CN115265987B - Vibration transmission path experimental device - Google Patents
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- CN115265987B CN115265987B CN202210903598.XA CN202210903598A CN115265987B CN 115265987 B CN115265987 B CN 115265987B CN 202210903598 A CN202210903598 A CN 202210903598A CN 115265987 B CN115265987 B CN 115265987B
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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
- G01M7/06—Multidirectional test stands
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The application belongs to the technical field of vibration experimental equipment, and particularly relates to a vibration transmission path experimental device. Comprises an outer cylinder, an inner cylinder, an excitation assembly and a pressure control assembly; the excitation assembly comprises an excitation transition plate, an excitation source and excitation driving equipment; the pressure control assembly comprises a high-pressure source, a first pressure gauge, a pressure reducing valve, a first stop valve, a buffer bottle, a buffer control valve, a second pressure gauge, a second stop valve, a pressure relief valve and an injector; the vibration transmission path experimental device can be used for vibration transmission experiments of multiple vibration sources under different pressures of different mediums, and can also be used for vibration control tests and experiments of various vibration isolators; the experimental device has the advantages of simple integral structure, convenience in processing, assembling and using, and convenience in experiment and monitoring to vibration transmission paths and relevant parameters thereof under different working conditions through the internal shell and the excitation transmission structure.
Description
Technical Field
The application belongs to the technical field of vibration experimental equipment, and particularly relates to a vibration transmission path experimental device.
Background
Along with improvement of noise, vibration and other monitored source control requirements of ship-based equipment, especially stealth equipment in a complex environment, in order to study vibration transmission processes and characteristics of various equipment or structures in different media, a special vibration test pool is often required to be built to be matched with structures such as vibration excitation equipment and the like to carry out experimental test so as to determine vibration transmission data of the corresponding structure or equipment, vibration transmission simulation in complex situations often involves a plurality of vibration sources, media and vibration transmission structures, the conventional vibration test pool is often difficult to meet requirements, and meanwhile, because the vibration test pool is generally a fixed structure facility, the working environment, media flowing and other element information of the corresponding equipment in actual ship navigation is also difficult to effectively simulate, so that experimental results and data deviate from actual results.
Disclosure of Invention
An object of the application is to provide a vibration transmission path experimental apparatus that can be used to carry out the simulation experiment to vibration transmission process between vibration isolation structure and the equipment under different medium and pressure, realizes demonstrating and measuring vibration transmission process, and the flexibility ratio is high simultaneously, can satisfy diversified vibration transmission experimental demand.
In order to achieve the above purpose, the following technical scheme is adopted in the application.
The experimental device for the vibration transmission path comprises an outer cylinder 1, an inner cylinder 2, an excitation assembly and a pressure control assembly;
the outer cylinder 1 and the inner cylinder 2 are of closed structures and are coaxially and horizontally arranged, and the inner cylinder 2 is arranged in the outer cylinder 1; the top of the outer cylinder 1 is provided with an inlet and outlet 1a, and both sides of the outer cylinder are provided with an inlet and outlet 1b;
the urceolus 1 is provided with the location support grillage in, and the location support grillage includes: the horizontal support plate 10 near the bottom of the outer cylinder 1, a plurality of crescent moon plates 11 arranged between the lower end surface of the horizontal support plate 10 and the inner wall of the bottom of the outer cylinder 1, a horizontal positioning plate 12 near the top of the outer cylinder 1, a plurality of fin-shaped plates 13 arranged between the upper end surface of the horizontal positioning plate 12 and the inner wall of the top of the outer cylinder 1, and an axial positioning plate 14 arranged at the front ends of the horizontal support plate 10 and the horizontal positioning plate 12;
the horizontal support plate 10 and the horizontal positioning plate 12 are horizontally and parallelly arranged; the crescent plates 11 and the fin-shaped plates 13 are arranged in an equidistant array and are perpendicular to the central axis of the outer cylinder 1; the axial positioning plate 14 is perpendicular to the central axis of the outer cylinder 1, and the front end of the axial positioning plate is provided with an operation port 14a;
the excitation assembly includes: an excitation transition plate 31 fixed on the inner wall of the inner cylinder 2, an excitation source 30 fixed on the inner wall of the inner cylinder 2, and excitation driving equipment arranged outside the outer cylinder 1; a plurality of vibration isolators 32 provided between the horizontal support plate 10 and the inner cylinder 2 and between the horizontal positioning plate 12 and the inner cylinder 2;
the pressure control assembly includes: a high pressure source 40, a first pressure gauge 41, a pressure reducing valve 42, a first stop valve 43, a buffer bottle 44, a buffer control valve 45, a second pressure gauge 46, a second stop valve 47, a pressure relief valve 48, and an injector 49;
the high-pressure source 40 is communicated with the pressure reducing valve 42 and the first stop valve 43 through pipelines and then is divided into two paths, wherein one path is connected with the buffer bottle 44 through the buffer control valve 45, and the other path is led into the inner cavity of the outer cylinder 1 through the second stop valve 47 and the injector 49; a pressure relief branch leading from between the second shut-off valve 47 and the injector 49 and controlled by a pressure relief valve 48;
the first pressure gauge 41 is used to measure the line pressure on the rear side of the pressure reducing valve 42, and the second pressure gauge 46 is used to measure the line pressure on the front side of the second shut-off valve 47.
In a further improved or preferred embodiment of the vibration transmission path experimental device, two inlet and outlet ports 1a are arranged at the top of the front end of the outer cylinder 1, and two wire inlet and outlet ports 1b are respectively arranged at the left and right obliquely lower parts of the front end of the outer cylinder 1;
the inlet and outlet 1a is provided with a movable cover 1c which can be opened and closed;
the upper cover of the wire inlet and outlet port 1b is provided with a wire inlet and outlet plate 1d, and a plurality of wire inlet and outlet holes are arranged on the wire inlet and outlet plate 1 d.
In a further improved or preferred embodiment of the vibration transmission path experimental device, the left side and the right side of the horizontal support plate 10 are connected with the inner wall of the outer cylinder 1, the arc-shaped edge at the bottom of the crescent plate 11 is connected with the inner wall of the outer cylinder 1, the horizontal support plate 10 and the crescent plate 11 divide the space at the lower side of the horizontal support plate 10 into small cavities with crescent sections, and the crescent plate 11 is provided with transverse through holes 11a for connecting the adjacent small cavities and the small cavities at the two ends with the inner cavity of the outer cylinder 1;
the horizontal support plate 10 is provided with vertical through holes 10a communicated with the small cavities.
Further improvements to the foregoing vibration transmission path experimental apparatus or preferred embodiments, the positioning support plate rack further comprises: a lower rib 15 vertically connected to each crescent plate 11, and an upper rib 16 vertically connected to each fin plate 13; the small cavity is divided into a plurality of independent cavities by the lower rib plate 15, and a transition hole 15a for connecting the independent cavities is arranged on the lower rib plate 15;
the bottommost parts of the crescent plate 11 and the axial positioning plate 14 are provided with diversion holes 11b; the bottom of at least one of the individual cavities is provided with a drain hole 11c.
A further improvement or preferred embodiment of the aforementioned vibration transmission path experimental apparatus is further provided with an attitude control assembly comprising: a spring damper 50 and a height adjusting device 51; the spring damper 50 is provided at the lower side of the rear end of the outer tub 1, and the height adjusting device 51 is provided at the lower side of the front end of the outer tub 1.
In a further development or preferred embodiment of the aforementioned vibration transmission path experimental device, the bottom of the outer cylinder 1 is provided with two connection plates 52, and the spring damper 50 and the height adjusting device 51 are respectively mounted on the connection plates 52.
Further modifications or preferred embodiments of the aforementioned vibration transmission path experimental apparatus, the height adjusting means 51 is referred to as a screw jack.
Further improvement or preferred embodiment of the vibration transmission path experimental device is that the upper and lower sides of the inner cylinder 2 are respectively provided with a horizontal mounting plate 2e;
vibration isolators 32 are disposed in an axial array between the horizontal mounting plate 2e and the horizontal positioning plate 12, the horizontal support plate 10.
In a further improved or preferred embodiment of the vibration transmission path experimental device, a plurality of annular mounting plates 2f are arranged on the inner wall of the inner cylinder 2, and a plurality of annular axial exciting plates 2g are correspondingly arranged on the central axis of the inner cylinder 2;
the excitation transition plates 31 are arranged in an annular array on the axis of the inner cylinder 2, and two ends of each excitation transition plate 31 are respectively connected to the annular mounting plate 2f and the annular axial excitation plate 2g; .
In a further improvement or preferred embodiment of the vibration transmission path experimental device, an excitation source mounting table 2k is fixed on the inner wall of the inner cylinder 2, and an excitation source 30 is mounted on the excitation source mounting table 2k and the annular axial excitation plate 2 g.
The beneficial effects are that:
the vibration transmission path experimental device can be used for vibration transmission experiments of multiple vibration sources under different pressures of different mediums, and can also be used for vibration control tests and experiments of various vibration isolators; the experimental device has the advantages that the whole structure is simple, the processing, the assembly and the use are convenient, the vibration transmission paths and relevant parameters thereof can be conveniently tested and monitored under different working conditions through the internal shell and the excitation transmission structure, and the prior fixed test pool has the characteristics of flexible use, portability and rich functions.
Drawings
FIG. 1 is a schematic diagram of a vibration transmission path experimental apparatus;
FIG. 2 is a schematic diagram of a vibration transmission path experimental apparatus;
FIG. 3 is a schematic view of a positioning support plate rack;
FIG. 4 is a schematic diagram of a second embodiment of a positioning support plate rack;
fig. 5 is a schematic structural view (part) of the excitation assembly.
Detailed Description
The present application is described in detail below with reference to specific examples.
The vibration transmission path experimental device is mainly used for carrying out experimental tests of vibration transmission paths, specific transmission contents and the like, is mainly used as teaching and experimental equipment, and can be used for verifying and testing the characteristics of vibration generated by single or multiple vibration sources of various types and the vibration transmission paths and characteristics thereof in water or air media.
As shown in fig. 1 and 2, the main structure of the experimental device comprises an outer cylinder 1, an inner cylinder 2, an excitation assembly and a pressure control assembly;
the outer cylinder 1 and the inner cylinder 2 are of closed structures and are coaxially and horizontally arranged, and the inner cylinder 2 is arranged in the outer cylinder 1; the top of the outer cylinder 1 is provided with an inlet and outlet 1a, and both sides of the outer cylinder are provided with an inlet and outlet 1b;
in this application, be used for pouring each type of vibration transmission medium according to experimental demand in the space between urceolus 1 and inner tube 2, its concrete vibration parameter data can be collected through setting up equipment such as all kinds of sensors in the urceolus, for the assembly regulation of the inside excitation source of being convenient for and all kinds of structures, be provided with the import and export that supplies personnel to come in and go out, the top sets up personnel and import and export and is favorable to preventing the medium leakage, simultaneously, import and export the position higher during actual implementation, consequently can cooperate cat ladder isotructure so that to use, the business turn over line mouth is used for collecting the data cable business turn over barrel of the all kinds of sensors that control probably need to use in the experimentation.
When it is actually implemented. For convenient assembly and use, the inlet and outlet 1a is arranged at the top of the front end of the outer cylinder 1, and two wire inlet and outlet ports 1b are respectively arranged at the left and right obliquely lower parts of the front end of the outer cylinder 1; the inlet and outlet 1a is provided with a movable cover 1c which can be opened and closed; the upper cover of the wire inlet and outlet port 1b is provided with a wire inlet and outlet plate 1d, and a plurality of wire inlet and outlet holes are arranged on the wire inlet and outlet plate 1 d.
In the concrete implementation, in order to further simplify the assembly and simultaneously reduce the processing difficulty of the barrel structure processing, the inner barrel and the outer barrel can both adopt a mode that the tubular structure is matched with the front end cover and the rear end cover to splice to form a sealed barrel, and due to the relatively large size, the sealed barrel can be connected and fixed by being matched with structures such as a bolt group and the like.
As shown in fig. 3 and 4, the outer cylinder 1 is provided with a positioning support plate frame, and the positioning support plate frame includes: the horizontal support plate 10 near the bottom of the outer cylinder 1, a plurality of crescent moon plates 11 arranged between the lower end surface of the horizontal support plate 10 and the inner wall of the bottom of the outer cylinder 1, a horizontal positioning plate 12 near the top of the outer cylinder 1, a plurality of fin-shaped plates 13 arranged between the upper end surface of the horizontal positioning plate 12 and the inner wall of the top of the outer cylinder 1, and an axial positioning plate 14 arranged at the front ends of the horizontal support plate 10 and the horizontal positioning plate 12;
in particular, in order to better construct a vibration transmission path model, optimize an internal structure, facilitate data acquisition and meet different test requirements, in this embodiment, the left side and the right side of a horizontal support plate 10 are connected with the inner wall of an outer cylinder 1, the arc-shaped edge at the bottom of a crescent plate 11 is connected with the inner wall of the outer cylinder 1, the space at the lower side of the horizontal support plate 10 is divided into small cavities with crescent sections by the horizontal support plate 10 and the crescent plate 11, and transverse through holes 11a for connecting adjacent small cavities and small cavities at two ends with the inner cavity of the outer cylinder 1 are arranged on the crescent plate 11; the horizontal support plate 10 is provided with vertical through holes 10a communicated with the small cavities. The multi-chamber structure extends the detectable range of vibration path transfer and control, and the lateral and vertical vias form paths for direct transfer of media.
The horizontal support plate 10 and the horizontal positioning plate 12 are horizontally and parallelly arranged; the crescent plates 11 and the fin-shaped plates 13 are arranged in an equidistant array and are perpendicular to the central axis of the outer cylinder 1; the axial positioning plate 14 is perpendicular to the central axis of the outer cylinder 1, and the front end of the axial positioning plate is provided with an operation port 14a;
the positioning support plate frame further comprises: a lower rib 15 vertically connected to each crescent plate 11, and an upper rib 16 vertically connected to each fin plate 13; the small cavity is divided into a plurality of independent cavities by the lower rib plate 15, and a transition hole 15a for connecting the independent cavities is arranged on the lower rib plate 15; the bottommost parts of the crescent plate 11 and the axial positioning plate 14 are provided with diversion holes 11b; the bottom of at least one of the individual cavities is provided with a drain hole 11c.
On one hand, the crescent plate and the fin-shaped plate construct an internal vibration transmission space, and meanwhile, the relative position relationship between the inner cylinder body and the outer cylinder body is maintained stable, and meanwhile, configuration management on the vibration isolator to be tested is facilitated. The diversion holes 11b and the drainage holes 11c are used for guiding and cleaning the internal medium, and prevent the medium from being detained in the cavity.
The excitation assembly is used for fixing and installing the excitation source, is used for configuring the position and proper amount of the excitation source according to experimental requirements, and utilizes the excitation source to simulate the state of the vibration emission source, and the main structure comprises: an excitation transition plate 31 fixed on the inner wall of the inner cylinder 2, an excitation source 30 fixed on the inner wall of the inner cylinder 2, and excitation driving equipment arranged outside the outer cylinder 1; a plurality of vibration isolators 32 provided between the horizontal support plate 10 and the inner cylinder 2 and between the horizontal positioning plate 12 and the inner cylinder 2;
as shown in fig. 5, in order to facilitate adjustment of the position of the excitation source and simultaneously enable vibration to be uniformly transmitted along the cylinder body, a plurality of annular mounting plates 2f are arranged on the inner wall of the inner cylinder 2, and a plurality of annular axial excitation plates 2g are correspondingly arranged on the central axis of the inner cylinder 2;
the excitation transition plates 31 are arranged in an annular array on the axis of the inner cylinder 2, and two ends of each excitation transition plate 31 are respectively connected to the annular mounting plate 2f and the annular axial excitation plate 2g; .
An excitation source mounting table 2k is fixed on the inner wall of the inner cylinder 2, and an excitation source 30 is mounted on the excitation source mounting table 2k and the annular axial excitation plate 2 g.
In order to fix the vibration isolator conveniently, the upper side and the lower side of the inner cylinder 2 are respectively provided with a horizontal mounting plate 2e; vibration isolators 32 are disposed in an axial array between the horizontal mounting plate 2e and the horizontal positioning plate 12, the horizontal support plate 10.
The pressure control assembly is used for adjusting the medium pressure to satisfy experimental demand, and the pressure control assembly includes: a high pressure source 40, a first pressure gauge 41, a pressure reducing valve 42, a first stop valve 43, a buffer bottle 44, a buffer control valve 45, a second pressure gauge 46, a second stop valve 47, a pressure relief valve 48, and an injector 49;
the high-pressure source 40 is communicated with the pressure reducing valve 42 and the first stop valve 43 through pipelines and then is divided into two paths, wherein one path is connected with the buffer bottle 44 through the buffer control valve 45, and the other path is led into the inner cavity of the outer cylinder 1 through the second stop valve 47 and the injector 49; a pressure relief branch leading from between the second shut-off valve 47 and the injector 49 and controlled by a pressure relief valve 48;
the first pressure gauge 41 is used to measure the line pressure on the rear side of the pressure reducing valve 42, and the second pressure gauge 46 is used to measure the line pressure on the front side of the second shut-off valve 47.
In order to be convenient for adjust the device inclination, still be provided with gesture control assembly in this embodiment, include: a spring damper 50 and a height adjusting device 51; the spring damper 50 is provided at the lower side of the rear end of the outer tub 1, and the height adjusting device 51 is provided at the lower side of the front end of the outer tub 1. As a preferred embodiment, the height adjusting means 51 may use a screw jack.
The bottom of the outer tub 1 is provided with two connection plates 52, and the spring damper 50 and the height adjusting device 51 are respectively mounted on the connection plates 52.
As a preferred embodiment, the height adjusting means 51 may use a screw jack.
To facilitate an understanding of the other supplementary notes of the present application:
1. the device is mainly used for: measuring vibration contributions transmitted to the outer cylinder through elastic connection (comprising vibration isolators and flexible connecting pipes) and acoustic media (water, air and the like) under different media and pressures, and testing and verifying corresponding vibration transmission paths and characteristics;
2. the basic requirements are as follows: according to the pressure container designed according to the relevant national standard, different acoustic media (air and water) can be borne between the outer cylinder and the inner cylinder to bear 1MPa, and sound pressure measurement in different media can be carried out through hydrophones and the like;
3. vibration excitation is commonly used: the inside of the inner cylinder is always an air medium, and excitation is performed through a vibration exciter arranged in the inner cylinder, wherein excitation sources can be arranged on an excitation transition plate, an excitation source mounting table and the inner wall of the inner cylinder (2);
4. necessary sensor and cabin penetrating mode thereof: the cabin penetrating plugs can be purchased and penetrated out through openings on cabin penetrating plates on two sides of the outer cylinder, so that cabin penetrating connection of the sensor is realized;
5. transmission Path Analysis (TPA), which is used to identify and evaluate the propagation of individual structural paths and acoustic medium paths of energy from an excitation source to a target point, with a fundamental modularity of source-path-target point modularity; the calculation and simulation method can be based on a load-response model (namely a traditional TPA), a stiffness-setting method, an OPAX method and the like;
6. other common structures and configurations are configured in accordance with existing laboratory instrument standards.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the scope of protection 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 solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (8)
1. The experimental device for the vibration transmission path is characterized by comprising an outer cylinder (1), an inner cylinder (2), an excitation assembly and a pressure control assembly;
the outer cylinder (1) and the inner cylinder (2) are of closed structures and are coaxially and horizontally arranged, and the inner cylinder (2) is arranged in the outer cylinder (1); an inlet and outlet (1 a) for personnel to go in and out is arranged at the top of the outer cylinder (1), and inlet and outlet ports (1 b) are arranged at two sides of the outer cylinder;
a positioning support plate frame is arranged in the outer cylinder (1), and comprises: a horizontal support plate (10) close to the bottom of the outer cylinder (1), a plurality of crescent moon shaped plates (11) arranged between the lower end surface of the horizontal support plate (10) and the inner wall of the bottom of the outer cylinder (1), a horizontal positioning plate (12) close to the top of the outer cylinder (1), a plurality of fin shaped plates (13) arranged between the upper end surface of the horizontal positioning plate (12) and the inner wall of the top of the outer cylinder (1), and an axial positioning plate (14) arranged at the front ends of the horizontal support plate (10) and the horizontal positioning plate (12);
the horizontal supporting plate (10) and the horizontal positioning plate (12) are horizontally and parallelly arranged; the crescent plates (11) and the fin-shaped plates (13) are arranged in an equidistant array and are perpendicular to the central axis of the outer cylinder (1); the axial positioning plate (14) is perpendicular to the central axis of the outer cylinder (1) and the front end of the axial positioning plate is provided with an operation port (14 a);
the excitation assembly includes: an excitation transition plate (31) fixed on the inner wall of the inner cylinder (2), an excitation source (30) fixed on the inner wall of the inner cylinder (2), and excitation driving equipment arranged outside the outer cylinder (1); a plurality of vibration isolators (32) arranged between the horizontal support plate (10) and the inner cylinder (2) and between the horizontal positioning plate (12) and the inner cylinder (2);
the pressure control assembly includes: a high-pressure source (40), a first pressure gauge (41), a pressure reducing valve (42), a first stop valve (43), a buffer bottle (44), a buffer control valve (45), a second pressure gauge (46), a second stop valve (47), a pressure releasing valve (48) and an injector (49);
the high-pressure source (40) is communicated with the pressure reducing valve (42) and the first stop valve (43) through pipelines and then is divided into two paths, one path is connected with the buffer bottle (44) through the buffer control valve (45), and the other path is led into the inner cavity of the outer cylinder (1) through the second stop valve (47) and the injector (49); the device also comprises a pressure relief branch which is led out from between the second stop valve (47) and the injector (49) and is controlled by a pressure relief valve (48);
the first pressure gauge (41) is used for measuring the pipeline pressure at the rear side of the pressure reducing valve (42), and the second pressure gauge (46) is used for measuring the pipeline pressure at the front side of the second stop valve (47);
the left side and the right side of the horizontal support plate (10) are connected with the inner wall of the outer cylinder (1), the arc-shaped edge at the bottom of the crescent plate (11) is connected with the inner wall of the outer cylinder (1), the horizontal support plate (10) and the crescent plate (11) divide the lower space of the horizontal support plate (10) into small cavities with crescent sections, and the crescent plate (11) is provided with transverse through holes (11 a) for connecting the adjacent small cavities and the small cavities at the two ends with the inner cavity of the outer cylinder (1); the horizontal supporting plate (10) is provided with vertical through holes (10 a) communicated with the small cavities;
the positioning support plate frame further comprises: a lower rib plate (15) vertically connected with each crescent plate (11), and an upper rib plate (16) vertically connected with each fin plate (13); the small cavity is divided into a plurality of independent cavities by the lower rib plates (15), and transition holes (15 a) for connecting the independent cavities are formed in the lower rib plates (15);
the bottommost parts of the crescent plate (11) and the axial positioning plate (14) are provided with diversion holes (11 b); the bottom of at least one of the individual cavities is provided with a drain hole (11 c).
2. The vibration transmission path experimental device according to claim 1, wherein the inlet and outlet (1 a) is arranged at the top of the front end of the outer cylinder (1), and two wire inlet and outlet ports (1 b) are respectively arranged below the front end of the outer cylinder (1) in a left-right inclined manner;
a movable opening cover (1 c) which can be opened and closed is arranged on the inlet and outlet (1 a);
the upper cover of the wire inlet and outlet (1 b) is provided with a wire inlet and outlet plate (1 d), and the wire inlet and outlet plate (1 d) is provided with a plurality of wire inlet and outlet holes.
3. The vibration transmission path experiment apparatus according to claim 1, further provided with an attitude control assembly comprising: a spring damper (50) and a height adjusting device (51); the spring damper (50) is arranged at the lower side of the rear end of the outer cylinder (1), and the height adjusting device (51) is arranged at the lower side of the front end of the outer cylinder (1).
4. A vibration transmission path experimental device according to claim 3, characterized in that the bottom of the outer cylinder (1) is provided with two connection plates (52), and the spring damper (50) and the height adjusting device (51) are respectively mounted on the two connection plates (52).
5. A vibration transmission path experimental device according to claim 3, characterized in that the height adjusting means (51) is a screw jack.
6. The vibration transmission path experiment apparatus according to claim 1, wherein the upper and lower sides of the inner cylinder (2) are respectively provided with a horizontal mounting plate (2 e);
the vibration isolators (32) are arranged between the horizontal mounting plate (2 e), the horizontal positioning plate (12) and the horizontal supporting plate (10) along the axial array.
7. The vibration transmission path experimental device according to claim 1, wherein a plurality of annular mounting plates (2 f) are arranged on the inner wall of the inner cylinder (2), and a plurality of annular axial exciting plates (2 g) are correspondingly arranged on the central axis of the inner cylinder (2);
the vibration excitation transition plates (31) are arranged in a plurality of annular arrays on the axis of the inner cylinder (2), and two ends of the vibration excitation transition plates (31) are respectively connected to the annular mounting plate (2 f) and the annular axial vibration excitation plate (2 g).
8. The vibration transmission path experiment device according to claim 1, wherein an excitation source mounting table (2 k) is fixed on the inner wall of the inner cylinder (2), and an excitation source (30) is mounted on the excitation source mounting table (2 k) and the annular axial excitation plate (2 g).
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