CN1055130A - Centrifugal mechanical vibration exciter with crossed slide blocks - Google Patents
Centrifugal mechanical vibration exciter with crossed slide blocks Download PDFInfo
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- CN1055130A CN1055130A CN 90101705 CN90101705A CN1055130A CN 1055130 A CN1055130 A CN 1055130A CN 90101705 CN90101705 CN 90101705 CN 90101705 A CN90101705 A CN 90101705A CN 1055130 A CN1055130 A CN 1055130A
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- China
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- mechanical vibration
- exciting force
- centrifugal
- vibration exciter
- axles
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Centrifugal mechanical vibration exciter with crossed slide blocks is a kind of mechanical vibration generator, is applicable to the mechanical type vibration mechine, vibrating feed, compacting, and the occasion of various utilization vibration work such as piling is as exciting source.Two axles that radially depart from, front and back configuration vertically, the crosshead shoe of a symmetry links by two quadrature moving sets and two axles on it.When they rotated with unequal angular velocity W, it was the centrifugal exciting force of 2W that the center of mass motion of slide block produces angular frequency.Change the radial distance between the diaxon, can adjust the amplitude of exciting force.
Description
The invention belongs to centrifugal mechanical vibration exciter, be a kind of mechanical vibration generator.
The existing mechanical vibrator mainly is made up of the rotating shaft that has eccentric mass that is installed in the container body of outer cover.Centrifugal force when utilizing the eccentric mass rotation perhaps utilizes the exciting force of the projection of this centrifugal force on a certain longitudinal axis as simple harmonic quantity as exciting force.Eccentric mass can be fixed on the rotating shaft, also can do position adjustment on rotating shaft, so that adjust amplitude of exciting force.The angular frequency value of exciting is identical with the magnitude of angular velocity of axle rotation.Because be subjected to the influence of aspects such as bearing, friction, noise, the highest excited frequency is restricted, and adjusts amplitude of exciting force as needs when exciting is worked, just need on rotating axle, adjust the position of eccentric mass, guiding mechanism is complicated.
" instrument and meter Environmental Technology and Hardware Description Manual " (in September, 1988 front page) that instrument and meter industry office of machinery committee of country publishes introduced two kinds of centrifugal mechanical vibration exciters that are used for vibration mechine in the 4th piece of the 3rd chapter the 1st joint.Wherein a kind of is with a screw-casing mechanism rectilinear motion to be become to rotatablely move, thereby the relative angle that changes two fan-shaped eccentric mass is adjusted exciting force; Another kind is to adopt rotating piston oil-cylinder to replace fan-shaped eccentric block, utilizes the method for the position of oil pressure control piston in oil cylinder to adjust exciting force.Their the exciting angular frequency all drive shaft turns angular speed with them is identical.
C.H Ke Renikefu etc. are at " mechanism " (Chinese translation, China Machine Press, in March, 1985 Beijing front page) introduced the centrifugal mechanical vibration exciter of many types in the volume two Chapter 11 " vibrator and vibration protection device ", but the excited frequency of most of mechanism equals the driving angular speed of driving shaft.Wherein mechanism can realize dither shown in Figure 11,12, but can not adjust exciting force in when work, and bel-drivenn centre-to-centre spacing has fluctuation, when several vibrators are worked simultaneously, is difficult to keep synchronized relation accurately.
The objective of the invention is to improve the highest excited frequency of centrifugal mechanical vibration exciter, enlarge its operating frequency range, simplify the guiding mechanism of amplitude of exciting force.
The present invention finishes as follows: two axles that distance is radially arranged, front and back are configured on the vibrator container body of outer cover vertically.Crosshead shoe as the symmetry of eccentric mass is arranged between the diaxon, and between slide block and the diaxon end, the pair that moves radially by two quadratures is connected to each other.
The bearing position of axle can be fixed, and also can regulate, to adjust two radial distances between the axle.
Obviously, when driving wherein arbitrary, these three members rotate with unequal angular velocity.Shown in accompanying drawing (1), the axis of establishing diaxon lays respectively at O
1O
2Point, radial distance are 2r, and the slide block centroid position is P, O
1P and O
2P is the mobile axis of two moving sets, with O
1O
2Mid point be origin of coordinate O.Because two moving sets quadrature, i.e. O
1P ⊥ O
2P,
Can get: O
1P
2=X
2+ (r+Y)
2
O
2P
2＝X
2+（r-Y）
2
O
1P
2+O
2P
2＝（2r）
2
X
2+Y
2＝r
2
Be that track that P is ordered is one to be the garden heart with O, r is the garden of radius.Make radius vector OP=r, because at triangle OPO
1In, OO
1=OP=r is so there is θ
2=2 θ
1
And w
2=θ '
2=2w
1
As drive arbitrary axle and make it with angular speed w
1Rotate, then slide block barycenter P is with w
2=2w
1Angular speed be the circular motion of r around the O point as radius, the generation angular frequency is 2w
1Centrifugal exciting force:
F＝mr（2w
1）
2
Wherein m is the slide block quality.Change the 2r value, promptly regulate the radial distance between the diaxon, just can adjust the amplitude of exciting force.
The present invention has following advantage compared to existing technology: under identical drive shaft turns angular speed, the present invention can obtain the exciting force of the excited frequency of twice, so can improve the highest excited frequency of centrifugal mechanical vibration exciter, enlarges its operating frequency range.Perhaps under same excited frequency, reduce work noise.When needing to adjust amplitude of exciting force, only need adjust the position of a supporting-point, not relate to the institutional adjustment on the high speed rotating parts, so guiding mechanism is greatly simple.
Accompanying drawing (1) is the schematic diagram of mass center of mass motion.In this axial view, P is the mass barycenter, O
1O
2Be respectively the axial location of diaxon, O is O
1O
2Mid point, also be the center of P circular motion.
Accompanying drawing (2) accompanying drawing (3) is a concrete vibrator.Accompanying drawing (2) is a full sectional view.Wherein (1) is worm screw, and (2) are worm gear, and (3) are eccentric disc, and (4) are front axle, and (5) are container body of outer cover, and (6) are crosshead shoe, and (7) are rear axle.Position when being in ultimate range for diaxon shown in the figure.
Below, an example of (2) accompanying drawing (3) description comes specific explanations the present invention in conjunction with the accompanying drawings: shown in accompanying drawing (2), on the front and back tank wall of the container body of outer cover (5) of vibrator, stagger by having adorned two front and back respectively, the axle that is arranged in parallel, wherein rear axle (7) directly is bearing on the rear box wall with bearing.(4) are installed in radial disbalance apart from being on the eccentric disc (3) of R with bearing on the front axle, and eccentric disc is bearing in the preceding tank wall hole that rear box wall dead eye radial disbalance is R.On the cylindrical of eccentric disc, worm gear (2) is housed, is meshed with worm screw (1) on being installed in tank wall.Rotary worm rotates eccentric disc in preceding tank wall hole, can change the axial location of front axle, and the journal offset amount 2r of diaxon changes in the scope of [O, 2R] before and after making.There are two plain bearing bores at a fork two ends of every shaft end, are connected with the pivot of two quadratures in the middle of the crosshead shoe (6) respectively.
Drive rear axle (7), make it with w
1Angular speed rotate, then the slide block barycenter is with 2w
1Angular speed be the circular motion of r around the diaxon mid point as radius, produce F=mr(2w
1)
2Centrifugal exciting force.Rotary worm is regulated two axial lines radial distance 2r value, can change the amplitude of exciting force.
Claims (2)
1, a kind of centrifugal mechanical vibration exciter, form by container body of outer cover, parts of bearings, rotating shaft and eccentric massblock, it is characterized in that two axles that radially depart from, configuration vertically, the eccentric massblock of a cross slider type, moving sets by two quadratures on it is connected with two axles, utilizes the circular motion that doubles a rotational angular velocity of mass barycenter to produce exciting force.
2, by the mechanical vibration exciter of claim 1 regulation, it is characterized in that having the moving axle supporting of position changeable, adjust amplitude of exciting force to regulate between the diaxon radially the mode of bias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90101705 CN1055130A (en) | 1990-03-26 | 1990-03-26 | Centrifugal mechanical vibration exciter with crossed slide blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90101705 CN1055130A (en) | 1990-03-26 | 1990-03-26 | Centrifugal mechanical vibration exciter with crossed slide blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1055130A true CN1055130A (en) | 1991-10-09 |
Family
ID=4877213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90101705 Pending CN1055130A (en) | 1990-03-26 | 1990-03-26 | Centrifugal mechanical vibration exciter with crossed slide blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1055130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896999A (en) * | 2019-05-06 | 2020-11-06 | 中国石油天然气集团有限公司 | Vibrator and vibration signal control method |
-
1990
- 1990-03-26 CN CN 90101705 patent/CN1055130A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896999A (en) * | 2019-05-06 | 2020-11-06 | 中国石油天然气集团有限公司 | Vibrator and vibration signal control method |
| CN111896999B (en) * | 2019-05-06 | 2023-11-28 | 中国石油天然气集团有限公司 | Vibrator and vibration signal control method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |