CN105805224B - A kind of belt vibration damping device - Google Patents
A kind of belt vibration damping device Download PDFInfo
- Publication number
- CN105805224B CN105805224B CN201610328670.5A CN201610328670A CN105805224B CN 105805224 B CN105805224 B CN 105805224B CN 201610328670 A CN201610328670 A CN 201610328670A CN 105805224 B CN105805224 B CN 105805224B
- Authority
- CN
- China
- Prior art keywords
- belt
- wheel
- weakening
- weakening wheel
- damping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention relates to belt vibration damping device, including two groups of weakening wheel assemblies, weakening wheel assembly includes weakening wheel and weakening wheel wheel carrier；One group of weakening wheel assembly is arranged on the inner side of protective cover skeleton angle steel above slack side by upper bracket, and another group of weakening wheel assembly is connected by lower carriage with the corresponding channel-section steel top surface that unit pry bracket installs protective cover；Weakening wheel and one group of belt top surface adjacent thereto keep δ parallel clearance；Weakening wheel includes weakening wheel body, locks dust-proof nut, dirt-proof boot, deep groove ball bearing, wheel shaft and bolts at axle end；Weakening wheel wheel carrier includes two pieces identical wheel carrier vertical panel, wheel carrier horizontal connecting plate and hold-down bolt.After such structure, the large-scale compressor of belt driving is thoroughly solved because motor shaft and boss rod centre-to-centre spacing are larger, because speed or load change trigger resonance to cause the problem that belt is acutely beated in transmission process, make compressor even running, there is that simple in construction, effect is obvious, with low cost and safe and reliable.
Description
Technical field
The present invention relates to the power transmission field of large-scale compressor, more particularly to a kind of belt vibration damping device.
Background technology
In universal machine field, the power transmission of large-scale mesohigh compressor, commonly use what belt transmission drove with direct connection
Two kinds of patterns, both type of drive respectively have advantage and disadvantage and applicable situation.
Direct connection drive efficiency is high（Efficiency factor is about 99%）, it has a wide range of application, especially high-power（Such as 1000KW grades)
In field it is non-it do not belong to.Large-scale compressor has pulsating nature due to the active force acted on crank-pin, and direct connection driving does not allow to adopt
With flexible connection, to avoid triggering twisting vibration, it is necessary to use rigid coupling.Therefore it is required that motor shaft and powered pressure
Contracting owner's axle has very high-precision coaxial degree, and radial direction additional force otherwise occurs, accelerates abrasion, reduces transmission efficiency.Main frame
Being driven with motor direct connection causes Compressor Group width to increase, profile ultra-wide, transport difficult.It is the problem of to solve transport, many
Assembled using separated user scene of transporting.Installation cost is high, requires very high to mounting foundation plinth, also to inspect periodically school
Just, it is ensured that above-mentioned axiality is in allowed band.In addition direct connection driving can only adapt to main frame by electromotor series are changed
Rotating speed, change rotating speed is relatively difficult.
Belt drives, and is that efficiency factor is 97% using very wide type of drive, changes rotating speed easily, is easy to pry bracket whole
Body is transported with installing, a small amount of deformation in basis, does not constitute influence, the radial load that belt driving is produced to main shaft, Ke Yizeng on transmission
Plus main shaft bearing is born, using very wide.But, for large-scale compressor, such as M types type, motor shaft and compressor main shaft
（The main shaft of bent axle）Centre-to-centre spacing is often longer, increases the length of belt, and the natural frequency of vibration declines, the natural frequency of vibration and master when belt
The rotating speed of machine can produce resonance when close or equal.Once producing resonance, belt is acutely beated, and amplitude is very big.The vibration of belt
（Bounce）That section between belt and two-wheeled tangential contact point is occurred over just, its natural frequency of vibration and the length of this section are inversely proportional,
It is inversely proportional with the quality of belt, the internal stress with this section of belt（Pulling force）It is directly proportional.Belt self-vibration frequency be not it is changeless,
But scan within the specific limits.When compressor loads or speed-raising, pulling force rises in the belt of driving side, and self-vibration frequency rises,
And the belt internal tension of slave end declines, self-vibration frequency declines；When compressor unloading or deceleration, situation contrast.Therefore often
Often there is the situation that driving side belt and slave end belt are alternately beated.On the large-scale compressor of frequency conversion drive, such case
It is especially prominent.Belt is very strong because of the bounce that resonance is produced, and amplitude is very big, can overturn belt, the belt of high-speed motion due to
Bounce amplitude greatly with protective cover friction, cause belt to burn, belt and motor wheel skidding frictional heating burn out motor.Even if not producing
Raw such major accident, belt resonance bounce can also greatly shorten the working life of belt, increase energy consumption, prevent compressor from just
Often work.Certain foreign brands into Chinese market is solve this problem, using multi-joint belt.Because multi-joint belt quality is big,
The natural frequency of vibration eliminates covibration the bottom of compared with.But multi-joint belt, expensive, installation difficulty, and usually in order to meet driving work(
Rate needs, additional single belt, and vibration is still present, and user does not receive., should in the case where can not thoroughly solve this problem
Manufacturer uses direct connection driving instead.But because compressor its rotating speed of having shaped can not arbitrarily change, gearbox can only be set up to solve.This
Act makes compressor cost increase, energy consumption increase, although compression function normal work, but Fei Jiace.
The bounce of belt only occur in driving while and it is driven while both sides belt and two belt wheel tangential contact points between one section
Ab, cd section in belt, such as Fig. 1；Obviously, the belt in the range of cornerite being in contact with two belt wheels will not beat, but meeting
Produce creep.Drive while and it is driven while belt and two belt wheel tangential contact points between one section of belt, its natural frequency of vibration with it is each
From inner tensions（Pulling force）It is directly proportional, quality and length with itself（Length between i.e. two contact point of contacts）It is inversely proportional.Although,
Its length and quality approximately constant, but its internal tension force（Pulling force）It is change.When engine speed is lifted or is loaded, driving
The belt tension increase on side, rises its natural frequency of vibration, driven side declines its tension force due to the creep of cornerite scope inner belt,
Its natural frequency of vibration declines.Therefore compressor in the process of running, belt driving while and it is driven while frequency also change therewith.When
Belt frequency (though driving while and it is driven while) change, resonance just occurs when close or consistent with the speed of mainshaft.
Belt is acutely beated when resonance occurs, and this is for output tolerance（Load）The compressor of the either frequency conversion drive changed greatly is outstanding
Its is serious.
The rotating speed of large-scale compressor（By taking M types as an example）Generally in the range of 500 turns per minute~980 turns, its frequency is
In the range of 8.3Hz~16.3Hz.M types compressor is more due to columns（Such as 4 row, 6 row）, between motor wheel shaft and main shaft distance compared with
It is long, therefore, belt driving while and it is driven while and two belt wheel tangential contact points between distance it is longer, reduce driving while and it is driven while
The natural frequency of vibration of belt, makes the natural frequency of vibration scope and the speed of mainshaft of belt（Frequency）Scope coincides or partly overlapped.In addition,
Do not allow yet excessively tense or loosen belt make internal tension improve or reduce so that avoid resonance；Main frame is raised in someone's design,
Motor is placed in the obliquely downward of main wheel, reduces two center distance of belt wheel, although can effectively eliminate belt resonance, but for large-scale
For compressor, this can bring center of gravity to raise, and fill, tear open, the shortcomings of maintenance difficult, manufacturing cost rise, it is clear that not proper, therefore very
Rare people uses.So, M types large-scale compression using belt drive when, because centre-to-centre spacing is longer, its drive while and it is driven while skin
Band natural frequency of vibration scope is just overlapping with engine speed frequency range portion.For example, M types four arrange opposed balance oilless (oil free) compressor,
Main motor current 260KW, 600 revs/min of rotating speed（That is 10HZ), using import V-type V belt, centre-to-centre spacing A is 2585mm, in rule
Under fixed tension, the actual measurement natural frequency of vibration is 11~12Hz.It can be seen that, the natural frequency of vibration of belt and the rotating speed of main frame（Frequency）Very
It is close.When the rotating speed of compressor changes with load, the natural frequency of vibration of belt changes therewith, (is whether driven once there is belt
It is dynamic while or it is driven while) natural frequency of vibration scanning arrive main frame frequency when, resonance occurs, and belt fierceness bounce, amplitude is equal with energy
It is very big, and can not stop.At this moment the frequency that only shutdown reduction of speed makes belt can just make amplitude lower elimination altogether away from resonance point
Shake phenomenon.Belong to disorderly closedown for compressor, this does not allow.
Therefore, design a kind of simple and reliable, can effectively eliminate the resonance in the driving of large-scale compression captain's centre-to-centre spacing belt,
Ensure that the vibration damping device of belt smooth drive is particularly important.
The content of the invention
The technical problem to be solved in the present invention is a kind of belt vibration damping device of design, and the resonance for solving prior art presence is asked
Topic.
In order to solve the above technical problems, the belt vibration damping device of the present invention includes two groups of weakening wheel assemblies, the weakening wheel
Component includes weakening wheel and weakening wheel wheel carrier；The top that one group of weakening wheel assembly is arranged on slack side by upper bracket is protected
The inner side of cover skeleton angle steel；Another group of weakening wheel assembly installs the corresponding channel-section steel top surface of protective cover by lower carriage and unit pry bracket
It is connected；The top surface of the weakening wheel and one group of belt adjacent thereto keeps δ parallel clearance；The weakening wheel includes weakening
Wheel body, the dust-proof nut of locking, dirt-proof boot, deep groove ball bearing, wheel shaft and bolts at axle end；It is identical that the weakening wheel wheel carrier includes two pieces
Wheel carrier vertical panel, wheel carrier horizontal connecting plate and hold-down bolt；The weakening wheel body is in hollow circular cylinder, weakening wheel body both sides
Chamber installs deep groove ball bearing provided with bearing mounting hole, and is sleeved on the axle journal of wheel shaft；The axle journal of the wheel shaft is installed on two ends
Deep groove ball bearing hole in, the dirt-proof boot is sleeved on the outside axle journal at wheel shaft two ends, and its inner face props up deep groove ball bearing
Inner ring outer face, the inner ring inner face of deep groove ball bearing is pressed on the shoulder of wheel shaft by hold-down bolt, packing ring and dirt-proof boot
On.In weakening wheel body both sides inner chamber, the outside of bearing mounting hole is provided with the dust-proof nut of threaded coaxial hole installation locking, and its effect is
At the interior shoulder that the outer shroud axial restraint of bearing is pressed on to weakening wheel body bearing mounting hole；The wheel carrier vertical panel is provided with coaxial
Hole, the dirt-proof boot at wheel shaft two ends it is cylindrical in the coaxial aperture of vertical welding plate.
Further, the weakening wheel assembly be arranged on belt and motor pulley and main frame belt pulley tangential contact point it
Between distance the corresponding protective cover of midpoint and pry bracket on.
Further, the top surface parallel clearance δ of the weakening wheel and one group adjacent thereto of belt is belt stable operation
When disturb 1.5~2 times of average amplitude.
Further, the axial length of the weakening wheel body is more than the width of belt, and weakening wheel body both sides exceed skin
Band, must grazing weakening wheel during ensuring that belt is beated.
Further, the inner side end of the dust-proof nut of locking pushes down the outer face of deep groove ball bearing outer shroud, makes outer shroud
Inner face is close on the inner side end of weakening wheel body bearing mounting hole.
Further, the cylindrical of the dust-proof nut of locking is provided with annular groove, and work has multiple spiral shells on ring plate end face
Pit, tightens soket head cap screw, makes nut ring plate axially produce micro deformation to clamp and be locked at the interior spiral shell of weakening wheel body
On tooth, also screw lock can be replaced with locking thread glue.
Further, the dust-proof nut inner hole of the locking has a ladder annular groove, it is cylindrical with dirt-proof boot on annular groove convex-concave it is corresponding,
Radially with being axially equipped with uniform gap, labyrinth structure is formed, effectively can prevent dust from entering bearing, without increasing rotation resistance
Power, makes rotation light.
Further, the wheel carrier horizontal connecting plate is provided with long waist shaped mounting hole, the installation for belt weakening wheel assembly
Connection, long waist shaped hole meets the regulation of weakening wheel axial location, weakening wheel two ends is stretched out one group of installation belt both sides（Width side
To）Equal length, also, by increasing and decreasing the packing ring of fastening bolt, make weakening wheel bus and one group of belt top surface keep δ's flat
In the ranks gap.
Further, the weakening wheel body is made up of light material, such as aluminium, nylon；The dust-proof nut of locking
It is made up of light material, such as aluminium.
Further, the deep groove ball bearing is totally-enclosed grease lubricating bearing.
Further, wheel carrier vertical panel is welding structure, and the coaxial aperture of the vertical welding plate in both sides is separated into along horizontal center line
Two parts, compress dirt-proof boot by 4 hold-down bolts.Due to dirt-proof boot and axle sleeve that vertical panel mounting hole matches be designed to it is thin
Wall, and its it is cylindrical have be deformed together compressing wheel shaft after certain magnitude of interference, compression.Therefore, wheel shaft does not turn during work, disappears
Shake and wheel body, the outer shroud of deep groove ball bearing, dirt-proof boot and lock dust-proof nut and rotate together.Because the part of rotating part is used
Light material, labyrinth clearance is dust-proof, therefore rotation is light, and rotary inertia is small, and staring torque is small.
The operation principle of the belt vibration damping device of the present invention：
Loading, unloading of the compressor in startup, shutdown and running, will all cause belt to drive side and driven flaw-piece
Band internal stress（Pulling force）Change, and the natural frequency of vibration of belt and belt internal tension（Pulling force）It is directly proportional, when compressor is being opened
It is dynamic, shut down, loading, in the speed regulation process of unloading and frequency conversion drive, the pulling force in belt all changes, and this means that accordingly
The natural frequency of vibration change, once frequency scanning arrive main frame rotational frequency when, resonance occur.Belt is acutely jumped when resonance occurs
Dynamic, its amplitude maximum is located at the intermediate point of belt and the tangent contact length of two-wheeled.By two groups of structure identical weakening wheels by
Weakening wheel wheel carrier be arranged on driving while with it is driven while the corresponding protective cover of midpoint and pry bracket on；The cylindrical bus of weakening wheel and skin
Tape motion direction is vertical, parallel with the top surface of one group of belt, and leaves gap delta with belt top surface.So, when the self-vibration of belt
When scanning arrives close or consistent with main frame rotational frequency resonance bounce occurs for frequency, due to having the presence of weakening wheel, belt
Firm take-off just with weakening wheel grazing, in grazing moment, equivalent to the midpoint increasing between belt and two belt wheel tangential contact points
A contact point, belt contacts are added（Support）Length bust 1/2 between point, makes the natural frequency of vibration abrupt transients of belt, increases
It is big to destroy resonance condition by about one time, eliminate covibration.Because weakening wheel rotating part uses light material system
Into, and rotate flexible, rotated rapidly after resistance very little, with belt grazing, the speed of related movement with belt grazing position is very low,
Contact stress also very little, will not form fretting wear, power consumption is small, can be neglected.When belt is driven into stable fortune
OK, though belt has a small perturbation bounce, amplitude very little, not with or it is even with weakening wheel grazing, weakening wheel be in it is static or
Rotary state once in a while.So, do not change the basic structure of driven compressor system, do not change the situation of compressor design parameter yet
Under, the original state moment resonated in belt, contact point is increased by weakening wheel, made in the natural frequency of vibration mutation formula of belt
Rise, destroy or eliminate belt resonance condition.
Beneficial effects of the present invention：After such structure, thoroughly solve belt driving large-scale compressor due to
Motor shaft and boss rod centre-to-centre spacing are larger, because the change of speed or load triggers resonance to cause the violent jump of belt in transmission process
Dynamic problem, makes compressor even running, there is that simple in construction, effect is obvious, with low cost and safe and reliable.
Brief description of the drawings
The embodiment to the present invention is further elucidated below in conjunction with the accompanying drawings.
Fig. 1 is belt vibration damping device structural representation of the invention；
Fig. 2 is the A-A direction views in Fig. 1；
Fig. 3 is the belt weakening wheel and wheel carrier structure figure of the belt vibration damping device of the present invention；
Fig. 4 is the A direction views in Fig. 3.
Embodiment
Further illustrated with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.The belt vibration damping device of the present invention includes two groups of weakening wheel groups
Part, the weakening wheel assembly includes weakening wheel 3 and weakening wheel wheel carrier 2；One group of weakening wheel assembly is arranged on belt by upper bracket 1
The inner side of the top protective cover skeleton angle steel on driven side, another group of weakening wheel assembly installs anti-by lower carriage 4 and unit pry bracket
The corresponding channel-section steel top surface of shield is connected；The weakening wheel 3 keeps parallel of δ with one group of belt top surface corresponding thereto
Gap.The weakening wheel 3 includes weakening wheel body 3-1, locks dust-proof nut 3-2, dirt-proof boot 3-3, deep groove ball bearing 3-4, wheel shaft 3-5
With bolts at axle end 3-6；The weakening wheel wheel carrier 2 include two pieces identical wheel carrier horizontal connecting plate 2-1, wheel carrier vertical panel 2-2 and
Hold-down bolt 2-3.The weakening wheel body 3-1 is hollow circular cylinder, and weakening wheel body 3-1 both sides inner chamber is provided with bearing mounting hole, interior
Deep groove ball bearing 3-4 is filled, and is sleeved on wheel shaft 3-5 axle journal.Wheel shaft 3-5 axle journal is installed on the deep groove ball bearing hole at two ends
It is interior；The dirt-proof boot 3-3 is sleeved on the outside axle journal at wheel shaft 3-5 two ends, and its inner face props up deep groove ball bearing 3-4 inner ring
Outer face, deep groove ball bearing 3-4 inner ring inner face is pressed on wheel shaft 3-5 by hold-down bolt 2-3, packing ring and dirt-proof boot 3-3
Shoulder on.In weakening wheel body 3-1 both sides inner chamber, the outside of bearing mounting hole is provided with threaded coaxial hole, and installation locking is dust-proof in hole
Nut 3-2, its effect is pressed on the outer shroud axial restraint of bearing at the interior shoulder of weakening wheel body bearing mounting hole.The wheel
The vertical welding plate 2-2 in frame two ends is provided with coaxial aperture, and the dirt-proof boot 3-3's at wheel shaft 3-5 two ends is cylindrical installed in the coaxial of vertical welding plate
In hole.
Further, the weakening wheel assembly be arranged on belt and motor pulley and main frame belt pulley tangential contact point it
Between distance midpoint.As shown in figure 1, the midpoint that the weakening wheel assembly in the present embodiment is arranged on ab and cd sections is corresponding anti-
On shield and pry bracket.
Further, the top surface parallel clearance δ of the weakening wheel 3 and one group of belt corresponding thereto transports for belt is stable
1.5~2 times of average amplitude are disturbed during row.The present embodiment is preferred, and the top surface of weakening wheel 3 and one group of belt adjacent thereto puts down
Row gap delta is 8~10mm.
Further, the axial length of the weakening wheel body 3-1 is more than the width of belt, and weakening wheel body 3-1 both sides are equal
, must grazing weakening wheel 3 during ensuring that belt is beated beyond belt.
Further, the end face of the dust-proof nut 3-2 of locking pushes down the outer face of deep groove ball bearing 3-4 outer shrouds, makes outer
Ring inner face is close on the inner side end of weakening wheel body 3-1 bearing mounting holes.
Further, the cylindrical of the dust-proof nut 3-2 of locking is provided with annular groove, and work has multiple on ring plate end face
Screwed hole, tightens soket head cap screw, nut ring plate is axially produced micro deformation and is clamped and be locked at the interior of weakening wheel body 3-1
On thread.
Further, the dust-proof nut 3-2 endoporus of the locking has ladder annular groove, with dirt-proof boot 3-3 it is cylindrical on annular groove it is convex
Recessed correspondence, radially with being axially equipped with uniform gap, forms labyrinth structure, effectively can prevent dust from entering bearing, without increasing
Plus rotational resistance, rotation is easily.
Further, the wheel carrier horizontal connecting plate 2-1 is provided with long waist shaped mounting hole, the peace for belt weakening wheel assembly
Load connects, and long waist shaped hole meets the regulation of weakening wheel axial location, the two ends of weakening wheel 3 is stretched out one group of installation belt both sides（It is wide
Spend direction）Equal length, and can protect weakening wheel bus and one group of belt top surface by increasing and decreasing the packing ring of fastening bolt
Hold δ parallel clearance.
Further, the weakening wheel body 3-1 is made up of light material, such as aluminium, nylon；The dust-proof spiral shell of locking
Female 3-2 is made up of light material, such as aluminium.
Further, the deep groove ball bearing 3-4 is totally-enclosed grease lubricating bearing.
Further, wheel carrier vertical panel 2-2 is welding structure, and the coaxial aperture of the vertical welding plate in both sides is separated along horizontal center line
Into two parts, dirt-proof boot 3-3 is compressed by 4 hold-down bolt 2-3.Matched due to dirt-proof boot 3-3 and vertical panel mounting hole
Axle sleeve is designed to thin-walled, and has and be deformed together compressing wheel shaft 3-5 after certain magnitude of interference, compression.Therefore, wheel shaft during work
Do not turn, weakening wheel body 3-1, deep groove ball bearing 3-4 outer shroud, dirt-proof boot 3-3 and the dust-proof nut 3-2 of locking are rotated together.Due to
The part of rotating part uses light material, and labyrinth clearance is dust-proof, therefore rotation is light, and rotary inertia is small, and staring torque is small.
The operation principle of the belt vibration damping device of the present embodiment：
Loading, unloading of the compressor in startup, shutdown and running, will all cause belt to drive side and driven flaw-piece
Band internal stress（Pulling force）Change, and the natural frequency of vibration of belt and belt internal tension（Pulling force）It is directly proportional, when compressor is being opened
It is dynamic, shut down, loading, in the speed regulation process of unloading and frequency conversion drive, the pulling force in belt all changes, and this means that accordingly
The natural frequency of vibration change, once frequency scanning arrive main frame rotational frequency when, resonance occur.Belt is acutely jumped when resonance occurs
Dynamic, its amplitude maximum is located at the intermediate point of belt and the tangent contact length of two-wheeled.By two groups of structure identical weakening wheels 3 by
Weakening wheel wheel carrier 2 be arranged on belt drive while with it is driven while on the outside of the corresponding protective cover of midpoint and pry bracket on, outside weakening wheel 3
Circle bus is vertical with corresponding belt movement direction, parallel with the top surface of one group of belt, and leaves gap delta with belt top surface.
So, when the natural frequency of vibration of belt arrives close or consistent with main frame rotational frequency Yi Dan scanning, occurs resonance bounce, due to having
The presence of weakening wheel 3, the firm take-off of belt just with the grazing of weakening wheel 3, in grazing moment, equivalent in belt and two belt wheel phase cut-graftings
Midpoint between contact adds a contact point, belt contacts（Support）Point between length bust 1/2, make belt from
Vibration frequency abrupt transients, increase by about one time, destroy resonance condition, eliminate covibration.Due to the rotation section of weakening wheel 3
Divide and be made of light material, and rotate flexible, rotated rapidly after resistance very little, with belt grazing, with belt grazing position
Speed of related movement it is very low, contact stress also very little will not form fretting wear, and consumption power is small, can be neglected.When
Belt is driven into stable operation, though belt has a small perturbation bounce, amplitude very little, not with or even touched with weakening wheel 3
Wipe, weakening wheel 3 is in static or rotary state once in a while.So, do not change the basic structure of driven compressor system, do not change yet
In the case of compressor design parameter, the bud moment resonated in belt, contact point is increased by weakening wheel 3, made
The natural frequency of vibration mutation formula of belt rises, and destroys or eliminate belt resonance condition.
The belt vibration damping device of the present embodiment thoroughly solves the large-scale compressor of belt driving due to motor shaft and main frame
Axle centre-to-centre spacing is larger, because the change of speed or load triggers the problem for the violent bounce for causing belt of resonating in transmission process, makes
Compressor even running, there is that simple in construction, effect is obvious, with low cost and safe and reliable.Through arranging 260kW in M types 4
Compressor is tested, and effectively eliminating resonance causes the problem of belt is acutely beated, it is ensured that compressor operating is steady.
Many details are elaborated in the above description to fully understand the present invention.But above description is only
Presently preferred embodiments of the present invention, the invention can be embodied in many other ways as described herein, therefore this
Invention is not limited by specific implementation disclosed above.Any those skilled in the art are not departing from the technology of the present invention simultaneously
In the case of aspects, all make many possible to technical solution of the present invention using the methods and techniques content of the disclosure above
Change and modify, or be revised as the equivalent embodiment of equivalent variations.Every content without departing from technical solution of the present invention, according to this
The technical spirit of invention still falls within skill of the present invention to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of the protection of art scheme.
Claims (8)
1. a kind of belt vibration damping device, it is characterised in that：Including two groups of weakening wheel assemblies, the weakening wheel assembly includes weakening wheel
（3）With weakening wheel wheel carrier（2）；One group of weakening wheel assembly passes through upper bracket（1）Installed in the top protective cover bone of slack side
The inner side of frame angle steel, another group of weakening wheel assembly passes through lower carriage（4）The corresponding channel-section steel top surface of protective cover is installed with unit pry bracket
It is connected；The weakening wheel（3）δ parallel clearance is kept with the top surface of one group of belt adjacent thereto；The weakening wheel（3）Bag
Include weakening wheel body（3-1）, lock dust-proof nut（3-2）, dirt-proof boot（3-3）, deep groove ball bearing（3-4）, wheel shaft（3-5）And shaft end
Bolt（3-6）；The weakening wheel wheel carrier（2）Including two pieces identical wheel carrier horizontal connecting plate（2-1）, wheel carrier vertical panel（2-2）
And hold-down bolt（2-3）；The weakening wheel body（3-1）For hollow circular cylinder, weakening wheel body（3-1）Pacify provided with bearing both sides inner chamber
Fill hole and deep groove ball bearing is installed（3-4）, and it is sleeved on wheel shaft（3-5）Axle journal on；Wheel shaft（3-5）Axle journal be installed on two ends
In bearing hole；The dirt-proof boot（3-3）It is sleeved on wheel shaft（3-5）On the outside axle journal at two ends, its inner face props up deep-groove ball axle
Hold（3-4）Inner ring outer face, deep groove ball bearing（3-4）Inner ring inner face by hold-down bolt（2-3）, packing ring and dirt-proof boot
（3-3）It is pressed on wheel shaft（3-5）Shoulder on；In weakening wheel body（3-1）Both sides, the outside of inner chamber bearing mounting hole are provided with coaxial
The dust-proof nut of screwed hole installation locking（3-2）；The wheel carrier vertical panel（2-2）Provided with coaxial aperture, wheel shaft（3-5）Two ends it is dust-proof
Set（3-3）It is cylindrical in the coaxial aperture of vertical welding plate.
2. belt vibration damping device according to claim 1, it is characterised in that：The weakening wheel assembly is arranged on belt and electricity
Between machine belt pulley and main frame belt pulley tangential contact point on the corresponding protective cover of midpoint and pry bracket of distance.
3. belt vibration damping device according to claim 1, it is characterised in that：The weakening wheel（3）With adjacent thereto one
The top surface parallel clearance δ of group belt disturbs 1.5~2 times of average amplitude when being belt stable operation.
4. belt vibration damping device according to claim 1, it is characterised in that：The weakening wheel body（3-1）Axial length
More than the width of belt, and weakening wheel body（3-1）Both sides exceed belt.
5. belt vibration damping device according to claim 1, it is characterised in that：The dust-proof nut of locking（3-2）End face
Push down deep groove ball bearing（3-4）The outer face of outer shroud, makes outer shroud inner face be close to weakening wheel body（3-1）The inner side of bearing mounting hole
On end face.
6. belt vibration damping device according to claim 1, it is characterised in that：The dust-proof nut of locking（3-2）It is cylindrical
Annular groove is provided with, and work has multiple screwed holes on ring plate end face.
7. belt vibration damping device according to claim 1, it is characterised in that：Lock dust-proof nut（3-2）Endoporus has ladder
Annular groove, with dirt-proof boot（3-3）Annular groove convex-concave correspondence on cylindrical, radially with being axially equipped with uniform gap.
8. the belt vibration damping device according to any one of claim 1-7, it is characterised in that：The wheel carrier horizontal connecting plate
（2-1）The installation for being used for belt weakening wheel assembly provided with long waist shaped mounting hole is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328670.5A CN105805224B (en) | 2016-05-18 | 2016-05-18 | A kind of belt vibration damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610328670.5A CN105805224B (en) | 2016-05-18 | 2016-05-18 | A kind of belt vibration damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105805224A CN105805224A (en) | 2016-07-27 |
| CN105805224B true CN105805224B (en) | 2017-09-15 |
Family
ID=56451378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610328670.5A Active CN105805224B (en) | 2016-05-18 | 2016-05-18 | A kind of belt vibration damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105805224B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775373B (en) * | 2018-06-13 | 2019-12-10 | 南京埃斯顿自动化股份有限公司 | Vibration suppression method for servo motor and load multistage transmission system |
| CN112413070B (en) * | 2020-11-05 | 2022-01-28 | 珠海格力电器股份有限公司 | Synchronous belt tensioning mechanism and tensioning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204284373U (en) * | 2014-11-07 | 2015-04-22 | 李志敏 | A kind of unidirectional couplings damper pulley of spring friction catch |
| CN104806729A (en) * | 2015-04-27 | 2015-07-29 | 浙江洋通汽车配件有限公司 | Unidirectional buffer belt pulley |
| CN205745084U (en) * | 2016-05-18 | 2016-11-30 | 南京尚爱机械制造有限公司 | A kind of belt vibration damping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0516231B1 (en) * | 2004-10-22 | 2018-05-15 | Litens Automotive Partnership | SYNCHRONAL DRIVER |
-
2016
- 2016-05-18 CN CN201610328670.5A patent/CN105805224B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204284373U (en) * | 2014-11-07 | 2015-04-22 | 李志敏 | A kind of unidirectional couplings damper pulley of spring friction catch |
| CN104806729A (en) * | 2015-04-27 | 2015-07-29 | 浙江洋通汽车配件有限公司 | Unidirectional buffer belt pulley |
| CN205745084U (en) * | 2016-05-18 | 2016-11-30 | 南京尚爱机械制造有限公司 | A kind of belt vibration damping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105805224A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101595299B (en) | A wind turbine, a method for servicing a main bearing unit of a wind turbine and use thereof | |
| US8786151B1 (en) | Apparatus for maintaining air-gap spacing in large diameter, low-speed motors and generators | |
| AU2018374074B2 (en) | Generator module and wind turbine having the same | |
| CN105805224B (en) | A kind of belt vibration damping device | |
| US20110210631A1 (en) | Bearing arrangement and bearing block having a magnetic radial bearing and a safety bearing for a rotating machine | |
| JP4603704B2 (en) | Vibration control system and bearing centering device for magnetic bearing vacuum pump | |
| KR20160140727A (en) | A flywheel system | |
| CN205745084U (en) | A kind of belt vibration damping device | |
| CN101696685B (en) | Impeller overspeed testing apparatus | |
| CN106838165A (en) | Equipped with the automatic tensioner for being arranged symmetrically formula damping unit | |
| CN101963188B (en) | Three-directional composite self-lubricating sliding bearing for main shaft of wind turbine set | |
| US20240142341A1 (en) | Overload protection for drive test stands | |
| CN204900711U (en) | Automobile engine is with automatic belt tensioner who has damping member | |
| CN105386278B (en) | The electric motor mounting structure of household electrical appliance | |
| CN211423193U (en) | Last enhancement bearing frame of diesel generator | |
| CN209100486U (en) | A kind of composite machine bearing | |
| CN2643067Y (en) | High-speed thrust combination bearing with preload | |
| CN112065997A (en) | Spring absorption vibration type rigidity-adjustable hole type damping seal | |
| CN217130265U (en) | Chain wheel brake | |
| CN219090051U (en) | Driving device of upper limb multi-joint active and passive rehabilitation training device | |
| CN219257616U (en) | Motorcycle driving wheel mounting structure | |
| CN216056610U (en) | Tray type shaft-channeling-preventing device for semi-direct-drive generator structure | |
| CN106763195B (en) | A kind of elasticity tilting bush sliding bearing | |
| CN213088697U (en) | Belt pulley with antidetonation function | |
| CN216070743U (en) | Conveying system for box unpacking machine and box unpacking machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |