| 摘要 |
The present invention provides a connection switching structure whereby the working efficiency of connection switching can be enhanced, and it is possible to realize simplification, reduced size, and reduced cost of the structure. In the present invention, one connecting part 9 among a sliding-metal-frame-side connecting part 8 and a drive-device-side connecting part 9 is provided with a groove-shaped recess 94 and a through-hole 95 in this order from the distal-end side thereof, and a through-hole 81 is provided to the other connecting part 8 of the sliding-metal-frame-side connecting part 8 and the drive-device-side connecting part 9. During casting, a connecting pin is inserted and connected in the through-hole 95 of one connecting part 9 and the through-hole 81 of the other connecting part 8, and when a surface pressure load is released, the connecting pin is inserted and connected in the groove-shaped recess of the one connecting part 9 and the through-hole 81 of the other connecting part 8. |
