CN219163188U

CN219163188U - Dry-type transformer coil shedder

Info

Publication number: CN219163188U
Application number: CN202222947551.1U
Authority: CN
Inventors: 贾彦芳; 杨明安; 周峰峰
Original assignee: Shandong Chuangxin Electrical Equipment Co ltd
Current assignee: Shandong Chuangxin Electrical Equipment Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-09
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a coil demoulding device of a dry-type transformer, which belongs to the technical field of transformer production and comprises a fixing piece and four screws which are arranged on the fixing piece and are positioned in the vertical directions of four opposite angles, wherein each screw is sequentially penetrated with a pressing plate and a locking nut from bottom to top, one end of the pressing plate is provided with a groove, a chute is also arranged on the pressing plate along the axial direction, the chute width of the pressing plate chute is larger than the outer diameter of the screw, the screw is allowed to freely rotate in the pressing plate chute, and the locking nut is tightly matched and locked with the screw through a threaded structure. By adopting the demoulding device provided by the utility model, an operator only needs to press the lower panel of the transformer mould along the sliding chute sliding pressing plate, the coil is hoisted by using the travelling crane by tightening and fixing the four locking nuts, the operation is convenient and quick, the demoulding efficiency is high, and the damage to the coil is avoided.

Description

Dry-type transformer coil shedder

Technical Field

The utility model relates to the technical field of transformer production, in particular to a coil demoulding device of a dry-type transformer.

Background

In the current production, the mode of manual demoulding is adopted when the coil of the dry-type transformer is cast and demoulded, downward pulling force is applied to the bottom of the mould, the mould core is lifted by a crane and removed and demoulded at the top, the labor intensity of workers is high, the safety cannot be ensured, the coil or the mould is possibly damaged due to slight carelessness, meanwhile, the demoulding efficiency is low, and a plurality of people are required to operate simultaneously.

The patent publication "dry-type transformer coil pouring demolding tool" (application number: 20166208807. X) provides a scheme of demolding by fixing a coil by using a press nail, but in the technology, the press nail is in point contact with the coil, so that the local pressure on the coil is high to overcome the large gravity of the coil, and the coil is easy to deform and damage.

The disclosed patent 'a demoulding device of a dry-type transformer coil assembly' (application number: CN 201821145120.0) provides a demoulding device, a hinged seat capable of horizontally sliding on a fixedly installed base is arranged, the hinged seat is in threaded connection with a connecting rod through a locking sleeve, and downward pressure is applied below a mould; and a pressing plate is arranged on the upper end surface to apply downward pressure so as to release the mold. When the mold is used, the mold is required to be straightened, the position of the twisting seat is adjusted, the connecting rod is erected, the connecting rod is kept in a vertical state through the locking sleeve, the pressing block is arranged on the connecting rod, the mold core is pulled out through the hanging ring, and when the mold is removed, a worker is required to lock the four locking sleeves and screw up nuts at the four top ends, so that the operation process is time-consuming and labor-consuming; meanwhile, the force application point of the structure is only on the upper surface of the die, the bottom winch seat is in a sliding state, the upper end of the connecting rod is also in a sliding state, and the four points of the connecting rod easily slide in the hoisting process, so that potential safety hazards are generated.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the coil demoulding device for the dry-type transformer, which is convenient to operate, firm in fixation and high in safety. The technical scheme of the utility model is as follows:

the coil demoulding device of the dry-type transformer comprises a fixing piece and four screws which are arranged on the fixing piece and are positioned in the vertical directions of four opposite angles, wherein each screw is sequentially penetrated through a pressing plate and a locking nut from bottom to top, one end of the pressing plate is provided with a groove, a chute is further arranged on the pressing plate along the axial direction, the width of the chute of the pressing plate is larger than the outer diameter of the screw, the screw is allowed to freely rotate in the chute of the pressing plate, and the locking nut is tightly matched with the screw through a thread structure;

the screw is fixed on the fixing piece in a threaded or welded mode;

the fixing piece is an integral or four-piece fixing block.

Preferably, the groove on the pressing plate is a U-shaped groove, and the width of the groove is larger than the outer diameter of the connecting rod of the common transformer die.

Preferably, the pressing plate is a flat steel plate.

Preferably, the pressing plate is U-shaped steel, the strength of the selected U-shaped steel is larger, and the pressing plate can be prevented from generating axial deformation when the transformer is hoisted due to the fact that the transformer is large in mass.

Preferably, a gasket is arranged between the pressing plate and the locking nut, the size of the gasket is wider than the groove width of the sliding groove, and the pressing plate is fastened on the fixing piece by arranging the gasket to be matched with the locking nut.

Further, four fixed blocks are arranged into a quadrilateral, and the pressing plate can be lifted by adopting the fixed blocks, so that the lower panel of the transformer die can be directly placed below the pressing plate, and the operation is more convenient.

Further, the top heights of the four fixing blocks are the same and are larger than the height of the lower panel of the transformer die, the fixing blocks are set to level the height of the lower panel of the transformer die, and the firmness of the whole structure after locking is guaranteed.

Compared with the prior art, the utility model has the beneficial effects that:

the demoulding device provided by the utility model applies pressure to the lower panel of the transformer mould by adopting the planar pressing plate, so that the problem of coil deformation caused by large local pressure due to point contact is solved, and the breakage rate caused by demoulding is lower;

2, the utility model designs the pressing plate with the sliding groove to be matched with the screw rod, so that the pressing plate can be slidably adjusted in any direction and can be adjusted for moulds with different sizes, thereby the application range is wider;

the demolding scheme provided by the utility model has the advantages that the pressing plate is slid to the lower panel of the mold and matched with the connecting rod on the mold to limit the mold, the mold is fastened by four nuts, the operation is convenient, the demolding efficiency is improved, the labor is effectively saved, and meanwhile, the demolding device is simple in structure, small in size, convenient to use, safe and reliable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic diagram of a matching structure of a coil demolding device for a dry-type transformer and a transformer mold provided by the utility model;

fig. 2 is a top view of a pressing plate structure in a coil demolding device of a dry-type transformer;

FIG. 3 is a side view of a platen structure in a dry-type transformer coil stripper apparatus according to the present utility model;

fig. 4 is a top view of a coil stripper device for a dry-type transformer according to the present utility model.

The device comprises a 1-hanging ring, a 2-connecting rod nut, a 3-coil die body, a 4-lower panel base, a 5-coil, a 6-fixed block, a 7-connecting rod, an 8-screw, a 9-gasket nut, a 10-gasket, an 11-sliding chute, a 12-U-shaped groove, a 13-pressing plate, a 14-lower panel and a 15-upper panel.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Example 1: dry-type transformer coil shedder

As shown in fig. 1, the transformer comprises four fixed blocks 6 buried underground, the four fixed blocks 6 are arranged in a quadrilateral shape, the length of each of the four sides is larger than the length and the width of a common transformer die, the four sides can be fixed in a concrete casting mode, and as a typical embodiment, the fixed blocks 6 are positioned on the same horizontal plane and can be fixed on any solid which can be firmly fixed, and the fixing mode can be a fixing mode such as welding. The top heights of the four fixing blocks are the same and are larger than the height of the lower panel of the transformer die. The fixed blocks 6 are respectively and fixedly provided with a vertical screw rod 8, the upper part of each fixed block 6 is provided with a pressing plate 13, as a typical embodiment, the pressing plates 13 are made of U-shaped channel steel as shown in fig. 2 and 3, the bottoms of the pressing plates are provided with axial sliding grooves 11, one ends of the pressing plates are provided with U-shaped grooves 12, and the width of each groove is larger than the outer diameter of a connecting rod of a common transformer die; a gasket 10 is arranged above the pressing plate 13, a lock nut 9 is arranged above the gasket 10, the screw rod 8 penetrates through the lock nut 9, the gasket 10 and a chute 11 of the pressing plate 13 from top to bottom, and the pressing plate 13 can rotate around the screw rod 8 in a universal mode and slide along the chute 11. The gasket 10 has a square sheet structure, and the length and width of the gasket are both larger than the width of the chute 11 (the length of the chute is in the axial direction, and the width of the chute is perpendicular to the axial direction). The groove width of the pressing plate sliding groove is larger than the outer diameter of the screw rod, the screw rod is allowed to freely rotate in the pressing plate sliding groove, and the pressing plate 13 is fixed by screwing the locking nut 9 through the screw rod 8 and the gasket 10, so that the pressing plate can not slide any more.

The screw rod is fixed on the fixing piece in a threaded or welded mode.

The pressing plate can be made of a common flat steel plate, and is used as a preferable U-shaped steel, so that the strength is higher, and the axial deformation is avoided.

The structure of the transformer is shown in fig. 1 and 4, and comprises a coil die body 3, an upper panel 15 fixed to the top of the die body 3 and a lower panel 14 fixed to the bottom of the die body 3, wherein four diagonally distributed lower panel bases 4 are arranged at the bottom of the lower panel 14, four diagonally distributed connecting rods 7 are arranged between the two panels, the upper end and the lower end of each connecting rod are fixed by connecting rod nuts 2, a casting coil 5 is arranged in the die body 3, and a hanging ring 1 is arranged at the top of the casting coil 5.

When the transformer is demoulded and used, the U-shaped grooves 12 at one end of the pressing plate are respectively embedded into the four connecting rods by the four pressing plates in a sliding way, so that the connecting rods 7 on the transformer mould are limited, and the mould is prevented from shifting in the hoisting process after the installation is finished; the lock nuts 9 on the gaskets 10 are screwed down to enable the pressing plates 13 to be in a fixed state, at the moment, the 4 pressing plates 13 are used for compacting and fixing the lower panel 14 of the die 3, the upper panel 15 can be fixed under force by matching with the four connecting rods 7, then the crane lifting hooks are hooked into the two lifting rings 1 at the top ends of the coils 5, and the crane is vertically lifted, so that the coils 5 can be easily separated from the die 3.

Example 2: dry-type transformer coil shedder

As an exemplary embodiment, the fixing block 6 is a unitary base plate. The screws 8 are distributed at four opposite corners of the bottom plate.

By adopting the demoulding device provided by the utility model, an operator only needs to press the lower panel of the transformer mould along the sliding chute sliding pressing plate, the coil is hoisted by using the travelling crane by tightening and fixing the four locking nuts, the operation is convenient and quick, the demoulding efficiency is high, and the damage to the coil is avoided.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The coil demoulding device of the dry-type transformer is characterized by comprising a fixing piece and four screws which are arranged on the fixing piece and positioned at four opposite angles, wherein each screw is sequentially penetrated through a pressing plate and a locking nut from bottom to top, one end of the pressing plate is provided with a groove, a chute is further arranged on the pressing plate along the axial direction, the width of the chute of the pressing plate is larger than the outer diameter of the screw, the screw is allowed to freely rotate in the chute of the pressing plate, and the locking nut is tightly matched with the screw through a thread structure;

the screw is vertically fixed on the fixing piece in a threaded or welded mode;

the fixing piece is an integral or four-piece fixing block.

2. The dry-type transformer coil demolding device according to claim 1, wherein the groove on the pressing plate is a U-shaped groove, and the width of the groove is larger than the outer diameter of a connecting rod of a common transformer mold.

3. The dry-type transformer coil stripping apparatus as recited in claim 2 wherein said press plate is a flat steel plate.

4. The dry-type transformer coil stripping apparatus as recited in claim 2 wherein said press plate is U-shaped steel.

5. A dry-type transformer coil stripping apparatus as claimed in any one of claims 3 or 4, wherein a spacer is provided between the pressing plate and the lock nut, the spacer having a dimension wider than a slot width of the chute.

6. The dry-type transformer coil demolding device according to claim 1, wherein four fixing blocks are arranged in a quadrilateral shape.

7. The dry-type transformer coil stripping apparatus as set forth in claim 6, wherein the top of the four fixing blocks have the same height, which is greater than the height of the lower panel of the transformer mold.