15results about How to "Efficient work" patented technology

The invention relates to the technical field of relay protection, in particular to a power distribution network relay protection collaborative optimization method and system considering new energy, and the method comprises the steps: constructing a model architecture of a power distribution network; based on the new energy access characteristics, the topological structure of the power distribution network and the line parameters of the power distribution network, performing simulation and calculation on a short-circuit fault possibly occurring in the power distribution network to obtain a short-circuit current calculation result; determining relay protection equipment of the power distribution network according to the topological structure of the power distribution network, and determining a protection constant value of each protection section of the relay protection equipment according to a short-circuit current calculation result and a protection constant value setting principle; establishing an optimization model to update an iteration decision variable, and obtaining an optimal solution of the decision variable; and adjusting the configuration of the relay protection equipment according to the optimal solution of the decision variable. By comprehensively considering the influence of new energy access on short-circuit current distribution, the reliability and effectiveness of a relay protection system are improved, and the economic operation efficiency of a power distribution network is enhanced.

The utility model discloses a stopper and a vertical warehouse shuttle vehicle system, the stopper comprises a base, the base is provided with a gap in the direction impacted by a shuttle vehicle, a turnover stop block is arranged in the gap, and the base is also provided with a push rod mechanism in the direction of an elevator; the stop block comprises a body and an elastic piece, horizontal movement of the push rod mechanism under the stress effect is converted into rotary movement of the elastic piece, the elastic piece drives the body to turn over under the action of the rotary movement, when the body turns over to be higher than the notch, the shuttle vehicle is stopped, and when the body turns over to be lower than or flush with the notch, the shuttle vehicle is not stopped. The stop block and the gear shaft are linked through the elastic piece, that is, the stop block is driven to rotate through the elastic piece when the gear shaft rotates, the stopper can be buffered to a certain degree through connection of the elastic piece, gear damage or cylindrical head screw deformation is avoided, and the service life of the stopper is prolonged.

The invention discloses a tunnel rockburst dynamic susceptibility evaluation method driven by rockburst case data. During rockburst susceptibility evaluation, an incomplete or inaccurate database can reduce the accuracy of a susceptibility evaluation result. The method comprises the following steps: 1, collecting rockburst case data; 2, calculating the similarity of numerical factor indexes; 3, correcting the similarity of the category-type indexes; 4, evaluating the rockburst susceptibility; and 5, performing dynamic updating on the rockburst susceptibility based on data driving. According to the method, on-site rockburst susceptibility evaluation is more and more accurate through continuous increase of rockburst cases, and disaster-causing information factor characteristics can be extracted; meanwhile, the problem that the factor weight is manually given by a traditional statistical model is avoided, and the weight is prevented from being subject to subjective factors and sample data images.

This utility model discloses a battery box with a quick-release structure and its intelligent toilet. Key technical features include a battery box and a battery compartment detachably mounted on the battery box. The battery box has first locking portions on both sides, and the battery compartment has an installation cavity. Two linkage rods are movably mounted within the installation cavity corresponding to the first locking portions on both sides. Each linkage rod has a second locking portion that engages with the first locking portion. The linkage rods can move between a locked position and a released position. When the linkage rod is in the locked position, the second locking portion engages with the first locking portion; when the linkage rod is in the released position, the second locking portion disengages from the first locking portion. A linkage component is provided between the two linkage rods to ensure that driving one linkage rod causes the other linkage rod to move synchronously. This utility model, by setting a linkage component, ensures that the locked / released states of the linkage rods on both sides of the battery compartment are completely consistent, significantly improving the reliability of disassembly and assembly, making operation smoother, and optimizing the user experience.

This utility model relates to the technical field of charging pile auxiliary equipment, and in particular to an auxiliary device for flood control and drainage slope at the bottom of a charging pile. It includes a base, with a first symmetrical drainage channel at the bottom, a second symmetrical drainage channel in the middle, and third drainage channels on both the left and right sides. All three drainage channels are inclined. This utility model introduces a three-stage drainage channel structure, combined with drainage channels, to form a three-dimensional drainage network from top to bottom. This network can operate effectively under different rainfall intensities. Each drainage channel functions sequentially according to actual needs, guiding rainwater out step by step. This utility model replaces the cement base of the charging pile, fixing it to the foundation with bolts. The charging pile is then installed and fixed on two sets of this device. The easy assembly and disassembly design significantly shortens installation time, allowing the charging pile to be put into use in a shorter time, greatly improving the efficiency of infrastructure construction.

The invention relates to the technical field of packaging bag clamping, in particular to a packaging bag clamping mechanism of a weighing exchange mechanism of a full-automatic packaging machine, which comprises an equipment assembly, a filling weighing mechanism is arranged on the equipment assembly, a regulation and control mechanism is arranged on the equipment assembly, and a mounting frame is arranged on the regulation and control mechanism. Automatic operation can be achieved, the position of the mounting frame and the distance between the two clamping plates can be conveniently and rapidly adjusted, the two clamping plates can effectively and rapidly clamp the upper end of a packaging bag, the position of the packaging bag can be adjusted, filling and weighing work can be effectively conducted, and practicability is improved.

The present application relates to a device for separating iron chips in cleaning liquid, belonging to the technical field of separation, which comprises a separation box, a separation box, a partition fixedly connected to the bottom of the separation box in the vertical direction, a filter plate fixedly connected to the inner wall of the separation box in the horizontal direction above the partition, the filter plate and the partition divide the separation box into a separation area, a return liquid area and a salvage area, a water level sensor is installed in the return liquid area of ​​the separation box, and the water level sensor is used to monitor the liquid level in the return liquid area; a collection tank, a liquid extraction pipe is connected between the collection tank and the return liquid area of ​​the separation box, and a liquid extraction pump is installed on the pipe wall of the liquid extraction pipe; a cleaning component, the cleaning component is used to sweep the iron chips separated by the filter plate from the cleaning liquid into the salvage area; a salvage component, the salvage component is used to transport the iron chips in the salvage area from the separation box to the outside. The present application has the effect of improving separation efficiency.

The utility model discloses a ceramic processing raw material preparation device which comprises a supporting base and a stirring tank main body, a supporting frame body is arranged at the top of the supporting base, a stirring motor is arranged at the top of the supporting frame body, a stirrer extending into the stirring tank main body is arranged at the power end of the bottom of the stirring motor, and a supporting ring frame is arranged on the inner side of the supporting base. The stirring tank body is rotationally arranged on the inner side of the supporting ring frame, a supporting bearing connected with the stirring tank body is arranged on the inner side of the supporting ring frame, the supporting frame body is provided with a feeding pipe extending into the stirring tank body, a discharging pipe is arranged at the bottom of the stirring tank body, a discharging pipe is arranged at the bottom of the discharging pipe, and a discharging valve is arranged at the top of the discharging pipe. And a sealed rotating bearing is arranged between the discharge pipe and the discharge pipe. Compared with the prior art, the device has the advantages that the stirrer is arranged in the device to be matched with the rotation of the stirring tank main body, so that higher efficiency in the process of stirring, preparing and processing ceramic raw materials can be ensured, and the overall efficiency operation of ceramic processing is improved.

The invention discloses a remote maintenance system for serial port equipment. The remote maintenance system comprises a serial port client, a comprehensive management platform, a VPN virtual network service module and an industrial intelligent gateway, the serial port client is connected with the operation and maintenance software, interacts with the comprehensive management platform, is connected with the VPN virtual network service module and communicates with the industrial intelligent gateway; and the industrial intelligent gateway is connected with the field serial port equipment and is connected with the serial port client through the VPN virtual network to realize remote monitoring and maintenance. According to the remote maintenance system for the serial port equipment, through close cooperation among the serial port client, the comprehensive management platform, the VPN virtual network service module and the industrial intelligent gateway, the regional limitation is successfully broken through, and convenient and efficient remote monitoring and maintenance work of the serial port equipment is achieved.

The utility model discloses a rotary pay-off rack for cable processing, and relates to the technical field of cable processing, the rotary pay-off rack comprises a pay-off roller and adjusting columns, the left end and the right end of the pay-off roller are both provided with the adjusting columns, the tops of the adjusting columns are provided with a supporting frame, and the top of the supporting frame is provided with a servo motor; the middle of the adjusting column is connected with stable inclined columns in a front-back symmetry mode. According to the rotary pay-off rack for cable processing, the adjusting columns are symmetrically arranged and connected to the left end and the right end of the pay-off roller, and by means of the structural arrangement of the adjusting columns, on one hand, stable structural support can be provided for the pay-off roller, and on the other hand, the pay-off roller can be subjected to up-and-down lifting adjustment within a certain range in the vertical direction according to the diameter of a cable roll; and due to the structural arrangement of the stable inclined columns, good front-back structural support can be provided for the two sets of adjusting columns according to needs, so that the use and operation stability of the whole device is ensured.

The invention discloses an underwater pressure intelligent monitoring and feedback system for diving assistance, which relates to the technical field of diving and comprises an acquisition module, a microprocessor, a display module, an alarm module and a communication module, the acquisition module is used for acquiring underwater real-time data of the diving equipment during diving through a sensor, and the sensor is installed in the diving equipment; according to the underwater pressure intelligent monitoring and feedback system for diving assistance, a display module displays processed key parameters, an alarm module gives out a sound-light alarm under an abnormal condition to remind a diver to take measures, and a communication module sends state and position information to water surface monitoring equipment in real time; through multi-source data fusion and intelligent analysis, comprehensive and real-time safety monitoring and feedback are provided for divers, and the safety and reliability of diving activities are remarkably improved.

A mixed-flow ventilation fan includes a base plate and a panel that snaps onto it. An exhaust pipe is connected to the rear of the base plate. An air inlet is provided on the panel, communicating with the exhaust pipe on the base plate. A motor mount is connected to the inner wall of the exhaust pipe via several guide vanes. The motor mount is fixed to the central axis of the exhaust pipe by the guide vanes. A drive motor is installed inside the motor mount, and a front fan blade is mounted on the main shaft of the drive motor. The front fan blade rotates inside the exhaust pipe, drawing in air from the air inlet and expelling it from the rear of the exhaust pipe. The beneficial effects of this invention are: the front fan blade is a mixed-flow fan blade, and combined with an optimized number of blades and a reasonable design of the inclination angle, curvature, and angle of attack of the inner and outer edges of the blades, the blades can efficiently perform work on the air during rotation, generating excellent airflow characteristics that balance large air volume and high air pressure.

The utility model discloses a wrap yarn draw-off roller, relates to wrap yarn processing technical field, including draw-off roller member and cleaning member, said draw-off roller member left and right both ends are equipped with the support member, and the top of support member is connected with limit subassembly, and the cleaning member is connected to the support member close to the lower end of one side of draw-off roller member. According to the wrap yarn traction roller, the support components at the left end and the right end of the traction roller component are used, so that the limiting assembly and the cleaning component are erected on the upper side and the lower side of the traction roller component correspondingly, on one hand, good structural limiting can be provided for the traction roller component in the wrap yarn traction process, and the wrap yarn is prevented from deviating in the conveying process; and on the other hand, the surface of the traction roller component can be cleaned in real time, so that the surface cleanliness of the traction roller component is guaranteed, the quality of the wrap yarn conveyed in a traction mode is reduced, and meanwhile the use convenience and flexibility of the structure are guaranteed.

This invention discloses an axial flow fan assembly and its control method. The axial flow fan assembly includes a fan shroud, fan blades disposed within the fan shroud, a fan motor driving the fan blades to rotate, and a pressure balancing device. The pressure balancing device includes a housing, a piston, and a pressure balancing motor. Both the housing and the pressure balancing motor are detachably fixed to the outer wall of the fan shroud. The piston is slidably disposed within the housing, dividing the inner cavity of the housing into a first chamber and a second chamber. Both ends of the first and second chambers have openings facing away from each other, with the openings of the first and second chambers respectively facing the fan blades. The pressure balancing motor is driven by the piston, driving the piston to move along the length of the housing within the inner cavity. The pressure balancing device can balance the high and low air pressures generated on the surface of the fan blades during rotation. Therefore, this axial flow fan assembly has the advantage of good noise reduction performance.

The present invention relates to the field of intelligent transportation technology, and provides a traffic flow prediction method based on multi-level feature representation of dynamic memory graph, including: step 1, data collection and preprocessing; step 2, constructing a dynamic memory graph downsampling feature extraction unit LSTGM based on graph convolution and LSTM; step 3, time series multi-step feature extraction and fusion based on U-Net; step 4, constructing a LSTGM spatiotemporal feature dynamics model based on U-Net; step 5, future traffic state prediction; step 6, establishing a prediction model, using a stochastic gradient descent algorithm, and continuously optimizing the model hyperparameters through training to obtain a traffic state prediction scheme. The present invention can better predict traffic flow.