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CN-122014982-A - Bearing lubricating device and engine

CN122014982ACN 122014982 ACN122014982 ACN 122014982ACN-122014982-A

Abstract

The invention discloses a bearing lubricating device and an engine, and relates to the technical field of aeroengines, wherein the bearing lubricating device comprises a bearing seat, a nozzle, a bearing and an oil collecting ring, wherein the bearing seat is provided with an oil path channel which extends partially along the direction of a central line, the nozzle is connected to an oil path outlet, an oil injection port of the nozzle extends towards the direction far away from the bearing seat, the extending direction of the oil injection port forms an angle with the central line of the bearing seat, a rotating shaft is coaxially arranged with the central line of the bearing seat, a space is arranged between the end part of the rotating shaft and the bearing seat, the bearing and the oil collecting ring are sequentially connected to the rotating shaft, the oil collecting ring is positioned at the outer side of the bearing, the outer side of the oil collecting ring is provided with an oil collecting port, the oil collecting port is opposite to the oil injection port of the nozzle, one end of the oil collecting port is communicated with the oil collecting port, and the other end of the oil collecting port is communicated with the bearing. According to the bearing lubricating device, when the nozzle is installed, the oil injection port can face the oil collecting ring only by adjusting the axial position of the nozzle, so that the installation requirement of the nozzle is reduced, and the installation efficiency is improved.

Inventors

  • WEI HAN
  • ZENG FEI
  • DUAN RUYI
  • YE FEI
  • WANG KAI
  • TANG XIANGLIN

Assignees

  • 中国航发湖南动力机械研究所

Dates

Publication Date
20260512
Application Date
20260317

Claims (10)

  1. 1. A bearing lubrication device, comprising: A bearing seat (1) having an oil passage (101), the oil passage (101) having a portion extending in a direction of a center line of the bearing seat (1), the oil passage (101) having an oil passage outlet extending out of the bearing seat (1); The nozzle (2) is connected to the oil path outlet, the nozzle (2) is provided with an oil injection port (201), the oil injection port (201) extends towards a direction away from the bearing seat (1), and the extending direction of the oil injection port (201) forms an angle with the central line of the bearing seat (1); a rotating shaft (3) is coaxially arranged with the central line of the bearing seat (1), and a space is reserved between the end part of the rotating shaft (3) and the bearing seat (1); Bearing (4) and oil collecting ring (5) connect gradually on axis of rotation (3), oil collecting ring (5) are located the bearing (4) outside, the outside of oil collecting ring (5) has oil collecting port (501), oil collecting port (501) with oil spout (201) of nozzle (2) are relative, oil collecting channel (502) have in oil collecting ring (5), oil collecting channel (502) one end with oil collecting port (501) intercommunication, the other end with bearing (4) intercommunication.
  2. 2. Bearing lubrication device according to claim 1, characterized in that the direction of extension of the injection opening (201) of the nozzle (2) is 45 ° ± 5 ° from the centre line of the bearing block (1).
  3. 3. Bearing lubrication device according to claim 1, characterized in that the oil collecting port (501) is annular.
  4. 4. Bearing lubrication device according to claim 1, characterized in that the oil collecting channel (502) is provided with a plurality of oil collecting rings (5) at intervals along the circumferential direction, and the linear distance between the oil collecting channel (502) and the center of the rotating shaft (3) gradually increases from the oil collecting port (501) to the bearing (4).
  5. 5. Bearing lubrication device according to claim 1, characterized in that the nozzle (2) has a mounting portion (202) and an operating portion (203), the operating portion (203) being connected to the root portion of the mounting portion (202), the mounting portion (202) being connected to the oil passage (101) of the bearing housing (1) by a screw structure.
  6. 6. Bearing lubrication device according to claim 5, characterized in that an adjustment pad (6) is provided between the operating part (203) and the bearing housing (1).
  7. 7. Bearing lubrication device according to claim 5, characterized in that a wire thread insert (102) is arranged in the oil channel outlet of the bearing block (1).
  8. 8. Bearing lubrication device according to any one of claims 1-7, characterized in that the oil collecting ring (5) is connected to the end of the rotating shaft (3) by a screw structure, the end of the rotating shaft (3) having a recess (301) for mounting the oil collecting ring (5).
  9. 9. Bearing lubrication device according to any of claims 1-7, characterized in that the bearing (4) has an inner ring (401), an outer ring (402) and rolling bodies (403), the rolling bodies (403) being arranged between the inner ring (401) and the outer ring (402), the inner ring (401) being connected to the rotating shaft (3), the inner ring (401) of the bearing (4) having grooves (404), which grooves (404) have one end communicating with the oil collecting channel (502) of the oil collecting ring (5) and the other end extending away from the oil collecting ring (5), the inner ring (401) further having openings (405), which openings (405) have one end communicating with the grooves (404) and the other end opening into the rolling bodies (403).
  10. 10. An engine comprising a bearing lubrication device according to any one of claims 1 to 9.

Description

Bearing lubricating device and engine Technical Field The invention relates to the technical field of aeroengines, in particular to a bearing lubricating device and an engine. Background Currently, aeroengines use rolling bearings without exception rather than sliding bearings. Although there are some disadvantages to rolling bearings, they have advantages such as a small friction coefficient, reliable operation at high rotational speeds, and a short axial length, compared to sliding bearings. However, roller bearings generate a lot of heat during operation, so that effective cooling measures must be taken, otherwise the bearings fail rapidly once the temperature of the bearings increases. At present, most of aeroengines adopt jet lubrication or oil supply lubrication under a ring to cool a bearing, the jet lubrication needs to directly jet lubricating oil to a gap between a rolling body and a retainer, the oil supply lubrication under the ring needs to jet lubricating oil to an inner ring of the bearing or convey the lubricating oil to an oil supply ring and then enter the inner ring of the bearing, and the two lubrication modes have higher precision requirements on the position, the angle and the flow of a nozzle. The Chinese patent document CN110714987A discloses an oil supply lubrication device under a radial oil collecting ring, and aims to solve the problems that lubricating oil is difficult to enter the inside of a bearing under the conditions of high speed, high temperature and heavy load and the lubrication and cooling effects are poor. Specifically, the conventional lubrication is that the nozzle sprays oil directly against the bearing rotating at high speed, and oil drops are easily blown away by air flow. The invention idea of the patent document is to specially design a radial oil collecting ring which rotates synchronously with a main shaft, the sprayed oil is firstly received by the radial oil collecting ring, and then the oil is pumped into a set of preset pipelines by using the rotating centrifugal force as power, and finally the oil is accurately fed into a bearing. The radial oil collecting ring is a rotary cylinder sleeved on a shaft, and a circle of oil collecting blades are arranged on the outer side of the radial oil collecting ring and used for 'grabbing' sprayed lubricating oil. By adopting the scheme, the nozzle is required to spray oil from the outer side towards the rotating cylinder along the tangential direction of the main shaft, in the rotating process of the main shaft, the oil spraying opening of the nozzle can not face the oil collecting inlet of the rotating cylinder at any time, the accumulated lubricating oil exists in the oil collecting inlet, and the accumulated lubricating oil is required to be pumped into the bearing by taking the rotation of the oil collecting blade as power. However, these accumulated lubricating oils are prone to oil leakage problems. Chinese patent document CN115614649a discloses a bearing lubrication structure, on which a lock nut and a bearing inner ring are sequentially installed. During operation, the nozzle sprays lubricating oil obliquely from the outer side into the rotating lock nut, a specially designed annular groove (a first groove body) is formed in the inner wall of the lock nut, and the lubricating oil directly enters the first groove body to be collected. The lock nut is connected to several axial channels (first delivery channels) along which the collected oil is "thrown" into the bearing under the influence of centrifugal force. However, in the above-described configuration, since the nozzle has a bend, the direction of the nozzle is required to be high when the nozzle is mounted. Disclosure of Invention In view of the above, the invention provides a bearing lubrication device and an engine, so as to solve the problem of high installation requirement of a nozzle of the central bearing lubrication device in the prior art. The invention provides a bearing lubrication device, comprising: The bearing seat is provided with an oil path channel, the oil path channel is provided with an oil path outlet, the part of the oil path channel extends along the direction of the central line of the bearing seat, and the oil path channel is provided with an oil path outlet extending out of the bearing seat; The nozzle is connected to the oil way outlet and is provided with an oil injection port, the oil injection port extends towards the direction away from the bearing seat, and the extending direction of the oil injection port forms an angle with the central line of the bearing seat; The rotating shaft is coaxially arranged with the central line of the bearing seat, and a space is reserved between the end part of the rotating shaft and the bearing seat; The bearing and the oil collecting ring are sequentially connected to the rotating shaft, the oil collecting ring is located on the outer side of the bearing, an oil collecting port is formed in