Planet wheel gasket of single-piece type planet carrier

Abstract

The utility model discloses a planet wheel gasket of a single-piece type planet carrier, and relates to the technical field of planetary speed reducers. The planet carrier comprises a planet carrier body, a plurality of upright posts are vertically fixed on one surface of the planet carrier body; first R angles are arranged on the outer edges of the ends, close to the planet carrier body, of the stand columns; the planet wheel gasket comprises a gasket body; a second R angle corresponding to the first R angle is arranged at one port, close to one surface of the planet carrier body, of the inner hole of the gasket body; the radius of the second R angle is larger than that of the first R angle. The single-sheet type planet carrier stand column R angle bearing is reasonable in structural design and low in manufacturing cost, can avoid the problem of installation interference between the single-sheet type planet carrier stand column R angle and the bearing, and has high market application value.

Description

Technical Field

[0001] The utility model belongs to the technical field of planetary reducers, in particular to a planetary wheel washer of a single-piece planetary frame. Background Art

[0002] In recent years, the trend of planetary mechanisms being lightweight has led to the planetary carrier evolving from a two-piece structure to a single-piece (cantilever beam) structure, that is, the pin that fixes the planetary gear has evolved into a column and a planetary carrier that are combined into one. Under high loads, the connection between the column and the planetary carrier requires a large R angle to relieve stress concentration. However, the large R angle at the planetary carrier column will cause assembly interference problems such as needle roller bearings and gears during assembly.

[0003] The Chinese patent with the authorization announcement number CN218818087U discloses a planetary wheel washer structure in a planetary reducer, which prevents the relative rotation of the washer and the planetary carrier by adding an anti-rotation ear to the washer and processing a notch at the corresponding position of the planetary carrier so that the anti-rotation ear is stuck in the notch of the planetary carrier, thereby avoiding the cutting effect. However, this structure is applicable to double-piece planetary carriers and cannot solve the interference problem between the R angle of the column of the single-piece planetary carrier and the bearing. The Chinese patent with the authorization announcement number CN210068696U discloses a new type of gear washer, which is provided with arc and annular grooves on the front and back of the washer respectively, and is provided with oil holes running through the upper and lower surfaces, and the oil guide hole connects the arc grooves on the upper and lower surfaces. This structure allows the lubricating oil to smoothly enter the upper and lower surfaces of the washer, thereby improving the lubrication performance of the contact surface between the gear and the planetary carrier. However, this solution still cannot solve the interference problem between the R angle of the column of the single-piece planetary carrier and the bearing. At the same time, the Chinese patent with authorization announcement number CN204805490U and the Chinese patent with authorization announcement number CN203516404U both optimize the lubrication performance of the contact surface between the gear and the planetary carrier by designing different oil grooves, but still cannot solve the interference problem between the R angle of the single-piece planetary carrier column and the bearing. In summary: the above-mentioned prior art patents optimize the lubrication performance of the contact surface between the gear and the planetary carrier by designing different oil grooves, but still cannot solve the interference problem between the R angle of the single-piece planetary carrier column and the bearing. Therefore, it is urgent to study a planetary wheel washer for a single-piece planetary carrier in order to solve the above problems. Utility Model Content

[0004] The utility model provides a planetary wheel washer of a single-piece planetary carrier, and its purpose is to solve the technical problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model discloses a planetary wheel washer of a monolithic planetary carrier, wherein the monolithic planetary carrier comprises a planetary carrier body; a plurality of columns are vertically fixed on a surface of the planetary carrier body; a first R angle is arranged on an outer edge of an end of each of the columns close to the planetary carrier body; the planetary wheel washer comprises a washer body; a second R angle corresponding to the first R angle is arranged on a port of an inner hole of the washer body close to a surface of the planetary carrier body; and the radius of the second R angle is greater than the radius of the first R angle.

[0007] As a preferred technical solution of the present invention, there is the following relationship between the radius R1 of the first R angle and the radius R2 of the second R angle: R2=R1+1mm.

[0008] As a preferred technical solution of the utility model, the inner hole diameter of the gasket body is larger than the diameter of the column; there is the following relationship between the diameter D1 of the column and the inner hole diameter D2 of the gasket body: D2=D1+a, where a is a coefficient.

[0009] As a preferred technical solution of the present invention, the thickness of the gasket body is greater than the radius of the first R angle; there is the following relationship between the thickness H of the gasket body and the radius R2 of the second R angle: H≥R2+a+1mm.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model not only has reasonable structural design and low manufacturing cost, but also effectively avoids the installation interference problem between the single-piece planetary frame column r angle and the bearing.

[0012] 2. The utility model can avoid interference between the inner diameter of the washer body and the first R angle of the column while ensuring the strength of the washer body itself by determining the relationship between the second R angle of the washer body and the first R angle of the column and the relationship between the thickness of the washer body and the first R angle of the column.

[0013] 3. The utility model determines the relationship between the inner hole diameter of the gasket body and the diameter of the column, thereby avoiding excessive shaking between the gasket body and the column and ensuring full fit between the bearing end face and the gasket.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 The utility model is a schematic structural diagram of a planetary wheel washer of a single-piece planetary carrier.

[0017] Figure 2 It is a schematic diagram of the structure in which the second R angle of the utility model is arranged on the gasket body.

[0018] Figure 3 It is a structural schematic diagram of the washer body of the utility model being arranged on the planet carrier body.

[0019] Figure 4 It is a structural schematic diagram of a planet carrier body in the prior art.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1-planet carrier body, 2-washer body, 3-planet gear, 4-bearing, 101-column, 102-first R angle, 201-second R angle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4As shown, the utility model is a planetary wheel washer of a monolithic planetary carrier, the monolithic planetary carrier comprises a planetary carrier body 1; a plurality of columns 101 are vertically fixed on one surface of the planetary carrier body 1; a first R angle 102 is provided on the outer edge of one end of each column 101 close to the planetary carrier body 1; the planetary wheel washer comprises a washer body 2; the selected material of the washer body 2 can adopt conventional SPCC surface salt bath treatment or polymer resin in the field, and its processing technology can be selected according to the selected material, such as cold pressing, machining, injection molding, etc.; the inner hole of the washer body 2 is close to a port on a surface of the planetary carrier body 1 and is provided with a second R angle 201 corresponding to the first R angle 102; the radius of the second R angle 201 is greater than the radius of the first R angle 102; there is the following relationship between the radius R1mm of the first R angle 102 and the radius R2mm of the second R angle 201: R2=R1+1mm. When in use, if Figure 3 As shown, by sleeve-mounting the washer body 2 on the column 101, and making the first R angle 102 and the second R angle 201 correspond in position, and then assembling the bearing 4 on the outer periphery of the column 101, and then assembling the planetary gear 3 on the outer periphery of the bearing 4, not only the structural design is reasonable and the manufacturing cost is low, but also the installation interference problem between the single-piece planetary carrier column R angle and the bearing is effectively avoided.

[0024] The inner hole diameter of the washer body 2 is larger than the diameter of the column 101; the diameter D1mm of the column 101 and the inner hole diameter D2mm of the washer body 2 have the following relationship: D2=D1+a, where a is a coefficient, and the selection of coefficient a is detailed in the following table:

[0025] <![CDATA[Column diameter D1]]> Coefficient a ≤1 0.2 ＞1～3 0.28 ＞3～10 0.4 ＞10～30 0.56 ＞30～120 0.78 ＞120～315 1.1 ＞315～1000 1.5

[0026] By determining the relationship between the inner hole diameter of the washer body and the diameter of the column, excessive shaking between the washer body and the column is avoided, and sufficient fit between the bearing end face and the washer is ensured.

[0027] In addition, the thickness of the gasket body 2 is greater than the radius of the first R angle 102; the thickness Hmm of the gasket body 2 and the radius R2mm of the second R angle 201 have the following relationship: H≥R2+a+1mm. By determining the relationship between the second R angle of the gasket body and the first R angle of the column and the relationship between the thickness of the gasket body and the first R angle of the column, the interference between the inner diameter of the gasket body and the first R angle of the column can be avoided while ensuring the strength of the gasket body itself.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A planet wheel washer of a monolithic planet carrier, the monolithic planet carrier comprising a planet carrier body (1); a plurality of columns (101) are vertically fixed to a surface of the planet carrier body (1); each of the columns (101) is provided with a first R angle (102) at an outer edge of one end close to the planet carrier body (1); the characteristics are: The planetary wheel washer comprises a washer body (2); a second R angle (201) corresponding to the first R angle (102) is arranged at a port of an inner hole of the washer body (2) close to a surface of a planet carrier body (1); and the radius of the second R angle (201) is greater than the radius of the first R angle (102).

2. The planetary wheel washer of a single-piece planetary carrier according to claim 1, characterized in that: There is the following relationship between the radius R1 of the first R angle (102) and the radius R2 of the second R angle (201): R2=R1+1 mm.

3. A planetary wheel washer for a single-piece planetary carrier according to claim 1 or 2, characterized in that: The inner hole diameter of the washer body (2) is greater than the diameter of the column (101).

4. The planetary wheel washer of a single-piece planetary carrier according to claim 3, characterized in that: There is the following relationship between the diameter D1 of the column (101) and the inner hole diameter D2 of the gasket body (2): D2=D1+a, where a is a coefficient.

5. The planetary wheel washer of a single-piece planetary carrier according to claim 4, characterized in that: The thickness of the gasket body (2) is greater than the radius of the first R angle (102).

6. The planetary wheel washer of a single-piece planetary carrier according to claim 5, characterized in that: There is the following relationship between the thickness H of the gasket body (2) and the radius R2 of the second R angle (201): H≥R2+a+1mm.

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