JP2000049025A - Method and operation device for erecting iron core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize an erection action, to reduce an erection work space, and to shorten a transformer assembly period by lifting an erector upper part with a partially-bent lower tank and a bent bilge frame as a supporting point so that an iron core is elected upright with a deflected surface as a guider. SOLUTION: An erection-employment combination lower tank and an erection frame 1 are connected for fixing so that a main body supporting frame where an iron-core supporting stage is formed, the erection-employment combination lower tank, and an reinforcing stay 5 are integrated to one body, with an L-like frame 6 for connecting/fixing the erection frame 1, the erection-employment combination lower tank, and the reinforcing stay 5 being connected. A wire 10a of a lifting device is engaged with a hook 9 for winding-up by the lifting device, and an iron-core erection operation device is erected with the deflected surface between the erection frame 1 and the erection-employment combination lower tank, and, the reinforcing stay 5 and a bent bilge frame 7 as a supporting point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for erecting an iron core and a working device used for erecting the iron core. .

[0002]

2. Description of the Related Art In recent years, 500 k
Expansion of v-system is planned. However, as power equipment has become larger due to its larger capacity and higher voltage, the location conditions of power plants and substations are strict, and solving the problems of weight and size to be transported is a major point. In such a background, the core and coil of the heavy transformer must be disassembled and transported individually to reduce the transport weight and size, and to solve the transportation problems. .

[0003] In such a disassembled and transported transformer, the contents of the transformer are assembled on site, such as assembling an iron core and combining an iron core and a winding. In these operations, it is common practice to install an assembling house on site to minimize dust or moisture entering from the outside and to ensure the reliability of the equipment.

As a method of assembling an iron core in the field, a method using a lifting-type iron core erecting device as shown in FIG. 14 has conventionally been adopted. In this method, the iron cores 4a and 4b installed in the horizontal direction are arranged on the pedestal 27, and
a, the lower tank 5 is installed below the 4b, and the iron cores 4a,
4b, the upright frame 1 and the boat bottom frame 7 extending from the side surface to the bottom surface have a curved surface, and the upright frame 1 is mounted so that the curved surface is in contact with the ground.
In the boat bottom frame 7, the upper end of the standing frame 1 is guided by a curved surface using a power of a crane, a jack or the like, and the iron core is raised.

[0005]

When a disassembled and transported iron core is assembled in a local assembling house, when a conventional lifting-type iron core erecting device as shown in FIG. The workplace dimensions required for the core upright operation device are greatly required, and it is difficult to perform the core upright operation on a limited local concrete foundation. In addition, a complicated work such as setup and dismantling work is greatly required by the standing work with the iron core alone or the lower tank of the transformer attached using the working device of FIG. A lot of construction cost is required. In addition, the strength of the frame and the frame structure in which the center of gravity does not move outside the fulcrum must be secured by installing a curved bottom frame on the lower surface of the lower tank and erecting it. Requires a great deal of time, and a large amount of upright working space.

[0006] The present invention has been made in view of the above points,
The purpose is to stabilize the erecting operation, eliminate the safety problem, of course, does not require complicated work for the purpose of reducing the space required for erecting work and shortening the transformer assembly period, and An object of the present invention is to provide an iron core erecting method for reducing the weight of a working device and a working device thereof.

[0007]

In order to achieve the above object, according to the present invention, when erecting an iron core of a transformer, the iron core is arranged on a horizontal loading portion of the iron core erecting device, and the iron core is provided at a lower portion of the erecting device. A lower tank of a partially curved transformer is installed, and a curved frame is further installed below the transformer. In this state, the partially curved lower tank and the curved bottom frame are used as fulcrums, and By lifting the part, the curved surface is guided, and the iron core is vertically erected.

Further, the present invention provides a method in which a plurality of upright frames are arranged on a base embedded in a concrete foundation, a plurality of iron core cradles are arranged on the upright frames, and a plurality of main legs are arranged on the iron core cradle. An iron core is formed by connecting the lower yoke by an ironing operation, a lower tank of a transformer having a curved portion is installed below the erecting device, and an L-shaped frame connecting the erecting frame and the lower tank is lowered. Attach a curved boat bottom frame with a curved part to the lower part of the tank, and configure the upper end upper part as a standing frame with a suspended part that can be lifted, hook the wire on the lifting device on this standing frame, and in this state The lifting device guides the curved surface and raises the curved surface.

Further, the iron core is erected by the above erecting method, the elevating operation is suspended at an arbitrary angle during the elevating operation, and a suspension part for hanging a wire on the erecting frame and the partially curved lower tank is provided. Between the upright frame and the lower tank and the curved bottom frame, which is connected to a towing device, is towed in a direction opposite to the upright direction, and is in contact with the upper surface of the base embedded in the concrete foundation. By sliding, the entire standing device is moved, and after obtaining any amount of movement,
Again, the curved surface is guided by the lifting device to vertically erect the iron core.

Further, in the present invention, an iron core erecting device in which an iron core is arranged on an iron core cradle on an erecting frame, a curved lower tank and a curved boat bottom frame installed below the erecting device, and the erecting frame. An L-shaped frame for connecting the lower tank to the lower tank, wherein the partially curved lower tank and the curved frame are used as a fulcrum, and an upper end of the erecting device is lifted to guide the curved surface and erect the iron core vertically. It is characterized by a standing work device.

Each of the frames constituting the above-described iron core standing work apparatus is a detachable combination and can be dismantled and transported. The above-mentioned curved lower tank forms a part of the lower tank as a product. It is possible to make it a curved, lower tank which also has a jig for erecting the iron core, and to be a fulcrum in the erecting process of the iron core. Further, the L-shaped frame has a partially curved lower tank and a partially curved lower tank. The upright frame is connected so as to compensate for the strength of the upright device during the upright operation.

Further, the above-mentioned curved boat bottom frame is installed on the bottom surface of the lower tank, and in the process of lifting and erecting the iron core erecting device, the overall total center of gravity of the iron core and the iron core erecting work device is combined with the lifting device. When the erection is performed with the curved surface as a fulcrum, the center of gravity moves out of the fulcrum during and after erecting, and the iron core overruns. By taking the curved shape of the detachable standing frame, the curved lower tank, and the curved bottom frame that do not exceed the position, the point of lifting by the lifting device is one point.

In the present invention, the lower tank is provided with a suspension portion on which a wire is hung, and the wire is connected to a traction device, and the other wire of the traction device is hooked on an end of the concrete foundation. Also, by a towable configuration with a suspension part on which a wire can be hung, by pulling up the towing device, tow in the opposite direction to the standing direction,
An iron core erecting device slide mechanism that slides between the erecting frame and the lower tank and the curved bottom frame, which is in contact with the upper surface of the base embedded and installed in the concrete foundation, and moves the entire erecting device. And

In a configuration in which the base frame embedded in the concrete foundation is slid between the upright frame and the partially curved lower tank and the curved boat bottom frame, which are in contact with the upper surface of the base, the base is embedded in the concrete foundation. When the upright frame, the lower tank, and the curved boat bottom frame constituting the iron core upright working device are installed with a smooth plate on the upper surface of the base, the lower surface is placed on the ground surface serving as a fulcrum of the curved surface. It is preferable to install a friction sliding material and slide the entire erecting device. Also,
In the present invention, a clamp is installed on an iron core installed on a plurality of iron cradles forming an iron core upright work device, and the iron cradle and the tightening metal are connected and fixed by a rod, and a plurality of each are arranged. The fastening metal fittings are connected by means of hanging metal fittings, thereby forming a transporting metal fitting that can be moved by lifting when transporting the iron core alone.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a side view showing a setup operation and an iron core assembling operation before the erecting operation of a core erecting operation device of a transformer using an iron core erecting operation device according to an embodiment of the present invention. As shown in FIG. 1, in the present embodiment, the upright frame 1 and the horizontal frame 2 are connected, and by further connecting and fixing the iron core cradle 3 a and the iron core cradle 3 b to the horizontal frame 2,
An iron core support is formed, and the iron cores 4a and 4b are installed. In this state, elevating platforms 24a and 24b are installed below the iron cores 4a and 4b and below the standing frame 1, and a lower yoke 25 and a worker 26 ride on the lower yoke 25 and the lower yoke 25 below the iron cores 4a and 4b. Perform the ironing work.

FIG. 2 is a side view of an iron core upright operation device of a transformer using the iron core upright operation device according to one embodiment of the present invention, FIG. 3 is a plan view of the iron core upright operation device, and FIG. 1 shows a bird's-eye view of an iron core standing operation device.

In FIG. 2, FIG. 3, and FIG. 4, after the ironing operation of FIG. 1 is completed, the standing and hiring type lower tank 5 is connected and fixed to the standing frame 1, and the main body support having the iron core supporting base is formed. The frame is integrated with the standing and combined use lower tank and the reinforcing stay 5, and an L for connecting and fixing the standing and combined use lower tank and the reinforcing stay 5 to cope with securing strength during standing. The character frame 6 is connected.
Also, in order to stabilize the iron cores 4a and 4b during the standing operation,
A jack 30 is provided between the L-shaped frame 6 and the lower fastener 29.
The L-shaped frame 6 is provided with a stay 33 having a hole to which the rod 31 can be connected.
1 is connected and fixed. Further, a curved boat bottom frame 7 is fixed below the standing and combined use type lower tank and reinforcing stay 5, so that the center of gravity does not move outside the fulcrum at the time of standing. Further, a hook 9 having a suspension portion is provided on the horizontal frame 8 for lifting on the standing frame 1, and the iron core is raised by lifting. In addition, using the shapes of the curved surfaces of the standing frame 1, the standing and combined use lower tank, the reinforcing stay 5, and the curved boat bottom frame 7, the curved surface is used as a guide for standing. In addition, a towing hook 1
3 and a structure in which the entire upright working device can be moved by pulling the upright hiring type lower tank and the reinforcing stay 5 during the erecting operation. In addition, each frame that constitutes the iron core standing work device described above is dismantled,
It has a detachable structure that enables transport.

FIG. 5 is a side view of the construction of the core upright operation device of the transformer showing a curved surface shape without movement of the fulcrum of the iron core upright operation device according to one embodiment of the present invention.

As shown in FIG. 5, the shape of the curved surfaces of the upright frame 1, the upright hiring type lower tank, the reinforcing stay 5, and the curved boat bottom frame 7 at any angle θ during the lifting by lifting. Due to the combination of the plurality of arcs, the position of the total center of gravity g, which is the combination of the two centers of gravity of the iron cores 4a and 4b and the entire upright working device, takes an arc shape that does not move outside the fulcrum than the fulcrum a. Is located inside the fulcrum a, so that the portion to be lifted is one point.

FIG. 6 is a side view showing a state before standing in the standing operation. In the state where the configuration of the iron core upright working device of FIG. 2 is formed, the lifting horizontal frame 8 is connected and fixed to the raising frame 1, and the hook 9 is attached to the lifting horizontal frame 8.
And the wire 10a of the lifting device is connected to the hook 9
And the hoisting operation is carried out by the hoisting device, so that the armature erecting work device is erected with the curved surface of the erecting frame 1 and the erecting and lowering type lower tank and the reinforcing stay 5 and the curving bottom frame 7 as a fulcrum. . In addition, the shapes of the curved surfaces of the standing frame 1, the standing lower combined use tank, the reinforcing stay 5, and the curved boat bottom frame 7 are as follows.
The center of gravity g moves out of the fulcrum from the fulcrum where the upright frame 1, the lower tank and the reinforcement stay 5, and the curved bottom frame 7, which are combined with the erection, are grounded with the base 12 embedded in the concrete foundation 11. It has a shape that does not have an iron core. Further, a towing hook 13 is fixed to the upright frame 1, and a towing jig 1 having a suspension portion on the left end of the foundation concrete 11 for hooking a wire 10 b is provided.
4 is fixed, and the traction device 15 is hooked between the traction jig 14 and the traction hook 13 to form a traction mechanism capable of traction operation. In this state, the iron core can be lifted by the lifting device to erect.

FIG. 7 is a side view showing a state during the standing operation in the standing operation. During the lifting, the core standing operation device temporarily suspends the lifting at an arbitrary angle, and the traction mechanism shown in FIG. 6 winds the wire 10 b with the traction device 15 to pull the core rising operation device fixed by the traction hook 13. On the upper surface of the base 12 embedded and installed in the concrete foundation 11, the standing frame 1 and the standing and hiring type lower tank, the reinforcing stay 5 and the curved bottom frame 7 are grounded and slipped, so that the iron core standing is formed. The working device can be moved, and moved to an arbitrary position on the concrete foundation 11 described above.

FIG. 8 is a side view showing a state after standing in the standing operation. When the standing frame 1 is vertical, the iron core 4
The lower tanks a and 4b stand up, and the lower tank and reinforcing stay 5 and the iron cores 4a and 4b are supported by the curved bottom frame 7. Thereafter, the upright frame 1, the horizontal frame 2, the iron core cradle 3a, the iron core cradle 3b, and the L-shaped frame 6 are removed, and the lower tank and the reinforcing stay 5 are used.
And the cores 4a and 4b are brought upright by removing the curved boat bottom frame 7.

FIG. 9 is a side view showing a state in which the core is erected using the core erection work device in the assembly house. Figure 1
The core erecting operation by the iron core erecting operation device described in FIG. 2 and FIG. 3 enables the core erecting to be performed in the limited assembly house 16 by using both the lifting operation and the towing operation.

FIG. 10 is a sectional view of a sliding portion of the traction mechanism, and FIG. 11 is a side view of the sliding portion. A slide, which is a low-friction sliding material, is adhered and fixed to a plate 17 at the portion of the standing frame 1 and the standing lower tank and the reinforcing stay 5 and the curved bottom plate 7 that will be the grounding surface when the iron core stands. The bearing 18 is mounted before the erecting work, and a mirror-finished iron plate 19 is installed on the upper surface of the base 15 embedded in the concrete foundation 11 so as to slide between the slide bearing 18 and the iron plate 19. I have.

FIG. 12 is a side view showing the iron core transport bracket, and FIG.
3 shows a front view of the iron core transport bracket. In FIGS. 12 and 13, the iron core 4 is placed on the iron core receiving base 3 b, which is one of the members forming the iron core upright working device described in FIG. 1.
Is installed on the iron cores 4a and 4b, and the iron core support 3b and the fastener 20 are connected and fixed by the rod 21, and a plurality of the fasteners 2 are arranged.
0 are connected by a suspending bracket 22 to form a transport bracket that can be moved by lifting when transporting the iron core. In addition, the loading and unloading of the transport vehicle can be performed by the hanging metal fittings 22, which can be directly connected to the iron core erection work device, and the member forming the iron core erection work device and the member forming the transport metal fitting have a dual structure. I have.

As described above, according to the present embodiment, the lower tank and the reinforcing stay 5 are also used as the standing and hiring type and the reinforcing stay 5 can be used as the standing and hiring operation, and can be raised by using the curved portion. The setup work can be reduced while the work can be eliminated, and the work of mounting the iron core on the lower tank or the work related to the work can be eliminated at the same time.

Further, by using the lifting operation and the pulling operation together, it is possible to easily avoid the limitation of the work range in the limited assembly house 16 installed on the concrete foundation 11 at the site. Dimensions can be reduced. Furthermore,
When the iron cores 4a and 4b are disassembled and transported by using the iron core cradle 3b which also forms the upright operation device as a transporting bracket and installed on the upright operation device at the site, the iron core on which the iron cores 4a and 4b are loaded. Since the cradle 3b can be directly connected to the iron core cradle 3a, no special transport bracket is required, and the assembling work of the iron core erection work apparatus and the iron core assembling work period can be shortened.

[0029]

As described above, according to the present invention,
By using the lower tank for combined use of erection and hiring, and erecting the iron core, not only can the structural size of the erection work device be reduced, but also the effect of reducing the setup work time can be achieved, and complicated work is not required. The practical effect is great. In addition, the required size of the work required for the iron core erecting work device in the local assembly house can be minimized, and there is an effect that the core erecting work space on the limited local concrete foundation can be effectively utilized. In addition, by taking a structure in which a transport bracket that can be moved by lifting when transporting the iron core is formed by an iron core cradle, which is one of the members that form the iron core erecting operation device, the setup work required for the alignment of the iron core can be performed. This has the effect of being able to reduce the time required for the upright work.

[Brief description of the drawings]

FIG. 1 is a side view showing a setup operation and an iron core assembling operation before erecting in a core erecting operation device configuration of a transformer using an iron core erecting operation device according to one embodiment of the present invention.

FIG. 2 is a side view showing a configuration of a core upright operation device of a transformer using the core upright operation device according to one embodiment of the present invention.

FIG. 3 is a plan view showing a configuration of a core upright operation device of a transformer using the core upright operation device according to one embodiment of the present invention.

FIG. 4 is a bird's-eye view showing a configuration of a core upright operation device of a transformer using the core upright operation device according to one embodiment of the present invention;

FIG. 5 is a side view showing the configuration of the core upright operation device of the transformer, which has a curved surface shape without moving out of the fulcrum of the iron core upright operation device according to one embodiment of the present invention.

FIG. 6 is a side view showing a state before standing in the standing operation.

FIG. 7 is a side view showing a state during standing in the standing operation.

FIG. 8 is a side view showing a state after standing in the standing operation.

FIG. 9 is a side view showing a state in which the core is erected using the core erection work device in the assembly house.

FIG. 10 is a sectional view showing a sliding portion in the traction mechanism.

FIG. 11 is a side view showing a sliding portion in the traction mechanism.

FIG. 12 is a side view showing an iron core transportation fitting.

FIG. 13 is a front view showing an iron core transportation fitting.

FIG. 14 is a side view showing a configuration of a core upright operation device of a transformer using the core upright operation device according to the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Standing frame, 2 ... Horizontal frame, 3a, 3b ... Iron core receiving stand, 4a, 4b ... Iron core, 5 ... Standing and hiring type lower tank and reinforcement stay, 6 ... L-shaped frame, 7 ... Curved boat bottom frame, 8 ... horizontal frame for lifting, 9 ... hook, 1
0a, 10b: wire, 11: concrete foundation, 12
… Base, 13… traction hook, 14… traction jig, 15…
Traction device, 16 ... Assembly house, 17 ... Plate, 18 ...
Slide bearing, 19: iron plate, 20: fastening fitting, 21: rod, 22: hanging fitting, 23: spacer, 24a, 24b: lifting platform, 25: lower yoke, 26
... Worker, 27 ... Cradle, 28 ... Lower tank, 29 ... Lower clamp, 30 ... Jack, 31 ... Rod, 32 ... Boss, 3
3. Stay.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuyuki Kiuchi 1-1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture Inside Kokubu Equipment Engineering Co., Ltd. (72) Inventor Hiroyuki Sanbe 1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture No. 1 Inside Hitachi Kokubu Factory (72) Inventor Katsutoshi Akatsu 1-1-1 Kokubuncho, Hitachi City, Ibaraki Prefecture F-term inside Hitachi Kokubu Factory 5E059 AA03 LL02

Claims (11)

[Claims] When an iron core of a transformer is erected, an iron core is arranged on a horizontal loading portion of the iron core erecting device, and a lower tank of a partially curved transformer is installed below the erecting device. A curved frame is installed at the bottom, and in this state, the partially curved lower tank and the curved boat bottom frame are used as a fulcrum,
A method for erecting an iron core, comprising raising an upper part of an erecting device to guide a curved surface and erect the iron core vertically. 2. A plurality of upright frames are arranged on a base embedded and installed in a concrete foundation, a plurality of iron core cradles are arranged on the upright frame, and a plurality of main legs are arranged on the iron core cradle to form a lower yoke. The iron core is formed by joining by ironing work, a lower tank of a transformer having a curved portion is installed at the lower part of the erecting device, and an L-shaped frame for connecting the erecting frame and the lower tank is installed. A curved boat bottom frame having a curved portion is attached to the lower part of the tank, and the upper end is configured as an upright frame having a suspendable portion that can be lifted. The wire of the lifting device is hooked on the upright frame, and in this state, A method for erecting an iron core, wherein a lifting device guides a curved surface to erect the iron core vertically. 3. A plurality of standing frames are arranged on a base embedded and installed in a concrete foundation, a plurality of iron core pedestals are arranged on the standing frame, and a plurality of main legs are arranged on the iron core pedestal to form a lower yoke. The iron core is formed by joining by ironing work, a lower tank of a transformer having a curved portion is installed at the lower part of the erecting device, and an L-shaped frame for connecting the erecting frame and the lower tank is installed. A curved boat bottom frame having a curved portion is attached to the lower part of the tank, and the upper end is configured as an upright frame having a suspendable portion that can be lifted. The wire of the lifting device is hooked on the upright frame, and in this state, The lifting device guides the curved surface to guide the iron core vertically, suspends the lifting at an arbitrary angle during the lifting, and stops the lifting frame and the partial bay. The upright frame connected to a pulling device, a wire hung on a suspension portion provided in the lower tank of the shape, towed in a direction opposite to the upright direction, and grounded to the base upper surface embedded and installed in the concrete foundation, and The entire standing device is moved by sliding between the lower tank and the curved bottom frame, and after obtaining an arbitrary moving amount, the lifting device guides the curved surface again to vertically move the iron core. A method for erecting an iron core, comprising: erecting an iron core. 4. An iron core erecting device in which an iron core is arranged on an iron core cradle on an erecting frame, and a curved lower tank and a curved boat bottom frame arranged below the erecting device are connected to the erecting frame. An L-shaped frame is provided, and the lower tank, the partially curved frame, and the partially curved bottom frame are used as fulcrums, and the upper surface of the upright device is lifted to guide the curved surface so that the iron core is vertically extended. An iron core erecting work device characterized by being erect. 5. The iron core upright working device according to claim 4, wherein each of the frames constituting the iron core uprighting working device is a detachable combination and can be dismantled and transported. 6. The curved lower tank is characterized in that a part of the lower tank of the transformer is curved, the lower tank is also provided with a jig for erecting an iron core, and is used as a fulcrum in the erecting process of the core. The iron core upright working device according to claim 4. 7. The L-shaped frame connects a partially curved lower tank and a partially curved upright frame to compensate for the strength of the upright device during the upright operation. Iron standing work equipment. 8. The curved boat bottom frame is installed on the bottom surface of the lower tank, and in the process of lifting and erecting the iron core erecting device, the overall center of gravity of the combined core and the iron core erecting work device is adjusted by the hoisting device. When standing up with the curved surface as a fulcrum, the center of gravity moves out of the fulcrum during and at the time of erecting, and the detachable upright frame, the curved lower tank and the curved bottom frame that do not exceed the position of the center of gravity outside the fulcrum 5. The iron core upright working device according to claim 4, wherein the lifting portion is formed at one point by taking the shape. 9. A suspension for hanging a wire on a lower tank of the transformer, connecting the wire to a traction device,
And the other wire of the traction device is provided with a suspension portion which is hung on the end of the concrete foundation, pulled by the winding of the traction device in the opposite direction to the rising direction, and embedded in the concrete foundation and installed. An iron core erecting device slide mechanism, which slides between an erecting frame, a lower tank, and a curved boat bottom frame that are in contact with the upper surface and moves the entire erecting device. 10. A structure in which the base frame embedded in the concrete foundation is slid between the upright frame, the partially curved lower tank, and the curved boat bottom frame, which is in contact with the upper surface of the base, embedded in the concrete foundation. A ground plate that is a fulcrum of a curved surface when the upright frame and the lower tank and the curved boat bottom frame that constitute a core upright work device are installed with a smooth plate on the installed base upper surface. 10. An iron core erecting device slide mechanism according to claim 9, wherein a low friction sliding member is installed on the erecting device to slide the entire erecting device. 11. A fastening device is installed on an iron core installed on a plurality of iron cradles forming an iron core upright working device,
The iron core cradle and the fastening bracket are connected and fixed by a rod, and the plurality of fastening brackets respectively are connected by a hanging bracket to form a transport bracket that can be moved by lifting when transporting the iron core alone. Iron core transportation fittings.