8 results about "Fracture prevention" patented technology

This invention provides an information processing device, an information processing method, and a program that provide users with useful information on fracture risk. [Solution] The program is a program that causes a computer to function as an information processing device that supports fracture prevention, the information processing device comprising: prediction means for predicting the fracture risk of each of the multiple subjects from the health information of the multiple subjects; and selection means for selecting subjects for fracture prevention based on the fracture risk of the multiple subjects.

The application provides a roll bending forming fracture prevention control method for a complex cross-section ultrahigh-strength steel thin-walled component and relates to the technical field of roll bending forming. The roll bending forming fracture prevention control method specifically comprises the following steps: in the whole roll bending forming process, taking the Oyane ductile fracture criterion as the evaluation standard for fracture generation, comprehensively considering the fracture prevention control by combining the roll bending forming strategy and the roll bending forming process parameters, when the process parameters of the machine set are configured, according to the difference of different machine set parameter ranges, solving the fracture prevention mathematical model, in the adjustable interval, using the process parameter adjustment method, according to the actual production conditions, setting the process parameter value range and the optimal trend value, so as to solve the optimal process parameter combination. The application can effectively prevent the roll bending forming corner fracture defects of the complex cross-section ultrahigh-strength steel thin-walled component, saves the production cost, improves the quality and the yield of the complex cross-section ultrahigh-strength steel thin-walled component, and is beneficial to the large-scale industrial production and popularization.

The utility model relates to the technical field of molds, in particular to a rubber plug vulcanization mold heating fracture prevention tool which comprises a base, a lower mold and an upper mold are arranged at the upper end of the base, through grooves are symmetrically formed in the upper mold in a penetrating mode, fracture prevention structures are arranged in the two through grooves, and each fracture prevention structure comprises a fan. Two through grooves are formed in the upper die and the lower die, fixing rings are fixedly mounted in the two through grooves, spring shape memory metal is fixedly mounted at the upper ends of the two fixing rings, and sealing plugs are fixedly mounted at the upper ends of the two spring shape memory metal. The spring-shaped memory metal can eject the sealing plug to be located at the heat dissipation barrel, so that sealing between the lower mold and the upper mold can be relieved, meanwhile, through the characteristics of the spring-shaped memory metal, the higher the temperature of the spring-shaped memory metal is, the higher the extending length of the ejected sealing plug is, and the higher the heat dissipation rate of the fan to the lower mold and the upper mold is, so that dynamic heat dissipation can be achieved, and the service life of the fan is prolonged. And thermal fracture is avoided.

The application discloses a shield tunnel advanced water detection device and method based on an Ag / AgCl electrode, which comprises a water detection sensor arranged on a shield machine cutter disc spoke, the water detection sensor comprising an Ag / AgCl electrode and a wire connected with the Ag / AgCl electrode, and being used for measuring the soil potential difference at a shield tunnel face in a shield machine tunneling process; a water detection sensor protective sleeve covering the outer periphery of the Ag / AgCl electrode and being installed on the shield machine cutter disc spoke, and being used for preventing the broken rock in the soil from damaging the water detection sensor in the shield machine tunneling process; a kink and fracture prevention mechanism connected with the wire connected with the Ag / AgCl electrode, and being used for preventing the wire from being wound or knotted due to rotation in the shield machine cutter disc rotating tunneling process; and a data monitoring and early warning device connected with the Ag / AgCl electrode through the wire, and being used for collecting and analyzing the measured data. The application can predict the distribution and content of water in front of the shield tunnel face, thereby providing reliable technical guidance and prediction.

This invention discloses a screw fracture prevention method based on vibration testing of wall-mounted products, comprising: selecting screws that meet predetermined standards; using an accelerometer to monitor the vibration value at the installation point of the wall-mounted equipment in real time; adjusting the input control of the test bench; conducting a pre-test before the formal test, and then tightening the screws a second time after the pre-test; during the formal test, monitoring the root mean square value of acceleration or the peak value of the time-domain signal at the equipment installation point in real time, judging the screw fracture risk based on the root mean square value of acceleration or the peak value of the time-domain signal, and terminating the test when a fracture risk is detected. By adjusting the input control of the test bench, the vibration input level is controlled to prevent overtesting, reducing the risk of screw fracture due to vibration overload from the source. Pre-testing and secondary tightening eliminate preload loss, reduce the risk of stress concentration, and improve the uniformity and stability of preload. This achieves early warning of fracture risk, gaining time for downtime and loss mitigation.

The invention relates to the technical field of steel pipe machining, in particular to a building engineering bending device with an anti-fracture mechanism, which comprises a horizontal bending table, a steel pipe is arranged on one side of the horizontal bending table, and an anti-fracture module for supporting the inner wall of the steel pipe is mounted in the steel pipe. One side of the steel pipe is also provided with a welding seam flaw detection identification module for performing flaw detection on the surface of the steel pipe; a vertically-arranged vertical bending table is installed on the top of the horizontal bending table. An auxiliary pushing module used for pushing the steel pipe in an auxiliary mode and a pipe bending module used for bending the steel pipe are further arranged on one side of the horizontal bending table. The vertical bending table which is vertically arranged is arranged above the horizontal bending table, the auxiliary pushing module and the horizontal bending mechanism are started, the bending action of the steel pipe in the horizontal direction is completed, the horizontal bending mechanism is started to be separated from the steel pipe, the vertical bending mechanism is started to be matched with the auxiliary pushing module, and the upward bending action of the steel pipe can be achieved; and multi-angle bending of the steel pipe is achieved, and the application range of the device is widened.

The invention discloses a gold bonding wire drawing device, and belongs to the technical field of metal wire drawing, the gold bonding wire drawing device comprises a mold assembly, a wire winding wheel assembly, a wire drawing wheel assembly, a rack and take-up and pay-off assemblies, the mold assembly is arranged in the center of the rack, the wire winding wheel assembly and the wire drawing wheel assembly are separately arranged on the two sides of the mold assembly, and the take-up and pay-off assemblies are arranged at the two ends of the rack. According to the core design, a buffering module frame with a buffering spring in a mold assembly can absorb the sudden change impact of tension through self-adaptive sliding of a mold table; the wire winding wheel assembly adopts a multi-stage diameter gradually-changed wire winding wheel and a ratchet groove and ratchet rod matching structure, so that overload slipping fracture prevention and adjustable tension threshold are realized; the take-up and pay-off assembly is provided with a turning screw and a guide wheel to guarantee uniform take-up. According to the invention, step-by-step precise reducing of the gold bonding wire can be realized, the processing stability and precision are improved, and the problems of easy breakage of the wire, low processing precision and the like caused by poor tension adjustment, rigid fixation of the mold and response lag of the existing wire drawing device are solved.

The application relates to the technical field of wire fracture prevention, in particular to a fracture prevention method and system for copper-coated steel wire stretching, which comprises the following steps: constructing a continuous state parameter sequence, extracting a stress transfer amount, a resistance release amount and a recovery delay amount based on the continuous state parameter sequence, and reconstructing a stress mapping sequence based on the stress transfer amount, the resistance release amount and the recovery delay amount; establishing a normal stretching fluctuation boundary and an abnormal accumulation boundary, obtaining a deviation value at a continuous sampling moment, comparing and analyzing the deviation value with the normal stretching fluctuation boundary and the abnormal accumulation boundary, and forming a fracture risk judgment result; and performing hierarchical control on the stretching speed in combination with the fracture risk judgment result. The application can reduce the risk accumulation state in advance before a high fracture risk is formed, so that the fracture probability is reduced, and the stability and continuity of the stretching production process are improved.