Crossed roller bearing

Abstract

The utility model discloses a crossed roller bearing, which belongs to the technical field of bearings and comprises a bearing inner ring and a bearing outer ring, the bearing inner ring is located on the inner side of the bearing outer ring, and a roller rolling cavity and a pin roller rolling cavity are formed between the bearing inner ring and the bearing outer ring; the plurality of rollers are mounted in the roller rolling cavity, and the adjacent rollers are arranged in a crossed manner; and the multiple pin rollers are installed in the pin roller rolling cavities, and the axes of the pin rollers are parallel to the axis of the bearing inner ring. The radial and axial bearing capacity can be improved through cooperative work of the rollers and the pin rollers, and then the bearing capacity of the whole bearing is enhanced, so that the bearing is more suitable for bearing a high-load working environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing technical field, concretely relates to a cross roller bearing. BACKGROUND

[0002] Cross roller bearing is widely used in robot joint, the existing cross roller bearing includes bearing outer ring, bearing inner ring and a plurality of cross rollers, a plurality of cross rollers are installed between bearing outer ring and bearing inner ring, such as the cross roller bearing of patent disclosure CN221482403U.

[0003] But the above-mentioned cross roller bearing's loadability is general, cannot satisfy the demand of robot joint. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a cross roller bearing can increase the loadability of bearing to meet the work requirement.

[0005] To realize above-mentioned purpose, the utility model provides the following technical scheme: a cross roller bearing, including:

[0006] Bearing inner ring;

[0007] Bearing outer ring, bearing inner ring is located at the inside of bearing outer ring, and the bearing inner ring and bearing outer ring form the roller rolling cavity and the roller rolling cavity between them;

[0008] A plurality of rollers, a plurality of the roller is installed in the roller rolling cavity, and the adjacent roller is crossed and arranged;

[0009] A plurality of rollers, a plurality of the roller is installed in the roller rolling cavity, and the adjacent roller is crossed and arranged;

[0010] Further, the roller rolling cavity includes outer V type ring groove and inner V type ring groove, the outer V type ring groove is arranged on the inner wall of the bearing outer ring, and the inner V type ring groove is arranged on the outer wall of the bearing inner ring, and the roller is installed between the outer V type ring groove and the inner V type ring groove.

[0011] Further, the roller rolling cavity includes outer ring groove and inner ring groove, the outer ring groove is arranged on the inner wall of the bearing outer ring, and the inner ring groove is arranged on the outer wall of the bearing inner ring, and the outer ring groove includes outer ring groove bottom and outer ring groove side, and the inner ring groove includes inner ring groove bottom and inner ring groove side, the outer ring groove side and the inner ring groove side are oppositely arranged, the outer ring groove bottom and the inner ring groove bottom are parallelly arranged, the outer wall of the roller is in abutment with the outer ring groove side and the inner ring groove side, and the two end faces of the roller are in abutment with the outer ring groove bottom and the inner ring groove bottom respectively.

[0012] Furthermore, a sealing ring is fixed at the opening of the outer annular groove.

[0013] Furthermore, both ends of the outer ring of the bearing are provided with external threaded holes.

[0014] Furthermore, one end of the inner ring of the bearing is provided with an internal threaded hole.

[0015] Furthermore, an outer clearance ring groove is provided at the connection between the bottom surface of the outer ring groove and the side surface of the outer ring groove, and an inner clearance ring groove is provided at the connection between the bottom surface of the inner ring groove and the side surface of the inner ring groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The coordinated work of rollers and rollers can improve the radial and axial load capacity, thereby enhancing the overall load capacity of the bearing and making it more suitable for high-load working environments.

[0018] (2) The roller can rotate between the outer ring groove and the inner ring groove. The outer ring groove and the inner ring groove adopt this structure, which makes the processing very simple;

[0019] (3) By setting external threaded holes and internal threaded holes, the outer ring and inner ring of the bearing can be connected to the components that need to be connected by bolts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross roller bearing of this utility model;

[0021] Figure 2 for Figure 1 Front view;

[0022] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0023] Figure 4 for Figure 3 A magnified view of a section at point I;

[0024] Figure 5 for Figure 1 Exploded view.

[0025] In the diagram: 1. Inner ring of bearing; 2. Outer ring of bearing; 3. Roller rolling cavity; 4. Roller rolling cavity; 5. Roller; 6. Roller; 7. Outer V-ring groove; 8. Inner V-ring groove; 9. Outer ring groove; 10. Inner ring groove; 11. Bottom surface of outer ring groove; 12. Side surface of outer ring groove; 13. Bottom surface of inner ring groove; 14. Side surface of inner ring groove; 15. Sealing ring; 16. External threaded hole; 17. Internal threaded hole; 18. Outer clearance ring groove; 19. Inner clearance ring groove; 20. Bottom clearance groove; 21. Outer bottom clearance ring groove; 22. Inner bottom clearance ring groove. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5 This utility model provides a cross roller bearing technical solution.

[0028] A crossed roller bearing, comprising:

[0029] Inner ring of bearing 1;

[0030] The bearing outer ring 2 and the bearing inner ring 1 are located inside the bearing outer ring 2. A roller rolling cavity 3 and a roller rolling cavity 4 are formed between the bearing inner ring 1 and the bearing outer ring 2.

[0031] Several rollers 5 are installed inside the roller rolling cavity 3, with adjacent rollers 5 arranged in a staggered manner;

[0032] Several rollers 6 are installed inside the roller rolling cavity 4, and the axis of the rollers 6 is set parallel to the axis of the inner ring 1 of the bearing.

[0033] By introducing roller 6, the synergistic work of roller 5 and roller 6 can improve the radial and axial load-bearing capacity, thereby enhancing the overall load-bearing capacity of the bearing and making it more suitable for high-load working environments.

[0034] like Figure 4 As shown, the roller rolling cavity 3 includes an outer V-shaped annular groove 7 and an inner V-shaped annular groove 8. The outer V-shaped annular groove 7 is disposed on the inner wall of the outer ring 2 of the bearing, and the inner V-shaped annular groove 8 is disposed on the outer wall of the inner ring 1 of the bearing. The roller 5 is installed between the outer V-shaped annular groove 7 and the inner V-shaped annular groove 8. The roller 5 can roll between the outer V-shaped annular groove 7 and the inner V-shaped annular groove 8. The bottom of the outer V-shaped annular groove 7 is provided with an outer bottom clearance groove 21, and the bottom of the inner V-shaped annular groove 8 is provided with an inner bottom clearance groove 22.

[0035] like Figure 4 As shown, the roller rolling cavity 4 includes an outer ring groove 9 and an inner ring groove 10. The outer ring groove 9 is disposed on the inner wall of the outer ring 2 of the bearing, and the inner ring groove 10 is disposed on the outer wall of the inner ring 1 of the bearing. The outer ring groove 9 includes an outer ring groove bottom surface 11 and an outer ring groove side surface 12, and the inner ring groove 10 includes an inner ring groove bottom surface 13 and an inner ring groove side surface 14. The outer ring groove side surface 12 and the inner ring groove side surface 14 are arranged opposite to each other, and the outer ring groove bottom surface 11 and the inner ring groove bottom surface 13 are arranged parallel to each other. The outer wall of the roller 6 abuts against the outer ring groove side surface 12 and the inner ring groove side surface 14, and the two end faces of the roller 6 abut against the outer ring groove bottom surface 11 and the inner ring groove bottom surface 13, respectively. The roller 6 can rotate between the outer ring groove 9 and the inner ring groove 10. The roller can restrict the axial movement between the outer ring and the inner ring of the bearing, so that no additional limiting is required at the roller.

[0036] like Figure 4 As shown, an outer clearance ring groove 18 is provided at the connection between the bottom surface 11 and the side surface 12 of the outer ring groove, and an inner clearance ring groove 19 is provided at the connection between the bottom surface 13 and the side surface 14 of the inner ring groove. A bottom clearance groove 20 is provided at the bottom of the bottom surface 11 of the outer ring groove. This can prevent the outer edge of the end of the roller 6 from contacting the corner of the roller rolling cavity 4, making the rolling smoother.

[0037] like Figure 4 As shown, a sealing ring 15 is fixed at the opening of the outer ring groove 9, which can increase the sealing between the inner ring 1 and the outer ring 2 of the bearing at the opening end of the outer ring groove 9.

[0038] Both ends of the bearing outer ring 2 are provided with external threaded holes 16, and one end of the bearing inner ring 1 is provided with an internal threaded hole 17. By providing external threaded holes 16 and internal threaded holes 17, the bearing outer ring 2 and bearing inner ring 1 can be connected to the components that need to be connected by bolts.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crossed roller bearing, characterized in that, include: Inner ring of bearing; The bearing outer ring, the bearing inner ring is located inside the bearing outer ring, and a roller rolling cavity and a roller rolling cavity are formed between the bearing inner ring and the bearing outer ring; A plurality of rollers are installed in the roller rolling cavity, with adjacent rollers arranged in a staggered manner; A plurality of rollers are mounted in the roller rolling cavity, and the axis of the rollers is arranged parallel to the axis of the inner ring of the bearing.

2. The crossed roller bearing according to claim 1, characterized in that, The roller rolling cavity includes an outer V-shaped annular groove and an inner V-shaped annular groove. The outer V-shaped annular groove is disposed on the inner wall of the outer ring of the bearing, and the inner V-shaped annular groove is disposed on the outer wall of the inner ring of the bearing. The roller is installed between the outer V-shaped annular groove and the inner V-shaped annular groove.

3. The crossed roller bearing according to claim 1, characterized in that, The roller rolling cavity includes an outer ring groove and an inner ring groove. The outer ring groove is disposed on the inner wall of the outer ring of the bearing, and the inner ring groove is disposed on the outer wall of the inner ring of the bearing. The outer ring groove includes a bottom surface and a side surface, and the inner ring groove includes a bottom surface and a side surface. The side surface of the outer ring groove and the side surface of the inner ring groove are disposed opposite to each other, and the bottom surface of the outer ring groove and the bottom surface of the inner ring groove are disposed parallel to each other. The outer wall of the roller abuts against the side surface of the outer ring groove and the side surface of the inner ring groove, and the two end faces of the roller abut against the bottom surface of the outer ring groove and the bottom surface of the inner ring groove, respectively.

4. A crossed roller bearing according to claim 3, characterized in that, A sealing ring is fixed at the opening of the outer annular groove.

5. A crossed roller bearing according to claim 1, characterized in that, Both ends of the outer ring of the bearing are provided with external threaded holes.

6. A crossed roller bearing according to claim 1, characterized in that, One end of the inner ring of the bearing is provided with an internal threaded hole.

7. A crossed roller bearing according to claim 3, characterized in that, An outer clearance ring groove is provided at the connection between the bottom surface of the outer ring groove and the side surface of the outer ring groove, and an inner clearance ring groove is provided at the connection between the bottom surface of the inner ring groove and the side surface of the inner ring groove.

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