CN101114786A - Hanging method using C-beam piercing core hanging large-scale electric motor and C-beam structure - Google Patents
Hanging method using C-beam piercing core hanging large-scale electric motor and C-beam structure Download PDFInfo
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- CN101114786A CN101114786A CNA2007100593312A CN200710059331A CN101114786A CN 101114786 A CN101114786 A CN 101114786A CN A2007100593312 A CNA2007100593312 A CN A2007100593312A CN 200710059331 A CN200710059331 A CN 200710059331A CN 101114786 A CN101114786 A CN 101114786A
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Abstract
The invention discloses a hoisting method which adopts a C-shaped beam to hoist a large-sized electric motor through a core-piercing way. The invention comprises the steps that: a hoisting rotor is arranged at the front end of an electric motor base and is stabilized through a support; after hoisting a stator, the side axle of the non-transmission end of the rotor protrudes into a stator chamber and is positioned on a support of a base plate; the axial center line of the stator chamber is adjusted to overlap with the axial center line of the rotor; the extended shaft is hoisted and connected through the C-shaped beam in the core-piercing way: the extended shaft is hoisted after being leveled and is penetrated into the stator chamber and is connected with the non-transmission end of the rotor; when the extended shaft protrudes out of the stator, the rotor is positioned on a support frame; the rotor is leveled again and hoisted, and the rotor penetrates into the stator through the control of a crane; when the extended shaft reaches the spatial extreme place, temporarily the rotor is positioned in the stator chamber; then the extended shaft is disassembled through the crane and the rotor is hoisted and core-pierced to a proper place; after the core-piercing of the rotor, the stator and the rotor simultaneously fall to the proper place, and preparation for landing is made; and slowly the stator and the rotor fall on the base plate and a bearing seat respectively.
Description
Technical field
The present invention relates to a kind of hanging method of hanging large-scale electric motor, relate in particular to the hanging method of the metallurgical four roller heavy and medium plate mills of a kind of C of employing ellbeam piercing core hanging with large-size machine.
Background technology
At two main drive motors that metallurgy industry four roller heavy and medium plate mills are used, generally be that the horizontal motor room that is installed in is striden, that is: earlier that motor stator is in place, rotor installs the spreading axle additional then, penetrates the method in the motor stator thorax again.At present, the two main drive motors of four roller heavy and medium plate mills generally are that the horizontal motor room that is installed in is striden.Motor room is striden only has equipment to install and one in overhead traveling crane crane of maintenance, roller motor is preceding (is preceding near milling train) under arrangement is, last roller motor is when the back, just above-mentioned horizontal installation method can not have been adopted, its main cause: the one,, because equipment single-piece weight is big, the fabricating yard is narrow, the driving tonnage is less than the total weight of stator and rotor, and motor can not carry out the punching assembling in addition in the installation site; The 2nd,, owing to blocking of last motor basis, following rotor piercing core hanging can only penetrate motor stator by (milling train side) driving end direction, but factory building width and overhead traveling crane crane dolly extreme position can not satisfy the required space requirement of employing piercing core hanging.Therefore,, can not be directly the rotor of adjunction major axis be penetrated in the motor stator in the thorax less than following this present situation of motor punching dimension limit at present factory building span with the overhead traveling crane crane.
Summary of the invention
In order to overcome existing drawback in the above-mentioned prior art, the invention provides a kind of hanging method of the C of employing ellbeam piercing core hanging large-scale electric motor, this hanging method has solved in the prior art because locus can not take the horizontally-mounted problem of large-size machine inadequately, can be implemented under the condition of factory building span less than following motor punching dimension limit, with the overhead traveling crane crane rotor of adjunction major axis is penetrated in the motor stator in the thorax, thus hanging large-scale electric motor.The present invention can be in the motor foundation pit fast and safely realization the stator and rotor piercing core hangings, and reached the national regulation requirement.
The technical scheme that the present invention adopts the hanging method of C ellbeam piercing core hanging large-scale electric motor to be achieved is that this hanging method step is as follows: lifting preparation: motor and auxiliary that hanging device, C ellbeam, desire are installed are got ready; The lifting rotor is placed into motor basis front end, and firm with supporting; The motor stator of slinging, and rotor non-transmision end side shaft extended in the motor stator thorax, be placed into then on a plurality of strong points of sole plate, adjust thorax longitudinal center line and the axial central lines of rotor in the motor stator; With C ellbeam piercing core hanging spreading axle: lift by crane behind the balancing, the spreading axle is penetrated in the motor stator thorax, and be connected with the non-transmision end of rotor; After treating that the spreading axle passes motor stator, fall to being placed on rotor on the bracing frame; Again leveling, lifting rotor, driving dolly control walking penetrates motor stator with rotor; When the spreading axle arrives the space extreme position, rotor is dropped in the motor stator thorax temporarily; With driving the spreading axle is removed then, the punching of again rotor being sling puts in place; After finishing the rotor punching, motor stator and rotor together drop to the appropriate location; Meanwhile, carry out the preparation of land; Lentamente motor stator, rotor are fallen within on base plate and the bearing pedestal, so far, finished the piercing core hanging work of motor.
The present invention adopts the hanging method of C ellbeam piercing core hanging large-scale electric motor, wherein, in described step 1, get ready: 100t/20t overhead traveling crane crane, balance beam, C ellbeam, bracing frame, jack, steel wire rope, jack peace parallels, and the forward and backward bearing pedestal of motor that will install, adjust carries out mark, is placed on a side of electric baseboard after the dismounting.4 contour strong points that a plurality of strong points in the described step 3 are made up of jack peace parallels.Motor is transferred to when penetrating motor stator in the described step 5, strict control motor stator and gap between rotor, its gap value is the 1-18 millimeter, and up and down, front and back and about evenly equate, and keep rotor level and steadily with balance beam.In the described step 7, after finishing the rotor punching, utilize jack and jack with the forward and backward bearing pedestal installation in position levelling of motor, use jack peace parallels whereabouts motor stator on 4 strong points again, travelling crane hook whereabouts rotor, both fall simultaneously, and control rate equates, bump preventing; Preparation comprises that the mating surface to base and motor stator footing cleans before the described land, is coated with lubricating oil at the screw thread place behind the inspection bolt, and is ready to the adjustment pad of motor stator base.
Involved C ellbeam is hollow uiform section box structure in the hanging method of the present invention, described C ellbeam inboard is provided with gusset, distance between the upper and lower support arm of the described C shape fine strain of millet inboard is slightly larger than the maximum radial dimension on motor stator top, and the length of the upper and lower support arm of described C ellbeam is equal to or slightly less than the axial dimension of spreading axle endoporus.
C ellbeam of the present invention, wherein, the gusset that is positioned at described C shape fine strain of millet upper branch arm inboard is provided with arc groove.
The hanging method that the present invention adopts C ellbeam piercing core hanging large-scale electric motor compared with prior art, its beneficial effect is: because the present invention is on the basis of the large-size machine piercing core hanging method of prior art, changed the punching order of stator and rotor, that is: adopt elder generation that rotor is put on motor base one end, then motor stator is enclosed within the non-transmision end axle of rotor, utilize again the C ellbeam with the spreading axle in the motor stator thorax, and with rotor non-transmision end axle be connected the punching method.Thereby solved preferably because factory building width and overhead crane dolly extreme position do not reach the problem of motor piercing core hanging requisite space position dimension.Simultaneously owing to adopted bracing frame, further guaranteed in the correct and punching process of rotor position of center line firmly, make whole punching process safe and reliable, and can satisfy existing country and test of the requirement of assessment of bids standard the motor installation accuracy.The present invention has good economic benefit and social benefit for the large-size machine piercing core hanging provides a kind of practicable method.
Description of drawings
Fig. 1 is the state diagram that the present invention utilizes balance beam lifting rotor when adopting C ellbeam piercing core hanging large-scale electric motor;
Fig. 2-the 1st, the present invention utilize the state diagram of C ellbeam lifting spreading axle when adopting C ellbeam piercing core hanging large-scale electric motor;
Fig. 2-the 2nd, the partial enlarged drawing of the lifting of C ellbeam shown in Fig. 2-1 spreading axle;
Fig. 3-the 1st, the front view of C ellbeam;
Fig. 3-the 2nd, the end view of C ellbeam shown in Fig. 3-1;
Fig. 3-the 3rd, the vertical view of C ellbeam shown in Fig. 3-1;
Fig. 3-the 4th, the A-A of C ellbeam shown in Fig. 3-1 cross section enlarged drawing;
Fig. 4 is the flow chart that the present invention adopts C ellbeam piercing core hanging large-scale electric motor.
Be the explanation of main Reference numeral in the Figure of description of the present invention below:
1---motor stator 2---rotor 3---spreading axle
4---C ellbeam 5---balance beam 6---first bracing frames
7---second bracing frame 8---jack 9---steel wire ropes
10---driving 11---motor basis 12---space extreme positions
13---rotor axial center line 14---insertion rotor direction 15---jack
Thorax longitudinal center line in 16---plain cushion iron 17---stator
Embodiment
Adopt the hanging method of C ellbeam piercing core hanging large-scale electric motor to describe in further detail below in conjunction with accompanying drawing to the present invention.
Involved C ellbeam in the hanging method of the present invention, shown in Fig. 3-1, Fig. 3-2, Fig. 3-3 and Fig. 3-4, this C ellbeam constitutes hollow uiform section box structure by the steel plate welding, the inboard of C ellbeam is provided with the reinforcement gusset, for steady more, reliable in the hoisting process, be provided with arc groove at the gusset that is positioned at described C shape fine strain of millet upper branch arm inboard, so that the jack operation.Distance between the upper and lower support arm of the described C shape fine strain of millet inboard is slightly larger than the maximum radial dimension on motor stator top, and the length (referring to clear length) of the upper and lower support arm of described C ellbeam is equal to or slightly less than the axial dimension of spreading axle endoporus, shown in Fig. 2-2.
Related in the present embodiment have related parameter and process conditions as follows:
(1) cut deal four-high mill main transmission 7000KW frequency changer circuit frequency-changing speed-regulating synchronous motor, band Backpack type air/water cooler forced ventilation mode in the employing, motor two ends air intake, middle air-out.Motor stator adopts overall structure, has on the electric baseboard of the recessed base plate of endoporus in the middle of motor stator is fixed on.Two main driving motors are arranged in the motor room, up-down rollers motor radial center linear distance 7155mm, and the height of center of every motor is 800mm, last motor height of center is in following motor center.
(2) motor and connection auxiliary overall dimensions are: the long 2960mm of motor stator, wide 3900mm, high 3435mm, internal diameter are φ 2630mm; The long 7058mm of rotor, external diameter φ 2606mm; Spreading axial length 1690mm; The axially long 7155mm of following motor foundation pit; The plane is than the high 2350mm in plane on the following electric baseboard on the last electric baseboard; The equipment that is provided with in the motor room is installed and one in 100t/20t overhead traveling crane crane of maintenance.
(3) main driving motor is horizontal installation, arrangement for following roller motor preceding (is preceding near milling train), last roller motor after mounting means.Adopt earlier rotor is put into down on the electric baseboard with foundation pit in two bracing frames on, the non-transmision end shaft extension that then motor stator is enclosed within rotor is also filled up, and utilizes the C ellbeam with the 5T jack spreading axle to be carried out the piercing core hanging method with the method that the non-transmision end shaft extension of rotor is connected again in the motor stator thorax.
Adopt the above-mentioned large-size machine of C ellbeam piercing core hanging may further comprise the steps:
At first, as 201 steps, preparation before lifting, get lifting required equipment and auxiliary ready, such as: 100t/20t overhead traveling crane crane, balance beam 5, C ellbeam 4, bracing frame, jack 8, steel wire rope 9, jack 15 peaceful parallels 16 etc., and the forward and backward bearing pedestal of motor (comprising various pads) that will install, adjust carries out mark, is placed on a side of electric baseboard after the dismounting.
Then, shown in 202 and 203 steps,, be placed on (extreme position of driving dolly) 13 foremost on motor basis 11, and support firm with first bracing frame 6 and second bracing frame 7 with rotor 2 under balance beam 5 liftings.Determine motor stator 1 fore-and-aft direction, with driving 10 motor stator 1 sling, rotor 2 is inserted according to inserting rotor direction 14, that is: rotor 2 non-transmision end side shafts are put in motor stator 1 thorax, fall within then on 4 contour strong points forming by jack 15 peaceful parallels 16 on the sole plate.Adjust the quantity of the height peace parallels 16 of first bracing frame 6, second bracing frame 7, jack 15, motor stator 1 interior thorax longitudinal center line 17 is overlapped with rotor axial center line 13.
Next, shown in 204 steps, spreading axle 3 is sling, with jack 8 and steel wire rope 9 balancings with C ellbeam 4.Find accurately behind the balance point in spreading axle 3 shift-in motor stators 1 thorax, make the bolt hole of spreading axle 3 corresponding one by one, and connect with armature spindle non-transmision end bolt hole.
Shown in 205 steps, lifting rotor 2 after spreading axle 3 is connected firmly with rotor 2 utilizes the dolly of overhead crane 10 to carry out punching, treats after spreading axle 3 passes motor stator 1 rotor 2 to be fallen to being placed on first bracing frame 6 and second bracing frame 7.
Shown in 206 steps, the steel wire rope 9 of spreading axle 3 one sides on the hyperphoric balance beam 5, lifting finds balance again.After treating rotor 2 balances, utilize the moving driving of artificial disc 10 dollies that rotor 2 is penetrated motor stator 1.When penetrating, rotor 2 to tightly note the gap between motor stator 1 and the rotor 2, usually this gap value is controlled at 1-20 millimeter scope, be preferably 10 millimeter, about between electronics stator 1 and the rotor 2, front and back and about gap value equate substantially, the level that keeps rotor 2 with balance beam 5 is with steady, and prevent to wound coil of stator of motor and steel wire rope 9 are reined in bad motor-spin-coil end.
Shown in 207 steps, when spreading axle 3 reaches space extreme position 12, temporarily rotor 2 is dropped in motor stator 1 thorax.With driving 10 spreading axle 3 is removed, the punching of again rotor 2 usefulness balance beams 5 being sling puts in place.
Shown in 208 steps, after rotor 2 punchings put in place, utilize jack and jack 8 that antero posterior axis bearing installation in position is aligned, use mechanic jacks peace parallels whereabouts motor stator on 4 strong points again, travelling crane hook whereabouts rotor, both fall simultaneously, and control rate equates, prevents collision.When motor stator 1 and rotor 2 drop to the appropriate location, mating surface to base and motor stator 1 footing carefully cleans, check bolt, and on screw thread, be coated with lubricating oil, be ready to the adjustment pad of motor stator 1 base, last, shown in 209 steps, lentamente motor stator 1 and rotor 2 are fallen within respectively on base plate and the bearing pedestal, thereby finish the piercing core hanging work of motor.
Implementation result: adopt hanging method of the present invention to carry out hanging large-scale electric motor, decreased distance spatially is promptly along the installing space that dwindles nearly 1.7m on the motor axial direction; In addition, fast and safely realization stator and rotor piercing core hanging in following motor foundation pit, it is installed effect and has reached country and test assessment of bids standard, and in hoisting process, save manpower and machine resource, and shortened construction period, utilize hanging method of the present invention, it is workable, and is respond well.
Comprehensive above-mentioned example can see that the present invention is applicable to the piercing core hanging of large-size machine, as: be used for metallurgical four roller heavy and medium plate mill large-size machine piercing core hangings.Although in conjunction with the accompanying drawings the present invention has been carried out foregoing description; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; under the situation that does not break away from aim of the present invention and claim institute protection range, can also make a lot of distortion, these all belong to the row of protection of the present invention.
Claims (8)
1. hanging method that adopts C ellbeam piercing core hanging large-scale electric motor, it is characterized in that: this hanging method comprises the steps:
Step 1: lifting preparation, motor and auxiliary that hanging device, C ellbeam, desire are installed are got ready;
Step 2: the lifting rotor is placed into motor basis front end, and firm with supporting;
Step 3: the motor stator of slinging, and rotor non-transmision end side shaft extended in the motor stator thorax, be placed into then on a plurality of strong points of sole plate, adjust thorax longitudinal center line and the axial central lines of rotor in the motor stator;
Step 4: with C ellbeam piercing core hanging spreading axle: lift by crane behind the balancing, the spreading axle is penetrated in the motor stator thorax, and be connected with the non-transmision end of rotor;
Step 5: after treating that the spreading axle passes motor stator, fall to being placed on rotor on the bracing frame; Again leveling, lifting rotor, driving dolly control walking penetrates motor stator with rotor;
Step 6: when the spreading axle arrives the space extreme position, rotor is dropped in the motor stator thorax temporarily; With driving the spreading axle is removed then, the punching of again rotor being sling puts in place;
Step 7: after finishing the rotor punching, motor stator and rotor together drop to the appropriate location; Meanwhile, carry out the preparation of land;
Step 8: lentamente motor stator, rotor are fallen within respectively on base plate and the bearing pedestal, so far, finished the piercing core hanging work of motor.
2. according to the described hanging method that adopts C ellbeam piercing core hanging large-scale electric motor of claim 1, it is characterized in that: in described step 1, get ready: overhead traveling crane crane, balance beam, C ellbeam, bracing frame, jack, steel wire rope, jack peace parallels, and the forward and backward bearing pedestal of motor that will install, adjust carries out mark, is placed on a side of electric baseboard after the dismounting.
3. according to the hanging method of claim 1 or 2 described employing C ellbeam piercing core hanging large-scale electric motors, it is characterized in that: 4 contour strong points that a plurality of strong points in the described step 3 are made up of jack peace parallels.
4. according to the described hanging method that adopts C ellbeam piercing core hanging large-scale electric motor of claim 1, it is characterized in that: when rotor penetrates motor stator in the described step 5, strict control motor stator and gap between rotor, its gap value is the 1-18 millimeter, and up and down, front and back and about equal substantially, and keep rotor level and steadily with balance beam.
5. according to the described hanging method that adopts C ellbeam piercing core hanging large-scale electric motor of claim 3, it is characterized in that: in the described step 7, after finishing the rotor punching, utilize jack and jack with the forward and backward bearing pedestal installation in position levelling of motor, use jack peace parallels whereabouts motor stator on 4 strong points again, travelling crane hook whereabouts rotor, both fall simultaneously, control rate equates, bumps preventing.
6. according to the described hanging method that adopts C ellbeam piercing core hanging large-scale electric motor of claim 1, it is characterized in that: in the described step 7, preparation comprises that the mating surface to base and motor stator footing cleans before the described land, be coated with lubricating oil at the screw thread place after checking bolt, and be ready to the adjustment pad of motor stator base.
7. one kind according to the C ellbeam that adopts in the described hanging method of claim 1, it is characterized in that: described C ellbeam is hollow uiform section box structure, described C ellbeam inboard is provided with gusset, distance between the upper and lower support arm of the described C shape fine strain of millet inboard is slightly larger than the maximum radial dimension on motor stator top, and the length of the upper and lower support arm of described C ellbeam is equal to or slightly less than the axial dimension of spreading axle endoporus.
8. C ellbeam according to claim 7 is characterized in that: the gusset that is positioned at described C shape fine strain of millet upper branch arm inboard is provided with arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710059331A CN100576696C (en) | 2007-08-28 | 2007-08-28 | Adopt the hanging method of C ellbeam piercing core hanging large-scale electric motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710059331A CN100576696C (en) | 2007-08-28 | 2007-08-28 | Adopt the hanging method of C ellbeam piercing core hanging large-scale electric motor |
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| Publication Number | Publication Date |
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| CN101114786A true CN101114786A (en) | 2008-01-30 |
| CN100576696C CN100576696C (en) | 2009-12-30 |
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| CN200710059331A Expired - Fee Related CN100576696C (en) | 2007-08-28 | 2007-08-28 | Adopt the hanging method of C ellbeam piercing core hanging large-scale electric motor |
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| CN105905789A (en) * | 2016-06-24 | 2016-08-31 | 上海宝田新型建材有限公司 | Device special for lifting large motor rotor and lifting method |
| CN107359759A (en) * | 2017-09-01 | 2017-11-17 | 华菱安赛乐米塔尔汽车板有限公司 | The device of Large Synchronous Machine punching is completed using flat car |
| CN107359759B (en) * | 2017-09-01 | 2023-07-21 | 华菱安赛乐米塔尔汽车板有限公司 | Device for finishing core penetration of large synchronous motor by utilizing flat car |
| CN109921572A (en) * | 2017-12-12 | 2019-06-21 | 上海电气集团上海电机厂有限公司 | Compact rolling bearing structure motor installs method |
| CN109921572B (en) * | 2017-12-12 | 2021-06-04 | 上海电气集团上海电机厂有限公司 | Penetrating method of compact rolling bearing structure motor |
| CN110054074A (en) * | 2019-03-09 | 2019-07-26 | 中铁建设集团有限公司 | A kind of steel bar template integrated component hanging component and method in groups |
| CN110054074B (en) * | 2019-03-09 | 2024-03-15 | 中铁建设集团有限公司 | Assembly and method for hoisting reinforced bar formwork integrated components in groups |
| CN111573539A (en) * | 2020-05-31 | 2020-08-25 | 嘉兴学院 | Hoisting device for super-long steam turbine generator |
| CN114448183A (en) * | 2022-02-17 | 2022-05-06 | 重庆水轮机厂有限责任公司 | Core-pulling and core-penetrating overall assembly method for generator rotor |
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|---|---|
| CN100576696C (en) | 2009-12-30 |
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