CN103630328B - Be applied to the device of test model stressing conditions in analysis cycle tank - Google Patents

Be applied to the device of test model stressing conditions in analysis cycle tank Download PDF

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Publication number
CN103630328B
CN103630328B CN201310659142.4A CN201310659142A CN103630328B CN 103630328 B CN103630328 B CN 103630328B CN 201310659142 A CN201310659142 A CN 201310659142A CN 103630328 B CN103630328 B CN 103630328B
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test
base
stressing conditions
points
analysis cycle
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CN103630328A (en
Inventor
马玉顺
匡俊
杨晋慧
杜新光
陆渊
李晓琪
郑治
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Shanghai Dongfang Marine Engineering Technology Co Ltd
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Shanghai Dongfang Marine Engineering Technology Co Ltd
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Abstract

The invention discloses a kind of device being applied to test model stressing conditions in analysis cycle tank, comprise suspension bracket, terminal box, a pair axis of guide, base and five-component balance device, the described axis of guide is arranged on the lower surface of suspension bracket by guide shaft support upper end, and lower end is arranged on the upper surface of base; Described five-component balance device is arranged on base upper surface and connects with described terminal box, installs the transmission rod that passes base kuppe terminal pad in the bottom of five-component balance device.Quality of the present invention is light, response is fast, and electric signal easily transmits, and is convenient to hydrodynamic(al) test Automatic survey; Volume is little, not only can measure the hydrodynamic(al) wind tunnel acted on full model, and can measure the hydrodynamic(al) wind tunnel acted on partial model or plug-in model-free.

Description

Be applied to the device of test model stressing conditions in analysis cycle tank
Technical field
The present invention relates to a kind of stressed analytical equipment under water, particularly relate to a kind of device being applied to test model stressing conditions in analysis cycle tank.
Background technology
Hydrodynamics is the science of hydrodynamic(al) and object interaction, is one of most important theory of naval technology.Nowadays pleasure boat, cargo ship, passenger steamer profile are updated, and performance improves constantly, invariably closely related with the development of hydrodynamics.In Novel steamship design, hydrodynamics will play the effect of ever more important, and wherein hydrodynamic test is more crucial at this.
Hydrodynamic(al) balance has the history in more than 100 years, along with the development of hydrodynamic(al) and experimental technique thereof, particularly over nearly 30 years, various types of strain balance is widely used in low speed and high speed hydrodynamic(al), and balance calibration equipment and calibration steps there has also been very large improvement.
But existing mechanical balance is measured, the large quality of its volume is heavy, Signal transmissions is slow, and measurement range is comparatively narrow, and its design processed complex, and cost is higher.
Summary of the invention
The object of the invention is to solve the problems of the prior art, a kind of device being applied to test model stressing conditions in analysis cycle tank is provided.
Technical scheme of the present invention is: the device being applied to test model stressing conditions in analysis cycle tank, comprise suspension bracket, terminal box, a pair axis of guide, base and five-component balance device, the described axis of guide is arranged on the lower surface of suspension bracket by guide shaft support upper end, and lower end is arranged on the upper surface of base; Described five-component balance device is arranged on base upper surface and connects with described terminal box, installs the transmission rod that passes base kuppe terminal pad in the bottom of five-component balance device.
Preferably, described suspension bracket two ends lower surface is along its length provided with a pair clamping block, and described clamping block is provided with compact heap.
Preferably, described guide shaft support comprises the first bearing and the second bearing, and the upper end of the described axis of guide is arranged on the lower surface of suspension bracket by the first bearing, lower end is arranged on the upper surface of base by the second bearing.
Preferably, described second bearing comprises upper bracket and sleeve, and described upper bracket is threaded in the top of sleeve, and described sleeve is arranged on the upper surface of base.
Preferably, the top of described base is provided with the sealed chamber of described five-component balance device sealing.
Preferably, described sealed chamber comprises horizontal organic glass and vertical organic glass, and described vertical organic glass is arranged circumferentially in the upper surface of base, and described horizontal organic glass sealing covers the top of described vertical organic glass.
Preferably, described five-component balance device comprises two points of force snesor, three points of force snesor and mount pad; Described two points of force snesor are arranged on the upper surface of mount pad, and described mount pad is arranged in guide shaft support; Described three points of force snesor connect with described transmission rod, and described three component sensor settings are in the below of two points of force snesor.
Preferably, described three points of force snesor are connected with described transmission rod by joint flange.
Preferably, described three points of force snesor are three beam types and four post beam types combination dynamometry, and wherein three beams mainly can measure the resistance of ship model in water and side force; Four post beams can measure the yawing of ship model in water.
Preferably, two points of force snesor are two main dynamometry of beam type, and wherein two beams can measure the raising force of ship model in water and rolling moment.
The present invention has following beneficial effect:
1) quality is light, response is fast, and electric signal easily transmits, and is convenient to hydrodynamic(al) test Automatic survey;
2) volume is little, not only can measure the hydrodynamic(al) wind tunnel acted on full model, and can measure the hydrodynamic(al) wind tunnel acted on partial model or plug-in model-free;
3) design, process simply, cost is lower, can configure multiple stage balance unit, realize the seriation of size and load in circulating water chennel, also can according to the balance unit of different test model design specialized;
4) be applicable to the various model support modes such as tail support, abdominal support, back-supported, easy to use, strong adaptability, can meet the requirement of dissimilar water tunnel test.
Accompanying drawing explanation
Fig. 1 is front section view of the present invention;
Fig. 1 a is side sectional view of the present invention;
Fig. 1 b is vertical view of the present invention;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the B-B view of Fig. 1;
Fig. 4 is the C-C view of Fig. 1;
Fig. 5 is two beam type schematic diagram of the present invention's two points of force snesor;
Fig. 6 is three beam type schematic diagram that the present invention three component passes.
Embodiment
The technological means realized to make the present invention, technical characteristic, goal of the invention and technique effect are easy to understand, and below in conjunction with concrete diagram, set forth the present invention further.
As shown in Fig. 1,1a, 1b, be a kind of device being applied to test model stressing conditions in analysis cycle tank of the present invention, comprise suspension bracket 100, terminal box 200, a pair axis of guide 300, base 400 and five-component balance device 500.Suspension bracket 100 of the present invention two ends lower surface is along its length provided with two pairs of clamping blocks 101, and the vertical section of this clamping block 101 is inverted U, arranges compact heap 1011 in the lower inside of clamping block 101.
As shown in Fig. 1 a, 1b, two axis of guides 300 are arranged on the lower surface of suspension bracket by guide shaft support, guide shaft support of the present invention comprises the first bearing 301 and the second bearing 302, the upper end of the described axis of guide 300 is arranged on the lower surface 102 of suspension bracket 100 by the first bearing 301, lower end is arranged on the upper surface 401 of base 400 by the second bearing 302.Second bearing 302 of the present invention comprises upper bracket 3021 and sleeve 3022, and upper bracket 3021 is threaded on sleeve 3022, and sleeve 3022 is arranged on the upper surface 401 of base.
As shown in Figure 2,3, 4, five-component balance device 500 of the present invention is arranged on base upper surface 401 and connects with terminal box 200 and carries out Signal transmissions, terminal box 200 is arranged on the upper surface of suspension bracket 100 by installing plate 202, the two ends of terminal box 200 is provided with signal and exports 201.The transmission rod 403 that one passes base kuppe terminal pad 402 is installed in the bottom of five-component balance device 500.The tail end joint test model 404 of this transmission rod 403, transmission rod 403 part is above the water surface 405.Transmission rod 403 is that test model 404 passes on moment and hydrodynamic most important approach with five-component balance device 500.
The sealed chamber 600 sealed by five-component balance device 500 is provided with above base 400.Sealed chamber 600 comprises horizontal organic glass 601 and vertical organic glass 602, the upper surface that vertical organic glass 602 is arranged circumferentially in base 400 forms a square or circular space, horizontal organic glass 601 sealing covers the top of vertical organic glass 602, constitutes the cavity of a sealing.
Five-component balance device 500 of the present invention comprises two points of force snesor, 501, three points of force snesor 502 and mount pad 503; Two points of force snesor 501 are arranged on the upper surface of mount pad 503, and mount pad 503 is arranged in guide shaft support 3021, and by the rotation of guide shaft support 3021 at sleeve 3022, the height that can realize this mount pad 503 regulates.Three points of force snesor 502 are arranged on the below of two points of force snesor 501, three points of force snesor 502 are connected by joint flange 4031 with transmission rod 403, the stressing conditions of two points of force snesor, 501, three points of force snesor 502 mainly water sensing drag, and this signal is sent to data acquisition.
Need to consider when designing five-component balance device 500 several respects factor as:
1) balance measurement number of components and design range thereof;
2) static calibration of balance precision and accuracy;
3) the maximum set size of balance permission;
4) model quality, centroid position and moment reference center position;
5) balance operating ambient temperature, humidity and pressure range;
6) amplitude of hydrodynamic(al) flow fluctuation and frequency;
7) type of attachment of balance and model, balance and pole and size for connection.
The design range of five-component balance device 500 determines according to the quality of the flow dynamic load acted on model and model, given in balance body axle system.The design range of each component of five-component balance device 500 is wanted choose reasonable and is mated, if mate unreasonable, can increase the design difficulty of strain balance, affect the performance of five-component balance device 500.
The accuracy Design index of five-component balance device 500 is: qualified index is 0.1% ~ 0.2%, and advanced index is 0.03% ~ 0.06%.The accuracy index of strain balance is: qualified index is 0.4% ~ 0.5%, and advanced index is 0.1% ~ 0.2%, and the precision of this invention is better than 0.1%.
Five-component balance device 500 is also very strict for sensitivity requirement, the design strain value scope of general high speed five-component balance device 500 is at 150 ~ 500 μ ε, the design strain value scope of low speed five-component balance device 500 is at 300 ~ 1000 μ ε, and the sensitivity of this invention is within 300 ~ 1000 μ ε scopes.
When five-component balance device 500 designs, ensure that five-component balance device 500 system has enough intensity, to ensure the safety that hydrodynamic(al) is tested.Moreover after ensuring sufficient intensity, rigidity is another important indicator that five-component balance device 500 designs.Insufficient rigidity has larger Nonlinear perturbations by causing between each component of balance, also can cause model deformation, affect measuring precision and accuracy, and when designing, this invention was also carried out calculating check, met Rigidity and strength requirement.
Five-component balance device 500 will have larger strain deformation ratio, and when the confession bridge voltage of metering circuit is certain, the size that five-component balance device 500 outputs signal depends on the strain of day flat elements.But, concerning the sky flat elements of a certain ad hoc structure, improve the decline that strain just means balance rigidity.Therefore, strain and rigidity are two conflicting indexs, so just there has been the concept of strain deformation ratio.Check checking computations have repeatedly been carried out in this invention in this respect, when version and physical dimension adjust repeatedly, obtain higher strain deformation ratio.
Five-component balance device 500 will have less temperature effect, and the height of temperature causes the change of balance zero drift and balance sensitivity, affects measuring precision and accuracy.Applicable temperature of the present invention need control within 0 ~ 40 °.
As shown in Figure 5 and Figure 6, according to the loudness size between the thickness of measuring sensor elastic beam and width, the version of composition element can be divided into sheet beam type and post beam type; Post beam type generally has single-column beam type, three post beam types, four post beam types and multicolumn beam type.Consider strain deformation than maximizing, when design three points of force snesor 502 structural designs, the composition element that have employed three beam types 5021 and four post beam types 5022 is measured resistance, side force, yawing; And the composition element that two points of force snesor 501 structural designs are two beam types 5011 is measured raising force, rolling moment.Through optimization repeatedly, the present invention has higher strain deformation ratio now.
Next than obvious position in strain deformation, needs to paste metal strain plate, utilizes strain-type shift theory can make resistance strain plate or strain film.It can experience the strain produced when measuring object receiving force or moment, and strain variation is converted to resistance variations, is converted to the change of voltage or electric current by electric bridge further.Need when selecting metal strain plate to consider several respects factor: the resistance value of foil gauge, insulation resistance, sensitivity coefficient, mechanical hysteresis, permission electric current, strain limit, drift and creep.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should belong to technology category of the present invention.

Claims (10)

1. be applied to the device of test model stressing conditions in analysis cycle tank, it is characterized in that: comprise suspension bracket, terminal box, a pair axis of guide, base and five-component balance device, this axis of guide upper end is arranged on the lower surface of suspension bracket by the described axis of guide by guide shaft support, this axis of guide lower end is arranged on the upper surface of base; Described five-component balance device is arranged on base upper surface and connects with described terminal box, installs the transmission rod that passes base kuppe terminal pad in the bottom of five-component balance device.
2. the device being applied to test model stressing conditions in analysis cycle tank according to claim 1, is characterized in that: described suspension bracket two ends lower surface is along its length provided with a pair clamping block, and described clamping block is provided with compact heap.
3. the device being applied to test model stressing conditions in analysis cycle tank according to claim 1, it is characterized in that: described guide shaft support comprises the first bearing and the second bearing, the upper end of the described axis of guide is arranged on the lower surface of suspension bracket by the first bearing, lower end is arranged on the upper surface of base by the second bearing.
4. the device being applied to test model stressing conditions in analysis cycle tank according to claim 3, it is characterized in that: described second bearing comprises upper bracket and sleeve, described upper bracket is threaded in the top of sleeve, and described sleeve is arranged on the upper surface of base.
5. the device being applied to test model stressing conditions in analysis cycle tank according to claim 1, is characterized in that: the top of described base is provided with the sealed chamber of described five-component balance device sealing.
6. the device being applied to test model stressing conditions in analysis cycle tank according to claim 5, it is characterized in that: described sealed chamber comprises horizontal organic glass and vertical organic glass, described vertical organic glass is arranged circumferentially in the upper surface of base, and described horizontal organic glass sealing covers the top of described vertical organic glass.
7. the device being applied to test model stressing conditions in analysis cycle tank according to claim 1, is characterized in that: described five-component balance device comprises two points of force snesor, three points of force snesor and mount pad; Described two points of force snesor are arranged on the upper surface of mount pad, and described mount pad is arranged in guide shaft support; Described three points of force snesor connect with described transmission rod, and described three component sensor settings are in the below of two points of force snesor.
8. the device being applied to test model stressing conditions in analysis cycle tank according to claim 7, is characterized in that: described three points of force snesor are connected with described transmission rod by joint flange.
9. the device being applied to test model stressing conditions in analysis cycle tank according to claim 7 or 8, is characterized in that: described three points of force snesor are three beam types and four post beam types combination dynamometry.
10. the device being applied to test model stressing conditions in analysis cycle tank according to claim 7, is characterized in that: described two points of force snesor are two beam types.
CN201310659142.4A 2013-12-09 2013-12-09 Be applied to the device of test model stressing conditions in analysis cycle tank Active CN103630328B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104280206B (en) * 2014-10-17 2017-03-01 华中科技大学 Ship model hydrodynamic performance test device and method
CN104697740A (en) * 2015-03-25 2015-06-10 浙江海洋学院 Water tank based accurate force measurement method
CN104819825A (en) * 2015-03-25 2015-08-05 浙江海洋学院 Water tank force measuring support
CN105020273A (en) * 2015-07-13 2015-11-04 江苏南铸科技股份有限公司 Guiding shaft bearing
CN109238647B (en) * 2018-10-26 2020-11-10 河海大学 Comprehensive test water tank for researching seabed wall surface effect

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CN203643125U (en) * 2013-12-09 2014-06-11 上海市东方海事工程技术有限公司 Device used for analyzing force condition of test model in cycling water tank

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SU1004795A1 (en) * 1980-07-18 1983-03-15 Предприятие П/Я В-8662 Device for measuring forces on a model
SU981836A1 (en) * 1981-05-20 1982-12-15 Институт гидромеханики АН УССР Two-component dynamometric tugging device for vessel model hydrodynamic testing
CN101246515A (en) * 2008-03-03 2008-08-20 哈尔滨工程大学 Digital ship model planar motion mechanism experimental method based on CFD software
CN103175673A (en) * 2012-11-20 2013-06-26 中国特种飞行器研究所 Hydrodynamic test measurement bridge with high control precision
CN203643125U (en) * 2013-12-09 2014-06-11 上海市东方海事工程技术有限公司 Device used for analyzing force condition of test model in cycling water tank

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