CN218031273U - Multistage planetary reducer based on motor design - Google Patents
Multistage planetary reducer based on motor design Download PDFInfo
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- CN218031273U CN218031273U CN202222486059.9U CN202222486059U CN218031273U CN 218031273 U CN218031273 U CN 218031273U CN 202222486059 U CN202222486059 U CN 202222486059U CN 218031273 U CN218031273 U CN 218031273U
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Abstract
The utility model relates to a multi-stage planetary reducer based on motor design, which comprises a motor spindle of a power input mechanism, a cover plate, a planet carrier module, a bottom plate and an inner gear arranged on a convex table surface of the bottom plate; the motor main shaft is provided with a gear I, the gear I is fixed on a shaft body of the motor main shaft through a taper pin, an embedded steel ball is arranged on the outer end face of the gear I, and the cover plate is arranged at a groove on the upper end face of the internal gear; the planet carrier module including planet carrier subassembly I, planet carrier subassembly II, planet carrier subassembly I, planet carrier subassembly II between the gear II through gear III and planet carrier subassembly II between the meshing link to each other. When the number of the planet carrier assemblies of the first stage is changed from 0 to 2, the design of a planetary reducer from the first stage to the third stage can be realized, and the output of a large speed ratio can be realized. The motor can be used in cooperation with a stepping motor, and can meet the requirements of small size, light weight, low speed and large torque.
Description
Technical Field
The utility model relates to a mechanical transmission design field, concretely relates to multistage planetary reducer's design is by step motor and planetary reducer cooperation in industrial automation control.
Background
With the development and wide application of industrial automation control, the requirement on the output torque of the stepping motor at the execution end is higher and higher, and the basic characteristics are low speed and large torque. However, in the case of a stepping motor, the output characteristics of the motor are poor and the output torque is small in a low-speed state. Only after a certain speed is reached, the output characteristic of the motor is better.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the multi-stage planetary reducer based on the motor design of the utility model comprises a motor spindle of a power input mechanism, a cover plate, a planet carrier module, a bottom plate and an inner gear arranged on a convex table surface of the bottom plate; the motor main shaft is provided with a gear I, the gear I is fixed on a shaft body of the motor main shaft through a taper pin, an embedded steel ball is arranged on the outer end face of the gear I, and the cover plate is arranged at a groove on the upper end face of the internal gear; planet carrier module in including planet carrier subassembly I, planet carrier subassembly II, including the fixed column in planet carrier subassembly I, gear II, planet carrier I, gear III, planet carrier subassembly I, and planet carrier subassembly II includes the fixed column, gear II, planet carrier subassembly I, the meshing links to each other between II through the gear of gear III and planet carrier subassembly II between the planet carrier subassembly II, the one end of planet carrier I is located to gear III, and II one end of planet carrier are equipped with integrated into one piece's output shaft characteristic body, and the fixed column is cylindrical characteristic body, fixed column and planet carrier I, interference fit links to each other between the pilot hole of planet carrier II, the other end of fixed column links to each other through the assembly between axial retaining ring and the gear II simultaneously.
In an embodiment of the present invention, the motor spindle and the gear i are assembled on the planet carrier assembly member i after passing through the central hole of the cover plate, and the gear i is engaged with the three gears on the planet carrier assembly member i.
In an embodiment of the utility model, the bottom plate bottom surface still be equipped with concave mesa, and be equipped with the pilot hole of output shaft in the planet carrier II in the concave mesa of bottom plate, the contact surface between the retaining ring is used with the axle of concave mesa and output shaft simultaneously is equipped with the packing ring.
In an embodiment of the utility model, the packing ring be equipped with the slot form character body, wherein be equipped with the steel ball in the recess, eliminate the axial clearance of planet carrier II, ensure the assembly precision.
In an embodiment of the utility model, gear I, gear III all be equipped with the recess at the lower extreme of vertical direction, and be equipped with the embedding steel ball in the recess, steel ball radius wherein is the same with the recess degree of depth, through the point contact, reduce the moment of resistance, improve transmission efficiency.
The utility model discloses an in one embodiment, the fixed column assemble behind the pilot hole of planet carrier I, planet carrier II, its planet carrier I, II reverse sides of planet carrier carry out laser welding with fixed column cooperation seam.
In an embodiment of the present invention, the convex table surface of the bottom plate and the inner concave surface of the inner gear are in interference fit, and the two are connected by laser welding at the circumferential seam of the contact mating surface.
Compared with the prior art, the technical scheme of the utility model have following advantage: multistage planetary reducer, with motor and multistage planetary reducer unified design, realize accomplishing small, light in weight and big velocity ratio, can realize lasting operation to the job scene that needs big output torque. Meanwhile, the whole structure is simple and exquisite, the selection of parts, the connection mode and the whole working principle are reasonable and clear, and the application and the popularization in the field of industrial automation control are facilitated.
Drawings
In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings.
FIG. 1 is a sectional view of a multi-stage planetary reducer based on a motor design of the present invention;
FIG. 2 is a schematic structural view of the planet carrier assembly member I of the present invention;
fig. 3 is a schematic structural diagram of the planet carrier assembly ii of the present invention.
As shown in the figure, 1, a motor spindle; 2. a cover plate; 3. a gear I; 4. a planet carrier assembly member I; 5. an internal gear; 6. a planet carrier assembly II; 7. a base plate; 8. a steel ball; 9. a gasket; 10. fixing a column; 11. a gear II; 12. a planet carrier I; 13. a gear III; 14. and a planet carrier II.
Detailed Description
As shown in fig. 1, the present embodiment provides a multi-stage planetary reducer based on a motor design, which includes a motor spindle 1 of a power input mechanism, a cover plate 2, a planet carrier module, a bottom plate 7 and an internal gear 5 mounted on a convex table surface of the bottom plate 7; the motor main shaft 1 is provided with a gear I3, the gear I3 is fixed on a shaft body of the motor main shaft 1 through a taper pin, an embedded steel ball 8 is arranged on the outer end face of the gear I3, and the cover plate 2 is arranged at a groove on the upper end face of the internal gear 5;
as shown in fig. 2 and 3, the planet carrier module comprises a planet carrier assembly member i 4 and a planet carrier assembly member ii 6, the planet carrier assembly member i 4 comprises a fixed column 10, a gear ii 11, a planet carrier i 12 and a gear iii 13, the planet carrier assembly member i 4, the planet carrier assembly member ii 6 comprises a fixed column 10, a gear ii 11 and a planet carrier ii 14, and the planet carrier assembly member i 4 and the planet carrier assembly member ii 6 are connected through the gearⅡ13 and the meshing between II 11 of planet carrier subassembly II 6 links to each other, and the one end of planet carrier I12 is located to gear III 13, and II 14 one end of planet carrier is equipped with integrated into one piece's output shaft characteristic body, and fixed column 10 is cylindrical characteristic body, and interference fit links to each other between the pilot hole of fixed column 10 and planet carrier I12, planet carrier II 14, and the other end of fixed column 10 links to each other through the assembly between shaft retaining ring and gear II 11.
The motor spindle 1 and the gear I3 penetrate through a center hole of the cover plate 2 and then are assembled on the planet carrier assembly I4, and meanwhile, the gear I3 is meshed with three gears arranged on the planet carrier assembly I4.
The bottom surface of the bottom plate 7 is also provided with a concave table surface, an assembly hole of an output shaft in the planet carrier II 14 is formed in the concave table surface of the bottom plate 7, and meanwhile a gasket 9 is arranged on a contact surface between the concave table surface and a shaft retainer ring of the output shaft.
The gasket 9 is provided with a groove-shaped characteristic body, wherein a steel ball 8 is arranged in the groove, so that the axial clearance of the planet carrier II 14 is eliminated, and the assembly precision is guaranteed.
Gear I3, gear III 13 all be equipped with the recess at the lower extreme of vertical direction, and be equipped with embedding steel ball 8 in the recess, 8 radiuses of steel ball wherein are the same with the recess degree of depth, through the point contact, reduce the moment of resistance, improve transmission efficiency.
Specifically, as shown in fig. 1, the convex table surface of the bottom plate 7 and the concave surface of the internal gear 5 are in interference fit, and are connected by laser welding at the circumferential seam of the contact fit surface between the convex table surface and the concave surface, and the steel ball 8 is filled with grease and is coated in the groove of the bottom plate 7 after cleaning.
As shown in fig. 2 and 3, after the fixing column 10 is assembled in the assembly holes of the planet carrier i 12 and the planet carrier ii 14, the matching seams between the reverse surfaces of the planet carrier i 12 and the planet carrier ii 14 and the fixing column 10 are subjected to laser welding.
And as shown in fig. 2, lubricating grease is coated on the long cylindrical surface of the fixed column 10, the gear II 11 is installed, and the gear II 11 is axially limited by a corresponding shaft retainer ring, so that the assembly of the planet carrier assembly II 6 is completed. Then, as shown in fig. 1, after the gear surface is coated with grease, the planet carrier assembly II 6 is arranged in an assembly body formed by combining the internal gear 5 and the bottom plate 7, the groove of the gasket 9 is coated with grease and is filled with steel balls 8, the assembly body is assembled on a planet carrier II 14 of the planet carrier assembly II 6 as shown in fig. 1, and axial fixing is carried out after the axial clearance of the planet carrier II is eliminated by using a shaft retainer ring (the axial clearance can be eliminated by using an adjusting gasket at the lower part of the gasket 9).
As shown in fig. 2, the short cylinders (3 pieces in total) of the fixing column 10 are pressed into the corresponding fitting holes of the planet carrier i 12 (interference fit), the small cylinders of the gear iii 13 are pressed into the central holes of the planet carrier i 12 (note that the small cylinders are opposite), and the fitting seams on the reverse side are laser welded (reinforced) with proper power. And then, lubricating grease is coated on the long column surface of the fixed column 10, the gear II 11 is loaded, the gear II 11 is axially limited by using a corresponding shaft retainer ring, a steel ball 8 is pressed into the end part of the gear III 13, the steel ball is exposed out of the radius height, and the assembly of the planet carrier assembly I4 is completed. After the gear surfaces have been greased, the completed planet carrier assembly member i 4 is loaded into the preceding assembly as shown in figure 1.
According to the scheme shown in the figure 1, a gear I3 is arranged on a motor spindle 1 and fixed through a taper pin, a steel ball 8 is embedded into the outer end face of the gear I3, the steel ball is exposed to the radius height, the tooth surface of the gear I3 is coated with lubricating grease, penetrates through a center hole of a cover plate 2 and is assembled on a planet carrier assembly I4 and is meshed with three gears II 11, then the cover plate 2 is assembled in place, and the assembling process is finished.
In the motion process of the multi-stage planetary reducer in the embodiment, the internal gear 5 is fixed, and the input shaft is the motor spindle 1. When the gear I3 rotates along with the synchronous rotation of the motor spindle 1, the first-stage planet carrier assembly member I4 rotates; meanwhile, a gear III 13 in the planet carrier assembly I4 drives the planet carrier assembly II 6 to rotate, and the output shaft is a planet carrier II 14, so that speed reduction output is realized.
If the inner gear 5 is added with proper height, a planet carrier assembly member I4 can be added and assembled, so that three-stage planetary reduction can be realized, and the reduction ratio can be further increased.
Wherein the reduction ratio is calculated
The number of teeth of the internal gear 5 is Z, and the number of teeth of the gear I3 is Z 1 The rotation speed of the motor spindle 1 is omega 1 The speed of the planet carrier component II 6 is omega 2 And when the number of the planet carrier assemblies II 6 is 0-2, the planet carrier assemblies are respectively a first-stage planetary reducer to a third-stage planetary reducer.
If the speed is reduced by a first-stage planet, the reduction ratio is as follows:
ω 1 /ω 2 = (1+Z inner/Z 1 )
When Z is in =45, Z 1 When =15, ω 1 /ω 2 ＝4
If the speed is reduced by the two-stage planet, the reduction ratio is as follows:
ω 1 /ω 2 = (1+Z inner/Z 1 ) (1+Z in/Z) 1 )
When Z is in =45, Z 1 When =15, ω 1 /ω 2 ＝16
If the speed is reduced by three stages of planets, the reduction ratio is as follows:
ω 1 /ω 2 = (1+Z inner/Z 1 ) (1+Z in/Z) 1 ) (1+Z in/Z) 1 )
When Z is in =45, Z 1 When =15, ω 1 /ω 2 ＝64
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.
Claims (7)
1. A multi-stage planetary reducer based on a motor design is characterized by comprising a motor spindle (1) of a power input mechanism, a cover plate (2), a planet carrier module, a bottom plate (7) and an inner gear (5) arranged on a convex table surface of the bottom plate (7); a gear I (3) is arranged on the motor main shaft (1), the gear I (3) is fixed on a shaft body of the motor main shaft (1) through a taper pin, an embedded steel ball (8) is arranged on the outer end face of the gear I (3), and the cover plate (2) is arranged at a groove on the upper end face of the internal gear (5); planet carrier module in including planet carrier subassembly I (4), planet carrier subassembly II (6), including fixed column (10), gear II (11), planet carrier I (12), gear III (13) in planet carrier subassembly I (4), and planet carrier subassembly II (6) are including fixed column (10), gear II (11), planet carrier II (14), planet carrier subassembly I (4), the meshing links to each other between planet carrier subassembly II (6) through gear II (11) of gear III (13) and planet carrier subassembly II (6), the one end of planet carrier I (12) is located in gear III (13), and planet carrier II (14) one end is equipped with integrated into one piece's output shaft characteristic body, and fixed column (10) are cylindrical characteristic body, fixed column (10) and planet carrier I (12), interference fit links to each other between the pilot hole of planet carrier II (14), the other end of fixed column (10) links to each other through the assembly between the retaining ring for the axle and gear II (11) simultaneously.
2. The multi-stage planetary reducer of claim 1, wherein: motor spindle (1) and gear I (3) pass on the centre bore assembly planet carrier subassembly I (4) of apron (2) after, gear I (3) link to each other with the three gear engagement that is equipped with on the planet carrier subassembly I (4) simultaneously.
3. The multi-stage planetary reducer of claim 1, wherein: the bottom surface of the bottom plate (7) is also provided with a concave table surface, an assembly hole of an output shaft in the planet carrier II (14) is formed in the concave table surface of the bottom plate (7), and meanwhile a gasket (9) is arranged on a contact surface between the concave table surface and a shaft retainer ring of the output shaft.
4. The multi-stage planetary reducer of claim 3, wherein: the gasket (9) is provided with a groove-shaped characteristic body, wherein a steel ball (8) is arranged in the groove.
5. The multi-stage planetary reducer of claim 1, wherein: the lower extreme of gear I (3), gear III (13) in the vertical direction all be equipped with the recess, and be equipped with embedding steel ball (8) in the recess, steel ball (8) radius and recess degree of depth wherein are the same.
6. The multi-stage planetary reducer of claim 1, wherein: fixed column (10) assemble behind the pilot hole of planet carrier I (12), planet carrier II (14), its planet carrier I (12), the reverse side of planet carrier II (14) and fixed column (10) cooperation seam carry out laser welding.
7. The multi-stage planetary reducer of claim 1, wherein: the convex table surface of the bottom plate (7) and the inner concave surface of the inner gear (5) are in interference fit, and the circumferential seam of the contact matching surface between the convex table surface and the inner concave surface is connected by laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222486059.9U CN218031273U (en) | 2022-09-20 | 2022-09-20 | Multistage planetary reducer based on motor design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222486059.9U CN218031273U (en) | 2022-09-20 | 2022-09-20 | Multistage planetary reducer based on motor design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218031273U true CN218031273U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222486059.9U Active CN218031273U (en) | 2022-09-20 | 2022-09-20 | Multistage planetary reducer based on motor design |
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| Country | Link |
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| CN (1) | CN218031273U (en) |
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- 2022-09-20 CN CN202222486059.9U patent/CN218031273U/en active Active
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