CN207583956U - Harmonic speed reducer with overload protection function - Google Patents
Harmonic speed reducer with overload protection function Download PDFInfo
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- CN207583956U CN207583956U CN201721800096.5U CN201721800096U CN207583956U CN 207583956 U CN207583956 U CN 207583956U CN 201721800096 U CN201721800096 U CN 201721800096U CN 207583956 U CN207583956 U CN 207583956U
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- core
- connector sleeve
- connection core
- main body
- ontology
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Abstract
The utility model discloses a kind of harmonic speed reducers with overload protection function, and including compliant wheel, rigid wheel and wave producer, compliant wheel includes ontology and connection core and connector sleeve, and connection core is arranged to overcurrent protection structure with connector sleeve；Wave producer includes main body and buffering core, and buffering core, main body and buffering spring sheet are arranged to buffer structure.The harmonic speed reducer of the utility model by setting buffer structure and overcurrent protection structure respectively at the nozzle end of compliant wheel and cylinder bottom end, so as to effectively prevent impact and deformation failure of all standing of actuating unit and load to compliant wheel.
Description
Technical field
The utility model relates to technical field of mechanical transmission more particularly to a kind of harmonic speed reducer.
Background technology
Harmonic speed reducer with very large transmission ratio because being widely used in mechanical transmission fields, in general, harmonic speed reducer packet
Include rigid wheel, compliant wheel and wave producer.Wherein, rigid wheel is actually a very big ring gear of rigidity；Compliant wheel is in
Tubular, and be made of the smaller material of rigidity, external tooth is formed on the outer wall at the nozzle end of compliant wheel, the nozzle end of compliant wheel is stretched into
In rigid wheel, external tooth is for the interior tooth engagement with rigid wheel；Wave producer is elliptic cylindrical shape, stretches to the nozzle of compliant wheel
End, when wave producer is driven by actuating unit and rotated, the external tooth of compliant wheel corresponding with the long axis of wave producer passes through not
The disconnected interior tooth engagement with rigid wheel and make wave producer driving compliant wheel rotation, compliant wheel drive be connected to the load of a bottom end with
Load is made to perform certain goal task, e.g., drives hydraulic pump.
Well known, in mechanical transmission course, it usually needs in a certain link of transmission, overload protection arrangement, example are set
Such as, it in the transmission chain of motor-common speed reducer-hydraulic pump-hydraulic motor, is usually set between motor and common speed reducer
Overload protection arrangement either set overload protection arrangement when the hydraulic pump as load between hydraulic pump and common speed reducer or
During hydraulic motor all standing or during the motor all standing of start power, speed reducer is damaged to prevent torque from increasing suddenly, is overloaded
Protective device causes motor to be disconnected with the separated of speed reducer or load with speed reducer.
Applicant has found during harmonic speed reducer is used：
1st, it is also set between harmonic speed reducer and motor (the output shaft driving wave producer rotation of motor) of the prior art
Overload protection arrangement is equipped with, however, when the load all standing that the cylinder bottom end with compliant wheel is connect, overload protection arrangement causes harmonic wave
Retarder has hysteresis quality with the time point that motor disconnects, and excessive deformation easily occurs for compliant wheel, and this deformation is in cylinder bottom end
It embodies it is obvious that so as to easily damage compliant wheel.
2nd, when motor all standing, gross distortion can occur for the nozzle end of compliant wheel, and this deformation not only influences to be located at nozzle
The external tooth at end and the interior tooth engagement of rigid wheel, and excessive deformation is also easy to damage compliant wheel.
Utility model content
For the above-mentioned technical problems in the prior art, the embodiment of the utility model, which provides one kind, has overload
The harmonic speed reducer of defencive function.
In order to solve the above technical problems, the embodiment of the utility model the technical solution adopted is that：
A kind of retarder with overload protection function, including compliant wheel, rigid wheel and wave producer, the compliant wheel
Including ontology, the ontology is cylindrical in shape, and the ontology has nozzle end and cylinder bottom end, is set on the outer wall at the nozzle end useful
In the external tooth of the interior tooth engagement with rigid wheel, the compliant wheel further includes connection core and connector sleeve；The connection core is fixed on institute
A bottom end is stated, the connector sleeve is sheathed on the connection core and for the input axis connection with load；Wherein：
Threaded hole is offered on the end face of the one end of the connection core towards the load；
The peripheral surface offered on the connection core from the connection core extends radially through the guide groove of the threaded hole；
It is recessed that the hole wall of the endoporus of the connector sleeve and the axially opposite position of the guide groove offer multiple limiting cards, more
A recessed circumferential direction of the limiting card is evenly distributed with；
Spring is provided in the guide groove, the one end of the spring radially is provided with the decorative pearl on top of an official cap, and the spring is radially
One end inwardly is provided with push rod；
The screw hole has adjustment mother, the female one section of formation round table surface close to the ontology of the adjustment, the circle
Table top is abutted with the lower end of the push rod；
When the torque of the connector sleeve is less than predetermined torque, the decorative pearl on top of an official cap part to be embedded at the limiting card recessed；When
When the torque of the connector sleeve is more than or equal to the predetermined torque, the decorative pearl on top of an official cap is from the recessed middle abjection of the limiting card；
The wave producer includes main body and buffering core；The head of the main body is used to stretch into the nozzle end of the compliant wheel
It is interior to drive the external tooth and the interior tooth engagement to pass through to rotate；
The buffering core is coaxially opposite with the tail portion of the main body, the described buffering one end of core far from the main body for
Actuating unit connects, and buffering core one end opposite with the main body is provided with convex block, and the main body is opposite with the convex block
Position offer dashpot, the convex block axially stretches into the dashpot, in the dashpot of the both sides in the convex block circumferential direction
It is provided with buffering spring sheet.
Preferably, the female end face towards one end of the load of adjustment is offered for the polygon for spanner force
Hole.
Preferably, the cylinder bottom end offers through-hole；The described one end of connection core far from the load is formed with terminal pad,
The terminal pad attaches with the inside of the cylinder bottom end and passes through fastener and is fixedly connected with the cylinder bottom end；The connection core court
Described is protruded to one end of the load across the through-hole in vitro, and the connector sleeve is sheathed on the connection core and protrudes from
Described external part.
Preferably, external screw thread is formed on the connection core, is arranged on the connection core and carries out spiral shell with the external screw thread
The spacing ring of line connection, one end of the connector sleeve towards the ontology are fixed with backstop lid, and the spacing ring is limited in described
Between backstop lid and the connector sleeve.
Preferably, it is additionally provided with thrust bearing between the spacing ring and the backstop lid.
Compared with prior art, the advantageous effect of the harmonic speed reducer with overload protection function of the utility model is：
The harmonic speed reducer of the utility model by setting buffer structure and overload protection respectively at the nozzle end of compliant wheel and cylinder bottom end
Structure, so as to effectively prevent impact and deformation failure of all standing of actuating unit and load to compliant wheel.
Description of the drawings
Fig. 1 is the structural representation of the harmonic speed reducer with overload protection function that the embodiment of the utility model provides
Figure.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is the B-B direction sectional view of Fig. 1.
In figure：
10- ontologies；11- nozzles end；12- bottom ends；13- external tooths；20- connection cores；21- terminal pads；22- threaded holes；23-
External screw thread；30- connector sleeves；31- backstop lids；32- guide grooves；The 33- decorative pearls on top of an official cap；34- springs；35- push rods；36- spacing rings；37- is pushed away
Power bearing；40- adjustment is female；41- round table surfaces；42- polygonal holes；100- compliant wheels；200- is loaded；300- wave producers；310-
Main body；311- dashpots；320- buffers core；321- convex blocks；330- buffering spring sheets.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real for those skilled in the art is made to be better understood from the technical solution of the utility model
Mode is applied to elaborate to the utility model.
As depicted in figs. 1 and 2, the embodiment of the utility model provides a kind of harmonic reduction with overload protection function
Device, the harmonic speed reducer include compliant wheel 100, rigid wheel 400 and wave producer 300, and compliant wheel 100 includes ontology 10, connects
Connect core 20 and connector sleeve 30.Ontology 10 is cylindrical in shape, and ontology 10 has nozzle end 11 and cylinder bottom end 12, on the outer wall at nozzle end 11
It is provided with for the external tooth 13 of the interior tooth engagement with rigid wheel 400；Connection core 20 is fixed on a bottom end 12, and connector sleeve 30 is sheathed on
It connects on core 20 and for the input axis connection with load 200.Connection core 20 towards load 200 one end end face on offer
Threaded hole 22；The peripheral surface offered on connection core 20 from connection core 20 extends radially through the guide groove 32 of threaded hole 22；Connector sleeve
The hole wall of 30 endoporus offers that multiple limiting cards are recessed, and multiple recessed circumferential directions of limiting card are equal with 32 axially opposite position of guide groove
Cloth；It is provided with spring 34 in guide groove 32, the one end of spring 34 radially is provided with the decorative pearl on top of an official cap 33, and the one of 34 radial inward of spring
End is provided with push rod 35, and spring 34 is always in compressive state, to make the decorative pearl on top of an official cap 33 with certain force tight against in connector sleeve 30 always
Hole wall；Threaded hole 22 is bolted with adjustment mother 40, and adjustment mother 40 is close to one section of formation round table surface 41 of ontology 10, and round table surface 41 is with pushing away
The lower end of bar 35 abuts, by knob adjustment mother 40 to change the axial position of adjustment female 40, make round table surface 41 by with push rod
35 contact and change the radial position of push rod 35, so as to change the decrement of spring 34.Wave producer 300 includes 310 He of main body
Buffer core 320；The head of main body 310 be used to stretch into the nozzle end 11 of compliant wheel 100 with by rotation drive external tooth 13 with it is interior
Tooth engagement；It is coaxially opposite with the tail portion of main body 310 to buffer core 320, the one end of buffering core 320 far from main body is used for and actuating unit
Connection, buffering core 320 one end opposite with main body 310 are provided with convex block 321, and the position opposite with convex block 321 of main body 310 opens up
There is a dashpot 311, convex block 321 is axial to stretch into dashpot 311, is provided in the dashpot 311 of the both sides in 321 circumferential direction of convex block slow
Rush shrapnel 330.
It is understood according to above-mentioned：
On the one hand：
Spring 34 in compressive state make the decorative pearl on top of an official cap 33 with certain force be partially submerged into limiting card it is recessed in, when the torsion of connector sleeve 30
When square is less than predetermined torque, which is unlikely to the elastic force that the decorative pearl on top of an official cap 33 is made to overcome spring 34 and 33 part of the decorative pearl on top of an official cap is embedded at this time
Limiting card is recessed, at this point, connector sleeve 30 is rotated synchronously with connecting core 20；When the torque of connector sleeve 30 is more than or equal to predetermined torque,
Torque causes the decorative pearl on top of an official cap 33 to overcome the elastic force of spring 34 and compressed spring 34, and the decorative pearl on top of an official cap 33 is from the recessed middle abjection of limiting card, at this point, connection core
20 relatively rotate with connector sleeve 30, so as to play the role of overload protection.
It should be noted that：In design, the peak torque that should make ontology 10 can bear is more than predetermined torque, such as
This, when loading 200 normal operation, the torque of connector sleeve 30 is less than predetermined torque, at this point, ontology is rotated synchronously with load 200,
Ontology 10 provides power for load 200；When loading 200 all standing, the torque of connector sleeve 30 is turned round because 200 all standings of load are more than to preset
Square, which causes the decorative pearl on top of an official cap 33 to move radially inwardly with from the recessed middle abjection of limiting card, so that ontology 10 and 200 rotation of load
Separation, so as to make to make due to torque excessive caused by all standing passes to ontology 10 ontology 10 to damage when excessive by torque
It is bad.In addition, the axial position by adjusting adjustment mother 40 carrys out the decrement of adjustment spring 34, so as to adjust the big of predetermined torque
It is small.In this way, when ontology 10 can be because bearing high torque, increase the decrement of spring 34, the decorative pearl on top of an official cap 33 is not easy from limiting card
Recessed abjection so as to increase ontology 10 and the torque of 200 transmission of load, when ontology 10 cannot bear high torque, makes spring
34 decrement reduces, and the decorative pearl on top of an official cap 33 is easily from the recessed abjection of limiting card, so as to reduce ontology 10 and the torques of 200 transmission of load,
It improves overload and keeps function.
On the other hand：
Work as actuating unit, for example, motor, during all standing, due to being provided with buffering spring sheet 330, the buffering in dashpot 311
Shrapnel 300 is so that main body 310 will not be with buffering core 320 and actuating unit all standing, so as to reduce actuating unit all standing to soft
Property wheel 100 nozzle end 11 impact, effectively prevent nozzle end 11 because impact occur excessive deformation so that external tooth 13 and internal tooth
Engagement well.
The harmonic speed reducer of the utility model by setting buffering respectively at the nozzle end 11 of compliant wheel 100 and cylinder bottom end 12
Structure and overcurrent protection structure, so as to effectively prevent actuating unit and load 200 all standing to the impact of compliant wheel 100 with
And deformation failure.
In a preferred embodiment of the utility model, as shown in Figure 1, one end of 40 direction load 200 of adjustment mother
End face is offered for the polygonal hole 42 for spanner force, for example, interior hexagonal hole.In this way, tune can be screwed by die nut
Whole female 40 to adjust the decrement of spring 34.
In a preferred embodiment of the utility model, as shown in the figure, cylinder bottom end 12 offers through-hole；It is remote to connect core 20
One end from load 200 is formed with terminal pad 21, and terminal pad 21 and the inside of cylinder bottom end 12 attach and pass through fastener and cylinder bottom
End 12 is fixedly connected；One end of connection core 20 towards load 200 is protruded from across through-hole outside ontology 10,30 company of being sheathed on of connector sleeve
It connects core 20 and protrudes from the part outside ontology 10.External screw thread 23 is formed on connection core 20, is connected and is arranged on core 20 and external screw thread
23 spacing rings 36 being threadedly coupled, one end of connector sleeve 30 towards ontology 10 are fixed with backstop lid 31, and spacing ring 36 limits
Between backstop lid 31 and connector sleeve 30.Thrust bearing 37 is additionally provided between spacing ring 36 and backstop lid 31.In the present embodiment
In, on the one hand, connector sleeve 30 is limited by spacing ring 36 and connects the axial internal clearance between core 20 and ontology 10；It is another
Aspect, thrust bearing 37 can be in connector sleeves 30 with connecting the abrasion reduced when core 20 relatively rotates between the two；Connect core 20
It is fixedly connected by terminal pad 21 with 12 inside of cylinder bottom end, terminal pad 21 has cylinder bottom end 12 certain support, so as to reduce
The deformation of cylinder bottom end 12 improves the rigidity of a bottom end 12.
Above example is only the exemplary embodiment of the utility model, is not used in limitation the utility model, this practicality is new
The protection domain of type is defined by the claims.Those skilled in the art can be in the essence and protection domain of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling new in this practicality
In the protection domain of type.
Claims (5)
1. a kind of retarder with overload protection function, including compliant wheel, rigid wheel and wave producer, the compliant wheel packet
Ontology is included, the ontology is cylindrical in shape, and the ontology has nozzle end and cylinder bottom end, is provided with and is used on the outer wall at the nozzle end
With the external tooth of the interior tooth engagement of rigid wheel, which is characterized in that
The compliant wheel further includes connection core and connector sleeve；The connection core is fixed on the cylinder bottom end, and the connector sleeve is arranged
In on the connection core and for the input axis connection with load；Wherein：
Threaded hole is offered on the end face of the one end of the connection core towards the load；
The peripheral surface offered on the connection core from the connection core extends radially through the guide groove of the threaded hole；
It is recessed that the hole wall of the endoporus of the connector sleeve and the axially opposite position of the guide groove offer multiple limiting cards, Duo Gesuo
The recessed circumferential direction of limiting card is stated to be evenly distributed with；
Spring is provided in the guide groove, the one end of the spring radially is provided with the decorative pearl on top of an official cap, the spring radial inward
One end be provided with push rod；
The screw hole has adjustment mother, the female one section of formation round table surface close to the ontology of the adjustment, the round table surface
It is abutted with the lower end of the push rod；
When the torque of the connector sleeve is less than predetermined torque, the decorative pearl on top of an official cap part to be embedded at the limiting card recessed；When described
When the torque of connector sleeve is more than or equal to the predetermined torque, the decorative pearl on top of an official cap is from the recessed middle abjection of the limiting card；
The wave producer includes main body and buffering core；The head of the main body be used to stretch into the nozzle end of the compliant wheel with
The external tooth and the interior tooth engagement are driven by rotating；
The buffering core is coaxially opposite with the tail portion of the main body, and the described one end of buffering core far from the main body is used for and power
Mechanism connects, and buffering core one end opposite with the main body is provided with convex block, the main body position opposite with the convex block
It puts and offers dashpot, the convex block axially stretches into the dashpot, is set in the dashpot of the both sides in the convex block circumferential direction
There is buffering spring sheet.
2. the retarder according to claim 1 with overload protection function, which is characterized in that the adjustment is female towards institute
The end face for stating one end of load is offered for the polygonal hole for spanner force.
3. the retarder according to claim 1 with overload protection function, which is characterized in that the cylinder bottom end offers
Through-hole；The described one end of connection core far from the load is formed with terminal pad, and the terminal pad and the inside of the cylinder bottom end are pasted
It is attached and pass through fastener and be fixedly connected with the cylinder bottom end；The connection core passes through the through-hole convex towards one end of the load
External for described, the connector sleeve is sheathed on the connection core and protrudes from described external part.
4. the retarder according to claim 3 with overload protection function, which is characterized in that formed on the connection core
There is an external screw thread, be arranged with the spacing ring being threadedly coupled with the external screw thread on the connection core, the connector sleeve is towards institute
The one end for stating ontology is fixed with backstop lid, and the spacing ring is limited between the backstop lid and the connector sleeve.
5. the retarder according to claim 4 with overload protection function, which is characterized in that the spacing ring with it is described
Thrust bearing is additionally provided between backstop lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721800096.5U CN207583956U (en) | 2017-12-20 | 2017-12-20 | Harmonic speed reducer with overload protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721800096.5U CN207583956U (en) | 2017-12-20 | 2017-12-20 | Harmonic speed reducer with overload protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583956U true CN207583956U (en) | 2018-07-06 |
Family
ID=62739687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721800096.5U Expired - Fee Related CN207583956U (en) | 2017-12-20 | 2017-12-20 | Harmonic speed reducer with overload protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561529A (en) * | 2018-07-09 | 2018-09-21 | 东莞市国森科精密工业有限公司 | A kind of harmonic speed reducer that miniature combined input and output are coaxial |
| CN111193084A (en) * | 2020-01-07 | 2020-05-22 | 朱承风 | Filter cover plate |
-
2017
- 2017-12-20 CN CN201721800096.5U patent/CN207583956U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561529A (en) * | 2018-07-09 | 2018-09-21 | 东莞市国森科精密工业有限公司 | A kind of harmonic speed reducer that miniature combined input and output are coaxial |
| CN111193084A (en) * | 2020-01-07 | 2020-05-22 | 朱承风 | Filter cover plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20191220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |