Planetary transmission device, transmission, power assembly and vehicle

Abstract

The utility model relates to a planetary transmission device, a transmission, a power assembly and a vehicle, the planetary transmission device comprises a first component, a second component and a first type of supporter, the second component is used for transmitting power for rotation, and the first type of supporter is used for supporting the second component to rotate. The first type of supporting device is connected to the first component and the second component respectively, so that the first type of supporting device changes the radial position of the second component relative to the first component, and the second component at least comprises a planet carrier. By means of the technical scheme, when the second component is constructed into the planet carrier, the first type of supporting device can change the radial position of the planet carrier relative to the first component, so that the position adjusting effect of the planetary transmission device is achieved, and the power transmission stability effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a planetary transmission device, a transmission, a power assembly and a vehicle. BACKGROUND

[0002] In the related art, the power transmission stability of the planetary transmission device is poor. SUMMARY

[0003] The embodiments of the present application provide a planetary transmission device, which improves the stability of power transmission to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a planetary transmission device is provided, comprising:

[0005] a first component;

[0006] a second component for transmitting power in rotation; and

[0007] a first type of support for supporting the rotation of the second component;

[0008] wherein the first type of support is connected to the first component and the second component respectively, so that the first type of support changes the radial position of the second component relative to the first component;

[0009] The second component at least comprises a planet carrier.

[0010] Optionally, the first type of support is arranged at both axial ends of the second component.

[0011] Optionally, the first type of support comprises:

[0012] a support portion surrounding at least part of the second component; and

[0013] a rolling body connected to the support portion;

[0014] wherein the contact surface of the rolling body and the support portion is perpendicular to the axial direction of the second component, so that the radial position of the second component relative to the first component is changeable.

[0015] Optionally, the first type of support comprises:

[0016] a first support portion connected to the axial end of the second component; and

[0017] a second support portion located at the axial end of the first support portion away from the second component;

[0018] The rolling body is located between the first support part and the second support part and forms a surface contact with the first support part and the second support part respectively.

[0019] Optionally, the second part has a mounting space.

[0020] The planetary transmission device further comprises:

[0021] The third part is rotationally connected with the second part.

[0022] The third part is located in the mounting space.

[0023] Optionally, the planetary transmission device further comprises:

[0024] An input shaft is used to transmit power to the third part.

[0025] The third part is rotationally connected with the input shaft, and the third part is rotationally connected with the second part, so that the rotation of the input shaft transmits power to the third part through the second part.

[0026] Optionally, the planetary transmission device further comprises:

[0027] An output shaft is used to transmit power to the power shaft of the motor.

[0028] The output shaft is formed to the second part.

[0029] Optionally, the planetary transmission device further comprises:

[0030] A fourth part is drivingly connected with the third part.

[0031] Part of the fourth part is located in the mounting space, and the other part is located outside the mounting space to rotationally connect with the first part.

[0032] Optionally, the planetary transmission device further comprises:

[0033] A connecting member is used to connect the second part and the fourth part.

[0034] Optionally, the planetary transmission device further comprises:

[0035] A second type of support is used to support the rotation of the fourth part.

[0036] The second type of support is connected with the fourth part and the connecting member respectively.

[0037] Optionally, the planetary transmission device further comprises:

[0038] a seal between the second component and the power shaft of the electric machine, and at an end of the second component away from the first type of support.

[0039] According to a second aspect of the present application, there is provided a transmission comprising a planetary gear device as described above.

[0040] Optionally, the transmission comprises:

[0041] a housing having a receiving space;

[0042] a first planetary gear device for outputting power to a power shaft of an electric machine; and

[0043] a second planetary gear device for receiving power output by a prime mover;

[0044] wherein the first planetary gear device and the second planetary gear device are both located within the receiving space, and a third component of the first planetary gear device and a third component of the second planetary gear device are both coaxially arranged with a power output shaft of the prime mover.

[0045] Optionally, wherein the first component of the first planetary gear device is fixed to the housing;

[0046] the first component of the second planetary gear device is movably arranged relative to the housing.

[0047] According to a third aspect of the present application, there is provided a power assembly comprising a planetary gear device as described above or a transmission as described above.

[0048] According to a fourth aspect of the present application, there is provided a vehicle comprising a planetary gear device as described above or a transmission as described above or a power assembly as described above.

[0049] The present application has the beneficial effect of providing a planetary gear device with good power transmission stability.

[0050] More specifically, some embodiments of the present application can have the following specific beneficial effects:

[0051] The planetary transmission device in the embodiment of the present application comprises a first component, a second component and a first type of support, wherein the second component is used for transmitting power for rotation, the first type of support is used for supporting the rotation of the second component, and the first type of support is connected to the first component and the second component respectively, so that the first type of support changes the radial position of the second component relative to the first component, and the second component at least comprises a planet carrier. Through the above technical solution, when the second component is configured as the planet carrier, the first type of support can change the radial position of the planet carrier relative to the first component, thereby realizing the effect of adjusting the position of the planetary transmission device and achieving good power transmission stability.

[0052] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0054] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0055] Figure 1 is a schematic diagram of the internal structure of the planetary transmission device provided in the exemplary embodiment of the present application;

[0056] Figure 2 is a schematic diagram of the overall structure of the second component provided in the exemplary embodiment of the present application;

[0057] Figure 3 is a schematic diagram of the overall connection structure of the second component provided in the exemplary embodiment of the present application, in which the first support and the second support are arranged at both ends of the second component;

[0058] Figure 4 is a schematic diagram of the cross-sectional structure of Figure 3 ;

[0059] Figure 5 is an enlarged structure schematic diagram of B of Figure 4 ;

[0060] Figure 6 is a connection architecture diagram of the power assembly and the wheel provided in the exemplary embodiment of the present application;

[0061] Figure 7 is a schematic diagram of the internal structure of the transmission provided in the exemplary embodiment of the present application;

[0062] Figure 8 is a schematic view of an overall structure of a vehicle provided in an example embodiment of the present application.

[0063] Explanation of Reference Numerals:

[0064] 1000, planetary gear device;

[0065] 110, first member;

[0066] 120, second member; 120a, mounting space; 122, carrier body; 123, carrier stand; 124, carrier rotation shaft;

[0067] 130, first type of support; 131, support portion; 1311, first support portion; 1312, second support portion; 132, rolling element;

[0068] 133, first support; 134, second support;

[0069] 140, third member;

[0070] 150, input shaft;

[0071] 170, fourth member; 180, connecting member; 190, second type of support;

[0072] 210, seal groove; 220, gasket;

[0073] 300, power shaft of electric motor;

[0074] 100, transmission;

[0075] 101, housing;

[0076] 102, first planetary gear device; first ring gear; 1022, first sun gear; 1023, first carrier; 1024, first planetary gear;

[0077] 103, second planetary gear device; 1031, second ring gear; 1032, second sun gear; 1033, second carrier; 1034, second planetary gear;

[0078] 10, powertrain;

[0079] 200, drive motor;

[0080] 400, prime mover; 410, power output shaft of prime mover;

[0081] 500, planetary row output gear train;

[0082] 600, countershaft gear train;

[0083] 700, drive motor input shaft;

[0084] 800, differential;

[0085] 900, generator; 910, input shaft of the generator;

[0086] 20, wheel;

[0087] 1, vehicle. DETAILED DESCRIPTION

[0088] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0089] Referring to Figures 1 to 7 , for the convenience of introduction, the left and right directions are used in the corresponding drawings to facilitate the introduction of the relative positional relationship between the parts in the present application, which should not be understood as the limitation of the absolute position.

[0090] According to a first aspect of the present application, referring to Figure 1 , a planetary transmission device 1000 is provided, comprising: a first component 110, a second component 120, and a first type of support 130.

[0091] Among them, the first component 110 is fixedly arranged, and the second component 120 is used to transmit power for rotation, and the second component 120 at least comprises a planet carrier.

[0092] The first type of support 130 is connected to the first component 110 and the second component 120 respectively, so that the first type of support 130 changes the radial position of the second component 120 relative to the first component 110.

[0093] Through the above technical solution, when the second component 120 is constructed as a planet carrier, the first type of support 130 can change the radial position of the planet carrier relative to the first component 110, so as to realize the positioning effect of the planetary transmission device 1000, and the power transmission stability effect is good.

[0094] It should be noted that the first component 110 is fixedly arranged, which can be connected with the housing 101 of the transmission 100. Since the housing 101 of the transmission 100 is fixed, the first component 110 is also fixed.

[0095] The first component 110 comprises a ring gear, i.e. the ring gear is fixed to the housing 101 of the reducer.

[0096] The first component 110 is connected to the first type of support 130, and the first component 110 is fixed to the housing 101 of the speed reducer. When the second component 120 is subjected to an axial force, the first type of support 130 blocks the axial movement of the second component 120, that is, the first type of support 130 can limit the relative position of the second component 120 in the axial direction. However, in the radial direction, when the second component 120 is subjected to a radial force, the first type of support 130 does not block the radial movement of the second component 120, so the second component 120 can change the radial position relative to the first component 110.

[0097] In some embodiments, the first type of support 130 is arranged at both axial ends of the second component 120.

[0098] By arranging the first type of support 130 at both axial ends of the second component 120, axial loads in both directions at both axial ends can be simultaneously borne, ensuring that the system can operate stably regardless of the direction of the force, and avoiding axial movement of the second component 120.

[0099] In some embodiments, with reference to Figure 5 , the first type of support 130 includes a support portion 131 and a rolling body 132.

[0100] The support portion 131 surrounds at least part of the second component 120, and the rolling body 132 is connected to the support portion 131.

[0101] The contact surface between the rolling body 132 and the support portion 131 is perpendicular to the axial direction of the second component 120, so that the radial position of the second component 120 relative to the first component 110 can be changed. With such a scheme, the first support 133 can limit the axial position of the second component 120 without limiting the radial position of the second component 120.

[0102] Exemplarily, the first type of support 130 can be configured as an axial thrust bearing, which has a smaller size, reduces the axial installation arrangement space, has a compact overall structure, and does not need to improve the manufacturing and processing precision of the planetary row. By means of mechanical cooperation, an ideal transmission effect can be achieved, the cost is low, the stress between the planetary gears is uniform, the structural strength and NVH performance are good.

[0103] In some embodiments, with reference to Figure 5 , the first type of support 130 includes a first support portion 1311 and a second support portion 1312.

[0104] The first support portion 1311 is connected to the axial end of the second component 120, and the second support portion 1312 is located at the axial end of the first support portion 1311 away from the second component 120.

[0105] The rolling body 132 is located between the first support part 1311 and the second support part 1312 and forms a surface contact with the first support part 1311 and the second support part 1312 respectively.

[0106] In the case of the technical solution that the first type of support 130 includes the first support part 1311 and the second support part 1312, the first type of support 130 is configured as a bidirectional thrust bearing, so that the first type of support 130 can bear axial forces in both positive and negative directions.

[0107] In some embodiments, referring to Figures 2 to 4 The second component 120 has a mounting space 120a.

[0108] The planetary transmission device 1000 further includes a third component 140, and the third component 140 is in transmission connection with the second component 120.

[0109] The third component 140 is located in the mounting space 120a.

[0110] Exemplarily, the third component 140 includes a sun gear, and in the technical solution that the second component 120 is a planet carrier, the sun gear is in transmission connection with the planet carrier, and the sun gear is located in the mounting space 120a of the planet carrier. The planet carrier is a rotating power transmission component and is in transmission connection with the sun gear, so that the structure is more compact, and high torque transmission is realized in a limited space.

[0111] In some embodiments, referring to Figure 1 The planetary transmission device 1000 further includes an input shaft 150.

[0112] The input shaft 150 is used to transmit power to the third component 140, that is, the input shaft 150 can transmit power to the sun gear.

[0113] The third component 140 is in rotation-stopping connection with the input shaft 150, and the third component 140 is in rotation connection with the second component 120, so that the input shaft 150 rotates to transmit power to the third component 140 through the second component 120.

[0114] In the embodiments of the present application, the third component 140 and the input shaft 150 are coaxially arranged.

[0115] In some embodiments, the planetary transmission device 1000 further includes an output shaft.

[0116] The output shaft is used to transmit power to the power shaft 300 of the motor, and the output shaft is formed to the second component 120.

[0117] That is, the sun gear receives the power input by the input shaft 150, and transmits the power to the planet carrier, and the planet carrier transmits the power to the output shaft, so that the output shaft transmits the power to the power shaft 300 of the motor, so that the motor rotates, for example, to charge the battery of the vehicle 1.

[0118] In some embodiments, the planetary transmission 1000 further comprises a fourth component 170.

[0119] The fourth component 170 is in transmission connection with the third component 140, wherein a part of the fourth component 170 is located in the mounting space 120a, and the other part is located outside the mounting space 120a to be in rotational connection with the first component 110.

[0120] The planet carrier in the embodiments of the present application is configured as a cage-type planet carrier, comprising a planet carrier body 122, a planet carrier stand 123, and a planet carrier rotating shaft 124. The double-end plate structure disperses the radial force and tangential force generated by the meshing of the planet gears, and reduces the torsional deformation of the planet carrier due to torque.

[0121] The planet carrier rotating shaft 124 is formed at one end of the planet carrier body 122 away from the planet carrier stand 123, and a mounting space 120a is formed between the planet carrier body 122 and the planet carrier stand 123. The planet carrier rotating shaft 124 can be connected with the output shaft, and the two are integrally formed, that is, the output shaft of the planetary transmission 1000 can be part of the planet carrier rotating shaft 124.

[0122] The planet gears, as the components that transmit power between the sun gears and the ring gears, ensure uniform distribution of the force acting on the planet gears, offset the radial unbalanced force, reduce vibration and bearing wear, and improve system life, in the case that the planet carrier can change its position relative to the ring gear.

[0123] Specifically, the planet carrier rotating shaft 124, the planet carrier body 122, and the planet carrier stand 123 can be formed into an overall profile structure by casting process, and the internal pin holes and other detailed features can be machined. The planet carrier stand 123 can be processed by casting process or stamping process. The combination of the planet carrier body 122 and the planet carrier stand 123 can form the planet carrier structure by welding, bonding, or integrally casting process. The pin holes on the planet carrier body 122 and the planet carrier stand 123 are used to install the planet pins.

[0124] The planet pins and the planet carrier body 122 are in transition or small interference fit, and the planet pins and the planet carrier stand 123 are riveted in the planet pin holes.

[0125] In some embodiments, referring to Figure 1 , the planetary transmission 1000 further comprises a connecting piece 180.

[0126] The connecting member 180 is used to connect the second component 120 and the fourth component 170.

[0127] That is, the connecting member 180 is used to connect the planet carrier and the planet wheel, which can limit the axial movement and radial deviation of the planet wheel, and ensure the stability of the gear meshing side clearance.

[0128] Exemplarily, the connecting member 180 comprises a planet pin, one end of the planet pin is connected with the planet carrier body 122, and the other end of the planet pin passes through the planet wheel and is connected with the planet carrier stand 123.

[0129] During the rotation of the input shaft 150, the sun gear is driven to rotate, and the planet wheel is driven to rotate around its own axis and revolve around the sun gear with the planet carrier. During the rotation of the planet carrier, the power is output through the output shaft, for example, to the power shaft 300 of the motor, so that the power shaft 300 of the motor rotates.

[0130] In some embodiments, the planetary transmission device 1000 further comprises a second type of support 190.

[0131] The second type of support 190 is used to support the rotation of the fourth component 170, wherein the second type of support 190 is connected with the fourth component 170 and the connecting member 180 respectively.

[0132] By arranging the second type of support 190, the rotation of the fourth component 170, i.e. the revolution of the planet wheel around the sun gear and the rotation of the planet wheel, can be supported. By connecting the second type of support 190 with the planet wheel and the planet pin respectively, the stable rotation of the planet wheel can be ensured.

[0133] Exemplarily, the second type of support 190 can be configured as a needle bearing.

[0134] In some embodiments, the planetary transmission device 1000 further comprises a sealing member.

[0135] The sealing member is located between the second component 120 and the power shaft 300 of the motor, and at the end of the second component 120 away from the first type of support 130.

[0136] A sealing groove 210 can be formed on the outer peripheral wall surface of the power shaft 300 of the motor, and the sealing member can be placed in the sealing groove 210 to achieve the sealing between the second component 120 and the power shaft 300 of the motor.

[0137] It should be noted that the power shaft 300 of the motor in the present application is used as a power input shaft of the motor, and the power input shaft can be connected with the power shaft 300 of the motor. During the rotation of the power shaft 300 with the planetary transmission device 1000, the motor can generate electricity. In this case, the motor is configured as a generator 900, which can charge the battery of the vehicle 1.

[0138] The diameter of the input shaft 150 of the generator 900 is smaller than the diameter of the sun gear shaft 124, facilitating installation.

[0139] The generator 900 and the prime mover 400 in the present application are located on both sides of the planetary gear device 1000 and are coaxially connected with the output shaft and the input shaft 150 of the planetary gear device 1000, respectively.

[0140] The output shaft of the planetary gear device 1000 is connected with the power input shaft 150 of the generator 900 in spline fit, and of course, the spline fit between the two can be cancelled and a shaft coupling can be provided.

[0141] The planetary gear device 1000 in the present application can be used as a single planetary row as a whole, and the single planetary row can be integrated in a double planetary row assembly as part of a transmission.

[0142] The planet carrier upright plate 123 and the planet carrier body 122 of the planet carrier are installed inside the ring gear and can transmit power of the sun gear and the ring gear part, thereby outputting to the generator 900.

[0143] The output end of the planet carrier transmission device is connected with the generator 900 in spline fit clearance, and at the same time, by means of the characteristics of the thrust bearing being axially limited and radially free, automatic positioning of the planetary gear device 1000 is realized, achieving the purpose of load sharing of the planetary gear train.

[0144] According to a second aspect of the present application, with reference to Figure 7 , a transmission 100 is provided, comprising a planetary gear device 1000 as above.

[0145] The transmission 100 in the embodiments of the present application comprises the planetary gear device 1000 as described above, and therefore has all the beneficial effects of the planetary gear device 1000 described above, which will not be described here.

[0146] In some embodiments, with reference to Figure 7 , the transmission 100 comprises a housing 101, a first planetary gear device 102 and a second planetary gear device 103.

[0147] The housing 101 has an accommodation space, and the first planetary gear device 102 and the second planetary gear device 103 are both located in the accommodation space.

[0148] The first planetary gear device 102 is used to output power to the power shaft 300 of the motor, and the second planetary gear device 103 is used to receive the power output by the prime mover 400.

[0149] The third component 140 of the first planetary gear device 102 and the third component 140 of the second planetary gear device 103 are both coaxially arranged with the power output shaft 410 of the prime mover.

[0150] That is, the first sun gear 1022 of the first planetary gear device 102 and the second sun gear 1032 of the second planetary gear device 103 are coaxially arranged with the power output shaft 410 of the prime mover.

[0151] The transmission 100 of the embodiments of the present application, by arranging the transmission connection of the double planetary gear sets, improves the transmission capacity through spatial reuse, and more gears can be achieved with fewer gears.

[0152] Of course, the transmission 100 in the embodiments of the present application can also use only one planetary gear device 1000.

[0153] In some embodiments, the first component 110 of the first planetary gear device 102 is fixed to the housing 101, and the first component 110 of the second planetary gear device 103 is movably arranged relative to the housing 101.

[0154] It should be noted that, with reference to Figure 6 , when the transmission 100 includes double planetary gear sets 1000, the first planetary gear device 102 includes a first sun gear 1022, a first planetary gear 1024, a first ring gear (not shown in the figure) and a first planet carrier 1023, and the second planetary gear device 103 includes a second sun gear 1032, a second planetary gear 1034, a second ring gear 1031 and a second planet carrier 1033.

[0155] The first sun gear 1022 and the second sun gear 1032 are coaxially arranged, the first ring gear is fixed to the housing 101 of the reducer, and the second ring gear 1031 is movably connected relative to the housing 101 of the reducer.

[0156] The input shaft of the double planetary gear set 1000 is sleeved with the second planet carrier 1033, that is, the input shaft 150 is embedded into the planet carrier rotating shaft 124 of the second planet carrier 1033, the planet carrier rotating shaft 124 of the second planet carrier 1033 is connected with the power output shaft 410 of the prime mover, for example, the rotating shaft of the second planet carrier 1033 is embedded into the power output shaft 410 of the prime mover.

[0157] According to a third aspect of the present application, with reference to Figure 6 , a power assembly 10 is provided, which includes the planetary gear device 1000 as above or the transmission 100 as above.

[0158] With reference to Figure 6 , the power assembly 10 includes a generator 900, a prime mover 400, a drive motor 200 and a transmission 100.

[0159] The transmission 100 comprises a housing 101, a first planetary gear 102, a second planetary gear 103, a planetary row output gear train 500, a countershaft gear train 600, a drive motor input shaft train 700 and a differential 800.

[0160] The planetary row output gear train 500 and the countershaft gear train 600 are drivingly connected.

[0161] The planet carrier rotating shaft 124 of the first planetary carrier 1023 of the first planetary gear 102 of the transmission 100 is connected with the input shaft 910 of the generator, and the planet carrier rotating shaft 124 of the second planetary carrier 1033 of the second planetary gear of the transmission 100 is connected with the power output shaft 410 of the prime mover.

[0162] The first planetary gear 102 and the second planetary gear 103 are mechanically coupled and connected, and together constitute a double planetary row as an important transmission assembly of the transmission 100.

[0163] The drive motor 200 transmits power to the differential 800 to the wheel end through the drive motor 200 input shaft 150 train and the countershaft gear train 600, that is, transmits power to the wheel 20.

[0164] The end of the input shaft 150 of the generator 900 in the application is matched with the surface of the planet carrier rotating shaft 124, and is assembled by putting in a gasket 220 to prevent leakage.

[0165] The gasket 220 can be a copper gasket 220 or a rigid gasket 220 or a slightly thicker compressible rubber gasket.

[0166] According to a fourth aspect of the application, referring to Figure 8 , a vehicle 1 is provided, comprising the planetary gear 1000 as above or the transmission 100 as above or the power assembly 10 as above.

[0167] The vehicle 1 has all the beneficial effects of the planetary gear 1000 described above, which will not be repeated here.

[0168] The vehicle 1 has all the beneficial effects of the transmission 100 described above, which will not be repeated here.

[0169] The vehicle 1 can be a fuel automobile, a plug-in hybrid electric vehicle or a new energy vehicle, etc., which will not be specifically limited here.

[0170] In the description of the application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0171] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0172] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0173] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment in accordance with the technical essence of the present application without departing from the technical solution content of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A planetary transmission (1000) characterized by, Comprising: a first component (110); a second component (120) for transmitting power of rotation; and a first type of support (130) for supporting rotation of the second component (120); wherein the first type of support (130) is connected to the first component (110) and the second component (120) respectively, so that the first type of support (130) changes the radial position of the second component (120) relative to the first component (110); the second component (120) comprises at least a carrier.

2. The planetary transmission (1000) according to claim 1, wherein: the first type of support (130) is arranged at both axial ends of the second component (120).

3. The planetary transmission (1000) according to claim 1 or 2, wherein: the first type of support (130) comprises: a support portion (131) surrounding at least a portion of the second component (120); and a rolling body (132) connected to the support portion (131); wherein the contact surface of the rolling body (132) and the support portion (131) is perpendicular to the axial direction of the second component (120), so that the radial position of the second component (120) relative to the first component (110) is changeable.

4. The planetary transmission (1000) according to claim 3, wherein: the first type of support (130) comprises: a first support portion (1311) connected to an axial end of the second component (120); and a second support portion (1312) located at an axial end of the first support portion (1311) away from the second component (120); wherein the rolling body (132) is located between the first support portion (1311) and the second support portion (1312), and forms a surface contact with the first support portion (1311) and the second support portion (1312) respectively.

5. The planetary transmission (1000) according to claim 2, wherein: the second component (120) has a mounting space (120a); the planetary transmission (1000) further comprises: a third component (140) rotationally connected to the second component (120); wherein the third component (140) is located in the mounting space (120a).

6. The planetary transmission (1000) according to claim 5, wherein: the planetary transmission (1000) further comprises: an input shaft (150) for transmitting power to the third component (140); wherein the third component (140) is rotationally connected to the input shaft (150), and the third component (140) is rotationally connected to the second component (120), so that the rotation of the input shaft (150) transmits power to the third component (140) through the second component (120).

7. The planetary transmission (1000) according to claim 6, wherein: the planetary transmission (1000) further comprises: an output shaft for transmitting power to a power shaft (300) of the motor; wherein the output shaft is formed to the second component (120).

8. The planetary transmission (1000) according to any one of claims 5 to 7, wherein the planetary transmission (1000) further comprises: a fourth component (170) in transmission connection with the third component (140); wherein a part of the fourth component (170) is located within the mounting space (120a) and another part of the fourth component (170) is located outside the mounting space (120a) to be in rotational connection with the first component (110).

9. The planetary transmission (1000) according to claim 8, wherein the planetary transmission (1000) further comprises: a connecting member (180) for connecting the second component (120) and the fourth component (170).

10. The planetary transmission (1000) according to claim 9, wherein the planetary transmission (1000) further comprises: a second type of support (190) for supporting the rotation of the fourth component (170); wherein the second type of support (190) is connected to the fourth component (170) and the connecting member (180) respectively.

11. The planetary transmission (1000) according to any one of claims 5 to 7, wherein the planetary transmission (1000) further comprises: a sealing member located between the second component (120) and the power shaft (300) of the motor, and located at an end of the second component (120) away from the first type of support (130). The planetary transmission (1000) according to any one of claims 1 to 11. The transmission (100) comprises: a housing (101) having a receiving space; a first planetary transmission (102) for outputting power to a power shaft (300) of the motor; and 12. A transmission (100) characterized by, a second planetary transmission (103) for receiving power outputted by a prime mover (400); 13. The transmission (100) of claim 12, characterized by wherein the first planetary transmission (102) and the second planetary transmission (103) are both located within the receiving space, and the third component (140) of the first planetary transmission (102) and the third component (140) of the second planetary transmission (103) are both coaxially arranged with a power output shaft (410) of the prime mover. wherein, the first component of the first planetary transmission (102) is fixed to the housing (101); and the first component of the second planetary transmission (103) is movably arranged relative to the housing (101). The planetary transmission (1000) according to any one of claims 1 to 11 or the transmission (100) according to any one of claims 12 to 14.

14. The transmission (100) of claim 13, characterized by The planetary transmission (1000) according to any one of claims 1 to 11 or the transmission (100) according to any one of claims 12 to 14 or the power assembly (10) according to claim 15. ​ ​ 15. A powertrain (10) characterized by, ​ 16. A vehicle (1) characterized by ​

Images