JPH10259678A - Fall-off preventive device of steel tower for overhead power transmission cable - Google Patents
Fall-off preventive device of steel tower for overhead power transmission cableInfo
- Publication number
- JPH10259678A JPH10259678A JP9083332A JP8333297A JPH10259678A JP H10259678 A JPH10259678 A JP H10259678A JP 9083332 A JP9083332 A JP 9083332A JP 8333297 A JP8333297 A JP 8333297A JP H10259678 A JPH10259678 A JP H10259678A
- Authority
- JP
- Japan
- Prior art keywords
- tower
- fall
- steel tower
- elevating
- fall prevention
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は,架空送電線用の
鉄塔における墜落防止装置に関し,特に,人が昇降する
ための昇降塔設備からの墜落を防止する墜落防止装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention device for a steel tower for overhead power transmission lines, and more particularly to a fall prevention device for preventing a person from ascending or descending from an elevating tower facility.
【0002】[0002]
【従来の技術】架空送電線用の鉄塔には通常,主として
設備保守の際に人が昇降するための昇降塔設備を設ける
が,一般に,昇降時の安全を確保するために墜落防止設
備を設ける。従来の墜落防止装置は,安全器付き命綱を
所持していることを前提とするものであり,鉄塔の外面
部に設けた梯子等の昇降塔設備に沿って,前記安全器付
き命綱の安全器を係合させるための墜落防止用ガイドレ
ールを鉄塔の外面部に設置している。2. Description of the Related Art Towers for overhead power transmission lines are usually provided with equipment for elevating and lowering the tower mainly for maintenance of equipment, but in general, equipment for preventing falling is provided to ensure safety during lifting and lowering. . The conventional fall prevention device is based on the premise that a lifeline with a safety device is possessed, and the safety device of the lifeline with the safety device is installed along the elevating tower equipment such as a ladder provided on the outer surface of the steel tower. A guide rail for fall prevention is provided on the outer surface of the tower.
【0003】[0003]
【発明が解決しようとする課題】安全器付き命綱の安全
器を墜落防止用ガイドレールに係合させて昇降すると,
安全に昇降できるが,昇降する準備をしていない時に偶
々昇降の必要が生じる場合もあるので,安全器付き命綱
なしに安全に昇降できれば簡便である。本発明は,上記
事情に鑑みてなされたもので,鉄塔自体に墜落防止装置
を具備させて,安全器付き命綱なしでも安全に昇降する
ことを可能とする架空送電線用鉄塔における墜落防止装
置を提供することを目的とする。When a safety device of a lifeline with a safety device is moved up and down by engaging with a fall prevention guide rail,
Although it is safe to go up and down, it may be necessary to go up and down accidentally when you are not preparing to go up and down. Therefore, it is convenient if you can go up and down safely without a lifeline with a safety device. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a fall prevention device for an overhead power transmission line tower that is provided with a fall prevention device on a tower itself and that can safely ascend and descend without a lifeline with a safety device. The purpose is to provide.
【0004】[0004]
【課題を解決するための手段】上記課題を解決する本発
明の架空送電線用鉄塔における墜落防止装置は,鉄塔
に,昇降塔設備を昇降する昇降者を包囲し背もたれとな
る多数の枠体を上下に間隔を置いて固定したことを特徴
とする。According to the invention, there is provided an overhead transmission line steel tower with a fall prevention device for solving the above-mentioned problems, which comprises a plurality of frames which surround a climber who ascends and descends the elevator tower equipment. It is characterized by being fixed at intervals above and below.
【0005】請求項2は,請求項1における昇降塔設備
が梯子状のものであり,この梯子のステップと前記枠体
とでリング状をなすことを特徴とする。A second aspect of the present invention is characterized in that the elevating tower equipment according to the first aspect has a ladder shape, and the steps of the ladder and the frame form a ring shape.
【0006】請求項3は,請求項1における昇降塔設備
が鉄塔の内部を上下に貫通する形で設置されたものであ
ることを特徴とする。A third aspect of the present invention is characterized in that the elevating tower equipment according to the first aspect is installed so as to penetrate vertically inside the steel tower.
【0007】[0007]
【発明の実施の形態】以下,本発明の実施の形態を図1
〜図7に示す実施例を参照して説明する。図1は本発明
の一実施例の墜落防止装置8を備えた架空送電線用の鉄
塔1の正面図,図2は同側面図である。鉄塔1の左右の
腕金1bの先端部には懸垂碍子連4を介して電線2が支
持されている。この実施例は,図3,図4および図5に
明瞭に表わされるように,鉄塔1の内部を上下に貫通す
る形で設置された多数のステップ7aからなる梯子状の
昇降塔設備7を備えた鉄塔1に適用したものである。本
発明の墜落防止装置8は,実施例の場合,図1のA−A
断面図である図3,B−B断面図である図4および図5
に示すように,梯子である昇降塔設備7のステップ7a
の1本1本に対応してそれぞれ,このステップ7aとで
リング状をなして昇降者を包囲し背もたれとなる枠体8
aを等間隔に固定した構成である。前記枠体8aとステ
ップ7aとがなすリングの大きさは,図6に示すよう
に,人が昇降する時に十分な余裕のある大きさとする。
これら昇降塔設備7や墜落防止装置8は,鉄塔1と同じ
構成材料で形成されている。なお,昇降塔設備7(ステ
ップ7a)および墜落防止装置8(枠体8a)は,図4
に2点鎖線で示す位置に設けてもよい。FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to the embodiments shown in FIGS. FIG. 1 is a front view of a tower 1 for an overhead transmission line provided with a fall prevention device 8 according to one embodiment of the present invention, and FIG. 2 is a side view of the same. The electric wires 2 are supported at the tips of the left and right arm members 1 b of the steel tower 1 via suspension chains 4. This embodiment is provided with a ladder-like elevating tower equipment 7 comprising a number of steps 7a installed in a manner penetrating up and down the inside of the steel tower 1 as clearly shown in FIGS. 3, 4 and 5. This is applied to the steel tower 1. In the case of the embodiment, the fall prevention device 8 of the present invention is
FIG. 3, which is a cross-sectional view, FIG. 4, and FIG. 5, which are BB cross-sectional views
As shown in the figure, step 7a of the elevating tower equipment 7 which is a ladder
Each of the frame members 8 forms a ring shape with this step 7a and surrounds the ascending and descending person and serves as a backrest.
a is fixed at equal intervals. As shown in FIG. 6, the size of the ring formed by the frame 8a and the step 7a should be large enough to allow a person to move up and down.
These elevating tower equipment 7 and fall prevention device 8 are formed of the same constituent material as the steel tower 1. The elevating tower equipment 7 (step 7a) and the fall prevention device 8 (frame 8a) are shown in FIG.
May be provided at a position indicated by a two-dot chain line.
【0008】上記の鉄塔1においては,墜落防止装置8
として,梯子状の昇降塔設備7を昇降する昇降者を包囲
し背もたれとなる枠体8aを上下に間隔を置いて固定し
ているので,人が誤って足を踏み外したり,手を滑らせ
たりした場合でも,手足が枠体8aに引っ掛かり,落下
を阻止する作用を奏する。したがって,安全器付き命綱
なしに昇降することが可能である。In the above-mentioned steel tower 1, the fall prevention device 8
As the frame 8a that surrounds the elevating person who goes up and down the ladder-like elevating tower equipment 7 and is fixed at intervals up and down, the person accidentally steps off his / her feet or slips his hand. Even in this case, the limb is caught on the frame 8a and has an effect of preventing the limb from falling. Therefore, it is possible to go up and down without a lifeline with a safety device.
【0009】ところで,鉄塔設計では,電線2が風や地
震で横揺れした時にも電線2と鉄塔1側との間に所定の
電気的離隔距離e(図1参照)が確保されるように設計
する必要があるが,この実施例では,昇降塔設備7およ
び墜落防止装置8が鉄塔1の内部に設置されており,鉄
塔1の外部に設置された設備は一切ないので,所定の電
気的離隔距離eを確保しつつ,線幅R(左右の電線2の
間の間隔)を狭くすることが可能となり,鉄塔の一層の
コンパクト化が実現されている。Incidentally, the tower design is designed such that a predetermined electrical separation distance e (see FIG. 1) is ensured between the electric wire 2 and the tower 1 side even when the electric wire 2 rolls due to wind or earthquake. However, in this embodiment, the elevating tower equipment 7 and the fall prevention device 8 are installed inside the steel tower 1, and there is no equipment installed outside the steel tower 1. The line width R (the interval between the left and right electric wires 2) can be reduced while the distance e is secured, and the tower can be made more compact.
【0010】上記の実施例では,昇降塔設備7として梯
子状のものを設けたが,これに限らず,図7に示すよう
に,ステップボルト9aで構成した昇降塔設備9であっ
てもよい。In the above embodiment, a ladder-like equipment is provided as the elevating tower equipment 7. However, the invention is not limited to this, and as shown in FIG. 7, an elevating tower equipment 9 composed of step bolts 9a may be used. .
【0011】なお,実施例では,鉄塔内部に昇降塔設備
7がある鉄塔1に適用したが,昇降塔設備の位置は特に
限定されるものではなく,通常の鉄塔と同様に鉄塔外面
部に昇降塔設備を設けた鉄塔にも適用可能である。この
場合,枠体8aも鉄塔外面部に固定する。Although the embodiment is applied to the tower 1 having the elevating tower equipment 7 inside the tower, the position of the elevating tower equipment is not particularly limited. It is also applicable to steel towers with tower equipment. In this case, the frame 8a is also fixed to the outer surface of the tower.
【0012】また,実施例では,梯子のステップ7aと
枠体8aとでリング状をなすように構成したが,ステッ
プ7aと枠体8aとが千鳥状に配置されていてもよい。
また,必ずしもステップ7aと枠体8aとが1対1で対
応していなくてもよい。さらに,図7のステップボルト
9aの場合の枠体8aように,枠体のみで独立してリン
グ状をなすものであってもよい。In the embodiment, the step 7a of the ladder and the frame 8a are formed in a ring shape. However, the steps 7a and the frame 8a may be arranged in a staggered manner.
Also, the step 7a and the frame 8a do not necessarily have to correspond one-to-one. Further, as in the case of the frame body 8a in the case of the step bolt 9a in FIG. 7, the frame body alone may be independently formed in a ring shape.
【0013】[0013]
【発明の効果】本発明によれば,昇降塔設備を昇降する
昇降者を包囲し背もたれとなる多数の枠体を上下に間隔
を置いて設けて墜落防止装置を構成したので,昇降者が
誤って足を踏み外したり,手を滑らせたりした場合で
も,必ず手足が枠体に引っ掛かり,有効に落下防止機能
を奏する。このように鉄塔自体に墜落防止装置を備えて
いるので,安全器付き命綱なしに昇降することができ,
昇降者にとって簡便であるとともに,常に安全な昇降が
可能である。According to the present invention, a crash prevention device is constructed by arranging a large number of vertically spaced frames which surround the elevating person ascending and descending the ascending and descending tower equipment. Even if the foot is stepped off or the hand is slipped, the limb is always caught on the frame, and the fall prevention function is effectively provided. Since the tower itself is equipped with a fall prevention device, it can be moved up and down without a lifeline with a safety device.
It is easy for people to ascend and descend and can always safely ascend and descend.
【0014】また,リング状の枠体(または枠体とステ
ップ)が人体を覆うことになるので,活線時の昇降の際
に人体に負荷される電磁界を低減することができる。Further, since the ring-shaped frame (or the frame and the step) covers the human body, it is possible to reduce the electromagnetic field applied to the human body when moving up and down at the time of liveliness.
【0015】また,請求項3のように,昇降塔設備を鉄
塔の内部に設置した場合には,電線と鉄塔側との間に所
定の電気的離隔距離eを確保しつつ,線幅(鉄塔の左右
の電線の間隔)Rを一層狭くすることが可能となり,鉄
塔のコンパクト化を容易に実現することができる。Further, when the elevating tower equipment is installed inside the tower, the line width (tower) can be secured while maintaining a predetermined electrical separation distance e between the electric wire and the tower side. The distance R between the left and right electric wires) can be further reduced, and the tower can be easily made compact.
【図1】本発明の一実施例の墜落防止装置を備えた架空
送電線用の鉄塔の正面図である。FIG. 1 is a front view of a tower for an overhead transmission line provided with a fall prevention device according to an embodiment of the present invention.
【図2】図1の側面図である。FIG. 2 is a side view of FIG.
【図3】図1におけるA−A断面図である。FIG. 3 is a sectional view taken along line AA in FIG. 1;
【図4】図1に置けるB−B断面図である。FIG. 4 is a sectional view taken along line BB in FIG. 1;
【図5】図1等における昇降塔設備および墜落防止装置
の部分を拡大して示した斜視図である。5 is an enlarged perspective view of a portion of the elevating tower equipment and the fall prevention device in FIG. 1 and the like.
【図6】人が上記の昇降塔設備を昇降する時の状態を上
から見た図である。FIG. 6 is a top view of a state in which a person moves up and down the elevating tower equipment.
【図7】本発明をステップボルト状の昇降塔設備に適用
した場合における昇降塔設備および墜落防止装置の斜視
図である。FIG. 7 is a perspective view of an elevating tower facility and a fall prevention device when the present invention is applied to a step bolt-shaped elevating tower facility.
1 鉄塔(架空送電線用鉄塔) 2 電線(架空送電線) 4 懸垂碍子連 7,9 昇降塔設備 7a,9a ステップ 8 墜落防止装置 8a 枠体 DESCRIPTION OF SYMBOLS 1 Steel tower (iron tower for overhead transmission lines) 2 Electric wire (overhead transmission lines) 4 Suspension insulators 7, 9 Elevating tower equipment 7a, 9a Step 8 Fall prevention device 8a Frame
Claims (3)
包囲し背もたれとなる多数の枠体を上下に間隔を置いて
固定したことを特徴とする架空送電線用鉄塔における墜
落防止装置。1. A fall prevention device for an overhead power transmission line tower, wherein a plurality of frames, which surround a person elevating and lowering the tower equipment and serve as a backrest, are fixed to the tower at intervals.
この梯子のステップと前記枠体とでリング状をなすこと
を特徴とする請求項1記載の架空送電線用鉄塔における
墜落防止装置。2. The elevating tower equipment is of a ladder type,
The fall prevention device for an overhead transmission line tower according to claim 1, wherein the step of the ladder and the frame form a ring shape.
通する形で設置されたものであることを特徴とする請求
項1記載の架空送電線用鉄塔における墜落防止装置。3. The fall prevention device for an overhead transmission line tower according to claim 1, wherein the elevating tower equipment is installed so as to vertically penetrate the inside of the tower.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9083332A JPH10259678A (en) | 1997-03-17 | 1997-03-17 | Fall-off preventive device of steel tower for overhead power transmission cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9083332A JPH10259678A (en) | 1997-03-17 | 1997-03-17 | Fall-off preventive device of steel tower for overhead power transmission cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10259678A true JPH10259678A (en) | 1998-09-29 |
Family
ID=13799486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9083332A Pending JPH10259678A (en) | 1997-03-17 | 1997-03-17 | Fall-off preventive device of steel tower for overhead power transmission cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10259678A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105178682A (en) * | 2015-09-10 | 2015-12-23 | 安徽华电工程咨询设计有限公司 | Two-circuit one-sided cut-off cable downlead tangent tower |
CN110984668A (en) * | 2019-11-22 | 2020-04-10 | 国家电网有限公司 | Safe type electric power tower and root structure of bottom thereof |
CN114050500A (en) * | 2021-11-01 | 2022-02-15 | 国网辽宁省电力有限公司丹东供电公司 | Power transmission line is along preventing weighing down track tower climbing manned chair |
-
1997
- 1997-03-17 JP JP9083332A patent/JPH10259678A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105178682A (en) * | 2015-09-10 | 2015-12-23 | 安徽华电工程咨询设计有限公司 | Two-circuit one-sided cut-off cable downlead tangent tower |
CN110984668A (en) * | 2019-11-22 | 2020-04-10 | 国家电网有限公司 | Safe type electric power tower and root structure of bottom thereof |
CN114050500A (en) * | 2021-11-01 | 2022-02-15 | 国网辽宁省电力有限公司丹东供电公司 | Power transmission line is along preventing weighing down track tower climbing manned chair |
CN114050500B (en) * | 2021-11-01 | 2023-08-08 | 国网辽宁省电力有限公司丹东供电公司 | Power transmission line climbing tower manned chair along anti-falling track |
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