270 results about "Knife switch" patented technology

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 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 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 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.

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 relates to a telescopic high-voltage disconnecting link shielding cover body device, and belongs to the field of live working protection devices of power equipment. The device comprises a disconnecting link body and a telescopic cover body, and the telescopic cover body adopts a wrinkle structure to perform telescopic deformation along the extension direction of the disconnecting link body so as to adapt to disconnecting links of different sizes; the device further comprises a modularized insulating thermosensitive layer and a pressing type magnetic locking module. The modularized insulating thermosensitive layer comprises a plurality of groups of insulating units which are detachably connected, the dielectric strength of each unit corresponds to different voltage grades, an insulating thermosensitive color-changing layer is arranged at the side end of each insulating unit, and reminding is realized through thermosensitive induction color changing; the pressing type magnetic locking module comprises permanent magnet arrays and magnetic conductive plates which are evenly distributed on the edges of the side ends of the two attached insulation units, and magnetic adsorption and fixation are achieved through pressing. The device is simple in structure and high in adaptability, can effectively protect the high-voltage knife switch, and improves the operation safety of power equipment.

The invention relates to the related technical field of isolation switch polishing, in particular to an electric power professional polishing and cleaning device which comprises a first plate body, a second plate body is fixed to one side of the first plate body, a box body is fixed to the top of the first plate body, a shaft body is rotationally connected to the top of the first plate body, and a first disc body is fixed to the top of the shaft body. A wiping part is arranged on the outer side wall of the first disc body, a second disc body is arranged on the first disc body, a friction part is fixed to the inner side wall of the second disc body, and an air pipe is arranged at the bottom of the second disc body; during use, the whole device is connected with a mechanical arm, the friction part is driven to rotate through work of the motor, the position of the friction part is changed through the mechanical arm, and therefore the contact is ground, in the grinding process, high-pressure gas is sprayed to the contact through an external gas source, and the contact is further cleaned. And after polishing is completed, the wiping part is driven by the work of the motor to rotate to wipe the contact, polishing of the contact is completed, and the polishing efficiency is improved.

The application relates to an AC disconnecting switch, in particular to the field of power equipment, which comprises a chassis, the chassis is provided with first and second support insulators, and static and dynamic side terminal boards are respectively arranged, the static side terminal board is provided with a conductive knife switch, the application further comprises a contact-free opening device, which comprises a clamping column connected with the conductive knife switch and provided with a first permanent magnet, a fixing sleeve sleeved on the dynamic side terminal board, a second permanent magnet repelling the first permanent magnet, a knife collecting column connected with the static side terminal board and the like, and a plurality of auxiliary structures such as a rotating sleeve, a positioning structure, a clamping structure, a buffering structure, a knife clamping structure, a locking structure and the like are arranged. The application achieves the technical effects that the contact-free opening of the AC disconnecting switch is realized, the operation safety and stability are improved, the conductive knife switch can be effectively stored, and the opening state of the conductive knife switch is stable and reliable.

The utility model relates to the technical field of control equipment, and provides internet of things control equipment, which comprises a control equipment body and a thermal insulation box, and further comprises two rails fixedly arranged at one end of the thermal insulation box, a plurality of sliding blocks are slidably mounted at the two ends, away from the center of the thermal insulation box, of the two rails; the two knife switches are fixedly mounted at the ends, close to the center of the thermal insulation box, of the multiple sliding blocks correspondingly, and limiting rods are slidably mounted on the inner walls of the multiple sliding blocks correspondingly; during use, open fire is prevented from entering the thermal insulation box through the rectangular pipe, fireproof protection on the storage disc is facilitated, customer information in the storage disc is protected, the flame-retardant box outside the thermal insulation box prevents the open fire from burning and reduces fire behavior, and the vacuum area between the thermal insulation box and the flame-retardant box facilitates reduction of temperature conduction media. And the storage disc in the thermal insulation box is prevented from being damaged by high temperature.

A manual hydraulic adjustable chain controller for a ship is characterized in that a guide roller is fixed on a chain controller main body through a main shaft, a 150mm heightened base is arranged at the bottom of the chain controller main body, a knife switch is arranged on one side of the guide roller, fixed baffles are arranged on two sides of the knife switch, and the fixed baffles are fixed on the chain controller main body. A vertically-arranged hydraulic cylinder is fixed to the position, below the knife switch, of the chain controller body. An adjusting base plate is arranged between the fixed baffle and the knife switch, and a detachable shaft pin penetrates through the center of the adjusting base plate; anchor cable fixing shafts are fixed to the two sides of the front end of the chain controller body respectively, an anchor cable bypasses the anchor cable fixing shafts, an anchor chain bypasses the guide roller, and after the anchor chain is clamped and fixed by the knife switch, the anchor chain penetrates through the anchor chain ring and tensions the anchor cable. The mode that the hydraulic pump and the hydraulic cylinder are manually operated to jack up the fixed knife switch to ascend and descend is adopted, and the mode that an original heavy anchor chain fixed knife switch is opened and closed manually in the prior art is replaced.

The application discloses a kind of offset sensitive coupling mechanism and knife gate opening and closing in place determination system, coupling mechanism includes energy transmitting coil, energy transmitting coil magnetic core, energy receiving coil and energy receiving coil magnetic core, energy receiving coil moves along preset trajectory, vertically set up in the center position of energy transmitting coil opposite magnetic core, and opposite offset point is vertically set up on the preset trajectory close to energy transmitting coil, and opposite offset point vertically set up opposite offset magnetic core, when energy receiving coil and energy transmitting coil opposite, the upper end of opposite magnetic core opposite the central region of energy receiving coil, when energy receiving coil moves to offset point, the upper end of offset magnetic core opposite the central region of energy receiving coil.It is: the process that energy receiving coil occurs offset, coupling coefficient change rate is greater, it is helpful to system to better identify voltage variation, improve knife gate detection system reliability.

The utility model discloses a knife switch, and belongs to the field of electrical switches. The device comprises a bottom plate, a shell cover, a blade and a contact seat, the contact seat comprises an upper contact seat and a lower contact seat which are arranged at an interval, the blade is hinged to the lower contact seat, and the blade and the upper contact seat are in openable connection; the upper end of the blade extends out of the shell cover and is fixed with an operating handle; the upper contact seat comprises two clamping arms which are oppositely arranged, a clamping opening for inserting a blade is formed between the two clamping arms, a necking U-shaped clamping spring is arranged on the upper contact seat, the U-shaped clamping spring is of a sheet-shaped structure, and clamping grooves are formed in the opposite positions of the opposite sides of the two clamping arms; limiting bayonets with openings are formed in the side edges of the two clamping arms, the U-shaped clamping spring is clamped into the limiting bayonets, and the two end feet of the U-shaped clamping spring are connected to the clamping grooves of the two clamping arms in a clamped mode respectively; according to the utility model, the structure of the knife switch is optimized, so that the U-shaped clamp spring is convenient to install, the production efficiency can be improved, and the use performance of the knife switch can be ensured.

The invention discloses a three-station integrated load switch and a use method thereof, and the load switch comprises a switch body, a movable rod is arranged below a movable contact of the switch body, a first rack is vertically arranged on the rear side of the movable rod, a first gear is engaged with the first rack, and the first gear is fixed on a first rotating shaft. One side of the first rotating shaft is connected with a first motor, a grounding knife switch is arranged below a grounding contact of the switch body, a second rack is vertically arranged below the grounding knife switch, the second rack is meshed with a second gear, the second gear is fixed on a second rotating shaft, and one side of the second rotating shaft is connected with a second motor. The gear rack mechanism is driven by the motor, accurate control and stable movement of the movable rod and the grounding knife switch are achieved, sudden impact of a traditional lever mechanism is avoided, the probability of arc generation is reduced, and through a multi-stage buffer system of the first spring, the buffer plate, the buffer block and the second spring, the service life of the grounding knife switch is prolonged. The impact force of the movable rod in the moving process is effectively absorbed, direct and rapid impact between the movable contact and the static contact is avoided, and the electrical bounce phenomenon is reduced.

The utility model discloses a casting sand core assembling mould which comprises a mould main board, a linear sliding rail sleeve is arranged on the mould main board, a sliding block a and a sliding block b are opened in place through the linear sliding rail sleeve, a screw of the sliding block a is limited to make contact with an opening-in-place collision block of the sliding block a, and the sliding block b makes contact with the opening-in-place collision block of the sliding block a. Before a sand core is assembled, the sliding block b limiting knife switch is rotated to be in limiting contact with the sliding block b limiting knife switch, the sliding block a limiting knife switch is rotated to be in locking limiting locking with the sliding block a limiting knife switch, the sliding block b is closed in place, and the limiting block is in contact with the b limiting touch block. The sliding block b limiting knife switch rotates and is locked with the sliding block b limiting knife switch in a limiting mode, and the a limiting collision block makes contact with the c limiting collision block. By using the mould, the production efficiency is improved, the quality is improved, the coating is convenient and quick to apply, the labor is saved, and better economic benefits are brought to enterprises.