between the cable head mounting portion and the ground and supports the moving power cable so as to be lifted toward an upper portion of the moving cable gantry, and is provided on the gantry main body and extended. A moving cable gantry comprising a wire that can be wound up, and a hoisting machine capable of connecting the wire to the cable head via the rotation support member and the guide member.   The moving cable mount according to claim 1, wherein the guide member includes a band plate-shaped cable main body and a resin film coated on the surface of the cable main body with a predetermined thickness.   3. The moving cable mount according to claim 1, wherein the guide member is formed in a shape in which the cable head mounting portion side is curved, and a portion along the ground is formed horizontally.   The dropout prevention guide for preventing the moving power cable from dropping from an upper part of the guide member is provided at a plurality of locations of the guide member. The moving cable mount described in 1. The gantry body includes the cable head mounting portion, four legs that support the cable head mounting portion, and a reinforcing member provided between adjacent legs,
The moving cable mount according to any one of claims 1 to 4, wherein a lower end of each leg is fixed to the ground by a pile.

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