CN116357669A - Thrust loading system - Google Patents

Thrust loading system Download PDF

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Publication number
CN116357669A
CN116357669A CN202310123002.9A CN202310123002A CN116357669A CN 116357669 A CN116357669 A CN 116357669A CN 202310123002 A CN202310123002 A CN 202310123002A CN 116357669 A CN116357669 A CN 116357669A
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CN
China
Prior art keywords
oil
bearing
bearing bush
loading device
tile
Prior art date
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Pending
Application number
CN202310123002.9A
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Chinese (zh)
Inventor
朱伟强
郑寅
黄飞龙
沈卫英
阮圣焕
李永斌
翁彬锋
陈梦睿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shenfa Bearing Shell Co ltd
Original Assignee
Zhejiang Shenfa Bearing Shell Co ltd
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Filing date
Publication date
Application filed by Zhejiang Shenfa Bearing Shell Co ltd filed Critical Zhejiang Shenfa Bearing Shell Co ltd
Priority to CN202310123002.9A priority Critical patent/CN116357669A/en
Publication of CN116357669A publication Critical patent/CN116357669A/en
Pending legal-status Critical Current

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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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/048—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for axial load mainly
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • 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
    • F16N—LUBRICATING
    • F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
    • 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
    • F16N—LUBRICATING
    • F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
    • F16N21/02—Lubricating nipples
    • 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
    • F16N—LUBRICATING
    • F16N37/00—Equipment for transferring lubricant from one container to another
    • F16N37/003—Equipment for transferring lubricant from one container to another for filling bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Support Of The Bearing (AREA)

Abstract

The invention discloses a thrust loading system, and relates to the technical field of mechanical bearings. The invention comprises a hydraulic loading device, a rotary transmission system, an axial loading device and a bearing seat assembly, wherein the hydraulic loading device, the rotary transmission system and the axial loading device are installed by taking the bearing seat assembly as a basic supporting frame; the rotary transmission system comprises a rotor pushing disc, the hydraulic loading device comprises a hydraulic cylinder, the end part of a piston rod on the hydraulic cylinder is connected with a pressure sensor, the axial loading device is arranged on a bearing seat assembly between the rotor pushing disc and the pressure sensor, the axial loading device comprises a bearing bush sleeve and a bearing bush body, a mounting cavity with an inner spherical structure is arranged on the bearing bush sleeve, and the bearing bush body is rotatably mounted in the mounting cavity; the tile mounting ring is arranged on the end surface far away from the bearing bush sleeve, and a plurality of tiles are circumferentially arranged in the end surface of the tile mounting ring; the loading system applies an axial load to the force pressure sensor via the hydraulic cylinder, transfers the axial load to the axial loading device and then applies the axial load to the rotor thrust disk.

Description

Thrust loading system
Technical Field
The invention relates to the technical field of mechanical bearings, in particular to a thrust loading system.
Background
At present, the sliding thrust bearing is widely applied to large-scale power generation or power equipment such as thermal power, gas turbines, nuclear power and the like due to the excellent characteristics, and is a key component for bearing the axial thrust of a rotor in a steam turbine and limiting the axial displacement of the sliding thrust bearing to ensure dynamic and static gaps. The thrust bearing in the existing turbine bearing test device is self-adaptively adjusted by means of the linkage mechanisms of the upper and lower balance blocks so as to enable the thrust pads to bear stress, load uniform distribution among the pads is achieved, and finally the characteristic of balancing loads of the rotor thrust disc everywhere is achieved. For example, "a thrust bearing", published in chinese patent literature, publication No. CN204357930U, includes a radial bearing housing, a radial bearing housing annular array has a plurality of thrust pads, a nozzle is provided between any two adjacent thrust pads, a supporting block is provided between a thrust pad and a radial bearing housing, the supporting block includes a spherical bottom and a cylindrical fixing portion, the thrust pad is provided with a circular groove adapted to the fixing portion, the fixing portion is engaged with the circular groove, the bottom is in abutting connection with the radial bearing housing, the thrust pad can automatically adjust the inclination according to the change of the rotational speed and the axial load of the shaft, so as to adapt to the elastic deformation and deflection of different loads, rotational speeds and shafts, and establish a liquid friction state. However, the bearing capacity is small, the self-aligning capacity is low, and the working condition of the bearing in the vibration process cannot be simulated, so that the accuracy of a test result is affected.
Disclosure of Invention
The invention overcomes the defects of small bearing capacity and lower self-potential capacity of a bearing test device in the prior art, and provides a thrust loading system which can effectively improve the bearing capacity and the self-potential capacity, thereby improving the accuracy of system test.
In order to solve the technical problems, the invention adopts the following technical scheme: the thrust loading system comprises a hydraulic loading device, a rotary transmission system, an axial loading device and a bearing seat assembly, wherein the hydraulic loading device, the rotary transmission system and the axial loading device are installed by taking the bearing seat assembly as a basic supporting frame; the rotary transmission system comprises a rotor pushing disc, a hydraulic loading device adopts hydraulic cylinder piston type loading, a force sensor is connected to the end part of a piston rod of the hydraulic cylinder, an axial loading device is arranged on a bearing seat assembly between the rotor pushing disc and the force sensor, the axial loading device comprises a bearing bush sleeve and a bearing bush body, a mounting cavity with an inner spherical structure is arranged on the bearing bush sleeve, and the bearing bush body is rotatably mounted in the mounting cavity; the tile mounting ring is arranged on the end surface far away from the bearing bush sleeve, and a plurality of tiles are circumferentially arranged in the end surface of the tile mounting ring; along with the axial load applied to the force sensor by the loading system through the hydraulic cylinder, the axial load is transferred to the axial loading device and then applied to the rotor thrust disk, wherein the self-positioning capability formed by the bearing bush body and the spherical surface of the bearing bush sleeve can enable the bearing bush body, the bearing block mounting ring and the bearing blocks to form a thrust assembly to swing flexibly in the bearing bush sleeve until each bearing block is attached to the thrust surface of the rotor thrust disk, and further, the uniform transfer of the load from the hydraulic loading system to the rotary transmission system is realized.
The bearing seat assembly comprises a first bearing seat and a second bearing seat, wherein a fixed disc is arranged on the first bearing seat, the hydraulic cylinder is fixedly arranged on the fixed disc, and the bearing seat assembly further comprises an external hydraulic cylinder oil station, two hydraulic pipelines which are respectively positioned at the left side and the right side of the hydraulic cylinder are connected to the hydraulic cylinder oil station, and oil is conveyed to the first oil pipes at different sides through the hydraulic cylinder oil station, so that the hydraulic cylinder can drive a force sensor on a piston rod to move leftwards or rightwards, and the size and the frequency of applied load are controlled; the hydraulic cylinder control cabinet loads a control assembly of the system; the piston rod of the hydraulic cylinder is connected with the force sensor through threads and locked together; the force sensor is fixed with the bearing bush sleeve of the axial loading device by bolts, the applied load can be stably and uniformly transferred to the rotor thrust disc through flexible swing of the loading bearing device, the influence on the accuracy of a bearing test result caused by the fact that the rotor thrust disc is propped and deviated by the load applied by the axial loading device is avoided, and the applied load and the frequency can be monitored and recorded in real time through the force sensor. When the thrust disc surface formed by the rotor thrust disc and the tile surface is not parallel and has large angle deviation or large vibration, the tile and the bearing bush body slide in the spherical center of the installation cavity in the bearing bush sleeve, so that the tile is attached to the thrust surface of the rotor thrust disc, the load distribution of the tile is kept uniform, and the acting force transmission is stable. Therefore, the invention has higher bearing capacity and self-positioning capacity, thereby improving the accuracy of system test.
Preferably, the end face of the tile mounting ring is provided with an annular mounting groove, oil nozzles are arranged in the annular mounting groove at equal intervals in the circumferential direction, the tile is movably mounted between two adjacent oil nozzles, a spherical pad is fixedly arranged on the tile, the spherical pad is provided with a spherical end in a spherical structure, and the spherical end is in point contact with the bottom wall of the mounting groove. When the thrust surface formed by the rotor thrust surface and the tile surface is not parallel, and has small angle deviation or small amplitude vibration, the tile swings freely under the action of the spherical pad, and the fit with the thrust surface of the rotor thrust is adjusted quickly according to the stress.
Preferably, the oil nozzle comprises a cylindrical section, a circular ring section and a nozzle head, wherein the circular ring section and the nozzle head are arranged on the outer wall of the cylindrical section, a plurality of arc-shaped clamping grooves are formed in the tile, an arc-shaped transition groove is formed in the tile, which is close to the opening of the arc-shaped clamping groove, the cylindrical section is arranged in the arc-shaped transition groove, and the circular ring section is arranged in the arc-shaped clamping groove, so that the tile can swing flexibly between two adjacent oil nozzles. This structural design is convenient for realize the small regulation of tile at each angle to the ability of standing oneself of Gao Wakuai is carried.
Preferably, the axial loading device further comprises an oil path structure, the oil path structure comprises a tile body oil groove arranged on the spherical surface of the bearing bush body, an oil inlet communicated with the tile body oil groove is arranged on the bearing bush sleeve, a mounting ring oil groove is arranged on one side of the tile mounting ring, which faces the bearing bush body, a tile body oil channel communicated with the tile body oil groove and the mounting ring oil groove is arranged on the bearing bush body, and a mounting ring oil channel communicated with the oil nozzle and the mounting ring oil groove is also arranged on the tile mounting ring. The spherical surface of the bearing bush body needs to be kept lubricated, and the pressure oil enters the oil groove of the bearing bush body from the bearing box body through the oil inlet hole and overflows from the oil groove of the bearing bush body to lubricate the spherical surface end; meanwhile, oil enters the installation ring oil groove through the tile oil channel, and finally flows into the oil nozzle from the installation ring oil groove to supply oil between thrust tiles. The oil enters the oil nozzle after passing through the spherical end, thereby ensuring the full lubrication of the spherical end of the bearing bush body.
Preferably, the bearing seat assembly is fixedly provided with a sliding sleeve with an annular structure, the sliding sleeve is provided with a sliding groove, the outer wall of the bearing bush sleeve is fixedly provided with an anti-rotation stop block, the bearing bush sleeve is slidably connected in the sliding sleeve, and the anti-rotation stop block is movably connected in the sliding groove. The structural design is convenient for realizing the movement adjustment of the axial loading device when the loading system applies load.
Preferably, a fixed pressing plate is fixedly arranged on the end wall of the opening side of the bearing bush sleeve, an arc shrinkage cavity which gradually shrinks from the bearing bush sleeve to one side of the pad mounting ring is arranged in the fixed pressing plate, and the arc shrinkage cavity is in sliding connection with a part of the spherical surface of the bearing bush body. The structure can realize the limit fixation of the bearing bush body in the bearing bush sleeve, and is convenient for the disassembly and the installation of the bearing bush body.
Preferably, the bearing bush body is provided with an oil storage tank, an oil storage cavity is formed between the oil storage tank and the rotor thrust disc, and an oil outlet channel is arranged on the oil storage cavity. Is convenient for the oil to circulate in and out.
Preferably, the depth of the collar oil groove is greater than the depth of the communication between the collar oil passage and the collar oil groove. The mounting ring oil groove can temporarily store a part of oil, so that the flow stability of the oil entering the oil nozzle is improved.
Preferably, the oil inlet channels are not distributed along the radial direction of the spherical end. The structure reduces the resistance of oil entering the tile oil groove.
Preferably, the bearing bush sleeve is bowl-shaped, the spherical end of the bearing bush body is matched with the shape of the inner surface of the bearing bush sleeve, and an oil storage space is arranged between the bottom of the bearing bush sleeve and the bearing bush body. The bearing bush body and the bearing bush sleeve have large matched contact areas of the inner spherical surface and the outer spherical surface, which is beneficial to improving the bearing capacity; the oil storage space is used for storing a part of oil and is used as a moving space when the bottom of the spherical end rotates, and the oil in the oil storage space can be transferred to the surface of the spherical end for lubrication when the spherical end moves.
Compared with the prior art, the invention has the beneficial effects that: the thrust pad freely swings under the action of the spherical pad during small load, and the bearing bush body slides around the spherical center of the spherical end in the bearing bush sleeve during large load, so that the pad is attached to the thrust surface of the rotor thrust disc, the load distribution of the pad is kept uniform, stable transmission of acting force can be realized, and the self-positioning capability of a sufficient loading system can be kept under both large load and small load.
Drawings
FIG. 1 is a schematic illustration of a thrust loading system of the present invention;
FIG. 2 is a left side view of the axial loading device of the present invention;
FIG. 3 is a cross-sectional view taken at "A-A" in FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3 at "C";
FIG. 5 is a cross-sectional view taken at "B-B" in FIG. 2;
FIG. 6 is an exploded view of the axial loading device of the present invention;
FIG. 7 is an isometric view of a shoe mounting ring of the present invention;
in the figure: a bearing housing assembly 100; bearing seat one 101; a second bearing seat 102; a fixed disk 103; a hydraulic cylinder 104; a force sensor 105; a hydraulic cylinder station 106; a hydraulic pipe 107; a hydraulic cylinder control cabinet 108; an axial loading device 201; bearing bush 202; a bushing body 203; a mounting cavity 204; a tile mounting ring 205; a tile 206; an annular mounting groove 207; an oil jet 208; a spherical pad 209; a spherical end 210; a cylindrical section 211; a ring segment 212; a nozzle head 213; an arcuate slot 214; an arcuate transition slot 215; a sliding sleeve 216; a chute 217; anti-rotation stop block 218; a fixed platen 219; arc shrinkage 220; the rotor pushes the disc 301; an oil path structure 401; a tile oil groove 402; a mounting ring oil groove 403; a tile oil passage 404; a collar oil passage 405; an oil storage chamber 406; an oil outlet passage 407, an oil storage space 408; and an oil inlet hole 409.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following further describes the technical scheme of the invention in detail through specific embodiments and with reference to the accompanying drawings:
example 1: the thrust loading system comprises a hydraulic loading device, a rotary transmission system, an axial loading device and a bearing seat assembly 100, wherein the hydraulic loading device, the rotary transmission system and the axial loading device are installed by taking the bearing seat assembly as a basic supporting frame; the bearing seat assembly comprises a first bearing seat 101 and a second bearing seat 102, a fixed disc 103 is arranged on the first bearing seat 101, a hydraulic cylinder 104 is fixedly arranged on the fixed disc 103, and an axial loading device 201 is arranged on the second bearing seat 102; the rotation transmission system includes a rotor thrust plate 301 and a rotor driving device, where the rotor driving device is used to drive the rotor thrust plate to rotate, and the rotor driving device is in the prior art and will not be described herein. The hydraulic loading device adopts hydraulic cylinder piston type loading, the end part of a piston rod on the hydraulic cylinder 104 is connected with a force sensor 105, and the piston rod of the hydraulic cylinder 104 is connected with the force sensor 105 through threads and locked together; the force sensor 105 is fixedly connected with the axial loading device 201 by bolts; the hydraulic cylinder oil station 106 is connected with two hydraulic pipelines 107 which are respectively positioned at the left side and the right side of the hydraulic cylinder, and the hydraulic cylinder can drive a force sensor on a piston rod to move leftwards or rightwards through the hydraulic cylinder oil station to convey oil to the oil pipes at different sides, so that the size and the frequency of applied load are controlled. The hydraulic cylinder control cabinet 108 is a control assembly of the loading system.
The axial loading device 201 is arranged on a bearing seat assembly between the rotor pushing disc 301 and the force sensor 105, the axial loading device 201 comprises a bearing bush sleeve 202 and a bearing bush body 203, the bearing bush sleeve 202 is provided with an installation cavity 204 with an inner spherical structure, and the bearing bush body 203 is rotatably installed in the installation cavity 204; the shoe mounting ring 205 is arranged on the end surface far away from the bearing bush sleeve 202, twelve shoes 206 are circumferentially arranged in the end surface of the shoe mounting ring 205, each shoe comprises a thrust shoe and a temperature measuring thrust shoe, and the two shoes have the same structure, wherein the temperature measuring thrust shoe is provided with a temperature measuring element on the thrust shoe and is used for monitoring the temperature of the shoe surface when the shoe surface and the rotor thrust disc are in working fit, and the working state of the axial loading device can be accurately detected through the change condition of the temperature; along with the axial load applied to the force sensor 105 by the loading system through the hydraulic cylinder 104, the axial load is transferred to the axial loading device 201 and then applied to the rotor thrust disc 301, wherein the self-positioning capability formed by the bearing bush body 203 and the spherical surface of the bearing bush 202 can enable the bearing bush body 203, the bearing bush mounting ring 205 and the bearing bush 206 to form a thrust assembly to flexibly swing in the bearing bush 202 until each bearing bush 206 is attached to the thrust surface of the rotor thrust disc 301, so that the load of the hydraulic loading system to the rotary transmission system is uniformly transferred.
The end face of the tile mounting ring 205 is provided with an annular mounting groove 207, oil nozzles 208 are circumferentially equidistant in the annular mounting groove 207, the tile 206 is movably mounted between two adjacent oil nozzles 208, a spherical pad 209 is fixedly arranged on the tile 206, the spherical pad 209 is provided with a spherical end 210 in a spherical structure, and the spherical end 210 is in point contact with the bottom wall of the mounting groove 207. When the thrust surface formed by the rotor thrust disk 301 and the tile 206 is not parallel, has small angle deviation or small amplitude vibration, the tile 206 swings freely under the action of the spherical pad 209, and is quickly adjusted to be attached to the thrust surface of the rotor thrust disk according to the stress.
The oil spray nozzles 208 comprise a cylindrical section 211, a circular ring section 212 and a nozzle head 213, wherein the circular ring section 212 and the nozzle head 213 are arranged on the outer wall of the cylindrical section 211, arc clamping grooves 214 are formed in two side walls of the tile 206, arc transition grooves 215 are formed in the tile 206 close to the opening of each arc clamping groove 214, the cylindrical section 211 is arranged in each arc transition groove 215, and the circular ring section 211 is arranged in each arc clamping groove 214, so that the tile 206 can swing flexibly between two adjacent oil spray nozzles 208. This structural design facilitates the fine adjustment of the pad 206 at various angles, thereby enhancing the self-positioning ability of Gao Wakuai 206.
The flexible swing of the loading bearing device 201 ensures that the applied load can be stably and uniformly transferred to the rotor thrust disc 301, and the influence on the accuracy of the bearing test result caused by the fact that the rotor thrust disc 301 is biased upwards by the load applied by the axial loading device 201 is avoided, and the magnitude and the frequency of the applied load can be monitored and recorded in real time through the force sensor 105.
When the thrust surface formed by the rotor thrust surface 301 and the pad 206 is not parallel, and has small angle deviation or small amplitude vibration, the pad swings freely under the action of the spherical pad, and is quickly adjusted to be attached to the rotor thrust surface according to the stress. When the thrust surface formed by the rotor thrust disk 301 and the tile 206 is not parallel and has large angle deviation or large vibration, the tile 206 and the bearing shell 203 slide in the sphere center of the mounting cavity 204 in the bearing shell 202, so that the tile 206 is attached to the thrust surface of the rotor thrust disk 301, the load distribution of the tile 206 is kept uniform, and the acting force transmission is stable. Therefore, the invention has the capability of keeping enough self-positioning under both large load and small load, thereby improving the accuracy of the system test.
A sliding sleeve 216 with an annular structure is fixedly arranged on the bearing seat II 102, a sliding groove 217 is arranged on the sliding sleeve 216, an anti-rotation stop block 218 is fixedly arranged on the outer wall of the bearing bush sleeve 202, the bearing bush sleeve 202 is slidably connected in the sliding sleeve 216, and the anti-rotation stop block 218 is movably connected in the sliding groove. The structural design is convenient for realizing the movement adjustment of the axial loading device when the loading system applies load.
A fixed pressing plate 219 is fixedly arranged on the end wall of the opening side of the bearing bush sleeve 202, an arc shrinkage cavity 220 which gradually shrinks from the bearing bush sleeve 202 to the bearing bush mounting ring 205 side is arranged in the fixed pressing plate 219, and the arc shrinkage cavity 220 is in sliding connection with part of the spherical surface of the bearing bush body 203. The structure can realize the limit fixation of the bearing bush body 203 in the bearing bush sleeve 202, and is convenient for the disassembly and the installation of the bearing bush body 203.
Still include oil circuit structure 401 in the axial loading device 201, oil circuit structure 401 is including setting up the tile body oil groove 402 on the sphere of the axle bush body 203, be provided with the inlet port 409 with the intercommunication of tile body oil groove 402 on the axle bush cover 202, tile installation ring 205 is provided with installation ring oil groove 403 towards axle bush body 203 one side, be provided with the tile body oil duct 404 of the intercommunication tile body oil groove 402 and installation ring oil groove 403 on the axle bush body 203, still be provided with the installation ring oil duct 405 of intercommunication nozzle 208 and installation ring oil groove 403 on the tile installation ring 205.
An oil storage groove is arranged on the bearing bush body 203, an oil storage cavity 406 is formed between the oil storage groove and the rotor thrust disc 301, and an oil outlet channel 407 is arranged on the oil storage cavity 406. The oil liquid can be conveniently circulated in and out; the oil liquid is generally lubricating oil for turbine oil.
The collar oil groove 403 has a depth greater than the depth at which the collar oil passage 405 communicates with the collar oil groove 403. The collar oil groove 403 can temporarily store a portion of the oil, improving the flow stability of the oil into the oil jet 208. The oil feed passage 407 is not radially distributed along the spherical end. This configuration reduces the resistance of the oil entering the shoe groove 402.
The bearing bush 202 is bowl-shaped, the spherical end of the bearing bush body 203 is adapted to the shape of the inner surface of the bearing bush 202, and an oil storage space 408 is arranged between the bottom of the bearing bush 202 and the bearing bush body 203. The bearing bush body and the bearing bush sleeve have large matched contact areas of the inner spherical surface and the outer spherical surface, which is beneficial to improving the bearing capacity; the oil storage space is used for storing a part of oil and is used as a moving space when the bottom of the spherical end rotates, and the oil in the oil storage space 408 can be transferred to the spherical surface of the bearing bush body for lubrication when the spherical surface of the bearing bush body moves.
The spherical surface of the bearing bush body 203 needs to be kept lubricated, and the oil liquid enters the bush body oil groove 402 from the bearing box body through the oil inlet hole 403 and overflows from the bush body oil groove 402 to lubricate the spherical surface of the bearing bush body; at the same time, the oil enters the installation ring oil groove 403 through the tile oil channel 404, and finally flows into the oil nozzle 208 from the installation ring oil groove 403 to supply oil between the tiles 206. The oil passes through the spherical surface of the bearing shell body and then enters the oil nozzle 208, so that the full lubrication of the spherical surface of the bearing shell body 203 is ensured.
The beneficial effects of this embodiment include:
(1) The bearing pad freely swings under the action of the spherical pad under the small load, and the bearing pad body slides around the spherical center of the spherical surface in the bearing pad sleeve under the large load, so that the bearing pad is attached to the thrust surface of the rotor thrust disc, the load distribution of the bearing pad is kept uniform, and the acting force is stably transmitted in the loading system, namely, enough self-positioning capability can be kept under both the large load and the small load;
(2) The lubricating liquid enters the oil nozzle after passing through the bearing bush body, so that the lubricating effect is improved, and meanwhile, the oil way and oil supply equipment are reduced, thereby improving the contact area between the bearing bush block and the bearing bush body and improving the bearing capacity of the thrust bearing;
(3) The arrangement of the oil storage tank reduces the overall weight and shifts the gravity center, the bearing bush body keeps the posture, and the pressure of the lower part of the bearing bush body and the bearing bush sleeve is reduced, so that lubricating oil can enter the lower part of the bearing bush body more easily.
The above-described embodiments are merely preferred embodiments of the present invention, and the present invention is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims (10)

1. The thrust loading system comprises a hydraulic loading device, a rotary transmission system and a bearing seat assembly, wherein the hydraulic loading device, the rotary transmission system and the axial loading device are installed by taking the bearing seat assembly as a basic supporting frame; the rotary transmission system comprises a rotor pushing disc, a hydraulic loading device adopts hydraulic cylinder piston type loading, a force sensor is connected to the end part of a piston rod of the hydraulic cylinder, and an axial loading device is arranged on a bearing seat assembly between the rotor pushing disc and the force sensor, and is characterized in that the axial loading device comprises a bearing bush sleeve and a bearing bush body, a mounting cavity with an inner spherical structure is arranged on the bearing bush sleeve, and the bearing bush body is rotatably mounted in the mounting cavity; the tile installation ring is arranged on the end face far away from the bearing bush sleeve, and a plurality of tiles are circumferentially arranged in the end face of the tile installation ring.
2. The thrust loading system of claim 1, wherein the end face of the tile mounting ring is provided with annular mounting grooves, oil nozzles are circumferentially equidistant in the annular mounting grooves, the tile is movably mounted between two adjacent oil nozzles, a spherical pad is fixedly arranged on the tile, the spherical pad is provided with a spherical end in a spherical structure, and the spherical end is in point contact with the bottom surface of the mounting groove.
3. The thrust loading system of claim 2, wherein the oil spray nozzles comprise a cylindrical section, a circular ring section and a nozzle head, wherein the circular ring section and the nozzle head are arranged on the outer wall of the cylindrical section, a plurality of arc-shaped clamping grooves are formed in the tile, an arc-shaped transition groove is formed in the tile close to the opening of the arc-shaped clamping groove, the cylindrical section is arranged in the arc-shaped transition groove, and the circular ring section is arranged in the arc-shaped clamping groove, so that the tile can swing flexibly between two adjacent oil spray nozzles.
4. A thrust loading system according to claim 3, further comprising an oil path structure in the axial loading device, wherein the oil path structure comprises a bush oil groove arranged on the spherical surface of the bush body, the bush sleeve is provided with an oil inlet communicated with the bush oil groove, the bush mounting ring is provided with a mounting ring oil groove towards one side of the bush body, the bush body is provided with a bush oil passage communicated with the bush oil groove and the mounting ring oil groove, and the bush mounting ring is further provided with a mounting ring oil passage communicated with the oil nozzle and the mounting ring oil groove.
5. The thrust loading system of any one of claims 1 to 4, wherein a sliding sleeve having an annular structure is fixedly arranged on the bearing seat assembly, a sliding groove is arranged on the sliding sleeve, an anti-rotation stop block is fixedly arranged on the outer wall of the bearing sleeve, the bearing sleeve is slidably connected in the sliding sleeve, and the anti-rotation stop block is slidably connected in the sliding groove.
6. The thrust loading system of claim 5, wherein a fixed pressing plate is fixedly arranged on the end wall of the opening side of the bearing bush sleeve, an arc shrinkage cavity gradually shrinking from the bearing bush sleeve to one side of the pad mounting ring is arranged in the fixed pressing plate, and the arc shrinkage cavity is in sliding connection with a part of the spherical surface of the bearing bush body.
7. A thrust loading system according to claim 1 or 2 or 3 or 4 or 6, wherein the bearing bush body is provided with an oil storage tank, an oil storage cavity is formed between the oil storage tank and the rotor thrust disc, and an oil outlet channel is formed in the oil storage cavity.
8. A thrust loading system according to claim 3, wherein the collar oil gallery is deeper than the depth of the collar oil gallery at which it communicates with the collar oil gallery.
9. A thrust loading system according to claim 3, wherein said oil feed passages are not radially distributed along the spherical end.
10. The thrust loading system of claim 1, wherein the bushing is bowl-shaped, the spherical end of the bushing body conforms to the shape of the inner surface of the bushing, and an oil storage space is provided between the bottom of the bushing and the bushing body.
CN202310123002.9A 2023-02-16 2023-02-16 Thrust loading system Pending CN116357669A (en)

Priority Applications (1)

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CN202310123002.9A CN116357669A (en) 2023-02-16 2023-02-16 Thrust loading system

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CN116357669A true CN116357669A (en) 2023-06-30

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