Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CRAWLER TRAVELING VEHICLE
Document Type and Number:
Japanese Patent JP2007162908
Kind Code:
A
Abstract:

To provide a crawler traveling vehicle capable of equalizing tilting states of movable skew plates respectively disposed on right and left hydraulic pumps of HSTs in linear traveling.

A hydraulic pressure correction valve 20 is disposed not in a main circuit of a closed circuit of hydraulic pumps 13a, 13b of right and left HSTs 31, 32 and hydraulic motors 21a, 21b, but a part having a pressure lower than the main circuit, and supplying working hydraulic pressure generated by a charge pump 17 to servo cylinders 18a, 18b. As cylinder chambers 49a, 49b, and 50a, 50b at a side of working direction same as the servo cylinders 18a, 18b, are communicated with each other by the action of the hydraulic pressure correction valve 20 in linear traveling, linear traveling performance can be improved regardless of error and the like of an interlocking mechanism, and comparatively compact and inexpensive hydraulic pressure correcting valve 20 and its piping can be applied.


Inventors:
ARITA HIROYUKI
Application Number:
JP2005000363375
Publication Date:
June 28, 2007
Filing Date:
December 16, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI AGRICULT MACH
International Classes:
B62D49/00; F16H39/02; F16H61/40; F16H61/4069; F16H61/431; F16H61/448
Attorney, Agent or Firm:
近島 一夫