JP2010065433A - Scaffold for power transmission steel tower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scaffold for a power transmission steel tower, easily installed on a tower body, a bracket and an insulator string of the steel tower and also improving the degree of freedom in direction of installing a scaffold part in performing the inspection work for the insulator string and the inspection and maintenance work for a power transmission line by miniaturizing the scaffold part and using a rope for installation to the steel tower and the insulator string. <P>SOLUTION: This scaffold for the power transmission steel tower includes: a scaffold body 2 formed of a substantially rectangular plate material; a suspending rope 3 fitted to one end in the longitudinal direction of the scaffold body 2 and wound round the insulator string I, the bracket A or the tower body B; a latch rope 4 latched on the other end in the longitudinal direction of the scaffold body 2 and the tower body B, the bracket A or the insulator string I; and a steady rope 5 stretched over the insulator string I, the bracket A or the tower body B. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a work scaffold on which an operator rides when maintaining and inspecting power transmission lines and insulators in the upper part of a steel tower, and more particularly to a power transmission tower scaffold in which the installation direction of the scaffold can be freely changed.

  Conventionally, when carrying out maintenance and inspection of power transmission lines and insulators at the upper part of the steel tower, work is carried out by attaching work scaffolds there. As work scaffolds to be installed at this high place, for example, overhead ladder-type work scaffolds or rope scaffolding networks have been proposed.

As shown in FIG. 5, the overhead ladder type work scaffold 51 includes a scaffold main body 54 in which a plurality of cross bars 53 are attached between two plate members 52, and a rod-shaped member 55 on one end side in the longitudinal direction of the scaffold main body 54. A hanging hook 56 is attached to the other end, and a mounting bracket 57 such as a bolt and a nut is provided on the other end side. Such an overhead ladder-type work scaffold 51 has a hanging hook 56 hooked on the insulator series I or the like when the insulator series I is inspected, a safety device is attached, and the mounting bracket 57 is fixed to the angle on the tower B side. Installation is complete.
In this overhead ladder type work scaffold 51, the scaffold main body 54 is firmly fixed to the angle of the tower body B with mounting brackets 57 such as bolts and nuts, so that stable inspection work can be performed without shaking during the work. Can be implemented.

Moreover, as a technique comprising a rope or a scaffold net, for example, as in Japanese Patent Application Laid-Open No. 2002-152933 “A construction method using a net scaffold”, one end side of a substantially square net configured with a predetermined mesh with lightweight fibers. Is connected to the tower, and hooks that can be remotely operated and disengaged by operating rods are connected to both corners of the other end. There has been proposed a construction method using a net scaffolding in which a work is carried out by moving, and a hook is opened with an operating rod after the work and the work is removed from a locked object.
As this net scaffolding, at both ends of one side of a substantially square net constructed by a rope of polypropylene spun yarn, the hook part is opened by applying a lifting force to the hanging ring part, and the hanging ring part is in an unloaded normal state. There has been proposed a net scaffolding in which hooks configured to close the buttock are connected and a belt that is bound to a steel tower is provided on the other side of the net.
JP 2002-152933 A

  However, the overhead ladder-type work scaffold 51 has a total length of 2.0 m to 3.0 m, and the total weight of the scaffold main body 54 made of aluminum is fixed to the steel tower T because the metal mounting bracket 57 is used. It is heavy with 13-17kg. For this reason, when transporting to a power transmission tower, which is often found in mountains, the burden on workers is small due to the installation of a temporary road during large-scale construction. However, in the case of small-scale maintenance work or the like, there is also a problem that the burden on the worker is heavy with regard to transportation of the ladder-type work scaffold 51 and installation at a high place.

  In addition, the “construction method using a net scaffold, net scaffold” disclosed in Patent Document 1 is advantageous for a small-scale work to be performed on a rope rope. However, the work is performed on an unstable rope, and a skilled worker can easily work. However, an unskilled worker has a problem that the work is troublesome and dangerous.

  The present invention has been developed to solve such problems. That is, the object of the present invention is to construct the scaffold part in a small size, and to use the rope for installation in the steel tower and the insulator series. An object of the present invention is to provide a scaffold for a power transmission tower that can be easily installed on a body, a brace, and an insulator, and that has an improved degree of freedom in the installation direction of the scaffold portion.

  According to the present invention, when performing maintenance and inspection of the transmission line and the insulator series (I) in the steel tower (T), the tower body (B), the brace (A), and the insulator series (I) of the steel tower (T) A scaffold for a power transmission tower that is detachably installed using a rope, the scaffold main body (2) made of a substantially rectangular plate, and the insulator chain attached to one end in the longitudinal direction of the scaffold main body (2) (I) The suspension rope (3) wound around the armor (A) or the tower body (B), the other end side in the longitudinal direction of the scaffold body (2), the tower body (B), the arm metal (A) or the rope (4) for latching to the lever series (I), and the scaffold body (2) and the lever series (I) to prevent the scaffold body (2) from shaking. There is provided a scaffolding for a power transmission tower comprising a rope (5) for swinging that is hung around a brace (A) or a tower body (B).

For example, the scaffold main body (2) can be provided with a plurality of rope through holes (7) penetrating in the lateral direction, and the hooking rope (4) can be inserted into the rope through holes (7). It is configured.
The scaffold body (2) is provided with a ring (10) for releasably latching the anti-vibration rope (5) at both corners on one end side in the longitudinal direction.
The suspension rope (3) has a base end attached to a corner on one end side in the longitudinal direction of the scaffold body (2), and a hook (8) at the tip.
Hanging ropes (3) having different lengths can be attached to the scaffold body (2).

  In the configuration of the present invention, the scaffold body (2) is installed on the insulator series (I), the armature (A) or the steel tower (T) using the rope (3, 4), and the jumper wire (J) is connected. When carrying out maintenance inspection, wrap the suspension rope (3) of the scaffold body (2) around the distal end of the armrest (A), and attach the hanging rope (4) to the proximal end of the armrest (A). Overhang and install. Furthermore, the installation is completed by hanging the rope (5) for swinging over the tower body (B). Thus, the scaffold main body (2) can be installed at a position below the armrest (A), and the maintenance and inspection work of the jumper wire (J) can be easily performed. Since the flexibility of the installation direction of the scaffold main body (2) is high, it can be used for various inspections and maintenance work on the steel tower (T).

  In addition, as a scaffold for setting up the lever series (I), the suspension rope (3) of the scaffold body (2) is wound around the lever series (I), and the hanging rope (4) is used as the armrest (A ) And install it. Furthermore, the installation is completed by hanging the rope (5) for swinging over the tower body (B). In this way, the scaffold main body (2) can be installed in parallel with the insulator series (I). In particular, since the scaffold body (2) supported by the ropes (3, 4) is further fixed by the anti-vibration rope (5), the operator can work on the stable scaffold.

  In any case, by adjusting the length of the hanging rope (3) and the hanging rope (4), the scaffold main body (2) and the insulator chain (I) or jumper wire (J) The interval can be freely adjusted, and the worker can work on a stable scaffold with a posture according to the work content, and the work accuracy can be improved and the work time can be shortened.

  Further, since the scaffold body (2) has a plurality of through holes (7) for ropes, the scaffold length can be adjusted and fixed by changing the position through which the hooking rope (4) is inserted. Is possible. For example, when the scaffold body (2) is used as a long scaffold, the latching rope (4) is inserted into the rope through hole (7) opened on the most distal side. Conversely, when the scaffold body (2) is used as a short scaffold, the latching rope (4) is inserted into the rope through hole (7) opened on the inside.

  The scaffold for a power transmission tower of the present invention is a simple scaffold in which a compact scaffold body is detachably installed using a rope to a steel tower and an insulator, and the scaffold body includes a hanging rope and a hanging rope, This is a scaffold provided with a rope for preventing the scaffold body from shaking.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a scaffold for a power transmission tower of the present invention, (a) is a plan view, (b) is a side view, (c) is a front view, (d) is a sectional view taken along the line dd, and (e) is a partial view. FIG.
The scaffold 1 for a power transmission tower according to the present invention has a scaffold body 2, a suspension rope 3 attached to one end side in the longitudinal direction of the scaffold body 2, and a hanging rope 4 on the other end side in the longitudinal direction of the scaffold body 2. Is attached, and is further provided with an anti-vibration rope 5 for preventing the scaffold body 2 from shaking. The power transmission tower scaffold 1 is detachably installed on the tower body B, the armature A, or the insulator series I of the tower T when the transmission line (jumper wire J) and the insulator series I in the tower T are inspected and inspected. It is.

  The scaffold body 2 is a scaffold portion made of a substantially rectangular plate made of, for example, aluminum. It is light and strong, and is preferably formed hollow so that it can be easily transported to high places. The material is not limited to aluminum as long as it has a certain degree of rigidity, and other metals or synthetic resin materials can be used.

  Further, as shown in FIGS. 1A and 1B, the scaffold main body 2 is provided with an uneven non-slip structure 6 so that shoes do not slip during work. In the illustrated example, a structure in which the cross-sectional shape of the scaffold main body 2 has a substantially triangular prism shape in the lateral direction is shown. However, the present invention is not limited to this shape, and a bowl-like structure may be provided on the entire surface. Further, a structure in which a wire mesh is stretched around a substantially rectangular frame may be used.

  As shown in FIGS. 1B and 1E, the scaffold main body 2 has a plurality of rope through holes 7 penetrating in the short direction. The hooking rope 4 is inserted into the rope through hole 7. For example, when the scaffold body 2 is used as a long scaffold, the latching rope 4 is inserted into the rope through hole 7 opened on the most distal side (the right end side in the drawing). Conversely, when the scaffold body 2 is used as a short scaffold, the latching rope 4 is inserted into the rope through hole 7 opened on the inner side (the left end side in the drawing). Thus, since the scaffold body 2 of the present invention has a plurality of through holes 7 for ropes, the length of the scaffold, that is, the ropes 3 and 4 can be lifted by changing the position where the hooking rope 4 is inserted. You can adjust the interval.

  The suspension rope 3 is a rope having a function of suspending a part of the scaffold body 2 by being wound around the tower body B, the arm metal A or the insulator series I. The suspension rope 3 is provided with a base end portion attached to a corner portion on one end side in the longitudinal direction of the scaffold main body 2 and a hook 8 at the tip end portion. This suspending rope 3 is covered with a protective rubber tube 9 so as not to damage the rope when it is wound around the tower B, the brace A or the insulator series I.

  It is not always necessary to attach only one suspension rope 3 to one scaffold body 2, and two or three suspension ropes 3 can be attached as shown in FIG. A plurality of suspension ropes 3 having different lengths can be attached to one end side in the longitudinal direction of the scaffold body 2. The length of the hanging rope 3 is adjusted according to the size of the jumper wire J described later. That is, the suspension rope 3 suitable for the work content can be wound around the armrest A.

  The hanging rope 4 is a single rope inserted through the rope through-hole 7 of the scaffold body 2, and its both ends are fixed to the tower body B, the arm metal A or the insulator series I, and the hanging rope 4 described above. Along with the rope 3, the scaffold body 2 is suspended. Various conventional methods and means are used as means for fixing the hanging rope 4 to the tower body B, the arm metal A or the insulator series I.

  The bracing rope 5 is a rope that spans the scaffold main body 2 and the insulator series I, the brace A or the tower body B. The anti-rest rope 5 is provided with a hook 8 at one end of the rope. For example, the rings 10 are provided at both corners on one end side in the longitudinal direction of the scaffold body 2, and the hooks 8 of the swing rope 5 are detachably hooked on the rings 10. As will be described later, the bracing rope 5 has a function of spanning the scaffold body 2 and the lever series I, the brace A or the tower body B to prevent the scaffold body 2 from shaking. In the illustrated example, the ring 10 is provided at both corners on one end side of the scaffold body 2. In order to prevent the swinging of the scaffold main body 2, it is not necessarily limited to one end side in the longitudinal direction of the scaffold main body 2, and the ring 10 or the anti-rest rope 5 is provided at a substantially intermediate position in the longitudinal direction of the scaffold main body 2. It is also possible to attach a member (not shown) for hooking.

  The anti-rest rope 5 can be easily transported by being detachable from the scaffold body 2. Depending on the work contents, when it is not necessary to hang the rope 5 for stopping, this can be omitted, and the time for maintenance and inspection can be shortened.

FIG. 2 shows a state in which the scaffold for the transmission tower is installed on the armature of the tower, (a) is a plan view, and (b) is a side view.
A method of maintaining and inspecting the jumper wire J and the insulator series I using the power transmission tower scaffold 1 will be described. When installing the power transmission tower scaffold 1 as a scaffold for maintenance work of the jumper wire J, the suspension rope 3 of the scaffold body 2 is wrapped around the tip of the armrest A, and the hanging rope 4 Is stretched over the base end of the armrest A. Further, installation of the bracing rope 5 over the tower body B is completed.
Thus, the scaffold main body 2 can be installed at the lower position of the armrest A, and the maintenance and inspection work of the jumper wire J can be easily performed. Since the flexibility of the installation direction of the scaffold body 2 is high, it can be used for various inspections and maintenance work on the steel tower T.

  When a plurality of suspension ropes 3 having different lengths are attached to the scaffold body 2, the suspension rope 3 having a length corresponding to the size of the jumper wire J is wound around the distal end portion of the brace A. Thereby, the operator can maintain and inspect the jumper wire J in an optimum state.

FIG. 3 is a plan view showing a state in which a scaffold for a power transmission tower is installed substantially in parallel with the insulator series.
When installing the power transmission tower scaffold 1 as a scaffold for starting up the ladder series I, the suspension rope 3 of the scaffold body 2 is wrapped around the ladder series I, while the hanging rope 4 is hung on the arm A hand over. Further, the anti-rest rope 5 is also passed over the brace A and the installation is completed. Thus, the scaffold body 2 can be installed so as to be substantially parallel to the insulator series I. In particular, since the scaffold body 2 supported by the ropes 3 and 4 is further fixed by the swing rope 5, the operator can work on the stable scaffold.

4A and 4B are side views showing a state where the power transmission tower scaffolding is installed in parallel with the insulator series, where FIG. 4A shows a state where there is no catenary on the electric wire, and FIG. 4B shows a state where there is a catenary on the electric wire.
In addition, when there is no catenary (inclination) in the electric wire, as shown in FIG. 4A, the rear end of the scaffold body 2 is fixed on the upper part of the angle of the arm A and fixed with the rope 4 for latching. To do. In a state where the electric cable has catenary, the rear end portion of the scaffold body 2 is fixed to the lower portion of the angle of the armrest A with the hooking rope 4 as shown in FIG. Thus, in this invention, since the ropes 3 and 4 are used for the fixing means of the scaffold main body 2, it can be installed so that the inclination of the scaffold main body 2 is in an optimum state.

  In addition, this invention is not limited to embodiment of the invention mentioned above, While using the scaffold main body 2 compactly, the hanging rope 3 and the hanging rope 4 are used for the installation to the steel tower T and the insulator series I. Thus, when the insulator series I is inspected and the power transmission line (jumper line J) is inspected and maintained, the power transmission tower scaffold 1 is easily installed on the tower B, the armature A, and the insulator series I of the steel tower T. Of course, the structure is not limited to that shown in the drawings as long as it is a structure with a high degree of freedom in the installation direction of the scaffold body 2 and can be variously modified without departing from the gist of the present invention.

  The scaffold for a power transmission tower of the present invention can be used not only for a power transmission tower but also for various towers as long as it is necessary to frequently use a scaffold.

The scaffold for power transmission towers of this invention is shown, (a) is a top view, (b) is a side view, (c) is a front view, (d) is a sectional view taken along the line dd, (e) is a partial plan sectional view. It is. The state which installed the scaffold for power transmission towers in the armrest of a steel tower is shown, (a) is a top view, (b) is a side view. It is a top view which shows the state which installed the scaffold for power transmission towers in parallel with the insulator series. It is a side view which shows the state which installed the scaffold for power transmission towers in parallel with the insulator series, (a) is a state without a catenary in an electric wire, (b) is a state with a catenary in an electric wire. It is a perspective view which shows the conventional ladder type work scaffold.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scaffolding for power transmission tower 2 Scaffolding body 3 Hanging rope 4 Hanging rope 5 Locking rope 7 Rope through-hole 8 Hook 10 Ring T Steel tower B Tower tower A Armature I Isogo

Claims (5)

When maintaining and inspecting the power transmission line and insulator series (I) in the tower (T), the tower (B), armature (A), and insulator series (I) of the tower (T) can be attached and detached using a rope. Scaffolding for power transmission towers installed in
A scaffold body (2) made of a substantially rectangular plate,
A suspension rope (3) that is attached to one end side in the longitudinal direction of the scaffold body (2) and is wound around the insulator series (I), the brace (A) or the tower body (B),
A latching rope (4) for hanging on the other end side in the longitudinal direction of the scaffold main body (2) and the tower body (B), the brace (A) or the lever chain (I);
In order to prevent the scaffold body (2) from shaking, the rope (5) for swinging that spans between the scaffold body (2) and the lion chain (I), the brace (A) or the tower body (B) A scaffold for a power transmission tower, comprising:   The scaffold main body (2) is configured such that a plurality of rope through-holes (7) penetrating in the short-side direction are formed, and the hooking rope (4) can be inserted into the rope through-hole (7). The scaffold for a power transmission tower according to claim 1, wherein   The scaffold main body (2) is provided with rings (10) for detachably hooking the anti-rest rope (5) at both corners on one end side in the longitudinal direction. The scaffold for a power transmission tower according to claim 1 or 2.   The suspension rope (3) has a base end attached to a corner on one end side in the longitudinal direction of the scaffold body (2), and a hook (8) at the tip. The scaffold for a power transmission tower according to claim 1.   The scaffold for a power transmission tower according to claim 1 or 4, wherein a suspension rope (3) having a different length is attached to the scaffold body (2).

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