CN1026350C - Rectilinear reciprocating mechanism - Google Patents
Rectilinear reciprocating mechanism Download PDFInfo
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- CN1026350C CN1026350C CN 90106697 CN90106697A CN1026350C CN 1026350 C CN1026350 C CN 1026350C CN 90106697 CN90106697 CN 90106697 CN 90106697 A CN90106697 A CN 90106697A CN 1026350 C CN1026350 C CN 1026350C
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- chain
- commutator
- track
- straight line
- center hole
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Abstract
The present invention relates to a straight line reciprocating mechanism. The straight line reciprocating mechanism can be used on equipment which is needed to do straight line reciprocating motion. The straight line reciprocating mechanism is composed of two chains, four track bodies and two commutators. Long circular track grooves are arranged on the track bodies. Two ends of the pin shafts of the chains are extended outside the chains. Each end of the pin shafts is provided with a roller, and the rollers are arranged inside the corresponding long circular track grooves. The commutators are H-shaped, and pass through two pair of tracks. Two long pin shafts respectively pass through the through hole of each pair of track bodies, and two ends of the two long pin shafts are arranged inside the four corner grooves of the commutators by rollers. Triangle connecting sheets are used for being connected with the long pin shafts and the chains. The straight line reciprocating mechanism can ensure that the commutators do completely equiangular speed straight line motion on the central lines of the two tracks which are symmetrical and are provided with straight line segments.
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, chain-wheel 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=Rsi ω t, transmits effective merit of being done the back with the input work ratio to be: η=W
Output/ W
Input=
π 0Sin ω t+
2 π π-sin ω t/2/ π R=2/ π ≈ 0.64, so the limiting value of output work is 64% only, 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, chain-wheel mechanism partly are 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 commutator is connected with chain by pin 20.Owing to be that soft transmission can only be made used for oil extractor, and can not make other purposes, see accompanying drawing 7a, 7b.Chain drive pumping unit adopts symmetrical chain sprocket mechanism, though improved transmission efficiency 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, so produces violent bump when last lower dead centre commutates, and body was issued once in the halftime vibrated.The 2nd, all chains are in free state and unfettered, because the sprocket wheel single face is stressed, cause 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.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 to provide a kind of new linear shuttle mechanism, be used for the various devices that need moving linearly, can replace connecting rod to overcome its inefficiency, and stroke increases restricted shortcoming; Can replace symmetrical chain sprocket mechanism again, overcome the body vibration that it produces when the commutation of upper and lower dead point in soft transmission process, especially the commutator shortcoming that in one-period, can not take the air line all the time, the inferior utmost point that can also replace linear electric motor, overcome it and start frequently, the copper loss iron loss consumes the big shortcoming of intake.
The object of the present invention is achieved like this: the linear shuttle mechanism of being made up of chain, sprocket wheel, commutator, power source, the annular orbit body that four belt length looping pits are arranged, be equipped with long circular orbit slot on its end face, two track bodies are a pair, and its rail slot is installed relatively; Chain has two, its structure and common chain difference are that stretch out outside the chain at the bearing pin two ends, two ends stud with roller and are contained in respectively in the rail slot of relative installation, it is the chain of triangles sheet that one joint (two) chain sheet is arranged on the chain in addition, it places the inboard of sealed joint, and is connected a long looping pit that is arranged in track body of having strong market potential with have strong market potential an axle middle part; Commutator is an I shape, and there is groove its four jiaos of inboards, left and right two of two secondary track bodies at I shape, and the axle of having strong market potential in the long looping pit of track body is contained in four chamfered grooves of commutator by roller; With connecting plate fixedly connected two secondary track bodies, the center hole of connecting plate is concentric with the center hole of commutator I-shaped; The external sprocket wheel of chain and by drive power source.
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 can bear pulling force can bear pressure; (3) be to make the load on chain and the commutator do complete standard uniform rectilinear motion at following 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 promptly replaces the effect of sprocket wheel, does not produce the jumping tooth of sprocket wheel again, climbs the polygon effect side effect.
The effect of chain is: (one) transferring power; (2) be drive commutator and on load.When two chains of symmetry under drive power source, when doing the opposite direction rotation, just can guarantee that commutator has two of symmetry on the center line of straightway track does uniform rectilinear motion completely, does simple harmonic motion when running near the upper and lower dead point of track commutation.
Commutator is role on whole linear shuttle mechanism: (one) drives the straight line motion that load is made standard, promptly does the uniform rectilinear motion at the straightway of track, does the simple harmonic motion of straight line near upper and lower dead point.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 in the time of near commutator moves to upper and lower dead point, the axle of having strong market potential moves a segment distance from outside to inside or from inside to outside in four chamfered grooves of commutator, at this moment commutator is finished commutation, begin moving linearly downward or upward, can guarantee the straight line motion of commutator when therefore commutating, the flatness in the time of guaranteeing to commutate again.
At reciprocating piston pump, reciprocating-piston compressor on the mechanical devices such as petroleum beam-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.
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 can improve drilling well and only pump is changed at existence conditions 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, replace the multipotency 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 with the present invention as after the pumping unit, promptly solved the problem that beam-pumping unit exists, solved the existing problem of chain drive pumping unit again, because linear shuttle mechanism becomes structural rationality that pumping unit and well repairing machine are united, being pumping unit when oil pumping promptly, is well repairing machine when well workover, oil recovery and operation can be united, can save personnel and can raise the efficiency again, 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, can eliminate 45% copper loss and the iron loss that account for input power because of jogging is caused, 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 reciprocating piston pump, and pumping unit waits on the equipment that needs linear reciprocating motion.
The present invention is provided by following examples and accompanying drawing thereof:
Fig. 1 a is the structural representation of linear reciprocation pumping unit;
Fig. 1 b is the left view of Fig. 1 a;
Fig. 2 a is the schematic representation of belt length looping pit track body;
Fig. 2 b is the A-A sectional drawing of Fig. 2 a;
Fig. 3 is the chain structure schematic representation;
Fig. 4 is the cross-sectional schematic of commutator among Fig. 1 a;
Fig. 5 is the reciprocating piston pump structural representation;
Fig. 6 is reciprocal structure of the linear motion actuator schematic representation;
Fig. 7 a is the chain drive pumping unit structural representation;
Fig. 7 b is the left view of Fig. 7 a;
1 power source, 2 track bodies, 3 chains, 4 commutators 5 axle 6 chain of triangles sheets 7 commutator center holes 8 rollers 9 chains axle 10 connecting plates 11 piston rods 12 cylinder sleeves 13 elementary 14 air-balance connectors, 15 circular commutator 16 sprocket wheels 17 wire rope 18 large pulleys 19 chains 20 pins 21 chain links of having strong market potential of having strong market potential
Embodiment's 1 chain drive pumping unit
Linear shuttle mechanism is made up of two chains 3, two sprocket wheels 16, four track bodies 2, I shape commutator 4 and power sources 1.Long circular orbit slot is arranged on the track body, and the track body central part is long annular through-hole, and per two track bodies are a pair, install relatively, stretch out outside the chain at bearing pin 9 two ends of chain, and roller 8 is equipped with at two ends, 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 is positioned in the middle of the two secondary track bodies, two axles 5 of having strong market potential pass every secondary track body through hole respectively, and two ends are contained in I shape four chamfered grooves by roller 8; With the have strong market potential axle 5 and the chain 3 of chain of triangles sheet 6 connection commutators, chain 3 external power source 1 and sprocket wheels 16, commutator has center hole 7, and is concentric with the connecting plate center hole.Center hole connects sucker rod and has just constituted the linear reciprocation pumping unit.
Linear reciprocation pumping unit commutation working principle.
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, piston rod 11 passes through the center hole of connecting plate 10, and affixed with commutator center hole 7.Adopt power box action force source, replaced speed reducer and connecting rod.
Embodiment's 3 reciprocal linear electric motor
The chain 3 of linear shuttle mechanism of the present invention is saved, the secondary replacement chain of linear electric motor is contained in the long circular orbit slot, be fixedly mounted on the limit of track elementary 13.
Claims (4)
1, linear shuttle mechanism comprises chain 3, sprocket wheel 16, commutator 4, power source 1, it is characterized in that there is the track body 2 of four belt length looping pits in this mechanism, is equipped with long circular orbit slot on its end face, and two track bodies are a pair, and its rail slot is installed relatively; Stretch out outside the chain at bearing pin 9 two ends of chain 3, and two ends stud with roller 8 and are contained in respectively in the rail slot of relative installation; It is trigonometric form chain sheet 6 that one joint (two) chain sheet is arranged on the chain 3, and it places the sealed joint inboard and is connected with axle 5 middle parts of having strong market potential, and the axle 5 of having strong market potential is arranged in the long looping pit of track body; Commutator 4 is an I shape, and Qi Sijiao has groove, two secondary track bodies 2 in the I shape and arranged on left and right sides, packs in four chamfered grooves of commutator by roller 8 in axle 5 the two ends of having strong market potential; Connecting plate 10 fixedly connected two secondary track bodies, the connecting plate center hole is concentric with the center hole 7 of commutator I-shaped; Chain 3 external sprocket wheels 16 and by drive power source.
2, according to the described linear shuttle mechanism of claim 1, it is characterized in that the center hole 7 of I shape commutator connects sucker rod, constitute pumping unit.
3, according to the described linear shuttle mechanism of claim 1, the bottom that it is characterized in that cylinder sleeve 12 fixedly connected with connecting plate 10 piston rod 11 by connecting plate 10 center hole and with the center hole 7 affixed formation reciprocating piston pumps of commutator.
4, according to the described linear shuttle mechanism of claim 1, it is characterized in that the secondary replacement chain 3 of linear electric motor is contained in the long circular orbit slot, be fixedly mounted on the limit of track elementary 13 and constitute linear reciprocating motor.
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 CN1058832A (en) | 1992-02-19 |
| CN1026350C true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075479A (en) * | 2011-12-07 | 2013-05-01 | 临沂大学 | Reciprocating motion device |
| 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 |
| CN106744481B (en) * | 2016-12-29 | 2019-06-28 | 绍兴东茂环境建设有限公司 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN1058832A (en) | 1992-02-19 |
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