Title:
階段昇降装置
Document Type and Number:
Japanese Patent JP6843354
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a stairway raising/lowering apparatus that is able to satisfactorily carry a to-be-carried target while restricting an increase in the number of components.SOLUTION: A stairway raising/lowering apparatus 1 comprises a base frame 60, a main track frame 30, and an auxiliary track frame 40. The auxiliary track frame 40 is provided between a grounding position where a crawler belt 24 is brought into contact with a grounding surface and a separation position where the crawler belt is separated from the grounding surface. On the rear-end side of the base frame 60, a pressing surface 61a is provided. When the front end of the base frame 60 is inclined upward by a telescopic cylinder 71, the pressing surface presses a connection member 51 connected to the auxiliary track frame 40, and moves the auxiliary track frame 40 toward the grounding position. The base frame 60 and the connection member 51 are coupled via an urging member 73 to which urging force has been applied in a shortening direction.SELECTED DRAWING: Figure 2
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Inventors:
Kawai Masaki
Yoshimura Mizumura
Yoshimura Mizumura
Application Number:
JP2017094649A
Publication Date:
March 17, 2021
Filing Date:
May 11, 2017
Export Citation:
Assignee:
JR East Logistics Co., Ltd.
Sanwa Co., Ltd.
Sanwa Co., Ltd.
International Classes:
B62D55/04; B62D55/075
Domestic Patent References:
| JP2012143382A | ||||
| JP20051445A | ||||
| JP5920777A | ||||
| JP2005280525A | ||||
| JP10129541A | ||||
| JP2012192774A | ||||
| JP2002178930A | ||||
| JP5639963A |
Foreign References:
| US20140332291 | ||||
| US20080179115 | ||||
| DE19915482A1 |
Attorney, Agent or Firm:
Ebisu International Patent Office