CN105788440A - Dragging device for test of small waterplane catamaran model - Google Patents
Dragging device for test of small waterplane catamaran model Download PDFInfo
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- CN105788440A CN105788440A CN201610184561.0A CN201610184561A CN105788440A CN 105788440 A CN105788440 A CN 105788440A CN 201610184561 A CN201610184561 A CN 201610184561A CN 105788440 A CN105788440 A CN 105788440A
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- catamaran
- towing
- dragging
- small waterplane
- model
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a dragging device for test of a small waterplane catamaran model. The dragging device comprises two fixing pedestals which are mounted in the bottom portions of two sheet models of a small waterplane catamaran respectively, two support rods are movably mounted on the two fixing pedestals respectively, and the end portion, close to the corresponding fixing pedestal, of each support rod is placed in a thrust axis of the corresponding sheet model of the small waterplane catamaran; and the dragging device further comprises a dragging cross frame, a dragging rod and an operational frame, the two ends of the dragging cross frame are connected with the ends, far from the fixing pedestals, of the support rods respectively, and the two ends of the dragging rod are connected with the dragging cross frame and the operational frame respectively. The device can simulate the navigation state of the small waterplane catamaran vividly, an action point of the dragging force is positioned in the thrust axes of the model, the vertical height of the action point of the dragging force is geometrically similar to that of the thrust action point of a practical ship, and the accuracy of resistance test and seakeeping test of the small waterplane catamaran model is improved.
Description
Technical field
The present invention relates to ship hydrodynamics assay device technical field, be specifically related to a kind of towing gear for small waterplane area twin hull ship model test.
Background technology
In prior art, the towing gear for carrying out Ship model test generally is directed to conventional monomeric ship, and the vertical height of drag application point during its test is generally its height of C.G..And the thrust point in the vertical direction of propeller is normally under water on entity boats and ships, its center of gravity is had a Trimming Moment.Owing to the water plane area of monohull is relatively big, the hull of monohull has bigger restoring moment, generally have ignored the impact on model test result of the height of drag application point in the vertical direction when carrying out model test.
For small waterplane area twin hull ship, its water plane area is less, and the restoring moment that hull has is less.If the vertical height of drag application point is different from the model thrust vertical height of some when carrying out model test, then during test, the attitude of model can change, thus measurement result is produced considerable influence.Owing to being unsatisfactory for geometric similarity relation between vertical height and the real ship thrust vertical height of point of towed-model point of force application when carrying out test, therefore result of the test is scaled to real ship time and can produce bigger error, it is impossible to accurate forecast reality ship performance.
Summary of the invention
For solving above-mentioned technical problem, embodiments provide a kind of towing gear for small waterplane area twin hull ship model test, it is suitable for small face line catamaran sheet body Model and carries out resistance test and seakeeping test, described towing gear includes two firm bankings for being separately mounted to two described small face line catamaran lamellar body model bottoms, two described firm bankings are movably installed with a support bar respectively, the end of one end of the close firm banking of described support bar is positioned in the thrust axis of described small face line catamaran sheet body Model, described towing gear also includes towing crossbearer, haulage rod and crosshead, the two ends of described towing crossbearer are connected with one end away from firm banking of a support bar respectively, the two ends of described haulage rod are connected with towing crossbearer and crosshead respectively.
Further, described towing gear also includes the bearing being arranged on described firm banking, and one end of described support bar is flexibly connected with described bearing.
It is preferred that the axis of described bearing is vertical with described thrust axis and intersects.
Further, described haulage rod can vertically up and down be connected on described crosshead.
It is preferred that one end of described haulage rod is fixed on the positive middle part of described towing crossbearer.
Technical solution of the present invention have the beneficial effect that by setting gradually, on small face line catamaran sheet body Model, the firm banking being connected, support bar, towing crossbearer, haulage rod and action bars, can truly simulate the operational configuration of small face line catamaran, owing to the end of one end of the close firm banking of support bar is positioned in the thrust axis of small face line catamaran sheet body Model, make last when carrying out model test, the drag application point of the trailer being connected with action bars is positioned in the thrust axis of this model, achieve towed-model point of force application and the entity boats and ships thrust point geometric similarity at vertical height, improve the resistance test of small waterplane area twin hull ship model and the accuracy of seakeeping test, technical support can be provided for the Study on hydrodynamic performance of small waterplane area twin hull ship.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of towing gear for small waterplane area twin hull ship model test that the embodiment of the present invention provides.
Wherein, accompanying drawing is labeled as:
1, small face line catamaran sheet body Model, 2, firm banking, 3, support bar, 4, thrust axis, 5, towing crossbearer, 6, haulage rod, 7, crosshead, 8, bearing.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Refer to shown in Fig. 1, the invention provides a kind of towing gear for small waterplane area twin hull ship model test, it is suitable for small face line catamaran sheet body Model 1 and carries out resistance test and seakeeping test, it includes for being separately mounted to two firm bankings 2 bottom two small face line catamaran sheet body Models 1, two firm bankings 2 are movably installed with a support bar 3 respectively, the end of one end of the close firm banking 2 of support bar 3 is positioned in the thrust axis 4 of small face line catamaran sheet body Model 1, this towing gear also includes towing crossbearer 5, haulage rod 6 and crosshead 7, the two ends of towing crossbearer 5 are connected with one end away from firm banking 2 of a support bar 3 respectively, the two ends of haulage rod 6 are connected with towing crossbearer 5 and crosshead 7 respectively.
Specifically, two small face line catamaran sheet body Models 1 are for simulating the small face line catamaran hull of entity, in the present embodiment, firm banking 2 is flexibly connected with support bar 3, the mode being flexibly connected has multiple, wherein in a kind of implementation, this towing gear also includes the bearing 8 being arranged on firm banking 2, and one end of support bar 3 is flexibly connected with bearing 8.Under this mounting means, support bar 3 has the degree of freedom rotated around bearing 8, and namely support bar 3 can rotate around the axis of bearing 8, makes pattern die draw up the effect of entity ship pitching.
It is preferred that the axis of bearing 8 is vertical with thrust axis 4 and intersects.
Further, haulage rod 6 can vertically up and down be connected on crosshead 7.
Specifically, in the present embodiment, haulage rod 6 and the mutual up and down connection of action bars 7 so that haulage rod 6 in the vertical direction has up and down degree of freedom, make model have the effect of simulation entity ship heave.
It is preferred that one end of haulage rod 6 is fixed on the positive middle part of towing crossbearer 5.
nullA kind of towing gear for small waterplane area twin hull ship model test that the embodiment of the present invention provides，By setting gradually, on small face line catamaran sheet body Model, the firm banking being connected、Support bar、Towing crossbearer、Haulage rod and action bars，Can truly simulate the operational configuration of entity small face line catamaran，Owing to the end of one end of the close firm banking of support bar is positioned in the thrust axis of small face line catamaran sheet body Model，Make last when carrying out model test，The drag application point of the trailer being connected with action bars is positioned in the thrust axis of this model，Achieve towed-model point of force application and the entity boats and ships thrust point geometric similarity at vertical height，Improve the resistance test of small waterplane area twin hull ship model and the accuracy of seakeeping test，Technical support can be provided for the Study on hydrodynamic performance of small waterplane area twin hull ship.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (5)
- null1. the towing gear for small waterplane area twin hull ship model test，It is suitable for small face line catamaran sheet body Model (1) and carries out resistance test and seakeeping test，It is characterized in that: described towing gear includes two firm bankings (2) for being separately mounted to two described small face line catamaran sheet body Model (1) bottoms，Two described firm bankings (2) are movably installed with a support bar (3) respectively，The end of one end of the close firm banking (2) of described support bar (3) is positioned in the thrust axis (4) of described small face line catamaran sheet body Model (1)，Described towing gear also includes towing crossbearer (5)、Haulage rod (6) and crosshead (7)，The two ends of described towing crossbearer (5) are connected with one end away from firm banking (2) of a support bar (3) respectively，The two ends of described haulage rod (6) are connected with towing crossbearer (5) and crosshead (7) respectively.
- 2. a kind of towing gear for small waterplane area twin hull ship model test according to claim 1, it is characterized in that: described towing gear also includes the bearing (8) being arranged on described firm banking (2), and one end of described support bar (3) is flexibly connected with described bearing (8).
- 3. a kind of towing gear for small waterplane area twin hull ship model test according to claim 2, it is characterised in that: the axis of described bearing (8) is vertical with described thrust axis (4) and intersects.
- 4. a kind of towing gear for small waterplane area twin hull ship model test according to claim 1, it is characterised in that: described haulage rod (6) can vertically up and down be connected on described crosshead (7).
- 5. a kind of towing gear for small waterplane area twin hull ship model test according to claim 1, it is characterised in that: one end of described haulage rod (6) is fixed on the positive middle part of described towing crossbearer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184561.0A CN105788440B (en) | 2016-03-29 | 2016-03-29 | A kind of towing gear for small waterplane area twin hull ship model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184561.0A CN105788440B (en) | 2016-03-29 | 2016-03-29 | A kind of towing gear for small waterplane area twin hull ship model test |
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| CN105788440A true CN105788440A (en) | 2016-07-20 |
| CN105788440B CN105788440B (en) | 2018-06-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932172A (en) * | 2017-05-08 | 2017-07-07 | 武汉理工大学 | Ship seakeeping experimental rig |
| WO2018137317A1 (en) * | 2017-01-25 | 2018-08-02 | 北京师范大学 | Simulation device for plants exposed to shallow water wave environment for long period of time |
| CN109334859A (en) * | 2018-09-10 | 2019-02-15 | 中国船舶工业集团公司第七0八研究所 | A kind of small waterplane area twin hull ship global vibration steel test model design method |
| CN109436194A (en) * | 2018-10-23 | 2019-03-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Two-way trailer-type model test apparatus |
| CN109799064A (en) * | 2018-12-06 | 2019-05-24 | 中国船舶工业集团公司第七〇八研究所 | A kind of ship's manoeuverability hydrodynamic(al) force test device and method |
| CN112683488A (en) * | 2020-12-08 | 2021-04-20 | 上海船舶运输科学研究所 | Resistance tester with adjustable sailing angle of ship model |
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| CN1775619A (en) * | 2005-12-01 | 2006-05-24 | 上海交通大学 | Dual-body small waterline surface hydrofoil composite high-speed ship |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018137317A1 (en) * | 2017-01-25 | 2018-08-02 | 北京师范大学 | Simulation device for plants exposed to shallow water wave environment for long period of time |
| AU2017395343B2 (en) * | 2017-01-25 | 2020-01-16 | Beijing Normal University | Simulation device for plants exposed to shallow water wave environment for long period of time |
| CN106932172A (en) * | 2017-05-08 | 2017-07-07 | 武汉理工大学 | Ship seakeeping experimental rig |
| CN109334859A (en) * | 2018-09-10 | 2019-02-15 | 中国船舶工业集团公司第七0八研究所 | A kind of small waterplane area twin hull ship global vibration steel test model design method |
| CN109436194A (en) * | 2018-10-23 | 2019-03-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Two-way trailer-type model test apparatus |
| CN109436194B (en) * | 2018-10-23 | 2020-04-03 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Bidirectional trailer type model test device |
| CN109799064A (en) * | 2018-12-06 | 2019-05-24 | 中国船舶工业集团公司第七〇八研究所 | A kind of ship's manoeuverability hydrodynamic(al) force test device and method |
| CN112683488A (en) * | 2020-12-08 | 2021-04-20 | 上海船舶运输科学研究所 | Resistance tester with adjustable sailing angle of ship model |
| CN112683488B (en) * | 2020-12-08 | 2022-11-25 | 上海船舶运输科学研究所 | Resistance tester with adjustable sailing angle of ship model |
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| Publication number | Publication date |
|---|---|
| CN105788440B (en) | 2018-06-26 |
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