30results about How to "Realize the isolation function" patented technology

The invention provides an emergency player based on an IOT communication mechanism. The emergency player comprises a fixing frame, a clamping groove, a fixing plate, a pressing plate, a fixing column,a through groove, a base, a mounting support, a lead screw, a ball nut holder, a connecting ring and a suspending plate. The clamping groove is formed in the upper side surface of the interior of thefixing frame. The through groove is formed in the lower end surface of the fixing frame. The fixing column is fixed to the position, on the left side of a cover plate, of the lower end surface of thefixing frame. The pressing plate is assembled on the annular side surface of the fixing column. The fixing plate is fixed to the lower portion of the front end surface of the fixing frame. Due to thedesign, an isolating function of an operating keyboard is achieved, the mounting support is arranged on the left side of the base, the lead screw is assembled in the mounting support, the ball nut holder is assembled on the annular side surface of the lead screw and connected with the left end surface of a player body through the connecting ring, the suspending plate is fixed to the right end surface of the mounting support, the design facilitates mounting of the emergency player, and the emergency player is simple in structure, convenient to operate, good in adaptability, excellent in protective property and high in reliability.

The present invention provides a high-voltage module for power electronic traction transformers, comprising: an insulating casing, the upper, lower, left, and right sides of the insulating casing are all closed, at least a part of the rear surface is an open surface, the front surface and the The outer edge of the rear surface has a back-shaped groove structure; the internal frequency conversion core, the internal frequency conversion core and the insulating shell are a nested structure, and the internal frequency conversion module at least includes water cooling components, IGBT components and busbars, Drive components, DC capacitors, control components, water and electricity integrated quick plug connector; wherein, the water and electricity integrated quick plug connector is drawn from the rear surface; the water cooling and heat dissipation assembly is located in the middle of the high voltage module, and the The high-voltage module is divided into left and right areas, and the cascade-side high-voltage IGBT and inverter-side high-voltage IGBT in the IGBT assembly are respectively placed on both sides of the water-cooled heat dissipation assembly, and the water-cooled heat dissipation assembly is directed toward the left and right sides. The externally arranged components are the IGBT assembly, the busbar and the IGBT drive assembly in sequence.

The invention discloses a VCO bias circuit with a single event effect prevention function. The VCO bias circuit comprises a load resistance bias module and a tail current circuit bias module, wherein the load resistance bias module generates a first bias voltage through a first switching tube unit and outputs the first bias voltage to a load resistor in a VCO loop, the tail current circuit bias module generates a second bias voltage through a second switching tube unit, outputs the second bias voltage to a tail current circuit in the VCO loop, and respectively feeds back the second bias voltage to the first switching tube unit and second switching tube unit. The VCO bias circuit has the single event effect prevention function, and has the advantages of simple structure, low cost, strong radiation resistance and so on.

The invention provides an automatic charging device for a routing inspection robot under a coal mine, and belongs to the field of mining charging devices. The device comprises a mobile terminal assembly and a fixed end assembly, and the mobile terminal assembly can make reciprocating motion towards the fixed end assembly along a guide rail. One end, close to the fixed end assembly, of the mobile terminal assembly is provided with an electrode socket, and one end, close to the mobile terminal assembly, of the fixed end assembly is provided with an electrode fixing seat. The electrode fixing seat is provided with an electrode plug matched with the electrode socket. The outer ring of the electrode plug and the outer ring of the electrode socket are provided with explosive-proof assemblies. Each explosive-proof assembly comprises a locking sleeve and a fixed sleeve, and the locking sleeve is fixed at one end, close to the fixed terminal assembly, of the mobile terminal assembly, and is disposed at the outer ring of the electrode socket. The fixed sleeve is disposed at one end, close to the mobile terminal assembly, of the fixed terminal assembly, and is disposed at the outer ring of the electrode plug. The locking sleeve and the fixed sleeve are in detachable fixed connection. The device has a explosive-proof function, is high in safety, can achieve automatic charging and switching-off, and improves the automation degree of the coal mine.