46 results about "Electromagnet" patented technology

The invention discloses a comprehensive control method for rockburst in a multiple-coalbed mining mine. According to the method, rockburst is controlled by employing two-side blasting for pressure relief, pressure-relief chamber establishment and coalbed high-pressure water injection according to monitoring data. The source of the monitoring data comprises electromagnet radiation monitoring, drilling-cutting-method pulverized coal monitoring, mine pressure monitoring and micro-seismic monitoring system monitoring. Two-side blasting for pressure relief means that during tunneling of upper gangway and lower gangway of a working face, following closely the tunneled working face, deep-hole pressure-relief blasting is arranged to the lower side of the upper gangway and the upper side and the slower side of the lower gangway. Pressure-relief chamber establishment means that the pressure-relief chambers are disposed on the lower side of the upper gangway and the upper side and the lower side of the lower gangway every 40 meters during tunneling. The coalbed high-pressure water injection means that advance water injection accompanied by coalbed high-pressure water injection is carried out on the upper sides and the lower sides of the gangways and in the pressure-relief chambers for rockburst control. According to the method of the invention, multiple methods are used for comprehensive forecasting, so that the rockburst control level is improved, the loss caused by rockburst is effectively reduces, and thus the pertinence and the effectiveness of the rockburst control are substantially enhanced.

The invention relates to a device for detecting the life of press keys, comprising a body (1), the bottom of which is provided with a base board (2) extending forwards and used for placing a tested piece (12). The device is characterized in that the body (1) is connected with at least one cylinder (4) which can push against or loosen the press keys on the tested piece (12), the cylinder (4) is connected with an external gas source by an airway tube (10), and the airway tube (10) is connected with a valve used for controlling the cylinder (4). Compared with the prior art, the device has the following advantages: the structure of the device for detecting the life of the press keys is simplified to a maximal degree by applying the pneumatic principle and effective finger-simulated key pressing action by the cylinder, thus providing guarantee for realizing high reliability, high precision and long life of the detecting device, preventing the workpiece from being interfered by electromagnet in the process of detection and solving the life detecting problem of mini press keys of dense layout effectively, and simultaneously, the press force of the cylinder can be movably adjusted according to the bearing pressure of the press keys of the tested piece.

A fuel injector comprising a hollow body for housing a metering valve with a calibrated pipe for outlet of the fuel from a control chamber. The calibrated pipe is normally kept closed by a shutter controlled by an electromagnet comprising a magnetic core and an electric coil housed in an annular slot of the core. The coil outer cylindrical surface forms a gap with the annular slot so as to be lapped by the fuel coming out of the calibrated pipe. The coil comprises a bobbin having a pair of appendages for supporting electric supply plugs, which are englobed at least in part in a block of non-magnetic material. The bobbin has a substantially cylindrical rib, one flange adjacent to an end portion of the plugs, and another flange having a smaller diameter that forms a passage for the fuel between the calibrated pipe and the gap.

The invention relates to a binary synchronization electromagnetic block brake of a gantry. The structure of the binary synchronization electromagnetic block brake comprises a gantry bracket, brake arms, brake shoes, a double-push electromagnet, a clearance adjusting mechanism, a draw bar and a brake spring, wherein the gantry bracket is formed by fixedly connected rectangular frames; the brake arms are arranged on two sides of the gantry bracket; the lower end of each brake arm is hinged on the gantry bracket; the brake shoes are connected with the brake arms; the double-push electromagnet is fixed on the gantry bracket; the clearance adjusting mechanism is arranged between the double-push electromagnet and the brake arms for adjusting the clearance between each brake shoe and a brake wheel; the draw bar is connected with the brake arms; the brake spring is sleeved on the draw bar; and the draw bar pulls the brake arms towards the inside by tension force of the brake spring. By virtue of the binary synchronization electromagnetic block brake, the hidden troubles of an elevator traction machine and a crane can be eliminated; the clearance is conveniently adjusted; and the working reliability and universal interchangeability are improved greatly.

The invention discloses a method for hoisting and transporting steel plates by adopting an electromagnet in steel plants. An electromagnet for hoisting and transporting the steel plates is provided with an electromagnet buffer device; the device is vertically provided with a buffer body; the lower end of the buffer body is provided with a buffer element capable of sliding vertically; the upper end of the buffer element is provided with a spring for buffering; the buffer body is detachably provided with a buffer head; the buffer head is prepared from three different kinds of materials and are selected for use according to different hoisting and transporting fields; in use, the electromagnet is hoisted up to stably fall on steel plates required to be hoisted and transported, is supported by the buffer device so as to enable a gap of 2-3cm to be formed between the bottom surface of the electromagnet and the steel plates, then is started up again when being stable, and generates suction force so as to enable the bottom surface of the electromagnet to be in contact with the surfaces of the steel plates to achieve connection, so that the electromagnet can hoist and transport normally. The method for hoisting and transporting the steel plates by adopting the electromagnet in steel plants provided by a invention can effectively prevent scratching or collision damage to the surface quality of finished product steel plates by the electromagnet in hoisting and transporting the finished product steel plates at different temperatures, can lower auxiliary material consumption of running vehicle magnetic force hoisting and transporting and labor intensity of field workers, and can improve the working efficiency.

The invention provides a wearable type assisted traveling device with adjustable step speed and self-adaptive step pitch. The wearable type assisted traveling device comprises a mechanical assembly and a control assembly, wherein the mechanical assembly comprises a waistband, and the two sides of the waistband are symmetrically equipped with racks; thigh support plates are mounted below the racksin a matched mode; the lower ends of the thigh support plates are equipped with thigh fixing belts in the matched mode, and the lower ends of the thigh support plates are equipped with spring coils; the control assembly comprises a power supply module, a motor driver, a control module, a step speed regulating knob, a power supply switch, a sensor A, a sensor B and film pressure sensors which are connected through cables, and is equipped with an electromagnet A and an electromagnet B, the sensor A and the sensor B are mounted on a protective cover in the matched mode, and the film pressure sensors are arranged at the lower ends of the spring coils. Compared with the prior art, the wearable type assisted travelling device has the beneficial effects of solving the long-time travelling obstacle problem of the old, and has the advantages of being adjustable in step speed, enabling step pitch to automatically adapt to to walking habits of people under different conditions, being safe and reliable, being simple in structure, being low in cost, and the like.

The invention relates to a control system, in particular to a building water overflow automatic alarm control system, which aims to solve the problem that a scattered control manner adopted for preventing water overflow of buildings is not suitable for the existing buildings, and centralized control is needed. When tap water or water in a heater accidentally overflows, and overflow sensors are submerged, detection signals are provided for a building water overflow automatic alarm controller by the overflow sensors, the building water overflow automatic alarm controller carries out detection judgment on the signals of the overflow sensors, when the signals meet the action condition of the building overflow automatic alarm controller, a relay control circuit is controlled to act, an alarm circuit is enabled to send out an alarm signal, and an electromagnet valve or an electrically operated valve is driven to act to close an overflow water source. The building water overflow automatic alarm controller comprises one or more hysteresis voltage comparison circuits, and the hysteresis voltage comparison circuits take LM339 voltage comparator integrated circuits as core elements for forming comparison circuits with a hysteresis starting function and a hysteresis closing function. The building water overflow automatic alarm control system is used for monitoring water overflow in the buildings.

The invention discloses an electromagnetic crawler automatic adsorption robot, which comprises a first body fixing frame, a second body fixing frame, a first caterpillar hydraulic cylinder and a second caterpillar hydraulic cylinder rotatably mounted on the first body fixing frame; At that same time,install the robot is installed on the crawler frame; A brush guide rail is fixed on the brush guiderail support, and a brush is arranged on the brush guide rail; A loop of electromagnet is fixedly arrange on that caterpillar, an electromagnet brush is arranged on the electromagnet, and the electromagnet brush can slide on the brush of the brush guide rail; The invention utilizes the electric brush and the electromagnet brush on the electromagnet to ensure that the crawler belt is adsorbed on the plane and at the same time does not affect the free walking of the robot. The angle of the first body mount and the second body mount is varied by rotating the hydraulic cylinder with the mount toaccommodate the planes of different angles.

The invention discloses an electronic fuel injection (EFI) rapid electromagnet which can eliminate stiction of an armature in release so as to speed up release. The invention is realized by the following technical scheme that an insulation magnet ring (5) is arranged at the position at which the distance between the end surface of the step below an iron core (1) and the end surface of a waist gap delta 1 of an internal shell (7) is L, so that the generated total flux is divided into two paths, wherein one path passes through an iron core (1), a middle shell (12), an external shell (6), a gap delta 2 between the inside diameter of the internal shell (7) and the outside diameter of the armature (4), the armature (4) and a gap delta1 between the upper plane of the armature (4) and the lower end surface of the iron core (1), so as to form a first loop flux phi 2; and an internal shell (7) and the external diameter of the armature (4); and the other path passes through the iron core (1), the middle shell (12), the external shell (6), and the internal shell (7), passes by the armature (4), and directly returns to the iron core (1) by passing through the internal cylindrical surface of the internal shell (7) and the external cylindrical surface of the iron core (1), so as to form a second loop flux phi 1.

The invention provides a rotary machinery dynamic balance weight online testing device. The device comprises a shell, wherein a rotor is installed in the shell and can rotate relative to the shell, a surface of the shell is connected with a vibration monitoring unit, at least three electromagnets are evenly fixed to the shell in the circumferential direction of the rotor, the electromagnets are electrically connected with a current controller, marking points are arranged on a surface of the rotor, an identification unit facing the marking points is further fixed to the outer side of the rotor, and the identification unit is in communication connection with a rotating speed monitoring unit. The invention further provides a dynamic balance weight online testing method. The mechanical dynamic balance weight testing device is advantaged in that by controlling the magnitude of current on the electromagnets, attraction force with different intensities and directions is provided for the rotor, so the balance weight effect is simulated, a purpose of applying balance weight to the rotor in the rotating process is achieved, online testing of mechanical dynamic balance weight is achieved, adjustment is convenient, the counterweight position and size can be determined through one-time testing, and efficiency is improved.

A disclosed separation apparatus for iron-filing waste slag comprises a motor base, a conveying belt and a motor driving the conveying belt to operate, and is characterized in that a position, at the initial position of the conveying belt, of the motor base is provided with a feeding bin, a discharging port at the bottom of the feeding bin is provided with a sensor; the rear of feeding bin is provided with a plurality of electromagnet rods installed on the motor base through a support, a material distribution bin is arranged at a position corresponding to the end of the conveying belt and below the motor base and is installed on support legs of the motor base through a rail, and the material distribution bin is connected with a servo motor through a gear and a rack. The separation apparatus overcomes the disadvantages of the prior art, and is reasonable in designed structure. According to the separation apparatus, the electromagnet is arranged on the conveying belt for adsorbing iron filings in iron-filing waste slag, after the sensor senses that conveying of the iron-filing waste slag in the feeding bin is finished, the electromagnet is power-off and iron filings fall on the conveying belt and are conveyed out, so that the purpose of separating iron filings from waste slag is realized. The separation apparatus helps to save labor, and is high in efficiency, high in separation rate for iron filings from iron-filing waste slag and wide in application scope.

The application of the invention belongs to the technical field of processing equipment for punching automation and in particular discloses pipe punching equipment. The pipe punching equipment comprises a punching head, an electromagnet, a support column and a fixing device, wherein the electromagnet is located below the punching head, and the fixing device is located between the punching head and the electromagnet; a through hole is formed in the axial direction of the punching head, and a propping block used for propping punching hole scraps on a pipe is arranged on the inner side wall of the through hole; the fixing device comprises a positioning block, a magnetic powder bag for accommodating magnetic powder, a telescopic rod and a support unit which is matched with the inner diameter of the pipe, the positioning block is fixed on the support column, and the telescopic rod is connected between the positioning block and the support unit; an arc-shaped groove is formed in the support unit, an arc-shaped friction plate which is matched with the arc-shaped groove is arranged on the arc-shaped groove, and a cutter head used for crushing the punching hole scraps is arranged at the bottom of the arc-shaped groove. By adopting the pipe punching equipment to punch the pipe, the deformation of the pipe can be effectively avoided while punching, and burrs are molten generated when the pipe is punched, so that orifices are smoother.

The invention discloses a close coupled pump electromagnet with an electromagnetic shielding function. An electric coupler (4) is composed of a thread sleeve (5), a contraction sleeve (6), a rubber sleeve (7) and a tightening screw (8) sequentially; a cover (1), a conducting rubber ring (2), an electromagnet body (3), a wiring block (11) and an iron cover (13) are sequentially connected; the thread sleeve (5) of the electric coupler (4) is communicated with a round hole on the end face of one side of the electromagnet body (3) to form a T-shaped structure; the connection body of the iron core (13) and the wiring block (11) is arranged in the electromagnet body (3) in epoxy resin potting compound mode; a releasing-preventing spiral groove (27) is arranged on the inner cylindrical wall surface of the electromagnet body (3); and two flow guiding grooves (34) are arranged on the gap portion of a silicon steel sheet block (14). The close coupled pump electromagnet is of a full metal structure, has the electromagnetic protection function, and is good in electromagnetic compatibility, simple in structure, easy to form, high in reliability and convenient to maintain.

The invention provides an all direction open type sound box. The sound box comprises a base. A spherical shell comprising a vibrating diaphragm is fixed on the base. A left side surface and a right side surface of the spherical shell are symmetrically concave toward the direction of the center of the sphere, so as to form two sections of symmetrical horn pipes. The two sections of symmetrical horn pipes are mutually connected with each other in the spherical shell, so as to form a symmetrical horn pipe. A closing coil coaxial with the horn pipe is fixed on the surface of each section of horn pipe. The closing coil is distributed from the end of the horn pipe close to the center of the spherical shell to the end of the horn pipe close to the spherical surface of the spherical shell. A section of cylindrical electromagnet coaxial with the symmetrical horn pipe is fixed at the center of the interior of the symmetrical horn pipe. An exciting coil is wound on the surface of the electromagnet. The exciting coil is coupled on a power amplifier module and a power module arranged in the base. The all direction open type sound box has basically consistent auditory effect in all directions, and has high sound energy efficiency and large sound production power.

The invention provides an electromagnetic engine. The electromagnetic engine comprises a first shell and a second shell which is arranged on the first shell and communicated with the first shell, wherein a curved wheel assembly is horizontally arranged in the first shell; one end of the curved wheel assembly is connected with a small curved shaft connecting rod which penetrates through a side wall of the first shell, and the other end of the curved wheel assembly is connected with a first curved shaft connecting rod which extends out of another side wall symmetric to the side wall of the first shell; the part, extending out of the first shell, of the first curved shaft connecting rod is sleeved with a gear; the gear is meshed with a starting motor; the small curved shaft connecting rod which penetrates through the side wall of the first shell is connected with an electrode converter; connecting rods are arranged on the curved wheel assembly; the end portion of each connecting rod is connected with a movable permanent magnet; electromagnets corresponding to the movable permanent magnets in position are arranged on the upper end face of the second shell in a penetrating manner. The electromagnetic engine is simple in structure, solves the problem in the prior art that an electromagnetic coil is easy to polarize, and can provide a high-efficient durable power source for the electromagnetic engine.

An electromagnetic switch for a starter includes a coil that includes a first lead wire connected to a power supply side and a second lead wire connected to a ground side, the coil being supplied with an energization current through the first and second lead wires to form an electromagnet while a starter relay is on. The electromagnetic switch further includes a surge suppression device that absorbs part of energy emitted from the coil when the starter relay is turned from on to off so that a remaining part of the energy is applied to the starter relay to cause an arc current to flow between contacts of the starter relay.

An electromagnet assembly for supplying a region of concentrated electromagnetic flux is provided. The assembly includes a flat strip of an electrically conductive metal. The strip has a first and a second opposite planar surfaces at least one of which is covered by a dielectric material. The strip has first and second end portions. The strip is wound in a coil including at least one first loop and one second loop and disposing the second opposite planar surface in the first loop substantially adjacent the first opposite planar surface in the second loop. The coil is disposed about an axis of symmetry configured to concentrate electromagnetic flux at a midpoint on the axis of symmetry. First and second electrical terminals are connected at the first and second end portions, respectively.

The invention discloses an electromagnetic relay comprising a base, an electromagnet coil, an iron core, a movable iron piece, a linkage member, a static terminal and a moving terminal. The iron core is mounted on the base. The electromagnet coil is wound outside the iron core. The movable iron piece is movably mounted on the base. The upper end of the movable iron piece is connected with the linkage member. The other end of the linkage member is connected with the upper end of the moving terminal. The lower ends of the moving terminal and the static terminal are fixedly mounted on the base. The two edges of the lower end of the movable iron piece are each provided with an opening. A pressing part is formed between each opening and the end face of the lower end of the movable iron piece. A holding part extends from each of the two sides of the lower end of the iron core. The holding parts are accommodated in the openings and are pressed against the pressing parts respectively. The holding parts and the pressing parts are in contact to form an axis, and the movable iron piece swings around the axis. The electromagnetic relay of the invention has the advantages of compact structure and convenient assembly.

The invention discloses an electric self-locking type contactor which comprises a shell, a manual handle, two self-locking rods, two self-locking springs, a sliding connecting plate, eight wiring terminals, a sliding electromagnet, and a fixed electromagnet. The shell comprises a front shell and a back shell. The fixed electromagnet is installed at the lower part in the shell. The manual handle is installed at the upper part in the shell in a vertical sliding way. One end of each of the two self-locking rods is hinged to a side of the upper part in the shell, and the other end of each of the two self-locking rods is hinged to the lower part of the manual handle. The two self-locking springs sleeve the two self-locking rods. The sliding connecting plate is installed at the upper part in the shell, and the central position of the upper part of the sliding connecting plate is installed at the lower end of the manual handle. The sliding electromagnet is installed under the sliding connecting plate. Each of the wiring terminals is provided with a fixed contact. According to the invention, through arranging the self-locking springs, the purpose of contactor mechanical self locking is realized, the structure is unique, and the electric self-locking type contactor is convenient to use.

The invention relates to the technical field of network technology, and discloses a network technology peep-proof automatic power-off lifting camera. The camera comprises a shell; a driving wheel is rotationally connected to the interior of the shel; a chain is meshed with the exterior of the driving wheel; a rotating ring is fixedly connected to the exterior of the driving wheel, and a linkage rod is movably connected to the exterior of the rotating ring. A lifting table is fixedly connected to the exterior of the linkage rod, a camera is fixedly connected to the top of the lifting table, a movable rod is fixedly connected to the bottom of the lifting table, a bent rod is slidably connected to the interior of the shell, and a trigger block is slidably connected to the interior of the shell; Through mutual cooperative use of the shell, the driving wheel, the chain, the rotating ring, the linkage rod, the lifting table, the camera, a movable rod, a bent rod, a trigger block, a magnetic plate assembly, an electromagnet I, a sealing shell, magnetorheological fluid and a torsional spring, when the camera is used, the effect of an automatic lifting function can be achieved through automatic operation of the mechanisms.

The present invention relates to an oblique projectile motion and free-fall motion contrast teaching instrument. The instrument comprises a first board, a wire, an electromagnet, a battery pack, a switch, a small ball, a stainless steel pipe, a bare conductor and a transparent adhesive tape. The first board is horizontally arranged and is vertically connected with a second board, a third board and a fourth board through nails; the stainless steel pipe is arranged on the second board, the third board and the fourth board; the small ball is arranged at the entrance in the stainless steel pipe; the electromagnet, the battery pack, the switch and the stainless steel pipe are connected through the wire in order; the bare conductor is pasted at two sides of the stainless steel pipe through the transparent adhesive tape; and a coin is absorbed at the bottom portion of the electromagnet, and the tangent line of the stainless steel pipe passes through the center of the coin. According to the oblique projectile motion and free-fall motion contrast teaching instrument, all the devices are stored in a toolset through pulling put nails when the oblique projectile motion and free-fall motion contrast teaching instrument is not used, and the oblique projectile motion and free-fall motion contrast teaching instrument is ingenious in design, low in manufacturing cost and convenient to carry, etc.

The invention discloses a rotating shaft braking device. The rotating shaft braking device comprises a braking cylinder, a rotating shaft and a centrifugal mechanism; the rotating shaft is inserted into the braking cylinder, penetrates through the two ends of the braking cylinder and is arranged on the braking cylinder in a rotating mode; the centrifugal mechanism is arranged in the braking cylinder in a rotating mode, sleeves the rotating shaft and comprises a sliding block I, a sliding block II and a plurality of friction blocks; the sliding block I and the sliding block II sleeve the rotating shaft and move in the axial direction of the rotating shaft; two connecting rods are hinged to the bottom of each friction block and are hinged to the sliding block I and the sliding block II; an electromagnet I and an electromagnet II are arranged on the two opposite end surfaces of the sliding block I and the sliding block II; the electromagnet I is connected to a controller through a magnetic field intensity adjusting module I and a magnetic field direction adjusting module I; the electromagnet II is connected to the controller through a magnetic field intensity adjusting module II and amagnetic field direction adjusting module II; and a rotating shaft rotating speed detection sensor is further connected to the controller. According to the rotating shaft braking device, the rotatingshaft can be automatically braked under the condition of relatively high rotating speed.

The invention discloses a sorting device for parts of hardware and electrical appliances, which comprises a sorting device main body, and is characterized in that the middle part of an inner cavity ofthe sorting device main body is equipped with a horizontal conveyor belt, electromagnets are installed at equal intervals on the conveyor belt, a feeding hopper is installed above one side of the sorting device main body, a conveying pipeline of the feeding hopper extends to the position right above one end of the conveyor belt, the side wall of the inner cavity of the sorting device main body issymmetrically equipped with air injection pipelines along the length direction at two sides of the conveyor belt, and a top plate located right above the sorting device main body is provided with a dust absorbing port. In the invention, a water spraying pipeline sprays water to a metal material after the metal material is separated from a non-metal material, and the metal material is stirred by astirring paddle in a processing box at the same time, thereby enabling the material to clean the dirt thereon by means of mutual collision and friction, improving the purity of the metal material inthe subsequent process, and improving the quality of manufactured products.

The invention belongs to the technical field of machining and particularly relates to a blind hole machining technology. The blind hole machining technology comprises the following steps that 1, preparation is conducted, specifically, a drilling tool and a rack with an electromagnet are prepared, and a chip attracting pipe capable of automatically attracting wood chips through the electromagnet isslidably connected into the drilling tool; 2, drilling is conducted, specifically, a workpiece is fixed to the electromagnet, the drilling tool and the chip attracting pipe continuously downwards move to form a blind hole while the drilling tool and the chip attracting pipe rotate, the rotating speed of the drilling tool is 1150-1300 r/min, and the falling speed of the drilling tool is 15-20 mm/min; 3, chip attracting is conducted, specifically, the electromagnet is started, the chip attracting pipe is fixed, meanwhile, in the upward moving process of the drilling tool, the wood chips in theblind hole are automatically attracted through the chip attracting pipe, and the working current of the electromagnet is 1000-1300 A; 4, discharging is conducted, specifically, the electromagnet is stopped, the chip attracting pipe automatically upwards moves, and after the chip attracting pipe moves out of the blind hole, the workpiece is taken down; and 5, chip discharging is conducted, specifically, in the process of continuous upward moving of the chip attracting pipe, the wood chips in the chip attracting pipe are automatically discharged. According to the scheme, the wood chips in the blind hole can be conveniently cleared away.

The invention relates to an electromagnetic adsorption sealing feeding device and method, and belongs to the technical field of environmental protection. According to the technical scheme, a moving soft connection (6) is arranged between a moving soft connection upper flange (4) and a moving soft connection lower flange (8), a thrust spring (7) is arranged between the moving soft connection (6) and an adsorption fit electromagnet (5), and a pneumatic inserting plate valve (13) can open and close a feeding channel at the top of a silo (15); and the gate position proximity switch (11) is arranged on the moving route of the pneumatic inserting plate valve (13) and located in the feeding channel at the top of the silo (15), a lower flange (8) of the moving soft connection at the discharging groove part is matched with a flange connection short section (9), and pressing fit and sealing are conducted. The electromagnetic adsorption sealing feeding device can realize full-closed discharging,and achieve the effect of zero spillover of dust, the convenience and fastness are achieved, the time and effort are saved during maintenance and repair, the accurate detection result is ensured, theoperation is facilitated, and the applicability is high.