Title:
渦電流式減速装置
Document Type and Number:
Japanese Patent JP6737345
Kind Code:
B2
Abstract:
A retarder includes a rotor (1), a plurality of fins (8), a plurality of permanent magnets (3), a switching mechanism, a first cover (21), a second cover (22), and a cover-switching mechanism. The fins (8) are provided on an outer peripheral surface (1a) of the rotor (1) and inclined with respect to a rotation direction of the rotor (1). The magnets (3) are arranged inside the rotor (1). The switching mechanism switches between a braking state and a non-braking state. The first cover (21) faces an end face (1c) of the rotor (1) and includes a plurality of holes (21a). The second cover (22) protrudes from an outer circumferential edge of the first cover (21) toward a rotor (1) side. The cover-switching mechanism opens the holes (21a) in the braking state and closes the holes (21a) in the non-braking state. The first cover (21) is disposed on a side on which a leading end portion (8a) of each fin (8) is present. The retarder achieves suppressing windage and ensuring a heat dissipation performance.
Inventors:
Hiroshi Nogami
Kenji Imanishi
Yasutaka Noguchi
Hiroyuki Yamaguchi
Shotaro Narakawa
Takuya Fujita
Kenji Imanishi
Yasutaka Noguchi
Hiroyuki Yamaguchi
Shotaro Narakawa
Takuya Fujita
Application Number:
JP2018557552A
Publication Date:
August 05, 2020
Filing Date:
October 03, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
H02K49/10; H02K49/02
Domestic Patent References:
| JP580180U | ||||
| JP2001320870A |
Attorney, Agent or Firm:
Ascend Patent Business Corporation