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A catamaran model towing test device

A test device, catamaran technology, applied in the field of catamaran model towing test device, can solve the problems of complex hull structure, sensitive weight distribution, etc., and achieve the effects of high test accuracy, simple debugging, and convenient use and operation

Active Publication Date: 2019-08-06
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also problems such as complex hull structure and sensitivity to weight distribution.

Method used

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  • A catamaran model towing test device
  • A catamaran model towing test device
  • A catamaran model towing test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, the present invention includes a fixed connection mechanism body 1, a heave transmission system 2, a sheet positioning mechanism 3, a signal measurement system 4, and a data acquisition and recording system 5.

[0050] The fixed connection mechanism body 1 is tightly fixed on the trailer side bridge, the heave transmission system 2 is fixed on the fixed frame 6 of the fixed connection mechanism body 2, and the upper end of the sheet positioning mechanism 3 is connected with the heave transmission system 2, The lower end is connected to the sheet body of the catamaran model through the connecting plate 32 in the signal measurement system 4, and the heave, trim angle and load cell in the signal measurement system 4 are connected to the respective measurement and sensing units through bolts, etc., and the data The acquisition and recording system 5 is mainly used for powering the sensors in front and converting the analog electrical signals trans...

Embodiment 2

[0057] Such as Figure 9 As shown, it is a schematic diagram when the present invention is installed on an ordinary catamaran for a test. Before the test starts, firstly, the upper end of the present invention is tightly fixed on the trailer side through the connecting beam 7, the set screw 8, the nut, etc. in the fastening mechanism body 1. Above the bridge, the lower end is connected with the connecting plate on the catamaran through the fixed support 32 in the signal measurement system 4 . Then by adjusting the sheet positioning mechanism 3, the sheet spacing and height of the catamaran model are accurately regulated. During the test, the test data of the ship model such as heave, trim, and resistance are converted into electrical signals by the load cell, heave, and trim sensors in the signal measurement system 4, and then transmitted to the data acquisition and recording system 5 , the data acquisition and recording system 5 converts the analog electrical signal transmit...

Embodiment 3

[0059] Such as Figure 10 As shown, it is a schematic diagram of the present invention installed on a small waterplane catamaran for the test. Before the test starts, the upper end of the present invention is first tightly fixed by the connecting beam 7, the set screw 8, the nut, etc. in the fastening mechanism body 1. On the trailer bridge, the lower end is connected with the connecting plate on the catamaran through the fixed support 32 in the signal measurement system 4 . What is different from ordinary catamarans is that the small waterplane catamaran needs to obliquely penetrate the arm of the sheet body positioning mechanism 3 into the cabin of the small waterplane catamaran. Conditions require adjustments. During the test, the test data of the ship model such as heave, trim, and resistance are converted into electrical signals by the load cell, heave, and trim sensors in the signal measurement system 4, and then transmitted to the data acquisition and recording system ...

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Abstract

The invention discloses a catamaran model towing test device and belongs to the technical field of the ship hydrodynamic test device. The catamaran model towing test device is mainly composed of a fixed connection mechanism body, a sinkage drive system, a sheet body positioning mechanism, a signal measuring system and a data acquisition and recording system. The fixed connection body comprises a mount, a connection crossbeam and fastening screw rods. The sinkaage drive system comprises a sinkage leverage and a drive package. The sheet body positioning mechanism mainly comprises a sheet body positioning crossbeam and support arms. The signal measurement system includes a sinkage measurement sensing unit, a trim angle measurement sensing unit and a force sensing unit. To achieve the acquisition of each measurement sensor, the data acquisition and recording system records sinkage, flotation condition changes such as trim, and other parameters in the sailing process of the ship model. The device provided by the invention has the characteristics of reasonable design, simple structure, easy processing and manufacturing, low cost, easy operation and easy usage, high measurement precision, easy maintenance and wide range of applicable catamaran models.

Description

technical field [0001] The invention belongs to the technical field of ship hydrodynamic test devices, in particular to a catamaran model towing test device. Background technique [0002] The purpose of the ship model resistance test is to obtain the functional relationship between the ship model resistance and the speed, and then calculate the resistance performance of the real ship, and predict the effective power required by the real ship at a specified speed. Among them, the most commonly used method is to conduct tests in the ship model towing tank: when conducting the test, the instruments and equipment used to measure the resistance of the ship model are placed on the tank trailer, and the ship model is fixed on the trailer by a set of towing devices. On the top, the trailer drives the ship model forward at a constant speed according to the set speed, and simultaneously measures the resistance of the pool water to the ship model. However, in the prior art, the towing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 周广利振前李云波曹绪祥林建峰景涛魏少鹏郭航王翰林佘文轩
Owner HARBIN ENG UNIV
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