BS ISO 24044:2020 pdf free.Ships and marine technology一Deck machinery一Multifunctional manipulator.
BS ISO 24044 The slewing mechanism has two slewing hydraulic drive mechanisms which are respectively arranged on both sides of the lower plane of the slewing tower body. The slewing hydraulic drive mechanism is composed of a planetary speed reducer, a brake and a gear, and the brake is normally closed. The slewing hydraulic drive mechanism shall leave 1,5 mm eccentricity with the mounting axis to ensure that the slewing support meshes well with the slewing hydraulic drive mechanism gear and compensates for wear during use.For roller trains of the travelling mechanism, the two roller trains mounted on the front and rear ends of the lower portion of the carrier respectively shall be used, each roller train consisting of one
mounting shaft, four positive rollers, four return rollers and two swing frames, to accommodate to the vertical plane motion and horizontal yaw of the ship. Travelling drive should adopt the pinion and rack driving mode.The cable length of the cable reel on the travelling mechanism is one-half of the travelling stroke of the travelling multifunctional manipulator plus the safety ring number.The role of the speed control valve of the travelling mechanism is to automatically slow down and stop travelling near the stroke destination. The travelling mechanism of the hydraulic drive shall be equipped with a speed control valve to ensure the system travelling safety and buffers shall be installed at both ends of the travel stroke.The remote control system shall have a passive emergency stop signal. When the receiving system fails to receive continuous and valid transmission signals within 0,55 s (for example, the transmitting system has insufficient battery power, exceeds the effective service distance, is interfered with by the same frequency signal, or the signal is shielded), the receiving system shall cut off the output
automatically. The receiving system shall use a very narrow band frequency modulation and only the required frequency shall be allowed to pass through. A remote control system with automatic frequency management is adopted. When the same-frequency interference occurs, the operating frequency of the transmitting system shall be capable of being automatically changed to adjust the receiving system to a non-interfering frequency automatically and simultaneously so that the remote controller can operate normally.BS ISO 24044 pdf download.