Rust-proof treatment device for steering knuckle master pin

Abstract

The utility model relates to the technical field of steering knuckle master pins, and discloses an anti-rust treatment device for a steering knuckle master pin, which comprises a master pin shaft, the upper end and the lower end of the inner wall of the master pin shaft are fixedly connected with neck bushes, and the front end and the rear end of the bottom of the master pin shaft are provided with oil outlets. The bottom side of the outer portion of the main pin shaft is fixedly connected with a sealing assembly for sealing the oil outlet hole, the bottom end of the main pin shaft is slidably connected with a plane bearing, the bottom side of the plane bearing is fixedly connected with a gasket, the sealing assembly comprises a strong spring, the top end of the strong spring is fixedly connected to the bottom side of the outer portion of the main pin shaft, and the top end of the strong spring is fixedly connected with the bottom side of the outer portion of the main pin shaft. And the bottom end of the strong spring is fixedly connected with a sealing ring. According to the utility model, the lubricating grease is filled into the main pin shaft, and the lubricating grease overflows from the neck bush and the plane bearing after the main pin shaft is filled, so that all parts are fully lubricated, the effect of lubricating the plane bearing is achieved, and the service life of the main pin shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of kingpins of steering knuckles, in particular to an anti-rust treatment device for kingpins of steering knuckles. Background Art

[0002] The kingpin of a steering knuckle is an important component in an automotive steering system. Its main function is to connect the steering knuckle and the vehicle frame, and at the same time allow the wheels to rotate freely during the steering process. The kingpin is usually a cylindrical metal shaft, and its design must be able to withstand various mechanical requirements during vehicle driving, including impact loads from the road surface, torque during steering, and the weight of the vehicle itself. One end of the kingpin is connected to the vehicle frame, and the other end is connected to the steering knuckle, which is in turn connected to the wheel. Such a layout enables the steering system to precisely control the movement of the wheels.

[0003] In the prior art, after lubricating grease is filled from the top, most of the lubricating grease can only smoothly pass through the channel to reach the kingpin and the steering knuckle bushing part. After pressure filling, the butter often overflows from the lower plug of the steering knuckle or the edges of the upper and lower bushings, and the plane bearing part that requires more lubrication cannot be well lubricated, resulting in early damage to the kingpin and the plane bearing. Therefore, an anti-rust treatment device for the kingpin of a steering knuckle is proposed to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides an anti-rust treatment device for the kingpin of a steering knuckle, aiming to improve the problem that the service life of some kingpins of steering knuckles is shortened due to the lack of comprehensive coverage of lubricating oil in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] An anti-rust treatment device for the kingpin of a steering knuckle, comprising a kingpin shaft. Inner bushings are fixedly connected to both the upper and lower ends of the inner wall of the kingpin shaft. Oil outlet holes are formed at both the front and rear ends of the bottom of the kingpin shaft. A sealing assembly for sealing the oil outlet holes is fixedly connected to the outer bottom side of the kingpin shaft. A plane bearing is slidably connected to the bottom end of the kingpin shaft, and a gasket is fixedly connected to the bottom side of the plane bearing.

[0007] As a further description of the above technical solution:

[0008] The sealing assembly includes a strong spring. The top end of the strong spring is fixedly connected to the outer bottom side of the kingpin shaft, and the bottom end of the strong spring is fixedly connected to a sealing ring.

[0009] As a further description of the above technical solution:

[0010] A plurality of reinforcing ribs are fixedly connected inside the main pin shaft, and the material of the reinforcing ribs is titanium alloy;

[0011] As a further description of the above technical solution:

[0012] The outside of the sealing ring is slidably connected to the outside of the bottom end of the main pin shaft, and the bottom side of the sealing ring is in contact with the top side of the plain bearing;

[0013] As a further description of the above technical solution:

[0014] The bottom side of the main pin shaft is in contact with the top side of the gasket, and a plurality of round holes are formed inside the inner bushing.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by filling lubricating grease into the inside of the main pin shaft, it is found that both the inner bushing and the plain bearing have lubricating grease overflow after filling, indicating that each part is lubricated sufficiently, and then the effect of lubricating the plain bearing is achieved, thereby prolonging its service life.

[0017] 2. In the utility model, the strong spring can store elastic potential energy, and then give a force in the opposite direction to the sealing ring to closely fit with the plain bearing. And after the plain bearing drives the gasket to fit with the bottom side of the main pin shaft, the gasket and the sealing ring that are closely fitted with the plain bearing are used to make the lubricating oil stay inside the plain bearing, thereby avoiding the loss of lubricating oil, and then improving the lubrication efficiency between the main pin shaft and the plain bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of an anti-rust treatment device for a kingpin of a steering knuckle proposed by the utility model;

[0019] Figure 2 is a structural schematic diagram of a reinforcing rib of an anti-rust treatment device for a kingpin of a steering knuckle proposed by the utility model;

[0020] Figure 3 is a structural schematic diagram of a gasket of an anti-rust treatment device for a kingpin of a steering knuckle proposed by the utility model;

[0021] Figure 4 is Figure 2 the enlarged view at A in

[0022] Legend:

[0023] 1. Main pin shaft; 2. Inner bushing; 3. Round hole; 4. Oil outlet hole; 5. Strong spring; 6. Sealing ring; 7. Plain bearing; 8. Gasket; 9. Reinforcing rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Referring to Figures 1 to 3 , an embodiment provided by the present utility model: an anti-rust treatment device for a kingpin of a steering knuckle, which includes a kingpin shaft 1. Inner bushings 2 are fixedly connected to both the upper and lower ends of the inner wall of the kingpin shaft 1. By directly and smoothly contacting the kingpin shaft 1, the kingpin shaft 1 can reduce the wear it receives during use. A plurality of round holes 3 are provided inside the inner bushing 2 for retaining lubricating oil and covering the kingpin shaft 1. Oil outlet holes 4 are provided at both the front and rear ends of the bottom of the kingpin shaft 1, with a diameter of ten millimeters and ensuring that the lubricating oil can be evenly distributed between the kingpin shaft 1 and the bearing, thereby achieving a more efficient lubrication effect. A sealing assembly for sealing the oil outlet holes 4 is fixedly connected to the outer bottom side of the kingpin shaft 1. The sealing assembly includes a strong spring 5. The top end of the strong spring 5 is fixedly connected to the outside of the kingpin shaft 1. By fixing and restricting both ends of the strong spring 5, the strong spring 5 can be evenly stressed. The bottom end of the strong spring 5 is fixedly connected to a sealing ring 6. After the strong spring 5 is compressed, it provides a restoring force to the sealing ring 6.

[0026] Referring to Figures 2 to 4 , the outside of the sealing ring 6 is slidably connected to the outside of the bottom end of the kingpin shaft 1. By the restriction of the kingpin shaft 1, the sealing ring 6 stably slides vertically and closely fits the kingpin shaft 1. A plain bearing 7 is slidably connected to the bottom end of the kingpin shaft 1. The bottom side of the sealing ring 6 is in contact with the top side of the plain bearing 7. The bottom side of the sealing ring 6 is in contact with the top side of the plain bearing 7. This can ensure the stable position of the plain bearing 7, prevent dust and other impurities from entering the bearing interior, and at the same time reduce the loss of lubricating oil. A gasket 8 is fixedly connected to the bottom side of the plain bearing 7 for dispersing the load and reducing the loss of lubricating oil. The bottom side of the kingpin shaft 1 is in contact with the top side of the gasket 8. The lubricating oil inside the kingpin shaft 1 and the plain bearing 7 is blocked by the gasket 8. A plurality of reinforcing ribs 9 are fixedly connected to the inside of the kingpin shaft 1. The material of the reinforcing ribs 9 is titanium alloy. As a high-performance material, titanium alloy has characteristics such as light weight, high strength, and excellent corrosion resistance. Using titanium alloy as the material of the reinforcing ribs 9 can significantly improve the overall strength and durability of the kingpin shaft 1, while still maintaining a relatively light weight.

[0027] Working principle: First, install two inner bushings 2 inside the main pin shaft 1 without exposing them. Through the smooth contact between the inner bushing 2 and the main pin shaft 1, wear is reduced, and round holes 3 are provided for retaining and facilitating the covering of lubricating oil. Through the two 10-mm oil outlet holes 4 opened at the bottom of the main pin shaft 1, the lubricating oil inside the main pin shaft 1 can flow into the inside of the plain bearing 7 through the oil outlet holes 4, enabling the plain bearing 7 to be lubricated as well. When installing the plain bearing 7, the plain bearing 7 is clamped at the bottom end of the main pin shaft 1 by using the press-fitting method. As the plain bearing 7 goes deeper, it will push the sealing ring 6 and compress the strong spring 5, enabling the strong spring 5 to store elastic potential energy, and then giving the sealing ring 6 a reverse force to closely fit with the plain bearing 7. After the plain bearing 7 drives the gasket 8 to fit with the bottom side of the main pin shaft 1, the lubricating oil can be retained inside the plain bearing 7 by using the sealing ring 6 that closely fits the gasket 8 and the plain bearing 7, thus avoiding the loss of lubricating oil and then improving the lubrication efficiency of the main pin shaft 1 and the plain bearing 7. In addition, a plurality of reinforcing ribs 9 are fixedly connected inside the main pin shaft 1. These reinforcing ribs 9 are made of titanium alloy, improving the overall strength and durability of the main pin shaft 1. Finally, the outer surface of the entire main pin is polished to reach the qualified finish.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rust prevention device for a steering knuckle kingpin, comprising a kingpin shaft (1), characterized in that: The inner wall of the main pin shaft (1) is fixedly connected to inner bushings (2) at both upper and lower ends, the bottom of the main pin shaft (1) is provided with oil outlet holes (4) at both front and rear ends, the outer bottom side of the main pin shaft (1) is fixedly connected to a sealing assembly for sealing the oil outlet hole (4), the bottom end of the main pin shaft (1) is slidably connected to a plane bearing (7), and the bottom side of the plane bearing (7) is fixedly connected to a gasket (8).

2. The rust prevention device for a steering knuckle kingpin according to claim 1, characterized in that: The sealing assembly comprises a strong spring (5), the top end of the strong spring (5) is fixedly connected to the outer bottom side of the kingpin shaft (1), and the bottom end of the strong spring (5) is fixedly connected to a sealing ring (6).

3. The rust prevention device for a steering knuckle kingpin according to claim 1, characterized in that: A plurality of reinforcing ribs (9) are fixedly connected inside the kingpin shaft (1), and the reinforcing ribs (9) are made of titanium alloy.

4. The rust prevention device for a steering knuckle kingpin according to claim 2, characterized in that: The outside of the sealing ring (6) is slidably connected to the outside of the bottom end of the kingpin shaft (1), and the bottom side of the sealing ring (6) is in contact with the top side of the plane bearing (7).

5. The rust prevention device for a steering knuckle kingpin according to claim 1, characterized in that: The bottom side of the kingpin shaft (1) contacts the top side of the gasket (8), and a plurality of circular holes (3) are provided inside the inner bushing (2).

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