Title:
HYDRAULIC DRIVE REDUCTION GEAR DEVICE
Document Type and Number:
Japanese Patent JP2016164423
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic drive reduction gear device with a structure having no risk of breakage of a reduction gear, which is caused by loosening of bolt fastening due to corotation of a washer even when a planetary gear is subjected to a load in the rotation axis direction and is rotated.SOLUTION: A washer 37 is installed on the end face of a second planetary gear 35 that is rotatably inserted on a rotation shaft part 36 integrated with a casing of a hydraulic drive reduction gear device, and the washer 37 is engaged with the rotation shaft part 36 by a snap ring 38. Further, as shown in Figure 3, a part of a cylindrical face of the rotation shaft part 36 is formed with a concave portion 40 having a circular arc shape in a cross section, which is radially formed and is oriented to the axial direction, and a part on the inner diameter side of the washer 37 is formed with a convex portion 41 having a circular arc shaped in a cross section, which is engaged with the concave portion 40.SELECTED DRAWING: Figure 1
Inventors:
YOKOTA TAKAYA
SUZUKI KENGO
SUZUKI KENGO
Application Number:
JP2015044502A
Publication Date:
September 08, 2016
Filing Date:
March 06, 2015
Export Citation:
Assignee:
NACHI FUJIKOSHI CORP
International Classes:
F16H1/28; F03C1/253; F03C1/26; F16H55/17
Domestic Patent References:
| JP2003343662A | 2003-12-03 | |||
| JPH0175646U | 1989-05-23 | |||
| JPH02230981A | 1990-09-13 |
Attorney, Agent or Firm:
Kosaku Umemoto
Akiko Okajima
Akiko Okajima
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