| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate a complicated and expensive welding structure or such a formed casing by making the force generated at a slider or a wear pad work on a tension belt, and transmitting it into the collar of an outer telescopic part with the tension belt over a wide range. SOLUTION: This device, which guides an inner telescopic part 16 in the inner shaft area of the outer telescopic part in a crane telescopic boom, is constituted of a collar 10 in the front end of the outer telescopic part and sliders 20a, 20b which are disposed symmetrically to each other at the bottom part of the collar 10 on both sides of its longitudinal axis and are movably-supported within a collar plane on a tension belt 18 fixed on the collar.</p> |
