Title:
WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/158760
Kind Code:
A1
Abstract:
This work vehicle is equipped with a parking brake device comprising: an end plate which is supported by a supporting member; a piston which is disposed further towards the wheel side than the end plate in an axial direction which is parallel to the rotary axis of a drive shaft and is movable in the axial direction; a hub which is disposed between the end plate and the piston in the axial direction and is connected to the drive shaft; a cylinder which is disposed further outward than the hub in the radial direction with respect to the rotary shaft; disks which are supported by the hub and are arranged in an interior space that is defined by the end plate, the piston, the hub, and the cylinder; separator plates which are supported by the cylinder, are arranged adjacent to the disks in the interior space, and can be moved axially by the piston; a first exhaust passage which connects the interior and exterior spaces; and second exhaust passages which connect the interior and exterior spaces and are provided further outward in the radial direction than the first exhaust passage. The first exhaust passage is provided between the piston and the hub, and the second exhaust passages are provided in the cylinder.
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Inventors:
NAITOU SHINICHI (JP)
ISHIZAKA TAKUYA (JP)
ISHIZAKA TAKUYA (JP)
Application Number:
PCT/JP2016/058333
Publication Date:
September 21, 2017
Filing Date:
March 16, 2016
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
F16D55/00; F16D65/00
Foreign References:
| JP2015068495A | 2015-04-13 | |||
| JPH06109046A | 1994-04-19 | |||
| JPH09240468A | 1997-09-16 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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