CN109520401A - A kind of deformation device and its resistance measurement device of imitative mantis shrimp body surface non-smooth surface - Google Patents
A kind of deformation device and its resistance measurement device of imitative mantis shrimp body surface non-smooth surface Download PDFInfo
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- CN109520401A CN109520401A CN201811454393.8A CN201811454393A CN109520401A CN 109520401 A CN109520401 A CN 109520401A CN 201811454393 A CN201811454393 A CN 201811454393A CN 109520401 A CN109520401 A CN 109520401A
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- 241001275767 Stomatopoda Species 0.000 title claims abstract description 26
- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 60
- 239000012528 membrane Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 9
- 239000011553 magnetic fluid Substances 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 238000010992 reflux Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011664 nicotinic acid Substances 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 241001481833 Coryphaena hippurus Species 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005308 flint glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a kind of deformation devices of imitative mantis shrimp body surface non-smooth surface, deformation device includes the end cap successively arranged from left to right, several first skeletons, several second skeletons, the lower end of leftmost first skeleton and leftmost second skeleton is fixedly connected on bracket, end cap is fixedly connected with leftmost second skeleton by connector, between end cap and leftmost first skeleton, between two neighboring first skeleton, a closed cavity is formed after being connected between first skeleton of rightmost and leftmost second skeleton and between two neighboring second skeleton by rubber membrane, the first electric pushrod and the second electric pushrod are also installed between two neighboring second skeleton, first electric pushrod is located at the top of the second electric pushrod.Resistance measurement device includes Hydraulic Circulation device, test device and above-mentioned deformation device；Deformation device is mounted in the test chamber of Hydraulic Circulation device, and the bracket of deformation device is connected with the test lead of test device.
Description
Technical field
The present invention relates to a kind of fluid resistance test device, specifically a kind of change of imitative mantis shrimp body surface non-smooth surface
Shape dress is set and its resistance measurement device.
Background technique
Friction is one of energy loss major way, and in high-speed motion, frictional resistance accounts for about 40% of drag overall or so,
The 70%-80% of resistance suffered by object of which movement is caused by skin friction resistance in water.How reducing friction resistance
The always emphasis of domestic and foreign scholars' research, drag reduction method has bionic, non-smooth wall surface drag reduction technology, flexible surface so far
Drag reduction technology, surface covering drag reduction technology, Friction Reduction by Micro-bubbles technology, drag reduction by polymer technology and jet flow drag reduction technology etc.,
Wherein bionic, drag-reducing is a very popular at present research direction.Evolution in millions upon millions of years evolves many exquisite structures,
Such as the scale and gill portion, the flexible surface of dolphin, the groove structure of earthworm and the deformation groove structure of mantis shrimp etc. of shark,
These structures have good enlightenment for Research of Drag Reduction.Mantis shrimp is to hide natural enemy, can optimize the structure of body, meet
Danger is got rid of to when danger the cracking speed of acquisition can be swung by the continuous uromere at the second half section position of its body, therefore can
It is tested with putting into the deformation wall surface of this flexural oscillations, examines whether to can aid in resistance when reducing underwater travelling.
People, in order to grasp more accurate mechanism, record its drag reduction when using various novel drag reduction technologies
Effect needs to be tested by some high-end devices, surveys resistance and generally uses water hole, wind-tunnel and sink arrangement, but these
The cost of device is all high, mechanism is complicated, takes up a large area, and the flow field of experiment is difficult to simulate, and experimental period is long, has very big
Limitation.Therefore need to design that research and development one are small-sized, test dress cheap, easy to operate, that can test deformation wall surface
Setting seems especially crucial, is of great significance for Research of Drag Reduction.
Summary of the invention
Take up an area that big, at high cost, cumbersome, easily assembling, function are limited etc. for existing fluid resistance test device
Problem, the invention proposes the deformation devices and its resistance measurement device of a kind of imitative mantis shrimp body surface non-smooth surface.
The technical solution adopted in the present invention is as follows: a kind of deformation device of imitative mantis shrimp body surface non-smooth surface, the change
Shape dress sets end cap, several first skeletons, several second skeletons including successively arranging from left to right, leftmost first skeleton and
The lower end of leftmost second skeleton is fixedly connected on bracket, and end cap is fixed with leftmost second skeleton by connector
Connection, between end cap and leftmost first skeleton, between two neighboring first skeleton, the first skeleton and Far Left of rightmost
The second skeleton between and two neighboring second skeleton between by rubber membrane be connected after formed a closed cavity, it is adjacent
First electric pushrod and the second electric pushrod are also installed, the first electric pushrod is located at the second electric pushrod between two the second skeletons
Top.
Further, first skeleton is by the first lower catch hoop and the first front band being fixedly connected on the first lower catch hoop
Composition, second skeleton are made of the second lower catch hoop and the second front band being fixedly connected on the second lower catch hoop.
Further, the first lower catch hoop semicircular in shape, first front band are in half elliptic；Described second lower card
Hoop and the second front band are in the different half elliptic of minor axis length.
Further, the first front band on several first skeletons from left to right half elliptic minor axis length gradually
It is gradually reduced again after increase；The second lower catch hoop and the second front band on several second skeletons from left to right half elliptic
Minor axis length is gradually reduced.
It further, further include the several first fixed groove seats and several second fixed groove seats, described first fixes groove seat
Top half is half elliptic, lower half portion is semicircle, and Rubber membrane cover is rear outside the first fixed groove seat to pass through engaging company up and down
Connecing the first front band and the first lower catch hoop is fixed on rubber membrane in the first fixed groove seat；Described second fixes the upper and lower of groove seat
Half portion is divided into the different half elliptic of minor axis length, Rubber membrane cover outside the second fixed groove seat after by being connected together second up and down
Front band and the second lower catch hoop are fixed on rubber membrane in the second fixed groove seat.
Further, tail portion contractibility is connected on the second skeleton of the rightmost；Preferably, the tail portion contractibility
Inner hollow, radial section are short axle and the ellipse that long axis gradually decreases.
It is a further object of the present invention to provide a kind of resistance measurement devices of imitative mantis shrimp body surface non-smooth surface, including waterpower
Circulator, test device and above-mentioned deformation device；The test that the deformation device is mounted on Hydraulic Circulation device is held
In device, the bracket of deformation device is connected with the test lead of test device.
Further, the test device includes tension sensor and fixing rack for sensor, one end of tension sensor with
Bracket is fixedly connected, and one end of tension sensor is fixedly connected with fixing rack for sensor, and fixing rack for sensor and test chamber are solid
Fixed connection.
Further, the Hydraulic Circulation device includes motor, pump, ball valve, test chamber, butterfly valve, sink, the motor
Power is provided for pump, the water inlet of pump is passed through sink, and the water outlet of pump is sequentially communicated entering for ball valve, honeycomb screen and test chamber
Mouthful, the outlet of test chamber is sequentially communicated butterfly valve and sink, and the bracket of the deformation device is arranged in test chamber.
Further, through-hole is provided on the test chamber, end cap is arranged on through-hole, and magnetic is carried out between through-hole and end cap
Fluid Sealing.
The beneficial effects of the present invention are: small in size, compact-sized simple, required at low cost, easy to operate, experimental performance
By force, not by surrounding test environmental restrictions the advantages that, can satisfy every test requirements document during test；Deformation device can be real
It is now bent, extends and shorten and extend bending, to realize motion process when simulation mantis shrimp travelling；The design of tail portion contractibility
Fluid local losses can be prevented excessive, influence the accuracy of test data；Whole device realizes recycling for water, guarantees examination
It tests whole environment friendly and pollution-free.The resistance measurement device be one kind have test underwater environment in non-smooth surface under different shape
Resistance measurement device.
Detailed description of the invention
Fig. 1 is the main view of resistance measurement device of the invention；
Fig. 2 is the cross-sectional view of deformation device of the present invention；
Fig. 3 is the A-A sectional view of Fig. 1；
Fig. 4 is enlarged drawing at the I of Fig. 2；
Fig. 5 is the B-B cross-sectional view of Fig. 2；
Fig. 6 is enlarged drawing at the III of Fig. 1；
Fig. 7 is magnetic fluid sealing structure figure；
Fig. 8 is enlarged drawing at the II of Fig. 1；
In figure: motor 1, shaft coupling 2, pump 3, ball valve 4, adapter tube 5, diffuser adapter tube 6, supporting section adapter tube 7, adapter tube support frame
8, contraction section adapter tube 9, honeycomb screen 10, magnetic fluid sealing structure 11, deformation device 12, test chamber 13, rear diffuser adapter tube 14,
Butterfly valve 15, control section adapter tube 16, square 90 ° of pipes 17, reflux section adapter tube 18, reflux section support frame 19, sink 20, test platform
21, display screen 22, tension sensor 23, sensor support frame 24, pump water inlet pipe 25, circlip for hole 11-1, pole shoe 11-2,
Permanent magnet 11-3, adjustment gasket 11-4, the first lower catch hoop 12-1, connector 12-2, end cap 12-3, fixed ring 12-4, rubber
Film 12-5, the first front band 12-6, the first fixed groove seat 12-7, the second front band 12-8, the second fixed groove seat 12-9, the first electricity
Dynamic push rod 12-10, push rod hold-down support 12-11, tail portion contractibility 12-12, the second electric pushrod 12-13, the second lower catch hoop 12-
14, idler wheel 12-15, bracket 12-16, lower case 13-1, observation luffer boards 13-2, upper housing 13-3.
Specific embodiment
Specific implementation process of the invention is further illustrated with reference to the accompanying drawing.
As shown in Fig. 2, a kind of deformation device of imitative mantis shrimp body surface non-smooth surface, the upper surface shape of whole deformation device 12
Shape be similar to mantis shrimp upper surface, the deformation device include the end cap 12-3 successively to arrange from left to right, several first skeletons,
The lower end of several second skeletons, leftmost first skeleton and leftmost second skeleton is fixedly connected on bracket, end cap
12-3 is fixedly connected with leftmost second skeleton by connector 12-2, between end cap 12-3 and leftmost first skeleton,
Between two neighboring first skeleton, between the first skeleton of rightmost and leftmost second skeleton and two neighboring second bone
A closed cavity is formed after being connected between frame by rubber membrane 12-5, and the first electricity is also installed between two neighboring second skeleton
Dynamic push rod 12-10 and the second electric pushrod 12-13, the first electric pushrod 12-10 is located at the top of the second electric pushrod 12-13.
Further technical solution is that first skeleton connects by the first lower catch hoop 12-1 and by the way that screw bolt and nut is fixed
The first front band 12-6 composition on the first lower catch hoop 12-1 is connect, shares 6 groups, the section of leftmost first lower catch hoop 12-1
Shape is rectangle so that it is convenient to be fixed on bracket, remaining is semicircle, for simulating the surface shape of mantis shrimp, ties measurement
Fruit is more accurate, is placed in the semicircle groove opened up on bracket；Second skeleton is by the second lower catch hoop 12-14 and passes through spiral shell
Screw bolt and nut is fixedly connected on the composition of the second front band 12-8 on the second lower catch hoop 12-14, shares 8 groups, and leftmost second
The cross sectional shape of lower catch hoop 12-14 is rectangle so that it is convenient to be fixed on bracket.
Further embodiment is the first lower catch hoop 12-1 semicircular in shape, and the first front band 12-6 is in semiellipse
Shape；The half elliptics second lower catch hoop 12-14 and the second front band 12-8 different in minor axis length.
Further embodiment is, the from left to right half elliptic of the first front band 12-6 on several first skeletons it is short
Shaft length is gradually reduced again after being gradually increased；The second lower catch hoop 12-14 and the second front band 12- on several second skeletons
The minor axis length of 8 from left to right half elliptics is gradually reduced, and the variation of minor axis length makes the upper surface of deformation device 12 more
Close to the curved shape in mantis shrimp upper surface.
Further embodiment be further include the several first fixed groove seat 12-7 and several second fixed groove seat 12-9, it is described
The top half of first fixed groove seat 12-7 is half elliptic, lower half portion is semicircle, and rubber membrane 12-5 covers fixed first
Rubber membrane 12-5 is fixed on by the first front band 12-6 and the first lower catch hoop 12-1 that is connected together up and down after outside groove seat 12-7
On first fixed groove seat 12-7；The upper and lower half of described second fixed groove seat 12-9 is divided into the different half elliptic of minor axis length,
Rubber membrane 12-5 passes through be connected together up and down the second front band 12-8 and the second lower catch hoop after covering outside the second fixed groove seat 12-9
12-14 is fixed on rubber membrane 12-9 on the second fixed groove seat 12-9.
Further embodiment is to be connected with tail portion contractibility by bolts and nuts on the second skeleton of the rightmost
12-12；Preferably, the tail portion contractibility 12-12 inner hollow, radial section is short axle and long axis gradually decrease it is ellipse
Circle, mainly reduction fluid local losses, influence measuring accuracy, as shown in Figure 5.
First electric pushrod 12-10 and the second electric pushrod 12-13 are also installed between two neighboring second skeleton, the
One electric pushrod 12-10 is located at the top of the second electric pushrod 12-13, and more detailed scheme is: the second fixed groove seat 12-9 is adopted
Pacified respectively with the place up and down of the structure of non-hollow, the radial wall surface right side of the fixed groove seat 12-9 of the second of first to the 7th
The first electric pushrod 12-10 and the second electric pushrod 12-13 are filled, in the radial direction of second to the 8th second fixed groove seat 12-9
Each welding push rod hold-down support 12-11 in the place up and down of wall surface left side, the first electric pushrod 12-10 and the second electric pushrod 12-
13 push rod top is all with push rod hold-down support 12-11 by pin connection, as shown in Figure 4.
Connector 12-2 connection end cap 12-3 and leftmost second fixed groove seat 12-9, connector 12-2 is for fixed branch
Support the left deformed part of deformation device 12.
The present invention also provides a kind of resistance measurement devices of imitative mantis shrimp body surface non-smooth surface, including Hydraulic Circulation to fill
It sets, test device and above-mentioned deformation device；The deformation device is mounted in the test chamber of Hydraulic Circulation device, is become
The bracket that shape dress is set is connected with the test lead of test device.
Further embodiment is, in conjunction with attached drawing 1, the Hydraulic Circulation device includes motor 1, pump 3, ball valve 4, test chamber
13, butterfly valve 15, sink 20, the motor 1 are that pump 3 provides power, and the water inlet for pumping 3 is passed through sink 20, pump 3 water outlet successively
It is connected to the entrance of ball valve 4, honeycomb screen 10 and test chamber 13, the outlet of test chamber 13 is sequentially communicated butterfly valve 15 and sink
20, the bracket of the deformation device is arranged in test chamber 13.More specific scheme is:
Motor 1 is that pump 3 provides power, and motor 1 is connect with pump 3 by shaft coupling 2, and 3 water inlet and pump water inlet pipe 25 are pumped
By flanged joint, the water inlet of pump water inlet pipe 17 is passed through sink 20, pumps 3 water outlet and is connect by flange with adapter tube 5, adapter tube
Mounting ball valve 4 on 5 are used for Control experiment flow, and the water outlet of adapter tube 5 is connect by 90 ° of elbows with 6 one end of diffuser adapter tube,
The other end and supporting section adapter tube 7 of diffuser adapter tube 6 pass through flanged joint, the water outlet and contraction section adapter tube 9 of supporting section adapter tube 7
Connection, 9 left side constriction shape of contraction section adapter tube are truncated cone-shaped, and the remaining part in the right is cuboid, right end and honeycomb screen 10
And the flanged joint of test chamber 13, the effect of honeycomb screen 10 are to reduce the energy loss of fluid, make shape in test chamber 13
At a uniform flow field, test chamber 13 is installed on test platform 21, and water outlet is connect with rear diffuser adapter tube 14, after
The other end and control section adapter tube 16 of diffuser adapter tube 14 install butterfly valve 15 by flanged joint on control section adapter tube 16, use
In the fluid flow of control outflow, the other end of control section adapter tube 16 is connect with square 90 ° of pipes 17, under square 90 ° of pipes 17
End is connect with 18 upper end of reflux section adapter tube, and 18 lower end of reflux section adapter tube is protruded into sink 20, forms the water route of a circulation.
In conjunction with attached drawing 1, test chamber 13 is described in detail in attached drawing 3: test chamber 13 include lower case 13-1,
Luffer boards 13-2 and upper housing 13-3 is observed, lower case 13-1 is in the lower end of entire test chamber 13, and upper housing 13-3 is in upper end, and two
Side is fixedly connected with observation luffer boards 13-2 by bolts and nuts, and the enclosure space only exported with entrance, lower casing are formed
Body 13-1 is stepped shape, is made of two horizontal planes and a vertical plane, the height phase of vertical plane height and deformation device 12
Deng, when water flow from left end horizontal plane flow into when, can directly be contacted with the upper surface of deformation device 12, prevent because pipeline it is unexpected
Expand and cause unnecessary local losses, influences measurement result, be provided with through-hole on vertical plane, for installing deformation device 12,
The end cap 12-3 and fixed ring 12-4 of deformation device 12 pass through the through-hole of lower case 13-1, in through-hole inner end and end cap 12-3 and admittedly
Determine the outer end installation magnetic fluid sealing structure 11 of ring 12-4, deformation device 12 is rest directly upon on the low level lower case 13-1,
Observing luffer boards 13-2 material is flint glass, for observing the deformation process of deformation device 12.In order to reduce the influence of frictional force,
Idler wheel 12-15 is installed in the lower end bracket 12-16, idler wheel 12-15 is contacted with lower case 13-1.
The test device includes tension sensor 23 and fixing rack for sensor 24, one end of tension sensor 23 and bracket
It is fixedly connected, one end of tension sensor 23 is fixedly connected with fixing rack for sensor 24, fixing rack for sensor 24 and test chamber
It is fixedly connected.It is specific: lower case 13- being passed through by screw bolt and nut in conjunction with the right end of attached drawing 1, attached drawing 8, tension sensor 23
1 connect with bracket 12-16, and left end is connect with fixing rack for sensor 24, and 24 global shape of fixing rack for sensor is spill, directly welds
It connects on the vertical plane of lower case 13-1, by connection, display screen 22 is mounted directly for tension sensor 23 and display screen 22
On test platform 21.
In conjunction with attached drawing 1, attached drawing 6 and attached drawing 7, auxiliary device is described in detail: 8 upper end of adapter tube support frame and branch
It supports section adapter tube 8 to connect, reflux section support frame 19 installs display screen 22 and examination on test platform 21 for fixing reflux section adapter tube 18
Container 13 is tested, magnetic fluid is installed in the outer end of the through-hole inner end on lower case 13-1 vertical plane and end cap 12-3 and fixed ring 12-4
Sealing structure 11, magnetic fluid sealing structure include circlip for hole 11-1, pole shoe 11-2, permanent magnet 11-3 and adjusting pad
In the through-hole of the fixed lower case 13-1 of piece 11-4, permanent magnet 11-3, two pole shoe 11-2 are arranged on the two sides permanent magnet 11-3,
And magnetic fluid sealing structure 11 by magnetic fluid formed ring packing gap, adjustment gasket 11-4 embedded in pole shoe 11-2 outer wall with
Between lower case 13-1 through-hole one end, prevent from leaking between pole shoe 11-2 and installation through-hole, circlip for hole 11-1 is mounted on
The lower case 13-1 through-hole other end, for positioning fixed pole shoe 11-2, magnetic fluid sealing structure advantage:, can in reasonable pressure
Realize zero leakage；The structure be it is non-contacting, because of through-hole on end cap 12-3 and lower case 13-1 vertical plane when preventing measurement
It directly contacts, influences measurement result.
The working principle of test device is: invention main medium is water, is also applied for other non-corrosive liquid mediums.
Deformation device 12 can realize that bending, elongation are shortened and three kinds of elongation bending deforms, and need to control first when realizing bending electronic
Push rod 12-10 elongation and the second electric pushrod 12-13 of control shorten, and realization elongation only needs to control first simultaneously electronic when shortening
Push rod 12-10 and the second electric pushrod 12-13 extends and shortens simultaneously, as long as realizing elongation bending the first electric pushrod of control
12-10 and the second electric pushrod 12-13 extends, but the elongation speed of the first electric pushrod 12-10 is greater than the second electric pushrod
12-13.When starting test, sink 20 is first store into full water, opens the butterfly valve 15 of the ball valve 4 and control section adapter tube 16 on adapter tube 5, then
Starting motor 1, the axis of motor 1 drives 3 pumps by shaft coupling 2, and water is pumped into pump water inlet pipe 25 from sink 20 by pressure difference by pump 3,
Pass through adapter tube 5, diffuser adapter tube 6, supporting section adapter tube 7, contraction section adapter tube 9 from the water outlet of pump 3, into test chamber 13, so
Afterwards by rear diffuser adapter tube 14, control section adapter tube 16, square 90 ° of pipes 17, reflux section adapter tube 18, sink 20 is eventually entered into,
Water circulation is formed, at this point, extending the first electric pushrod 12-10, shortens the second electric pushrod 12-13, forms bending, thus
Buckling phenomenon when mantis shrimp travelling is simulated, deformation device 12 is become by having one under the action of water along what water (flow) direction moved
Gesture, to have a pulling force to the stud being connected on bracket 12-16, pulling force is ultimately passed to tension sensor 23, passes through
The display screen 22 connecting with pressure sensor 23 can be measured by the first front band 12-6, the second front band 12-8 and rubber membrane
The deformation non-smooth surface that 12-5 is formed resistance suffered by bending deformation under a stream of water.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention also includes art technology
Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (10)
1. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface, which is characterized in that the deformation device includes from left to right
End cap, several first skeletons, several second skeletons for successively arranging etc., leftmost first skeleton and leftmost second skeleton
Lower end be fixedly connected on bracket, end cap is fixedly connected with leftmost second skeleton by connector, end cap with it is most left
Between first skeleton on side, between two neighboring first skeleton, between the first skeleton of rightmost and leftmost second skeleton
And between two neighboring second skeleton by rubber membrane be connected after formed a closed cavity, two neighboring second skeleton it
Between the first electric pushrod and the second electric pushrod are also installed, the first electric pushrod is located at the top of the second electric pushrod.
2. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface according to claim 1, which is characterized in that described
One skeleton is made of the first lower catch hoop and the first front band being fixedly connected on the first lower catch hoop, and second skeleton is by second
Lower catch hoop and the second front band being fixedly connected on the second lower catch hoop form.
3. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface according to claim 2, which is characterized in that described
One lower catch hoop semicircular in shape, first front band are in half elliptic；Second lower catch hoop and the second front band are long in short axle
Spend different half elliptics.
4. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface according to claim 3, which is characterized in that if described
The minor axis length of the first front band on dry first skeleton from left to right half elliptic is gradually reduced again after being gradually increased；If described
The minor axis length of the second lower catch hoop and the second front band on dry second skeleton from left to right half elliptic is gradually reduced.
5. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface according to claim 4, which is characterized in that further include
Several first fixed groove seats and several second fixed groove seats, the top half of the described first fixed groove seat is half elliptic, lower half
Part is semicircle, and Rubber membrane cover is rear outside the first fixed groove seat to pass through be connected together up and down the first front band and the first lower catch hoop
It is fixed on rubber membrane in the first fixed groove seat；The upper and lower half of described second fixed groove seat is divided into different half of minor axis length
Ellipse, Rubber membrane cover outside the second fixed groove seat after by being connected together the second front band up and down and the second lower catch hoop makes rubber
Film is fixed in the second fixed groove seat.
6. a kind of deformation device of imitative mantis shrimp body surface non-smooth surface according to claim 5, which is characterized in that it is described most
Tail portion contractibility is connected on second skeleton on the right；Preferably, the tail portion contractibility inner hollow, radial section are short
The ellipse that axis and long axis gradually decrease.
7. a kind of resistance measurement device of imitative mantis shrimp body surface non-smooth surface, which is characterized in that including Hydraulic Circulation device, test
Device and deformation device described in any one of claims 1-6；The deformation device is mounted on the examination of Hydraulic Circulation device
It tests in container, the bracket of deformation device is connected with the test lead of test device.
8. a kind of resistance measurement device of imitative mantis shrimp body surface non-smooth surface according to claim 1, which is characterized in that institute
Stating test device includes tension sensor and fixing rack for sensor, and one end of tension sensor is fixedly connected with bracket, and pulling force passes
One end of sensor is fixedly connected with fixing rack for sensor, and fixing rack for sensor is fixedly connected with test chamber.
9. a kind of resistance measurement device of imitative mantis shrimp body surface non-smooth surface according to claim 1, which is characterized in that institute
Stating Hydraulic Circulation device includes motor, pump, ball valve, test chamber, butterfly valve, sink, and the motor provides power for pump, pump into
The mouth of a river is passed through sink, and the water outlet of pump is sequentially communicated the entrance of ball valve, honeycomb screen and test chamber, the outlet of test chamber according to
The bracket of secondary connection butterfly valve and sink, the deformation device is arranged in test chamber.
10. a kind of resistance measurement device of imitative mantis shrimp body surface non-smooth surface according to claim 1, which is characterized in that
Through-hole is provided on the test chamber, end cap is arranged on through-hole, and magnet fluid sealing is carried out between through-hole and end cap.
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| CN110849581A (en) * | 2019-11-20 | 2020-02-28 | 浙江工业大学 | Deformation wall resistance testing device based on fish body surface structure |
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