JP3524365B2 - Internal pump motor handling device and internal pump motor handling method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus such as an internal pump motor, a secondary seal handling tool, a stretch tube nut handling tool, etc., which is disposed below the reactor pressure vessel of an improved boiling water reactor. The present invention relates to a handling device and a handling method for efficient transportation, a carrier truck, and a lifting device.

[0002]

2. Description of the Related Art Conventionally, as an example of a method for transporting, standing up, or laying down an internal pump motor, it is possible to stand upside down or lay it down while the internal pump motor is mounted on a trolley. There are various transport vehicles and handling methods.

As described in JP-A-5-188182,
Even if the internal pump motor is transported by the transport carriage and the internal pump motor is rotated in the vertical state, the internal pump motor is stopped at a position where it does not interfere with the surrounding control rod drive mechanism, piping group, etc. , A method has been proposed in which the carrier truck is moved and positioned directly below the electric chain block.

In addition to the internal pump motor which is a component of the internal pump, the stretch tube nut handling tool and the secondary seal handling tool that handle the stretch tube nut and the secondary seal are handled as the objects to be transported by the transport cart. In this case, since the size is larger than that of the internal pump motor, the control rod drive, which is a component in the surrounding reactor room, is driven at the same position where the turning radius is large and the internal pump motor is raised or laid sideways. There is a risk of interfering with the mechanism and piping group, and when rotating the above equipment, it is necessary to skillfully perform both operations of rotation and traveling movement alternately, and it requires manpower for work such as interference confirmation. .

[0005]

However, in the handling of the internal pump motor described above, when the flywheel for increasing the inertia is incorporated in the internal pump motor, the output of the motor is increased, etc. When the internal pump motor is long or when handling stretch tube nut handling equipment or secondary seal handling equipment that is larger than the internal pump motor,
Since the space above the carrier is reduced, no consideration is given to avoiding interference with surrounding control rod drive mechanisms and piping groups.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to reliably avoid interference with peripheral equipment and piping during rotational operation even if the internal pump motor and the above-mentioned handling tool are long.

[0007]

A first means of the present invention is a platform installed horizontally below a reactor pressure vessel, an elevating device mounted on the platform, and a vertical opening. A carrier dolly having a notch portion, a traveling path of the carrier dolly mounted on the platform, and an object to be transported mounted on the carrier rotatably supported in a vertical direction and a rotation support point thereof. The radius of rotation of the lower end of the transported object is the traveling road surface of the transport vehicle.
A supporting means equipped to the carrier at a height position that is lower than the above, and a notch portion of the platform opened in the vertical direction, which is equipped in a platform portion between the traveling paths. , A lifting device for loading and unloading the transported object between the transport carriage and the lifting device, and a handling device for an internal pump motor, wherein the platform is horizontally rotated to turn the lifting device into a reactor pressure vessel. Position it below the attached internal pump motor, raise the lifting device to receive the motor,
The elevating device lowers the motor, the platform horizontally swivels to position the motor below the hoist, the hoist lifts the motor, and the elevating device retracts to a position where it does not interfere with the entry route of the carrier truck Move the dolly along the running path and position it below the hoisted motor, and then lower the motor with a lifting machine to rotatably receive the motor, and then tilt the motor sideways from the vertical position. The transportation method for transporting the motor in the target direction with the carrier truck and then installing the motor with the carrier truck on the reactor pressure vessel side is the reverse of the above procedure. The motor rotates between a horizontal posture and a vertical posture to change the posture.However, since the rotation radius reaches below the traveling road surface of the rotary transport carriage, Min will be or if there is a space to allow a short turning radius above the rotation support center according to, accidental contact with other structures in the transport carriage above can be suppressed.

[0008] The second means is a platform installed rotatably below the reactor pressure vessel, an elevating device mounted on the platform, and a notch portion of a carriage having an opening in the vertical direction and one horizontal end. A transport carriage having, support means for rotatably supporting an object to be transported mounted on the transport carriage in a vertical direction, a traveling path of the transport vehicle equipped on the platform, and a platform portion between the traveling paths. And a notch portion of the platform that is opened in the up-down direction and is provided at the rotation support point of the rotation support means such that the radius of gyration of the lower end of the transported object is lower than the traveling road surface of the transport carriage. A handling device for an internal pump motor, characterized in that the handling device is equipped on the transport carriage at a height position which is basically the same as the first means. Flip effect is obtained, but the following will add describes only different points. That is, the motor of the internal pump passed from the reactor pressure vessel side to the lifting device arrives at a position facing the transport carriage due to the horizontal swing of the platform, and then the transport carriage is advanced to the motor side to move the motor to the transport carriage. The horizontal opening is placed inside the open end, and the motor is lowered by the lifting device to deposit the motor on the rotation support means, and the motor is rotated from the vertical posture to the horizontal posture on the carriage, and conversely from the transport carriage. When the motor is transported to the reactor pressure vessel side, the reverse method is used.

The third means is a carrier truck which is opened in the vertical direction and one horizontal end side, and the radius of gyration of the lower end of the carrier is below the wheels of the carrier truck. And a rotation carrier for rotatably supporting the transported object in the up-and-down direction, and a transport carriage of the internal pump, wherein the rotation support means on the transport carriage is moved by horizontally moving the transport carriage. It is possible to obtain the effect that the transfer target is located at a position where the transfer target can be received, the transfer target is lowered, and the transfer target can be easily transferred between the transfer carriage and another transportation means by the reverse procedure.

A fourth means is an elevating device used for vertically moving the object to be conveyed when the object to be conveyed is transferred between the carrier truck and the reactor pressure vessel. It is a lifting device for an internal pump motor, characterized in that the receiving part is provided with a turning table for horizontally rotating the transferred object, wherein the transferred object mounted on the turning table of the lifting device is turned by the turning table. , The effect of adjusting the angle to the position where the attachment lug of the transported object to the elevating device is connected to the elevating device, or the turning position adjustment when lowering the transported object from the elevating device to the transport carriage .

The fifth means includes a carrier truck for transporting the object to be transported, a platform which is horizontally rotatable below the reactor pressure vessel to allow the carrier truck to enter, and the platform. In an internal pump motor handling device having an elevating device for transferring the transported object to and from the transport carriage, the platform is equipped with another elevating device other than the elevating device, and the other elevating device is provided. It is an internal pump motor handling device characterized in that at least a secondary seal handling tool is stored in the platform at a position where it can be moved up and down by the device, and the secondary seal handling tool is stored in the platform in advance. During the work stage using the secondary seal handling tool, vertical movement and platform movement by another lifting device It is possible to position it at a desired work position and use it in combination with the horizontal swivel movement, and when the work is completed, return it to the original place and store it, and carry in the secondary seal handling tool from the outside with a carrier truck. In addition, it is possible to reduce the work to be carried out and to shorten the working time.

A sixth means supports the transferred object up and down so that the radius of rotation of the lower end of the transferred object reaches below the wheels of the transfer vehicle, and the transferred vehicle transfers the transferred object. When transporting the body, the transported body should be in a horizontal rotation posture, and when the transported body is passed from the transport carriage to another transportation means below the reactor pressure vessel, the transported body should be transported. By rotating and lowering the lower end of the body, the transported object is placed in a vertical rotation posture in which the lower end reaches below the wheels of the transport carriage, and the transfer is performed from the other transport means to the transport carriage. When transporting the transported object,
A method of handling an internal pump motor, which is performed after the transported object is placed in a horizontal posture by rotating and raising the lower end of the transported object. The body is transported leveled,
It does not require a wide transportation space in the vertical direction, and it does not require a large transportation space in the vertical direction, and it does not transfer a carrier from a carrier to another carrier in the space below the reactor pressure vessel, or it transfers a carrier from another carrier to a carrier. After receiving the body, the posture of the conveyed body is rotated to a posture different from the conventional posture by 90 degrees, but at the time of rotation, the radius of gyration below the rotation viewpoint is larger than that of the conventional one, so that the conveyed body above the rotation fulcrum is rotated. The vertical space required to rotate the body is lower than before, and the repeated movement of the transported object and horizontal movement of the carrier, which was performed to avoid interference with equipment in the reactor room It is possible to reduce the time and effort required for confirmation work for avoiding interference.

A seventh means is the sixth means, in which the carrier is transferred between a carrier carriage having one end near the reactor pressure vessel opened and a lifting device, and then the carrier carriage is moved to the transfer position. Is a method of handling an internal pump motor which moves the container from the reactor pressure vessel in a direction away from the reactor pressure vessel. In addition to the function and effect of the sixth means, the object to be transferred on the carrier is received by the lifting device from below. Immediately after that, the transport carriage can move backward, and it moves to a position where the lifting device with the transported object placed is sandwiched from the horizontal direction, and then the lifting device lowers the transported object so that the transported object is handed over to the transport vehicle. Therefore, when transferring the transferred object between the carrier and the lifting device, there is no need for relay cargo handling work by a lifting machine or the like, and the working effect is improved.

The eighth means is characterized in that, in the sixth means, when an object to be transferred is transported by a carrier, the object is carried out in a horizontal rotation posture in which the lower end of the object is directed toward the center of the reactor pressure vessel. And how to handle the internal pump motor,
In addition to the function and effect of the sixth means, the transported object handled by the handling method of the internal pump motor is specifically a stretch tube nut handling tool, a secondary seal handling tool, etc. in addition to the internal pump motor. Since the lower end has a peculiar appearance with a wide upper end and a narrow upper end, the space in which the lower end rotates and moves requires a wider space than the space in which the upper end rotates. Since the locus does not go below the center of the reactor pressure vessel from the vertical position and the locus of rotation at the lower end does not go above the horizontal position, the control rod drive and other reactors standing under the reactor pressure vessel It is possible to obtain an effect that interference with an indoor device can be easily avoided.

A ninth means is the sixth means, in which the lifting nut mounting lugs of the object to be transferred are placed on a carrier truck so as to be positioned above and below in a horizontal state of the object to be transported and transported by the carrier truck. At the same time, after transferring the transferred object from the transfer carriage to an elevating device for vertically transporting,
It is a handling method of an internal pump motor, characterized in that the angle of the transported body is adjusted on the lifting device to an angle of engagement with the motor casing of the internal pump of the transported body. When transporting the lift nut mounting lugs in a vertical position, the lift nut mounting lugs are viewed from the direction of rotation of the transported object when rotating on the transport carriage. Since the lifting nut mounting lug does not protrude in the horizontal direction, it is not necessary to provide a large opening in the transport carriage in consideration of the protruding length of the lifting nut mounting lug, and the effect that the configuration of the transport carriage can be downsized, Since the action of horizontally swinging 90 degrees in the direction of the protrusion angle of the normal lifting nut mounting lug while the transported object is placed on the lifting device is obtained, suspend the transported object with a lifting machine. There is also an effect of avoiding an unstable process of horizontal turn of 90 degrees.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below.

FIG. 1 is a front view showing the structure of an embodiment of the present invention, FIG. 2 is a partial front view showing the structure of the lower part of a nuclear reactor equipped with an internal pump related to the present invention, and FIG. Two
2 is a plan view taken along line AA of FIG.

In FIG. 1, a carrier truck 11 is provided with a carriage 17 provided with a driving device for self-propelling and a motor container 15 for accommodating the internal pump motor 5 at the time of loading and unloading. A bearing portion 18 for supporting the cylindrical shaft 15a, a supporting portion 19 for maintaining the horizontal state of the internal pump motor 5, a motor container 1
The rotary drive unit 20 is connected to the rotary pump 5 to rotate the internal pump motor 5.

Further, the bearing portion 18, a structure in which a groove 18a having an open upper in semicircular shape corresponding to the cylindrical portion of the rotating cylindrical shaft 15a of the motor container 15, the rotation of the motor container 15 in the groove The motor cylinder 15 is supported by inserting the for-use cylindrical shaft 15a.

Further, the carriage 17 is provided with a rotation passage opening portion 17a for ensuring a rotation passage space when the internal pump motor 5 is raised or laid sideways.

Incidentally, two internal pump motors 5 are diagonally arranged at a lower side portion in a vertically raised state.
By assembling and mounting the motor mounting nut mounting lug 5a and the rotating cylindrical shaft 15a mounted on the motor container 15 with a phase shift of 90 °, the motor mounting nut mounting lug 5a can be vertically moved in a horizontal transport state. Since they are arranged, the space of the rotation passage opening 17a provided in the carriage 11 can be made as small as possible, and the width of the carriage 17 and the expansion of the rail span can be suppressed.

Alternatively, inside the swing platform,
The swivel table portion 24 on which the elevating device 7 is supported so as to be able to ascend and descend and the internal pump motor 5 is loaded has a bearing 2 so that the motor elevating and lowering lug position can be adjusted in the circumferential direction.
4a is attached. A pair of guide screws 23 are attached to both sides of the motor casing 2.

Next, the operation of the embodiment configured as described above will be described. Internal pump motor 5
In the work of mounting on the arbitrary motor casing 2 mounted on the reactor pressure vessel 1, when carrying by the carrying carriage 11, the internal pump motor 5 is carried sideways in the repair room outside the reactor room 21. The carriage 11 is loaded via the support portion 19 and the bearing portion 18.

In this case, the lower part of the vertically raised state is mounted toward the center of the reactor pressure vessel 1, and the carrier carriage rail 11c and the swing platform 6 installed on the floor of the equipment inlet 4 are installed. Carrier truck rail installed above
The motor casing 2 is moved on 11b and is on the same pitch circumference as the motor casings 2 arranged in the reactor chamber 22 below the reactor pressure vessel 1 at equal pitches of 10 units.
2 when the carrier platform rail 11b is positioned on the carrier carrier rail 11c installed on the floor of the equipment entrance 4 when the carrier platform rail 11b is positioned in the space between them and is rotated.
The electric chain block 12 installed at the intersection with the center of the book carrier rail 11b is stopped at the lifting position.

After that, with the position of the carriage 11 fixed, the internal pump motor 5 is rotated by the rotary drive unit 20 and vertically erected.

At this time, the lower portion of the internal pump motor 5 enters the space below the rotation passage opening 17a of the carriage 11 and the opening between the carriage rails 11b of the turning platform 6, so that it is compared with the conventional method. As a result, the radius of rotation of the internal pump motor 5 becomes smaller, and no interference with peripheral devices such as the control rod drive mechanism 9 and the pipe group 10 occurs.

After that, the electric chain block 12 is attached to the hanging ear 8 and the electric chain block 12 is wound up to be lifted from the bearing portion 18 of the carrier 11 until the lower end surface of the rotating cylindrical shaft 15a is completely detached.

Next, the carrier 11 is retracted into the equipment loading port 4, the lifting device 7 installed on the turning platform 6 is turned to a position directly below the internal pump motor 5, and the turning table 24 of the lifting device 7 is turned on. To sit on.
Next, the fastening between the internal pump motor 5 and the motor container is released, only the motor container is lifted through the electric chain block 12, the elevating device 7 is lowered, and the internal pump motor 5 is stored in the turning platform 6. Then the turning platform 6 pivoted movement to position the transport carriage rails 11c which is installed a transport carriage rails 11c on the floor of the apparatus entrance 4 again. Next, the carrier vehicle 11 is loaded into the reactor chamber 22, the bearing portion 18 of the carrier vehicle 11 is stopped immediately below the rotating cylindrical shaft 15a of the motor container, the motor container 15 is lowered, and the motor container 15 is moved. The rotating cylindrical shaft 15a is seated on the bearing 18 of the carrier 11. After that, the motor container 15 is laid down by the reverse procedure of raising the internal pump motor 5, and then the electric chain block 1
2 is removed and the carrier vehicle 11 is moved and carried to the repair room outside the reactor room 21.

[0029] Thereafter, to stop the motor casing 2 bottom of the installation position and the internal pump motor 5 housed in the pivoting platform 6 increase at lifting apparatus seven bodies.

Next, when the internal pump motor 5 was mounted on the carriage 11, the lifting nut mounting lug 5a was carried in by rotating the phase angle by 90 °. By swiveling the swiveling table 24 installed in the device 7 by 90 °, the angle of engagement with the motor casing 2 can be returned to the normal position. After that, the lifting device 7 and the guide screw 23 are used to install the target motor casing 2.

When the internal pump motor 5 is removed, the above procedure is reversed.

When handling the equipment other than the internal pump motor 5, the secondary seal handling tool 14, and the stretch tube nut handling tool 13, the same construction and procedure as the handling of the internal pump motor 5 are performed.

A second embodiment of the present invention will be described below with reference to FIGS.
Will be explained.

FIG. 3 is a plan view showing the structure of the second embodiment.

As shown, the swivel platform 6
On both sides of the opening 7a of the lifting device 7 installed inside, there are installed carrier truck rails 11b which are installed on the floor of the equipment carry-in port 4 and which are compatible with the carrier truck rails 11c.
The trolley 17 is provided with a notch 17a on the central side of the reactor in the longitudinal direction.

Next, the operation of the embodiment configured as described above will be described.

The procedure up to the loading and rotating operation of the internal pump motor 5 is the same as that of the first embodiment, and will be omitted.

Platform 6 before carrying in the carrier 11
The lifting device 7 installed in the internal pump motor 5
Placed in advance at the delivery position, the opening of the lifting device 7
Conveying carriage rail 11b which on both sides compete with the transport carriage 11
By installing the carrier 1
You can enter 1.

Next, the transport carriage 11 is stopped at the position where it is raised by the internal pump motor 5 at the position where it is raised and lifted by the operation of the rotary drive unit 20, and then the lifting device 7 is moved upward. Let direct turning table 2
Seat 4 Next, the electric chain block 12 is attached to the hanging ear 8, the fastening of the internal pump motor 5 and the motor container 15 is released, and the electric chain block 12
The internal pump motor 5 can be pulled out by hoisting it through and lowering the lifting device 7.

After that, the carrier 11 is retracted to the equipment entrance 4, and the revolving platform is raised by the reverse procedure of raising the internal pump motor 5 and the motor container 1.
After laying 5 down, it is carried out to the repair room outside the reactor room 21. The subsequent procedure is the same as that of the first embodiment, and therefore will be omitted.

The third embodiment of the present invention will be described below.

FIG. 1 is a front view showing a configuration of an embodiment of the present invention, FIG. 2 is a plan view of FIG . 1, and FIG . 5 is a front view of an internal pump motor related to the present invention.

In FIG . 8 , the secondary seal handling tool lifting device 25 is separately installed from the lifting device 7 for the internal pump motor 5, and is mounted inside the swivel platform 6 so as to be lifted and lowered. Device 7
Is configured similarly to.

The operation of the embodiment configured as described above will be described.

After removing the internal pump motor 5,
Alternatively, after the secondary seal 26, which is a component of the internal pump 3, is removed and inspected and parts are replaced before installation,
Although the secondary seal handling tool 14 is used for reattachment, as with the internal pump motor 5, the secondary seal handling tool 14 needs to be carried in and out to the repair room outside the reactor room 21, but under the floor of the revolving platform 6 By storing and storing,
The swivel platform 6 is swiveled to the target motor casing 2 position, and only the lifting and lowering operation is performed via the secondary seal handling tool elevating device 25, which eliminates the need for loading and unloading work of the secondary seal handling tool by the carrier 11. can do.

As described above, according to each embodiment of the present invention, when inspecting the internal pump, the internal pump motor, the secondary seal handling tool, and the stretch tube handling tool, which are the objects to be transported, are erected from the side. When tilting upside down or standing upside down, the lower space of the carrier and swivel platform can be used effectively to avoid interference with the peripheral equipment of the piping group and control rod drive mechanism regardless of the length of the above equipment. Therefore, it becomes possible to fix the transport carriage at the same stop position and perform the rotation work, which shortens the work time and the required manpower. Further, by carrying in the lower part of the above-mentioned equipment in a vertically raised state toward the center of the reactor pressure vessel, it is possible to avoid interference with the outer periphery of the swiveling platform during the rotating operation. As an effect peculiar to the second embodiment, the capacity of the electric chain block is reduced because only the motor container is hoisted by disposing the carrier on the hoisting device of the turning platform and directly transferring it to the hoisting device. You can Third
As an effect peculiar to the embodiment, since the lifting device dedicated to the secondary seal handling tool is provided in the turning platform to store and store the secondary seal handling tool, the loading and unloading work is reduced, and the work efficiency is improved. And safety is ensured.

[0047]

According to the first aspect of the present invention, since the radius of rotation of the transported object above the transport carriage is reduced, complicated work for avoiding an interference accident when the transported object is inverted is reduced. And, the receiving of the transported object between the transport vehicle and the lifting device.
Since the delivery work can be accomplished by omitting the relay cargo handling work,
It is possible to provide an apparatus that can reduce the handling work time of the carrier.

According to the second aspect of the invention, the machine in the reactor room
Rotation of the transported object that was performed to avoid interference with the container
Operation and the horizontal movement of the carrier truck
In addition to reducing the time and effort required for confirmation work, etc., it is also used as a carrier and lifting device.
Relay cargo handling work at the time of delivery of the transported object to and from
Since it does not take much time, the delivery work can be done efficiently in a short time
It is possible to provide a method of handling an internal pump motor that can be made.

According to the invention of claim 3, the invention of claim 2
In addition to the effect of
Can provide a work method that can reduce the most interference accidents in the industry
The effect is obtained.

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a partial front view showing the configuration of the lower part of a nuclear reactor equipped with an internal pump related to the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is a front view of an internal pump motor according to the present invention.

FIG. 6 is a front view of a stretch tube nut handling tool related to the present invention.

FIG. 7 is a front view of a secondary seal handling tool related to the present invention.

FIG. 8 is a plan view showing a third embodiment of the present invention.

FIG. 9 is a sectional view showing the structure of an internal pump according to the present invention.

FIG. 10 is a view showing an embodiment of the present invention, and is a side view of the carrier truck of FIG. 1 as viewed from the left side surface.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Reactor pressure vessel, 2 ... Motor casing, 3 ... Internal pump, 4 ... Equipment loading port, 5 ... Internal pump motor, 5a ... Internal pump motor lifting nut mounting lug, 6 ... Swivel platform, 7 ... Lifting device, 8 ... Hanging ear, 9 ... Control rod drive mechanism, 10 ... Piping group,
11 ... Transport trolley, 11a ... Transport trolley notch, 11
b, 11c, 11d ... carrier truck rail, 12 ... electric chain block, 13 ... stretch tube nut handling tool,
14 ... Secondary seal handling tool, 15 ... Motor container, 15
a ... Cylindrical shaft for rotation, 16 ... Driving device, 17 ... Bogie, 17
a ... Rotation passage opening portion, 18 ... Bearing portion, 18a ... Groove, 1
9 ... Support part, 20 ... Rotation drive part, 21 ... Outside of reactor room, 2
2 ... Reactor chamber, 23 ... Guide screw.

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Seiichi Matsumura 3-1-1, Saiwaicho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi factory (72) Inventor Hironari Umemori 3-chome, Saiwaicho, Hitachi City, Ibaraki Prefecture No. 1-1 Hitachi Ltd., Hitachi Factory (72) Inventor Hiroyuki Miyamoto 3-1-1, Saiwaicho, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Hitachi Factory (72) Inventor, Kazuo Tanai, Aise Town, Hitachi City, Ibaraki Prefecture 2-9-1 Nikki Equipment Engineering Co., Ltd. (72) Inventor Koichi Hashimoto 2-9-1 Aize-cho, Hitachi City, Ibaraki Nikko Equipment Engineering Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 5-188182 (JP, A) JP 56-1390 (JP, A) JP 2-309298 (JP, A) JP 5-188175 (JP, A) JP 61-88191 ( (58) Fields surveyed (Int.Cl. ⁷ , DB name) G21C 19/02 G21C 15/243

Claims (3)

(57) [Claims] 1. A platform that is horizontally rotatably installed below a reactor pressure vessel, an elevating device mounted on the platform, and an object to be transported in and out in the horizontal direction.
The vertical direction and the horizontal side of the center of the reactor, which is wide enough to rotate up and down, have a notch for the carrier, and a carrier that is mounted on the carrier. Supporting means for rotatably supporting in a direction, a traveling path of the carrier vehicle equipped on the platform, and a notch portion of the platform opened in the up-down direction provided in a platform portion between the traveling paths. The transport carriage is equipped with a rotation support point of the rotation support means at a height position such that the radius of rotation of the lower end of the transported object is below the traveling road surface of the transport carriage. Internal pump motor handling device characterized by. 2. A transferred object moves in and out horizontally and rotates up and down.
As much as possible, the vertical direction and the horizontal one end side of the reactor center side
The carrier is opened on the carrier having a notch.
The radius of gyration at the lower end of the transported object is below the wheel of the carriage.
The transported object is supported rotatably up and down,
When transporting the transported object with the transport cart, keep the transported object horizontal.
In a rotating position that
When passing the transferred object from the transfer carriage to the lifting device,
By lowering the lower end of the transported object by rotation,
The lower end of the transported object reaches below the wheels of the transport vehicle.
After performing the vertical rotation posture,
When receiving the carrier by receiving it to the carrier
By rotating and raising the lower end of the transported object,
Make sure that the transported object is in a horizontal posture, and
For the transfer of the transported object between the trolley and the lifting device
When the carrier is in the vertical rotation posture,
By moving the lifting device up or down,
Internals directly transferred between the car and the lifting device
How to handle the pump motor. 3. The object to be conveyed according to claim 2, which is a carriage.
A method for handling an internal pump motor, wherein the lower end of the transferred object is horizontally rotated so that the lower end of the transferred object faces the center of the reactor pressure vessel.