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下載手機APP角(jiao)翠(cui)決(jue)方(fang)法(fa)針(zhen)對(dui)這(zhe)一(yi)問(wen)題(ti)，我(wo)們(men)研(yan)製(zhi)開(kai)發(fa)了(le)超(chao)聲(sheng)波(bo)測(ce)距(ju)行(xing)程(cheng)限(xian)位(wei)開(kai)關(guan)。它(ta)可(ke)以(yi)根(gen)據(ju)需(xu)要(yao)隨(sui)意(yi)調(tiao)定(ding)限(xian)位(wei)距(ju)離(li)。利(li)用(yong)超(chao)聲(sheng)波(bo)由(you)發(fa)射(she)到(dao)接(jie)收(shou)所(suo)形(xing)成(cheng)的(de)時(shi)間(jian)差(cha)測(ce)定(ding)起(qi)重(zhong)機(ji)與(yu)其(qi)止(zhi)擋(dang)或(huo)兩(liang)起(qi)重(zhong)機(ji)之(zhi)間(jian)的(de)距(ju)離(li)，從(cong)而(er)實(shi)現(xian)對(dui)起(qi)重(zhong)機(ji)位(wei)置(zhi)的(de)控(kong)製(zhi)。主(zhu)電(dian)路(lu)板(ban)用(yong)於(yu)對(dui)超(chao)聲(sheng)波(bo)發(fa)出(chu)及(ji)接(jie)收(shou)信(xin)號(hao)的(de)處(chu)理(li)，在(zai)主(zhu)電(dian)路(lu)板(ban)上(shang)還(hai)可(ke)以(yi)實(shi)現(xian)對(dui)限(xian)位(wei)距(ju)離(li)的(de)設(she)定(ding)和(he)調(tiao)整(zheng)；轉換板用於將弱電信號轉換成超聲彼盆聲。
起因及危害門橋式起重機上安裝的限位開關主要用於對起重機大、xiaocheweizhijinxingxianzhi，yifangzhiqizhongjidachehuoxiaochechongzhuangguidaoduanbuzhidang，fangzhitongguidaomenqiaoshiqizhongjizhuangche。xiaochexianweikaiguanyibanshezaixiaocheguidaodeliangduan。dachexianweikaiguanzhuangzaiqiaoshiqizhongjiduanliang（或門式起重機走行梁）的de兩liang端duan。目mu前qian起qi重zhong機ji限xian位wei開kai關guan也ye都dou選xuan用yong的de是shi帶dai機ji械xie觸chu點dian的de行xing程cheng開kai關guan。通tong過guo撞zhuang杆gan壓ya住zhu行xing程cheng開kai關guan滾gun輪lun實shi現xian限xian位wei。但dan由you於yu在zai安an裝zhuang或huo維wei修xiu過guo程cheng中zhong。經jing常chang出chu現xian因yin限xian位wei開kai關guan或huo撞zhuang尺chi安an裝zhuang不bu合he理li等deng原yuan因yin造zao成cheng撞zhuang尺chi壓ya不bu住zhu限xian位wei開kai關guan滾gun輪lun或huo撞zhuang尺chi將jiang限xian位wei開kai關guan撞zhuang壞huai等deng現xian象xiang，這zhe種zhong現xian象xiang在zai門men橋qiao式shi起qi重zhong機ji（尤其是門式起重機）的大車*為常見。為了方便使用，許多單位都將大車限位開關短接或拆除，造成大車因撞壞端部止擋而脫軌或同軌道起重機撞車等事故。
