CN105115707B - A kind of joint curved surface faying face dynamic characteristic test device and method of testing - Google Patents
A kind of joint curved surface faying face dynamic characteristic test device and method of testing Download PDFInfo
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- CN105115707B CN105115707B CN201510442437.5A CN201510442437A CN105115707B CN 105115707 B CN105115707 B CN 105115707B CN 201510442437 A CN201510442437 A CN 201510442437A CN 105115707 B CN105115707 B CN 105115707B
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Abstract
A kind of joint curved surface faying face dynamic characteristic test device and method of testing, it includes excitation system, loading system, experimental bench system, signal processing and analysis processing system；Excitation system is made up of vibrator, vibrator drop in beam and support；Loading system is made up of loading bolt A, loading spring A, loading bolt B, loading spring B, loading bolt C, loading spring C, loading bolt D, loading spring D；Experimental bench system includes pedestal, lower bridge plate, test block to be measured, upper bridge plate；Computer in signal processing and analysis processing system is by sending known pumping signal, while making vibrator progress exciting, the response signal in acquisition system, and carries out computing, you can obtain the dynamic characteristic of joint curved surface faying face.The present invention can realize the joint curved surface faying face dynamic characteristic for measuring a variety of different materials, with interchangeability well, and simple to operate, and data are reliable.
Description
Technical field
The present invention relates to the dynamic characteristic test of joint curved surface faying face, joint curved surface is combined using known pumping signal
Row energization is entered in face, and gathers its response signal, obtain the dynamic characteristic of its faying face, it is adaptable to comparative study not same material
The dynamic characteristic of joint curved surface faying face, belongs to the dynamic characteristic test technical field of joint curved surface faying face.
Background technology
With industrial expansion, the requirement more and more higher to plant equipment precision, meanwhile, the exploration to various new materials
Also more and more deep, faying face is largely present in mechanical structure, and be as link the weakest in mechanical structure, its
The dynamic characteristics such as rigidity, damping play vital effect for the performance of complete machine.
At present, curved surface faying face is widely present in various mechanical structures, such as hinged secondary, the bearing rolling of the sphere in mechanism
Son etc., the curved surface faying face being made for different materials can obtain its dynamic characteristic, and draw different materials by contrast
The performance of the curved surface faying face being made is good and bad, and it plays vital effect in actual applications, but engineer applied at present
In not for such issues that solution.The dynamic characteristic of traditional curved surface faying face is often by the flat of same material
Face faying face carries out what analogy was obtained, because the architectural feature of curved surface faying face inherently is more complicated, causes certain material
Plane faying face dynamic characteristic can not completely replace its curved surface faying face dynamic characteristic, so plant method error it is larger；
In addition, although some testing stands can meet the dynamic characteristic test of curved surface faying face, it does not have preferable interchangeability, i.e.,
Same testing stand can not test the dynamic characteristic of the joint curved surface faying face of not same material, and its testing stand cost is high, mutually
Transsexual difference.
Therefore, find it is a kind of can be accurately, with good interchangeability and a test bed testing can be realized not
The experimental rig of the curved surface faying face of same material is significantly.
The content of the invention
The present apparatus uses interchangeable test block to be measured, and the joint of not same material can be tested using same experimental rig
The dynamic characteristic of curved surface faying face, can greatly improve the recycling rate of waterused of device, and experimental provision uses Challenge-response
Closed signal analysis and processing method, the dynamic characteristic of joint curved surface faying face can accurately be measured, its measurement side
Method is simple and easy to do, with good engineering practicability.
A kind of joint curved surface faying face dynamic characteristic test device, the test device includes exciting device and signal acquisition point
Analyse processing system；Described exciting device is made up of excitation system, loading system, experimental bench system.
Excitation system is made up of vibrator (8), vibrator drop in beam (7) and support (9).In use, support (9) rises
To the effect of support vibrator (8), it is fixed with pedestal (13) by bolt for support (9) first, then vibrator
Drop in beam (7) is fixed by bolt with support (9), and vibrator (8) is secured by bolts on vibrator drop in beam (7), is led to
The luffing angle of the bolt adjusting vibration exciter (8) between vibrator (8) and vibrator drop in beam (7) is overregulated, when it is just vertical
When upper bridge plate (12), bolt is tightened, now, vibrator (8), vibrator drop in beam (7), support (9) constitute one can not be mutual
Mobile entirety.
Experimental bench system includes lower bridge plate (1), upper bridge plate (12), pedestal (13), test block to be measured (20)；Test block (20) to be measured
It is placed between lower bridge plate (1) and upper bridge plate (12), test block (20) one end to be measured is the face of cylinder, and the other end is spherical, to be tested
It is evenly equipped with block (20) face of cylinder in the middle of three screwed holes, test block (20) to be measured and is provided with oil storage hole；The surface of lower bridge plate (1) is provided with
The groove coordinated with the spherical of test block to be measured (20).
The upper surface center of upper bridge plate (12) is provided with a square groove, the center of square groove provided with one with it is to be tested
The through hole of block (20) oil storage hole connection；Square groove periphery is provided with screwed hole corresponding with (20) three screwed holes of test block to be measured, side
Shape groove effectively reduces the bolt connection length between bridge plate (12) and test block to be measured (20), it is ensured that its coupling stiffness is much larger than
The contact stiffness of faying face, square groove, which should be opened, to be had the dimensions, it is ensured that with the locus for installing impedance transducer (2),
A through hole for running through upper bridge plate (12) upper and lower surface is provided with the middle position of square groove, it is therefore an objective to be measured without pulling down
In the case of test block (20), oiling is carried out to its oil storage hole.
Pedestal (13) is fixed on parent, lower bridge plate (1) is bolted on pedestal (13), and will be to be measured
Test block (20) is connected by screw on bridge plate (12), can effectively be protected by test block to be measured (20) and the connection of upper bridge plate (12)
The connection tightness and enough rigidity of the two are demonstrate,proved, the sphere of test block to be measured (20) is aligned to the ball of lower bridge plate (1) center
Face groove, and be placed therein.
Loading system is by loading bolt A (10), loading spring A (3), loading bolt B (6), loading spring B (4), loading spiral shell
Bolt C (16), loading spring C (15), loading bolt D (17), loading spring D (18) compositions.Make upper bridge by four loading bolts
Plate (12) with lower bridge plate (1) consolidate and is connected, in connection procedure, bridge plate (12) upper surface and lower bridge plate (1) in strict guarantee
Collimation, it is to avoid not just, except curved face contact part, any part of upper bridge plate (12) should not be with lower bridge plate for installation site
(1) part contact.
In installation process, loading spring A (3) is arranged on the first group of loading unit constituted on loading bolt A (10), plus
Carry spring B (4) and be arranged on the second group of loading unit constituted on loading bolt B (6), loading spring C (15) is arranged on loading spiral shell
The 3rd group of loading unit constituted on bolt C (16), loading spring D (18) is arranged on the 4th group constituted on loading bolt D (1) and added
Carrier unit, four groups of loading units are arranged symmetrically on the center of upper bridge plate (12).
Impedance transducer (2) is placed in the center of bridge plate (12), and by the excitation head and impedance sensing of vibrator (8)
Device (2) is attached, and piezoelectric transducer A (11) and piezoelectric transducer B (5) is arranged symmetrically on the center of upper bridge plate (12),
Piezoelectric transducer C (14) and piezoelectric transducer D (19) is arranged symmetrically on lower bridge plate (1) center.
Appropriate oil is instilled in upward bridge plate (12) centre bore, instill oil mass number to fill up test block to be measured (20) just
The oil storage hole of center is advisable, and stands a period of time, impedance transducer (2) is positioned over to the center of upper bridge plate (12).
, should in order to ensure the stationarity in process of the test because driving link vibrator (8) hangs on the highest point of equipment
Ensure that support (9) has preferable rigidity, in the present apparatus using the method for the arrangement reinforcement at two columns of support (9) come
Realize.
In signal processing and analysis processing system, computer E1 sends signal instruction, is put signal by power amplifier E4
Greatly, and export and give vibrator (8), vibrator (8) is carried out exciting, piezoelectric transducer A (11) and pressure with a known signal
The data of bridge plate (12) in electric transducer B (5) collection, and adopt the signal output after amplification to signal by charge amplifier E3
Truck E2, equally, the data of piezoelectric transducer C (14) and the lower bridge plate (1) of piezoelectric transducer D (19) collections amplify by electric charge
Signal output after amplification is given data acquisition card E2, computer E1 to be carried out by the data in signal Analysis capture card E2 by device E3
Computing, so as to draw the dynamic characteristic of joint curved surface faying face.
A kind of joint curved surface faying face dynamic characteristic test device carries out joint curved surface faying face dynamic characteristic test method,
This method comprises the following steps,
Step1. before measuring, detected materials are processed into the test block to be measured (20) of standard, and be fixed in by bolt
On upper bridge plate (12), fixing bolt is tightened, it is ensured that larger coupling stiffness；Pedestal (13) is anchored on the large platform of workshop, made
For parent, it is ensured that its stability and horizontal positioned；By lower bridge plate (1) by bolt, it is fixed on pedestal, and will wherein
Between curve pocket wiped clean, it is to avoid debris exist；
Step2. the upper bridge plate (12) for installing test block to be measured (20) is positioned on lower bridge plate (1), and passes through four
It is fixed loading unit, in installation process, should ensure that between bridge plate (12) and lower bridge plate (1) except curved surface faying face
It is contactless elsewhere outside contact；
If step3. curved surface faying face in joint needs to be tested under oil lubrication state, test block (20) to be measured is using more
Instilled in hole oil-containing material, the hole that oil now is passed through into upper bridge plate (12) center position, it is entered along inwall to be measured
In oil storage hole in test block (20), stand after a period of time, when oil is penetrated at the curved surface faying face of joint, you can carry out joint
Curved surface faying face dynamic characteristic test is tested, and is measured according to non-oil lubrication faying face, you can omit this step；
Step4. mounting bracket (9), make it be fixed on pedestal (13) by bolt, and vibrator drop in beam (7) is passed through into spiral shell
Bolt is fixed on support (9), is installed vibrator (8), and the luffing angle of adjusting vibration exciter (8), is made it along upper bridge plate (12)
Normal direction, tighten the bolt on vibrator (8)；
Step5., impedance transducer (2) is positioned over to the center position of upper bridge plate (12), and by the exciting of vibrator (8)
Head is attached with impedance transducer (2), respectively that piezoelectric transducer A (11), piezoelectric transducer B (5) is symmetrical by magnet base
Bridge plate (12) upper surface is arranged in, piezoelectric transducer C (14) and piezoelectric transducer D (19) are symmetrically arranged in lower bridge plate (1)
Upper surface；
Step6. known signal is sent by computer E1, vibrator (8) is carried out exciting to system, pass through sensor
The response signal of system is collected into, signal is handled with power amplifier E4 by charge amplifier E3, you can closed
The dynamic characteristic of pitch surface faying face.
Compared with prior art, the invention has the advantages that.
1st, present apparatus structure is relatively simple, and measuring method is simple and easy to apply, and installation cost is relatively low, and it has economical well
Property.
The correlation component such as sensor, data collecting card for the 2nd, being selected in the present apparatus is all very ripe product on the market,
Measurement scheme is directly effective, and preferably, it has good engineering practicability to Project Realization.
3rd, for the dynamic characteristic of the measurement not curved surface faying face of same material, test block to be measured only need to be replaced, entirely
Experimental provision has good interchangeability.
4th, experimental bench can test the dynamic characteristic of the joint curved surface faying face under immersion oil state and under non-immersion oil state respectively,
It has good versatility.
5th, for signal processing and analysis processing unit, encouraged using more structurally sound known signal, pick up response signal, and
Signal acquisition is carried out using multiple sensors, the reliability of test data is ensure that well.
Therefore, joint curved surface faying face dynamic characteristic test device of the present invention solves current in the curved surface faying face of joint
The problem of existing, can more facilitate using the present apparatus, accurately measure not same material joint curved surface faying face dynamic
Characteristic, and its is easy to operation, and data are reliable.
Brief description of the drawings
Fig. 1 is measurement apparatus overall construction drawing；
Fig. 2 is overall measurement apparatus front view；
Fig. 3 is loading system and experimental bench system front view；
Fig. 4 is loading system and positive two side view of experimental bench system；
Fig. 5 is experimental bench system profile；
Fig. 6 is block structure schematic diagram to be tested；
Fig. 7 is supporting structure schematic diagram；
Fig. 8 is data collection and analysis processing system block diagram.
In figure：1st, lower bridge plate, 2, impedance transducer, 3, loading spring A, 4, loading spring B, 5, piezoelectric transducer B, 6 plus
Carry bolt B, 7, vibrator drop in beam, 8, vibrator, 9, support, 10, loading bolt A, 11, piezoelectric transducer A, 12, upper bridge plate,
13rd, pedestal, 14, piezoelectric transducer C, 15, loading spring C, 16, loading bolt C, 17, loading bolt D, 18, loading spring D,
19th, piezoelectric transducer D, 20, test block to be measured.
Embodiment
1~Fig. 8 is described further to the specific embodiment of the invention below in conjunction with the accompanying drawings：
A kind of joint curved surface faying face dynamic characteristic test device, the test device includes exciting device and signal acquisition point
Analyse processing unit；Described exciting device is made up of excitation system, loading system, experimental bench system；
Fig. 1 is the assembling overall pattern of measurement apparatus, and the device is divided into three parts, respectively excitation system, loading system
And experimental bench system.
As depicted in figs. 1 and 2, excitation system is made up of vibrator (8), vibrator drop in beam (7) and support (9).Using
During, support (9) plays a part of support vibrator (8), and it is carried out support (9) to by bolt with pedestal (13) first
Fixed, then vibrator drop in beam (7) is fixed by bolt with support (9), and vibrator (8) is secured by bolts in into exciting
On device drop in beam (7), pass through the angle of pitch of the bolt adjusting vibration exciter (8) between adjusting vibration exciter (8) and vibrator drop in beam (7)
Degree, when it is exactly perpendicular to upper bridge plate (12), tightens bolt, now, vibrator (8), vibrator drop in beam (7), support (9) group
Into the entirety that can not be mutually mobile.
Experimental bench system includes lower bridge plate (1), upper bridge plate (12), pedestal (13), test block to be measured (20)；Test block (20) to be measured
It is placed between lower bridge plate (1) and upper bridge plate (12), test block (20) one end to be measured is the face of cylinder, and the other end is spherical, to be tested
It is evenly equipped with block (20) face of cylinder in the middle of three screwed holes, test block (20) to be measured and is provided with oil storage hole；The surface of lower bridge plate (1) is provided with
The groove coordinated with the spherical of test block to be measured (20)；
The upper surface center of upper bridge plate (12) is provided with a square groove, the center of square groove provided with one with it is to be tested
The through hole of block (20) oil storage hole connection；Square groove periphery is provided with screwed hole corresponding with (20) three screwed holes of test block to be measured, side
Shape groove effectively reduces the bolt connection length between bridge plate (12) and test block to be measured (20), it is ensured that its coupling stiffness is much larger than
The contact stiffness of faying face, square groove, which should be opened, to be had the dimensions, it is ensured that with the locus for installing impedance transducer (2),
A through hole for running through upper bridge plate (12) upper and lower surface is provided with the middle position of square groove, it is therefore an objective to be measured without pulling down
In the case of test block (20), oiling is carried out to its oil storage hole；
Pedestal (13) is fixed on parent, lower bridge plate (1) is bolted on pedestal (13), and will be to be measured
Test block (20) is connected by screw on bridge plate (12), can effectively be protected by test block to be measured (20) and the connection of upper bridge plate (12)
The connection tightness and enough rigidity of the two are demonstrate,proved, the sphere of test block to be measured (20) is aligned to the ball of lower bridge plate (1) center
Face groove, and be placed therein.
As shown in Figure 3 and Figure 4, loading system is by loading bolt A (10), loading spring A (3), loading bolt B (6), loading
Spring B (4), loading bolt C (16), loading spring C (15), loading bolt D (17), loading spring D (18) compositions.Pass through four
Loading bolt make bridge plate (12) and lower bridge plate (1) carry out it is firm be connected, in connection procedure, bridge plate (12) upper table in strict guarantee
The collimation of face and lower bridge plate (1), it is to avoid installation site not just, except curved face contact part, any part of upper bridge plate (12)
It should not be contacted with the part of lower bridge plate (1).
In installation process, loading spring A (3) is arranged on the first group of loading unit constituted on loading bolt A (10), plus
Carry spring B (4) and be arranged on the second group of loading unit constituted on loading bolt B (6), loading spring C (15) is arranged on loading spiral shell
The 3rd group of loading unit constituted on bolt C (16), loading spring D (18) is arranged on the 4th group constituted on loading bolt D (1) and added
Carrier unit, four groups of loading units are arranged symmetrically on the center of upper bridge plate (12).
Impedance transducer (2) is placed in the center of bridge plate (12), and by the excitation head and impedance sensing of vibrator (8)
Device (2) is attached, and piezoelectric transducer A (11) and piezoelectric transducer B (5) is arranged symmetrically on the center of upper bridge plate (12),
Piezoelectric transducer C (14) and piezoelectric transducer D (19) is arranged symmetrically on lower bridge plate (1) center.
As shown in figure 5, appropriate oil is instilled in bridge plate (12) centre bore upwards, instill oil mass number treated with filling up just
The oil storage hole of test block (20) center is advisable, and stands a period of time, impedance transducer (2) is positioned in upper bridge plate (12)
Heart position.
It is illustrated in figure 6 the schematic diagram of test block to be measured (20) and the schematic diagram of middle oil storage hole.
The structural representation of support (9) is illustrated in figure 7, because driving link vibrator (8) hangs on the highest point of equipment,
In order to ensure the stationarity in process of the test, it should ensure that support (9) has in preferable rigidity, the present apparatus and use in support
(9) method of reinforcement is arranged at two columns to realize.
Computer E1 sends signal instruction, is amplified signal by power amplifier E4, and exports and give vibrator (8), makes
Vibrator (8) carries out exciting, piezoelectric transducer A (11) and bridge plate in piezoelectric transducer B (5) collection with a known signal
(12) data, and give data acquisition card E2, equally, piezoelectric transducer by the signal output after amplification by charge amplifier E3
The data of the lower bridge plate (1) of C (14) and piezoelectric transducer D (19) collections, by charge amplifier E3 by the signal output after amplification
Data acquisition card E2 is given, computer E1 carries out computing by the data in signal Analysis capture card E2, so as to draw joint curved surface
The dynamic characteristic of faying face.
An example of the present invention is the foregoing is only, size, shape of test block etc. can be treated and carry out appropriate change
Become, enable the dynamic characteristic parameter measurement of other curved surface faying faces, such as elliptical-shaped contact face, conical contact surface construction etc.
Deng its test device is similar to method of testing to this example.As long as its measurement apparatus Design of Mechanical Structure and overall measuring principle
Describe consistent with the present invention, be regarded as the scope included by the present invention.
Claims (5)
1. a kind of joint curved surface faying face dynamic characteristic test device, it is characterised in that：The test device include exciting device with
Signal processing and analysis processing system；Described exciting device is made up of excitation system, loading system, experimental bench system；
Excitation system is made up of vibrator (8), vibrator drop in beam (7) and support (9)；In use, support (9) plays branch
The effect of vibrator (8) is supportted, support (9) is fixed by bolt with pedestal (13) first, then vibrator drop in beam (7) leads to
Cross bolt to be fixed with support (9), vibrator (8) is secured by bolts on vibrator drop in beam (7), by adjusting exciting
The luffing angle of bolt adjusting vibration exciter (8) between device (8) and vibrator drop in beam (7), when it is exactly perpendicular to upper bridge plate
(12) when, bolt is tightened, now, it is whole that vibrator (8), vibrator drop in beam (7), support (9) composition one can not be mutually mobile
Body；
Experimental bench system includes lower bridge plate (1), upper bridge plate (12), pedestal (13) and test block to be measured (20)；Test block (20) to be measured is put
Between lower bridge plate (1) and upper bridge plate (12), test block (20) one end to be measured is the face of cylinder, and the other end is spherical, test block to be measured
(20) it is evenly equipped with the face of cylinder in the middle of three screwed holes, test block (20) to be measured and is provided with oil storage hole；The surface of lower bridge plate (1) be provided with
The spherical groove that the spherical of test block (20) to be measured coordinates；
The upper surface center of upper bridge plate (12) is provided with a square groove, and the center of square groove is provided with one and test block to be measured
(20) through hole of oil storage hole connection；Square groove periphery is provided with screwed hole corresponding with (20) three screwed holes of test block to be measured, square
Groove effectively reduces the bolt connection length between bridge plate (12) and test block to be measured (20), it is ensured that its coupling stiffness is much larger than knot
The contact stiffness in conjunction face, square groove, which is opened, to be had the dimensions, it is ensured that described with the locus for installing impedance transducer (2)
Through hole is in the middle position of square groove, through upper bridge plate (12) upper and lower surface, it is therefore an objective to without pulling down test block to be measured (20)
In the case of, carry out oiling to its oil storage hole；
Pedestal (13) is fixed on parent, lower bridge plate (1) is bolted on pedestal (13), and by test block to be measured
(20) it is connected by screw on bridge plate (12), two is can effectively ensure that by the connection of test block to be measured (20) and upper bridge plate (12)
The connection tightness and enough rigidity of person, the spherical of test block to be measured (20) is aligned the sphere of lower bridge plate (1) center
Groove, and be placed therein；
Loading system is by loading bolt A (10), loading spring A (3), loading bolt B (6), loading spring B (4), loading bolt C
(16), loading spring C (15), loading bolt D (17), loading spring D (18) compositions；Make upper bridge plate by four loading bolts
(12) with lower bridge plate (1) consolidate and be connected, in connection procedure, bridge plate (12) upper surface and lower bridge plate (1) in strict guarantee
Collimation, it is to avoid installation site not just, except curved face contact part, any part of upper bridge plate (12) not with lower bridge plate (1)
Part is contacted；
In installation process, loading spring A (3) is arranged on loading bolt A (10) and constitutes first group of loading unit, loading spring
B (4), which is arranged on loading bolt B (6), constitutes second group of loading unit, and loading spring C (15) is arranged on loading bolt C (16)
The 3rd group of loading unit is constituted, loading spring D (18), which is arranged on loading bolt D (17), constitutes the 4th group of loading unit, four groups
Loading unit is arranged symmetrically on the center of upper bridge plate (12)；
The signal processing and analysis processing system include impedance transducer (2), piezoelectric transducer A (11), piezoelectric transducer B (5),
Piezoelectric transducer C (14) and piezoelectric transducer D (19)；Impedance transducer (2) is placed in the center of bridge plate (12), and will swash
Shake the excitation head of device (8) and impedance transducer (2) is attached, piezoelectric transducer A (11) and piezoelectric transducer B (5) is on upper
The center of bridge plate (12) is arranged symmetrically, and piezoelectric transducer C (14) and piezoelectric transducer D (19) are on lower bridge plate (1) center
It is arranged symmetrically.
2. a kind of joint curved surface faying face dynamic characteristic test device according to claim 1, it is characterised in that：Upward bridge
Instill appropriate oil in plate (12) through hole, instill oil mass number using fill up just the oil storage hole of test block to be measured (20) center as
Preferably, a period of time is stood, impedance transducer (2) is positioned over to the center of upper bridge plate (12).
3. a kind of joint curved surface faying face dynamic characteristic test device according to claim 1, it is characterised in that：In support
(9) reinforcement is arranged at two columns to ensure the rigidity of support (9).
4. a kind of joint curved surface faying face dynamic characteristic test device according to claim 1, it is characterised in that：Signal is adopted
In set analysis processing system, computer (E1) sends signal instruction, is amplified signal by power amplifier (E4), and export to
Vibrator (8), makes vibrator (8) carry out exciting, piezoelectric transducer A (11) and piezoelectric transducer B (5) with a known signal
The data of bridge plate (12) in collection, and data acquisition card (E2) is given by the signal output after amplification by charge amplifier (E3),
Equally, the data of the lower bridge plate (1) of piezoelectric transducer C (14) and piezoelectric transducer D (19) collections, will by charge amplifier (E3)
Signal output after amplification gives data acquisition card (E2), and computer (E1) is carried out by the data in signal Analysis capture card (E2)
Computing, so as to draw the dynamic characteristic of joint curved surface faying face.
5. the joint curved surface faying face dynamic characteristic test method carried out using test device described in claim 1, this method bag
Include following steps,
Before step 1. measurement, detected materials are processed into the test block to be measured (20) of standard, and Shang Qiao is fixed in by bolt
On plate (12), fixing bolt is tightened, it is ensured that larger coupling stiffness；Pedestal (13) is anchored on the large platform of workshop, mother is used as
Body, it is ensured that its stability and horizontal positioned；Lower bridge plate (1) is bolted on pedestal, and by the middle of lower bridge plate (1)
Spherical groove wiped clean, it is to avoid debris exist；
The upper bridge plate (12) for installing test block to be measured (20) is positioned on lower bridge plate (1) by step 2., and passes through four groups of loadings
It is fixed unit, in installation process, should ensure that between bridge plate (12) and lower bridge plate (1) except curved surface faying face is contacted
Outside, it is contactless elsewhere；
If step 3. joint curved surface faying face needs to be tested under oil lubrication state, test block (20) to be measured is contained using porous
Instilled in light wood material, the through hole that oil now is passed through into upper bridge plate (12) center position, it is entered along inwall to be tested
In oil storage hole in block (20), stand after a period of time, when oil is penetrated at the curved surface faying face of joint, you can carry out joint bent
Face faying face dynamic characteristic test experiment, is measured, you can omit this step according to non-oil lubrication faying face；
Step 4. mounting bracket (9), makes it be fixed on pedestal (13) by bolt, and vibrator drop in beam (7) is solid by bolt
It is scheduled on support (9), vibrator (8) is installed, and the luffing angle of adjusting vibration exciter (8) makes its method along upper bridge plate (12)
To tightening the bolt on vibrator (8)；
Impedance transducer (2) is positioned over the center position of upper bridge plate (12) by step 5., and by the excitation head of vibrator (8) with
Impedance transducer (2) is attached, and is respectively arranged symmetrically piezoelectric transducer A (11), piezoelectric transducer B (5) by magnet base
In upper bridge plate (12) upper surface, piezoelectric transducer C (14) and piezoelectric transducer D (19) are symmetrically arranged in respectively by magnet base
Lower bridge plate (1) upper surface；
Step 6. sends known signal by computer (E1), vibrator (8) is carried out exciting to system, is received by sensor
Collect the response signal of system, signal is handled with power amplifier (E4) by charge amplifier (E3), you can obtain
The dynamic characteristic of joint curved surface faying face.
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|---|---|---|---|---|
| CN107063608A (en) * | 2017-05-22 | 2017-08-18 | 北京强度环境研究所 | A kind of lossless rudder system modal test device |
| CN109141785B (en) * | 2018-07-26 | 2020-04-14 | 沈阳理工大学 | Detection device for measuring parameters of joint surface |
| CN109540521B (en) * | 2019-01-21 | 2021-03-23 | 三峡大学 | Ball bearing wearing principle test bed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1626079A1 (en) * | 1989-02-03 | 1991-02-07 | Предприятие П/Я М-5729 | Test set for check of contact pressure exerted on bearing surface of threaded joint |
| CN101915663A (en) * | 2010-07-29 | 2010-12-15 | 西安理工大学 | Tangential dynamic and static characteristic testing device of unit area faying surface |
| CN101968405A (en) * | 2010-08-27 | 2011-02-09 | 北京工业大学 | Device and method for testing dynamic characteristic of combined surface |
| CN102095562A (en) * | 2010-12-31 | 2011-06-15 | 北京工业大学 | Testing device and method for dynamic characteristic of sliding combination surface |
| CN102410923A (en) * | 2011-08-09 | 2012-04-11 | 西安理工大学 | Rigid and non-linear relation testing device and method of cylindrical fit joint surface |
-
2015
- 2015-07-26 CN CN201510442437.5A patent/CN105115707B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1626079A1 (en) * | 1989-02-03 | 1991-02-07 | Предприятие П/Я М-5729 | Test set for check of contact pressure exerted on bearing surface of threaded joint |
| CN101915663A (en) * | 2010-07-29 | 2010-12-15 | 西安理工大学 | Tangential dynamic and static characteristic testing device of unit area faying surface |
| CN101968405A (en) * | 2010-08-27 | 2011-02-09 | 北京工业大学 | Device and method for testing dynamic characteristic of combined surface |
| CN102095562A (en) * | 2010-12-31 | 2011-06-15 | 北京工业大学 | Testing device and method for dynamic characteristic of sliding combination surface |
| CN102410923A (en) * | 2011-08-09 | 2012-04-11 | 西安理工大学 | Rigid and non-linear relation testing device and method of cylindrical fit joint surface |
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| CN105115707A (en) | 2015-12-02 |
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