A composite turntable bearing

Abstract

The utility model discloses a composite turntable bearing, which specifically relates to the technical field of composite bearings, including a steel sleeve, the upper and lower parts of the inner wall of the steel sleeve are fixedly connected with sealing plates, the middle part of the inner wall of the steel sleeve is fixedly connected with a waist ring, balls are arranged between the upper part of the waist ring and the sealing plate for rolling, two groups of balls are arranged symmetrically in the vertical direction, and the other group of balls is arranged between the lower part of the waist ring and the sealing plate for rolling, an upper connecting ring and a lower connecting ring that can rotate in a circular direction are arranged on the outer wall of the steel sleeve, and an intermediate ring is arranged between the upper connecting ring and the lower connecting ring. The utility model can make the upper part and the lower part of the steel sleeve rotate simultaneously by arranging the upper connecting ring, the intermediate ring and the lower connecting ring that can rotate in the circumferential direction, and can make it easier to connect the upper parts and the lower parts by using the external threads arranged on the outer parts of the upper connecting ring and the lower connecting ring, so that it is more convenient and quick to use.

Description

Technical Field

[0001] The utility model relates to the technical field of composite bearings, in particular to a composite turntable bearing. Background Art

[0002] A bearing composed of different components (metal, plastic, solid lubricant) is called a composite bearing. Composite bearings are themselves plain bearings. Composite bearings are also called bushings, bearing shells or sleeve bearings. They are usually cylindrical and do not contain moving parts. Standard configurations include cylindrical bearings for radial loads, flanged bearings for radial and light axial loads, washers and flanged washers for heavy axial loads, and sliding plates of various shapes. Custom designs can also be made, containing special shapes, features (oil grooves, holes, notches, protrusions, etc.) and sizes. Composite bearings are used for sliding, rotating, oscillating or reciprocating motion. Sliding applications are commonly used as plain bearings, bearing liners and wear plates. The sliding surface is usually flat, but can also be cylindrical, and always moves linearly, not rotating. Rotating applications involve cylindrical surfaces and one or two directions of travel. Oscillating and reciprocating applications involve flat or cylindrical surfaces and bidirectional travel.

[0003] Slewing bearings are large, specially constructed bearings capable of simultaneously bearing large combined loads, including axial, radial, and overturning moments, integrating multiple functions, including support, rotation, transmission, and fixation. Composite slewing bearings can meet the diverse needs of various mainframes operating under diverse operating conditions. Furthermore, slewing bearings offer compact structure, convenient rotation guidance, simple installation, and easy maintenance. They are widely used in large rotating equipment, including lifting and transport machinery, mining machinery, construction machinery, port machinery, wind turbines, medical equipment, radar, and missile launchers.

[0004] When the existing slewing bearings are in use, most of them have only one surface that can rotate, while the other surface cannot rotate. When the slewing bearing is needed to connect the upper and lower parts in the vertical direction, it is often necessary to connect two slewing bearings so that the rotating surfaces of the two slewing bearings face upward and downward respectively, so that the upper and lower parts in the vertical direction can rotate simultaneously, which is inconvenient to use.

[0005] Therefore, we make improvements to this and propose a composite slewing bearing. Utility Model Content

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The utility model discloses a composite turntable bearing, comprising a steel sleeve, wherein the upper and lower parts of the inner wall of the steel sleeve are fixedly connected with sealing plates, the middle part of the inner wall of the steel sleeve is fixedly connected with a waist ring, balls are arranged for rolling between the upper part of the waist ring and the sealing plates, two groups of balls are symmetrically arranged in the vertical direction, and the other group of balls is arranged for rolling between the lower part of the waist ring and the sealing plates, an upper connecting ring and a lower connecting ring which can rotate in a circle are arranged on the outer wall of the steel sleeve, and an intermediate ring is arranged between the upper connecting ring and the lower connecting ring.

[0008] As an optimal technical solution of the present invention, a sliding groove is provided on the outer wall of the steel sleeve, and three groups of the sliding groove are provided in the vertical direction of the steel sleeve. The upper connecting ring and the lower connecting ring are both slidingly connected between the sliding grooves at their corresponding positions, and the middle ring is fixedly connected to the sliding groove.

[0009] As an optimal technical solution of the present invention, a first slider is fixedly connected to the upper connecting ring, a second slider is fixedly connected to the middle ring, and a third slider is fixedly connected to the lower connecting ring. The first slider and the third slider are respectively slidably connected between the sliding grooves at their corresponding positions, and the second slider is fixedly connected in the sliding groove corresponding to it.

[0010] As a preferred technical solution of the present invention, the middle ring is provided with mounting holes, and the mounting holes are evenly distributed in a plurality of groups around the center of the middle ring, and support rollers are rollingly connected in the mounting holes.

[0011] As an optimal technical solution of the present invention, an upper rolling groove is provided on the lower surface of the upper connecting ring, and a lower rolling groove is provided on the upper surface of the lower connecting ring. The two vertices of the supporting roller in the vertical direction are in sliding contact with the upper rolling groove and the lower rolling groove respectively.

[0012] As a preferred technical solution of the present invention, external threads are fixedly connected to the outer walls of the upper connecting ring and the lower connecting ring.

[0013] The beneficial effects of the present invention are as follows: in the present invention, by providing an upper connecting ring, an intermediate ring and a lower connecting ring that can rotate in the circumferential direction, the upper part and the lower part of the steel sleeve can be rotated at the same time, and the external threads provided on the outside of the upper connecting ring and the lower connecting ring can be used to more conveniently connect the upper parts and the lower parts, making it more convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation position structure of the intermediate ring of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] In the figure: 1. Steel sleeve; 11. Slide groove; 2. Waist ring; 3. Closing plate; 4. Ball; 5. Upper connecting ring; 51. Upper rolling groove; 52. First slider; 6. Middle ring; 61. Mounting hole; 62. Support roller; 63. Second slider; 7. Lower connecting ring; 71. Lower rolling groove; 72. Third slider; 8. External thread. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0020] Example: Figures 1 to 3 As shown, the utility model is a composite turntable bearing, comprising a steel sleeve 1, with sealing plates 3 fixedly connected to the top and bottom of the inner wall of the steel sleeve 1, a waist ring 2 fixedly connected to the middle of the inner wall of the steel sleeve 1, balls 4 rollingly arranged between the top of the waist ring 2 and the sealing plate 3, two groups of balls 4 symmetrically arranged in the vertical direction, and the other group of balls 4 rollingly arranged between the bottom of the waist ring 2 and the sealing plate 3, an upper connecting ring 5 and a lower connecting ring 7 that can rotate in a circle are arranged on the outer wall of the steel sleeve 1, and an intermediate ring 6 is arranged between the upper connecting ring 5 and the lower connecting ring 7.

[0021] By providing the upper connecting ring 5 and the lower connecting ring 7, it is easier to install the parts that need to be connected, and it is more convenient and quick to use.

[0022] A slide groove 11 is provided on the outer wall of the steel sleeve 1. There are three groups of slide grooves 11 in the vertical direction of the steel sleeve 1. The upper connecting ring 5 and the lower connecting ring 7 are slidingly connected to the slide grooves 11 at their corresponding positions, and the middle ring 6 is fixedly connected to the slide grooves 11.

[0023] By utilizing the upper connecting ring 5 and the lower connecting ring 7 to be slidably arranged in the corresponding sliding grooves 11, it is possible to more conveniently install and connect the upper parts and the lower parts.

[0024] The upper connecting ring 5 is fixedly connected to a first slider 52, the middle ring 6 is fixedly connected to a second slider 63, and the lower connecting ring 7 is fixedly connected to a third slider 72. The first slider 52 and the third slider 72 are respectively slidably connected between the slide grooves 11 at their corresponding positions, and the second slider 63 is fixedly connected in the slide groove 11 corresponding to it.

[0025] By utilizing the sliding connection between the first slider 52 and the third slider 72 and the slide groove 11 at their corresponding positions, it is easier to drive the upper connecting ring 5 and the lower connecting ring 7 to rotate simultaneously, and the intermediate ring 6 fixedly connected to the slide groove 11 can more easily support the support roller 62.

[0026] The intermediate ring 6 is provided with mounting holes 61, which are arranged in a uniform array around the center of the intermediate ring 6. Support rollers 62 are rotatably connected to each of the mounting holes 61. The uniform array of mounting holes 61 on the intermediate ring 6 facilitates the installation of the support rollers 62.

[0027] An upper rolling groove 51 is provided on the lower surface of the upper connecting ring 5 , and a lower rolling groove 71 is provided on the upper surface of the lower connecting ring 7 . The two vertices of the supporting roller 62 in the vertical direction are in sliding contact with the upper rolling groove 51 and the lower rolling groove 71 respectively.

[0028] By respectively providing the upper rolling groove 51 and the lower rolling groove 71 on the upper connecting ring 5 and the lower connecting ring 7 , it is possible to more easily support the rolling of the supporting roller 62 , making it more convenient and quick to use.

[0029] The outer walls of the upper connecting ring 5 and the lower connecting ring 7 are all fixedly connected with external threads 8. By means of the external threads 8 fixedly connected outside the upper connecting ring 5 and the lower connecting ring 7, it is possible to more conveniently connect and install the upper parts and the lower parts.

[0030] During operation, the balls 4 are respectively arranged in the cavities above the upper closing plate 3 and waist ring 2 and below the lower closing plate 3 and waist ring 2 through a retaining frame (existing technology, not shown in the figure), and then the closing plate 3 is fixed, and the supporting roller 62 is installed in the mounting hole 61 on the middle ring 6, and finally the upper connecting ring 5, the middle ring 6 and the lower connecting ring 7 are respectively installed in the corresponding slide grooves 11 through the first slider 52, the second slider 63 and the third slider 72 fixed thereon.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A composite turntable bearing, comprising a steel sleeve (1), characterized in that: The upper and lower parts of the inner wall of the steel sleeve (1) are fixedly connected with sealing plates (3), the middle part of the inner wall of the steel sleeve (1) is fixedly connected with a waist ring (2), balls (4) are rollingly arranged between the upper part of the waist ring (2) and the sealing plate (3), two groups of balls (4) are symmetrically arranged in the vertical direction, and the other group of balls (4) is rollingly arranged between the lower part of the waist ring (2) and the sealing plate (3), and the outer wall of the steel sleeve (1) is provided with an upper connecting ring (5) and a lower connecting ring (7) that can rotate in a circular motion, and an intermediate ring (6) is arranged between the upper connecting ring (5) and the lower connecting ring (7).

2. A composite turntable bearing according to claim 1, characterized in that: The outer wall of the steel sleeve (1) is provided with a slide groove (11), and three groups of the slide grooves (11) are provided in the vertical direction of the steel sleeve (1). The upper connecting ring (5) and the lower connecting ring (7) are both slidably connected to the slide grooves (11) at their corresponding positions, and the intermediate ring (6) is fixedly connected to the slide grooves (11).

3. The composite turntable bearing according to claim 1, characterized in that: The upper connecting ring (5) is fixedly connected with a first slider (52), the intermediate ring (6) is fixedly connected with a second slider (63), and the lower connecting ring (7) is fixedly connected with a third slider (72). The first slider (52) and the third slider (72) are respectively slidably connected to the slide grooves (11) at their corresponding positions, and the second slider (63) is fixedly connected in the slide groove (11) corresponding to it.

4. The composite turntable bearing according to claim 1, characterized in that: The intermediate ring (6) is provided with mounting holes (61), and a plurality of groups of mounting holes (61) are evenly distributed in an array around the center of the intermediate ring (6), and supporting rollers (62) are rollingly connected in the mounting holes (61).

5. The composite turntable bearing according to claim 4, characterized in that: An upper rolling groove (51) is provided on the lower surface of the upper connecting ring (5), a lower rolling groove (71) is provided on the upper surface of the lower connecting ring (7), and two vertices of the supporting roller (62) in the vertical direction are in sliding contact with the upper rolling groove (51) and the lower rolling groove (71) respectively.

6. The composite turntable bearing according to claim 1, characterized in that: External threads (8) are fixedly connected to the outer walls of the upper connecting ring (5) and the lower connecting ring (7).

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