CN102790481B - Dismounting device for rotor of water supply pump motor - Google Patents

Dismounting device for rotor of water supply pump motor Download PDF

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Publication number
CN102790481B
CN102790481B CN201210279939.7A CN201210279939A CN102790481B CN 102790481 B CN102790481 B CN 102790481B CN 201210279939 A CN201210279939 A CN 201210279939A CN 102790481 B CN102790481 B CN 102790481B
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CN
China
Prior art keywords
rotor
water supply
supply pump
pump motor
detaching
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CN201210279939.7A
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CN102790481A (en
Inventor
裴玉龙
张亚龙
马志强
郑义文
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Shaanxi Guohua Jinjie Energy LLC
China Shenhua Energy Co Ltd
Beijing Guohua Electric Power Co Ltd
Original Assignee
Shaanxi Guohua Jinjie Energy LLC
China Shenhua Energy Co Ltd
Beijing Guohua Electric Power Co Ltd
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Application filed by Shaanxi Guohua Jinjie Energy LLC, China Shenhua Energy Co Ltd, Beijing Guohua Electric Power Co Ltd filed Critical Shaanxi Guohua Jinjie Energy LLC
Priority to CN201210279939.7A priority Critical patent/CN102790481B/en
Publication of CN102790481A publication Critical patent/CN102790481A/en
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Abstract

The invention discloses a dismounting device for a rotor of a water supply pump motor. The dismounting device comprises a traction mechanism (10), a connecting shaft (4), a hoisting traveling mechanism and a sliding supporting mechanism, one end of a rotor (5) of the water supply pump motor (100) is connected with the connecting shaft (4), the connecting shaft is leaned against the sliding supporting mechanism, the other end of the rotor is hoisted on the hoisting traveling mechanism through a coupler (51), the traction mechanism is connected with the coupler so as to withdrawn the rotor from the water supply pump motor, or the traction mechanism is connected with the connecting shaft so as to penetrate the rotor into the water supply pump motor. The connecting shaft is connected with the rotor, the connecting shaft which is used as a bearing shaft and a transmission bearing on one end of the rotor is pressed on the sliding supporting mechanism on one end of the water supply pump motor, and the hoisting traveling mechanism is arranged on the other end of the water supply pump motor so as to hoist the coupler on the other end of the rotor so as to withdraw the rotor. When the rotor is installed into the water supply pump motor, the traction mechanism can be arranged on one end of the rotor which is provided with the connecting shaft so as to place the rotor into the motor by pulling the connecting shaft.

Description

The attaching/detaching apparatus of water supply pump motor rotor
Technical field
The present invention relates to a kind of apparatus for examination and repair of motor, particularly, relate to a kind of attaching/detaching apparatus of rotor of water supply pump motor.
Background technology
Water supply pump motor is subject to the narrow and small restriction of plant designing and space for maintenance usually, is difficult to normally carry out electronic service work.Such as after motor burning, need the defect eliminating motor device inherence by taking out rotor, thus the life cycle of extension device, strengthen stabilization of equipment performance and ensure that the steady of unit sends out full sending out.More than ten tons but the rotor due to water supply pump motor weighs usually and reach three meters, adopt special repairing rotor equipment of taking out then to need to have larger space for maintenance on water supply pump motor side, and be all difficult to provide this space for maintenance in common water supply pump motor installation factory building or space for maintenance.In addition, due to the gap minimum (about 5 millimeter) between the rotor of water supply pump motor and stator, need extremely careful with antisitic defect motor when extracting rotor out.Therefore, be necessary to design and can be used in water supply pump motor rotor and extract and load and the specialist tools of narrow and small fabricating yard can be adapted to.
Summary of the invention
The object of this invention is to provide a kind of attaching/detaching apparatus of water supply pump motor rotor, structure is simple and can reliably be extracted out by water supply pump motor rotor in comparatively narrow space or load motor.
For achieving the above object, the invention provides a kind of attaching/detaching apparatus of water supply pump motor rotor, this attaching/detaching apparatus comprises haulage gear, connecting axle, lifting walking mechanism and sliding support mechanism, one end of the rotor of described water supply pump motor connects described connecting axle, this connecting axle rides against on described sliding support mechanism, the other end of rotor is lifted in lifting walking mechanism by shaft coupling, haulage gear connects shaft coupling to extract rotor out water supply pump motor, or connects this connecting axle to be penetrated in water supply pump motor by rotor.
Described sliding support mechanism comprises tip mounting bracket, running roller and running roller mount pad, described running roller is by be pivotally mounted to through the rotating shaft of this running roller on running roller mount pad and to support described rotor or connecting axle, described tip mounting bracket comprises entablature and sill, this entablature is fixedly installed on the end hanger of described water supply pump motor, and described running roller mount pad varying height positions saves land and is installed on described sill.
Preferably, described sliding support mechanism also comprises the lifting body for being elevated described running roller mount pad.
Preferably, described running roller mount pad is installed on described sill movably along the radial position of described water supply pump motor.
Preferably, described lifting walking mechanism comprises "T"-shaped mobile roof support and traveling wheel, the crossbeam of this "T"-shaped mobile roof support is fixedly installed on the end hanger of described water supply pump motor, longeron extends along the central axial direction of described water supply pump motor, and the longeron that described traveling wheel is slidably mounted on described "T"-shaped mobile roof support lifts by crane described rotor by suspender.
Preferably, described lifting walking mechanism also comprises "door" type and supports, and this "door" type supports and comprises back timber, and the described longeron of described "T"-shaped mobile roof support is supported on the back timber of described "door" type support.
Preferably, described "door" type supports and also comprises two vertical upright columns, and these two vertical upright columns are height adjustable segmented column.
Preferably, this attaching/detaching apparatus comprises connecting axle described in the more piece that removably connects each other, and this more piece connecting axle is connected on described rotor coaxially.
Preferably, described haulage gear is jack.
Preferably, this attaching/detaching apparatus also comprises Rotor carriage, and this Rotor carriage is arranged on one end being provided with described lifting walking mechanism of described water supply pump motor and the iron core portion for supporting described rotor.
Preferably, the top of described Rotor carriage is formed with groove, and the outer peripheral face in this groove surfaces and described iron core portion matches.
Preferably, the corner, bottom of described Rotor carriage is provided with height adjustment bolt.
Pass through technique scheme, pass through connecting axle to be connected with rotor according to the attaching/detaching apparatus of water supply pump motor rotor of the present invention, connecting axle is pressed on the sliding support mechanism of water supply pump motor one end as the load axle of rotor one end and drive bearing, and lifting walking mechanism is set at the other end of water supply pump motor, also under the affecting of haulage gear, rotor can be extracted out with the shaft joint of the hoisting rotor other end.When rotor loads, haulage gear can be located at one end of the installation connecting axle of rotor to be loaded in water supply pump motor by rotor by traction connecting axle.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the front view of the attaching/detaching apparatus of water supply pump motor rotor according to the preferred embodiment of the present invention;
Fig. 2 is the vertical view of the attaching/detaching apparatus of the water supply pump motor rotor shown in Fig. 1;
Fig. 3 is the structural representation of the sliding support mechanism according to a kind of preferred implementation;
Fig. 4 is the mounting structure schematic diagram that the "door" type in Fig. 1 supports;
Fig. 5 is the mounting structure schematic diagram of suspender according to a kind of preferred implementation and traveling wheel;
Fig. 6 is the structural representation of the Rotor carriage according to a kind of preferred implementation.
description of reference numerals
1 tip mounting bracket 2 running roller
3 running roller mount pad 4 connecting axles
The "T"-shaped mobile roof support of 5 rotor 6
7 traveling wheel 8 suspenders
9 "door" types support 10 haulage gears
11 entablature 12 sills
20 Rotor carriage 21 rotating shafts
51 shaft coupling 91 back timbers
92 vertical upright column 100 water supply pump motors
OO ' central axis
Embodiment
Describe in detail according to the embodiment of the present invention hereinafter with reference to accompanying drawing.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use as " upper and lower " normally for direction shown in the drawings or for each parts mutual alignment relationship description word vertically, on vertical or gravity direction.The noun of locality is if " longitudinally, laterally (radial direction) " is normally for each parts mutual alignment relationship description word of water supply pump motor.The noun of locality is if " forward and backward " is normally for water supply pump motor, and namely one end of the extraction rotor of water supply pump motor is front end.
As depicted in figs. 1 and 2, the invention provides a kind of attaching/detaching apparatus of water supply pump motor rotor, this attaching/detaching apparatus comprises haulage gear 10, connecting axle 4, lifting walking mechanism and sliding support mechanism, one end of the rotor 5 of water supply pump motor 100 connects described connecting axle 4, this connecting axle 4 rides against on sliding support mechanism, the other end of rotor 5 is lifted in lifting walking mechanism by shaft coupling 51, haulage gear 10 connects shaft coupling 51 to extract rotor 5 out water supply pump motor 100, or connects described connecting axle 4 to be penetrated in water supply pump motor 100 by rotor 5.As total design, the present invention is by connecting the connecting axle 4 installed as dummy shaft to one end of rotor, to support and to transmit rotor 5, wherein connecting axle 4 can be more piece and removably connect each other, thus is connected to coaxially on rotor 5.Further, arrange sliding support mechanism and lifting walking mechanism respectively at the axial two ends of water supply pump motor 100, sliding support mechanism is used for the connecting axle 4 of support rotor 5 one end, and lifting walking mechanism is in order to the shaft coupling 51 of hoisting rotor 5 other end.When extracting rotor 5, haulage gear 10 is arranged on the lifting walking mechanism side of rotor 5, by pulling shaft coupling 51 to extract rotor 5 out, in the process that rotor 5 is extracted out, connecting axle 4 slippage keep rotor 5 move along its central axis and do not deflect excessive on sliding support mechanism.When installing rotor 5, haulage gear 10 can be arranged on the lifting walking mechanism side of rotor 5 or the sliding support mechanism side of rotor 5, to promote or to pull rotor 5 to load in water supply pump motor 100.
Consider the limited space of the installation factory building of water supply pump motor 100, and in order to effectively utilize space layout and easy for installation, as shown in Figure 3, sliding support mechanism in present embodiment preferably comprises tip mounting bracket 1, running roller 2 and running roller mount pad 3, and running roller 2 is by being pivotally mounted to through the rotating shaft 21 of this running roller on running roller mount pad 3 and support rotor 5 or connecting axle 4.Tip mounting bracket 1 comprises entablature 11 and sill 12, and the two ends of this entablature 11 are fixedly installed on two, the end hanger of water supply pump motor 100 by securing member, and running roller mount pad 3 varying height positions saves land and is installed on sill 12.This just takes full advantage of the design feature of motor self, only need just can fixed support running roller 2 by a tip mounting bracket 1, thus the end of support and connection axle 4 or rotor 5.As seen from Figure 1, the installing space of sliding support mechanism is little, and by being arranged on hanger, firm and carrying weighs.Running roller 2 moves for Structure deformation and promotion connecting axle 4, and therefore, the surface of running roller 2 can be formed as the inner concave matched with the surface of connecting axle 4, with firm support connecting axle 4.Consider the length of rotor 5 and connecting axle 4, several this running roller 2 supporting constructions can be set in the central axis OO ' direction of rotor 5.
Running roller 2, as supporting construction, also should make position adjustments along the transverse direction of water supply pump motor 100 and short transverse.Therefore sliding support mechanism also can comprise the lifting body such as jack etc. for being elevated running roller mount pad 3, to regulate the height and position of running roller mount pad 3, running roller 2 and connecting axle 4.Certainly, also can in the corner setting height(from bottom) adjusting bolt of running roller mount pad 3, to regulate described height and position.When regulating the lateral attitude of rotor 5, running roller mount pad 3 is set to be installed to movably on sill 12 along the radial position of water supply pump motor 100.Such as, transversely two mounting panels are set at interval at the motor of the sill 12 of tip mounting bracket 1, mounting panel holds running roller mount pad 3 by bolt, thus running roller mount pad 3 can be fixed and the radial position of running roller mount pad 3 can be regulated.Certainly, also install fixing by forms such as ball screws in radial direction and promote running roller mount pad 3.Like this, in all adjustable situation of radial direction and short transverse position of rotor 5, when extracting or load rotor 5, can detect in real time and gap (i.e. air gap) between corresponding adjustment rotor 5 and stator, colliding in order to avoid the two produces.
In the present embodiment, as shown in Figure 1, Figure 2 and Figure 4, described lifting tread systems design is for comprising "T"-shaped mobile roof support 6 and traveling wheel 7, the crossbeam of this "T"-shaped mobile roof support 6 can be fixedly installed on two end hangers of water supply pump motor 100 other end equally, the longeron of "T"-shaped mobile roof support 6 then extends forward along the central axis OO ' direction of water supply pump motor 100, and wherein traveling wheel 7 is slidably mounted on the longeron both sides of "T"-shaped mobile roof support 6 and lifts by crane rotor 5 by suspender 8.The structure of suspender 8 is see Fig. 5, this suspender is preferably rigid member, when namely this end of rotor 5 being sling by being connected to shaft coupling 51, adjustment rotor 5 makes it to remain on after on central axis OO ' position, rotor 5 is under the pulling of haulage gear 10 such as jack etc., the height and position of rotor 5 is fixed, and can not produce and move up and down, thus keeps the air gap in upper and lower orientation constant.Herein, the "T"-shaped mobile roof support 6 of design is easy for installation and can slide thereon, so that simply and effectively extract rotor 5 for traveling wheel 7.
In addition, the longeron external part of "T"-shaped mobile roof support 6 can not lack support when lifting by crane rotor 5, therefore the lifting walking mechanism in present embodiment also comprises "door" type and supports 9, this "door" type supports 9 and comprises back timber 91, the longeron of "T"-shaped mobile roof support 6 is supported on "door" type and supports on the back timber 91 of 9, as shown in Figure 4.Arrange "door" type support 9 not only to play a supporting role, the installation direction of the longeron of "T"-shaped mobile roof support 6 can also be regulated, namely moving direction when rotor 5 is extracted out, remain strictly centrally axes O O ' direction to make longeron as much as possible to extend and can not skew in laterally offset or short transverse, especially avoid longeron flexural deformation by the short transverse under rotor 5 Action of Gravity Field after rotor 5 of slinging.Therefore, as shown in Figure 4, "door" type supports 9 and also comprises two vertical upright columns 92, and these two vertical upright columns 92 are preferably height adjustable segmented column, to regulate the height and position of the longeron of "T"-shaped mobile roof support 6.And for supporting the longeron of "T"-shaped mobile roof support 6 better, multiple "door" type can be set along longeron direction and support 9.In addition, those skilled in the art are apprehensible is, the installation of traveling wheel 7 in the longeron both sides of "T"-shaped mobile roof support 6 and walking, and haulage gear 10 such as jack supports in "T"-shaped mobile roof support 6 or "door" type the category that installation on 9 and manipulation etc. are common practise, thus this is no longer going to repeat them.
When rotor 5 extracts, can not remain one end and be supported on sliding support mechanism, other end hanging in lifting walking mechanism, and should more firm support even be moved.Therefore, consider the own structural characteristics of rotor 5, namely iron core diameters is large and be positioned at can for supporting in the middle part of rotor.Attaching/detaching apparatus in present embodiment also preferably includes Rotor carriage 20, as shown in Figure 6, this Rotor carriage 20 be arranged on water supply pump motor the one end being provided with lifting walking mechanism and for the iron core portion of support rotor 5.It should be noted that the both sides short-circuited conducting sleeve in iron core portion must not bear pressure.Position immediately below the longeron that Rotor carriage 20 can be placed on "T"-shaped mobile roof support 6, departs from after water supply pump motor 100 completely until iron core portion, iron core portion can be moved and be placed on Rotor carriage 20.As shown in Figure 6, the top of Rotor carriage 20 is preferably formed fluted, and the outer peripheral face in this groove surfaces and iron core portion matches with stable support rotor 5.Further, be that maintenance needs or movement needs, can in corner, the bottom rational height adjusting bolt of Rotor carriage 20, to regulate the height and position of rotor 5.
When operating extraction rotor 5, the sliding support mechanism at water supply pump motor 100 rear portion being first installed, during installation, first carrying out the rough adjustment in the axle center of tip mounting bracket 1 and rotor 5.Jack is pre-installed in tip mounting bracket 1, and when adjusting adjustment height, support jack is to adjust the air gap up and down between rotor and stator.By air gap described in light transmission method Real-Time Monitoring."T"-shaped mobile roof support 6 and "door" type support are then installed, when installing "T"-shaped mobile roof support 6, need to adjust "T"-shaped mobile roof support 6 and the central axis OO ' departure of rotor 5, making Deviation Control be the smaller the better."T"-shaped mobile roof support 6 is installed traveling wheel 7 and suspender 8 and jack, and places Rotor carriage 20, prepare lifting rotor 5.Before extracting rotor 5, also need the height and the radial position that adjust sliding support mechanism, meet the needs of air gap.After "T"-shaped mobile roof support 6 side lifting rotor 5, also to adjust the vertical support of sliding support mechanism, guarantee at 4 of stator and rotor gap evenly, i.e. four of circumferencial direction intercardinal width of air gap uniformities, and check the relevant position air gap of the front and back end of water supply pump motor 100, keep uniformity.This makes it possible to operate jack, rotor 5 is slowly extracted out.The longeron slippage of the "T"-shaped mobile roof support of front end edge of rotor 5 is advanced, and rear end can taken out the i.e. dummy shaft connection segment installation of connecting axle 4 in rotor process.
When extracting rotor 5 out, the iron core portion of rotor is directly placed on Rotor carriage 20, notice that both sides short-circuited conducting sleeve must not bear pressure, after iron core portion pressure-bearing is on Rotor carriage 20, regulate four corner bolts, promote the height of Rotor carriage 20, lifting walking mechanism and sliding support mechanism are not all stressed, to prevent the connecting screw of segmented dummy shaft excessive by shearing, the gap of junction is increased.Finally, stator maintenance can be carried out rising on Rotor carriage 20.Correspondingly, penetrate rotor operation can refer to above-mentioned anti-operation execution of taking out rotor.
In the attaching/detaching apparatus of water supply pump motor rotor according to the present invention, make use of the hanger of motor both sides, guarantee the fixation of attaching/detaching apparatus and motor.Rotor is extracted side out and be have employed single-beam and support, and brace summer hangs traveling wheel, so that the moving axially of rotor.Wherein it should be noted, be limited to the requirement of space for maintenance, the support dummy shaft at rotor rear portion can become multi-segment structure according to the Design of length of rotor, connects the length extending dummy shaft during installation piecemeal.The front end of rotor can adopt with traveling wheel and is rigidly connected and has vertical adjustment nargin.The sliding support mechanism of rotor rear end should have enough adjustable ranges, ensures the surrounding gap uniformity of stator and rotor.Rotor carriage should be able to adjust according to the actual height of rotor, and the axial length of Rotor carriage should be less than the axial length in rotor core portion.Further, corresponding adjustment is made in time in the gap of taking out in rotor process should look over one's shoulder stator and rotor, maintenance stator and rotor surrounding gap even.
What in narrow space, have effectively achieved water supply pump motor according to the attaching/detaching apparatus of water supply pump motor rotor of the present invention takes out cartridge rotor, this apparatus structure is simple, install ingenious, in repairing rotor operation when being particularly suitable for large feedwater pump motor space does not satisfy the requirements at the scene.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (11)

1. the attaching/detaching apparatus of a water supply pump motor rotor, it is characterized in that, this attaching/detaching apparatus comprises haulage gear (10), connecting axle (4), lifting walking mechanism and sliding support mechanism, one end of the rotor (5) of described water supply pump motor (100) connects described connecting axle (4), this connecting axle (4) rides against on described sliding support mechanism, the other end of described rotor (5) is lifted in described lifting walking mechanism by shaft coupling (51), described haulage gear (10) connects described shaft coupling (51) to extract described rotor (5) out described water supply pump motor (100), or connect described connecting axle (4) to penetrate in described water supply pump motor (100) by described rotor (5),
Wherein, described sliding support mechanism comprises tip mounting bracket (1), running roller (2) and running roller mount pad (3), described running roller (2) is gone up by being pivotally mounted to running roller mount pad (3) through the rotating shaft (21) of this running roller and supporting described rotor (5) or connecting axle (4), described tip mounting bracket (1) comprises entablature (11) and sill (12), this entablature (11) is fixedly installed on the end hanger of described water supply pump motor (100), described running roller mount pad (3) varying height positions saves land and is installed on described sill (12).
2. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, described sliding support mechanism also comprises the lifting body for being elevated described running roller mount pad (3).
3. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, described running roller mount pad (3) is installed on described sill (12) movably along the radial position of described water supply pump motor (100).
4. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, described lifting walking mechanism comprises "T"-shaped mobile roof support (6) and traveling wheel (7), the crossbeam of this "T"-shaped mobile roof support (6) is fixedly installed on the end hanger of described water supply pump motor (100), longeron extends along central axis (the OO ') direction of described water supply pump motor (100), the longeron that described traveling wheel (7) is slidably mounted on described "T"-shaped mobile roof support (6) lifts by crane described rotor (5) by suspender (8).
5. the attaching/detaching apparatus of water supply pump motor rotor according to claim 4, wherein, described lifting walking mechanism also comprises "door" type and supports (9), this "door" type supports (9) and comprises back timber (91), and the described longeron of described "T"-shaped mobile roof support (6) is supported on described "door" type and supports on the back timber (91) of (9).
6. the attaching/detaching apparatus of water supply pump motor rotor according to claim 5, wherein, described "door" type supports (9) and also comprises two vertical upright columns (92), and these two vertical upright columns (92) are height adjustable segmented column.
7. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, this attaching/detaching apparatus comprises connecting axle (4) described in the more piece that removably connects each other, and this more piece connecting axle (4) is connected on described rotor (5) coaxially.
8. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, described haulage gear (10) is jack.
9. the attaching/detaching apparatus of water supply pump motor rotor according to claim 1, wherein, this attaching/detaching apparatus also comprises Rotor carriage (20), and this Rotor carriage (20) is arranged on one end being provided with described lifting walking mechanism of described water supply pump motor and the iron core portion for supporting described rotor (5).
10. the attaching/detaching apparatus of water supply pump motor rotor according to claim 9, wherein, the top of described Rotor carriage (20) is formed with groove, and the outer peripheral face in this groove surfaces and described iron core portion matches.
The attaching/detaching apparatus of 11. water supply pump motor rotors according to claim 9, wherein, the corner, bottom of described Rotor carriage (20) is provided with height adjustment bolt.
CN201210279939.7A 2012-08-08 2012-08-08 Dismounting device for rotor of water supply pump motor Active CN102790481B (en)

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Application Number Priority Date Filing Date Title
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CN102790481B true CN102790481B (en) 2015-04-08

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CN104214073B (en) * 2013-05-31 2019-06-25 北京谊安医疗系统股份有限公司 Compressor
CN105141076B (en) * 2015-08-25 2018-01-23 内蒙古伊泰煤制油有限责任公司 A kind of method of electrical machmary maintenance
CN105743295B (en) * 2015-12-25 2019-02-12 北方华锦化学工业股份有限公司 A kind of pumping dress specific purpose tool for generator amature
CN108927640B (en) * 2017-05-26 2021-02-05 中国电建集团上海能源装备有限公司 Device for disassembling and assembling core package of water supply pump of 1000MW full-capacity thermal power generating unit
CN112054638A (en) * 2020-07-20 2020-12-08 中国神华能源股份有限公司国华电力分公司 Coal pulverizer motor rotor dismounting device
CN112072866A (en) * 2020-09-15 2020-12-11 中国南方电网有限责任公司超高压输电公司昆明局 Horizontal motor rotor disassembling tool and using method thereof

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