HRP980194A2

HRP980194A2 - Terminal suitable for live or dead working, especially terminal for a flash barrier or an overload cut-out

Info

Publication number: HRP980194A2
Application number: HR971438A
Authority: HR
Inventors: Markku Kokkonen
Original assignee: Ensto Sekko Oy
Priority date: 1997-04-07
Filing date: 1998-04-07
Publication date: 1998-12-31
Also published as: NO981563L; RO118344B1; FI971438A0; NO981563D0; EP0871250A3; FI101913B; EP0871250A2; PL325663A1; FI101913B1

Description

Opisani se izum odnosi na priključak prikladan za rad pod naponom i bez napona, naročito priključak za osiguranje protiv iskrenja ili za isključivanje preopterećenja, koji obuhvaća jedno tijelo, žlijeb u tijelu za prihvaćanje kabela koji se treba štititi ili koji se treba priključiti kao ogranak, element u obliku poluge, i jedan stezni element koji steže element u vidu poluge, a pomičan je u žlijebu okretanjem elementa u obliku poluge radi stezanja kabela unutar žlijeba i za uspostavljanje kontakta između kabela i elementa u obliku poluge. The described invention relates to a connection suitable for working under voltage and without voltage, in particular a connection for protection against sparks or for disconnecting overload, which includes a single body, a groove in the body for accepting a cable to be protected or to be connected as a branch, element in the form of a lever, and one clamping element that clamps the element in the form of a lever, and is movable in the groove by turning the element in the form of a lever in order to clamp the cable inside the groove and to establish contact between the cable and the element in the form of a lever.

Ova se vrsta priključaka koristi na srednje-naponskim kablovima, i na neizoliranim, golim žicama, i na izoliranim visećim vodičima, za priključivanje rogova zaštite od iskrenja ili prekidača preopterećenja ili kao priključak za grananje. Od ranije je poznato (na primjer, EP-170545) da se koristi kuka koja se pruža od gornjeg brida prihvatnog žlijeba duž priključka, radi lakšeg postavljanja priključka na žicu i pomoću dugog štapa namijenjenog za rad pod naponom. Kod poznatih priključaka, međutim, konstrukcija priključka i položaj kuke ne olakšavaju rad na odstojanju na najbolji mogući način za postavljanje priključka da, prvo, lako zahvati kabel i da dovede kabel točno u prihvatni žlijeb, kao i da ga drži u žlijebu dok se vrši stezanje priključka. This type of connection is used on medium-voltage cables, both on uninsulated, bare wires, and on insulated hanging conductors, to connect spark protection horns or overload switches or as a branching connection. It has been previously known (for example, EP-170545) to use a hook extending from the upper edge of the receiving groove along the connection, to facilitate the installation of the connection on the wire and by means of a long rod intended for working under voltage. With known connectors, however, the construction of the connector and the position of the hook do not facilitate working at a distance in the best possible way to position the connector to, first, easily grip the cable and to bring the cable exactly into the receiving groove, as well as to hold it in the groove while clamping is performed connection.

Jedan je cilj izuma da se ostvari poboljšani priključak čije je tijelo projektirano, a njegova kuka za hvatanje je postavljena tako da se može raditi pod naponom ili uz isključivanje napona, a da se pri tome kabel lakše spregne sa priključkom i da kabel automatski zauzme pravilan položaj u prihvatnom žlijebu nakon pritezanja ili stezanja priključka. One object of the invention is to provide an improved connector whose body is designed and its catch hook is positioned so that it can be operated under voltage or when the voltage is disconnected, so that the cable is more easily coupled to the connector and the cable automatically takes the correct position in the receiving groove after tightening or clamping the connection.

Ovaj je cilj izuma ostvaren na osnovu karakterističnih svojstava izloženih u priloženom zahtjevu 1. Zavisni zahtjevi izlažu preporučljive izvedbe izuma. This objective of the invention was achieved on the basis of the characteristic properties set forth in the attached claim 1. Dependent claims set forth recommended embodiments of the invention.

Izum će biti detaljnije opisan sa pozivom na priložene crteže, gdje: The invention will be described in more detail with reference to the attached drawings, where:

- Slike 1 i 2 prikazuju priključak prema prvoj izvedbi izuma u pogledu sa prednje i sa zadnje strane, a - Figures 1 and 2 show the connection according to the first embodiment of the invention in front and rear views, a

- Slika 3 prikazuje priključak prema drugoj izvedbi izuma u pogledu paralelnom jednom kabelu. - Figure 3 shows the connection according to another embodiment of the invention with respect to a parallel single cable.

Prema slikama 1 i 2, priključak obuhvaća priključak zaštite od iskrenja, koji ima jedan duguljasti element 2 oblika poluge, koji može funkcionirati kao rog zaštite od iskrenja ili koji može biti zamijenjen jednim rogom zaštite od iskrenja. Element 2 oblika poluge ima na donjem kraju ušicu 12 koja se može zahvatiti jednim dugim štapom, čime se priključak može podići i postaviti na kabel koji može biti pod naponom ili isključen iz mreže. According to figures 1 and 2, the connection comprises a spark protection connection, which has one oblong element 2 in the form of a lever, which can function as a spark protection horn or which can be replaced by a spark protection horn. The lever-shaped element 2 has at its lower end an eyelet 12 that can be grasped with a long stick, with which the connector can be lifted and placed on a cable that can be energized or disconnected from the network.

Priključak obuhvaća tijelo 1, koje ima oblik sličan oluku radi formiranja prihvatnog žlijeba 3 za prihvaćanje kabela 6. Stezni element 7 zahvaća element 2 oblika poluge koji se može okretati radi pomicanja steznog elementa 7 u žlijebu 3 radi stezanja kabela 6 unutar žlijeba 3, i za uspostavljanje kontakta između kabela 6 i elementa 2 oblika poluge. Kao alternativa navoju, može se koristiti jedan opružni mehanizam. The connector comprises a body 1, which has a gutter-like shape to form a receiving groove 3 for receiving the cable 6. The clamping element 7 engages a lever-shaped element 2 which can be rotated to move the clamping element 7 in the groove 3 to clamp the cable 6 inside the groove 3, and for establishing contact between the cable 6 and the lever-shaped element 2. As an alternative to threading, a single spring mechanism can be used.

U slučaju prikazanom na slici 3, element 2 oblika poluge ima na gornjem kraju navoj 10 uvrnut u stezni element 7, a element 2 oblika poluge ima prstenasti žlijeb 11 u kome je prsten za osiguranje koji služi kao ležaj, tako da se element 2 oblika poluge može okretati u odnosu na tijelo 1, ali se ne može pomicati u aksijalnom smjeru. In the case shown in Figure 3, the lever-shaped element 2 has at its upper end a thread 10 screwed into the clamping element 7, and the lever-shaped element 2 has an annular groove 11 in which there is a securing ring that serves as a bearing, so that the lever-shaped element 2 can rotate relative to body 1, but cannot move in the axial direction.

Alternativna izvedba prikazana je na slikama 1 i 2, gdje element 2 oblika poluge ima navoj 10' uvrnut u maticu 13 uz tijelo 1. U ovom slučaju gornji kraj (nije prikazan) elementa 2 oblika poluge, okretno je vezan za stezni element 7, ali je aksijalno nepomičan. An alternative design is shown in Figures 1 and 2, where the lever-shaped element 2 has a thread 10' screwed into the nut 13 next to the body 1. In this case, the upper end (not shown) of the lever-shaped element 2 is rotatably connected to the clamping element 7, but is axially stationary.

Prema trećoj alternativi, rješenje prikazano na slikama 1 i 2 konzistentno je sa rješenjem sa slike 3 u pogledu uležištenja 11 i navoja 10 uvrnutog u stezni element, pri čemu je funkcija navoja 10' i matice 13 osiguranje elementa 2 oblika poluge, ili omogućavanje mogućnosti za njegovu zamjenu. According to the third alternative, the solution shown in Figures 1 and 2 is consistent with the solution in Figure 3 with regard to the housing 11 and the thread 10 screwed into the clamping element, whereby the function of the thread 10' and the nut 13 is to secure the element 2 in the form of a lever, or to enable the possibility of its replacement.

Duž gornje strane žlijeba 3, tijelo 1 je načinjeno izduženo u pravcu paralelnom žlijebu 3 kako bi se kabel oslanjao na većoj dužini. Duž gornje strane žlijeba 3, tijelo je zakrivljeno tako da formira element 4 za hvatanje, koji djelomično definira otvorenu stranu žlijeba 3, a udaljen je od steznog elementa 7 za neki razmak duž žlijeba 3. Na taj način element 4 za hvatanje formira otvoreni žlijeb za hvatanje ili kuku 5 za hvatanje, koja može prihvatiti kabel u pravcu poprečnom na žlijeb 3, kako je prikazano linijom točka-crta na slici 2. Iz tog položaja zahvaćanja, kabel automatski zauzima pravilan položaj u žlijebu 3, nakon početka okretanja elementa 2 oblika poluge, u smjeru pritezanja steznog elementa. Na taj se način tijelo 1 okreće po kabelu 6 sve dok se prihvatni žlijeb 3 ne poravna sa kabelom 6 i priključak ne spadne na kabel u položaj prikazan na slici 3. Pored toga što element 4 za hvatanje formira otvoreni žlijeb za hvatanje ili kuku 5 za hvatanje, element 4 također djeluje kao primalac okretnog momenta po stezanju priključka na kabelu. Along the upper side of the groove 3, the body 1 is made elongated in the direction parallel to the groove 3 so that the cable rests on a longer length. Along the upper side of the groove 3, the body is curved to form a gripping element 4, which partially defines the open side of the groove 3, and is distant from the clamping element 7 by some distance along the groove 3. In this way, the gripping element 4 forms an open groove for catch or catch hook 5, which can accept the cable in a direction transverse to the groove 3, as shown by the dot-dash line in Figure 2. From this gripping position, the cable automatically takes the correct position in the groove 3, after the start of the rotation of the lever-shaped element 2 , in the direction of tightening of the clamping element. In this way, the body 1 rotates on the cable 6 until the receiving groove 3 is aligned with the cable 6 and the connector falls on the cable in the position shown in Figure 3. In addition to the gripping element 4 forming an open gripping groove or hook 5 for grip, element 4 also acts as a torque receiver by tightening the connection on the cable.

U slučaju prikazanom na slici 3, element 2 oblika poluge izveden je sa prekidačem 9 za preopterećenje. Pored naprijed opisanih primjena, izum se može primijeniti na sve ostale vrste priključaka pod naponom, tj. i za formiranje razdjelnih veza. In the case shown in Figure 3, the lever-shaped element 2 is made with an overload switch 9. In addition to the applications described above, the invention can be applied to all other types of live connections, i.e. also for the formation of distribution connections.

Claims

1. A connection suitable for working under voltage and without voltage, in particular a connection for protection against sparks or for disconnecting overload, comprising a body (1), a groove (3) in the body for accepting the cable (6) to be protected or which should be connected as a branch, element (2) in the form of a lever, and one clamping element (7) which clamps the element (2) in the form of a lever and is movable in the groove (3) by turning the element in the form of a lever to clamp the cable (6) inside the groove and for establishing contact between the cable (6) and the element (2) in the form of a lever, characterized by the fact that along the upper side of the groove (3) opposite the clamping element (7), the body (1) extends into the element (4) for catching, which it partly forms the open side of the groove (3), and is located at a distance from the clamping element (7) along the groove (3), whereby the gripping element (4) forms a gripping groove or hook (5) for gripping, for receiving the cable ( 6) in the direction transverse to the receiving groove (3), from where the cable is introduced into the receiving groove (3) by turning the body (1), and that, when the cable (6) is placed in place in the receiving groove (3), the gripping element (4) accepts the tightening torque after tightening the connector on the cable.

2. Connection according to claim 1, characterized in that the clamping element (7) is equipped with teeth (8) capable of piercing the cable insulation.

3. Connection according to claim 1 or 2, characterized in that the lever-shaped element (2) includes a spark protection horn.

4. Connection according to claim 1 or 2, characterized in that the lever-shaped element (2) comprises an overload switch (9).

5. A connection according to any one of claims 1 to 3, characterized in that the lever-shaped element (2) is equipped with an eyelet (12) at the lower end.

6. A connection according to any one of claims 1 to 5, characterized in that the lever-shaped element (2) has a seat (11) in the body (1), so that it is rotatable around its axis, but stationary in the axial direction.

7. Connection according to any one of claims 1 to 5, characterized in that the lever-shaped element (2) is screwed with its thread (10) into the nut (13) placed next to the body (1) and is rotatably connected to the clamping element (7) or by means of a spring, but stationary in the axial direction.

8. A connection according to any one of claims 1 to 7, characterized in that the lever-shaped element (2) is replaceable, whereby the same body (1) can be used for various applications.