DE1096451B - Single point rotary disconnector with clamping device for the counter switch - Google Patents

Description

The invention relates to a single point rotary disconnector with a for clamping the Counter-switch in the vicinity of the switched-on position longitudinally displaceable switch arm part.

Isolating switch, which at the end of the switch-on process clamps the counter-switch Effect actuation of a shift arm part are known. These switches mostly require spring mechanisms with a relatively complex structure, and also the counterpressure for triggering the clamping movement of the counter contact and an operating angle of the operating lever of more than 90 °.

The invention is intended to provide a single-point disconnector with a rotatable arm, which allows a robust design of the switching arm and its drive with the simplest design, so that a high level of operational safety is guaranteed.

In addition, the invention seeks to keep the angle of rotation of the drive lever, which makes the rotation small causes the switching arm by approximately 90 ° and the clamping of the counter-contact piece. Of the The angle of rotation should be less than 90 ° if possible.

Such switches are already known for a horizontal switch-on position, their usability as a single-point separator is not possible, as the clamping movement is triggered in this case would start too soon. You can only switch on satisfactorily in the horizontal position because the switching arm weight and the counterpressure of the counter-contact piece are involved. The latter should be the case with single-point separators should be avoided as far as possible because of the associated mechanical stresses.

According to the invention, a two-armed actuating lever which can be pivoted about a stationary axis is used in First switch on the switching arm, which can be pivoted about a stationary axis, via tabs on the one hand articulated at the lower end of a linkage displaceable in the switching arm and limited opposite the switching arm slidably and on the other hand articulated at the end of the operating lever, approximately pivoted by 90 ° without the first at an acute angle and then approximately perpendicular to the Shift arm axis engaging tabs move in the shift arm. Then the switch arm moves one end of the tab on a guide means of the switch arm and consequently also the linkage in the switch arm, to operate the clamping lever for the counter-contact, the pushing movement immediately before the Switch-on position is initiated by special conductive means.

In detail z. B. the operating lever has an axis on which the tabs are rotatably attached, and the displaceable Ge-one-point-Dr which is arranged in the switching arm He is always separated

with clamping device
for the counter-contact

^:

Applicant:

Ets. Merlin & Gerin Societe Anonyme,
ίο Grenoble, Isere (France)

Representative: Dipl.-Ing. W. Kuborn, patent attorney,
Düsseldorf, Tonhallenstr. 8th

Claimed priority:

France from June 28, 1957

Louis Debuit, Grenoble, Isere (France),
has been named as the inventor

rod a longer axis on which the tabs are rotatably attached with their other end, wherein the latter axis is arranged displaceably in elongated holes of the switching arm.

The longitudinal displacement of the axis arranged in the displaceable rod in the elongated holes is triggered towards the end of the switching movement when the axis hits fixed leading edges.

The axis around which the operating lever rotates is opposite to the axis around which the Switching arm rotates, displaced in such a way that the straight line connecting the two axes crossed by the path which is the axis carried by the operating lever at the end of the closing movement of the switching arm describes.

The drawing illustrates an embodiment of the invention.

Fig. 1 gives in elevation the active part of a single point disconnector again;

Fig. 2 is a side view of Fig. 1;

FIG. 3 shows, on a larger scale, the drive mechanism according to FIG. 1;

FIG. 4 illustrates a side view of FIG. 3.
In Fig. 1 and 2, 1 denotes the head of the post insulator, 2 is the actuating insulator and 3 is the drive lever for transmitting the movement of the insulator 2. The drive lever 3 rotates about an axis 4, which is attached to the post insulator 1 two plates 5 existing support frame is attached. The drive lever 3 carries an angle

009 697/393

lever arm 6, which consists of two flat irons. Of the Switching arm of the single-point disconnector is denoted by 7. It also consists of two flat rails, which rotate around the axis 8 mounted in the frame 5. The axis 8 is opposite the axis 4 something shifted. A linkage 9 slides between the flat rails of the switching arm 7 at one end an axle 10 which can be moved in two slots 15. The slots or elongated holes 15 are provided in the two flat rails forming the switching arm 7. About the axis 10 can two tabs II rotate, which are rotatably arranged on an axis 12 at their other end which is attached between the two flat rails forming the angle lever arm 6. The ends of the Axis 10 protrude over the two flat rails 7 carrying them, in such a way that they are at the end of the switch-on movement of the switching arm 7 temporarily slide on the inclined edges 13 of the frame plates 5. A stop 16, which is fixed between the frame plates 5, limits the movement of the switching arm 7. Another Stop 17, which is attached between the flat rails 7, limits the movement of the angle lever 6th

The mode of operation of the switch is as follows: When the single-point disconnector is in the open position the switching arm 7 is in the horizontal position and the actuating isolator 2 in its upper position. To close the single-point disconnector, the insulator 2 is pulled into its lowest position, whereupon the lever 3 via the angle lever arm 6, the axis 12, the connecting straps 11 and the axis 10 the switching arm 7 acts and forces it to rotate about its axis 8. As soon as the switching arm 7 a has reached an approximately vertical position, the axis 10 rests against the two inclined leading edges 13, whereby this axis must perform a slight movement upwards. This movement has the consequence that the previously approximately right angle between the connecting straps 11 and the switching arm 7 changed slightly is, as a result of which the tabs rotate through a small angle about the axis 12. This process, i.e. the change of the original angle between the tabs 11 and the switching arm 7 is facilitated by the fact that the mutual position of the Axes 10 and 12 is chosen so that during the first part of the switch-on movement of the switching arm 7 cross the paths described by them and that during the last angular degrees of the rotary movement of the arm, d. H. shortly before this reaches its vertical end position, the path of the axis 12 crosses the line connecting axes 4 and 8. As soon as the angle change between the tabs 11 and the switching arm 7 is initiated, the tabs cause a further displacement of the Axis 10 in the slots 15, which are provided in the flat rails 7 of the switching arm. At the end the switch-on movement, the axis 10 and the axis 12 are approximately on the center line of the switching arm 7, which is now in a vertical position. At the same time, the switching arm 7 hit the stop 16, which prevents its further movement.

The sliding movement of the axis 10 taking place in the slots 15 and the inevitably resulting Sliding movement of the linkage 9 is used to articulately attached to the end of the linkage by means of the Tab the two jaws of the clamping device towards each other. This mechanism is not further described because it does not belong to the subject matter of the invention.

At the end of the rotary movement of the lever 3, the angle lever arm 6 strikes against the stop 17. As a result, the jaws of the clamping device are blocked in their clamping position, since the axis 12 the has passed dead point.

Claims (4)

Patent claims: 1. Single-point rotary disconnector with one close by to clamp the counter-contact the switched-on position longitudinally displaceable switching arm part, characterized in that a two-armed, An actuating lever (3, 6) which can be pivoted about a stationary axis (4) when switched on initially the switch arm (7) pivotable about a stationary axis (8) via tabs (11), which on the one hand on the lower end of a linkage (9) displaceable in the switch arm (7) and articulated to the switch arm opposite to limited displacement and on the other hand articulated at the end (6) of the operating lever are pivoted approximately 90 °, without this being initially at an acute angle and then tabs (10, 11) engaging approximately perpendicular to the switch arm axis are located in the switch arm (7) move, and that he (3, 6) then one tab end (10) on a guide means (15) of the Switching arm (7) and consequently also the linkage (9) in the switching arm moves to clamping lever to operate for the counter-contact, with the pushing movement immediately before the switch-on position is initiated by special guide means (13). 2. Single-point rotary disconnector according to claim 1, characterized in that the operating lever (3, 6) carries an axis (12) on which the tabs (11) are rotatably mounted, and that the im Shift arm (7) arranged displaceable linkage (9) carries a longer axis (10) on which the Lugs (11) are rotatably attached at their other end, this axis (10) in elongated holes (15) of the switching arm (7) is arranged displaceably. 3. One-point rotary disconnector according to claim 2, characterized in that the longitudinal displacement the axis (10) in the elongated holes (15) towards the end of the switch-on movement by impact the axis (10) is triggered on stationary guide edges (13). 4. Single-point rotary disconnector according to claim 2, characterized in that the axis (4) to which the operating lever (3, 6) rotates relative to the axis (8) around which the Switching arm rotates, is displaced in such a way that the straight line connecting the two axes is off the track is crossed which the axis (12) carried by the operating lever (3, 6) at the end of the Describes the closing movement of the switching arm. Considered publications:
German patent specifications No. 485 493, 599 479,
885108, 964961; French Patent No. 1,062,903;
U.S. Patent Nos. 2,092,829, 2,276,257. 1 sheet of drawings © 009 697/393 12.