CN111180171B - Fastening device for fixing iron core clamp - Google Patents
Fastening device for fixing iron core clamp Download PDFInfo
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- CN111180171B CN111180171B CN202010017678.6A CN202010017678A CN111180171B CN 111180171 B CN111180171 B CN 111180171B CN 202010017678 A CN202010017678 A CN 202010017678A CN 111180171 B CN111180171 B CN 111180171B
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- fixing
- iron core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention provides a fastening device for fixing an iron core clamp, which comprises: the device comprises a bolt, a nut, an annular insulating part, an anti-loosening mechanism and a shielding mechanism; the bolt is sequentially arranged in the two iron core clamping pieces which are arranged in parallel in a penetrating way and is in threaded connection with the nut; the anti-loosening mechanism is arranged between the nut and the corresponding iron core clamping piece and is used for preventing the nut from loosening; the insulating piece is sleeved on the bolt and clamped between a fixing nut of the bolt and the corresponding iron core clamping piece so as to form single-point electrical connection among the bolt, the nut and the iron core clamping piece; the shielding mechanism is arranged on the bolt and used for electrically shielding two ends of the bolt. According to the invention, the anti-loosening mechanism can effectively prevent the nut from loosening, the stability of the iron core structure is ensured, the fixed nut end of the bolt and the iron core clamping piece are relatively insulated due to the arrangement of the insulating piece, the single-point electrical connection between the bolt, the nut and the iron core clamping piece is ensured, and the point discharge of the fixed nut end and the nut end of the bolt under the action of an electric field is prevented due to the arrangement of the shielding mechanism.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a fastening device for fixing an iron core clamp.
Background
Large-scale power equipment iron cores such as high-voltage shunt reactors, power transformers and the like are formed by splicing silicon steel sheets, then are fastened by clamping pieces made of high-strength low-conductivity magnetic steel, and are fastened through screws and nuts, so that an iron core structure is formed. However, for the reactor and the transformer, during operation, due to the hysteresis shrinkage phenomenon of the iron core silicon steel sheet material, iron core vibration is easily caused, and particularly, in the long-term operation process of the reactor, the nut may be loosened and even dropped, so that the internal discharge of the equipment is caused, and the normal operation of the equipment is influenced.
Disclosure of Invention
In view of this, the present invention provides a fastening device for fixing an iron core clip, which aims to solve the problem that a nut is easy to loosen in a fastening structure of a screw nut for fixing an iron core in the prior art.
The invention provides a fastening device for fixing an iron core clamp, which comprises: the device comprises a bolt, a nut, an annular insulating part, an anti-loosening mechanism and a shielding mechanism; wherein, the bolt is sequentially arranged through the two iron core clamping pieces which are arranged in parallel and is in bolt connection with the nut; the anti-loosening mechanism is arranged between the nut and the corresponding iron core clamping piece and is used for preventing the nut from loosening; the insulating piece is sleeved on the bolt and clamped between a fixing nut of the bolt and the corresponding iron core clamping piece so as to form single-point electrical connection among the bolt, the nut and the iron core clamping piece; the shielding mechanism is arranged on the bolt and used for electrically shielding two ends of the bolt.
Further, in the fastening device for fixing a core clip, the anti-release mechanism includes: two annular spacers; the two gaskets are sleeved on the bolt and clamped between the nut and the corresponding iron core clamping piece, and two opposite surfaces of each gasket are provided with anti-skidding structures.
Furthermore, in the fastening device for fixing the iron core clamping piece, two opposite surfaces of each gasket are provided with insections to form an anti-skidding structure, the insections of one surface of each gasket are larger than those of the other surface of each gasket, the surfaces of the two gaskets with larger insections are in relative occlusion connection, and the surfaces of the two gaskets with smaller insections are in one-to-one corresponding contact with the nut and the corresponding iron core clamping piece respectively.
Further, in the above-described fastening device for fixing a core clip, a slope of a tooth surface of a side of each of the spacers having a larger insection is larger than a slope of a thread of the bolt.
Further, in the fastening device for fixing the core clamp, the inner diameter of the insulating member is smaller than the diameter of the through hole formed in the corresponding core clamp at the position corresponding to the bolt.
Further, in the above-described fastening device for fixing a core clip, the shielding mechanism includes: a first shielding mechanism and a second shielding mechanism; the first shielding mechanism is arranged at a fixing nut of the bolt and is used for electrically shielding the fixing nut of the bolt; the second shielding mechanism is arranged at the nut and used for electrically shielding the nut.
Further, in the fastening device for fixing a core clip, the first shielding mechanism includes: a first arc-shaped body and a connecting mechanism; the first arc-shaped body cover is arranged outside the fixing nut of the bolt, and a preset gap is formed between the first arc-shaped body cover and the fixing nut of the bolt; the first arc-shaped body is connected with a connecting mechanism, and the connecting mechanism is arranged on the insulating part and is in contact with a fixing nut of the bolt.
Furthermore, in the fastening device for fixing the iron core clamp, the insulating piece is provided with an annular bulge part extending towards a fixing nut of the bolt, the inner diameter of the bulge part is the same as that of the insulating piece, and the outer diameter of the bulge part is smaller than that of the insulating piece; the connecting mechanism includes: a first connecting body and an annular body; the annular body is sleeved outside the protruding portion and clamped between a fixing nut of the bolt and the insulating piece, and the annular body is connected with the first arc-shaped body through the first connecting body.
Further, in the fastening device for fixing a core clip, the second shielding mechanism includes: a second arcuate body and a second connector; wherein, the second arc body cover is arranged outside the nut and has a preset gap with the nut, and the second arc body is connected with the anti-loosening mechanism through the second connector.
Further, in the above-described fastening device for fixing an iron core clip, the second arc-shaped body is connected to one of the spacers through the second connecting body.
According to the invention, the bolt penetrates through the two iron core clamping pieces and then is in threaded connection with the nut, the anti-loosening mechanism is arranged between the nut and the corresponding iron core clamping piece, the nut can be effectively prevented from loosening, the two iron core clamping pieces are ensured to stably clamp a plurality of silicon steel sheets, further, the stability of the iron core structure is ensured, the internal discharge of equipment is avoided, the problem that the nut is easy to loosen in the fastening structure of the screw nut for fixing the iron core in the prior art is solved, in addition, the insulation piece is arranged, so that one end of the fixing nut of the bolt is relatively insulated with the iron core clamping pieces, the single-point electrical connection between the bolt, the nut and the iron core clamping pieces can be ensured, the arrangement of the shielding mechanism can play a role in electrical shielding, and the point discharge of the fixing nut end and the fixing nut end of the bolt under the action of an electric field is prevented.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural view of a fastening device for fixing a core clip according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a spacer in the fastening device for fixing an iron core clip according to an embodiment of the present invention;
fig. 3 is a schematic structural view of one surface of a spacer in the fastening device for fixing a core clip according to an embodiment of the present invention;
fig. 4 is a schematic structural view of another surface of a spacer in the fastening device for fixing an iron core clip according to the embodiment of the present invention;
fig. 5 is a schematic structural view of an insulating member in the fastening device for fixing the core clip according to the embodiment of the present invention;
fig. 6 is a schematic structural view of a first shielding mechanism in the fastening device for fixing the core clip according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be understood by those skilled in the art that a plurality of silicon steel sheets are stacked and two core clamps 4 are respectively placed on both sides of the stacked plurality of silicon steel sheets, and then the core clamps 4 are fixed by the core clamp fixing fastening device in the present embodiment.
Referring to fig. 1, fig. 1 is a schematic structural view of a fastening device for fixing a core clip according to an embodiment of the present invention. As shown in the drawings, the core clamp fixing fastening device includes: bolt 1, nut 2, insulator 3, locking release mechanism and shielding mechanism. The two core clamps 4 are arranged in parallel, and a plurality of silicon steel sheets (not shown in the figure) are clamped between the two core clamps 4. The bolt 1 sequentially penetrates through the two iron core clamping pieces 4 and is in threaded connection with the nut 2, so that the two iron core clamping pieces 4 are fixed together to form an iron core structure. Specifically, the body of the bolt 1 is a threaded rod, one end of the bolt 1 is provided with a fixing nut 11, and the other end of the bolt 1 is screwed with the nut 2.
During concrete implementation, the bolt 1 and the nut 2 can be made of high-strength low-permeability steel, so that the requirement on strength is met, and eddy current heating is avoided from being generated inside. In specific implementation, the bolt 1 may be replaced by a screw, and the fixing nut 11 of the bolt 1 may be replaced by a nut.
The anti-loosening mechanism is arranged between the nut 2 and the iron core clamping pieces 4 on the corresponding side and is used for preventing the nut 2 from loosening, and therefore the two iron core clamping pieces 4 are guaranteed to be fastened.
The insulating member 3 is in a ring shape, the insulating member 3 is sleeved on the bolt 1, and the insulating member 3 is clamped between the fixing nut 11 of the bolt 1 and the iron core clamping piece 4 on the corresponding side, so that one end of the fixing nut 11 of the bolt 1 is relatively insulated from the iron core clamping piece 4, and a single-point electrical connection is formed among the bolt 1, the nut 2 and the iron core clamping piece 4, namely the bolt 1 is electrically communicated with the two iron core clamping pieces 4 through the nut 2, and one end of the fixing nut 11 of the bolt 1 is in an insulating state, so that the phenomena of floating potential and current circulation are avoided.
In specific implementation, the material of the insulating member 3 may be an organic insulating material or a non-conductive material such as ceramic.
Preferably, the inner diameter of the insulator 3 is smaller than the diameter of the through hole of the corresponding core clamp 4 corresponding to the bolt 1. Specifically, the iron core clamp 4 corresponding to the fixing nut 11 side of the bolt 1 is provided with a through hole for the bolt 1 to pass through, and the inner diameter of the insulator 3 is smaller than the aperture of the through hole. Thus, direct contact between the bolt 1, the nut 2 and the core clamp 4 can be effectively prevented, and heat generation of metal components such as the core clamp 4 and the bolt 1 caused by circulation due to a loop formed between the bolt 1, the nut 2 and the core clamp 4 can be avoided.
The shielding mechanism is arranged on the bolt 1 and used for electrically shielding two ends of the bolt 1 and preventing point discharge of the fixed nut end and the nut end of the bolt 1 under the action of an electric field.
It can be seen that, in this embodiment, the bolt 1 is threaded through the two iron core clamping pieces 4 and then is in threaded connection with the nut 2, the anti-loosening mechanism is arranged between the nut 2 and the corresponding iron core clamping piece 4, the nut 2 can be effectively prevented from loosening, the two iron core clamping pieces 4 are ensured to stably clamp a plurality of silicon steel sheets, further, the stability of the iron core structure is ensured, the internal discharge of the equipment is avoided, the problem that the nut is easy to loosen in the fastening structure of the screw nut for fixing the iron core in the prior art is solved, in addition, the one end of the fixing nut 11 of the bolt 1 is relatively insulated from the iron core clamping piece 4 by the arrangement of the insulating piece 3, the single-point electrical connection between the bolt 1, the nut 2 and the iron core clamping piece 4 can be ensured, the arrangement of the shielding mechanism can play a role in electrical shielding, and the point discharge of the fixing nut end and the nut end of the bolt 1 under the electric field effect is prevented.
Referring to fig. 1 to 4, in the above embodiment, the anti-release mechanism may include: two spacers 5. The two gaskets 5 are annular, the two gaskets 5 are sleeved on the bolt 1, and the two gaskets 5 are clamped between the nut 2 and the iron core clamping piece 4 on the corresponding side. Specifically, each spacer 5 may be made of high strength, low permeability steel.
Every gasket 5 two relative faces all are provided with anti-skidding structure, and specifically, every gasket 5 all has first face and second face, and first face and second face are relative setting, and the first face and the second face of every gasket 5 all are provided with anti-skidding structure. The anti-slip structure is provided to prevent the two spacers 5 from sliding, and to prevent one of the spacers 5 from sliding relative to the nut 2, and to prevent the other spacer 5 from sliding relative to the core holder 4 on the corresponding side, so as to prevent the nut 2 from sliding relative to the core holder 4 on the corresponding side, and to prevent the nut 2 from being loosened.
Preferably, two opposite faces of each pad 5 are provided with insections to form an anti-slip structure, i.e. the first face and the second face of each pad 5 are provided with insections. One of the insections of each pad 5 is larger than the insections of the other, that is, one side of each pad 5 is large insection and the other side is small insection. The surfaces with larger insections of the two gaskets 5 are relatively meshed and connected, the surfaces with smaller insections of the two gaskets 5 are respectively contacted with the nut 2 and the iron core clamping pieces 4 on the corresponding sides in a one-to-one correspondence manner, and specifically, the surfaces with larger insections of the two gaskets 5 are relatively meshed and meshed with each other, so that the friction force between the two gaskets 5 is increased. One side of one gasket 5 with smaller insections is contacted with the nut 2 to increase the friction force between the gasket 5 and the nut 2; the other spacer 5 has a smaller insection surface contacting the corresponding side core holder 4 to increase the frictional force between the spacer 5 and the corresponding side core holder 4. Like this, increase frictional force through set up the insection at gasket 5, form anti-skidding structure, can prevent the slip of two gaskets 5 effectively to, the insection on two gaskets 5 can play the effect of locking when the iron core takes place to vibrate, makes nut 2 and bolt 1's screw thread lock mutually, avoids nut 2 pine to take off, has improved fastening effect.
More preferably, the slope of the tooth surface of the side with larger insection of each gasket 5 is larger than the slope of the thread of the bolt 1, i.e. the lifting distance of the gasket 5 is larger than the lifting distance of the thread. Therefore, when the nut 2 is dislocated due to vibration, the lifting distance of the gasket 5 is larger than that of the thread, so that the nut 2 is ensured to be always kept in a locking state.
It can be seen that, in the embodiment, the two opposite surfaces of each gasket 5 are provided with the anti-slip structures, so that the nut 2 is effectively prevented from being loosened, the fastening effect is improved, the stability of the iron core structure is ensured, and the internal discharge of the equipment is avoided. And, through two gaskets 5 and nut 2 and the direct contact connection of iron core folder 4, realized the single-point electrical connection between this fastener and the iron core folder 4, formed electrical connectivity, guaranteed nut 2, gasket 5, iron core folder 4 and bolt 1 with the electric potential, avoid appearing the suspension electric potential.
Referring to fig. 1 and 6, in the above embodiment, the shielding mechanism includes: a first shielding mechanism 6 and a second shielding mechanism 7. The first shielding mechanism 6 is disposed at the fixing nut 11 of the bolt 1, and the first shielding mechanism 6 is configured to electrically shield the fixing nut 11 of the bolt 1, so as to prevent the fixing nut end of the bolt 1 from discharging under the action of an electric field. The second shielding mechanism 7 is disposed at the nut 2, and the second shielding mechanism 7 is used for electrically shielding the nut 2 to prevent the tip discharge of the nut end under the action of the electric field.
Referring to fig. 1 and 6, the first shielding mechanism 6 may include: a first arcuate body 61 and a connecting mechanism. The first arc-shaped body 61 is covered outside the fixing nut 11 of the bolt 1, and a preset gap is formed between the first arc-shaped body 61 and the fixing nut 11 of the bolt 1. Specifically, the arc of the first arc-shaped body 61 just covers the fixing nut 11 of the bolt 1 inside, and the first arc-shaped body 61 and the fixing nut 11 of the bolt 1 do not contact but have a certain gap therebetween. The preset gap may be determined according to actual conditions, and the embodiment does not limit this.
The first arc 61 is connected to a connecting mechanism, which is disposed on the insulating member 3 and contacts with the fixing nut 11 of the bolt 1. In particular, the connection means are provided at the end of the insulator 3 close to the fixing nut 11 of the bolt 1, so as to provide relative insulation between the connection means and the corresponding core clamp 4. Furthermore, the connecting mechanism contacts with the fixing nut 11 of the bolt 1, so that the first arc-shaped body 61 contacts with the fixing nut 11 of the bolt 1 through the connecting mechanism, and further performs electrical shielding. In specific implementation, the connecting mechanism and the first arc-shaped body 61 can be made of metal.
It can be seen that, in this embodiment, the first arc-shaped body 61 contacts with the fixing nut 11 of the bolt 1 through the connecting mechanism, and the first arc-shaped body 61 covers the fixing nut 11 of the bolt 1, so as to electrically shield the fixing nut 11 of the bolt 1, thereby effectively preventing the tip discharge of the fixing nut end of the bolt 1 under the action of an electric field, and having a simple structure and convenient implementation.
Referring to fig. 1 and 6, the insulating member 3 is provided with an annular protruding portion 8 extending to the fixing nut 11 of the bolt 1, the inner diameter of the protruding portion 8 is the same as the inner diameter of the insulating member 3, and the outer diameter of the protruding portion 8 is smaller than the outer diameter of the insulating member 3, so that the insulating member 3 and the protruding portion 8 are integrally in a shape of a Chinese character 'tu'. The insulator 3 and the boss 8 are sandwiched together between the fixing nut 11 of the bolt 1 and the core clip 4 on the corresponding side. Preferably, the insulator 3 is integrally formed with the boss 8.
The connection mechanism may include: a first connecting body 62 and an annular body 63. The annular body 63 is fitted around the boss 8, and the annular body 63 is interposed between the fixing nut 11 of the bolt 1 and the insulating member 3. Specifically, the inner diameter of the ring body 63 matches the outer diameter of the boss portion 8, the outer diameter of the ring body 63 matches the outer diameter of the insulating member 3, and the length of the ring body 63 matches the length of the boss portion 8, so that two opposite end surfaces of the ring body 63 are in one-to-one corresponding contact with the insulating member 3 and the fixing nut 11 of the bolt 1, respectively, and the ring body 63 is tightly clamped between the fixing nut 11 of the bolt 1 and the insulating member 3, so that the ring body 63 can be in contact with the fixing nut 11 of the bolt 1.
The annular body 63 is connected with the first arc-shaped body 61 through the first connecting body 62, and the arrangement position and structure of the annular body 63 can ensure that the annular body 63 is insulated from the corresponding iron core clamping piece 4 through the insulating piece 3, namely, the insulation between the first arc-shaped body 61 and the corresponding iron core clamping piece 4 is ensured. Because the annular body 63 is in contact with the fixing nut 11 of the bolt 1, the contact between the first arc-shaped body 61 and the fixing nut 11 of the bolt 1 can be ensured, the end part of the bolt 1 is electrically shielded by the first arc-shaped body 61, and the point discharge of the fixing nut 11 of the bolt 1 under the action of an electric field is effectively prevented.
In specific implementation, the first connecting body 62, the first arc-shaped body 61 and the annular body 63 can be made of metal. Preferably, the first arc-shaped body 61, the first connecting body 62 and the annular body 63 are integrally formed, so that the processing and manufacturing are convenient.
It can be seen that, in this embodiment, the annular body 63 is sleeved on the protruding portion 8 of the insulating member 3, so that the first arc-shaped body 61 is fixed, the first arc-shaped body 61 is ensured to be stably covered outside the fixing nut 11 of the bolt 1, insulation between the first arc-shaped body 61 and the iron core clamp 4 is realized, the annular body 63 is in contact with the fixing nut of the bolt 1, normal operation of the first arc-shaped body 61 can be ensured, and electrical shielding of the fixing nut end of the bolt 1 is realized.
Referring to fig. 1, in the above embodiments, the second shielding mechanism 7 may include: a second arc-shaped body 71 and a second connecting body 72. The second arc-shaped body 71 covers the outer portion of the nut 2, and a preset gap is formed between the second arc-shaped body 71 and the nut 2. In particular, the arc of the second arc-shaped body 71 just covers the nut 2 inside, and there is no contact but a certain clearance between the second arc-shaped body 71 and the nut 2. In specific implementation, the preset gap may be determined according to actual conditions, and this embodiment does not limit this.
The second arc-shaped body 71 is connected to the anti-loosening mechanism via a second connecting body 72, in particular the second arc-shaped body 71 is connected to one of the spacers 5 via the second connecting body 72, to prevent a tip discharge of the nut 2 under the influence of an electric field. Preferably, the second arc-shaped body 71 and the second connecting body 72 are integrally formed with any one of the gaskets 5, so that the gasket is convenient to process and manufacture.
In specific implementation, both the second arc-shaped body 71 and the second connector 72 can be made of metal.
It can be seen that, in this embodiment, the second arc-shaped body 71 is connected with one of the spacers 5 in the anti-loosening mechanism through the second connecting body 72, so that the second arc-shaped body 71 is ensured to stably cover the outside of the nut 2, and further, the nut 2 can be electrically shielded, tip discharge of the nut end under the action of an electric field is effectively prevented, and the structure is simple and convenient to implement.
In summary, in the present embodiment, the anti-loosening mechanism is disposed between the nut 2 and the corresponding iron core clamp 4, so as to effectively prevent the nut 2 from loosening, ensure that the two iron core clamps 4 stably clamp a plurality of silicon steel sheets, further ensure the stability of the iron core structure, and avoid internal discharge of the apparatus, and the insulating member 3 is disposed so that one end of the fixing nut 11 of the bolt 1 is relatively insulated from the iron core clamps 4, so as to ensure that the bolt 1, the nut 2 and the iron core clamps 4 form a single-point electrical connection, and the shielding mechanism is disposed so as to play a role of electrical shielding, thereby preventing the tip discharge of the fixing nut end and the fixing nut end of the bolt 1 under the action of the electric field.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A fastening device for fixing a core clip, comprising: the bolt (1), the nut (2), the annular insulating part (3), the anti-loosening mechanism and the shielding mechanism; wherein the content of the first and second substances,
the bolt (1) sequentially penetrates through the two iron core clamping pieces (4) which are arranged in parallel and is in threaded connection with the nut (2);
the anti-loosening mechanism is arranged between the nut (2) and the corresponding iron core clamping piece (4) and is used for preventing the nut (2) from loosening; the anti-loosening mechanism is made of the same material as that of the bolt (1) and that of the nut (2);
the insulating part (3) is sleeved on the bolt (1) and clamped between a fixing nut (11) of the bolt (1) and a corresponding iron core clamping piece (4), so that the fixing nut (11) of the bolt (1) and the corresponding iron core clamping piece (4) are relatively insulated, a single-point electrical connection is formed among the bolt (1), the nut (2) and the iron core clamping piece (4), the bolt (1) is electrically communicated with the two iron core clamping pieces (4) through the nut (2), and one end of the fixing nut (11) of the bolt (1) is in an insulating state, so that the phenomena of suspension potential and current circulation are avoided;
the shielding mechanism is arranged on the bolt (1) and used for electrically shielding two ends of the bolt (1).
2. A core clamp fixing fastening device as recited in claim 1, wherein said release preventing means comprises: two annular gaskets (5); wherein the content of the first and second substances,
the two gaskets (5) are sleeved on the bolt (1) and clamped between the nut (2) and the corresponding iron core clamping piece (4), and two opposite surfaces of each gasket (5) are provided with anti-skidding structures.
3. A fastening device for fixing a core clip according to claim 2, wherein two opposite surfaces of each of the spacers (5) are provided with insections to form the anti-slip structure, the insection of one surface of each of the spacers (5) is larger than that of the other surface, the surface of the two spacers (5) having a larger insection is engaged with each other, and the surface of the two spacers (5) having a smaller insection is in one-to-one contact with the nut and the corresponding core clip (4), respectively.
4. A fastening device for fixing a core clip according to claim 3, wherein a slope of a tooth surface of a side of each washer (5) having a larger insection is larger than a slope of a thread of the bolt (1).
5. A fastening device for fixing a core holder according to claim 1, wherein the insulator (3) has an inner diameter smaller than the diameter of a through hole formed in the corresponding core holder (4) at a position corresponding to the bolt (1).
6. A core clamp fixing fastening device as defined in claim 1, wherein said shielding mechanism comprises: a first shielding mechanism (6) and a second shielding mechanism (7); wherein the content of the first and second substances,
the first shielding mechanism (6) is arranged at a fixing nut (11) of the bolt (1) and is used for electrically shielding the fixing nut (11) of the bolt (1);
the second shielding mechanism (7) is arranged at the nut (2) and used for electrically shielding the nut (2).
7. A core clamp fixing fastening device according to claim 6, wherein the first shielding mechanism (6) comprises: a first arc-shaped body (61) and a connecting mechanism; wherein, the first and the second end of the pipe are connected with each other,
the first arc-shaped body (61) is covered outside the fixing nut (11) of the bolt (1) and has a preset gap with the fixing nut (11) of the bolt (1);
the first arc-shaped body (61) is connected with the connecting mechanism, and the connecting mechanism is arranged on the insulating part (3) and is in contact with a fixing nut (11) of the bolt (1).
8. The core holder fixing fastening device as set forth in claim 7, wherein,
an annular bulge part (8) is arranged at the position, extending towards a fixing nut (11) of the bolt (1), of the insulating part (3), the inner diameter of the bulge part (8) is the same as that of the insulating part (3), and the outer diameter of the bulge part (8) is smaller than that of the insulating part (3);
the connecting mechanism includes: a first connecting body (62) and an annular body (63); the annular body (63) is sleeved outside the protruding portion (8) and clamped between a fixing nut (11) of the bolt (1) and the insulating piece (3), and the annular body (63) is connected with the first arc-shaped body (61) through the first connecting body (62).
9. A fastening device for fixing a core clip according to claim 6, wherein said second shielding mechanism (7) comprises: a second arc-shaped body (71) and a second connecting body (72); wherein, the first and the second end of the pipe are connected with each other,
the second arc-shaped body (71) is covered outside the nut (2) and has a preset gap with the nut (2), and the second arc-shaped body (71) is connected with the anti-loosening mechanism through the second connecting body (72).
10. A core-clip fixing fastening device as defined in claim 9, wherein said second arc-shaped body (71) is connected to one of said spacers (5) by said second connecting body (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017678.6A CN111180171B (en) | 2020-01-08 | 2020-01-08 | Fastening device for fixing iron core clamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010017678.6A CN111180171B (en) | 2020-01-08 | 2020-01-08 | Fastening device for fixing iron core clamp |
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| CN111180171A CN111180171A (en) | 2020-05-19 |
| CN111180171B true CN111180171B (en) | 2022-12-23 |
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| CN202262222U (en) * | 2011-10-25 | 2012-05-30 | 保定天威集团有限公司 | Shielding case for shielding discharge at pointed end of end part of bolt |
| CN102510710A (en) * | 2011-10-25 | 2012-06-20 | 保定天威集团有限公司 | Shielding cover and method for shielding point discharge at bolt end by using shielding cover |
-
2020
- 2020-01-08 CN CN202010017678.6A patent/CN111180171B/en active Active
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| JPS6313313A (en) * | 1986-07-04 | 1988-01-20 | Toshiba Corp | Iron core type reactor with gap |
| JPH01276608A (en) * | 1988-04-28 | 1989-11-07 | Hitachi Ltd | Clamping structure of reactor iron core |
| CN2559823Y (en) * | 2002-07-31 | 2003-07-09 | 朴明基 | Anti-loosing self-locking washer |
| CN201181621Y (en) * | 2008-03-26 | 2009-01-14 | 英博白云电气技术（扬州）有限公司 | Low-loss iron core reactor |
| CN202262222U (en) * | 2011-10-25 | 2012-05-30 | 保定天威集团有限公司 | Shielding case for shielding discharge at pointed end of end part of bolt |
| CN102510710A (en) * | 2011-10-25 | 2012-06-20 | 保定天威集团有限公司 | Shielding cover and method for shielding point discharge at bolt end by using shielding cover |
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| CN111180171A (en) | 2020-05-19 |
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