JP2012180690A - Vertical work platform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical work platform for allowing a worker to work in a stable attitude.SOLUTION: First-fourth first-fifth steps 12-12, 12-12, 12-12, 12-12, 12-12are attached to the outer peripheral face of a platform support 11 at predetermined spaces along the longitudinal direction of the platform support 11, at the same height from the lower end face of the platform support 11, and at equal intervals along the peripheral direction of the platform support 11. A platform plate 13 is mounted on the platform support 11 while being held by the first-fourth fourth steps 12-12, e.g., out of the first-fourth first-fifth steps 12-12, 12-12, 12-12, 12-12, 12-12.

Description

  The present invention relates to a vertical work scaffold, and more particularly, to a vertical work scaffold suitable for use when working on a jumper portion of an overhead power transmission line tower.

  Conventionally, work on the jumper part of an overhead power transmission line tower (for example, jumper opening work for system change in the case of inspection work or power outage accident) is carried out by an operator who hangs on an electric wire or an insulator or gets out of the body. It is done. In addition, the ladder for the tangent line, which is originally used in a horizontal position, is installed perpendicularly to the armrest of the steel tower, and the worker works on the ladder for the tie line.

  Moreover, in the following patent document 1, the connection part which has a hook part which can be hooked on the horizontal arm metal main material of the armrest of a steel tower is provided in the upper end part of the scaffold main pillar which attached the scaffold board to the lower end part. A working scaffold is disclosed.

  Further, in Patent Document 2 below, a folding step is provided at a predetermined position, and a cylindrical column that is connected so as to be able to transmit a rotational force in the longitudinal direction, and one end of the column is connected to one end of the column. A cylindrical adjustment member that can be connected and has a thread groove formed on the inner surface of the other end, and a thread groove that is screwed to the screw groove of the adjustment member are formed at one end and a jumper at the other end. A hook member formed with a hook for hooking the wire, a fixing member that is provided on the adjustment member and presses and fixes the jumper wire to the hook by screwing the adjustment member and the hook member, and one end of the hook member are connected And a grounding line having the other end inserted through the inside of the adjustment member and the column and connected to the grounding end, and a fixing member provided at the other end of the column and fixed to the armrest of the tower. Bumpers line inspection ladder is disclosed.

JP 2000-324632 A Japanese Utility Model Publication No. 05-046638

  However, the work of the jumper section of the overhead power transmission line tower is carried out by workers who hang on the electric wire or the lion series, get out of the tower body, or get on the ladder for tight lines, so workability is very high There is a problem of being bad.

  In addition, when the work line is installed by placing the ladder for the wire line perpendicularly to the armrest of the steel tower, and the worker works on the work line ladder, the structure of the wire line ladder becomes narrower toward the tip. As a result, the space for workers to put their feet on when working out to the tip becomes very narrow, and the direction of installing the ladder for the wire is determined by the armband. It becomes difficult for a worker to face the work location, and the worker is forced to work in an unreasonable posture. Furthermore, since the ladder for long lines is long and heavy, there is a problem that it is inconvenient to carry when working on overhead power transmission line towers in mountainous areas.

  The work scaffold disclosed in the above-mentioned Patent Document 1 is a ladder for a so-called boat-type arm (a structure in which hooks are hooked on both of two arms) and cannot be used for a box-type arm. Even in the case of the type arm, there is an overhead power transmission line tower that cannot be used depending on the size of the angle between the two arm brackets, and furthermore, because of the angle, it can be installed only at one point, so it is easy to work There is a problem that it cannot be installed.

  The jumper wire inspection ladder disclosed in the above-mentioned Patent Document 2 has a built-in grounding wire for power failure work in the vertical ladder, so the top of the ladder is connected to the jumper wire during work, In this case, the position of the jumper wire and the position of the jumper wire are the same, so that when the worker stands at the tip of the ladder and works on the jumper wire (for example, disconnecting the jumper wire), the work place becomes a step. There is a problem that the worker bends the body and works in an unreasonable posture.

  An object of the present invention is to provide a vertical work scaffold that allows an operator to perform work in a stable posture.

The vertical working scaffold of the present invention is a vertical working scaffold (10) for use by being attached to an overhead power transmission line tower, and is folded upward on the outer periphery of the cylindrical scaffolding pillar (11) and the scaffolding pillar. A plurality of steps (12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12, which are attached to each other and divided into a plurality of steps each having at least three steps. and ₄₁ to 12 _44, 12 ₅₁ to 12 _54), the through-hole so as to be movable in the longitudinal direction of the scaffold post the scaffolding plate and folded upward step of each stage through steps of the respective stages A scaffold plate (13) formed in the center, and a mounting bracket (14) attached to the upper end surface of the scaffolding strut and for attaching the vertical work scaffold to an overhead power transmission line tower, The steps of each stage are the scaffold support Attached to the outer peripheral surface of the scaffolding strut at a predetermined interval along the longitudinal direction of the column, at the same height from the lower end surface of the scaffolding strut, and at equal intervals along the circumferential direction of the scaffolding strut The scaffold plate is held by the step of any one of the steps of the plurality of steps and is attached to the scaffold column.
Here, the scaffold plate includes first and second semicircular plates (13a ₁ , 13a ₂ ) each having a semicircular cutout formed in the center, and the first and second semicircular shapes. A plurality of ring-shaped first to fourth hooks (two or more provided between the semicircular cutouts of the plate) and foldably connected to the first and second semicircular plates ( 13b _{1 to} 13b ₄ ).
A ring-shaped stopper (15) attached to the outer peripheral surface between the lowermost step and the lower end surface of the scaffold strut and having an outer diameter larger than the diameter of the semicircular notch of the scaffold plate. Furthermore, you may comprise.
The upper end portion of the scaffolding strut of one vertical working scaffold and the lower end portion of the scaffolding strut of the other vertical working scaffold can be bolted with a connecting pipe (21) so that the two vertical working scaffolds can be connected. May be.
You may further comprise temporary hooks (31), such as a tool attached to the said scaffolding pillar.

The vertical work scaffold of the present invention has the following effects.
(1) Since the step is provided with a lifting / lowering step function and a scaffolding plate holding function, the scaffolding plate can be placed and held on the step at a position where it is easy to work. Can be secured and the work can be performed in a stable posture, so that the work becomes easy and the efficiency is improved.
(2) The labor load during transportation is lighter than that of ladders for tight wires.

It is a figure which shows the structure of the vertical work scaffold 10 by one Example of this invention. It is a figure which shows the structure of the scaffold board 13 shown in FIG. It is a figure for demonstrating the change of the position of the scaffold board | plate 13 shown in FIG. It is a figure for demonstrating the structure which connects the two vertical working scaffolds 10 shown in FIG. It is a figure which shows a structure when hooks for temporary placement, such as a tool, are attached to the vertical work scaffold 10 shown in FIG.

  For the above purpose, the steps of the steps are arranged at predetermined intervals along the longitudinal direction of the scaffolding strut, at the same height from the lower end surface of the scaffolding strut, and at equal intervals along the circumferential direction of the scaffolding strut. And by forming a through hole in the center of the scaffolding plate so that the scaffolding plate can be moved along the longitudinal direction of the scaffolding strut through each step when the step of each step is folded upward.

Hereinafter, embodiments of the vertical working scaffold of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the vertical working scaffold 10 according to one embodiment of the present invention includes a scaffold column 11 and first to fourth first to fifth steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 _24. , 12 _{31-12 34,} 12 _{41-12 44,} 12 _{51-12 54} (fourth first-stage to fifth stage step 12 _14, 12 _24, 12 _34, 12 _44, 12 ₅₄ is not shown) and, A scaffold plate 13, a mounting bracket 14, and a stopper 15 are provided.

  Here, the scaffolding column 11 has a cylindrical shape and a length of about 2.5 m.

The mounting bracket 14 is attached to the upper end surface of the scaffolding column 11, and as shown by arrows in FIG. 1, the horizontal plate gripping member is slid in the horizontal direction to grip the horizontal plate of the brace main material 1 and the vertical plate gripping member. The vertical work scaffold 10 is attached to the arm metal main material 1 (L-shaped structure) of the overhead power transmission line tower by sliding the arm in the vertical direction to grip the vertical plate of the arm metal main material 1.
As described above, the vertical work scaffold 10 is attached to the main brace 1 (one on one side) by the mounting bracket 14, so that various types of brace (regardless of boat type or box type) can be arranged at any position. The vertical work scaffold 10 can be installed at a position where the worker can easily work.

The first to fourth steps 1 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , and 12 ₅₁ to 1 ₅₄ are the step function for lifting and lowering. It is equipped with a scaffolding board holding function.

Therefore, the 1st to 4th 1st to 4th steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , and 12 _{51 to} 12 ₅₄ Considering the ease of raising and lowering and the stability when the scaffolding plate 13 is placed (the scaffolding plate 13 can be held horizontally), it is used in four directions (one set of four), and the outer periphery of the scaffolding column 11 It is attached to the surface at intervals of about 45 to 50 cm along the longitudinal direction of the scaffolding column 11.

That is, the first to fourth first step steps 12 _{11 to} 12 ₁₄ are arranged on the outer peripheral surface of the upper end portion of the scaffold column 11 at intervals of 90 ° along the circumferential direction of the scaffold column 11 and below the scaffold column 11. It is mounted at the same height from the end face.
The first to fourth second stage steps 12 _{21 to} 12 ₂₄ are positioned about 45 to 50 cm below the first to fourth first stage steps 12 _{11 to} 12 ₁₄ on the outer peripheral surface of the scaffolding column 11. Attached at the same height from the lower end surface of the scaffolding column 11 at intervals of 90 ° along the circumferential direction of the column 11.
The first to fourth third stage steps 12 _{31 to} 12 ₃₄ are positioned about 45 to 50 cm below the first to fourth second stage steps 12 _{21 to} 12 ₂₄ on the outer peripheral surface of the scaffolding column 11. Attached at the same height from the lower end surface of the scaffolding column 11 at intervals of 90 ° along the circumferential direction of the column 11.
The first to fourth fourth step steps 12 _{41 to} 12 ₄₄ are about 45 to 50 cm below the first to fourth third step steps 12 _{31 to} 12 ₃₄ on the outer peripheral surface of the scaffolding column 11. Attached at the same height from the lower end surface of the scaffolding column 11 at intervals of 90 ° along the circumferential direction of the column 11.
The first to fourth fifth stage steps 12 _{51 to} 12 ₅₄ are positioned about 45 to 50 cm below the first to fourth fourth stage steps 12 _{41 to} 12 ₄₄ on the outer peripheral surface of the scaffolding column 11. Attached at the same height from the lower end surface of the scaffolding column 11 at intervals of 90 ° along the circumferential direction of the column 11.

Further, the first to fifth steps 12 ₁₁ , 12 ₂₁ , 12 ₃₁ , 12 ₄₁ , 12 ₅₁ are attached so as to be positioned in a straight line along the longitudinal direction of the scaffold column 11.
Second 1st to 5th steps 12 ₁₂ , 12 ₂₂ , 12 ₃₂ , 12 ₄₂ , 12 ₅₂ , 3rd 1st to 5th steps 12 ₁₃ , 12 ₂₃ , 12 ₃₃ , 12 ₄₃ , 12 _The same applies to ₅₃ and the 4th 1st to 5th steps 12 ₁₄ , 12 ₂₄ , 12 ₃₄ , 12 ₄₄ , ₁₂₅₄ .

Furthermore, the first to fourth steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , and 12 _{51 to} 12 ₅₄ are used during transportation. The step portion is supported by the attachment member so that it can be folded upward so that the scaffold plate 13 can be moved along the longitudinal direction of the scaffold column 11 so that it does not get in the way during the work, and as will be described later. is attached to the outer peripheral surface (see the first to fourth 4-stage step 12 _{41-12 44} in FIG. 3).

The scaffold plate 13 is made of metal and has a diameter of about 90 cm.
Scaffolding plate 13, in order to two-piece structure which makes folding hook linked (combined), as shown in FIG. 2, the first and second semicircular plate 13a _1, 13a _2, ring-shaped First to fourth hooks 13b _{1 to} 13b ₄ are provided.

A semicircular cutout having a radius of about 15 cm is formed at the center of the first and second semicircular plates 13a ₁ and 13a ₂ .
As a result, when the first and second semicircular plates 13a ₁ and 13a ₂ are expanded, a circular through hole is formed in the center of the scaffold plate 13 by the semicircular notches, so that the first through if folded steps of the fourth first-stage to fifth stage step 12 _{11-12 14,} 12 _{21-12 24,} 12 _{31-12 34,} 12 _{41-12 44,} 12 _{51-12 54} upward, The first to fourth first to fifth steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , and 12 _{51 to} 12 ₅₄ pass through the scaffold plate 13. Since the hole can be passed, the scaffold plate 13 can be moved along the longitudinal direction of the scaffold column 11 while being attached to the scaffold column 11.
As a result, workers anchorage plate 13 of the first to fourth topped the first to fourth 4-stage step 12 _{41-14 44} As shown in FIG. 1 for example, after embarked on a vertical working scaffold 10 When it is desired to replace the fifth stage steps 12 _{51 to} 14 ₅₄ with each other, as shown in FIG. 3, after the scaffold plate 13 is lifted, the first to fourth fourth stage steps 12 _{41 to} 14 ₄₄ are stepped. the folded and upward, first to fourth fifth stage alone is decreased anchorage plate 13 as shown by a white arrow in the drawing through the first to fourth 4-stage step 12 _{41-14 44} Steps 12 _{51 to} 14 ₅₄ can be replaced.

The first to fourth hooks 13b _{1 to} 13b ₄ connect the first and second semicircular plates 13a ₁ and 13a ₂ of the scaffold plate 13 so as to be foldable, and the first and second half halves are transported. The circular plates 13a ₁ and 13a ₂ can be folded, and the first and second semicircular plates 13a ₁ and 13a ₂ can be widened during work.

Therefore, the first to fourth hooks 13b _{1 to} 13b ₄ have a ring shape and sandwich the semicircular cutouts of the first and second semicircular plates 13a ₁ and 13a ₂ of the scaffold plate 13. Two are provided.
The first and second semicircular plates 13a ₁ and 13a ₂ of the scaffold plate 13 are formed with through holes for passing the _{first to fourth} hooks 13b _{1 to} 13b ₄ . The second semicircular plates 13a ₁ and 13a ₂ can be folded or expanded by rotating in reverse directions along the _{first to fourth} hooks 13b _{1 to} 13b ₄ .

The stopper 15 is made of a ring-shaped member whose outer diameter is larger than the diameter of the semicircular cutout of the scaffold plate 13, and the first to fourth fifth step steps 12 _{51 to} 14 ₅₄ of the scaffold column 11 and the lower end surface. It is attached to the outer peripheral surface between.
As a result, the scaffold plate 13 has first to fourth first to fifth steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , 12 _{51 for} some reason. be outside 12 _54, by receiving a scaffolding plate 13 by the stopper 15, it is possible to prevent the scaffolding plate 13 from falling to the ground.

By using the vertical working scaffold 10 configured as described above, workers first to the first stage to fifth stage of the 4 steps 12 _{11-12 14,} 12 _{21-12 24,} 12 _{31-12 34} , it is possible to mount 12 _{41-12 44} 12 ₅₁ put anchorage plate 13 in any of 12 _54, it is possible to work in an easy position enters forces toward the waist from the chest of the operator .

When the length of one vertical work scaffolding 10 is not sufficient, such as when used with a large overhead power transmission line tower, a structure is provided in which the mounting bracket 14 is removably attached to the scaffolding pillar 11, and one scaffolding pillar is provided. 11, after removing the mounting bracket 14, as shown in FIG. 4, one scaffold strut 11 is used by using the first and _second bolts 22 ₁ , 22 ₂ and the first and second nuts 23 ₁ , 23 _2. It is only necessary that the two vertical work scaffolds 10 can be connected by bolting the upper end of each of the two and the lower end of the other scaffold column 11 with the connecting pipe 21.

Further, in order to be able to temporarily place a tool bag and various tools at the time of work, as shown in FIG. _21, 12 ₃₁ may be attached between.

Further, the first to fourth steps from the first to the fourth steps 12 _{11 to} 12 ₁₄ , 12 _{21 to} 12 ₂₄ , 12 _{31 to} 12 ₃₄ , 12 _{41 to} 12 ₄₄ , and 12 _{51 to} 12 ₅₄ are performed by the worker. Considering ease of lifting and stability when the scaffolding plate 13 is placed, four directions are used (one set of four, that is, the number of steps in each stage = 4), but three directions are used (three One set, that is, the number of steps in each stage may be 3).

1 arm Kinshu member 10 vertical work scaffolding 11 Scaffolding strut 12 _{11-12 14,} 12 _{21-12 24,} 12 _{31-12 34,} 12 _{41-12 44,} 12 _{51-12 54} first to fourth first-stage through 5 Step 13 Scaffold plate 14 Mounting bracket 15 Stopper 21 Connecting pipes 22 ₁ , 22 ₂ First and second bolts 23 ₁ , 23 ₂ First and second nuts 31 Temporary hook for tools, etc.

Claims (5)

A vertical work scaffold (10) for mounting and use on an overhead power transmission line tower,
A cylindrical scaffolding column (11);
A plurality of steps (12 _{11 to} 12 ₁₄ , 12 _{21) which} are attached to the outer peripheral surface of the scaffolding column so as to be foldable upward and each step is divided into a plurality of steps each having at least three steps. and 12 _24, 12 ₃₁ to 12 _34, 12 ₄₁ to 12 _44, 12 ₅₁ to 12 _54),
When the step of each step is folded upward, the scaffold plate (13) having a through-hole formed in the center so that the scaffold plate can be moved along the longitudinal direction of the scaffold support through the step of each step;
A mounting bracket (14) attached to the upper end surface of the scaffolding column and for attaching the vertical work scaffold to an overhead power transmission line tower;
The steps of each step are at a predetermined interval along the longitudinal direction of the scaffold column, at the same height from the lower end surface of the scaffold column, and at equal intervals along the circumferential direction of the scaffold column, It is attached to the outer peripheral surface of the scaffolding strut,
The scaffold plate is held by the step of any one of the steps of the plurality of steps and attached to the scaffold column;
Vertical working scaffold characterized by that. The scaffold plate is
First and second semicircular plates (13a ₁ , 13a ₂ ) each having a semicircular notch formed in the center;
A ring provided in plural for each of the first and second semicircular plates with the semicircular notch interposed therebetween, and for connecting the first and second semicircular plates so that they can be folded. First to fourth hooks (13b _{1 to} 13b ₄ ),
The vertical working scaffold according to claim 1, comprising:   A ring-shaped stopper (15) attached to the outer peripheral surface between the lowermost step and the lower end surface of the scaffold strut and having an outer diameter larger than the diameter of the semicircular notch of the scaffold plate. The vertical working scaffold according to claim 2, further comprising:   The upper end portion of the scaffolding strut of one vertical working scaffold and the lower end portion of the scaffolding strut of the other vertical working scaffold can be bolted with a connecting pipe (21) so that the two vertical working scaffolds can be connected. The vertical working scaffold according to claim 1, wherein the vertical working scaffold is provided.   The vertical working scaffold according to any one of claims 1 to 4, further comprising a temporary placement hook (31) such as a tool attached to the scaffold strut.

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