CN107009134B - Special tool for dismounting magnetic pole winding of large alternating current synchronous motor - Google Patents
Special tool for dismounting magnetic pole winding of large alternating current synchronous motor Download PDFInfo
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- CN107009134B CN107009134B CN201710364950.6A CN201710364950A CN107009134B CN 107009134 B CN107009134 B CN 107009134B CN 201710364950 A CN201710364950 A CN 201710364950A CN 107009134 B CN107009134 B CN 107009134B
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- magnetic pole
- hydraulic cylinder
- supporting leg
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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Abstract
The special tool for dismounting the pole winding of the large alternating current synchronous motor comprises a bracket, a connecting plate, a translation carrier roller, a hydraulic oil cylinder bracket, a hydraulic oil cylinder, supporting legs and the like, wherein the bracket consists of a horizontal supporting plate and two side plates; the connecting plate is an arc-shaped plate and is fixed at the front end of the bracket; the hydraulic cylinder is fixed at the rear of the bracket through a hydraulic cylinder bracket; the piston rod of the hydraulic cylinder is connected with a traction frame at the front end of the traction steel belt through a traction rope. The device has the advantages of simple structure, reasonable design, easy processing and manufacturing, safe and reliable use, greatly reduced labor intensity, reduced labor intensity and improved working efficiency; the magnetic pole dismounting efficiency can be improved by about 3 times by using the device; the personnel safety and the equipment safety in the operation process are greatly improved, the direct loss or the indirect loss can be greatly reduced, the whole construction process is greatly changed, and valuable time is won for mine safety production.
Description
Technical Field
The invention relates to a tool used for replacing a pole winding of a large alternating current synchronous motor on site.
Background
After the magnetic pole winding of the large alternating current synchronous motor is damaged, the old magnetic pole winding needs to be removed firstly, then a new magnetic pole winding is installed, and the original magnetic pole winding removing method comprises the following steps:
tool material: 3 hoisting cranes, two tons of chain blocks (chain blocks), 10 meters of palm ropes, 2 square meters of protective highland barley paper, 2 square meters of asbestos mats, one steel wire rope sleeve with the diameter of 18.5mm, two steel wire ropes with the diameter of 10.8mm and one nylon sling with the diameter of 5 meters.
1. Firstly, removing two fixing screws on a damaged magnetic pole winding and a stator winding, and separating a magnetic pole winding iron core from a rotor;
2. a traction point is designed on the wall, and two tons of chain blocks are hung on the traction point, so that preparation is made for traction of the magnetic pole winding;
3. the nylon suspender is used for encircling three sides of the magnetic pole winding and then connecting the magnetic pole winding with the prepared traction chain block;
4. slowly pulling the magnetic pole winding, and after the magnetic pole winding is pulled out of about one third of the position, hanging the magnetic pole winding by using a crane truss car to prevent sudden slipping and hurting people;
5. in order to prevent the pole winding from suddenly tilting after the slot is formed, two steel wire ropes with jackets are needed to be hung in advance for correction preparation;
6. after the magnetic pole winding is completely out of the groove, the angle of the magnetic pole (horizontal position) is slowly adjusted, and the truss is used for lifting the magnetic pole winding to a position which does not influence construction.
The original magnetic pole winding installation method comprises the following steps:
the tool material is used for dismounting the magnetic pole winding.
1. Firstly, lifting the magnetic pole winding to be replaced by a crane slowly;
2. adjusting the installation angle of the magnetic poles by using 2 steel wire ropes with jackets;
3. slowly pushing the magnetic pole winding into the rotor groove;
4. pulling in the palm rope or nylon sling in the opposite direction to the original pulling direction;
5. after approaching in place, the correct position is adjusted by using a crowbar through two screw holes of the motor without forceful force;
6. and fastening the magnetic pole winding and the motor rotor core together by using a fastening bolt, and completing the replacement work.
Therefore, the replacement of the pole windings of the large ac synchronous motor is very troublesome and lacks a special dismounting tool. Once the magnetic pole winding is damaged, the original construction process is complex, the replacement process links are more, the construction risk factors are more, the replacement time is longer, the existing construction scheme needs about 10 hours to replace one magnetic pole winding, the labor intensity is extremely high, and particularly, the work difficulty of replacing the magnetic pole on site is higher, mainly involving the following aspects:
1. the magnetic pole winding is difficult to pull, and is influenced by a traction fulcrum in the process of pulling the magnetic pole winding, so that larger traction resistance is generated, and the process of disassembling the magnetic pole winding is longer;
2. the magnetic pole winding is difficult to install, namely the bottom of the magnetic pole iron core and the groove of the magnetic pole base of the rotor are required to be relatively balanced in the installation process of the magnetic pole winding, and the magnetic pole iron core is easy to deflect during installation, so that the approaching angle can be achieved only by correcting for a plurality of times; secondly, in the process of propelling the magnetic pole winding, the left and right directions are difficult to determine, and huge resistance is added to installation; thirdly, the magnetic pole iron core is easy to be out of the groove, and because the gap between the magnetic pole iron core and a rotor iron core groove slideway is only 8mm, the operation is slightly careless, the magnetic pole winding iron core is out of the groove, the previous work is abandoned, and the reinstallation is needed;
3. the risk factors are many, and the safety of personnel and equipment are mainly reflected, and particularly, in the process of dismantling the magnetic pole winding, the balance is difficult to achieve only by personnel to master because the weight of the winding is about 550 Kg. In addition, the safety of equipment is seriously threatened in the lifting process, once the equipment is obliquely overturned, the stator coil and the rotor coil can be seriously damaged, the production is seriously affected, and the body of an operator can be seriously injured;
4. the process is complex, the existing construction scheme and the existing construction scheme are complex, the tools are complex, the number of users is large, and meanwhile, the dismantling and installing quality is seriously affected;
5. the labor intensity is high, the existing dismantling and installing process has no good construction scheme, each working link is completed by the force of people, the efficiency is low, and the replacement of one magnetic pole winding can be completed only by about 15 people in a cooperative operation for 10 hours, so that the labor intensity of staff is extremely high.
Disclosure of Invention
The invention aims to design a special tool for dismounting and mounting a pole winding of a large alternating current synchronous motor so as to optimize a construction process, reduce labor intensity, improve working efficiency and construction quality, provide safety guarantee, enable the whole construction flow to be changed greatly and gain valuable time for mine safety production.
The technical scheme adopted for achieving the aim of the invention is that the device comprises a bracket, a connecting plate, a row of translation carrier rollers, a hydraulic cylinder and supporting legs, wherein the bracket consists of a supporting plate and two side plates, the supporting plate is horizontally connected to the two side plates, the row of translation carrier rollers is arranged above the supporting plate, and two ends of the support plate are fixed at the upper parts of the two side plates; the connecting plate is an arc-shaped plate, the upper surface of the connecting plate is provided with a bolt hole corresponding to the bolt hole on the motor rotor core, and the connecting plate is fixed at the front end of the bracket; the hydraulic cylinder is horizontally arranged behind the bracket and fixed on the hydraulic cylinder bracket, and a piston rod of the hydraulic cylinder is connected with a traction rope; the supporting legs are adjustable in height, and the top ends of the supporting legs are connected below the supporting plates at the rear parts of the brackets.
And the inner sides of the upper edges of the two side plates of the bracket are respectively provided with an anti-side sliding plate made of high-strength wear-resistant plastic plates.
The traction rope is a traction ring chain, one end of the traction ring chain is connected with a U-shaped clamp at the front end of a piston rod of the hydraulic cylinder through a distribution shaft, and the end part of one end of the traction ring chain is in a hook shape.
The supporting leg is composed of two sections, and the two sections are connected by threads.
The bottom end of the supporting leg is connected with a movable supporting leg, the movable supporting leg consists of a supporting leg and a movable pin, and the supporting leg is connected with the bottom end of the supporting leg through a U-shaped clamp and the movable pin on the supporting leg.
The control of the hydraulic cylinder can be designed by the same person, which belongs to the conventional technology and is not described in detail here.
The invention has the positive effects that: the device has the advantages of simple structure, reasonable design, easy processing and manufacturing, convenient maintenance and storage, safe and reliable use, greatly reduced labor intensity, reduced labor intensity and improved working efficiency; the original construction method is quite complex and dangerous, the efficiency is low, the replacement of one magnetic pole winding can be completed only by about 15 persons and 10 hours of cooperative operation, the replacement of 2 magnetic pole windings can be completed only by 6 persons and 6.5 hours of cooperative operation, and the magnetic pole dismounting efficiency is improved by about 3 times; the personnel safety and the equipment safety in the operation process are greatly improved, the direct loss or the indirect loss can be greatly reduced, the whole construction process is greatly changed, and valuable time is won for mine safety production.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in the use state; FIG. 2 is a top view of FIG. 1; FIG. 3 is a left side schematic view of the present invention; fig. 4 is a schematic diagram of an adjustable pushrod.
Detailed Description
The invention is shown in figures 1, 2 and 3, and comprises a bracket, a connecting plate 9, translation carrier rollers 3, a hydraulic cylinder bracket 1, a hydraulic cylinder 2, a traction steel belt 11, a traction pull frame 10 and supporting legs 14, wherein the bracket comprises a supporting plate 8 and two side plates 4, the supporting plate 8 and the two side plates 4 are all formed by cutting steel plates, the supporting plate 8 is horizontally welded on the two side plates 4, four translation carrier rollers 3 are arranged above the supporting plate 8, and two ends of the support are fixed at the upper parts of the two side plates 4; in order to prevent the magnetic pole winding 12 from sideslip abrasion, an anti-side sliding plate 5 is respectively arranged on the inner sides of the upper edges of the two side plates 4 of the bracket, the anti-side sliding plate 5 is made of a high-strength wear-resistant plastic plate, and the main purpose of the high-strength wear-resistant plastic is that the damage to the magnetic pole winding in the traction process can be effectively prevented, and the upper edge of the anti-side sliding plate 5 is higher than the plane of the translation carrier roller 3 by about 6mm after being arranged; the connecting plate 9 is an arc-shaped plate, 5 bolt holes 17 corresponding to the bolt holes on the motor rotor core are arranged on the connecting plate, the connecting plate is fixed at the front end of the bracket, and the connecting plate is welded at the front end parts of the two side plates 4 (as shown in figure 3); the hydraulic cylinder support 1 is arranged at the rear of the bracket, the hydraulic cylinder support 1 is fixedly arranged on the supporting plate 8 at the rear of the bracket through the support fixing frame 13, the hydraulic cylinder 2 is horizontally arranged, and the base of the hydraulic cylinder 2 is fixedly arranged on the hydraulic cylinder support 1; the traction steel belt 11 is also arranged, and two ends of the traction steel belt 11 are connected to a traction frame 10 through movable pins (shown in figures 1 and 2); when the magnetic pole winding 12 is pulled outwards, as the extension length of the hydraulic cylinder piston rod 6 is limited, a traction ring chain 7 is designed to compensate the length requirement, the hydraulic cylinder piston rod 6 is connected with a traction pull frame 10 at the front end of a traction steel belt 11 through the traction ring chain 7, a ring hole at one end of the traction ring chain 7 is connected with a U-shaped clamp at the front end of the hydraulic cylinder piston rod 6 through a pin shaft, the end part at the other end is in a hook shape, and a hook on the traction ring chain 7 can hook a traction hole on the traction pull frame 10 during traction, so that the length can be adjusted according to the requirement by changing the ring hole on the traction ring chain 7; because the height of the pole winding 12 is not a fixed value in each disassembly and assembly, the supporting leg 14 consists of two sections, the two sections are connected by screw threads, the lower section is rotated, and the height of the supporting leg 14 can be adjusted; in order to meet the requirements of the magnetic pole windings 12 assembled and disassembled at different angles, the supporting leg 14 is also connected with a movable supporting leg along with the change of the corresponding angle, the bottom end of the supporting leg 14 is connected with a movable supporting leg, the movable supporting leg consists of a supporting leg 15 and a movable pin 16, the supporting leg 15 is connected with the bottom end of the supporting leg 14 through a U-shaped clamp and the movable pin 16 on the supporting leg, and the top end of the supporting leg 14 is welded below the supporting plate 8 at the rear part of the bracket.
The pole winding dismantling process comprises the following steps:
firstly, 5 bolt holes 17 on a bracket connecting plate 9 correspond to bolt holes at the positions of the disassembled magnetic pole windings on a motor rotor core, five connecting bolts are used for fixing the connecting plate 9 on the synchronous motor rotor core, the surface height of a translation carrier roller 3 and the bottom of a rotor core groove are required to be kept horizontal (the precision is within 0.5mm, and the traction and pushing use are mainly facilitated), and the height of a supporting leg 14 is well adjusted. The three sides of the traction steel belt 11 are surrounded by the dismantled magnetic pole windings 12, two ends of the traction pull frame 10 are connected to the traction steel belt 11 through a distribution shaft, the length of the traction ring chain 7 is adjusted, a hook at the front end of the traction ring chain 7 is hooked on a traction hole on the traction pull frame 10, then the hydraulic cylinder 2 is started, the magnetic pole windings 12 are slowly pulled out of a rotor core of a motor and translated onto the translation carrier roller 3, at the moment, the whole weight of the magnetic pole windings 12 is borne by a bracket, and then the magnetic pole windings 12 are lifted to other positions which do not affect construction by lifting equipment.
The magnetic pole winding installation process comprises the following steps:
after the old magnetic pole winding is dismantled, firstly, the new magnetic pole winding is lifted to the translation carrier roller 3 on the bracket by a lifting device, and an auxiliary installation tool is additionally arranged on the translation carrier roller 3 (as shown in figure 4), the adjustable push rod 18 is formed by two sections, the adjustable length is 450mm through threaded connection, and the end part is provided with a threaded hole.
Claims (3)
1. A special tool for disassembling and assembling pole windings of a large alternating current synchronous motor is characterized in that: the device comprises a bracket, a connecting plate, a row of translation carrier rollers, a hydraulic cylinder and supporting legs, wherein the bracket consists of a supporting plate and two side plates, the supporting plate is horizontally connected to the two side plates, the row of translation carrier rollers is arranged above the supporting plate, and two ends of the support plate are fixed on the upper parts of the two side plates; the connecting plate is an arc-shaped plate, the upper surface of the connecting plate is provided with a bolt hole corresponding to the bolt hole on the motor rotor core, and the connecting plate is fixed at the front end of the bracket; the hydraulic cylinder is horizontally arranged behind the bracket and fixed on the hydraulic cylinder bracket, and a piston rod of the hydraulic cylinder is connected with a traction rope or an adjustable push rod; the height of the supporting legs is adjustable, and the top ends of the supporting legs are connected below the supporting plate at the rear part of the bracket; an anti-side sliding plate made of high-strength wear-resistant plastic plates is respectively arranged on the inner sides of the upper edges of the two side plates of the bracket; the traction rope is a traction ring chain, one end of the traction ring chain is connected with a U-shaped clamp at the front end of a piston rod of the hydraulic cylinder through a distribution shaft, and the end part of one end of the traction ring chain is in a hook shape.
2. The special tool for disassembling and assembling a pole winding of a large alternating current synchronous motor according to claim 1, wherein: the supporting leg is composed of two sections, and the two sections are connected by threads.
3. The special tool for disassembling and assembling a pole winding of a large alternating current synchronous motor according to claim 1, wherein: the bottom end of the supporting leg is connected with a movable supporting leg, the movable supporting leg consists of a supporting leg and a movable pin, and the supporting leg is connected with the bottom end of the supporting leg through a U-shaped clamp and the movable pin on the supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364950.6A CN107009134B (en) | 2017-05-22 | 2017-05-22 | Special tool for dismounting magnetic pole winding of large alternating current synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364950.6A CN107009134B (en) | 2017-05-22 | 2017-05-22 | Special tool for dismounting magnetic pole winding of large alternating current synchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107009134A CN107009134A (en) | 2017-08-04 |
| CN107009134B true CN107009134B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710364950.6A Active CN107009134B (en) | 2017-05-22 | 2017-05-22 | Special tool for dismounting magnetic pole winding of large alternating current synchronous motor |
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| Country | Link |
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| CN (1) | CN107009134B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414465B (en) * | 2017-08-29 | 2019-08-16 | 广船国际有限公司 | A kind of unit of axle of ship propellor auxiliary dismounting tooling and its application |
| CN108471201B (en) * | 2018-05-24 | 2023-07-14 | 中国长江电力股份有限公司 | Large-scale generator stator bar pulls out instrument |
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| CN205342382U (en) * | 2016-01-21 | 2016-06-29 | 武汉力地液压设备有限公司 | Large -scale horizontal pneumatic cylinder removes fitting work platform device |
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| CN206747937U (en) * | 2017-05-22 | 2017-12-15 | 永城煤电控股集团有限公司 | Large-scale ac synchronous motor magnetic pole winding tool specially for attaching and detaching |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829115A (en) * | 1996-09-09 | 1998-11-03 | General Electro Mechanical Corp | Apparatus and method for actuating tooling |
| US20030056352A1 (en) * | 2000-12-19 | 2003-03-27 | Mclellan Dale C. | Liner bolt removal tool |
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- 2017-05-22 CN CN201710364950.6A patent/CN107009134B/en active Active
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|---|---|---|---|---|
| US5075959A (en) * | 1990-07-26 | 1991-12-31 | General Electric Company | Generator rotor slot wedge assembly and disassembly fixture |
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| CN200963740Y (en) * | 2006-11-15 | 2007-10-24 | 上海宝钢设备检修有限公司 | Horizontal dismounting device for large-scale oil cylinder |
| CN102355094A (en) * | 2011-10-11 | 2012-02-15 | 南平市南电通用机械有限公司 | Stator coil removing method |
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| CN104868663A (en) * | 2015-06-12 | 2015-08-26 | 中国神华能源股份有限公司 | Method for withdrawing and penetrating through rotor for power generator |
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| CN206099680U (en) * | 2016-10-10 | 2017-04-12 | 中国水利水电第十四工程局有限公司 | Hydroelectric set rotor magnetic pole dismouting specialized tool |
| CN206747937U (en) * | 2017-05-22 | 2017-12-15 | 永城煤电控股集团有限公司 | Large-scale ac synchronous motor magnetic pole winding tool specially for attaching and detaching |
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| CN107009134A (en) | 2017-08-04 |
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