CN216959566U - Driving wheel with external motor - Google Patents
Driving wheel with external motor Download PDFInfo
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- CN216959566U CN216959566U CN202220713549.5U CN202220713549U CN216959566U CN 216959566 U CN216959566 U CN 216959566U CN 202220713549 U CN202220713549 U CN 202220713549U CN 216959566 U CN216959566 U CN 216959566U
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- driving
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- rotating shaft
- planet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model provides an external motor driving wheel, which comprises a driving motor, a planetary reducer, a driving ring and wheels, wherein the driving motor is connected with the driving ring; the driving motor comprises a motor shell, a driving assembly and a rotating shaft; the driving assembly is arranged in the motor shell; the driving component is sleeved in the middle of the rotating shaft and is in driving connection with the rotating shaft; the transmission end of the rotating shaft extends out of the motor shell and is connected with the input end of the planetary reducer; the rotating shaft is provided with a through hole along the axis direction; the driving ring is sleeved on the outer sides of the driving motor and the planetary reducer, and the output end of the planetary reducer is connected with the driving ring; the wheel is sleeved on the outer side of the driving ring. The driving wheel with the external motor is simple and reliable, small in size, and the planetary reducer is used, so that the power output is more reliable, and the driving wheel has larger torque.
Description
Technical Field
The utility model relates to the technical field of driving wheels, in particular to a driving wheel with an external motor.
Background
The driving wheel for the robot in the prior art comprises a motor, a speed reducer, wheels and other structures, but the driving wheel is large in size due to the fact that the driving wheel is combined with the motor and speed reducer structures, and the driving wheel is difficult to hang on the robot. At present, in order to facilitate suspension, a reducer structure of a driving wheel is omitted, redundant space is used for fixed suspension, and the problem of insufficient torque is easily caused after the reducer is omitted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a driving wheel with an external motor, which solves the problem that the driving wheel for a robot is too large in size and difficult to hang.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an external motor driving wheel, which comprises a driving motor, a planetary reducer, a driving ring and wheels, wherein the driving motor is arranged on the driving ring;
the driving motor comprises a motor shell, a driving assembly and a rotating shaft; the driving assembly is arranged in the motor shell;
the driving assembly is sleeved in the middle of the rotating shaft and is in driving connection with the rotating shaft;
the transmission end of the rotating shaft extends out of the motor shell and is connected with the input end of the planetary reducer; the rotating shaft is provided with a through hole along the axis direction;
the driving ring is sleeved on the outer sides of the driving motor and the planetary reducer, and the output end of the planetary reducer is connected with the driving ring; the wheel is sleeved on the outer side of the driving ring.
In the driving wheel with the external motor, the planetary reducer comprises a sun ring, a planetary disc, a planetary ring, a plurality of first planetary wheels and a plurality of second planetary wheels;
an avoidance hole is formed in the center of the planetary plate, and the sun ring is rotatably connected to the avoidance hole; the plurality of first planet gears are rotationally connected to the planet disc and are in driving connection with the sun ring;
the plurality of second planet wheels are rotatably connected to the other side of the planet disk, the second planet wheels are arranged around the periphery of the avoidance hole, and the plurality of second planet wheels form a second planet wheel set;
the planet ring is sleeved on the outer side of the second planet wheel set and is in driving connection with the second planet wheel set; one side of the planet ring is fixedly connected with the planet disk;
the sun ring is sleeved on the periphery of the transmission end of the rotating shaft; the rotating shaft penetrates through the avoidance hole and is in driving connection with the second planetary wheel set;
the first planetary gears form a first planetary gear set, and the first planetary gear set is in driving connection with the driving ring.
In the external motor driving wheel, a through hole is formed in the front side of the motor shell, a first bearing is arranged on one side, facing the interior of the motor shell, of the through hole, and the first bearing is sleeved on the rotating shaft;
and a second bearing is arranged on the other side of the through hole and is sleeved on the outer side of the sun ring.
In the external driving wheel of motor, planetary reducer still includes the closing cap, the closing cap sets up in the opposite side of planet ring.
In the external driving wheel of the motor, the rotating shaft comprises a shaft sleeve and a wire pipe;
the shaft sleeve is sleeved on the outer side of the line pipe; the driving assembly is sleeved on the outer side of the shaft sleeve;
the through hole is arranged in the wire tube; one end of the conduit is fixed to the cover.
In the external driving wheel of the motor, the outer wall of the motor shell is provided with a first convex ring, and the inner wall of the driving ring is provided with a second convex ring;
and a third bearing is arranged between the first convex ring and the second convex ring, and a fourth bearing is arranged between the second convex ring and the sealing cover.
In the external driving wheel of the motor, the driving motor also comprises an encoder, and the encoder is arranged in the motor shell and is positioned at the rear side of the driving component;
the other end of the rotating shaft is rotatably connected with the detection end of the encoder.
In the external drive wheel of motor, driving motor still includes brake assembly, brake assembly sets up in the motor housing, brake assembly cover is located the outside of pivot, and is located between driving assembly and the encoder.
In the external motor driving wheel, the driving assembly comprises a shell, a stator and a rotor; the shell is sleeved on the outer side of the rotating shaft, the rotor is assembled on the rotating shaft, and the stator is assembled in the shell.
One technical scheme in the utility model can have the following beneficial effects:
the driving ring is sleeved outside the driving motor, and the driving motor drives the driving ring to rotate through the planetary reducer, so that the purpose of rotating the driving wheel is achieved. The driving motor is arranged in the driving ring, so that the internal structure is more reasonable, the occupation of space is reduced, and the problem that the driving wheel is difficult to hang on the robot due to the large structure volume of the motor and the reducer is solved. The driving wheel with the external motor is simple and reliable, small in size, and the planetary reducer is used, so that the power output is more reliable, and the driving wheel has larger torque.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of one embodiment of the present invention;
FIG. 3 is a view showing a coupling structure of a rotating shaft and a planetary reducer according to an embodiment of the present invention;
FIG. 4 is a connecting structure diagram of the rotating shaft and the second planetary gear set according to one embodiment of the present invention;
in the drawings: the device comprises a driving motor 1, a planetary reducer 2, a driving ring 3 and wheels 4; a first bearing 5 and a second bearing 6; a third bearing 7 and a fourth bearing 8;
the motor comprises a motor shell 11, a driving component 12, a rotating shaft 13, an encoder 14 and a brake component 15; the sun ring 21, the planetary disk 22, the planetary ring 23, the first planet wheel 24, the second planet wheel 25 and the seal cover 26; a first male ring 31;
the shaft sleeve 131, the line pipe 132 and the through hole 133; a second male ring 111.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "front", "back", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, the present invention provides an external motor driving wheel, including a driving motor 1, a planetary reducer 2, a driving ring 3 and wheels 4;
the driving motor 1 comprises a motor shell 11, a driving assembly 12 and a rotating shaft 13; the driving assembly 12 is disposed in the motor housing 11;
the driving component 12 is sleeved in the middle of the rotating shaft 13 and is in driving connection with the rotating shaft 13;
the transmission end of the rotating shaft 13 extends out of the motor shell 11 and is connected with the input end of the planetary reducer 2; the rotating shaft 13 is provided with a through hole 133 along the axial direction;
the driving ring 3 is sleeved outside the driving motor 1 and the planetary reducer 2, and the output end of the planetary reducer 2 is connected with the driving ring 3; the wheel 4 is sleeved on the outer side of the driving ring 3.
According to the utility model, the driving ring 3 is sleeved outside the driving motor 1, and the driving motor 1 drives the driving ring 3 to rotate through the planetary reducer 2, so that the purpose of driving the driving wheel to rotate is realized. The driving motor 1 is arranged in the driving ring 3, so that the internal structure is more reasonable, the occupation of space is reduced, and the problem that the driving wheel is difficult to hang on the robot due to the large structure volume of the motor and the reducer is solved. The driving wheel with the external motor is simple and reliable, small in size, and the planetary reducer 2 is used, so that power output is more reliable, and larger torque is achieved.
Further, the rotation shaft 13 is provided with a through hole 133 in the axial direction, and the wiring in the driving motor 1 is connected to the outside through the through hole 133. During the rotation of the rotating shaft 13, the motor housing 11 remains stationary, and the wires, which are connected to the outside through the through-holes 133, do not rotate along with the rotating shaft 13, preventing the wires in the driving motor 1 from being twisted together by the rotation.
Specifically, the planetary reducer 2 includes a sun ring 21, a planetary disk 22, a planetary ring 23, a plurality of first planetary gears 24, and a plurality of second planetary gears 25;
an avoidance hole is formed in the center of the planetary plate 22, and the sun ring 21 is rotatably connected to the avoidance hole; the plurality of first planet gears 24 are rotationally connected to the planet disc 22, and the first planet gears 24 are in driving connection with the sun ring 21;
the plurality of second planet wheels 25 are rotatably connected to the other side of the planet disk 22, the second planet wheels 25 are arranged around the periphery of the avoidance hole, and the plurality of second planet wheels 25 form a second planet wheel set;
the planet ring 23 is sleeved on the outer side of the second planetary wheel set and is in driving connection with the second planetary wheel set; one side of the planet ring 23 is fixedly connected with the planet disk 22;
the sun ring 21 is sleeved on the periphery of the transmission end of the rotating shaft 13; the rotating shaft 13 penetrates through the avoidance hole and is in driving connection with the second planetary wheel set;
a plurality of first planet wheels 24 form a first planetary wheel set which is in driving connection with the drive ring 3.
The first planet gears 24 surround the periphery of the sun ring 21, and the side walls of the first planet gears 24 are meshed with the side walls of the sun ring 21; the second planet gears 25 surround the outer periphery of the rotating shaft 13, and the side walls of the second planet gears 25 mesh with the side walls of the rotating shaft 13. When the rotating shaft 13 rotates, the rotating shaft 13 drives the sun ring 21 to rotate, and the first planet wheel 24 around the outer side of the sun ring 21 is driven by the sun ring 21 to rotate in the opposite direction; meanwhile, as the second planet gear 25 is meshed with the rotating shaft 13, when the rotating shaft 13 rotates, the rotating shaft 13 drives the second planet gear 25 to rotate in the opposite direction; the plurality of second planet gears 25 rotate simultaneously to drive the planet ring 23 to rotate along with the rotation direction of the rotating shaft 13. Because the planetary ring 23 is fixedly connected with the planetary disk 22, the planetary disk 22 also rotates along with the rotation direction of the rotating shaft 13, and because the rotation directions of the planetary disk 22 and the first planetary wheel 24 are opposite, the purpose of speed reduction is achieved.
Specifically, a through hole is formed in the front side of the motor housing 11, a first bearing 5 is arranged on one side of the through hole facing the inside of the motor housing 11, and the first bearing 5 is sleeved on the rotating shaft 13;
and a second bearing 6 is arranged on the other side of the through hole, and the second bearing 6 is sleeved on the outer side of the sun ring 21.
By adopting the structure, the radial load of the rotating shaft 13 is borne through the matching of the first bearing 5 and the second bearing 6, so that the integral structure is more stable. In a specific embodiment of the present invention, a seal ring is further disposed between the first bearing 5 and the second bearing 6, and the rotating shaft 13 penetrates through the seal ring; the sealing ring is used for isolating the outside from the inside of the motor shell 11, so that the stability of the internal structure is improved, and the service life of the external driving wheel of the motor is prolonged.
Further, the planetary reducer 2 further includes a cover 26, and the cover 26 is disposed on the other side of the planet ring 23.
The sealing cover 26 is arranged on the other side of the planet ring 23, so that the problem that the structure of the planetary reducer 2 is exposed is avoided, foreign matters are prevented from entering the interior of the planetary reducer 2 to influence the normal operation of the planetary reducer 2, and the stability of the internal structure of the planetary reducer 2 is improved.
Further, the shaft 13 includes a sleeve 131 and a conduit 132;
the shaft sleeve 131 is sleeved outside the conduit 132; the driving component 12 is sleeved on the outer side of the shaft sleeve 131;
the through hole 133 is disposed in the conduit 132; one end of the conduit 132 is secured to the cover 26.
In one embodiment of the present invention, the rotary shaft 13 includes a sleeve 131 and a conduit 132, the conduit 132 is hollow and forms a through hole 133, and the through hole 133 is disposed in an axial direction so that a line in the driving motor 1 passes through the through hole 133 to be connected to the outside. The drive assembly 12 is capable of driving the sleeve 131 to rotate along the axis relative to the conduit 132, and one end of the conduit 132 is fixed to the cover 26 to prevent the wires in the drive motor 1 from being wound together following the rotation of the sleeve 131.
Specifically, the outer wall of the motor housing 11 is provided with a first convex ring 31, and the inner wall of the driving ring 3 is provided with a second convex ring 111;
a third bearing 7 is arranged between the first convex ring 31 and the second convex ring 111, and a fourth bearing 8 is arranged between the second convex ring 111 and the seal cover 26.
By adopting the structure, the radial load of the driving motor 1 is borne through the matching of the first bearing 5 and the second bearing 6, so that the integral structure is more stable.
Specifically, the driving motor 1 further includes an encoder 14, and the encoder 14 is disposed in the motor housing 11 and located at the rear side of the driving assembly 12;
the other end of the rotating shaft 13 is rotatably connected with the detection end of the encoder 14.
In an embodiment of the present invention, an encoder 14 is further disposed in the driving motor 1, and the encoder 14 can convert the rotational displacement of the rotating shaft 13 into a digital pulse signal, which can be used for measuring a linear displacement. The wiring of the encoder 14 is connected to an external control device through the through hole 133.
Optionally, the driving motor 1 further includes a brake assembly 15, the brake assembly 15 is disposed in the motor housing 11, and the brake assembly 15 is sleeved on the outer side of the rotating shaft 13 and located between the driving assembly 12 and the encoder 14.
In an embodiment of the present invention, a brake assembly 15 is further disposed in the driving motor 1, the brake assembly 15 can prevent the rotation of the rotating shaft 13 to achieve a braking effect, and the brake assembly 15 is connected to an external control device through the through hole 133.
Specifically, the drive assembly 12 includes a housing, a stator, and a rotor; the shell is sleeved on the outer side of the rotating shaft 13, the rotor is assembled on the rotating shaft 13, and the stator is assembled in the shell.
In an embodiment of the present invention, the driving assembly 12 may refer to an existing motor structure, and the driving assembly 12 converts the electric energy into the mechanical energy to rotate the rotating shaft 13 through the rotation of the rotor. The driving assembly 12 is connected to an external control device through a through hole 133.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art without the exercise of inventive faculty based on the explanations herein, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (9)
1. A kind of motor external drive wheel, characterized by: the device comprises a driving motor, a planetary reducer, a driving ring and wheels;
the driving motor comprises a motor shell, a driving assembly and a rotating shaft; the driving assembly is arranged in the motor shell;
the driving assembly is sleeved in the middle of the rotating shaft and is in driving connection with the rotating shaft;
the transmission end of the rotating shaft extends out of the motor shell and is connected with the input end of the planetary reducer; the rotating shaft is provided with a through hole along the axis direction;
the driving ring is sleeved on the outer sides of the driving motor and the planetary reducer, and the output end of the planetary reducer is connected with the driving ring; the wheel is sleeved on the outer side of the driving ring.
2. The driving wheel with the external motor as set forth in claim 1, wherein: the planetary reducer comprises a sun ring, a planetary disc, a planetary ring, a plurality of first planet wheels and a plurality of second planet wheels;
an avoidance hole is formed in the center of the planet plate, and the sun ring is rotatably connected to the avoidance hole; the plurality of first planet gears are rotationally connected to the planet disc and are in driving connection with the sun ring;
the plurality of second planet wheels are rotatably connected to the other side of the planet disk, the second planet wheels are arranged around the periphery of the avoidance hole, and the plurality of second planet wheels form a second planet wheel set;
the planet ring is sleeved on the outer side of the second planet wheel set and is in driving connection with the second planet wheel set; one side of the planet ring is fixedly connected with the planet disc;
the sun ring is sleeved on the periphery of the transmission end of the rotating shaft; the rotating shaft penetrates through the avoidance hole and is in driving connection with the second planetary wheel set;
and the first planetary gear set is formed by a plurality of first planetary gears and is in driving connection with the driving ring.
3. The driving wheel with the external motor as set forth in claim 2, wherein: a through hole is formed in the front side of the motor shell, a first bearing is arranged on one side, facing the interior of the motor shell, of the through hole, and the first bearing is sleeved on the rotating shaft;
and a second bearing is arranged on the other side of the through hole and is sleeved on the outer side of the sun ring.
4. The driving wheel with the external motor as set forth in claim 2, wherein: the planetary reducer further comprises a sealing cover, and the sealing cover is arranged on the other side of the planetary ring.
5. The driving wheel with the external motor as set forth in claim 4, wherein: the rotating shaft comprises a shaft sleeve and a line pipe;
the shaft sleeve is sleeved on the outer side of the line pipe; the driving assembly is sleeved on the outer side of the shaft sleeve;
the through hole is arranged in the wire tube; one end of the conduit is fixed to the cover.
6. The driving wheel with the external motor as set forth in claim 1, wherein: the outer wall of the motor shell is provided with a first convex ring, and the inner wall of the driving ring is provided with a second convex ring;
and a third bearing is arranged between the first convex ring and the second convex ring, and a fourth bearing is arranged between the second convex ring and the sealing cover.
7. The driving wheel with the external motor as set forth in claim 1, wherein: the driving motor further comprises an encoder, and the encoder is arranged in the motor shell and is positioned at the rear side of the driving assembly;
the other end of the rotating shaft is rotatably connected with the detection end of the encoder.
8. The driving wheel with the external motor as claimed in claim 7, wherein: the driving motor further comprises a brake assembly, the brake assembly is arranged in the motor shell, and the brake assembly is sleeved on the outer side of the rotating shaft and located between the driving assembly and the encoder.
9. The external driving wheel of the motor as set forth in claim 1, wherein: the drive assembly comprises a housing, a stator and a rotor; the shell is sleeved on the outer side of the rotating shaft, the rotor is assembled on the rotating shaft, and the stator is assembled in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220713549.5U CN216959566U (en) | 2022-03-30 | 2022-03-30 | Driving wheel with external motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220713549.5U CN216959566U (en) | 2022-03-30 | 2022-03-30 | Driving wheel with external motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216959566U true CN216959566U (en) | 2022-07-12 |
Family
ID=82298907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220713549.5U Active CN216959566U (en) | 2022-03-30 | 2022-03-30 | Driving wheel with external motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216959566U (en) |
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2022
- 2022-03-30 CN CN202220713549.5U patent/CN216959566U/en active Active
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