| 摘要 |
[PROBLEM] To provide a two-member connection structure for a working machine, which can hold outboard members and their corresponding inboard members for relative pivotal movement without arrangement of stoppers for restricting rotation of flange portions and a connector pin. [SOLUTION] A two-member connection structure is provided with an boom 4 to be arranged on a hydraulic excavator, an arm 5 arranged inboard the boom 4, outboard bushings 6 and inboard bushings 7 press-fitted in pin holes 4a, 5a of the boom 4 and arm 5, respectively, a connector pin 8 inserted in holes 6a of the outboard bushings 6 and holes 7a of the inboard bushings 7 to connect the boom 4 and arm 5 as two members for relative pivotal movement, and flange portions 9 integrally arranged on opposite end portions of the connector pin 8, respectively, to restrict slip-out of the connector pin 8. The connector pin 8 is arranged rotatably relative to both of the outboardbushings 6 and the inboardbushings 7, and the flange portions 9 are arranged slidably relative to outboard end faces 6b of the corresponding outboard bushings 6 without being prevented from rotation relative to the boom 4. |
