CN206478152U - Vibration absorber, vibratory sieve and asphalt blending station - Google Patents

Abstract

The utility model is related to a kind of vibration absorber, vibratory sieve and asphalt blending station, wherein, vibration absorber includes material containing component (26) and moving component, bulk material is filled with material containing component (26), one end of moving component is connected with vibrating mass, the other end is extend into the inner chamber of material containing component (26), moving component can be reciprocating in bulk material when the Oscillation Amplitude of vibrating mass exceedes preset value, with the energy for the vibration generation that dissipated by the friction between bulk material and between moving component and bulk material and collision, so as to carry out vibration damping to vibrating mass.Such a vibration absorber.Such a vibration absorber can effectively carry out vibration damping to vibrating mass, the service life of equipment where extension vibrating mass；And the damping device structure is simple, can avoid producing direct severe impact during vibration damping.

Description

Vibration absorber, vibratory sieve and asphalt blending station

Technical field

The utility model is related to vibrosieve equipment technical field, more particularly to a kind of vibration absorber, vibratory sieve and pitch Blending station.

Background technology

Asphalt blending station be according to design proportioning the coarse aggregate after heat drying under certain temperature, fine aggregate, filler and The mixtures such as pitch stir into the complete set of equipments of homogeneous mixture of material, be widely used to highway, urban road, harbour, In the infrastructure constructions such as airport.

Aggregate screening is carried out using linear vibrating screen mostly in asphalt blending station, the service behaviour height of linear vibrating screen is straight Connect the quality of production and production efficiency of influence asphalt blending station.Linear vibrating screen belongs to non-resonant mechanical, and working frequency, which is located at, shakes Outside dynamic sieve resonance region, and much larger than resonant frequency, off-resonance forced vibration state is in during normal work.But in start and stop Cheng Zhonghui passes through peak swing in resonance region, resonance region and can reach the ten times even more big of working amplitude.The large amplitude meeting of cataclysm Structural reliability to sieve nest in vibratory sieve has a negative impact, to supporting the stability of screen box of sieve nest to also result in potential danger Danger, while the stability to asphalt blending station main building may also cause larger destruction, so linear vibrating screen is in shutdown process There may be adverse effect to each structural member of blending station for the large magnitude produced during middle process resonance region.

If directly cut off the electricity supply when vibratory sieve is shut down, freely shut down by vibratory sieve, after shock electric machine power-off, sieve nest is made Vibration frequency gradually damped free vibration, when crossing resonance region, amplitude increase, the screen box shaking amplitude increase of vibratory sieve, because shaking Dynamic sieve is installed at the top of asphalt blending station main building about 25 meters high from the ground, and now caused main building rocks more apparent, mixes and stirs Building stability is relatively low.Shorten because the service life of vibratory sieve occurs in the influence of resonance, hot aggregate storage bin cracking, main building on main building Deformation of timbering etc. endangers, while extending the downtime of vibratory sieve, the stand-by period for being again started up equipment is longer.

In order to reduce influence of the resonance to vibratory sieve, occur in that a kind of shock electric machine to vibratory sieve is carried out in the prior art The mode of braking is specific that the opportunity and reversing braking time of accessing negative-phase sequence power supply are accurately controlled using timing controller System, is accessed or cut off based on the time technical scheme of braking power, can make vibratory sieve quickly through resonance region.Although the program one Determine to reduce in degree and the mistake large amplitude that resonance region is produced is crossed in vibratory sieve stopping process, but electricity when being due to vibratory sieve work Machine is operated under higher rotation speed, and reversing braking can make current surge, reduces the reliability of vibrating motor, or even burns motor, and Larger impact is caused to motor and machine driven system, its service life is reduced.In order to overcome these shortcomings, it would be highly desirable to study one Plant the mistake large amplitude produced when new scheme passes through resonance region to reduce under vibratory sieve start and stop operating mode.

Utility model content

The purpose of this utility model is to propose a kind of vibration absorber, vibratory sieve and asphalt blending station, and the vibration absorber has Preferable effectiveness in vibration suppression and the severe impact produced during vibration damping can be reduced.

To achieve the above object, the utility model first aspect provides a kind of vibration absorber, including material containing component And moving component, the material containing component is interior to be filled with bulk material, and one end of the moving component is connected with vibrating mass, The other end is extend into the inner chamber of the material containing component, the moving component can the vibrating mass Oscillation Amplitude It is reciprocating in the bulk material during more than preset value, with by between bulk material and the moving component with it is described Friction and collision between bulk material, which dissipate, vibrates the energy of generation, so as to carry out vibration damping to the vibrating mass.

Further, the moving component includes moving lever, and the moving lever is stretched into the material containing component inner chamber One end be provided with guide portion, be inserted into so as to the moving lever in the gap between the bulk material.

Further, the moving lever is relative to the setting angle of the material containing component and shaking for the vibrating mass Dynamic direction is consistent.

Further, the outline of the guide portion is back taper or at least part sphere.

Further, the bulk material is scattered solid rigid particle swarm.

Further, one end that the moving component is stretched into the material containing component inner chamber is free end, the fortune The free end of dynamic component when the vibrating mass does not vibrate higher than the bulk material upper surface.

Further, the distance between the free end of the moving component and the upper surface of the bulk material are not less than institute State semi-amplitude of the vibrating mass in vibration.

Further, one end that the moving component is stretched into the material containing component inner chamber is free end, the fortune Upper surface of the free end of dynamic component when the vibrating mass does not vibrate with the bulk material.

Further, in addition to seal and pressing plate, on the face that the material containing component is stretched into for the moving component Provided with opening, the seal is pressed in the opening by the pressing plate, and the moving component enters through the seal In the inner chamber of the material containing component.

Further, including multiple moving components, multiple moving components are pressed in the material containing component Directly line, camber line, circle, triangle or polygonal array.

Further, including multiple moving components, the material containing component is cell body, multiple moving components It is arranged at intervals along the length direction of the cell body, and on the central plane of the cell body.

Further, in addition to the first supporting member and the second supporting member, the moving component and vibrating mass are all provided with On first supporting member, the material containing component is located on second supporting member.

Further, in addition to shock-absorbing spring, the shock-absorbing spring is connected to first supporting member and described second Between supporting member.

Further, the moving component includes installing plate and sets moving lever on a mounting board, and the moving lever passes through The installing plate is located on first supporting member.

Further, first supporting member includes otic placode, stiffener plate and bearing plate, the stiffener plate and load-bearing Predetermined angle is formed between plate, the otic placode is at least connected in side with the stiffener plate and bearing plate, the moving component It is located on the bearing plate, the stiffener plate is provided with mounting hole, for connecting the vibrating mass.

To achieve the above object, the utility model second aspect provides a kind of vibratory sieve, including screen box, sieve nest and above-mentioned Vibration absorber described in embodiment, the sieve nest is operationally as the vibrating mass, and the sieve nest is filled by the vibration damping Put and be connected with the screen box.

Further, the vibratory sieve is linear vibrating screen.

Further, the sieve nest includes side plate, screen cloth, the first support beam, the second support beam and tension part, the sieve The two ends of net are connected with first support beam and the tension part respectively, and second support beam is located at the screen bottom To provide support force, the vibration absorber is connected on the side plate.

To achieve the above object, the utility model third aspect provides a kind of asphalt blending station, including above-described embodiment Described vibratory sieve.

Based on above-mentioned technical proposal, vibration absorber of the present utility model, including moving component and inside are filled with granular media thing The material containing component of material, one end of moving component is connected with vibrating mass, and the other end extend into the inner chamber of material containing component In, can be reciprocating in bulk material when the Oscillation Amplitude of vibrating mass exceedes preset value, to pass through bulk material Between and the friction between moving component and bulk material and collision dissipate vibration produce energy so that effectively to vibration section Part carries out vibration damping, the service life of equipment where extension vibrating mass；And the damping device structure is simple, can avoid subtracting Direct severe impact is produced during shaking.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application, Schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model improper Limit.In the accompanying drawings：

Fig. 1 is the structural representation of one embodiment of linear vibrating screen used in the utility model asphalt blending station；

Fig. 2 is the front view of one embodiment of the utility model vibration absorber；

Fig. 3 is the right view of vibration absorber shown in Fig. 2；

Fig. 4 is the scheme of installation of shock-absorbing spring in the utility model vibration absorber；

Fig. 5 is the structural representation of moving lever in vibration absorber shown in Fig. 2；

Fig. 6 is the structural representation of another embodiment of moving lever in the utility model vibration absorber；

Fig. 7 is the partial enlarged drawing of material containing component in vibration absorber shown in Fig. 2；

Fig. 8 is the structural representation of one embodiment when material containing component is cell body in vibration absorber shown in Fig. 2；

Fig. 9 is the structural representation of seal in vibration absorber.

Description of reference numerals

1- screen boxs；2- vibration absorbers；3- screen clothes；4- sieve nests；The support beams of 5- first；6- vibrating motors；7- excitings Beam；8- ring-grooved rivets；The bolts of 9- first；10- side plates；The support beams of 11- second；12- tension parts；13- striker plates； 14- amplitude boards；

The supporting members of 21- first；22- installing plates；23- moving levers；24- pressing plates；25- seals；26- materials hold Receive part；The supporting members of 27- second；28- sleeves；The bolts of 28A- second；29- shock-absorbing springs；211- otic placodes；212- adds Strengthening tendons plate；213- bearing plates；214- mounting holes；221- fixing holes；231- connecting portions；232- guide portions；251- first Through hole；The through holes of 252- second；The long side plates of 261-；262- bottom plates；263- short side plates；264- third through-holes；71- I-beams Side plate；72- I-beams；A- solid rigid particle swarms；B- is open.

Embodiment

The utility model described further below.In the following paragraphs, the different aspect of embodiment is defined in more detail. The each side so limited can be combined with any other one side or many aspects, not can be combined unless explicitly stated otherwise.Especially It is, it is considered to be preferred or favourable any feature can it is one or more with other be considered as preferred or favourable spy Levy combination.

The description merely for convenience such as " first ", " second " that occurs in the utility model term, to distinguish with identical The different building blocks of title, are not offered as priority or primary-slave relation.

In description of the present utility model, it is to be understood that term " length ", " width ", " height ", " on ", " under ", The orientation or position relationship of the instruction such as " left side " and " right side " are, based on orientation shown in the drawings or position relationship, to be for only for ease of and retouch State the utility model, rather than indicate or imply signified device must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that limitation to the utility model protection domain.

In order to avoid vibratory sieve of the prior art produces larger impact, this practicality using reversing braking method to equipment It is new to propose a kind of vibration absorber, it can be used for being arranged on decay vibratory sieve in vibratory sieve and pass through resonance region under start and stop operating mode When the mistake large amplitude that produces, naturally it is also possible in other plant equipment for needing vibration damping.

As shown in Fig. 2,3 and 7, in a schematical embodiment, vibration absorber 2 includes material containing component 26 and fortune Bulk material, one end of moving component and vibrating mass direct or indirect connection are filled with dynamic component, material containing component 26, The other end is extend into the inner chamber of material containing component 26.Vibration i.e. moving component does not occur in vibrating mass and is in original state When, the other end of moving component can keep preset distance, contact or be inserted into bulk material with the upper surface of bulk material In.(for example resonated) when the Oscillation Amplitude of vibrating mass exceedes preset value, moving component can be made in bulk material Move back and forth, to dissipate what vibration was produced by the friction between bulk material and between moving component and bulk material and collision Energy, so as to carry out vibration damping to vibrating mass.When the Oscillation Amplitude of vibrating mass is not less than preset value, moving component it is another End may not be contacted with bulk material, it is also possible to reciprocating in bulk material to play damping effect.

It will be described in detail below so that the vibration absorber 2 is used in vibratory sieve as an example.Linear vibrating screen master shown in Fig. 1 To include screen box 1 and sieve nest 4, sieve nest 4 is connected in screen box 1 by vibration absorber 2, and when linear vibrating screen works, sieve nest 4 is made Vibrated for vibrating mass, to be screened to material.The vibration absorber 2 can both be used alone in vibratory sieve, also may be used Set with increasing on the basis of the former spring damping supporting mechanism of vibratory sieve.

Such a vibration absorber 2 at least has the following advantages that：

(1) when vibratory sieve passes through resonance region in staring and stopping operation, amplitude abruptly increase, now resonance amplitude is the ten of work range As many as times, during moving component moves reciprocatingly with sieve nest 4 in bulk material, it can be carried out with the particle in bulk material Momentum is changed, and is made occur inelastic collision and phase mutual friction between bulk material and between moving component and bulk material, is dissipated Because of the energy that resonance is produced, the mistake large amplitude that asphalt blending station vibratory sieve is produced by resonance can be quickly reduced, when shortening it and becoming steady Between, and vibration damping bandwidth, resonance region effectiveness in vibration suppression significantly, is stood firm so as to reduce when vibratory sieve staring and stopping operation crosses resonance region to mixing and stirring Qualitatively influence, extend the service life of the miscellaneous equipment such as vibratory sieve and blending station main building.

(2) vibration absorber 2 is simple in construction, changes small to former Structure of Vibrating Screen, and will not be to vibrating motor 6 and its machine Tool transmission system produces direct severe impact, improves the service life of vibratory sieve.

In this embodiment, such as Fig. 2, Fig. 5 and Fig. 6, moving component includes moving lever 23, for example, can be that section is circle The rod-like structure of shape, triangle or rectangle, one end that moving lever 23 is stretched into the inner chamber of material containing component 26 has guide portion 232, so that moving lever 23 is inserted into the gap of bulk material.When sieve nest 4 vibrates, guide portion 232 can make motion Bar 23 is easier to enter in the gap between each particle of bulk material, prevents from running into excessive resistance during vibration damping and influenceing vibration damping Effect, while can also protect moving lever 23 to be not susceptible to damage.

Guide portion 232 has tapered shape, for example, the outline for the guide portion 232 that Fig. 5 is provided is back taper, is shaking During dynamic sieved resonance region, the structure can be such that moving lever 23 is easier to insert into bulk material, and that is brought during reduction vibration damping rushes Hit power.The outline for the guide portion 232 that Fig. 6 is provided is hemispherical, can also be according to demand at least part sphere, in vibratory sieve When crossing resonance region, the structure can effectively increase the resistance in the insertion bulk material of moving lever 23, improve vibration and be sieved through resonance region When effectiveness in vibration suppression.Further, in order to improve the bonding strength between guide portion 232 and moving lever 23, guide portion 232 is with transporting It is attached between lever 23 by connecting portion 231, for example, connecting portion 231 is cylindrical structural.

Further, the installation of moving lever 23 for convenience, as shown in Figure 5 and Figure 6, in moving lever 23 close to vibrating mass One end be provided with installing plate 22, be attached for example with modes such as welding, moving lever 23 is vertical relative to installing plate 22 or inclines Tiltedly set.For example, installing plate 22 is rectangle, a fixing hole 221 is respectively provided with four angles of installing plate 22, to move Bar 23 is connected with vibrating mass.

When setting moving lever 23, moving lever 23 is relative to the setting angle of material containing component 26 and shaking for vibrating mass Dynamic direction is consistent.When moving lever 23 is obliquely installed relative to installing plate 22, the angle of inclination of moving lever 23 and shaking for vibratory sieve Dynamic direction is identical, can so increase move distance of the moving lever 23 in bulk material, it is lateral that reduction moving lever 23 is subject to Power, to ensure the intensity of moving lever 23；Simultaneously can also strengthen the momentum-exchange of moving lever 23 and bulk material, make bulk material and Inelastic collision and phase mutual friction are farthest carried out between moving lever 23 and between bulk material, so that fast dissipation is sieved Body 4 crosses energy during resonance region, and reduction sieve nest 4 produced large amplitude.

One end that moving lever 23 is stretched into the inner chamber of material containing component 26 is free end, is not vibrated in vibrating mass When, the free end of moving lever 23 can keep preset distance, contact or be inserted into bulk material with the upper surface of bulk material In.

Kept in the free end of moving lever 23 and the upper surface of bulk material in the embodiment of preset distance, as shown in Fig. 2 The free end of moving lever 23 is higher than the upper surface of bulk material in an initial condition.So normal operating conditions is in vibratory sieve When, moving lever 23 is not contacted with bulk material as far as possible with vibratory sieve synchronous vibration, is reduced and is produced additional friction and energy expenditure. When vibratory sieve is in staring and stopping operation, resonance, which occurs, for vibratory sieve makes amplitude increase suddenly, and moving lever 23 is worn with vibratory sieve synchronous vibration Insert between bulk material and carry out vibration damping.

Preferably, the distance between the free end of moving lever 23 and the upper surface of bulk material are shaking not less than vibrating mass Semi-amplitude when dynamic.When so ensure that vibratory sieve moving lever 23 is with vibratory sieve synchronous vibration in normal operation, no Contacted with bulk material, so as to avoid vibration absorber 2 from bringing resistance in vibratory sieve normal work.More preferably, by moving lever 23 Free end and the distance between the upper surface of bulk material be set to semi-amplitude, moreover it is possible to reduce the height of the occupancy of vibration absorber 2 Space.In actual vibratory sieve, the distance suitably can also increase 0mm~5mm on the basis of vibratory sieve semi-amplitude.

In the embodiment of the free end of moving lever 23 and the upper surface of bulk material, vibratory sieve is carrying out normal screen When being allocated as industry, moving lever 23 contacts less with bulk material, produces resistance very little.When vibration is sieved through resonance region, moving lever 23 It is the damping force by bulk material in the original position that large amplitude is produced excessively, the move distance of moving lever 23 is shorter, Ke Yigeng Mistake large amplitude when asphalt blending station vibration is sieved through resonance region is effectively reduced, effectiveness in vibration suppression becomes apparent from.

Wherein, the bulk material mentioned in above example can be scattered solid rigid particle swarm A, with reference to Fig. 2, Gu Body hard particles group A is filled in material containing component 26.Solid rigid particle swarm A loading, level are matched somebody with somebody, material etc. can Depending on the model of specific vibratory sieve.Alternately, bulk material can also be the preferable material of the mobility such as fine sand.

For example, hard particles group A can be made up of metal balls such as steel ball, iron ball, copper ball, shot or sintered carbide balls, The particle size range of grain is 0.1mm~30mm.What is filled in material containing component 26 can be the ball of single material, also can will be a variety of The ball of material is mixed, and grain composition meets close-graded as far as possible.Moreover, the resistance to elevated temperatures in order to improve vibration absorber 2, Solid rigid particle swarm A operating temperature saves regular maintenance at 150 DEG C or so, and with automatic antirust function.In addition, solid Body hard particles group A depth of cracking closure can be maintained between ten times to 15 times of vibratory sieve list amplitude.

Vibration absorber 2 of the present utility model is after working long hours, and solid rigid particle swarm A and moving lever 23 may be produced Raw mild wear, produces a small amount of powder.In order to improve this phenomenon, a small amount of lubrication can be poured into material containing component 26 and is situated between Matter, such as lubricating oil, to reduce solid rigid particle swarm A abrasion, while the purpose of cooling can also be played, prevents solid Hard particles group's A long-term works sinter scab into, ensure that the reliability that vibration absorber 2 works, and improve asphalt blending station Service life.

From the point of view of Optimization Vibration effect, multiple moving components are may include in vibration absorber 2, multiple moving components exist Arranged in material containing component 26 according to shapes such as straight line, camber line, circle, triangle or polygons.

In a kind of structure type, material containing component 26 is that one or more motion portion can be set in cell body, cell body Part.If the quantity of moving component is two, it can be arranged along the length or width of cell body；If the quantity of moving component For more than three, it can arrange, can also be arranged by other structures form along the length direction of cell body.

As shown in figure 3, length direction of multiple moving components (such as three moving levers 23) along cell body is arranged at intervals, it is excellent Selection of land, multiple moving components are located on the central plane of cell body along its length.When moving component includes moving lever 23, motion The center axial projection of bar 23 is located on the symmetrical major axis of cell body inner chamber.

Fig. 8 gives cell body a kind of adoptable concrete structure, and cell body includes two long side plate 261, two short side plates 263 With bottom plate 262, multiple plates can form the cell body of rectangle by welding, and cell body upper end has opening B.Wherein long side plate 261 is folding Comer pieces, the bending edges in upper end with fold inward, and bending edges are provided with third through-hole 264, cited below for installing Seal 25, bottom plate 262 is used for the fixation for realizing material containing component 26.

In order to prevent the bulk material filled in material containing component 26 from spilling, as shown in Figures 2 and 3, the utility model Vibration absorber 2 also include seal 25 and pressing plate 24, the face that material containing component 26 is stretched into for moving component is provided with opening Seal 25 is pressed on opening B by B, pressing plate 24, and moving component enters the inner chamber of material containing component 26 through seal 25 In.

Length direction of the vibration absorber 2 along cell body shown in Fig. 3 is provided with three moving levers 23, and adaptably, Fig. 9 is provided A kind of structure type of seal 25, seal 25 is rectangular, can cover the opening B of material containing component 26.Close The center of sealing 25 offers three first through hole 251 on along its length, for through moving lever 23, in the week of seal 25 Enclose and open up second through hole of circle 252, the third through-hole 264 that the upper bending edges of long side plate 261 are opened up in second through hole 252 and Fig. 8 It is corresponding, seal 25 is pressed on by pressing plate 24 on material containing component 26 to realize sealing.Due to material receiving portion Part 26 is sealing space, thus can prevent that bulk material from spilling, and a large amount of dust enter material when being avoided that vibratory sieve work again In containing component 26, it will not also intake in addition.

The fixed form of each part in vibration absorber 2 is presented below, as shown in Fig. 2 vibration absorber 2 also includes first The supporting member 27 of bearing portion part 21 and second, moving component and vibrating mass are each provided on the first supporting member 21, material receiving portion Part 26 is located on the second supporting member 27.First supporting member 21 is connected with sieve nest 4, and the second supporting member 27 is connected with screen box 1, Or be a part for the structure of screen box 1, because screen box 1 can also have 1mm or so micro- amplitude in the vibratory sieve course of work, because And bulk material is in the state rocked all the time, so the shearing force of moving component insertion bulk material reduces, it is possible to increase fortune The service life of dynamic component.

According to the moving component shown in Fig. 5 and Fig. 6, moving component is used by four fixing holes 221 on installing plate 22 Fastener is arranged on the first supporting member 21.Material containing component 26 passes through bottom plate according to the cell body shown in Fig. 8, cell body The through hole opened up on 262 is arranged on the second supporting member 27 with fastener.

Further, as shown in Figures 2 and 3, vibration absorber 2 may also include shock-absorbing spring 29, and shock-absorbing spring 29 is also connected Between the first supporting member 21 and the second supporting member 27.For the embodiment, shock-absorbing spring 29 and moving component The first supporting member 21 and the second supporting are both connected to the vibration-proof structure of the interior formation of material containing component 26 for setting bulk material Between part 27, the structure of vibration absorber 2 can be simplified, space is saved.

On the basis of the original shock-absorbing spring 29 of vibratory sieve, by moving component and the interior material containing component for setting bulk material 26 vibration-proof structures formed are also provided on identical supporting member, and position is approached with shock-absorbing spring 29, so to former vibratory sieve knot Structure is changed smaller.

In figure 3, vibration absorber 2 includes three groups of mutual corresponding shock-absorbing springs 29 and moving lever 23, three moving levers 23 It is obliquely installed on the neutral plane of material containing component 26 along its length, it is preferable that the incline direction of each moving lever 23 It is identical.Set figure it is seen that neutral plane of three shock-absorbing springs 29 with material containing component 26 along its length is angled Put, because shock-absorbing spring 29 can adapt to the direction of vibration of vibrating mass by lateral deformation.

In order to adapt to the installation of shock-absorbing spring 29, moving component and material containing component 26 in such a structure type simultaneously, The first supporting member 21 and the adoptable structure type of the second supporting member 27 are provided herein.

Wherein, the first supporting member 21 includes otic placode 211, stiffener plate 212 and bearing plate 213, stiffener plate 212 and holds Predetermined angle (being to be vertically arranged in Fig. 2) is formed between weight plate 213, otic placode 211 is at least in side and stiffener plate 212 and load-bearing Plate 213 is connected, and moving component is located on bearing plate 213.In order to adapt to shock-absorbing spring 29 and material containing component 26 along length side To neutral plane angulation, bearing plate 213 includes the platy structures of two pieces of angled connections, is respectively used to install vibration damping Spring 29 and moving component, so that the formation polygonized structure of stiffener plate 212.Further, it can be set in stiffener plate 212 Mounting hole 214 is put, for connecting vibrating mass, for example, the sieve nest 4 in vibratory sieve can be just articulated in by mounting hole 214 and be subtracted On vibrating device 2.In addition, being fixed with amplitude board 14 close to the outside of shock-absorbing spring 29 in bearing plate 213, amplitude board 34 keeps vertical State, to facilitate observation.

With the bearing plate 213 in the first supporting member 21 matchingly, the second supporting member 27 is also at an angle of including two pieces The platy structure of connection, is respectively used to install shock-absorbing spring 29 and material containing component 26.

The fixed form of shock-absorbing spring 29 refers to Fig. 4, and left side is oblique in the supporting member 27 of bearing plate 213 and second On the platy structure of state (on the basis of Fig. 2), sleeve 28 is respectively connected with, and two sleeves 28 are oppositely arranged, shock-absorbing spring 29 is set Between two sleeves 28.Each sleeve 28 includes fixed part and the spring sleeved part reduced relative to connecting portion section, Gu Determine portion to be fixed on the supporting member 27 of bearing plate 213 or second by the second bolt 28A, shock-absorbing spring 29 is set in two springs On the periphery of sleeved part, and it is limited between the connecting portion of two sleeves 28, when vibratory sieve works, shock-absorbing spring 29 can Vibration is absorbed by deforming.

Secondly, the utility model additionally provides a kind of vibratory sieve, as shown in figure 1, including screen box 1, sieve nest 4 and above-mentioned implementation Vibration absorber 2 in example, sieve nest 4 is operationally as vibrating mass, and sieve nest 4 is connected by vibration absorber 2 with screen box 1.

Such a vibratory sieve is when staring and stopping operation passes through resonance region, amplitude abruptly increase, and by actual test, now resonance amplitude is about For as many as ten times of work range, while sieve nest 4 vibrates, moving component moves reciprocatingly in bulk material, dissipates The energy that friction and collision dissipative resonant between body material and between moving component and bulk material are produced, can quickly reduce and shake The mistake large amplitude produced during dynamic sieved resonance region, shortens it and becomes the steady time, while can avoid producing directly during vibration damping Severe impact, so as to extend the service life of vibratory sieve.

Preferably, vibratory sieve is linear vibrating screen.In addition, circular impact screen or ellipse can also use this reality With new vibration absorber 2, simply moving component needs, which are changed into, does circumferential movement and bulk material generation friction and collision consumption The energy that vibration is produced is dissipated, so as to realize vibration damping.

The concrete structure of the utility model linear vibrating screen is given below.As shown in figure 1, screen box 1 is main by frame structure With sealing plate composition, play support sieve nest 4 and sealed.Sieve nest 4 include side plate 10, screen cloth 3, the first support beam 5, second Beam 11 and tension part 12 are supportted, multilayer screen cloth 3 is obliquely installed and supported by support beam in the height direction, each layer of screen cloth 3 Include two sections of independent curved screens 3, two sections of screen clothes 3 one end close to each other is supported by the first support beam 5, i.e., it is every The two ends of one section of screen cloth 3 are connected with the first support beam 5 and tension part 12 respectively, and the second support beam 11 interval is located at the bottom of screen cloth 3 Portion is to provide support force, and the second support beam 11 can be fixed on side plate 10 by ring-grooved rivet 8.In addition, vibration absorber 2 is overall Be connected on side plate 10, in fig. 2, sieve nest 4 can be articulated on mounting hole 214 by side plate 10, sieve nest 4 when vibrating just Moving component can be driven reciprocating.

Preferably, vibration absorber 2 of the present utility model is set respectively in the position of two rear and front ends of side plate 10, four is set altogether Individual vibration absorber 2, can play a part of vibration damping when resonance region is crossed in vibratory sieve start and stop, and overall stress is more equal in vibration damping Weighing apparatus.The connection of vibration absorber 2 and side plate 10 is that stiffener plate 212 is fixed together with side plate 10 by ring-grooved rivet 8.

Further, vibratory sieve mainly uses vibrating motor 6 as vibration source and carrys out exciting, and vibrating motor 6 passes through exciting Beam 7 is arranged on side plate 10.Excitation beam of vibration 7 mainly includes I-beam 72 and I-beam side plate 71, and two blocks of I-beam side plates 71 are distinguished The two ends of I-beam 72 are vertically welded in, I-beam 72 is provided with mounting hole, and vibrating motor 6 is fixed on sharp with four the first bolts 9 Shake on the motor base of beam 7.I-beam side plate 71 is riveted on two blocks of side plates 10 by a circle ring-grooved rivet 8, with the first support The support beam 11 of beam 5 and second collectively constitutes the skeleton of sieve nest 4.Further, it is provided with striker plate in the highly relatively low one end of screen cloth 3 13, lower end and the screen box 1 of striker plate 13 are hinged, and upper end is fixed on screen box 1 by latch, the thing that each layer screen cloth 3 is screened out Material is individually directed respective aggregate bin.

The operation principle of such a linear vibrating screen is：It is fixed on two identical vibrating motors 6 on excitation beam of vibration 7 and is phase negative side To synchronous rotary, the eccentric blocks of 6 bands of vibrating motor when rotated centrifugal force produced by each instantaneous position along two vibrating motors 6 The component in symmetrical centre face does reciprocating linear motion, and produced centrifugal force is along in-plane where the central shaft of two vibrating motor 6 Component is cancelled out each other, and the whole sieve nest 4 being supported on shock-absorbing spring 29 does straight-line oscillation, and it is same that material is tossed on screen cloth 3 Shi Xiangqian is for linear motion, and the aggregate of plurality of specifications is screened out by each layer screen cloth 3, is excluded from discharging opening, completes screening operation.

Finally, the utility model additionally provides a kind of asphalt blending station, including the vibratory sieve described in above-described embodiment.Thus Vibratory sieve of the present utility model can effectively reduce start and stop and cross the mistake large amplitude produced during resonance region, shorten it and become the steady time, And the impact produced is smaller, it is thus possible to influence when reducing vibratory sieve start and stop because of resonant interaction to asphalt blending station stability, And extend the service life of the miscellaneous equipment such as vibratory sieve and blending station main building.

Detailed Jie has been carried out to a kind of vibration absorber provided by the utility model, vibratory sieve and asphalt blending station above Continue.Specific embodiment used herein is set forth to principle of the present utility model and embodiment, above example Explanation be only intended to help and understand method of the present utility model and its core concept.It should be pointed out that for the art For those of ordinary skill, on the premise of the utility model principle is not departed from, some change can also be carried out to the utility model Enter and modify, these are improved and modification is also fallen into the utility model scope of the claims.

Claims (19)

1. a kind of vibration absorber, it is characterised in that including material containing component (26) and moving component, the material containing component (26) bulk material is filled with, one end of the moving component is connected with vibrating mass, the other end, which extend into the material, to be held Receive in the inner chamber of part (26), the moving component can be when the Oscillation Amplitude of the vibrating mass exceedes preset value described It is reciprocating in bulk material, to pass through the friction between bulk material and between the moving component and the bulk material Dissipate the energy for vibrating and producing with collision, so as to carry out vibration damping to the vibrating mass.

2. vibration absorber according to claim 1, it is characterised in that the moving component includes moving lever (23), described One end that moving lever (23) is stretched into material containing component (26) inner chamber is provided with guide portion (232), so as to the moving lever (23) it is inserted into the gap between the bulk material.

3. vibration absorber according to claim 2, it is characterised in that the moving lever (23) accommodates relative to the material The setting angle of part (26) is consistent with the direction of vibration of the vibrating mass.

4. vibration absorber according to claim 2, it is characterised in that the outline of the guide portion (232) is back taper Or at least part sphere.

5. vibration absorber according to claim 1, it is characterised in that the bulk material is scattered solid rigid particle Group (A).

6. vibration absorber according to claim 1, it is characterised in that the moving component stretches into the material containing component (26) one end in inner chamber is free end, and the free end of the moving component is higher than institute when the vibrating mass does not vibrate State the upper surface of bulk material.

7. vibration absorber according to claim 6, it is characterised in that the free end of the moving component and the granular media thing Semi-amplitude of the distance between the upper surface of material not less than the vibrating mass in vibration.

8. vibration absorber according to claim 1, it is characterised in that the moving component stretches into the material containing component (26) one end in inner chamber is free end, the free end of the moving component when the vibrating mass does not vibrate with it is described The upper surface of bulk material.

9. vibration absorber according to claim 1, it is characterised in that described also including seal (25) and pressing plate (24) The face that material containing component (26) is stretched into for the moving component is provided with opening (B), and the pressing plate (24) is by the seal (25) it is pressed on the opening (B), the moving component enters the material containing component through the seal (25) (26) in inner chamber.

10. vibration absorber according to claim 1, it is characterised in that including multiple moving components, multiple fortune Dynamic component is in the material containing component (26) according to straight line, camber line, circle, triangle or polygonal array.

11. vibration absorber according to claim 1, it is characterised in that including multiple moving components, the material holds Part (26) of receiving is cell body, and length direction of multiple moving components along the cell body is arranged at intervals, and positioned at the groove On the central plane of body.

12. vibration absorber according to claim 1, it is characterised in that also including the first supporting member (21) and second Bearing portion part (27), the moving component and vibrating mass are each provided on first supporting member (21), the material receiving portion Part (26) is located on second supporting member (27).

13. vibration absorber according to claim 12, it is characterised in that also including shock-absorbing spring (29), the vibration damping bullet Spring (29) is connected between first supporting member (21) and second supporting member (27).

14. vibration absorber according to claim 12, it is characterised in that the moving component includes installing plate (22) and set Moving lever (23) on installing plate (22), the moving lever (23) is located at first support by the installing plate (22) On part (21).

15. vibration absorber according to claim 12, it is characterised in that first supporting member (21) includes otic placode (211), stiffener plate (212) and bearing plate (213), preset angle is formed between the stiffener plate (212) and bearing plate (213) Degree, the otic placode (211) is at least connected in side with the stiffener plate (212) and bearing plate (213), and the moving component is set On the bearing plate (213), the stiffener plate (212) is provided with mounting hole (214), for connecting the vibrating mass.

16. a kind of vibratory sieve, it is characterised in that including screen box (1), sieve nest (4) and any described vibration damping of claim 1~15 Device (2), the sieve nest (4) operationally as the vibrating mass, the sieve nest (4) by the vibration absorber (2) with Screen box (1) connection.

17. vibratory sieve according to claim 16, it is characterised in that the vibratory sieve is linear vibrating screen.

18. vibratory sieve according to claim 16, it is characterised in that the sieve nest (4) include side plate (10), screen cloth (3), First support beam (5), the second support beam (11) and tension part (12), the two ends of the screen cloth (3) respectively with described first Beam (5) and the tension part (12) connection are supportted, second support beam (11) is located at the screen cloth (3) bottom to provide support Power, the vibration absorber (2) is connected on the side plate (10).

19. a kind of asphalt blending station, it is characterised in that including any described vibratory sieve of claim 16~18.