JP2009278693A - Removing device of suspension clamp for earth wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a removing device of a suspension clamp for earth wire which decreases the whole work hours sharply while ensuring the safety of work when inspection work or replacement work of a suspension clamp which is supporting an earth wire stretched above the steel tower of an overhead transmission lines is performed. <P>SOLUTION: A removing device of a suspension clamp for earth wire, used for removing a suspension clamp by temporarily lifting an earth wire supported by the suspension clamp fixed to an arm metal, includes: a standing leg provided in a position on the upper surface of the arm metal corresponding to the fixing position of the suspension clamp on the lower surface of the arm metal; and a mounting base consisting of horizontal arms projecting from the opposite ends at an upper portion of the standing leg, and a line stretcher lifting or hanging the earth wire is provided at the distal end of each horizontal arm of the mounting base. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention temporarily lifts the ground wire supported by the suspension clamp when performing inspection work or replacement work of the suspension clamp that supports the ground wire stretched on the upper part of the tower of the elevated transmission line. Thus, the present invention relates to an apparatus for removing a suspension clamp for ground wire from which the suspension clamp can be removed.

  In recent years, the suspension clamp that supports the ground wire rusts due to deterioration over time at the upper part of the tower for the overhead transmission line, and the suspension wire tilts due to the influence of wind power etc. However, measures are taken to remove the suspension clamp and inspect it or replace it with a new suspension clamp as a countermeasure in case of breakage.

  For example, as shown in FIG. 8, the ground line L is a suspension clamp fixed to the lower surface of the horizontal piece A2 of the angle member A constituting the arm metal Q protruding in the horizontal direction at the upper part of the steel tower by a bolt. Supported by P.

  That is, the suspension clamp P includes a suspension device mounting bracket 1 fixed to the horizontal piece A2 of the angle member A constituting the arm metal Q, a single link 2 coupled to the suspension device mounting bracket 1, and a single link 2 The lower end of the connecting bracket 3 extends outward, the receiving bracket 4 is fixed to the lower end of the connecting bracket 3, and the overhead wire bracket 5 is supported on the receiving bracket 4.

  The suspension device mounting bracket 1 is configured by welding a forked bracket to the lower surface of a metal flat plate, and the upper end of a single link 2 is connected to the forked bracket by a bolt. In addition, the upper end of the connection fitting 3 is connected to the lower end of the single link 2 by a bolt.

  The lower part of the connecting fitting 3 extends outward, and the lower end thereof is in contact with the inner surface of the receiving fitting 4 and is connected by a cotter pin.

  An overhead wire fitting 5 is welded onto the receiving fitting 4. In order to hold the ground wire L, the overhead wire fitting 5 has a groove portion 6 whose upper side is open.

  And the ground wire L is located in the groove part 6 of the overhead wire fitting 5, the drop prevention plate 7 is fixed with a bolt so as to cover the upper surface of the groove part 6, and the ground wire L is prevented from dropping from the groove part 6. Yes.

  The suspension device mounting bracket 1 of the suspension clamp P, the single link 2 connected to the suspension device mounting bracket 1, the connection bracket 3 connected to the single link 2, and the bolts connecting these are the ground line L. Since each component member tilts due to the influence of wind power, etc., and rubs and wears, it is necessary to take measures to remove this suspension clamp P and check for abnormalities or replace it with a new suspension clamp P. Become.

  In this case, since the suspension clamp P supports the ground line L, it is impossible to remove the suspension clamp P as it is.

  Therefore, it is necessary to remove the ground wire L from the suspension clamp P and temporarily support the ground wire L with other members.

  Conventionally, as a measure for temporarily supporting the ground line L, a cam along 8 and a chain block 9 are used as shown in FIG.

  Specifically, the cam along 8 is attached to the left and right symmetrical positions of the ground line L that the worker has embarked on the ground line L and protrudes on both sides through the steel tower. At the same time, chain blocks 9 that can withstand a horizontal tension of 3 tons are attached to both sides of the upper part of the steel tower.

  Then, both cam along 8 are evenly tightened from both sides of the steel tower by the chain 10 of the chain block 9, and the tension of the ground wire L is transferred to the chain block 9 and the chain 10 side, so that the load of the ground wire L against the suspension clamp P By removing the suspension clamp P, the suspension clamp P can be removed to check for abnormalities or replaced with a new suspension clamp P.

  In addition, as an apparatus for temporarily lifting the ground wire L supported by the suspension clamp P fixed to the arm metal Q, for example, an overhead wire lifting apparatus disclosed in Patent Document 1 exists.

In this overhead wire lifting device, a pedestal portion is fixed to an arm metal Q, a jack whose upper end is movable up and down is provided on the pedestal portion, and a horizontal arm is supported by the jack so as to be movable up and down. The overhead wire is connected by a connecting body.
JP 2005-184927 A

  However, in the temporary support measure for the ground line L using the conventional cam along 8 and the chain block 9, charging of the power transmission line is stopped for safety, and an operator starts the ground line L at the upper part of the steel tower. Since the work is performed, it takes time to replace the suspension clamp P. Moreover, if there are not many workers, the replacement work cannot be completed within the stop period.

  In addition, since it is necessary for the worker to travel a distance of about 3 m to 5 m along the ground line L in order to attach the cam along 8, the worker cannot work with a stable posture and is dangerous in a high place called a steel tower. Work factors are increasing.

  Furthermore, since the place where the cam along 8 is provided is located far from the steel tower, the chain 10 of the chain block 9 becomes longer than 5 m, the workability is deteriorated, and at the same time, the hanging chain 10 may be in contact with the charged part. .

  In addition, when removing the suspension clamp P, since the amount of the ground wire L taken in is large, the weight of the ground wire L or the twist of the ground wire L enters the suspension clamp P, and workability is poor.

  In addition, after the suspension clamp P has been exchanged, it is necessary for the worker to step along the ground line L in order to remove the cam along 8 again.

  In addition, when stopping a transmission line, it is timed for when demand is low or when a power plant is shut down, so when stopping transmission over a wide range of transmission lines, many electrical workers are required at the same time. It is difficult to secure a large number of people.

  Further, since the ground line L must be drawn to the chain block 9 side at the upper part of the steel tower via the cam along 8, the strength of the chain block 9 is required to be able to counter this tension. For example, the horizontal tension 3 Therefore, it is necessary to use a large and heavy chain block 9 that can withstand the force of tons.

  On the other hand, since the overhead wire lifting device shown in Patent Document 1 works using heavy objects such as jacks at the top of the steel tower, there is a risk that the overhead wire lifting device itself becomes unstable and falls.

  Moreover, the overhead wire lifting device with such a jack structure requires a heavy weight jack that can withstand vertical loads because the load of the ground wire is directly applied to the jack, and is unsuitable for work in high places on a large steel tower. Has a point.

  Therefore, the present invention was created in view of the existing circumstances as described above, and the inspection work and replacement work of the suspension clamp that supports the ground wire stretched on the upper part of the steel tower of the elevated transmission line are performed. It is an object of the present invention to provide a ground wire suspension clamp detaching apparatus that can significantly reduce the overall work time while ensuring work safety.

  The present invention is an apparatus for removing a ground wire suspension clamp that is used to temporarily lift a ground wire L supported by a suspension clamp P attached to a brace Q and remove the suspension clamp P. The ground wire suspension clamp detaching apparatus includes a standing leg portion installed on the upper surface of the arm metal Q and an upper end of the standing leg portion corresponding to the attachment position of the suspension clamp P on the lower surface of the arm metal Q. The above-described problems have been solved by providing a mounting base composed of a horizontal arm protruding from the horizontal arm, and providing a tensioner capable of lifting and lowering the ground wire L at each end of the horizontal arm of the mounting base.

  According to the present invention, when removing the suspension clamp P in order to perform inspection work or replacement work of the suspension clamp P supporting the ground wire L stretched on the upper part of the tower of the elevated transmission line, While ensuring safety, the overall work time can be greatly shortened, and work efficiency can be greatly improved compared to conventional methods.

  That is, the present invention is an apparatus for removing a ground wire suspension clamp that is used to temporarily lift the ground wire L supported by the suspension clamp P attached to the arm metal Q and remove the suspension clamp P. Thus, the ground wire suspension clamp detaching apparatus includes a standing leg portion installed on the upper surface of the arm metal Q in accordance with the attachment position of the suspension clamp P on the lower surface of the arm metal Q, and A mounting base composed of horizontal arms projecting from both ends of the upper part is provided, and a tensioning device capable of lifting and lowering the ground wire L is provided at each end of the horizontal arm of the mounting base. The ground wire L can be supported by the wire device.

  Specifically, the load of the ground wire L is applied to the two tensioners on the horizontal arm of the mounting base, temporarily creating a state in which there is no load on the suspension clamp P, and the suspension clamp P is removed from the arm bracket Q. It makes it possible.

  And since the cam along and the chain block are not used for removing the suspension clamp P as in the prior art, the entire work time is shortened.

  For example, it took about 3 hours for three workers to work for 4 hours after climbing the tower and working.

  In addition, the inspection and replacement work of the suspension clamp P during the stop period can be completed with a small number of people without requiring many workers.

  Further, it is not necessary for the worker to travel a distance of about 3 m to 5 m along the ground line L, and the worker can work with a stable posture, and can reduce the factor of dangerous work at a high place called a steel tower.

  Furthermore, there is no risk of the chain hanging down and coming into contact with the live part.

  In addition, since the ground wire L is lifted vertically by the mounting base and the wire drawing device, even a small and light wire drawing device can be constructed and transported easily.

  For example, since two conventional No. 3 cam alongs with a weight of 10 kg are not required, it is very easy to carry the removal device of the ground wire suspension clamp.

  Further, since the ground wire L is lifted vertically by the two wire tensioners attached to the mounting base, the so-called two-wire suspension state occurs, and the load of the ground wire L is dispersed. The ground line L can be easily lifted.

  In addition, the ground line L is not damaged during the work.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The apparatus for removing the suspension clamp for ground wire according to the present invention is a suspension clamp when performing inspection work or replacement work of the suspension clamp P supporting the ground wire L stretched on the upper part of the steel tower of the elevated transmission line. The ground wire L supported by P is temporarily lifted, and the suspension clamp P can be removed.

  As shown in FIG. 8, the suspension clamp P is attached to a brace Q in the steel tower. The arm metal Q in the steel tower is provided with two angle members A above it. The two angle members A have a predetermined separation distance in the horizontal direction on the side of the tower that is the base end portion.

  The two angle members A are fixed in a state where the separation distance is shortened toward the distal end side and joined at the distal end portion. The two angle members A each have a vertical piece A1 and a horizontal piece A2 connected to the vertical piece A1, and the tip of the arm metal Q is the vertical piece A1 of the two angle members A1. Are joined together and are formed in a substantially inverted T shape together with the horizontal piece A2.

  The suspension clamp P is attached to the lower surface of the horizontal piece A2 of the angle member A via a predetermined bolt and nut at the tip of the arm metal Q.

  Moreover, the ground line L is supported by the suspension clamp P attached to the horizontal piece A2 of the angle member A, as shown in FIG.

  The suspension clamp P has a suspension device mounting bracket 1 fixed to the horizontal piece A2 of the arm metal Q, a single link 2 connected to the suspension device mounting bracket 1, and a lower portion connected to the single link 2 outside. The connecting fitting 3 spreads in the direction, the receiving fitting 4 fixed to the lower end of the connecting fitting 3, and the overhead wire fitting 5 supported on the receiving fitting 4.

  The suspension device mounting bracket 1 is formed by welding a forked bracket to the lower surface of a metal flat plate, and the upper end of the single link 2 is connected to the forked bracket by a bolt. Furthermore, the upper end of the connecting fitting 3 is connected to the lower end of the single link 2 with a bolt.

  The lower part of the connecting fitting 3 extends outward, and the lower end thereof is in contact with the inner surface of the receiving fitting 4 and is connected by a cotter pin.

  An overhead wire fitting 5 is welded onto the receiving fitting 4. In order to hold the ground wire L, the overhead wire fitting 5 has a groove portion 6 whose upper side is open.

  And the ground wire L is located in the groove part 6 of the overhead wire fitting 5, the drop prevention plate 7 is fixed with a bolt so as to cover the upper surface of the groove part 6, and the ground wire L is prevented from dropping from the groove part 6. Yes.

  As shown in FIG. 1, the apparatus for removing the ground wire suspension clamp according to the present invention is attached to the lower surface of the horizontal piece A2 of the angle member A constituting the arm metal Q protruding in the horizontal direction in the steel tower of the elevated transmission line. Corresponding to the attachment position of the suspension clamp P, the standing leg 12 is installed on the upper surface of the horizontal piece A2 of the angle member A, and the horizontal arm 13 is projected horizontally from the upper ends of the standing leg 12. It consists of a mounting base 11 that is formed in a substantially T-shape.

  Further, the mounting base 11 in the ground wire suspension clamp removing device is formed so as to be able to stand on its own. Therefore, when the mounting base 11 is placed on the arm metal Q, it is not necessary to support the mounting base 11 in order to prevent the mounting base 11 from overturning, and the mounting base 11 can be easily fixed to the arm metal Q.

  Specifically, as shown in FIGS. 5 (a), (b), (e), and (f), in the horizontal arm 13 formed so that the cross section is substantially T-shaped, from the lower center, The bifurcated standing leg portion 12 is configured by extending the pair of left and right strips 12a downward.

  As shown in FIGS. 5 (a) and 5 (b), the intermediate portion of the bifurcated standing leg portion 12 is connected by a strip plate 12b having a narrow vertical width, and above the strip plate 12b is a substantially rectangular shape. An opening 12c is provided. Moreover, the hole 13a for suspending the connection body 21 mentioned later is provided in each front-end | tip of the horizontal arm 13. As shown in FIG. Further, a rectangular reinforcing plate 12d is attached from the lower surface of the horizontal arm 13 to the lower side of the two strips 12a.

  Further, as shown in FIGS. 5D and 5E, in the pair of left and right strips 12a constituting the bifurcated standing leg portion 12, a pair is provided on each inner edge located below the opening portion 12c. The clamping piece 14 is provided. The sandwiching piece 14 is formed in a plate shape, and has a support plate portion 14a projecting forward from below.

  Further, as shown in FIGS. 5D and 5F, each inner edge located below the opening 12c also on the back side of the pair of left and right strips 12a constituting the crotch standing leg 12 In addition, a pair of clamping pieces 17 is provided. This clamping piece 17 is formed in a triangular plate shape that becomes wider as it goes downward. Also on the back side of the bifurcated standing leg portion 12, a rectangular reinforcing plate 12 d is attached from the lower surface of the horizontal arm 13 toward the lower side of the two strip plates 12 a.

  Then, as shown in FIG. 1, with the bifurcated standing leg portion 12, both hanging pieces A <b> 1 where two angle members A constituting the arm metal Q are joined are sandwiched, and the standing leg portion 12 is sandwiched. The supporting plate portions 14a of the both sandwiching pieces 14 that are fixed are brought into contact with the both hanging pieces A1. In addition, the pair of sandwiching pieces 17 are also brought into contact with both hanging pieces A1 on the back side of the pair of left and right strips 12a constituting the standing leg portion 12.

  At this time, the mounting base 11 is formed so as to be able to stand by itself on the horizontal piece A2 of the two angle members A constituting the arm metal Q.

  That is, as shown in FIG. 1, when the two hanging pieces A1 joined by the two angle members A constituting the arm metal Q are sandwiched between the bifurcated standing leg portions 12, a pair of left and right bands The bottom surface of the plate 12a contacts the horizontal piece A2 of the two angle members A. At the same time, the bottom surface of the support plate portion 14a of the sandwiching piece 14 and the bottom surface of the sandwiching piece 17 are also in contact with the horizontal pieces A2 of the two angle members A.

  Since the sandwiching pieces 14 and 17 are fixed so as to have an angle of 90 degrees with respect to the pair of left and right strip plates 12a constituting the bifurcated standing leg portion 12, the strip plates 12a When the bottom surface and the bottom surfaces of the sandwiching pieces 14 and 17 are in contact with the horizontal pieces A2 of the two angle members A, the mounting base 11 is self-supporting.

  Further, as shown in FIGS. 5D and 5E, the support plate portion 14a of both sandwiching pieces 14 is provided with a long hole 14b in the lateral direction. Then, using the bolts attached to the two hanging pieces A1 where the two angle members A constituting the arm metal Q are joined, the bolts are connected to the arm metal via the long hole 14b of the support plate portion 14a. Insert the Q through both vertical pieces A1 and slide the standing leg 12 back and forth to adjust the position, then tighten with the nut from the opposite side, and fix the mounting base 11 to the tip of the armrest Q ing.

  Further, as shown in FIG. 2, a wire tensioner 21 is suspended from each end of the horizontal arm 13. And the ground wire L is supported in the lower end part of the stringer 21. FIG.

  The wire tensioner 21 that supports the ground wire L is composed of a base frame 23 having a predetermined hanging bracket 22 at its upper end and a moving frame 25 having a ground bracket L hanging bracket 24 at its lower end. In addition, the moving frame 25 that suspends the ground wire L can move in the vertical direction via a wire 26 wound on the base frame 23 side.

  A base frame 23 constituting the wire tensioner 21 is attached to each tip of the horizontal arm 13 by a hanging metal fitting 22 that is hooked in a hole 13 a formed at each tip of the horizontal arm 13.

  The basic frame 23 includes a rotating drum 27 that winds a wire 26 having a predetermined length. The base frame 23 includes a ratchet gear 28 and a handle 29 attached to the ratchet gear 28.

  The ratchet gear 28 has a predetermined switching lever. For example, by fixing the switching lever at a “winding” position, the handle 29 is reciprocally swung to rotate the wire 26 in the winding direction. 27 can be activated. Further, for example, by fixing the switching lever at the “return” position, the handle 29 can be reciprocally swung to operate the rotary drum 27 in the direction of feeding the wire 26.

  The moving frame 25 provided with the suspension fitting 24 of the ground line L at the lower end has a pulley 30 above the suspension fitting 24.

  Then, the wire 26 drawn from the rotating drum 27 of the base frame 23 attached to each end of the horizontal arm 13 is wound around the pulley 30 of the moving frame 25 so as to support the pulley 30 of the moving frame 25 from below. It is turning. Further, the base frame 23 has a fixing bolt 31 in the vicinity of the rotating drum 27, and the distal end portion of the wire 26 wound around the pulley 30 of the moving frame 25 is fixed to the fixing bolt 31.

  For this reason, when the handle 29 is reciprocally swung and the rotary drum 27 is operated in the direction in which the wire 26 is wound, the wire 26 drawn below the base frame 23 becomes gradually shorter, and accordingly the moving frame 25 is moved. The pulley 30 is rotated, and the moving frame 25 suspending the ground line L is lifted upward.

  Further, when the rotary drum 27 is operated in a direction in which the handle 29 is reciprocated and the wire 26 is pulled out, the wire 26 drawn out below the base frame 23 becomes gradually longer, and accordingly the pulley of the moving frame 25 is pulled. 30 rotates and the moving frame 25 that suspends the ground line L is lowered downward.

  Next, a method for removing the ground wire suspension clamp using the ground wire suspension clamp removal device configured as described above will be described in detail.

  The ground wire suspension clamp can be removed by placing the standing leg 12 of the mounting base 11 on the upper surface of the arm metal Q and suspending the wire tensioner 21 at each end of the horizontal arm 13 of the mounting base 11. And a step of operating the wire tensioner 21 to temporarily lift the ground wire L and detaching the suspension clamp P supporting the ground wire L.

(Process of installing the standing leg of the mounting base on the upper surface of the arm bracket)
First, as shown in FIG. 4A, the grounding work is performed in advance by connecting the ground wire L and the suspension clamp P with a conductor.

  Then, as shown in FIGS. 1 and 4 (b), attachment of the suspension clamp P attached to the lower surface of the horizontal piece A2 of the angle member A constituting the arm metal Q protruding in the horizontal direction in the steel tower of the elevated transmission line Corresponding to the position, the mounting base 11 is attached to the upper surface of the horizontal piece A2 of the angle member A.

  At this time, as shown in FIG. 1, the mounting base 11 sandwiches the two hanging pieces A1 joined by the two angle members A constituting the arm metal Q by the bifurcated standing leg portion 12, The support plate portions 14a of both sandwiching pieces 14 fixed to the standing leg 12 are brought into contact with both hanging pieces A1.

  The support plate portion 14a of both sandwiching pieces 14 is provided with a long hole 14b in the lateral direction. Then, the bolt attached to the two hanging pieces A1 where the two angle members A constituting the arm metal Q are joined is temporarily removed, and this bolt is attached to the arm through the long hole 14b of the support plate portion 14a. Insert the gold Q into both vertical pieces A1, slide the standing leg 12 in the front-rear direction, adjust the position, tighten with the nut from the opposite side, and fix the mounting base 11 to the tip of the arm metal Q To do.

(Providing a state in which a wire tensioner is suspended from each end of the horizontal arm of the mounting base)
Next, as shown in FIG. 2 and FIG. 4 (c), the hanging bracket 22 is hooked in the hole 13 a formed at each tip of the horizontal arm 13, and the wire tensioner 21 is attached to each tip of the horizontal arm 13. The base frame 23 to be configured is provided in a suspended state.

  Further, the wire 26 is pulled out from the rotating drum 27 of the base frame 23, and the moving frame 25 is lowered downward to approach the ground line L.

(Process to support the ground wire by temporarily lifting the ground wire by operating the wire tensioner)
After moving the moving frame 25 close to the ground line L, the hanging bracket 24 of the moving frame 25 is attached to the ground line L as shown in FIG.

  In this state, for example, after the switching lever of the ratchet gear 28 of the wire tensioner 21 is fixed at the “winding” position, the handle 29 is reciprocally swung to rotate the wire 26 in the winding direction. Is operated, and the moving frame 25 suspending the ground line L is lifted upward.

  In this way, the ground wire L is temporarily lifted by the wire tensioner 21 attached to each end of the horizontal arm 13 of the mounting base 11.

  At this time, the load of the ground wire L is entirely applied to the two wire tensioners 21 attached to the respective ends of the horizontal arm 13 of the mounting base 11, and the load on the suspension clamp P is eliminated.

(The process of removing the suspension clamp that supported the ground wire)
In this way, after eliminating the load of the ground wire L on the suspension clamp P, it is attached to the lower surface of the horizontal piece A2 of the angle member A constituting the arm metal Q as shown in FIGS. Remove the suspended clamp P.

  The removed suspension clamp P is inspected for abnormalities. If necessary, the suspension clamp P is replaced with a new suspension clamp P, and the suspension clamp P is attached to the arm bracket Q.

  After that, for example, after the switching lever of the ratchet gear 28 of the wire tensioner 21 is fixed at the “return” position, the handle 29 is reciprocally swung to operate the rotary drum 27 in the direction of feeding the wire 26. Then, the moving frame 25 that suspends the ground line L is lowered downward.

  And finally, the load of the ground wire L is applied to the suspension clamp P.

  Finally, after removing the wire tensioner 21 from the ground wire L, the mounting base 11 attached to the arm bracket Q is removed.

  In addition, FIG. 6 shows another form of the mounting base 11.

  As shown in FIGS. 6A to 6F, the mounting base 11 has two strips 12a projecting downward from the lower center of the horizontal arm 13 having a T-shaped cross section, The standing leg part 12 which connected the part by the connection board is comprised. A rectangular opening is formed at the center of the two strips 12a.

  A hole 13a for suspending the above-described wire tensioner 21 is provided at each end of the horizontal arm 13. Further, a pair of triangular reinforcing ribs 15 extending from the lower surface of the horizontal arm 13 to the lower end of the standing leg 12 is extended in a pair.

Furthermore, a pedestal 16 made of a horizontal plate is fixed to the lower end of the standing leg 12 by welding. As shown in FIG. 6C, the pedestal portion 16 extends in the horizontal direction at the lower end portion of the standing leg portion 12 so as to be orthogonal to the horizontal arm 13.
Moreover, as shown in FIGS. 6E and 6F, the pedestal portion 16 has two rectangular openings with the standing leg portion 12 as a boundary. Furthermore, bolt holes 16 a for attaching the mounting base 11 to the arm metal Q via bolts are formed at the four corners of the base portion 16.

  As shown in FIG. 7, this type of mounting base 11 has a flat top surface at the tip of two angle members A, and the fixing plate 32 is mounted on the top surface. This is preferable for installation on the plate 32.

  At this time, each of the two angle members A has a vertically extending piece A1 and a horizontal piece A2 continuously connected to the upper end of the vertically extending piece A1, and the distal end portion of the arm metal Q is the two angle members. A hanging piece A1 and horizontal piece A2 of A are close to each other.

  The fixed plate 32 connects a portion formed in a rectangular shape on the distal end side and a portion formed in a substantially trapezoidal shape on the proximal end side so as to follow the outline of the horizontal piece A2 of the two angle members A. It is formed in a plate shape having a predetermined length as a whole.

  The fixing plate 32 is attached to the upper surface of the horizontal piece A2 of the angle member A via a predetermined bolt and nut at the tip of the arm metal Q.

  In addition, at the joint portion between the horizontal piece A2 of the two angle members A and the rectangular portion of the fixing plate 32, bolt holes that connect the horizontal piece A2 and the fixing plate 32 are formed at positions corresponding to the four corners of the rectangular portion. Has been.

  And the bolt hole 16a of the base part 16 of the mounting base 11 is made to correspond to these bolt holes, and the mounting base 11 is being fixed to the fixing plate 32 via the predetermined | prescribed bolt and nut.

  The apparatus for removing a ground wire suspension clamp according to the present invention can be widely used for various operations performed by lifting and temporarily holding a ground wire upward in a steel tower.

It is a perspective view which shows the state which attached the mounting stand to the front-end | tip part of a brace. It is a perspective view which shows the state which attaches a mounting base to the front-end | tip part of a bracelet, and supports the ground wire with two stretchers. It is a perspective view which shows the state which removed the suspension clamp from the arm metal in the state which attached the mounting base to the front-end | tip part of an arm metal, and is supporting the ground wire with two tension | pulling wires. The removal process of the suspension clamp using the suspension device for the ground wire suspension clamp is shown. (A) is a side view showing a state where the grounding work is performed, and (b) is a mounting base attached to the tip of the armrest. (C) is a side view showing a state in which the mounting base is attached to the tip of the armrest, and the ground wire is supported by two wire-drawing devices, and (d) is a side view of the mounting base. It is a side view which shows the state which attached to the front-end | tip part of gold | metal | money, and removed the suspension clamp from the arm metal in the state which is supporting the ground wire with two tension | pulling wires. (A) is a front view, (b) is a rear view, (c) is a plan view, (d) is a side view, and (e) is a perspective view as seen from the rear side. f) is a perspective view seen from the front side. The structure of the mounting base which fixes the base part by a horizontal plate to the lower end of a standing leg part is shown, (a) is a front view, (b) is a rear view, (c) is a top view, (d) (E) is the perspective view seen from the back side, (f) is the perspective view seen from the front side. It is a perspective view which shows the state which attached to the front-end | tip part of a brace via the fixed board the mounting stand which has fixed the base part by a horizontal plate to the lower end of a standing leg part. It is a perspective view which shows the state which is supporting the ground wire by the suspension clamp attached to the lower surface of a bracelet. It is a side view which shows the conventional construction method which temporarily supports a ground wire using a cam along and a chain block.

Explanation of symbols

A ... Angle member A1 ... Vertical piece A2 ... Horizontal piece P ... Suspension clamp Q ... Arm metal L ... Ground wire 1 ... Suspension device mounting bracket 2 ... Single link 3 ... Connecting bracket 4 ... Receiving bracket 5 ... Overhead bracket 6 ... Groove 7 ... Fall-off prevention plate 8 ... Cam along 9 ... Chain block 10 ... Chain 11 ... Mounting base 12 ... Standing leg 12a ... Strip 12b ... Strip 12c ... Opening 12d ... Reinforcement plate 13 ... Horizontal arm 13a ... Hole DESCRIPTION OF SYMBOLS 14 ... Clamping piece 14a ... Supporting plate part 14b ... Long hole 15 ... Reinforcing rib 16 ... Pedestal part 16a ... Bolt hole 17 ... Clamping piece 21 ... Wire tensioner 22 ... Hanging bracket 23 ... Base frame 24 ... Hanging bracket 25 ... Movement Frame 26 ... Wire 27 ... Rotating drum 28 ... Ratchet gear 29 ... Handle 30 ... Pulley 31 ... Fixing bolt 32 ... Fixing plate

Claims (1)

  A suspending device for a terrestrial suspension clamp, which is used to temporarily lift a ground wire supported by a suspension clamp attached to a bracelet and to remove the suspension clamp, and removes the suspension clamp for the ground wire. The device includes a mounting base comprising a standing leg installed on the upper surface of the arm metal and a horizontal arm projecting from both upper ends of the standing leg corresponding to the attachment position of the suspension clamp on the lower surface of the arm metal. An apparatus for removing a ground wire suspension clamp, wherein a tensioning device capable of lifting and lowering a ground wire is provided at each end of a horizontal arm of a mounting base.

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