CN2078875U - Nondestructive detector of strength of sintered brick - Google Patents
Nondestructive detector of strength of sintered brick Download PDFInfo
- Publication number
- CN2078875U CN2078875U CN 90213642 CN90213642U CN2078875U CN 2078875 U CN2078875 U CN 2078875U CN 90213642 CN90213642 CN 90213642 CN 90213642 U CN90213642 U CN 90213642U CN 2078875 U CN2078875 U CN 2078875U
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- vibration
- palse
- sensor
- cushion
- elastic base
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Abstract
The utility model relates to a nondestructive detector of strength of sintered brick, comprising an elastic base, a pulse vibration excitor, a sensor, a signal amplifier, a driver and a computer. Adopting the hammering method, the utility model makes the test specimen generate vibration, and the vibration signal is input to the computer to carry out spectroscopic analysis. According to the principles that the natural frequency is relevant with the elastic modulus and the elastic modulus is relevant with the intensity, the intensity of the test specimen is reckoned upon. The utility model has the advantages of simple and quick operation and high precision, and the test specimen has no breakage.
Description
The utility model relates to a kind of fired brick intensity the cannot-harm-detection device, belongs to strength of materials detecting instrument.
China all is to adopt general Material Testing Machine to the intensity detection of fired brick at present, method according to standard GB 2542-81 defined is carried out crash test, finish battery of tests, need the time of 3-4, on human and material resources and starting material, all exist great waste.Simultaneously, the method for cementing is adopted in this detection, has changed the original physical characteristics of fired brick, also exists certain error.
The purpose of this utility model is at the problems referred to above, provide a kind of simply, fired brick intensity the cannot-harm-detection device fast.
Fired brick intensity the cannot-harm-detection device of the present utility model comprises the elastic base of placing sample, make sample produce mechanical vibration Palse vibration excitor, send control signal and carry out the computing machine of data processing and the driver of transmission computer control signal, the sensor and the signal amplifier of transmission sample vibration signal.Described elastic base comprises two pillars of base plate, cushion, backing plate and supporting sample, anchor post above the backing plate, and the bonding cushion in the backing plate back side, two pillars should be positioned on two vibration nodal points of sample, and cushion can be placed on the base plate.Described Palse vibration excitor comprises electromagnet and impact bar and the guide pin bushing of being made up of coil, iron core and shell, and impact bar is fixed on the iron core termination, and guide pin bushing is between coil and iron core, and the guiding iron core moves.Palse vibration excitor is vertically fixed on the elastic base top, and its impact bar is positioned in the middle of two pillars of elastic base.Described sensor is clamped on the sample by live splint, and the position that contacts with sample on the live splint cleat plate face is fixed with cushion, and sensor is vertically fixed on the clamping plate.The potential pulse instruction of computing machine output becomes the voltage signal enter drive through digital to analog converter, through amplifying the rear drive relay, make the Palse vibration excitor electromagnet coil power work that is connected with direct supply, iron core moves downward, impact specimen makes it produce vibration.The sensor that is clamped on the sample will receive the analog to digital converter of vibration signal through signal amplifier input computing machine, and the output of analog to digital converter inserts CPU (central processing unit) and carries out data processing, output, demonstration or printing.The utility model is according to the elastic modulus of the brick body principle relevant with its intensity itself, adopt hammering method, machinery knocks sample, it is vibrated, by sensing device this vibration signal is sent into computing machine again, computer run spectrum analysis program, calculate the natural frequency value in this vibration signal, the principle relevant with elastic modulus according to natural frequency, can calculate the elastic modulus of sample, analyze the rate of signal attenuation of sample simultaneously, again according to elastic modulus and attenuation rate analysis and calculate the intensity level of sample.
The utility model has the advantages that: 1, simple to operate, shortened test period greatly, every group of sample only needs a few minutes can obtain testing result.2, do not change the physical property of sample in the test process, reduced artificial error, improved measuring accuracy, guaranteed product quality.3, adopt Non-Destructive Testing, sample does not have breakage.
Fig. 1 is an each several part device annexation synoptic diagram of the present utility model.
Fig. 2 is the structural representation of elastic base and Palse vibration excitor.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 2.
Fig. 5 is sensor and live splint structural representation.
Fig. 6 is the circuit theory diagrams of driver.
Embodiment: referring to Fig. 1-6, the utility model is made up of elastic base 1, Palse vibration excitor 3, sensor 2, computing machine 5, driver 4 and charge amplifier 6.Elastic base 1 comprises base plate 12, cushion 11, backing plate 10 and pillar 9.Cushion 11 is the thick foam plastic cushion of 3-5cm, and backing plate 10 is the thick bakelite plate of 1mm, and pillar 9 is the thick vulcanie of 1-2cm, and the centre is processed with several apertures, its natural frequency f
0＜300Hz, pillar 9 and cushion 11 are bonded in the positive and negative two sides of backing plate 10 respectively, and the distance between two pillars 9 is 0.552 times of standard brick length.Palse vibration excitor 3 comprises coil 19, iron core 17, spring 16, shell 20, guide pin bushing 18 and impact bar 21, and impact bar 21 is fixed on iron core 17 terminations, and guide pin bushing 18 is fixed on the shell 20, with iron core 17 movingly.Palse vibration excitor 3 is fixed on elastic base 1 top center by the snap ring on the column 14 7, can move up and down, impact bar 21 straight down, and the gap between the sample is 1.5-2mm.Sensor 2 is a YD71C type acceleration transducer, is spun on the clamping plate of live splint 13, and the clamping plate inboard of live splint 13 is bonded with the thick flexible glue pad 15 of 2mm.Charge amplifier 6 models are DHF-6A, and computing machine 5 models are IBM-PC (comprising A/D, D/A card).Driver 4 comprises that model is the photoelectrical coupler 22 of 4N25, the triode 23 that model is 3DG4, and model is relay 24, bridge rectifier circuit and the transformer of C11.The voltage signal of being exported by the D/A card of computing machine 5 inserts photoelectrical coupler 22, the output of photoelectrical coupler 22 connects the input of triode 23, triode 23 drives relays 24, and the coil 19 of the Palse vibration excitor 3 that is driven by direct supply is connected on the normally opened contact J of relay 24
2And J
3On.During detection, on two pillars 9, it faces up greatly with specimen mounting, and the live splint 13 that is fixed with sensor 2 is clipped on two big faces of brick 8, and is clipped in the two-end-point and the middle part of brick 8 successively, and the triadic mean value is resistance to compression, the rupture strength value of brick, and five bricks are one group.
Claims (2)
1, a kind of fired brick intensity the cannot-harm-detection device, it is characterized in that comprising elastic base 1, Palse vibration excitor 3, sensor 2, computing machine 5, driver 4 and signal amplifier 6, described elastic base 1 comprises base plate 12, cushion 11, backing plate 10 and two pillars 9, anchor post 9 above the backing plate 10, two pillars 9 are positioned on two vibration nodal points of sample, backing plate 10 back sides are bonded with cushion 11, and cushion 11 can be placed on the base plate 12; Described Palse vibration excitor 3 comprises electromagnet and guide pin bushing 18 and the impact bar of being made up of coil 19, iron core 17 and shell 20 21, guide pin bushing 18 is between coil 19 and iron core 17, the motion of guiding iron core, impact bar 21 is fixed on iron core 17 terminations, Palse vibration excitor 3 is vertically fixed on elastic base 1 top, and its impact bar 21 is positioned in the middle of two pillars 9 of elastic base 1; Described sensor 2 is clamped on the sample by live splint 13, and the position that contacts with sample on the cleat plate face of live splint 13 is fixed with cushion 15, and sensor 2 is vertically fixed on the clamping plate of live splint 13; The potential pulse instruction of computing machine 5 outputs converts voltage signal enter drive 4 to through digital to analog converter, through amplifying the rear drive relay, make the coil 19 energising work of the Palse vibration excitor 3 that is connected with direct supply, sensor 2 is with the vibration signal input signal amplifier 6 that receives, the analog to digital converter of input computing machine 5 after amplifying, the output of analog to digital converter inserts CPU (central processing unit).
2, fired brick intensity the cannot-harm-detection device according to claim 1 is characterized in that the pillar 9 of described elastic base 1 is made by resilient material, is processed with aperture on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213642 CN2078875U (en) | 1990-07-31 | 1990-07-31 | Nondestructive detector of strength of sintered brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213642 CN2078875U (en) | 1990-07-31 | 1990-07-31 | Nondestructive detector of strength of sintered brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2078875U true CN2078875U (en) | 1991-06-12 |
Family
ID=4893095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90213642 Withdrawn CN2078875U (en) | 1990-07-31 | 1990-07-31 | Nondestructive detector of strength of sintered brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2078875U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100480671C (en) * | 2006-03-13 | 2009-04-22 | 浙江工业大学 | Time-varying program controlled pile foundation quality tester |
| CN100480669C (en) * | 2006-03-10 | 2009-04-22 | 浙江工业大学 | Basic structure dynamic measuring instrument capable of asynchronous collecting signal and synchronous correcting |
| CN101923027A (en) * | 2010-05-28 | 2010-12-22 | 清华大学 | System, equipment and method for detecting structural damages |
| CN101458200B (en) * | 2008-12-30 | 2011-05-11 | 江苏天一超细金属粉末有限公司 | Method for measuring carbonyl iron powder rigidity |
| CN101696958B (en) * | 2009-10-23 | 2011-09-21 | 中钢集团洛阳耐火材料研究院有限公司 | Method and device for supporting sample of pulse excitation method elasticity modulus tester |
| CN104155055A (en) * | 2014-09-02 | 2014-11-19 | 刘书雄 | Detection head for automobile dynamic balance detection device |
| CN104990979A (en) * | 2015-06-16 | 2015-10-21 | 南京工程学院 | Box body corrosion alarming system for photovoltaic junction box |
| CN106124344A (en) * | 2016-08-02 | 2016-11-16 | 昆明理工大学 | A kind of method of testing of fragility construction material Dynamic Elastic Module |
| CN113324855A (en) * | 2021-06-25 | 2021-08-31 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
-
1990
- 1990-07-31 CN CN 90213642 patent/CN2078875U/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100480669C (en) * | 2006-03-10 | 2009-04-22 | 浙江工业大学 | Basic structure dynamic measuring instrument capable of asynchronous collecting signal and synchronous correcting |
| CN100480671C (en) * | 2006-03-13 | 2009-04-22 | 浙江工业大学 | Time-varying program controlled pile foundation quality tester |
| CN101458200B (en) * | 2008-12-30 | 2011-05-11 | 江苏天一超细金属粉末有限公司 | Method for measuring carbonyl iron powder rigidity |
| CN101696958B (en) * | 2009-10-23 | 2011-09-21 | 中钢集团洛阳耐火材料研究院有限公司 | Method and device for supporting sample of pulse excitation method elasticity modulus tester |
| CN101923027A (en) * | 2010-05-28 | 2010-12-22 | 清华大学 | System, equipment and method for detecting structural damages |
| CN101923027B (en) * | 2010-05-28 | 2012-12-12 | 清华大学 | System, equipment and method for detecting structural damages |
| CN104155055A (en) * | 2014-09-02 | 2014-11-19 | 刘书雄 | Detection head for automobile dynamic balance detection device |
| CN104990979A (en) * | 2015-06-16 | 2015-10-21 | 南京工程学院 | Box body corrosion alarming system for photovoltaic junction box |
| CN104990979B (en) * | 2015-06-16 | 2017-12-08 | 南京工程学院 | A kind of photovoltaic conflux box body corrosion warning system |
| CN106124344A (en) * | 2016-08-02 | 2016-11-16 | 昆明理工大学 | A kind of method of testing of fragility construction material Dynamic Elastic Module |
| CN113324855A (en) * | 2021-06-25 | 2021-08-31 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
| CN113324855B (en) * | 2021-06-25 | 2022-07-22 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |