CN209118578U - A kind of deformable fluctuation wall surface device - Google Patents
A kind of deformable fluctuation wall surface device Download PDFInfo
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- CN209118578U CN209118578U CN201821481375.4U CN201821481375U CN209118578U CN 209118578 U CN209118578 U CN 209118578U CN 201821481375 U CN201821481375 U CN 201821481375U CN 209118578 U CN209118578 U CN 209118578U
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Abstract
The utility model discloses a kind of deformable fluctuation wall surface device, no less than 5 groups of driving telecontrol equipment being arranged in parallel in including braced frame and along braced frame length direction in braced frame, every group of driving telecontrol equipment includes motor, worm screw, worm screw support base, worm gear, central axis, cylindrical cam, shank, support spring, plate and flexible rubber plate, it is rotated by motor and drives worm screw rotation, worm and wheel engagement, worm gear is driven to rotate around center axis, and then drive cylindrical cam rotation, shank in the annular groove of the scarf of cylindrical cam then moves up and down, the plate being attached thereto is driven to move up and down, the phase difference of adjacent cylindrical cam is set as 90 ° when because of installation, the flexible rubber plate being thus pasted together with plate occurs to be similar to sinusoidal wavy swing.The device is put in the sink, and trace particle and particle image velocimetry camera are combined with, and can intuitively obtain the distribution in fluctuation near wall flow field, easy to operate.
Description
Technical field
The utility model relates to wavy swing fields, and in particular to a kind of deformable fluctuation wall surface device.
Background technique
The high speed that fish move in water and its mode of moving about are closely related, and wavy swing is used as the most common trip of fish
Flowing mode can effectively inhibit turbulent flow, reduce viscous drag suffered by surface.The drag reduction mechanism for studying wavy swing at present is most
By numerical simulation, model is established according to the structure of fish and wave characteristic, passes through its information of flow of numerical Analysis.But by
In the wavy complexity for swinging fluid mechanic model, it is concluded that there is still a need for by its accuracy of experimental verification, then by
Particle Image Velocimetry is intuitive to see the Flow Field Distribution near experimental model.Fluctuation wall surface device is mostly that cam drives at present
Motivation structure or push rod driving mechanism, wall surface are mostly that rectangular element hingedly forms, and the continuity of curved surface has certain limitation, and bent
The fluctuation wavelength regulation in face is more difficult.Therefore the deformable fluctuation wall surface device pair of a vibration frequency and Wavelength tunable is designed
There is certain positive effect in the drag reduction mechanism research of the wavy swing of fish.
Utility model content
Influence for researching fish travelling to flow field around, for the wavy swing of fish, the utility model one kind can
The fluctuation wall surface device of deformation, the device can make undulatory motion under driving assembly effect in water, fluctuate wall surface by adjusting
Driving assembly, thus it is possible to vary the vibration frequency and wavelength of wall surface, be combined with trace particle and particle image velocimetry camera etc. stream
Field display device can intuitively obtain the distribution in fluctuation near wall flow field, easy to operate.
The purpose of this utility model is realized by following technical solution:
A kind of deformable fluctuation wall surface device, which is characterized in that the device includes braced frame and long along braced frame
Degree direction is arranged in parallel in no less than 5 groups of driving telecontrol equipment in braced frame；
The braced frame includes front side board, back side panel, upper bearing (metal) support frame, lower bearing support frame and spring supporting
Frame, is fixed by the connecting rod connection at the top of the front side board and back side panel, on the back side panel along side plate length direction
Three parallel sliding slots are offered, one end of the upper bearing (metal) support frame, lower bearing support frame and spring bracing is successively divided
It is not fixed on the sliding slot, the other end of the upper bearing (metal) support frame, lower bearing support frame and spring bracing is distinguished
Offer the first circular through hole, the second circular through hole and third circular through hole；
The driving telecontrol equipment include motor, worm screw, worm screw support base, worm gear, central axis, cylindrical cam, shank,
Support spring, plate and flexible rubber plate, the motor and the worm screw support base are each attached on the back side panel,
And the rotation axis of the motor is connected with the worm screw, the central axis is arranged vertically, the upper end of the central axis
Across the first circular through hole of the upper bearing (metal) support frame, and it is rotatably supported on the upper bearing (metal) support frame, institute
The lower end for the central axis stated passes through the second circular through hole of the lower bearing support frame, and be rotatably supported at it is described under
On bearing supporting frame, the worm gear is arranged the top for being fixed on the central axis, and the worm and worm wheel are engaged and passed
Dynamic, the cylindrical cam is arranged the lower part for being fixed on the central axis；It is provided with annular groove on the cylindrical cam,
The shank passes through the third circular through hole on the spring bracing, and one end is fixed in the annular groove, separately
One end is fixed with the plate, and the flexible rubber plate is fixed on the lower surface of the plate；The support spring
Both ends be respectively supported between the shaft shoulder and the spring bracing of the shank；
No less than 5 groups of the driving telecontrol equipment shares same worm screw and flexible rubber plate.
Further, the cylindrical cam is the hollow cylindrical shape for having certain wall thickness, the lower end surface of the cylinder
For scarf, the annular groove is opened up on the scarf.
Further, the second circular through hole of the lower bearing support frame is step through-hole.
Further, the upper bearing (metal) support frame, lower bearing support frame the other end be opening circular ring structure, i.e., by
Two opposite semicircular ring compositions, and the open outer side is provided with protrusion.
Further, the lower end surface of the shaft shoulder of the shank offers shaft shoulder groove, on the spring bracing
Third circular through hole is step through-hole, and the upper end of the support spring is supported in the shaft shoulder groove, lower end support
On the step of third circular through hole.
Further, the worm gear and cylindrical cam pass through the shaft shoulder of central axis or circlip for shaft carries out axially
Positioning.
Further, the flexible rubber plate is pasted onto the lower surface of the plate.
Further, the installation site phase difference of cylindrical cam adjacent in the driving telecontrol equipment of the no less than group
For °.
Further, the both ends of the central axis pass through tapered roller bearing to be respectively supported on described first round logical
In hole and the second circular through hole.
Further, the lower end of the shank is threadedly coupled with the plate, and the lower end of the shank does not surpass
The lower surface of the plate out.
The beneficial effects of the utility model are as follows:
The deformable fluctuation wall surface device of the utility model can make undulatory motion under driving assembly effect in water, lead to
Overregulate the driving assembly of fluctuation wall surface, thus it is possible to vary the vibration frequency and wavelength of wall surface are combined with trace particle and particle figure
As stream field displaying apparatus such as speed detecting cameras, the distribution in fluctuation near wall flow field can be intuitively obtained, it is easy to operate.
Detailed description of the invention
Fig. 1 is the left view for fluctuating wall surface device；
Fig. 2 is the main view for fluctuating wall surface device；
Fig. 3 is the cross-sectional view of lower bearing installation；
Fig. 4 is the top view of upper bearing (metal) support frame installation；
Fig. 5 is the structure chart of spring installation；
Fig. 6 is the structure chart that shank is connect with plate；
In figure, braced frame 1, driving telecontrol equipment 2, transparent sink 3, particle image velocimetry camera 4, front side board 1-1, after
Side plate 1-2, upper bearing (metal) support frame 1-3, lower bearing support frame 1-4, spring bracing 1-5, connecting rod 1-6, motor 2-1, worm screw
2-2, worm screw support base 2-3, worm gear 2-4, central axis 2-5, cylindrical cam 2-6, shank 2-7, support spring 2-8, plate 2-9,
Flexible rubber plate 2-10, upper end tapered roller bearing 2-11, lower end cone stick bearing 2-12, the first circlip for shaft 2-
13, the second circlip for shaft 2-14, third circlip for shaft 2-15, the 4th circlip for shaft 2-16, the 5th axis bullet
Property retaining ring 2-17, shaft coupling 2-18.
Specific embodiment
The utility model is described in detail below according to attached drawing and preferred embodiment, the purpose of this utility model and effect will become
It must be more clearly understood that, below in conjunction with drawings and examples, the present invention will be further described in detail.It should be appreciated that herein
Described specific embodiment is only used to explain the utility model, is not used to limit the utility model.
As shown in Figs. 1-2, a kind of deformable fluctuation wall surface device comprising braced frame 1 and along 1 length of braced frame
Direction is arranged in parallel in no less than 5 groups of driving telecontrol equipment 2 in braced frame；
Braced frame 1 includes front side board 1-1, back side panel 1-2, upper bearing (metal) support frame 1-3, lower bearing support frame 1-4 and bullet
Spring support frame 1-5, front side board 1-1 are fixedly connected with the both ends at the top of back side panel 1-2 by connecting rod 1-6, on back side panel 1-2
Three parallel sliding slots are offered along side plate length direction, equal length, the left end of three sliding slots is in same vertical line
On, and the bottom end of front side board 1-1 and back side panel 1-2 turn down outward, are conveniently placed in the plane of 3 two sides of transparent sink；Upper axis
The one end for holding support frame 1-3, lower bearing support frame 1-4 and spring bracing 1-5 is that screw thread is rod-shaped, successively distinguishes frame from top to bottom
It is located on three sliding slots, and is fixed on back side panel by inside and outside two locking nuts, adjusting lock nut may be implemented three
The step-less adjustment of the left-right position of support frame in a certain range；Upper bearing (metal) support frame 1-3, lower bearing support frame 1-4 it is another
End is opening circular ring structure, i.e., is made of two opposite semicircular rings, respectively the first circular through hole and the second circular through hole, and
Second circular through hole is step through-hole, and the open outer side of semicircular ring is provided with protrusion, when bearing is packed into opening circular ring structure
In after, by screw bolt and nut pass through protrusion on bolt hole, realize to the circumferentially fixed of bearing, as shown in Figure 4；Spring supporting
The other end of frame 1-5 offers the third circular through hole passed through for shank 2-7；
Driving telecontrol equipment 2 includes motor 2-1, worm screw 2-2, worm screw support base 2-3, worm gear 2-4, central axis 2-5, cylinder
Cam 2-6, shank 2-7, support spring 2-8, plate 2-9 and flexible rubber plate 2-10, motor 2-1 and worm screw support base 2-3 are equal
It is fixed on back side panel 1-2, and the output shaft of motor 2-1 is connected by shaft coupling 2-18 with worm screw 2-2, central axis 2-5 is vertical
Arrangement, the upper end of central axis 2-5 passes through the first circular through hole of upper bearing (metal) support frame 1-3, and passes through upper end cone stick bearing
2-11 is supported on upper bearing (metal) support frame 1-3, and the both ends of upper end cone stick bearing 2-11 pass through first axle elasticity gear respectively
It encloses 2-13 and the second circlip for shaft 2-14 and carries out axially position；The lower end of central axis 2-5 is across lower bearing support frame 1-4's
Third circular through hole, and be supported on lower bearing support frame 1-4 by lower end cone stick bearing 2-12, because of the second circular through hole
For step through-hole, the lower end of lower end cone stick bearing 2-12 is positioned by the step of the second circular through hole, and upper end passes through the
Five circlip for shaft 2-17 positioning, it is specific as shown in Figure 3；
Worm gear 2-4 is connected by key the top for being arranged and being fixed on central axis 2-5, and upper end passes through third circlip for shaft 2-
15 positioning, lower end are positioned by the shaft shoulder of central axis 2-5, and worm screw 2-2 and worm gear 2-4 engaged transmission, cylindrical cam 2-6 pass through key
Connection is arranged the lower part for being fixed on central axis 2-5, and both ends pass through the 4th circlip for shaft 2-16, the 5th axis elasticity gear respectively
2-17 positioning is enclosed, cylindrical cam 2-6 is the hollow cylindrical shape for having certain wall thickness, and the lower end surface of cylinder is scarf, scarf
On open up annular groove, shank 2-7 passes through the third circular through hole on spring bracing 1-5, and upper end is fixed in annular groove,
Lower end is threadedly coupled with plate 2-9, and the lower end of shank 2-7 avoids plate 2-9 and flexibility without departing from the lower surface of plate 2-9
Rubber slab 2-10 generates protrusion when affixed on wall surface；The lower end surface of the shaft shoulder of shank 2-7 offers shaft shoulder groove, spring supporting
Third circular through hole on frame 1-5 is step through-hole, and the upper end of support spring 2-8 is supported in the shaft shoulder groove, under
End is supported on the step of third circular through hole, as shown in Figure 5；Flexible rubber plate 2-10 is pasted onto the lower surface of plate 2-9, such as
Shown in Fig. 6.
No less than 5 groups of driving telecontrol equipment 2 shares same worm screw 2-2 and flexible rubber plate 2-10, no less than 5 groups of drive
The installation site phase difference of adjacent cylindrical cam 2-6 is 90 ° in dynamic telecontrol equipment 2.The upper surface of flexible rubber plate 2-10 is solid
More T-type shanks are connect, more pumping for T-type shank are changed into the undulatory motion of rubber slab.
In use, the deformable fluctuation wall surface device is erected in the transparent sink 3 being filled with water, and make flexible rubber plate
The upper and lower end faces of 2-10 are contacted with water, and the two sides of flexible rubber plate 2-10 are equal with the spacing of basin sidewall.Device operating
When, with respect to sink 3 horizontal displacement does not occur for flexible rubber plate 2-10, only makees the sine wave of up and down direction under driving assembly effect
It is dynamic.
Preferably, motor 2-1 is stepper motor, and shaft coupling 2-18 is positive coupling, on the scarf of cylindrical cam 2-6
Annular groove cross section be V-type.
Because motor 2-1 is stepper motor, therefore, adjustable revolving speed, to realize the quantitative adjustable of wall surface vibration frequency.
Particle image velocimetry camera 4 can measure the flow velocity of particle, be arranged in the left side of transparent sink 3, by measuring signal input controller,
Flow Field Distribution around available flexible rubber plate.
Driving telecontrol equipment 2 can adjust left-right position in the horizontal elongated slot with shelf junction, and the wavelength of fluctuation depends on
In the gap size of driving telecontrol equipment 2.In cylindrical cam 2-6 rotation process, the variation meeting up and down of the spatial position at V-groove bottom
Shank is driven to pump.Scarf is plane, and the movement velocity of driven member upward or downward is constant.
Upper bearing (metal) support frame 1-3, lower bearing support frame 1-4, spring bracing 1-5 can be adjusted in the horizontal elongated slot of shelf
Left-right position is saved, the step-less adjustment of fluctuation wavelength in a certain range is realized.The installation site of shank 2-7 is fixed, and snail is adjusted
Wheel 2-4 can change the initial contact location of cylindrical cam 2-6 Yu shank 2-7 with the position engaged worm screw 2-2, make to operate phase
The cylindrical cam 2-6 phase difference of adjacent component is different.
The course of work of the deformable fluctuation wall surface device of the utility model is as follows:
Motor 2-1 rotation drives worm screw 2-2 rotation by shaft coupling 2-18, and worm screw 2-2 is engaged with worm gear 2-4, is driven each
Worm gear 2-4 in group driving telecontrol equipment is rotated around central axis 2-5, and then cylindrical cam 2-6 is driven to rotate around central axis 2-5,
Shank in the annular groove of the scarf of cylindrical cam 2-6 then moves up and down, and drives the plate 2-9 or more being attached thereto
Movement, the phase difference of adjacent cylindrical cam 2-6 is set as 90 °, thus the flexible rubber being pasted together with plate 2-9 when because of installation
Offset plate 2-10 occurs to be similar to sinusoidal wavy swing, and the driving assembly that five groups of phase differences are 90 ° can realize a cycle
Sinusoidal fluctuation.Water in sink flows to rear end from the front end of rubber slab, and showing for Flow visualisation is added in sink medium
Track particle is simulated the travelling of fish in water by the relative motion of flexible rubber plate 2-10 and water flow, is surveyed by particle picture
Fast camera 4 handles the signal data input controller measured, obtains the Flow Field Distribution of fluctuation wall peripheral, controls motor
The adjustable fluctuation wall surface vibration frequency of 2-1 revolving speed, will handle available different situations in the signal input controller measured
Under fluctuation wall peripheral Flow Field Distribution situation.
Because the structure of driving telecontrol equipment is identical, when needing the Fluctuation test in multiple periods, it is only necessary to change in device
The quantity of driving assembly, installation and removal are convenient, easy to operate.The period that fluctuation wall surface can be set is several, takes fluctuation
The experimental data in wall surface middle section is handled, and the accuracy of experimental result is improved.When needing to carry out the not equal Fluctuation test of amplitude
When, it is only necessary to replacing cylindrical cam 2-6 can meet the requirements, and adjacent cylindrical cam 2-6 size is different, flexible rubber plate 2-
10 can make amplitude not equal fluctuation, can simulate the experiment of the luffing sinusoidal fluctuation of some fish.
It will appreciated by the skilled person that the foregoing is merely the preferred embodiments of utility model, and do not have to
In limitation utility model, although utility model is described in detail referring to previous examples, for those skilled in the art
Member for, can still modify to the technical solution of aforementioned each case history, or to part of technical characteristic into
Row equivalent replacement.With within principle, modification, equivalent replacement for being made etc. should be included in practical new all spirit in utility model
Within the protection scope of type.
Claims (10)
1. a kind of deformable fluctuation wall surface device, which is characterized in that the device includes braced frame (1) and along braced frame
(1) length direction is arranged in parallel in no less than 5 groups of driving telecontrol equipment (2) in braced frame；
The braced frame (1) includes front side board (1-1), back side panel (1-2), upper bearing (metal) support frame (1-3), lower bearing support
The top of frame (1-4) and spring bracing (1-5), the front side board (1-1) and back side panel (1-2) is solid by connecting rod (1-6)
It is fixed to connect, three parallel sliding slots, the upper bearing (metal) branch are offered along side plate length direction on the back side panel (1-2)
One end of support (1-3), lower bearing support frame (1-4) and spring bracing (1-5) is successively separately fixed on the sliding slot,
The other end of the upper bearing (metal) support frame (1-3), lower bearing support frame (1-4) and spring bracing (1-5) offers respectively
First circular through hole, the second circular through hole and third circular through hole；
The driving telecontrol equipment (2) include motor (2-1), worm screw (2-2), worm screw support base (2-3), worm gear (2-4), in
Mandrel (2-5), cylindrical cam (2-6), shank (2-7), support spring (2-8), plate (2-9) and flexible rubber plate (2-10),
The motor (2-1) and the worm screw support base (2-3) are each attached on the back side panel (1-2), and the electricity
The rotation axis of machine (2-1) is connected with the worm screw (2-2), and the central axis (2-5) is arranged vertically, the central axis
The upper end of (2-5) passes through the first circular through hole of the upper bearing (metal) support frame (1-3), and is rotatably supported at described upper
On bearing supporting frame (1-3), the lower end of the central axis (2-5) passes through the second circle of the lower bearing support frame (1-4)
Shape through-hole, and be rotatably supported on the lower bearing support frame (1-4), the worm gear (2-4), which is arranged, is fixed on institute
The top for the central axis (2-5) stated, and the worm screw (2-2) and worm gear (2-4) engaged transmission, the cylindrical cam (2-
6) it is arranged the lower part for being fixed on the central axis (2-5)；It is provided with annular groove on the cylindrical cam (2-6), it is described
Shank (2-7) pass through the third circular through hole on the spring bracing (1-5), one end is fixed on the annular groove
Interior, the other end and the plate (2-9) are fixed, and the flexible rubber plate (2-10) is fixed on the plate (2-9)
Lower surface；The both ends of the support spring (2-8) be respectively supported at the shank (2-7) the shaft shoulder and the spring branch
Between support (1-5)；
No less than 5 groups of the driving telecontrol equipment (2) shares same worm screw (2-2) and flexible rubber plate (2-10).
2. deformable fluctuation wall surface device according to claim 1, which is characterized in that the cylindrical cam (2-6)
To there is the hollow cylindrical shape of certain wall thickness, the lower end surface of the cylinder is scarf, is opened up on the scarf described
Annular groove.
3. deformable fluctuation wall surface device according to claim 1, which is characterized in that the lower bearing support frame
Second circular through hole of (1-4) is step through-hole.
4. deformable fluctuation wall surface device according to claim 3, which is characterized in that the upper bearing (metal) support frame
The other end of (1-3), lower bearing support frame (1-4) is opening circular ring structure, i.e., is made of two opposite semicircular rings, and institute
The open outer side stated is provided with protrusion.
5. deformable fluctuation wall surface device according to claim 3, which is characterized in that the axis of the shank (2-7)
The lower end surface of shoulder offers shaft shoulder groove, and the third circular through hole on the spring bracing (1-5) is step through-hole, institute
The upper end for the support spring stated is supported in the shaft shoulder groove, and lower end is supported on the step of third circular through hole.
6. deformable fluctuation wall surface device according to claim 1, which is characterized in that the worm gear (2-4) and circle
Column cam (2-6) carries out axially position by the shaft shoulder or circlip for shaft of central axis (2-5).
7. deformable fluctuation wall surface device according to claim 1, which is characterized in that the flexible rubber plate (2-
10) it is pasted onto the lower surface of the plate (2-9).
8. deformable fluctuation wall surface device according to claim 1, which is characterized in that no less than 5 groups of the drive
The installation site phase difference of adjacent cylindrical cam (2-6) is 90 ° in dynamic telecontrol equipment (2).
9. deformable fluctuation wall surface device according to claim 1, which is characterized in that the central axis (2-5)
Both ends pass through tapered roller bearing respectively and are supported in first circular through hole and the second circular through hole.
10. deformable fluctuation wall surface device according to claim 1, which is characterized in that under the shank (2-7)
End is threadedly coupled with the plate (2-9), and the lower end of the shank (2-7) is without departing under the plate (2-9)
Surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821481375.4U CN209118578U (en) | 2018-09-11 | 2018-09-11 | A kind of deformable fluctuation wall surface device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821481375.4U CN209118578U (en) | 2018-09-11 | 2018-09-11 | A kind of deformable fluctuation wall surface device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036031A (en) * | 2018-09-11 | 2018-12-18 | 浙江工业大学 | A kind of deformable fluctuation wall surface device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036031A (en) * | 2018-09-11 | 2018-12-18 | 浙江工业大学 | A kind of deformable fluctuation wall surface device |
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