CN114475961A - Linear motor driven ship model forced rolling device - Google Patents
Linear motor driven ship model forced rolling device Download PDFInfo
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- CN114475961A CN114475961A CN202210136104.XA CN202210136104A CN114475961A CN 114475961 A CN114475961 A CN 114475961A CN 202210136104 A CN202210136104 A CN 202210136104A CN 114475961 A CN114475961 A CN 114475961A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 30
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VQAPWLAUGBBGJI-UHFFFAOYSA-N [B].[Fe].[Rb] Chemical compound [B].[Fe].[Rb] VQAPWLAUGBBGJI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
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- 230000005389 magnetism Effects 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/20—Designing vessels; Predicting their performance using towing tanks or model basins for designing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
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- Ocean & Marine Engineering (AREA)
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- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The invention provides a forced rolling device of a ship model driven by a linear motor, which comprises a main body shell, a main body bottom plate, a stator, a slide rail, a rotor box, a rotor, a load slider, a main body cover plate and a weight, wherein the main body shell is provided with a first end and a second end; the main body shell is a cuboid, a groove is formed in the uppermost surface of the main body shell, and a main body bottom plate is arranged on the bottom layer of the main body shell; two I-shaped sliding rails are fixed along the long edges of the two sides of the main body bottom plate; the stator is longitudinally fixed on the main body bottom plate between the two slide rails; the load-carrying sliding block is connected above the sliding rail through a sliding rail link buckle; the main body cover plate is connected with the main body shell through an assembling bolt and passes through an over gap of the load-bearing sliding block; the rotor box is fixed below the load slider, the rotor is fixed below the rotor box, and a gap is formed between the rotor and the stator; the rotor box supplies power to the rotor, a magnetic field is generated in a gap between the rotor box and the rotor box, and the load-carrying sliding block reciprocates on the sliding rail under the action of magnetic force; the weight is fixed in the weight box and then fixed on the load sliding block. The sliding block of the invention moves more accurately; the speed is high; the operating torque is larger; the reliability is good.
Description
Technical Field
The invention belongs to the technical field of ship experiment tests, and particularly relates to a forced rolling device of a ship model driven by a linear motor.
Background
In order to research the motion response mode of a ship under different wave conditions, test the wave resistance of the ship and develop a hydrodynamic experiment, specific waves are often generated in a towing tank through wave-making equipment and interact with a generated ship model, so that the performance of a real ship is verified through a model experiment. However, such tests still have limitations on hardware. First, many tow basins do not have an angled wave making function. Under the working condition that the simulation ship model is subjected to oblique waves, the trailer can only carry the ship model to obliquely navigate and meet the waves, and the effective navigation section of the ship model can be reduced in the test. For a large-scale ship model, the pool wall effect is obviously enhanced due to the limitation of the width of the pool, so that the accuracy of the test result is also influenced. Moreover, the test method for simulating the movement of the ship in the oblique waves by adopting the longitudinal movement of the trailer and the transverse movement of the truss has the defect that when the trailer and the truss are braked, because the trailer and the truss have forces in two directions, torques can be generated under the action of two forces in different directions, and damage is brought to a connecting structure between the trailer and the ship model and a test device. Secondly, when the wave motion response of the small and medium-scale ship model is researched, when the wave resistance and stability of the ship model are tested, the test cost is increased by frequently using the wave making machine. With the increasing of the test requirements, the wave resistance and stability test of the ship model can be carried out by a simpler, more convenient, less-cost and more accurate method under the condition of the existing water tank, so that the method is a choice with better engineering application prospect and economic value.
The existing forced rolling device usually adopts a linkage mechanism of a motor-driven belt transmission matched with a cam and a crank connecting rod, the method has the defects of complex structure, the precision of the traditional motor cannot be ensured, the turning point in the reciprocating motion of forced rolling motion can also generate stagnation, the overall mechanical efficiency is poor, and the precision is not high.
Disclosure of Invention
The invention aims to provide a forced rolling device of a ship model driven by a linear motor.
The purpose of the invention is realized by the following technical scheme:
a forced rolling device of a ship model driven by a linear motor comprises a main body shell, a main body bottom plate, a stator, two sliding rails, a sliding rail link buckle, a rotor box, a rotor, a load sliding block, a main body cover plate and weights;
the shell of the main body of the forced ship model rolling device is a cuboid, a groove is formed in the uppermost surface of the shell, and a rectangular main body bottom plate is arranged at the bottom layer of the groove;
the two I-shaped sliding rails are fixed on the main body bottom plate along the long edges of the two sides of the main body bottom plate and abut against the main body shell;
the stator is longitudinally fixed on the main body bottom plate between the two slide rails, and the width of the stator is smaller than the distance between the two slide rails;
the load sliding block is connected above the sliding rail through a sliding rail link buckle;
the main body cover plate is connected with the main body shell through an assembling bolt and passes through an over gap of the load-bearing sliding block;
the rotor box is fixed below the load slider, the rotor is fixed below the rotor box, and a gap is formed between the rotor and the stator; the rotor box is linked with a power supply through a gap between the main body shell and the main body cover plate, the rotor box supplies power to the rotor, the gap between the rotor and the stator generates a magnetic field, and the reciprocating motion of the load-bearing sliding block on the sliding rail is realized under the magnetic action of the rotor and the stator;
the weight is fixed in the weight box through the weight fixed slot, and the weight box is fixed above the load slider.
Further, the metal pin of the slide rail link buckle is engaged with the groove of the I-shaped slide rail.
Furthermore, a maximum of 9 weights can be loaded in the weight box on the load slider.
The invention has the beneficial effects that:
1. the ship model forced rolling device driven by the linear motor has a compact main body and a simple shape, and the linear motor module and the sliding block are integrated into a cuboid shell. The equipment has small scale storage and large torque supply, and is suitable for small and medium-sized ship model tests of pools with various scales.
2. The invention provides a forced rolling device of a ship model driven by a linear motor, provides a method for carrying out a full wave direction self-navigation test on a towing tank, realizes the motion simulation of an oblique wave ship model under the condition of facing waves, and simultaneously solves the problem that the tank cannot make waves obliquely. 3. The forced rolling device of the ship model driven by the linear motor realizes a simpler and more convenient test method for the wave resistance and stability test of the small-scale ship model, reduces the requirements of the test on a wave making machine, reduces the test cost, and has good engineering application prospect and economic value.
Above-mentioned linear electric motor drives ship model and forces rolling device compact structure adopts the electromagnetic drive mode, except above-mentioned practical application and worth, compares traditional servo motor drive belt and drives the mode that the slider and have following advantage: the slide block moves more accurately; the slide block speed is high; the operating torque is larger; the reliability is good; the rotor box is arranged under the cover plate and has the water splashing prevention capability.
Drawings
FIG. 1 is a schematic structural diagram of a ship model forced rolling device driven by a linear motor according to the present invention;
FIG. 2 is a top view of the forced rolling apparatus of ship model driven by linear motor according to the present invention;
FIG. 3 is a schematic view of the driving structure of the ship model forced rolling device driven by the linear motor according to the present invention;
FIG. 4 is a longitudinal cross-sectional view of the forced rolling apparatus of ship model driven by linear motor according to the present invention;
FIG. 5 is a schematic view of the load slider of the forced rolling apparatus of ship model driven by linear motor according to the present invention;
fig. 6 is a computer control interface diagram of the ship model forced rolling device driven by the linear motor.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
According to fig. 1 to 4, the forced rolling device of the ship model driven by the linear motor mainly comprises a rolling device main body and an upper computer system, and specifically comprises: the device comprises a main body shell 1, a main body bottom plate 2, a stator 3, a slide rail 4, a slide rail connecting buckle 5, a rotor box 6, a rotor 7, a load slider 8, a main body cover plate 9, a weight 10, a control box 11, an upper computer 12, a power supply 13, an assembling bolt 14 and an over gap 15.
The principle of the forced rolling device of the ship model driven by the linear motor is that power is supplied through a power supply, wherein a stator 3, a rotor box 6 and a rotor 7 form a linear motor module, the linear motor module drives a load-bearing sliding block 8 to do reciprocating motion on a sliding rail 4, and the speed of the load-bearing sliding block 8 is controlled through a control system to generate torque. In the experimental process, firstly, the waveform (period and displacement) of the movement of the load slider 8 is set through the host computer 12, Excel waveform data is imported into software, the waveform multiplying power is adjusted, the operation time course is adjusted, the waveform is sent to the control box 11, and the load slider 8 returns to zero (the load slider is arranged at the longitudinal midpoint of the device main body). The device is placed on the ship model, and along with the reciprocating motion of the load slide block 8, the device applies a moment which changes along with the set waveform to the ship model, so that the rolling of the ship model is influenced.
Under the action of the device, the ship model is forced to roll, namely, the ship model is forced to do the following sinusoidal motion around the gravity center:
Φ(t)＝Asinωt
according to fig. 1, a schematic structural diagram of a linear motor driven ship model forced rolling device is shown, the upper computer 12 of the invention requires the use of a system version more than Windows7 for operating software, the software has QT compilation completion, and a CH340 interface (USB serial port) driver is installed, and no other requirements are required for the configuration of the upper computer 12. Linear motor module and control box 11 adopt ann chuan motor SDG7S system, and wherein control box 11 has integrated USB serial ports to 485 serial ports module, STM32 controller, linear motor driver. The device body requires power supply using 220V ac. The control box 11 is grounded and is powered by the upper computer 12.
The host computer 12 functions include:
importing waveform data (Excel table);
displaying data in a graphical mode;
intercepting and sending waveform data;
adjusting the amplitude multiplying power of the waveform;
data is transmitted by subpackage;
the device is zeroed.
The appearance parameters comprise: the main body shell 1 is enclosed into a cuboid with the length of 1038mm, the width of 200mm and the height of 87mm, and the longitudinal wall thickness is 7mm and the transverse wall thickness is 5 mm. The main body bottom plate 2 is arranged at a position 34mm below the upper surface of the main body shell 1, and is 1024mm long, 186mm wide and 2mm thick. The length of the I-shaped slide rail 4 is 1024mm, the widest part is 10mm, the height is 12.5mm, and the depth of the inner groove of the I-shaped slide rail 4 is 3mm, and the height is 4 mm. The rotor box 6 is 100mm long, 100mm wide and 20mm high, and the rotor box 6 is powered by 220V alternating current. The stator 3 is 1024mm long, 100mm wide and 8mm thick. The length of the load slider 8 is 200mm, the width thereof is 200mm, the height thereof is 40mm, and the gap 15 between the load slider 8 and the main body cover plate 9 is 160mm and 5 mm. The main body cover plate 9 penetrates through the gap 15 of the load-carrying slide block 8, and the length of the main body cover plate 9 is 1024mm and the width of the main body cover plate 9 is 153 mm. The weight 10 is 1kg per unit weight, 45mm high and 15mm radius, and the load slider 8 can be mounted on 9 weights 10 at most.
The performance parameters include: the moving speed of the load slider 8 is 0-0.8 m/s. The amplitude of the movement of the load slider 8 is 412 mm. The load slider 8 moves at the fastest single step interval of 0.01s (the minimum interval of 0.01s for each point of waveform data). The single step maximum displacement was 300mm (waveform data at a maximum of 300mm per dot interval). The load slider 8 is loaded with a maximum of 9 standard weights 10 of 1kg (extra load will result in a decrease of the fastest running speed). Producing a maximum moment of 36.34N · m.
According to fig. 3, after a main body cover plate 9 of the forced ship model rolling experiment device is detached, a stator 3, slide rails 4, a slide block and slide rail connecting buckle 5, a rotor box 6 and a rotor 7 inside the forced ship model rolling experiment device can be clearly seen, two I-shaped slide rails 4 are fixed along the longitudinal direction of a main body base plate 2 through bolts, the two slide rails 4 are respectively abutted against main body shells 1 on two sides, the stator 7 is arranged in the middle of the two slide rails 4 along the longitudinal direction, the width of the stator 7 is smaller than the distance between the two slide rails 4, and the stator 7 is directly fixed on the main body base plate 2 through bolts. The load-carrying slide block 8 is connected with the slide rail 4 through the slide rail connecting buckle 5, and a metal pin of the slide rail connecting buckle 5 is meshed with a groove of the I-shaped slide rail 4, so that the contact area is reduced, and the friction is reduced; the rotor box 6 supplies power to the rotor 7, a gap between the rotor 7 and the stator 3 generates a magnetic field, and the loading slide block 8 reciprocates on the slide rail 4 under the magnetic action of the rotor 7 and the stator 3.
The following structure constitutes the drive system of the present invention. The stator 3 is 1024mm long, 100mm wide and 8mm thick and is made of rubidium iron boron magnet. The slide rail 4 is an I-shaped interface, the length is 1024mm, the widest part of the upper bottom and the lower bottom is 10mm, the height is 12.5mm, and the depth of an I-shaped inner groove is 3mm and the height is 4 mm. The rotor box 6 is arranged below the gap 15 of the main body cover plate 9, and is 100mm long, 100mm wide and 20mm high. The mover 7 is disposed under the mover case 6, and the mover 7 is made of stainless steel having a length of 40mm, a width of 80mm, and a thickness of 3mm, and generates magnetism when energized.
The control system of the invention is mainly divided into two parts, which are respectively an upper computer software and a lower computer controller, wherein the upper computer performs interface interaction and data processing; the lower computer is used for servo motion control and is connected with the lower computer through 485 serial port communication. FIG. six illustrates the computer-manipulated interface of the present invention. The function of the upper computer: the method comprises the steps of waveform data import (Excel table), data graphical display, waveform data interception and sending, waveform amplitude magnification adjustment, data packet distribution and equipment zeroing. The operation environment of the upper computer: windows7 and above, compiled software: QT, functional interface: USB changes RS485, the next machine function:
and data packet receiving and caching, and slider position and speed accurate control. The running environment of the lower computer: power supply: power AC220V <0.2A, dustproof and waterproof: IP56 level. The data import requirement of the upper computer is as follows: the file type: an Excel table; the format requirement is as follows: the rows and columns need to be in a top grid, the first row is a unit, the first column is a time interval, the display mode needs to be conventional and cannot be a scientific counting method or other formats, the position data can be the conventional or scientific counting method and other useless data cannot be in a table, otherwise, the data read by software is abnormal, so that the system works abnormally; naming format: optionally.
According to fig. 6, the manipulation steps are described: connecting a communication cable; inserting a linear motor driver power supply; inserting a power supply of a control box of the lower computer; the computer is plugged with a USB-to-485 module; and opening the upper computer software. And clicking to search a serial port and finding a serial port of the USB-to-485 module (if a plurality of COM ports exist on the computer at the same time, the device manager can be opened to determine the port number of the device, and if the COM ports cannot be searched, the device manager is asked to check whether the module is damaged, whether the contact is good and whether a serial port driver is installed). And clicking to open the serial port. Determining whether the software successfully communicates with the controller: clicking a 'motor power-on' button to check whether the linear motor module is pushed immovably or generates slight buzzing, then clicking once again to unlock to check whether the load slider 8 can be pushed, and if the control is unsuccessful, checking the connection accuracy when the wiring and the port are required to be checked. And selecting a file, clicking a 'select file' button to load a data file, displaying data in the upper left corner of the software after the data file is loaded successfully, and automatically generating a data fitting waveform in a waveform area. If the next piece of data needs to be loaded, the clear button needs to be clicked, the waveform is cleared, and then the file selection button is clicked to load the data. The waveform plot axes are set to accommodate the waveforms so that the waveforms of all data can be viewed in their entirety. If it is desired to intercept a portion of the waveform, a start point and an end point of the data may be set, and then a display graphics button may be clicked to perform a waveform preview to assist in determining the appropriate waveform data. If necessary, the graphic can be enlarged or reduced by setting the coordinate axes, and then the graphic is clicked and displayed. After the data is determined to be correct, if all the data is sent, the 'send' button is clicked, and if only part of the data is sent, the 'range send' button is clicked. After clicking 'send' or 'range send', please patiently wait for the data to be sent to be finished, if the sent data volume is larger, the waiting time is longer, five thousand data points probably need 50s, when the sending is finished, a popup window prompts the lower computer to finish receiving, and if the sending is failed, the sending is failed. When the linear motor module normally moves, if abnormal conditions are found, a 'pause equipment' button can be clicked, so that the linear motor stops moving, safety is ensured, and the linear motor module needs to be subjected to position zeroing operation to calibrate an initial position when running again. Clicking the 'slider left moving' button to move the slider to the leftmost side, colliding with the limiting block and then clicking the 'zeroing' button to perform automatic zeroing operation.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a linear electric motor drive ship model forces rolling device which characterized in that: the device comprises a main body shell (1), a main body base plate (2), a stator (3), two slide rails (4), a slide rail link buckle (5), a rotor box (6), a rotor (7), a load slider (8), a main body cover plate (9) and weights (10);
the shell (1) of the main body of the forced ship model rolling device is a cuboid, a groove is formed in the uppermost surface of the shell, and a rectangular main body bottom plate (2) is arranged at the bottom layer of the groove;
the two I-shaped sliding rails (4) are fixed on the main body bottom plate (2) along the long edges of the two sides of the main body bottom plate (2) and abut against the main body shell (1);
the stator (3) is longitudinally fixed on the main body bottom plate (2) between the two sliding rails (4), and the width of the stator (3) is smaller than the distance between the two sliding rails (4);
the load sliding block (8) is connected above the sliding rail (4) through a sliding rail connecting buckle (5);
the main body cover plate (9) is connected with the main body shell (1) through an assembling bolt (14) and passes through an over gap (15) of the load-bearing sliding block (8);
the rotor box (6) is fixed below the load slider (8), the rotor (7) is fixed below the rotor box (6), and a gap is formed between the rotor (7) and the stator (3); the rotor box (6) is linked with the power supply (13) through a gap between the main body shell (1) and the main body cover plate (9), the rotor box (6) supplies power to the rotor (7), the gap between the rotor (7) and the stator (3) generates a magnetic field, and the reciprocating motion of the load-bearing sliding block (8) on the sliding rail (4) is realized under the magnetic action of the rotor (7) and the stator (3);
the weight (10) is fixed in the weight box through a weight fixing groove, and the weight box is fixed above the load sliding block (8).
2. The forced rolling device of ship model driven by linear motor as claimed in claim 1, wherein: and a metal pin of the slide rail link buckle (5) is meshed with a groove of the I-shaped slide rail (4).
3. The forced rolling device of ship model driven by linear motor as claimed in claim 1, wherein: the weight box on the load slider (8) can be loaded with 9 weights (10) at most.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210136104.XA CN114475961A (en) | 2022-02-15 | 2022-02-15 | Linear motor driven ship model forced rolling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210136104.XA CN114475961A (en) | 2022-02-15 | 2022-02-15 | Linear motor driven ship model forced rolling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115158578A (en) * | 2022-08-22 | 2022-10-11 | 广船国际有限公司 | Ship rolling test device |
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| CN115158578A (en) * | 2022-08-22 | 2022-10-11 | 广船国际有限公司 | Ship rolling test device |
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Application publication date: 20220513 |