Gear motor
By designing a detachable and connected reducer motor, the problem of integrating motors and reducers in the existing technology requires factory maintenance, realizing structural integration and convenient maintenance and maintenance, ensuring the safety of lubricating oil.
Patent Information
- Application Number
- CN202420284415.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-02-06
AI Technical Summary
In the case of high power and high torque, the existing gear reducer integrates the motor and reducer into an integrated structure, resulting in the need to be returned to the factory for repair in the event of a failure, increasing transportation costs, and easily damage the intact modules during disassembly and assembly.
Design a removable connected reducer motor. The motor housing and the reducer housing are meshed through internal and external splines to realize the separation of the motor and reducer. The motor output shaft extends into the sun shaft, and cooperates with the sealing component to ensure sealing and Lubrication effect.
It realizes the characteristics of structural integration and convenient maintenance and maintenance, avoids the whole machine back to the factory for repair, reduces transportation and maintenance costs, and ensures the safety of lubricant without leakage.
Smart Images
Figure CN222254973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power transmission, and more specifically, to a geared motor. Background Technology
[0002] In high-power, high-torque applications, motors are often used in conjunction with reducers. To reduce the overall size, weight, and cost of the machine, some geared motors on the market integrate the motor module and the reduction module into a single integrated structure.
[0003] If either the motor module or the reduction module of this type of geared motor fails, the entire machine needs to be returned to the factory for repair. This will result in excessively high transportation costs, and the intact motor module or reduction module is easily damaged during transportation and disassembly. Utility Model Content
[0004] The purpose of this utility model is to provide a geared motor, in which the motor and the reducer can be integrated into a whole structure or separated from each other, combining the features of integrated structure and convenient maintenance and repair.
[0005] The embodiments of this utility model provide a technical solution:
[0006] A geared motor, comprising:
[0007] A speed reducer includes a speed reducer housing, a planetary gear assembly, and a sealing assembly. The planetary gear assembly is rotatably disposed inside the speed reducer housing. The speed reducer housing has a through-hole. The planetary gear assembly includes a sun gear shaft, one end of which extends into the first mating hole. The sealing assembly is sleeved on the outer wall of the sun gear shaft and mates with the wall of the first mating hole. The sun gear shaft is provided with an internal spline.
[0008] The motor includes a motor housing and a motor output shaft. The motor housing is detachably connected to the reducer housing. The motor output shaft is rotatably mounted on the motor housing. The motor output shaft is provided with an external spline. One end of the motor output shaft extends into the sun gear shaft. The external spline meshes with the internal spline.
[0009] In an optional embodiment, the sealing assembly includes a first stop ring and a first oil seal, the first stop ring being sleeved on the sun gear shaft, and the first oil seal being sleeved on the first stop ring and engaging with the wall of the first mating hole.
[0010] In an optional embodiment, the wall of the first mating hole is provided with a first oil guiding slope and a first oil seal seat in sequence along the axial direction, and the first oil guiding slope is closer to the interior of the reducer housing. The first stop ring is provided with a second oil guiding slope and a sealing surface, the second oil guiding slope and the first oil guiding slope are arranged opposite to each other, and the first oil seal is sleeved on the sealing surface and mates with the first oil seal seat.
[0011] In an optional embodiment, an oil-throwing channel is formed between the first oil-guiding inclined surface and the second oil-guiding inclined surface, and the distance between the oil-throwing channel and the axis of the first mating hole gradually increases from the end closer to the first oil seal to the end farther away from the first oil seal.
[0012] In an optional embodiment, a first bearing seat is further provided on the wall of the first mating hole. The first bearing seat, the first oil guide inclined surface and the first oil seal seat are arranged sequentially along the axial direction of the first mating hole. A first bearing is provided between the first bearing seat and the outer wall of the sun gear shaft.
[0013] In an optional embodiment, the reducer housing includes a first side shell and a first rear flange. The first rear flange is connected to the first side shell and covers one end opening of the first side shell. The first mating hole is provided on the first rear flange, and the motor housing is inserted into the first rear flange.
[0014] In an optional embodiment, a first flange and a second flange are respectively provided on opposite sides of the first rear flange. The first flange extends into the opening of the first side shell and is inserted into the first side shell. The second flange extends into the motor housing and is inserted into the motor housing.
[0015] In an optional embodiment, a first groove is recessed on the outer sidewall of the first flange, and a first sealing ring is embedded in the first groove, the outer edge of the first sealing ring abutting against the first side shell; and / or,
[0016] A second groove is recessed on the outer side wall of the second flange, and a second sealing ring is embedded in the second groove. The outer edge of the second sealing ring abuts against the motor housing.
[0017] In an optional embodiment, the planetary gear assembly further includes a plurality of planetary gears, a planet carrier is provided on the inner sidewall of the reducer housing, and the plurality of planetary gears are disposed between the planet carrier and the sun gear shaft and mesh with the planet carrier and the sun gear shaft;
[0018] The reducer also includes a reducer output shaft that is rotatably fitted with the reducer housing. One end of the reducer output shaft is provided with a plurality of planetary shafts, and a plurality of planetary gears are rotatably fitted on the plurality of planetary shafts. The other end of the reducer output shaft extends out of the reducer housing and is sealed to the reducer housing.
[0019] In an optional embodiment, the reducer further includes a second bearing, which and the sealing assembly are respectively sleeved on the outer side walls of the opposite ends of the sun gear shaft; a second bearing housing is also provided on the output shaft of the reducer, and the outer edge of the second bearing cooperates with the second bearing housing.
[0020] Compared to existing technologies, the geared motor provided in this embodiment features a detachable connection between the motor housing and the reducer housing, with the motor output shaft extending into the sun gear shaft of the reducer to achieve internal and external spline engagement. In operation, the motor and reducer form a single integrated structure. When maintenance or repair is required on either the motor or the reducer, simply disconnecting the motor housing from the reducer housing and removing the motor output shaft from the sun gear shaft allows the motor and reducer to be separated into two independent structures. Therefore, the geared motor provided by this invention offers the advantages of both integrated structure and convenient maintenance. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.
[0022] Figure 1 A cross-sectional structural diagram of the geared motor portion provided for an embodiment of this utility model;
[0023] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;
[0024] Figure 3 This is a sectional view of the speed reducer;
[0025] Figure 4 This is a cross-sectional view of the first side shell;
[0026] Figure 5 This is a sectional view of the first rear flange;
[0027] Figure 6 This is a sectional view of the first front flange;
[0028] Figure 7 for Figure 3 Enlarged view of region A in the middle;
[0029] Figure 8 This is a cross-sectional view of the first stop ring;
[0030] Figure 9 for Figure 3 Enlarged view of region B in the middle;
[0031] Figure 10 for Figure 3 Enlarged view of region C in the middle;
[0032] Figure 11 This is a sectional view of the reducer's output shaft.
[0033] Figure 12 This is a partial structural cross-sectional view of the planetary gear;
[0034] Figure 13 A cross-sectional structural diagram of the motor section;
[0035] Figure 14 This is a sectional view of the sun gear shaft;
[0036] Figure 15 This is a schematic diagram of the motor output shaft.
[0037] Icons: 10-Geared motor; 100-Gearbox; 110-Gearbox housing; 111-First side shell; 1111-First open end; 1112-Second open end; 1113-Planet carrier; 112-First rear flange; 1121-First flange; 1123-First groove; 1124-Second flange; 1125-Second groove; 1126-First mating hole; 1127-First bearing seat; 1128-First oil guide slope; 1129-First oil seal seat; 113-First front flange; 1131-Third flange; 1132-Third groove; 1133-Second mating hole; 1134-Second oil seal seat; 1135-Third bearing seat; 120-Planetary gear assembly; 121-Sun gear shaft; 1211-Internal spline ; 122-Planetary gear; 1221-Wear-resistant sleeve; 1222-First slot; 1223-Bore retaining ring; 130-Sealing assembly; 131-First stop ring; 1311-Second oil guide slope; 1312-Sealing surface; 132-First oil seal; 140-Reducer output shaft; 141-Planetary shaft; 1411-Second slot; 1412-Shaft retaining ring; 142-Second bearing housing; 143-Second stop ring; 144-Second oil seal; 150-First bearing; 160-Second bearing; 170-Third bearing; 200-Motor; 210-Motor housing; 211-Second side shell; 212-Second rear flange; 213-Second front flange; 220-Motor output shaft; 221-External spline; 300-Connecting water pipe. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0042] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0044] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0045] Example
[0046] Please refer to the following: Figure 1 and Figure 2 , Figure 1 The diagram shown is a cross-sectional view of the geared motor 10 parts provided in this embodiment. Figure 2 As shown Figure 1 A schematic diagram of its decomposed structure.
[0047] The geared motor 10 provided in this embodiment includes a reducer 100 and a motor 200, which are detachably connected. In practical applications, the reducer 100 and motor 200 are connected to form an integrated structure, thereby reducing size, weight, and cost. When either the reducer 100 or the motor 200 requires maintenance or repair, they can be separated into two independent units, avoiding the inconvenience of returning the entire machine to the factory for repair.
[0048] Please refer to the following: Figure 3 , Figure 3 The figure shown is a cross-sectional view of the reducer 100.
[0049] The reducer 100 includes a reducer housing 110, a planetary gear assembly 120, a sealing assembly 130, and a reducer output shaft 140.
[0050] The reducer housing 110 includes a first side shell 111, a first rear flange 112, and a first front flange 113. The first side shell 111 is cylindrical and open at both ends. The first rear flange 112 and the first front flange 113 respectively cover the opposite ends of the first side shell 111 and are connected to the first side shell 111.
[0051] Please refer to the following: Figure 4 , Figure 5 and Figure 6 , Figure 4 The image shown is a cross-sectional view of the first side shell 111. Figure 5 The image shown is a sectional view of the first rear flange 112. Figure 6 The image shown is a cross-sectional view of the first front flange 113.
[0052] In this embodiment, a first flange 1121 and a second flange 1124 are respectively provided on opposite sides of the first rear flange 112. The first flange 1121 extends into the opening of one end of the first side shell 111 and is inserted into the first side shell 111. The second flange 1124 extends into the motor housing 210 and is inserted into the motor housing 210. A first mating hole 1126 is provided through the middle position of the first rear flange 112.
[0053] The first side shell 111 is defined with its two opposite ends as a first open end 1111 and a second open end 1112, respectively. A first flange 1121 is inserted into the first open end 1111, and the end wall of the first open end 1111 contacts the first rear flange 112. In this embodiment, the end face of the first rear flange 112 and one end of the first side shell 111 are connected by screws. To ensure sealing, a first groove 1123 is recessed on the outer side wall of the first flange 1121, and a first sealing ring is embedded in the first groove 1123. The outer edge of the first sealing ring abuts against the inner side wall of the first open end 1111.
[0054] Similarly, a second groove 1125 is recessed on the outer side wall of the second flange 1124, and a second sealing ring is embedded in the second groove 1125. The outer edge of the second sealing ring abuts against the inner side wall of the motor housing 210. It should be noted that, in this embodiment, in addition to being inserted into the first rear flange 112, the motor housing 210 is also connected to the first side shell 111 by screws.
[0055] Specifically, a through hole is provided on the first side shell 111, extending from the end wall of the second opening end 1112 to the end wall of the first opening end 1111. A threaded hole is provided on the motor housing 210. A screw passes through the through hole on the first side shell 111 and is screwed into the threaded hole on the motor housing 210 to lock the motor housing 210 and the reducer housing 110.
[0056] A third flange 1131 protrudes from one side of the first front flange 113, extending into and engaging with the second opening end 1112. Similarly, to ensure the sealing of the reducer housing 110, a third groove 1132 is recessed on the outer side wall of the third flange 1131, and a third sealing ring is embedded in the third groove 1132. The outer edge of the third sealing ring abuts against the inner side wall of the second opening end 1112. A second mating hole 1133, coaxial with the first mating hole 1126, is provided through the middle position of the first front flange 113.
[0057] The planetary gear assembly 120 is housed within the reducer housing 110, specifically including a sun gear shaft 121 and a plurality of planet gears 122. A planet carrier 1113 is circumferentially arranged on the inner side wall of the first side housing 111, and the plurality of planet gears 122 are disposed between the planet carrier 1113 and the sun gear shaft 121 and mesh with the planet carrier 1113 and the sun gear shaft 121.
[0058] One end of the reducer output shaft 140 is provided with multiple planetary shafts 141, and multiple planetary gears 122 are rotatably sleeved on the multiple planetary shafts 141. The other end of the reducer output shaft 140 extends out of the reducer housing 110 through the second mating hole 1133 and is sealed to the reducer housing 110.
[0059] Please refer to the following: Figure 7 , Figure 7 As shown Figure 3 An enlarged schematic diagram of region A in the middle.
[0060] One end of the sun gear shaft 121 extends into the first mating hole 1126 through the first rear flange 112. The sealing assembly 130 is sleeved on the outer wall of the sun gear shaft 121 and mates with the hole wall of the first mating hole 1126 to seal the gap between the sun gear shaft 121 and the hole wall of the first mating hole 1126. The sun gear shaft 121 is provided with an internal spline 1211.
[0061] In this embodiment, the sealing assembly 130 includes a first stop ring 131 and a first oil seal 132. The first stop ring 131 is sleeved on the sun gear shaft 121, and the first oil seal 132 is sleeved on the first stop ring 131 and mates with the hole wall of the first mating hole 1126.
[0062] The first mating hole 1126 has a first bearing seat 1127, a first oil guide slope 1128 and a first oil seal seat 1129 arranged sequentially along the axial direction on the hole wall. The first bearing seat 1127 is closest to the interior of the reducer housing 110. A first bearing 150 is arranged between the first bearing seat 1127 and the outer side wall of the sun gear shaft 121.
[0063] Please refer to the following: Figure 8 , Figure 8 The image shown is a cross-sectional view of the first stop ring 131.
[0064] The first stop ring 131 is provided with a second oil guiding slope 1311 and a sealing surface 1312. The second oil guiding slope 1311 is arranged opposite to the first oil guiding slope 1128. The first oil seal 132 is sleeved on the sealing surface 1312 and cooperates with the first oil seal seat 1129.
[0065] The inner edge of the first bearing 150 is fitted onto the outer wall of the sun gear shaft 121, and the outer edge of the first bearing 150 engages with the first bearing housing 1127, thereby enabling the sun gear shaft 121 to rotate relative to the first rear flange 112. The first stop ring 131 is fitted onto the sun gear shaft 121, serving to stop and limit the movement of the first bearing 150.
[0066] Understandably, the first stop ring 131 and the sun gear shaft 121 are interference-fitted, with no gap between them. The inner edge of the first oil seal 132 is fitted onto the sealing surface 1312 provided on the first stop ring 131, and the outer edge of the first oil seal 132 mates with the first oil seal seat 1129, thereby sealing the gap between the first stop ring 131 and the first rear flange 112.
[0067] In addition, in order to ensure installation accuracy and reduce processing costs, in this embodiment, the first stop ring 131 is provided with a stepped hole, and the smaller section of the stepped hole fits against the outer wall of the sun gear shaft 121.
[0068] In this embodiment, an oil-throwing channel is formed between the first oil-guiding inclined surface 1128 and the second oil-guiding inclined surface 1311, and the distance between the oil-throwing channel and the axis of the first mating hole 1126 gradually increases from the end near the first oil seal 132 to the end away from the first oil seal 132.
[0069] In practical applications, as the second oil guide slope 1311 rotates with the sun gear shaft 121, a linear velocity difference will occur at different positions within the second oil guide slope 1311. The lubricating oil inside the gearbox housing, after passing through the first bearing 150 and entering the oil slinger channel, will be slinged onto the first oil guide slope 1128 under the influence of this linear velocity difference, and then flow back along the first oil guide slope 1128 to the interior of the reducer housing 110. In other words, the first stop ring 131 also serves to cooperate with the first rear flange 112 to prevent lubricating oil leakage.
[0070] In this embodiment, the reducer 100 further includes a second bearing 160, which and the sealing assembly 130 are respectively sleeved on the outer side walls of the opposite ends of the sun gear shaft 121; a second bearing seat 142 is also provided on the reducer output shaft 140, and the outer edge of the second bearing 160 cooperates with the second bearing seat 142.
[0071] Please refer to the following: Figure 9 , Figure 9 As shown Figure 3 Enlarged schematic diagram of region B in the middle.
[0072] In this embodiment, a third bearing seat 1135 is provided on the first front flange 113, and a third bearing 170 is sleeved on the outer side wall of the reducer output shaft 140. The outer edge of the third bearing 170 cooperates with the third bearing seat 1135, thereby realizing the rotatable cooperation between the reducer output shaft 140 and the first front flange 113.
[0073] A second stop ring 143 is also fitted on the outer wall of the reducer output shaft 140. The second stop ring 143 serves to stop and limit the third bearing 170. Similarly, the second stop ring 143 is interference-fitted with the reducer output shaft 140, and there is no clearance between them.
[0074] To improve the sealing effect, a second oil seal 144 is fitted on the second stop ring 143, and a second oil seal seat 1134 is provided on the hole wall of the second mating hole 1133. The outer edge of the second oil seal 144 mates with the second oil seal seat 1134, thereby sealing the gap between the second stop ring 143 and the hole wall of the second mating hole 1133.
[0075] As can be seen, through the sealing of the first rear flange 112 with the first open end 1111, the sealing of the first rear flange 112 with the sun gear shaft 121, the sealing of the first front flange 113 with the second open end 1112, and the sealing of the first front flange 113 with the reducer output shaft 140, a sealed chamber is formed inside the reducer housing 110. In other words, whether the reducer 100 and the motor 200 are connected as an integral structure or the reducer 100 and the motor 200 are separated, the lubricating oil inside the reducer housing 110 will not leak out, thus providing higher safety.
[0076] Please refer to the following: Figure 10 , Figure 11 and Figure 12 , Figure 10 for Figure 3 Enlarged diagram of region C in the middle. Figure 11 This is a sectional view of the reducer output shaft 140. Figure 12 This is a partial structural cross-sectional view of planetary gear 122.
[0077] In this embodiment, the bearing of the planetary gear 122 is sleeved on the planetary shaft 141, and wear-resistant sleeves 1221 are provided on both the left and right sides of the ball bearing track of the planetary gear 122. Two first grooves 1222 are respectively provided around the inner sidewall of the planetary gear 122 at both ends of its bearing, and a retaining ring 1223 for holes is embedded in each of the two first grooves 1222 to restrict the axial movement of the planetary gear 122 on the planetary shaft 141.
[0078] Furthermore, a second groove 1411 is provided around the outer side wall of the planetary shaft 141, and a shaft retaining ring 1412 is embedded in the second groove 1411 to restrict the axial movement of the bearing of the planetary gear 122 on the planetary shaft 141.
[0079] Please refer to the following: Figure 13 , Figure 14 and Figure 15 , Figure 13 The diagram shown is a cross-sectional view of motor 200. Figure 14 The image shown is a cross-sectional view of the sun gear shaft 121. Figure 15 The diagram shown is a structural schematic of the motor output shaft 220.
[0080] The motor 200 includes a motor housing 210 and a motor output shaft 220. The motor housing 210 is detachably connected to the reducer housing 110. The motor output shaft 220 is rotatably mounted on the motor housing 210. The motor output shaft 220 is provided with an external spline 221. One end of the motor output shaft 220 extends into the sun gear shaft 121. The external spline 221 meshes with the internal spline 1211.
[0081] In this embodiment, the motor housing 210 includes a second side shell 211, a second rear flange 212, and a second front flange 213. The second side shell 211 is also cylindrical. The second rear flange 212 and the second front flange 213 are respectively connected to the second side shell 211 and cover the opposite ends of the second side shell 211. The motor output shaft 220 is rotatably engaged with the second rear flange 212 and the second front flange 213 through two bearings, and one end of the motor output shaft 220 with an external spline 221 extends through the second front flange 213 to the outside of the motor housing 210.
[0082] In this embodiment, the second front flange 213 is recessed relative to the end wall of the second side shell 211, and the second flange 1124 on the first rear flange 112 extends into the second side shell 211 and is inserted into it. The outer edge of the second sealing ring abuts against the inner wall of the second side shell to achieve a seal. Similarly, the first side shell 111 is connected to the second side shell 211 by screws to lock the reducer housing 110 and the motor housing 210.
[0083] In addition, the geared motor 10 provided in this embodiment also includes a connecting water pipe 300. The first side shell 111 and the second side shell 211 are both provided with water cooling chambers, and the water cooling chambers between the two are connected by the connecting water pipe 300.
[0084] In summary, the geared motor 10 provided in this embodiment can be integrated into a single machine structure, with the motor 200 and the reducer 100 both being detachable from each other, combining structural integration with convenient maintenance and repair. Furthermore, the reducer 100 is independently sealed, preventing lubricant leakage when separated from the motor 200, thus providing enhanced safety.
[0085] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A reduction motor, characterized in that: include: A reducer (100), the reducer (100) comprising a reducer housing (110), a planetary gear assembly (120) and a sealing assembly (130), the planetary gear assembly (120) being rotatably arranged inside the reducer housing (110), the reducer housing (110) having a first matching hole (1126) extending therethrough, the planetary gear assembly (120) comprising a sun gear shaft (121), one end of the sun gear shaft (121) extending into the first matching hole (1126), the sealing assembly (130) being sleeved on the outer side wall of the sun gear shaft (121) and matching with the hole wall of the first matching hole (1126), the sun gear shaft (121) being provided with an internal spline (1211); A motor (200), the motor (200) comprising a motor housing (210) and a motor output shaft (220), the motor housing (210) being detachably connected to the reducer housing (110), the motor output shaft (220) being rotatably arranged on the motor housing (210), the motor output shaft (220) being provided with an external spline (221), one end of the motor output shaft (220) extending into the sun gear shaft (121), the external spline (221) being meshed with the internal spline (1211).
2. The reduction motor according to claim 1, characterized in that: The sealing assembly (130) comprises a first stop ring (131) and a first oil seal (132); the first stop ring (131) is sleeved on the sun gear shaft (121); the first oil seal (132) is sleeved on the first stop ring (131) and is matched with the hole wall of the first matching hole (1126).
3. The reduction motor according to claim 2, characterized in that: The hole wall of the first matching hole (1126) is provided with a first oil guiding slope (1128) and a first oil seal seat (1129) in sequence along the axial direction, and the first oil guiding slope (1128) is closer to the interior of the reducer housing (110); the first stop ring (131) is provided with a second oil guiding slope (1311) and a sealing surface (1312), respectively; the second oil guiding slope (1311) and the first oil guiding slope (1128) are arranged opposite to each other; the first oil seal (132) is sleeved on the sealing surface (1312) and matched with the first oil seal seat (1129).
4. The reduction motor according to claim 3, characterized in that: An oil-slinging channel is formed between the first oil-guiding inclined surface (1128) and the second oil-guiding inclined surface (1311), and the distance between the oil-slinging channel and the axis of the first matching hole (1126) gradually increases from an end close to the first oil seal (132) to an end far from the first oil seal (132).
5. The reduction motor according to claim 3, characterized in that: A first bearing seat (1127) is also arranged on the hole wall of the first matching hole (1126); the first bearing seat (1127), the first oil guide slope (1128) and the first oil seal seat (1129) are arranged in sequence along the axial direction of the first matching hole (1126); and a first bearing (150) is arranged between the first bearing seat (1127) and the outer wall of the sun gear shaft (121).
6. The reduction motor according to claim 1, characterized in that: The reducer housing (110) comprises a first side housing (111) and a first rear flange (112); the first rear flange (112) is connected to the first side housing (111) and covers an opening at one end of the first side housing (111); the first matching hole (1126) is arranged on the first rear flange (112); and the motor housing (210) is plugged into the first rear flange (112).
7. The reduction motor according to claim 6, characterized in that: A first flange (1121) and a second flange (1124) are respectively protruded on opposite sides of the first rear flange (112); the first flange (1121) extends into an opening at one end of the first side shell (111) and is plugged into the first side shell (111); and the second flange (1124) extends into the motor housing (210) and is plugged into the motor housing (210).
8. The reduction motor according to claim 7, characterized in that: A first embedding groove (1123) is recessed on the outer side wall of the first flange (1121), a first sealing ring is embedded in the first embedding groove (1123), and the outer edge of the first sealing ring abuts against the first side shell (111); and / or, A second embedding groove (1125) is recessed on the outer side wall of the second flange (1124), a second sealing ring is embedded in the second embedding groove (1125), and the outer edge of the second sealing ring abuts against the motor housing (210).
9. The reduction motor according to claim 1, characterized in that: The planetary gear assembly (120) further comprises a plurality of planetary gears (122); a planetary carrier (1113) is provided on the inner side wall of the reducer housing (110); the plurality of planetary gears (122) are provided between the planetary carrier (1113) and the sun gear shaft (121) and mesh with the planetary carrier (1113) and the sun gear shaft (121); The reducer (100) further comprises a reducer output shaft (140) rotatably matched with the reducer housing (110); a plurality of planetary shafts (141) are arranged at one end of the reducer output shaft (140); a plurality of planetary gears (122) are rotatably sleeved on the plurality of planetary shafts (141), and the other end of the reducer output shaft (140) extends out of the reducer housing (110) and is sealed and matched with the reducer housing (110).
10. The reduction motor according to claim 9, characterized in that: The reducer (100) further comprises a second bearing (160), wherein the second bearing (160) and the sealing assembly (130) are respectively sleeved on the outer side walls at two opposite ends of the sun gear shaft (121); A second bearing seat (142) is also provided on the reducer output shaft (140), and the outer edge of the second bearing (160) cooperates with the second bearing seat (142).