Title:
A drive of construction machinery
Document Type and Number:
Japanese Patent JP6009210
Kind Code:
B2
Abstract:
A drive device for a construction machine is provided with a speed reducer which transmits a rotation of a motor to a driven unit at a reduced speed; and a brake mechanism which generates a braking force against the rotation to be transmitted from the speed reducer to the driven unit. The speed reducer includes a rotating shaft disposed in a casing, and a planetary gear type speed reducing unit disposed in the casing. The speed reducing unit includes a sun gear, a ring gear, a planetary gear which is meshed with the sun gear and the ring gear, and a spider member which supports the planetary gear so that the planetary gear is rotatable. The brake mechanism includes a rotating-shaft-side brake plate provided on an outer periphery of the spider member in a state that the rotating-shaft-side brake plate is integrally rotated with the spider member, a casing-side brake plate provided on the casing, and a brake piston which generates the braking force by bringing the rotating-shaft-side brake plate and the casing-side brake plate to press contact with each other.
Inventors:
Hamasaki Shoji
Koji Yamashita
Shoichi Seichi
Ryo Uchiyama
Koji Yamashita
Shoichi Seichi
Ryo Uchiyama
Application Number:
JP2012101064A
Publication Date:
October 19, 2016
Filing Date:
April 26, 2012
Export Citation:
Assignee:
Kobelco Construction Machinery Co., Ltd.
Shinko Machinery Co., Ltd.
Shinko Machinery Co., Ltd.
International Classes:
E02F9/12
Domestic Patent References:
| JP2007039990A | ||||
| JP2011021405A |
Foreign References:
| US20050288145 | ||||
| EP1234993A1 | ||||
| US6817963 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Muramatsu Toshiro
Masataka Otani
Muramatsu Toshiro
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