| 摘要 |
PROBLEM TO BE SOLVED: To improve heat resistance by eliminating resin and to absorb rotational fluctuation and torque fluctuation of an engine, in a shaft coupling provided at an input shaft side of a hydraulic pump of a construction machine.SOLUTION: A shaft coupling 40 connects between a motor 8 which drives a work machine and a hydraulic pump 11 which operates by the output of the motor. The shaft coupling 40 has a first member 41 connected to an output side of the motor and a second member 42 connected to an input shaft of the hydraulic pump. The first member is a single member, and it is configured by a large diameter ring-shaped first coaxial disk part 44, a small diameter ring-shaped second coaxial disk part 45 and a coaxial cylinder part 46 which connects the first coaxial disk part and the second coaxial disk part and extending in an axial direction. A plurality of opening parts 47a extending in the axial direction at intervals in a circumferential direction are formed at the coaxial cylinder part. A large diameter side end part of the opening part reaches the first coaxial disk part, and a small diameter side end part of the opening part reaches the second coaxial disk part. |
