JPH1160193A - Boom structure for high lift working vehicle - Google Patents

Boom structure for high lift working vehicle

Info

Publication number
JPH1160193A
JPH1160193A JP23176397A JP23176397A JPH1160193A JP H1160193 A JPH1160193 A JP H1160193A JP 23176397 A JP23176397 A JP 23176397A JP 23176397 A JP23176397 A JP 23176397A JP H1160193 A JPH1160193 A JP H1160193A
Authority
JP
Japan
Prior art keywords
boom
water
repellent member
aerial work
work vehicle
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
Application number
JP23176397A
Other languages
Japanese (ja)
Inventor
Hiroyuki Fujinobe
博幸 藤延
Hirokuni Ishikawa
博邦 石川
Yoshifusa Tsubone
嘉房 坪根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP23176397A priority Critical patent/JPH1160193A/en
Publication of JPH1160193A publication Critical patent/JPH1160193A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent insulation performance from decreasing in the rain by covering surface of a boom with a water-repellent member made of solid material with water-repellence. SOLUTION: The surface of a third boom 5 for a high lift working vehicle which has an insulation member 11 on its outer periphery is covered with a water-repellent member 10 made of a solid material with water-repellence. The solid material with water-repellence is also used for a boom cover 8. The water-repellent member 10 is adhered to the boom 5 such that contact angle of water to the material is larger than 90 degree, and the member is formed sheet-like and spirally wraps the boom. The sheet-shaped water-repellent member 10 is divided into plural sheets and may be adhered to the boom orthogonally or diagonally to the central axis of the boom. Because the water-repellent member 10 covers the surface of the boom 5 and water-repellence is provided on the surface of the boom, even when rainwater enters a boom cover in the rain, leak current can be restrained equivalently to dry time.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は高圧配電線の配電工
事に用いられる高所作業車のブーム構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boom structure of an aerial work vehicle used for distribution work of a high-voltage distribution line.

【0002】[0002]

【従来の技術】高圧配電線の配電工事のために、高所作
業車が使用される。高所作業車は、高電圧配電線を扱う
ため、高所作業車のバケットで配電作業をする作業者お
よび、車体に触れた人の安全のために、感電事故対策が
必要である。高所作業車による配電作業時に、感電事故
が発生すると考えられる状態の1つとして、高所作業車
のバケット部が、作業時に高電圧配電線に触れ、バケッ
ト部の土台となっている車体にも高電圧が印加された状
態で、人が車体に触れた場合が考えられる。この場合、
車体に触れた人の足元が、大地に接触していると、人体
を通り大地へ電流が流れる。労働安全衛生法では、0.
5mA以下に抑えるように規定されており、高所作業車
においても、人体に流れる電流をこの値以下に抑えてい
る。しかし、降雨時に、ブーム表面を雨水が流れた場
合、雨水は導電性をもつため、高所作業車のバケット部
が、作業時に高電圧配電線に触れると、ブーム表面に付
着した雨水を介して、バケット部からバケット部の土台
となっている車体へ電流が流れる。したがって、 感電事
故の防止対策をブームの一部を絶縁材にすることのみで
おこなった場合、降雨時には、ブームの絶縁材は絶縁物
としての機能を果たさず、ブームを絶縁材で構成するだ
けでは、降雨時の感電事故を防止することができない。
この対策として、ブームの一部を、カバーで覆い、 ブー
ムの一部に雨水が付着することを防ぎ、風などにより、
ブームカバー内側に入る少量の雨水に対しては、ブーム
カバー内およびその近傍の絶縁材料表面にシリコンコン
パウンドを塗布することで、降雨時の感電事故を防止し
ていた(特願平8-276671)。図7は高所作業車の全体構
成を示す側面図である。1は作業車、2はブーム部、3
はバケット部、4は作業者である。ブーム部2は、第1
ブーム7、第2ブーム6、第3ブーム5、ブームカバー
8よりなっている。図8は第3ブームの部分側断面図を
示している。これは絶縁材11から形成されており、絶
縁材11の表面にシリコンコンパウンド9を塗布してい
る。したがって、第3ブーム表面は撥水性を有し、降雨
時において、カバー内に少量の雨水が浸入してきた場合
も絶縁性能が低下せず、感電事故を防止することができ
る。
2. Description of the Related Art Aerial work vehicles are used for power distribution work of high-voltage distribution lines. Since the aerial work vehicle handles high-voltage distribution lines, it is necessary to take measures against electric shock accidents for the safety of workers who perform power distribution work with the bucket of the aerial work vehicle and those who touch the vehicle body. One of the situations in which an electric shock accident may occur during power distribution work by an aerial work vehicle is that the bucket portion of the aerial work vehicle touches a high-voltage distribution line during the work and the It is also conceivable that a person touches the vehicle body with the high voltage applied. in this case,
When the foot of a person touching the vehicle body is in contact with the ground, a current flows through the human body to the ground. According to the Industrial Safety and Health Law, 0.
It is regulated so as to be 5 mA or less, and the current flowing through the human body is also suppressed to this value or less even in a high work vehicle. However, when rainwater flows on the boom surface during rainfall, the rainwater has conductivity, and when the bucket section of the aerial work platform touches the high-voltage distribution line during work, the rainwater adheres to the boom surface. Then, an electric current flows from the bucket portion to the vehicle body serving as the base of the bucket portion. Therefore, if measures to prevent an electric shock were taken only by using a part of the boom as an insulating material, during rainfall, the boom insulating material would not function as an insulator, and it would not be sufficient to simply configure the boom with insulating material. , Can not prevent electric shock accidents during rainfall.
As a countermeasure, cover a part of the boom with a cover to prevent rainwater from adhering to a part of the boom.
For a small amount of rainwater entering the inside of the boom cover, a silicon compound was applied to the surface of the insulating material inside and near the boom cover to prevent electric shock during rainfall (Japanese Patent Application No. Hei 8-276671). . FIG. 7 is a side view showing the overall configuration of the aerial work vehicle. 1 is a work vehicle, 2 is a boom section, 3
Is a bucket section, and 4 is an operator. The boom section 2
It comprises a boom 7, a second boom 6, a third boom 5, and a boom cover 8. FIG. 8 shows a partial side sectional view of the third boom. This is made of an insulating material 11, and the silicon compound 9 is applied to the surface of the insulating material 11. Therefore, the surface of the third boom has water repellency, so that even when a small amount of rainwater enters the cover during rainfall, the insulation performance does not decrease and an electric shock accident can be prevented.

【0003】[0003]

【本発明が解決しようとする課題】ところが、このよう
な方法によると、シリコンコンパウンドの塗布は、現場
で行われているため、塗布量や塗布の均一性は作業者に
依存しており、塗布量の不足や塗布ムラが生じて、撥水
性が低下し、降雨時の絶縁性能の低下の原因となる恐れ
がある。また、シリコンコンパウンドは粘着性があるた
め、時間の経過とともに、シリコンコンパウンド表面に
塵埃が付着し、その撥水性が低下し、降雨時の絶縁性能
が低下する。塵埃が導電性である場合には、乾燥状態で
も、絶縁性能が失われ、感電事故の原因となる。そこ
で、本発明はメンテナンスの作業性が良く、ブーム表面
に均一な撥水性を付与することができ、かつ、ブーム表
面に塵埃が付着せず、長期にわたってブーム表面の撥水
性を維持し、降雨時において、絶縁性能が低下しない高
所作業車のブーム構造を提供することを目的とする。
However, according to such a method, since the application of the silicon compound is performed on site, the application amount and the uniformity of the application depend on the operator, and Insufficient amounts and uneven coating may occur, resulting in reduced water repellency and reduced insulation performance during rainfall. Further, since the silicon compound is sticky, dust adheres to the surface of the silicon compound with the elapse of time, the water repellency of the silicon compound decreases, and the insulation performance during rainfall decreases. If the dust is conductive, the insulation performance is lost even in a dry state, which may cause an electric shock accident. Therefore, the present invention has good workability for maintenance, can impart uniform water repellency to the boom surface, and does not adhere to the boom surface, maintains the water repellency of the boom surface for a long time, An object of the present invention is to provide a boom structure of a high-altitude work vehicle in which insulation performance is not reduced.

【0004】[0004]

【課題を解決するための手段】上記課題を達成するため
本発明は、少なくとも外周部に絶縁材料をもつを備えた
高所作業車のブーム構造において、前記ブームの表面を
撥水性を有する固体材料からなる撥水部材で覆う構造に
している。また、前記撥水部材は、その材料に対する水
の接触角が90度以上とし、シート状にして螺旋状に、
かつ、ラップするように、前記ブームに貼付してもよ
い。また、前記シート状の撥水部材は、複数枚に分割さ
れ、かつブームの中心軸に対し直角あるいは斜めに貼付
してもよい。 また、前記複数枚に分割されたシート状
の撥水部材は、それぞれ厚さが異なっており、その継ぎ
目に段差部ができるように貼付してもよい。このような
手段により、ブーム表面に均一に撥水性を付与できるの
で、メンテナンスの作業性がよい。塵埃が表面に付着す
ることがないので、長期にわたって信頼性が高い。段差
部により水の繋がりがなくなり、降雨時の絶縁性能がよ
く安全である。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a boom structure for an aerial work vehicle provided with an insulating material at least on an outer peripheral portion, wherein the surface of the boom is made of a solid material having water repellency. The structure is covered with a water-repellent member made of The water-repellent member has a contact angle of water to the material of 90 degrees or more, and is formed into a sheet and spirally.
And it may be affixed to the boom so as to wrap. Further, the sheet-like water-repellent member may be divided into a plurality of sheets and affixed at right angles or obliquely to the center axis of the boom. Further, the sheet-shaped water-repellent members divided into a plurality of sheets may have different thicknesses, and may be stuck so that a step portion is formed at the joint. By such means, the water repellency can be uniformly applied to the boom surface, so that maintenance workability is good. Since dust does not adhere to the surface, reliability is high for a long time. Due to the steps, the connection of water is lost, and the insulation performance during rainfall is good and safe.

【0005】[0005]

【発明の実施の形態】以下、本発明の実施例を図に基づ
いて説明する。 (第一実施例)図1は本発明の第1実施例を示す高所作
業車の第3ブームの部分側断面図である。図1におい
て、5は第3ブーム、11は第3ブームの基部を形成す
る絶縁部材、10は撥水性を有する固体材料からなる撥
水部材、8はブームカバーである。なお、撥水性を有す
る固体材料は、ブームカバー8にも用いている。この撥
水部材10の材質は、水の接触角および注水時の水の繋
がりの観察により撥水性を調べて選定した。注水時の水
の繋がりの観察は、各材料を鉛直方向に対し、45度傾
けて固定し、材料表面に対し90度の角度で、材料表面
での注水量の垂直成分が3mm/minとなるように、
注水ノズル(ノズルはJEC−0201で規定)を介
し、水道水を注水し、水滴が流れ落ちる際に水滴の後ろ
(上方)に、100mm以上の尾を曳くかどうかを観察
したものである。その結果を表1に示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a partial side sectional view of a third boom of an aerial work vehicle showing a first embodiment of the present invention. In FIG. 1, reference numeral 5 denotes a third boom, 11 denotes an insulating member forming a base of the third boom, 10 denotes a water-repellent member made of a water-repellent solid material, and 8 denotes a boom cover. Note that a solid material having water repellency is also used for the boom cover 8. The material of the water repellent member 10 was selected by examining the water repellency by observing the contact angle of water and the connection of water at the time of water injection. The observation of the connection of water at the time of water injection is as follows. Each material is fixed at an angle of 45 ° with respect to the vertical direction, and at a 90 ° angle to the material surface, the vertical component of the water injection amount on the material surface is 3 mm / min. like,
Tap water is injected through a water injection nozzle (the nozzle is defined by JEC-0201), and it is observed whether or not a tail of 100 mm or more is pulled behind (above) the water droplet when the water droplet flows down. Table 1 shows the results.

【0006】[0006]

【表1】 [Table 1]

【0007】この表から、水の接触角が少なくとも88
度以上あれば、水の繋がりを防止できることがわかる。
また、Wenzelの式(北原文雄:界面・コロイド化
学の基礎、第8章「ぬれ」、講談社、1994年)によ
れば、平滑面においての接触角が90度未満の場合、表
面が荒れるとその接触角は小さくなるのに対し、90度
以上であれば、表面が荒れても、接触角は不変あるいは
大きくなる。このことから、高所作業車のブーム表面に
適用した場合、物理的な要因により、時間の経過ととも
に表面が荒れてくる可能性があるため、長期間撥水性を
維持するには、接触角が90度以上あることが好まし
い。
From this table, it can be seen that the contact angle of water is at least 88.
It is understood that the connection of water can be prevented if the temperature is higher than the degree.
Also, according to Wenzel's formula (Fumio Kitahara: Basics of Interface and Colloid Chemistry, Chapter 8, "Wetting", Kodansha, 1994), when the contact angle on a smooth surface is less than 90 degrees, the surface becomes rough. On the other hand, if the contact angle is 90 degrees or more, the contact angle is unchanged or large even if the surface is rough. For this reason, when applied to the boom surface of an aerial work vehicle, the surface may become rough over time due to physical factors. It is preferably 90 degrees or more.

【0008】次に、実際の高所作業車のブームの表面
に、本発明を適用し、最終的な判断基準である、注水時
の漏洩電流の測定を行いその効果を調べた。撥水部材1
0はPTFE系のニトフロンR粘着テープNo.901
(日東電工株式会社の商品名)であり、絶縁部材11で
構成された第3ブーム5の表面に貼付されている。図2
は注水試験時の漏洩電流−電圧特性の結果の一例であ
る。45度の角度で設置された1mのブームに、前記注
水ノズルを用い、絶縁ブーム表面でその垂直成分が3m
m/minとなるように、人工雨水をかけながら測定し
たものである。本実施例は、22kV配電線の工事に使
用する高所作業車に適用することを考えている。したが
って、前記労働安全衛生法に定められているように、電
路電圧(最大23kV)の2倍の46kV印加時におい
て、漏洩電流を0.5mA以下にする必要がある。同図
より、ブーム表面が比較例であるGFRPの場合には、
印加電圧40kVにおいて、漏洩電流が0.7mAを越
えているのに対し、本実施例を用いた場合には、46k
V印加時の注水時の漏洩電流を乾燥時と同じレベル、つ
まり、0.5mA以下に抑えられているのことがわか
る。このような構造によれば、降雨時において、風の影
響などにより、ブームカバーの内側に浸入した少量の雨
水やブームカバーに覆われていない第3ブーム5に降り
注いだ雨水は、撥水部材10の表面に付着するが、撥水
性が高いため雨水は独立した小さな球状となり、撥水部
材10の表面を伝わり流れ落ちる。このため、雨水が金
属で構成されている第2ブーム(図示せず)までつなが
ることによる導電路の形成を防止することができる。し
たがって、降雨時においても、絶縁特性が低下すること
がない。
Next, the present invention was applied to the surface of a boom of an actual aerial work vehicle, and a final determination criterion, that is, a leakage current at the time of water injection was measured to examine its effect. Water repellent member 1
0 is a PTFE-based Nitoflon® adhesive tape No. 901
(Trade name of Nitto Denko Corporation), which is attached to the surface of the third boom 5 composed of the insulating member 11. FIG.
Is an example of the result of the leakage current-voltage characteristic at the time of the water injection test. The above-mentioned water injection nozzle was used for a 1 m boom installed at an angle of 45 degrees, and the vertical component was 3 m on the surface of the insulating boom.
It was measured while applying artificial rainwater so as to be m / min. This embodiment is intended to be applied to an aerial work vehicle used for construction of a 22 kV distribution line. Therefore, as specified in the Occupational Safety and Health Law, it is necessary to reduce the leakage current to 0.5 mA or less when 46 kV, which is twice the circuit voltage (23 kV at maximum), is applied. From the figure, when the boom surface is GFRP which is a comparative example,
At an applied voltage of 40 kV, the leakage current exceeds 0.7 mA.
It can be seen that the leakage current at the time of water injection at the time of applying V is suppressed to the same level as that at the time of drying, that is, 0.5 mA or less. According to such a structure, at the time of rainfall, a small amount of rainwater that has entered the inside of the boom cover due to the influence of the wind or the like and the rainwater that has fallen on the third boom 5 that is not covered by the boom cover is discharged by the water-repellent member 10. However, rainwater becomes an independent small sphere because of high water repellency, and flows down along the surface of the water repellent member 10. Therefore, it is possible to prevent the formation of the conductive path due to the rainwater leading to the second boom (not shown) made of metal. Therefore, even during rainfall, the insulation characteristics do not deteriorate.

【0009】以上は、撥水部材10としてPTFEのシ
ートを用いた例について述べたが、PFA、FEP、E
TFEなど撥水性を有するシートや塗布後に表面が硬化
する撥水部材を塗布した場合にも同様な効果が得られ
た。また、撥水部材10は、シリコンコンパウンドと異
なり、 表面に粘着性がないため、塵埃がその表面に付着
することが無く、長期にわたって撥水性を維持すること
ができる。特に、水の接触角が90度以上の撥水性を有
する固体材料を用いた場合には、表面が荒れても、接触
角は低下せず、さらに長期にわたって撥水性を維持でき
る。 また、シリコンコンパウンドと異なり、長期にわ
たって撥水性が維持できるため、あらかじめ高所作業車
製造時に処理することができる。このことにより、シリ
コンコンパウンドを現場で作業者が塗布する構造に比
べ、ブーム表面に均一に撥水性を付与することができ
る。また、撥水性を有する固体材料として、撥水性を有
するシートを用いた場合には、より簡単に均一にブーム
表面に撥水性を付与することができる。さらに、何らか
の原因により、性能が低下した場合には、シートのみを
交換することが可能で、メンテナンスが容易である。
In the above, an example was described in which a PTFE sheet was used as the water-repellent member 10, but PFA, FEP, E
Similar effects were obtained when a water-repellent sheet such as TFE or a water-repellent member whose surface hardens after coating was applied. Further, unlike the silicon compound, the water-repellent member 10 has no tackiness on the surface, so that dust does not adhere to the surface and can maintain the water-repellency for a long time. In particular, when a water-repellent solid material having a contact angle of water of 90 ° or more is used, even if the surface is roughened, the contact angle does not decrease and the water repellency can be maintained for a long time. Further, unlike silicon compounds, since water repellency can be maintained for a long period of time, it can be treated beforehand at the time of manufacturing an aerial work vehicle. This makes it possible to impart water repellency to the surface of the boom more uniformly than a structure in which a worker applies the silicon compound on site. When a water-repellent sheet is used as the water-repellent solid material, the water-repellency can be more easily and uniformly applied to the boom surface. Further, if the performance deteriorates for some reason, only the seat can be replaced, and maintenance is easy.

【0010】(第2実施例)図3は本発明の第2実施例
を示す第3ブームの部分側面面図、図4は図3の側断面
図である。12はシート状の撥水部材で、絶縁部材11
の上方から螺旋状に、かつラップするように貼付されて
いる。14は段差部部である。本実施例における雨水の
振る舞いを、図5の模式図に沿い説明する。シート状の
撥水部材12の表面に付着した雨水13は、独立した球
状となってその表面を流れ落ち、シートラップ部の段差
部14に到達し、その段差部14にそって移動し、ブー
ムの側面に達する(図5(a))。ブーム側面に達した
雨水13は、ブーム側面に沿って流れ落ち、側面下部に
達するとそこから地表に落下する(図5(b)。すなわ
ち、この段差部14を設けることによって、繋がった雨
水13を小さな水滴に分離している。この効果は、シー
ト状の撥水部材12を、複数枚に分割し、その継ぎ目に
段差部が出来るように、貼付した場合にも同様である。
このような構造にすれば、雨水13の流れの方向を制御
でき、第2ブームまで雨水がつながることを、より効果
的に防止することができる。このため、ブームおよびブ
ームカバーを小型化した場合やブームカバーを取り除い
た場合にも、降雨時の絶縁性能が低下を防ぐことができ
る。 (第3実施例)図6は本発明の第3実施例を示す第3ブ
ームの部分側断面図である。撥水部材12は厚みの異な
るシート状の撥水部材12’からなる。撥水部材12の
厚みが異なるので、第2実施例と同様に段差部14が形
成され、雨水13がつながることなくこから地表に落下
する。なお、第1・第2の実施例は、三段式のブーム構
造をもつ高所作業車の例であるが、本発明は二段、四
段、あるいはそれ以上の多段構造からなる高所作業車の
ブームに適用することも可能である。また、本実施例で
用いたバケット部の代わりに、つり上げ装置等を設置
し、作業者は、地上あるいは車内から操作を行う高所作
業車についても同様の効果がある。
(Second Embodiment) FIG. 3 is a partial side view of a third boom showing a second embodiment of the present invention, and FIG. 4 is a side sectional view of FIG. Reference numeral 12 denotes a sheet-like water-repellent member,
Is attached in a spiral and wrapped from above. Reference numeral 14 denotes a step portion. The behavior of rainwater in this embodiment will be described with reference to the schematic diagram of FIG. The rainwater 13 attached to the surface of the sheet-like water-repellent member 12 becomes an independent sphere and flows down the surface, reaches the step portion 14 of the sheet wrap portion, moves along the step portion 14, and moves along the boom. It reaches the side (FIG. 5 (a)). The rainwater 13 that has reached the side of the boom flows down along the side of the boom, and when it reaches the lower part of the side, falls from there to the surface of the ground (FIG. 5B). This effect is the same as when the sheet-like water-repellent member 12 is divided into a plurality of sheets, and the sheet-like water-repellent member 12 is attached so that a step is formed at the joint.
With such a structure, the direction of the flow of the rainwater 13 can be controlled, and the connection of the rainwater to the second boom can be more effectively prevented. Therefore, even when the boom and the boom cover are reduced in size or the boom cover is removed, it is possible to prevent the insulation performance during rainfall from lowering. (Third Embodiment) FIG. 6 is a partial side sectional view of a third boom showing a third embodiment of the present invention. The water-repellent member 12 is composed of sheet-shaped water-repellent members 12 ′ having different thicknesses. Since the thickness of the water-repellent member 12 is different, a step portion 14 is formed as in the second embodiment, and the rainwater 13 falls from here without being connected. Although the first and second embodiments are examples of an aerial work vehicle having a three-stage boom structure, the present invention relates to an aerial work vehicle having a two-stage, four-stage or more multi-stage structure. It is also possible to apply to a car boom. In addition, a lifting device or the like is installed in place of the bucket unit used in the present embodiment, and the same effect is obtained for an aerial work vehicle where the operator operates from the ground or in the vehicle.

【0011】[0011]

【発明の効果】以上述べたように、本発明によれば、次
のような効果がある。 (1)撥水部材によりブーム表面を覆い、ブーム表面に
撥水性を付与しているので、降雨時にブームカバー内
に、雨水が浸入した場合にも、漏洩電流を乾燥時と同等
に抑えることができる。 (2)シリコンコンパウンドとは異なり、撥水部材の表
面には粘着性がないため、塵埃が表面に付着することが
なく、長期にわたって撥水性を維持することができ、絶
縁性能を維持することができる。 (3)撥水部材として水の接触角が90度以上のものを
用いた場合には、表面の荒れによる撥水性の低下がない
ため、さらに長期にわたって撥水性を維持することがで
き、絶縁性能を維持することができる。 (4)撥水部材は、長期にわたって撥水性を維持するこ
とができるため、高所作業車の製造時に加工することが
でき、現場において、作業者がシリコンコンパウンドを
塗布する構造に比べ、均一にブーム表面に撥水性を付与
することができる。 (5)シート状の撥水部材を用いた場合には、より簡単
に均一にブーム表面に撥水性を付与することができ、性
能低下時にはシートのみを交換できるなどメンテナンス
が容易である。 (6)シート状の撥水部材を螺旋状に、かつラップする
ように、ブームに貼付した場合、あるいはこれを複数枚
に分割し、その継ぎ目に段差部が出来るように、貼付し
た場合には、より効果的に降雨時の絶縁性能の低下を抑
えることが可能であり、ブームカバーの小型化や除去が
可能である。 このように、メンテナンスの作業性が良く、長期にわた
って信頼性が高く、降雨時においても安全な高所作業車
のブーム構造を得る効果がある。
As described above, according to the present invention, the following effects can be obtained. (1) Since the boom surface is covered with a water-repellent member to impart water repellency to the boom surface, even when rainwater enters the boom cover during rainfall, leakage current can be suppressed to the same level as when drying. it can. (2) Unlike the silicon compound, the surface of the water-repellent member has no tackiness, so that dust does not adhere to the surface, water repellency can be maintained for a long time, and insulation performance can be maintained. it can. (3) When a water repellent member having a contact angle of 90 ° or more is used as the water repellent member, the water repellency can be maintained for a longer period of time because the water repellency does not decrease due to the surface roughness, and the insulating performance Can be maintained. (4) Since the water-repellent member can maintain water-repellency for a long period of time, it can be processed at the time of manufacturing an aerial work vehicle, and is more uniform on site than when a worker applies a silicon compound. Water repellency can be imparted to the boom surface. (5) When a sheet-shaped water-repellent member is used, the water-repellency can be more easily and uniformly applied to the boom surface, and maintenance is easy such that only the sheet can be replaced when the performance is deteriorated. (6) When the sheet-like water-repellent member is attached to the boom so as to spiral and wrap, or when the sheet-like water-repellent member is divided into a plurality of sheets and attached so that a step portion is formed at the joint thereof. In addition, it is possible to more effectively suppress a decrease in insulation performance during rainfall, and it is possible to reduce the size and removal of the boom cover. As described above, there is an effect that the boom structure of the aerial work vehicle can be easily maintained, has high reliability over a long period of time, and is safe even during rainfall.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1実施例である高所作業車の第3ブ
ームの構造を示す部分側断面図である。
FIG. 1 is a partial sectional side view showing a structure of a third boom of an aerial work vehicle according to a first embodiment of the present invention.

【図2】本発明の印加電圧と漏洩電流の関係を示すグラ
フである。
FIG. 2 is a graph showing a relationship between an applied voltage and a leakage current according to the present invention.

【図3】本発明の第2実施例である高所作業車の第3ブ
ームの構造を示す部分側断面図である。
FIG. 3 is a partial side sectional view showing the structure of a third boom of an aerial work vehicle according to a second embodiment of the present invention.

【図4】図3の部分側断面図である。FIG. 4 is a partial side sectional view of FIG. 3;

【図5】本発明の第2実施例における、雨水の流れの様
子を表す模式図である。
FIG. 5 is a schematic diagram illustrating a flow of rainwater according to a second embodiment of the present invention.

【図6】本発明の第3実施例である高所作業車の第3ブ
ームの構造を示す部分側断面図である。
FIG. 6 is a partial side sectional view showing the structure of a third boom of an aerial work vehicle according to a third embodiment of the present invention.

【図7】ブームカバー構造をもつ高所作業車を示す全体
側面図である。
FIG. 7 is an overall side view showing an aerial work vehicle having a boom cover structure.

【図8】従来の高所作業車の第3ブームの構造を示す部
分側断面図である。
FIG. 8 is a partial sectional side view showing the structure of a third boom of a conventional aerial work vehicle.

【符号の説明】[Explanation of symbols]

1:作業車 2:ブーム部 3:バケット 4:作業者 5:第3ブーム 6:第2ブーム 7:第1ブーム 8:ブームカバー 9:シリコンコンパウンド 10:撥水部材 11:絶縁部材 12、12’:撥水部材(シート状) 13:雨水 14:段差部 1: Work vehicle 2: Boom section 3: Bucket 4: Worker 5: Third boom 6: Second boom 7: First boom 8: Boom cover 9: Silicon compound 10: Water repellent member 11: Insulating members 12, 12 ': Water-repellent member (sheet shape) 13: Rainwater 14: Step

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも外周部に絶縁部材を有する高
所作業車のブーム構造において、 前記ブームは、その表面が撥水性を有する固体材料から
なる撥水部材で覆われていることを特徴とする高所作業
車のブーム構造。
1. A boom structure for an aerial work vehicle having an insulating member at least at an outer peripheral portion, wherein the boom is covered with a water-repellent member made of a solid material having water-repellency. Boom structure for aerial work vehicles.
【請求項2】 前記ブームは、その上端側にバケット等
の作業台が支持される最先端のブームであり、前記上端
側に雨水の付着を防止するブームカバーを備えた請求項
1記載の高所作業車のブーム構造。
2. The height according to claim 1, wherein the boom is a state-of-the-art boom having a worktable such as a bucket supported on an upper end thereof, and a boom cover for preventing adhesion of rainwater is provided on the upper end. Boom structure of work vehicle.
【請求項3】 前記撥水部材は、その部材に対する水の
接触角が90度以上である請求項1または2記載の高所
作業車のブーム構造。
3. The boom structure for an aerial work vehicle according to claim 1, wherein the water-repellent member has a contact angle of water with the member of 90 degrees or more.
【請求項4】 前記撥水部材は、シート状である請求項
1から3のいずれか1項に記載の高所作業車のブーム構
造。
4. The boom structure for an aerial work vehicle according to claim 1, wherein the water-repellent member has a sheet shape.
【請求項5】 前記シート状の撥水部材は、螺旋状に、
かつ、ラップするように、前記ブームに貼付している請
求項4記載の高所作業車のブーム構造。
5. The sheet-like water-repellent member has a spiral shape.
The boom structure for an aerial work vehicle according to claim 4, wherein the boom structure is attached to the boom so as to wrap.
【請求項6】 前記シート状の撥水部材は、複数枚に分
割され、かつブームの中心軸に対し直角または傾斜して
貼付されている請求項4または5記載の高所作業車のブ
ーム構造。
6. The boom structure for an aerial work vehicle according to claim 4, wherein the sheet-like water-repellent member is divided into a plurality of sheets, and is attached at right angles or at an angle to a center axis of the boom. .
【請求項7】 前記複数枚に分割されたシート状の撥水
部材は、それぞれ異なる厚さとし、その継ぎ目に段差部
ができるように、貼付されている請求項6記載の高所作
業車のブーム構造。
7. The boom for aerial work vehicles according to claim 6, wherein the plurality of divided sheet-like water-repellent members have different thicknesses and are affixed so that a step portion is formed at the joint. Construction.
JP23176397A 1997-08-12 1997-08-12 Boom structure for high lift working vehicle Pending JPH1160193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23176397A JPH1160193A (en) 1997-08-12 1997-08-12 Boom structure for high lift working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23176397A JPH1160193A (en) 1997-08-12 1997-08-12 Boom structure for high lift working vehicle

Publications (1)

Publication Number Publication Date
JPH1160193A true JPH1160193A (en) 1999-03-02

Family

ID=16928656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23176397A Pending JPH1160193A (en) 1997-08-12 1997-08-12 Boom structure for high lift working vehicle

Country Status (1)

Country Link
JP (1) JPH1160193A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014160060A (en) * 2013-01-22 2014-09-04 Akita Prefecture Water repellent frame for electric field agitation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014160060A (en) * 2013-01-22 2014-09-04 Akita Prefecture Water repellent frame for electric field agitation

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