Multi-row combined split bearing

Abstract

The utility model relates to a kind of multi-row combined type connected bearing, it is to solve the technical problem of less similar connected bearing product using inner shaft as inner ring simultaneously, less three or four multi-row multi-group steel ball structure design.The inner shaft of the connected bearing is integrally formed with inner ring, the outer diameter of the steel ball of inner shaft and the inner diameter of corresponding outer ring are respectively provided with channel, three or four steel balls are provided between the channel of inner shaft and the channel of outer ring;Its gist is that the two rows of steel balls between the two rows of channels of the mounting end side of the inner shaft and the first outer ring, the outer diameter of the other side of the inner shaft is provided with inner sleeve, two rows or one row of steel balls between the two rows or one row of channels of the outer diameter of inner sleeve and the second outer ring, the opposite end of the first outer ring and the second outer ring is adhered end face and outer diameter alignment, and sealing ring is respectively provided in the other end dustproof groove of the first outer ring and the second outer ring.The above-mentioned inner sleeve and corresponding steel ball, and the second outer ring form single-row or double-row bearing and are pressed into the one end of inner shaft tail portion.

Description

Technical Field

[0001] This utility model relates to an integrated bearing, specifically a multi-row combined integrated bearing. Background Technology

[0002] Bearings are essential components used to support the rotation of machinery, reducing the coefficient of friction during movement and ensuring rotational accuracy. Integrated bearings primarily refer to bearings where the shaft portion in the middle of the inner ring is integrated with the inner ring itself. Examples include Chinese patent document ZL200820303905.6, authorized on December 9, 2009, entitled "Integrated Diagonal Contact Bearing"; and another example is Chinese patent application 201721259809.1, authorized on April 10, 2018, entitled "An Eccentric Shaft Integrated Bearing for Guide Rails." However, these integrated bearings and similar products rarely employ a three- or four-row multi-group ball bearing structure design, resulting in limited load-bearing capacity. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a multi-row combined integrated bearing in the field, thereby solving the technical problems of existing similar integrated bearing products rarely using an inner shaft as the inner ring and rarely using a three- or four-row multi-group steel ball structure to improve its axial load, radial load, and overturning moment. This objective is achieved through the following technical solution.

[0004] A multi-row combined integrated bearing is disclosed, wherein the inner shaft and inner ring are integrally formed. The diameter of the mounting end of one end of the inner shaft and the diameter of the symmetrical other end are smaller than the diameter of the steel ball section of the inner shaft. The outer diameter of the steel ball section of the inner shaft and the corresponding inner diameter of the outer ring are respectively provided with grooves. Three or four rows of steel balls are arranged between the grooves of the inner shaft and the grooves of the outer ring. The key structural design features are that two rows of steel balls are arranged between the two rows of grooves on one side of the mounting end of the inner shaft and the first outer ring, and an inner sleeve is provided on the outer diameter of the other side of the inner shaft. Two or one rows of grooves on the outer diameter of the inner sleeve are arranged between the two rows of grooves and the second outer ring, and two or one row of steel balls are arranged between the two rows of grooves on the outer diameter of the inner sleeve and the second outer ring. The opposite end faces of the first outer ring and the second outer ring are aligned with their outer diameters. Sealing rings are respectively provided at the dustproof grooves of the other ends of the first outer ring and the second outer ring. When four rows of steel balls are provided, the steel balls are simultaneously arranged in one retainer. When three rows of steel balls are provided, two rows of steel balls on one side are simultaneously arranged in one retainer, and one row of steel balls on the other side is simultaneously arranged in another retainer. Thus, a single-row or double-row bearing, consisting of an inner sleeve, steel balls, and a second outer ring, is pressed into one end of the inner shaft, while the outer diameter of the second outer ring is aligned with the outer diameter of the first outer ring. The two outer rings on the opposite end faces of the first and second outer rings are provided with dustproof grooves and sealing rings, or are provided with cylindrical openings, as needed. Simultaneously, the single-row or double-row bearing, consisting of the inner sleeve, corresponding steel balls, and the second outer ring, is pressed into one end of the inner shaft.

[0005] The inner shaft is a slotted inner shaft, and the mounting end of the other end of the inner shaft is provided with a smooth circular slot with a raised or recessed circumferential surface.

[0006] The inner shaft is a threaded inner shaft, and the mounting end of the other end of the inner shaft is provided with an outer diameter thread. The end face of the steel ball of the inner shaft is provided with an internal hexagonal hole.

[0007] The inner shaft is a smooth circular inner shaft, and the mounting end of the other end of the inner shaft is a smooth circular end with a flat keyway on one side of its circumference.

[0008] This utility model has a reasonable structural design, diverse structural forms, good stability and balance, low operating noise, low production cost, convenient assembly, and long service life. In particular, it has high axial load, radial load, and overturning moment. It is suitable for use as a multi-row combined integrated bearing and a further improvement of similar products. Attached Figure Description

[0009] Figure 1 This is a cross-sectional structural schematic diagram of Embodiment 1 of the present invention, showing a double-row bearing press-fitted into a smooth circular slotted double-row integral bearing.

[0010] Figure 2 This is a cross-sectional structural schematic diagram of Embodiment 2 of this utility model, showing a single-row bearing press-fitted into a smooth circular slotted double-row continuous bearing.

[0011] Figure 3 This is a cross-sectional structural schematic diagram of Embodiment 3 of this utility model, showing a double-row bearing press-fitted with a threaded double-row integral bearing.

[0012] Figure 4 This is a cross-sectional structural schematic diagram of Embodiment 4 of this utility model, showing a single-row bearing press-fitted with a threaded double-row integral bearing.

[0013] Figure 5 This is a cross-sectional structural schematic diagram of Embodiment 5 of this utility model, showing a double-row bearing pressed into a smooth circular double-row integral bearing.

[0014] Figure 6 This is a cross-sectional structural schematic diagram of Embodiment Six of this utility model, showing a single-row bearing pressed into a smooth circular double-row integral bearing.

[0015] The attached figures are numbered and named as follows: 1. Slotted inner shaft, 2. Steel ball, 3. First outer ring, 4. Second outer ring, 5. Retainer, 6. Inner sleeve, 7. Threaded inner shaft, 8. Plain inner shaft. Implementation

[0016] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-6As shown, the inner shaft and inner ring of the integrated bearing are integrally formed. The diameter of the mounting end of one end of the inner shaft and the diameter of the symmetrical other end are smaller than the diameter of the steel ball 2 on the inner shaft. The outer diameter of the steel ball on the inner shaft and the corresponding inner diameter of the outer ring are respectively provided with grooves. Three or four rows of steel balls are provided between the grooves of the inner shaft and the grooves of the outer ring. Two rows of steel balls are provided between the two rows of grooves on one side of the mounting end of the inner shaft and the first outer ring 3. The outer diameter of the other side of the inner shaft is provided with an inner sleeve 6. Two rows or one row of grooves on the outer diameter of the inner sleeve are provided between the two rows of grooves and the second outer ring 4. The opposite end faces of the first outer ring and the second outer ring are aligned with the outer diameters. Sealing rings are provided at the dustproof grooves at the other ends of the first outer ring and the second outer ring. When four rows of steel balls are provided, the steel balls are simultaneously placed in a retainer 5. When three rows of steel balls are provided, two rows of steel balls on one side are simultaneously placed in a retainer, and one row of steel balls on the other side is simultaneously placed in another retainer.

[0017] Based on the above structural characteristics, such as Figures 1-2 In the first and second embodiments shown, the inner shaft is a slotted inner shaft 1, and the mounting end of the other end of the inner shaft has a smooth circular slot with a raised or recessed circumferential surface. Figures 3-4 In embodiments three and four, the inner shaft is a threaded inner shaft 7. The mounting end of the inner shaft has an external diameter thread, and the end face of the steel ball on one end of the inner shaft has an internal hexagonal hole. Figures 5-6 In the embodiments shown in Example 5 and Example 6, the inner shaft is a smooth circular inner shaft 8, and the mounting end of the other end of the inner shaft is provided with a smooth circular end with a flat keyway on one side of the circumference.

[0018] In summary, the inner shaft of this integrated bearing serves as the inner ring. A portion of its outer diameter surface has two grooves. One of the grooves near the two smaller outer diameters of the inner shaft has a full-ball notch or may not have a notch. One end has a smaller outer diameter for press-fitting single-row or double-row bearings, while the other end has a smaller outer diameter section with a round bar, threaded, or slotted design for connecting transmission components. The outer ring is a double-groove outer ring with a dustproof groove. One groove has a full-ball notch or may not have a notch.

[0019] When assembling this integrated bearing: first, fill the notched groove of the inner shaft (inner ring) and the notched groove of the outer ring (first outer ring) with steel balls, and fill the other groove with steel balls and a retainer, or fill both grooves with steel balls and a retainer, and install a sealing ring on one side; then press a single-row bearing or a double-row bearing into the small outer circle of the inner shaft to form a set of three-row or four-row integrated bearings.

[0020] Thus, this arrangement of three or four rows of bearings enables individual bearings to withstand greater axial loads, radial loads, and overturning moments, while achieving extreme miniaturization and weight reduction of the product's overall dimensions.

Claims

1. A multi-row combined integral bearing, wherein the inner shaft and inner ring of the integral bearing are integrally formed, the diameter of the mounting end at one end of the inner shaft and the diameter of the symmetrical other end are respectively smaller than the diameter at the steel ball (2) of the inner shaft, and the outer diameter of the steel ball at the inner shaft and the corresponding inner diameter of the outer ring are respectively provided with grooves, and three or four rows of steel balls are provided between the grooves of the inner shaft and the grooves of the outer ring; characterized in that Two rows of steel balls (2) are provided between the two rows of grooves on one side of the inner shaft and the first outer ring (3). An inner sleeve (6) is provided on the outer diameter of the other side of the inner shaft. Two rows or one row of grooves on the outer diameter of the inner sleeve are provided between the second outer ring (4). The opposite end faces of the first outer ring and the second outer ring are aligned with the outer diameters. Sealing rings are provided at the dustproof grooves at the other ends of the first outer ring and the second outer ring respectively. When four rows of steel balls are provided, the steel balls are simultaneously placed in a retainer (5). When three rows of steel balls are provided, two rows of steel balls on one side are simultaneously placed in a retainer, and one row of steel balls on the other side is simultaneously placed in another retainer.

2. The multi-row combined integral bearing according to claim 1, characterized in that... The inner shaft is a slotted inner shaft (1), and the mounting end of the other end of the inner shaft is provided with a smooth circular slot with a raised or recessed circumferential surface.

3. The multi-row combined integral bearing according to claim 1, characterized in that... The inner shaft is a threaded inner shaft (7), and the mounting end of the other end of the inner shaft is provided with an outer diameter thread. The end face of the steel ball of the inner shaft is provided with an internal hexagonal hole.

4. The multi-row combined integral bearing according to claim 1, characterized in that... The inner shaft is a smooth circular inner shaft (8), and the mounting end of the other end of the inner shaft is a smooth circular end with a flat keyway on one side of the circumference.

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