An oil lubrication device for a high-speed rotating bearing inside a bearing housing

Abstract

The present invention provides an oil lubrication device for a high-speed rotating bearing inside a bearing housing, which comprises a bearing housing. At each opening at both ends of the bearing housing, an oil guiding ring seat is installed. A bearing housing cover plate is installed on the outer side of the oil guiding ring seat. It is characterized in that: an oil baffle and oil dispersing plate for fixing with a rotating shaft is installed inside the oil guiding ring seat. The oil baffle and oil dispersing plate is arranged with a gap from the oil guiding ring seat, and the oil baffle and oil dispersing plate rotates relative to the oil guiding ring seat. The two oil baffle and oil dispersing plates are symmetrically arranged with the bearing installed inside the bearing housing as the symmetry center. An oil cavity is respectively formed between the oil guiding ring seats, the oil baffle and oil dispersing plates on both sides and the end face of the bearing housing; A three-way valve is installed on the bearing housing. The three-way valve has two oil guiding nozzles, and the two oil guiding nozzles are respectively communicated with the two oil cavities; It has good lubrication effect, simple structure and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid lubrication, and particularly relates to an oil lubrication device for a high-speed rotating bearing in a bearing housing. Background Art

[0002] Bearings are commonly used components in transmission mechanical structures. To enable them to obtain good working conditions and service life, a common method is to use circulating oil to lubricate the friction parts of the bearings during high-speed operation. Circulating lubrication can enable the bearings to obtain stable lubricating oil. Currently, circulating lubricating oil mainly adopts the method of point injection. Specifically, reference can be made to the patent with the publication number CN103233983A; or it is injected through a three-way valve at multiple points, and the lubricating oil is injected into the bearing from one side end of the bearing to lubricate the bearing. However, when the bearing rolling elements and the cage rotate at high speed, the centrifugal force generated is very difficult to evenly maintain the lubricating oil at the friction parts that need to be lubricated. In particular, it is more difficult for the lubricating oil on the end face opposite to the oil inlet to be simultaneously distributed to the parts that need to be lubricated.

[0003] Currently, the lubrication effect is mainly improved by improving the injection method: the lubricating oil injected into the bearing is sprayed at a speed not lower than 15 m / s. Although this can improve the lubrication effect, it cannot change the structural problems. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an oil lubrication device for a high-speed rotating bearing in a bearing housing, which has good lubrication effect, simple structure, and low cost.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: an oil lubrication device for a high-speed rotating bearing in a bearing housing, including a bearing housing, a guide oil ring seat is installed at each of the two open ends of the bearing housing, a bearing housing cover plate is installed outside the guide oil ring seat, and it is characterized in that: a baffle oil-dispersing plate for fixing with a rotating shaft is installed inside the guide oil ring seat, the baffle oil-dispersing plate is arranged with a gap from the guide oil ring seat, the baffle oil-dispersing plate rotates relative to the guide oil ring seat, the two baffle oil-dispersing plates are symmetrically arranged with the bearing installed in the bearing housing as the symmetry center, and an oil cavity is respectively formed between the guide oil ring seats, the baffle oil-dispersing plates on both sides and the end face of the bearing housing; a three-way valve is installed on the bearing housing, the three-way valve has two oil guide nozzles, and the two oil guide nozzles are respectively communicated with the two oil cavities.

[0006] Furthermore, a circular groove is formed inside the guide oil ring seat, one end face of the baffle oil-dispersing plate is located in the circular groove and arranged with a gap from the guide oil ring seat, and the other end face abuts against the inner ring of the bearing; and the side wall of the baffle oil-dispersing plate extends from the end face diameter close to the inner ring of the bearing to the other end face in a gradually decreasing manner to form an arc-shaped side wall.

[0007] Further setting: The middle of the three-way valve includes a valve body. There are two oil guiding nozzles on the valve body. There is a flow dividing plate in the valve body that divides the valve body into two cavities. The flow dividing plate is located at the center of the inlet of the three-way valve.

[0008] Further setting: A guiding inclined surface is formed on the side wall of the end face of the baffle oil scattering plate close to the circular groove, and the guiding inclined surface is butted against the arc-shaped side wall.

[0009] Further setting: The oil guiding ring seat has an inlet and an outlet. The oil guiding nozzle is inserted into the inlet, and the outer wall of the oil guiding ring seat abuts against the outer ring of the bearing.

[0010] Further setting: The bottom of the bearing seat has an oil drain port.

[0011] In summary, the present invention has the following beneficial effects: It changes the oil injection structure of the bearing, adopts oil injection on both end faces of the bearing, and after injecting into the three-way valve, the lubricating oil injection amounts on both sides are uniform; The circulating lubricating oil injected into the closed oil cavity formed on both end faces of the bearing is cut or scattered under the centrifugal force generated by the high-speed rotation of the rolling elements and the cage inside the bearing, generating a large amount of oil mist that collides violently with the rolling elements, so that the lubricating oil is evenly scattered on the friction surface where the bearing rotates. In this way, the distribution of the lubricating oil in the bearing is uniform under the same flow rate, and the temperature of the bearing after lubrication is also more uniform, improving the lubrication and cooling effects of the lubricating oil on the bearing, making the temperature rise of the high-speed rotating bearing less than 20 degrees, thereby improving the working performance of the bearing; The oil cavity is a component for guiding oil, scattering oil, and discharging oil. Also, under the action of the centrifugal force of the high-speed rotation of the bearing, the lubricating oil in the bearing is continuously scattered from the combined closed oil cavity of the baffle oil scattering plate and the oil guiding ring seat from top to bottom to the outlet of the oil guiding ring seat, and finally outputs from the oil drain port of the bearing seat and returns from the inlet of the three-way valve to form a cycle. And between the two end faces of the bearing seat and the rotating shaft, no wear parts and rotary shaft lip seals are provided, reducing the maintenance work of this set of lubrication devices, reducing the production operation cost. Furthermore, it helps to improve the reliability and service life of the overall transmission device. Description of the Drawings

[0012] Figure 1 is the assembly sectional view of the embodiment;

[0013] Figure 2 is the sectional view of the baffle oil scattering plate;

[0014] Figure 3 is the schematic diagram of the three-way valve;

[0015] Figure 4 is the end face sectional view of the oil guiding ring seat;

[0016] Figure 5 is Figure 4 the A-A sectional view of

[0017] Figure 6 It is a longitudinal sectional view of the oil guiding ring seat.

[0018] Reference numerals: 1, bearing seat; 11, oil drain port; 2, oil guiding ring seat; 21, inlet; 22, outlet; 23, circular groove; 31, outer bearing ring; 32, inner bearing ring; 4, bearing seat cover plate; 5, baffle oil-dispersing plate; 51, arc-shaped side wall; 52, guiding inclined surface; 6, oil cavity; 7, three-way valve; 71, valve body; 72, oil guiding nozzle; 73, flow dividing plate; 74, inlet. Specific embodiments

[0019] This specific embodiment is only an explanation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0020] An oil lubrication device for a high-speed rotating bearing in a bearing seat, comprising a bearing seat 1. At each of the two open ends of the bearing seat 1, an oil guiding ring seat 2 is installed. The oil guiding ring seat 2 has an inlet 21 and an outlet 22. There is 1 inlet 21 located at the top, and there are three outlets 22 located at the bottom. The outlet 22 is of an oval structure. The outer wall of the oil guiding ring seat 2 abuts against the outer bearing ring 31. A bearing seat cover plate is installed outside the oil guiding ring seat 2, and the bearing seat cover plate is fixed to the bearing seat 1. Inside the oil guiding ring seat 2, a baffle oil-dispersing plate 5 for fixing to the rotating shaft is installed. The baffle oil-dispersing plate 5 is arranged at a gap with the oil guiding ring seat 2. The baffle oil-dispersing plate 5 rotates relative to the oil guiding ring seat 2. The two baffle oil-dispersing plates 5 are symmetrically arranged with the bearing installed in the bearing seat 1 as the symmetry center. And an oil cavity 6 is respectively formed between the oil guiding ring seats 2 and the baffle oil-dispersing plates 5 on both sides and the end face of the bearing seat 1. A three-way valve 7 is installed on the bearing seat 1. The middle of the three-way valve 7 includes a valve body 71. There are two oil guiding nozzles 72 on the valve body 71. A flow dividing plate 73 is arranged inside the valve body 71 to divide the valve body 71 into two cavities. The flow dividing plate 73 is located at the center of the inlet 74 of the three-way valve 7. The oil guiding nozzles 72 are inserted into the inlets 21 and are respectively communicated with the two oil cavities 6.

[0021] The inner side of the oil guiding ring seat 2 has a circular groove 23. One end face of the baffle oil-dispersing plate 5 is located in the circular groove 23 and is arranged at a gap with the oil guiding ring seat 2, and the other end face abuts against the inner bearing ring 32. And the side wall of the baffle oil-dispersing plate 5 extends from the end face diameter close to the inner bearing ring 32 to the other end face gradually decreasing to form an arc-shaped side wall 51. A guiding inclined surface 52 is formed on the side wall of the end face of the baffle oil-dispersing plate 5 close to the circular groove 23, and the guiding inclined surface 52 is butted against the arc-shaped side wall 51.

[0022] The bottom of the bearing seat 1 has an oil drain port 11.

[0023] Lubricating oil is injected into both end faces of the bearing. After passing through the three-way valve 7, the amount of lubricating oil injected into both sides is uniform. The circulating lubricating oil injected into the closed oil cavity 6 formed by both end faces of the bearing is cut or splashed under the centrifugal force generated by the high-speed rotation of the rolling elements and the cage inside the bearing, generating a large amount of oil mist that collides violently with the rolling elements, causing the lubricating oil to be evenly splashed on the friction surface where the bearing rotates. In this way, the distribution of the lubricating oil inside the bearing is uniform under the same flow rate, and the temperature of the bearing after lubrication is also more uniform, improving the lubrication and cooling effects of the lubricating oil on the bearing. The oil cavity 6 is a component for introducing, splashing, and discharging oil. Under the action of the centrifugal force generated by the high-speed rotation of the bearing, the lubricating oil inside the bearing is continuously splashed from the combined closed oil cavity 6 of the baffle oil-dispersing plate 5 and the oil guide ring seat 2 from top to bottom to the discharge port 22 of the oil guide ring seat 2, and finally output from the bearing housing 1 through the oil discharge port 11 and reflux through the inlet 74 of the three-way valve 7 to form a cycle.

Claims

1. An oil lubrication device for a high-speed rotating bearing inside a bearing housing, comprising a bearing housing, with an oil guide ring seat installed at each of the two open ends of the bearing housing, and a bearing housing cover plate installed outside the oil guide ring seat, characterized in that: A baffle oil-dispersing plate for fixing with a rotating shaft is installed inside the oil guiding ring seat. The baffle oil-dispersing plate is arranged with a gap from the oil guiding ring seat and rotates relative to the oil guiding ring seat. The two baffle oil-dispersing plates are symmetrically arranged with the bearing installed in the bearing seat as the symmetry center, and an oil cavity is respectively formed between the oil guiding ring seats, the baffle oil-dispersing plates on both sides and the end face of the bearing seat. A three-way valve is installed on the bearing seat. The three-way valve has two oil guiding nozzles, and the two oil guiding nozzles are respectively communicated with the two oil cavities. The middle of the three-way valve includes a valve body. The valve body has two oil guiding nozzles, and a flow dividing plate is arranged inside the valve body to divide the valve body into two cavities. The flow dividing plate is located at the center of the inlet of the three-way valve.

2. The oil lubrication device for a high-speed rotating bearing inside a bearing housing according to claim 1, characterized in that: A circular groove is formed inside the oil guiding ring seat. One end face of the baffle oil-dispersing plate is located in the circular groove and arranged with a gap from the oil guiding ring seat, and the other end face abuts against the inner ring of the bearing. The side wall of the baffle oil-dispersing plate extends from the end face diameter near the inner ring of the bearing to the other end face gradually decreasing to form an arc-shaped side wall.

3. The oil lubrication device for a high-speed rotating bearing inside a bearing housing according to claim 2, characterized in that: A guiding inclined surface is formed on the side wall of the end face of the baffle oil-dispersing plate close to the circular groove, and the guiding inclined surface is butted against the arc-shaped side wall.

4. The oil lubrication device for a high-speed rotating bearing inside a bearing housing according to claim 1, characterized in that: The oil guiding ring seat has an oil inlet and an oil outlet. The oil guiding nozzle is inserted into the oil inlet, and the outer wall of the oil guiding ring seat abuts against the outer ring of the bearing.

5. The oil lubrication device for a high-speed rotating bearing inside a bearing housing according to claim 1, characterized in that: The bottom of the bearing seat has an oil drain port.

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