Sgrùdadh sàbhailteachd agus ìre sgudail an dubhan

Sgrùdadh sàbhailteachd airdubhan
1. The dubhan used in the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The dubhan used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. Às deidh nadubhanair a thoirt air falbh bhon eallach sgrùdaidh, cha bu chòir uireasbhaidhean no deformachadh follaiseach a bhith ann, agus cha bu chòir an àrdachadh ann an ceum fosglaidh a bhith nas àirde na 0.25% den mheud tùsail.

4. Airsondubhans that have passed the inspection, a mark should be printed in the low-stress area of the dubhan, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.

Ìrean sgrìob airsondubhans
Tha andubhanbu chòir a dhubhadh às nuair a thachras aon de na suidheachaidhean a leanas:
â ‘Crack;
â‘¡ Tha caitheamh earrann cunnartach a ’ruighinn 10% den mheud tùsail;
â ‘¢ Tha an ceum fosglaidh air a mheudachadh 15% an coimeas ris a’ mheud tùsail;
④The torsion deformation of the dubhan body exceeds 10°;
⑤The dangerous section of the dubhan or the neck of the dubhan is plastically deformed;
⑥The dubhan thread is corroded;
⑦When the wear of the dubhan bushing reaches 50% of the original size, the bushing should be replaced;
⑧ Nuair a bhios mandrel a ’phìosdubhanair a chaitheamh gu 5% den mheud tùsail, bu chòir am mandrel a chur na àite.