CN117189852A - Double oil film bearing device for rolling mill gearbox and installation and adjustment method thereof - Google Patents
Double oil film bearing device for rolling mill gearbox and installation and adjustment method thereof Download PDFInfo
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- CN117189852A CN117189852A CN202311125958.9A CN202311125958A CN117189852A CN 117189852 A CN117189852 A CN 117189852A CN 202311125958 A CN202311125958 A CN 202311125958A CN 117189852 A CN117189852 A CN 117189852A
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- sliding bearings
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- 238000005096 rolling process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 title abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 239000003921 oil Substances 0.000 claims description 124
- 238000009792 diffusion process Methods 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 239000010687 lubricating oil Substances 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 12
- 108700041286 delta Proteins 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention belongs to the technical field of metallurgical equipment, and relates to a double oil film bearing device for a rolling mill gearbox and an installation and adjustment method thereof, wherein the double oil film bearing device comprises two sliding bearings installed in pairs, the sliding bearings are provided with an inner sleeve and an outer sleeve sleeved on the inner sleeve, and a pressure oil film is arranged between the inner sleeve and the outer sleeve; the two sliding bearings are installed oppositely, the inner sleeves of the two sliding bearings are fixedly sleeved on the transmission shaft in the rolling mill gearbox, and the outer sleeves of the two sliding bearings are fixedly connected in the inner hole of the rotating piece in the rolling mill gearbox so as to rotationally connect the transmission shaft with the rotating piece. The invention utilizes the characteristics of the sliding bearing to avoid the fretting wear of the bearing when the rolling mill gearbox is in a locking state, thereby prolonging the whole service life of the equipment.
Description
Technical Field
The invention belongs to the technical field of metallurgical equipment, and relates to a double oil film bearing device for a rolling mill gearbox under the conditions of high speed and heavy load variation and an installation and adjustment method thereof.
Background
The service life and the running stability of the equipment of the gear box of the modular rolling mill are critical to the running condition of the modular rolling mill as an important component of the transmission system of the modular rolling mill. In the existing module rolling mill gearbox gear shifting shafting, two tapered roller bearings are often adopted to connect a rotating part and a shaft, although the rotating part can be guaranteed to be uniformly supported, when a clutch device and the rotating part are relatively fixed (in a locking state), namely, the rotating part and the shaft are in a synchronous rotation state, at the moment, the inner ring and the outer ring of a loaded side bearing are relatively static, and an unbalanced load phenomenon exists, and the bearing in the locking state is likely to work in a fretting wear state to lose efficacy due to the fact that the module rolling mill is in a high-speed heavy load working condition for a long time, so that the service life of equipment is influenced.
Therefore, a dual oil film bearing device for a rolling mill gearbox and an installation and adjustment method thereof, which can be used under the conditions of high speed and heavy load change, are urgently needed at present, so as to solve the problem that the bearing in the modular rolling mill gearbox is in fretting wear state to work so as to cause the failure of the bearing, and further influence the overall service life of equipment.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a double oil film bearing device for a rolling mill gearbox and a mounting and adjusting method thereof, which can prevent fretting wear of the bearing by utilizing the characteristics of the sliding bearing, thereby improving the overall service life of the equipment.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the double oil film bearing device for the rolling mill gearbox is characterized by comprising two sliding bearings which are installed in pairs, wherein the sliding bearings are provided with an inner sleeve and an outer sleeve sleeved on the inner sleeve, and a pressure oil film is arranged between the inner sleeve and the outer sleeve;
the two sliding bearings are installed oppositely, the inner sleeves of the two sliding bearings are fixedly sleeved on the transmission shaft in the rolling mill gearbox, and the outer sleeves of the two sliding bearings are fixedly connected in the inner hole of the rotating piece in the rolling mill gearbox so as to rotationally connect the transmission shaft with the rotating piece.
Further, the outer sleeve is fixedly connected with the rotating piece through interference connection, and the inner sleeve is fixedly connected with the transmission shaft through interference connection.
Further, an annular oil groove is formed in the inner surface of the inner sleeve, a plurality of radial oil holes which are uniformly distributed along the circumferential direction are formed in the annular oil groove, and conical flaring is formed in the position, close to the outer sleeve, of the radial oil holes, so that lubricating oil can be smoothly and uniformly injected into the joint surface of the inner sleeve and the outer sleeve.
Further, a spacer bush sleeved on the transmission shaft is arranged between the two sliding bearings, two ends of the spacer bush are respectively connected with inner sleeves in the two sliding bearings so as to axially limit the sliding bearings, and one end, far away from the spacer bush, of the inner sleeve is provided with a flange so as to axially limit the outer sleeve.
Further, a plurality of axial oil grooves are uniformly distributed along the circumferential direction on the inner surface of the outer sleeve, and oil wedges connected with the axial oil grooves are arranged on the side edges of the outer sleeve, which are contacted with the flange of the inner sleeve, so that the side surfaces of the inner sleeve and the outer sleeve are in contact with each other in the relative rotation process.
Further, the width of the axial oil groove middle section of the axial oil groove is larger than the width of the axial oil groove end sections positioned at the two ends of the axial oil groove, so that an oil path of the axial oil groove is in a state that the two ends of the oil path are contracted.
Further, the oil wedge is provided with a double-diffusion outer surface which is a first diffusion surface and a second diffusion surface connected with the first diffusion surface, wherein the first diffusion surface is connected with the axial oil groove and is a triangular surface, so that lubricating oil can be stored when the first diffusion surface supplies oil;
the second diffusion surface employs an inclined surface to enable uniform and wide flow of lubricating oil to the non-diffusion port location.
Further, the axial oil grooves and the radial oil holes are different in number and are partially staggered, so that when one radial oil hole is overlapped with the axial oil groove, the rest radial oil holes are staggered with the axial oil groove.
The method for installing and adjusting the double oil film bearing device for the rolling mill gearbox comprises the following steps:
a. pressing the outer sleeves of two sliding bearings installed in pairs into the inner holes of rotating parts in a rolling mill gearbox;
b. the length dimensions of the relative positions of the two ends of the two outer sleeves are measured, the spacer bush is matched and ground according to the measured length dimensions of the relative positions of the two ends of the two outer sleeves and then is arranged on a transmission shaft in a rolling mill gearbox, so that the inner sleeves of the two sliding bearings are axially limited through the spacer bush, and the axial clearance of the two sliding bearings is within the range of delta 1;
c. after actual inner diameter sizes of the two outer sleeves are actually measured, the outer diameter sizes of the inner sleeves of the sliding bearings corresponding to the actual inner diameter sizes of the two outer sleeves are matched and ground and then are arranged on the transmission shaft, so that the radial clearance of the two sliding bearings is ensured to be respectively in the range of delta 2 and delta 3;
the Δ1, Δ2 and Δ3 are limited to a reasonable extent that the two paired mounted plain bearings are capable of forming a pressure oil film, such that the two paired mounted plain bearings form a pressure oil film between the inner and outer sleeves at a given oil pressure, and the mounting adjustment of the dual oil film bearing arrangement is completed.
Further, let the actual inner diameter dimensions of the inner sleeves of the two sliding bearings be a and b, respectively, then Δ1 is (0.5-3 mill) (a+b)/2 mm, Δ2 is (0.5-3 mill) a mm, and Δ3 is (0.5-3 mill) b mm, so that the two paired sliding bearings form a pressure oil film between the inner sleeve and the outer sleeve at a given oil pressure.
The invention has the beneficial effects that:
1. the double oil film bearing device for the rolling mill gearbox and the installation and adjustment method thereof provided by the invention adopt two sliding bearing structures installed in pairs, so that the contact area of the bearing and a rotating part is increased, the bearing capacity of a transmission shaft system can be greatly improved, the working conditions of high speed and heavy variable load of the rolling mill gearbox are more adapted, the characteristics of the sliding bearing are utilized to avoid fretting wear of the bearing, and the whole service life of equipment is further prolonged.
2. The invention adopts the double sliding bearing device, ensures that both sides of the rotating part are supported, reduces the unbalanced load influence, increases the working stability of the rotating part, and compared with the traditional tapered roller bearing which is installed in pairs, the sliding bearing can reduce the outer diameter of the bearing under the same bearing capacity, and reduces the linear speed of the outer sleeve of the bearing, thereby reducing the abrasion of the outer sleeve and the rotating part and prolonging the service life of the bearing.
3. According to the invention, the axial and radial dimensions of the outer sleeve in the sliding bearing are actually measured, then the follow-up installation workpiece is subjected to a matched grinding installation mode according to the actually measured dimensions, so that the reasonable range of the axial clearance and the radial clearance of the bearing in the formation of a pressure oil film can be fully ensured, the sliding bearing can form an oil film in operation, the contact surfaces of the inner sleeve and the outer sleeve of the bearing are separated through the oil film formed in the joint surface, the structures of the inner sleeve and the outer sleeve of the sliding bearing are optimized, the axial oil grooves, the radial oil holes and the oil wedges are arranged, and the number and the arrangement relation of the axial oil grooves and the radial oil holes are limited, so that the sliding bearing can be fully lubricated under the condition of relative rotation, the service life of the sliding bearing is further prolonged, and the whole service life of equipment is prolonged.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic illustration of a dual oil film bearing assembly for a rolling mill gearbox in an embodiment;
FIG. 2 is an exploded view of a dual oil film bearing assembly for a rolling mill gearbox in accordance with an embodiment;
FIG. 3 is a cross-sectional view of a first slide bearing;
FIG. 4 is a schematic structural view of the inner sleeve;
FIG. 5 is a cross-sectional view of the inner sleeve;
FIG. 6 is a cross-sectional view of A in FIG. 5;
FIG. 7 is a schematic structural view of the outer jacket;
FIG. 8 is a cross-sectional view of the outer sleeve;
FIG. 9 is a cross-sectional view of B in FIG. 8;
FIG. 10 is a side view of the outer sleeve;
fig. 11 is a cross-sectional view of C in fig. 10.
Reference numerals: the transmission shaft 1, the first sliding bearing 2, the first inner sleeve 21, the first outer sleeve 22, the rotating member 3, the spacer 4, the second sliding bearing 5, the second inner sleeve 51, the second outer sleeve 52, the annular oil groove 251, the radial oil hole 252, the conical flaring 253, the axial oil groove 254, the axial oil groove middle section 2541, the axial oil groove end section 2542, the oil wedge 255, the first diffusion surface 2551, the second diffusion surface 2552, and the flange 256.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 to 11, a dual oil film bearing device for a rolling mill gearbox comprises two sliding bearings installed in pairs, wherein the inner rings of the two sliding bearings are in interference connection with the same transmission shaft 1 in the rolling mill gearbox, the outer rings of the two sliding bearings are in interference connection with the inner hole of the same rotating member 3 in the rolling mill gearbox, so that the rotating member 3 is rotationally connected to the transmission shaft 1, the two sliding bearings are installed oppositely, and a spacer sleeve 4 sleeved on the transmission shaft 1 is arranged between the two sliding bearings.
Specifically, the two sliding bearings are a first sliding bearing 2 and a second sliding bearing 5 which are installed oppositely, the first sliding bearing 2 and the second sliding bearing 5 have the same structure, each sliding bearing has an inner sleeve and an outer sleeve sleeved on the inner sleeve, the first sliding bearing 2 has a first inner sleeve 21 and a first outer sleeve 22, and the second sliding bearing 5 has a second inner sleeve 51 and a second outer sleeve 52;
the outer sleeve is connected with the rotating piece 3 through interference connection, the inner sleeve is in interference connection with the transmission shaft 1, a flange 256 is arranged at one end of the inner sleeve to axially position the outer sleeve, the spacer 14 is arranged between the first inner sleeve 21 and the second inner sleeve 51, the first inner sleeve 21 and the second inner sleeve 51 can be axially positioned, bearing play of the first sliding bearing 2 and the second sliding bearing 5 can be adjusted, and meanwhile lubricating oil can be conveyed to the first sliding bearing 2 and the second sliding bearing 5 at two ends of the lubricating oil conveying device.
Referring to fig. 5 to fig. 6, the inner surface of the inner sleeve is provided with an annular oil groove 251, a plurality of radial oil holes 252 uniformly distributed along the circumferential direction are formed in the annular oil groove 251, conical flares 253 are formed at the positions, close to the outer sleeve, of the tail ends of the radial oil holes 252, and lubricating oil can be smoothly and uniformly injected into the joint surface of the inner sleeve and the outer sleeve along the conical flares 253 and spread to all positions of the inner surface of the outer sleeve.
Referring to fig. 7-11, the inner surface of the outer sleeve is provided with a plurality of axial oil grooves 254 uniformly distributed along the circumferential direction, so as to uniformly distribute the lubricating oil to all positions of the inner surface of the outer sleeve. The width of the middle section 2541 of the axial oil groove 254 is wider than the width of the end sections 2542 of the axial oil groove 254 at two ends of the axial oil groove 254, so that the oil path of the axial oil groove 254 is contracted at two ends, and a certain amount of lubricating oil can be stored on the contact surface of the outer sleeve and the inner sleeve;
the side edge of the outer sleeve, which is contacted with the flange 256 of the inner sleeve, is provided with an oil wedge 255 connected with the axial oil groove 254, the oil wedge 255 is provided with a double-diffusion outer surface, wherein a first diffusion surface 2551 is connected with the axial oil groove 254, and the first diffusion surface 2551 is a triangular surface so as to ensure that lubricating oil is partially stored in an oil expansion port during oil supply; the second diffusion surface 2552 is connected to the first diffusion surface 2551 and is beveled to ensure that the lubricant is able to flow evenly and widely to the non-diffusion port locations, thereby ensuring lubrication at the side of the flange 256 of the outer sleeve and the inner sleeve when the inner sleeve and the outer sleeve are rotated relative to each other.
With reference to fig. 3, preferably, the number of the axial oil grooves 254 is different from that of the radial oil holes 252, and the axial oil grooves 254 and the radial oil holes 252 are partially staggered, so that lubrication can be ensured at the position where the axial oil grooves 254 are not formed when the inner sleeve and the outer sleeve relatively rotate, dry friction caused by direct contact between the surfaces of the inner sleeve and the outer sleeve is avoided, and thus the service life of the sliding bearing is prolonged.
Further, the number of the axial oil grooves 254 is 12, the number of the radial oil holes 252 is 5, and when one of the radial oil holes 252 coincides with the axial oil groove 254, the other radial oil holes 252 are staggered with the axial oil groove 254 by the partially staggered arrangement.
Referring to fig. 1 to 2 with emphasis, a method for installing and adjusting a double oil film bearing device for a rolling mill gearbox comprises the following steps:
1. the first outer sleeve 22 and the second outer sleeve 52 are fixed at the appointed installation position in the inner hole of the rotating piece 3 through interference connection, after the relative position length dimension f of one end of the first outer sleeve 22 and one end of the second outer sleeve 52 far away from each other is measured, the length dimension of the spacer sleeve 4 is matched and ground according to the dimension f, and then the fixed mounting position for mounting the spacer sleeve 4 on the transmission shaft 1 is arranged, so that the inner sleeve is axially limited, and the flange 256 on the inner sleeve is used for axially limiting the outer sleeve, so that the axial clearance of the first sliding bearing 2 and the second sliding bearing 5 which are arranged in pairs after the first inner sleeve 21 and the second inner sleeve 51 are arranged is ensured to be delta 1, such that f+Δ1=the distance between the side of the flange 256 of the first inner sleeve 21 near the first outer jacket 22 and the side of the flange 256 of the second inner sleeve 51 near the second outer jacket 52, i.e., c=f+Δ1-the distance between the side of the flange 256 of the first inner sleeve 21 near the first outer jacket 22 and the side of the flange 256 on the first inner sleeve 21 far from the flange 256-the distance between the side of the flange 256 of the second inner sleeve 51 near the second outer jacket 52 and the side of the flange 256 on the second inner sleeve 51 far from the flange 256, wherein the distance between the side of the flange 256 of the first inner sleeve 21 near the first outer jacket 22 and the side of the flange 256 of the second inner sleeve 51 near the second outer jacket 52 and the side of the flange 256 on the second inner sleeve 51 are fixed values;
2. then, after actual inner diameter dimensions a and b of the outer sleeves of the first outer sleeve 22 and the second outer sleeve 52 are measured respectively, the outer surfaces of the first inner sleeve 21 and the second outer sleeve 22 are subjected to mating grinding, so that the actual outer diameter dimensions d and e are reached, and then the outer surfaces are mounted, thereby ensuring that radial play values of the first sliding bearing 2 and the second sliding bearing 5 are respectively delta 2 and delta 3, wherein a-d=delta 2 and b-e=delta 3.
Wherein the range of the delta 1, the delta 2 and the delta 3 is (0.5 permillage to 3 permillage) (a+b)/2 mm, (0.5 permillage to 3 permillage) a, 0.5 permillage to 3 permillage) b mm.
By limiting the axial clearance of the paired sliding bearings formed by the first sliding bearing 2 and the second sliding bearing 5 to be within the range of delta 1, and the radial clearance values of the first sliding bearing 2 and the second sliding bearing 5 to be within the ranges of delta 2 and delta 3 respectively, the lubricating oil can form an oil film between the inner sleeve and the outer sleeve under a given oil pressure, the dry friction at the joint of the inner sleeve and the outer sleeve is avoided, namely the sliding bearings in the locked state are prevented from working in the fretting state, and the overall service life of the equipment is prolonged.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (10)
1. A double oil film bearing device for a rolling mill gearbox, which is characterized in that: the sliding bearing is provided with an inner sleeve and an outer sleeve sleeved on the inner sleeve, and a pressure oil film is arranged between the inner sleeve and the outer sleeve;
the two sliding bearings are installed oppositely, the inner sleeves of the two sliding bearings are fixedly sleeved on the transmission shaft in the rolling mill gearbox, and the outer sleeves of the two sliding bearings are fixedly connected in the inner hole of the rotating piece in the rolling mill gearbox so as to rotationally connect the transmission shaft with the rotating piece.
2. A double oil film bearing assembly for a rolling mill gearbox according to claim 1, wherein: the outer sleeve is fixedly connected with the rotating piece through interference connection, and the inner sleeve is fixedly connected with the transmission shaft through interference connection.
3. A double oil film bearing assembly for a rolling mill gearbox according to claim 1, wherein: the inner surface of the inner sleeve is provided with an annular oil groove, the annular oil groove is provided with a plurality of radial oil holes which are uniformly distributed along the circumferential direction, and conical flaring is arranged at the position, close to the outer sleeve, of the radial oil holes so as to facilitate the smooth and uniform injection of lubricating oil into the joint surface of the inner sleeve and the outer sleeve.
4. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 3, wherein: a spacer bush sleeved on the transmission shaft is arranged between the two sliding bearings, two ends of the spacer bush are respectively connected with inner sleeves in the two sliding bearings so as to axially limit the sliding bearings, and one end, far away from the spacer bush, of the inner sleeve is provided with a flange so as to axially limit the outer sleeve.
5. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 4, wherein: the inner surface of the outer sleeve is provided with a plurality of axial oil grooves which are uniformly distributed along the circumferential direction, and the side edge of the outer sleeve, which is contacted with the flange of the inner sleeve, is provided with an oil wedge which is connected with the axial oil grooves, so that the side surface contact position is lubricated when the inner sleeve and the outer sleeve relatively rotate.
6. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 5, wherein: the width of the axial oil groove middle section of the axial oil groove is larger than that of the axial oil groove end sections at two ends of the axial oil groove, so that an oil way of the axial oil groove is in a state that two ends of the oil way shrink.
7. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 5, wherein: the oil wedge is provided with a double-diffusion outer surface which is a first diffusion surface and a second diffusion surface connected with the first diffusion surface, wherein the first diffusion surface is connected with the axial oil groove and is a triangular surface, so that lubricating oil can be stored when the first diffusion surface supplies oil;
the second diffusion surface employs an inclined surface to enable uniform and wide flow of lubricating oil to the non-diffusion port location.
8. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 5, wherein: the axial oil grooves and the radial oil holes are different in number and are partially staggered, so that when one radial oil hole is overlapped with the axial oil groove, the rest radial oil holes are staggered with the axial oil groove.
9. The method for installing and adjusting the double oil film bearing device for the rolling mill gearbox is characterized by comprising the following steps of:
a. pressing the outer sleeves of two sliding bearings installed in pairs into the inner holes of rotating parts in a rolling mill gearbox;
b. the length dimensions of the relative positions of the two ends of the two outer sleeves are measured, the spacer bush is matched and ground according to the measured length dimensions of the relative positions of the two ends of the two outer sleeves and then is arranged on a transmission shaft in a rolling mill gearbox, so that the inner sleeves of the two sliding bearings are axially limited through the spacer bush, and the axial clearance of the two sliding bearings is within the range of delta 1;
c. after actual inner diameter sizes of the two outer sleeves are actually measured, the outer diameter sizes of the inner sleeves of the sliding bearings corresponding to the actual inner diameter sizes of the two outer sleeves are matched and ground and then are arranged on the transmission shaft, so that the radial clearance of the two sliding bearings is ensured to be respectively in the range of delta 2 and delta 3;
the Δ1, Δ2 and Δ3 are limited to a reasonable extent that the two paired mounted plain bearings are capable of forming a pressure oil film, such that the two paired mounted plain bearings form a pressure oil film between the inner and outer sleeves at a given oil pressure, and the mounting adjustment of the dual oil film bearing arrangement is completed.
10. A dual oil film bearing assembly for a rolling mill gearbox as claimed in claim 9, wherein: let the actual inner diameter dimensions of the inner sleeves of the two sliding bearings be a and b respectively, then Δ1 is (0.5-3 mill) (a+b)/2 mm, Δ2 is (0.5-3 mill) a mm, and Δ3 is (0.5-3 mill) b mm, so that the two paired sliding bearings form a pressure oil film between the inner sleeve and the outer sleeve under a given oil pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311125958.9A CN117189852A (en) | 2023-09-01 | 2023-09-01 | Double oil film bearing device for rolling mill gearbox and installation and adjustment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311125958.9A CN117189852A (en) | 2023-09-01 | 2023-09-01 | Double oil film bearing device for rolling mill gearbox and installation and adjustment method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117189852A true CN117189852A (en) | 2023-12-08 |
Family
ID=88999183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311125958.9A Pending CN117189852A (en) | 2023-09-01 | 2023-09-01 | Double oil film bearing device for rolling mill gearbox and installation and adjustment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117189852A (en) |
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2023
- 2023-09-01 CN CN202311125958.9A patent/CN117189852A/en active Pending
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