CN215763178U - Hollow penetrating planetary reducer - Google Patents
Hollow penetrating planetary reducer Download PDFInfo
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- CN215763178U CN215763178U CN202122213041.7U CN202122213041U CN215763178U CN 215763178 U CN215763178 U CN 215763178U CN 202122213041 U CN202122213041 U CN 202122213041U CN 215763178 U CN215763178 U CN 215763178U
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Abstract
The utility model discloses a hollow penetrating planetary reducer, which relates to the technical field of reducers and comprises a shell, wherein an inner gear ring is arranged on the inner wall of the shell; an input stage hollow planet carrier, an intermediate stage hollow planet carrier and an output stage hollow planet carrier are sequentially arranged in the shell from the input end to the output end; the input-stage hollow planet carrier is rotationally connected with the shell through a first bearing; the inner key of the input stage hollow planet carrier is connected with an intermediate stage sun gear; the middle-stage planet wheel is meshed with an inner gear ring of the shell, and the middle-stage planet wheel is meshed with the middle-stage sun wheel; an output-stage sun gear is connected with the inner key of the output end in the middle-stage hollow planet carrier; the output-stage hollow planet carrier is rotationally connected with the shell through a fourth bearing; the output stage planet wheel is meshed with the output stage sun wheel. The speed reducer is in a hollow state, and the circuit and the gas circuit at the output end can be placed through the hollow hole, so that the space for placing the circuit at the periphery of the speed reducer is saved, and the arrangement layout can be better and more reasonable.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a hollow penetrating planetary speed reducer.
Background
The planetary reducer is an industrial product with wide application, and can reduce the rotating speed of a motor and increase the output torque. The planetary reducer can be used as a matched component for industries such as hoisting, digging, transportation, building and the like.
At present, the traditional planetary reducer on the market is heavy in size, and the central shaft is solid, so that the purpose of passing through a line or a shaft cannot be achieved on equipment with high compactness requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hollow penetrating planetary reducer to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a hollow penetrating planetary reducer comprises a shell, wherein an inner gear ring is arranged on the inner wall of the shell; an input stage hollow planet carrier, an intermediate stage hollow planet carrier and an output stage hollow planet carrier are sequentially arranged in the shell from the input end to the output end; the input stage hollow planet carrier is rotationally connected with the shell through a first bearing, two groups of pin holes which are matched with each other are formed in the input stage hollow planet carrier, a first roller is fixedly installed between the pin holes, an input stage planet wheel is rotationally installed on the first roller through a first needle bearing, and the input stage planet wheel is meshed with an inner gear ring of the shell; the output end in the input stage hollow planet carrier is provided with a mounting hole, and a middle stage sun gear is connected with the mounting hole in a key mode; a group of pin holes are formed in the middle-stage hollow planet carrier, a second roller is fixedly mounted at the pin holes, a middle-stage planet wheel is rotatably mounted on the second roller through a second needle bearing, the middle-stage planet wheel is meshed with an inner gear ring of the shell, and the middle-stage planet wheel is meshed with a middle-stage sun wheel; the output end in the middle-stage hollow planet carrier is provided with a mounting hole, and an output-stage sun gear is connected with the mounting hole through a key; the output-stage hollow planet carrier is rotationally connected with the shell through a fourth bearing; the input end of the output-stage hollow planet carrier is provided with a group of cylindrical protrusions, the cylindrical protrusions are rotatably provided with output-stage planet wheels through third bearings, the output-stage planet wheels are meshed with the inner gear ring of the shell, and the output-stage planet wheels are meshed with the output-stage sun gear.
As a further scheme of the utility model: the middle-stage sun gear is arranged in the mounting hole of the input-stage hollow planet carrier in an interference manner in a double-key mode.
As a still further scheme of the utility model: and the output end of the output-stage sun gear is rotationally connected with the output-stage hollow planet carrier through a second bearing.
As a still further scheme of the utility model: the shell output end is fixedly connected with an end cover, and the end cover abuts against the outer ring of the fourth bearing.
As a still further scheme of the utility model: and the inner ring of the hollow planet carrier of the output stage is provided with a spline.
Compared with the prior art, the utility model has the following beneficial effects:
1. the speed reducer is in a hollow state, and the circuit and the gas circuit at the output end can be placed through the hollow hole, so that the space for placing the circuit at the periphery of the speed reducer is saved, the arrangement and the layout can be better and more reasonable, the installation is more convenient, and the appearance is more concise;
2. the output-stage sun gear is arranged in the mounting hole of the intermediate-stage hollow planet carrier and is connected with the output-stage hollow planet carrier through the second bearing, so that the suspension state of the intermediate-stage hollow planet carrier is avoided;
3. the fourth bearing is fixed through the end cover, so that the axial movement of the hollow planet carrier of the output stage is prevented, and the output is more stable.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic perspective view of an embodiment of the present invention.
Notations for reference numerals: 1-shell, 2-input stage hollow planet carrier, 3-first bearing, 4-first roller, 5-first roller bearing, 6-input stage planet wheel, 7-intermediate stage sun wheel, 8-intermediate stage planet wheel, 9-second roller bearing, 10-second roller, 11-intermediate stage hollow planet carrier, 12-output stage sun wheel, 13-second bearing, 14-output stage planet wheel, 15-third bearing, 16-output stage hollow planet carrier, 17-fourth bearing and 18-end cover.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Examples
Referring to fig. 1-2, in an embodiment of the present invention, a hollow penetrating planetary reducer includes a housing 1, wherein an inner gear ring is disposed on an inner wall of the housing 1; an input stage hollow planet carrier 2, an intermediate stage hollow planet carrier 11 and an output stage hollow planet carrier 16 are sequentially arranged in the shell 1 from the input end to the output end;
the input stage hollow planet carrier 2 is rotationally connected with the shell 1 through a first bearing 3, two groups of pin holes which are matched with each other are formed in the input stage hollow planet carrier 2, a first roller 4 is fixedly installed between the pin holes, the first roller 4 is installed in a double-support mode and is more stable, an input stage planet wheel 6 is rotationally installed on the first roller 4 through a first needle bearing 5, and the input stage planet wheel 6 is meshed with an inner gear ring of the shell 1; the output end in the input stage hollow planet carrier 2 is provided with a mounting hole, the mounting hole is connected with a middle-stage sun gear 7 in a key mode, and preferably, the middle-stage sun gear 7 is arranged in the mounting hole of the input stage hollow planet carrier 2 in an interference mode in a double-key mode;
a group of pin holes are formed in the middle-stage hollow planet carrier 11, a second roller 10 is fixedly mounted at the pin holes, a middle-stage planet wheel 8 is rotatably mounted on the second roller 10 through a second needle bearing 9, the middle-stage planet wheel 8 is meshed with the inner gear ring of the shell 1, and the middle-stage planet wheel 8 is meshed with the middle-stage sun wheel 7; the output end in the middle-stage hollow planet carrier 11 is provided with a mounting hole, the mounting hole is in key connection with an output-stage sun gear 12, and the output end of the output-stage sun gear 12 is rotationally connected with an output-stage hollow planet carrier 16 through a second bearing 13; the output stage sun gear 12 is installed in the installation hole of the intermediate stage hollow planet carrier 11 and is connected with the output stage hollow planet carrier 16 through the second bearing 13, so that the suspension state of the intermediate stage hollow planet carrier 11 is avoided;
the output-stage hollow planet carrier 16 is rotationally connected with the shell 1 through a fourth bearing 17, the output-stage hollow planet carrier 16 is simultaneously used as an output shaft, and an inner ring of the output-stage hollow planet carrier 16 is provided with a spline; an end cover 18 is fixedly connected to the output end of the shell 1, the end cover 18 abuts against the outer ring of the fourth bearing 17, and the fourth bearing 17 is fixed through the end cover 18, so that the axial movement of the output-stage hollow planet carrier 16 is prevented, and the output is more stable; the input end of the output stage hollow planet carrier 16 is provided with a group of cylindrical protrusions, the cylindrical protrusions are rotatably provided with output stage planet wheels 14 through third bearings 15, the output stage planet wheels 14 are meshed with an inner gear ring of the shell 1, and the output stage planet wheels 14 are meshed with the output stage sun wheel 12.
The power is input through the hollow motor, a motor shaft hobbing of the hollow motor extends into the shell 1 and is meshed with the input stage planet wheel 6, the input stage planet wheel 6 rotates circumferentially to drive the input stage hollow planet carrier 2 to rotate in a decelerating manner, the intermediate stage sun wheel 7 rotates along with the input stage sun wheel, the intermediate stage sun wheel 7 drives the intermediate stage planet wheel 8 to rotate circumferentially, so that the intermediate stage hollow planet carrier 11 is driven to rotate in a decelerating manner, the output stage sun wheel 12 rotates along with the output stage sun wheel 12, the output stage sun wheel 12 drives the output stage planet wheel 14 to rotate circumferentially, so that the output stage hollow planet carrier 16 is driven to rotate in a decelerating manner, the power output is carried out, the functions of increasing the torque and reducing the rotating speed of the first stage and the first stage are realized, and the three-stage deceleration effect is achieved; meanwhile, the speed reducer and the motor are in a hollow state, and the circuit and the gas circuit at the output end can be placed through the hollow hole, so that the space for placing the circuit on the periphery of the speed reducer is saved, the arrangement layout can be better and more reasonable, the installation is more convenient, and the appearance is more concise.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A hollow penetrating planetary reducer comprises a shell (1), and is characterized in that an inner gear ring is arranged on the inner wall of the shell (1); an input-stage hollow planet carrier (2), an intermediate-stage hollow planet carrier (11) and an output-stage hollow planet carrier (16) are sequentially arranged in the shell (1) from the input end to the output end;
the input stage hollow planet carrier (2) is rotationally connected with the shell (1) through a first bearing (3), two groups of pin holes which are matched with each other are formed in the input stage hollow planet carrier (2), a first roller (4) is fixedly installed between the pin holes, an input stage planet wheel (6) is rotationally installed on the first roller (4) through a first needle bearing (5), and the input stage planet wheel (6) is meshed with an inner gear ring of the shell (1); the output end in the input stage hollow planet carrier (2) is provided with a mounting hole, and a middle stage sun gear (7) is connected in the mounting hole in a key mode;
a group of pin holes are formed in the middle-stage hollow planet carrier (11), a second roller (10) is fixedly mounted at the pin holes, a middle-stage planet wheel (8) is rotatably mounted on the second roller (10) through a second needle bearing (9), the middle-stage planet wheel (8) is meshed with an inner gear ring of the shell (1), and the middle-stage planet wheel (8) is meshed with the middle-stage sun wheel (7); the output end in the middle-stage hollow planet carrier (11) is provided with a mounting hole, and an output-stage sun gear (12) is connected with the mounting hole through keys;
the output-stage hollow planet carrier (16) is rotationally connected with the shell (1) through a fourth bearing (17); the input end of the output-stage hollow planet carrier (16) is provided with a group of cylindrical protrusions, output-stage planet wheels (14) are rotatably mounted on the cylindrical protrusions through third bearings (15), the output-stage planet wheels (14) are meshed with an inner gear ring of the shell (1), and the output-stage planet wheels (14) are meshed with the output-stage sun wheel (12).
2. The hollow penetrating planetary reducer according to claim 1, characterized in that the intermediate stage sun gear (7) is interference-mounted in the mounting hole of the input stage hollow planet carrier (2) by means of a double bond.
3. A hollow penetrating planetary reducer according to claim 1 or 2, characterized in that the output of said output stage sun gear (12) is rotationally connected to the output stage hollow planet carrier (16) through a second bearing (13).
4. A hollow penetrating planetary reducer according to claim 3, characterized in that the output end of the housing (1) is fixedly connected with an end cover (18), and the end cover (18) is abutted with the outer ring of the fourth bearing (17).
5. A hollow penetrating planetary reducer according to claim 1, characterized in that the output stage hollow planet carrier (16) inner ring is provided with splines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122213041.7U CN215763178U (en) | 2021-09-14 | 2021-09-14 | Hollow penetrating planetary reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122213041.7U CN215763178U (en) | 2021-09-14 | 2021-09-14 | Hollow penetrating planetary reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763178U true CN215763178U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122213041.7U Active CN215763178U (en) | 2021-09-14 | 2021-09-14 | Hollow penetrating planetary reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763178U (en) |
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2021
- 2021-09-14 CN CN202122213041.7U patent/CN215763178U/en active Active
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