Planetary transmission mechanism and power equipment

Abstract

The utility model discloses a planetary transmission mechanism and power equipment, and belongs to the technical field of planetary transmission mechanisms, the planetary transmission mechanism comprises a planet carrier and a plurality of planet wheels, the planet carrier comprises a body and a plurality of protruding parts, the protruding parts are connected to one side of the body, and each protruding part is of a hollow structure. And one planet wheel is correspondingly arranged on the periphery of one convex part in a sleeving manner and is rotationally connected with the convex part. The planetary transmission mechanism is simple in structure, mounting errors are offset through deformation generated by the protruding parts, uniform load distribution of the planetary wheels is achieved, failure of the planetary wheels is avoided, and safety and stability of the planetary transmission mechanism are improved. In addition, circulation of lubricating oil is achieved through the hollow structures of the protruding parts, and the lubricating effect of the planetary transmission mechanism is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of planetary transmission mechanisms, and specifically relates to a planetary transmission mechanism and a power device. Background Art

[0002] Planetary transmissions are widely used in industries such as ships, wind power, and engineering machinery due to their small size, large speed ratio, and high load-bearing capacity. In a planetary gear system, power transmission can be achieved in a relatively small volume due to the power distribution and confluence between the sun gear, multiple planetary gears, and the inner gear ring. However, due to manufacturing and installation errors, the load distribution between multiple planetary gears is uneven, which can easily lead to the failure of a single planetary gear. Utility Model Content

[0003] Purpose of the utility model: The embodiments of the present application provide a planetary transmission mechanism and a power device, aiming to solve the technical problem of failure of the planetary gear due to excessive load caused by installation errors.

[0004] Technical solution: A planetary transmission mechanism according to an embodiment of the present application includes:

[0005] The planet carrier comprises a main body and a plurality of protrusions, wherein the plurality of protrusions are connected to one side of the main body, and the protrusions are hollow structures;

[0006] A plurality of planetary gears are provided, one of the planetary gears is sleeved on the outer periphery of a protruding portion and is rotatably connected with the protruding portion.

[0007] In some embodiments, the protrusion is provided with a through hole, and the through hole is extended along the first direction.

[0008] In some embodiments, there are multiple through holes, and the multiple through holes are arranged at intervals on the protrusion.

[0009] In some embodiments, the plurality of through holes include a first through hole and a plurality of second through holes, the first through hole is arranged to penetrate along the central axis of the protruding portion, and the plurality of second through holes are arranged around the first through hole.

[0010] In some embodiments, the body is provided with a mounting hole, the mounting hole is extended along the first direction, and the mounting hole is communicated with the through hole.

[0011] In some embodiments, a size of the mounting hole in the second direction is greater than or equal to a size of the through hole in the second direction, and the first direction intersects the second direction.

[0012] In some embodiments, a plurality of bearings are included, one bearing is sleeved on the outer periphery of one protrusion, and the bearing is sandwiched between the protrusion and the planetary gear.

[0013] In some embodiments, the planetary transmission mechanism includes an elastic member, the protrusion has a groove, the elastic member is clamped in the groove, and the elastic member is connected to the bearing.

[0014] In some embodiments, the elastic member is a retaining ring.

[0015] In some embodiments, there are multiple elastic members, and the bearing is sandwiched between at least two elastic members.

[0016] In some embodiments, the body and the plurality of protrusions are an integral structure.

[0017] Correspondingly, a power device according to an embodiment of the present application includes the above-mentioned planetary transmission mechanism.

[0018] Beneficial effects: The present application provides a planetary transmission mechanism, including a planetary carrier and a plurality of planetary wheels, wherein the planetary carrier includes a main body and a plurality of protrusions, wherein the plurality of protrusions are connected to one side of the main body, and the protrusions are hollow structures. A planetary wheel is correspondingly sleeved on the outer periphery of a protrusion and is rotatably connected to the protrusion. The planetary wheel is connected to the planetary carrier through the protrusion. The planetary transmission mechanism of the present application has a simple structure, and the deformation generated by the protrusion is used to offset the installation error, thereby achieving uniform load distribution of the planetary wheel, avoiding failure of the planetary wheel, and improving the safety and stability of the planetary transmission mechanism. In addition, the hollow structure of the protrusion realizes the circulation of lubricating oil, thereby improving the lubrication effect of the planetary transmission mechanism.

[0019] The power equipment of the embodiment of the present application includes the above-mentioned planetary transmission mechanism, so the power equipment can have all the technical features and beneficial effects of the above-mentioned planetary transmission mechanism, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a structural schematic diagram of a planetary transmission mechanism according to an embodiment of the present application;

[0022] Figure 2 is a cross-sectional view of a planetary transmission mechanism according to an embodiment of the present application;

[0023] Figure 3 It is an exploded view of a planetary transmission mechanism according to an embodiment of the present application.

[0024] Figure numerals: 1, planet carrier; 2, planet gear; 3, bearing; 4, sun gear; 5, elastic member; 10, body; 11, raised portion; 20, groove; 100, mounting hole; 110, through hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0027] Planetary transmissions are widely used in industries such as ships, wind power, and engineering machinery due to their small size, large speed ratio, and high load-bearing capacity. In a planetary gear system, power transmission can be achieved in a relatively small volume due to the power distribution and confluence between the sun gear, multiple planetary gears, and the inner gear ring. However, due to manufacturing and installation errors, the load distribution between multiple planetary gears is uneven, which can easily lead to the failure of a single planetary gear.

[0028] In view of this, the present application provides a planetary transmission mechanism, including a planetary carrier and a plurality of planetary wheels, the planetary carrier includes a main body and a plurality of protrusions, the plurality of protrusions are connected to one side of the main body, and the protrusions are hollow structures. A planetary wheel is correspondingly sleeved on the outer periphery of a protrusion and is rotatably connected to the protrusion. The planetary wheel is connected to the planetary carrier through the protrusion. The planetary transmission mechanism of the present application has a simple structure, and the deformation generated by the protrusion is used to offset the installation error, so that the load distribution of the planetary wheel is uniform, the failure of the planetary wheel is avoided, and the safety and stability of the planetary transmission mechanism are improved. In addition, the hollow structure of the protrusion realizes the circulation of lubricating oil, thereby improving the lubrication effect of the planetary transmission mechanism.

[0029] The planetary transmission mechanism and the power equipment of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0030] The present application provides a planetary transmission mechanism, including a planetary carrier 1 and a plurality of planetary wheels 2. The planetary carrier 1 includes a main body 10 and a plurality of protrusions 11. The plurality of protrusions 11 are connected to one side of the main body 10, and the protrusions 11 are hollow structures. One planetary wheel 2 is correspondingly sleeved on the outer periphery of a protrusion 11 and is rotatably connected to the protrusion 11. The planetary wheel 2 is connected to the planetary carrier 1 through the protrusion 11. The planetary transmission mechanism of the present application has a simple structure. Through the hollow structure of the protrusion 11, deformation is generated to offset the installation error, thereby achieving uniform load distribution of the planetary wheel 2, avoiding failure of the planetary wheel 2, and improving the safety and stability of the planetary transmission mechanism. In addition, the hollow structure of the protrusion 11 realizes the circulation of lubricating oil, thereby improving the lubrication effect of the planetary transmission mechanism.

[0031] In some embodiments, the protrusion 11 is provided with a through hole 110, and the through hole 110 is extended along the first direction X. In the embodiment of the present application, the protrusion 11 has the through hole 110, and by controlling the size of the through hole 110, the rigidity of the protrusion 11 can be reduced by increasing the size of the through hole 110 while meeting the strength. When the planetary gear 2 is subjected to a load, a large deformation can be generated to offset the manufacturing and installation error, and the load between each planetary gear 2 is evenly distributed, thereby improving the stability and life of the planetary transmission mechanism.

[0032] In some embodiments, there are multiple through holes 110, and the multiple through holes 110 are arranged at intervals on the protrusion 11. In this way, the deformation of the protrusion 11 can be dispersed to the multiple through holes 110, thereby preventing the excessive deformation of the protrusion 11 from being concentrated at a specific position, thereby achieving more uniform load balancing and deformation distribution.

[0033] In some embodiments, the plurality of through holes 110 include a first through hole 110 and a plurality of second through holes 110, the first through hole 110 is arranged along the central axis of the protrusion 11, and the plurality of second through holes 110 are arranged around the first through hole 110. Through the through arrangement of the first through hole 110, the deformation and load distribution of the protrusion 11 on the central axis can be achieved. The surrounding arrangement of the plurality of second through holes 110 can further adjust the load distribution so that the deformation and load of the protrusion 11 are evenly distributed along the circumferential direction. Such an arrangement helps to achieve balanced load distribution of the planetary gear 2 and improve the stability and life of the transmission device. In addition, the arrangement of the plurality of through holes 110 can realize the circulation of lubricating oil and improve the lubrication effect in the planetary transmission mechanism.

[0034] In some embodiments, the body 10 is provided with a mounting hole 100, the mounting hole 100 is extended along the first direction X, and the mounting hole 100 is connected to the through hole 110. The first direction X is arranged parallel to the central axis of the protrusion 11. The mounting hole 100 is used to hoist, suspend or fix the body 10. Such an arrangement facilitates the installation, maintenance or transportation of the planetary transmission mechanism. The mounting hole 100 is connected to the through hole 110, which facilitates the circulation of lubricating oil along the first direction X.

[0035] In some embodiments, the size of the mounting hole 100 in the second direction Y is greater than or equal to the size of the through hole 110 in the second direction Y, and the first direction X intersects the second direction Y. In the embodiment of the present application, the first direction X is perpendicular to the second direction Y, and the second direction Y is the radial direction of the body 10. By increasing the size of the lifting hole in the second direction Y, the structural strength and stability of the body 10 in the radial direction can be enhanced.

[0036] In some embodiments, the planetary transmission mechanism includes a plurality of bearings 3, one bearing 3 is sleeved on the outer periphery of one protrusion 11, and the bearing 3 is sandwiched between the protrusion 11 and the planetary gear 2. The inner ring of the bearing 3 is connected to the protrusion 11, and the outer ring of the bearing 3 is connected to the planetary gear 2. The bearing 3 is used to support the planetary gear 2 and transfer the axial load on the planetary gear 2 to the protrusion 11. The bearing 3 in the present application can be a self-aligning bearing 3.

[0037] In some embodiments, the planetary transmission mechanism includes a sun gear 4, which is meshed with a plurality of planetary gears 2. The sun gear 4 can be connected to an input shaft or an output shaft via a key to achieve power transmission.

[0038] In some embodiments, the planetary transmission mechanism includes an elastic member 5, the protrusion 11 has a groove 20, the elastic member 5 is clamped in the groove 20, and the elastic member 5 is connected to the bearing 3. In some embodiments, the elastic member is a retaining ring. In some embodiments, there are multiple elastic members 5, and the bearing 3 is sandwiched between at least two elastic members 5. In an embodiment of the present application, there are two elastic members 5, and a bearing 3 is sandwiched between the two elastic members 5. The elastic member 5 is used to provide an elastic connection between the bearing 3 and the protrusion 11, plays a role in fixing and stabilizing the axial direction of the protrusion 11, and helps to bear and disperse the load from the planetary gear 2. In addition, the elastic member 5 of the present application can improve the stability and stability of the planetary transmission mechanism by reducing shock and absorbing vibration.

[0039] In some embodiments, the body 10 and the plurality of protrusions 11 are an integrated structure. Such a configuration has a simple structure, can reduce the difficulty of assembling the planetary transmission mechanism, and can offset the installation error by generating deformation through the hollow structure of the protrusion 11, thereby achieving uniform load distribution of the planetary gear 2, avoiding failure of the planetary gear 2, and improving the safety and stability of the planetary transmission mechanism. In addition, the hollow structure of the protrusion 11 realizes the circulation of lubricating oil, thereby improving the lubrication effect of the planetary transmission mechanism.

[0040] The present application provides a power device, including the above-mentioned planetary transmission mechanism. In the embodiment of the present application, the planetary transmission mechanism can be used in a heavy-duty planetary reducer. The structure of the planetary transmission mechanism is simple, which can improve the assembly efficiency and simplify the equipment assembly process.

[0041] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0042] The planetary transmission mechanism and power equipment provided in the embodiments of the present application are introduced in detail above, and the principles and implementation methods of the present application are explained by using specific examples. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A planetary transmission mechanism, characterized in that: include: A planet carrier (1) comprises a body (10) and a plurality of protrusions (11), wherein the plurality of protrusions (11) are connected to one side of the body (10), and the protrusions (11) are hollow structures; A plurality of planetary gears (2), one of the planetary gears (2) being sleeved on the outer periphery of one of the protruding portions (11) and being rotationally connected to the protruding portion (11).

2. The planetary transmission mechanism according to claim 1, characterized in that: The protruding portion (11) is provided with a through hole (110), and the through hole (110) is extended along a first direction (X).

3. The planetary transmission mechanism according to claim 2, characterized in that: There are a plurality of through holes (110), and the plurality of through holes (110) are arranged at intervals on the raised portion (11).

4. The planetary transmission mechanism according to claim 3, characterized in that: The plurality of through holes (110) include a first through hole and a plurality of second through holes, wherein the first through hole is arranged to penetrate along the central axis of the raised portion (11), and the plurality of second through holes are arranged around the first through hole.

5. The planetary transmission mechanism according to claim 3, characterized in that: The body (10) is provided with a mounting hole (100), the mounting hole (100) is extended along the first direction (X), and the mounting hole (100) is communicated with the through hole (110).

6. The planetary transmission mechanism according to claim 5, characterized in that: The size of the mounting hole (100) in the second direction (Y) is greater than or equal to the size of the through hole (110) in the second direction (Y), and the first direction (X) intersects with the second direction (Y).

7. The planetary transmission mechanism according to claim 1, characterized in that: The planetary transmission mechanism comprises a plurality of bearings (3), one of the bearings (3) being sleeved on the outer periphery of one of the protruding portions (11), and the bearing (3) being sandwiched between the protruding portion (11) and the planetary gear (2).

8. The planetary transmission mechanism according to claim 7, characterized in that: The planetary transmission mechanism comprises an elastic member (5), the protrusion (11) has a groove (20), the elastic member (5) is clamped in the groove (20), and the elastic member (5) is connected to the bearing (3).

9. The planetary transmission mechanism according to claim 8, characterized in that: The elastic member (5) is a retaining ring; and / or There are a plurality of elastic members (5), and the bearing (3) is sandwiched between at least two of the elastic members (5).

10. The planetary transmission mechanism according to claim 1, characterized in that: The main body (10) and the plurality of protrusions (11) are an integrated structure.

11. A power device, characterized in that: It comprises a planetary transmission mechanism as claimed in any one of claims 1 to 10.

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