CN112213063B - Free boundary simulation device for horizontal vibration experiment - Google Patents
Free boundary simulation device for horizontal vibration experiment Download PDFInfo
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- CN112213063B CN112213063B CN202011084954.7A CN202011084954A CN112213063B CN 112213063 B CN112213063 B CN 112213063B CN 202011084954 A CN202011084954 A CN 202011084954A CN 112213063 B CN112213063 B CN 112213063B
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Abstract
The invention discloses a free boundary simulation device for a horizontal vibration experiment, which belongs to the technical field of mechanical vibration and noise control and aims to solve the problem that the existing experiment device cannot meet the actual requirements of a horizontal vibration test experiment in the technical research field of three-dimensional vibration reduction and isolation. The invention provides a new thought for the research of the three-way vibration reduction and isolation technology, provides effective technical support for the popularization and application of novel high-precision equipment, and has important theoretical and practical significance.
Description
Technical Field
The invention belongs to the technical field of mechanical vibration and noise control, and particularly relates to a free boundary simulation device for a horizontal vibration experiment.
Background
The vibration test experiment is a necessary means for researching mechanical vibration and noise control technology, wherein simulation and realization of boundary conditions of a tested piece have direct influence on an experiment result. In a common vibration test experiment, boundary simulation means in the vertical direction are abundant, but development of a free boundary simulation device in the horizontal direction is relatively lagged. The requirements of vibration test experiments in the horizontal direction cannot be met, and research on the three-way vibration reduction and isolation technology is severely restricted.
Disclosure of Invention
The invention provides a free boundary simulation device for a horizontal vibration experiment, aiming at solving the problem that the existing experiment device cannot meet the actual requirements of the horizontal vibration test experiment in the technical research field of three-dimensional vibration reduction and isolation;
the utility model provides a free boundary analogue means of horizontal vibration experiment which characterized in that: the simulation device comprises a box body, an upper layer platform assembly, a lower layer platform assembly, an upper layer horizontal adjusting unit and a lower layer horizontal adjusting unit;
the top of the box body is provided with an opening, the upper layer platform assembly and the lower layer platform assembly are arranged in the box body, the bottom of the lower layer platform assembly is fixedly connected to a bottom plate in the box body, the bottom of the upper layer platform assembly is fixedly connected to a platform surface of the lower layer platform assembly, the lower layer platform assembly is connected with one group of opposite inner side walls in the box body through the lower layer horizontal adjusting unit, and the upper layer platform assembly is connected with the other group of opposite inner side walls in the box body through the upper layer horizontal adjusting unit;
further, the lower platform assembly comprises a lower platform and two lower guide rail units;
the lower guide rail unit comprises a first guide rail and two first sliding blocks, the two first sliding blocks are arranged on the first guide rail, and the two first sliding blocks are connected with the first guide rail in a sliding manner;
two lower guide rail units are arranged in parallel relatively, the bottom of a guide rail in each lower guide rail unit is fixedly connected with a bottom plate in the box body, the lower platform is arranged on the two lower guide rail units, the bottom of the lower platform is fixedly connected with each sliding block, and the lower platform is connected with a group of opposite inner side walls in the box body through the lower horizontal adjusting unit. (ii) a
Furthermore, the lower-layer horizontal adjusting unit comprises two lower spring groups, each lower spring group comprises two lower springs, the axes of the two lower springs are arranged in parallel, the two lower spring groups are respectively arranged on two opposite sides of the lower platform, one end of each lower spring is fixedly connected with one side of the lower platform, and the other end of each lower spring is fixedly connected with the inner wall of the corresponding box body;
further, the upper platform assembly comprises an upper platform and two upper guide rail units;
the upper guide rail unit comprises a second guide rail and two second sliding blocks, the two second sliding blocks are arranged on the second guide rail, and the two second sliding blocks are connected with the second guide rail in a sliding manner;
the two upper guide rail units are arranged in parallel relatively, the bottom of a second guide rail in each upper guide rail unit is fixedly connected with the upper surface of the lower platform, the upper platform is arranged on the two upper guide rail units, the bottom of the upper platform is fixedly connected with each second sliding block, and the upper platform is connected with the other group of opposite inner side walls in the box body through the upper horizontal adjusting unit;
furthermore, the upper level adjusting unit comprises two upper spring groups, each upper spring group comprises two upper springs, the axes of the two upper springs are arranged in parallel, the two upper spring groups are respectively arranged on two opposite sides in the upper platform, one end of each upper spring is fixedly connected with one side of the upper platform, and the other end of each upper spring is fixedly connected with the inner wall of the corresponding box body;
furthermore, the axis of each upper spring and the axis of each lower spring are both vertically arranged, and the center line of each first guide rail along the length extension direction is vertically arranged with the center line of each second guide rail along the length extension direction;
furthermore, the first sliding rail is fixedly connected with a bottom plate of the box body through a bolt, and the second sliding rail is fixedly connected with a table top of the lower platform through a bolt;
furthermore, the first sliding block is fixedly connected with the lower platform through a bolt, and the second sliding block is fixedly connected with the upper platform through a bolt;
compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a free boundary simulation device for a horizontal vibration experiment, which ensures that the displacements of an upper platform and a lower platform are orthogonal and do not interfere with each other. This ensures that the measured test data is orthogonal, and is essential for a vibration test in the orthogonal direction in the horizontal plane.
2. The design of the upper spring and the lower spring with different rigidities is beneficial to research and exploration of free boundary simulation conditions aiming at test pieces with different weights, and has guiding function and reference value for designing free boundary simulation devices of horizontal vibration experiments with different magnitudes.
3. The invention improves the development level of the horizontal direction free boundary simulation device, meets the requirements of vibration test experiments in two orthogonal directions in a horizontal plane, lays a solid foundation for experimental research of a three-way vibration reduction and isolation technology, and can effectively incubate the novel three-way vibration reduction and isolation device.
Drawings
FIG. 1 is a schematic main section of the apparatus of the present invention;
FIG. 2 is a schematic side cross-sectional view of the apparatus of the present invention;
FIG. 3 is a schematic top view of the apparatus of the present invention;
the device comprises a box body 1, an upper platform 2, an upper guide rail 3, a lower platform 4, a simulation test piece 5, a lower guide rail 6, a lower spring 7 and an upper spring 8.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and provides a free boundary simulation device for a horizontal vibration experiment, which includes a box 1, an upper stage assembly, a lower stage assembly, an upper level adjustment unit, and a lower level adjustment unit;
the top of box 1 is the opening setting, and upper platform subassembly and lower floor's platform subassembly all set up in box 1, and the bottom rigid coupling of lower floor's platform subassembly is on the bottom plate in box 1, and the bottom rigid coupling of upper platform subassembly is on the platform face of lower floor's platform subassembly, and lower floor's platform subassembly passes through lower floor's level adjustment unit and links to each other with a set of relative inside wall in box 1, and upper platform subassembly passes through upper level adjustment unit and links to each other with another relative inside wall of group in box 1.
The embodiment provides a free boundary simulation device for a horizontal vibration experiment, and the device ensures that the displacement of an upper platform and the displacement of a lower platform are orthogonal and do not interfere with each other. The invention designs the upper spring and the lower spring with different rigidity, is favorable for researching and exploring free boundary simulation conditions aiming at test pieces with different weights, has guiding function and reference value for designing free boundary simulation devices of horizontal vibration experiments with different magnitudes, improves the development level of the free boundary simulation devices in the horizontal direction, meets the requirements of vibration test experiments in two orthogonal directions in the horizontal plane, lays a solid foundation for experimental research of a three-dimensional vibration reduction and isolation technology, and effectively hatches a novel three-dimensional vibration reduction and isolation device.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the lower deck assembly according to the first embodiment, which includes a lower deck 4 and two lower rail units 6;
the lower guide rail unit 6 comprises a first guide rail and two first sliding blocks, the two first sliding blocks are arranged on the first guide rail, and the two first sliding blocks are connected with the first guide rail in a sliding manner;
two lower rail unit 6 are parallel arrangement relatively, and the bottom of a guide rail in every lower rail unit 6 and the bottom plate fixed connection in the box 1, lower platform 4 sets up on two lower rail unit 6, and the bottom of lower platform 4 and every slider are fixed connection, and lower platform 4 links to each other through a set of relative inside wall in lower floor's level (l) ing unit and the box 1. Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the lower horizontal adjustment unit described in the second embodiment, in the present embodiment, the lower horizontal adjustment unit includes two lower spring sets, each lower spring set includes two lower springs 7, axes of the two lower springs 7 are arranged in parallel, the two lower spring sets are respectively arranged on two opposite sides of the lower platform 4, one end of each lower spring 7 is fixedly connected to one side of the lower platform 4, and the other end of each lower spring 7 is fixedly connected to the inner wall of the corresponding box 1. The other components and the connection mode are the same as those of the second embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the upper deck assembly according to the third embodiment, and in the present embodiment, the upper deck assembly includes an upper deck 2 and two upper rail units 3;
the upper guide rail unit 3 comprises a second guide rail and two second sliding blocks, the two second sliding blocks are arranged on the second guide rail, and the two second sliding blocks are connected with the second guide rail in a sliding manner;
two upper rail unit 3 parallel arrangement relatively, and the bottom of No. two guide rails in every upper rail unit 3 is connected with the last fixed surface of lower platform 4, and upper platform 2 sets up on two upper rail unit 3, and the bottom of upper platform 2 is fixed connection with every No. two sliders, and upper platform 2 links to each other through another relative inside wall of group in upper horizontal adjustment unit and the box 1. Other components and connection modes are the same as those of the third embodiment.
The embodiment is described with reference to the second embodiment and the fourth embodiment, where the simulation test piece 5 is a gravity weight, and when the simulation test piece 5 acts on the experimental device, the experimental device generates horizontal vibration under the action of the simulation test piece 5, and the vibration is visually reflected by longitudinal movement and lateral movement of the platform in the horizontal plane, so as to visually determine whether the device can simulate the free boundary of the test piece in two orthogonal directions in the horizontal plane.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the upper level adjustment unit according to the fourth embodiment, in the present embodiment, the upper level adjustment unit includes two upper spring sets, each upper spring set includes two upper springs 8, axes of the two upper springs 8 are arranged in parallel, the two upper spring sets are respectively arranged on two opposite sides of the upper platform 2, one end of each upper spring 8 is fixedly connected to one side of the upper platform 2, and the other end of each upper spring 8 is fixedly connected to the inner wall of the corresponding box 1. The other components and the connection mode are the same as those of the fourth embodiment.
The third embodiment and the fifth embodiment are combined to describe the present embodiment, and the lower spring 7 realizes the small-amplitude free reciprocating motion of the lower platform 4 and the upper assembly in the corresponding linear displacement direction; the upper springs 8 allow the upper platform 2 and upper assembly to reciprocate freely and to a small extent in a direction orthogonal to the lower platform 4.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the upper spring 8 and the lower spring 7 according to the fifth embodiment, in the present embodiment, an axis of each upper spring 8 and an axis of each lower spring 7 are both vertically disposed, and a center line of each first guide rail in the length extending direction is vertically disposed with a center line of each second guide rail in the length extending direction. The other components and the connection mode are the same as the fifth embodiment mode.
The seventh embodiment: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the first slide rail and the second slide rail according to the sixth embodiment, in the present embodiment, the first slide rail is fixedly connected to the bottom plate of the box body 1 by a bolt, and the second slide rail is fixedly connected to the top surface of the lower platform 4 by a bolt. Other components and connection modes are the same as those of the sixth embodiment.
In this embodiment, slide rail and No. two slide rails all can replace, along with the increase of experiment number of times slide rail both sides are inevitable to have some wearing and tearing, influence its slip smoothness nature, are convenient for change through bolted connection, have higher replaceability, and can not influence other parts of experimental apparatus.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the first slider and the second slider described in the seventh embodiment, in the present embodiment, the first slider is fixedly connected to the lower platform 4 by a bolt, and the second slider is fixedly connected to the upper platform 2 by a bolt. The other components and the connection mode are the same as those of the seventh embodiment.
In this embodiment, a slider and No. two sliders all can be replaced, along with the increase of experiment number of times slider and the contact surface of slide rail wear to some extent inevitable, appear card pause and bite when sliding, influence its slip smoothness nature, be convenient for change through bolted connection, have higher replaceability, and can not influence other parts of experimental apparatus.
Principle of operation
When the device is used, firstly, a simulation test piece 5 is placed on an upper platform 2, at the moment, the simulation test piece 5 is excited by a vibration exciter, slight reciprocating motion can be performed on the simulation test piece 5 in the longitudinal direction and the transverse direction on the horizontal plane under the excitation effect, the slight reciprocating motion is determined by the motion trend of the upper platform 2 or the lower platform 4 relative to the bottom of the box body 1 (the relative position of the simulation test piece 5 and the upper platform 2 is not changed by default when the simulation test piece 5 is placed on the upper platform 2), as shown in fig. 3, the lower platform 4 is used for realizing left and right movement, the upper platform 2 is used for realizing front and back movement, and after an excitation signal disappears, the upper platform 2 and the lower platform 4 are respectively reset through corresponding spring units, so that the initial state of the device is recovered.
Claims (4)
1. The utility model provides a free boundary analogue means of horizontal vibration experiment which characterized in that: the simulation device comprises a box body (1), an upper layer platform assembly, a lower layer platform assembly, an upper layer horizontal adjusting unit and a lower layer horizontal adjusting unit;
the top of the box body (1) is provided with an opening, the upper layer platform assembly and the lower layer platform assembly are both arranged in the box body (1), the bottom of the lower layer platform assembly is fixedly connected to a bottom plate in the box body (1), the bottom of the upper layer platform assembly is fixedly connected to a platform surface of the lower layer platform assembly, the lower layer platform assembly is connected with one group of opposite inner side walls in the box body (1) through the lower layer horizontal adjusting unit, and the upper layer platform assembly is connected with the other group of opposite inner side walls in the box body (1) through the upper layer horizontal adjusting unit;
the lower platform assembly comprises a lower platform (4) and two lower guide rail units (6);
the lower guide rail unit (6) comprises a first guide rail and two first sliding blocks, the two first sliding blocks are arranged on the first guide rail, and the two first sliding blocks are connected with the first guide rail in a sliding manner;
the two lower guide rail units (6) are arranged in parallel relatively, the bottom of a first guide rail in each lower guide rail unit (6) is fixedly connected with a bottom plate in the box body (1), the lower platform (4) is arranged on the two lower guide rail units (6), the bottom of the lower platform (4) is fixedly connected with each first sliding block, and the lower platform (4) is connected with a group of opposite inner side walls in the box body (1) through the lower-layer horizontal adjusting unit;
the lower-layer horizontal adjusting unit comprises two lower spring groups, each lower spring group comprises two lower springs (7), the axes of the two lower springs (7) are arranged in parallel, the two lower spring groups are respectively arranged on two opposite sides in the lower platform (4), one end of each lower spring (7) is fixedly connected with one side of the lower platform (4), and the other end of each lower spring (7) is fixedly connected with the inner wall of the corresponding box body (1);
the upper-layer platform assembly comprises an upper platform (2) and two upper guide rail units (3);
the upper guide rail unit (3) comprises a second guide rail and two second sliding blocks, the two second sliding blocks are arranged on the second guide rail, and the two second sliding blocks are connected with the second guide rail in a sliding manner;
the two upper guide rail units (3) are arranged in parallel relatively, the bottom of a second guide rail in each upper guide rail unit (3) is fixedly connected with the upper surface of the lower platform (4), the upper platform (2) is arranged on the two upper guide rail units (3), the bottom of the upper platform (2) is fixedly connected with each second sliding block, and the upper platform (2) is connected with the opposite inner side wall of the other group in the box body (1) through the upper horizontal adjusting unit;
the upper level regulating unit comprises two upper spring groups, each upper spring group comprises two upper springs (8), the two upper springs (8) are arranged in parallel, the two upper spring groups are respectively arranged on two opposite sides of the upper platform (2), one end of each upper spring (8) is fixedly connected with one side of the upper platform (2), and the other end of each upper spring (8) is fixedly connected with the inner wall of the corresponding box body (1).
2. The horizontal vibration experiment free boundary simulation device as set forth in claim 1, wherein: the axis of each upper spring (8) and the axis of each lower spring (7) are both arranged vertically, and the center line of each first guide rail in the length extension direction is perpendicular to the center line of each second guide rail in the length extension direction.
3. The horizontal vibration experiment free boundary simulation device as set forth in claim 2, wherein: the first guide rail is fixedly connected with a bottom plate of the box body (1) through a bolt, and the second guide rail is fixedly connected with a table top of the lower platform (4) through a bolt.
4. The horizontal vibration experiment free boundary simulation device as set forth in claim 3, wherein: the first sliding block is fixedly connected with the lower platform (4) through a bolt, and the second sliding block is fixedly connected with the upper platform (2) through a bolt.
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| CN202011084954.7A CN112213063B (en) | 2020-10-12 | 2020-10-12 | Free boundary simulation device for horizontal vibration experiment |
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| CN103359300B (en) * | 2013-08-06 | 2015-08-26 | 北京卫星环境工程研究所 | Satellite is free boundary condition analog machine in-orbit |
| CN103616149B (en) * | 2013-11-22 | 2016-08-17 | 北京卫星环境工程研究所 | Whole star micro-vibration ground experiment free boundary analog supports frequency test method |
| CN104977147B (en) * | 2015-07-13 | 2018-02-09 | 昆明理工大学 | A kind of analogue means of unlimited storehouse waters free boundary |
| CN106124152A (en) * | 2016-08-16 | 2016-11-16 | 安徽新视野科教文化股份有限公司 | A kind of resonance pseudo-experience platform |
| CN108731891B (en) * | 2018-05-30 | 2020-07-31 | 东北大学 | Plane acoustic wave excited vibration device for aircraft wall plate under free boundary and using method |
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