CN108982043A - A kind of vibration excitor - Google Patents
A kind of vibration excitor Download PDFInfo
- Publication number
- CN108982043A CN108982043A CN201710414336.6A CN201710414336A CN108982043A CN 108982043 A CN108982043 A CN 108982043A CN 201710414336 A CN201710414336 A CN 201710414336A CN 108982043 A CN108982043 A CN 108982043A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- revolute pair
- angular displacement
- displacement sensor
- controlled motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/04—Monodirectional test stands
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
A kind of vibration excitor is made of supporting table, the first controlled motor, the second controlled motor, shaft coupling, the first diesis Hooks coupling universal coupling, connecting rod, the second diesis Hooks coupling universal coupling, the first revolute pair, the second revolute pair, third revolute pair, the 4th revolute pair, first connecting rod, second connecting rod, third connecting rod, the first angular displacement sensor, the second angular displacement sensor, fixed bracket, slider bracket, pilot sleeve, vibration output shaft.When MPU control first connecting rod (1), third connecting rod (3) rotational speed omega 1 and ω 2 equal when; change the relationship (i.e. phase difference) between first connecting rod (1) and phase α 1, the α 2 of third connecting rod (3), the amplitude of sliding block (6) displacement vector can realize continuous online non-stop-machine adjustment.
Description
Technical field:
The present invention relates to a kind of vibration excitors, belong to vibration test technical field.
Background technique:
Conventional mechanical vibration excitor has equipment using mechanisms such as eccentric stiffener, slider-crank mechanism and cam mechanisms
Simply, low, the easy to use advantage of price, but that there are excited frequencies is single, the adjustment of exciting amplitude need to shut down and cannot be real-time
The problems such as being adjusted online, the real-time online that cannot achieve exciting amplitude continuously adjusts and more excited frequency complex vibrations are defeated
Out；Electromagnetic actuator can arbitrarily control excited frequency and amplitude, and wave distortion is small, but to carry out significantly, exciting greatly
Power test difficulty is big, and the equipment needed is huge, and cost is high；Fluid pressure type vibration excitor is more satisfactory in performance, low frequency, substantially
The problems such as degree, big exciting force exciting are exported and are easily adjusted, but there are cost height and ancillary equipment are big, inconvenient to use.Cause
And with it is at low cost, easy to use, be easy to implement that amplitude real-time online is continuously adjustable and the mechanical exciting of complex vibration output
Effect of the device in vibration test is more and more important.
Summary of the invention:
It can be realized amplitude real-time online the technical problem to be solved in the present invention is to provide one kind to be continuously adjusted and compound vibration
The mechanical vibration excitor of dynamic output.The present invention solves a kind of above-mentioned technical problem: vibration excitor using following technical scheme, by first
Connecting rod (1), second connecting rod (2), third connecting rod (3), the first controlled motor (4), the second controlled motor (5), sliding block (6), shaft coupling
Device (7), the first diesis ten thousand (8) are to shaft coupling, connecting rod (17), the second diesis Hooks coupling universal coupling (9), pilot sleeve
(10), the first angular displacement sensor (11), the second angular displacement sensor (12), the first revolute pair (13), the second revolute pair (14),
Third revolute pair (15), the 4th revolute pair (16), vibration output shaft (18), fixed bracket (19), pedestal (20) composition, first connects
Bar (1) is connected by the first revolute pair (13), shaft coupling (7) with the first controlled motor (4), is driven by first motor (4), the
The other end of one connecting rod (1) is connected by the second revolute pair (14) with one end of second connecting rod (2), and second connecting rod (2) is another
End is connected by third revolute pair (15) with third connecting rod (3) one end, and third connecting rod (3) other end passes through the 4th revolute pair
(16), the first diesis Hooks coupling universal coupling (8), connecting rod (17) and the second diesis Hooks coupling universal coupling (9) and second it is controlled
Motor (5) is connected, and is driven by the second motor (5), wherein the equal length of first connecting rod (1) and third connecting rod (3), vibration
Output shaft (10) does linear reciprocation shock motion along pilot sleeve (18)；First angular displacement sensor (11) and the second angular displacement pass
Sensor (12) is connected with the first revolute pair (13), third revolute pair (15) respectively, first connecting rod (1) and third connecting rod (3)
Corner displacement is measured by the first angular displacement sensor (11) and the second angular displacement sensor (12), is controlled by control unit MPU
The rotational speed omega 1 of first connecting rod (1) and third connecting rod (3), ω 2, and first connecting rod, the phase angle [alpha] 1 of third connecting rod, α 2 are adjusted, it is real
The continuously adjustable vibration with combination frequency of the real-time online of existing exciting agency amplitude exports.
The real-time online that a kind of vibration excitor of the invention realizes mechanical exciting agency amplitude is continuously adjusted and compound frequency
The vibration of rate exports；The peak swing of exciting agency is twice of conventional crank sliding block exciting agency amplitude, minimum amplitude zero,
Solve the problems, such as that mechanical exciting agency cannot achieve amplitude real-time online and be continuously adjusted, with electromagnetic type and fluid pressure type vibration excitor
It compares, it is easy to use to be realized with a low cost the function of the continuously adjustable vibration output with combination frequency of amplitude real-time online.
Detailed description of the invention
A kind of Fig. 1: structural schematic diagram of vibration excitor.
A kind of Fig. 2: mechanism principle figure of vibration excitor.
A kind of Fig. 3: working principle diagram of vibration excitor.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
A kind of width-adjustable crank block of the present invention is connected by exciting control mechanism by first connecting rod (1), second connecting rod (2), third
Bar (3), the first controlled motor (4), the second controlled motor (5), sliding block (6), shaft coupling (7), the first diesis ten thousand (8) are to shaft coupling
Device, connecting rod (17), the second diesis Hooks coupling universal coupling (9), pilot sleeve (10), the first angular displacement sensor (11), second
Angular displacement sensor (12), the first revolute pair (13), the second revolute pair (14), third revolute pair (15), the 4th revolute pair (16),
Output shaft (18), fixed bracket (19), pedestal (20) composition are vibrated, first connecting rod (1) passes through the first revolute pair (13), shaft coupling
(7) it is connected with the first controlled motor (4), is driven by first motor (4), the other end of first connecting rod (1) passes through the second rotation
Secondary (14) are connected with one end of second connecting rod (2), and second connecting rod (2) other end passes through third revolute pair (15) and third connecting rod
(3) one end is connected, and third connecting rod (3) other end passes through the 4th revolute pair (16), the first diesis Hooks coupling universal coupling (8), connects
Extension bar (17) and the second diesis Hooks coupling universal coupling (9) are connected with second controlled motor (5), are driven by the second motor (5),
Wherein, the equal length of first connecting rod (1) and third connecting rod (3), vibrating output shaft (10), along pilot sleeve (18) to do straight line past
Multiple shock motion；First angular displacement sensor (11) and the second angular displacement sensor (12) respectively with the first revolute pair (13),
Three revolute pairs are connected (15), the corner displacement of first connecting rod (1) and third connecting rod (3) by the first angular displacement sensor (11) and
Second angular displacement sensor (12) is measured, and the rotational speed omega of first connecting rod (1) and third connecting rod (3) is controlled by control unit MPU
1,2 ω, and first connecting rod, the phase angle [alpha] 1 of third connecting rod, α 2 are adjusted, realize that the real-time online of exciting agency amplitude is continuously adjustable
Vibration with combination frequency exports.
As shown in Figure 1, the first controlled motor (4) and the second controlled motor (5) can make stepper motor either servo electricity
Machine, the first controlled motor (4) and the second controlled motor (5) respectively drive first connecting rod (1) and third connecting rod (3), first connecting rod
(1) it is controlled respectively by MPU with the revolving speed of third connecting rod (3) with phase, the first angular displacement sensor (11) and the second angular displacement pass
Sensor (12) is connected with the hinge axis of first connecting rod (1) and third connecting rod (3) respectively, for measuring first connecting rod (1) and third
Corner displacement α 1, the α 2 of connecting rod (3) adjust the rotational speed omega 1 and ω 2 of first connecting rod (1) and third connecting rod (3) by control MPU
Just it is able to achieve the vibration output of sliding block (6) combination frequency；When MPU controls 1 He of rotational speed omega of first connecting rod (1), third connecting rod (3)
When ω 2 is equal, change the relationship (i.e. phase difference) between first connecting rod (1) and phase α 1, the α 2 of third connecting rod (3), sliding block (6)
The amplitude of displacement vector can change with the change of the size of phase difference, between first connecting rod (1) and third connecting rod (3)
Phase difference size can pass through MPU and control controlled motor and carry out continuous online non-stop-machine change, sliding block (6) displacement vector
Amplitude can realize continuous online non-stop-machine adjustment, when phase difference between first connecting rod (1) and third connecting rod (3)
Size is 180 °, and exciting agency reaches peak swing, is the conventional identical single uncontrolled motor-driven slide crank of size
Twice of block exciting agency amplitude；When phase difference between first connecting rod (1) and third connecting rod (3) size be 0 °, minimum amplitude
It is zero, consecutive variations between 0~360 ° of phase difference, then the amplitude of exciting agency continuously becomes between peak swing and minimum amplitude
Change.Third connecting rod (3) hinge axis generates biggish axial direction and radial displacement, therefore third as sliding block (6) moves left and right
Connecting rod (3) need to pass through the first diesis Hooks coupling universal coupling (8), connecting rod (17) and the second diesis Hooks coupling universal coupling (9) and the
Two controlled motors (5) are connected.
Claims (1)
1. a kind of vibration excitor, it is characterised in that by supporting table, the first controlled motor, the second controlled motor, shaft coupling, first pair ten
Word Hooks coupling universal coupling, connecting rod, the second diesis Hooks coupling universal coupling, the first revolute pair, the second revolute pair, third revolute pair,
Four revolute pairs, first connecting rod, second connecting rod, third connecting rod, the first angular displacement sensor, the second angular displacement sensor, fixed branch
Frame, sliding block, pilot sleeve, vibration output shaft composition；First connecting rod, second connecting rod are successively connected with third connecting rod with hinge,
First connecting rod is connected by shaft coupling with the first controlled motor, is driven by the first controlled motor, and third connecting rod passes through first pair
Cross universal coupling, connecting rod and the second diesis Hooks coupling universal coupling are connected with second controlled motor, controlled by second
The corner displacement of motor driven, first connecting rod and third connecting rod is surveyed by the first angular displacement sensor and the second angular displacement sensor
Out, the revolving speed of first connecting rod and third connecting rod is controlled by control unit MPU and adjusts the phase angle of first connecting rod, third connecting rod
Realize that the real-time online of exciting agency amplitude is continuously adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414336.6A CN108982043A (en) | 2017-06-05 | 2017-06-05 | A kind of vibration excitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414336.6A CN108982043A (en) | 2017-06-05 | 2017-06-05 | A kind of vibration excitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108982043A true CN108982043A (en) | 2018-12-11 |
Family
ID=64501959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710414336.6A Pending CN108982043A (en) | 2017-06-05 | 2017-06-05 | A kind of vibration excitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108982043A (en) |
-
2017
- 2017-06-05 CN CN201710414336.6A patent/CN108982043A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203688189U (en) | Amplitude-adjustable crank block controlled excitation mechanism | |
| CN102042895B (en) | Sine pressure generator with differential piston | |
| CN205165132U (en) | Vibration excitation device with adjustable frequency and amplitude | |
| CN103121008A (en) | Planar linkage cantilever type reciprocating oscillation mechanism of culturing oscillator | |
| CN206392811U (en) | Dual-Servo Motor synchronously drives mould non-sinusoidal vibration device | |
| CN104819814A (en) | Amplitude adjustable crank slider controlled excitation mechanism | |
| US2613036A (en) | Vibratory and rotary ball mill | |
| CN208275341U (en) | A kind of two plastid acoustic resonance mixing arrangements suitable for Composite Energetic Materials | |
| CN106493315B (en) | The synchronous driving mould non-sinusoidal vibration device of Dual-Servo Motor | |
| CN108393020A (en) | A kind of two plastid acoustic resonance mixing arrangements suitable for Composite Energetic Materials | |
| CN111670284A (en) | Machine for stabilizing a track | |
| CN108757372A (en) | A kind of plunger pump of stepper motor and lead screw driving | |
| CN108982043A (en) | A kind of vibration excitor | |
| US2924106A (en) | Compensating motion transmitting arrangement for roll housing means | |
| CN201058364Y (en) | Vibrator of adjustable eccentricity type crystallizer | |
| CN107870073A (en) | A kind of mechanical exciting agency | |
| CN109926312B (en) | Eccentric block with movable balancing weight, vibrator and vibrating screen | |
| CN208140324U (en) | Magnetic suspension rotor experimental bench | |
| CN101869887A (en) | Dual drive four link mechanism | |
| CN208261209U (en) | Three shock electric machine elliptically vibrating screens of synchronous belt coupling | |
| CA2266762A1 (en) | Unbalanced vibrator for stone forming machines | |
| CN207385888U (en) | A kind of combination of vibrations system of vibrating device and nonsinusoidal waveform | |
| CN109108602A (en) | The gauge stand of clock and watch and the automatic assembling machine of bottom cover and assembly method | |
| CN201702096U (en) | Dual-drive four-link mechanism | |
| US5652002A (en) | Vibration apparatus for concrete molding box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181211 |
|
| WD01 | Invention patent application deemed withdrawn after publication |