Tirohanga Whānui o te T76 Full Throated Steel Self Drilling Rock Bolt
He momo punga tokotoko motuhake ngā punga keri-ā-ringa. Ko te punga keri-ā-ringa he mea hanga ki te mata wiri patunga tapu, te pae rino tuwhera o te diameter o waho me roto e tika ana, me ngā nati hononga. He mea hanga te tinana punga ki te ngongo rino tuwhera me te miro porowhita o waho. Kei te pito kotahi te mata wiri patunga tapu o te ngongo rino, me te nati e rite ana me te pereti pito rino. Ka whakamahia ngā punga keri-ā-ringa kia rite ki te pae rino tuwhera (tokotoko) he mata wiri patunga tapu e rite ana ki tōna tihi, kaua ki te mata wiri tawhito.
Whakatakotoranga o ngā Rakau Punga Keri-ā-Whaiaro
| R25N | R32L | R32N | R32/18.5 | R32S | R32SS | R38N | R38/19 | R51L | R51N | T76N | T76S | |
| Diameter o waho (mm) | 25 | 32 | 32 | 32 | 32 | 32 | 38 | 38 | 51 | 51 | 76 | 76 |
| Diameter ā-roto(mm) | 14 | 22 | 21 | 18.5 | 17 | 15.5 | 21 | 19 | 36 | 33 | 52 | 45 |
| Diameter o waho, whai hua (mm) | 22.5 | 29.1 | 29.1 | 29.1 | 29.1 | 29.1 | 35.7 | 35.7 | 47.8 | 47.8 | 71 | 71 |
| Te kaha kawenga mutunga (kN) | 200 | 260 | 280 | 280 | 360 | 405 | 500 | 500 | 550 | 800 | 1600 | 1900 |
| Te kaha kawenga hua (kN) | 150 | 200 | 230 | 230 | 280 | 350 | 400 | 400 | 450 | 630 | 1200 | 1500 |
| Kaha kume, Rm(N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
| Te kaha whakaputa, Rp0, 2(N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Taumaha (kg/m) | 2.3 | 2.8 | 2.9 | 3.4 | 3.4 | 3.6 | 4.8 | 5.5 | 6.0 | 7.6 | 16.5 | 19.0 |
Te painga me te whakamahinga o ngā Rakau Punga Whakapūnga Whaiaro
Ko te mahi a te tokotoko punga porowhita whakapūmau tuwhera ko te whakapūmau, nō reira ka kiia hoki he paipa whakapūmau. Ka taea te huri i roto i te whakamahere whānui kia tutuki ai te pēhanga tuatahi. I raro i te pēhanga, ka rere te paru o roto, kāore i te mea he pānga pumau ki a ia anō, engari ka uru atu hoki ki te kōhao punga ina puea te paru, ka whai wāhi ki te whakaū i te toka e karapoti ana. He painga anō ōna i roto i te tono me te whakamahere, nō reira ka taea e ia te whakaatu i ōna ake painga i roto i te tono:
1, I raro tonu i tēnei pānga ka taea te whakatutuki i te pānga tautoko tere tuatahi, ā, ka taea hoki te whakahaere pai i te rerekētanga o te toka e karapoti ana, kia taea ai te whakatutuki i te pānga pumau pai.
2、 Ka whakamahia he huarahi takoto kau i roto i te whakamahere, ka whakauruhia ngā tokotoko punga me ngā paipa whakapūtā. Koinei tonu te momo whakamahere he nui ngā painga. Mena he paipa whakapūtā tuku iho, ka raru pea i te kukume whakamuri, ā, kāore e puta he āhuatanga pēnei.
3, Ka taea e ia te whakapai ake i te kounga o te kaupapa, nā te mea ka taea e ia te whakatutuki i te nui o te kī i te wā e whakakī ana, ā, i te taha o te whakakī, ka taea e ia te whakatutuki i te pānga o te whakakī pēhanga.
4. He pai tōna āhua koretake. Mā te tāpiri i ētahi atu taputapu i te wā e whakamahia ana, ka whakanuia tōna āhua koretake, ka taea ai e te paru te takai i te tokotoko punga tuwhera katoa. Nā tēnei ka kore e puta te waikura i te wā e whakamahia ana, ā, ka taea te whakamahi mō te wā roa.
5, He tino watea hoki ki te taputapu, he mea tino nui hoki. Mēnā he watea ki te taputapu, ka taea te whakapoto i te wā patuiro me te wā hanga. I te taha o te taputapu, kāore e hiahiatia he tīwiri anō hei whakatutuki i ngā whakaritenga o te nati me te papa o te taputapu.
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