CN113776761A - More stable scientific research vibration experiment platform - Google Patents
More stable scientific research vibration experiment platform Download PDFInfo
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- CN113776761A CN113776761A CN202110920572.1A CN202110920572A CN113776761A CN 113776761 A CN113776761 A CN 113776761A CN 202110920572 A CN202110920572 A CN 202110920572A CN 113776761 A CN113776761 A CN 113776761A
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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Abstract
The invention relates to the technical field of vibrating devices, in particular to a more stable scientific research vibration experiment platform which is characterized by comprising a vibrating box body, vibrating motors, a positioning frame and a controller, wherein the positioning frame is arranged in the vibrating box body, and the positioning frame is symmetrically provided with two vibrating motors; the vibration box body is a square frame and comprises a working platform at the top, side plates on two sides and a bottom plate, wherein elastic ground feet are arranged at four corners of the bottom plate, an installation clamping groove used for fixing a working part is formed in the working platform, positioning holes are correspondingly formed in two sides of a positioning frame, the side plates and the bottom plate, and the angle of exciting force of a motor can be changed by adjusting the inclination angle of the positioning frame relative to the bottom plate, so that different vibration forms are generated. The invention has the beneficial effects that: through the fixed mode that changes the locating rack, realize the circumference of horizontal direction and shimmy or the experimental needs of rectilinear vibration and combination vibration, need not to change experimental facilities, simple structure, a tractor serves several purposes has better economic nature and suitability.
Description
Technical Field
The invention relates to the technical field of vibration devices, in particular to a more stable scientific research vibration experiment platform which can realize multi-angle linear vibration and circumferential shimmy in the horizontal direction and meet the requirements of any one or combination of vibration experiments.
Background
The research on the dynamics of particle substances under different vibration forms is always a hot subject in eyes of a learner, the existing vibration experiment platform on the market can only realize single vibration, different vibration devices are needed for different vibration experiments, the experiment platform needs to be replaced when the vibration experiments are combined, and the particle configuration is difficult to ensure when the platform is replaced because the experiment object is discrete element particles. Different types of experiments need to redesign vibration equipment due to the fact that working parts are very different, the equipment utilization rate is not high, and the vibration layering type of experiments need to reduce the influence of anisotropic force due to high requirements, and the experiment precision is guaranteed.
The best method for solving the problems is to design a more stable scientific research vibration experiment platform, and an excitation source with a changeable fixed position is adopted, so that different forms of vibration can be realized by means of excitation forces in different directions.
Authorized public announcement number: CN 209006141U discloses a vibration platform, one end of a vibration base is rotatably connected with a base, the other end of the vibration base is fixedly connected with the base, the fixed position of the vibration base is adjustable, and the inclination angle is convenient to adjust. Can only realize the linear vibration in the oblique direction and is only suitable for the vibration screening experiment.
Authorized public announcement number: CN 211099976U discloses a centrifugal force vibration platform, which is provided with a transverse elastic expansion device, and the whole vibration platform can realize vibration at multiple angles up and down, left and right by driving a centrifugal mechanism to rotate through a driving motor, but can not realize circular shimmy motion.
Authorized public announcement number: CN 205914366U discloses an invention patent "a vibration platform", the bottom of shaking table installs the slider, slider and guide rail sliding connection, the guide rail is installed at the base, the top, both can vibrate from top to bottom and can left and right slip, make the device possess the function of three-dimensional straight line vibration, but the device structure is more complicated.
Disclosure of Invention
The invention aims to provide a more stable scientific research vibration experiment platform, which overcomes the defects of the prior art, fixes a vibration motor to the middle position of equipment through a detachable positioning frame and a positioning cross beam, and shortens the moment of acting force so as to reduce the vibration error in the continuous vibration process; changing the direction and action mode of the exciting force of the vibration motor, thereby realizing horizontal circumferential shimmy, linear vibration or combined vibration experiment; the positioning holes are arranged on the positioning frame and the side plate, and the alignment position is adjusted, so that the angle of linear vibration can be changed. The working platform is provided with an installation clamping groove, and different types of experiments can be carried out only by replacing different working parts.
In order to achieve the purpose, the invention provides the following technical scheme:
the technical scheme is as follows: a more stable scientific research vibration experiment platform is characterized by comprising a vibration box body, vibration motors, a positioning frame and a controller, wherein the positioning frame is arranged in the vibration box body, and the two vibration motors are symmetrically arranged on the positioning frame; the vibration box body is a square frame and comprises a working platform at the top, side plates at two sides and a bottom plate, wherein elastic ground feet are arranged at four corners of the bottom plate, an installation clamping groove for fixing a working part is formed in the working platform, positioning holes are correspondingly formed in two sides of the positioning frame, the side plates and the bottom plate, and the angle of exciting force of the motor can be changed by adjusting the inclination angle of the positioning frame relative to the bottom plate, so that different vibration modes are generated; the center distance between the two vibration motors is smaller than or equal to the distance between the two elastic feet.
The second technical proposal is that: a more stable scientific research vibration experiment platform is characterized by comprising a vibration box body, vibration motors, a positioning frame, a positioning beam and a controller, wherein the positioning frame is arranged in the vibration box body, and the two vibration motors are symmetrically arranged on the positioning frame; the vibration box body is a square frame and comprises a working platform at the top, side plates at two sides and a bottom plate, wherein elastic feet are arranged at four corners of the bottom plate, an installation clamping groove for fixing a working part is formed in the working platform, positioning holes are correspondingly formed in two sides of a positioning frame, the side plates and the bottom plate, one end of the positioning frame is connected with the bottom plate, the other end of the positioning frame is connected with a positioning cross beam when the positioning frame is vertically placed, two ends of the positioning cross beam are respectively connected with the two side plates, and after the circuit of any vibration motor is reversely connected, horizontal circumferential pendulum vibration motion is generated at the moment; the center distance between the two vibration motors is smaller than or equal to the distance between the two elastic feet.
The locating holes on the two sides of the locating rack and the side plates form an included angle of 22.5 degrees between every two adjacent locating holes.
And the included angle between two adjacent positioning holes on the bottom plate is 45 degrees.
The mounting clamping groove is any one or combination of more than two of a T-shaped groove, a rectangular groove, a semi-long hole, a round hole and a long round hole.
The elastic feet are rubber shock-insulation springs with the diameter of more than 50 mm.
The vibration motor is a TOTB series ordinary field vibration motor or a ZW series side plate motor.
The bottom of the working platform is provided with an acceleration sensor, the acceleration sensor and the two vibrating motors are respectively connected with a controller through cables, and the controller is provided with switches of the two vibrating motors, a timer knob and a vibration curve display screen.
The invention fixes the two vibrating motors at the middle position of the vibrating box body by adjusting the positioning frame and the mounting beam, shortens the moment of acting force, reduces the vibration error caused by the anisotropic force generated by inertia during continuous vibration, changes the direction of exciting force by changing the mounting position and angle, and forms multi-angle linear vibration and horizontal circumferential shimmy.
Compared with the prior art, the invention has the beneficial effects that: 1) the device relies on the locating rack to change excitation motor from traditional both sides fixed mode design to the centre on equipment, has shortened the moment of exciting force to reduce because of the inertia of continuous vibration, the vibration error that produces the heterodromous power and lead to, strengthen the stability of vibration process. 2) Adopt detachable locating rack and location crossbeam, through the fixed mode that changes the locating rack, realize the circumference of horizontal direction shimmy or rectilinear vibration and combination vibration, need not to change experimental facilities. 3) The positioning frame and the side plate are provided with positioning holes, linear vibration at different angles can be realized by changing the alignment position, and the operation is simple and convenient. 4) The working platform is provided with the installation clamping grooves all around, and only the installed working parts need to be replaced for different types of experiments, so that the time and energy required for designing new equipment are saved. The invention has simple structure, few complex devices, multiple purposes and better economy and applicability.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vibration box in an embodiment of the present invention;
FIG. 4 is a schematic view of a spacer structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of a positioning beam configuration in an embodiment of the present invention;
fig. 6 is a schematic diagram of the use state of the embodiment of the invention and a schematic diagram of the structure of the embodiment for the vibration screening type experiment.
In the figure: 1-vibration box body, 101-working platform, 102-installation clamping groove, 103-side plate, 104-beam fixing hole, 105-motor fixing hole, 106-positioning hole, 107-bottom plate, 2-positioning frame, 201-aligning hole, 202-fixing hole, 3-vibration motor, 4-positioning beam, 401-fixing hole, 402-through hole, 5-elastic foot seat, 6-controller and 7-cantilever screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 and fig. 3-6 are schematic structural views of an embodiment of a more stable scientific research vibration experiment platform, which includes a vibration box 1, a vibration motor 3, a positioning frame 2 and a controller 6, wherein the positioning frame 2 is arranged in the vibration box 1, and the two vibration motors 3 are symmetrically arranged on the positioning frame 2; the vibrating box body 1 is a square frame and comprises a working platform 101 at the top, side plates 103 and a bottom plate 107 on two sides, elastic ground feet 5 are arranged at four corners of the bottom plate 107, an installation clamping groove 102 used for fixing a working part is formed in the working platform 101, positioning holes are correspondingly formed in two sides of a positioning frame 2, the side plates 103 and the bottom plate 107, and the angle of exciting force of a motor can be changed by adjusting the inclination angle of the positioning frame 2 relative to the bottom plate 107, so that different vibration forms are generated. Mounting pockets 102 are used to secure different types of work pieces. 16 positioning holes 106 distributed circumferentially are arranged around the motor fixing hole 105, and the included angle between every two adjacent positioning holes 106 is 22.5 degrees. The bottom plate 107 is also connected to the side plate 103 by welding, and the bottom plate 107 is provided with 8 positioning holes 106 distributed circumferentially. Two vibrating motors 3 are fixed in the middle of the vibrating box body 1 through the positioning frame 2, and the center distance of the two vibrating motors 3 is smaller than the distance between the two elastic feet 5. The positioning frame 2 is arranged between the two side plates 103 and forms an excitation source together with the vibration motor 3. When the positioning frame 2 is horizontally placed, two aligning holes 201 are respectively arranged at two ends and are aligned with the positioning holes 106 on the side plates 103 for adjusting the installation angle of the positioning frame 2 to form linear vibration in different directions,
fig. 2 is a schematic structural diagram of a second embodiment of the more stable scientific research vibration experiment platform, which comprises a vibration box body 1, vibration motors 3, a positioning frame 2, a positioning beam 4 and a controller 6, wherein the positioning frame 2 is arranged in the vibration box body 1, and the two vibration motors 3 are symmetrically arranged on the positioning frame 2; vibration box 1 is square frame, work platform 101 including the top, curb plate 103 and bottom plate 107 on both sides, the four corners of bottom plate 107 is provided with elasticity lower margin 5, be provided with the installation draw-in groove 102 that is used for fixed work part on the work platform 101, 2 both sides of locating rack, it is equipped with the locating hole to correspond on curb plate 103 and the bottom plate 107, when the locating rack is vertical to be placed, 4 one end of locating rack is connected with bottom plate 107, the other end is connected with location crossbeam 4, the both ends of location crossbeam 4 link to each other with two curb plates 103 respectively, with one of them vibrating motor's circuit reversal back, produce horizontal circumference pendulum vibration motion this moment, the centre-to-centre spacing of two vibrating motor 3 is less than the interval between two elasticity lower margins 5. The positioning beam 4 is detachable, has a fixing hole 401 in the middle and through holes 402 at both ends, and is connected to the beam fixing holes 104 of the side plates 103 by bolts.
The working principle of the invention is as follows: two vibrating motors 3 are fixed on two sides of the positioning frame 2, directional exciting force is generated by utilizing eccentric force generated by rotation of an eccentric block in the motor, amplitude is adjusted by adjusting the phase angle of the eccentric block, and vibration frequency is adjusted by a controller. The initial positions of the phase angles of the eccentric blocks are the same, so that the two motors generate exciting forces in the same direction, and the resultant direction is perpendicular to the plane where the axes of the two motors are located. When the locating rack is placed horizontally, the fixed angle of the locating rack is changed, the direction of the exciting force is changed accordingly, and multi-angle linear vibration is achieved. When the locating rack is vertically placed, the circuit of one motor is reversely connected, the exciting forces of the two motors are the same in size and opposite in direction, a twisting effect is generated, and horizontal circular shimmy motion is realized by matching the elastic recovery effect of the elastic foot seats. When equipment lasted the vibration, because inertia can produce the incorgruous power of non-direction of motion, the locating rack is fixed two vibrating motor at the intermediate position of equipment, and the vibration equipment of traditional excitation source in both sides, and the moment of action is shorter, and the vibration error that the incorgruous power leads to is littleer, and the vibration process is more steady, and the result is more reliable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A more stable scientific research vibration experiment platform is characterized by comprising a vibration box body, vibration motors, a positioning frame and a controller, wherein the positioning frame is arranged in the vibration box body, and the two vibration motors are symmetrically arranged on the positioning frame; the vibration box body is a square frame and comprises a working platform at the top, side plates at two sides and a bottom plate, wherein elastic ground feet are arranged at four corners of the bottom plate, an installation clamping groove for fixing a working part is formed in the working platform, positioning holes are correspondingly formed in two sides of the positioning frame, the side plates and the bottom plate, and the angle of exciting force of the motor can be changed by adjusting the inclination angle of the positioning frame relative to the bottom plate, so that different vibration modes are generated; the center distance between the two vibration motors is smaller than or equal to the distance between the two elastic feet.
2. A more stable scientific research vibration experiment platform is characterized by comprising a vibration box body, vibration motors, a positioning frame, a positioning beam and a controller, wherein the positioning frame is arranged in the vibration box body, and the two vibration motors are symmetrically arranged on the positioning frame; the vibration box body is a square frame and comprises a working platform at the top, side plates at two sides and a bottom plate, wherein elastic feet are arranged at four corners of the bottom plate, an installation clamping groove for fixing a working part is formed in the working platform, positioning holes are correspondingly formed in two sides of a positioning frame, the side plates and the bottom plate, one end of the positioning frame is connected with the bottom plate, the other end of the positioning frame is connected with a positioning cross beam when the positioning frame is vertically placed, two ends of the positioning cross beam are respectively connected with the two side plates, and after the circuit of any vibration motor is reversely connected, horizontal circumferential pendulum vibration motion is generated at the moment; the center distance between the two vibration motors is smaller than or equal to the distance between the two elastic feet.
3. The more stable scientific research vibration experiment platform according to claim 1 or 2, wherein the two sides of the positioning frame and the positioning holes on the side plates form an included angle of 22.5 degrees between two adjacent positioning holes.
4. The more stable scientific research vibration experiment platform according to claim 1 or 2, wherein the included angle between two adjacent positioning holes on the bottom plate is 45 °.
5. The more stable scientific research vibration experiment platform according to claim 1 or 2, wherein the mounting clamping groove is any one or a combination of more than two of a T-shaped groove, a rectangular groove, a semi-long hole, a round hole and a long round hole.
6. The more stable scientific research vibration experiment platform according to claim 1 or 2, wherein the elastic ground feet are rubber shock-isolation springs with diameters of more than 50 mm.
7. The more stable vibration experiment platform for scientific research as claimed in claim 1 or 2, wherein the vibration motor is a TOTB series Pond vibration motor or a ZW series side plate motor.
8. The more stable scientific research vibration experiment platform according to claim 1 or 2, wherein the bottom of the working platform is provided with an acceleration sensor, the acceleration sensor and the two vibration motors are respectively connected with a controller through cables, and the controller is provided with switches of the two vibration motors, a timer knob and a vibration curve display screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110920572.1A CN113776761A (en) | 2021-08-11 | 2021-08-11 | More stable scientific research vibration experiment platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110920572.1A CN113776761A (en) | 2021-08-11 | 2021-08-11 | More stable scientific research vibration experiment platform |
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| CN113776761A true CN113776761A (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323523A (en) * | 2021-12-30 | 2022-04-12 | 天津大学 | Vibrating screen crossbeam fatigue testing machine |
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| CN213435628U (en) * | 2020-08-12 | 2021-06-15 | 大连正兴磨料有限公司 | Mining shale shaker convenient to clearance |
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| CN104075906A (en) * | 2014-07-21 | 2014-10-01 | 苏州广博力学环境实验室有限公司 | Vibration, centrifugation and climatic environment composite-testing equipment |
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| CN114323523B (en) * | 2021-12-30 | 2023-02-24 | 天津大学 | Vibrating screen crossbeam fatigue testing machine |
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