发明名称 |
ELEKTRISK VINSJ ELLER HEISAPPARAT |
摘要 |
An electric hoist (1) comprising an electric motor (4) and a sheave (11) driven by the electric motor via a reduction gear (14). The reduction gear comprises a pair of helical gears (16,17) meshing with each other. One (16) of the helical gears is axially movably arranged on a shaft (20) and is moved in the axial direction thereof when there is a load on the load chain (12) supported by the sheave (11), and when the axial movement of the movable helical gear (16) is detected by a sensor (MS), the speed of rotation of the electric motor (4) is automatically changed from a higher speed to a lower speed. <IMAGE> |
申请公布号 |
NO921539(A) |
申请公布日期 |
1992.10.23 |
申请号 |
NO19920001539 |
申请日期 |
1992.04.21 |
申请人 |
KITO, KABUSHIKI KAISHA |
发明人 |
SASAKI, MASATOSHI;MOCHIZUKI, MASAHIKO |
分类号 |
B66D1/40;B66B1/24;B66D1/58;B66D3/22;(IPC1-7):B66C13/22 |
主分类号 |
B66D1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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