A dual-ratio dual-output planetary reducer

Abstract

The application belongs to the technical field of speed reducer, and discloses a double-speed-ratio double-output planetary speed reducer, wherein a power input is connected with a first planetary assembly; a first clutch is arranged outside the first planetary assembly to lock or unlock the first planetary assembly; after being locked, the first planetary assembly rotates directly with the power input and no longer produces a speed reduction effect; after being unlocked, the first planetary assembly can produce a speed reduction effect; an output of the first planetary assembly is connected with an input of a second planetary assembly; a parallel shaft assembly is in transmission connection with inner and outer gear rings of the first planetary assembly; the inner and outer gear rings of the first planetary assembly rotate at the same speed as the power input after being locked; the inner and outer gear rings of the first planetary assembly no longer rotate after being unlocked; a brake is connected with an upper end of the parallel shaft assembly; a second clutch is connected with a lower end of the parallel shaft assembly; the second clutch locks or unlocks an output of the parallel shaft assembly; the parallel shaft assembly no longer rotates downward after being locked; the parallel shaft assembly produces a second power output downward after being unlocked.

Description

Technical Field

[0001] This invention belongs to the field of speed reducer technology, and relates to a speed reducer, specifically a dual-ratio dual-output planetary speed reducer. Background Technology

[0002] Planetary gear transmissions have advantages such as small mass, small size, large transmission ratio, compact structure and large load capacity, and are widely used in the field of speed reducers. In order to achieve a wider range of output speed adjustment, traditional dual-speed ratio speed reducers mostly use clutches to achieve speed change to obtain the required speed output, but usually can only provide a single power output.

[0003] In order to drive two sets of mechanisms to operate simultaneously, two sets of power inputs are usually required. In order to simplify the mechanism, under the condition of a single power source, a new type of reduction mechanism is needed to achieve dual-speed ratio change while providing dual power output. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a dual-speed-ratio dual-output planetary reducer that can provide two reduction ratios as needed and simultaneously output two sets of power.

[0005] This invention is achieved through the following technical solution:

[0006] A dual-speed ratio dual-output planetary reducer includes a housing assembly, a first clutch, a first planetary assembly, a second planetary assembly, a parallel shaft assembly, a brake, a second clutch, and an output assembly. The housing assembly provides installation space and fixed support for the other components. The power input is connected to the first planetary assembly. The first clutch is located outside the first planetary assembly to lock or unlock it. When locked, the first planetary assembly rotates directly with the power input and no longer produces a deceleration effect. When unlocked, the first planetary assembly can produce a deceleration effect. The output of the first planetary assembly is connected to the input of the second planetary assembly, and the output of the second planetary assembly is the first power output. The parallel shaft assembly is driven by the internal and external gear rings of the first planetary assembly. When locked, the internal and external gear rings of the first planetary assembly rotate at the same speed as the power input. When unlocked, the internal and external gear rings of the first planetary assembly no longer rotate. The upper end of the parallel shaft assembly is connected to the brake, and the lower end is connected to the second clutch. The second clutch locks or unlocks the output of the parallel shaft assembly. When locked, the parallel shaft assembly no longer outputs downward rotation. When unlocked, the parallel shaft assembly generates a second power output downward.

[0007] Furthermore, the first planetary assembly includes an input shaft, a first coupling carrier, internal and external gear rings, and a first planet carrier. The upper end of the input shaft is connected to the power input. The first coupling carrier is rotatably or non-rotatably mounted outside the input shaft according to the control of the first clutch. The internal and external gear rings are divided into two fixedly connected parts. The upper part of the internal and external gear rings is provided with internal splines that mesh with the external splines of the first coupling carrier. The lower part of the internal and external gear rings is provided with external teeth on the outer side and internal teeth on the inner side. The external teeth of the lower part of the internal and external gear rings mesh with the parallel shaft assembly. The bottom of the input shaft is located at the center of the first planet carrier and meshes with the planets mounted on the first planet carrier. The outer side of the planet gears meshes with the internal teeth of the lower part of the internal and external gear rings.

[0008] Furthermore, the first planet carrier and planetary gears, together with the input shaft, constitute the NGW planetary reducer structure.

[0009] Furthermore, the first clutch includes a first clutch rotor and a first clutch friction disc, the first clutch rotor being fixedly connected to the input shaft, and the first clutch friction disc being fixedly connected to the first coupling bracket.

[0010] Furthermore, the second planetary component is an NW planetary decelerator structure.

[0011] Furthermore, the second planetary assembly includes a second planetary carrier, on which a double planetary gear is provided. The output of the first planetary assembly is meshed with the center of the upper part of the double planetary gear. The outer side of the lower end of the double planetary gear meshes with the internal spline inside the housing assembly. The lower end of the second planetary carrier is provided with a second cylinder, which is the first power output.

[0012] Furthermore, the parallel shaft assembly includes a parallel gear shaft and a brake gear shaft. The external teeth of the parallel gear shaft mesh with the external teeth of the inner and outer gear rings, and the external teeth of the parallel gear shaft mesh with the external teeth in the middle of the brake gear shaft. A brake is provided on the outer side of the upper section of the brake gear shaft, and a second clutch is provided on the outer side of the lower section of the brake gear shaft.

[0013] Furthermore, the brake includes a stator and a rotor, with the stator fixedly connected to the housing assembly and the rotor fixedly connected to the brake gear shaft.

[0014] Furthermore, the second clutch includes a second clutch rotor and a second clutch friction disc. The second clutch rotor is fixedly connected to the brake gear shaft, and the second clutch friction disc is fixedly connected to the second coupling frame. The external spline of the second coupling frame is connected to the internal spline of the output shaft. The output shaft is the second power output.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention provides a dual-speed ratio dual-output planetary reducer, which can provide two sets of power outputs in the case of a single power source through a simple mechanical transmission structure and existing clutches and brakes. One set of power outputs can provide two reduction ratios to meet the power output requirements.

[0017] 2. The second power output of the present invention can be switched between output and non-output at any time to meet usage requirements.

[0018] 3. The two power sources of the present invention have consistent rotational speeds when input. Attached Figure Description

[0019] To clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0020] Figure 1 This is a cross-sectional view of a dual-speed ratio dual-output planetary reducer according to an embodiment of the present invention.

[0021] Among them, 1-housing assembly, 101-first clutch housing, 102-upper housing, 103-lower housing, 104-end cover, 105-second clutch housing, 106-brake housing, 2-first clutch, 201-first clutch rotor, 202-first clutch friction disc, 3-first planetary assembly, 301-input shaft, 302-first bearing, 303-first coupling, 304-second bearing, 305-third bearing, 306-internal and external gear rings, 307-first thrust bearing, 308-first planetary carrier, 4-second row Planetary assembly, 401-Second planetary carrier, 402-Double planetary gear, 403-Second thrust bearing, 404-Fourth bearing, 405-Dust seal, 5-Parallel shaft assembly, 501-Brake gear shaft, 502-Fifth bearing, 503-Sixth bearing, 504-Seventh bearing, 505-Parallel gear shaft, 506-Eighth bearing, 6-Brake, 7-Second clutch, 701-Second clutch rotor, 702-Second clutch friction disc, 8-Output assembly, 801-Second coupling, 802-Ninth bearing, 803-Output shaft. Detailed Implementation

[0022] This section describes embodiments of the present invention, used to explain and illustrate the technical solutions of the present invention. Unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are given in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include more than one of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] A dual-speed ratio, dual-output planetary reducer includes a housing assembly 1, a first clutch 2, a first planetary assembly 3, a second planetary assembly 4, a parallel shaft assembly 5, a brake 6, a second clutch 7, and an output assembly 8. The housing assembly 1 provides installation space and fixed support for the other components. The power input is connected to the first planetary assembly 3. The first clutch 2 is located outside the first planetary assembly 3 to lock or unlock it. When locked, the first planetary assembly 3 rotates directly with the power input and no longer produces a deceleration effect; when unlocked, the first planetary assembly 3 can produce a deceleration effect. The output of the first planetary assembly 3 is connected to the second planetary assembly 7. The input of the second planetary assembly 4 is the first power output; the parallel shaft assembly 5 is connected to the inner and outer gear rings 306 of the first planetary assembly 3. When locked, the inner and outer gear rings 306 of the first planetary assembly 3 rotate at the same speed as the power input. When unlocked, the inner and outer gear rings 306 of the first planetary assembly 3 no longer rotate; the upper end of the parallel shaft assembly 5 is connected to the brake 6, and the lower end is connected to the second clutch 7. The second clutch 7 locks or unlocks the output of the parallel shaft assembly 5. When locked, the parallel shaft assembly 5 no longer outputs downward rotation. When unlocked, the parallel shaft assembly 5 generates the second power output downward.

[0026] The first planetary assembly 3 includes an input shaft 301, a first coupling 303, internal and external gear rings 306, and a first planetary carrier 308. The upper end of the input shaft 301 is connected to the power input. The first coupling 303 is rotatably or non-rotatably mounted outside the input shaft 301 according to the control of the first clutch 2. The internal and external gear rings 306 are divided into two fixedly connected parts. The upper part of the internal and external gear rings 306 is provided with internal splines that mesh with the external splines of the first coupling 303. The lower part of the internal and external gear rings 306 is provided with external teeth on the outer side and internal teeth on the inner side. The external teeth of the lower part of the internal and external gear rings 306 mesh with the parallel shaft assembly 5. The bottom of the input shaft 301 is located at the center of the first planetary carrier 308 and meshes with the planets mounted on the first planetary carrier 308. The outer side of the planet gears meshes with the internal teeth of the lower part of the internal and external gear rings 306.

[0027] The first planetary carrier 308 and the planetary gears together with the input shaft 301 constitute the NGW planetary reducer structure.

[0028] The first clutch 2 includes a first clutch rotor 201 and a first clutch friction disc 202. The first clutch rotor 201 is fixedly connected to the input shaft 301, and the first clutch friction disc 202 is fixedly connected to the first coupling frame 303.

[0029] The second planetary assembly 4 is an NW planetary decelerator structure.

[0030] The second planetary assembly 4 includes a second planetary carrier 401, on which a double planetary gear 402 is provided. The output of the first planetary assembly 3 is meshed with the center of the upper part of the double planetary gear 402. The lower outer side of the double planetary gear 402 meshes with the inner spline inside the housing assembly 1. The lower end of the second planetary carrier 401 is provided with a second cylinder, which is the first power output.

[0031] The parallel shaft assembly 5 includes a parallel gear shaft 505 and a brake gear shaft 501. The external teeth of the parallel gear shaft 505 mesh with the external teeth of the inner and outer gear rings 306. The external teeth of the parallel gear shaft 505 mesh with the external teeth in the middle of the brake gear shaft 501. A brake 6 is provided on the outer side of the upper section of the brake gear shaft 501, and a second clutch 7 is provided on the outer side of the lower section of the brake gear shaft 501.

[0032] The brake 6 includes a stator and a rotor. The stator is fixedly connected to the housing assembly, and the rotor is fixedly connected to the brake gear shaft 501.

[0033] The second clutch 7 includes a second clutch rotor 701 and a second clutch friction disc 702. The second clutch rotor 702 is fixedly connected to the brake gear shaft 501, and the second clutch friction disc 702 is fixedly connected to the second coupling frame 802. The external spline of the second coupling frame 802 is connected to the internal spline of the output shaft 803. The output shaft 803 is the second power output.

[0034] The following is another embodiment of the present invention.

[0035] like Figure 1 As shown, this embodiment provides a dual-speed ratio dual-output planetary reducer, including a housing assembly 1 and a first clutch 2, a first planetary assembly 3, a second planetary assembly 4, a parallel shaft assembly 5, a brake 6, a second clutch 7, and an output assembly 8 disposed within the housing assembly 1.

[0036] The first planetary assembly 3 is mounted inside the upper housing 102 via the second bearing 304. The first planetary assembly 3 includes an input shaft 301, on which a first clutch rotor 201 is mounted. The first clutch friction disc 202 is fixedly connected to the first coupling frame 303. The first coupling frame 303 has a first bearing seat inside, which is mounted on the input shaft 301 via the first bearing 302. The first coupling frame 303 has a first external spline outside, which engages with a first internal spline located at one end inside the inner and outer gear rings 306. The inner and outer gear rings have a third bearing seat inside, which is mounted on the input shaft 301 via the third bearing 305.

[0037] Specifically, when the first clutch is energized, the first clutch rotor 201 and the first clutch friction disc 202 engage, and the power of the input shaft 301 is transmitted to the internal and external gear rings 306 through the first coupling 303.

[0038] Furthermore, the inner and outer gear rings 306 are installed in the upper housing 102 through the externally provided second bearing 304. The other end of the outer side of the inner and outer gear rings 306 is provided with a first external tooth, which cooperates with the third external tooth provided on the outside of the parallel gear shaft 505. The other end of the inner and outer gear rings 306 is provided with a first planetary internal gear ring.

[0039] In this example, the first planetary assembly 3 also includes a first planetary carrier 308, on which two sets of planetary gears are provided, namely an outer set of planetary gears and an inner set of planetary gears. The outer set of planetary gears and the inner set of planetary gears are engaged. The outer set of planetary gears meshes with the first internal planetary gear ring of the inner and outer gear rings 306, and the inner set of planetary gears meshes with the first external planetary input gear provided outside the input shaft 301.

[0040] Preferably, the input shaft 301 is externally provided with a first clutch rotor 201, a first bearing 302, a third bearing 305, and a first planetary input external gear. This restricts the number of teeth and module of the first planetary input external gear. To overcome the installation constraints, a sleeve structure with an internally splined external gear is provided externally to the input shaft 301. An external spline is provided externally to the input shaft 301, engaging with the internal spline inside the sleeve structure. This positions the first planetary input external gear outside the sleeve, making the input shaft 301 and its transmission mechanism more compact. Specifically, a first thrust bearing 307 is provided between the end face of the sleeve structure and the end face of the first planetary carrier 308.

[0041] Furthermore, a first cylindrical boss is provided at the center of the other end of the first planetary carrier 308. A second thrust bearing 403 is provided between the end face of the first cylindrical boss and the end face of the second planetary carrier 401, and a second planetary input external gear is provided on the outside of the first cylindrical boss. A double planetary gear 402 is provided on the second planetary carrier 401. One set of the double planetary gear 402 engages with a second planetary internal gear ring provided in the end cover 104, and the other set of the double planetary gear 402 engages with the second planetary input external gear. A second cylindrical boss is provided at the center of the other end of the second planetary carrier 401, and the second cylindrical boss is installed in the end cover 104 through a fourth bearing 404.

[0042] Specifically, the parallel shaft assembly 5 includes a parallel gear shaft 505 and a brake gear shaft 501. The parallel gear shaft 505 is mounted in the upper housing 102 and the lower housing 103 via a sixth bearing 503 and a seventh bearing 504. The brake gear shaft 501 is mounted in the upper housing 102 and the lower housing 103 via a fifth bearing 502 and an eighth bearing 506. The brake gear shaft 501 is provided with a fourth external tooth. The third external tooth of the parallel gear shaft 505 meshes with the first external tooth of the inner and outer gear rings 306 and the fourth external tooth of the brake gear shaft 501.

[0043] Furthermore, the brake 6 includes a stator and a rotor. The stator is fixedly connected to the housing assembly 1, and the rotor is fixedly connected to the brake gear shaft 501. The second clutch 7 includes a second clutch rotor 701 and a second clutch friction disc 702. The second clutch rotor 701 is fixedly connected to the brake gear shaft 501, and the second clutch friction disc 702 is fixedly connected to a second coupling frame 801. The second coupling frame 801 is mounted on the brake gear shaft 501 via a ninth bearing 802 disposed inside it. The second coupling frame 801 has a third external spline on its exterior, which mates with a third internal spline disposed inside the output shaft 805.

[0044] In this embodiment, the dual-speed ratio and dual-power output function of the reducer is realized by the states of the first clutch 2, the brake 6, and the second clutch 7.

[0045] (1) Low-speed single power output

[0046] The first planetary assembly 3 and the second planetary assembly 4 provide a large reduction ratio, while the second planetary carrier 401 outputs power at low speed. At this time, the first clutch 2 is de-energized, and the brake 6 is energized. With the brake 6 energized, the brake gear shaft 501 is braked, the parallel gear shaft 505 is braked, and consequently, the internal and external ring gears 306 are braked. Power is input from the input shaft 301, and the first planetary assembly 3 becomes an NGW planetary reducer with sun gear input, fixed ring gear, and planetary carrier output. The power is then reduced and increased in torque by the second planetary assembly 4, and the low-speed power output function is achieved through the second planetary carrier 401.

[0047] (2) High-speed single power output

[0048] The first planetary assembly 3 is isolated, with the reduction ratio provided solely by the second planetary assembly 4, enabling high-speed output from the second planetary carrier 401. The first clutch 2 is energized, while the brake 6 and second clutch 7 are de-energized. With the brake 6 de-energized, the brake gear shaft 701 and parallel gear shaft 705 can rotate freely, allowing the inner and outer gear rings 306 to rotate freely as well. With the second clutch 7 de-energized, power cannot be transmitted from the brake gear shaft 501 to the output assembly 8. With the first clutch 2 energized, the first clutch rotor 201 and the first clutch friction disc 202 engage, and the power from the input shaft 301 is transmitted to the inner and outer gear rings 306 via the first coupling 303. This means the input shaft 301 and the inner and outer gear rings 306 rotate at the same speed. The first planetary assembly loses its reduction function, and the power from the input shaft 301 is directly reduced and increased in torque via the second planetary assembly 4, enabling the second planetary carrier 401 to achieve high-speed power output.

[0049] (3) High-speed dual power output

[0050] As can be seen from (2) high-speed single power output, the first clutch 2 is energized, the brake 6 is de-energized, and the second planetary carrier 401 achieves high-speed power output.

[0051] The power of the input shaft 301 is transmitted to the internal and external gear rings 306. The power of the internal and external gear rings 306 is transmitted to the second clutch rotor 701 via the parallel gear shaft 505 and the brake gear shaft 501. At this time, the second clutch 7 is energized, and the second clutch rotor 701 and the second clutch friction disc 702 are engaged. That is, the power of the second clutch rotor 701 can be transmitted to the output shaft 803 through the second coupling 801, so the output shaft 803 obtains power output.

[0052] (4) Braking

[0053] As can be seen from the high-speed dual power output condition (3), the first clutch 2 is energized, the second clutch 7 is energized, the second planetary carrier 401 and the output shaft 803 output power at the same time, and the power output path passes through the brake gear shaft 501. At this time, if the brake 6 is energized, the second planetary carrier 401 and the output shaft 803 can be braked at the same time.

[0054] Under the above structure, the dual-speed ratio dual-output planetary reducer of the present invention can realize single-power output with two reduction ratios, dual-power output and braking function with only a single power input.

[0055] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will readily understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A dual-speed ratio dual-output planetary reducer, characterized in that, The assembly includes a housing assembly (1), a first clutch (2), a first planetary assembly (3), a second planetary assembly (4), a parallel shaft assembly (5), a brake (6), a second clutch (7), and an output assembly (8). The housing assembly (1) provides installation space and fixed support for the other components. The power input is connected to the first planetary assembly (3). The first clutch (2) is located outside the first planetary assembly (3) to lock or unlock it. After locking, the first planetary assembly (3) rotates directly with the power input and no longer produces a deceleration effect. After unlocking, the first planetary assembly... Component (3) can generate a deceleration effect; the output of the first planetary assembly (3) is connected to the input of the second planetary assembly (4), and the output of the second planetary assembly (4) is the first power output; the parallel shaft assembly (5) is connected to the inner and outer gear rings (306) of the first planetary assembly (3) for transmission. After locking, the inner and outer gear rings (306) of the first planetary assembly (3) rotate at the same speed as the power input. After unlocking, the inner and outer gear rings (306) of the first planetary assembly (3) no longer rotate; the upper end of the parallel shaft assembly (5) is connected to the brake (6), and the lower end is connected to the second clutch (7). The clutch (7) locks or unlocks the output of the parallel shaft assembly (5). When locked, the parallel shaft assembly (5) no longer outputs downward rotation; when unlocked, it generates a second power output downward. The first planetary assembly (3) includes an input shaft (301), a first coupling (303), internal and external gear rings (306), and a first planetary carrier (308). The upper end of the input shaft (301) is connected to the power input. The first coupling (303) is rotatably or non-rotatably mounted outside the input shaft (301) according to the control of the first clutch (2). The internal and external gear rings (306, 307, 308) 306) is divided into two fixedly connected parts, upper and lower. The upper part of the inner and outer gear ring (306) is provided with an internal spline that meshes with the external spline of the first coupling frame (303). The lower part of the inner and outer gear ring (306) is provided with external teeth on the outer side and internal teeth on the inner side of the lower part of the inner and outer gear ring (306). The external teeth of the lower part of the inner and outer gear ring (306) mesh with the parallel shaft assembly (5). The bottom of the input shaft (301) is located at the center of the first planetary carrier (308) and meshes with the planets installed on the first planetary carrier (308). The outer side of the planet gear meshes with the internal teeth of the lower part of the inner and outer gear ring (306).

2. The dual-speed ratio dual-output planetary reducer according to claim 1, characterized in that, The first planetary carrier (308) and planetary gears together with the input shaft (301) constitute the NGW planetary reducer structure.

3. The dual-speed ratio dual-output planetary reducer according to claim 1, characterized in that, The first clutch (2) includes a first clutch rotor (201) and a first clutch friction disc (202). The first clutch rotor (201) is fixedly connected to the input shaft (301), and the first clutch friction disc (202) is fixedly connected to the first coupling (303).

4. A dual-speed ratio dual-output planetary reducer according to claim 1, characterized in that, The second planetary assembly (4) is an NW planetary decelerator structure.

5. A dual-speed ratio dual-output planetary reducer according to claim 4, characterized in that, The second planetary assembly (4) includes a second planetary carrier (401), on which a double planetary gear (402) is provided. The output of the first planetary assembly (3) is meshed with the center of the upper part of the double planetary gear (402). The lower outer side of the double planetary gear (402) meshes with the internal spline inside the housing assembly (1). The lower end of the second planetary carrier (401) is provided with a second cylinder, which is the first power output.

6. A dual-speed ratio dual-output planetary reducer according to claim 1, characterized in that, The parallel shaft assembly (5) includes a parallel gear shaft (505) and a brake gear shaft (501). The external teeth of the parallel gear shaft (505) mesh with the external teeth of the inner and outer gear rings (306). The external teeth of the parallel gear shaft (505) mesh with the external teeth in the middle of the brake gear shaft (501). A brake (6) is provided on the outer side of the upper section of the brake gear shaft (501), and a second clutch (7) is provided on the outer side of the lower section of the brake gear shaft (501).

7. A dual-speed ratio dual-output planetary reducer according to claim 6, characterized in that, The brake (6) includes a stator and a rotor. The stator is fixedly connected to the housing assembly, and the rotor is fixedly connected to the brake gear shaft (501).

8. A dual-speed ratio dual-output planetary reducer according to claim 6, characterized in that, The second clutch (7) includes a second clutch rotor (701) and a second clutch friction disc (702). The second clutch rotor (702) is fixedly connected to the brake gear shaft (501), and the second clutch friction disc (702) is fixedly connected to the second coupling (802). The external spline of the second coupling (802) is connected to the internal spline of the output shaft (803). The output shaft (803) is the second power transmission shaft.

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