CN211283423U

CN211283423U - Red cover of impeller lifts by crane frock

Info

Publication number: CN211283423U
Application number: CN202020030375.3U
Authority: CN
Inventors: 顾冬冬; 彭浩鸿
Original assignee: Jintongling Technology Group Co ltd
Current assignee: Jintongling Technology Group Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-08-18
Anticipated expiration: 2030-01-08

Abstract

The utility model discloses an impeller red jacket hoisting tool, which comprises a lock catch, a first steel wire rope noose, an adjusting part, a second steel wire rope noose and a wheel disc lifting hook; the lock catch is connected with three steel wire rope lassos I; the first steel wire rope nooses are connected through the adjusting part and the second steel wire rope nooses; the two ends of the steel wire rope lasso are connected with the wheel disc lifting hook. The wheel disc lifting hook comprises a hook handle and a hook body; the hook handle and the hook body are integrally formed, and a connecting hole connected with the steel wire rope lasso is formed in the top of the hook handle. The utility model is suitable for an use in the red cover assembling process of steam turbine impeller, have steady reliable, the adjustable effect of level, and do not receive the impeller diameter size, have the commonality.

Description

Red cover of impeller lifts by crane frock

Technical Field

The utility model relates to a red cover lifts by crane structure, concretely relates to impeller red cover lifts by crane frock.

Background

The rotor is one of the most difficult, the longest period and the most expensive core components in the production process of the steam turbine. Along with the national development, the demand for the steam turbine rotor is more and more outstanding, and to the kind structural style of steam turbine rotor many, some turbine rotor sizes are big, and the whole forging cost is high, and is also very high to forging technical requirement, and the suit rotor is the rotor that forms on the pivot with the red cover of impeller back heating, is used for steam turbine low pressure part mostly, and the suit impeller adopts interference fit with the axle, and this is the main form of assembly impeller. Before the impeller is sleeved in a red cover, the rotor needs to be hoisted and erected firstly and placed in a pit, when the impeller is sleeved in the red cover, the impeller needs to be heated to a certain temperature, the temperature of the impeller and the diameter size of an inner hole of the impeller are measured, the hoisting level of the impeller is confirmed, then the impeller is sleeved in the vertical main shaft head, and the impeller is naturally cooled to tightly hold the main shaft at a required axial positioning position. In the process of sleeving the impeller in a shrinkage fit manner, certain potential safety hazards exist, the impeller is clamped before the impeller is axially positioned after the impeller is sleeved, and the clamped impeller cannot be withdrawn in time, so that accidents are caused. Through analysis, except that the time for shrink fit is too long, the main reason is that the impeller is inclined in the process of sleeving, the impeller is in contact with a main shaft after being sleeved, and a contact part is quickly contracted and clamped, so that an adjustable hoisting tool needs to be designed for the shrink fit of the impeller.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an impeller red cover lifts by crane frock is applicable to the red cover assembling process in use of steam turbine impeller, has steady reliable, the adjustable effect of level, and does not receive the impeller diameter size, has the commonality.

In order to solve the technical problem, the utility model discloses take following technical scheme: an impeller red cover hoisting tool comprises a lock catch, a first steel wire rope lasso, an adjusting piece, a second steel wire rope lasso and a wheel disc lifting hook; the lock catch is connected with three steel wire rope lassos I; the first steel wire rope nooses are connected through the adjusting part and the second steel wire rope nooses; the two ends of the steel wire rope lasso are connected with the wheel disc lifting hook; the wheel disc lifting hook comprises a hook handle and a hook body; the hook handle and the hook body are integrally formed, and a connecting hole connected with the steel wire rope lasso is formed in the top of the hook handle.

The adjusting piece is a lockset screw fastener and comprises a left-handed screw, a closed screw fastener and a right-handed screw; a cavity for accommodating the left-handed screw and the right-handed screw is arranged in the closed turnbuckle, and a threaded hole matched with the left-handed screw and the right-handed screw is formed in the top of the cavity; lifting lugs are arranged at the outer end parts of the left-handed screw and the right-handed screw and are used for being connected with a steel wire rope lasso.

Further, the included angle between the hook handle and the hook body is 75-65 degrees.

Further, a red copper base plate is arranged on the inner side of the hook body; the red copper base plate is fixed on the hook body through screws.

The utility model has the advantages that:

the utility model discloses a frock, in the impeller red cover of unit, can reach effective, safe lifting by crane, guarantee that the blade is not gouged, can reduce again the impeller and lifting by crane rocking of in-process to improve impeller horizontal adjustment's efficiency and precision, and the small and exquisite convenience of frock, commonality, practicality are strong.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed 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 described in the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the wheel disc hook.

Fig. 3 is a schematic structural view of the lock turnbuckle.

In the figure: 1-locking; 2-looping a first steel wire rope; 3-a lock screw fastener; 31-left-handed screw; 32-closed turnbuckle; 33-right-handed screw; 4-a steel wire rope lasso II; 5-a wheel disc hook; 51-hook handle; 52-hook body; 6-red copper backing plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description.

As shown in fig. 1, the impeller red jacket lifting tool of the present invention comprises a lock catch 1, a first steel wire rope noose 2, an adjusting member 3, a second steel wire rope noose 4 and a wheel disc hook 5; the lock catch 1 is connected with three steel wire rope lassos I2; the first steel wire rope noose 2 is connected with the second steel wire rope noose 4 through the adjusting part 3; the end part of the second steel wire rope lasso 4 is connected with a wheel disc lifting hook 5.

As shown in fig. 3, the adjusting member 3 of the present invention is a lock screw, which includes a left-handed screw 31, a closed screw 32, and a right-handed screw 33; a cavity for accommodating the left-handed screw 31 and the right-handed screw 33 is arranged in the closed turnbuckle 32, and a threaded hole matched with the left-handed screw 31 and the right-handed screw 33 is formed in the top of the cavity; lifting lugs are arranged at the outer end parts of the left-handed screw 31 and the right-handed screw 33 and are used for being connected with a steel wire rope noose.

As shown in fig. 2, the wheel disc hanger 5 of the present invention includes a shank 51 and a hook body 52; the hook handle 51 and the hook body 52 are integrally formed, and the top of the hook handle 51 is provided with a connecting hole connected with the steel wire rope noose. The included angle between the hook handle 51 and the hook body 52 is 75-65 degrees. The inner side of the hook body 52 is provided with a red copper backing plate 6; the red copper backing plate 6 is fixed on the hook body 52 through screws.

The wheel disc lifting hook 5 of the utility model is forged by 45 steel and then bent to form for lifting a hook impeller, and the red copper backing plate is arranged on the plane of the lifting hook, so that the damage of the impeller blade caused by collision in the lifting process can be effectively prevented; the adjusting piece 3 is a closed lock screw fastener, and the upper part and the lower part are respectively provided with an adjustable lifting lug which is connected by left-handed threads and right-handed threads. When the impeller is hoisted, the three claws are distributed at the edge of the impeller, a horizontal measuring instrument is arranged on the end face of the impeller, and the level of the impeller (the level bubble is in 3 grids) is adjusted through the adjusting piece 3. And then heating two end faces of the impeller by adopting a drying gun, when the expansion size and the temperature of the impeller meet the assembly requirements, stably operating the travelling crane by a crane worker, quickly hoisting the impeller, enabling the impeller to rise to a position 200mm higher than the top of the main shaft, and then translating to the center of the main shaft. After an assembler adjusts the relative center in a matched mode, the travelling crane quickly descends to the step position of the impeller positioning, the center is confirmed again, after the impeller and the main shaft are prevented from being clamped, the travelling crane slowly descends, the main shaft is prevented from being pulled, the impeller stably passes through the step position, the travelling crane is commanded to quickly descend to the impeller axial positioning position, the impeller axial positioning is confirmed, and the shrinkage fit is finished.

The above-mentioned embodiments are only described as the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and the technical content of the present invention, which is claimed by the present invention, is fully recorded in the technical claims.

Claims

1. Red cover of impeller lifts by crane frock, its characterized in that: comprises a lock catch (1), a first steel wire rope noose (2), an adjusting part (3), a second steel wire rope noose (4) and a wheel disc lifting hook (5); the lock catch (1) is connected with three steel wire rope lassos I (2); the first steel wire rope noose (2) is connected with the second steel wire rope noose (4) through the adjusting part (3); the end part of the second steel wire rope lasso (4) is connected with a wheel disc lifting hook (5);

the wheel disc lifting hook (5) comprises a hook handle (51) and a hook body (52); the hook handle (51) and the hook body (52) are integrally formed, and the top of the hook handle (51) is provided with a connecting hole connected with a steel wire rope noose.

2. The impeller red jacket hoisting tool according to claim 1, characterized in that: the adjusting piece (3) is a lock screw, and comprises a left-handed screw (31), a closed screw (32) and a right-handed screw (33); a cavity for accommodating the left-handed screw (31) and the right-handed screw (33) is arranged in the closed turn buckle (32), and a thread opening matched with the left-handed screw (31) and the right-handed screw (33) is formed in the top of the cavity; lifting lugs are arranged at the outer end parts of the left-handed screw (31) and the right-handed screw (33) and are used for being connected with a steel wire rope noose.

3. The impeller red jacket hoisting tool according to claim 1, characterized in that: the included angle between the hook handle (51) and the hook body (52) is 75-65 degrees.

4. The impeller red jacket hoisting tool according to claim 1, characterized in that: a red copper backing plate (6) is arranged on the inner side of the hook body (52); the red copper backing plate (6) is fixed on the hook body (52) through screws.