CN101886472B - Vibration damper for boom system, boom system and pumping machinery - Google Patents

Vibration damper for boom system, boom system and pumping machinery Download PDF

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Publication number
CN101886472B
CN101886472B CN2010102353245A CN201010235324A CN101886472B CN 101886472 B CN101886472 B CN 101886472B CN 2010102353245 A CN2010102353245 A CN 2010102353245A CN 201010235324 A CN201010235324 A CN 201010235324A CN 101886472 B CN101886472 B CN 101886472B
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CN
China
Prior art keywords
vibration
boom system
vibration absorber
rotary
rotation
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Expired - Fee Related
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CN2010102353245A
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Chinese (zh)
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CN101886472A (en
Inventor
周翔
喻志平
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Sany Heavy Industry Co Ltd
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Sany Heavy Industry Co Ltd
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Priority to CN2010102353245A priority Critical patent/CN101886472B/en
Publication of CN101886472A publication Critical patent/CN101886472A/en
Priority to PCT/CN2011/075669 priority patent/WO2012010020A1/en
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Publication of CN101886472B publication Critical patent/CN101886472B/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04Devices for both conveying and distributing
    • E04G21/0418Devices for both conveying and distributing with distribution hose
    • E04G21/0445Devices for both conveying and distributing with distribution hose with booms
    • E04G21/0454Devices for both conveying and distributing with distribution hose with booms with boom vibration damper mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • B66C13/066Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads for minimising vibration of a boom
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22Compensation of inertia forces

Abstract

The invention discloses pumping machinery, a boom system of the pumping machinery, and a vibration damper for the boom system. The vibration damper for the boom system comprises a main body, a rotating body, an adjustable speed motor and a control mechanism, wherein, the main body is installed on the boom system, the rotating body is rotatablely installed on the main body, the adjustable speed motor drives the rotating body to rotate around a rotation axis relative to the main body, and the gravity center of the rotating body deviates from the rotation axis; the control mechanism comprises a vibration sensor and a processor, the vibration sensor can detect initial vibration of the boom system, and the processor can command the adjustable speed motor to operate according to an initial vibration signal detected by the vibration sensor so as to drive the rotating body to rotate and generate leveling vibration; and the vibrating direction of leveling vibration is opposite to that of initial vibration by regulating the rotating parameters of the adjustable speed motor. By using the vibration damper, at least part of initial vibration of the boom system can be offset, thus further reducing vibration of the boom system.

Description

A kind of vibration absorber of boom system, boom system and pumping machine
Technical field
The present invention relates to the technology of viscous fluids such as a kind of pumping of concrete, particularly a kind of vibration absorber of boom system, and boom system also relates to the pumping machine with this boom system.
Background technology
Concrete mixer is current application one of pumping machine widely.Concrete mixer generally comprises pumping installations and boom system.Pumping installations generally comprises hopper again, carries cylinder and distributing valve.Boom system comprises jib and carrier pipe, and jib comprises by more piece and be hinged and connected the joint arm that forms through being laterally hinged with axle order, and the logical vertical jointed shaft in jib bottom links to each other with underframe, and the jib end stretches to preposition; Carrier pipe comprises the pipeline that more piece links to each other in proper order, and pipeline is separately fixed on the corresponding joint arm.Hopper is used to deposit concrete; Distributing valve can carry out the state conversion under oscillating oil cylinder drives, in the predetermined very first time, make and carry cylinder to be connected with hopper, in the second predetermined time, makes and carries cylinder to be connected with the carrier pipe of boom system.Carry the piston of cylinder can under Driven by Hydraulic Cylinder, carry out stretching motion; When carrying cylinder to be connected with hopper, contract after making the piston of carrying cylinder, suck an amount of concrete, the completion suction; When carrying cylinder to be connected with the carrier pipe of boom system, make and carry the piston of cylinder overhanging, the concrete mud that sucks is pressed in the carrier pipe through distributing valve, carry out stock, and concrete is applied predetermined pressure, concrete is flowed along carrier pipe; Repeatedly suction and stock can make concrete arrive the delivery outlet of carrier pipe, flow out from the carrier pipe delivery outlet, arrive predetermined concrete work position.Change the position relation between the joint arm in the jib, can change the terminal position of jib, make the delivery outlet of carrier pipe corresponding, make things convenient for the carrying out of concrete pouring operation with preposition.
According to the difference of concrete structure, the distributing valve of pumping installations can be skirt valve, C shape valve, slide valve or S valve.Though the specific constructive form of distributing valve exists different; But its operating principle is basic identical; Both its basic function was to change through state; Make pumping installations can carry out suction and stock in a predetermined manner times without number, and then pumping of concrete discontinuously, concrete mode with pulsation in carrier pipe is flowed.
The concrete that flows with pulse mode must produce the pulsed impact to boom system, makes boom system produce vibration.In addition, for transmission and concrete transmission is arrived far away or higher position, boom system is the elongated rod shape structure on the whole; The boom system of elongated rod shape structure also can amplify the vibration that boom system produces, and makes the jib end produce the very vibration of large amplitude.The frequency that the pulsed that produces when pumping is impacted and the eigentone of boom system near or when equating, boom system will produce strong resonance, under specific circumstances, the amplitude of jib end possibly reach more than the 1m.
Boom system produces amplitude, the excessive vibration of intensity not only makes concrete be difficult to arrive the precalculated position, influences the quality of concrete work and carries out smoothly, also can cause the fatigue damage of pumping installations, boom system, and then influence the application life of concrete mixer.Because the complexity of concrete mixer working condition, the vibration source that causes vibration has a plurality of, and this just makes that the vibration regularity of boom system is very complicated, is difficult to eliminate its vibration source.
In order to reduce the terminal amplitude of jib, the vibration of stabilizing boom system discloses respectively through the flexible technical scheme of stabilizing the boom system vibration of hydraulic cylinder like JP3040592B2, CN1486384A and CN1932215A.In practical application, the effectiveness in vibration suppression of technique scheme is unsatisfactory, and motion mode and structure are also very complicated.Therefore, the vibration that how to reduce boom system remains those skilled in the art's technical issues that need to address.
Summary of the invention
For this reason, first purpose of the present invention is, a kind of vibration absorber of boom system is provided, to reduce the vibration of boom system.
Second purpose of the present invention is, a kind of boom system that comprises above-mentioned vibration absorber is provided.
The 3rd purpose of the present invention is, a kind of pumping machine that comprises above-mentioned boom system is provided.
In order to realize above-mentioned first purpose, the vibration absorber of boom system provided by the invention comprises body, rotary body, buncher and controlling organization; Said body is installed on the boom system, and said rotary body is rotatably installed on the body, and said buncher driven in rotation body rotates around a rotation with respect to said body, the said rotation of the deviation of gravity center of said rotary body; Said controlling organization involving vibrations sensor and processor; Said vibrating sensor can obtain the initial vibration signal that characterizes the boom system initial vibration; Said processor can be according to initial vibration signal instruction buncher running, make the rotary body rotation and produce the direction of vibration of direction of vibration and said initial vibration opposite stabilize vibration; Said rotary body comprises rotary substrate and eccentric weight, links to each other through distance adjustor between said eccentric weight and the rotary substrate, with the center of gravity of regulating rotary body and the distance between the said rotation.
Optional, said distance adjustor comprises screw rod, and said screw rod two ends link to each other with eccentric weight with said rotary substrate respectively, and in the screw rod two ends, has at least between an end and the corresponding components to link to each other through motion thread.
Optional, said screw rod links to each other with rotary substrate through motion thread; Said distance adjustor also comprises the roll adjustment motor that is installed on the rotary substrate, and said roll adjustment motor-driven screw rod is around the center line rotation of said motion thread.
Optional, said distance adjustor comprises screw rod, the worm gear that matches and worm screw, said worm gear and worm screw are rotatably installed on the rotary substrate respectively; Said screw rod one end links to each other with worm gear through motion thread, and the other end links to each other with eccentric weight, the center line of this motion thread and the central lines of said worm gear.
Optional, said distance adjustor also comprises the roll adjustment motor that is installed on the rotary substrate, the said worm screw rotation of said roll adjustment motor-driven.
Optional, said processor can also be according to the amplitude instruction roll adjustment motor rotation of initial vibration.
Optional, also comprise the alignment sensor that can detect rotary body center of gravity phase place; Said processor can also be according to the phase bit instruction buncher running of rotary body center of gravity.
In order to realize above-mentioned second purpose; Boom system provided by the invention comprises by more piece through being laterally hinged with a jib that the joint arm that order is hinged and connected forms; Also comprise at least one vibration absorber; Said vibration absorber is the vibration absorber of above-mentioned any boom system, and the joint arm of the body of said vibration absorber and boom system is hinged or fixing.
Optional, at least one vibration absorber is installed in the jib end.
Optional, the vibrating sensor and the body of said vibration absorber are installed in same position, and have predetermined distance between this position and the jib bottom.
In order to realize above-mentioned the 3rd purpose, pumping machine provided by the invention comprises underframe and boom system, and said boom system is above-mentioned any boom system, and the bottom of said jib links to each other through a vertical jointed shaft with underframe.
In the vibration absorber of boom system provided by the invention, body and boom system are fixed, and rotary body can rotate with respect to body around a rotation, and the said rotation of the deviation of gravity center of said rotary body, have predetermined eccentric throw; The controlling organization involving vibrations sensor and the processor of vibration absorber; Vibrating sensor can obtain the initial vibration signal that characterizes the boom system initial vibration; Processor can turn round according to initial vibration signal instruction buncher; Make rotary body rotation, and produce the direction of vibration of direction of vibration and said initial vibration opposite stabilize vibration; So just a part of initial vibration of offset arm frame system at least reduces the boom system vibration.Compare with existing damping technology scheme, the moving device of this vibration damping produces through the rotary body rotation stabilizes vibration, not only simple in structure, and functional reliability is also than higher, safeguards very convenient and application life is longer.
In further technical scheme, link to each other through distance adjustor between said eccentric weight and the rotary substrate, can regulate the distance between eccentric weight and the said rotation through distance adjustor, realization is to the adjusting of rotary body center of gravity eccentric throw; Thereby can make and stabilize vibration and have different vibrational energies, can make like this that to stabilize vibration corresponding with multiple initial vibration, offset multiple initial vibration, satisfy the needs of pumping machine difference operating modes.
Further in the technical scheme, distance adjustor comprises screw rod; Through the rotating screw bar, can regulate the distance between eccentric weight and the rotary substrate continuously, for accurately adjusting the vibrational energy of stabilizing vibration good prerequisite is provided.
In further technical scheme, said distance adjustor also comprises the roll adjustment motor that is installed on the rotary substrate, with through the rotation of roll adjustment motor-driven screw rod, the eccentric throw of the center of gravity of rotary body is regulated; This technical scheme not only can be provided convenience for the eccentric throw of regulating the rotary body center of gravity, the more important thing is the automation and the far distance controlled that can realize the eccentric throw adjustment.
In further technical scheme, in the distance adjustor, the eccentric throw that the worm gear that matches and worm screw are regulated eccentric weight is set also; Can utilize the self-locking property of worm gear and worm screw like this, in the rotary body rotary course, the distance of eccentric weight and rotation remained unchanged, improve and stabilize the stability of vibration, improve effectiveness in vibration suppression.
In further technical scheme; Also be provided with the alignment sensor that detects rotary body center of gravity phase place; Can confirm the phase place of rotary body exactly like this, thereby select suitable startup constantly, form the suitable vibration of stabilizing in the short period of time; Offset initial vibration quickly, improve the reaction speed of vibration absorber.
Providing on the basis of above-mentioned vibration absorber, the boom system that provides also has corresponding technique effect; Further, a plurality of vibration absorbers are installed on boom system can be stabilized the initial vibration of each position, guarantee the stability that boom system is whole in a plurality of positions; Because the amplitude of the initial vibration that jib is terminal is maximum, in further technical scheme, at least one vibration absorber is installed in the jib end, so better the initial vibration of offset arm frame system.
In further technical scheme, in a vibration absorber, and to compare with the installation site of body, the installation site of vibrating sensor more is close to the bottom of jib, just more near vibration source; Like this, the detection position and the vibration source of vibrating sensor are nearer, can obtain the initial vibration signal of initial vibration in advance; For processor processes provides the reaction time more more than needed, not only can improve the reaction speed of vibration absorber; The vibration of stabilizing that rotary body is produced is carried out with the initial property vibration of body installation site simultaneously, and then helps improving effectiveness in vibration suppression.
Have above-mentioned technique effect owing to have the boom system of this vibration absorber, comprise that the pumping machine of this boom system also has corresponding technique effect.
Description of drawings
Fig. 1 is the structure diagram of the vibration absorber of the boom system that provides of the embodiment of the invention one;
Fig. 2 is the structure diagram of the vibration absorber of the boom system that provides of the embodiment of the invention two;
Fig. 3 is an I-I part enlarged drawing among Fig. 2.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Should be noted that: the technical scheme that provides of the present invention is not limited to be applied in the concrete mixer, also can be applied on the boom system of pumping machine of other toughness materials such as ash-slag delivery, mud.
Taproot of the present invention is: according to the rule of boom system vibration itself; Utilize corresponding mechanism initiatively to produce another vibration again; In the identical time; Make the direction of vibration of two vibrations opposite, and then can vibrate by the of offset arm frame system own, realize reducing the purpose of boom system vibration.Based on this taproot, below technical scheme provided by the invention is described in detail.
For the ease of distinguishing and describe, the vibration of boom system itself is called initial vibration, another vibration that utilizes corresponding mechanism initiatively to produce is called stabilizes vibration.
Please refer to Fig. 1, this figure is the structure diagram of the vibration absorber of the boom system that provides of the embodiment of the invention one.
The vibration absorber that embodiment one provides comprises rotary body 100, body 200, buncher 300 and controlling organization 400; Body 200 is installed on the boom system, specifically can be installed on the corresponding joint arm of boom system; Rotary body 100 is rotatably installed on the body 200, and like this, rotary body 100 just can rotate around rotation O-O with respect to body 200; Buncher 300 and body 200 relative fixed, and its output shaft links to each other with rotary body 100, thereby, when buncher 300 rotates, can rotate around rotation O-O with respect to body 200 by driven in rotation body 100.Simultaneously, the center of gravity G of rotary body 100 departs from rotation O-O, forms the eccentric throw that is fit to; Like this, in rotary body 100 rotary courses, the pulsating that can produce body 200 impacts, and produces vibration accordingly, promptly forms the above-mentioned vibration of stabilizing.For the center of gravity that makes rotary body 100 has suitable eccentric throw; In this example, rotary body 100 comprises the rotary substrate 110 and eccentric weight 120 of plate-like, and rotary substrate 110 cores form a cavity; Eccentric weight 120 is fixing with rotary substrate 110, and center of gravity G is positioned at outside the rotary substrate 110.Simultaneously,, can adopt the bigger material of proportion to process eccentric weight 120, increase the weight of eccentric weight 120 such as being employed in the mode of irritating plumbous in the eccentric weight 120 in order to reduce rotary body 100 volumes.
Controlling organization 400 involving vibrations sensors 410 and processor 420 can also comprise suitable power supply (not shown).Vibrating sensor 410 can vibrate by the detection arm frame system, obtains the initial vibration data that characterize the boom system initial vibration, forms the initial vibration signal, and sends processor 420 to; Side signal transmission is to shown in arrow among the figure.Vibrating sensor 410 can be an acceleration transducer, to confirm the initial vibration data such as direction of vibration, frequency and phase place of boom system according to acceleration signal; Also can be angular transducer, to confirm direction of vibration, frequency and phase place or the like according to angle between institute detection position and the desired location or change in location; It also can be piezoelectric type vibration measurement instrument etc.
Processor 420 can produce according to the initial vibration signal stabilizes the vibration instruction, 300 runnings of instruction buncher, and 100 rotations of buncher 300 driven in rotation bodies make rotary body 100 rotations and produce and stabilize vibration.Change the startup moment of buncher 300, can adjust the phase place of stabilizing vibration, change the rotary speed of buncher 300, just can adjust the frequency and the cycle of stabilizing vibration; Through parameters such as adjustment phase place and rotary speeies, the direction of vibration of stabilizing vibration and initial vibration that rotary body 100 is produced is opposite; And then can offset a part of initial vibration at least, and the amplitude of boom system is reduced, realize reducing the purpose of boom system vibration.
In order to guarantee the processing speed of processor 420, processor 420 can be the high-speed data process chip, like TMS320F2811 or other process chip.For the ease of the rotary speed of adjustment buncher 300, buncher 300 can be a variable-frequency motor, to adjust rotary body 100 rotary speeies through changing frequency; Stabilize the cycle and the phase place of vibration for the ease of adjustment, buncher 300 can also be a stepper motor.
Because it is a plurality of that the vibration source that causes boom system to produce initial vibration has, therefore, initial vibration is normally by the stack of a plurality of periodic vibrations.Stabilize vibration for producing better, offset initial vibration, can also handle the initial vibration signal that vibrating sensor 410 obtains.
Setting under the prerequisite of initial vibration by a plurality of periodic vibration stacks, can the vibration displacement rule that jib is terminal simply be described as:
S = Σ i = 1 n A i sin ( ω i t + φ i ) , i = 1,2,3 . . . , n
In the formula: S---the vibration net amplitude that jib is terminal
A i---the amplitude of i rank vibration
ω i---the frequency of i rank vibration
T---the time
φ i---the phase place of i rank vibration
Like this, the initial vibration of boom system just can be by n periodically sine wave oscillations expression, and n trends towards infinity.In practical application; Can in above-mentioned n periodically sinusoidal stream, select the bigger several sine waves of amplitude or a sine wave as crucial initial vibration data; And be the basis with these key initial vibration data, through control buncher 300, obtain direction of vibration opposite stabilize vibration.Crucial initial vibration can calculate through FFT and obtain, and therefore, processor 420 can be the process chip of special use, also can be for having the general procedure chip of suitable operational capability.
In order to confirm to stabilize the vibration phase of vibration exactly, can make the center of gravity G of rotary body 100 have predetermined phase position in advance, also can be through proofreading and correct repeatedly, repeatedly the mode of adjustment obtains the property the stabilized vibration be scheduled to gradually; Also the relevant detection positioner can be set, to confirm the phase place of rotary body 100 center of gravity G quickly and accurately.
Please again with reference to figure 1, among the embodiment one, vibration absorber also comprises the alignment sensor 500 that can detect rotary body 100 center of gravity G phase places; Alignment sensor 500 can send to processor 420 with testing result after the phase place that detects rotary body 100 center of gravity G.Processor 420 can also detect the rotating speed of the phase controlling buncher 300 that obtains according to alignment sensor 500, can omit the process of repeated calculation like this, and then obtains the suitable vibration of stabilizing quickly.
Alignment sensor 500 has multiple choices, can be travel switch, photoelectric sensor; Preferably near switch, to improve the functional reliability of alignment sensor 500; In order to improve location compliance; Can be provided with a plurality of near switch; A plurality of sensing devices near switch promptly are set on body 200, sensing chip are set, not simultaneously in rotary body 100 center of gravity G phase places in rotary body 100 center of gravity G positions or other precalculated positions; Different inductors spare produces corresponding signal, can confirm the phase place of rotary body 100 center of gravity G so in a wider context; It is high more to be appreciated that accuracy requires, and more sensing devices can be set.
In practical application; Also there are difference in the amplitude of boom system initial vibration and vibrational energy; Stabilize the different initial vibration of vibration counteracting for making; Can also between rotary substrate 110 and eccentric weight 120, distance adjustor be set, to regulate the distance between eccentric weight 120 and the rotation O-O, the eccentric throw of promptly regulating rotary body 100 center of gravity G according to actual needs.
Distance adjustor can have multiple choices.Such as: can realize through the chute and the slide rail that cooperate, and between chute and slide rail, lockable mechanism is set,, eccentric weight 120 kept in position with at preposition locking chute and slide rail; Lockable mechanism can be the locking of pin and pin-and-hole, also can rely on the frictional force locking, or the like.Still realize through cam mechanism, leverage.
For realizing the automation of rotary body 100 center of gravity eccentric throws adjustment, in the vibration absorber of the boom system that the embodiment of the invention two provides, realize the adjusting of eccentric throw through the mode of screw thread transmission.
Please refer to Fig. 2 and Fig. 3, this figure is the structure diagram of the vibration absorber of the boom system that provides of the embodiment of the invention two, and Fig. 3 is an I-I part enlarged drawing among Fig. 2.
Among the embodiment two, the distance adjustor of rotary body 100 comprises screw rod 130, worm gear 140, worm screw 150 and roll adjustment motor 160.Worm gear 140 matches with worm screw 150, and the two is rotatably installed in respectively on the rotary substrate 110.The output shaft of roll adjustment motor 160 links to each other with worm screw 150, can drive worm gear 140 rotations through worm screw 150.Screw rod 130 1 ends link to each other with worm gear 140 through motion thread, and the other end links to each other with eccentric weight 120; The center line of the motion thread between screw rod 130 and the worm gear 140 and the central lines of worm gear 140.Like this; When roll adjustment motor 160 starts; In the time of can driving worm gear 140 rotations through worm screw 150, worm gear 140 can drive screw rod 130 in its axis direction motion through motion thread, and then changes distance between eccentric weight 120 and the rotation O-O; Realization makes the eccentric throw of rotary body 100 center of gravity G produce change to the adjusting of rotary body 100 center of gravity G positions.
Because rotary body 100 itself rotates with respect to body 200, in order to guarantee roll adjustment motor 160 job stabilitys, can roll adjustment motor 160 linked to each other with suitable power supply through brush or swivel joint.Identical with buncher 300, roll adjustment motor 160 can be selected the stepper motor or the motor of other types according to actual needs.
Be appreciated that according to the position between eccentric weight 120 and the rotary substrate 110 relation, can make between screw rod 130 and the eccentric weight 110 to link to each other in a different manner; Allow that at rotary substrate 110 eccentric weight 120 when the axis of screw rod 130 rotates, can make screw rod 130 and eccentric weight 120 be fixedly linked.Do not allow that at rotary substrate 110 eccentric weight 120 when the axis of screw rod 130 rotates, can make screw rod 130 and 120 rotatable linking to each other of eccentric weight; At this moment, can also between screw rod 130 and eccentric weight 120, motion thread be set, and make the motion thread rotation direction at screw rod 130 two ends opposite; Like this, when rotating screw bar 130, eccentric weight 120 is moved at faster speed with respect to rotary substrate 110.
Among the embodiment two, utilize the purpose of worm and gear transmission to be to utilize the counteresteer function of worm and gear, improve the reliability of the moving device of vibration damping.Under specific circumstances; Also the actuating sleeve that links to each other through motion thread with screw rod 130 can be set; And make actuating sleeve and 110 rotatable linking to each other of rotary substrate; Drive the actuating sleeves rotation with roll adjustment motor 160, drive the center line rotation of screw rod 130 through actuating sleeve again, also can realize regulating the purpose of the eccentric throw of rotary body 100 center of gravity G around said motion thread.
When distance adjustor comprises roll adjustment motor 160, roll adjustment motor 160 is linked to each other, with the processor 420 of controlling organization 400 so that processor 420 can be controlled roll adjustment motor 160.At this moment, processor 420 can obtain the vibration of stabilizing of different vibrational energies according to amplitude instruction roll adjustment motor 160 runnings of initial vibration through the eccentric throw that changes rotary body 100 center of gravity G; Specifically can be: at the amplitude of initial vibration during greater than predetermined value; Make roll adjustment motor 160 to predetermined direction rotation; The eccentric throw of rotary body 100 center of gravity G is increased; During less than predetermined value, make roll adjustment motor 160 at the amplitude of initial vibration, rotary body 100 center of gravity G eccentric throws are reduced to opposite spin; The size of predetermined value can be confirmed or preestablishes according to the size of actual eccentric throw.
According to foregoing description, be appreciated that distance adjustor can also be provided with corresponding gear, roll adjustment motor 160 can also carry out transmission through other modes; In suitable occasion, also can roll adjustment motor 160 be saved, through other mode adjustable screw bar 130 or other distance adjustors.Be appreciated that when utilizing screw rod 130 to regulate in screw rod 130 two ends, to have at least between an end and the corresponding components to link to each other simultaneously, just can realize above-mentioned purpose through motion thread.
Providing on the basis of above-mentioned vibration absorber; The present invention also provides a kind of boom system; This boom system comprises by more piece through being laterally hinged with a jib that the joint arm that order is hinged and connected forms; Also comprise above-mentioned any vibration absorber, because vibration absorber has above-mentioned technique effect, the boom system with this vibration absorber also has corresponding technique effect.The body 200 of vibration absorber can be fixed with jib; Also can carry out the hinged and ball-joint of axle, with according to actual needs, through changing the position between body 200 and the jib through suitable mode and jib; Change and stabilize the direction of vibration of vibration, satisfy the more kinds of operating mode needs of boom system; At this moment, also lockable mechanism need be set, keep relative fixed to make vibration absorber and boom system at preposition.
According to factors such as the rigidity of boom system own, convey materials proportions, a plurality of vibration absorbers can be set on jib, stabilize vibration to produce in a plurality of positions.For reducing cost, simplify control procedure, also can use a vibration absorber, the moving preferred installation site of device of vibration damping is that jib is terminal; Because the amplitude maximum that jib is terminal is installed in this position initial vibration of offset arm frame system better with the moving device of vibration damping.
In order to improve the moving effect of vibration damping, can the vibrating sensor 410 of vibration absorber and body 120 be installed in the same position of boom system respectively, just make between the two approachingly as much as possible, and make this position and jib bottom have predetermined distance; Like this; The vibration data that vibrating sensor 410 detects can characterize the vibration of body 120 positions exactly; It is corresponding more accurately with the initial property vibration of body 200 installation sites that stabilizing of rotary body 100 generations vibrated, and offsets the vibration of initial property better, improves effectiveness in vibration suppression.
Providing on the basis of above-mentioned boom system, a kind of pumping machine also is provided, this pumping machine comprises underframe and above-mentioned any boom system, the bottom of said jib links to each other through a vertical jointed shaft with underframe.Because boom system has above-mentioned technique effect, corresponding pumping machine also has corresponding technique effect.
The above only is a preferred implementation of the present invention, should be pointed out that for those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, such as; The concrete data of boom system initial vibration in the time of can be according to concrete use; Selection weight is suitable, the rotary body that center of gravity G eccentric throw is suitable, and these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (11)

1. the vibration absorber of a boom system is characterized in that, comprises body (200), rotary body (100), buncher (300) and controlling organization (400); Said body (200) is installed on the boom system; Said rotary body (100) is rotatably installed on the body (200); Around a rotation (O-O) rotation, the center of gravity (G) of said rotary body (100) departs from said rotation (O-O) to said buncher (300) driven in rotation body (100) with respect to said body (200);
Said controlling organization (400) involving vibrations sensor (410) and processor (420); Said vibrating sensor (410) can obtain the initial vibration signal that characterizes the boom system initial vibration; Said processor (420) can be according to initial vibration signal instruction buncher (300) running, make rotary body (100) rotation and produce the direction of vibration of direction of vibration and said initial vibration opposite stabilize vibration; Said rotary body (100) comprises rotary substrate (110) and eccentric weight (120), links to each other through distance adjustor between said eccentric weight (120) and the rotary substrate (110), with the center of gravity (G) of regulating rotary body (100) and the distance between the said rotation (O-O).
2. the vibration absorber of boom system according to claim 1; It is characterized in that; Said distance adjustor comprises screw rod (130); Said screw rod (130) two ends link to each other with eccentric weight (120) with said rotary substrate (110) respectively, and in screw rod (130) two ends, have at least between an end and the corresponding components to link to each other through motion thread.
3. the vibration absorber of boom system according to claim 2 is characterized in that, said screw rod (130) links to each other with rotary substrate (110) through motion thread; Said distance adjustor also comprises the roll adjustment motor (160) that is installed on the rotary substrate (110), and said roll adjustment motor (160) drives the center line rotation of screw rod (130) around said motion thread.
4. the vibration absorber of boom system according to claim 1; It is characterized in that; Worm gear (140) and worm screw (150) that said distance adjustor comprises screw rod (130), matches, said worm gear (140) and worm screw (150) are rotatably installed in respectively on the rotary substrate (110); Said screw rod (130) one ends link to each other with worm gear (140) through motion thread, and the other end links to each other with eccentric weight (120), the central lines of the center line of this motion thread and said worm gear (140).
5. the vibration absorber of boom system according to claim 4 is characterized in that, said distance adjustor also comprises the roll adjustment motor (160) that is installed on the rotary substrate (110), and said roll adjustment motor (160) drives said worm screw (150) rotation.
6. according to the vibration absorber of claim 3 or 5 described boom systems, it is characterized in that said processor (420) can also be according to amplitude instruction roll adjustment motor (160) running of initial vibration.
7. according to the vibration absorber of each described boom system of claim 1-5, it is characterized in that, also comprise the alignment sensor that can detect rotary body (200) center of gravity (G) phase place; Said processor (420) can also be according to phase bit instruction buncher (300) running of rotary body (100) center of gravity (G).
8. boom system; Comprise by more piece through being laterally hinged with a jib that the joint arm that order is hinged and connected forms; It is characterized in that; Also comprise at least one vibration absorber, said vibration absorber is the vibration absorber of each described boom system of claim 1-7, and the body of said vibration absorber (200) is hinged or fixing with the joint arm of boom system.
9. boom system according to claim 8 is characterized in that at least one vibration absorber is installed in the jib end.
10. boom system according to claim 8 is characterized in that, vibrating sensor of said vibration absorber (410) and body (200) are installed in same position, and have predetermined distance between this position and the jib bottom.
11. a pumping machine comprises underframe and boom system, it is characterized in that, said boom system is claim 8,9 or 10 described boom systems, and the bottom of said jib links to each other through a vertical jointed shaft with underframe.
CN2010102353245A 2010-07-21 2010-07-21 Vibration damper for boom system, boom system and pumping machinery Expired - Fee Related CN101886472B (en)

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PCT/CN2011/075669 WO2012010020A1 (en) 2010-07-21 2011-06-13 Shock-absorbing device for cantilever crane system, cantilever crane system and pumping machine

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