CN108597973B - Electric drop-out fuse - Google Patents
Electric drop-out fuse Download PDFInfo
- Publication number
- CN108597973B CN108597973B CN201810888459.8A CN201810888459A CN108597973B CN 108597973 B CN108597973 B CN 108597973B CN 201810888459 A CN201810888459 A CN 201810888459A CN 108597973 B CN108597973 B CN 108597973B
- Authority
- CN
- China
- Prior art keywords
- push
- fuse
- columnar
- fuse tube
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000001012 protector Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
Landscapes
- Fuses (AREA)
Abstract
The invention relates to an electric drop-out fuse, one end of a fuse tube is electrically connected with a high-voltage terminal, the other end of the fuse tube is fixedly connected with a movable contact, a fixed seat is arranged below a high-voltage porcelain kettle, one end of a swing arm is fixedly connected with a swing frame, the swing frame and the fuse tube are both hinged on the fixed seat through a pin shaft, the swing frame is of a U-shaped structure, one side of the swing frame is provided with an integrally formed lug, the end part of the lug is hinged with one end of a push-pull rod, the other end of the push-pull rod is connected with a driving mechanism, the driving mechanism comprises a driving motor and a columnar toothed rod, and the columnar toothed rod is connected with the push-pull rod through a movable mechanism; the mounting plate is provided with an arc-extinguishing chamber, the moving contact is connected with a contact piece, and the end part of the contact piece is arranged in the arc-extinguishing chamber in a closed state. The electric drop-out fuse has reasonable and simple structural design, is coaxially arranged with a fuse tube through a swing arm, and adopts a columnar toothed bar as a driving mechanism, so that the overall stability of the fuse is enhanced; meanwhile, the arc extinguishing chamber is arranged, so that potential safety hazards are eliminated, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of high-voltage protection electrical appliances, in particular to an electric drop-out fuse.
Background
The fuse is an overcurrent protection electric appliance. The protector is widely applied to high-low voltage distribution systems, control systems and electric equipment and used as a protector for short circuit or overcurrent. When the current exceeds a specified value, the melt is fused by the heat generated by the current, and an electric appliance of the circuit is disconnected. The electric drop-out fuse is an outdoor high-voltage protector, is assembled on the high-voltage side of a distribution transformer or in a distribution line support rod circuit, is used as a short circuit, overload protection and switching coincidence current of the transformer and the circuit, is connected in series in a protected circuit, and when the circuit or equipment in the circuit is overloaded or fails, the fuse heats and melts, so that the circuit is cut off, and the purpose of protecting the circuit or the equipment is achieved.
The electric drop-out fuse mainly comprises a fuse tube, a porcelain insulator, a swing arm and a driving mechanism, and has the following problems:
1. the existing driving mechanism adopts a square frame annular rack, has a complex structure, is poor in stability during operation and is easy to loosen;
2. Meanwhile, the device has no arc extinguishing function and has potential safety hazard;
3. The rotation supporting points (the shaft I400 and the shaft II 500) of the existing fuse tube and the swing arm are independent and are not on the same axis, so that a stroke difference exists between the swing arm and the fuse tube when the fuse tube is opened and closed, in order to match the stroke difference, two L-shaped ears 100 are welded on the swing arm to be matched with the upper protrusion 200 of the fuse tube, a distance space 300 is arranged between the L-shaped ears 100 and the protrusion 200 for the movement stroke difference allowance when the fuse tube is opened and closed, and the structure connection between the swing arm and the fuse tube is complex.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides an electric drop-out fuse, and overcomes the defects.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides an electronic drop-out fuse, includes high-voltage porcelain kettle, fuse tube, push-and-pull rod, swing arm, fixed plate and mounting panel, high-voltage terminal is connected to fuse tube one end electricity, and the other end fixed connection moving contact, the high-voltage porcelain kettle below is equipped with the fixing base, the one end fixedly connected with of swing arm puts the frame, put the frame and the fuse tube and all be the two independent axles that set up on same axis and articulate respectively on the fixing base through the round pin axle, put the frame and be "U" type structure, its one side is equipped with integrated into one piece's lug, the one end of lug articulates the one end of push-and-pull rod, the other end of push-and-pull rod is connected with actuating mechanism, and actuating mechanism includes driving motor and column toothed bar, be connected through movable mechanism between column toothed bar and the push-and-pull rod; the mounting plate is provided with an arc-extinguishing chamber, the moving contact is connected with a contact piece, and the end part of the contact piece is arranged in the arc-extinguishing chamber when in a closed state.
The fuse tube is provided with a push-pull ring and a connecting block with an arc-shaped groove, the other end of the swing arm is provided with a hook, and the hook is hung in the push-pull ring.
The driving motor is connected with a gear meshed with the columnar toothed bar, the driving motor is arranged on the fixing piece, the columnar toothed bar is fixed on the surface of the fixing plate through two limit clamps, and the driving motor is fixed on the other surface of the fixing plate and drives the columnar toothed bar to move through the gear.
The movable mechanism comprises a fixed end provided with a spherical groove and a movable end with a sphere, and the fixed end and the movable end are connected with the push-pull rod and the columnar toothed rod through threads; the sphere is arranged in the spherical groove and can move freely, and the spherical groove wraps 2/3 to 4/5 of the surface area of the sphere.
The arc extinguishing chamber comprises two clamping pieces, the two clamping pieces are provided with outward folded edges, the clamping pieces are made of engineering plastic materials, and reinforcing ribs are arranged on the outer walls of the clamping pieces.
Due to the adoption of the technical scheme, the problems that the existing fuse is complex in structure, poor in stability and potential safety hazard are effectively solved, the electric drop-out fuse is reasonable and simple in structural design, and the overall stability of the fuse is enhanced by coaxially arranging the swing arm and the fuse tube and adopting the columnar toothed bar as the driving mechanism; meanwhile, the arc extinguishing chamber is arranged, so that potential safety hazards are eliminated, and the service life is prolonged.
Drawings
FIG. 1 is a schematic view of a fuse tube and a swing arm mounting structure in the background of the invention.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic view of a partial structure of the present invention.
Fig. 4 is a schematic structural view of the movable mechanism 10 in fig. 2.
Fig. 5 is a schematic view of the hook 43 in fig. 2.
Fig. 6 is a schematic view of the mounting structure of the swing arm 4 in fig. 2.
Fig. 7 is a schematic structural diagram of the connection block 8 and the swing arm 4 in fig. 6.
Fig. 8 is a schematic structural view of the swing arm 4 in fig. 3.
Fig. 9 is a left-side view of the swing arm 4.
Fig. 10 is a schematic structural diagram of the limit card 93 in fig. 2.
In the figure 1, a high-voltage porcelain pot; 2. a fuse tube; 21. pushing the pull ring; 3. a push-pull rod; 4. swing arms; 41. a frame is arranged; 42. a tab; 43. a hook; 5. a moving contact; 51. a pin shaft; 6. a fixing plate; 7. a fixing seat; 8. a connecting block; 81. an arc-shaped groove; 9. a driving mechanism; 91. a columnar toothed bar; 92. a gear; 93. a limit clamp; 10. a movable mechanism; 101. a fixed end; 102. a movable end; 11. a mounting plate; 12. an arc extinguishing cover; 121. folding edges; 13. and a contact.
Detailed Description
Referring to fig. 1 to 10, the present invention is as follows: the utility model provides an electronic drop-out fuse, includes high-voltage porcelain kettle 1, fuse tube 2, push-and-pull rod 3, swing arm 4, fixed plate 6 and mounting panel 11, high-voltage terminal is connected to fuse tube 2 one end electricity, and other end fixed connection moving contact 5, high-voltage porcelain kettle 1 below is equipped with fixing base 7, swing arm 4's one end fixedly connected with pendulum frame 41, pendulum frame 41 and fuse tube 2 all articulate respectively on fixing base 7 through round pin axle 51 or two independent axles that set up on same axis to eliminate the stroke difference, namely eliminate the distance space 300 in the fig. 1 at the in-process of opening and close. The swing frame 41 is of a U-shaped structure, one side of the swing frame is provided with an integrally formed lug 42, the end part of the lug 42 is hinged with one end of the push-pull rod 3, the other end of the push-pull rod 3 is connected with a driving mechanism 9, the driving mechanism comprises a driving motor and a columnar toothed rod 91, and the columnar toothed rod 91 is connected with the push-pull rod 3 through a movable mechanism 10; the arc extinguishing chamber 12 is installed on the mounting plate 11, the moving contact 5 is connected with the contact 13, and the tip of contact 13 is arranged in the arc extinguishing chamber 12 when closed state, contact 13 is slice L type setting, produces open fire when avoiding high pressure outage and does not damage moving contact or other parts, increase of service life, avoids the conflagration simultaneously, and the security is high.
Be equipped with on the fuse tube 2 and push away pull ring 21 and have the connecting block 8 of arc recess 81, the fuse tube 2 is cylindrical structure, and when the fuse tube 2 was closed, in arc recess 81 was arranged in to the fuse tube 2, swing arm 4 pushed away the fuse tube 2 through connecting block 6 and upwards moved, the other end of swing arm 4 is equipped with couple 43, couple 43 is hung and is put in push-pull ring 21, and when the fuse tube 2 disconnection, swing arm 4 is being pulled the fuse tube 2 through couple 43 and is rotated around 51 together with it to realize the disconnection.
The driving motor is connected with a gear 92 meshed with the columnar toothed bar 91, the driving motor is arranged on the fixing piece 6, the columnar toothed bar 91 is fixed on the surface of the fixing plate 6 through two limiting clamps 93, the driving motor is fixed on the other surface of the fixing plate 6, and the driving motor drives the columnar toothed bar 91 to move through the gear 92. Preferably, the driving motor can be connected with a remote control system, so that potential safety hazards caused by personnel approaching are avoided, and the device is practical and convenient.
The movable mechanism 10 comprises a fixed end 101 provided with a spherical groove and a movable end 102 with a sphere, wherein the fixed end 101 and the movable end 102 are connected with the push-pull rod 3 and the columnar toothed bar 91 through threads; the sphere is arranged in the spherical groove and can move freely, and the spherical groove wraps 2/3 to 4/5 of the surface area of the sphere. The ball body can freely move in the spherical groove, and the circumferential offset angle of the movable end 102 relative to the fixed end 101 is ensured to be within 25 degrees, so that when the ball body is driven, the columnar toothed bar 91 and the push-pull bar 3 are basically on the same straight line, the driving stroke is not influenced, the use is flexible on the premise of high overall stability, and the service life is prolonged
The arc-extinguishing chamber 12 includes two clamping pieces, all is equipped with outside hem 121 on the two clamping pieces, and the clamping piece selects engineering plastic material to make, and is equipped with the strengthening rib on the outer wall of clamping piece, and the strengthening rib plays the effect of strengthening arc-extinguishing chamber 12 stability, still has the radiating effect simultaneously, in time dispels the produced heat of arc extinction, increase of service life.
The operation principle is as follows: the driving motor drives the columnar toothed bar 91 so as to drive the push-pull rod 3, the push-pull rod 3 drives the fuse tube 2 to respectively rotate around the pin shaft 51 or two independent shafts arranged on the same axis through the hook 43, and meanwhile, the contact 13 is away from the arc extinguishing chamber 12 along with the fuse tube 2, so that the breaking operation of the fuse is realized; when the fuse needs to be closed, the motor drives the push-pull rod 3 to move in the direction close to the high-voltage porcelain kettle 1 through the columnar toothed bar 91, the push-pull rod 3 pushes the fuse tube 2 to rotate around the pin shaft 51 or two independent shafts arranged on the same axis respectively through the connecting block 8 until the movable contact 5 is combined with the fixed contact, and meanwhile, the contact 13 enters the arc extinguishing cover 12 from the folded edge 121, so that the closing operation of the fuse is realized.
The invention effectively improves the problems of complex structure, poor stability and potential safety hazard of the existing fuse, the electric drop-out fuse has reasonable and simple structural design, and the whole stability of the fuse is enhanced by coaxially arranging the swing arm 4 and the fuse tube 2 and adopting the columnar toothed bar 91 as the driving mechanism; and meanwhile, the arc extinguishing chamber 12 is arranged, so that potential safety hazards are eliminated, and the service life is prolonged.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (3)
1. The utility model provides an electronic drop-out fuse, includes high voltage porcelain kettle (1), fuse tube (2), push-and-pull rod (3), swing arm (4), fixed plate (6) and mounting panel (11), high voltage binding post is connected to fuse tube (2) one end electricity, fuse tube (2) other end fixed connection moving contact (5), its characterized in that: the high-voltage porcelain kettle is characterized in that a fixed seat (7) is arranged below the high-voltage porcelain kettle (1), one end of a swing arm (4) is fixedly connected with a swing frame (41), the swing frame (41) and a fuse tube (2) are respectively hinged to the fixed seat (7) through a pin shaft (51) or two independent shafts arranged on the same axis, the swing frame (41) is of a U-shaped structure, one side of the swing frame (41) is provided with an integrally formed lug (42), the end part of the lug (42) is hinged to one end of a push-pull rod (3), the other end of the push-pull rod (3) is connected with a driving mechanism (9), the driving mechanism comprises a driving motor and a columnar toothed rod (91), and the columnar toothed rod (91) is connected with the push-pull rod (3) through a movable mechanism (10); an arc-extinguishing cover (12) is arranged on the mounting plate (11), the moving contact (5) is connected with a contact piece (13), the contact piece (13) is arranged in a sheet-shaped L shape, and the end part of the contact piece (13) is arranged in the arc-extinguishing cover (12) in a closed state; the driving motor is connected with a gear (92) meshed with the columnar toothed bar (91), the driving motor is arranged on the fixed plate (6), the columnar toothed bar (91) is fixed on one surface of the fixed plate (6) through two limit clamps (93), the driving motor is fixed on the other surface of the fixed plate (6), and the driving motor drives the columnar toothed bar (91) to move through the gear (92); the movable mechanism (10) comprises a fixed end (101) provided with a spherical groove and a movable end (102) with a sphere, the fixed end (101) is connected with the push-pull rod (3) through threads, and the movable end (102) is connected with the columnar toothed rod (91) through threads; the ball body is arranged in the spherical groove and can freely move, the spherical groove wraps 2/3 to 4/5 of the surface area of the ball body, and the fusing tube (2) is of a cylindrical structure.
2. The electrical drop-out fuse of claim 1, wherein: the fuse tube (2) is provided with a push-pull ring (21) and a connecting block (8) with an arc-shaped groove (81), the other end of the swing arm (4) is provided with a hook (43), and the hook (43) is hung in the push-pull ring (21).
3. The electric drop-out fuse of claim 1, wherein the arc extinguishing chamber (12) comprises two clamping pieces, the two clamping pieces are provided with outward folded edges (121), the clamping pieces are made of engineering plastic materials, and the outer walls of the clamping pieces are provided with reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810888459.8A CN108597973B (en) | 2018-08-07 | 2018-08-07 | Electric drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810888459.8A CN108597973B (en) | 2018-08-07 | 2018-08-07 | Electric drop-out fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108597973A CN108597973A (en) | 2018-09-28 |
| CN108597973B true CN108597973B (en) | 2024-05-24 |
Family
ID=63623079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810888459.8A Active CN108597973B (en) | 2018-08-07 | 2018-08-07 | Electric drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108597973B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2070759A (en) * | 1934-09-15 | 1937-02-16 | Line Material Co | Drop-out fuse construction |
| US4326184A (en) * | 1980-08-04 | 1982-04-20 | Kearney-National Inc. | Electric cutout |
| CN2456308Y (en) * | 2000-12-29 | 2001-10-24 | 陈显志 | Wireless remote controlled and manual controlled fallen fuse |
| CN101354992A (en) * | 2008-09-11 | 2009-01-28 | 温州市自豪特种机电有限公司 | Remote-control straightgoing type falling fuse with lock |
| CN102737923A (en) * | 2012-07-09 | 2012-10-17 | 杨策 | Outdoor transverse control automatic dropping fuse protector |
| CN106356267A (en) * | 2016-11-15 | 2017-01-25 | 国家电网公司 | Falling type fuse |
| CN208637377U (en) * | 2018-08-07 | 2019-03-22 | 浙江冠丰达电力装备有限公司 | Electronic fuse switch |
-
2018
- 2018-08-07 CN CN201810888459.8A patent/CN108597973B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2070759A (en) * | 1934-09-15 | 1937-02-16 | Line Material Co | Drop-out fuse construction |
| US4326184A (en) * | 1980-08-04 | 1982-04-20 | Kearney-National Inc. | Electric cutout |
| CN2456308Y (en) * | 2000-12-29 | 2001-10-24 | 陈显志 | Wireless remote controlled and manual controlled fallen fuse |
| CN101354992A (en) * | 2008-09-11 | 2009-01-28 | 温州市自豪特种机电有限公司 | Remote-control straightgoing type falling fuse with lock |
| CN102737923A (en) * | 2012-07-09 | 2012-10-17 | 杨策 | Outdoor transverse control automatic dropping fuse protector |
| CN106356267A (en) * | 2016-11-15 | 2017-01-25 | 国家电网公司 | Falling type fuse |
| CN208637377U (en) * | 2018-08-07 | 2019-03-22 | 浙江冠丰达电力装备有限公司 | Electronic fuse switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108597973A (en) | 2018-09-28 |
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