Title:
HYDRAULIC MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2016044552
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve maintenance work efficiency.SOLUTION: A hydraulic motor control device 100 for controlling a piston motor 1 in which a displacement volume is varied in accordance with a tilt angle of a swash plate 2 includes a volume changeover valve 30 for changing over the tilt angle of the swash plate 2. The volume changeover valve 30 includes a first spool 40 stored in a storage hole 61, a plug 48 closing the storage hole 61, a spring 42 energizing the first spool 40, a second spool 41 slidably inserted into a sliding hole 40d of the first spool 40, and a sealing plug 50 having a small diameter part 50d projecting into the storage hole 61. When the plug 48 is removed, the small diameter part 50d is abutted to a side wall 40i of an annular groove 40g of the first spool 40, and a state in which the second spool 41 is inserted into the sliding hole 40d of the first spool 40 is maintained.SELECTED DRAWING: Figure 2
Inventors:
SUZUKI ATSUSHI
SUZUKI KENJI
SUZUKI KENJI
Application Number:
JP2014166820A
Publication Date:
April 04, 2016
Filing Date:
August 19, 2014
Export Citation:
Assignee:
KYB CORP
International Classes:
F03C1/253; F16K11/07
Attorney, Agent or Firm:
Masaki Goto
Masaaki Iida
Atsushi Sudo
Hiroyuki Kanno
Masaaki Iida
Atsushi Sudo
Hiroyuki Kanno
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