CN212775396U - Multi-stage speed reducer and travelling wheel - Google Patents
Multi-stage speed reducer and travelling wheel Download PDFInfo
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- CN212775396U CN212775396U CN202021120716.2U CN202021120716U CN212775396U CN 212775396 U CN212775396 U CN 212775396U CN 202021120716 U CN202021120716 U CN 202021120716U CN 212775396 U CN212775396 U CN 212775396U
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Abstract
The utility model discloses a multistage reduction gear and walking wheel, wherein multistage reduction gear includes: the planetary gear assembly comprises at least two groups of gear assemblies, wherein each gear assembly comprises an input shaft, an output part and a plurality of planetary gears, and the output part of the former group of gear assemblies is fixedly connected with the input shaft of the latter group of gear assemblies; a ring gear; and a first bearing and a second bearing. This multistage reduction gear, the input shaft that outside motor drove first group gear assembly is rotatory, each gear assembly is the transmission in proper order, finally realize the output member's of last group gear assembly speed reduction output, great reduction ratio has on the whole, because the internal tooth both sides of ring gear set up first step and second step respectively, cooperate with first bearing and second bearing respectively through first step and second step, and the outside and the inboard of ring gear are located respectively to first step and second step, make the ring gear at the internal tooth thickness of part bigger, the ring gear has higher intensity, can bear great load, this utility model is used for the reduction gear field.
Description
Technical Field
The utility model relates to a reduction gear field especially relates to a multistage reduction gear and walking wheel.
Background
The planetary reducer realizes speed reduction through the transmission of planetary gear, and the reduction gear can connect wheel hub and form the walking wheel of integral type, and the planetary reducer of current connection walking wheel, ring gear pass through the bearing and are connected with wheel hub, and the thickness of ring gear is thinner, and intensity is not high, leads to planetary reducer can not bear great load.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a multistage reduction gear and walking wheel, the thickness of ring gear is great, has higher intensity to great reduction ratio has.
According to the utility model discloses an embodiment of first aspect provides a multistage reduction gear, include:
the planetary gear assembly comprises at least two groups of gear assemblies, wherein each group of gear assemblies comprises an input shaft, an output part and a plurality of planetary gears, a first gear is arranged on the input shaft, each planetary gear is meshed with the first gear, each planetary gear is arranged around the first gear, the output part is hinged with each planetary gear, each group of gear assemblies are sequentially arranged along the axial direction, and the output part of the former group of gear assemblies is fixedly connected with the input shaft of the latter group of gear assemblies;
the planetary gear set comprises a gear ring, a first gear, a second gear and a third gear, wherein the gear ring is provided with inner teeth meshed with the planetary gears, a first step is arranged on one side of the inner teeth on the gear ring, and a second step is arranged on the other side of the inner teeth on the gear ring, wherein the first step is arranged on the outer wall of the gear ring, and the second step is arranged on the inner wall of the gear ring; and
the first bearing is matched with the first step, the outer ring of the second bearing is matched with the second step, and the inner ring of the second bearing is matched with the output component of the last group of gear assemblies.
The multi-stage speed reducer at least has the following beneficial effects: the input shaft that outside motor drove first group gear assembly is rotatory, in each group gear assembly, the input shaft is rotatory, it is rotatory to drive planetary gear through first gear, planetary gear is around when with the articulated shaft rotation of output member, revolve around the input shaft, thereby it is rotatory to drive output member, the output member of preceding group gear assembly and the input shaft fixed connection of a set of gear assembly in back, and then drive a set of gear assembly in back, transmission in proper order, finally realize the output member's of last group gear assembly speed reduction output, whole great reduction ratio has. The ring gear is fixed to be set up, because the internal tooth both sides of ring gear set up first step and second step respectively, cooperate with first bearing and second bearing respectively through first step and second step to the outside and the inboard of ring gear are located respectively to first step and second step, make the ring gear at the thickness ratio of internal tooth part great, the ring gear has higher intensity, can bear great load.
According to the utility model discloses multistage reduction gear of the first aspect embodiment, the reduction gear still includes first flange, first flange with first bearing butt, first flange with ring gear fixed connection.
According to the utility model discloses multistage reduction gear of the embodiment of first aspect, multistage reduction gear still includes the coupling, be equipped with the first hole and the second hole of coaxial setting on the coupling, first hole and first group the input shaft fixed connection of gear assembly, the second hole be used for with the output shaft of external motor the coupling with be equipped with the third bearing between the first flange.
According to the utility model discloses the multistage reduction gear of the first aspect embodiment, multistage reduction gear still includes the motor, the output shaft and the first set of motor the input shaft fixed connection of gear assembly motor and first set of be equipped with the spacer ring between the planetary gear of gear assembly, the center of first flange is equipped with the installation and fixes the through-hole of motor.
According to the utility model discloses multistage reduction gear of the embodiment of the first aspect be equipped with the support on the first flange.
According to the utility model discloses multistage reduction gear of the first aspect embodiment, multistage reduction gear still includes the second flange, the second flange with the second bearing butt, the second flange with ring gear fixed connection.
According to the utility model discloses a second aspect embodiment provides a walking wheel, including foretell multistage reduction gear, still include wheel hub and rubber coating layer, be equipped with in the wheel hub and hold the cavity of ring gear, the rubber coating layer is located wheel hub's the outside, wheel hub and last a set of the output part fixed connection of gear assembly.
The travelling wheel at least has the following beneficial effects: the walking wheel comprising the multi-stage speed reducer has a large speed reduction ratio, and the gear ring has large thickness of the inner gear part, high strength and can bear large load.
According to the utility model discloses the second aspect embodiment the walking wheel, wheel hub with the clearance has between the ring gear, the outer lane of first bearing with wheel hub cooperates.
According to the utility model discloses the second aspect embodiment the walking wheel, last a set of be equipped with the center pin on the terminal surface of the output part of gear assembly, be equipped with on the wheel hub with center pin complex centre bore.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural diagram of a multi-stage speed reducer according to an embodiment of the present invention;
fig. 2 is a sectional schematic view of the multi-stage speed reducer according to the embodiment of the present invention;
FIG. 3 is a schematic sectional view of a ring gear according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a separating structure of two gear assemblies according to an embodiment of the present invention
FIG. 5 is a cutaway schematic view of two gear assemblies of an embodiment of the present invention separated;
fig. 6 is a sectional schematic view of the multi-stage speed reducer with the motor according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of the multi-stage speed reducer with a motor according to the embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a multi-stage speed reducer with a motor and a support according to an embodiment of the present invention;
FIG. 9 is a cut-away schematic view of a routine traveling wheel embodying the present invention;
FIG. 10 is a schematic structural view of a travelling wheel embodying the present invention;
FIG. 11 is a schematic diagram of a conventional traveling wheel with a motor according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a conventional traveling wheel with a motor and a support according to an embodiment of the present invention;
reference numerals: the gear assembly 100, the input shaft 10, the first gear 11, the planet gear 20, the output component 30, the central shaft 31, the gear ring 40, the internal teeth 41, the first step 42, the second step 43, the first bearing 51, the second bearing 52, the first flange 61, the support 611, the second flange 62, the coupling 70, the second hole 71, the third bearing 72, the motor 80, the spacer ring 90, the hub 200 and the encapsulating layer 300.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 5, an embodiment of the present invention provides a multistage speed reducer, including: at least two sets of gear assemblies 100, the gear assemblies 100 include an input shaft 10, an output member 30 and a plurality of planet gears 20, in each set of gear assemblies 100, a first gear 11 is arranged on the input shaft 10, each planet gear 20 is meshed with the first gear 11, each planet gear 20 is arranged around the first gear 11, the output member 30 is hinged with each planet gear 20, the output member 30 is coaxially arranged with the input shaft 10, each set of gear assemblies 100 are sequentially arranged along the axial direction, wherein the output member 30 of the previous set of gear assemblies 100 is fixedly connected with the input shaft 10 of the next set of gear assemblies 100; a ring gear 40, the ring gear 40 having internal teeth 41 engaged with the respective planetary gears 20, the ring gear 40 having a first step 42 provided on one side of the internal teeth 41, the ring gear 40 having a second step 43 provided on the other side of the internal teeth 41, wherein the first step 42 is provided on an outer wall of the ring gear 40, and the second step 43 is provided on an inner wall of the ring gear 40; and a first bearing 51 and a second bearing 52, the first bearing 51 cooperating with the first step 42, the outer race of the second bearing 52 cooperating with the second step 43, and the inner race of the second bearing 52 cooperating with the output member 30 of the last set of gear assemblies 100.
The forward most gear assembly 100 (adjacent the first step 42) is the first set of gear assemblies 100, each gear assembly 100 is axially disposed in series, and the rearward most gear assembly 100 (adjacent the second step 43) is the last set of gear assemblies 100. It will be appreciated that the number of gear assemblies 100 can be set as desired, with the greater the number of gear assemblies 100, the greater the reduction ratio, and in this embodiment, there are two sets of gear assemblies 100, see fig. 4 and 5.
The multi-stage reducer of this embodiment, the external motor drives the input shaft 10 of the first set of gear assemblies 100 to rotate, in each set of gear assemblies 100, the input shaft 10 rotates, it is rotatory to drive the planetary gear 20 through the first gear 11, the planetary gear 20 revolves around the input shaft 10 while revolving around the articulated shaft articulated with the output part 30, thereby it is rotatory to drive the output part 30, the output part 30 of the former set of gear assemblies 100 and the input shaft 10 fixed connection of the latter set of gear assemblies 100, and then drive the latter set of gear assemblies 100, in proper order, finally realize the speed reduction output of the output part 30 of the last set of gear assemblies 100, have great reduction ratio on the whole. The gear ring 40 is fixedly arranged, the first step 42 and the second step 43 are respectively arranged on two sides of the inner teeth 41 of the gear ring 40, the first step 42 and the second step 43 are respectively matched with the first bearing 51 and the second bearing 52, and the first step 42 and the second step 43 are respectively arranged on the outer side and the inner side of the gear ring 40, so that the gear ring 40 is larger in thickness of the inner teeth 41 part, and the gear ring 40 has higher strength and can bear larger load. The first bearing 51 is for cooperating with the hub 200 of the road wheel to support the hub 200 of the road wheel.
It is understood that in each gear assembly 100, the number of the planet gears 20 can be set according to the requirement, and at least one planet gear 20 is provided, and in order to ensure the force balance, referring to fig. 4, in the present embodiment, the number of the planet gears 20 is 3, and the planet gears are evenly distributed around the first gear 11.
In the present embodiment, the multi-stage speed reducer further includes a first flange 61 and a second flange 62. Wherein, the first flange 61 is abutted with the first bearing 51, the first flange 61 is fixedly connected with the gear ring 40, specifically, a bolt connection can be adopted, the position of the first bearing 51 can be limited by the first flange 61, the axial float of the first bearing 51 is avoided, and the first bearing 51 is between the side wall of the first step 42 and the first flange 61. The first flange 61 is fixedly connected with an external bracket, so that the whole speed reducer is fixed, and the shape of the first flange 61 can be set as required. The second flange 62 abuts the second bearing 52, the second flange 62 is fixedly connected to the ring gear 40, and similarly, the second flange 62 serves to define the position of the second bearing 52 and prevent the second bearing 52 from moving axially.
Referring to fig. 2, in some embodiments, the multi-stage speed reducer further includes a coupling member 70, the coupling member 70 is provided with a first hole and a second hole 71 coaxially arranged, the first hole is fixedly connected with the input shaft 10 of the first set of gear assemblies 100, the second hole 71 is used for connecting with the output shaft of the external motor, and a third bearing 72 is arranged between the coupling member 70 and the first flange 61. An external motor is connected through a coupling 70 and drives the input shaft 10 of the first set of gear assemblies 100 to rotate through the coupling 70.
Referring to fig. 6 and 7, in some other embodiments, the multi-stage speed reducer further includes a motor 80, an output shaft of the motor 80 is fixedly connected to the input shaft 10 of the first gear assembly 100, a spacer ring 90 is disposed between the motor 80 and the planetary gears 20 of the first gear assembly 100, and a through hole for mounting and fixing the motor 80 is disposed at the center of the first flange 61. The input shaft 10 of the first set of gear assemblies 100 is directly rotated by the motor 80. The planet gears 20 of the first set of gear assemblies 100 are positioned by the spacer ring 90 to avoid axial play of the planet gears 20, and simultaneously to avoid direct contact between the end surfaces of the planet gears 20 and the end surfaces of the motor 80, reducing contact friction.
Referring to fig. 8, in some embodiments, a support 611 is disposed on the first flange 61, the first flange 61 is fixed on a horizontal plane by the support 611, and the support 611 is provided with a plurality of mounting holes.
Referring to fig. 9 and 10, the embodiment of the present invention further provides a traveling wheel, which includes the above-mentioned multi-stage speed reducer, and further includes a wheel hub 200 and a rubber coating layer 300, a cavity for accommodating the gear ring 40 is provided in the wheel hub 200, the rubber coating layer 300 is provided outside the wheel hub 200, and plays a role in protecting the wheel hub 200, and the wheel hub 200 is fixedly connected to the output part 30 of the last set of gear assemblies 100. The walking wheel comprising the multi-stage speed reducer has a large speed reduction ratio, and the gear ring 40 has large thickness at the inner tooth 41 part, high strength and can bear large load.
In this embodiment, the end surface of the output member 30 of the last set of gear assemblies 100 is provided with a central shaft 31, the hub 200 is provided with a central hole matched with the central shaft 31, and the hub 200 and the output member 30 are fixedly connected through bolts. The hub 200 has a clearance with the ring gear 40, and the outer race of the first bearing 51 is fitted to the hub 200.
In the travelling wheel of this embodiment, the gear ring 40 is fixedly connected with the external bracket through the first flange 61, the motor 80 drives the input shaft 10 of the first set of gear assemblies 100 to rotate, each gear assembly 100 is sequentially driven to realize the speed reduction rotation of the output part 30 of the last set of gear assemblies 100, and the output part 30 of the last set of gear assemblies 100 drives the hub 200 and the encapsulating layer 300 to rotate. The hub 200 is fixedly connected with the output member 30 of the last set of gear assemblies 100, wherein the hub 200 is engaged with the outer ring of the first bearing 51, and the output member 30 of the last set of gear assemblies 100 is engaged with the inner ring of the second bearing 52, thereby achieving the support and centering of the hub 200.
Referring to fig. 11, there is shown a road wheel with a motor 80, corresponding to the speed reducer shown in fig. 7; referring to fig. 12, a road wheel with a motor 80 and a support 611 corresponds to the speed reducer shown in fig. 8.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. A multi-speed reducer, comprising:
the planetary gear assembly comprises at least two groups of gear assemblies, wherein each group of gear assemblies comprises an input shaft, an output part and a plurality of planetary gears, a first gear is arranged on the input shaft, each planetary gear is meshed with the first gear, each planetary gear is arranged around the first gear, the output part is hinged with each planetary gear, each group of gear assemblies are sequentially arranged along the axial direction, and the output part of the former group of gear assemblies is fixedly connected with the input shaft of the latter group of gear assemblies;
the planetary gear set comprises a gear ring, a first gear, a second gear and a third gear, wherein the gear ring is provided with inner teeth meshed with the planetary gears, a first step is arranged on one side of the inner teeth on the gear ring, and a second step is arranged on the other side of the inner teeth on the gear ring, wherein the first step is arranged on the outer wall of the gear ring, and the second step is arranged on the inner wall of the gear ring; and
the first bearing is matched with the first step, the outer ring of the second bearing is matched with the second step, and the inner ring of the second bearing is matched with the output component of the last group of gear assemblies.
2. The multi-speed reducer of claim 1, wherein: the speed reducer further comprises a first flange, the first flange is abutted to the first bearing, and the first flange is fixedly connected with the gear ring.
3. The multi-speed reducer of claim 2, wherein: the multistage speed reducer further comprises a coupling part, wherein a first hole and a second hole which are coaxially arranged are formed in the coupling part, the first hole is fixedly connected with the input shaft of the gear assembly, the second hole is used for being connected with an output shaft of an external motor, and a third bearing is arranged between the coupling part and the first flange.
4. The multi-speed reducer of claim 2, wherein: the multistage speed reducer further comprises a motor, an output shaft of the motor is fixedly connected with an input shaft of the first group of gear assemblies, a spacing ring is arranged between the motor and the planetary gears of the first group of gear assemblies, and a through hole for installing and fixing the motor is formed in the center of the first flange.
5. The multi-speed reducer of claim 4, in which: and a support is arranged on the first flange.
6. The multi-speed reducer of any one of claims 1-5, wherein: the multistage speed reducer further comprises a second flange, the second flange is abutted to the second bearing, and the second flange is fixedly connected with the gear ring.
7. A walking wheel, its characterized in that: the multi-stage speed reducer comprises a hub and an encapsulating layer, wherein a cavity for accommodating the gear ring is arranged in the hub, the encapsulating layer is arranged on the outer side of the hub, and the hub is fixedly connected with an output part of the last group of gear assemblies.
8. The road wheel of claim 7, wherein: a gap is reserved between the hub and the gear ring, and the outer ring of the first bearing is matched with the hub.
9. The road wheel of claim 7 or 8, wherein: and a central shaft is arranged on the end face of the output part of the last group of gear assemblies, and a central hole matched with the central shaft is arranged on the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120716.2U CN212775396U (en) | 2020-06-16 | 2020-06-16 | Multi-stage speed reducer and travelling wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021120716.2U CN212775396U (en) | 2020-06-16 | 2020-06-16 | Multi-stage speed reducer and travelling wheel |
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| Publication Number | Publication Date |
|---|---|
| CN212775396U true CN212775396U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021120716.2U Active CN212775396U (en) | 2020-06-16 | 2020-06-16 | Multi-stage speed reducer and travelling wheel |
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|---|---|
| CN (1) | CN212775396U (en) |
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2020
- 2020-06-16 CN CN202021120716.2U patent/CN212775396U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A multi-stage reducer and traveling wheel Effective date of registration: 20230224 Granted publication date: 20210323 Pledgee: China Co. truction Bank Corp Dongguan branch Pledgor: DONGGUAN ZHUOLAN AUTOMATION EQUIPMENT Co.,Ltd. Registration number: Y2023980033231 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 5, Lingang Road, Wangniudun, Dongguan, Guangdong 523000 Patentee after: DONGGUAN ZHUOLAN AUTOMATION EQUIPMENT Co.,Ltd. Address before: No.17 Zhifu Road, Mowu community, Wanjiang District, Dongguan City, Guangdong Province 523000 Patentee before: DONGGUAN ZHUOLAN AUTOMATION EQUIPMENT Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |