CN103671799A - Push rod type infinitely variable transmission - Google Patents
Push rod type infinitely variable transmission Download PDFInfo
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- CN103671799A CN103671799A CN201310698978.5A CN201310698978A CN103671799A CN 103671799 A CN103671799 A CN 103671799A CN 201310698978 A CN201310698978 A CN 201310698978A CN 103671799 A CN103671799 A CN 103671799A
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- sliding sleeve
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- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/035—Gearboxes for gearing with endless flexible members
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- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
- F16H57/0452—Oil pans
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/2807—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
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- 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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
- F16H2037/026—CVT layouts with particular features of reversing gear, e.g. to achieve compact arrangement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
According to a push rod type infinitely variable transmission, speed change is achieved when a speed change sliding sleeve in a gearbox is controlled to move leftward and rightward through an electric-hydraulic push rod so as to drive male wheel sets in two male and female wheel sets on a driving shaft and a driven shaft to move leftward and rightward so that corresponding changes can happen to the intersecting transmission radium between the female and male wheel sets on the driving shaft and the driven shaft. Due to the female and male intersected cone structure composed of two sets of female and male wheels on the driving shaft and the driven shaft, a good transmission carrier is provided for a driving belt. In the speed change process, the driving belt obtains a very large transmission resisting moment due to the fact that radial tension of the driving belt and mutual extrusion of the staggered cone surfaces of the female and male wheel sets are simultaneously conduced on the driving belt. The larger the resisting moment is, the higher the transmission efficiency is.
Description
Technical field
The invention belongs to the improvement in automotive transmission manufacturing technology field, particularly a kind of buncher.
Background technique
Automotive industry is the outstanding feature of a key industry development level, through the reform and opening-up over more than 30 years, absorb to introduce, the automotive industry of our country obtained the development of advancing by leaps and bounds.Particularly the development of Car Industry is just more rapid, someone says: " automotive engineering is exactly the technology of motor and speed changer device " although that the words is said is not necessarily very comprehensive, from a side illustration speed changer technology automobile industry development, be how important.Along with further maturation and the popularization, particularly Car Industry of Variable Speed Technology will welcome more vast potential for future development.The development experience of buncher process there is following characteristics once:
The development of 1.1 CVT technology, has had the history of more than 100 year.Germany Benz Co. is the founder who adopts CVT technology on automobile, as far back as within 1886, just V-type rubber belt type CVT being arranged on the gasoline automobile of the said firm's production.
Enter the nineties in 20th century, the research and development pay attention to day by day of motor-dom to CVT technology, particularly, in minicar, CVT is considered to key technology.The fast development of whole world science and technology, is constantly used in CVT new electronic technology and automatic control technology.
The first half of the year in 1997, Japanese Nissan company has developed and has used the CVT on 2.0L automobile.On this basis, Nissan developed a kind of CVT that comprises a manual shift mode designing for intermediate in 1998.Novel CVT adopts high strength wide strip and a high hydraulic control system of a up-to-date development.By adopting these advanced technology to obtain larger torque capacity, the electron controls technology of the research and development CVT of Nissan, full gear electronic control is carried out in the change of velocity ratio, automobile can be always when descending according to the braking of speed of a motor vehicle control engine, and on wet-skid road surface, can smoothly increase speed ratio and prevent from skidding.Nissan's plan expands the application area of its CVT to the car of 3.0L from 1.0L.
The advantage of 1.2 CVT technology
1, Economy
CVT can realize stepless change in quite wide scope, thereby obtains the optimum Match of power train and engine operating condition, improves the fuel economy of car load.4-AT has been installed respectively on the Golf VR6 car of oneself in the popular company of Germany and CVT carries out the circulation of ECE urban district and ECE suburb loop test, proves effectively capable of saving fuel oil of CVT.
2, power character
The stand-by power of automobile has determined grade ability and the accelerating ability of automobile.The stand-by power of automobile is larger, and the power character of automobile better.Due to the stepless change characteristic of CVT, can obtain the velocity ratio of stand-by power maximum, so the power performance of CVT is obviously better than mechanical transmission (MT) and automatic transmission (AT).
3, discharge
The speed ratio operating range of CVT is wide, can make motor with optimum condition work, thereby improve combustion process, has reduced the discharge amount of waste gas.The CVT entrucking that ZF company produces oneself is tested, and its discharge amount of exhaust gas has reduced about 10% than the automobile that 4-AT is installed.
4, cost
CVT system architecture is simple, and component number is than AT (approximately 500) few (approximately 300), once automaker starts mass production, the cost of CVT will be less than AT.Owing to adopting this system can capable of saving fuel oil, along with the innovation of mass production and system, material, the cost of production of CVT component (as driving belt or Transmitted chains, driving wheel, follower and oil hydraulic pump), will reduce 20%-30%.
Beyond any doubt, the technology content of CVT speed changer and manufacture difficulty are all high than MT speed changer, similar with AT speed changer, simple in structure due to metal band type CVT, and contained number of spare parts is than few 40% left and right of AT speed changer, the quality of car load thereby also alleviate to some extent.
5, drive smoothness
Because the rotating ratio of CVT changes, be continuously, so the acceleration or deceleration process of automobile is very mild, and drive very simple, safety.Thereby make user obtain omnibearing " enjoyment of travelling ".
The shortcoming that 1.3 CVT technology exist at present
1, compare traditional automatic catch gearbox, CVT gearbox manufacture cost outline is high, and reliability is undesirable; And if misoperation, the probability ging wrong is higher.No matter domestic or overseas at present, in a lot of situations of CVT gearbox, also cannot keep in repair can only integral replacing, and this has just directly caused the high of its maintenance cost.
2, CVT gearbox itself also has its intrinsic shortcoming, is exactly that the strength that can bear of the steel belt of transmission is limited.Generally speaking surpassing 3.0L discharge capacity or power more than 300Nm is its upper limit, but along with the development of technology, broken this upper limit, but the nonreversibility due to aufbauprinciple and mechanical wear, all the time cannot perfectly solve the working life of steel belt, especially in the situation that user likes violence to drive, reliability can not get sufficient assurance.
3, rationally use throttle as far as possible, avoid just mentioning speed and because CVT gearbox breaks down, cause the situation that vehicle is reprocessed to be in fact not limited in daily output electrodeless variable-speed vehicle equally with regard to heavily touch on the brake (can directly burn CVT steel band like this).According to correlation study, in previous, all there is CVT Gearbox Fault in Guangzhou Automobile Workshop's Honda, degree of flying and Audi's part vehicle.So far, can how much sum up CVT gearbox and aspect moment of torsion, can seem more responsive in routine use.
Total sensation, CVT is relatively applicable to using under urban environment, and most urban road speed limits can not surpass 90, and urban traffic situation blocks up often, the speed of a motor vehicle is slow especially, also just because of be stepless change, there will not be the pause and transition in rhythm or melody sense of gearshift, travelling comfort and Economy are relatively good.CVT does not have shortcoming in this case.But from the infinite variable speed applicable cases of the most popular several moneys of current Car Industry, all adopted the taper speed-changing wheel disc of two pairs of wide-angles, in order to obtain larger driving torque, all adopted oil hydraulic cylinder or cylinder promotion one of them cone pulley dish in active wheels and passive wheels to move to change the velocity ratio between driving wheel and driven wheel, but problem is driving belt, be by huge oil pressure, or air pressure frictional force that the extruding of driving belt is produced exchanges the driving torque of driving belt for, because the smooth wide-angle cone structure of speed governing wheel disc only depends on, increase pressure and produce frictional force and not only increased its efficiency of power consumption but also very low, have higher requirement to again quality and the working life of driving belt simultaneously.
Summary of the invention
The present invention seeks to design a kind of push rod buncher, the defect existing to overcome existing stepless change speed changer.
Push rod buncher, its input input end of splined shaft and the engagement of the ring gear of engine clutch, the other end of input splined shaft is arranged in gearbox the driving shaft as speed changer by tapered bearing, on driving shaft, be shaped with the keyway horizontally slipping in order to sun wheel and the moon wheel being combined as a whole with axle, the extending end of sun wheel is cylindrical body and in it, is shaped with the internal spline coordinating with splined shaft, the fixed block of positive wheels slide block is installed on the extending end of sun wheel, and by described fixed block, the angle contacting type ball bearing of sun wheel and pairing is fixed on the fixing support rack of sliding sleeve, described fixed block is that sun wheel and bearing are fixed on and on the spline housing that can slide, play the effect of slip shift fork, before and after speed change slide bushing assembly, have two, left and right is fixed together by two bearing supporting frames and sliding sleeve supporting element, wherein on the sliding sleeve plate of front and back, respectively has upper and lower two chutes to be arranged on the track of gear box front and back, the push rod of Electrohydraulic push rod is connected by montant with upper and lower two connecting rods through push rod fixed base, wherein going up end link fixes through casing and pusher slide cage plate, lower end link is fixedly connected with sliding sleeve plate through reverse gear hollow shaft, and Electrohydraulic push rod drives input shaft on slide bushing assembly and slide bushing assembly and the positive wheel assembly on jack shaft to horizontally slip to realize speed change by connecting rod, jack shaft is splined shaft, support by two bearings in left and right is arranged on casing, its end install with the flat toothed belt wheel of gear ring with together with flat toothed belt wheel on the reverse gear shaft of upper end by driving belt by equidirectional transmission of power to the reverse gear on reverse gear shaft, two belt wheels are to be fixed on corresponding transmission shaft by spline, reverse gear and gear ring reverse gear have the identical number of teeth and modulus, and velocity ratio is 1:1, and gear is fixed on reverse gear shaft by spline, one end of gear ring reverse gear has gear ring and centre that one group of deep groove ball bearing is installed, deep groove ball bearing group is arranged on the fixed position on output shaft, annular spring is installed on the end face of the other end near deep groove ball bearing and guarantees that the position of gear on output shaft is not subjected to displacement, the right-hand member of output shaft is connected to differential mechanism output torque by bearing and cardan shaft, and the left side of output shaft is provided with needle bearing and embeds in the end axis hole of jack shaft guarantees that jack shaft and output shaft are connected on a line, on the spline of output shaft, be equipped with the internal tooth casing with radial clearance, internal tooth casing exterior edge face is provided with the internal tooth sliding sleeve that can horizontally slip.
Negative and positive wheel construction in the present invention has substituted the wide-angle light cone face speed governing wheeling disk structure on traditional C VT speed changer, makes it fundamentally change the generation type of driving torque in traditional C VT speed changer.Due to the tension force of the side set structure driving belt in speed regulating mechanism forced-slip process between negative and positive wheels radially forming of speed governing wheel disc quadrature the power that mutually replaces, make driving belt obtain higher transmission efficiency.On intrinsic basis, increased in addition speed change sliding sleeve.The axial moment that its objective is positive pressure derivative a pair of opposite sign but equal magnitude on main quilt moving axis that the transmission tension force from driving belt is formed the conical surface of speed change negative and positive wheels makes it confine in speed change sliding sleeve, and final acting in conjunction is on casing and cancel out each other.What the control by the Electrohydraulic push rod newly increasing drove sliding sleeve again moves forward and backward to realize automatic speed changing.The design has also increased the conversion equipment of the gear reversing device of speed changer and forward gears, neutral, reverse gear.In gear reversing device, adopted two push away ball shift fork and replaced the fixedly shift fork in traditional gearshift, the noise that has so reduced speed variator system makes again manual shift device become more simple.In rear-guard sedan car, also can adopt in addition two speed changers (cancelling reverse gear apparatus in figure partly also resets) to dress, realize a trailing wheel of the corresponding driving of every speed changer, and adopt oil pressure pair push rods when realizing speed governing, to complete the task of differential.
Push rod buncher is by Electrohydraulic push rod, to control speed change sliding sleeve in gearbox to move left and right positive wheels in two groups of negative and positive wheels that drive on main quilt moving axis and move left and right and movingly make intersection transmission radius between the negative and positive wheels on main quilt moving axis that corresponding variation occur to realize speed change.Two groups of common cone structures alternating between negative and positive that form of negative and positive wheel due on main quilt moving axis, provide a good transmission carrier to driving belt.When speed change, driving belt had not only been subject to radial pull own but also be subject to being mutually squeezed in of the interlaced cone surface of negative and positive wheels and formed interlaced quadrature moment on driving belt and make driving belt obtain very large transmission resisting moment.Resisting moment is larger, transmission efficiency is higher, owing to having adopted the side set structure alternating between negative and positive of negative and positive wheels to substitute the wide-angle light cone face speed governing wheeling disk structure on traditional C VT speed changer in gearbox, make its generation type that has fundamentally changed driving torque in traditional C VT speed changer, make driving belt obtain higher transmission efficiency.The design pushes away with two the fixedly shift fork that ball shift fork has replaced the gearshift in traditional gearbox in the conversion equipment of the gear reversing device of gearbox and forward gears, neutral, reverse gear, and the noise that has so reduced speed variator system makes again manual shift device become more simple.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is manual shift flip sleeve assembly in the present invention.
Figure number explanation: 1, input splined shaft 2, positive wheels slide block fixed block 3, sun wheel 4, cloudy wheel 5, bearing 6, track 7, jack shaft 8, variable transmission belt 9, speed change slide bushing assembly 10, casing 11, internal tooth casing 12, gap.A, Electrohydraulic push rod B, push rod fixed base C, connecting rod D, sliding sleeve support frame E, pto＝power take-off F, gear ring reverse gear G, gear flip sleeve H, gear operating lever I, gearshift sliding sleeve push rod J, internal tooth sliding sleeve K gear ring belt wheel L, reverse gear driving belt M, reverse gear transmission shaft N, reverse gear.
Embodiment
As shown in Figure 1-2, the present invention inputs the input end of splined shaft 1 and the ring gear of engine clutch and mediates and be used for transmitting engine power.The other end of input splined shaft 1 is arranged in gearbox as the driving shaft of speed changer by tapered bearing 5, is shaped with in order to sun wheel 3 keyways that horizontally slip and the moon wheel 4 of being manufactured in together with axle on its axle.The extending end of sun wheel 3 be cylindrical body and in be shaped with the internal spline coordinating with splined shaft 1, the fixed block 2 of positive wheels slide block is installed on it, and by fixed block 2, the angle contacting type ball bearing of sun wheel 3 and pairing is fixed on the fixing support rack of sliding sleeve 9, fixed block 2 is with 3 screws, sun wheel 3 and bearing to be fixed on the spline housing that can slide, and just can play the effect of slip shift fork like this by sliding sleeve support combination speed-adjustable slide block assembly together.Speed change slide bushing assembly 9 front and back have two, and left and right is fixed together by two bearing supporting frames and sliding sleeve supporting element, wherein on the sliding sleeve plate of front and back, respectively have upper and lower two chutes to be arranged on the track 6 of gear box 10 front and back.The push rod of Electrohydraulic push rod A is connected by montant with upper and lower two connecting rods through push rod fixed base B, wherein goes up end link and fixes with pusher slide cage plate D through casing 10, and lower end link is fixedly connected with sliding sleeve plate through reverse gear hollow shaft M.Electrohydraulic push rod A horizontally slips to realize speed change by the input shaft 1 on connecting rod C drive slide bushing assembly 9 and slide bushing assembly and the positive wheel assembly on jack shaft 7.Jack shaft 7 is splined shafts, support by two bearings in left and right is arranged on casing, its end install with the flat toothed belt wheel K of gear ring with together with flat toothed belt wheel on the reverse gear shaft M of upper end by driving belt L by equidirectional transmission of power to the reverse gear N on reverse gear shaft M.Two belt wheels are to be fixed on corresponding transmission shaft by spline.Reverse gear N and gear ring reverse gear F have the identical number of teeth and modulus, and velocity ratio is 1:1, and gear N is fixed on reverse gear shaft M by spline.One end of gear ring reverse gear F is provided with one group of deep groove ball bearing in the middle of having gear ring, deep groove ball bearing group is arranged on the fixed position (see figure 2) on output shaft E, annular spring is installed on the end face of the other end near deep groove ball bearing and guarantees that the position of gear F on output shaft is not subjected to displacement, unloaded rotation under the support of gear F in bearing pack when the gear ring of gear F end face and internal tooth sliding sleeve I do not mediate.E is output shaft, and the right-hand member of axle is connected to differential mechanism output torque by bearing and cardan shaft.The left side of axle is provided with needle bearing and embeds in the end axis hole of jack shaft 7, guarantees that jack shaft 7 and output shaft E are connected on a line.On the spline of output shaft E, be equipped with the internal tooth casing of certain radial clearance, internal tooth casing exterior edge face is provided with the internal tooth sliding sleeve J that can horizontally slip, for the power stream from internal tooth sliding sleeve two ends gear ring optionally being passed to internal tooth casing and passing to output shaft E through the spline of internal tooth casing.Casing 10 is to consist of front and back two-part, for all axles in gearbox, by bearing, provides support, and lower end is Packed for storing the oily end of lubricant oil, has 4 tracks to horizontally slip for supporting speed governing sliding sleeve on the casing of front and back.
Stepless speed variator working principle:
Speed changer is partly comprised of numbering 1 to 10 workpiece the active wheels that (see figure 1) motor forms transmission of power to the negative and positive wheel on driving shaft 1 jointly through clutch, is passed to negative and positive wheel on the jack shaft 7 passive wheels of composition jointly power being spread through driving belt 8.Due to the common cone structure alternating between negative and positive forming of negative and positive wheel, to driving belt, provide a good transmission carrier.When speed changer when work driving belt is subject to cone surface alternating between negative and positive extruding has produced the radial pull of driving belt own mutually, driving belt has formed interlaced quadrature moment and makes driving belt and obtained very large transmission resisting moment on the surface of contact with negative and positive wheels are combined.Resistance is larger, transmission efficiency is higher.Under the effect of Electrohydraulic push rod, when speed change sliding sleeve 9 is stressed while sliding to the right, bearings support on sliding sleeve promotes bearing and drives sun wheel 3, on driving shaft 1, jointly slides to the right, the result of sliding is to the right: the sun wheel 3 on driving shaft 1 and the distance between cloudy wheel 4 diminish, and initiatively the driving belt transmission radius of wheels becomes large; The intersection transmission radius of the passive negative and positive wheels on jack shaft 7 diminishes simultaneously, thereby the rotating speed of driven axle is improved.
When speed change sliding sleeve 9 slides left, on 1 axle, initiatively the intersection transmission radius of the negative and positive of wheels wheel diminishes, and the negative and positive wheel intersection transmission radius of passive wheels becomes large, and driven axle rotating speed is reduced.
Reverse gear working procedure:
Reverse gear is comprised of gear ring belt wheel K, driving belt L, reverse gear shaft M, reverse gear N and gear ring reverse gear F and sliding sleeve member etc.Gear ring belt wheel K be one with the flat toothed belt wheel of gear ring, be arranged on jack shaft 7, end, be keyed on axle 7.Gear ring reverse gear F position is by fixing one group in position in gear, dress bearing to be fixed on E axle, during neutral, gear ring belt wheel K rotates along with the rotation of jack shaft 7, flow through driving belt L and reverse gear transmission shaft M of input power is communicated to reverse gear N, with gear ring reverse gear F is meshing, it is rotated backward again, at this moment gear ring and the sliding sleeve due to reverse gear F departs from mutually, and not transferring power is reversed in gear F zero load under inner bearing pack supports.When shift handle is when (afterwards) moves certain position to the right, gearshift drives internal tooth sliding sleeve J, moves right and mediate with gear ring reverse gear F by promoting gear flip sleeve, by from jack shaft 7, power through driving belt L, by power in the same way flow through reverse gear transmission shaft M, pass to reverse gear N, become and pass to internal tooth sliding sleeve with the rightabout moment of torsion of input shaft and through internal tooth casing, be communicated to output shaft E again with the meshing moment of torsion by forward of gear ring reverse gear F again, complete reverse gear function.
Gearshift and forward gear working procedure:
Because the lower end of the link I of gearshift is fixed support (on frame), as shift handle H, forward promote a fixed position after and handle is promoted to make handle self-locking laterally, in order to be that gearshift is easy, the gear ring that the tooth of flip sleeve axial end and two ends need to be mediated is between chamfered teeth and output shaft and internal tooth casing and is processed with certain radial clearance.At this moment the outside gearshift sliding sleeve G in the footpath of internal tooth sliding sleeve J, under the effect of gearshift push rod, promote gearshift sliding sleeve G and be embedded in one group of thrust angular contact bearing unit in sliding sleeve to be moved to the left in the lump and to drive internal tooth sliding sleeve J and belt wheel K, kneading with gear ring, at this moment shift gears sliding sleeve G and internal tooth casing J will obtain the forward power stream being transmitted by jack shaft 7 and pass to output shaft E through internal tooth casing.At this moment the gear ring reverse gear F on output shaft, under the support of internal bearings reversing but transferring power not.
Speed regulating mechanism is realized condition and the requirement of automatic speed regulation:
Speed regulating structure is by small-sized electric or Electrohydraulic push rod A, drives upper and lower two connecting rod C, moves left and right to control the slider mechanism global displacement in gearbox, thereby is arranged in sliding sleeve the rotating ratio that the intersection diameter of axle that the two groups of sun wheels up and down on diaxon are subjected to displacement the speed governing negative and positive belt wheel making on diaxon together changes to change upper and lower diaxon.Electronic or Electrohydraulic push rod speed of response and noise except the bidirectional propulsion of enough power can be provided are also to need the principal element considered.It is Yi Ge actuator in addition, realize automatic speed changing and must give actuator certain logic judgement, and this just need to control by the sensor of single-chip microcomputer and peripheral hardware.As the velocity transducer, the angle transducer of perception road surface situation, the perception driver that need the perception speed of a motor vehicle stroke sensor after stepping on the gas, single-chip microcomputer by the signal of inputting by these sensors carry out logic judgement as: when judging vehicle and being traveling in level road, just need to make with the size of throttle stroke and carry out directly proportional judgement, thereby allow execution push rod complete equal proportion acceleration or deceleration with throttle stroke; When vehicle is traveling in uphill way and the gradient, is greater than how many times and need to makes the inverse proportion carrying out with the size of throttle stroke and operated to refuel and slow down, thereby obtain larger moment of torsion while making vehicle be traveling in uphill way.For security consideration also should be installed hand control and automation mode-changeover device additional.
Speed changer is than estimating:
Because the state of the velocity ratio of speed changer and the banding pattern of driving belt and speed changer operation time has very large relation, therefore can only be chosen under limit case and estimate.
The diameter establish speed-changing wheel disc for the ease of analyzing is that to select cross section approximate diameter be the cross section, garden (not considering in driving belt working procedure indeformable) of 2.5cm for 19cm, driving belt.The transmission shaft diameter of axle is 4.4cm.The least radius of driving shaft is just
4.4CM/2=2.2cm。
The minimum transmission radius of driving wheel upper driving band is
2.2+1.25=3.45cm
The maximum transmission radius of follower is just
9.5CM-2.5cm／2
The transmission radius of=8.25cm.
Known according to the gear ratio formula of condition given above and speed changer:
The gear ratio of speed changer=follower transmission radius/driving wheel transmission radius.
Therefore the maximum reduction speed ratio of speed changer is 8.25/3.45=2.4
When speed changer sliding sleeve is shifted to the right to maximum value, speed changer can obtain maximum transmission speed increasing ratio.At this moment the maximum transmission radius of the wheel of the negative and positive on driving shaft conical surface upper driving band is:
9.5CM-2.5cm／2
The transmission radius of=8.25cm.
The minimum transmission radius of the negative and positive wheel conical surface upper driving band on driven axle is:
2.2+1.25=3.45cm
The maximum speed increasing ratio that speed changer obtains is: the drive system of 8.25/3.45=2.4 so gearbox is than being 2.4*2.4=5.76.
Claims (3)
1. push rod buncher, it is characterized in that inputting the input end of splined shaft (1) and the engagement of the ring gear of engine clutch, the other end of input splined shaft (1) is arranged in gearbox the driving shaft as speed changer by tapered bearing (5), on driving shaft, be shaped with the keyway horizontally slipping in order to sun wheel (3) and the moon wheel (4) being combined as a whole with axle, the extending end of sun wheel (3) is cylindrical body and in it, is shaped with the internal spline coordinating with splined shaft (1), the fixed block (2) of positive wheels slide block is installed on the extending end of sun wheel (3), and by described fixed block (2), the angle contacting type ball bearing of sun wheel (3) and pairing is fixed on the fixing support rack of sliding sleeve (9), described fixed block (2) is that sun wheel (3) and bearing are fixed on and on the spline housing that can slide, play the effect of slip shift fork, before and after speed change slide bushing assembly (9), have two, left and right is fixed together by two bearing supporting frames and sliding sleeve supporting element, wherein on the sliding sleeve plate of front and back, respectively has upper and lower two chutes to be arranged on the track (6) of gear box (10) front and back, the push rod of Electrohydraulic push rod (A) is connected by montant with upper and lower two connecting rods through push rod fixed base (B), wherein go up end link fixing through casing (10) and pusher slide cage plate (D), lower end link is fixedly connected with sliding sleeve plate through reverse gear hollow shaft (M), and Electrohydraulic push rod (A) horizontally slips to realize speed change by the input shaft (1) on connecting rod (C) drive slide bushing assembly (9) and slide bushing assembly and the positive wheel assembly on jack shaft (7), jack shaft (7) is splined shaft, support by two bearings in left and right is arranged on casing, its end is installed with the flat toothed belt wheel (K) of gear ring and equidirectional transmission of power is gone up to the reverse gear (N) on reverse gear shaft (M) by driving belt (L) with together with flat toothed belt wheel on upper end reverse gear shaft (M), and two belt wheels are to be fixed on corresponding transmission shaft by spline, reverse gear (N) and gear ring reverse gear (F) have the identical number of teeth and modulus, and velocity ratio is 1:1, and gear (N) is fixed on reverse gear shaft (M) by spline, one end of gear ring reverse gear (F) has gear ring and centre that one group of deep groove ball bearing is installed, deep groove ball bearing group is arranged on the fixed position on output shaft (E), annular spring is installed on the end face of the other end near deep groove ball bearing and guarantees that the position of gear (F) on output shaft is not subjected to displacement, the right-hand member of output shaft (E) is connected to differential mechanism output torque by bearing and cardan shaft, and the left side of output shaft (E) is provided with needle bearing and embeds in the end axis hole of jack shaft (7) guarantees that jack shaft (7) and output shaft (E) are connected on a line, on the spline of output shaft (E), be equipped with the internal tooth casing with radial clearance, internal tooth casing exterior edge face is provided with the internal tooth sliding sleeve (J) that can horizontally slip.
2. push rod buncher according to claim 1, is characterized in that casing (10) is to consist of front and back two-part, and lower end is Packed and at the bottom of storing the case of lubricant oil, is useful on and supports 4 tracks that speed governing sliding sleeve horizontally slips on the casing of front and back.
3. push rod buncher according to claim 1 and 2, is characterized in that also adding hand control and automation mode-changeover device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698978.5A CN103671799B (en) | 2013-12-18 | 2013-12-18 | Push-down buncher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698978.5A CN103671799B (en) | 2013-12-18 | 2013-12-18 | Push-down buncher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671799A true CN103671799A (en) | 2014-03-26 |
| CN103671799B CN103671799B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310698978.5A Expired - Fee Related CN103671799B (en) | 2013-12-18 | 2013-12-18 | Push-down buncher |
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Cited By (3)
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| CN104006127A (en) * | 2014-06-06 | 2014-08-27 | 张阳松 | Continuously variable transmission and motor vehicle with same |
| CN111779808A (en) * | 2019-12-12 | 2020-10-16 | 内蒙古农业大学 | Variable diameter continuously variable transmission |
| CN112709512A (en) * | 2020-12-24 | 2021-04-27 | 杭州富阳陶门开门机有限公司 | Stepless speed regulation door opener |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931126A (en) * | 2017-04-14 | 2017-07-07 | 南京越博动力***股份有限公司 | A kind of CVT gearboxes of Mechanical course belt shaft clamping force |
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| US4673377A (en) * | 1984-03-28 | 1987-06-16 | Mazda Motor Corporation | Belt-pulley type steplessly variable transmission having a reverse drive gear mechanism |
| CN2239535Y (en) * | 1995-11-10 | 1996-11-06 | 西北轻工业学院 | Controlling stageless speed variator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104006127A (en) * | 2014-06-06 | 2014-08-27 | 张阳松 | Continuously variable transmission and motor vehicle with same |
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| CN112709512A (en) * | 2020-12-24 | 2021-04-27 | 杭州富阳陶门开门机有限公司 | Stepless speed regulation door opener |
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| Publication number | Publication date |
|---|---|
| CN103671799B (en) | 2016-06-29 |
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