CN215720615U - Right-angle planetary reducer - Google Patents
Right-angle planetary reducer Download PDFInfo
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- CN215720615U CN215720615U CN202122223781.9U CN202122223781U CN215720615U CN 215720615 U CN215720615 U CN 215720615U CN 202122223781 U CN202122223781 U CN 202122223781U CN 215720615 U CN215720615 U CN 215720615U
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- bevel gear
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- planetary reducer
- angular contact
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Abstract
The utility model discloses a right-angle planetary reducer which comprises an input bevel gear, an output bevel gear, an input double-row angular contact ball bearing, a right-angle shell, a wave washer and a pre-tightening end cover. The output bevel gear is meshed with the input bevel gear, and the axial direction of the output bevel gear is perpendicular to the axial direction of the input bevel gear; the input double-row angular contact ball bearing is arranged on the periphery of the input bevel gear; the wave washer is arranged between the input double-row angular contact ball bearing and the right-angle shell; the pre-tightening end cover is in threaded connection with the right-angle shell and is abutted against the input double-row angular contact ball bearing; the pre-tightening end cover is screwed, the input double-row angular contact ball bearing compresses the wave washer, and the meshing clearance between the input bevel gear and the output bevel gear is reduced; and loosening the pre-tightening end cover, reducing the wave-shaped gasket, and increasing the meshing clearance between the input bevel gear and the output bevel gear.
Description
Technical Field
The utility model relates to a right-angle planetary reducer, in particular to a right-angle planetary reducer with an adjustable bevel gear clearance.
Background
The planetary speed reducer is mostly arranged on a stepping motor or a servo motor, is used for reducing the rotating speed, improving the torque and matching the inertia, and is used in various industries such as hoisting transportation, engineering machinery, metallurgy, mines, petrochemical industry, construction machinery, light industry textile, medical machinery, instruments and meters, automobiles, ships, soldiers and aerospace and the like in modern machinery.
Generally, the input and output directions of the planetary reduction gear are coaxial, and the reduction gear with the structure has no advantages in axial length, particularly in the narrow space required by the axial dimension. However, the right-angle planetary reducer has the problem of meshing clearance between bevel gears.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of the meshing clearance of bevel gears of a right-angle planetary reducer.
To achieve one of the above objects, an embodiment of the present invention provides a right-angle planetary reduction gear.
The right-angle planetary reduction gear includes:
an input bevel gear;
the output bevel gear is meshed with the input bevel gear, and the axial direction of the output bevel gear is perpendicular to the axial direction of the input bevel gear;
the input double-row angular contact ball bearing is arranged on the periphery of the input bevel gear;
a right angle housing;
the wave washer is arranged between the input double-row angular contact ball bearing and the right-angle shell; and
the pre-tightening end cover is in threaded connection with the right-angle shell and is abutted against the input double-row angular contact ball bearing;
the pre-tightening end cover is screwed, the input double-row angular contact ball bearing compresses the wave washer, and the meshing clearance between the input bevel gear and the output bevel gear is reduced; and loosening the pre-tightening end cover, reducing the wave-shaped gasket, and increasing the meshing clearance between the input bevel gear and the output bevel gear.
As an optional technical scheme, the right-angle planetary reducer further includes an output shaft, a sun gear and a fixed shell, the output shaft is in threaded connection with the right-angle shell, the sun gear is meshed with the fixed shell, and the sun gear is in interference coupling with the output bevel gear.
As an optional technical scheme, the right-angle planetary reducer further comprises a bearing pre-tightening nut, and the bearing pre-tightening nut is in threaded fit with the output shaft so as to pre-tighten a bearing in the right-angle planetary reducer.
As an optional technical solution, the right-angle planetary reducer further includes an output double-row angular contact ball bearing, the output double-row angular contact ball bearing is mounted in an inner hole of a bearing sleeve of the output shaft in an interference fit manner, and the bearing sleeve of the output shaft is in threaded connection with the right-angle housing.
As an optional technical solution, the output shaft is provided with a planetary gear mounting groove, and the planetary gear mounting groove is a kidney-shaped groove.
As an optional technical scheme, the kidney-shaped groove is provided with a hole position with a step, one end of the roller pin is axially limited through the step, and the other end of the roller pin is limited through a double-layer spiral retainer ring.
As an optional technical solution, the right-angle planetary reducer further includes a connecting shaft and a needle bearing, one end of the connecting shaft is in interference fit with an inner hole of the input bevel gear, the other end of the connecting shaft is in interference fit with an inner hole of the needle bearing, and the needle bearing is in interference fit with an inner hole of the right-angle housing.
As an optional technical solution, the right-angle housing has a step, and the wave washer is disposed between the step and the input double-row angular contact ball bearing.
As an optional technical scheme, an inner hole of the pre-tightening end cover is provided with an oil seal.
As an optional technical scheme, the input bevel gear is provided with a cross-shaped kidney-shaped groove, and a clamping sleeve is arranged on the cross-shaped kidney-shaped groove.
Compared with the prior art, the right-angle planetary reducer is provided with the wave washer at the end part of the input bevel gear, the wave washer is deformed by applying force to the wave washer through screwing threads, so that the meshing clearance between the input bevel gear and the output bevel gear is adjusted, the function of adjusting the clearance is realized, and finally the meshing micro-clearance transmission and zero-clearance transmission of the bevel gears are realized.
Drawings
FIG. 1 is a schematic view of a right angle planetary reduction gear of the present invention;
FIG. 2 is a partially exploded schematic view of the right angle planetary reduction gear of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the right angle planetary reducer of FIG. 1 along the AA axis;
FIG. 4 is a schematic diagram of the input double-row angular contact ball bearing, the input bevel gear and the wave washer of FIG. 2;
FIG. 5 is a schematic cross-sectional view of FIG. 4 along axis BB;
FIG. 6 is a schematic illustration of the input bevel gear of FIG. 4;
FIG. 7 is a schematic view of the clamping sleeve of FIG. 4;
fig. 8 is a schematic view of the wave washer of fig. 4.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Fig. 1 is a schematic view of an embodiment of a right angle planetary reducer of the present invention, fig. 2 is a partially exploded schematic view of the right angle planetary reducer of fig. 1, and fig. 3 is a schematic cross-sectional view of the right angle planetary reducer of fig. 1 along an axis AA. Referring to fig. 1 to 3 together, the right-angle planetary reducer 100 includes an input bevel gear 1 (shown in fig. 6), an output bevel gear 2, an input double-row angular contact ball bearing 3, a right-angle housing 4, a wave washer 5 (shown in fig. 8), and a preload cap 6.
The output bevel gear 2 is meshed with the input bevel gear 1, and the axial direction of the output bevel gear is perpendicular to the axial direction of the input bevel gear 1. The input double-row angular contact ball bearing 3 is arranged on the excircle of the input bevel gear 1. The wave washer 5 is arranged between the input double-row angular contact ball bearing 3 and the right-angle housing 4. The pre-tightening end cover 6 is in threaded connection with the right-angle shell 4, and the pre-tightening end cover 6 is abutted to the input double-row angular contact ball bearing 3. Wherein, the pre-tightening end cover 6 is screwed, the double-row angular contact ball bearing 3 is input to compress the wave-shaped gasket 5, and the meshing clearance between the input bevel gear 1 and the output bevel gear 2 is reduced; and (3) loosening the pre-tightening end cover 6, restoring the wave-shaped washer 5, and increasing the meshing clearance between the input bevel gear 1 and the output bevel gear 2.
That is, the right-angle planetary reducer 100 mounts the wave washer 5 on the end of the input bevel gear 1, applies force to the wave washer 5 by screwing the thread, deforms the wave washer 5, further adjusts the meshing gap between the input bevel gear 1 and the output bevel gear 2, realizes the function of gap adjustment, and finally realizes the bevel gear meshing micro gap transmission and zero gap transmission.
As shown in fig. 3, the right-angle planetary reduction gear 100 further includes a bearing preload nut 7, an output shaft 8, a stationary housing 9, a sun gear 10, a needle roller 11, a planetary gear 12, a kidney groove 13, a double-layer spiral retainer ring 14, an elastic cylindrical pin 15, an output bearing bush 16, an output double-row angular contact ball bearing 17, a connecting shaft 18, a needle roller bearing 19, a clamping bush 20, an oil seal 21, a bearing 22, and a bearing 23.
As shown in fig. 4 and 5, one end of the connecting shaft 18 is interference-fitted to the inner bore of the input bevel gear 1, the other end of the connecting shaft 18 is interference-fitted to the inner bore of the needle bearing 19, and the needle bearing 19 is interference-fitted to the inner bore of the right-angle housing 4. The right-angle housing 4 has a step, and the wave washer 5 is disposed between the step and the input double-row angular contact ball bearing 3. Specifically, a connecting shaft 18 is arranged in an inner hole of the input bevel gear 1, one end of the connecting shaft 18 is in interference fit with the inner hole of the input bevel gear 1, the other end of the connecting shaft 18 is arranged in an inner hole of a needle roller bearing 19, and the needle roller bearing 19 is arranged in an inner hole of the right-angle shell 4 and is in interference fit; an input double-row angular contact ball bearing 3 is arranged on the excircle of the input bevel gear 1, and the connecting shaft 18, the needle roller bearing 19 and the input double-row angular contact ball bearing 3 jointly act to play a double-bearing role on the input bevel gear 1; the outer circle of the input double-row angular contact ball bearing 3 and the inner hole of the right-angle shell 4 are in micro clearance fit, and the end surface of the outer ring of the input double-row angular contact ball bearing 3 and the step of the right-angle shell 4 are provided with a wave washer 5.
The output shaft 8 is in threaded connection with the right-angle shell 9, the sun gear 10 is meshed with the fixed shell 9, and the sun gear 10 is in interference coupling with the output bevel gear 2. Specifically, the sun gear 10 is provided with external teeth and is in meshing transmission with the internal teeth of the fixed shell 9, the sun gear 10 and the output bevel gear 2 are in interference coupling, and an elastic cylindrical pin 15 penetrates through the coupling, so that the connection strength and reliability of the sun gear and the output bevel gear are improved. And the bearing pre-tightening nut 7 is in threaded fit with the output shaft 8 so as to pre-tighten the bearings 22 and 23 in the right-angle planetary reducer 100, eliminate the bearing play and realize the pre-tightening function.
An output double-row angular contact ball bearing 17 is arranged in an inner hole of a bearing sleeve 16 of the output shaft 8 in an interference coupling mode, and the bearing sleeve 16 of the output shaft 8 is in threaded connection with the right-angle shell 4. Namely, the outer circle of the output bevel gear 2 is provided with a double-row angular contact ball bearing 17, and the double-row angular contact ball bearing 17 is arranged in the inner hole of the output bearing sleeve 16 and is in interference connection. The left half part of the excircle of the output bearing sleeve 16 is provided with an external thread which is screwed with the output internal thread of the right-angle shell 4, so that the output bearing sleeve 16 is installed and positioned.
The output shaft 8 is provided with a planetary gear mounting groove which is a kidney-shaped groove 13. A hole position with steps for positioning and installing the roller pin 11 is arranged in the kidney-shaped groove 13, one end of the roller pin 11 is axially limited through the steps, the other end of the roller pin 11 is limited through the double-layer spiral retainer ring 14, the double-layer spiral retainer ring 14 has no notch, and the problem of axial movement of the roller pin 11 is effectively solved.
An oil seal 21 is arranged in an inner hole of the pre-tightening end cover 6. Namely, the pre-tightening end cover 6 is provided with an inner hole for installing the oil seal 21, an outer circle is provided with an external thread which is matched with the internal thread of the right-angle shell 4, and the end face is flatly attached to the end face of the outer ring of the double-row angular contact ball bearing 3.
The input bevel gear 1 is provided with a cross-shaped kidney-shaped groove, and a clamping sleeve 20 (shown in fig. 7) is arranged on the cross-shaped kidney-shaped groove, so that an external motor shaft can be clamped and coupled conveniently.
In summary, the right-angle planetary reducer of the present invention mounts the wave washer on the end of the input bevel gear, and applies force to the wave washer by screwing the threads to deform the wave washer, thereby adjusting the meshing gap between the input bevel gear and the output bevel gear, realizing the function of gap adjustment, and finally realizing the bevel gear mesh micro gap transmission and zero gap transmission.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A right-angle planetary reduction gear, characterized by comprising:
an input bevel gear;
the output bevel gear is meshed with the input bevel gear, and the axial direction of the output bevel gear is perpendicular to the axial direction of the input bevel gear;
the input double-row angular contact ball bearing is arranged on the periphery of the input bevel gear;
a right angle housing;
the wave washer is arranged between the input double-row angular contact ball bearing and the right-angle shell; and
the pre-tightening end cover is in threaded connection with the right-angle shell and is abutted against the input double-row angular contact ball bearing;
the pre-tightening end cover is screwed, the input double-row angular contact ball bearing compresses the wave washer, and the meshing clearance between the input bevel gear and the output bevel gear is reduced; and loosening the pre-tightening end cover, reducing the wave-shaped gasket, and increasing the meshing clearance between the input bevel gear and the output bevel gear.
2. The right-angle planetary reducer according to claim 1, further comprising an output shaft, a sun gear, and a stationary case, wherein the output shaft is threadedly coupled to the right-angle case, the sun gear is engaged with the stationary case, and the sun gear is interference-coupled to the output bevel gear.
3. The right-angle planetary reducer of claim 2, further comprising a bearing preload nut that is threadedly engaged with the output shaft to preload a bearing in the right-angle planetary reducer.
4. The right-angle planetary reducer according to claim 2, further comprising an output double-row angular contact ball bearing that is mounted in an inner hole of a bearing sleeve of the output shaft by interference coupling, the bearing sleeve of the output shaft being threadedly connected to the right-angle housing.
5. The right-angle planetary reducer according to claim 2, wherein the output shaft is provided with a planetary gear mounting groove which is a kidney groove.
6. The right-angle planetary reducer according to claim 5, wherein the kidney groove has a hole site with a step, one end of a needle roller is axially restrained by the step, and the other end of the needle roller is restrained by a double-layer spiral retainer ring.
7. The right-angle planetary reducer according to claim 1, further comprising a connecting shaft, one end of which is interference-fitted to the inner bore of the input bevel gear, and the other end of which is fitted to the inner bore of the needle bearing, the needle bearing being interference-fitted to the inner bore of the right-angle housing.
8. The right-angle planetary reducer according to claim 7, wherein the right-angle housing has a step, and the wave washer is disposed between the step and the input double-row angular contact ball bearing.
9. The right-angle planetary reducer according to claim 1, wherein an inner hole of the pretension end cover is provided with an oil seal.
10. The right-angle planetary reducer according to claim 1, wherein the input bevel gear is provided with a cross-shaped kidney groove, and a clamping sleeve is provided on the cross-shaped kidney groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122223781.9U CN215720615U (en) | 2021-09-14 | 2021-09-14 | Right-angle planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122223781.9U CN215720615U (en) | 2021-09-14 | 2021-09-14 | Right-angle planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215720615U true CN215720615U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122223781.9U Active CN215720615U (en) | 2021-09-14 | 2021-09-14 | Right-angle planetary reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215720615U (en) |
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2021
- 2021-09-14 CN CN202122223781.9U patent/CN215720615U/en active Active
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