1. The matau used in the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The matau used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. Whai muri i temataukua tangohia mai i te kawenga tirotiro, kia kaua e kitea nga koha, te rerekee ranei, a ko te pikinga o te tohu whakatuwhera kaua e neke ake i te 0.25% o te rahinga taketake.
4. Mo temataus that have passed the inspection, a mark should be printed in the low-stress area of the matau, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.
Paerewa pakaru momataus
Ko temataume whakakore atu i te wa e puta ana tetahi o nga ahuatanga e whai ake nei:
â ‘Ngatata;
â‘¡ Ko nga waahanga kakahu ka tae ki te 10% o te rahi taketake;
â ‘¢ Kua whakapikihia te tohu whakatuwhera 15% kua whakaritea ki te rahinga taketake;
④The torsion deformation of the matau body exceeds 10°;
⑤The dangerous section of the matau or the neck of the matau is plastically deformed;
⑥The matau thread is corroded;
⑦When the wear of the matau bushing reaches 50% of the original size, the bushing should be replaced;
⑧ A, no te mandrel o te waahangamataukua mau ki te 5% o te rahi taketake, me whakakapi te mandrel.