CN117755973B - Auxiliary lifting device for installation of steam turbine - Google Patents
Auxiliary lifting device for installation of steam turbine Download PDFInfo
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- CN117755973B CN117755973B CN202410192776.1A CN202410192776A CN117755973B CN 117755973 B CN117755973 B CN 117755973B CN 202410192776 A CN202410192776 A CN 202410192776A CN 117755973 B CN117755973 B CN 117755973B
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- 230000005540 biological transmission Effects 0.000 claims description 17
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- 230000001174 ascending effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
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Abstract
The invention discloses an auxiliary lifting device for installing a steam turbine, which belongs to the technical field of installation of steam turbines and comprises a guide rail and a portal frame, wherein a lifting group is arranged on the portal frame, the portal frame is arranged above the guide rail and can slide along the guide rail, a shell is arranged below the portal frame, and a plurality of mounting grooves are formed in the shell.
Description
Technical Field
The invention relates to the technical field of turbine installation, in particular to an auxiliary lifting device for turbine installation.
Background
The steam turbine is also called a steam turbine engine, and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and simultaneously does work outwards;
In the installation process of the steam turbine, the rotor is precisely installed in the matched shell, however, because the blades on the rotor are precisely and tightly aligned with the installation stations/installation grooves on the shell (the installation stations/installation grooves can be precisely inserted horizontally), and meanwhile, the shell lacks an installation space for an installation tool, the traditional installation mode basically only lifts the rotor above the shell, then the position of the lifted rotor is frequently adjusted by a skilled technician to align the blades on the rotor with the installation grooves, and the complete steam turbine is composed of a plurality of rotors and the matched shells, the plurality of shells are assembled in an end-to-end manner, the diameters of shafts at two ends of the smaller rotor are different, the front end and the rear end of the rotor are inclined up and down after the rotor is lifted, the difficulty in installation is increased, the rotor cannot be directly placed in the shell, firstly, the rotor is inconvenient to align, secondly, the rotor is easy to collide, the skilled technician is required to frequently command the position of the rotor, the rotor is required to be frequently aligned with the installation grooves, and the shaft is difficult to collide with the rotor, and the shaft is difficult to be lifted, the shaft is convenient to adjust the shaft to collide with the rotor, and the shaft is difficult to be inclined and the shaft is convenient to shake the shaft to be inclined, and the shaft is difficult to be deformed, and the shaft is required to be deformed, and the shaft is heavy to be convenient to shake the shaft is caused to the hand to be in the time of the fault and the hand is caused to be.
Disclosure of Invention
The invention aims to provide an auxiliary lifting device for installing a steam turbine, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an auxiliary lifting device for steam turbine installation, includes guide rail and portal frame, be provided with on the portal frame and hang and put the group, the portal frame is arranged in the top of guide rail and can slide along the guide rail, the portal frame below is provided with the casing, a plurality of mounting groove has been seted up to the inside of casing, the portal frame below is provided with the crossbeam, both sides wall all fixedly connected with gag lever post about the crossbeam, two the gag lever post respectively with the left and right sides wall of portal frame in vertical direction sliding connection, hang and put the group and be used for hanging the crossbeam, be provided with two drive blocks on the crossbeam, two all be provided with on the drive block and be used for carrying out the adjustment group of making level to the rotor front and back end, the drive block is arranged about the crossbeam symmetry, two drive block one side all is provided with the drive group, the drive group is used for driving two drive blocks and slides along the crossbeam;
The utility model provides a control group, including connecting block, a first rack bar, two second rack bars, two pick-up plates and two transmission groups, connecting block fixed connection is in the drive block bottom, be provided with the nylon belt on the connecting block, the nylon belt is with wrapping up the tip of rotor and driving the rotor and go up and down, nylon belt one side is provided with tightens the group, it is used for controlling the distance that the nylon belt release was contracted downwards to tighten the group, first rack bar and connecting block inside wall sliding connection in vertical direction, two second rack bars symmetrical arrangement respectively in the left and right sides of first rack bar, two equal sliding connection of second rack bar is in the bottom of connecting block, two equal fixedly connected with first spring between second rack bar and the connecting block inner wall, two the pick-up plate sets up two respectively the second rack bar is close to the position of first rack bar tip, and can drive the second rack bar and remove when the board removes, when the pick-up plate lateral shifting, drive first rack bar rises along vertical slip through the transmission group.
As a further scheme of the invention, the transmission group comprises two first gears and two second gears, the two first gears and the two second gears are respectively positioned behind the two detection plates, the two first gears are respectively positioned below the two second rack bars and can be meshed with the second rack bars, the two second gears are respectively positioned at two sides of the first rack bars and can be meshed with the first rack bars, the first gears and the second gears are both rotationally connected with the side wall of the connecting block, and a first chain is respectively connected between the two first gears and the two second gears in a transmission way.
As a further scheme of the invention, the side wall of the first rack bar is provided with a fixed bar, the upper side wall of the fixed bar is rotationally connected with two rollers, and the two rollers are symmetrically arranged about the two first rack bars and the fixed bar.
As a further scheme of the invention, the tightening group comprises two first carrier rollers, two second carrier rollers and a sensor, wherein the two first carrier rollers and the two second carrier rollers are respectively positioned at the left side and the right side of the connecting block, the nylon belt is annular, the upper part of the nylon belt is in transmission connection with the two first carrier rollers, the two first carrier rollers are respectively connected with a supporting piece in a rotating manner, the two supporting pieces are respectively in sliding connection with the connecting block, a first cylinder is respectively and fixedly connected between the two supporting pieces and the connecting block, the second carrier rollers are respectively and rotatably connected with the connecting block and are respectively contacted with the nylon belt, the fixed rod is in sliding connection with the first rack rod, and the sensor is positioned at the top end of the fixed rod.
As a further scheme of the invention, the detection plates are composed of fixed plates and movable plates, the fixed plates are fixedly connected to the side wall of the second rack bar, the movable plates are rotatably connected below the fixed plates, and the bottom ends of the movable plates are inclined outwards;
The lower parts of the two limiting rods are respectively provided with a yielding group, and the two yielding groups are respectively used for controlling the two movable plates positioned on the left side and the two movable plates positioned on the right side to keep a vertical state and a yielding state.
As a further scheme of the invention, the abdication group comprises a third gear, a fourth gear and a third rack bar, wherein the third rack bar is fixedly connected to the side wall of the portal frame, the third gear is meshed with the third rack bar, the third gear is rotationally connected to the inner wall of the limiting bar, the fourth gear is rotationally connected to one side, far away from the third gear, of the inner wall of the limiting bar, a second chain is connected between the third gear and the fourth gear in a transmission manner, the fourth gear is meshed with the fourth rack bar, the fourth rack bar is slidingly connected to the side wall of the cross beam, a second spring is fixedly connected between the fourth rack bar and the cross beam, the fourth rack bar is fixedly connected with a round bar, two pressing plates are slidingly connected to the side walls of the two connecting blocks respectively, the bottoms of the two pressing plates are slidingly connected with fifth rack bars in the horizontal direction respectively, the fifth rack bars are slidingly connected with the two fixing plates respectively, the two fifth gear bars are meshed with the fifth gear bars respectively, and the fifth gear bars are fixedly connected with the rotating shafts of the fifth gear plates respectively.
As a further scheme of the invention, the driving group comprises a motor, the motor is fixedly connected with the cross beam, an output shaft of the motor is fixedly connected with a worm, and the worm is in threaded connection with the driving block.
As a further scheme of the invention, the driving group comprises a second air cylinder which is fixedly connected between the driving block and the cross beam.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, after the rotor is lifted, the heights of the two first rack bars and the roller wheels can be automatically adjusted according to the diameters of the two ends of the rotor through the adjusting group, so that the two ends of the rotor can be resisted by the roller wheels at the same time, further, the two ends with different diameters of the rotor can be in a horizontal state, the horizontal positioning of the two ends of the rotor can be rapidly completed, the blades on the rotor can be rapidly aligned with the mounting grooves during lifting, the mounting work can be rapidly completed, the two first rack bars are positioned above the rotor when the rotor is positioned, and the two first rack bars can not touch the housing when the rotor is placed in the housing, so that the mounting is convenient.
The rotor of equidimension not can be supported through the setting of nylon belt, has increased adaptability, can also provide certain interval and buffering in both contacts through the nylon belt when the rotor is placed the casing, also conveniently take out, can not produce hard contact simultaneously and cause wearing and tearing, and the minimum degree needs artifical the participation in whole working process, reduces labor intensity and improves work efficiency.
In the process that the rotor descends to the inside of the shell, through the arrangement of the third gear, the fourth gear, the third rack bar and the fourth rack bar, the movable plate can rotate to one side from a vertical state, and then the movable plate is prevented from touching the shell when the rotor contacts with the shell.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the positional relationship among the connecting block, the driving block and the driving set according to the present invention;
FIG. 3 is a schematic view of the positional relationship between the driving set, the pressing plate and the detecting plate according to the present invention;
FIG. 4 is a schematic view showing the positional relationship between the first rack bar, the second rack bar and the fixing piece according to the present invention;
FIG. 5 is a schematic view showing the positional relationship of the pressure plate, the fifth rack bar and the detection plate of the present invention;
FIG. 6 is a schematic view of the structure of the tightening unit of the present invention;
FIG. 7 is a schematic view showing the positional relationship of the first rack bar to the fixed bar and the roller in accordance with the present invention;
FIG. 8 is a schematic view of the positional relationship between the driving set and the cross beam according to the present invention;
fig. 9 is a schematic diagram showing the positional relationship of the third gear, the fourth rack bar, the fourth gear and the fourth rack bar according to the present invention;
FIG. 10 is a schematic view of the positional relationship of the second cylinder with the cross beam and the drive block of the present invention;
FIG. 11 is a schematic illustration of the roller of the present invention positioning rotors of different sizes.
In the drawings, the list of components represented by the various numbers is as follows:
1. A guide rail; 2. a portal frame; 3. a housing; 4. a mounting groove; 5. a cross beam; 6. a driving block; 7. a limit rod; 8. a connecting block; 9. a nylon belt; 10. a first rack bar; 11. a second rack bar; 12. a first spring; 13. a detection plate; 14. a first gear; 15. a second gear; 16. a first chain; 17. a fixed rod; 18. a roller; 19. a first idler; 20. a second idler; 21. a support; 22. a first cylinder; 23. a sensor; 24. a fixing piece; 25. a movable plate; 26. a third gear; 27. a fourth gear; 28. a third rack bar; 29. a second chain; 30. a fourth rack bar; 31. a second spring; 32. a round bar; 33. a pressing plate; 34. a fifth rack bar; 35. a fifth gear; 36. a motor; 37. a worm; 38. and a second cylinder.
Detailed Description
Preferred embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the present invention. The embodiments of the present invention can be modified into various forms, and the scope of the present invention is not limited to the embodiments described in detail below. The present embodiments are provided to more fully explain the present invention to those skilled in the art to which the present invention pertains. Accordingly, the shapes of elements and the like in the drawings may be exaggerated for further emphasis on the clear description. Like parts are given like reference numerals throughout the various figures. Detailed descriptions of known functions and configurations that are determined to be likely to obscure the gist of the present invention will be omitted.
Referring to fig. 1-11, the present invention provides a technical solution: the utility model provides an auxiliary lifting device for steam turbine installation, includes guide rail 1 and portal frame 2, be provided with on the portal frame 2 and hang and put the group, portal frame 2 sets up in the top of guide rail 1 and can slide along guide rail 1, portal frame 2 below is provided with casing 3, a plurality of mounting groove 4 has been seted up to casing 3 inside, portal frame 2 below is provided with crossbeam 5, crossbeam 5 both sides wall all fixedly connected with gag lever post 7 about, two gag lever posts 7 respectively with the left and right sides wall of portal frame 2 in vertical direction sliding connection, hang and put the group and be used for hanging and put crossbeam 5, be provided with two drive blocks 6 on crossbeam 5, two all be provided with on the drive block 6 and be used for carrying out the adjustment group of making level to the rotor front and back end, drive block 6 is arranged about crossbeam 5 symmetry, two drive block 6 one side all is provided with drive group, drive group is used for driving two drive block 6 slides along crossbeam 5;
The utility model provides an adjusting group includes connecting block 8, a first rack bar 10, two second rack bars 11, two pick-up plates 13 and two transmission groups, connecting block 8 fixed connection is in drive piece 6 bottom, be provided with nylon belt 9 on the connecting block 8, nylon belt 9 wraps up and drives the rotor with the tip to the rotor and goes up and down, nylon belt 9 one side is provided with tightens the group, tightening group is used for controlling the distance that nylon belt 9 released the shrink downwards, first rack bar 10 and connecting block 8 inside wall are in vertical direction sliding connection, two second rack bars 11 are symmetrical respectively to be arranged in the left and right sides of first rack bar 10, two equal sliding connection of second rack bars 11 is in the bottom of connecting block 8, two equal fixedly connected with first spring 12 between second rack bars 11 and the connecting block 8 inner wall, two pick-up plates 13 set up respectively in two when second rack bars 11 are close to the position of first rack bar 10 tip, and can drive second rack bars 11 and remove when pick-up plates 13 remove, and pass through the horizontal transmission of first rack bar 10 and lift up plates along the vertical transmission of connecting block 8.
As a further scheme of the invention, the transmission set comprises two first gears 14 and two second gears 15, the two first gears 14 and the two second gears 15 are respectively positioned behind the two detection plates 13, the two first gears 14 are respectively positioned below the two second rack bars 11 and can be meshed with the second rack bars 11, the two second gears 15 are respectively positioned at two sides of the first rack bars 10 and can be meshed with the first rack bars 10, the first gears 14 and the second gears 15 are respectively connected with the side wall of the connecting block 8 in a rotating way, and a first chain 16 is respectively connected between the two first gears 14 and the two second gears 15 in a transmission way.
As shown in fig. 1-8;
initial work:
Before the shell 3 is placed, a substrate should be arranged, so that the shell 3 is placed in the substrate, and the number of the shells 3 is generally multiple, each shell 3 is attached end to end, and each shell 3 is internally provided with a corresponding rotor;
hoisting:
The rotor is placed on the ground in the lifting process and is positioned in front of or behind the shell 3, then the portal frame 2 slides to the upper side of the rotor along the guide rail 1, then the lifting group lowers the cross beam 5 (the lifting group is any one of the prior art, only the lifting of the cross beam 5 is needed), the cross beam 5 can be prevented from rotating through the limiting rod 7, two driving blocks 6 are required to move along the cross beam 5 by a corresponding distance according to the length of the rotor through the driving group so as to meet the lifting of the two ends of the rotor, the driving blocks 6 can drive the connecting blocks 8 and the adjusting group to move when moving, the lowering of the cross beam 5 can be stopped when the nylon belt 9 descends to the position capable of lifting the two ends of the rotor, and then the nylon belt 9 is placed below the two ends of the rotor;
preparation work before hanging:
Then the lifting beam 5 of the lifting group is lifted to the highest position and then stopped, the tightening group is started, the tightening group drives the nylon belt 9 to fold, at the moment, the nylon belt 9 positioned at the front and the rear drives the rotor to ascend, along with the ascending of the rotor, the front and the rear ends of the rotor are contacted with the two detection plates 13 at the left side and the right side of the rotor, the distance between the two detection plates 13 is very close when the two detection plates are not contacted with the rotor any more, the rotor after the rotor contacts with the rotor pushes the two detection plates 13 to drive the second rack bar 11 to move along the direction of the two sides of the rotor along the connecting block 8, at the moment, the first spring 12 is compressed, the distance between the two detection plates 13 is the diameter distance between the two detection plates 13 when the tightening group is completed, and the two detection plates 13 are contacted with the two ends of the rotor, and the diameter of the rack bar 10 is the same when the two rack bar 10 is contacted with the two ends of the rotor when the two rack bars 10 are contacted with the two ends of the rotor, and the two rack bars 10 are in the same when the two rack bar 10 is contacted with the two ends of the rotor, and the two rack bars 10 are in the same;
However, the diameters of the two ends of the rotor are different, so when the two first rack bars 10 are positioned at the same horizontal height, the end with the larger diameter of the rotor is contacted with the first rack bars 10, then the end is blocked by the first rack bars 10 and cannot be lifted continuously, while the end with the smaller diameter is lifted continuously because of not being contacted with the first rack bars 10, then the two ends of the rotor are inclined until the nylon belt 9 is folded, and the two ends of the rotor cannot be aligned with the mounting groove 4 when being lifted;
Adjusting leveling work: when the two detection plates 13 drive the second rack bar 11 to move a certain distance, the first rack bar 10 is driven to ascend along the connecting block 8 through the transmission group, the initial height of the first rack bar 10 is changed, so when the rotor pushes the detection plates 13 to move, the second rack bar 11 is meshed with the first gear 14 and drives the second gear 15 to rotate through the first chain 16, when the second gear 15 rotates, the second gear is meshed with the first rack bar 10 and drives the first rack bar 10 to ascend a certain distance along the connecting block 8, the height of the first rack bar 10 is changed, and the higher the ascending height of the first rack bar 10 is, the longer the distance between the detection plates 13 and the second rack bar 11 is;
Therefore, when the nylon belt 9 is folded by the tightening group, the nylon belt 9 drives the rotor to rise, one end with larger diameter of the rotor pushes the two detection plates 13 to move with the second rack bar for a longer distance, then the first rack bar 10 rises for a certain distance, so that one end with larger diameter of the rotor cannot be contacted with the first rack bar 10 above the rotor first, the distance that the smaller diameter of the rotor pushes the detection plates 13 to move is shorter, then the rising distance of the first rack bar 10 above the rotor is small, and when the tightening group is completed, the nylon belt 9 drives the rotor to rise to a limit position, and the heights of the first rack bars 10 above two ends of the rotor are changed, and then the rotor is contacted with two ends of the rotor at the same time, so that the rotor can be in a horizontal state under the resistance of the two first rack bars 10, and the leveling work is completed;
And (3) hanging and releasing work: after finishing leveling, the rotor is in a horizontal state and can be well aligned with a plurality of mounting grooves 4 above the shell 3, so that the mounting work can be quickly finished, when all blades on the rotor enter the inside of the mounting grooves 4, the two ends of the rotor are positioned above the shell 3, and the nylon belt 9 is positioned below the rotor, so that the nylon belt 9 is directly pulled out, and the mounting work is finished;
According to the invention, after the rotor is lifted, the heights of the two first rack bars 10 can be automatically adjusted according to the diameters of the two ends of the rotor through the adjusting group, so that the two ends of the rotor can be resisted by the first rack bars 10 at the same time, the two ends with different diameters of the rotor can be in a horizontal state, the horizontal positioning of the two ends of the rotor can be rapidly completed, the blades on the rotor can be rapidly aligned with the mounting groove 4 during lifting, the mounting work can be rapidly completed, the two first rack bars 10 are positioned above the rotor when the rotor is positioned, and can not touch the housing 3 when the rotor is placed in the housing 3, so that the mounting is convenient;
The rotor of equidimension not can be supported through the setting of nylon belt 9, has increased the adaptability, can also provide certain interval and buffering in both contact through nylon belt 9 when the rotor is placed casing 3, also conveniently take out, can not produce hard contact simultaneously and cause wearing and tearing, and minimum degree needs artifical the participation in whole working process, reduces intensity of labour improvement work efficiency.
As a further scheme of the invention, the side wall of the first rack bar 10 is provided with a fixed bar 17, two rollers 18 are rotatably connected to the upper side wall of the fixed bar 17, and the two rollers 18 are symmetrically arranged about the two first rack bars 10 and the fixed bar 17.
As shown in fig. 2 to 4 and fig. 7 and 11, by the arrangement of the fixing rod 17 and the roller 18, the first rack rod 10 can be not in contact with the rotor, but the roller 18 is in direct contact with the rotor, but the adjustment leveling work is not affected, the circumferential surfaces of the rotors can be positioned inside the two rollers 18 after the two rollers 18 are in contact with the end parts of the rotors, the rotors can be positioned while resisting, the rotors are clamped inside the two rollers 18, the effect of fixing the rotors is better than the effect of directly rubbing the rotors with the first rack rod 10, and the adjustment leveling work can be adapted to the rotors with different sizes, as shown in fig. 11.
As a further scheme of the invention, the tightening set comprises two first carrier rollers 19, two second carrier rollers 20 and a sensor 23, the two first carrier rollers 19 and the two second carrier rollers 20 are respectively positioned at the left side and the right side of the connecting block 8, the nylon belt 9 is annular, the upper parts of the nylon belt 9 are in transmission connection with the two first carrier rollers 19, the two first carrier rollers 19 are respectively and rotatably connected with a supporting piece 21, the two supporting pieces 21 are respectively and slidably connected with the connecting block 8, a first cylinder 22 is fixedly connected between the two supporting pieces 21 and the connecting block 8, the second carrier rollers 20 are respectively and rotatably connected with the connecting block 8 and are respectively contacted with the belt 9, the fixed rod 17 is in sliding connection with the first rack rod 10, and the sensor 23 is positioned at the top end of the fixed rod 17.
As a further scheme of the invention, the detection plates 13 are composed of a fixed plate 24 and a movable plate 25, wherein the fixed plate 24 is fixedly connected to the side wall of the second rack bar 11, the movable plate 25 is rotatably connected below the fixed plate 24, and the bottom end of the movable plate 25 is inclined outwards;
the lower parts of the two limiting rods 7 are respectively provided with a yielding group, and the two yielding groups are respectively used for controlling the two movable plates 25 positioned on the left side and the two movable plates 25 positioned on the right side to keep a vertical state and a yielding state.
As shown in fig. 2, 3, 5 and 6, when the cross beam 5 is lifted to the highest position before being lifted, two first air cylinders 22 are started, the two first air cylinders 22 are shortened simultaneously and pull two supporting pieces 21 to slide along the connecting block 8, the first carrier rollers 19 are driven to move when the supporting pieces 21 move, the nylon belts 9 are driven to move to two sides when the two first carrier rollers 19 move, then the nylon belts 9 below the connecting block 8 are folded, the rotor is driven to rise, the rotor is contacted with the bottom of the movable plate 25 along with the rising of the rotor, the fixing piece 24 is driven to move with the second rack bar 11 through the movable plate 25, so that the first rack bar 10 and the roller 18 are raised, the initial heights of the roller 18 and the second rack bar 11 are changed, when the rotor is lifted to be separated from the bottom of the movable plate 25, the rotor is directly raised, the movable plate 25 and the fixing piece 24 are not continuously moved, the roller 18 and the first rack bar 10 is also pushed to the two ends of the roller 23 along with the first rack bar 23, the sensor is simultaneously pushed to be horizontally, and the sensor is simultaneously pushed to be at the two ends of the roller is simultaneously pushed to the first rack bar 23 along with the first rack bar 23.
As a further scheme of the present invention, the yielding set includes a third gear 26, a fourth gear 27 and a third rack bar 28, the third rack bar 28 is fixedly connected to a side wall of the portal frame 2, the third gear 26 is meshed with the third rack bar 28, the third gear 26 is rotatably connected to an inner wall of the limiting bar 7, the fourth gear 27 is rotatably connected to a side of the inner wall of the limiting bar 7 far away from the third gear 26, a second chain 29 is drivingly connected between the third gear 26 and the fourth gear 27, the fourth gear 27 is meshed with a fourth rack bar 30, the fourth rack bar 30 is slidably connected to a side wall of the cross beam 5, a second spring 31 is fixedly connected between the fourth rack bar 30 and the cross beam 5, the fourth rack bar 30 is fixedly connected with a round bar 32, two pressing plates 33 are slidably connected to the round bar 32, the two pressing plates 33 are slidably connected to side walls of the two connecting blocks 8, the bottoms of the two pressing plates 33 are slidably connected to a fifth bar 34 in a horizontal direction, the fifth rack bar 30 is slidably connected to the fifth rack bar 34, and the fifth rack bar 34 is slidably connected to the fifth rack bar 35, and the fifth rack bar 35 is movably connected to the fifth bar 35.
As shown in fig. 1-3, 5, 8 and 9, since the bottom of the detection plate 13 has a certain distance, if the detection plate 13 descends directly, interference with the inner wall of the housing 3 may occur, so the arrangement of the bit group is used for avoiding interference between the detection plate 13 and the housing 3;
The work process of the bit group is as follows:
Before the hoisting work starts, the cross beam 5 is at an initial position, namely at the highest position, at the moment, the third gear 26 is meshed with the third rack bar 28, the third gear 26 is positioned at a position, close to the top end, of the third rack bar 28, at the moment, the fourth gear 27 is meshed with the fourth rack bar 30, the fourth rack bar 30 stretches the second spring 31, at the moment, the fourth rack bar 30 drives the round bar 32 to press the pressing plate 33, the pressing plate 33 is pressed downwards to press the fifth rack bar 34, the fifth rack bar 34 presses the fifth gear 35, so that the movable plate 25 is kept in a vertical state, then the tightening group can fold the nylon belt 9, so that the nylon belt 9 drives the rotor to rise, the end parts of the rotor can push the two movable plates 25 and the fixing pieces 24 to drive the second rack bar 11 to slide along the connecting block 8, and the fifth rack bar 34 can slide along the pressing plate 33, so that the transmission group can drive the two ends of the first rack bar 10 to rise a certain distance, and the two ends of the rotor can simultaneously contact with the roller 18;
Then, the lifting operation can be performed, the cross beam 5 descends when the lifting operation is performed, the limiting rod 7 slides down along the side wall of the portal frame 2, the limiting rod 7 descends to drive the third gear 26 to descend, the third gear 26 descends along the third rack bar 28 and is meshed with the third rack bar 28, the third gear 26 drives the fourth gear 27 to rotate through the second chain 29, the fourth gear 27 drives the fourth rack bar 30 to slide up along the cross beam 5, the second spring 31 is gradually and elastically relaxed, the second spring 31 is completely relaxed when the third gear 26 is disengaged from the third rack bar 28, the second spring 31 pushes the fourth rack bar 30 to slide up to the limit position, the fourth rack bar 30 drives the round bar 32 and the pressing plate 33 to ascend, the pressing plate 33 drives the fifth rack bar 34 to ascend, the fifth rack bar 34 drives the fifth gear 35 to rotate to one side, and the movable plate 25 is prevented from touching the shell 3 when the rotor is contacted with the shell 3.
As a further scheme of the invention, the driving group comprises a motor 36, the motor 36 is fixedly connected with the cross beam 5, an output shaft of the motor 36 is fixedly connected with a worm 37, and the worm 37 is in threaded connection with the driving block 6.
Example 1
As shown in fig. 8, after the motor 36 is started, the worm 37 is driven to rotate, and when the worm 37 rotates, the driving block 6 is driven to move, so that the connecting block 8 moves along with the movement, and further, the rotors with different sizes are conveniently hoisted.
Example two
As a further development of the invention, the drive group comprises a second cylinder 38, which second cylinder 38 is fixedly connected between the drive block 6 and the cross beam 5.
As shown in fig. 10, the driving block 6 is driven to slide along the cross beam 5 by adjusting the telescopic length of the second air cylinder 38, so that the hoisting work is facilitated.
The embodiments of the present invention described above are merely examples, and those skilled in the art to which the present invention pertains may make various modifications or derive equivalent other embodiments. Accordingly, the present invention is not limited to the embodiments mentioned in the above detailed description. Therefore, the true technical scope of the present invention should be determined according to the technical ideas of the scope of the appended claims. Moreover, it should be understood that the invention includes all modifications, equivalents and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an auxiliary lifting device is used in steam turbine installation, includes guide rail (1) and portal frame (2), be provided with on portal frame (2) and hang and put the group, portal frame (2) set up in the top of guide rail (1) and can slide along guide rail (1), portal frame (2) below is provided with casing (3), a plurality of mounting groove (4), its characterized in that have been seted up to casing (3) inside: the lifting device is characterized in that a cross beam (5) is arranged below the portal frame (2), limiting rods (7) are fixedly connected to the left side wall and the right side wall of the cross beam (5), the two limiting rods (7) are respectively connected with the left side wall and the right side wall of the portal frame (2) in a sliding mode in the vertical direction, the lifting group is used for lifting the cross beam (5), two driving blocks (6) are arranged on the cross beam (5), adjusting groups for leveling the front end and the rear end of a rotor are arranged on the two driving blocks (6), the driving blocks (6) are symmetrically arranged relative to the cross beam (5), driving groups are arranged on one side of each driving block (6), and the driving groups are used for driving the two driving blocks (6) to slide along the cross beam (5);
The adjusting group comprises a connecting block (8), a first rack bar (10), two second rack bars (11), two detection plates (13) and two transmission groups, wherein the connecting block (8) is fixedly connected to the bottom of a driving block (6), nylon belts (9) are arranged on the connecting block (8), the ends of the nylon belts (9) are wrapped by the nylon belts and drive the rotors to lift, one side of each nylon belt (9) is provided with a tightening group, the tightening group is used for controlling the downward shrinkage distance of the nylon belts (9), the first rack bars (10) are in sliding connection with the inner side walls of the connecting block (8) in the vertical direction, the two second rack bars (11) are symmetrically arranged on the left side and the right side of the first rack bars (10) respectively, the two second rack bars (11) are in sliding connection with the bottom of the connecting block (8), a first spring (12) is fixedly connected between the two second rack bars (11) and the inner walls of the connecting block (8), the two detection plates (13) are respectively arranged at the positions of the two rack bars (11) which are close to the first rack bars (11) and can move when the two detection plates (13) are in the horizontal direction and can move, the first rack bar (10) is driven by the transmission group to vertically slide and lift along the connecting block (8).
2. The auxiliary lifting device for installing a steam turbine according to claim 1, wherein: the transmission group comprises two first gears (14) and two second gears (15), the two first gears (14) and the two second gears (15) are respectively located at the rear of the two detection plates (13), the two first gears (14) are respectively located at the lower parts of the two second rack bars (11) and can be meshed with the second rack bars (11), the two second gears (15) are respectively located at the two sides of the first rack bars (10) and can be meshed with the first rack bars (10), the first gears (14) and the second gears (15) are both connected with the side wall of the connecting block (8) in a rotating mode, and a first chain (16) is connected between the two first gears (14) and the two second gears (15) in a transmission mode.
3. The auxiliary lifting device for installing a steam turbine according to claim 2, wherein: the side wall of the first rack bar (10) is provided with a fixed bar (17), two rollers (18) are rotatably connected to the upper side wall of the fixed bar (17), and the two rollers (18) are symmetrically arranged relative to the two first rack bars (10) and the fixed bar (17).
4. A steam turbine installation auxiliary lifting device according to claim 3, wherein: the tightening set comprises two first carrier rollers (19), two second carrier rollers (20) and a sensor (23), wherein the two first carrier rollers (19) and the two second carrier rollers (20) are respectively positioned on the left side and the right side of the connecting block (8), the nylon belt (9) is annular, the upper parts of the nylon belt are in transmission connection with the two first carrier rollers (19), the two first carrier rollers (19) are respectively connected with a supporting piece (21) in a rotating mode, the two supporting pieces (21) are respectively connected with the connecting block (8) in a sliding mode, the two supporting pieces (21) are respectively connected with a first cylinder (22) in a fixed mode, the second carrier rollers (20) are respectively connected with the connecting block (8) in a rotating mode, the two nylon belt (9) are respectively contacted with the nylon belt (17) and the first rack bar (10) in a sliding mode, and the sensor (23) is positioned at the top end of the fixing rod (17).
5. The auxiliary lifting device for installing a steam turbine according to claim 1, wherein: the detection plates (13) are composed of fixed plates (24) and movable plates (25), the fixed plates (24) are fixedly connected to the side wall of the second rack bar (11), the movable plates (25) are rotatably connected to the lower parts of the fixed plates (24), and the bottom ends of the movable plates (25) are inclined outwards;
the lower parts of the two limiting rods (7) are respectively provided with a yielding group, and the two yielding groups are respectively used for controlling the two movable plates (25) positioned on the left side and the two movable plates (25) positioned on the right side to keep a vertical state and a yielding state.
6. The auxiliary lifting device for installing a steam turbine according to claim 5, wherein: the yielding group comprises a third gear (26), a fourth gear (27) and a third rack bar (28), the third rack bar (28) is fixedly connected to the side wall of the portal frame (2), the third gear (26) is meshed with the third rack bar (28), the third gear (26) is rotationally connected to the inner wall of the limit bar (7), the fourth gear (27) is rotationally connected to one side, far away from the third gear (26), of the inner wall of the limit bar (7), a second chain (29) is connected between the third gear (26) and the fourth gear (27), the fourth rack bar (27) is meshed with a fourth rack bar (30), the fourth rack bar (30) is slidably connected to the side wall of the cross beam (5), a second spring (31) is fixedly connected between the fourth rack bar (30) and the cross beam (5), a round bar (32) is fixedly connected, two pressing plates (33) are slidably connected to the round bar (32), two pressing plates (33) are slidably connected to the two pressing plates (34) in the horizontal direction of the two connecting plates (34) respectively, the two pressing plates (34) are slidably connected to the bottom of the fifth rack bar (34), the two fifth rack bars (34) are meshed with fifth gears (35), and the two fifth gears (35) are fixedly connected with the rotating shafts of the movable plates (25) respectively.
7. The auxiliary lifting device for installing a steam turbine according to claim 1, wherein: the driving group comprises a motor (36), the motor (36) is fixedly connected with the cross beam (5), an output shaft of the motor (36) is fixedly connected with a worm (37), and the worm (37) is in threaded connection with the driving block (6).
8. The auxiliary lifting device for installing a steam turbine according to claim 1, wherein: the driving group comprises a second air cylinder (38), and the second air cylinder (38) is fixedly connected between the driving block (6) and the cross beam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410192776.1A CN117755973B (en) | 2024-02-21 | 2024-02-21 | Auxiliary lifting device for installation of steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410192776.1A CN117755973B (en) | 2024-02-21 | 2024-02-21 | Auxiliary lifting device for installation of steam turbine |
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| CN117755973A CN117755973A (en) | 2024-03-26 |
| CN117755973B true CN117755973B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410192776.1A Active CN117755973B (en) | 2024-02-21 | 2024-02-21 | Auxiliary lifting device for installation of steam turbine |
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| CN (1) | CN117755973B (en) |
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| SU614014A1 (en) * | 1976-12-13 | 1978-07-05 | Предприятие П/Я А-1097 | Ship bridge crane |
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| CN206307906U (en) * | 2016-12-23 | 2017-07-07 | 扬州金源机器人自动化设备有限公司 | A kind of all-around mobile portal frame |
| CN107879254A (en) * | 2017-11-09 | 2018-04-06 | 芜湖市长江起重设备制造有限公司 | A kind of vertical shaft gantry crane |
| CN107988916A (en) * | 2017-12-29 | 2018-05-04 | 绍兴尹创机械科技有限公司 | A kind of bridge construction gantry hanger |
| CN215101525U (en) * | 2021-01-21 | 2021-12-10 | 四川省工业设备安装集团有限公司 | Movable portal frame for installing power distribution cabinet |
| CN216971273U (en) * | 2022-03-10 | 2022-07-15 | 陕西勇拓机械科技有限公司 | Gantry type single steel bar pickup device |
| CN218058189U (en) * | 2022-09-19 | 2022-12-16 | 江苏科耐特智能机器人有限公司 | Heavy-load travelling crane |
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2024
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| CN107988916A (en) * | 2017-12-29 | 2018-05-04 | 绍兴尹创机械科技有限公司 | A kind of bridge construction gantry hanger |
| CN215101525U (en) * | 2021-01-21 | 2021-12-10 | 四川省工业设备安装集团有限公司 | Movable portal frame for installing power distribution cabinet |
| CN216971273U (en) * | 2022-03-10 | 2022-07-15 | 陕西勇拓机械科技有限公司 | Gantry type single steel bar pickup device |
| CN218058189U (en) * | 2022-09-19 | 2022-12-16 | 江苏科耐特智能机器人有限公司 | Heavy-load travelling crane |
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| CN117755973A (en) | 2024-03-26 |
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