Dustproof fastening slewing bearing

Abstract

The utility model discloses a dustproof fastening slewing bearing, and belongs to the field of slewing bearings. The dustproof fastening slewing bearing comprises a supporting outer ring, a supporting inner ring is arranged in the supporting outer ring, a dustproof ring welded and fixed through a second connecting frame is arranged at the upper end of the supporting outer ring in a surrounding mode, and an upper supporting ring is arranged at the upper end of the dustproof ring. The dustproof slewing bearing solves the problem that dust is accumulated at the upper end of a gap after the existing dustproof slewing bearing prevents the dust from entering the gap, the gap between the supporting outer ring and the supporting inner ring is wrapped for dust prevention after the dustproof ring is supported by the second connecting frame, and meanwhile, the dust is prevented from being accumulated at the upper end of the gap. The upper supporting ring supported by the first connecting frame can drive the cleaning brush to make contact with the dustproof ring, the cleaning brush makes contact with and cleans the dustproof ring along with rotation of the supporting inner ring, and dust is made to be away from a gap between the supporting outer ring and the supporting inner ring.

Description

Technical Field

[0001] The utility model relates to the field of slewing bearings, in particular to a dustproof fastening slewing bearing. Background Art

[0002] Slewing bearings, also known as turntable bearings, rotary bearings or slewing bearings, are high-precision load-bearing bearings that can simultaneously withstand axial force, radial force and overturning moment, making the main machine structure more compact and featuring convenient guidance and easy maintenance. They are fixed to the upper and lower supports of mechanical equipment by bolts to achieve force and transmission functions. They are important transmission components that require relative rotation between two objects and must withstand comprehensive loads.

[0003] Chinese patent publication number CN221857307U discloses a dustproof slewing bearing, including a clamping device. Dustproof devices are provided at the upper and lower ends of the outer ring of the slewing bearing. The dustproof devices prevent dust from entering the interior of the outer ring and the inner ring of the slewing bearing. The upper and lower dustproof rings seal the gaps on the upper and lower sides of the slewing bearing. In this way, the dustproof rings can completely seal the gap between the outer ring and the inner ring of the slewing bearing using an outer clamping ring and an inner clamping ring. This device can effectively prevent dust from entering the interior of the slewing bearing.

[0004] The dustproof slewing bearing of the above patent is to prevent dust from entering the gap between the outer ring and the inner ring of the slewing bearing by wrapping a dustproof ring. After the dust is blocked from entering the gap, the dust will accumulate at the upper end of the gap. There is no cleaning structure to clean the dust. As a result, after long-term use, the accumulated dust is likely to flow into the gap in batches, affecting the service life of the slewing bearing. Utility Model Content

[0005] The purpose of the present utility model is to provide a dustproof fastening slewing bearing, which is supported by a second connecting frame through a dustproof ring, and the gap between the supporting outer ring and the supporting inner ring is wrapped to prevent dust. At the same time, the upper supporting ring supported by the first connecting frame can drive the cleaning brush to contact the dustproof ring. The cleaning brush contacts and cleans the dustproof ring as the supporting inner ring rotates, so that dust is kept away from the gap between the supporting outer ring and the supporting inner ring, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof fastening slewing bearing, comprising a supporting outer ring, a supporting inner ring is arranged inside the supporting outer ring, a dustproof ring is arranged around the upper end of the supporting outer ring and is fixed by welding through a second connecting frame, an upper supporting ring is arranged on the upper end of the dustproof ring, six first connecting frames are evenly welded around the upper supporting ring and the supporting inner ring, the upper supporting ring is supported by the first connecting frame, so that the cleaning brush at the lower end of the upper supporting ring fits the dustproof ring, and finally the cleaning brush can rotate with the supporting inner ring, cleaning the surface of the dustproof ring while rotating.

[0007] Preferably, a waterproof groove recessed in the inner ring of the support is provided at the upper end of the inner ring of the support, and a waterproof ring welded and fixed to the lower end of the dustproof ring is provided inside the waterproof groove. The waterproof ring is embedded in the waterproof groove after being supported by the dustproof ring. The waterproof ring is squeezed in the waterproof groove to limit the inflow of liquid and prevent the liquid from flowing into the gap between the support outer ring and the support inner ring.

[0008] Preferably, a cleaning brush is provided on a side of the lower end of the upper support ring facing the dustproof ring near the first connecting frame, and the cleaning brush can clean the surface of the dustproof ring.

[0009] Preferably, a first inclined surface is provided on one side of the outside of the cleaning brush, and a second inclined surface is provided on the other side of the outside of the cleaning brush. The inclination of the first inclined surface and the second inclined surface can continuously push the contacted dust when the cleaning brush rotates, so that the dust is away from the gap between the support outer ring and the support inner ring.

[0010] Preferably, a mounting groove is provided inside the upper support ring corresponding to the position of the cleaning brush, which penetrates and extends to the upper and lower ends of the upper support ring. The reserved mounting groove can facilitate the installation and replacement of the cleaning brush.

[0011] Preferably, the cleaning brush is fixedly connected to the upper support ring by bolts, and the bolts pass through the four corners of the cleaning brush in sequence to fix the cleaning brush, so that the cleaning brush is fixed to the upper support ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. When the slewing bearing of the utility model rotates and is used, the dustproof ring is first connected to the upper end of the support outer ring through the second connecting frame. When the gap between the support outer ring and the support inner ring is wrapped and dust-proofed by the dustproof ring, the waterproof ring is welded to one end of the dustproof ring and embedded in one side of the gap between the support outer ring and the support inner ring. The waterproof ring is embedded in the waterproof groove and cooperates with the surface tension of the liquid to prevent dust from entering the gap and prevent the inflow of liquid, thereby preventing the liquid from driving dust into the gap.

[0014] 2. The utility model is covered with an upper support ring on the upper end of the dust ring. The upper support ring is passed through by bolts and fixes the cleaning brush inside the mounting groove, and the cleaning brush contacts the dust ring. The support inner ring and the support outer ring rotate when rotating and realizing transmission. The rotation will cause the cleaning brush to rub and clean the surface of the dust ring, avoiding the dust retained in the gap between the support outer ring and the support inner ring at the upper end of the dust ring, which is easy to be retained. The first inclined surface and the second inclined surface on both sides of the cleaning brush contact the dust, and the inclination of the first inclined surface and the second inclined surface can actively push the dust retained on the surface of the dust ring to be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall external structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the internal structure of the supporting outer ring of the utility model;

[0017] Figure 3 For the utility model Figure 2 A partial enlarged view of area A in the middle;

[0018] Figure 4 This is a schematic diagram of the external structure of the cleaning brush of the present invention.

[0019] In the figure: 1. Support outer ring; 2. Support inner ring; 3. Upper support ring; 4. Dust ring; 5. First connecting frame; 6. Mounting groove; 7. Cleaning brush; 8. Second connecting frame; 9. Waterproof groove; 10. Waterproof ring; 11. First inclined surface; 12. Second inclined surface. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, a dustproof fastening slewing bearing of this embodiment includes a supporting outer ring 1, a supporting inner ring 2 is arranged inside the supporting outer ring 1, the supporting inner ring 2 and the supporting outer ring 1 are respectively fixedly connected to the corresponding connected structures by bolts, and a rolling body is arranged around the middle between the supporting outer ring 1 and the supporting inner ring 2, and isolation blocks are provided on both sides of the rolling body. The rolling body is connected and supported by the isolation blocks, so that when the supporting outer ring 1 and the supporting inner ring 2 rotate, the rotation of the rolling body can offset the friction generated by the contact between the supporting outer ring 1 and the supporting inner ring 2;

[0023] Among them, rubber rings are provided at both the upper and lower ends between the support outer ring 1 and the support inner ring 2. The rubber rings can protect the rolling elements and isolation blocks between the support outer ring 1 and the support inner ring 2 to prevent dust from affecting the use of the slewing bearing;

[0024] In order to prevent dust from falling between the support outer ring 1 and the support inner ring 2 during daily use of the slewing bearing, Figure 2 and Figure 3 As shown, a dust ring 4 is provided around the upper end of the support outer ring 1. The dust ring 4 is welded and fixed to the support outer ring 1 by a second connecting frame 8. The second connecting frame 8 supports the dust ring 4 so that the dust ring 4 can wrap the gap between the support outer ring 1 and the support inner ring 2.

[0025] Among them, in order to prevent liquid from approaching the gap between the support outer ring 1 and the support inner ring 2, a waterproof groove 9 is provided at the upper end of the inner part of the support inner ring 2. The waterproof groove 9 is recessed inside the support inner ring 2. A waterproof ring 10 is provided inside the waterproof groove 9, and the upper end of the waterproof ring 10 is welded and fixed to the lower end of the dustproof ring 4. While the dustproof ring 4 wraps the gap between the support outer ring 1 and the support inner ring 2, the waterproof ring 10 is embedded in the waterproof groove 9 and waterproofs;

[0026] In addition, an upper support ring 3 is provided at the upper end of the dust ring 4, and six first connecting frames 5 are evenly arranged around the upper support ring 3 and the supporting inner ring 2, and the two ends of the first connecting frame 5 are respectively welded and fixed between the upper support ring 3 and the supporting inner ring 2. The upper support ring 3 can be supported by the first connecting frame 5, so that the upper support ring 3 is wrapped around the upper end of the dust ring 4;

[0027] like Figure 2 、 Figure 3 and Figure 4 As shown, a cleaning brush 7 is provided on the side of the lower end of the upper support ring 3 facing the dust ring 4, close to the first connecting frame 5. The cleaning brush 7 is fixedly connected to the upper support ring 3 by bolts. The cleaning brush 7 is fixed to the surface of the upper support ring 3 and contacts the dust ring 4. The cleaning brush 7 rotates with the upper support ring 3 and the support inner ring 2. The rotation of the cleaning brush 7 can clean the surface of the dust ring 4, prevent dust from moving toward the gap between the support outer ring 1 and the support inner ring 2, and continuously clean the surface of the dust ring 4.

[0028] Among them, a first inclined surface 11 is provided on one side of the outside of the cleaning brush 7, and a second inclined surface 12 is provided on the other side of the outside of the cleaning brush 7. The inclination generated by the first inclined surface 11 and the second inclined surface 12 enables the cleaning brush 7 to continuously push the dust ring 4 when moving laterally, so that the dust ring 4 pushes the dust away from the gap between the support outer ring 1 and the support inner ring 2;

[0029] Example 2

[0030] In order to facilitate the installation and replacement of the cleaning brush 7, an installation groove 6 is provided inside the upper support ring 3 at the position of the cleaning brush 7, and the installation groove 6 passes through and extends to the upper and lower ends of the upper support ring 3. The cleaning brush 7 is slidably installed into the installation groove 6, and the cleaning brush 7 is fixed by bolts passing through the cleaning brush 7 and the upper support ring 3 in turn. The cleaning brush 7 can be replaced by removing the bolts.

[0031] Working principle: When using a slewing bearing and performing dust prevention, the support outer ring 1 and the support inner ring 2 are respectively connected to two connection positions. When the support outer ring 1 and the support inner ring 2 rotate, the dustproof ring 4 is wrapped in the gap between the support outer ring 1 and the support inner ring 2 through the second connecting frame 8 to prevent dust. At the same time, the waterproof ring 10 is embedded in the waterproof groove 9 to prevent liquid from flowing in. On the other hand, when the support outer ring 1 and the support inner ring 2 rotate, the support inner ring 2 will drive the cleaning brush 7 through the first connecting frame 5 to contact and generate friction with the upper end of the dustproof ring 4. The first inclined surfaces 11 and the second inclined surfaces 12 on both sides of the triangular cleaning brush 7 will push the dust in the corresponding directions respectively. The inclined first inclined surfaces 11 and the second inclined surfaces 12 can actively push the contacted dust out and away from the gap between the support outer ring 1 and the support inner ring 2.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A dustproof fastening slewing bearing, comprising a supporting outer ring (1), wherein a supporting inner ring (2) is provided inside the supporting outer ring (1), characterized in that: The upper end of the support outer ring (1) is surrounded by a dustproof ring (4) fixed by welding via a second connecting frame (8), the upper end of the dustproof ring (4) is provided with an upper support ring (3), and six first connecting frames (5) are uniformly welded around the upper support ring (3) and the support inner ring (2).

2. The dustproof fastening slewing bearing according to claim 1, characterized in that: The upper end of the inner support ring (2) is provided with a waterproof groove (9) recessed in the inner support ring (2), and the inner portion of the waterproof groove (9) is provided with a waterproof ring (10) welded and fixed to the lower end of the dustproof ring (4).

3. The dustproof fastening slewing bearing according to claim 1, characterized in that: A cleaning brush (7) is provided on a side of the lower end of the upper support ring (3) facing the dustproof ring (4) and close to the first connecting frame (5).

4. The dustproof fastening slewing bearing according to claim 3, characterized in that: A first inclined surface (11) is provided on one side of the exterior of the cleaning brush (7), and a second inclined surface (12) is provided on the other side of the exterior of the cleaning brush (7).

5. The dustproof fastening slewing bearing according to claim 3, characterized in that: The interior of the upper support ring (3) is provided with a mounting groove (6) corresponding to the position of the cleaning brush (7), which penetrates and extends to the upper and lower ends of the upper support ring (3).

6. The dustproof fastening slewing bearing according to claim 5, characterized in that: The cleaning brush (7) is fixedly connected to the upper support ring (3) via bolts.

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