CN115045968A - Transmission, power unit, power generation unit, traveling device, and robot - Google Patents

Transmission, power unit, power generation unit, traveling device, and robot Download PDF

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Publication number
CN115045968A
CN115045968A CN202210816883.8A CN202210816883A CN115045968A CN 115045968 A CN115045968 A CN 115045968A CN 202210816883 A CN202210816883 A CN 202210816883A CN 115045968 A CN115045968 A CN 115045968A
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CN
China
Prior art keywords
wheel
transmission
outer wheel
power
way bearing
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Pending
Application number
CN202210816883.8A
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Chinese (zh)
Inventor
陈林富
邵太旋
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Zhuhai Panshi Electronic Technology Co ltd
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Zhuhai Panshi Electronic Technology Co ltd
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Publication date
Application filed by Zhuhai Panshi Electronic Technology Co ltd filed Critical Zhuhai Panshi Electronic Technology Co ltd
Priority to CN202210816883.8A priority Critical patent/CN115045968A/en
Publication of CN115045968A publication Critical patent/CN115045968A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/037—Gearboxes for accommodating differential gearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Transmission Devices (AREA)

Abstract

The invention provides a transmission which comprises a shell, an epicyclic gear train and a clutch mechanism. The epicyclic gearing comprises a first central wheel, a first planet wheel, a first outer wheel and a first planet carrier. The first central wheel or the first outer wheel is used as a power input unit, and the first planet carrier is used as a power output unit; when the power input unit reaches a predetermined rotation speed, the clutch mechanism relatively fixes two of the first center wheel, the first outer wheel, and the first carrier. A transmission bypass is arranged between the first central wheel and the first outer wheel; the transmission bypass comprises a reverse transition unit and a first one-way bearing; the reverse transition unit couples the first center wheel and the first outer wheel in opposite directions of rotation. The scheme has the functions of two-gear speed change and speed reduction and reversing; when the power input unit is lower than the preset rotating speed and the clutch mechanism is in a disconnected working state, the speed reduction and reversing functions are still available, and the structure is simple and compact.

Description

Transmission, power unit, power generation unit, traveling device, and robot
Technical Field
The present invention relates to a transmission, and a power unit, a power generation unit, a travel device, and a robot each having the transmission.
Background
The existing two-gear transmission has the main problems of complex structure, more complex structure of the transmission with the reverse gear function, larger space volume and weight occupation and high cost.
Description of the invention
A first object of the invention is to provide a compact transmission.
To achieve the above object, a transmission of the present invention includes a housing, an epicyclic gear train, and a clutch mechanism. The epicyclic gear train comprises a first central wheel, a first planet wheel, a first outer wheel and a first planet carrier. The first central wheel or the first outer wheel is used as a power input unit, and the first planet carrier is used as a power output unit; when the power input unit reaches a predetermined rotation speed, the clutch mechanism relatively fixes two of the first center wheel, the first outer wheel, and the first carrier. A transmission bypass is arranged between the first central wheel and the first outer wheel; the transmission bypass comprises a reverse transition unit and a first one-way bearing; the reverse transition unit couples the first center wheel and the first outer wheel in opposite rotational directions.
When the first central wheel is used as a power input unit, a second one-way bearing is installed between the first outer wheel and the shell, and the transmission ratio of the transmission bypass is larger than the reference circle diameter ratio between the first outer wheel and the first central wheel. When the first center wheel rotates forwards, the second one-way bearing enables the first outer wheel to stop rotating, and the first one-way bearing blocks the first center wheel from transmitting power to the first outer wheel through the transmission side; when the first central wheel rotates reversely, the second one-way bearing allows the first outer wheel to rotate, and the first one-way bearing allows the first central wheel to transmit power to the first outer wheel through the transmission side;
when the first outer wheel serves as a power input unit, a second one-way bearing is installed between the first center wheel and the shell, and the transmission ratio of the transmission bypass is larger than the reference circle diameter ratio between the first center wheel and the first outer wheel. When the first outer wheel rotates in the forward direction, the second one-way bearing enables the first center wheel to stop rotating, the first one-way bearing blocks the first outer wheel from transmitting power to the first center wheel through the transmission side, when the first outer wheel rotates in the reverse direction, the second one-way bearing allows the first center wheel to rotate, and the first one-way bearing allows the first outer wheel to transmit power to the first center wheel through the transmission side.
As can be seen from the above arrangement, the variator has two different gear ratios, a first gear ratio being a step-down gear and a second gear ratio being 1: 1. When the power input unit is lower than the preset rotating speed, the first one-way bearing blocks power to be transmitted through the transmission bypass, and the second one-way bearing enables the first central wheel or the first outer wheel to stop rotating, so that speed reduction output is realized; when the power input unit reaches a preset rotating speed, the clutch mechanism enables two of the first central wheel, the first planet carrier and the first outer wheel to be fixed relatively, and the first central wheel or the first outer wheel is inverted at the moment and is not limited by the second one-way bearing, so that the gear is switched to the second transmission ratio. After the second transmission ratio is switched, the transmission bypass is driven, and because the transmission bypass is provided with the reverse transition unit which enables the first central wheel and the first outer wheel to be connected in a reverse rotating direction, the power transmission of the transmission bypass between the first central wheel and the first outer wheel is still isolated by the first one-way bearing, and no transmission ratio conflict is generated. When the vehicle is backed, the power input unit rotates reversely, the second one-way bearing allows the first central wheel or the first outer wheel connected with the second one-way bearing to rotate, the first one-way bearing allows power to be transmitted through the transmission bypass, and the first central wheel and the first outer wheel realize speed reduction output of the first planet carrier in a differential mode. The scheme has the functions of two-gear speed change and speed reduction and reversing; when the power input unit is lower than the preset rotating speed and the clutch mechanism is in a disconnected working state, the speed reduction and reversing functions are still available; and the structure is simple and compact.
In a further scheme, the clutch mechanism is a centrifugal clutch. According to the scheme, the two-gear automatic speed changing and speed reducing reversing functions can be realized without an electric control or hydraulic control system, the system level is simplified, and the structure is simpler and more compact.
Further, the centrifugal clutch is provided between the first center wheel and the first outer wheel. The clutch is beneficial to fully utilizing the space to increase the size of the clutch and improve the upper limit of the transmission power.
The reverse transition unit is a planetary gear train and comprises a second central wheel, a second planetary gear, a second outer wheel and a second planetary carrier, wherein the second planetary carrier is fixed on the shell, the second outer wheel is connected with the first outer wheel, and the second central wheel is connected with the first central wheel. This scheme is favorable to improving overall structure's compactness and structural strength.
The further scheme is that the first one-way bearing is arranged on the second central wheel or between the first central wheel and the second central wheel. This solution contributes to further saving of the overall space.
Further, the first one-way bearing is arranged on the second outer wheel or between the first outer wheel and the second outer wheel. This solution contributes to further saving of the overall space.
A second object of the present invention is to provide a power unit.
In order to achieve the above object, the power unit of the present invention has an electric motor or an oil engine, and further includes any of the foregoing transmissions, to which the electric motor or the oil engine inputs power through an output shaft thereof. According to the scheme, the speed is reduced and the starting is carried out at a low speed, and the direct drive output is switched to at a high speed, so that the starting load is reduced.
A third object of the present invention is to provide a power generation unit.
In order to achieve the above object, the power generation unit of the present invention has a generator, and further includes any of the aforementioned transmissions that inputs power to the generator through an output shaft thereof. The scheme is started at a low speed in a deceleration way, the direct drive input is switched to the high speed, the starting load is reduced, and the breeze starting can be realized if the wind driven generator is used.
A fourth object of the present invention is to provide a running device.
In order to achieve the above object, the driving device of the present invention provides driving power by the power unit. According to the scheme, the vehicle is started at a low speed in a decelerating way, and is switched to direct-drive output at a high speed, so that the starting traction force can be increased, the overall weight of the running device is reduced, and the internal space of the running device is saved.
A fifth object of the present invention is to provide a robot.
In order to achieve the purpose, the robot of the invention provides motive power for movement through the power unit. According to the scheme, the robot is started at a low speed in a decelerating way, and is switched to direct-drive output at a high speed, so that the robot moves stably and powerfully when working at a low speed, and the power unit can work at a high-efficiency state when working at a high speed, so that the loss is reduced.
Drawings
FIG. 1 is a diagrammatic view of a first embodiment of the transmission;
FIG. 2 is a diagrammatic view of a second embodiment of the transmission;
FIG. 3 is a diagrammatic view of a third embodiment of the transmission;
FIG. 4 is a diagrammatic view of a fourth embodiment of the transmission;
FIG. 5 is a schematic illustration of a fifth embodiment of the transmission;
FIG. 6 is a diagrammatic view of a sixth embodiment of the transmission;
FIG. 7 is a schematic view of an embodiment of a power unit;
FIG. 8 is a schematic view of an embodiment of a power generation unit;
FIG. 9 is a perspective view of a power unit of the embodiment of the running gear;
FIG. 10 is the view of FIG. 9 with the end cap omitted;
FIG. 11 is a sectional view A-A of FIG. 9;
FIG. 12 is an enlarged view of the centrifugal clutch of FIG. 11;
FIG. 13 is a perspective view of a second embodiment of a centrifugal clutch;
FIG. 14 is a front view of the third embodiment of the centrifugal clutch;
fig. 15 is a sectional view B-B of fig. 14.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The transmission ratio is the ratio of the rotational speed of the primary transmission unit to the rotational speed of the secondary transmission unit. Wherein, the side close to the power source is a primary transmission unit, and the side far away from the power source is a secondary transmission unit.
First embodiment of Transmission
As shown in fig. 1, the transmission 100 includes a housing 110, an epicyclic gear train 120, and a clutch mechanism 130. The epicyclic gearing 120 comprises a first central wheel 121, a first planet wheel 122, a first outer wheel 123 and a first planet carrier 124. The first sun gear 121 as a power input unit, and the first carrier 124 as a power output unit; when the power input unit reaches a predetermined rotational speed, the clutch mechanism 130 relatively fixes the first center wheel 121 and the first outer wheel 123. A transmission bypass 140 is arranged between the first central wheel 121 and the first outer wheel 123; the transmission bypass 140 includes a first one-way bearing 141 and a planetary gear train 150 as a reverse transition unit; the reverse transition unit couples the first center wheel 121 and the first outer wheel 123 in opposite directions.
The planetary gear train 150 includes a second sun gear 151, a second planetary gear 152, a second outer gear 153, and a second carrier 154, the second carrier 154 is fixed to the housing 110, the second outer gear 153 is connected to the first outer gear 123, and the second sun gear 151 is connected to the first sun gear 121. Specifically, the second outer wheel 153 is connected to the first outer wheel 123 via the outer connecting portion 143, and the second center wheel 151 is connected to the first center wheel 121 via the input shaft 126.
A second one-way bearing 142 is installed between the first outer wheel 123 and the housing 110, and a gear ratio of the gear bypass 140 is greater than a reference diameter ratio between the first outer wheel 123 and the first center wheel 121. At this time, the transmission ratio of the transmission bypass 140 is the rotation speed ratio of the second center wheel 151 to the second outer wheel 153.
When the first center wheel 121 rotates in the forward direction, the second one-way bearing 142 stops the first outer wheel 123, and the first one-way bearing 141 blocks the first center wheel 121 from transmitting power to the first outer wheel 123 through the transmission bypass 140; when the first center wheel 121 rotates reversely, the second one-way bearing 142 allows the first outer wheel 123 to rotate, and the first one-way bearing 141 allows the first center wheel 121 to transmit power to the first outer wheel 123 through the transmission bypass 140.
Preferably, the clutch mechanism 130 is a centrifugal clutch.
The clutch mechanism 130 is not limited to the region 131 provided for connecting the first center wheel 121 and the first outer wheel 123, and may be provided in the region 132 for connecting the first outer wheel 123 and the first carrier 124, or may be provided in the region 133 or 134 for connecting the first center wheel 121 and the first carrier 124. When the power input unit reaches a predetermined rotational speed, the clutch mechanism relatively fixes two of the first center wheel 121, the first outer wheel 123, and the first carrier 124 to shift to the second gear ratio. After the clutch mechanism fixes two of the first center wheel 121, the first outer wheel 123 and the first carrier 124 relatively, the first center wheel 121, the first outer wheel 123 and the first carrier 124 are fixed relatively at the same time, and no relative movement exists between two.
Preferably, the first one-way bearing 141 is provided on the second center wheel 151. The second center wheel 151 includes an inner race 151a and an outer race 152b thereon, and the first one-way bearing 141 is located between the inner race 151a and the outer race 152 b. This is advantageous in saving the length of the transmission in the axial direction of the first center wheel 121.
It is apparent that the reduction gear 100 outputs power through the output shaft 125 of the first carrier 124, and both ends of the input shaft 126 connected to the first sun gear 121 can input power.
It is clear that the epicyclic gear train 120 and the reverse transition unit are not limited to power transmission using mechanical gear engagement, but may also be power transmission using magnetic gear engagement, even by means of friction wheel engagement or pulley transmission.
Second embodiment of Transmission
As shown in fig. 2, the transmission 200 is different from the first embodiment in that the first outer wheel 223 is used as a power input unit, a second one-way bearing 242 is installed between the first center wheel 221 and the housing 210, and the gear ratio of the transmission bypass 240 is larger than the reference diameter ratio between the first center wheel 221 and the first outer wheel 223. At this time, the transmission ratio of the transmission bypass 240 is the rotation speed ratio of the second outer wheel 253 to the second center wheel 251.
The second one-way bearing 242 makes the first center wheel 221 to be stopped when the first outer wheel 223 is rotated in the forward direction, the first one-way bearing 241 blocks the first outer wheel 223 from transmitting power to the first center wheel 221 through the transmission bypass 240, and when the first outer wheel 223 is rotated in the reverse direction, the second one-way bearing 242 allows the first center wheel 221 to be rotated, and the first one-way bearing 241 allows the first outer wheel 223 to transmit power to the first center wheel 221 through the transmission bypass 240.
The housing 210 is preferably provided with a separate opening (not shown) through which external power is input to the first outer wheel 223.
Third embodiment of Transmission
As shown in fig. 3, the transmission 300 differs from the first embodiment in the arrangement position of the first one-way bearing 341. The first one-way bearing 341 is located on the transmission shaft between the first center gear 321 and the second center gear 351.
It is apparent that the first one-way bearing 341 is not limited to be arranged between the first center wheel 321 and the second center wheel 351, but may be arranged at a position 354 of the second outer wheel 353, and may be arranged at a position 356 between the first outer wheel 323 and the second outer wheel 353, that is, at the outer connecting portion 343.
Fourth embodiment of Transmission
The meshing relationship between the first planetary gear and the first outer gear is not limited to the inner mesh, and may be the outer mesh.
As shown in fig. 4, the transmission 400 differs from the first embodiment in that the first planetary gears 422 are externally engaged with the first center gear 421 and the first outer gear 423, respectively. The first planet gear 422 includes an inner planet gear 422a and an outer planet gear 422 b.
Fifth embodiment of the Transmission
The reverse transition unit is not limited to the planetary gear train.
As shown in fig. 5, the transmission 500 is different from the first embodiment in that a reverse transition unit 550 includes a second center wheel 551, a transition wheel 552, and a second outer wheel 553, and the transition wheel 552 is rotatably mounted on the housing 510 by a shaft 554.
Sixth embodiment of Transmission
In the reverse transition unit, inner meshing is not necessary.
As shown in fig. 6, the transmission 600 differs from the fifth embodiment in that a transition wheel 652 is externally engaged with a second center wheel 651 and a second outer wheel 653, respectively. Wherein the transition wheels 652 comprise an inner transition wheel 652a and an outer transition wheel 652 b; the inner transition wheel 652a is rotatably mounted to the housing 610 by a shaft 654a, and the outer transition wheel 652b is rotatably mounted to the housing 610 by a shaft 654 b.
Power Unit embodiments
As shown in fig. 7, the power unit 1100 includes the transmission 100 and the motor 10. The output shaft 11 of the motor 10 is connected to the input shaft 126 of the transmission 100 via a coupling 12. The motor 10 is connected to the housing 110 of the transmission 100 through the connection portion 13.
The present embodiment is not limited to the use of the transmission 100, and other embodiments of the transmission may be used.
The present embodiment is not limited to the use of the motor 10 to generate power, and may also use an oil engine to generate power. The oil engine is not limited to a diesel engine, and may be a fuel engine such as a gasoline engine or a methanol engine.
Power generating Unit embodiments
As shown in fig. 8, the power generation unit 2100 includes a transmission 100 and a generator 20. The input shaft 21 of the generator 20 is connected to the output shaft 125 of the transmission 100 via a coupling 22. The generator 20 is connected to the housing 110 of the transmission 100 through a connection portion 23. The power generation unit receives power from the input shaft 126, and for example, a propeller for wind power generation is attached to the input shaft 126.
The present embodiment is not limited to the use of the transmission 100, and other embodiments of the transmission may be used.
Embodiment of running device
As shown in fig. 9, the power unit 3700 includes the transmission 700, the motor 30, and the differential unit 40.
As shown in fig. 10, the output shaft 31 of the motor 30 transmits power to the input shaft 726 of the transmission 700 through the gear 32 and the gear 33.
As shown in fig. 11, an output shaft 725 of the transmission 700 transmits power to the differential unit 40 through a gear 41 and a gear 42, and outputs the power to an actuator (not shown) of the running gear via a half shaft 43 of the differential unit 40.
The operation of differential 700 is similar to differential 300.
The transmission 700 includes a housing 710, an epicyclic gear train 720 and a clutch mechanism 730. Epicyclic gearing 720 includes a first central wheel 721, a first planet wheel 722, a first outer wheel 723 and a first planet carrier 724. The first sun gear 721 as a power input unit, the first carrier 724 as a power output unit; when the power input unit reaches a predetermined rotational speed, the clutch mechanism 730 relatively fixes the first center wheel 721 and the first outer wheel 723. A transmission bypass 740 is arranged between the first central wheel 721 and the first outer wheel 723; the transmission bypass 740 includes a first one-way bearing 741 and a planetary gear train 750 as a reverse transition unit; the reverse transition unit couples the first center wheel 721 and the first outer wheel 723 in opposite directions.
The planetary gear train 750 includes a second sun gear 751, second planetary gears 752, a second outer wheel 753, and a second planet carrier 754, the second planet carrier 754 being fixed to the housing 710, the second outer wheel 753 being connected to the first outer wheel 723, and the second sun gear 751 being connected to the first sun gear 721. Specifically, the second outer wheel 753 is coupled to the first outer wheel 723 via an outer coupling 743, and the second center wheel 751 is coupled to the first center wheel 721 via the input shaft 726.
The first center wheel 721 is used as a power input unit, a second one-way bearing 742 is installed between the first outer wheel 723 and the housing 710, and the transmission ratio of the transmission bypass 740 is larger than the reference diameter ratio between the first outer wheel 723 and the first center wheel 721. When the first center wheel 721 rotates in the forward direction, the second one-way bearing 742 stops the first outer wheel 723, and the first one-way bearing 741 blocks the first center wheel 721 from transmitting power to the first outer wheel 723 through the transmission bypass 740; when the first center wheel 721 rotates in the reverse direction, the second one-way bearing 742 allows the first outer wheel 723 to rotate, and the first one-way bearing 741 allows the first center wheel 721 to transmit power to the first outer wheel 723 through the transmission bypass 740.
As shown in fig. 12, centrifugal clutch 730 includes a seat 731, a slinger 732, and a return spring 733. The throw block 732 is slidably mounted on the seat 731 by a guide bar 734, and a friction plate 735 is disposed outside the throw block 732. Housing 731 is mounted to input shaft 726 of transmission 700 through its central bore 736. When the input shaft 726 reaches a predetermined rotation speed, the throwing block 732 overcomes the pulling force of the spring 733 and radially moves away from the central hole 736 until the friction plate 735 abuts against the inner wall of the outer connecting portion 743, the outer connecting portion 743 is driven to rotate along with the throwing block 732 through friction force, and therefore the first central wheel 721 and the first outer wheel 723 are fixed relatively.
The clutch mechanism is not limited to the specific configuration of centrifugal clutch 730.
As shown in fig. 13, centrifugal clutch 830 includes a housing 831, a slinger 832, and a return spring 833. The throwing block 832 is slidably mounted on the seat body 831 through a guide rod 834, a friction plate 835 is arranged outside the throwing block 832, and the three throwing blocks 832 share the ring-type return spring 833.
As shown in fig. 14 and 15, the centrifugal clutch 930 has a seat body 931, a throw block 932, a push block 935, and a housing 939. The housing 939 includes an end cover 939a and a cylinder 939b, and the end cover 939a is fixed to the cylinder 939b by screws. An annular return spring 933 provides the flail 931 with a return force directed radially toward the central bore 936, and a return spring 934 urges the two pushers 935 toward each other and against the axial end faces of the flail 932. A friction plate 938 is arranged on one side of the pushing block 835, which is close to the end cover 939a, and a friction plate 937 is arranged on one side of the end cover 939a, which is close to the pushing block 935. The axial end surface of the stopper 932 abutting against the push block 935 is a conical surface. The tapered portion of the bump 932 has a greater axial length along the portion radially adjacent the central aperture 936.
The central bore 936 is adapted to be mounted on the input shaft 726 of the variator 700 and the housing 939 is adapted to be secured to the outer coupling 743 of the variator 700. When the input shaft 726 reaches a predetermined rotation speed, the throwing block 932 overcomes the acting forces of the ring-type return spring 933 and the return spring 934 to move radially outwards, and the pushing block 935 is pushed by the conical surface to move axially, so that the friction plate 937 is abutted to the friction plate 938, and the relative fixing of the first center wheel 721 and the first outer wheel 723 is completed.
The clutch mechanism is not limited to the specific structural form of the above centrifugal clutch as long as any two of the first center wheel, the first outer wheel, and the first carrier can be relatively fixed when the power input unit reaches a predetermined rotation speed.
The clutch mechanism in the above embodiments is not limited to a centrifugal clutch, and may be an electrically controlled or a hydraulically controlled clutch.
The differential unit 40 is not necessary, and the transmission 700 of the power unit 3700 mounted on the frame of the running gear may directly output power to the actuator of the running gear, such as wheels, paddles, or airships.
The running device is not limited to a vehicle, but may be an aircraft, a ship, a submarine, an amphibious vehicle, an earth effect vehicle, or the like.
The power unit of the present invention is not limited to being mounted on a traveling device, and may be mounted on a robot for driving joints or traveling mechanisms of the robot.
The running device of the present invention is not limited to manned, but may be unmanned, not limited to transportation, and may be a toy.
The robot of the present invention is not limited to a commercial or household robot, but may be a toy robot.
The present invention has been described in detail with reference to specific embodiments, and it should not be construed that the embodiments of the present invention are limited to the description. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications, which are equivalent in performance or use, without departing from the inventive concept, should be considered as falling within the scope of the present invention as defined by the appended claims.

Claims (10)

1. The transmission comprises a shell, an epicyclic gear train and a clutch mechanism;
the epicyclic gear train comprises a first central wheel, a first planet wheel, a first outer wheel and a first planet carrier;
the method is characterized in that:
the first central wheel or the first outer wheel serves as a power input unit, and the first planet carrier serves as a power output unit;
when the power input unit reaches a predetermined rotation speed, the clutch mechanism relatively fixes two of the first center wheel, the first outer wheel, and the first carrier;
a transmission bypass is arranged between the first central wheel and the first outer wheel;
the transmission bypass comprises a reverse transition unit and a first one-way bearing;
the reverse transition unit couples the first center wheel and the first outer wheel in opposite rotational directions;
when the first central wheel serves as the power input unit, a second one-way bearing is installed between the first outer wheel and the shell, and the transmission ratio of the transmission bypass is larger than the reference circle diameter ratio between the first outer wheel and the first central wheel; when the first central wheel rotates forwards, the second one-way bearing enables the first outer wheel to stop rotating, and the first one-way bearing blocks the first central wheel from transmitting power to the first outer wheel through the transmission bypass; when the first center wheel rotates in the reverse direction, the second one-way bearing allows the first outer wheel to rotate, the first one-way bearing allows the first center wheel to transmit power to the first outer wheel through the transmission bypass;
when the first outer wheel serves as the power input unit, a second one-way bearing is installed between the first center wheel and the shell, and the transmission ratio of the transmission bypass is larger than the reference circle diameter ratio between the first center wheel and the first outer wheel; when the first outer wheel rotates in the forward direction, the second one-way bearing enables the first center wheel to stop rotating, and the first one-way bearing blocks the first outer wheel from transmitting power to the first center wheel through the transmission bypass; the second one-way bearing allows the first center wheel to rotate when the first outer wheel rotates in a reverse direction, the first one-way bearing allowing the first outer wheel to transmit power to the first center wheel through the transmission bypass.
2. The transmission of claim 1, wherein:
the clutch mechanism is a centrifugal clutch.
3. The transmission of claim 2, wherein:
the centrifugal clutch is disposed between the first center wheel and the first outer wheel.
4. The transmission of claim 2, wherein:
the reverse transition unit is a planetary gear train and comprises a second central wheel, a second planet wheel, a second outer wheel and a second planet carrier;
the second planet carrier is fixed on the shell;
the second outer wheel is connected with the first outer wheel;
the second center wheel is connected with the first center wheel.
5. The transmission of claim 4, wherein:
the first one-way bearing is arranged on the second center wheel or between the first center wheel and the second center wheel.
6. The transmission of claim 4, wherein:
the first one-way bearing is disposed on the second outer wheel or between the first outer wheel and the second outer wheel.
7. The power unit is provided with a motor or an oil engine, and is characterized in that:
further comprising the transmission of any one of claims 1 to 6;
the motor or the oil engine inputs power to the transmission through an output shaft thereof.
8. The power generation unit is provided with a generator and is characterized in that:
further comprising the transmission of any one of claims 1 to 6;
the transmission inputs power to the generator through an output shaft thereof.
9. A means for driving, characterized in that the power unit of claim 7 provides the power for driving.
10. A robot, characterized in that the power for movement is provided by the power unit of claim 7.
CN202210816883.8A 2022-07-12 2022-07-12 Transmission, power unit, power generation unit, traveling device, and robot Pending CN115045968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210816883.8A CN115045968A (en) 2022-07-12 2022-07-12 Transmission, power unit, power generation unit, traveling device, and robot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210816883.8A CN115045968A (en) 2022-07-12 2022-07-12 Transmission, power unit, power generation unit, traveling device, and robot

Publications (1)

Publication Number Publication Date
CN115045968A true CN115045968A (en) 2022-09-13

Family

ID=83166191

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210816883.8A Pending CN115045968A (en) 2022-07-12 2022-07-12 Transmission, power unit, power generation unit, traveling device, and robot

Country Status (1)

Country Link
CN (1) CN115045968A (en)

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