CN202132457U - Non-sliding type stepless speed change device - Google Patents
Non-sliding type stepless speed change device Download PDFInfo
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- CN202132457U CN202132457U CN201120187707U CN201120187707U CN202132457U CN 202132457 U CN202132457 U CN 202132457U CN 201120187707 U CN201120187707 U CN 201120187707U CN 201120187707 U CN201120187707 U CN 201120187707U CN 202132457 U CN202132457 U CN 202132457U
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Abstract
The utility model discloses a non-sliding type stepless speed change device, which belongs to the technical field of transmission devices. A rolling friction variable speed transmission mechanism is arranged between a driving friction disc and a driven friction disc which are arranged in parallel in an off-axis manner; the friction speed change mechanism is a ball disc friction speed change mechanism or a wheel disc friction speed change mechanism; and the transmission ratio can be changed through changing the ratio of the distances from the contact point of the friction speed change mechanism and the driving friction disc and the contact point of the friction speed change mechanism and the driving friction disc to a driving shaft and to a driven shaft respectively. The non-sliding type stepless speed change device solves the defect that the existing various stepless speed change devices can not eliminate the relative slipping between the friction surfaces through changing the sliding between the friction surfaces to the rolling of balls, so as to decrease abrasion between components, simultaneously eliminates the continuously-changing transmission ratio in case of relative sliding between the transmission components, improves the transmission efficiency, operates reliably, has wide regulating range in the transmission ratio, simple structure and low cost.
Description
Technical field
The utility model relates to a kind of stepless speed changes devices, relates in particular to a kind of fricton-tight formula stepless speed changes devices, belongs to the variable speed drive technical field.
Background technique
Stepless speed variator is the continuously adjustable mechanical transmission of a kind of velocity ratio, owing to can adapt to the changeable or rotating speed continually varying requirement of operating mode in the machine operation procedure, is widely used in all kinds of machinery, particularly is successfully applied to automotive transmission in recent years.
Stepless speed variator is a kind of desirable transmission device, but structure more complicated in general, and cost is higher.With the automobile speed-changing device is example, and automobile speed-changing device is divided into manual gear shifting and automatic transimission two big classes.Manual gear shifting is with many gear to be changed combination between each gear to change its velocity ratio through manual control; Thereby reach the purpose of speed change, the advantage of manual gear shifting is simple in structure, and cost is low; Transmission efficiency is high; Deficiency is to realize the continuously smooth stepless change, handles to require height, drives inconvenient.
Automatic stepless speed-changing device has three kinds of modes at present: first kind of employing fluid torque converter and multi-stage mechanical speed change gear, its advantage are to start steadily, simplify the operation, and deficiency is a complex structure, make and maintenance cost high; Second kind is adopted hydraulic pressure or electrical servo device to replace manual control, has following deficiency: the one, and manufacture cost is high, and if misoperation, the probability that goes wrong is higher, and maintenance cost is high; The 2nd, the aufbauprinciple of existence and the defective of mechanical wear because it is flexible coupling, the steel band of transmission can not bear bigger moment of torsion, easy-rupturing, reliability can not get sufficient assurance; The 3rd, chucking power is crossed conference and is consumed part power, and the too small meeting of chucking power is skidded easily; The 4th, 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.The most basic problem is, changes in the process of velocity ratio, exists the slide relative that can not eliminate between V-shape belt and the belt pulley, has greatly influenced the life-span and the peak output that can transmit of device.
Though people constantly improve driving belt,, the promotion and application of infinitely variable speed transmission have been limited because the problems referred to above can not be solved.
The model utility content
The utility model provides a kind of fricton-tight formula stepless speed changes devices, can solve complex structure in the existing automatic stepless speed-changing device, cost of production is high, reliable transmission property is low and transmission part between have the defective of skidding.
Fricton-tight formula stepless speed changes devices comprises driving shaft, driven shaft, active friction disk, driven friction disk and friction variable speed mechanism; Wherein: driving shaft and driven shaft lay respectively at the axle center of active friction disk and driven friction disk; Active friction disk and the mutual horizontal arrangement of driven friction disk, friction variable speed mechanism is arranged between active friction disk and the driven friction disk and keeps in touch with the bottom surface of active friction disk and the upper surface of driven friction disk simultaneously.
The diameter of driven friction disk is two times of active friction disk diameter, and the axle center of driving shaft is positioned at driven friction disk radius 1/2nd places, and initiatively the circle centre position of friction disk can be provided with circular groove, to reach the effect of cutting off power.
Friction variable speed mechanism is ball dish friction variable speed mechanism or disk friction gear, and ball dish friction variable speed mechanism comprises two friction driving balls, retainer and connecting rods; Two friction driving balls are provided with up and down and are coated and supported by retainer; Be connected with the speed regulating mechanism of outside behind the two ends of connecting rod connection retainer, move the realization stepless change through speed regulating mechanism and connecting rod control ball dish friction variable speed mechanism straight line between active friction disk and driven friction disk; Can select to install roller to reduce energy loss between retainer and the friction driving ball surface of contact.
The disk friction gear comprises two friction drive wheels, inner support, bearing, support arm drive unit and guide rail; Two friction drive wheels are fixed on inner support inside up and down through rotating shaft respectively, and two friction drive wheels contact with each other and compress with the upper surface maintenance of the bottom surface of active friction disk and driven friction disk simultaneously and contact; Bearing Installation is internal stent outside; Bearing outer ring is fixedly connected with support arm; Inner support is sleeved on bearing inner race inside and is fixedly connected with bearing inner race; Inner support, bearing inner race and friction drive wheel relatively whole and bearing outer ring and support arm rotation, its rotation angle is by driving device controls, and support arm and guide rail are slidingly matched.
In addition, on the circumferential surface of driven friction disk, be uniformly distributed with plural active friction disk, cooperate the friction variable speed mechanism parallel connection of corresponding number, can reduce the pressure that single point of contact bears, increase transmission power, improve life-span and reliability.
Because it is bigger that active friction disk and driven friction disk take up room, two cones that adopt bus to laterally arrange replace initiatively friction disk and driven friction disk, but the volume of reducing mechanism.
Working principle: friction variable speed mechanism can only be in the plane at driving shaft and driven shaft place rectilinear translation; Position through adjustment friction variable speed mechanism; Promptly change friction variable speed mechanism and initiatively the point of contact of friction disk and driven friction disk respectively apart from the ratio of the distance between driving shaft and the driven shaft; Just change velocity ratio, thereby realized stepless change; When the point of contact of friction variable speed mechanism and friction disk initiatively to the center of circle of active friction disk near the time driven friction disk be retarded motion; When point of contact is positioned at the center of circle of active friction disk; Driven friction disk speed is zero; When point of contact was crossed the center of circle of active friction disk, the driven shaft sense of rotation was reverse, promptly gets into the reverse gear state; Point of contact is during away from the center of circle of active friction disk, and driven friction disk is retarded motion.
When friction variable speed mechanism is ball dish friction variable speed mechanism; Upper and lower two friction driving balls closely cooperate with active friction disk and driven friction disk respectively in the retainer; Tangent line rolling through two friction driving balls is passed to driven friction disk to power from the active friction disk, thereby realizes the function of transmission.In the process that changes velocity ratio, in theory there is not slide relative in the rubbing contact point between dish and ball, ball and the ball, therefore with respect to existing structure tangible life-span advantage is arranged, and has improved efficient, has reduced the energy loss in the speed-change process.
When friction variable speed mechanism is the disk friction gear; Deflection angle through the driving device controls inner support; Under the driving force effect of active friction disk, make support arm along the guide rail translation; And then the point of contact that changes disk friction gear and active friction disk and driven friction disk just changes velocity ratio respectively apart from the ratio of the distance between driving shaft and the driven shaft; Wherein the inner support deflection angle determines the displacement amount of support arm on guide rail, and the inner support deflection angle is drawn after calculating by the speed probe that is arranged on driving shaft and the driven axle.In the process that changes velocity ratio, when the deflection angle of inner support remained unchanged, in theory there was not slide relative in the rubbing contact point between dish and wheel, wheel and the wheel yet.
Beneficial effect:
1, the utility model does not exist existing various stepless speed changes devices to be used for the slide relative between the rubbing surface of transferring power, but through changing into the slip of rubbing surface the rolling of ball, the gear ratio regulation range is big, and is simple in structure, and cost is low.
2, manipulation is single.Only be that the linear position of retainer or the deflection angle of inner support are handled, can reach the velocity ratio of expectation.
3, component wear is little, and kinetic equation loss is low, and transmission efficiency is high.
4, speed change is level and smooth, and is little to the impact of mechanical part when operation, alleviated the unsmooth phenomenon of speed change
5, can integrated reverse gear.
Therefore the utility model is suitable for promoting the use of at machinery and Motor Vehicle manufacturing.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model;
Fig. 2 is the disk friction gear structural representation of the utility model;
Fig. 3 is the schematic three dimensional views of the disk friction gear (no guide rail) of the utility model.
Wherein, the 1-driving shaft, 2-is friction disk initiatively, 3-driven shaft, 4-driven friction disk; The 5-retainer, 6-connecting rod, 7-friction driving ball I, 8-friction driving ball II, 9-inner support; The 10-guide rail, 12-friction drive wheel I, 13-friction drive wheel II, 14-bearing, 15-support arm.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
Shown in accompanying drawing 1, the fricton-tight formula stepless speed changes devices of the utility model comprises driving shaft 1, driven shaft 3, active friction disk 2, driven friction disk 4 and friction variable speed mechanism; Wherein: driving shaft 1 and driven shaft 3 lay respectively at the axle center of active friction disk 2 and driven friction disk 4; Active friction disk 2 and driven friction disk 4 mutual horizontal arrangement, friction variable speed mechanism is arranged between active friction disk 2 and the driven friction disk 4 and keeps in touch with the bottom surface of active friction disk 2 and the upper surface of driven friction disk 4 simultaneously.
The diameter of driven friction disk 4 is two times of active friction disk 2 diameters, and the axle center of driving shaft is positioned at driven friction disk radius 1/2nd places, and initiatively the circle centre position of friction disk 2 can be provided with circular groove, to reach the effect of cutting off power;
Friction variable speed mechanism is ball dish friction variable speed mechanism or disk friction gear, and shown in accompanying drawing 1, ball dish friction variable speed mechanism comprises friction driving ball I 7, friction driving ball II8, retainer 5 and connecting rod 6; Friction driving ball I 7 is provided with up and down with friction driving ball II8 and by retainer 5 coatings and support; Connecting rod 6 be horizontally set on initiatively between the friction disk 2 and driven friction disk 4 and connect the two ends of retainer 5 after is connected with the speed regulating mechanism of outside, control ball dish friction variable speed mechanism straight lines between active friction disk 2 and driven friction disk 4 through speed regulating mechanism and connecting rod 6 and move the realization stepless change; Can select to install roller to reduce energy loss between retainer 5 and friction driving ball I 7 and the friction driving ball II8 surface of contact.
The disk friction gear comprises friction drive wheel I 12, friction drive wheel II13, inner support 9, bearing 14, support arm 15, drive unit and guide rail 10; Friction drive wheel I 12 and friction drive wheel II13 are fixed on inner support 9 inside up and down through rotating shaft respectively, and friction drive wheel I 12 and friction drive wheel II13 contact with each other and keep in touch with the bottom surface of active friction disk 2 and the upper surface of driven friction disk 4 respectively; Bearing 14 is installed in support arm 15 inside; Bearing 14 outer rings are fixedly connected with support arm 15; Inner support 9 is sleeved on bearing 14 inner rings inside and is fixedly connected with bearing 14 inner rings; Inner support 9, bearing 14 inner rings, friction drive wheel I 12 and friction drive wheel II13 relatively whole and bearing 14 outer rings and support arm 15 rotations, its rotation angle is by the driving device controls that is fixedly mounted on the support arm, and support arm 15 is slidingly matched with guide rail 10.
In addition, on the circumferential surface of driven friction disk 4, be uniformly distributed with plural active friction disk 2, cooperate the friction variable speed mechanism parallel connection of corresponding number, can reduce the pressure that single point of contact bears, increase transmission power, improve life-span and reliability.
Because it is bigger that active friction disk 2 and driven friction disk 4 take up room, two cones that adopt bus to laterally arrange replace initiatively friction disk 2 and driven friction disk 4, but the volume of reducing mechanism.
Working principle: friction variable speed mechanism can only be in the plane at driving shaft 1 and driven shaft 3 places rectilinear translation; Position through adjustment friction variable speed mechanism; Promptly change friction variable speed mechanism and initiatively the point of contact of friction disk 2 and driven friction disk 4 respectively apart from the ratio of the distance between driving shaft 1 and the driven shaft 3; Just change velocity ratio, thereby realized stepless change; When the point of contact of friction variable speed mechanism and friction disk 2 initiatively to the center of circle of active friction disk 2 near the time driven friction disk 4 be retarded motion; When point of contact is positioned at the center of circle of active friction disk 2; Driven friction disk 4 speed are zero; When point of contact was crossed the center of circle of active friction disk 2, the driven shaft sense of rotation was reverse, promptly gets into the reverse gear state; Point of contact is during away from the center of circle of active friction disk 2, and driven friction disk 4 is retarded motion.
When friction variable speed mechanism is ball dish friction variable speed mechanism; Friction driving ball I 7 closely cooperates with active friction disk 2 and driven friction disk 4 respectively with friction driving ball II8 in the retainer 5; Tangent line rolling through friction driving ball I7 and friction driving ball II8 is passed to driven friction disk 4 to power from active friction disk 2, thereby realizes the function of transmission; In the process that changes velocity ratio, in theory there is not slide relative in the rubbing contact point between dish and ball, ball and the ball, therefore with respect to existing structure tangible life-span advantage is arranged, and has improved efficient, has reduced the energy loss in the speed-change process.
When friction variable speed mechanism is the disk friction gear; Deflection angle through driving device controls inner support 9; Under the driving force effect of active friction disk 2, make support arm 15 along guide rail 10 translations; And then the point of contact that changes disk friction gear and active friction disk 2 and driven friction disk 4 just changes velocity ratio respectively apart from the ratio of the distance between driving shaft 1 and the driven shaft 3; The displacement amount of inner support 9 deflection angles decisions support arm 15 on guide rail 10 wherein, inner support 9 deflection angles are measured in real time after calculating with the speed probe on the driven axle 3 and are drawn by being arranged on driving shaft 1.
In the process that changes velocity ratio, when the deflection angle of inner support 9 remained unchanged, in theory there was not slide relative in the rubbing contact point between dish and wheel, wheel and the wheel yet.
Claims (9)
1. fricton-tight formula stepless speed changes devices comprises driving shaft (1), driven shaft (3), active friction disk (2), driven friction disk (4) and friction variable speed mechanism; It is characterized in that said driving shaft (1) and driven shaft (3) lay respectively at the axle center of active friction disk (2) and driven friction disk (4); Friction disk (2) and driven friction disk (4) horizontal arrangement each other initiatively, friction variable speed mechanism is arranged on initiatively between the friction disk (2) and driven friction disk (4) and the upper surface maintenance of the bottom surface of while and active friction disk (2) and driven friction disk (4) compresses and contacts.
2. fricton-tight formula stepless speed changes devices as claimed in claim 1, the diameter that it is characterized in that said driven friction disk (4) are two times of active friction disk (2) diameter, and the axle center of driving shaft is positioned at driven friction disk radius 1/2nd places.
3. according to claim 1 or claim 2 fricton-tight formula stepless speed changes devices is characterized in that the circle centre position of said active friction disk (2) is provided with circular groove.
4. fricton-tight formula stepless speed changes devices as claimed in claim 1 is characterized in that said friction variable speed mechanism is ball dish friction variable speed mechanism or disk friction gear.
5. like claim 1 or 4 described fricton-tight formula stepless speed changes devicess, it is characterized in that said ball dish friction variable speed mechanism comprises friction driving ball I (7), friction driving ball II (8), retainer (5) and connecting rod (6); Friction driving ball I (7) and friction driving ball II (8) are provided with up and down and are coated and supported by retainer (5); Connecting rod (6) is horizontally set between active friction disk (2) and the driven friction disk (4) and behind the two ends of connection retainer (5) and is connected with the speed regulating mechanism of outside, moves the realization stepless change through speed regulating mechanism and connecting rod (6) control ball dish friction variable speed mechanism straight line between active friction disk (2) and driven friction disk (4).
6. fricton-tight formula stepless speed changes devices as claimed in claim 5 is characterized in that between said retainer (5) and friction driving ball I (7) and friction driving ball II (8) surface of contact roller being installed.
7. like claim 1 or 4 described fricton-tight formula stepless speed changes devicess; It is characterized in that said disk friction gear comprises friction drive wheel I (12), friction drive wheel II (13), inner support (9), bearing (14), support arm (15), drive unit and guide rail (10); Friction drive wheel I (12) and friction drive wheel II (13) are fixed on inner support (9) inside up and down through rotating shaft respectively, and friction drive wheel I (12) contacts with each other with friction drive wheel II (13) and keeps compressing contacting with the bottom surface of active friction disk (2) and the upper surface of driven friction disk (4) respectively; Bearing (14) is installed in support arm (15) inside; Bearing (14) outer ring is fixedly connected with support arm (15); Inner support (9) is sleeved on bearing (14) inner ring inside and is fixedly connected with bearing (14) inner ring; Inner support (9), bearing (14) inner ring, friction drive wheel I (12) and friction drive wheel II (13) relatively whole and bearing (14) outer ring and support arm (15) rotation, its rotation angle is by the driving device controls that is fixedly mounted on the support arm (15), and support arm (15) is slidingly matched with guide rail (10).
8. fricton-tight formula stepless speed changes devices as claimed in claim 1 is characterized in that on the circumferential surface of driven friction disk (4), being uniformly distributed with plural active friction disk (2), cooperates the friction variable speed mechanism parallel connection of corresponding number.
9. fricton-tight formula stepless speed changes devices as claimed in claim 1 is characterized in that two cones that said active friction disk (2) and the available bus of driven friction disk (4) laterally arrange replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120187707U CN202132457U (en) | 2011-06-03 | 2011-06-03 | Non-sliding type stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120187707U CN202132457U (en) | 2011-06-03 | 2011-06-03 | Non-sliding type stepless speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132457U true CN202132457U (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120187707U Expired - Fee Related CN202132457U (en) | 2011-06-03 | 2011-06-03 | Non-sliding type stepless speed change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132457U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808909A (en) * | 2011-06-03 | 2012-12-05 | 袁啸宇 | Non-slip type stepless speed change device |
| CN104141752A (en) * | 2014-07-10 | 2014-11-12 | 占舒婷 | Ball-meshed continuously variable transmission |
| CN107061652A (en) * | 2017-04-21 | 2017-08-18 | 大连理工大学 | Stepless speed change device |
-
2011
- 2011-06-03 CN CN201120187707U patent/CN202132457U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808909A (en) * | 2011-06-03 | 2012-12-05 | 袁啸宇 | Non-slip type stepless speed change device |
| CN102808909B (en) * | 2011-06-03 | 2015-04-15 | 袁啸宇 | Non-slip type stepless speed change device |
| CN104141752A (en) * | 2014-07-10 | 2014-11-12 | 占舒婷 | Ball-meshed continuously variable transmission |
| CN107061652A (en) * | 2017-04-21 | 2017-08-18 | 大连理工大学 | Stepless speed change device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20150603 |
|
| EXPY | Termination of patent right or utility model |