CN203051666U

CN203051666U - Planetary gear continuously variable transmission (CVT) box

Info

Publication number: CN203051666U
Application number: CN 201220617826
Authority: CN
Inventors: 刘艳; 张象
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-07-10
Anticipated expiration: 2022-11-21

Abstract

The utility model relates to a planetary gear continuously variable transmission (CVT) box, comprising a driving module and a driven module. The driven module comprises a driven equipment gear and a driven shaft. The driving module comprises a first planetary frame and a second planetary frame; a rotating shaft is arranged between the first planetary frame and the second planetary frame and connected with an engine; and a planet wheel structure is arranged on each of the first and second planetary frames. Each planet wheel structure comprises slotted holes, T-shaped slider slots, T-shaped sliders, a planet wheel and internal taper one-way clutches, wherein the slotted holes are respectively formed in the first planetary frame and the second planetary frame and are corresponding to each other; the T-shaped slider slots are arranged at the slotted holes; the T-shaped sliders are arranged in the T-shaped slider slots; the planet wheel is arranged between two T-shaped sliders; and the internal taper one-way clutches are arranged in the slotted holes in the outer sides of the first planetary frame and the second planetary frame. A toothed transmission belt is arranged on the planet wheel and the driven equipment gear. By adopting such a way, the planetary gear CVT box has all the advantages of CVT; the problem of small torque is solved by total rigid gear transmission; the control performance is good; humanized operation is realized; and a plurality of modes are configured.

Description

A kind of planetary gear stepless speed changing case

Technical field

The utility model relates to the gearbox manufacturing in the machine industry, especially relates to a kind of planetary gear stepless speed changing case.

Background technique

At present, infinitely variable transmission is widely used in the automobile manufacture industry, stepless change (CVT) is mainly by main, follower and metal bring the stepless variation that realizes speed ratio, infinite variable speed employing has brought Economy, the positive variation of the smoothness of power character and driving, and it is more remarkable with the cost effectiveness that dispatches from the factory in exhaust gas discharging, but, existing tooth transmission (for example sliding vane oscillating tooth infinitely variable transmission) is being carried out infinite variable speed the time, the situation that can exist profile of tooth to misfit, the most advanced and sophisticated relative of the tip of gear and tooth line belt can appear, tip damages, and then cause mechanical disorder, and also existing infinitely variable transmission is because friction driving causes moment of torsion too small.

The model utility content

It is most advanced and sophisticated and solved the planetary gear stepless speed changing case that moment of torsion is crossed minor issue that technical problem to be solved in the utility model provides a kind of gear that can not damage.

The technical scheme in the invention for solving the technical problem is: a kind of planetary gear stepless speed changing case, comprise initiatively module and slave module, slave module comprises driven equipment gear and driven shaft, described active module comprises first planet carrier and second planet carrier, first planet carrier is provided with a rotatingshaft with second planet carrier centre and is connected with motor, is provided with planetary gear structure at first planet carrier and second planet carrier; Planetary gear structure comprises the slotted eye of the mutual correspondence of evenly offering on first planet carrier and second planet carrier and is emitting shape, the T type slide block slot that slotted eye place on corresponding of first planet carrier and second planet carrier offers, T type slide block in the T type slide block slot, planet wheel between two corresponding T type slide blocks of first planet carrier and second planet carrier, inner taper overrunning clutch on the slotted eye in first planet carrier and second planet carrier outside, the axle of inner taper overrunning clutch passes slotted eye and T type slide block drives planetary gear revolution, and the inner taper overrunning clutch installation direction on first planet carrier and second planet carrier is opposite; At least three of described planetary gear structures; Be provided with the tooth driving belt at planet wheel and driven equipment gear.

In order to carry out centering to planet wheel, further concrete, an end of described planet wheel is provided with tooth centering wheel, and the outside of tooth centering wheel is provided with spring, and tooth centering wheel moves axially by spline and planet wheel engagement; The profile of tooth of tooth centering wheel is big and offset row star-wheel than planet wheel.

Further concrete, an end of described tooth centering form of gear tooth tapers off to a point.

Further concrete, planet wheel between described first planet carrier and second planet carrier adopts gear or spline dentation structure, unidirectional rotation forward or backwards under the effect of inner taper overrunning clutch, perhaps pinned by the inner taper overrunning clutch of positive and negative direction, no longer rotation and first planet carrier and second planet carrier revolve round the sun together.

Further concrete, described planetary gear structure is four.

Further concrete, described first planet carrier and the second planet carrier opposing side are tapered, and second planet carrier moves axially at rotatingshaft; Described T type slide block slot cooperates along conical surface with T type slide block and slides.

The beneficial effects of the utility model are: adopted after the aforesaid way, possessed all advantages of stepless change (CVT), all rigid teeth transmissions thoroughly solve the too small problem of moment of torsion, and handling is good, can hommization operate, and various modes is set.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the initiatively structural representation of module of the utility model;

Fig. 3 is the structural representation of the utility model tooth centering wheel, planet wheel and the engagement of tooth line belt.

Among the figure: 1, first planet carrier; 2, tooth driving belt; 3, second planet carrier; 4, driven shaft; 5, driven equipment gear; 6, rotatingshaft; 7, inner taper overrunning clutch; 8, slotted eye; 9, planet wheel; 10, T type slide block; N, T type slide block slot; 12, tooth centering wheel.

Embodiment

A kind of planetary gear stepless speed changing case as depicted in figs. 1 and 2, comprise initiatively module and slave module, slave module comprises driven equipment gear 5 and driven shaft 4, described active module comprises first planet carrier 1 and second planet carrier 3, first planet carrier 1 is provided with a rotatingshaft 6 with second planet carrier, 3 centres and is connected with motor, is provided with planetary gear structure at first planet carrier 1 and second planet carrier 3; Planetary gear structure comprises the slotted eye 8 of the mutual correspondence of evenly offering on first planet carrier 1 and second planet carrier 3 and is emitting shape, the T type slide block slot 11 that slotted eye 8 places on 3 corresponding of first planet carrier 1 and second planet carriers offer, T type slide block 10 in the T type slide block slot 11, planet wheel 9 between two corresponding T type slide blocks 10 of first planet carrier 1 and second planet carrier 3, inner taper overrunning clutch 7 on the slotted eye 8 in first planet carrier 1 and second planet carrier, 3 outsides, the axle of inner taper overrunning clutch 7 passes slotted eye 8 and T type slide block 10 drives planet wheel 9 rotations, and inner taper overrunning clutch 7 installation directions on first planet carrier 1 and second planet carrier 3 are opposite; Described planetary gear structure is four; Be provided with tooth driving belt 2 at planet wheel 9 and driven equipment gear 5; One end of described planet wheel 9 is provided with tooth centering wheel 12, and the outside of tooth centering wheel 12 is provided with spring, and tooth centering wheel 12 moves axially by spline and planet wheel 9 engagements; The profile of tooth of tooth centering wheel 12 is than planet wheel 9 big and offset row star-wheels 9; The end that described tooth centering is taken turns 12 profiles of tooth tapers off to a point; Planet wheel 9 between described first planet carrier 1 and second planet carrier 3 adopts gear or spline dentation structure, unidirectional rotation forward or backwards under the effect of inner taper overrunning clutch 7, perhaps pinned by the inner taper overrunning clutch 7 of positive and negative direction, no longer rotation and first planet carrier 1 and second planet carrier 3 revolve round the sun together; Described first planet carrier 1 and second planet carrier, 3 opposing sides are tapered, and second planet carrier 3 moves axially at rotatingshaft 6; Described T type slide block slot 11 cooperates along conical surface with T type slide block 10 and slides.

Transmission principle: the circumcircle of four planet wheel 9 standard pitch circles is standard pitch circles of a virtual gear, when the number of teeth of virtual gear is integer, four planet wheels 9 are fixed by clutch, rigidity position structure or other fixed structure, profile of tooth is consistent with virtual profile of tooth, only with along with planet carrier revolves round the sun together, cannot rotation.

When the no longer rigidity locking of four planet wheels 9, can unidirectional rotation, be used for remedying the virtual tooth wheel diameter and change the profile of tooth variation that brings, when just thinking that the virtual tooth form of gear tooth is complete, planet wheel 9 just is rigidly connected, " level " of positive drive that Here it is can arrange tens to up to a hundred " levels " according to the size of the strength of gear teeth, and be similar stepless.

When the reverse inner taper overrunning clutch release of four planet wheels 9, forward inner taper overrunning clutch is still locked, and planet wheel 9 still transmits moment of torsion, simultaneously, when the number of teeth that the variation of virtual tooth wheel diameter causes was not integer, a planet wheel 9 was stressed, and other planet wheel 9 is surmounted.

During speed change, restraining rigidity location, clutch or other fixed structures of planet wheel 9 rotations does not lock in rigidity, planet wheel 9 can unidirectional rotation, and remedy the virtual gear form error that speed-change process brings because of rotation, also can lean on the conical surface and 2 frictions of tooth driving belt of planet carrier, integer tooth of the every increase of virtual gear (or minimizing), positive drive all changes one " level ", planet wheel 9 no longer rotations rigidly fixed, can not need rigidity locking in the process, rigidity locking again after speed change is finished.

The working principle of tooth centering wheel 12: original state, there is interference problem in the crown of tooth driving belt 2 over against the crown of planet wheel 9; Planet wheel 9 moves to tooth driving belt 2, and when not arriving the position of crown, the tooth of tooth centering wheel 12 has contacted the tooth of planet wheel 9; Continuation is approaching, the tooth of the tooth driving gear centering wheel 12 of tooth driving belt 2, and tooth centering wheel 12 and planet wheel 9 pass through spline engagement, angle of drive planet wheel 9 rotations, the crown of planet wheel 9 no longer faces toward the crown of tooth driving belt 2; Finish the centering process at last.If the crown of tooth centering wheel 12 is just in time aimed at the crown of tooth driving belt 2, tooth centering wheel 12 is avoided interfering according to moving axially; When no longer rotation of planet wheel 9, tooth centering wheel 12 is pulled no longer works.

It is emphasized that above is preferable implementation column of the present utility model, and every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims

1. planetary gear stepless speed changing case, comprise initiatively module and slave module, slave module comprises driven equipment gear (5) and driven shaft (4), it is characterized in that: described active module comprises first planet carrier (1) and second planet carrier (3), first planet carrier (1) is provided with a rotatingshaft (6) with second planet carrier (3) centre and is connected with motor, is provided with planetary gear structure at first planet carrier (1) and second planet carrier (3); Planetary gear structure comprises the slotted eye (8) of the mutual correspondence of evenly offering on first planet carrier (1) and second planet carrier (3) and is emitting shape, the T type slide block slot (11) that slotted eye (8) on corresponding of first planet carrier (1) and second planet carrier (3) is located to offer, T type slide block (10) in the T type slide block slot (11), planet wheel (9) between corresponding two the T type slide blocks (10) of first planet carrier (1) and second planet carrier (3), inner taper overrunning clutch (7) on the slotted eye (8) in first planet carrier (1) and second planet carrier (3) outside, the axle of inner taper overrunning clutch (7) passes slotted eye (8) and T type slide block (10) drives planet wheel (9) revolution, and inner taper overrunning clutch (7) installation direction on first planet carrier (1) and second planet carrier (3) is opposite; At least three of described planetary gear structures; Be provided with tooth driving belt (2) at planet wheel (9) and driven equipment gear (5).

2. planetary gear stepless speed changing case according to claim 1, it is characterized in that: an end of described planet wheel (9) is provided with tooth centering wheel (12), the outside of tooth centering wheel (12) is provided with spring, and tooth centering wheel (12) moves axially by spline and planet wheel (9) engagement; The profile of tooth of tooth centering wheel (12) is big and offset row star-wheel (9) than planet wheel (9).

3. planetary gear stepless speed changing case according to claim 2 is characterized in that: an end of described tooth centering wheel (12) profile of tooth tapers off to a point.

4. planetary gear stepless speed changing case according to claim 1, it is characterized in that: the planet wheel (9) between described first planet carrier (1) and second planet carrier (3) adopts gear or spline dentation structure, unidirectional rotation forward or backwards under the effect of inner taper overrunning clutch (7), perhaps pinned by the inner taper overrunning clutch (7) of positive and negative direction, no longer rotation and first planet carrier (1) and second planet carrier (3) revolve round the sun together.

5. according to claim 1 or 2 or 3 described planetary gear stepless speed changing casees, it is characterized in that: described planetary gear structure is four.

6. according to claim 1 or 2 or 3 described planetary gear stepless speed changing casees, it is characterized in that: described first planet carrier (1) and second planet carrier (3) opposing side are tapered, and second planet carrier (3) moves axially at rotatingshaft (6); Described T type slide block slot (11) cooperates along conical surface with T type slide block (10) and slides.