摘要:
The invention relates to a triggering mechanism for a switching device, in particular for low-voltage devices and systems, medium-voltage devices and systems, and/or high-voltage devices and systems, the lever being equipped with two rolls for blocking purposes.
摘要:
The invention relates to a latching mechanism for locking a spring energy store (1) of an electric switching device, said store being tensioned by a rotary drive (10 and 11) and an extensible lever system (2, 3 and 4). In said latching mechanism, the extensible lever system is locked with the spring energy store under tension by means of a support element (12), an auxiliary lock (14) and a primary lock (16), in addition to a stop (17) that is allocated to the primary lock (16), whereby the auxiliary lock (14) can be pivoted by the extension of the lever system and the position of the primary lock (16) during the pivoting of the auxiliary lock (14) can be influenced by working surfaces that are allocated to one another. To configure the locking mechanism for pivoting the primary lock (16) in a manner which obviates the use of a return spring that acts on said primary lock, the auxiliary lock (14) and the primary lock (16) respectively have at least two working surfaces (24, 25 and 26, 27). In a first pivoting phase of the auxiliary lock, the respective first surfaces of the two sets of working surfaces (24 and 26) lie adjacent to one another and in a second pivoting phase of the auxiliary lock, the second working surfaces (25 and 27) lie adjacent to one another, intermeshing in the manner of a toothed gear.
摘要:
The invention relates to a low-voltage power switch with an actuating shaft for actuating switching contacts. The actuating shaft consists of a centre shaft with radially extending levers which can be connected to switching contacts or a drive unit. At least one section of the centre shaft (2) and one part of the levers (3) are produced as a single-piece actuating shaft unit according to a metal casting process. Preferably, the pressure casting process involves the use of aluminium or zinc alloys.
摘要:
A tensioner for a spring-loading device (12) of a power switch comprises a pivoting hand lever (46) and a ratchet wheel (47) which can be rotated in steps by a transport pawl (50) and prevented from rotating backwards by a locking pawl (52). A cam disc (13) acting on the spring (12) can be rotated by the ratchet wheel (47). A catch (61) on the cam disc (13) and a projection (64) on the set-back edge (63) of the cam disc (13) control a device for interrupting the transmission of force from the hand lever (46) to the ratchet wheel (47) once the spring (12) is fully tensioned.
摘要:
An arrangement for mutually locking the actuation of at least two power switches (A, B, C) has for each power switch (A, B, C) a position indicator (7) and an evaluation apparatus (10). A carrying plate (6) that receives the position indicator (7) and the evaluation apparatus (10) is associated to one side wall of the power switch (A, B, C). When the carrying plate (6) is mounted on the power switches (A, B, C) or on a rack (26), a shaft coupling (30) and a driving coupling (31) ensure the connection with a switching or controlling shaft of a device (32) that releases or lock the actuation of the power switches (A, B, C).
摘要:
A tensioner for a spring-loading device (12) of a power switch comprises a pivoting hand lever (46) and a ratchet wheel (47) which can be rotated in steps by a transport pawl (50) and prevented from rotating backwards by a locking pawl (52). A cam disc (13) acting on the spring (12) can be rotated by the ratchet wheel (47). A catch (61) on the cam disc (13) and a projection (64) on the set-back edge (63) of the cam disc (13) control a device for interrupting the transmission of force from the hand lever (46) to the ratchet wheel (47) once the spring (12) is fully tensioned.
摘要:
The invention relates to the modification of a device having a simple structure for transmission of forces on a moving contact connecting bolt (7) of a contact system consisting of a moving contact and a further contact of a switching unit (1), having an at least partially flexible conductor element (12) which is provided for electrical connection of the moving contact connecting bolt (7) to a connection of the switching unit (1) and has at least one first branch (14) and a second branch (16), which branches are arranged for reciprocal current flow in order thus to generate an electromagnetic force, the first branch (14) being disposed stationary in a housing (5) of the switching unit (1). According to the invention the second branch (16) is guided along and retained on a support plate (17) firmly connected to the moving contact connecting bolt (7) in such a way that an electromagnetic force occurring in a short-circuit can be introduced between the first branch (14) and the second branch (16) for increasing a contact pressure exerted by a contact pressure spring in the moving contact connecting bolt (7), the support plate (15) being guided so as to be slidably movable in the housing (5) of the switching unit (1).
摘要:
The invention relates to a switching device (1) comprising a locking device (11) and a travelling device (12) for inserting and retracting with regard to a rack frame (8) with which said devices can only be actuated when the switching device (1) is in a non-operating state. A blocking bar (14) is guided behind an operating console (3) of the switching device (1) by means of longitudinal holes (26, 28). Said blocking bar comprises a cam element (21) which interacts with a carrier (22) of a disconnecting actuator (15). The carrier (22) and the cam element (21) interact in such a way that when the blocking bar (14) is actuated, the disconnecting actuator (15) is pulled inward and, as a result, the blocking of the switching device (1) in the non-operating state is signaled to the user.
摘要:
The invention relates to a low-voltage circuit breaker with a retrofitted power-driven lift, whereby the output shaft thereof can be coupled to the charging shaft of the spring energy store of the low-voltage circuit breaker and said charging shaft is mounted in a bearing block. Centering elements (9) are provided on one flange of the bearing block (11) of the charging shaft (12) of the spring energy store and engage with counter elements (10) on the output side of the gear of the power-driven elevator (5) in such a way that the lift can extend axially with only a limited amount of travel in the direction of the charging shaft (12). In order to arrest the power-driven lift (5) in a pivoting direction, a fixing element is provided at a point located at a certain distance from the centre, in addition to means enabling the power-driven lift (5) to be fixed in an axial position in the centering elements (9) of the flange of the bearing block (11) of the charging shaft (12) of the lift of the spring and in the coupling (8) of the charging shaft (12).