Chainsaw Kickback, Tiirarka Guga, iyo Dhaawacyada Burburinta Geedka¶

Chainsaws and timber felling rank among the deadliest mechanical hazards in both professional forestry and homeowner storm cleanup. A modern gasoline or battery-powered chainsaw drives a loop of razor-sharp steel cutters around the guide bar at linear speeds of 18 to 28 meters per second (40 to 62 mph) while the engine spins at 10,000 to 14,000 revolutions per minute (RPM). Unlike a kitchen knife or sheet-metal edge that slices a clean linear cut, chainsaw teeth are engineered as miniature gouging chisels that chew out a 6-to-10-millimeter-wide (0.25-to-0.4-inch) kerf channel, ripping and avulsing skin, muscle, bone, and major arteries in a fraction of a second.

When the upper tip of a chainsaw guide bar accidentally touches a branch, a hidden log, or the side of a pinching kerf, the saw can whip backward in a 90-degree arc toward the operator's face, neck, left shoulder, or thigh in 0.10 to 0.15 seconds, which is faster than the 0.20-to-0.25-second neuro-muscular reaction time of the human brain. Even more fatal than the saw blade itself are the immense gravitational and elastic energies stored inside standing trees and storm-downed timber: falling dead overhead limbs (widowmakers), explosive vertical trunk splits (barber-chairing), bent saplings under tension (spring poles), and root-ball rollbacks that crush operators after a storm; see storm and hurricane cleanup. Knowing how to stop arterial chainsaw bleeding immediately, how to safely extricate a pinned worker without triggering a secondary log roll, and how to read wood tension before making a cut saves lives.

Hadda samee tan¶

1. Shut off the chainsaw engine or engage the front chain brake immediately before approaching an injured operator. Never step into the reach of a running chainsaw held by a startled or collapsing victim. Flip the ignition stop switch to OFF and push the front hand-guard paddle forward to lock the chain brake.
2. ** Isla markiiba codso cadaadis toos ah oo riixaya ama muraayadda muraayadaha dabaysha si aad u hesho dhiigbax daran oo addin ama qoorta ah. Dhiig karka ama isku geynta cudud ama lug, ku xidh muraayadda dabaysha ** dalxiiska 5 ilaa 7 sentimitir (2 ilaa 3 inji) oo ka sarraysa nabarka** oo leexi ilaa uu dhammaan dhiiggu joogsado; nabarrada qoorta, garabka, ama gumaarka, ku xidh godka si adag faashad dhiig-baxa ama faashad nadiif ah oo si adag u cadaadi labada gacmood; eeg gargaarka degdegga ah ee dhiig baxa.
3. ** Isla markiiba wac nambarka deg-degga ah ee degaankaaga oo sii sax isku-duwayaasha GPS-ka ee miyiga ama meelaha marinnada laga galo.** Wac 911 gudaha Mareykanka iyo Kanada, 112 gudaha Midowga Yurub, ama 999 gudaha Boqortooyada Midowday nambarada degdega ah). Haddii aad ka shaqaynayso meel qoryo fog ah, qof labaad u dir wadada wayn si uu u calaamadiyo ambalaasta ama hago helikobtar samatabbixin caafimaad oo hawada ah.
4. **Ka fiirso laamihii "carmalka" ee shaqada laga joojiyay oo hubi xasiloonida geedka ka hor inta aanad ag jilba joogsan dhibbanaha geedka la jaray. Guji ama goo rog-rogadka dhinaca hoose si ayan ugu sii dagin dhibbanaha ama ku burburin.
5. **Raac Xeerka Burburinta 15-daqiiqo ah haddii jirrid culusi ay ku dheggan tahay lugaha ama miskaha dhibbanaha. Haddii lagu hoos dhejiyay jir weyn ** in ka badan 15 daqiiqo ***, sug dhakhaatiir caafimaad oo horumarsan si ay u bixiyaan dareeraha xididka iyo dawooyinka * ka hor * in ay miisaanka qaadaan, ilaa laabtoodu aysan neefsan karin; eeg burburka dhaawaca iyo cilladda qaybta.
6. **In la ilaaliyo dhaq-dhaqaaqa laf dhabarta oo si adag looga daweeyo shoogga ka dib marka ay xaaska guurto ama tiirka guga. Bukaanka ku dhig mid fidsan, weli, oo ku duud buste diiran oo qallalan adigoo la soconayo neefsashadooda.

Afarta xoogag fal-celiska ah ee chainsaw iyo sababta dib u laabashadu u garaacdo falcelisyada aadanaha¶

Hawl wadeen kasta oo chainsaw ah waxa uu la kulmaa afar awoodood oo falcelis ah oo ay abuureen silsiladda wareegta ee la falgasha alwaax. Fahamka sida ay ciidamadani u dhaqmaan gacmahaaga waxay ka hortagtaa luminta xakamaynta ee u horseedda dhaawac.

flowchart TD
    A["Silsilad ama Jarida Geedka Gurmadka"] --> B{"Dhaawac noocee ah ayaa dhacay?"}
    B -->|"Jeexitaanka Bawdada Caleenta Chainsaw (Bawdada, Gacanta, Qoorta, ama Wejiga)"| C["KORMEERKA DHIIGGA halbowlaha ah"]
    C --> D["Dhaawaca Limb: Codso dalxiis ganacsi 5 ilaa 7 cm korka boogta + cadaadis toos ah"]
    C --> E["Qoorta / Garabka / Dhaawaca Gumaarka: Ku xidh nabar si adag faashad oo qabo cadaadis gacanta ah oo adag"]
    B -->|"Lagu dhejiyay Jirrida Geedka Hoostiisa ama Kubbada Xididada"| F{"Xabadka/mareenka hawadu ma la jajabiyey AMA ma lagu dhejiyay <15 daqiiqo?"}
    F -->|"Haa: Laabku waa lagu dhegay ama <15 daqiiqo"| G["Jeex/ sariirta sariirta ka soo horjeedda duubista, ka dibna kor u qaad miisaankaaga isla markiiba"]
    F -->|"Maya: Lugaha/miskaha ayaa lagu dhejiyay> 15 daqiiqo oo neefsashadu waa ok"| H["Log ammaan ah oo weelaynta leh; wac 911/112/999; sug borotokoolka fayraska Crush Syndrome IV ka hor inta aanad qaadin"]
    B -->|"Waxaa ku dhuftey Madaxa Carmalka Sameeyaha Limb ama Cirifka Guga"| I["Koofiyadaha ku dhaaf meesha haddii aad neefsanayso; madaxa ama laf dhabarta oo aan dhaqdhaqaaq lahayn; ka hubi dhaawaca laabta/caloosha"]

1. Laad wareeg ah (Dabinka Sanka ee Upper-Quadrant)¶

** Laad-wareejin *** waxay mas'uul ka tahay masiibada ugu xun ee wejiga, qoorta, iyo garabka silsiladaha:

• ** Fiisigiska Aagga Kickback-ka ee Upper-Quadrant:** Sida silsiladda miinshaarku ku wareegeyso caarada wareegsan (sanka) ee baarka hagaha, ilka goysa ee ** rubuc-sare ee caarada bar *** waxay u socdaan hoos iyo gadaal xagga hawlwadeenka 20+ mitir halkii labaad (45+ mph). Haddi ilkhaas sanka sare ahi ay taabtaan shay adag (sida loox labaad oo ku qarsoon kan aad gooynayso gadaashiisa, laanta laanta, dhinaca daloolka go'ay, ama wasakh adag oo la qaboojiyey), iliggu wuu dhex qodaa oo ma jiidi karo shayga aan dhaqaaqin ee miinshaarka.
• ** Falcelinta Sharciga Saddexaad ee Newton ee isla markiiba:** Halkii la jari lahaa, ilka qodista waxa uu u gudbiyaa dhammaan firfircoonida wareegta ee matoorka si uu u laado cidhifka birta hagaha si xoog leh ** kor iyo gadaal u cidhiidhi si toos ah madaxaaga iyo garabka bidix**.
• Waa maxay sababta falcelinta bini'aadmigu aysan u joojin karin: Laad-wareejin-sare oo RPM ah ayaa u rogi doonta baarka hagaha 90 darajo kor gudaha 0.10 ilaa 0.15 ilbiriqsi. Sababtoo ah dareenka neerfaha bini'aadamka wuxuu qaadanayaa ugu yaraan 0.20 ilbiriqsi kaliya si uu uga socdo ishaada ilaa murqaha gacantaada, si miyir leh uma falcelin kartid waqtiga. Kaliya laba difaac oo makaanik ah jooji daabka ka hor inta uusan ku dhicin wajigaaga:
• ** Haddii aad ku qabato suulka bidix si buuxda hoosta gacanta hore:** Haddii aad gacantaada hore ku qabato "suulka furan" ee daanyeer (suulka oo ku yaal meesha sare ee baarka oo ku ag yaal farahaaga), laadku waxay isla markiiba ka jeexisaa gacan-qabsiga farahaaga. Duubista suulka bidix ee hoosta baarka waxay qufulaysaa qabsashadaada oo waxay ku qasbeysaa miinshaarka inuu ku wareego gacantaada bidix, adigoo ku garaacaya gadaasha cududdaada bidix si toos ah ** silsilad bireega**.
• ** Biriiga Silsiladda Inertia iyo Mechanical:** Silsiladda silsiladda ah ee shaqaynaysa waxay joojisaa silsiladda wareegaysa ee dhimatay 0.06 ilaa 0.12 sekan midkood marka gacantaada bidix ay ku dhufato paddle-ka ama marka miisaanka inertia gudaha gudaha uu dareemo xoog-muquuninta sare ee G-hubka.

2. Jiid, dib-u-jiid, iyo xoog falcelin qanjaruufo toos ah¶

Dhirta jarista iyo dilaayaasha nadiifinta duufaanka: carmalka, kuraasta timo-jaraha, tiirarka guga, iyo kubbadaha xididka¶

Kaynta shaqada iyo nadiifinta deegaanka ka dib duufaanta, dad ka badan ayaa lagu dilay ** alwaax ay gooyeen ** marka loo eego ilkaha silsiladda. Kahor intaadan taaban miinshaar ordaya geed kasta oo taagan ama dumin, ka baar alwaaxyada afartan khatarood ee makaanikada ah:

1. "Carmallada ka dhintay" iyo geedaha laalaada¶

Carmalka laga dhintay waa xubin kasta oo jabtay, dhimatay, qudhuntay, ama go'day oo si dabacsan uga laadlaadsan daabka sare ee geedka aad goynayso (ama geed isku dheggan) iyo sidoo kale geed go'ay oo kala badh hoos ugu dhaca laamaha geedka deriska ah (**geed la soo deldelay ***):

• Waxa kiciya gariirku wuu soo dhacaa: Isla marka silsiladda silsiladaadu ay goyso salkeeda geed ama aad ku dhufato goyn balaastiig ah faashash, gariirka farsamada ayaa kor u kacaya jirridda oo ruxayaa 100-kilogram (220-rodol) addimo oo mayd ah oo ka yimid 15 mitir (50 cagood). Laamaha dhacay ayaa aamusan iyadoo ay dhegahaagu dhegaha ka furayaan guuxa 110-decibel ee silsiladda iyo dhegahaaga.
• Saddexda xeer ee ugu waaweyn ee geedaha la soo laadlaadiyay: Haddii geed aad jartay uu geed kale ku dhex milmo oo uu diido inuu dhulka ku dhaco:
• waligaa ha marin hoostiisa geedka laalaada.
• Weligaa ha isku dayin inaad tuurto geedka taageerada ah ee geedkii hore ku tiirsado.
• ** Weligaa ha korin jirridda tiigsan lahayd ama ha isku dayin inaad geedka tiigsanaysa hoos u gooyso "tubo-tubo" gaaban oo toosan xagga hoose.

2. "kursiga-timo-jaraha" jirridda taagan ayaa kala go'day¶

** Kursiga timo-jaraha *** wuxuu dhacaa marka geedku leeyahay caaro hore oo culus (ama ay afuufo dabayl xoog leh ama ay dhexda qudhunto) oo hawlwadeenku wuxuu bilaabo samaynta dib-u-dhigid caadi ah oo toosan ka hor inta aan qoriga ku filan la dejin. Ka hor inta aan la gooyn qeybta dambe, culeyska foorarsiga weyn ee geedka ** wuxuu jirridda si toosan u kala qaadaa hadhuudhka ilaa 3 ilaa 6 mitir (10 ilaa 20 cagood) oo leh dhawaqa qarxa ee rasaasta qoriga ***. Halka sare ee geedku uu hore u soo dhacayo, jeexjeexyada dambe ee jirriddu waxay si xoog leh u laadanayaan ** dib ugu laabashada jirrid ***, waxayna ku burburinaysaa laabta hawlwadeenka iyo madaxa oo dhulka ku haya nus ilbiriqsi gudahood.

• Kahortag: Waligaa ha isticmaalin jaan goyn toosan oo toosan oo ku taal geed aad u janjeera (sida dambas, hickory, geed, ama eucalyptus). Xirfadlayaasha xirfadlayaasha ah waxay adeegsadaan **-goyn gaar ah (plunge-cut) oo leh suunka dambe ee haya ** ama waxay ku duubaan suunka jiirka culus ee jirridda ka sarraysa cirifka si looga hortago kala-go'an toosan.

3. Tiirarka guga (saplings qaloocsan oo ka hooseeya xiisad laastikada ah)¶

Duufaan, duufaan baraf ah, ama duufaantu waxay hoos u dhigtaa geed weyn, daraasiin geedo yaryar ah oo yaryar (5 ilaa 20 sentimitir / 2 ilaa 8 inji) ayaa la dhejiyaa oo labanlaabantay oo u leexiya labajibbaarro adag oo hoostooda jirridda culus. Geedahaan qaloocan waxaa loo yaqaan ** tiirarka guga **:

• Tamar katapult kaydsan: Sapling qaloocsan wuxuu kaydiyaa kumanaan joules ee tamarta guga ee laastikada ah. Haddii mulkiilaha aan khibradda lahayni kor u socdo oo uu saaro silsiladda saxda ah ee sare ee qalooca cidhiidhiga ah ee qaansada, fiilooyinka alwaaxda ee hoosta ku yaal iyo fiilooyinka kacsan ee sare ayaa isla markiiba kala baxa, garaaca cirifka dhumucdiisuna waxay kor u qaadaan ** 60 ilaa 100 km / h (37 ilaa 62 mph) chainsaw dib ugu celi wejiga hawlwadeenka.
• Sida loo sii daayo tiirka guga si badbaado leh: Istaag gudaha ama si badbaado leh uga bax diyaaradda toosan ee qaansada. Aqoonso ** barta foorarsiga ugu badan** (halkaas oo khad toosan oo toosan male-awaal ah oo xididdada ka soo jeeda uu la kulmo xariiq toosan oo ka soo jeeda xagga sare ee biinanka ah). Halkii aad si toos ah uga goyn lahayd dusha sare ee qaansada oo hal la gooyo, ** xiir dhuuban, kerfs-gacmeedyo oo dhan xagal 45-degree ah si ay fiilooyinka alwaaxdu u taahaan oo si tartiib ah ugu foorarsadaan cidhifyada iyada oo aan si xoog leh u dhicin, ama ka goo caarada musqusha oo ka fog foorarka adigoo taagan jir ka dambeeya.

4. Kubadaha xididka la rujiyay (taariko xidid) oo godka dib ugu soo laabanaya¶

Marka duufaantu ay ku dhufato geed weyn oo xididdada ah, 3-ilaa-5-mitir (10-ilaa-16-foot) ah oo dhererkiisu yahay 3-ilaa-5-fiit (10-ilaa-16-foot) oo ah darbi wasakh, dhagxaan, iyo xididdo ah ayaa si toos ah uga sarreeya god dheer. Jirridda jiifka ee culus waxay u shaqeysaa sida miisaanka counter-weight haysta in kubbadda xididka badan ee tan ay kor u dhaaftay.

• Dabinka kubbadda xididka ee dilaaga ah: Marka uu qof gooyo jirridda ugu weyn ee u dhow saldhigga geedka la rujiyay, miisaankii ka-hortagga ayaa isla markaaba meesha ka baxaya. 2,000-ilaa-10,000-kilogram (4,400-ilaa-22,000-pound) kubbadda xididku waxay dib ugu laabataa daloolkeeda hal ilbidhiqsi sida jiirka weyn. Qof kasta oo taagan ama u dhow godka xididka (ama carruurta ku ciyaarta godka ka dib marka jirridda la gooyo) waa la aasayaa isagoo nool oo isla markiiba la jajabiyaa.
• Xeerka: Weligaa ha istaagin dhinaca godka xididka ee geed la rujiyay, ku xidh oo ku mari saxanka xididka alwaax culus ama qalabka qodista ka hor inta aanad jarin, oo jirriddaada ugu horeysa ka dhig mid kor u jaraysa xagga taajka halkii aad ku xigi lahayd saxanka xididka.

Cadaadiska vs. alwaax xiisadda: sida loo gashado geedo dhacay iyada oo aan la jiidin ama garaacin¶

Marka jirridda geedka dhacday loo gooyo dhererka xaabada (bucking) ama la nadiifinayo geed ka soo dhacay dariiqa ama saqafka, logu wuxuu u dhaqmaa sidii alwaax dhisme oo raran oo lagu taageerayo hal ama laba dhibcood. Cufisjiidku waxa uu qalloociyaa logga, isaga oo abuuraya laba goobood oo culayska maskaxda ah oo iska soo horjeeda oo alwaax ku dhex jira oo hawl wadeen kastaa uu akhriyo ka hor inta aanu jarin:

1. ** Aagga xiisadda (fiber-yada oo kala fidsan):** Dhinaca looxa ee fadhiya ** bannaanka laabashada**, fiilooyinka alwaaxda ayaa si adag loo jiidaa sida xadhkaha gitaarka. Markaad gooyso alwaax kacsan, kerf (sarkaalka miinshaar) ayaa si ballaaran u jiidaya; Haddii aad ka gooyso dhammaan dariiqa dhinaca xiisadda kaligaa, 2 sentimitir ee u dambeeya (0.8 inji) ee alwaax ah ayaa dillaaci doona oo si xoog leh u kala goyn doona.
2. ** Aagga isku-duubnida (fiber-yada oo la isku tuujiyo):** Dhinaca looxa ee fadhiya gudaha laabashada, fiilooyinka alwaaxda waxaa la isku jajabiyaa culeyska jirridda. Haddii aad si qoto dheer u gooyso dhinaca isku-buufinta marka hore, kerf-ka xiritaanka ** wuxuu ku dhejiyaa baarka hagaha chainsaw si adag sida vise** wuxuuna kiciyaa dib-u-celinta toosan ee rabshadaha leh ama laad wareeg ah.

Silsilad toogashada: khatarta rasaasta xawaaraha sareeysa ee silsilad miinshaar ah oo jaban¶

Iyadoo dadka intiisa badani ay og yihiin wax ku saabsan laad-ku-celinta-bar-bar-dhigga, hay'adaha badbaadada kaymaha ayaa sidoo kale ka digaya ** toogashada silsiladda ** , dhacdo inta badan ku dhacda alwaaxda-xawaaraha sare leh ee farsamaysan iyo silsiladaha awoodda sare leh ee si liidata loo ilaaliyo marka silsiladda wadista gashato ay ku qabato RPM buuxa:

• Sida silsiladda toogashada u dhacdo: Marka silsilad miinshaar ah oo leh xiriirin dilaacsan, gooyayaal caajis ah, ama xiisad dabacsan ay jebiso meel u dhow sprocket-ka darawalka, dhamaadka silsiladda jaban ayaa ku wareegsan sanka baarka sida dibi. Isku xirka cidhifyada silsiladda karbaashku waxa uu dedejiyaa 300 mitir ilbidhiqsikii (1,000 cagood ilbidhiqsikii) oo goostay, isaga oo hawada ku duulaya tamar kane ah oo ah **.38-caliber xabad qori gacmeed **.
• ** Cawaaqibta caafimaad iyo ka-hortag Had iyo jeer ka fogow dadka ag taagan ugu yaraan ** laba dherer oo geed ah (ama 15+ mitir / 50+ cagood inta lagu jiro barar)** ka fogow diyaaradda bar chainsaw, hubi xiisaddaada silsiladda iyo saliidda mar kasta oo aad shidaal ku shubto, iskana tuur silsilad kasta oo ay soo gaadhay garaacid dhagax adag ama muujin dildilaaca timaha ee xargaha xadhigga.

Gargaarka degdegga ah ee dildilaaca silsiladda iyo dhaawaca geed-goynta¶

Sababtoo ah dhaawacyada silsilada ah waxay had iyo jeer ka dhacaan deyrarka danbe, kaymaha miyiga ah, ama xaafadaha duufaantu waxyeelaysay halkaas oo ambalaasyadu ay wajahaan waqtiyo safar dheer, isla markiiba xakamaynta dhiigbaxa ayaa go'aaminaya badbaadada.

Tallaabada 1: Joojinta dhiigbaxa halbowlaha ee masiibada ah (Daaqadda 3-daqiiqo)¶

Dib-u-soo-celinta silsiladda ama dib-u-celinta inta badan waxay ku dhacdaa afar qaybood oo anatomical ah: ** bowdada bidix ee hore ** ( halbowleyaasha femoral ), ** dhabarka gacanta bidix iyo cududda hore ** (radial/ulnar arteries iyo tendons extensor), ** garabka bidix iyo luqunta ** (subclavian, carotid, iyo weelasha jugular gudaha***).

1. Dharka nabarka saar oo si degdeg ah cadaadis toos ah u mari: Qabo marada ugu nadiifsan ee la heli karo (maro dhaawac ah oo ka yimid xirmada suunka goynta, funaanad laalaaban, ama tuwaal nadiif ah) oo si toos ah ugu cadaadi dhammaan miisaanka jidhkaaga isha dhiigbaxa.
2. ** Codso dalxiiska muraayadda ganacsi ee dhiigbaxa cududda ama lugaha:**
3. ** Ha ku lumin wakhtiga suunnada, xargaha kabaha, ama siliga (kuwaas oo gooya maqaarka adiga oo aan dhalin cadaadis wareeg ah oo ku filan si uu u daboolo halbowleyaasha femoral ee qoto dheer gudaha bowdada).
4. Dhig dalxiiska dabaysha ganacsiga (sida CAT ama SOFTT-W) 5 ilaa 7 sentimitir (2 ilaa 3 inji) ka sarraysa nabarka silsilada ah (u dhow lafta jilibka, waligaa si toos ah ha uga kor marin koofiyadaha ama suxulka). Haddii nabarku uu aad ugu sarreeyo bowdada oo aadan ogaan karin inta uu le'eg yahay jeexan ka hooseeya cutubyada chainsaw ee dhiigga qooyay, dhig dalxiiska "sare oo cidhiidhi" meesha ugu sarreysa ee bowdada.
5. U soo jiid suunka sida ugu dhakhsaha badan ee suurtogalka ah marka hore, ka dibna marooji usha dabaysha ilaa dhiigbaxa cas ee dhalaalaya uu si buuxda u istaago, ku xidh usha cajaladaha, oo ku qor wakhtiga codsiga suunka ama foodda bukaanka; eeg dhiigbax daran iyo codsi dalxiis.
6. ** Xirmooyinka nabarka ee qoorta, lafta-collarka, kilkilada, ama goynta gumaarka:**
7. Ma dhejin kartid dalxiis qoorta, garabka, ama gumaarka.
8. Jeex fur baakidh ah ** faashad dhiig-bax (ama duub faashad nadiif ah oo nadiif ah), ku riix faashad farahaaga gacmo-gashi hoos u hoos ugu dhig gunta hoose ee daloolka dhaawaca midigta weelka kacaya ilaa daloolku si adag ugu xidho maqaarka maqaarka, oo qabo ** joogto ah, oo aan kala go 'lahayn oo laba-gacanood ah ugu yaraan ilaa 5 dariiqo* qaado.
9. Haddii aad xidhidhayso nabarka qoorta, cadaadis si adag hoos ugu mari godka nabarka ama dhinaca kilkisha ka soo horjeeda si aadan u burburin hawo-mareenada (dabaysha) ee ku taal bartamaha cunaha.

Talaabada 2: Maareynta xabxabka avulsion-ka ee jeexjeexan, fiilooyinka kevlar chap, iyo jabka lafaha¶

• Ha ka soo bixin Kevlar tufted ama fiilooyinka naylon ballistic ka nabarka bowdada chainsaw: Marka silsilad-wareeggu uu ku dhufto cutubyada silsiladda ilaalinta ah, daboolka sare ayaa dillaaca oo kumannaan fiilooyin ballistic ah oo dhaadheer oo adag ayaa ka soo baxa suufka si ay u xirmaan sprocket-ka chainsaw-ga oo ay u joojiyaan mishiinka. Haddii silsiladdu qayb ka mid ah gudaha u gasho maqaarka ka hor inta aanay istaagin, boqollaal fiilooyinka ballistic ballistics wasakhaysan, jajabyo alwaax ah, iyo dhibco saliid ah oo bar-iyo-silsilad ah ayaa ku dhex milmi doona hilibka dillaacsan. Ku dhaaf dhammaan fiilooyinka qoto dheer ee goobta qalliinka ee qolka qalliinka; si fudud dhaawaca oo dhan ugu dabool maro qoyan ama qallalan oo nadiif ah oo cadaadis saar.
• ** Dib-u-deji daboolka maqaarka ee waaweyn ee jeexjeexan si tartiib ah kaliya haddii loo baahdo si loo joojiyo dhiigbaxa, ka dibna kab:** Sababtoo ah gooyayaasha chainsaw waxay jeexjeexaan kanaal ballaaran oo unug ah, nabarrada qotodheer waxay badanaa ka mid yihiin jajabyo isku dhafan oo ah radius, ulna, patella, ama femur; ku dhaqdhaqaajisaa addinka kab adag ka dib marka dhiigbaxa la xakameeyo; eeg lafaha jabay iyo murgacashada.
• ** Kahortagga hypothermia ee bukaannada dhiig-baxa:** Dhiig luminta weyn si dhakhso ah ayuu u baabi'iyaa awoodda jidhku u leeyahay in uu xinjiroobo dhiigga marka heerkulku hoos u dhaco (** triad dilaaga ah ee trauma**). Xataa maalinta khafiifka ah, kor u qaad bukaanka suufka dahaaran ama jilif/jaakadaha qallalan ee dhulka qabow oo gebi ahaanba ku duub buste kulaylka leh ama jaakadaha dhogorta leh.

Qalabka Ilaalinta Shaqsiyeed ee qasabka ah (PPE) iyo Qorshaha Dhimista ee 5-talaabo¶

Weligaa ha bilaabin chainsaw, xataa 2-daqiiqo jar jardiinada dambe ee daaradda, adoon xidhan dhammaan shanta qaybood ee qalabka ilaalinta kaynta ee shahaadaysan oo aad dejinayso jidkaaga baxsan:

Qof kasta oo isticmaala silsiladda silsilada ama nadiifiya alwaaxda duufaanka waa inuu hayaa ** xirmada xakamaynta dhaawaca dhiigbaxa (oo ka kooban laba dalxiis oo muraayadaha ganacsiga ah, faashad dhiig-baxa, iyo dhaymada cadaadiska)** si toos ah ugu goyday suunka ama jaakadda muuqaalka sare leh, oo aan looga tagin meel 200 mitir u jirta gaadhiga, oo qaado wax la taaban karo ** Jooji Dhiigbaxa iyo Koorsada Gargaarka Degdegga ah ee John, ama John Ambulance barnaamijka tababarka kaynta.

Su'aalaha soo noqnoqda¶

Waa maxay sababta silsiladdu si degdeg ah dib ugu soo laabato, maxayse tahay qayb ka mid ah baararka sababa?¶

Laad-wareejintu waxay dhacdaa marka silsiladda dhaqaaqa ee ku taal rubuc sare ee sanka hagaha (qaybta sare ee caarada wareegsan) ay taabato laan, loox labaad, ama dhinaca jeexan. Sababtoo ah ilkaha silsiladda ah ee caarada sare waxay u socdaan hoos iyo gadaal in ka badan 20 mitir ilbiriqsi kasta (45 mph), iliggu wuxuu qodaa xannibaadda wuxuuna u gudbiyaa dhammaan tamarta wareegga mashiinka si uu u garaaco bararka si xoog leh kor iyo gadaal madaxaaga iyo laabtaada 0.10 ilaa 0.15 ilbiriqsi. Sababtoo ah falcelinta bini'aadmigu waxay qaadataa ugu yaraan 0.20 ilbiriqsi si ay uga falceliso, waa inaad ku tiirsan tahay inaad suulka bidix ku duubto gacanta hore oo aad haysato bireega silsiladda inertia si aad u joojiso silsiladda.

Sidee bay cutubyada chainsaw dhab ahaantii u joojiyaan daab silsilad-wareegaya?¶

Chainsaw chaps uma shaqeeyaan sida hubka adag ee daab leexiya; Taa beddelkeeda, waxay ku shaqeeyaan iyagoo isku dhejinaya habka wadista silsiladda. Hoosta qolofka naylon ee bannaanka ee chaps chainsaw shahaado haysta waxay fadhiyaan lakabyo badan oo dheer, dabacsanaan ah oo Kevlar ah iyo xadhig polyester ballistic ah. Isla markiiba iligga silsiladda ah ee wareeggu wuxuu googooyaa dharka bannaanka, wuxuu ku dhuftaa kumanaan fiilooyinkan adag oo dib ugu soo celiyaa sanka sanka ee chainsaw iyo hoyga xajinta matoorka, xirmidda iyo qufulka sprocket-ka darawalka si adag wax ka yar toban meelood meel ilbiriqsi ka hor intaysan ilkuhu goyn lugtaada.

Waa maxay "cirka guga" ee nadiifinta duufaanka, maxayse khatar u tahay in la gooyo?¶

Tiirka gu'ga waa sapling nool ama laan dhumuc weyn leh oo la jeexjeexay oo la geliyey dabo adag oo ka hooseysa miisaanka geed weyn oo dhacay. Alwaaxda qaloocan waxa ay kaydisaa tamar laastikada ah sida katapult-ka Haddii aad dhigato silsiladda silsiladda qalooca ugu dheggan oo aad si toos ah u jarto, fiilooyinka alwaaxda ee kacsan ayaa si xoog leh ugu dhufanaya 60 ilaa 100 km/h (37 ilaa 62 mph), iyagoo ku jejebinaya wejigaaga, daanka, ama laabtaada ama ku garaacaya silsiladda ordaya ee jidhkaaga. Had iyo jeer si tartiib tartiib ah u sii daa xiisadda adigoo xiiraya kerfs xaglo-gacmeed oo gunta hoose ee foorarsiga ugu sarreeya adigoo ka taagan dariiqa lulid toosan.

Haddii qof lagu xidho jirrid geed oo culus oo dhacay hoostiisa, maxaa inoo diiday in aan isla markiiba geedka ka qaadno haddii uu saacad ku xanniban yahay?¶

Marka jir geed weyni uu burburiyo murqaha waaweyn ee lugaha ama miskaha in ka badan 15 daqiiqo, unugyada muruqa ee burburay way burburaan iyagoo gaajaysan qulqulka dhiigga, dhista heerarka dilaaga ah ee potassium, myoglobin, iyo lactic acid gudaha addimada xanniban. Haddii samatabbixiyeyaashu si lama filaan ah kor ugu qaadaan jirridda culus ka dib 30 ilaa 60 daqiiqadood iyada oo aan la diyaarin daaweyn, dhiiggu wuxuu dib ugu soo noqdaa lugaha la jajabiyey oo biyo raacinaya taas oo si toos ah ugu ururisay potassium si toos ah wadnaha, taas oo sababi karta wadnaha wadnaha oo dilaa ah daqiiqado gudahood (reperfusion crush syndrome), oo ay weheliso cadaadiska dhiigga ee degdega ah. Ilaa qofka laabta uusan neefsan karin, ka ilaali logu inuu rogrogo oo u oggolow dhakhaatiirta caafimaadka inay bilaabaan dareeraha xididka iyo dawooyinka ka hor inta aan miisaanka la qaadin.

Ilaha la hubiyay¶

• Maamulka Badbaadada Shaqada iyo Caafimaadka (OSHA, United States): * Heerarka Hawlgallada Diiwaangelinta (29 CFR 1910.266) iyo Si Badbaado leh oo loogu Shaqeeyo Xaashiyaha Xaqiiqda ee silsiladaha*
• Machadka Qaranka ee Badbaadada Shaqada iyo Caafimaadka (NIOSH / CDC, Mareykanka): Ka Hortagga Silsiladda Dhaawacyada Lagu Arkay Inta lagu jiro Geedka Saaridda Ka Dib Musiibo Dabiici ah
• Maamulka Caafimaadka iyo Badbaadada (HSE, Boqortooyada Ingiriiska): * Silsilada Shaqada (INDG317) iyo Tilmaamaha Badbaadada AFAG ee ku saabsan Dhirta Dhirta, Dabaysha, iyo Geedaha Laalaado*
• Adeegga Kaymaha Maraykanka (USFS): * Buug-gacmeedka Xeerka Caafimaadka iyo Badbaadada: Dabka Duur-joogta ah iyo Hawl-gallada Silsiladda Jabinta alwaaxa (Laadadka, Tiirarka Guga, iyo Kuraasta Timo-jaraha)*
• Kulliyada Dhakhaatiirta Maraykanka (ACS): Jooji Dhiiga: Xakamaynta Dhiigbaxa, Codsiga Dalxiiska, iyo Xirmooyinka Dhaawaca Isgoysyada

Tilmaamaha la xidhiidha¶

• Dhiigbax daran iyo codsi dalxiis
• Dhaawaca burburka iyo cilladda qaybta
• Dhaawaca cirbadeynta cadaadiska sare iyo dib u celinta qalabka korontada
• Nadiifinta duufaanka iyo duufaanka iyo soo kabashada
• Lafaha jabay, jabka, iyo murgacashada