US 12,281,727 B2
Pipe transport device and pipe joining method inside pipeline construction shaft
Shozo Kishi, Amagasaki (JP); Kazuya Ito, Amagasaki (JP); Yuito Komaru, Amagasaki (JP); Ko Ishimura, Amagasaki (JP); Masataka Shimomura, Amagasaki (JP); Yutaka Fujimoto, Amagasaki (JP); and Kento Higashi, Amagasaki (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Appl. No. 17/441,320
Filed by KUBOTA CORPORATION, Osaka (JP)
PCT Filed Mar. 19, 2020, PCT No. PCT/JP2020/012350
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2020/196287, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-054008 (JP), filed on Mar. 22, 2019; and application No. 2019-054009 (JP), filed on Mar. 22, 2019.
Prior Publication US 2022/0178471 A1, Jun. 9, 2022
Int. Cl. E21D 11/40 (2006.01); F16L 1/036 (2006.01); F16L 1/09 (2006.01)
CPC F16L 1/09 (2013.01) [F16L 1/036 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A pipe joining method inside a pipeline construction shaft, in which a first pipe is loaded on a first transport trolley of a pipe transport device including the first transport trolley and a second transport trolley that are capable of traveling on rails in the pipeline construction shaft, a second pipe being loaded on the second transport trolley coupled to the first transport trolley via a coupler, the first pipe and the second pipe being transported, the first pipe and the second pipe being sequentially joined to a rearmost pipe of a pipeline in the pipeline construction shaft, the method comprising:
inside the pipeline construction shaft, moving the first transport trolley with the loaded first pipe and the second transport trolley with the loaded second pipe forward and joining one end of the first pipe to the rearmost pipe;
inside the pipeline construction shaft, lifting another end of the first pipe, moving the first transport trolley and the second transport trolley backward, and drawing the first transport trolley from beneath of the first pipe to a near side of the first pipe;
inside the pipeline construction shaft, removing the coupler to separate the first transport trolley and the second transport trolley;
inside the pipeline construction shaft, moving the first transport trolley backward and drawing the first transport trolley below the second pipe loaded on the second transport trolley; and
inside the pipeline construction shaft, moving the second transport trolley forward with the first transport trolley and joining one end of the second pipe on the second transport trolley to the other end of the first pipe joined to the rearmost pipe.