High-strength planetary gear assembly

Abstract

The high-strength planetary gear assembly comprises a gear sealing box, a fixed gear ring, a planetary gear disc and an input shaft rod, the planetary gear disc and the input shaft rod are located on the inner side of the fixed gear ring, a plurality of planetary gears meshed with the inner side of the fixed gear ring in a transmission mode are arranged on the surface of the planetary gear disc, and a plurality of sleeve holes are formed in the surface of the planetary gear disc. The graphite lubricating assembly comprises a linkage strip and solid lubricating blocks connected to the inner side of the sleeve hole in a sliding and sleeving mode, a fixed top ring arranged opposite to the surface of the graphite lubricating assembly is fixedly installed on one side of the gear sealing box, and the linkage strip is located between the adjacent solid lubricating blocks. According to the grinding device, in the rotating process of the planetary wheel disc, the top protrusions are alternately connected with the top faces of the solid lubricating blocks and the top faces of the touch protrusions in an abutting mode, then the solid lubricating blocks are driven to slide on the inner sides of the sleeve holes in a reciprocating mode, and surface friction grinding of the graphite lubricating blocks is achieved. In the process, the graphite powder can be uniformly released to a motion working area of the planetary gear disc, so that a continuous self-lubricating effect is provided for the planetary gear assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gears, in particular to a high-strength planetary gear assembly. Background Art

[0002] In existing planetary gear transmissions, traditional lubricants or greases are typically used to reduce friction during gear operation, ensuring transmission efficiency and equipment life. However, traditional lubrication methods have some significant drawbacks, such as the need for regular lubricant additions and the tendency for lubricants to evaporate or become ineffective under high temperature and high load conditions. Furthermore, existing planetary gear structures often utilize a single seal design, which is prone to seal wear and failure after long-term operation, allowing external dust and impurities to enter the gearbox, further exacerbating gear wear and equipment failure.

[0003] Existing gear systems rely on lubricating oil to reduce friction between gears. However, lubricating oil evaporates easily in high-temperature environments, resulting in reduced lubrication effectiveness and increased gear wear. Furthermore, the lubricating oil requires regular replacement and replenishment, increasing equipment maintenance costs and downtime. Furthermore, grease is easily inactivated by the ingress of dust and impurities, causing wear marks on the gear surfaces and shortening the equipment's service life. Most existing planetary gear assemblies utilize a single-layer seal structure, which fails to effectively prevent the ingress of dust and impurities into the gearbox. When seals wear or age, dust and metal debris easily enter the gearbox, mixing with the lubricating oil to form abrasives, further exacerbating gear wear. Furthermore, conventional seal designs often struggle to withstand high-temperature and high-speed operating conditions, leading to seal failure and thus compromising stable equipment operation. In light of these issues, research and improvements are being conducted to address these existing challenges. The goal is to provide a high-strength planetary gear assembly to address these issues. This technology aims to achieve both a solution and improved practical value. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art or related technologies.

[0005] The utility model relates to a high-strength planetary gear assembly, comprising a gear housing, a fixed gear ring, and a planetary wheel and input shaft located inside the fixed gear ring. The planetary wheel is provided with a plurality of planetary gears on its surface that mesh with the inner side of the fixed gear ring. The planetary wheel is provided with a plurality of bores. A graphite lubrication assembly comprises a linkage bar and a solid lubricating block that slides within the bores. A fixed top ring is fixedly mounted on one side of the gear housing, positioned opposite the surface of the graphite lubrication assembly. The linkage bar is positioned between adjacent solid lubricating blocks, and the linkage bar is provided with a fulcrum block and a contact protrusion on its surface, with the fulcrum block positioned between the contact protrusion and the solid lubricating block. The fixed top ring is provided with a top protrusion on its surface. The planetary wheel and input shaft cooperate to achieve efficient transmission of the planetary gears inside the fixed gear ring. Furthermore, the bores provide sliding contact with the solid lubricating block, generating graphite powder through friction for self-lubrication, thereby extending the service life of the gear assembly.

[0006] In a preferred embodiment, the present invention can be further configured as follows: two gear closures are symmetrically arranged on either side of the fixed gear ring. The planetary wheels and one end of the input shaft extend through the exterior of each gear closure. Sealing rings are provided on the surfaces of the gear closures, abutting against the surface of the fixed gear ring. This symmetrical arrangement of the two gear closures improves the overall stability and load-bearing capacity of the planetary gear assembly, ensuring smooth operation under high loads.

[0007] In a preferred embodiment, the present invention can be further configured such that the surfaces of the planetary wheel and the input shaft are each sleeved with a dynamic seal, which is then sleeved onto the surface of the gear housing. The sleeved dynamic seals on the surfaces of the planetary wheel and the input shaft improve the sealing performance of the assembly, preventing lubricant leakage while effectively blocking the ingress of external dust.

[0008] In a preferred embodiment, the present invention can be further configured such that the outer periphery of the solid lubricating block, which is a graphite block, slides frictionally with the inner side of the sleeve hole. The friction and sliding of the solid lubricating block on the inner side of the sleeve hole automatically releases graphite powder, providing a long-lasting self-lubricating effect within the gear, thereby reducing gear wear.

[0009] In a preferred embodiment, the present invention can be further configured such that one side of the fulcrum block abuts the surface of the planetary wheel, serving as a fulcrum for the deflection of the solid lubricating block and the contact protrusion. This fulcrum block creates a levering effect between the solid lubricating block and the contact protrusion during operation, further optimizing the release efficiency of graphite powder and enhancing lubrication effectiveness.

[0010] In a preferred embodiment, the present invention can be further configured such that the contact protrusions and top protrusions are arched structures, and that the top protrusions alternately abut against the top surfaces of the solid lubricating blocks and the contact protrusions during rotation of the planetary disc. This alternating abutment of the top protrusions with the solid lubricating blocks and the contact protrusions achieves uniform distribution of graphite powder on the inside of the planetary disc, thereby ensuring uniform lubrication and reducing wear during high-speed gear rotation.

[0011] In a preferred embodiment, the present invention can be further configured such that the linkage bar and fixed top ring are metal spring structures, with the top protrusions and contact protrusions evenly distributed along the circumference. The spring structures of the linkage bar and fixed top ring ensure that pressure is automatically adjusted during gear operation, thereby maintaining continuous self-lubrication during wear.

[0012] The beneficial effects achieved by the utility model are:

[0013] 1. In the present invention, during the rotation of the planetary wheel, the top protrusions are alternately brought into contact with the top surfaces of the solid lubricating block and the contact protrusions, thereby driving the solid lubricating block to slide back and forth inside, thereby achieving surface friction grinding of the graphite lubricating block. This process can evenly release graphite powder into the moving working area of ​​the planetary wheel, thereby providing a continuous self-lubricating effect for the planetary gear assembly. Graphite powder has excellent lubricating properties and can effectively reduce the frictional resistance of the gears during operation, reducing wear and energy loss at the gear meshing point. Through this design, the device can achieve long-term low-friction operation without the need for frequent addition of lubricating oil, significantly improving transmission efficiency and equipment service life.

[0014] 2. In the present invention, the planetary gear system in the fixed gear ring is isolated from the external environment by the gear sealing box and the sealing ring design. The dynamic seal and fixed top ring configured inside the device form a multi-layer sealing barrier when the gear is running, which can effectively prevent the entry of external dust and impurities. This design not only protects the internal gears and lubrication system, prevents gear wear and lubrication failure caused by dust entry, but also prevents the leakage of lubricating powder, ensuring the durability of the lubrication effect. Through the multi-layer protection of the sealing component, the device can still maintain excellent sealing in high-temperature and high-speed operation environments, avoid the extraction of graphite lubricating powder, and further improve the reliability and working stability of the planetary gear assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the gear sealing box and the opposite surfaces of the planetary wheel according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic structural diagram of a fixed top ring and a graphite lubrication assembly according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic structural diagram of a graphite lubrication component according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, gear box; 110, sealing ring; 120, dynamic seal; 200, fixed gear ring; 210, planetary wheel; 211, planetary gear; 212, sleeve hole; 220, input shaft; 300, fixed top ring; 310, top protrusion; 400, graphite lubrication assembly; 410, linkage bar; 420, solid lubrication block; 411, fulcrum block; 412, contact protrusion. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0023] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0024] The following is combined with Figure 1-Figure 5 Some embodiments of the present invention provide a high-strength planetary gear assembly.

[0025] One embodiment of the present invention includes a gear housing 100, a fixed gear ring 200, a planetary gear disc 210, an input shaft 220, a fixed top ring 300, and a graphite lubrication assembly 400. The fixed gear ring 200 is mounted inside the gear housing 100 and secured by bolts. The planetary gear disc 210 engages with the interior of the fixed gear ring 200 via the input shaft 220, achieving the transmission function of the planetary gears. The surface of the planetary gear disc 210 is provided with a plurality of planetary teeth 211 that mesh with the inner ring gear of the fixed gear ring 200, thereby driving the operation of the entire assembly.

[0026] In this embodiment, the graphite lubrication assembly 400 is mounted inside the planetary disc 210 and includes a linkage bar 410 and a solid lubricating block 420. The solid lubricating block 420 is a graphite lubricating block structure that slides inside the sleeve hole 212 and releases graphite powder through friction during the rotation of the planetary disc 210, achieving a self-lubricating effect. The top protrusions 310 alternately abut against the top surfaces of the solid lubricating block 420 and the contact protrusions 412, enabling reciprocating motion of the solid lubricating block 420 inside the sleeve hole 212, ensuring uniform lubrication.

[0027] Implementation Effect: By providing the linkage bar 410 and the solid lubricating block 420, the planetary gear assembly can continuously provide lubrication to the surface of the planetary wheel 210 during operation, reducing friction and wear, and extending the service life of the gears. At the same time, the symmetrical arrangement of the dual-gear enclosure 100 enhances the structural stability of the assembly.

[0028] In another embodiment, the present invention further optimizes the above-described structure. In this embodiment, a top ring 300 is fixedly mounted inside the gear housing 100 to enhance the sealing performance of the planetary gear assembly. The top ring 300 is provided with a plurality of top protrusions 310 on its surface, which cooperate with contact protrusions 412 to achieve a dynamic sealing effect.

[0029] The planetary wheel 210 and the input shaft 220 are both sleeved with dynamic seals 120 and connected by elastic elements to further improve the sealing and stability of the device. Under slip and impact conditions, the dynamic seals 120 can effectively absorb vibrations, thereby improving the durability of the gear assembly.

[0030] Working Principle: When the planetary gear assembly begins operating, the planetary disc 210 drives the input shaft 220, causing the solid lubricating block 420 in the graphite lubrication assembly 400 to slide against the inside of the sleeve hole 212, releasing graphite powder for lubrication. Simultaneously, the interaction between the top protrusion 310 and the contact protrusion 412 ensures that the lubricating powder is evenly distributed across the surface of the planetary disc 210, improving lubrication and reducing wear.

[0031] Implementation effect: By adopting the combined design of the graphite lubrication block 420 and the metal spring linkage bar 410, the utility model not only has a good lubrication effect, but also can adjust the pressure through the spring to ensure continuous lubrication during the wear process, thereby improving the overall performance and life of the gear assembly.

[0032] The working principle and use process of this utility model:

[0033] When the input shaft 220 rotates, it drives the planetary wheel 210 to mesh within the fixed gear ring 200. The planetary wheel 210 meshes with the internal gearing of the fixed gear ring 200 through its multiple planetary teeth 211, thereby achieving power transmission. The output gear sleeve holes 212 on the planetary wheel 210 mate with the linkage bar 410, and the reciprocating contact between the top protrusion 310, the solid lubricating block 420, and the fulcrum block 411 provides lubrication.

[0034] During operation of the planetary gear assembly, the top protrusions 310 alternately contact the top surfaces of the solid lubricating block 420 and the contact protrusions 412, driving the solid lubricating block 420 to slide back and forth within the sleeve hole 212, generating friction. This friction causes graphite powder on the surface of the solid lubricating block 420 to be ground into the moving area of ​​the planetary wheel 210, creating a self-lubricating effect, reducing wear and extending the service life of the assembly.

[0035] To ensure the stability of the planetary gear assembly under high loads and high speeds, the device features a double-layer gear seal 100 and a fixed top ring 300. The combination of fixed top ring 300 and graphite lubrication assembly 400 creates an effective seal during operation. The contact between top protrusion 310 and contact protrusion 412 during rotation seals the internal lubricant, preventing the ingress of dust and impurities, ensuring clean, long-lasting operation of the internal gears.

[0036] Throughout this specification, terms such as "one embodiment," "some embodiments," or "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-strength planetary gear assembly, characterized in that: include: A gear sealing box (100), a fixed gear ring (200), a planetary wheel disc (210) and an input shaft (220) located inside the fixed gear ring (200), wherein the surface of the planetary wheel disc (210) is provided with a plurality of planetary teeth (211) that are in driving engagement with the inner side of the fixed gear ring (200), and the surface of the planetary wheel disc (210) is provided with a plurality of sleeve holes (212). The graphite lubrication assembly (400) includes a linkage bar (410) and a solid lubricating block ( 420), a fixed top ring (300) is fixedly mounted on one side of the gear sealing box (100) and is arranged opposite to the surface of the graphite lubrication component (400), the linkage bar (410) is located between adjacent solid lubrication blocks (420), and a fulcrum block (411) and a contact protrusion (412) are provided on the surface of the linkage bar (410), and the fulcrum block (411) is located between the contact protrusion (412) and the solid lubrication block (420), and a top protrusion (310) is provided on the surface of the fixed top ring (300).

2. A high-strength planetary gear assembly according to claim 1, characterized in that: There are two gear sealing boxes (100) symmetrically arranged on both sides of the fixed gear ring (200); one end of the planetary wheel (210) and the input shaft (220) respectively penetrate the outside of the two gear sealing boxes (100); and a sealing ring (110) is provided on the surface of the gear sealing box (100) and abuts against the surface of the fixed gear ring (200).

3. The high-strength planetary gear assembly according to claim 1, characterized in that: The surfaces of the planetary wheel (210) and the input shaft (220) are both sleeved with a dynamic seal (120), and the dynamic seal (120) is sleeved on the surface of the gear sealing box (100).

4. The high-strength planetary gear assembly according to claim 1, characterized in that: The outer periphery of the solid lubricating block (420) slides in friction with the inner side of the sleeve hole (212), and the solid lubricating block (420) is a graphite block structure.

5. The high-strength planetary gear assembly according to claim 1, characterized in that: One side of the fulcrum block (411) abuts against the surface of the planetary wheel disc (210), serving as a motion fulcrum for the lever deflection of the solid lubrication block (420) and the contact protrusion (412).

6. The high-strength planetary gear assembly according to claim 1, characterized in that: The contact protrusion (412) and the top protrusion (310) are arched structures, and when the planetary wheel (210) rotates, the top protrusion (310) alternately abuts against the top surfaces of the solid lubrication block (420) and the contact protrusion (412).

7. The high-strength planetary gear assembly according to claim 1, characterized in that: The linkage bar (410) and the fixed top ring (300) are metal spring structures, and the top protrusions (310) and the contact protrusions (412) are evenly distributed in the circumferential direction.

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