High-temperature-resistant sealed crossed roller turntable bearing capable of preventing radial movement

Abstract

The utility model discloses a high-temperature-resistant sealed crossed roller turntable bearing capable of preventing radial movement, which comprises a bearing inner ring, a bearing outer ring is mounted on the outer peripheral surface of the bearing inner ring in a matched manner, a shell is mounted on the outer peripheral surface of the bearing outer ring in a matched manner, and a transmission shaft is mounted on the inner peripheral surface of the bearing inner ring in a matched manner. A plurality of rollers are annularly and crossly mounted between the bearing inner ring and the bearing outer ring, high-temperature-resistant sealing washers are mounted at the upper end and the lower end of the joint of the bearing inner ring and the bearing outer ring, and a transmission shaft positioning groove is formed in the inner circumferential surface of the bearing inner ring; according to the high-temperature-resistant sealed crossed roller turntable bearing capable of preventing radial movement, the crossed roller turntable bearing is provided with a transmission shaft positioning groove, an outer ring positioning groove, a shell positioning bulge and a transmission shaft positioning bulge, so that the radial movement of the bearing during use is conveniently prevented, and the rigidity of the bearing is increased; by arranging the high-temperature-resistant sealing gasket, the use temperature of the bearing is conveniently increased, the service life of the bearing is prolonged, and the safety of the bearing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turntable bearings, in particular to a high temperature resistant sealed cross roller turntable bearing capable of preventing radial movement. Background Art

[0002] The turntable shaft is usually composed of four parts: outer ring, inner ring, rolling element and cage. Usually, if the outer ring is toothed, the inner ring is fixed and the outer ring is driven to rotate by the reducer. If the inner ring is toothed, the outer ring is fixed and the inner ring is directly driven to rotate by the reducer. The existing crossed roller turntable bearings have the risk of radial movement during use, which affects the rigidity of the bearing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-temperature resistant sealed cross roller slewing bearing that prevents radial movement, which can effectively prevent the radial movement of the bearing, increase the rigidity of the bearing, and effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high-temperature resistant sealed crossed roller slewing bearing for preventing radial movement comprises a bearing inner ring, an outer bearing ring is mounted on the outer circumferential surface of the bearing inner ring, a housing is mounted on the outer circumferential surface of the bearing outer ring, a transmission shaft is mounted on the inner circumferential surface of the bearing inner ring, a plurality of rollers are mounted in a ring-shaped cross pattern between the bearing inner ring and the bearing outer ring, high-temperature resistant sealing gaskets are mounted on the upper and lower ends of the connection between the bearing inner ring and the bearing outer ring, a transmission shaft positioning groove is provided on the inner circumferential surface of the bearing inner ring, a transmission shaft positioning protrusion is provided on the circumferential surface of the transmission shaft and the transmission shaft is matched with the transmission shaft positioning groove, an outer ring positioning groove is provided on the outer circumferential surface of the bearing outer ring, and a housing positioning protrusion is provided on the inner side surface of the housing and the housing is matched with the outer ring positioning groove.

[0006] As a preferred technical solution of the utility model, the high temperature resistant sealing gasket adopts a fluororubber gasket.

[0007] As a preferred technical solution of the utility model, a plug cooperating with the roller is provided on the outer ring of the bearing.

[0008] As a preferred technical solution of the utility model, a connecting hole is provided between the outer ring of the bearing and the plug, and a tapered pin is installed in the connecting hole.

[0009] As a preferred technical solution of the utility model, the axial surfaces of the bearing inner ring and the bearing outer ring are annularly and evenly provided with a plurality of mounting holes.

[0010] As a preferred technical solution of the present utility model, the transmission shaft positioning groove and the outer ring positioning groove are both arc-shaped structures.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The cross roller slewing bearing is convenient for preventing radial movement of the bearing during use by arranging a transmission shaft locating groove, an outer ring locating groove, a housing locating protrusion and a transmission shaft locating protrusion, thereby increasing the bearing rigidity; and convenient for increasing the operating temperature of the bearing by arranging a high temperature resistant sealing gasket, thereby increasing the service life and safety of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the matching structure of the bearing inner ring and the bearing outer ring of the utility model.

[0015] Figure 3 This is a schematic diagram of the bearing assembly structure of the utility model.

[0016] In the figure: bearing inner ring 1, bearing outer ring 2, transmission shaft positioning groove 3, mounting hole 4, outer ring positioning groove 5, taper pin 6, plug 7, roller 8, housing 9, transmission shaft 10, housing positioning protrusion 11, transmission shaft positioning protrusion 12, high temperature resistant sealing gasket 13. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A high-temperature resistant sealed crossed roller slewing bearing for preventing radial movement comprises a bearing inner ring 1, a bearing outer ring 2 is mounted on the outer circumferential surface of the bearing inner ring 1, a housing 9 is mounted on the outer circumferential surface of the bearing outer ring 2, a transmission shaft 10 is mounted on the inner circumferential surface of the bearing inner ring 1, a plurality of rollers 8 are mounted in a ring-shaped cross pattern between the bearing inner ring 1 and the bearing outer ring 2, high-temperature resistant sealing gaskets 13 are mounted on the upper and lower ends of the connection between the bearing inner ring 1 and the bearing outer ring 2, a transmission shaft positioning groove 3 is provided on the inner circumferential surface of the bearing inner ring 1, a transmission shaft positioning protrusion 12 matching the transmission shaft positioning groove 3 is provided on the circumferential surface of the transmission shaft 10, an outer ring positioning groove 5 is provided on the outer circumferential surface of the bearing outer ring 2, and a housing positioning protrusion 11 matching the outer ring positioning groove 5 is provided on the inner side surface of the housing 9.

[0020] The high temperature resistant sealing gasket 13 adopts a fluororubber gasket, the use temperature of which is as high as 250°C, far exceeding the use temperature of the bearing, thereby increasing the service life and safety of the bearing.

[0021] A plug 7 cooperating with the roller 8 is provided on the bearing outer ring 2 .

[0022] A connecting hole is provided between the bearing outer ring 2 and the plug 7, and a tapered pin 6 is installed in the connecting hole.

[0023] The axial surfaces of the bearing inner ring 1 and the bearing outer ring 2 are evenly provided with a plurality of mounting holes 4 in an annular shape.

[0024] The transmission shaft positioning groove 3 and the outer ring positioning groove 5 are both arc-shaped structures.

[0025] By providing the outer ring positioning groove 5 and the housing positioning protrusion 11, it is convenient to coordinate the installation of the bearing outer ring 2 and the housing 9. By providing the transmission shaft positioning groove 3 and the transmission shaft positioning protrusion 12, it is convenient to coordinate the installation of the bearing inner ring 1 and the transmission shaft 10. The outer ring positioning groove 5 and the housing positioning protrusion 11 as well as the transmission shaft positioning groove 3 and the transmission shaft positioning protrusion 12 can effectively prevent radial movement of the bearing and increase the bearing rigidity.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant sealed crossed roller slewing bearing for preventing radial movement, comprising a bearing inner ring (1), a bearing outer ring (2) being mounted on the outer circumferential surface of the bearing inner ring (1), a housing (9) being mounted on the outer circumferential surface of the bearing outer ring (2), a transmission shaft (10) being mounted on the inner circumferential surface of the bearing inner ring (1), a plurality of rollers (8) being mounted in an annular cross pattern between the bearing inner ring (1) and the bearing outer ring (2), characterized in that: High temperature resistant sealing gaskets (13) are installed at the upper and lower ends of the connection between the bearing inner ring (1) and the bearing outer ring (2); a transmission shaft positioning groove (3) is provided on the inner circumferential surface of the bearing inner ring (1); a transmission shaft positioning protrusion (12) matching with the transmission shaft positioning groove (3) is provided on the circumferential surface of the transmission shaft (10); an outer ring positioning groove (5) is provided on the outer circumferential surface of the bearing outer ring (2); and a housing positioning protrusion (11) matching with the outer ring positioning groove (5) is provided on the inner side surface of the housing (9).

2. The high temperature resistant sealed cross roller slewing bearing preventing radial movement according to claim 1, characterized in that: The high temperature resistant sealing gasket (13) is a fluororubber gasket.

3. The high temperature resistant sealed cross roller slewing bearing preventing radial movement according to claim 1, characterized in that: The bearing outer ring (2) is provided with a plug (7) that cooperates with the roller (8).

4. The high temperature resistant sealed cross roller slewing bearing preventing radial movement according to claim 1, characterized in that: A connecting hole is provided between the bearing outer ring (2) and the plug (7), and a tapered pin (6) is installed in the connecting hole.

5. The high temperature resistant sealed cross roller slewing bearing preventing radial movement according to claim 1, characterized in that: The axial surfaces of the bearing inner ring (1) and the bearing outer ring (2) are evenly provided with a plurality of mounting holes (4) in an annular shape.

6. The high temperature resistant sealed cross roller slewing bearing preventing radial movement according to claim 1, characterized in that: The transmission shaft positioning groove (3) and the outer ring positioning groove (5) are both arc-shaped structures.

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