WO2019033421A1

WO2019033421A1 - Multi-speed multi-power planetary speed changing device

Info

Publication number: WO2019033421A1
Application number: PCT/CN2017/098134
Authority: WO
Inventors: 刘身谦
Original assignee: 深圳市万维博新能源技术有限公司
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2019-02-21

Abstract

Disclosed is a multi-speed multi-power planetary speed changing device, comprising a posterior planetary gear mechanism (a), a power output gear (c) mounted on the posterior planetary gear mechanism (a), and an anterior planetary gear mechanism (b) composed of an inner ring gear shell (11), an anterior planetary carrier (12), an anterior sun gear (13) and an anterior planetary gear (14), wherein a power connection shaft sleeve (15) configured to be connected to a second power motor (e) is arranged at a rear end of the inner ring gear shell (11), and a first power connection shaft rod (16) configured to be connected to a first power motor (d) is arranged at a rear end of the anterior sun gear (13); and a second power connection shaft rod (17) configured to be connected to the posterior planetary gear mechanism (a) is arranged at a front end of the anterior planetary carrier (12), and a third power motor (f) is arranged at a front end of the posterior planetary gear mechanism (a). By selectively providing multiple power motors with different (or the same) power(s) and revolving speed parameters, the multi-speed multi-power planetary speed changing device can obtain different gear ratios, so as to realize functions such as speed changing and stepless or multi-stage no-clutch gear shifting, and can effectively solve a series of problems existed in existing speed changing devices.

Description

Multi-speed multi-power planetary gear shifting device

Technical field

The utility model relates to the technical field of power control, in particular to a multi-speed multi-power planetary gear shifting device.

Background technique

As we all know, a planetary gear transmission is a gearbox mainly composed of a planetary ring gear, a sun gear, a planetary gear (also called a satellite gear) and a gear shaft, which can be based on a planetary ring gear, a sun gear and a planetary gear. The relationship of motion to achieve a dynamic transmission relationship between the input shaft and the output shaft, a co-rotation or reverse transmission relationship between the input shaft and the output shaft, and a change in the transmission ratio between the input shaft and the output shaft to achieve power The output control is widely used in many industries such as fuel vehicles, electric vehicles, hydraulic and wind power equipment, construction machinery, civil appliances, military equipment and so on.

The existing planetary gear transmission needs to be used in combination with a clutch in a practical application, that is, the output shaft of the clutch is used as an input shaft of the transmission to cut off or transmit the power input from the engine to the transmission through the clutch, thereby realizing the shifting shift. Therefore, the transmission also has the following problems in the actual use process: 1. Frequent starting of the clutch may cause serious heat generation phenomenon of the transmission due to friction between components, which affects the power performance and service life of the transmission; In the process of shifting and shifting, there will be frequent power interruption and rigid impact between structural parts, which seriously affects the use and experience of the transmission. 3. The transmission cannot achieve efficient switching effect of speed and torque. Moreover, the power output mode is single, the power input energy cannot be reasonably utilized, and the energy saving and environmental protection effects are poor. 4. The complex oil circuit and the circuit control mechanism need to be configured, which not only reduces the reliability of the transmission, but also increases the production and use cost of the transmission.

Therefore, it is necessary to propose an improvement to the existing planetary gear transmission to maximize the performance of the transmission and meet the actual needs in the actual application process.

Utility model content

In view of the deficiencies of the prior art described above, it is an object of the present invention to provide a multi-speed multi-power planetary gear shifting device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A multi-speed multi-power planetary gear shifting device comprising a rear planetary gear mechanism, a front planetary gear mechanism and a power output gear;

The pre-stage planetary gear mechanism includes an inner ring gear housing, a front stage planetary bracket mounted in the inner ring gear housing and coaxially distributed with the inner ring gear housing, and a front planetary bracket mounted in the front stage a front stage sun gear coaxially distributed with the front stage planet carrier; the front stage planet carrier is provided with a plurality of front stages that are evenly distributed around the front stage sun gear and simultaneously mesh with the ring gear case and the front stage sun gear a planetary gear, a central portion of the rear end surface of the ring gear case is provided with a power connection bushing, and a central portion of the rear end surface of the front stage sun gear is provided with a first power connection shaft extending through the power connection bushing. A central portion of the front end surface of the front stage planetary carrier is disposed with a front end surface extending through the inner ring gear case and is inserted into the rear stage planetary gear mechanism by the rear end side of the rear stage planetary gear mechanism to drive the rear stage planetary a second power connecting shaft for power output of the gear mechanism, wherein the first power connecting shaft is connected with a front stage planetary bracket by utilizing an meshing relationship between the front stage sun gear and the front stage planetary gear The first power motor and/or the power connection bushing connected to the second power connecting shaft rotates with a meshing relationship between the ring gear case and the front stage planetary gear to drive the second power connection through the front stage planet carrier a second power motor that rotates the shaft;

a front end side of the rear stage planetary gear mechanism is provided with a third power motor for driving the rear stage planetary gear mechanism for power output, and the power output gear is mounted on the power output end of the planetary gear mechanism of the rear stage. on.

Preferably, the front stage planet carrier comprises a hollow body portion and a transition sleeve portion formed by a central portion of the rear end surface of the disk portion extending rearward in the axial direction, the body portion of the disk portion a plurality of planetary gear shaft mounting holes are circumferentially opened on the circumference wall, and each of the planetary gear shaft mounting holes is provided with a front stage planetary gear; the second power connecting shaft is formed by a front end surface of the disk body portion The central region is formed by extending forward in the axial direction, the front stage sun gear is disposed in the disk body portion, and the first power connection shaft is inserted through the transition sleeve portion.

Preferably, the front end portion of the front stage sun gear is provided with a first bearing for rotatingly contacting the front stage sun gear with the disk body portion, and the first power connection shaft is provided with two separate sleeves for respectively a second bearing for rotatingly contacting the first power connecting shaft with the disk portion and rotating the first power connecting shaft with the transition sleeve portion, wherein the front and rear ends of the disk portion are respectively provided with a a third bearing in which the disk portion is in rotational contact with the ring gear housing.

Preferably, the ring gear case includes an inner ring gear for meshing with the front stage planetary gear, a first ring gear flange located on the front side of the inner ring gear and integrated with the inner ring gear, and a second ring gear flange integrated with the inner ring gear and integrated with the inner ring gear, the third bearing being clamped between the first ring gear flange and the front end surface of the disc body portion and the second Between the ring gear flange and the rear end surface of the disk body portion, the power connection bushing is formed by extending a central portion of the rear end surface of the second ring gear flange in the axial direction, the second power The connecting shaft is distributed through the first ring gear flange.

Preferably, the rear stage planetary gear mechanism comprises a rear stage planetary carrier and a first rear stage sun gear and a second device which are sequentially arranged in the rear stage planetary carrier and are coaxially and parallelly distributed from each other in front to rear. a rear stage sun gear, wherein the rear stage planetary carrier is provided with a plurality of rear stage planetary coaxial shafts uniformly distributed around the first rear stage sun gear and the second rear stage sun gear in the axial direction, each of which is a rear stage planetary coaxial shaft is provided with a first rear stage planetary gear for meshing with the first rear stage sun gear and a second rear stage planetary gear for meshing with the second rear stage sun gear;

The third power motor is disposed on a front side of the rear stage planetary carrier and coaxially distributed with the rear stage planetary carrier, and the power output shaft of the third power motor is connected to the first rear stage sun gear; the second power The connecting shaft is coupled to the second rear stage sun gear, and the power output gear is fitted to the rear stage planet carrier.

Preferably, the rear stage planet carrier comprises two bracket plates which are arranged in front and rear relative to each other, and the first rear stage sun gear and the second rear stage sun gear are sequentially clamped between the two bracket plates from front to back. The front and rear ends of the rear planetary coaxial shaft are respectively rotatably connected to the corresponding bracket plates, and the power output gear is integrally assembled with one of the bracket plates, and the second power connecting shaft is located through The bracket plate on the rear side is connected to the second rear stage sun gear.

Preferably, a coupling rod is disposed between each adjacent two of the rear stage planetary coaxial shafts, and the front and rear ends of the coupling rod are respectively fixedly connected with the corresponding bracket plates.

Preferably, the front end surface central region of the first rear stage sun gear extends forward in the axial direction to form a distribution of the bracket plate extending through the front side for connection with the power output shaft of the third power motor. The stage power is connected to the shaft, and the rear stage power connection shaft is provided with a fourth bearing for rotatingly contacting the rear stage power connection shaft with the bracket plate on the front side, the first rear stage sun gear a second bearing is in rotational contact with the second rear stage sun gear, and the second power connecting shaft is provided with a sixth for rotationally contacting the second power connecting shaft with the bracket plate on the rear side. Bearing.

Preferably, it further includes a shift gear mechanism including a shifting shaft and a first shifting gear and a second shifting gear sequentially disposed on the shifting shaft in an axial direction of the shifting shaft, the first The shifting gear meshes with the power output gear, and the first shifting gear drives the second shifting gear to rotate synchronously through the shifting shaft.

Preferably, it further includes a differential gear that meshes with the second shifting gear, the differential gear being sleeved on a power take-off shaft.

Due to the adoption of the above scheme, the utility model can achieve the following beneficial effects by selecting a plurality of power motors having different (or the same) power and speed parameters and utilizing the cooperation between the structural components:

1. Based on the structural characteristics of multiple power motors in the whole device, by selecting a power motor with different (or the same) power and speed parameters, the entire device can obtain different gear ratios, thereby achieving shifting, stepless or more Level without shifting and other functions, and due to the shifting and changing of the entire device The gear is realized by the control of the power motor, and it is not necessary to configure the clutch for the device, so that the structural impact problem between the components during the shifting process can be avoided;

2. Multiple power motors can switch different powers in time according to different usage conditions, and can be quickly switched under different conditions, so that the motor always works in the high efficiency range;

3. By changing the electronic control logic of the power motor or configuring the brake for each power motor, multiple action modes can be assigned to achieve a variety of different power output effects;

4. Through the alignment relationship between the sun gear and the planetary gear, the whole device can be formed into a structure with a circumferential multi-tooth distribution, which ensures uniform force of the device, thereby improving the power output efficiency and reducing the wear rate between components. , the amount of noise and the reduction of calorific value provide favorable structural conditions;

Based on this, the structure is simple and compact, and the power output effect of multi-speed shifting can be realized by the cooperation between a plurality of power motors, and the power output mode is variously variable and adjustable, and has strong practical value and market promotion value.

DRAWINGS

1 is a schematic view showing the driving principle between the mechanisms of the embodiment of the present invention;

2 is a schematic structural view of the main body of the embodiment of the present invention (1);

Figure 3 is a schematic view of the structural assembly of the main body portion of the embodiment of the present invention (2);

4 is a schematic cross-sectional structural view of a main body portion of an embodiment of the present invention;

5 is a schematic structural view of a planetary gear mechanism of a front and a rear stage according to an embodiment of the present invention;

6 is a schematic exploded view showing the structure of a front stage planetary gear mechanism according to an embodiment of the present invention;

7 is a schematic exploded view showing the structure of a planetary gear mechanism of a rear stage according to an embodiment of the present invention;

In the picture:

a, the rear planetary gear mechanism; b, the front planetary gear mechanism; c, the power output gear; d, the first power motor; e, the second power motor; f, the third power motor; g, the gear mechanism ;h, differential;

11, inner ring gear; 111, inner ring gear; 112, first ring gear flange; 113, second ring gear flange; 12, front stage planetary support; 121, disk body; 122, transition sleeve Pipe; 123, planetary gear shaft mounting hole; 13, front stage sun gear; 14, front stage planetary gear; 15, power connection bushing; 16, first power connecting shaft; 17, second power connecting shaft

21, rear stage planetary support; 211, bracket plate; 212, coupling rod; 22, first rear stage sun gear; 221, rear stage power connection shaft; 23, second rear stage sun gear; 24, rear stage planet Coaxial shaft; 25, first rear stage planetary gear; 26, second rear stage planetary gear;

31, a shifting shaft; 32, a first shifting gear; 33, a second shifting gear;

41, differential gear; 42, power output shaft;

A, the first bearing; B, the second bearing; D, the fourth bearing; E, the fifth bearing; F, the sixth bearing; G, the third bearing.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various different ways as defined and covered by the claims.

As shown in FIG. 1 to FIG. 7 , the present embodiment provides a multi-speed multi-power planetary gear shifting device comprising a rear planetary gear mechanism a, a front planetary gear mechanism b and a power output gear c; The front stage planetary gear mechanism b includes an inner ring gear housing 11, a front stage planetary bracket 12 mounted in the inner ring gear housing 11 and coaxially distributed with the inner ring gear housing 11, and a front mounting bracket The front stage sun gear 13 is disposed coaxially with the front stage planet carrier 12 in the stage planet carrier 12; the front stage planet carrier 12 is provided with a plurality of circumferentially arranged front sun gears 13 evenly distributed and simultaneously with the ring gear case 11 The front stage planetary gear 14 meshing with the front stage sun gear 13 is provided with a power connection bushing 15 at a central portion of the rear end surface of the inner ring gear case 11, and a through hole is provided in a central portion of the rear end face of the front stage sun gear 13 The first power connecting shaft 16 distributed by the power connecting sleeve 15 is disposed at a central portion of the front end surface of the front stage planetary bracket 12 with a front end surface extending through the inner ring gear housing 11 and rearward of the planetary gear mechanism a of the rear stage. End side inserted into the rear planetary gear machine the rear stage to drive a planetary gear mechanism a a second power connecting shaft 17 for performing power output, the first power connecting shaft 16 is connected with a second power connecting shaft through the front stage planetary carrier 12 by the meshing relationship between the front stage sun gear 13 and the front stage planetary gear 14 The first power motor d and/or the power connection bushing 15 for rotating the rod 17 are connected by a meshing relationship between the ring gear housing 11 and the front stage planetary gear 14 to drive the second power connecting shaft through the front stage planetary carrier 12. a second power motor e that rotates; at the same time, a third power motor f for driving the rear stage planetary gear mechanism a for power output is mounted on the front end side of the rear stage planetary gear mechanism a, and the power output gear c It is mounted on the power output end of the planetary gear mechanism a of the rear stage.

Thus, at least one front stage power motor (ie, the first power motor d and/or the second power motor e may be used, and the two may be separately set or may be simultaneously set. When simultaneously set, the two front stage power motors may be The coaxial central motor is used to realize the effect of the dual-power coaxial output. As the power input source of the pre-stage planetary gear mechanism b, the power output end of the pre-stage planetary gear mechanism b and the third power motor f are utilized. As the two power input sources of the planetary gear mechanism a of the latter stage, a multi-speed gear shifting device of the multi-power motor can be formed by combining with the transmission performance of the planetary gear mechanism itself, that is,

1. The first power motor d inputs power through the first power connection shaft 16 to the front stage sun gear 13, and drives each of the front stage planetary gears 14 by the structural meshing relationship between the front stage sun gear 13 and the front stage planetary gear 14. Since the front stage planetary gear 14 is mounted on the front stage planetary carrier 12, the front stage planetary carrier 12 is further driven to revolve around the axis, thereby using the second power to connect the shaft 17 to the rear stage planet. The gear mechanism a inputs power;

2. The second power motor e can drive the ring gear case 11 to rotate by the power connection bushing 15, and drive each of the front stage planetary gears 14 by the structural meshing relationship between the ring gear case 11 and the front stage planetary gear 14. Rotation, based on the same driving principle as the first power motor d, to finally input power to the rear stage planetary gear mechanism a through the second power connecting shaft 17;

3. At the same time, by selecting the rear planetary gear mechanism a with dual power input, the power output from the third power motor f and the front planetary gear mechanism b can be simultaneously used to form two power transmissions. Into, the power output gear c mounted on the power output end of the planetary gear mechanism a of the rear stage is finally utilized as a component of the power output of the entire apparatus.

Based on this, the shifting device of the embodiment can achieve the following beneficial effects: 1. Based on the structural features of the plurality of power motors of the entire device, by selecting a power motor having different (or the same) power and speed parameters, the entire The device obtains different gear ratios to achieve functions such as shifting, stepless shifting or multi-step shifting, and since the shifting and shifting of the entire device is achieved by controlling the power motor, there is no need to configure the clutch for the device. It can avoid the structural impact problem between components during the shifting process; 2. Multiple power motors can switch different powers according to different usage conditions, and can switch jobs quickly under different conditions, so that the motor is always efficient. Working in the segment area; 3. By changing the electronic control logic of the power motor or by matching the brakes and other components, a variety of gear shifting or braking modes can be assigned to achieve different power output effects; 4. Through the sun gear and the planetary gear The inter-parallel meshing relationship enables the entire device to form a structure with a circumferential multi-tooth distribution, ensuring uniform force on the device. To improve the efficiency of the power output, between the members is reduced, the amount of noise and wear rates reduce the heat provided favorable structural conditions.

In order to optimize the structure of the entire pre-stage planetary gear mechanism b and ensure the compactness between the various components, the front stage planetary carrier 12 of the present embodiment includes a hollow body portion 121 and a disk portion 121. A transition sleeve portion 122 formed by extending a central portion of the rear end surface rearward in the axial direction, a plurality of planetary gear shaft mounting holes 123 are circumferentially opened on the peripheral wall of the disk portion 122, and each of the planetary gear shaft mounting holes 123 is provided with a front stage planetary gear 14; and the second power connecting shaft 17 is formed by extending a central portion of the front end surface of the disk portion 121 in the axial direction, and the front stage sun gear 13 is placed on the disk. In the body 121, the first power connection shaft 16 is distributed through the transition sleeve portion 122. Thus, by adopting a shell-shaped planet carrier and fitting the ring gear case, the ring gear housing, the planetary gears and the sun gear can be in a relatively concentric distribution state, and the solar gear and the planetary gears can be relatively sealed. Structure space.

In order to ensure that the respective moving parts can smoothly move to achieve the gear transmission effect, a front end portion of the front stage sun gear 13 is provided with a front sun gear 13 and a disk portion 121. The first bearing A for rotational contact is provided with two on the first power connection shaft 16 for respectively rotating the first power connection shaft 16 with the disk portion 121 and connecting the first power connection shaft 16 The second bearing B in rotational contact with the transition sleeve portion 122 is provided with a third bearing G for rotationally contacting the disk portion 121 and the ring gear housing 11 at the front and rear ends of the disk portion 121, respectively.

As a preferred solution, in order to facilitate the disassembly and maintenance of the front stage planetary gear mechanism b, the ring gear housing 11 of the present embodiment includes an inner ring gear 111 for meshing with the front stage planetary gear 14, and is located at the inner tooth. A first ring gear flange 112 integrally fitted with the inner ring gear 111 on the front side of the ring 111 and a second ring gear flange 113 integrally formed on the rear side of the inner ring gear 111 and integrated with the ring gear 111 The third bearing G is sandwiched between the first ring gear flange 112 and the front end surface of the disk portion 121 and between the second ring gear flange 113 and the rear end surface of the disk portion 121, and the power connection bushing is 15 is formed by extending a central portion of the rear end surface of the second ring gear flange 113 rearward in the axial direction, and the second power connecting shaft 17 is distributed through the first ring gear flange 112.

In order to enable the rear stage planetary gear mechanism a to convert the power input by the third power motor f and the front stage planetary gear mechanism b and output it through the power output gear c while minimizing the complexity of the entire apparatus, The rear stage planetary gear mechanism a of the present embodiment includes a rear stage planetary carrier 21 and first rear stage sun gears 22 which are sequentially disposed in the rear stage planetary carrier 21 from front to rear and are coaxially and in parallel with each other. And the second rear stage sun gear 23, in the rear stage planetary carrier 21, a plurality of rear stage planetary coaxial shafts uniformly distributed around the first rear stage sun gear 22 and the second rear stage sun gear 23 are mounted in the axial direction The rod 24 is provided with a first rear stage planetary gear 25 for meshing with the first rear stage sun gear 22 and a second rear stage sun gear 23 on each of the rear stage planetary coaxial shafts 24. The second rear stage planetary gear 26 is engaged; at the same time, the third power motor f is placed on the front side of the rear stage planetary carrier 21 and coaxially distributed with the rear stage planetary carrier 21, and the power output shaft of the third power motor f is First rear stage sun gear 22 Company; and a second drive coupling shaft 17 connected to the second-stage sun gear 23, the power output gear set to the rear stage c planet carrier 21.

Thereby, the second rear stage sun gear 23 can form a gear transmission effect by the structural engagement relationship between the power input from the front stage planetary gear mechanism b and the second rear stage planetary gear 26, The second stage planetary gear 26 is mounted on the rear stage planet carrier 21 through the rear stage planetary coaxial shaft 24, so that the power output gear c can be finally rotated by the rear stage planetary carrier 21, based on the same reason, first The rear stage sun gear 22 can use the power input by the third power motor f to form a gear transmission effect through its structural meshing relationship with the first rear stage planetary gear 25, since the first rear stage planetary gear 25 is also passed through the rear stage planetary The coaxial shaft 24 is mounted on the rear stage planet carrier 21, so that the power output gear c can be finally rotated by the rear stage planetary carrier 21; the third power motor f and the front stage planetary gear can be controlled by logic control. The mechanism b separately performs power input to finally form different power output effects, and the two can simultaneously perform power input through the cooperation of the brakes, and utilize the function of gear meshing to form power superposition (acceleration), deceleration, braking, and the like. A variety of output effects.

In order to facilitate the disassembly and maintenance of the planetary gear mechanism b of the rear stage, the rear stage planetary carrier 21 of the present embodiment includes two bracket plates 211 which are vertically distributed back and forth, the first rear stage sun gear 22 and the second rear stage sun gear. 23 is sequentially clamped between the two bracket plates 211 from front to back, and the front and rear ends of the rear planetary coaxial shaft 24 are respectively pivotally connected with the corresponding bracket plates 211, and the power output gear c and one of the brackets are respectively The plate 211 is assembled as one body, and the second power connection shaft 17 is connected to the second rear stage sun gear 23 through the bracket plate 211 on the rear side. Thus, by optimizing the structure of the rear stage planet carrier 21, it can be rendered similar to a frame type open structure to facilitate assembly of the various gears and related components.

Since the rear stage planet carrier 21 is a component that provides an assembly position for the power output gear c and needs to be operated by itself, in order to ensure its structural stability, it is also disposed between each adjacent two rear stage planetary coaxial shafts 24 There is a coupling rod 212, and the front and rear ends of the coupling rod 212 are respectively fixedly connected with the corresponding bracket plate 211.

In order to ensure the smooth operation of the planetary gear mechanism a of the rear stage and optimize its structure, a central portion of the front end surface of the first rear stage sun gear 22 extends forward in the axial direction to form a bracket plate 211 penetrating the front side. The rear stage power connection shaft 221 is distributed for the power output shaft of the third power motor f, and the rear stage power connection shaft 221 is provided with a rear power connection shaft 221 and a front side. The fourth bearing D of the bracket plate 211 is in rotational contact, the first rear stage sun The gear 22 and the second rear stage sun gear 23 are in rotational contact with a fifth bearing E. The second power connecting shaft 17 is provided with a bracket plate 211 for connecting the second power connecting shaft 17 with the rear side. The sixth bearing F is in rotational contact.

In order to further shift the output speed of the device to achieve the final power output effect, a shift gear mechanism g is further disposed between the power output gear c and the driven member, and the shift gear mechanism g mainly includes a shift shaft 31 and The first shifting gear 32 and the second shifting gear 33 are sequentially fitted on the shifting shaft 31 in the axial direction of the shifting shaft 31, and the first shifting gear 32 meshes with the power output gear c, whereby the first shifting gear can be utilized 32, the second shifting gear 33 is driven to rotate synchronously by the shifting shaft 31, and the driven member is connected by the second shifting gear 33, and the number of teeth of the first shifting gear 32 is not equal to the number of teeth of the second shifting gear 33, thereby realizing the transmission. Ratio change output.

As a preferred solution, a differential h is further disposed between the transmission gear mechanism g and the driven member, and the differential h includes a differential gear 41 that meshes with the second shifting gear 33, and the differential gear 41 is sleeved. On a power output shaft 42. Thereby, the output rotational speed of the device can be further adjusted by the differential gear 41 to drive the driven member to operate by the power output shaft 42.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation using the specification and the drawings of the present invention may be directly or indirectly applied to Other related technical fields are equally included in the scope of patent protection of the present invention.

Claims

A multi-speed multi-power planetary gear shifting device, characterized in that it comprises a rear planetary gear mechanism, a front planetary gear mechanism and a power output gear;

The pre-stage planetary gear mechanism includes an inner ring gear housing, a front stage planetary bracket mounted in the inner ring gear housing and coaxially distributed with the inner ring gear housing, and a front planetary bracket mounted in the front stage a front stage sun gear coaxially distributed with the front stage planet carrier; the front stage planet carrier is provided with a plurality of front stages that are evenly distributed around the front stage sun gear and simultaneously mesh with the ring gear case and the front stage sun gear a planetary gear, a central portion of the rear end surface of the ring gear case is provided with a power connection bushing, and a central portion of the rear end surface of the front stage sun gear is provided with a first power connection shaft extending through the power connection bushing. A central portion of the front end surface of the front stage planetary carrier is disposed with a front end surface extending through the inner ring gear case and is inserted into the rear stage planetary gear mechanism by the rear end side of the rear stage planetary gear mechanism to drive the rear stage planetary a second power connecting shaft for power output of the gear mechanism, wherein the first power connecting shaft is connected with a front stage planetary bracket by utilizing an meshing relationship between the front stage sun gear and the front stage planetary gear The first power motor and/or the power connection bushing connected to the second power connecting shaft rotates with a meshing relationship between the ring gear case and the front stage planetary gear to drive the second power connection through the front stage planet carrier a second power motor that rotates the shaft;

a front end side of the rear stage planetary gear mechanism is provided with a third power motor for driving the rear stage planetary gear mechanism for power output, and the power output gear is mounted on the power output end of the planetary gear mechanism of the rear stage. on.
A multi-speed multi-power planetary gear shifting device according to claim 1, wherein said front stage planetary carrier comprises a hollow body portion and a central portion of the rear end surface of the disk portion along the axis a transition sleeve portion formed to extend rearwardly, a plurality of planetary gear shaft mounting holes are circumferentially opened on a peripheral wall of the disk body portion, and each of the planetary gear shaft mounting holes is provided with a front stage a planetary gear; the second power connecting shaft is formed by extending a central portion of a front end surface of the disk portion in an axial direction, the front stage sun gear is disposed in the disk portion, and the first power connecting shaft The rod runs through the transition sleeve portion of the cloth.
A multi-speed multi-power planetary gear shifting device according to claim 2, wherein the front end portion of the front stage sun gear is provided with a first portion for rotationally contacting the front stage sun gear with the disc body portion. a bearing, the first power connecting shaft is provided with two for respectively rotating the first power connecting shaft with the disk portion and rotating the first power connecting shaft with the transition sleeve portion. In the second bearing, the front and rear ends of the disc body are respectively provided with a third bearing for rotatingly contacting the disc body portion with the ring gear housing.
A multi-speed multi-power planetary gear shifting device according to claim 3, wherein said inner ring gear housing includes an inner ring gear for meshing with the front stage planetary gears, and is located in front of the inner ring gear a first ring gear flange integrally assembled with the inner ring gear and a second ring gear flange at the rear side of the inner ring gear and integrated with the inner ring gear, the third bearing being clamped to Between the first ring gear flange and the front end face of the disk body portion and between the second ring gear flange and the rear end face of the disk body portion, the power connection bushing is behind the second ring gear flange The central portion of the end face is formed to extend rearward in the axial direction, and the second power connecting shaft is distributed through the first ring gear flange.
A multi-speed multi-power planetary gear shifting device according to any one of claims 1 to 4, wherein said rear stage planetary gear mechanism comprises a rear stage planetary carrier and is sequentially mounted from front to back. a first rear stage sun gear and a second rear stage sun gear disposed in the rear stage planet carrier and coaxially distributed in parallel with each other, and the rear stage planet carrier is provided with a plurality of inner circumferences in the axial direction a rear stage planetary coaxial shaft in which the stage sun gear and the second rear stage sun gear are evenly distributed, and each of the rear stage planetary coaxial shafts is provided with a first mesh for meshing with the first rear stage sun gear a rear stage planetary gear and a second rear stage planetary gear for meshing with the second rear stage sun gear;

The third power motor is disposed on a front side of the rear stage planetary carrier and coaxially distributed with the rear stage planetary carrier, and the power output shaft of the third power motor is connected to the first rear stage sun gear; the second power The connecting shaft is coupled to the second rear stage sun gear, and the power output gear is fitted to the rear stage planet carrier.
A multi-speed multi-power planetary gear shifting device according to claim 5, wherein said rear stage planetary bracket comprises two bracket plates which are arranged in front and rear relative to each other, said first rear stage sun gear The wheel and the second rear stage sun gear are sequentially clamped between the two bracket plates from front to back, and the front and rear ends of the rear stage planetary coaxial shaft are respectively pivotally connected with the corresponding bracket plates, The power output gear is integrally assembled with one of the bracket plates, and the second power connection shaft is connected to the second rear stage sun gear through the bracket plate on the rear side.
A multi-speed multi-power planetary gear shifting device according to claim 6, wherein a coupling shaft is disposed between each adjacent two of said rear stage planetary coaxial shafts, said joint The front and rear ends of the shaft are respectively fixedly connected with the corresponding bracket plates.
A multi-speed multi-power planetary gear shifting device according to claim 6, wherein a central portion of the front end surface of the first rear stage sun gear extends forward in the axial direction and is formed to penetrate through the front side. The bracket plate is distributed for the rear stage power connection shaft connected to the power output shaft of the third power motor, and the rear stage power connection shaft is provided with a rear power connection shaft and a front side a fourth bearing of the bracket plate for rotational contact, the first rear stage sun gear and the second rear stage sun gear are in rotational contact by a fifth bearing, and the second power connecting shaft is provided with a cover for The second power connecting shaft is a sixth bearing in rotational contact with the bracket plate on the rear side.
A multi-speed multi-power planetary gear shifting device according to claim 5, further comprising a shifting gear mechanism including a shifting shaft and sequentially sleeved along an axial direction of the shifting shaft a first shifting gear and a second shifting gear on the shifting shaft, the first shifting gear meshes with the power output gear, and the first shifting gear drives the second shifting gear to rotate synchronously through the shifting shaft.
A multi-speed multi-power planetary gear shifting device according to claim 9, further comprising: a differential gear meshing with the second shifting gear, said differential gear being sleeved on a power output shaft on.