CN203250628U - Iron core pulling plate structure used in transformer and transformer comprising iron core pulling plate structure - Google Patents
Iron core pulling plate structure used in transformer and transformer comprising iron core pulling plate structure Download PDFInfo
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- CN203250628U CN203250628U CN2013202970889U CN201320297088U CN203250628U CN 203250628 U CN203250628 U CN 203250628U CN 2013202970889 U CN2013202970889 U CN 2013202970889U CN 201320297088 U CN201320297088 U CN 201320297088U CN 203250628 U CN203250628 U CN 203250628U
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Abstract
The utility model provides an iron core pulling plate structure. A pin is adopted as a clamping accessory, the pin at least comprises a first installation part and a second installation part, the diameter of the second installation part is larger than that of the first installation part, and a locking part locks the second installation part in a second installation through hole. Due to the facts that the diameter of the second installation part of the pin is larger than that of the first installation part and the second installation part is locked inside the second installation through hole through the locking part, in the assembly process, even through the locking part is not screwed up, the second installation part of the pin can be well matched with a pulling plate under the action of the pulling force of a screw rod, and higher load bearing performance is realized. If the locking is screwed too tightly, due to the fact that the diameter of the second installation part of the pin is larger than that of the first installation part, action force acting on an insulation plate is largely reduced, and the risk of damage to the insulation plate is reduced.
Description
Technical field
The utility model relates to a kind of iron-core draw-board structure for transformer and comprises the transformer of this pulling plate structure, belongs to transformer manufacture technology.
Background technology
Transformer during fabrication, need to adopt upper and lower folder some laminations to be clamped and the formation iron core, and in lifting and transportation, often need the load-bearing of upper and lower folder one, therefore, in the existing dry-type transformer arm-tie is set all generally, adopt arm-tie that upper and lower folder is fixed together, then adopt clamp fitting with upper and lower folder and iron core locking, like this, in the process of lifting and transportation, as long as upper clamping piece is applied active force, lower clamping piece will be with iron core and the whole picking-up of coil.In addition, insulation board is equipped with in order to guarantee the iron core one point earth, at folder the earth terminal of iron core is set, and pad between arm-tie and iron core.
As shown in Figure 1, a kind of iron-core draw-board structure for dry-type transformer is disclosed in the prior art, lamination with some successively closed assemblies, some described laminations form iron core 5, rear and front end along the closed assembly direction arranges respectively folder 1, direction closed assembly towards iron core 5 on the described folder 1 has arm-tie 3 and insulation board 4, offer the identical installing hole of size on described arm-tie 3 and the described folder 1, stretch into after inserting in the installing hole of folder 1 as the bolt 2 of clamp fitting in the installing hole of described arm-tie 3 and described folder and described arm-tie 3 are coupled together.
The defective that this kind iron-core draw-board structure exists is: connect by bolt between arm-tie 3 and the folder 1, in assembling process, if bolt 2 is twisted loosely, then connect insecure, in hoisting process, with so that upper and lower folder is difficult to bear the weight of transformer body; And if bolt 2 is twisted tightlyer, then need the length of bolt 2 above the thickness of arm-tie 3, thereby so that an end of bolt 2 is resisted against insulation board 4, and then cause the breakage of insulation board, when insulation board is damaged, iron core 5 will have multipoint earthing, cause the overheated of transformer, will burn transformer when serious.
The utility model content
Therefore, the technical problems to be solved in the utility model is to provide a kind of load-bearing property good, and the overheated defective of can avoiding transformer because insulation board is damaged.
For this reason, the utility model provides a kind of iron-core draw-board structure for transformer, comprise the successively some laminations of closed assembly, described lamination clamps and the formation iron core, the rear and front end along the closed assembly direction of some described laminations is respectively arranged with folder, towards the direction of outermost described lamination successively closed assembly arm-tie and insulation board are arranged on the described folder, described arm-tie be connected folder and connect by clamp fitting, described clamp fitting comprises pin, be positioned at first on the described folder through hole is installed, be positioned at second on the described arm-tie through hole and locking member are installed, described first installs the aperture of through hole less than the described second aperture that through hole is installed, described pin has the first installation portion and the second installation portion at least, the diameter of described the second installation portion is greater than the diameter of described the first installation portion, and described locking member is locked at described second with described the second installation portion and installs in the through hole.
Described locking member also is locked at described the first installation portion described first and installs in the through hole.
Described pin also has the 3rd installation portion, and described locking member is locked at described second by described the 3rd installation portion with described the second installation portion and installs in the through hole.
Described pin also has the 3rd installation portion, and described locking member is locked at described first by described the 3rd installation portion with described the first installation portion and installs in the through hole, and described the second installation portion is locked in described the second installation through hole.
Described locking member is sleeved on described the 3rd installation portion and locks.
Be provided with external screw thread on described the 3rd installation portion, described locking member is for arranging female nut, and described internal thread and described external screw thread lock.
Described the second installation portion is radial flange.
Described arm-tie is the stainless steel arm-tie.
Described insulation board is the expoxy glass plate.
The utility model also provides a kind of transformer, and described transformer comprises above-mentioned each described iron-core draw-board structure.
The iron-core draw-board structure that the utility model provides and the transformer that comprises this iron core Tiebar structure have the following advantages:
The iron-core draw-board structure that the utility model provides, described clamp fitting comprises pin, be positioned at first on the described folder through hole is installed, be positioned at second on the described arm-tie through hole and locking member are installed, described first installs the aperture of through hole less than the described second aperture that through hole is installed, described pin has the first installation portion and the second installation portion at least, the diameter of described the second installation portion is greater than the diameter of described the first installation portion, described locking member is locked at described second with described the second installation portion and installs in the through hole, because the diameter of the second installation portion of described pin is greater than the diameter of described the first installation portion, and described the second installation portion part that is locked is locked at described second and installs in the through hole, like this, when assembling, even described locking member is not tightened, the second installation portion of pin also can well cooperate with arm-tie under the pulling force effect of other screw rod, reaches higher load-bearing property; And if described locking member is twisted tightlyer, because the diameter of the second installation portion of described pin is greater than described the first installation portion, with the active force that greatly reduces to act on the insulation board, thereby reduce the risk of described insulation board breakage.
Description of drawings
Fig. 1 is the structural representation of the iron-core draw-board structure of prior art;
Fig. 2 is the structural representation of transformer of the present utility model;
Fig. 3 be among Fig. 1 A-A to profile;
Fig. 4 is the structural representation of pin of the present utility model.
Reference numeral is expressed as among above-mentioned Fig. 1-4:
The 1-folder, 11-first installs through hole; The 2-bolt; The 3-arm-tie; 31-second installs through hole; The 4-insulation board; The 5-iron core; The 6-pin; 61-the first installation portion; 62-the second installation portion; 63-the 3rd installation portion; The 7-nut; The other screw rod of 8-.
Embodiment
Such as Fig. 2 and as shown in Figure 3, present embodiment provides a kind of iron-core draw-board structure for transformer, comprise successively some laminations of closed assembly, some described laminations are clamped and formation iron core 5 by other screw rod 8, the rear and front end along the closed assembly direction of some described laminations is respectively arranged with folder 1, towards the direction of described iron core 5 successively closed assembly arm-tie 3 and insulation board 4 are arranged on the described folder 1, described folder 1 be connected arm-tie 3 and connect by clamp fitting, described clamp fitting comprises pin 6, be positioned at first on the described folder 1 through hole 11 is installed, be positioned at that second on the described arm-tie 3 installed through hole 31 and as the nut 7 of locking member, described nut 7 has internal thread, described first installs the aperture of through hole 11 less than the described second aperture that through hole 31 is installed, as shown in Figure 4, described pin 6 has the first installation portion 61, the second installation portion 62 and the 3rd installation portion 63, described the 3rd installation portion 63 has external screw thread, and the diameter of described the second installation portion 62 is greater than the diameter of described the first installation portion 61.
In the present embodiment, described the second installation portion 62 is radial flange, and at this, " radially " is construed as the direction perpendicular with the length direction of described pin 6.
In the present embodiment, described arm-tie 3 is the stainless steel arm-tie, and certainly, described arm-tie 3 can also adopt other non-magnetic metallic plate.
In the present embodiment, described insulation board 4 is the expoxy glass plate.
During assembling, described the first installation portion 61 is positioned at described first through hole 11 is installed, described the second installation portion 62 is positioned at described second through hole 31 is installed, described nut 7 is socketed on described the 3rd installation portion 63, the external screw thread of described the 3rd installation portion 63 matches with the internal thread of described nut 7 and described the second installation portion 62 is locked in described the second installation through hole 31, and described the first installation portion 61 is locked in described the first installation through hole 11.
During use, even described locking member is not tightened, the second installation portion 62 of pin 6 also can well cooperate with arm-tie 3 under the pulling force effect of other screw rod 8, reaches higher load-bearing property; And if described locking member is twisted tightlyer, because the diameter of the second installation portion 62 of described pin 6 is greater than described the first installation portion 61, with the active force that greatly reduces to act on the insulation board 4, thereby reduce the risk of described insulation board 4 breakages.
Such as Fig. 2-shown in Figure 4, present embodiment provides the dry-type transformer of the iron-core draw-board structure shown in a kind of embodiment of comprising 1, and described dry-type transformer also has the structure member of the dry-type transformer well known in the art of realizing the dry-type transformer basic function except having the iron-core draw-board structure.
When the dry-type transformer that present embodiment provides used, even described locking member is not tightened, the second installation portion of pin also can well cooperate with arm-tie 3 under the pulling force effect of other screw rod 8, reaches higher load-bearing property; And if described locking member is twisted tightlyer, because the diameter of the second installation portion 62 of described pin 6 is greater than described the first installation portion 61, with the active force that greatly reduces to act on the insulation board 4, thereby reduce the risk of described insulation board 4 breakages.
Below in conjunction with the accompanying drawings and embodiments iron-core draw-board structure of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (10)
1. the iron-core draw-board structure that is used for transformer, comprise successively some laminations of closed assembly, some described laminations clamp and formation iron core (5), the rear and front end along the closed assembly direction of some described laminations is respectively arranged with folder (1), the upper direction towards described iron core (5) of described folder (1) successively closed assembly has arm-tie (3) and insulation board (4), described arm-tie (3) be connected folder (1) and connect by clamp fitting, it is characterized in that: described clamp fitting comprises pin (6), be positioned at first on the described folder (1) through hole (11) is installed, be positioned at second on the described arm-tie (3) through hole (31) and locking member are installed, described first installs the aperture of through hole (11) less than the described second aperture that through hole (31) is installed, described pin (6) has the first installation portion (61) and the second installation portion (62) at least, the diameter of described the second installation portion (62) is greater than the diameter of described the first installation portion (61), and described locking member is locked at described second with described the second installation portion (62) and installs in the through hole (31).
2. iron-core draw-board structure according to claim 1 is characterized in that: described locking member also is locked at described the first installation portion (61) described first and installs in the through hole (11).
3. the iron-core draw-board structure for transformer according to claim 1, it is characterized in that: described pin (6) also has the 3rd installation portion (63), and described locking member is locked at described second by described the 3rd installation portion (63) with described the second installation portion (62) and installs in the through hole (31).
4. the iron-core draw-board structure for transformer according to claim 2, it is characterized in that: described pin (6) also has the 3rd installation portion (63), described locking member is locked at described first by described the 3rd installation portion (63) with described the first installation portion (61) and installs in the through hole (11), and described the second installation portion (62) is locked in described the second installation through hole (31).
5. according to claim 3 or 4 described iron-core draw-board structures for transformer, it is characterized in that: described locking member is sleeved on described the 3rd installation portion (63) and locks.
6. the iron-core draw-board structure for transformer according to claim 4, it is characterized in that: be provided with external screw thread on described the 3rd installation portion (63), described locking member is for arranging female nut (7), and described internal thread and described external screw thread lock.
7. the iron-core draw-board structure for transformer according to claim 6, it is characterized in that: described the second installation portion (62) is radial flange.
8. the iron-core draw-board structure for transformer according to claim 7, it is characterized in that: described arm-tie (3) is the stainless steel arm-tie.
9. the iron-core draw-board structure for transformer according to claim 8, it is characterized in that: described insulation board (4) is the expoxy glass plate.
10. a transformer is characterized in that: comprise each described iron-core draw-board structure among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202970889U CN203250628U (en) | 2013-05-28 | 2013-05-28 | Iron core pulling plate structure used in transformer and transformer comprising iron core pulling plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202970889U CN203250628U (en) | 2013-05-28 | 2013-05-28 | Iron core pulling plate structure used in transformer and transformer comprising iron core pulling plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250628U true CN203250628U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202970889U Expired - Fee Related CN203250628U (en) | 2013-05-28 | 2013-05-28 | Iron core pulling plate structure used in transformer and transformer comprising iron core pulling plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203250628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4006927A1 (en) * | 2020-11-30 | 2022-06-01 | Hitachi Energy Switzerland AG | Laminated non-magnetic tie plate for transformer cores |
-
2013
- 2013-05-28 CN CN2013202970889U patent/CN203250628U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4006927A1 (en) * | 2020-11-30 | 2022-06-01 | Hitachi Energy Switzerland AG | Laminated non-magnetic tie plate for transformer cores |
| WO2022111901A1 (en) * | 2020-11-30 | 2022-06-02 | Hitachi Energy Switzerland Ag | Tie plate for a transformer core assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20190528 |