32results about "Switchgear shutters/guards" patented technology

This invention provides a driving device for a centrally located switchgear valve baffle, comprising an actuating mechanism, an active mechanism, a transmission mechanism, and a guiding mechanism. The actuating mechanism is located on the lower front side of the switchgear truck for the operator to apply force to drive the switchgear truck into the trolley compartment. The active mechanism is located on the left and right rear sides of the switchgear truck for applying force to the transmission mechanism during the movement of the switchgear truck into the trolley compartment. The transmission mechanism includes an upper transmission mechanism and a lower transmission mechanism located on the left and right side plates of the trolley compartment. The upper and lower transmission mechanisms are adapted to drive the upper and lower valve baffles respectively to open under the force applied by the active mechanism, thereby exposing the high-voltage stationary contacts. The guiding mechanism is located on the rear side plate of the trolley compartment for vertically guiding the movement of the upper and lower valve baffles. This application features a clever and simple structural design that can simultaneously drive both sides of the valve baffle, making the opening and closing action of the valve baffle more flexible, stable, and reliable, effectively avoiding valve baffle jamming.

The invention discloses a high-voltage metal-enclosed switchgear which comprises a cabinet body made of metal plates, the interior of the cabinet body is divided into a bus chamber for placing buses, a circuit breaker chamber for placing circuit breakers and a cable chamber for placing cables from top to bottom, and a vertical public pressure relief channel is arranged on the right side of the cabinet body. The center line of each corresponding upper contact box and the center line of each corresponding lower contact box are located on the same vertical axis, an upper contact arm and a lower contact arm of the circuit breaker are also located on the vertical axis and stretch out and draw back up and down, and the upper contact arm and the lower contact arm penetrate through the upper valve and the lower valve respectively. And the upper static contact and the lower static contact are respectively connected to form a conductive loop. According to the invention, the size is greatly reduced, the manufacturing cost is reduced, the current-carrying capability is improved, the discharge of the contact arm to the ground and air is effectively prevented, and the safety is better ensured.

A hinge-protected main circuit connector for unit compartment incoming lines, and a unit assembly. The main circuit connector comprises: an insulating housing, the front end of which is provided with a front socket; and a hinge protection structure, which is mounted at the front end of the insulating housing and closes the front socket. When a copper bar of a unit main circuit moving connector is inserted into hinges, the hinges are driven to open; and when the unit main circuit moving connector is withdrawn, the hinges automatically close. The hinge-protected main circuit connector for unit compartment incoming lines is applied to an incoming line side of a unit compartment, thereby enabling the protection level of the unit compartment incoming lines to be improved.

The invention discloses a high-voltage switch cabinet convenient for handcart maintenance, which belongs to the technical field of switch cabinets and comprises a switch cabinet body, a movable handcart is arranged in a handcart chamber in the switch cabinet body, a static contact is fixed on the inner wall of the handcart chamber, and a moving contact is arranged on the handcart at a position corresponding to the static contact; the closing driving unit is arranged in the handcart chamber in a sliding manner; the polishing unit is rotationally mounted in the handcart chamber and is in sliding connection with the moving contact; and the rotating unit is rotationally connected to the end part of the polishing unit and rotationally connected with the surface of the static contact. By arranging the polishing unit and the rotating unit, the moving contact and the static contact can be automatically polished and cleaned in the switching-on process of the handcart, oxide layers and impurities on the surfaces of the contacts are removed, contact resistance is reduced, contact heating faults are reduced, and the service life of a switch cabinet is prolonged; by arranging the buffer unit, the rigid collision between the moving contact and the static contact can be avoided, the stability of the contact pressure of the contacts is maintained, and the reliability of circuit conduction is improved.

Locking device (100) for a switchgear compartment (599) with a circuit breaker (999), wherein the locking device (100) comprises a main locking lever (200) which can be in at least one locking position and in a trip prevention position, characterized in that the main locking lever (200) comprises at least two legs (210; 220), wherein the first leg (210) in the locking position blocks the transition of the locking device (100) to the trip prevention position if the circuit breaker (999) is in the OFF position, and wherein the second leg (220) in the switch-off prevention position blocks the transition of the circuit breaker (999) to the OFF position.

The utility model discloses a door interlocking device which comprises an interlocking rod, one end of the interlocking rod is provided with a hook portion used for locking the closing state of a handcart chamber door, and the handcart chamber door is provided with an interlocking bolt used for being connected with the hook portion in a clamped mode. The other end of the interlocking rod is arranged to be a transmission end used for being connected with a valve mechanism in a handcart chamber in a transmission mode, and an interlocking axis used for being fixedly connected with the handcart chamber is arranged in the middle of the interlocking rod in a hinged mode. According to the utility model, a linkage structure of the interlocking rod and the valve mechanism is arranged, when the handcart chamber door is operated to be closed to enable the handcart to be rocked into a working position, the handcart chamber door is synchronously locked through the interlocking rod, so that an operator cannot open the handcart chamber door without additional active locking operation of the operator, and the electrical five-prevention requirement is met.

A locking mechanism (20) for a control center (100) comprises a locking cover (8) attached to a partition plate (7) that separates a busbar chamber (5) from a functional unit chamber (4) in which a functional unit (1) to be mounted is arranged for the control center.The closure cover (8) has a front projection (9) on its base, which projects forward in a forward direction, wherein the functional unit (1) has a spacer (11) on its base surface and, when the functional unit (1) is inserted into the functional unit chamber (4), the front projection (9) of the closure cover (8) is pressed by the spacer (11) provided on the functional unit (1) such that the closure cover (8) moves in a latching manner to open simultaneously with the insertion of the functional unit, thereby enabling a connection between the busbar (6) and a terminal (2) of the functional unit (1).

The utility model provides a drawer type switch cabinet protection device which is applied to a drawer type switch cabinet, a top plate of the drawer type switch cabinet is provided with an opening, and the protection device comprises a cover plate, a telescopic mechanism, a flexible pipe, a sensor and a controller; the cover plate is positioned above the opening; the outer contour of the cover plate is larger than the aperture of the opening; one end of the telescopic mechanism telescopic assembly is connected with the cover plate, and the other end is connected with the top plate; the flexible pipe is arranged between the cover plate and the top plate and is buckled in the opening; a plurality of through holes are formed in the side wall of the flexible pipe; the sensor is used for detecting whether a target exists around the top plate; and the controller is electrically connected with the telescopic mechanism and the sensor. According to the scheme, the flexible pipe with the cover opened with the hole is arranged, and the through hole is formed in the flexible pipe, so that when the sensor detects that a target object exists around the top plate, the flexible pipe can be driven to contract through the telescopic mechanism, the actual hole diameter of the through hole is reduced, and the target object is prevented from entering the drawer type switch cabinet. Therefore, the working reliability of the drawer type switch cabinet can be improved.

A protective barrier system is provided to control access to conductors of a bus system of a distribution board. The system includes an electrically insulating or non-conductive barrier for preventing access to conductors of the bus system. The barrier may include a plurality of removable baffles arranged side-by-side on the open side of the bus system to prevent installation of circuit breakers on conductors of the bus system and provide touch / finger safety protection. The system also includes a barrier interlock for the bus system. The barrier interlock may include a lock for the shutter. The lock is operable between a locked position and an unlocked position. The lock locks the shutter in the locked position to prevent the shutter from being removed, or unlocks or releases the shutter in the unlocked position, thereby enabling removal of the shutter and connection of the circuit breaker to the conductor of the bus system.

The utility model belongs to the technical field of switch cabinets, and discloses a fuse handcart and a switch cabinet. The fuse handcart comprises a box body, wherein a first insulator, a lightning arrester, a second insulator and a discharge counter are sequentially arranged on the box body from top to bottom at intervals; the first insulator is provided with a first contact arm, the second insulator is provided with a second contact arm, a fuse is arranged between the first contact arm and the second contact arm, one end of the lightning arrester is connected with the first contact arm, and the other end of the lightning arrester is conductively connected with the discharge counter. When the fuse handcart is designed, the first insulator and the second insulator are arranged at intervals and installed at corresponding positions of the box body, the lightning arrester is installed between the first insulator and the second insulator, and the discharge counter is arranged at a position, close to the bottom, of the box body. According to the fuse handcart, the mode that a box body is directly heightened at the top and a lightning arrester and a discharge counter are arranged at the top in the prior art is replaced, the overall fuse handcart box body is prevented from being too high, the structure is simple, arrangement is compact, and cost can be effectively reduced.

The invention relates to the technical field of circuit breaker auxiliary tools, in particular to a robot switch cabinet circuit breaker quick assembly and disassembly torque protection tool which comprises a rotation stopping base and a rotation stopping plate used for being installed on a cabinet body. The rear end of the torque limiting mechanism is rotatably connected with a tool sleeve, the tool sleeve is composed of a front section, a middle section and a rear section, threads are arranged on the inner circumferential face and the outer circumferential face of the front end of the front section of the tool sleeve, a square hole is formed in the rear end of the rear section of the tool sleeve, and the rear end of the tool sleeve is provided with a quick release mechanism used for being quickly connected with a circuit breaker. The front side of the rotation stopping seat is provided with a rotation stopping mechanism used for limiting the working state of the tool, and the torque limiting mechanism is arranged to limit the transmission torque value of the tool by controlling the friction force, so as to meet the requirements of higher operation speed and load change in the operation process of the handcart. And the problem of operation failure caused by torque control failure of the robot is further avoided.

The invention provides a rapid guiding and positioning assembly and a circuit breaker, and relates to the technical field of electrical equipment. The rapid guiding and positioning assembly comprises a mounting seat and a guiding shaft, a mounting hole is formed in the mounting seat, and a first guiding part is arranged in the mounting hole; a first guide part is arranged on the outer wall of the guide shaft, a second guide part is arranged on the outer wall of the guide shaft, in the process that the guide shaft is arranged in the mounting hole in a penetrating mode, the first guide part and the second guide part abut against each other and are in sliding fit, the guide shaft is arranged in the mounting hole to achieve the guide effect and the limiting effect, one of the first guide part and the second guide part is a guide protrusion, and the other one is a guide sliding groove; the safety door assembly is movably arranged on the guide shaft, so that the safety door assembly can keep a linear motion trail in the push-pull operation, rapid installation is achieved, and the clamping stagnation risk is reduced.

The invention discloses a low-voltage power distribution cabinet with a drawer pushing mechanism, and relates to the technical field of low-voltage power distribution cabinets. The low-voltage power distribution cabinet with the drawer pushing mechanism comprises a box body, a rotating wheel and a pulley, the rotating wheel is rotatably installed at the bottom of the box body, the pulley is rotatably installed on the inner wall of the box body, and the low-voltage power distribution cabinet further comprises a stabilizing device, a protection device and a lubricating device; when the power distribution cabinet is placed, the reset support drives the pushing block to extrude the trapezoidal block to enable the sliding rod to move, the moving sliding rod drives the friction plate to clamp the rotating wheel, and the rotating wheel is placed to roll. The power distribution pipe is prevented from sliding at the moment when the power distribution cabinet is in contact with the ground during placement, thereby being inconvenient for workers to operate.

This invention discloses a partitioned door drive structure and a high-voltage switchgear, belonging to the field of high-voltage switchgear. It includes a front cover and a rear cover, with a left bracket, a right bracket, and a drive shaft installed between them. A bevel gear is installed at one end of the drive shaft. A left drive screw and a right drive screw are also installed between the front and rear covers. A left threaded sleeve is installed on the left bracket and is fitted onto the left drive screw. A right threaded sleeve is installed on the right bracket and is fitted onto the right drive screw. During the door reset process, even if the door is subjected to significant force, the force in the direction of the threaded sleeve's movement will be offset by the drive screw, preventing the door from moving too quickly and ensuring greater safety and reliability. This solves the problem in existing high-voltage switchgear where the door opening and closing speed is too fast, easily injuring operators.

The present application relates to a kind of intelligent high-voltage switch cabinet valve linkage locking device, comprising: valve locking device and valve unlocking device, wherein valve locking device includes interlocking hook rotation component (A) and valve lifting hook head component (B), valve unlocking device includes middle door pressure plate component (C) and roller rotation component (D);The scheme adopts rotary tripping and pressure spring reset mechanism, and the interaction of the downward movement of circuit breaker chamber door pressure plate and the rotation of L-shaped plate driven by roller, and the connection of sheathed steel wire rope, realizes the reliable valve locking, simple unlocking, labor-saving, fast opening mechanism.

The invention discloses a primary and secondary fusion ring main unit, and belongs to the technical field of electrical equipment, the primary and secondary fusion ring main unit comprises splicing frames and electrical modules capable of being pulled out, a pull-out power-off mechanism is mounted between adjacent splicing frames, the pull-out power-off mechanism comprises two mounting frames which are oppositely arranged, the mounting frames are fixedly connected with the nearest electrical module, and the mounting frames are fixedly connected with the electrical modules. Each mounting rack is also provided with a connecting rod structure, one end of the connecting rod structure is provided with an opening and closing slide block, when the single mounting rack moves, the corresponding opening and closing slide block moves along with the connecting rod structure, and the attaching direction of the opposite electrical contacts is perpendicular to the moving direction of the mounting rack; the drawing power-off mechanism further comprises an insulating partition plate, the insulating partition plate is connected with the nearest mounting frame through two opposite reverse traction mechanisms and used for enabling the moving direction of the insulating partition plate to be opposite to the moving direction of the mounting frame, and one end of the insulating partition plate is flush with the attaching faces of the two opening and closing sliding blocks in the attaching process. According to the invention, power is cut off while the electrical module is pulled, so that the use safety is improved.

The application relates to a main circuit connection structure of a low-voltage complete equipment, a removable plug-in unit assembly and a unit. The main circuit connection structure comprises a main circuit connector, a circuit breaker and a mutual inductor. The phase-to-phase center of the wiring end of the main circuit connector of each phase on the incoming line side and the outgoing line side is arranged in correspondence with the phase-to-phase center of the corresponding phase of the circuit breaker. The mutual inductor of the B phase on the outgoing line side is sleeved on the main circuit connector of the corresponding phase. The wiring end of the main circuit connector of the B phase on the outgoing line side and the connecting point of the connecting conductive row are located in front of the mutual inductor. The beneficial effects are as follows: through the two innovative structures of the body reversing connection of the incoming line side main circuit connector and the lengthened sleeve mutual inductor of the outgoing line side B phase main circuit connector, the connection distance of the 630A and 400A circuit breakers is shortened to the limit of 88mm, the connection distance of the 250A and below is less than 88mm, the application of the mutual inductor arranged in the unit room with the depth of 300mm of the overall current unit is realized, 53.5% of copper is saved, and the depth of the cabinet is reduced by 200mm.

A scalable power tap off system is provided for a power distribution system. The system can have components including a line-side connector assembly for connecting to an upstream power supply, a load-side connector assembly for connecting to downstream load(s), and a draw-out circuit breaker assembly connected between the line-side and load-side connector assemblies. The system also includes a shutter assembly having a movable shutter for proving a barrier to prevent access to at least line-side electrical components on the breaker assembly when the breaker assembly is in the racked-out state, and insulated interconnect buses for electrically connecting the line-side connector assembly and the load- side connector assembly to the breaker assembly. An enclosed compartment is provided to house the load-side connector assembly in isolation from other components and allows access to the load-side connector assembly when the breaker assembly is in a racked-out state or the load-side connector assembly is de-energized.

A protective barrier system is provided to control access to conductor(s) of a bus system of an electrical panel. The system includes an electrically insulated or non-conductive barrier for preventing access to conductor(s) of the bus system. The barrier can include a plurality of removable shutters arranged side-by-side across an open-side of the bus system to prevent installation of a circuit breaker on the conductor(s) of the bus system and to provide touch-safe / finger-safe protection. The system also includes a barrier interlock for the bus system. The barrier interlock can include a lock for a shutter(s). The lock is operable between a locked and unlocked position. The lock locks the shutter(s) to prevent removal of the shutter(s) in the locked position, or unlocks or releases the shutter(s) in the unlocked position thereby enabling removal of the shutter(s) and connection of the breaker to the conductor(s) of the bus system.

A DC switchgear includes: an instrument compartment in which secondary components for monitoring, protecting and measuring are arranged; a busbar compartment in which a main busbar and a first fixed contact connected with the main busbar is arranged; a cable compartment in which a conductor is arranged for connecting to a cable, and a second fixed contact connected with the conductor is further arranged in the cable compartment or the busbar compartment; and a handcart compartment in which a handcart capable of moving in and out of the handcart compartment is arranged, wherein a current-carrying branch, a commutation branch and an energy-absorbing branch are arranged on the handcart, a first and a second movable contacts respectively for contacting with the first and the second fixed contacts are further arranged on the handcart, and the first and the second movable contacts are respectively connected to both ends of the current-carrying branch.

The application discloses a handcart type high-voltage switch cabinet, which comprises a cabinet body, a driving assembly and a baffle, the cabinet body is provided with a guide rod fixedly arranged thereon, a lifting shell is sleeved on the guide rod, a sliding plate is slidably arranged on the lifting shell, and the baffle is connected with the sliding plate; a rotating pin is rotatably arranged on the lifting shell, the rotating pin is provided with a spiral groove, a protruding block is fixedly arranged on the sliding plate, and the protruding block is slidably arranged in the spiral groove; the rotating pin is arranged, before the baffle slides upwards, the connecting shaft slides in the connecting hole, and the rotating pin is driven to rotate through the rotating pipe and the rotating ring; the sliding plate is driven to slide outward with the baffle through cooperation of the spiral groove and the protruding block, so that the baffle is separated from the shielding position, friction between the baffle and the cabinet body in the sliding process is avoided, then the lifting shell and the baffle are driven to move upwards through abutment between the connecting shaft and the top of the connecting hole, the static contact is exposed, the movable contact of the circuit breaker is facilitated to be inserted into the static contact, and operation portability is improved.

A kinematic linkage arrangement for a flap mechanism (200A) of a circuit breaker arrangement is disclosed. The kinematic linkage arrangement at least six members (208A, 210A, 214A, 216A, 224A and 228A) operably connected therebetween, such that one or more of the six members (208A, 210A, 214A, 216A, 224A and 228A) are operably connected to an upper flap (202A) and a lower flap (204A) of a flap mechanism for a circuit breaker arrangement, wherein the kinematic linkage arrangement, when operated causes the members (208A, 210A, 214A, 216A, 224A and 228A) to, provides and / or limit access to one or more of a busbar compartment via movement of the upper flap (202A), and a cable compartment of the circuit breaker arrangement via movement of the lower flap (204A), wherein the kinematic linkage arrangement is operably coupled to a breaker part (206A) associated with the circuit breaker arrangement.

The utility model belongs to the technical field of isolation handcarts, and discloses an isolation handcart. The isolation handcart comprises a handcart body and at least one loop mechanism, the loop mechanism comprises two insulators, an insulating cover and an electric loop structure, a first opening is formed in one side, close to the insulators, of the insulating cover, second openings are formed in the top wall and the bottom wall of the insulating cover, the two second openings are communicated with the first opening, and the two second openings are communicated with the electric loop structure. Two penetrating holes are formed in one side, close to the insulator, of the insulating cover; the electric loop structure comprises two contact assemblies and a conductive column, each contact assembly comprises a contact seat, a contact arm and a contact, the contact seat is located in the insulating cover, connected with the insulating cover in a clamped mode and fixed to the insulator, the contact arm penetrates through the penetrating hole and is fixedly connected with the contact seat, and the contact is fixed to the contact arm. According to the utility model, the contact area between the internal structure of the insulating cover and the air can be increased, the heat dissipation intensity is increased, and the situation that the contact cannot normally carry out switching-on and switching-off actions with the switch cabinet because the internal temperature of the insulating cover is too high is avoided.

The application discloses a handcart type load switch which comprises a chassis, a box body and six contact arms, the box body is internally provided with a mounting frame, the mounting frame is respectively provided with an energy storage closing mechanism, an energy storage opening mechanism and an opening keeping mechanism, the mounting frame comprises a left mounting plate and a right mounting plate, the box body is internally divided into a left mounting space, a middle mounting space and a right mounting space which are arranged in a transverse direction, the energy storage closing mechanism comprises a closing energy storage module, a closing execution module and a closing transmission module, a first transmission shaft is rotatably arranged on the right mounting plate, the energy storage opening mechanism comprises a connecting rod module, an opening energy storage module and an opening execution module, and the opening keeping mechanism is connected with the input end of the connecting rod module and the opening execution module in a linkage mode, and the handcart type load switch has a compact and reasonable internal structure, can reduce the internal space occupation of the load switch, and in particular can reduce the space occupation in the width direction.

The application discloses a high-voltage switch cabinet based on a modular structure, which has a cabinet body and an external pipe extending from the cabinet body, an instrument room, a handcart room, a busbar room and a cable room are arranged in the cabinet body, an instrument for measurement is arranged in the instrument room, a handcart is arranged in the handcart room, a contact box is arranged in the interior of the cabinet body, the upper contact box is connected with a busbar connecting piece through a busbar, the lower contact box is connected with a current-voltage transformer, a non-flat partition plate is arranged between the busbar room and the cable room, a handcart room cover plate, a busbar room cover plate and a cable room cover plate are arranged above the handcart room, the busbar room and the cable room respectively, a cover plate joint piece which is not integrated with the cover plate is arranged on the handcart room cover plate, the busbar room cover plate and the cable room cover plate, and the safety of the high-voltage switch cabinet is improved.

The utility model provides a drawer seat cover plate, which comprises a cover plate body, the cover plate body comprises a base top part used for being contacted with a circuit breaker and a base bottom part used for being connected with a drawer seat base, and the base top part is provided with an installation window used for connecting the circuit breaker with a contact inside a drawer seat. Sliding guide rails are arranged on the two sides of the installation window, an automatic closing isolation mechanism is arranged between the sliding guide rails, and the automatic closing isolation mechanism comprises an insulation baffle used for shielding the installation window and a driving assembly used for pushing the insulation baffle to slide along the sliding guide rails. According to the technical scheme, when the circuit breaker is replaced, the insulating baffle automatically shields an electrified part, prevents personnel contact, conforms to the safety standard, reduces dust or foreign matter entering, maintains cleaning and functions of internal parts, and further improves the safety by adopting the insulating baffle.

The invention discloses a switch cabinet and a circuit breaker double-valve mechanism thereof, and relates to the technical field of high-voltage switch equipment, the circuit breaker double-valve mechanism comprises a frame, a connecting rod module and two valve plates, the frame defines an accommodating space, and the frame defines an access port communicated with the accommodating space along one longitudinal side; the two valve plates extend in the transverse direction and are sequentially distributed in the vertical direction, and the two transverse ends of each valve plate are slidably connected with the two side walls of the containing space correspondingly; the connecting rod module comprises a connecting lever and a connecting rod assembly, the connecting lever is rotatably arranged on the bottom wall of the accommodating space, the connecting lever is connected with the two valve plates through the connecting rod assembly, and when the circuit breaker enters or exits from the accommodating space from the access, the connecting lever drives the two valve plates to move face to face or back to back along the vertical direction through the connecting rod assembly; therefore, mutual approaching or departing is correspondingly realized. The connecting rod assembly drives the two valve plates to move synchronously through the crank arm, so that the operation force in the circuit breaker swinging process is remarkably reduced, and more labor is saved.

The discussion relates to busbars that are protected from unintentional contact. One example includes a liquid immersion tank and a protected automatic busbar assembly positioned in the liquid immersion tank. The protected automatic busbar assembly can include a conductor and a deployable protector biased over the conductor. The example can include a computer that includes a device controller and an electrical connector. The device controller can be configured to overcome the bias and cause the deployable protector to transition away from the conductor to allow the conductor to be engaged by the electrical connector to couple the computer to the conductor of the protected automatic busbar assembly.