Title:
WORK TRUCK RUNNING IN A TUBE
Document Type and Number:
Japanese Patent JP3737877
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To permit running by easily getting over the difference, and to weaken the collision force to the portion with difference of the wheel frame thereby the damage of the wheel frame is prevented.
SOLUTION: In this in-tube running work truck, work equipment and an electronic control device are mounted on a truck body which is trailed by a running truck that runs inside the tube. A front and rear wheels are installed rotatably at both ends of an expandable and contractible wheel frame 10 which is provided at the front and rear of the truck body. This truck is configured so that at the side of forward direction of a front wheel 8 and the side of the rear end of a rear wheel 9, an auxiliary wheel 14 is axially supported free to revolve to the position closer to the center of the truck body from the installation positions of the front and rear wheels. In addition, an edge 10a of the wheel frame to the side of the inner wall of the tube in the forward direction is inclined between the front and rear wheels. Along a slope of the edge 10a of the wheel frame, an inclined rotating cylinder 20 is installed with an end 20a thereof in a shape of trapezoid cone with the lower side periphery sticking out of the slope 10a of the inclined revolving cylinder 20. Also the inclined revolving cylinder 20 of the wheel frame 10 serves as a protection member.
Inventors:
Yuji Hara
Takahiko Ohashi
Ryuichi Nakamura
Yoichiro Fukushima
Ryuji Kuroda
Kiyoshi Kanayama
Hitoshi Kishida
Yahagi Isamu
Naoki Kawazoe
Hiroyuki Tamaki
Kodera Masatoshi
Kazuyuki Saito
Takashi Chino
Takahiko Ohashi
Ryuichi Nakamura
Yoichiro Fukushima
Ryuji Kuroda
Kiyoshi Kanayama
Hitoshi Kishida
Yahagi Isamu
Naoki Kawazoe
Hiroyuki Tamaki
Kodera Masatoshi
Kazuyuki Saito
Takashi Chino
Application Number:
JP7628998A
Publication Date:
January 25, 2006
Filing Date:
March 24, 1998
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
JFE Engineering Corporation
jfe Koken Co., Ltd.
Denyo Co., Ltd.
JFE Engineering Corporation
jfe Koken Co., Ltd.
Denyo Co., Ltd.
International Classes:
B61B13/10; B62D57/024; G01N21/84; G01N21/88; G01N21/954; (IPC1-7): B61B13/10; G01N21/84; G01N21/88; //B62D57/024
Domestic Patent References:
| JP6298085A | ||||
| JP9030409A | ||||
| JP60125561A |
Attorney, Agent or Firm:
Isono Dozo
Tetsuo Tomita
Isono Dozo
Tetsuo Tomita
Isono Dozo