Turntable bearing with outer teeth on inner ring of radar antenna and radar antenna

Abstract

The utility model discloses a turntable bearing with outer teeth on an inner ring of a radar antenna and the radar antenna, and belongs to the field of turntable bearings, the turntable bearing comprises an inner ring assembly, the inner ring assembly is of an annular structure, the inner ring assembly comprises an outer tooth part and an inner bearing part, the outer tooth part and the inner bearing part are provided with annular groove parts, the outer tooth part is located outside the annular structure, and the inner bearing part is located outside the annular structure; the inner bearing part is located in the annular structure, and teeth are arranged on the surface of the outer tooth part. The outer tooth part is meshed with the power assembly and can be driven by the power assembly to rotate; the inner bearing part can be fixedly connected with the load part; the outer ring assembly is of an annular structure, and the whole or part of the outer ring assembly is contained in the annular groove part; and the rolling body is positioned between the inner bearing part of the inner ring assembly and the outer ring assembly.

Description

Technical Field

[0001] The present application relates to the field of radar antennas, and in particular to a turntable bearing with external teeth on the inner ring of a radar antenna and a radar antenna. Background Art

[0002] Turntable bearings, also known as slewing bearings or rotary bearings, are a special large rolling bearing, mainly used in rotating mechanisms that need to withstand large axial forces, radial forces and overturning moments. This type of bearing has the advantages of compact structure, large load-bearing capacity, and easy installation and maintenance. It is widely used in engineering machinery, port machinery, wind power generation equipment, radar antenna support systems and other fields.

[0003] Slewing bearings are usually composed of an inner ring, an outer ring, rolling elements, a spacer (or cage) and a sealing device. There are four main structural types: single-row four-point contact ball bearings, double-row different-diameter ball slewing bearings, single-row cross-roller slewing bearings, and three-row cylindrical roller slewing bearings. They can be divided into two types: gearless and geared.

[0004] Geared slewing bearing is a specially designed slewing bearing. The characteristic of this design is that one of the rings (outer ring or inner ring) has a gear, which combines the traditional slewing bearing function with the gear transmission function and can be directly connected to the drive device or other transmission components.

[0005] In traditional geared turntable bearings, when the inner ring has gears, the inner ring is the moving ring, and the gears are in the innermost layer of the turntable bearing. This structural form limits the relative installation position of the power component that matches the moving ring, so that the installation position relationship is fixed to the base, turntable bearing, and load, which is difficult to meet the needs of special applications such as inverted installation (i.e. the turntable bearing is installed below the base and the load is above the base). Utility Model Content

[0006] In order to solve the problems in the prior art, the present application discloses a turntable bearing with an inner ring of a radar antenna and external teeth, comprising:

[0007] The inner ring assembly is an annular structure, and the inner ring assembly includes an outer tooth portion and an inner receiving portion, an annular groove portion is provided between the outer tooth portion and the inner receiving portion, the outer tooth portion is located outside the annular structure, the inner receiving portion is located inside the annular structure, and teeth are provided on the surface of the outer tooth portion; the outer tooth portion and the power assembly teeth are in harmony and can be driven to rotate by the power assembly; the inner receiving portion can be fixedly connected to the load portion;

[0008] The outer ring assembly is an annular structure, and all or part of the outer ring assembly is accommodated in the annular groove portion;

[0009] The rolling element is located between the inner receiving portion of the inner ring assembly and the outer ring assembly.

[0010] In a preferred embodiment, the inner ring assembly further includes a connecting portion, and the connecting portion is located between the outer tooth portion and the inner receiving portion, and the outer tooth portion, the inner receiving portion, and the connecting portion form the annular groove portion.

[0011] In the improved solution, the surface of the inner receiving portion is provided with a first rolling groove, and the surface of the outer ring component is provided with a second rolling groove, and the first rolling groove and the second rolling groove form a rolling groove channel for accommodating the rolling body.

[0012] In an improved solution, the outer ring assembly can be fixedly connected to the base.

[0013] In the improved solution, the outer ring assembly and the base are connected by bolts.

[0014] In an improved solution, the rolling bodies are isolated by isolation blocks.

[0015] In the improved solution, a sealing device is provided between the inner ring assembly and the outer ring assembly to seal the lubricating oil between the inner ring assembly and the outer ring assembly.

[0016] The present application also discloses a radar antenna, comprising:

[0017] The slewing bearing;

[0018] A power assembly that drives the inner ring assembly to rotate;

[0019] A load-bearing portion connected to the inner receiving portion;

[0020] The base is fixedly connected to the outer ring component.

[0021] The power assembly comprises a driving tooth portion, which is meshed with an external tooth portion.

[0022] The present application creates a new structural form, providing an additional option for the matching of the power assembly and the slewing bearing, with more flexible installation and stronger adaptability; it can be used in special occasions such as inverted installation, expanding the application range of the slewing bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the prior art;

[0024] Figure 2 is a schematic diagram of the structure of Example 1 of the present application;

[0025] Figure 3 is a structural cross-sectional view of Example 1 of the present application;

[0026] Figure 4 It is a schematic diagram of the structure of each component of Example 1 of the present application;

[0027] Figure 5is a partial device schematic diagram of the radar antenna of Example 1 of the present application;

[0028] Figure 6 is a cross-sectional view of Example 1 of the present application;

[0029] Markings in the figure: 1-inner ring assembly, 11-external tooth portion, 12-connecting portion, 13-inner receiving portion, 14-annular groove portion, 15-through hole, 2-outer ring assembly, 3-rolling element, 4-power assembly, 41-driving tooth portion, 5-load portion, 6-base, 7-external inner ring, 8-external outer ring, 9-turntable bearing fixing bolt. DETAILED DESCRIPTION

[0030] like Figure 1 The figure shows a schematic diagram of an existing turntable bearing, which includes an existing inner ring 7 and an existing outer ring 8 connected to the existing inner ring 7. When the existing inner ring 7 has teeth, the inner ring is a moving ring, and the teeth are in the innermost layer of the turntable bearing. This structural form limits the relative installation position of the power component (the power component is usually installed near the bottom of the inner ring) that cooperates with the moving ring, so that the installation position relationship is fixed to the base, turntable bearing, and load, which is difficult to use for inverted installation.

[0031] Embodiment 1: In order to solve the above problems, Figure 2 and Figure 4 As shown, in this embodiment, a turntable bearing with an inner ring of a radar antenna having external teeth is disclosed, which is characterized in that it includes an inner ring component 1, an outer ring component 2, and a rolling body 3 located between the inner ring component 1 and the outer ring component 2.

[0032] like Figure 3 As shown, the inner ring assembly 1 is an annular structure, forming a closed circular ring, and the inner ring assembly includes an outer tooth portion 11, an inner receiving portion 13, and a connecting portion 12 located between the outer tooth portion 11 and the inner receiving portion 13. An annular groove portion 14 is provided between the outer tooth portion 11 and the inner receiving portion 13, the outer tooth portion 11 is located outside the annular structure, and the inner receiving portion 13 is located inside the annular structure, and the outer tooth portion 11, the inner receiving portion 13, and the connecting portion 12 form the annular groove portion 14. Teeth are provided on the surface of the outer tooth portion 11, and the teeth are located on the peripheral surface of the outer tooth portion and extend to the outside of the annular structure. The outer tooth portion 11 is meshed with the power component 4 and can be driven to rotate by the power component 4; the inner receiving portion 13 can be fixedly connected to the load portion 5. As shown Figure 4 As shown, the thickness of the outer tooth portion 11 is generally smaller than the thickness of the inner receiving portion 13 .

[0033] like Figure 3 and Figure 4As shown, the outer ring assembly 2 is an annular structure, and all or part of the outer ring assembly 2 is accommodated in the annular groove portion 14. The structure of the outer ring assembly 2 matches the structure of the annular groove portion 14. More specifically, the structural design of the outer ring assembly 2 enables the upper surface of the outer ring assembly 2 and the upper surface of the inner receiving portion 13 to be basically on the same plane when the outer ring assembly 2 is located in the annular groove portion 14. More specifically, in order to install the rolling body 3 between the inner receiving portion 13 and the outer ring assembly 2, the surface of the inner receiving portion 13 is provided with a first rolling groove, and the surface of the outer ring assembly 2 is provided with a second rolling groove. The first rolling groove and the second rolling groove form a rolling groove for accommodating a plurality of rolling bodies 3, and the rolling body 3 can roll in the rolling groove. More specifically, a plurality of rolling bodies are isolated by an isolation block, which is a prior art.

[0034] In a more specific solution, a sealing device is provided between the inner ring assembly 1 and the outer ring assembly 2 to seal the lubricating oil between the inner ring assembly 1 and the outer ring assembly 2, which is an existing conventional technology and is not shown in the figure. The sealing device is made of conventional general-purpose structural rubber material and is configured when the raceway lubrication method is sealed lubrication, and is not configured when it is open lubrication.

[0035] like Figure 5 As shown, this embodiment also discloses a radar antenna. Figure 5 It is a local structure, and the others not shown are conventional structures. The radar antenna includes: a turntable bearing with an inner ring and external teeth of the radar antenna of the present application, a power component 4, a load part 5, and a base 6.

[0036] The power assembly 4 drives the inner ring assembly to rotate. In a more specific solution, the power assembly 4 includes a driving tooth portion 41, which is meshed with the outer tooth portion 11. The power assembly 4 is replaced according to the usage scenario, and its main feature is that it contains a driving tooth portion 41.

[0037] The load part 5 is connected to the inner receiving part 13, and the connection can be an integrated molding or a detachable connection. In a more specific solution, the detachable connection can be connected by bolts, buckles, etc., and the integrated molding can be welding, etc. In a more specific solution, a number of connection holes are evenly arranged around the inner receiving part 13, and corresponding connection holes are also arranged on the load part 5. The connection holes connect the load part 5 and the inner receiving part 13 through bolts. The power assembly 4 drives the driving gear part 41 to rotate, thereby driving the inner ring assembly to rotate, and further driving the load part 5 to rotate accordingly.

[0038] like Figure 5As shown, the base 6 and the outer ring assembly 2 are fixedly connected, and the base is fixed. In a more specific solution, the base can be a plate-like structure, and the outer ring assembly 2 and the base 6 are connected by bolts; in a more specific solution, as Figure 6 As shown, the outer ring assembly 2 is provided with a connecting hole, and the connecting portion 12 of the inner ring assembly 1 is provided with a through hole 15. Bolts enter the connecting holes through the through holes 15 and fix the outer ring assembly 2 and the base 6 to achieve inverted assembly.

[0039] In the scheme of this embodiment, the tooth portion of the inner ring component 1 is arranged on the outer layer, and the inner ring component has teeth and the teeth are on the outside, which provides an additional option for the cooperation between the power component and the slewing bearing, and is more flexible in installation and more adaptable; it can be used in special occasions such as inverted installation, expanding the application range of slewing bearings.

[0040] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A turntable bearing with external teeth on the inner ring of a radar antenna, characterized in that: Included are: The inner ring assembly (1) is an annular structure, comprising an outer tooth portion (11) and an inner receiving portion (13), an annular groove portion (14) being provided between the outer tooth portion (11) and the inner receiving portion (13), the outer tooth portion (11) being located outside the annular structure, the inner receiving portion (13) being located inside the annular structure, and teeth being provided on the surface of the outer tooth portion (11); the outer tooth portion (11) meshes with the power assembly (4) and can be driven to rotate by the power assembly (4); the inner receiving portion (13) can be fixedly connected to the load portion (5); An outer ring assembly (2), wherein all or part of the outer ring assembly (2) is accommodated in the annular groove portion (14); The rolling element (3) is located between the inner receiving portion (13) of the inner ring assembly (1) and the outer ring assembly (2).

2. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 1, characterized in that: The inner ring assembly (1) further comprises a connecting portion (12), wherein the connecting portion (12) is located between the outer tooth portion (11) and the inner receiving portion (13), and the outer tooth portion (11), the inner receiving portion (13), and the connecting portion (12) form the annular groove portion (14).

3. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 2, characterized in that: The surface of the inner receiving portion (13) is provided with a first rolling groove, and the surface of the outer ring assembly (2) is provided with a second rolling groove, and the first rolling groove and the second rolling groove form a rolling groove channel for accommodating the rolling body (3).

4. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 3, characterized in that: The outer ring component (2) can be fixedly connected to the base (6).

5. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 4, characterized in that: The outer ring assembly (2) and the base (6) are connected by bolts.

6. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 5, characterized in that: The rolling elements (3) are isolated by isolation blocks.

7. The turntable bearing with outer teeth on the inner ring of the radar antenna according to claim 6, characterized in that: A sealing device is provided between the inner ring assembly (1) and the outer ring assembly (2) for sealing the lubricating oil between the inner ring assembly (1) and the outer ring assembly (2).

8. A radar antenna, characterized in that: Included are: The radar antenna slewing bearing with outer teeth on the inner ring according to any one of claims 1 to 7; A power assembly (4) driving the inner ring assembly to rotate; A load-bearing portion (5) connected to the inner receiving portion (13); A base (6) is fixedly connected to the outer ring assembly (2).

9. The radar antenna according to claim 8, characterized in that: The power assembly (4) comprises a driving tooth portion (41), and the driving tooth portion (41) is meshed with the external tooth portion (11).

Images