CN102125910A - Amplitude and energy adjustable mechanical random vibration exciting device - Google Patents
Amplitude and energy adjustable mechanical random vibration exciting device Download PDFInfo
- Publication number
- CN102125910A CN102125910A CN 201010575884 CN201010575884A CN102125910A CN 102125910 A CN102125910 A CN 102125910A CN 201010575884 CN201010575884 CN 201010575884 CN 201010575884 A CN201010575884 A CN 201010575884A CN 102125910 A CN102125910 A CN 102125910A
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- connecting rod
- workbench
- slide block
- random vibration
- exciting device
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Abstract
The invention discloses an amplitude and energy adjustable mechanical random vibration exciting device, which mainly comprises a fixed support, a driving crank, a small connecting rod, a multi-contact connecting rod, an upper connecting rod, a sliding block, a guide post, a spring, a workbench, a sliding sleeve, a rocker arm, a movable support, a base and the like. The device has redundant degree of freedom, the motor drives the driving crank to rotate uniformly, and the uniform rotation is converted into reciprocating motion of the workbench by a multiple connecting rod-sliding block mechanism. By adjusting the position of the movable support, selecting springs of different rigidities and adjusting the revolution speed of the driving crank, step adjustable vibration amplitude and energy of multiple gears can be set. The reciprocating motion of the workbench is ensured by a guide post-guide sleeve assembly positioned between the sliding block and the workbench, the springs are sleeved outside the guide post-guide sleeve assembly to buffer the shock of the whole system, and meanwhile, the random vibration frequency band of the workbench is expanded.
Description
Technical field
The present invention relates to a kind of generation can random vibration and amplitude and the adjustable mechanical type exciting device of energy, produces the mechanical environment experiment condition of random vibration when being mainly used in the electronic product test.
Background technology
When electronic product is carried out Performance Detection, usually need implement random vibration test according to relevant criterion.With regard to the difference of exciting source, mechanical type, electrodynamic type, electric-liquid type three class exciting devices are arranged.Although the mechanical type exciting device compare other two classes exciting devices have cheap, can not have foundation special, safeguard to use simple advantage, the drawbacks limit that its vibrational waveform is simple, Oscillation Amplitude is fixing the scope of application of mechanical type exciting device.For example common mechanical type simple harmonic oscillation exciting device can only produce the simple harmonic oscillation waveform at present, implements the requirement of random vibration test in the time of can not satisfying the electronic product Performance Detection.For this reason, the present invention proposes a kind of mechanical type exciting device with redundant degree of freedom, can produce random vibration, and amplitude and energy can be regulated.
Summary of the invention
Technical problem: the shortcoming simple at present mechanical type simple harmonic oscillation exciting device vibrational waveform, that Oscillation Amplitude is fixing, the adjustable mechanical type random vibration of a kind of amplitude and energy exciting device is proposed, this is a kind of many connecting rod-slide block mechanisms, have redundant degree of freedom, can realize the workbench random vibration.By position, the spring of selecting different-stiffness for use of regulating movable bearing support, the rotating speed of regulating the driving crank, can change the amplitude and the energy of random vibration.
Technical scheme: 1. adopt many connecting rod-slide block mechanisms,, can be transformed to the workbench random vibration through too much connecting rod-slide block mechanism with driving the crank uniform rotation because its redundant degree of freedom character that has can produce random motion.2. design bearing travel mechanism, realization workbench random vibration amplitude can be regulated.3. between slide block and workbench, move back and forth,, expand the frequency band of workbench random vibration simultaneously in of the impact of guide pillar-guide pin bushing combination outer cover shock mount with the buffering whole system by guide pillar-guide pin bushing combination safeguard work platform.Mechanical type random vibration exciting device element is followed successively by: driving crank-small rod-multiple-contact connecting rod-go up connecting rod-slide block-guide pillar-guide pin bushing-spring-workbench, its course of work is: motor-driven crank uniform rotation → linkage plane motion → slide block reciprocating motion → guide pillar guide pin bushing → workbench moves back and forth.
Beneficial effect: the deficiency of by the adjustable many connecting rod-slide block mechanisms of amplitude, improve that mechanical type harmonic excitation device vibrational waveform is simple, Oscillation Amplitude is fixing, make the mechanical type exciting device produce random vibration, and amplitude and energy all can be regulated.The present invention is as if being benchmark with middle gear, and amplitude and energy amount of decrease can reach 38.1% and 42.1% respectively when low-grade location, and amplitude and energy amplification can reach 63.7% and 45.4% respectively when high tap position.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Have among Fig. 1: hold-down support (1) drives crank (2), bearing pin (3), small rod (4), bearing pin (5), multiple-contact connecting rod (6), bearing pin (7), last connecting rod (8), bearing pin (9), slide block (10), spring (11), workbench (12), guide pin bushing (13), guide pillar (14), support (15), sliding sleeve (16), rocking arm (17), movable bearing support (18).
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, the present technique practical application is not limited to present embodiment.
With reference to Fig. 1, coaxial being connected and installed of drive shaft end of motor and driving crank (2) drives crank (2) and does uniform rotation, through the too much conduction of connecting rod-slide block mechanism, locates to realize random vibration at workbench (12).
With reference to Fig. 1, multiple-contact connecting rod (6) one ends are connected to small rod (4) by bearing pin (5), the other end passes sliding sleeve (16) and can slide in sliding sleeve, one end of the mid portion of multiple-contact connecting rod (6) and last connecting rod (8) is hinged by bearing pin (7), last connecting rod (8) other end is connected with slide block (10) by bearing pin (9), slide block (10) is contained in the track on the support (15) and can slides along track, by bolt four guide pillars (14) are housed at slide block (10) upper surface, correspondingly with it by bolt four guide pin bushings (13) are housed at workbench (12) lower surface, form guide pillar-guide pin bushing combination, at guide pillar-guide pin bushing combination outer cover shock mount (11).Under the effect of motor, drive rotatablely moving of crank (2) and pass to multiple-contact connecting rod (6) by small rod (4), multiple-contact connecting rod (6) is done plane motion, connecting rod in the drive (8) motion, thereby slide block (10) is vibrated along the track of support (15), guide pillar between slide block (10) and the workbench (12)-guide pin bushing combination safeguard work platform (12) moves back and forth, guide pillar-outside spring (11) of guide pin bushing combination has cushioned the impact between the parts, has expanded the frequency band of workbench (12) random vibration simultaneously.
With reference to Fig. 1, movable bearing support (18) is fixed on the support (15), and different movable bearing support installation sites is set on support.By position, the spring (11) of selecting different-stiffness for use of regulating movable bearing support (18), the rotating speed of regulating driving crank (2), a plurality of gears can be set has level to adjust a vibration amplitude and an energy, can realize that just the level that has of amplitude and energy can be regulated.
Claims (5)
1. amplitude and the adjustable mechanical type random vibration of energy exciting device is characterized in that: exciting device mainly by hold-down support (1), drive crank (2), small rod (4), multiple-contact connecting rod (6), the bearing pin etc. of going up connecting rod (8), slide block (10), spring (11), workbench (12), guide pin bushing (13), guide pillar (14), support (15) sliding sleeve (16), rocking arm (17), movable bearing support (18) and each connecting rod connecting portion forms; Hold-down support (1) adopts and is bolted on the support (15), driving crank (2) adopts bearing pin (3) to be connected with small rod (4), multinode connecting rod (6) one ends adopt bearing pin (5) to be connected with small rod (4), the other end is contained in the sliding sleeve (16), the mid portion contact is connected with last connecting rod (8) by bearing pin (7), and the other end of last connecting rod (8) is connected by bearing pin (9) with slide block (10); Slide block (10) is positioned at the vertical track on the support (15), and the upper surface of slide block (10) and workbench (12) lower surface are equipped with guide pillar (14) and guide pin bushing (13), guide pin bushing (13) outer cover shock mount (11) respectively.
2. a kind of amplitude according to claim 1 and the adjustable mechanical type random vibration of energy exciting device, it is characterized in that: driven by motor drives crank (2) uniform rotation, be transformed to workbench (12) through too much connecting rod-slide block mechanism and move back and forth, whole system has redundant degree of freedom.
3. a kind of amplitude according to claim 1 and the adjustable mechanical type random vibration of energy exciting device is characterized in that: the position-adjustable of movable bearing support (18).
4. a kind of amplitude according to claim 1 and the adjustable mechanical type random vibration of energy exciting device, it is characterized in that: four guide pillars (14) are contained in the upper surface of slide block (10) by bolt, by bolt fourth officer guide pin bushing (13) are installed at workbench (12) lower surface and are matched with it.
5. a kind of amplitude according to claim 1 and the adjustable mechanical type random vibration of energy exciting device, it is characterized in that: four guide pillars between slide block (10) and workbench (12)-guide pin bushing combination outer surface four springs of suit (11), each spring has identical parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010575884 CN102125910B (en) | 2010-12-07 | 2010-12-07 | Amplitude and energy adjustable mechanical random vibration exciting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010575884 CN102125910B (en) | 2010-12-07 | 2010-12-07 | Amplitude and energy adjustable mechanical random vibration exciting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102125910A true CN102125910A (en) | 2011-07-20 |
| CN102125910B CN102125910B (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010575884 Expired - Fee Related CN102125910B (en) | 2010-12-07 | 2010-12-07 | Amplitude and energy adjustable mechanical random vibration exciting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102125910B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445353A (en) * | 2011-10-10 | 2012-05-09 | 江苏科技大学 | Mechanical simple harmonic excitation device |
| CN104819814A (en) * | 2014-01-30 | 2015-08-05 | 广西大学 | Amplitude adjustable crank slider controlled excitation mechanism |
| CN107262352A (en) * | 2017-04-12 | 2017-10-20 | 浙江大学宁波理工学院 | A kind of combination of vibrations system of vibrating device and nonsinusoidal waveform |
| CN108827457A (en) * | 2018-06-12 | 2018-11-16 | 太原理工大学 | Vibration amplitude iteration control method based on transmission function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3208070A1 (en) * | 1982-03-05 | 1983-09-08 | Maschinenbau Ulm Gmbh, 7900 Ulm | Vibrator device |
| CN2395826Y (en) * | 1999-06-02 | 2000-09-13 | 燕山大学 | Non-sinusoidal vibration generator driven by machinery |
| CN2597099Y (en) * | 2003-01-09 | 2004-01-07 | 陈彦彬 | Multi-shaft connecting rod vibration exciter for vibration screen |
| CN1546242A (en) * | 2003-01-09 | 2004-11-17 | 陈彦彬 | Multiple shaft rod drive exciting apparatus for vibrating screen |
| JP3707253B2 (en) * | 1998-08-10 | 2005-10-19 | いすゞ自動車株式会社 | Positioning parts and positioning method for linked structures |
-
2010
- 2010-12-07 CN CN 201010575884 patent/CN102125910B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3208070A1 (en) * | 1982-03-05 | 1983-09-08 | Maschinenbau Ulm Gmbh, 7900 Ulm | Vibrator device |
| JP3707253B2 (en) * | 1998-08-10 | 2005-10-19 | いすゞ自動車株式会社 | Positioning parts and positioning method for linked structures |
| CN2395826Y (en) * | 1999-06-02 | 2000-09-13 | 燕山大学 | Non-sinusoidal vibration generator driven by machinery |
| CN2597099Y (en) * | 2003-01-09 | 2004-01-07 | 陈彦彬 | Multi-shaft connecting rod vibration exciter for vibration screen |
| CN1546242A (en) * | 2003-01-09 | 2004-11-17 | 陈彦彬 | Multiple shaft rod drive exciting apparatus for vibrating screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445353A (en) * | 2011-10-10 | 2012-05-09 | 江苏科技大学 | Mechanical simple harmonic excitation device |
| CN104819814A (en) * | 2014-01-30 | 2015-08-05 | 广西大学 | Amplitude adjustable crank slider controlled excitation mechanism |
| CN107262352A (en) * | 2017-04-12 | 2017-10-20 | 浙江大学宁波理工学院 | A kind of combination of vibrations system of vibrating device and nonsinusoidal waveform |
| CN108827457A (en) * | 2018-06-12 | 2018-11-16 | 太原理工大学 | Vibration amplitude iteration control method based on transmission function |
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| Publication number | Publication date |
|---|---|
| CN102125910B (en) | 2013-01-09 |
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