DE1049463B - - Google Patents

Description

Federal Republic of Germany

GERMAN

PATENT OFFICE

PATENT DOCUMENT 1049 REGISTRATION ACr

NOTICE THE REGISTRATION AND EDITION DEH EDITORIAL:

ISSUE OF PATENT LETTERING:

kl. 21c 28/03

INTERNAT. KL. H 02 c October 11, 1952

January 29, 1959

July 23, 1959

AGREES OBEREIN WITH EXPLOITATION 1949 163 (S 30622 VIIIb / 21 o)

The invention relates to busbar disconnectors for low-voltage switchgear with multi-conductor busbars from multiple flat conductors! with rotatable contact pieces, which are inserted into the gaps between the rails intervening connecting multiple flat conductors, especially for encapsulated switchgear.

It is known per se for isolating switches to arrange the switch blade centrally on the drive shaft, which is mounted in the middle between the contact points, so that two contact points result in the course of the line. This ensures that the lateral deflection of the contact pieces is small and only a smaller space requirement is achieved than when using one-sided separating pieces that deflect far to the side. Such an arrangement is therefore particularly advantageous in encapsulated switchgear comb-like ao circuit conductor engage into the rail gaps of arrival and first run when switching on a swivel movement, are known. these switching pieces, upon further rotation in order to increase the contact pressure by both sides of the rotatable contact members are arranged pressure plates zusamrnenzu- "5. press. this is known to the This type of rail separator is achieved by means of a right-hand and left-hand threading shaft and a relatively extensive crank drive with crank rods. _v

The invention, which relates to a busbar disconnector for low-voltage switchgear with multiple flat conductors, the connecting conductors of which also provide the contact surfaces for the separating pieces loosely arranged on a centrally mounted shaft, the separating pieces engaging in a comb-like manner in the gaps between the rails of the connecting conductors and, when rotating, the shaft initially a pivoting movement execute and are pressed together with further rotation to increase the contact pressure by means of opposing threads on the drive shaft arranged axially displaceable pressure plates on both sides of the separating pieces, solves this problem with much simpler means. The invention consists in that the rotatable separating pieces and the pressure plates are carried along via one or more slip clutches, one side of which is fixed on the drive shaft and the other side of which is connected to the separating pieces and the pressure plates via bolts, with the pivoting movement of the separating pieces being carried out a stop, for example a bolt, is limited so that the further rotation of the drive shaft with sliding clutch clutches pressing the pressure plates by means of the counter-rotating rail separators for low-voltage dialing systems with multi-filament rail ladders

Patented for:

Siemens-Schudcertwerke Corporation, Berlin and Erlangen

Albert Kübel, Berlin-Wilmersdorf, has been named as the inventor

According to the invention, the separation and pressure pieces can be threaded through one or more Friction clutches be connected to the drive shaft. These friction clutches can slip clutches be, which slip as soon as the pivoting movement of the contact pieces has ended. As you continue to turn the shaft are then the two pressure plates, of which one with the right and the other with Left-hand thread is provided by the right-hand and left-hand threads of the drive shaft against the outer Separating pieces pressed. When the rail separator is opened, the individual processes follow one another in reverse Way. When the switch is opened, the pressure pieces are opened first. As soon as the Friction of the movable Trenastiicke on the fixed connection pieces by releasing the contact pressure is sufficiently reduced, the movable separators from the shaft on the now not more slipping clutch carried along, which opens the disconnector.

The invention has the advantage for such rail separators that significant weakening of the rail cross-sections as a result of the omission of the necessary for cam disk drives. Guide slots can be avoided and that the drive shaft can be operated in a simple manner by means of a handwheel

909 563/254

Claims (3)

can. As a result of the high contact pressure, you can use non-silver-plated copper or aluminum dummy contacts. An embodiment of a rail separator according to the invention is shown schematically in FIGS. 1 and 2 in a top view. The two busbars to be connected to one another are denoted by 1 and 2. They consist of multiple trailing leads 3 and 4, with which fixed switching and connecting pieces 5 and 6 are connected by bolts 7 and 8, respectively. The fixed connection pieces 5 and 6 are fastened in a frame 9, 10 made of insulating material with the aid of spacer sleeves 11 and screws 12. A stop bolt 13 is arranged on the frame 9, 10 with the aid of supports 14. The movable separators 15 are loosely lined up on the shaft 16 and below. Intermediate joining of spacer sleeves 17 mounted on the bolts 20 and 21, respectively. They are held together by the pressure plates 18 to which the outer contact piece 15 a are fastened by screws 19. The WellelS has right-hand and left-hand threads in a manner known per se, so that the pressure plates 18 move towards one another in one direction of rotation of the shaft and away from one another in the other direction of rotation of the shaft. A ratchet coupling is denoted by 22 and as 23, which on the one hand are firmly connected to the shaft 16 and on the other hand are connected to the separating sticks 15 and the pressure plates 18 by means of the bolts 20 and 21. 24 is an isolating coupling and 25 is the handwheel for driving the disconnector. The disconnector is shown in the switched-on position. To switch off, the handwheel is turned in the direction of arrow 26. The movable separators strike against the stop 13, so that further rotation of the handwheel 25 lifts the pressure plates 18 sufficiently far until a further stop 28 is reached. The open position is denoted by 27. PATENT TRANSPECIY: 1.Bar separator for low-voltage switchgear with multiple flat conductors, whose connecting conductors also provide the contact surfaces for the step pieces loosely arranged on a centrally mounted shaft, the separating pieces engaging in _: the gaps in the connecting conductors and initially executing a swiveling movement when the shaft rotates and at further rotation for the purpose of increasing the contact pressure by pressure plates arranged on both sides of the separating pieces and axially displaceable by means of opposing threads on the drive shaft, characterized in that the rotating separating pieces (15) and the pressure plates (18) via one or more. Slipping clutches (22, 23) are taken along, one side of which is firmly seated on the drive shaft (16) and the other side of which is connected to the separating pieces and the pressure plates via bolts (20, 21), the pivoting movement of the separating pieces being controlled by a stop (13 ), for example bolts, is limited, so that by further rotation of the drive shaft (16) with sliding friction clutches, the pressure plates are pressed by means of the opposing threads. 2. Rail separator according to claim 1, characterized in that unsilvered copper or Aluminum contact pieces are used, 3. Rail separator according to claim 1, characterized in that an insulating coupling (24) is arranged between a handwheel (25) and the drive shaft (16). Considered publications: German Patent No. 593137; U.S. Patent No. 2276786. 1 sheet of drawings PW 563/25 * 7.59)