Gravity center and inertia adjusting device for ship and ocean engineering model

Abstract

The invention discloses a gravity center and inertia adjusting device for a ship and ocean engineering model. The gravity center and inertia adjusting device comprises a test base device, a test frame, a first movable pendulum device, a second movable pendulum device and a pendulum bracket, wherein the bearing test frame is arranged on the top surface of the test base device; the test base deviceis an installation and supporting platform of the overall measurement and adjustment device; the first movable pendulum device and the second movable pendulum device are symmetrically arranged at thetwo ends of the top surface of the bearing test frame; the pendulum bracket is arranged between the first movable pendulum device and the second movable pendulum device, and is rotatably connected with the first movable pendulum device and the second movable pendulum device respectively; the pendulum bracket is used for mounting and fixing a ship to be tested; the first movable pendulum device andthe second movable pendulum device are used for realizing inertia measurement and three-dimensional centroid angle rotation of the ship; and the test frame is used for supporting the first movable pendulum device and the second movable pendulum device, and movably adjusting the first movable pendulum device and the second movable pendulum device.

Description

technical field [0001] The invention relates to a ship and ocean engineering manufacturing technology, in particular to a center of gravity and inertia adjustment device for a ship and ocean engineering model. Background technique [0002] During the driving and berthing work of ships and offshore platforms, the stability of motion and work safety are closely related to their own quality characteristic parameters. The measurement of quality characteristic parameters is very important for the research and control of the movement process and work Safety is of great significance. Quality characteristic parameters refer to the general term of a series of parameters that reflect the shape, quality and distribution characteristics of products, and usually reflect the quality, center of mass and other performance parameters of ships and offshore engineering platforms. In the field of shipbuilding industry, quality characteristic parameters are of great significance to the performa...

AI Technical Summary

Problems solved by technology

[0008] The models of ships and offshore platforms are large-mass and not suitable for rollover. It is very difficult to realize the three-dimensional center of mass on a test bench, and it is even more difficult to integrate inertia measurement.

The main problems of the current ship and offshore platform models: 1. Multiple test benches are used to measure the quality characteristic parameters separately, and the plane centroid, height centroid, lateral inertia, and longitudinal inertia have many changes, and it is difficult to realize continuous adjustment of the system. Complicated

2. The lateral inertia and longitudinal inertia are restricted by the direction, and the model of the ship and the offshore platform cannot be turned over. The existing torsional inertia test bench is mainly used to measure the rotational inertia around the vertical axis. The measurement of the lateral inertia and longitudinal inertia is mainly The compound pendulum method is used to test the inertia. This method has low test accuracy and poor repeatability, and it is difficult to guarantee the reliability of the measurement data.

[0009] There is no report on the quality characteristic test system of ship and offshore platform models that can measure mass, three-dimensional center of mass, and inertia at one time and can be adjusted systematically.

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