Output end assembly of rotary speed reducer

Abstract

The utility model provides an output end assembly of a rotary speed reducer, and relates to the field of speed reducers. The rotary speed reducer output end assembly comprises a shell, an output subassembly and a supporting assembly, the shell is provided with an assembling hole, an inner roller path is arranged on the hole wall of the assembling hole, and the output subassembly is arranged in the assembling hole in a penetrating mode; the output subassembly comprises an output shaft and a planet carrier which are connected, at least one of the output shaft and the planet carrier is provided with an outer roller path, the supporting assembly comprises a retainer and a plurality of rolling bodies positioned through the retainer, and the rolling bodies are all embedded in the inner roller path and the outer roller path. The output end assembly of the rotary speed reducer is few in parts, convenient to assemble and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of speed reducers, and more particularly, to an output end assembly of a slewing speed reducer. Background Art

[0002] Common slewing speed reducers, such as yaw and pitch speed reducers of wind turbine generators, and slewing speed reducers used in construction machinery, etc., are usually multi-stage planetary gear train drive systems. The common structures of their output ends include a housing, an output gear shaft, two tapered roller bearings, a planetary carrier, a ring gear, and a sealing structure, etc. The gear on the output gear shaft serves as the output mechanism of the speed reducer and meshes with the driven component to achieve power transmission. A spline structure is provided at the small end of the output gear shaft and is connected to the planetary gear train of the planetary speed reducer. The large end of the output gear shaft is a gear structure to achieve power transmission. The output gear shaft is pressed in the housing through two tapered roller bearings. The internal gear ring is a part of the final-stage planetary gear train of the slewing speed reducer and is connected to the housing by bolts. The tapered roller bearings arranged on the planetary carrier are lubricated with lubricating oil and sealed with multiple side-by-side skeleton oil seals. The bearings arranged on the output gear shaft are lubricated with grease and sealed with metal sealing rings. The inner ring of the bearing is locked by a round nut.

[0003] The inventor has found through research that the output structure of the existing slewing speed reducer has at least the following disadvantages:

[0004] There are many components, inconvenient assembly, and high cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an output end assembly of a slewing speed reducer, which can reduce the number of components, improve the assembly efficiency, and reduce the cost.

[0006] The embodiments of the utility model are implemented as follows:

[0007] In a first aspect, the utility model provides an output end assembly of a slewing speed reducer, including:

[0008] A housing, an output unit assembly, and a support assembly. The housing is provided with an assembly hole, and an inner raceway is provided on the hole wall of the assembly hole. The output unit assembly is disposed through the assembly hole. The output unit assembly includes an output shaft and a planetary carrier connected together. At least one of the output shaft and the planetary carrier is provided with an outer raceway. The support assembly includes a cage and multiple rolling elements positioned by the cage. The multiple rolling elements are all embedded in the inner raceway and the outer raceway.

[0009] In an optional embodiment, the number of the inner raceways is two and they are arranged at intervals in the axial direction of the assembly hole;

[0010] The output shaft and the planet carrier are respectively provided with an outer raceway, and the outer raceways on the output shaft and the planet carrier respectively cooperate with two inner raceways on the housing in a corresponding manner.

[0011] Based on the above solution, a set of support components can be positioned between the output shaft and the housing, and another set of support components can be positioned between the planet carrier and the housing. Each set of support components omits the structures of the bearing outer ring and the bearing inner ring. The number of parts omitted by the two sets of support components is large, the manufacturing cost is low, the assembly difficulty is low, and at the same time the assembly efficiency is high.

[0012] In an alternative embodiment, an external spline is provided on the outer peripheral surface of the output shaft, a positioning through hole is provided on the planet carrier, an internal spline is provided on the inner wall of the positioning through hole, the output shaft is inserted into the positioning through hole, and the external spline meshes with the internal spline.

[0013] Based on the above solution, by sleeving the planet carrier on the output shaft using the positioning through hole thereon and meshing the external spline with the internal spline, the assembly of the planet carrier and the output shaft can be completed. The assembly operation is simple, the assembly efficiency is high, and the matching structure of the external spline and the internal spline is firm and reliable, and the use is stable and reliable.

[0014] In an alternative embodiment, a limiting step is provided on the output shaft, and the first side of the planet carrier is in clearance fit with the limiting step; the output unit assembly further includes a locking member, the locking member is fixedly connected to the output shaft, the locking member abuts against the second side of the planet carrier, and the first side and the second side are oppositely arranged in the axial direction of the positioning through hole.

[0015] Based on the above solution, after the planet carrier is fitted with the output shaft, circumferential positioning of the planet carrier and the output shaft can be achieved through the external spline and the internal spline, that is, the planet carrier is fixed relative to the output shaft in the circumferential direction of the output shaft. And through the cooperation of the limiting step and the locking member, the degree of freedom of the planet carrier in the axial direction of the output shaft can be restricted, and the cooperation between the planet carrier and the output shaft is firm and reliable; moreover, during the process of tightening the locking member, the tapered roller bearing can be axially compressed, and the axial clearance is adjusted to zero.

[0016] In an alternative embodiment, the output end assembly of the slewing reducer further includes a skeleton oil seal, and the skeleton oil seal is provided between the output shaft and the housing.

[0017] Based on the above solution, the skeleton oil seal can prevent the leakage of lubricating oil.

[0018] In an alternative embodiment, the skeleton oil seal includes a support, a first sealing lip and a second sealing lip. The support is clamped on the inner wall of the assembly hole. The first sealing lip and the second sealing lip are both fixed on the support. The first sealing lip and the second sealing lip both contact the outer peripheral surface of the output shaft. The first sealing lip and the second sealing lip are arranged at intervals in the axial direction of the output shaft.

[0019] Based on the above solution, by integrating two sealing lips on one support, the structure is simplified, components are saved. Compared with the prior art where two skeleton oil seals are arranged in the axial direction of the output shaft, the space occupied by the skeleton oil seal in the axial direction of the output shaft is reduced, the circumferential dimension of the product is reduced, and the cost is further reduced.

[0020] In an alternative embodiment, the skeleton oil seal further includes an elastic ring. The elastic ring is sleeved outside the first sealing lip and is used to make the first sealing lip tend to move closer to the output shaft. The second sealing lip is arranged in an arc structure. The second sealing lip is located on the side of the first sealing lip close to the planet carrier. The convex surface of the second sealing lip fits on the output shaft, and the concave surface of the second sealing lip faces the planet carrier.

[0021] Based on the above solution, the first sealing lip can effectively seal the lubricating oil in the gearbox and prevent oil leakage. The second sealing lip is in an arc structure. When the output shaft rotates, the second sealing lip can effectively remove the particulate matter and solid pollutants that may accumulate on the output shaft. On the one hand, it has the function of sealing the lubricating oil, and on the other hand, it protects the first sealing lip, reduces the intrusion of impurities such as particulate matter into the position where the first sealing lip is located, reduces the wear of the first sealing lip, thereby prolonging the service life of the skeleton oil seal and improving the reliability of the product.

[0022] In an alternative embodiment, an annular positioning step is provided on the inner wall of the assembly hole. One side surface of the support fits on the annular positioning step. The annular positioning step is used to limit the support from moving away from the planet carrier.

[0023] Based on the above solution, by using the annular positioning step to limit the position of the support, the position of the support is firm and reliable, it is not easy to shift during use, and the situation of sealing failure is not likely to occur, so it is safe and reliable to use.

[0024] In an alternative embodiment, the output end assembly of the slewing reducer further includes a metal sealing ring. The metal sealing ring is sleeved outside the output shaft and is fixedly connected to the output shaft. The edge of the metal sealing ring cooperates with the end face of the housing away from the planet carrier to seal the lubricating grease.

[0025] Based on the above solution, the edge of the metal sealing ring cooperates with the end face of the housing to form a sealing band, which can prevent the lubricating grease from leaking from the port of the housing.

[0026] In an alternative embodiment, an annular sealing groove is provided on the end face of the housing away from the planet carrier, and the metal sealing ring is provided with an annular sealing flange, and the annular sealing flange is embedded in the annular sealing groove.

[0027] Based on the above solution, the annular sealing flange cooperates with the bottom wall of the annular sealing groove, and can also play a sealing role.

[0028] The beneficial effects of the embodiments of the present utility model are:

[0029] In summary, for the output end assembly of the slewing reducer provided in this embodiment, an inner raceway is provided on the housing, an outer raceway is provided on the output part, the rolling elements are simultaneously embedded in the inner raceway and the outer raceway, and the rolling elements are limited by the inner raceway and the outer raceway, eliminating the outer ring and the inner ring, reducing the number of components, reducing the processing and manufacturing cost, reducing the assembly difficulty, and improving the assembly efficiency. At the same time, since the related structures for positioning the outer ring and the inner ring on the housing and the output shaft are eliminated, the structures of the housing and the output shaft are simpler, the processing and manufacturing of the housing and the output shaft are simple, and the cost is low. During the operation of the reducer, defects such as poor support stability caused by axial displacement of the bearing are not likely to occur, improving the stability and reliability of the reducer operation. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 Schematic diagram of the output end assembly of the slewing reducer according to the embodiment of the present utility model;

[0032] Figure 2 For Figure 1 Partial enlarged view at A in

[0033] Figure 3 For Figure 1 Partial enlarged view at B in

[0034] Figure 4 Deformation schematic diagram of the output end assembly of the slewing reducer according to the embodiment of the present utility model.

[0035] Icon:

[0036] 100 - housing; 101 - assembly hole; 102 - first end face; 103 - second end face; 104 - first inner raceway; 105 - annular positioning step; 106 - second inner raceway; 107 - annular sealing groove; 110 - internal teeth; 200 - output sub - assembly; 210 - output shaft; 211 - first shaft end; 212 - second shaft end; 213 - first outer raceway; 214 - limit step; 215 - external spline; 220 - planet carrier; 221 - internal spline; 222 - second outer raceway; 230 - locking part; 300 - first support assembly; 400 - second support assembly; 500 - skeleton oil seal; 510 - support; 520 - first sealing lip; 530 - second sealing lip; 540 - elastic ring; 600 - metal sealing ring; 610 - annular sealing flange; 620 - concave - convex part. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0041] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] In the prior art, the output structure of a slewing speed reducer generally includes an output gear shaft, a housing, a planet carrier 220, and two tapered bearings. One of the two tapered bearings is supported between the output gear shaft and the housing, and the other of the two tapered bearings is supported between the planet carrier 220 and the housing. During assembly, the inner and outer rings of each tapered bearing need to be positioned, resulting in cumbersome assembly, low efficiency, and high cost.

[0044] In view of this, the designer provides an output end assembly of a slewing reducer, which can simplify the structure, reduce the number of components, lower the assembly difficulty, improve the assembly efficiency, and reduce the cost.

[0045] Please refer to Figure 1 , in this embodiment, the output end assembly of the slewing reducer includes a housing 100, an output subassembly 200, and a support assembly. The housing 100 is provided with an assembly hole 101, and an inner raceway is provided on the hole wall of the assembly hole 101. The output subassembly 200 is inserted into the assembly hole 101, and the output subassembly 200 has an outer raceway; the support assembly includes a cage and a plurality of rolling elements positioned by the cage, and the plurality of rolling elements are all embedded in the inner raceway and the outer raceway.

[0046] As described above, for the output end assembly of the slewing reducer provided in this embodiment, an inner raceway is provided on the housing 100, and an outer raceway is provided on the output subassembly 200. The inner raceway and the outer raceway cooperate with each other, and the rolling elements are simultaneously embedded in the mutually cooperating inner raceway and outer raceway. The rolling elements are limited by the inner raceway and the outer raceway. Compared with the conical bearings in the prior art, the outer ring and the inner ring are omitted, the number of parts is reduced, the processing and manufacturing cost is reduced, the assembly difficulty is reduced, and the assembly efficiency is improved. At the same time, since the related structures for positioning the outer ring and the inner ring on the housing 100 and the output shaft 210 are omitted, the structures of the housing 100 and the output shaft 210 are simpler, and the processing and manufacturing of the housing 100 and the output shaft 210 are simple and the cost is low. During the operation of the reducer, defects such as poor support stability caused by axial displacement of the bearing are not likely to occur, and the stability and reliability of the reducer operation are improved.

[0047] The following embodiments will illustrate the details of the output end assembly of the slewing reducer of the present application by way of examples.

[0048] Please refer to Figure 1 , in this embodiment, optionally, the output end assembly of the slewing reducer includes a housing 100, an output subassembly 200, a first support assembly 300, a second support assembly 400, a skeleton oil seal 500 and a metal seal ring 600. The housing 100 is provided with an assembly hole 101. The housing 100 has a first end face 102 and a second end face 103 that are opposite to each other in the axial direction of the assembly hole 101. The output subassembly 200 is inserted through the assembly hole 101. Both support assemblies are installed between the housing 100 and the output subassembly 200. The skeleton oil seal 500 is installed between the two support assemblies for sealing lubricating oil. The metal seal ring 600 is installed on the output shaft 210 and cooperates with the first end face 102 for sealing lubricating grease.

[0049] Optionally, on the inner wall of the assembly hole 101, a first inner raceway 104, an annular positioning step 105 and a second inner raceway 106 are arranged in sequence in its axial direction. The first inner raceway 104 is arranged close to the first end face 102, and the second inner raceway 106 is arranged close to the second end face 103. The first inner raceway 104, the annular positioning step 105 and the second inner raceway 106 are all annular structures. Moreover, the inner wall has two tapered surfaces arranged at intervals, and the first inner raceway 104 and the second inner raceway 106 are respectively arranged on the two tapered surfaces.

[0050] Furthermore, an annular seal groove 107 is provided on the first end face 102. The annular seal groove 107 extends around the axis of the assembly hole 101, and the annular seal groove 107 and the assembly hole 101 can be coaxially arranged.

[0051] Furthermore, internal teeth 110 are provided on the hole wall of the assembly hole 101 to form a gear ring capable of meshing with the planetary gear. The internal teeth 110 are arranged close to the second end face 103 of the assembly hole 101. The gear ring and the housing 100 are integrally designed, with high overall structural strength and long service life. Moreover, the step of assembling the gear ring and the housing 100 together is omitted, simplifying the structure and improving the assembly efficiency.

[0052] In this embodiment, optionally, the output unit assembly 200 includes an output shaft 210, a planet carrier 220, and a locking member 230. The planet carrier 220 is sleeved outside the output shaft 210, and the locking member 230 is connected to the output shaft 210. The locking member 230 is used to restrict the planet carrier 220 from disengaging from the output shaft 210.

[0053] Optionally, the output shaft 210 is configured as a stepped shaft. The output shaft 210 has a first shaft end 211 and a second shaft end 212 arranged oppositely in its axial direction. The output shaft 210 is inserted into the assembly hole 101. The first shaft end 211 and the first end face 102 are on the same side, and the second shaft end 212 and the second end face 103 are on the same side. On the outer peripheral surface of the output shaft 210, a first outer raceway 213, a limiting step 214, and an external spline 215 are sequentially arranged in its axial direction. The first outer raceway 213 is arranged on a conical surface. The first outer raceway 213 cooperates with the first inner raceway 104, and the two can position the first support assembly 300. The first outer raceway 213 is arranged close to the first shaft end 211. Correspondingly, the external spline 215 is arranged close to the second shaft end 212. At the same time, an external thread is provided on the outer peripheral surface of the output shaft 210 near the second shaft end 212, and one end of the external thread extends to the end face where the second shaft end 212 is located.

[0054] Optionally, the planet carrier 220 is provided with a positioning through hole. Internal splines 221 are provided on the hole wall of the positioning through hole. The planet carrier 220 is sleeved outside the output shaft 210 from the second shaft end 212 by using its positioning through hole, and the internal splines 221 mesh with the external splines 215, so that the planet carrier 220 and the output shaft 210 are relatively fixed in the circumferential direction of the output shaft 210. The two are firmly combined and can rotate synchronously. Moreover, after the planet carrier 220 is sleeved on the output shaft 210, a clearance fit is provided between the first side of the planet carrier 220 and the limiting step 214, and the locking member 230 abuts against the second side of the planet carrier 220. In this way, the locking member 230 and the limiting step 214 cooperate to restrict the freedom degree of the planet carrier 220 in the axial direction of the output shaft 210. It should be understood that the first side and the second side are arranged oppositely in the axial direction of the positioning through hole. The first side is close to the first shaft end 211, and the second side is close to the second shaft end 212.

[0055] Further, a conical surface is provided on the outer peripheral surface of the planet carrier 220, and a second outer raceway 222 is provided on the conical surface. The second outer raceway 222 cooperates with the second inner raceway 106 on the housing 100, and the two can position the second support assembly 400.

[0056] Optionally, the fastener is set as a nut, and the fastener is screwed onto the output shaft 210 from the second shaft end 212, which is convenient to operate.

[0057] Please refer to Figure 1 and Figure 2 In this embodiment, optionally, the skeleton oil seal 500 includes a support 510, a first sealing lip 520 and a second sealing lip 530. The support 510 is clamped on the hole wall of the assembly hole 101. Specifically, the support 510 is clamped on the annular positioning step 105, and the annular positioning step 105 can limit the support 510 from approaching the first shaft end 211. Both the first sealing lip 520 and the second sealing lip 530 are fixed on the support 510. Both the first sealing lip 520 and the second sealing lip 530 are in contact with the outer peripheral surface of the output shaft 210. The first sealing lip 520 and the second sealing lip 530 are arranged at intervals in the axial direction of the output shaft 210. By integrating two sealing lips on one support 510, the structure is simplified, parts are saved. Compared with arranging two skeleton oil seals 500 in the axial direction of the output shaft 210 in the prior art, the space occupied by the skeleton oil seal 500 in the axial direction of the output shaft 210 is reduced, the circumferential dimension of the product is reduced, and the cost is further reduced.

[0058] Further, the skeleton oil seal 500 further includes an elastic ring 540. The elastic ring 540 is sleeved outside the first sealing lip 520 and is used to make the first sealing lip 520 tend to move closer to the output shaft 210. The second sealing lip 530 is arranged as an arc structure. The second sealing lip 530 is located on the side of the first sealing lip 520 close to the planet carrier 220. The convex surface of the second sealing lip 530 is attached to the output shaft 210, and the concave surface of the second sealing lip 530 faces the planet carrier 220. The first sealing lip 520 can effectively seal the lubricating oil in the gearbox to avoid oil leakage; the second sealing lip 530 is an arc structure. When the output shaft 210 rotates, the second sealing lip 530 can effectively remove the particulate matter and solid contaminants that may accumulate on the output shaft 210. On the one hand, it has the function of sealing the lubricating oil, and on the other hand, it protects the first sealing lip 520, reduces the intrusion of impurities such as particulate matter into the position where the first sealing lip 520 is located, and reduces the wear of the first sealing lip 520, thereby prolonging the service life of the skeleton oil seal 500 and improving the reliability of the product.

[0059] Please refer to Figure 1 and Figure 3, in this embodiment, optionally, an annular sealing flange 610 may be provided on the outer peripheral edge of the metal sealing ring 600. The metal sealing ring 600 is sleeved outside the output shaft 210. The metal sealing ring 600 may be in interference fit with the output shaft 210. The annular sealing flange 610 is clamped in the annular sealing groove 107 on the first end face 102. The annular sealing flange 610 cooperates with the bottom wall of the annular sealing groove 107 to play a sealing role.

[0060] It should be understood that in other embodiments, the annular sealing groove 107 may not be provided on the first end face 102, and the annular sealing flange 610 may directly cooperate with the first end face 102, which can also play a role in preventing the leakage of grease.

[0061] Please combine with Figure 4 , in addition, the metal sealing ring 600 may be provided with concave-convex portions 620 that can increase the structural strength. The concave-convex portions 620 may be of an annular structure.

[0062] In this embodiment, it should be noted that the structures of the first support assembly 300 and the second support assembly 400 may be set to be the same, and multiple rollers can be positioned by a cage. Details are not described in this embodiment.

[0063] In addition, the rollers may be set as steel balls.

[0064] The output end assembly of the slewing reducer provided in this embodiment integrates the ring gear, the outer ring of the bearing with the housing 100, and integrates the inner ring of the bearing with the output shaft 210 or the planet carrier 220, eliminating multiple components, simplifying the assembly process, reducing the assembly difficulty, improving the assembly efficiency, and the cost of the slewing reducer is low.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary reducer output end assembly, characterized in that: include: A shell (100), an output assembly (200) and a support assembly, wherein the shell (100) is provided with an assembly hole (101), an inner raceway is provided on the hole wall of the assembly hole (101), and the output assembly (200) is inserted into the assembly hole (101); the output assembly (200) comprises a connected output shaft (210) and a planet carrier (220), at least one of the output shaft (210) and the planet carrier (220) is provided with an outer raceway, and the support assembly comprises a retaining frame and a plurality of rollers positioned by the retaining frame, and the plurality of rollers are embedded in the inner raceway and the outer raceway.

2. The rotary reducer output end assembly according to claim 1, characterized in that: The number of the inner raceways is two and they are arranged at intervals in the axial direction of the assembly hole (101); The output shaft (210) and the planet carrier (220) are respectively provided with an outer raceway, and the outer raceway on the output shaft (210) and the outer raceway on the planet carrier (220) respectively correspond to the two inner raceways on the outer shell (100).

3. The rotary reducer output end assembly according to claim 2, characterized in that: An external spline (215) is arranged on the outer circumferential surface of the output shaft (210), a positioning through hole is arranged on the planet carrier (220), an internal spline (221) is arranged on the hole wall of the positioning through hole, the output shaft (210) is inserted into the positioning through hole, and the external spline (215) is meshed with the internal spline (221).

4. The rotary reducer output end assembly according to claim 3, characterized in that: A limiting step (214) is provided on the output shaft (210), and a first side of the planet carrier (220) is clearance-matched with the limiting step (214); the output component (200) further comprises a locking member (230), the locking member (230) is fixedly connected to the output shaft (210), the locking member (230) abuts against a second side of the planet carrier (220), and the first side and the second side are arranged opposite to each other in the axial direction of the positioning through hole.

5. The rotary reducer output end assembly according to claim 2, characterized in that: The rotary reducer output end assembly further comprises a skeleton oil seal (500), wherein the skeleton oil seal (500) is arranged between the output shaft (210) and the housing (100).

6. The rotary reducer output end assembly according to claim 5, characterized in that: The skeleton oil seal (500) comprises a support (510), a first sealing lip (520) and a second sealing lip (530); the support (510) is clamped on the hole wall of the assembly hole (101); the first sealing lip (520) and the second sealing lip (530) are both fixed on the support (510); the first sealing lip (520) and the second sealing lip (530) are both in contact with the outer peripheral surface of the output shaft (210); the first sealing lip (520) and the second sealing lip (530) are arranged at intervals in the axial direction of the output shaft (210).

7. The rotary reducer output end assembly according to claim 6, characterized in that: The skeleton oil seal (500) further comprises an elastic ring (540), wherein the elastic ring (540) is sleeved on the outside of the first sealing lip (520) and is used to make the first sealing lip (520) have a tendency to move close to the output shaft (210); the second sealing lip (530) is arranged as an arc-shaped structure, the second sealing lip (530) is located on a side of the first sealing lip (520) close to the planet carrier (220), the outer convex surface of the second sealing lip (530) is in contact with the output shaft (210), and the inner concave surface of the second sealing lip (530) faces the planet carrier (220).

8. The rotary reducer output end assembly according to claim 6, characterized in that: An annular positioning step (105) is provided on the hole wall of the assembly hole (101), a side surface of the support (510) is in contact with the annular positioning step (105), and the annular positioning step (105) is used to limit the support (510) from being away from the planet carrier (220).

9. The rotary reducer output end assembly according to claim 2, characterized in that: The rotary reducer output end assembly further comprises a metal sealing ring (600), which is sleeved on the outside of the output shaft (210) and fixedly connected to the output shaft (210); an edge of the metal sealing ring (600) cooperates with an end face of the housing away from the planet carrier (220) to seal lubricating grease.

10. The rotary reducer output end assembly according to claim 9, characterized in that: An annular sealing groove (107) is provided on the end surface of the housing away from the planet carrier (220), and the metal sealing ring (600) is provided with an annular sealing fold (610), and the annular sealing fold (610) is embedded in the annular sealing groove (107).

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