CN115488819B - Device and method for dismounting thrust bush of spring strut type thrust bearing - Google Patents
Device and method for dismounting thrust bush of spring strut type thrust bearing Download PDFInfo
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- CN115488819B CN115488819B CN202211079680.1A CN202211079680A CN115488819B CN 115488819 B CN115488819 B CN 115488819B CN 202211079680 A CN202211079680 A CN 202211079680A CN 115488819 B CN115488819 B CN 115488819B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000670 limiting effect Effects 0.000 claims abstract description 54
- 238000012546 transfer Methods 0.000 claims abstract description 34
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 210000001503 joint Anatomy 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 73
- 238000009434 installation Methods 0.000 claims description 7
- 239000010723 turbine oil Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000035874 Excoriation Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- 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)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
A spring strut type thrust bearing thrust tile dismounting device and method comprises an inner track, a middle track, an outer track and a transfer trolley for supporting the thrust tile to move on each track; the inner rail comprises a positioning rail on one side and a limiting rail on the other side, the positioning rail and the limiting rail are respectively connected with one end of the middle rail, and the other end of the middle rail is in butt joint with the outer rail; the transfer trolley comprises a left fixed wheel frame, a right fixed wheel frame, a left supporting wheel and a right supporting wheel, wherein in a use state, the left fixed wheel frame, the right fixed wheel frame, the left supporting wheel and the right supporting wheel are independently arranged on the side face of the thrust tile; the device also comprises a jacking bolt for jacking the thrust tile. Through the structure, the thrust tile can be quickly, conveniently and safely disassembled and assembled, a convenient environment is created for cleaning the oil groove of the unit, and reliable guarantee is provided for overhauling or installing the unit.
Description
Technical Field
The invention relates to the technical field of installation and maintenance of hydraulic generator sets, in particular to a device and a method for dismounting a thrust shoe of a spring strut type thrust bearing.
Background
After the axis of the hydroelectric generating set is adjusted, the thrust bearing needs to be pulled out, the spring column is taken out to thoroughly clean the oil groove, and damage to the subsequent operation of the hydroelectric generating set caused by iron shaving and other particles in the area where the spring column is located is avoided. The spring column of a thrust tile of a certain 85-kilowatt hydroelectric generating set is 52mm in height, the top rotor of the set is 0-20 mm in height, the thrust tile is difficult to extract, and in order to ensure the smooth disassembly and assembly of the thrust tile, the inventor designs a set of thrust tile disassembly and assembly method for the upper rail of the single-side top tile by combining the structural characteristics of a thrust bearing, and the method is successfully applied in the disassembly and assembly process of the thrust tile of the set.
Although CN 102463447A discloses a "dismounting device and dismounting method for thrust bearing bracket" which is applicable to elastic oil tank type thrust bearings, it is not applicable to spring strut type thrust bearings. And the thrust tile is forcibly pulled out of the elastic oil tank of the thrust bearing, so that the risk of abrasion of the bottom surface of the thrust tile is high. In the disassembly and assembly process, the thrust tile can be pulled out only by arranging a lifting point and a plurality of fixed points are arranged in a circle of the oil groove, so that the use is inconvenient.
Disclosure of Invention
The invention aims to solve the technical problems that: the problem existing in the background technology is solved, and the spring strut type thrust bearing thrust tile dismounting device is provided, so that the thrust tile is dismounted rapidly, conveniently and safely, a convenient environment is created for cleaning the oil groove of the unit, and reliable guarantee is provided for overhauling or mounting the unit.
Another technical problem to be solved by the invention is: the method for assembling and disassembling the thrust bearing by adopting the spring strut type thrust bearing assembling and disassembling device is provided.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: a spring strut type thrust bearing thrust tile dismounting device comprises an inner track, a middle track, an outer track and a transfer trolley for supporting a thrust tile to move on each track; the inner rail comprises a positioning rail on one side and a limiting rail on the other side, the positioning rail and the limiting rail are respectively connected with one end of the middle rail, and the other end of the middle rail is in butt joint with the outer rail; the transfer trolley comprises a left fixed wheel frame, a right fixed wheel frame, a left supporting wheel and a right supporting wheel, wherein in a use state, the left fixed wheel frame, the right fixed wheel frame, the left supporting wheel and the right supporting wheel are independently arranged on the side face of the thrust tile; the device also comprises a jacking bolt for jacking the thrust tile.
The positioning rail comprises a first rail supporting plate, one side of the upper part of the first rail supporting plate is provided with a limit strip, one end of the first rail supporting plate is vertically connected with a first connecting plate, a first connecting hole is formed in the first connecting plate, and the positioning rail is connected with the middle rail through the first connecting plate; the bottom of the first track supporting plate is provided with a positioning step and a first supporting body for supporting the first track supporting plate.
The limiting rail comprises a second rail supporting plate, a limiting groove is formed in the upper portion of the second rail supporting plate along the length direction, one end of the second rail supporting plate is vertically connected with a second connecting plate, a second connecting hole is formed in the second connecting plate, and the limiting rail is connected with the middle rail through the second connecting plate; the bottom of the second track supporting plate is provided with a second supporting body for supporting the second track supporting plate.
The middle rail comprises a plurality of middle rail seats, and a middle positioning rail and a middle limiting rail which are arranged at two ends of the middle rail seats; the middle track seat is positioned on two sides of the middle positioning track and the middle limiting track and is provided with first adjusting threaded holes; one ends of the middle positioning rail and the middle limiting rail are respectively provided with a third connecting plate, the third connecting plates are provided with third connecting holes, and the middle rail is fixedly connected with the positioning rail and the limiting rail through the third connecting plates.
The outer rail comprises a plurality of outer rail seats, and an outer positioning rail and an outer limiting rail which are arranged at two ends of the outer rail seats; the outer track seat is positioned on two sides of the outer positioning track and the outer limiting track and is provided with second adjusting threaded holes; one end of the external positioning rail and one end of the external limiting rail are respectively provided with a fourth connecting plate, and a fourth connecting hole is formed in the fourth connecting plate; an extension section is respectively arranged at one end of the outer positioning track and one end of the outer limiting track, which are close to the middle track; in the use state, the external track is connected with the thrust oil window through the fourth connecting plate, and the extension section stretches through the thrust oil window to be in butt joint with the middle track.
The middle part of the outer track is provided with a plurality of hydraulic jacks for jacking the thrust tiles, and the hydraulic jacks are arranged on the outer track seat.
The left fixed wheel frame and the right fixed wheel frame are of symmetrical structures; the left fixed wheel frame comprises a supporting rod, one end of the supporting rod is provided with a first bolt, the first bolt extends out of the side face of the supporting rod, the lower end of the first bolt is provided with a first roller, and the other end of the supporting rod is provided with a first fixing hole located on the side face of the first bolt extending out.
The left supporting wheel and the right supporting wheel are of symmetrical structures; the left support wheel comprises an L-shaped support, one side of the support is provided with a second fixing hole, the other side of the support is provided with a waist-shaped hole, the upper end of the second roller is provided with an adjusting bolt, and the adjusting bolt penetrates through the waist-shaped hole and is fixedly connected with the support through a nut.
The top tile bolt comprises a top tile block, and a second bolt is arranged on one side of the top tile block.
A method for dismounting a thrust shoe by adopting a spring strut type thrust bearing thrust shoe dismounting device comprises the steps of dismounting and mounting:
s1, removing the thrust tile:
s1.1 top rotor preparation: the air brake is withdrawn, a dial indicator is erected to monitor the jacking quantity of the thrust head, the rotor brake ring and the water turbine shaft, a top rotor oil pump pipeline is connected, and a top rotor oil pump is started, so that the pressure of the top rotor oil pump reaches 2/3 of the rated pressure of the top rotor, and the pressure is maintained for 10 minutes without leakage and then is released;
s1.2 top rotor: starting a high-pressure oil load reduction system, starting a rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1-2 mm; when the lifting amount of the water turbine shaft reaches 18-20 mm, closing a top rotor oil pump, and putting into a brake for locking;
s1.3, oil discharge: connecting oil discharge equipment of a deduction oil groove, starting an oil discharge pump, and discharging turbine oil in the oil groove;
s1.4, preparation work for dismounting the thrust tile: dismantling a side window of the thrust oil groove, dismantling a branch pipe of the high-pressure oil relief system, a branch pipe of the thrust shoe cooling oil, a circumferential limit device of the thrust shoe, and cleaning the thrust oil groove;
s1.5, jacking a thrust tile: mounting a jacking bolt, mounting a hydraulic jack at the lower part of the jacking block, slowly jacking the thrust tile, and stopping jacking the thrust tile when the upper surface of the outer side of the thrust tile is 0.5-1.5 mm away from the mirror plate;
s1.6 track system assembly: the positioning rail is arranged below the left side of the thrust tile, the positioning step of the positioning rail is attached to the spring column, and the limiting rail is arranged below the right side of the thrust tile; the middle rail is placed at the rear part of the thrust tile, the position of the middle rail is adjusted to align the middle rail with the positioning rail, and a connecting bolt of the positioning rail and the middle rail is installed; adjusting the limit rail to align the limit rail with the middle rail, and installing a connecting bolt between the middle rail and the limit rail; adjusting the outer rail to align the outer rail with the middle rail, and fixing the outer rail on the thrust oil window;
s1.7, mounting a transfer trolley: mounting a left supporting wheel and a right supporting wheel on two sides of the tail part of the thrust tile, respectively inserting first bolts of a left fixed wheel frame and a right fixed wheel frame into pin holes on two sides of the thrust tile, aligning the first fixing holes with the bolt holes on the thrust tile, and fixing the mounting bolts;
s1.8, transferring the thrust tile to a designated position: removing a jack and a top tile bolt on a thrust tile, installing a lifting lug at the tail part of the thrust tile, pulling the thrust tile out to an external track, installing the lifting lug at the head part of the thrust tile, lifting the thrust tile by using a gantry crane, removing a transfer trolley on the thrust tile, and transferring the thrust tile to a designated position;
s1.9, dismantling the inner rail, the middle rail, the outer rail and the spring column;
s1.10, repeating 1-9, and removing all thrust tiles;
s2, mounting a thrust tile:
s2.1, assembling an inner rail, a middle rail and an outer rail, and assembling a rail system according to S1.6;
s2.2, upper track of thrust tile: lifting a thrust tile by using a gantry crane, cleaning the surface of the thrust tile, installing a thrust tile transfer trolley, lifting the thrust tile to the upper part of an external track, enabling rollers of a left fixed wheel frame, a right fixed wheel frame, a left supporting wheel and a right supporting wheel to fall into the track, removing lifting lugs at the head of the thrust tile, and smearing turbine oil on the surface of the thrust tile;
s2.3, mounting a thrust tile: pushing the thrust tile into the mounting position;
s2.4, dismantling a transfer trolley and a track system: installing a thrust tile jacking bolt and a jack, jacking the thrust tile, stopping jacking the thrust tile when the distance between the upper surface of the outer side of the thrust tile and the mirror surface is 0.5-1.5 mm, dismantling a track system and a transfer trolley, and dismantling the jack and the jacking bolt to finish installation of the thrust tile;
s2.5 repeating S2.1-S2.4, and installing all thrust tiles.
The invention has the following beneficial effects:
1. the thrust tile dismounting device is assembled by the parts, the whole tool is light in weight and convenient to transfer, and after the thrust tile is jacked up, the track system and the thrust tile transfer trolley are convenient to dismount. Through this dismouting device, can swiftly conveniently carry out the dismouting to the thrust tile safely, clean for the unit oil groove and create convenient environment, provide reliable guarantee for unit maintenance or installation.
2. Through independent location track and spacing track, when dismouting thrust tile, just can conveniently place the below of thrust tile to can carry out spacingly to the wheel of transporting the dolly, make the transportation dolly remove along the spacing groove.
3. The middle part of the outer track is provided with a plurality of hydraulic jacks for jacking the thrust tiles, the hydraulic jacks are arranged on the outer track seat and used for jacking the thrust tiles, so that the thrust tiles are convenient to jack, the thrust tiles are inspected or hoisted, and the disassembly and assembly transfer trolley can be convenient.
4. The left fixed wheel frame and the right fixed wheel frame which are independent can be conveniently connected and fixed with the thrust tile through the first bolt and the first fixing hole; independent left support wheel and right support wheel, through the second fixed orifices, can be convenient fixedly with thrust tile connection to make thrust tile can conveniently promote.
5. The jacking bolt is used for jacking the thrust tile, a hydraulic jack is arranged at the bottom of the jacking tile, and the tail part of the thrust tile is jacked by the hydraulic jack, so that the positioning rail and the limiting rail are convenient to position.
Drawings
Fig. 1 is a schematic view of the three-dimensional structure of the inner rail, the middle rail and the outer rail of the present invention.
Fig. 2 is a schematic perspective view of the internal track, the middle track, the external track and the transfer trolley according to the present invention.
Fig. 3 is a schematic perspective view of the thrust oil window according to the present invention when the thrust oil window is installed at both sides thereof.
Fig. 4 is a schematic view of the whole structure of the present invention in the use state.
Fig. 5 is a schematic view of the perspective view of the upper side of the positioning rail according to the present invention.
Fig. 6 is a schematic view of a perspective view of the bottom of the positioning rail according to the present invention.
Fig. 7 is a schematic view of a perspective view of the upper side of the limit rail according to the present invention.
Fig. 8 is a schematic view of a perspective view of the bottom of the limit rail according to the present invention.
Fig. 9 is a schematic perspective view of a middle rail according to the present invention.
Fig. 10 is a schematic perspective view of an external track according to the present invention.
Fig. 11 is a schematic perspective view of a left and right fixed wheel frame according to the present invention.
Fig. 12 is another perspective view of the left and right fixed wheel frames of the present invention.
Fig. 13 is a schematic perspective view of the left and right supporting wheels of the present invention.
Fig. 14 is a schematic perspective view of a top tile latch according to the present invention.
Fig. 15 is a schematic perspective view of the present invention when the thrust shoe is detached or attached.
In the figure: the positioning rail comprises a positioning rail 1, a first rail supporting plate 11, a limiting strip 12, a first connecting plate 13, a first connecting hole 14, a positioning step 15 and a first supporting body 16;
the limiting rail 2, the second rail supporting plate 21, the limiting groove 22, the second connecting plate 23, the second connecting hole 24 and the second supporting body 25;
the device comprises a middle rail 3, a middle rail seat 31, a first adjusting threaded hole 32, a middle positioning rail 33, a middle limiting rail 34, a third connecting plate 35 and a third connecting hole 36;
the outer rail 4, the outer rail seat 41, the second adjusting threaded hole 42, the outer positioning rail 43, the outer limiting rail 44, the hydraulic jack 45, the fourth connecting plate 46 and the fourth connecting hole 47; an extension 48;
the device comprises a left fixed wheel frame 5, a right fixed wheel frame 6, a supporting rod 51, a first bolt 52, a first roller 53 and a first fixed hole 54;
the left support wheel 7, the right support wheel 8, the support 71, the second fixing hole 72, the kidney hole 73 and the second roller 74;
a top tile latch 9, a top tile 91, and a second latch 92;
a thrust oil window 10 and a thrust shoe 20.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1-15, a spring strut thrust bearing thrust shoe dismounting device comprises an inner rail, a middle rail 3, an outer rail 4, and a transfer trolley for supporting a thrust shoe 20 to move on each rail; the inner rail comprises a positioning rail 1 on one side and a limiting rail 2 on the other side, wherein the positioning rail 1 and the limiting rail 2 are respectively connected with one end of a middle rail 3, and the other end of the middle rail 3 is in butt joint with an outer rail 4; the transfer trolley comprises a left fixed wheel frame 5, a right fixed wheel frame 6, a left supporting wheel 7 and a right supporting wheel 8, wherein in a use state, the left fixed wheel frame 5, the right fixed wheel frame 6, the left supporting wheel 7 and the right supporting wheel 8 are independently arranged on the side surface of a thrust tile 20; and a top shoe bolt 9 for jacking up the thrust shoe 20. Through the structure, the thrust tile can be quickly, conveniently and safely disassembled and assembled, a convenient environment is created for cleaning the oil groove of the unit, and reliable guarantee is provided for overhauling or installing the unit.
The positioning rail 1 is connected with the middle rail 3 through bolts, the limit rail 2 is connected with the middle rail 3 through bolts, the outer rail 4 is fixed on the thrust oil window 10 and is in butt joint with the middle rail 3, and the positioning rail 1, the limit rail 2, the middle rail 3 and the outer rail 4 form a rail system. The left fixed wheel frame 5, the right fixed wheel frame 6, the left supporting wheel 7 and the right supporting wheel 8 form a thrust tile transfer trolley. The jacking bolt 9 is used for jacking the thrust tile 20 on one side, and when the jack is used, one end of the jacking bolt 9 is inserted into the thrust tile 20, a jack is arranged at the bottom of the other end of the jacking bolt, and the thrust tile 20 is jacked up through the jack. The whole thrust tile dismounting device is connected by the parts, is convenient to transfer and is convenient to dismount on site.
Referring to fig. 5-6, the positioning rail 1 comprises a first rail supporting plate 11, wherein a limiting strip 12 is arranged on one side of the upper portion of the first rail supporting plate 11, and the limiting effect on the transfer trolley is achieved in the process of dismounting the thrust tile 20. One end of the first rail supporting plate 11 is vertically connected with a first connecting plate 13, a first connecting hole 14 is formed in the first connecting plate 13, and the positioning rail 1 is connected with the middle rail 3 through the first connecting plate 13 in a bolt mode. The bottom of the first track support plate 11 is provided with a positioning step 15 for positioning the track system against the spring post. The first support body 16 is used for supporting the first track supporting plate 11, so that the first track supporting plate 11 can bear the weight of the thrust tile 20.
Referring to fig. 7-8, the limiting rail 2 comprises a second rail supporting plate 21, and a limiting groove 22 is formed in the upper portion of the second rail supporting plate 21 along the length direction to limit the thrust tile transfer trolley. One end of the second track supporting plate 21 is vertically connected with a second connecting plate 23, a second connecting hole 24 is formed in the second connecting plate 23, and the limit track 2 is connected with the middle track 3 through the second connecting plate 23 through bolts. The bottom of the second rail supporting plate 21 is provided with a second supporting body 25 for supporting the second rail supporting plate 21.
Through independent location track 1 and spacing track 2, when dismouting thrust tile 20, just can conveniently place the below of thrust tile 20 to can carry out spacingly to the wheel of transportation dolly, make transportation dolly remove along spacing groove 22.
Referring to fig. 9, the middle rail 3 includes a plurality of middle rail seats 31, and middle positioning rails 33 and middle limit rails 34 installed at both ends of the middle rail seats 31. The middle track seat 31 is provided with first adjusting screw holes 32 for adjusting the level of the track on both sides of the middle positioning track 33 and the middle limiting track 34. One end of the middle positioning rail 33 and one end of the middle limiting rail 34 are respectively provided with a third connecting plate 35, the third connecting plate 35 is provided with a third connecting hole 36, and the middle rail 3 is respectively connected and fixed with the positioning rail 1 and the limiting rail 2 through the third connecting plate 35.
Referring to fig. 10, the outer rail 4 includes four outer rail seats 41, and an outer positioning rail 43 and an outer limit rail 44 mounted at both ends of the outer rail seats 41. The outer rail seat 41 is provided with second adjusting screw holes 42 for adjusting the rail level at both sides of the outer positioning rail 43 and the outer limiting rail 44. One end of the outer positioning rail 43 and one end of the outer limiting rail 44 are respectively provided with a fourth connecting plate 46, and a fourth connecting hole 47 is formed in the fourth connecting plate 46; an extension section 48 is respectively arranged at one end of the outer positioning track 43 and one end of the outer limiting track 44 close to the middle track 3; in use, the outer rail 4 is bolted to the thrust oil window 10 via the fourth connection plate 46, and the extension 48 extends through the thrust oil window 10 to interface with the central rail 3. Like the middle rail 3, the outer positioning rail 43 is provided with a limiting bar, and the outer limiting rail 44 is provided with a wheel groove for limiting the thrust tile transfer trolley.
Further, referring to fig. 10, four hydraulic jacks 45 for lifting the thrust shoes 20 are installed at the middle of the outer rail 4, and the hydraulic jacks 45 are installed on the outer rail seat 41. The device is used for jacking the thrust tile 20, and can stably and safely inspect and process the thrust tile 20 after jacking the thrust tile 20, and can be conveniently lifted, disassembled and transported.
Referring to fig. 11 and 12, the left fixed wheel frame 5 and the right fixed wheel frame 6 are of symmetrical structure. The left fixed wheel carrier 5 comprises a supporting rod 51, one end of the supporting rod 51 is provided with a first bolt 52, the first bolt 52 extends out of the side surface of the supporting rod 51, and the first bolt 52 is used for being inserted into the thrust tile 20 to bear the weight of the thrust tile. The lower end of the first bolt 52 is provided with a first roller 53, and the other end of the supporting rod 51 is provided with a first fixing hole 54 on the side surface of the first bolt 52, which extends out, for installing the left fixed wheel frame 5 or the right fixed wheel frame 6 on the thrust tile. Specifically, the support rod 51 is made of angle steel. The independent left fixed wheel frame 5 and the independent right fixed wheel frame 6 can be conveniently connected and fixed with the thrust tile 20 through the first bolt 52 and the first fixing hole 54.
Referring to fig. 13, the left support wheel 7 and the right support wheel 8 are of symmetrical structure. The left support wheel 7 comprises an L-shaped support 71, a second fixing hole 72 is formed in one side of the support 71, a waist round hole 73 is formed in the other side of the support 71, an adjusting bolt is arranged at the upper end of a second roller 74, and the adjusting bolt penetrates through the waist round hole 73 and is fixedly connected with the support 71 through a nut. The support 71 is connected with the thrust tile through a second fixing hole 72 by bolts, and a second roller 74 is stably guided to move on the roller way through the adjustment position of the waist round hole 73. The independent left support wheel 7 and the independent right support wheel 8 can be conveniently connected and fixed with the thrust tile 20 through the second fixing holes 72.
Referring to fig. 14, the top shoe latch 9 includes a top shoe 91, and a second latch 92 is provided at one side of the top shoe 91 for being inserted into a pin hole at the front end of the thrust shoe 20. The jacking bolt 9 is used for jacking the thrust tile 20, a hydraulic jack is arranged at the bottom of the jacking tile 91, and the tail of the thrust tile 20 is jacked by the hydraulic jack.
Embodiment two:
referring to fig. 15, a method for assembling and disassembling a thrust shoe using a spring strut type thrust bearing thrust shoe assembling and disassembling device comprises the steps of disassembling and assembling:
s1, removing the thrust tile:
s1.1 top rotor preparation: the air brake is withdrawn, a dial indicator is erected to monitor the jacking quantity of the thrust head, the rotor brake ring and the water turbine shaft, a top rotor oil pump pipeline is connected, and a top rotor oil pump is started, so that the pressure of the top rotor oil pump reaches 2/3 of the rated pressure of the top rotor, and the pressure is maintained for 10 minutes without leakage and then is released;
s1.2 top rotor: starting a high-pressure oil load reduction system, starting a rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1-2 mm; when the lifting amount of the water turbine shaft reaches 18-20 mm, closing a top rotor oil pump, putting into a brake for locking, and completing the top rotor operation;
s1.3, oil discharge: connecting oil discharge equipment of the oil groove, starting the oil discharge pump, discharging turbine oil in the oil groove, closely watching the oil level of the oil groove to drop in the oil discharge process, and closing the oil discharge pump when the indication number of the oil level gauge is 0;
s1.4, preparation work for dismounting the thrust tile: removing side windows of the thrust oil groove, removing parts influencing the extraction of the thrust shoe, such as a high-pressure oil relief system branch pipe, a thrust shoe cooling oil branch pipe, a thrust shoe circumferential limiting device and the like, and cleaning the thrust oil groove until sundries such as turbine oil, slag and the like are not generated in a personnel operation area;
s1.5, jacking a thrust tile: a top tile bolt 9 is installed, a hydraulic jack is installed at the lower part of a top tile block 91, a thrust tile 20 is slowly jacked, and when the upper surface of the outer side of the thrust tile 20 is 0.5-1.5 mm away from the mirror plate, the jacking of the thrust tile 20 is stopped;
s1.6 track system assembly: the positioning rail 1 is arranged below the left side of the thrust tile 20, the positioning step 15 of the positioning rail 1 is attached to the spring column, and the limiting rail 2 is arranged below the right side of the thrust tile 20; the middle rail 3 is placed at the rear part of the thrust tile 20, the position of the middle rail 3 is adjusted to align the middle rail 3 with the positioning rail 1, and a connecting bolt of the positioning rail 1 and the middle rail 3 is installed; adjusting the limit rail 2 to align the limit rail 2 with the middle rail 3, and installing a connecting bolt between the middle rail 3 and the limit rail 2; adjusting the outer rail 4 to align the outer rail 4 with the middle rail 3, and fixing the outer rail 4 on the thrust oil window 10;
s1.7, mounting a transfer trolley: the left support wheel 7 and the right support wheel 8 are arranged on two sides of the tail part of the thrust tile 20, the first bolts 52 of the left fixed wheel frame 5 and the right fixed wheel frame 6 are respectively inserted into the pin holes on two sides of the thrust tile 20, the first fixing holes 54 are aligned with the bolt holes on the thrust tile, and the mounting bolts are fixed;
s1.8, transferring the thrust tile to a designated position: removing a jack and a top tile bolt 9 on a thrust tile 20, installing 2 lifting lugs at the tail part of the thrust tile, pulling out the thrust tile 20 to an external track 4, installing 1 lifting lug at the head part of the thrust tile 20, lifting the thrust tile 20 by using a gantry crane, removing a transfer trolley on the thrust tile 20, and transferring the thrust tile 20 to a designated position;
s1.9, dismantling the inner rail, the middle rail 3, the outer rail 4 and the spring column;
s1.10 repeating 1-9, and removing all thrust tiles.
S2, mounting a thrust tile:
s2.1, assembling an inner rail, a middle rail 3 and an outer rail 4, and assembling a rail system according to the step S1.6;
s2.2, upper track of thrust tile: lifting the thrust tile 20 by using a gantry crane, cleaning the surface of the thrust tile 20, installing a thrust tile transfer trolley, lifting the thrust tile 20 to the upper part of an external track 4, enabling the rollers of a left fixed wheel frame 5, a right fixed wheel frame 6, a left supporting wheel 7 and a right supporting wheel 8 to fall into the track, removing a lifting lug at the head of the thrust tile 20, and smearing turbine oil on the surface of the thrust tile;
s2.3, mounting a thrust tile: pushing the thrust tile into the mounting position;
s2.4, dismantling a transfer trolley and a track system: installing a thrust tile jacking bolt 9 and a jack, jacking the thrust tile 20, stopping jacking the thrust tile 20 when the distance between the upper surface of the outer side of the thrust tile 20 and the mirror surface is 0.5-1.5 mm, dismantling a track system and a transfer trolley, and dismantling the jack and the jacking bolt 9 to finish installation of the thrust tile;
s2.5 repeating S2.1-S2.4, and installing all thrust tiles.
The working principle of the invention is as follows: when the thrust tile transfer trolley is placed on the track, a gap of 5-7 mm exists between the thrust tile 20 and the spring column, a gap of 3-4 mm exists between the thrust tile 20 and the track, and the thrust tile can be pushed freely on the thrust tile transfer trolley. After the rotor is jacked, about 17mm exists between the thrust tile 20 and the mirror plate, and after the jack is used for jacking the thrust tile through the jack plug 9, the positioning track 1 and the limiting track 2 can be easily installed.
Claims (6)
1. A spring strut type thrust bearing thrust tile dismouting device, its characterized in that: comprises an inner rail, a middle rail (3), an outer rail (4) and a transfer trolley for supporting a thrust tile (20) to move on each rail; the inner rail comprises a positioning rail (1) on one side and a limiting rail (2) on the other side, wherein the positioning rail (1) and the limiting rail (2) are respectively connected with one end of the middle rail (3), and the other end of the middle rail (3) is in butt joint with the outer rail (4); the transfer trolley comprises a left fixed wheel frame (5), a right fixed wheel frame (6), a left supporting wheel (7) and a right supporting wheel (8), wherein in a use state, the left fixed wheel frame (5), the right fixed wheel frame (6), the left supporting wheel (7) and the right supporting wheel (8) are independently arranged on the side face of a thrust tile (20); the device also comprises a jacking bolt (9) for jacking the thrust tile (20);
the positioning rail (1) comprises a first rail supporting plate (11), one side of the upper part of the first rail supporting plate (11) is provided with a limiting strip (12), one end of the first rail supporting plate (11) is vertically connected with a first connecting plate (13), the first connecting plate (13) is provided with a first connecting hole (14), and the positioning rail (1) is connected with the middle rail (3) through the first connecting plate (13); the bottom of the first track supporting plate (11) is provided with a positioning step (15) and a first supporting body (16) for supporting the first track supporting plate (11);
the limiting rail (2) comprises a second rail supporting plate (21), a limiting groove (22) is formed in the upper portion of the second rail supporting plate (21) along the length direction, one end of the second rail supporting plate (21) is vertically connected with a second connecting plate (23), a second connecting hole (24) is formed in the second connecting plate (23), and the limiting rail (2) is connected with the middle rail (3) through the second connecting plate (23); the bottom of the second track supporting plate (21) is provided with a second supporting body (25) for supporting the second track supporting plate (21);
the middle rail (3) comprises a plurality of middle rail seats (31), and middle positioning rails (33) and middle limiting rails (34) which are arranged at two ends of the middle rail seats (31); the middle track seat (31) is positioned on two sides of the middle positioning track (33) and the middle limiting track (34) and is provided with first adjusting threaded holes (32); one end of the middle positioning rail (33) and one end of the middle limiting rail (34) are respectively provided with a third connecting plate (35), a third connecting hole (36) is formed in the third connecting plate (35), and the middle rail (3) is respectively connected and fixed with the positioning rail (1) and the limiting rail (2) through the third connecting plate (35);
the outer rail (4) comprises a plurality of outer rail seats (41), and outer positioning rails (43) and outer limit rails (44) which are arranged at two ends of the outer rail seats (41); the outer track seat (41) is positioned at two sides of the outer positioning track (43) and the outer limiting track (44) and is provided with second adjusting threaded holes (42); one end of the external positioning rail (43) and one end of the external limiting rail (44) are respectively provided with a fourth connecting plate (46), and a fourth connecting hole (47) is formed in the fourth connecting plate (46); an extension section (48) is respectively arranged at one end, close to the middle rail (3), of the outer positioning rail (43) and the outer limiting rail (44); in a use state, the outer rail (4) is connected with the thrust oil window (10) through the fourth connecting plate (46), and the extension section (48) stretches through the thrust oil window (10) to be in butt joint with the middle rail (3).
2. The spring strut type thrust bearing thrust shoe removal and installation apparatus of claim 1, wherein: the middle part of the outer track (4) is provided with a plurality of hydraulic jacks (45) for jacking the thrust tiles (20), and the hydraulic jacks (45) are arranged on the outer track seat (41).
3. The spring strut type thrust bearing thrust shoe removal and installation apparatus of claim 2, wherein: the left fixed wheel frame (5) and the right fixed wheel frame (6) are of symmetrical structures; the left fixed wheel frame (5) comprises a supporting rod (51), one end of the supporting rod (51) is provided with a first bolt (52), the first bolt (52) extends out of the side face of the supporting rod (51), the lower end of the first bolt (52) is provided with a first roller (53), and the other end of the supporting rod (51) is provided with a first fixing hole (54) located on the extending side face of the first bolt (52).
4. A spring strut type thrust bearing thrust shoe removal and attachment apparatus as defined in claim 3, wherein: the left supporting wheel (7) and the right supporting wheel (8) are of symmetrical structures; the left support wheel (7) comprises an L-shaped support (71), a second fixing hole (72) is formed in one side of the support (71), a waist round hole (73) is formed in the other side of the support (71), an adjusting bolt is arranged at the upper end of the second roller (74), and the adjusting bolt penetrates through the waist round hole (73) to be connected and fixed with a nut of the support (71).
5. The spring strut type thrust bearing thrust shoe removal and attachment apparatus of claim 4, wherein: the top tile bolt (9) comprises a top tile (91), and a second bolt (92) is arranged on one side of the top tile (91).
6. A method of assembling and disassembling a thrust shoe using a spring strut type thrust bearing thrust shoe assembly and disassembly apparatus as set forth in claim 5, comprising the steps of:
s1, dismounting a thrust tile:
s1.1 top rotor preparation: the air brake is withdrawn, a dial indicator is erected to monitor the jacking quantity of the thrust head, the rotor brake ring and the water turbine shaft, a top rotor oil pump pipeline is connected, and a top rotor oil pump is started, so that the pressure of the top rotor oil pump reaches 2/3 of the rated pressure of the top rotor, and the pressure is maintained for 10 minutes without leakage and then is released;
s1.2 top rotor: starting a high-pressure oil load reduction system, starting a rotor oil pump, monitoring the jacking amount of a rotating part, and closing the high-pressure oil load reduction system when the jacking amount of a thrust head reaches 1-2 mm; when the lifting amount of the water turbine shaft reaches 18-20 mm, closing a top rotor oil pump, and putting into a brake for locking;
s1.3, oil discharge: connecting oil discharge equipment of a deduction oil groove, starting an oil discharge pump, and discharging turbine oil in the oil groove;
s1.4, preparation work for dismounting the thrust tile: dismantling a side window of the thrust oil groove, dismantling a branch pipe of the high-pressure oil relief system, a branch pipe of the thrust shoe cooling oil, a circumferential limit device of the thrust shoe, and cleaning the thrust oil groove;
s1.5, jacking a thrust tile: a top tile bolt (9) is installed, a hydraulic jack is installed at the lower part of a top tile block (91), a thrust tile (20) is slowly jacked, and when the upper surface of the outer side of the thrust tile (20) is 0.5-1.5 mm away from the mirror plate, the jacking of the thrust tile (20) is stopped;
s1.6 track system assembly: the positioning rail (1) is arranged below the left side of the thrust tile (20), the positioning step (15) of the positioning rail (1) is attached to the spring column, and the limiting rail (2) is arranged below the right side of the thrust tile (20); the middle rail (3) is placed on the outer side of the thrust tile (20), the position of the middle rail (3) is adjusted to enable the middle rail (3) to be aligned with the positioning rail (1), and a connecting bolt of the positioning rail (1) and the middle rail (3) is installed; adjusting the limit rail (2) to align the limit rail (2) with the middle rail (3), and installing a connecting bolt of the middle rail (3) and the limit rail (2); adjusting the outer rail (4) to align the outer rail (4) with the middle rail (3), and fixing the outer rail (4) on the thrust oil window (10);
s1.7, mounting a transfer trolley: a left supporting wheel (7) and a right supporting wheel (8) are arranged on two sides of the tail part of the thrust tile (20), first bolts (52) of a left fixed wheel frame (5) and a right fixed wheel frame (6) are respectively inserted into pin holes on two sides of the thrust tile (20), first fixing holes (54) are aligned with the bolt holes on the thrust tile, and mounting bolts are used for fixing;
s1.8, transferring the thrust tile to a designated position: removing a top tile bolt (9) on a jack and a thrust tile (20), installing a lifting lug at the tail part of the thrust tile, pulling the thrust tile (20) out to an external track (4), installing the lifting lug at the head part of the thrust tile (20), lifting the thrust tile (20) by using a portal crane, removing a transfer trolley on the thrust tile (20), and transferring the thrust tile (20) to a designated position;
s1.9, dismantling the inner rail, the middle rail (3), the outer rail (4) and the spring column;
s1.10, repeating the steps S1-S9, and removing all thrust tiles;
s2, mounting a thrust tile:
s2.1, assembling the inner rail, the middle rail (3) and the outer rail (4) into a rail system according to S1.6;
s2.2, upper track of thrust tile: lifting a thrust tile (20) by using a gantry crane, cleaning the surface of the thrust tile (20), installing a thrust tile transfer trolley, lifting the thrust tile (20) to the upper part of an external track (4), enabling rollers of a left fixed wheel frame (5), a right fixed wheel frame (6) and a left supporting wheel (7) and a right supporting wheel (8) to fall into the track, removing a head lifting lug of the thrust tile (20), and smearing turbine oil on the surface of the thrust tile;
s2.3, mounting a thrust tile: pushing the thrust tile into the mounting position;
s2.4, dismantling a transfer trolley and a track system: installing a thrust tile jacking bolt (9) and a jack, jacking the thrust tile (20), stopping jacking the thrust tile (20) when the distance between the upper surface of the outer side of the thrust tile (20) and the mirror surface is 0.5-1.5 mm, dismantling a track system and a transfer trolley, and dismantling the jack and the jacking bolt (9) to finish installation of the thrust tile;
s2.5 repeating S2.1-S2.4, and installing all thrust tiles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211079680.1A CN115488819B (en) | 2022-09-05 | 2022-09-05 | Device and method for dismounting thrust bush of spring strut type thrust bearing |
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| CN202211079680.1A CN115488819B (en) | 2022-09-05 | 2022-09-05 | Device and method for dismounting thrust bush of spring strut type thrust bearing |
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