Lifate tsa 'Widowmaker' tse Hung-Up, Li-Pinched Chainsaw Bars, le maemo a Tšohanyetso a ho Recoil Pole¶
Linomoro tsa maemo a tšohanyetso li fapana ho ea ka linaha. Leqephe lena le sebelisa 911, nomoro ea United States le Canada. Linaha tse ling tse ngata li sebelisa 112, 999, kapa nomoro e ’ngoe. Fumana nomoro ea naha ea heno.
Ho rema lifate, ho hloekisoa ha sefefo, le ho rema patsi ke palo e phahameng ka ho fetisisa ea batho ba shoang ka hora ea mosebetsi leha e le ofe oa motho. Ho latela lintlha tsa likotsi tsa mosebetsi tse tsoang ho United States Occupational Safety and Health Administration (OSHA Logging Standard). 29 CFR 1910.266), National Institute for Occupational Safety and Health (NIOSH), US Forest Service (USFS), le UK Health and Safety Executive (HSE / Arboricultural Association), bongata bo boholo ba likotsi tse bolaeang tsa meru har'a beng ba matlo, lihoai le balebeli ba fatše ha li tsoe ka tšohanyetso le meno a tsamaeang a le mong. Ho e-na le hoo, liperesente tse fetang 70 tsa lipolao li bakoa ke matla a bolokoang a ka hlahisoang ka matla ** (1) Lifate tse Hung-Up ("Bahlolohali")**, moo sefate se remiloeng ka mokhoa o itseng se koekoetla makaleng a sefate se emeng se haufi, 'me se sekame ka lehlakoreng la 45-degree le nka 2,000 ho isa ho 400 lik'hilograma. 17 600+ liponto) tsa matla a silakanyang ka holimo; (2) Ho kobeha "Spring Poles", moo kutu e oeleng e thakhisang sehlahla se tenyetsehang sa 5-to-15-centimeter (2-to-6-inch) kapa leoto ka har'a seqha se thata se tletseng likete tsa Newtons tsa tsitsipano e khutlelang morao ho 80 ho isa ho 120 kilometers ho isa ho 50 km / h * 50 km/h mohlahare, lehata, kapa molala hang hang ha lehare la chainsaw le ama bokantle ba mothipa; le (3) Pinched Chainsaw Guide Bars, moo ho bala hampe ** lehong la compression khahlano le lehong la tsitsipano le koalang kerf slot bareng.
Ho pholoha tlokotsi ea mapolanka ho hloka khalemelo ea bobeli ha seha se tsamaea hampe: ** ho emisa mochine oa sakha hang-hang , ka ho hlokomela hore ** HA U LOKELA ho tsamaea ka tlas'a sefate se leketlileng, LE KA mohla u leke ho rema sefate se tšehetsang mohlolohali, 'me U SE KE UA hloa kapa ho hloa likotoana ho tloha tlase ho kutu e otlolohileng ("lebone la lebone la lebone la lebone"), le ho tseba mekhoa e metle ka ho fetisisa. ka lithapo tsa polasetiki tse remang, pitikisa sefate se leketlileng ho tloha hingeng ea sona u sebelisa cant hook kapa peavey, hula sekoti morao ka **sehula sa thapo / winch e tsamaisoang ka har'a sethala sa pulley **, kapa u kuta bokatlase ba palo ea selemo ho 45-degree equilibrium vector hore tsitsipano e lokolloe ntle le kotsi. Haeba ts'ohanyetso kapa ts'ohanyetso e sa tsoa etsahala, letsetsa sebakeng sa heno dinomoro tsa tshohanyetso hang-hang, 'me u hlahlobe litataiso tsa rona tse amanang le tsona phonyohile brush qubu ho cha le tshireletso ya mollo wa joang, sethopo sa moea se pshatleha le ho senyeha ha sefefo, le giant hogweed le wild parsnip dikotsi tse tlosang naha.
Etsa sena hona joale¶
- Haeba motho e mong a qeta ho otloa ke palo ea selemo e ntseng e thella, leoto le oelang la mohlolohali, kapa chainsaw kickback, letsetsa nomoro ea hau ea ts'ohanyetso ea lehae (911 in the US/Canada, 112 in the EU, 999 in the UK) HANG-HANG 'me u sebelise windlass Tourniquet (CAT / SOFTT-W) kapa leqeba le phahameng le le tiileng ka holim'a leqeba. maqeba a tiisitsoeng ka gauze). Haeba ho robeha ha sefahleho kapa mohlahare ka lebaka la ho otla ha sefate sa selemo ho etsa hore mali a kopane 'metsong, lulisa mokuli ea ikutloang a ntse a sekamela pele (kapa pōlela mokuli ea sa tsebeng ho phefumoloha ho Left Lateral Recovery Position ha u ntse u tšehetsa molala) e le hore mali a tsoe ka hanong.
- *Haeba sefate seo u se remang se fanyehiloe ("lodge") sefateng se seng, KILL THE CHAINSAW ENGINE hang-hang, khutlela morao ka tsela ea hao ea ho phonyoha ea likhato tse 45, 'me U SE KE UA tsamaea ka tlas'a kutu e sekametseng. bohole ba sefate **.
- ** LE KA mohla u se ke ua leka "Likharollo Tse Tharo Tse Bolaeang" sefateng sa mohlolohali se fanyehiloeng:**
- Ha ho mohla o kileng oa rema sefate se tšehetsang seo sefate se fanyehiloeng se phomotseng ho sona.
- ** LE KA mohla u se ke ua khaola makala a sefate se tšehetsang ha u ntse u eme ka tlas'a.**
- ** LE KA mohla u se ke ua rema likotoana tsa patsi tse bolelele ba limithara tse 1 ho isa ho tse 2 karolong e ka tlaase ea sefate se fanyehiloeng ("chunking down" / "kerese")** ka tšepo ea hore e tla oela holimo; sehiloeng se seng le se seng se etsa hore sefate se tebelle 'me se khannela sekoti morao sefubeng sa hau kapa se lebisa kutu ka morao hloohong ea hau.
- Ho theola sefate se fanyehiloeng fatše ka mokhoa o sireletsehileng, sebelisa o le mong FEELA oa mekhoa e meraro e lumelletsoeng ea OSHA/Forest Service ho tsoa ka ntle ho sebaka se oelang:
- Mokhoa oa A (Rolla Moqhaka): Tloha sekhutlong sa pivot ea lehong la hinge 'me u sebelise Cant Hook, Peavey, kapa Felling Lever e ts'oaroang nako e telele ho rolla/sotha kutu ka likhato tse 90 ho isa ho tse 180 ho potoloha axis ho fihlela makala a eona a tsoa moqhaka o tšehetsang.
- Mokhoa oa B (Letla Buto ka Morao): Khaola lehong ka hloko 'me u sebelise palo e telele ea lepolanka holim'a fulcrum ho suthisa butle morao ho tloha kutung.
- Mokhoa oa C (Winch / Terekere / Rope Puller ka Redirect Snatch Block): Hokela letjeketjane kapa letjeketjane le lekantsoeng ho pota-pota botlaaseng ba sefate se fanyehiloeng, tsamaisa thapo ea terata kapa thapo ea poho e otlolohileng ka ** snatch block (pulley) e khomaretsoeng sefateng se ka thoko ka ntle ho tsela ea ho oa**, 'me u hule letsoho ka morao.
Tirfor/ Maasdam sehula liropo) kapa terekere e fumanehang bonyane 2x bophahamo ba sefate hole le 90-degree angle.
- Haeba sekoahelo sa chaena sa hau se HLAKOA ka har'a kota e remang, tima sakha hang-hang 'me U SE KE U HLAHALA ka bohale holim'a lihapi. Khanna polasetiki kapa aluminium e thellang ka har'a kerf (kapa sebelisa sakha ea bobeli / seqha sa letsoho bonyane
15 to 30 cm [6 to 12 in]hole ka lehlakoreng la tsitsipano ka mora ho tshehetsa kota). - Pele u seha sefate sefe kapa sefe se kobehileng ("Spring Pole"), fumana mohala o tšekaletseng oa likhato tse 45 tlhōrōng ea koba, 'me U SE KE UA tšoara mothipa o ka holimo/ka ntle ka ho toba ka thapo. Ho e-na le hoo, likhoele mene hamonate ntle le ho qhetsola.
Danger
klzzwxh:0034 Ha sefate se remiloeng se tšoaa ka lehlakoreng la likhato tse 45 ho isa ho tse 60 ferekong ea sefate sa boahelani, hangata beng ba matlo ba leka ho rema lifate tse 1,5 (limithara tse 5) ho fihlela sefate se le seng se otlolohile. Fisiks e etsa hore sena e be leraba la lefu.** Nakoe nako ha u khaola karolo e itseng karolong e ka tlaase, ho etsahala lintho tse peli tse bolaeang: (1) Thepa e rahela morao ka mabifi (butt rebound) ha kutu e boima e ka holimo e oela holim'a sekheo se secha, e pshatla pelvis ea motho ea sebetsang kapa e e penya kutung; le **(2) Ha sefate se ntse se eme ka holimo (ho atamela likhato tse 75 ho isa ho tse 85), setsi sa sona sa matla a khoheli se fetoha ka mor'a lekala le ka holimo la snag **, e leng se etsang hore sebaka se setseng sa limithara tse 10 (maoto a 33) se theohele morao ka lehlakoreng le leng ** ka ho toba hloohong ea sehahi.
Sefate sa qeto: Hung-Up Widowmaker Tree vs. Bent Spring Pole vs. Pinched Chainsaw Bar¶
Sebelisa setlhare sena sa ho etsa qeto ka temo ea temo ea temo hang ha li-stall tsa hau, sefate se lula holimo, kapa ha u kopana le lifefo tse matla tsa sefefo.
flowchart TD
A["Chainsaw/ Boemo ba Tšohanyetso ba Ho Rema Sefate ka Woodlot"] --> B{"U Tobane le Kotsi efe ea Mechini?"}
B -->|"Sefate se HUNG UP (se lutse makaleng a sefate se seng) kapa setho se robehileng sa 'Widowmaker' se leketlile ka holimo."| C["HUNG-UP TREE / WIDOWMAKER PROTOCOL: 1. Kill saw engine 2. O seke oa tsamaea ka tlas'a sefate 3. Tlosa hlooho ea motlakase haeba bar e khomaretse 4. Sebaka sa kotsi ea folakha (2x sefate sa bophahamo) ha se tloha"]
B -->|"Sehlahla se kobehileng kapa lekala le kentsoeng ka tlas'a thipa e boima ('Spring Pole' tlas'a tsitsipano e phahameng)"| D["SPRING-POLE TENSION PROTOCOL: Ema ka HARE ho mothipa kapa likhato tse 45 ka morao; LE KA mohla u se ke ua sotha kapa ua ema ka pel'a arc e ka ntle"]
B -->|"Chainsaw guide bar e PINCHWE ka thata ka hare ho kutu e emeng kapa log e tshekaletseng"| E["PINCHED BAR PROTOCOL: Tima enjene ea chainsaw hang-hang + kenya brake ea ketane; LE KA mohla u se ke ua tšoara likoti"]
C --> F{"Na Sefate sa Hung-Up se ka phuthoa kapa sa tsamaisoa ka mokhoa o sireletsehileng ka letsoho?"}
F -->|"Sefate se Senyane/Se Bohareng (<25 cm / 10 ho DBH): Moqhaka o soahlaha hanyenyane"| G["Khetho ea 1: Roala kutu ea 90-180 deg e nang le Cant Hook / Peavey ho fihlela moqhaka o lokolla Khetho ea 2: Lever butt ho khutlela morao kutung ka pola ea lehong ea 3 m (10 ft)"]
F -->|"Sefate se Seholo/Se boima (> 25 cm / 10 ho DBH) kapa se tebile"| H["Khetho ea 3: Choke base + cable / ropo ka Snatch Block Pulley ho ea lehlakoreng + hula ho tloha >2x bophahamo ba sefate hole le Winch / Terekere (kapa hira Crane/Pro Arborist)"]
D --> I["Fumana ntlha ea ho Kobeha ka Sebele (45-deg bisecting angle) -> Beola maqeba a sa tebang ho UNDERSIDE (Compression Wood) ho fihlela kutu e thella butle."]
E --> J{"Sebaka sa Chainsaw se Pinched Hokae?"}
J -->|"Karolong e ka Morao ea Sefate se Emeng (Sefate se ne se lutse holim'a bar)"| K["Drive 2 Stacked High-Lift High-Lift Plastic Felling Wedges ho sehiloeng ka morao (kapa seha mokotla o hlokolosi oa liphallelo pela bar) ho phahamisa kutu ho ea pele holim'a hinge."]
J -->|"Ka har'a Log e Otlolohileng ea Bucking (Top-Tlama kapa Tlama ka Tlase)"| L["Weha lehlakore le bulehileng KAPA phahamisa/chota logong ka Cant Hook/Jack KAPA hlooho ea motlakase e butsoitseng ho tloha bareng ebe u khaola thipa ka 20 cm (8 in) hole."]
Karolo ea 1: Ho utloisisa Fizikia ea Fiber ea Wood: Compression Wood vs. Tension Wood¶
Sebaka se seng le se seng se penngoeng sa chainaw le palo e 'ngoe le e 'ngoe ea selemo e tsoelipanang e laoloa ke molao o le mong oa mekhoa ea meralo: **sekotoana sefe kapa sefe sa patsi se tšehetsang boima ba 'mele kapa se kobetsoeng mokokotlong se na le COMPRESSION ZONE (moo likhoele tsa lehong li petetsoang hammoho) le TENSION ZONE (moo likhoele tsa lehong li otlolohileng joalo ka likhoele tsa katara)*.
1. Mokhoa oa ho Bala Litlamo Tse 'nè Pele U Tšoara Lehong ka Chainsaw¶
Pele o khaola sefate se oeleng, sefefo sa sefefo, kapa sefate se sekametseng, tsebahatsa hore na ke lehlakore lefe la logong le ntseng le otlolloa (Tension) le hore na ke lehlakore lefe le petelitsoeng (Compression):
| Tlama Mofuta & Boemo | Sebaka sa Tension (Likhoele Tse Otlolohileng) se Hokae? | Sebaka sa Compression Zone (Likhoele Tse Petelitsoeng) li Hokae? | Ho Etsahala'ng Haeba U Seha ka Tsela e Fosahetseng (One Straight Cut)? | Tatelano e nepahetseng ya ho Seha Mehato e 2 |
|---|---|---|---|---|
| 1. Top Bind (E Tsheheditswe Mapheletsong a Bobedi, E sisinyeha Bohareng) (Loko o koala foro kapa o lutse holim'a likutu tse peli tse nang le moea tlas'a bohareng) | BOTTOM ea log e otlolohile ka thata | TOP ea log e petetsoa hammoho | Ho theola ho tloha holimo ho etsa hore kerf e ka holimo e koebe e koalehe ebe e tsikinyetsa bar bohareng. | Mohato oa 1 (Ho Hatisa Pele): Seha ⅓ ea bophara HO TLAS'A holimo. Mohato oa 2 (Tension Second): Qetella ka ho seha ** UP ho tloha tlase (Tension)** e le hore marotholi a sehiloeng a bulehe ka mokhoa o hloekileng. |
| 2. Tlamang e ka Tlase (E tšehelitsoe ka Bohareng, E Qetella ho Leketla Ka holim'a Hump/Lefika) (Letlapa le lutse holim'a lefika kapa tutulu e phahameng 'me lipheletso li leketlile moeeng) | TOP ea log e otlolohile ka thata | BOTTOM ea log e petelitsoe hammoho | Ho khaola ho tloha holimo ho ea holimo ho etsa hore tlase e fokotsehe kapa qetello e boima e theohele maotong a hao; ho poma ho tloha tlase ho phunya bar hanghang | Mohato oa 1 (Ho Hatisa Pele): Underbuck ⅓ ea tsela UP ho tloha tlase (compression zone).Mohato oa 2 (Tension Second): Fokotsa ** HO TSOA ho tloha holimo** ( tension zone) ho kopana le sehiloeng se ka tlase; log e oela e bulehile hole le bareng ea hau. |
| 3. Side Bind (Loko le Kentsoe Khahlanong le Sefate se Emeng kapa kutu e Moepa) | ** KA NTLE ** ea mothinya (hole le tšitiso) e otlolohile ka thata | **KAHARE ** ho mothinya (haufi le tšitiso) e petelitsoe hammoho | Ho ema ka ntle ho lekhalo le ho itšeha ka ho toba ho etsa hore logi e ** shapa ka mahlakoreng boemong ba sefuba **, ho pshatla likhopo kapa maoto. | Ema ka HARE ho mothinya (ho hodimo). Mohato oa 1: Khaola ⅓ ka HARE (Compress). Mohato oa 2: Khaola ho tloha KA NTLE (Tension) ka ntlha ea thipa ha u ntse u eme ka mokhoa o sireletsehileng ka hare ho kobeho. |
| 4. End Bind (Sefate se Boima se Phomotseng Moepeng o Moepa) | Tension e fokolang ea lateral, empa e kholo axial sliding weight | Karolo e felletseng e tlas'a **khatello ea khoheli ea axial ** ho theosa le leralla | Ha sema sa hau se se se le haufi le ho phethoa, thipa e ka holimo ea lithane tse 2 e thella fatše 'me e tiisa bar ea hau e bataletseng | Khanna **polastiki bucking wedge ka holim'a kerf ** hang ha bar e patoa 10 cm (4 in) ho teba ho boloka sekotjana se butsoe ha u ntse u qeta ho seha ho tloha lehlakoreng la mohloa. |
Karolo ea 2: Boemo ba Tšohanyetso 1: Ho Lokolla "Spring Pole" e Bent Ntle le ho Otloa Sefahlehong¶
Ka mor'a sefefo sa sefefo, sefefo sa leqhoa, kapa ts'ebetso ea ho rema lifate, likutu tse khōlō tse oeleng li atisa ho phunya lifate tse nyenyane tse phelang, limela kapa makala a matala (5 to 20 cm / 2 to 8 inches in diameter) ho theohela fatshe ka mokoloko o thata. Litsebi tsa meru li bitsa sena Spring Pole.
1. Ke Hobane'ng ha Ho Seha Bokaholimo ba Pole ea Selemo ho Etsa Joalo ka Bat ea Baseball ho ea mohlahareng¶
Lehong le thata le phelang kapa sefate sa conifer se kobehileng ka har'a mabenkele a sedikadikoe matla a ho tsitsa a elastic likhoeleng tse otlolohileng haufi le mokokotlo o kaholimo/ka ntle (Tension Zone).
- Ho Etsahala'ng Ha Sebatli se Seha se Otlolohile ka Holimo ho Khoro: Hang ha meno a saha e ohiang a phunyeletsa karolong e ka ntle ea 30 lekholong ea likhoele tse otlolohileng, lehong le setseng ha le sa khona ho tšoara nako ea ho kobeha. The sapling e phatloha ho ea holimo le morao ka nako e ka tlase ho
0.05 secondska likete tsa li-Newtons tsa matla, tse isang saha holimo sefahlehong sa opareitara kapa li otla motho ea sebetsang ka tlas'a selelu, mohlahare, 'metso, kapa lesapo la molaleng. - Tlhahiso e Bakang: Ho robeha ha mandible ka mahlakore a mabeli, ho robeha ha laryngeal (ho sitisoa ha moea hang-hang), kotsi e bohloko ea boko, ho robeha ha mokokotlo oa popelo, kapa maqeba a tebileng a sefahleho/molala.
2. Mokhoa o Sireletsehileng oa 45-Degree Underside Beta bakeng sa lipalo tsa Selemo¶
Le ka mohla u se ke ua khaola palo ea selemo haufi le ntlha ea eona e khokhothetsoeng (moo palo eohle e otlang holimo leholimong) 'me u se ke ua e khaola botlaaseng ba eona u ntse u eme ka pel'a eona. Latela Tshebeletso ea Meru ea US le Mokhoa oa ISA Certified Arborist 45-Degree Bisecting Vector Method:
+-------------------------------------------------------------------------+
| HOW TO RELEASE A BENT SPRING POLE WITH ZERO SNAPBACK |
| |
| Apex of Maximum Bend (45-Degree Bisector) |
| \ |
| .---. <-- TENSION WOOD (Top/Outside): |
| .' \ '. NEVER cut here first |
| / \ \ |
| | SHAVE \ Pinned Tip Under Heavy Log |
| | UNDERSIDE \_______ |
| Root Base | (Compression) ( O ) <-- Heavy Fallen Trunk |
| =================|=================================================== |
| |
| STEP 1: POSITION YOUR BODY SAFELY |
| Stand to the SIDE of the sapling (ideally on the INSIDE of |
| the curve, at a 45-degree angle behind the apex), with your |
| head and chest completely out of the vertical plane of recoil. |
| |
| STEP 2: FIND THE OPTIMUM RELEASE POINT (THE 45-DEGREE BISECTOR) |
| Imagine a straight horizontal line along the pinned tip and a |
| vertical line up from the roots; bisect that 90-degree corner |
| at a 45-degree angle right through the apex of maximum bend. |
| |
| STEP 3: SHAVE THE UNDERSIDE (COMPRESSION WOOD) SLOWLY |
| Place the top of the chainsaw bar against the UNDERSIDE (inner |
| belly) of the curve at the 45-degree point. Make a series of |
| shallow, gentle shaving passes (or a narrow V-notch) across |
| the underside compression fibers. |
| |
| STEP 4: WATCH THE SAPLING FOLD GENTLY LIKE A HINGE |
| As you remove the compressed belly wood, the stretched outer |
| bark fibers on top stay intact and act as a soft strap hinge, |
| allowing the spring pole to relax and fold down smoothly with |
| zero violent snap. Once all tension is gone, sever the strap. |
+-------------------------------------------------------------------------+
- Bakeng sa lipalo tse nyane tsa selemo (
< 5 cm / 2 inchesbophara): Sekoti se nchocho sa hand bypass lopper, pole pruner, kapa hand bow saw se sebelisoang ho tloha boleleleng ba letsoho ho ea ka lehlakoreng hangata se bolokehile ho feta ho tsoka ketane e boima ka borashe bo thata. - Bakeng sa Mapolanka a Maholo a Selemo (
> 15 to 20 cm / 6 to 8 inchesbophara): Tšoara kutu e kholo e kobehileng e le kotsi e feteletseng ea tsitsipano e phahameng: sebelisa ** sehiloeng sa mehato e meraro (kapa sehiloeng se boring se siea leqhama le ka morao)** ho tloha sebakeng se sireletsehileng sa ka hare-mokokotlo, kapa hula thipa ka thapo ea winch/terekere hole.
Karolo ea 3: Boemo ba Tšohanyetso ba 2: Ho Rarolla Sebaka sa Pinched Chainsaw ka Tsela e Sireletsehileng¶
Mosebetsi e mong le e mong oa chainsaw qetellong o ba le **bara ea tataiso e pinched **: ebang sefate se emeng se lula morao (sits back) nakong ea ho rema mokokotlo ka lebaka la moea, mokokotlo o otlolohileng, kapa moqhaka oa asymmetrical, KAPA kota e tšekaletseng e koalehile holim'a bar nakong ea ho bucking.
1. Hang-hang Molao oa Pele: Tlosa Motlakase Pele U Etsa Ntho E 'ngoe e Kotsi¶
Haeba sebaka sa hau sa chainsaw se kentsoe ka thata ka har'a sehiloeng:
- Koala sesebelisoa sa ho tima (
STOP) and Engage the Chain Brake. - Le ka mohla U se ke Ua Yank kapa U Sotha Ka Thata ho Li-Handles tsa Chainsaw: Ho hula ka mabifi ho koba litšepe tsa tataiso, ho hahola litumellano tse thibelang ho thothomela, kapa ho hulela logong holim'a litšepe tsa hau.
- ** Sebelisa Scrench ea Hao (Wrench/Screwdriver) ho Tlosa Li-Bar Nuts le Clutch Cover, Slip Chain Off the Drive Sprocket, le Phahamisa Enjene Powerhead Off the Studs:**
- Hona joale ke batere ea tataiso ea tšepe feela le loop ea ketane e khomaretsoeng sefateng, ha enjene ea hau e sireletsehile fatše ('me haeba u na le **bar e tataisang le ketane **, u ka e tlama holim'a hlooho ea hau ea matla ho etsa sekoahelo se sireletsehileng).
2. Boemo ba A: Ho Lokolla Chainsaw e Pinngoeng ka har'a Log e Otlolohileng ea Bucking¶
- Haeba e Pinnoe ka Top Bind (Seha ho Koetsoe ka Holimo): Sebelisa Cant Hook, Peavey, Timberjack, kapa 2-mithara (6.5-foot) pry pole holim'a boloko ba fulcrum ho **phahamisa bokatlase ba logi ka tlase ho sehiloeng ** ka 2 centimeters (
1 inch) kahoo kerf e ka holimo ea buleha; KAPA etsa **seko sa liphallelo20 to 30 centimeters (8 to 12 inches)ho ea ka lehlakoreng la pinched bar ** (seha ⅓ compression pele, joale ⅔ tsitsipano) ho sebelisa letsoho seqha sakha kapa spare bar. - Haeba E Pinnoe ka Tlase Tlama (Seha ho Koetsoe ka Tlase): Khanna polasetiki ea ho rema/e koaleha karolong e ka holimo ea sehiloeng ka selepe kapa hamore ho qobella kerf hore e bulehe, KAPA sebelisa pry pole ho phahamisa ntlha e omileng ea logong.
3. Maemo a B: Ho Lokolla Chainsaw e Pinngoeng Karolong e ka Morao ea Sefate se Emeng (Sefate "Sat Back").¶
Ha sefate se emeng se its'etleha ka morao holim'a bar ea hau nakong ea ho rema mokokotlo, ** u tobana le kotsi e potlakileng ea ho senya **: sefate se lutse holim'a bar ea hau ea tataiso 'me karolo ea 70 lekholong ea kutu ea eona e khaotsoe.
- Hlahloba hore na Lehong la Hao la Hinge le Ntse le Ntse le Ntse le Ntse le Ntse: Hafeela** lesela le lekanang la lehong la hinge le sa rehoang (
10% of tree diameterbophara le80% of tree diameterlong)** e lula e tiile pakeng tsa notch ea sefahleho sa hau se ka pele le sehiloeng sa mokokotlo oa hau, hinge e ntse e laola tsela ea sefate. - Khanna Lithako tse Fellang tsa Plastic tse Phahameng ka ho Fetisisa ka Karolong e ka Morao (Never Steel Wedges Near a Chain): Kenya e le 'ngoe kapa tse peli polastiki ea ABS e nang le phello e phahameng kapa lithako tse oelang tsa magnesium ka mokokotlong o sehiloeng ka morao kapa ka thōko ho bar e pentsoeng 'me u otle ka thata ka khetho e bataletseng ea selepe kapa
1.5 to 2 kg (3 to 4 lb)hamore. E phuthetsoe25 cm (10 in)ho rema likhahla ho hlahisa **2,000 ho isa ho 4,000 lik'hilograma (litone tse peli ho isa ho tse 4) tsa matla a ho phahamisa **, ho bula kerf2 to 4 centimeters (1 to 1.5 inches), ho lokolla bar ea hau e pinched, le ho suthela sefate pele holim'a hinge. - Haeba U Seha ka Hinge kapa Sefate se Itšetlehile Haholo Bakeng sa Mekhabiso: Khutla hang-hang. Tlolla hlooho ea motlakase haeba e bolokehile, tšoaea sebaka seo, 'me u hule sefate ho tloha bohole ba bonyane 2x bophahamo ba sefate u sebelisa winch, se hula liropo, kapa terekere e tsamaisitsoeng ka har'a sebaka se le seng sa pulley. **Le ka mohla u se ke ua khaola notch e ncha ea sefahleho ka lehlakoreng le leng la sefate seo mokokotlo oa sona oa mantlha o sehiloeng o se o khaola halofo ea kutu **.
Karolo ea 4: Tšohanyetso 3: Ho Theola Sefate sa "Mohlolohali" ka Sireletsehile.¶
Sefate sa se fanyehiloeng (hape se bitsoa lodged tree), mmoho le makala a shoeleng a robehileng a lutseng holimo ka holim'a sekoahelo ("widowmakers"), ke kotsi e le 'ngoe e bolaeang ka ho fetisisa merung. Esita le haeba sefate se leketlileng se shebahala se tiile ka thata ferekong ea sefate se seng, moea o matla kapa ho thothomela ha fatše ho ka etsa hore se theohe ka khutso ka mor'a metsotsoana e 1.5.
1. Lithibelo tse 'nè tse Feletseng tsa Sefate se Hung-Up¶
Tlas'a OSHA 29 CFR 1910.266(h)(2)(vii) le UK HSE (AFAG 302 / 303), liketso tse 'ne li hanetsoe ka thata:
- ** LE KA mohla U se ke Ua Tsamaea Kapa U Sebetsa ka Tlas'a Tsela e Itšetlehileng ea Sefate se Hung-Up.**
- ** HA HO LE KA HO HŌLA Sefate se Tšehetsang se Phahameng Sefate se Hung-Up:** Ho rema sefate se tšehetsang ha sefate sa lithane tse 3 se leketlile se sutumetsa moqhaka oa sona ho etsa hore sefate se tšehetsang ** se arohane ka ho otloloha ("mokuti-setulo")** kapa ho khanna lifate ka bobeli tseleng ea ho phonyoha.
- ** HA U SO U Hlile U Rema Sefate se Seng ka Morao ho Sefate se Hung-Up ("Domino Felling"):** Haeba sefate sa bobeli se lula holim'a sa pele, u na le bahlolohali ba babeli ba hokahaneng.
- ** LE KA mohla U se Ke Ua Hloeka Sefate se Hung-Up kapa U Seke Likotoana Tse Khutšoane ho Tloha Button ("Chunking Down").**
2. Mekhoa e meraro e Sireletsehileng ka Mehato ea ho Theola Sefate se Hung-Up¶
+-------------------------------------------------------------------------+
| 3 SAFE ARBORIST METHODS TO BRING DOWN A HUNG-UP TREE |
| |
| METHOD 1: ROLL THE TREE OFF ITS HINGE WITH A CANT HOOK / PEAVEY |
| (Best for small-to-medium trees up to 25-30 cm / 10-12 in) |
| 1. Inspect overhead for loose dead widowmaker branches first. |
| 2. Leave a corner of hinge wood on the side you want the tree to roll |
| toward, and sever the rest of the hinge. |
| 3. Clamp a Cant Hook, Peavey, or Felling Lever onto the trunk at waist |
| height, stand on the uphill/safe side, and heave with your legs to |
| ROLL the trunk 90 to 180 degrees until its upper limbs unscrew out |
| of the supporting fork and the tree drops to the ground. |
| |
| METHOD 2: LEVER THE BUTT BACKWARD WITH A LONG WOODEN PRY POLE |
| (When the butt is resting on or just in front of the stump) |
| 1. Cut a stout green hardwood pole 3 to 4 meters (10 to 13 feet) long. |
| 2. Place a solid round log chunk on the ground 30 cm (12 in) in front |
| of the hung tree's butt as a fulcrum. |
| 3. Wedge the tip of the pry pole under the butt, stand to the side at |
| the far end of the pole, and lever the butt backward step by step. |
| |
| METHOD 3: WINCH / ROPE PULLER / TRACTOR WITH A REDIRECT PULLEY BLOCK |
| (MANDATORY for large trees > 30 cm / 12 in or tight hang-ups)|
| 1. Wrap a rated choker chain or arborist sling around the lower butt. |
| 2. Anchor a Snatch Block (redirect pulley) to a strong standing tree |
| at a 90-degree angle to the side. |
| 3. Run a wire winch cable or low-stretch bull rope through the pulley |
| to a Hand Winch (Tirfor / Maasdam), ATV winch, or Tractor located |
| at least 2x the tree's height away outside the fall zone. |
+-------------------------------------------------------------------------+
Warning
Ke Hobane'ng ha U Lokela ho Sebelisa Thapo e Otlollang Tlase kapa Thapo ea Mohala (Le Pulley e Tsamaisang Bocha) Ha U Hōla Sefate se Hung.
1. ** LE KA mohla u se ke ua hula sefate se leketlileng ka kotloloho le terekere kapa teraka ntle le pulley e lebisang hosele (snatch block), 'me U SE KE UA sebelisa likhoele tse otlolohileng tsa nylon.
2. Maqhoele a ho hlasimolla nylon a otloloha ho fihla ho liphesente tse 20 tlas'a moroalo: haeba hook ea choker e thella kapa e thella tlas'a tsitsipano ea lithane tse 3, hook ea tšepe e hula ka fensetere e ka morao ka 200 km/h (125 mph). Sebedisa thapo ya poho e otlolohileng tlase kapa thapo ya terata mme o akgele kobo e boima kapa baki bohareng ba mola e le sethibela.
Linomoro tsa libaka tsa tšohanyetso le liprothokholo tsa mekhatlo¶
Haeba kotsi ea mapolanka e etsahala sebakeng sa mahaeng se se nang liaterese tsa literata, bula sesebelisoa sa k'hamphani ea smartphone ea hau 'me u bale **e tobileng GPS latitude le longitude coordinates ** (kapa what3words) ho dispatcher e le hore ba fanang ka thuso ea bongaka maemong a tšohanyetso kapa lihelikopta tsa sefofane li ka u fumana.
| Sebaka / Naha | Ambulense ea Tšohanyetso & Pholoso | Melao ea Tšireletseho ea Meru le Lihlahla | Lintlha tse khethehileng tsa Trauma & Rescue Protocol |
|---|---|---|---|
| United States & Canada | 911 |
Maemo a ho rema lifate a OSHA: 29 CFR 1910.266 Mokhatlo oa Indasteri ea Tlhokomelo ea Lifate (TCIA) / ANSI Z133 WorkSafeBC Forestry: 1-888-621-7233 |
Tšoara CAT Gen-7 Tourniquet, gauze ea hemostatic, le mololi oa tšohanyetso holim'a helmete ea hau ea ketane kapa lebanta. Bolella 911 haeba motho ea hlokofalitsoeng a kenngoa ka tlas'a kutu kahoo ** Pholoso e boima ea Lefapha la Mollo (ho phahamisa mekotla ea moea le ho robala) ** e rometsoe. |
| United Kingdom | 999 kapa 112 |
HSE / Sehlopha sa Boeletsi ba Meru le Meru (AFAG): Batataisi AFAG 302 le AFAG 304 |
Fana ka 999 opareitara e nang le Ordnance Survey (OS) Grid Reference kapa what3words location mme o kope HART / Air Ambulance bakeng sa ho sithabela kapa ho sithabela ha arterial chainsaw. |
| Mokhatlo oa linaha tsa Iropa | 112 |
Lekhotla la Europe la Meru le Litsebo tsa Tikoloho (EFESC) Maemo a Chainsaw (ECC 1 to ECC 4) |
Daela 112 (e solla tora efe kapa efe e fumanehang ea sepalangoang) ebe o kenya tšebetsong smartphone Sebaka se tsoetseng pele sa Mobile (AML) phetiso ea GPS. |
| Australia le New Zealand | Australia: 000**New Zealand: 111 |
Taelo ea Meru ea SafeWork Australia WorkSafe NZ Forest Operations Code | Sebelisa Emergency Plus (Emergency+) app naheng ea Australia ho bala lihokela tsa GPS ho 000 bakeng sa ho kokota ha helikopthara. |
| India le Asia-Pacific | India: 112 kapa 108Japane:** 119 |
Sesole sa Naha sa Karabelo ea Likoluoa (NDRF) / Litšebeletso tsa Naha tsa Mollo & Pholoso | Laola mali a methapo ea mali hang-hang ka sefofane sa windlass tourniquet 'me u boloke ho senyeha ha lesapo la mokokotlo nakong ea ho ntša. |
Lipotso tse botsoang khafetsa¶
If a hung-up tree is in the middle of my woods away from houses, can I just leave it alone and let nature blow it down in the next storm?
**NO: leaving an unmarked hung-up tree standing in a woodlot is a lethal trap for children, hikers, hunters, dogs, or yourself months later.** Under **OSHA (`29 CFR 1910.266`), US Forest Service, and UK HSE (`AFAG 302`)** rules, you must bring a hung-up tree to the ground the same day using a cant hook, pry pole, or winch. If darkness is falling or you must fetch a winch, tractor, or arborist, you **MUST encircle the entire hazard zone (a radius of at least 2x the tree's height in all directions) with high-visibility DANGER flagging tape** until you return to winch it down.
Why should I never use a steel log-splitting wedge in a chainsaw felling cut to free a pinched bar?
Driving a hard **steel splitting wedge** into a chainsaw kerf while the chain is on the bar carries two major hazards: first, if the steel wedge touches the chainsaw chain, it **ruins the cutter teeth or snaps the chain**. Second, striking a steel wedge with a steel hammer or axe poll can launch **high-velocity steel shrapnel splinters** into your eyes or neck artery. Always carry two **high-impact ABS plastic or soft magnesium felling wedges (`20 to 25 cm / 8 to 10 inches` long)** in your pocket when operating a chainsaw.
What is a "Barber Chair" tree split, and how is it related to leaning trees and spring tension?
A **"Barber Chair"** occurs when a tree with a heavy **forward lean** splits **vertically up the middle of the trunk** before the felling back cut is finished: the rear half of the trunk kicks violently backward off the stump and pivots down onto the operator's head. To prevent a forward-leaning tree from barber-chairing, arborists use the **Bore-Cut (Plunge-Cut) with a Back Strap technique**: after cutting the front face notch (`70-degree open face`), bore the tip of the chainsaw bar straight through the center of the trunk behind the hinge, cut forward to set the hinge width, and then cut backward while leaving a **`3 to 5 cm (1.5 to 2 inch)` uncut holding strap at the back**, which is severed last from a safe angle.
When bucking a big uprooted windblown tree after a storm, why did the root ball suddenly slam back into the hole when I cut the trunk?
When a storm blows down a whole tree with a massive dirt-and-stone **root ball (`root plate`)** standing vertically at the base, the weight of the trunk is often the only thing counterbalancing the **3-to-10-ton root ball** from snapping back into its crater. If you sever the trunk close to an upright root plate, the **multi-ton root ball snaps 90 degrees backward into the hole like a giant mousetrap**, burying anyone in the crater while launching the cut trunk end **2 to 3 meters (6 to 10 feet) into the air**. Always **chock and brace the root plate**, never stand on the crater side, and make your first release cut far up toward the crown.
Do chainsaw protective chaps or trousers stop a battery-powered electric chainsaw the same way they stop a gasoline chainsaw?
**Standard kevlar/ballistic-nylon chainsaw chaps (`ASTM F1897 / EN ISO 11393 Class 1`) work by pulling out long fibrous threads that wrap around the drive sprocket and stall a two-stroke GASOLINE clutch.** However, many **high-torque brushless electric / battery chainsaws** have massive low-end electric torque and lack a centrifugal clutch, meaning an electric saw can cut further into standard Class 1 chaps before its overload sensor trips. Always wear **UL-certified Class 1 or Class 2 (`24 m/s`) multi-ply chainsaw chaps**, keep your left thumb wrapped around the front handlebar, and never operate any chainsaw one-handed.
Litataiso tse amanang¶
- Ho phonyoha ho chesoa ha qubu ea borashe, ho hotetsoa ha joang, le tšireletso ea litanka tsa metsi tsa mahaeng
- Giant Hogweed, Wild Parsnip le Poison Hemlock: ho thibela ho chesoa ha lik'hemik'hale tse kentsoeng ke khanya ea letsatsi.
- Ho phatloha ha moea oa sethopo, ho hloleha ho futhumala ha leholiotsoana, le ho tima ha pompo ea hydroponic
- Silo gas (nitrogen dioxide) le mokelikeli oa mokoti oa moiteli: ho phela ha khase ea polasing ea mahaeng
- Linomoro tsa maemo a tshohanyetso
Mehloli le tataiso ea semmuso¶
- Taolo ea Tšireletseho le Bophelo bo Botle Mosebetsing (OSHA, United States): Maemo a Ts'ebetso ea ho Rema Lifate (
29 CFR 1910.266) le OSHA Logging eTool: Manual Felling, Hung-Up Trees, Spring Poles, le Bucking Binds. - Tšebeletso ea Meru ea United States (USFS): Koetliso ea Koetliso ea Chain Saw le Crosscut Saw (Phatlalatso 0667-2805-MTDC: 45-Degree Spring Pole Release, Wedge Mechanics, le Bore Cutting).
- Molaoli oa Bophelo bo Botle le Tšireletseho (HSE, United Kingdom): AFAG 302 (Basic Chainsaw Felling and Hung-Up Trees), AFAG 303 (Spring Poles), le AFAG 304 (Cross-Cutting).
- Setsi sa Sechaba sa Tšireletseho le Bophelo bo Botle ba Mosebetsi (NIOSH / CDC, United States): Temoso ea NIOSH: Ho Thibela Likotsi le Lefu la Ba remang Lifate (Khatiso ea 95-101).
- Mokhatlo oa Machaba oa Temo ea Lifate (ISA) & Mokhatlo oa Indasteri ea Tlhokomelo ea Lifate (TCIA): Litlhoko tsa Tšireletseho tsa ANSI Z133 Bakeng sa Ts'ebetso ea Lifate tsa Lifate (Rigging, Redirect Blocks, le Personal Protective Equipment).