Multi-row rolling cone and roller mixed slewing bearing

Abstract

The invention discloses a multi-row rolling cone and roller mixed slewing bearing. The slewing bearing comprises a rolling body, an oil cup, a plug, a taper pin, a sealing strip I, an outer ring, a sealing strip II and an inner ring, the outer ring and the inner ring are located on the two sides of the rotary support respectively, the rolling body is located between the outer ring and the inner ring, an oil cup is arranged on the side wall of the inner ring, a plug is arranged on one side of the inner ring, mounting holes are formed in the inner ring and the outer ring, and the mounting holes are connected with external equipment through bolts, so that operation of the equipment is guaranteed, and the service life of the equipment is prolonged. The outer side of the inner ring and the outer side of the outer ring are each provided with a first sealing strip and a second sealing strip in a clamped mode, the first sealing strips and the second sealing strips are used for keeping storage of product lubricating grease and preventing invasion of external dust, water stains and foreign matter, and the taper pin is located on the outer ring. Compared with the prior art, the bearing has the advantages that the number of the rolling bodies can be increased, the load on each rolling body can be reduced, and the bearing capacity of the bearing is improved.

Description

Technical Field

[0001] The present invention relates to the field of slewing bearings, in particular to a multi-row cone-roller hybrid slewing bearing. Background Art

[0002] A slewing bearing is a large bearing that can withstand comprehensive loads. It can simultaneously withstand large axial and radial loads and overturning moments. Commonly used slewing bearings are installed by combining rollers and balls.

[0003] Due to the large size of some existing roller-ball hybrid slewing bearings, the gap between the outer ring and the inner ring is large after they are installed. This can easily lead to dust and debris entering the interior of the rollers and balls, affecting the service life of the slewing bearing. At the same time, the process of sealing the gap between the two rings of some existing roller-ball hybrid slewing bearings is complicated, making it difficult to quickly install and disassemble. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a hybrid slewing bearing device which can increase the number of rolling elements, reduce the load on each rolling element, and improve the bearing capacity of the bearing.

[0005] In order to solve the above problems, the technical solution of the present invention is: a multi-row roller cone hybrid slewing bearing, the slewing bearing comprising rolling elements, an oil cup, a plug, a taper pin, a first sealing strip, an outer ring, a second sealing strip and an inner ring;

[0006] The outer ring and the inner ring are respectively located on both sides of the slewing support, the rolling element is located between the outer ring and the inner ring, and an oil cup is provided on the side wall of the inner ring. A plug is provided on one side of the inner ring. Mounting holes are provided on both the inner ring and the outer ring. The mounting holes are connected to external equipment through bolts to ensure the operation of the equipment. The outer sides of the inner ring and the outer ring are both clamped with sealing strips 1 and 2. The sealing strips 1 and 2 are used to maintain the storage of product grease and prevent the invasion of external dust, water stains and foreign matter. The tapered pin is located on the outer ring.

[0007] Furthermore, a gear ring is provided on the outer side of the slewing bearing for driving the rotation.

[0008] Furthermore, the rolling elements adopt a structural design that is a mixture of cone rollers and cylindrical roller raceways. The tapered roller 1, the tapered roller 2, and the cylindrical roller increase the number of rolling elements under the same support diameter, reduce the contact stress between the rolling elements and the raceways, and improve the bearing capacity of the support. The tapered roller 1 and the tapered roller 2 are distributed on the upper and lower sides, and the apex of the tapered rollers intersects at the rotation axis of the support, which can eliminate sliding during operation.

[0009] The advantages of the present invention compared with the existing technology are:

[0010] Compared with the traditional bearing, the present invention increases the number of rolling elements, which can reduce the load on each rolling element, improve the bearing capacity of the bearing, eliminate the sliding phenomenon generated during operation, make the bearing operation more stable, and improve the bearing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a three-dimensional multi-row roller cone roller hybrid slewing bearing of the present invention. Figure 1 .

[0012] Figure 2 This is a three-dimensional multi-row roller cone roller hybrid slewing bearing of the present invention. Figure 2 .

[0013] As shown in the figure: 1. Rolling element; 2. Oil cup; 3. Plug; 4. Taper pin; 5. Sealing strip 1; 6. Outer ring; 7. Sealing strip 2; 8. Inner ring; 9. Tapered roller 1; 10. Tapered roller 2; 11. Cylindrical roller. DETAILED DESCRIPTION

[0014] The specific embodiments of the present invention are further described below with reference to the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0015] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0016] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0017] like Figures 1 to 2 As shown, a multi-row roller-cone hybrid slewing bearing comprises a rolling element 1, an oil cup 2, a plug 3, a tapered pin 4, a sealing strip 5, an outer ring 6, a sealing strip 2 7 and an inner ring 8; the outer ring 6 and the inner ring 8 are respectively located on both sides of the slewing support, the rolling element 1 is located between the outer ring 6 and the inner ring 8, and an oil cup 2 is provided on the side wall of the inner ring 8, and a plug 3 is provided on one side of the inner ring 8. The inner ring 8 and the outer ring 6 are both provided with mounting holes, and the mounting holes are connected to external equipment by bolts to ensure the operation of the equipment. The outer sides of the inner ring 8 and the outer ring 6 are both clamped with sealing strips 5 and 7, and the sealing strips 1 5 and 2 7 are used to maintain the storage of product grease and prevent the invasion of external dust, water stains and foreign matter. The tapered pin 4 is located on the outer ring 6, and a gear ring is provided on the outer side of the slewing bearing for driving rotation.

[0018] During specific use, the rolling element 1 adopts a structural design that combines cone and roller raceways. The tapered roller 1 9, the tapered roller 2 10, and the cylindrical roller 11 increase the number of rolling elements under the same support diameter, reduce the contact stress between the rolling element and the raceway, and improve the support bearing capacity. The tapered roller 1 9 and the tapered roller 2 10 are distributed on the upper and lower sides, and the apex of the tapered roller intersects at the rotation axis of the support, which can eliminate sliding during operation.

[0019] In specific use, the tapered rollers 1 9 and 10 are matched between the outer ring 6 and the inner ring 9, and are distributed on the upper and lower sides. This increases the number of rolling elements under the same support diameter, reduces the contact stress between the rolling elements and the raceway, and improves the support bearing capacity. During the specific installation process, the apexes of the tapered rollers 1 9 and 10 intersect at the axis of rotation of the support, which can eliminate slippage during operation, making it more practical.

[0020] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A multi-row tapered roller hybrid slewing bearing, characterized by: The slewing bearing comprises a rolling element (1), an oil cup (2), a plug (3), a taper pin (4), a sealing strip 1 (5), an outer ring (6), a sealing strip 2 (7) and an inner ring (8); The outer ring (6) and the inner ring (8) are respectively located on both sides of the slewing support, the rolling body (1) is located between the outer ring (6) and the inner ring (8), and an oil cup (2) is provided on the side wall of the inner ring (8), and a plug (3) is provided on one side of the inner ring (8). The inner ring (8) and the outer ring (6) are both provided with mounting holes, and the mounting holes are connected to external equipment through bolts to ensure the operation of the equipment. The outer sides of the inner ring (8) and the outer ring (6) are both clamped with sealing strips 1 (5) and 2 (7). The sealing strips 1 (5) and 2 (7) are used to maintain the storage of product grease and prevent the invasion of external dust, water stains and foreign matter. The taper pin (4) is located on the outer ring (6).

2. The multi-row tapered roller hybrid slewing bearing according to claim 1, characterized in that: A gear ring is provided on the outer side of the slewing bearing for driving the rotation.

3. The multi-row tapered roller hybrid slewing bearing according to claim 1, characterized in that: The rolling element (1) adopts a structural design that combines a cone and a roller raceway. The conical roller (9), the conical roller (10), and the cylindrical roller (11) increase the number of rolling elements under the same support diameter, reduce the contact stress between the rolling element and the raceway, and improve the support bearing capacity. The conical roller (9) and the conical roller (10) are distributed on the upper and lower sides, and the apex of the conical roller intersects with the rotation axis of the support, which can eliminate sliding during operation.

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