CN209569277U - A kind of two-way controllable overrunning clutch - Google Patents

Abstract

The utility model discloses a kind of novel two-way controllable overrunning clutchs, the clutch is made of Bidirectional power transmission mechanism and hydrodynamic regulation mechanism, wherein operate the rudder mechanism of the design with positioning SMA spring and tension SMA in hydrodynamic regulation mechanism, utilize the characteristic of SMA heat shrinkable, control positioning SMA spring and SMA energizations of tension are heated, and then realize that hydrodynamic regulation mechanism controls Bidirectional power transmission mechanism breast wheel is moved forward and backward, and then it controls breast wheel and the engagement of front and back wheel or separates, at the same time, the contrary common unidirectional mechanical bearing of two engagements designed in Bidirectional power transmission mechanism realizes the back transfer in power two lines.The utility model is by appropriate application the advantages of SMA material into clutch designs, to realize power transmitting one-way or bi-directional from prime mover to working machine, and one way engagement mode four Mode integratings such as is engaged into one with two-way, have the characteristics that lightweight, energy conservation and multiple functional.

Description

A kind of two-way controllable overrunning clutch

Technical field

The utility model belongs to the technical field that intellectual material is combined with vehicle transmission structure, and in particular to a kind of two-way Controllable freewheel clutch.

Background technique

Marmem (Shape Material Alloy, abbreviation SMA) is can to restore preboarding after a kind of heating The intellectual material of shape, reversible " memory " deformation can occurs in it under the action of temperature field.That is SMA object is to be heated to its critical It can restore original heat treatment shape when more than transition temperature, the contraction of shape such as occurs, and SMA object faces being cooled to it When below boundary's transition temperature, state when original cold temperature can be replied, the elongation of shape such as occurs, is summarized as it with reversible Crystalline transition.Meanwhile marmem has two kinds of forms of silk thread and spring, wherein the highest strain of SMA silk thread is reachable 7% -9%, but can produce the higher recovery stress greater than 500MPa；The shrinkage stress of SMA spring is smaller, can achieve several Ten megapascal, but its contraction strain is up to 90% or so.If SMA material is applied in driving other equipment, linear SMA silk thread High stress can be exported, the SMA spring of spring like can export Large strain, and have and can provide mute drive environment and high The advantages that specific power.

Mono-directional overrun clutch is also known as unilateral bearing, it be between prime mover and working machine or machine inside actively The important component of power transmitting and break function is realized between axis and driven shaft.Mono-directional overrun clutch utilizes driving and driven part Velocity variations or direction of rotation transformation, Lai Shixian clutch function, rely on be unidirectional locking principle, the transmitting of torque is It is unidirectional.But as freewheel clutch uses the continuous expansion in field, the demand to its multifunction is also higher and higher, tradition Clutch operating mode it is more single, be unable to satisfy between prime mover and working machine to the one-way or bi-directional of clutch power The needs of the multiple-working modes such as transmitting.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, the utility model provides a kind of two-way controllable overrunning clutch And its control method, it is unidirectional from prime mover to working machine to realize by appropriate application the advantages of SMA material into clutch designs Or two-way power transmitting, and one way engagement mode four Mode integratings such as is engaged into one with two-way, there is lightweight, save Can and it is multiple functional the features such as.In conjunction with Figure of description, the technical solution of the utility model is as follows:

A kind of two-way controllable overrunning clutch, is made of Bidirectional power transmission mechanism and hydrodynamic regulation mechanism；

In the Bidirectional power transmission mechanism, input shaft 1, wheel for inputting 9 are sequentially coaxially fixedly connected with breast wheel 10, front-wheel 5 and rear-wheel 14 be coaxially mounted to 10 front and rear sides of breast wheel, and friction is respectively equipped between front-wheel 5 and rear-wheel 14 and breast wheel 10 Piece, preceding power wheel 2 is coaxially connected by common unidirectional mechanical bearing I 4 and front-wheel 5, and rear power wheel 16 passes through common unidirectional mechanical Bearing II 15 and rear-wheel 14 are coaxially connected, and common unidirectional mechanical bearing I 4 engages direction phase with common unidirectional mechanical bearing II 15 Instead, before intermediate power wheel 108 is coaxially connected between power wheel 2 and rear power wheel 16, output wheel 17 and rear power wheel 16 are coaxial It is connected；

In the hydrodynamic regulation mechanism, the inner headed face of three groups of ring-shaped guide rails respectively with front-wheel 5, breast wheel 10 and rear-wheel 14 Periphery axial restraint, four groups of mechanisms 107 of operating the rudder are uniformly distributed by workbench respectively and are mounted on the outer of three groups of ring-shaped guide rails On disc, advance and retreat resetting-mechanism is equipped between the end face of three groups of ring-shaped guide rails, so that ring-type of the more intermediate annular guide rail in two sides is led Slide axially reset between rail；

In the mechanism 107 of operating the rudder, bar 204 of operating the rudder is located on the corresponding workbench of breast wheel 10, and with swing guide rail 206 Rotate coaxially connection, the positioning SMA spring one end for 204 front and back side of bar setting of operating the rudder and operating the rudder is connected at the top of bar 204, the other end with Workbench on corresponding side ring-shaped guide rail is connected, and 204 front and rear sides of bar of operating the rudder are equipped with flank obliquely, swing guide rail 206 Front and back side matches connection with tension grip respectively, and drawing has been respectively fixedly connected between 206 front and back side of swing guide rail and corresponding tension grip It is SMA tight, the opposite sliding between swing guide rail 206 and tension grip in the case where tensing SMA drives, in 206 front and back of swing guide rail Leaf spring is respectively equipped between side lower surface and corresponding workbench；

The positioning SMA spring and tension SMA are all made of SMA material, have heat shrinkable, the cooling characteristic restored；

The axial displacement between three groups of ring-shaped guide rails is controlled by the mechanism 107 of operating the rudder in the hydrodynamic regulation mechanism Control breast wheel 10 is combined or is separated between front-wheel 5 or rear-wheel 14.

Further, by several groups, circumferentially equally distributed supporting slider mechanism divides the inner headed face of three groups of ring-shaped guide rails Not with the periphery axial restraint of front-wheel 5, breast wheel 10 and rear-wheel 14；

The supporting slider mechanism is made of the supporting slider 109 of three root knot structures, one end difference of three supporting sliders 109 It is fixed on by screw thread pair on the periphery of front-wheel 5, breast wheel 10 and rear-wheel 14, the other end difference of three supporting sliders 109 In the annular groove on the inside of three groups of ring-shaped guide rails.

Further, advance and retreat resetting-mechanism described in several groups is along the circumferential direction distributed on the end face of three groups of ring-shaped guide rails；

The advance and retreat resetting-mechanism is made of advance and retreat guide rail 103, return spring I 102 and return spring II 101, it is described into The end face that guide rail 103 is moved back perpendicular to three groups of ring-shaped guide rails is arranged, and advance and retreat guide rail 103 is through intermediate ring-shaped guide rail, advance and retreat guide rail 103 one end is fixed on the ring-shaped guide rail of front side, and the other end is fixed on the ring-shaped guide rail of rear side, and return spring I 102 is set with On advance and retreat guide rail 103 between front side ring-shaped guide rail and more intermediate annular guide rail, return spring II 101 is sleeved on more intermediate annular and leads On advance and retreat guide rail 103 between rail and rear side ring-shaped guide rail, the structure of the return spring I 102 and return spring II 101 is complete It is identical.

Further, the outside of the positioning SMA spring is equipped with heat-barrier material.

Further, the lower section of the bar 204 of operating the rudder is rotary axle box, is equipped with a light vertically in the top of rotary axle box Bar, the two sides of rotary axle box are symmetrically arranged with the front side wing and posterior area of fixigena obliquely；

The centre of the swing guide rail 206 is the rotation connection plate being axially and symmetrically arranged, and is rotatablely connected the radially opposite sides of plate It is symmetrically arranged with the track of line style, is provided with line style groove, the rotation of swing guide rail 206 along rail length direction among two siding tracks The rotary axle box of connecting plate and bar 204 of operating the rudder is rotatablely connected by a concentric rotation axis, and the both ends of the rotary shaft pass through branch Frame is installed on the workbench, and the axial direction of the rotary shaft and the axial direction of ring-shaped guide rail are perpendicular；

One end of the tension grip is equipped with claw, and the other end is equipped with the cunning to match with 206 liang of siding tracks of swing guide rail Slot, two tension grips match grafting with 206 two sides of swing guide rail respectively, are provided with line style along its length in the detent ends of tension grip Groove；

The line style bottom portion of groove for tensing SMA one end and being fixed on the corresponding siding track of swing guide rail 206, the other end are fixed In the line style bottom portion of groove of respective side tension grip.

Further, the workbench is arc bridge-like structure, and three groups of ring-shaped guide rails respectively correspond three workbench of installation, The periphery of workbench and ring-shaped guide rail matches, and workbench two sides bridge plate passes through fastening screw respectively and is fixed on ring-shaped guide rail On both sides of the face.

Compared with prior art, the beneficial effects of the utility model are as follows:

1, the mechanism of operating the rudder of two-way controllable overrunning clutch described in the utility model is using positioning SMA spring and tension SMA structures, ingenious " memory " characteristic using SMA (marmem) this intellectual material, i.e., to positioning SMA spring with When tensing SMA heatings, deformation occurs, and when condition is restored, deformation restores to the original state, by SMA bullet of transposing during this Spring and the lines movement for tensing SMA flexible generations are used as driving source, and the power mode is novel, and shape memory alloy material weight It is extremely light, be conducive to the lightweight of two-way controllable overrunning clutch.

2. two-way controllable overrunning clutch control described in the utility model passes through positioning SMA spring and tension SMA Electric current realizes the switching of different dynamic transfer mode, and electric current is light current, only several amperes, Weak magentic-field is generated, for it The disturbance of his equipment or environment is smaller, is compared to the patent No.: the two-way controllable overrunning clutch that CN104595381A is mentioned, It is the switching for realizing different dynamic transfer mode using control electromagnetic coil, strong electromagnetic interference can be generated to environment.

3. two-way controllable overrunning clutch described in the utility model is made using friction engagement process heat production between rubbing surface With tensing SMA, can self-excitation engagement tense, reducing to be powered causes to tense the SMA electric energy shunk, with energy-conserving action.

4. the Bidirectional power transmission mechanism in two-way controllable overrunning clutch described in the utility model has two power to pass Route is passed, there is a common unidirectional mechanical bearing in every route, mono-directional overrun clockwise, unidirectional counterclockwise can be realized Surmount, four kinds of operating conditions including bidirectional overtaking and two-way conjunction, there is the advantages of integrated level is high, structure novel.

Detailed description of the invention

Fig. 1 is the explosive decomposition figure of two-way controllable overrunning clutch described in the utility model；

Fig. 2 is the structural schematic diagram of hydrodynamic regulation mechanism in two-way controllable overrunning clutch described in the utility model；

Fig. 3 is the cross-sectional view of two-way controllable overrunning clutch described in the utility model；

Fig. 4 is the partial enlarged view for mechanism of operating the rudder in two-way controllable overrunning clutch described in the utility model；

Fig. 5 is the explosive decomposition figure for mechanism of operating the rudder in two-way controllable overrunning clutch described in the utility model；

Fig. 6 is the main view for mechanism of operating the rudder in two-way controllable overrunning clutch described in the utility model；

Fig. 7 is the structural schematic diagram for bar of operating the rudder in two-way controllable overrunning clutch described in the utility model；

Fig. 8 is the structural schematic diagram of swing guide rail in two-way controllable overrunning clutch described in the utility model；

Fig. 9 is two-way controllable overrunning clutch general assembly appearance diagram described in the utility model.

In figure:

1 input shaft, power wheel before 2,3 roller bearings, 4 common unidirectional mechanical bearings I,

5 front-wheels, 6 friction plates I, 7 friction plates II, 8 fastening screws I,

9 wheel for inputting, 10 breast wheels, 11 hydrodynamic regulation mechanisms, 12 friction plates III,

13 friction plates IV, 14 rear-wheels, 15 common unidirectional mechanical bearings II, 16 rear power wheels,

17 output wheels, 18 fastening screws II；

101 return springs II, 102 return springs I, 103 advance and retreat guide rails, 104 ring-shaped guide rails III,

105 ring-shaped guide rails II, 106 ring-shaped guide rails I, 107 operate the rudder mechanism, 108 intermediate power wheels,

109 supporting sliders；

201 tension grips I, 202 positioning SMA springs I, 203 positioning SMA springs II, 204 operate the rudder bar,

205 positioning SMA springs III, 206 swing guide rails, 207 positioning SMA springs IV, 208 tension grips II,

209 workbench III, 210 leaf springs II, 211 workbench II, 212 leaf springs I,

213 workbench I, 214 fastening screws III；

301 tense SMA silk I, and 302 tense SMA silk II.

Specific embodiment

For the technical solution of the utility model and its specific work process is further described, in conjunction with Figure of description, this reality It is as follows with novel specific embodiment:

As shown in figures 1 and 3, the utility model provides a kind of two-way controllable overrunning clutch, is passed by Bidirectional power Pass mechanism and hydrodynamic regulation mechanism composition.

The Bidirectional power transmission mechanism include input shaft 1, wheel for inputting 9, breast wheel 10, friction plate I 6, friction plate II 7, Friction plate III 12, friction plate IV 13, front-wheel 5, rear-wheel 14, preceding power wheel 2, intermediate power wheel 108, rear power wheel 16, output wheel 17, common unidirectional mechanical bearing I 4 and common unidirectional mechanical bearing II 15 form.

The axle ends of the input shaft 1 and wheel for inputting 9 are coaxially connected by way of axial grafting, so that the two is along week It is fixed to limit, and there are gaps along axial direction, so that micro advance and retreat sliding is axially can be achieved in input shaft 1 and wheel for inputting 9；Input The wheel disc end of wheel 9 is fixedly and coaxially connected by fastening screw I 8 with breast wheel 10, realizes input shaft 1, wheel for inputting 9 and breast wheel 10 Synchronous rotary.

The front-wheel 5 and rear-wheel 14 are located at the front and rear sides of breast wheel 10, and (in the present embodiment, " preceding " refers to clutch Input terminal side, " rear " refers to the output end side of clutch), in front-wheel 5 and breast wheel 10 and breast wheel 10 and rear-wheel Friction material is equipped between 14, wherein friction plate I 6 is covered on the rear end face of front-wheel 5, and friction plate II 7 is covered on breast wheel On 10 front end face, friction plate III 12 is covered on the rear end face of breast wheel 10, and friction plate IV 13 is covered on the front end of rear-wheel 14 On face, between 10 front end face of rear end face and breast wheel of the front-wheel 5 and front end of the rear end face of breast wheel 10 and rear-wheel 14 Axial distance between face is merely greater than the sum of the thickness of the correspondence two panels friction plate between them, is installed as being interference fitted, and Magnitude of interference is grade.

The front and back end of the preceding power wheel 2 is equipped with flange, before preceding power wheel 2 is mounted on wheel for inputting 9 by roller bearing 3 On the wheel shaft at end, the inner ring of roller bearing 3 and the wheel shaft periphery of wheel for inputting 9 are cooperatively connected, and the outer ring of roller bearing 3 is moved with preceding The inner headed face of 2 front end flange of wheels is cooperatively connected；The front and back end of the rear-wheel 14 is also equipped with flange.

Before the common unidirectional mechanical bearing I 4 is mounted between power wheel 2 and front-wheel 5, common unidirectional mechanical bearing I 4 The front end flange periphery of inner ring and front-wheel 5 is cooperatively connected, and circumferentially fixed, common unidirectional mechanical bearing is realized by connector The inner headed face of I 4 outer ring and preceding power wheel 2 is cooperatively connected, and is realized by connector circumferentially fixed；The common unidirectional mechanical Bearing II 15 is mounted between rear power wheel 16 and rear-wheel 14, distal process after the inner ring and rear-wheel 14 of common unidirectional mechanical bearing II 15 The periphery of edge is cooperatively connected, and realizes by connector circumferentially fixed, the outer ring of common unidirectional mechanical bearing II 15 and moves afterwards The inner headed face of wheels 16 is cooperatively connected, and is realized by connector circumferentially fixed；The common unidirectional mechanical bearing I 4 with it is common The engagement of unidirectional mechanical bearing II 15 is contrary, and in the present embodiment, common unidirectional mechanical bearing I 4 is engagement clockwise, i.e., When the inner ring of common unidirectional mechanical bearing I 4 rotates clockwise under the drive of front-wheel 5, common unidirectional mechanical bearing I 4 it is interior Circle is meshed with outer ring, power wheel 2 before power is transferred to through common unidirectional mechanical bearing I 4, when common unidirectional mechanical bearing I 4 When inner ring rotates counterclockwise under the drive of front-wheel 5, the inner ring of common unidirectional mechanical bearing I 4 is separated with outer ring, common at this time single The opposite idle running of Internal and external cycle to mechanical bearing I 4, power are interrupted in common unidirectional mechanical bearing I 4；Common unidirectional mechanical bearing II 15 be engagement counterclockwise, i.e., the inner ring of common unidirectional mechanical bearing II 15 transmits power when rotating counterclockwise, when rotating clockwise Power interruption.

The preceding power wheel 2 is co-axially located at the front and rear sides of intermediate power wheel 108, preceding power wheel 2 with rear power wheel 16 It is evenly distributed with positioning chuck with the circumferencial direction of rear power wheel 16, matchedly, the front and back of the intermediate power wheel 108 The circumferencial direction of end face is uniformly provided with locating groove, and between preceding power wheel 2 and intermediate power wheel 108 and rear power wheel 16 is in Between coaxial fixation is realized by positioning chuck and locating groove structure snap fit respectively between power wheel 108；The output wheel 17 are coaxially fixed on the rear end face of rear power wheel 16 by fastening screw II 18, final to realize preceding power wheel 2, intermediate power wheel 108,17 synchronous rotary of rear power wheel 16 and output wheel.

As shown in Figure 2, Figure 3 and Figure 4, the hydrodynamic regulation mechanism 11 is by three groups of ring-shaped guide rails, four groups of workbench groups, four groups It operates the rudder mechanism, four groups of supporting slider mechanisms and four groups of advance and retreat resetting-mechanisms composition.

Three groups of ring-shaped guide rails are coaxially set side by side, three groups of ring-shaped guide rails from front to back respectively with front-wheel 5, breast wheel 10 It is corresponding in turn to rear-wheel 14, respectively ring-shaped guide rail I 106, ring-shaped guide rail II 105 and ring-shaped guide rail III 104, three groups of ring-types are led The structure of rail is identical, is provided with annular groove in the inside circumference of ring-shaped guide rail.

Four groups of supporting slider mechanisms are evenly distributed on the inside circumference of three groups of ring-shaped guide rails, every group of supporting slider mechanism It is made of the identical supporting slider 109 of three root knot structures, three supporting sliders 109 coaxial arrangement in every group of supporting slider mechanism, And it is corresponding with three groups of ring-shaped guide rails respectively, one end of three supporting sliders 109 pass through respectively screw thread pair be fixed on front-wheel 5, in Between wheel 10 and rear-wheel 14 periphery on, the other end of three supporting sliders 109 is embedded in ring-shaped guide rail I 106 respectively, ring-type is led In the annular groove of III 104 inside of rail II 105 and ring-shaped guide rail.

Four groups of advance and retreat resetting-mechanisms are evenly distributed in the circumferential end surfaces of three groups of ring-shaped guide rails, to three groups of ring-shaped guide rails Play the role of reset, the structure of every group of advance and retreat resetting-mechanism is all the same, the advance and retreat resetting-mechanism by advance and retreat guide rail 103, return Position spring I 102 and return spring II 101 form, and the advance and retreat guide rail 103 is arranged perpendicular to the end face of ring-shaped guide rail, and advance and retreat are led Rail 103 runs through ring-shaped guide rail II 105, and one end of advance and retreat guide rail 103 is fixed on ring-shaped guide rail I 106, advance and retreat guide rail 103 it is another One end is fixed on ring-shaped guide rail III 104, and return spring I 102 is sleeved between ring-shaped guide rail I 106 and ring-shaped guide rail II 105 On advance and retreat guide rail 103, and the both ends of return spring I are connected to the rear end face and ring-shaped guide rail II 105 of ring-shaped guide rail I 106 Front end face between, return spring II 101 is sleeved on the advance and retreat guide rail 103 between ring-shaped guide rail II 105 and ring-shaped guide rail III 104 On, and the both ends of return spring II 101 are connected to the rear end face of ring-shaped guide rail II 105 and the front end of ring-shaped guide rail III 104 On face, the return spring I 102 is identical with the structure of return spring II 101, when return spring I 102 and return spring II 101 without deformation, and when being in raw footage, ring-shaped guide rail II 105 is located at the axial direction of ring-shaped guide rail I 106 and ring-shaped guide rail III 104 Middle position.

Four groups of workbench groups are evenly distributed on the circumference side of three groups of ring-shaped guide rails, the structure of every group of workbench group All the same, every group of workbench group is made of the identical workbench of three structures, and the workbench is arc bridge-like structure, every group of work Make three workbench coaxial arrangement in platform group, periphery of three workbench respectively with three groups of ring-shaped guide rails matches, Wherein, on the mating periphery for being mounted on ring-shaped guide rail I of workbench I 213, workbench II 211 is mating to be mounted on ring-shaped guide rail II On 105, on the mating periphery for being mounted on ring-shaped guide rail III 104 of workbench III 209, workbench I 213, workbench II 211 and work The two sides bridge plate for making platform III 209 passes through one group of fastening screw III 214 respectively and is separately fixed at ring-shaped guide rail I 106, ring-shaped guide rail II 105 and ring-shaped guide rail III 104 both sides of the face on.

Four groups of mechanisms of operating the rudder are evenly distributed on the circumference side of three groups of ring-shaped guide rails, the structure of every group of workbench group It is all the same, and four groups of mechanisms of operating the rudder are corresponded with four groups of workbench group positions respectively.

As shown in Figure 4, Figure 5 and Figure 6, the mechanism 107 of operating the rudder is by 204, four positioning SMA springs of bar of operating the rudder, two drawings Tight pawl, 206, two leaf springs of swing guide rail and two tension SMA compositions；Wherein, four positioning SMA spring is respectively Positioning SMA spring I 202, positioning SMA spring II 203, positioning SMA spring III 205 and positioning SMA spring IV 207；Described two A tension grip is respectively tension grip I 201 and tension grip II 208；Described two tensions SMA are respectively to tense I 301 He of SMA silk Tense SMA silk II 302；Described two leaf springs are respectively leaf spring I 212 and leaf spring II 210.

As shown in fig. 7, the lower section of the bar 204 of operating the rudder is rotary axle box, it is equipped with one vertically in the top of rotary axle box Polished rod, the two sides of rotary axle box are symmetrically arranged with the front side wing and posterior area of fixigena obliquely.

As shown in figure 4, mechanism 107 of the operating the rudder installation corresponding with workbench group, the bar 204 of operating the rudder are arranged in workbench II 211 tops, positioning SMA spring I 202 and SMA spring II 203 of transposing are located at the front side for bar 204 of operating the rudder, SMA spring I of transposing 202 and one end of positioning SMA spring II 203 be fixedly connected on the polished rod top for operating the rudder bar 204, I 202 He of SMA spring of transposing The other end of positioning SMA spring II 203 is respectively fixedly connected in the two sides of workbench I 213；Positioning SMA spring III 205 and positioning SMA spring IV 207 is located at the rear side for bar 204 of operating the rudder, and positioning SMA spring III 205 and the one end for SMA spring IV 207 of transposing are solid Surely it is connected to the polished rod top for bar 204 of operating the rudder, positioning SMA spring III 205 and the other end for SMA spring IV 207 of transposing are solid respectively Surely the two sides of workbench III 209 are connected to.

As shown in figure 8, the centre of the swing guide rail 206 is the rotation connection plate being axially and symmetrically arranged, it is rotatablely connected plate Radially opposite sides be symmetrically arranged with the track of line style, be provided with line style groove along rail length direction among two siding tracks, such as Fig. 4 and Shown in Fig. 5, the rotation connection plate of the swing guide rail 206 and the rotary axle box for bar 204 of operating the rudder are turned by a concentric rotation axis Dynamic connection, the both ends of the rotary shaft are mounted on workbench II 211 by bracket, the axial direction and ring-shaped guide rail of the rotary shaft Axial direction it is perpendicular；The tension grip I 201 and tension grip II 208 are symmetrically arranged at the front and rear sides of swing guide rail 206, Tension grip I 201 is identical with the structure of tension grip II 208, is equipped with claw in one end of tension grip I 201 and tension grip II 208, The other end of tension grip I 201 and tension grip II 208 is equipped with the sliding slot to match with 206 liang of siding tracks of swing guide rail, the tension Pawl I 201 and tension grip II 208 match grafting with 206 two sides of swing guide rail respectively, and in tension grip I 201 and tension grip II 208 Detent ends be provided with line style groove along the length direction of tension grip I 201 and tension grip II 208；It is described to tense the one of SMA silk I 301 End is fixed on the line style bottom portion of groove of 206 front side track of swing guide rail, and the other end for tensing SMA silk I 301 is fixed on tension grip I 201 line style bottom portion of groove；Described one end for tensing SMA silk II 302 is fixed on the line style groove of 206 rear side track of swing guide rail Bottom, the other end for tensing SMA silk II 302 are fixed on the line style bottom portion of groove of tension grip II 208.Tensing I 301 He of SMA silk Under the flexible drive for tensing SMA silk II 302, tension grip I 201 and tension grip II 208 will respectively with 206 front and rear sides of swing guide rail It is produced relative sliding between track.

As shown in fig. 6, when the bar 204 of operating the rudder is in a vertical position, the front side wing and swing guide rail 206 of bar 204 of operating the rudder Angle between the track of front side on vertical direction is α, is erected between 206 rear side rail of posterior area of fixigena and swing guide rail for bar 204 of operating the rudder The upward angle of histogram is α；The leaf spring I 212 is installed in the lower surface of 206 front side track of swing guide rail and the work of corresponding side Make between II 211 upper surface of platform, leaf spring II 210 is installed in the lower surface of 206 rear side track of swing guide rail and the work of corresponding side Make between II 211 upper surface of platform；Angle between the leaf spring I 212 and the workbench II 211 of corresponding side is β, leaf spring II Angle between the workbench II 211 of 210 corresponding sides is β.

The positioning SMA spring I 202, positioning SMA spring II 203, positioning SMA spring III 205 and positioning SMA spring IV 207 is, using spring like component made of SMA material, have the performance of heat shrinkable, and have smaller shrinkage stress, big receipts The characteristics of contracting displacement stroke；In positioning SMA spring I 202, positioning SMA spring II 203, positioning SMA spring III 205 and positioning The outer wall of SMA spring IV 207 is equipped with heat-barrier material, so that reduce it is influenced by environment temperature；

The tension SMA silk I 301 and tension SMA silk II 302 are to be had heated using filament parts made of SMA material The performance of contraction, and have the characteristics that smaller contraction displacement stroke, big shrinkage stress；Tensing SMA silk I 301 and tension SMA II 302 outer wall is without heat-barrier material, and in the case where tensing SMA silk I 301 or tensing the drive of SMA silk II 302, breast wheel 10 is with before During the friction engagement of wheel 5 or breast wheel 10 and rear-wheel 14, frictional heat generation is contacted with corresponding friction plate end face, is given birth to friction Corresponding tension SMA silk I 301 or tension SMA silk II 302 shrink self-excitation at heat, reduce and tense SMA silk I 301 or tense The electricity consumption that the energization of SMA silk II 302 is shunk has the function of environmental protection, self-regulation.

According to the concrete composition structure of above-mentioned two-way controllable overrunning clutch, the two-way controllable overrunning clutch The course of work is specific as follows:

The course of work of two-way controllable overrunning clutch described in the utility model includes mono-directional overrun clockwise, counterclockwise Four kinds of mono-directional overrun, bidirectional overtaking and two-way conjunction operating modes.

1, mono-directional overrun clockwise:

The mono-directional overrun clockwise, i.e. wheel for inputting 9 (importation of clutch) can only to output wheel 17 (clutch Output par, c) power rotated clockwise is inputted, and output wheel 17 does not influence rotating clockwise for wheel for inputting 9.

When needing to carry out mono-directional overrun clockwise, at this point, being located at the positioning SMA spring I 202 for 107 front side of mechanism of operating the rudder It is first powered with positioning SMA spring II 203, the positioning SMA spring I 202 and positioning SMA spring II 203 after the heating that is powered will be along length Direction is spent to shrink, in the case where the contraction of positioning SMA spring I 202 and SMA spring II 203 of transposing pulls, bar 204 of operating the rudder is swung forward, After swing angle is more than α to bar 204 of operating the rudder forward, the front side wing for bar 204 of operating the rudder is resisted against the front side track of swing guide rail 206 Upper surface, positioning SMA spring I 202 and positioning SMA spring II 203 continue to shrink and drive the palm in lasting energization temperature-rise period The front side track continuation that rudder stock 204 presses swing guide rail 206 is swung forward, and then is compressed under 206 front side track of swing guide rail The leaf spring I 212 of side, when the front side track of swing guide rail 206 is swung forward and when close to horizontal direction, I 201 end of tension grip Claw is just stuck on the outside of the front end face of ring-shaped guide rail I 106, at this time to the tension SMA silk I for being located at I 201 side of tension grip 301 are powered, and the tension SMA silk I 301 after the heating that is powered will be shunk along its length, drive in the contraction for tensing SMA silk I 301 Under, tension grip I 201 will produce relative sliding between the front side track of swing guide rail 206, under the drive of tension grip I 201, Ring-shaped guide rail II 105 in an intermediate position is along axial advancement (i.e. to mobile close to the direction of ring-shaped guide rail I), since support is slided In linkage, ring-shaped guide rail II 105 and breast wheel 10 are axially fixed connection by centrally located supporting slider 109, therefore Under the drive of ring-shaped guide rail II 105, breast wheel 10 is moved axially forward, and breast wheel 10 passes through the friction plate I 6 on front side of squeezing It is meshed with friction plate II 7 with front-wheel 5；

Since common unidirectional mechanical bearing I 4 is engagement clockwise, when input shaft 1 rotates clockwise, power successively passes through Wheel for inputting 9, breast wheel 10, friction plate II 7, friction plate I 6, front-wheel 5, common I 4 inner ring of unidirectional mechanical bearing, common unidirectional mechanical I 4 outer ring of bearing, preceding power wheel 2, intermediate power wheel 108, rear power wheel 16 and output wheel 17, finally from output wheel 17 with up time The form output of needle rotation；

When input shaft 1 rotates counterclockwise, since common unidirectional mechanical bearing I 4 is detached from counterclockwise, outer ring idle running is not passed Graduating power, at this point, the power rotated counterclockwise is in common I 4 inner ring of unidirectional mechanical bearing and common I 4 outer ring of unidirectional mechanical bearing Between interrupt, so kind operating mode only transmit the power rotated clockwise；

When the revolving speed that rotates clockwise of output wheel 17 surmounts when rotating clockwise of input shaft 9, front-wheel 5 is relative to preceding at this time Power wheel 2 rotates counterclockwise, and is detached from since common unidirectional mechanical bearing I 4 engages clockwise and counterclockwise, the output to exceed the speed limit at this time Wheel 17 does not influence the rotation of input shaft 9, this power for rotating clockwise output, which can surmount, to be disengaged from, therefore the clutch is realized Mono-directional overrun function clockwise.

2, mono-directional overrun counterclockwise:

The mono-directional overrun counterclockwise, i.e. wheel for inputting 9 (output par, c of clutch) can only to output wheel 17 (clutch Output par, c) power rotated counterclockwise is inputted, and output wheel 17 does not influence rotating counterclockwise for wheel for inputting 9.

When needing to carry out mono-directional overrun counterclockwise, at this point, being located at the positioning SMA spring III 205 for 107 rear side of mechanism of operating the rudder It is first powered with positioning SMA spring IV 207, the positioning SMA spring III 205 and positioning SMA spring IV 207 after the heating that is powered will be along length It spends direction to shrink, in the case where the contraction of positioning SMA spring III 205 and SMA spring IV 207 of transposing pulls, bar 204 of operating the rudder is put backward Dynamic, after bar 204 of operating the rudder, which swings backward angle, is more than α, the posterior area of fixigena for bar 204 of operating the rudder is resisted against the rear side rail of swing guide rail 206 The upper surface in road, positioning SMA spring III 205 and positioning SMA spring IV 207 continue to shrink in lasting energization temperature-rise period simultaneously band The rear side track that dynamic bar 204 of operating the rudder presses swing guide rail 206 continues to swing backward, and then compresses 206 rear side rail of swing guide rail Leaf spring II 210 below road, when the rear side track of swing guide rail 206 is swung backward and when close to horizontal direction, tension grip II 208 The claw of end is just stuck on the outside of the back end surface of ring-shaped guide rail III 104, at this time to the tension for being located at II 208 side of tension grip SMA silk II 302 is powered, and the tension SMA silk II 302 after the heating that is powered will be shunk along its length, is tensing SMA silk II 302 It shrinks under driving, tension grip II 208 will produce relative sliding between the rear side track of swing guide rail 206, in tension grip II 208 Drive under, ring-shaped guide rail II 105 in an intermediate position, which is moved back along axial direction, (to be moved to the direction close to ring-shaped guide rail III 104 It is dynamic), since in supporting slider mechanism, centrally located supporting slider 109 is by ring-shaped guide rail II 105 and breast wheel 10 along axis To being fixedly connected, therefore under the drive of ring-shaped guide rail II 105, breast wheel 10 is moved axially rearward, and breast wheel 10 passes through extruding Friction plate III 12, the friction plate IV 13 of rear side are meshed with rear-wheel 14；

Since common unidirectional mechanical bearing II 15 is engagement counterclockwise, when input shaft 1 rotates counterclockwise, power is successively passed through Cross wheel for inputting 9, breast wheel 10, friction plate III 12, friction plate IV 13, rear-wheel 14, common II 15 inner ring of unidirectional mechanical bearing, common II 15 outer ring of unidirectional mechanical bearing, rear power wheel 16 and output wheel 17, it is finally defeated in the form rotated counterclockwise from output wheel 17 Out；

When input shaft 1 rotates clockwise, since common unidirectional mechanical bearing II 15 is detached from clockwise, outer ring is dallied not Power is transmitted, at this point, the power rotated clockwise is in common II 15 inner ring of unidirectional mechanical bearing and common unidirectional mechanical bearing I 4 It is interrupted between outer ring, so kind operating mode only transmits the power rotated counterclockwise；

When the revolving speed that rotates counterclockwise of output wheel 17 surmounts when rotating counterclockwise of input shaft 9, at this time rear-wheel 14 relative to Rear power wheel 16 rotates clockwise, and is detached from since common unidirectional mechanical bearing II 15 engages counterclockwise and counterclockwise, exceeds the speed limit at this time Output wheel 17 do not influence the rotation of input shaft 9, this power for rotating counterclockwise output, which can surmount, to be disengaged from, therefore the clutch Device realizes mono-directional overrun function counterclockwise.

3, bidirectional overtaking:

The bidirectional overtaking, wheel for inputting 9 (output par, c of clutch) and output wheel 17 (output par, c of clutch) nothing It is connected by power；

When needing to carry out bidirectional overtaking, at this point, being located at positioning SMA spring I 202 and the positioning for 107 front side of mechanism of operating the rudder SMA spring II 203 and positioning SMA spring III 205 positioned at the rear side of mechanism 107 of operating the rudder and positioning SMA spring IV 207 are obstructed Electricity, and the tension SMA silk I 301 positioned at I 201 side of tension grip and the tension SMA silk II 302 positioned at II 208 side of tension grip are also Equal no power, breast wheel 10 is in an intermediate position at this time, does not both engage with front-wheel 5, does not also engage with rear-wheel 14, therefore, Wheel for inputting 9 rotates clockwise or counterclockwise the rotation for not affecting output wheel 17, unpowered company between wheel for inputting 9 and output wheel 17 It connects, that is, realizes the clutch bidirectional overtaking function.

4, two-way conjunction:

The two-way conjunction, i.e. wheel for inputting 9 (importation of clutch) can be to (the output sections of clutch of output wheel 17 Point) power rotated clockwise is inputted, and output wheel 17 does not influence rotating clockwise for wheel for inputting 9, and 9 (clutch of wheel for inputting Output par, c) also the power that rotate counterclockwise can be inputted to output wheel 17 (output par, c of clutch), and output wheel 17 is not Influence rotating counterclockwise for wheel for inputting 9；

When the input of wheel for inputting 9 rotates clockwise power, positioning SMA spring I 202 and positioning SMA spring II 203 first lead to Electricity, tense SMA silk I 301 after be powered, power from output wheel 17 clockwise output, the specific work process of clutch with it is " suitable above Hour hands mono-directional overrun " the course of work is identical；When wheel for inputting 9 inputs rotary power counterclockwise, transpose SMA spring III 205 and tune Position SMA spring IV 207 is first powered, and is powered after tensing SMA silk II 302, the specific work process of clutch and " list counterclockwise above To surmounting " course of work is identical；Clutch under such operating mode, which can not only transmit, rotates clockwise power, but also can transmit Rotary power counterclockwise realizes two-way conjunction function.

Design has four groups of mechanisms 107 of operating the rudder altogether in two-way controllable overrunning clutch described in the utility model, and four groups are operated the rudder Mechanism 107 is uniformly distributed along the circumferencial direction of ring-shaped guide rail, when the when the clutch is in operation, the mechanism 107 of operating the rudder of two adjacent groups Do not enter working condition simultaneously, i.e., is engaged two groups of mechanisms of operating the rudder for being only oppositely arranged (i.e. interval setting) when work every time 107 work at the same time, other two groups two groups of mechanisms of operating the rudder for being oppositely arranged and (being spaced setting) when carrying out joggleword next time 107 work at the same time again, and the design of this operating mode allows for energization (cardinal principle is also switched on heat production) or is heated and acts SMA material afterwards, under natural cooling effect, temperature will not immediately restore initial equilibrium state, certain delay be needed, so two groups Mechanism of operating the rudder 107 has worked, and into working condition, two groups just to have worked are operated the rudder the utilization of mechanism 107 for another two groups mechanisms 107 of operating the rudder The time of another two groups of groups work restores to cool down to initial equilibrium state.

As shown in figure 9, the structure of two-way controllable overrunning clutch described in the utility model is compact to design, integrated level compared with Height is conducive to the light-weight design of product.

Claims (6)

1. a kind of two-way controllable overrunning clutch, it is characterised in that:

It is made of Bidirectional power transmission mechanism and hydrodynamic regulation mechanism；

In the Bidirectional power transmission mechanism, input shaft (1), wheel for inputting (9) are sequentially coaxially fixedly connected with breast wheel (10), preceding Wheel (5) and rear-wheel (14) are coaxially mounted to breast wheel (10) front and rear sides, and front-wheel (5) and rear-wheel (14) and breast wheel (10) it Between be respectively equipped with friction plate, preceding power wheel (2) is coaxially connected by common unidirectional mechanical bearing I (4) and front-wheel (5), rear power Take turns (16) it is coaxially connected by common unidirectional mechanical bearing II (15) and rear-wheel (14), common unidirectional mechanical bearing I (4) with commonly The engagement of unidirectional mechanical bearing II (15) is contrary, and intermediate power wheel (108) is coaxially connected in preceding power wheel (2) and rear power It takes turns between (16), output wheel (17) is coaxial connected with rear power wheel (16)；

In the hydrodynamic regulation mechanism, the inner headed face of three groups of ring-shaped guide rails respectively with front-wheel (5), breast wheel (10) and rear-wheel (14) Periphery axial restraint, four groups of mechanisms of operating the rudder (107) are uniformly distributed by workbench respectively and are mounted on three groups of ring-shaped guide rails Periphery on, between the end face of three groups of ring-shaped guide rails be equipped with advance and retreat resetting-mechanism so that ring of the more intermediate annular guide rail in two sides Slide axially reset between shape guide rail；

In the mechanism of operating the rudder (107), bar of operating the rudder (204) is located on the corresponding workbench of breast wheel (10), and and swing guide rail (206) connection is rotated coaxially, it is solid at the top of the positioning SMA spring one end and bar (204) of operating the rudder of side setting before and after bar of operating the rudder (204) Even, the other end is connected with the workbench on corresponding side ring-shaped guide rail, and bar of operating the rudder (204) front and rear sides are equipped with side obliquely The wing, swing guide rail (206) front and back side match connection with tension grip respectively, side and corresponding tension before and after swing guide rail (206) Tension SMA has been respectively fixedly connected between pawl, it is relatively sliding between swing guide rail (206) and tension grip in the case where tensing SMA drives It is dynamic, leaf spring is respectively equipped between side lower surface and corresponding workbench before and after swing guide rail (206)；

The positioning SMA spring and tension SMA are all made of SMA material, have heat shrinkable, the cooling characteristic restored；

The axial displacement control between three groups of ring-shaped guide rails is controlled by the mechanism of operating the rudder (107) in the hydrodynamic regulation mechanism Breast wheel (10) processed combines or separates between front-wheel (5) or rear-wheel (14).

2. a kind of two-way controllable overrunning clutch as described in claim 1, it is characterised in that:

The inner headed face of three groups of ring-shaped guide rails by several groups circumferentially equally distributed supporting slider mechanism respectively with front-wheel (5), The periphery axial restraint of breast wheel (10) and rear-wheel (14)；

The supporting slider mechanism is made of the supporting slider (109) of three root knot structures, one end difference of three supporting sliders (109) Be fixed on by screw thread pair on the periphery of front-wheel (5), breast wheel (10) and rear-wheel (14), three supporting sliders (109) it is another One end is embedded in respectively in the annular groove on the inside of three groups of ring-shaped guide rails.

3. a kind of two-way controllable overrunning clutch as described in claim 1, it is characterised in that:

Advance and retreat resetting-mechanism described in several groups is along the circumferential direction distributed on the end face of three groups of ring-shaped guide rails；

The advance and retreat resetting-mechanism is made of advance and retreat guide rail (103), return spring I (102) and return spring II (101), described Advance and retreat guide rail (103) is arranged perpendicular to the end face of three groups of ring-shaped guide rails, and advance and retreat guide rail (103) runs through intermediate ring-shaped guide rail, into The one end for moving back guide rail (103) is fixed on the ring-shaped guide rail of front side, and the other end is fixed on the ring-shaped guide rail of rear side, return spring I (102) are sleeved on the advance and retreat guide rail (103) between front side ring-shaped guide rail and more intermediate annular guide rail, return spring II (101) set On advance and retreat guide rail (103) between more intermediate annular guide rail and rear side ring-shaped guide rail, the return spring I (102) and return The structure of spring II (101) is identical.

4. a kind of two-way controllable overrunning clutch as described in claim 1, it is characterised in that:

The outside of the positioning SMA spring is equipped with heat-barrier material.

5. a kind of two-way controllable overrunning clutch as described in claim 1, it is characterised in that:

The lower section of the bar of operating the rudder (204) is rotary axle box, is equipped with a polished rod, rotary axle box vertically in the top of rotary axle box Two sides be symmetrically arranged with the front side wing and posterior area of fixigena obliquely；

The centre of the swing guide rail (206) is the rotation connection plate being axially and symmetrically arranged, and is rotatablely connected the radially opposite sides pair of plate Claim the track for being equipped with line style, is provided with line style groove, the rotation of swing guide rail (206) along rail length direction among two siding tracks The rotary axle box of connecting plate and bar (204) of operating the rudder is rotatablely connected by a concentric rotation axis, and the both ends of the rotary shaft pass through Bracket is installed on the workbench, and the axial direction of the rotary shaft and the axial direction of ring-shaped guide rail are perpendicular；

One end of the tension grip is equipped with claw, and the other end is equipped with the sliding slot to match with (206) two siding track of swing guide rail, Two tension grips match grafting with swing guide rail (206) two sides respectively, are provided with line style along its length in the detent ends of tension grip Groove；

The line style bottom portion of groove for tensing SMA one end and being fixed on swing guide rail (206) corresponding siding track, the other end are fixed on The line style bottom portion of groove of respective side tension grip.

6. a kind of two-way controllable overrunning clutch as described in claim 1, it is characterised in that:

The workbench is arc bridge-like structure, and three groups of ring-shaped guide rails respectively correspond three workbench of installation, workbench and ring-type The periphery of guide rail matches, and workbench two sides bridge plate passes through fastening screw respectively and is fixed on the both sides of the face of ring-shaped guide rail.