CN110581046B - High-voltage fuse - Google Patents
High-voltage fuse Download PDFInfo
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- CN110581046B CN110581046B CN201910917196.3A CN201910917196A CN110581046B CN 110581046 B CN110581046 B CN 110581046B CN 201910917196 A CN201910917196 A CN 201910917196A CN 110581046 B CN110581046 B CN 110581046B
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- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 10
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
Abstract
The invention provides a high-voltage fuse, which comprises a fuse body, a bottom baffle, a protective tube, a first elastic piece and a cover body, wherein the first elastic piece is abutted between the bottom baffle and the protective tube; and a second elastic element is arranged between the cover body and the fuse body, and the second elastic element is configured to be compressed when the cover body covers the opening and can drive the cover body to overturn to form opening of the through hole due to self elastic recovery when the clamping unit and the clamping unit are separated. The high-voltage fuse is convenient to replace the fuse tube.
Description
Technical Field
The invention relates to the technical field of high-voltage fuse structures, in particular to a high-voltage fuse.
Background
In an electric power system, a voltage transformer fuse can cause the fuse to be fused due to voltage fluctuation of the system, and at the moment, a fuse tube in the fuse needs to be replaced. But the fuse is located higher, for example a 35kV outdoor fuse is typically located 4-6 meters above ground. The fuse is replaced at the present stage by an insulating ladder with the height of more than 4 meters, the worker climbs to the height of 4-6 meters to replace the fuse, and the worker works high above the ground, so that potential safety hazards exist.
Disclosure of Invention
In view of the above, the present invention is directed to a high voltage fuse, which can conveniently replace a fuse tube.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a high-voltage fuse comprises a fuse body with a through hole and a cover body hinged on the fuse body, wherein a clamping unit is arranged on the cover body, a clamping unit is arranged on the fuse body, and the clamping unit is clamped and matched with the clamping unit; an unlocking unit connected with the clamping unit is arranged on the fuse body; and a second elastic piece is arranged between the cover body and the fuse body, is configured to be compressed when the cover body covers the opening, and can drive the cover body to turn over to form the opening of the through hole due to self elastic recovery when the clamping unit and the clamping unit are separated.
The safety tube is inserted into the through hole, and the first elastic piece is abutted between the bottom baffle and the safety tube; and a damping unit is fixedly arranged on the inner wall of the through hole, which is close to the top end of the through hole, and is a rubber pad fixedly arranged around the inner wall of the through hole.
Further, in fuse body, be close to the periphery of bottom one end on be constructed with the external screw thread, the end baffle is right including constituting the bottom plate of perforating hole shutoff, and by the ascending curb plate of the ascending extension in week side of bottom plate to and upwards extend, can insert by the middle part of bottom plate the erection column in the perforating hole, and in be constructed on the inner wall of curb plate with the internal thread that the external screw thread matches.
Furthermore, the first elastic part adopts a spring sleeved on the mounting column.
Furthermore, the clamping unit is an L-shaped clamping plate fixedly arranged on the cover body, and comprises an Contraband-shaped clamping plate and a third elastic piece, wherein the Contraband-shaped clamping plate is slidably arranged on the fuse body, and the third elastic piece is elastically abutted to the clamping plate; the clamping plate can bear external force and press downwards to push the clamping plate open, and the clamping plate can reset due to the driving of the third elastic piece so as to form blocking for the clamping plate to move upwards.
Furthermore, a cover body hinging part is formed on one side of the periphery of the fuse body close to the top of the fuse body, a cover body clamping part opposite to the cover body hinging part is formed on the periphery of the other side of the fuse body, and the clamping unit is arranged on the cover body clamping part in a sliding manner; the cover body clamping part is a clamping block protruding out of the fuse body, and a clamping groove is formed in the side wall of the clamping block.
Furthermore, a sliding block is arranged on the fuse body, the sliding block can bear external force to drive the unlocking part to move downwards, the unlocking part can push the clamping plate away due to downward movement, and the blocking of the clamping plate by the clamping plate can be released; the top surface of the sliding block and the bottom surface of the clamping block are arranged at intervals.
Further, the second elastic member is a torsion spring abutted between the cover body and the fuse body.
Furthermore, a partition plate capable of sliding in the through hole along the axial direction of the through hole in a guiding manner is arranged between the first elastic piece and the protective tube.
Furthermore, a through groove extending along the axial direction of the through hole is formed in the side wall penetrating through the through hole, a sliding block fixedly connected with the partition plate through a connecting piece penetrating through the through groove is arranged on the fuse body, a clamping groove is formed in one side, close to the bottom, of the through groove, the connecting piece can be driven by external force to be clamped into the clamping groove, and the compression state of the first elastic body is kept.
Compared with the prior art, the invention has the following advantages:
the replacing device of the fuse tube of the high-voltage fuse can conveniently unlock the cover body through the arrangement of the rod body and the unlocking assembly positioned on the rod body, can take out the fuse tube on the ground to replace the fuse tube, and can avoid potential safety hazards caused by high-altitude operation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of an explosion structure of a high-voltage fuse according to a first embodiment of the present invention;
FIG. 2 is an isometric view of a high voltage fuse in accordance with a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bottom baffle according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cover according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a structure of the clamping unit and the engaging unit according to a first embodiment of the present invention;
fig. 6 is an exploded view of a device for replacing a fuse tube of a high-voltage fuse according to a second embodiment of the present invention.
Description of reference numerals:
1-fuse body, 11-clamping unit, 12-unlocking unit, 13-cover hinging part, 14-cover clamping part, 15-sliding block mounting plate, 16-external thread, 17-third elastic element, 18-sliding block, 101-through hole, 102-groove, 103-clamping groove, 104-through groove and 105-clamping groove;
2-bottom baffle, 21-mounting column, 22-internal thread; 3-a protective tube; 4-a first elastic member;
5-cover body, 51-clamping unit, 52-cover body, 53-clamping block, 54-cover body mounting shaft and 55-clamping unit; 6-partition board, 61-extension rod; 7-a damping unit;
81-rod body, 811-outer tube body, 8111-reinforcing block, 812-inner tube body, 82-unlocking component, 821-unlocking plate, 822-driving lever, 823-enclasping plate, 824-damping shaft, 83-safety tube clamping unit, 831-clamping plate, 832-guide plate, 84-locking component, 841-screw rod and 842-handle rod.
Detailed Description
It should be noted that the embodiments and features of the embodiments 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.
The present embodiment relates to a high-voltage fuse, as shown in fig. 1, the high-voltage fuse includes a fuse body 1 having a through hole 101, a bottom baffle 2 capable of blocking the bottom of the through hole 101, a fuse tube 3 inserted into the through hole 101, a first elastic member 4 abutting between the bottom baffle 2 and the fuse tube 3, and a cover 5 hinged to the fuse body 1, wherein the cover 5 is capable of opening and closing the top of the through hole 101 by turning over relative to the fuse body 1; the cover body 5 is provided with a clamping unit 51, the fuse body 1 is provided with a clamping unit 11, and the cover body 5 can keep shielding the through hole 101 due to the clamping matching of the clamping unit 51 and the clamping unit 11; an unlocking unit 12 connected with the clamping unit 11 is arranged on the fuse body 1, and the unlocking unit 12 is configured to bear external unlocking operation to drive the clamping unit 11 to be separated from the clamping unit 51; and a second elastic member is disposed between the cover 5 and the fuse body 1, and the second elastic member is configured to be compressed when the cover 5 closes the through hole 101, and to drive the cover 5 to turn over due to its elastic recovery when the engaging unit 11 and the engaging unit 51 are disengaged, so as to open the through hole 101.
In the present embodiment, referring to fig. 1, the fuse body 1 is in a circular tube shape, the through hole 101 of the fuse body 1 is formed by an inner hole thereof, the lid hinge portion 13 is formed on one side of the outer periphery of the fuse body 1 near the top portion thereof, the lid engaging portion 14 opposite to the lid hinge portion 13 is formed on the outer periphery of the other side of the fuse body 1, and the engaging unit 11 is specifically slidably provided on the lid engaging portion 14.
Specifically, as shown in fig. 1 and 2, the cover hinge 13 is a hinge block protruding out of the fuse body 1, a concave groove 102 is formed on the top surface of the hinge block, and hinge holes are formed on two opposite side walls of the groove 102; the cover body engaging portion 14 is an engaging block protruding outward from the fuse body 1, and a locking groove 103 is formed on a side wall of the engaging block; the fuse body 1 is further provided with a slider mounting plate 15 located below the engaging block and connected to the engaging block, the slider mounting plate 15 is provided below the engaging block, a through groove 104 communicating with the through hole 101 is provided through the slider mounting plate 15 and a side wall of the fuse body 1, the through groove 104 extends in an axial direction of the through hole 101, a top of the through groove 104 is provided at a distance from a bottom surface of the engaging block, and a locking groove 105 communicating with the through groove 104 is formed on a side of the through groove 104 near the bottom.
In this embodiment, an external thread 16 is formed on the outer periphery of the fuse body 1 near one end of the bottom, and the bottom baffle 2 has a structure as shown in fig. 3, and specifically includes a bottom plate, a side plate extending upward from the peripheral side of the bottom plate, and a mounting post 21 extending upward from the middle of the bottom plate; and the inner wall of the side plate is provided with an internal thread 22 which can form a screwed fit with the external thread 16 on the periphery of the fuse body 1, the diameter of the mounting column 21 is set to be smaller than that of the through hole 101, and when the side plate is screwed with the periphery of the fuse body 1, the mounting hole can be inserted into the through hole 101 for mounting the first elastic member 4 described below.
Through setting up baffle 2 at the bottom into above-mentioned structure, baffle 2 at the bottom of the rotatory bottom of accessible is adjusted for fuse body 1's position, also can adjust the length that the erection column 21 stretched into perforating hole 101 to the elastic force that the first elastic component 4 of adjustment that can be convenient was applyed to protective tube 3 guarantees the current transmission of protective tube 3, makes this high-voltage fuse have better result of use. In this embodiment, the first elastic element 4 is specifically a spring sleeved on the safety post and abutted between the bottom plate and the safety tube 3.
The fuse tube 3 may adopt a fuse tube of the prior art, one end of the fuse tube 3 is electrically connected to the bottom baffle 2, the other end of the fuse tube 3 is electrically connected to the cover 5, and the bottom baffle 2 is electrically connected to the cover 5, for example, one end of the fuse tube 3 may be electrically connected to the bottom baffle 2 through the first elastic member 4, the other end of the fuse tube 3 may be electrically connected to the cover 5 by abutting against the cover 5 due to an elastic force applied by the first elastic member 4, and the bottom baffle 2 and the cover 5 are respectively provided with a connecting terminal capable of accessing a circuit, so that the fuse provides a protection function for the circuit.
The structure of the cover 5 can be seen from fig. 1, fig. 2 and fig. 4, and includes a cover body 52 in a circular plate shape, a latch 53 configured to be latched in the groove 102 is configured on one side of the circumference of the cover body 52, the latch 53 is sleeved on a cover mounting shaft 54 fixedly inserted in the hinge hole, the latch 53 can rotate around the cover mounting shaft 54, so that the cover 5 can be turned over relative to the fuse body 1, the second elastic member is specifically a torsion spring sleeved on the cover mounting shaft 54 and having two ends respectively abutting against the fuse body 1 and the cover 5, and the second elastic member is not shown in the drawing of this embodiment. When the following latch unit 51 and the following latch unit 11 are in latching engagement to make the cover body 5 block the through hole 101, the second elastic member is in a compressed state, and when the following latch unit 51 and the following latch unit 11 are disengaged, the second elastic member can drive the cover body 5 to turn over due to the elastic recovery of the second elastic member, for example, turn over by 90 ° or more, so that the through hole 101 can be automatically opened to facilitate the removal of the safety tube 3.
Referring to fig. 4 and 5, the latch unit 51 is fixed to the other peripheral side of the cover body 52, relative to the latch 53, in this embodiment, the latch unit 51 is a latch plate extending downward and having an L shape, and an inclined surface is formed on one side of the bottom surface of the bottom edge of the latch plate, the engaging unit 11 is specifically an engaging plate in the shape of Contraband slidably disposed in the slot 103, a third elastic member 17 is disposed between the engaging plate and the bottom surface of the engaging groove 103, and when the cover 5 described below is engaged downward, the inclined surface of the engaging plate contacts the engaging plate, so as to extrude the top plate of the clamping plate and compress the third elastic element 17, after the clamping plate moves over the top plate, the engaging plate can be driven by the third elastic element 17 to return, which constitutes a stop for the upward movement of the engaging plate, thereby keeping the cover 5 in a state of shielding the through hole 101. The third elastic member 17 may be, for example, a spring that is in contact with the bottom surface of the card slot 103 and the inside of the mounting hole of the engaging plate, or an elastic piece that is in contact with the bottom surface of the card slot 103 and the engaging plate.
In order to facilitate the operation of fastening the cover body 5 by an operator, in this embodiment, a pull ring is further configured on the cover body 52, which is not shown in the drawings of this embodiment, the pull ring is preferably disposed close to the fastening plate, when the operator fastens the cover body 5 on the ground, the pull ring can be pulled by using the pull hook of the rod 81, the fastening unit 11 and the fastening unit 51 can be automatically fastened to complete the fastening of the cover body 5, and no high-altitude operation is required, so that the potential safety hazard can be reduced.
The unlocking unit 12 is shown in fig. 1 and 5, and includes an unlocking portion and a sliding block 18 fixedly connected to the unlocking portion and capable of sliding on the fuse body 1 in a guiding manner, the sliding block 18 can be driven by an external force to move down and can drive the unlocking portion to move down, a surface of the unlocking portion facing the engaging unit 11 is configured to include two profiles which are connected and respectively inclined with respect to a bottom plate of the engaging plate, so that the unlocking portion can respectively press the bottom plate of the engaging plate when moving down and push the engaging plate open, so that blocking of the engaging plate by the engaging plate can be released, and the bottom plate of the engaging plate can be pushed open when moving up and reset. The pushing of the unlocking portion to the engaging plate and the pushing of the engaging plate by the engaging plate have the same principle, and are not described herein again.
In this embodiment, the sliding block 18 is slidably disposed on the fuse body 1, so that the movement of the sliding block 18 can drive the unlocking portion to move, so as to disengage the engaging unit 11 and the engaging unit 51, and an elastic member is disposed between the sliding block 18 and the fuse body 1, so as to drive the sliding block 18 to reset, and the elastic member can be disposed separately. The space constitutes a positioning unit for positioning the device for replacing the fuse tube of the high-voltage fuse in the second embodiment on the fuse body 1, and the operator can open the cover 5 and take out the fuse tube 3 in a labor-saving manner by the positioning unit.
One structure of the sliding block 18 that can be driven by the first elastic element 4 is shown in fig. 1, a partition plate 6 that can slide on the inner wall of the through hole 101 along the axial direction of the through hole 101 is further disposed between the first elastic element 4 and the fuse tube 3, the partition plate 6 has an extending rod 61 that extends out of the through hole 104 and is fixedly connected to the sliding block 18, so that the partition plate 6 and the sliding block 18 can move synchronously, the partition plate 6 is disposed to conveniently unlock the lid 5, and when the sliding block 18 moves downwards and the partition plate 6 moves downwards and compresses the first elastic element 4, when the extending rod 61 moves downwards along with the sliding block 18 to face the engaging groove 105, the sliding block 18 can be shifted by external force to allow the extending rod 61 to be engaged into the engaging groove 105, so that the first elastic element 4 can be kept in a compressed state, so as to facilitate the insertion of the fuse tube 3 into the through hole 101. Obviously, the sliding block 18 can be provided separately from the partition 6, i.e. a fourth elastic element is provided to drive the sliding block 18 separately, and a sliding block connected to the partition 6 is provided separately, which still can achieve the above-mentioned functions, but the cost is high and the operation is troublesome.
In order to avoid the danger that the safety tube 3 is ejected from the through hole 101 by the pushing of the first elastic member 4 after the cover 5 is opened, and the danger that the safety tube 3 may fall from high altitude, the safety tube 3 may be injured by people, in the present embodiment, a damping unit 7 is fixedly arranged on an inner wall of the through hole 101 close to the top of the through hole 101, and the damping unit 7 is configured to apply a damping force to the safety tube 3 pushed out by the first elastic member 4 by the opening of the cover 5, so that the safety tube 3 is maintained to be partially ejected out of the through hole 101. By providing the damper unit 7, the fuse tube 3 can be kept partially ejected out of the through hole 101, and the fuse tube 3 can be easily taken out while avoiding injury to a person. In this embodiment, the damping unit 7 is specifically a rubber pad fixedly provided on the inner wall of the ring through hole 101.
In summary, in the high-voltage fuse of the present embodiment, the cover 5 can be automatically opened during unlocking, the fuse tube 3 can be partially ejected out of the through hole 101 after the cover 5 is unlocked, and the unlocking operation of the cover 5 and the removing or replacing operation of the fuse tube 3 can be completed by a worker on the ground, so that overhead operation is reduced, and potential safety hazards are reduced.
Example two
The embodiment relates to a device for replacing a fuse tube of a high-voltage fuse, which is used for replacing the fuse tube 3 of the high-voltage fuse in the high altitude on the ground so as to reduce the overhead operation of workers and reduce potential safety hazards. The replacing device of the fuse tube of the high-voltage fuse, hereinafter referred to as replacing device, as shown in fig. 6, specifically includes a rod 81, an unlocking assembly 82 hinged to the rod 81 and capable of unlocking the unlocking unit 12 according to the first embodiment, and a fuse tube clamping unit 83 fixed to the rod 81.
In the overall structure, the rod 81 specifically includes an outer tube 811 and an inner tube 812 penetrating through the outer tube 811, the unlocking assembly 82 is specifically hinged to the outer tube 811, and the safety tube clamping unit 83 is specifically fixed to a section of the inner tube 812 higher than the outer tube 811.
In this embodiment, a locking assembly 84 is further disposed between the outer tube 811 and the inner tube 812, and the locking assembly 84 can lock or unlock the inner tube 812 from moving axially relative to the outer tube 811, so as to lock the relative movement between the outer tube 811 and the inner tube 812 before the rod 81 is positioned on the fuse body 1, thereby facilitating the positioning operation of an operator; and after the rod body 81 is positioned on the fuse body 1, the relative motion between the outer tube body 811 and the inner tube body 812 is unlocked, so that the operation of clamping the fuse tube 3 and the like is conveniently carried out by an operator.
As shown in fig. 6, a preferred structure of the locking assembly 84 is that a reinforcing block 8111 is formed on the outer periphery of one end of the outer tube 811 near the bottom, the locking assembly 84 specifically includes a threaded hole formed through the side walls of the reinforcing block 8111 and the outer tube 811 and communicating with the inner hole of the outer tube 811, a screw 841 inserted into the threaded hole, and a handle lever 842 fixed to one end of the outer portion of the threaded hole, and the screw 841 is rotated by the handle lever 842 to abut against the inner tube 812 or release the inner tube 812, thereby locking or unlocking the inner tube 812 relative to the outer tube 811. Obviously, the locking assembly 84 can also refer to a rotating locking structure of an existing telescopic rod, but the preferred scheme of the embodiment is labor-saving, and the unlocking operation is performed when an operator holds the telescopic rod with one hand.
The unlocking assembly 82 specifically includes an unlocking plate 821 hinged to the rod 81, a driving lever 822 extending downward from two sides of the unlocking plate 821, and a holding plate 823 capable of holding the fuse body. For the convenience of operation, the unlocking plate 821 is preferably hinged to the rod 81 by a damping shaft 824, which may be an existing mature product and will not be described herein. Wherein the unlocking plate 821 is configured to be sandwiched between the engaging block and the slide block 18.
The fuse tube clamping unit 83 includes two semicircular clamping plates 831 arranged oppositely and capable of enclosing into a circle, and a gap through which the fuse tube 3 can penetrate along the radial direction of the fuse tube 3 is formed on one side of each clamping plate 831 away from the rod body 81. In addition, two guide plates 832 extending outwards are respectively configured on one side of the two clamping plates 831 far away from the body, and the two guide plates 832 of the two clamping plates 831 can be clamped into a V shape, in this embodiment, the two clamping plates 831 are configured to have an adjustable distance so as to adjust the clamping force of the protective tube 3, specifically, a threaded hole is formed on a mounting plate of the clamping plate 831 fixedly arranged on the inner body 812, a long strip-shaped through hole is formed on a butt surface of the two clamping plates 831 in butt joint with the mounting plate of the clamping plate 831, the fixing of the clamping plate 831 and the mounting plate of the clamping plate 831 is formed in a manner that a bolt penetrates through the through hole and is in threaded connection with the threaded hole, and the position of the clamping plate 831 relative to the mounting plate of the clamping plate 831 can be adjusted through the adjustment of the bolt in the long strip-shaped through hole.
Based on above-mentioned structure, when the protective tube 3 of high-pressure fuse in the high altitude damaged, need change, the change device use of this embodiment is as follows:
firstly, the unlocking plate 821 of the replacing device is positioned between the clamping block and the sliding block 18 of the high-voltage fuse by an operator, at the moment, the rod body 81 is pulled downwards to unlock the cover body 5, the fuse tube 3 can be partially popped out automatically, after the fuse tube 3 is popped out, the operator pulls down the sliding block 18 again, and the sliding block is shifted by the shifting rod 822 on one side of the unlocking plate 821 to clamp the insertion part of the sliding block 18 into the clamping groove 103.
In the second step, the worker operates the unlocking assembly 82 to unlock the inner tube 812, and the fuse 3 is clamped into the fuse clamping unit 83 by the axial movement of the inner tube 812 and the rotation relative to the unlocking assembly 82 and the guidance of the two clamping plates 831, so that the worker takes out the old fuse 3.
Thirdly, the worker clamps the new safety tube 3 in the safety tube clamping unit 83, positions the unlocking plate 821 below the engaging block again, puts the new safety tube 3 in the through hole 101 by moving or rotating the inner rod 81 in the axial direction, and pulls out the insertion portion from the engaging groove 103.
And a fourth part, wherein the cover body 5 is buckled on the fuse body 1 by adopting a hanging rod with a hook to complete the replacement of the fuse tube 3, obviously, the hook can also be arranged on the replacement device.
In conclusion, the replacing device of the high-voltage fuse protective tube of the embodiment is simple to operate, and labor is saved in operation due to the fact that the replacing device can be arranged on the high-voltage fuse in a positioning mode.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A high-voltage fuse comprising a fuse body (1) having a through hole (101) and a lid (5) hinged to the fuse body (1), characterized in that: a clamping unit (51) is arranged on the cover body (5), a clamping unit (11) is arranged on the fuse body (1), and the clamping unit (51) is in clamping fit with the clamping unit (11); an unlocking unit (12) connected with the clamping unit (11) is arranged on the fuse body (1); a second elastic element is arranged between the cover body (5) and the fuse body (1), and the second elastic element is configured to be compressed when the cover body (5) closes the through hole (101), and can drive the cover body (5) to turn over due to self elastic recovery when the clamping unit (11) and the clamping unit (51) are separated so as to open the through hole (101); the clamping unit (51) is an L-shaped clamping plate fixedly arranged on the cover body (5), and the clamping unit (11) comprises an Contraband-shaped clamping plate arranged on the fuse body (1) in a sliding manner and a third elastic piece (17) elastically abutted against the clamping plate; the clamping plate can bear external force and press downwards to push the clamping plate open, and the clamping plate can reset due to the driving of the third elastic piece (17) to form blocking of the clamping plate moving upwards.
2. The high voltage fuse of claim 1, wherein: the safety protection device also comprises a bottom baffle (2) capable of plugging the bottom of the through hole (101), a safety tube (3) inserted into the through hole (101), and a first elastic piece (4) abutted between the bottom baffle (2) and the safety tube (3); and a damping unit (7) is fixedly arranged on the inner wall of the top end of the through hole (101), and the damping unit (7) is a rubber pad fixedly arranged on the inner wall of the through hole (101).
3. The high voltage fuse of claim 2, wherein: external screw thread (16) are constructed on the periphery of fuse body (1) bottom, end baffle (2) including constitute right the bottom plate of perforating hole (101) shutoff, and by the ascending curb plate of extension in week side of bottom plate, and by the middle part of bottom plate upwards extend, can insert erection column (21) in perforating hole (101), and in be constructed on the inner wall of curb plate with the internal thread that external screw thread (16) match.
4. A high-voltage fuse according to claim 3, characterized in that: the first elastic piece (4) adopts a spring sleeved on the mounting column (21).
5. The high-voltage fuse according to any one of claims 2 to 4, characterized in that: a cover body hinging part (13) is formed on one side of the fuse body (1) close to the periphery of the top of the fuse body, a cover body clamping part (14) opposite to the cover body hinging part (13) is formed on the periphery of the other side of the fuse body (1), and the clamping unit (11) is arranged on the cover body clamping part (14) in a sliding way; the cover body clamping part (14) is a clamping block protruding out of the fuse body (1), and a clamping groove (103) is formed in the side wall of the clamping block.
6. The high voltage fuse of claim 5, wherein: the unlocking unit (12) comprises an unlocking part and a sliding block (18) which is fixedly connected with the unlocking part and can slide on the fuse body 1 in a guiding way; the sliding block (18) can bear external force to drive the unlocking part to move downwards, and the unlocking part can push the clamping plate away due to the downward movement so as to release the blocking of the clamping plate by the clamping plate; the top surface of the sliding block (18) and the bottom surface of the clamping block are arranged at intervals.
7. The high voltage fuse of claim 1, wherein: the second elastic piece is a torsion spring which is abutted between the cover body (5) and the fuse body (1).
8. The high voltage fuse of claim 5, wherein: a partition plate (6) which can slide in the through hole (101) along the axial direction of the through hole (101) in a guiding manner is arranged between the first elastic piece (4) and the protective tube (3).
9. The high voltage fuse of claim 8, wherein: run through the lateral wall of perforating hole (101) is seted up along axial extension's of perforating hole (101) through groove (104), in be equipped with on fuse body (1) through pass through the connecting piece of through groove (104) with the slider that baffle (6) linked firmly, and in one side that through groove (104) is close to the bottom is constructed has joint groove (105), the connecting piece can be driven by external force and is gone into in the draw-in groove (103), and keeps the compression state of first elastic component (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917196.3A CN110581046B (en) | 2019-09-26 | 2019-09-26 | High-voltage fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917196.3A CN110581046B (en) | 2019-09-26 | 2019-09-26 | High-voltage fuse |
Publications (2)
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| CN110581046A CN110581046A (en) | 2019-12-17 |
| CN110581046B true CN110581046B (en) | 2021-09-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2198439A1 (en) * | 2007-09-11 | 2010-06-23 | Wöhner GmbH & Co. KG Elektrotechnische Systeme | Load interrupter |
| CN205670529U (en) * | 2016-06-14 | 2016-11-02 | 河南莱源电气有限公司 | A kind of high-tension fuse being conveniently replaceable melt |
| CN206761276U (en) * | 2016-12-05 | 2017-12-19 | 陈玉水 | A kind of singlehanded easy water boiling cup |
| CN207124174U (en) * | 2017-07-07 | 2018-03-20 | 管炜 | A kind of fuse link |
| CN207966824U (en) * | 2018-01-26 | 2018-10-12 | 唐恩(厦门)电气有限公司 | A kind of low voltage fuse type isolating switch |
| CN208596651U (en) * | 2018-09-03 | 2019-03-12 | 西安五环特种熔断器有限公司 | A kind of fuse assembly being convenient for changing part |
-
2019
- 2019-09-26 CN CN201910917196.3A patent/CN110581046B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2198439A1 (en) * | 2007-09-11 | 2010-06-23 | Wöhner GmbH & Co. KG Elektrotechnische Systeme | Load interrupter |
| CN205670529U (en) * | 2016-06-14 | 2016-11-02 | 河南莱源电气有限公司 | A kind of high-tension fuse being conveniently replaceable melt |
| CN206761276U (en) * | 2016-12-05 | 2017-12-19 | 陈玉水 | A kind of singlehanded easy water boiling cup |
| CN207124174U (en) * | 2017-07-07 | 2018-03-20 | 管炜 | A kind of fuse link |
| CN207966824U (en) * | 2018-01-26 | 2018-10-12 | 唐恩(厦门)电气有限公司 | A kind of low voltage fuse type isolating switch |
| CN208596651U (en) * | 2018-09-03 | 2019-03-12 | 西安五环特种熔断器有限公司 | A kind of fuse assembly being convenient for changing part |
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| Publication number | Publication date |
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| CN110581046A (en) | 2019-12-17 |
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