917results about "Switchgear with withdrawable carriage" patented technology

A racking device performs a circuit breaker racking operation. The racking device includes a base with wheels and a brake to facilitate moving the racking device and positioning it with respect to a switchgear cabinet. An elongated tubular member extends substantially vertically from the base. A self-contained counter-balanced power module includes an enclosure having a pair of opposing openings for receiving the elongated tubular member, and a counterweight system for counter-balancing the power module. An actuator including a motor, a ball spline and a torque member moves a linkage assembly having an end effector with a negator spring that positively engages the circuit breaker. A switch module actuates the actuator from a remote location in order to move the linkage assembly and thus the circuit breaker to perform the racking operation from the remote location. Complicated field programming of the power module is not required.

An electric power drawer cabinet device capable of pushing out under automatic control comprises a frame body (9) and a drawer assembly (8). Two sides of the lower portion of the drawer assembly (8) are provided with rollers (81) which are used for matching a transverse guide rail (92) at the lower side of an accommodating cavity (91), accommodating the drawer assembly (8), of the frame body (9), so that the drawer assembly (8) is allowed to be in and out of the accommodating cavity (91). A transverse batten (41) is disposed fixedly in the frame body (9) and at the lower side of the transverse guide rail (92). The transverse batten (41) carries a drive slider assembly (7). The drive slider assembly (7) comprises two support plates (731,732) disposed on left and right sides.

A door interlock assembly is for a draw-out circuit breaker assembly. A draw-out circuit breaker is housed within an enclosure including a door and includes a poleshaft operable between first and second positions corresponding to separable contacts being opened and closed, respectively. The door interlock assembly includes a pivot member coupled to the poleshaft and a door latch interconnected to the pivot member by a linkage, such as a threaded drive rod. The door latch pivots such that a first end thereof engages and locks the door of the enclosure when the poleshaft moves to the second position. An optional mechanical sensor assembly adapted to trip the circuit breaker when the door is positioned in any position other than closed, is also disclosed.

A switching device having a frame, in which an actuator adapted to rotate a main shaft of the switching device and rotatable around an axis of rotation, the actuator having a 0 position, an I position and a first dead point between the 0 position and the I position, the I position being located by a given angle (α₆) in a first direction relative to the 0 position. The actuator also has a testing position, the testing position being located by a predetermined angle (β₆) in a second direction relative to the 0 position, the second direction being opposite relative to the first direction.

Disclosed is a control terminal automatic connection apparatus for an air circuit breaker and an air circuit breaker having the same, the apparatus comprising: a cam, a lever having one end portion that can be connected to the cam or separated from the cam and rotatable by the rotation driving force transferred from the cam when connected to the cam, a rod connected to the lever and thus movable in a vertical direction according to the rotation of the lever, a fixed control terminal module fixedly installed at the main body, and a movable control terminal module installed at the cradle and movable to a position for being connected to the fixed control terminal module of the main body and a position for being disconnected therefrom.

A switch assembly for an electrical panel configured to receive electrical power from either a first power supply or a second power supply. The switch assembly includes a transfer switch operable to electrically connect the panel to receive electrical power from the second power supply when power is interrupted from first power supply. An indicator light at the panel illuminates so as indicate that electrical power from the first electrical power supply is restored while the transfer switch is positioned to receive electrical power from the second electrical power supply. A light switch is connected to selectively interrupt illumination of the indicator light. An interlock member interconnects the light switch and the transfer switch so that movement of the interlock member to connect the electrical panel to receive electrical power from the first power supply simultaneously moves the light switch so as to interrupt illumination of the indicator light.

A disconnect mechanism for an electrical system that is integrated with the enclosure of the system, yet includes an external handle for closing and opening the electrical circuit. The invention utilizes the system's circuit breaker to switch the current on or off, eliminating the need for a separate external disconnect. Moving parts are limited to an external actuating handle connected by a shaft to an actuating arm, which has an opening whose inner edges press against a pin connected to the circuit breaker to trigger its movement between the on and off positions. Automatic tripping of the circuit breaker during a system overload moves the external handle to the off position, furnishing visual evidence of the systems working status. A watertight seal maintains the integrity of the electrical system's enclosure.

The invention relates to the technical field of electrical power system equipment, in particular to an intelligent medium voltage switch cabinet. The intelligent medium voltage switch cabinet comprises a closed metal cabinet body. A handcart chamber, a bus chamber, a cable chamber and a meter chamber are arranged in the cabinet body in a separated mode. An intelligent disconnector is arranged in the handcart chamber. The intelligent disconnector comprises a control box, a three-phase moving contact and an electric chassis truck. A mechanical property on-line monitoring device, a disconnector control loop parameter measurement device and an intelligent control module are arranged in the control box. A communication interface connected with the intelligent control module is arranged on the upper portion of the control box. An intelligent module data acquisition device connected with the communication interface is arranged in the meter chamber. The intelligent medium voltage switch cabinet has the functions of intelligent monitoring, intelligent diagnosis and intelligent control, and is compact in structure, good in mechanical performance and electrical performance, and safe and reliable in operation.

A portable, remote racking device that is controlled by a remote control. The remote racking device includes a drive that fits into a corresponding crank access hole formed in a front panel of a cradle housing a circuit breaker installed into a switchgear. The drive turns a mechanism inside the cradle that causes the circuit breaker to be racked into or out of the switchgear. The remote racking device includes an actuator pin that abuts a corresponding button arm protruding through the front panel. The remote control includes a control for depressing the button arm and another control for causing a motor to rotate the drive. The actuator pin detects when the button arm pops out of the panel, and a circuit in the remote racking device briefly reverses the motor to bring it and the circuit breaker to a sudden stop, preventing the mechanical linkages of the mechanism from locking-up or becoming damaged and avoiding over-torquing the motor.

The invention discloses a drawer type electric control cabinet assembly. The drawer type electric control cabinet assembly comprises a control cabinet part (1), a drawer pushing-out part (5) and a ground foot (25) fixed to a floor, wherein the control cabinet part (1) and the drawer pushing-out part (5) are fixedly connected together, multiple electric control drawer boxes (2) are arranged in the control cabinet part (1) with one above another, the drawer pushing-out part (5) is used for pushing out the electric control drawer boxes (2) in the control cabinet part (1) and comprises a supporting body, a lifting driving part, a pushing-out driving part and a locking driving part, the lifting driving part comprises a lifting motor (4), a lifting driving screw (16) and a guiding rod (15), and the lifting motor (4) is connected with the upper end of the lifting driving screw (16) and is used for driving the lifting driving screw (16) to rotate.

The invention discloses a drawer type power cabinet which comprises a cabinet body (1). A first cavity (11) and a second cavity (12) are arranged in the cabinet body (1). A horizontally moving frame (2) is arranged in the first cavity (11). A first projection (21) is arranged at the top of the horizontally moving frame (2). A guide rod (211) runs through the first projection (21) and extends in horizontal direction. A second projection (22) is arranged at the bottom of the horizontally moving frame (2). A horizontal drive screw (221) runs through the second projection (22) and extends in horizontal direction. One end of the horizontal drive screw (221) in extending direction is in rotatable matched connection with a drive mechanism, and the other end is in rotatable matched connection with the inner wall of the cabinet body (1). A first recess (23) and a first telescopic drive device (25) are arranged in the horizontally moving frame (2). The drawer type power cabinet provided by the invention has the advantages of easy maintenance, stable operation and high safety, and prevents people from mistaken touching.

The invention discloses a side line outgoing type vacuum post terminal which comprises an insulation barrel with a vacuum arc-extinguishing chamber inside, an upper line outgoing conductor and a lower line outgoing conductor. The upper line outgoing conductor and the lower line outgoing conductor are electrically connected with the vacuum arc-extinguishing chamber respectively. The upper line outgoing conductor is arranged in the axial direction of the insulation barrel. The lower line outgoing conductor comprises an inclined section and a vertical section, wherein the inclined section keeps an included angle with the axial direction of the insulation barrel, and the vertical section is parallel to the axial direction of the insulation barrel. The high-medium pressure side outgoing type vacuum post terminal is simple in overall structure and safe and reliable in operation, the arrangement way of the lower line outgoing conductor is changed, the overall size is smaller so that the side line outgoing type vacuum post terminal can be applicable to a side-mounted circuit breaker, meanwhile, handcart operation can be achieved, and the advantages of the side-mounted circuit breaker are brought into full play.

The invention discloses a central high pressure cabinet handcart transfer trolley, which comprises a door-shaped frame; a tray is mounted in the door-shaped frame; a travelling mechanism is arranged at the bottom of the door-shaped frame; a suspension mechanism is mounted at the top of the door-shaped frame; and a lifting mechanism is mounted at one side of the door-shaped frame. The structure performance and the function of the transfer trolley are improved and expanded.

The invention relates to a safe cabinet-split type switch cabinet and a using method thereof. The safe cabinet-split type switch cabinet comprises a cabinet body. The cabinet body is internally provided with a plurality of independent drawer units. Each drawer unit is provided with a plurality of wiring interfaces. Grooves for wires to be installed are formed in the side wall of the cabinet body. A plurality of fans are arranged on the side wall of the cabinet body. A fire extinguisher is arranged outside the side wall of the cabinet body. The spraying port of the fire extinguisher is communicated with the top of the cabinet body. An electromagnetic attraction mechanism controlling opening and closing of a safety pin of the fire extinguisher is arranged in the outlet of the fire extinguisher. The cabinet body is internally provided with a smoke detector, a temperature sensor and a heating device. A control device and an alarm device are arranged on the top of the cabinet body. The control device receives signals of the smoke detector and signals of the temperature sensor and controls operation of the fans, the heating device, the electromagnetic attraction mechanism and the alarm device. The safe cabinet-split type switch cabinet is installed and maintained conveniently, the temperature inside the switch cabinet can be effectively controlled, an alarm can be given when open fire occurs in the switch cabinet, and the open fire in the switch cabinet can be put out.

The invention relates to a low-voltage draw-out switch gear, in particular to a propulsion mechanism for a drawer of a low-voltage draw-out switch cabinet, including a precession mechanism and a three-position locking mechanism, wherein, the precession mechanism includes a transmission spiral which is arranged on a bottom board of the drawer by a support and a groove-shaped locating piece which is inosculated with the transmission spiral and pushes the drawer to move forward and backward and is arranged on a layer board of a cabinet body; the positioning with the linear movement of the drawer is carried out by a spiral protrusion of the transmission spiral and a chute of the groove-shaped locating piece, so as to ensure the drawer not to be skewed and generate a mechanical movement dead point when the drawer receives the reverse withdrawal force. The invention adopts the multi-ring effort-saving propulsion principle of the transmission spiral to ensure the effort-saving propulsion of the drawer, creatively utilizes the spiral protrusion of the transmission spiral and the chute of the groove-shaped locating piece to effectively control the balanced movement of the drawer and fully controls the drawer to be balanced absolutely and not be skewed when the drawer receives the reverse withdrawal force, the operation is flexible and easy, and the operating mechanical faults can be eliminated.

The invention discloses a high-voltage centrally-installed switchgear with an automatically-controlled drawing-out unit part. The high-voltage centrally-installed switchgear comprises a cabinet body, wherein a bottom plate is arranged inside the cabinet body and is used for placing a drawing-out unit, a cabinet door is further arranged outside the cabinet body, first power-driven telescopic rods are separately and movably arranged at the two inner sides of the cabinet body, an output end of each first power-driven telescopic rod is movably connected with one side of the cabinet door, a sliding rail is arranged at each of the two sides of the bottom plate, four corners at the lower part of the drawing-out unit are separately and movably connected with the sliding rails at the two sides of the bottom plates through a group of sliding blocks, a connection block is further arranged at the middle position of the lower part of the drawing-out unit, a second power-driven telescopic rod is arranged on the inner wall of the cabinet body at the lower rear part of the drawing-out unit, and an output end of the second power-driven telescopic rod is connected with the connection block under the drawing-out unit. The centrally-installed switchgear can be automatically drawn out, the drawing-out unit also can be supported without any external support element, and the repair work of a maintainer is greatly facilitated.

The invention discloses a novel power distribution cabinet device, which comprises a cabinet body provided with an accommodating cavity inside and a drawer provided in the accommodating cavity with a sliding frame. The top of the accommodating cavity is provided with a push groove, so that A moving push block and a driving screw driven by a driving motor are arranged in the pushing groove, and more than three cooling fins are arranged on the casing of the driving motor, and the cooling fins are fixedly connected with the driving motor, and equidistant It is arranged on the casing of the drive motor, and the cabinet on the left side of the accommodation cavity is provided with a first transverse cavity, a drive cavity and a second transverse cavity, and the left side of the drive cavity is provided with a first longitudinal cavity and upward Extended setting, the right side of the drive cavity is provided with a second longitudinal cavity and extended downwards; the invention has a simple structure, realizes automatic control extraction and power off when maintenance is required, and automatically controls push in and power on after the maintenance is completed. Reduce personnel accidental touch, improve the safety of maintenance.

The invention discloses a controllable power distribution cabinet device, and the device comprises a cabinet body with an accommodation cavity inside, and a drawer part which is disposed in the accommodation cavity and drives a sliding frame to move. The top of the accommodation cavity is provided with a push-in groove, and the interior of the push-in groove is provided with a moving push block and a drive screw driven by a drive motor to operate. A part, located at the right side of the push-in groove, of the cabinet body is provided with a contact inductor, and the contact inductor is electrically connected with the drive motor. The contact inductor is fixed with the cabinet body, and is set to be opposite to the moving push block. The interior of a part, located at the left side of the accommodation cavity, of the cabinet body is provided with a first lateral cavity, a drive cavity, and a second lateral cavity. The left side of the drive cavity is provided with a first longitudinal cavity which extends upwards. The device is simple in structure, achieves the automatic control of drawing and switching-off during maintenance, achieves the automatic push-in and switching-on after maintenance, reduces the wrong touch of a worker, and improves the maintenance safety.

The invention relates to a 10kV high-voltage integral electric energy metering device which comprises a metering cabinet and a fuse protector handcart, wherein a fuse protector chamber, a bus chamber, a voltage transformation chamber, a bus coupler chamber and a metering chamber which are separated by partition plates are arranged in the metering cabinet, the metering chamber, the fuse protector chamber and the voltage transformation chamber are sequentially arranged at the front part of the metering cabinet from top to bottom, the bus chamber and the bus coupler chamber are sequentially arranged at the rear part of the metering cabinet from top to bottom, and the fuse protector handcart is arranged in the fuse protector chamber. Compared with the prior art, the device has the advantages of improvement on work efficiency, improvement on factorization skill, reduction in the comprehensive error of the metering device, excellent mechanical strength and the like.

The invention discloses a power drawer cabinet device with a selective unlocking function. The power drawer cabinet device comprises a cabinet body (1), a first driving motor (3), an unlocking cavity (5), a plurality of drawer assembly movable cavities (7) and locking cavities (6), wherein the first driving motor (3) is arranged at one side of the cabinet body (1); the unlocking cavity (5) is arranged in the cabinet body (1) and extends along the cabinet body (1); the drawer assembly movable cavities (7) are arranged at the outer side of the unlocking cavity (5); each locking cavity (6) is arranged at the top end of the corresponding drawer assembly movable cavity (7); an unlocking mechanism (4) is arranged in the unlocking cavity (5); first driving screw rods (5) respectively penetrate through the interiors of the upper side and the lower side of the unlocking mechanism (4), and are in threaded connection with the unlocking mechanism (4); one side of each first driving screw rod (42) is rotationally connected with the first driving motor (3). The power drawer cabinet device has the advantages that the structure is compact, the running is reliable and stable, and the safety and reliability are realized.

An interlock assembly is for locking the operating assembly of a safety switch when the cover thereof is open or removed. The safety switch includes an enclosure with the cover and side walls. The operating assembly includes a bracket and a spring-toggle mechanism with a spring-biased drive link having an arm. An operating handle, which is coupled to the spring-biased drive link, operates the operating assembly. The interlock assembly includes a pivotal lever having a catch and a sensing portion. A pivot receives a blind rivet and pivotally couples the pivotal lever to the side wall. A torsion spring biases the pivotal lever toward engaging the arm of the spring-biased drive link in order that the catch engages and locks the arm when the cover of the enclosure is open. The sensing portion is engaged and pivoted by the cover when it is closed.

An electric chassis vehicle transmission assembly mainly solves the problems of poor reliability and unreliable working of the existing breaker handwheel electric transmission device, and is characterized in that: a centrifugal mechanism consists essentially of a shaft sleeve (5), a main gear (6), a clutch gear (7), a spring (8), a push rod (9) and a steel ball (10), wherein the clutch gear (7) issheathed outside the shaft sleeve (5) and can rotates relatively to the shaft sleeve (5); the main gear (6) and the clutch gear (7) are respectively meshed with the an input gear (2) and gears at theinput ends of a transmission gear group (4); the push rod (9) is placed in a central hole of the shaft sleeve (5) and can relatively slide with the shaft sleeve (5); one end of the push rod (9) corresponds to an iron core of an iron magnet (23); and the push rod (9) is provided with the spring (8). The electric chassis vehicle transmission assembly is characterized by safety and reliability, compact structure and uneasy damage to transmission parts.

An apparatus for preventing withdrawing and insertion of a carriage of a circuit breaker is disclosed. When a circuit breaker main body is inserted, an interlocking unit operates by interworking with the carriage withdrawing and inserting preventing apparatus, and while the circuit breaker is being closed, a withdrawal and insertion handle prevents a lead screw from being rotated by the interlocking unit. Thus, when the circuit breaker performs a closing operation, unnecessary withdrawing and inserting operation of the carriage is basically prevented to thus prevent various safety accidents, a contact resistance, a temperature increase, and damage to a device resulting from a breakdown.

The invention provides a switch cabinet handcart positioning device, a switch cabinet circuit breaker handcart matched with the handcart positioning device and a switch cabinet assembled on the handcart positioning device. The positioning device comprises a main body; the main body has a strip-shaped structure; a track groove is formed in the middle of the main body in the length direction; and a test position lock hole and a work position lock hole are formed in one side of the track groove at an interval. The switch cabinet circuit breaker handcart comprises a handcart body; positioning plates are respectively arranged on the two sides of the handcart body; and guide pulleys matched with the track groove of the handcart positioning device and elastic locking levers matched with the test position lock hole and the work position lock hole are arranged on the positioning plates. The switch cabinet handcart positioning device has the beneficial effects that a handcart can be accurately guided and transversely limited and can also be stably positioned under different position states; the applied moment generated by electric force can be effectively reduced, and further, the larger electric force can be overcome; and the switch cabinet handcart positioning device can be used for a handcart type switch cabinet of which the short-circuit current reaches 63 kA.

The invention discloses an indoor high-voltage switch cabinet. A cabinet body adopts an assembled structure, and is divided into a bus chamber, a handcart chamber, a cable chamber and a relay instrument chamber through a horizontally assembled baffle and a vertically assembled baffle, which are connected with one another through bolts, nuts and riveting nuts; the bus chamber, the cable chamber and the handcart chamber are respectively provided with pressure release devices; the bus chamber is provided with a branch small bus, a bus sleeve, a main bus, a fixed contact device, a fixed contact box and a current transformer; the cable chamber is provided with a grounding switch, a cable feed line, a lightning arrester and a grounding bus; the relay instrument chamber is provided with relay protection elements, an instrument, high voltage presence indicating device and a control small bus; and the handcart chamber is provided with a secondary plug, a heating device, a breaker handcart and a screw rod mechanism. The indoor high-voltage switch cabinet has the advantages that the assembled structure has high strength, the outer appearance is artistic, the shape of an electrode is optimized, the structure is compact, the occupied space is small, the accuracy is high, the interchangeability is good, the oxidation resistance is good, the heat dissipation is good, large current can be transmitted, the voltage is high, all switches and rear cabinet doors have against incorrect operation and mechanical interlocking functions, and the five-prevention functions are complete.

Disclosed is an electric drawer cabinet apparatus with cooperation between slide blocks and chutes. The apparatus comprises a frame body (9) and a drawer assembly (8), the two sides of the lower portion of the drawer assembly (8) are provided with the slide blocks (81) for cooperating with a slide guiding groove (92) disposed at the lower side of an accommodating cavity (91), used for accommodating the drawer assembly (8), of the frame body (9) so as to enable the drawer assembly (8) to go into and out of the accommodating cavity (91), the slide blocks (81) are in sliding cooperative connection with the slide guiding groove (92) so as to perform positioning and guiding on the drawer assembly (8) going into and out of the accommodating cavity (91), the lower side of the slide guiding groove (92) in the frame body (9) is fixedly provided with a transverse plate strip (41), the transverse plate strip (41) supports a driving slide block assembly (7), and the driving slide block assembly (7) comprises two support arm plates (731, 732) which are arranged at a left position and at a right position.

A cable backplane system includes a backplane having a plurality of openings therethrough. A cable rack is coupled to a rear of the backplane, which includes a tray and spacers coupled to the tray that have guide pins. Cable connector assemblies are held by the tray. Removable dust caps are coupled to corresponding cable connectors each having a distal end and guide walls extending therefrom that guide mating of the cable rack with the backplane. The distal end of each dust cap is received in a corresponding opening in the backplane. The guide walls guide the cable rack relative to the backplane such that the guide pins of the spacers are aligned with guide holes of the backplane and such that the cable connectors are aligned with the openings of the backplane. The removable dust caps are removed after the cable rack is coupled to the backplane.

The invention relates to a low pressure extraction type switch device, in particular to a pushing-interlocking mechanism of a crank three-position locating drawer which comprises a pushing mechanism and a three-position locating mechanism; the pushing mechanism pushes the drawer by a transmission screw and a slot-shaped locating piece; the three-position locating mechanism is a spring pressure locating device and comprises a three-position locating disk, a top locating rod, the elastic ejection mechanism of the top locating rod, and a transmission mechanism; the pushing mechanism drives the three-position locating disk to rotate by the transmission mechanism; a three-position locating slot is arranged on the three-position locating disk; when the three-position locating disk rotates to a corresponding position, the elastic ejection mechanism ejects the top locating rod so as to lead the top locating rod to be embedded into the three-position locating slot for locating the three positions of the pushing mechanism in turn. After the spring pressure device is adopted for locating the three positions of the pushing-interlocking mechanism of the drawer, a light handle resistance indicates an operator, thus clearly locating; compared with the prior locating mechanism, the operation is simplified and meets the safety requirements better.

The invention relates to a drawer push interlocking mechanism, comprising a push mechanism, a main driving wheel, a transmission locating mechanism and a locking mechanism, wherein the interlocking mechanism comprises a locating locking bar, a force transfer mechanism and a position locking notch; the position lock notch is installed on the outer peripheral surface of a transmission worm rod; when the locating mechanism is at working position, the position locking notch is towards the inserting direction of the locating locking bar; the force transfer mechanism is connected with a rotating part assembled on a front bracket, and drives the locating locking bar to radially insert in the position locking notch to enter the locking position or enter the unlocking position far from the position locking notch. The position locking notch on the transmission worm rod is towards the inserting direction of the locating locking bar when the equipment is located at working position; therefore, the potential safety hazard caused by faulty operation of gate closing is prevented when the equipment is located at non-working position. Moreover, when the operation handle is located at gate closing position, the locating locking bar directly locks the transmission worm rod to prevent faulty operation of gate closing, thereby improving the mechanism safety.

The invention discloses a draw-out device, which comprises a pair of side plates, a rotating shaft, two sets of gear drive mechanisms having the same structure, two pairs of fixed guide plates, a pair of sliding guide plates and a pair of supports, wherein the rotating shaft is arranged on the side plates; the gear drive mechanisms comprise a pair of driving gear wheels, a pair of intermediate gears and a pair of sector-gear cams having cam slideways, and the driving gears are fixed on the two ends of the rotating shaft and drive the sector-gear cams through the intermediate gears; the upper and lower fixed guide plates are arranged on the inner sides of the side plates, the outer front lower ends of the lower fixed guide plates are fixed with elastic stop pins and a slideway is formed between the upper rand lower fixed guide plates; the sliding guide plates are in front and back sliding connection with the inner sides of the lower fixed guide plates and limiting grooves are arranged in front and at back of the bottom ends of the sliding guide plates; and the supports are fixed on the two sides of an underframe of the body of the breaker and are fixed with upper rollers matched with the cam slideways and lower rollers rolling in the slideway. The device can ensure the reasonable stress, smooth movement and small operating force of the breaker body during the access to a drawer and is safe and reliable in structure.