Title:
WORK VEHICLE
Document Type and Number:
Japanese Patent JP2017179974
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a work vehicle capable of operation with lowered electric power consumption and/or operation with enhanced suction performance by controlling a rotating speed of a vacuum pump in response to the differential pressure between a set pressure and a pressure detected by an in-tank pressure detection unit.SOLUTION: A work vehicle 1 according to the present invention comprises a tank 10 mounted on a vehicle, a vacuum pump 21 for reducing an internal pressure of the tank 10, driving means 22 for driving the vacuum pump 21, and control means 30 for controlling driving means 23 in response to a preset set pressure and the internal pressure of the tank 10. The control means 30 comprises a storage unit 31 for storing the set pressure, an in-tank pressure detection unit 33 for detecting the internal pressure of the tank 10, and a rotating speed control unit 34 for controlling a rotating speed of the driving means 22. The rotating speed control unit 34 increases a rotating speed more when the differential pressure between the set pressure and a detection pressure detected by the in-tank pressure detection unit 33 is large than when the differential pressure is small.SELECTED DRAWING: Figure 1
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Inventors:
SEKI SHUJI
TSUKADA SHINYA
ONISHI RYOHEI
YAMADA DAIJI
NISHIMOTO SATOSHI
TSUKADA SHINYA
ONISHI RYOHEI
YAMADA DAIJI
NISHIMOTO SATOSHI
Application Number:
JP2016070974A
Publication Date:
October 05, 2017
Filing Date:
March 31, 2016
Export Citation:
Assignee:
MORITA HOLDINGS CORP
International Classes:
E03F7/10; B60P3/00; C02F11/00
Domestic Patent References:
| JP2011252353A | 2011-12-15 | |||
| JP2010037807A | 2010-02-18 | |||
| JP2010084427A | 2010-04-15 | |||
| JP2004068637A | 2004-03-04 | |||
| JP2007050996A | 2007-03-01 | |||
| JPS58171386A | 1983-10-08 | |||
| JPS58186186U | 1983-12-10 | |||
| JPS611983A | 1986-01-07 | |||
| JPH07189333A | 1995-07-28 | |||
| JPS62291341A | 1987-12-18 |
Foreign References:
| US6224353B1 | 2001-05-01 |
Attorney, Agent or Firm:
Shinichi Abe
Yoshihiro Shimizu
Yuji Tsujida
Takaaki Ota
Yoshihiro Shimizu
Yuji Tsujida
Takaaki Ota