CN216883759U

CN216883759U - Motor rotor jacking and coiling device

Info

Publication number: CN216883759U
Application number: CN202220524429.0U
Authority: CN
Inventors: 邓龙杰; 李强; 王秀超; 郑佳强
Original assignee: Shandong Nuclear Power Co Ltd
Current assignee: Shandong Nuclear Power Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-05
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to the technical field of maintenance of circulating water pumps of nuclear power plants and discloses a motor rotor jacking and rotating device which comprises a supporting mechanism, a rotary table component and a jacking piece, wherein the supporting mechanism is supported at the bottom of the rotary table component, the rotary table component is rotatably arranged at the top of the supporting mechanism around a vertical axis, the jacking piece is fixedly arranged on the upper surface of the rotary table component and is coaxially arranged with the rotary table component, the output end of the jacking piece can rise and extend in the vertical direction to press against the bottom of the motor rotor and upwards jack the motor rotor, and the output end of the jacking piece can also retract downwards in the vertical direction. The motor rotor jacking and turning device provided by the utility model can jack up the motor rotor so as to support the motor rotor when the thrust head is detached, and can assist in turning the motor rotor.

Description

Motor rotor jacking and coiling device

Technical Field

The utility model relates to the technical field of maintenance of circulating water pumps in nuclear power plants, in particular to a motor rotor jacking and turning device.

Background

The circulating water pump in the AP1000 nuclear power plant is important equipment for providing a cold source for a unit, and the circulating water pump is mainly used for providing a large amount of cooling seawater for a condenser and cooling steam which pushes a steam turbine to work into condensed water. The power of the motor of the circulating water pump is about 4000KW, the motor is a conventional island-body type maximum motor, the total weight of the motor is 60 tons, the weight of a motor rotor is 20 tons, and the weight of the motor rotor is transferred to a thrust tile through a thrust head, so that the axial positioning of the motor rotor is realized. The thrust head needs to be detached in the motor detaching process, the whole motor rotor lacks a force bearing part, and the motor rotor drops to the stator end cover due to self weight.

In addition, circulating water pump motor is the storage back of stewing for a long time, needs to coil the maintenance, prevents to produce between thrust collar mirror surface and the tile face and binds, takes place abnormal wear and burns the tile when leading to the first start-up, and present electric motor rotor weighs about 20 tons, and is sliding friction between thrust collar and the tile face, and the manpower can't coil.

Therefore, a need exists for a motor rotor lifting and rotating device to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a motor rotor lifting and turning device capable of lifting a motor rotor to support the motor rotor when a thrust head is detached and assisting turning of the motor rotor.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a motor rotor jacking and dish moves device, including supporting mechanism, carousel component and jacking piece, supporting mechanism support in the bottom of carousel component, the carousel component rotate around vertical axis set up in supporting mechanism's top, jacking piece fixed set up in carousel component upper surface, jacking piece with the coaxial setting of carousel component, the output of jacking piece can be followed vertical direction and risen and stretch out bottom and the top in order to press motor rotor and push up motor rotor, vertical direction retraction downwards also can be followed to the output of jacking piece.

As an optional technical scheme of electric motor rotor jacking and dish moving device, supporting mechanism includes bottom plate, support post and last supporting disk, the support post fixed set up in on the bottom plate, go up the supporting disk fixed set up in on the support post, the carousel component with go up the supporting disk and rotate around vertical axis and be connected.

As an optional technical scheme of electric motor rotor jacking and dish moving device, supporting mechanism still includes the bearing frame, the bearing frame set up in the top of support post, the central point department of putting of going up the supporting disk is equipped with the hole of stepping down, the bearing frame correspond set up in the position in the hole of stepping down and with it connects to go up the supporting disk, the carousel component with the bearing frame rotates around vertical axis and connects.

As an optional technical scheme of motor rotor jacking and dish moving device, the carousel component includes carousel body and pivot portion, pivot portion set up in carousel body lower surface, just pivot portion is located the center of rotation of carousel body, pivot portion stretches into in the bearing frame, pivot portion pass through radial bearing with the lateral wall of bearing frame rotates and is connected, pivot portion pass through thrust bearing with the diapire of bearing frame rotates and is connected.

As an optional technical solution of the motor rotor jacking and disc moving device, the upper supporting disc is provided with a first pin hole, the turntable member is correspondingly provided with a second pin hole, the motor rotor jacking and disc moving device further comprises a fixing pin, and the fixing pin can penetrate through the second pin hole and be inserted into the first pin hole to prevent the turntable member from rotating around a vertical axis.

As an optional technical scheme of electric motor rotor jacking and dish moving device, the support post includes central supporting part and periphery supporting part, the cross sectional shape of central supporting part on the horizontal plane sets up to equilateral triangle, the periphery supporting part is provided with threely, three the periphery supporting part respectively with the three lateral wall one-to-one of central supporting part is connected, the top of central supporting part with the bearing frame is connected, the top of periphery supporting part with the bearing frame reaches go up the supporting disk and connect.

As an optional technical scheme of the motor rotor jacking and jigging device, the supporting mechanism further comprises three supporting cross beams, the supporting cross beams extend along the horizontal direction, one supporting cross beam is arranged between every two adjacent periphery supporting parts, and two ends of each supporting cross beam are connected with the adjacent two periphery supporting parts in a one-to-one correspondence manner.

As an optional technical solution of the motor rotor jacking and turning device, the supporting mechanism further includes an inclined strut and an auxiliary cross beam, two ends of the inclined strut are respectively and fixedly connected with the bottom plate and the supporting upright in a one-to-one correspondence manner, the inclined strut and the bottom plate form an included angle, the auxiliary cross beam is arranged along a horizontal direction, and two ends of the auxiliary cross beam are respectively and fixedly connected with the inclined strut and the supporting upright in a one-to-one correspondence manner.

As an optional technical scheme of the motor rotor jacking and coiling device, the motor rotor jacking and coiling device further comprises a universal wheel, the universal wheel is arranged at the bottom of the supporting mechanism, and the universal wheel is detachably connected with the supporting mechanism.

As an optional technical solution of the motor rotor jacking and jigging device, the jacking piece adopts a screw jack.

The utility model has the beneficial effects that:

the motor rotor jacking and turning device provided by the utility model can act on the motor rotor from the lower part, when a thrust head in the motor needs to be disassembled, the jacking piece extends upwards and abuts against the motor rotor to replace the thrust head to support the motor rotor from the lower part, and then a worker can disassemble the thrust head; when needs dish motor rotor in order to realize the maintenance, the jacking piece upwards stretches out and butt motor rotor to continue upwards to push away motor rotor and rise and predetermine the distance, make thrust head and tile face separation, staff's accessible rotor pivot drives motor rotor and rotates this moment, because carousel component and supporting mechanism rotate around vertical direction and be connected, the carousel component and the jacking piece on it can rotate around vertical direction along with motor rotor, with the auxiliary disk motor rotor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural view (partially cut away) of a motor rotor jacking and turning device provided by the utility model;

FIG. 2 is a top view of the support mechanism provided by the present invention;

fig. 3 is a half sectional view (top view) of the support mechanism provided by the present invention.

In the figure:

1. a support mechanism; 11. a base plate; 12. supporting the upright post; 121. a central support portion; 122. an outer periphery support section; 13. an upper support tray; 131. a hole of abdication; 132. a first pin hole; 14. a support beam; 15. a diagonal brace; 16. an auxiliary cross beam;

2. a turntable member; 21. a turntable body; 22. a rotating shaft part;

3. a jacking piece; 4. a bearing seat; 5. a fixing pin; 6. a universal wheel; 7. a radial bearing; 8. and a thrust bearing.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the embodiment provides a motor rotor jacking and turning device for assisting the maintenance of a motor rotor in a circulating water pump of a nuclear power plant. Motor rotor jacking and dish moving device includes supporting mechanism 1, carousel component 2 and jacking piece 3, supporting mechanism 1 supports in the bottom of carousel component 2, carousel component 2 rotates around vertical axis and sets up in the top of supporting mechanism 1, jacking piece 3 is fixed to be set up in carousel component 2 upper surface, jacking piece 3 and the coaxial setting of carousel component 2, jacking piece 3's output can be followed vertical direction and risen the bottom of stretching out in order to press motor rotor and upwards push away motor rotor, jacking piece 3's output also can be followed vertical direction and retracted downwards.

Specifically, the motor rotor jacking and turning device provided by the embodiment can act on the motor rotor from the lower part, when a thrust head in the motor needs to be disassembled, the jacking piece 3 extends upwards and abuts against the motor rotor to support the motor rotor from the lower part instead of the thrust head, and then a worker can disassemble the thrust head, so that the motor rotor is prevented from falling onto a motor shell, and the motor rotor is protected from being damaged; when the dish motor rotor is needed to be maintained, the jacking piece 3 upwards extends out and abuts against the motor rotor, the jacking piece continues to upwards push the motor rotor to ascend by a preset distance, in the embodiment, the preset distance is not more than 0.02mm, the thrust head and the tile surface are separated, at the moment, a worker can drive the motor rotor to rotate through the rotor rotating shaft, the turntable component 2 is rotatably connected with the supporting mechanism 1 around the vertical direction, the turntable component 2 and the jacking piece 3 on the turntable component can rotate around the vertical direction along with the motor rotor, the dish motor rotor is assisted to be maintained, the motor maintenance is realized, the motor rotor jacking and dish device maintenance motor provided by the embodiment replaces a method for manually disassembling a motor bearing chamber, the construction period and manpower are saved, and the safety and the efficiency are improved. The motor rotor jacking and jigging device that this embodiment provided belongs to repeatedly usable's instrument, can assist circulating water pump motor rotor's disintegration and maintenance, has practiced thrift circulating water pump motor rotor cost of overhaul.

Optionally, the supporting mechanism 1 includes a bottom plate 11, a supporting column 12 and an upper supporting disk 13, the supporting column 12 is fixedly disposed on the bottom plate 11, the upper supporting disk 13 is fixedly disposed on the supporting column 12, the rotary disk member 2 and the upper supporting disk 13 are rotatably connected around a vertical axis, the bottom plate 11 and the upper supporting disk 13 are both configured to be a disc-shaped structure, and the outer diameter of the upper supporting disk 13 is smaller than that of the bottom plate 11.

Optionally, the supporting mechanism 1 further includes a bearing seat 4, the bearing seat 4 is disposed at the top of the supporting column 12, a yielding hole 131 is disposed at the center of the upper supporting disk 13, the bearing seat 4 is correspondingly disposed at the yielding hole 131 and connected with the upper supporting disk 13, and the rotary disk member 2 is rotatably connected with the bearing seat 4 around a vertical axis.

Optionally, the turntable member 2 includes a turntable body 21 and a rotating shaft portion 22, the rotating shaft portion 22 is disposed on the lower surface of the turntable body 21, the rotating shaft portion 22 is located at the rotating center of the turntable body 21, the rotating shaft portion 22 extends into the bearing seat 4, the rotating shaft portion 22 is rotatably connected with the side wall of the bearing seat 4 through the radial bearing 7, and the rotating shaft portion 22 is rotatably connected with the bottom wall of the bearing seat 4 through the thrust bearing 8.

Preferably, the radial bearing 7 is a deep groove ball bearing, and may be another bearing having a contact angle of 0, such as a cylindrical roller bearing or a needle bearing.

Preferably, the thrust bearing 8 is a spherical roller thrust bearing, the lower end of the rotating shaft portion 22 is provided with a step portion, the inner ring of the thrust bearing 8 abuts against the step portion, and the outer ring of the thrust bearing 8 abuts against the bottom wall of the bearing housing 4.

Optionally, the upper supporting disk 13 is provided with a first pin hole 132, the rotating disk body 21 of the rotating disk member 2 is correspondingly provided with a second pin hole, the motor rotor jacking and disk moving device further includes a fixing pin 5, the fixing pin 5 is a taper pin, and the fixing pin 5 can pass through the second pin hole and be inserted into the first pin hole 132 to prevent the rotating disk member 2 from rotating around the vertical axis. Before the jacking piece 3 jacks the motor rotor, an operator rotates the turntable member 2 to align the first pin hole 132 and the second pin hole to a coaxial position, and then inserts the fixing pin 5 into the first pin hole 132 and the second pin hole to limit the rotation angle of the turntable member 2. After the jacking piece 3 jacks the motor rotor, an operator pulls out the fixing pin 5, and the turntable component 2 can rotate relative to the supporting mechanism 1 so as to assist the motor rotor to move.

Preferably, the number of the first pin holes 132 and the number of the second pin holes are at least two, and the operator prevents the rotation of the turntable member 2 by at least two fixing pins 5, thereby improving reliability.

Optionally, the support column 12 includes a central support portion 121 and a peripheral support portion 122, a cross-sectional shape of the central support portion 121 on a horizontal plane is set to be an equilateral triangle, the peripheral support portion 122 is three, the three peripheral support portions 122 are respectively connected with three side walls of the central support portion 121 in a one-to-one correspondence, a top of the central support portion 121 is connected with the bearing seat 4, and a top of the peripheral support portion 122 is connected with the bearing seat 4 and the upper support plate 13.

Optionally, the supporting mechanism 1 further includes three supporting beams 14, the supporting beams 14 extend along the horizontal direction, one supporting beam 14 is disposed between adjacent two peripheral supporting portions 122, and two ends of each supporting beam 14 are connected to two adjacent peripheral supporting portions 122 in a one-to-one correspondence manner.

Furthermore, the supporting mechanism 1 further comprises an inclined strut 15 and an auxiliary cross beam 16, two ends of the inclined strut 15 are respectively fixedly connected with the bottom plate 11 and the supporting upright 12 in a one-to-one correspondence manner, the inclined strut 15 and the bottom plate 11 form an included angle, the auxiliary cross beam 16 is arranged along the horizontal direction, and two ends of the auxiliary cross beam 16 are respectively fixedly connected with the inclined strut 15 and the supporting upright 12 in a one-to-one correspondence manner.

Optionally, the motor rotor jacking and jigging device further comprises at least three universal wheels 6, the universal wheels 6 are arranged at the bottom of the supporting mechanism 1, and the universal wheels 6 are detachably connected with the supporting mechanism 1. The arrangement of the universal wheel 6 can realize the jacking of the motor rotor and the movement of the disc moving device on the field. Circulating water pump motor is located on motor support, because the vehicle that removes motor rotor jacking and dish moving device can not reach motor support on, can't hang motor rotor jacking and dish moving device under to motor rotor, need the manpower inside with instrument propulsion motor support cavity, use universal wheel 6 can be nimble with motor rotor jacking and dish moving device propelling movement to the inside assigned position of motor support cavity, can normal use after arriving assigned position dismantles universal wheel 6 and place motor rotor jacking and dish moving device steadily.

Preferably, the jacking members 3 are screw jacks, and the maximum load is not less than 50 tons. Of course, the jacking member 3 can also adopt other linear driving members such as an oil cylinder, an electric push rod and the like.

Preferably, the supporting mechanism 1 is made of carbon structural steel Q235, and has reliable supporting strength and good machining performance.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The utility model provides a motor rotor jacking and dish moves device, its characterized in that, includes supporting mechanism (1), carousel component (2) and jacking piece (3), supporting mechanism (1) support in the bottom of carousel component (2), carousel component (2) rotate around vertical axis set up in the top of supporting mechanism (1), jacking piece (3) fixed set up in carousel component (2) upper surface, jacking piece (3) with carousel component (2) coaxial setting, the output of jacking piece (3) can rise along vertical direction and stretch out in order to press the bottom of motor rotor and upwards push up motor rotor, the output of jacking piece (3) also can be followed vertical direction and retracted downwards.

2. The motor rotor jacking and moving device according to claim 1, wherein the supporting mechanism (1) comprises a bottom plate (11), a supporting column (12) and an upper supporting disk (13), the supporting column (12) is fixedly arranged on the bottom plate (11), the upper supporting disk (13) is fixedly arranged on the supporting column (12), and the rotating disk component (2) is rotatably connected with the upper supporting disk (13) around a vertical axis.

3. The motor rotor jacking and disc moving device according to claim 2, wherein the supporting mechanism (1) further comprises a bearing seat (4), the bearing seat (4) is arranged at the top of the supporting upright post (12), a yielding hole (131) is arranged at the central position of the upper supporting disc (13), the bearing seat (4) is correspondingly arranged at the position of the yielding hole (131) and connected with the upper supporting disc (13), and the rotary disc component (2) is connected with the bearing seat (4) in a rotating manner around a vertical axis.

4. The motor rotor jacking and turning device according to claim 3, wherein the turntable member (2) comprises a turntable body (21) and a rotating shaft portion (22), the rotating shaft portion (22) is arranged on the lower surface of the turntable body (21), the rotating shaft portion (22) is located at the rotating center of the turntable body (21), the rotating shaft portion (22) extends into the bearing seat (4), the rotating shaft portion (22) is rotatably connected with the side wall of the bearing seat (4) through a radial bearing (7), and the rotating shaft portion (22) is rotatably connected with the bottom wall of the bearing seat (4) through a thrust bearing (8).

5. The device according to claim 2, wherein the upper supporting plate (13) is provided with a first pin hole (132), the rotating plate member (2) is correspondingly provided with a second pin hole, and the device further comprises a fixing pin (5), and the fixing pin (5) can pass through the second pin hole and be inserted into the first pin hole (132) to prevent the rotating plate member (2) from rotating around a vertical axis.

6. The motor rotor jacking and jiggling device of claim 3, wherein the supporting column (12) comprises a central supporting portion (121) and three peripheral supporting portions (122), the cross-sectional shape of the central supporting portion (121) on the horizontal plane is set to be an equilateral triangle, the number of the peripheral supporting portions (122) is three, the three peripheral supporting portions (122) are respectively connected with three side walls of the central supporting portion (121) in a one-to-one correspondence manner, the top of the central supporting portion (121) is connected with the bearing seat (4), and the top of the peripheral supporting portion (122) is connected with the bearing seat (4) and the upper supporting plate (13).

7. The motor rotor jacking and jiggling device of claim 6, wherein the supporting mechanism (1) further comprises three supporting beams (14), the supporting beams (14) extend horizontally, one supporting beam (14) is arranged between adjacent two of the outer circumference supporting parts (122), and two ends of the supporting beam (14) are connected with two adjacent outer circumference supporting parts (122) in a one-to-one correspondence manner.

8. The motor rotor jacking and jigging device of claim 2, wherein the supporting mechanism (1) further comprises a diagonal brace (15) and an auxiliary beam (16), two ends of the diagonal brace (15) are respectively and fixedly connected with the bottom plate (11) and the supporting upright (12) in a one-to-one correspondence manner, the diagonal brace (15) and the bottom plate (11) are arranged at an included angle, the auxiliary beam (16) is arranged along a horizontal direction, and two ends of the auxiliary beam (16) are respectively and fixedly connected with the diagonal brace (15) and the supporting upright (12) in a one-to-one correspondence manner.

9. The motor rotor lifting and turning device according to any one of claims 1 to 8, further comprising a universal wheel (6), wherein the universal wheel (6) is disposed at the bottom of the supporting mechanism (1), and the universal wheel (6) is detachably connected to the supporting mechanism (1).

10. The device for lifting and turning the rotor of an electric machine according to any one of claims 1 to 8, characterised in that the lifting member (3) is a screw jack.