CN101922537A - Long-cone pulley shaft controlled mechanical stepless speed-changing device - Google Patents
Long-cone pulley shaft controlled mechanical stepless speed-changing device Download PDFInfo
- Publication number
- CN101922537A CN101922537A CN2009100531616A CN200910053161A CN101922537A CN 101922537 A CN101922537 A CN 101922537A CN 2009100531616 A CN2009100531616 A CN 2009100531616A CN 200910053161 A CN200910053161 A CN 200910053161A CN 101922537 A CN101922537 A CN 101922537A
- Authority
- CN
- China
- Prior art keywords
- shaft
- stepless speed
- long
- changing device
- cone pulley
- 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.)
- Pending
Links
Images
Landscapes
- Transmissions By Endless Flexible Members (AREA)
Abstract
The invention belongs to the field of mechanical transmission, in particular to a mechanical stepless speed-changing device. The long-cone pulley shaft controlled mechanical stepless speed-changing device is characterized in that a power input shaft (1) and an output shaft (2) are a pair of long-cone pulleys with oppositely configured large ends and small ends, wherein one shaft is a fixed shaft, a shaft-end bearing (8) of the fixed shaft is fixed with a case, the other shaft is a variable shaft, a shaft-end bearing (8) of the variable shaft is restrained by external control force, and an included angle between the axes of the two shafts is variable; and an annular transmission belt (3) is arranged around the input shaft (1) and the output shaft (2) and is a planar belt or a high-elasticity steel-ring belt. The mechanical stepless speed-changing device has the advantages of less parts, simple structure, low realization cost, easy processing and maintenance, wide application range, smooth speed change, single control, small part abrasion, low power consumption, high transmission efficiency, low mechanical impact, better stress situation than that of the traditional stepless speed-regulating device, and the like.
Description
(1) technical field
The invention belongs to mechanical transmission fields, particularly relate to a kind of mechanical stepless speed-changing device.
(2) background technique
In mechanical transmission fields, automotive field particularly, speed change all the time with the transmission symbiotic co-existence.
Switch by clutch and gear, recently reaching different speed output with different gears is the most basic speed change.But this speed change is a jump type, and its process can be experienced the sudden change of speed significantly, and instantaneous power interruption is arranged, and is easy to cause the impact of making tooth and machinery.
By fluid torque converter, there is not rigid joint between power input and output link, though can better eliminate shock and vibration, and can realize automatic speed changing within the specific limits, starting and overload protection are functional; But the efficient of this technology hydraudynamic drive is lower, influences the power performance and the Economy of car load; And amount of parts is many, complex structure, care and maintenance inconvenience.
The stepless speed changes devices CVT (Continuously Variable Transmission) that automotive field extensively adopts at present, as one of world car industry ten big epoch-making technology, the seventies is invented by Dutch engineer Van doctor Doorne.But typical-sample is made up of a pair of reducing V-type friction wheel and metal driving belt: (extremely shown in Figure 8 as Fig. 3) driving belt is a V-type band, but a pair of reducing V-type friction wheel then is made up of stator and moving plate; Its stator is fixed with input shaft and output shaft respectively, and corresponding moving plate can clamp stator vertically or loosens when rotating with axle by control requirements, and regulating the action radius of friction wheel and band, thereby the change velocity ratio reaches the purpose of stepless change.CVT has that part is few, volume is little, in light weight, higher advantages such as transmission efficiency are arranged.
But analyze the stressing conditions of this device, can find that all transmission of power finish by the both sides of V-type friction wheel clamping driving belt.The control of chucking power is crucial: then can consume part power as the application of force is excessive, also quicken the wearing and tearing of metal tape and friction wheel, chucking power is too small then easily skids; Especially must carry out folding and unfolding to two-wheeled synchronously during speed change, control requires high, very easily makes vehicle that unsmooth, the stall and the phenomenon of speed change suddenly take place.In addition, if the subtended angle of V-type friction wheel is excessive, then speed governing is not obvious, and subtended angle such as too small then requires highlyer to control, and kinetic equation loss and component wear are bigger.In sum, the technical requirements and the realization cost of this device have all been strengthened.
For this reason, market is wished that updating arranged, is had more desirable structure to come out, and wishes to realize the purpose of same stepless change, but can make technical requirements and realize that cost reduces greatly.
(3) summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, speed change is easy, transmit reliable, the mechanical stepless speed-changing device that kinetic equation loss and component wear are little.
Technological scheme
The objective of the invention is to be achieved through the following technical solutions:
Long-cone pulley shaft controlled mechanical stepless speed-changing device is characterized in that: power input shaft is the long cone pulley of the relative configuration of a pair of big small end with output shaft; Wherein one is dead axle, and its axle end bearing and cabinet are fixed, and another axle is a flexible shaft, and its axle end bearing is added control force and retrains, and the angle of two axis is variable; Driving belt around an input shaft and an annular of output shaft configuration.
Described driving belt is a planar band, on the planar band tension pulley can be set, and joins tension spring.
Described driving belt also can be high elasticity steel loop band and tension pulley and tension spring need not be set again.
Axle end bearing and gimbal coupling that described input shaft is suitable with the configuration of output shaft axle head.
Long conical pulley stepless speed change device is as one of mechanical stepless speed changes technology, usually adopt the intermediate friction part between the long cone pulley of mode such as guide wheel and positioned opposite parallel to control to two, described friction member generally adopts friction wheel or friction band, it can be moved vertically realize stepless change.(shown in Fig. 1,2 and 9)
To adopt the driving belt speed governing is example (as Fig. 9).When mechanically activated, driving belt is defined between the big end of the small end of input shaft and output shaft by guide wheel, this moment velocity ratio greater than, be deceleration regime, along with the variation or the requirement of driving torque, control system may command guide wheel along guide rod to the right or move left and right, thereby moving of guiding driving belt, and change velocity ratio gradually,, be the speedup state until less than 1.Whole speed regulation process is stepless and level and smooth, and is particularly following dominating of control system, can make machinery be in best economical operation state all the time.
The present invention notices: control transmission for any employing guide wheel etc. and bring for the long conical pulley stepless speed change device that carries out speed governing, be in operation, if driving belt be not subjected to guide wheel etc. when limiting, it has the tendency of " in becoming ", be that driving belt trends towards the low-tension end, tend to velocity ratio and be 1 position.In other words, the function of " resetting " is automatically arranged.Principle: when two cone pulley axles are in when parallel, though the projection line of the dual-side of driving belt on front view is isometric, its reality is slightly variant around girth.That is: constant when two circle distance of center circle, when two circle radius sums are definite value, the difference of its radius is littler, it is shorter then to encircle contour.Derivation is omitted.Therefore when variable-speed operating control, adopting guide wheel is a kind of mode.If when keeping belt tension, to the angle of input shaft and output shaft slight variations slightly, can be considered the tension force of driving belt dual-side slight variations slightly, also can change " resetting " position of driving belt, reaching the purpose of speed change, and need not guide wheel.
In actual the use, if bring alternative ordinary driving belt with the high elasticity steel loop.The between centers pressurization device is a preloading spring, makes the steel loop band keep necessary normal direction impacting force to the input output cone pulley.Equally,, also can change " resetting " position of steel loop driving belt to the angle of input shaft and output shaft slight variations slightly, reaching the purpose of speed change, and need not tension pulley.
During practical application, more input shaft can be fixed, only output shaft controlled just, the angular variation of output terminal axis can adopt connection universal joint or flexible coupling to solve.
Beneficial effect
Superiority of the present invention and beneficial effect find expression in: 1. parts are few, and structure is more simplified.2. not harsh to material requirements and designing requirement.Therefore realize that cost is low, easily processing, easy care maintenance.3. applied widely, to senior locomotive, or corresponding mechanical field all can adopt from simple rickshaw.4. control single.Only be that the angle of diaxon is controlled, the velocity ratio that can realize ideal.5. component wear is little, and kinetic equation loss is low, the transmission efficiency height.6. force-bearing situation is better than existing stepless speed regulation, and gear range can exceed existing stepless speed-regulating device.7. speed change is level and smooth, and is more single because of controlling in when operation, and even tension can not make machinery that the phenomenon of unsmooth, stall and unexpected speed change takes place.8. reduce impact to machinery.
(4) description of drawings
Fig. 1 is long conical pulley stepless speed change speed control principle schematic representation, for adopting the speed governing of mobile friction wheel mode;
Fig. 2 is long conical pulley stepless speed change speed control principle schematic representation, moves friction band mode for adopting, and also is the guide wheel mode of speed regulation;
Fig. 3,4 is the extensively front view and the side view of the V shaped wheel stepless change schematic representation of employing of motor field current;
Fig. 5,6 is the schematic representation of Fig. 3, speedup/deceleration regime of 4, the moving direction of moving plate when arrow is depicted as speed governing;
Fig. 7,8 is the schematic representation of Fig. 3, deceleration/speedup state of 4, the moving direction of moving plate when arrow is depicted as speed governing;
Fig. 9,10 is front view and the side view that adopts the long conical pulley stepless speed change structural representation of guide wheel regulation and control friction band, and is kept the tension force of driving belt by tension pulley;
Figure 11,12 is for a kind of mode of execution of long-cone pulley shaft controlled mechanical stepless speed-changing device of the present invention, the two ends of output shaft are furnished with preloading spring, and by the outside outputting power of gimbal coupling, adopt planar band as driving belt, give the structural representation of tensioning by tension pulley, show its front view and side view;
Figure 13,14 is and Figure 11,12 similar another kind of mode of executions, wherein adopts the Elastic Steel endless belt as driving belt, need not the structural representation of tension pulley, shows its front view and side view.
Among the figure: 1-input shaft, 2-output shaft, 3-driving belt, 4-guide wheel, 5-guide rod, 6-tension pulley, 7-tension spring, 8-axle end bearing, 9-preloading spring, 10-gimbal coupling.
(5) embodiment
Embodiment: the application on Motor Vehicle
Further describe structure of the present invention below in conjunction with accompanying drawing.
Long-cone pulley shaft controlled mechanical stepless speed-changing device is characterized in that: power input shaft 1 is the long cone pulley of the relative configuration of a pair of big small end with output shaft 2; Wherein one is dead axle, and its axle end bearing 8 is fixed with cabinet, and another axle is a flexible shaft, and its axle end bearing 8 is added control force and retrains, and the angle of two axis is variable; Driving belt 3 around an input shaft 1 and an annular of output shaft 2 configurations.
Described driving belt 3 is a planar band, and a tension pulley 6 can be set on the planar band, joins tension spring 7.
Described driving belt 3 also can be high elasticity steel loop band and tension pulley 6 and tension spring 7 need not be set again.
Suitable axle end bearing 8 and the gimbal coupling 10 of described cone pulley 1,2 axle heads configuration.
Follow: when keeping belt tension,, also can change " resetting " position of driving belt, to reach the purpose of speed change to the angle of input shaft and output shaft slight variations slightly.
To shown in Figure 14, setting input shaft 1 is stationary axle as Figure 11, and output shaft 2 is a flexible shaft.Wherein, the two end axles bearing and the cabinet of input shaft 1 are fixed, joint shaft bearing is used at the two ends of output shaft 2, the bearing outer ring seat is defined in the rail groove of cabinet both sides, allow it to move up and down when controlled, do not add when control, should satisfy driving belt the input output cone pulley is kept necessary normal direction impacting force then by preloading spring institute support up and down, and, comprise the balance of making a concerted effort such as the planar band tension force that adopts tension pulley or steel loop band deformation elastic force with power input, load and belt tension; One end of output shaft 2 (containing input shaft 1) adopt thrust-bearing when stoping transmission by the axial displacement that axial thrust load was caused, the other end then adopts free bearing to scurry a phenomenon to solve because of what the axis change caused.
The angular variation of output terminal axis then adopts connection gimbal coupling 10 to solve.
Be when simultaneously this device being started or can revert to the big speed ratio deceleration regime automatically as its default setting when doing control.
When vehicle launch, this device is with the high pulling torque big speed ratio, be deceleration regime output, variation or driving requirement along with driving torque, control system can apply control force to the both ends or one end of output shaft, with the angle of change input and output shaft, thereby guiding driving belt 3 trends towards suitable velocity ratio position; Driving belt 3 tension force or the possible change of the impacting force of cone pulley then compensated automatically by axle head preloading spring 9 and tension pulley 6 (adopting common plane band scheme) or high elasticity steel loop band (adopting steel loop band scheme).
Because the output shaft 2 of this device is dynamic equilibrium state, i.e. the process of transmission and speed change must satisfy and respectively acts on equilibrium of forces, and it has objectively also reduced the impact to machinery.
Claims (6)
1. long-cone pulley shaft controlled mechanical stepless speed-changing device, it is characterized in that: power input shaft (1) is the long cone pulley of the relative configuration of a pair of big small end with output shaft (2); Wherein one is dead axle, and its axle end bearing (8) is fixed with cabinet, and another axle is a flexible shaft, and its axle end bearing (8) is added control force and retrains, and the angle of two axis is variable; Driving belt (3) around an input shaft (1) and an annular of output shaft (2) configuration.
2. long-cone pulley shaft controlled mechanical stepless speed-changing device according to claim 1 is characterized in that: axle one end of described flexible shaft or axle two ends configuration preloading spring (9).
3. long-cone pulley shaft controlled mechanical stepless speed-changing device according to claim 1 is characterized in that: described driving belt (3) is a planar band.
4. long-cone pulley shaft controlled mechanical stepless speed-changing device according to claim 3 is characterized in that: a tension pulley (6) is set on the described planar band.
5. long-cone pulley shaft controlled mechanical stepless speed-changing device according to claim 1 is characterized in that: described driving belt (3) is a high elasticity steel loop band.
6. long-cone pulley shaft controlled mechanical stepless speed-changing device according to claim 1 is characterized in that: axle end bearing (8) and gimbal coupling (10) that described input shaft (1) is suitable with the configuration of output shaft (2) axle head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100531616A CN101922537A (en) | 2009-06-16 | 2009-06-16 | Long-cone pulley shaft controlled mechanical stepless speed-changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100531616A CN101922537A (en) | 2009-06-16 | 2009-06-16 | Long-cone pulley shaft controlled mechanical stepless speed-changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922537A true CN101922537A (en) | 2010-12-22 |
Family
ID=43337651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100531616A Pending CN101922537A (en) | 2009-06-16 | 2009-06-16 | Long-cone pulley shaft controlled mechanical stepless speed-changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101922537A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423393A (en) * | 2012-05-18 | 2013-12-04 | 黄家军 | Continuously variable transmission |
| CN103671780A (en) * | 2012-09-24 | 2014-03-26 | 李志强 | Belt type stepless speed change device |
| US10259280B1 (en) * | 2016-07-22 | 2019-04-16 | Richard Darin Roe | Lightweight amphibious vehicle |
-
2009
- 2009-06-16 CN CN2009100531616A patent/CN101922537A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423393A (en) * | 2012-05-18 | 2013-12-04 | 黄家军 | Continuously variable transmission |
| CN103671780A (en) * | 2012-09-24 | 2014-03-26 | 李志强 | Belt type stepless speed change device |
| US10259280B1 (en) * | 2016-07-22 | 2019-04-16 | Richard Darin Roe | Lightweight amphibious vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201461881U (en) | Stepless speed change device with long bevel wheels | |
| Zhu et al. | Experimental investigation on the efficiency of the pulley-drive CVT | |
| CN101975269B (en) | Speed ratio control device with belt type continuously variable transmission | |
| CN103603934B (en) | A kind of stepless speed changing mechanism | |
| CN102209860A (en) | Automatic geared variator for changing gear ratio without disengaging gears and without control devices or therewith | |
| Kernbaum et al. | An ultra-compact infinitely variable transmission for robotics | |
| CN101922537A (en) | Long-cone pulley shaft controlled mechanical stepless speed-changing device | |
| US20140349800A1 (en) | Continuously variable transmission (cvt) device controlled by a geared motor | |
| CN201487150U (en) | Mechanical stepless speed change device | |
| CN201858348U (en) | Speed ratio control device of belt type continuously variable transmission | |
| CN102937170A (en) | Speed ratio control device of belt type stepless transmission capable of improving speed ratio regulation precision | |
| CN103174808A (en) | Stepless speed change device | |
| CN102011843A (en) | Tenor-drum bevel-wheel shaft-controlled mechanical stepless speed changing device | |
| CN205877100U (en) | Belt formula buncher | |
| WO2010073556A1 (en) | Friction wheel-type continuously variable transmission | |
| US9464696B2 (en) | Continuous variable transmission system and use thereof | |
| CN106043587B (en) | A kind of centrifugation automatic transimission | |
| CN202215686U (en) | Low speed rotating transmission device and robot joint utilizing same | |
| CN205078715U (en) | A take transmission system that is used for two overspeed device tensioner of drive belt and corresponding | |
| CN103775540B (en) | Duplex electromagnetic clutch | |
| CN102562980A (en) | Hydraulic stepping-up type traction transmission device | |
| CN102135163A (en) | Tenor drum conical pulley mechanical type self-adaptive continuously variable transmission (CVT) | |
| CN110985624A (en) | Hydraulic inertial container capable of realizing continuous adjustable inertial mass coefficient based on stepless speed change mechanism | |
| CN201992017U (en) | Driving belt type continuously variable transmission | |
| CN103423393A (en) | Continuously variable transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101222 |