Slewing bearing for radar turntable system

Abstract

The utility model discloses a slewing bearing for a radar turntable system, which comprises a slewing bearing outer ring and a slewing bearing inner ring, the slewing bearing outer ring and the slewing bearing inner ring are rotatably connected with each other, and a gap is formed at the joint of the slewing bearing outer ring and the slewing bearing inner ring. A gap is formed in the slewing bearing outer ring, an annular groove is formed in the position, located on the slewing bearing outer ring, of the top of the gap, a downwards-sunken water passing groove is annularly formed in the position, located on the annular groove, of the slewing bearing outer ring, a through hole is vertically formed in the slewing bearing outer ring, and a water passing channel used for draining liquid is formed between the through hole and the water passing groove. Through the structural effect generated by combining the multiple sealing pieces, the water passing grooves and the water passing channels, the waterproof and dustproof technical effects can be achieved.

Description

Technical Field

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

[0002] Slewing bearing is an important force transmission component on engineering machinery that can withstand axial force, radial force and overturning moment. It is widely used in real industry and is called "machine joint". It is widely used in automobile cranes, port cranes, railway cranes, ship cranes, container cranes, metallurgical cranes, excavators, filling machines, navigation instruments, as well as high-precision and cutting-edge fields such as CT standing wave therapy devices, radar antenna bases, missile launchers, tanks, robots and revolving restaurants. The force situation of slewing bearing is complex, and high requirements are placed on performance indicators. However, the technology and production equipment of most domestic slewing bearing manufacturers cannot meet the requirements for the time being.

[0003] At present, more and more radar turntable systems are beginning to use slewing bearings. This type of slewing bearing requires tight installation and must be dustproof and waterproof. Currently, there are deficiencies in the market for this type of slewing bearing, both in terms of structural design and production and processing. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned background technical problems and to provide a slewing bearing for a radar turntable system.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A slewing bearing for a radar turntable system comprises a slewing bearing outer ring and a slewing bearing inner ring, wherein the slewing bearing outer ring and the slewing bearing inner ring are rotatably connected to each other, a gap is formed at the connection between the slewing bearing outer ring and the slewing bearing inner ring, an annular groove is provided at the top of the gap at the slewing bearing outer ring, a water groove which is concave downward is provided in an annular groove on the slewing bearing outer ring, a through hole is vertically provided in the slewing bearing outer ring, and a water channel for draining liquid is provided between the through hole and the water groove.

[0007] As a further solution of the utility model: a first seal is provided on the side wall of the inner ring of the slewing bearing at the annular groove, the first seal is an annular structure, the inner ring of the first seal is connected to the inner ring of the slewing bearing, the outer ring of the first seal is inclined downward and frictionally contacts the annular groove, and the first seal is used to block the liquid in the annular groove.

[0008] As a further solution of the utility model: a second seal is arranged in the gap near the first seal, the second seal is an annular structure, the inner ring of the second seal is connected to the inner ring of the slewing bearing, and the outer ring of the second seal is in friction contact with the outer ring of the slewing bearing.

[0009] As a further solution of the present invention: the cross-sectional shape of the second sealing member is a "Y" shape.

[0010] As a further solution of the utility model: a third sealing member is arranged at the bottom of the inner wall of the inner ring of the slewing bearing, and the third sealing member is an annular structure.

[0011] As a further solution of the utility model: a fourth sealing member is arranged in the gap below the rolling body, and the fourth sealing member is an annular structure.

[0012] As a further solution of the utility model: a groove is provided at the bottom of the inner ring of the slewing bearing, and the groove is used to fill the shock-absorbing material.

[0013] As a further solution of the utility model: the groove is an annular structure.

[0014] As a further solution of the utility model: the inner wall of the inner ring of the slewing bearing is bent inwardly in multiple sections to form a bent inclined surface.

[0015] As a further solution of the utility model: the slewing bearing outer ring and the slewing bearing inner ring are rotatably connected via rolling bodies.

[0016] Beneficial effects of the utility model: The structural effect produced by the combination of multiple sealing members, water grooves and water channels in the present application can achieve the technical effect of waterproofing and dustproofing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is an enlarged view of point A.

[0020] In the figure: 1, slewing bearing outer ring; 2, rolling element; 4, first seal; 5, second seal; 6, slewing bearing inner ring; 7, third seal; 8, oil nozzle; 9, groove; 10, water groove; 11, water channel; 12, fourth seal. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] For example, see Figure 1-2 As shown, the utility model is a slewing bearing for a radar turntable system, comprising a slewing bearing outer ring 1 and a slewing bearing inner ring 6, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected to each other, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected through a rolling body 2, a gap is formed at the connection between the slewing bearing outer ring 1 and the slewing bearing inner ring 6, an annular groove is provided at the top of the gap at the slewing bearing outer ring 1, a water groove 10 which is concave downward is provided in an annular groove on the slewing bearing outer ring 1, a through hole is vertically provided in the slewing bearing outer ring 1, and a water channel 11 for drainage is provided between the through hole and the water groove 10.

[0023] For example 2, please refer to Figure 1-2 As shown, the utility model is a slewing bearing for a radar turntable system, comprising a slewing bearing outer ring 1 and a slewing bearing inner ring 6, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected to each other, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected through a rolling body 2, a gap is formed at the connection between the slewing bearing outer ring 1 and the slewing bearing inner ring 6, an annular groove is provided at the top of the gap at the slewing bearing outer ring 1, a water groove 10 which is concave downward is provided in an annular groove on the slewing bearing outer ring 1, a through hole is vertically provided in the slewing bearing outer ring 1, and a water channel 11 for drainage is provided between the through hole and the water groove 10.

[0024] A first seal 4 is provided on the side wall of the slewing bearing inner ring 6 at the annular groove. The first seal 4 is an annular structure. The inner ring of the first seal 4 is connected to the slewing bearing inner ring 6. The outer ring of the first seal 4 is tilted downward and frictionally contacts the annular groove. The first seal 4 is used to block the liquid in the annular groove.

[0025] For example 3, please refer to Figure 1-2As shown, the utility model is a slewing bearing for a radar turntable system, comprising a slewing bearing outer ring 1 and a slewing bearing inner ring 6, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected to each other, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected through a rolling body 2, a gap is formed at the connection between the slewing bearing outer ring 1 and the slewing bearing inner ring 6, an annular groove is provided at the top of the gap at the slewing bearing outer ring 1, a water groove 10 which is concave downward is provided in an annular groove on the slewing bearing outer ring 1, a through hole is vertically provided in the slewing bearing outer ring 1, and a water channel 11 for drainage is provided between the through hole and the water groove 10.

[0026] A first seal 4 is provided on the side wall of the slewing bearing inner ring 6 at the annular groove. The first seal 4 is an annular structure. The inner ring of the first seal 4 is connected to the slewing bearing inner ring 6. The outer ring of the first seal 4 is tilted downward and frictionally contacts the annular groove. The first seal 4 is used to block the liquid in the annular groove.

[0027] A second seal 5 is provided in the gap near the first seal 4 . The second seal 5 is an annular structure. The inner ring of the second seal 5 is connected to the slewing bearing inner ring 6 , and the outer ring of the second seal 5 is in friction contact with the slewing bearing outer ring 1 .

[0028] In another embodiment, the cross-sectional shape of the second sealing member 5 is a "Y" shape.

[0029] For example 3, please refer to Figure 1-2 As shown, the utility model is a slewing bearing for a radar turntable system, comprising a slewing bearing outer ring 1 and a slewing bearing inner ring 6, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected to each other, the slewing bearing outer ring 1 and the slewing bearing inner ring 6 are rotatably connected through a rolling body 2, a gap is formed at the connection between the slewing bearing outer ring 1 and the slewing bearing inner ring 6, an annular groove is provided at the top of the gap at the slewing bearing outer ring 1, a water groove 10 which is concave downward is provided in an annular groove on the slewing bearing outer ring 1, a through hole is vertically provided in the slewing bearing outer ring 1, and a water channel 11 for drainage is provided between the through hole and the water groove 10.

[0030] The side wall of the slewing bearing inner ring 6 is provided with a first seal 4 at the annular groove. The first seal 4 is an annular structure. The inner ring of the first seal 4 is connected to the slewing bearing inner ring 6. The outer ring of the first seal 4 is tilted downward to rub against the annular groove. The first seal 4 is used to block the liquid in the annular groove. In terms of waterproofing, the first seal 4 itself can prevent a part of the water from directly entering the slewing bearing raceway. In order to prevent some water drops from penetrating into the slewing bearing raceway, a water groove 10 is designed on the fitting surface of the slewing bearing sealing strip, and several water channels 11 are designed to dredge the water to the designated area.

[0031] A second seal 5 is provided in the gap near the first seal 4. The second seal 5 is an annular structure. The inner ring of the second seal 5 is connected to the inner ring 6 of the slewing bearing, and the outer ring of the second seal 5 is in friction contact with the outer ring 1 of the slewing bearing. The cross-sectional shape of the second seal 5 is a "Y" shape. In terms of dust prevention, the raceway is protected from dust by adding a second seal 5 on the raceway surface.

[0032] A third sealing member 7 is provided at the bottom of the inner wall of the slewing bearing inner ring 6. The third sealing member 7 is an annular structure and also has a dustproof effect.

[0033] A fourth sealing member 12 is disposed in the gap below the rolling element 2 , and the fourth sealing member 12 is an annular structure.

[0034] A groove 9 is provided at the bottom of the inner ring 6 of the slewing bearing, and the groove 9 is used to fill the shock-absorbing material. The shock-absorbing material can be a rubber shock-absorbing strip. When the slewing bearing is working, it is required to have a shock-absorbing effect after the slewing installation, small up and down floating, and stable overall structure. Therefore, a groove 9 is provided in the inner ring, and after being installed with the host platform, a rubber shock-absorbing strip is installed in the groove 9.

[0035] In another embodiment, the groove 9 is an annular structure.

[0036] In another embodiment, the inner wall of the slewing bearing inner ring 6 is bent inward in multiple sections to form a bent inclined surface. The slewing bearing is required to be tightly installed with the host system. In addition to the ordinary bolt connection, the inclined surface set on the inner ring will be more tightly installed with the host platform.

[0037] The surface treatment method of hot zinc spraying and painting can be used to make the slewing bearing have good salt spray and mildew resistance.

[0038] An oil nozzle 8 is also provided at the inner ring 6 of the slewing bearing.

[0039] The slewing bearing needs to use a special BLR-M bearing grease, which has good mechanical stability, can maintain good consistency during use, and can be used for a long time; the grease has excellent water resistance and rust prevention properties, and can maintain good lubricity and corrosion resistance in a water environment.

[0040] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the claims of the utility model.

Claims

1. A slewing bearing for a radar turntable system, comprising a slewing bearing outer ring (1) and a slewing bearing inner ring (6), wherein the slewing bearing outer ring (1) and the slewing bearing inner ring (6) are rotatably connected to each other, and characterized in that: A gap is formed at the connection between the slewing bearing outer ring (1) and the slewing bearing inner ring (6); an annular groove is provided at the top of the gap at the slewing bearing outer ring (1); a water channel (10) which is recessed downward is provided in an annular manner on the slewing bearing outer ring (1) and located on the annular groove; a through hole is vertically provided in the slewing bearing outer ring (1); and a water channel (11) for draining liquid is provided between the through hole and the water channel (10).

2. The slewing bearing for a radar turntable system according to claim 1, characterized in that: A first seal (4) is arranged on the side wall of the inner ring (6) of the slewing bearing at the annular groove. The first seal (4) is an annular structure. The inner ring of the first seal (4) is connected to the inner ring (6) of the slewing bearing. The outer ring of the first seal (4) is inclined downward to frictionally contact the annular groove. The first seal (4) is used to block the liquid in the annular groove.

3. The slewing bearing for a radar turntable system according to claim 2, characterized in that: A second seal (5) is arranged in the gap near the first seal (4); the second seal (5) is an annular structure; the inner ring of the second seal (5) is connected to the inner ring (6) of the slewing bearing; and the outer ring of the second seal (5) is in frictional contact with the outer ring (1) of the slewing bearing.

4. The slewing bearing for a radar turntable system according to claim 3 is characterized in that: The cross-sectional shape of the second sealing member (5) is a "Y" shape.

5. The slewing bearing for a radar turntable system according to claim 1, characterized in that: A third sealing member (7) is arranged at the bottom of the inner wall of the slewing bearing inner ring (6), and the third sealing member (7) is an annular structure.

6. The slewing bearing for a radar turntable system according to claim 1, characterized in that: A fourth sealing member (12) is arranged in the gap below the rolling body (2), and the fourth sealing member (12) is an annular structure.

7. The slewing bearing for a radar turntable system according to claim 1, characterized in that: A groove (9) is provided at the bottom of the slewing bearing inner ring (6), and the groove (9) is used to fill with shock-absorbing material.

8. The slewing bearing for a radar turntable system according to claim 7, characterized in that: The groove (9) is an annular structure.

9. A slewing bearing for a radar turntable system according to any one of claims 1 to 8, characterized in that: The inner wall of the slewing bearing inner ring (6) is bent inwardly in multiple sections to form a bent inclined surface.

10. A slewing bearing for a radar turntable system according to any one of claims 1 to 8, characterized in that: The slewing bearing outer ring (1) and the slewing bearing inner ring (6) are rotatably connected via rolling bodies (2).

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