Anticorrosion inner ball cage

Abstract

The utility model provides a kind of anticorrosive inner ball cage, belong to transmission equipment technical field, including, inner ball cage shell, anticorrosive component, be located at the outer wall of inner ball cage shell, wherein: anticorrosive component includes lower sealing ring, lower threaded hole, upper sealing ring, telescopic sleeve, storage chamber, steel wire lock, conveying bolt, conveying hole, injection hole, plugging hole and pollution control component, conveying hole, injection hole and plugging hole are all set in the inner wall bottom edge of inner ball cage shell, conveying hole, injection hole and plugging hole are mutually communicated and set between. The anticorrosive component is set by the closed storage chamber of lower sealing ring, upper sealing ring and telescopic sleeve on the outer wall of inner ball cage shell, and end limit and sealing are carried out using steel wire lock, create a dynamic protection space around the outer wall of inner ball cage shell, its core value is to realize the intelligent recycling of lubricating oil and continuous rust protection, by loosening conveying bolt and conveying hole, injection hole and plugging hole in the bottom of inner ball cage shell.

Description

Technical Field

[0001] This utility model belongs to the field of transmission equipment technology, specifically relating to a corrosion-resistant inner ball cage. Background Technology

[0002] The inner race is a key component of the constant velocity joint (CV joint), widely used in automotive transmission systems. It is responsible for smoothly transmitting power to the wheels during steering and bouncing. Because the inner race is constantly exposed to complex and harsh working environments (such as mud, salt spray, sand, temperature fluctuations, and corrosive chemical media), its outer surface is highly susceptible to corrosion. This corrosion not only compromises the integrity of the race and reduces its mechanical strength, but also accelerates wear between it and the cage and balls, leading to abnormal transmission noise, increased vibration, and ultimately premature joint failure, severely impacting vehicle safety and reliability.

[0003] Currently, the main methods for corrosion protection of the outer surface of the inner CV cage are as follows: Surface coating treatment: such as electroplating, phosphating, or spraying anti-corrosion coatings. This method can provide some protection initially, but under long-term high-load operation, friction and wear, and harsh environmental corrosion, the coating is prone to peeling or wear, leading to exposure of the base metal and rapid corrosion, making the anti-corrosion effect unsustainable. Optimized sealing structure: Relying on the sealing performance of the CV cage boot to prevent external contaminants and moisture from entering the CV cage. However, the CV cage boot is prone to aging and damage. Once it fails, external corrosive media can enter, and the outer surface of the inner CV cage will be the first to suffer corrosion. Moreover, this method mainly protects the interior and has limited direct protection for the outer wall of the CV cage shell. Using high-performance grease: Filling the CV cage with rust-preventive grease, some of which can seep out to the contact surface through the squeezing action during operation, providing some rust prevention and lubrication. However, in traditional structures, the grease mainly serves the internal rolling contact pairs (balls, raceways), making it difficult to effectively, evenly, and continuously cover the entire outer wall surface of the inner CV cage shell, especially areas far from the internal lubrication points. Meanwhile, as the usage time increases, the performance of the grease decreases (oxidation, contamination, oil separation), and its rust prevention ability also weakens.

[0004] The main problems with existing technologies are: Inadequate protection: the surface coating is easily worn and peeled off. Incomplete protection: it relies on the reliability of external seals and lacks targeted protection for the outer wall of the CV joint shell, making it difficult for grease to effectively wet the entire outer surface. Inefficient resource utilization: the degraded (aged) grease inside the CV joint is usually discarded or needs to be replaced entirely, failing to utilize its potential residual rust-preventing capabilities for protecting the outer wall. Inconvenient maintenance: once corrosion occurs or the rust-preventing medium needs to be replaced, it is often necessary to disassemble the entire universal joint or CV joint sleeve, resulting in high maintenance costs. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant inner ball cage, which aims to solve the problems raised in the background art.

[0006] A corrosion-resistant inner ball cage, comprising,

[0007] Inner spherical cage shell;

[0008] A corrosion-resistant component is located on the outer wall of the inner spherical cage shell. The corrosion-resistant component includes a lower sealing ring, a lower threaded hole, an upper sealing ring, a telescopic sleeve, a storage chamber, wire locks, a conveying bolt, a conveying hole, an injection hole, a sealing hole, and a sewage discharge component. The conveying hole, injection hole, and sealing hole are all located at the bottom edge of the inner wall of the inner spherical cage shell and are interconnected. The lower and upper sealing rings are respectively fitted onto the outer walls of both ends of the inner spherical cage shell. The telescopic sleeve is fitted onto the outer wall of the inner spherical cage shell. The space formed between the telescopic sleeve and the inner spherical cage shell serves as the storage chamber. Two wire locks are respectively fitted onto the recesses at both ends of the telescopic sleeve. The lower threaded hole is located on the inner wall of the lower sealing ring. The conveying bolt is threaded into the inner wall of the lower threaded hole, and one end of the conveying bolt is threaded into the inner wall of the sealing hole. The sewage discharge component is located on the outer wall of the upper sealing ring.

[0009] Furthermore, the sewage discharge assembly includes a sewage discharge hole and a sewage discharge bolt. The sewage discharge hole is located on the outer wall of the upper sealing ring, and the sewage discharge hole is interconnected with the storage chamber.

[0010] Furthermore, the drain bolt is threaded onto the inner wall of the drain hole.

[0011] Furthermore, the outer wall of the lower sealing ring is provided with a lower mounting hole, and the inner wall of the lower mounting hole is threaded with a lower fixing bolt.

[0012] Furthermore, one end of the lower fixing bolt is threaded to the opening on the inner wall of the inner ball cage shell.

[0013] Furthermore, a spline shaft is embedded in the bottom opening of the inner wall of the inner ball cage shell.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This anti-corrosion component creates a dynamic protective space surrounding the outer wall of the inner spherical cage shell by setting a closed storage chamber consisting of a lower sealing ring, an upper sealing ring, and a telescopic sleeve on the outer wall of the inner spherical cage shell, and using wire locks for end limiting and sealing. Its core value lies in achieving intelligent recycling and continuous rust prevention of the lubricating oil: after the rust-preventive lubricating oil is injected during final assembly, loosening the conveying bolts opens the conveying hole, injection hole, and sealing hole at the bottom of the inner spherical cage shell, allowing some fresh lubricating oil to be precisely guided into the storage chamber. This lubricating oil then wets the outer wall of the inner spherical cage shell, forming an initial anti-corrosion layer. Tightening the conveying bolts effectively seals the channel, preventing uncontrolled leakage of internal lubricating oil and maintaining the pressure in the storage chamber. As the equipment operates, the performance of the internal lubricating oil gradually decreases... When the lubricating oil is lowered, the conveying bolts can be operated again to controllably transport the waste lubricating oil to the storage chamber for secondary use, continuing to exert its anti-rust effect and significantly improving the utilization rate of lubricating oil. When the lubricating oil in the storage chamber is completely ineffective and needs to be replaced, simply open the drain bolt at the upper sealing ring to quickly discharge the waste oil through the connected drain hole. The operation is extremely simple. The entire design cleverly utilizes the equipment's own lubrication system and achieves closed-loop management of "fresh oil injection protection - waste oil recycling and reuse - convenient waste oil discharge" through simple bolt control. Without the need for an additional oil supply system, it provides efficient, economical, and long-lasting dynamic anti-rust protection for the outer wall of the inner ball cage shell. At the same time, it has a compact structure, reliable sealing, and convenient maintenance. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Fig. 1 This is a perspective view of the present utility model;

[0018] Fig. 2 This is a partial half-sectional perspective view of the present invention;

[0019] Fig. 3 This is a perspective view of the lifting frame of this utility model.

[0020] In the diagram: 11. Inner ball cage shell; 2. Lower sealing ring; 3. Upper sealing ring; 4. Telescopic sleeve; 5. Steel wire lock; 6. Conveying bolt; 7. Lower fixing bolt; 8. Splined shaft; 101. Conveying hole; 102. Injection hole; 103. Sealing hole; 201. Lower threaded hole; 202. Lower mounting hole; 301. Drain hole; 302. Drain bolt; 401. Storage chamber. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figs. 1-3 The technical solution provided in this embodiment is as follows:

[0025] A corrosion-resistant inner ball cage, comprising,

[0026] Inner spherical cage shell 1;

[0027] The anti-corrosion component is located on the outer wall of the inner ball cage shell 1. The anti-corrosion component includes a lower sealing ring 2, a lower threaded hole 201, an upper sealing ring 3, a telescopic sleeve 4, a storage chamber 401, a wire lock 5, a conveying bolt 6, a conveying hole 101, an injection hole 102, a sealing hole 103, and a sewage discharge component. The conveying hole 101, injection hole 102, and sealing hole 103 are all located at the bottom edge of the inner wall of the inner ball cage shell 1. The conveying hole 101, injection hole 102, and sealing hole 103 are interconnected. The lower sealing ring 2... The upper sealing ring 3 is respectively fitted onto the outer walls of both ends of the inner ball cage shell 1, and the telescopic sleeve 4 is fitted onto the outer wall. The space formed between the telescopic sleeve 4 and the inner ball cage shell 1 is set as the storage chamber 401. Two wire locks 5 are respectively fitted onto the recesses at both ends of the telescopic sleeve 4. The lower threaded hole 201 is opened on the inner wall of the lower sealing ring 2. The conveying bolt 6 is threaded to the inner wall of the lower threaded hole 201. One end of the conveying bolt 6 is threaded to the inner wall of the sealing hole 103. The sewage discharge component is located on the outer wall of the upper sealing ring 3.

[0028] In a specific embodiment of this utility model, firstly, the lower sealing ring 2 and the upper sealing ring 3 are fitted onto the outer walls of both ends of the inner ball cage shell 1. Then, the telescopic sleeve 4 is installed on the outer walls of the lower sealing ring 2 and the upper sealing ring 3. The wire lock 5 is used for limiting and sealing. Finally, the spline shaft 8 is installed inside the inner ball cage shell 1. After final assembly, rust-preventive lubricating oil is injected into the inner ball cage shell 1. At this time, the conveying bolt 6 is loosened to make the injection hole 102, the sealing hole 103 and the sealing hole 103 interconnected, and some lubricating oil is injected into the storage chamber 401. The inner wall of the inner ball cage shell 1 is wetted to prevent rust. At this time, the conveying bolt 6 is rotated to seal the sealing hole 103, so as to prevent the internal lubricating oil of the inner ball cage shell 1 from flowing uncontrollably into the storage chamber 401. For subsequent rust prevention and lubrication, the conveying bolt 6 is controlled to transport the lubricating oil that has been used in the inner ball cage shell 1 for a period of time to the storage chamber 401 for reuse of waste lubricating oil. When the internal lubricating oil of the storage chamber 401 needs to be discharged, the drain bolt 302 is opened to open the drain hole 301 and discharge the waste lubricating oil.

[0029] Specifically, the sewage discharge assembly includes a sewage discharge hole 301 and a sewage discharge bolt 302. The sewage discharge hole 301 is located on the outer wall of the upper sealing ring 3, and the sewage discharge hole 301 is interconnected with the storage chamber 401.

[0030] In a specific embodiment of this utility model, the drain hole 301 and the storage chamber 401 are interconnected, which can ensure that waste lubricating oil is discharged quickly.

[0031] Specifically, the drain bolt 302 is threaded onto the inner wall of the drain hole 301.

[0032] In a specific embodiment of this utility model, the drain bolt 302 is threadedly connected to the inner wall of the drain hole 301, which can ensure sealing.

[0033] Specifically, the outer wall of the lower sealing ring 2 is provided with a lower mounting hole 202, and the inner wall of the lower mounting hole 202 is threaded with a lower fixing bolt 7.

[0034] In a specific embodiment of this utility model, the inner wall of the lower mounting hole 202 is threaded with a lower fixing bolt 7, which can ensure the stability of the installation.

[0035] Specifically, one end of the lower fixing bolt 7 is threaded to the opening on the inner wall of the inner ball cage shell 1.

[0036] In a specific embodiment of this utility model, one end of the lower fixing bolt 7 is threaded to the opening on the inner wall of the inner ball cage shell 1, which can ensure a stable installation effect.

[0037] Specifically, a spline shaft 8 is embedded in the bottom opening of the inner wall of the inner ball cage shell 1.

[0038] In a specific embodiment of this utility model, a spline shaft 8 is embedded in the bottom opening of the inner wall of the inner ball cage shell 1, which can be conveniently and quickly installed.

[0039] Working principle:

[0040] First, the lower sealing ring 2 and the upper sealing ring 3 are fitted onto the outer walls of both ends of the inner ball cage shell 1. Then, the telescopic sleeve 4 is installed on the outer walls of the lower sealing ring 2 and the upper sealing ring 3. The wire lock 5 is used for limiting and sealing. Finally, the splined shaft 8 is installed inside the inner ball cage shell 1. After final assembly, rust-preventive lubricating oil is injected into the inner ball cage shell 1. At this time, the conveying bolt 6 is loosened to make the injection hole 102, the sealing hole 103 and the sealing hole 103 connected, and some lubricating oil is injected into the inner wall of the storage chamber 401. The outer wall of the ball cage shell 1 is wetted to prevent rust. At this time, the conveying bolt 6 is rotated to seal the sealing hole 103, preventing the internal lubricating oil of the inner ball cage shell 1 from flowing uncontrollably into the storage chamber 401. For subsequent rust prevention and lubrication, the conveying bolt 6 is controlled to transport the lubricating oil that has been used in the inner ball cage shell 1 for a period of time to the storage chamber 401 for reuse of waste lubricating oil. When the lubricating oil in the storage chamber 401 needs to be drained, the drain bolt 302 is opened to open the drain hole 301 and drain the waste lubricating oil.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A corrosion-resistant inner ball cage, characterized in that, include, Inner spherical cage shell (1); The anti-corrosion component is located on the outer wall of the inner ball cage shell (1), wherein: the anti-corrosion component includes a lower sealing ring (2), a lower threaded hole (201), an upper sealing ring (3), a telescopic sleeve (4), a storage chamber (401), a wire lock (5), a conveying bolt (6), a conveying hole (101), an injection hole (102), a sealing hole (103), and a sewage discharge component. The conveying hole (101), the injection hole (102), and the sealing hole (103) are all located at the bottom edge of the inner wall of the inner ball cage shell (1). The conveying hole (101), the injection hole (102), and the sealing hole (103) are interconnected. The lower sealing ring (201) 2) The upper sealing ring (3) is respectively fitted on the outer walls of both ends of the inner ball cage shell (1), the telescopic sleeve (4) is fitted on the outer wall, the space formed between the telescopic sleeve (4) and the inner ball cage shell (1) is set as a storage chamber (401), two wire locks (5) are respectively fitted on the recesses at both ends of the telescopic sleeve (4), the lower threaded hole (201) is opened on the inner wall of the lower sealing ring (2), the conveying bolt (6) is threaded to the inner wall of the lower threaded hole (201), one end of the conveying bolt (6) is threaded to the inner wall of the sealing hole (103), and the sewage discharge assembly is located on the outer wall of the upper sealing ring (3).

2. The corrosion-resistant inner ball cage according to claim 1, characterized in that, The sewage discharge assembly includes a sewage discharge hole (301) and a sewage discharge bolt (302). The sewage discharge hole (301) is located on the outer wall of the upper sealing ring (3). The sewage discharge hole (301) and the storage chamber (401) are interconnected.

3. The corrosion-resistant inner ball cage according to claim 2, characterized in that, The drain bolt (302) is threaded onto the inner wall of the drain hole (301).

4. The corrosion-resistant inner ball cage according to claim 3, characterized in that, The lower sealing ring (2) has a lower mounting hole (202) on its outer wall, and a lower fixing bolt (7) is threadedly connected to the inner wall of the lower mounting hole (202).

5. The corrosion-resistant inner ball cage according to claim 4, characterized in that, One end of the lower fixing bolt (7) is threaded to the opening on the inner wall of the inner ball cage shell (1).

6. The corrosion-resistant inner ball cage according to claim 5, characterized in that, The inner wall bottom opening of the inner ball cage shell (1) is fitted with a spline shaft (8).

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