CN209586982U - Crown gear coupling and gear train assembly with it - Google Patents
Crown gear coupling and gear train assembly with it Download PDFInfo
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- CN209586982U CN209586982U CN201822244747.8U CN201822244747U CN209586982U CN 209586982 U CN209586982 U CN 209586982U CN 201822244747 U CN201822244747 U CN 201822244747U CN 209586982 U CN209586982 U CN 209586982U
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- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 57
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 11
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Abstract
The utility model provides a kind of crown gear coupling and the gear train assembly with it, and crown gear coupling includes: sleeve, and sleeve includes cylinder and the interior teeth portion that is arranged on the inner peripheral surface of cylinder；Rack barrel, at least part of rack barrel is arranged in the cavity of sleeve, rack barrel includes body, extension and cydariform teeth portion, extension extends from the first end of body to the second end of body, the annular gap with opening is formed between extension and body, cydariform teeth portion is arranged on the outer peripheral surface of extension, and cydariform teeth portion is meshed with interior teeth portion, rack barrel can relative sleeve occur to swing and axial movement, there is on the outer peripheral surface of body the first arcwall face outwardly protruded；Annular seal, annular seal are set on the outer peripheral surface of body, and the first end of annular seal and the first arc face contact, the second end and cylinder direct or indirect connection of annular seal.The program is able to solve the problem of crown gear coupling leakproofness difference.
Description
Technical field
The utility model relates to shaft coupling technical field, in particular to a kind of crown gear coupling and with its
Gear train assembly.
Background technique
Shaft coupling is mainly used to connect two axis (driving shaft and driven shaft) in different institutions, and be allowed to rotate jointly with
The completing torque transmitting of the task, has a very wide range of applications in mechanical transmission.In field of track traffic, shaft coupling is
Critical component on rail vehicle truck, carry transmitting hauled load and small electromotor output shaft and high speed shaft of gearbox it
Between offset deviation important function.In the power transmission of rail traffic high-speed overload, shaft coupling must also have buffering, subtract
Vibration and the effect for improving dynamic property.
The type of shaft coupling is very more, can be with usually according to the change conditions for the relative position and position for being connected two axis
It is divided into two class of permanent coupling and movable coupling.Permanent coupling is mainly used for the stringent centering of two axis requirements and in work
The place of relative displacement does not occur in work.Movable coupling, which is mainly used for two axis, to be had deflection or has relative displacement at work
Occasion.According to the method for compensation displacement, movable coupling is divided into rigidity moveable coupling and elastic movable coupling.Drum
Shape gear coupling belongs to the one of which in rigidity moveable coupling, because its with relatively large axial direction, radial displacement and
Angular displacement compensation ability and widely used in all kinds of machine driven systems such as rail traffic, ship, mine.
Crown gear coupling is mainly made of sleeve, the rack barrel with external tooth with internal tooth, internal tooth and external tooth phase
Mutually engagement.Since the external tooth of rack barrel is processed to cydariform, allow that angular displacement occurs between sleeve and rack barrel
And axial displacement, to allow the driving shaft connected by crown gear coupling and driven shaft that opposite position occurs in rotary motion
It moves.
The usual side of crown gear coupling is connected with the output shaft (driving shaft) of motor, the other side of crown gear coupling
It is connect with the input shaft (driven shaft) of gear.
Since two axis that crown gear coupling is connected in the process of running can generate relative displacement, the flank of tooth week of interior external tooth
Phase property makees axial opposite sliding, necessarily will form tooth surface abrasion and power loss.For the abrasion and relative movement for reducing the gear teeth
Frictional resistance, shaft coupling need it is good lubrication and sealing in the state of work.
Patent CN1181469A, which discloses one kind, can ensure that leakproofness and extension when two axis axle center of connection misplace
The shaft coupling of seal life, the patent are mainly slidably arranged in cydariform using the spring pushing being arranged on rack barrel axis body
The face adapted of the sealing element and end cap with dome shape sealing surface on gear body outer peripheral surface, which is realized, to be in close contact, to enhance
The leakproofness of shaft coupling, and the abrasion of sealing element is reduced, extend the service life of sealing element.
Patent CN1101899C discloses a kind of connection that can be avoided Medium Exchange and avoid sealing part abrasion in the running
Axis device, the scheme used are that one is at least arranged between coupling sleeve and each connector to be fixed on one of two parts
, along axial bellows, which had not only sealed synchronous gear wheel set, but also can flexibly adjust the position of coupling sleeve.
The above patent or other in the prior art, the rack barrel of crown gear coupling when relative sleeve deflects,
Sealing element and rack barrel it is poorly sealed close, the different parts abrasion of sealing element is uneven, significantly affects shaft coupling
Sealing effect and service life.
Utility model content
The utility model provides a kind of crown gear coupling and the gear train assembly with it, to solve the prior art
In crown gear coupling leakproofness difference problem.
To solve the above-mentioned problems, one aspect according to the present utility model, the utility model provide a kind of barreled tooth flank
Shaft coupling, comprising: sleeve, sleeve include cylinder and the interior teeth portion that is arranged on the inner peripheral surface of cylinder；Rack barrel, rack barrel
At least part be arranged in the cavity of sleeve, rack barrel includes body, extension and cydariform teeth portion, and extension is from body
First end extend to the second end of body, the annular gap with opening is formed between extension and body, cydariform teeth portion sets
It sets on the outer peripheral surface of extension, cydariform teeth portion is meshed with interior teeth portion, and rack barrel can relative sleeve generation swing and axial direction
It is mobile, there is the first arcwall face outwardly protruded on the outer peripheral surface of body；Annular seal, annular seal are set in body
On outer peripheral surface, and the first end of annular seal and the first arc face contact, the second end and cylinder of annular seal directly or
It is indirectly connected with.
Further, the axial direction perpendicular to cydariform teeth portion and by being put down centered on the plane at the midpoint of the width of cydariform teeth portion
The highest point in face, the first arcwall face is located on central plane.
Further, the first arcwall face is spherical surface.
Further, the face where the tooth top of cydariform teeth portion is the second spherical surface, the centre of sphere of the first arcwall face and the second spherical surface
The centre of sphere be overlapped.
Further, body includes sequentially connected first set section and second set of section, and extension is circumferentially positioned at first set
In section and to second set of Duan Yanshen, the first arcwall face is located on the outer peripheral surface of second set of section.
Further, the outer peripheral surface of second set of section is made of for the outer peripheral surface of spherical surface or second set of section spherical surface and cylindrical surface.
Further, crown gear coupling further include: position limiting structure is connect with cylinder, and position limiting structure is for limiting cydariform
The second end of the moving range of gear, annular seal is arranged on position limiting structure.
Further, position limiting structure includes: the second limiting section, the end connection of the second limiting section and cylinder, the second limit
Portion is located at the side that rack barrel has annular gap, and the second limiting section is used for and the body of rack barrel or prolonging for rack barrel
Extending portion abuts, and the second end of annular seal is fixed on the second limiting section.
Further, for abutting with the body of rack barrel, the second limiting section has and the first arc the second limiting section
Compatible second arcwall face in face.
Further, the second limiting section includes: first end cover, and the bigger diameter end of first end cover and the end of cylinder connect；Limit
The miner diameter end of first end cover is arranged in position part, and the second arcwall face is arranged on locating part, the second end and limit of annular seal
Part or first end cover connection.
Further, first end cover includes the ring-shaped article being arranged radially along cylinder and the tubular being axially arranged along cylinder
The end of part, ring-shaped article and cylinder connects, and tubular element is located at the side of the extension towards cydariform teeth portion of ring-shaped article, locating part
It is connect with the inner wall of tubular element.
Further, for the second limiting section for abutting with the extension of cydariform teeth portion, sleeve further includes the end with cylinder
The second end cover of connection, second end cover are arranged radially along cylinder, and second end cover has the mesoporous for allowing body to pass through, second end cover shape
At the second limiting section.
Further, the second end of annular seal is connect by fastener with second end cover.
Further, it is arranged fluted on the inner face of second end cover, the second end of annular seal is interference fitted in
In the groove of two end caps.
Further, annular seal includes skeleton, sealing element and supporting element, sealing element and supporting element respectively with skeleton
Two sides connection, wherein supporting element is connect with second end cover, sealing element and the first arc face contact.
Further, the side away from annular gap of the extension of rack barrel is provided with the first spherical surface, position limiting structure
Further include: the first limiting section is fixed in the cavity of the cylinder of sleeve, the first limiting section be located at extension away from annular gap
Side, the first limiting section have third spherical surface, third spherical surface be adapted with the first spherical surface with limit the movement of rack barrel away from
From.
Further, there is first step, the first limiting section is tubular structure, the first limiting section on the inner peripheral surface of cylinder
There is second step, second step and first step limit cooperate on outer peripheral surface.
Further, the end face of the first limiting section is abutted with the end face of interior teeth portion.
Further, the first limiting section is tubular structure, is had between the outer wall of the first limiting section and the inner wall of cylinder close
Seal.
Further, crown gear coupling further include: a part of retainer ring, retainer ring is embedded in the inner wall of cylinder, retainer ring
Another part is abutted with the end face of the separate interior teeth portion of the first limiting section.
Further, the first limiting section is tubular structure, and the first limiting section has first through hole.
Further, there is the second through-hole, the second through-hole is connected to first through hole, and crown gear coupling also wraps on cylinder
Include: blocking, blocking is for blocking the second through-hole.
Further, there is third through-hole, third through-hole is used to be connected to the cavity of extension two sides on extension.
Further, there is oil guide groove on the inner peripheral surface of the body of rack barrel.
Further, crown gear coupling further include: bushing is arranged on the inner peripheral surface of body, the outer peripheral surface of bushing with
The inner peripheral surface of body is interference fitted.
Further, crown gear coupling includes two sleeves, two rack barrels and two annular seals, two sets
Cylinder is connected with each other, and two rack barrels are arranged in a one-to-one correspondence with two sleeves, and two annular seals and two sleeves one are a pair of
It should be arranged.
Further, annular seal includes skeleton and vulcanizes the sealing element being integrated with skeleton, and skeleton is interference fitted in
In the groove of the inner wall of the tubular element of first end cover, sealing element and the first arcwall face sliding contact.
Further, annular seal includes skeleton and vulcanizes the sealing element being integrated with skeleton, and skeleton is interference fitted in
In the groove of second end cover, sealing element and the first arcwall face sliding contact.
Another aspect according to the present utility model, provides a kind of gear train assembly, and gear train assembly includes above-mentioned
The crown gear coupling of offer, gear train assembly further include uni-drive gear box, and the input shaft and barreled tooth flank of uni-drive gear box join
The inner peripheral surface of the body of the rack barrel of axis device is adopting conical surface interference cooperation.
Using the technical solution of the utility model, interior teeth portion is set in the sleeve of crown gear coupling, in rack barrel
Extension on be arranged cydariform teeth portion, can be made in this way by the cooperation of cydariform teeth portion and interior teeth portion rack barrel relative sleeve occur
It swings and moves axially, be sealed by the cooperation of annular seal and body.Due to the outer peripheral surface of the body of rack barrel
Upper to have the first arcwall face, such rack barrel is when relative sleeve deflects, and the of the circumferential direction of annular seal and body
One arcwall face is uniformly contacted and is sealed.On the one hand it can guarantee there is preferable sealing effect in different location in this way, it is another
Aspect makes annular seal even wearing, so as to improve crown gear coupling sealing effect at runtime and use
Service life.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
The crown gear coupling that Fig. 1 shows the offer of the embodiments of the present invention one is in the structural representation of initial position
Figure；
Fig. 2 shows the structural schematic diagrams that the crown gear coupling in Fig. 1 is in obliquity；
Fig. 3 shows the structural schematic diagram that the crown gear coupling in Fig. 1 is in an extreme position；
Fig. 4 shows the structural schematic diagram that the crown gear coupling in Fig. 1 is in another extreme position；
Fig. 5 shows the structural schematic diagram of the crown gear coupling of the offer of the embodiments of the present invention two；
Fig. 6 shows the structural schematic diagram of the crown gear coupling of the offer of the embodiments of the present invention three；
Fig. 7 shows the structural schematic diagram that the crown gear coupling in Fig. 6 is in obliquity.
Wherein, the above drawings include the following reference numerals:
10, sleeve；11, cylinder；111, first step；12, interior teeth portion；13, second end cover；20, rack barrel；21, it covers
Body；211, the first arcwall face；212, first set section；213, second set of section；214, oil guide groove；22, extension；221, the first ball
Face；23, cydariform teeth portion；24, annular gap；25, third through-hole；30, the first limiting section；31, third spherical surface；32, second step；
33, first through hole；41, sealing ring；42, retainer ring；43, it blocks；44, fastener；50, annular seal；51, skeleton；52, it seals
Part；53, supporting element；60, the second limiting section；61, the second arcwall face；62, first end cover；63, locating part；70, bushing.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
As shown in Figures 1 to 4, the embodiments of the present invention one provide a kind of crown gear coupling, comprising: sleeve
10, sleeve 10 includes cylinder 11 and the interior teeth portion 12 being arranged on the inner peripheral surface of cylinder 11；Rack barrel 20, rack barrel 20
At least part is arranged in the cavity of sleeve 10, and rack barrel 20 includes body 21, extension 22 and cydariform teeth portion 23, extends
Portion 22 extends from the first end of body 21 to the second end of body 21, and the ring with opening is formed between extension 22 and body 21
Shape gap 24, cydariform teeth portion 23 are arranged on the outer peripheral surface of extension 22, and cydariform teeth portion 23 is meshed with interior teeth portion 12, barreled tooth flank
Wheel 20 can relative sleeve 10 occur to swing and axial movement, there is on the outer peripheral surface of body 21 the first arcwall face outwardly protruded
211；Annular seal 50, annular seal 50 are set on the outer peripheral surface of body 21, and the first end of annular seal 50 with
The contact of first arcwall face 211, the second end and 11 direct or indirect connection of cylinder of annular seal 50.
Using the technical solution of the present embodiment, interior teeth portion 12 is set in the cylinder 11 of the sleeve 10 of crown gear coupling,
Cydariform teeth portion 23 is set on the extension 22 of rack barrel 20, can be made in this way by cydariform teeth portion 23 and the cooperation of interior teeth portion 12
20 relative sleeve 10 of rack barrel occurs to swing and move axially, and is carried out by the cooperation of annular seal 50 and body 21 close
Envelope.In the present embodiment, interior teeth portion 12 is specifically made of multiple involute spurs, and cydariform teeth portion 23 is made of multiple barreled tooth flanks.
Due to having the first arcwall face 211 on the outer peripheral surface of the body 21 of rack barrel 20, when rack barrel 20 is sent out in relative sleeve 10
When raw deflection, the circumferential direction of annular seal 50 is uniformly to contact sealing with the first arcwall face 211 of body 21.It so on the one hand can
To guarantee that crown gear coupling has preferable sealing effect in different location, on the other hand make the difference of annular seal 50
Position abrasion is relatively uniform, so as to effectively improve crown gear coupling sealing effect at runtime and service life.
In the present embodiment, the axial direction perpendicular to cydariform teeth portion 23 and the plane at the midpoint by the width of cydariform teeth portion 23
Highest point for center plane, the first arcwall face 211 is located on central plane.In original state, one end of annular seal 50
With the circular contact where the highest point of the first arcwall face 211, in this way when rack barrel 20 is when relative sleeve 10 deflects,
The circumferential direction of annular seal 50 and the first arcwall face 211 of body 21 are in contact condition always, and elastic deformation amount is relatively less,
Sealing effect is more preferable.
Specifically, spherical surface can be set by the first arcwall face 211.Spherical surface is set by the first arcwall face 211, is covered in this way
For body 21 in rotation, even if the position of the first arcwall face 211 contacted with annular seal 50 can change, body 21 is in nothing
When axial displacement, the elastic deformation amount of annular seal 50 will not change；Body 21 is when there is axial displacement, ring packing
With the different parts of sphere-contact lesser homogeneous deformation also can only occur for portion 50.Therefore by the technical solution, can make
Obtaining the first arcwall face 211, different contacts site can realize good sealing, and annular seal from annular seal 50
The even wearing of 50 different contacts site, so as to significantly improve crown gear coupling sealing effect at runtime and
Service life.Spherical surface in the present embodiment is not complete spherical surface, it can be understood as annular spherical calotte.
In the present embodiment, the face where the tooth top of cydariform teeth portion 23 be the second spherical surface, the centre of sphere of the first arcwall face 211 with
The centre of sphere of second spherical surface is overlapped.By above-mentioned setting, rack barrel 20 will not generate additional when relative sleeve 10 deflects
Torque, therefore the abrasion or vibration of sleeve 10 Yu rack barrel 20 can be reduced, further extend making for crown gear coupling
Use the service life.
In the present embodiment, body 21 includes sequentially connected first set section 212 and second set of section 213,22 ring of extension
Around being arranged in first set section 212 and extending to second set of section 213, the first arcwall face 211 is located at the outer peripheral surface of second set of section 213
On.Specifically, the outer peripheral surface of second set of section 213 is made of for the outer peripheral surface of spherical surface or second set of section 213 spherical surface and cylindrical surface.
It is compact-sized convenient for crown gear coupling whole geometry structure and the reasonable Arrangement of shape by above-mentioned setting, and can ensure that drum
Shape gear 20 has enough intensity and detection easy to process.In the present embodiment, rack barrel 20 is an integral molding structure.It is preferred that
It is that forging is integrally formed, i.e., the forging blank of rack barrel 20 is first produced, after the machining for then carrying out cydariform teeth portion 23 again
Rack barrel 20 is made, is also possible to using other forming manufacture techniques.Certainly, if necessary to set rack barrel 20
It is set to separate structure.
In the present embodiment, crown gear coupling further include: position limiting structure is connect with cylinder 11, and position limiting structure is for limiting
The second end of the moving range of rack barrel 20 processed, annular seal 50 is arranged on position limiting structure.It can be with by position limiting structure
Rack barrel 20 and sleeve 10 is prevented to be detached from.
In the present embodiment, position limiting structure includes: the second limiting section 60, and the end of the second limiting section 60 and cylinder 11 connects
It connects, the second limiting section 60 is located at the side that rack barrel 20 has annular gap 24, and the second limiting section 60 is used for and rack barrel
20 body 21 or the extension 22 of rack barrel 20 abut, and the second end of annular seal 50 is fixed at the second limiting section
On 60.It can prevent rack barrel 20 from deviating from from sleeve 10 by the second limiting section 60.
Specifically, the second limiting section 60 is with the body 21 of rack barrel 20 for abutting, and the second limiting section 60 is with the
Compatible second arcwall face 61 of one arcwall face 211.It is contacted by the second arcwall face 61 with the first arcwall face 211, in limit
There is biggish contact area, good limit effect can be played.If the first arcwall face 211 is spherical surface, the second arcwall face 61
Accordingly it is set as spherical surface.
In the present embodiment, the second limiting section 60 includes: first end cover 62, bigger diameter end and the cylinder 11 of first end cover 62
End connection；Locating part 63, is arranged in the miner diameter end of first end cover 62, and the second arcwall face 61 is arranged on locating part 63 or first
On end cap 62, the second end of annular seal 50 is connect with locating part 63.Locating part 63 can be not only used for rack barrel 20 in this way
It is limited, it can also be with axial constraint or stationary annular sealing 50.Metal material can be used in locating part 63, also can be used
Wear-resisting nonmetallic materials.
Specifically, first end cover 62 includes along the ring-shaped article of cylinder 11 being arranged radially and being axially arranged along cylinder 11
Tubular element, ring-shaped article are connect with the end of cylinder 11, and tubular element is located at the extension 22 towards cydariform teeth portion 23 of ring-shaped article
Side, locating part 63 are connect with the inner wall of tubular element.By above-mentioned setting, convenient for the second limiting section 60 and annular seal 50
Arrangement, can be improved the compactedness of crown gear coupling.
In the present embodiment, groove can be set on locating part 63, and annular seal 50 includes skeleton 51 and and skeleton
The sealing element 52 of 51 connections, wherein a part of skeleton 51 is arranged in groove, and sealing element 52 is contacted with the first arcwall face 211.
Alternatively, in the present embodiment, annular seal 50 includes skeleton 51 and vulcanizes the sealing element being integrated with skeleton 51
52, and the miner diameter end for foring the bigger diameter end equipped with the support of skeleton 51 and supporting without skeleton 51, bigger diameter end constitute ring packing
The second end in portion 50 is interference fitted in the groove of the inner wall of 62 tubular element of first end cover, and miner diameter end constitutes annular seal 50
First end, with 211 sliding contact of the first arcwall face.
In the present embodiment, the side away from annular gap 24 of the extension 22 of rack barrel 20 is provided with the first spherical surface
221, position limiting structure further include: the first limiting section 30 is fixed in the cavity of cylinder 11 of sleeve 10, and the first limiting section 30 is located at
The side away from annular gap 24 of extension 22, the first limiting section 30 have third spherical surface 31, third spherical surface 31 and the first ball
Face 221 is adapted to limit the axial movement distance of rack barrel 20.Two mating spherical surfaces, Bu Huiying are used in limit in this way
Sound cydariform teeth portion 23 is engaged with interior teeth portion 12, is increased the contact area of stop zone, is reduced the stress in unit area,
And additional moment will not be generated, to avoid the high vibration when limiting extreme position, reduce the limiting section in sleeve 10
With the abrasion of rack barrel 20, the stability and service life of crown gear coupling at runtime are improved.It is possible to further
The centre of sphere of first spherical surface 221 is overlapped with the centre of sphere of the second spherical surface, crown gear coupling at runtime steady can be further increased
It is qualitative.
In the present embodiment, there is first step 111 on the inner peripheral surface of cylinder 11, the first limiting section 30 is tubular structure,
There is second step 32, second step 32 and the limit of first step 111 cooperate on the outer peripheral surface of first limiting section 30.Pass through second
The cooperation of step 32 and first step 111 can limit the first limiting section 30 in the axial direction of sleeve 10, to make first
Limiting section 30 can limit the axial direction of rack barrel 20.
In the present embodiment, third through-hole 25 can also be set on extension 22, and third through-hole 25 extends for being connected to
The cavity of 22 two sides of portion flows in this way convenient for gas.If the cavity of 22 two sides of extension is that difference is closed, extension 22 is being moved
When dynamic, intracorporal pressure can great changes will take place for chamber, this can bring the harm of galloping to crown gear coupling.Use third
After the cavity of 22 two sides of extension is connected through-hole 25, the intracorporal pressure of different cavity can be balanced, to avoid joining to barreled tooth flank
Axis device brings the risk of galloping.
In the present embodiment, crown gear coupling includes two sleeves, 10, two rack barrels 20 and two ring packings
Portion 50, two sleeves 10 are connected with each other, and two rack barrels 20 are arranged in a one-to-one correspondence with two sleeves 10, two annular seals
50 are arranged in a one-to-one correspondence with two sleeves 10.By above-mentioned setting, a crown gear coupling can be used and connect two axis classes
Component realizes torque transmitting, and can compensate for the relative displacement of two Axle Parts.
As shown in figure 5, in the embodiments of the present invention two, unlike the embodiments above, the second limiting section 60
It being abutted for the extension 22 with cydariform teeth portion 23, sleeve 10 further includes the second end cover 13 connecting with the end of cylinder 11, the
Two end caps 13 are arranged radially along cylinder 11, and second end cover 13 has the mesoporous for allowing body 21 to pass through, and second end cover 13 forms second
Limiting section 60.By above-mentioned setting, so that sleeve 10 has the function of being limited to cydariform teeth portion 23, cylinder 11 and the second limit
Position portion 60 is integrally formed molding structure, increases structural strength.
In the present embodiment, the second end of annular seal 50 is connect by fastener 44 with second end cover 13.So just
In the dismounting of annular seal 50 and second end cover 13.
In the present embodiment, annular seal 50 includes skeleton 51, sealing element 52 and supporting element 53, sealing element 52 and branch
Support member 53 is connect with the two sides of skeleton 51 respectively, wherein supporting element 53 is connect with second end cover 13, sealing element 52 and the first arc
Face 211 contacts.By above-mentioned setting, the intensity of annular seal 50 can be improved, improve service life.
In the present embodiment, the end face of the first limiting section 30 is abutted with the end face of interior teeth portion 12.Pass through the first limiting section 30
End face abutted with the end face of interior teeth portion 12, the first limiting section 30 can be limited.
Further, the first limiting section 30 is tubular structure, between the outer wall of the first limiting section 30 and the inner wall of cylinder 11
With sealing ring 41.The leakproofness of crown gear coupling can be improved by the way that sealing ring 41 is arranged, prevent in crown gear coupling
The lubricant medium in portion leaks out, and guarantees lubricant effect.The preferred lubricating grease of lubricant medium.
In the present embodiment, crown gear coupling further include: retainer ring 42, the inner wall of a part insertion cylinder 11 of retainer ring 42
In, another part of retainer ring 42 is abutted with the end face of the first limiting section 30.It in this way can be by retainer ring 42 to the first limiting section 30
Direction far from interior teeth portion 12 is limited, to prevent the first limiting section 30 mobile.
Further, the first limiting section 30 is tubular structure, and the first limiting section 30 has first through hole 33, first through hole 33
For equilibrium air pressure, lubricating grease flow channel can also be doubled as, for the lubrication of stop zone, reduces abrasion；First through hole 33
It can circumferentially be uniformly arranged, preferably be symmetrical arranged 2 or more.First through hole 33 can not certainly be set.
Further, as shown in figure 5, the first limiting section 30 is tubular structure, the first limiting section 30 successively includes close to interior
Stop collar, retainer ring and the central plate of teeth portion are equipped with sealing ring, one end of retainer ring and limit between stop collar and the cylinder inboard wall of sleeve
Position ring contact, the other end are contacted with the end face of central plate, also are provided with sealing ring between central plate and the cylinder inboard wall of sleeve.Retainer ring
Peripheral wall portions insertion sleeve cylinder inboard wall groove in, to play the role of to stop collar and central plate.Central plate
Equipped with the conical hole that internal diameter reduces, can play the role of stopping lubricant medium.
As shown in figure 5, having the second through-hole on cylinder 11, the second through-hole can be connected to first through hole 33, can also not
It is connected to first through hole 33, crown gear coupling further include: blocking 43, blocking 43 is for blocking the second through-hole.It in this way can be from outer
Lubricant medium is added to the inside of cylinder 11 in portion, is blocked after addition by blocking 43.Can not also be opened up on cylinder 11
Two through-holes, thus blocking 43 can not also be set, lubricating oil can also be added directly into the cavity of sleeve 10 in assembly, with profit
The sliding positions such as interior teeth portion and cydariform teeth portion.
In the present embodiment, there is oil guide groove 214 on the inner peripheral surface of the body 21 of rack barrel 20.It is packed into this way in dismounting
When motor shaft or other Axle Parts in body 21, can in oil guide groove 214 input pressure oil, to reduce friction.
In the present embodiment, crown gear coupling further include: bushing 70 is arranged on the inner peripheral surface of body 21, bushing 70
Outer peripheral surface and body 21 inner peripheral surface be interference fitted.For being packed into motor shaft or other Axle Parts in bushing 70.Axis class portion
The inner peripheral surface of part and bushing 70 is interference fitted, but magnitude of interference is lower than the interference of the outer peripheral surface of bushing 70 and the inner peripheral surface of body 21
Amount.In this way when Axle Parts overload, Axle Parts can slide axially with respect to bushing 70, with the damage of preventing portion part, play
The effect of overload protection.
As shown in fig. 6, in the embodiments of the present invention three, unlike embodiment two, second end cover 13 it is interior
It is arranged fluted on end face, the second end of annular seal 50 is interference fitted in the groove of second end cover 13.Matched by interference
The mode of conjunction can be improved the bonding strength of annular seal 50, while can also save space, easy to disassemble and maintenance.
In the present embodiment, annular seal 50 includes skeleton 51 and the sealing element 52 connecting with skeleton 51, wherein skeleton
51 connect with second end cover 13, and sealing element 52 is contacted with the first arcwall face 211.Specifically, annular seal 50 includes skeleton 51
Vulcanize the sealing element 52 being integrated with skeleton 51, and forms the bigger diameter end equipped with the support of skeleton 51 and supported without skeleton 51
Miner diameter end, bigger diameter end constitute annular seal 50 second end, be interference fitted in the groove of second end cover 13, miner diameter end structure
The first end for circularizing sealing 50, with 211 sliding contact of the first arcwall face.In the embodiment three, cydariform teeth portion 23 can be with
Limit is contacted with end cap, and situation and technique requirement can also be allowed according to space, it is a certain with the bigger diameter end of annular seal 50
Suitable end face contact limit.
In addition, in the embodiments of the present invention three, unlike embodiment two, during the first limiting section 30 is not provided with
Core only includes stop collar and retainer ring, is provided with and the first spherical surface 221 on rack barrel extension in the inner hole wall of stop collar
Compatible third spherical surface 31.
Fig. 7 is in the structural schematic diagram of obliquity for the crown gear coupling in Fig. 6, wherein with gearbox input shaft phase
The half a coupler on the right side of connection is in upward radial shift state, half shaft coupling in the left side being connected with motor side output shaft
The limiting section and the first sphere-contact on rack barrel extension of the sleeve of device, play position-limiting action, and avoid acutely
Impact.
The utility model achieves obviously technical advantage compared with prior art.On the one hand, due to the utility model
Using with arcwall face rack barrel and annular seal 50 be slidingly sealed cooperation, can farthest ensure difference
The minimal elastic of uniform contact sealing and sealing element when inflection point deforms, and science solves long-term existence in the prior art
Crown gear coupling poor sealing, the general character problem that sealing part abrasion is uneven and service life is short；Arcwall face is used simultaneously
Rack barrel and the optimization cooperation of second end cover and annular seal 50 can ensure the sealing reliability of crown gear coupling
And the long-life.Therefore, crown gear coupling sealed reliable provided by the utility model, can be effectively improved the sealing of lubricant medium
Effect improves the sealing performance of crown gear coupling；On the other hand, compact-sized have since the utility model additionally uses
The optimization designs such as the rack barrel of arcwall face and spherical limiting structure, can effectively eliminate crown gear coupling and generate in operation
Additional moment, enhancing shaft coupling balance and stability in the process of running, therefore, shaft coupling provided by the utility model
Stable drive is reliable, and displacement compensation capability is high, and overall structure is simple, compact, it is easier to realize that lightweight and miniaturization are set
Meter；
50 knot of rack barrel, second end cover 13 and annular seal with arcwall face used by the utility model simultaneously
Structure is simple, convenient for manufacture and replacement, therefore crown gear coupling provided by the utility model also have manufacture, assembling, disassembly and
Clear superiority at low cost is used in easy to maintain, maintenance.
Another embodiment of the utility model additionally provides a kind of gear train assembly, and gear train assembly includes above-mentioned mentions
The crown gear coupling of confession.Specifically, gear train assembly further includes uni-drive gear box, the input shaft and cydariform of uni-drive gear box
The inner peripheral surface of 21 inner hole of body of the rack barrel 20 of gear coupling is adopting conical surface interference cooperation.Using the technical side of the present embodiment
Interior teeth portion 12 is arranged in the cylinder 11 of the sleeve 10 of crown gear coupling, is arranged on the extension 22 of rack barrel 20 for case
Cydariform teeth portion 23 can be such that 20 relative sleeve 10 of rack barrel swings by the cooperation of cydariform teeth portion 23 and interior teeth portion 12 in this way
And axial movement, it is sealed by annular seal 50 and the cooperation of body 21.Due to rack barrel 20 body 21 it is outer
There is the first arcwall face 211, such rack barrel 20 is when relative sleeve 10 deflects, the week of annular seal 50 on circumferential surface
It uniformly contacts and is sealed to the first arcwall face 211 with body 21.On the one hand crown gear coupling can be guaranteed not in this way
There is preferable sealing effect with deviation post, on the other hand makes the abrasion of the different contacts site of annular seal 50 equal
It is even, so as to improve the reliability of gear train assembly.
To sum up, crown gear coupling provided by the utility model is compact-sized, sealed reliable, bearing capacity is strong, is displaced and mends
It repays that ability is big, transmission stability is high, the service life is long, easy to maintain, all kinds of transmission mechanisms can be suitable for, be particularly suitable for being used in connection
Axis transmission requires that it is running to be particularly suitable for the various road conditions of rail traffic in drive apparatus high, that operating condition is complicated and changeable
The rail vehicle gear train assembly of motor output shaft and gearbox high-speed Shaft misalignment.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (29)
1. a kind of crown gear coupling characterized by comprising
Sleeve (10), the sleeve (10) include the interior teeth portion of cylinder (11) and setting on the inner peripheral surface of the cylinder (11)
(12)；
At least part of rack barrel (20), the rack barrel (20) is arranged in the cavity of the sleeve (10), described
Rack barrel (20) includes body (21), extension (22) and cydariform teeth portion (23), and the extension (22) is from the body
(21) first end extends to the second end of the body (21), and tool is formed between the extension (22) and the body (21)
There is the annular gap (24) of opening, the cydariform teeth portion (23) is arranged on the outer peripheral surface of the extension (22), the cydariform
Teeth portion (23) is meshed with the interior teeth portion (12), and the rack barrel (20) can relatively described sleeve (10) the generation swing and axis
To movement, there is the first arcwall face (211) outwardly protruded on the outer peripheral surface of the body (21)；
Annular seal (50), the annular seal (50) is set on the outer peripheral surface of the body (21), and the annular
The first end of sealing (50) is contacted with first arcwall face (211), the second end of the annular seal (50) with it is described
Cylinder (11) direct or indirect connection.
2. crown gear coupling according to claim 1, which is characterized in that perpendicular to the axial direction of the cydariform teeth portion (23)
And by the plane at the midpoint of the width of the cydariform teeth portion (23) be center plane, the highest of first arcwall face (211)
Point is located on the central plane.
3. crown gear coupling according to claim 1, which is characterized in that first arcwall face (211) is spherical surface.
4. crown gear coupling according to claim 3, which is characterized in where the tooth top of the cydariform teeth portion (23)
Face is the second spherical surface, and the centre of sphere of first arcwall face (211) is overlapped with the centre of sphere of second spherical surface.
5. crown gear coupling according to claim 1, which is characterized in that the body (21) includes sequentially connected
A set of section (212) and second set of section (213), the extension (22) are circumferentially positioned on the first set section (212) and to institutes
It states second set of section (213) to extend, first arcwall face (211) is located on the outer peripheral surface of second set of section (213).
6. crown gear coupling according to claim 5, which is characterized in that the outer peripheral surface of second set of section (213) is
Spherical surface or the outer peripheral surface of second set of section (213) are made of spherical surface and cylindrical surface.
7. crown gear coupling according to claim 1, which is characterized in that the crown gear coupling further include:
Position limiting structure is connect with the cylinder (11), and the position limiting structure is used to limit the mobile model of the rack barrel (20)
It encloses, the second end of the annular seal (50) is arranged on the position limiting structure.
8. crown gear coupling according to claim 7, which is characterized in that the position limiting structure includes:
Second limiting section (60), second limiting section (60) connect with the end of the cylinder (11), second limiting section
(60) it is located at the side that the rack barrel (20) have the annular gap (24), second limiting section (60) is used for and institute
The extension (22) of the body (21) or the rack barrel (20) of stating rack barrel (20) abuts, the annular seal (50)
Second end be fixed on second limiting section (60).
9. crown gear coupling according to claim 8, which is characterized in that second limiting section (60) be used for it is described
The body (21) of rack barrel (20) abuts, and second limiting section (60) has to be adapted with first arcwall face (211)
The second arcwall face (61).
10. crown gear coupling according to claim 9, which is characterized in that second limiting section (60) includes:
The bigger diameter end of first end cover (62), the first end cover (62) is connect with the end of the cylinder (11)；
Locating part (63), is arranged the miner diameter end in the first end cover (62), and second arcwall face (61) is arranged in the limit
On position part (63), the second end of the annular seal (50) is connect with the locating part (63) or the first end cover (62).
11. crown gear coupling according to claim 10, which is characterized in that the first end cover (62) includes along described
The ring-shaped article of cylinder (11) being arranged radially and the tubular element being axially arranged along the cylinder (11), the ring-shaped article with it is described
The end of cylinder (11) connects, and the tubular element is located at the extension (22) towards the cydariform teeth portion (23) of the ring-shaped article
Side, the locating part (63) connect with the inner wall of the tubular element.
12. crown gear coupling according to claim 8, which is characterized in that second limiting section (60) is used for and institute
The extension (22) for stating cydariform teeth portion (23) abuts, and the sleeve (10) further includes the connect with the end of the cylinder (11)
Two end caps (13), the second end cover (13) are arranged radially along the cylinder (11), and the second end cover (13) is described with allowing
The mesoporous that body (21) passes through, the second end cover (13) form second limiting section (60).
13. crown gear coupling according to claim 12, which is characterized in that the second end of the annular seal (50)
It is connect by fastener (44) with the second end cover (13).
14. crown gear coupling according to claim 12, which is characterized in that on the inner face of the second end cover (13)
It is arranged fluted, the second end of the annular seal (50) is interference fitted in the groove of the second end cover (13).
15. crown gear coupling according to claim 12, which is characterized in that the annular seal (50) includes skeleton
(51), sealing element (52) and supporting element (53), the sealing element (52) and the supporting element (53) respectively with the skeleton
(51) two sides connection, wherein the supporting element (53) connect with the second end cover (13), the sealing element (52) with it is described
First arcwall face (211) contact.
16. crown gear coupling according to claim 8, which is characterized in that the extension of the rack barrel (20)
(22) the side away from the annular gap (24) is provided with the first spherical surface (221), the position limiting structure further include:
First limiting section (30) is fixed in the cavity of cylinder (11) of the sleeve (10), the first limiting section (30) position
In the side away from the annular gap (24) of the extension (22), first limiting section (30) has third spherical surface
(31), the third spherical surface (31) be adapted with first spherical surface (221) with limit the movement of the rack barrel (20) away from
From.
17. crown gear coupling according to claim 16, which is characterized in that have on the inner peripheral surface of the cylinder (11)
First step (111), first limiting section (30) are tubular structure, have the on the outer peripheral surface of first limiting section (30)
Two steps (32), the second step (32) and the first step (111) limit cooperate.
18. crown gear coupling according to claim 16, which is characterized in that the end face of first limiting section (30) with
The end face of the interior teeth portion (12) abuts.
19. crown gear coupling according to claim 16, which is characterized in that first limiting section (30) is tubular knot
Structure has sealing ring (41) between the outer wall of first limiting section (30) and the inner wall of the cylinder (11).
20. crown gear coupling according to claim 18, which is characterized in that the crown gear coupling further include:
Retainer ring (42), a part of the retainer ring (42) are embedded in the inner wall of the cylinder (11), the retainer ring (42) it is another
Part is abutted with the end face far from the interior teeth portion (12) of first limiting section (30).
21. crown gear coupling according to claim 16, which is characterized in that first limiting section (30) is tubular knot
Structure, first limiting section (30) have first through hole (33).
22. crown gear coupling according to claim 21, which is characterized in that have second to lead on the cylinder (11)
Hole, second through-hole are connected to the first through hole (33), the crown gear coupling further include:
It blocks (43), the blocking (43) is for blocking second through-hole.
23. crown gear coupling according to claim 1, which is characterized in that logical with third on the extension (22)
Hole (25), the third through-hole (25) are used to be connected to the cavity of the extension (22) two sides.
24. crown gear coupling according to claim 1, which is characterized in that the body (21) of the rack barrel (20)
Inner peripheral surface on have oil guide groove (214).
25. crown gear coupling according to claim 1, which is characterized in that the crown gear coupling further include:
Bushing (70) is arranged on the inner peripheral surface of the body (21), the outer peripheral surface of the bushing (70) and the body (21)
Inner peripheral surface interference fit.
26. crown gear coupling according to claim 1, which is characterized in that the crown gear coupling includes two institutes
Sleeve (10), two rack barrels (20) and two annular seals (50) are stated, two sleeves (10) are mutual
Connection, two rack barrels (20) are arranged in a one-to-one correspondence with two sleeves (10), two annular seals
(50) it is arranged in a one-to-one correspondence with two sleeves (10).
27. crown gear coupling according to claim 11, which is characterized in that the annular seal (50) includes skeleton
(51) and with the skeleton (51) vulcanize the sealing element (52) being integrated, the skeleton (51) is interference fitted in the first end cover
(62) in the groove of the inner wall of tubular element, the sealing element (52) and the first arcwall face (211) sliding contact.
28. crown gear coupling according to claim 14, which is characterized in that the annular seal (50) includes skeleton
(51) and with the skeleton (51) vulcanize the sealing element (52) being integrated, the skeleton (51) is interference fitted in the second end cover
(13) in groove, the sealing element (52) and the first arcwall face (211) sliding contact.
29. a kind of gear train assembly, which is characterized in that the gear train assembly includes any one of claim 1 to 28
The crown gear coupling, the gear train assembly further include uni-drive gear box, the input shaft of the uni-drive gear box with
The inner peripheral surface of the body (21) of the rack barrel (20) of the crown gear coupling is adopting conical surface interference cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244747.8U CN209586982U (en) | 2018-12-28 | 2018-12-28 | Crown gear coupling and gear train assembly with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244747.8U CN209586982U (en) | 2018-12-28 | 2018-12-28 | Crown gear coupling and gear train assembly with it |
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| Publication Number | Publication Date |
|---|---|
| CN209586982U true CN209586982U (en) | 2019-11-05 |
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ID=68351240
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822244747.8U Active CN209586982U (en) | 2018-12-28 | 2018-12-28 | Crown gear coupling and gear train assembly with it |
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| Country | Link |
|---|---|
| CN (1) | CN209586982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379793A (en) * | 2018-12-28 | 2020-07-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Crowned tooth coupling and gear transmission system with same |
-
2018
- 2018-12-28 CN CN201822244747.8U patent/CN209586982U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379793A (en) * | 2018-12-28 | 2020-07-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Crowned tooth coupling and gear transmission system with same |
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Address after: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Address before: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China |
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