Multi-angle dialing mode planetary carrier forging structure

Abstract

The utility model provides a kind of multi-angle dialing model planetary carrier forge structure, it is related to planetary carrier forging technical field, including planetary carrier body, the middle part of planetary carrier body is equipped with the sun gear mounting hole of through, the top surface round axle direction of planetary carrier body is uniformly distributed with multiple planetary gear mounting seat, the center of multiple planetary gear mounting seat is equipped with planetary gear shaft mounting hole.The utility model design is reasonable, by each component using integrated forging forming structure, compared with casting and welding process, eliminate internal defect and the problem of welding stress concentration, structure overall stiffness and fatigue strength significantly improve, can use multiple high-frequency impact load working condition;By setting up lightening hole groove on the end face of planetary carrier body, the setting of lightening hole groove can further realize the lightweight of planetary carrier body, and through the design of reinforcing rib and reasonable wall thickness, ensure lightweight but do not affect the strength of structure.

Description

Technical Field

[0001] This utility model mainly relates to the field of planetary carrier forging technology, specifically to a multi-angle die planetary carrier forging structure. Background Technology

[0002] As the core load-bearing component of the planetary gear transmission system, the planetary carrier must simultaneously withstand torque, radial force, and impact loads. Its structural strength, precision, and lightweight level directly determine the reliability and transmission efficiency of the transmission system.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] Existing planetary carriers are mostly manufactured using casting or welding processes, which have the following drawbacks:

[0005] Casting processes are prone to defects such as internal porosity and air bubbles, resulting in insufficient fatigue strength of the planetary carrier and easy cracking failure under high-frequency impact loads. Welding processes require splicing multiple parts, resulting in significant stress concentration at the weld seam and difficulty in controlling welding deformation. Subsequent machining corrections are required, which not only increases production costs but also reduces the overall structural rigidity. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This utility model provides a multi-angle die planetary carrier forging structure to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a multi-angle die-casting planetary carrier forging structure, including a planetary carrier body, wherein a through sun gear mounting hole is provided in the middle of the planetary carrier body;

[0010] The planetary carrier body has multiple planetary gear mounting seats evenly distributed along the circular axis on the top surface of the planetary gear mounting seat, and each of the multiple planetary gear mounting seats has a planetary gear shaft mounting hole at its center.

[0011] Multiple weight-reducing grooves are provided on the end face of the planetary carrier body, and the weight-reducing grooves are evenly distributed along the circumferential direction of the sun gear mounting hole.

[0012] Furthermore, the planetary carrier body, sun gear mounting hole, planetary gear mounting seat, and weight reduction hole groove are integrally formed by hot forging process.

[0013] Furthermore, both ends of the planetary gear shaft mounting hole are provided with chamfered structures.

[0014] Furthermore, the inner wall of the weight-reducing hole groove is provided with a plurality of reinforcing ribs, which are arranged radially along the weight-reducing hole groove, and the height of the reinforcing ribs is consistent with the depth of the weight-reducing hole groove.

[0015] Furthermore, the inner wall of the planetary gear shaft mounting hole is provided with an annular oil groove, which is connected to the oil injection channel opened on the side wall of the planetary gear mounting seat, and the outer port of the oil injection channel is provided with a sealing threaded hole.

[0016] Furthermore, a sealing bolt is fitted inside the sealing threaded hole, and the sealing bolt is threadedly connected to the sealing threaded hole.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0019] This utility model has a reasonable design. By adopting an integrated forging structure for each component, compared with casting and welding processes, it eliminates the problems of internal defects and stress concentration in welds. The overall rigidity and fatigue strength of the structure are significantly improved, and it can be used in multiple high-frequency impact load conditions.

[0020] By opening weight-reducing holes and grooves on the end face of the planetary carrier body, the weight-reducing holes and grooves can further achieve the weight reduction of the planetary carrier body. Furthermore, through the design of reinforcing ribs and reasonable wall thickness, it is ensured that the weight reduction does not affect the strength of the structure.

[0021] By combining the annular oil groove and the oil injection channel inside the planetary gear mounting hole, long-term lubrication of the planetary gear can be achieved, reducing wear and extending the service life of the planetary carrier.

[0022] The chamfered structure design improves the installation accuracy and convenience of components and reduces assembly difficulty.

[0023] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0027] Figure 4This is a schematic diagram of the planar structure of the planetary carrier body of this utility model.

[0028] Figure label:

[0029] 1. Planetary carrier body; 2. Sun gear mounting hole; 3. Planetary gear mounting seat; 4. Planetary gear shaft mounting hole; 5. Weight reduction hole groove; 6. Chamfered structure; 7. Reinforcing rib; 8. Annular oil groove; 9. Oil injection channel; 10. Sealing bolt. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0034] Example

[0035] See attached document Figure 1-2A multi-angle draft die planetary carrier forging structure includes a planetary carrier body 1, with a through sun gear mounting hole 2 in the center of the planetary carrier body 1. Multiple planet gear mounting seats 3 are evenly distributed along the axial direction on the top surface of the planetary carrier body 1. The planet gear mounting seats 3 are designed with variable draft dies, with the outer draft die for clamping at 0.5 degrees and the inner draft die at 2.5 degrees, allowing for a smooth transition between different draft angles. Planetary gear shaft mounting holes 4 are formed at the center of each of the multiple planet gear mounting seats 3. Multiple weight-reducing grooves 5 are formed on the end face of the planetary carrier body 1, evenly distributed along the circumference of the sun gear mounting hole 2. The planetary carrier body 1, sun gear mounting hole 2, planet gear mounting seats 3, and weight-reducing grooves 5 are integrally formed by hot forging.

[0036] In this embodiment, both ends of the planetary gear shaft mounting hole 4 are provided with chamfered structures 6; in addition, the inner wall of the sun gear mounting hole 2 is provided with a positioning keyway.

[0037] It should be noted that the installation accuracy and convenience of the components have been improved, and the assembly difficulty has been reduced.

[0038] In this embodiment, the inner wall of the weight reduction hole groove 5 is provided with a plurality of reinforcing ribs 7, which are arranged radially along the weight reduction hole groove 5, and the height of the reinforcing ribs 7 is consistent with the depth of the weight reduction hole groove 5.

[0039] It should be noted that while achieving lightweighting of the planetary carrier body 1, it is ensured that lightweighting does not affect the strength of the structure.

[0040] In this embodiment, the inner wall of the planetary gear shaft mounting hole 4 is provided with an annular oil groove 8, which is connected to the oil injection channel 9 opened on the side wall of the planetary gear mounting seat 3. The outer port of the oil injection channel 9 is provided with a sealing threaded hole. A sealing bolt 10 is adapted inside the sealing threaded hole, and the sealing bolt 10 is threadedly connected to the sealing threaded hole.

[0041] It should be noted that the lubricating oil flows into the annular oil groove 8 on the inner wall of the planetary gear shaft mounting hole 4 along the oil injection channel 9. The annular oil groove 8 can store a certain amount of lubricating oil. After the oil injection is completed, the sealing thread hole at the outer end of the oil injection channel 9 is sealed by the sealing bolt 10 to prevent lubricating oil leakage and impurities from entering.

[0042] The working principle of this utility model is as follows: First, the sun gear shaft is assembled with the planetary carrier body 1 through the sun gear mounting hole 2. The positioning keyway on the inner wall of the sun gear mounting hole 2 is precisely matched with the key structure of the sun gear shaft, which not only restricts the relative axial rotation of the sun gear shaft and the planetary carrier body 1, but also ensures the coaxiality of the two. When the transmission system is started, the sun gear is mounted on the sun gear shaft, and the power is input from the sun gear shaft. Through the meshing action of the positioning keyway and the key structure, the torque is transmitted to the planetary carrier body 1.

[0043] The planetary gear shaft is assembled through the planetary gear shaft mounting hole 4. The chamfered structure 6 at both ends of the planetary gear shaft reduces the guiding resistance during installation and avoids scratching the hole wall. The planetary gears are fitted onto the planetary gear shaft and mesh with the sun gear. When the sun gear rotates, it drives the planetary gears to rotate around their own axes. At the same time, the planetary gears drive the planetary carrier body 1 to revolve around the sun gear axis through the planetary gear shaft, realizing the splitting and direction conversion of power. In addition, the planetary gear mounting seat 3 is designed with variable draft angles. The outer draft angle for clamping is designed to be 0.5 degrees, and the inner draft angle is designed to be 2.5 degrees, so that the different draft angles are tangentially and smoothly transitioned.

[0044] Lubricating oil flows into the annular oil groove 8 on the inner wall of the planetary gear shaft mounting hole 4 along the oil injection channel 9. The annular oil groove 8 can store a certain amount of lubricating oil. After the oil injection is completed, the sealing thread hole at the outer end of the oil injection channel 9 is sealed by the sealing bolt 10 to prevent lubricating oil leakage and impurities from entering. When the new type of gear shaft rotates around its own axis, the relative motion between the shaft and the inner wall of the planetary gear shaft mounting hole 4 generates an oil film adsorption effect. The lubricating oil in the annular oil groove 8 is carried into the mating gap between the shaft and the hole to form a continuous lubricating film, which separates the metal contact surfaces, avoids dry friction, and ensures that the planetary gear shaft can continuously obtain lubricating oil within a 360-degree rotation range, achieving long-term lubrication under all working conditions and extending the service life of the components.

[0045] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-angle die-casting planetary carrier forging structure, characterized in that: It includes a planetary carrier body (1), and the planetary carrier body (1) has a through sun gear mounting hole (2) in the middle; The planetary carrier body (1) has multiple planetary gear mounting seats (3) evenly distributed along the circular axis on its top surface, and each of the multiple planetary gear mounting seats (3) has a planetary gear shaft mounting hole (4) at its center. Multiple weight-reducing grooves (5) are provided on the end face of the planetary carrier body (1), and the weight-reducing grooves (5) are evenly distributed along the circumferential direction of the sun gear mounting hole (2).

2. The multi-angle die-casting planetary carrier forging structure according to claim 1, characterized in that: The planetary carrier body (1), the sun gear mounting hole (2), the planetary gear mounting seat (3), and the weight reduction hole groove (5) are integrally formed by hot forging process.

3. The multi-angle die-casting planetary carrier forging structure according to claim 2, characterized in that: Both ends of the planetary gear shaft mounting hole (4) are provided with chamfered structures (6).

4. The multi-angle die-casting planetary carrier forging structure according to claim 3, characterized in that: The inner wall of the weight-reducing hole groove (5) is provided with a plurality of reinforcing ribs (7), the reinforcing ribs (7) are arranged radially along the weight-reducing hole groove (5), and the height of the reinforcing ribs (7) is consistent with the depth of the weight-reducing hole groove (5).

5. The multi-angle die-casting planetary carrier forging structure according to claim 4, characterized in that: The inner wall of the planetary gear shaft mounting hole (4) is provided with an annular oil groove (8), which is connected to the oil injection channel (9) opened on the side wall of the planetary gear mounting seat (3). The outer port of the oil injection channel (9) is provided with a sealing threaded hole.

6. The multi-angle die-casting planetary carrier forging structure according to claim 5, characterized in that: The sealing threaded hole is fitted with a sealing bolt (10), which is threadedly connected to the sealing threaded hole.

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