CN1058832A - Linear shuttle mechanism - Google Patents
Linear shuttle mechanism Download PDFInfo
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- CN1058832A CN1058832A CN 90106697 CN90106697A CN1058832A CN 1058832 A CN1058832 A CN 1058832A CN 90106697 CN90106697 CN 90106697 CN 90106697 A CN90106697 A CN 90106697A CN 1058832 A CN1058832 A CN 1058832A
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- chain
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Abstract
Linear shuttle mechanism can be used for need doing on the equipment of straight reciprocating motion.By two chains, four track bodies, two commutators are formed, and long circular orbit slot is arranged on the track body.Stretch out outside the chain at the bearing pin two ends of chain, and every end is equipped with roller, and roller is contained in the corresponding rail slot.Commutator is an I shape, passes in the middle of the two secondary tracks.Two axles of having strong market potential pass the through hole of every secondary track body respectively, and two ends are contained in commutator four chamfered grooves by roller, connect have strong market potential axle and chain in flakes with triangle.This mechanism can guarantee that commutator finishs congruent synchrone speed straight line motion on the center line of two of symmetry band straightway tracks.
Description
The present invention is a kind of mechanism that does straight reciprocating motion.Can be used for to do on the equipment of straight reciprocating motion.
To rotatablely move becomes straight reciprocating motion, adopts connecting rod more, and symmetrical chain sprocket mechanism and linear electric motor are several.
The subject matter that connecting rod exists, the one, it is low to transmit energy efficiency.The slide block movement rule is to change by y=Rsin ω t.Transmitting effective merit of being done the back with the input work ratio is: η=W output/W input=R
≈ 0.64, so the limiting value of output work is 64% only, and the merit that is lost in connecting rod is 36%.The 2nd, be unsettled in the transmission of one-period internal force.∵ F=mR ω
2Cos ω t, power is along with the time is constantly changing, and to the equipment with connecting rod, as reciprocating-piston compressor, the reciprocating piston pump delivery is just unstable.The 3rd, the increase of stroke is restricted.Increase stroke, will increase the length of the turning radius and the connecting rod of crank in proportion.When stroke reached certain length, the increase that causes gross weight was surprising, and the amplification of parts, the increase of body gross weight is given processing, transportation again, is installed and bring a series of problems, so the increase of stroke is restricted.
Symmetry chain sprocket mechanism partly is made up of large pulley 18, wire rope 17, sprocket wheel 16, circular commutator 15, chain 19, air-balance connector 14 and power source, and commutation is connected with chain by pin 20.Because be that soft transmission can only be made used for oil extractor, and the way that can not use it for anything else.See accompanying drawing 7.Chain drive pumping unit adopts symmetrical chain sprocket mechanism, though improved efficient 30%, but still have unsurmountable problem.The one, chain drive pumping unit can't solve the stressed problem of sprocket wheel single face owing to adopt sprocket driving, therefore produces violent bump when last lower dead centre commutates, and makes body in the halftime once vibration take place.The 2nd, used chain is unfettered under free state, because the sprocket wheel single face is stressed, causes high vibration in the unloading suddenly of last lower dead centre with loading, and the life-span of chain is shortened greatly.The 3rd, the suspension arrangement of pumping unit is to be connected with commutator through large pulley with wire rope, and wire rope is subjected to the effect of frequent alternating bending stress in the operation process, is easy to damage, and promptly uses special wire rope, and only be 1 year its working life.Why adopt above structure to be because commutator can not take the air line in the one-period of running all the time, have only the above suspension structures of employing, just can make suspension arrangement and well head centering, the unlikely polished rod that causes in use bends.The 4th, the balance of chain drive pumping unit adopts air-balance, and not only complex structure, and working life is short.
The subject matter that linear electric motor exist is, when inferior utmost point of linear electric motor did reciprocating linear motion, a reciprocal week must stop twice startup twice, and generally inrush current is bigger about 9 times than normal operating current.Because frequent startup, the copper loss iron loss consumes 55% of intake, so the efficient of linear electric motor transmission energy only is 45%.
The objective of the invention is in order to solve the shortcoming in the said mechanism, a kind of new structure linear shuttle mechanism that has improved is provided, can be applicable to different needs and do in the straight-line device.
The object of the present invention is achieved like this, by the linear shuttle mechanism that chain, commutator are formed, four track bodies arranged, and long circular orbit slot is arranged on the track body, and the track body central part is the through hole of same shape, and per two track bodies are a pair, installs relatively.Chain has two, its structure and common chain difference be bearing pin than common chain pin axial length, stretch out outside the chain at its bearing pin two ends, every end is equipped with roller, the roller at two ends is contained in respectively in the corresponding rail slot, with connecting plate fixedly connected two secondary track bodies.Commutator is an I shape, there is groove at four angles, I shape passes in the middle of the two secondary tracks, the axle of having strong market potential passes the through hole of a secondary track body, two ends are contained in the groove of four jiaos of I shapes by roller, with triangle connect in flakes commutator have strong market potential the axle and chain, the commutator I-shaped has center hole, and is concentric with the connecting plate center hole.
Have the effect of the ring track of straightway: (one) inlays the chain two ends to stretch out roller on the axle of having strong market potential; (2) be the constraint chain, the hard driving component that chain is become can rotate flexibly, chain both can bear pulling force, can bear pressure again; (3) be to make the load on chain and the commutator make complete standard isogonism speed straight line motion at straightway; (4) be eliminate commutator with near the vibration of load last lower dead centre; (5) be to eliminate in the symmetrical chain sprocket mechanism because of hanging chain with sprocket wheel, the effect of the single face power that chain produces had both replaced the effect of sprocket wheel, did not produce the effect of paying of sprocket wheel again.
The effect of chain is: (one) transferring power; (2) be drive commutator and on load.Under two drivings of chain of symmetry at power, when doing the opposite direction rotation, just can guarantee that commutator has two of symmetry on the center line of straightway track makes isogonism speed straight line motion completely, does simple harmonic motion when running on the track near the lower dead centre commutation.
Commutator is role on whole linear shuttle mechanism, and (one) drives the straight line motion that load is made standard, promptly makes isogonism speed straight line motion at the straightway of track, does the simple harmonic motion of straight line near last lower dead centre.That is to say that commutator is done straight reciprocating motion all the time in one-period; (2) be guarantee commutation level and smooth.Because commutator rotates with chain near the lower dead centre time on commutator runs to, the commutation guide rail is started working, and has strong market potential axle in four chamfered grooves of commutator, walks a segment distance from outside to inside or from inside to outside, and at this moment commutator all the time at moving linearly.Therefore can guarantee the straight line motion of commutator during commutator, the flatness in the time of guaranteeing to commutate again.Constant speed straightway two have strong market potential the axle do not move.
At reciprocating piston pump, reciprocating-piston compressor on the mechanical devices such as recover petroleum pumping unit, can be increased work efficiency more than 32% with structure applications of the present invention.This mainly be because straight line constant speed section of the present invention account for total stroke length 90% or more and the acquisition.Its indicator diagram is as follows:
Can draw its running efficiency by above indicator diagram is:
The present invention can rise to the stroke of equipment needed length (general about 11-fold increase) and that weight increases is few except that raising the efficiency.And for example concerning reciprocating piston pump, not only prolonged the life-span of valve system, cylinder sleeve, piston, what is more important is because the raising of efficient makes the pressure of pump can improve 67% under the constant condition of discharge capacity, this just oil drilling under existence conditions, only pump is changed and just can carry out high-pressure jet drilling, (because of high-pressure jet drilling can improve bit speed 2-4 doubly) existing pump is done less than this point because of efficient is low.We can also be generalized to oil-field flooding with Piston Reciprocating Pump and get on, and replace multistage centrifugal pump with Piston Reciprocating Pump, can economize on electricity more than 35%.
Structure of the present invention has solved four problems that chain drive pumping unit occurred.
If the present invention as the problem that had both solved the beam-pumping unit place after the pumping unit, has been solved the existing problem of chain drive pumping unit again.Because linear shuttle mechanism rationality structurally can make pumping unit and well repairing machine unite, when oil pumping, be pumping unit promptly, it when well workover well repairing machine, oil recovery and operation can be united, not only can save personnel but also can raise the efficiency, in management and well stimulation, creating a new way in the oil field.The equipment that this pumping and well repairing machine are unified is used in the formation testing work, can improve formation testing speed greatly.
As the present invention and linear electric motor are combined, can make linear electric motor when commutation, need not to stop and startup, just can eliminate 45% copper loss and the iron loss that account for input power because of frequent starting rose, can raise the efficiency 45%, linear shuttle mechanism and linear electric motor are combined and transmission case in the linear shuttle mechanism and motor can be replaced with the elementary of linear electric motor, power transmission chain is replaced with secondary, and the other parts of linear shuttle mechanism are motionless just can be finished.This linear oscillating motor will exceed 45% than linear electric motor efficient, and same linear oscillating motor can be used on the reciprocating-piston compressor, and the reciprocating piston pump pumping unit, waits on the equipment that needs linear reciprocating motion.
Running principle of the present invention is:
Under motivational drive, through chain in transmission case or the elementary drive track or rotating secondaryly in track, move.By chain or rotating secondary drive commutator, drive load by commutator again and do straight reciprocating motion.Do the uniform rectilinear motion at straightway.Its motion equation is
y＝u·t……①
Y ... distance (m)
V ... speed (m/s)
T ... time (s)
So owing to make uniform rectilinear motion v=constant.So acceleration a=0, so noninertia power.And active force is uniform.When commutating near last lower dead centre, the load that commutator drives is done simple harmonic motion, and its motion equation is
y＝Rsinωt……②
Y ... distance (m)
R ... the turning radius (rice)
ω ... angular velocity (1/ (s))
T ... time (s)
Its acceleration a=-Rw
2Therefore sin ω t has the generation of inertial force.Straight line constant speed section accounts for whole stroke about 90% in one-period, and the simple harmonic quantity section only accounts for about 10%.
The present invention is provided by following enforcement and accompanying drawing thereof:
Accompanying drawing 1 linear shuttle mechanism structural drawing (chain drive pumping unit structural drawing)
Accompanying drawing 2 long ring track structure figure
Accompanying drawing 3 chain structure figure
Accompanying drawing 4 commutator structure figure
Accompanying drawing 5 reciprocating piston pump structural drawing
Accompanying drawing 6 reciprocal structure of the linear motion actuator figure
Accompanying drawing 7 symmetrical chain sprocket pumping unit structural drawing
1, power box, 2, track body, 3, chain, 4, commutator, 5, the axle of having strong market potential, 6, triangle in flakes, 7, the commutator center hole, 8, roller, 9, the chain axle of having strong market potential, 10 connecting plates, 11, piston rod, 12, cylinder sleeve, 13, elementary, 14, the air-balance connector, 15, circular commutator, 16, sprocket wheel, 17, wire rope, 18, large pulley, 19, chain, 20, pin, 21, chain link
Embodiment's 1 chain drive pumping unit
Linear shuttle mechanism is made up of 2, two commutators of 3, four track bodies of two chains 4.Long circular orbit slot is arranged on the track body, and the track body central part is the through hole of same shape, and per two track bodies are a pair, installs relatively.Stretch out outside the chain at bearing pin 9 two ends of chain, and every end is equipped with roller 8, and the two ends roller is contained in the corresponding rail slot.With connecting plate 10 fixedly connected two secondary track bodies.Commutator 4 is an I shape, and there is groove at four angles, and commutator passes in the middle of the two secondary tracks, and two axles of having strong market potential 5 pass every secondary track body through hole respectively, and two ends are contained in I shape four chamfered grooves by roller 8, with triangle 6 have strong market potential axle 5 and chains 3 that connect commutators in flakes.Commutator has center hole 7, and is concentric with the connecting plate center hole.Center hole connects the external power box 1 of oil well pump, has just constituted chain drive pumping unit.
Embodiment's 2 reciprocating piston pump structural drawing
Above-mentioned linear shuttle mechanism is applied on the reciprocating pump.Fixedly connected with connecting plate 10 in the bottom of cylinder sleeve 12, center hole 7 by the commutator of connecting plate of piston rod 11 is also affixed with center hole.Adopt power box 1 source that is used as power, replaced speed reducer and connecting rod.
Embodiment's 3 reciprocal linear electric motor
The chain link 21 of the chain 3 of linear shuttle mechanism of the present invention is saved, the secondary replacement chain link of linear electric motor is contained in the long circular orbit slot, be fixedly mounted on the limit of track elementary 13.
Claims (1)
1, a kind of linear shuttle mechanism of forming by chain 3, commutator 4, chain joins by bearing pin 5 and commutator, it is characterized in that also being with four track bodies 2, and long circular orbit slot is arranged on the track body, and the track body central part is the through hole of same shape; Per two track bodies are a pair, install relatively;
Chain 3 has two, and stretch out outside the chain at its bearing pin 9 two ends, and every end is equipped with roller 8, and the roller at two ends is contained in respectively in the relative rail slot, with connecting plate 10 fixedly connected two secondary track bodies;
Commutator 4 is an I shape, and four jiaos have groove, I shape to pass in the middle of the two secondary tracks, the through hole that the axle 5 of having strong market potential passes a secondary track body, and two ends are contained in by roller 8 in the groove of four jiaos of I shapes, with triangle 6 have strong market potential axle 5 and chains that connect commutators in flakes; Commutator has center hole 7, and is concentric with the connecting plate center hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106697 CN1026350C (en) | 1990-08-04 | 1990-08-04 | Rectilinear reciprocating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106697 CN1026350C (en) | 1990-08-04 | 1990-08-04 | Rectilinear reciprocating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1058832A true CN1058832A (en) | 1992-02-19 |
| CN1026350C CN1026350C (en) | 1994-10-26 |
Family
ID=4880218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106697 Expired - Fee Related CN1026350C (en) | 1990-08-04 | 1990-08-04 | Rectilinear reciprocating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026350C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589870A (en) * | 2012-03-11 | 2012-07-18 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN103075479A (en) * | 2011-12-07 | 2013-05-01 | 临沂大学 | Reciprocating motion device |
| CN103615220A (en) * | 2013-12-13 | 2014-03-05 | 中国石油大学(华东) | Dual-chain drive pumping unit |
| CN106744481A (en) * | 2016-12-29 | 2017-05-31 | 宁波平安智能科技有限公司 | A kind of construction material elevator large scale equipment |
| CN110433063A (en) * | 2018-05-04 | 2019-11-12 | 马丽娟 | A kind of reciprocating apparatus for massager |
-
1990
- 1990-08-04 CN CN 90106697 patent/CN1026350C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075479A (en) * | 2011-12-07 | 2013-05-01 | 临沂大学 | Reciprocating motion device |
| CN102589870A (en) * | 2012-03-11 | 2012-07-18 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN102589870B (en) * | 2012-03-11 | 2014-04-02 | 东华大学 | System for testing service life of special straight reciprocating motion mechanism |
| CN103615220A (en) * | 2013-12-13 | 2014-03-05 | 中国石油大学(华东) | Dual-chain drive pumping unit |
| CN106744481A (en) * | 2016-12-29 | 2017-05-31 | 宁波平安智能科技有限公司 | A kind of construction material elevator large scale equipment |
| CN110433063A (en) * | 2018-05-04 | 2019-11-12 | 马丽娟 | A kind of reciprocating apparatus for massager |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1026350C (en) | 1994-10-26 |
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