CN108548645B - Pneumatic vibration test device and method - Google Patents
Pneumatic vibration test device and method Download PDFInfo
- Publication number
- CN108548645B CN108548645B CN201810266969.1A CN201810266969A CN108548645B CN 108548645 B CN108548645 B CN 108548645B CN 201810266969 A CN201810266969 A CN 201810266969A CN 108548645 B CN108548645 B CN 108548645B
- Authority
- CN
- China
- Prior art keywords
- vibration
- pneumatic vibrator
- vibration table
- pneumatic
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a pneumatic vibration test device and a method, comprising a pneumatic vibrator, a vibration air pressure sensor and a vibration air pressure sensor, wherein the pneumatic vibrator is used for providing vibration air pressure for testing and is provided with an air inlet part, and the air inlet part is connected with air supply equipment; the vibration table is used for accommodating a test piece to be detected, the vibration table is fixedly connected with the pneumatic vibrator, the vibration of the pneumatic vibrator is transmitted to the vibration table, and the vibration table drives the test piece to vibrate; and the mounting support is used for mounting and fixing the vibrating table. The invention is easy to assemble and disassemble, has large controllable range of vibration frequency (range of 0.1 Hz-400 Hz) and amplitude (range of 0-5 mm), can be repeatedly used and has lower cost.
Description
Technical Field
The invention relates to a vibration test device and a method, in particular to a test device and a method which are generated by airflow and can provide a large-range controllable vibration frequency and vibration amplitude.
Background
The existing vibration test bed is divided into an electric vibration test bed, a mechanical vibration test bed and a hydraulic vibration test bed. The mechanical vibration table belongs to a low-frequency large-load vibration test table, the frequency is 5-80 Hz, the load is 50 Kg-1000 Kg, the displacement is about 5mm, and the acceleration is 3-20 g; is suitable for low-frequency experiments, and the frequency does not meet the requirement. The electrodynamic type vibration test platform belongs to high frequency, big displacement, big thrust vibration test platform, and the frequency range is 5 ~ 3000Hz, and the displacement can reach 25.4mm, though can realize partial requirements such as frequency, nevertheless to the operating mode that needs follow-up vibration and survey, because the stage body structure of shaking table is great, the mesa is less, and the introduction installation of plus check out test set is very inconvenient, and the price of shaking table is expensive. The hydraulic vibration test bed has the frequency range of 0.1-50 Hz, the maximum amplitude of 40mm and the thrust of 3000kg, is suitable for vibration under low frequency, and is very inconvenient to introduce and install due to the fact that the test bed adopts a hydraulic structure, equipment is overlarge in size and expensive, and detection equipment is additionally arranged on the working condition of vibration along with measurement.
Through the search of the prior art documents and patents, the following results are found:
chinese patent No.: CN 102927248A, patent name: vibration test platform and drive arrangement thereof. The technology disclosed by the invention comprises the following steps: the utility model provides a vibration test bench, including lifting device and with the drive arrangement that lifting device connects, drive arrangement includes the gearbox, be provided with the input shaft in the gearbox and through the transmission shaft with the output shaft that the input shaft transmission is connected, be provided with a plurality of gear clutch subassembly on the transmission shaft, drive arrangement is still including controlling one gear clutch subassembly is in the controller of actuation state, gear clutch subassembly includes the clutch and is fixed in drive gear on the actuation body of clutch, the casing of clutch with the coaxial rotation of transmission shaft, drive gear with transmission shaft clearance fit. The disadvantages are that: 1) the test bed has a complex structure (comprising a gearbox, a clutch and other large parts), high cost and large occupied area of equipment; 2) the test bed is complex to operate and inconvenient to carry; 3) the treatment method has high energy consumption and high cost.
Chinese patent No.: CN 203024951U, patent name: a vibration test stand. The technology disclosed by the invention comprises the following steps: a vibration test bed comprises a rack, a vibration platform, a supporting guide pillar assembly, an auxiliary guide pillar and an auxiliary guide sleeve, wherein the supporting guide pillar assembly is connected with the rack and the vibration platform, the auxiliary guide pillar is connected with the vibration platform, the auxiliary guide sleeve is arranged on the rack, and the auxiliary guide pillar is sleeved in the auxiliary guide sleeve. The disadvantages are that: 1) the test bed and the additional power device are complex and high in cost; 2) the test bed has low vibration frequency, is mainly used for simulating the low-frequency vibration environment of some products in the transportation process and detecting the shock resistance of the product structures such as automobiles, toys, furniture, packages and the like; 3) the treatment method is energy-consuming.
In miniature vibration test, like silt vibration rheology, the vibration rheology of other materials, the welding vibration test of chip etc. general experimental condition has following characteristic: the test has limited use times, mechanical parameters in the vibration process need to be measured in real time, the vibration equipment and the test equipment need to be convenient to disassemble and assemble, the existing vibration equipment has large equipment volume and complex structure, so that the additional test instruments such as mechanics are inconvenient to install, test samples are taken down after vibration and then installed on the additional test instruments for detection in the test of related parameters, the influence of vibration on the samples cannot be reflected in real time, the problem is particularly prominent in the field of rheology, and the vibration equipment is expensive.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the pneumatic vibration test device and the pneumatic vibration test method which are convenient to install and can realize real-time measurement of vibration influence, have obvious vibration effect and are particularly suitable for vibration tests in the rheological field.
According to a first object of the present invention, there is provided a pneumatic vibration testing apparatus, the apparatus comprising:
the pneumatic vibrator is used for providing vibrating air pressure for testing; the pneumatic vibrator is provided with an air inlet part, and the air inlet part is connected with air supply equipment;
the vibration table is used for accommodating a test piece to be detected, the vibration table is fixedly connected with the pneumatic vibrator, the vibration of the pneumatic vibrator is transmitted to the vibration table, and the vibration table drives the test piece to vibrate;
and the mounting support is used for mounting and fixing the vibrating table.
Preferably, the pneumatic vibrator is connected with the vibration table through threads and transmits vibration.
Preferably, the vibration table is connected with the mounting support through a damping connecting piece, and the damping connecting piece is used for supporting the vibration table on one hand and reducing impact of vibration on the mounting support on the other hand.
Preferably, the mounting support comprises a base, a transverse plate and a vertical plate, wherein the transverse plate and the vertical plate are arranged above the base, and the vertical plate is arranged above one end of the transverse plate and used for mounting the vibrating table; the other end of the transverse plate is fixed on the base.
More preferably, the base is provided with a mounting hole for mounting on the experiment platform through a mounting clamping screw.
More preferably, the erection support adopts the corrosion resistant plate welding to form, riser department local welding strengthening rib prevents the riser with the right angle department stress concentration that the diaphragm is connected leads to the fracture.
Preferably, the gas inlet component is connected with the gas supply equipment through a conversion joint and a binding hoop to prevent high-pressure gas from leaking.
Preferably, the pneumatic vibrator is a turbine type pneumatic vibrator. The turbine type pneumatic vibrator enables an eccentric turbine in the turbine type pneumatic vibrator to rotate on a track at a high speed through air pressure of an air inlet part to generate high-power centrifugal force, provides certain amplitude and frequency, and changes the frequency and amplitude of the vibrating table through changing the pressure of the air pressure output by connected air supply equipment (such as an air compressor) and the size of the pneumatic vibrator.
Preferably, the vibration table is box-shaped for accommodating a test piece to be tested, and has an open upper portion and a closed bottom portion.
Preferably, the device further comprises a vibration tester, wherein the vibration tester is arranged on the side surface of the vibration table and used for collecting the vibration amplitude and the frequency of the vibration table to be used as a basis for regulating and controlling the air inlet pressure of the pneumatic vibrator.
The device is different from the existing vibration providing modes (electromagnetism, hydraulic pressure and machinery), creatively adopts the pneumatic vibrator and the pneumatic vibrator to provide high-frequency high-amplitude vibration, has large frequency and amplitude adjusting range (the maximum value depends on the inlet pneumatic pressure and vibrator parameters), can be measured along with the vibration, and is convenient to install and disassemble in a vibration experiment.
The device of the invention controls the frequency of vibration by adopting inlet air pressure and replacing the existing vibrator, and the vibration amplitude is determined by the provided acceleration amplitude and frequency. The vibration generated by the pneumatic vibrator is transmitted to the vibration table through threaded connection, so that the test piece in the vibration table generates vibration with specified frequency. The pneumatic vibrator is generated by a centrifugal force caused by unbalance of positive and negative torques of the rotor. The novel energy-saving gas stove has the characteristics of instant starting and stopping, free installation in space, long service life, low gas consumption, safety, energy conservation, small volume, few faults, simplicity and easiness in installation and maintenance and the like.
According to a second object of the present invention, there is provided a pneumatic vibration testing method using the above apparatus. Specifically, the method comprises the following steps:
fixing the mounting support on an experiment platform, and placing a test piece to be tested into a vibration table;
opening the vibration tester;
connecting a pneumatic vibrator with air supply equipment, opening the air supply equipment, supplying low air pressure, and checking the air tightness of a connecting pipeline;
gradually and slowly adjusting the air pressure within the range below the allowable air pressure and the required maximum air pressure of the vibration table according to the frequency and the amplitude read by the vibration tester;
and closing the gas supply equipment and detecting the test piece to be detected.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts the existing pneumatic vibrator to provide the vibration required by the experiment, and skillfully designs the vibration test bed which is convenient to install and operate, the vibration test bed can be tested along with the vibration, started and stopped instantly, installed at any space, has the advantages of long service life, low gas consumption, safety, energy conservation, small volume, few faults, simple installation and maintenance and low manufacturing cost, and the device has obvious vibration effect and stable vibration after being tested by an indoor model.
The invention can meet the installation requirements of different additional vibration mechanical real test devices, effectively integrates the mechanical measurement device and the vibration test bed, is easy to install and disassemble, and achieves multiple effects of high efficiency, economy, energy saving, safety and the like.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of an apparatus according to a preferred embodiment of the present invention;
in the figure: the device comprises an air inlet pipe 1, a pneumatic vibrator 2, a vibration table 3, a shock absorber 4, a mounting support 5, a mounting clamping screw 6 and a vibration tester 7.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, a schematic structural diagram of a preferred embodiment of a pneumatic vibration testing apparatus includes:
a pneumatic vibrator 2 for providing a vibrating air pressure for a test; the pneumatic vibrator is provided with an air inlet part, and the air inlet part is connected with air supply equipment;
the vibration table 3 is used for accommodating a test piece to be detected, the vibration table 3 is fixedly connected with the pneumatic vibrator 2, the vibration of the pneumatic vibrator 2 is transmitted to the vibration table 3, and the vibration table 3 drives the test piece to vibrate;
and the mounting support 5 is used for mounting and fixing the vibration table 3, so that the vibration table 3 and the pneumatic vibrator 2 are fixed during an experiment.
For a better understanding of the present invention, reference is made to the following examples, which are set forth to illustrate, but are not to be construed as the limit of the present invention.
The pneumatic vibration test bed which is convenient to install and can realize real-time measurement of vibration influence is adopted to carry out vibration test on the silt with the viscous mud of which the median diameter d50 is 19.49 mu m and the water content is 51.04%.
Specifically, as shown in fig. 1, the pneumatic vibration test device comprises an air inlet pipe 1, a pneumatic vibrator 2, a vibration table 3, a shock absorber 4, a mounting support 5, a mounting clamping screw 6 and a vibration tester 7, wherein: the air inlet pipe 1 of the pneumatic vibrator 2 is connected with an air supply device (such as an air compressor), and the air inlet pipe 1 and the pneumatic vibrator 2 are screwed up by a binding hoop to prevent high-pressure gas from leaking. The pneumatic vibrator 2 and the vibration table 3 are connected through screw threads to transmit vibration. The vibration table 3 is connected with the mounting support 5 by a damper 4, wherein the damper 4 is used for supporting the vibration table 3 on one hand and reducing the impact of vibration on the mounting support 5 on the other hand. The mounting clamping screw 6 is used for fixing the base of the mounting support 5 on the experiment table. The vibration tester 7 is used for testing the vibration amplitude and frequency of the vibration table 3 and is used as an important index for regulating and controlling the air pressure at the inlet.
In some embodiments of the present invention, the air inlet pipe 1 is a common pressure-resistant plastic hose, and delivers high-pressure air to the air inlet of the vibration table. In this embodiment, the inner diameter of the air inlet pipe 1 is 8mm, and the displacement of the air compressor at one end of the air inlet pipe is 0.3m3And/min, a pressure gauge is arranged on the air purifier, and the air pressure of the exhausted air can be recorded.
In some embodiments of the present invention, the pneumatic vibrator 2 is a turbine type pneumatic vibrator. In the embodiment, the type of the pneumatic vibrator 2 is a turbine type GT10 pneumatic vibrator, the size is 86mm long multiplied by 50mm high, the centrifugal force is 850-2450N, the air inlet is connected with the air inlet pipe 1 through a threaded joint, the working principle is that a turbine helical tooth structure is adopted inside, after compressed air enters, a gear is caused to rotate rapidly, the shaft rod is driven to collide with the inner wall, and severe vibration is generated.
In some embodiments of the present invention, the vibration table 3 is box-shaped for accommodating a test piece to be tested, and has an open upper portion and a closed bottom portion. In this embodiment, the vibration table 3 is made of a stainless steel plate with a thickness of 3mm, and the vibration table 3 has an overall size of 88mm in length, 88mm in width, and 90mm in height, and is used for mounting and containing a test piece to be detected with vibration detection.
In some embodiments of the present invention, the damper 4 is a rubber damper, and the rubber damper is screwed to the vibrating table and the mounting base, on one hand, to support the vibrating table and, on the other hand, to reduce the impact of vibration on the mounting base. In this embodiment, the rubber damper size M3 × 8; d8 × H8, M: represents the screw diameter; d: represents the rubber diameter; dimension H represents rubber height; 4 vibration dampers are used for supporting the vibration table 3 and, on the other hand, for reducing the impact of vibrations on the mounting support 5.
In some embodiments of the present invention, the mounting support 5 includes a base 501, and a horizontal plate 502 and a vertical plate 503 which are disposed above the base, wherein the vertical plate 503 is disposed above one end of the horizontal plate 502 for mounting the vibration table 3; the other end of the horizontal plate 502 is fixed on the base 501. The base 501 is provided with a mounting hole for mounting on an experiment platform through a mounting clamping screw 6. In this embodiment, installing support 5 adopts the stainless steel welding of 4 blocks of 5mm thickness to form, riser 503 department local welding strengthening rib prevents riser 503 with the right angle department stress concentration that diaphragm 502 is connected leads to the fracture, processes the screw through-hole of three diameter 8mm on the support for connect installation clamping screw 6.
In some embodiments of the present invention, the vibration tester 7 employs a distance measuring laser displacement sensor, and is installed on the side surface of the vibration table for collecting the vibration amplitude and frequency of the vibration table 3, so as to conveniently adjust the air inlet pressure in real time. In this embodiment, the vibration tester 7 adopts a mag-C1050 distance measurement laser displacement sensor with a magical loose vision, a power supply voltage of the displacement sensor is 12-24V, a test precision is 1/100mm, an output voltage is converted into a corresponding displacement, and an amplitude and a frequency are measured and used as a basis for regulating and controlling the air inlet pressure of the pneumatic vibrator.
In this embodiment, the mounting and clamping screw 6 is a hand screw, and the size of the screw is M8 × 110 (head 30mm), so that the base of the mounting support 5 is fixed on a laboratory table or other laboratory platforms.
The above is a preferable configuration design in the present invention, but it is needless to say that the above-described members may have other configurations in other embodiments. The above-mentioned preferred structures can be used alone, under the prerequisite that does not conflict each other, also can be used in arbitrary combination, and the effect will be better when using in combination. Of course, the damper 4 in the above embodiment may be omitted, but the object of the present invention is also achieved.
By using the device, the invention also provides a pneumatic vibration test method, which is combined with the preferred embodiment of the device, and the implementation process of the method comprises the following steps:
the method comprises the following steps:
① the bottom of the mounting seat is tightly attached to the back of the experiment table top, and the clamping screw is manually fastened and mounted until the mounting seat is firmly clamped on the experiment table top.
② turn on the vibration tester.
③ connecting the air inlet pipe to the air inlet, tightening the adapter of the air inlet pipe and the air inlet with a binding hoop to prevent the air inlet pipe from separating from the vibration table when high pressure air enters the vibration table, opening the air compressor, supplying lower air pressure (far lower than safe air pressure), and checking the air tightness of the connecting pipe.
④ the air pressure is gradually and slowly adjusted within the range below the allowable air pressure and the desired maximum air pressure of the vibration table according to the frequency and amplitude read by the vibration tester.
⑤ the air compressor is turned off and the test piece is inspected.
The invention is easy to assemble and disassemble, has large controllable range of vibration frequency (range of 0.1 Hz-400 Hz) and amplitude (range of 0-5 mm), can be repeatedly used and has lower cost.
The device can be tested along with vibration, started and stopped instantly, installed at will in space, has the advantages of long service life, low gas consumption, safety, energy conservation, small volume, less faults, simple and easy installation and maintenance, low manufacturing cost, obvious vibration effect and stable vibration after being tested by an indoor model.
In the drawings, like reference numerals designate identical or functionally equivalent parts throughout the several views, for the purpose of facilitating the description of the present invention. All the drawings are only for convenience of explaining technical contents of the present invention; the numbers, positions of the components, interrelationships between the components, and dimensions of the components used to construct the preferred embodiment do not limit the technical solution itself, but extend to the entire area covered by the technical field.
The embodiments described above with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (4)
1. The utility model provides a pneumatic vibration test device which characterized in that: the method comprises the following steps:
the pneumatic vibrator is used for providing vibrating air pressure for testing; the pneumatic vibrator is provided with an air inlet part, and the air inlet part is connected with air supply equipment;
the vibration table is used for accommodating a test piece to be detected, the vibration table is fixedly connected with the pneumatic vibrator, the vibration of the pneumatic vibrator is transmitted to the vibration table, and the vibration table drives the test piece to vibrate; the vibration table is in a box shape and used for accommodating a test piece to be tested, the upper part of the vibration table is open, and the bottom of the vibration table is closed;
the mounting support is used for mounting and fixing the vibrating table;
the vibration tester is arranged on the side surface of the vibration table and used for acquiring the vibration amplitude and frequency of the vibration table to be used as a basis for regulating and controlling the air inlet pressure of the pneumatic vibrator;
the pneumatic vibrator is a turbine pneumatic vibrator, the turbine pneumatic vibrator enables an eccentric turbine in the pneumatic vibrator to rotate on a track at a high speed through air pressure of the air inlet component to generate a high-power centrifugal force, a certain amplitude and frequency are provided, and the frequency and amplitude of the vibration table are changed by changing the pressure of the air pressure output by connected air supply equipment and the size of the pneumatic vibrator; the vibration generated by the pneumatic vibrator is transmitted to the vibration table, so that the test piece to be detected in the vibration table generates vibration with specified frequency;
the vibration table is connected with the mounting support through a damping connecting piece, and the damping connecting piece is used for supporting the vibration table on one hand and reducing the impact of vibration on the mounting support on the other hand;
the mounting support comprises a base, a transverse plate and a vertical plate, wherein the transverse plate and the vertical plate are arranged above the base; the other end of the transverse plate is fixed on the base; the base is provided with a mounting hole, and the mounting hole is used for mounting the base on an experiment platform by mounting a clamping screw; the mounting support is formed by welding stainless steel plates, and reinforcing ribs are welded at the vertical plate part to prevent the vertical plate and the transverse plate from being broken due to stress concentration at the right angle part for connecting;
the device can be tested along with vibration, started and stopped instantly, and installed randomly in space.
2. The pneumatic vibration testing apparatus of claim 1, wherein: the pneumatic vibrator is connected with the vibration table through threads and transmits vibration.
3. The pneumatic vibration testing apparatus of claim 1, wherein: the air inlet component is connected with the air supply equipment through the conversion connector and the binding hoop, so that high-pressure air is prevented from being leaked.
4. A pneumatic vibration testing method using the apparatus of any one of claims 1 to 3, characterized in that: the method comprises the following steps:
fixing the mounting support on an experiment platform, and placing a test piece to be tested into a vibration table;
opening the vibration tester;
connecting a pneumatic vibrator with air supply equipment, opening the air supply equipment, supplying low air pressure, and checking the air tightness of a connecting pipeline;
gradually and slowly adjusting the air pressure within the range below the allowable air pressure and the required maximum air pressure of the vibration table according to the frequency and the amplitude read by the vibration tester;
and closing the gas supply equipment and detecting the test piece to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266969.1A CN108548645B (en) | 2018-03-29 | 2018-03-29 | Pneumatic vibration test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266969.1A CN108548645B (en) | 2018-03-29 | 2018-03-29 | Pneumatic vibration test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108548645A CN108548645A (en) | 2018-09-18 |
| CN108548645B true CN108548645B (en) | 2020-04-28 |
Family
ID=63517182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810266969.1A Active CN108548645B (en) | 2018-03-29 | 2018-03-29 | Pneumatic vibration test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108548645B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361151A (en) * | 2019-07-30 | 2019-10-22 | 中国包装科研测试中心 | A kind of low pressure vibration-testing apparatus and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179516A (en) * | 1988-02-18 | 1993-01-12 | Tokkyo Kiki Kabushiki Kaisha | Variation control circuit having a displacement detecting function |
| CN100394156C (en) * | 2005-05-23 | 2008-06-11 | 苏州试验仪器总厂 | Triaxiality and six degrees of freedom test bench for airdriven vibration, transportation bump, and slant swing |
| US7752914B2 (en) * | 2007-11-15 | 2010-07-13 | Venturedyne, Ltd. | Monitoring of independent vibrators |
| CN201378096Y (en) * | 2009-03-31 | 2010-01-06 | 浪潮电子信息产业股份有限公司 | Pneumatic testing device |
| CN102607789A (en) * | 2012-03-27 | 2012-07-25 | 江苏白雪电器股份有限公司 | Method and device for controlling accelerated speed of air hammer type vibrating table |
| CN205929790U (en) * | 2016-08-29 | 2017-02-08 | 安徽创源文化发展有限公司 | Tremble paper shaking table |
-
2018
- 2018-03-29 CN CN201810266969.1A patent/CN108548645B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108548645A (en) | 2018-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202947939U (en) | Striking equivalent underwater explosion impact loading experiment testing device system | |
| CN110926936B (en) | Test piece dynamic lateral strain measuring device and method based on SHPB test system | |
| CN108548645B (en) | Pneumatic vibration test device and method | |
| CN109855828B (en) | Bolt group connection vibration reliability experiment device and test method | |
| CN103712767A (en) | Pneumatic device for pneumatic type horizontal impact table | |
| CN106644337A (en) | Vibration experimental platform for thin-walled member fatigue test | |
| CN208432466U (en) | Pressurized strut vibration impact experiment fixture | |
| CN112748065A (en) | Method for testing friction abnormal sound performance of automobile sealing strip | |
| CN209485644U (en) | A kind of bolt group connection vibration reliability experimental provision | |
| CN201917442U (en) | High-pressure leakage measuring machine | |
| CN208860610U (en) | A kind of automotive hub bearing dynamic vibration durable test stand | |
| CN202119626U (en) | Long shaft driving system for engine noise room | |
| CN108732250A (en) | The universal joint adaptive regulating mechanism of non-destructive testing device probe mounting platform | |
| CN205879504U (en) | Simulation real vehicle operating condition's air spring fatigue testing machine | |
| CN201914870U (en) | Crane and balancing weight device thereof | |
| CN209247526U (en) | Construction material tensile strength detection device | |
| CN215414800U (en) | Device for testing strength of handle of small steel cylinder | |
| CN210400792U (en) | Experimental device for be used for building curtain wall construction anti-wind to press and detect | |
| CN212158992U (en) | Pipeline fluid-solid coupling vibration test device | |
| CN112362333B (en) | Full-size resonance bending fatigue test equipment for pipe shaft component and use method thereof | |
| CN211785110U (en) | Harmful gas detection device in gas piping lane work progress | |
| CN201496767U (en) | Aerated tool equipment of shock absorber | |
| CN207111370U (en) | A kind of damping air compressor | |
| CN206111470U (en) | Hang formula damper | |
| CN201378096Y (en) | Pneumatic testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |