Slewing bearing with sealing structure

Abstract

The utility model discloses a slewing bearing with a sealing structure, which relates to the technical field of slewing bearings and comprises an outer ring, an inner ring arranged on the inner side of the outer ring, a sealing ring arranged between the outer ring and the inner ring, and a sealing mechanism arranged on the outer ring and the sealing ring. The sealing mechanism comprises a butt joint unit and a limiting unit; the butt joint unit is used for increasing the connection force between the sealing ring and the outer ring as well as the inner ring; the limiting unit is used for limiting the butt joint unit. By arranging the sealing mechanism, when the sealing ring, the inner ring and the outer ring are installed and fixed, the first butt-joint ring and the second butt-joint ring on the sealing ring can extend to the position between the inner ring and the outer ring, the second butt-joint ring gives pushing force to the movable rod, the movable rod drives the abutting block to act on the outer wall of the first butt-joint ring, and therefore the abutting block can abut against the outer wall of the first butt-joint ring. The connecting force between the sealing ring and the inner ring and the outer ring is further increased, and the sealing ring is prevented from aging and disengaging.

Description

Technical Field

[0001] This utility model relates to the field of slewing bearing technology, specifically a slewing bearing with a sealing structure. Background Technology

[0002] Slewing bearings are a new type of mechanical component. They consist of inner and outer rings, rolling elements, etc. Slewing bearings are large bearings that can withstand comprehensive loads, including large axial and radial loads and overturning moments.

[0003] In the prior art, a sealing ring is provided between the inner and outer rings of the slewing bearing to protect the balls between them. However, during long-term use, the aging of the sealing ring can cause it to detach from the inner and outer rings of the slewing bearing, allowing dust to enter between the inner and outer rings and act on the balls, resulting in increased friction. Therefore, this utility model proposes a slewing bearing with a sealing structure. Utility Model Content

[0004] The purpose of this utility model is to provide a slewing bearing with a sealing structure in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a slewing bearing with a sealing structure, including an outer ring, an inner ring disposed on the inner side of the outer ring, a sealing ring disposed between the outer ring and the inner ring, and a sealing mechanism disposed on the outer ring and the sealing ring;

[0006] The sealing mechanism includes a docking unit and a limiting unit;

[0007] The docking unit is used to increase the connection force between the sealing ring and the outer and inner rings;

[0008] The limiting unit is used to limit the docking unit.

[0009] As a further embodiment of this utility model: the docking unit includes a first docking ring and a second docking ring;

[0010] The first mating ring is fixed to the bottom end of the sealing ring, and the first mating ring is used to increase the connection force between the sealing ring and the outer ring;

[0011] The second mating ring is fixed to the bottom end of the sealing ring, and the second mating ring is used to provide the moving rod with a squeezing thrust.

[0012] As a further improvement of this utility model: the limiting unit includes a guide groove, a movable rod, and a stop block;

[0013] The guide groove is formed on the inner side of the outer ring, and the guide groove is used to guide the axial movement of the movable rod;

[0014] The movable rod is axially slidably mounted on the inner wall of the guide groove and extends to the outside of the guide groove. The movable rod is used to drive the abutment block to move synchronously.

[0015] The abutment block is fixed to the top of the movable rod, and the abutment block is used to apply a squeezing thrust to the first docking ring.

[0016] As a further improvement of this utility model: the outer wall of the guide groove is generally L-shaped, and the inner side of the guide groove matches the outer wall of the end of the movable rod.

[0017] As a further improvement of this utility model: the outer wall of the movable rod and the abutment block is generally in the shape of an "F" shape, and the abutment block is located on one side of the first docking ring when it is not moved.

[0018] As a further embodiment of this utility model: the inner side of the outer ring is formed with a docking groove for the first docking ring to dock, and the abutment block is located in the docking groove.

[0019] As a further improvement of this utility model: the outer wall of the inner ring is formed with a "C"-shaped groove for the sealing ring to be inserted, and the bottom end of the second mating ring near the movable rod is inclined.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By setting a sealing mechanism, when the sealing ring is installed and fixed with the inner and outer rings, the first and second mating rings on the sealing ring will extend between the inner and outer rings. The second mating ring will provide a thrust to the movable rod, causing the movable rod to drive the abutment block to act on the outer wall of the first mating ring, further increasing the connection force between the sealing ring and the inner and outer rings, and preventing the sealing ring from aging and falling off. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the internal structure of the outer and inner rings of this utility model;

[0024] Figure 3 This is a partial enlarged view of point A of this utility model.

[0025] In the diagram: 1. Outer ring; 2. Inner ring; 3. Sealing ring; 4. Sealing mechanism; 401. First mating ring; 402. Second mating ring; 403. Guide groove; 404. Movable rod; 405. Abutment block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-3 In this embodiment of the present invention, a slewing bearing with a sealing structure includes an outer ring 1, an inner ring 2 disposed on the inner side of the outer ring 1, a sealing ring 3 disposed between the outer ring 1 and the inner ring 2, and a sealing mechanism 4 disposed on the outer ring 1 and the sealing ring 3.

[0028] The sealing mechanism 4 includes a docking unit and a limiting unit;

[0029] The docking unit is used to increase the connection force between the sealing ring 3 and the outer ring 1 and the inner ring 2;

[0030] The limiting unit is used to limit the movement of the docking unit;

[0031] The docking unit includes a first docking ring 401 and a second docking ring 402;

[0032] The first mating ring 401 is fixed to the bottom end of the sealing ring 3. The first mating ring 401 is used to increase the connection force between the sealing ring 3 and the outer ring 1.

[0033] The second docking ring 402 is fixed to the bottom end of the sealing ring 3. The second docking ring 402 is used to give the movable rod 404 a squeezing thrust.

[0034] The limiting unit includes a guide groove 403, a movable rod 404, and a stop block 405;

[0035] The guide groove 403 is formed on the inner side of the outer ring 1, and the guide groove 403 is used to guide the axial movement of the movable rod 404;

[0036] The movable rod 404 is axially slidably mounted on the inner wall of the guide groove 403 and extends to the outside of the guide groove 403. The movable rod 404 is used to drive the abutment block 405 to move synchronously.

[0037] The stop block 405 is fixed to the top of the movable rod 404, and the stop block 405 is used to give the first docking ring 401 a squeezing thrust.

[0038] In this embodiment: When using this device, by inserting the sealing ring 3 between the outer ring 1 and the inner ring 2, the first mating ring 401 at the bottom of the sealing ring 3 will extend into the mating groove inside the outer ring 1, while the second mating ring 402 will extend between the outer ring 1 and the inner ring 2. The end of the sealing ring 3 near the inner ring 2 enters the "C"-shaped groove on the outer wall of the inner ring 2. Then, the sealing ring 3 entering between the outer ring 1 and the inner ring 2 provides a thrust to the end of the movable rod 404 through the second mating ring 402, causing the movable rod 404 to move axially under force. The movable rod 404 will drive the abutment block 405 on the outer wall to move synchronously, so that the outer wall of the abutment block 405 contacts the outer wall of the first docking ring 401, and squeeze the bottom part of the first docking ring 401 into the corner inlet position of the guide groove 403 to position the first docking ring 401. The "C" groove on the inner ring 2 makes it difficult for the sealing ring 3 to drive the second docking ring 402 to move out. It cooperates with the first docking ring 401 that enters the guide groove 403 to seal and position the sealing ring 3, further improving the connection force of the sealing ring 3.

[0039] Please refer to this carefully. Figures 1-3 The outer wall of the guide groove 403 is generally L-shaped. The inner side of the guide groove 403 matches the outer wall of the end of the movable rod 404. The outer walls of the movable rod 404 and the abutment 405 are generally F-shaped. The abutment 405 is located on one side of the first docking ring 401 when it is not moved. The inner side of the outer ring 1 is formed with a docking groove for the first docking ring 401 to dock. The abutment 405 is located in the docking groove. The outer wall of the inner ring 2 is formed with a C-shaped groove for the sealing ring 3 to be inserted. The bottom end of the second docking ring 402 is inclined at the end near the movable rod 404.

[0040] In this embodiment: With this structure, when the movable rod 404 is subjected to force and moves axially, the movable rod 404 will give the first docking ring 401 located on one side a squeezing thrust, so that the bottom end of the first docking ring 401 is deformed into an "L" shape, so that the end of the first docking ring 401 enters the guide groove 403, thus completing the limiting of the first docking ring 401.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A slewing bearing with a sealing structure, comprising an outer ring (1), an inner ring (2) disposed on the inner side of the outer ring (1), and a sealing ring (3) disposed between the outer ring (1) and the inner ring (2), characterized in that, A sealing mechanism (4) is provided on the outer ring (1) and the sealing ring (3); The sealing mechanism (4) includes a docking unit and a limiting unit; The docking unit is used to increase the connection force between the sealing ring (3) and the outer ring (1) and the inner ring (2); The limiting unit is used to limit the docking unit.

2. A slewing bearing with a sealing structure according to claim 1, characterized in that, The docking unit includes a first docking ring (401) and a second docking ring (402); The first mating ring (401) is fixed at the bottom end of the sealing ring (3). The first mating ring (401) is used to increase the connection force between the sealing ring (3) and the outer ring (1). The second docking ring (402) is fixed to the bottom end of the sealing ring (3), and the second docking ring (402) is used to give the movable rod (404) a squeezing thrust.

3. A slewing bearing with a sealing structure according to claim 2, characterized in that, The limiting unit includes a guide groove (403), a movable rod (404), and a stop block (405); The guide groove (403) is formed on the inner side of the outer ring (1), and the guide groove (403) is used to guide the axial movement of the movable rod (404); The movable rod (404) is axially slidably mounted on the inner wall of the guide groove (403) and extends to the outside of the guide groove (403). The movable rod (404) is used to drive the abutment block (405) to move synchronously. The abutment (405) is fixed to the top of the movable rod (404), and the abutment (405) is used to give the first docking ring (401) a squeezing thrust.

4. A slewing bearing with a sealing structure according to claim 3, characterized in that, The outer wall of the guide groove (403) is generally L-shaped, and the inner side of the guide groove (403) matches the outer wall of the end of the movable rod (404).

5. A slewing bearing with a sealing structure according to claim 3, characterized in that, The outer walls of the movable rod (404) and the abutment block (405) are generally in an "F" shape. When the abutment block (405) is not moved, it is located on one side of the first docking ring (401).

6. A slewing bearing with a sealing structure according to claim 3, characterized in that, The inner side of the outer ring (1) is formed with a docking groove for docking with the first docking ring (401), and the abutment block (405) is located in the docking groove.

7. A slewing bearing with a sealing structure according to claim 2, characterized in that, The outer wall of the inner ring (2) is formed with a "C"-shaped groove for the sealing ring (3) to be inserted, and the bottom end of the second mating ring (402) near the movable rod (404) is in an inclined state.

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