WO2024051263A1 - 多自由度驱动轮及移动平台 - Google Patents

多自由度驱动轮及移动平台 Download PDF

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Publication number
WO2024051263A1
WO2024051263A1 PCT/CN2023/101135 CN2023101135W WO2024051263A1 WO 2024051263 A1 WO2024051263 A1 WO 2024051263A1 CN 2023101135 W CN2023101135 W CN 2023101135W WO 2024051263 A1 WO2024051263 A1 WO 2024051263A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving member
wheel
driving
gear
assembly
Prior art date
Application number
PCT/CN2023/101135
Other languages
English (en)
French (fr)
Inventor
刘叶青
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2024051263A1 publication Critical patent/WO2024051263A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D9/00—Steering deflectable wheels not otherwise provided for

Definitions

  • This application relates to the technical field of mobile platforms, specifically to a multi-degree-of-freedom driving wheel and a mobile platform.
  • This application provides a multi-degree-of-freedom driving wheel and mobile platform.
  • the first aspect of the embodiment of the present application provides a multi-degree-of-freedom driving wheel, including:
  • a steering mechanism includes a first driving member that rotates around a first direction
  • An eccentric mechanism is connected to the first driving member and rotates in the first direction with the first driving member; the eccentric mechanism includes a second driving member that rotates in the second direction; and
  • a rotating wheel mechanism connected to the second driving member, the rotating wheel mechanism includes a connecting member, a third driving member fixed on the connecting member, and a rotating wheel assembly rotatably connected to the connecting member;
  • one end of the connecting member away from the rotating wheel assembly is connected to the second driving member and rotates with the second driving member, and the third driving member is used to drive the rotating wheel assembly to rotate.
  • the second aspect of the embodiment of the present application provides a multi-degree-of-freedom driving wheel, including:
  • Steering mechanism including first drive part
  • An eccentric mechanism is connected to the first driving member and rotates in the first direction with the first driving member; the eccentric mechanism includes a second driving member; and
  • a rotating wheel mechanism connected to the second driving member, the rotating wheel mechanism includes a connecting member, a third driving member fixed on the connecting member, and a rotating wheel assembly rotatably connected to the connecting member;
  • the third driving member is used to drive the rotating wheel assembly to rotate.
  • the third aspect of the embodiment of the present application provides a mobile platform, including: a platform part and a plurality of multi-degree-of-freedom driving wheels, and the multi-degree-of-freedom driving wheels are fixed on the platform part;
  • the multi-degree-of-freedom drive wheel includes:
  • a steering mechanism includes a first driving member that rotates around a first direction
  • An eccentric mechanism is connected to the first driving member and rotates in the first direction with the first driving member; the eccentric mechanism includes a second driving member that rotates in the second direction; and
  • a rotating wheel mechanism connected to the second driving member, the rotating wheel mechanism includes a connecting member, a third driving member fixed on the connecting member, and a rotating wheel assembly rotatably connected to the connecting member;
  • one end of the connecting member away from the rotating wheel assembly is connected to the second driving member and rotates with the second driving member, and the third driving member is used to drive the rotating wheel assembly to rotate.
  • the multi-degree-of-freedom drive wheel provided by the embodiment of the present application is connected to your second driving member through the wheel mechanism, so that the wheel machine
  • the second driving part is connected to the first driving part, so that the rotating wheel mechanism can rotate around the first direction, and then the rotating wheel mechanism can rotate around the first direction and/or the second direction, so that the rotating wheel mechanism can rotate around the first direction and/or the second direction.
  • the multi-degree-of-freedom driving wheel realizes multi-degree-of-freedom motion while reducing the rotational inertia of the runner assembly, making the control of the multi-degree-of-freedom driving wheel more sensitive.
  • Figure 1 is a three-dimensional schematic diagram of a mobile platform provided by an embodiment of the present application.
  • Figure 2 is a schematic front view of the mobile platform shown in Figure 1 in a first state
  • Figure 3 is a schematic top view of the second state of the mobile platform shown in Figure 1;
  • Figure 4 is a schematic top view of the mobile platform shown in Figure 1 in a third state
  • Figure 5 is a schematic top view of the fourth state of the mobile platform shown in Figure 1;
  • Figure 6 is a three-dimensional schematic view of the multi-degree-of-freedom driving wheel in the mobile platform shown in Figure 1;
  • Figure 7 is an exploded schematic diagram of the multi-degree-of-freedom driving wheel shown in Figure 6;
  • Figure 8 is an exploded schematic diagram of the steering mechanism in the multi-degree-of-freedom driving wheel shown in Figure 7;
  • Figure 9 is a schematic perspective view of the first driving element, the second driving element and the second adapter element in the multi-degree-of-freedom driving wheel shown in Figure 6;
  • Figure 10 is a schematic perspective view of the cooperation between the third driving member and the first gear in the wheel mechanism of the multi-degree-of-freedom driving wheel shown in Figure 6;
  • Figure 11 is an exploded schematic diagram of the multi-degree-of-freedom driving wheel shown in Figure 6;
  • Figure 12 is an exploded schematic view of the runner assembly shown in Figure 11;
  • Figure 13 is a perspective view of another embodiment of the multi-degree-of-freedom driving wheel shown in Figure 7;
  • Figure 14 is a schematic front view of a deformation of the transmission assembly in the rotation mechanism of the multi-degree-of-freedom driving wheel shown in Figure 6;
  • FIG. 15 is a schematic front view of a deformation of the rotation mechanism of the multi-degree-of-freedom driving wheel shown in FIG. 6 .
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • Figure 1 is a three-dimensional schematic view of the mobile platform provided by an embodiment of the present application.
  • Figure 2 is a schematic front view of the mobile platform shown in Figure 1 in a first state.
  • Figure 3 is a mobile platform shown in Figure 1.
  • FIG. 4 is a schematic top view of the mobile platform in the third state shown in FIG. 1
  • FIG. 5 is a schematic top view of the mobile platform in the fourth state shown in FIG. 1 .
  • the embodiment of the present application provides a new mobile platform 1000, which includes a platform part 200 and a plurality of multi-degree-of-freedom driving wheels 100 fixed on the platform part 200.
  • the plurality of multi-degree-of-freedom driving wheels 100 can drive the platform portion 200 forward, backward, in-situ rotation, lifting and other movement modes.
  • the mobile platform 1000 includes four multi-degree-of-freedom driving wheels 100 , so that the mobile platform 1000 can use a minimum number of multi-degree-of-freedom driving wheels 100 to achieve balance of the platform portion 200 .
  • the mobile platform 1000 may also include six, eight, etc. multi-degree-of-freedom driving wheels 100, which are not listed here.
  • the platform portion 200 may include an opposite top surface 201 and a bottom surface 202.
  • the bottom surface 202 may be provided with a fixed structure corresponding to a plurality of multi-degree-of-freedom driving wheels 100.
  • the multi-degree-of-freedom driving wheels 100 can pass through corresponding
  • the fixed structure is fixed to the platform part 200.
  • each fixed structure includes a plurality of first connection holes (not shown) provided on the bottom surface 202, and the multi-degree-of-freedom driving wheel 100 passes through the fixing member.
  • the multi-degree-of-freedom driving wheel 100 and the corresponding first connection hole are connected to the platform portion 200 .
  • Figure 6 is a perspective view of the multi-degree-of-freedom driving wheel in the mobile platform shown in Figure 1.
  • Figure 7 is an exploded schematic view of the multi-degree-of-freedom driving wheel shown in Figure 6.
  • the multi-degree-of-freedom driving wheel 100 may include a steering mechanism 10 , an eccentric mechanism 20 and a runner mechanism 30 .
  • the steering mechanism 10 may include a first driving member 11 that rotates in a first direction, and the eccentric mechanism 20 is connected to the first driving member 11 and rotates with the first driving member 11 in the first direction.
  • the eccentric mechanism 20 may include a second driving member 21 that rotates in the second direction, and the wheel mechanism 30 is connected to the second driving member 21 so that the wheel mechanism 30 can rotate in the second direction with the second driving member 21 .
  • the wheel mechanism 30 rotates around the first direction (as shown in FIGS. 2 and 3 ).
  • the rotating wheel mechanism 30 rotates around the second direction; when the first driving member 11 and the second driving member 21 are started at the same time, the rotating wheel mechanism 30 rotates around the first driving member 21 at the same time.
  • direction and second direction rotation as shown in Figure 4 and Figure 5.
  • the first direction is perpendicular to the bottom surface 202
  • the second direction is perpendicular to the first direction, that is, the second direction is parallel to on the bottom surface 202. It can be understood that the first direction is perpendicular to the bottom surface 202, so that the turning mechanism 30 can be turned in place. When the wheel mechanisms 30 of the multiple multi-degree-of-freedom driving wheels 100 turn simultaneously, the mobile platform 1000 can turn in place.
  • the second direction is perpendicular to the first direction, so that the wheel mechanism 30 can be closer to the bottom surface 202 or farther away from the bottom surface 202 .
  • the mobile platform 1000 can not only realize normal forward, backward, and rotation, but can also realize pitch, yaw, roll, and other functions to adjust the height of the center of gravity of the mobile platform 1000 Multiple sports modes.
  • the first direction may be arranged at an angle with the second direction.
  • the first direction can be perpendicular to the bottom surface 202, and the second direction can be set at an angle with the bottom surface 202; or, the first direction can be at an acute angle with the bottom surface 202, and the second direction can be parallel to the bottom surface 202, etc., which are not discussed here. List them one by one.
  • the multiple multi-degree-of-freedom driving wheels 100 can be moved closer to the center of the platform portion 200, so that the multiple multi-degree-of-freedom driving wheels 100 have a compact structure to adapt to Narrow space; multiple multi-degree-of-freedom driving wheels 100 can also be fully deployed, so that the stability of the mobile platform 1000 is very good.
  • the multiple multi-degree-of-freedom driving wheels 100 can also be in other matching forms, which are not listed here.
  • FIG. 8 is an exploded schematic diagram of the steering mechanism in the multi-degree-of-freedom driving wheel shown in FIG. 7 .
  • the steering mechanism 10 may include not only the first driving member 11 but also the first adapter member 12 .
  • the first drive member 11 is fixed to the bottom surface 202 of the platform portion 200 through the first adapter member 12 .
  • the first driving member 11 rotates around the first direction to turn the multi-degree-of-freedom driving wheel 100 in situ, so the first driving member 11 can rotate within a certain angle range, such as 360°.
  • the first driving member 11 may be one of a driving motor and a rotating cylinder, and is not specifically limited here.
  • the driving motor is a high-torque, low-speed driving motor, so that the first driving member 11 has reliable steering performance and accurate turning angle.
  • the first adapter 12 may include a first adapter plate 121 and a plurality of first adapter portions 122 fixed on one side surface of the first adapter plate 121 , wherein the first adapter plate 121 is arranged corresponding to the fixed structure and the first adapter plate 121 is disposed corresponding to the fixed structure.
  • the surface of an adapter plate 121 facing away from the first adapter portion 122 is in contact with the bottom surface 202 .
  • a plurality of second connection holes 1211 are provided on the edge of the first adapter plate 121.
  • the plurality of second connection holes 1211 on each first adapter plate 121 are connected to the plurality of first connection holes on a fixed structure.
  • One-to-one correspondence The first adapter plate 121 is sequentially inserted into the second connection hole 1211 and the corresponding first connection hole through fasteners such as screws, so that the first adapter plate 121 and the platform portion 200 are fixed.
  • the first adapter part 122 is provided with a first adapter hole 1221.
  • the first adapter hole 1221 passes through the first adapter hole 1221 and the first driving member 11 through a fixing member such as a screw, so that the first adapter 12 and the first driver member 11 are connected.
  • the first driving part 11 is fixedly connected.
  • the first adapter portion 122 is provided with an accommodating groove 1222 corresponding to the first adapter hole 1221.
  • the accommodating groove 1222 is connected with the first adapter hole 1221, and the fixing member, such as a screw, is inserted through the first adapter hole 1221.
  • the fixing member such as a screw
  • the first driving member 11 may include a first end surface 111 and a second end surface 112 arranged oppositely.
  • the rotating shaft of the first driving member 11 is connected to the second end surface 112.
  • the first end surface 111 is fixed to the first adapter 12 so that the A driving member 11 is connected to the platform portion 200 through a first adapter 12 .
  • the rotation axis of the first driving member 11 is perpendicular to the first adapter plate 121 .
  • the first driving member 11 further includes a plurality of second adapter portions 113 located on the first end surface 111 , and the second adapter portions 113 correspond to the first adapter portions 122 one-to-one.
  • the second adapter portion 113 is provided with a second adapter hole corresponding to the first adapter hole 1221 .
  • Adapter hole 1131, the first adapter 12 is inserted through the first adapter hole 1221 and the corresponding second adapter hole 1131 through the fixing member, so that the first adapter part 122 is connected to the second adapter part 113, Thus, the first adapter 12 and the first driving member 11 are fixed.
  • the steering mechanism 10 also includes a first shaft plate 13 parallel to the second end surface 112.
  • the first shaft plate 13 is coaxially arranged and fixedly connected to the rotating shaft of the first driving member 11.
  • the first driving member 11 can drive the first shaft plate 13. Rotate around the first direction.
  • the first shaft plate 13 can be connected with the eccentric mechanism 20 so that the eccentric mechanism 20 rotates around the first direction.
  • the first shaft disk 13 can be provided with a plurality of first shaft holes 131 , and the first shaft holes 131 can be penetrated through the first shaft holes 131 and the eccentric mechanism 20 through fixing members such as screws, so that the first shaft disk can 13 is connected to the eccentric mechanism 20, thereby realizing the connection between the eccentric mechanism 20 and the first driving member 11. It can be understood that the arrangement of the first shaft plate 13 makes the first driving member 11 and the eccentric mechanism 20 fixed with better reliability and stability.
  • FIG. 9 is a schematic perspective view of the first driving member, the second driving member and the second adapter member in the multi-degree-of-freedom driving wheel shown in FIG. 6 .
  • the eccentric mechanism 20 not only includes a second driving member 21 but also a second adapter member 22 .
  • the second driving member 21 is fixed to the first shaft plate 13 through the second adapter 22 so that the second driving member 21 and the first adapter 12 rotate in the first direction driven by the first driving member 11 .
  • the second driving member 21 rotates around the second direction to make the height of the wheel mechanism 30 adjustable in the direction perpendicular to the bottom surface 202 (that is, the vertical direction). Therefore, the second driving member 21 can be adjusted in a certain direction. It can be rotated within the included angle range, such as 180° or 360°, and there are no specific restrictions here.
  • the second driving member 21 may be one of a driving motor and a rotating cylinder, and is not specifically limited here.
  • the driving motor is a high-torque, low-speed driving motor, so that the second driving member 21 has reliable steering performance and accurate turning angle.
  • the second driving member 21 may include a third end surface 211 and a fourth end surface 212 arranged oppositely.
  • the third end surface 211 is fixed to the second adapter member 22 to realize the fixation of the second driving member 21 and the second adapter member 22 .
  • the rotating shaft of the second driving member 21 is connected to the third end surface 211 .
  • the third end surface 211 is provided with a plurality of first end holes 2111, and the second driving member 21 passes through the first end holes 2111 and the second adapter member 22 through fixing members such as screws to realize the connection between the second driving member 21 and the second adapter member 22.
  • the connection of the second adapter 22 is provided with a plurality of first end holes 2111, and the second driving member 21 passes through the first end holes 2111 and the second adapter member 22 through fixing members such as screws to realize the connection between the second driving member 21 and the second adapter member 22.
  • the second adapter 22 includes a second adapter plate 221 and a third adapter plate 222 vertically connected to the second adapter plate 221.
  • the second adapter plate 221 is fixedly connected to the first shaft plate 13.
  • the plate 222 is fixed to the second driving member 21 .
  • the second adapter plate 221 is provided with a plurality of second shaft holes 2211 , and the plurality of second shaft holes 2211 correspond to the plurality of first shaft holes 131 one by one.
  • the second adapter plate 221 passes through the second shaft hole 2211 and the corresponding first shaft hole 131 through a fastener such as a screw, so that the second adapter plate 221 is fixedly connected to the first shaft plate 13, thereby realizing the connection between the eccentric mechanism 20 and the first shaft plate 13. Fixing of the first driving member 11.
  • the third adapter plate 222 is provided with a plurality of second end holes 2221, and the plurality of second end holes 2221 respectively correspond to the plurality of first end holes 2111.
  • the third adapter plate 222 passes through the second end hole 2221 and the corresponding first end hole 2111 through a fastener such as a screw, so that the third adapter plate 222 and the second driving member 21 are fixed, so that the third adapter plate 222 and the second driving member 21 are fixed.
  • the connection of the second driving member 21 is provided with a plurality of second end holes 2221, and the plurality of second end holes 2221 respectively correspond to the plurality of first end holes 2111.
  • the third adapter plate 222 is provided with a through hole 2222, and the through hole 2222 can be used to receive the rotating shaft of the second driving member 21.
  • the wheel mechanism 30 is located on the side of the third adapter plate 222 away from the second driving member 21 and is fixed to the rotating shaft of the second driving member 21 . fixed, so that the wheel mechanism 30 can rotate in the second direction driven by the second driving member 21 .
  • the eccentric mechanism 20 also includes a second shaft plate 23 parallel to the third end surface 211 .
  • the second shaft disk 23 is coaxially arranged and fixedly connected to the rotating shaft of the second driving member 21 , and the second shaft disk 23 can be received in the through hole 2222 .
  • the second driving member 21 can drive the second shaft plate 23 to rotate around the second direction.
  • the second shaft plate 23 can be connected with the wheel mechanism 30 so that the eccentric mechanism 20 rotates around the first direction.
  • the second shaft plate 23 can be provided with a plurality of third shaft holes 231, and the third shaft holes 231 can be penetrated through the third shaft holes 231 and the runner mechanism 30 through fixing members such as screws, so that the second shaft The disk 23 is connected to the wheel mechanism 30, thereby realizing the connection between the wheel mechanism 30 and the second driving member 21. It can be understood that the arrangement of the second shaft plate 23 makes the reliability and stability of fixing the first driving member 11 and the eccentric mechanism 20 better.
  • Figure 10 is a schematic perspective view of the third driving member cooperating with the first gear in the wheel mechanism of the multi-degree-of-freedom drive wheel shown in Figure 6.
  • Figure 11 is a multi-degree-of-freedom wheel mechanism shown in Figure 6.
  • the wheel mechanism 30 may include a connecting member 31 and a wheel assembly 32 rotatably connected to one end of the connecting member 31.
  • the end of the connecting member 31 away from the wheel assembly 32 may be connected to the second driving member 21, so that the connecting member 31 is connected to the connecting member 31.
  • the wheel assembly 32 on the member 31 rotates around the second direction.
  • one end of the connecting member 31 can be fixed with the rotating shaft of the second driving member 21 or with the second shaft plate 23 , so that the other end of the connecting member 31 (ie, the wheel assembly 32 ) can be rotated with the second driving member 21
  • the rotating axis rotates around the center of the circle in the second direction, so that the rotating wheel assembly 32 can be close to or away from the bottom surface 202 of the platform portion 200, that is, the adjustment of the height of the rotating wheel assembly 32 in the first direction is changed.
  • FIG. 12 is an exploded schematic diagram of the runner assembly shown in FIG. 11 .
  • the wheel assembly 32 includes a rim 321 and an elastic sleeve 322 sleeved on the rim 321 .
  • the rim 321 is rotatably connected to the connecting piece 31 so that the rim 321 can rotate relative to the connecting piece 31 .
  • the elastic sleeve 322 is set on the rim 321 to improve the vibration damping performance of the runner assembly 32 .
  • the elastic sleeve 322 may be made of rubber.
  • the rim 321 may include a shaft portion 3211 and an outer ring portion 3212 arranged coaxially, and spokes 3213 connecting the shaft portion 3211 and the outer ring portion 3212.
  • the two ends of the spokes 3213 are used to support the shaft part 3211 and the outer ring part 3212 to reduce the weight of the rim 321.
  • the shaft part 3211, the outer ring part 3212 and the spokes 3213 are integrally formed to facilitate processing and casting and reduce the assembly process.
  • the spokes 3213 can be detachably connected to the shaft portion 3211 and the outer ring portion 3212 to facilitate later maintenance.
  • the surface of the outer ring portion 3212 is provided with a first holding structure 3214
  • the inner surface of the elastic sleeve 322 is provided with a second holding structure 3221 corresponding to the first holding structure 3214
  • the elastic sleeve 322 is set on the rim 321.
  • the outer surface of the elastic sleeve 3214 is connected with the second clamping structure 3221 to improve the reliability of the connection between the elastic sleeve 322 and the rim 321 .
  • first holding structure 3214 can be one of a bump structure and a groove structure
  • second holding structure 3221 can be the other one of a bump structure and a groove structure.
  • the bump mechanism holds and receives In the groove structure, the first clamping structure 3214 and the second clamping structure 3221 are clamped and connected, thereby improving the reliability of the connection between the rim 321 and the elastic sleeve 322.
  • the runner mechanism 30 can be a non-powered mechanism, that is, the runner mechanism 30 can be driven by external force or other driving structures to enable the runner assembly 32 to rotate.
  • the wheel mechanism 30 may also include a third driving member 33, which may be fixed on the connecting member 31 for driving the wheel set. Piece 32 rotates.
  • the third driving member 33 can be fixed to an end of the connecting member 31 away from the rotating wheel assembly 32, so that the third driving member 33 is separated from the rotating wheel assembly 32.
  • the driving structure is separated from the rotating wheel assembly 32, so that the rotating member 33 is separated from the rotating wheel assembly 32.
  • the wheel assembly 32 has a simple structure and is easy to install.
  • the third driving member 31 is brought close to the platform portion 200 so that the weight of the vehicle body is concentrated on the platform portion 200 to reduce the moment of inertia of the wheel assembly 32 and enable multi-degree-of-freedom driving.
  • the wheel 100's control is more responsive.
  • the rotating shaft of the third driving member 33 is coaxially arranged with the rotating shaft of the second driving member 21 , so that the third driving member 33 can rotate driven by the second driving member 21 . It can be understood that such an arrangement makes the connection between the runner mechanism and the eccentric mechanism more compact, and the center is closer to the platform portion 200 .
  • the runner mechanism 30 may also include a transmission assembly 34.
  • the transmission assembly 34 is disposed on the connecting member 31 and is connected to the third driving member 33 and the runner assembly 32 respectively, so that the third driving member 33 can be driven by the transmission assembly 34.
  • the wheel assembly 32 rotates.
  • the third driving member 33 can be fixed to the second driving member 21 through the second shaft plate 23 , and can be rotated in the second direction driven by the second driving member 21 .
  • the connecting member 31 is fixed to an end of the third driving member 33 away from the second shaft plate 23 , so that the connecting member 31 can rotate synchronously with the third driving member 33 .
  • the rotating shaft of the third driving member 33 can be coaxially arranged with the rotating shaft of the second driving member 21.
  • the structures of the third driving member 33 and the second driving member 21 are compact, which facilitates the multi-degree-of-freedom driving wheel 100.
  • the circuit wiring prevents the eccentric movement of the wheel mechanism 30 when the second driving member 21 rotates in the second direction.
  • the third driving member 33 may include a fifth end surface 331 and a sixth end surface 332.
  • the rotating shaft of the third driving member 33 is connected to the sixth end surface 332.
  • the fifth end surface 331 may be connected to the second shaft plate. 23 is fixed, so that the third driving member 33 and the second driving member 21 are fixedly connected.
  • the connecting member 31 is provided with a first through hole 311 , and the rotating shaft of the third driving member 33 can be inserted into the first through hole 311 .
  • the connecting member 31 can be fixed to the second driving member 21 through the second shaft plate 23 and can rotate in the second direction driven by the second driving member 21 .
  • the third driving member 33 is fixed on the side of the connecting member 31 away from the second shaft plate 23 , and the rotating shaft of the third driving member 33 is coaxially arranged with the rotating shaft of the second driving member 21 .
  • Such an arrangement not only makes the structure of the third driving member 33 and the second driving member 21 compact and facilitates the circuit wiring of the multi-degree-of-freedom driving wheel 100, but also avoids the wheel mechanism when the second driving member 21 rotates around the second direction. 30 Eccentric movement occurs.
  • the third driving member 33 may include a fifth end surface 331 and a sixth end surface 332.
  • the rotating shaft of the third driving member 33 is connected to the sixth end surface 332.
  • the fifth end surface 331 may be fixed to the connecting member 31, so that the third driving member 33 can be fixed to the connecting member 31.
  • 33 is fixedly connected to the connecting piece 31.
  • FIG. 13 is a perspective view of another embodiment of the multi-degree-of-freedom driving wheel shown in FIG. 7 .
  • the transmission assembly 34 may include a first gear 341 and a second gear 342 .
  • the first gear 341 can be fixed to the rotating shaft of the third driving member 33 and rotate with the rotating shaft of the third driving member 33 .
  • the second gear 342 is rotatably connected to the connecting member 31 and fixed with the shaft 3211 of the runner assembly 32 so that the runner assembly 32 can rotate with the second gear 342 .
  • the first gear 341 can mesh with the second gear 342, so that the third driving member 33 can mesh with the second gear 342 through the first gear 341 and drive the wheel assembly 32 to rotate.
  • the diameters of the first gear 341 and the second gear 342 can be designed according to requirements. Specifically, when the second When the diameter of the gear 342 is smaller than the diameter of the first gear 341, the rotation speed of the second gear 342 is greater than the rotation speed of the first gear 341; when the diameter of the second gear 342 is greater than the diameter of the first gear 341, the rotation speed of the second gear 342 is less than The diameter of the first gear 341. That is, the rotation speed of the wheel assembly 32 can be adjusted by adjusting the diameters of the first gear 341 and the second gear 342 .
  • the transmission assembly 34 may also include an intermediate piece 343, which can mesh with the first gear 341 and the second gear 342 respectively, so that the first gear 341 can mesh with the second gear 342 through the middle piece 343 to drive the second gear. 342 rotates, thereby enabling the third driving member 33 to drive the rotating wheel assembly 32 to rotate.
  • the intermediate piece 343 may be one of a single gear, a gear set, or a toothed belt 346 .
  • the middle piece 343 is rotatably connected to the connecting rod and meshes with the first gear 341 and the second gear 342 respectively, so that the first gear 341 meshes with the second gear 342 .
  • the intermediate piece 343 is a gear set
  • the plurality of gears in the gear set can be rotatably connected to the connecting piece 31 respectively.
  • the intermediate piece 343 can not only mesh the first gear 341 with the second gear 342 but also adjust the first gear 341 The transmission ratio between the second gear 342 and the second gear 342 .
  • the intermediate member 343 is a toothed belt 346
  • the intermediate member 343 is sleeved on the first gear 341 and the second gear 342, so that the first gear 341 can mesh with the second gear 342.
  • the arrangement of the middle piece 343 can adjust the length of the connecting piece 31 and thereby adjust the range of movement of the wheel assembly 32 in the first direction (that is, the vertical direction).
  • the wheel mechanism 30 may also include a bearing 35.
  • the end of the connecting member 31 connected to the second gear 342 may be provided with a mounting hole 312 for fixing the bearing 35, and the bearing 35 is installed in the fixing hole.
  • the second gear 342 is coaxially arranged with the bearing 35 and fixedly connected to reduce the friction between the second gear 342 and the connecting piece 31 .
  • the transmission assembly 34 may include a first transmission wheel 344, a second transmission wheel 345, and a belt 346 sleeved on the first transmission wheel 344 and the second transmission wheel 345.
  • the first transmission wheel 344 is fixed to the rotating shaft of the third driving member 33
  • the second transmission wheel 345 is rotatably connected to the connecting member 31 and fixed to the wheel assembly 32
  • the first transmission wheel 344 drives the second transmission wheel 345 through the belt 346 Rotate, thereby driving the wheel assembly 32 to rotate.
  • the transmission assembly 34 is arranged so that the length of the connecting member 31 can be freely adjusted according to user needs, thereby allowing the movable range of the runner assembly 32 to be adjusted in the first direction (that is, the vertical direction).
  • FIG. 15 is a schematic front view of a deformation of the rotation mechanism of the multi-degree-of-freedom drive wheel shown in FIG. 6 .
  • the third driving member 33 is fixed to one end of the connecting member 31 where the runner assembly 32 is disposed; the rotating shaft of the third driving member 33 is coaxially arranged and fixed with the runner assembly 32, so that the third driving member 33 drives The wheel assembly 32 rotates.
  • the length of the connecting piece 31 can be freely adjusted according to needs without adding a new transmission structure.
  • the multi-degree-of-freedom driving wheel 100 provided by the embodiment of the present application is connected to your second driving member 21 through the rotating wheel mechanism 30, so that the rotating wheel mechanism 30 can rotate around the second direction; it is connected to the first driving member through the second driving member 21.
  • the component 11 enables the wheel mechanism 30 to rotate around the first direction, thereby enabling the wheel mechanism 30 to rotate around the first direction and/or the second direction.
  • the mobile platform 1000 can realize various traveling modes such as forward, backward, rotation, pitch, yaw, and roll.

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Abstract

本申请涉及一种多自由度驱动轮及移动平台。多自由度驱动轮包括转向机构、偏心机构和转轮机构，转向机构包括绕第一方向转动的第一驱动件；偏心机构连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括绕第二方向转动的第二驱动件；转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；其中所述连接件远离所述转轮组件的一端连接于所述第二驱动件并随所述第二驱动件转动，所述第三驱动件用于驱动所述转轮组件转动。通过上述方式，使多自由度驱动轮实现多自由度运动的同时，减小转轮组件的转动惯量，使得多自由度驱动轮的控制更加灵敏。

Description

多自由度驱动轮及移动平台 【技术领域】
本申请涉及移动平台技术领域，具体是涉及一种多自由度驱动轮及移动平台。
【背景技术】
目前的移动平台多采用两驱动轮与两万向轮组合、或四麦克纳姆轮等中的一种，以实现移动平台的多自由度运动。
【发明内容】
本申请提供一种多自由度驱动轮及移动平台。
本申请实施例第一方面提供了一种多自由度驱动轮，包括：
转向机构，包括绕第一方向转动的第一驱动件；
偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括绕第二方向转动的第二驱动件；以及
转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；
其中，所述连接件远离所述转轮组件的一端连接于所述第二驱动件并随所述第二驱动件转动，所述第三驱动件用于驱动所述转轮组件转动。
本申请实施例第二方面提供了一种多自由度驱动轮，包括：
转向机构，包括第一驱动件；
偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括第二驱动件；以及
转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；
其中，所述第三驱动件用于驱动所述转轮组件转动。
本申请实施例第三方面提供了一种移动平台，包括：平台部以及多个多自由度驱动轮，所述多自由度驱动轮固定于所述平台部上；
其中，所述多自由度驱动轮包括：
转向机构，包括绕第一方向转动的第一驱动件；
偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括绕第二方向转动的第二驱动件；以及
转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；
其中，所述连接件远离所述转轮组件的一端连接于所述第二驱动件并随所述第二驱动件转动，所述第三驱动件用于驱动所述转轮组件转动。
本申请实施例提供的多自由度驱动轮，通过转轮机构连接于你第二驱动件，使得转轮机 构能够绕第二方向转动；通过第二驱动件连接于第一驱动件，使得转轮机构能够绕第一方向转动，进而使得转轮机构能够绕第一方向和/或第二方向转动，使多自由度驱动轮实现多自由度运动的同时，减小转轮组件的转动惯量，使得多自由度驱动轮的控制更加灵敏。
【附图说明】
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的移动平台的立体示意图；
图2是图1所示的移动平台第一状态的主视示意图；
图3是图1所示的移动平台第二状态的俯视示意图；
图4是图1所示的移动平台第三状态的俯视示意图；
图5是图1所示的移动平台第四状态的俯视示意图；
图6是图1所示的移动平台中多自由度驱动轮的立体示意图；
图7是图6所示的多自由度驱动轮的爆炸示意图；
图8是图7所示的多自由度驱动轮中转向机构的爆炸示意图；
图9是图6所示的多自由度驱动轮中第一驱动件、第二驱动件与第二转接件的立体示意图；
图10是图6所示的多自由度驱动轮的转轮机构中第三驱动件与第一齿轮配合的立体示意图；
图11是图6所示的多自由度驱动轮的爆炸示意图；
图12是图11所示的转轮组件的爆炸示意图；
图13是图7所示的多自由度驱动轮另一实施例的立体示意图；
图14是图6所示的多自由度驱动轮的轮转机构中传动组件一变形的主视示意图；
图15是图6所示的多自由度驱动轮的轮转机构一变形的主视示意图。
【具体实施方式】
下面结合附图和实施例，对本申请作进一步的详细描述。特别指出的是，以下实施例仅用于说明本申请，但不对本申请的范围进行限定。同样的，以下实施例仅为本申请的部分实施例而非全部实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
目前的移动平台多采用两驱动轮与两万向轮组合、全向轮、或四麦克纳姆轮以实现移 动平台的自由转向和驱动。具体地，两驱动轮与两万向轮组合通过两驱动轮不同转速实现转向，但是该平台无法实现自转运动，也即在狭窄空间中转向受影响较大。全向轮平台无论是三全向轮还是四全向轮，为了能达成多种运动模式需要将轮子布置成三角形或叉型，这样相较于常规的底盘，所需要的空间较大。麦克纳姆轮虽然能解决上述所有的运动模式，但也仅限在一个平面内进行运动，无法达成空间运动，并且相较于常规的轮胎，麦克纳姆轮的效率较低。鉴于此，实有必要提供一种新的多自由度驱动轮及移动平台。
请参照图1至图5，图1是本申请实施例提供的移动平台的立体示意图，图2是图1所示的移动平台第一状态的主视示意图，图3是图1所示的移动平台第二状态的俯视示意图，图4是图1所示的移动平台第三状态的俯视示意图，图5是图1所示的移动平台第四状态的俯视示意图。本申请实施例提供一种新的移动平台1000，包括平台部200及固定于平台部200的多个多自由度驱动轮100。多个多自由度驱动轮100可带动平台部200前进、后退、原地转动、升降等多个运动方式。本实施例中，移动平台1000包括四个多自由度驱动轮100，使得移动平台1000可使用最少数量的多自由度驱动轮100实现平台部200的平衡。在其他实施例中，移动平台1000还可以包括六个、八个等多自由度驱动轮100，在此不一一列举。
具体地，平台部200可包括相背的顶面201和底面202，底面202上可设有与多个多自由度驱动轮100一一对应的固定结构，多自由度驱动轮100可通过对应的固定结构与平台部200固定，具体地，每个固定结构(图未示)包括多个设置于底面202上的第一连接孔(图未示)，多自由度驱动轮100通过固定件穿过多自由度驱动轮100与对应的第一连接孔，实现与平台部200的连接。
请一并参照图6和图7，图6是图1所示的移动平台中多自由度驱动轮的立体示意图，图7是图6所示的多自由度驱动轮的爆炸示意图。多自由度驱动轮100可包括转向机构10、偏心机构20和转轮机构30。其中，转向机构10可包括绕第一方向转动的第一驱动件11，偏心机构20连接于第一驱动件11上并随第一驱动件11绕第一方向转动。偏心机构20可包括绕第二方向转动的第二驱动件21，转轮机构30连接于第二驱动件21，使得转轮机构30能够随第二驱动件21绕第二方向转动。
需要说明的是，本申请中的术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括至少一个该特征。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
可以理解地，当第一驱动件11启动且第二驱动件21关闭时，转轮机构30绕第一方向转动(如图2和图3所示)。当第一驱动件11关闭且第二驱动件21启动时，转轮机构30绕第二方向转动；当第一驱动件11、第二驱动件21同时启动时，转轮机构30同时绕第一方向、第二方向转动(如图4和图5所示)。当第一驱动件11、第二驱动件21同时关闭时，转轮机构30的状态保持不变。
本实施例中，第一方向垂直于底面202，第二方向垂直于第一方向，也即第二方向平行 于底面202。可以理解地，第一方向垂直于底面202，可实现转轮机构30的原地转向。当多个多自由度驱动轮100的转轮机构30同时转向时，移动平台1000可原地转向。第二方向垂直于第一方向，可实现转轮机构30靠近底面202或者远离底面202。当多个多自由度驱动轮100的转轮机构30相互配合，移动平台1000不仅可实现正常的前进、后退、自转，还可实现俯仰、横摆、横滚等其他调节移动平台1000重心高度的多种运动模式。在其他实施例中，第一方向可与第二方向成夹角设置。譬如，第一方向可垂直于底面202，第二方向可与底面202成夹角设置；或者，第一方向可与底面202成锐角夹角，第二方向平行于底面202等等，在此不一一列举。
可以理解地，通过转向机构10与偏心机构20相结合的方式，可使多个多自由度驱动轮100向平台部200的中心靠拢，以使多个多自由度驱动轮100结构紧凑，以适应狭窄空间；还可是多个多自由度驱动轮100完全展开，以使移动平台1000的稳定性很好。当然，多个多自由度驱动轮100还可以是其他配合形式，在此不一一列举。
请参照图8，图8是图7所示的多自由度驱动轮中转向机构的爆炸示意图。具体地，转向机构10不仅可包括第一驱动件11，还可包括第一转接件12，第一驱动件11通过第一转接件12与平台部200的底面202固定。
可以理解地，第一驱动件11绕第一方向转动，用于使多自由度驱动轮100原地转向，因此该第一驱动件11可在一定夹角范围内转动即可，譬如360°。具体地，第一驱动件11可以是驱动电机、旋转气缸中的一种，在此不做具体限制。当第一驱动件11为驱动电机时，驱动电机为大扭矩、低转速驱动电机，以使第一驱动件11转向性能可靠、转角准确。
第一转接件12可包括第一转接板121以及固定于第一转接板121一侧表面的多个第一转接部122，其中第一转接板121对应于固定结构设置且第一转接板121背离第一转接部122的表面与底面202贴合。具体地，第一转接板121的边缘设有多个第二连接孔1211，每个第一转接板121上的多个第二连接孔1211与一个固定结构上的多个第一连接孔一一对应。第一转接板121通过固定件譬如螺钉依次穿设于第二连接孔1211及对应的第一连接孔中，使得第一转接板121与平台部200固定。
第一转接部122上设有第一转接孔1221，第一转接孔1221通过固定件譬如螺钉穿过第一转接孔1221及第一驱动件11，使得第一转接件12与第一驱动件11固定连接。
进一步地，第一转接部122上设有与第一转接孔1221一一对应的容置槽1222，容置槽1222与第一转接孔1221连通，固定件譬如螺钉穿设于第一转接孔1221中且固定件的端部收容于容置腔中，使得固定件的端部不凸出于容置腔，以使固定件与第一转接部122的连接结构紧凑。
第一驱动件11可包括相背设置的第一端面111和第二端面112，第一驱动件11的转轴连接于第二端面112，第一端面111与第一转接件12固定，使得第一驱动件11通过第一转接件12与平台部200连接。其中，第一驱动件11的转轴垂直于第一转接板121。
具体地，第一驱动件11还包括位于第一端面111上的多个第二转接部113，第二转接部113与第一转接部122一一对应。第二转接部113上设有对应于第一转接孔1221的第二 转接孔1131，第一转接件12通过固定件穿设于第一转接孔1221及对应的第二转接孔1131中，使得第一转接部122连接于第二转接部113，进而使得第一转接件12与第一驱动件11固定。
转向机构10还包括平行与第二端面112的第一轴盘13，第一轴盘13与第一驱动件11的转轴同轴设置并固定连接，第一驱动件11可驱动第一轴盘13绕第一方向转动。第一轴盘13可与偏心机构20连接，使得偏心机构20绕第一方向转动。
具体地，第一轴盘13上可设有多个第一轴孔131，第一轴孔131可通过固定件譬如螺钉穿设于第一轴孔131及偏心机构20上，使得第一轴盘13与偏心机构20连接，进而实现偏心机构20与第一驱动件11的连接。可以理解地，第一轴盘13的设置，使得第一驱动件11与偏心机构20固定的可靠性、稳定性更好。
请参照图9，图9是图6所示的多自由度驱动轮中第一驱动件、第二驱动件与第二转接件的立体示意图。偏心机构20不仅包括第二驱动件21，还包括第二转接件22。第二驱动件21通过第二转接件22与第一轴盘13固定，使得第二驱动件21及第一转接件12在第一驱动件11的带动下绕第一方向转动。
可以理解地，第二驱动件21绕第二方向转动，用于使转轮机构30在垂直于底面202的方向(也即竖直方向)高度可调节，因此该第二驱动件21可在一定夹角范围内转动即可，譬如180°或者360°，在此不做具体限制。具体地，第二驱动件21可以是驱动电机、旋转气缸中的一种，在此不做具体限制。当第二驱动件21为驱动电机时，驱动电机为大扭矩、低转速驱动电机，以使第二驱动件21转向性能可靠、转角准确。
第二驱动件21可包括相背设置的第三端面211与第四端面212，第三端面211与第二转接件22固定，实现第二驱动件21与第二转接件22的固定。其中，第二驱动件21的转轴连接于第三端面211。
具体地，第三端面211上设有多个第一端孔2111，第二驱动件21通过固定件譬如螺钉穿过第一端孔2111及第二转接件22，实现第二驱动件21与第二转接件22的连接。
第二转接件22包括第二转接板221及垂直连接于第二转接板221的第三转接板222，第二转接板221与第一轴盘13固定连接，第三转接板222与第二驱动件21固定。
具体地，第二转接板221上设有多个第二轴孔2211，多个第二轴孔2211与多个第一轴孔131一一对应。第二转接板221通过固定件譬如螺钉穿过第二轴孔2211及对应的第一轴孔131，使得第二转接板221与第一轴盘13的固定连接，进而实现偏心机构20与第一驱动件11的固定。
第三转接板222上设有多个第二端孔2221，多个第二端孔2221分别与多个第一端孔2111一一对应。第三转接板222通过固定件譬如螺钉穿过第二端孔2221及对应的第一端孔2111，使得第三转接板222与第二驱动件21固定，实现第三转接板222与第二驱动件21的连接。
第三转接板222上开设有贯穿孔2222，贯穿孔2222可用于收容第二驱动件21的转轴。转轮机构30位于第三转接板222背离第二驱动件21的一侧，并与第二驱动件21的转轴固 定，使得转轮机构30能够在第二驱动件21的带动下绕第二方向转动。
偏心机构20还包括平行与第三端面211的第二轴盘23。第二轴盘23与第二驱动件21的转轴同轴设置并固定连接，第二轴盘23可收容于贯穿孔2222中。第二驱动件21可驱动第二轴盘23绕第二方向转动。第二轴盘23可与转轮机构30连接，使得偏心机构20绕第一方向转动。
具体地，第二轴盘23上可设有多个第三轴孔231，第三轴孔231可通过固定件譬如螺钉穿设于第三轴孔231及转轮机构30上，使得第二轴盘23与转轮机构30连接，进而实现转轮机构30与第二驱动件21的连接。可以理解地，第二轴盘23的设置，使得第一驱动件11与偏心机构20固定的可靠性、稳定性更好。
请参照图10和图11，图10是图6所示的多自由度驱动轮的转轮机构中第三驱动件与第一齿轮配合的立体示意图，图11是图6所示的多自由度驱动轮的爆炸示意图。转轮机构30可包括连接件31及转动连接于连接件31一端的转轮组件32，连接件31远离转轮组件32的一端可与第二驱动件21连接，使得连接件31及连接于连接件31上的转轮组件32绕第二方向转动。
具体地，连接件31的一端可与第二驱动件21的转轴固定、或与第二轴盘23固定，使得连接件31的另一端(也即转轮组件32)能够以第二驱动件21的转轴为圆心绕第二方向转动，使得转轮组件32能够靠近或者远离平台部200的底面202，也即改变转轮组件32在第一方向上高度的调节。
请参照图12，图12是图11所示的转轮组件的爆炸示意图。转轮组件32包括轮辋321及套设于轮辋321上的弹性套322。轮辋321与连接件31转动连接，使得轮辋321能够相对连接件31转动。弹性套322套设于轮辋321上，用于提高转轮组件32的减振性能。具体地，弹性套322的材质可为橡胶。
轮辋321可包括同轴设置的轴部3211和外圈部3212、以及连接轴部3211与外圈部3212的辐条3213。辐条3213的两端用于支撑轴部3211与外圈部3212，以减轻轮辋321的重量。本实施例中，轴部3211、外圈部3212与辐条3213一体成型，以方便加工铸造，较少组装工序。在其他实施方式中，辐条3213可与轴部3211、外圈部3212可拆卸连接，以方便后期维护。
具体地，外圈部3212的表面设有第一卡持结构3214，弹性套322的内表面设有对应于第一卡持结构3214的第二卡持结构3221，弹性套322套设于轮辋321的外表面且第一卡持结构3214与第二卡持结构3221卡持连接，以提高弹性套322与轮辋321连接的可靠性。
进一步地，第一卡持结构3214可为凸块结构、凹槽结构中的一者，第二卡持结构3221可为凸块结构、凹槽结构中的另一者，凸块机构卡持收容于凹槽结构中，使得第一卡持结构3214与第二卡持结构3221卡持连接，进而提高轮辋321与弹性套322连接的可靠性。
请继续参照7和图11，可以理解地，转轮机构30可为无动力机构，也即转轮机构30可在外力作用下或者其他驱动结构的驱动下，使得转轮组件32能够转动。本实施例中，转轮机构30还可包括第三驱动件33，第三驱动件33可固定于连接件31上，用于驱动转轮组 件32转动。
可选地，第三驱动件33可固定于连接件31远离转轮组件32的一端，使得第三驱动件33与转轮组件32分离，一方面使得驱动结构与转轮组件32分离，使得转轮组件32结构简单、安装方便，另一方面使得第三驱动件31靠近平台部200，使得车身的重量集中于平台部200上，以减小转轮组件32的转动惯量，使得多自由度驱动轮100的控制更加灵敏。
本实施例中，第三驱动件33的转轴与所述第二驱动件21的转轴同轴设置，使得所述第三驱动件33能够在第二驱动件21的带动下转动。可以理解地，如此设置，使得转轮机构与偏心机构的连接更加紧凑，中心更靠近平台部200。
具体地，转轮机构30还可包括传动组件34，传动组件34设置于连接件31上并分别连接于第三驱动件33与转轮组件32，使得第三驱动件33能够通过传动组件34驱动转轮组件32转动。
可选地，第三驱动件33可通过第二轴盘23与第二驱动件21固定，并可在第二驱动件21的带动下绕第二方向转动。连接件31固定于第三驱动件33背离第二轴盘23的一端，使得连接件31能够与第三驱动件33同步转动。本实施例中，第三驱动件33的转轴可与第二驱动件21的转轴同轴设置，一方面使第三驱动件33与第二驱动件21的结构紧凑，方便多自由度驱动轮100电路走线，另一方面避免第二驱动件21绕第二方向转动时转轮机构30发生偏心运动。
请继续参照图10，具体地，第三驱动件33可包括第五端面331与第六端面332，第三驱动件33的转轴连接于第六端面332，第五端面331可与第二轴盘23固定，使得第三驱动件33与第二驱动件21固定连接。其中，连接件31上设有第一通孔311，第三驱动件33的转轴可穿设于第一通孔311中。
在又一实施例中，连接件31可通过第二轴盘23与第二驱动件21固定，并可在第二驱动件21的带动下绕第二方向转动。第三驱动件33固定于连接件31背离第二轴盘23的一侧，且第三驱动件33的转轴与第二驱动件21的转轴同轴设置。如此设置，一方面使第三驱动件33与第二驱动件21的结构紧凑，方便多自由度驱动轮100电路走线，另一方面避免第二驱动件21绕第二方向转动时转轮机构30发生偏心运动。
具体地，第三驱动件33可包括第五端面331与第六端面332，第三驱动件33的转轴连接于第六端面332，第五端面331可与连接件31固定，使得第三驱动件33与连接件31固定连接。
请继续参照图11和图13，图13是图7所示的多自由度驱动轮另一实施例的立体示意图。本实施例中，传动组件34可包括第一齿轮341和第二齿轮342。其中，第一齿轮341可与第三驱动件33的转轴固定并随第三驱动件33的转轴转动。第二齿轮342转动连接于连接件31上并与转轮组件32的轴部3211固定，使得转轮组件32能够随第二齿轮342转动。其中，第一齿轮341可与第二齿轮342啮合，使得第三驱动件33能够通过第一齿轮341与第二齿轮342啮合，驱动转轮组件32转动。
可以理解地，第一齿轮341与第二齿轮342的直径可根据需求设计。具体地，当第二 齿轮342的直径小于第一齿轮341的直径，则第二齿轮342的转速大于第一齿轮341的转速；当第二齿轮342的直径大于第一齿轮341的直径，则第二齿轮342的转速小于第一齿轮341的直径。也即，可通过调节第一齿轮341、第二齿轮342的直径，调节转轮组件32的转速。
请参照图11，进一步地，第一齿轮341与第二齿轮342间隔设置，也即第一齿轮341不能够直接驱动第二齿轮342。传动组件34还可包括中间件343，中间件343可分别与第一齿轮341、第二齿轮342箱啮合，使得第一齿轮341可通过中间件343与第二齿轮342啮合，以驱动第二齿轮342转动，进而使得第三驱动件33能够驱动转轮组件32转动。
具体地，中间件343可以是单个齿轮、齿轮组或者齿形皮带346中的一种。当中间件343为单个齿轮时，中间件343转动连接于连接杆上并分别与第一齿轮341、第二齿轮342啮合，以使第一齿轮341与第二齿轮342相啮合。当中间件343为齿轮组时，齿轮组中的多个齿轮可分别转动连接于连接件31，中间件343不仅可使第一齿轮341与第二齿轮342相啮合，还能够调节第一齿轮341与第二齿轮342之间的传动比。当中间件343为齿形皮带346时，中间件343套设于第一齿轮341与第二齿轮342上，使得第一齿轮341可与第二齿轮342相啮合。
可以理解地，中间件343的设置，可调节连接件31的长度，进而调整转轮组件32在第一方向(也即竖直方向)上的活动范围。其中，连接件31的长度越大，多自由度驱动轮100在第一方向上的可活动范围越大；连接件31的长度越小，多自由度驱动轮100在第一方向上的可互动范围越小。
可选地，转轮机构30还可包括轴承35，连接件31连接第二齿轮342的一端可设有用于固定轴承35的安装孔312，轴承35安装于固定孔中。第二齿轮342与轴承35同轴设置并固定连接，以减小第二齿轮342与连接件31之间的摩擦。
请参照图14，图14是图6所示的多自由度驱动轮的轮转机构中传动组件一变形的主视示意图。在又一个实施例中，传动组件34可包括第一传动轮344、第二传动轮345以及套设于第一传动轮344与第二传动轮345上的皮带346。其中第一传动轮344与第三驱动件33的转轴固定，第二传动轮345转动连接于连接件31上并与转轮组件32固定，第一传动轮344通过皮带346带动第二传动轮345转动，进而驱动转轮组件32转动。
可以理解地，传动组件34的设置，使得连接件31的长度可根据用户需求自由调节，进而使得转轮组件32在第一方向(也即竖直方向)上的活动范围可调节。
请参照图15，图15是图6所示的多自由度驱动轮的轮转机构一变形的主视示意图。在又一个实施例中，第三驱动件33固定于连接件31设置转轮组件32的一端；第三驱动件33的转轴与转轮组件32同轴设置并固定，使得第三驱动件33驱动转轮组件32转动。如此设置，连接件31的长度可根据需求自由调节，无需增加新的传动结构。
本申请实施例提供的多自由度驱动轮100，通过转轮机构30连接于你第二驱动件21，使得转轮机构30能够绕第二方向转动；通过第二驱动件21连接于第一驱动件11，使得转轮机构30能够绕第一方向转动，进而使得转轮机构30能够绕第一方向和/或第二方向转动。 通过上述方式，使得移动平台1000能够实现前进、后退、自转、俯仰、横摆、横滚等多种行进方式。
以上所述仅为本申请的部分实施例，并非因此限制本申请的保护范围，凡是利用本申请说明书及附图内容所作的等效装置或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (20)

  1. 一种多自由度驱动轮，其特征在于，包括：
    转向机构，包括绕第一方向转动的第一驱动件；
    偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括绕第二方向转动的第二驱动件；以及
    转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；
    其中，所述连接件远离所述转轮组件的一端连接于所述第二驱动件并随所述第二驱动件转动，所述第三驱动件用于驱动所述转轮组件转动。
  2. 根据权利要求1所述的多自由度驱动轮，其特征在于，所述第一方向垂直于所述第二方向。
  3. 根据权利要求1-2任一项所述的多自由度驱动轮，其特征在于，所述第三驱动件固定于所述连接件远离所述转轮组件的一端。
  4. 根据权利要求3所述的多自由度驱动轮，其特征在于，所述转轮机构还包括传动组件，所述传动组件连接于所述连接件上并分别与所述第三驱动件与所述转轮组件连接，使得所述第三驱动件通过所述传动组件驱动所述转轮组件转动。
  5. 根据权利要求4所述的多自由度驱动轮，其特征在于，所述第三驱动件的转轴与所述第二驱动件的转轴同轴设置。
  6. 根据权利要求4所述的多自由度驱动轮，其特征在于，所述传动组件包括第一齿轮和第二齿轮，所述第一齿轮与所述第三驱动件的转轴固定，所述第二齿轮转动连接于所述连接件上并与所述转轮组件固定，所述第一齿轮带动所述第二齿轮转动，进而驱动所述转轮组件转动。
  7. 根据权利要求6所述的多自由度驱动轮，其特征在于，所述第一齿轮与所述第二齿轮间隔设置；所述传动组件还包括中间件，所述中间件分别与所述第一齿轮、所述第二齿轮相啮合，使第一齿轮可带动所述第二齿轮转动。
  8. 根据权利要求7所述的多自由度驱动轮，其特征在于，所述中间件是齿轮、齿轮组、齿形皮带中的一种。
  9. 根据权利要求4所述的多自由度驱动轮，其特征在于，所述传动组件包括第一传动轮、第二传动轮以及套设于所述第一传动轮、所述第二传动轮上的皮带；所述第一传动轮与所述第三驱动件的转轴固定，所述第二传动轮转动连接于所述连接件上并与所述转轮组件固定，所述第一传动轮通过所述皮带带动所述第二传动轮转动，进而驱动所述转轮组件转动。
  10. 根据权利要求1-2任一项所述的多自由度驱动轮，其特征在于，所述第三驱动件固定于所述连接件设置所述转轮组件的一端；所述第三驱动件的转轴与所述转轮组件同轴设置并固定，使得所述第三驱动件驱动所述转轮组件转动。
  11. 一种移动平台，其特征在于，包括：平台部以及多个多自由度驱动轮，所述多自由 度驱动轮固定于所述平台部上；
    其中，所述多自由度驱动轮包括：
    转向机构，包括绕第一方向转动的第一驱动件；
    偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括绕第二方向转动的第二驱动件；以及
    转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上的第三驱动件和转动连接于所述连接件上的转轮组件；
    其中，所述连接件远离所述转轮组件的一端连接于所述第二驱动件并随所述第二驱动件转动，所述第三驱动件用于驱动所述转轮组件转动。
  12. 根据权利要求11所述的移动平台，其特征在于，所述第一方向垂直于所述第二方向。
  13. 根据权利要求11或12所述的移动平台，其特征在于，所述第三驱动件固定于所述连接件远离所述转轮组件的一端；所述转轮机构还包括传动组件，所述传动组件连接于所述连接件上并分别与所述第三驱动件与所述转轮组件连接，使得所述第三驱动件通过所述传动组件驱动所述转轮组件转动。
  14. 根据权利要求13所述的移动平台，其特征在于，所述第三驱动件的转轴与所述第二驱动件的转轴同轴设置。
  15. 根据权利要求13所述的移动平台，其特征在于，所述传动组件包括第一齿轮和第二齿轮，所述第一齿轮与所述第三驱动件的转轴固定，所述第二齿轮转动连接于所述连接件上并与所述转轮组件固定，所述第一齿轮带动所述第二齿轮转动，进而驱动所述转轮组件转动。
  16. 根据权利要求15所述的移动平台，其特征在于，所述第一齿轮与所述第二齿轮间隔设置；所述传动组件还包括中间件，所述中间件分别与所述第一齿轮、所述第二齿轮相啮合，使第一齿轮可带动所述第二齿轮转动。
  17. 根据权利要求16所述的移动平台，其特征在于，所述中间件是齿轮、齿轮组、齿形皮带中的一种。
  18. 根据权利要求13所述的移动平台，其特征在于，所述传动组件包括第一传动轮、第二传动轮以及套设于所述第一传动轮、所述第二传动轮上的皮带；所述第一传动轮与所述第三驱动件的转轴固定，所述第二传动轮转动连接于所述连接件上并与所述转轮组件固定，所述第一传动轮通过所述皮带带动所述第二传动轮转动，进而驱动所述转轮组件转动。
  19. 根据权利要求11或12所述的移动平台，其特征在于，所述第三驱动件固定于所述连接件设置所述转轮组件的一端；所述第三驱动件的转轴与所述转轮组件同轴设置并固定，使得所述第三驱动件驱动所述转轮组件转动。
  20. 一种多自由度驱动轮，其特征在于，包括：
    转向机构，包括第一驱动件；
    偏心机构，连接于所述第一驱动件并随所述第一驱动件绕所述第一方向转动；所述偏心机构包括第二驱动件；以及
    转轮机构，连接于所述第二驱动件，所述转轮机构包括连接件以及固定于所述连接件上 的第三驱动件和转动连接于所述连接件上的转轮组件；
    其中，所述第三驱动件用于驱动所述转轮组件转动。
PCT/CN2023/101135 2022-09-09 2023-06-19 多自由度驱动轮及移动平台 WO2024051263A1 (zh)

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