Title:
EXHAUST PIPE CONNECTING INSTRUMENT FOR CONCRETE PUMP VEHICLE AND METHOD FOR SUCTION PRESSURE SENDING OF EXTERNAL FLUID USING CONCRETE PUMP VEHICLE
Document Type and Number:
Japanese Patent JP2022189038
Kind Code:
A
Abstract:
To avoid obstruction of fluidity of ready-mixed concrete even when using a normal concrete pump by needing only connecting an exhaust pipe to a suction end part of a pump tube so as to be changeable via a connecting pipe body of an auxiliary connecting instrument after moving a hopper to a retreat position when using the concrete pump to the suction and exhaustion of an external fluid, and thereby eliminating the need of special remodeling such as sealing of the hopper.SOLUTION: A concrete pump vehicle V comprises an auxiliary connecting instrument A which is used when a concrete pump CP is used as to a suction pump for sucking external fluid into a tube T from a transfer pipe 20 by reverse rotation of a roller support body RS. The auxiliary connecting instrument A includes a connecting pipe body Aw which is connectable to a suction end Ti of the tube T at one end and to which an upstream-side end of an exhaust pipe 80 is connectable at the other end part when the hopper H is in a retreat position HB.SELECTED DRAWING: Figure 6
Inventors:
YAMANAKA SHOJI
TAKAHASHI KOICHI
TAKAHASHI KOICHI
Application Number:
JP2021097373A
Publication Date:
December 22, 2022
Filing Date:
June 10, 2021
Export Citation:
Assignee:
KYOKUTO KAIHATSU KOGYO CO
International Classes:
F04C5/00; B60P3/16
Attorney, Agent or Firm:
Ochiai Patent Office