CN110864872B - Deformation wall surface mechanism capable of being used for resistance test - Google Patents
Deformation wall surface mechanism capable of being used for resistance test Download PDFInfo
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- CN110864872B CN110864872B CN201911141587.7A CN201911141587A CN110864872B CN 110864872 B CN110864872 B CN 110864872B CN 201911141587 A CN201911141587 A CN 201911141587A CN 110864872 B CN110864872 B CN 110864872B
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- cam
- eccentric disc
- wall surface
- elastic element
- foot pad
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
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- 230000000996 additive effect Effects 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
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- 230000009182 swimming Effects 0.000 description 3
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- 238000010168 coupling process Methods 0.000 description 2
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- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a deformation wall surface mechanism for resistance testing, and relates to the technical field of resistance testing. The invention drives a group of eccentric disc cams with adjacent phase difference of 90 degrees on a cam shaft to rotate through a plum blossom type coupler by a stepping motor, the cam rollers connected with the eccentric disc cams do reciprocating motion in the vertical direction by the rotation of the eccentric disc cams, so that the elastic elements compress to transmit the motion of a threaded rod to a deformed wall surface, and the deformed wall surface connected with a first supporting plate and a second supporting plate can output sine waveforms due to the fact that the phases of the 5 eccentric disc cams are different. The mechanism has the advantages of simple operation, high efficiency and low cost, and can realize standard sinusoidal movement.
Description
Technical Field
The invention relates to the technical field of resistance testing, in particular to a deformation wall surface mechanism for resistance testing.
Background
Turbulence is a common flow pattern in fluid mechanics, viscous friction is prevalent at the interface of different fluids, and viscous forces at the solid-liquid interface are important factors for turbulence formation. With the continuous development of the current technology level, the performances of ships and underwater vehicles are increasingly perfect, and the number is also increasing. Therefore, how to effectively reduce the surface friction resistance of ships, underwater vehicles and the like has become a break for people to create new energy-saving technology. Marine organisms such as rays can utilize the body functions and the self structures of the marine organisms to exert the drag reduction performance to a great extent, not only can realize rapid swimming with extremely low resistance under water wantonly, but also the bodies are not attached by other marine organisms and microorganisms. Such low energy, high efficiency swimming modes are desirable for any underwater vehicle. The development of bionic and wall drag reduction technology requires that we understand and master physiological structures and internal motion mechanisms of fish, and realize low-resistance swimming to control the high efficiency of external flow. However, because the methods such as numerical simulation and fluid experiments have the defect of overlong period, and the similar simulation of the flow field of the actual marine environment is difficult to realize, many researches are only stopped at a theoretical level, and many existing hydrodynamic drag reduction technologies have not moved to the engineering field.
Disclosure of Invention
In view of the problems existing in the prior art, the invention aims to provide a deformation wall surface mechanism for resistance test, which has the advantages of simple operation, high efficiency, convenient disassembly and capability of realizing standard sinusoidal movement.
The utility model provides a deformation wall mechanism that can be used to resistance test, includes the motor, the motor right-hand member is equipped with a pair of bearing support, its characterized in that: the cam structure comprises a cam shaft, a group of eccentric disc cams with the adjacent phase difference of 90 degrees are arranged on the cam shaft so as to output sine waveforms, a group of cam rollers are arranged in a reciprocating mode in the vertical direction in a matched mode, each cam roller is fixed on a cam roller frame, an elastic element upper foot pad and an elastic element lower foot pad are arranged on each cam roller frame, each cam roller frame is connected with the elastic element lower foot pad, an elastic element is arranged between the elastic element upper foot pad and the elastic element lower foot pad, threaded rods are arranged on each elastic element upper foot pad, one end of each threaded rod is connected with the elastic element upper foot pad through a threaded tube, a deformation wall surface is arranged at the other end of each threaded rod, the deformation wall surface is connected with the other end of each threaded rod through a group of second support plates, each deformation wall surface comprises two wall surfaces, the connection positions of the two wall surfaces are fixed on the second support plates in the right center, the two ends of the deformation wall surface are provided with movable ends, and the second support plates corresponding to the two ends are fixed with the deformation wall surfaces through the first support plates.
The elastic elements are cylindrical springs, the upper foot pads of each elastic element are connected with the threaded pipe through hexagon head bolts, the lower foot pads of each elastic element are connected with the cam roller frame through hexagon head bolts and used for compensating unbalanced length caused by up-down travel difference of the eccentric disc cam, internal threads are arranged in the threaded pipe and used for being matched with external threads at one end of the threaded rod to change the amplitude of waveform output, so that the change of the length of the threaded rod is realized, the amplitude of a waveform curve is changed, and the diversified sinusoidal waveform output is facilitated;
The eccentric disc cam is used as a driving part and is connected with the cam roller, the sine wave is set to have two curve stages of two pushing strokes and two return strokes, the cam roller can be assembled from two ends to the center, one group of eccentric disc cams are installed on the cam shaft according to a phase difference of 90 degrees, the sleeve is circumferentially adopted to fix the cam shaft and simultaneously transmit torque, the cam shaft is radially fixed by a common flat key, and when the motor moves, the cam shaft is driven to move and the eccentric disc cam fixed on the cam shaft is driven to rotate, so that the circular reciprocating motion of the cam roller is realized.
The deformation wall surface mechanism for resistance testing is characterized in that: the eccentric disc cams are 5 eccentric disc cams, the cam rollers are 5 cam rollers, the threaded rod is 5 threaded rods, and the threaded rod is a telescopic threaded rod.
The deformation wall surface mechanism for resistance testing is characterized in that: the second backup pad is 5 second backup pads, all is equipped with deep groove ball bearing in every second backup pad, and the wall that warp links to each other with 5 threaded rods through the deep groove ball bearing in 5 second backup pads, ensures threaded rod height's adjustability.
The deformation wall surface mechanism for resistance testing is characterized in that: the deformation wall is a rectangular wall, a stainless steel mesh rubber plate is clamped, the joint of the two walls is fixed on a second supporting plate at the right center through epoxy resin rubber and additive isocyanate, and the second supporting plates corresponding to the two movable ends are clamped at the two movable ends through first supporting plates.
The deformation wall surface mechanism for resistance testing is characterized in that: each cam roller has the same thickness as each eccentric disc cam, threaded holes are formed in the cam rollers, the cam rollers are connected with a cam roller frame through hexagon head bolts, the cam rollers are guaranteed not to slide or deform relatively, the cam rollers are just clamped below each cam roller frame, and the cam rollers are guaranteed not to roll relatively.
The deformation wall surface mechanism for resistance testing is characterized in that: the bearing support comprises an upper bearing support and a lower bearing support, a waterproof deep groove ball bearing is arranged in the upper bearing support, the upper bearing support is fixed with the lower bearing support through a cylindrical hexagon head bolt, one end of the cam shaft penetrates through the waterproof deep groove ball bearing and the end cover and is connected with the motor through a plum blossom-shaped coupler, and the other end of the cam shaft is sealed in a sealed end cover of the bearing support.
The deformation wall surface mechanism for resistance testing is characterized in that: the novel electric motor comprises a base, wherein the base is designed to be a hollow base, the motor is fixed on the base through a hexagon head bolt, the motor is a stepping motor, and a pair of bearing supports are respectively fixed on the left side and the right side of the base through hexagon head bolts.
The invention has the beneficial effects that:
1) The device can reduce the occupied space of a hydrodynamic force experiment device in a laboratory, can realize standard sinusoidal movement, effectively adjust the period and the amplitude and increase the diversity of experiments;
2) The device has strong interchangeability and low cost, reduces trouble caused by repair and improves the efficiency of a researcher in carrying out hydrodynamic test.
3) By the invention, researchers who aim at the development of the drag reduction technology can provide reliable and accurate technological parameters of experiments on the basis of numerical simulation, and the drag reduction technology is promoted to be further developed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of an inventive camshaft and cam configuration;
FIG. 3 is a schematic view of the bearing housing structure of the support structure of the present invention;
FIG. 4 is a schematic view of an inventive roller structure and telescopic threaded rod structure;
fig. 5 is a schematic view of the structure of the support plate and the deformed wall surface of the invention.
In the figure: 101-a stepper motor; 102-plum blossom type coupling; 103-upper bearing support; 104-a lower bearing support; 105-eccentric disc cam; 106-a camshaft; 107-waterproof deep groove ball bearings; 108-a hexagon head bolt; 109-closing the end cap; 201-cam roller; 202-a cam roller frame; 301-resilient element footrests; 302-an elastic element; 303-upper footpads of the elastic elements; 304-threaded pipe; 305-a threaded rod; 401-deformed wall surface; 402-a first support plate; 403-deep groove ball bearings; 404-a second support plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of protection of the invention is not limited to the described scope.
As shown in fig. 1-5, a deformation wall surface mechanism for resistance test comprises a motor 101, wherein the motor 101 is a step motor, the right end of the motor 101 is provided with a pair of bearing supports, the bearing supports are provided with a cam shaft 106, each bearing support comprises an upper bearing support 103 and a lower bearing support 104, a waterproof deep groove ball bearing 107 is arranged in each bearing support, the upper bearing support 103 is fixed with the lower bearing support 104 through a cylindrical hexagon head bolt 108, one end of the cam shaft 106 passes through the waterproof deep groove ball bearing 107 and an end cover to be connected with the motor 101 through a plum blossom type coupling 102 so as to realize coaxial rotation with the motor 101, the other end of the cam shaft 106 is sealed in a bearing support sealing end cover 109, a group of eccentric disc cams 105 with adjacent 90-degree phase difference are arranged on the cam shaft 106 so as to output sine wave, the eccentric disc cams 105 can be assembled from two ends to the center, one group of eccentric disc cams 105 are arranged on the cam shaft 106 according to the 90-degree phase difference, the circumferential direction adopts sleeve fixation and simultaneously transmits torque, and the radial direction is fixed by a common flat key, the eccentric disc cams are 5 eccentric disc cams, a group of cam rollers 201 are arranged in a reciprocating manner in the vertical direction in cooperation with each eccentric disc cam 105, the number of the cam rollers 201 is 5, the use of cam roller 201 will increase the contact area for sliding friction while improving the accuracy of the transmission. Each cam roller 201 has the same thickness as the eccentric disc cam 105, threaded holes are arranged in the cam roller 201, the cam roller frames 202 are connected through the hexagon head bolts 108, the cam roller 201 is just clamped below the cam roller frames 202, the cam roller 201 is prevented from rolling relatively, each cam roller frame 202 is provided with an elastic element upper foot pad 303 and an elastic element lower foot pad 301, an elastic element 302 is arranged between the elastic element upper foot pad 303 and the elastic element lower foot pad 301, the elastic element 302 is a cylindrical spring, each elastic element lower foot pad 301 is fixed on the cam roller frames 202 through the hexagon head bolts 108, each elastic element upper foot pad 303 is provided with 5 threaded rods 305, the number of the threaded rods 305 is 5, each threaded rod 305 is a telescopic threaded rod, each threaded rod 305 is connected with the elastic element upper foot pad 303 through a threaded pipe 304, each elastic element upper foot pad 303 is connected with the threaded pipe 304 through a hexagon head bolt 108 and is used for compensating unbalanced length caused by up-down stroke difference of the eccentric disc cam 105, an internal thread is arranged in the threaded pipe 304 and is used for being matched with an external thread at one end of the threaded rod 305 to change the amplitude of waveform output, the period of the output waveform is controlled by the frequency of the motor 101, testing of different sinusoidal waveforms can be achieved. The length of the threaded rod 305 is changed, so that the phase difference is changed, the output of various sine waveforms is facilitated, the other end of the threaded rod 305 is provided with a deformed wall surface 401, the deformed wall surface 401 is fixed through a deep groove ball bearing 403 of the threaded rod 305, and the sliding accuracy can be realized. The deformed wall surface 401 is a rectangular wall surface and comprises two wall surfaces, the two end surfaces are provided with movable ends, the joint of the two wall surfaces is fixed on a second support plate 404 at the right center through epoxy resin glue and additive isocyanate, the second support plates 404 corresponding to the two movable ends are clamped at the two movable ends through a first support plate 402, the length of the wall surface exceeding the first support plate 402 can be used for compensating the length change of the deformed wall surface 401 when in fluctuation, and the deformed wall surface 401 is prevented from being broken or the other end of the deformed wall surface is prevented from being flat and collapsed, and stretches into the support plate with a clamping groove to be free to stretch so as to ensure the deformation difference caused by movement deformation. The deformed wall 401 is made of a stainless steel mesh-sandwiched rubber plate, so that a certain breaking force and elongation can be kept, the elastic element 302 is in a free length when the deformed wall 401 is horizontal, and the elastic element 302 is compressed or stretched when the eccentric disc cam 105 moves, and the restoring force can drive the deformed wall 401 to restore to the horizontal shape.
The invention relates to a deformation wall surface mechanism for resistance testing, which comprises a base, wherein the base is hollow, a motor 101 is fixed on the base through a hexagon head bolt 108, and a pair of bearing supports are respectively fixed on the left side and the right side of the base through the hexagon head bolt 108.
At the beginning of the experiment, the motor 101 is started to drive the cam shaft 106 to rotate, and the eccentric disc cam 105 on the cam shaft 106 is guided to rotate. Rotation of the eccentric disc cam 105 causes the cam roller 201 closely connected thereto to reciprocate in the vertical direction, causing the elastic member 302 to compress so that the movement of the threaded rod 305 is transmitted to the deformed wall surface 401. Since the phases of the 5 eccentric disc cams 105 are different, the deformed wall surfaces 401 connected with the first support plate 402 move differently at the same time, that is, the whole deformable wall surfaces 401 output to take on a sine wave shape.
Claims (7)
1. The utility model provides a deformation wall mechanism that can be used to resistance test, includes motor (101), motor (101) right-hand member is equipped with a pair of bearing support, its characterized in that: the cam structure comprises a cam shaft (106), a group of eccentric disc cams (105) with adjacent phase differences of 90 degrees are arranged on the cam shaft (106) so as to output sine waves, a group of cam rollers (201) are arranged in a reciprocating mode in a vertical direction in cooperation with the group of eccentric disc cams (105), each cam roller (201) is fixed on a cam roller frame (202), an elastic element upper foot pad (303) and an elastic element lower foot pad (301) are arranged on each cam roller frame (202), each cam roller frame (202) is connected with the elastic element lower foot pad (301), an elastic element (302) is arranged between the elastic element upper foot pad (303) and the elastic element lower foot pad (301), a threaded rod (305) is arranged on each elastic element upper foot pad (303), one end of each threaded rod (305) is connected with the elastic element upper foot pad (303) through a threaded pipe (304), a deformation wall surface (401) is arranged on the other end of each threaded rod (305), the deformation wall surface (401) is connected with two ends of each threaded rod (305) through a group of second support plates (305) at two ends of the deformation wall surfaces (404) respectively, the two ends of the deformation wall surfaces (401) are fixedly arranged on two ends of each support plate (404), the second support plates (404) corresponding to the two movable ends are fixed with the deformed wall surface (401) through the first support plates (402);
The elastic elements (302) are cylindrical springs, the upper foot pad (303) of each elastic element is connected with the threaded pipe (304) through a hexagon head bolt (108), the lower foot pad (301) of each elastic element is connected with the cam roller frame (202) through the hexagon head bolt (108) and is used for compensating unbalanced length caused by up-down stroke difference of the eccentric disc cam (105), internal threads are arranged in the threaded pipe (304) and are used for being matched with external threads at one end of the threaded rod (305) to change the amplitude of waveform output, so that the change of the length of the threaded rod (305) is realized, the amplitude of a waveform curve is changed, and the diversified sinusoidal waveform output is facilitated;
The eccentric disc cams (105) are used as a driving part and connected with the cam rollers (201), sine waveforms are arranged to have curve stages of two pushing strokes and two return strokes, the cam rollers can be assembled from two ends to the center, one group of eccentric disc cams (105) are arranged on the cam shafts (106) according to a phase difference of 90 degrees, the circumferential direction is fixed by adopting a sleeve and simultaneously transmits torque, the radial direction is fixed by using a common flat key, and when the motor (101) moves, the cam shafts (106) are driven to move and the eccentric disc cams (105) fixed on the cam shafts (106) are driven to rotate, so that the circular reciprocating movement of the cam rollers (201) is realized.
2. A deformable wall mechanism for resistance testing as claimed in claim 1, wherein: the eccentric disc cams (105) are 5 eccentric disc cams, the cam rollers (201) are 5 cam rollers, the threaded rods (305) are 5 threaded rods, and the threaded rods (305) are telescopic threaded rods.
3. A deformable wall mechanism for resistance testing as claimed in claim 1, wherein: the second support plates (404) are 5 second support plates, each second support plate (404) is provided with a deep groove ball bearing (403), and the deformed wall surface (401) is connected with 5 threaded rods (305) through the deep groove ball bearings (403) on the 5 second support plates (404), so that the height adjustability of the threaded rods (305) is ensured.
4. A deformable wall mechanism for resistance testing as claimed in claim 3, wherein: the deformed wall surface (401) is a rectangular wall surface, a stainless steel mesh rubber plate is clamped, the joint of the two wall surfaces is fixed on a second supporting plate (404) at the center through epoxy resin rubber and additive isocyanate, and the second supporting plates (404) corresponding to the two movable ends are clamped at the two movable ends through the first supporting plate (402).
5. A deformable wall mechanism for resistance testing as claimed in claim 1, wherein: each cam roller (201) has the same thickness as each eccentric disc cam (105), threaded holes are formed in the cam rollers, the cam rollers are connected with cam roller frames (202) through hexagon head bolts (108), relative sliding or deformation is prevented, the cam rollers (201) are just clamped below each cam roller frame (202), and the cam rollers (201) are prevented from rolling relatively.
6. A deformable wall mechanism for resistance testing as claimed in claim 1, wherein: the bearing support comprises an upper bearing support (103) and a lower bearing support (104), a waterproof deep groove ball bearing (107) is arranged in the upper bearing support, the upper bearing support (103) is fixed with the lower bearing support (104) through a cylindrical hexagon head bolt (108), one end of a cam shaft (106) penetrates through the waterproof deep groove ball bearing (107) and the end cover to be connected with the motor (101) through a plum blossom-shaped coupler (102), and the other end of the cam shaft (106) is sealed in a bearing support sealing end cover (109).
7. A deformable wall mechanism for resistance testing as claimed in claim 1, wherein: the novel motor comprises a base, wherein the base is designed to be a hollow base, a motor (101) is fixed on the base through a hexagon head bolt (108), the motor (101) is a stepping motor, and a pair of bearing supports are respectively fixed on the left side and the right side of the base through the hexagon head bolt (108).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911141587.7A CN110864872B (en) | 2019-11-20 | 2019-11-20 | Deformation wall surface mechanism capable of being used for resistance test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911141587.7A CN110864872B (en) | 2019-11-20 | 2019-11-20 | Deformation wall surface mechanism capable of being used for resistance test |
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| CN110864872A CN110864872A (en) | 2020-03-06 |
| CN110864872B true CN110864872B (en) | 2024-05-28 |
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| CN109442139A (en) * | 2018-12-25 | 2019-03-08 | 南昌大学 | A kind of diameter changing mechanism suitable for pipe robot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793810A (en) * | 2005-12-23 | 2006-06-28 | 清华大学 | Flat plate wall fluid friction resistance mensuring device based on open circulation |
| CN106525307A (en) * | 2016-08-04 | 2017-03-22 | 浙江工业大学 | Bionic non-smooth surface friction resistance testing device based on underwater |
| KR101926078B1 (en) * | 2018-07-05 | 2018-12-06 | 한국해양과학기술원 | Transporting device for measuring flow field in towing tank and method thereof |
| CN108982059A (en) * | 2018-08-27 | 2018-12-11 | 浙江工业大学 | A kind of deformation wall surface fluid friction resistance test device and simulator |
| CN109036031A (en) * | 2018-09-11 | 2018-12-18 | 浙江工业大学 | A kind of deformable fluctuation wall surface device |
| CN210664982U (en) * | 2019-11-20 | 2020-06-02 | 浙江工业大学 | Wall surface deformation mechanism for resistance test |
-
2019
- 2019-11-20 CN CN201911141587.7A patent/CN110864872B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793810A (en) * | 2005-12-23 | 2006-06-28 | 清华大学 | Flat plate wall fluid friction resistance mensuring device based on open circulation |
| CN106525307A (en) * | 2016-08-04 | 2017-03-22 | 浙江工业大学 | Bionic non-smooth surface friction resistance testing device based on underwater |
| KR101926078B1 (en) * | 2018-07-05 | 2018-12-06 | 한국해양과학기술원 | Transporting device for measuring flow field in towing tank and method thereof |
| CN108982059A (en) * | 2018-08-27 | 2018-12-11 | 浙江工业大学 | A kind of deformation wall surface fluid friction resistance test device and simulator |
| CN109036031A (en) * | 2018-09-11 | 2018-12-18 | 浙江工业大学 | A kind of deformable fluctuation wall surface device |
| CN210664982U (en) * | 2019-11-20 | 2020-06-02 | 浙江工业大学 | Wall surface deformation mechanism for resistance test |
Non-Patent Citations (1)
| Title |
|---|
| 展向振动流向传播的波动壁面的湍流减阻;黄乐萍 等;《力学学报》;20110331;第277-283页 * |
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