CN202349143U - Stepless speed change device - Google Patents
Stepless speed change device Download PDFInfo
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- CN202349143U CN202349143U CN2011204265696U CN201120426569U CN202349143U CN 202349143 U CN202349143 U CN 202349143U CN 2011204265696 U CN2011204265696 U CN 2011204265696U CN 201120426569 U CN201120426569 U CN 201120426569U CN 202349143 U CN202349143 U CN 202349143U
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- slide block
- stepless speed
- transmission body
- cone pulley
- conical pulley
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Abstract
The utility model discloses a stepless speed change device, which comprises an input conical pulley, an output conical pulley and an intermediate transmission body, wherein the axes of the input conical pulley and the output conical pulley are parallel; the orientations of the conical surfaces of the input conical pulley and the output conical pulley are opposite; and the intermediate transmission body is connected with the input conical pulley and the output conical pulley. The stepless speed change device is characterized in that the input conical pulley and the output conical pulley are respectively provided with chutes along the generatrix direction, or raised sliding rails are used for guiding the shift of longitudinal sliders in the generatrix direction, and thereby, the radius of an active wheel is changed; movable teeth loaded on the longitudinal sliders can transversally shift on the plane which is vertical to the axis of an output shaft, and thereby, the pitches of the movable teeth are adjusted immediately, so that the movable teeth can be conveniently and correctly meshed with the intermediate transmission body at different radius positions; the intermediate transmission body is provided with rigid transmission units, such as transmission teeth, rollers or the sliders; the intermediate transmission body and the longitudinal sliders are kept unchanged in relative position, and the intermediate transmission body is capable of doing mesh-type transmission between driving movable teeth and driven movable teeth along with the longitudinal shift of the longitudinal sliders on a continuously converted working diameter, and thereby, the tooth transmission stepless speed change is realized.
Description
Technical field
The utility model provides a kind of and industrial machinery, stepless speed changes devices that field of vehicles is relevant.
Background technique
Infinite variable speed mechanism is of a great variety, and the cone pulley friction driving is the most frequently used structural type, wherein; " long awl shipper pole formula " device adopts a driving belt and two parallel axes, the conical surfaces to realize the stepless change transmission towards opposite cone pulley, has clear superiorities such as simple in structure, permanent power, symmetrical speed change, but because driving belt can not twist too big; So can only adopt the very mild long awl of tapering, plant bulk and weight are all bigger, use occasion is restricted; In addition, the friction driving assembly is easy to wear, and clamping force not only requires the expenditure of energy; The power that axle and bearing are born is too big, and transmission efficiency is also high not as positive drive.
The model utility content
The purpose of the utility model provides a kind of stepless speed changes devices, overcome " long awl shipper pole formula " stepless speed changes devices size and weight greatly, the friction component quick abrasion, and skid, problem such as efficient is low.The utility model comprises input cone pulley (3), output cone pulley (6) and middle transmission body (1), has chute (11) or protruding slide rail along generatrix direction to guide vertical slide block (5) moving at generatrix direction on input cone pulley (3) and the output cone pulley (6); Vertical slide block (5) is gone up the movable tooth (4) that loads and can on perpendicular to the plane of input shaft (8) axis, laterally be moved; Active movement tooth and driven movable tooth are through carrying out transmission with middle transmission body (1) engagement.
The middle transmission body (1) of the utility model is to adopt roller or the slide block Domino conveyor track as gear unit, or ring gear, gear, cingulum, toothed chain etc. have the member of driving cog.
The utility model comprises and is used for wedge angle, circular arc or the magnetic means of instant adjustment activity tooth (4) tooth pitch.
The utility model comprises check slide block (16) and the slide block that resets (17), and check slide block (16) produces friction self-locking when the surface of contact extruding that receives its both sides, and the slide block that resets (17) does not produce friction self-locking when the surface of contact extruding that receives its both sides.
The quantity of movable tooth on the same cone pulley of the utility model, and in transmission process, be in the quantity of the movable tooth of mesh regional on the same cone pulley simultaneously, be not limited to 1.
The slide block that resets (17) of the utility model is connected with check slide block (16) through lever or pulley cable systems and produces interaction, and its reposition force is directed to centrifugal force, magnetic force or spring force, perhaps derives from the indirect drive of check slide block (16).
The utility model is when implementing speed change; Vertical slide block (5) and middle transmission body (1) with moved further cone pulley motionless; The axial position of perhaps vertical slide block (5) and middle transmission body (1) is constant and cone pulley is moving axially; The row's of employing pearl transmission device is moved in coming and going of relating to, and perhaps the kinds of drive such as leading screw, drag-line, pull bar, hydraulic pressure, pneumatics realize.
The vertical slide block (5) of the utility model and middle transmission body (1) keep synchronization-moving method to be: cross lead-in chamfered (12) and drive the opposing party and follow mobilely by initiatively moving a square tube, perhaps both sides independently move, and keep fast together simultaneously.
The joint of the utility model through clutch (21) and output cone pulley (6) and planetary pinion inner ring (24), separate, realize forward gear, neutral under the non-stop-machine situation and reverse gear between switching.
The utility model can realize that perhaps both combine control for manual control, Computerized intelligent control, can be applicable to fields such as industrial and agricultural machinery, the traffic tool through making up with the corresponding function component.
Compare with " long awl shipper pole formula " stepless speed changes devices, the utility model adopts the middle transmission body that has driving cog to replace friction belt for power transmission, because need not consider the problem on deformation of driving belt; So tapering can be bigger, thereby reduce cone length and weight, adopt the tooth transmission to replace friction driving; Help improving transmission efficiency and alleviate the transmission part heating problem, also avoided skidding, because of not needing the extra clamping force that applies; Avoid axle and shaft strength too big, also saved the energy.
Description of drawings
Fig. 1 is a speed change drive part plan view;
Fig. 2 is a speed change drive part plan view;
Fig. 3 has the various profiles of tooth of the wedge angle that leads;
Fig. 4 is the slide block plan view;
Fig. 5 is first kind of engagement of driving tooth situation;
Fig. 6 is second kind of engagement of driving tooth situation;
Fig. 7 is first kind of engagement of driven tooth situation;
Fig. 8 is second kind of engagement of driven tooth situation;
Fig. 9 is the crown lead-in chamfered;
Figure 10 is the track lead-in chamfered;
Figure 11 is at forward gear, retreats the schematic diagram that switches between retaining and the neutral.
Embodiment
With reference to Fig. 1, Fig. 2, input shaft 8 and output shaft 9 parallel placements; Input shaft 8 is fixedly connected with input cone pulley 3, and output shaft 9 is rotationally connected with output cone pulley 6; Input cone pulley 3 and output cone pulley 6 conical surfaces are towards on the contrary; Some chutes 11 of distribution on input cone pulley 3 and the output cone pulley 6 along generatrix direction, vertical slide block 5 can slide along chute 11, changes the active wheel radius thus; Vertical slide block 5 can circumferentially relatively move with movable tooth 4, thus the regulating tooth distance; Middle transmission body 1 is the slick and sly closed circulation tracks of lines, and the inside is covered with the gear unit 2 that can in track, roll or slide, and their gap can be meshed with movable tooth 4; Under engagement, movable tooth initiatively passes to passive movable tooth to power along the formation of gear unit 2.
Among the embodiment shown in Figure 1, middle transmission body 1 is the Domino conveyor track, and the gear unit 2 of its inside is a cylindrical roller, also can adopt ball, ladder cylindrical roller, slide block to wait and replace; The Domino conveyor track can be oval, oval, just round or other shape of being made up of circular arc; The dirivig member that the Domino conveyor track also can adopt ring gear, gear, cingulum, toothed chain etc. to have driving cog replaces; Chute 11 can replace with the protruding rail structure with identical guiding function.
[0017]Because movable tooth 4 is not the position that always is in gear unit 2 correct engagement, in engagement, need adjust tooth pitch.The crown of movable tooth 4 adopts angular shape, and the engagement contact position of gear unit 2 adopts circular shape, and slide relative gets into correct engaging position so that can not be in steady state during both sides' mutual extrusion.Shown in Figure 3 is various profiles of tooth with angular shape, and wherein A is the straight line wedge angle of symmetry, and B is the camber line wedge angle of symmetry, and C is that asymmetric camber line wedge angle, D are asymmetric camber line and straight line wedge angle, and the other side who is engaged with should adopt wedge angle or circular shape.The shape that both sides mesh the position also can adopt opposite combination, and the crown of promptly movable tooth 4 is circular arcs, and the engagement contact position of gear unit 2 is wedge angles.The process of adjustment engaging position also can be installed magnetic means and come boot activity tooth 4 to get into correct engaging position on middle transmission body 1.
As shown in Figure 4; The load F that movable tooth 4 receives is from the right, and as initial position, engagement adjustment each time all begins from initial position the limit position of its on the left side; Carry out transmission again after getting into the correct engagement position, leave and automatically restore to initial position behind the mesh regional and wait for the next round adjustment.The structural principle of realizing this adjustment process is---check slide block 16 contacts with the right side with the left side of movable tooth 4 respectively with the slide block 17 that resets; They connect through lever 18; The fulcrum 19 of lever is arranged on vertical slide block 5 or the movable tooth 4, and check slide block 16 can slide on lever 18 with the slide block 17 that resets; The static friction coefficient of the surface of contact of check slide block 16 and its left and right sides produces friction self-locking greater than the tangent value of the angle of these two surface of contact when check slide block 16 receives the extruding of these two surface of contact; Opposite with the situation of check slide block 16, the static friction coefficient of the surface of contact of reset slide block 17 and its left and right sides does not produce friction self-locking less than the tangent value of the angle of these two surface of contact when the slide block 17 that resets receives the extruding of these two surface of contact; The position of fulcrum 19, check slide block 16 satisfy when cone pulley rotates with the configuration of slide block 17 weight that reset, and under centrifugal action, the moment of the torque ratio check slide block 16 of the slide block 17 that resets is big, and this lever system has the trend that is rotated counterclockwise around fulcrum 19.The result that above structure causes is; When movable tooth 4 gets into mesh regional; If run into and under the extruding of gear unit 2, leave this situation of initial position (the different situations that driving cog 4 runs into when getting into mesh regional describe with reference to Fig. 5 at next section); Can overcome the centrifugal force of the slide block 17 that resets and, drive lever 18, keep in touch with movable tooth 4 in the process that check slide block 16 moves up the upwards promotion to the right of surface of contact of check slide block 16 along the left side its downward promotion; After arriving the correct engagement position, movable tooth 4 begins bearing load; The trend that the oriented initial position of meeting moves under the effect of power F; But, check slide block 16 makes mobile being obstructed because of producing self-locking; And because the pressure of 4 pairs of check slide blocks 16 of movable tooth is very big, the difference of the check slide block 16 and the centrifugal moment of the slide block 17 that resets is not enough to a check slide block 16 and down promotes to abdicate the space to movable tooth 4; When driving cog 4 leaves the meshing zone and the load disappearance; Its immense pressure to check slide block 16 also disappears thereupon; The slide block 17 that resets up moves under action of centrifugal force; Check slide block 16 can move down the space above abdicating under leverage, and meanwhile, and movable tooth 4 slide block 17 that also is reset is pushed initial position smoothly to.
With reference to Fig. 4, the direction of rotating with cone pulley is as reference, and each position component relation on the input cone pulley is to reset slide block 17 preceding, the initial position of check slide block 16 and movable tooth 4 after, and the position relation on the output cone pulley is just in time in contrast.Driving cog 4 begins to get into mesh regional but not when the correct engagement position; If previous driving cog has left mesh regional; Unaffected each other when then adjusting the engaging position, just can get into the correct engagement position smoothly forward to the extruding or backward of the gear unit 2 of current contact, if but previous driving cog does not also leave mesh regional; Several kinds of situation: Fig. 5 below then can occurring is the first kind of situation that occurs on the input cone pulley 3---when position, back movable tooth entering mesh regional begins to contact with roller; If crown is guided to the rear of this roller by cambered surface, because there is not the route of retreat thereafter, so can only be that compelled the moving forward of anteposition activity tooth left initial position; Distance between the two strengthens gradually, and movable tooth gets into the correct engagement position up to the position, back; Fig. 6 is the second kind of situation that occurs on the input cone pulley 3---when position, back movable tooth entering mesh regional begins to contact with roller; If crown is by cambered surface guiding the place ahead to this roller; Bearing load not temporarily; Compelled moving forward left initial position, and the distance between the anteposition activity tooth dwindles gradually, up to getting into the correct engagement position; Fig. 7 is the first kind of situation that occurs on the output cone pulley 6---when position, back movable tooth entering mesh regional begins to contact with roller; If crown is by the rear of cambered surface guiding to this roller; Bearing load not temporarily; Be compelled to move away initial position backward, distance between the two strengthens gradually, up to getting into the correct engagement position; Fig. 8 is the second kind of situation that occurs on the output cone pulley 6---when position, back movable tooth entering mesh regional begins to contact with roller; If crown is by cambered surface guiding the place ahead to this roller; Because of its front is exactly a limit position; Move away initial position backward so can only be that anteposition activity tooth is compelled, distance is between the two dwindled gradually, and movable tooth gets into the correct engagement position up to the position, back.When the movable tooth in back position gets into mesh regional, only change the distance of it and its anteposition activity tooth, and do not influence the distance between the anteposition of its anteposition and anteposition.No matter be to have only a movable tooth, still there are a plurality of movable teeth to be in mesh regional simultaneously, this structure can both be accomplished the engaging position adjustment and continuous proper functioning smoothly.
[0020]In structure shown in Figure 4, check slide block 16 and the lever interaction mode between the slide block 17 of resetting can use the pulley cable systems to substitute; Come in rotation, the keep up trend of motion of hold reset slide block 17 through check slide block 16 and the centrifugal moment difference between the slide block 17 of resetting; And the trend that check slide block 16 keeps down and moves, this method also can adopt magnetic force, spring force to substitute or be used in combination; Because check slide block 16 has interactive relationship with the slide block 17 that resets, so recuperabilities such as magnetic force, spring force can be applied directly to the slide block 17 or oppositely be applied on the check slide block 16 of resetting.
With reference to Fig. 1, Fig. 2; Ball 7 begins the bottom arranged distribution along chute 10 from bottom one side of vertical slide block 5, through row pearl pump 10, again by the beeline channel in the cone pulley body and other passage highway section of turning round; The last bottom opposite side of getting back to vertical slide block 5 along the bottom of chute 10; Form the loop of sealing, row pearl pump main story with reverse can drive ball 7 respectively forward, latter two direction rolls, and drives vertical slide block 5 straight line back and forth movements.Adopt the kinds of drive such as leading screw, drag-line, pull bar, hydraulic pressure, pneumatics to replace the transmission of row pearl also can realize the straight line back and forth movement of vertical slide block 5.
With reference to Fig. 1, Fig. 2, during vertical slide block 5 straight line motions, it is mobile with the cone pulley high-speed rotation that movable tooth 4 is being followed on one side, and the lead-in chamfered at its tooth top two ends (12) can promote centre transmission body 1 and move along slide rail 13.Lead-in chamfered can be as shown in Figure 9, on movable tooth 4, is provided with, and also can on middle transmission body 1, be provided with, and is shown in figure 10.Except adopting lead-in chamfered to keep vertical slide block 5 constant with middle transmission body 1 relative position in vertically moving, also can let them be connected with transmission part separately, keep same moved further.Present embodiment when speed change, vertical slide block 5 and middle transmission body 1 with moved further cone pulley motionless, also can adopt vertical slide block 5 constant and cone pulley is moving axially with middle transmission body 1 axial position.Moving of the various parts that more than relate to can be realized through row pearl, leading screw, drag-line, pull bar, pneumatics or hydraulic transmission mode.
Shown in figure 11; Output shaft 9 is rotationally connected with output cone pulley 6; Output shaft 9 and clutch 21 be employed in axially can slide relative the spline Placement; Output cone pulley 6 is fixedly connected with planetary pinion outer ring 22 through contiguous block 20, and dead axle planetary pinion 23 meshes with planetary pinion outer ring 22 and planetary pinion inner ring 24 respectively.Clutch 21 moves forward when exporting cone pulley 6 and engage, output shaft 9 main storys, and when clutch 21 moved backward and engages with planetary pinion inner ring 24, output shaft 9 reversed, and mediating then is neutral.Only need to move clutch 21 just can realize forward gear, neutral under the non-stop-machine situation and reverse gear between switching.
Claims (9)
1. stepless speed changes devices; Comprise input cone pulley (3), output cone pulley (6) and middle transmission body (1), it is characterized in that importing the chute (11) or the protruding slide rail that have on cone pulley (3) and the output cone pulley (6) along generatrix direction and guide vertical slide block (5) moving at generatrix direction; Vertical slide block (5) is gone up the movable tooth (4) that loads and can on perpendicular to the plane of input shaft (8) axis, laterally be moved; Active movement tooth and driven movable tooth are through carrying out transmission with middle transmission body (1) engagement.
2. stepless speed changes devices according to claim 1, transmission body (1) is Domino conveyor track, ring gear, gear, cingulum or toothed chain in the middle of it is characterized in that, wherein, the Domino conveyor track adopts roller or slide block as gear unit.
3. stepless speed changes devices according to claim 2 is characterized in that comprising and is used for wedge angle, circular arc or the magnetic means of instant adjustment activity tooth (4) tooth pitch.
4. stepless speed changes devices according to claim 3; It is characterized in that comprising check slide block (16) and the slide block that resets (17); Check slide block (16) produces friction self-locking when the surface of contact extruding that receives its both sides, and the slide block that resets (17) does not produce friction self-locking when the surface of contact extruding that receives its both sides.
5. stepless speed changes devices according to claim 4 is characterized in that the quantity of movable tooth on the same cone pulley, and in transmission process, is in the quantity of the movable tooth of mesh regional on the same cone pulley simultaneously, is not limited to 1.
6. stepless speed changes devices according to claim 5; The slide block (17) that resets is connected with check slide block (16) through lever or pulley cable systems and produces interaction; Its reposition force is directed to centrifugal force, magnetic force or spring force, perhaps derives from the indirect drive of check slide block (16).
7. stepless speed changes devices according to claim 6; It is characterized in that when implementing speed change; Vertical slide block (5) and middle transmission body (1) with moved further cone pulley motionless; The axial position of perhaps vertical slide block (5) and middle transmission body (1) is constant and cone pulley is moving axially, and the row of employing pearl, leading screw, drag-line or the realization of the pull bar kind of drive are moved in coming and going of relating to.
8. stepless speed changes devices according to claim 7; It is characterized in that; Vertical slide block (5) keeps synchronization-moving method to be with middle transmission body (1): cross lead-in chamfered (12) and drive the opposing party and follow mobilely by initiatively moving a square tube, perhaps both sides independently move, and keep the while fast together.
9. stepless speed changes devices according to claim 8, it is characterized in that through clutch (21) and output cone pulley (6) and planetary pinion inner ring (24) joint, separate, realize forward gear, neutral under the non-stop-machine situation and reverse gear between switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204265696U CN202349143U (en) | 2011-11-02 | 2011-11-02 | Stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204265696U CN202349143U (en) | 2011-11-02 | 2011-11-02 | Stepless speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349143U true CN202349143U (en) | 2012-07-25 |
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ID=46538150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204265696U Expired - Fee Related CN202349143U (en) | 2011-11-02 | 2011-11-02 | Stepless speed change device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202349143U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202143A (en) * | 2014-06-10 | 2015-12-30 | 本田技研工业株式会社 | Automotive power transmission device |
| TWI702167B (en) * | 2015-11-18 | 2020-08-21 | 波蘭商艾弗奈歐股份有限公司 | Freewheel mechanism |
| CN115030894A (en) * | 2022-07-20 | 2022-09-09 | 无锡耀创机械设备有限公司 | Dead gear pump of anti-sticking |
-
2011
- 2011-11-02 CN CN2011204265696U patent/CN202349143U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202143A (en) * | 2014-06-10 | 2015-12-30 | 本田技研工业株式会社 | Automotive power transmission device |
| CN105202143B (en) * | 2014-06-10 | 2018-03-09 | 本田技研工业株式会社 | Power transmission apparatus for vehicle |
| TWI702167B (en) * | 2015-11-18 | 2020-08-21 | 波蘭商艾弗奈歐股份有限公司 | Freewheel mechanism |
| CN115030894A (en) * | 2022-07-20 | 2022-09-09 | 无锡耀创机械设备有限公司 | Dead gear pump of anti-sticking |
| CN115030894B (en) * | 2022-07-20 | 2024-05-17 | 无锡博兴瑞科技有限公司 | Prevent dead gear pump of card |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121102 |