CN212202843U - Tilting pad support bearing for speed-up gear box - Google Patents
Tilting pad support bearing for speed-up gear box Download PDFInfo
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- CN212202843U CN212202843U CN202020684822.7U CN202020684822U CN212202843U CN 212202843 U CN212202843 U CN 212202843U CN 202020684822 U CN202020684822 U CN 202020684822U CN 212202843 U CN212202843 U CN 212202843U
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Abstract
The utility model discloses a tilting pad support bearing for speed-up gear box, which belongs to the technical field of bearing design, and comprises a bearing shell, tilting pads, a pad back limit screw, an oil injection screw, a sealing end cover A, a sealing end cover B, an end cover fastening screw, a pad end face limit screw, a temperature measuring wire clamp, a wire clamp fastening screw and a flange, wherein the sealing end cover A and the sealing end cover B are arranged at two ends of the bearing shell, the tilting pads are arranged in the bearing shell, the oil injection screw and the pad back limit screw are respectively arranged on the side wall of the bearing shell, the end cover fastening screw is respectively arranged on the sealing end cover A and the sealing end cover B, the pad end face limit screw is respectively arranged between the sealing end cover A, the sealing end cover B and the tilting pads, the flange, the temperature measuring wire clamp and the wire clamp fastening screw are arranged on the sealing end cover B, the bearing structure is reasonable in design, safe and reliable, long service life.
Description
Technical Field
The utility model belongs to the technical field of bearing design technique and specifically relates to an acceleration gear is with tilting pad support bearing is related to.
Background
The gearbox is indispensable equipment in the engineering machinery as a speed and energy transmission device. The tilting pad radial bearing is a bearing form with the best stability, and usually consists of a plurality of tilting pads poured with Babbitt metal, the tilting pads can automatically adjust the inclination of the pads along with the change of load and speed to form a plurality of oil wedges and dynamic pressure oil films, the pad back of each pad is in line contact with the bearing body, and the tilting pads can swing to adjust the oil film clearance during working, so the tilting pads have good vibration attenuation performance, and are mainly applied to high-speed light-load equipment such as a steam turbine, a compressor, turbine equipment, a pump and the like.
The fluid supporting tilting pad sliding bearing comprises a bearing shell, wherein a bearing pad block is arranged on the inner surface of the bearing shell, two sides of the bearing shell are connected with a bearing end cover, a mechanical shaft penetrates through a through hole of the bearing pad block to form interference fit, two ends of the mechanical shaft are arranged in a strip-shaped hole in the bearing end cover to allow the bearing pad block to float radially, an oil supply groove is formed in the outer surface of the bearing shell, an oil supply conduit is arranged on the bearing shell and the bearing pad block, an oil groove is arranged on the inner surface of the bearing pad block and is communicated with the oil groove through the oil supply conduit, a small central hole is formed in the bearing pad block, a static pressure cavity is arranged on the outer surface of the bearing pad block and enables a shaft neck to be communicated with a dynamic pressure oil film area generated by a wedge-shaped convergence gap formed in the inner surface of the bearing pad block through the small central hole, an oil drainage groove is arranged on the bearing end cover and enables lubricating oil in the bearing, the utility model discloses can reduce the bearing to outside high fuel feeding pressure's dependence, be convenient for assemble and carry out the monitoring of tile state.
The bearing has the following disadvantages:
firstly, for guaranteeing the installation concentricity of two support bearings of the rotor, the requirements on the installation size and form and position tolerance of the bearings are generally higher, the processing difficulty is high, and the production is inconvenient.
Secondly, the self-adaptive centering function of the radial pad can not be realized, the centering and deflection of the rotor can not be sensitive, the temperature of the bearing bush is increased, the friction power consumption is large, a complete oil film can not be established, and the vibration is abnormal.
Thirdly, the temperature measuring hole and the temperature measuring element are not arranged, the condition of temperature rise in the bearing cannot be detected, and the tile is easy to burn under continuous high-speed work.
Fourth, there is no mounting bracket for the wire to be fixed, resulting in possible wire failure to be fixed and resulting in installation interference.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an increasing gear is with tilting pad support bearing to solve among the prior art the processing degree of difficulty height, can not self-adaptation adjustment, can not detect the technical problem of inside temperature.
The utility model provides a tilting pad supporting bearing for a speed increasing gear box, which adopts an asymmetric five-pad tilting pad structure and comprises a bearing shell, tilting pads, a pad back limiting screw, an oil injection screw, a sealing end cover A, a sealing end cover B, an end cover fastening screw, a pad end face limiting screw, a temperature measuring wire clamp, a wire clamp fastening screw and a flange, the sealing end covers A and B are arranged at two ends of the bearing shell, the tilting pad is arranged in the bearing shell, the oil injection screw and the tile back limiting screw are respectively arranged on the side wall of the bearing shell, the end cover fastening screw is respectively arranged on the sealing end cover A and the sealing end cover B, the tile end face limiting screws are respectively installed between the sealing end cover A, the sealing end cover B and the tilt tile, and the flange, the temperature measuring wire clamp and the wire clamp fastening screws are arranged on the sealing end cover B.
Furthermore, the surface of the sealing cover B is the B surface end of the bearing shell, the A end of the bearing shell is smaller than the disc surface of the B end, the flange is sleeved on the B surface end of the bearing shell, the bottom surface of the flange is flush with the B surface end of the bearing shell, five tilting pads are installed on the inner surface of the bearing shell, two temperature measuring holes are respectively arranged on the two end surfaces of two tilting pads, the section of the inner wall surface of the bearing shell is arc-shaped, the radial tilting pads are limited by the oil injection screws limited on two sides and the pad back limiting screws in a combined mode, the two adjacent oil injection screws penetrate through the side wall of the bearing shell and extend from outside to inside to clamp two sides of the tilting pads, the pad back limiting screws penetrate through the side wall of the bearing shell and extend from outside to inside to abut against the back of the tilting pads, and the oil injection screws penetrate through the inside of the bearing shell, the oil injection screw is of a screw structure with an oil nozzle, oil is supplied from the outside and is directly injected into the inner side of the tilting pad and an oil inlet edge of a rotor of the gearbox, the arc-shaped inner wall of the bearing shell and the back of the radial tilting pad are in point contact bearing under the collision of the pad back limiting screw, and the bearing shell and the tilting pad are made of high-strength alloy steel and are subjected to quenching, tempering and normalizing treatment.
Furthermore, the surface where the sealing end cover A is located is the surface A end of the bearing shell, the sealing end cover A and the sealing end cover B are fixed on the surface A end and the surface B end of the bearing shell through a plurality of end cover fastening screws respectively, pin holes are formed in the inner sides of the sealing end cover A and the sealing end cover B and the corresponding positions on the bearing shell, the sealing end cover A and the sealing end cover B are fixed and limited with the bearing shell through a plurality of tile end face limiting screws respectively, an outer cylinder is arranged outside the bearing shell, and the outer cylinder and the bearing shell are in clearance fit.
Furthermore, two temperature measuring holes corresponding to temperature measuring points on the tilting pads are respectively arranged on the sealing end cover A and the sealing end cover B, a plurality of oil outlet holes are respectively arranged on the outer sides of the sealing end cover A and the sealing end cover B, three temperature measuring wire clamps are arranged on the flange through hexagon socket head flat head screws, and the temperature measuring wire clamps are of open nose-shaped structures.
Further, the bearing shell is of a monolithic structure.
Furthermore, the tilting pad base body is made of copper alloy materials, and a spherical supporting structure is added on the pad back.
Compared with the prior art, the beneficial effects of the utility model reside in that:
firstly, the existing bearing has higher requirements on the installation size and form and position tolerance of the bearing for ensuring the installation concentricity of two supporting bearings of a rotor, and the bearing adopts an integral structure and reduces the processing difficulty by means of installation clearance fit and a misalignment compensation structure of a tile block.
Secondly, the function of self-adaptation centering of radial tile can not be realized to current bearing, to the misalignment beat of rotor sensitive, cause the axle bush temperature to rise easily, the friction consumption is big, can't establish complete oil film and cause the unusual of vibration, and this bearing radial tile is the free beat active structure of point support with the bearing housing, the tile supports and is the point support, the all directions homoenergetic beat of tile is adjusted, can self-adaptation transient adjustment according to the operating mode tile, satisfy the operating mode requirement, the misalignment beat of rotor that the improper rotor machining error of compensation bearing installation caused, promote the high-speed stable performance of bearing.
And the radial and thrust pads are lubricating structures for directly spraying oil to the oil spraying screws, so that the oil mixing ratio is greatly reduced, cold oil can directly enter a lubricating surface, the oil inlet lubricating mode can reduce the mixing of hot oil in use, the lubricating temperature rise of an oil film is greatly reduced, the power consumption is reduced, and the lubricating performance is improved.
Fourth, prior art can not give the inside temperature measurement of bearing, and inside high temperature may appear, the risk that the frictional force consumption is big, and this bearing is through setting up temperature measurement point and temperature measurement fastener, can give the inside temperature measurement of bearing, and in time adjustment protects whole bearing not damaged by high temperature, fixes and restricts the position of being qualified for the next round of competitions with the wire simultaneously, prevents that the line from interfering.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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.
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a front view of a surface a of the sealing end cap of the present invention;
FIG. 3 is a cross-sectional view taken along line C-C of FIG. 2;
FIG. 4 is a cross-sectional view taken along line D-D of FIG. 2;
fig. 5 is a front view of a side B of the sealing end cap of the present invention;
fig. 6 is a disassembled view of the end cap a of fig. 2 with the sealing end removed.
Reference numerals: the temperature measuring device comprises a bearing shell 1, an inclinable pad 2, a pad end face limit screw 3, a pad back limit screw 4, a sealing end cover A5, a sealing end cover B6, an oil injection screw 7, an end cover fastening screw 8, a temperature measuring wire clamp 9, a wire clamp fastening screw 10, a flange 11, a pin hole 12, a temperature measuring through hole 13, a temperature measuring point 14, an oil outlet hole 15 and an outer cylinder 16.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 6, an embodiment of the present invention provides an asymmetric five-pad tilting pad structure for a speed-up gear box, which includes a bearing housing 1, tilting pads 2, a pad back limit screw 4, a sealing end cover a5, a sealing end cover B6, an oil injection screw 7, an end cover fastening screw 8, a wire clamp fastening screw 10, a pad end limit screw 3, a wire clamp fastening screw 10, and a flange 11, wherein a surface of the sealing cover B6 is a B-surface end of the bearing housing 1, the flange 11 is sleeved on the B-surface end and a bottom surface of the bearing housing 1 and the B-surface end of the bearing housing 1, and five tilting pads 2 are mounted on an inner surface of the bearing housing 1, so that forces applied to all the tilting pads 2 can be more evenly distributed, wherein two temperature measurement through holes 13 are respectively disposed on two end surfaces of the tilting pads 2, the internal temperature measurement of the bearing is convenient, the cross section of the inner wall surface of the bearing shell 1 is arc-shaped, the radial tilting pad 2 is combined and limited by the limiting oil injection screws 7 and the pad back limiting screws 4 at two sides, the two adjacent limiting oil injection screws 7 penetrate through the side wall of the bearing shell 1 and extend from outside to inside to clamp two sides of the tilting pad 2, the tilting pad 2 is prevented from rotating, the pad back limiting screws 4 penetrate through the side wall of the bearing shell 1 and extend from outside to inside to abut against the back of the tilting pad 2, the situation that the tilting pad 2 collides with the inner wall surface of the bearing shell 1 violently in the operation process is prevented, the abrasion of the tilting pad 2 is accelerated, the oil injection screws 7 penetrate through the bearing shell 1 and are of a screw structure with an oil nozzle, and the oil injection screws 7 are supplied from the outside, the inner side of the tilting pad 2 and the oil inlet edge of the rotor of the gearbox are directly sprayed, so that the whole bearing can be filled with lubricating oil, the inside of the whole bearing can be cooled, meanwhile, the smoothness can be improved, the abrasion of parts can be reduced, in addition, the direct oil spraying oil inlet lubricating mode can reduce the mixing ratio of hot oil during use, so that cold oil can directly enter a lubricating surface, the temperature rise and the power consumption are reduced, because the arc-shaped inner wall of the bearing shell 1 and the radial back of the tilting pad 2 form point contact bearing under the collision of the pad back limiting screw 4, the tilting pad 2 can realize axial and axial micro-swing, so that a wire space can be reserved, the lubricating oil can more easily permeate between the inner wall surface of the bearing shell 1 and the back of the tilting pad 2, and is convenient for discharging impurities to the upper end and the lower end, and reducing the temperature of the parts, the friction force is reduced, the energy is saved, and the bearing shell 1 and the tilting pad 2 are made of high-strength alloy steel and are subjected to quenching, tempering and normalizing treatment so as to improve the hardness and the toughness of the material.
The surface of the sealing end cover A5 is the surface A end of the bearing housing 1, the sealing end cover A5 and the sealing end cover B6 are fixed on the surface A end and the surface B end of the bearing housing 1 through a plurality of end cover fastening screws 8 respectively to prevent falling off, meanwhile, pin holes 12 are arranged at the inner sides of the sealing end cover A5 and the sealing end cover B6 and corresponding positions on the bearing housing 1, the sealing end cover A5 and the sealing end cover B6 are respectively fixed and limited with the bearing housing 1 through a plurality of tile end surface limiting screws 3 to prevent the bearing from being rapidly found out in the installation and repair process and rapidly locating the fixed position relation between the sealing end cover A5 and the sealing end cover B6 and the bearing housing 1, the phenomenon of wrong holes is prevented, an outer cylinder 16 is arranged outside the bearing housing 1, the outer cylinder 16 and the bearing shell 1 are in clearance fit, integral installation is facilitated, in the practical use of the bearing shell 1, the radial tilting pads 2 and the thrust tilting pads 2 are adjusted in a self-adaptive mode according to rotating speed, load and unit machining and assembling errors, so that load distribution is more uniform, adjustment is flexible, misalignment and deflection of a rotor caused by machining errors and installation errors can be compensated, and the high-speed stability performance of the bearing is improved.
The bearing comprises a bearing shell 1, wherein a sealing end cover A5 and a sealing end cover B6 are arranged at two ends of the bearing shell 1, a certain sealing gap is designed, hot oil is confirmed to flow out for heat exchange, two temperature measuring points 14 corresponding to temperature measuring through holes 13 in the tilting pad 2 are respectively arranged on the sealing end cover A5 and the sealing end cover B6 so as to collect temperature data, a plurality of oil outlets 15 are respectively arranged on the outer sides of the sealing end cover A5 and the sealing end cover B6, three temperature measuring wire clamps 9 are arranged on a flange 11 through inner hexagonal flat head screws, the temperature measuring wire clamps 9 are of an open nose-shaped structure, and the temperature measuring wire clamps 9 are used for wiring temperature measuring elements and preventing lead installation interference.
The bearing shell 1 is of an integral structure, and the processing difficulty is reduced by means of installation clearance fit and misalignment compensation of the tilting pad 2.
The base body of the tilting pad 2 is made of copper alloy materials, so that the heat conduction performance is improved, the temperature of a pad surface is reduced, a spherical supporting structure is added on a pad back, and the axial and axial deflection functions of the pad are achieved.
The utility model discloses the principle: the sealing end cover A5, the sealing end cover B6 and the bearing shell 1 form a sealed area, lubricating oil is filled into the inside through the oil injection screw 7 of the oil injection screw 7 under the oil supply pressure of an oil supply system, when the bearing shell 1 starts to rotate, the lubricating oil is brought between the inner wall of the bearing shell 1 and the back of the tilting pad 2, the back of the radial tilting pad 2 and the inner wall of the bearing shell 1 can be supported by the pad back limiting screw 4 as a point to perform free deflection movement, in a gap when the tilting pad 2 realizes axial and axial micro-oscillation, the tilting pad 2 can be adjusted in a self-adaptive transient state according to working conditions, the working condition requirements are met, a dynamic pressure oil film is formed, when equipment reaches high rotating speed, the direction of the temperature measuring wire clamp 9 can be adjusted, temperature data are collected to a temperature measuring point 14 through a temperature measuring element, data are analyzed, and the temperature in the bearing is adjusted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a tilting pad support bearing for speed-increasing gear box, its characterized in that, including bearing housing (1), tilting pad (2), tile back stop screw (4), oil spout screw (7), end cover A (5), end cover B (6), end cover fastening screw (8), tile block terminal surface stop screw (3), temperature measurement fastener (9), fastener fastening screw (10) and flange (11), end cover A (5), end cover B (6) are installed bearing housing (1) both ends, tilting pad (2) are established in bearing housing (1), oil spout screw (7) with tile back stop screw (4) are established respectively on the lateral wall of bearing housing (1), end cover fastening screw (8) are established respectively on end cover A (5), end cover B (6), tile block terminal surface stop screw (3) are installed respectively at end cover A (5), Between the sealing end cover B (6) and the tilting pad (2), the flange (11), the temperature measuring wire clamp (9) and the wire clamp fastening screw (10) are arranged on the sealing end cover B (6).
2. The tilting pad support bearing for the speed increasing gear box according to claim 1, wherein the surface of the sealing end cover B (6) is the B surface end of the bearing housing (1), the flange (11) is sleeved on the B surface end of the bearing housing (1), the bottom surface of the flange is flush with the B surface end of the bearing housing (1), five tilting pads (2) are installed on the inner surface of the bearing housing (1), two temperature measuring through holes (13) are respectively arranged on two end surfaces of two tilting pads (2), the cross section of the inner wall surface of the bearing housing (1) is arc-shaped, the radial tilting pads (2) are combined and limited by two side-limiting oil injection screws (7) and a pad back limiting screw (4), two adjacent oil injection screws (7) penetrate through the side wall of the bearing housing (1) and are clamped and extended from outside to inside on two sides of the tilting pads (2), the tilting pad is characterized in that a pad back limiting screw (4) penetrates through a side wall of a bearing shell (1) from outside to inside to extend to abut against the back of a tilting pad (2), the bearing shell (1) penetrates through an oil injection screw (7), the oil injection screw (7) is of a screw structure with an oil injection nozzle, the oil injection screw (7) is directly injected into the inner side of the tilting pad (2) and an oil inlet edge of a gearbox rotor through external oil supply, the arc-shaped inner wall of the bearing shell (1) and the radial back of the tilting pad (2) form point contact bearing under the collision of the pad back limiting screw (4), and the bearing shell (1) and the tilting pad (2) are made of high-strength alloy steel and are subjected to quenching, tempering and normalizing treatment.
3. A tilting pad support bearing for a speed increasing gear box according to claim 2, the surface of the sealing end cover A (5) is the surface end A of the bearing shell (1), the sealing end cover A (5) and the sealing end cover B (6) are respectively fixed on the surface A end and the surface B end of the bearing shell (1) through a plurality of end cover fastening screws (8), the inner sides of the sealing end cover A (5) and the sealing end cover B (6) are provided with pin holes (12) at corresponding positions on the bearing shell (1), the sealing end cover A (5) and the sealing end cover B (6) are respectively fixed and limited with the bearing shell (1) by a plurality of tile end face limiting screws (3), an outer cylinder (16) is arranged outside the bearing shell (1), and the outer cylinder (16) is in clearance fit with the bearing shell (1).
4. The tilting pad support bearing for the speed increasing gear box according to claim 3, wherein two temperature measuring through holes (13) corresponding to temperature measuring points (14) on the tilting pad block (2) are respectively arranged on the sealing end cover A (5) and the sealing end cover B (6), a plurality of oil outlets (15) are respectively arranged on the outer sides of the sealing end cover A (5) and the sealing end cover B (6), the flange (11) is provided with three temperature measuring wire clamps (9) through inner hexagonal flat head screws, and the temperature measuring wire clamps (9) are of an open nose-shaped structure.
5. A tilting pad support bearing for a speed increasing gear box according to claim 1, wherein said bearing housing (1) is of a unitary construction.
6. The tilting pad support bearing for a speed increasing gear box according to claim 1, wherein the tilting pad (2) base body is made of copper alloy material, and a spherical support structure is added to the pad back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020684822.7U CN212202843U (en) | 2020-04-28 | 2020-04-28 | Tilting pad support bearing for speed-up gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020684822.7U CN212202843U (en) | 2020-04-28 | 2020-04-28 | Tilting pad support bearing for speed-up gear box |
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| Publication Number | Publication Date |
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| CN212202843U true CN212202843U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020684822.7U Active CN212202843U (en) | 2020-04-28 | 2020-04-28 | Tilting pad support bearing for speed-up gear box |
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| CN (1) | CN212202843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442027A (en) * | 2020-04-28 | 2020-07-24 | 宜兴市环宇轴瓦制造有限公司 | Tilting pad support bearing for speed-up gear box |
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2020
- 2020-04-28 CN CN202020684822.7U patent/CN212202843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442027A (en) * | 2020-04-28 | 2020-07-24 | 宜兴市环宇轴瓦制造有限公司 | Tilting pad support bearing for speed-up gear box |
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