Title:
作業台車
Document Type and Number:
Japanese Patent JP7235326
Kind Code:
B2
Abstract:
To provide a work truck that enables selective installation of devices suitable for several different operations inside an existing pipeline when performing these operations inside the existing pipeline.SOLUTION: A work truck A for working inside a pipeline B connected to a manhole comprises: two traveling members 10 and 20 that are provided with a plurality of rollers 10a and 20a; a bow-shaped frame 30 that is provided with shaft parts 30a and 30b formed at both ends in a longitudinal direction and a base part 30c formed at a position eccentric from an axial center of the shaft parts, and is rotatably supported by the two traveling members via the shaft parts, in which the base part is provided with a mounting seat 33a on which a work device is mounted for performing preset work on the pipeline and an elevating member 32 for elevating and lowering the mounting seat; a drive motor 11 that is disposed on one of the traveling members 10 and rotates the bow-shaped frame; and outriggers 13 and 23 that are disposed on the two traveling members and come into contact with an inner peripheral surface of the pipeline to make the traveling members inoperable, or release the contact with the inner peripheral surface of the pipeline to allow the traveling members to travel.SELECTED DRAWING: Figure 1
Inventors:
Kazuhiko Sanada
Zhang
Fujimori Hideo
Zhang
Fujimori Hideo
Application Number:
JP2020062670A
Publication Date:
March 08, 2023
Filing Date:
March 31, 2020
Export Citation:
Assignee:
Toa Grout Industry Co., Ltd.
International Classes:
E03F7/00
Domestic Patent References:
| JP2003130252A | ||||
| JP2007332540A | ||||
| JP2019094959A | ||||
| JP2000154899A | ||||
| JP2012087838A | ||||
| JP2015175449A | ||||
| JP2003113992A |
Attorney, Agent or Firm:
Nakagawa International Patent Office