US 12,365,567 B2
Work machine suspension device, retention device, and method for suspending structure member
Teppei Maedo, Hiroshima (JP); Yasuhiko Shimazu, Hiroshima (JP); Nobuhiro Takamatsu, Hiroshima (JP); and Kazufumi Kudara, Hiroshima (JP)
Assigned to KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP)
Appl. No. 17/640,719
Filed by KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima (JP)
PCT Filed Aug. 24, 2020, PCT No. PCT/JP2020/031865
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/054057, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-171662 (JP), filed on Sep. 20, 2019.
Prior Publication US 2022/0340395 A1, Oct. 27, 2022
Int. Cl. B66C 1/10 (2006.01); B66C 1/62 (2006.01); B66C 23/70 (2006.01)
CPC B66C 1/62 (2013.01) [B66C 23/70 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A work machine suspension device for conducting lifting work of lifting up a structure member included in a work machine by a lifting equipment, the work machine suspension device comprising:
an attachment part to be attached to the lifting equipment in the lifting work; and
a plurality of retention devices supported by the attachment part,
wherein each of the plurality of retention devices includes:
a proximal end portion connected to the attachment part;
a first leg portion that is supported by the proximal end portion and includes a first leg portion main body that is disposed below the proximal end portion;
a second leg portion that is supported by the proximal end portion and includes a second leg portion main body disposed below the proximal end portion, the second leg portion main body being disposed at an interval in a horizontal direction from the first leg portion main body; and
a support member supported by the first leg portion main body so as to be movable between an entry allowed position and a retention position,
the entry allowed position being a position where the support member retracts from the second leg portion main body to allow a retained portion as a part of the structure member to enter between the first leg portion main body and the second leg portion main body, and
the retention position being a position where the retained portion is retained on the support member while the support member is supported by the first leg portion main body and the second leg portion main body,
wherein each of the plurality of retention devices further includes an upper pressing member that is interposed between the proximal end portion and the support member so as to be supported by at least one of the proximal end portion, the first leg portion, and the second leg portion, the upper pressing member having an opposing surface opposed to an upper portion of the retained portion that is retained on the support member.