2results about How to "Avoid damage and failure" patented technology

This invention discloses a frogman underwater propulsion vehicle and its assembly method, comprising a main body shell, an adjustment assembly, and a transport compartment. A fairing and a propeller hub are installed at the tail of the main body shell, with propeller blades evenly distributed circumferentially around the hub. The adjustment assembly includes a sliding guide rail, a limiting rod, a pulling rod, a sliding block, a connecting block, a rotating shaft, a suspension block, and a limiting hole. The sliding guide rail includes two sliding grooves at the top and bottom of the adjustment assembly. The transport compartment includes a water pump adjustment compartment, a ballast compartment, a cargo compartment, and a frame. This invention adjusts the center of gravity of the transport device through the adjustment assembly, increasing the stability of the underwater propulsion vehicle during navigation. By setting up the ballast compartment to ballast and de-ballast the transport device, the frogman underwater propulsion vehicle maintains neutral buoyancy at all times, thereby achieving higher propeller efficiency.

The utility model provides an automobile die safety protection assembly which comprises a working table top, a lower die is installed in the middle of the top of the working table top, a protection mechanism for protecting an automobile die is arranged on the top of the working table top, and the protection mechanism comprises an assembly frame. The two assembling frames are installed at the two ends of the top of the working table correspondingly and are close to the two ends of the lower mold correspondingly, two-way screws are installed between the tops and the bottoms in cavities of the two assembling frames correspondingly, and the upper portions and the lower portions of the outer sides of the two-way screws are sleeved with movable sliding blocks correspondingly. When the lower die makes contact with the upper die, the contact portion of the lower die and the upper die can be protected through the protection mechanism, damage to the die caused by force generated when the lower die makes contact with the upper die is reduced, a descending stamping device is buffered, certain damage to the die caused by instant stamping force is reduced, and the conditions of shaking and deviation are reduced.