CN105118753A - Drop fuse bar with adjustable length - Google Patents

Drop fuse bar with adjustable length Download PDF

Info

Publication number
CN105118753A
CN105118753A CN201510436409.2A CN201510436409A CN105118753A CN 105118753 A CN105118753 A CN 105118753A CN 201510436409 A CN201510436409 A CN 201510436409A CN 105118753 A CN105118753 A CN 105118753A
Authority
CN
China
Prior art keywords
rod
moving contact
bar
gathering sill
fall insurance
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.)
Pending
Application number
CN201510436409.2A
Other languages
Chinese (zh)
Inventor
张志勇
耿军立
潘虹
谷建水
刘新岗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Wuji Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Wuji Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd, Wuji Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201510436409.2A priority Critical patent/CN105118753A/en
Publication of CN105118753A publication Critical patent/CN105118753A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00Protective 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
    • H01H85/54Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers

Abstract

The invention relates to a drop fuse bar with an adjustable length. The drop fuse bar includes: a bar body, a moving contact arranged at the upper end of the bar body, and a stand arranged at the lower end of the bar body. The moving contact is movably connected to the upper end of the bar body. The drop fuse bar is simple in structure, convenient in use and good in fixing effect. The versatility of the drop fuse bar is increased, and the work efficiency of replacement is raised.

Description

Length adjustable fall insurance bar
Technical field
The present invention relates to electrician's electricity tool field of electric power system, the fall insurance bar that especially a kind of length can regulate.
Background technology
Being widely used in high and low voltage electric distribution system and control system and power consumption equipment at power supply field fall insurance, is apply the most general one of short circuit and over-current protection device.In low-voltage distribution system, fall insurance has been a kind of appliance switch of safeguard protection effect; fall insurance is widely used in electric network protection and power consumption equipment protection; when electrical network or power consumption equipment are short-circuited fault or overload; fall insurance can automatic shutdown circuit; avoid electric equipment to damage, Accident prevention spreads.
The fall insurance be mounted on 10kV or 35kV distribution line branch line the most frequently used at present, power failure range can be reduced, because it has an obvious cut-off point, possesses the function of isolating switch, create a safety work environment to maintenance section circuit and equipment, add the sense of security of maintainer.Be arranged on distribution transformer, can as the main protection of distribution transformer, so fall insurance obtains universal in 10kV or 35kV distribution line and distribution transformer.
The moving contact of the cartridge fuse upper end in fall insurance relies on fuse to fasten, and after moving contact being pushed " duckbilled " projection, fixed contact heads on moving contact, so cartridge fuse to be stuck in " duckbilled " securely inner.When short circuit current is by fuse, can produce electric arc during blown fuse, the vulcanized fiber tube of cartridge fuse liner produces a large amount of gas under arcing, and because cartridge fuse upper end is shut, gas sprays to lower end, blows out electric arc.Due to blown fuse, the moving contact of cartridge fuse loses the fastening force of fuse, and under the effect of cartridge fuse self gravitation and moving contact spring sheet, cartridge fuse falls rapidly, and circuit is disconnected, excision faulty section circuit or faulty equipment.
The bumper bar length of traditional fall insurance is fixing, the length of the bumper bar that is 10kV or 35kV distribution line used must match with circuit, fall insurance between each model circuit can not be general, as case of emergency, the fuse cutout that maintenance personal need be equipped with different model carries out keeping in repair or safeguarding, adds cost of labor.Therefore, need the fall insurance that a kind of bumper bar length can regulate, to meet the emergent demand of maintenance maintenance operation.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of length adjustable fall insurance bar, unadjustable with the bumper bar length solving existing fall insurance, problem that can not be mutually general between the fall insurance bar of different model.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Length adjustable fall insurance bar, comprise the body of rod, be arranged on the moving contact of body of rod upper end and be arranged on the deck of body of rod lower end, described moving contact is movably connected in the upper end of the body of rod.
The further improvement of technical solution of the present invention is: the circumference side of described body of rod upper end all arranges some gathering sills, described moving contact is connected on the upper end of the body of rod by annular moving contact base sheath, and described moving contact base arranges the set bolt corresponding with gathering sill.
The further improvement of technical solution of the present invention is: the quantity of described gathering sill is 2 ~ 4, and the bottom surface of described gathering sill is the semi-circumferential cambered surface of radius 1 ~ 3mm, and the length of described gathering sill is 10 ~ 100mm.
The further improvement of technical solution of the present invention is: the bottom surface of described gathering sill arranges the rubber spacer matched, and the thickness of rubber spacer is 0.2 ~ 0.5mm.
The further improvement of technical solution of the present invention is: the end of described set bolt is the hemisphere face matched with the bottom surface of gathering sill.
The further improvement of technical solution of the present invention is: the described body of rod arranges ruler, and the zero graduation line of described ruler is positioned at the lower end of the body of rod.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
Length adjustable fall insurance bar of the present invention, possesses length adjustment device, and structure is simple, and easy to use, good fixing effect, increases the versatility of fall insurance bar, improves and changes operating efficiency.
The present invention, by designing in the upper end of the body of rod and the connecting portion of moving contact, becomes active link from existing being fixedly connected with, and by the effect between gathering sill and set bolt, makes the position accurate positioning of moving contact on the body of rod, fixed.By designing cell body bottom surface, set bolt end, further enhancing fixed effect and insulation property, also can avoid being flexibly connected position and producing the problems such as wearing and tearing, distortion in the process of repeated disassembled and assembled, extending the pot life of the body of rod.By arranging ruler on the body of rod, being convenient in use accurately measure body of rod length, ensureing accuracy and the safety in utilization of body of rod length.
Of the present inventionly install and use more convenient, only need to carry out some special transformations to original bumper bar, expand the range of application of product.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is the cutaway view of body of rod upper end of the present invention;
Wherein, 1, the body of rod, 1-1, gathering sill, 1-2, rubber spacer, 1-3, ruler, 2, moving contact, 2-1, moving contact base, 2-2, set bolt, 3, deck.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
Length adjustable fall insurance bar of the present invention, comprises the body of rod 1, moving contact 2 and deck 3.Deck 3 is arranged on the lower end of the body of rod 1, and moving contact 2 is arranged on the upper end of the body of rod 1, and for being flexibly connected between moving contact 2 with the body of rod 1, concrete structure as shown in Figure 1 and Figure 2.
The body of rod 1 of the present invention is cylindrical, similar to the bumper bar of common fall insurance, deck 3 is fixedly connected with in the lower end of the body of rod 1, the circumference side of the body of rod 1 upper end is all arranged some gathering sill 1-1, moving contact 2 is socketed in the upper end of the body of rod 1 by annular moving contact base 2-1, and moving contact base 2-1 arranges the set bolt 2-2 corresponding with gathering sill 1-1.In order to ensure the surface not protruding from the body of rod 1 after moving contact base 2-1 is socketed in the upper end of the body of rod 1, by equal with the external diameter of the body of rod 1 for the design of the external diameter of moving contact base 2-1, the internal diameter of moving contact base 2-1 is greater than the internal diameter of the body of rod 1, first the external diameter of the end of the body of rod 1 is cut into equal with moving contact base 2-1 internal diameter before socket, then be socketed.The body of rod 1 is arranged ruler 1-3, the zero graduation line of ruler 1-3 is positioned at the lower end of the body of rod 1.
The quantity of gathering sill 1-1 is 2 ~ 4, and the bottom surface of gathering sill 1-1 is the semi-circumferential cambered surface of radius 1 ~ 3mm, and the length of gathering sill 1-1 is 10 ~ 100mm.The bottom surface of gathering sill 1-1 arranges the rubber spacer 1-2 matched, the thickness of rubber spacer 1-2 is 0.2 ~ 0.5mm, rubber spacer 1-2 selects the rubber of insulation, wear-resistant material, is padded in gathering sill 1-1 after rubber spacer 1-2 can being sat straight, and also adopts the method for original position coating to arrange rubber spacer 1-2.The end of set bolt 2-2 is the hemisphere face matched with the bottom surface of gathering sill 1-1.

Claims (6)

1. length adjustable fall insurance bar, comprises the body of rod (1), is arranged on the moving contact (2) of the body of rod (1) upper end and is arranged on the deck (3) of the body of rod (1) lower end, it is characterized in that: described moving contact (2) is movably connected in the upper end of the body of rod (1).
2. length adjustable fall insurance bar according to claim 1, it is characterized in that: the circumference side of the described body of rod (1) upper end all arranges some gathering sills (1-1), described moving contact (2) is socketed in the upper end of the body of rod (1) by annular moving contact base (2-1), and described moving contact base (2-1) is upper arranges the set bolt (2-2) corresponding with gathering sill (1-1).
3. length adjustable fall insurance bar according to claim 2, it is characterized in that: the quantity of described gathering sill (1-1) is 2 ~ 4, the bottom surface of described gathering sill (1-1) is the semi-circumferential cambered surface of radius 1 ~ 3mm, and the length of described gathering sill (1-1) is 10 ~ 100mm.
4. length adjustable fall insurance bar according to claim 3, is characterized in that: the bottom surface of described gathering sill (1-1) arranges the rubber spacer (1-2) matched, and the thickness of rubber spacer (1-2) is 0.2 ~ 0.5mm.
5. length adjustable fall insurance bar according to claim 3, is characterized in that: the end of described set bolt (2-2) is the hemisphere face matched with the bottom surface of gathering sill (1-1).
6. according to the length adjustable fall insurance bar described in claim 1 ~ 5, it is characterized in that: the described body of rod (1) is arranged ruler (1-3), the zero graduation line of described ruler (1-3) is positioned at the lower end of the body of rod (1).
CN201510436409.2A 2015-07-23 2015-07-23 Drop fuse bar with adjustable length Pending CN105118753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510436409.2A CN105118753A (en) 2015-07-23 2015-07-23 Drop fuse bar with adjustable length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510436409.2A CN105118753A (en) 2015-07-23 2015-07-23 Drop fuse bar with adjustable length

Publications (1)

Publication Number Publication Date
CN105118753A true CN105118753A (en) 2015-12-02

Family

ID=54666707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510436409.2A Pending CN105118753A (en) 2015-07-23 2015-07-23 Drop fuse bar with adjustable length

Country Status (1)

Country Link
CN (1) CN105118753A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017141A (en) * 2017-05-26 2017-08-04 国网辽宁省电力有限公司铁岭供电公司 Stretch general drop type cartridge fuse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200941369Y (en) * 2006-08-20 2007-08-29 闪金明 Adjusting falling fuse
CN201936756U (en) * 2010-12-09 2011-08-17 河南省电力公司许昌供电公司 Operating tool for air switch
CN202564162U (en) * 2012-03-30 2012-11-28 辽宁省电力有限公司朝阳供电公司 Drop type switch contact
CN202796824U (en) * 2012-08-17 2013-03-13 王斌 Drop-out fuse moving contact adjusting device
CN203179826U (en) * 2013-04-28 2013-09-04 国家电网公司 Adjustable fuse tube of drop-out fuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200941369Y (en) * 2006-08-20 2007-08-29 闪金明 Adjusting falling fuse
CN201936756U (en) * 2010-12-09 2011-08-17 河南省电力公司许昌供电公司 Operating tool for air switch
CN202564162U (en) * 2012-03-30 2012-11-28 辽宁省电力有限公司朝阳供电公司 Drop type switch contact
CN202796824U (en) * 2012-08-17 2013-03-13 王斌 Drop-out fuse moving contact adjusting device
CN203179826U (en) * 2013-04-28 2013-09-04 国家电网公司 Adjustable fuse tube of drop-out fuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107017141A (en) * 2017-05-26 2017-08-04 国网辽宁省电力有限公司铁岭供电公司 Stretch general drop type cartridge fuse

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Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20151202

RJ01 Rejection of invention patent application after publication