CN113295361A - Variable-direction horizontal vibration isolation test experiment table - Google Patents
Variable-direction horizontal vibration isolation test experiment table Download PDFInfo
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- CN113295361A CN113295361A CN202110561008.5A CN202110561008A CN113295361A CN 113295361 A CN113295361 A CN 113295361A CN 202110561008 A CN202110561008 A CN 202110561008A CN 113295361 A CN113295361 A CN 113295361A
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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
- G01M7/04—Monodirectional test stands
Abstract
The invention discloses a direction-variable horizontal vibration isolation test experiment table, which relates to the field of vibration control and comprises a bottom plate, a lifting table part, a two-degree-of-freedom table part, a vibration exciter, an experiment load, an experiment object and the like, wherein the lifting table part, the two-degree-of-freedom table part, the vibration exciter, the experiment load, the experiment object and the like are arranged on the bottom plate. According to the invention, two sets of independent slide block guide rail systems are arranged, so that the experimental object vibration isolator prototype and the experimental load respectively vibrate in the horizontal direction, and the experimental object and the experimental load can stably move without overturning and losing efficacy under the condition of testing a single vibration isolator, so that two vibration signals before and after vibration isolation in the horizontal direction are obtained, and the vibration isolation performance of the vibration isolator prototype is evaluated. According to the invention, the thrust bearing is arranged between the moving platform and the rotating platform, so that the experimental object vibration isolator prototype can be rotationally fixed at different angles relative to the direction of the output force of the vibration exciter, the excitation effect in the horizontal variable direction is realized, and the vibration isolation performance of the vibration isolator in different horizontal directions can be fully researched.
Description
Technical Field
The invention relates to the field of vibration control, in particular to a direction-variable horizontal vibration isolation test experiment table.
Background
The vibration isolator can isolate the adverse effect of the vibration of the ground in the vertical and horizontal directions on the high-precision instrument, generally comprises three to four vibration isolators which are used in a set, and supports a vibration isolation platform together. In the process of developing a high-performance vibration isolator, the horizontal vibration isolation performance of a prototype vibration isolator needs to be tested. Because the vibration isolation platform is heavy in mass and large in size, if complete equipment is directly used as a measured object, a large-scale vibration table is often needed, the test cost of an experiment is greatly increased, and the development period of a product is prolonged. In addition, the horizontal ground vibration often has multiple excitation directions in a plane, and the vibration source information needs to be fully restored during experiments.
At present, the existing vibration experiment table cannot meet the horizontal vibration isolation test requirement of a single vibration isolator. Therefore, a horizontal vibration isolation test bench aiming at a single vibration isolator and capable of simulating the normal working state of the vibration isolator is urgently needed.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention provides the horizontal vibration isolation test experiment table with the variable direction, so that the horizontal vibration isolation performance test of a single vibration isolator in a normal working state is realized, and the economic cost and the time cost of product development are saved to the greatest extent.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a direction-variable horizontal vibration isolation test experiment table comprises a bottom plate, a lifting table part, a two-degree-of-freedom table part, a vibration exciter, an experiment load and an experiment object, wherein the lifting table part, the two-degree-of-freedom table part, the vibration exciter, the experiment load and the experiment object are arranged on the bottom plate; the bottom plate is provided with a threaded hole, and a lifting machine base in the lifting platform part is connected with the bottom plate through bolts and fixed on the periphery of the bottom plate; the guide rail seat in the two-degree-of-freedom platform part is connected with the bottom plate through a bolt and is fixed in the center of the bottom plate; the vibration exciter is connected with the bottom plate through a bolt, is positioned on the same axis with the two-degree-of-freedom table part, and the output end of the vibration exciter is in threaded connection with the loading rod; the experimental load is placed on a lifting table surface in the lifting table part; the experimental object is a vibration isolator prototype and is connected with a rotating platform in the two-degree-of-freedom platform part through a bolt;
the lifting platform part mainly comprises four lifting systems and a sliding block guide rail part; the lifting machines are respectively fixed on respective lifting machine bases through bolts, the screw rods are screwed into the lifting machines through threads, the screw rods can be controlled to move up and down by shaking the hand wheels, the sliding blocks are fixed on the screw rods through adapter flanges, the two guide rails are fixed below the lifting table top through the bolts and penetrate through the sliding blocks, a large round hole is formed in the center of the lifting table top and can allow an experimental object to penetrate through the large round hole so as to avoid interference, and two ends of the two connecting shafts are respectively connected with the two lifting machines through couplers, so that the shaking hand wheels can simultaneously control the two lifting machines to work;
the two-degree-of-freedom platform part mainly comprises a moving and rotating platform and a guide rail sliding block; the two guide rails are respectively fixed on respective guide rail seats through bolts, the sliding block is fixed on the bottom surface of the moving platform through the bolts and penetrates through the guide rails, a thrust bearing is clamped between the rotating platform and the moving platform, the rotating platform and the moving platform can be fixed by inserting the bolts into corresponding hole positions, the rotating platform can rotate at different angles and is fixed on the moving platform under the action of the bearing, the loading rod is screwed into the loading seat through threads, and the loading seat is fixed on the rotating platform through the bolts.
The invention has the beneficial effects that:
1. according to the invention, two sets of independent slide block guide rail systems are arranged, so that the experimental object vibration isolator prototype and the experimental load respectively vibrate in the horizontal direction, and the experimental object and the experimental load can stably move without overturning and losing efficacy under the condition of testing a single vibration isolator, so that two vibration signals before and after vibration isolation in the horizontal direction are obtained, and the vibration isolation performance of the vibration isolator prototype is evaluated.
2. According to the invention, the thrust bearing is arranged between the moving platform and the rotating platform, so that the experimental object vibration isolator prototype can be rotationally fixed at different angles relative to the direction of the output force of the vibration exciter, the excitation effect in the horizontal variable direction is realized, and the vibration isolation performance of the vibration isolator in different horizontal directions can be fully researched.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a schematic view of the construction of the lift table portion of the present invention;
FIG. 3 is a schematic view of the structure of a two-degree-of-freedom stage part according to the present invention;
FIG. 4 is a cross-sectional view of a two degree-of-freedom stage portion of the present invention;
in the figure: 1. a base plate; 2. a lifting platform part; 2-1, lifting the base; 2-2, a hand wheel; 2-3, a lifter; 2-4. a screw rod; 2-5, lifting the table top; 2-6, guide rail; 2-7, sliding block; 2-8, adapting a flange; 2-9. a coupling; 2-10, connecting the shaft; 3. a two degree-of-freedom stage portion; 3-1, a guide rail seat; 3-2, sliding blocks; 3-3, a guide rail; 3-4, moving the platform; 3-5, rotating the platform; 3-6, thrust bearing; 3-7, loading seat; 3-8, a loading rod; 4. carrying out experiment loading; 5. (ii) an experimental subject; 6. a vibration exciter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of describing embodiments of the present invention.
As shown in fig. 1, a variable-direction horizontal vibration isolation test experiment table comprises a bottom plate 1, and a lifting table part 2, a two-degree-of-freedom table part 3, a vibration exciter 6, an experiment load 4 and an experiment object 5 which are arranged on the bottom plate 1; the bottom plate 1 is provided with a threaded hole, and a lifting machine base 2-1 in the lifting platform part 2 is connected with the bottom plate 1 through bolts and fixed around the bottom plate 1; a guide rail seat 3-1 in the two-degree-of-freedom platform part 3 is connected with the bottom plate 1 through a bolt and is fixed in the center of the bottom plate 1; the vibration exciter 6 is connected with the bottom plate 1 through a bolt, is positioned on the same axis with the two-degree-of-freedom platform part 3, and the output end of the vibration exciter is in threaded connection with the loading rod 3-8; the experimental load 4 is placed on a lifting table surface 2-5 in the lifting table part 2; the experimental object 5 is a vibration isolator prototype and is connected with a rotary platform 3-5 in the two-degree-of-freedom platform part 3 through bolts; during the experiment, the lifting table top 2-5 is lowered to a certain height, the weight of the experimental load 4 is completely borne by the experimental object 5 vibration isolator prototype, the loading process is completed, and the lifting table top 2-5 only plays a role in preventing the experimental load 4 from tipping possibly generated in the vibration process; the horizontal exciting force output by the vibration exciter 6 is transmitted to an experimental object 5 through the two-degree-of-freedom platform part 3, the experimental object 5 can horizontally move along the guide rail 3-3 under the action of the slide block 3-2, and the experimental load 4 can horizontally move along the slide block 2-6 under the action of the guide rail 2-6, so that two vibration signals are obtained, and the vibration isolation effect of the experimental object 5 can be tested;
as shown in fig. 2, the lifting platform part 2 mainly comprises four lifting systems and a slide block guide rail part; the lifting machines 2-3 are respectively fixed on respective lifting machine bases 2-1 through bolts, screw rods 2-4 are screwed into the lifting machines 2-3 through threads, the shaking hand wheel 2-2 can control the screw rods 2-4 to move up and down, sliders 2-7 are fixed on the screw rods 2-4 through adapter flanges 2-8, two guide rails 2-6 are fixed below the lifting table top 2-5 through bolts and penetrate through the sliders 2-7, a large round hole is formed in the center of the lifting table top 2-5 and can allow an experimental object 5 to penetrate through the large round hole so as to avoid interference, two ends of two connecting shafts 2-10 are respectively connected with the two lifting machines 2-3 through couplers 2-9, and the shaking hand wheel 2-2 can simultaneously control the two lifting machines to work; when an experiment is carried out, the two hand wheels 2-2 are shaken simultaneously, so that the lifting table-board 2-5 can be controlled to move up and down, the loading and unloading process of the experiment load 4 is completed by matching with the experiment object 5, the huge plane of the lifting table-board 2-5 can prevent the experiment load 4 from tipping in the vibration process, and meanwhile, the experiment load can horizontally move under the action of the guide rail sliding block without influencing the vibration condition of the experiment load 4;
as shown in fig. 3 and 4, the two-degree-of-freedom stage part 3 is mainly composed of a moving and rotating platform and a guide rail slider; the two guide rails 3-2 are respectively fixed on respective guide rail seats 3-1 through bolts, the sliding blocks 3-3 are fixed on the bottom surface of the movable platform 3-4 through bolts and penetrate through the guide rails 3-2, a thrust bearing 3-6 is clamped between the rotary platform 3-6 and the movable platform 3-4, the rotary platform 3-5 and the movable platform 3-4 can be fixed by inserting bolts into corresponding hole positions, the rotary platform 3-5 can be fixed on the movable platform 3-4 in a rotating mode at different angles due to the action of the bearing, the loading rods 3-8 are screwed into the loading seats 3-7 through threads, and the loading seats 3-7 are fixed on the rotary platform 3-5 through bolts; during the experiment, the moving platform 3-4 can move horizontally under the action of the slide block guide rail, the rotating platform 3-5 can change the fixed angle of the experimental object 5 under the action of the thrust bearing 3-6, and the vibration test effect under the excitation of different horizontal directions is realized;
the above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (1)
1. The utility model provides a horizontal vibration isolation test experiment table of variable direction which characterized in that: the device comprises a bottom plate, a lifting platform part, a two-degree-of-freedom platform part, a vibration exciter, an experimental load and an experimental object, wherein the lifting platform part, the two-degree-of-freedom platform part, the vibration exciter, the experimental load and the experimental object are arranged on the bottom plate; the bottom plate is provided with a threaded hole, and a lifting machine base in the lifting platform part is connected with the bottom plate through bolts and fixed on the periphery of the bottom plate; the guide rail seat in the two-degree-of-freedom platform part is connected with the bottom plate through a bolt and is fixed in the center of the bottom plate; the vibration exciter is connected with the bottom plate through a bolt, is positioned on the same axis with the two-degree-of-freedom table part, and the output end of the vibration exciter is in threaded connection with the loading rod; the experimental load is placed on a lifting table surface in the lifting table part; the experimental object is a vibration isolator prototype and is connected with a rotating platform in the two-degree-of-freedom platform part through a bolt;
the lifting platform part mainly comprises four lifting systems and a sliding block guide rail part; the lifting machines are respectively fixed on respective lifting machine bases through bolts, the screw rods are screwed into the lifting machines through threads, the screw rods can be controlled to move up and down by shaking the hand wheels, the sliding blocks are fixed on the screw rods through adapter flanges, the two guide rails are fixed below the lifting table top through the bolts and penetrate through the sliding blocks, a large round hole is formed in the center of the lifting table top and can allow an experimental object to penetrate through the large round hole so as to avoid interference, and two ends of the two connecting shafts are respectively connected with the two lifting machines through couplers, so that the shaking hand wheels can simultaneously control the two lifting machines to work;
the two-degree-of-freedom platform part mainly comprises a moving and rotating platform and a guide rail sliding block; the two guide rails are respectively fixed on respective guide rail seats through bolts, the sliding block is fixed on the bottom surface of the moving platform through the bolts and penetrates through the guide rails, a thrust bearing is clamped between the rotating platform and the moving platform, the rotating platform and the moving platform can be fixed by inserting the bolts into corresponding hole positions, the rotating platform can rotate at different angles and is fixed on the moving platform under the action of the bearing, the loading rod is screwed into the loading seat through threads, and the loading seat is fixed on the rotating platform through the bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110561008.5A CN113295361B (en) | 2021-05-19 | 2021-05-19 | Variable-direction horizontal vibration isolation test experiment table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110561008.5A CN113295361B (en) | 2021-05-19 | 2021-05-19 | Variable-direction horizontal vibration isolation test experiment table |
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| CN113295361A true CN113295361A (en) | 2021-08-24 |
| CN113295361B CN113295361B (en) | 2022-03-11 |
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Citations (5)
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| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| RU2557332C1 (en) * | 2014-05-14 | 2015-07-20 | Олег Савельевич Кочетов | Stand for testing vibration isolation systems |
| CN109058713A (en) * | 2018-08-15 | 2018-12-21 | 中汽研（天津）汽车工程研究院有限公司 | A kind of vibration excitor lifting device for body mode test |
| CN208607014U (en) * | 2018-07-02 | 2019-03-15 | 苏州爱扬汽车零部件有限公司 | A kind of damper detection device |
| CN211085650U (en) * | 2019-11-11 | 2020-07-24 | 科曼车辆部件系统(苏州)有限公司 | Novel durable test of bumper shock absorber device |
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2021
- 2021-05-19 CN CN202110561008.5A patent/CN113295361B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2557332C1 (en) * | 2014-05-14 | 2015-07-20 | Олег Савельевич Кочетов | Stand for testing vibration isolation systems |
| CN104713721A (en) * | 2015-04-10 | 2015-06-17 | 株洲时代新材料科技股份有限公司 | Dynamic performance test platform of vibration isolator system and test method thereof |
| CN208607014U (en) * | 2018-07-02 | 2019-03-15 | 苏州爱扬汽车零部件有限公司 | A kind of damper detection device |
| CN109058713A (en) * | 2018-08-15 | 2018-12-21 | 中汽研（天津）汽车工程研究院有限公司 | A kind of vibration excitor lifting device for body mode test |
| CN211085650U (en) * | 2019-11-11 | 2020-07-24 | 科曼车辆部件系统(苏州)有限公司 | Novel durable test of bumper shock absorber device |
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| 孙法明等: "液压伺服减振器试验台的研制", 《铁道车辆》 * |
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