3620results about "Protective switch operating/release mechanisms" patented technology

The invention relates to the technical field of mine safety, and discloses a coal mine underground gas monitoring method and system. The method comprises the following steps: acquiring methane absorption intensity data by adopting a tunable diode laser absorption spectrum, converting the methane absorption intensity data into gas concentration based on a Lambert-Beer law, performing temperature and humidity compensation, calculating a transmission priority according to concentration deviation to form a data packet, and establishing a spatial interpolation model by utilizing multipoint data to predict gas concentration distribution. Calculating a risk assessment index based on the predicted distribution, automatically adjusting the rotating speed of the ventilator, and controlling the electrical equipment to be powered off. According to the method, the technical problems of low detection precision, incomplete monitoring coverage, low data transmission efficiency and lack of prediction and early warning capabilities in the existing underground coal mine gas monitoring method are solved. And the accuracy of gas concentration detection and the intelligent level of gas monitoring are improved.

The utility model belongs to the technical field of low-voltage switches, and particularly relates to a free tripping structure for a rotary disconnecting switch, the rotary disconnecting switch comprises a knob and a switch assembly composed of a plurality of switch units, and the free tripping structure is connected between the knob and the switch assembly; the free tripping structure comprises a mechanism support and a multi-connecting-rod mechanism with an energy storage piece, the multi-connecting-rod mechanism with the energy storage piece comprises an output connecting rod, the output connecting rod is in hinged fit with the mechanism support through a first hinged shaft, the output connecting rod is provided with an output part in transmission fit with the switch assembly, and the output connecting rod rotates around a point D and has a switching-off position and a switching-on position. And a first power-assisted elastic piece is connected between the output connecting rod and the mechanism bracket. On the basis of an existing free tripping structure, the first power-assisted elastic piece is arranged for the output connecting rod located at the transmission tail end of the multi-connecting-rod mechanism, the opening and closing force output by the multi-connecting-rod mechanism can be freely adjusted through the first power-assisted elastic piece, and the opening and closing action of the switch is more reliable.

The invention discloses an intelligent control method and system based on pole-mounted circuit breaker equipment, and relates to the technical field of power grid control, and the method comprises the steps: collecting environmental data of a pole-mounted circuit breaker, employing a Kalman filtering fusion algorithm, outputting a fusion state vector, constructing time series data, employing a photon to calculate an accelerated time series neural network, and obtaining a time series neural network model; and performing complex field mapping and optical phase shift modulation on the extracted features, and predicting a future current value. According to the method, complex field mapping is carried out on features extracted by a time convolution layer, the expression ability of nonlinear features is enhanced, optical phase shift modulation is introduced, phase and amplitude information is further adjusted, the nonlinear modeling ability of time sequence features is improved, and multi-modal data fusion and multi-scale consistency verification of fractal dimensions are combined, so that the time sequence features of the fractal dimension are optimized. Time scale deviation of different data sources is eliminated, and effectiveness and consistency of multi-dimensional feature fusion are improved.

Embodiments of the present technology include a circuit breaker with a tripping mechanism. The tripping mechanism includes a latch and a latch lever, according to some embodiments. The latch lever may be coupled to a toggle via a joint arm in some embodiments. The latch lever may also be coupled to a change lever via a buckled shackle. In some embodiments, the buckled shackle includes a first section, a second section, and a bend between the first section and the second section.

The invention relates to the technical field of repulsive force switches, and particularly discloses a repulsive force mechanism buffer device based on magnetorheological fluid, which comprises a piston type magnetorheological damper, a magnet exciting coil, a displacement sensor and a control system, the magnet exciting coil is wound on the outer surface of a piston assembly of the piston type magnetorheological damper; the piston type magnetorheological damper adjusts the rheological property of magnetorheological fluid through a magnetic field generated by the magnet exciting coil. The displacement sensor is used for detecting the movement of a repulsive force disc in the repulsive force mechanism; the excitation coil and the displacement sensor are electrically connected with the control system; the control system regulates the power supply current intensity of the magnet exciting coil at least according to detection information of the displacement sensor; according to the repulsive force mechanism buffering device based on the magnetorheological fluid, the magnet exciting coil is used for generating a magnetic field, discharging control is conducted on the coil through the capacitor, and therefore real-time adjustment of the magnetorheological fluid damper is achieved, impact and vibration of the repulsive force mechanism are effectively reduced, the operation stability of equipment is improved, and the service life of the equipment is prolonged.

The utility model relates to the field of circuit breakers, in particular to an electromagnetic locking molded case circuit breaker. Comprising a housing including a mounting seat and a cover plate; an electromagnet is arranged in the first side wall of the mounting seat and is electrically connected with the contact system; the cover plate comprises a front panel and a second side wall; a magnetic attraction sliding part sliding front and back is installed in the second side wall, a first sliding abutting part is arranged at the front end of the magnetic attraction sliding part, and a first inclined face is arranged on the first sliding abutting part. A locking rod is arranged in the front panel, a reset spring is arranged on the locking rod, a second sliding abutting portion abutting against the first inclined face is arranged on the rear side of the locking rod, a second inclined face is arranged on the second sliding abutting portion, and the second inclined face abuts against the first inclined face. The operating mechanism comprises a release handle, and a locking hole matched with the locking rod is formed in the release handle; the locking rod prevents the release handle from rotating when external force is received, and the electromagnet attracts the magnetic attraction sliding part to achieve reinforced fixation between the installation base and the cover plate.

The invention discloses a small residual-current circuit breaker, which comprises a shell, an operating mechanism, a residual-current release and a transmission rod, when the electric leakage tripper is actuated, an ejector rod of the electric leakage tripper pushes the transmission rod, so that the transmission rod rotates from a reset position to an actuating position, and the transmission rod pushes the mechanism assembly to unlock in the rotating process, so that the operation mechanism is converted from closing to tripping. The rotation center of the handle and the rotation center of the mechanism assembly are both located in the first space, and the handle is located between the electric leakage release and the mechanism assembly in the length direction; the handle is provided with a reset part, and after the electric leakage release is actuated, the reset part impacts the transmission rod to enable the transmission rod to return to the reset position from the actuation position in the process that the handle is converted from closing to tripping; the position relation of the electric leakage tripper, the operating mechanism and the like is rearranged, so that the product structure is more compact, and the size of the circuit breaker in the length direction is reduced.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a reclosing mechanism, which comprises a shell, a circuit breaker handle is rotationally arranged in the shell, an operating rod and at least three gears meshed in sequence are further rotationally arranged in the shell, and the tooth number of each gear is gradually increased in sequence. The two gears located on the two sides are a small gear and a large gear respectively, the number of teeth of the small gear is smaller than the number of teeth of the large gear, the operating rod is fixedly connected with the small gear, and the large gear is in transmission connection with a circuit breaker handle. Speed reduction and torque increase are realized through the gear train, so that the force required to be applied when a user manually operates the handle of the circuit breaker is remarkably reduced, the operation intensity is reduced, the convenience of manual reclosing is improved, and the manual reclosing device is particularly suitable for a large-current circuit breaker or an occasion requiring a relatively large operation torque.

A compensation bimetal having at least two bends configured to reverse the direction of the compensation bimetal to form “S” curves is disclosed. The first end of the compensation bimetal is coupled with a differential lever while the second end is coupled with a tripping pin, and the length of the multi-metallic strip is greater than the distance between the differential lever and the tripping pin. The compensation bimetal may be bimetallic, trimetallic strip, or tetra-metallic. The compensation bimetal with the described configuration compensates for a greater range of ambient temperature fluctuations while preserving sensitivity to thermal tripping due to over-current conditions.

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

The present disclosure relates to a circuit breaker having an energy releasing mechanism of an opening / closing mechanism part, and a circuit breaker according to an embodiment of the present invention comprises: an input latch locking device rotatably formed to restrict or release an input latch according to rotating angles thereof; an interlock movement rail which is installed on a cradle and in which an inspection position, a preparation position, and a driving position are configured; an interlock member for operating at least one among the input latch and a trip latch in a section excluding the inspection position, the preparation position, and the driving position while vertically moving in association with a relative movement of the interlock movement rail; and at least one link member connected between the interlock member and the input latch locking device and switching a linear movement in a vertical direction of the interlock member to a rotation movement, thereby rotating the input latch locking device.

The invention discloses a molded case circuit breaker, which comprises a shell, and an electric operating mechanism is arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a rotating block and a shifting rod, a sliding block which is arranged on the shell in a sliding manner and can drive the shifting rod to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reduction assembly which can drive the operating shaft to rotate, and the operating shaft is in linkage connection with a shifting shaft block; the sliding block is provided with a matching groove corresponding to the shifting shaft block, the operation shaft rotates to drive the shifting shaft block to shift in the matching groove so as to drive the sliding block to slide, the shell is provided with a cover plate capable of shielding the operation hole position in a sliding mode, and the shell is further provided with a rotating lock and a tripping button located on one side of the rotating lock. By arranging the locking microswitch, the manual microswitch, the first microswitch and the second microswitch, signal feedback of a manual operation state, a rotating lock locking state and a current circuit breaker state can be realized.

The utility model discloses an operation locking mechanism of a molded case circuit breaker, which comprises a shell and an electric operation mechanism arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a driving lever, a sliding block which is arranged on the shell in a sliding manner and can drive the driving lever to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reducing assembly which can drive the operating shaft to rotate, and a cover plate which can shield the operating hole site is arranged on the shell in a sliding manner; the shell is also provided with a rotating lock and a tripping button positioned on one side of the rotating lock, and is characterized in that the shell is provided with a manual microswitch positioned on one side of the cover plate, and the shell is provided with a locking microswitch positioned on one side of the rotating lock. By arranging the locking microswitch and the manual microswitch, signal transmission of a manual operation state and a rotating lock locking state can be achieved, limiting of other components can be achieved through rotating locking of the rotating lock, misoperation is prevented, and operation safety is improved.

A breaking mechanism, an operating unit and a measuring switch, comprising: a housing formed by splicing a first housing and a second housing which cooperate with each other, an installation space being formed between the first housing and the second housing, and an installation hole being arranged between the first housing and the second housing and being perpendicular to the length direction of the housing; the breaking unit is arranged in the mounting space and comprises a moving contact assembly rotatably arranged in the mounting space and a static contact matched with the moving contact assembly; and the magnetic flux unit is mounted in the mounting hole. The breaking unit and the magnetic flux unit form a complete module, the accuracy of the position of the magnetic flux unit during installation is guaranteed, meanwhile, the position and structure for installing the magnetic flux additionally arranged in the middle cover are omitted, the independent installation holes have the limiting and guiding effects, the problem of magnetic flux motion deviation can be effectively solved, and the installation efficiency is improved. The stability and accuracy of the magnetic flux motion trail in the switching-on and switching-off processes are ensured, and the operation precision of the circuit breaker is greatly improved.

The invention discloses a shunt release of a circuit breaker, and belongs to the technical field of circuit breakers, the shunt release comprises a base, a quick release mechanism, a soft start mechanism and a movable iron core, the two sides of the base are provided with mounting bolts, the mounting bolts are used for fixing the base, the top of the base is provided with an adjusting seat, the two sides of the adjusting seat are connected with the base through connecting bolts, and the adjusting seat is connected with the base through connecting bolts. The top of the adjusting seat is provided with a quick release mechanism, the quick release mechanism is internally provided with an electromagnetic controller, and the electromagnetic controller is internally provided with an electromagnetic coil. The device has the beneficial effects that an adjusting bolt in a compensation mechanism is rotated, the adjusting bolt drives a sliding block to move, and the sliding block moves to further drive a push plate to move; the push plate pushes the other end of the reset spring, so that the reset spring is extruded additionally, the elasticity of the spring is compensated, and the problem that the reset speed of the pull rod is decreased due to elasticity attenuation of the reset spring is effectively solved.

The invention discloses a tripping structure and a circuit breaker, and relates to the low-voltage electrical technical field. The tripping structure comprises a pushing piece, a thermal tripping piece and an electromagnetic tripping assembly, wherein the thermal tripping piece and the electromagnetic tripping assembly are respectively matched with the pushing piece; the pushing piece comprises a first driving surface and a second driving surface which are arranged at an interval; the electromagnetic tripping assembly comprises a push rod; the deformation end of the thermal tripping piece is arranged on one side, deviating from the second driving surface, of the first driving surface; the deformation end of the push rod and the deformation end of the thermal tripping piece independently drive the pushing piece to move through the first driving face, and the second driving face is used for driving the operating mechanism to unlock. According to the tripping structure, through the position arrangement of the pushing piece, the driving force of the thermal tripping piece and the electromagnetic tripping assembly can be directly transmitted to the operating mechanism through the pushing piece, and compared with the existing two-stage transmission arrangement, the tripping structure provided by the invention has the advantages that the transmission links are reduced, the transmission loss is reduced, and the transmission efficiency of the driving force is improved.

The invention relates to the technical field of circuit breaker opening and closing structures, in particular to a circuit breaker mechanical automatic tripping type opening and closing locking holding mechanism which comprises a middle shaft driving rod with a moving contact installed at the front end, and further comprises an opening / closing holding block, an opening / closing locking mechanism, a locking mechanism, a locking mechanism and a locking mechanism, wherein the opening / closing holding block is provided with an embedding and clamping groove and coaxially installed on a rod body of the middle shaft driving rod; the driving part comprises a switching-off driving head and a switching-on driving head which are arranged on the middle shaft driving rod and are positioned on the upper side and the lower side of the switching-off / switching-on retaining block; the opening / closing holding locking sliding block is mounted on the base body on one side of the opening / closing holding block through a connecting spring and is used for locking the closing driving head and the opening driving head respectively during opening / closing; mechanical locking in the opening and closing process can be achieved, kinetic energy needed for overcoming huge attraction of a permanent magnet during opening and closing motion of the circuit breaker is eliminated, and driving force needed by opening and closing motion is reduced. The power supply structure of the eddy current driving circuit breaker is simplified, and high failure rate caused by a complex high-voltage power supply board is avoided.

The utility model relates to the technical field of circuit breaker structures, in particular to a rotating shaft structure of a double-breakpoint molded case circuit breaker, which is characterized in that a rotating shaft main body is of an integral structure design, a contact groove is formed in the rotating shaft main body along the radial direction, the middle part of a moving contact is inserted into the contact groove, and two ends of the moving contact penetrate out along an opening of the contact groove; the static spring shaft and the moving spring shaft are used for being in butt joint with the static contact, the static spring shaft and the moving spring shaft are located on the two sides of the moving contact respectively, the two ends of the contact spring are connected to the static spring shaft and the moving spring shaft respectively, and the moving spring shaft is pulled through elastic tension of the contact spring so that the two sides of the moving contact can abut against the inner side wall of the contact groove respectively. Due to the integral structure design of the rotating shaft main body, the three-phase synchronism of the molded case circuit breaker is consistent, the limit breaking capacity and the operation breaking capacity of the circuit breaker are greatly improved, the safety and the reliability of the circuit breaker in operation are improved, and the electrical life of the circuit breaker is prolonged.

The circuit breaker comprises a moving contact, a static contact, an operating mechanism, a rotating shaft, a traction rod and a push rod, the traction rod is rotatably connected to the operating mechanism, and the push rod is rotatably and slidably connected to the rotating shaft. The moving contact is rotatably connected to the rotating shaft and has a coupling state and an electric repulsive force state; in the coupling state, the moving contact and the static contact are mutually coupled; and in the electric repulsive force state, the moving contact and the static contact are mutually disconnected, and the moving contact swings, acts on one end of the push rod and drives the push rod to move, so that the other end of the push rod acts on the traction rod and drives the traction rod to rotate, thereby realizing the tripping of the operating mechanism. The push rod can rotate and slide on the rotating shaft, so that the push rod can move quickly to realize quick opening of the circuit breaker; the push rod is high in movement stability on the rotating shaft, and the push rod can be conveniently installed on the rotating shaft.

The invention provides a circuit breaker, and relates to the technical field of electrical equipment. The circuit breaker comprises a moving contact, a static contact, a first connecting conductor and a second connecting conductor, the first connecting conductor comprises a first connecting section, a flexible connecting section and a second connecting section which are connected in sequence, the first connecting section is used for being fixedly arranged on an installation shell and used for being connected with an external electrical element, and the second connecting section is connected with the moving contact. The moving contact moves synchronously along with the moving contact; the static contact is connected with the second connecting conductor; under the condition that the moving contact and the static contact are switched on, the first connecting section, the flexible connecting section, the second connecting section, the moving contact, the static contact and the second connecting conductor form a conductive loop, and the current direction of the first connecting section is opposite to that of the second connecting section and is the same as that of the second connecting conductor. The purpose of enhancing the contact pressure of the contact by using the electromagnetic force generated by the current in the closing state is achieved, so that the short-time tolerance performance and the operation reliability of the circuit breaker are improved.

The invention discloses a circuit breaker integrated with an adjustable hydraulic release. The circuit breaker comprises a circuit breaker body, wherein the adjustable hydraulic release, a release transmission mechanism and a main contact system are arranged in the circuit breaker body. The adjustable hydraulic release comprises a release body and an intelligent control module; the tripper body is provided with an oil cup, an oil cup iron core capable of axially moving, a pole shoe, a first coil and an armature, and the armature is linked with the tripping transmission mechanism. When the first coil is electrified, a first electromagnetic force is generated to push the oil cup iron core to move towards the pole shoe and finally attract the armature to trigger a tripping action so as to break a circuit. The intelligent control module is located at the end of the oil cup and can generate second electromagnetic force in the same direction or reverse direction as the first electromagnetic force to act on the oil cup iron core, and rated current adjustment and overload protection adjustment are achieved. According to the design, the problem that the protection characteristic of a traditional hydraulic electromagnetic release is fixed is solved, the number of synthesized ampere turns is equivalently changed through controllable second electromagnetic force, the rated current is flexibly adjusted, and the requirements of different devices are met.

The invention discloses an integrated sealed primary and secondary fusion pole-mounted circuit breaker in the technical field of circuit breakers, and the integrated sealed primary and secondary fusion pole-mounted circuit breaker comprises a case, a push-pull mechanism, a first elastic mechanism and a second elastic mechanism. A plurality of sets of insulating pull rods extending into the circuit breaker body are installed in the case in an up-down sliding mode, the push-pull mechanisms are fixedly installed in a plurality of sets of supports in the case in a rotating mode, and the top ends of the push-pull mechanisms are fixedly connected with the bottom ends of the insulating pull rods. The two sides of the support are symmetrically provided with two groups of first elastic mechanisms connected with the push-pull mechanism, and the problems that the speed of a movable contact block in an existing circuit breaker cannot be effectively buffered when the movable contact block rapidly gets close to or gets away from a static contact block, and the elastic mechanisms in the circuit breaker are inconvenient to efficiently synchronize energy storage and pressure release of a closing spring and an opening spring; and the operation efficiency, the reliability, the synchronism, the arc extinguishing performance and the like of the circuit breaker are not improved.

The invention discloses an adjustable oil damping electromagnetic release applied to a circuit breaker, and belongs to the technical field of release. Comprising an oil cup, an oil cup iron core capable of moving in the axial direction, a pole shoe arranged at the end of the oil cup and a first coil wound around the outer wall of the oil cup, and when the first coil is powered on, first electromagnetic force driving the oil cup iron core to move towards the pole shoe is generated; and the intelligent control module is arranged at the end part of the oil cup and is used for outputting controllable direct current to generate second electromagnetic force in the same direction or opposite direction as the first electromagnetic force, and the release has a rated current adjusting function and an overload protection adjusting function by adjusting the magnitude and the direction of the second electromagnetic force. The controllable second electromagnetic force is introduced into a traditional oil damping electromagnetic release, the rated current specification can be adjusted, the release action time can be adjusted, the advantage that the temperature stability of the oil damping release is good is reserved, and meanwhile the defect that the protection characteristic of the oil damping release cannot be adjusted is overcome.

The present invention relates to an energy storage mechanism for a state-switching operation of an electrical control system. The energy storage mechanism comprises: a housing; an operation assembly, which comprises an energy storage element; an actuating member, which is connected to an electrical control system state-switching unit; a locking assembly; and an unlocking assembly. The energy storage element is connected to the operation assembly and the actuating member, and by means of changing the relative positions of the operation assembly and the actuating member, the energy storage element stores energy; the operation assembly can be connected to the actuating member by means of the locking assembly to be in a locked state; the operation assembly is then driven to move in an opposite direction, and drives the actuating member to move in the same direction, such that the actuating member drives the position state of the electrical control system state-switching unit to change; the unlocking assembly can release the locked state between the operation assembly and the actuating member after receiving a trigger signal; and the actuating member is driven by energy released from the energy storage element to move, such that the position state of the electrical control system state-switching unit is driven to change again. The present invention can complete free tripping and opening, and can realize free tripping.

The utility model provides a controllable electromagnetic release and a miniature circuit breaker, and relates to the technical field of circuit breakers, in order to solve the problem of rapid opening of an intelligent miniature circuit breaker in the prior art, the controllable electromagnetic release comprises a sleeve, a magnetic pushing mechanism, a first coil, a control circuit and a second coil, the first coil and the second coil are wound on the outer side of the sleeve respectively, the two ends of the first coil are connected to a load circuit, the two ends of the second coil are connected with the control circuit, when the load circuit is short-circuited, the first coil drives the magnetic pushing mechanism to cut off a power supply loop, and when the load circuit is short-circuited, the magnetic pushing mechanism drives the magnetic pushing mechanism to cut off the power supply loop. And when the control circuit controls the second coil to be electrified, the magnetic pushing mechanism cuts off the power supply loop. The controllable electromagnetic release can realize active quick release, and is minimum in occupied space and low in cost.

The invention relates to the technical field of circuit breakers, in particular to an electromagnetic leakage circuit breaker which comprises a shell, a first wiring terminal and a second wiring terminal are arranged at the upper end and the lower end of the shell respectively, a leakage tripping assembly is arranged in the shell, and the leakage tripping assembly comprises a leakage tripper located above a switching-on and switching-off main body. An ejector rod is arranged on the electric leakage tripper, a locking piece is arranged at the output end of the ejector rod, a deflection piece is arranged on the outer side of the locking piece, and a pushing piece is arranged on the outer side of the deflection piece; a zero-sequence current transformer is arranged on the outer side of the electric leakage tripping assembly and used for detecting whether flowing current is unbalanced or not, when the zero-sequence current transformer detects the unbalanced current, the zero-sequence current transformer triggers an electric leakage tripper to act, the electric leakage tripper enables an ejector rod to extend, the output end of the ejector rod pushes a locking piece to rotate, and the locking piece is locked. And when the locking of the deflection piece is released, the deflection piece drives the pushing piece to push the opening and closing main body, so that the reliability of the circuit breaker is improved.

The utility model relates to a handcart type switching device for power supply or distribution, in particular to a circuit breaker. The circuit breaker comprises a fixed base, a mechanism box and a three-phase solid-sealed polar pole are arranged on the fixed base, an opening and closing mechanism for driving the three-phase solid-sealed polar pole to conduct opening and closing is arranged in the mechanism box, and the opening and closing mechanism comprises an electromagnetic mechanism and a permanent magnet maintaining mechanism which are integrated in the mechanism box and used for driving the closing action. An output shaft is arranged on a movable iron core of the electromagnetic mechanism, the permanent magnet holding mechanism and the repulsive force mechanism both act on the output shaft, so that each stage in the opening and closing process can be rapidly completed, the repulsive force mechanism is high in response speed, needed repulsive force can be rapidly generated, and the reliability of the opening and closing operation is improved. The permanent magnet holding force is overcome, rapid opening is realized, the opening time is shortened, and the opening speed is obviously improved.

A plug-in circuit breaker comprises a shell, an operating mechanism, a static contact and a moving contact, a closing handle and an opening handle of the operating mechanism are respectively arranged on the shell in a sliding mode, a closing locking piece is assembled in a rotating mode and is respectively matched with the closing handle and the opening handle, the contact mechanism further comprises a contact spring, and the moving contact and the contact spring are respectively arranged in a rotating mode. When the closing handle is pressed to a closing position, the contact spring firstly drives the moving contact to switch on the contact mechanism and provide contact pressure for the moving contact, the closing handle then closes the solid-state electronic switch, the closing handle is in limiting fit with the closing locking piece, and when the opening handle is pulled to an opening position, the solid-state electronic switch is closed. The switching-off handle drives the switching-on locking piece to release the limiting cooperation with the switching-on handle, so that when the switching-on handle moves to the switching-off position, the solid-state electronic switch is firstly switched off, and then the moving contact is driven to switch off the contact mechanism. According to the invention, the mechanism of the operation mechanism is simplified, misoperation in the operation process can be prevented, and the reliability and the use safety of the product are improved.

The invention discloses a novel permanent magnetic mechanism suitable for a permanent magnetic circuit breaker and a ring main unit, which is characterized in that a static iron core and a movable iron core are oppositely arranged in an aluminum alloy shell along the axial direction, an internal pull rod penetrates through the axis of the aluminum alloy shell, and the internal pull rod movably penetrates through the static iron core and is connected with the movable iron core; a shaft fixing ring is movably arranged on an inner pull rod of the aluminum alloy shell, the shaft fixing ring movably abuts against the side, away from the static iron core, of the movable iron core, and the two sides of the shaft fixing ring are axially limited through a locking nut and a total stroke adjusting nut which are connected to the inner pull rod in a threaded mode. The mechanism is provided with a total stroke adjusting mechanism, an overtravel adjusting mechanism and a switching-on and switching-off speed adjusting mechanism, respective adjustment is achieved through special nuts, the problem of synchronous change of the opening distance and the overtravel of a traditional mechanism is solved, an aluminum alloy shell and a closed magnetic circuit are adopted, magnetic leakage is reduced, the magnetic field utilization rate and the impact resistance are improved, and spring pre-tightening force is changed through spring adjusting nuts; the switch-on and switch-off speed is accurately controlled, various loads are adapted, and the breaking risk is reduced.

The spring operating device comprises a front plate, a middle plate and a rear plate which are sequentially arranged from outside to inside, a first cavity is defined by the front plate and the middle plate, a second cavity is defined by the middle plate and the rear plate, and the spring operating device comprises an electric-manual energy storage mechanism fixedly installed on the front plate; the energy storage shaft penetrates through the front plate and the middle plate; the energy storage clutch mechanism is positioned in the first cavity; and the output shaft penetrates through the first cavity and the second cavity, and when the cam of the energy storage shaft drives the cam roller to act, the output shaft rotates to enable the mechanism output connecting rod to actuate the circuit breaker to be closed and enable the opening spring on the opening spring guide rod to store energy. Compared with the prior art, the spring operating device for the circuit breaker has the advantages of simplified assembly and high function integration level.