Aligning and adjusting device and method for center line of marine shafting

Abstract

The invention discloses an aligning and adjusting device and method for a center line of marine shafting. The aligning and adjusting device is directly fixed on a tail shaft and paper for displaying a laser emitting point is fixed on a ship, so that precise alignment of the center line of marine shafting cannot be affected by the unstable environment of a floating dock even when the ship is in the floating dock, the center line of marine shafting can be located rapidly through the aligning and adjusting device and method for the center line of marine shafting, the alignment is simple, the precision is high, the environment applicability is high, the structure is simple, the difficulty of an original alignment method is reduced greatly, time and labor are saved, the working efficiency is high, and the risk of damage to parts due to dismounting and mounting of the tail shaft is avoided.

Description

technical field [0001] The invention relates to the field of ships, in particular to a device and method for aligning the centerline of a ship's shafting system. Background technique [0002] When a newly built ship that has left the dock needs to be docked again for repairs for some reason, the shafting at the time of construction can no longer be found because the dock it enters is no longer the dock where the ship was built, but enters another dock , rudder system datum line, which requires that the center line of the shaft system rudder system needs to be repositioned after the reworked ship is docked. Due to the requirements for ship quality control, it is necessary to accurately locate the center line of the shaft system to ensure that the center deviation of the shaft and rudder system Meet the requirements of IACS standard. At present, repaired ships often enter dry dock or floating dock for maintenance. After the ship is docked, the centerline of the shafting is po...

AI Technical Summary

Problems solved by technology

At present, repaired ships often enter dry dock or floating dock for maintenance. After the ship is docked, the centerline of the shafting is positioned by laser instruments. Since the existing alignment method is manually aligned, the centerline positioning is accurate. The accuracy is low, and it needs to be adjusted for a long time to get close to the exact value. The work efficiency is low, the strength is high, and it takes time and energy. Before using the laser instrument, it is necessary to adjust the level of the laser instrument. At the same time, it is necessary to ensure the adjustment of the laser instrument. The process is carried out in a stable environment. However, when the ship enters the floating dock for repairs, due to the unstable internal environment, the adjustment error of the laser instrument is large, and the measurement results have no practical reference significance.

[0003] In order to solve the above problems, if it is necessary to accurately locate the shafting centerline, it is necessary to remove the stern shaft of the ship, and then use a laser instrument to find the shafting centerline according to the center of the flanges before and after the stern tube, but this method The cost is high, the construction period is long, and during the disassembly and assembly of the stern shaft, the risk of damage to the shaft system parts is extremely high, and the operability is not strong. At the same time, if this method is implemented in the floating dock, due to the unstable environment, it is also easy to Causes a large centerline positioning error

Images