Slewing bearing

Abstract

The utility model discloses a slewing bearing and belongs to the technical field of slewing bearing structures. The bearing comprises an outer ring, and the outer ring is provided with a supporting conical surface; the inner ring is provided with an oblique conical surface matched with the supporting conical surface; the inner ring is pressed on the supporting conical surface of the outer ring through an oblique conical surface, and the inner ring and the outer ring are in sliding connection through a rotating body; the gear sheet is used for driving the outer ring or the inner ring to rotate through an external driving device; according to the utility model, the inner ring and the outer ring are in a matched taper inclined plane and press fit relationship, and the outer ring and the inner ring are pressed into a whole in a manner that the gear sheet is connected with the outer ring, so that the outer ring and the inner ring operate respectively, the inner ring can be opened, and a rotating body is convenient to place; and meanwhile, installation, debugging and maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slewing bearing and belongs to the technical field of slewing bearing structure. BACKGROUND

[0002] The existing slewing bearing product is difficult to install and has high manufacturing cost due to the limitation of structure and manufacturing process; the slewing bearing requires high power for operation and has limited anti-overturning performance; it is difficult to maintain and repair the slewing bearing in use, especially when heavy load is applied, the debugging of the multi-column lubricating structure is quite complex. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects in the prior art and providing a slewing bearing to solve the problem of difficult debugging, maintenance and repair of the existing slewing bearing.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A slewing bearing comprises:

[0006] An outer ring provided with a supporting conical surface;

[0007] An inner ring provided with an inclined conical surface matched with the supporting conical surface;

[0008] The inner ring is pressed on the supporting conical surface of the outer ring through the inclined conical surface, and the two are connected through a rotating body in sliding mode;

[0009] A gear piece driven to rotate the outer ring by an external driving device.

[0010] Optionally, the supporting conical surface is matched with the inner ring in the form of a conical surface, a multi-angle inclined surface or a multi-step platform, and the inclined conical surface is matched with the supporting conical surface.

[0011] Optionally, the contact part of the gear piece and the inner ring is in sliding connection.

[0012] Optionally, the inner ring is provided at the top with a bearing surface and at the bottom with a bottom end surface, and the bearing surface and the bottom end surface are both flat surfaces.

[0013] Optionally, the gear piece is fixed to the outer ring through a connecting piece.

[0014] Optionally, the connecting piece is connected by a bolt.

[0015] Optionally, the outer ring is provided along the circumferential direction with a fixing hole matched with the connecting piece.

[0016] Optionally, the inclination of the supporting conical surface is 30-70°.

[0017] Optionally, the slope of the inclined conical surface is 30-70°.

[0018] Optionally, the rotating body adopts any one of a spherical ball, a cylinder and a ring.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The inner ring can be opened, and the gap of the outer ring, the inner ring and the rotating body and the like can be adjusted and adjusted.

[0021] The inner ring can be opened, and the gap of the outer ring, the inner ring and the rotating body and the like can be adjusted and adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the present application slewing bearing;

[0023] Figure 2 It is a whole structure schematic view of the present application slewing bearing;

[0024] Figure 3 It is a whole structure schematic view of the present application slewing bearing;

[0025] Figure 4 It is a whole structure schematic view of the present application slewing bearing;

[0026] Figure 5 It is a whole structure schematic view of the present application slewing bearing;

[0027] Figure 6 It is a whole structure schematic view of the present application slewing bearing;

[0028] In the figure: 1, outer ring; 11, support conical surface; 2, inner ring; 21, bearing surface; 22, inclined conical surface; 23, bottom end face; 3, rotating body; 4, fixed hole; 5, connecting piece; 6, gear piece. DETAILED DESCRIPTION

[0029] The present application will be further described below in combination with the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and cannot limit the protection scope of the present application.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0031] Embodiment 1, as shown in Figures 1-5 A slewing bearing is disclosed, comprising:

[0032] An outer ring 1, the outer ring 1 is provided with a supporting conical surface 11;

[0033] An inner ring 2, the inner ring 2 is provided with a bevel 22 matched with the supporting conical surface 11;

[0034] The inner ring 2 is pressed on the supporting conical surface 11 of the outer ring 1 through the bevel 22, and the two are connected through the sliding connection of the rotating body 3; it needs to be further explained here that the rotating body 3 is in contact with the two, which ensures that the two can rotate relative to each other.

[0035] A gear piece 6, the gear piece 6 is connected with the outer ring 1, the outer ring 1 is driven to rotate through an external driving device, and the gear piece is fixed on the outer ring 1 through the connecting piece 5.

[0036] In this embodiment, it is worth noting that the contact part of the gear piece 6 and the inner ring 2 is a sliding connection, which reduces the hard friction between the two, the sliding connection between the two is realized through the spherical ball, and the gap between the inner ring and the gear piece 6 can be adjusted according to the size of the spherical ball.

[0037] In the specific implementation process of the embodiment, the inner ring 2 is provided with a bearing surface 21 at the top and a bottom end surface 23 at the bottom, and the bearing surface 21 and the bottom end surface 23 are both flat surfaces.

[0038] In the implementation process, the inner ring 2 and the outer ring 1 are in a tapered bevel relationship, the tapered bevel is used to increase the stress area and stress load, so as to improve the overturning resistance of the slewing bearing product.

[0039] The gear plate 6 is fixed to the outer ring 1 by the connector 5. The outer ring 1 has a fixing hole 4 along the circumferential direction that mates with the connector 5. The connector 5 is connected by bolts, and the fixing hole 4 is a threaded hole. It is worth noting that the gear plate 6 is installed by pressing the outer ring against the inner ring, that is, the drive device is located on the outer side of the outer ring to drive the gear plate.

[0040] In this embodiment, the slope of the supporting cone surface 11 of the outer ring 1 ranges from 30° to 70°. To ensure the most uniform force distribution, this embodiment sets it to 45°, 50°, 55°, or 60°. The angle of the inclined cone surface 22 corresponds to the slope of the supporting cone surface 11.

[0041] In this embodiment, due to the tapered inclined surface structure, the slewing bearing becomes a whole bearing force, rather than just a ball groove or a local inclined edge bearing force, thereby improving the product's anti-overturning ability.

[0042] In this embodiment, the rotating body 3 can be any one of a spherical bead, a cylinder, or a ring. Example

[0043] like Figure 5 As shown, the difference from Embodiment 1 is that the gear 6 is installed inside the outer ring 1, and the inner ring 2 is pressed together from the inside. In other words, the drive device is located on the inner ring side to drive the gear 6. The gear 6 is also fixed by the connecting member 5, which is a bolt.

[0044] Example 3, as Figure 6 As shown, the supporting cone surface 11 is based on a conical surface. The inclined surface of its outer ring can be at one angle to match the inner ring, or it can be at multiple angles, multiple steps, or a trapezoidal form to match the inner ring. However, the angles of the outer ring and the inner ring match. Generally, slewing bearings cannot be completed in a single stage. Some are three or four stages, especially for heavy loads. Using this structure can increase the stress.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should also be considered as the protection scope of the present application.

Claims

1. A slewing bearing, characterized in that it comprises: an outer ring (1) provided with a supporting conical surface (11); an inner ring (2) provided with an inclined conical surface (22) matched with the supporting conical surface (11); the inner ring (2) is pressed on the supporting conical surface (11) of the outer ring (1) through the inclined conical surface (22), and the two are connected through a rotating body (3) in sliding mode; a gear piece (6) connected with the outer ring (1) and driven to rotate the outer ring (1) through an external driving device.

2. Slew bearing according to claim 1, characterized in that The supporting conical surface (11) is matched with the inner ring in the mode of a conical surface, a multi-angle inclined surface, a multi-step ladder, and the inclined conical surface (22) is matched with the supporting conical surface (11) correspondingly.

3. Slew bearing according to claim 1, characterized in that The contact part of the gear piece (6) with the inner ring (2) is in sliding connection.

4. Slew bearing according to claim 1, characterized in that The inner ring (2) is provided at the top with a bearing surface (21) and at the bottom with a bottom end surface (23), and the bearing surface (21) and the bottom end surface (23) are both flat surfaces.

5. Slew bearing according to claim 1, characterized in that The gear piece (6) is fixed with the outer ring (1) through a connecting piece (5).

6. Slew bearing according to claim 5, characterized in that The connecting piece (5) is connected through a bolt.

7. Slew bearing according to claim 5, characterized in that The outer ring (1) is provided along the circumferential direction with a fixing hole (4) matched with the connecting piece (5).

8. Slew bearing according to claim 1, characterized in that The inclination of the supporting conical surface (11) is 30-70°.

9. Slew bearing according to claim 1, characterized in that The inclination of the inclined conical surface (22) is 30-70°.

10. Slew bearing according to claim 1, characterized in that The rotating body (3) is any one of a spherical ball, a cylinder, and a ring.

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