| 发明名称 |
ROLLER CUTTER WITH IMPROVED SEALING |
| 摘要 |
A roller cutter intended to be used at a drill head for rotary boring of the front of earth and rock formations, the roller cutter having a centre line and being provided with a hub having rows of crushing members. At least one crushing member has its longitudinal axis at an angle relative to a normal to the centre line. The hub is rotatable in relation to a shaft having shaft spigots. The roller cutter is provided with at least one seal retainer arranged at an axial end of the hub in order to hold a sealing means in position. The hub includes at least one circumferential recess positioned axially inward relative to a radially inward projecting flange in the hub. |
| 申请公布号 |
US2016040482(A1) |
申请公布日期 |
2016.02.11 |
| 申请号 |
US201414778630 |
申请日期 |
2014.03.07 |
| 申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
LOIKKANEN Joona;BROLUND Stig-Ake |
| 分类号 |
E21B10/25 |
主分类号 |
E21B10/25 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A roller cutter intended to be used at a drill head for rotary boring of the front of earth and rock formations, said roller cutter comprising:
a centre line and a hub provided with rows of crushing members, at least one crushing member having a longitudinal axis at an angle relative to a normal to the centre line, said hub being rotatable in relation to a shaft having shaft spigots; and at least one seal retainer arranged at an axial end of the hub to hold a sealing means in position, wherein the hub includes at least one circumferential recess positioned axially inward relative to a radially inward projecting flange in the hub. |
| 地址 |
Sandviken SE |
