CN115235713B - Double-shell experimental device for researching vibration transmission of vibration isolator in water - Google Patents
Double-shell experimental device for researching vibration transmission of vibration isolator in water Download PDFInfo
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- CN115235713B CN115235713B CN202210893788.8A CN202210893788A CN115235713B CN 115235713 B CN115235713 B CN 115235713B CN 202210893788 A CN202210893788 A CN 202210893788A CN 115235713 B CN115235713 B CN 115235713B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 230000001133 acceleration Effects 0.000 claims abstract description 16
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 238000012546 transfer Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- 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
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The application belongs to the technical field of vibration transmission experimental devices, and particularly relates to a double-shell experimental device for researching vibration transmission of a vibration isolator in water. The device comprises a supporting component, a double-layer column shell component, an excitation component and a data acquisition component; the supporting component comprises a gantry hanging bracket and a hanging spring; the double-layer column shell assembly comprises an outer cylinder shell, an inner cylinder shell and a vibration isolation structure; the excitation assembly includes: a vibration exciting spring and a vibration exciter; the data acquisition assembly includes: a first force sensor, an annular array of acceleration sensors; the double-shell vibration transmission experimental device can conveniently realize the coupling vibration experiment of the double-layer cylindrical shell with the elastic connection, can also be used for measuring or verifying impedance data of various types of vibration isolators and models thereof, can also be used for expanding experimental tests and the like of vibration transmission processes under different media, meets the requirements of various types of fluid loads and vibration transmission characteristics and interaction influence experiments and analysis thereof, and has wide application prospects for multi-field research work.
Description
Technical Field
The application belongs to the technical field of vibration transmission experimental devices, and particularly relates to a double-shell experimental device for researching vibration transmission of a vibration isolator in water.
Background
In the experimental process based on vibration transmission, medium vibration is required to be caused by an excitation device and the like, a vibration transmission path and a scheme are controlled or simulated, and various parameter data in the vibration transmission process are measured and analyzed by a monitoring device such as a sensor and the like, so that the vibration transmission process and characteristics are measured, analyzed and verified; in the double-layer cylindrical shell test device in the existing means, the inner shell and the outer shell are connected through the solid rib plates, so that vibration transmission of the vibration isolator cannot be studied, the same end plates are adopted at the two ends of the inner shell and the outer shell, vibration of the inner shell is directly transmitted to the outer shell through the end plates, and real vibration transmission test data of the vibration isolator cannot be obtained. In addition, the existing double-shell test device is mostly carried out in a water tank or a lake, and cannot be carried out in a laboratory.
Disclosure of Invention
The application aims to provide a double-shell experimental device for researching vibration transmission of a vibration isolator in water, which is convenient and practical, has a simple overall structure, can adapt to vibration transmission experiments of vibration isolators in different mediums, can truly feed back the influence of fluid load on the vibration transmission characteristics of the vibration isolators, and is convenient to operate and measure.
In order to achieve the above purpose, the present application adopts the following technical scheme.
The double-shell experimental device for researching the vibration transmission of the vibration isolator in water comprises a supporting component 1, a double-layer column shell component 2, an excitation component 3 and a data acquisition component 4;
The support assembly 1 comprises a gantry crane 10 and a hanging spring 11; the double-layer column shell component 2 is hoisted on a cross beam of the gantry crane 10 through a hanging spring 11;
The double-layer column shell assembly 2 comprises an outer column shell 20, an inner column shell 21 and a vibration isolation structure; the outer cylinder shell 20 is of a cylinder structure, and a water inlet and outlet 20a is arranged at the bottom or on the side surface of the outer cylinder shell 20; the inner cylinder shell 21 is arranged inside the outer cylinder shell 20 and is coaxially arranged with the outer cylinder shell 20; the vibration isolation structure includes a plurality of vibration isolator sets 22 disposed between the inner housing 21 and the outer housing 20;
The excitation assembly 3 includes: a vibration exciting spring 30 and a vibration exciter 31; the exciting spring 30 is hung at the top of the inner wall of the inner cylinder shell 21, the exciter 31 is fixed at the lower end of the exciting spring 30, and an exciting rod 31a of the exciter 31 is vertically downwards directed to the bottom of the inner wall of the inner cylinder shell 21;
The data acquisition assembly 4 comprises: a first force sensor 40, an annular array of acceleration sensors;
The first force sensor 40 is arranged between the lower end of the excitation rod 31a and the inner wall of the inner cylinder shell 21;
The acceleration sensor annular arrays are distributed on a plurality of vertical measuring surfaces e which are perpendicular to the axis of the inner cylinder shell 21, and the vertical measuring surfaces e are arranged at equal intervals;
The acceleration sensor annular array comprises a plurality of acceleration sensors, and the acceleration sensors are arranged on the outer walls of the outer cylinder shell 20 and the inner cylinder shell 21 in an annular array around the axis of the inner cylinder shell 21.
In a further improved or preferred embodiment of the double-shell experimental device for researching the vibration transmission of the vibration isolator in water, a plurality of vibration isolator mounting plates 23 are correspondingly arranged on the outer wall of the inner cylinder shell 21 and the inner wall of the outer cylinder shell 20, the vibration isolator group 22 comprises a plurality of vibration isolators, the vibration isolators are arranged on the vibration isolator mounting plates 23 through bolt groups, and an adjusting base plate 24 is arranged between the vibration isolators and the vibration isolator mounting plates 23.
A further improvement or preferred embodiment of the foregoing double hull experimental setup for studying vibration transfer of vibration isolator in water, the vibration isolator stack 22 comprises: the first vibration isolators 22a are arranged at the highest points of the outer walls at the two ends of the inner cylinder shell 21, and the two second vibration isolators 22b are arranged below the first vibration isolators 22a and symmetrically at the two sides of the vertical plane f; the vertical plane f is a vertical plane passing through the central axis of the inner cylinder housing 21, and the two second vibration isolators 22b form a 20 ° center angle with the central axis of the inner cylinder housing 21.
In the further improvement or the preferred embodiment of the double-shell experimental device for researching the vibration transmission of the vibration isolator in water, the outer barrel shell 20 and the inner barrel shell 21 are respectively composed of an annular barrel body and round end covers positioned at two ends of the annular barrel body, the annular end covers are fixed at two ends of the annular barrel body through bolt groups, and the two ends of the inner barrel shell 21 and the outer barrel shell 20 are not contacted with each other.
In a further modification or preferred embodiment of the double-shell experimental apparatus for studying vibration transmission of the vibration isolator in water, the plurality of suspension springs 11 are uniformly arranged on the top of the outer cylinder shell 20 so as to keep the outer cylinder shell 20 horizontal.
A further improvement or preferred embodiment of the foregoing double-shell experimental setup for studying vibration transfer of vibration isolator in water further comprises a nacelle penetrating structure comprising an L-tube 40, a connecting flange 41, an outer insert 42, an inner insert 43, a double-ended socket 44;
one end of the outer cylinder shell 20 is provided with a wire outlet hole 20k, and the same end of the inner cylinder shell 21 is correspondingly provided with a wire inlet hole 20k; the connecting flange 41 is fixedly arranged in the wire outlet hole 20k, and the double-ended socket 44 is arranged in the wire outlet hole 20k; the end part of the transverse pipe of the L pipe 40 is provided with a flange connecting part 40a which is in butt joint with the connecting flange 41, and the flange connecting part 40a is connected with the connecting flange 41 through a bolt group;
One end of the external plug-in 41 is connected with the cable, the other end of the external plug-in is inserted from the vertical pipe part of the L pipe 40, then the external plug-in passes through the transverse pipe part of the L pipe 40 and is plugged with the double-end socket 44; the inner plug-in piece 43 is positioned in the inner cylinder shell 21, and one end of the inner plug-in piece 43 is plugged with the other end of the vibration exciter and the double-end socket 44 through a cable;
The standpipe portion of the L-pipe 40 is vertically upward, and the standpipe end height is not lower than the top height of the inner wall of the outer cartridge housing 20.
In a further modification or preferred embodiment of the above-described double-shell experimental apparatus for investigating vibration transmission of the vibration isolator in water, a plurality of annular ribs 20b are provided on the inner wall of the outer cylinder shell 20 in an array along the central axis thereof.
In a further improvement or preferred embodiment of the double-shell experimental device for researching the vibration transmission of the vibration isolator in water, the top of the inner edge of the annular rib 20b is provided with a horizontal connecting surface 20c, and the horizontal connecting surfaces 20c of a plurality of annular ribs 20b are welded with a spring mounting plate 20d; the isolator mounting plate 23 is welded to the bottom of the inner edge of the annular rib 20 b.
The beneficial effects are that:
The double-shell experimental device for researching the vibration transmission of the vibration isolator in water can conveniently realize the coupling vibration experiment of the double-layer cylindrical shell with the elastic connection, can also be used for measuring or verifying impedance data of various vibration isolators and models thereof, can also be used for expanding the experimental test of the vibration transmission process under different mediums and the like, meets the requirements of various fluid loads, vibration transmission characteristics and interaction influence experiments and analysis thereof, and has wide application prospects for the research work of multiple fields; when experimental simulation is carried out, the fluid medium between the inner cylinder shell and the outer cylinder shell can be gaseous or liquid medium, the application range is wide, and a fully-closed structure and closed treatment are adopted, so that various experiments can be carried out indoors, the experiment device does not need to be independently arranged in a water tank or a lake for carrying out, and the whole structure of the experiment device is simple, stable in structure and convenient to process and maintain.
Drawings
FIG. 1 is a double-shell experimental setup for studying vibration transfer of a vibration isolator in water;
FIG. 2 is a double-shell experimental setup for studying vibration transfer of a vibration isolator in water;
FIG. 3 is a side view of the mechanism of the double-deck column housing assembly;
FIG. 4 is a cross-sectional view of the mechanism of the double-layered column housing assembly;
FIG. 5 is a cross-sectional view of the outer cartridge shell;
Fig. 6 is a cross-sectional view of a nacelle through structure.
Detailed Description
The present application will be described in detail with reference to specific examples.
The double-shell experimental device for researching the vibration transmission of the vibration isolator in water is mainly used for testing the vibration transmission of the vibration isolator in fluid, is used for unfolding the simulation research of the vibration transmission and the multi-medium transmission process of the vibration isolator in fluid, and is used for replacing the existing schemes such as a pool method, a solid rib plate double-shell device and the like so as to improve the experimental efficiency and enhance the effectiveness of experimental results.
As shown in fig. 1-2, the double-shell experimental device for researching the vibration transmission of the vibration isolator in water mainly comprises a supporting component 1, a double-layer column shell component 2, an excitation component 3 and a data acquisition component 4;
The support assembly 1 comprises a gantry crane 10 and a hanging spring 11; the double-layer column shell component 2 is hoisted on a cross beam of the gantry crane 10 through a hanging spring 11;
In order to ensure that the double-layer column shell component can keep a relatively stable state in the experimental process, so that the experiment can be smoothly carried out, and in the specific implementation, a plurality of hanging springs 11 are uniformly arranged at the top of the outer cylinder shell 20 so as to keep the outer cylinder shell 20 horizontal.
Wherein the double-layer column shell assembly 2 comprises an outer cylinder shell 20, an inner cylinder shell 21 and a vibration isolation structure; the outer cylinder shell 20 is of a cylinder structure, and a water inlet and outlet 20a is arranged at the bottom or on the side surface of the outer cylinder shell 20; the inner cylinder shell 21 is arranged inside the outer cylinder shell 20 and is coaxially arranged with the outer cylinder shell 20;
In order to avoid the transmission of the vibration of the inner shell to the outer shell through the end plates and to achieve the purpose of the transmission of the vibration of the inner shell to the outer shell only through the vibration isolator, as a preferred embodiment, the outer cylinder shell 20 and the inner cylinder shell 21 are composed of an annular cylinder body and circular end covers positioned at two ends of the annular cylinder body, the annular end covers are fixed at two ends of the annular cylinder body through bolt groups, and the two ends of the inner cylinder shell 21 and the outer cylinder shell 20 are not contacted with each other.
Wherein the vibration isolation structure includes a plurality of vibration isolator sets 22 disposed between the inner drum housing 21 and the outer drum housing 20;
As shown in fig. 3 and 4, in order to facilitate measurement and ensure uniform and stable vibration transmission direction, in this embodiment, the vibration isolator group 22 includes: the first vibration isolators 22a are arranged at the highest points of the outer walls at the two ends of the inner cylinder shell 21, and the two second vibration isolators 22b are arranged below the first vibration isolators 22a and symmetrically at the two sides of the vertical plane f; the vertical plane f is a vertical plane passing through the central axis of the inner cylinder housing 21, and the two second vibration isolators 22b form a 20 ° center angle with the central axis of the inner cylinder housing 21.
The excitation assembly 3 includes: a vibration exciting spring 30 and a vibration exciter 31; the exciting spring 30 is hung at the top of the inner wall of the inner cylinder shell 21, the exciter 31 is fixed at the lower end of the exciting spring 30, and an exciting rod 31a of the exciter 31 is vertically downwards directed to the bottom of the inner wall of the inner cylinder shell 21;
The data acquisition assembly 4 comprises: a first force sensor 40, an annular array of acceleration sensors;
The first force sensor 40 is arranged between the lower end of the excitation rod 31a and the inner wall of the inner cylinder shell 21;
The acceleration sensor annular arrays are distributed on a plurality of vertical measuring surfaces e which are perpendicular to the axis of the inner cylinder shell 21, and the vertical measuring surfaces e are arranged at equal intervals;
The acceleration sensor annular array comprises a plurality of acceleration sensors, and the acceleration sensors are arranged on the outer walls of the outer cylinder shell 20 and the inner cylinder shell 21 in an annular array around the axis of the inner cylinder shell 21.
In order to enhance the device strength and thus the vibration isolation effect of the vibration isolator, a plurality of annular ribs 20b are provided in an array along the central axis direction thereof on the inner wall of the outer cylinder housing 20.
The top of the inner edge of the annular rib 20b is provided with a horizontal connecting surface 20c, and the horizontal connecting surfaces 20c of the plurality of annular ribs 20b are welded with a spring mounting plate 20d; the isolator mounting plate 23 is welded to the bottom of the inner edge of the annular rib 20 b.
Wherein, a plurality of isolator mounting plates 23 are correspondingly arranged on the outer wall of the inner cylinder shell 21 and the inner wall of the outer cylinder shell 20, the isolator group 22 comprises a plurality of isolators, the isolators are arranged on the isolator mounting plates 23 through bolt groups, and an adjusting base plate 24 is arranged between the isolators and the isolator mounting plates 23.
In particular, because in the experimental process, the influence of internal medium pressure and pressure wave transmission impact can guarantee that the supporting cable of vibration exciter cable and data acquisition subassembly can pass in and out experimental apparatus smoothly, is unlikely to reveal the medium simultaneously, still includes the cabin structure in this embodiment.
As shown in fig. 4 and 6, the cabin penetrating structure comprises an L pipe 40, a connecting flange 41, an outer plug 42, an inner plug 43 and a double-ended socket 44;
one end of the outer cylinder shell 20 is provided with a wire outlet hole 20k, and the same end of the inner cylinder shell 21 is correspondingly provided with a wire inlet hole 20k; the connecting flange 41 is fixedly arranged in the wire outlet hole 20k, and the double-ended socket 44 is arranged in the wire outlet hole 20k; the end part of the transverse pipe of the L pipe 40 is provided with a flange connecting part 40a which is in butt joint with the connecting flange 41, and the flange connecting part 40a is connected with the connecting flange 41 through a bolt group;
One end of the external plug-in 41 is connected with the cable, the other end of the external plug-in is inserted from the vertical pipe part of the L pipe 40, then the external plug-in passes through the transverse pipe part of the L pipe 40 and is plugged with the double-end socket 44; the inner plug-in piece 43 is positioned in the inner cylinder shell 21, and one end of the inner plug-in piece 43 is plugged with the other end of the vibration exciter and the double-end socket 44 through a cable;
to prevent leakage of the medium inside the outer cartridge housing 20, the standpipe portion of the L-pipe (40) is vertically upward, and the height of the standpipe end is not lower than the height of the top of the inner wall of the outer cartridge housing 20.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the scope of the present application, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.
Claims (8)
1. The double-shell experimental device for researching the vibration transmission of the vibration isolator in water is characterized by comprising a supporting component (1), a double-layer column shell component (2), an excitation component (3) and a data acquisition component (4);
the supporting component (1) comprises a gantry hanger (10) and a hanging spring (11); the double-layer column shell assembly (2) is hoisted on a cross beam of the gantry crane (10) through a hanging spring (11);
The double-layer column shell assembly (2) comprises an outer cylinder shell (20), an inner cylinder shell (21) and a vibration isolation structure; the outer cylinder shell (20) is of a cylinder structure, and a water inlet and outlet (20 a) is arranged at the bottom or on the side surface of the outer cylinder shell (20); the inner cylinder shell (21) is arranged inside the outer cylinder shell (20) and is coaxially arranged with the outer cylinder shell (20); the vibration isolation structure comprises a plurality of vibration isolator groups (22) arranged between an inner cylinder shell (21) and an outer cylinder shell (20);
The excitation assembly (3) comprises: an excitation spring (30) and an exciter (31); the vibration excitation spring (30) is hung at the top of the inner wall of the inner cylinder shell (21), the vibration exciter (31) is fixed at the lower end of the vibration excitation spring (30), and a vibration excitation rod (31 a) of the vibration exciter (31) is vertically downwards directed to the bottom of the inner wall of the inner cylinder shell (21);
The data acquisition assembly (4) comprises: a first force sensor (40), an annular array of acceleration sensors;
the first force sensor (40) is arranged between the lower end of the excitation rod (31 a) and the inner wall of the inner cylinder shell (21);
The acceleration sensors are distributed on a plurality of vertical measuring surfaces (e) which are perpendicular to the axis of the inner cylinder shell (21) in an annular array mode, and the vertical measuring surfaces (e) are arranged at equal intervals;
the acceleration sensor annular array comprises a plurality of acceleration sensors, and the acceleration sensors are arranged on the outer walls of the outer cylinder shell (20) and the inner cylinder shell (21) in an annular array around the axis of the inner cylinder shell (21).
2. The double-shell experimental device for researching vibration transmission of the vibration isolator in water according to claim 1, wherein a plurality of vibration isolator mounting plates (23) are correspondingly arranged on the outer wall of the inner barrel shell (21) and the inner wall of the outer barrel shell (20), the vibration isolator group (22) comprises a plurality of vibration isolators, the vibration isolators are mounted on the vibration isolator mounting plates (23) through bolt groups, and an adjusting base plate (24) is arranged between the vibration isolators and the vibration isolator mounting plates (23).
3. A double-shell experimental device for studying the transmission of vibrations of a vibration isolator in water according to claim 2, characterized in that the vibration isolator group (22) comprises: the first vibration isolators (22 a) are arranged at the highest points of the outer walls at the two ends of the inner cylinder shell (21), and the two second vibration isolators (22 b) are arranged below the first vibration isolators (22 a) and symmetrically arranged at the two sides of the vertical plane (f); the vertical plane (f) is a vertical plane passing through the central shaft of the inner cylinder shell (21), and the two second vibration isolators (22 b) form an angle of 20 degrees with the central axis of the inner cylinder shell (21).
4. The double-shell experimental device for researching vibration transmission of the vibration isolator in water according to claim 1, wherein the outer barrel shell (20) and the inner barrel shell (21) are composed of an annular barrel body and round end covers positioned at two ends of the annular barrel body, the annular end covers are fixed at two ends of the annular barrel body through bolt groups, and the two ends of the inner barrel shell and the two ends of the outer barrel shell are not contacted with each other.
5. A double-shell experimental device for studying vibration transfer of a vibration isolator in water according to claim 1, wherein the plurality of suspension springs (11) are uniformly arranged on the top of the outer shell (20) to keep the outer shell (20) horizontal.
6. A double-shell experimental device for studying the transmission of vibrations of a vibration isolator in water according to claim 1, further comprising a cabin penetrating structure comprising an L-tube (40), a connecting flange (41), an outer insert (42), an inner insert (43), a double-ended socket (44);
One end of the outer cylinder shell (20) is provided with a wire outlet hole (20 k), and the same end of the inner cylinder shell (21) is correspondingly provided with a wire inlet hole (20 k); the connecting flange (41) is fixedly arranged in the wire outlet hole (20 k), and the double-end socket (44) is arranged in the wire inlet hole (20 k); the end part of the transverse pipe of the L pipe (40) is provided with a flange connecting part (40 a) which is in butt joint with the connecting flange (41), and the flange connecting part (40 a) is connected with the connecting flange (41) through a bolt group;
One end of the external plug-in (41) is connected with the cable, the other end of the external plug-in is inserted from a vertical pipe part of the L pipe (40), then the external plug-in passes through a transverse pipe part of the L pipe (40) and is plugged with a double-head socket (44); the inner plug-in piece (43) is positioned in the inner cylinder shell (21), and one end of the inner plug-in piece (43) is plugged with the other end of the vibration exciter and the double-end socket (44) through a cable;
the vertical pipe part of the L pipe (40) is vertically upwards, and the height of the end part of the vertical pipe is not lower than the height of the top of the inner wall of the outer cylinder shell (20).
7. A double-shell experimental device for studying vibration transfer of a vibration isolator in water according to claim 1, wherein a plurality of annular ribs (20 b) are provided on the inner wall of the outer cylinder shell (20) in an array along the axial direction thereof.
8. The double-shell experimental device for researching vibration transmission of a vibration isolator in water according to claim 1, wherein the top of the inner edge of the annular rib (20 b) is provided with a horizontal connecting surface (20 c), and the horizontal connecting surfaces (20 c) of a plurality of annular ribs (20 b) are welded with a spring mounting plate (20 d); the vibration isolator mounting plate (23) is welded at the bottom of the inner edge of the annular rib (20 b);
the bottom of the annular rib (20 b) is provided with water passing holes (20 j).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210893788.8A CN115235713B (en) | 2022-07-27 | 2022-07-27 | Double-shell experimental device for researching vibration transmission of vibration isolator in water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210893788.8A CN115235713B (en) | 2022-07-27 | 2022-07-27 | Double-shell experimental device for researching vibration transmission of vibration isolator in water |
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| CN115235713B true CN115235713B (en) | 2024-06-07 |
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| CN103047336B (en) * | 2012-12-25 | 2014-08-27 | 国家电网公司 | Method for controlling structural acoustic transmission on basis of combined type vibration isolation device |
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- 2022-07-27 CN CN202210893788.8A patent/CN115235713B/en active Active
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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 |
| WO2021203333A1 (en) * | 2020-04-08 | 2021-10-14 | 中广核铀业发展有限公司 | Vibration isolation performance test apparatus and design method therefor, and vibration isolation performance test system |
| CN112729734A (en) * | 2020-12-04 | 2021-04-30 | 中国直升机设计研究所 | Method for measuring transfer characteristics of series-type vibration isolator |
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