Kukiya, kuisa ma tag uye kudzora simba rine njodzi mu workshop

OSHA inorayira vashandi vekugadzirisa kuti vakiyire, vagadzire, uye vadzore masosi esimba ane njodzi. Vamwe vanhu havazivi kuti votora danho iri sei, muchina wega wega wakasiyana. Getty Images

Pakati pevanhu vanoshandisa chero rudzi rwemichina yeindasitiri,kuvharirwa kunze/kuburitswa kunze (LOTO)Hazvisi zvitsva. Kana magetsi asina kubviswa, hapana anoshinga kuita chero nzira yekugadzirisa nguva dzose kana kuedza kugadzirisa muchina kana sisitimu. Izvi zvinongodiwa nepfungwa dzakanaka uye neOccupational Safety and Health Administration (OSHA).

Usati waita mabasa ekugadzirisa kana kugadzirisa, zviri nyore kubvisa muchina kubva pamagetsi awo - kazhinji nekudzima circuit breaker - uye kukiya musuwo we circuit breaker panel. Kuwedzera label inoratidza mainjiniya ekugadzirisa nemazita inyaya iri nyore zvakare.

Kana magetsi asingakwanise kuvharwa, chirauro chete ndicho chinogona kushandiswa. Chero mamiriro ezvinhu, kungave nekiyi kana kuti isina, chirauro chinoratidza kuti kugadzirisa kuri kuitwa uye mudziyo hauna simba.

Zvisinei, uku hakusi kuguma kwerotari. Chinangwa chikuru hachisi chekungobvisa simba rinobuda. Chinangwa ndechekushandisa kana kuburitsa simba rese rine njodzi - maererano neOSHA, kudzora simba rine njodzi.

Saha rakajairika rinoratidza njodzi mbiri dzenguva pfupi. Kana saha radzimwa, banga resaha richaramba richimhanya kwemasekonzi mashoma, uye rinomira chete kana simba rakachengetwa mumota rapera. Bhara richaramba richipisa kwemaminitsi mashoma kusvika kupisa kwapera.

Kungofanana nekuchengetedza simba remagetsi nekupisa kwemasaha, basa rekushandisa michina yemaindasitiri (yemagetsi, yehydraulic neyomhepo) rinogona kuchengetedza simba kwenguva yakareba. Zvichienderana nekugona kwekusimbisa kwe hydraulic kana pneumatic system, kana capacitance yedunhu, simba rinogona kuchengetwa kwenguva yakareba zvinoshamisa.

Michina yakasiyana-siyana yeindasitiri inoda kushandisa simba rakawanda. Simbi yakajairika yeAISI 1010 inogona kutsungirira masimba ekukotama anosvika 45,000 PSI, saka michina yakaita semabhureki ekudzvanya, mabhonzo, mabhonzo, uye mapipe benders inofanira kutumira simba mumayuniti ematani. Kana dunhu rinopa simba hydraulic pombi system rakavharwa uye rabviswa, chikamu chehydraulic chesystem chingave chichikwanisa kupa 45,000 PSI. Pamichina inoshandisa maforoma kana mablades, izvi zvakakwana kupwanya kana kudimbura makumbo.

Rori remabhaketi rakavharwa rine bhaketi mudenga rine njodzi yakafanana nerori remabhaketi risina kuvharwa. Vhura vharuvhu isiriyo uye simba regiravhiti rinozotora nzvimbo. Saizvozvowo, system yepneumatic inogona kuchengetedza simba rakawanda kana yadzimwa. Pipe bender yepakati nepakati inogona kunwisa simba rinosvika 150 amperes. Nekuderera kwe0.040 amps, moyo unogona kumira kurova.

Kuburitsa kana kuderedza simba zvakachengeteka idanho guru mushure mekudzima simba neLOTO. Kuburitsa kana kushandisa simba rine njodzi zvakachengeteka kunoda kunzwisisa misimboti yesystem uye ruzivo rwemuchina unoda kuchengetedzwa kana kugadziriswa.

Kune mhando mbiri dzema hydraulic systems: open loop neclosed loop. Munzvimbo yemaindasitiri, mhando dzepombi dzakajairika igear, vanes, uye pistons. Silinda yechishandiso chinomhanya inogona kushanda kamwe chete kana kaviri. Hydraulic systems inogona kuva nechero yemhando nhatu dzema valvu - control directional, flow control, uye pressure control - imwe neimwe yemhando idzi ine mhando dzakasiyana. Pane zvinhu zvakawanda zvekuteerera, saka zvakakosha kunzwisisa zvakakwana mhando yega yega yezvikamu kuti ubvise njodzi dzine chekuita nesimba.

Jay Robinson, muridzi uye mutungamiriri weRbSA Industrial, akati: “Actuator ye hydraulic inogona kufambiswa nevharuvhu inovhara mapote ese.” “Vharuvhu ye solenoid inovhura vharuvhu. Kana sisitimu ichishanda, mvura ye hydraulic inoyerera ichienda kumidziyo ine pressure yakakwira uye ichienda kutangi ine pressure yakaderera,” akadaro. . “Kana sisitimu ikagadzira 2,000 PSI uye simba rikadzima, solenoid ichaenda panzvimbo yepakati yovhara mapote ese. Oiri haigone kuyerera uye muchina unomira, asi sisitimu inogona kuva ne 1,000 PSI kumativi ese evharuvhu.”