CN220706325U - Two-stage radial series harmonic speed reducer with large reduction ratio - Google Patents
Two-stage radial series harmonic speed reducer with large reduction ratio Download PDFInfo
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- CN220706325U CN220706325U CN202322463894.5U CN202322463894U CN220706325U CN 220706325 U CN220706325 U CN 220706325U CN 202322463894 U CN202322463894 U CN 202322463894U CN 220706325 U CN220706325 U CN 220706325U
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 46
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The utility model discloses a large-reduction-ratio two-stage radial serial harmonic reducer which comprises a first wave generator, a cup-shaped flexible wheel, a first cross bearing, a first rigid wheel, a third wave generator, a top hat-shaped flexible wheel, a second cross bearing and a second rigid wheel, wherein one end of the cup-shaped flexible wheel is meshed with the first rigid wheel and is arranged outside the first wave generator, the first rigid wheel is connected with an outer ring of the first cross bearing, one end of the top hat-shaped flexible wheel is meshed with the second rigid wheel and is arranged outside the third wave generator, the second rigid wheel is connected with an inner ring of the second cross bearing, the other end of the top hat-shaped flexible wheel is connected with an outer ring of the second cross bearing, corresponding ends of the first cross bearing and the cup-shaped flexible wheel are arranged in a containing sinking groove of the third wave generator, and the inner ring of the first cross bearing is simultaneously connected with the other end of the cup-shaped flexible wheel and the third wave generator. The utility model realizes the two-stage radial series connection function of the two harmonic reducers, obviously increases the reduction ratio and has little increase in axial dimension.
Description
Technical Field
The utility model relates to a harmonic reducer, in particular to a two-stage radial series harmonic reducer with a large reduction ratio.
Background
The harmonic reducer is also called a harmonic drive reducer, and mainly consists of four basic components, namely a mountain wave generator, a flexible gear (namely a flexible gear), a cross bearing (also called a cross bearing) and a rigid gear (namely a rigid gear), and is a gear drive machine for transmitting motion and power by means of the flexible gear and the rigid gear which are mutually meshed on the wave generator, wherein one end of the flexible gear is generally used as a power output end. The harmonic speed reducer has the characteristic of high speed reduction ratio, so that the application is more and more widely.
The flexible gear of the harmonic speed reducer can be divided into a cup-shaped flexible gear and a top hat-shaped flexible gear according to the shape of the flexible gear, the corresponding two types of harmonic speed reducers are generally called RCSG series harmonic speed reducers and RHSG series harmonic speed reducers, the structure of the two types of harmonic speed reducers is shown in figure 1, the flexible gear comprises a first wave generator 4, a cup-shaped flexible gear 2, a first cross bearing 1 and a first rigid gear 3, one end of the cup-shaped flexible gear 2 and the first rigid gear 3 are meshed with each other and are arranged outside the first wave generator 4, the first rigid gear 3 is connected with the outer ring of the first cross bearing 1 through a screw, and the other end of the cup-shaped flexible gear 2 is connected with the inner ring of the first cross bearing 1 through the screw and is used as a rotary power output end; the latter structure is as shown in fig. 2, including second wave generator 8, top hat shape flexbile gear 6, second cross bearing 5 and second rigid gear 7, the one end of top hat shape flexbile gear 6 and second rigid gear 7 intermesh and install outside second wave generator 8, second rigid gear 7 passes through the screw and is connected with the inner circle of second cross bearing 5, the other end of top hat shape flexbile gear 6 passes through the screw and is connected and regard as the rotational power output end with the outer lane of second cross bearing 5.
The traditional harmonic speed reducer is generally one type of RCSG series harmonic speed reducer and RHSG series harmonic speed reducer, the maximum speed reduction ratio is 160, and the cutter production difficulty is high, the cost is high and the service life is short in order to further improve the speed reduction ratio, so that the method is difficult to realize.
For the above reasons, the conventional single type harmonic reducer cannot meet the application requirement of a larger reduction ratio (higher than 160). In order to solve the problem, the patent number ZL201721830245.2 and the patent entitled "speed and speed output reduction mechanism and speed reducer" disclose a structure in which two harmonic speed reducers are connected in series, but the harmonic speed reducers are connected in series in an axial direction, so that the axial length can be obviously increased, and the harmonic speed reducers cannot be used in application scenes with smaller requirements on the axial dimension.
Disclosure of Invention
The utility model aims to solve the problems and provide a two-stage radial series harmonic reducer with small axial size and large reduction ratio.
The utility model realizes the above purpose through the following technical scheme:
the utility model provides a second grade radial series harmonic reducer of big speed reduction ratio, includes first ripples generator, cup-shaped flexspline, first cross bearing and first rigid gear, the one end of cup-shaped flexspline with first rigid gear intermeshes and installs outside the first ripples generator, first rigid gear with the outer lane of first cross bearing is connected, the other end of cup-shaped flexspline with the inner circle of first cross bearing is connected, the second grade radial series harmonic reducer of big speed reduction ratio still includes third ripples generator, top hat shape flexspline, second cross bearing and second rigid gear, the one end of top hat shape flexspline with the second rigid gear intermeshes and installs outside the third ripples generator, the second rigid gear with the inner circle of second cross bearing is connected, the other end of top hat shape flexspline with the outer lane of second cross bearing is connected and is regarded as the rotatory power transmission mountain end of the second grade radial harmonic reducer of big speed reduction ratio, the third ripples generator is equipped with the heavy groove that holds, first cross bearing and second cross bearing are arranged in the corresponding to the first ripples generator is connected in the second cross bearing.
Preferably, in order to facilitate installation and connection with other components, the first rigid wheel and the second rigid wheel are connected through a fixed flange; and an output flange plate is connected with the outer ring of the second cross bearing.
Preferably, in order to reduce noise and reduce cost, the first rigid wheel and the second rigid wheel are ductile cast iron rigid wheels, and the first cross bearing and the second cross bearing are ductile cast iron bearings.
The utility model has the beneficial effects that:
according to the utility model, the RCSG series harmonic reducer and the RHSG series harmonic reducer are integrated together, and the wave generator of the RHSG series harmonic reducer is improved, so that the RHSG series harmonic reducer can accommodate the corresponding ends of the cross bearing and the cup-shaped flexible wheel of the RCSG series harmonic reducer and is convenient to connect with the cross bearing, the output end of the RCSG series harmonic reducer is used as the input end of the RHSG series harmonic reducer, the two-stage radial series function of the two harmonic reducers is realized, the reduction ratio is obviously increased compared with the one harmonic reducer, the axial size is not increased much, and the RHSG series harmonic reducer can be used in application scenes with smaller axial size requirements.
Drawings
FIG. 1 is a schematic cross-sectional structural view of an RCSG series harmonic reducer, with a cross-sectional view not shown;
FIG. 2 is a schematic cross-sectional structural view of a RHSG series harmonic reducer, not shown in cross-section;
FIG. 3 is a schematic cross-sectional view of a high reduction ratio two-stage radial series harmonic reducer of the present utility model, not shown.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 3, the large-reduction-ratio two-stage radial serial harmonic reducer of the utility model comprises a first wave generator 4, a cup-shaped flexspline 2, a first cross bearing 1, a first rigid gear 3, a third wave generator 10, a top hat-shaped flexspline 6, a second cross bearing 5 and a second rigid gear 7, wherein one end of the cup-shaped flexspline 2 is meshed with the first rigid gear 3 and is arranged outside the first wave generator 4, the first rigid gear 3 is connected with the outer ring of the first cross bearing 1, the other end of the cup-shaped flexspline 2 is connected with the inner ring of the first cross bearing 1, one end of the top hat-shaped flexspline 6 is meshed with the second rigid gear 7 and is arranged outside the third wave generator 10, the second rigid gear 7 is connected with the inner ring of the second cross bearing 5, the other end of the top hat-shaped flexspline 6 is connected with the outer ring of the second cross bearing 5 through a screw and is used as a rotating power output end of the large-reduction-ratio two-stage radial serial harmonic reducer, the third wave generator 10 is provided with a sink mark (in the figure), and the first cross bearing 1 and the second cross bearing 1 are correspondingly connected with the first cross bearing 1 and the third cross bearing 10 through the sink groove.
Preferably, in order to facilitate installation and connection with other components, the first rigid wheel 3 and the second rigid wheel 7 are connected through a fixed flange 11, and an output flange 9 is connected with the outer ring of the second cross bearing 5; in order to reduce noise and reduce cost, the first rigid wheel 3 and the second rigid wheel 7 are ductile cast iron rigid wheels, and the first cross bearing 1 and the second cross bearing 5 are ductile cast iron bearings.
As shown in fig. 3, in application, the fixed flange 11 is mounted on a frame (not shown), the output flange 9 is connected with a power device (not shown), and the rotating shaft of a driving motor (not shown) is connected with the first wave generator 4; after the driving motor is powered on, the rotating shaft drives the first wave generator 4 to rotate, and as the first rigid wheel 3 is fixed, the corresponding ends of the inner ring of the first cross bearing 1 and the cup-shaped flexible wheel 2 are taken as rotating power output ends after speed reduction, so that first-stage speed reduction is realized; the inner ring of the first cross bearing 1 drives the third wave generator 10 to rotate, and as the second rigid wheel 7 is fixed, the outer ring of the second cross bearing 5 and the corresponding end of the top hat-shaped flexible wheel 6 are used as rotating power output ends after speed reduction, so that the second-stage speed reduction is realized, the speed reduction function with a large speed reduction ratio is finally realized, and the power equipment is driven to operate at an extremely low rotating speed.
Description: the first wave generator 4, the cup-shaped flexible wheel 2, the first cross bearing 1, the first rigid wheel 3, the top hat-shaped flexible wheel 6, the second cross bearing 5 and the second rigid wheel 7 are respectively in one-to-one correspondence with the first wave generator 4, the cup-shaped flexible wheel 2, the first cross bearing 1, the first rigid wheel 3, the top hat-shaped flexible wheel 6, the second cross bearing 5 and the second rigid wheel 7 in the background art, and have the same structure or only need to adaptively change the connection mode and the size, so the same part name and the same reference number are adopted; the third wave generator 10 corresponds to the second wave generator 8 in the background art, but different part names and reference numerals are used because the structure is changed to meet different functional needs.
The above embodiments are only preferred embodiments of the present utility model, and are not limiting to the technical solutions of the present utility model, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present utility model.
Claims (3)
1. The utility model provides a two-stage radial series harmonic reducer of big speed reduction ratio, includes first ripples generator, cup-shaped flexbile gear, first cross bearing and first rigid gear, the one end of cup-shaped flexbile gear with first rigid gear intermeshes and installs outside the first ripples generator, first rigid gear with the outer lane of first cross bearing is connected, the other end of cup-shaped flexbile gear with the inner lane of first cross bearing is connected, its characterized in that: the secondary radial serial harmonic speed reducer of big speed reduction ratio still includes third wave generator, the flexible wheel of top-hat shape, second cross bearing and second rigid gear, the one end of the flexible wheel of top-hat shape with the second rigid gear intermeshes and installs outside the third wave generator, the second rigid gear with the inner circle of second cross bearing is connected, the other end of the flexible wheel of top-hat shape with the outer lane of second cross bearing is connected and is regarded as the rotatory power output of the secondary radial serial harmonic speed reducer of big speed reduction ratio, third wave generator is equipped with and holds heavy groove, first cross bearing with the corresponding end of cup-shaped flexible gear is arranged in hold heavy inslot, the inner circle of first cross bearing with third wave generator is connected.
2. The high reduction ratio two-stage radial series harmonic reducer of claim 1, wherein: the first rigid wheel and the second rigid wheel are connected through a fixed flange plate; and an output flange plate is connected with the outer ring of the second cross bearing.
3. The large reduction ratio two-stage radial series harmonic reducer according to claim 1 or 2, characterized in that: the first rigid wheel and the second rigid wheel are ductile cast iron rigid wheels, and the first cross bearing and the second cross bearing are ductile cast iron bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322463894.5U CN220706325U (en) | 2023-09-11 | 2023-09-11 | Two-stage radial series harmonic speed reducer with large reduction ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322463894.5U CN220706325U (en) | 2023-09-11 | 2023-09-11 | Two-stage radial series harmonic speed reducer with large reduction ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706325U true CN220706325U (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322463894.5U Active CN220706325U (en) | 2023-09-11 | 2023-09-11 | Two-stage radial series harmonic speed reducer with large reduction ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706325U (en) |
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2023
- 2023-09-11 CN CN202322463894.5U patent/CN220706325U/en active Active
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