Invention Grant
- Patent Title: Elevator apparatus
- Patent Title (中): 电梯设备
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Application No.: US11791850Application Date: 2006-02-01
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Publication No.: US07669697B2Publication Date: 2010-03-02
- Inventor: Takaharu Ueda , Masunori Shibata , Ken-Ichi Okamoto , Satoru Takahashi
- Applicant: Takaharu Ueda , Masunori Shibata , Ken-Ichi Okamoto , Satoru Takahashi
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2006/301649 WO 20060201
- International Announcement: WO2007/088599 WO 20070809
- Main IPC: B66B1/32
- IPC: B66B1/32 ; B66B1/34

Abstract:
In an elevator apparatus, a brake control device has a first brake control portion, a second brake control portion, and a third brake control portion. The first brake control portion operates a hoisting machine brake to stop a ascending/descending body as an emergency measure when an abnormality is detected. The second brake control portion reduces a braking force of the hoisting machine brake when a deceleration of the ascending/descending body becomes equal to or higher than a predetermined value during an emergency braking operation of the hoisting machine brake. The third brake control portion monitors a slip speed of a main rope with respect to a drive sheave during emergency braking operation of the hoisting machine brake, and reduces a braking force of the hoisting machine brake when the slip speed of the main rope becomes equal to or higher than a predetermined value.
Public/Granted literature
- US20090133964A1 Elevator Apparatus Public/Granted day:2009-05-28
Information query
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