Locking device intended to ensure safe access to cable box of electrical cabinet and electrical cabinet with such device

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering and is intended to ensure safe access to a cable box of an electrical cabinet. The cabinet comprises at least one electrical switch gear connected in series to earthing facilities of cables. At the side of the power supply line and the load side the cabinet is connected to at least one cable placed to the cable box comprising the rear panel, bottom panel, top panel separating the cable box from the compartment that includes the switch gear and the earthing facilities, two side panels and a door. The device comprises a body (11) that encloses a lock (12) and a counteractive lever (13). The body (11) is designed so that it is fixed at the inner side of a panel (21) of the cable box (3). The lock (12) interacts at one side with the door (4) and at the other side with a linkage system (17) for a door interlocking gear controlled by a shaft (7) of the earthing device so the that cable earthing command leads to unlocking of the door (4). The counteractive lever (13) interacts at one side with the door (4) and at the other side with the linkage system (24) for the purpose of locking a selector switch so that the movement of the selector switch (8) to the position, wherein opening or closure of the switch gear is ensured when the door is open, is prevented.

EFFECT: increased reliability and smaller size.

14 cl, 12 dwg

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: frontal unit (3) for an instrument holder (1) comprises a manual valve (5) arranged on the front panel of front unit control, pre-stressed and movable, mainly in parallel to the front panel of control for opening of a hole (9) providing access in order to set two or more positions of the instrument holder (1) connection. According to the invention, the front unit (3) comprises a handle (4) for actuation of the main switch (20) of the instrument holder (1). In the front unit (3) there is a locking device (8) for mutual blocking of the manual valve (5) and the main switch (20).

EFFECT: simplified design with preservation of safety.

15 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: locking device comprises a control panel with a plug to control capacity and a body of an automatic circuit breaker comprising a connector for capacity control for connection with the possibility of plus disconnection for capacity control, leads for voltage and current acceptance, a frame installed on the control panel and comprising leads connected or disconnected with leads of the automatic circuit breaker body, a carriage comprising the automatic circuit breaker body and installed as capable of sliding along the frame, a limiting unit of the carriage, which comprises a link made as capable of displacement up and down along the insertion direction or plug disconnection to control capacity, and a locking plate connected with the link for interaction with it and configured to restrict displacement of the carriage or to remove the restricted position of the carriage as it displaces in the direction perpendicular to the direction of carriage displacement.

EFFECT: prevention of plug disconnection from a connector as a circuit breaker body moves in a working position from a control position or as work is done in a working position, which helps to prevent an accident.

14 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: blocking device (8) for an instrument carrier (1), in particular, for a pull-put instrument unit (1) is designed for installation in a pull-out compartment of a cabinet of a cubicle switchboard (100). It comprises the main breaker (15) controlled by means of a handle (3) on a face panel (16) of the instrument carrier (1). In the area of the face panel (16) there is a hole of access (9) to a plug connector of an actuating tool for setting of two or more switching positions of the instrument carrier (1). A locking plate (61) is designed to convert rotary motion of the handle (3) and a contact axis (12) of the main breaker (15) connected with it in rectilinear motion. A manual handle (5) arranged on the face panel (16) as spring-loaded and moved in parallel to the face panel (16) in the off position locks an access hole (9). In accordance with the invention a locking plate (61) comprises a slider (6) of the main breaker, which is installed coaxially with the manual handle (5), so that the manual handle (5) with the main breaker (15) switched on may not move to the open position, and the main breaker (15) may not be switched on in the open position of the manual handle (5).

EFFECT: simplified design and higher safety.

14 cl, 9 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed switchgear cubicle incorporating equipment compartment accommodating plurality of power switches arranged one on top of other has junction compartment accessible from front end and disposed on one side close to equipment compartment. Junction compartment accommodates parallel buses with terminal strips for connecting plurality of cables. Inclined position of at least some buses facilitates cable connection. Easy access to junction compartment from its front end makes it possible to install switchgear cubicle directly in front of wall. Great number of cables can be connected in comparatively narrow junction compartment.

EFFECT: reduced size of cubicle, easy access to junction compartment for inspecting terminal strips.

7 cl, 2 dwg

The invention relates to the field of electrical engineering and for the design of high-voltage switchgear (KRU)

Percussion tool // 2520246

FIELD: process engineering.

SUBSTANCE: proposed tool has motor, case, handle damping material, manual working element mode selector, movable element and resilient element. Damping material is arranged between case and handle to connect them so that both can displace relative to each other in axial direction of bit. Manual working element is driven by motor, arranged at said handle and shifted from ON position to OFF position. Mode selector is arranged and tool case to select between first mode whereat said bit is continuously operated and second mode whereat it is driven selectively. Movable element can shift said bit with the help of said mode selector. Resilient element is arranged at vibration transfer path. Said resilient element prevents vibration transfer to handle with mode selector at first ON mode and locks the working element at movable element IN position.

EFFECT: damped vibrations at hand-held tool with bit mode selection.

13 cl, 16 dwg

FIELD: electricity.

SUBSTANCE: application: in the field of electrical engineering. A blocking device (1) is arranged between side walls (2c, 3b) facing each other of accordingly the first (Sw-sx) and second (Sw-dx) switches and comprises the first (15) and second (16) secondary control elements, arranged as capable of working displacement in according holes (10, 11) on side walls (2c, 3b) facing each other of the first (Sw-sx) and second (Sw-dx) switches. Side location of the blocking device and its ability to influence the switch at the side makes it possible to apply front arrangement of additional accessories for switches, at the same time the blocking device may be arranged with reduced dimensions by thickness inside an electrical panel, of quite convenient design, both with regard of used components and operation itself.

EFFECT: simplification of design and improvement of reliability.

21 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: invention relates to a low-voltage electric device comprising at least two contactors and mounted on a latch. Each contactor comprises a base (11, 21), installed above a fixture (12, 22), an upper cover (4) and a sliding part (13, 23), which retains contacts and is installed in the base (11, 21) as capable of reciprocal displacement. Two contactors are arranged in parallel, and both have one mechanical mutual interlock, which comprises an element (3) of mutual interlock. A shaft of the mutual interlock element (3) may rotate in a slot of the base (11, 21). By rocking the mutual interlock element (3), a ledge of the mutual interlock element (3) extends into an aperture of interlock that retains the contacts of the sliding part, thus preventing a connecting action of the sliding part that retains the contacts.

EFFECT: invention makes it possible to independently use or combine two and more contactors into a group with provision of reciprocal mutual interlock.

10 cl, 6 dwg

FIELD: electricity.

SUBSTANCE: device comprises vacuum arc-quenching chambers and an electromagnetic drive, a movable anchor of which is fixedly connected to a level, which is mechanically connected to movable contacts of arc-quenching chambers so that whenever contacts of the first arc-quenching chamber are open, contacts of the second arc-quenching chamber are closed, and vice versa, when contacts of the first arc-quenching chamber are closed, contacts of the second arc-quenching chamber are open. Fixed contacts of each pair of arc-quenching chambers are fixed on current-carrying buses at different sides of an insulation panel. Movable contacts of vacuum arc-quenching chambers are mechanically connected with a lever of a drive as capable of their displacement relative to the lever towards the side of closing with fixed contacts in the connected position of the electromagnet. All simultaneously connected movable contacts are electrically connected with one current-carrying bus with a terminal, which is connected with one phase of a power supply source, and all simultaneously open movable contacts are connected with the second current-carrying bus with a terminal, which is connected with the second phase of the power supply source. At the same time the insulation panel is mechanically connected to the base, where a drive electromagnet is fixed.

EFFECT: simplification of design and improved reliability of the device.

2 dwg

FIELD: electricity.

SUBSTANCE: invention is related to mechanism of blocking (1) for prevention of energy accumulator discharge in switch in area of electric distribution of energy with key switch (2), which in position of blocking mechanism (1) unblocking is connected by means of element of force transfer (4) via geometric closure to discharge triggering device (10) for discharge of energy accumulator, so that connecting motion acting at switch (2) is introduced through element of force transfer (4) into discharge triggering device (10). Element of force transfer (4) is connected to facilities for interruption of geometric closure (9, 17), arranged with the possibility of blocking mechanism changeover (1) into blocking position, in which geometric closure is eliminated. Key switch (2) and element of force transfer (4) in unblocking position are directed movably in common longitudinal direction, so that pushing motion of key switch (2) via longitudinal motion of force transfer element (4) is introduced into triggering device (10). Force transfer element (4) is installed as swinging so that in position of blocking direction of force transfer element (4) motion is oriented at the angle to pushing motion of key switch (2), besides facilities for interruption of geometric closure (9, 17) are connected to drive shaft (11) of switch and/or with auxiliary switch.

EFFECT: improved compactness and reliability of blocking mechanism operation.

5 cl, 3 dwg

Interlocking device // 2310251

FIELD: electrical engineering; interlocking mechanisms; controlling electric circuits in stand-by power input systems.

SUBSTANCE: proposed mechanical circuit-breaker interlocking device has plate, bracket installed in center of plate with intermediate-size rocker-arm and two small-size ones hinged thereto, small-size rocker-arms being axle-mounted below intermediate-size one symmetrically to its fixation axis. Each rocker-arm has slits on its opposite ends with downward directed stops disposed in their bases and, consequently, in those of rocker-arms. Stops provided on opposite ends of rocker-arms are disposed at different sides of its axial line. Stops made on opposite ends of rocker-arm are likewise disposed at different sides of its axial line. Plate and bracket are provided with holes to pass stops though them and to provide their interaction with pushers and through the latter, with circuit-breaker power contacts, respectively. Intermediate-size rocker-arm stops are longer than small rocker-arms by displacement distance of respective rocker-arm fixation axes.

EFFECT: enlarged functional capabilities and application range of mechanical interlocking device, reduced size and simplified design of interlocking system.

1 cl, 6 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed device that can be used to control dual-speed electric motors as well as to connect power loads in series with power supply or to function as phase-sequence change-over apparatus has two vacuum chambers. Second-chamber movable contact is mechanically joined with lever so that when first-chamber contacts are open, those of second vacuum chamber are closed and vice versa, when first-chamber contacts are closed, second-chamber ones are open. Device incorporated provision for reliable interlocking of its contacts to prevent throwing of two loads onto full voltage at a time.

EFFECT: enhanced reliability and minimized time interval between on-operation of one load and off-operations of other load.

5 cl, 3 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed device that can be used to control dual-speed electric motors as well as to connect power loads in series with power supply or to function as phase-sequence change-over apparatus has two vacuum chambers. Second-chamber movable contact is mechanically joined with lever so that when first-chamber contacts are open, those of second vacuum chamber are closed and vice versa, when first-chamber contacts are closed, second-chamber ones are open. Device incorporated provision for reliable interlocking of its contacts to prevent throwing of two loads onto full voltage at a time.

EFFECT: enhanced reliability and minimized time interval between on-operation of one load and off-operations of other load.

5 cl, 3 dwg

Interlocking device // 2310251

FIELD: electrical engineering; interlocking mechanisms; controlling electric circuits in stand-by power input systems.

SUBSTANCE: proposed mechanical circuit-breaker interlocking device has plate, bracket installed in center of plate with intermediate-size rocker-arm and two small-size ones hinged thereto, small-size rocker-arms being axle-mounted below intermediate-size one symmetrically to its fixation axis. Each rocker-arm has slits on its opposite ends with downward directed stops disposed in their bases and, consequently, in those of rocker-arms. Stops provided on opposite ends of rocker-arms are disposed at different sides of its axial line. Stops made on opposite ends of rocker-arm are likewise disposed at different sides of its axial line. Plate and bracket are provided with holes to pass stops though them and to provide their interaction with pushers and through the latter, with circuit-breaker power contacts, respectively. Intermediate-size rocker-arm stops are longer than small rocker-arms by displacement distance of respective rocker-arm fixation axes.

EFFECT: enlarged functional capabilities and application range of mechanical interlocking device, reduced size and simplified design of interlocking system.

1 cl, 6 dwg

FIELD: electricity.

SUBSTANCE: invention is related to mechanism of blocking (1) for prevention of energy accumulator discharge in switch in area of electric distribution of energy with key switch (2), which in position of blocking mechanism (1) unblocking is connected by means of element of force transfer (4) via geometric closure to discharge triggering device (10) for discharge of energy accumulator, so that connecting motion acting at switch (2) is introduced through element of force transfer (4) into discharge triggering device (10). Element of force transfer (4) is connected to facilities for interruption of geometric closure (9, 17), arranged with the possibility of blocking mechanism changeover (1) into blocking position, in which geometric closure is eliminated. Key switch (2) and element of force transfer (4) in unblocking position are directed movably in common longitudinal direction, so that pushing motion of key switch (2) via longitudinal motion of force transfer element (4) is introduced into triggering device (10). Force transfer element (4) is installed as swinging so that in position of blocking direction of force transfer element (4) motion is oriented at the angle to pushing motion of key switch (2), besides facilities for interruption of geometric closure (9, 17) are connected to drive shaft (11) of switch and/or with auxiliary switch.

EFFECT: improved compactness and reliability of blocking mechanism operation.

5 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: device comprises vacuum arc-quenching chambers and an electromagnetic drive, a movable anchor of which is fixedly connected to a level, which is mechanically connected to movable contacts of arc-quenching chambers so that whenever contacts of the first arc-quenching chamber are open, contacts of the second arc-quenching chamber are closed, and vice versa, when contacts of the first arc-quenching chamber are closed, contacts of the second arc-quenching chamber are open. Fixed contacts of each pair of arc-quenching chambers are fixed on current-carrying buses at different sides of an insulation panel. Movable contacts of vacuum arc-quenching chambers are mechanically connected with a lever of a drive as capable of their displacement relative to the lever towards the side of closing with fixed contacts in the connected position of the electromagnet. All simultaneously connected movable contacts are electrically connected with one current-carrying bus with a terminal, which is connected with one phase of a power supply source, and all simultaneously open movable contacts are connected with the second current-carrying bus with a terminal, which is connected with the second phase of the power supply source. At the same time the insulation panel is mechanically connected to the base, where a drive electromagnet is fixed.

EFFECT: simplification of design and improved reliability of the device.

2 dwg

FIELD: electricity.

SUBSTANCE: invention relates to a low-voltage electric device comprising at least two contactors and mounted on a latch. Each contactor comprises a base (11, 21), installed above a fixture (12, 22), an upper cover (4) and a sliding part (13, 23), which retains contacts and is installed in the base (11, 21) as capable of reciprocal displacement. Two contactors are arranged in parallel, and both have one mechanical mutual interlock, which comprises an element (3) of mutual interlock. A shaft of the mutual interlock element (3) may rotate in a slot of the base (11, 21). By rocking the mutual interlock element (3), a ledge of the mutual interlock element (3) extends into an aperture of interlock that retains the contacts of the sliding part, thus preventing a connecting action of the sliding part that retains the contacts.

EFFECT: invention makes it possible to independently use or combine two and more contactors into a group with provision of reciprocal mutual interlock.

10 cl, 6 dwg

FIELD: electricity.

SUBSTANCE: application: in the field of electrical engineering. A blocking device (1) is arranged between side walls (2c, 3b) facing each other of accordingly the first (Sw-sx) and second (Sw-dx) switches and comprises the first (15) and second (16) secondary control elements, arranged as capable of working displacement in according holes (10, 11) on side walls (2c, 3b) facing each other of the first (Sw-sx) and second (Sw-dx) switches. Side location of the blocking device and its ability to influence the switch at the side makes it possible to apply front arrangement of additional accessories for switches, at the same time the blocking device may be arranged with reduced dimensions by thickness inside an electrical panel, of quite convenient design, both with regard of used components and operation itself.

EFFECT: simplification of design and improvement of reliability.

21 cl, 9 dwg

Percussion tool // 2520246

FIELD: process engineering.

SUBSTANCE: proposed tool has motor, case, handle damping material, manual working element mode selector, movable element and resilient element. Damping material is arranged between case and handle to connect them so that both can displace relative to each other in axial direction of bit. Manual working element is driven by motor, arranged at said handle and shifted from ON position to OFF position. Mode selector is arranged and tool case to select between first mode whereat said bit is continuously operated and second mode whereat it is driven selectively. Movable element can shift said bit with the help of said mode selector. Resilient element is arranged at vibration transfer path. Said resilient element prevents vibration transfer to handle with mode selector at first ON mode and locks the working element at movable element IN position.

EFFECT: damped vibrations at hand-held tool with bit mode selection.

13 cl, 16 dwg

FIELD: construction.

SUBSTANCE: mechanism (1) of mutual blocking of the first and second low-voltage switching devices (200, 200'), each of which comprises the following components is proposed: movable contact portion, fixed contact portion and execution unit for driving the movable contact portion in the direction and performing the connection / disconnection with the stationary contact portion. Mechanism of mutual blocking comprises: the first slider (10), located on the first case (2) and connected to the actuator unit of the first switching device, the second slider (10'), disposed on the second case (2') and connected to the actuator unit of the second switching device, at that the sliding plane (P) has X- and Y-axis, Y-axis is defined in the direction of movement of the actuator unit of the switching devices, besides each of the sliders slides in the direction of Y-axis of sliding plane (P), axis (30) disposed between the first and second cases, and cam (40) with possibility of rotation around the axis (30), when both switching devices are in the open positions. Cam also includes the first and second blocking element (42, 42') for blocking the first and second sliders, respectively, which extend laterally in X-axis direction. Each of the sliders has opening (12, 12') on one end of slider for retaining the blocking element, when the respective switching device is in the closed position.

EFFECT: reliable and compact blocking.

11 cl, 15 dwg

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