CN110864861A - Vibration test bed and working method thereof - Google Patents
Vibration test bed and working method thereof Download PDFInfo
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- CN110864861A CN110864861A CN201911293674.4A CN201911293674A CN110864861A CN 110864861 A CN110864861 A CN 110864861A CN 201911293674 A CN201911293674 A CN 201911293674A CN 110864861 A CN110864861 A CN 110864861A
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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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Abstract
The invention discloses a vibration test bed and a working method thereof, the vibration test bed comprises a base main body, a platform main body, a driving mechanism, a linkage mechanism and an amplitude adjusting piece, wherein the driving mechanism is arranged on the base main body, the amplitude adjusting piece is provided with a connecting part and an adjusting part, the connecting part of the amplitude adjusting piece is connected with the driving mechanism, a plurality of adjusting holes are arranged on the adjusting part of the amplitude adjusting piece, one end of the linkage mechanism is connected with the adjusting holes, the other end of the linkage mechanism is connected with the platform main body, and the platform main body is movably connected with the base main body. The vibration test bed can freely adjust the vibration amplitude and improve the test accuracy.
Description
Technical Field
The invention belongs to the field of vibration testing, and particularly relates to a vibration test bed and a working method thereof.
Background
The vibration test bed is a test device used for simulating the effect of a real vibration environment in a laboratory, and can be used for simulating the environment of toys, electronics, furniture, packages, automobile parts and other products and goods related to transportation in the transportation process and detecting the vibration resistance, reliability and integrity of the product structure.
In the testing process, many times of contrast tests are often required to be carried out under different vibration amplitudes, inaccurate test on a test object is avoided in the using process, most of the existing vibration test beds cannot freely adjust the vibration amplitudes of the vibration test beds, and further the testing requirements cannot be met.
Disclosure of Invention
The invention aims to provide a vibration test bed and a working method thereof.
The technical scheme is as follows:
vibration test platform, including base main part, platform main part, actuating mechanism, link gear and amplitude control spare, actuating mechanism locates in the base main part, amplitude control spare has connecting portion and regulation portion, amplitude control spare's connecting portion are connected with actuating mechanism, be equipped with a plurality of regulation holes in amplitude control spare's the regulation portion, link gear's one end and regulation jogged joint, the other end is connected with the platform main part, swing joint between platform main part and the base main part.
The driving mechanism drives the amplitude adjusting piece, and drives the linkage mechanism through the amplitude adjusting piece, so as to drive the platform main body to move along the base main body, and thus the vibration simulation environment is realized; according to the vibration amplitude required by the test, a proper adjusting hole is selected through measurement, and the linkage mechanism is connected with the selected adjusting hole to adjust the vibration amplitude of the vibration test bed and improve the test accuracy.
In one embodiment, the plurality of adjusting holes are uniformly distributed on the same straight line, and the plurality of adjusting holes are arranged at equal intervals. According to different vibration amplitudes, different adjusting holes are adopted to be connected with the linkage mechanism so as to realize the adjustment of the vibration amplitudes.
In one embodiment, the base main body is provided with a guide mechanism, and the platform main body is movably connected with the base main body through the guide mechanism. The guide mechanism enables the platform main body to move along the guide direction of the base main body, and normal operation of tests is facilitated.
In one embodiment, the base main body comprises a first base plate, a second base plate, a third base plate, a fourth base plate and a fifth base plate, at least one guide rail is arranged on each of the first base plate, the second base plate, the third base plate and the fourth base plate, the plurality of guide rails are vertically arranged, each guide rail is movably connected with a connecting rod, the platform main body is connected with the guide rails through the connecting rods, and the guide rails and the connecting rods form the guide mechanism. When the driving mechanism drives the platform main body to move, the platform main body moves in the vertical direction along the guide rail so as to realize the up-and-down vibration of the platform main body.
In one embodiment, the fifth substrate is horizontally disposed, the first substrate, the second substrate, the third substrate and the fourth substrate are vertically disposed on the fifth substrate, the first substrate and the third substrate are disposed opposite to each other, one side of the first substrate is connected to the second substrate, the other side of the first substrate is connected to the fourth substrate, the second substrate and the fourth substrate are also disposed opposite to each other, a base main body with an open top and a movable cavity is disposed inside the base main body, and the driving mechanism is located in the movable cavity. Through the setting that base main part open-top and inside were equipped with movable cavity, when making the motion of platform main part and base main part inner structure, be difficult to influenced, be favorable to experimental normal clear.
In one embodiment, the guide rail is provided with at least two sliding blocks, the sliding blocks are located between the connecting rod and the guide rail, the sliding blocks are movably connected with the guide rail, the sliding blocks are fixedly connected with the connecting rod, and the sliding blocks are distributed at equal intervals along the guide direction of the guide rail. The arrangement of the sliding block reduces the friction force between the connecting rod and the guide rail, and is beneficial to the movement of the connecting rod; simultaneously, the slider is equipped with two at least, and the equidistant distribution of a plurality of sliders can improve the stationarity of platform main part in the motion process.
In one embodiment, the linkage mechanism comprises a linkage frame body, a first linkage rod and a second linkage rod, the linkage frame body is arranged in a triangular mode, the linkage frame body is provided with a first end portion, a second end portion and a third end portion, the first end portion is connected with the first linkage rod, the second end portion is movably connected with the second linkage rod, the third end portion is movably connected with an adjusting portion of the amplitude adjusting piece, and one ends, far away from the linkage frame body, of the first linkage rod and the second linkage rod are movably connected with the platform main body. The driving mechanism drives the amplitude adjusting piece to move so as to drive the linkage frame body to move and further drive the first linkage rod and the second linkage rod to move, so that the platform main body moves; the platform main body moves up and down along the base body under the guide action of the movable connection of the linkage frame body and the amplitude adjusting piece, the movable connection of the first linkage rod and the second linkage rod with the platform main body and the guide mechanism.
In one embodiment, a first vertical sliding bearing and a second vertical sliding bearing are arranged on the platform main body, one end, far away from the linkage frame body, of the first linkage rod is hinged to the first vertical sliding bearing, and one end, far away from the linkage frame body, of the second linkage rod is hinged to the second vertical sliding bearing. Through being equipped with vertical slide bearing, reduced the sliding friction power between gangbar and the platform main part, improved the flexibility ratio of gangbar motion simultaneously, made the platform main part remove more smoothly.
In one embodiment, the driving mechanism comprises a driving motor, the driving motor is provided with a fixing part and a driving part, the driving part is fixedly connected with the connecting part of the amplitude adjusting part, the base body is provided with a cushion block, and the fixing part of the driving motor is arranged on the cushion block. Install driving motor on the cushion, avoid driving motor to rotate the influence that the vibration that the in-process produced led to the fact the experiment, be favorable to experimental normal clear.
The working method of the vibration test bed comprises the following steps:
a. before the vibration test bed works, the linkage mechanism is connected with the adjusting hole;
b. the driving mechanism is started after receiving a starting instruction, and the vibration test bed works;
c. the driving mechanism drives the amplitude adjusting piece to move, and the amplitude adjusting piece drives the linkage mechanism to move while moving, so that the platform main body is driven to move on the base main body;
d. and c, before the next vibration test table works, adjusting the vibration amplitude of the vibration test table according to test requirements, selecting a corresponding adjusting hole through measurement, connecting the linkage mechanism with the selected adjusting hole, and repeating the steps b-c.
The vibration test bed provided by the invention has the advantages that the amplitude of vertical vibration can be freely adjusted, the test bed can conveniently perform multi-contrast test, and the test accuracy is improved; the design and installation of the vibration test bed are suitable for testing and simulating small loads, and the motion state of the small loads under various vertical vibration conditions can be completed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles and effects of the invention.
Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.
Fig. 1 is a schematic view of the overall structure of a vibration test stand according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a linkage mechanism of a vibration test stand according to an embodiment of the present invention.
Fig. 3 is a partial structural schematic diagram of a guide mechanism of a vibration test stand according to an embodiment of the present invention.
Fig. 4 is a schematic view of the internal structure of the vibration test stand according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an amplitude adjusting member of a vibration testing stand according to an embodiment of the present invention.
Description of reference numerals:
10. a base body; 11. a first substrate; 12. a second substrate; 13. a third substrate; 14. a fourth substrate; 15. a fifth substrate; 20. a platform body; 30. a drive mechanism; 40. a linkage mechanism; 41. a linkage frame body; 411. a first end portion; 412. a second end portion; 413. a third end portion; 42. a first linkage rod; 43. a second linkage rod; 50. an amplitude adjusting member; 51. an adjustment hole; 60. a guide mechanism; 61. a guide rail; 62. a connecting rod; 63. a slider; 70. a first vertical sliding bearing; 71. a second vertical sliding bearing; 80. and a cushion block.
Detailed Description
In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.
Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the case of combining the technical solutions of the present invention in a realistic scenario, all technical and scientific terms used herein may also have meanings corresponding to the purpose of achieving the technical solutions of the present invention.
As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.
As shown in fig. 1 to 5, the vibration test stand includes a base main body 10, a platform main body 20, a driving mechanism 30, a linkage mechanism 40 and an amplitude adjusting member 50, the driving mechanism 30 is disposed on the base main body 10, the amplitude adjusting member 50 has a connecting portion and an adjusting portion, the connecting portion of the amplitude adjusting member 50 is connected to the driving mechanism 30, a plurality of adjusting holes 51 are disposed in the adjusting portion of the amplitude adjusting member 50, one end of the linkage mechanism 40 is connected to the adjusting holes 51, the other end of the linkage mechanism is connected to the platform main body 20, and the platform main body 20 is movably connected to the base main body 10. The driving mechanism 30 drives the amplitude adjusting part 50, and drives the linkage mechanism 40 through the amplitude adjusting part 50, so as to drive the platform main body 20 to move along the base main body 10, so as to realize the environment of simulating vibration; according to the vibration amplitude required by the test, a proper adjusting hole 51 is selected through measurement, and the linkage mechanism 40 is connected with the selected adjusting hole 51 so as to adjust the vibration amplitude of the vibration test bed and improve the test accuracy.
The plurality of adjusting holes 51 are uniformly distributed on the same straight line, the plurality of adjusting holes 51 are arranged at equal intervals, a straight line formed by the adjusting holes 51 extends towards the farthest edge of the amplitude adjusting piece 50 along the connecting part, different adjusting holes 51 are adopted to be connected with the linkage mechanism 40 according to different vibration amplitudes, and the distance between the selected adjusting holes 51 and the connecting part is used as the radius length of the linkage assembly when the linkage assembly rotates around the driving mechanism 30, so that the adjustment of the vibration amplitude is realized; the further the selected adjustment hole 51 is from the connection, the greater the amplitude of the vibration of the test stand.
Base main body 10 includes first base plate 11, second base plate 12, third base plate 13, fourth base plate 14 and fifth base plate 15, respectively be equipped with two guide rails 61 on first base plate 11, second base plate 12, third base plate 13 and the fourth base plate 14, have the interval between two guide rails 61 and flush the setting, the equal vertical setting of all guide rails 61, every equal swing joint has connecting rod 62 on the guide rail 61, platform main body 20 passes through connecting rod 62 and is connected with guide rail 61, and connecting rod 62 and platform main body 20 are close to one side fixed connection of base main body 10, and connecting rod 62 perpendicular to platform main body 20, guide rail 61 constitutes guiding mechanism 60 with connecting rod 62. When the driving mechanism 30 drives the platform main body 20 to move, the platform main body 20 moves in the vertical direction along the guide rail 61, so as to realize the up-and-down vibration of the platform main body 20; the guide rails 61 are arranged on each substrate to guide the platform main body 20, so that the platform main body 20 can be kept horizontal, and the platform is prevented from being inclined due to uneven stress; the provision of two guide rails 61 may enhance the stability of the platform body 20 when moving up and down.
A sliding block 63 is arranged on the guide rail 61, in this embodiment, the sliding block 63 is a linear bearing, the sliding block 63 is located between the connecting rod 62 and the guide rail 61, the sliding block 63 is movably connected with the guide rail 61, and the sliding block 63 is fixedly connected with the connecting rod 62; the arrangement of the sliding block 63 reduces the friction force between the connecting rod 62 and the guide rail 61, which is beneficial to the movement of the connecting rod 62; the number of the sliding blocks 63 is at least two, and the sliding blocks 63 are distributed at equal intervals along the guide direction of the guide rail 61.
The driving mechanism 30 includes a driving motor, in this embodiment, the rotation motion of the driving motor is an approximate sine wave motion, which can approximate the fluctuation rule of the center of gravity of the human body; the driving motor is provided with a fixing part and a driving part, the driving part is fixedly connected with the connecting part of the amplitude adjusting piece 50, the cushion block 80 is installed on the base main body 10, and the fixing part of the driving motor is installed on the cushion block 80. Install driving motor on cushion 80, avoid driving motor to rotate the influence that the vibration that the in-process produced led to the fact the experiment, be favorable to experimental normal clear.
The linkage mechanism 40 comprises a linkage frame body 41, a first linkage rod 42 and a second linkage rod 43, the linkage frame body 41 is arranged in a triangular shape, the linkage frame body 41 is provided with a first end portion 411, a second end portion 412 and a third end portion 413, the first end portion 411 is hinged to the first linkage rod 42, the second end portion 412 is hinged to the second linkage rod 43, the third end portion 413 is hinged to an adjusting hole 51 in an adjusting portion of the amplitude adjusting piece 50, and one ends, far away from the linkage frame body 41, of the first linkage rod 42 and one end, far away from the linkage frame body 43, of the second linkage rod 43 are movably hinged to the platform main body 20; the third end 413 of the linkage frame body 41 is connected with the selected adjusting hole 51 and performs circular motion by taking the driving part of the driving motor as the center of a circle; the first linkage rod 42 and the second linkage rod 43 are hinged with the linkage frame body 41, so that the rotary motion of the driving motor is converted into linear motion; the driving mechanism 30 drives the amplitude adjusting member 50 to move, and then drives the linkage frame body 41 to move, and further drives the first linkage rod 42 and the second linkage rod 43 to move up and down and swing left and right, and the platform main body 20 does not tilt back and forth and tilt left and right but only moves up and down under the guiding action of the guiding mechanism 60.
Be equipped with first vertical slide bearing 70 and second vertical slide bearing 71 on the platform main part 20, the one end that the linkage frame body 41 was kept away from to first gangbar 42 is articulated with first vertical slide bearing 70, the one end that the linkage frame body 41 was kept away from to second gangbar 43 is articulated with second vertical slide bearing 71. Through being equipped with vertical slide bearing, reduced the sliding friction power between gangbar and the platform main part 20, improved the flexibility ratio of gangbar motion simultaneously, made the platform main part 20 remove more smoothly.
The working method of the vibration test bed comprises the following steps:
a. before the vibration test bed works, the third end 413 of the linkage frame body 41 of the linkage mechanism 40 is connected with one of the adjusting holes 51;
b. the driving mechanism 30 is started after receiving a starting instruction, and the vibration test bed works;
c. the rotating shaft of the driving motor rotates to drive the amplitude adjusting part 50 to rotate, while the amplitude adjusting part 50 rotates, the third end 413 of the linkage frame body 41 performs circular motion by taking the rotating shaft of the driving motor as a circle center and taking the selected adjusting hole 51 to the rotating shaft of the driving motor as a radius, the first linkage rod 42 and the second linkage rod 43 move along with the linkage frame body 41, and the platform main body 20 performs vertical motion under the guiding action of the guiding mechanism 60;
d. before the next vibration test bed works, the vibration amplitude of the vibration test bed is adjusted according to test requirements, the corresponding adjusting hole 51 is selected through measurement, the third end 413 of the linkage frame body 41 is connected with the selected adjusting hole 51, and then the steps b-c are repeated.
The vibration test bed provided by the invention can freely adjust the vertical vibration amplitude of the test bed by connecting different adjusting holes 51 on the amplitude adjusting piece 50, is convenient for the test bed to carry out multi-contrast test, and improves the test accuracy; the design and installation of the vibration test bed are suitable for testing and simulating small loads, and the motion state of the small loads under various vertical vibration conditions can be completed, for example, the load backpack vibrates vertically along with the gravity center when a human body walks.
The above embodiments are provided to illustrate, reproduce and deduce the technical solutions of the present invention, and to fully describe the technical solutions, the objects and the effects of the present invention, so as to make the public more thoroughly and comprehensively understand the disclosure of the present invention, and not to limit the protection scope of the present invention.
The above examples are not intended to be exhaustive of the invention and there may be many other embodiments not listed. Any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (10)
1. Vibration test platform, its characterized in that, including base main part, platform main part, actuating mechanism, link gear and amplitude control spare, actuating mechanism locates in the base main part, amplitude control spare has connecting portion and regulation portion, amplitude control spare's connecting portion and actuating mechanism are connected, be equipped with a plurality of regulation holes in amplitude control spare's the regulation portion, link gear's one end and regulation jogged joint, the other end is connected with the platform main part, swing joint between platform main part and the base main part.
2. The vibration testing stand of claim 1, wherein the plurality of adjustment holes are uniformly distributed on the same straight line, and the plurality of adjustment holes are arranged at equal intervals.
3. A vibration testing stand according to claim 1, wherein the base body is provided with a guide mechanism, and the platform body is movably connected with the base body through the guide mechanism.
4. A vibration test bed as claimed in claim 3, wherein the base main body includes a first base plate, a second base plate, a third base plate, a fourth base plate and a fifth base plate, the first base plate, the second base plate, the third base plate and the fourth base plate are respectively provided with at least one guide rail, a plurality of guide rails are vertically arranged, each guide rail is movably connected with a connecting rod, the platform main body is connected with the guide rails through the connecting rods, and the guide rails and the connecting rods constitute the guide mechanism.
5. The vibration test bench of claim 4, wherein the fifth base plate is horizontally arranged, the first base plate, the second base plate, the third base plate and the fourth base plate are vertically arranged on the fifth base plate, the first base plate and the third base plate are oppositely arranged, one side of the first base plate is connected with the second base plate, the other side of the first base plate is connected with the fourth base plate, the second base plate and the fourth base plate are also oppositely arranged, a base main body with an opening at the top and a movable cavity is formed among the first base plate, the second base plate, the third base plate, the fourth base plate and the fifth base plate, and the driving mechanism is positioned in the movable cavity.
6. A vibration test bed as claimed in claim 4, wherein the guide rail is provided with slide blocks, the slide blocks are arranged between the connecting rod and the guide rail, the slide blocks are movably connected with the guide rail, the slide blocks are fixedly connected with the connecting rod, at least two slide blocks are provided, and a plurality of slide blocks are distributed at equal intervals along the guiding direction of the guide rail.
7. The vibration test bench according to any one of claims 1 to 6, wherein the linkage mechanism comprises a linkage frame body, a first linkage rod and a second linkage rod, the linkage frame body is arranged in a triangular shape, the linkage frame body has a first end portion, a second end portion and a third end portion, the first end portion is connected with the first linkage rod, the second end portion is movably connected with the second linkage rod, the third end portion is movably connected with the adjusting portion of the amplitude adjusting member, and one ends of the first linkage rod and the second linkage rod, which are far away from the linkage frame body, are movably connected with the platform main body.
8. The vibration test bench of claim 7, wherein a first vertical sliding bearing and a second vertical sliding bearing are arranged on the platform main body, the end of the first linkage rod away from the linkage frame body is hinged with the first vertical sliding bearing, and the end of the second linkage rod away from the linkage frame body is hinged with the second vertical sliding bearing.
9. A vibration testing stand according to any one of claims 1 to 6, wherein the driving mechanism includes a driving motor having a fixing portion and a driving portion, the driving portion is fixedly connected to the connecting portion of the amplitude adjusting member, a pad is provided on the base main body, and the fixing portion of the driving motor is mounted on the pad.
10. The working method of the vibration test bed is characterized by comprising the following steps of:
a. before the vibration test bed works, the linkage mechanism is connected with the adjusting hole;
b. the driving mechanism is started after receiving a starting instruction, and the vibration test bed works;
c. the driving mechanism drives the amplitude adjusting piece to move, and the amplitude adjusting piece drives the linkage mechanism to move while moving, so that the platform main body is driven to move on the base main body;
d. and c, before the next vibration test table works, adjusting the vibration amplitude of the vibration test table according to test requirements, selecting a corresponding adjusting hole through measurement, connecting the linkage mechanism with the selected adjusting hole, and repeating the steps b-c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293674.4A CN110864861A (en) | 2019-12-16 | 2019-12-16 | Vibration test bed and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293674.4A CN110864861A (en) | 2019-12-16 | 2019-12-16 | Vibration test bed and working method thereof |
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| Publication Number | Publication Date |
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| CN110864861A true CN110864861A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911293674.4A Pending CN110864861A (en) | 2019-12-16 | 2019-12-16 | Vibration test bed and working method thereof |
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| CN (1) | CN110864861A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678682A (en) * | 2020-05-27 | 2020-09-18 | 哈尔滨工业大学 | Suspension isolation mechanism test platform equipment |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
-
2019
- 2019-12-16 CN CN201911293674.4A patent/CN110864861A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678682A (en) * | 2020-05-27 | 2020-09-18 | 哈尔滨工业大学 | Suspension isolation mechanism test platform equipment |
| CN111678682B (en) * | 2020-05-27 | 2022-07-19 | 哈尔滨佩同科技发展有限公司 | Suspension isolation mechanism test platform equipment |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
| CN113189203B (en) * | 2021-04-28 | 2022-04-05 | 安徽蓝格利通新材应用股份有限公司 | Noise test system for vibration damping pad |
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