NO115845B - - Google Patents
Info
- Publication number
- NO115845B NO115845B NO16068265A NO16068265A NO115845B NO 115845 B NO115845 B NO 115845B NO 16068265 A NO16068265 A NO 16068265A NO 16068265 A NO16068265 A NO 16068265A NO 115845 B NO115845 B NO 115845B
- Authority
- NO
- Norway
- Prior art keywords
- clamp
- bead
- pressure spindle
- contact
- spindle
- Prior art date
Links
- 238000003801 milling Methods 0.000 claims description 23
- 239000011324 bead Substances 0.000 claims description 22
- 239000004020 conductor Substances 0.000 claims description 10
- 235000013601 eggs Nutrition 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/26—Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact
Landscapes
- Milling Processes (AREA)
- Sawing (AREA)
Description
Klemme til kontaktdannelse på en elektrisk leder, Clamp for making contact on an electrical conductor,
særlig til jording av en skinne. especially for grounding a rail.
Oppfinnelsen angår en klemme som tjener til kontaktdannelse på en elektrisk leder, særlig til jording av en skinne, og har en trykkspindel fort i klemmelegemet samt en freser ved forenden av spindelen» The invention relates to a clamp that serves to form a contact on an electrical conductor, in particular for grounding a rail, and has a pressure spindle fast in the clamp body as well as a milling cutter at the front end of the spindle"
Kjente klemmer av denne art tjener til å danne en god elektrisk kontakt på en leder, og til dette formål blir isolerende skikt som eventuelt foreligger på lederen, som farvestrok eller rust, revet resp. hovlet bort av freseren inntil det blanke metall er nådd. Known clamps of this type serve to form a good electrical contact on a conductor, and for this purpose any insulating layer that may be present on the conductor, such as paint or rust, is torn or planed away by the cutter until the bare metal is reached.
Ved kjente klemmer av denne art tjener freseren ikke bare til å fjerne de isolerende skikt, men også til å lede strom-men efter at skiktene er fjernet, d.v.s, at kontaktdannelsen mellem klemmen og lederen skjer via eggene på freseren. I den forbindelse er det uheldig at eggene på freseren ikke danner noen stor kontaktflate, så disse smale egger ved opptredende store strøm-styrker eventuelt til og med kan smelte bort som følge av sterk varmeutvikling. In the case of known clamps of this type, the cutter serves not only to remove the insulating layers, but also to conduct the current after the layers have been removed, i.e. that the formation of contact between the clamp and the conductor takes place via the edges of the cutter. In this connection, it is unfortunate that the edges of the cutter do not form a large contact surface, so these narrow edges may even melt away as a result of strong heat generation when large currents occur.
For å unngå denne ulempe blir det ifølge oppfinnelsen foreslått å forsyne en klemme av den innledningsvis nevnte art med et med freseren samvirkende kontaktlegeme med kontaktflater som kommer til anlegg mot en av freseren på lederen utfreset kontaktflate. Herved blir det oppnådd at freseren alene utforer rivearbeidet, mens den egentlige kontaktdannelse efter fjernelsen av de isolerende skikt skjer ved hjelp av kontaktlegemet. Kontaktlegemet har et tilstrekkelig areal til å sikre den nødvendige strømovergang mellem skinne og klemme. Kontaktlegemet består fortrinnsvis av en kobberlegering som er godt elektrisk ledende og kan påkjennes sterkt mekanisk. Videre er kontaktlegemet og freseren hensiktsmessig forskyvbare i forhold til hverandre i trykkspindelens retning. In order to avoid this disadvantage, according to the invention, it is proposed to provide a clamp of the type mentioned at the outset with a contact body interacting with the cutter with contact surfaces that come into contact with a contact surface milled on the conductor by the cutter. Hereby, it is achieved that the cutter alone performs the tearing work, while the actual contact formation after the removal of the insulating layers takes place with the help of the contact body. The contact body has a sufficient area to ensure the necessary current transition between rail and clamp. The contact body preferably consists of a copper alloy which is electrically conductive and can be subject to strong mechanical stress. Furthermore, the contact body and the milling cutter are appropriately displaceable in relation to each other in the direction of the pressure spindle.
Ved en utforelsesform av oppfinnelsen er kontaktlegemet fast anbragt på forenden av trykkspindelen, og freseren kan mot trykket av en fjær forskyves i forhold til trykkspindelen i retning mot dennes bakre ende. Herunder rager freseren i forreste stilling fortrinnsvis frem foran kontaktlegemet. In one embodiment of the invention, the contact body is fixedly placed on the front end of the pressure spindle, and the milling cutter can be displaced against the pressure of a spring in relation to the pressure spindle in the direction towards its rear end. Below this, the milling cutter in the front position preferably protrudes in front of the contact body.
Hensiktsmessig er der ved forenden av trykkspindelen anordnet en vulst der tjener som kontaktlegeme, og som har innsnitt som forløper i trykkspindelens retning. Freseren er samtidig utformet som en ring som omgir trykkspindelen og har fortsettelser som har glidepasning i innsnitt i vulsten, rager utenfor vulstens endeflater og er forsynt med egger på forsiden. Appropriately, a bead is arranged at the front end of the pressure spindle which serves as a contact body, and which has an incision which extends in the direction of the pressure spindle. At the same time, the milling cutter is designed as a ring that surrounds the pressure spindle and has extensions that have a sliding fit in incisions in the bead, project outside the end faces of the bead and are provided with eggs on the front.
På vulstens endeflate kan der foran innsnittene, sett On the bead's end face, there can be in front of the incisions, set
i trykkspindelens retning, være anordnet spalter til bortføring av spon. in the direction of the pressure spindle, be provided with slits for the removal of chips.
Dybden av innsnittene svarer fortrinnsvis til tykkelsen av vulsten, og høyden av fortsettelsene fortrinnsvis til tykkelsen av freserringen. The depth of the incisions preferably corresponds to the thickness of the bead, and the height of the continuations preferably to the thickness of the milling ring.
Hensiktsmessig er trykkspindelens endeflate forsenket i forhold til vulsten. Appropriately, the end surface of the pressure spindle is recessed in relation to the bead.
Fjæren kan virke mellem et fast anslag på trykkspindelen og baksiden av freserringen. The spring can act between a fixed stop on the pressure spindle and the back of the milling ring.
Tegningen viser et utforelseseksempel på en klemme ifølge oppfinnelsen. Fig. 1 er et sideriss av klemmen i fresestilling og anbragt mot en jernbaneskinne. Fig. 2 viser klemmen i grundriss i kontaktstilling uten at skinnen er vist, og The drawing shows an embodiment of a clamp according to the invention. Fig. 1 is a side view of the clamp in milling position and placed against a railway rail. Fig. 2 shows the clamp in plan view in the contact position without the rail being shown, and
fig»3 viser kontaktlegemet og eggene på freseren sett forfra. fig»3 shows the contact body and the eggs on the milling cutter seen from the front.
Klemmen tjener fortrinnsvis til å anbringes mot en jernbaneskinne 1, idet klemmelegemet anbringes på skinnefoten 3, mens kontaktdannelsen skjer mot skinnesteget 2. På klemmelegemet 4 er der ved hjelp av en skrue 5 festet en kabelsko 6 på en leder 7, særlig en jordleder. Klemmelegemet er forsynt med en boyle 8, som spennes fast på skinnefoten 3»Videre er der på klemmelegemet 4 utformet en kraftig bossing 9 med en gjengeboring til foring av trykkspindelen 10. Denne spindel er ved sin bakre ende forsynt med et håndtak 11. Ved forenden har trykkspindelen 10 en vulst 12 der tjener som kontaktlegeme og har firkantede langsgående innsnitt 13. På endeflaten har trykkspindelen en forsenkning 14. På trykkspindelen glir en freserring 15, forsynt med firkantede fortsettelser 16 som rager frem foran vulsten 12 og i forenden har egger 17 1 likhet med et dreiestål. På trykkspindelen er der fast anbragt et anslag 18, og mellem dette og baksiden av freserringen 15 virker en stabel av tallerkenf jærer 19. Mellem innsnittene lj5 er der på endeflaten av vulsten, nemlig foran innsnittene sett i dreieretningen, utformet spalter 20 som sponene av de avhovlede skikt kan fores bort igjennem. The clamp is preferably used to be placed against a railway rail 1, the clamping body being placed on the rail foot 3, while the contact formation takes place against the rail step 2. On the clamping body 4, a cable shoe 6 is attached to a conductor 7, especially an earth conductor, by means of a screw 5. The clamping body is provided with a boyle 8, which is clamped onto the rail foot 3»Furthermore, a strong boss 9 is formed on the clamping body 4 with a threaded bore for lining the pressure spindle 10. This spindle is provided at its rear end with a handle 11. At the front end the pressure spindle 10 has a bead 12 that serves as a contact body and has square longitudinal incisions 13. On the end surface, the pressure spindle has a recess 14. On the pressure spindle slides a milling ring 15, provided with square extensions 16 that protrude in front of the bead 12 and at the front end have eggs 17 1 similarity to a turning steel. A stop 18 is fixed on the pressure spindle, and between this and the back of the milling ring 15 a stack of disc springs 19 acts. Between the notches lj5 there are on the end face of the bead, namely in front of the notches seen in the direction of rotation, slots 20 designed as the chips of the flattened layers can be fed through.
Som det spesielt fremgår av fig. 3, er der på endeflaten av vulsten 12 tildannet en kontaktflate 21 som er avbrudt av innsnittene 13 og spaltene 20, og som er betraktelig storre enn arealet av spissene av freserens egger. Kontaktringen 21 er riktignok på grund av forsenkningen 14 på forsiden av spindelen 10 og en svak avfasning ved omkretsen av vulsten 12 gjort smalere enn eggene 17 på freseren, så kontaktflaten 21 med sikkerhet bare angriper på de steder av skinnesteget 2 hvor de isolerende skikt er fullstendig fjernet ved hjelp av eggene 17 på freseren. As can be seen in particular from fig. 3, a contact surface 21 is formed on the end surface of the bead 12 which is interrupted by the incisions 13 and the slits 20, and which is considerably larger than the area of the tips of the cutter's eggs. The contact ring 21 is, of course, due to the recess 14 on the front of the spindle 10 and a slight chamfer at the circumference of the bead 12 made narrower than the edges 17 of the milling cutter, so the contact surface 21 only attacks with certainty those places of the rail step 2 where the insulating layers are completely removed using the eggs 17 on the cutter.
Disse egger er, som det fremgår av fig. 1, svakt avrundet i These eggs are, as can be seen from fig. 1, slightly rounded i
projeksjon på eggens respektive aksialplan for å hovle los de isolerende skikt særlig sterkt i området for kontaktflaten 21. projection on the egg's respective axial plane to plan the insulating layers particularly strongly in the area of the contact surface 21.
Klemmen ifølge oppfinnelsen arbeider på den måte at The clamp according to the invention works in such a way that
freserringen 15 ved dreining av spindelen 10 ved hjelp av hånd- the milling ring 15 by turning the spindle 10 using hand-
taket 11 blir tatt med av vulsten 12 og eggene 17 på endeflatene av fortsettelsene 16 således gnir på skinnesteget 2 og derved freser bort de isolerende skikt i form av en ring, jfr. fig.l. the roof 11 is carried away by the bead 12 and the eggs 17 on the end surfaces of the continuations 16 thus rub on the rail step 2 and thereby mill away the insulating layers in the form of a ring, cf. fig.l
På grund av trykkspindelens dreiebevegelse nærmer vulsten, der Due to the rotary movement of the pressure spindle, the bead approaches, where
tjener som kontaktlegeme, seg skinnesteget 2, d.v.s. at freserringen 15 forskyver seg i forhold tH den fremskrudde trykkspindel 10 mot trykket a<y>fjåarstabelen 19. Når vulsten 12 er skjøvet så langt frem at den kommer til anlegg mot skinnesteget 2, resp. freserringen er trykket så]angt tilbake at fjærstabelen 19 er fast sammen- serves as a contact body, the rail step 2, i.e. that the milling ring 15 moves in relation to the pushed forward pressure spindle 10 against the pressure of the spring stack 19. When the bead 12 has been pushed so far forward that it comes into contact with the rail step 2, resp. the milling ring is pushed back so far that the spring stack 19 is fixed together
trykket som vist på fig. 2, kommer kontaktflaten 21 til anlegg mot den av freseren blottlagte ring av nakent metall på skinnesteget 2 og,oppretter upåklagelig kontakt med stort areal mellem skinne- the pressure as shown in fig. 2, the contact surface 21 comes into contact with the ring of bare metal exposed by the cutter on the rail step 2 and creates impeccable contact with a large area between the rail
steget 2 og vulsten 12. Trykkspindelen trekkes til så langt at vulsten 12 med sin kontaktflate 21 blir presset fast inn i den ringformede avskrapning i isolasjonsskiktet. the step 2 and the bead 12. The pressure spindle is pulled so far that the bead 12 with its contact surface 21 is pressed firmly into the annular scraping in the insulation layer.
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH36182A DE1230876B (en) | 1964-11-30 | 1964-11-30 | Terminal for making contact with an electrical conductor, especially for grounding a rail |
Publications (1)
Publication Number | Publication Date |
---|---|
NO115845B true NO115845B (en) | 1968-12-16 |
Family
ID=7433762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO16068265A NO115845B (en) | 1964-11-30 | 1965-11-29 |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE673073A (en) |
CH (1) | CH430822A (en) |
DE (1) | DE1230876B (en) |
DK (1) | DK111624C (en) |
FI (1) | FI41171B (en) |
GB (1) | GB1085499A (en) |
NL (1) | NL6515538A (en) |
NO (1) | NO115845B (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936405A1 (en) * | 1979-09-08 | 1981-03-26 | Runge, Friedhelm, 42781 Haan | GROUNDING NUT |
GB2176138A (en) * | 1985-06-14 | 1986-12-17 | Collis Engineering | Drilling jig |
US5114354A (en) * | 1987-11-05 | 1992-05-19 | Franks George J Jr | Clamping device |
DE4024293C2 (en) * | 1990-07-31 | 1993-12-02 | Ackermann Albert Gmbh Co | Locking clip for an electrical installation wall duct |
GB9121999D0 (en) * | 1991-10-16 | 1991-11-27 | Robinson Jan | Method and apparatus for treating holes |
US6572390B2 (en) * | 2001-08-20 | 2003-06-03 | Tyco Electronics Corporation | Apparatus for grounding railway contact rails |
USD487427S1 (en) | 2003-01-29 | 2004-03-09 | Senior Industries, Inc. | Ground block |
USD486791S1 (en) | 2003-01-29 | 2004-02-17 | Senior Industries, Inc. | Ground block |
CN112086773B (en) * | 2020-09-11 | 2022-02-22 | 贵州电网有限责任公司 | Portable short circuit grounding wire convenient to operate |
-
1964
- 1964-11-30 DE DESCH36182A patent/DE1230876B/en active Pending
-
1965
- 1965-11-29 NO NO16068265A patent/NO115845B/no unknown
- 1965-11-29 CH CH1642365A patent/CH430822A/en unknown
- 1965-11-29 FI FI286665A patent/FI41171B/fi active
- 1965-11-30 GB GB5079065A patent/GB1085499A/en not_active Expired
- 1965-11-30 BE BE673073D patent/BE673073A/xx unknown
- 1965-11-30 NL NL6515538A patent/NL6515538A/xx unknown
- 1965-11-30 DK DK614065A patent/DK111624C/en active
Also Published As
Publication number | Publication date |
---|---|
DK111624C (en) | 1968-09-23 |
FI41171B (en) | 1969-06-02 |
GB1085499A (en) | 1967-10-04 |
DK111624B (en) | 1968-09-23 |
BE673073A (en) | 1966-03-16 |
NL6515538A (en) | 1966-05-31 |
DE1230876B (en) | 1966-12-22 |
CH430822A (en) | 1967-02-28 |
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