CN103630328A - Device for analyzing stress conditions of test model in circulating water channel - Google Patents

Device for analyzing stress conditions of test model in circulating water channel Download PDF

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Publication number
CN103630328A
CN103630328A CN201310659142.4A CN201310659142A CN103630328A CN 103630328 A CN103630328 A CN 103630328A CN 201310659142 A CN201310659142 A CN 201310659142A CN 103630328 A CN103630328 A CN 103630328A
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component
test
base
balance
stressing conditions
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CN201310659142.4A
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CN103630328B (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 device for analyzing stress conditions of a test model in a circulating water channel. The device comprises a hanger, a junction box, a pair of guide shafts, a base, and a five-component balance device. The upper ends of the guide shafts are mounted on the lower surface of the hanger through guide shaft supports, and the lower ends of the guide shafts are mounted on the upper surface of the base. The five-component balance device is mounted on the upper surface of the base and connected with the junction box. A force transmission bar penetrating a base guide cover connecting disk is mounted at the bottom of the five-component balance device. The device is light in weight and high in response speed, allows electrical signals to be transmitted easily, allows hydrodynamic test measurement to be automated, is small in size, can be used to measure hydrodynamic force and torque acting on the full model, and can also be used to measure hydrodynamic force and torque acting on a part model or hanger-free model.

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, relate in particular to a kind of device that is 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.
The hydrodynamic(al) balance history of existing more than 100 years, development along with hydrodynamic(al) and experimental technique thereof, particularly, over nearly 30 years, various types of strain balances are widely used in low speed and high speed hydrodynamic(al), and balance calibration equipment and calibration steps have also had very large improvement.
But existing mechanical balance is measured, the large quality of its volume is heavy, signal transmission 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 that is applied to test model stressing conditions in analysis cycle tank is provided.
Technical scheme of the present invention is: the device that is applied to test model stressing conditions in analysis cycle tank, comprise suspension bracket, terminal box, a pair of axis of guide, base and five-component balance device, the described axis of guide is arranged on the lower surface of suspension bracket by axis of guide bearing upper end, lower end is arranged on the upper surface of base; Described five-component balance device is arranged on base upper surface and joins with described terminal box, in the bottom of five-component balance device, one transmission rod through base kuppe terminal pad is installed.
Preferably, described suspension bracket two ends lower surface is along its length provided with a pair of clamping block, on described clamping block, is provided with compact heap.
Preferably, described axis of guide bearing 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, and lower end is arranged on the upper surface of base by the second bearing.
Preferably, described the 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 circumferential arrangement is at 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 component sensors, three component sensor and mount pads; Described two component installation of sensors are at the upper surface of mount pad, and described mount pad is arranged on axis of guide bearing; Described three component sensors and described transmission rod join, and described three component sensor settings are below two component sensors.
Preferably, described three component sensors join by joint flange and described transmission rod.
Preferably, described three component sensors are three beam types and four post beam types combination dynamometry, and wherein three beams mainly can be measured resistance and the side force of ship model in water; Four post beams can be measured the yawing of ship model in water.
Preferably, two component sensors are two main dynamometry of beam type, and wherein two beams can be measured raising force and the rolling moment of ship model in water.
The present invention has following beneficial effect:
1) quality is light, response is fast, and electric signal easily transmits, and is convenient to the robotization of hydrodynamic(al) experimental measurement;
2) volume is little, not only can measure the hydrodynamic(al) wind tunnel acting on full model, and can measure the hydrodynamic(al) wind tunnel acting on partial model or plug-in model-free;
3) simply, cost is lower, can in circulating water chennel, configure many balance units, realizes the seriation of size and load, also can be according to the balance unit of different test model design specialized for design, processing;
4) applicable to various model supporting way such as tail support, abdominal support, back-supporteds, 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 component sensors;
Fig. 6 is three beam type schematic diagram that the present invention's three component pass.
Embodiment
For technological means, technical characterictic, goal of the invention and the technique effect that the present invention is realized is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Fig. 1,1a, 1b, for a kind of device that is applied to test model stressing conditions in analysis cycle tank of the present invention, comprise suspension bracket 100, terminal box 200, a pair of 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, in the lower inside of clamping block 101, compact heap 1011 is set.
As shown in Fig. 1 a, 1b, two axis of guides 300 are arranged on the lower surface of suspension bracket by axis of guide bearing, axis of guide bearing 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.The 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 joins and carry out signal transmission with terminal box 200, terminal box 200 is arranged on the upper surface of suspension bracket 100 by installing plate 202, be provided with signal output 201 on the two ends of terminal box 200.In the bottom of five-component balance device 500, a transmission rod 403 through base kuppe terminal pad 402 is installed.The tail end joint test model 404 of this transmission rod 403, transmission rod 403 parts are above the water surface 405.Transmission rod 403 is that test model 404 is passed on moment and hydrodynamic most important approach with five-component balance device 500.
Above base 400, be provided with the sealed chamber 600 of five-component balance device 500 sealings.Sealed chamber 600 comprises horizontal organic glass 601 and vertical organic glass 602, vertically organic glass 602 circumferential arrangement form a square or circular space at the upper surface of base 400, horizontal organic glass 601 sealings cover the top of vertical organic glass 602, have so just formed the cavity of a sealing.
Five-component balance device 500 of the present invention comprises two component sensors 501, three component sensors 502 and mount pad 503; Two component sensors 501 are arranged on the upper surface of mount pad 503, and mount pad 503 is arranged on axis of guide bearing 3021, the rotation by axis of guide bearing 3021 at sleeve 3022, and the height that can realize this mount pad 503 regulates.Three component sensors 502 are arranged on the below of two component sensors 501, three component sensors 502 join by joint flange 4031 with transmission rod 403, two component sensors 501, three component sensors 502 are mainly the stressing conditions of water sensing drag, and this signal are sent to data acquisition.
When design five-component balance device 500, need to consider 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 that balance allows;
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 is to determine with the quality of model according to acting on flow dynamic load on model, given in balance axon is.The design range of five-component balance device 500 each components is wanted choose reasonable and is mated, if mate unreasonablely, can increase the design difficulty of strain balance, affects 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 requires also very strict for sensitivity, 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.
During 500 design of five-component balance device, guarantee that five-component balance device 500 systems have enough intensity, to guarantee the safety of hydrodynamic(al) test.Moreover, after ensuring sufficient intensity, rigidity is another important indicator of five-component balance device 500 designs.Insufficient rigidity has larger Nonlinear perturbations by causing between each component of balance, also can cause model deformation, affects measuring precision and accuracy, and when design, this invention was also carried out calculating check, met Rigidity and strength requirement.
Five-component balance device 500 will have larger strain deformation ratio, in the situation that metering circuit is certain for bridge voltage, the size of five-component balance device 500 output signals 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, in version and physical dimension adjustment, repeatedly in the situation that, have obtained higher strain deformation ratio.
Five-component balance device 500 will have less temperature effect, and the height of temperature causes the variation of balance zero drift and balance sensitivity, affects measuring precision and accuracy.Applicable temperature of the present invention need be controlled 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 component sensor 502 structural design, adopted the composition element of three beam types 5021 and four post beam types 5022 to measure resistance, side force, yawing; And the composition element that two component sensor 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, need to paste metal strain plate in strain deformation, utilizes strain-type shift theory can make resistance strain plate or strain film.It can experience the strain producing while measuring object receiving force or moment, and strain variation is converted to resistance variations, is further converted to the variation of voltage or electric current by electric bridge.When selecting metal strain plate, need 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.Be that all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, 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 of axis of guide, base and five-component balance device, the described axis of guide is arranged on the lower surface of suspension bracket by axis of guide bearing upper end, lower end is arranged on the upper surface of base; Described five-component balance device is arranged on base upper surface and joins with described terminal box, in the bottom of five-component balance device, one transmission rod through base kuppe terminal pad is installed.
2. the device that is 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 of clamping block, on described clamping block, is provided with compact heap.
3. the device that is applied to test model stressing conditions in analysis cycle tank according to claim 1, it is characterized in that: described axis of guide bearing 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 that is applied to test model stressing conditions in analysis cycle tank according to claim 3, it is characterized in that: described the 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 that is 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 that is 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 circumferential arrangement is at the upper surface of base, and described horizontal organic glass sealing covers the top of described vertical organic glass.
7. the device that is 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 component sensors, three component sensor and mount pads; Described two component installation of sensors are at the upper surface of mount pad, and described mount pad is arranged on axis of guide bearing; Described three component sensors and described transmission rod join, and described three component sensor settings are below two component sensors.
8. the device that is applied to test model stressing conditions in analysis cycle tank according to claim 7, is characterized in that: described three component sensors join by joint flange and described transmission rod.
9. according to the device that is applied to test model stressing conditions in analysis cycle tank described in claim 7 or 8, it is characterized in that: described three component sensors are three beam types and four post beam types combination dynamometry.
10. the device that is applied to test model stressing conditions in analysis cycle tank according to claim 7, is characterized in that: described two component sensors 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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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104596734A (en) * 2014-09-28 2015-05-06 中国特种飞行器研究所 Hydrodynamic test model transverse moment measuring device
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
CN104596734B (en) * 2014-09-28 2017-01-04 中国特种飞行器研究所 A kind of hydrodynamic test model heeling moment measurement apparatus
CN104280206B (en) * 2014-10-17 2017-03-01 华中科技大学 Ship model hydrodynamic performance test device and method
CN109238647A (en) * 2018-10-26 2019-01-18 河海大学 A kind of compbined test sink for studying sea bed wall effect
CN113788123A (en) * 2021-08-18 2021-12-14 华中科技大学 Device and method for detecting hydrostatic performance of ship model in any floating state

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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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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104596734A (en) * 2014-09-28 2015-05-06 中国特种飞行器研究所 Hydrodynamic test model transverse moment measuring device
CN104596734B (en) * 2014-09-28 2017-01-04 中国特种飞行器研究所 A kind of hydrodynamic test model heeling moment measurement apparatus
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
CN109238647A (en) * 2018-10-26 2019-01-18 河海大学 A kind of compbined test sink for studying sea bed wall effect
CN109238647B (en) * 2018-10-26 2020-11-10 河海大学 Comprehensive test water tank for researching seabed wall surface effect
CN113788123A (en) * 2021-08-18 2021-12-14 华中科技大学 Device and method for detecting hydrostatic performance of ship model in any floating state

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