- 专利标题： EXPLOSIVE MATERIAL CHARGING DEVICE FOR CHARGING A BOREHOLE METHOD OF POSITIONING AN EXPLOSIVE MATERIAL CHARGING DEVICE EXPLOSIVE MATERIAL CHARGING VEHICLE AND DATA MEDIUM
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申请号： US18250133申请日： 2021-10-20
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公开(公告)号： US20230392913A1公开(公告)日： 2023-12-07
- 发明人: Nikolaos PETROPOULOS
- 申请人： LUOSSAVAARA KIIRUNAVAARA AB
- 申请人地址： SE LULEÅ
- 专利权人： LUOSSAVAARA KIIRUNAVAARA AB
- 当前专利权人： LUOSSAVAARA KIIRUNAVAARA AB
- 当前专利权人地址： SE LULEÅ
- 优先权： SE 512349 2020.10.22
- 国际申请： PCT/SE2021/051042 2021.10.20
- 进入国家日期： 2023-04-21
- 主分类号： F42D1/10
- IPC分类号： F42D1/10 ; F42D1/22 ; F42B3/087
摘要：
The present invention concerns an explosive material charging device (1) and a method of positioning the explosive material charging device (1) in a borehole (3). The explosive material charging device (1) comprises a top anchor unit (5) and a bottom anchor unit (7) each configured to engage the borehole wall (8), an expandable tube member (11) arranged between the top anchor unit (5) and the bottom anchor unit (7) and configured to be charged with explosive material (40), the bottom anchor unit (7) comprises a backflow prevention valve device (13) configured to prevent the explosive material (40) to flow out from the expandable tube member (11), wherein the backflow prevention valve device (13) is openable for permitting a charging hose (15) to enter the expandable tube member (11) for reaching the interior of the top anchor unit (5),
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