CN113446322A - End shield box cover device of oil film bearing - Google Patents
End shield box cover device of oil film bearing Download PDFInfo
- Publication number
- CN113446322A CN113446322A CN202110841665.5A CN202110841665A CN113446322A CN 113446322 A CN113446322 A CN 113446322A CN 202110841665 A CN202110841665 A CN 202110841665A CN 113446322 A CN113446322 A CN 113446322A
- Authority
- CN
- China
- Prior art keywords
- end cover
- oil film
- cover
- film bearing
- box cover
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an end cover box cover device of an oil film bearing, which comprises an end cover, a box cover, an eyelet bolt and a rotating shaft, wherein the box cover is fixed on the end surface of a bearing box of the oil film bearing through bolts, one side of the end cover is connected to the box cover through the rotating shaft, the other side of the end cover is connected to the box cover through the eyelet bolt, a hollow rubber ring is arranged between the end cover and the box cover, the end cover box cover device of the oil film bearing also comprises a cone head positioning pin, the cone head positioning pin comprises a conical guiding part, a cylindrical positioning part and a thread mounting part, the diameter of the large end of the conical guiding part is equal to that of the cylindrical positioning part, the thread mounting part is arranged at the lower part of the box cover and is positioned below the end cover, and the outer circular surface of the cylindrical positioning part is tangent to the outer circular surface of the end cover. The device can ensure that the hollow rubber ring between the end cover and the box cover is uniformly pressed when the end cover is closed, thereby solving the problem of water inflow or oil leakage of the oil film bearing and improving the sealing effect and the safety and reliability of the oil film bearing.
Description
Technical Field
The invention belongs to the technical field of oil film bearings, and particularly relates to an end shield box cover device of an oil film bearing.
Background
The oil film bearing is a key part of a rolling mill and comprises a radial bearing device, an axial bearing device, a locking device, a sealing device and the like. The rolling mill oil film bearing is in a very severe environment when in work, and is washed by a large amount of cooling liquid, iron scale and other foreign matters in the rolling process, so that the danger that the iron scale and the cooling liquid enter the bearing at any time exists. Once the iron scale and the cooling liquid enter the oil film bearing, the oil film bearing is easily damaged, and a large amount of lubricating oil is leaked to pollute the environment; if so, water and other foreign matters are mixed into the rolling mill, so that the lubricating oil is deteriorated, the bearing is damaged, the rolling mill cannot normally run, and huge economic loss is caused.
Therefore, an end shield cap device is usually provided on the oil film bearing. In the conventional oil film bearing end cover box cover device, as shown in fig. 1(a) and 1(b), a box cover 3 is fixed on an end face of a bearing box 4 of an oil film bearing through bolts 5 for fixing a bearing box assembly of the oil film bearing or directly fixing a thrust bearing, one side of an end cover 1 is connected to the box cover 3 through a rotating shaft 7 for sealing the oil film bearing, the other side of the end cover 1 is connected to the box cover 3 through a swing bolt 6, and a hollow rubber ring 2 is arranged between an inner circumferential surface of the end cover 1 and an outer conical surface of the box cover 3 for sealing. When the roller is dismounted, the end cover 1 can be opened relative to the box cover 3 around the rotating shaft 7 only by opening the swing bolt 6.
However, in the existing oil film bearing end cover box cover device, as the end cover 1 is repeatedly opened and closed, the rotating shaft 7 may rub against the shaft hole where the rotating shaft 7 is located, causing abrasion of the rotating shaft 7, increasing the fit clearance between the rotating shaft 7 and the shaft hole, causing the rotating shaft 7 to incline and shake in the shaft hole where the rotating shaft is located, causing the end cover 1 to sink due to its own weight, further causing the situation that the end cover 1 and the box cover 3 are not assembled in place when the end cover 1 is closed, and causing uneven pressure on the hollow rubber ring 2 between the end cover 1 and the box cover 3 as shown in fig. 1(c), thereby causing the problem of water inlet or oil leakage of the oil film bearing.
Therefore, there is a need for an improvement to an end shield case cover device of an existing oil film bearing, so as to ensure that the end shield and the case cover are assembled in place and a hollow rubber ring between the end shield and the case cover is uniformly pressed when the end shield is closed under the condition that the end shield sinks due to abrasion of a rotating shaft, thereby solving the problem of water inflow or oil leakage of the oil film bearing and improving the sealing effect and safety and reliability of the oil film bearing.
Disclosure of Invention
In order to solve some or all technical problems in the prior art, the invention provides an end cover and box cover device of an oil film bearing, which comprises an end cover, a box cover, a swing bolt and a rotating shaft, wherein the box cover is fixed on the end surface of a bearing box of the oil film bearing through the bolt, one side of the end cover is connected to the box cover through the rotating shaft, the other side of the end cover is connected to the box cover through the swing bolt, and a hollow rubber ring is arranged between the end cover and the box cover.
Preferably, in the end-shield case lid apparatus for an oil film bearing described above, the tapered guide portion has a taper angle of 5 ° to 40 °, the cylindrical positioning portion has a length equal to or greater than the thickness of a portion of the end-shield that contacts the cylindrical positioning portion, and the screw-mounting portion is screwed to the case lid lower portion by its screw structure.
Preferably, in the end-shield case lid device of the oil film bearing, the number of the conical head positioning pins is 1 or 2.
Preferably, in the end-shield case lid device of the oil film bearing, the number of the conical head positioning pins is 3 or 4, and each conical head positioning pin is arranged at equal intervals.
The main advantages of the technical scheme of the invention include: by using the end cover box cover device of the oil film bearing, even if the end cover sinks due to self weight under the condition that the rotating shaft is abraded, the end cover slides along the conical surface of the conical guide part and continuously lifts the position until the end cover is loaded and positioned on the cylindrical positioning part in the closing process of the end cover, so that the end cover and the box cover are accurately assembled, a hollow rubber ring between the end cover and the box cover is uniformly pressed, the problem of water inlet or oil leakage of the oil film bearing is effectively solved, the sealing effect and the safety and the reliability of the oil film bearing are improved, the maintenance cost of the oil film bearing is reduced, and the working efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:
fig. 1(a) is a schematic structural diagram of an oil film bearing end shield cover device in the prior art.
FIG. 1(b) is a sectional view taken along A-A in FIG. 1 (a).
FIG. 1(c) is a sectional view taken along B-B in FIG. 1(a), showing a state in which the hollow rubber ring is unevenly compressed.
Fig. 2(a) is a schematic structural view of an end shield case cover device of an oil film bearing of the present invention.
Fig. 2(b) is a sectional view taken along C-C in fig. 2 (a).
Fig. 3 is a schematic structural diagram of a conical head positioning pin in an end shield box cover device of the oil film bearing of the invention.
Fig. 4(a), 4(b) and 4(c) are schematic diagrams illustrating different arrangement examples of the cone positioning pin in the end cover box cover device of the oil film bearing of the invention.
Description of reference numerals:
1-end shield, 2-hollow rubber ring, 3-box cover, 4-bearing box, 5-bolt, 6-swing bolt, 7-rotating shaft, 11-end shield, 12-hollow rubber ring, 13-box cover, 14-bearing box, 15-bolt, 16-swing bolt, 17-rotating shaft, 18-conical head positioning pin, 18.1-conical guide part, 18.2-cylindrical positioning part and 18.3-thread mounting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2(a), 2(b) and 3, an embodiment of the present invention provides an end shield case lid apparatus for an oil film bearing, including: the end cover 11, the box cover 13, the swing bolt 16, the rotating shaft 17, the conical head locating pin 18, the box cover 13 is fixed on the end face of the bearing box 14 of the oil film bearing through the bolt 15, the bearing box assembly for fixing the oil film bearing or directly fixing the thrust bearing, one side of the end cover 11 is connected to the box cover 13 through the rotating shaft 17 for closing the oil film bearing, the other side of the end cover 11 is connected to the box cover 13 through the swing bolt 16, a hollow rubber ring 12 is arranged between the inner circumferential surface of the end cover 11 and the outer conical surface of the box cover 13 for sealing, the conical head locating pin 18 is composed of a conical guiding portion 18.1, a cylindrical locating portion 18.2 and a thread mounting portion 18.3, the large end diameter of the conical guiding portion 18.1 is equal to the diameter of the cylindrical locating portion 18.2, the thread mounting portion 18.3 is mounted at the lower portion of the box cover 13 and located below the end cover 11, and the outer circular surface of the cylindrical locating portion 18.2 is tangent to the outer circular cylindrical locating surface of the end cover 11.
By utilizing the end cover box cover device of the oil film bearing, even if the end cover 11 sinks due to self weight under the condition that the rotating shaft 17 is abraded, in the closing process of the end cover 11, the outer circular surface of the end cover 11 is firstly contacted with the conical guide part 18.1 of the conical head positioning pin 18, under the guiding action of the conical guide part 18.1, the end cover 11 slides along the conical surface of the conical guide part 18.1 and continuously lifts the position of the end cover upwards until the end cover is loaded and positioned on the cylindrical positioning part 18.2, so that the end cover 11 and the box cover 13 are accurately assembled, the hollow rubber ring 12 between the end cover 11 and the box cover 13 is uniformly pressed, the problem of water inlet or oil leakage of the oil film bearing is effectively solved, and the sealing effect and the safety reliability of the oil film bearing are improved.
As a specific embodiment, the taper angle β of the tapered guide portion 18.1 is 5 ° to 40 ° in order to guide the end cover 12 more smoothly; the length of the cylindrical positioning part 18.2 is set to be equal to or greater than the thickness of the part of the end cover 11 contacting the cylindrical positioning part 18.2, so that the end cover 11 is completely positioned on the cylindrical positioning part 18.2 in a bearing manner; the threaded mounting portion 18.3 is screwed to the lower portion of the case cover 13 through a threaded structure of the threaded mounting portion, and the threaded structure facilitates mounting and adjustment of the cone-head positioning pin 18.
As a specific embodiment, the end-shield case lid device of the oil film bearing of the present invention may include 1 or more conical head positioning pins 18, for example, 1 conical head positioning pin 18 as shown in fig. 4(a), 2 conical head positioning pins as shown in fig. 2(a), 3 conical head positioning pins as shown in fig. 4(b), or 4 conical head positioning pins 18 as shown in fig. 4(c), and the outer circumferential surface of the cylindrical positioning portion 18.2 of each conical head positioning pin 18 is tangent to the outer circumferential surface of the end shield 11. The arrangement of the plurality of conical head positioning pins 18 can further improve the bearing strength and the positioning reliability of the conical head positioning pins 18 on the end cover 11. Further, in the case where 3 or 4 cone positioning pins 18 are provided, it is preferable that the respective cone positioning pins 18 are provided at equal intervals.
In summary, with the end cover and case cover device of the oil film bearing of the present invention, even if the end cover sinks due to its own weight under the condition of the abrasion of the rotating shaft, in the closing process of the end cover, the end cover slides along the tapered surface of the tapered guide portion and continuously lifts up until bearing and positioning on the cylindrical positioning portion, so that the end cover and the case cover are accurately assembled, thereby the hollow rubber ring between the end cover and the case cover is uniformly pressed, the problem of water or oil leakage of the oil film bearing is effectively solved, the sealing effect and the safety reliability of the oil film bearing are improved, the maintenance cost of the oil film bearing is reduced, and the working efficiency is improved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The utility model provides an end cover case lid device of oil film bearing, includes end cover, case lid, eye bolt, pivot, the case lid passes through the bolt fastening on the terminal surface of the bearing box of oil film bearing, one side of end cover is passed through the pivot connect in the case lid, the opposite side of end cover passes through eye bolt connect in the case lid, the end cover with be equipped with hollow rubber circle between the case lid, its characterized in that, oil film bearing's end cover case lid device still includes the conical head locating pin, the conical head locating pin includes toper guide portion, cylindrical location portion and screw thread installation department, the main aspects diameter of toper guide portion equals the diameter of cylindrical location portion, the screw thread installation department is installed the lower part of case lid is located the end cover below, and the outer disc of cylindrical location portion with the outer disc of end cover is tangent.
2. The end shield case cover device of the oil film bearing of claim 1, wherein the taper angle of the tapered guide portion is 5 ° to 40 °, the length of the cylindrical positioning portion is equal to or greater than the thickness of the portion of the end shield in contact with the cylindrical positioning portion, and the threaded mounting portion is screwed to the case cover lower portion by the threaded structure thereof.
3. The end shield case cap assembly of oil film bearing of claim 1 wherein said conical head locating pins are 1 or 2 in number.
4. The end shield case cover device of the oil film bearing of claim 1, wherein the number of said conical head positioning pins is 3 or 4, and each conical head positioning pin is arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841665.5A CN113446322B (en) | 2021-07-26 | 2021-07-26 | End shield box cover device of oil film bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841665.5A CN113446322B (en) | 2021-07-26 | 2021-07-26 | End shield box cover device of oil film bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113446322A true CN113446322A (en) | 2021-09-28 |
| CN113446322B CN113446322B (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110841665.5A Active CN113446322B (en) | 2021-07-26 | 2021-07-26 | End shield box cover device of oil film bearing |
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| CN (1) | CN113446322B (en) |
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| CN113446322B (en) | 2022-06-14 |
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