CN210037128U - Frequency-adjustable air excitation power performance testing device - Google Patents
Frequency-adjustable air excitation power performance testing device Download PDFInfo
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- CN210037128U CN210037128U CN201921120758.3U CN201921120758U CN210037128U CN 210037128 U CN210037128 U CN 210037128U CN 201921120758 U CN201921120758 U CN 201921120758U CN 210037128 U CN210037128 U CN 210037128U
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Abstract
The utility model relates to a frequency-adjustable air excitation power performance testing device, which comprises an air tank, a throttling frequency modulator and an air excitation testing device, wherein an air outlet of the air tank is connected with an air inlet of the throttling frequency modulator, and an air outlet of the air tank is provided with a pressure regulating valve and a switch valve; the air excitation test device comprises a hollow shell and a piston matched with the shell; the shell is provided with an upper vent hole, a lower vent hole and an air inlet hole, the air inlet hole is connected with an air outlet of the throttling frequency modulator, and the bottom of the shell is provided with a base for connecting a measured object; the piston is provided with an upper chamber and a lower chamber which are separated from each other along the axial direction, and the piston has a first working state that the lower chamber is communicated with the lower vent hole and the upper chamber is communicated with the air inlet hole, and a second working state that the lower chamber is communicated with the air inlet hole and the upper chamber is communicated with the upper vent hole. The device is simple in structure, convenient to install and detach, high in response speed and low in material consumption.
Description
Technical Field
The utility model relates to a but frequency modulation air excitation power capability test device belongs to the experimental technical field of structural performance.
Background
The existing electrodynamic type excitation device, the electrohydraulic type excitation device and the hydraulic type excitation device are used as excitation parts to form a vibration machine, are used for realizing the work of conveying, compacting, forming and the like of an object, and are also used as a product inspection machine to be widely applied to the test and test fields related to power performance, such as electronics, medical treatment, communication and the like. However, the above types of excitation devices have the following disadvantages: (1) the common excitation device has complex structural style and high manufacturing cost; (2) the excitation response speed is slow; (3) the excitation frequency and the excitation energy value cannot be directly reflected and controlled; (4) the material consumption is serious, and the environment protection and sustainable development are not facilitated.
For pursuing the strategic goals of green development and sustainable development of structural dynamic performance test, a novel device which can be assembled quickly, is favorable for performing the performance test conveniently and efficiently and can control the excitation frequency and the excitation energy is urgently needed to overcome the problems of complex structural style, low response speed, serious material consumption and the like of the traditional excitation device.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the frequency-adjustable air excitation power performance testing device is simple in structure, convenient to install and disassemble, high in response speed and low in material consumption.
In order to solve the technical problem, the utility model provides a technical scheme is: a frequency-adjustable air excitation power performance testing device comprises an air tank, a throttling frequency modulator and an air excitation testing device, wherein an air outlet of the air tank is connected with an air inlet of the throttling frequency modulator, and a pressure regulating valve and a switch valve are arranged at an air outlet of the air tank; the air excitation test device comprises a hollow shell and a piston matched with the shell; the shell is provided with an upper vent hole, a lower vent hole and an air inlet hole, the air inlet hole is connected with an air outlet of the throttling frequency modulator, and the bottom of the shell is provided with a base for connecting a measured object; the piston is provided with an upper chamber and a lower chamber which are separated from each other along the axial direction, and the piston has a first working state that the lower chamber is communicated with the lower vent hole and the upper chamber is communicated with the air inlet hole, and a second working state that the lower chamber is communicated with the air inlet hole and the upper chamber is communicated with the upper vent hole.
Preferably, the base is provided with a mounting hole, and the base can be connected with the tested piece through a bolt penetrating through the mounting hole.
Preferably, a pressure gauge is arranged at the switch valve.
It should be noted that the throttle modulator is a conventional one, also called a triplet, and is available in shopping websites such as the Taobao network. When the utility model is used, firstly, the tested object is fixed on the base, then the high-pressure gas in the gas tank is regulated through the pressure regulating valve, and then the high-pressure gas is subjected to frequency modulation through the throttling frequency modulator, so as to obtain the high-pressure air with the pressure and the frequency required by the test; and finally, high-pressure air is input through an air inlet hole in the shell to change the air pressure in the upper cavity and the lower cavity of the piston to form pressure difference, so that the cylindrical piston reciprocates and circularly moves between the upper cavity and the lower cavity of the cylindrical shell, and an excitation effect is generated.
The utility model discloses the beneficial effect who brings is: 1) the utility model discloses a high-pressure air is as the power supply, and not only basic cost is low, more environmental protection than traditional device, and is small moreover, and the trouble is few, and it is easy to maintain.
2) The utility model discloses can solve traditional electrodynamic type excitation device, the difficult problem that electrohydraulic type excitation device is difficult to realize control excitation frequency and excitation energy.
3) Adopt the utility model discloses the device carries out the test of dynamic property test, can follow along with shaking along with surveying, and the installation is dismantled conveniently, starts the stop in the twinkling of an eye, and experimental flow is simple and convenient.
The further improvement of the technical scheme is as follows: an excitation frequency acquisition chip and an excitation energy acquisition chip are arranged in the base, the excitation frequency acquisition chip is provided with an excitation frequency output port, and the excitation energy acquisition chip is provided with an excitation energy output port. The excitation frequency acquisition chip and the excitation energy acquisition chip are adopted, so that the excitation frequency and the excitation energy can be accurately acquired, and the test precision is effectively ensured.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the structure of the throttle frequency modulator.
FIG. 3 is a schematic structural view of an air excitation test apparatus.
Fig. 4 is a schematic diagram of the piston up-stroke principle.
Fig. 5 is a schematic view of the piston descending principle.
Reference numerals: 0-high pressure air; 0 a-high pressure air after pressure regulation; 0 b-high pressure air after pressure and frequency regulation; 1-a gas tank; 2-pressure regulating valve; 3-a pressure gauge; 4-a switch valve; 5, an air guide pipe; 6 a-air duct male joint; 6 b-airway female joint; 7-throttling frequency modulator; 8-throttling frequency modulation valve; 9-back pressure pipe; 9 a-the end of the back pressure pipe; 10 a-a male joint of a gas pipe; 10 b-female joint of air intake; 11 a-upper vent; 11 b-lower vent; 11 c-an air intake; 12-a housing; 12 a-housing top plate; 12 b-housing floor; 13-a cavity; 14-a piston; 15-an upper chamber; 16-a lower chamber; 17-a base; 18a, 18 b-mounting holes; 19-excitation frequency acquisition chip; 20-excitation frequency output port; 21-excitation energy acquisition chip; 22-excitation energy output port; 23-the object to be tested; 24a, 24 b-high strength bolts; 25a, 25 b-nuts.
Detailed Description
Examples
The frequency-adjustable air excitation power performance testing device of the embodiment is shown in fig. 1 and comprises an air tank 1, a throttling frequency modulator 7 and an air excitation testing device, wherein an air outlet of the air tank 1 is connected with an air inlet of the throttling frequency modulator 7 through an air duct 5, high-pressure air 0 is filled in the air tank 1, and a pressure regulating valve 2, a pressure gauge 3 and a switch valve 4 are arranged at an air outlet of the air tank 1. When the air pressure regulating valve is used, the switch valve 4 is closed, the pressure regulating valve 2 is regulated, the display data of the pressure meter 3 is read, and the pressure regulating valve 2 is stopped regulating until the required high-pressure air is reached. The high-pressure air 0 is adjusted by the pressure adjusting valve 2 to obtain the pressure-adjusted high-pressure air 0 a.
As shown in fig. 1 and 2, the pressure-regulated high-pressure air 0a enters the throttling frequency modulator 7 through an air inlet of the throttling frequency modulator 7, and at the moment, the end 9a of the return pipe is ejected out to seal the return pipe 9. Then, the throttle frequency modulation valve 8 is adjusted to obtain the high-pressure air 0b with the frequency required by the test after pressure regulation and frequency modulation. The throttling frequency modulator 7 is prior art and will not be described in detail.
As shown in fig. 1 and 3, the air excitation test device includes a hollow housing 12 and a piston 14 engaged with the housing 12, the housing 12 and the piston 14 are preferably cylindrical, and the piston 14 is lubricated with lubricating oil on the inner wall of the housing 12 to ensure smooth operation of the piston 14; an upper vent hole 11a, a lower vent hole 11b and an air inlet hole 11c are arranged on the shell 12, the air inlet hole 11c is connected with an air outlet of the throttling frequency modulator 7, and a base used for connecting a measured object 23 is arranged at the bottom of the shell 12; an upper chamber 15 and a lower chamber 16 which are mutually isolated are axially arranged on the piston 14, the piston 14 is shaped like a Chinese character 'wang', and the piston 14 has a first working state that the lower chamber 16 is communicated with the lower vent hole 11b and the upper chamber 15 is communicated with the air inlet hole 11c, and a second working state that the lower chamber 16 is communicated with the air inlet hole 11c and the upper chamber 15 is communicated with the upper vent hole 11 a. In the present embodiment, "upper" and "lower" are used only to indicate relative relationships between positions, and are not intended to limit specific orientations; in actual use, the device can be arranged up and down, or left and right horizontally.
When the up-down arrangement is adopted, the piston 14 is arranged in the shell 12, the piston 14 can slide up and down smoothly in the inner cavity of the shell 12, and the initial position of the piston 14 is positioned at the lower part in the cavity of the shell 12 due to the self-weight action. The base 17 is located at the bottom end of the housing 12, the base 17 is further provided with mounting holes 18a, 18b (preferably 4-8 mounting holes), the object to be tested 23 is fixed on the base 17 through high-strength bolts 24a, 24b and matched nuts 25a, 25b, and the object to be tested 23 is transmitted to the object to be tested 23 through the continuous excitation of the base 17, so that the continuous excitation effect is achieved.
As shown in fig. 4, when the high-pressure air pushes the piston 14 to move upwards, the air inlet female joint 10b is connected with the air pipe male joint 10a, the high-pressure air 0b after pressure and frequency adjustment enters the upper chamber 15 of the piston 14 through the air inlet hole 11c, the air pressure in the upper chamber 15 of the piston 14 is increased, the air pressure in the lower chamber 16 of the cylindrical piston 14 is unchanged, so that a pressure difference is formed, the piston 14 is pushed to move upwards, the air in the cavity 13 of the housing 12 is extruded to be discharged through the upper vent hole 11a, and the air in the lower chamber 16 of the piston 14 is supplemented through the lower vent hole 11 b; the upward movement of the piston is terminated when the piston 14 reaches the end of its upward travel and contacts the cylindrical housing top plate 12 a.
As shown in fig. 5, when the high-pressure air pushes the piston to move downward, the piston 14 starts to move downward due to the reverse pushing action, at this time, the pressure-regulated and frequency-modulated high-pressure air 0b automatically ventilates through the air inlet hole 11c and enters the lower chamber 16 of the piston 14, the air pressure in the lower chamber 16 of the piston 14 increases, the upper chamber 15 of the piston 14 is communicated with the atmosphere through the upper vent hole 11a, the upper chamber 15 is decompressed, a pressure difference is formed, the piston 14 is pushed to move downward in an accelerated manner, the air in the cavity 13 of the housing 12 is extruded and discharged through the lower vent hole 11b, and the air in the upper chamber 15 of the piston 14 is replenished through the upper. When the piston 14 descends to the terminal point, the impact is carried out on the bottom plate 12b of the cylindrical shell, and then the impact is transmitted to the base 17; at this point, the first cycle ends.
And the air inlet hole 11c is continuously introduced with the high-pressure air 0b after pressure and frequency adjustment, and the second cycle begins, so that the piston 14 continuously reciprocates upwards and downwards in a continuous reciprocating cycle, continuous excitation is carried out, and the normal operation of a dynamic performance test is ensured.
High-pressure air with different pressures can be obtained by continuously adjusting the pressure regulating valve 2, and high-pressure air with different frequencies can be obtained by continuously adjusting the throttling frequency modulation valve 8, so that the test of structural dynamic performance tests of different types is completed.
The embodiment can be further modified as follows: an excitation frequency acquisition chip 19 and an excitation energy acquisition chip 21 are arranged in the base 17, the excitation frequency acquisition chip 19 is connected with the excitation frequency output port 20, and the excitation energy acquisition chip 21 is connected with the excitation energy output port 22 for transmitting excitation data signals. Therefore, the excitation frequency and the excitation energy can be accurately obtained, and the test precision is effectively ensured.
The installation method of the present embodiment is as follows: firstly, the assembly of the air excitation test device is completed, and the method specifically comprises the step of connecting a high-pressure air output port of an air tank with a high-pressure air input port of a throttling frequency modulator through a male connector and a female connector. Secondly, the installation of the air excitation test device is completed, and the installation specifically comprises that the base and the tested object are fixedly connected with the reserved installation hole of the cylindrical shell base through a high-strength bolt pre-embedded in the tested object. Then, the high-pressure air outlet of the throttling frequency modulator is connected with the air inlet hole in the middle of the shell through a male joint and a female joint. And finally, connecting the excitation frequency output port and the excitation energy output port with a test instrument.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like that are made within the spirit and principle of the present invention are within the scope of the present invention.
Claims (4)
1. The utility model provides a frequency-modulated air excitation power capability test device which characterized in that: the device comprises a gas tank, a throttling frequency modulator and an air excitation test device, wherein a gas outlet of the gas tank is connected with a gas inlet of the throttling frequency modulator, and a pressure regulating valve and a switch valve are arranged at a gas outlet of the gas tank;
the air excitation test device comprises a hollow shell and a piston matched with the shell; the shell is provided with an upper vent hole, a lower vent hole and an air inlet hole, the air inlet hole is connected with an air outlet of the throttling frequency modulator, and the bottom of the shell is provided with a base for connecting a measured object; the piston is provided with an upper chamber and a lower chamber which are separated from each other along the axial direction, and the piston has a first working state that the lower chamber is communicated with the lower vent hole and the upper chamber is communicated with the air inlet hole, and a second working state that the lower chamber is communicated with the air inlet hole and the upper chamber is communicated with the upper vent hole.
2. The tunable air excited dynamic performance testing apparatus of claim 1, wherein: an excitation frequency acquisition chip and an excitation energy acquisition chip are arranged in the base, the excitation frequency acquisition chip is provided with an excitation frequency output port, and the excitation energy acquisition chip is provided with an excitation energy output port.
3. The tunable air excited dynamic performance testing apparatus of claim 1, wherein: the base is provided with a mounting hole, and the base can be connected with a tested piece through a bolt penetrating through the mounting hole.
4. The tunable air excited dynamic performance testing apparatus of claim 1, wherein: and a pressure gauge is arranged at the switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120758.3U CN210037128U (en) | 2019-07-17 | 2019-07-17 | Frequency-adjustable air excitation power performance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120758.3U CN210037128U (en) | 2019-07-17 | 2019-07-17 | Frequency-adjustable air excitation power performance testing device |
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| CN210037128U true CN210037128U (en) | 2020-02-07 |
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| CN201921120758.3U Active CN210037128U (en) | 2019-07-17 | 2019-07-17 | Frequency-adjustable air excitation power performance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274742A (en) * | 2019-07-17 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of Frequency Adjustable air activation power performance testing device |
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2019
- 2019-07-17 CN CN201921120758.3U patent/CN210037128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274742A (en) * | 2019-07-17 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of Frequency Adjustable air activation power performance testing device |
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