Title:
READY-MIXED CONCRETE MANUFACTURING APPARATUS OR TRANSPORTING APPARATUS AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2017/169296
Kind Code:
A1
Abstract:
Provided is a manufacturing apparatus or a transporting apparatus capable of satisfactorily manufacturing ready-mixed concrete.
A concrete mixer truck (1) includes a mixing drum (20), a hydraulic motor (40), a hydraulic pump (50), an engine (60), a pressure sensor (70), and a control device (80). The hydraulic motor (40) is a two-speed type and rotates the mixing drum (20). The pressure sensor (70) detects a driving pressure of the hydraulic motor (40). When the pressure sensor (70) detects a pressure value less than or equal to a first pressure value, the control device (80) performs a first rotation step of driving the engine (60) at a first rotational speed while putting the hydraulic motor (40) into a second speed to rotate the mixing drum. In addition, when the pressure sensor (70) detects a pressure value greater than the first pressure value, the control device (80) performs a second rotation step of driving the engine (60) at a second rotational speed higher than the first rotational speed while putting the hydraulic motor (40) into a first speed to rotate the mixing drum.
Inventors:
TANAKA KAZUNORI (JP)
KAWASHIMA SHIGERU (JP)
SHIMIZU HIROYUKI (JP)
KAWASHIMA SHIGERU (JP)
SHIMIZU HIROYUKI (JP)
Application Number:
PCT/JP2017/006291
Publication Date:
October 05, 2017
Filing Date:
February 21, 2017
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
B28C5/42; B28C7/02; B60P3/16
Domestic Patent References:
| WO2015160610A1 | 2015-10-22 |
Foreign References:
| JP2003220884A | 2003-08-05 | |||
| JPH0666709A | 1994-03-11 |
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (JP)
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