CN217301458U - Two-stage walking speed reducer - Google Patents

Two-stage walking speed reducer Download PDF

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Publication number
CN217301458U
CN217301458U CN202220772763.8U CN202220772763U CN217301458U CN 217301458 U CN217301458 U CN 217301458U CN 202220772763 U CN202220772763 U CN 202220772763U CN 217301458 U CN217301458 U CN 217301458U
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Prior art keywords
primary
gear
planet
stage
sun gear
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CN202220772763.8U
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Chinese (zh)
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易文
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Hubei Kefeng Intelligent Transmission Co Ltd
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Hubei Kefeng Intelligent Transmission Co Ltd
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Abstract

The utility model provides a doublestage walking speed reducer, a serial communication port, include: a reel; the input shaft is rotatably arranged on the shaft disc; a secondary sun gear mounted on the front end of the input shaft; the plurality of secondary planet wheels are respectively externally meshed with the secondary sun wheel; the secondary gear ring is fixedly connected with the shaft disc and is internally meshed with each secondary planet wheel respectively; each secondary planet gear is arranged on the planet carrier; the first-stage sun gear is arranged at the rear end of the planet carrier; the plurality of primary planet wheels are externally meshed with the primary sun wheel respectively; the primary gear ring is internally meshed with each primary planet gear respectively; the input shaft rotates to drive the secondary sun gear to rotate, the secondary sun gear and each secondary planet gear drive the planet carrier to rotate, the planet carrier drives the primary sun gear to rotate, and the primary sun gear and each primary planet gear drive the primary gear ring to rotate. The utility model has the advantages that: the axial dimension is short, and is small, and the drive ratio is big, and output torque is big, and the holding power is strong.

Description

Two-stage walking speed reducer
Technical Field
The utility model relates to a mechanical transmission technical field especially relates to a doublestage walking speed reducer.
Background
The walking speed reducer is an industrial product with wide application, can reduce the rotating speed of a motor and increase output torque, and can be used as a matching component in industries such as hoisting, excavating, transporting, building and the like. For example, when using on the AGV dolly, along with the development of science and technology, the degree of automation of AGV dolly requires more and more high, and present walking speed reducer is because the structure is complicated, and the train is more, and axial dimension is longer, leads to installation space limited, can't satisfy the AGV dolly helm system that is applied to complicated scene to the requirement of speed reducer.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve present walking speed reducer structure complicacy, the train is more, and axial dimension is longer, the limited problem of installation space, the embodiment of the utility model provides a doublestage walking speed reducer.
An embodiment of the utility model provides a doublestage walking speed reducer, include:
a reel;
an input shaft rotatably mounted on the hub;
a secondary sun gear mounted to a front end of the input shaft;
the secondary planet wheels are externally meshed with the secondary sun wheel respectively;
the secondary gear ring is fixedly connected with the shaft disc and is internally meshed with each secondary planet wheel respectively;
the secondary planet gears are respectively arranged on the planet carrier;
a first-stage sun gear mounted at the rear end of the planet carrier;
the primary planet wheels are externally meshed with the primary sun wheel respectively;
the primary gear ring is internally meshed with each primary planet gear respectively;
wherein the input shaft is the input, the one-level ring gear is the output: the input shaft rotates to drive the secondary sun gear to rotate, the secondary sun gear and each secondary planet gear drive the planet carrier to rotate, the planet carrier drives the primary sun gear to rotate, and the primary sun gear and each primary planet gear drive the primary gear ring to rotate.
Further, the width of the secondary planet wheel is smaller than that of the primary planet wheel.
Further, the width of the secondary sun gear is smaller than the width of the primary sun gear.
Further, the primary sun gear is arranged coaxially with the carrier, and the secondary sun gear is arranged coaxially with the input shaft.
Further, the primary sun gear is pressed in an inner hole of the planet carrier.
The rear end of the secondary gear ring is connected with the shaft disc, and the front end of the secondary gear ring is connected with the end cover.
Furthermore, the front end of the primary gear ring surrounds the secondary gear ring and is connected with the secondary gear ring through a bearing, and the rear end of the primary gear ring surrounds the front end of the shaft disc and is connected with the shaft disc through a bearing.
Furthermore, the rear end of the input shaft is connected with the inner wall of the shaft disc through two bearings.
Furthermore, the front end of the shaft disc is provided with a plurality of first-stage pin shafts extending forwards, and each first-stage planet wheel is mounted on one first-stage pin shaft.
Furthermore, a plurality of second-level pin shafts are arranged on the planet carrier, and each second-level planet wheel is arranged on one second-level pin shaft.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is:
1. the utility model discloses a doublestage walking speed reducer, second grade gear drive part are planetary gear train, and one-level gear drive part is the ordinary gear train, and axial dimensions is short, and is small, and the drive ratio is big, and output torque is big, and holding power is strong.
2. The utility model discloses a doublestage walking speed reducer, input shaft input, one-level ring gear output, output mode is special, and transmission efficiency is high, powerful, is particularly useful for the steering wheel transmission system of AGV dolly.
Drawings
Fig. 1 is a schematic diagram of a two-stage walking speed reducer of the present invention.
In the figure: 1-fourth single-row deep groove ball bearing, 2-second-row pin shaft, 3-second-row planet wheel gasket, 4-second-row planet wheel, 5-second-row needle roller bearing, 6-second-row planet wheel gasket, 7-cylindrical pin, 8-fifth single-row deep groove ball bearing, 9-first-row planet wheel gasket, 10-first-row planet wheel, 11-first-row needle roller bearing, 12-first-row pin shaft, 13-first-row planet wheel gasket, 14-shaft disc, 15-second single-row deep groove ball bearing, 16-elastic retainer ring, 17-first single-row deep groove ball bearing, 18-input shaft, 19-sixth single-row deep groove ball bearing, 20-first-row sun wheel, 21-planet carrier, 22-third single-row deep groove ball bearing, 23-second-row sun wheel, 24-second gear ring, 25-inner hexagonal socket head cap screw, 26-first-stage gear ring and 27-end cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings. The following description is of the preferred embodiment of the present invention and is provided to enable a person of ordinary skill in the art to make and use the invention and is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a two-stage walking speed reducer, in which the speed reducer is applied to a steering wheel system of an AGV, it can be understood that the speed reducer can also be applied to transmission systems of other wheeled or tracked vehicles, and the application range is not limited by the embodiments of the present invention.
As shown in fig. 1, the speed reducer mainly includes a hub 14, an input shaft 18, a secondary sun gear 23, a plurality of secondary planet gears 4, a secondary ring gear 24, a planet carrier 21, a primary sun gear 20, a plurality of primary planet gears 10, a primary ring gear 26, and an end cover 27.
The input shaft 18 is rotatably mounted on the shaft disc 14, the shaft disc 14 is specifically a hollow flange structure, the input shaft 18 and the shaft disc 14 are coaxially arranged, and the rear end of the input shaft 18 is mounted in the shaft disc 14, where the rear end of the input shaft 18 is connected with the inner wall of the shaft disc 14 through two bearings. Specifically, the rear end of input shaft 18 is equipped with two ladder installation departments, two the bearing is first single deep groove ball bearing 17 and second single deep groove ball bearing 15 respectively, first single deep groove ball bearing 17 with second single deep groove ball bearing 15 installs respectively in two on the ladder installation department. The inner wall of the shaft disc 14 is provided with a circlip 16, wherein the circlip 16 blocks the outer side of the first single-row deep groove ball bearing 17. This rotatably mounts the input shaft 18 within the hub 14.
The secondary sun gear 23, each secondary planet gear 4, the secondary ring gear 24 and the planet carrier 21 form a secondary transmission part. The secondary sun gear 23 is mounted at the front end of the input shaft 18, each secondary planet gear 4 is externally engaged with the secondary sun gear 23, the secondary ring gear 24 is fixedly connected with the shaft disc 14 and is internally engaged with each secondary planet gear 4, and each secondary planet gear 4 is mounted on the planet carrier 21.
Specifically, the secondary sun gear 23 and the input shaft 18 are coaxially arranged, and the secondary sun gear 23 is press-fitted in an inner hole of the input shaft 18 to achieve installation. Each secondary planet wheel 4 encircles the secondary sun gear 23, be equipped with a plurality of secondary round pin axles 2 on the planet carrier 21, each secondary planet wheel 4 is installed in one on the secondary round pin axle 2. In this embodiment, the number of the secondary planet gears 4 is three, the planet carrier 21 is provided with three secondary pin holes arranged at intervals along the circumferential direction, each secondary pin hole is internally provided with one secondary pin shaft 2, and the secondary pin shafts 2 and the secondary pin holes are in interference fit. The secondary pin shaft 2 is sleeved with a secondary needle roller bearing 5, and the secondary planet wheel 4 is sleeved on the secondary needle roller bearing 5. And two sides of the secondary planet wheel 4 are also respectively provided with secondary planet wheel gaskets 3 and 6.
The secondary ring gear 24 is arranged around each secondary planet gear 4, and the secondary ring gear 24 is fixedly connected with the front end of the shaft disc 14 through a cylindrical pin 7, so that the secondary ring gear 24 cannot rotate, and the planet carrier 21 can rotate.
The end cover 27 is arranged on the outer side of the secondary gear ring 24, a plurality of hexagon socket head cap screws 25 are arranged on the end cover 27, the hexagon socket head cap screws 25 penetrate through the secondary gear ring 24 and extend to the front end of the shaft disc 14, and therefore the end cover 27, the secondary gear ring 24 and the shaft disc 14 are locked together through the hexagon socket head cap screws 25. The end cap 27, the secondary gear ring 24 and the shaft disc 14 are combined into a whole, and the whole is fixed when the speed reducer works.
And a third single-row deep groove ball bearing 22 and a fourth single-row deep groove ball bearing 1 are respectively installed at two ends of the outer wall of the planet carrier 21, wherein the third single-row deep groove ball bearing 22 is fixedly pressed through the inner wall of the shaft disc 14, and the fourth single-row deep groove ball bearing 1 is fixedly pressed through the inner wall of the end cover 27.
The primary sun gear 20, each primary planet gear 10 and the primary ring gear 26 form a primary transmission part. The primary sun gear 20 is mounted at the rear end of the planet carrier 21, each primary planet gear 10 is externally engaged with the primary sun gear 20, and the primary gear ring 26 is internally engaged with each primary planet gear 10.
Specifically, the primary sun gear 20 and the planet carrier 21 are coaxially arranged, the primary sun gear 20 is press-fitted in an inner hole of the planet carrier 21, the primary sun gear 20 is located behind the secondary sun gear 23, and the primary sun gear 20 surrounds the input shaft 18 and is separated from and does not contact with the input shaft 18.
Each primary planet wheel 10 is arranged around the primary sun wheel 20, the front end of the shaft disc 14 is provided with a plurality of primary pin shafts 12 extending forwards, and each primary planet wheel 10 is mounted on one primary pin shaft 12. In this embodiment, the number of the primary planet gears 10 is three, the shaft disc 14 is provided with three primary pin holes arranged at intervals along the circumferential direction, each primary pin hole is internally provided with one primary pin shaft 12, and the primary pin shaft 12 and the primary pin hole are in interference fit. The first-stage pin shaft 12 is sleeved with a first-stage needle bearing 11, and the first-stage planet wheel 10 is sleeved on the first-stage needle bearing 11. And primary planet wheel gaskets 9 and 13 are respectively arranged on two sides of the primary planet wheel 10.
The primary ring gear 26 is disposed around each of the primary planet gears 10. The front end of the primary gear ring 26 surrounds the secondary gear ring 24 and is connected with the secondary gear ring 24 through a bearing, and the rear end of the primary gear ring 26 surrounds the front end of the shaft disc 14 and is connected with the shaft disc 14 through a bearing. Specifically, the front end of the inner wall of the primary gear ring 26 is connected with the outer wall of the secondary gear ring 24 through a fifth single-row deep groove ball bearing 8, and the rear end of the inner wall of the primary gear ring 26 is connected with the front end of the outer wall of the shaft disc 14 through a sixth single-row deep groove ball bearing 19.
Preferably, the width of the secondary planet wheels 4 is smaller than the width of the primary planet wheels 10. The width of the secondary sun gear 23 is smaller than the width of the primary sun gear 20. Under the condition that the wheel train strength meets the working condition, the width of a secondary wheel train gear is reduced, the axial size of the speed reducer is shortened, and the cost of raw materials is reduced.
The operating principle of the speed reducer is as follows: the input shaft 18 is an input end, the primary gear ring 26 is an output end, the input shaft 18 is driven to rotate by a power device such as a motor, the input shaft 18 rotates to drive the secondary sun gear 23 to rotate, the secondary sun gear 23 and the secondary planet gears 4 drive the planet carrier 21 to rotate, the planet carrier 21 drives the primary sun gear 20 to rotate, and the primary sun gear 20 and the primary planet gears 10 drive the primary gear ring 26 to rotate because the shaft disc 14 cannot rotate.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that they are relative concepts that may be modified in various manners of use and placement and that the use of directional terms should not be taken to limit the scope of what is claimed.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A twin-stage travel reducer, comprising:
a reel;
an input shaft rotatably mounted on the hub;
a secondary sun gear attached to a front end of the input shaft;
the secondary planet wheels are externally meshed with the secondary sun wheel respectively;
the secondary gear ring is fixedly connected with the shaft disc and is internally meshed with each secondary planet wheel respectively;
the secondary planet gears are respectively arranged on the planet carrier;
a first-stage sun gear mounted at the rear end of the planet carrier;
the primary planet wheels are externally meshed with the primary sun wheel respectively;
the primary gear ring is internally meshed with each primary planet gear respectively;
wherein the input shaft is the input, the one-level ring gear is the output: the input shaft rotates to drive the secondary sun gear to rotate, the secondary sun gear and each secondary planet gear drive the planet carrier to rotate, the planet carrier drives the primary sun gear to rotate, and the primary sun gear and each primary planet gear drive the primary gear ring to rotate.
2. The twin-stage walking reducer of claim 1, wherein: the width of the secondary planet wheel is smaller than that of the primary planet wheel.
3. The twin stage running reducer of claim 1, wherein: the width of the secondary sun gear is smaller than that of the primary sun gear.
4. The twin stage running reducer of claim 1, wherein: the first-stage sun gear and the planet carrier are coaxially arranged, and the second-stage sun gear and the input shaft are coaxially arranged.
5. The twin stage running reducer of claim 1, wherein: the primary sun wheel is pressed in an inner hole of the planet carrier.
6. The twin stage running reducer of claim 1, wherein: the rear end of the secondary gear ring is connected with the shaft disc, and the front end of the secondary gear ring is connected with the end cover.
7. The twin-stage walking reducer of claim 1, wherein: the front end of the primary gear ring surrounds the secondary gear ring and is connected with the secondary gear ring through a bearing, and the rear end of the primary gear ring surrounds the front end of the shaft disc and is connected with the shaft disc through a bearing.
8. The twin-stage walking reducer of claim 1, wherein: the rear end of the input shaft is connected with the inner wall of the shaft disc through two bearings.
9. The twin-stage walking reducer of claim 1, wherein: the front end of the shaft disc is provided with a plurality of first-stage pin shafts extending forwards, and each first-stage planet wheel is mounted on one first-stage pin shaft.
10. The twin stage running reducer of claim 1, wherein: the planet carrier is provided with a plurality of secondary pin shafts, and each secondary planet wheel is arranged on one secondary pin shaft.
CN202220772763.8U 2022-04-06 2022-04-06 Two-stage walking speed reducer Active CN217301458U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220772763.8U CN217301458U (en) 2022-04-06 2022-04-06 Two-stage walking speed reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220772763.8U CN217301458U (en) 2022-04-06 2022-04-06 Two-stage walking speed reducer

Publications (1)

Publication Number Publication Date
CN217301458U true CN217301458U (en) 2022-08-26

Family

ID=82938885

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220772763.8U Active CN217301458U (en) 2022-04-06 2022-04-06 Two-stage walking speed reducer

Country Status (1)

Country Link
CN (1) CN217301458U (en)

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