CN1044240A - Vibration exciter - Google Patents
Vibration exciter Download PDFInfo
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- CN1044240A CN1044240A CN 89100907 CN89100907A CN1044240A CN 1044240 A CN1044240 A CN 1044240A CN 89100907 CN89100907 CN 89100907 CN 89100907 A CN89100907 A CN 89100907A CN 1044240 A CN1044240 A CN 1044240A
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- vibration exciter
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Abstract
Vibration exciter includes power transmission shaft (3), the mechanism that mutual gapped uneven thing (1,2) is installed on it and regulates mutual alignment between them.Governor motion is processed to the sleeve (4,5) of arranged concentric, and sleeve (4,5) has uneven thing (1,2) and is connected to each other by screw thread (14,15), and screw thread (14,15) is positioned on the connection surface of sleeve (4,5).Wherein, a sleeve (4) is installed on the power transmission shaft (3) rigidly, and another sleeve (5) turns and can be installed on the power transmission shaft (3) with moving axially.
Description
The invention belongs to vibrotechnique, promptly belong to the vibration exciter of vibrating device.
The present invention is mainly used in other part pressure or the later stabilization processes of machining, and in addition after part welding or the casting processing for physical dimension and the shape of stablizing other part or reduce residual stress, be used for testing the vibration excess load security and the stability of vibration influence of operation for example loaded in the vibration of aircraft.
Other applications of the present invention can be: part vibration grinding processing in addition, for example in the device of removing burr and descaling, building material industry (for example beating real cement or piling equipment), build the road (road roller that for example is used for compacting pitch prill and stone) and conveying arrangement for example vibrate conveyer or feed appliance.
The technology possibility that enlarges the vibratory equipment of being studied at present is the most pressing problem, because in this case, part process time and corresponding power consumption reduce in addition, have improved the ability of unit interval and processing, and has improved the quality of vibration processing.The most general pattern of vibration exciter that is used to produce perturbed force is a mechanical type inertia unbalance vibration driver, and its operation is the simplest and can guarantee bigger perturbed force.For example in order to regulate the amplitude of vibrating device, often need regulate the perturbed force that is produced according to the service condition of vibrating device on a large scale.
The vibration force that is produced directly is proportional to the oscillating mass size of the uneven thing of relative rotating driveshaft off-centre, the distance of this object mass centre and rotating driveshaft be rotating driveshaft speed (angular speed) square.
Because the excursion of the speed of driving shaft is bigger, cause to use and the constant-current motor of carrying voltage-regulation to combine, so or eccentric mass of change vibration exciter, or changing the distance of its mass centre to the rotating driveshaft line, this is the simplest method that changes perturbed force.
The vibration exciter of laid-open U.S. Patents SUA-956051 comprises driving shaft, two uneven things that can rotate mutually that are placed on the driving shaft, and the mechanism that regulates uneven thing mutual alignment, this mechanism is processed to the pull bar form, and on periphery, have the whole cylinder of spiral fluted relatively and distribute with one heart, one of each helicla flute and uneven thing interact.Cylinder is mounted to and can moves along axle, and pull bar is connected with cylinder.The shortcoming of described structure is that the mechanism of the uneven thing of adjusting mutual alignment is heavy and complicated.
Patent DE, C, 1297928 disclosed Centrifugal vibration drivers are in fact near the present invention, and it includes the motionless axle on the motor that is installed in rotation.On motor field frame, fixing the uneven thing of arc guider form, the other movable arc counterbalance of part form in addition is installed in this device.Uneven thing is equipped with the mechanism of the mutual alignment of regulating it, and this mechanism is processed to shaft-like, radially is subjected to resilient force at alignment pin.The not end of alignment pin enters into a through hole that runs through of the uneven thing that is in motion, like this, under the situation that moves movable uneven thing, can change the perturbed force that is produced by vibration exciter.
The shortcoming of vibration exciter essence is, the adjusting that the governor motion that uneven thing does to put mutually can not in very large range change perturbed force and guarantee its balance, and this just can not vibrate processing to all kinds of parts in addition.The shortcoming of described vibration exciter is the adjusting complexity of perturbed force, therefore to use additional special implement in the adjustment process, for example cylindrical bar or pin, it must directly be inserted in each through hole, below through hole, pass the alignment pin that to transfer to, so just increased the total time of regulating.
In addition, described vibration exciter has bigger frontal drag coefficient, because have the gap between uneven thing that moves and motor, vibration exciter noise when work is increased.
The vibration exciter of manufacturing according to the present invention, the mutual alignment governor motion of its uneven thing is simplified the structure of vibration exciter at the same time and is dwindled under the situation of adjusting time, has guaranteed that the perturbed force number range is big and has increased the uniformity of the adjusting that uneven thing distributes mutually.
Being proposed of task is to solve like this: in vibration exciter, comprise driving shaft, on this axle mutually with a gap with uneven thing can be installed mutually rotationally, and have the mechanism that can regulate their mutual alignments.According to the present invention, governor motion is processed to the cylindrical sleeve of two coaxial distributions, and sleeve has uneven thing and is connected with the screw thread of processing on their mating surfaces.At this moment, a sleeve is fixed on the power transmission shaft, and another sleeve turns and is installed on the power transmission shaft with moving axially.The coaxial distribution of sleeve can make uneven thing distribute with closed circuit form, can reduce frontal drag like this, and guarantees to reduce to grasp sound and power loss.The position that can make uneven thing with the uneven thing that is threaded is from overlapping the i.e. 180 ° of directions variations of rightabout, and this makes perturbed force change (for the determined quality of uneven thing) from maximum to zero.And realize that movable uneven thing is moving axially, and can change the mutual alignment of uneven thing, promptly regulate the numerical value of perturbed force on its gamut inner equilibrium ground.The described characteristic of vibration exciter has enlarged the processed kind of part in addition and the technology possibility of vibration exciter.
In optimum implementation of the present invention, in the flexible power of axial action, and processed cannelure to moving sleeve in threaded sleeve part, its width is greater than the distance between the adjoining ring.The existence of groove can make screw thread free from engagement, and can regulate perturbed force reposefully.The resilient force of movable uneven thing guarantees to make the uneven thing in running order reliably to be located.
According to one of invention organization plan, movable sleeve has cannelure in the place that is connected with driving shaft, and driving shaft has axial hole, in the end in hole radial groove is arranged, and the length of groove is greater than the gap between the uneven thing.And in the axial hole of driving shaft, be installed with and have the bar that is subjected to resilient force that is distributed in the radial direction through hole in the cannelure, and in the radial hole of driving shaft and bar, alignment pin is installed.This scheme of invention structure can be distributed to driving shaft on two bearings, at first this can use the uneven thing of big quality, increase perturbed force so significantly, that is to say the part in addition that to process big quality, finally enlarged the technology possibility of vibration exciter.
In another scheme of invention, movable sleeve is processed with annular groove in the place that it is connected with driving shaft, and driving shaft has axial hole, end at axial hole has the radial hole that is connected with cannelure, in this hole, alignment pin is installed, simultaneously in axial hole, interaction that is positioned at below the alignment pin and bar and the ball that can regulate mutually are installed.That uses that ball can rigidity seamlessly fixes alignment pin in groove.This scheme is used in particular for the vibration at high speed driver, because the movable gap of part in addition, the life-span of having improved vibration exciter have like this been eliminated in the location of rigidity.
Other purposes of the present invention and advantage, available following embodiment and accompanying drawing are illustrated.
Fig. 1 always schemes (longitudinal sectional view) for vibration exciter;
Fig. 2 for the A of Fig. 1 to view (having broken section);
Fig. 3 is the partial sectional view of Figure 1B part;
Fig. 4 always schemes (longitudinal sectional view) for the modification of vibration exciter;
Fig. 5 is along the longitudinal sectional view of V-V line among Fig. 4;
The organization plan figure (vertically analysing and observe) of Fig. 6 vibration exciter.
Vibration exciter includes two uneven things 1,2(Fig. 1) and the mechanism that regulates their mutual alignment, two cylindrical sleeves 4 that are installed in coaxially on the driving shaft 3 are processed in this mechanism, 5 form, in the relative zone 6,7 of sleeve 4,5 ring-types, described uneven thing 1,2 together is fixed or is removed.Sleeve 4 usefulness alignment pins 8 are fixed on the driving shaft 3 and have to add and encrust 9, movably also sleeve 5 can be installed rotationally on shell 9.Wale along sleeve 5 circumference quilt and the outer ring 10 that it together fixs or removes.
Because be installed in sleeve 5 and be rigidly attached to spring 11 effects between the sleeve 4 of axle on 3, sleeve 5 is axially receiving elastic force.From the outside, the mobility of sleeve 5 is limited by the flange 12 that is fixed on screw 13 on the axle 3.For the inner surface that transmits moment of torsion projection of 10 in the outer ring has screw thread 14(Fig. 2).Screw thread 14 can be little modulus screw thread, the band key or the like.Screw thread 14 be connected with screw thread 15 that it is processed on sleeve 5 circumference accordingly, in order from engagement, to free and to make sleeve 5 can rotate and utilize these to regulate the numerical value of perturbed force relative to sleeve 4, at described screw thread 14, processing cannelure 14a in 15,14b, 15c(Fig. 3), and make they width " l " and " s " less times greater than the width " k " of screw thread 14,15 projections.These parameters are chosen by calculating, so that the recessed of the spline of sleeve 5 screw threads 15 goes out part in groove 14a that can enter the outer ring when sleeve 4 moves and 14b.At this moment, the width of groove 14a " l " has been determined to the springing stroke of the preceding sleeve 5 of sleeve 4 bearings.For the ease of maintenance, be carved with mark 16(Fig. 2 on the circumference of figure circle 10 end faces outside), and on the circumference of sleeve 5 end faces, have the percentage scale 16a of relative maximum perturbation power.
Vibrator is worked in the following manner;
In initial state, sleeve 5 usefulness screw threads 15 are connected with the screw thread-like 14 of outer ring 10, from having formed the combined rotor with eccentric uneven thing.Spring 11 and ring flange 12 have limited the axial displacement of sleeve 5.When motor 21 rotated, uneven thing 1,2 passed to axle 3 and casing 17 with perturbed force, and the size of perturbed force is decided by the mutual alignment of uneven thing 1,2.When perturbed force need change, vibration exciter is shut down, overcome the resistance of spring 11, till sleeve 4 moving sleeves 5 are before the bearing.At this moment the projection of screw thread 15 will be among groove 14a, the 14b.Rotational sleeve 5 is procuratorial work rotor scale 16a also, determines the numerical value of desired perturbed force, unclamps sleeve 5 then.Spring 11 makes sleeve 5 be returned to initial position, and screw thread 15 is meshed with the screw thread 14 of outer ring 10, and this just gets ready for working rotor.Connect transmission device 21 then, running is proceeded.
Be a kind of organization plan of vibration exciter shown in Fig. 4, the difference of it and such scheme is that axle 3 has two bearings 24,25, and the variation that produces the machinery of regulating uneven thing 1,2 mutual alignment.The existence of two bearings 24,25 can increase the quality of uneven thing 1,2, and this has obviously increased the technology that perturbed force promptly enlarged vibration exciter may.Sleeve 5 moves to the outlet of screw thread 15 with screw thread 14 places of being meshed vertically, promptly by the purposes uneven thing 1 identical with the groove 14a of first scheme, how many gaps between 2 " l " wants bigger than the width " k " of screw thread projection, and by the ends restrict of sleeve 4, sleeve has shell 26.The sleeve 5 that is in the operating position is determined by following form.Be processed with axial hole 27 along axis with transmission device 21 rightabout power transmission shafts 3.In its inside bar 28 is installed, end at bar 28 has termination 29, and have radial hole 30 at its other end, radial location pin 31 is installed in hole 30, alignment pin 31 is also by the existing radially groove 32 in the power transmission shaft 3, and interact with endless groove 33, groove 33 is formed on 26 the surface with 3 sleeve that are connected 5.Bar 28 is subjected to being positioned at the effect of spring 11 of the bore hole 34 of power transmission shaft 3.The parameter of described part is in addition determined by the exit condition of screw thread 15 projections that are meshed with screw thread 14 and the possibility of sleeve 5 rotations.The length in hole 27 is determined by the condition of the distribution of radial slot 32, to guarantee that alignment pin 31 and cannelure 33 are the interaction of sleeve 5.The width of groove 32 is processed to guarantee alignment pin 31 unobstructed leading threads to passing through, and its length d should guarantee the required stroke l of sleeve 5.The length of alignment pin 31 is decided radially interval relatively freely distribution of groove 33 by it, and the width of groove 33 is decided by guaranteeing that alignment pin 31 moves freely in its inside.And the degree of depth will enough make the shoulder of groove 33 and alignment pin 31 interact.
For bar 28 is assembled mutually with alignment pin 31, alignment pin 31 promptly is installed in the hole 30 of bar 28, in shell 26, processed fabrication hole 35(Fig. 5), hole 35 overlaps with cannelure 33, and diameter is determined by the calculating of the free travel of alignment pin 31.After assembling, hole 35 usefulness plug screws, 36 sealings.For the ease of the rotation of sleeve 5, on its extension, processed groove 37(Fig. 4).
The bearing 19 usefulness cover plates 38 of bearing 24 are fixing, and the chap part 39 of bearing 20 usefulness of bearing 25 axle 3 covers, and can prevent that like this bearing from falling into dust and lubricating oil is dished out from their centres.
The working forms of vibration exciter is as follows.Screw thread 14 is connected with 15 in the operating position, because sleeve 5 is used alignment pin 31 when this position, bar 28 and spring 11 limit.Under the situation of getting rid of transmission device 21, the rotation of uneven thing 1,2 guarantees to axle 3, and transmits perturbed force by bearing 24,25 to casing 17.
When needs change the perturbed force size, cut off motor 21, vibration exciter is shut down.In order to transform to new power, the resistance that overcomes spring 11 is exerted pressure to head 29, carriage release lever 28, at this moment enter into groove 33 interactions of alignment pin 31 with the shell 26 in hole 30, while moving sleeve 5, make screw thread 15 from the engagement of the screw thread 14 of outer ring 10 free the end face bearing that arrives sleeve 4 before, promptly the projection of screw thread 15 enters into gap " l ", and sleeve 5 can be rotated.In the ledge of the sleeve 5 at the head 29 of dwang 28 or groove 37 places, torsion sleeve 5, in order to determine desired power, control is rotated according to scale 16a.Decontrol after the head 29, spring 11 makes bar 28 be in original state, and guide jaw 31, sleeve 5 make its screw thread 15 be meshed with the screw thread 14 of outer ring 10, and forms rotor, for operation is got ready.
Another embodiment of vibration exciter as shown in Figure 6.It and the structure difference of the said mechanism of regulating uneven thing 1,2 mutual alignment.With bar 28 interactional balls 40 be installed in power transmission shaft 3 axial hole 27 alignment pin below.Therefore hole 27 is threaded adjusting device 41, and is threaded adjusting device 42 on bar 28.For alignment pin, in power transmission shaft 3 inside one radial hole 43 is arranged, its diameter guarantees that alignment pin 31 moves freely, and hole 43 is communicated with axial hole 27.
The part parameter in addition of vibration exciter is chosen by such principle, promptly guarantees screw thread 14,15 engagements possibility separately.Therefore should guarantee that the axial stroke of sleeve 5 is a bit larger tham the width of screw thread 14.The length of alignment pin 31 for example equals the radius of axle 3 and the degree of depth sum of groove 33 by determining with the shoulder the best use of of endless groove 33.Can be processed into cone or hemispherical with the end face of ball 40 interactional alignment pins.The length of bar 28, the quantity of ball and diameter, the diameter in hole 27 is chosen with alignment pin 31 interactional conditions by assurance ball 40.The condition that the diameter of ball 40 is flowed by assurance is chosen, and it less than hole 27 diameter 4-5 doubly.The equal diameters in the diameter of alignment pin 31 and hole 27.In order to determine the position of alignment pin 31, on axle 3, should have mark 44, this is essential to improving operation.Outer end at sleeve 5 column parts has flange projection 45, and this makes with 5 operations of movable sleeve.Very brisk.
The work characteristics of described scheme is the adjusting program difference of perturbed force.
When needs change the numerical value of perturbed force, stop motor 21.For to new power conversion, on axle 3, be carved with mark 44, to show alignment pin 31 upright position in the above.When reversing head 29, screw out swingle 28, increased the volume in the hole 27 that is occupied by ball 40.Last ball rolls in hole 27, and alignment pin 31 descends from cannelure 33, and sleeve 5 is freed.During moving sleeve 5, sleeve 5 moves along the axis of axle 3 in projection 45, by with the engagement of the screw thread 14 of outer ring 10 in derive screw thread 15, and rotate it.Control is rotated according to scale 16a, facing to mark 16, determines needed index, and moves to opposite shaft orientation, and screw thread 15 is meshed with screw thread 14.For fixing given position, rotation head 29 is tightened bar 28, thereby begins to make ball 40 intensive, then alignment pin 31 is pressed to cannelure 33 it is rigidly fixed in this position, has eliminated moving axially of sleeve 5.
When connecting motor 21, uneven thing 1,2 guarantees to transmit perturbed force by bearing 24 to axle 3 and casing 17.
Claims (4)
1, a kind of vibration exciter, include power transmission shaft (3), mutually gapped and can injustice be installed rotationally mutually and separate thing (1 on it, 2), uneven thing (1,2) have the mechanism of the mutual alignment of regulating it, it is characterized in that governor motion is processed into two cylindrical sleeves that are discharged to one heart (4,5), sleeve (4,5) have uneven thing (1,2) between them by being formed on sleeve (4,5) the lip-deep screw thread (14 of connection, 15) link to each other, a sleeve (4) is connected on the power transmission shaft (3) rigidly simultaneously, also can be connected with power transmission shaft (3) and another sleeve (5) is rotatable with moving axially.
2, vibration exciter according to claim 1, it is characterized in that movably sleeve (5) is axially receiving elastic force, and screw thread (14 is arranged, the position of sleeve 15) (4,5) has processed cannelure (14a, 14b, 15c), their width is greater than adjacent grooves (14a, 14b, 15c) distance between.
3, vibration exciter according to claim 1, it is characterized in that, movable sleeve (5) is being processed with cannelure (33) with power transmission shaft (3) connection, and power transmission shaft (3) has axial hole (27) in its radially fluted (32) terminal, the length d of groove (32) is greater than uneven thing (1,2) gap between (1), the bar that receives elastic force (28) that has radial direction through hole (30) is installed in the axial hole (27) of turning cylinder (3) simultaneously, through hole (30) is positioned at cannelure (33) position, and in the radial hole (32,30) of power transmission shaft (3) and bar (28), alignment pin (31) is installed.
4, according to the said vibration exciter of claim 1, it is characterized in that, movable sleeve (5) is processed with cannelure (33) in it and power transmission shaft (3) connection, and power transmission shaft (3) has the axial hole (27) that its terminal has radial hole (32), hole (32) links to each other with cannelure (33), alignment pin (31) is installed in hole (32), simultaneously, below the alignment pin in the axial hole of power transmission shaft (3) (31), adjusting rod interact with each other (28) and ball (40a) are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100907 CN1044240A (en) | 1989-01-20 | 1989-01-20 | Vibration exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100907 CN1044240A (en) | 1989-01-20 | 1989-01-20 | Vibration exciter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1044240A true CN1044240A (en) | 1990-08-01 |
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ID=4854065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100907 Pending CN1044240A (en) | 1989-01-20 | 1989-01-20 | Vibration exciter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044240A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961710B (en) * | 2008-10-06 | 2012-11-14 | 宝马格有限公司 | Device for generating circular oscillation or directional oscillation |
| CN106877562A (en) * | 2017-01-20 | 2017-06-20 | 广西大学 | A kind of torsional oscillation loading device excited by eccentric motor |
-
1989
- 1989-01-20 CN CN 89100907 patent/CN1044240A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961710B (en) * | 2008-10-06 | 2012-11-14 | 宝马格有限公司 | Device for generating circular oscillation or directional oscillation |
| CN106877562A (en) * | 2017-01-20 | 2017-06-20 | 广西大学 | A kind of torsional oscillation loading device excited by eccentric motor |
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| WD01 | Invention patent application deemed withdrawn after publication |