4results about How to "Avoid tilting and falling" patented technology

The utility model provides an automatic steering device for controlling an axial flow fan, and relates to the technical field of axial flow fan control equipment, the automatic steering device comprises a fixed mounting frame, an elevation angle adjusting frame, an elevation angle adjusting rotating rod, an elevation angle adjusting worm, an elevation angle adjusting motor and a horizontal adjusting mechanism, the elevation angle adjusting frame is rotationally arranged on the installation transverse shaft in a sleeving mode, a semicircular gear disc is arranged on the lower end face of the elevation angle adjusting frame, the elevation angle adjusting worm is rotationally arranged on the fixed installation frame, the elevation angle adjusting motor is in transmission connection with the elevation angle adjusting worm, and the elevation angle adjusting rotating rod is rotationally arranged on the fixed installation frame and is parallel to the installation transverse shaft. An elevation angle adjusting gear and an elevation angle adjusting worm gear are arranged on the elevation angle adjusting rotating rod, the elevation angle adjusting gear is meshed with the semicircular gear disc, the elevation angle adjusting worm gear is meshed with the elevation angle adjusting worm, and the horizontal adjusting mechanism is arranged on the upper end face of the elevation angle adjusting frame.

This utility model discloses a sperm cryopreservation tube for sealing, relating to the field of cryopreservation technology. The technical solution includes a tube body with symmetrically fixed blocks on its inner side. A cap is movably connected inside the tube body, and an inner sleeve is fixedly connected inside the cap. A pressing assembly is provided inside the inner sleeve, including a pressing pestle and a button. A sealing sheet is movably connected inside the cap, and a movable plate is fixedly connected to the outside of the sealing sheet. A second spring is fixedly connected to the outside of the movable plate, with one end of the second spring away from the movable plate fixedly connected to the inner wall of the cap. A groove is provided on the inner wall of the tube. By using the pressing assembly, the sealing sheet is pressed, causing it to slide on the inner sleeve and engage in the groove to seal the injection port of the tube body, preventing the cap from falling off and causing liquid nitrogen contamination. This simplifies the process of hand-held rotation when sealing the cap and tube body, quickly sealing the injection port of the tube body, preventing excessive air from entering the tube, and ensuring the sperm preservation effect.

The application relates to the technical field of transmission shaft assembly, and discloses an automobile transmission shaft assembly device, which comprises a press-fitting machine body, two limiting rods arranged on the inner wall of the press-fitting machine body, two clamping mechanisms arranged at the two ends of the limiting rods respectively, the clamping mechanisms being capable of clamping and fixing the end part of the transmission shaft to be assembled, and a supporting mechanism arranged between the two clamping mechanisms. The automobile transmission shaft assembly device is characterized in that the clamping mechanism is arranged, so that the staff only needs to put the end part of the transmission shaft into the clamping mechanism, the clamping mechanism can automatically adjust and clamp the end part of the transmission shaft when moving to the two ends of the press-fitting machine body, the workload of the staff is reduced, the press-fitting speed is improved, and after the end part of the transmission shaft is press-fitted with the shaft pipe, the supporting position of the shaft pipe can be automatically adjusted through the supporting mechanism, so that the transmission shaft is prevented from toppling to one side when the press-fitted transmission shaft is ejected.