CN117748803A - Bearing chamber structure of main generator of locomotive - Google Patents
Bearing chamber structure of main generator of locomotive Download PDFInfo
- Publication number
- CN117748803A CN117748803A CN202311794144.4A CN202311794144A CN117748803A CN 117748803 A CN117748803 A CN 117748803A CN 202311794144 A CN202311794144 A CN 202311794144A CN 117748803 A CN117748803 A CN 117748803A
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- China
- Prior art keywords
- bearing
- main generator
- oil
- cover
- collecting box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000002699 waste material Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract 4
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 239000004519 grease Substances 0.000 description 19
- 230000001050 lubricating effect Effects 0.000 description 14
- 238000005461 lubrication Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000203 accumulation affect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a locomotive main generator bearing chamber structure, which comprises a bearing, wherein the bearing is arranged on a rotating shaft, the bearing is positioned in a bearing seat, an inner sealing ring and an outer sealing ring are arranged on the rotating shaft and positioned on two sides of the bearing, an inner bearing cover in sealing fit with the inner sealing ring is arranged on the inner side of the bearing seat, and an outer bearing cover in sealing fit with the outer sealing ring is arranged on the outer side of the bearing seat; the bottom of the outer bearing cover is provided with a waste oil collecting box, and the waste oil collecting box is communicated with the oil storage chamber through an oil drain hole. The invention redesigns the lubricating oil path, and optimizes the sealing structure of the bearing chamber.
Description
Technical Field
The invention belongs to the technical field of synchronous main generators, relates to a bearing chamber structure, and particularly relates to a bearing chamber structure of a main generator of a locomotive.
Background
The existing high-speed and high-power diesel generator sets are more matched single-bearing main generators, the main generators are required to have higher reliability and wide weather resistance and can reliably operate in various environments such as damp heat, salt fog, dust and the like, so that a reliable and stable main generator bearing chamber structure becomes a key technology of a locomotive main generator.
The structure of the bearing chamber of the prior synchronous main generator is shown in fig. 1: the bearing 5 is arranged on the rotating shaft 8 and is positioned in the bearing seat 1, the inner ring of the bearing 5 is fixedly connected with the outer sealing ring 7 by the inner sealing ring 4, the outer ring of the bearing 5 is fixedly connected with the outer bearing cover 3 by the inner bearing cover 2, and the lubricating grease can be supplemented for the bearing 5 through the oil filling nozzle 6.
The disadvantages of this prior art are as follows:
1) The existing bearing chamber structure oil way is unreasonable in design, the newly-supplemented lubricating grease is difficult to effectively participate in lubrication, and the utilization rate is low;
2) The existing bearing has insufficient sealing performance, cannot meet the diversified requirements of locomotive application environments, and is easy to cause grease to be wetted or polluted in humid, salt fog, dust and other environments;
3) The existing structure has no waste oil discharge design and waste oil collection box, and waste oil accumulation affects heat dissipation and does not meet the environmental protection requirement;
4) In the existing motor bearing chamber structure, grease is in large-area contact with the seal ring, friction heating is carried out during high-speed operation, and the service life of the grease is easy to shorten.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide a locomotive main generator bearing housing structure.
The invention is realized by adopting the following technical scheme:
the bearing is arranged on a rotating shaft, the bearing is positioned in a bearing seat, an inner sealing ring and an outer sealing ring are arranged on two sides of the bearing on the rotating shaft, an inner bearing cover in sealing fit with the inner sealing ring is arranged on the inner side of the bearing seat, and an outer bearing cover in sealing fit with the outer sealing ring is arranged on the outer side of the bearing seat; the bottom of the outer bearing cover is provided with a waste oil collecting box, and the waste oil collecting box is communicated with the oil storage chamber through an oil drain hole.
During application, lubricating grease enters the oil groove through the oil filling hole, then enters the ball part to participate in lubrication, and after the lubrication is completed, the lubricating grease enters the waste oil collecting box through the oil draining hole to be collected in a concentrated mode.
In order to shorten the lubricating path of the lubricating grease, the oil groove is arranged on one side close to the bearing and the bearing seat.
Further preferably, in order to sufficiently lubricate the bearing, an oil filling hole is formed in the upper portion of the bearing seat, an oil groove connected with the oil filling hole is formed in the inner side of the inner bearing cover, and a through hole corresponding to the oil filling hole is formed in the outer bearing cover. The lubricating grease passes through the pumping action after the bearing rotates from the inner bearing cover to the outer bearing cover, and finally enters the waste oil collecting box.
Further preferably, the inner bearing cover and the inner sealing ring labyrinth grooves are E-shaped, and the outer bearing cover and the outer sealing ring are provided with two labyrinth grooves. The sealing performance is greatly improved under the condition of the same processing precision without increasing the weight and the volume of the parts.
Further preferably, the inner bearing is covered with a C-shaped oil storage chamber and is connected with the oil groove, and the outer bearing is covered with a C-shaped oil storage chamber; the C-shaped oil storage chamber is arranged on the side close to the bearing. The lubricating grease is stored in the inner bearing cover and the outer bearing cover, so that the contact area with the inner sealing ring and the outer sealing ring is greatly reduced.
Further preferably, the outer bearing cover and the waste oil collecting box are integrally designed, and the oil drain hole is obliquely formed between the C-shaped oil storage chamber and the waste oil collecting box. The waste oil collecting box is arranged on one side, far away from the bearing, of the outer bearing cover, and the outer side of the waste oil collecting box is sealed by a movable cover plate, so that the waste oil collecting box is convenient to open and clean regularly.
The invention has the following advantages:
1) The design of a bearing grease way is provided, a new grease supplementing, lubricating and discharging route is planned, and the lubricating efficiency is improved;
2) Optimizing the sealing performance of the bearing chamber, and developing a bearing chamber structure capable of reliably operating in humid, salt mist and dust environments;
3) Designing a waste oil discharge route and a collection box to solve the waste oil collection and treatment problem;
4) The bearing cover and the seal ring structure are improved, the contact area between the seal ring and lubricating grease is reduced, the heat generated by stirring friction is prevented, and the storage time is prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 shows a schematic view of a prior art bearing housing structure.
Figure 2 shows a schematic view of the bearing structure of the present invention.
Fig. 3 shows a schematic view of the oil passage according to the present invention.
Fig. 4 shows a schematic view of a C-type oil reservoir.
FIG. 5 shows a schematic view of a waste oil collecting box.
In the figure: 1-bearing pedestal, 101-oil filling hole, 2-inner bearing cover, 201-oil groove, 3-outer bearing cover, 4-inner sealing ring, 5-bearing, 6-oil filling nozzle, 7-outer sealing ring, 8-rotating shaft, 9-waste oil collecting box, 901-oil draining hole, 902-cover plate, 10-C type oil storage chamber, I-oil filling, II-through oil filling hole, III-entering ball part, IV-participating in lubrication, V-finishing lubrication, VI-through oil draining hole, VII-waste oil collecting.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be made. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
In the description, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms described above will be understood by those of ordinary skill in the art as the case may be.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the invention.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The utility model provides a locomotive main generator bearing room structure, includes bearing 5, and bearing 5 installs on pivot 8, and bearing 5 is located bearing frame 1, is equipped with inner seal ring 4 and outer seal ring 7 in being located bearing 5 both sides on pivot 8, and bearing frame 1 inboard is installed with inner seal ring 4 sealing fit's inner bearing lid 2, and bearing frame 1 outside is installed with outer seal ring 7 sealing fit's outer bearing lid 3.
The bottom of the outer bearing cover 3 is formed with a waste oil collecting box 9, and the waste oil collecting box 9 is communicated with the oil storage chamber through an oil drain hole 901.
The upper part of the bearing seat 1 is provided with an oil filling hole 101, and the inner side of the inner bearing cover 2 is provided with an oil groove 201 connected with the oil filling hole 101.
As shown in fig. 3, the brand new oil path is: oiling I is to add grease, through the oil filler hole II, enter the oil groove of the inner bearing cover, enter the ball part III, directly participate in lubricating IV bearing, after finishing lubricating V, the specific gravity of the grease is increased, the viscosity is reduced, the grease gradually moves to the bottom of the outer bearing cover under the action of gravity, pressure difference and the like, enters the waste oil collecting box through the oil drain hole VI, and finishing the concentrated collection of the waste oil VII.
Under the condition of not increasing the weight and the volume of the parts, the labyrinth grooves of the inner bearing cover 2 and the inner sealing ring 4 are designed to be E-shaped, two labyrinth grooves are additionally arranged between the outer bearing cover 3 and the outer sealing ring 7, and the sealing performance is greatly improved under the condition of the same processing precision.
As shown in fig. 4, the inner and outer bearing caps 2 and 3 are provided with C-shaped oil storage chambers 10, so that grease is stored in the inner and outer bearing caps 2 and 3, and the contact area with the inner and outer seal rings 4 and 7 is greatly reduced.
As shown in fig. 5, the outer bearing cover 3 and the waste oil collecting box 9 are integrally designed, and an oblique oil drain hole 901 is processed between the outer bearing cover 3C-type oil storage chamber 10 and the waste oil collecting box 9, so that waste grease enters the waste oil collecting box 9 under the action of centrifugal force and gravity, and the outer side of the waste oil collecting box 9 is sealed by a movable cover plate 902, so that the waste oil collecting box is convenient to open and clean periodically.
The invention has the following advantages:
1) The sealing performance of the bearing chamber of the bearing structure is enhanced, so that the main generator can be reliably used in humid, salt fog and dust environments;
2) After the oil way of the main generator is improved, newly added lubricating grease firstly enters the bearing to participate in lubrication, and then is discharged from the bearing to improve the lubrication efficiency and take away waste oil and impurities generated after lubrication;
3) The bearing lubrication condition is improved, so that the service life of the bearing can be prolonged;
4) The waste oil collecting function reduces pollution and meets the requirements of green environmental protection and the like.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Although described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and they should be construed as covering the scope of the appended claims.
Claims (8)
1. The utility model provides a locomotive main generator bearing room structure, includes bearing (5), bearing (5) are installed on pivot (8), bearing (5) are located bearing frame (1), be equipped with inner seal ring (4) and outer seal ring (7) on pivot (8) are located bearing (5) both sides, bearing frame (1) inboard install with inner seal ring (4) sealing fit's inner bearing cap (2), bearing frame (1) outside install with outer seal ring (7) sealing fit's outer bearing cap (3);
the method is characterized in that: the bottom of the outer bearing cover (3) is provided with a waste oil collecting box (9), and the waste oil collecting box (9) is communicated with the oil storage chamber through an oil drain hole (901).
2. A locomotive main generator bearing housing structure as claimed in claim 1, wherein: the upper part of the bearing seat (1) is provided with an oil filling hole (101), and the inner side of the inner bearing cover (2) is provided with an oil groove (201) connected with the oil filling hole (101).
3. A locomotive main generator bearing housing structure as claimed in claim 2, wherein: the outer bearing cover (3) is provided with a through hole corresponding to the oil filling hole (101).
4. A locomotive main generator bearing housing structure as claimed in claim 1, wherein: the waste oil collecting box (9) is sealed by a cover plate (902).
5. A locomotive main generator bearing housing structure as claimed in claim 1, wherein: e-shaped labyrinth sealing is adopted between the inner sealing ring (4) and the inner bearing cover (2).
6. A locomotive main generator bearing housing structure as claimed in claim 1, wherein: two labyrinth grooves are adopted for sealing between the outer sealing ring (7) and the outer bearing cover (3).
7. A locomotive main generator bearing housing structure as claimed in claim 6, wherein: the inner bearing cover (2) is provided with a C-shaped oil storage chamber (10).
8. A locomotive main generator bearing housing structure as claimed in claim 7, wherein: the outer bearing cover (3) is provided with a C-shaped oil storage chamber (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311794144.4A CN117748803A (en) | 2023-12-25 | 2023-12-25 | Bearing chamber structure of main generator of locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311794144.4A CN117748803A (en) | 2023-12-25 | 2023-12-25 | Bearing chamber structure of main generator of locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117748803A true CN117748803A (en) | 2024-03-22 |
Family
ID=90281199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311794144.4A Pending CN117748803A (en) | 2023-12-25 | 2023-12-25 | Bearing chamber structure of main generator of locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117748803A (en) |
-
2023
- 2023-12-25 CN CN202311794144.4A patent/CN117748803A/en active Pending
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