Blockage sealing structure of slewing bearing

Abstract

The utility model discloses a blocking and sealing structure of a slewing bearing, and belongs to the technical field of slewing bearings. A plug with an end face annular groove is arranged on one side of the outer ring, an O-shaped ring is arranged in the annular groove of the plug, the plug is connected with the outer ring through a taper pin, the inner ring is arranged on the inner side face of the outer ring, a roller path is formed in the middle of the outer ring and the middle of the inner ring, a rolling body is arranged in the roller path, and a sealing strip is arranged between the outer ring and the inner ring. The end face of the inner ring is provided with an oil hole, the oil hole is communicated with the roller path, the end opening of the oil hole is provided with an oil cup, and the oil cup is fixedly inserted into one side of the inner ring. The O-shaped ring is additionally arranged on the end face of the plug, and certain axial pressure is formed on the O-shaped ring after the taper pin is assembled, so that when the pressure of internal grease rises, a stronger sealing effect is obtained; the main body is simple in structure and convenient to use and has great popularization and application values.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing blocking sealing structure. Background Art

[0002] The plugging position of the slewing bearing generally does not use a sealing device. Even if a sealing device is used, an O-ring is added to the outer cylindrical surface of the plug, which is easy to damage during assembly and difficult to install, making it difficult to seal effectively. As the application field of slewing bearings becomes wider and wider, the required working conditions become more and more complicated, and the structural requirements for slewing bearings are also increasing. The existing standard structure of slewing bearings cannot meet the needs under specific working conditions. Some slewing bearings use thin oil lubrication inside or need to be immersed in water outside. Therefore, a new plugging sealing method is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a slewing bearing plugging and sealing structure, which has a simple structure and is easy to use. While the installation dimensions are consistent with industry standards, only the dimensions of the slewing bearing plugging and the matching hole are changed, thereby ensuring the customer's special working conditions and installation structure requirements, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slewing bearing plugging sealing structure, comprising an inner ring and an outer ring, a plug of an end face annular groove is arranged on one side of the outer ring, an O-ring is arranged in the annular groove of the plug, the plug is connected to the outer ring through a tapered pin, an inner ring is arranged on the inner side surface of the outer ring, a raceway is formed between the inner ring and the middle part of the outer ring, a rolling body is arranged inside the raceway, a sealing strip is arranged between the inner ring and the outer ring, the inner ring and the outer ring are sealed to each other through the sealing strip, an oil hole is opened on the end face of the inner ring, the oil hole and the raceway are connected to each other, an oil cup is arranged at the port of the oil hole, and the oil cup is fixedly inserted on one side of the inner ring.

[0005] Preferably, the rolling element is a steel ball or a roller, and the internal roller type is a single-row ball type, a double-row ball type, a single-row cross-roller type, or a double-row cross-roller type.

[0006] Preferably, the oil cup is arranged on any surface of the inner ring or the outer ring.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0008] The slewing bearing plugging sealing structure, by adding an O-ring on the plugging end face, forms a certain axial pressure on the O-ring after the tapered pin is assembled, so that when the internal grease pressure rises, a stronger sealing effect is obtained. The overall structure is simple and easy to use. While the installation dimensions are consistent with the industry standards, only the dimensions of the slewing bearing plug and the matching hole are changed, which ensures the customer's special working conditions and installation structure requirements, and has great promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0010] In the figure: 1. Inner ring; 2. Oil cup; 3. Rolling element; 4. Sealing strip; 5. O-ring; 6. Taper pin; 7. Outer ring; 8. Blockage. DETAILED DESCRIPTION

[0011] 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 in 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.

[0012] See also Figure 1 A slewing bearing plugging seal structure in this embodiment includes an inner ring 1 and an outer ring 7. A plug 8 with an end face annular groove is provided on one side of the outer ring 7. An O-ring 5 is provided in the annular groove of the plug 8. The plug 8 is connected to the outer ring 7 through a tapered pin 6. The inner side surface of the outer ring 7 is provided with the inner ring 1. The inner ring 1 and the middle part of the outer ring 7 form a raceway. A rolling body 3 is provided inside the raceway, wherein the rolling body 3 can be a steel ball or a roller. When the rolling body 3 is a steel ball, the internal roller type is a single-row ball type, and the rolling body 3 can be a roller. The internal roller type can also be a double-row ball type, a single-row cross roller type or a double-row cross roller type.

[0013] In the above embodiment, a sealing strip 4 is provided between the inner ring 1 and the outer ring 7, and the inner ring 1 and the outer ring 7 are sealed with each other through the sealing strip 4. An oil hole is provided on the end face of the inner ring 1, and the oil hole is connected with the raceway. An oil cup 2 is provided at the port of the oil hole, and the oil cup 2 is fixedly inserted on one side of the inner ring 1. The oil cup 2 can be set on any surface of the inner ring 1 or the outer ring 7 according to needs, so as to adapt to different working conditions.

[0014] Working principle: The utility model provides a slewing bearing plugging sealing structure, which forms a certain axial pressure on the O-ring 5 after the cone pin 6 is assembled by adding an O-ring 5 on the end face of the plug 8, so that when the internal grease pressure rises, a stronger sealing effect is obtained.

[0015] In summary: the slewing bearing plugging and sealing structure has a simple main structure and is easy to use. While the installation dimensions are consistent with the industry standards, only the dimensions of the slewing bearing plugging and the matching holes are changed, ensuring the customer's special working conditions and installation structure requirements, and has great promotion and application value.

[0016] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0017] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slewing bearing plugging seal structure, comprising an inner ring (1) and an outer ring (7), characterized in that: A plug (8) with an end face annular groove is provided on one side of the outer ring (7), an O-ring (5) is provided in the annular groove of the plug (8), the plug (8) and the outer ring (7) are connected via a taper pin (6), an inner ring (1) is provided on the inner side of the outer ring (7), a raceway is formed between the inner ring (1) and the middle of the outer ring (7), a rolling body (3) is provided inside the raceway, a sealing strip (4) is provided between the inner ring (1) and the outer ring (7), the inner ring (1) and the outer ring (7) are sealed to each other via the sealing strip (4), an oil hole is provided on the end face of the inner ring (1), the oil hole and the raceway are connected to each other, an oil cup (2) is provided at the end of the oil hole, and the oil cup (2) is fixedly inserted on one side of the inner ring (1).

2. A slewing bearing plugging seal structure according to claim 1, characterized in that: The rolling body (3) is a steel ball or a roller, and the internal roller type is a single-row ball type, a double-row ball type, a single-row cross roller type, or a double-row cross roller type.

3. The slewing bearing plugging seal structure according to claim 1, characterized in that: The oil cup (2) is arranged on any surface of the inner ring (1) or the outer ring (7).

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