Novel iron core lower part binding, supporting and fixing device

Abstract

The utility model belongs to the technical field of transformers, and particularly relates to a novel iron core lower part binding, supporting and fixing device which is characterized in that three supporting legs are arranged at the bottom of a web plate of an iron core lower clamping piece at intervals, and three foot-pad plates and six positioning bolts are arranged at the bottom of an oil tank; load-bearing supporting of the transformer body formed by the iron core and the outer support of the iron core and reliable fixing between the transformer body and the bottom of the oil tank are achieved, the number of the foot-pad plates and the number of the positioning bolts just meet the requirement for firm fixing of the transformer body, too many parts used for fixing the transformer body are avoided, machining single pieces can be reduced, and machining cost is reduced. The production efficiency is improved, the manufacturing cost is reduced, and meanwhile, the arrangement mode of related structures of the transformer is high in integrity and simple and clear. Three groups of drawstrings which are bound on the web plate and the iron core in a surrounding manner are respectively arranged in the area between the adjacent supporting legs on the web plate, and the number of the drawstrings is just matched with the size of the iron core of the transformer, so that the lower part of the iron core in the transformer is bound uniformly and firmly.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to a novel iron core lower binding support fixing device. Background Art

[0002] The lower binding support of the core of a large transformer needs to be stable, which is related to the working stability and service life of the transformer. If the core is unstable, the core will vibrate during the operation of the transformer and produce excessive noise; and the unstable core of the transformer will also increase the magnetic resistance of the transformer, which may cause copper loss and damage the winding. The existing method of fixing the lower part of the iron core leads to a relatively complex structure in order to improve stability. For example, the Chinese patent document with publication number CN111834099B records a fixing structure of a transformer iron core and a fixing method thereof, including a heat dissipation support mechanism, the top of the heat dissipation support mechanism is movably connected to the iron core body, the bottom of the front and rear sides of the iron core body are movably connected to the first fixing frame, both sides of the bottom of the first fixing frame are provided with threaded holes, and a second reinforcement frame, a first reinforcement frame, a first pipe cover, a mounting plate, a base, a reinforcement plate, a second pipe cover, a first fixing frame, a first bolt, a coolant, an iron core body, a threaded pipe, a screw, a second fixing frame, a lifting ring and other structural parts are provided. There are many overall parts, which not only requires many single pieces to be processed, but also affects production efficiency and increases manufacturing costs, and the entire layout is too fragmented and complicated. Utility Model Content

[0003] The utility model aims to provide a novel lower core binding support fixing device, so that the lower part of the iron core in the transformer can be evenly bound, the load-bearing support of the device body (the iron core and its external support) can be supported, and the device body and the bottom of the oil tank can be stably and reliably fixed, and the processing of single parts can be reduced, the production efficiency can be improved, and the manufacturing cost can be reduced. At the same time, the overall layout of the transformer-related structures can be strong and the layout can be concise and clear.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel iron core lower binding support and fixing device is provided, comprising an iron core lower clamp, the iron core lower clamp comprising webs arranged on both sides of the iron core, the bottom of the webs being provided with three supporting feet; further comprising three foot pads for being arranged at the bottom of an oil tank, and six positioning bolts arranged at the bottom of the oil tank, the three supporting feet at the bottom of the webs being respectively arranged on each of the foot pads, through holes corresponding to the positioning bolts are respectively arranged at both ends of the foot pads, the foot pads are connected to the positioning bolts by a clamping and fixing assembly, and the webs are fixed to the foot pads by a connecting assembly; three groups of drawstrings bound around the webs and the iron core are respectively arranged in the areas between adjacent supporting feet on the webs;

[0006] The clamping and fixing assembly comprises a first pad, a second pad, a washer and a nut which are sleeved on the positioning bolt from bottom to top, and the nut is a double nut;

[0007] The connecting assembly includes a lug plate horizontally arranged on the bottom side of the web plate, and bolts connected between the lug plate and the foot plate, and a rib plate is arranged between the lug plate and the web plate;

[0008] Positioning grooves are respectively arranged on the side surfaces of the web at both sides of each of the drawstrings, positioning blocks are arranged in the positioning grooves, and the drawstrings are confined between the corresponding positioning blocks.

[0009] Preferably, among the three foot plates, one is a side foot plate arranged under the supporting feet on both sides of the web, and the other is a middle foot plate. The through holes on the side foot plates are positioning holes whose inner diameters match the corresponding positioning bolt diameters, and the through holes on the middle foot plate are non-positioning holes whose inner diameters are larger than the corresponding positioning bolt diameters.

[0010] Preferably, an isolation gasket is provided on the upper side of the footrest.

[0011] Preferably, the positioning bolts are welded to the bottom of the oil tank.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the new type of iron core lower binding support fixing device realizes the load-bearing support of the body composed of the iron core and its external support and the stable and reliable fixation between the body and the bottom of the oil tank by arranging three support feet at intervals at the bottom of the web of the lower clamp of the iron core, arranging three foot pads and six positioning bolts at the bottom of the oil tank, connecting the foot pads to the positioning bolts through a clamping and fixing assembly, and fixing the web to the foot pads through a connecting assembly, and realizing the load-bearing support of the body composed of the iron core and its external support and the stable and reliable fixation between the body and the bottom of the oil tank, and the number of foot pads and positioning bolts just meets the reliable fixation of the body, and the number is not too much and not too little, avoiding too many parts for fixing the body, which can reduce the processing of single pieces, improve production efficiency and reduce manufacturing costs, and at the same time, it can also make the layout of the transformer related structures more integrated and the layout method concise and clear. By arranging three groups of drawstrings bound to the web and the iron core in the area between adjacent support feet on the web, the number of drawstrings is just adapted to the size of the iron core of this type of transformer, so that the binding of the lower part of the iron core in the transformer is uniform and tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1It is a schematic diagram of the front structure of an embodiment of a new type of iron core lower binding support fixing device of the utility model.

[0015] Figure 2 It is a left structural schematic diagram of an embodiment of a new type of iron core lower binding support fixing device of the utility model.

[0016] Figure 3 for Figure 1 Enlarged view of part A.

[0017] Figure 4 for Figure 1 Enlarged view of part B.

[0018] Figure 5 for Figure 2 Enlarged view of part C.

[0019] In the figure, the reference numerals are indicated as: iron core 1, web 2, supporting foot 21, ear plate 22, rib plate 23, positioning groove 24, positioning block 25, oil tank bottom 3, foot plate 4, positioning bolt 5, first pad 51, second pad 52, washer 53, nut 54, drawstring 6, isolation gasket 7. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In one embodiment, a novel core lower binding support fixing device is provided, such as Figure 1-5As shown, the new type of core lower binding support and fixing device includes a core lower clamp, which includes webs 2 arranged on both sides of the core 1, and the core 1 is clamped in the middle by the webs 2 on both sides for preliminary fixation, and three supporting feet 21 are arranged at intervals at the bottom of the web 2, and the three supporting feet 21 are respectively located in the middle and on both sides of the bottom of the web 2; the new type of core lower binding support and fixing device also includes three foot plates 4 for being set on the bottom 3 of the oil tank, the foot plates 4 are strip plates, and the three supporting feet 21 at the bottom of the web 2 are respectively arranged on each foot plate 4, and the supporting feet 21 at the bottom of the webs on both sides can be fully supported on the corresponding foot plates 4. The new type of iron core lower binding support and fixing device also includes six positioning bolts 5 arranged on the bottom 3 of the oil tank. The positioning bolts 5 are distributed on both sides of the bottom 3 of the oil tank, and the positioning bolts 5 are fixed on the bottom 3 of the oil tank. In the present embodiment, the positioning bolts 5 are welded on the bottom 3 of the oil tank, and through holes corresponding to the positioning bolts 5 are respectively provided at both ends of the three foot plates 4, that is, one foot plate 4 corresponds to two positioning bolts 5, and the foot plate 4 is connected to the positioning bolts 5 by a clamping and fixing assembly, so that the connection and fixation between the foot plate 4 and the bottom 3 of the oil tank is realized; the web 2 is fixed to the foot plate 4 by a connecting assembly, so that the connection and fixation between the web 2 and the foot plate 4 is realized; three groups of drawstrings 6 are respectively provided on the web 2 and the iron core 1 in the area between adjacent supporting feet 21 on the web 2. The drawstrings 6 can be made of metal strips, and the two ends of the drawstrings 6 are crimped with fasteners, or directly welded, so that the drawstrings 6 bind the web 2 and the iron core tightly.

[0022] The new type of iron core lower binding support fixing device is provided by arranging three support feet 21 at intervals at the bottom of the web 2 of the lower clamp of the iron core, and arranging three foot plates 4 and six positioning bolts 5 at the bottom 3 of the oil tank, connecting the foot plates 4 to the positioning bolts 5 through a pressing and fixing assembly, and fixing the web 2 to the foot plates 4 through a connecting assembly, so as to realize the load-bearing support of the body composed of the iron core and its external support and the reliable fixation between the body and the bottom of the oil tank, and the number of foot plates 4 and positioning bolts 5 just meets the reliable fixation of the body, and the number is not too much or too little, so as to avoid too many parts for fixing the body, reduce the processing of single pieces, improve production efficiency and reduce manufacturing costs, and at the same time make the transformer related structure layout mode more integrated and simple and clear. By arranging three groups of drawstrings 6 bound to the web 2 and the iron core 1 in the area between adjacent support feet 21 on the web 2, the number of drawstrings 6 is just adapted to the size of the iron core of this type of transformer, so that the binding of the lower part of the iron core in the transformer is uniform and tightened.

[0023] Further, in another embodiment, Figure 1-5As shown, the clamping and fixing assembly in the new core lower binding support and fixing device includes a first pad 51, a second pad 52, a washer 53 and a nut 54 which are sleeved on the positioning bolt 5 from bottom to top. Among them, since the root of the positioning bolt 5 is thick, holes of different sizes are opened in the first pad 51 and the second pad 52 for the corresponding parts of the positioning bolt 5 to pass through. The washer 53 plays an anti-loosening role, and the nut 54 is a double nut, which further plays an anti-loosening effect.

[0024] Further, in another embodiment, Figure 1-5 As shown, the connection assembly in the novel core lower binding support and fixing device includes an ear plate 22 horizontally arranged on the bottom side of the web 2, the ear plate 22 is horizontally welded to the lower edge of the web 2, bolts (not shown in the figure) are provided between the ear plate 22 and the foot plate 4, the ear plate 22 and the foot plate 4 are connected by bolts, and a rib plate 23 is provided between the ear plate 22 and the web 2, and the connection strength is strengthened by the rib plate 23.

[0025] Further, in another embodiment, Figure 4 As shown, the new type of core lower binding support and fixing device is provided with positioning grooves 24 on the side of the web 2, located on both sides of each draw strap 6. The notches of the positioning grooves 24 on both sides of the draw strap 6 are arranged opposite to each other, and positioning blocks 25 are respectively provided in the positioning grooves 24 on both sides. The positioning blocks 25 are connected to the web 2 by screws, and the draw strap 6 is limited between the positioning blocks 25 on both sides. By setting the positioning grooves 24 and the positioning blocks 25, the binding position of the draw strap 6 is limited to ensure that the three draw straps 6 are evenly bound.

[0026] Further, in another embodiment, Figure 1-5 As shown, among the three foot plates 4 of the new core lower binding support and fixing device, the foot plates arranged under the supporting feet 21 on both sides of the web 2 are side foot plates, and the other foot plate 4 located in the middle is the middle foot plate. The through holes on the side foot plates are positioning holes whose inner diameters match the diameters of the corresponding positioning bolts 5, and the through holes on the middle foot plates are non-positioning holes whose inner diameters are larger than the diameters of the corresponding positioning bolts 5. Through the arrangement of such positioning holes and non-positioning holes, while achieving positioning, over-positioning is avoided, thereby making positioning easier during the assembly process, and not causing excessive positioning to increase the difficulty of assembly.

[0027] Further, in another embodiment, Figure 1-5 As shown, the new type of iron core lower binding support fixing device is provided with an isolation gasket 7 on the upper side of the foot plate. The isolation gasket 7 is made of plastic material and is used to prevent the metal on the upper and lower sides from directly contacting each other and easily rusting.

[0028] It can be seen from the above embodiments that the new type of iron core lower binding support fixing device is suitable for large transformers for uniform binding of the lower part of the iron core sheet, load-bearing support of the body, and reliable fixation between the body and the bottom of the oil tank. Since the three drawstrings 6 have satisfied the uniform binding of the lower part of the iron core sheet, there is no need to add a side tightening device on the side of the iron core. Similarly, since a total of six positioning bolts 5 and six sets of clamping and fixing components are provided between the three footboards 4 and the bottom of the oil tank, the reliable fixation of the body has been satisfied, so there is no need to add another connection structure. Therefore, the layout of the new type of iron core lower binding support fixing device not only meets the above functional requirements, but also has the advantages of less processing of single pieces, high production efficiency, low manufacturing cost, strong integrity, and a concise and clear layout, so that the transformer-related structure is optimized in terms of safety, reliability and economic applicability.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of iron core lower binding support fixing device, characterized in that: It includes a lower clamp of the iron core, which includes a web arranged on both sides of the iron core, and the bottom of the web is provided with three supporting feet; it also includes three footboards for being arranged at the bottom of the oil tank, and six positioning bolts arranged at the bottom of the oil tank, the three supporting feet at the bottom of the web are respectively arranged on each of the footboards, and through holes corresponding to the positioning bolts are respectively arranged at both ends of the footboards, the footboards are connected to the positioning bolts through a clamping and fixing assembly, and the web is fixed to the footboard through a connecting assembly; three groups of drawstrings bound around the web and the iron core are respectively arranged in the area between adjacent supporting feet on the web; The clamping and fixing assembly comprises a first pad, a second pad, a washer and a nut which are sleeved on the positioning bolt from bottom to top, and the nut is a double nut; The connecting assembly includes a lug plate horizontally arranged on the bottom side of the web plate, and bolts connected between the lug plate and the foot plate, and a rib plate is arranged between the lug plate and the web plate; Positioning grooves are respectively arranged on the side surfaces of the web at both sides of each of the drawstrings, positioning blocks are arranged in the positioning grooves, and the drawstrings are confined between the corresponding positioning blocks.

2. According to the novel core lower binding support fixing device of claim 1, it is characterized in that: Among the three foot plates, one is a side foot plate and the other is a middle foot plate arranged under the supporting feet on both sides of the web. The through holes on the side foot plates are positioning holes whose inner diameters match the corresponding positioning bolt diameters, and the through holes on the middle foot plate are non-positioning holes whose inner diameters are larger than the corresponding positioning bolt diameters.

3. The novel core lower binding support fixing device according to claim 1 is characterized in that: An isolation gasket is provided on the upper side of the footrest.

4. The novel iron core lower binding support fixing device according to claim 1 is characterized in that: The positioning bolts are welded to the bottom of the oil tank.

Images