CN105466677A - Tunnel acoustic baffle fatigue tester - Google Patents
Tunnel acoustic baffle fatigue tester Download PDFInfo
- Publication number
- CN105466677A CN105466677A CN201610016883.4A CN201610016883A CN105466677A CN 105466677 A CN105466677 A CN 105466677A CN 201610016883 A CN201610016883 A CN 201610016883A CN 105466677 A CN105466677 A CN 105466677A
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- CN
- China
- Prior art keywords
- air bag
- acoustic board
- acoustic baffle
- pressure
- tunnel
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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
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a tunnel acoustic baffle fatigue tester, comprising a casing which is internally provided with an acoustic baffle; the acoustic baffle divides the casing into a first space and a second space; the two spaces are both internally provided with an air bag; the air bag is jointed to the acoustic baffle under an air inflation state to generate pressure on the acoustic baffle; pressure values are displayed through pressure indication containers connected with the air bags, and are the loads acting on the acoustic baffle. The tunnel acoustic baffle fatigue tester has a simple and practical structure, and can effectively solve the tunnel acoustic baffle fatigue test problem, and lay a solid foundation for tunnel acoustic baffle popularization and application.
Description
Technical field
The present invention relates to track traffic vibration and noise reducing field, particularly relate to a kind of novel tunnel acoustic board fatigue experimental device.
Background technology
Along with the high speed development of national economy, the advantage that convenient with it, quick, punctual, energy-conservation, the effective alleviation traffic above-ground of track traffic is blocked up, becomes rapidly the Hot spots for development that urban transportation is built.But its vibration and noise pollutes also can produce certain negative effect to along thread environment, the vibration and noise reducing measure taking necessity the same period must built.
At present, tunnel acoustic board project has put on research schedule, but its fatigue behaviour how, awaits further research.But, there is the problem of following two aspects: on the one hand, due to testing machine two column limited separation, just can test after test exemplar needs reduced scale in the pick-up unit that present stage is not special, and the fatigue tester test that application is conventional on the market; On the other hand, adopting in this testing machine test, is point cantact to the load mode of acoustic board, is that uniformly distributed load is not identical with air in actual tunnel substantially to the used load of acoustic board.In view of above-mentioned 2 points, tunnel acoustic board project be made to implement smoothly, a kind of special purpose device being applied to tunnel acoustic board torture test need be developed.
Summary of the invention
The invention provides a kind of tunnel acoustic board fatigue experimental device, effectively can solve tunnel acoustic board torture test problem, and there is good test effect.
Technical scheme of the present invention is: a kind of tunnel acoustic board fatigue experimental device, comprise casing, acoustic board is placed in described casing, described casing is divided into the first space and second space by described acoustic board, air bag is placed respectively in described two spaces, described air bag is fitted with described acoustic board and is produced pressure to acoustic board under the state of inflation, and force value indicates container to show by the pressure be connected with described air bag, and namely described force value acts on the load on acoustic board.
Preferably, described air bag is connected with blower fan, by blower fan to insufflation gas in air bag, installs reduction valve and reversal valve between blower fan and air bag.
Preferably, described acoustic board comprises the first acoustic board and the second acoustic board, the first air bag is placed in described first space, the second air bag and the 3rd air bag is placed in described second space, described first air bag and the second air bag indicate container to be connected with the first pressure respectively, and described 3rd air bag indicates container to be connected with the second pressure.
Preferably, described reversal valve is connected with the 3rd air bag respectively at the second air bag by three-way connection.
Beneficial effect of the present invention: the present invention is simple and practical, can solve tunnel acoustic board torture test problem, effectively for applying of tunnel acoustic board establishes solid foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of tunnel acoustic board fatigue experimental device of the present invention;
In figure: 1 blower fan, 2 reduction valve, 3 reversal valves, 4 three-way connections, 5 casings, 6 first acoustic boards, 7 second acoustic boards, 8 second air bags, 9 the 3rd air bags, 10 first air bags, 11 first pressure instruction containers, 12 second pressure instruction containers.
Embodiment
By reference to the accompanying drawings embodiment provided by the invention is described in further detail:
A kind of tunnel acoustic board fatigue experimental device, comprise casing, acoustic board is placed in described casing, described casing is divided into the first space and second space by described acoustic board, air bag is placed respectively in described two spaces, described air bag is fitted with described acoustic board and is produced pressure to acoustic board under the state of inflation, and force value indicates container to show by the pressure be connected with described air bag, and namely described force value acts on the load on acoustic board.
Wherein, as shown in Figure 1, for the structural representation of an embodiment of the present invention, the first acoustic board and the second acoustic board is placed with in casing, casing is divided into the first space and second space, the first air bag is placed in described first space, the second air bag and the 3rd air bag is placed in described second space, described first air bag and the second air bag indicate container to be connected with the first pressure respectively, described 3rd air bag indicates container to be connected with the second pressure, two air bags are connected with blower fan respectively, by blower fan to insufflation gas in air bag, reduction valve and reversal valve are installed between blower fan and air bag, described reversal valve is connected with the 3rd air bag respectively at the second air bag by three-way connection.
The principle of work of this test unit is: air bag and acoustic board are fitted, then to insufflation gas in air bag to produce certain pressure, by both binding faces, inside air bag pressure is delivered on acoustic board, to reach object acoustic board surface being implemented to uniformly distributed load loading, the size of imposed load controls by reduction valve top hole pressure size.
Test unit of the present invention tests two pieces of full-scale acoustic boards, be provided with three air bags, large-sized first air bag is provided with above acoustic board, below is provided with two undersized second air bags and the 3rd air bag, when being full of air in air bag, certain pressure will be produced, because air bag and acoustic board are in close-fitting state, power in air bag can evenly be delivered on acoustic board, upper and lower two groups of air bags are equipped with pressure instruction container/tensimeter, reduction valve top hole pressure can be adjusted to adjust the pressure in air bag, thus the load of corrective action on acoustic board.In the course of work, adopt reversal valve biaxial loadings, the filling of three air bags, venting function can be realized simultaneously, and under the control of reduction valve in guarantee in lower gasbag pressure identical, identical to guarantee the power suffered by acoustic board upper and lower surface.Air bag plays transmission and the distribution effect of power in process of the test, and the advantage of this load mode is can the uniform loading of maximized analog force, and the power on acoustic board of acting on can air pressure in simulation tunnel comparatively true to nature.
Concrete implementation method is, two pieces of full scale unit first acoustic boards 6 and the second acoustic board 7 are tested simultaneously, as shown in Figure 1, first acoustic board 6 and the second acoustic board 7 level are placed in casing 5, be the second air bag 8 and the 3rd air bag 9 below the first air bag 10 above two acoustic boards, can implement to load to the first acoustic board 6 and the second acoustic board 7 upper surface when first air bag 10 is inflated simultaneously, can implement to load to the first acoustic board 6 and the second acoustic board 7 lower surface when the second air bag 8 and the 3rd air bag 9 are inflated.During work, blower fan 1 is source of the gas, air obtains the air pressure required by test after reduction valve 2 reduces pressure, reduction valve 2 is connected with reversal valve 3, reversal valve 3 one end is connected with the first air bag 10, the other end is connected with the second air bag 8 and the 3rd air bag 9 by three-way connection 4, and reduction valve effluent air is controlled by reversal valve 3, can ignore respectively to the second air bag 8, the 3rd air bag 9 and each air bag quality of the first air bag 10() middle inflation/deflation.When the first air bag 10 is inflated upward, below second air bag the 8, the 3rd air bag 9 is vented, and vice versa.The each inflation/deflation of upper and lower air bag once completes the forward and reverse torture test of acoustic board once.Second air bag 8, the 3rd air bag 9, first air bag 10 indicate container 11, second pressure to indicate container 12 to be connected respectively with the first pressure, the pressure that Observable is real-time also ensures to apply identical load to the first acoustic board 6 with the second acoustic board 7.In this torture test process, owing to have employed reversal valve biaxial loadings, substantially increase the efficiency of test.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (4)
1. a tunnel acoustic board fatigue experimental device, comprise casing, it is characterized in that, acoustic board is placed in described casing, described casing is divided into the first space and second space by described acoustic board, places air bag respectively in described two spaces, and described air bag is fitted with described acoustic board and produced pressure to acoustic board under the state of inflation, force value indicates container to show by the pressure be connected with described air bag, and namely described force value acts on the load on acoustic board.
2. tunnel according to claim 1 acoustic board fatigue experimental device, it is characterized in that, described air bag is connected with blower fan, by blower fan to insufflation gas in air bag, installs reduction valve and reversal valve between blower fan and air bag.
3. tunnel according to claim 1 and 2 acoustic board fatigue experimental device, it is characterized in that, described acoustic board comprises the first acoustic board and the second acoustic board, the first air bag is placed in described first space, the second air bag and the 3rd air bag is placed in described second space, described first air bag and the second air bag indicate container to be connected with the first pressure respectively, and described 3rd air bag indicates container to be connected with the second pressure.
4. tunnel according to claim 2 acoustic board fatigue experimental device, is characterized in that, described reversal valve is connected with the 3rd air bag respectively at the second air bag by three-way connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016883.4A CN105466677A (en) | 2016-01-11 | 2016-01-11 | Tunnel acoustic baffle fatigue tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610016883.4A CN105466677A (en) | 2016-01-11 | 2016-01-11 | Tunnel acoustic baffle fatigue tester |
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| Publication Number | Publication Date |
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| CN105466677A true CN105466677A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610016883.4A Pending CN105466677A (en) | 2016-01-11 | 2016-01-11 | Tunnel acoustic baffle fatigue tester |
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| CN (1) | CN105466677A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404341A (en) * | 2016-09-07 | 2017-02-15 | 甘肃路桥建设集团有限公司 | Monitoring collection instrument of impact force of running vehicle on two sides of road and railway tunnels |
| CN110261076A (en) * | 2019-04-22 | 2019-09-20 | 青岛东方船研深海装备结构技术有限公司 | A kind of multi-environment fatigue experimental device of novel flat-plate sample and test method |
| CN114813001A (en) * | 2022-06-27 | 2022-07-29 | 中国飞机强度研究所 | Vibration fatigue test system and method for low additional stiffness of airplane |
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2016
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| JPS59180446A (en) * | 1983-03-31 | 1984-10-13 | Mitsubishi Heavy Ind Ltd | Testing water tank |
| CN202994591U (en) * | 2012-12-28 | 2013-06-12 | 无锡市产品质量监督检验中心 | Airbag type four-screw rod multi-functional plate sample surface load testing machine |
| CN103674580A (en) * | 2013-11-27 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Vehicle body side wall loading device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404341A (en) * | 2016-09-07 | 2017-02-15 | 甘肃路桥建设集团有限公司 | Monitoring collection instrument of impact force of running vehicle on two sides of road and railway tunnels |
| CN106404341B (en) * | 2016-09-07 | 2019-07-16 | 甘肃路桥建设集团有限公司 | A kind of operation vehicle monitors Acquisition Instrument to highway, railway tunnel two sides impact force |
| CN110261076A (en) * | 2019-04-22 | 2019-09-20 | 青岛东方船研深海装备结构技术有限公司 | A kind of multi-environment fatigue experimental device of novel flat-plate sample and test method |
| CN114813001A (en) * | 2022-06-27 | 2022-07-29 | 中国飞机强度研究所 | Vibration fatigue test system and method for low additional stiffness of airplane |
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Application publication date: 20160406 |