CN115875425A - Inner ring gear shaft, input shaft assembly, hybrid power electric drive assembly and vehicle - Google Patents

Abstract

The invention discloses an inner ring gear shaft, an input shaft assembly, a hybrid electric drive assembly and a vehicle, and solves the technical problem of low integration of the electric drive system in the prior art. The inner ring gear shaft provided by the present invention can be sleeved on the planetary row as a whole, and serves as a part of the planetary row. The inner ring gear shaft is installed on the housing assembly through a support bearing, and multiple mounting positions for components can be arranged on it. And the ring gear shaft is connected with the ring gear of the planetary row, and participates in the operation of the planetary row as a part of the planetary row. Therefore, by setting the ring gear shaft, the planetary gear transmission function, actuator installation, shift gear installation and necessary axial limit function can be integrated at the same time, thereby greatly improving the integration of the electric drive system and reducing the power consumption. The functional volume of the drive makes the electric drive system with the ring gear shaft more flexible in layout and loading performance.

Description

A ring gear shaft, input shaft assembly, hybrid electric drive assembly and vehicle

technical field

The application belongs to the technical field of planetary gear transmissions, and in particular relates to an inner ring gear shaft, an input shaft assembly, a hybrid electric drive assembly and a vehicle.

Background technique

With the development of electric drive systems, all-in-one has gradually become a major trend. High integration can reduce the weight of components, reduce costs, reduce the load of the vehicle, and enhance the loadability of the electric drive assembly. For the load hybrid system, in addition to being highly integrated, the compact structural arrangement is also an important dimension for reducing the volume and enhancing the loadability.

In the prior art, the relevant research on the hybrid electric drive assembly mostly focuses on the perspectives of power split transmission architecture and power distribution mode. ), discloses a power split drive architecture. However, research on hybrid electric drives with high integration and low functional volume is rarely recorded.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides an inner ring gear shaft, an input shaft assembly, a hybrid electric drive assembly and a vehicle. By setting the inner ring gear shaft, multiple systems are highly integrated and the functional volume of the electric drive is reduced. , so as to have more flexible layout and loading performance.

The technical solution adopted to achieve the purpose of the present invention is an inner ring gear shaft, which is used to be sleeved on the planetary row and installed on the housing assembly through a support bearing; the inner ring gear shaft includes:

The sleeve part is used to be sleeved on the sun gear shaft or the planet carrier shaft of the planetary row, and the sleeve part is provided with at least one first installation position for installing the actuator;

The cover part is connected to the shaft sleeve part and is used for transmission connection with the ring gear of the planetary row;

Wherein, the cover portion and/or the sleeve portion are provided with at least one assembly position for setting the support bearing; the cover portion and/or the sleeve portion are provided with at least one mounting position for setting the gear The second installation position.

In some embodiments, the cover part includes a gear sleeve part and a baffle part, the inner ring of the baffle part is connected to the shaft sleeve part, and the outer ring is connected to the gear sleeve part.

In some embodiments, the gear sleeve part and the ring gear are in an integral structure or keyed connection; the shaft sleeve part, the baffle part, and the gear sleeve part are in an integrated structure.

In some embodiments, the gear sleeve part is connected to the inner ring gear through a spline; the inner spline of the gear sleeve part is provided with a snap ring groove.

In some embodiments, both the gear sleeve part and the shaft sleeve part are provided with the assembly position; the assembly position of the gear sleeve part is the wall of the inner hole, and the assembly position of the shaft sleeve part is provided with For mounting the bushing of the support bearing.

In some embodiments, a limiting structure for axially limiting the support bearing is provided between the fitting position of the tooth sleeve portion and the mounting position of the inner ring gear.

In some embodiments, both the tooth sleeve part and the shaft sleeve part are provided with the second installation position; Bit limit structure.

In some embodiments, the first installation position is a key connection structure; the first installation position is provided with a limiting structure for axially limiting the actuator.

In some embodiments, there are two first installation positions, two assembly positions and two second installation positions; the two first installation positions are distributed at both ends of the shaft sleeve; The two assembly positions and the two second installation positions are respectively provided on the shaft sleeve part and the cover part.

In some embodiments, the sleeve part and/or the cover part is provided with at least one oil guide hole penetrating through the sleeve wall of the sleeve part; The oil guide groove of the oil guide hole.

Based on the same inventive concept, the present application also provides an input shaft assembly, including: a planetary row for connecting the engine, at least one actuator, at least one support bearing, at least one gear and the above-mentioned ring gear shaft; The ring gear shaft is sleeved on the sun gear shaft or the planet carrier shaft of the planetary row, and the cover part of the ring gear shaft is connected with the ring gear of the planetary row; the at least one actuator is installed on The at least one first installation position; the at least one support bearing is arranged on the at least one assembly location; the at least one gear is arranged on the at least one second installation location.

In some embodiments, the at least one actuator includes a first actuator and a second actuator; the at least one support bearing includes a first support bearing and a second support bearing; the at least one gear includes a first gear first gear and second gear.

In some embodiments, the first actuator and the second actuator are distributed at both ends of the sleeve part; the first support bearing is arranged in the inner hole of the cover part, and the The second support bearing is set between the first actuator and the second actuator through a shaft sleeve; the first gear gear is sleeved on the cover part through a bearing, and the second gear gear The passing bearing is vacantly sleeved on the sleeve part and located between the first actuator and the second support bearing.

In some embodiments, the first gear gear includes a ring gear part and a connecting part, the ring gear part is loosely sleeved on the cover part through a bearing, and the connecting part is connected to the first actuator. The coupling teeth on one side are fixedly connected; the gear hub of the first actuator is in transmission connection with the first installation position; the coupling teeth on the other side of the first actuator are fixedly connected to the second gear gear , the second gear is axially limited by the sleeve.

In some embodiments, the gear hub of the second actuator is in transmission connection with the sun gear shaft of the planetary row, and the coupling teeth on one side of the second actuator are in transmission connection with the sleeve part, the The coupling teeth on the other side of the second actuator are fixedly connected with the housing assembly.

In some embodiments, the sun gear shaft or the planet carrier shaft of the planet row is provided with a connection structure for transmission connection with the motor assembly.

In some embodiments, the planetary row is provided with a lubricating passage, and the outlet of the lubricating passage faces the planetary wheel bearing of the planetary row; the sun gear shaft of the planetary row is provided with a first hollow cavity penetrating in the axial direction , the planet carrier of the planetary row is provided with an oil collection cavity, and the first hollow cavity, the oil collection cavity and the lubricating passage are connected in sequence.

In some embodiments, the planetary carrier includes a planetary carrier shaft, a connecting plate, and a planetary wheel shaft connected in sequence, and the planetary carrier shaft is provided with the oil collection chamber and the first oil guide hole in communication, and the planetary wheel shaft There is a second oil guide hole;

The outer side of the connecting plate is provided with an oil guide; the first oil guide hole, the gap between the oil guide and the connecting plate, and the second oil guide hole are sequentially connected to form the lubrication channel.

In some embodiments, a support bearing is installed between the sun gear shaft and the ring gear shaft; the sun gear shaft is provided with at least one fourth oil guide hole communicating with the first hollow cavity, wherein The outlet of one of the fourth oil guide holes faces the support bearing.

In some embodiments, the input shaft assembly further includes an oil guide pipe, the oil guide pipe is installed through the first hollow cavity, and the end near the planet row protrudes into the oil collection chamber.

In some embodiments, the oil guide pipe is provided with a number of oil outlet holes distributed along the axial and/or radial intervals of the oil guide pipe; the distal planet row end of the oil guide pipe is provided with an oil outlet; the The oil outlet is a U-shaped groove and/or a round hole.

Based on the same inventive concept, the present application also provides a hybrid electric drive assembly, including:

shell assembly;

The above-mentioned input shaft assembly is installed inside the housing assembly.

In some embodiments, the hybrid electric drive assembly further includes a motor assembly connected to the housing assembly, and a rotor of the motor assembly is drive-connected to the sun gear shaft of the planetary row.

In some embodiments, the housing assembly includes a right housing, a left housing and an end cover connected in sequence, the right housing and the left housing enclose a shaft gear installation cavity, and the left housing The body and the end cover form a motor installation cavity; the input shaft assembly is located in the shaft tooth installation cavity, and the motor assembly is located in the motor installation cavity.

In some embodiments, the left housing is provided with a middle plate, and the middle plate is installed with a third support bearing for supporting the rotor of the motor assembly; one of the coupling teeth of the actuator is connected to the The middle plate is fixedly connected.

In some embodiments, the motor assembly includes a generator and a driving motor, and the rotor of the generator is in drive connection with the sun gear of the planetary row.

In some embodiments, a second hollow cavity is provided inside the rotor of the generator, and the second hollow cavity communicates with the first hollow cavity of the sun gear shaft of the planetary row.

Based on the same inventive concept, the present application also provides a vehicle, which is characterized by: including the above-mentioned hybrid electric drive assembly; or, including the above-mentioned input shaft assembly; or, including the above-mentioned ring gear shaft.

It can be seen from the above technical solution that the ring gear shaft provided by the present invention can be sleeved on the outer planetary row as a whole and act as a part of the planetary row. The ring gear shaft is installed on the housing assembly through a support bearing, and multiple The installation position of each component, specifically, the inner ring gear shaft includes a shaft sleeve part and a cover part, the shaft sleeve part is used to be sleeved on the sun gear shaft or the planet carrier shaft of the planetary row, and several It is used to install the first installation position of the actuator, or the assembly position for setting the support bearing, and the second installation position for setting the gear. The cover part is connected with the inner ring gear of the planetary row, and participates in the planetary row as a part of the planetary row. The inner hole profile and the outer profile of the cover part can be used as the assembly position for setting the support bearing or the second installation position for setting the gear. Therefore, by setting the ring gear shaft, the planetary gear transmission function, actuator installation, shift gear installation and necessary axial limit function can be integrated at the same time, thereby greatly improving the integration of the electric drive system and reducing the power consumption. The functional volume of the drive enables the electric drive system provided with the ring gear shaft to have more flexible layout and loading performance.

The invention provides a highly integrated planetary row input shaft assembly, which arranges and supports each system through the ring gear shaft, effectively reduces the arrangement space of the assembly, reduces the cost, and makes the structure more compact and the loadability better , making the product more competitive.

Description of drawings

Fig. 1 is a schematic structural view of the ring gear shaft in Embodiment 1 of the present invention.

Fig. 2 is a full sectional view of the ring gear shaft in Fig. 1 .

Fig. 3 is a schematic structural view of the input shaft assembly in Embodiment 2 of the present invention.

FIG. 4 is a schematic structural view of the internal lubricating channel of the input shaft assembly in FIG. 3 .

FIG. 5 is an overall structural diagram of the hybrid electric drive assembly in Embodiment 3 of the present application.

FIG. 6 is a schematic structural view of the hybrid electric drive assembly in FIG. 5 after the end cover is removed.

FIG. 7 is a schematic structural view of the hybrid electric drive assembly in FIG. 5 after the right housing is removed.

Explanation of reference numerals: 10-oil guide pipe, 11-oil outlet hole, 12-oil outlet; 20-oil guide member; 30-bush; 40-actuator, 41-gear hub, 42-coupling tooth, S1- First actuator, S2-second actuator; 50-first gear, 51-ring gear, 52-connection; 60-second gear; 70-circlip; 80-sleeve.

100-Planet row; 110-Sun gear shaft, 111-First hollow cavity, 1111-Oil storage chamber, 1112-Reaming section, 112-Fourth oil guide hole, 113-Bearing installation groove; 120-Planet carrier, 121- Planet carrier shaft, 122-connecting plate, 123-planetary wheel shaft, 124-oil collection chamber, 1241-large hole section, 1242-small hole section, 125-first oil guide hole, 126-second oil guide hole, 1261- Axial oil guide hole, 1262-radial oil guide hole, 127-third oil guide hole; 130-sun gear; 140-planetary gear; 150-internal gear; 160-lubrication channel; 171-planetary wheel bearing; 172-the first 1 planet carrier bearing; 173-second planet carrier bearing; 174-intermediate bearing; 175-first support bearing; 176-second support bearing; 177c-needle roller bearing used to install the second gear gear; 178-thrust bearing; 179-ball bearing.

200-internal gear shaft, 201-inner hole; 210-shaft sleeve; 220-cover, 221-gear sleeve, 222-baffle, 223-inner spline; 230-first installation position; 240- Assembly position, 241-inner hole wall; 250-second installation position; 260-limiting structure, 261-circlip groove, 262-end face, 263-bulge, 264-hole shoulder; 270-oil guide hole; 280- Oil guide groove.

1000-hybrid electric drive assembly; 300-housing assembly; 301-oil inlet channel; 302-shaft gear installation cavity; 303-motor installation cavity; 310-right housing; 320-left housing, 321-middle plate; 330 - end cap. 400-motor assembly, 401-generator, 402-drive motor; 410-rotor, 411-second hollow cavity; 500-shift mechanism assembly; 600-intermediate shaft gear assembly; 700-differential assembly ; 800-controller assembly; 900-input shaft assembly.

Detailed ways

In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

Example 1:

The embodiment of the present invention provides an inner ring gear shaft 200, which can be sleeved outside the planetary row 100 as a whole, and serves as a part of the planetary row 100. The inner ring gear shaft 200 is installed on the housing assembly through a support bearing Into 300, the mounting positions of multiple components can be set on it. 1 and 2, the ring gear shaft 200 includes a sleeve portion 210 and a cover portion 220. The sleeve portion 210 is a sleeve structure and can be sleeved on the shaft, such as the sun gear shaft 110 of the planetary row 100 or the planet carrier. Shaft 121. The axial dimension of the sleeve part 210 is relatively long, and several first installation positions 230 for installing the actuator 40 can be arranged on it in the axial direction, or the assembly positions 240 for setting the support bearing, and the second installation positions for setting the gear. Install bit 250. The cover part 220 is in drive connection with the ring gear 150 of the planetary row 100, and participates in the operation of the planetary row 100 as a part of the planetary row 100. The inner hole profile and the outer profile of the cover part 220 can be used as an assembly for setting the support bearing bit 240 or a second mounting bit 250 for setting gear. Therefore, by setting the ring gear shaft 200, the transmission function of the planetary row 100, the installation of the actuator 40, the installation of the shift gear and the necessary axial limit function can be integrated at the same time, thereby greatly improving the integration of the electric drive system. , reducing the functional volume of the electric drive, so that the electric drive system equipped with the ring gear shaft 200 has more flexible layout and loading performance.

The ring gear shaft 200 may be a one-piece structure, that is, the sleeve part 210 and the cover part 220 are integrally formed by casting or machining. The ring gear shaft 200 can also be a split structure, and the sleeve part 210 and the cover part 220 can be fixedly connected by means of welding, bonding, screwing and the like. In this embodiment, the ring gear shaft 200 is a one-piece structure formed by casting, and then the inner and outer surfaces are processed by machining, and its material can be metal materials such as stainless steel and cast aluminum.

The cover part 220 of the inner ring gear shaft 200 covers the main part of the planetary row 100 , and the sun gear 130 , the planetary gear 140 and the ring gear 150 of the planetary row 100 are all located in the inner hole of the cover part 220 . Specifically, the cover part 220 includes a gear sleeve part 221 and a baffle part 222 , the inner ring of the baffle part 222 is connected to the shaft sleeve part 210 , and the outer ring is connected to the gear sleeve part 221 . The structure of the sleeve portion 221 is similar to that of the sleeve portion 210 , both of which are sleeve structures, and the sleeve portion 221 is in transmission connection with the ring gear 150 of the planetary row 100 . The baffle part 222 may be an annular flat plate, an annular spherical shell, or a three-dimensional structure composed of multi-link connecting rods, and the specific structure of the baffle part 222 is not limited in this application. The shaft sleeve portion 210, the baffle plate portion 222, and the gear sleeve portion 221 may be of an integrated structure, or be fixedly connected by means of welding, bonding, screwing, or the like. The ring gear part 221 and the ring gear 150 may be in one-piece structure or keyed to realize power transmission, so that the ring gear shaft 200 can rotate together with the ring gear 150 of the planetary row 100 .

Specifically, in this embodiment, the gear sleeve part 221 is connected to the ring gear 150 through a spline, and the inner surface of the gear sleeve part 221 is provided with an inner spline 223, and the inner shape surface of the ring gear 150 is for meshing with the planetary gear 140. The teeth and outer surface of the ring gear are external splines, and the inner ring gear 150 is snapped into the inner spline 223 in the axial direction. The inner spline 223 of the part 221 is provided with a snap ring groove 261 , and after the snap ring 70 is installed in the snap ring slot 261 , the snap ring 70 can axially limit the other side of the ring gear 150 . In this way, it is ensured that the gear sleeve portion 221 and the ring gear 150 will not move relative to each other in the axial direction. And the snap ring 70 is a detachable structure, which will not affect the installation and disassembly of the ring gear 150 .

The multiple component installation positions on the ring gear shaft 200 mainly include a first installation position 230 for installing the actuator 40 , an assembly position 240 for setting a support bearing, and a second installation position 250 for setting a gear. The actuator 40 may be a synchronizer or a clutch, and the actuator 40 may be sleeved on the ring gear shaft 200 , or fixedly connected or driven connected with the ring gear shaft 200 . Support bearings are used to mount the ring gear shaft 200 on the housing assembly 300 . The gear can be a gear gear or a transmission gear that only plays a transmission role. The gear can be vacantly sleeved on the ring gear shaft 200 , or be fixedly connected or drivingly connected with the ring gear shaft 200 . In other embodiments, other component mounting positions may also be provided on the inner ring gear shaft 200 according to specific conditions, such as a component mounting position for installing an oil deflector, a component mounting position for installing a sensor, and the like.

Among the installation positions of the above-mentioned components, the first installation position 230 is all set on the sleeve part 210, mainly because the action of the actuator 40 requires a certain axial space, and the axial size of the sleeve part 210 compared with the cover part 220 Larger, able to meet the axial space required for the action of the actuator 40; On the sun gear 130 , the planetary gear 140 , and the ring gear 150 , the sleeve part 210 has a smaller radial dimension than the cover part 220 , which is convenient for arranging the actuator 40 .

In this embodiment, the function of the actuator 40 is to change the transmission ratio of the planetary row 100, for example, the ring gear 150 of the planetary row 100 is engaged with the sun gear shaft 110 to rotate together, the ring gear 150 is engaged with the planet carrier to rotate together, The planet carrier is engaged with the sun gear shaft 110 to rotate together, lock the ring gear 150 , lock the sun gear 130 , lock the planet gear 140 and so on. In this embodiment, the first installation position 230 is a key connection structure, so that the actuator 40 is in transmission connection with the ring gear shaft 200. Since the ring gear shaft 200 is in transmission connection with the ring gear 150 of the planetary row 100, the actuator 40 The movement of the ring gear 150 can be changed, such as engaging the ring gear 150 with the sun gear shaft 110 or the planet carrier, or locking the ring gear 150 .

A limiting structure 260 for axially limiting the actuator 40 is provided on the first mounting position 230 to prevent axial relative rotation between the actuator 40 and the ring gear shaft 200 . Specifically, in this embodiment, the actuator 40 is connected to the ring gear shaft 200 by a spline, that is, the key connection structure of the first mounting position 230 adopts an external spline, and the gear hub 41 and/or the coupling teeth 42 of the actuator 40 The inner ring is provided with inner splines. For the spline connection, the actuator 40 and the ring gear shaft 200 are limited by the retaining spring 70, and the corresponding limiting structure 260 is the retaining spring groove 261 provided on the external spline. And/or the coupling tooth 42 is stuck in the snap ring groove 261 after being installed in place.

For the assembly position 240 for setting the support bearing and the second installation position 250 for setting the gear, the working form of the support bearing and the gear is rotation, and no axial movement needs to occur, so it can be installed on the cover part 220 and / or on the sleeve portion 210 . Usually, a shaft requires at least two bearings to be installed and fixed, so the number of assembly positions 240 is also more than two, and more than two assembly positions 240 are distributed at intervals along the axial direction, that is, both the gear sleeve part 221 and the shaft sleeve part 210 are provided with There are assembly bits 240. Specifically, the assembly position 240 of the cover part 220 is the inner hole wall 241 of the tooth sleeve part 221, the assembly position 240 of the shaft sleeve part 210 is the polished rod section, and the support bearing is interference fit with the inner hole wall 241 and the polished rod section. Between the assembly position 240 of the gear sleeve part 221 and the installation position of the inner ring gear 150, there is a limit structure 260 for axially limiting the corresponding support bearing. Shaft shoulder limit, boss limit) or circlip limit. Referring to FIG. 2 , in this embodiment, a shoulder is formed between the inner hole wall 241 of the tooth sleeve portion 221 and the inner spline 223 , and the supporting bearing installed on the inner hole wall 241 is axially limited by the hole shoulder.

In some embodiments, the assembly position 240 of the sleeve part 210 is provided with a sleeve 80, which can compensate for the diameter difference between the support bearing and the polished rod section on the one hand, and can be used to limit the axial direction of the surrounding structural parts on the other hand. The shaft sleeve 80 is press-fitted with the corresponding polished rod section with interference, and the support bearing is installed with the shaft sleeve 80 with interference. When the shaft sleeve 80 is used to limit the axial position of the surrounding structural parts, the surrounding structural parts also play the role of axially limiting the shaft sleeve 80 .

In this embodiment, the ring gear shaft 200 is suitable for a planetary gear transmission with gears, for example, a four-speed transmission requires at least two actuators 40 and at least two gears. Take "a hybrid drive system" (publication number CN113232501A) applicable to the invention application as an example, the hybrid drive system realizes the fourth gear of the engine through two synchronizers and two gears, two synchronizers and two gears The gears are respectively marked as: the first actuator S1, the second actuator S2, the first gear 50 and the second gear 60. Both the first actuator S1 and the second actuator S2 are synchronizers. The first gear gear 50 is a large ring gear to realize the third gear and the fourth gear of the engine; the second gear gear 60 is a small gear ring to realize the engine one gear gear and engine second gear.

The first gear gear 50 and the second gear gear 60 are respectively installed in the two second installation positions 250, since the first gear gear 50 and the second gear gear 60 are both hollowly sleeved on the ring gear shaft 200, so The inner holes of the first gear 50 and the second gear 60 are equipped with bearings, such as ball bearings, as shown in FIG. 3 . In other embodiments, if the gear is in transmission connection with the ring gear shaft 200 , no bearing is required. In order to reduce the axial length of the ring gear shaft 200, both the sleeve part 221 and the sleeve part 210 are provided with a second installation position 250, that is, the first gear gear 50 is idly sleeved on the sleeve part 221 through a bearing, and the second The second gear 60 is idly sleeved on the sleeve part 210 through a bearing.

The second mounting position 250 of the ring gear shaft 200 is provided with a limiting structure 260 for axially limiting the gear or the bearing of the gear. The limiting structure 260 can be a limiting boss, a limiting step, or a Groove of snap ring 70. If the limiting structure 260 is used for axially limiting the bearing, usually a limiting boss, a limiting step, and a structural end face are selected; if the limiting structure 260 is used for axially limiting the gear, the gear and the inner The transmission connection of the ring gear shaft 200 , such as a spline connection, generally selects the retaining spring 70 to limit the axial direction.

In the design of the limit structure 260, in order to facilitate the installation of structural parts such as the actuator 40, gears, bearings, etc., in this embodiment, the outer surface of the sleeve part 210 is designed as a stepped shaft, specifically from the far end of the planetary row to the near end. At the end of the planetary row, the outer diameter of the sleeve portion 210 tends to increase, and each structural member is fitted on the sleeve portion 210 one by one. The stepped shaft itself can form several limiting steps for axial positioning. In addition, the stepped shaft is also provided with several convex edges 263 for axially limiting the shaft sleeve 80 and bearings.

In this embodiment, the ring gear shaft 200 is suitable for a planetary gear transmission with four gears, so there are two first installation positions 230 , two second installation positions 240 , and two second installation positions 250 . In order to ensure that the two actuators 40 installed on the two first installation positions 230 have sufficient axial movement space, the two first installation positions 230 are distributed at both ends of the sleeve part 210. It should be noted that the first The installation position 230 can be used for installing all the components of the actuator 40 , or only for installing some components of the actuator 40 , such as only installing the gear hub 41 of the synchronizer or the coupling tooth 42 on one side. In order to reduce the axial dimension of the ring gear shaft 200 and improve the carrying performance of the hybrid gearbox provided with the ring gear shaft 200, in this embodiment, the two assembly positions 240 and the two second installation positions 250 are respectively It is provided on the sleeve part 210 and the cover part 220 .

Since multiple bearings and gears need to be installed on the ring gear shaft 200 of this embodiment, it is necessary to ensure the lubrication requirements of the multiple bearings and gears. Specifically, splash lubrication or active lubrication can be used. Since each bearing of the ring gear shaft 200 1. The arrangement of the gears is compact and mutually forms the effect of axial limit. Therefore, it may be difficult to achieve the expected lubricating effect only through the lubricating oil splashed from the outside. Therefore, this embodiment adopts the active lubricating scheme.

Specifically, the sleeve part 210 is provided with at least one oil guide hole 270 penetrating through the wall of the sleeve part 210. Usually, a plurality of oil guide holes 270 are arranged along the circumferential direction, and multiple oil guide holes 270 located in the same cross-section are one multiple groups of oil guide holes 270 may be provided on the sleeve portion 210 along its axial direction. In this embodiment, the outer surface of the shaft sleeve part 210 is provided with an oil guide groove 280 connected to the oil guide hole 270, and the oil guide groove 280 is connected with a group of oil guide holes 270, and the specific number of the oil guide groove 280 is determined according to actual needs. . The oil guide groove 280 is a concave groove. By setting the oil guide groove 280, the lubricating oil flowing out of the oil guide hole 270 can be evenly distributed in the circumferential direction. In addition, since the oil guide groove 280 is a groove, the groove can also be used as an inner ring gear The undercut groove when machining the outer profile of the shaft 200.

In addition, in some embodiments, an oil guide hole 270 may also be provided on the cover part 220, and the oil guide hole 270 may be optionally provided on the tooth cover part 221 and/or the baffle part 222, so as to facilitate the lubricating oil entering and leaving the cover part 220. Bore. Referring to Fig. 2, in this embodiment, a number of oil guide holes 270 can be provided on the baffle part 222, and the oil guide holes 270 are arranged to be inclined outward along the splashing direction, so that the splashed lubricating oil can pass through the oil guide holes when the planetary row 100 rotates. 270, lubricate the structural parts outside the ring gear shaft 200.

Example 2:

Based on the same inventive concept, this embodiment provides an input shaft assembly 900, which can be applied to a hybrid electric drive assembly or a common gearbox, and the input shaft assembly 900 is connected to the output of the engine shaft connection. Referring specifically to FIGS. 3 and 4 , the input shaft assembly 900 includes a planetary row 100 , at least one actuator 40 , at least one support bearing, at least one gear and the ring gear shaft 200 of the first embodiment above. At least one actuator 40 of the input shaft assembly 900 is installed on at least one first installation position 230 of the ring gear shaft 200; at least one support bearing of the input shaft assembly 900 is arranged on at least one of the ring gear shaft 200 On the assembly position 240 ; at least one gear of the input shaft assembly 900 is disposed on at least one second installation position 250 of the ring gear shaft 200 . That is to say, the number of the first installation location 230 , the installation location 240 and the second installation location 250 of the inner ring gear shaft 200 matches the number of the actuator 40 , supporting bearings and gears to be installed. Usually, a shaft requires two supporting bearings to be installed and supported; the number of actuators 40 is positively related to the gear design, for example, one actuator 40 realizes two gears; the number of gears is related to the design of the transmission, and the gears can be specifically related to the execution The mechanism 40 cooperates to realize gear shifting, and can also be used as a transmission gear to cooperate with other gears to realize speed ratio adjustment.

Since the input shaft assembly 900 integrates the actuator 40, the planetary row 100 and the gear at the same time, and the above-mentioned structure is integrated through the ring gear shaft 200, the integration degree is high and the axial dimension is small. The planetary row 100 is installed in the internal space of the ring gear shaft 200, and the actuator 40, bearings and gears are installed in the external space, so that the input shaft assembly 900 can be assembled with the housing as an independent supply set during assembly, reducing the assembly cost. difficulty.

In this embodiment, the input shaft assembly 900 is a sub-assembly of a single planetary row 100 transmission mechanism capable of realizing the fourth gear of the engine. There are two actuators 40, namely the first actuator S1 and the second actuator S2. The first actuator S1 and the second actuator S2 can use synchronizers (unilateral or bilateral) or clutches as required. There are also two support bearings, which are respectively the first support bearing 175 and the second support bearing 176. The first support bearing 175 and the second support bearing 176 can adopt ball bearings, needle bearings, thrust bearings, etc., and the present embodiment adopts ball bearings. bearings. Two gears are also provided, namely the first gear gear 50 and the second gear gear 60 respectively, both of the first gear gear 50 and the second gear gear 60 cooperate with the actuator 40 to realize gear shifting.

Specifically, the first actuator S1 and the second actuator S2 are distributed at both ends of the sleeve part 210 . The first actuator S1/second actuator S2 can be set to selectively connect the sun gear shaft 110 and the ring gear shaft 200, selectively connect the planet carrier shaft 121 and the ring gear shaft 200, and selectively connect according to actual needs. The ring gear shaft 200 is connected to the first gear 50 or alternatively connects the ring gear shaft 200 to the second gear 60 . In this embodiment, the first actuator S1 adopts a synchronizer, which has a gear hub 41 and coupling teeth 42 on both sides, and the gear hub 41 of the first actuator S1 is in transmission connection with the first installation position 230; The coupling teeth 42 on one side are fixedly connected to the first gear 50; the coupling teeth 42 on the other side of the first actuator S1 are fixedly connected to the second gear 60, and the first actuator S1 is used to connect the ring gear The shaft 200 is optionally connected with the first range gear 50 or the second range gear 60 . The second actuator S2 also adopts a synchronizer, which has a gear hub 41 and coupling teeth 42 on both sides. The gear hub 41 of the second actuator S2 is in transmission connection with the sun gear shaft 110 of the planetary row 100. One side of the second actuator S2 The coupling tooth 42 of the second actuator S2 is connected to the shaft sleeve part 210 in transmission, and the coupling tooth 42 on the other side of the second actuator S2 is fixedly connected to the housing assembly 300. The second actuator S2 is used to optionally connect the sun gear shaft 110 to the inner The ring gear shaft 200 or the housing assembly 300 are connected to realize different speed ratio outputs of the planetary row 100 . In order to improve the axial bearing capacity of the input shaft assembly 900 , a thrust bearing is provided between the gear hub 41 of the second actuator S2 and the housing assembly 300 , and the thrust bearing is sleeved on the sun gear shaft 110 .

Specifically, the first support bearing 175 and the second support bearing 176 are installed on the shaft sleeve part 210 and the cover part 220 respectively, the first support bearing 175 is arranged in the inner hole of the cover part 220, and the second support bearing 176 passes through the shaft sleeve 80 is located between the first actuator S1 and the second actuator S2, and the first support bearing 175 and the second support bearing 176 mainly support the inner ring gear shaft 200, so both ball bearings can be used. The first support bearing 175 is axially limited by the end face 262 of the first installation position 230, that is, the hole shoulder 264 formed by the first installation position 230 and the support position of the cover part 220; the second support bearing 176 is set on the sleeve 80 The axial limit of the boss. The inner ring of the first support bearing 175 and the outer ring of the second support bearing 176 are respectively interference fit with the bearing installation holes of the housing assembly 300 .

Specifically, the first gear gear 50 is vacantly sleeved on the cover portion 220 through the needle bearing 177a, and the second gear gear 60 is idly sleeved on the sleeve portion 210 through the needle bearing 177c, and is located between the first actuator S1 and Between the second supporting bearings 176, both the first gear gear 50 and the second gear gear 60 are ring gears, and the bearings installed in their inner holes are needle bearings, and the first gear gear 50 and the second gear gear 60 can freely rotate relative to the ring gear shaft 200.

In this embodiment, the first gear gear 50 is a large ring gear, and the first gear gear 50 must not only meet the diameter requirements of being able to fit on the cover part 220, but also meet the first gear ring installed on the sleeve part 210. The actuator S1 is connected. Therefore, the first gear gear 50 is specifically configured to include a ring gear part 51 and a connecting part 52. The ring gear part 51 is similar in structure to the gear sleeve part 221 of the inner ring gear shaft 200, both of which are sleeve structures. The structure of the connecting portion 52 is similar to that of the baffle portion 222 of the ring gear shaft 200 and both are annular plate structures. The ring gear part 51 and the connecting part 52 can be integrally formed, or connected and fixed by welding or threaded fasteners. The ring gear part 51 is vacantly sleeved on the cover part 220 through the needle bearing 177a, and the bearing is axially limited by the flange 263 provided on the outer surface of the cover part 220. The connection part 52 is fixedly connected to the coupling tooth 42 on one side of the first actuator S1, and the connection part 52 and the coupling tooth 42 of the first actuator S1 can be integrally formed, welded or connected by transmission. The second gear 60 is fixedly connected to the coupling teeth 42 on the other side of the first actuator S1, and the second gear 60 and the coupling teeth 42 of the first actuator S1 can be integrally formed, fixed by welding or connected by transmission. . The second gear gear 60 is axially limited by the sleeve 80 of the second support bearing 176 .

In order to further improve the axial bearing capacity of the input shaft assembly 900, as shown in FIG. Thrust bearing 178. That is to say, the first gear gear 50 is sleeved on the ring gear shaft 200 through the needle bearing 177 a and the thrust bearing 178 , and axially limited by the thrust bearing 178 and the end surface 262 outside the baffle portion 222 . The cover part 220 of the ring gear shaft 200 is provided with an oil guide hole 270 through the wall thickness, so that the lubricating oil splashed in the planetary row 100 can enter the first gear gear 50 and the cover through the oil guide hole 270 on the cover part 220. In the gap between the parts 220, the needle bearing 177a and the thrust bearing 178 therein are lubricated.

Referring to FIG. 3 , in the input shaft assembly 900, the sun gear shaft 110 or the planet carrier shaft 121 of the planetary row 100 is connected to the engine to realize engine power input, and the ring gear shaft 200 is sleeved on the output planet of the planetary row 100 On the carrier shaft 121 or the sun gear shaft 110 , for example, the planetary row 100 adopts the sun gear shaft 110 as input, then the ring gear shaft 200 and the planet carrier shaft 121 are output, and the ring gear shaft 200 is correspondingly sleeved on the planet carrier shaft 121 . If the planetary row 100 is input by the planet carrier shaft 121 , then the ring gear shaft 200 and the sun gear shaft 110 are output, and the ring gear shaft 200 is correspondingly fitted on the sun gear shaft 110 . The cover portion 220 of the inner ring gear shaft 200 is in transmission connection with the inner ring gear 150 of the planetary row 100 , and specifically can be integrally formed, welded or keyed. The ring gear shaft 200, the planet carrier shaft 121, and the sun gear shaft 110 need to rotate during work, and there is a speed difference under certain working conditions, so it is necessary to install between the ring gear shaft 200 and the sun gear shaft 110 or the planet carrier shaft 121 For the bearing, the inner ring of the bearing is sleeved on the sun gear shaft 110 or the planet carrier shaft 121 , and the inner ring gear shaft 200 is sleeved on the outer ring of the bearing. In this embodiment, the ring gear shaft 200 is sleeved on the sun gear shaft 110 through two needle bearings 177b.

In some embodiments, the input shaft assembly 900 is applied to a hybrid electric drive assembly and has a parallel mode of engine driving and motor driving, the sun gear shaft 110 or the planetary carrier of the planetary row 100 of the input shaft assembly 900 The shaft 121 is connected with the motor assembly 400. For example, the planetary row 100 adopts the planetary carrier shaft 121 as input, the ring gear shaft 200 and the sun gear shaft 110 as output, and the ring gear shaft 200 is set on the sun gear shaft 110, and the sun gear shaft 110 is provided with There is a connection structure for transmission connection with the motor assembly 400; if the planetary row 100 adopts the sun gear shaft 110 as input, and the ring gear shaft 200 and the planet carrier shaft 121 are used as output, then the ring gear shaft 200 is provided with a motor assembly. The connection structure of the 400 transmission connection. In this embodiment, the planetary row 100 of the input shaft assembly 900 uses the planet carrier shaft 121 as the input, and the ring gear shaft 200 and the sun gear shaft 110 as the output technical solution, and the ring gear shaft 200 is sleeved on the sun gear shaft 110 .

The planetary row 100 is the main part of the power distribution. The lubrication of the planetary row 100 is an important condition to ensure the normal operation of the input shaft assembly 900. The main lubrication requirement of the planetary row 100 lies in the planetary wheel bearing 171. On the one hand, the number of planetary wheel bearings 171 is large , widely distributed, on the other hand, since the installation position of the planet wheel bearing 171 is located in the area surrounded by the planet carrier 120, and between the planet wheel 140 and the planet wheel shaft 123, it is blocked by the planet wheel 140 and the planet carrier 120, It is difficult for lubricating oil to enter the installation place of the planetary wheel bearing 171 , so the planetary wheel bearing 171 is prone to ablation, which affects the use of the entire planetary row 100 .

In order to improve the lubrication of the planetary row 100, referring to Fig. 4, in the present embodiment, the planetary row 100 is provided with a lubricating passage 160, and the sun gear shaft 110 of the planetary row 100 is provided with a first hollow cavity 111 penetrating in the axial direction, and the sun gear shaft 110 It can be integrally formed with the sun gear 130 of the planetary row 100 , or connected with a key. In this embodiment, the sun gear shaft 110 and the sun gear 130 are integrally formed. The planet carrier 120 of the planetary row 100 is provided with an oil collection chamber 124 , the first hollow chamber 111 , the oil collection chamber 124 and the lubricating channel 160 communicate in sequence, and the outlet of the lubricating channel 160 faces the planet wheel bearing 171 of the planetary row 100 . In order to facilitate the lubrication of the external structure of the sun gear shaft 110, the sun gear shaft 110 is provided with a number of fourth oil guide holes 112 that communicate with the first hollow cavity 111, and the outlet of one of the fourth oil guide holes 112 faces the sun gear shaft 110 and the inner gear. Bearings between ring shafts 200.

Specifically, the lubricating channel 160 of the planet carrier 120 can be an oil channel opened in the base material of the planet carrier 120, or an oil channel surrounded by external components, which can meet the requirement of sending lubricating oil into the installation place of the planet wheel bearing 171. That's it. In this embodiment, the planet wheel bearing 171 is a needle roller bearing, specifically, it may be a full needle roller bearing or a steel cage needle roller bearing. The planet wheel bearing 171 adopts a double-row needle roller bearing, and a gasket is arranged in the middle. The gasket will form a gap with the planet wheel shaft 123 in the radial direction to ensure that lubricating oil can enter the needle roller bearing and lubricate the roller surface of the needle roller bearing.

Please refer to Fig. 4, in the present embodiment, the planet carrier 120 comprises the planet carrier shaft 121 connected in sequence, the connection plate 122 and several planet wheel shafts 123, the planet wheel 140 is sleeved on the planet wheel shaft 123, between the planet wheel 140 and the planet wheel shaft 123 Planetary gear bearings 171 are installed, and the two sides of the planetary gear 140 mesh with the gears of the sun gear 130 and the gears of the ring gear 150 respectively through gears. The planet carrier shaft 121 is located at the center of the connecting plate 122 , and the planet wheel shafts 123 are centered on the planet carrier shaft 121 and evenly distributed along the circumferential direction. The planetary carrier shaft 121 and the connecting plate 122 can be detachably connected by threaded fasteners, buckle structures, etc., or fixed by welding, or the planetary carrier shaft 121 and the connecting plate 122 are of an integrated structure. In this embodiment, the planetary carrier shaft 121 It is mounted on the connecting plate 122 by interference pressing. The connecting plate 122 and the planetary wheel shaft 123 can also be detachably connected by threaded fasteners, buckle structures, etc., or fixed by welding, or the connecting plate 122 and the planetary wheel shaft 123 have an integrated structure, which is not limited in this application. The overall external shape and outline of the planetary carrier 120 are not limited in this application, for example, the planetary carrier 120 may adopt a cage structure.

Specifically, the planet carrier shaft 121 is provided with a connected oil collection chamber 124 and a first oil guide hole 125 , the oil collection chamber 124 is located at the center of the planet carrier shaft 121 , preferably coaxial with the planet carrier shaft 121 . The planet wheel shaft 123 is provided with a second oil guide hole 126 , and the outlet of the second oil guide hole 126 faces the planet wheel bearing 171 of the planet row 100 . An oil guiding member 20 is provided outside the connecting plate 122 , the first oil guiding hole 125 , the gap between the oil guiding member 20 and the connecting plate 122 , and the second oil guiding hole 126 communicate in sequence to form a lubricating channel 160 . The oil guiding member 20 guides the lubricating oil thrown out from the first oil guiding hole 125 in the oil collecting chamber 124 to the second oil guiding hole 126 under centrifugal action.

In this embodiment, an intermediate bearing 174 is provided between the planetary carrier shaft 121 and the sun gear shaft 110. The intermediate bearing 174 adopts a thrust bearing, which can bear a relatively large axial force. On the carrier shaft 121 , the thrust bearing can meet the working requirement that there is a speed difference between the planetary carrier 120 and the sun gear shaft 110 under certain working conditions of the planetary row 100 . The intermediate bearing 174 is specifically located at the end of the sun gear shaft 110. In some embodiments, a concave bearing installation groove 113 may be provided at the end of the sun gear shaft 110, and the bearing installation groove 113 communicates with the first hollow cavity 111. , so that the internal space of the intermediate bearing 174 communicates with the first hollow cavity 111 , and the lubricating oil in the first hollow cavity 111 can enter the intermediate bearing 174 .

The second oil guide hole 126 may be a channel extending radially and/or axially along the planet wheel shaft 123, or a channel extending circumferentially along the planet wheel shaft 123, that is to say, the second oil guide hole 126 may be an axial Straight passages, radial straight passages, oblique straight passages, curved passages, etc., are not limited in this application. Specifically, in this embodiment, the second oil guide hole 126 includes an axial oil guide hole 1261 extending axially along the planetary wheel shaft 123 and at least one radial oil guide hole 1262 extending radially along the planetary wheel shaft 123. The radial oil guide hole 1262 The outlet of the lubricating channel 160 constitutes the outlet. The number of radial oil guide holes 1262 depends on the size of the planetary wheel bearing 171, and is usually set to more than two. The outlets of more than two radial oil guide holes 1262 are spaced and evenly distributed along the circumferential surface of the planetary wheel shaft 123, for example, the second The oil guide hole 126 includes an axial oil guide hole 1261 extending axially along the planetary wheel shaft 123 and four radial oil guide holes 1262 extending radially along the planetary wheel shaft 123. The four radial oil guide holes 1262 are distributed at 90° to each other to ensure oil The product reaches the planetary wheel bearing 171, avoiding the sintering of the entire planetary row 100 due to insufficient lubrication of the planetary wheel bearing 171. In some embodiments, the inlet of the axial oil guide hole 1261 is configured as a flaring, preferably a circular flaring, to reduce flow resistance. Along the axial direction of the planetary wheel shaft 123 , the diameter of the flaring hole gradually increases from the middle to the end, so that lubricating oil can enter the axial oil hole 1261 .

In some embodiments, the first planet carrier bearing 172 is installed on the planet carrier 120, and the first planet carrier bearing 172 is arranged in the lubricating channel 160, and the internal space of the first planet carrier bearing 172 communicates with the lubricating channel 160 for lubrication. oil flow. 3 and 4, the first planet carrier bearing 172 is installed on the planet carrier shaft 121 and is close to the connecting plate 122 of the planet carrier 120. The first planet carrier bearing 172 is a thrust bearing, and the loose ring of the thrust bearing is connected to The plate 122 is in contact, and the tight ring of the thrust bearing is connected and/or in contact with an external fixed member (such as the housing assembly 300 for mounting the planetary row 100 ), so that the planetary row is axially stable. A channel for the circulation of lubricating oil can be formed between the loose ring and the tight ring. When the lubricating oil circulates between the loose ring and the tight ring, it can also lubricate the rollers of the thrust bearing. Of course, in other embodiments, the first planetary carrier bearing 172 can also be arranged at other positions of the planetary carrier 120 , completely separated from the lubricating channel 160 , so as to avoid flow resistance generated by the internal structure of the first planetary carrier bearing 172 .

In some embodiments, in order to improve the rotation stability of the planet carrier 120, a second planet carrier bearing 173 is installed on the planet carrier shaft 121, and the second planet carrier bearing 173 adopts a needle bearing, for example, the planet carrier 120 passes through the second The planet carrier bearing 173 is installed in the housing assembly 300 (specifically, the right housing 310 ). The second planet carrier bearing 173 also needs to be lubricated during operation. For this reason, the planet carrier shaft 121 is provided with a third oil guide hole 127 communicating with the oil collection chamber 124, and the outlet of the third oil guide hole 127 faces the second planet carrier bearing. 173. In general, the oil collection cavity 124 is required to be able to accommodate the end of the oil guide pipe 10 near the planetary row 100 and store a certain amount of oil for delivery to the third oil guide hole 127 . Considering that the lubricating oil required by the second planetary carrier bearing 173 is less than that of the planetary wheel bearing 171, in order to ensure sufficient oil supply for the planetary wheel bearing 171, in some embodiments, the oil collection chamber 124 has a stepped hole structure, the size of which is The hole section 1241 is used to accommodate the end of the oil guide pipe 10 near the planetary row 100 , and the small hole section 1242 communicates with the third oil guide hole 127 .

Due to axial manufacturing and processing errors in the planet carrier 120 and the sun gear shaft 110 of the planetary row 100, there is usually a certain gap between the sun gear shaft 110 and the planet carrier 120, and in some extreme cases, the lubricating oil that flows into this part A large amount will leak out through this gap. In order to solve the above problems, in this embodiment, the sun gear shaft 110 is embedded with the oil guide pipe 10, and the oil guide pipe 10 is installed through the inside of the sun gear shaft 110 of the planetary row 100, specifically installed through the first hollow cavity 111, and the oil guide pipe 10 The end near the planet row 100 protrudes into the oil collection chamber 124 to guide the oil in the sun gear shaft 110 into the oil collection chamber 124 of the planet carrier. By setting the oil guide pipe 10, in the case of a relatively long axial oil guide passage, the oil guide pipe 10 is used to transfer the lubricating oil from the lubricating oil inlet at the far end of the planetary row 100 to the planetary carrier 120 of the planetary row 100, which can avoid the The centrifugal force formed by the high-speed operation of the sun gear shaft 110 throws the oil out and cannot reach the planetary row 100, and the end of the oil guide pipe 10 near the planetary row extends into the oil collection chamber 124, which can reduce the gap between the sun gear shaft 110 and the planetary carrier 120. Leakage of lubricating oil in the gap. The lubricating oil circulates in the lubricating channel 160 and finally flows to the planetary wheel bearings 171 to lubricate the bearings of each planetary wheel 140 to ensure the sufficient amount of oil in the bearings and avoid vehicle safety problems caused by the ablation of the entire planetary row 100 .

The oil guide pipe 10 is provided with a plurality of oil outlet holes 11 distributed along the axial and/or radial intervals of the oil guide pipe 10 . Along the axial direction of the guide tube, there are usually a plurality of oil outlet holes 11, and the hole diameter and hole distance of each oil outlet hole 11 are the same. A plurality of oil outlet holes 11 located at the same axial position can also be provided, and the plurality of oil outlet holes 11 located at the same axial position are distributed at intervals along the circumferential direction, so that the oil can evenly flow to the first hollow of the sun gear shaft 110 cavity 111. An additional oil hole 11 can also be opened at the axial position of the oil guide pipe 10 corresponding to the installation position of the bearing.

In some embodiments, more than one oil outlet 12 is provided at the end of the outer planetary row 100 of the oil guide pipe 10. Since the oil outlet 12 is opened on the pipe wall of the oil guide pipe 10, it can discharge oil radially and reduce resistance. It is convenient for oil to enter the lubricating channel 160 . The oil outlet 12 can be configured as a groove with an opening or a complete hole, for example, the oil outlet 12 can be a U-shaped groove or a round hole. The number of oil outlets 12 is not limited in this application. For example, if the number of oil outlets 12 is set to three, the shapes of the three oil outlets 12 may be the same or different.

Since the inner diameter of the first hollow chamber 111 is larger than the outer diameter of the oil guide pipe 10, in order to ensure that the oil guide pipe 10 is stably installed in the first hollow chamber 111, in some embodiments, at least one bushing 30 is sleeved on the oil guide pipe 10 , the bushing 30 fills the gap between the oil guide pipe 10 and the cavity wall of the first hollow cavity 111 . The bushing 30 plays the role of supporting the oil guide pipe 10, and the material of the bushing 30 is copper or composite plastic.

Applications:

Taking the input shaft assembly 900 applicable to the invention application "a hybrid drive system" (publication number CN113232501A) as an example, the structure of the input shaft assembly 900 is as follows:

The ring gear shaft 200 is respectively supported on the right housing and the left housing of the housing assembly 300 through ball bearings (first support bearing 175 ) and ball bearings (second support bearing 176 ) installed on the sleeve 80 . On the outer side of the ring gear shaft 200, the large ring gear (the first gear gear 50) is welded together with the coupling teeth 42 on the side of the first synchronizer (the first actuator S1), and through the needle bearing 177a and the thrust The bearing 178 is set on the ring gear shaft 200 to freely rotate around the ring gear shaft 200, the needle bearing 177a is axially limited by the shaft shoulder, and the thrust bearing 178 cooperates with the end face 262 of the ring gear shaft 200 for axial positioning. limit. The gear hub 41 of the first synchronizer is connected to the external spline of the inner ring gear shaft 200 through the inner spline for torque transmission, and the pair of ring rings 70 installed in the ring groove 261 through the end face 262 of the ring gear shaft 200 The gear hub 41 of the first synchronizer is axially limited; the small ring gear (second gear gear 60) is welded together with the coupling tooth 42 of the first synchronizer and installed on the inner ring gear shaft 200 through the needle bearing 177c The outer side of the shaft sleeve part 210 is free to rotate around the ring gear shaft 200, and the pinion ring gear (second gear gear 60) is axially limited by the sleeve 80 press-fitted on the shaft diameter of the ring gear shaft 200. The needle bearing 177c is axially limited by the shaft shoulders on both sides; the coupling teeth 42 on one side of the second synchronizer (second actuator S2) are connected with the external splines of the inner ring gear shaft 200 through internal splines to perform power transmission. In transmission, the coupling tooth 42 of the second synchronizer is axially limited by the end surface 262 of the shaft sleeve 80 and the snap ring 70 installed in the snap ring groove 261 .

Inside the ring gear shaft 200 , the sun gear shaft 110 is supported in the inner bore 201 of the ring gear shaft 200 via two needle bearings 177 b. The gear hub 41 of the first synchronizer is connected with the external spline of the sun gear shaft 110 through an internal spline to transmit torque. The external spline of the end of the sun gear shaft 110 is connected with the internal spline of the motor shaft of the generator 401 for power transmission; the motor shaft is supported on the middle plate 321 of the left housing 320 through the ball bearing 179 . The inner ring gear 150 cooperates with the inner spline of the inner ring gear shaft 200 through the outer spline, and is connected with the inner ring gear shaft 200 to rotate together. The snap ring 70 in the groove 261 is axially limited. The ring gear 150 supports the entire planetary gear system on the ring gear shaft 200 by meshing with the planet gears. The planetary carrier 120 is installed on the right housing through a needle roller bearing (the second planetary carrier shaft 121 bears 173), the planetary carrier shaft 121 is mounted on the connecting plates 122 on both sides of the planetary carrier 120 through interference press, and the planetary gear 140 is rolled by Needle bearings (planetary gear bearings 171 ) are mounted on the carrier shaft 121 , and the planetary gears 140 mesh with the ring gear 150 and the sun gear 130 , respectively.

In the input shaft assembly 900 provided in this embodiment, the entire planetary train system integrates the first actuator S1 and the second actuator S2 through the ring gear shaft 200, the 1/2 gear ring gear (second gear 60) and The 3/4 gear ring gear (the first gear gear 50), and the planetary row 100 are connected to the motor through the inner support sun gear shaft 110, and also integrate the planetary gear bearing 171, the actuator 40, the gear gear and related bearings etc. lubrication system and motor cooling system. The inner ring gear shaft 200 provides support structures for each system through the inner and outer profiles, and is installed on the left and right housings of the housing assembly through the first support bearing 175 and the second support bearing 176 on both sides, so that the input shaft assembly 900 Can be highly integrated together, reducing the arrangement and installation positions and interfaces of other parts, so that the axial and radial dimensions of the electric drive system equipped with the input shaft assembly 900 can be reduced, reducing the functional volume of the electric drive system, reducing Cost and enhance its carrying capacity, making the product more competitive.

Example 3:

Based on the same inventive concept, this embodiment provides a hybrid electric drive assembly 1000, referring to Fig. 5 to Fig. 7, the hybrid electric drive assembly 1000 includes the housing assembly 300 and the input shaft assembly of the above-mentioned embodiment 2 900 , the input shaft assembly 900 is installed inside the casing assembly 300 . The structure of the housing assembly 300 is designed according to the structure of the input shaft assembly 900, and it only needs to meet the installation requirements of the input shaft assembly 900, and the specific structure is not limited in this application.

The hybrid electric drive assembly 1000 also includes a motor assembly 400 connected to the housing assembly 300 , and the motor assembly 400 may be configured to include only one motor, or more than two motors. The rotor of at least one motor of the motor assembly 400 is in transmission connection with the sun gear shaft 110 of the planetary row 100 to realize power transmission between the motor and the planetary row 100 . Specifically, in this embodiment, the motor assembly 400 includes a generator 401 and a driving motor 402, and the rotor of the generator 401 is in transmission connection with the sun gear shaft 110 of the planetary row 100, for example, the rotor of the generator 401 is connected with the sun shaft 110 of the planetary row 100 The axle 110 is splined.

The motor assembly 400 can be integrated and inside the housing assembly 300 , or the motor assembly 400 can be placed outside. In order to improve the integration of the hybrid electric drive assembly 1000, the present embodiment adopts a solution with a built-in motor. Specifically, the housing assembly 300 includes a right housing 310, a left housing 320 and an end cover 330 connected in sequence, and the right housing The body 310 and the left housing 320 form a shaft tooth installation cavity 302, the planet row 100 is located in the shaft tooth installation cavity 302, and the planet carrier shaft 121 is supported on the right housing 310 through the first planet carrier bearing 172 and the second planet carrier bearing 173. superior. The left housing 320 and the end cover 330 enclose a motor installation chamber 303 , and the motor assembly 400 is located in the motor installation chamber 303 . The rotor 410 of the generator 401 is supported on the left casing 320 and the end cover 330 through two bearings.

In this embodiment, the rotor 410 of the generator 401 is provided with a second hollow cavity 411 penetrating in the axial direction. Set coaxially with the planetary row 100, the lubricating oil introduced by the oil inlet channel 301 of the housing assembly 300 is introduced into the first hollow cavity 111 of the planetary row 100 through the second hollow cavity 411, and the oil guide pipe 10 of the planetary row lubrication structure is installed in the second hollow cavity 411. In the second hollow cavity 411 and the first hollow cavity 111, the end of the far planetary row 100 of the oil guide pipe 10 is directly connected to the oil inlet passage 301 of the housing assembly 300, and the end of the oil guide pipe 10 near the planetary row 100 is connected to the end of the planet carrier 120. The oil collection chamber 124 is directly butted in communication. By connecting the rotor 410 of the motor assembly 400 in series with the internal oil circuit of the planetary row 100, the rotor of the motor acts as a pipeline for lubricating oil, which simplifies the structure of the lubrication system and improves the integration of the hybrid electric drive assembly 1000 and the overall vehicle performance. Carryability.

The end cover 330 is provided with an oil inlet passage 301, and the bottom of the left housing 320 forms an oil pan, and the lubricating oil after lubricating the planetary row 100 falls into the oil pan, and the external oil pump provides pumping power, so that the lubricating oil Circulate in the oil pan, the oil inlet channel 301 , the oil guide pipe 10 and the lubricating channel 160 .

Since the rotor of the generator 401 , the sun gear shaft 110 of the planetary row 100 , and the ring gear shaft 200 all need to be provided with bearings for installation and support. In order to increase the bearing mounting holes, in this embodiment, the left housing 320 is provided with a middle plate 321, which is a cover body, and is fixedly connected with the left housing 320 by threaded fasteners or welding. The intermediate plate 321 is mounted with ball bearings 179 for supporting the rotor 410 of the generator 401 , as shown in FIG. 3 . In order to further improve integration, the coupling teeth 42 of the actuator (specifically the second actuator S2) close to the generator 401 are fixedly connected to the middle plate 321, specifically, the coupling teeth of the actuator can be directly processed on the middle plate 321 .

Referring to FIG. 7 , in some embodiments, the hybrid electric drive assembly 1000 further includes a shift mechanism assembly 500 , an intermediate shaft gear assembly 600 , a differential assembly 700 and a controller assembly 800 . The mechanism assembly 500, the intermediate shaft gear assembly 600 and the differential assembly 700 are all located in the shaft gear installation cavity 302, and the shifting mechanism assembly 500 and the intermediate shaft gear assembly 600 cooperate with the planetary row 100 to realize speed change and shifting. gear function, and the power is output from the differential gear assembly 700 to the wheel shafting. The controller assembly 800 is installed outside the shell assembly 300, and is used to control the operation of the motor assembly 400 and/or the shift mechanism assembly 500. Of course, the controller assembly 800 can also control the oil pump and the hybrid electric drive assembly Some sensors (temperature sensors, pressure sensors, etc.) and other electronic devices set inside the 1000 work. For the specific content of the shifting mechanism assembly 500 , the countershaft gear assembly 600 , and the controller assembly 800 , reference may be made to related publications in the prior art, and no further description is given here.

Example 4:

Based on the same inventive concept, this embodiment provides a vehicle, including the hybrid electric drive assembly 1000 of Embodiment 3 above, that is, the vehicle is a hybrid vehicle powered by an engine and an electric motor. Since the vehicle is equipped with the hybrid electric drive assembly 1000 of the above-mentioned embodiment 3, it at least has all the beneficial effects brought by the technical solution of the above-mentioned embodiment 3. The hybrid electric drive assembly 1000 is highly integrated and small in size. It can be installed in the engine compartment of vehicles of different models. For other unspecified structures of the vehicle, reference may be made to related publications in the prior art, and no further description is given here.

Example 5:

Based on the same inventive concept, this embodiment provides a vehicle, including the input shaft assembly 900 of Embodiment 2 above, that is to say, the vehicle can be a hybrid vehicle or a pure electric vehicle or an ordinary fuel vehicle, and the Or the motor provides power, and the input shaft assembly 900 of the above-mentioned embodiment 2 can realize the effects of shifting and speed changing. For other unspecified structures of the vehicle, reference may be made to related publications in the prior art, and no further description is given here.

Embodiment 6:

Based on the same inventive concept, this embodiment provides a vehicle, including the ring gear shaft of Embodiment 1 above. The motor provides power, and the ring gear shaft of Embodiment 1 above can be applied in the gearbox of the vehicle, or in the hub motor system. For other unspecified structures of the vehicle, reference may be made to related publications in the prior art, and no further description is given here.

While preferred embodiments of the present application have been described, additional changes and modifications to these embodiments can be made by those of ordinary skill in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the application.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (28)

1. An inner ring gear shaft, characterized in that it is used to be sleeved on the planetary row and installed on the housing assembly through a support bearing; the inner ring gear shaft includes: The sleeve part is used to be sleeved on the sun gear shaft or the planet carrier shaft of the planetary row, and the sleeve part is provided with at least one first installation position for installing the actuator; The cover part is connected to the shaft sleeve part and is used for transmission connection with the ring gear of the planetary row; Wherein, the cover portion and/or the sleeve portion are provided with at least one assembly position for setting the support bearing; the cover portion and/or the sleeve portion are provided with at least one mounting position for setting the gear The second installation position. 2. The inner ring gear shaft according to claim 1, characterized in that: the cover part includes a gear sleeve part and a baffle part, the inner ring of the baffle part is connected to the shaft sleeve part, and the outer ring is connected to the The gear sleeve part. 3. The inner ring gear shaft according to claim 2, characterized in that: the sleeve part and the ring gear are integrally constructed or connected by keys; the sleeve part, the baffle part, the The tooth cover part is an integral structure. 4. The inner ring gear shaft according to claim 3, characterized in that: the gear sleeve part is connected to the inner gear ring through a spline; the inner spline of the gear sleeve part is provided with a retaining ring groove. 5. The inner ring gear shaft according to claim 2, characterized in that: the gear sleeve part and the shaft sleeve part are provided with the assembly position; the assembly position of the gear sleeve part is the inner hole wall, A shaft sleeve for installing the supporting bearing is arranged on the assembly position of the shaft sleeve part. 6. The inner ring gear shaft according to claim 5, characterized in that: between the assembly position of the gear sleeve part and the installation place of the inner ring gear, there is an axial limiter for the support bearing. limit structure. 7. The inner ring gear shaft according to claim 2, characterized in that: the gear sleeve portion and the shaft sleeve portion are both provided with the second installation position; the second installation position is provided for aligning the A limiting structure for axially limiting the gear or the bearing of the gear. 8. The inner ring gear shaft according to claim 1, characterized in that: the first installation position is a key connection structure; the first installation position is provided with a limiter for axially limiting the actuator. bit structure. 9. The ring gear shaft according to any one of claims 1-8, characterized in that: there are two installation positions for the first installation position, the installation position and the second installation position; The first installation positions are distributed at both ends of the shaft sleeve; the two assembly positions and the two second installation positions are respectively provided on the shaft sleeve and the cover portion. 10. The ring gear shaft according to any one of claims 1-8, characterized in that: the sleeve portion and/or the cover portion is provided with at least one hole penetrating through the sleeve wall of the sleeve portion. An oil guide hole; an oil guide groove connected to the oil guide hole is provided on the outer surface of the shaft sleeve. 11. An input shaft assembly, characterized in that it comprises: a planetary row for connecting an engine, at least one actuator, at least one support bearing, at least one gear and the inner shaft as claimed in any one of claims 1-10. ring gear shaft; the ring gear shaft is sleeved on the sun gear shaft or the planet carrier shaft of the planetary row, and the cover part of the ring gear shaft is connected with the ring gear of the planetary row; the At least one actuator is installed on the at least one first installation location; the at least one support bearing is arranged on the at least one assembly location; and the at least one gear is arranged on the at least one second installation location. 12. The input shaft assembly of claim 11, wherein: said at least one actuator comprises a first actuator and a second actuator; said at least one support bearing comprises a first support bearing and a second support bearings; the at least one gear includes a first gear and a second gear. 13. The input shaft assembly according to claim 12, characterized in that: the first actuator and the second actuator are distributed at both ends of the sleeve part; the first support bearing is arranged on In the inner hole of the cover part, the second support bearing is sleeved between the first actuator and the second actuator through a shaft; the first gear gear is idly sleeved on the On the cover part, the second gear gear is vacantly sleeved on the sleeve part through a bearing, and is located between the first actuator and the second support bearing. 14. The input shaft assembly according to claim 13, wherein the first gear gear comprises a ring gear part and a connecting part, and the ring gear part is loosely sleeved on the cover part through a bearing, so that The connecting part is fixedly connected to the coupling teeth on one side of the first actuator; the gear hub of the first actuator is in transmission connection with the first installation position; the combination of the other side of the first actuator The teeth are fixedly connected with the second gear, and the second gear is axially limited by the sleeve. 15. The input shaft assembly according to claim 13, characterized in that: the gear hub of the second actuator is in transmission connection with the sun gear of the planetary row, and the coupling gear on one side of the second actuator The connecting teeth on the other side of the second actuator are fixedly connected with the housing assembly and are connected in transmission with the shaft sleeve. 16. The input shaft assembly according to any one of claims 11-15, characterized in that: the sun gear shaft or the planet carrier shaft of the planet row is provided with a connection structure for transmission connection with the motor assembly. 17. The input shaft assembly according to any one of claims 11-15, characterized in that: the planet row is provided with a lubricating passage, and the outlet of the lubricating passage faces the planet wheel bearing of the planet row; The sun gear shaft of the planetary row is provided with a first hollow cavity penetrating in the axial direction, and the planet frame of the planetary row is provided with an oil collecting cavity, and the first hollow cavity, the oil collecting cavity and the lubricating passage are connected in sequence. 18. The input shaft assembly according to claim 17, characterized in that: the planet carrier includes a planet carrier shaft, a connecting plate and a planet wheel shaft connected in sequence, and the planet carrier shaft is provided with the connected oil collection chamber and a first oil guide hole, the planetary wheel shaft is provided with a second oil guide hole; An oil guiding member is provided outside the connecting plate; the first oil guiding hole, the gap between the oil guiding member and the connecting plate, and the second oil guiding hole communicate in sequence to form the lubricating channel. 19. The input shaft assembly according to claim 17, characterized in that: a support bearing is installed between the sun gear shaft and the ring gear shaft; A hollow fourth oil guide hole, wherein the outlet of one of the fourth oil guide holes faces the support bearing. 20. The input shaft assembly according to claim 17, characterized in that: the input shaft assembly also includes an oil guide pipe, the oil guide pipe is installed through the first hollow cavity, and extends near the end of the planetary row. into the oil collection chamber. 21. The input shaft assembly according to claim 20, characterized in that: the oil guide pipe is provided with a number of oil outlet holes distributed along the axial and/or radial intervals of the oil guide pipe; An oil outlet is provided at the end of the remote planet row; the oil outlet is a U-shaped groove and/or a round hole. 22. A hybrid electric drive assembly, characterized in that it comprises: shell assembly; The input shaft assembly according to any one of claims 11-21, installed inside the housing assembly. 23. The hybrid electric drive assembly according to claim 22, characterized in that: the hybrid electric drive assembly further comprises a motor assembly connected to the housing assembly, the rotor of the motor assembly It is connected with the sun gear shaft of the planet row. 24. The hybrid electric drive assembly according to claim 23, wherein the housing assembly comprises a right housing, a left housing and an end cover connected in sequence, and the right housing is connected to the left The casing encloses a shaft tooth installation chamber, and the left housing and the end cover enclose a motor installation chamber; the input shaft assembly is located in the shaft tooth installation chamber, and the motor assembly is located in the motor installation chamber. cavity. 25. The hybrid electric drive assembly according to claim 24, characterized in that: the left housing is provided with a middle plate, and the middle plate is installed with a third support bearing for supporting the rotor of the motor assembly ; One of the coupling teeth of the actuator is fixedly connected with the middle plate. 26 . The hybrid electric drive assembly according to claim 23 , wherein the motor assembly includes a generator and a drive motor, and the rotor of the generator is connected to the sun gear of the planetary row in transmission. 27. The hybrid electric drive assembly according to claim 26, wherein a second hollow cavity is arranged inside the rotor of the generator, and the second hollow cavity communicates with the shaft of the sun gear of the planet row. first cavity. 28. A vehicle, characterized by: comprising the hybrid electric drive assembly described in any one of claims 22-27; or comprising the input shaft assembly described in any one of claims 11-21; Alternatively, the ring gear shaft according to any one of claims 1-10 is included.

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