Explosive-proof cabin crane capable of centrally and fixedly arranging driving device at end part

Abstract

The invention relates to an explosive-proof cabin crane capable of centrally and fixedly arranging a driving device at an end part. The explosive-proof cabin crane is characterized in that three rails are arranged under a cabin ceiling in a longitudinal direction; a double girder bridge is movably connected with the three rails through pulley blocks; a translation trolley is arranged in the middle part of the double girder bridge; a hoisting and lifting driving device and a transverse translation driving device are respectively arranged at both sides of the upper surface of the bottom part of a cabin, a longitudinal translation driving device is arranged in the middle part of the cabin, the hoisting and lifting driving device is connected with a hook assembly on the translation trolley through a steel wire rope and the pulley blocks, and the longitudinal translation driving device is connected with the double girder bridge through a transmission chain, an upper chain wheel assembly and a dragging chain; the transverse translation driving device is connected with two pulleys on the translation trolley through two steel wire ropes and the pulley blocks. The explosive-proof cabin crane has the advantages that by adopting a steel wire rope penetrating and winding manner, the breakthrough of a transmission technique is realized, a following cable of the explosive-proof cabin is not needed, the problem of difficulty in explosion prevention of the cabin crane in dangerous occasions is solved, the installation and maintenance cost of a system is reduced, and the lifting clearance height is increased.

Description

Technical field [0001] The invention relates to a ship engine room crane, in particular to an explosion-proof engine room crane with a driving device centrally fixedly arranged at the end of the ship. Background technique [0002] Like general workshop cranes, the existing marine engine room cranes use three motors to drive the lifting device, longitudinal translation device, and lateral translation device respectively. The motors are installed on the bridge or upside down under the bridge. The motor needs power Cables and control cables required for control move along with the bridge frame and the trolley. When there is explosive gas or dust in the engine room, it is difficult to carry out cable protection, and it is difficult to ensure the integrity of the system's explosion-proof characteristics, and it is contrary to GB / T17436-1998 ("Selection of explosion-proof electrical equipment in hazardous areas of ships"), section 5.3 related to "Cable Powered portable equipment shoul...

AI Technical Summary

Problems solved by technology

When there is explosive gas or dust in the engine room, it is difficult to carry out cable protection, and it is difficult to ensure the integrity of the explosion-proof characteristics of the system, and it is contrary to GB / T17436-1998 ("Selection of Explosion-proof Electrical Equipment in Hazardous Areas of Ships"), Section 5.3 "by cables Powered portable devices should not be used in hazardous areas"

[0003] Moreover, in order to improve the safety of the system, the existing explosion-proof cabin driving must adopt the intrinsically safe electronic control system, which is expensive

In addition, the upper and lower structures (including the motor) of the driving bridge in the workshop are large in size, while the height of the ship's engine room is limited

Images