CN100594309C - Zero-impact spring steel ball safety clutch - Google Patents
Zero-impact spring steel ball safety clutch Download PDFInfo
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- CN100594309C CN100594309C CN200710152154A CN200710152154A CN100594309C CN 100594309 C CN100594309 C CN 100594309C CN 200710152154 A CN200710152154 A CN 200710152154A CN 200710152154 A CN200710152154 A CN 200710152154A CN 100594309 C CN100594309 C CN 100594309C
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Abstract
The present invention discloses a no-collision spring steel ball safety clutch, which has the characteristics of no overload impact or no collision, high rotating speed, simplicity and reliability, easy manufacture, and long service life. The present invention is characterized in that the no-collision spring steel ball safety clutch is provided with a blocking embedding mechanism preventing a steel ball embedding mechanism from being embedded under the overload condition, the mechanism on the axial direction is positioned in the steel ball embedding mechanism, and the mechanism on the radial direction is positioned in the steel ball embedding mechanism or outside the steel ball embedding mechanism; a lift angle of both sides blocking the working surface is formed to enough ensure the friction self-locking collided on the both sides and the stability of the blocking operating condition, in order that the lift angle has the capabilities that the adaptive axle base is changed and the abrasion is automatically compensated; no collision characteristic of the overrunning operating condition of the two embedding mechanisms, and the separating block of the blocking embedding mechanism andthe absolute reliability of the embedding return process are maintained for a long time. After the overload separation, the positive rotation or negative rotation which is simple and convenient can evenly realize the embedment replacement of the clutch automatically.
Description
Technical field
The present invention relates to the engaging and disengaging gear in a kind of mechanical transmission fields, particularly a kind of spring steel ball safety engaging and disengaging gear with the effect of the torque-limiting upper limit.
Background technique
In the prior art, the independent steel ball that axle spring steel ball safety clutch can rotate flexibly with self has replaced the embedding tooth that is fixed as one, thereby has improved the sensitivity and the working speed of inserted type safety clutch.Yet, owing to still have collision phenomenon repeatedly after the overload, drive line is formed harmful the impact, the steel ball groove is caused harmful wearing and tearing, therefore, influenced the sensitivity and the life-span of clutch, its working speed also is subjected to bigger restriction.1, on the operation torque of 000Nm magnitude, its high workload rotating speed generally is no more than 400 rev/mins.Simultaneously, therefore its maximum functional torque also is restricted.
Summary of the invention
Purpose of the present invention, just provide the Zero-impact spring steel ball safety clutch that does not have impingement phenomenon after a kind of overload, make it possess no overload impact, the collision-free wearing and tearing, long lifetime, quick and easy and automatic advantage is recovered in overload back, to improve its high workload rotating speed and torque, expansion application area.
Elder generation is as follows to relevant noun or conceptual illustration before recording and narrating technological scheme:
Owner's ring: by the revolving member that attached catch ring or attached limited ring depended on.
Reference rings: under the chimeric working state, as the revolving member of the static relatively reference object of catch ring; It is axially gone up the end face of directly facing catch ring and is called as datum end face, and the footpath upwards directly is called as the basic circle cylinder in the face of the cylndrical surface of catch ring.
Fixed engagement element: with the pushing ring steel ball is formed axial pincer attack formula compressing, form reeded joint element on the end face.Relative its installation shaft, this element is an axial restraint.
External joint element: with the torque output of clutch or input link is circumferentially fixing and with the joint element of this member transmitting torque.This element can be fixed engagement element or steel ball hub.
Stop working surface: after stopping chimeric mechanism axial separation, form the Topland part that is used between ring gear both sides' the radial teeth of this mechanism carrying out to top contact, its lift angle is represented with λ.
Stop operating mode: composition both sides' the blocking teeth that stops chimeric mechanism stops other the chimeric working condition of axial chimeric mechanism that is located axially at outside it mutually to top contact.
δ angle and ρ angle: stop in the operating mode, catch ring is contacted by the datum end face of its slip end face or cylndrical surface and reference rings or basic circle cylinder on the one hand and forms sliding friction pair, stopping stopping that working surface axially contacts and forming the static friction pair of working surface and attached blocking teeth by its blocking teeth on the other hand, when only depending on this static friction pair to limit the circumferential position of the attached relatively catch ring of catch ring, this static friction pair must be self-locking, wherein, the minimum lift angle that stops working surface that can guarantee the secondary self-locking of this static friction just is defined as δ, and maximum lift angle just is defined as ρ.
Spacing working surface: the circumferential relative position of catch ring is given and the surface of limiting.To controlling chimeric mechanism, when λ＜δ, because of between both sides' blocking teeth can not self-locking to top contact, so having only the side of blocking teeth and the side of blocking teeth tooth top middle part spacing preiection is spacing working surface; When δ≤λ≤ρ, because of between both sides' blocking teeth can reliable self-locking to top contact, so, all sides of blocking teeth and stop that working surface all is spacing working surface.
Steel ball equivalent Topland: in the clutch, the friction pair that forms between the steel ball groove surfaces on steel ball and the fixed engagement element end face, the friction factor of this friction pair must corresponding fixing friction angle, if two times of angles with this friction angle are cone angle, with the steel ball centre of sphere is conical tip, and then parallel axes promptly is defined as steel ball equivalent Topland in the steel ball surface that this conical surface comprised of clutch rotational axis.When only the axial occurrence positions to top contact between fixed engagement element and described steel ball dropped in this equivalent Topland, the friction pair of the two can guarantee to be in self-locking state.
The chimeric degree of depth of full-depth tooth: in the overload rotation process, the amplitude of variation of the axial distance between fixed engagement element in the chimeric mechanism of steel ball and the pushing ring.
Minimum barrier height: stop that operating mode (that is, stable chimeric status) carries out the transition to and stop operating mode by non-, stop chimeric mechanism the minimum axial direction distance that must separate.
The maximum spacing chimeric degree of depth: guarantee that the circumferential effect of contraction of spacing chimeric mechanism is existed, and stops the ultimate range that chimeric mechanism shaft upwards can be separated.Follow when stopping that chimeric mechanism moves together on the composition both sides of spacing chimeric mechanism are axial, this degree of depth is under the complete chimeric status, the axial distance between the peak in the coboundary of chimeric both sides' spacing working surface; Do not follow on the composition both sides of spacing chimeric mechanism are axial when stopping that chimeric mechanism moves together, this degree of depth is infinitely great.
The inlet nargin K that stops chimeric mechanism: when the influence of not considering other chimeric mechanism and catch ring are circumferentially free, on minimum barrier height, form and stop that the ring gear both sides of chimeric mechanism are not influencing the largest circumference angle that this mechanism shaft can stagger each other continuously under chimeric prerequisite.
Among the present invention, when the composition both sides of a chimeric mechanism are the axially support foundation with the composition both sides of a pair of member respectively, just claim that this chimeric mechanism is located axially between this a pair of member.In addition, alleged " catch ring " of the present invention is the abbreviation of independent catch ring.
For reaching above-mentioned purpose, Zero-impact spring steel ball safety clutch of the present invention, comprise fixed engagement element, steel ball, the steel ball hub, the pushing ring, spring and adjusting nut, and all arrange based on same revolution shaft axis, the steel ball hub is located axially between fixed engagement element and the pushing ring, spring is between pushing ring and adjusting nut, steel ball places the axial bore or the groove of steel ball hub, in the groove under the compressing of pushing ring on the part of the steel ball embedding fixed engagement element corresponding end-faces, steel ball hub and pushing ring can form as one, wherein, fixed engagement element and steel ball hub transmit input torque and output torque respectively, adjusting nut is connected on the rotor of circumferentially fixing with fixed engagement element or steel ball hub, under the effect of described spring, fixed engagement element, steel ball, steel ball hub and pushing ring are formed the chimeric mechanism of steel ball, it is characterized in that: be furnished with and stop under the overload separation state the chimeric mechanism shaft of described steel ball to the chimeric chimeric mechanism that stops, by catch ring and axial chimeric the forming of attached catch ring, all be formed with the blocking teeth that possesses axial barrier functionality on these two rings; Described attached catch ring and its owner's annular become one; The described minimum barrier height that stops chimeric mechanism is less than the chimeric degree of depth of the full-depth tooth of the chimeric mechanism of steel ball; Be furnished with spacing chimeric mechanism, form by catch ring and attached limited ring to stopping that the circumferential relative position of catch ring is implemented restriction in the chimeric mechanism; Attached limited ring and its owner's annular become one, and attached limited ring and attached catch ring are circumferentially fixing; The axial separation distance that stops chimeric mechanism is during greater than minimum barrier height, and the circumferential degrees of freedom of described spacing chimeric mechanism is greater than the inlet nargin that stops chimeric mechanism.
Above-mentionedly stop chimeric mechanism, be located axially between external joint element and the pushing ring, be positioned at radially within the chimeric mechanism of steel ball or outside, described catch ring is subjected to the unidirectional support of reference rings datum end face, its slip end face and this datum end face constitute and circumferentially are free to slide friction pair; Described external joint element is fixed engagement element or steel ball hub, and owner's ring of described attached catch ring is pushing ring or external joint element, and described reference rings is to encircle relative external joint element or pushing ring with the owner of attached catch ring.
When having the bidirectional obstruction function, arrange that all two stop working surface on each blocking teeth Topland of the composition both sides of the chimeric mechanism of blocking teeth, be formed at the both sides of Topland respectively accordingly, and (when the steel ball in clutch circumferentially evenly distributes) stops that the inlet nargin K of chimeric mechanism meets inequality K＞θ
c+ θ
f+ η.Relevant parameter is defined as follows:
θ
c: in safety clutch revolution circumference, the pairing circumference angle of intersection point on steel ball centre of sphere place turning circle cylinder and the fixed engagement element fitting end face between the two adjacent steel ball groove upper edges;
θ
f: in safety clutch revolution circumference, the pairing circumference angle of intersection point between steel ball centre of sphere place turning circle cylinder and the steel ball equivalent Topland border;
η: because the reduction value that lead angle etc. bring.
When described fixed engagement element be reference rings be again external joint element, the pushing ring is circumferentially fixed as owner's ring of attached catch ring and with the steel ball hub, described attached limited ring is attached on the described rotor of circumferentially fixing with the steel ball hub, and during directly in the face of the inner cylindrical surface of catch ring or end face, as long as one of formation radially or axial chimeric mechanism between attached limited ring and catch ring respective surfaces, just can obtain the radially spacing scheme of catch ring.
And stop with spacing optimal case and be, the working surface that stops of blocking teeth and attached the two tooth top of blocking teeth is the helicoid that lift angle is not more than ρ, and the middle part of a Topland is formed with spacing preiection at least therein, objectively plays to make blocking teeth serve as the effect that limiting tooth, attached blocking teeth serve as attached limiting tooth.Simultaneously, make that attached limited ring and attached catch ring are same ring, make spacing chimeric mechanism overlap into a chimeric mechanism of control, thereby final the realization stop that chimeric mechanism can stepless variation and adaptive purpose from spacing and axial barrier height with stopping chimeric mechanism.Simultaneously, must guarantee the maximum spacing chimeric degree of depth of spacing chimeric mechanism, greater than the chimeric degree of depth of the full-depth tooth of the chimeric mechanism of steel ball.
For asking better, also the helicoid that lift angle is β can be made in the side with stopping the working surface homonymy of the spacing preiection in the chimeric mechanism of control, | δ |≤β＜180 °.And stop that for making chimeric mechanism works perfectly and reliable, preferably catch ring is imposed constraint, to force on its datum end face or basic circle cylinder that in chimeric status, is still in reference rings relatively.
For optimal design provides more more options, the blocking teeth on the catch ring can be formed on the two ends or inside and outside cylndrical surface of catch ring ring-type matrix.
In addition, at | δ | during≤β＜90 °-φ, if a chimeric class position-limit mechanism on the specific circumferential position that catch ring can be forced to be limited in the relative datum ring is being set between reference rings and the catch ring, it is the catch ring rotation preventive mechanism, when this mechanism is chimeric, catch ring loses axial blocking capability, so, just can realize easily that the pressure of clutch is chimeric and resets.Wherein, φ is a friction angle of forming both sides' formed friction pair of rubbing contact on the side of spacing preiection of the chimeric mechanism of control.And the catch ring rotation preventive mechanism, can by on reference rings datum end face or the basic circle cylinder axially or the chimeric mechanism of cotter way formula that forms of the corresponding recesses on the radial direction through hole, the corresponding rubbing surface of catch ring or trip ring breach and spline pin.
At last, for guaranteeing reliably working two-way and that can force chimeric safety clutch, can pushing ring and steel ball hub is circumferentially fixing, such as passing through the chimeric mechanism of axial pin cellular type.
In the present invention, by in the chimeric mechanism of steel ball, having added chimeric mechanism of stopping of axial barrier effect, and the catch ring rotation preventive mechanism, realized the proposed invention purpose well.Promptly, when attached limited ring and attached catch ring form as one, but utilization stops the working surface that stops of the spacing preiection at tooth top middle part or self-locking, at attached limited ring and attached catch ring only circumferentially fixedly the time, utilize the spacing working surface that forms separately on the catch ring, just utilize chimeric mechanism of control and independent radial mode or the spacing chimeric mechanism of axialmode cotter way formula respectively, or fully utilized, all be maintained well and stopped and stop chimeric in-house circumferential relative position under the operating mode, reach the relation of stopping that is maintained well, stoped the chimeric purpose that resets and eliminate separation impact or collision of the chimeric mechanism of steel ball that surmounts in the state; And remove the mode of its blocking capability by force by means of backward rotation or by the catch ring rotation preventive mechanism, it is chimeric to have reached the overload quick and easy and automatic recovery in back well, and long-life target.Its high workload rotating speed and torque, and application area all obtains expanding.And, only increasing a simple catch ring, the structure of clutch and manufacture cost can obviously not change.
Description of drawings
Fig. 1 is the axial section of the embodiment of the invention one.
Fig. 2 is the schematic representation of steel ball hub among Fig. 1, (a) is plan view, (b) is the axial section of left view.
Fig. 3 is the schematic representation of pushing ring among Fig. 1, (a) be right elevation axially partly cut open figure, (b) be plan view.
Fig. 4 is the schematic representation of catch ring among Fig. 1, (a) is plan view, (b) is the axial section of left view, (c) is the expansion schematic representation of T direction local radial projection among (a) that amplifies.
Fig. 5 is that relativeness between the flank profil of two chimeric mechanisms among Fig. 1 is under different operating modes, schematic representation is launched in the part of the radially projecting on same external cylindrical surface, (a) be that the profile of tooth of the chimeric mechanism of steel ball under the chimeric status concerns schematic representation, (b) be that the profile of tooth of the control chimeric mechanism corresponding with (a) concerns schematic representation, (c) be that the profile of tooth that stops the chimeric mechanism of steel ball under the operating mode concerns schematic representation, (d) be that the profile of tooth of the control chimeric mechanism corresponding with (c) concerns schematic representation, (e) be the local enlarged diagram of (a), (f) be that the profile of tooth of the unidirectional control chimeric mechanism corresponding with (c) concerns schematic representation, the arrow representative is the overload sense of rotation relatively.
Fig. 6 represents, has stopping of various profiles of tooth chimeric mechanism with radially projecting's unfolded drawing form and all possible in stopping operating mode top contact concerned schematic representation, left side wheel profile among all figure all belongs to catch ring, and all right-hand wheel profiles all belong to attached catch ring; (a)～(i) expression is the various situations of the chimeric mechanism of control, wherein (a)～(c) expression is three kinds of special tooth profiles, (d)～(i) expression is | δ | and the whole profiles of tooth during＜λ≤ρ (e)～(i) then are the special tooth profiles of β=λ and coplane wherein; (j) expression is the profile of tooth that is applicable to the spacing chimeric mechanism of radial mode.
Fig. 7 is the axial section of the embodiment of the invention two.
Fig. 8 is the schematic representation of pushing ring among Fig. 7, (a) is the axial section of the right elevation of (b), (b) is plan view.
Fig. 9 is the schematic representation of catch ring among Fig. 7, (a) is plan view, (b) is the axial section of left view.
Figure 10 be the embodiment of the invention three axially partly cut open figure.
Figure 11 be the embodiment of the invention four axially partly cut open figure.
Figure 12 be the embodiment of the invention five axially partly cut open figure.
Figure 13 is the axial section of the embodiment of the invention six.
Figure 14 be the embodiment of the invention seven axially partly cut open figure.
Figure 15 be the embodiment of the invention eight axially partly cut open figure.
Figure 16 is the schematic representation of steel ball hub among Figure 15, (a) is plan view, (b) be left view axially partly cut open figure, (c) be the part rotation enlarged diagram of the unfolded drawing of T-T cylindrical section in (a).
Figure 17 is the axial section of the embodiment of the invention nine of radially spacing pattern.
Figure 18 be the embodiment of the invention ten axially partly cut open figure.
Embodiment
Necessary explanation: in the text of this specification and the institute's drawings attached, same or analogous member and characteristic portion thereof all adopt identical label symbol, and only when they occur for the first time, describe in detail, will no longer give elaborating of repetition when occurring once more thereafter.
Fig. 1～Fig. 5 shows first embodiment of the present invention, has the structural type of most typical spring steel ball safety clutch.As shown in Figure 1, fixed engagement element 50 is sleeved on the external cylindrical surface of second axle sleeve, 206 no threaded end by an end of steel ball hub 80, and by snap ring 210 axial restraints.Second axle sleeve 206 is made the rigidity one with steel ball hub 80, as shown in Figure 2.Catch ring 100 places in the circular depression of fixed engagement element 50 chimeric ends.Restricted spring 120 is installed between catch ring 100 and the steel ball hub 80, forces catch ring 100 to be adjacent to the end wall of circular depression, and promptly datum end face 54, makes the latter be still on this datum end face 54.Steel ball 60 is placed on the steel ball hub 80 in the circumferentially uniform through hole 82, its part spheroid embeds steel ball groove on fixed engagement element 50 corresponding end-faces on a direction when, still has the part spheroid to encircle on 90 the end face in withstanding on pushing on another direction.Pushing ring 90 the other ends by steel ball hub 80 are enclosed within on the external cylindrical surface of second axle sleeve, 206 threaded end.Attached attached blocking teeth 142 thereon passes dodges through hole 84 on the steel ball hub 80, forms with catch ring 100 and stops chimeric mechanism.Spring 160 is installed between pushing ring 90 and the adjusting nut 164.Adjusting nut 164 is bound up on the outside thread of second axle sleeve 206 with thread forms.Taper bush 208 is used for fixing and connects second axle sleeve 206 and second rotating shaft, by bolt 214 and tapped hole 216 to its axial force distribution.Circumferentially be evenly equipped with three spline pins 182 on the spline pin interlock ring 180, embed respectively in three spline pin mounting holes 188 on it by fixed engagement element 50 outer ends, the pin end face of spline pin 182 near but do not touch catch ring 100, by Returnning spring 186 assurances that are placed between spline pin interlock ring 180 and the fixed engagement element 50.
In the present embodiment, the chimeric mechanism of bidirectional obstruction is positioned within the chimeric mechanism of steel ball on radially.Fixed engagement element 50 be external joint element be again reference rings, pushing ring 90 serves as owners' ring of attached catch ring with its integral body as the form of the ring-type matrix of attached blocking teeth 142, as shown in Figure 3.Three attached blocking teeths 142 are distributed on the same end face at endoporus place of pushing ring 90, the helicoid type that it is λ that each tooth top all is formed with two lift angles symmetrically stop working surface 148, | δ |＜λ≤ρ.
As shown in Figure 4, blocking teeth 102 one of catch ring 100 are distributed on the outer rim side of ring-type matrix 112, and its tooth top middle part is formed with spacing preiection 114.The helicoid type that all to be formed with two lift angles symmetrically on each blocking teeth 102 be λ stop the spacing preiection helical flank 118 that 108, two lift angles of working surface are β, | δ |≤β＜180 °, and a spacing preiection end face 116.Having an end that stops working surface 108 is the fitting end face of catch ring, and the other end is the circumferential slip end face 124 of catch ring.This end also is evenly equipped with three spline grooves 126, just three of catch ring 100 blocking teeth teeth groove.
Shown in Fig. 5 (a), Fig. 5 (b) and Fig. 5 (e), fixed engagement element 50, steel ball 60, steel ball hub 80 and pushing ring 90 4 are axially gone up and are formed the chimeric mechanism of steel ball, wherein, and fixed engagement element 50 and steel ball hub 80 equal axial restraints.It is to stop that chimeric mechanism is again the chimeric mechanism of two-way control of spacing chimeric mechanism that catch ring 100 is formed with attached catch ring.The inlet nargin K that controls chimeric mechanism is
(related symbol is represented the angle of circumference between corresponding points), here, K＞θ
c+ θ
f+ η; Axial separation distance greater than AG after, the circumferential degrees of freedom of the spacing chimeric mechanism that stops working surface by both party and limited is natively greater than K.Under the chimeric status, AG＜D
c＜BE, wherein, D
cRepresent the chimeric degree of depth of full-depth tooth of the chimeric mechanism of steel ball, the AG representative stops the minimum barrier height (horizontal line symbolic representation axial distance, down together) of chimeric mechanism, and BE represents the maximum spacing chimeric degree of depth of spacing chimeric mechanism.Fig. 5 (c), (d) have provided the profile of tooth relation of each chimeric mechanism under the overload operating mode, and Fig. 5 (f) has provided the profile of tooth graph of a relation corresponding to the chimeric mechanism of unidirectional control of Fig. 5 (c).
Be understood that, circumferentially uniform three of present embodiment termination rotary column pin 182 and mounting holes 188 thereof, catch ring 100 and attached catch ring respectively have three uniform on all four radial teeth, and it is all optional to serve as the arrangement of spline groove 126 with the blocking teeth teeth groove, and is the needs for simplified structure and technology etc. purely.Can't encircle integrally formed special circumstances with its owner for attached catch ring, can adopt in advance it is made separately, more afterwards it and owner ring with or the mode of welding or interference fit etc. in addition the method for stiff assembly handle.As a same reason, though restricted spring 120 and Returnning spring 186 are wavy spring, also can be other any type of elastomer.
Below in conjunction with working procedure and with reference to Fig. 1 and Fig. 5 present embodiment is further described.
Under chimeric status, operation torque is passed to steel ball 60 through taper bush 208, second axle sleeve 206, steel ball hub 80, pass to fixed engagement element 50 through the steel ball 60 and the packing interaction of groove 52 again, referring to Fig. 5 (a) or 5 (e), and pass to connection revolving member thereon by the tapped hole on the fixed engagement element 50 64.Certainly, direction of transfer also can be opposite.During overload, just the axial counter-force that on the surface of contact of steel ball 60 and groove 52, produced of institute's torque transmitted provided greater than spring 160 chimeric pressure the time, steel ball 60 will inevitably withdraw from groove 52, so the engomphosis relation of the chimeric mechanism of steel ball has not existed, transmission of torque route between load and the power source is disconnected, thereby has guaranteed the safety of whole axle system or equipment.
After overload separation begins, because parameter A G＜D is arranged
cRestriction, therefore, when the axial separation distance of pushing ring 90 relative fixed joint elements 50 reaches D
cThe time, attached blocking teeth stops that the minimum point A of working surface 148 axially crosses the minimum point G that blocking teeth stops working surface 108 already on it, referring to Fig. 5.Be still on the fixed engagement element 50 owing to catch ring 100 restrained springs 120 again, therefore, as long as the inlet nargin K that stops chimeric mechanism is not away from its lower limit, separating process reaches D with regard to sufficient to guarantee for the first time synchronously in the axial separation distance of the chimeric mechanism of control in the rotation
cThe time, attached blocking teeth stops that just jump onto blocking teeth reliably stops working surface 108 to working surface 148, conflict mutually and set up stable self-locking static friction and concern, and then drive catch ring 100 circumference on the datum end face 54 of fixed engagement element 50 and trackslip, thereby will push encircle 90 and fixed engagement element between the axial separation process stop on the maximum separation distance.Therefore, pushing ring 90 maintains D with the axial separation distance of fixed engagement element 50
cConstant on the value, steel ball 60 is between the said two devices on axially, and constant with the axial spacing of the two is zero, that is, steel ball 60 surmounts slip or rolling friction operating mode with zero contact that fixed engagement element 50 is in no any harmful impact and collision.This will significantly reduce both rates of wear, abate the noise, and prolong life of clutch.
Owing to used the chimeric mechanism of bidirectional obstruction, on both direction so the safety clutch of present embodiment all has and do not have the characteristic of separating impact and collision.Should be emphasized that controlling the screw face characteristics that stop working surface in the chimeric mechanism is the preconditions that guarantee to stop steel ball zero collision in the operating mode,, must require λ＞0 that is.And | δ |＜λ≤ρ stops the necessary condition that stops friction self-locking between the working surface in the operating mode, also be to stop that chimeric mechanism possesses the ability of self adaption axial separation distance and the ability of the various axial wearing and tearing of automatic compensation within the specific limits, promote the overall performance of safety clutch and the necessary condition in working life, and compensable amount also can be given as required when making.Especially, when δ＞0 and 0＜λ＜δ, attached blocking teeth 142 will climb because of two of top contact being stopped working surface can not self-locking trackslips relatively, and order stops that the axial separation distance of chimeric mechanism is greater than D
c, until running into spacing preiection 114.That is, through suitable design, the overload that can obtain making steel ball not be subjected to axially compressing is rotated operating mode.In addition, the self-locking relation between the working surface that stops only is present in the corresponding overload rotation, promptly, being present in order is in positive the relatively rotating to the lift angle that stops working surface in the top contact, to make it be in the relatively rotating of bearing and never be present in, because the lift angle λ ' during rotate back one=-λ＜-| δ |, λ ' has dropped on outside the lower limit of self-locking necessary condition λ ' 〉=δ fully.Therefore, change and stop that fixed engagement element 50 is encircled 90 the direction that relatively rotates with pushing in the operating mode, stop that original self-locking relation will disappear immediately between the working surface, catch ring 100 will no longer be followed attached blocking teeth 142 unitary rotation, but be still on the reference rings datum end face 54.
So, resetting for the chimeric of safety clutch, a kind of method of present embodiment is exactly kinematic inversion, and the precondition of enforcement is exactly essential K＞θ
c+ θ
f+ η.At this moment, no matter which kind of extreme case appears, as long as make the active member of safety clutch oppositely turn over a steel ball groove 52 at most, promptly, make fixed engagement element 50 relative pushing rings 90 make and relatively rotate and turn over a groove 52 in relative rotation in contrast to overload, what attached blocking teeth 142 can both slip away blocking teeth 102 stops working surface 108, with synchronous chimeric the resetting of steel ball, and situation about stopping can not appear oppositely separating, especially when having used the chimeric mechanism of one-way check, blocking teeth teeth groove mouth rotates synchronously in company with attached blocking teeth 142 especially, referring to Fig. 5 (f).The chimeric another kind of method that resets has been to use the spline method of catch ring rotation preventive mechanism in the present embodiment.Promptly, when keeping overload rotation situation, axially the interlock of compressing spline pin encircles 180, make after its axial counter-force that overcomes spring 186 in the spline groove 126 that spline pin 182 axially is pressed on the catch ring slip end face 124, catch ring 100 circumferentially stopped at make on its specific relative position of losing axial blocking capability, so, attached blocking teeth 142 is forced to relative blocking teeth 102 and trackslips and climb, and after the spacing preiection 114 of crossing its middle part, embed in the next teeth groove of catch ring 100, thereby realize the controlled chimeric purpose that resets of clutch.
Obviously, the chimeric of the present invention's safety clutch resets, and mechanism is simple, and process is reliable, easily is automated and telecontrol, will promote its working speed and torque, expands its application area.
It should be noted that catch ring rotation preventive mechanism and the controlled chimeric spline method that resets all are nonessential optional structure or methods.And if use this structure and method, the lift angle β of the flank 118 of blocking teeth tooth top middle part spacing preiection just must satisfy inequality so: | δ |≤β＜90 °-φ, and with this side 118 and stop that working surface 108 coplanes are the best, that is, β=λ.In addition, the catch ring rotation preventive mechanism also can be other form of radial mode etc., and related description can be consulted the embodiment of Figure 18.
If present embodiment is pure unidirectional safety clutch, can adopt so only to have chimeric mechanism of stopping of one-way check function, shown in Fig. 5 (f), at this moment, the circumferential degrees of freedom of this chimeric mechanism can be zero.In addition, optional to the constraint of catch ring 100 in the present embodiment, the purpose of doing so just stops that in order definitely to guarantee chimeric mechanism can set up the relation that axially stops in the very first time.And that the mode of constraint also is not limited to length of spring compressed is a kind of, can also be to make the whole or local of fixed engagement element 50 or catch ring 100 to cause the mode of the two magnetic attracting with magnetic material, perhaps catch ring 100 is made the mode of the elastic opening ring of tape spool shoulder, perhaps make the elastic opening ring of band taper turning surface, or the radial elastic masterpiece is used on the local taper turning surface of catch ring 100, such as the radially compressing mode of spring ball and snap ring etc.About catch ring 100 and constrained procedure thereof, stop the relation of chimeric mechanism, spacing chimeric mechanism, they and other member, and about the explanation of δ and ρ, at the application number that applicant proposes is in 200720146912.5 and 200720146911.0 Chinese patent and the patent of invention of the same name thereof more detailed careful description to be arranged, these four patents by the application institute reference, are no longer described in detail at this on the whole.
Fig. 6 shows that to have stopping of a various profiles of tooth chimeric mechanism all possible to the top contact situation in stopping operating mode.Among Fig. 6 (d)～(i) | δ |＜λ≤ρ, expression be to realize separating zero contact friction of tooth tooth top, and have all profiles of tooth relations of the chimeric mechanism of control of integrated abrasion compensation.What Fig. 6 (d) represented is the situation of β ≠ λ; What Fig. 6 (e)～(i) represented is the flank 118 and the special case that stops working surface 108 coplanes of β=λ and blocking teeth tooth top middle part spacing preiection entirely, and this situation helps manufacturing.Fig. 6 (a), Fig. 6 (b) and Fig. 6 (j) are corresponding to the various profile of tooth relations that the collision type wearing and tearing are arranged after the overload separation.
Need to prove, owing to stop that working principle, relation and the process of chimeric mechanism etc. are identical, thus will no longer award repeat specification in following examples, and only concrete structure is carried out necessary explanation.
Embodiment two shown in Fig. 7～Fig. 9 is simple deformation of Fig. 1 embodiment.Do not have the catch ring rotation preventive mechanism, stop that working surface all is positioned at pushing ring 90 1 sides.Therefore, as shown in Figure 9, catch ring 100 has correspondingly made the form of axialmode matrix into, is formed with the interior shaft shoulder 128 of convenient constraint stage clip 120 application of forces in the ring.Three blocking teeths 102 are distributed on the same end face of ring-type matrix 112, and its axial length increases, and dodge through hole 84 to pass on the steel ball hub 80, form with the attached catch ring that is attached to pushing ring 90 endoporus places and stop chimeric mechanism.As shown in Figure 8, convex endoporus cylndrical surface, two-way attached blocking teeth 142 footpaths for pushing ring 90.In addition, also be formed with positioning hole 92 on the pushing ring 90, with the engomphosis relation that convexes to form on the corresponding end-faces on the steel ball hub 80, to guarantee the stable of attached catch ring and 60 circumferential relative positions of steel ball.It must be noted that the requirement of this stable circumferential relative position relation only is present in the clutch that has used the chimeric mechanism of bidirectional obstruction, and is not present in the clutch that has used the chimeric mechanism of one-way check.In addition, catch ring 100 forms circumferential spacing relation by dodging through hole 84 with steel ball hub 80, and its circumferential degrees of freedom must be greater than the inlet nargin K that stops chimeric mechanism.
Embodiment three shown in Figure 10 has the common form of the spring steel ball safety clutch before structure occurs among Fig. 1.It is different with structure maximum among Fig. 1 that to be to push ring 90 are rigidity one with steel ball hub 80, correspondingly, steel ball hub 80 can only circumferentially be fixed on the form of spline on second axle sleeve 206, and for the purpose of stable, spring seat 162 also circumferentially is fixed on second axle sleeve 206 with the form of spline.The most directly, the bidirectional obstruction ring 100 of elastic opening loop type directly is sleeved on the basic circle cylinder on the fixed engagement element 50, supported by datum end face 54 on axially.Attached blocking teeth 142 is formed directly on the external cylindrical surface of steel ball hub 80.Fixed engagement element 50 and 206 on second axle sleeve are separated with sliding bearing 220, are separated with packing ring 166 between spring seat 162 and the adjusting nut 164.
Embodiment four shown in Figure 11 still has Fig. 1 embodiment's core texture.In this example, stop on chimeric mechanism radially and be positioned at outside the chimeric mechanism of steel ball, its catch ring 100 is sleeved on the path external cylindrical surface of fixed engagement element 50 with the form of fitting end face towards pushing ring 90, restricted spring 120 is placed between catch ring 100 and the steel ball hub 80, catch ring 100 is pressed on the datum end face 54, makes it be still in fixed engagement element 50 relatively.Attached blocking teeth 142 is integrally formed on the external cylindrical surface of pushing ring 90, forms the chimeric mechanism of bidirectional obstruction with catch ring 100.For improving reliability, the set bar 86 of axialmode is embedded in above the steel ball hub 80 on the end face that pushes ring 90, and can embed axially slidably in the latter's the respective end face simultaneously, to guarantee that steel ball hub 80 encircles the constant of 90 circumferential positions with pushing in the whole work period.In addition, spline pin interlock ring 180 also correspondingly is installed on the external cylindrical surface of fixed engagement element 50, and circumferentially fixing by the axial groove on its big footpath external cylindrical surface, and Returnning spring 186 is installed therebetween.Its spline pin 182 is the end face dentation, near but do not touch catch ring 100.Accordingly, be formed with spline groove 126 on the slip end face 124 of catch ring 100
Embodiment five shown in Figure 12 is a kind of structures that have higher working speed in the steel ball safety clutch.The maximum difference of comparing Fig. 1 embodiment is that pushing ring 90 has had the function that radially limits and contain steel ball 60, and correspondingly, the through hole 82 that holds steel ball on the steel ball hub 80 is radially open grooves, only has the ability of circumferential restriction and containing steel ball 60.Simultaneously, increased bearing 218 between fixed engagement element 50 and its axial limiting snap ring 210.The layout that stops chimeric mechanism in the present embodiment is same as Figure 11 embodiment fully, but only has the one-way check function, and the constraint of its catch ring 100 is by the mode of constraint snap ring to cone shape hole.Wherein, constraint snap ring 122 is installed in the annular groove of the fixed engagement element 50 that is arranged in catch ring 100 inner cylindrical surfaces, cooperate with the taper shaft shoulder on catch ring 100 inner cylindrical surfaces,, force catch ring 100 axially to be adjacent to datum end face 54 by the radical elasticity of snap ring 122 and the tapering of conical surface.
Embodiment six shown in Figure 13 has the simplest structural type that is different from Fig. 1 embodiment.In the present embodiment, steel ball hub 80 be external joint element be again reference rings, fixed engagement element 50 and first axle sleeve, 204 rigidity one, all members are all installed based on first axle sleeve 204.Steel ball hub 80 axially is limited on the end face of fixed engagement element 50 by snap ring 210.Stop on chimeric mechanism radially to be positioned at outside the chimeric mechanism of steel ball, be located axially between steel ball hub 80 and the pushing ring 90.Wherein, catch ring 100 has the radial mode matrix, and its blocking teeth 102 is integrally formed on the inner cylindrical surface of open elastic ring shape matrix.This ring is installed on the basic circle cylinder 56 in the outer end face ring of steel ball hub 80 88, and this basic circle cylinder 56 has certain tapering, and therefore, by elastic force, catch ring 100 can be adjacent to datum end face 54, and it is static relatively.The owner that pushing ring 90 serves as attached catch ring with its integral body as the form of the ring-type matrix of attached blocking teeth 142 encircles, and three attached blocking teeths 142 are distributed on the external cylindrical surface of pushing ring 90.In theory, because overload back steel ball 60 is difficult to rotate, so the safety clutch of present embodiment original structure has the big shortcoming of wearing and tearing.But increased stop chimeric mechanism after, this shortcoming will obtain very big improvement, structural advantages will obtain bigger performance.
Embodiment seven shown in Figure 14 has the core texture that is same as Figure 13 embodiment fully.Having overturn on difference is axially stops the position of chimeric mechanism, serves as reference rings by pushing ring 90, is served as owner's ring of attached catch ring by steel ball hub 80.That is, three unidirectional attached blocking teeths 142 circumferentially are integrally formed on the end face in the face of pushing ring 90 of steel ball hub 80 equably.Catch ring 100 is to be formed with the shaft shoulder on the inner cylindrical surface, is evenly equipped with the elastic opening ring of three one-way check teeth 102 on the external cylindrical surface.This ring is installed on the external cylindrical surface that pushes outside the ring 90, is subjected to the unidirectional support of the shaft shoulder on this external cylindrical surface.The endoporus shaft shoulder of catch ring 100 will be guaranteed this ring and pushing ring 90 axially movable synchronisms.
Embodiment eight shown in Figure 15 has the structural type that is same as Figure 14 embodiment fully.Difference only is to stop on the details of chimeric mechanism.That is, three attached blocking teeths 142 no longer protrude from the end face of steel ball hub 80, but disappearance is between the both ends of the surface of steel ball hub 80, as shown in figure 16.Simultaneously, catch ring 100 is complete rings, and its three bidirectional obstruction teeth 102 circumferentially are integrally formed on the exterior edge face of path ring of stepped shaft ring-type matrix 112 equably.Protrude from pushing ring 90 on the ring outer end, big footpath of this stepped shaft ring-type matrix 112 is axial, constraint snap ring 122 is installed in the corresponding annular groove of this end.The restricted spring 120 that occupy them between the two is constraining in catch ring 100 on the support shaft shoulder that pushes ring 90, in the time of just on the datum end face, has also guaranteed catch ring 100 and pushing ring 90 axially movable synchronisms.
In the present embodiment, stop that chimeric mechanism also can be the one-way type as Figure 14 embodiment.Be not difficult to learn that the quantity of steel ball 60 is few more by Figure 16, what the chimeric mechanism of bidirectional obstruction was unidirectional relatively stops that chimeric mechanism is big more to the weakening degree of the circumferential strength of steel ball hub 80.Because when unidirectional, stop that the circumferential degrees of freedom of chimeric mechanism can be zero.
Embodiment nine shown in Figure 17 has the spacing pattern of radial mode, and the structural type that is same as Fig. 1 embodiment fully.Most crucial difference is to stop that all stop that the lift angle of working surface is zero in the chimeric mechanism, referring to Fig. 6 (j), the limit method of spacing chimeric mechanism no longer relies on the self-locking that stops working surface or the spacing preiection 114 of blocking teeth tooth top, and attached limited ring is no longer same fully with attached catch ring, but is attached to independently on second axle sleeve of circumferentially fixing with attached catch ring 206.That is, the spacing preiection of attached limited ring is taken on by position limit pin 94, this position limit pin 94 be embedded in second axle sleeve 206 directly in the face of on the cylndrical surface of catch ring 100 inner hole surface, cooperates the spacing chimeric mechanism of composition with corresponding limited impression on catch ring 100 inner hole surface.Certainly, position limit pin 94 also can be embedded on the directly corresponding end-faces in the face of the ring-type matrix end face of catch ring 100 of second axle sleeve 206, cooperates the spacing chimeric mechanism of composition with corresponding limited impression on this ring-type matrix end face.The circumferential degrees of freedom X of spacing chimeric mechanism is greater than the inlet nargin K that stops chimeric mechanism.Determine that with such effect spacing chimeric mechanism reaches the circumferential size of member separately with stopping the circumferential relative position of chimeric mechanism, promptly, chimeric mechanism is to one-way check: stopping under the chimeric state of chimeric mechanism that position limit pin 94 must touch the spacing working surface of limited impression on the inoperative direction; Chimeric mechanism is to bidirectional obstruction: spacing chimeric mechanism must not hinder and stop that chimeric mechanism sets up the relation that stops on both direction, and with two mechanisms can be simultaneously placed in the middle chimeric orientate the best as.Static for the constraint that guarantees catch ring 100 relative fixed joint elements 50, this ring is made into to be evenly equipped with on the external cylindrical surface elastic opening ring of three blocking teeths 102.
As previously mentioned, when overload takes place, attached blocking teeth 142 will jump onto and stop working surface 108.Because lift angle λ=0 that stops working surface, and physical dimension AG＜D
cRestriction, therefore, reach maximum value D separating chimeric mechanism separating distance
cThe time, certainly exist axial clearance between the blocking teeth, stop that chimeric in-house stopping between the working surface must self-locking maybe can't stablize self-locking.So under the situation that does not have spacing preiection 114, attached blocking teeth 142 catch ring 100 relatively is rotated further, until the circumferential degrees of freedom of using up spacing chimeric mechanism.With attached blocking teeth 142 circumferential fixing position limit pins 94 will drive catch ring 100 relative fixed joint elements 50 trackslip, thereby form push stable stop of ring 90 thereafter.But this stable stopping can not stop at its axially movable ultimate range D with pushing ring 90
cOn, be AG and D but make it moving axially distance
cThese two positions between jump back and forth, and corresponding axial internal clearance is exactly the residue impact momentum of steel ball.Obviously, present embodiment is absence of collision embodiment superior performance as described above not, but collision is very small, the technical scheme that still is better than prior art.
And chimeric oppositely relatively rotating in the process of resetting, because steel ball 60 intermittently causes pushing ring 90 can not touch catch ring 100, so, catch ring 100 disengages the phase at this at least and can be still on the basic circle cylinder of fixed engagement element 50 by constraint certainly, is equal to and stops that chimeric mechanism can not self-locking, therefore, as described in first embodiment, stop that chimeric mechanism is easy to realize chimeric resetting, that is, the chimeric mechanism of whole steel ball is easy to realize chimeric resetting.
Understand easily, when the lift angle λ that stops working surface is: during 0＜λ＜δ, stop that chimeric mechanism is impossible self-locking, its chimeric resetting is same as first embodiment fully.And clearly, force the chimeric repositioning method of spline catch ring 100 not to be suitable for present embodiment.
Shown in Figure 18 is the concrete application of the present invention in coupling, and it is improved by Fig. 7 embodiment and gets.Wherein, the outer end of fixed engagement element 50 is provided with lug 224, also is provided with on the corresponding end-faces on first joint element 222 of coupling to be filled with star elastic component 226 between lug 224, two lugs to form the star elastic coupling flexible coupling.
Kinematic inversion and spline method may be used to chimeric the resetting after the present embodiment overload.Be different from Fig. 1 embodiment, adopted the catch ring rotation preventive mechanism of radial mode in the present embodiment.That is, cover is embedded in the radial direction through hole of fixed engagement element 50 slidably with spring on the shaft shoulder of spline pin 182 radial outer ends, week upwards between the steel ball groove, its pin end face near but non-contravention to catch ring 100.Corresponding position at catch ring 100 external cylindrical surfaces is provided with spline groove 126, on the corresponding external cylindrical surface of fixed engagement element 50, be mounted with spline pin interlock ring 180, the inner cylindrical surface of this ring is a fluted body camming surface, this camming surface cooperates with the outer end of spline pin 182 and by this pin axial limiting, when circumferential braking spline pin interlock ring 180, when just this cam relative fixed joint element 50 rotates, spline pin 182 radially can be pressed in the spline groove 126 of catch ring 100, make on its relative position of losing axial blocking capability thereby catch ring 100 circumferentially stopped at.And withdraw from above-mentioned circumferential braking, centrifugal force and radial elastic power will force spline pin 182 to get back to the maximum outside diameter place of camming surface once more, thereby make its pin top deviate from spline groove 126.
About the working mechanism of spline method, the circumferential position of relevant radial direction through hole and spline groove 126 relation, and the explanations such as span of the lift angle β of the flank 118 of blocking teeth tooth top middle part spacing preiection are same as Fig. 1 embodiment fully, no longer repeat here.
Owing to stop on chimeric mechanism radially to be positioned at outside the chimeric mechanism of steel ball, so embodiment illustrated in fig. 1 relatively, the residual torque after Figure 10～embodiment shown in Figure 15 is transshipped all will be evident as greatly.Certainly, if with its move to the chimeric mechanism of steel ball radially within, this is not enough just not to have existed.
Below only be to the present invention is directed to description and the diagram that its limited embodiment gives, has particularity to a certain degree, but it should be understood that, mentioned embodiment is used for describing, its various variations, the layout that is equal to, exchanges and change structure or each member all will be considered to not be separated from the spirit and scope that the present invention conceives.
Claims (13)
1. Zero-impact spring steel ball safety clutch, comprise fixed engagement element, steel ball, the steel ball hub, the pushing ring, spring and adjusting nut, and all arrange based on same revolution shaft axis, the steel ball hub is located axially between fixed engagement element and the pushing ring, spring is between pushing ring and adjusting nut, steel ball places the axial bore or the groove of steel ball hub, in the groove under the compressing of pushing ring on the part of the steel ball embedding fixed engagement element corresponding end-faces, steel ball hub and pushing ring can form as one, wherein, fixed engagement element and steel ball hub transmit input torque and output torque respectively, adjusting nut is connected on the rotor of circumferentially fixing with fixed engagement element or steel ball hub, under the effect of described spring, fixed engagement element, steel ball, steel ball hub and pushing ring are formed the chimeric mechanism of steel ball, it is characterized in that:
(a) be furnished with and stop the overload separation state chimeric mechanism shaft of described steel ball down,, all be formed with the blocking teeth that possesses axial barrier functionality on these two rings by catch ring and axial chimeric the forming of attached catch ring to the chimeric chimeric mechanism that stops; Described attached catch ring and its owner's annular become one, and the described minimum barrier height that stops chimeric mechanism is less than the chimeric degree of depth of full-depth tooth of the chimeric mechanism of described steel ball;
(b) be furnished with the spacing chimeric mechanism that stops that to described the circumferential relative position of catch ring is implemented restriction in the chimeric mechanism, form by catch ring and attached limited ring; Attached limited ring and its owner's annular become one, and described attached limited ring and described attached catch ring are circumferentially fixing; The described axial separation distance that stops chimeric mechanism is during greater than described minimum barrier height, and the circumferential degrees of freedom of described spacing chimeric mechanism is greater than the described inlet nargin that stops chimeric mechanism.
2. by the described safety clutch of claim 1, it is characterized in that: describedly stop chimeric mechanism, be located axially between external joint element encircles with pushing, be positioned on radially within the chimeric mechanism of described steel ball or outside; Described catch ring is subjected to the unidirectional support of reference rings datum end face, and its slip end face and this datum end face formation circumferentially are free to slide friction pair; Described external joint element is fixed engagement element or steel ball hub, and owner's ring of described attached catch ring is pushing ring or external joint element, and described reference rings is to encircle relative external joint element or pushing ring with the owner of described attached catch ring.
3. by the described safety clutch of claim 1, it is characterized in that:
(a) working surface that stops of described blocking teeth and attached the two tooth top of blocking teeth is two, and these two stop that working surface is formed at the both sides of each Topland respectively accordingly;
(b) the described inlet nargin K of chimeric mechanism that stops meets inequality: K＞θ
c+ θ
f+ η, relevant parameter is defined as follows:
θ
c: in safety clutch revolution circumference, the pairing circumference angle of intersection point on steel ball centre of sphere place turning circle cylinder and the fixed engagement element fitting end face between the two adjacent steel ball groove upper edges;
θ
f: in safety clutch revolution circumference, the pairing circumference angle of intersection point between steel ball centre of sphere place turning circle cylinder and the steel ball equivalent Topland border;
η: because the reduction value that lead angle etc. bring.
4. by each described safety clutch of claim 1～3, it is characterized in that:
(a) described fixed engagement element be reference rings be again external joint element, owner's ring of described attached catch ring is the pushing ring, the pushing ring is circumferentially fixing with the steel ball hub, directly in the face of the inner cylindrical surface or the end face of catch ring, its owner's ring is and the circumferentially fixing described rotor of steel ball hub described attached limited ring;
(b) described spacing chimeric mechanism, be one be formed between described attached limited ring and the described catch ring respective surfaces radially or axial chimeric mechanism.
5. by each described safety clutch of claim 1～3, it is characterized in that:
(a) described attached limited ring and described attached catch ring are same ring, described spacing chimeric mechanism stops that with described chimeric mechanism overlaps the back and constitutes the chimeric mechanism of a control, this is controlled in the chimeric mechanism, and blocking teeth also is a limiting tooth simultaneously, and attached blocking teeth also is attached limiting tooth simultaneously;
(b) in the chimeric mechanism of described control, the working surface that stops of blocking teeth and attached the two tooth top of blocking teeth is the helicoid that lift angle is not more than ρ, and the middle part of a Topland is formed with spacing preiection at least therein, here, ρ can make stopping the maximum lift angle that stops working surface that stops the secondary successful self-locking of the working surface formed static friction of axial contact in the operating mode by both party;
(c) the maximum spacing chimeric degree of depth of described spacing chimeric mechanism is greater than the chimeric degree of depth of full-depth tooth of the chimeric mechanism of described steel ball.
6. by the described safety clutch of claim 5, it is characterized in that: the spacing preiection in the chimeric mechanism of described control with the side that stops the working surface homonymy, be that lift angle is the helicoid of β, | δ |≤β＜180 °, wherein, | δ | be can make stopping in the operating mode by blocking teeth and stopping that working surface and attached blocking teeth stop that working surface axially contact the absolute value of the minimum lift angle that stops working surface of the successful self-locking of formed static friction pair.
7. by each described safety clutch of claim 1～3, it is characterized in that: the catch ring in the chimeric status can be still in relatively on the datum end face or basic circle cylinder of reference rings by constraint.
8. by the described safety clutch of claim 6, it is characterized in that:
(a) between reference rings and catch ring, be provided with the catch ring rotation preventive mechanism, this mechanism is the circumferential position-limit mechanism of chimeric class that catch ring and reference rings can be forced to be limited on the specific circumferential relative position, when this mechanism is chimeric, catch ring loses axial blocking capability, this mechanism is non-when chimeric, and catch ring has axial blocking capability;
(b) the lift angle β of the described side of described spacing preiection satisfies inequality: | δ |≤β＜90 °-φ, wherein, φ is a friction angle of forming both sides' formed friction pair of rubbing contact on the side of described spacing preiection of the chimeric mechanism of described control, | δ | define the same.
9. by the described safety clutch of claim 8, it is characterized in that: described catch ring rotation preventive mechanism, by on reference rings datum end face or the basic circle cylinder axially or the chimeric mechanism of cotter way formula that forms of the corresponding recesses on the radial direction through hole, the corresponding rubbing surface of catch ring or trip ring breach and spline pin.
10. by the described safety clutch of claim 3, it is characterized in that: the pushing ring is circumferentially fixing with the steel ball hub.
11. by the described safety clutch of claim 8, it is characterized in that: the pushing ring is circumferentially fixing with the steel ball hub.
12., it is characterized in that: described circumferentially fixing by the realization of the chimeric mechanism of an axial pin cellular type by the described safety clutch of claim 10.
13. by each described safety clutch of claim 1～3, it is characterized in that: catch ring is considered as ring-type matrix and blocking teeth annular component dimerous, and described blocking teeth is formed on the two ends or inside and outside cylndrical surface of described ring-type matrix.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710152154A CN100594309C (en) | 2007-09-18 | 2007-09-18 | Zero-impact spring steel ball safety clutch |
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| CN200710152154A CN100594309C (en) | 2007-09-18 | 2007-09-18 | Zero-impact spring steel ball safety clutch |
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| CN101117990A CN101117990A (en) | 2008-02-06 |
| CN100594309C true CN100594309C (en) | 2010-03-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101672332B (en) * | 2008-09-08 | 2013-10-02 | 洪涛 | Self-supporting separation retaining mechanism for axial auto-controlled clutch |
| CN102537125B (en) * | 2010-12-30 | 2016-05-11 | 洪涛 | Spatial-wedging friction connector |
| CN102319910A (en) * | 2011-08-05 | 2012-01-18 | 沈阳机床（集团）设计研究院有限公司 | Synchronous overload protection structure for servo tool post |
| CN102506043B (en) * | 2011-09-26 | 2014-12-24 | 浙江吉利汽车研究院有限公司 | Retainer ring component of shaft |
| CN103644213B (en) * | 2013-12-04 | 2016-01-13 | 兰州飞行控制有限责任公司 | A kind of limiter of moment |
| CN106392938B (en) * | 2016-11-24 | 2017-12-08 | 兰州飞行控制有限责任公司 | The bonding jig of flexible gyroscope torque shaped framework coil |
| CN108340357B (en) * | 2018-04-24 | 2023-04-07 | 中国科学院地球化学研究所 | Five-degree-of-freedom floating compensation device |
| CN115107078A (en) * | 2021-03-23 | 2022-09-27 | 上海海立电器有限公司 | Rotary driving device and equipment |
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