CN115240965B - Fuse is used in transformer protection - Google Patents
Fuse is used in transformer protection Download PDFInfo
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- CN115240965B CN115240965B CN202210935754.0A CN202210935754A CN115240965B CN 115240965 B CN115240965 B CN 115240965B CN 202210935754 A CN202210935754 A CN 202210935754A CN 115240965 B CN115240965 B CN 115240965B
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- locking
- column
- fuse
- block
- elastic plate
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/201—Bases for supporting the fuse; Separate parts thereof for connecting a fuse in a lead and adapted to be supported by the lead alone
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
Abstract
The invention discloses a fuse for protecting a transformer, which comprises an insulating support, a sleeve, a fuse wire arranged in the sleeve, a connecting frame arranged at one end of the insulating support, and an elastic plate, wherein a connecting column is fixedly arranged on the elastic plate, the connecting column is detachably connected to the connecting frame through a connecting component, a torque spring is also arranged on the connecting column, and the elastic plate tightly supports the fuse wire under the elasticity of the torque spring; still include a locking mechanism, it sets up in the projection on the link after the elastic plate compresses the torque spring, drive locking mechanism and carry out the locking to coupling assembling, in order to restrict the elastic plate is bounced open. The fuse protector for protecting the transformer can limit the movement of the elastic plate, so that the elastic plate is always in the state, namely the compressed state, and the installation of the fuse wire is greatly facilitated without manually pressing the elastic plate when the fuse wire is installed.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a fuse for protecting a transformer.
Background
As is known, in order to convert a 10kV high voltage into a 220V low voltage of a user, a transformer is used to convert the high voltage into the low voltage, in the prior art, a fuse is disposed on the transformer, which is commonly a drop-out fuse installed on a branch line of a 10kV distribution line, and the drop-out fuse has a function of reducing a power failure range, and has a function of an isolating switch, so as to create a safe operating environment for a line and equipment in an overhaul section, and is a most commonly used short-circuit protection switch, specifically, after the function, when a short-circuit current is fused through a fuse, an upper moving contact and a lower moving contact of a bushing lose a fastening force of the fuse due to the fuse, and the bushing rapidly drops off to disconnect a circuit and cut off the line or fault equipment in a fault section under the actions of the gravity of the bushing and spring leaves of the upper and the lower static contacts; then, when the fuse is installed, the fuse is firstly installed on the locking screw on one end of the fuse, and then in order to support the fuse tightly, an elastic plate with elasticity is arranged on the existing fuse to support the fuse, so that the tightness degree of the fuse is improved, and better operation is facilitated.
For example, the chinese patent with the application number of "202010056307.9" entitled "a drop-out fuse", the patent is that the extrusion end cooperates with the first step before falling, so that the fastening end is fastened with the fixing protrusion, and the sleeve body is ensured not to fall off when there is no fault, and has a windproof function.
The defects of the prior art are as follows: in the prior art, because an elastic plate with a spring is arranged to abut against the fuse surface of the fuse, in the prior art and the scheme described in the patent, the elastic plate needs to be pressed all the time in the whole process of installing the fuse, and then the fuse can be installed on the locking screw, so that the installation is inconvenient, and the installation stability of the fuse is influenced.
Disclosure of Invention
The invention aims to provide a fuse for protecting a transformer, which aims to solve the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a fuse for protecting a transformer comprises an insulating support, a sleeve, a fuse wire arranged in the sleeve, a connecting frame arranged at one end of the insulating support, an elastic plate, a connecting column and a torque spring, wherein the connecting column is fixedly arranged on the elastic plate and detachably connected to the connecting frame through a connecting component;
still include a locking mechanism, it sets up in the projection on the link after the elastic plate compresses the torque spring, drive locking mechanism and carry out the locking to coupling assembling, in order to restrict the elastic plate is bounced open.
In a further provided aspect of this embodiment, the locking device further includes a pressing block slidably disposed at one end of the protruding pillar, and the pressing block can contact the locking mechanism; and when the pressing block is pulled outwards, the limit of the locking mechanism on the connecting assembly can be unlocked.
In the further scheme that provides in this embodiment, coupling assembling is including the sliding block of slip setting on the spliced pole, just be provided with the second elastic component between sliding block and the spliced pole, under its elasticity, the sliding block can be pegged graft to in the projection.
In a further provided scheme in this embodiment, the locking mechanism includes a transmission column rotatably disposed in the convex column and a locking sleeve slidably sleeved on the transmission column, and the locking sleeve can rotate synchronously with the transmission column; the sliding block can be connected to the transmission post so as to drive the transmission post to synchronously rotate.
In the further scheme that provides in this embodiment, the locking piece that slides in the projection along locking telescopic axial direction is provided with, and is provided with the locking groove in adaptation locking piece on the locking sleeve the locking piece is pegged graft to the locking inslot in order to restrict locking sleeve rotates.
In the further scheme that provides in this embodiment, the helicla flute has been seted up on the locking sleeve, just be provided with the helical groove post of pegging graft in the helicla flute in the projection, when the locking sleeve is rotatory, under the effect of helical groove post, can make the locking sleeve move to the direction of locking piece gradually to make the locking piece peg graft to the locking inslot.
In a further provided scheme in this embodiment, a locking assembly for locking the fuse is further provided on the link, the locking assembly is provided with a fixed column on the link, a pressing block is sleeved on the fixed column, a first elastic piece is sleeved on an outer wall of the fixed column, the first elastic piece abuts against the pressing block, and the fuse is locked between the pressing block and the coupling nut.
In a further provided scheme in this embodiment, an oblique extrusion groove is formed in a position in the middle of the compression block, a clamping block is slidably disposed below the fixed column in the radial direction, an extrusion column is fixedly disposed on one side of the clamping block, the fuse wire is wound around and passes through the placement groove on the extrusion column, the extrusion column is rotatably disposed on one side of the clamping block, and the extrusion column can move along the oblique extrusion groove, drive the compression block to move downward, and extrude the fuse wire.
In a further provided solution in this embodiment, the placing groove on the clamping block is disposed toward a direction opposite to the elastic plate.
In a further aspect of this embodiment, a copper foil is spirally wound on the fuse, and the copper foil is tightly contacted with the elastic plate.
In the technical scheme, the fuse for protecting the transformer provided by the invention has the following beneficial effects:
according to the invention, the locking mechanism is arranged in the convex column arranged on the connecting frame, and can lock the connecting component arranged on the elastic plate for shifting after the elastic plate is compressed, so that the movement of the elastic plate can be limited, and the elastic plate is always in the state, namely the compressed state, so that when a fuse is installed, the elastic plate is not required to be manually pressed, namely, the elastic plate can be always prevented from generating tension force on the fuse, the installation of the fuse is greatly facilitated, the supporting force of the elastic plate on the fuse can be further ensured, the loosening condition is greatly reduced, and the use effect is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of an overall structure provided by an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a portion A according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a connecting frame and an elastic plate according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an elastic plate and a connecting column according to an embodiment of the present invention;
FIG. 5 is a schematic view of a mounting structure of a copper foil and a connecting frame according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a connection nut, a fixing column, and a pressing block according to an embodiment of the present invention;
FIG. 7 is an exploded view of a locking assembly according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a locking assembly according to an embodiment of the present invention;
fig. 9 is an exploded view of the connecting assembly and the locking assembly according to the embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a clamping block provided in an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a connecting column and a connecting frame according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a cross section of a convex column according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view of a locking assembly according to an embodiment of the present invention;
fig. 14 is a schematic cross-sectional structure view of a locking block and an inclined abutting block according to an embodiment of the present invention.
Description of reference numerals:
1. an insulating support; 2. a sleeve; 21. a spring clamp seat; 22. a fuse; 221. a copper foil; 3. a connecting frame; 31. a convex column; 311. a spiral grooved column; 312. a pressing block; 313. a locking block; 5. a connecting nut; 51. fixing a column; 511. a first elastic member; 52. a clamping block; 521. extruding the column; 522. a placement groove; 53. a compression block; 531. an oblique extrusion groove; 6. a locking block; 61. an oblique resisting block; 7. an elastic plate; 71. connecting columns; 711. a slider; 7111. a second elastic member; 701. a connecting clamping groove; 72. a torque spring; 8. a locking sleeve; 81. a drive post; 811. connecting a clamping block; 801. a helical groove; 802. and a locking groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "including" or "comprising" and the like in this disclosure is intended to mean that the elements or items listed before that word, and equivalents thereof, are included without exclusion of other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Please refer to fig. 1-14, a fuse for transformer protection, comprising an insulating support 1, a bushing 2, a fuse wire 22 arranged in the bushing 2, a connecting frame 3 arranged at one end of the insulating support 1, and an elastic plate 7, wherein the elastic plate 7 is fixedly provided with a connecting column 71, and is detachably connected to the connecting frame 3 through the connecting column 71 by a connecting assembly, the connecting column 71 is further provided with a torque spring 72, and the elastic plate 7 tightly supports the fuse wire 22 under the elastic force; still include a locking mechanism, it sets up in the projection 31 on link 3, after the elastic plate 7 compression torque spring 72, drives locking mechanism and carries out the locking to coupling assembling to restriction elastic plate 7 pops open.
Specifically, according to the invention, the locking mechanism is arranged in the convex column 31 arranged on the connecting frame 3, and can lock the connecting component arranged on the elastic plate 7 for shifting after the elastic plate 7 is compressed, so that the movement of the elastic plate 7 can be limited, and the elastic plate 7 is always in the state, namely the compressed state, so that when the fuse wire 22 is installed, the elastic plate 7 does not need to be manually pressed, namely, the elastic plate 7 can be always prevented from generating a tightening force on the fuse wire 22, so that the installation of the fuse wire 22 is greatly facilitated, the tightening force of the elastic plate 7 on the fuse wire 22 can be further ensured, the loosening condition is greatly reduced, and the use effect is improved.
In a further embodiment of the present invention, the present invention further includes a pressing block 312 slidably disposed at one end of the protruding pillar 31, and the pressing block 312 can contact with the locking mechanism; and when the pressing block 312 is pulled outwards, the limitation of the locking mechanism on the connecting assembly can be unlocked.
Further, the connecting assembly comprises a sliding block 711 arranged on the connecting column 71 in a sliding manner, a second elastic part 7111 is arranged between the sliding block 711 and the connecting column 71, under the elastic force of the second elastic part, the sliding block 711 can be inserted into the convex column 31, then the locking mechanism comprises a transmission column 81 rotatably arranged in the convex column 31 and a locking sleeve 8 slidably sleeved on the transmission column 81, and the locking sleeve 8 can rotate synchronously with the transmission column 81; the sliding block 711 can be connected to the transmission post 81 to drive the transmission post 81 to rotate synchronously; specifically, the elastic plate 7 can be quickly mounted on the connecting frame 3 through the provided connecting assembly, specifically, when the elastic plate is mounted, the connecting column 71 at one end far away from the convex column 31 is mounted on the connecting frame 3, then the sliding block 711 is compressed to be positioned in the groove formed in the convex column 31 and then is inserted into the groove of the convex column 31, namely, the connecting fixture block 811 fixedly arranged on the transmission column 81 corresponds to the groove formed in the convex column 31, and then the connecting fixture block 811 is inserted into the connecting fixture groove 701, namely, the mounting is finished.
The locking block 313 is slidably disposed in the boss 31 along the axial direction of the locking sleeve 8, and the locking sleeve 8 is provided with a locking groove 802 adapted to the locking block 313, and the locking block 313 is inserted into the locking groove 802 to limit the rotation of the locking sleeve 8. The locking sleeve 8 is provided with a spiral groove 801, the convex column 31 is internally provided with a spiral groove column 311 inserted in the spiral groove 801, when the locking sleeve 8 rotates, the locking sleeve 8 can gradually move towards the locking block 313 under the action of the spiral groove column 311, and the locking block 313 is inserted into the locking groove 802.
Further, the connecting frame 3 is further provided with a locking assembly for locking the fuse 22, the locking assembly is arranged on a fixed column 51 on the connecting frame 3, a pressing block 53 is sleeved on the fixed column 51, a first elastic element 511 is sleeved on the outer wall of the fixed column 51, the first elastic element 511 abuts against the pressing block 53, the fuse 22 is locked between the pressing block 53 and the connecting nut 5, an inclined pressing groove 531 is arranged at the position in the middle of the pressing block 53, a clamping block 52 is arranged below the fixed column 51 in a sliding manner in the radial direction, a pressing column 521 is fixedly arranged on one side of the clamping block 52, the fuse 22 is wound and passes through a placing groove 522 on the pressing column 521, the pressing column 521 is rotatably arranged on one side of the clamping block 52, the pressing column 521 can move along the inclined pressing groove 531, the pressing block 53 is driven to move downwards and is pressed on the fuse 22, the connecting nut 5 is arranged on the connecting frame 3, the fixing column 51 is arranged on the connecting nut 5, and the pressing block 53 for clamping the fuse 22 is arranged on the fixing column 51, so that when the fuse 22 is installed, the fuse 22 can be directly installed below the pressing block 53, and then the pressing block 53 presses the fuse 22 under the elastic force of the first elastic piece 511, so that the installation efficiency is greatly improved, and the screwing of screws is not needed, and the invention can enable the fuse 22 to pull the clamping block 52 through the arranged pressing block 53 and the inclined pressing groove 531 and then to be matched with the clamping block 52 when the elastic plate 7 bounces the fuse 22, so that the pressing column 521 arranged on the clamping block 52 is pressed on the inclined pressing groove 531, so that the pressing block 53 can be driven to have a tendency of moving towards the fuse 22, thereby, the fusible link 22 can be further compressed to improve the connection tightness of the fusible link 22, so that the elastic force of the elastic plate 7 can be converted into a clamping force between the fusible link 22 and the pressing block 53.
Further, the placing groove 522 on the clamping block 52 is disposed opposite to the elastic plate 7, specifically, the clamping block 52 is provided with a bent placing groove 522 for accommodating and winding the fuse 22, and the direction of the placing groove 522 is opposite to the elastic plate 7, i.e. the tension on the fuse 22 acts on the clamping block 52, so that the clamping block 52 can have a tendency to move towards the pressing block 53, so as to drive the pressing block 53 to have a tendency to move towards the fuse 22, and further press the fuse 22.
In a further embodiment of the present invention, the fuse 22 is spirally wound with a copper foil 221, and the copper foil 221 is tightly contacted with the elastic plate 7. Specifically, in the present invention, the copper foil 221 is wound around the periphery of the fuse 22, and the copper foil 221 has a conductive function, that is, after the elastic plate 7 is wrapped by the copper foil 221, the copper foil 221 contacts the elastic plate 7, so as to protect the internal fuse 22, thereby greatly reducing the occurrence of breakage of the fuse 22 due to the elastic force of the elastic plate 7, and ensuring the normal use of the fuse 22.
Further, as shown in fig. 5, the connecting frame 3 is rotatably provided with a locking block 6, the locking block 6 is provided with a locking groove, the locking groove can be used for placing one end of the fuse 22, that is, when the fuse 22 is installed, the fuse 22 can be wound in a placing groove 522 arranged on a clamping block 52 arranged on a fixed column 51, then one end of the fuse 22 is pressed and inserted into the locking groove arranged on the locking block 6, that is, one end of the fuse 22 can be fixed in advance, even when the subsequent elastic plate 7 is bounced, the fuse 22 is clamped, specifically, the locking block 6 is provided with an inclined abutting block 61, the inclined abutting block 61 is slidably arranged in an inclined shape, that is, when the fuse 22 is inserted into the locking block 6, the fuse 22 can abut against the two inclined abutting blocks 61, as shown in fig. 14, the direction of the fuse 22 is shown in the direction of the arrow in the drawing, that is, that when the fuse 22 is inserted into the locking block 6, the wedge-shaped abutting block has a wedge-shaped movement in the direction towards the fuse 22, that is, the larger the tensile force of the inclined abutting block 6 is larger, the end of the fuse 22 is more increased.
Before installing the fuse 22, the elastic plate 7 is compressed, specifically, when the elastic plate 7 is compressed, the elastic plate 7 rotates in the direction opposite to the elasticity of the torque spring 72, that is, the elastic plate 7 drives the connecting column 71 connected to the connecting column 71 and the sliding block 711 rotating synchronously with the connecting column 71 to rotate, so that the driving column 81 connected to the connecting column can be driven to rotate, the locking sleeve 8 connected to the elastic plate can be driven to rotate when the elastic plate rotates, the spiral groove column 311 can be arranged in the spiral groove 801, and because the spiral groove column 311 is fixedly arranged on the convex column 31, the spiral groove column 311 drives the locking sleeve 8 to drive the locking sleeve to move in the direction of the locking block 313 under the extrusion in the spiral groove 801, so that the locking block 313 is gradually inserted into the locking groove 802, so as to lock the sleeve, that the locking sleeve 8 is locked, so that the driving column 81 and the sliding block 711 are synchronously locked, that the elastic plate 7 can be locked, and the elastic plate 7 is in a compressed state.
Firstly, the fixing column 51 is mounted on the connecting frame 3 through the connecting nut 5, the pressing block 53 is manually pushed, so that the pressing block 53 can move towards the direction of the first elastic piece 511, then the fuse wire 22 is wound below the pressing block 53, the fuse wire 22 passes through the placing groove 522 arranged on the clamping block 52, then the pressing block 53 is released, the pressing block 53 is under the elastic force of the first elastic piece 511, so that the pressing block 53 presses the fuse wire 22, namely, the pressing block 53 clamps the fuse wire 22 in advance, and the pressing block 53 and the clamping block 52 are in a state as shown in fig. 13, and the pressing column 521 is at the notch position of the inclined pressing groove 531; then, the pressing block 312 is pulled outwards to drive the connected locking block 313 to move outwards, i.e. to disengage from the locking groove 802, then the locking sleeve 8, the transmission column 81, the sliding block 711 and the connecting column 71 are not controlled by the locking block 313, then the elastic plate 7 is sprung downwards under the elastic force of the torque spring 72 and abuts against the fuse 22, and after the locking sleeve 8 rotates, the locking sleeve returns to the initial state, and then when the elastic plate 7 springs up the fuse 22, the fuse 22 can be made to pull the clamping block 52, so that the clamping block 52 moves towards the fixed column 51, that is, the pressing column 521 is gradually pressed on the inclined pressing groove 531, and under the gradual pressing, the pressing block 53 moves downwards, so that the pressing block 53 can be driven to have a tendency to move towards the fuse 22, so that the fuse 22 can be pressed tightly, so that the connectivity of the fuse 22 can be improved, and the elastic force of the elastic plate 7 can be converted into the clamping force between the fuse 22 and the pressing block 53.
According to the invention, the locking mechanism is arranged in the convex column 31 arranged on the connecting frame 3, and can lock the gear-shifting connecting assembly arranged on the elastic plate 7 after the elastic plate 7 is compressed, so that the movement of the elastic plate 7 can be limited, and the elastic plate 7 is always in the state, namely the compressed state, so that when the fuse wire 22 is installed, the elastic plate 7 does not need to be manually pressed, namely, the elastic plate 7 can be always prevented from generating tension on the fuse wire 22, the installation of the fuse wire 22 is greatly facilitated, the abutting force of the elastic plate 7 on the fuse wire 22 can be further ensured, the loosening condition is greatly reduced, and the use effect is improved; and therefore the installation efficiency is greatly improved, screws do not need to be screwed, and the invention can enable the fuse 22 to pull the clamping block 52 through the arranged pressing block 53 and the inclined pressing groove 531 and then be matched with the clamping block 52, so that when the elastic plate 7 bounces the fuse 22, the pressing column 521 arranged on the clamping block 52 is pressed on the inclined pressing groove 531, the pressing block 53 can be driven to have a tendency of moving towards the direction of the fuse 22, the fuse 22 can be further pressed, the connection tightness of the fuse 22 is improved, and the elastic force of the elastic plate 7 can be converted into the clamping force between the fuse 22 and the pressing block 53.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. The fuse for protecting the transformer comprises an insulating support (1), a sleeve (2) and a fuse wire (22) arranged in the sleeve (2), and is characterized by further comprising a connecting frame (3) arranged at one end of the insulating support (1) and an elastic plate (7), wherein a connecting column (71) is fixedly arranged on the elastic plate (7), the connecting column (71) is detachably connected to the connecting frame (3) through a connecting assembly, a torque spring (72) is further arranged on the connecting column (71), and the elastic plate (7) tightly supports the fuse wire (22) under the elastic force of the torque spring;
the locking mechanism is arranged in a convex column (31) on the connecting frame (3), and after the elastic plate (7) compresses the torque spring (72), the locking mechanism is driven to lock the connecting assembly so as to limit the elastic plate (7) to be bounced open;
the locking mechanism further comprises a pressing block (312) arranged at one end of the convex column (31) in a sliding mode, and the pressing block (312) can be in contact with the locking mechanism; when the pressing block (312) is pulled outwards, the limitation of the locking mechanism on the connecting assembly can be unlocked;
the connecting assembly comprises a sliding block (711) which is arranged on the connecting column (71) in a sliding mode, a second elastic piece (7111) is arranged between the sliding block (711) and the connecting column (71), and under the elastic force of the second elastic piece, the sliding block (711) can be inserted into the convex column (31);
the locking mechanism comprises a transmission column (81) rotatably arranged in the convex column (31) and a locking sleeve (8) slidably sleeved on the transmission column (81), and the locking sleeve (8) can synchronously rotate with the transmission column (81); the sliding block (711) can be connected to the transmission column (81) to drive the transmission column (81) to rotate synchronously.
2. A transformer protection fuse as claimed in claim 1, wherein a locking block (313) is slidably disposed in the boss (31) along an axial direction of the locking sleeve (8), and a locking groove (802) adapted to the locking block (313) is disposed on the locking sleeve (8), and the locking block (313) is inserted into the locking groove (802) to limit the rotation of the locking sleeve (8).
3. A transformer protection fuse as claimed in claim 2, wherein the locking sleeve (8) has a spiral groove (801), and a spiral groove column (311) inserted into the spiral groove (801) is disposed in the convex column (31), when the locking sleeve (8) rotates, under the action of the spiral groove column (311), the locking sleeve (8) can gradually move towards the locking block (313), and the locking block (313) is inserted into the locking groove (802).
4. A transformer protection fuse according to claim 1, wherein the link (3) is further provided with a locking assembly for locking the fuse (22), the locking assembly is provided with a fixing post (51) on the link (3), the fixing post (51) is sleeved with a pressing block (53), the outer wall of the fixing post (51) is sleeved with a first elastic member (511), the first elastic member (511) abuts against the pressing block (53), and the fuse (22) is locked between the pressing block (53) and the coupling nut (5).
5. The transformer protection fuse according to claim 4, wherein an inclined extrusion groove (531) is formed in the middle of the compression block (53), the clamping block (52) is slidably arranged below the fixed column (51) in the radial direction, an extrusion column (521) is fixedly arranged on one side of the clamping block (52), the fuse wire (22) is wound around and passes through a placing groove (522) in the extrusion column (521), the extrusion column (521) is rotatably arranged on one side of the clamping block (52), and the extrusion column (521) can move along the inclined extrusion groove (531), drive the compression block (53) to move downwards and extrude the fuse wire (22).
6. A transformer protection fuse according to claim 5, characterised in that the placement slot (522) of the clamping block (52) is oriented in the opposite direction to the spring plate (7).
7. A transformer protecting fuse according to claim 1, characterized in that a copper foil (221) is spirally wound on said fuse wire (22), said copper foil (221) being in close contact with said elastic plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210935754.0A CN115240965B (en) | 2022-08-04 | 2022-08-04 | Fuse is used in transformer protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210935754.0A CN115240965B (en) | 2022-08-04 | 2022-08-04 | Fuse is used in transformer protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115240965A CN115240965A (en) | 2022-10-25 |
| CN115240965B true CN115240965B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210935754.0A Active CN115240965B (en) | 2022-08-04 | 2022-08-04 | Fuse is used in transformer protection |
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| CN (1) | CN115240965B (en) |
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| CN109037004A (en) * | 2018-08-02 | 2018-12-18 | 广东电网有限责任公司 | A kind of fuse switch of pressure fixing |
| CN114038722B (en) * | 2021-11-09 | 2023-06-27 | 广东电网有限责任公司 | Drop-out fuse |
| CN114038721B (en) * | 2021-11-09 | 2023-06-23 | 广东电网有限责任公司 | Drop-out fuse |
-
2022
- 2022-08-04 CN CN202210935754.0A patent/CN115240965B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499866A (en) * | 2017-01-09 | 2017-03-15 | 盐城市大冈石油工具厂有限责任公司 | Safe pressure relief device |
| CN210424794U (en) * | 2019-10-29 | 2020-04-28 | 永春县乾高智能科技有限公司 | Corridor is with adjusting formula emergency light |
| CN111681901A (en) * | 2020-06-24 | 2020-09-18 | 广东电网有限责任公司东莞供电局 | Isolation switch |
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| CN115240965A (en) | 2022-10-25 |
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