CN102998112B - Fastener fatigue test method - Google Patents
Fastener fatigue test method Download PDFInfo
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- CN102998112B CN102998112B CN201210534269.9A CN201210534269A CN102998112B CN 102998112 B CN102998112 B CN 102998112B CN 201210534269 A CN201210534269 A CN 201210534269A CN 102998112 B CN102998112 B CN 102998112B
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- transmission shaft
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Abstract
The invention discloses a fastener fatigue test device and a fastener fatigue test method. The fastener fatigue test device comprises a box body, a transmission shaft arranged on the box body, an electric motor and a fastener installing clamp. The transmission shaft is connected with an eccentric shaft, the eccentric shaft is connected with a vibration head, a bearing is installed in the vibration head, an eccentric adjusting screw is connected with the eccentric shaft, and a displacement sensor is fixed on the eccentric adjusting screw and connected with a digital display instrument. A signal generator is fixed on the transmission shaft, and a signal inductor corresponding to the signal generator is fixed on the box body and is connected with a counting display instrument. A base is fixed on the front side of the box body, a lower press block penetrates through a chute in the base, the upper end is contacted with the vibration head, and the lower end is contacted with the fastening-pressing face of a fastener installed on the fastener installing clamp. The fastener fatigue test device has the advantages of being compact in structure, convenient to use, various in purpose, capable of achieving computer data acquisition and long in service life.
Description
Technical field
The present invention relates to a kind of fastener fatigue experimental device and test method.
Background technology
The current test fatigue lifetime for fastener is delivered to professional testing laboratory and is used Special experimental passage to install special sectional fixture additional to carry out assembling testing fatigue after normally sampling, the whole test period is wasted in sample presentation, testing laboratory selects and fastener system is assembled.Manufacturer can not carry out testing in real time, efficiently for needing the fastener of inspection or test in time.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of fastener fatigue experimental device and test method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fastener fatigue experimental device, comprise casing and be arranged on transmission shaft, motor and the fastener sectional fixture on casing, described motor drives drive axis by belt pulley, transmission shaft is connected with excentric shaft, excentric shaft is connected with vibration head, and bearing is contained in vibration head, and eccentric adjusting screw rod is connected with excentric shaft, eccentric adjusting screw rod is fixed with displacement transducer, and displacement transducer is connected with digital display instrument; Transmission shaft is fixed with signal generator, casing is fixed with the signal inductor corresponding with signal generator, signal inductor is connected with counting display instrument; Be fixed with base in the front of casing, lower lock block is through the chute in base, and upper end contacts with vibration head, and lower end contacts with the face of withholding of the fastener be arranged on fastener sectional fixture.
Present invention also offers a kind of fastener fatigue test method, comprise the steps:
Step one, fastener to be tested is arranged on fastener sectional fixture;
Step 2, unlatching motor, drive drive axis by belt pulley;
Step 3, transmission shaft drive eccentric shaft turns, thus make vibration head produce upper and lower displacement;
Step 4, eccentric adjustment adjusting screw(rod), make excentric shaft in the rotary course of transmission shaft, produce different up and down displacements on vertical direction, thus make vibration head produce upper and lower displacement; Displacement transducer measures offset, and sends to digital display instrument to show offset, sends offset to computing machine by data acquisition unit simultaneously; In the rotary course of transmission shaft, the signal that signal inductor induced signal generator occurs, sends to counting display instrument by induction number of times, carries out counting and showing, thus measure the rotating cycle of transmission shaft, send rotating cycle to computing machine by data acquisition unit simultaneously;
Step 5, computing machine show in real time offset and rotating cycle and store.
Compared with prior art, good effect of the present invention is: compact conformation, easy to use, and purposes is various, can realize computerized data acquisition, long service life.Concrete manifestation is as follows:
1) kinematic train is utilized to realize the loading of contacting piece.
2) compact conformation, easy to use, digital display reading.
3) test figure can be realized by collocation computing machine to show timely and accurately and storage.
4) carry out lubrication and cooling by the bearing of the lubricating oil in fuel tank to transmission shaft and excentric shaft, decrease the wearing and tearing to machine, add the serviceable life of machine.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the side view of apparatus of the present invention;
Fig. 2 is the front view of apparatus of the present invention.
Embodiment
A kind of fastener fatigue experimental device, as depicted in figs. 1 and 2, comprise: casing 1, bearing 2, vibration head 3, excentric shaft 4, eccentric adjusting screw rod 5, displacement transducer 6, digital display instrument 7, right axle seat 8, transmission shaft 9, fuel tank 10, left bracket 11, upper belt pulley 12, bottom pulley 13, motor 14, signal generator 15, signal inductor 16, counting display instrument 17, base 18, lower lock block 19, fastener sectional fixture 20, oil pipe 21, data acquisition unit 22, computing machine 23 etc., wherein:
Casing 1 is formed by Plate Welding, forms three cavitys and a pressure-bearing platform: upper strata cavity is fuel tank 10; Middle level cavity is by right axle seat 8 and left bracket 11 fixed conveyor axle 9; Motor 14 is fixed on lower floor's cavity and provides the power needed for this test unit; Pressure-bearing platform is placed fastener sectional fixture 20, for fastener for installing.Upper belt pulley 12 is fixed on transmission shaft 9, and bottom pulley 13 is fixed on motor 14.Transmission shaft 9 is connected with excentric shaft 4, and excentric shaft 4 is connected with vibration head 3, and bearing 2 is contained in vibration head 3 li, supports excentric shaft 4 and guides it to rotate.Eccentric adjusting screw rod 5 and excentric shaft 4 are threaded connection, and displacement transducer 6 is fixed on eccentric adjusting screw rod 5.Digital display instrument 7 is fixed on casing front, is connected and is responsible for data to export with displacement transducer 6.Signal generator 15 is fixed on transmission shaft 9, in transmission shaft 9 rotary course, send signal; Have the signal inductor 16 corresponding with signal generator 15 at the middle level cavity internal fixtion of casing 1, signal inductor 16 is connected with counting display instrument 17.Digital display instrument 7 is connected with data acquisition unit 22 with counting display instrument 17, and data acquisition unit 22 is connected with computing machine 23.Base 18 is fixed on the front of casing 1; Lower lock block 19 is through the chute of base 18 li, and upper end contacts with vibration head 3, and lower end contacts with the face of withholding of the fastener be arranged on fastener sectional fixture 20.Fuel tank 10 and between right axle seat 8 and left bracket 11, and be all connected with oil pipe 21 between right axle seat 8 with vibration head 3, lubricating oil is inside flowed, reaches the effect of lubrication and cooling.
Present invention also offers a kind of fastener fatigue test method, comprise the steps:
Step one, fastener to be tested is arranged on fastener sectional fixture 20;
Step 2, unlatching motor 14, drive transmission shaft 9 to rotate by upper and lower belt pulley 12 and 13;
Step 3, transmission shaft 9 drive excentric shaft 4 to rotate, thus make vibration head 3 produce upper and lower displacement;
Step 4, eccentric adjustment adjusting screw(rod) 5, make excentric shaft 4 in the rotary course of transmission shaft 9, produce different up and down displacements on vertical direction, thus make vibration head 3 produce upper and lower displacement, simultaneous displacement sensor 6 measures offset, and sent to by offset digital display instrument 7 to show, send offset to computing machine 23 by data acquisition unit 22 simultaneously; In the rotary course of transmission shaft 9, the signal that signal inductor 16 induced signal generator 15 occurs, and induction number of times is sent to counting display instrument 17 on carry out counting and showing, thus measure the rotating cycle of transmission shaft 9, send rotating cycle to computing machine 23 by data acquisition unit 22 simultaneously;
In the process that transmission shaft 9 rotates, the lubricating oil that fuel tank is 10 li enters left and right axle bed 11 and 8 by oil pipe, carries out lubrication and cooling to transmission shaft 9;
In the process that transmission shaft 9 rotates, the lubricating oil that fuel tank is 10 li, by right axle seat 8 and vibration head 3, carries out lubrication and cooling to bearing 2;
Step 5, computing machine 23 pairs of experimental datas (offset and rotating cycle) show in real time and store.
Claims (3)
1. a fastener fatigue test method, the fastener fatigue experimental device adopted comprises casing and is arranged on transmission shaft, motor and the fastener sectional fixture on casing, motor drives drive axis by belt pulley, transmission shaft is connected with excentric shaft, excentric shaft is connected with vibration head, and bearing is contained in vibration head, and eccentric adjusting screw rod is connected with excentric shaft, eccentric adjusting screw rod is fixed with displacement transducer, and displacement transducer is connected with digital display instrument; Transmission shaft is fixed with signal generator, casing is fixed with the signal inductor corresponding with signal generator, signal inductor is connected with counting display instrument; Be fixed with base in the front of casing, lower lock block is through the chute in base, and upper end contacts with vibration head, and lower end contacts with the face of withholding of the fastener be arranged on fastener sectional fixture; It is characterized in that: comprise the steps:
Step one, fastener to be tested is arranged on fastener sectional fixture;
Step 2, unlatching motor, drive drive axis by belt pulley;
Step 3, transmission shaft drive eccentric shaft turns, thus make vibration head produce upper and lower displacement;
Step 4, eccentric adjustment adjusting screw(rod), make excentric shaft in the rotary course of transmission shaft, produce different up and down displacements on vertical direction, thus make vibration head produce upper and lower displacement; Displacement transducer measures offset, and sends to digital display instrument to show offset, sends offset to computing machine by data acquisition unit simultaneously; In the rotary course of transmission shaft, the signal that signal inductor induced signal generator occurs, sends to counting display instrument by induction number of times, carries out counting and showing, thus measure the rotating cycle of transmission shaft, send rotating cycle to computing machine by data acquisition unit simultaneously;
Step 5, computing machine show in real time offset and rotating cycle and store.
2. fastener fatigue test method according to claim 1, it is characterized in that: on casing, be provided with fuel tank, transmission shaft is fixed on casing by left and right axle bed, described fuel tank is connected with left and right axle bed respectively by oil pipe, in the process of drive axis, lubricating oil in fuel tank enters left and right axle bed by oil pipe, carries out lubrication and cooling to transmission shaft.
3. fastener fatigue test method according to claim 2, is characterized in that: right axle seat is connected with vibration head by oil pipe, and in the process of drive axis, the lubricating oil in fuel tank, by right axle seat and vibration head, carries out lubrication and cooling to bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534269.9A CN102998112B (en) | 2012-12-12 | 2012-12-12 | Fastener fatigue test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534269.9A CN102998112B (en) | 2012-12-12 | 2012-12-12 | Fastener fatigue test method |
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| CN102998112A CN102998112A (en) | 2013-03-27 |
| CN102998112B true CN102998112B (en) | 2015-01-21 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278405A (en) * | 2013-06-04 | 2013-09-04 | 苏州大学 | Fatigue test system |
| CN104697774B (en) * | 2015-03-16 | 2017-06-20 | 公安部第三研究所 | A kind of fastener endurance tester and method of testing |
| CN106768944B (en) * | 2016-12-19 | 2023-04-18 | 中铁隆昌铁路器材有限公司 | Adjustable steel rail buckle fitting fatigue test stress application device and method |
| CN107643223A (en) * | 2017-10-30 | 2018-01-30 | 连云港中复连众复合材料集团有限公司 | A kind of experimental rig and test method for wind electricity blade pre-embedded bolt set testing fatigue |
| CN108593233B (en) * | 2018-04-18 | 2020-09-04 | 西南交通大学 | Fatigue strength measuring equipment and system |
| CN109406131A (en) * | 2018-12-16 | 2019-03-01 | 安徽省巢湖铸造厂有限责任公司 | Rail clip fatigue experimental device |
| CN112903268A (en) * | 2021-01-20 | 2021-06-04 | 温州大学 | Detection apparatus for case and bag fastener |
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| EP0443514A2 (en) * | 1990-02-20 | 1991-08-28 | Nikkiso Co., Ltd. | Apparatus for monitoring a bearing |
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| CN101718663A (en) * | 2009-12-15 | 2010-06-02 | 中国农业大学 | Dynamic stiffness testing experimental system of eccentrical wheel type vehicular rubber part |
| CN102252921A (en) * | 2011-05-04 | 2011-11-23 | 上海汽车齿轮三厂 | Axial load fatigue testing device and testing method thereof |
| CN202947872U (en) * | 2012-12-12 | 2013-05-22 | 中铁隆昌铁路器材有限公司 | Apparatus for testing fatigue degree of fastener |
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2012
- 2012-12-12 CN CN201210534269.9A patent/CN102998112B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443514A2 (en) * | 1990-02-20 | 1991-08-28 | Nikkiso Co., Ltd. | Apparatus for monitoring a bearing |
| CN2683315Y (en) * | 2003-06-04 | 2005-03-09 | 李清 | Thickness controlled ball type high-speed refiner polishing machine |
| CN2718556Y (en) * | 2004-01-14 | 2005-08-17 | 株洲联诚集团有限责任公司减振器分公司 | Fatigue life and performance test table for gearbox free variable frequency vibration reducer |
| CN2784904Y (en) * | 2004-12-14 | 2006-05-31 | 尚廷东 | Machine for testing mechanical property of steel pipe scaffold fastener |
| CN201242686Y (en) * | 2008-08-19 | 2009-05-20 | 陈应天 | Control device capable of improving drive accuracy and reliability of common DC electric machine |
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| CN102998112A (en) | 2013-03-27 |
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