Novel external tooth type crossed roller slewing bearing

Abstract

The utility model relates to the technical field of slewing bearings, and discloses a novel outer tooth type crossed roller slewing bearing which comprises an outer ring, an inner ring, rolling grooves, rollers and an installation gear sleeve, outer teeth are integrally formed on the periphery of the installation gear sleeve, a plurality of sets of installation clamping grooves are formed in the periphery of the outer ring, and installation clamping pieces are installed on the inner side of the installation gear sleeve. After the outer ring and the inner ring are assembled, the installation tooth sleeve can be in sliding installation and butt joint with an installation clamping groove in the outer ring through an installation clamping piece on the inner side of the installation tooth sleeve, and then a fixing bolt is in threaded connection with a communication screw groove in the installation clamping piece. And the bottom of the fixing bolt can be in threaded locking with the communicating screw groove in the outer ring, and the dismounting is similar, so that the outer teeth on the periphery of the mounting gear sleeve and the outer ring can be conveniently and quickly dismounted and used, the outer ring and the inner ring do not need to be integrally dismounted and mounted, and the practical effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to slewing ring technical field especially relates to a novel external tooth type crossed roller slewing ring. BACKGROUND

[0002] The current single-row crossed roller type slewing ring is mostly composed of two races, compact structure, high manufacturing precision, small assembly gap, high installation precision requirement, crossed arrangement of rollers, simultaneous bearing of axial force, tipping moment and large radial force, and is widely used in transportation, engineering machinery and military products.

[0003] The existing external tooth type crossed roller slewing ring is integrally formed between the shaft seat external tooth and the outer shaft seat during use, and the external tooth of the shaft seat is abraded when meshing with external mechanical parts, so that the outer shaft seat and the inner shaft seat need to be disassembled during subsequent replacement and maintenance of the shaft seat external tooth, and the rollers need to be disassembled and taken out one by one, resulting in a complicated overall replacement process and low practicability. UTILITY MODEL CONTENTS

[0004] The utility model mainly solves the technical problems existing in the prior art, and provides a novel external tooth type crossed roller slewing ring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme, a novel external tooth type crossed roller slewing ring, which comprises an outer ring, an inner ring, a roller groove and a roller, the outer ring and the inner ring are supported and cooperated by a plurality of rollers in cross rolling mode, an installation tooth sleeve is movably assembled on the outer part of the outer ring, an external tooth is integrally formed on the periphery of the installation tooth sleeve, a plurality of installation clamping grooves are arranged on the periphery of the outer ring along the central axis of the outer ring, and an installation clamping piece is installed on the inner side of the installation tooth sleeve.

[0006] Preferably, the inner side of the installation tooth sleeve is in a sliding sleeving state with the installation clamping groove in the inner part of the outer ring through the installation clamping piece.

[0007] Preferably, a communication screw groove penetrating the installation clamping groove is formed in the top of the installation clamping piece, and a fixing bolt for fixing the installation tooth sleeve is screw-mounted in the communication screw groove.

[0008] Preferably, annular inner cavities for storing lubricating medium are formed in the inner parts of the outer ring and the inner ring, a liquid guide groove penetrating the roller groove is formed in one side of the inner part of the annular inner cavity, a permeation control cotton is arranged in the inner part of the liquid guide groove, and the permeation control cotton has adsorption properties.

[0009] Preferably, the lubricating medium in the annular inner cavity enters the inner part of the guide groove, and the lubricating medium is quantitatively guided by the permeation control cotton in the inner part of the guide groove.

[0010] Preferably, the top part of the outer ring and the inner ring are provided with a top groove, the inner bottom part of the top groove is provided with a communication groove penetrating the annular inner cavity, and the communication groove is provided with a sealed sealing element.

[0011] Beneficial effects

[0012] The utility model provides a novel external tooth type cross roller slewing bearing.

[0013] 1. The novel external tooth type cross roller slewing bearing, the external tooth is slidably assembled and cooperated with the outer ring by installing the tooth sleeve outside the outer ring, the integral forming structure between the traditional external tooth and the outer shaft seat is changed, the installation tooth sleeve is slidably installed and connected after the assembly between the outer ring and the inner ring through the installation clamping piece in the inner side of the installation tooth sleeve and the installation clamping groove in the inner part of the outer ring, the fixed bolt is screwed in the communication screw groove in the inner part of the installation clamping piece at this time, the bottom of the fixed bolt can be screwed and locked in the communication screw groove in the inner part of the outer ring, and the installation tooth sleeve is removed, so that the external tooth on the periphery of the installation tooth sleeve and the outer ring can be conveniently and quickly disassembled and used, the outer ring and the inner ring do not need to be integrally disassembled, and the practicability of the slewing bearing is improved.

[0014] 2. The novel external tooth type cross roller slewing bearing, the inner part of the outer ring and the inner ring is provided with an annular inner cavity, and the annular inner cavity stores lubricating medium, the lubricating medium in the annular inner cavity can be guided to the inner part of the rolling groove through the guide groove, the inner side of the guide groove is provided with permeation control cotton, the permeation control cotton has adsorption and permeation characteristics, the lubricating medium can slowly flow into the rolling groove through the permeation control cotton, the rolling element is quantitatively added with lubricating medium, the rolling element is continuously lubricated and kept in the rolling groove, the annular inner cavity can be refilled and stored through the top groove, and the rolling element can be continuously and quantitatively lubricated. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating creative labor.

[0016] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the utility model, and therefore do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the functions and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the utility model installation tooth sleeve;

[0019] Figure 3 It is a schematic diagram of the utility model Figure 1 It is an enlarged view of A in the utility model;

[0020] Figure 4 It is an enlarged view of B in the utility model Figure 1

[0021] Legend:

[0022] 1, outer ring; 2, inner ring; 3, rolling groove; 4, roller; 5, installation tooth sleeve; 6, external tooth; 7, installation clamping groove; 8, installation clamping piece; 9, communication screw groove; 10, fixing bolt; 11, annular inner cavity; 12, liquid guide groove; 13, permeation control cotton; 14, top groove; 15, communication groove; 16, sealing piece. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment: A new type of external tooth cross-roller slewing bearing, like Figures 1-4 ​As shown, including the outer ring 1, inner ring 2, rolling groove 3, roller 4, outer ring 1 and inner ring 2 between the cross rolling support through a plurality of groups of rollers 4, the outer ring 1 of the outer assembly with the installation tooth sleeve 5, the outer periphery of the installation tooth sleeve 5 is integrally formed with the external teeth 6, the outer ring 1 is provided with a plurality of installation clamping grooves 7 arranged along the center axis of the outer ring 1, the inner side of the installation tooth sleeve 5 is provided with an installation clamping piece 8, the inner side of the installation tooth sleeve 5 is in slidingly sleeved state with the installation clamping groove 7 in the outer ring 1, the top of the installation clamping piece 8 is provided with a communication screw groove 9 penetrating the installation clamping groove 7, the communication screw groove 9 is internally threaded with a fixing bolt 10 for fixing the installation tooth sleeve 5, the inner ring 2 is internally provided with an annular inner cavity 11 for storing lubricating medium, the inner side of the annular inner cavity 11 is provided with a liquid guide groove 12 penetrating the rolling groove 3, the inner side of the liquid guide groove 12 is provided with a permeation control cotton 13, the permeation control cotton 13 has adsorption characteristics, the lubricating medium in the annular inner cavity 11 flows into the liquid guide groove 12 in a quantitative manner through the permeation control cotton 13 in the liquid guide groove 12, the top of the outer ring 1 and the inner ring 2 is provided with a top groove 14, the inner bottom side of the top groove 14 is provided with a communication groove 15 penetrating the annular inner cavity 11, and the inner side of the communication groove 15 is provided with a sealing sealing element 16.

[0025] The working principle of the utility model:

[0026] The external teeth 6 are in slidingly assembled cooperation with the outer ring 1 through the installation tooth sleeve 5, the integral forming structure between the traditional external teeth and the outer shaft seat is changed, after the outer ring 1 and the inner ring 2 are assembled, the installation tooth sleeve 5 can be slidably installed in the installation clamping groove 7 in the outer ring 1 through the installation clamping piece 8 in the inner side of the installation tooth sleeve 5, then the fixing bolt 10 is threadedly connected with the communication screw groove 9 in the inner side of the installation clamping piece 8, the bottom of the fixing bolt 10 can be threadedly locked in the communication screw groove 9 in the outer ring 1, and the installation tooth sleeve 5 can be conveniently and quickly disassembled and assembled between the external teeth 6 in the outer periphery of the installation tooth sleeve 5 and the outer ring 1, without the need of integrally disassembling the outer ring 1 and the inner ring 2, thereby improving the practicability of the slewing ring, the inner ring 2 is internally provided with the annular inner cavity 11, the lubricating medium is stored in the inner side of the annular inner cavity 11, the lubricating medium in the inner side of the annular inner cavity 11 can flow into the rolling groove 3 through the liquid guide groove 12, the inner side of the liquid guide groove 12 is provided with the permeation control cotton 13, the permeation control cotton 13 has adsorption and permeation characteristics, the lubricating medium can slowly flow into the rolling groove 3 through the permeation control cotton 13, the rolling groove 4 is quantitatively added with the lubricating medium, the rolling groove 4 is continuously lubricated and kept in the rolling groove 3, and the annular inner cavity 11 can be refilled through the top groove 14.

[0027] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of crossed roller slewing bearing with external teeth, comprising an outer ring (1), an inner ring (2), a roller groove (3), a roller (4), characterized in that: The outer ring (1) and the inner ring (2) are supported by cross rolling of a plurality of rollers (4), the outer ring (1) is movably assembled with an installation tooth sleeve (5), the installation tooth sleeve (5) is integrally formed with external teeth (6) on the periphery, the outer ring (1) is provided with a plurality of installation clamping grooves (7) arranged around the central axis of the outer ring (1), and the installation tooth sleeve (5) is installed with an installation clamping piece (8) on the inner side.

2. A new type of external-tooth crossed-roller slewing bearing according to claim 1, characterized in that: The inner side of the installation tooth sleeve (5) is in a sliding sleeve state with the installation clamping groove (7) inside the outer ring (1) through the installation clamping piece (8).

3. A new type of external-tooth crossed-roller slewing bearing according to claim 2, characterized in that: The top of the installation clamping piece (8) is provided with a communication screw groove (9) penetrating the installation clamping groove (7), and the inside of the communication screw groove (9) is screwed with a fixing bolt (10) for fixing the installation tooth sleeve (5).

4. A new type of external-tooth crossed-roller slewing bearing according to claim 1, characterized in that: The inner ring (2) is provided with an annular inner cavity (11) for storing lubricating medium, the inner ring (2) is provided with a liquid guide groove (12) penetrating the rolling groove (3) on one side of the annular inner cavity (11), the liquid guide groove (12) is provided with a permeation control cotton (13), and the permeation control cotton (13) has adsorption characteristics.

5. A new type of external-tooth crossed-roller slewing bearing according to claim 4, characterized in that: The lubricating medium in the annular inner cavity (11) enters the liquid guide groove (12), and the lubricating medium is quantitatively guided by the permeation control cotton (13) in the liquid guide groove (12).

6. A new type of external-tooth crossed-roller slewing bearing according to claim 5, characterized in that: The top of the outer ring (1) and the inner ring (2) is provided with a top groove (14), the inner bottom side of the top groove (14) is provided with a communication groove (15) penetrating the annular inner cavity (11), and the inside of the communication groove (15) is provided with a sealing sealing piece (16).

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