CN103632591B - Comprehensive tester for mechanical vibration of single-DOF system - Google Patents
Comprehensive tester for mechanical vibration of single-DOF system Download PDFInfo
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- CN103632591B CN103632591B CN201310642210.6A CN201310642210A CN103632591B CN 103632591 B CN103632591 B CN 103632591B CN 201310642210 A CN201310642210 A CN 201310642210A CN 103632591 B CN103632591 B CN 103632591B
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Abstract
The invention relates to a comprehensive tester for mechanical vibration of a single-DOF system and particularly provides a mechanical vibration tester for university physics and physical vibration courses in science and technology universities. The tester comprises a support panel component, a paper feed mechanism and an excitation mechanism. Both the paper feed mechanism and the excitation mechanism are mounted on the support panel component. The paper feed mechanism is driven by a step motor, and a driving roller and a driven roller drive a paper tape which passes a roll positioning area at a certain speed. A grooved wheel is mounted on an output shaft of an excitation motor in the excitation mechanism and provided with a pull pin. The pull pin is nested in a wheel groove of a forced vibrating plate which is mounted on a linear guide and which excites a vibrator to vibrate. Under coaction of the paper feed mechanism and the excitation mechanism, teaching demonstrations for vibrations such as simple harmonic vibration, forced vibration and free vibration and drawing of experimental waveforms are achieved.
Description
Technical field
The present invention relates to mechanical vibration test and experimental demonstration technology, specially a kind of single-mode system mechanical vibration are comprehensive
Close experiment instrument.
Background technology
In resonable College Physics in Engineer Colleges and mechanical vibration course, single-mode system vibration is that basis and emphasis are imparted knowledge to students
Content.A large amount of many-degrees of freedom system and nonlinear system vibration problem present in real engineering can be converted to single-degree-of-freedom
Solve.Understand and grasp concept, curve, parameter and the conclusion of single-mode system vibration, for the further study in the field
Improve particularly important.
Domestic mechanical vibration at present are with vibration control experiment using vibrator, acceleration transducer and signal adapter etc.
Completed by virtual instrument and computer simulation, the single-mode system difference in the experimental provision type and teaching material is larger.
In single-mode system vibration, Jing often to be demonstrated the vibration processes and vibration song that object makees simple harmonic oscillation and other machinery vibration
Line, needs more intuitive understanding vibration parameters for the impact of oscillating curve.Accordingly, it would be desirable to one kind is simple and convenient, be easy to behaviour
Make, and single-degree-of-freedom theory gap it is less, the device of various single-mode system vibration experiments can be completed.
The content of the invention
In place of the deficiencies in the prior art, the technical problem that the present invention is intended to solve is to provide a kind of single-mode system
Mechanical vibration comprehensive test instrument.The experiment instrument is capable of achieving the demonstration of the vibrations such as simple harmonic oscillation, forced vibration, free vibration and waveform
Drafting.
The present invention solves the scheme of the comprehensive tester for mechanical vibration of single-DOF system technical problem：Design is a kind of
Comprehensive tester for mechanical vibration of single-DOF system, it includes supported panel assembly, paper advance mechanism and exciting agency, and described send
Mechanism of paper and exciting agency are installed on support panel.
Described supported panel assembly includes support panel and lower margin, and four lower margins are arranged on the lower surface of support panel
On；
Described paper advance mechanism includes motor, and motor is arranged on motor support, motor support
It is screwed in the upper surface of support panel；Stepper motor output shaft installs shaft coupling, reaches power by shaft coupling
Active roller, active roller two are installed clutch shaft bearing and are fixed on active roller bearing block, and bearing block is arranged on supporting surface
On plate upper surface；Return idler is installed in the surface of active roller, and return idler two is installed second bearing and is fixed on pressure
In adjustment block, pressure adjustment block is arranged in the sliding groove on active roller bearing block, the upper surface peace of active roller bearing block
Whole screw panel is debug, mounting and adjusting screw realizes the adjustment of roller pressure on adjusting screw panel；Paper web installing plate passes through spiral shell
Nail is fastened on support panel, and paper web installation axle is bolted and is fixed on paper web installing plate, in paper web installation axle
Spacer is cased with, paper web is then enclosed within spacer and is convenient for changing, the both sides of paper web are cased with paper web baffle plate, paper web gear by paper web installation axle
The side of plate is fixed in paper web installation axle by holding screw by paper web mounting sleeve limited location block, limited block；Pressure roller two
Head is installed 3rd bearing and is fixed in pressure adjustment block, and pressure adjustment block is arranged in the sliding groove in pressure roller shaft bearing, pressure
The upper surface mounting and adjusting screw panel of roll bearing seat, on adjusting screw panel, mounting and adjusting screw realizes the tune of platen pressure
It is whole；The underface mounting bracket paper panel of pressure roller, tray paper panel are connected by screw the upper surface for being fixed on support panel.
Described exciting agency includes shock electric machine, and shock electric machine is arranged on shock electric machine support, shock electric machine support
It is connected by screw and is fixed on support panel upper surface, sheave is installed on the output shaft of shock electric machine, finger is installed on sheave,
Finger is inserted in the sheave groove of forced vibration plate, and forced vibration plate is arranged on line slideway, and line slideway is led installed in straight line
In rail gripper shoe, line slideway gripper shoe is connected by screw and is fixed on the upper surface of support panel；The spring damping shakes
Subsystem includes：Oscillating curve is drawn pen and is arranged on oscillating mass block, and the surface of oscillating mass block is installed the first spring and connected
Block is connect, linear bearing is installed on oscillating mass block, linear bearing is enclosed within quenching optical axis, and quenching optical axis two ends are installed optical axis and supported
Plate, is provided with second spring contiguous block directly over optical axis gripper shoe, optical axis gripper shoe is connected by screw and is fixed on supporting surface
On plate；Damping sheet is connected by screw on damping cylinder, and damping cylinder lower surface installs cylinder cushion block, and cylinder cushion block leads to
Cross mode connects for screw to be fixed on support panel.
Compared with prior art, a kind of comprehensive tester for mechanical vibration of single-DOF system of the invention has the characteristics that：
1. experiment effect is good.It is of the invention to be specifically capable of achieving simple harmonic oscillation, have receiving under free decaying vibration, harmonic excitation power
The synthesis of the single-mode system vibrations such as the forced vibration under urgent vibration, periodical exciting force, the forced vibration under any exciting force
Demonstration and the drafting of waveform.
2. human oriented design.A kind of comprehensive tester for mechanical vibration of single-DOF system of the present invention adopts human oriented design,
It is easy to operate easy to use, oscillator quality, the spring for changing different-stiffness can be changed and by increasing and decreasing gas by increase and decrease mode
Cylinder pressure is changing damping.
3. directly perceived and good economy performance.Apparatus of the present invention adopt single-mode system Theory of Vibration phase using mechanical vibration structure
Corresponding spring-damper-quality system, readily appreciates and grasps experiment content.Device using paper tape realize vibration collection and
Show, tracing analysiss and parameter processing are carried out on paper tape.
Description of the drawings
Fig. 1 is a kind of complete machine structure schematic diagram of embodiment of comprehensive tester for mechanical vibration of single-DOF system of the present invention.
Specific embodiment
The present invention is further discussed below in detail with reference to embodiment and its accompanying drawing.
The present invention design comprehensive tester for mechanical vibration of single-DOF system (referring to Fig. 1) including supported panel assembly 1,
Paper advance mechanism 2, exciting agency 3.
Described supported panel assembly 1 includes support panel 1.2 and lower margin 1.1, and four lower margins 1.1 are arranged on support panel
On 1.2 lower surface；
Described paper advance mechanism 2 includes motor 2.21, and motor 2.21 is arranged on motor support 2.22,
Motor support 2.22 is screwed in the upper surface of support panel 1.2；2.21 output shaft of motor installs shaft coupling
Power is reached active roller 2.17 by shaft coupling 2.20 by device 2.20, and clutch shaft bearing 2.19 is installed at 2.17 two of active roller
And be fixed on active roller bearing block 2.11, bearing block 2.11 is arranged on 1.2 upper surface of support panel；Active roller 2.17
Surface return idler 2.16 is installed, 2.16 two of return idler is installed second bearing 2.18 and is simultaneously fixed on pressure adjustment block
On 2.15, pressure adjustment block 2.15 is arranged in the sliding groove on active roller bearing block 2.11, active roller bearing block 2.11
Upper surface mounting and adjusting screw panel 2.14, on adjusting screw panel 2.14, mounting and adjusting screw realizes the tune of roller pressure
It is whole；Paper web installing plate 2.12 is connected by screw and is fixed on support panel 1.2, and paper web installation axle 2.2 is bolted solid
It is scheduled on paper web installing plate 2.12, in paper web installation axle 2.2, is cased with spacer 2.3, paper web is then enclosed within spacer 2.3 and is convenient for changing,
The both sides of paper web are cased with paper web baffle plate (2.5,2.1) by paper web installation axle 2.2, and paper web baffle plate passes through beside (2.5,2.1)
Paper web installation axle 2.2 is cased with limited block 2.4, and limited block 2.4 is fixed in paper web installation axle 2.2 by holding screw；Pressure roller
2.25 two are installed 3rd bearing 2.24 and are fixed in pressure adjustment block 2.23, and pressure adjustment block 2.23 is arranged on roller bearing
In sliding groove on seat 2.6, the upper surface mounting and adjusting screw panel 2.26 of pressure roller shaft bearing 2.6, adjusting screw panel 2.26
Upper mounting and adjusting screw realizes the adjustment of platen pressure；The underface mounting bracket paper panel 2.13 of pressure roller 2.25, tray paper panel
2.13 are connected by screw the upper surface for being fixed on support panel 1.2；
Described exciting agency 3 includes shock electric machine 3.10, and shock electric machine 3.10 is arranged on shock electric machine support 3.11,
Shock electric machine support 3.11 is connected by screw and is fixed on 1.2 upper surface of support panel, on the output shaft of shock electric machine 3.10
Sheave 3.9 is installed, finger 3.8 is installed on sheave, finger 3.8 is inserted in the sheave groove of forced vibration plate 3.2, forced vibration plate
3.2 are arranged on line slideway 3.3, and line slideway 3.3 is arranged in line slideway gripper shoe 3.1, line slideway gripper shoe 3.1
It is connected by screw and is fixed on the upper surface of support panel 1.2；The spring damping oscillator system includes：Oscillating curve is drawn
Pen 3.7 is arranged on oscillating mass block 3.6, and the first spring contiguous block 3.5 is installed in the surface of oscillating mass block 3.6, vibrates matter
Linear bearing 3.18 is installed on gauge block 3.6, linear bearing 3.18 is enclosed within quenching optical axis 3.17, and 3.17 two ends of quenching optical axis are installed
Optical axis gripper shoe 3.16, the surface of optical axis gripper shoe 3.16 are provided with second spring contiguous block 3.15, optical axis gripper shoe 3.16
It is connected by screw and is fixed on support panel 1.2；Damping sheet 3.12 is connected by screw on damping cylinder 3.13, resistance
3.13 lower surface of Buddhist nun's cylinder installs cylinder cushion block 3.14, and cylinder cushion block 3.14 is connected by screw and is fixed on support panel 1.2.
The mentality of designing of comprehensive tester for mechanical vibration of single-DOF system of the present invention is as follows：The design intends realizing that simple harmonic quantity shakes
The comprehensive demonstration of the vibrations such as dynamic, forced vibration, free vibration and the drafting of waveform, realize paper as power using motor
Transmission, designs a set of exciting agency in addition and realizes simple harmonic oscillation, forced vibration and free vibration.
Single-mode system oscillatory differential equation is：
In formula：M is oscillator quality；C is damped for vibrational system；K is spring rate；
F (t) is input into for vibrational system, i.e. exciting force；
When F (t) is equal to 0, system is automatic vibration；
When F (t) is not equal to 0, system is forced vibration.
X (t) the as time-domain response curves that the differential equation is obtained are solved, vibration period T can be obtained by analyzing curve.
The natural frequency determined by system |input parameteWith the natural frequency obtained by response curve
Contrasted, verified the concordance of single-degree of freedom vibration theoretical and experimental results.
The primary object of comprehensive tester for mechanical vibration of single-DOF system of the present invention is：System adopts electromechanical integration
Design technology project, realize the drafting of the comprehensive demonstration and waveform of the vibrations such as simple harmonic oscillation, forced vibration, free vibration.
The operation principle of comprehensive tester for mechanical vibration of single-DOF system of the present invention is：Single-mode system mechanical vibration
The course of work of comprehensive test instrument is, by the single chip computer device of control system, controls motor, and motor passes through roller band
Dynamic paper travels forward, and is excited at the same time mechanism incitation oscillating mass block and does various forced vibrations, free vibration.
The present invention does not address part and is applied to prior art.
Claims (1)
1. a kind of single-mode system mechanical vibration synthesis in resonable College Physics in Engineer Colleges and mechanical vibration course
Experiment instrument, the experiment instrument include supported panel assembly, spring damping oscillator system, paper advance mechanism and exciting agency, its feature
It is that supported panel assembly is horizontally mounted placement, paper advance mechanism traffic direction and spring damping oscillator system direction of vibration space are hung down
Directly；The paper advance mechanism and exciting agency are arranged on supported panel assembly horizontal surface, and described paper advance mechanism includes stepping
Motor, motor are arranged on motor support, and motor support is screwed in the upper surface of support panel；
Stepper motor output shaft installs shaft coupling, and power is reached active roller by shaft coupling, and first axle is installed at active roller two
Hold and be fixed on active roller bearing block, bearing block is arranged on support panel upper surface；Install the surface of active roller
Return idler, return idler two are installed second bearing and are fixed in pressure adjustment block, and pressure adjustment block is arranged on actively rolls
In sliding groove on wheel bearing seat, the upper surface mounting and adjusting screw panel of active roller bearing block is pacified on adjusting screw panel
Dress adjusting screw realizes the adjustment of roller pressure；Paper web installing plate is connected by screw and is fixed on support panel, and paper web is installed
Axle is bolted and is fixed on paper web installing plate, and spacer is cased with paper web installation axle, and paper web is then enclosed within spacer conveniently more
Change, the both sides of paper web are cased with paper web baffle plate by paper web installation axle, and the side of paper web baffle plate passes through paper web mounting sleeve limited location
Block, limited block are fixed in paper web installation axle by holding screw；3rd bearing is installed and pressure adjustment is fixed in pressure roller two
On block, pressure adjustment block is arranged in the sliding groove in pressure roller shaft bearing, the upper surface mounting and adjusting screw face of pressure roller shaft bearing
Plate, on adjusting screw panel, mounting and adjusting screw realizes the adjustment of platen pressure；The underface mounting bracket paper panel of pressure roller, tray paper
Panel is connected by screw the upper surface for being fixed on support panel；The exciting agency includes shock electric machine, sheave, finger, receives
Urgent oscillating plate, the forced vibration plate are that rectangular channel is machined with the middle of rectangle structure, and the shock electric machine is arranged on exciting electricity
On machine support, shock electric machine support is connected by screw and is fixed on support panel surface, installs on the output shaft of shock electric machine
Sheave, installs finger on sheave, finger is inserted in the rectangular channel of forced vibration plate；The shock electric machine is installed in shock electric machine
On frame, shock electric machine support is connected by screw and is fixed on support panel upper surface, mounting groove on the output shaft of shock electric machine
Wheel, installs finger on sheave, finger is inserted in the sheave groove of forced vibration plate, and forced vibration plate is arranged on line slideway, directly
In line slideway gripper shoe, line slideway gripper shoe is connected by screw the upper surface for being fixed on support panel to line guide rails assembling
On；The spring damping oscillator system includes：Oscillating curve is drawn pen and is arranged on oscillating mass block, and oscillating mass block is just gone up
The first spring contiguous block is installed by side, and linear bearing is installed on oscillating mass block, and linear bearing is enclosed within quenching optical axis, and quench optical axis
Optical axis gripper shoe is installed at two ends, and second spring contiguous block is provided with directly over optical axis gripper shoe, and optical axis gripper shoe passes through screw
It is fastened on support panel；Damping sheet is connected by screw on damping cylinder, and damping cylinder lower surface installs gas
Cylinder cushion block, cylinder cushion block are connected by screw and are fixed on support panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642210.6A CN103632591B (en) | 2013-11-29 | 2013-11-29 | Comprehensive tester for mechanical vibration of single-DOF system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310642210.6A CN103632591B (en) | 2013-11-29 | 2013-11-29 | Comprehensive tester for mechanical vibration of single-DOF system |
Publications (2)
| Publication Number | Publication Date |
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| CN103632591A CN103632591A (en) | 2014-03-12 |
| CN103632591B true CN103632591B (en) | 2017-05-03 |
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| CN201310642210.6A Expired - Fee Related CN103632591B (en) | 2013-11-29 | 2013-11-29 | Comprehensive tester for mechanical vibration of single-DOF system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198166A (en) * | 2014-07-16 | 2014-12-10 | 广东工业大学 | Characteristic test device for ultrasonic vibrator of sandwich piezoelectric transducer |
| CN105258891A (en) * | 2015-10-28 | 2016-01-20 | 南京航空航天大学 | Single-degree-of-freedom vibration test device |
| CN113012511A (en) * | 2021-02-24 | 2021-06-22 | 江苏盛泽医院 | Single-degree-of-freedom system mechanical vibration comprehensive experiment instrument |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU399906A1 (en) * | 1971-06-15 | 1973-10-03 | Новосибирский электротехнический институт , Новосибирский институт советской кооперативной торговли | DEVICE FOR DEMONSTRATION OF VIBRATIONAL PROCESSES OF SYSTEMS |
| SU982070A1 (en) * | 1981-06-04 | 1982-12-15 | Всесоюзное Специализированное Научно-Производственное Объединение "Союзвузприбор" | Device for demonstrating oscillations |
| CN1182497C (en) * | 2003-08-29 | 2004-12-29 | 清华大学 | Forced vibration demonstration experiment instrument |
| CN2735476Y (en) * | 2004-09-21 | 2005-10-19 | 苏长武 | Experiment instrument for simple harmonic vibration of spring vibrator |
| CN202230648U (en) * | 2011-10-07 | 2012-05-23 | 李爽 | Damping vibration curve recorder in different mediums |
| CN102456285B (en) * | 2011-11-17 | 2013-12-11 | 浙江向阳花教学器材有限公司 | Oscillation image drawing apparatus for spring oscillator |
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Granted publication date: 20170503 Termination date: 20201129 |