11 results about "Electromagnetic devices" patented technology

The application discloses a low-voltage split excitation tripping device, which solves the problem of failing to realize tripping at low voltage. The electromagnetic device comprises an electromagnet mechanism and a swing support, the electromagnet mechanism is electrically connected with an input end; the swing support comprises an attraction end, a pressing end and a fulcrum, the fulcrum of the swing support is closer to the pressing end, the swing support is rotatably connected to a shell body around the fulcrum of the middle frame body, the attraction end is in attraction cooperation with the electromagnet mechanism, and the pressing end is in pressing cooperation with a tripping support. The electromagnet mechanism attracts the swing support through electromagnetic force, the attraction end of the swing support is close to or contacts the electromagnet mechanism, the pressing end presses on the tripping support to make the tripping support displace, and the tripping device is tripped; since the fulcrum of the swing support is closer to the pressing end, the electromagnetic attraction force required by the electromagnet mechanism can be smaller to cause the attraction reaction, low-voltage tripping can be realized below 70% of a rated control power voltage, and the safety protection performance of the product is greatly improved.

The application discloses a broken bridge system intelligent door, the door frame and the door leaf of which are of a broken bridge heat insulation structure, and in addition, the door leaf and the door frame are provided with an electromagnetic device and an intelligent door lock, the intelligent door lock and the electromagnetic device are linked and controlled through two interconnected controllers, and in addition, the door frame is provided with a trigger structure which is triggered by pressure to open the electromagnetic device. The application improves the tightness after the door is closed through the broken bridge heat insulation structure and the magnetic attraction device, and the intelligent door lock linked and controlled with the magnetic attraction device is arranged to realize mutual cooperation in the whole door closing process, so that the heat insulation, sound insulation and tightness of the door are improved, and the above performances are mutually strengthened. Specifically, the magnetic attraction device realizes self-attraction while firmly closing the door leaf, the locking tongue does not rub against the lock hole while being closed, the locking tongue is protected, the intelligent door lock can receive the pressure value feedback of the electromagnetic device to determine whether the locking tongue needs to be pushed out.

The electromagnetic device comprises a magnet core with a longitudinal axis having a first region and a second region, a coil former arranged around the second region of the magnet core, the coil former having at least one receiving region for receiving at least one coil winding of a coil, and a housing made of magnetic material, the housing circumferentially surrounding the magnet core and the coil former, the housing having at least one contact region surrounding and contacting the magnet core. The first region of the magnet core has at least one convex portion on a surface of the magnet core facing the contact region of the housing, the convex portion being formed such that the magnet core does not contact the housing in a section along the longitudinal axis between the convex portion and the second region of the housing.

Underground pipeline mapping and inspection utilizes phase shifts and voltages of electromagnetic signals transmitted to and received from the underground pipeline to determine any displacement of the underground pipeline.

An electromagnetic, EM, device, includes: a three-dimensional, 3D, body having a dielectric material, the 3D body having a first dielectric portion, 1DP, and a second dielectric portion, 2DP, wherein

This utility model discloses a multifunctional electromagnetic shielding room, relating to the technical field of electromagnetic shielding rooms. It includes an outer frame with multiple layers of outer shell panels fixedly connected to its outer surface. An entrance door is located on the front outer shell panel of the outer frame. A delivery pipe is mounted on the top of the outer frame, and a gas extinguishing system control box is connected to the end of the delivery pipe. Multiple vertical pipes penetrate the bottom of the delivery pipe, and sprinkler nozzles are installed at the bottom ends of the vertical pipes. A cavity is formed inside the outer frame, and multiple heat-sensing fire detectors are installed on the top of the inner side of the cavity. Multiple first partitions are provided on one side of the inner wall of the cavity. This utility model, through its series of structural features, can effectively suppress initial fires, reduce the probability of equipment damage and experimental data loss within the shielding room, and remove the restriction on independent experiments of electromagnetic equipment within the shielding room, thereby enhancing the application value of the electromagnetic shielding room.

Systems and methods for controlling electromagnetic devices are disclosed. The system can include one or more processors configured to communicate with one or more radio managers to provide commands and receive information from one or more devices associated with each respective radio manager. The one or more processors can condition the responses and requests from and to the radio managers to be compatible with an application operating on a user device.

The utility model discloses a miniature self-locking electromagnet, which belongs to the technical field of electromagnetic equipment and comprises a shell, a telescopic permanent magnet is fixedly mounted on the inner bottom wall of the shell, a reset mechanism is arranged in the shell, a self-locking mechanism is arranged in the shell, and the reset mechanism and the self-locking mechanism are fixedly mounted on the inner bottom wall of the shell. And a magnetic attraction mechanism is arranged in the reset mechanism, an adjusting mechanism is arranged in the reset mechanism, and an iron core rod with one end penetrating through and extending out of the shell is fixedly installed at the bottom end of the reset mechanism. According to the utility model, the reset mechanism and the self-locking mechanism are arranged, so that the extension and retraction states of the telescopic column can be self-locked, and the electromagnet is allowed to be maintained at the last operation position even in a power-off state and cannot automatically reset, so that the problem of misoperation of an external mechanism caused by accidental power-off is avoided; and the operation stability and reliability of the electromagnet are obviously enhanced.

This utility model relates to the field of solenoid valve technology and discloses an air spring stiffness control solenoid valve, including a main tube and two connecting tubes, which are respectively fixedly installed on both sides of the main tube. It also includes a fixing plate, which is located on the top of the main tube. An electromagnetic device is fixedly installed on the top of the fixing plate, containing two electromagnetic coils. A power socket is fixedly installed on one side of the electromagnetic device. An air spring is located on the main tube directly below the fixing plate, and a piston is fixedly installed at the bottom of the air spring. A filter screen ensures that dust and particulate impurities entering the main tube are filtered and intercepted, preventing them from entering the air spring or affecting the movement of the piston. Simultaneously, a rotating scraper scrapes the impurities on the filter screen, causing them to fall into a collection box in the collection chamber below. This achieves self-cleaning without manual intervention, extending the service life of the solenoid valve and reducing maintenance costs.