CN101221094A - Shipborne equipment swinging and inclining test device and control method thereof - Google Patents
Shipborne equipment swinging and inclining test device and control method thereof Download PDFInfo
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- CN101221094A CN101221094A CNA2008100137579A CN200810013757A CN101221094A CN 101221094 A CN101221094 A CN 101221094A CN A2008100137579 A CNA2008100137579 A CN A2008100137579A CN 200810013757 A CN200810013757 A CN 200810013757A CN 101221094 A CN101221094 A CN 101221094A
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Abstract
The invention relates to a ship swing incline test device and a control method thereof; the invention is provided with a chassis, a longitudinal swing platform and a cross swing platform from top to bottom sequentially. The longitudinal swing platform is movably connected with a longitudinal swing revolution shaft. Two end points of the longitudinal swing revolution shaft are positioned at the left and right sides of the longitudinal swing platform and are respectively and movably connected with the upper end of a longitudinally arranged longitudinal swing supporter with the lower end fixed on the chassis. The cross swing platform is movably connected with a cross swing revolution shaft. Two end points of the cross swing revolution shaft are positioned at the front and back sides of the cross swing platform and are respectively and movably connected with the upper end of a longitudinally arranged cross swing supporter with the lower end fixed on the longitudinal swing platform and are provided with power and control by a hydraulic station. The invention leads the platforms of the test device to swing and incline longitudinally and transversely through the oil supply, oil return or locking control of the hydraulic station.
Description
Technical field the present invention relates to a kind of test unit, specifically, relates to a kind of the waving of electromechanical equipment peculiar to vessel, inclining experiment of being mainly used in, for can shipborne equipment peculiar to vesselly waving, normally move the isolated plant that test is provided under the tilt condition.The invention still further relates to the control method of this experimental provision.
Background technology electromechanical equipment peculiar to vessel need wave, can operate as normal under the tilt condition, so ship construction rules has the technical requirement of rolling, heel, pitching, trim.And for electromechanical equipment peculiar to vessel can above-mentionedly wave, normally operation under the tilt condition, need to create such artificial condition to test and verify, for the design and the manufacturer of seaborne machinery provides foundation, for the check authenticated unit provides platform.Yet up to now, do not have also that a kind of sexual valence is reasonable, gratifying such test unit of function is published or public use.
Summary of the invention the present invention aims to provide a kind of shipborne equipment and waves inclining experiment device and control method thereof.Technical matters to be solved is, satisfy electromechanical equipment peculiar to vesselly wave, test demand under the tilt condition, and dependable performance, cost is reasonable, control method is simple.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme.
A kind of shipborne equipment waves the inclining experiment device, comprises the electric control system of Hydraulic Station and Hydraulic Station, it is characterized in that: also comprise the chassis that sets gradually from bottom to top, pitching platform and rolling platform; Wherein, the pitching platform is connected with the pitching revolving shaft, and two end points of this pitching revolving shaft are positioned at the left and right sides of pitching platform and are fixed on the upper end flexible connection of the pitching support of the vertical setting on the chassis respectively with the lower end; The rolling platform is connected with the rolling revolving shaft, and two end points of this rolling revolving shaft are positioned at the both sides, front and back of rolling platform and are fixed on the upper end flexible connection of the rolling support of the vertical setting on the pitching platform respectively with the lower end;
Between chassis and pitching platform, be arranged with two cover pitching hydraulic cylinders in parallel, the work trend of two cover pitching hydraulic cylinders is vertical with described pitching revolving shaft trend; Pitching hydraulic cylinder outer end is connected on the chassis by support, and the inner is fixed with the pitching slide block, and the upper end of pitching connecting rod and pitching platform are hinged, and lower end and pitching slide block are hinged;
Between pitching platform and rolling platform, be arranged with two cover rolling hydraulic cylinders in parallel, the work trend of two cover rolling hydraulic cylinders is vertical with described rolling revolving shaft trend; Rolling hydraulic cylinder outer end is connected on the pitching platform by support, and the inner is fixed with the rolling slide block, and the upper end of rolling connecting rod and rolling platform are hinged, and lower end and rolling slide block are hinged.
The oil outlet end of the oil pump of described Hydraulic Station is connected with rolling 3-position 4-way reversing solenoid valve with pitching 3-position 4-way reversing solenoid valve respectively; Wherein, pitching 3-position 4-way reversing solenoid valve is connected with described two cover pitching hydraulic cylinders by two cover variable valve; Rolling 3-position 4-way reversing solenoid valve is connected with described two cover rolling hydraulic cylinders by two cover variable valve.
The control method of oscillation in the pitch mode is: under the condition of oil pump operation, control pitching 3-position 4-way reversing solenoid valve right side valve opening solenoid, give pitching hydraulic cylinder right side fuel feeding, cylinder rod promotes left, thereby driving the pitching slide block is moved to the left, drive the pitching platform by the pitching connecting rod and clockwise rotate around the pitching revolving shaft, pitching platform and rolling platform fixed thereon are vertically clockwise rotating together; When arriving desired location, contact switch and control the commutation of pitching 3-position 4-way reversing solenoid valve automatically, give pitching hydraulic cylinder left side fuel feeding this moment, cylinder rod promotes to the right, thereby driving the pitching slide block moves right, drive the pitching platform by the pitching connecting rod and rotate counterclockwise around the pitching revolving shaft, pitching platform and rolling platform fixed thereon are vertically rotating counterclockwise together; So the alternation tested device teeters in longitudinal periodicity;
The control method of lateral oscillation is: under the condition of oil pump operation, control pitching 3-position 4-way reversing solenoid valve left side valve opening solenoid, give rolling hydraulic cylinder left side fuel feeding, cylinder rod promotes to the right, move right thereby drive the rolling slide block, drive the rolling platform by the rolling connecting rod and rotate counterclockwise around the rolling revolving shaft; When arriving desired location, contact switch and control the commutation of rolling 3-position 4-way reversing solenoid valve automatically, give rolling hydraulic cylinder right side fuel feeding this moment, cylinder rod promotes left, is moved to the left thereby drive the rolling slide block, drives the rolling platform by the rolling connecting rod and clockwise rotates around the rolling revolving shaft; So the alternation tested device teeters at lateral periodicity;
The cycle of waving is regulated by variable valve, the position adjustments that the angle of waving is installed by gauge tap;
Method for controlling oblique is: when the pitching platform is put the obliquity of appointment, pitching 3-position 4-way reversing solenoid valve is mediated, all fuel feeding of interface A, B or oil return stop, locking pitching platform, pitching platform and rolling platform fixed thereon remain on the position of this fore-and-aft tilt together; When the rolling platform is put the obliquity of appointment, rolling 3-position 4-way reversing solenoid valve is mediated, all fuel feeding of interface C, D or oil return stop, and lock the rolling platform, the rolling platform are remained on the transverse pitch position of appointment.
Pitching and rolling can compoundly be carried out; Trim and heel be compound carrying out simultaneously; Trim and rolling can compoundly be carried out; Pitching and heel can compoundly be carried out.
Compare with prior art, the present invention has following characteristics:
1), waving the inclining experiment device is to promote slide block, drivening rod operation by hydraulic means to promote test unit and wave or tilt.Whole apparatus structure is simple and reliable.
2), pitching and rolling can be simultaneously compound, also can be independently single; Trim and heel can be simultaneously compound, also can be independently single; And trim and rolling can be made up, and pitching and heel also can make up.
3) wave cycle of waving of inclining experiment device and wave angle and can regulate by gauge tap.
Description of drawings Fig. 1 is a structural representation of the present invention.
Fig. 2 is a side-looking structural representation of the present invention.
Fig. 3 is a control principle synoptic diagram of the present invention.
Embodiment further specifies the present invention below in conjunction with accompanying drawing and example.
As Fig. 1-2, this example is disposed with chassis 1 from bottom to top, pitching platform 3 and rolling platform 7.Wherein, pitching platform 3 is connected with pitching revolving shaft 2, and two end points of this pitching revolving shaft 2 are positioned at the left and right sides of pitching platform 3 and are fixed on the upper end flexible connection of the pitching support 4 of The One On The Chassis vertical setting respectively with the lower end.Rolling platform 7 is connected with rolling revolving shaft 10, and two end points of this rolling revolving shaft 10 are positioned at the both sides, front and back of rolling platform 7 and are fixed on the upper end flexible connection of the rolling support 21 of the vertical setting on the pitching platform 3 respectively with the lower end.
Between chassis 1 and pitching platform 3, the work trend that is arranged with two cover pitching hydraulic cylinders, 15, two cover pitching hydraulic cylinders 15 in parallel is vertical with described pitching revolving shaft 2 trends.Pitching hydraulic cylinder 15 outer ends are connected on the chassis 1 by support, the inner is fixed with pitching slide block 16, pitching slide block 16 slides in being installed on The One On The Chassis slideway 19, the upper end of pitching connecting rod 18 is hinged by pitching link pin 20 and pitching platform 3, and the lower end is hinged by pitching slider pin 17 and pitching slide block 16.
Between pitching platform 3 and rolling platform 7, the work trend that is arranged with two cover rolling hydraulic cylinders, 8, two cover rolling hydraulic cylinders 8 in parallel is vertical with described rolling revolving shaft 10 trends.Rolling hydraulic cylinder 8 outer ends are connected on the pitching platform 3 by support, the inner is fixed with rolling slide block 9, slide in the slideway 14 of rolling slide block 9 on being installed on pitching platform 3, the upper end of rolling connecting rod 12 is hinged by rolling link pin 13 and rolling platform 7, and the lower end is hinged by rolling slider pin 11 and rolling slide block 9.
This example also comprises Hydraulic Station as shown in Figure 3.This Hydraulic Station is made up of fuel tank 24, oil pump 25, overflow blowdown valve 26, pitching 3-position 4-way reversing solenoid valve 27, variable valve 28, rolling 3-position 4-way reversing solenoid valve 29 and relevant pipeline, electric control system.
The oil inlet end of oil pump 25 connects fuel tank 24, and oil outlet end is connected with rolling 3-position 4-way reversing solenoid valve 29 with pitching 3-position 4-way reversing solenoid valve 27 respectively, also is connected with overflow blowdown valve 26 between the oil outlet end of oil pump 25 and fuel tank 24.Wherein, pitching 3-position 4-way reversing solenoid valve 27 is connected with aforementioned two cover pitching hydraulic cylinders 15 by two cover variable valve 28.Rolling 3-position 4-way reversing solenoid valve 29 is connected with aforementioned two cover rolling hydraulic cylinders 8 by two cover variable valve 28.Interface position A, B among Fig. 3, C, D correspond respectively to rolling first interface 5, rolling second interface 6 among pitching first interface 23 among Fig. 2, pitching second interface 22, Fig. 1.
During test, chassis 1 is fixed on the basis, ground, and tested device is fixed on the rolling platform 7 of the superiors.
The control method of oscillation in the pitch mode is: under the condition of oil pump 25 operations, control pitching 3-position 4-way reversing solenoid valve 27 right side valve opening solenoids, interface B gives pitching hydraulic cylinder 15 right side fuel feeding, the oil in left side is got back to fuel tank 24 through interface A by pitching 3-position 4-way reversing solenoid valve 27, cylinder rod promotes left, thereby driving pitching slide block 16 is moved to the left, pitching connecting rod 18 is swung clockwise around pitching slider pin 17, drive upwards swing of pitching link pin 20, and then drive pitching platform 3 and clockwise rotate around pitching revolving shaft 2, pitching platform 3 and rolling platform 7 fixed thereon are vertically clockwise rotating together; When arriving desired location, contact switch and control 27 commutations of pitching 3-position 4-way reversing solenoid valve automatically, this moment, interface A gave pitching hydraulic cylinder 15 left side fuel feeding, the oil on pitching hydraulic cylinder 15 right sides is got back to fuel tank 24 through interface B by pitching 3-position 4-way reversing solenoid valve 27, cylinder rod promotes to the right, thereby driving pitching slide block 16 moves right, pitching connecting rod 18 is around pitching slider pin 17 counter-clockwise swings, drive pitching link pin 20 to lower swing, and then drive pitching platform 3 and rotate counterclockwise around pitching revolving shaft 2, pitching platform 3 and rolling platform 7 fixed thereon are vertically rotating counterclockwise together; So the alternation tested device teeters in longitudinal periodicity, and the cycle of waving can be regulated by variable valve 26, and the angle of waving can be by the position adjustments of gauge tap installation.
The control method of lateral oscillation is: under the condition of oil pump 25 operations, control pitching 3-position 4-way reversing solenoid valve 29 left side valve opening solenoids, interface C gives rolling hydraulic cylinder 8 left side fuel feeding, the oil on right side is got back to fuel tank 24 through interface D by pitching 3-position 4-way reversing solenoid valve 29, cylinder rod promotes to the right, thereby driving rolling slide block 9 moves right, rolling connecting rod 12 is around rolling slider pin 11 counter-clockwise swings, drive upwards swing of rolling link pin 13, and then drive rolling platform 7 and rotate counterclockwise around rolling revolving shaft 10; When arriving desired location, contact switch and control 29 commutations of rolling 3-position 4-way reversing solenoid valve automatically, this moment, interface D gave rolling hydraulic cylinder 8 right side fuel feeding, the oil in rolling hydraulic cylinder 8 left sides is got back to fuel tank 24 through interface C by rolling 3-position 4-way reversing solenoid valve 29, cylinder rod promotes left, thereby driving rolling slide block 9 is moved to the left, rolling connecting rod 12 is swung clockwise around rolling slider pin 11, drive rolling link pin 13 to lower swing, and then drive rolling platform 7 and clockwise rotate around rolling revolving shaft 10; So the alternation tested device teeters at lateral periodicity, and the cycle of waving can be regulated by variable valve 28, and the angle of waving can be by the position adjustments of gauge tap installation.
Its method for controlling oblique is: when pitching platform 3 is put the obliquity of appointment, pitching 3-position 4-way reversing solenoid valve 27 is mediated, all fuel feeding of interface A, B or oil return stop, locking pitching platform 3, pitching platform 3 and rolling platform 7 fixed thereon just remain on the position of this fore-and-aft tilt together; When should rolling platform 7 putting the obliquity of appointment, rolling 3-position 4-way reversing solenoid valve 29 is mediated, all fuel feeding of interface C, D or oil return stop, and locking rolling platform 7 remains on rolling platform 7 the transverse pitch position of appointment.
Pitching and rolling can be simultaneously compound, also can be independently single; Trim and heel can be simultaneously compound, also can be independently single; And trim and rolling can be made up, and pitching and heel also can make up.
Institute's processing and fabricating wherein one peculiar to vesselly wave, the technical parameter of inclining experiment device (model C YBT-40) is as follows:
Tested device maximum weight: 4000kg,
Maximum installation dimension: the 2000mm * 700mm of tested device,
Maximum is waved angle: pitching ± 10 °, and rolling ± 22.5 °,
Minimum rolling period when maximum is waved angle: pitching 8 seconds, rolling 8 seconds,
The maximum inclination angle: trim ± 10 °, heel ± 22.5 °,
Test unit weight: 1800kg,
Test unit physical dimension: 2600mm * 1600mm * 1200mm (length * wide * height).
Claims (4)
1. a shipborne equipment waves the inclining experiment device, comprises the electric control system of Hydraulic Station and Hydraulic Station, it is characterized in that: also comprise the chassis (1) that sets gradually from bottom to top, pitching platform (3) and rolling platform (7); Wherein, pitching platform (3) is connected with pitching revolving shaft (2), and two end points of this pitching revolving shaft (2) are positioned at the left and right sides of pitching platform (3) and are fixed on the upper end flexible connection of the pitching support (4) of the vertical setting on the chassis (1) respectively with the lower end; Rolling platform (7) is connected with rolling revolving shaft (10), and two end points of this rolling revolving shaft (10) are positioned at the both sides, front and back of rolling platform (7) and are fixed on the upper end flexible connection of the rolling support (21) of the vertical setting on the pitching platform (3) respectively with the lower end;
Between chassis (1) and pitching platform (3), be arranged with two cover pitching hydraulic cylinders (15) in parallel, the work trend of two cover pitching hydraulic cylinders (15) is vertical with described pitching revolving shaft (2) trend; Pitching hydraulic cylinder (15) outer end is connected on the chassis (1) by support, and the inner is fixed with pitching slide block (16), and the upper end of pitching connecting rod (18) and pitching platform (3) are hinged, and lower end and pitching slide block (16) are hinged;
Between pitching platform (3) and rolling platform (7), be arranged with two cover rolling hydraulic cylinders (8) in parallel, the work trend of two cover rolling hydraulic cylinders (8) is vertical with described rolling revolving shaft (10) trend; Rolling hydraulic cylinder (8) outer end is connected on the pitching platform (3) by support, and the inner is fixed with rolling slide block (9), and the upper end of rolling connecting rod (12) and rolling platform (7) are hinged, and lower end and rolling slide block (9) are hinged.
2. shipborne equipment as claimed in claim 1 waves the inclining experiment device, it is characterized in that: the oil outlet end of the oil pump of described Hydraulic Station (25) is connected with rolling 3-position 4-way reversing solenoid valve (29) with pitching 3-position 4-way reversing solenoid valve (27) respectively; Wherein, pitching 3-position 4-way reversing solenoid valve (27) is connected with described two cover pitching hydraulic cylinders (15) by two cover variable valve (28); Rolling 3-position 4-way reversing solenoid valve (29) is connected with described two cover rolling hydraulic cylinders (8) by two cover variable valve (28).
3. shipborne equipment as claimed in claim 2 waves the control method of inclining experiment device, it is characterized in that: the control method of oscillation in the pitch mode is: under the condition of oil pump (25) operation, control pitching 3-position 4-way reversing solenoid valve (27) right side valve opening solenoid, give pitching hydraulic cylinder (15) right side fuel feeding, cylinder rod promotes left, thereby driving pitching slide block (16) is moved to the left, drive pitching platform (3) by pitching connecting rod (18) and clockwise rotate around pitching revolving shaft (2), pitching platform (3) and rolling platform (7) fixed thereon are vertically clockwise rotating together; When arriving desired location, contact switch and control pitching 3-position 4-way reversing solenoid valve (27) commutation automatically, give pitching hydraulic cylinder (15) left side fuel feeding this moment, cylinder rod promotes to the right, thereby driving pitching slide block (16) moves right, drive pitching platform (3) by pitching connecting rod (18) and rotate counterclockwise around pitching revolving shaft (2), pitching platform (3) and rolling platform (7) fixed thereon are vertically rotating counterclockwise together; So the alternation tested device teeters in longitudinal periodicity;
The control method of lateral oscillation is: under the condition of oil pump (25) operation, control pitching 3-position 4-way reversing solenoid valve (29) left side valve opening solenoid, give rolling hydraulic cylinder (8) left side fuel feeding, cylinder rod promotes to the right, move right thereby drive rolling slide block (9), drive rolling platform (7) by rolling connecting rod (12) and rotate counterclockwise around rolling revolving shaft (10); When arriving desired location, contact switch and control rolling 3-position 4-way reversing solenoid valve (29) commutation automatically, give rolling hydraulic cylinder (8) right side fuel feeding this moment, cylinder rod promotes left, be moved to the left thereby drive rolling slide block (9), drive rolling platform (7) by rolling connecting rod (12) and clockwise rotate around rolling revolving shaft (10); So the alternation tested device teeters at lateral periodicity;
The cycle of waving is regulated by variable valve (28), the position adjustments that the angle of waving is installed by gauge tap;
Method for controlling oblique is: when pitching platform (3) is put the obliquity of appointment, pitching 3-position 4-way reversing solenoid valve (27) is mediated, all fuel feeding of interface A, B or oil return stop, locking pitching platform (3), pitching platform (3) and rolling platform (7) fixed thereon remain on the position of this fore-and-aft tilt together; When rolling platform (7) is put the obliquity of appointment, rolling 3-position 4-way reversing solenoid valve (29) is mediated, all fuel feeding of interface C, D or oil return stop, and lock rolling platform (7), rolling platform (7) are remained on the transverse pitch position of appointment.
4. shipborne equipment as claimed in claim 3 waves the control method of inclining experiment device, it is characterized in that: pitching and rolling are compound carrying out; Trim and heel are compound carrying out of while; Trim and rolling are compound carrying out; Pitching and heel are compound carrying out.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2008100137579A CN100562736C (en) | 2008-01-08 | 2008-01-08 | A kind of shipborne equipment waves inclining experiment device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2008100137579A CN100562736C (en) | 2008-01-08 | 2008-01-08 | A kind of shipborne equipment waves inclining experiment device and control method thereof |
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| CN101221094A true CN101221094A (en) | 2008-07-16 |
| CN100562736C CN100562736C (en) | 2009-11-25 |
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Cited By (10)
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| CN102914443A (en) * | 2012-10-24 | 2013-02-06 | 中船华南船舶机械有限公司 | Balanced type test stand |
| CN103033383A (en) * | 2012-12-20 | 2013-04-10 | 苏州电器科学研究院股份有限公司 | Multi-dimensional tilt swing combination device |
| CN103592143A (en) * | 2013-10-16 | 2014-02-19 | 中国矿业大学 | Marine elevator test platform |
| CN104502107A (en) * | 2014-11-24 | 2015-04-08 | 华晨汽车集团控股有限公司 | General engine inclination test bench |
| CN106991865A (en) * | 2017-02-09 | 2017-07-28 | 沈阳工业大学 | Slide block connecting rod tilter |
| CN108362490A (en) * | 2018-04-25 | 2018-08-03 | 哈尔滨电气股份有限公司 | A kind of rotor-support-foundation system experimental provision of simulation ship heel |
| CN109341738A (en) * | 2018-12-07 | 2019-02-15 | 苏州世力源科技有限公司 | The inclination Swaying Test Platform of variable swing center |
| CN109663713A (en) * | 2018-12-05 | 2019-04-23 | 青岛理工大学 | Wax-leaching tilting machine and wax pouring method |
| CN110726573A (en) * | 2019-09-24 | 2020-01-24 | 中国舰船研究设计中心 | Throwing device for simulating ship rolling and pitching motion |
| CN112937795A (en) * | 2021-03-23 | 2021-06-11 | 中国船舶科学研究中心 | Roll device in air layer resistance reduction wave test and use method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU732162A1 (en) * | 1978-12-07 | 1980-05-05 | Предприятие П/Я Р-6109 | Arrangement for testing models of vessels |
| SU800780A1 (en) * | 1979-04-09 | 1981-01-30 | Предприятие П/Я А-3780 | Stand for testing large-sized boat hoists |
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- 2008-01-08 CN CNB2008100137579A patent/CN100562736C/en not_active Expired - Fee Related
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| CN102914443A (en) * | 2012-10-24 | 2013-02-06 | 中船华南船舶机械有限公司 | Balanced type test stand |
| CN103033383A (en) * | 2012-12-20 | 2013-04-10 | 苏州电器科学研究院股份有限公司 | Multi-dimensional tilt swing combination device |
| CN103592143A (en) * | 2013-10-16 | 2014-02-19 | 中国矿业大学 | Marine elevator test platform |
| CN103592143B (en) * | 2013-10-16 | 2015-09-23 | 中国矿业大学 | A kind of marine elevator test platform |
| CN104502107A (en) * | 2014-11-24 | 2015-04-08 | 华晨汽车集团控股有限公司 | General engine inclination test bench |
| CN106991865A (en) * | 2017-02-09 | 2017-07-28 | 沈阳工业大学 | Slide block connecting rod tilter |
| CN108362490A (en) * | 2018-04-25 | 2018-08-03 | 哈尔滨电气股份有限公司 | A kind of rotor-support-foundation system experimental provision of simulation ship heel |
| CN108362490B (en) * | 2018-04-25 | 2024-04-05 | 哈尔滨电气股份有限公司 | Rotor system experimental device for simulating ship transverse inclination |
| CN109663713A (en) * | 2018-12-05 | 2019-04-23 | 青岛理工大学 | Wax-leaching tilting machine and wax pouring method |
| CN109663713B (en) * | 2018-12-05 | 2023-09-26 | 青岛理工大学 | Wax draining tilting machine and wax pouring method |
| CN109341738A (en) * | 2018-12-07 | 2019-02-15 | 苏州世力源科技有限公司 | The inclination Swaying Test Platform of variable swing center |
| CN109341738B (en) * | 2018-12-07 | 2024-03-29 | 苏州世力源科技有限公司 | Tilting and swinging test bed with changeable swinging center |
| CN110726573A (en) * | 2019-09-24 | 2020-01-24 | 中国舰船研究设计中心 | Throwing device for simulating ship rolling and pitching motion |
| CN110726573B (en) * | 2019-09-24 | 2021-03-26 | 中国舰船研究设计中心 | Throwing device for simulating ship rolling and pitching motion |
| CN112937795A (en) * | 2021-03-23 | 2021-06-11 | 中国船舶科学研究中心 | Roll device in air layer resistance reduction wave test and use method thereof |
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| CN100562736C (en) | 2009-11-25 |
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Granted publication date: 20091125 Termination date: 20140108 |