3results about How to "Uniform section" patented technology

The invention relates to the technical field of tunneling parameter prediction, in particular to a complex stratum TBM tunneling parameter real-time prediction method. According to the technical scheme, the method comprises the steps of data collection and preprocessing, model selection and training, model prediction and evaluation, and result application and feedback. According to the data collection and preprocessing, operation parameters are collected in real time through various sensors on TBM equipment, wherein the operation parameters comprise the cutterhead rotating speed, the penetration degree, the thrust, the torque, the total thrust, the gripper shoe pressure, the propelling speed, the current and the power. Real-time prediction of the TBM tunneling parameters of the complex stratum is achieved by fusing the machine learning algorithm, the tunneling parameters can be optimized in real time, and the construction efficiency is improved; the tunneling process is stabilized to guarantee the engineering quality; tool abrasion is reduced, energy consumption is reduced, and the construction cost is reduced; equipment faults and accidents are prevented, and construction safety is guaranteed; and construction technology innovation can be promoted, intelligent construction management is achieved, the comprehensive benefits of TBM construction are comprehensively improved, and efficient, safe and intelligent development of tunnel (roadway) engineering is promoted.

The invention provides a guide pipe end deburring tool and a deburring method. The guide pipe end deburring tool comprises a tail handle, a shell, a first spring, a second spring, an outer tool bit, an inner tool bit and a pin. One end of the tail handle is connected with the clamping end of the speed-adjustable electric drill, and the other end is located in the cavity of the shell and fixedly connected with one end of the shell; the inner tool bit is located in the outer tool bit, and the first spring and the second spring are arranged on a body at the other end of the tail handle in a stacked and sleeved mode and limited between the end face of the middle section of the tail handle and the end face of the outer tool bit. The shell, the outer tool bit and the inner tool bit are fixed in the radial direction through pins, and the pins can slide along long-strip-shaped holes in the side walls of the shell and the outer tool bit. Inner conical cutter teeth and outer conical cutter teeth are arranged at the ends, away from the spring, of the outer cutter head and the inner cutter head correspondingly, under driving of an external speed-adjustable drill bit, burrs on the outer circle and the inner circle of the end face of the guide pipe can be removed at the same time, quality consistency is high, operation is easy, and efficiency is high.

The application belongs to the technical field of additive manufacturing material preparation, and particularly relates to a preparation device and method of high-fiber-content reinforced polyether ether ketone 3D printing wire rod, which comprises: a material source assembly for providing an impregnated tape; a filament splitter in communication with the material source assembly, which divides the wide impregnated tape into multiple narrow strips through a cutter shaft and a circular disc split cutting knife; multiple multi-nozzle step-by-step pultrusion devices corresponding to the narrow strips, which are provided with multiple nozzles with gradually reduced diameters at the discharge end, and are used for heating, guiding, pressurizing, impregnating and cooling the narrow strips; and a wire collecting reel in communication with each pultrusion device. Through the parallel process of "first dividing and then pulling", the application solves the problems of low forming freedom of the wide pre-impregnated tape, large damage and high cost in traditional wire rod preparation, and realizes efficient and low-damage continuous production of high-performance 3D printing wire rod.