2results about How to "Increase guide length" patented technology

The application provides a tool for bonding and curing of a bevelled reverse thrust rocket nozzle, which comprises a fixing base and an upper pressing plate; the fixing base is used for fixing a nozzle shell so that a nozzle port of the nozzle shell is vertically arranged; the upper pressing plate is installed above the fixing base through a connecting piece; a threaded through hole is formed in the upper pressing plate and is arranged along an axis of a bonding surface of a throat liner and the nozzle shell; and a pressing assembly for pressing the throat liner against the nozzle shell is threadedly connected to the threaded through hole. The tool adopts a groove type design which is convenient for product installation; through coaxial screwing force acting on a bonding conical surface, the nozzle shell is bonded more conveniently and quickly; meanwhile, the upper and peripheral fields of view are not hindered, the bonding process is more clear and controllable, and the removal of excess overflow glue is more convenient than the existing bonding condition; assembly surface abrasion is avoided; the nozzle bonding quality is obviously improved; and the tool is suitable for bonding and curing of most special-shaped bevelled reverse thrust rocket nozzles.

The utility model belongs to the field of building construction, and discloses a punching filling pile device which comprises a pile casing, an impact hammer and a steel cable connected with the impact hammer. The upper end and the lower end of the pile casing are open, the upper end of the pile casing is detachably connected with a limiting plate, a limiting hole is formed in the limiting plate, and the limiting hole and the pile casing are coaxially arranged. The upper end of the impact hammer is fixedly connected with a first guide rod coaxially arranged, the first guide rod is hollow, the upper end and the lower end of the first guide rod are open, and the first guide rod sleeves the steel cable; the end, away from the impact hammer, of the first guide rod is detachably connected with a coaxially-arranged second guide rod, the second guide rod is hollow, the upper end and the lower end of the second guide rod are open, and a first through groove allowing a steel cable to penetrate through is formed in the peripheral wall of the second guide rod; and through cooperative arrangement of the limiting plate, the first guide rod and the limiting hole, the guidance quality of the impact hammer in the falling process is effectively improved, the problems that the impact hammer deflects and even collides with a pile casing due to shaking of a steel cable are solved, and the hole forming perpendicularity is improved.