1. The ndoano used in the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The ndoano used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. Baada yandoanoimeondolewa kwenye mzigo wa ukaguzi, haipaswi kuwa na kasoro dhahiri au deformation, na kuongezeka kwa kiwango cha ufunguzi haipaswi kuzidi 0.25% ya saizi ya asili.
4. Kwandoanos that have passed the inspection, a mark should be printed in the low-stress area of the ndoano, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.
Thendoanoinapaswa kufutwa wakati moja ya hali zifuatazo zinatokea:
â ‘Ufa;
â‘¡ Mavazi ya sehemu hatari hufikia 10% ya saizi ya asili;
â ‘degree Shahada ya ufunguzi imeongezeka kwa 15% ikilinganishwa na saizi ya asili;
④The torsion deformation of the ndoano body exceeds 10°;
⑤The dangerous section of the ndoano or the neck of the ndoano is plastically deformed;
⑥The ndoano thread is corroded;
⑦When the wear of the ndoano bushing reaches 50% of the original size, the bushing should be replaced;
⑧ Wakati mandrel ya kipandendoanoimevaliwa kwa 5% ya saizi ya asili, mandrel inapaswa kubadilishwa.