3results about How to "Avoid mechanical friction" patented technology

The application provides a wire SI performance test board for rapid docking, comprising a test mainboard, a plurality of test output interfaces are arranged on the front surface of the test mainboard, a first SMA interface is arranged on the upper side of the test output interface, a second SMA interface is arranged on the left side of the test output interface, a test input interface is arranged on the back surface of the test mainboard, the test input interface is provided with a first magnetic attraction assembly, the test mainboard further comprises a test input connector, the test input connector is provided with a second magnetic attraction assembly, one end of the test input connector is rapidly docked with the test input interface through the second magnetic attraction assembly and the first magnetic attraction assembly, and the other end of the test input connector is provided with a wire docking interface. The application can significantly improve the wire connection / detaching efficiency, is simple and reliable to operate, reduces interface abrasion, and has good adaptability.

The liftable tea basket assembly comprises a cover body, a lifting shaft and a tea basket, the lifting shaft penetrates through the cover body, a lifting button is arranged at the top end of the lifting shaft, the bottom end of the lifting shaft is connected with the tea basket, a first magnetic attraction piece is contained in the lifting shaft and close to the bottom end, and a second magnetic attraction piece is contained in the lifting shaft and close to the bottom end of the lifting shaft. A second magnetic attraction piece is contained in the position, close to the lifting shaft, of the interior of the cover body, the lifting shaft ascends to enable the tea basket to be separated from the beverage, and the first magnetic attraction piece and the second magnetic attraction piece can be attracted in the radial direction. The first magnetic attraction piece is arranged in the lifting shaft, the second magnetic attraction piece is arranged in the cover body, and the first magnetic attraction piece and the second magnetic attraction piece cannot make contact with the beverage, so that the quality of the beverage can be prevented from being affected, and corrosion of the beverage to the magnetic attraction pieces can be effectively avoided.

This application relates to the field of anti-impact pressure relief and blasting technology in underground coal mines, and discloses a method for hydraulically pushing explosive cartridges into a casing in a directional long borehole in a coal mine. The method involves inserting a push casing into the directional long borehole, loading the explosive cartridge into a charging cylinder, and connecting it to a pressure-controlled expansion segmented positioning and sealing linkage module to form a charging assembly, which is then placed into the casing. Water is injected into the casing to push the assembly forward. When the water pressure reaches a first pressure threshold, the linkage module's rubber sleeve expands and presses against the inner wall of the casing to complete positioning. When the pressure reaches a second pressure threshold, the rupture disc breaks, the central internal flow channel is opened, and the water is discharged. Multiple segments of the charging assembly are then assembled and pushed forward sequentially. The water compressed by the subsequent moving components passes through the central internal flow channel and gaps of the previously positioned modules and is discharged to the bottom of the hole, eliminating fluid resistance. Finally, sealing cement slurry is injected into the annular gap, and after solidification, the explosive cartridge is activated. This application achieves unobstructed continuous lowering, reliable positioning, and efficient blasting of multiple explosive cartridges.