A crossed taper roller bearing

Abstract

The utility model provides a kind of crossed conical roller bearing, including outer ring, inner ring, conical roller, insulating block and extension block;The outer diameter end surface of inner ring and the inner diameter end surface of outer ring are equipped with V-shaped raceway, conical roller is arranged in the raceway between outer ring and inner ring, conical roller is arranged in two columns, and adjacent conical roller is arranged in 90 ° cross arrangement;Insulating block is equipped between adjacent conical roller;The small end surface of conical roller is equipped with recess, and extension block is inserted in recess, and the end of extension block away from conical roller is equipped with spherical surface structure, and spherical surface structure is contacted with the raceway of inner ring;Make it can be through the roller limiting structure design of extension block, and the problem of roller hunting, affecting bearing running accuracy is well solved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and in particular to a cross tapered roller bearing. Background Technology

[0002] Current crossed tapered roller bearings mostly use various types of spacers or cages to isolate the rollers in the circumferential direction, but do not limit the rollers in the length direction. Therefore, during the operation of the bearing, there is a phenomenon of the rollers moving up and down along the length of the raceway, which has a certain impact on the bearing's operating accuracy. Utility Model Content

[0003] In view of the above problems, the purpose of this application is to provide a cross tapered roller bearing that can effectively solve the problem of roller movement affecting bearing operating accuracy by adopting an extension block as a roller limiting structure design.

[0004] To achieve some or all of the above objectives or other objectives, this application provides the following technical solution: a crossed tapered roller bearing, comprising an outer ring, an inner ring, tapered rollers, a spacer block, and an extension block; both the outer diameter end face of the inner ring and the inner diameter end face of the outer ring are provided with V-shaped raceways; the tapered rollers are disposed in the raceways between the outer ring and the inner ring, the tapered rollers are arranged in two rows, and adjacent tapered rollers are arranged at a 90° angle; a spacer block is installed between adjacent tapered rollers; the small end face of the tapered roller is provided with a cavity, and an extension block is inserted into the cavity; the end of the extension block away from the tapered roller is provided with a spherical structure, and the spherical structure contacts the raceway of the inner ring.

[0005] Furthermore, the extension block has a cylindrical boss at one end near the tapered roller, and the recess matches the cylindrical boss.

[0006] Furthermore, a gap is provided between the end face of the cylindrical boss and the end face of the recess.

[0007] Furthermore, the inner ring has a split structure, consisting of an upper inner ring and a lower inner ring; the spherical surfaces of two adjacent extension blocks face the raceway of the upper inner ring and the raceway of the lower inner ring, respectively.

[0008] Furthermore, the adjacent extension blocks are arranged at a 90° angle.

[0009] Furthermore, the spherical structure is tangentially fitted to the raceway of the inner ring.

[0010] Furthermore, the isolation block is a circular structure used to isolate adjacent tapered rollers.

[0011] Furthermore, the extension block is made of engineering plastic or copper alloy.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By applying the extension block as a roller limiting structure, the problem of rollers moving up and down along the length of the raceway is solved, greatly improving the bearing's operating accuracy. 2. The spherical structure design at one end of the extension block can achieve tangential and automatic positioning with the raceway of the upper or lower inner ring through structural design, ensuring the limiting of the roller's length and guaranteeing the roller's load-bearing length. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is the front view of the extended block; Figure 4 This is a top view of the extended block; Figure 5 This is a schematic diagram of the tapered roller structure; Figure 6 This is a schematic diagram of the external structure of this utility model; Figure 7 This is a schematic diagram of the structure of this utility model excluding the inner ring; Figure 8 This is a schematic diagram of the structure of this utility model excluding the inner and outer rings; Figure 9 for Figure 8 A magnified view of a portion of the image; Figure 10 This is a sectional view of the inner and outer rings; In the diagram: 1. Outer ring, 2. Conical roller, 3. Recess, 4. Upper inner ring, 5. Lower inner ring, 6. Spacer block, 7. Extension block, 8. Spherical structure, 9. Cylindrical boss. Detailed Implementation

[0014] To make the structure and function of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1

[0015] See appendix Figure 1-10A crossed tapered roller bearing includes an outer ring 1, an inner ring, tapered rollers 2, a spacer block 6, and an extension block 7. Both the outer diameter end face of the inner ring and the inner diameter end face of the outer ring 1 are provided with V-shaped raceways. The tapered rollers 2 are disposed in the raceway between the outer ring 1 and the inner ring, arranged in two rows with adjacent tapered rollers 2 arranged at a 90° angle. A spacer block 6 is installed between adjacent tapered rollers 2. A recess 3 is provided on the small end face of each tapered roller 2, and an extension block 7 is inserted into the recess 3. The end of the extension block 7 away from the tapered roller 2 is provided with a spherical structure 8, which contacts the raceway of the inner ring.

[0016] The extension block 7 has a cylindrical boss 9 at one end near the tapered roller 2, and the recess 3 matches the cylindrical boss 9.

[0017] A gap is provided between the end face of the cylindrical boss 9 and the end face of the recess 3.

[0018] The inner ring has a split structure, consisting of an upper inner ring 4 and a lower inner ring 5; the spherical surfaces of two adjacent extension blocks 7 face the raceway of the upper inner ring 4 and the raceway of the lower inner ring 5, respectively.

[0019] The adjacent extension blocks 7 are arranged at a 90° angle.

[0020] The spherical structure 8 is tangentially fitted to the raceway of the inner ring.

[0021] The isolation block 6 is a circular structure used to isolate adjacent tapered rollers 2.

[0022] The extension block 7 is made of engineering plastics or copper alloys, etc. Example 2

[0023] Other technical features are the same as in Example 1.

[0024] The outer ring has a split structure, while the inner ring has an integrated structure.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A crossed tapered roller bearing, characterized in that: It includes an outer ring, an inner ring, tapered rollers, spacers, and extension blocks; both the outer diameter end face of the inner ring and the inner diameter end face of the outer ring are provided with V-shaped raceways; the tapered rollers are arranged in the raceways between the outer and inner rings, and the tapered rollers are arranged in two rows, with adjacent tapered rollers arranged at 90° angles; spacers are installed between adjacent tapered rollers; the small end face of the tapered rollers is provided with a cavity, and an extension block is inserted into the cavity; the end of the extension block away from the tapered rollers is provided with a spherical structure, and the spherical structure is in contact with the raceway of the inner ring.

2. The crossed tapered roller bearing according to claim 1, characterized in that: The extension block has a cylindrical boss at one end near the tapered roller, and the recess matches the cylindrical boss.

3. The crossed tapered roller bearing according to claim 2, characterized in that: A gap is provided between the end face of the cylindrical boss and the end face of the recess.

4. The crossed tapered roller bearing according to claim 1, characterized in that: The inner ring has a split structure, consisting of an upper inner ring and a lower inner ring; the spherical surfaces of two adjacent extension blocks face the raceway of the upper inner ring and the raceway of the lower inner ring, respectively.

5. A crossed tapered roller bearing according to claim 1, characterized in that: The adjacent extension blocks are arranged at a 90° angle.

6. A crossed tapered roller bearing according to claim 1, characterized in that: The spherical structure is tangentially fitted to the raceway of the inner ring.

7. A crossed tapered roller bearing according to claim 1, characterized in that: The isolation block is a circular structure used to isolate adjacent tapered rollers.

8. A crossed tapered roller bearing according to claim 1, characterized in that: The extension block is made of engineering plastic or copper alloy.

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