Impact-resistant cylindrical roller bearing

Abstract

The utility model relates to bearing field discloses an anti -impact cylindrical roller bearing, including the inner race, the inner race outside is equipped with a plurality of roll, the roll between adjacent is provided with the isolated block, the isolated block outside is equipped with the outer ring, the outer ring outside is fixedly connected with the rubber cover, the outer ring both sides are fixedly connected with the baffle, the inner race outside is equipped with the oil outlet, the inner race inside is equipped with the oil storage tank, the oil storage tank inside is connected with the sliding block of sliding, the sliding block outside is fixedly connected with four springs, the spring is away from the sliding block one end fixedly connected in the inner wall of oil storage tank, in the utility model, through the rubber cover of outer ring outside fixed connection, make cylindrical roller bearing initially have certain anti -impact ability, further through the high -strength alloy material of inner race, roll, isolated block and outer ring, make cylindrical roller bearing further have anti -impact ability, realized and made this cylindrical roller bearing anti -impact performance become the effect of excellent.

Description

Technical Field

[0001] This utility model relates to the field of bearings, and in particular to an impact-resistant cylindrical roller bearing. Background Technology

[0002] The emergence of cylindrical roller bearings stemmed from the demand for efficient load-bearing and low-friction transmission in mechanical rotating systems. Traditional sliding friction structures are prone to wear and have high energy consumption when subjected to large radial loads, while rolling friction bearings can significantly improve this problem. Cylindrical roller bearings were developed to meet the needs of large radial load scenarios. They are mainly used in equipment manufacturing industries that require large radial loads and high rotational accuracy, such as machine tool spindles, automotive transmissions, rolling mills, cranes, wind turbines, and construction machinery.

[0003] Existing cylindrical roller bearings are easily damaged by impacts during use, leading to frequent maintenance and reduced work efficiency. Furthermore, the service life of existing cylindrical roller bearings is generally short, and the internal lubricating oil is easily depleted. Therefore, an impact-resistant cylindrical roller bearing is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an impact-resistant cylindrical roller bearing, which aims to improve the problems of weak impact resistance and short service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An impact-resistant cylindrical roller bearing includes an inner ring, a plurality of rollers mounted on the outside of the inner ring, a spacer block disposed between adjacent rollers, an outer ring mounted on the outside of the spacer block, a rubber sleeve fixedly connected to the outside of the outer ring, and retaining rings fixedly connected to both sides of the outer ring.

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

[0008] An oil outlet is provided on the outside of the inner ring, and an oil storage tank is provided inside the inner ring. A slider is slidably connected inside the oil storage tank.

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

[0010] The slider is externally fixedly connected to four springs.

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

[0012] The end of the spring away from the slider is fixedly connected to the inner wall of the oil storage tank.

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

[0014] The inner ring is made of a high-strength alloy material.

[0015] As a further description of the above technical solution:

[0016] The roller material is a high-strength alloy material.

[0017] As a further description of the above technical solution:

[0018] The module is made of high-strength alloy material.

[0019] As a further description of the above technical solution:

[0020] The outer ring material is a high-strength alloy material.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the cylindrical roller bearing initially possesses a certain impact resistance through the rubber sleeve fixedly connected to the outer ring. Then, through the high-strength alloy materials of the inner ring, rollers, spacer blocks, and outer ring, the cylindrical roller bearing further possesses impact resistance, thus achieving the effect of making the cylindrical roller bearing have excellent impact resistance.

[0023] 2. In this utility model, the lubricating oil in the oil reservoir inside the inner ring flows out slowly when the bearing rotates, as the slider moves towards the outer wall due to centrifugal force. This lubricates the bearing and extends its service life. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of an impact-resistant cylindrical roller bearing proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the outer ring structure of an impact-resistant cylindrical roller bearing proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the slider of an impact-resistant cylindrical roller bearing proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the inner ring structure of an impact-resistant cylindrical roller bearing proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the oil reservoir structure of an impact-resistant cylindrical roller bearing proposed in this utility model.

[0029] Legend:

[0030] 1. Inner ring; 2. Roller; 3. Spacer block; 4. Outer ring; 5. Rubber sleeve; 6. Retaining ring; 7. Slider; 8. Oil outlet; 9. Oil reservoir; 10. Spring. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of an impact-resistant cylindrical roller bearing, comprising an inner ring 1, which is manufactured by integral forging and its outer surface is quenched and tempered at low temperature, resulting in very high hardness. Multiple rollers 2 are evenly installed around the outer edge of the inner ring 1 along the circumferential direction. A spacer block 3, which has a drum-shaped structure, is provided between adjacent rollers 2. An outer ring 4 is installed around the rollers 2, and a rubber sleeve 5 is fixedly connected to the outer ring 4 via a vulcanization process. The outer ring 4 has a diamond-shaped anti-slip texture distributed on its surface. Retaining rings 6 are fixedly connected to both sides of the outer ring 4 via interference fit, providing precise positioning during bearing rotation.

[0033] Reference Figures 4-5 The inner ring 1 has four oil outlets 8 equidistantly spaced along the axial direction on the outside. The inner ring 1 has an oil reservoir 9 coaxially arranged inside. The oil reservoir 9 is slidably connected to a slider 7. The oil reservoir 9 is filled with high-temperature resistant, high-viscosity synthetic lubricating oil.

[0034] Reference Figures 4-5 Four springs 10, made of beryllium bronze, are evenly distributed and fixedly connected to the outside of the slider 7 along the circumference. When the bearing rotates at high speed, the slider 7 overcomes the elastic force of the springs 10 and slides outward under the action of centrifugal force, so that an annular gap appears at the edge between the slider 7 and the inner wall of the oil reservoir 9. Under the action of pressure difference, lubricating oil flows out from the gap and is delivered to the surface of the roller 2 through the oil outlet 8 for lubrication.

[0035] Reference Figures 4-5 The end of the spring 10 away from the slider 7 is fixed to the inner wall of the oil reservoir 9. When the bearing stops rotating, the centrifugal force disappears, and the slider 7 quickly returns to its original position under the thrust of the spring 10, sticking tightly to the inner wall of the oil reservoir 9 to form a reliable sealing structure, effectively preventing lubricating oil leakage.

[0036] Reference Figures 1-3The inner ring 1 is made of a high-strength alloy material with the following composition: C: 0.45-0.55%, Si: 0.17-0.37%, Mn: 0.50-0.80%, Cr: 1.00-1.50%, Mo: 0.15-0.25%, Ni: 0.30-0.80%, with the balance being Fe and unavoidable impurities. After quenching and tempering, this material has a tensile strength ≥1000MPa and an impact toughness ≥60J / cm², exhibiting excellent impact resistance and fatigue life.

[0037] Reference Figures 1-3 The roller 2 is made of the same material as the inner ring 1 and is manufactured by cold heading process. After carburizing and quenching treatment, the surface hardness reaches HRC60-64 and the core hardness is HRC30-40. It can withstand contact stress of up to 2000MPa and is not prone to plastic deformation or fracture under strong impact load.

[0038] Reference Figures 1-3 The material of the isolation block 3 is also selected from the above-mentioned high-strength alloy and is made by precision casting process. The internal structure is dense and uniform. After surface nitriding treatment, the surface hardness is ≥900HV, which not only ensures sufficient strength and toughness, but also improves wear resistance.

[0039] Reference Figures 1-3 The outer ring 4 is made of the same material as the inner ring 1. It uses forgings as blanks and, after machining and heat treatment, has a yield strength ≥800MPa and an elastic modulus of 206GPa. It can effectively absorb energy when subjected to impact loads and avoid brittle fracture.

[0040] Working principle: When this impact-resistant cylindrical roller bearing is in operation, the inner ring 1, as the core rotating component, begins to rotate. Multiple rollers 2 mounted externally rotate under friction, converting the sliding friction between the inner ring 1 and the outer ring 4 into rolling friction, significantly reducing rotational resistance. The spacer blocks 3 between adjacent rollers 2, through close contact with the rollers 2, provide support and radial positioning, ensuring that the rollers 2 are evenly distributed in the circumferential direction and preventing skewing due to uneven force. The retaining rings 6 on both sides of the outer ring 4, through precise axial limiting, prevent axial movement of components such as the rollers 2 and spacer blocks 3 during rotation, ensuring the overall stability of the bearing operation. When the bearing is rotating at high speed, the slider 7 inside the oil reservoir 9 slides outward under the action of centrifugal force, overcoming the preload of the beryllium bronze spring 10. This creates an annular gap between the slider 7 and the inner wall of the oil reservoir 9. Under the action of the internal and external pressure difference, the high-temperature resistant synthetic lubricating oil filled in the oil reservoir 9 flows through this gap to the oil outlet 8, and is finally delivered to the contact surfaces of the roller 2 with the inner ring 1 and the outer ring 4, forming an oil film to achieve dynamic lubrication and effectively reduce wear between metal parts. When the bearing stops operating, the centrifugal force disappears, and the slider 7 quickly returns to its original position under the elastic force of the spring 10, tightly fitting against the inner wall of the oil reservoir 9. This surface contact forms a reliable seal, preventing lubricating oil leakage. When subjected to external impact loads, the rubber sleeve 5 on the outside of the outer ring 4 absorbs the impact energy through its own elastic deformation, playing a preliminary buffering role; at the same time, the high-strength alloy materials used in the inner ring 1, roller 2, spacer block 3 and outer ring 4, relying on their high tensile strength, yield strength and impact toughness, distribute the impact load evenly through the synergistic force distribution of the overall structure, avoiding component fracture or plastic deformation caused by local stress concentration, thereby achieving the bearing's impact resistance performance.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. An impact-resistant cylindrical roller bearing, comprising an inner ring (1), characterized in that: Multiple rollers (2) are installed on the outside of the inner ring (1), and an isolation block (3) is provided between adjacent rollers (2). An outer ring (4) is installed on the outside of the isolation block (3), and a rubber sleeve (5) is fixedly connected to the outside of the outer ring (4). Retaining rings (6) are fixedly connected to both sides of the outer ring (4).

2. The impact-resistant cylindrical roller bearing according to claim 1, characterized in that: The inner ring (1) has an oil outlet (8) on the outside and an oil storage tank (9) inside. The oil storage tank (9) is slidably connected to a slider (7).

3. The impact-resistant cylindrical roller bearing according to claim 2, characterized in that: The slider (7) is externally fixedly connected to four springs (10).

4. The impact-resistant cylindrical roller bearing according to claim 3, characterized in that: The end of the spring (10) away from the slider (7) is fixedly connected to the inner wall of the oil storage tank (9).

5. The impact-resistant cylindrical roller bearing according to claim 1, characterized in that: The inner ring (1) is made of a high-strength alloy material.

6. The impact-resistant cylindrical roller bearing according to claim 1, characterized in that: The roller (2) is made of a high-strength alloy material.

7. The impact-resistant cylindrical roller bearing according to claim 1, characterized in that: The isolation block (3) is made of high-strength alloy material.

8. The impact-resistant cylindrical roller bearing according to claim 1, characterized in that: The outer ring (4) is made of a high-strength alloy material.

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