Damping plumb bob for ship inclining experiment

Abstract

The invention relates to a damping plumb bob for a ship inclining experiment. The damping plumb bob for the ship inclining experiment is composed of two perpendicularly intersecting damping blades (1) and a cycloid fixing device (2) fixedly connected with the top ends of the damping blades. The shape of the damping blades is preferably rectangular. The area of the damping blades is 10000 mm<2>, and the thickness is 10 mm. The shape of the damping blades is round. The cycloid fixing device is a lifting lug or an eye plate. According to the damping plumb bob for the ship inclining experiment, the structure resistance value is greatly increased, the damping area is increased, it is ensured that the cycloid is vertical as much as possible, and meanwhile the swinging amplitude and the maximum swinging speed are effectively lowered. The measurement accuracy is greatly improved, and data are convenient to read by testers. Throughout the development history of damping plumb bobs for the ship inclining experiment, the most original weight hammer is developed to a weight hammer with damping blades and then to the cross damping plumb bob in the invention, the usual way of thinking of technicians in the industry is changed.

Description

technical field [0001] The invention relates to a damped wire hammer, in particular to a damped wire hammer suitable for ship inclination tests. Background technique [0002] The ship inclination test is an effective method to obtain the actual weight and center of gravity of the ship after the ship is heeled. According to the "Statutory Inspection Rules for Ships and Offshore Installations" (2011) of the Maritime Safety Administration of the People's Republic of China, for new ships, sister ships whose light ship displacement or longitudinal position deviation of the center of gravity exceeds the requirements, and ships whose stability has changed greatly during modification or repair . For ships in service whose stability is doubtful, an inclining test is to be carried out. [0003] A ship is a huge means of transportation composed of a variety of materials and equipment. Due to its complexity and size, there are certain cumulative deviations in the calculation of its wei...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this damped wire hammer is that the effective damping area of ​​its damping blades is small, and the actual effect of reducing the swing speed of the wire hammer is not obvious. It is still difficult for the test personnel to read, and the test accuracy cannot be strongly guaranteed.

Moreover, the wire hammer has many parts, and the structure is difficult to achieve complete symmetry, resulting in the deviation of the center of gravity

The gravity block brings a series of complex operations to the processing technology. In addition, the gravity block is circular, and the effect of the gravity block is not significant. Many processes such as assembly, positioning, welding, etc. will become complicated

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