JP7422589B2 - Wire rope guide device for hanging insulators - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies January 1, 2020 Electricity Site January 2020 Vol. Published on pages 98 to 101 of 59

Application of Article 30, Paragraph 2 of the Patent Act Announced at the 2019 improvement reform case presentation held at Kuken Building on September 25, 2019

The present invention is designed to prevent interference between the wire rope that hangs the insulator and is wound around a winch on the ground via a metal wheel above the tower, which interferes with the armrest, etc. This invention relates to a wire rope guide device for guiding a wire rope to a position where it is avoided.

BACKGROUND ART Conventionally, as an insulator lifting device used to hold an insulator to a cross arm of a power transmission line tower, the device described in Patent Document 1 is known. In this insulator lifting device, the lower ends of two telescopically adjustable booms each having a turnbuckle structure are pivotally attached to one of the two horizontal main members of the tower arm. The upper ends of the booms are connected by a boom head, and a chain block is used to pull the wire that is attached to the other horizontal main member via the diagonal main member of the cross arm to raise and lower it. A pulley device is suspended from the top of the boom, and the insulator is lifted by operating a winch on the ground. The lifting position can be determined from left to right by adjusting the length of the two booms on the left and right.

Japanese Patent Application Publication No. 6-86418

The conventional insulator lifting device described above has a turnbuckle structure, so it is difficult to turn and the range in which it can be turned is narrow. In addition, there are other drawbacks, such as the large number of parts and the time required for installation and removal.
Therefore, the invention adopts a method of lifting and lowering the insulators to and from a plurality of lower cross arms using a single pulley that is anchored to the steel tower at a position above the cross arms. An object of the present invention is to provide a guide device for a wire rope for hanging, which has a simple structure and can safely and easily avoid interference with a cross arm.

The present invention will be described below with reference to the reference numerals in the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above-mentioned problems, the wire rope guide device 1 of the present invention uses a wire rope R hung on a lifting pulley P attached to a steel tower T above a cross arm C1 on which an insulator G is suspended, to a winch on the ground. A wire rope guide device attached to the arm C1 of the steel tower T so as to guide the wire rope R suspending the insulator G to a desired hanging position during construction work in which the insulator G is lifted and lowered by the operation of W. , a fixed part 2 that grips the horizontal main member A made of angle-shaped steel that constitutes the cross arm C1 of the steel tower T, an arm part 3 extending horizontally from the fixed part 2, and the arm part 3 of the arm part 3. A guide wheel 4 that is suspended from the tip and on which the middle of the wire rope R is hung, and a pair of lever blocks for fixing the arm part 3 to the horizontal main member A at an arbitrary extension angle position with respect to the horizontal main member A. (registered trademark) 5. The fixing part 2 includes a support member 6 that abuts the mountain side of the horizontal main member A, and a support member 6 that abuts the valley side with the horizontal main member A sandwiched between the support member 6 and is coupled to the support member 6 with a bolt 8. A holding member 7 is provided. The arm portion 3 is supported by a support member 6 on the base end side so as to be able to pivot horizontally left and right, and is provided with an arm body 3b extending horizontally from the support member 6, and on left and right side surfaces of the distal end side of the arm body 3b. It is provided with two pull metal fittings 3c and a hanging metal fitting 3d provided at the lower part of the tip side. The guide wheel 4 is suspended from a hanging fitting 3d of the arm body 3a. The wire rope R is hung on the guide wheel 4 in the middle of hanging. The lower hooks 5a of the pair of lever blocks 5 are locked to the pull metal fittings 3c, and the upper hooks 5b are held to the horizontal main member A on both left and right sides of the arm body 3a.

The wire rope guide device 1 for suspending insulators of the present invention adjusts the extension angle of the arm portion 3 with respect to the fixed portion 2, and supports the horizontal main member A with the lever block 5, so that the guide wheel 4 By pulling the wire rope R on its way, the hanging position of the insulator G can be easily set to a position where it does not interfere with the other arm C2 below. Thereby, it is possible to omit the work of manually moving the insulator on the lower cross arm C2 to a non-interfering position, which has been conventionally performed.

FIG. 2 is an explanatory diagram of a state in which the wire rope guide device of FIG. 1 is used. FIG. 2 is a front view of the wire rope guide device of FIG. 1; FIG. 2 is a plan view of the wire rope guide device of FIG. 1; FIG. 2 is a side view of the wire rope guide device of FIG. 1;

Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the guide device 1 for the wire rope R guides a winch W on the ground by means of a wire rope R hung on a lifting pulley P attached to a steel tower T above a cross arm C1 on which an insulator G is suspended. Used for construction work where insulator G is lifted and lowered by operation.

The guide device 1 is attached to the arm C1 of the steel tower T so as to pull the wire rope R suspending the insulator G laterally and guide it to a desired hanging position.

As shown in FIGS. 2 to 4, the guide device 1 includes a fixed part 2 that grips a horizontal main member A made of angle steel that constitutes a cross arm C1 of a steel tower, and a fixed part 2 that extends horizontally from the fixed part 2. an arm portion 3, a guide metal wheel 4 suspended from the tip of the arm portion 3, and a guide wheel 4 for fixing the arm portion 3 to the horizontal main member A at an arbitrary extension angle position with respect to the horizontal main member A; In FIG. 2, a pair of left and right lever blocks (registered trademark) 5 are provided.

The fixing part 2 includes a support member 6 that abuts against the mountain side of the horizontal main member A, and abuts on the valley side with the horizontal main member A sandwiched between the support member 6, and is connected to the support member 6 with a bolt 8. A holding member 7 is provided.

The support member 6 includes a first abutting plate part 6a that abuts the back surface of the horizontal main material A over a predetermined length, and a second abutting plate part 6b that abuts the bottom surface of the horizontal main material A for a predetermined length. The second contact plate part 6b includes a shaft cylinder part 6c that projects vertically downward from the lower surface of the second contact plate part 6b.

A pair of holding members 7 are provided on both sides of the support member 6 at a distance from each other in the center thereof. The holding member 7 includes a vertical plate part 7a that faces the first abutting plate part 6a of the support member 6 and abuts against the vertical valley side surface of the horizontal main material A over a predetermined length, and a second abutting plate part. 6b and a horizontal plate portion 7b that contacts the horizontal valley side surface of the horizontal main material A over a predetermined length, and a pair of approximately triangular ribs that connect the two plate portions 7a, 7b at both edges thereof. 7c.

The arm portion 3 includes a bearing tube portion 3a that is horizontally rotatably fitted into the shaft tube portion 6c on the base end side, and a rectangular cylindrical arm body 3b extending horizontally from the bearing tube portion 3a.

A shackle-like pull fitting 3c for connecting the lever block 5 is provided on the left and right side surfaces of the tip end of the arm body 3b, and a shackle-like hanging fitting 3c for hanging the guide wheel 4 is provided at the bottom of the tip. A metal fitting 3d is provided.

A wire rope R for suspending the insulator G is hung on the guide wheel 4 in the middle of the wire rope R hanging thereon. The guide wheel 4 pulls the wire rope R in the middle of hanging to any side so that the insulator G suspended by the wire rope R does not interfere with other cross arms C2 and the like below.

The lower hooks 5a of the pair of lever blocks 5 are respectively latched to the left or right puller fittings 3c of the arm body 3b, and the upper hooks 5b are latched to the horizontal main member A on the left and right sides of the arm body 3b. Ru.

By pulling the lever block 5, the arm body 3b is turned in a direction in which the wire rope R is pulled by the guide wheel 4, and is fixed to the horizontal main member A by the lever block 5 at a desired horizontal extension angle position.

The procedure for removing the insulator G using the guide device 1 will be explained. First, the horizontal main member A of the arm arm C1 is gripped by the supporting member 6 and the clamping member 7, and the arm main body 3b is attached so as to extend horizontally from the horizontal main member A.

Next, a pair of lever blocks 5 are connected between the pull fitting 3c of the arm body 3b and the horizontal main member A.

Next, the guide wheel 4 through which the wire rope R has passed is connected to the hanging fitting 3d of the arm body 3b.

Next, the arm body 3b is rotated to bring its tip close to the insulator G suspended on the tip side of the arm C1.

Next, the insulator G is removed from the cross arm C1, locked to the lower end of the wire rope R, and the winch W is operated to lift it up.

Next, by winding up or rewinding the left and right lever blocks 5 by two workers and rotating the arm body 3b, the wire is moved by the guide wheel 4 to a position where the insulator G does not interfere with the lower arm C2. The rope R is pulled laterally and the arm body 3b is fixed to the horizontal main member A at a predetermined position using the lever block 5.

Thereby, the worker can omit the dangerous work of pushing the insulator G on the lower cross arm C2 to avoid the cross arm C2, and the work of suspending the insulator G can proceed smoothly. When lifting the insulator G to the arm C1 of the steel tower T, this guide device 1 can be used in the reverse order to the above procedure.

1 Hanging wire guide device 2 Fixing part 3 Arm part 3a Bearing cylinder part 3b Arm main body 3c Pull metal fitting 3d Hanging metal fitting 4 Guide wheel 5 Lever block 5a Lower hook 5b Upper hook 6 Support member 6a First contact plate part 6b Second contact plate part 6c Shaft tube part 7 Holding member 7a Vertical plate part 7b Horizontal plate part 7c Rib 8 Bolt C1 Arm C2 Lower arm arm T Steel tower A Horizontal main member G Insulator P Lifting pulley R Wire rope W winch

Claims (2)

In construction work in which an insulator is lifted and lowered by operating a winch on the ground using a wire rope that is hung on a lifting pulley attached to a steel tower above the cross arm on which the insulator is suspended, the wire rope that hangs the insulator is A wire rope guide device attached to an arm of the steel tower so as to guide the wire rope to a desired hanging position,
A fixing part that grips the main horizontal member made of angle steel that constitutes the arms of the steel tower, an arm part that extends from the fixing part so as to be able to pivot horizontally left and right, and the wire that is suspended from the tip of the arm part. a guide wheel on which the extension of the rope is hung to determine the hanging position of the wire rope; and a guide wheel that determines the hanging position of the wire rope; a pair of lever blocks (registered trademark) for fixing to the horizontal main member at any extending angle position,
The fixing part includes a support member that comes into contact with the mountain side of the horizontal main member, and a holding member that comes into contact with the valley side with the horizontal main member sandwiched between the support member and is coupled to the support member with a bolt. and
The arm portion includes an arm body that is horizontally rotatably supported by the support member on the base end side and extends horizontally from the horizontal main member, and two pull metal fittings provided on the left and right side surfaces of the distal end side of the arm body. and a hanging metal fitting installed at the bottom of the tip side,
The guide metal wheel is suspended from the hanging fitting,
A wire for suspending an insulator, wherein the lower hooks of the Lever Block (registered trademark) are respectively engaged with the puller metal fittings, and the upper hooks are engaged with the horizontal main member on both left and right sides of the arm body. Rope guide device. The support member includes a first abutting plate portion that abuts on the back surface of the horizontal main material over a predetermined length, a second abutment plate portion that abuts on the bottom surface over a predetermined length, and the second abutment plate portion that abuts on the bottom surface over a predetermined length. and a shaft cylinder portion that projects vertically downward from the lower surface of the contact plate portion of No. 2,
The insulator according to claim 1 , wherein the arm portion includes a bearing tube portion that is horizontally rotatably fitted into the shaft tube portion, and the arm main body extends horizontally from the bearing tube portion. A wire rope guide device for hanging.

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