Lokacin da ake amfani da crane na gantry, na'urar kariya ce ta aminci wacce za ta iya hana yin lodi sosai. Ana kuma kiransa madaidaicin ƙarfin ɗagawa. Ayyukansa na aminci shine dakatar da aikin ɗagawa lokacin da nauyin ɗagawa na crane ya wuce ƙimar da aka ƙididdigewa, ta haka ne ke guje wa haɗarin haɗari. Ana amfani da masu iyaka da yawa a kan nau'in gada da masu hawa. Wasujib irin cranes(misali cranes na hasumiya, cranes na gantry) yi amfani da madaidaicin ma'aunin nauyi a haɗe tare da iyakancewar lokaci. Akwai nau'o'in ma'auni masu yawa da yawa, inji da lantarki.
(1) Nau'in Injini: Mai buga wasan yana gudana ne ta hanyar levers, maɓuɓɓugan ruwa, cams, da dai sauransu, idan an yi lodi fiye da kima, ɗan wasan yana mu'amala da na'urar da ke sarrafa aikin ɗagawa, yana yanke tushen wutar lantarki na injin dagawa, da sarrafa mashin ɗin. hanyar ɗagawa don dakatar da gudu.
(2) Nau'in Lantarki: Ya ƙunshi na'urori masu auna firikwensin, amplifiers masu aiki, masu sarrafa iko da alamun kaya. Yana haɗa ayyukan aminci kamar nuni, sarrafawa da ƙararrawa. Lokacin da crane ya ɗaga kaya, na'urar firikwensin da ke kan abin da ke ɗauke da kaya ya lalace, ya canza nauyin lodin zuwa siginar lantarki, sannan ya ƙara girmansa don nuna ƙimar nauyin. Lokacin da nauyin ya wuce nauyin da aka ƙididdigewa, an yanke tushen wutar lantarki na injin ɗagawa, ta yadda ba za a iya gane aikin ɗagawa na injin ɗagawa ba.
Thegantry craneyana amfani da lokacin ɗagawa don siffanta yanayin kaya. Ƙimar lokacin ɗagawa yana ƙayyade ta samfurin nauyin ɗagawa da girma. Ƙimar girman girman yana ƙayyade ta samfurin tsayin hannu na ƙuruciyar crane da cosine na kusurwar karkata. Ko crane da aka yi overload an zahiri iyakance ta dagawa iya aiki, albarku tsawon da albarku karkata kwana. A lokaci guda kuma, dole ne a yi la'akari da sigogi da yawa kamar yanayin aiki, wanda ke sa sarrafawa ya fi rikitarwa.
A halin yanzu yadu amfani microcomputer sarrafa karfin juyi iyaka iya hade daban-daban yanayi da kuma warware wannan matsala mafi alhẽri. Ƙarfin wutar lantarki ya ƙunshi na'urar gano kaya, mai gano tsayin hannu, mai gano kusurwa, mai zaɓin yanayin aiki da microcomputer. Lokacin da crane ya shiga yanayin aiki, alamun gano kowane siga na ainihin yanayin aiki ana shigar da su cikin kwamfutar. Bayan ƙididdigewa, haɓakawa da sarrafawa, ana kwatanta su da ƙimar lokacin ɗagawa da aka riga aka adana, kuma ana nuna ainihin ƙimar daidai akan nunin. . Lokacin da ainihin ƙimar ta kai kashi 90% na ƙimar ƙima, zata aika da siginar faɗakarwa da wuri. Lokacin da ainihin ƙimar ta zarce nauyin da aka ƙididdige, za a ba da siginar ƙararrawa, kuma crane zai daina aiki a hanya mai haɗari (ɗagawa, ƙaddamar da hannu, rage hannu, da juyawa).
