公开(公告)号：US20200346675A1

公开(公告)日：2020-11-05

申请号：US16739037

申请日：2020-01-09

Applicant: SOUTHWEST JIAOTONG UNIVERSITY

Inventor： Zeqiang ZHANG ,  Lixia ZHU ,  Silu LIU ,  Ying ZHANG ,  Yanqing ZENG

IPC: B61L27/00 ,  G06N7/00

Abstract: Disclosed is a method for arranging parallel maintenance lines for railway wagons, including: (1) obtaining design information of the parallel maintenance lines; (2) initially designing the parallel maintenance lines; where the maintenance lines comprise a disassembly line and an assembly line parallel to each other, and the disassembly line and the assembly line are connected through a track; (3) establishing a multi-objective mathematical model for solving a parallel maintenance line balancing problem, where the multi-objective mathematical model comprises a first model for minimizing the number of workstations, a second model for minimizing an idle time of the workstations and a third model for minimizing the number of maintenance resources; and (4) obtaining a feasible solution using an intelligent optimization algorithm.

公开(公告)号：US20230348234A1

公开(公告)日：2023-11-02

申请号：US17886484

申请日：2022-08-12

Applicant: Southwest Jiaotong University

Inventor： Zeqiang ZHANG ,  Yanqing ZENG ,  Hongbin ZHENG ,  Silu LIU ,  Tengfei WU ,  Wenming CHENG

IPC: B66C1/66 ,  B66C1/10

CPC classification number: B66C1/663 ,  B66C1/101

Abstract: The present invention discloses a pressing and stretching structure and a clamping structure of a container spreader, and belongs to the technical field of crane accessories. The pressing and stretching structure comprises a telescopic rod, a rotating mechanism and a guiding cylinder which is arranged vertically; a radially telescopic pin is arranged in the guiding cylinder and stoppers are arranged at a lower end; a first annular lug boss and a second annular lug boss are arranged at an interval from top to bottom on an outer wall of the telescopic rod; a sliding bush is sleeved between the first lug boss and the second lug boss; and the rotating mechanism is used for making the telescopic rod and the guiding cylinder to move relatively so that the limiting rod on the telescopic rod reaches the positions of the lower end surface and the upper end surface of the stoppers.