70results about How to "Sufficient preload" patented technology

The invention relates to the technical field of tablet preparation, and discloses a tablet preparation device for avoiding tablet splitting. The tablet preparation device for avoiding the tablet splitting includes a material box and is characterized in that the interior of the material box is fixedly connected with a rotating shaft in a sleeving mode, the bottom end of the material box is fixedlyconnected with a conveying tube, the bottom of the conveying tube is fixedly connected with a feeding opening, the outside of the rotating shaft is fixedly connected with a connection disk in an inserted mode, the inside of the connection disk is fixedly connected with an electromagnet, a spring is movably connected to the bottom end of the connection disk, and is located on the outer side of theelectromagnet, a ball screw is movably connected to the inner part of a guide rail, the bottom end of the ball screw is fixedly connected with a male die, and the bottom end of the rotating shaft is rotatably connected with a female die seat. According to the tablet preparation device for avoiding the tablet splitting, magnetism is generated through the electromagnet to adsorb the guide rail, theconnecting disk and a fixing block are driven to rotate through the rotating shaft, thus the female die is transported above a male die, the ball screw is used in combination with the guide rail and the electromagnet in order to achieve the effects of sufficient pre-pressure and long extrusion time.

The invention discloses a carbon fiber cloth composite concrete bridge deck seamless expansion joint. Concrete bridge deck slabs are arranged below an asphalt paving layer; the concrete bridge deck slabs are arranged on the two sides of a groove; the lower ends of steel bar embedded parts are arranged in the concrete bridge deck slabs; the upper ends of the steel bar embedded parts are arranged inthe asphalt paving layer; the steel bar embedded parts comprise a left steel bar embedded part and a right steel bar embedded part; the steel plate is arranged between the left steel bar embedded part and the right steel bar embedded part, the steel plate is arranged above the groove, the U-shaped grooves are bilaterally symmetrical along two sides of the groove, PAN-based carbon fiber cloth is wound on the left steel bar embedded part and the right steel bar embedded part, and the rest parts outside the groove are expansion joint fillers. According to the structure construction method for enhancing the anti-reflection crack performance of the bridge seamless expansion joint starting from the source of crack generation, the high-elasticity high-modulus fiber cloth is used for bearing thetransverse tensile stress of the seamless expansion joint, generation and expansion of reflection cracks are prevented, and then reflection cracks of an additionally-laid asphalt surface layer are reduced or prevented.