Title:
湿式ブレーキ装置
Document Type and Number:
Japanese Patent JP5341856
Kind Code:
B2
Abstract:
A plurality of rotating side brake disks (47) and a plurality of non-rotating side brake disks (48) are arranged outside in the radial direction from a motor shaft (25) in a brake case (32) while alternately overlapping with each other. A frictional material (48B) is provided on the non-rotating side brake disk (48), and an oil groove (48F) is provided in a frictional engaging surface (48E) of this frictional material (48B). It is configured such that, when a braking force is applied by a brake piston (49) to the motor shaft (25), lubricant oil (59) flowing into the brake case (32) from a lubricant oil inlet port (40) flows from the outer diameter side to the inner diameter side between the rotating side brake disk (47) and the non-rotating side brake disk (48) only through the oil groove (48F). As a result, the lubricant oil (59) having flowed into the brake case (32) efficiently cools the frictional engaging surface (48E).
Inventors:
Naoyuki Okuno
Yutaka Komaru
Takashi Niidome
Yutaka Komaru
Takashi Niidome
Application Number:
JP2010224791A
Publication Date:
November 13, 2013
Filing Date:
October 04, 2010
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
F16D65/853; B60T5/00; E02F9/12; F16D55/40; F16D59/02; H02K7/102
Domestic Patent References:
| JP200625580A | ||||
| JP2000283191A | ||||
| JP2006199144A | ||||
| JP2008190634A | ||||
| JP2002323072A |
Attorney, Agent or Firm:
Kazuhiko Hirose