CN112517996A - Vertical hydraulic generator rotor yoke dovetail groove trimming device - Google Patents
Vertical hydraulic generator rotor yoke dovetail groove trimming device Download PDFInfo
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- CN112517996A CN112517996A CN202011341540.8A CN202011341540A CN112517996A CN 112517996 A CN112517996 A CN 112517996A CN 202011341540 A CN202011341540 A CN 202011341540A CN 112517996 A CN112517996 A CN 112517996A
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- Prior art keywords
- horizontal
- dovetail groove
- vertical
- generator rotor
- hydraulic generator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
Abstract
The invention provides a vertical hydraulic generator rotor magnet yoke dovetail groove trimming device which comprises a base and is characterized in that a left stand column and a right stand column are fixed on the base, upper cross beams are arranged at the tops of the left stand column and the right stand column, an operating platform is arranged between the left stand column and the right stand column in a sliding mode through a lifting mechanism, and a plane milling cutter disc is arranged on the operating platform through a moving mechanism. Drive operation platform through elevating system and go up and down, satisfy not co-altitude generator rotor yoke dovetail groove and maintain, rethread moving mechanism drives plane milling cutter dish horizontal migration, satisfy different positions dovetail groove and maintain, rethread plane milling cutter dish's milling cutter is in rotatory, feed by the feed mechanism control of Y direction, satisfy different degree of depth dovetail groove and maintain, improve work efficiency greatly, reduce intensity of labour, protect processingquality, shorten hydroelectric set repair time, ensure normal electricity generation, supply power.
Description
Background
The invention relates to the field of installation and maintenance of hydraulic generators, and is applied to machining of a vertical hydraulic generator rotor yoke.
The main function of the generator rotor yoke is to form a magnetic circuit, to generate rotational inertia and to fix the magnetic poles. At present, the diameter of a magnetic yoke of a rotor of a large vertical hydraulic generator can reach more than 10 meters, and the height of the magnetic yoke can reach more than 4 meters. The magnetic yoke with the diameter larger than 4 meters is formed by overlapping sector punching sheets with the thickness of 3-5 millimeters in a staggered mode into a whole circle and is fastened into a whole by an upper pressing plate, a lower pressing plate and a tensioning screw rod. The inner circle of the magnetic yoke is fixed on the rotor bracket through a magnetic yoke key, and the outer circle of the magnetic yoke is provided with a dovetail groove for fixing a magnetic pole. In the operation process of the unit, the yoke punching sheets are subjected to relative displacement under the influence of factors such as centrifugal force, torque and temperature change, so that the yoke punching sheets are dislocated. In order to improve the flatness of the two side surfaces of the dovetail groove, the magnet yoke dovetail groove needs to be repaired. However, because the size and the weight of the rotor of the large vertical hydraulic generator exceed the transportation limit, the rotor cannot be processed in a factory and only can be processed on site, and the magnetic yoke punching sheet is made of high-strength low-alloy steel, the workload of the manual grinding and trimming is very large, and the working efficiency is low, so that the processing device capable of trimming the flatness of the dovetail groove rapidly and in a high quality mode is necessary to be researched and developed.
Disclosure of Invention
The invention provides a vertical hydraulic generator rotor magnet yoke dovetail groove trimming device, which is used for efficiently, quickly and high-quality trimming a magnet yoke dovetail groove of a large vertical hydraulic generator rotor, improving the flatness of two side surfaces of the dovetail groove, lifting out a generator rotor during the unit maintenance period, and performing flatness treatment on a dislocation part of the magnet yoke dovetail groove after removing a rotor magnetic pole and an accessory, so as to overcome the defects of large workload, low efficiency, long unit maintenance period, influence on power supply and the like caused by manual trimming in the prior art.
The invention is realized by the following technical scheme: the utility model provides a vertical hydraulic generator rotor yoke dovetail groove trimming device, the on-line screen storage device comprises a base, be fixed with on the base of its characterized in that a left side, two stands on the right side, a left side, two stand tops on the right side are equipped with the entablature, a left side, it is equipped with operation platform to slide through elevating system between two stands on the right side, operation platform is last to be equipped with the plane milling cutter dish through moving mechanism, so that drive operation platform through elevating system and go up and down, satisfy not co-altitude generator rotor yoke dovetail groove and maintain, rethread moving mechanism drives plane milling cutter dish horizontal migration, satisfy different positions dovetail groove and maintain.
The lifting mechanism comprises front sliding rails and front sliding blocks, the front sliding blocks are respectively fixed on the front faces of the left stand column and the right stand column, the inner sliding rails and the inner sliding blocks are respectively fixed on the inner side faces of the left stand column and the right stand column in opposite directions, the front sliding blocks are respectively fixed on the left side and the right side of the front end plate of the operation platform, the inner sliding blocks are respectively fixed on the left side plate and the right side plate of the rear end of the operation platform, vertical screw sleeves are arranged on the operation platform, vertical screw rods are connected in the vertical screw sleeves in a screwed mode, the upper ends and the lower ends of the vertical screw rods are respectively fixed on the corresponding stand columns through upper and lower belt seat bearings, and the upper ends or the lower ends of the vertical screw rods are connected with the power machine so that the operation platform is driven by the power machine.
The moving mechanism comprises two horizontal sliding rails which are symmetrically arranged in the X direction of the operating platform at intervals and horizontal sliding blocks arranged on the two horizontal sliding rails, the horizontal sliding blocks are fixed on the horizontal mounting plate, a horizontal threaded sleeve is arranged in the middle of the horizontal mounting plate, a horizontal screw parallel to the horizontal sliding rails is screwed in the horizontal threaded sleeve, two ends of the horizontal screw are fixed on the operating platform through bearings with seats respectively, one end of the horizontal screw is connected with a hand wheel, and a plane milling cutter disc is arranged on the horizontal mounting plate, so that after the hand wheel is operated to rotate the horizontal screw, the horizontal threaded sleeve and the horizontal mounting plate are driven to reciprocate in the X direction along the horizontal sliding.
The left and right two stand columns are all set as hollow stand columns, a balance mechanism is arranged between the left and right two stand columns and the operation platform, the balance mechanism comprises a left pulley block and a right pulley block which are arranged on the upper cross beam and positioned above the left and right two stand columns, a left cable rope and a right cable rope are respectively arranged on the left pulley block and the right pulley block, the front ends of the left cable rope and the right cable rope are respectively fixed on the left side and the right side of the front end plate of the operation platform, the rear ends of the left cable rope and the right cable rope are respectively connected with a balance weight, and the balance weight is arranged in the corresponding hollow stand column so as to keep balance through the balance mechanism.
The plane milling cutter disc is conventional equipment, and the milling cutter of the plane milling cutter disc is controlled by a feeding mechanism in the Y direction to feed while rotating, so that the requirements of different depth dovetail groove trimming are met.
The base is a rectangular base, four corners of the base are respectively hinged with an auxiliary supporting arm through a hinge shaft, the outer end of the auxiliary supporting arm is provided with a supporting leg, and the supporting leg is in threaded connection with the auxiliary supporting arm through a screw rod and used for adjusting the height of the supporting leg and protecting the levelness of the base.
The upper beam is provided with a connecting horizontal plate on the front side, the horizontal plate is provided with a through hole, and a bolt and a nut are arranged in the through hole so as to be connected and fixed with a vertical hydraulic generator rotor magnetic yoke and further finish the finishing of the vertical hydraulic generator rotor magnetic yoke dovetail groove.
The invention has the following advantages and effects: adopt above-mentioned technical scheme, can conveniently drive operation platform through elevating system and go up and down, satisfy not co-altitude generator rotor yoke dovetail groove and maintain, rethread moving mechanism drives plane milling cutter dish horizontal migration, satisfy different positions dovetail groove and maintain, rethread plane milling cutter dish's milling cutter is in rotatory, by the feed mechanism control of Y direction feed, satisfy different degree of depth dovetail groove and maintain, realize the mechanized of vertical hydraulic generator rotor yoke dovetail groove and maintain, greatly improve work efficiency, reduce intensity of labour, protect the processingquality, shorten hydroelectric generating set maintenance time, ensure normal electricity generation, the power supply.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a view B-B of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a view of the base structure of FIG. 1;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is an enlarged view of portion I of FIG. 1;
fig. 9 is an enlarged view of section ii in fig. 1.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The invention provides a vertical hydraulic generator rotor magnet yoke dovetail groove trimming device, which comprises a base 1, wherein a left upright post 11 and a right upright post 12 are fixed on the base 1, the tops of the left upright post 11 and the right upright post 13 are provided with an upper cross beam 13, an operating platform 4 is arranged between the left upright post 11 and the right upright post 12 through a lifting mechanism 2 in a sliding manner, and a plane milling cutter disc 5 is arranged on the operating platform 4 through a moving mechanism 6, so that the lifting mechanism 2 drives the operating platform 4 to ascend or descend, thereby satisfying the requirements of trimming dovetail grooves of generator rotor magnet yokes at different heights, and then the moving mechanism 6 drives the plane milling cutter disc 5 to horizontally move, thereby satisfying the requirements of trimming dovetail grooves at different positions;
the lifting mechanism 2 comprises a front slide rail 21 and a front slide block 211, wherein the front slide rail 21 is respectively fixed on the front surfaces of the left upright post 11 and the right upright post 12, the front slide block 211 is respectively fixed on the left side and the right side of a front end plate of the operation platform 4, the inner slide block 22 is respectively fixed on the inner side surfaces of the left upright post and the right upright post in opposite directions, the inner slide block 221 is respectively fixed on the left side and the right side of the rear end plate of the operation platform 4, the operation platform 4 is provided with a vertical screw sleeve 231, the vertical screw sleeve 231 is internally screwed with a vertical screw 23, the upper end and the lower end of the vertical screw 23 are respectively fixed on the left upright post 11 through an upper bearing with a seat and a lower bearing with a seat 232 and a lower bearing with a seat, and the upper end of the vertical screw 23 is connected with a power machine 24, namely a motor, so that the operation platform 4 is driven by the vertical;
the moving mechanism 6 comprises two horizontal sliding rails 61 arranged in the X direction of the operating platform 4 symmetrically and at intervals and horizontal sliding blocks 611 arranged on the two horizontal sliding rails 61, the horizontal sliding blocks 611 are fixed on the horizontal mounting plate 51, a horizontal threaded sleeve 621 is arranged in the middle of the horizontal mounting plate 51, a horizontal screw 62 parallel to the horizontal sliding rails 61 is screwed in the horizontal threaded sleeve 621, two ends of the horizontal screw 621 are respectively fixed on the operating platform 4 through bearings with seats, a hand wheel 622 is connected to the right end of the horizontal screw 62, and a plane milling cutter disc 5 is arranged on the horizontal mounting plate 51, so that after the hand wheel 622 is operated to rotate the horizontal screw 62, the horizontal threaded sleeve 621 and the horizontal mounting plate 51 are driven to reciprocate in the X direction along the horizontal sliding;
the left and right upright posts 11 and 12 are both hollow upright posts, a balance mechanism 3 is arranged between the left and right upright posts 11 and 12 and the operating platform 4 at an angle of 30 degrees, the balance mechanism 3 comprises a left pulley block 31 and a right pulley block 31 which are arranged on an upper cross beam 13 and are positioned above the left and right upright posts 11 and 12, and a left cable 32 and a right cable 32 which are respectively arranged on the left pulley block 31 and the right pulley block 31, the front ends of the left cable 32 and the right cable 32 are respectively fixed on the left side and the right side of a front end plate of the operating platform 4, the rear ends of the left cable 32 and the right cable 32 are respectively connected with a counterweight 33, and the counterweight 33 is arranged in the corresponding hollow upright posts so as to keep balance through the balance mechanism 3 when the operating;
the plane milling cutter disc 5 is conventional equipment, and a milling cutter 52 of the plane milling cutter disc is controlled to feed by a feeding mechanism in the Y direction while rotating, so that the requirements of finishing dovetail grooves at different depths are met;
the base 1 is a rectangular base, four corners of the base are respectively hinged with an auxiliary supporting arm 15 through a hinge shaft 14, a supporting leg 17 is arranged at the outer end of the auxiliary supporting arm 15, and the supporting leg 17 is in threaded connection with the auxiliary supporting arm 15 through a screw 16 and used for adjusting the height of the supporting leg 17 and protecting the levelness of the base 1;
the front side of the upper cross beam 13 is provided with a connecting horizontal plate 131, the horizontal plate 131 is provided with a through hole, and a bolt and a nut 132 are arranged in the through hole so as to be connected and fixed with a vertical hydraulic generator rotor magnetic yoke, thereby finishing the dovetail groove of the vertical hydraulic generator rotor magnetic yoke.
When in work: the invention is moved to the side of the vertical hydraulic generator rotor magnetic yoke, the horizontal plate 131 and the rotor magnetic yoke are fixed by the bolt and the nut 132, the upright posts 11 and 12 and the vertical hydraulic generator rotor magnetic yoke are fixed by the bolt 111, the operator enters the operation platform 4, the power machine 24 drives the screw 23 to rotate, the vertical screw sleeve 231 and the operation platform 4 rise or fall to the height of the vertical hydraulic generator rotor magnetic yoke to be processed along the front slide rail 21 and the inner slide rail 22, the balance of the operation platform 4 is ensured under the action of the cable 32 and the counterweight 33 of the balance mechanism 3, the operator controls the hand wheel 622 to rotate the horizontal screw 62, and then drives the horizontal screw sleeve 621, the horizontal mounting plate 51 and the plane milling cutter head 5 thereon to move to the position of the vertical hydraulic generator rotor magnetic yoke to be processed along the horizontal slide rail 61 in the X direction, then, the operator operates the existing plane milling cutter disc 5 again, so that the milling cutter 52 is controlled by the feeding mechanism in the Y direction to feed while rotating, the depth trimming of the dovetail groove is met, the high position and the position are changed in this way, and the trimming of the dovetail groove of the vertical hydraulic generator rotor yoke is realized.
Claims (6)
1. The utility model provides a vertical hydraulic generator rotor yoke dovetail groove trimming device, includes the base, is fixed with two left and right stands on its characterized in that base, and two left and right stand tops are equipped with the entablature, slide through elevating system between two left and right stands and be equipped with operation platform, are equipped with the plane milling cutter dish through moving mechanism on the operation platform.
2. The vertical hydraulic generator rotor yoke dovetail groove trimming device according to claim 1, wherein the lifting mechanism comprises front sliding rails fixed on front surfaces of the left and right two vertical posts and front sliding blocks thereon, and inner sliding rails fixed on inner side surfaces of the left and right two vertical posts and inner sliding blocks thereon, the front sliding blocks are fixed on left and right sides of a front end plate of the operation platform, the inner sliding blocks are fixed on left and right side plates of a rear end of the operation platform, the operation platform is provided with vertical screw sleeves, vertical screw rods are screwed in the vertical screw sleeves, upper and lower ends of the vertical screw rods are fixed on the corresponding vertical posts through upper and lower belt seat bearings, respectively, and upper or lower ends of the vertical screw rods are connected with the power machine.
3. The vertical hydraulic generator rotor yoke dovetail groove trimming device according to claim 1, wherein the moving mechanism comprises two horizontal sliding rails symmetrically arranged in the X direction of the operation platform at intervals and horizontal sliding blocks arranged thereon, the horizontal sliding blocks are fixed on a horizontal mounting plate, a horizontal screw sleeve is arranged in the middle of the horizontal mounting plate, a horizontal screw rod parallel to the horizontal sliding rails is screwed in the horizontal screw sleeve, two ends of the horizontal screw rod are respectively fixed on the operation platform through bearings with seats, one end of the horizontal screw rod is connected with a hand wheel, and a plane milling cutter disc is arranged on the horizontal mounting plate.
4. The vertical hydraulic generator rotor yoke dovetail groove trimming device according to claim 1, wherein the left and right two vertical posts are both hollow vertical posts, a balancing mechanism is provided between the left and right two vertical posts and the operating platform, the balancing mechanism comprises a left pulley block and a right pulley block which are provided on the upper beam and located above the left and right two vertical posts, a left cable and a right cable which are respectively provided on the left pulley block and the right pulley block, the front ends of the left cable and the right cable are respectively fixed on the left side and the right side of the front end plate of the operating platform, the rear ends of the left cable and the right cable are respectively connected with a counterweight, and the counterweight is arranged in the corresponding hollow vertical post.
5. The vertical hydraulic generator rotor yoke dovetail groove trimming device according to claim 1, wherein the base is a rectangular base, four corners of the rectangular base are respectively hinged with an auxiliary supporting arm through a hinge shaft, the outer end of the auxiliary supporting arm is provided with a supporting leg, and the supporting leg is in threaded connection with the auxiliary supporting arm through a screw.
6. The vertical hydraulic generator rotor yoke dovetail groove trimming device according to claim 1, wherein the front side of the upper beam is provided with a connecting horizontal plate, the horizontal plate is provided with a through hole, and a bolt and a nut are arranged in the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341540.8A CN112517996A (en) | 2020-11-25 | 2020-11-25 | Vertical hydraulic generator rotor yoke dovetail groove trimming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341540.8A CN112517996A (en) | 2020-11-25 | 2020-11-25 | Vertical hydraulic generator rotor yoke dovetail groove trimming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112517996A true CN112517996A (en) | 2021-03-19 |
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ID=74993543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011341540.8A Pending CN112517996A (en) | 2020-11-25 | 2020-11-25 | Vertical hydraulic generator rotor yoke dovetail groove trimming device |
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| CN (1) | CN112517996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545186A (en) * | 2023-04-25 | 2023-08-04 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
-
2020
- 2020-11-25 CN CN202011341540.8A patent/CN112517996A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545186A (en) * | 2023-04-25 | 2023-08-04 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
| CN116545186B (en) * | 2023-04-25 | 2024-03-29 | 中国长江电力股份有限公司 | Annular sliding rail car operation vehicle for overhauling generator stator |
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