Rotating shaft oil seal with high wear resistance and high rebound resilience

Abstract

The utility model relates to a rotating shaft oil seal with high wear resistance and high rebound resilience, which comprises an outer ring, an inner ring and a connecting part, the outer ring and the inner ring are respectively arranged on the connecting part, an annular groove is formed among the outer ring, the inner ring and the connecting part, a reinforcing ring with an L-shaped section is arranged at the position of the outer ring and the connecting part, and the reinforcing ring is provided with an opening on the top surface of the connecting part. The oil seal is ingenious in improvement, and the spring steel wire arranged on the outer wall of the inner ring can improve the elasticity of the oil seal.

Description

Technical Field

[0001] This utility model relates to a high wear-resistant and high resilience rotary shaft oil seal. Background Technology

[0002] Oil seals are common sealing components, typically fitted onto rotating shafts. They allow the shaft to rotate while simultaneously isolating oil and dust, thus providing a sealing function. However, existing oil seals suffer from insufficient wear resistance and resilience, resulting in a short service life and failing to meet the demands of some high-load, high-frequency vibration operating conditions. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, this invention provides a high-wear-resistant and high-resilience rotary shaft oil seal, which can improve upon the above deficiencies.

[0004] This utility model relates to a high wear-resistant and high resilience rotary shaft oil seal, including an outer ring, an inner ring, and a connecting part. The connecting part is provided with an outer ring and an inner ring respectively. An circumferential groove is formed between the outer ring, the inner ring, and the connecting part. A reinforcing ring with an L-shaped cross-section is provided at the positions of the outer ring and the connecting part. The reinforcing ring has an opening on the top surface of the connecting part.

[0005] Furthermore, the outer wall of the inner ring is provided with an installation groove.

[0006] Furthermore, a spring steel wire is provided in the mounting groove.

[0007] Furthermore, the spring steel wire is made of SPCC material, and its surface is corrosion resistant.

[0008] Furthermore, a lip is provided on the bottom surface of the inner ring.

[0009] Furthermore, a lubricating layer is provided on the inner wall of the inner ring.

[0010] This invention features a clever improvement: a spring steel wire is incorporated into the outer wall of the inner ring to enhance the oil seal's elasticity. The design of both the inner and outer rings increases the oil seal's strength and wear resistance, thus extending its service life. This results in an oil seal with a significantly longer lifespan compared to traditional oil seals. Furthermore, it improves the response frequency and eccentricity adaptability of the oil seal lip, enhancing its following ability and resistance to large eccentricities and vibrations, and exhibiting high resilience. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Diagram: 1. Sealing body, 2. Reinforcing ring, 3. Spring steel wire, 31. Mounting groove, 4. Lubricating layer, 5. Circumferential groove, 6. Lip, 10. Outer ring, 20. Inner ring. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0014] like Figure 1 As shown, the high wear-resistant and high resilience rotary shaft oil seal of this utility model includes an outer ring 10, an inner ring 20, and a sealing body 1 integrally formed by a connecting part. The connecting part forms a structural connection with the outer ring and the inner ring, respectively, and the outer ring, the inner ring, and the connecting part together form an annular buffer groove. An L-shaped cross-section metal reinforcing ring 2 is embedded at the joint between the outer ring and the connecting part, and this reinforcing ring forms a process opening on the top surface of the connecting part. The rubber and the reinforcing ring are firmly bonded, with an adhesion strength ≥5MPa. This structural design not only improves the overall strength of the oil seal but also enhances its wear resistance.

[0015] Furthermore, the outer wall of the inner ring of the sealing body is precisely provided with an annular mounting groove 31, and a high-elasticity spring steel wire 3 is embedded in the mounting groove. The spring steel wire is made of SPCC cold-rolled carbon steel substrate, and the surface is treated with chrome plating to form a corrosion-resistant layer. This design can significantly improve the resilience of the oil seal, while the corrosion resistance of the spring steel wire also extends the service life of the oil seal.

[0016] Furthermore, the inner ring bottom surface is provided with a lip 6, which effectively improves the sealing performance of the oil seal. After 25,000 km of road testing, the oil seal showed no leakage or sediment, no lip cracking, and wear was controlled within 10%. The oil seal of this design has a hardness HS of 70-75, tensile strength ≥14MPa, and elongation at break ≥300%, indicating that the oil seal has good mechanical properties and wear resistance.

[0017] Furthermore, a lubrication layer 4, which is lithium-based grease and 0.5 mm thick, is provided on the inner wall of the inner ring. This lubrication layer effectively reduces friction between the inner ring and the shaft, further improving the service life and sealing performance of the oil seal.

[0018] Performance testing and evaluation:

[0019] Wear resistance test: Wear resistance was tested using a friction testing machine simulating actual working conditions. Under standard test conditions (speed 1500 rpm, temperature 80℃, load 50N), the wear of the oil seal of this invention was only 30% of that of a traditional oil seal after 100 hours of continuous operation. This result demonstrates that the oil seal of this invention has a significant advantage in wear resistance.

[0020] Resilience Test: Resilience was evaluated using dynamic performance testing equipment. Under the same test conditions, the oil seal lip of this invention can quickly recover its original shape when subjected to periodic eccentric vibration, with a response frequency 40% higher than that of traditional oil seals. This result demonstrates that the oil seal of this invention exhibits excellent resilience and can effectively adapt to operating conditions with large eccentricity and large vibration. Service Life Assessment:

[0021] After a 25,000 km road test, the oil seal of this invention showed no leakage, sand or other defects, no lip cracking, and wear less than 10%. In contrast, traditional oil seals typically experience wear exceeding 20% ​​under the same operating conditions, and their lips are prone to cracking. This result demonstrates that the oil seal of this invention has a longer service life.

[0022] Application scenarios and advantages:

[0023] This novel high-wear-resistant and high-resilience rotary shaft oil seal is suitable for various high-load, high-frequency vibration conditions, such as automotive engines, household motors, and food processing equipment. Compared with traditional oil seals, this novel oil seal has the following advantages:

[0024] High wear resistance: The design of inner and outer rings and reinforcing rings significantly improves the wear resistance of the oil seal and extends its service life.

[0025] High resilience: The spring steel wire design improves the resilience of the oil seal, enabling it to better adapt to working conditions with large eccentricity and large vibration.

[0026] Excellent sealing performance: The design and optimization of the lip ensure the sealing performance of the oil seal under various working conditions.

[0027] Corrosion Resistance: The chrome plating on the surface of the spring steel wire improves the corrosion resistance of the oil seal, further extending its service life. Conclusion: This novel high-wear-resistant, high-resilience rotary shaft oil seal, through optimized structural design and material selection, significantly improves the wear resistance, resilience, and service life of the oil seal. It performs excellently under various high-load, high-frequency vibration conditions and has broad application prospects.

Claims

1. A high wear resistant high resilience rotary shaft oil seal characterized by: The utility model provides a kind of ring, including outer ring, inner ring, connecting part, the outer ring and inner ring are respectively arranged on connecting part, annular groove is formed between the outer ring, inner ring and connecting part, the outer ring and connecting part position set up the reinforcing ring of section as L type, the reinforcing ring has opening on the top surface of connecting part.

2. The high wear resistant high resilience rotary shaft oil seal of claim 1, wherein: The outer wall of the inner ring is provided with a mounting groove.

3. The high wear resistant, high resilience rotary shaft oil seal of claim 2, wherein: A spring steel wire is arranged in the mounting groove.

4. The high wear resistant, high resilience rotary shaft oil seal of claim 3, wherein: The spring steel wire is made of SPCC material and has corrosion resistance on the surface.

5. The high wear resistant, high resilience rotary shaft oil seal of claim 1, wherein: The bottom surface of the inner ring is provided with a lip.

6. The high wear resistant high resilience rotary shaft oil seal of claim 4, wherein: A lubricating layer is arranged on the inner wall of the inner ring.

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