458 results about "Contact system" patented technology

The invention relates to the technical field of railway catenary monitoring, in particular to a multi-source sensing fusion method and system for state evaluation of a catenary compensation device, and the method comprises the steps: obtaining multi-source sensing data such as vibration, temperature and current, generating a phase space trajectory through employing a self-adaptive phase space reconstruction technology, and carrying out the state evaluation of the catenary compensation device; multiple topological features are extracted to form topological feature vectors, and the vectors are combined with temperature and current data to construct a fault probability model. According to the method, the health degree score of the contact network compensation device can be calculated, trend prediction can be carried out, early warning information can be generated, high-precision early warning is realized, the clamping stagnation risk of the pulley block can be predicted three months in advance, passive response is converted into active prevention, the maintenance efficiency and safety of the contact network are remarkably improved, and the maintenance cost is reduced. By means of the innovative technology, the safety of railway operation is improved, the maintenance cost is reduced, and revolutionary transformation is brought to the railway industry.

The invention discloses a method and a system for evaluating the reliability of a contact network system under an icing galloping condition. The method comprises the following steps: collecting icing galloping data of the overhead line system in real time, and carrying out load conversion and statistics on parts of the overhead line system in icing galloping by adopting a rain flow counting method; the reliability of parts under the icing galloping condition is calculated through the Miner cumulative damage theory, and weight distribution of the overhead line system is conducted through an analytic hierarchy process; based on the reliability and the weight distribution result of each part under the icing galloping condition, evaluating the reliability of the overhead line system of the data acquisition anchor section until the evaluation task is finished; the method and the system provided by the invention are suitable for evaluating the operation reliability of the contact network system in the icing galloping section, can provide support for operation and maintenance of the contact network system after icing galloping occurs, and have wide application prospects.

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises an insulating cover, a contact structure and a protective structure, and is characterized in that the contact structure is accommodated in the insulating cover; the protective structure is arranged on the circumferential side wall of the insulating cover, the protective structure is in contact with at least part of the circumferential side wall of the insulating cover, the protective structure comprises an elastic part, and the elastic part can apply pressure towards an inner cavity of the insulating cover to the insulating cover; and / or, the protection structure comprises a rigid part, and the rigid part can apply pressure towards the inner cavity of the insulation cover to the insulation cover, so that a safety protection effect can be achieved under extreme working conditions of short circuit, overload breaking and the like of the contact system, the sealing reliability of the cavity and the structural strength of the insulation cover are improved, and the high short circuit resistance requirement of a user is met.

The invention relates to the technical field of switch technology, in particular to a residual current action photovoltaic protection switch, which comprises a shell, a fixed contact system, an operating mechanism I, an operating mechanism II, an arc extinguishing system and an electronic monitoring unit, and is characterized in that the fixed contact system, the operating mechanism I, the operating mechanism II, the arc extinguishing system and the electronic monitoring unit are arranged in the shell; a permanent magnet is arranged in the side wall of an arc extinguish chamber of the arc extinguish system, a second electromagnetic coil is arranged on the bottom wall of the arc extinguish chamber of the arc extinguish system, and a magnetic field generated by the permanent magnet is perpendicular to a magnetic field generated by the second electromagnetic coil. A magnetic field generated by the permanent magnet and a magnetic field generated by the second electromagnetic coil are overlapped, so that the arc is lengthened under the acting force of the magnetic field, an arc channel is arranged on the arc chute in a matched mode, a spiral groove is formed in the arc channel, the arc moves along the spiral groove, and the motion path of the arc is lengthened until the arc disappears.

According to the contact mechanism, the contact system and the DC contactor of the utility model, the auxiliary moving contact module moves with the moving part transmission member and the moving contact bridge on the transmission member in an interlocking manner, the dimension chain is short, and the movement stroke is stable and reliable; as the reed is in interlocking fit with the transmission piece and the movable contact bridge through the base, the transmission piece can push the base to enable the movable contact bridge and the reed to synchronously perform disconnection motion, and inevitable disconnection can be ensured through larger main spring counterforce even if the reed is adhered to the auxiliary static contact, so that the on-off states of the main contact and the auxiliary loop are ensured to be consistent.

The invention relates to the technical field of life evaluation, in particular to a circuit breaker life evaluation method and system for switching an alternating current filter in an extra-high voltage converter station, and the method comprises the steps: collecting multi-dimensional operation data in the operation process of a circuit breaker in real time; extracting a high-frequency-band energy ratio as a contact system abrasion loss characteristic parameter; establishing an arcing energy accumulation model according to the arc light intensity time sequence signal, and calculating an effective arcing energy value of a single operation; constructing a life weight distribution model, inputting the wear loss characteristic parameters, the arcing energy accumulation value and the environment temperature and humidity data into the model, and outputting a mechanical wear index, an electric corrosion index and an environment degradation index; establishing a three-axis linkage correction function; generating a comprehensive life evaluation index based on the corrected mechanical wear index, electric corrosion index and environmental degradation index, and triggering an early warning signal when the index exceeds a preset threshold value; according to the invention, by establishing the life evaluation model based on multi-dimensional data fusion, the precision and reliability of life prediction of the circuit breaker of the extra-high voltage converter station are significantly improved.

The invention relates to a contact device (15), a contact system (20), and a method for assembling the contact system (15), wherein the contact device (15) comprises a contact element arrangement (65) with at least one contact element (70), and a housing (60) with a foil housing part (80), wherein the contact element (70) comprises a connecting section (160), at least one strain relief section (175, 180) arranged on the connecting section (160), and a cutting arrangement (170) arranged on the connecting section (160) with at least one first cutting element (200), wherein the foil housing part (80) comprises a foil housing wall (120), a receiving area (155), a foil receptacle (280), a first cutting edge receptacle (285), a first web (250), a third housing opening (130), and a bending space (286).wherein the bending space (286) adjoins the foil housing wall (120) on the inside and extends between the first web (250) and the third housing opening (130) along the insertion axis (115), wherein the foil receptacle (280) adjoins the foil housing wall (120) on the inside and the first web (250) separates the foil receptacle (280) from the first cutting receptacle (285), wherein the foil receptacle (280) and the first cutting receptacle (285) extend along the insertion axis (115) from the receiving area (155) in the direction of the third housing opening (130) and open into the bending space (286).

A switching device comprises a shell, a contact system and two electromagnetic systems, the contact system and the two electromagnetic systems are arranged in the shell, the two electromagnetic systems are oppositely arranged on the two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move. The upper armatures of the two groups of electromagnetic systems are connected through a linkage shaft, the contact system comprises a static contact and a moving contact 5 arranged on a contact support 4, the linkage shaft is connected with the contact support, and the two groups of electromagnetic systems respectively drive the contact support to move through the linkage shaft. The contact support drives the moving contact to be in contact with or separated from the static contact, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

A contact system of an isolating switch and the isolating switch, the isolating switch comprises an operating mechanism and at least one contact system, the operating mechanism and the contact system are stacked, and the operating mechanism is connected with a rotating part of the contact system; the contact system comprises a shell, a moving contact assembly, a static contact and an arc extinguish chamber, the moving contact assembly, the static contact and the arc extinguish chamber are arranged in the shell, the moving contact assembly comprises a rotating part and a moving contact, the arc extinguish chamber comprises an arc extinguish cover, a plurality of arc extinguish grid pieces and a permanent magnet, and the permanent magnet is arranged on the arc extinguish cover and located between the arc extinguish grid pieces and the rotating part. The arc-extinguishing grid sheets are provided with gaps facing the permanent magnet, the gaps of the plurality of arc-extinguishing grid sheets form an arc channel, during opening action, an arc passes through the arc channel along with the moving contact, at the moment, the arc is located in the arc channel formed by the arc-extinguishing grid sheets and is concentrated on one side of the permanent magnet, and under the action of Lorentz force generated by the permanent magnet, the permanent magnet is separated from the moving contact. The arc can be quickly led to the arc extinguishing grid sheets, the arcing time is shortened, and the breaking reliability of the switching device is improved.

The invention relates to the technical field of non-variable-capacity pump set parallel control, and discloses a multi-blower parallel air volume control method, which comprises the following steps of: acquiring the real-time rotating speed and the real-time input power of a driving frequency converter of each single blower in a parallel system, and superposing a periodic rotating speed perturbation signal at a common pressure given value to obtain a multi-blower parallel air volume control result; power response amplitudes of all single blowers are extracted synchronously, the change rate of real-time power relative to the rotating speed is calculated to generate a power response gradient representing the energy conversion characteristic of the unit, the unbalanced blowers are recognized according to deviation parameters of the power response gradient relative to the global average value, the rotating speed instruction gain of the blowers is reduced, and the unit energy conversion characteristic is obtained. According to the method, load distribution is converted into an active adjustment mechanism based on the physical characteristics of the impeller, accurate identification of the offset of the physical operation sites of the parallel unit is achieved, and the accuracy of the offset of the physical operation sites of the parallel unit is improved on the premise that branch flow sensing hardware is not needed. And the recessive surge risk caused by single-machine performance discretization is inhibited.

The utility model relates to a relay and an electric meter. The relay comprises an electromagnetic pushing system, the electromagnetic pushing system comprises a coil and an armature assembly, the armature assembly is located on one side of the coil in the first direction, and the axis direction of the coil is in the third direction; the contact system is located on the third direction side of the electromagnetic pushing system and comprises a static contact unit and a movable contact unit which are arranged in the third direction, the movable contact unit is connected with the armature assembly, one end of the movable contact unit is fixed to the relative position of the static contact unit, and the other end of the movable contact unit is suitable for being driven by the armature assembly to be close to or away from the static contact unit; the terminal group is positioned on one side, deviating from the electromagnetic pushing system, of the contact system and is connected with the static contact unit and the movable contact unit; wherein the first direction is perpendicular to the third direction. According to the invention, the space layout of the relay is more reasonable, the structure is more compact, the occupied space is effectively reduced, the relay can be better matched with other parts, and the applicability is good.

A circuit breaker provided by the present invention comprises a housing and internal elements, the internal elements at least comprise an upper arc extinguish chamber, a lower arc extinguish chamber, a double-breakpoint contact system, a first wiring terminal, a second wiring terminal, an overload release, a mechanism and a rotating shaft, and the double-breakpoint contact system comprises a single-breakpoint moving contact, a double-breakpoint moving contact and a static contact. The mechanism drives at least one rotating shaft, the double-breakpoint contact system is arranged between the upper arc extinguish chamber and the lower arc extinguish chamber, and the single-breakpoint moving contact and the double-breakpoint moving contact are respectively driven by two rotating shafts. When the circuit breaker is subjected to breaking and manual operation opening, the mechanism drives the two sets of rotating shafts to move together so that the two breakpoints can be kept disconnected at the same time, the opening distance is large, the isolation performance is good, and high-short-circuit current under high voltage can be broken.

The application relates to the field of low-voltage electrical apparatus, in particular to a contact system and a switch electrical apparatus comprising the same, the contact system comprising a pivotally arranged rotary contact structure and at least one movable contact structure, the rotary contact structure comprising a rotary contact, the rotary contact comprising a rotary contact part, the movable contact structure comprising a movable contact, the movable contact comprising a movable contact part, the rotary contact part and the movable contact part being combined to make the rotary contact and the movable contact closed when the rotary contact is in a closed position; the movable contact structure further comprising an elastic member matched with the movable contact; during the breaking process of the rotary contact and the movable contact, the elastic member stores energy when the rotary contact part drives the movable contact part to move from an initial position to a disengagement position, the rotary contact continues to rotate, the elastic member releases energy to drive the movable contact part to reset to the initial position; the contact system and the switch electrical apparatus have high breaking capacity.

The utility model relates to the field of low-voltage electric appliances, in particular to a circuit breaker, a main loop of which comprises an operating piece, an operating mechanism in transmission fit with the operating piece, a contact system and an arc extinguishing system matched with the contact system, and the operating mechanism comprises a locking piece and a tripping piece which are in hasp fit. The contact system comprises a moving contact and a static contact which are in transmission connection with the operating mechanism; a sampling device is coupled with a contact system, a control system is at least used for controlling a tripping system to act when short-circuit current and / or overload current flows through the contact system, and the tripping system acts to be used for releasing hasp matching of a tripping fastener and a locking fastener so as to drive a circuit breaker to be opened; the circuit breaker is suitable for various current protection threshold requirements.

The invention relates to the technical field of worm size detection, and discloses a worm key size precision detection device and a detection method, the worm key size precision detection device comprises a detection table, the detection table is provided with a detection box used for detecting a worm, and the detection box is internally provided with a feeding assembly used for driving the worm to move. According to the scheme, flexible positioning and mechanical linkage design is adopted, and an efficient and accurate detection process is achieved. The core lies in that the feeding assembly and the positioning structure cooperatively operate, on one hand, a worm can adjust the position in a self-adaptive mode through an elastic floating mechanism, and stable clamping is ensured through cooperation with a multi-direction rolling contact system; and on the other hand, the moving part is combined with hydraulic drive to achieve horizontal conveying, meanwhile, gear and rack transmission is converted into vertical positioning, and therefore the worm can be accurately positioned in the conveying process. And meanwhile, the scheme also comprises multiple anti-separation mechanisms, so that the operation reliability is ensured, the operation convenience and the process stability are both considered in the overall design, and an efficient solution is provided for worm detection.

A switching device comprises an electromagnetic system and two contact systems, the electromagnetic system comprises a coil assembly, a movable iron core and a static iron core, a magnetic gap is reserved between the movable iron core and the static iron core, each contact system comprises a movable contact assembly and a static contact assembly which are matched with each other, and the electromagnetic system is arranged between the two contact systems. The movable iron core is in linkage connection with a linkage piece, the two ends of the linkage piece are in linkage connection with the movable contact assemblies of the two contact systems respectively, under driving of the electromagnetic system, the moving tracks of the movable contact assemblies, the movable iron core and the linkage piece are all parallel to the central axis of the linkage piece, and the central axis of the linkage piece is connected between the two ends of the linkage piece. According to the utility model, the two contact units are respectively arranged at the two opposite sides of the electromagnetic system, the two ends of the linkage piece can drive the moving contact assembly, and meanwhile, the moving tracks of the moving contact assembly, the moving iron core and the linkage piece are parallel to the central axis of the linkage piece, so that the occupied space is small, and the size of the switching device is reduced.

The utility model relates to the field of low-voltage electric appliances, in particular to a circuit breaker, a major loop structure of the circuit breaker comprises an operating piece, an electromagnetic system, a contact system, an arc extinguishing system and a control system, the operating piece slides in a reciprocating manner to drive the contact system to be closed and opened through the electromagnetic system, and the control system controls the electromagnetic system to act to drive the contact system to be closed and opened; the main loop structure further comprises a sampling device, and when overload and / or short-circuit current flows through the contact system, the electromagnetic system is controlled by the control system to drive the contact system to be disconnected; the circuit breaker is simple in structure and can be suitable for various current protection thresholds.

A switching device, comprising a shell, and a contact system and two electromagnetic systems which are respectively arranged in the shell, wherein the two electromagnetic systems are oppositely arranged on two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move; the upper armatures of the two electromagnetic systems are connected by means of a linkage shaft; the contact system comprises static contacts and moving contacts that are arranged on contact supports; the linkage shaft is connected to the contact supports, and the two electromagnetic systems respectively drive the contact supports to move by means of the linkage shaft, so that the contact supports drive the moving contacts to be in contact with or separated from the static contacts, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

Devices and associated method are shown that include a mass movably coupled over a substrate. In selected configurations, a controlled contact system is coupled between the mass and the at least one stopper. Examples are also shown where the controlled contact system includes a first stage contact coupled to a flexible beam and a second stage contact.

The application provides a contact pressure distribution method and system for micro relays, and relates to the technical field of control, which comprises the following steps: obtaining contact system state information, establishing a contact micro-element force-displacement response characteristic, identifying a stress concentration area, adjusting a driving force application path of a moving contact to redistribute contact pressure, and generating a segmented motion control instruction based on a fatigue life constraint. The application can effectively reduce the stress concentration phenomenon on the contact surface, optimize the contact pressure distribution, prolong the service life of the contact, and improve the reliability of the relay.

The invention relates to the technical field of electric tool switches, in particular to a redundant contact electric tool switch which comprises a shell, a mounting structure, a control structure, a sealing structure, a driving structure and a triggering structure. The arrangement of the trigger structure realizes double-point contact, the design of the redundant contact system avoids the problem of poor contact caused by abrasion of a single contact, avoids the problem of repeated disassembly of the switch for maintenance, improves the practicability, and meanwhile, the movable and static contacts are not easy to fall off when being in contact, are strong in stability, and are convenient to maintain. The arrangement of the sealing structure ensures the overall sealing performance inside the switch, avoids the problem of poor contact caused by dust entering the switch, avoids the problem that a sealing ring at the joint of the button and the shell is easy to fall off, and the arrangement of the control structure realizes the switching between a switching mode and a rotating speed adjusting mode. The rotating speed of the electric tool is adjusted by pressing the button, and flexibility is high.

The application discloses a kind of based on workshop thing contact system monitoring abnormal event dynamic scheduling method, the information of production process is monitored by the means of Internet of Things, the information monitored will be uploaded to workshop network;After the basic information of production and manufacturing is extracted from workshop network, the three-target scheduling model of maximum completion time, single machine load and machine total processing time is established, and the basic scheduling method is provided by JAYA algorithm;After workshop Internet of Things system monitoring has abnormal event, the scheduling plan of already scheduling is adjusted locally using rescheduling strategy;After adjusting original scheduling, the maximum completion time and machine deviation degree are evaluated, and the feasibility of conforming to actual processing environment is continued to complete the remaining scheduling operation.The application uses the mode of workshop Internet of Things to improve the response capability to dynamic disturbance, and the dynamic scheduling strategy is committed to improving workshop original scheduling scheme in two aspects of processing efficiency and stability, to obtain effective workshop scheduling plan.

The invention discloses a parallel contact system for a magnetic latching relay and the magnetic latching relay, and belongs to the technical field of electrical switches. The contact system comprises a base and a pair of contact assemblies arranged in parallel, and each contact assembly comprises a zigzag structure formed by a bus bar, a movable contact spring assembly and a static contact. The two movable contact spring assemblies are parallel and electrically connected in parallel. The relay comprises the contact system, a coil assembly, a magnetic steel assembly and a push rod. According to the invention, through parallel connection of the double zigzag structures, current shunting and contact resistance reduction are realized, electromagnetic attraction and repulsive force between the parallel conductors and between the conductors and the bus bars are utilized, the current-carrying capability, large current impact resistance and reliability of the relay are significantly improved, and the size of a product is reduced.

An operating mechanism of a circuit breaker, comprising: a support (1); a rocker arm assembly, a tripping fastener (7), a locking fastener (10), and a refastening piece (9) that are rotatably provided on the support (1), separately; a first crank (14); an energy storage spring (4); a sliding rail (1-0) fixedly arranged relative to the support (1); a sliding block (18); a first connecting rod (16); a second connecting rod (19); a second crank (22) rotatably arranged about a sixth center (6S); a third connecting rod (23); and a third crank (25) rotatably arranged about a seventh center (7S), wherein the third crank (25) is located on one side of the operating mechanism in the horizontal direction of the operating mechanism. Switching between three working states can be achieved without connection to a contact system; moreover, the layout of the contact system can be changed, so as to provide a larger installation space for an arc-extinguishing chamber.

The utility model relates to low -voltage electrical apparatus class product field, a kind of emergency starting device operating mechanism, including upper shell, upper cover and moving contact system, upper shell is equipped with track, the slider capable of moving along the track extension direction is installed in this track, horizontal through guide slot is opened in slider, the two extension ends of this guide slot are at different heights, and connecting shaft is installed in guide slot The two ends of connecting shaft are fixedly connected with two push rods respectively, and the lower end of push rod is connected with moving contact system;Dialing device is arranged between upper cover and upper shell, the action end of dialing device is connected with slider to push slider to move in track, and the operating mechanism can be closed when the main contact is closed by management personnel manual operation when the circuit appears power failure or coil attraction problem, so that the main contact is completely closed.

The invention provides a switching device of a contactor and the contactor, and relates to the technical field of low-voltage electric appliances, the switching device comprises a rocker arm assembly and a travel switch which are arranged in a linkage mode, the rocker arm assembly is further used for being in linkage with a contact system and an electromagnetic system, the electromagnetic system comprises a pull-in coil and a holding coil which are connected in parallel, and the travel switch is connected with the pull-in coil; the electromagnetic system drives the rocker arm assembly to rotate, so that the rocker arm assembly drives the contact system to be closed, the rocker arm assembly drives the travel switch to act, so that the suction coil is disconnected, and closing is completed through the holding coil. The suction coil and the holding coil jointly act to drive the rocker arm assembly to rotate initially in a high-power mode, once the rocker arm assembly triggers the travel switch, the suction coil is disconnected, and closing continues to be conducted through the low-power holding coil so as to save energy. The rocker arm assembly triggers the travel switch, so that a pure mechanical structure is used for controlling coil attraction, switching of two working modes is kept, the number of electronic devices is reduced, reliable working of products is guaranteed, and cost is reduced.

The invention discloses a load switch and an ammeter, and relates to the technical field of low-voltage apparatuses. The load switch comprises a pushing system, a contact system and a wiring end assembly which are sequentially arranged along a first direction, the contact system comprises a moving contact and a static contact, the wiring end assembly comprises a moving contact wiring end and a static contact wiring end which are sequentially arranged along a second direction, the moving contact wiring end is connected with the moving contact, the static contact wiring end is connected with the static contact, and the moving contact wiring end is connected with the static contact. The first end of the moving contact is fixed relative to the fixed contact, the second end of the moving contact moves relative to the first end, the second end is provided with a moving contact, the fixed contact is provided with a fixed contact, the fixed contact is located on the side, close to the pushing system, of the moving contact, and the pushing system is used for driving the moving contact to move so that the moving contact can be combined with or separated from the fixed contact. The load switch can solve the problems of large assembly space occupation and poor applicability caused by unreasonable layout of the load switch in the prior art.

A test system for high-voltage and high-current testing of power semiconductor devices comprised in a wafer which has a test machine, a needle probe card and a contacting system is provided. The contacting system has a wafer housing conductive portion and a test electrical circuit closing contact conductive portion. The test electrical circuit closing contact conductive portion has a shape and an extension to determine respective straight and continuous current conduction paths from each power semiconductor device to at least one test electrical circuit closing terminal arranged along a predetermined non-variable direction. Each current conduction path extends along a direction parallel to or coincident with the predetermined non-variable direction. A contacting system is also provided.

The invention discloses a switching device manual operation mechanism with a power state indication function, and belongs to the technical field of low-voltage apparatuses. Comprising an operation panel and a display support which are adjacently arranged in two vertical planes. The two rotating shafts are in transmission connection with the first moving contact and the second moving contact respectively; the first connecting rod assembly connects the operation panel and the rotating shaft. The second connecting rod assembly connects the rotating shaft and the display support. The first indicating piece and the second indicating piece are arranged on the second connecting rod assemblies on the two sides of the display support. When the operating panel rotates, the rotating shaft and the indicating sheets are driven to act through the connecting rod assembly: when any moving contact is contacted with the static contact, the corresponding indicating sheet is arranged on the display bracket; when the two circuits are disconnected, the two indicating sheets are separated from the display support. The state indication mechanism and the contact system share the same mechanical transmission path, and the action of the indication sheet is completely determined by the actual position of the moving contact, so that false indication caused by faults or asynchronization of a traditional independent indication module is fundamentally avoided, and the operation safety is remarkably improved.

The invention discloses a moving contact structure, a contact system and an isolating switch, and relates to the field of low-voltage electric appliances. The invention provides a moving contact structure. The moving contact structure comprises a contact support, a first contact and a second contact, wherein the first contact and the second contact are coaxially arranged on the contact support side by side; the first contact can be electrically connected with a static contact of the contact system in a clapping manner, and the second contact can be electrically connected with the static contact of the contact system in a clamping manner; or, the first contact can be electrically connected with the static contact of the contact system in a clamping manner, and the second contact can be electrically connected with the static contact of the contact system in a clapping manner. According to the moving contact structure obtained by the above design, the short-time withstand current performance can be improved through the first contact or the second contact which is connected in a clamping manner when the arc voltage is increased, so that the moving contact structure is prevented from being burnt, the reliability of the moving contact structure is improved, and the service life of the moving contact structure is prolonged.