A bearing resistant to high temperature and harsh working conditions

Abstract

This utility model relates to the field of bearing technology, specifically to a high-temperature resistant bearing for harsh working conditions. To address the high cost associated with existing technologies that innovate bearing materials to adapt to high-temperature conditions, two threaded holes are provided on the outer ring of the bearing. The axes of these two threaded holes are coplanar with the axis of the outer ring, and the two threaded holes are located on opposite sides of the outer ring groove. Corresponding grease tubes are threaded into each of the two threaded holes, and these grease tubes are connected to a grease injection pump and a grease extraction pump, respectively. The cage has through-holes for grease flow. As the cage rotates, the clearance between the rollers and raceways at different positions moves to the threaded holes. The two pumps simultaneously inject and extract grease from the internal grease through the two grease tubes, replacing the high-temperature grease with a low-temperature grease, reducing the internal temperature of the bearing, eliminating the need for the bearing material to withstand high temperatures, and extending the overall lifespan of the bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a bearing resistant to high temperatures and harsh working conditions. Background Technology

[0002] With the accelerating pace of global industrialization, many industrial sectors are moving towards larger scale, higher efficiency, and continuous operation. In the steel industry, to improve production efficiency, converter capacity is constantly increasing, resulting in higher molten steel temperatures and more compact smelting cycles. The furnace tilting mechanism must withstand more frequent and severe impacts and high-temperature radiation. The rolling mill aims to produce thinner and wider plates, subjecting work roll bearings to instantaneous higher temperatures and greater rolling forces. In the petrochemical industry, to meet energy demands, the throughput of oil refining units continues to rise. The media transported by the bottom pumps of atmospheric and vacuum distillation towers are at higher temperatures and are more corrosive. These industrial developments and changes have led to increasingly extreme operating conditions for equipment, making ordinary bearings insufficient and creating an urgent need for bearings resistant to high temperatures and harsh operating conditions.

[0003] Existing technologies innovate bearing materials to adapt to high-temperature conditions, such as silicon nitride, nickel-based superalloys, and other ceramic and alloy materials. However, these materials are expensive. The production cost of silicon nitride ceramics can be several times or even dozens of times that of ordinary bearing steel, resulting in a very high cost. Utility Model Content

[0004] In order to solve the technical problem that existing technologies require innovative bearing materials to adapt to high-temperature working conditions, but the cost is high, this utility model provides a bearing that can withstand high-temperature and harsh working conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant bearing for harsh working conditions, comprising: an outer ring of the bearing, a cage and an inner ring of the bearing are concentrically arranged inside the outer ring, rollers are evenly distributed on the inner circumference of the cage, the two sides of the rollers are located in the grooves of the outer and inner rings of the bearing, two threaded holes are opened on the outer ring of the bearing, the axes of the two threaded holes are on the same plane as the axis of the outer ring of the bearing, the two threaded holes are respectively located on both sides of the grooves of the outer ring of the bearing, the two threaded holes are respectively threaded to corresponding grease tubes, the two grease tubes are respectively connected to a grease injection pump and a grease extraction pump, and the cage is provided with through holes for grease to flow.

[0006] Preferably, sealing grooves are provided at the contact points between the outer ring of the bearing and the cage, and between the inner ring of the bearing and the cage, and sealing gaskets are provided in the sealing grooves.

[0007] Preferably, the through holes are located on both sides of the roller.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] As the cage rotates, the clearance between the rollers and the raceway at different positions moves to the threaded hole. Two pumps then simultaneously inject and extract grease through two grease tubes, replacing the high-temperature grease with low-temperature grease. This reduces the internal temperature of the bearing, eliminating the need for the bearing material to withstand high temperatures and extending the overall lifespan of the bearing.

[0010] The cage's through holes are located on both sides of the rollers. As the rollers rotate, they carry the grease from the outer ring of the bearing into the inner ring, and then carry the high-temperature grease from the inner ring to the outside, thereby improving the cooling effect by enhancing the fluidity of the grease. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0012] Figure 2 This is a schematic cross-sectional view of the structure of this utility model. Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0014] Figure 4 This is a schematic cross-sectional view of the structure of this utility model. Figure 2 .

[0015] In the diagram: 1. Bearing outer ring; 2. Cage; 3. Bearing inner ring; 4. Roller; 5. Threaded hole; 6. Grease tube; 7. Through hole; 8. Sealing groove; 9. Sealing gasket. Detailed Implementation

[0016] 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.

[0017] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] The following is in conjunction with the appendix Figure 1-4This embodiment describes a high-temperature, harsh-condition bearing, comprising: an outer ring 1; a cage 2 and an inner ring 3 concentrically arranged within the outer ring 1; rollers 4 evenly distributed around the inner circumference of the cage 2; the rollers 4 located on both sides within the grooves of the outer ring 1 and the inner ring 3; two threaded holes 5 on the outer ring 1; the axes of the two threaded holes 5 and the axis of the outer ring 1 lying on the same plane; the two threaded holes 5 located on both sides of the grooves of the outer ring 1; and corresponding grease tubes 6 threadedly connected to the two threaded holes 5; the two grease tubes 6 being connected to a grease injection pump and a grease extraction pump, respectively; and a through hole 7 on the cage 2 allowing grease to flow.

[0020] During assembly, the outer ring 1 of the bearing is installed into the bearing housing, and the threaded hole 5 is aligned with the hole on the bearing housing. After assembly, the two grease tubes 6 are screwed into the threaded hole 5 through the bearing housing hole, so that the gap between the roller 4 and the raceway inside the bearing is connected to the outside through the grease tubes 6. Under the limiting action of the grease tubes 6 and the bearing housing, the outer ring 1 of the bearing will not vibrate and rotate loose inside the bearing housing, thus better resisting severe vibration conditions. As the cage 2 rotates, the gap between the roller 4 and the raceway at different positions moves to the threaded hole 5. The grease injection pump and the grease extraction pump are used to simultaneously inject and extract the grease inside the bearing through the two grease tubes 6, replacing the high-temperature grease with low-temperature grease. The grease in the outer ring 1 and the inner ring 3 of the bearing flows through the through hole 7, reducing the internal temperature of the bearing, eliminating the need for the bearing material to withstand high temperatures, and extending the overall life of the bearing.

[0021] A sealing groove 8 is provided at the contact position between the outer ring 1 of the bearing and the cage 2, and the inner ring 3 of the bearing and the cage 2. A sealing gasket 9 is provided in the sealing groove 8.

[0022] The sealing gasket 9 prevents grease leakage and improves bearing lubrication.

[0023] Through holes 7 are located on both sides of roller 4.

[0024] As the through hole 7 rotates, the grease inside the outer ring 1 of the bearing is carried into the inner ring 3 of the bearing, and the high-temperature grease inside the inner ring 3 of the bearing is carried to the outer ring 1 of the bearing, thereby improving the cooling effect by enhancing the fluidity of the grease.

[0025] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing resistant to high temperatures and harsh operating conditions, comprising: The bearing has an outer ring (1), and a cage (2) and an inner ring (3) are concentrically arranged inside the outer ring (1). Rollers (4) are evenly distributed on the inner circumference of the cage (2), and the two sides of the rollers (4) are located in the grooves of the outer ring (1) and the inner ring (3). The bearing is characterized in that: two threaded holes (5) are provided on the outer ring (1) of the bearing, the axis of the two threaded holes (5) is on the same plane as the axis of the outer ring (1) of the bearing, the two threaded holes (5) are respectively located on both sides of the groove of the outer ring (1) of the bearing, the two threaded holes (5) are respectively threaded to corresponding grease tubes (6), the two grease tubes (6) are respectively connected to the grease injection pump and the grease extraction pump, and the cage (2) is provided with through holes (7) through which grease can flow.

2. The high-temperature resistant bearing for harsh working conditions according to claim 1, characterized in that: Sealing grooves (8) are provided at the positions where the outer ring (1) of the bearing contacts the cage (2) and the inner ring (3) of the bearing contacts the cage (2), and sealing gaskets (9) are provided in the sealing grooves (8).

3. The high-temperature resistant bearing for harsh working conditions according to claim 1, characterized in that: The through hole (7) is located on both sides of the roller (4).

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