Self-propelled traction ship model control and measurement method

A measurement method and technology of towing ships, applied in the direction of measuring devices, testing of machines/structural components, instruments, etc., to achieve the effect of accurate test data, easy operation and timely processing

Pending Publication Date: 2019-08-02
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: aiming at the defects and deficiencies of the self-propelled ship model in the physical model test of the current navigable building, a control self-propelled traction ship model is proposed, and the prototype ship heave, water surface fluctuation, and ship safety margin are obtained by measurement. The method of quantity, section coefficient, and speed technical index of the ship entering and leaving the ship compartment

Method used

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  • Self-propelled traction ship model control and measurement method
  • Self-propelled traction ship model control and measurement method
  • Self-propelled traction ship model control and measurement method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A device for towing a ship model, comprising: a guide rail 2, a ship model tractor 3, a drive motor 4 and a fixed rod 8;

[0031] Above-mentioned driving motor 4 is fixedly installed on the ship model tractor 3;

[0032] The driving wheel 31 of the above-mentioned ship model tractor 3 is fixed along the guide track 2, so that the ship model tractor 3 can only move forward and backward along the guide track 2;

[0033] Above-mentioned ship model tractor 3 links to each other with ship model by fixed rod 8;

[0034] Above-mentioned fixed rod 8 is a cylindrical rod, passes through the middle hole of universal bearing 81 at one end of ship model tractor 3, fixed rod 8 can slide freely up and down in the middle hole of universal bearing 81, and universal bearing 81 is fixed on On the ship model tractor 3; so that the fixed rod 8 can move up and down in the vertical direction, when the fixed rod 8 is in a non-vertical state, it can still be kept consistent with the center ho...

Embodiment 2

[0039] In the ship lift project, in order to study the hydrodynamic conditions of ships entering and leaving the cabin, a local physical model of the cabin and approach channel with a scale of 1:12 was established, and a 3500t cargo ship was simulated by a traction ship model for testing.

[0040] Arranged as figure 1 As shown, the guide rail 2 is set above the ship model 1, the ship model tractor 3 is fixed on the guide rail 2, and the ship model is driven by the fixed rod 8. When the tester enters the relevant settings of the ship model on the ship model towing control system interface After parameters and control instructions, the ship model tractor 3 is driven by the drive motor 4 to drag the ship model 1 to move forward along the guide rail 2 . A laser range finder 7 is installed on the ship model tractor 3 to measure the sailing distance of the ship model, and then calculate the real-time speed of the ship model according to the sailing time of the ship model. Ultrasoni...

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Abstract

The invention relates to a self-propelled traction ship model control and measurement method, which is characterized by setting navigation acceleration, speed and stroke and the like of a ship model by utilizing a computer editing instruction; then, transmitting the information to a driving motor on a ship model tractor through lines to control the ship model tractor to drag the ship model to operate and monitoring the ship attitude through a measurement device; and determining various technical indexes, such as ship rinsing and sinking amount, water surface fluctuation, ship safety surplus, section modulus, channel surface fluctuation and ship speed in and out of a ship compartment in the prototype. The method has simple operation, and stable operation; and the measured data has the advantages of high real-time performance, high precision and good fitting effect with the prototype.

Description

technical field [0001] The invention relates to the technical field of physical model tests of navigable buildings, in particular to a control and measurement method for a self-propelled towing ship model. Background technique [0002] The ship model test has the advantages of simple operation, high data accuracy, and good fitting effect with the prototype. Various technical indicators such as water surface fluctuations and the speed of ships entering and leaving the cabin. [0003] Ship model tests can be divided into two categories: traction ship model and self-propelled ship model according to the different driving modes of the ship. In previous experiments, we found that the self-propelled ship model has its own defects. For example: during the start-up acceleration process, the ship model is partially affected by the propeller, and the sinking value of the self-propelled ship is larger than that of the traction ship model; Constant speed needs to increase the propell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 胡亚安李中华陈莹颖郭超
Owner NANJING HYDRAULIC RES INST
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