Werkzeugwechselvorrichtung einer Erdbaumaschine.

摘要

A construction machine typically comprises a mobile chassis having an arm vertically swingably mounted thereon, and a working accessory (118) is detachably retained by the tip end of the arm. The arm has a link arrangement (111,112) with pin holes at upper and lower portions thereof, retaining grooves (113) at upper end thereof. The accessory has pin holes (120,121) at front rear portions thereof. Retaining elements such as rings (131) or pin are fixed to the accessory. The retaining rings or pin are fitted in the retaining grooves to position the accessory so connecting pins (115,116) can be inserted into the pin holes to connect the accessory to the arm.