CN214686425U

CN214686425U - Bearing turning device for overhauling steam turbine bearing

Info

Publication number: CN214686425U
Application number: CN202120915720.6U
Authority: CN
Inventors: 张磊; 陈晓东
Original assignee: Dezhou Power Plant of Huaneng International Power Co Ltd
Current assignee: Dezhou Power Plant of Huaneng International Power Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-12
Anticipated expiration: 2031-04-29

Abstract

The utility model relates to a steam turbine bearing technical field just discloses a steam turbine bearing overhauls and uses turn-over tile device, the on-line screen storage device comprises a base, the top of base is provided with gear motor, gear motor's output shaft has the drive tooth through the coupling joint, the avris of drive tooth is connected with the rack, the back of rack is fixed with the slider, the outside of slider is connected with the spacing rail fixed with gear motor, the both ends below of rack is connected with the lower bearing shell, the main shaft is installed to the interior recess of lower bearing shell, the below of lower bearing shell is connected with the bearing box, the constant head tank with base matched with is seted up at the top of bearing box. This steam turbine bearing overhauls uses turn-over tile device, it is rotatory through driving the initiative tooth through gear motor, and then under the meshing with the rack that lower bearing bush both ends were fixed mutually, drive the lower bearing bush and overturn, need not dependent manual operation, improved turn-over tile efficiency for maintenance efficiency has reduced the damage that the lower bearing bush received because of dependent manual operation at the turn-over tile process simultaneously.

Description

Bearing turning device for overhauling steam turbine bearing

Technical Field

The utility model relates to a steam turbine bearing technical field specifically is a steam turbine bearing overhauls with turning over tile device.

Background

The bearing is an important component of the steam turbine, and the main bearing is also called a radial bearing. Its function is to bear the entire weight of the rotor and the centrifugal forces due to rotor mass imbalance, determining the correct radial position of the rotor in the cylinder. Because each bearing needs to bear higher load and the rotating speed of the shaft neck is very high, the bearings of the steam turbine all adopt a bush type sliding bearing taking liquid friction as a theoretical basis, an oil film is formed between the shaft neck and the bush by means of lubricating oil with certain pressure to establish liquid friction, so that the steam turbine can safely and stably operate, and in the process of overhauling the bearings of the steam turbine, in order to facilitate the detection of the lower bush, the bush turning operation is needed.

The common tile turnover device generally needs manual operation to carry out the tile turnover operation of lower bearing bush, has increased workman's work load, wastes time and energy, and tile turnover efficiency is lower, brings the hindrance for the maintenance progress, and the lower bearing bush receives the damage easily at the tile turnover in-process simultaneously, provides a steam turbine bearing overhauls and uses the tile turnover device for this reason.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a steam turbine bearing overhauls uses turn-over tile device possesses and need not manpower turn-over tile and operation advantages such as safety and stability, has solved the operation of turning over tile that current turn-over tile device generally needs the human operation to carry out the lower bearing bush, has increased workman's work load, wastes time and energy, and turn over tile efficiency is lower, brings the hindrance for the maintenance progress, receives the problem of damage simultaneously at the turn-over tile in-process lower bearing bush easily.

(II) technical scheme

Need not manpower tile turning and operate the purpose of safety and stability for realizing the aforesaid, the utility model provides a following technical scheme: the utility model provides a steam turbine bearing overhauls and uses turn-over tile device, includes the base, the top of base is provided with gear motor, gear motor's output shaft has the initiative tooth through the coupling joint, the avris of initiative tooth is connected with the rack, the back of rack is fixed with the slider, the outside of slider is connected with the spacing rail fixed with gear motor, the both ends below of rack is connected with the lower bearing shell, the main shaft is installed to the interior recess of lower bearing shell, the below of lower bearing shell is connected with the bearing box, the constant head tank with base matched with has been seted up at the top of bearing box, the locking hole has all been seted up at the top both ends of lower bearing shell, the internal connection in locking hole has the screw rod that runs through in the rack.

Preferably, the driving gear is meshed with the rack, and the rack is arranged in an arc shape.

Preferably, the sliding block and the limit rail form a sliding structure.

Preferably, the screw rod is in threaded connection with the locking holes, and the locking holes are symmetrically provided with 2 locking holes relative to the axis of the lower bearing bush.

(III) advantageous effects

Compared with the prior art, the utility model provides a steam turbine bearing overhauls uses turn-over tile device possesses following beneficial effect:

1. according to the tile turning device for overhauling the bearing of the steam turbine, the driving gear is driven to rotate through the speed reduction motor, and then the lower bearing bush is driven to turn under the meshing of the racks fixed to the two ends of the lower bearing bush, so that manual operation is not needed, the tile turning efficiency is improved, the overhauling efficiency is accelerated, and meanwhile, the damage to the lower bearing bush caused by manual operation in the tile turning process is reduced;

2. this steam turbine bearing overhauls uses turn-over tile device through setting up the slider in spacing rail inside, carries on spacingly to the turn-over tile orbit of lower bearing bush, guarantees the steady turn-over tile of lower bearing bush under drive tooth and rack traction drive.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connecting structure between the driving gear and the rack of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a base; 2. a reduction motor; 3. a driving tooth; 4. a rack; 5. a slider; 6. a limit rail; 7. a lower bearing bush; 8. a main shaft; 9. a bearing housing; 10. positioning a groove; 11. a locking hole; 12. a screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a technical scheme, a tile turning device for turbine bearing maintenance, comprising a base 1, a speed reducing motor 2, a driving gear 3, a rack 4, a slider 5, a limit rail 6, a lower bearing bush 7, a main shaft 8, a bearing box 9, a positioning groove 10, a locking hole 11 and a screw 12, wherein the speed reducing motor 2 is arranged above the base 1, an output shaft of the speed reducing motor 2 is connected with the driving gear 3 through a coupler, the side of the driving gear 3 is connected with the rack 4, the driving gear 3 is meshed with the rack 4, the rack 4 is arranged in an arc shape, the driving gear 3 drives the rack 4 to move, and further the lower bearing bush 7 fixed with two ends of the rack 4 is turned over, the structure is simple, manpower is not needed, the workload of workers is reduced, the tile turning efficiency during bearing maintenance is improved, the slider 5 is fixed on the back of the rack 4, the outer side of the sliding block 5 is connected with a limit rail 6 fixed with the speed reducing motor 2, the sliding block 5 and the limit rail 6 form a sliding structure, the sliding block 5 slides along the limit rail 6 in the tile turning process through the matching of the sliding block 5 and the limit rail 6 to limit the moving track of the rack 4 and the lower bearing bush 7 so as to ensure the smooth operation of tile turning operation, the lower parts of two ends of the rack 4 are connected with the lower bearing bush 7, a main shaft 8 is arranged at the concave part of the lower bearing bush 7, the lower part of the lower bearing bush 7 is connected with a bearing box 9, the top of the bearing box 9 is provided with a positioning groove 10 matched with the base 1, two ends of the top of the lower bearing bush 7 are provided with locking holes 11, the inside of each locking hole 11 is connected with a screw 12 penetrating through the rack 4, the screw 12 is in threaded connection with the locking holes 11, the locking holes 11 are symmetrically provided with 2 relative to the axis of the lower bearing bush 7, the lower bearing bush 7 and the rack 4 are connected and fixed through the matching of the screw 12 and the locking holes 11, and the dismounting and the mounting are convenient, and the tile turning and the use are convenient for users.

The use method of the device comprises the following steps: before the tiling operation, at first place base 1 in the constant head tank 10 on bearing box 9 surface, 4 bottom both ends of rack and 7 top both ends of lower bearing bush align this moment, it is fixed with the screw-thread fit of locking hole 11 through screw rod 12, the slider 5 at the rack 4 back is arranged in spacing rail 6 simultaneously, open and press gear motor 2 during the tiling, fix gear motor 2, gear motor 2 drives initiative tooth 3 clockwise turning, and then rotate through rack 4 with initiative tooth 3 engaged with, pull lower bearing bush 7 and turn over the tile, slider 5 slides along spacing rail 6 simultaneously and carries on spacingly to the tiling orbit of lower bearing bush 7, realize the tiling, then lift off rack 4 from lower bearing bush 7 through screw rod 12, it can to overhaul after utilizing hoisting device to hoist lower bearing bush 7.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steam turbine bearing overhauls uses turn-over tile device, includes base (1), its characterized in that: a speed reducing motor (2) is arranged above the base (1), an output shaft of the speed reducing motor (2) is connected with a driving gear (3) through a coupler, the side of the driving tooth (3) is connected with a rack (4), the back of the rack (4) is fixed with a sliding block (5), the outer side of the sliding block (5) is connected with a limit rail (6) fixed with the speed reducing motor (2), the lower parts of the two ends of the rack (4) are connected with lower bearing bushes (7), a main shaft (8) is arranged in the concave part of the lower bearing bushes (7), a bearing box (9) is connected below the lower bearing bush (7), a positioning groove (10) matched with the base (1) is arranged at the top of the bearing box (9), locking holes (11) are formed in two ends of the top of the lower bearing bush (7), and a screw rod (12) penetrating through the rack (4) is connected to the inside of each locking hole (11).

2. The apparatus of claim 1, wherein the apparatus further comprises: the driving gear (3) is meshed with the rack (4), and the rack (4) is arranged in an arc shape.

3. The apparatus of claim 1, wherein the apparatus further comprises: the sliding block (5) and the limiting rail (6) form a sliding structure.

4. The apparatus of claim 1, wherein the apparatus further comprises: the screw rod (12) is in threaded connection with the locking holes (11), and the locking holes (11) are symmetrically provided with 2 holes relative to the axis of the lower bearing bush (7).