Kudhirowa kwedombo kwakabatwa nemaoko kwakaunzwa naIngersoll-RandCo.muna 1912. Maererano nechimiro chesimba, chakakamurwa kuva mapoka mana: pneumatic, hydraulic, magetsi uye mukati memoto unopisa.Pneumatics ndiyo inonyanya kushandiswa.Zviboorero zvematombo zvakabatwa nemaoko zvakakodzerwa nekuchera pasi kana kurerekera kubhomba, hombe dzechipiri dzinopwanya blastholes, mabhoti maburi (shallow vertical holes), uye yakagadziriswa pulley makomba (shallow horizontal holes) mune yepakati-yakaoma uye pamusoro-yepakati-yakaoma ore.Chibooreso chine dhayamita 19 ~ 42mm, uye kudzika kwegomba kwepamusoro i5m, kazhinji isingasviki 2.5m.Zviboorero zvematombo zvinogaro shandiswa nepneumatic zvine simba re15～45J, frequency ye27～36Hz, torque ye8～13N·m, kushanda nesimba kwe0.5～0.7MPa, kushandiswa kwemhepo kwe1500～ 3900L/min, uye huremu hwe7–30kg.
Nguva yekutumira: Mar-31-2021
