CN102198478A - Special hydraulic insulated shearing tool for relay protection small bus - Google Patents
Special hydraulic insulated shearing tool for relay protection small bus Download PDFInfo
- Publication number
- CN102198478A CN102198478A CN 201010133223 CN201010133223A CN102198478A CN 102198478 A CN102198478 A CN 102198478A CN 201010133223 CN201010133223 CN 201010133223 CN 201010133223 A CN201010133223 A CN 201010133223A CN 102198478 A CN102198478 A CN 102198478A
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- piston rod
- spring reset
- relay protection
- hydraulic cylinder
- hydraulic
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Abstract
The invention belongs to the technical field of shearing of relay protection small buses, and discloses a special hydraulic insulated shearing tool for a relay protection small bus. The shearing tool comprises a groove-shaped bottom plate provided with a lateral hole, the groove-shaped bottom plate is fastened and connected with a unidirectional acting spring reset hydraulic cylinder, the end of a piston rod of the unidirectional acting spring reset hydraulic cylinder passes through the lateral hole, the end of the piston rod is fastened and connected with a cutter head, the end of the unidirectional acting spring reset hydraulic cylinder is fastened and connected with a fixed handle and movably connected with a hydraulic handle through at least two pivots, wherein one pivot is movably connected with a plunger piston, and the plunger piston is positioned in the unidirectional acting spring reset hydraulic cylinder; and except the cutter head, the whole exterior of the shearing tool is provided with an insulated layer. The shearing tool is simple in principle, convenient to manufacture, small in volume, light in weight, safe and convenient to carry and use, high in shearing speed and efficient, saves the time, has low cost, and is convenient to popularize and use.
Description
Technical field
The invention belongs to the shearing technique field of the little bus of relay protection, particularly the little bus dedicated hydraulic of a kind of relay protection insulation cutter cutting tool.
Background technology
The Eleventh Five-Year Plan period; one of important content that State Grid Corporation of China transforms " changing electrical secondary system equipment such as relay protection backward in technique, as to have significant deficiency, stabilization control device " as electric power network technique, power system relay protection device technological transformation upgrading task is very heavy.In relay protection replacing process, often need the charged little bus of alternating current-direct current that links to each other between protection screen of cutting off.The little bus of relay protection alternating current-direct current provides PT alternating voltage, power of alterating and direct current for protective relaying device; The copper rods that adopt diameter 8MM more, interrod spacing 2CM, two-layer up and down, interlamellar spacing 4CM, each little bus in relay-set screen top generally has 15～30.Domestic just at the little bus of operating relay protection, though a plurality of manufacturer production are arranged, all adopt the terminal and the hard copper rod of naked dew, there is not big variation decades.When the staff sheared little bus, owing to there is not special-purpose little bus cutting implement now, universal grip pliers was sheared.Need many people to cooperate meticulously when shearing little bus, a people stands in and takes clamp to be responsible for shearing on the Insulation ladder, and a people stands in and takes the adjacent little bus of felt pad pad on the ladder, and a personal responsibility instrument transmits.Although the staff is very conscientious, careful, careful; but because the cable clamp are bigger; there is not insulation processing; spacing is very little between little bus rod; often occur between little bus rod, layer short circuit; power of alterating and direct current or PT alternating voltage fuse melting make protective device lose dc source and gather less than the PT alternating voltage.Change in the insurance process the operations staff,, jeopardize the safe and stable operation of power system if power failure will cause the tripping or the malfunction of protective device.So, the cutting method of present little bus and cutting implement, time-consuming, effort, shearing area is very irregular, and operating personnel have Danger Electric shock risk, also cause the malfunction of relay protection easily.
Summary of the invention
For overcoming problems of the prior art, the object of the present invention is to provide the little bus dedicated hydraulic of a kind of relay protection insulation cutter cutting tool.
For achieving the above object, the present invention has taked following technical scheme:
The little bus dedicated hydraulic of relay protection insulation cutter cutting tool: comprise the grooved base plate that is provided with lateral aperture; the grooved base plate is fastenedly connected with single effect spring reset hydraulic cylinder; the piston rod end of single effect spring reset hydraulic cylinder is located in the lateral aperture; the piston rod end is fastenedly connected with cutter head; single effect spring reset cylinder ends is fastenedly connected with fixed handle; be connected with hydraulic handle by at least two fulcrums simultaneously; one of them fulcrum is connected with plunger; plunger is positioned at single effect spring reset hydraulic cylinder inside; described cutting implement is except cutter head, and its integral outer all is laid with insulating barrier.
Piston rod moves up and down when shearing, and also is in the integral insulation state for making piston rod in shear history, in the described insulating barrier, is positioned at the screw thread form of insulating barrier for freely stretching of piston rod end.
Described single effect spring reset hydraulic cylinder is made up of cylinder body, piston rod, spring, oil circuit switch, and wherein, the oil circuit switch is located at the cylinder body outside, and piston rod is arranged on cylinder interior, and is provided with spring at the upper cover of piston rod of cylinder interior.
The principle of the invention is simple, is convenient to make; Volume is little, and is in light weight, carries, easy to use; With low cost, be convenient to promote the use of; When the present invention works, adopt the hand-hydraulic reinforcing, shear rate is fast, and is laborsaving, and the efficient height saves time; Down cut on the cutter head has avoided causing adjacent little busbar short-circuit; Whole external application insulating barrier avoids the operating time to cause little busbar short-circuit, also can avoid the staff to get an electric shock; Not only fill up the blank of domestic like product; also solved the technical barrier of the quick-fried insurance of the charged little bus of shearing relay protection alternating current-direct current that present vast relay protection worker faces for a long time; realize cutting off safely, fast, like a cork operating little bus; avoid the short circuit that causes in the shear history; thereby reduced the possibility of protective relaying maloperation or tripping, improved the reliability of operation of power networks.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is done into a ground and introduce in detail, but protection scope of the present invention is not limited thereto:
As shown in drawings; the little bus dedicated hydraulic of relay protection insulation cutter cutting tool: comprise the grooved base plate 1 that is provided with lateral aperture 8; grooved base plate 1 is fastenedly connected with single effect spring reset hydraulic cylinder 2; described single effect spring reset hydraulic cylinder 2 is made up of cylinder body 21, piston rod 22, spring 23, oil circuit switch 24; wherein; oil circuit switch 24 is located at cylinder body 21 outsides, and piston rod 22 is arranged on cylinder body 21 inside, and is arranged with spring 23 on the piston rod 22 of cylinder body 21 inside.Piston rod 22 ends of single effect spring reset hydraulic cylinder 2 are located in the lateral aperture 8, piston rod 22 ends are fastenedly connected with cutter head 3, single effect spring reset hydraulic cylinder 2 ends are fastenedly connected with fixed handle 4, simultaneously by two fulcrums, 9, the 10 hinged hydraulic handle 5 that are connected with, one of them fulcrum 9 hinged plunger 6 that are connected with, plunger 6 is positioned at single effect spring reset hydraulic cylinder 2 inside, and described cutting implement is except cutter head 3, and its integral outer all is laid with insulating barrier.In the described insulating barrier, be positioned at the screw thread form of insulating barrier 7 for freely stretching of piston rod 22 ends.
During shearing, little bus copper rod 11 is stuck between grooved base plate 1 and the cutter head 3, fasten oil circuit switch 24, the left hand fixed handle 4 of holding with a firm grip, the right hand is pulled hydraulic handle 5, plunger 6 begins to drive hydraulic oil and moves downward, and advances cutter head 3 to cut off little bus copper rod 11 thereby promote piston rod 22, and compression takes place this process medi-spring 23.After the shearing, unclamp oil circuit switch 24 and hydraulic handle 5, under the elasticity restitution power of spring 23, piston rod 22 drives cutter head 3 and bounces back automatically.
Claims (3)
1. the little bus dedicated hydraulic of relay protection insulation cutter cutting tool; it is characterized in that: comprise the grooved base plate that is provided with lateral aperture; the grooved base plate is fastenedly connected with single effect spring reset hydraulic cylinder; the piston rod end of single effect spring reset hydraulic cylinder is located in the lateral aperture; the piston rod end is fastenedly connected with cutter head; single effect spring reset cylinder ends is fastenedly connected with fixed handle; be connected with hydraulic handle by at least two fulcrums simultaneously; one of them fulcrum is connected with plunger; plunger is positioned at single effect spring reset hydraulic cylinder inside; described cutting implement is except cutter head, and its integral outer all is laid with insulating barrier.
2. the little bus dedicated hydraulic of relay protection as claimed in claim 1 insulation cutter cutting tool is characterized in that: in the described insulating barrier, be positioned at the screw thread form of insulating barrier for freely stretching of piston rod end.
3. the little bus dedicated hydraulic of relay protection as claimed in claim 1 or 2 insulation cutter cutting tool; it is characterized in that: described single effect spring reset hydraulic cylinder is made up of cylinder body, piston rod, spring, oil circuit switch; wherein; the oil circuit switch is located at the cylinder body outside; piston rod is arranged on cylinder interior, and is provided with spring at the upper cover of piston rod of cylinder interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133223 CN102198478A (en) | 2010-03-26 | 2010-03-26 | Special hydraulic insulated shearing tool for relay protection small bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133223 CN102198478A (en) | 2010-03-26 | 2010-03-26 | Special hydraulic insulated shearing tool for relay protection small bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102198478A true CN102198478A (en) | 2011-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010133223 Pending CN102198478A (en) | 2010-03-26 | 2010-03-26 | Special hydraulic insulated shearing tool for relay protection small bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102198478A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364776A (en) * | 2011-10-09 | 2012-02-29 | 河南省电力公司新乡供电公司 | Quadratic miniature-busbar excising forceps |
| CN102500723A (en) * | 2011-11-02 | 2012-06-20 | 苏州金牛精密机械有限公司 | Wire cutting jig |
| CN103691847B (en) * | 2013-12-12 | 2015-07-08 | 国家电网公司 | Cut-off safety tool for electrified low-voltage conductor |
| CN105312454A (en) * | 2015-11-09 | 2016-02-10 | 国家电网公司 | Cutting device for electrified miniature bus |
| CN106216761A (en) * | 2016-09-14 | 2016-12-14 | 黄绍华 | A kind of hydraulic shear |
| CN109093033A (en) * | 2018-09-07 | 2018-12-28 | 曾金玉 | Steel-cored aluminium strand secant spanner |
| CN109622821A (en) * | 2019-01-31 | 2019-04-16 | 周子懿 | A kind of hydraulic wire nipper |
| CN109865785A (en) * | 2019-02-22 | 2019-06-11 | 浙江盈瑞数字科技有限公司 | A kind of hand-hydraulic heavy caliber reinforcing bar cutting means |
| CN111896779A (en) * | 2020-07-21 | 2020-11-06 | 贵州电网有限责任公司 | Voltage caliper of metering and detecting instrument |
| CN112222517A (en) * | 2020-09-29 | 2021-01-15 | 国网河南省电力公司平顶山供电公司 | Double-row small bus trimming device and method for screen top of relay protection screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143533Y (en) * | 1992-11-11 | 1993-10-13 | 胡心铭 | Hand hydraulic steel rod cutter |
| CN2356777Y (en) * | 1998-12-31 | 2000-01-05 | 大连拉伸机厂 | Machine for cutting steel strand |
| CN2601134Y (en) * | 2002-12-30 | 2004-01-28 | 哈尔滨工程大学 | Hydraulic cutoff appts. for deep under water guy |
| CN2907962Y (en) * | 2006-06-20 | 2007-06-06 | 西安西电变压器有限责任公司 | Hydraulic cutting tool of conducting wire |
| CN201644676U (en) * | 2010-03-26 | 2010-11-24 | 河南省电力公司许昌供电公司 | Special hydraulic insulating cutting tool for relay protection small bus bar |
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2010
- 2010-03-26 CN CN 201010133223 patent/CN102198478A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143533Y (en) * | 1992-11-11 | 1993-10-13 | 胡心铭 | Hand hydraulic steel rod cutter |
| CN2356777Y (en) * | 1998-12-31 | 2000-01-05 | 大连拉伸机厂 | Machine for cutting steel strand |
| CN2601134Y (en) * | 2002-12-30 | 2004-01-28 | 哈尔滨工程大学 | Hydraulic cutoff appts. for deep under water guy |
| CN2907962Y (en) * | 2006-06-20 | 2007-06-06 | 西安西电变压器有限责任公司 | Hydraulic cutting tool of conducting wire |
| CN201644676U (en) * | 2010-03-26 | 2010-11-24 | 河南省电力公司许昌供电公司 | Special hydraulic insulating cutting tool for relay protection small bus bar |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364776A (en) * | 2011-10-09 | 2012-02-29 | 河南省电力公司新乡供电公司 | Quadratic miniature-busbar excising forceps |
| CN102500723A (en) * | 2011-11-02 | 2012-06-20 | 苏州金牛精密机械有限公司 | Wire cutting jig |
| CN103691847B (en) * | 2013-12-12 | 2015-07-08 | 国家电网公司 | Cut-off safety tool for electrified low-voltage conductor |
| CN105312454A (en) * | 2015-11-09 | 2016-02-10 | 国家电网公司 | Cutting device for electrified miniature bus |
| CN110369642A (en) * | 2015-11-09 | 2019-10-25 | 国家电网公司 | Charge small bus cutter |
| CN106216761A (en) * | 2016-09-14 | 2016-12-14 | 黄绍华 | A kind of hydraulic shear |
| CN109093033A (en) * | 2018-09-07 | 2018-12-28 | 曾金玉 | Steel-cored aluminium strand secant spanner |
| CN109622821A (en) * | 2019-01-31 | 2019-04-16 | 周子懿 | A kind of hydraulic wire nipper |
| CN109865785A (en) * | 2019-02-22 | 2019-06-11 | 浙江盈瑞数字科技有限公司 | A kind of hand-hydraulic heavy caliber reinforcing bar cutting means |
| CN111896779A (en) * | 2020-07-21 | 2020-11-06 | 贵州电网有限责任公司 | Voltage caliper of metering and detecting instrument |
| CN111896779B (en) * | 2020-07-21 | 2022-10-18 | 贵州电网有限责任公司 | Voltage caliper of metering and detecting instrument |
| CN112222517A (en) * | 2020-09-29 | 2021-01-15 | 国网河南省电力公司平顶山供电公司 | Double-row small bus trimming device and method for screen top of relay protection screen |
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Application publication date: 20110928 |