J. Inst. Electrostat. Jpn.

, 30, 4 (2006) 185 190⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߦ߅ߌࠆਥⷐนേㇱຠߩା㗬ᕈะ਄ਃဈବ᣿㧖,1㧘ᄢᶆ ᔘ㧖㧘⊕ਣାᒾ㧖㧘᦭శᱞ㓶㧖㧔2006 ᐕ 3 ᦬ 13 ᣣฃઃ; 2006 ᐕ 7 ᦬ 11 ᣣฃℂ㧕

Reliability of Main Moving Components for the Moving Electrode TypeElectrostatic Precipitator
Toshiaki MISAKA*,1, Tadashi OURA* , Nobuhiko SHIROMARU* and Takeo ARIMITSU*(Received March 13, 2006 Accepted July 11,2006)
The reliability of moving components of the moving electrode type electrostatic precipitator was investigated in term ofthe moving method and the shape of collection electrode elements, lifespan of the rotating brushes for removing collected dust,elongation of the chains used to connect movable dust collection electrode elements and the influence of the discharge current
by the elongation. The caterpillar drive method was adopted for the moving dust collection plate. From actual operation,
abrasion of the rotating brushes combined with the flat-plate type movable collection plate element was decreased
approximately one half of the combination of the frame type movable collection plate element. Elongation of the link chains
was affected by particle size and hardness of dusts. Due to the influence of corona current passing through chains, theelongation of the link chains became 2.2 times longer in addition to the effect of the mechanical abrasion from deposited dusts.
Extension of the roller chain decreases drastically in comparison with that of the link chain.
1.

ߪߓ߼ߦ㓸Ⴒ᧼ߩᯏ᪾⊛᭵ᛂߢߪᛄ⪭ߒ࿎㔍ߥߎߣࠍ᣿ࠄ߆ߦߒߚ㧚㔚᳇㓸Ⴒⵝ⟎ߪ㧘ࠟࠬਛߦᶋㆆߔࠆᓸ⚦ߥ࠳ࠬ࠻ߦኻߒߡ߹ߚ㧘㜞ᛶ᛫࠳ࠬ࠻ࠍࡉ࡜ࠪߢᛄ޿⪭ߣߒߡ㓸Ⴒ᧼⴫㕙ࠍᏱ⋥ធ⊛ߦ㕒㔚᳇ജࠍ෸߷ߒߡ᝝㓸㒰෰ߔࠆߩߢ㧘⋭㔚ജߢ࿶ߦᷡᵺߦ଻ߡ߫㧘ㅒࠦࡠ࠽ࠍ㒐ᱛߒߡ㜞ᛶ᛫࠳ࠬ࠻ߩ㓸Ⴒ߇ജ៊ᄬ߇ዊߐ޿․ᓽ߇޽ࠅ㧘ᐢߊᎿᬺឃࠟࠬ↪㓸Ⴒⵝ⟎ߣߒน⢻ߢ޽ࠅ㧘࿁ォࡉ࡜ࠪߪ㓸Ⴒ᧼ߦ㕒㔚᝝㓸ߒߚ࠳ࠬ࠻ߩᛄߡ૶↪ߐࠇߡ޿ࠆ㧚ߒ߆ߒ㔚᳇㓸Ⴒⵝ⟎ߪឃࠟࠬࠍ㔚᳇⊛ߦ⪭ߒലᨐ߇ఝࠇߡ޿ࠆߎߣࠍ␜ߒߚ㧚ಣℂߔࠆේℂ߆ࠄ㧘㓸Ⴒᕈ⢻߇࠳ࠬ࠻㔚᳇ᛶ᛫₸ߩᓇ㗀ࠍฃ⒖േ㔚ᭂᣇᑼߩ႐ว㧘㓸Ⴒ᧼ࠍ⍴ౠ⁁ߦಽഀߒߡ࠴ࠚ࡯ࡦߌࠆ㧚․ߦ㜞ᛶ᛫࠳ࠬ࠻ߢ⊒↢ߔࠆㅒࠦࡠ࠽ߦࠃࠆ㓸Ⴒᕈ⢻ߢㅪ⚿ߒߚ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߥߤߩนേㇱຠࠍ㜞Ớᐲߩ࠳

1㧕ߩૐਅࠍస᦯ߔࠆߎߣߪ㊀ⷐߥ⺖㗴ߣߥߞߡ޿ࠆ 㧚㔚᳇㓸ࠬ࠻ਛߢㅪ⛯ߒߡㆇォߔࠆߎߣߦߥࠆ㧚቟ቯߒߚㆇォߣࡔࡦႲⵝ⟎ߢㅒࠦࡠ࠽ࠍᛥ೙ߒߡ㓸Ⴒᕈ⢻ࠍ㜞ߊ଻ߟᣇᴺߣߒ࠹࠽ࡦࠬߩኈᤃߐࠍ⠨߃ࠆߣนേㇱຠߩା㗬ᕈߩะ਄߇㊀ߡ㧘㓸Ⴒᭂࠍ᭴ᚑߔࠆ㓸Ⴒ᧼ࠍ⒖േน⢻ߦߒߡ᝝㓸࠳ࠬ࠻ጀⷐߣߥࠆ㧚ᧄ⺰ᢥߢߪ(1)⒖േ㔚ᭂᒻ㔚᳇㓸Ⴒⵝ⟎ࠍ↪޿ߡ᷹ࠍㅪ⛯⊛ߦቢో㒰෰ߒߡ㓸Ⴒ᧼ࠍᏱߦᷡᵺߦ଻ߟ⒖േ㔚ᭂቯߒߚ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉ࡜ࠪߩ៺⠻㧘(2)ታ㛎ⵝ

2㧕ᣇᑼ߇޽ࠆ 㧚೨ႎ

3㧕

ߢߪ⒖േ㔚ᭂᣇᑼߩ࠳ࠬ࠻ጀઃ⌕ജߣᛄ⪭ߒᣇᴺ㧘᡼㔚․ᕈߣ࠳ࠬ࠻ጀෘߐ㧘࿁ォࡉ࡜ࠪߩ࠳ࠬ࠻ጀᛄ⪭ߒലᨐ⟎ߢ᷹ቯߒߚ㓸Ⴒᭂ㚟േ↪ߩ࡝ࡦࠢ࠴ࠚ࡯ࡦߣࡠ࡯࡜࠴ࠚ
࡯ࡦߩ៺⠻િ߮㊂ߣ㔚ᵹߩᓇ㗀߅ࠃ߮(3)ታᯏߦ߅ߌࠆ࠴ࠚ
࡯ࡦߩ⏴⠻િ߮㊂ߩ᷹ቯ⚿ᨐߦߟ޿ߡႎ๔ߔࠆ㧚ߦߟ޿ߡታ㛎ᬌ⸛ߒߚౝኈࠍႎ๔ߒߚ㧚㔚᳇㓸Ⴒⵝ⟎ߩ࠳ࠬ࠻ઃ⌕ജߪ࠳ࠬ࠻㔚᳇ᛶ᛫₸߇㜞ߊߥࠆߣᕆỗߦჇടߒߡ㧘2.
2.1

ࠠ࡯ࡢ࡯࠼㧦㔚᳇㓸Ⴒⵝ⟎㧘㜞ᛶ᛫࠳ࠬ࠻㧘⒖േ㔚ᭂᣇᑼ㧘ା㗬ᕈ㧘᡼㔚ടᎿ㧘࠴ࠚ࡯ࡦ㧘៺⠻* 㧔ᩣ㧕ᣣ┙ࡊ࡜ࡦ࠻࠹ࠢࡁࡠࠫ࡯㧔170-8466 ᧲੩ㇺ⼾ፉ඙ർᄢႦ 1-13-2㧕
Hitachi Plant Technologies, Ltd. 1-13-2 Kita-Otsuka,
Toshima-ku, Tokyo, 170-8466 Japan1
toshiaki.misaka.sn@hitachi-pt.com

㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉ࡜ࠪߩ៺⠻⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ᭴ㅧ⒖േ㔚ᭂᣇᑼߩ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉ࡜ࠪߩ៺
⠻㊂ߩ㑐ଥߪ⍹὇ά߈ࡏࠗ࡜↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ࠍ↪޿ߡታ㛎ߒߚ㧚ታ㛎ߦ૶↪ߒߚ⒖േ㔚ᭂᣇᑼ㔚᳇㓸Ⴒⵝ⟎ߩ㔚ᭂ᭴ㅧࠍ࿑ 1 ߦ␜ߔ㧚ᄢኈ㊂ߩឃࠟࠬࠍขࠅᛒ߁㔚᳇㓸Ⴒⵝ⟎ߩ㓸Ⴒᭂߪ᏷ 2.5㨪6 m 㧘㜞ߐ 6㨪15 m ߩ㓸Ⴒ᧼ࠍᄙ

186 (32)30

4

ᢙਗ೉ߦ㈩⟎ߒߚ߽ߩ૶↪ߒߡ޿ࠆ㧚⒖േ㔚ᭂᣇᑼࠍᎿᬺ↪

2006

Driving wheel㔚᳇㓸Ⴒⵝ⟎ߦㆡ↪ߔࠆ႐ว㧘࿕ቯ㔚ᭂᣇᑼߦ඘ᢜߔࠆ᦭ല
ኸᴺߩ㓸Ⴒ᧼ࠍ⒖േߒߥߌࠇ߫ߥࠄߥ޿㧚ታ↪ᕈߩ޽ࠆ⒖േ
Collection zoneน⢻ߥ㓸Ⴒ᧼ᒻ⁁ߣߒߡ⭯᧼ࠍ࡞࡯ࡊ⁁ߦߒߚࡌ࡞࠻ᣇᑼ
4-6㧕

ߥߤ⒳‫ߩޘ‬ᣇᑼ߇⠨߃ࠄࠇߚ߇㧘㓸Ⴒ᧼ߩ㚟േ߇ᦨ߽቟

ቯߒߡ޿ࠆࠠࡖ࠲ࡇ࡜ᣇᑼ 7㧕ࠍᬌ⸛ߒߡታ↪ൻߒߚ㧚㓸Ⴒᭂߪ㓸Ⴒ᧼ࠍ㜞ߐ 700mm ⒟ᐲߩ⍴ౠ⁁ߦಽഀߒߡ㓸

Discharge
electrodeႲᭂࠛ࡟ࡔࡦ࠻ߣߒ㧘ᄙᢙߩ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍ࿕ቯ㊄ౕߢ
Chain
Non-collection zone࠴ࠚ࡯ࡦߦㅪ⚿ߒߡ㓸Ⴒᭂ࡟࡯ࡦࠍ᭴ᚑߒߡ޿ࠆ㧚ߎߩ㓸Ⴒᭂ࡟࡯ࡦࠍ㚟േࡎࠗ࡯࡞ߣਅㇱࡎࠗ࡯࡞ߩ㑆ߢ 0.5㨪1m/min⒟ᐲߩㅦᐲߢ⒖േߔࠆ㧚㓸Ⴒᭂ࡟࡯ࡦߩ㚟േࡎࠗ࡯࡞ߣਅㇱࡎࠗ࡯࡞㑆ߦߪ᡼㔚ᭂ߇⸳⟎ߒߡ޽ࠆ㧚ಣℂࠟࠬߪ᡼㔚ᭂߩ⸳⟎ߒߡ޽ࠆ㓸Ⴒၞࠍᵹࠇࠆ㧚ߎߩ㓸Ⴒၞߢ㓸Ⴒᭂࠛ࡟ࡔࡦ

Chain guide࠻ߦ᝝㓸ߐࠇ࠳ࠬ࠻ߪ㧘ಣℂࠟࠬ߇ᵹࠇߥ޿ࡎ࠶ࡄㇱߦ⒖േߒߡ࿁ォࡉ࡜ࠪߢᛄ⪭ߐࠇࠆ㧚࿁ォࡉ࡜ࠪߪ㓸Ⴒᭂࠛ࡟ࡔࡦ

Collecting electrode࠻ߣߩធ⸅ߢࡉ࡜ࠪ⚛✢ߩᦛ߇ࠅ߿᛬ࠇ߇⊒↢ߒߡࡉ࡜ࠪ

Rotating brush

Lower wheelᓘ߇ᷫዋߔࠆ㧚ߎߩࡉ࡜ࠪߩ៺⠻ߦߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ᒻ⁁࿑1 ⒖േ㔚ᭂᣇᑼߩ⹦⚦᭴ㅧ
Fig. 1 Schematics of the moving electrode section.

߽㑐ଥߔࠆ㧚
2.2

㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩᒻ⁁Fastening hardware࿁ォࡉ࡜ࠪߩ៺⠻ߦᓇ㗀ߔࠆ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩᒻ⁁ߪ㧘(1)࠳ࠬ࠻ߩၸⓍߔࠆࠃ߁ߥಳಲ߇ߥ޿㧘(2)ࡉ࡜ࠪߣߩធ⸅߇
ో㕙ߢ౞Ṗߥߎߣ㧘(3)࠳ࠬ࠻ߩᛄ޿⪭ߣߒ߇ኈᤃߥߎߣ߇ᦸ
߹ࠇࠆ㧚⒖േ㔚ᭂᣇᑼߢಣℂࠟࠬߩ⩄㔚ᤨ㑆ࠍ⠨ᘦߔࠆߣ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ᏷ߪ 2.5 m એ਄߇ᔅⷐߣߥࠆ㧚߹ߚ㓸Ⴒ

2500䌾2,900ᭂࠛ࡟ࡔࡦ࠻ߪ਄ਅㇱࡎࠗ࡯࡞ߢ᳓ᐔߣߥࠆߚ߼㧘೰ᕈ߇ⷐ(a) Frame type dust collection plate element.

᳞ߐࠇࠆ㧚㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ᒻ⁁ࠍᬌ⸛ߒߡ࿑ 2(a)ߩࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߣ࿑ 2(b)ߩࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻
ࠍታ↪ൻߒߚ㧚ࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪࠬ࠹ࡦ࡟ࠬࡊ
3700䌾4,500࡟࡯࠻ߣ⵬ᒝᨒ߆ࠄ᭴ᚑߐࠇ㧘⵬ᒝᨒਛᄩㇱߩขઃߌ㊄ౕߢ(b) Flat-panel type dust collection plate element.

ਔ஥ߩ࠴ࠚ࡯ࡦߦㅪ⚿ߒߡ޿ࠆ㧚ࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ

࿑2 㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩᒻ⁁Fig. 2 Configuration of the collection plate element.

࠻ߪシ㊂ߣ޿߁․ᓽ߇޽ࠆ㧚ࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߦᲧߴߡᨒ᧚ߦࠃࠆಳಲ߇ዋߥ޿᭴ㅧߣߥߞߡ⋡ߢ޽ࠆ㧚ߘߎߢ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㐳ᦼㆇォߦࠃߞ޿ࠆ㧚߹ߚࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪࡈ࡟࡯ࡓဳߡࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߣࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠃࠅ߽೰ᕈ߇ᄢ߈ߊ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ

ࠛ࡟ࡔࡦ࠻ߘࠇߙࠇߦߟ޿ߡ࿁ォࡉ࡜ࠪ៺⠻㊂ࠍ᷹ቯߒߚ㧚᏷ࠍᦨᄢߢ 4,500 mm ߹ߢ᜛ᄢߢ߈ࠆ㧚㓸Ⴒᭂࠛ࡟ࡔࡦ࠻᏷

2.3

ߩ᜛ᄢߦࠃߞߡ⒖േ㔚ᭂㇱߢߩࠟࠬಣℂᤨ㑆ࠍ㐳ߊߢ߈㧘಴ญ࠳ࠬ࠻Ớᐲࠍૐਅߐߖࠆߎߣ߇ߢ߈ࠆ㧚࿁ォࡉ࡜ࠪ⏴⠻㊂ߩታ㛎⚿ᨐߣᬌ⸛㔚᳇㓸Ⴒߒߚ࠳ࠬ࠻ࠍ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߆ࠄᛄ⪭ߔ࿁ォࡉ࡜ࠪߩࠞ࠶࠻ࡕ࠺࡞౮⌀ߣ࿁ォࡉ࡜ࠪߣ㓸Ⴒᭂࠛ࡟ࡔࡦࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪࡈ࡟࡯ࡓဳ㓸Ⴒᭂ࠻ߩ૏⟎㑐ଥࠍ࿑ 3 ߦ␜ߔ㧚ࡉ࡜ࠪ⚛✢ߪⲷᣓ⁁ߦขઃߌߡ

ࠛ࡟ࡔࡦ࠻ߦᲧߴߡᐔṖߥߚ߼㧘᝝㓸࠳ࠬ࠻ᛄ⪭ߒ↪ߩ࿁ォ޽ࠅ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߳ߩࡉ࡜ࠪߩធ⸅ᒝᐲࠍ৻ቯߦߒߡࡉ࡜ࠪߩ៺⠻߇ૐᷫߔࠆߎߣ߇ᦼᓙߐࠇߚ㧚࿁ォࡉ࡜ࠪߩ៺㓸Ⴒᭂ࡟࡯ࡦߩំࠇࠍ㒐޿ߢ޿ࠆ㧚߹ߚ㧘ࡉ࡜ࠪ⚛✢ߩⲷᣓ⠻ߪ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ଻቞ࠍߔࠆ߁߃ߢ㊀ⷐߥ㗄ߩะ߈ࠍਛᄩߢ෻ォߒߡ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߇ ᣇߦ᛼ߐࠇࠆߎߣࠍ㒐޿ߢ޿ࠆ㧚

187 (33)ࠗ࡯࡞㧘࿁ォࡉ࡜ࠪ╬߆ࠄ⩄㔚ⵝ⟎ߩធ࿾஥ߦᵹࠇࠆ㧚ߎߩߚ߼㧘࠴ࠚ࡯ࡦߪ࠳ࠬ࠻ߣ᡼㔚㔚ᵹߩᓇ㗀ߢ៺⠻ߒߡ㐳ߐ߇િ߮ࠆߎߣ߇⠨߃ࠄࠇ㧘଻቞ὐᬌ߿੤឵߇ᔅⷐߣߥࠆ㧚ߎߩߚ߼ታ㛎ⵝ⟎ࠍ↪޿ߡ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ࠍ᷹ቯߒߚ㧚࿑ 5 ߦ࠴ࠚ࡯ࡦߩ៺⠻િ߮ታ㛎ⵝ⟎ࠍ␜ߔ㧚ታ㛎ߢߪ࠴ࠚ࿑3 ࿁ォࡉ࡜ࠪߩࠞ࠶࠻ࡕ࠺࡞ߣ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ㈩⟎Fig. 3 Photograph and schematic diagram of the rotating brush andthe collecting plate.

࡯ࡦߩ⩄㊀㧘࠴ࠚ࡯ࡦߩ㔚ᵹ㧘៺⠻િ߮㊂ࠍ᷹ቯߒߚ㧚ታ㛎ⵝ⟎ߪࠛࠕࠪ࡝ࡦ࠳ߢታᯏห᭽ߩ⩄㊀ࠍട߃ࠄࠇࠆࠃ߁ߦ
ߒߚ㧚ࠛࠕࠪ࡝ࡦ࠳߳ߩଏ⛎࿶ജߪ࿶ജ⺞ᢛᑯߢ৻ቯߣߒߡ

࿑ 4 ߦ࿁ォࡉ࡜ࠪߩ⍹὇ά߈ࡏࠗ࡜↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒ࠴ࠚ࡯ࡦߩિ߮߇⊒↢ߒߡ߽ടࠊࠆ⩄㊀ߪ৻ቯߣߥࠆࠃ߁

ⵝ⟎ߦ߅ߌࠆ៺⠻㊂ߩ᷹ቯ⚿ᨐࠍ␜ߔ㧚࿑ 2(a)ߩࡈ࡟࡯ࡓဳ

ߦߒߚ㧚࠴ࠚ࡯ࡦࠍᵹࠇࠆ᡼㔚㔚ᵹߦ⋧ᒰߔࠆ 5 㨪10 mA ߩ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍ૶↪ߒߚ႐ว㧘1 ᐕ⋡ߩ࿁ォࡉ࡜ࠪ៺⠻㔚ᵹߪ࠴ࠚ࡯ࡦߩਛᄩㇱ߆ࠄࡉ࡜ࠪߢଏ⛎ߒ㧘ࡎࠗ࡯࡞ࠍ⚻㊂ߪ 5㨪6 mm ߢ޽ߞߚ㧚࿁ォࡉ࡜ࠪߩ⸳⸘਄ߩ៺⠻㒢⇇ߪ↱ߒߡធ࿾߳⥋ࠆ㧚࠴ࠚ࡯ࡦߩિ߮ߪ࠳ࠗࡗ࡞ࠥ࡯ࠫߢㅪ⛯25 mm ߢ޽ࠅ㧘8 ᐕ⒟ᐲߢࡉ࡜ࠪࠍ੤឵ߔࠆᔅⷐ߇޽ࠆ㧚᷹ቯߒߚ㧚ਅㇱߩࠬࡊࡠࠤ࠶࠻ࡎࠗ࡯࡞ߪ࠳ࠬ࠻ଏ⛎ࡏ࠶ࠢ࿑ 2(b)ߩࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߪ࿁ォࡉ࡜ࠬߩਛߦ⸳⟎ߔࠆߎߣߢ㧘࠴ࠚ࡯ࡦ߇࠳ࠬ࠻ߢᳪ៊ߐࠇߥ߇࠶ࠪ߇ᨒ᧚ࠍㅢㆊߔࠆ㓙ߩࡉ࡜ࠪ⚛✢ߩḧᦛ߇ࡈ࡟࡯ࡓဳ

ࠄ⒖േߒߡ࠳ࠬ࠻ࠍིߺㄟ߻ࠃ߁ߦߒߚ㧚࠴ࠚ࡯ࡦߩᒻ⁁ࠍ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠃࠅ߽ዋߥߊ㧘ࡉ࡜ࠪ⚛✢ߩ៺⠻߿᛬៊߇

Dial gaugeᷫዋߔࠆ㧚ࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍ૶↪ߒߚ႐Regulatorว㧘6 ᐕ㑆ߩㆇォታ❣ߢࡉ࡜ࠪ៺⠻㊂ߪ 10 mm ⒟ᐲߢ޽ࠅ㧘ࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ႐วߦᲧߴߡ࿁ォࡉ࡜ࠪߩ

RecorderAir cylinder
Air compressor៺⠻㊂ߪඨᷫߒߚ㧚㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍࡈ࡜࠶࠻ࡄࡀ࡞ဳߦߒߡࡉ࡜ࠪ⚛✢ߩḧᦛࠍૐᷫߒߚലᨐߪ᣿ࠄ߆ߢ㧘࿁ォࡉ࡜ࠪߩ੤឵ኼ๮ߪࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߣ⚵วߖߚ႐

BrushSprocket wheel
DC power supplyChainวߩ㧞୚ߩ 15 ᐕએ਄߇ᦼᓙߢ߈ࠆ㧚㨪Dust box

30
Exchange limit ofrotating brush
Brush with flame type dust
collection plate element20࿑ 5 ࠴ࠚ࡯ࡦߩ៺⠻િ߮ታ㛎ⵝ⟎
Fig. 5 Test apparatus used for elongation
measurement for chain abrasion.

1510Link

0024
Operating time (year)

6101.6

Brush with flat panel type dust
collection plate element

540Abrasion of brush (mm)25Cotter pinOuter
link platePinInnerlink plateRoller8࿑ 4 ࿁ォࡉ࡜ࠪߩ៺⠻Fig. 4 Typical abrasion characteristic of the rotating brush.
3.

㓸Ⴒᭂࠛ࡟ࡔࡦ࠻㚟േ↪࠴ࠚ࡯ࡦߩ៺⠻િ߮

3.1 ࠴ࠚ࡯ࡦ៺⠻ታ㛎ⵝ⟎Bush㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ࠍㅪ⚿ߒߡ㚟േߔࠆߩߦ࠴ࠚ࡯ࡦࠍ૶↪ߒߡ޿ࠆ㧚⒖േ㔚ᭂᣇᑼߩ႐ว㧘࠴ࠚ࡯ࡦߪᓸ⚦ߢ⎬ᐲ߇㜞޿࠳ࠬ࠻ࠍ฽߻ࠟࠬਛߣ޿߁ㆊ㉃ߥ᧦ઙਅߢ૶↪ߔࠆߎߣߦߥࠆ㧚߹ߚ㓸Ⴒၞߢ᡼㔚ᭂ߆ࠄߩ᡼㔚㔚ᵹߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߦᵹ౉ߒ㧘࠴ࠚ࡯ࡦࠍ⚻↱ߒߡ㚟േࡎࠗ࡯࡞㧘ਅㇱࡎSide view(a) Link chain.

Front view.

(b) Roller chain.

࿑ 6 ࠴ࠚ࡯ࡦߩᒻ⁁Fig. 6 Schematics of chain geometry.

188 (34)30

4࿑ 6 ߦ␜ߔ㧚ᒰೋߪ᭴ㅧ߇න⚐ߢ࠳ࠬ࠻ིߺㄟߺߦࠃࠆ᡿㓚

2006

1.5

Vickers hardness ofchain surface㧦Hv736
Number of chain
bending and stretching㧦
7407 times
Tested dust: (E)Current: 0mA⠻ߦࠃࠆિ߮߇ዋߥ޿࿑ 6(b)ߩࡠ࡯࡜࠴ࠚ࡯ࡦࠍ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ㚟േߦ૶↪ߒߡ޿ࠆ 8㧕㧚
3.2 ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ᠁േ៺⠻࡝ࡦࠢ࠴ࠚ࡯ࡦߪਣ㍑ห჻߇ὐធ⸅ߒߡ⩄㊀ࠍฃߌ㧘᠁േߒߡዮᦛߔࠆߚ߼㧘៺⠻ߦࠃࠆિ߮ߪᔅὼ⊛ߦ⊒↢ߔࠆ㧚⒖േ㔚ᭂᣇᑼߢ࠴ࠚ࡯ࡦߪ਄ਅㇱࡎࠗ࡯࡞ߢዮᦛㆇേߔࠆߩߢ࡝ࡦࠢ㑆ߦིߺㄟࠎߛ☸ሶ߇៺⠻ߦᄢ߈ߊነਈߔࠆߣ⠨߃ࠄࠇߚ㧚ߘߎߢ㧘☸ᓘ߿⎬ᐲߩ⇣ߥࠆ 5 ⒳㘃ߩࡈ࡜ࠗࠕ࠶

Elongation of chain㧔mm/m㧕

ⷐ࿃ߩዋߥ޿࿑ 6(a)ߩ࡝ࡦࠢ࠴ࠚ࡯ࡦࠍㆬቯߒߚ㧚ᦨㄭߪ៺

1.00.5ࠪࡘࠍ↪޿ߡ࠴ࠚ࡯ࡦߩ៺⠻ߦࠃࠆિ߮㊂ࠍ᷹ቯߒߚ㧚0

࿑ 7 ߪታ㛎ⵝ⟎ߢ᷹ቯߒߚ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻ߦࠃࠆિ

0

105

15

20

25

Load of chain㧔103N㧕

߮㊂ࠍ␜ߒߡ޿ࠆ㧚❑ゲߩ៺⠻િ߮㊂ߪ࠴ࠚ࡯ࡦ㐳ߐ 1 m ޽ߚࠅߩ៺⠻િ߮㊂ߢ␜ߒߚ㧚ᮮゲߪ࠴ࠚ࡯ࡦߩࡎࠗ࡯࡞ߢߩ
ዮᦛ࿁ᢙߢ㧘7,407 ࿁߇ 1 ᐕ㑆ߩዮᦛ࿁ᢙߦ⋧ᒰߔࠆ㧚࿑ 7

࿑ 8 ࡝ࡦࠢ࠴ࠚ࡯ࡦ⩄㊀ߣ៺⠻િ߮㊂
Fig. 8 Chain load vs. elongation of link chain.

ߢ㧘࠳ࠬ࠻ߩ☸ᓘ߇߶߷╬ߒ޿(A),(C),(E)ࠍᲧߴࠆߣ࠳ࠬ࠻

15 m ߩ႐ว㧘࠴ࠚ࡯ࡦߦടࠊࠆᦨᄢ⩄㊀ߪ਄ㇱࠬࡊࡠࠤ࠶

ߩ⎬ᐲ߇㜞޿߶ߤ៺⠻િ߮㊂߇ᄢ߈ߊ㧘⎬ᐲߩ߶߷╬ߒ޿(C)࠻ࡎࠗ࡯࡞ߩㇱಽߢ⚂ 10kN ߣߥߞߡ޿ࠆ㧚ߎߩߚ߼㧘࠴ࠚ

ߣ(D)ࠍᲧߴࠆߣ☸ᓘ߇ᄢ߈޿߶ߤ៺⠻િ߮㊂߇ᄙ޿௑ะ߇࡯ࡦߩ៺⠻િ߮ߪ਄ㇱࠬࡊࡠࠤ࠶࠻ࡎࠗ࡯࡞ㇱಽߢߩዮᦛ⷗ࠄࠇࠆ㧚࡝ࡦࠢ࠴ࠚ࡯ࡦ⴫㕙ߩࡆ࠶ࠞ࡯ࠬ⎬ᐲ9㧕

ߪ Hv736ߣࡈ࡜ࠗࠕ࠶ࠪࡘߩ⎬ᐲߣห╬߆߿߿ૐ޿ߩߢ㧘ࡈ࡜ࠗࠕ࠶ࠪࡘࠍ࡝ࡦࠢ㑆ߦ᜽ߺㄟࠎߛዮᦛㆇേߦࠃߞߡ㧘࡝ࡦࠢ࠴ࠚߦࠃࠆ៺⠻߇ਥߦߥࠆߣ⠨߃ࠄࠇࠆ㧚
3.3 㔚ᵹߩᓇ㗀ߦࠃࠆ࡝ࡦࠢ࠴ࠚ࡯ࡦߩિ߮
⒖േ㔚ᭂᣇᑼߢߪ᡼㔚㔚ᵹ߇࠴ࠚ࡯ࡦࠍ⚻↱ߒߡធ࿾஥࡯ࡦߩ៺⠻િ߮㊂߇Ⴧᄢߒߚߣ⠨߃ࠄࠇࠆ㧚ߦᵹࠇࠆ㧚ߎߩ㔚ᵹ߇࠴ࠚ࡯ࡦߩ៺⠻િ߮ߦਈ߃ࠆᓇ㗀ߦߟ ࿑ 8 ߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߦടࠊࠆ⩄㊀ߣ࠴ࠚ࡯ࡦߩ៺⠻િ޿ߡታ㛎ߒߚ㧚࿑ 9 ߪ࠴ࠚ࡯ࡦߦ㔚ᵹࠍᵹߒߚ႐วߩ࠴ࠚ࡯

߮㊂ߩ㑐ଥࠍ␜ߒߡ޿ࠆ㧚࠴ࠚ࡯ࡦ⩄㊀ 15 kN ߹ߢ㧘࡝ࡦࠢࡦߩ៺⠻િ߮㊂᷹ቯ⚿ᨐߢ޽ࠆ㧚࠴ࠚ࡯ࡦߦ㔚ᵹࠍᵹߔߎߣ

࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪ࠴ࠚ࡯ࡦ⩄㊀ߦ߶߷Ყ଀ߒߡ޿ࠆ㧚ߢ៺⠻ߦࠃࠆિ߮㊂ߪჇടߒߡ޿ࠆ㧚㔚ᵹ୯߇ 10 mA ߩ႐࠴ࠚ࡯ࡦ⩄㊀߇ 15 kN ࠍ⿥߃ࠆߣ㧘៺⠻િ߮㊂ߪᕆỗߦჇടว㧘㔚ᵹࠍᵹߒߡ޿ߥ޿႐วߣᲧセߔࠆߣ㧘࠴ࠚ࡯ࡦߩ៺⠻10㧕

િ߮㊂ߪ⚂ 2.2 ୚ߦჇടߒߚ㧚࿑ 10 ߪᮮゲࠍ࠳ࠬ࠻ߩ☸ᓘߣߦᄌൻߒߚߚ߼ߣᕁࠊࠇࠆ㧚⒖േ㔚ᭂᣇᑼߢ㓸Ⴒၞߩ㜞ߐ߇ߒߡ៺⠻િ߮㊂ࠍ␜ߒߚ߽ߩߢ㧘㔚ᵹࠍᵹߒߚ⁁ᘒߢߩ៺⠻ߒߡ޿ࠆ㧚ߎࠇߪ៺⠻ࡔࠞ࠾࠭ࡓ߇᠁േ៺⠻߆ࠄಝ⌕៺⠻Characteristic of tested dust
Sample
dust

1.2
㧔A㧕

1.00.8㧔B㧕

0.6

㧔C㧕㧔D㧕

0.4
0.2
0(A)(B)
(C)
(D)
(E)

Particlesize(Ǵm)
15.8
20.1
14.2
7.6
15.0

㧔E㧕

Vickers hardness of chain
㧦Hv736
Load of chain㧦2.88kN
Current: 0mA

િ߮㊂ߪ☸ᓘߩᓇ㗀߇ᄢ߈ߊߥߞߡ޿ࠆ㧚

Vickers

Test time (h)hardness

㧔Hv㧕
839
827
770
760
739

0.8

Elongation of Chain (mm/m)

Elongation of chain㧔mm/m㧕

1.4

05

10152025104060

80

100 120

Tested dust: (E)
Load of chain: 2.88kN
0.610mA

5mA

0.40mA
0.2

0003

2048

121620103

Number of bending and stretching (-)

Number of bending and stretching (-)࿑ 7 ࠳ࠬ࠻ᕈ⁁ߣ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂Fig. 7 Elongation of link chain and characteristics oftested dust vs. number of bending stretching.

࿑  ࡝ࡦࠢ࠴ࠚ࡯ࡦ៺⠻િ߮㊂ߣ㔚ᵹߩᓇ㗀
Fig. 9 Influence of current on link chain elongation.

1.0(B)(A)

0.8(C)
0.6(E)
0.4(D)
Current: 10mA
Load of chain: 2.88 kN

0.2
004

8

1216Chain: Link chain
Vickers hardness of chain: Hv736
Tested dust: (E)120

Contact resistivity㧔kȍ㧕Elongation of chain (mm/m)

189 (35)

20

100
80
60
40

Particle diameter (Ǵm)
20

࿑ 10 ࡝ࡦࠢ࠴ࠚ࡯ࡦ៺⠻િ߮㊂ߣ☸ᓘߩᓇ㗀Fig. 10 Influence of particle diameter on link chain elongation.

00

2.0

4.0

6.0

8.0

10.0

12.0

3

㔚ᵹߦࠃߞߡ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂߇Ⴧടߒߚℂ↱ࠍᬌ

Load of chain㧔10 N㧕⸛ߔࠆߚ߼ߦ㧘࠴ࠚ࡯ࡦ᠁േ㕙ߩ㔚ሶ㗼ᓸ㏜ߦࠃࠆⷰኤࠍⴕ

࿑ 12 ࠴ࠚ࡯ࡦ⩄㊀ߣធ⸅ᛶ᛫
Fig.12 Chain load vs. contact resistivity of the link chain.

ߞߚ㧚࿑ 11(a)ߪ㔚ᵹࠍᵹߒߡ޿ߥ޿ߣ߈ߩ࠴ࠚ࡯ࡦ៺⠻㕙ߢ޽ࠆ㧚ᚲ‫☸࠻ࠬ࠳ߦޘ‬ሶ߇㊄ዻ㕙ߦ࿶౉ߐࠇߚ∥〔߇⷗ࠄࠇ᛫୯߇਄᣹ߒߚ㧚ߎߩིߺㄟࠎߛ࠳ࠬ࠻߇⛘✼ጀࠍᒻᚑߒߡ

ࠆ߇㧘㊄ዻห჻߇᠁ࠅวࠊߐߞߚߣ߈ߦߢ߈ࠆ᠁േ៺⠻߇߶࡝ࡦࠢ࠴ࠚ࡯ࡦ㑆ߩ᡼㔚ࠍ⊒↢ߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚5 kNߣࠎߤࠍභ߼ߡ޿ߚ㧚࿑ 11(b)ߪ㔚ᵹࠍᵹߒߚ႐วߩ៺⠻㕙ߢߩ࠴ࠚ࡯ࡦ⩄㊀ߪ㓸Ⴒᭂ࡟࡯ࡦߩਅㇱࡎࠗ࡯࡞߆ࠄ 7 m ⒟޽ࠆ㧚⩄㔚⁁ᘒߢߪỗߒ޿ಳಲ߇㊄ዻ㕙ߦ⷗ࠄࠇߚ㧚ዊߐߥᐲߩ▸࿐ߩ⩄㊀ߦ⋧ᒰߒߡ޿ࠆ㧚࠴ࠚ࡯ࡦ⩄㊀߇ 5kN એ਄ߦࠢ࡟࡯࠲࡯⁁ߩ┄ߺ߇㊀ߥࠅวߞߡ޿ࠆࠃ߁ߥ៺⠻㕙ࠍ␜ߥࠆߣིߺㄟࠎߛ࠳ࠬ࠻߇⩄㊀ߢ☳⎈ߐࠇߡ᛼ߒ಴ߐࠇࠆ

ߒߡ޿ࠆ㧚ߐࠄߦ᜛ᄢߒߡ⹦⚦ߦⷰኤߒߚ⚿ᨐ㧘࿑ 11(c)ߦ␜

ߚ߼ߦᛶ᛫୯߇ૐਅߔࠆߣᕁࠊࠇࠆ㧚ߔࠃ߁ߦ៺⠻㕙ߦ 1.5Ǵm ⒟ᐲߩ⃿⁁‛⾰߇ⷰኤߐࠇߚ㧚ࠛએ਄ߩታ㛎⚿ᨐ߆ࠄ㧘࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮ߪ࠳ࠬ࠻

ࡀ࡞ࠡ࡯ಽᢔဳ X ✢ಽᨆⵝ⟎ߦࠃࠆ᷹ቯ߆ࠄ㧘㋕ࠍਥᚑಽߣ߇੺࿷ߒߚਣ㍑ห჻ߩ៺ᡂߦࠃࠆ៺⠻ߦട߃ߡ㧘㔚ᵹ߇ᓇ㗀ߔࠆ☸ሶߢ޽ࠆߎߣ߇ࠊ߆ߞߚ㧚ߎࠇߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ⴫ߒߚ᡼㔚ടᎿߦࠃࠆ៺⠻߇ⶄวߒߡ޿ࠆߎߣ߇᣿ࠄ߆ߦߥ㕙㊄ዻ߇㔚᳇⊛ߦṁⲢߒߡ㧘߰ߚߚ߮ಝ࿕ߒߡߢ߈ߚ߽ߩߣߞߚ㧚㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߦᵹࠇࠆ᡼㔚㔚ᵹߪ⩄㔚ⵝ⟎ߣ࠴ࠚ⠨߃ࠄࠇߚ㧚࡝ࡦࠢ࠴ࠚ࡯ࡦߩធ⸅ὐߢߩ᡼㔚ࠍ⠨߃ࠆߣ㧘࡯ࡦࠍ฽߼ߚ㐽࿁〝ࠍ⏕଻ߔࠆᔅⷐ߇޽ࠆ㧚ߥ߅᭴ㅧ਄㧘⒖࡝ࡦࠢ࠴ࠚ࡯ࡦߩធ⸅ὐ㑆ߦ㜞ᛶ᛫࠳ࠬ࠻ࠍིߺㄟࠎߛ႐േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߆ࠄߩ㔚ᵹᵹ಴ว㧘࡝ࡦࠢ㑆ߦ⛘✼ጀࠍᒻᚑߔࠆߎߣߦߥࠆ㧚ߎߩ⁜޿⛘✼⚻〝߇ⶄ㔀ߢ޽ࠅ㧘ታᯏߦ߅ߌࠆ࠴ࠚ࡯ࡦߩ៺⠻િ߮ߩ⏕⹺ጀࠍㅢߓߡ᡼㔚߇⊒↢ߔࠇ߫㧘᡼㔚ടᎿ 11㨪12㧕ߣห᭽ߦ࠴ࠚ

߇ᔅⷐߣ⠨߃ࠄࠇߚ㧚

࡯ࡦߩ㊄ዻ߇៊⠻ߔࠆߎߣ߇⠨߃ࠄࠇࠆ㧚

3.4 ࡠ࡯࡜࠴ࠚ࡯ࡦ

࿑ 12 ߪ࠴ࠚ࡯ࡦ⩄㊀ࠍᄌൻߐߖߚߣ߈ߩ⛎㔚ࡉ࡜ࠪߣធ

⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ࠍ↪޿ࠆࡊ࡜ࡦ࠻ో૕ߩኼ๮㧘㔚࿾㑆ߩធ⸅ᛶ᛫ࠍ␜ߒߡ޿ࠆ㧚࠴ࠚ࡯ࡦ⩄㊀߇ 5 kN એ਄ߢ᳇㓸Ⴒⵝ⟎ߩኼ๮ߥߤࠍ✚ว⊛ߦൊ᩺ߔࠆߣ㧘⒖േ㔚ᭂဳ㔚ߪᢙ⊖ǡ⒟ᐲߩᛶ᛫୯ߢ޽ߞߚ߇㧘࠴ࠚ࡯ࡦ⩄㊀ࠍߘࠇએਅ᳇㓸Ⴒⵝ⟎ߩା㗬ᕈะ਄ߩߚ߼ߦߪ㧘࡝ࡦࠢ࠴ࠚ࡯ࡦࠃࠅ߽ߦߔࠆߣ࠴ࠚ࡯ࡦߩ࡝ࡦࠢ㑆ߦ࠳ࠬ࠻ࠍིߺㄟߺ㧘ᕆỗߦᛶᦝߦ⠴ਭᕈߩᄢ߈޿࠴ࠚ࡯ࡦߩ㐿⊒߇ⷐᦸߐࠇߚ㧚ࡠ࡯࡜࠴ࠚ࡯ࡦߪࡠ࡯࡜ߣࡇࡦ߇✢ធ⸅ߒߡࡠ࡯࡜࠴ࠚ࡯ࡦߦടࠊ
ߞߚ⩄㊀ࠍฃߌࠆߩߢធ⸅ㇱߩ㕙࿶߇࡝ࡦࠢ࠴ࠚ࡯ࡦࠃࠅዊߐߊ㧘࠳ࠬ࠻ߦኻߔࠆ⠴៺⠻ᕈࠍ⠨߃ࠆߣ᦭೑ߦߥࠆ㧚߹ߚធ⸅ߔࠆ㊄ዻߩ㕙Ⓧ߇ᄢ߈޿ߩߢ㔚ᵹߦࠃߞߡ⊒↢ߔࠆ៊⠻߇ዊߐߊߥࠅ㧘࠴ࠚ࡯ࡦߩኼ๮ࠍ㐳ߊߢ߈ࠆߣ⠨߃ߚ㧚ࡠ࡯࡜࠴ࠚ࡯ࡦߩ៺⠻િ߮ታ㛎ߩ⚿ᨐࠍ࿑ 13 ߦ␜ߔ㧚1 ᐕ㑆100Ǵm(a) Abrasion point byload and dust

100Ǵm10Ǵmߩ࠴ࠚ࡯ࡦߩዮᦛ࿁ᢙࠍ7,407 ࿁ߣߔࠆߣዮᦛ࿁ᢙߢߪ10 ᐕ(b) Abrasion point by (c) Enlarged view ofelectrical discharge
electrical dischargemachiningmachining point⋧ᒰߩ៺⠻⹜㛎ߣߥࠆ㧚ࡠ࡯࡜࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߩ 1/30 ⒟ᐲߦૐᷫߒߚ㧚࿑ 11 ࡝ࡦࠢ࠴ࠚ࡯ࡦ៺⠻㕙ߩ㔚ሶ㗼ᓸ㏜౮⌀Fig.11 SEM image of abrasion point for the link chain.
5

190 (36)3042006

Time (h)
100

300

200

400

500

600

20
Design limit of chain elongation.

Elongation of chain (mm/m)

Elongation of chain (mm/m)

Link chain




Load of chain㧦2.88kN
Current㧦10mA
Tested dust: (E)


Roller chain

15

Link chain(Industrial coal fired boiler)
Link chain(Utility boiler)

105Roller chain(Industrial coal fired boiler)
0



00
100

20

30

405060࿑ 14 ߪ↥ᬺ↪ߣ੐ᬺ↪ߩ⍹὇ά߈ࡏࠗ࡜ߢ⛮⛯⊛ߦ᷹ቯ68

࿑ 14 ࠴ࠚ࡯ࡦߩ૶↪ᤨ㑆ߣ៺⠻િ߮㊂
Fig.14 Operating time vs. chain elongation.

Number of bending and stretching.

 ࠴ࠚ࡯ࡦߩિ߮㊂ߩታᯏ᷹ቯ⚿ᨐ

4Operating time (year)

70103

࿑ 13 ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂Ყセ
Fig.13 Comparison of chain elongation.

2࡟ࡔࡦ࠻ߩ⚵วߖߦᲧߴߡ㧘ᦝߦಳಲߩዋߥ޿ࡈ࡜࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߣ࿁ォࡉ࡜ࠪߩ⚵วߖߪ࿁ォࡉ࡜ࠪߩ៺⠻㊂ࠍඨᷫߔࠆߎߣ߇ߢ߈ߚ㧚ߒߚ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߩ᷹ቯ⚿ᨐߢ޽ࠆ㧚ߎߩㆇδ㧕㓸Ⴒᭂࠛ࡟ࡔࡦ࠻㚟േ↪࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪォታ❣ߢ㧘↥ᬺ↪⍹὇ά߈ࡏࠗ࡜↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎਄ㇱࠬࡊࡠࠤ࠶࠻ࡎࠗ࡯࡞ㇱಽߢߩዮᦛߦࠃߞߡ⊒↢ߒ,࠳ߦ߅ߌࠆ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪ 8 ᐕ⒟ᐲߢ࡝ࡦࠢ࠴

ࠬ࠻ߩ⎬ᐲ߇㜞ߊ☸ᓘ߇ᄢ߈޿߶ߤ߇ᄢ߈ߊߥࠆ㧚߹ߚ࡝ࡦࠚ࡯ࡦߩ⸳⸘਄ߩ៺⠻િ߮㒢⇇㊂ㄭߊߦߥࠅ㧘੤឵ߒߡ޿ࠆ㧚ࠢ࠴ࠚ࡯ࡦߩ⏴⠻િ߮㊂ߪ᠁േ៺⠻ߩ▸࿐ߢ࠴ࠚ࡯ࡦߦട੐ᬺ↪⍹὇ά߈ࡏࠗ࡜ߩታ❣ߢߪ៺⠻િ߮㊂߇ 8.1 mm ߣ↥ࠊࠆ⩄㊀ߦᲧ଀ߒߡ޿ࠆ㧚ᬺ↪ߦ߅ߌࠆታ᷹୯ߩඨಽߢ޽ߞߚ㧚ߎࠇߪࡏࠗ࡜ߩΆᢱߢ

ε㧕᡼㔚㔚ᵹߪ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߆ࠄ࠴ࠚ࡯ࡦࠍ⚻↱ߒߡᵹ޽ࠆ⍹὇ߩ⒳㘃ߩ㆑޿߿⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩㆇォ᧦಴ߔࠆߚ߼㧘࡝ࡦࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪ᡼㔚㔚ᵹߦࠃߞઙߩ㆑޿㧘᡼㔚㔚ᵹߩ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻߆ࠄߩᵹ಴⚻〝ߩᡷߡ⚂ 2.2 ୚ߦჇടߒߚ㧚߹ߚ࠳ࠬ࠻ߩ☸ᓘ߇ᄢ߈޿߶ߤ⏴⠻ༀߥߤ߇ⶄว⊛ߦᓇ㗀ߒߡ޿ࠆߚ߼ߣᕁࠊࠇࠆ㧚િ߮㊂߇ᄢ߈ߊߥࠆ௑ะ߇⷗ࠄࠇߚ㧚ࡠ࡯࡜࠴ࠚ࡯ࡦࠍ೨ㅀߩ↥ᬺ↪⍹὇ά߈ࡏࠗ࡜↪⒖േ㔚ζ㧕ࡠ࡯࡜࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ 1/30 ⒟ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߦㆡ↪ߒߚ⚿ᨐࠍ࿑ 14 ߦวࠊߖߡ⸥タߒᐲߢ޽ࠅ㧘ታᯏߢߩ᷹ቯ⚿ᨐߢ߽ࡠ࡯࡜࠴ࠚ࡯ࡦߩ៺⠻િ߮ߚ㧚1999 ᐕ߆ࠄߩࡠ࡯࡜࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂᷹ቯ୯ߪ࡝ࡦ

㊂ߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߩ 1/5 ⒟ᐲߣᄢ᏷ߦዋߥߊߥߞߚ㧚ࠢ࠴ࠚ࡯ࡦߩ៺⠻િ߮㊂ߦᲧߴߡ 1/5 ⒟ᐲߣዊߐ޿୯ߣߥߞ
ߡ޿ࠆ㧚ߎߩ⚿ᨐ߆ࠄ㧘ࡠ࡯࡜࠴ࠚ࡯ࡦߪ࡝ࡦࠢ࠴ࠚ࡯ࡦߦᲧߴߡ㐳ᦼ㑆ߩ૶↪ߦ⠴߃ࠄࠇࠆߎߣ߇ታ⸽ߐࠇߟߟ޽ࠆ㧚4.

߹ߣ߼

⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩਥⷐ᭴ᚑຠߢ޽ࠆ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩᒻ⁁ߣ࿁ォࡉ࡜ࠪߣ៺⠻ߦߟ޿ߡ⍹὇ά߈ࡏࠗ࡜
↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߢታ᷹ߔࠆߣߣ߽ߦ㧘㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߩ㚟േߦ↪޿ߡ޿ࠆ࠴ࠚ࡯ࡦߩ៺⠻ߣ᡼㔚㔚ᵹߩᓇ㗀ߦߟ޿ߡታ㛎ᬌ⸛ࠍⴕߞߚ㧚ߘߩ⚿ᨐ㧘એਅߩߎߣ߇ࠊ߆ߞߚ㧚γ㧕㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߣߒߡシ㊂ߥࡈ࡟࡯ࡓဳߣ೰ᕈ߇ᄢ߈ߊಳಲߩዋߥ޿ࡈ࡜࠶࠻ࡄࡀ࡞ဳߩ㓸Ⴒᭂࠛ࡟ࡔࡦ࠻ߢ࿁ォࡉ࡜ࠪߩ⍹὇ά߈ࡏࠗ࡜↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߦ߅ߌࠆ៺⠻ࠍ᷹ቯߒߚ⚿ᨐ㧘࿁ォࡉ࡜ࠪߣࡈ࡟࡯ࡓဳ㓸Ⴒᭂࠛෳ⠨ᢥ₂㕒㔚᳇ቇળ✬㧦㕒㔚᳇ࡂࡦ࠼ࡉ࠶ࠢR㧘ࠝ࡯ࡓ␠㧔㧕2) 㕍ᧁഞ㧘᧻ጊථ⬿㧦㕒㔚᳇ቇળ⹹㧘2㧔1978㧕2073) ਃဈବ᣿㧘ᄢᶆᔘ㧘᦭శᱞ㓶㧦㕒㔚᳇ቇળ⹹㧘30 (2006)
1284) Ⴧ↰㐹৻㧘ᢥ࿷ᓼ㧦㕒㔚᳇ቇળ⹹㧘6㧔1982㧕1865) Ⴧ↰㐹৻㧘ᢥ࿷ᓼ㧦㕒㔚᳇ቇળ⹹㧘6㧔1982㧕3276) Ⴧ↰㐹৻㧦․㐿ᤘ  7) J. Trump, H. Milde : United States Patent, No.3912467 (1975)
8) ਃဈବ᣿㧘⊕ਣାᒾ㧦ታ㐿ᐔ 03-90637㧔1991㧕
9) ᣣᧄⷙᩰදળ㧦JIS Z2244 (1992)
10) ᯅᧄᑪᰴ㧦☳☸૕ߦࠃࠆ៺⠻㧘p2,↥ᬺᛛⴚ࠮ࡦ࠲࡯( 1974㧕11) ᢧ⮮㐳↵㧦᡼㔚ടᎿߩߒߊߺߣ 100㧑ᵴ↪ᴺ㧘p42, (ᩣ)ᛛⴚ⹏⺰␠㧔1989㧕12) ᢧ⮮㐳↵,ዊᨋ๺ᒾ,઄ർ⼱⧷ᰴ㧦ࡢࠗࡗࠞ࠶࠻᡼㔚ടᎿᛛⴚ㧘p46㧘ᣣೀᎿᬺᣂ⡞␠㧔1989㧕1)