CN112750673A - But quick replacement's bushing type high-voltage fuse - Google Patents
But quick replacement's bushing type high-voltage fuse Download PDFInfo
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- CN112750673A CN112750673A CN202110086119.5A CN202110086119A CN112750673A CN 112750673 A CN112750673 A CN 112750673A CN 202110086119 A CN202110086119 A CN 202110086119A CN 112750673 A CN112750673 A CN 112750673A
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- fuse
- type high
- bushing type
- wall
- connecting cylinder
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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
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
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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
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
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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
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
- H01H85/1755—Casings characterised by the casing shape or form composite casing
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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
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
-
- 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
- H01H85/25—Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover
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- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Fuses (AREA)
Abstract
The invention relates to the technical field of high-voltage fuses, in particular to a bushing type high-voltage fuse capable of being replaced quickly, which comprises a porcelain piece, an upper support, an upper contact, a fusing mechanism, a lower contact and a lower support, wherein the fusing mechanism is fixedly connected with a support structure through a contact structure, the phenomenon that a worker is dropped and injured due to poor stability possibly caused by a traditional detachable fuse is avoided, a connecting cylinder between a fuse wire net and a fuse tube assembly realizes double protection of the fuse tube assembly, the position stability of the fuse tube assembly in the operation process is good, the connection state of an inner end sleeve and a limiting disc can be released by pushing an inner push rod inwards manually during replacement, the fuse tube assembly is not connected into a circuit any more, the fuse tube is ensured to be in a power-off state before being taken out, electric shock accidents are prevented from happening when the fuse tube is replaced by a worker, the fixing and the removal of the fuse tube can be realized by, the assembly and disassembly process can be completed by bare hands, the operation is convenient, and the practicability is better.
Description
Technical Field
The invention relates to the technical field of high-voltage fuses, in particular to a sleeve type high-voltage fuse capable of being replaced quickly.
Background
The high-voltage fuse is a device which is installed outdoors and used for protecting an outdoor transmission and distribution circuit transformer from being damaged by incoming line short circuit and overload current, and for the high-voltage fuse installed on an outdoor transmission line, the high-voltage fuse has the requirements of large capacity, capability of bearing instant high current and high pulse, high safety and reliability, good mechanical property and the like.
Current bushing type high-voltage fuse is when changing the fusion tube of inside, it climbs the high-tension line tower to carry the instrument by the workman, the use is lifted whole fusing structure off from the contact, change its inside fusion tube again, the working process is wasted time and energy, the wrong area of instrument or the area condition of leaking appears easily, reduce and change efficiency, and instrument and fusing structure itself drop easily in the operation process, the potential safety hazard is great, when lifting whole fusing structure off from the contact, can't guarantee that fusing structure is absolute uncharged state, the workman probably takes place the electric shock accident when the dismouting, practicality and security are not good.
Disclosure of Invention
The invention aims to provide a bushing type high-voltage fuse capable of being replaced quickly, which has the advantages of avoiding the falling and smashing injury of workers due to poor stability possibly caused by a traditional detachable fuse, greatly reducing the potential safety hazard of the high-voltage fuse in the operation process, ensuring the position stability of a fuse tube assembly in the operation process to be better, ensuring the fuse tube to be in a power-off state before being taken out, preventing electric shock accidents when the workers replace the fuse tube, completing the assembly and disassembly process by bare hands, being convenient to operate, avoiding the phenomenon of few bands or band leakage tools when the workers climb a high-voltage line tower for operation, having better practicability, solving the problems that the working process proposed in the background technology wastes time and labor, the condition of tool band error or band leakage is easy to occur, reducing the replacement efficiency, and the tools and a fusing structure are easy to fall in the operation process, and the potential safety hazard is larger, when unloading whole fusing structure from the contact, can't guarantee that the fusing structure is absolute uncharged state, the workman probably takes place the electric shock accident when the dismouting, practicality and the not good problem of security.
In order to achieve the purpose, the invention provides the following technical scheme: a bushing type high-voltage fuse capable of being replaced quickly comprises a ceramic piece, an upper support, an upper contact, a fusing mechanism, a lower contact and a lower support, wherein the upper support and the lower support are respectively installed at two ends of the ceramic piece; the fuse-link mechanism includes outer pot head, the operating ring, even a section of thick bamboo between, the apron, the butt joint stake, annular fuse frame, fuse net and fusion tube subassembly, the butt joint stake is fixed on outer terminal surface of outer pot head, the operating ring is all installed to the lateral wall of two sets of outer pot heads, the interior terminal surface of two sets of outer pot heads respectively with even both ends fixed connection of a section of thick bamboo between, even a section of thick bamboo is connected with the apron through the hinge between, even the inner wall of a section of thick bamboo and the outer wall laminating of two sets of annular fuse frames between, install fuse net between two sets of annular fuse frames, fuse net is located the outside of fuse tube subassembly, the both ends of fusion tube subassembly are wire and two sets of butt joint stake electric connection respectively.
Preferably, the fusion tube subassembly includes the extension spring, interior push rod, the push jack in the arc, the mounting bracket, spacing dish, the fusion tube dustcoat, the fusion tube, elastic rod and inner cover, the one end of interior push rod stretches into in the inside of even section of thick bamboo and the arc swing joint between, the tip of interior push rod is connected with the inner wall of even section of thick bamboo between through the extension spring, the inner wall of push jack is provided with the tooth structure in the arc, the tooth structure meshing that sets up on the tooth structure that the push jack set up through the inner wall in the arc and the spacing dish outer wall, spacing dish is connected with the one end of inner cover through the screw thread, inner cover is through elastic rod and fusion tube dustcoat fixed connection, the internally mounted of fusion tube dustcoat has the fusion tube.
Preferably, the inner wall of the limiting disc is provided with threads, the limiting disc is fixedly connected with the mounting frame through the threads arranged on the inner wall, and the bottom of the mounting frame is fixed on the inner wall of the connecting cylinder.
Preferably, a plurality of butt joint grooves are formed in the limiting disc, the butt joint grooves are of a groove body structure with the diameter of the left end groove opening larger than that of the right end groove opening, and clamping blocks are arranged on the groove walls of the butt joint grooves.
Preferably, the outer end face of the inner end sleeve is provided with a threaded ring protruding outwards, a plurality of butt-jointed piles are mounted on the outer end face of the inner end sleeve, each butt-jointed pile is provided with a clamping groove, and the clamping grooves are clamped with the clamping blocks.
Preferably, two groups of inner end sleeves are fixedly mounted at two ends of the outer fuse tube cover, the inner side end face of one group of inner end sleeves is fixedly connected with one group of annular fuse frames, and the other group of annular fuse frames is clamped with the other group of inner end sleeves.
Preferably, a buckle groove is formed in the end face of the inner end inside the sleeve, which is clamped with the annular fuse frame, and the buckle groove is clamped with a buckle fixed on the annular fuse frame.
The bushing type high-voltage fuse capable of being replaced quickly provided by the invention has the beneficial effects that:
1. this but quick replacement's bushing type high-voltage fuse, fuse-link mechanism pass through contact structure and support structure fixed connection, avoid traditional detachable fuse probably to cause drop because of the poor stability injures workman's incident by a crashing object, reduce this high-voltage fuse's potential safety hazard in the operation process by a wide margin.
2. This but quick replacement's bushing type high-voltage fuse, the fuse net is around setting up in the outside of fusion tube subassembly, and the cooperation sets up and links a section of thick bamboo between the fusion tube subassembly outside and carry out duplicate protection to the fusion tube subassembly, and the position stability of the fusion tube subassembly of operation in-process is good.
3. This but quick replacement's bushing type high-voltage fuse, the push rod can make the inner end cover relieved with the connected state of spacing dish through manpower inside promotion during the change, and the fusion tube subassembly no longer inserts the circuit, guarantees before taking out that the fusion tube is in the outage state, takes place the electric shock accident when preventing the workman from changing the fusion tube.
4. This but quick replacement's bushing type high-voltage fuse relies on device self structure can realize the fixed of fusion tube and demolish, need not the workman and wears the instrument, and bare-handed can accomplish the process of installing and removing, also can avoid the workman to climb the phenomenon of few area or the zone leakage instrument that appears when the high-tension line tower operation in the time of convenient operation, and the practicality is better.
Drawings
Fig. 1 is a schematic view of an overall structure of a bushing type high voltage fuse capable of being rapidly replaced according to the present invention;
fig. 2 is a schematic structural view of a fusing mechanism of a bushing type high-voltage fuse capable of being rapidly replaced according to the present invention;
fig. 3 is a schematic view of an inter-cylinder structure of a bushing type high-voltage fuse capable of being rapidly replaced according to the present invention;
FIG. 4 is a schematic side view of a fuse tube assembly of a quick replaceable bushing type high voltage fuse in accordance with the present invention;
fig. 5 is a schematic disassembled view of a fuse tube assembly of a bushing type high-voltage fuse capable of being rapidly replaced according to the present invention;
fig. 6 is a schematic structural view of a limiting disc of a bushing type high-voltage fuse capable of being replaced quickly according to the present invention;
fig. 7 is a schematic diagram of the positions of the snap-fit grooves of the bushing-type high-voltage fuse capable of being replaced quickly according to the present invention.
In the figure: 1. a porcelain piece; 2. an upper support; 3. an upper contact; 4. a fusing mechanism; 41. end sleeves; 42. an operating ring; 43. a connecting cylinder; 44. a cover plate; 45. butting piles; 46. an annular fuse holder; 461. buckling; 47. fusing a silk screen; 48. a fusion tube assembly; 481. a tension spring; 482. an inner push rod; 483. an arc-shaped inner pushing sheet; 484. a mounting frame; 485. a limiting disc; 4851. a butt joint groove; 4852. a clamping block; 486. a fusion tube outer cover; 487. a fusion tube; 488. an elastic rod; 489. end sleeves; 4891. butting piles; 4892. a card slot; 4893. a fastening groove; 5. a lower contact; 6. and a lower support.
Detailed Description
The technical scheme in the embodiment of the invention will be made clear below by combining the attached drawings in the embodiment of the invention; fully described, it is to be understood that the described embodiments are merely exemplary of some, but not all, embodiments of the invention and that all other embodiments, which can be derived by one of ordinary skill in the art based on the described embodiments without inventive faculty, are within the scope of the invention.
Referring to fig. 1, a bushing type high voltage fuse capable of being replaced quickly includes a porcelain 1, an upper support 2, an upper contact 3, fuse-link 4, lower contact 5 and undersetting 6, upper bracket 2 and undersetting 6 are installed respectively to the both ends of porcelain spare 1, contact 3 is installed to the bottom of upper bracket 2, upper contact 3 meets with fuse-link 4's one end, fuse-link 4's other end is fixed on lower contact 5, lower contact 5 is installed on the top surface of undersetting 6, realize being connected of this high-voltage fuse and circuit through the wiring structure that sets up on upper bracket 2 and the undersetting 6 during the use, fuse-link 4's upper and lower both ends are fixed respectively on upper contact 3 and lower contact 5, fuse-link 4 passes through contact structure and bearing structure fixed connection, avoid traditional detachable fuse probably to cause because of the poor stability drops and injures the workman incident, reduce the potential safety hazard of this high-voltage fuse in the operation by a wide margin.
Referring to fig. 2-3, the fusing mechanism 4 includes an outer end sleeve 41, an operating ring 42, a connecting cylinder 43, a cover plate 44, docking studs 45, ring-shaped fuse frames 46, fuse nets 47 and fuse tube assemblies 48, the docking studs 45 are fixed on the outer end surfaces of the outer end sleeve 41, the operating ring 42 is installed on the outer side walls of the two sets of outer end sleeves 41, the inner end surfaces of the two sets of outer end sleeves 41 are respectively and fixedly connected with the two ends of the connecting cylinder 43, the connecting cylinder 43 is connected with the cover plate 44 through hinges, the inner wall of the connecting cylinder 43 is attached to the outer walls of the two sets of ring-shaped fuse frames 46, the fuse nets 47 are installed between the two sets of ring-shaped fuse frames 46, the fuse nets 47 are located on the outer side of the fuse tube assemblies 48, the two ends of the fuse tube assemblies 48 are respectively and electrically connected with the two sets of docking studs 45 through wires, the two sets of docking studs 45 are respectively and fixedly connected with the upper and lower sets, buckle 461 and buckle groove 4893 joint, and fuse net 47 encircles the outside that sets up at fusion tube subassembly 48, and the cooperation sets up and links a section of thick bamboo 43 and carry out duplicate protection to fusion tube subassembly 48 between the fusion tube subassembly 48 outside, and the position stability of the fusion tube subassembly 48 of operation in-process is good.
Referring to fig. 4, the fuse tube assembly 48 includes a tension spring 481, an inner push rod 482, an arc inner push rod 483, a mounting frame 484, a limiting disc 485, a fuse tube outer cover 486, a fuse tube 487, an elastic rod 488 and an inner end sleeve 489, one end of the inner push rod 482 extends into the interior of the inter-connecting cylinder 43 to be movably connected with the arc inner push rod 483, the end of the inner push rod 482 is connected with the inner wall of the inter-connecting cylinder 43 through the tension spring 481, the inner wall of the arc inner push rod 483 is provided with a tooth structure, the arc inner push rod 483 is engaged with the tooth structure arranged on the outer wall of the limiting disc 485 through the tooth structure arranged on the inner wall, the limiting disc 485 is connected with one end of the inner end sleeve 489 through a screw thread, the inner end sleeve 489 is fixedly connected with the fuse tube outer cover 486 through the elastic rod 488, the fuse tube 487 is installed in the fuse tube outer cover, two inner end sleeves 489 are fixedly installed at both ends of the fuse tube outer cover 486, the fuse tube outer cover 489 is opened manually, the protection of the fusion tube assembly 48 is released, the inner pushing rod 482 is pushed inwards by manpower to drive the arc inner pushing sheet 483 to rotate, the tension spring 481 is in a stretching state, the arc inner pushing sheet 493 rotates to drive the limiting disc 485 to rotate synchronously, so that the inner end sleeve 489 connected with the limiting disc 485 through threads is screwed out, and the connection state of the inner end sleeve 489 and the limiting disc 485 is released.
Referring to fig. 5, the inner wall of the limiting disc 485 is provided with threads, the limiting disc 485 is fixedly connected with the mounting rack 484 through the threads arranged on the inner wall, the bottom of the mounting rack 484 is fixed on the inner wall of the inter-connecting cylinder 43, the outer end surface of the inner end sleeve 489 is provided with a threaded ring protruding outwards, the outer end surface of the inner end sleeve 489 is provided with a plurality of butt-joint piles 4891, each butt-joint pile 4891 is provided with a clamping groove 4892, and each clamping groove 4892 is clamped with a clamping block 4852.
Referring to fig. 6, a plurality of butt-joint grooves 4851 are formed on the limiting disc 485, the butt-joint grooves 4851 are configured as a groove structure with a left end notch diameter larger than a right end notch diameter, a latch 4852 is disposed on a groove wall of the butt-joint groove 4851, when the inner end sleeve 489 is screwed out, the butt-joint stub 4891 in the butt-joint groove 4851 slides from a small diameter side of the butt-joint groove 4851 to a large diameter side of the butt-joint groove 4851, the clamping state of the latch 4892 and the latch 4852 is released, the fusion tube assembly 48 is no longer connected to the circuit, after the limit of the groove wall of the butt-joint groove 4581 to the butt-joint stub 4891 is lost, the screwed-out two sets of the inner end sleeves 489 move in opposite directions under the action of the elastic rod 488, the fusion tube housing 486 hangs down in the interior of the inter-connection barrel 43 after the positions of the two ends are lost, a worker can easily take out the fusion tube housing 486 and can ensure that the fusion tube 487 is in a power-, the electric shock accident takes place when preventing the workman from changing fusion tube 487, and the process of installing and removing only relies on device self structure can realize the fixed of fusion tube 487 and demolish, need not the workman and wears the instrument, bare-handed can accomplish the process of installing and removing, also can avoid the workman to climb the phenomenon of few area or the zone leakage instrument that appears when the high-tension line tower operation in convenient operation, and the practicality is better.
Referring to fig. 7, the inner end surface of one group of inner terminal sleeves 489 is fixedly connected to one group of annular fuse holders 46, the other group of annular fuse holders 46 is clamped to the other group of inner terminal sleeves 489, the inner end surface of the inner terminal sleeve 489 clamped to the annular fuse holder 46 is provided with a fastening groove 4893, and the fastening groove 4893 is clamped to a fastening buckle 461 fixed to the annular fuse holder 46.
The working principle is as follows: when in use, the connection between the high-voltage fuse and a circuit is realized through the wiring structures arranged on the upper support 2 and the lower support 6, the upper end and the lower end of the fusing mechanism 4 are respectively fixed on the upper contact 3 and the lower contact 5, the fusing mechanism 4 is fixedly connected with the support structure through the contact structure, two groups of butt-joint piles 45 are respectively fixedly connected with the upper group of contact and the lower group of contact, the annular fuse frame 46 in an operating state is fixed on two groups of inner pipe sleeves 489, the buckles 461 are clamped with the buckle grooves 4893, the fuse wire net 47 is arranged around the outer side of the fuse pipe assembly 48 and is matched with the inter-connecting cylinder 43 arranged on the outer side of the fuse pipe assembly 48 to carry out double protection on the fuse pipe assembly 48, the cover plate 44 is opened through manpower during replacement, the annular fuse wire frame 46 is pushed to one side to enable the fuse wire net 47 to move to one side and pile up, the protection of the fuse pipe assembly 48 is released, the tension spring 481 is in a stretching state, the arc-shaped inner pushing piece 493 rotates to drive the limiting disc 485 to rotate synchronously, so that the inner end sleeve 489 connected with the limiting disc 485 through threads is screwed out, the connection state of the inner end sleeve 489 and the limiting disc 485 is released, the inner end sleeve 489 is screwed out, meanwhile, the butt joint piles 4891 in the butt joint grooves 4851 slide from the small-diameter side of the butt joint grooves 4851 to the large-diameter side of the butt joint grooves 4851, the clamping state of the clamping grooves 4892 and the clamping blocks 4852 is released, the fusion tube assembly 48 is not connected into a circuit any more, after the limit of the groove walls of the butt joint grooves 4581 to the butt joint piles 4891 is lost, the two groups of screwed-out inner end sleeves 489 move oppositely under the action of the elastic rods 488, the fusion tube outer cover 486 falls into the inter-connection barrel 43 after the positions of the two ends are limited, and a worker can easily take out the fusion tube outer cover 486 and the fusion tube 487 fused.
In conclusion, in the bushing type high-voltage fuse capable of being replaced quickly, the fusing mechanism 4 is fixedly connected with the support structure through the contact structure, the phenomenon that a worker is dropped and injured due to poor stability possibly caused by a traditional detachable fuse is avoided, the potential safety hazard of the high-voltage fuse in the operation process is greatly reduced, the fuse wire net 47 is arranged on the outer side of the fuse tube assembly 48 in a surrounding manner and is matched with the inter-connecting cylinder 43 arranged on the outer side of the fuse tube assembly 48 to carry out double protection on the fuse tube assembly 48, the position stability of the fuse tube assembly 48 in the operation process is good, the inner push rod is pushed inwards through manpower during replacement to drive the arc-shaped inner push sheet 483 to rotate, so that the connection state of the inner bushing 489 and the limiting disc 485 is released, the fuse tube assembly 48 is not connected into a circuit, the fuse tube outer cover 486 falls into the inter-connecting cylinder 43 after the positions of the fuse tube outer cover 486 are limited by two ends, a worker can take out the fuse tube outer, just can guarantee just before taking out that fusion tube 487 is in the outage state, take place the electric shock accident when preventing the workman from changing fusion tube 487, and the process of installing and removing only relies on device self structure can realize the fixed of fusion tube 487 and demolish, need not the workman and wears the instrument, bare-handed can accomplish the process of installing and removing, also can avoid the workman to climb the phenomenon of few area or the zone leakage instrument that appears when the high-tension line tower operation in convenient operation, and the practicality is better.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A bushing type high-voltage fuse capable of being replaced quickly is characterized by comprising a porcelain piece (1), an upper support (2), an upper contact (3), a fusing mechanism (4), a lower contact (5) and a lower support (6), wherein the upper support (2) and the lower support (6) are respectively installed at two ends of the porcelain piece (1), the upper contact (3) is installed at the bottom of the upper support (2), the upper contact (3) is connected with one end of the fusing mechanism (4), the other end of the fusing mechanism (4) is fixed on the lower contact (5), and the lower contact (5) is installed on the top surface of the lower support (6); the fusing mechanism (4) comprises an outer end sleeve (41), an operating ring (42), an inter-connecting cylinder (43), a cover plate (44), a butt-joint pile (45), an annular fuse frame (46), a fuse net (47) and a fuse tube assembly (48), butt-jointed piles (45) are fixed on the outer end faces of outer end sleeves (41), operation rings (42) are installed on the outer side walls of the two groups of outer end sleeves (41), the inner end faces of the two groups of outer end sleeves (41) are respectively fixedly connected with the two ends of a connecting cylinder (43) between the two groups of outer end sleeves, the connecting cylinder (43) is connected with a cover plate (44) through a hinge, the inner wall of the connecting cylinder (43) is attached to the outer walls of the two groups of annular fuse frames (46), fuse screens (47) are installed between the two groups of annular fuse frames (46), the fuse screens (47) are located on the outer sides of fuse tube assemblies (48), and the two ends of the fuse tube assemblies (48) are respectively electrically connected with the two groups of butt-jointed piles (45).
2. The bushing type high-voltage fuse as claimed in claim 1, wherein: the fusion tube component (48) comprises a tension spring (481), an inner push rod (482), an arc-shaped inner push sheet (483), a mounting frame (484), a limiting disc (485), a fusion tube outer cover (486), a fusion tube (487), an elastic rod (488) and an inner end sleeve (489), one end of the inner push rod (482) extends into the inner part of the connecting cylinder (43) and is movably connected with the arc-shaped inner push piece (483), the end part of the inner push rod (482) is connected with the inner wall of the connecting cylinder (43) through the tension spring (481), the inner wall of the arc-shaped inner push piece (483) is provided with a tooth structure, the arc-shaped inner push piece (483) is meshed with the tooth structure arranged on the outer wall of the limiting disc (485) through the tooth structure arranged on the inner wall, the limiting disc (485) is connected with one end of the inner end sleeve (489) through threads, the inner end sleeve (489) is fixedly connected with the fusion tube outer cover (486) through the elastic rod (488), and the fusion tube (487) is installed inside the fusion tube outer cover (486).
3. The bushing type high-voltage fuse as claimed in claim 2, wherein: the inner wall of the limiting disc (485) is provided with threads, the limiting disc (485) is fixedly connected with the mounting rack (484) through the threads arranged on the inner wall, and the bottom of the mounting rack (484) is fixed on the inner wall of the connecting cylinder (43).
4. The bushing type high-voltage fuse as claimed in claim 2, wherein: a plurality of butt joint grooves (4851) are formed in the limiting disc (485), the butt joint grooves (4851) are of groove body structures, the diameter of a groove opening at the left end is larger than that of a groove opening at the right end, and clamping blocks (4852) are arranged on groove walls of the butt joint grooves (4851).
5. The bushing type high-voltage fuse as claimed in claim 2, wherein: the outer end face of inner pot (489) is provided with the outwards outstanding screw ring, installs a plurality of butt joint stake (4891) on the outer end face of inner pot (489), has all seted up draw-in groove (4892) on every butt joint stake (4891), draw-in groove (4892) and fixture block (4852) block.
6. The bushing type high-voltage fuse as claimed in claim 2, wherein: two ends of the fuse tube outer cover (486) are fixedly provided with two groups of inner end sleeves (489), the inner side end faces of the inner end sleeves (489) are fixedly connected with one group of annular fuse frames (46), and the other group of annular fuse frames (46) are connected with the inner end sleeves (489) in another group in a clamping mode.
7. The bushing type high-voltage fuse as claimed in claim 2, wherein: and a clamping groove (4893) is formed in the end face of the inner side of the inner end sleeve (489) clamped with the annular fuse holder (46), and the clamping groove (4893) is clamped with a clamp (461) fixed on the annular fuse holder (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086119.5A CN112750673B (en) | 2021-01-22 | 2021-01-22 | But quick replacement's bushing type high-voltage fuse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110086119.5A CN112750673B (en) | 2021-01-22 | 2021-01-22 | But quick replacement's bushing type high-voltage fuse |
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| Publication Number | Publication Date |
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| CN112750673A true CN112750673A (en) | 2021-05-04 |
| CN112750673B CN112750673B (en) | 2022-09-20 |
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| CN202110086119.5A Active CN112750673B (en) | 2021-01-22 | 2021-01-22 | But quick replacement's bushing type high-voltage fuse |
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