9052 results about "Electromagnet" patented technology

A system, including: an ear worn device configured to provide audio to a user's ear; a switch configured to receive physical contact from the user and, in response, alter an activation state of the switch; and a case configured to receive the ear worn device when not in use, wherein the case includes an electromagnet configured to magnetically attract the ear worn device, wherein changing the activation state of the switch causes the electromagnet to reduce attraction to the ear worn device to allow the user to more easily remove the ear worn device from the case.

The invention belongs to the technical field of automatic assembly, and discloses an automatic assembly system and method for a large nut of a water turbine ball valve, and the system comprises a mechanical arm, an end effector and an intelligent nut tightening control system. The end effector integrates an electromagnet adsorption mechanism, a servo drive rotating mechanism, a floating compensation mechanism and a visual recognition mechanism, nuts of different specifications are grabbed in a self-adaptive mode through an electromagnet, submillimeter-level accurate positioning is achieved through a laser galvanometer stereo camera, and the assembling posture is automatically adjusted in combination with the floating compensation mechanism. The intelligent control system adopts a staged tightening strategy, performs real-time monitoring through a torque sensor, and has a dual protection mechanism. The hydraulic turbine ball valve large nut assembling machine achieves full-automatic assembling of hydraulic turbine ball valve large nuts, has the advantages of being high in assembling efficiency, high in positioning precision, high in adaptability, reliable in quality and the like, solves the problems that manual assembling is large in labor intensity, many in potential safety hazards, poor in quality consistency and the like, and remarkably improves the assembling quality and efficiency of key parts of a hydropower station.

A morticed bolt keep to cooperate with a lock having a latch bolt which is slidable between a retracted position and an extended position. The morticed bolt keep comprises: an elongated body (5) to be positioned inside a hollow tubular member; a cavity to receive the latch bolt in its extended position; a latch bolt engager (25) which is displaceable between a rest state and an actuated state; a magnetic actuator (31, 32) to displace the latch bolt engager from its rest state to its actuated state upon activation; and an electromagnet (50) cooperating with a magnetic catch (55) fixed to the magnetic actuator, the electromagnet being configured to temporarily attract the magnetic catch to maintain the latch bolt engager in its actuated state.

The invention belongs to the technical field of geological exploration, particularly relates to a high-adaptability multi-type geological exploration sampling device and an accurate sampling method.The high-adaptability multi-type geological exploration sampling device and the accurate sampling method aim to solve the problems that a drill bit is stuck and stratified sampling is difficult, and the high-adaptability multi-type geological exploration sampling device comprises a base, a vertical plate, a lifting plate and a driving cylinder with the drill bit; a first annular groove is formed in the outer wall of the driving cylinder and matched with the first circular ring, downward-pressing drilling and upward-lifting resetting of the drill bit are achieved, a second annular groove is formed in the drill bit, and the flow direction of hydraulic oil is controlled through a second circular ring connected with a fixing rod; during lifting, hydraulic oil is injected into the second hydraulic channel, the trapezoidal collecting box extends out to scrape hole wall samples, the electromagnet and the iron block are matched to adjust the position of the second circular ring, the working states of the teeth and the collecting box are switched, drill bit jamming is reduced, hole wall sampling at any depth is supported, and exploration efficiency is improved.

The invention provides a multi-dimensional supporting leg structure for lightweight steel ring splicing equipment, and relates to the field of tunnel engineering. The mounting base is fixedly connected with the frame, the telescopic driving mechanism is arranged between the mounting base and the supporting leg assembly, the angle adjusting mechanism is arranged between the cylinder barrel and the mounting base, and the self-locking mechanism is used for locking the cylinder barrel and the piston rod when the driving unit fails. The telescopic driving mechanism is composed of a cylinder barrel, a piston rod and a driving unit, the angle adjusting mechanism is driven through a first rotating shaft and a second rotating shaft which are perpendicular to each other and corresponding rotation, so that the cylinder barrel achieves double-shaft swing adjustment, the self-locking mechanism is composed of a locking rack, a movable tooth claw, a reset spring, an electromagnet and a permanent magnet, and power-on unlocking and power-off self-locking are achieved. According to the structure, the supporting polygon is obviously enlarged under the complex basic condition, the anti-overturning stability of equipment is improved, reliable supporting is kept when a hydraulic system fails, and the safety and adaptability of steel ring splicing operation in a tunnel are improved.

The invention relates to the technical field of motor shaft size detection, in particular to motor shaft size detection equipment which comprises a detection table, a fixing mechanism, a length detection mechanism, a diameter detection mechanism and a cleaning mechanism. The length detection mechanism comprises a top plate, a detection plate, a first laser distance measuring sensor and a moving assembly, the cleaning mechanism comprises a transverse plate, an electromagnet, a sponge eraser, a telescopic assembly, a rotating assembly and a transmission assembly, and the diameter detection mechanism comprises a sliding frame, a sliding assembly and two second laser sensors. The length of the motor shaft can be detected, the diameter of the motor shaft can be obtained by arranging the two second laser sensors, the length and the diameter of the motor shaft can be synchronously detected by using one detection device, and the size detection efficiency of the motor shaft can be improved.

The invention discloses size detection equipment for casting perforation processing, and relates to the technical field of size measurement. The device comprises a base, a supporting plate and a displacement assembly. The detection part goes deep into a workpiece hole through the contact ball, and the laser emitter and the light sensor are used for detecting the contact position, thereby realizing high-precision size measurement. The displacement assembly adopts the design of a negative pressure rotating cylinder and a resistance sliding rod, adjusts the displacement of a contact ball according to the rotating speed, and flexibly adapts to different hole requirements. Through the control of the planetary gear and the electromagnet, the contact ball can rotate to realize multi-angle detection. The detection table is driven by a central electric cylinder and an edge inclination control electric cylinder to stably adjust the posture of a workpiece. The device is high in automation degree and convenient to operate, and overcomes the defects of low precision, poor efficiency and single-direction detection of traditional manual measurement.

The invention provides a numerically-controlled machine tool workpiece auxiliary positioning mechanism and a positioning method. The numerically-controlled machine tool workpiece auxiliary positioning mechanism comprises a positioning assembly, and the positioning assembly comprises a bottom plate, four limiting seats, a driving rod, a driving disc, a sliding block, an L-shaped connecting rod, a supporting rod, a positioning seat, a limiting groove, a positioning clamping plate, a sliding seat, a sliding rail, a first electromagnet, a supporting spring and two guide rods. Under cooperation of structures such as the L-shaped connecting rods, the supporting rods, the sliding blocks and the positioning bases, the four positioning clamping plates move synchronously, and therefore when a workpiece is clamped, automatic positioning of the workpiece can be achieved, and the workpiece is made to move to the center position of the bottom plate; compared with the prior art, when a workpiece is clamped, automatic positioning of the workpiece can be achieved, the workpiece is made to move to the center position of the bottom plate, when the workpiece is rectangular, the corresponding supporting springs can be compressed in a self-adaptive mode, then the four positioning clamping plates can be tightly attached to the workpiece, and the positioning effect on the workpiece is guaranteed.

The invention discloses an elevator steel wire rope detection device and method, and the device comprises the following steps: firstly, carrying out the pre-scanning of an initial magnetic field, then carrying out the magnetization of a steel wire rope through a multi-stage adjustable electromagnet, and controlling the magnetization intensity through a current; the method comprises the following steps: firstly, pre-scanning a magnetic field, then, carrying out real-time monitoring and feedback control on the magnetized magnetic field, carrying out synchronous acquisition through a multi-modal sensor, then, extracting multi-domain features, receiving a feature vector set by a model, carrying out dynamic weighting operation on the feature vector set, and finally, outputting a task. The problem that initial magnetic fields of the steel wire ropes are inconsistent can be effectively solved, data are synchronously collected through the multi-mode sensor, effective distinguishing and quantitative evaluation of different types of defects such as wire breakage, abrasion, corrosion and fatigue damage are achieved, and the defects of an existing detection mode in defect subdivision and quantification are overcome.

The invention relates to the technical field of special-shaped steel pipe machining, in particular to a special-shaped steel pipe welding device which comprises a welding module fixedly installed on a bottom plate, the welding module comprises a fixing frame and a power box which are fixedly installed on the bottom plate, and a second electric push rod is installed at the top of the fixing frame and fixedly connected with the top of an upper cover through a hanging rod. A rotatable upper tooth part is installed in the upper cover, a lower cover matched with the upper cover is installed on the power box, a rotatable lower tooth part with the same structure as the upper tooth part is installed on the lower cover, electromagnets used for locking the corresponding upper tooth part and the lower tooth part are installed on the upper cover and the lower cover correspondingly, and a linear moving pair is installed on the upper tooth part through a connecting block. An extension plate is installed on a sliding block of the linear moving pair, a welding machine is installed at the end, away from the sliding block, of the extension plate through an electric rotary table, and a driving motor for driving the upper tooth part and the lower tooth part is installed in the power box. The device is high in automation degree and can adapt to special-shaped steel pipes with various sections.

The invention provides a hydraulic engineering detection sampling device, and relates to the technical field of sampling devices. The device comprises a floating assembly, a main sampling assembly, an extraction assembly, a shifting assembly, a crushing assembly and an auxiliary sampling assembly, wherein the floating assembly is used for measuring the sampling depth by floating on the water surface; the main sampling assembly is arranged under the floating assembly and is used for sampling water; the main sampling assembly comprises a main shell, a fixed seat is fixedly connected to the center of the upper part of the main shell, a guide cylinder is fixedly connected to the center of the interior of the main shell, a circular electromagnet is fixedly mounted on the top wall of the guide cylinder, an extraction spring is fixedly connected to the interior of the guide cylinder, and a sampling cylinder is arranged in the main shell; and the upper part of the sampling barrel is fixedly connected with a sampling head. By arranging the main sampling assembly, the main sampling assembly is provided with a plurality of sampling barrels, a plurality of samples can be taken at a time, and the sampling efficiency is higher.

According to the implantable magnetic suspension blood pump structure, an impeller is suspended in a containing cavity of a pump shell and can rotate around the central axis of the pump shell, and blood is sucked in from an inlet and discharged from an outlet; the motor comprises a motor stator assembly arranged in the pump shell and a rotor magnet array arranged on the impeller. The magnetic suspension device comprises an electromagnet arranged in the pump shell and a suspension magnet assembly arranged on the impeller, and electromagnetic suspension force provided by the electromagnet and passive permanent magnet bias suspension force provided by the suspension magnet assembly jointly maintain suspension balance of the impeller. The motor and the magnetic suspension device are independently controlled, so that the negative influence of low signal detection accuracy caused by magnetic field coupling is effectively reduced; the hybrid magnetic suspension structure reduces power consumption of the magnetic suspension device; the arrangement positions of the motor stator assembly and the electromagnet enable the blood pump to be compact in structure and reduce the size and weight; the gap and the position of the electromagnet and the suspension magnet assembly are accurately controlled, accurate control over the suspension position of the permanent magnet is achieved, and the pumping efficiency and stability of the blood pump are improved.

The invention provides a test device for simulating ejection impact load, which is characterized in that side columns of the test device are fixedly arranged, a movement guide rail is arranged on the inner wall of each side column along the vertical direction, a variable stiffness spring is arranged below each movement guide rail, and an electromagnet is arranged at a certain height between the two side columns. The load block is connected with the electromagnet under the magnetic force effect of the electromagnet, the two ends of the load block are slidably connected with the movement guide rails, the impact force sensor is arranged on the load block, the lower bottom face of the impact force sensor is flush with the lower end faces of the two ends of the support, and the model box is arranged below the load block and filled with soil. The surface of a soil body in the model box is flush with the upper end face of the variable-rigidity spring, each crank pulley mechanism is arranged on the corresponding side column and located above the variable-rigidity spring, and after the load block impacts the soil body for the first time and bounces, limiters in the crank pulley mechanisms move to the movement guide rails to prevent the load block from impacting the soil body again.

The invention discloses tea juice treatment equipment, and relates to the technical field of tea juice treatment. The device comprises a separation net provided with a through hole, a cutter head and a dial wheel plate crushing assembly which are coaxially arranged up and down, an adjustable magnetic coupling driving part composed of an electromagnet and a planetary gear, a bidirectional flow centrifugal separation chamber, a filter element fine filtration cavity and a non-stop screw deslagging mechanism. Flushing wastewater is actively pre-crushed and then tangentially guided to a centrifugal cavity, and solid and liquid are rapidly separated under the synergistic effect of centrifugal force and suction pressure difference; a liquid phase is subjected to center suction, refined filtration, clarification and discharge, and a solid phase settles along the inner wall and is automatically conveyed to the outside for sealed collection. According to the system, the rotating speed is adjusted in a closed-loop mode through online particle monitoring, load self-adaption and low-energy-consumption operation are achieved, filter screen blockage, shutdown cleaning and peculiar smell diffusion are avoided, and the system is suitable for on-site up-to-standard treatment of tea residue sewage in the peak period of a catering store.

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.

“THREE-DIMENSIONAL MONITORING SYSTEM FOR KINGPIN ON FIFTH WHEEL” describes an invention patent, for a monitoring system of Kingpin / Fifth Wheel articulation presented on trucks, with a great applicability for autonomous steering systems and vehicle dynamics control. This system allows the precise monitoring of translational, rotational movements and the relative accelerations of the king pin (5) in relation to the fifth wheel (3) on the X, Y and Z axes, totaling measurements in six degrees of freedom. The present patent presents two ways to make this monitoring of the three-dimensional position of the kingpin (5): The first through a set of sensors (6) accelerometers and gyroscope integrated to an electromagnet (4) that when electrified, is coupled to the king pin (5) by magnetic attraction. The second mode through a reference device (20) that is magnetic, identifiable, independent and easy to apply to the kingpin (4).

There is provided be a brushless direct current, BLDC, electric motor. The BLDC electric motor comprises a rotor comprising a rotor shaft and a stator arranged around the rotor shaft. The stator comprises a stator hub comprising electromagnets, and cooling channels extending in a direction that is parallel to a longitudinal direction of the rotor shaft and the cooling channels are positioned between the rotor shaft and the electromagnets.

To provide a control device for a magnetic bearing that enables mode separation of a natural vibration mode with high precision and can design a stable controller with the degree of the controller made small.SOLUTION: With respect to a model for a rotary body controlled by radial magnetic bearings 1, 2, a status space model is structured by excluding a controller which controls a plant from a mode composition model having parameters of a mass matrix, a rigidity matrix, and an attenuation matrix identified and adjusted by a parameter estimation part, and a mode separation part 61 on the input side of controllers 1, 2 inputs a measurement signal of a displacement sensor from the radial magnetic bearings 1, 2 to perform mode separation with a mode separation coefficient. A mode composition part 62 on the output side of the controllers 1, 2 performs mode composition with a mode composition coefficient, and outputs a drive command signal (current, voltage) to electric magnets of the radial magnetic bearings 1, 2.SELECTED DRAWING: Figure 14

The invention relates to a bridge tower component reinforcing steel bar intelligent hoisting control method, which belongs to the technical field of bridge construction, and comprises component reinforcing steel bar butt joint, and specifically comprises the following steps: S601, conical permanent magnet array modules are circumferentially embedded in the end surfaces of component reinforcing steel bars, and annular electromagnet array modules are correspondingly arranged on the end surfaces of embedded reinforcing steel bars; on the basis of the fusion parameter set in the step S2, obtaining the distance value between the embedded steel bar and the component steel bar, and then triggering an electromagnet to be powered on; s602, closed-loop feedback adjustment is conducted, the pose deviation and contact pressure of the component reinforcing steel bars and the embedded reinforcing steel bars are monitored in real time through a multi-mode sensing unit, and data are transmitted back to the edge computing nodes; and S603, electromagnetic parameter dynamic optimization is conducted, the current intensity of the annular electromagnet array is dynamically adjusted according to the pose deviation and the spacing value, and the magnetic attraction force is enhanced. Efficient and accurate butt joint of the component reinforcing steel bars and the embedded reinforcing steel bars is achieved through magnetic butt joint and dynamic current adjustment.

The magnetic suspension blood pump is high in integration level, small in magnetic field coupling degree and high in regulation and control precision and comprises a pump shell, an impeller, a motor unit and a magnetic suspension unit, and the axial suspension state of the impeller is jointly maintained through the magnetic acting force between an electromagnet assembly and a suspension magnet assembly and the magnetic acting force between a motor stator assembly and a motor rotor magnet; the repulsive force of the static magnetic ring array and the movable magnetic ring array maintains the radial suspension state of the impeller. The magnetic suspension unit and the motor unit are arranged at the upper end and the lower end of the impeller respectively, the distance between the magnetic suspension unit and the motor unit is increased in space, the magnetic coupling effect between the magnetic suspension unit and the motor unit is greatly reduced, control difficulty is remarkably reduced through independent control of the magnetic suspension unit and the motor unit, and system stability is improved. The special structural design improves the space utilization rate, reduces the size of the pump body, disperses a heat source and reduces the heat dissipation pressure; the bias magnetic field provided by the suspension magnet provides open-loop magnetic force in the axial direction, the closed-loop control force needing to be provided by the electromagnet assembly is greatly reduced, and the purposes of saving energy and reducing consumption are achieved.

The invention discloses a medical cleaning machine water inlet rapid butt joint device convenient to disinfect and maintain, and relates to the field of butt joint devices. According to the medical cleaning machine water inlet rapid butt joint device convenient to disinfect and maintain, the female head pipeline and the male head pipeline which can be separated are arranged, an electromagnet and a permanent magnet which are controlled by a controller are correspondingly arranged on the butt joint part base and the male head butt joint base, and detection feedback of a Hall sensor and a pressure sensor is combined; automation and intelligentization of the water inlet pipeline butt joint process are achieved, the device can automatically sense approaching of a male head and start magnetic force to guide adsorption, and preliminary alignment is completed; and according to the sealing pressing force fed back by the pressure sensor, the electromagnet is intelligently controlled to be switched to a strong magnetic force locking mode, so that on the premise that reliable connection sealing is ensured, rapid, accurate and force-controlled butt joint and separation are achieved, and the problems that a traditional mode is tedious in operation and poor in connection reliability are effectively solved.

The invention discloses a small generator, and relates to the technical field of generators. The motor comprises a shell, double-end heat dissipation ventilation holes, a permanent magnet shielding rotor and a temperature control torsion limiting protection assembly. The grooves in the periphery of the rotor and the built-in paddles construct through airflow during rotation, so that self-dispersing heat dissipation is realized; coil temperature rise triggers a triode through a thermistor to drive a protection electromagnet, torque transmission of a fluted disc friction coupling is adjusted, and continuous derating can be achieved until zero-coupling shutdown is achieved; the permanent magnet adjusting assembly rapidly cuts off magnetic field output through an iron shell-aluminum strip-permanent magnet combination and an electromagnetic locking mechanism, and it is guaranteed that no induced voltage exists in the overhaul period.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

The invention discloses a pilot valve for hydraulic adjustment, and relates to the technical field of pilot valves, the pilot valve comprises a main valve sleeve assembly, an electromagnet assembly and a coil assembly which are assembled in sequence, the electromagnet assembly comprises a shell and a driving shaft, the driving shaft is assembled in the shell in a sliding mode, and the main valve sleeve assembly comprises an end cover, a main valve sleeve, a main valve element, a front valve element, a main spring seat and a pilot valve element. The main valve sleeve is fixedly installed in the shell, the end cover is in interference fit with the end, away from the shell, of the main valve sleeve, the main valve element is slidably assembled in the main valve sleeve, the front valve element is slidably assembled in the main valve element, the main spring seat is slidably assembled in the front valve element, and one end of the main spring seat movably penetrates through the front valve element to be in threaded connection with the end cover. A main elastic piece is assembled between the main spring seat and the front valve element, the pilot valve element is assembled between the main valve element and the driving shaft in a sliding mode and located on the moving path of the driving shaft, and a pilot elastic piece is assembled between the pilot valve element and the main valve element. Assembly is easy, machining difficulty is reduced, mass production is facilitated, and cost is reduced.

The invention discloses an energy-storage heat-conducting structural adhesive testing device and method, and belongs to the technical field of material thermal performance test.The energy-storage heat-conducting structural adhesive testing device comprises a bearing plate arranged on a pipeline stand column and a plurality of testing sets located on the bearing plate, and each testing set comprises a master control box, a pressure sensing assembly, a heating assembly and a guiding assembly; the pressure sensing assembly can perform intelligent pressure control on a to-be-tested sample, heat-conducting property deviation under different pressures is eliminated, the heating assembly adopts a graphene heating film to realize an automatic frequency modulation function, so that the heating temperature is uniform and constant, and the guiding assembly comprises a pressing plate, a guiding column, an electromagnet and a strong magnet which are located above the heating assembly. According to the invention, axial and planar heat conduction performance tests can be carried out on the to-be-tested sample, simultaneous multi-station tests are also realized, the accuracy of comparison tests under the same working condition is ensured, and the test precision and the working stability of the heat conduction performance of the to-be-tested sample are improved.

The invention relates to the field of grinding, and provides an aluminum alloy die casting grinding method and equipment which comprises a base, two first mounting frames are fixedly connected to the top wall of the base, a second mounting frame is fixedly connected to the two first mounting frames, and a first electric push rod is fixedly connected to the second mounting frame; an electromagnet and two transmission pieces are fixedly connected to a movable part of the first electric push rod, a driving roller set is connected to the first electric push rod, two tooth grooves are formed in the inner wall of the first electric push rod, limiting tooth sets are fixedly connected to the inner walls of the tooth grooves, two supporting assemblies are connected to the base, and each supporting assembly comprises a supporting roller set, a linkage rod and an L-shaped plate; one end of the linkage rod is rotationally connected with the supporting roller set, the other end of the linkage rod is rotationally connected with the L-shaped plate, an internal grinding roller assembly is connected to the base, and an external grinding assembly is connected to one of the first mounting frames. According to the embodiment, only one first electric push rod is arranged for driving, and the effects of adjusting the distance between the two supporting roller sets and pressing a workpiece through the driving roller set can be achieved.

The clamp tool comprises a base assembly and a power supply assembly, magnetic attraction assemblies are arranged on the left side and the right side of the upper end of the base assembly, each magnetic attraction assembly comprises a first connecting electrode, a first wire and an electromagnet, the first wire is connected to the upper end of the first connecting electrode, and the electromagnet is connected to the lower end of the first connecting electrode. The power supply assembly is located below the base assembly, telescopic assemblies are connected to the upper ends of the left side and the right side of the base assembly, and clamping assemblies are connected to the sides, close to the central axis of the base assembly, of the telescopic assemblies. Compared with an existing common clamp tool, the clamp tool facilitating clamping is provided with a magnetic attraction structure, magnetic attraction locking can be conducted after clamping of the clamp tool is completed, and therefore the situation that clamping of the clamp tool is loosened due to the fact that the clamp tool is affected by a power structure in the clamping process is avoided, rapid clamping can be achieved by placing materials on the clamp tool, and the clamping efficiency is improved. And therefore, the equipment has a convenient clamping function.

The invention discloses a household wall-mounted energy storage power supply, and belongs to the technical field of energy storage equipment, the household wall-mounted energy storage power supply comprises a hanging plate, a power supply body and an equipment box, the top of one side of the power supply body is fixedly provided with a hook, the hook is inserted into the hanging plate, the bottom of the power supply body is provided with a locking mechanism, and the locking mechanism is connected with the hanging plate. An electromagnet, a linkage mechanism, a connection mechanism, a slide rheostat, a monitoring mechanism, a buffer mechanism, a controller and a stop button are arranged in the equipment box, the electromagnet is connected with the power source body in series, the linkage mechanism comprises a sealing box, a piston plate, a sealing cylinder and an iron sheet, the iron sheet is embedded in the piston plate, and the piston plate is connected with the sealing cylinder. And a sealing disc is mounted in the sealing cylinder in a sliding manner. The transverse rod is linked with the slide rheostat to automatically adjust the resistance of the cooling fan, the resistance is reduced when the current is increased to improve the power of the fan, the dynamic matching of the cooling intensity is realized, and in addition, the system is additionally provided with multiple safety protection mechanisms.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an electrically-controlled reducing cutter, which has the technical scheme that the extension and retraction of the cutter are accurately controlled by a control base driving motor and an electromagnet, wherein the control base driving motor comprises an MCU (Microprogrammed Control Unit) and a wireless communication module; the control base can receive a ground instruction and transmit an underground working state signal back in real time; meanwhile, the ratchet mechanism is matched with the electromagnet to achieve extending and retracting of the cutter position, and the pawl is always in close contact with the ratchet wheel under the action of the spring. And the lower shell is in threaded connection with the guide shoe. The cutting knife is driven to rotate through the transmission shaft, the cutting knife is controlled to stretch out and retract through the intelligent electric control system, continuous cutting of casing pipes with different pipe diameters can be achieved, the tripping frequency is reduced, and the casing pipe cutting efficiency in the well abandoning operation process is greatly improved.

The utility model belongs to the technical field of automobile testing, and provides a quick tripping device applied to a safe evacuation system, which comprises a shell, an electromagnet, a shifting block, a push-pull rod, a first spring, a locking piece and a pull ring, the shifting block is rotationally connected to the shell; the push-pull rod is arranged in a sliding mode in the first direction and is provided with a farthest stroke point and a nearest stroke point relative to the pull ring. The first spring is arranged in the first direction and can make contact with the locking piece. The locking piece is located in the shell and connected with the push-pull rod, and the locking piece has a clamping form and a releasing form along with movement of the push-pull rod; electric tripping is achieved by means of the electromagnet, locking and tripping states of the pull ring are achieved through a mechanical structure, linkage of all parts is convenient and rapid, corresponding alarm triggering signals are achieved, and the structural safety is good.