Title:
DUMP TRUCK
Document Type and Number:
Japanese Patent JP2019143666
Kind Code:
A
Abstract:
To provide a dump truck in which the clogging of a filter provided on a cooling circuit cooling a wet multiple disc brake can be suppressed.SOLUTION: A dump truck 1 comprises: a cooling circuit 41 cooling a wet multiple disc brake 34 by circulating cooling oil; a filter circuit 42 filtering the cooling oil; a first switching valve 51 and a second switching valve 52 switching the cooling circuit 41 and the filter circuit 42; and a controller 6 controlling operations of the first switching valve 51 and the second switching valve 52. The controller 6 includes a specific condition determination part 62 determining whether or not a specific condition is satisfied that a parking brake 35 is in an on-state, a shift lever 22 is in a neutral position, and a vehicle speed is zero, and a circuit changeover command part 63 commanding the first switching valve 51 and the second switching valve 52 to be switched to the filter circuit 42 from the cooling circuit 41 when the specific condition is satisfied.SELECTED DRAWING: Figure 7
Inventors:
WATAKA YUKI
NAKADE YOHEI
NAKADE YOHEI
Application Number:
JP2018026294A
Publication Date:
August 29, 2019
Filing Date:
February 16, 2018
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
F16D65/853; B60T5/00; B60T17/22; F15B21/045
Domestic Patent References:
| JPS5972160U | 1984-05-16 | |||
| JPS58113577U | 1983-08-03 | |||
| JPH068715A | 1994-01-18 | |||
| JPS597016U | 1984-01-18 | |||
| JPS5884015A | 1983-05-20 | |||
| JP2017074645A | 2017-04-20 | |||
| JPH059847U | 1993-02-09 |
Foreign References:
| US6030314A | 2000-02-29 | |||
| DE3340411A1 | 1985-05-23 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office