CN-224218257-U - Special frock of generator rotor pump dress

CN224218257UCN 224218257 UCN224218257 UCN 224218257UCN-224218257-U

Abstract

The utility model belongs to the technical field of equipment engineering, and particularly relates to a special tool for drawing and installing a generator rotor. The special tool comprises an upper steel frame platform and a lower steel frame base, wherein 4 symmetrically distributed hydraulic jacks are arranged between the upper steel frame platform and the lower steel frame base. The middle point of one end of the upper layer steel frame platform is vertically provided with a drawing hanging lug support, the upper part of the drawing hanging lug support is vertically fixed with a drawing hanging lug, and the center of the drawing hanging lug and the center of the rotor are positioned on the same horizontal line. The two sides of the upper layer steel frame platform are respectively and fixedly provided with a pull-hanging lug support, the clockwise included angle between the pull-hanging lug support and the horizontal plane is 30-45 degrees, the other end of the pull-hanging lug support is vertically fixed with a pull-hanging lug, and the center of the pull-hanging lug and the center of the rotor are positioned on the same horizontal line. The special tool can safely, reliably and quickly pump and assemble the generator rotor, ensure maintenance quality and improve working efficiency.

Inventors

YANG CHAO
QIN JUNQIANG
WEI CHUANBO

Assignees

山东钢铁股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250321

Claims (6)

1. The special tool for the drawing and assembling of the generator rotor is characterized by comprising an upper steel frame platform and a lower steel frame base, wherein 4 symmetrically distributed hydraulic jacks are arranged between the upper steel frame platform and the lower steel frame base; A drawing hanger bracket is vertically arranged at the middle point of one end of the upper layer steel frame platform, a drawing hanger is vertically fixed at the upper part of the drawing hanger bracket, and the center of the drawing hanger and the center of the rotor are positioned on the same horizontal line; The two sides of the upper layer steel frame platform are respectively and fixedly provided with a pull-hanging lug support, the clockwise included angle between the pull-hanging lug support and the horizontal plane is 30-45 degrees, the other end of the pull-hanging lug support is vertically fixed with a pull-hanging lug, and the center of the pull-hanging lug and the center of the rotor are positioned on the same horizontal line.
2. The special tool for drawing and installing the generator rotor according to claim 1, wherein the upper layer steel frame platform and the lower layer steel frame base are both made of I-steel.
3. The special tool for drawing and installing the generator rotor according to claim 1, wherein the width between two sides of the upper steel frame platform is larger than or equal to the size of the base of the bearing box.
4. The special tool for drawing and installing the generator rotor according to claim 1, wherein the drawing and installing bracket is made of I-steel.
5. The special tool for drawing and installing the generator rotor according to claim 1, wherein the bracket for installing and pulling the hanging lugs is made of I-steel.
6. The special tool for drawing and installing the generator rotor according to claim 1, wherein a fixed supporting piece is additionally arranged between the hanging bracket and the upper layer steel frame platform.

Description

Special frock of generator rotor pump dress Technical Field The utility model belongs to the technical field of equipment engineering, and particularly relates to a special tool for drawing and installing a generator rotor. Background The generator is a device for converting mechanical energy into electric energy, is widely applied to various fields of electric power production, industry, business, household electricity and the like, and becomes an indispensable device in a modern electric power system. The generator operates based on the principle of electromagnetic induction, producing an electric current by movement of a conductor in a magnetic field. The main components of the generator comprise a rotor and a stator, wherein the stator is a fixed part of the generator and comprises an armature winding for cutting magnetic force lines to generate induced electromotive force. The rotor is a rotating part and is a core component of the generator, and the reliability of the rotor directly influences the operation of the whole power generation system. The generator rotor is typically provided with field windings responsible for generating a rotating magnetic field and thus generating electric currents in the stator by electromagnetic induction. The rotor of a generator is typically operated at high rotational speeds, especially for large generators up to thousands of revolutions per minute. Such high rotational speeds require good, precise dynamic balance performance of the rotor to prevent vibration and deformation. The generator can have the problems of loosening or falling off of the balance weight after long-term operation, and needs to be regularly maintained and overhauled to ensure long-term reliable operation, and the rotor needs to be assembled when necessary to complete the replacement of the rotor. The generator rotor extraction is a key step in generator maintenance and overhaul, and is complex to operate and high in technical requirements. The rotor of the generator is thin, long and heavy, adding difficulty and cost to the installation and maintenance of the rotor. In addition, because the rotor is thin and long, the gap between the rotor and the stator is smaller, and when the rotor is assembled into the stator and the rotor is pulled out of the stator in the prior art, the front and rear matching assembly of the two running wheels is adopted, so that the deviation of the upper and lower assembly gap is large and asymmetric, the rotor and the center of the stator are not aligned, abrasion is generated between the stator and the rotor, and insulation damage is further caused. And the rotor and the stator are not coaxial, so that poor dynamic balance of the rotor is caused, large vibration and noise are generated, and a bearing bush and other parts can be damaged when serious, so that the running stability is difficult to ensure. Therefore, a special tool for rotor extraction designed based on the characteristics of the generator rotor is needed. Disclosure of utility model The utility model aims to provide a special tool for the drawing and mounting of a generator rotor, which can safely, reliably and quickly draw and mount the generator rotor, ensure maintenance quality and improve working efficiency. The technical scheme of the utility model is as follows: a special tool for drawing and installing a generator rotor comprises an upper layer steel frame platform and a lower layer steel frame base, wherein 4 symmetrically distributed hydraulic jacks are arranged between the upper layer steel frame platform and the lower layer steel frame base. The 4 hydraulic jacks are welded and fixed with the lower surface of the upper steel frame platform and the upper surface of the lower steel frame base respectively and are used for adjusting the height of the upper steel frame platform, so that the upper surface of the upper steel frame platform and the upper end face of a generator foundation (the generator foundation is a key structure for supporting and fixing a generator) are kept on the same plane. The upper surface of the upper layer steel frame platform can be used as a slide way for drawing and assembling the rotor, lubricating grease can be smeared, friction force is reduced, and the rotor can be conveniently drawn and assembled. A pull-out hanger bracket is vertically arranged at the middle point of one end of the upper layer steel frame platform. The pull hanger bracket is vertically welded on the upper layer steel frame platform, is uniformly stressed and has high bearing force, and can maintain parallel tension. The upper part of the pull hanger bracket is vertically fixed with a pull hanger for hanging a chain block and pulling the generator rotor. The center of the drawing hanging lug and the center of the rotor are positioned on the same horizontal line. The two side surfaces of the upper layer steel frame platform are respectively and fixedly provided with a pull hanging bracket, and the