Title:
開口部閉鎖装置
Document Type and Number:
Japanese Patent JP6873728
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an opening portion closing device and an opening portion closing method capable of closing an opening portion by a lid member without an operator entering into a pneumatic space portion.SOLUTION: A pneumatic lid 60 configured to be foldable and expandable is hung in a folded state by a carrier device, and is carried into a working room from an opening portion for a material shaft. After carrying, the pneumatic lid 60 in a folded state is expanded by a pneumatic lid expanding device 100, and the pneumatic lid 60 is moved by the carrier device to a position where the pneumatic lid 60 covers the opening portion for the material shaft from the lower side.SELECTED DRAWING: Figure 2
Inventors:
Kago Hayakawa
Toshihiro Kondo
Tetsuya Koyo
Toshihiro Kondo
Tetsuya Koyo
Application Number:
JP2017024287A
Publication Date:
May 19, 2021
Filing Date:
February 13, 2017
Export Citation:
Assignee:
Oriental Shiraishi Co., Ltd.
International Classes:
E02D23/06
Domestic Patent References:
| JP2008057267A | ||||
| JP2003221834A | ||||
| JP9060018A | ||||
| JP2001317059A | ||||
| JP2000291017A | ||||
| JP6057757A | ||||
| JP2001107369A |
Attorney, Agent or Firm:
Masago Onishi
Hiroshi Kawano
Namiki Toshiaki
Hiroshi Kawano
Namiki Toshiaki