CN103028539A - Self-adaption amplitude adjustable inertia vibration device - Google Patents

Self-adaption amplitude adjustable inertia vibration device Download PDF

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Publication number
CN103028539A
CN103028539A CN2011102933033A CN201110293303A CN103028539A CN 103028539 A CN103028539 A CN 103028539A CN 2011102933033 A CN2011102933033 A CN 2011102933033A CN 201110293303 A CN201110293303 A CN 201110293303A CN 103028539 A CN103028539 A CN 103028539A
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Prior art keywords
guiding mechanism
self adaptation
mechanism framework
screw
elastic parts
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CN2011102933033A
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Chinese (zh)
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范公奇
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范公奇
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Priority to CN2011102933033A priority Critical patent/CN103028539A/en
Publication of CN103028539A publication Critical patent/CN103028539A/en
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Abstract

The invention relates to a self-adaption amplitude adjustable inertia vibration device, the self-adaption amplitude adjustable inertia vibration device can be arranged on a transmission shaft of a vibration machine and comprises an amplitude adjusting mechanism, an adjustable mechanism frame, a positioning screw, a positioning nut and a positioning elastic assembly; and a self-adaption adjusting mechanism matched with the amplitude adjusting mechanism, and provided with an unbalanced block, two guiding screws, at least two adjusting nuts and two elastic assembly. The self-adaption amplitude adjustable inertia vibration device can enable the centroid of the unbalanced block and the offset of the central of the transmission shaft to match with actual demand and willfully adjust the offset from exterior portion, thereby having the advantages of being convenient to adjust, easy to repair, install and disassemble.

Description

Self adaptation width-adjustable inertial excitation device
Technical field
The invention relates to a kind of vibrating device, espespecially a kind of self adaptation width-adjustable inertial excitation device, its can be attached to some machinery and equipment in order to produce exciting force, be the vitals that utilizes mechanical oscillation.Self adaptation width-adjustable inertial excitation device can make the vibratory output that is swashed object acquisition certain forms and size, thereby object is vibrated and strength test, or vibration testing instrument and sensor are calibrated.Self adaptation width-adjustable inertial excitation device also can be used as driver unit and forms vibrating machine, in order to work such as making firm by ramming of the conveying that realizes material or object, screening, closely knit, moulding and soil sandstone.
Background technology
Vibrating machine generally is comprised of vibrator, work body, damper and elastic parts, and vibrator is the key point of vibrating machine success or failure, and vibrator can produce unidirectional or multidirectional, the exciting force of simple harmonic quantity or non-simple harmonic quantity.If with regard to the system of a single shaft inertial vibration machine simple motion on the x-y plane, the power that acts on the vibration plastid comprises body inertia force, damping force, elastic force and exciting force, each moment of vibrating again, always make a concerted effort is zero (force balance principle), therefore center of mass point can be write as at x, y direction of principal axis moving equilibrium equation on the x-y plane
m X · · + C X X · + K X X = F X = m 0 X · · + F X ( t ) ;
m Y · · + C Y Y · + K Y Y = F Y = m 0 Y · · + F Y ( t )
M is body mass body, m in the formula 0Be uneven piece quality, F Y(t)=m 0R ω 2Exciting force, F for the mass centre's Y direction by board X(t)=m 0R ω 2Exciting force, C for the mass centre's X-direction by board YDamping force, C for the mass centre's Y direction by board XDamping force, K for the mass centre's X-direction by board YElastic force, K for the mass centre's Y direction by board XBe the elastic force of the mass centre's X-direction by board, if damping force, elastic force are ignored body inertia force m ω then 2A and uneven piece inertia force m 0R ω 2Mutual balance, the then amplitude of body
Yet that traditional vibrating machine all has is simple in structure, cost is little and the characteristics of less energy consumption, and unstable, the steady-state amplitude of amplitude is adjusted complicated shortcoming when certainly also having the Near resonance oscillating frequency.
Summary of the invention
The inventor is because the shortcoming such as traditional vibrating machine amplitude when resonant frequency is unstable, improves its not enough and disappearance, and then invents out a kind of self adaptation width-adjustable coherence vibrating device.
Self adaptation width-adjustable inertial excitation device of the present invention, it mainly changes viewpoint is to change the conventional inertia vibrating device, it is become can adjust the fixedly uneven piece of eccentric throw, more utilizes the compound action of elastic parts to make uneven piece produce dynamic Eccentricity.
For reaching above-mentioned purpose, be to make aforementioned self adaptation width-adjustable inertial excitation device include:
One amplitude guiding mechanism, to have a guiding mechanism framework, a location screw rod one location nut and a location elastic parts, form a locating slot on this guiding mechanism framework, run through at the guiding mechanism framework and to be formed with a screw that is communicated with locating slot, this positioning screw runs through in the screw that is arranged at the guiding mechanism framework and can stretch into locating slot, this positioning screw cap screw lock is on positioning screw and can be urgent against the guiding mechanism framework, and this location elastic parts is arranged in the locating slot and the relative positioning screw rod; And
One self adaptation guiding mechanism, in conjunction with this amplitude guiding mechanism, and has a uneven piece, two guide blots, adjust nut and two elastic parts at least two, this imbalance piece is arranged on the guiding mechanism framework and the adjacent positioned groove, with the location elastic parts mutually closely against, be formed with respectively one at place, uneven piece both sides and adjust screw, two guide blots pass respectively the guiding mechanism framework, and screw lock is adjusted in the screw two respectively, two adjustment nuts are that screw lock is on guide blot respectively, and each elastic parts two ends is respectively against corresponding guiding mechanism framework and adjustment nut.
Such rotation positioning screw and guide blot can change the distance of the relative guiding mechanism framework of uneven piece.
Aforementioned guiding mechanism framework outwards stretches out respectively a fixed head on the both sides, and each fixed head runs through and is formed with a through hole; Two guide blots pass respectively the through hole on the guiding mechanism framework.
The locating slot of aforementioned guiding mechanism framework is non-circular.
Aforementioned self adaptation guiding mechanism further has two and adjusts pad, and two adjust pad is set on respectively on the guide blot and adjacent adjustment nut; Each elastic parts two ends is then respectively against corresponding fixed head and adjustment pad.
Another purpose of the present invention provides a kind of self adaptation width-adjustable inertial excitation device, and it comprises:
One drive link;
One amplitude guiding mechanism, to have a guiding mechanism framework, one location screw rod, one location nut and a location elastic parts, form a locating slot on this guiding mechanism framework to be set on this power transmission shaft, run through at the guiding mechanism framework and to be formed with a screw that is communicated with locating slot, this positioning screw runs through in the screw that is arranged at the guiding mechanism framework and can stretch into locating slot and urgent against this power transmission shaft, this positioning screw cap screw lock is on positioning screw and can be urgent against the guiding mechanism framework, this location elastic parts is arranged in the locating slot and the relative positioning screw rod, and against power transmission shaft, so that power transmission shaft is packed between positioning screw and the location elastic parts; And
One self adaptation guiding mechanism, in conjunction with this amplitude guiding mechanism, with this amplitude guiding mechanism jointly around being fixed on this power transmission shaft, and has a uneven piece, two guide blots, adjust nut and two elastic parts at least two, this imbalance piece is arranged on the guiding mechanism framework and the adjacent positioned groove, with the location elastic parts mutually closely against, be formed with respectively one at place, uneven piece both sides and adjust screw, two guide blots pass respectively the guiding mechanism framework, and screw lock is adjusted in the screw two respectively, two adjustment nuts are that screw lock is on guide blot respectively, and each elastic parts two ends is respectively against corresponding guiding mechanism framework 31 and adjustment nut.Such rotation positioning screw and guide blot can change the axle center of power transmission shaft and the distance of uneven piece barycenter.
By above-mentioned technological means, self adaptation width-adjustable inertial excitation device major advantage of the present invention is as follows:
1. the amplitude guiding mechanism that can change eccentric throw makes it be respectively fixedly eccentric throw, dynamic Eccentricity, and fixedly eccentric throw is the necessary condition that basic amplitude exists, the amplitude when dynamic Eccentricity can change resonant frequency.Self adaptation width-adjustable inertial excitation device makes vibrating machine have more stably startup and docking process.
2. this power transmission shaft can be general axle center but not eccentric shaft, so stability and the efficient of overall weight when alleviating, processing simple lifting work.
3. see through rotational positioning screw rod and guide blot can be easily according to the suitable amplitude of size adjustment of actual screening materials carrying amount.
4. the vibratory sieve of different size model is as long as increase, subtract self adaptation width-adjustable inertial excitation device quantity, and production cost reduces.
5. reduce the chance of machine breakdown, but reduce the energy rate that may cause Occupational Disaster because of machine breakdown.
6. self adaptation width-adjustable inertial excitation device is easy to adjust, and the maintenance mounting or dismounting easily.
Description of drawings
Fig. 1 is the front view of self adaptation width-adjustable inertial excitation device of the present invention.
Fig. 2 is front-operated schematic diagram of the present invention.
Fig. 3 is lateral plan of the present invention.
Fig. 4 is front of the present invention exploded view.
Fig. 5 is the schematic diagram that the present invention is installed in a twin axle off-resonance inertia vibrating screen.
Fig. 6 is the twin axle off-resonance inertia vibrating screen amplitude of Fig. 5 at the amplitude in when running-motor speed curve map.
The specific embodiment
Below cooperate graphic and of the present invention preferred embodiment, further setting forth the present invention is to reach the technological means that predetermined goal of the invention is taked.
Please refer to Fig. 1 to Fig. 5, self adaptation width-adjustable inertial excitation device of the present invention can be installed on the vibrating machine 90 (a for example twin axle off-resonance inertia vibrating screen (Screen Machine)).This vibrating machine 90 can have a plurality of elastic supports 96, be provided with a frame at elastic support, be provided with a plurality of screen traies 95 and a plurality of power transmission shaft 10 that is connected and rotates synchronously in frame, wherein be fixed with a belt pulley 92 on a power transmission shaft 10 1 ends, and at belt pulley 10 windings one driving belt 93, this driving belt 93 is connected to a motor 94 and rotates in order to drive power transmission shaft 10.In addition, these power transmission shaft 10 cross sections can be non-circular, for example square.
A plurality of self adaptation width-adjustable inertial excitation devices can be arranged on two power transmission shafts 10, each self adaptation width-adjustable inertial excitation device comprises an amplitude guiding mechanism 30 and a self adaptation guiding mechanism 20.In addition, aforementioned power transmission shaft 10 can be considered one of assembly of self adaptation width-adjustable inertial excitation device.
This amplitude guiding mechanism 30 is fixed therein on the power transmission shaft 10, and has a guiding mechanism framework 31, a location screw rod 32, a location nut 33 and a location elastic parts 36.
This guiding mechanism framework 31 roughly is a U-shaped, forms a locating slot 310 at guiding mechanism framework 31, and this locating slot 310 can be non-circular, and is for example square, has the drive link 10 of noncircular cross section with coupling, and can be set on the power transmission shaft 31.Run through at guiding mechanism framework 31 and to be formed with a screw 315 that is communicated with locating slot 310.Outwards stretch out respectively a fixed head 311 on guiding mechanism framework 31 both sides, each fixed head 311 runs through and is formed with a through hole 312.
This positioning screw 32 runs through in the screw 315 that is arranged at guiding mechanism framework 31 and can stretch into locating slot 310 and urgent against this power transmission shaft 10.
These positioning screw cap 33 screw locks on positioning screw 32 and can be urgent against guiding mechanism framework 31 so that positioning screw 32 is fixing and can't rotate, unclamp positioning screw cap 33 and can allow positioning screw 32 recover to rotate.
This location elastic parts 36 can be a spring, is arranged in the locating slot 310 and relative positioning screw rod 32, and against power transmission shaft 10, so that power transmission shaft 10 is packed in positioning screw 32 and locates between the elastic parts 36.
This self adaptation guiding mechanism 20 is in conjunction with this amplitude guiding mechanism 30, with this amplitude guiding mechanism 30 jointly around being fixed on this power transmission shaft 10, and have a uneven piece 21, two guide blots 22, at least two and adjust nuts 23, two and adjust pads 24 and two elastic parts 25.
This imbalance piece 21 is arranged on the guiding mechanism framework 31 and adjacent positioned groove 310, with location elastic parts 36 mutually closely against, be formed with respectively one at place, uneven piece 21 both sides and adjust screw 210.
Two guide blots 22 are the through holes 312 that pass respectively on the guiding mechanism framework 31, and screw lock is adjusted in the screw 210, so that uneven piece 21 is fixed on the guiding mechanism framework 31 two respectively.Rotational positioning screw rod 32 and guide blot 22 can change the distance of uneven piece 21 relative guiding mechanism frameworks 31, therefore can change fixedly eccentric throw (distances of power transmission shaft 10 axle center and uneven piece 21 barycenter).(eccentric throw+dynamic Eccentricity of eccentric throw=fixedly, fixedly eccentric throw no longer changes after setting, and dynamic Eccentricity increases or reduces with the revolution condition.)
Two adjustment nuts 23 are that the difference screw lock is on guide blot 22.
Two adjustment pads 24 are to be set on respectively on the guide blot 22 and adjacent adjustment nut 23.
Two elastic parts 25 are not to be set on the guide blot 22, and each elastic parts 25 two ends is respectively against the fixed head 311 of corresponding guiding mechanism framework 31 and adjust nut 23.When being provided with adjustment pad 24, each elastic parts 25 two ends is then respectively against corresponding fixed head 311 and adjustment pad 24.
In use of the present invention, uneven piece 21 sees through guide blot 22, adjust nut 23, adjust pad 24, elastic parts 25 and guiding mechanism framework 31 are fixed in self adaptation guiding mechanism 20 on the square power transmission shaft 10, utilize location elastic parts 36, positioning screw 32 is adjusted the fixedly size of eccentric throw, guarantee again the stability of eccentric throw in the work with positioning screw cap 33 lockings, the degree of tightness of adjusting elastic parts 25 makes its active force greater than the inertia force of uneven piece 21 when vibrating machine 90 intrinsic frequency, making the amplitude of vibrating machine 90 before arriving operating frequency only is the effect generation of fixedly eccentric throw, is not peak swing.After the operating frequency of vibrating machine 90 is by intrinsic frequency, just reach gradually maximum when setting revolution via the increase of dynamic Eccentricity (Δ R what follows).
As shown in Figure 2, adjustment mode of the present invention and operation principle are described as follows:
Eccentric throw is according to R 00+ δ A+ R 1+ R 2=(R+ Δ R), K δ 0=m 0R ω 0 2, Δ R=K δ A=m 0(R+ Δ R) ω 2To change etc. equational pass, wherein:
δ 0: the deflection (mm) of elastic parts when intrinsic frequency,
δ A: the deflection (mm) of elastic parts when operating frequency,
K: elasticity is number (Kg/mm),
R 0: set eccentric throw adjustment amount (mm),
R: set eccentric throw (mm),
R 1: power transmission shaft radius (mm),
R 2: uneven piece centroid distance (mm),
Δ R: dynamic Eccentricity (mm),
ω: operating frequency,
m 0: uneven piece quality (Kg),
ω o: intrinsic frequency, ω o = K S m S ,
K S: the elasticity of vibrational system is number (Kg/mm), m S: the vibrational system gross mass.
Start in (parking) process at self adaptation width-adjustable inertial excitation device, can be with the eccentric throw of uneven piece 21, the control (resonant frequency) after actual revolution is surpassing (being lower than) setting revolution that sees through elastic parts 25 develops into maximum (developing into minimum of a value).
Fig. 5 is the schematic diagram that inertia vibrator self adaptation amplitude guiding mechanism applies to twin axle off-resonance inertia vibrating screen, eccentric shaft with traditional vibratory sieve among the figure changes square shaft into, amplitude guiding mechanism of the present invention and self adaptation guiding mechanism example schematic are used in the not plain block cancellation at two ends.
Fig. 6 is the amplitude variations figure functional simulation schematic diagram of twin axle off-resonance inertia vibrating screen under different natural frequencies, and solid line is that running situation, the dotted line of traditional vibratory sieve are that vibratory sieve installation the present invention function situation, dotted line (curve that discontinuous line segment consists of) afterwards then installed best performance of the present invention for vibratory sieve among the figure.Because dotted line and dotted line can be found out, after using the present invention, can effectively reduce the vibratory sieve motor the startup stage the excessive problem of amplitude when having slow speed, the range of revolution that effective expansion can be worked, after for example installing the present invention additional, vibratory sieve low-frequency range (100-200RPM for example, actual low-frequency range according to the difference of Machine Type and different) but also become working range.
When twin axle off-resonance inertia vibrating screen used self adaptation width-adjustable inertial excitation device of the present invention, its major advantage was as follows:
1. the amplitude guiding mechanism 30 that can change eccentric throw makes it be respectively fixedly eccentric throw, dynamic Eccentricity, and fixedly eccentric throw is the necessary condition that basic amplitude exists, the amplitude when dynamic Eccentricity can change resonant frequency.Self adaptation width-adjustable inertial excitation device makes vibrating machine have more stably startup and docking process.
2. this power transmission shaft 10 can be general axle center but not eccentric shaft, so stability and the efficient of overall weight when alleviating, processing simple lifting work.
3. see through rotational positioning screw rod 32 and guide blot 22 can be easily according to the suitable amplitude of size adjustment of actual screening materials carrying amount.
4. the vibratory sieve of different size model is as long as increase, subtract self adaptation width-adjustable inertial excitation device quantity, and production cost reduces.
5. reduce the chance of machine breakdown, but reduce the energy rate that may cause Occupational Disaster because of machine breakdown.
6. self adaptation width-adjustable inertial excitation device is easy to adjust, and the maintenance mounting or dismounting easily.
The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, in the scope that does not break away from technical solution of the present invention, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (10)

1. a self adaptation width-adjustable inertial excitation device is characterized in that, described self adaptation width-adjustable inertial excitation device comprises:
One amplitude guiding mechanism, to have a guiding mechanism framework, a location screw rod one location nut and a location elastic parts, form a locating slot on the described guiding mechanism framework, run through at the guiding mechanism framework and to be formed with a screw that is communicated with locating slot, described positioning screw runs through in the screw that is arranged at the guiding mechanism framework and can stretch into locating slot, described positioning screw cap screw lock is on positioning screw and can be urgent against the guiding mechanism framework, and described location elastic parts is arranged in the locating slot and the relative positioning screw rod; And
One self adaptation guiding mechanism, in conjunction with described amplitude guiding mechanism, and has a uneven piece, two guide blots, adjust nut and two elastic parts at least two, described uneven piece is arranged on the guiding mechanism framework and the adjacent positioned groove, with the location elastic parts mutually closely against, be formed with respectively one at place, uneven piece both sides and adjust screw, two guide blots pass respectively the guiding mechanism framework, and screw lock is adjusted in the screw two respectively, two adjustment nuts are that screw lock is on guide blot respectively, and each elastic parts two ends is respectively against corresponding guiding mechanism framework and adjustment nut.
2. self adaptation width-adjustable inertial excitation device according to claim 1 is characterized in that rotational positioning screw rod and guide blot can change the distance of the relative guiding mechanism framework of uneven piece.
3. self adaptation width-adjustable inertial excitation device according to claim 2 is characterized in that, outwards stretches out respectively a fixed head on the guiding mechanism framework both sides, and each fixed head runs through and is formed with a through hole; Two guide blots pass respectively the through hole on the guiding mechanism framework.
4. self adaptation width-adjustable inertial excitation device according to claim 3 is characterized in that the locating slot of described guiding mechanism framework is non-circular.
5. self adaptation width-adjustable inertial excitation device according to claim 4 is characterized in that, described self adaptation guiding mechanism further has two and adjusts pad, and two adjust pad is set on respectively on the guide blot and adjacent adjustment nut; Each elastic parts two ends is then respectively against corresponding fixed head and adjustment pad.
6. a self adaptation width-adjustable inertial excitation device is characterized in that, described self adaptation width-adjustable inertial excitation device comprises:
One drive link;
One amplitude guiding mechanism, to have a guiding mechanism framework, one location screw rod, one location nut and a location elastic parts, form a locating slot on the described guiding mechanism framework to be set on the described power transmission shaft, run through at the guiding mechanism framework and to be formed with a screw that is communicated with locating slot, described positioning screw runs through in the screw that is arranged at the guiding mechanism framework and can stretch into locating slot and urgent against described power transmission shaft, described positioning screw cap screw lock is on positioning screw and can be urgent against the guiding mechanism framework, described location elastic parts is arranged in the locating slot and the relative positioning screw rod, and against power transmission shaft, so that power transmission shaft is packed between positioning screw and the location elastic parts; And
One self adaptation guiding mechanism, in conjunction with described amplitude guiding mechanism, with described amplitude guiding mechanism jointly around being fixed on the described power transmission shaft, and has a uneven piece, two guide blots, adjust nut and two elastic parts at least two, described uneven piece is arranged on the guiding mechanism framework and the adjacent positioned groove, with the location elastic parts mutually closely against, be formed with respectively one at place, uneven piece both sides and adjust screw, two guide blots pass respectively the guiding mechanism framework, and screw lock is adjusted in the screw two respectively, two adjustment nuts are that screw lock is on guide blot respectively, and each elastic parts two ends is respectively against corresponding guiding mechanism framework and adjustment nut.
7. self adaptation width-adjustable inertial excitation device according to claim 6 is characterized in that, rotational positioning screw rod and guide blot can change the axle center of power transmission shaft and the distance of uneven piece barycenter.
8. self adaptation width-adjustable inertial excitation device according to claim 7 is characterized in that, outwards stretches out respectively a fixed head on the guiding mechanism framework both sides, and each fixed head runs through and is formed with a through hole; Two guide blots pass respectively the through hole on the guiding mechanism framework.
9. self adaptation width-adjustable inertial excitation device according to claim 8 is characterized in that the locating slot of described guiding mechanism framework is non-circular.
10. self adaptation width-adjustable inertial excitation device according to claim 9 is characterized in that, described self adaptation guiding mechanism further has two and adjusts pad, and two adjust pad is set on respectively on the guide blot and adjacent adjustment nut; Each elastic parts two ends is then respectively against corresponding fixed head and adjustment pad.
CN2011102933033A 2011-09-29 2011-09-29 Self-adaption amplitude adjustable inertia vibration device Pending CN103028539A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495540A (en) * 2013-10-10 2014-01-08 中联重科股份有限公司 Vibration exciter and vibration sieve
CN103691668A (en) * 2013-11-26 2014-04-02 中国矿业大学 Vibrating screen natural frequency regulating method and device
CN104338670A (en) * 2014-07-17 2015-02-11 安徽易奇软件科技有限公司 Electromechanical vibration device
CN106670102A (en) * 2017-03-14 2017-05-17 湖南山瑞重工科技有限公司 Circular vibrating screen
CN106903038A (en) * 2017-03-14 2017-06-30 湖南山瑞重工科技有限公司 The vibrator of vibratory sieve
WO2017166413A1 (en) * 2016-03-30 2017-10-05 中国矿业大学 Large modular vibration screen with variable span and variable vibration amplitude
CN108187997A (en) * 2018-01-25 2018-06-22 昆明理工大学 A kind of cam-type Chaotic Vibration Exciter
CN111420873A (en) * 2020-03-31 2020-07-17 中铁工程服务有限公司 Adjustable-amplitude screening equipment for shield construction muck treatment
CN114405798A (en) * 2021-12-31 2022-04-29 中国飞机强度研究所 Eccentric block suitable for middle-high speed rotation

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CN1415432A (en) * 2002-09-30 2003-05-07 胡继云 Inertial exciter
CN2754743Y (en) * 2004-10-22 2006-02-01 胡利魁 Amplitude variable screening machine
JP2010240553A (en) * 2009-04-03 2010-10-28 Hitachi Constr Mach Co Ltd Vibration generator
CN202343428U (en) * 2011-09-29 2012-07-25 范公奇 Self-adaptive inertial vibration device capable of modulating amplitude

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US4830534A (en) * 1987-10-21 1989-05-16 Hyster Company Dual amplitude vibration generator for compaction apparatus
CN2079533U (en) * 1990-09-17 1991-06-26 廖继章 Vibration exciting device capable of self-adjusting eccentricity
CN1415432A (en) * 2002-09-30 2003-05-07 胡继云 Inertial exciter
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495540A (en) * 2013-10-10 2014-01-08 中联重科股份有限公司 Vibration exciter and vibration sieve
CN103691668A (en) * 2013-11-26 2014-04-02 中国矿业大学 Vibrating screen natural frequency regulating method and device
CN103691668B (en) * 2013-11-26 2015-08-19 中国矿业大学 A kind of vibratory sieve intrinsic frequency control method and device
CN104338670A (en) * 2014-07-17 2015-02-11 安徽易奇软件科技有限公司 Electromechanical vibration device
WO2017166413A1 (en) * 2016-03-30 2017-10-05 中国矿业大学 Large modular vibration screen with variable span and variable vibration amplitude
CN106670102A (en) * 2017-03-14 2017-05-17 湖南山瑞重工科技有限公司 Circular vibrating screen
CN106903038A (en) * 2017-03-14 2017-06-30 湖南山瑞重工科技有限公司 The vibrator of vibratory sieve
CN108187997A (en) * 2018-01-25 2018-06-22 昆明理工大学 A kind of cam-type Chaotic Vibration Exciter
CN111420873A (en) * 2020-03-31 2020-07-17 中铁工程服务有限公司 Adjustable-amplitude screening equipment for shield construction muck treatment
CN114405798A (en) * 2021-12-31 2022-04-29 中国飞机强度研究所 Eccentric block suitable for middle-high speed rotation

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Application publication date: 20130410