Title:
微気圧波低減装置
Document Type and Number:
Japanese Patent JP6917755
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a micro pressure wave reducing device which can be easily installed on existing facilities and which can suitably reduce the tunnel micro pressure wave.SOLUTION: In a micro pressure wave reducing device 1, a tank 3 stores compressed air supplied from a compressed air source 2, an air nozzle 4 is disposed in the vicinity of an entrance of a tunnel 10 and blows compressed air supplied from the tank 3, a solenoid valve 5 can be changed between a closed state and an opened state of a flow path of a pipe 16 through which the compressed air flows from the tank 3 to the air nozzle 4, and the control unit controls the solenoid valve 5 so as to open the flow path when the leading end portion of the leading side of the traveling direction of a railway vehicle RV reaches a blowing operation start position P1 which is a position located before the entrance of the tunnel 10, and so as to close the flow path when the railway vehicle RV reaches a blowing operation end position P2 which is closer to the tunnel 10 than the blowing operation start position P1 and at which the leading end portion of the railway vehicle RV coincides with or is just before the entrance of the tunnel 10.SELECTED DRAWING: Figure 3
Inventors:
Hideki Kawamoto
Nakai alone
Nakai alone
Application Number:
JP2017078306A
Publication Date:
August 11, 2021
Filing Date:
April 11, 2017
Export Citation:
Assignee:
Kawasaki Heavy Industries, Ltd.
International Classes:
E21D9/14; E01B19/00; E01F8/00; E21D11/38
Domestic Patent References:
| JP2016215885A | ||||
| JP2005350042A | ||||
| JP2018052407A |
Foreign References:
| KR1020140035596A |
Attorney, Agent or Firm:
Naomi Katsura River