Uqhagamshelo lwebholithi yamandla aphezulu luqiniswa intonga yebholiti yoqhagamshelo ngaphakathi kwipleyiti yoqhagamshelo yokugoqa iqhekeza, ngokwaneleyo ukuvelisa ukukhuhlana okuninzi, ukuze kuphuculwe ingqibelelo nokuqina koqhagamshelwano, xa ukucheba, ngokuhambelana neemfuno uyilo kunye noxinzelelo lwahlukile, lunokwahlulwa lube luhlobo lwe-friction ephezulu yoqhagamshelo lwebholithi yamandla aphezulu kunye nebholiti enamandla amakhulu edibanisa uhlobo olubini loxinzelelo, ngumahluko obalulekileyo phakathi kobume bemida emibini yahlukile, nangona luhlobo olufanayo lwebholithi, kodwa ukubala indlela, iimfuno, umda wesicelo wahluke kakhulu.Kuyilo lokucheba, uqhagamshelo lwebholithi yokuqina ephezulu lubhekisa kumandla okhuhlana aphezulu anokunikezelwa ngamandla okuqinisa ibholithi phakathi kwamandla okucheba angaphandle kunye nomphezulu woqhagamshelwano wepleyiti njengomda. urhulumente, oko kukuthi, ukuqinisekisa ukuba amandla angaphakathi nangaphandle okucheba odibaniso awadluli kumandla okrwada aphakamileyo ngexesha lonke lenkonzo.Akusayi kubakho deformation yepleyiti etyibilikayo (isithuba sokuqala phakathi kwesikrufu kunye nomngxuma. Udonga luhlala lugciniwe) Kuyilo lokucheba, uhlobo loxinzelelo oluphezulu lwebholiti yoqhagamshelo luvumelekile kumandla ocheba angaphandle adlula amandla amakhulu okukhuhlana, ukutyibilika kwesalamane phakathi kweplate edityanisiweyo yokuguqulwa, de udibaniso lwebholiti kunye nodonga lomngxuma, emva koko uqhagamshelo luqhubeke. Ukucheba kweshaft yebholiti kunye noxinzelelo kudonga lomngxuma kunye nokungquzulana phakathi kwephaneli yomphezulu woqhagamshelwano amandla adityanisiweyo, ekugqibeleni ukuya kwi-shaft shear okanye uxinzelelo kumonakalo wodonga lomngxuma njengoko nokwamkela isimo somda wokucheba. iibholiti ezithwele udidi oluphezulu luhlobo olunye lwebholithi, kodwa uyilo lulo
Ukutyibilika akuqwalaselwa nezitshixo nazo zicheba ngamandla. Umonakalo wokugqibela ulingana nalowo weebholiti eziqhelekileyo (i-bolt shear okanye i-steel plate crushing). Ngokwembono yokusetyenziswa:
Ukudityaniswa kwebholiti yelungu eliphambili lesakhiwo sesakhiwo ngokuqhelekileyo zenziwe nge-bolt-high-strength bolt.Iibholiti eziqhelekileyo zingaphinda zisetyenziswe, iibholiti zamandla aphezulu azikwazi ukuphinda zisetyenziswe.Iibholiti zamandla aphezulu zisetyenziselwa ukuxhamla ngokusisigxina.
Iibholiti zamandla aphezulu ziyi-bolts ezigxininisiweyo, uhlobo lwe-friction kunye ne-torque wrench ukusebenzisa i-prestress emiselweyo, uhlobo loxinzelelo lwe-screw kwintloko ye-plum.Iibholiti eziqhelekileyo zinentsebenzo ephantsi ye-shear kwaye zinokusetyenziswa kwiindawo zesibini zesakhiwo.Iibholiti eziqhelekileyo kufuneka ziqiniswe kuphela.
Iibholiti eziqhelekileyo ziyiklasi 4.4, iklasi 4.8, iklasi 5.6 kunye neklasi 8.8.Iibholiti zamandla aphezulu ngokubanzi ziyi-8.8 kunye ne-10.9, apho i-10.9 ininzi.
I-8.8 ikwibakala elifanayo no-8.8S. Iipropati zoomatshini kunye neendlela zokubala zebholithi eqhelekileyo kunye nebholithi yokuqina zihlukile. Uxinzelelo lwebholithi yamandla aphezulu kuqala ngokusetyenziswa kwe-pretension P ngaphakathi kwayo, kwaye emva koko ukuxhathisa ingxabano phakathi komphezulu woqhagamshelwano wesiqwenga sokudibanisa ukuthwala umthwalo wangaphandle, kunye nebholithi eqhelekileyo ithwala ngokuthe ngqo umthwalo wangaphandle.
Uqhagamshelo lwebholithi yamandla aphezulu lunenzuzo yolwakhiwo olulula, ukusebenza kakuhle komatshini, ukushenxiswa, ukumelana nokudinwa, naphantsi kwesenzo somthwalo oguquguqukayo, eyona ndlela ithembisa kakhulu yokudibanisa.
Ibholiti yamandla aphezulu kukusebenzisa i-wrench ekhethekileyo yokuqinisa i-nut, ukwenzela ukuba ibholithi ivelise i-pretension enkulu kunye nelawulwayo, ngokusebenzisa i-nut kunye nepleyiti, ukuba idibaniswe ngumlinganiselo ofanayo we-prepressure.Ngaphantsi kwesenzo soxinzelelo lwangaphambili. , amandla amakhulu okukhuhlaza aya kuveliswa ecaleni komphezulu weqhekeza elidityanisiweyo. Ngokucacileyo, ukuba nje amandla e-axial angaphantsi kolu xinzelelo lwamandla, ilungu aliyi kutyibilika kwaye unxibelelwano aluyi konakaliswa. Lo ngumgaqo-siseko woxhumo oluphezulu lwebholithi.
Uqhagamshelo lwebholithi yamandla aphezulu luxhomekeke kumandla okruthakruthwana phakathi kweendawo zokuqhagamshelana zamalungu okudibanisa ukuthintela ukutyibilika okulinganayo. Ukuze ube namandla okwaneleyo okudibanisa kwiindawo zoqhagamshelwano, kuyimfuneko ukwandisa amandla okubamba kunye ne-friction coefficient yeendawo zoqhagamshelwano zamalungu. zenziwe ngentsimbi ephezulu, yingakho zibizwa ngokuba yi-high-strength bolt connections.
Kumdibaniso we-bolt wamandla aphezulu, i-coefficient ye-friction inempembelelo enkulu kwi-bearing capacity.Uvavanyo lubonisa ukuba i-coefficient ye-friction ichaphazeleka kakhulu yindlela yokudibanisa kunye nezinto eziphathekayo. , iindlela ezifana nokuqhunyiswa kwesanti kunye nokucoca ibrashi yocingo zihlala zisetyenziselwa ulwakhiwo ukunyanga umphezulu woqhagamshelwano wamacandelo ngaphakathi koluhlu lokudibanisa.
Ixesha lokuposa: Jun-08-2019