4results about How to "Uniform traction" patented technology

The utility model relates to the technical field of drawing machines, and discloses a seven-roller type drawing machine which comprises a hollow machine body and a plurality of rotatable drawing rollers installed on one side of the hollow machine body, an annular groove is formed in the side, close to the drawing rollers, of the hollow machine body, and a fixing mechanism is connected into the annular groove in a sliding mode. One side of the fixing assembly is detachably connected with a traction assembly used for pulling the fixing assembly to move, the fixing assembly comprises a movable transverse rod, the movable transverse rod is slidably connected into the annular groove, the top of the movable transverse rod is slidably connected with a fixing plate, and the bottom of the fixing plate is fixedly connected with two first protruding blocks. Through traction of the traction assembly, the fixing assembly can move along the annular groove, the packing belt is pulled to the position of the winding device, the packing belt can move around the multiple traction rollers, meanwhile, uniform traction force can be given to the packing belt, and the stretching effect of the packing belt is improved.

The utility model relates to the technical field of textile, and discloses a pneumatic yarn transmission mechanism, which comprises a multidirectional cylinder frame, a pneumatic transmission mechanism, a pneumatic transmission mechanism, a pneumatic transmission mechanism, a pneumatic transmission mechanism, a pneumatic transmission mechanism and a pneumatic transmission mechanism, and is characterized in that the multidirectional cylinder frame has multiple orientations and is internally used for transmitting yarn bodies; the inner transmission wheel is rotationally arranged in the multidirectional cylinder frame and is used for guiding a wire body; the inlet cover is detachably fixed at the input end of the multidirectional cylinder rack wire body; and the outlet cover is detachably fixed to the output end of the multidirectional barrel rack wire body, and two sets of clamping wheels are arranged on the inner side of the outlet cover, used for clamping the wire body and driven by gas to rotate. According to the utility model, through full-section uniform stretching, stress concentration reduction and the synergistic effect of the multidirectional cylinder frame and the pneumatic driving clamping wheel, multidirectional synchronous stretching of yarns is realized, and the clamping wheel is driven by airflow to generate relative rotation, so that the yarns are uniformly pulled in the multidirectional cylinder frame, single-point stress concentration is avoided, the problem of preferential breakage of outer-layer fibers is effectively solved, and the production efficiency is improved. The quality is obviously improved.

The invention discloses a synchronous swivel construction method and system for an overpass railway double-width road swivel beam. The synchronous swivel construction method and system are suitable for large-tonnage swivel construction and synchronous swivel construction of a double-width swivel T-shaped structure on a single-hole or multi-hole reinforced concrete bridge with a large span, wherein the overpass railway, the expressway, the river, the canyon and the like are spanned on the single-hole or multi-hole reinforced concrete bridge. By adopting a bridge swivel construction method and adopting a construction process of construction first and then swivel and synchronous swivel, pouring prefabrication is performed along the two sides of a railway respectively, and swivel construction is performed synchronously in the same direction. In the construction process, the driving safety of existing line facilities and railway running trains is ensured, meanwhile, the construction quality of the continuous beam is ensured, and it is ensured that the whole project engineering construction period is completed in advance.

The utility model discloses a based on the double circle track of flexible initiative barrier formula carrier trolley of variable diameter, including chassis component, walking wheel subassembly, walking wheel power system subassembly and flexible clamping system subassembly, and walking wheel subassembly includes four walking wheels of matrix arrangement, walking wheel power system subassembly is connected with four walking wheels, is used for driving four walking wheels and walks on double circle track, flexible clamping system subassembly includes four guide wheels and guide drive system of four guide wheels are connected with opposite settings, and guide wheel can roll along the inner wall of double circle track both sides, and guide drive system can adjust guide wheel automatic keep with the inner wall of double circle track constant pressure contact according to the size between the inner wall of double circle track. Based on the double circle track of flexible initiative barrier formula carrier trolley of variable diameter, has solved the technical problem of traditional rigid structure easy to jam, derailment on the double circle track, and has high stability, strong environmental adaptability simultaneously.