434 results about "Knife switch" patented technology

The invention relates to the technical field of circuit breakers, in particular to an anti-burnout primary and secondary fusion sleeve column circuit breaker, which comprises a circuit breaker main body, three isolating knife switches, three contact elastic sheets, a rotary driving mechanism and a mounting framework, and is characterized in that when a front knife board is clamped on the two contact elastic sheets, the front knife board is clamped on the two contact elastic sheets; the two contact elastic pieces can be pushed inwards through the outward pushing mechanism, so that the two contact elastic pieces clamp the front cutting board, and the problem that the elastic force of the contact elastic pieces is lost due to long-term use is solved. When the front cutting board and the rear cutting board are bent due to the rust block, the front cutting board rotates, the front cutting board and the rust block of the contact elastic piece form a rotary cutting mode, the rust block is broken point by point in the mode, and resistance borne by the isolation cutting board when the isolation cutting board is lifted is reduced. And in addition, pulling friction can be generated in the rotary cutting mode, the rust blocks are prevented from being taken up wholly, and more gaps between the isolation cutter plate and the rust blocks are avoided.

The utility model discloses a primary and secondary fusion high-voltage pole-mounted circuit breaker, which belongs to the technical field of circuit breakers, and is characterized in that a primary and secondary fusion assembly is mounted at the top of a fixing frame, a plurality of vacuum circuit breakers are mounted at the top of the primary and secondary fusion assembly, and a connecting rod assembly is mounted at the top of the fixing frame; a pull rod assembly is installed at the top of the installation plate and used for driving a connecting rod assembly, the pull rod assembly is installed at the operation end of the connecting rod assembly, two sliding blocks are fixed to the outer end of a movable pull rod, and a limiting groove is formed in a limiting block on the installation frame and used for limiting the sliding block on the movable pull rod. When the switch is switched on, the movable pull rod needs to be pulled upwards to enable the sliding block to be separated from the limiting groove, and then the movable pull rod can be rotated to drive the connecting rod assembly to switch on, so that switch-on caused by mistaken touch of workers can be prevented, and the safety is improved.

The invention relates to the technical field of switch devices, and particularly discloses a vacuum parallel switch device and switch equipment. The vacuum parallel switch device comprises an isolation contact, a vacuum arc extinguishing mechanism, a transmission mechanism and an isolation disconnecting link. The transmission mechanism comprises a transmission assembly, a first elastic piece and a limiting piece, the limiting piece is arranged on the insulating shell, and the transmission assembly is connected with the moving contact. The isolation switch drives the transmission assembly to drive the moving contact and the static contact to be separated in the process of rotating in the first rotating direction, and after the moving contact and the static contact are separated, the transmission assembly achieves balance under the combined action of the first elastic piece and the limiting piece so that the moving contact and the static contact can be kept separated. When the isolation switch rotates along the second rotation direction, the transmission assembly is driven to drive the moving contact to be connected with the static contact, and before the moving contact is connected with the static contact, the isolation switch is connected with the isolation contact. The vacuum parallel switch device is good in opening and closing operation safety.

The present invention relates to the technical field of disconnectors, and discloses an electric operating device for a high-voltage disconnector, comprising a switch assembly, a support seat, a rotating rod rotatably connected in the support seat, a drive sleeve fixed at the end of the rotating rod, and a drive plate fixed on the surface of the drive sleeve; an operating assembly, arranged on one side of the drive plate, comprising a separation and combination member, a support shell arranged on one side of the drive plate, and a screw rod rotatably connected in the support shell. The beneficial effects of the present invention are as follows: 1. The first spring is compressed or stretched by the screw rod, and the drive plate is driven to move quickly by the spring reset elastic force, so as to realize the rapid separation and closing of the knife switch, reduce the generation of arc, reduce the wear of the contacts, and extend the service life of the equipment; 2. An emergency disconnect mechanism composed of a reset member and an electromagnet is provided. When a circuit fails, the electromagnet drives the limit release, and the tension of the seventh spring prompts the reset block to push the moving seat, quickly opening the knife switch, avoiding the expansion of the fault, and ensuring the safety of the power system.

The invention belongs to the technical field of hot-line work, and particularly discloses a complete insulation baffle plate for replacing a disconnecting link load side lead in 10kV hot-line work and a use method, the complete insulation baffle plate comprises a hanging plate, and the hanging plate is of an insulated plane plate-shaped structure; the upper side edge and the lower side edge of the hanging plate are provided with a cross arm hook and a baffle handle respectively. The cross arm hook is used for being matched with a cross arm; one side surface of the hanging plate is provided with a disconnecting link inner side insulating cover; the carrying head baffle is arranged on the side of the hanging plate; the head carrying baffle is bent to be of a C-shaped structure, a second notch is formed in the bottom of the head carrying baffle, the second notch is provided with a disconnecting link outer side insulation cover, and the disconnecting link outer side insulation cover is matched with the disconnecting link inner side insulation cover and used for being matched with a disconnecting link. The disconnecting link shield is bent to be of a U-shaped structure; and the opening end of the disconnecting link shield is matched and connected with the bottom of the carrying head baffle plate. According to the invention, the electrified body and the grounding body can be effectively isolated, the structural stability in the operation process is improved, and the operation time and manpower consumption are reduced.

The invention discloses a method for detecting the state of an earthing knife circuit breaker based on deep learning and a key point detection calculation technology, and relates to the field of power equipment detection, and the method comprises the steps: collecting a visible light image; performing data enhancement processing; building a deep learning model and improving the model; an improved EDC-YOLO model is introduced and a GeoKeyNet method for key point geometric feature calculation is combined, accurate state judgment can be carried out on obvious and easily-recognized key points on a grounding knife switch, and particularly under the condition that some grounding knives have small displacement, key point detection can effectively capture subtle changes, so that the opening and closing state of the grounding knife switch is accurately recognized, and the detection accuracy of the grounding knife switch is improved. The method not only makes up the limitation of traditional sensor monitoring, but also provides an efficient, accurate and automatic monitoring scheme especially under the condition that subtle changes cannot be fully captured and comprehensive monitoring cannot be achieved, and the monitoring precision and the working efficiency of the grounding knife-switch circuit breaker can be remarkably improved.

The invention provides a 35kV isolation switch opening and closing device. The 35kV isolation switch opening and closing device comprises a substrate, a contact unit, a transmission assembly and a driving unit. The substrate is provided with two composite post insulators which are arranged at an interval; the contact unit comprises a first connecting part and a second connecting part, the first connecting part is connected with one composite post insulator, and the second connecting part can be connected with the other composite post insulator; the transmission assembly is arranged in the vertical direction, and the top end is connected with the second connecting part. The driving unit is connected with the bottom end of the transmission assembly and used for driving the transmission assembly to move in the vertical direction, and the transmission assembly drives the second connecting part to move; wherein the driving unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to be in contact with or disconnected from the corresponding composite post insulator, so that switching-on or switching-off is realized. The invention provides a 35kV isolation knife switch opening and closing device, and aims to solve the problem of poor safety caused by manual close-range opening and closing of an isolation knife switch in the prior art.

The present invention discloses a method for detecting the closed state of an isolating switch based on a preset position camera, which obtains the preset position information of the camera, and the preset position information includes the type of knife switch monitored by the camera and the target area; performs feature matching and comparison between the monitoring image of the camera and the preset position image to determine whether the monitoring image of the camera deviates; if there is a deviation, the camera angle is adjusted based on the preset position image; otherwise, it is determined whether there is a target knife switch to be detected in the preset position image; if there is a target knife switch, a corresponding detection model is selected according to the type of the target knife switch; the monitoring image is input into the selected detection model, and the detection model gives the status result of the current knife switch according to the monitoring image; it is determined whether the degree of overlap between the status result of the current knife switch and the preset target knife switch position is greater than a set value; if so, the knife switch status detected by the model is output. The present invention does not require the addition of new sensors, and has a stronger generalization capability based on the deep learning method, can cover various weather and light changes, and can solve the problems existing in the prior art.

The invention provides a grounding switch taking environment-friendly gas as an insulating medium. The grounding switch comprises a shell, and a transmission mechanism assembly, a grounding knife switch assembly, a moving side arc contact assembly and a static side arc contact assembly which are arranged in the shell, one end of the transmission mechanism assembly is connected with the output end of an external operating mechanism, the other end of the transmission mechanism assembly is connected with the grounding knife switch assembly, the transmission mechanism assembly is further connected with a grounding assembly, the moving side arc contact assembly is arranged at the action end of the grounding knife switch assembly, and the static side arc contact assembly is arranged on a bus side conductor. And the transmission mechanism assembly is controlled to act, and the grounding knife switch assembly drives the moving side arc contact assembly to do linear motion and to be in contact with or separated from the static side arc contact assembly, so that the grounding switch executes opening and closing. The circuit breaker has the advantages of being reasonable in structure, low in cost, reliable in action, stable in insulation performance and high in ablation resistance, and circuit opening and closing can be completed under an environment-friendly gas medium.

The invention relates to the technical field of knife gate valves, and discloses a bidirectional sealing two-piece type knife gate valve which comprises a butt joint assembly used for being in butt joint with a pipeline, a sealing assembly used for achieving a sealing effect is arranged at the upper end of the butt joint assembly, and a knife switch blocking mechanism used for blocking internal circulation and transmission of the butt joint assembly is longitudinally and movably arranged in the butt joint assembly. A driving mechanism drives a transmission shaft to rotate and transmit to a non-contact magnetic coupling transmission mechanism, a driving coupling sleeve rotates to form magnetic coupling, a transmission permanent magnet drives a transmission coupling shaft to rotate synchronously, and the power is transmitted to a transmission column in a cleaning assembly through a three-section universal joint, so that a scraper continuously cleans the surface of a positioning disc, and deposit accumulation is prevented; smooth opening and closing of the knife switch are guaranteed, the equipment operation period is remarkably prolonged, the maintenance frequency is reduced, the whole system integrates opening and closing, sealing and cleaning, power transmission is efficient, contact and abrasion are avoided, and the problems of deposition and attachment, opening and closing clamping stagnation, maintenance difficulty and the like of a traditional knife gate valve are effectively solved.

The invention relates to the technical field of medium-voltage complete equipment, in particular to a load switch based on vacuum arc extinguishment, which comprises a disconnecting link assembly, a vacuum arc extinguish chamber and a vacuum arc extinguish chamber, and is characterized in that the disconnecting link assembly comprises a disconnecting link moving end and a disconnecting link static end, and the disconnecting link moving end is connected with or disconnected from the disconnecting link static end through driving of an external driving mechanism; the connection and disconnection of the disconnecting link moving end and the disconnecting link static end correspond to the connection and disconnection of a main loop; the vacuum arc-extinguishing chamber is electrically connected with the disconnecting link assembly in parallel; the vacuum arc-extinguishing chamber comprises a static contact and a moving contact, the static contact is connected with the static end of the disconnecting link, and the moving contact is connected with the transmission assembly. The disconnecting link assembly and the vacuum arc-extinguishing chamber are connected in parallel, so that current is transferred to a vacuum arc-extinguishing chamber branch at the initial opening stage, arc extinguishing is completed by utilizing the vacuum arc-extinguishing chamber, the situation that the disconnecting link directly breaks load current is avoided, and the vacuum arc-extinguishing chamber is driven to be opened after an enough safety gap is reached through the matching relation of the disconnecting link assembly and the transmission assembly. And electric arc reignition and breakdown risks caused by insufficient gaps are avoided.

The invention relates to the technical field of disconnecting link maintenance and transformation, in particular to an isolation disconnecting link updating and transformation method. The method comprises the following steps: S1, performing inspection and quantitative analysis, performing equipment evaluation and problem diagnosis, and identifying operation problems and function deficiency; s2, performing model selection and material optimization, and setting a standard isolation switch and an electric operation assembly; s3, defining a transformation range, dividing transformation units based on the main wiring diagram, and covering the isolation disconnecting link and the grounding disconnecting link; s4, implementing a safety locking structure, adding an electrified locking and five-prevention system, and accessing whole plant management to prevent misoperation; and S5, accessing a monitoring system, and connecting an LCU screen and a computer monitoring system to realize remote centralized control. The contact resistance and temperature rise of the contact reach the standard, ablation is completely eradicated, the operating force and time are greatly reduced, jamming is returned to zero, the five-prevention locking success rate is extremely high, the misoperation drill can reach the zero penetration level, and the on-site actual effects of mechanical zero jamming, five-prevention zero penetration, remote control zero delay and old and waste utilization are achieved.

The application discloses a kind of on-load tap-changer monitoring devices, methods, equipment and storage medium, the device includes position sensor, current sensor and information acquisition processor, position sensor is set to the transmission assembly of on-load tap-changer, for detecting the action information of on-load tap-changer switching knife switch, current sensor is set to the power electronic component of on-load tap-changer and the loop of switching switch, for detecting the current information of the power electronic component, information acquisition processor is used to receive action information and current information, and action information and current information are exported.The on-load tap-changer monitoring device of the embodiment of the application can monitor the action information of switching knife switch and the current information of power electronic component in real time by installing position sensor on transmission assembly, setting current sensor in the loop of power electronic component and switching switch, installation position is reasonable, and it is convenient to monitor on-load tap-changer internal information.

The invention relates to the technical field of circuit breakers, and discloses a convenient-to-install primary and secondary fusion complete column-mounted circuit breaker, which comprises a bearing base, a plurality of circuit breaker bodies are arranged at the top of the bearing base, and corresponding arc chute covers and connecting knife switches are respectively arranged on the surface of the front end of the bearing base corresponding to the number of the circuit breaker bodies. An arc extinguishing grid plate used for segmenting and extinguishing electric arcs is installed in the arc extinguishing grid cover. During power-off operation, an insulating stick drives a knife switch to be switched off, a first gear-rack mechanism pushes an extrusion plate to compress hydraulic oil, the hydraulic oil is injected into a liquid storage bag after breaking through a limit, and an upper connecting plate and a lower connecting plate are triggered to perform bidirectional driving; and a tapered isobaric gradient layout is formed. According to the layout, the grid plate spacing is reduced compared with the initial spacing, and multi-stage arc segmentation is realized; meanwhile, the expanded inert gas channel enables the gas flow rate to be increased, and the arc extinguishing effect is improved through the dual effects of medium cooling and air pressure impact.

The utility model relates to the technical field of disconnecting switches, and discloses a disconnecting switch which comprises a base, a first supporting column and a second supporting column are arranged on the base, a first tool apron and a second tool apron are arranged on the first supporting column and the second supporting column respectively, a switch blade is rotationally connected to the first tool apron, a rotating assembly is arranged on the switch blade, and the rotating assembly is connected to the second tool apron. The base is rotatably connected with a first rotating shaft, the base is provided with a limiting structure, the limiting structure comprises a first limiting plate, a second limiting plate and a moving rod, the base is rotatably connected with a second rotating shaft, and the second rotating shaft is provided with a grounding assembly. Therefore, the grounding assembly is kept in an opening state, an operator is prevented from mistakenly touching the grounding assembly, the situation that the disconnecting switch and the grounding assembly are closed at the same time is reduced, and the safety of the operator and equipment is further guaranteed.

The utility model relates to a high-voltage direct-current deicing isolating switch, which is structurally characterized in that a 550KV post insulator and a 35KV post insulator are parallelly arranged at the top of a base, a grading ring is arranged at the top of the 550KV post insulator, a static contact is arranged on the grading ring, and a main knife switch with a bending structure is arranged between the 35KV post insulator and the static contact; a bending control mechanism is arranged at the bottom of the main knife switch; an electric operating mechanism at the bottom of the base is connected with the bending control mechanism through an operating rod; and after the main knife switch is unfolded, the contact plate at the top is plugged with the static contact. According to the structure of the high-voltage direct-current ice-melting isolating switch, the conductive section of the conductive tube is increased, and the through-current capability of a product is improved; the main knife switch adopts a bending structure and has the characteristics of flexible rotation and strong corrosion resistance; the structure of the product is simplified, the later maintenance is facilitated, the maintenance period is prolonged, and the stability of switching-off and switching-on operation after the product runs for many years is ensured.

The invention relates to the field of transformer substation pressing plates, in particular to a wire spring type duplex remote control pressing plate which comprises a remote control executing mechanism and a duplex pressing plate body, the remote control executing mechanism is connected with the duplex pressing plate body, and a push-out mechanism and a rotating mechanism are arranged in the remote control executing mechanism; the push-out mechanism is connected with a rotating shaft disconnecting link penetrating through the duplex pressing plate body through a propeller, and the outer side of the propeller is connected with a rotating mechanism, so that the rotating shaft disconnecting link can stretch out, draw back and rotate on the duplex pressing plate body. The duplex pressing plate body is provided with a double electrical connection loop, the double electrical connection loop is provided with at least a first pair of wire spring plugs and a second pair of wire spring plugs, the first pair of wire spring plugs and the second pair of wire spring plugs do not interfere with each other, and the first pair of wire spring plugs is used for controlling the on-off state of the duplex pressing plate body. The second alignment spring plug is used for feeding back the switching state of the duplex pressing plate body to the background in real time; and the rotating shaft disconnecting link is provided with at least two first electrodes and second electrodes which are not interfered with each other.

The utility model relates to the technical field of rail logistics systems, in particular to a lock catch device of a knife switch type rail breaking device, which comprises a gate assembly, a release mechanism, a lock catch mechanism and a shifting mechanism, the gate assembly comprises a gate capable of vertically moving, the release mechanism comprises a mounting seat, a hook and a first spring, the mounting seat is arranged on the outer side of the gate, and the hook is arranged on the mounting seat. The hook is rotatably connected with the mounting seat, the upper end of the gate is hung on one side of the hook, the first spring is used for applying downward rotation acting force to one side of the hook, the lock catch mechanism comprises a buckle and a second spring, one end of the buckle is rotatably connected with the mounting seat, and a middle step structure is movably clamped with a protrusion of the hook. The second spring provides acting force for the buckle to abut against the hook, and the shifting mechanism is used for driving the other end of the buckle to rotate clockwise or anticlockwise. When the gate is not released, the shifting mechanism can only drive the buckle to rotate in the direction separated from the hook, shifting in the wrong direction is avoided, and an operator can timely and accurately complete the operation of releasing the gate.

The utility model relates to the technical field of paperboard processing, in particular to a paperboard quantitative cutting device which comprises a workbench, a portal frame, a pneumatic cylinder, a knife switch and a cutting assembly. The cutting assembly comprises a sliding frame, a vacuum air cylinder, a suction cup, a motor, a threaded rod, a connecting sleeve, a sliding rod and an auxiliary mechanism. A vacuum air cylinder on the sliding frame is started, the vacuum air cylinder outputs negative pressure, a suction cup can suck the paperboard, meanwhile, a motor is started to drive a screw to rotate, the sliding frame is driven to move, and meanwhile the side, away from a connecting sleeve, of the sliding frame slides on a sliding rod, so that the sliding frame is more stable during moving; according to the paperboard material quantitative cutting assembly, a paperboard adsorbed by a suction cup can be stably moved to the side close to a portal frame, and therefore the problem that when an electric push rod is used for pushing a clamping plate to fix the paperboard in a U-shaped plate, the thicknesses of different paperboards are different or the paperboards are wet, and the clamping plate cannot stably fix the paperboard is solved.

The utility model provides a GIS double grounding isolation knife switch, including base, mounting post, support device, support insulator, conductive system, grounding system, transmission system and operating mechanism, the base is equipped with the mounting post, the mounting post is equipped with the support device, the support device includes the support table and support rib plate, the support rib plate is equipped with the support insulator, the conductive system, the grounding system, the transmission system and the operating mechanism. The supporting rib plate is installed at the bottom of the supporting table, the supporting insulators are arranged on the two sides of the supporting table, the conductive system is located on the tops of the supporting insulators, and the conductive system is connected with the transmission system; the grounding system is mounted on the mounting column and is connected with the transmission system; the transmission system is located on the right side of the base, and the transmission system is connected with the operating mechanism; the operating mechanism comprises a hydraulic device and a control cabinet, the hydraulic device is arranged on the side face of the base, and the control cabinet is arranged in front of the base.

The utility model discloses a busbar capable of electrically and flexibly plugging a miniature circuit breaker in a distribution box, which comprises a back plate and a combiner box body, the combiner box body is a rectangular body, a knife switch is arranged in the combiner box body, the back surface of the combiner box body is fixed on the back plate, a first connecting end connected with a main switch is led out from the top of the combiner box body, and a second connecting end connected with the main switch is led out from the top of the combiner box body. The left side and the right side of the combiner box body are respectively provided with a plurality of circuit breaker plugging positions which are arranged in sequence, each circuit breaker plugging position comprises a temporary fixing position, an anti-electric shock switch and a second connecting end connected with the wiring end of the miniature circuit breaker, the second connecting ends are located on the side face of the combiner box body, and the anti-electric shock switches are connected with knife switches in the combiner box body. According to the utility model, only the capacity of equipment in an area needs to be roughly calculated, the phase number and the current size of a switch do not need to be considered, and the design difficulty of a designer is greatly reduced; when the machine table moves, the switch can be pulled out and reused, so that waste is avoided, and the cost is saved; the switch can be plugged under the condition of uninterruptible power, an operation area is not electrified, and the safety is high; the switchboard does not need to reserve a switch, so that waste is avoided, and cost is saved; product reliability is high and installation is simple.

The utility model provides a one-key sequential control controller. The one-key sequential control controller comprises a shell and a control circuit board, the shell comprises an upper shell body and a lower shell body, screw openings of the fixing screws are arranged on the front face of the upper shell body and the bottom face of the lower shell body, and the upper shell body and the lower shell body are fixed together through the screws. And the control circuit board is arranged in the shell and is used for operating and controlling the circuit breaker, the handcart and the grounding switch. The device has a local operation mode and a remote operation mode, and can automatically complete the operation of the circuit breaker, the handcart and the grounding knife switch according to an input instruction; meanwhile, the switch operation of the switch cabinet is controlled to be in the working state required by the input instruction, such as operation, hot standby, cold standby and maintenance.

The application relates to the technical field of power supply control equipment, and particularly discloses a 110kV substation GIS limiting mechanism anti-misoperation interlocking mechanism, which comprises a driving plate and an output shaft, the driving plate is rotatably arranged in a shell, the driving plate is provided with an upper sliding groove and a lower sliding groove, and the upper sliding groove and the lower sliding groove are both arranged in an inclined mode; a grounding knife switch driving motor and an isolation knife switch driving motor are arranged in the shell, the grounding knife switch driving motor controls a grounding knife switch lever to move, the grounding knife switch lever enters the upper sliding groove to control the driving plate to rotate, the isolation knife switch driving motor controls an isolation knife switch lever to move, and the isolation knife switch lever enters the lower sliding groove to control the driving plate to rotate; the mechanical interlocking between the isolation knife switch and the grounding knife switch is realized, the three-position GIS device is more safe and reliable during operation, and the grounding knife switch is prevented from being miscombined due to over-travel of the isolation knife switch, the isolation knife switch is prevented from being miscombined due to over-travel of the grounding knife switch, and a major power supply accident is avoided.

A single-fracture load isolation switch for a contact network relates to the technical field of isolation switches, and is used for solving the problem of short service life caused by defects between a main knife switch-on and switch-off time sequence and an arc extinguishing time sequence of an existing load isolation switch. Comprising a switch main body and a main knife contact plate, the switch main body is provided with a movable side wiring terminal and a static side wiring terminal, and a first end of the main knife contact plate is in hinge connection with the static side wiring terminal and is in contact connection with a static side main knife contact on the static side wiring terminal; and when the second end of the main knife contact plate is in contact with a movable side main knife contact on the movable side wiring terminal, closing is realized, at the moment, the movable side wiring terminal, the movable side main knife contact, the main knife contact plate, the static side main knife contact and the static side wiring terminal form a main conductive loop, and an auxiliary conductive loop which is arranged in parallel with the main conductive loop is also included. According to the invention, the problems of opening and closing and arc extinguishing time sequence of the main knife contact plate can be effectively solved, so that the isolating switch can work normally.

The invention discloses a multi-contact disconnecting switch and a copper bar stamping device. The multi-contact disconnecting switch comprises a disconnecting switch body and a movable knife switch, and one end of the movable knife switch is hinged to the top of an insulator column of the disconnecting switch body through a compression spring bolt and a hinge seat; the movable knife switch comprises two copper bar bodies which are arranged face to face, the inner side walls of the copper bar bodies are provided with more than two protruding strips in a full-length mode, and the protruding strips are symmetrically arranged in the width direction of the copper bar bodies. And the outer wall of the raised line is in contact with the outer wall of the contact. According to the invention, the convex strips are arranged on the contact surface in a full-length manner and are in multi-contact contact with the contact, so that virtual connection and impurity padding are avoided, and the temperature of the contact during normal operation is reduced.

This invention discloses a high-current DC disconnect switch, relating to the field of power electronics technology. It includes: a conductive housing with multiple parallel-connected knife switch moving contacts on both sides of the outer surface; multiple connecting rods, each hinged at its large and small ends to the multiple knife switch moving contacts on both sides of the conductive housing; and an operating mechanism assembly, the output end of which is hinged to the connecting rod body, used to drive the connecting rods to swing and synchronously rotate the knife switch moving contacts, causing them to contact or move away from the conductive housing. When the knife switch moving contacts contact the conductive housing, the disconnect switch is on; when the knife switch moving contacts move away from the conductive housing, the disconnect switch is off. This invention achieves synchronous and precise driving of multiple moving contacts, ensuring reliable contact between the moving contacts and the housing frame.

A loop impedance simulation device of the present invention relates to the technical field of loop impedance simulation, and comprises a base, a support is fixedly mounted on the base, a bearing frame is fixedly mounted at the top end of the support, a switching-on mechanism is arranged on the bearing frame, and the switching-on mechanism is composed of an assembling assembly used for assembling a knife switch and an opening and closing assembly used for driving the assembling assembly. An impedance monitoring body is further arranged on the base, the opening and closing assembly comprises a driven gear rotationally connected to the top end of the bearing frame, a rotating shaft seat is fixedly installed on the bearing frame, an arc-shaped receding groove is formed in the end, close to the driven gear, of the rotating shaft seat, and an arc-shaped gear ring driven by a servo motor is further arranged on a rotating shaft in the rotating shaft seat. The switch blade is driven to be opened and closed through a pure mechanical part, and a meshing structure of the arc-shaped gear ring and the driven gear is matched, so that the motion process of the switch blade is stable without offset, the problem of opening failure caused by high temperature of a traditional relay is avoided, and the continuity and reliability of loop impedance simulation are improved.

The utility model relates to an isolation switch of a vacuum circuit breaker, which comprises two switch blades, the outer sides of the front ends of the two switch blades are respectively provided with a reinforcing clamping plate, the front ends of the reinforcing clamping plates protrude out of the front ends of the switch blades, and the rear ends of the two reinforcing clamping plates are provided with first bolt pairs penetrating through the two switch blades in a penetrating manner. A first spring is arranged on a first bolt of the first bolt pair in a penetrating mode, a second bolt pair is arranged at the front ends of the two reinforcing clamping plates in a penetrating mode, and a second spring is arranged on a second bolt of the second bolt pair in a penetrating mode. According to the isolating knife switch of the vacuum circuit breaker, the balance of clamping force in front of and behind the contact point of the knife switch and the static contact is enhanced through the effect of the reinforcing clamping plate, so that the knife switch and the static contact are more stably kept to be jointed, and the performance requirement of dynamic thermal stability of the vacuum circuit breaker is met.

The utility model discloses a short circuit test tool, which comprises an insulating bottom plate and a conductive knife switch arranged on the insulating bottom plate, the insulating bottom plate comprises at least two plate bodies, an adjustable connecting rod is arranged between the plate bodies, and the distance between the plate bodies can be adjusted through the connecting rod; a first conductive seat and a second conductive seat are fixedly arranged at the positions, close to the front end and the rear end, of the insulating bottom plate respectively, the first conductive seat and the second conductive seat are located on the two plate bodies respectively, one end of the conductive knife switch is hinged to the first conductive seat, and the other end of the conductive knife switch is detachably connected with the second conductive seat. According to the short-circuit testing tool, transition is carried out through the conductive components such as the conductive knife switch and the conductive base, the spark phenomenon generated by direct contact of the two wires is prevented, meanwhile, the testing tool can be adjusted according to common requirements, installation is simpler, and adaptability to space changes is higher.

The invention belongs to the technical field of robot end executors, and discloses a grounding knife switch operation device, a robot and a grounding knife switch opening and closing method. The grounding knife-switch operating device comprises a rotating shaft, a positioning assembly, a clamp, a tightening piece and a transmission piece, the rotating shaft can rotate around the axis of the rotating shaft through a first driving piece, and the rotating shaft is flexibly connected with the first driving piece; the clamp is fixedly connected to one end, far away from the first driving piece, of the rotating shaft, and the clamp can grasp or loosen a grounding knife-switch stud of the switch cabinet; the tightening piece is slidably connected with the rotating shaft, so that the clamp can grasp or loosen a grounding knife-switch stud of the switch cabinet; the transmission part is in transmission connection with the tightening part and the second driving part to drive the tightening part to slide relative to the rotating shaft. The grounding knife-switch operating device can avoid idling caused by incapability of sleeving a grounding knife-switch stud; or the grounding knife-switch is not matched in place and is stuck due to the fact that the grounding knife-switch is not matched in place.