⒖േ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 Type
Electrostatic 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 of the 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, the elongation 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. ߪߓߦ 㔚᳇㓸Ⴒⵝ⟎ߪ㧘ࠟࠬਛߦᶋㆆߔࠆᓸ⚦ߥ࠳ࠬ࠻ߦኻߒߡ ⋥ធ⊛ߦ㕒㔚᳇ജࠍ߷ߒߡ㓸㒰ߔࠆߩߢ㧘⋭㔚ജߢ ജ៊ᄬ߇ዊߐ․ᓽ߇ࠅ㧘ᐢߊᎿᬺឃࠟࠬ↪㓸Ⴒⵝ⟎ߣߒ ߡ↪ߐࠇߡࠆ㧚ߒ߆ߒ㔚᳇㓸Ⴒⵝ⟎ߪឃࠟࠬࠍ㔚᳇⊛ߦ ಣℂߔࠆේℂ߆ࠄ㧘㓸Ⴒᕈ⢻߇࠳ࠬ࠻㔚᳇ᛶ᛫₸ߩᓇ㗀ࠍฃ ߌࠆ㧚․ߦ㜞ᛶ᛫࠳ࠬ࠻ߢ⊒↢ߔࠆㅒࠦࡠ࠽ߦࠃࠆ㓸Ⴒᕈ⢻ ߩૐਅࠍసߔࠆߎߣߪ㊀ⷐߥ⺖㗴ߣߥߞߡࠆ1㧕㧚㔚᳇㓸 Ⴒⵝ⟎ߢㅒࠦࡠ࠽ࠍᛥߒߡ㓸Ⴒᕈ⢻ࠍ㜞ߊߟᣇᴺߣߒ ߡ㧘㓸Ⴒᭂࠍ᭴ᚑߔࠆ㓸Ⴒ᧼ࠍ⒖േน⢻ߦߒߡ㓸࠳ࠬ࠻ጀ ࠍㅪ⛯⊛ߦቢో㒰ߒߡ㓸Ⴒ᧼ࠍᏱߦᷡᵺߦߟ⒖േ㔚ᭂ ᣇᑼ߇ࠆ2㧕㧚 ೨ႎ 3㧕ߢߪ⒖േ㔚ᭂᣇᑼߩ࠳ࠬ࠻ጀઃ⌕ജߣᛄ⪭ߒᣇᴺ㧘 㔚․ᕈߣ࠳ࠬ࠻ጀෘߐ㧘࿁ォࡉࠪߩ࠳ࠬ࠻ጀᛄ⪭ߒലᨐ ߦߟߡታ㛎ᬌ⸛ߒߚౝኈࠍႎ๔ߒߚ㧚㔚᳇㓸Ⴒⵝ⟎ߩ࠳ࠬ ࠻ઃ⌕ജߪ࠳ࠬ࠻㔚᳇ᛶ᛫₸߇㜞ߊߥࠆߣᕆỗߦჇടߒߡ㧘 㓸Ⴒ᧼ߩᯏ᪾⊛᭵ᛂߢߪᛄ⪭ߒ࿎㔍ߥߎߣࠍࠄ߆ߦߒߚ㧚 ߹ߚ㧘㜞ᛶ᛫࠳ࠬ࠻ࠍࡉࠪߢᛄ⪭ߣߒߡ㓸Ⴒ᧼㕙ࠍᏱ ߦᷡᵺߦߡ߫㧘ㅒࠦࡠ࠽ࠍ㒐ᱛߒߡ㜞ᛶ᛫࠳ࠬ࠻ߩ㓸Ⴒ߇ น⢻ߢࠅ㧘࿁ォࡉࠪߪ㓸Ⴒ᧼ߦ㕒㔚㓸ߒߚ࠳ࠬ࠻ߩᛄ ⪭ߒലᨐ߇ఝࠇߡࠆߎߣࠍ␜ߒߚ㧚 ⒖േ㔚ᭂᣇᑼߩ႐ว㧘㓸Ⴒ᧼ࠍ⍴ౠ⁁ߦಽഀߒߡ࠴ࠚࡦ ߢㅪ⚿ߒߚ㓸Ⴒᭂࠛࡔࡦ࠻ߥߤߩนേㇱຠࠍ㜞Ớᐲߩ࠳ ࠬ࠻ਛߢㅪ⛯ߒߡㆇォߔࠆߎߣߦߥࠆ㧚ቯߒߚㆇォߣࡔࡦ ࠹࠽ࡦࠬߩኈᤃߐࠍ⠨߃ࠆߣนേㇱຠߩା㗬ᕈߩะ߇㊀ ⷐߣߥࠆ㧚ᧄ⺰ᢥߢߪ(1)⒖േ㔚ᭂᒻ㔚᳇㓸Ⴒⵝ⟎ࠍ↪ߡ᷹ ቯߒߚ㓸Ⴒᭂࠛࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉࠪߩ⠻㧘(2)ታ㛎ⵝ ⟎ߢ᷹ቯߒߚ㓸Ⴒᭂ㚟േ↪ߩࡦࠢ࠴ࠚࡦߣࡠ࠴ࠚ ࡦߩ⠻િ߮㊂ߣ㔚ᵹߩᓇ㗀߅ࠃ߮(3)ታᯏߦ߅ߌࠆ࠴ࠚ ࡦߩ⏴⠻િ߮㊂ߩ᷹ቯ⚿ᨐߦߟߡႎ๔ߔࠆ㧚 2. 㓸Ⴒᭂࠛࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉࠪߩ⠻ 2.1 ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ᭴ㅧ ⒖േ㔚ᭂᣇᑼߩ㓸Ⴒᭂࠛࡔࡦ࠻ᒻ⁁ߣ࿁ォࡉࠪߩ ⠻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 ࠠࡢ࠼㧦㔚᳇㓸Ⴒⵝ⟎㧘㜞ᛶ᛫࠳ࠬ࠻㧘⒖േ㔚ᭂᣇᑼ㧘 ା㗬ᕈ㧘㔚ടᎿ㧘࠴ࠚࡦ㧘⠻ * 㧔ᩣ㧕ᣣ┙ࡊࡦ࠻࠹ࠢ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 Japan
1
ᢙਗߦ㈩⟎ߒߚ߽ߩ↪ߒߡࠆ㧚⒖േ㔚ᭂᣇᑼࠍᎿᬺ↪ 㔚᳇㓸Ⴒⵝ⟎ߦㆡ↪ߔࠆ႐ว㧘࿕ቯ㔚ᭂᣇᑼߦᢜߔࠆല ኸᴺߩ㓸Ⴒ᧼ࠍ⒖േߒߥߌࠇ߫ߥࠄߥ㧚ታ↪ᕈߩࠆ⒖േ น⢻ߥ㓸Ⴒ᧼ᒻ⁁ߣߒߡ⭯᧼ࠍ࡞ࡊ⁁ߦߒߚࡌ࡞࠻ᣇᑼ 4-6㧕ߥߤ⒳ޘߩᣇᑼ߇⠨߃ࠄࠇߚ߇㧘㓸Ⴒ᧼ߩ㚟േ߇ᦨ߽ ቯߒߡࠆࠠࡖ࠲ࡇᣇᑼ7㧕ࠍᬌ⸛ߒߡታ↪ൻߒߚ㧚 㓸Ⴒᭂߪ㓸Ⴒ᧼ࠍ㜞ߐ 700mm ⒟ᐲߩ⍴ౠ⁁ߦಽഀߒߡ㓸 Ⴒᭂࠛࡔࡦ࠻ߣߒ㧘ᄙᢙߩ㓸Ⴒᭂࠛࡔࡦ࠻ࠍ࿕ቯ㊄ౕߢ ࠴ࠚࡦߦㅪ⚿ߒߡ㓸Ⴒᭂࡦࠍ᭴ᚑߒߡࠆ㧚ߎߩ㓸Ⴒ ᭂࡦࠍ㚟േࡎࠗ࡞ߣਅㇱࡎࠗ࡞ߩ㑆ߢ 0.5㨪1m/min ⒟ᐲߩㅦᐲߢ⒖േߔࠆ㧚㓸Ⴒᭂࡦߩ㚟േࡎࠗ࡞ߣਅㇱ ࡎࠗ࡞㑆ߦߪ㔚ᭂ߇⸳⟎ߒߡࠆ㧚ಣℂࠟࠬߪ㔚ᭂߩ ⸳⟎ߒߡࠆ㓸Ⴒၞࠍᵹࠇࠆ㧚ߎߩ㓸Ⴒၞߢ㓸Ⴒᭂࠛࡔࡦ ࠻ߦ㓸ߐࠇ࠳ࠬ࠻ߪ㧘ಣℂࠟࠬ߇ᵹࠇߥࡎ࠶ࡄㇱߦ⒖േ ߒߡ࿁ォࡉࠪߢᛄ⪭ߐࠇࠆ㧚࿁ォࡉࠪߪ㓸Ⴒᭂࠛࡔࡦ ࠻ߣߩធ⸅ߢࡉࠪ⚛✢ߩᦛ߇ࠅ߿᛬ࠇ߇⊒↢ߒߡࡉࠪ ᓘ߇ᷫዋߔࠆ㧚ߎߩࡉࠪߩ⠻ߦߪ㓸Ⴒᭂࠛࡔࡦ࠻ᒻ⁁ ߽㑐ଥߔࠆ㧚 2.2 㓸Ⴒᭂࠛࡔࡦ࠻ߩᒻ⁁ ࿁ォࡉࠪߩ⠻ߦᓇ㗀ߔࠆ㓸Ⴒᭂࠛࡔࡦ࠻ߩᒻ⁁ߪ㧘 (1)࠳ࠬ࠻ߩၸⓍߔࠆࠃ߁ߥಳಲ߇ߥ㧘(2)ࡉࠪߣߩធ⸅߇ ో㕙ߢṖߥߎߣ㧘(3)࠳ࠬ࠻ߩᛄ⪭ߣߒ߇ኈᤃߥߎߣ߇ᦸ ߹ࠇࠆ㧚⒖േ㔚ᭂᣇᑼߢಣℂࠟࠬߩ⩄㔚ᤨ㑆ࠍ⠨ᘦߔࠆߣ㧘 㓸Ⴒᭂࠛࡔࡦ࠻ߩߪ 2.5 m એ߇ᔅⷐߣߥࠆ㧚߹ߚ㓸Ⴒ ᭂࠛࡔࡦ࠻ߪਅㇱࡎࠗ࡞ߢ᳓ᐔߣߥࠆߚ㧘ᕈ߇ⷐ ᳞ߐࠇࠆ㧚 㓸Ⴒᭂࠛࡔࡦ࠻ᒻ⁁ࠍᬌ⸛ߒߡ࿑ 2(a)ߩࡈࡓဳ㓸Ⴒ ᭂࠛࡔࡦ࠻ߣ࿑ 2(b)ߩࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ ࠍታ↪ൻߒߚ㧚ࡈࡓဳ㓸Ⴒᭂࠛࡔࡦ࠻ߪࠬ࠹ࡦࠬࡊ ࠻ߣᒝᨒ߆ࠄ᭴ᚑߐࠇ㧘ᒝᨒਛᄩㇱߩขઃߌ㊄ౕߢ ਔߩ࠴ࠚࡦߦㅪ⚿ߒߡࠆ㧚ࡈࡓဳ㓸Ⴒᭂࠛࡔࡦ ࠻ߪシ㊂ߣ߁․ᓽ߇ࠆ㧚 ࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ߪࡈࡓဳ㓸Ⴒᭂ ࠛࡔࡦ࠻ߦᲧߴߡᨒ᧚ߦࠃࠆಳಲ߇ዋߥ᭴ㅧߣߥߞߡ ࠆ㧚߹ߚࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ߪࡈࡓဳ 㓸Ⴒᭂࠛࡔࡦ࠻ࠃࠅ߽ᕈ߇ᄢ߈ߊ㧘㓸Ⴒᭂࠛࡔࡦ࠻ߩ ࠍᦨᄢߢ 4,500 mm ߹ߢᄢߢ߈ࠆ㧚㓸Ⴒᭂࠛࡔࡦ࠻ ߩᄢߦࠃߞߡ⒖േ㔚ᭂㇱߢߩࠟࠬಣℂᤨ㑆ࠍ㐳ߊߢ߈㧘 ญ࠳ࠬ࠻Ớᐲࠍૐਅߐߖࠆߎߣ߇ߢ߈ࠆ㧚 ࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ߪࡈࡓဳ㓸Ⴒᭂ ࠛࡔࡦ࠻ߦᲧߴߡᐔṖߥߚ㧘㓸࠳ࠬ࠻ᛄ⪭ߒ↪ߩ࿁ォ ࡉࠪߩ⠻߇ૐᷫߔࠆߎߣ߇ᦼᓙߐࠇߚ㧚࿁ォࡉࠪߩ ⠻ߪ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩࠍߔࠆ߁߃ߢ㊀ⷐߥ㗄 ⋡ߢࠆ㧚ߘߎߢ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩ㐳ᦼㆇォߦࠃߞ ߡࡈࡓဳ㓸Ⴒᭂࠛࡔࡦ࠻ߣࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂ ࠛࡔࡦ࠻ߘࠇߙࠇߦߟߡ࿁ォࡉࠪ⠻㊂ࠍ᷹ቯߒߚ㧚 2.3 ࿁ォࡉࠪ⏴⠻㊂ߩታ㛎⚿ᨐߣᬌ⸛ 㔚᳇㓸Ⴒߒߚ࠳ࠬ࠻ࠍ㓸Ⴒᭂࠛࡔࡦ࠻߆ࠄᛄ⪭ߔ࿁ォ ࡉࠪߩࠞ࠶࠻ࡕ࠺࡞౮⌀ߣ࿁ォࡉࠪߣ㓸Ⴒᭂࠛࡔࡦ ࠻ߩ⟎㑐ଥࠍ࿑ 3 ߦ␜ߔ㧚ࡉࠪ⚛✢ߪⲷᣓ⁁ߦขઃߌߡ ࠅ㧘㓸Ⴒᭂࠛࡔࡦ࠻߳ߩࡉࠪߩធ⸅ᒝᐲࠍ৻ቯߦߒߡ 㓸Ⴒᭂࡦߩំࠇࠍ㒐ߢࠆ㧚߹ߚ㧘ࡉࠪ⚛✢ߩⲷᣓ ߩะ߈ࠍਛᄩߢォߒߡ㓸Ⴒᭂࠛࡔࡦ࠻߇ ᣇߦߐࠇ ࠆߎߣࠍ㒐ߢࠆ㧚 ࿑1 ⒖േ㔚ᭂᣇᑼߩ⚦᭴ㅧ
Fig. 1 Schematics of the moving electrode section.
Chain Discharge electrode Lower wheel Rotating brush Collecting electrode N on-collection zone Collection zone Driving wheel Chain guide
(a) Frame type dust collection plate element.
2500䌾2,900
3700䌾4,500
(b) Flat-panel type dust collection plate element. ࿑2 㓸Ⴒᭂࠛࡔࡦ࠻ߩᒻ⁁
Fig. 2 Configuration of the collection plate element.
࿑ 4 ߦ࿁ォࡉࠪߩ⍹ά߈ࡏࠗ↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒ ⵝ⟎ߦ߅ߌࠆ⠻㊂ߩ᷹ቯ⚿ᨐࠍ␜ߔ㧚࿑ 2(a)ߩࡈࡓဳ 㓸Ⴒᭂࠛࡔࡦ࠻ࠍ↪ߒߚ႐ว㧘1 ᐕ⋡ߩ࿁ォࡉࠪ⠻ ㊂ߪ 5㨪6 mm ߢߞߚ㧚࿁ォࡉࠪߩ⸳⸘ߩ⠻㒢⇇ߪ 25 mm ߢࠅ㧘8 ᐕ⒟ᐲߢࡉࠪࠍ឵ߔࠆᔅⷐ߇ࠆ㧚 ࿑ 2(b)ߩࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ߪ࿁ォࡉ ࠶ࠪ߇ᨒ᧚ࠍㅢㆊߔࠆ㓙ߩࡉࠪ⚛✢ߩḧᦛ߇ࡈࡓဳ 㓸Ⴒᭂࠛࡔࡦ࠻ࠃࠅ߽ዋߥߊ㧘ࡉࠪ⚛✢ߩ⠻߿᛬៊߇ ᷫዋߔࠆ㧚ࡈ࠶࠻ࡄࡀ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ࠍ↪ߒߚ႐ ว㧘6 ᐕ㑆ߩㆇォታ❣ߢࡉࠪ⠻㊂ߪ 10 mm ⒟ᐲߢࠅ㧘 ࡈࡓဳ㓸Ⴒᭂࠛࡔࡦ࠻ߩ႐วߦᲧߴߡ࿁ォࡉࠪߩ ⠻㊂ߪඨᷫߒߚ㧚㓸Ⴒᭂࠛࡔࡦ࠻ࠍࡈ࠶࠻ࡄࡀ࡞ဳߦ ߒߡࡉࠪ⚛✢ߩḧᦛࠍૐᷫߒߚലᨐߪࠄ߆ߢ㧘࿁ォࡉ ࠪߩ឵ኼߪࡈࡓဳ㓸Ⴒᭂࠛࡔࡦ࠻ߣ⚵วߖߚ႐ วߩ㧞ߩ 15 ᐕએ߇ᦼᓙߢ߈ࠆ㧚 3. 㓸Ⴒᭂࠛࡔࡦ࠻㚟േ↪࠴ࠚࡦߩ⠻િ߮ 3.1 ࠴ࠚࡦ⠻ታ㛎ⵝ⟎ 㓸Ⴒᭂࠛࡔࡦ࠻ࠍㅪ⚿ߒߡ㚟േߔࠆߩߦ࠴ࠚࡦࠍ ↪ߒߡࠆ㧚⒖േ㔚ᭂᣇᑼߩ႐ว㧘࠴ࠚࡦߪᓸ⚦ߢ⎬ᐲ߇ 㜞࠳ࠬ࠻ࠍࠟࠬਛߣ߁ㆊ㉃ߥ᧦ઙਅߢ↪ߔࠆߎ ߣߦߥࠆ㧚߹ߚ㓸Ⴒၞߢ㔚ᭂ߆ࠄߩ㔚㔚ᵹߪ㓸Ⴒᭂࠛ ࡔࡦ࠻ߦᵹߒ㧘࠴ࠚࡦࠍ⚻↱ߒߡ㚟േࡎࠗ࡞㧘ਅㇱࡎ ࠗ࡞㧘࿁ォࡉࠪ╬߆ࠄ⩄㔚ⵝ⟎ߩធߦᵹࠇࠆ㧚ߎߩ ߚ㧘࠴ࠚࡦߪ࠳ࠬ࠻ߣ㔚㔚ᵹߩᓇ㗀ߢ⠻ߒߡ㐳ߐ߇ િ߮ࠆߎߣ߇⠨߃ࠄࠇ㧘ὐᬌ߿឵߇ᔅⷐߣߥࠆ㧚ߎߩ ߚታ㛎ⵝ⟎ࠍ↪ߡ࠴ࠚࡦߩ⠻િ߮㊂ࠍ᷹ቯߒߚ㧚 ࿑ 5 ߦ࠴ࠚࡦߩ⠻િ߮ታ㛎ⵝ⟎ࠍ␜ߔ㧚ታ㛎ߢߪ࠴ࠚ ࡦߩ⩄㊀㧘࠴ࠚࡦߩ㔚ᵹ㧘⠻િ߮㊂ࠍ᷹ቯߒߚ㧚ታ㛎 ⵝ⟎ߪࠛࠕࠪࡦ࠳ߢታᯏห᭽ߩ⩄㊀ࠍട߃ࠄࠇࠆࠃ߁ߦ ߒߚ㧚ࠛࠕࠪࡦ࠳߳ߩଏ⛎ജߪജ⺞ᢛᑯߢ৻ቯߣߒߡ ࠴ࠚࡦߩિ߮߇⊒↢ߒߡ߽ടࠊࠆ⩄㊀ߪ৻ቯߣߥࠆࠃ߁ ߦߒߚ㧚࠴ࠚࡦࠍᵹࠇࠆ㔚㔚ᵹߦ⋧ᒰߔࠆ 5 㨪10 mA ߩ 㔚ᵹߪ࠴ࠚࡦߩਛᄩㇱ߆ࠄࡉࠪߢଏ⛎ߒ㧘ࡎࠗ࡞ࠍ⚻ ↱ߒߡធ߳⥋ࠆ㧚࠴ࠚࡦߩિ߮ߪ࠳ࠗࡗ࡞ࠥࠫߢㅪ⛯ ᷹ቯߒߚ㧚ਅㇱߩࠬࡊࡠࠤ࠶࠻ࡎࠗ࡞ߪ࠳ࠬ࠻ଏ⛎ࡏ࠶ࠢ ࠬߩਛߦ⸳⟎ߔࠆߎߣߢ㧘࠴ࠚࡦ߇࠳ࠬ࠻ߢᳪ៊ߐࠇߥ߇ ࠄ⒖േߒߡ࠳ࠬ࠻ࠍིߺㄟࠃ߁ߦߒߚ㧚࠴ࠚࡦߩᒻ⁁ࠍ Recorder Air compressor Dial gauge Regulator Sprocket wheel Chain Dust box ࿑ 5 ࠴ࠚࡦߩ⠻િ߮ታ㛎ⵝ⟎ Fig. 5 Test apparatus used for elongation
measurement for chain abrasion. 㨪
Air cylinder
Brush DC power supply
࿑3 ࿁ォࡉࠪߩࠞ࠶࠻ࡕ࠺࡞ߣ㓸Ⴒᭂࠛࡔࡦ࠻ߩ㈩⟎ Fig. 3 Photograph and schematic diagram of the rotating brush and
the collecting plate.
2 4 5 15 6 8 10 20 25 30
Operating time (year)
Abrasion of brush (mm)
Brush with flame type dust collection plate element
Brush with flat panel type dust collection plate element
࿑ 4 ࿁ォࡉࠪߩ⠻
Fig. 4 Typical abrasion characteristic of the rotating brush.
Exchange limit of rotating brush
0 0
࿑ 6 ࠴ࠚࡦߩᒻ⁁ Fig. 6 Schematics of chain geometry.
40 Link 101.6 Outer link plate Inner link plate Bush Roller Pin
(a) Link chain. (b) Roller chain. Cotter pin
࿑ 6 ߦ␜ߔ㧚ᒰೋߪ᭴ㅧ߇න⚐ߢ࠳ࠬ࠻ིߺㄟߺߦࠃࠆ㓚 ⷐ࿃ߩዋߥ࿑ 6(a)ߩࡦࠢ࠴ࠚࡦࠍㆬቯߒߚ㧚ᦨㄭߪ ⠻ߦࠃࠆિ߮߇ዋߥ࿑ 6(b)ߩࡠ࠴ࠚࡦࠍ㓸Ⴒᭂࠛ ࡔࡦ࠻ߩ㚟േߦ↪ߒߡࠆ8㧕㧚 3.2 ࡦࠢ࠴ࠚࡦߩ᠁േ⠻ ࡦࠢ࠴ࠚࡦߪਣ㍑ห჻߇ὐធ⸅ߒߡ⩄㊀ࠍฃߌ㧘᠁േ ߒߡዮᦛߔࠆߚ㧘⠻ߦࠃࠆિ߮ߪᔅὼ⊛ߦ⊒↢ߔࠆ㧚⒖ േ㔚ᭂᣇᑼߢ࠴ࠚࡦߪਅㇱࡎࠗ࡞ߢዮᦛㆇേߔࠆߩ ߢࡦࠢ㑆ߦིߺㄟࠎߛ☸ሶ߇⠻ߦᄢ߈ߊነਈߔࠆߣ⠨ ߃ࠄࠇߚ㧚ߘߎߢ㧘☸ᓘ߿⎬ᐲߩ⇣ߥࠆ 5 ⒳㘃ߩࡈࠗࠕ࠶ ࠪࡘࠍ↪ߡ࠴ࠚࡦߩ⠻ߦࠃࠆિ߮㊂ࠍ᷹ቯߒߚ㧚 ࿑ 7 ߪታ㛎ⵝ⟎ߢ᷹ቯߒߚࡦࠢ࠴ࠚࡦߩ⠻ߦࠃࠆિ ߮㊂ࠍ␜ߒߡࠆ㧚❑ゲߩ⠻િ߮㊂ߪ࠴ࠚࡦ㐳ߐ 1 m ߚࠅߩ⠻િ߮㊂ߢ␜ߒߚ㧚ᮮゲߪ࠴ࠚࡦߩࡎࠗ࡞ߢߩ ዮᦛ࿁ᢙߢ㧘7,407 ࿁߇ 1 ᐕ㑆ߩዮᦛ࿁ᢙߦ⋧ᒰߔࠆ㧚࿑ 7 ߢ㧘࠳ࠬ࠻ߩ☸ᓘ߇߶߷╬ߒ(A),(C),(E)ࠍᲧߴࠆߣ࠳ࠬ࠻ ߩ⎬ᐲ߇㜞߶ߤ⠻િ߮㊂߇ᄢ߈ߊ㧘⎬ᐲߩ߶߷╬ߒ(C) ߣ(D)ࠍᲧߴࠆߣ☸ᓘ߇ᄢ߈߶ߤ⠻િ߮㊂߇ᄙะ߇ ࠄࠇࠆ㧚ࡦࠢ࠴ࠚࡦ㕙ߩࡆ࠶ࠞࠬ⎬ᐲ9㧕ߪ Hv736 ߣࡈࠗࠕ࠶ࠪࡘߩ⎬ᐲߣห╬߆߿߿ૐߩߢ㧘ࡈࠗࠕ࠶ ࠪࡘࠍࡦࠢ㑆ߦߺㄟࠎߛዮᦛㆇേߦࠃߞߡ㧘ࡦࠢ࠴ࠚ ࡦߩ⠻િ߮㊂߇Ⴧᄢߒߚߣ⠨߃ࠄࠇࠆ㧚 ࿑ 8 ߪࡦࠢ࠴ࠚࡦߦടࠊࠆ⩄㊀ߣ࠴ࠚࡦߩ⠻િ ߮㊂ߩ㑐ଥࠍ␜ߒߡࠆ㧚࠴ࠚࡦ⩄㊀ 15 kN ߹ߢ㧘ࡦࠢ ࠴ࠚࡦߩ⠻િ߮㊂ߪ࠴ࠚࡦ⩄㊀ߦ߶߷Ყߒߡࠆ㧚 ࠴ࠚࡦ⩄㊀߇ 15 kN ࠍ߃ࠆߣ㧘⠻િ߮㊂ߪᕆỗߦჇട ߒߡࠆ㧚ߎࠇߪ⠻ࡔࠞ࠾࠭ࡓ߇᠁േ⠻߆ࠄಝ⌕⠻10㧕 ߦᄌൻߒߚߚߣᕁࠊࠇࠆ㧚⒖േ㔚ᭂᣇᑼߢ㓸Ⴒၞߩ㜞ߐ߇ 15 m ߩ႐ว㧘࠴ࠚࡦߦടࠊࠆᦨᄢ⩄㊀ߪㇱࠬࡊࡠࠤ࠶ ࠻ࡎࠗ࡞ߩㇱಽߢ⚂ 10kN ߣߥߞߡࠆ㧚ߎߩߚ㧘࠴ࠚ ࡦߩ⠻િ߮ߪㇱࠬࡊࡠࠤ࠶࠻ࡎࠗ࡞ㇱಽߢߩዮᦛ ߦࠃࠆ⠻߇ਥߦߥࠆߣ⠨߃ࠄࠇࠆ㧚 3.3 㔚ᵹߩᓇ㗀ߦࠃࠆࡦࠢ࠴ࠚࡦߩિ߮ ⒖േ㔚ᭂᣇᑼߢߪ㔚㔚ᵹ߇࠴ࠚࡦࠍ⚻↱ߒߡធ ߦᵹࠇࠆ㧚ߎߩ㔚ᵹ߇࠴ࠚࡦߩ⠻િ߮ߦਈ߃ࠆᓇ㗀ߦߟ ߡታ㛎ߒߚ㧚࿑ 9 ߪ࠴ࠚࡦߦ㔚ᵹࠍᵹߒߚ႐วߩ࠴ࠚ ࡦߩ⠻િ߮㊂᷹ቯ⚿ᨐߢࠆ㧚࠴ࠚࡦߦ㔚ᵹࠍᵹߔߎߣ ߢ⠻ߦࠃࠆિ߮㊂ߪჇടߒߡࠆ㧚㔚ᵹ୯߇ 10 mA ߩ႐ ว㧘㔚ᵹࠍᵹߒߡߥ႐วߣᲧセߔࠆߣ㧘࠴ࠚࡦߩ⠻ િ߮㊂ߪ⚂ 2.2 ߦჇടߒߚ㧚࿑ 10 ߪᮮゲࠍ࠳ࠬ࠻ߩ☸ᓘߣ ߒߡ⠻િ߮㊂ࠍ␜ߒߚ߽ߩߢ㧘㔚ᵹࠍᵹߒߚ⁁ᘒߢߩ⠻ િ߮㊂ߪ☸ᓘߩᓇ㗀߇ᄢ߈ߊߥߞߡࠆ㧚 Sample dust Particle size (Ǵm) Vickers hardness 㧔Hv㧕 (A) 15.8 839 (B) 20.1 827 (C) 14.2 770 (D) 7.6 760 (E) 15.0 739 10 20 0.5 15 5 25 1.0 1.5 Load of chain㧔103N㧕 Elongatio n of chai n 㧔 mm/m 㧕 ࿑ 8 ࡦࠢ࠴ࠚࡦ⩄㊀ߣ⠻િ߮㊂ Fig. 8 Chain load vs. elongation of link chain.
Vickers hardness of chain surface㧦Hv736 Number of chain bending and stretching㧦
7407 times Tested dust: (E) Current: 0mA
0 0
࿑ ࡦࠢ࠴ࠚࡦ⠻િ߮㊂ߣ㔚ᵹߩᓇ㗀 Fig. 9 Influence of current on link chain elongation.
Test time (h)
Number of bending and stretching (-)
Elongatio n of Chain (mm/m) 16 8 12 20103 4 0mA Tested dust: (E)
Load of chain: 2.88kN 5mA 0.8 0.6 0.4 0.2 0 0 20 40 60 80 100 120 0 10mA ࿑ 7 ࠳ࠬ࠻ᕈ⁁ߣࡦࠢ࠴ࠚࡦߩ⠻િ߮㊂ Fig. 7 Elongation of link chain and characteristics of
tested dust vs. number of bending stretching.
Vickers hardness of chain 㧦Hv736 Load of chain㧦2.88kN Current: 0mA
Number of bending and stretching (-)
Elongatio n of chai n 㧔 mm/m 㧕
Characteristic of tested dust
㧔E㧕 㧔D㧕 㧔C㧕 㧔B㧕 㧔A㧕 0.4 0.8 1.2 1.4 0.2 0.6 1.0 10 5 15 20 25103 0 0
5 㔚ᵹߦࠃߞߡ࠴ࠚࡦߩ⠻િ߮㊂߇Ⴧടߒߚℂ↱ࠍᬌ ⸛ߔࠆߚߦ㧘࠴ࠚࡦ᠁േ㕙ߩ㔚ሶ㗼ᓸ㏜ߦࠃࠆⷰኤࠍⴕ ߞߚ㧚࿑ 11(a)ߪ㔚ᵹࠍᵹߒߡߥߣ߈ߩ࠴ࠚࡦ⠻㕙ߢ ࠆ㧚ᚲޘߦ࠳ࠬ࠻☸ሶ߇㊄ዻ㕙ߦߐࠇߚ∥〔߇ࠄࠇ ࠆ߇㧘㊄ዻห჻߇᠁ࠅวࠊߐߞߚߣ߈ߦߢ߈ࠆ᠁േ⠻߇߶ ߣࠎߤࠍභߡߚ㧚࿑ 11(b)ߪ㔚ᵹࠍᵹߒߚ႐วߩ⠻㕙ߢ ࠆ㧚⩄㔚⁁ᘒߢߪỗߒಳಲ߇㊄ዻ㕙ߦࠄࠇߚ㧚ዊߐߥ ࠢ࠲⁁ߩ┄ߺ߇㊀ߥࠅวߞߡࠆࠃ߁ߥ⠻㕙ࠍ␜ ߒߡࠆ㧚ߐࠄߦᄢߒߡ⚦ߦⷰኤߒߚ⚿ᨐ㧘࿑ 11(c)ߦ␜ ߔࠃ߁ߦ⠻㕙ߦ 1.5Ǵm ⒟ᐲߩ⁁‛⾰߇ⷰኤߐࠇߚ㧚ࠛ ࡀ࡞ࠡಽᢔဳ X ✢ಽᨆⵝ⟎ߦࠃࠆ᷹ቯ߆ࠄ㧘㋕ࠍਥᚑಽߣ ߔࠆ☸ሶߢࠆߎߣ߇ࠊ߆ߞߚ㧚ߎࠇߪࡦࠢ࠴ࠚࡦߩ 㕙㊄ዻ߇㔚᳇⊛ߦṁⲢߒߡ㧘߰ߚߚ߮ಝ࿕ߒߡߢ߈ߚ߽ߩߣ ⠨߃ࠄࠇߚ㧚ࡦࠢ࠴ࠚࡦߩធ⸅ὐߢߩ㔚ࠍ⠨߃ࠆߣ㧘 ࡦࠢ࠴ࠚࡦߩធ⸅ὐ㑆ߦ㜞ᛶ᛫࠳ࠬ࠻ࠍིߺㄟࠎߛ႐ ว㧘ࡦࠢ㑆ߦ⛘✼ጀࠍᒻᚑߔࠆߎߣߦߥࠆ㧚ߎߩ⁜⛘✼ ጀࠍㅢߓߡ㔚߇⊒↢ߔࠇ߫㧘㔚ടᎿ11㨪12㧕ߣห᭽ߦ࠴ࠚ ࡦߩ㊄ዻ߇៊⠻ߔࠆߎߣ߇⠨߃ࠄࠇࠆ㧚 ࿑ 12 ߪ࠴ࠚࡦ⩄㊀ࠍᄌൻߐߖߚߣ߈ߩ⛎㔚ࡉࠪߣធ 㑆ߩធ⸅ᛶ᛫ࠍ␜ߒߡࠆ㧚࠴ࠚࡦ⩄㊀߇ 5 kN એߢ ߪᢙ⊖ǡ⒟ᐲߩᛶ᛫୯ߢߞߚ߇㧘࠴ࠚࡦ⩄㊀ࠍߘࠇએਅ ߦߔࠆߣ࠴ࠚࡦߩࡦࠢ㑆ߦ࠳ࠬ࠻ࠍིߺㄟߺ㧘ᕆỗߦᛶ ᛫୯߇ߒߚ㧚ߎߩིߺㄟࠎߛ࠳ࠬ࠻߇⛘✼ጀࠍᒻᚑߒߡ ࡦࠢ࠴ࠚࡦ㑆ߩ㔚ࠍ⊒↢ߒߡࠆߣ⠨߃ࠄࠇࠆ㧚5 kN ߩ࠴ࠚࡦ⩄㊀ߪ㓸Ⴒᭂࡦߩਅㇱࡎࠗ࡞߆ࠄ 7 m ⒟ ᐲߩ▸࿐ߩ⩄㊀ߦ⋧ᒰߒߡࠆ㧚࠴ࠚࡦ⩄㊀߇ 5kN એߦ ߥࠆߣིߺㄟࠎߛ࠳ࠬ࠻߇⩄㊀ߢ☳⎈ߐࠇߡߒߐࠇࠆ ߚߦᛶ᛫୯߇ૐਅߔࠆߣᕁࠊࠇࠆ㧚 એߩታ㛎⚿ᨐ߆ࠄ㧘ࡦࠢ࠴ࠚࡦߩ⠻િ߮ߪ࠳ࠬ࠻ ߇ߒߚਣ㍑ห჻ߩᡂߦࠃࠆ⠻ߦട߃ߡ㧘㔚ᵹ߇ᓇ㗀 ߒߚ㔚ടᎿߦࠃࠆ⠻߇ⶄวߒߡࠆߎߣ߇ࠄ߆ߦߥ ߞߚ㧚㓸Ⴒᭂࠛࡔࡦ࠻ߦᵹࠇࠆ㔚㔚ᵹߪ⩄㔚ⵝ⟎ߣ࠴ࠚ ࡦࠍߚ㐽࿁〝ࠍ⏕ߔࠆᔅⷐ߇ࠆ㧚ߥ߅᭴ㅧ㧘⒖ േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߪ㓸Ⴒᭂࠛࡔࡦ࠻߆ࠄߩ㔚ᵹᵹ ⚻〝߇ⶄ㔀ߢࠅ㧘ታᯏߦ߅ߌࠆ࠴ࠚࡦߩ⠻િ߮ߩ⏕ ߇ᔅⷐߣ⠨߃ࠄࠇߚ㧚 3.4 ࡠ࠴ࠚࡦ ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ࠍ↪ࠆࡊࡦ࠻ోߩኼ㧘㔚 ᳇㓸Ⴒⵝ⟎ߩኼߥߤࠍ✚ว⊛ߦൊ᩺ߔࠆߣ㧘⒖േ㔚ᭂဳ㔚 ᳇㓸Ⴒⵝ⟎ߩା㗬ᕈะߩߚߦߪ㧘ࡦࠢ࠴ࠚࡦࠃࠅ߽ ᦝߦ⠴ਭᕈߩᄢ߈࠴ࠚࡦߩ㐿⊒߇ⷐᦸߐࠇߚ㧚ࡠ࠴ ࠚࡦߪࡠߣࡇࡦ߇✢ធ⸅ߒߡࡠ࠴ࠚࡦߦടࠊ ߞߚ⩄㊀ࠍฃߌࠆߩߢធ⸅ㇱߩ㕙߇ࡦࠢ࠴ࠚࡦࠃࠅ ዊߐߊ㧘࠳ࠬ࠻ߦኻߔࠆ⠴⠻ᕈࠍ⠨߃ࠆߣߦߥࠆ㧚߹ ߚធ⸅ߔࠆ㊄ዻߩ㕙Ⓧ߇ᄢ߈ߩߢ㔚ᵹߦࠃߞߡ⊒↢ߔࠆ ៊⠻߇ዊߐߊߥࠅ㧘࠴ࠚࡦߩኼࠍ㐳ߊߢ߈ࠆߣ⠨߃ߚ㧚 ࡠ࠴ࠚࡦߩ⠻િ߮ታ㛎ߩ⚿ᨐࠍ࿑ 13 ߦ␜ߔ㧚1 ᐕ㑆 ߩ࠴ࠚࡦߩዮᦛ࿁ᢙࠍ7,407 ࿁ߣߔࠆߣዮᦛ࿁ᢙߢߪ10 ᐕ ⋧ᒰߩ⠻⹜㛎ߣߥࠆ㧚ࡠ࠴ࠚࡦߩ⠻િ߮㊂ߪࡦ ࠢ࠴ࠚࡦߩ⠻િ߮㊂ߩ 1/30 ⒟ᐲߦૐᷫߒߚ㧚 (C) (B) ࿑ 10 ࡦࠢ࠴ࠚࡦ⠻િ߮㊂ߣ☸ᓘߩᓇ㗀 Fig. 10 Influence of particle diameter on link chain elongation.
Particle diameter (Ǵm) Elongatio n of chain (mm/m) 16 8 20 12 4 (E) Current: 10mA Load of chain: 2.88 kN (D) 0.8 0.6 0.4 0.2 0 0 (A) 1.0 2.0 4.0 6.0 8.0 10.0 12.0 Load of chain㧔103N㧕 20 40 120 60 80 Contact resistivity 㧔 kȍ 㧕 100
Chain: Link chain
Vickers hardness of chain: Hv736 Tested dust: (E)
࿑ 12 ࠴ࠚࡦ⩄㊀ߣធ⸅ᛶ᛫
Fig.12 Chain load vs. contact resistivity of the link chain.
0 0
100Ǵm 100Ǵm 10Ǵm
࿑ 11 ࡦࠢ࠴ࠚࡦ⠻㕙ߩ㔚ሶ㗼ᓸ㏜౮⌀ Fig.11 SEM image of abrasion point for the link chain.
(a) Abrasion point by load and dust
(b) Abrasion point by electrical discharge machining (c) Enlarged view of electrical discharge machining point
࠴ࠚࡦߩિ߮㊂ߩታᯏ᷹ቯ⚿ᨐ ࿑ 14 ߪ↥ᬺ↪ߣᬺ↪ߩ⍹ά߈ࡏࠗߢ⛮⛯⊛ߦ᷹ቯ ߒߚࡦࠢ࠴ࠚࡦߩ⠻િ߮㊂ߩ᷹ቯ⚿ᨐߢࠆ㧚ߎߩㆇ ォታ❣ߢ㧘↥ᬺ↪⍹ά߈ࡏࠗ↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ ߦ߅ߌࠆࡦࠢ࠴ࠚࡦߩ⠻િ߮㊂ߪ 8 ᐕ⒟ᐲߢࡦࠢ࠴ ࠚࡦߩ⸳⸘ߩ⠻િ߮㒢⇇㊂ㄭߊߦߥࠅ㧘឵ߒߡࠆ㧚 ᬺ↪⍹ά߈ࡏࠗߩታ❣ߢߪ⠻િ߮㊂߇ 8.1 mm ߣ↥ ᬺ↪ߦ߅ߌࠆታ᷹୯ߩඨಽߢߞߚ㧚ߎࠇߪࡏࠗߩΆᢱߢ ࠆ⍹ߩ⒳㘃ߩ㆑߿⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩㆇォ᧦ ઙߩ㆑㧘㔚㔚ᵹߩ㓸Ⴒᭂࠛࡔࡦ࠻߆ࠄߩᵹ⚻〝ߩᡷ ༀߥߤ߇ⶄว⊛ߦᓇ㗀ߒߡࠆߚߣᕁࠊࠇࠆ㧚 ࡠ࠴ࠚࡦࠍ೨ㅀߩ↥ᬺ↪⍹ά߈ࡏࠗ↪⒖േ㔚 ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߦㆡ↪ߒߚ⚿ᨐࠍ࿑ 14 ߦวࠊߖߡ⸥タߒ ߚ㧚1999 ᐕ߆ࠄߩࡠ࠴ࠚࡦߩ⠻િ߮㊂᷹ቯ୯ߪࡦ ࠢ࠴ࠚࡦߩ⠻િ߮㊂ߦᲧߴߡ 1/5 ⒟ᐲߣዊߐ୯ߣߥߞ ߡࠆ㧚ߎߩ⚿ᨐ߆ࠄ㧘ࡠ࠴ࠚࡦߪࡦࠢ࠴ࠚࡦߦ Ყߴߡ㐳ᦼ㑆ߩ↪ߦ⠴߃ࠄࠇࠆߎߣ߇ታ⸽ߐࠇߟߟࠆ㧚 4. ߹ߣ ⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߩਥⷐ᭴ᚑຠߢࠆ㓸Ⴒᭂࠛ ࡔࡦ࠻ߩᒻ⁁ߣ࿁ォࡉࠪߣ⠻ߦߟߡ⍹ά߈ࡏࠗ ↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߢታ᷹ߔࠆߣߣ߽ߦ㧘㓸Ⴒᭂࠛ ࡔࡦ࠻ߩ㚟േߦ↪ߡࠆ࠴ࠚࡦߩ⠻ߣ㔚㔚ᵹߩᓇ 㗀ߦߟߡታ㛎ᬌ⸛ࠍⴕߞߚ㧚ߘߩ⚿ᨐ㧘એਅߩߎߣ߇ࠊ߆ ߞߚ㧚 γ㧕㓸Ⴒᭂࠛࡔࡦ࠻ߣߒߡシ㊂ߥࡈࡓဳߣᕈ߇ᄢ߈ ߊಳಲߩዋߥࡈ࠶࠻ࡄࡀ࡞ဳߩ㓸Ⴒᭂࠛࡔࡦ࠻ߢ࿁ ォࡉࠪߩ⍹ά߈ࡏࠗ↪⒖േ㔚ᭂဳ㔚᳇㓸Ⴒⵝ⟎ߦ߅ ߌࠆ⠻ࠍ᷹ቯߒߚ⚿ᨐ㧘࿁ォࡉࠪߣࡈࡓဳ㓸Ⴒᭂࠛ ࡔࡦ࠻ߩ⚵วߖߦᲧߴߡ㧘ᦝߦಳಲߩዋߥࡈ࠶࠻ࡄࡀ ࡞ဳ㓸Ⴒᭂࠛࡔࡦ࠻ߣ࿁ォࡉࠪߩ⚵วߖߪ࿁ォࡉࠪ ߩ⠻㊂ࠍඨᷫߔࠆߎߣ߇ߢ߈ߚ㧚 δ㧕㓸Ⴒᭂࠛࡔࡦ࠻㚟േ↪ࡦࠢ࠴ࠚࡦߩ⠻િ߮㊂ߪ ㇱࠬࡊࡠࠤ࠶࠻ࡎࠗ࡞ㇱಽߢߩዮᦛߦࠃߞߡ⊒↢ߒ,࠳ ࠬ࠻ߩ⎬ᐲ߇㜞ߊ☸ᓘ߇ᄢ߈߶ߤ߇ᄢ߈ߊߥࠆ㧚߹ߚࡦ ࠢ࠴ࠚࡦߩ⏴⠻િ߮㊂ߪ᠁േ⠻ߩ▸࿐ߢ࠴ࠚࡦߦട ࠊࠆ⩄㊀ߦᲧߒߡࠆ㧚 ε㧕㔚㔚ᵹߪ㓸Ⴒᭂࠛࡔࡦ࠻߆ࠄ࠴ࠚࡦࠍ⚻↱ߒߡᵹ ߔࠆߚ㧘ࡦࠢ࠴ࠚࡦߩ⠻િ߮㊂ߪ㔚㔚ᵹߦࠃߞ ߡ⚂ 2.2 ߦჇടߒߚ㧚߹ߚ࠳ࠬ࠻ߩ☸ᓘ߇ᄢ߈߶ߤ⏴⠻ િ߮㊂߇ᄢ߈ߊߥࠆะ߇ࠄࠇߚ㧚 ζ㧕ࡠ࠴ࠚࡦߩ⠻િ߮㊂ߪࡦࠢ࠴ࠚࡦߩ 1/30 ⒟ ᐲߢࠅ㧘ታᯏߢߩ᷹ቯ⚿ᨐߢ߽ࡠ࠴ࠚࡦߩ⠻િ߮ ㊂ߪࡦࠢ࠴ࠚࡦߩ 1/5 ⒟ᐲߣᄢߦዋߥߊߥߞߚ㧚 ෳ⠨ᢥ₂ 1) 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207 3) ਃဈବ㧘ᄢᶆᔘ㧘శᱞ㓶㧦㕒㔚᳇ቇળ㧘30 (2006) 128 4) Ⴧ↰㐹৻㧘ᢥᓼ㧦㕒㔚᳇ቇળ㧘6㧔1982㧕186 5) Ⴧ↰㐹৻㧘ᢥᓼ㧦㕒㔚᳇ቇળ㧘6㧔1982㧕327 6) 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,↥ᬺᛛⴚࡦ࠲ ( 1974㧕 11) ᢧ⮮㐳↵㧦㔚ടᎿߩߒߊߺߣ 100㧑ᵴ↪ᴺ㧘p42, (ᩣ) ᛛⴚ⹏⺰␠㧔1989㧕 12) ᢧ⮮㐳↵,ዊᨋᒾ,ർ⼱⧷ᰴ㧦ࡢࠗࡗࠞ࠶࠻㔚ടᎿᛛ ⴚ㧘p46㧘ᣣೀᎿᬺᣂ⡞␠㧔1989㧕 Time (h)
Number of bending and stretching. ࿑ 13 ࠴ࠚࡦߩ⠻િ߮㊂Ყセ Fig.13 Comparison of chain elongation.
Link chain Elongation of chain (mm/m) 20 30 10 400 200 500 50 60 40 300 100 600 Load of chain㧦2.88kN Current㧦10mA Tested dust: (E)
Roller chain 70103 0 0 5 10 15 20 2 4 6 8
Operating time (year) ࿑ 14 ࠴ࠚࡦߩ↪ᤨ㑆ߣ⠻િ߮㊂ Fig.14 Operating time vs. chain elongation.
Elongation of chain (mm/m)
Link chain
(Industrial coal fired boiler)
Roller chain
(Industrial coal fired boiler) Design limit of chain elongation.
Link chain (Utility boiler)
0 0
