An attachment for a working machine, and a lock arrangement

摘要

Attachment 1 for mounting to a working arm with an actuator driving arrangement coupled to a fluid / electrical system and a lock member 33 which is movable between a first configuration where operation of the actuator driving mechanism is inhibited and a second configuration in which operation of the actuator drive mechanism is allowed. The lock member may include a valve 34 to prevent flow of fluid in a hydraulic system. The lock may cut off an electrical signal to disable operation of an actuator. The lock may include a lock cylinder 35. Further independent claims concern the lock arrangement preventing removal of a tool from the attachment.