CN215170233U

CN215170233U - Dismounting device for upper covers of front and rear bearing boxes of steam turbine

Info

Publication number: CN215170233U
Application number: CN202121039064.4U
Authority: CN
Inventors: 赵志鹏; 王晓旭; 吴文国; 滕先庆; 刘天宇; 李佳峥
Original assignee: Cofco Sugar Industry Liaoning Co ltd
Current assignee: Cofco Sugar Industry Liaoning Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-14
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses a bearing box dismounting device for upper cover around steam turbine. This dismounting device includes: the device comprises a first bolt, a second bolt, a supporting plate, an upper limiting plate, an upper screw tap, a lower limiting plate, a lower screw tap, a bearing table and a bolt rotating seat; when dismantling bearing box upper cover around to the steam turbine, can carry out the tapping through last screw tap and lower screw tap respectively to the upper cover of bearing box around the steam turbine and a pair of bolt hole of covering down, screw in the screw hole of covering down and stretching into first bolt from the screw hole of upper cover, stretch into the screw hole of covering down until the bottom contact with first bolt with the second bolt from the bottom of covering down, later usable bolt rotates the seat lock in second bolt bottom, and rotate the bolt and rotate the seat, make the second bolt rise in the covering down, jack-up first bolt in the upper cover, thereby realize the separation of bearing box upper cover and covering down around the steam turbine. The device simple structure, convenient to use to can not cause the damage to bearing box inner structure.

Description

Dismounting device for upper covers of front and rear bearing boxes of steam turbine

Technical Field

The utility model relates to a technical field is dismantled to the steam turbine, concretely relates to bearing box dismounting device for upper cover around steam turbine.

Background

The front bearing box and the rear bearing box of the steam turbine need to be disassembled, cleaned and measured with some technical parameters every year for maintenance. As shown in fig. 1, because the bonding surface of the upper cover 100 and the lower cover 200 of the bearing box is not provided with a sealing gasket, the gasket is replaced by a sealing adhesive for sealing, the upper cover 100 of the front and rear bearing boxes of the steam turbine is difficult to detach due to the viscosity of the sealing adhesive, a small hook for lifting in the prior art can easily cause overload alarm, and a large hook for lifting in the prior art can cause the upper cover 100 to suddenly rise due to overlarge force, so that the bearing bush inside can be easily collided to cause damage. Therefore, it is necessary to provide a dismounting device for the upper covers of the front and rear bearing boxes of the steam turbine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a back bearing box dismounting device for upper cover before steam turbine to back bearing box upper cover is difficult to the problem of safe dismantlement before solving the steam turbine.

The utility model provides a bearing box dismounting device for upper cover around steam turbine, include: the device comprises a first bolt, a second bolt, a supporting plate, an upper limiting plate, an upper screw tap, a lower limiting plate, a lower screw tap, a bearing table and a bolt rotating seat; the two side walls of the supporting plate are provided with vertically extending guide rails, one end of the bearing table is in sliding connection with the guide rail on one side of the supporting plate, the bolt rotating seat is rotatably connected above the bearing table through a rotating shaft, and a groove matched with the shape of the bolt head of the second bolt is formed in the bolt rotating seat; the upper limiting plate and the lower limiting plate are respectively connected with the guide rail on the other side of the supporting plate in a sliding mode, the upper limiting plate is located above the lower limiting plate, the upper screw tap is arranged on the upper limiting plate, the lower screw tap is arranged on the lower limiting plate, the diameter of the first bolt is smaller than that of the second bolt, the diameter of the first threaded hole machined by the upper screw tap is matched with the first bolt, the diameter of the second threaded hole machined by the lower screw tap is matched with the second bolt, and a rotating arm is arranged on the outer wall of the bolt rotating seat.

Further, go up the limiting plate and be provided with last limiting hole, go up the screw tap include the screw tap dwang and connect in the last screw tap body of going up screw tap dwang bottom, it passes to go up the screw tap body go up the limiting hole, it is located to go up the screw tap dwang go up the limiting plate top.

Further, be provided with down the limiting hole on the lower limiting plate, the lower tap include the lower tap dwang and connect in the lower tap body at lower tap dwang top, the lower tap body passes down the limiting hole, the lower tap dwang is located the limiting plate below down, go up the tap body with the lower tap body is coaxial, go up the limiting hole with the limiting hole is coaxial down.

Furthermore, the top end face of backup pad is provided with the location and detains, the location is detained including locating plate and articulated elements, the locating plate includes two parallel arrangement's baffle, the one end of baffle is connected with connecting portion, connecting portion with the articulated elements is connected, two the interval of baffle with the thickness of last limiting plate is the same, it is located two to go up the limiting plate between the baffle.

Further, a base is arranged below one side of the supporting plate and located below the bearing table, and a spring is arranged between the base and the bearing table.

The utility model discloses following beneficial effect has: the utility model provides a pair of bearing box dismounting device for upper cover around steam turbine, include: first bolt, the second bolt, the backup pad, go up the limiting plate, go up the screw tap, the limiting plate down, the lower screw tap, plummer and bolt rotate the seat, when bearing box upper cover is dismantled around to the steam turbine, can carry out the tapping to the upper cover of bearing box and a pair of bolt hole on the lower cover around the steam turbine respectively through last screw tap and lower screw tap, screw the screw hole of upper cover from the upper cover with first bolt and stretch into in the screw hole of lower cover, stretch into the screw hole of lower cover until the bottom contact with first bolt with the second bolt from the bottom of lower cover, later usable bolt rotates the seat lock in second bolt bottom, and rotate the bolt and rotate the seat, make the second bolt rise in the lower cover, jack up the first bolt in the upper cover, thereby realize the separation of bearing box upper cover and lower cover around the steam turbine. The device simple structure, convenient to use to can not cause the damage to bearing box inner structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the utility model provides a pair of bearing box dismounting device's for upper cover overall structure schematic diagram around steam turbine.

Fig. 2 is the utility model provides a pair of bearing box dismounting device's last screw tap schematic diagram for upper cover around steam turbine.

Fig. 3 is the utility model provides a pair of bearing box dismounting device's lower screw tap schematic diagram for upper cover around steam turbine.

Fig. 4 is the utility model provides a pair of bearing housing upper cover is with dismounting device's plummer sketch map around steam turbine.

Illustration of the drawings: 1-a first bolt; 2-a second bolt; 3-a support plate; 4-upper limiting plate; 5-screwing a screw tap; 6-lower limiting plate; 7-lower screw tap; 8-positioning buckle; 9-a base; 10-a carrier table; 11-a spring; 12-a bolt rotation seat; 13-a swivel arm; 14-a rotating shaft; 15-a guide rail; 41-upper limiting hole; 51-an upper tap rotating rod; 52-upper tap body; 61-lower limiting orifice; 71-lower tap rotating rod; 72-lower tap body; 81-positioning plate; 82-a hinge; 812-a baffle; 811-connecting part.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 4, an embodiment of the present invention provides a dismounting device for an upper cover of a front and rear bearing housing of a steam turbine, including: the screw driver comprises a first bolt 1, a second bolt 2, a support plate 3, an upper limiting plate 4, an upper screw tap 5, a lower limiting plate 6, a lower screw tap 7, a bearing table 10 and a bolt rotating seat 12.

The two side walls of the supporting plate 3 are provided with vertically extending guide rails 15, one end of the bearing table 10 is connected with the guide rail 15 on one side of the supporting plate 3 in a sliding mode, the bolt rotating seat 12 is connected above the bearing table 10 in a rotating mode through a rotating shaft 14, a groove matched with the shape of the bolt head of the second bolt 2 is formed in the bolt rotating seat 12, and a rotating arm 13 is arranged on the outer wall of the bolt rotating seat 12. The bolt head of the second bolt 2 can be inserted into the groove on the bolt rotating seat 12, and the rotating arm 13 is moved to drive the bolt rotating seat 12 to rotate, so as to drive the second bolt 2 to rotate.

Go up spacing board 4 and spacing board 6 down respectively with the guide rail 15 sliding connection of backup pad 3 opposite side, go up spacing board 4 and be located the top of spacing board 6 down, go up tap 5 and set up on spacing board 4, lower tap 7 sets up on spacing board 6 down, the diameter of first bolt 1 is less than the diameter of second bolt 2, the diameter and the first bolt 1 phase-match of the first screw hole of going up 5 processed taps, the diameter and the second bolt 2 phase-match of the second screw hole of lower tap 7 processed. The upper tap 5 and the lower tap 7 are respectively used for tapping bolt holes on an upper cover 100 and a lower cover 200 of the front bearing box and the rear bearing box of the steam turbine.

In this embodiment, the upper limiting plate 4 is provided with an upper limiting hole 41, the upper tap 5 includes an upper tap rotating rod 51 and an upper tap body 52 connected to the bottom of the upper tap rotating rod 51, the upper tap body 52 penetrates the upper limiting hole 41, the upper tap rotating rod 51 is located above the upper limiting plate 4, and the upper tap rotating rod 51 can be held by a hand to drive the upper tap body 52 to rotate and descend along the upper limiting hole 41 so as to tap the bolt hole on the upper cover 100.

The lower limiting plate 6 is provided with a lower limiting hole 61, the lower tap 7 comprises a lower tap rotating rod 71 and a lower tap body 72 connected to the top of the lower tap rotating rod 71, the lower tap body 72 penetrates through the lower limiting hole 61, the lower tap rotating rod 71 is located below the lower limiting plate 6, the upper tap body 52 is coaxial with the lower tap body 72, the upper limiting hole 41 is coaxial with the lower limiting hole 61, and the lower tap rotating rod 71 is held by a hand to drive the lower tap body 72 to rotate and ascend along the lower limiting hole 61 so as to tap a bolt hole in the lower cover 200.

In this embodiment, a positioning buckle 8 is disposed on an end surface of the top of the supporting plate 3, the positioning buckle 8 includes a positioning plate 81 and a hinge 82, the positioning plate 81 includes two parallel baffles 812, one end of the baffle 812 is connected with a connecting portion 811, the connecting portion 811 is connected with the hinge 82, a distance between the two baffles 812 is the same as a thickness of the upper limiting plate 4, the upper limiting plate 4 is located between the two baffles 812, the upper limiting plate 4 can be fixed by the positioning buckle 8, and the upper limiting plate 4 is prevented from moving in a vertical direction.

In this embodiment, a base 9 is disposed below one side of the support plate 3, the base 9 is located below the bearing platform 10, and a spring 11 is disposed between the base 9 and the bearing platform 10, and the spring 11 can push the bearing platform 10 to rise in the vertical direction.

The embodiment of the utility model provides a bearing box dismounting device for upper cover around steam turbine's application method as follows: first, bolt holes are formed in the upper cover 100 and the lower cover 200 of the conventional front and rear bearing housings of the steam turbine, and a pair of coaxial bolt holes are selected for tapping in the upper cover 100 and the lower cover 200. The upper limiting plate 4 is moved to the upper portion of the upper cover 100, the upper screw tap body 52 is aligned to the bolt hole of the upper cover 100, the upper limiting plate 4 is moved to descend along the guide rail 15, the upper screw tap body 52 enters the bolt hole, the upper screw tap rotating rod 51 is held by hand to rotate the upper screw tap body 52, meanwhile, the upper screw tap body 52 descends in the bolt hole, threads are manufactured in the bolt hole of the upper cover 100, and the threads are matched with the external threads of the first bolt 1. Move lower limiting plate 6 to lower cover 200 below, aim at lower tap body 72 at the bolt hole of lower cover 200, move lower limiting plate 6 and rise along guide rail 15 for lower tap body 72 gets into the bolt hole, hold lower tap dwang 71 and rotate lower tap body 72, lower tap body 72 rises in the bolt hole simultaneously, accomplishes the downthehole preparation screw thread of bolt to lower cover 200, and this screw thread matches with the external screw thread of second bolt 2. Then, the first bolt 1 is screwed from the screw hole of the upper cap 100 and extends into the screw hole of the lower cap 200, the second bolt 2 extends into the threaded hole of the lower cover 200 from the bottom of the lower cover 200 until contacting with the bottom of the first bolt 1, then the spring 11 can be compressed, the bolt rotating seat 12 is buckled at the bottom of the second bolt 2, then the bolt rotating seat 12 is rotated, the bolt rotating seat 12 drives the second bolt 2 to rotate, meanwhile, the spring 11 pushes the second bolt 2 to rise in the lower cover 200, so as to jack up the first bolt 1 in the upper cover 100, and under the action of the self weight of the lower cover 200 of the front and rear bearing boxes of the steam turbine, or the lower cover 200 is fixed by contacting with the external means again, the lower cover 200 will remain still, the first bolt 1 will drive the upper cover 100 to rise, therefore, the upper cover 100 and the lower cover 200 of the front and rear bearing boxes of the steam turbine are separated, and the internal structure of the bearing box is not damaged.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bearing box dismounting device for upper cover around steam turbine which characterized in that includes: the device comprises a first bolt (1), a second bolt (2), a support plate (3), an upper limiting plate (4), an upper screw tap (5), a lower limiting plate (6), a lower screw tap (7), a bearing table (10) and a bolt rotating seat (12);

two side walls of the supporting plate (3) are provided with vertically extending guide rails (15), one end of the bearing table (10) is in sliding connection with the guide rails (15) on one side of the supporting plate (3), the bolt rotating seat (12) is rotatably connected above the bearing table (10) through a rotating shaft (14), a groove matched with the appearance of the bolt head of the second bolt (2) is formed in the bolt rotating seat (12), and a rotating arm (13) is arranged on the outer wall of the bolt rotating seat (12);

go up limiting plate (4) with lower limiting plate (6) respectively with guide rail (15) sliding connection of backup pad (3) opposite side, it is located to go up limiting plate (4) the top of limiting plate (6) down, go up screw tap (5) set up in go up on limiting plate (4), lower screw tap (7) set up in on limiting plate (6) down, the diameter of first bolt (1) is less than the diameter of second bolt (2), the diameter of the first screw hole of going up screw tap (5) processing with first bolt (1) phase-match, the diameter of the second screw hole of lower screw tap (7) processing with second bolt (2) phase-match.

2. The dismounting device for the upper covers of the front and rear bearing boxes of the steam turbine according to claim 1, wherein the upper limiting plate (4) is provided with an upper limiting hole (41), the upper tap (5) comprises an upper tap rotating rod (51) and an upper tap body (52) connected to the bottom of the upper tap rotating rod (51), the upper tap body (52) penetrates through the upper limiting hole (41), and the upper tap rotating rod (51) is located above the upper limiting plate (4).

3. The dismounting device for the upper cover of the front and rear bearing boxes of the steam turbine as claimed in claim 2, wherein the lower limiting plate (6) is provided with a lower limiting hole (61), the lower tap (7) comprises a lower tap rotating rod (71) and a lower tap body (72) connected to the top of the lower tap rotating rod (71), the lower tap body (72) penetrates through the lower limiting hole (61), the lower tap rotating rod (71) is located below the lower limiting plate (6), the upper tap body (52) is coaxial with the lower tap body (72), and the upper limiting hole (41) is coaxial with the lower limiting hole (61).

4. The dismounting device for the upper covers of the front bearing box and the rear bearing box of the steam turbine is characterized in that a positioning buckle (8) is arranged on the top end face of the supporting plate (3), the positioning buckle (8) comprises a positioning plate (81) and a hinge piece (82), the positioning plate (81) comprises two baffle plates (812) which are arranged in parallel, one end of each baffle plate (812) is connected with a connecting portion (811), the connecting portion (811) is connected with the hinge piece (82), the distance between the two baffle plates (812) is the same as the thickness of the upper limiting plate (4), and the upper limiting plate (4) is located between the two baffle plates (812).

5. The dismounting device for the upper covers of the front and rear bearing boxes of the steam turbine according to claim 4, characterized in that a base (9) is arranged below one side of the supporting plate (3), the base (9) is positioned below the bearing platform (10), and a spring (11) is arranged between the base (9) and the bearing platform (10).