A catwalk has outer and inner tilt up portions at most outer end from swing center. The outer tilt up portion is installed around first axis near the side, and has outer walkway above the axis and outer from the side, and is installed to rotate between horizontal and upper positions. The inner tilt up portion is installed around second axis above the first axis, and has inner walkway on the same plain with outer walkway, and is installed to rotate between horizontal and upper positions with the push up movement of the outer tilt up portion.
Catwalk of Construction Machine
2016-06-23
Patent
Elektronische Ressource
Englisch
British Library Online Contents | 1996