10results about How to "Satisfy positioning" patented technology

The application relates to the technical field of nuclear fuel assembly manufacturing, and particularly discloses a nuclear fuel assembly casting type upper tube seat machining clamp and a machining method, wherein the tube seat blank is placed on a bottom plate, a positioning top block is pushed, four positioning pins below a positioning push rod are centered with positioning holes of the tube seat blank; then a positioning rod B is screwed to shorten the distance with a positioning rod A; then locking screws and fastening bolts on the edge frame of a positioning frame plate are locked to fix the tube seat blank on the bottom plate, positioning is realized; finally, the positioning rod B is completely screwed out of the positioning rod A, the bottom plate, the positioning frame plate and the tube seat blank are integrally taken out and fixed on a machining equipment. The machining clamp and the machining method satisfy the positioning clamping and machining requirements of the casting type upper tube seat, the upper tube seat after machining completely satisfies the drawing and technical condition requirements, and the machining scheme satisfies the engineering production.

The application discloses a kind of based on meta learning's train operation electronic map construction method and system, the method first synchronously collects the geographic coordinate data of train high-precision positioning equipment RTK and the kilometre mark data of train operation monitoring device LKJ, time alignment and interpolation processing establish space-time alignment fusion sequence;Again, electronic map construction is converted into the regression problem of " longitude and latitude back kilometre mark", parameterized model is used to describe the nonlinear mapping relationship of two;Introduce deviation correction model to compensate RTK drift and kilometre mark error;Through meta learning mechanism, learn general initial parameters based on model-independent meta learning strategy in offline stage, and quickly adapt new line or dynamic deviation using a small number of samples in online stage;Finally, fusion correction data is generated and continuously updated electronic map.The application improves the precision of electronic map construction, new line adaptation capability and long-term stability, meets the high-precision positioning and real-time calibration requirements of rail transit.

The invention relates to a single-component polyurethane sealant as well as a preparation method and application thereof, and the single-component polyurethane sealant is prepared from the following raw materials in parts by mass: 25-50 parts of a polyurethane prepolymer, 30-60 parts of an inorganic filler, 0-5 parts of a tackifying aid, 5-10 parts of a thixotropic agent, 0-2 parts of a moisture scavenger and 0.01-1 part of a catalyst. The polyurethane prepolymer is prepared by reaction of polyester polyol, polyether polyol and isocyanate according to the mass ratio of (30-50): (20-30): (35-50). The single-component polyurethane sealant for sealing the gas meter has better thixotropy and higher curing speed, does not overflow in the construction process, has good solvent resistance, and can keep very small change rate of the mass change rate and the volume change rate after being soaked in a mixed solvent, so that the single-component polyurethane sealant can be used for sealing the gas meter. Good sealing performance can be maintained in the long-term use process.

The utility model provides a turbocharger compressor volute and bearing body connecting and positioning structure, which comprises a pressing shell, a bearing body, a positioning pin and an elastic retainer ring, the pressing shell comprises a positioning part and a pressing part, the bearing body comprises a connecting part, the positioning part is provided with a positioning pin hole, the connecting part is provided with a positioning half hole, the pressing part sinks inwards to form an annular groove, and the elastic retainer ring is arranged in the annular groove. And the outer ring side of the elastic check ring is clamped in the annular groove. In this way, the bearing body is circumferentially positioned through the positioning pin, the outer ring side of the elastic check ring is clamped in the annular groove through elastic deformation of the elastic check ring, the inner ring side achieves axial fastening of the pressing shell and the bearing body through axial pressing force generated by elastic force, the connecting mode is simple in form, the number of parts can be reduced, bolt connection is removed, and the bearing body can be assembled and disassembled conveniently. And the air leakage risk caused by punching a threaded hole in the end face of the pressing shell is avoided, the air outlet wall of the air compressor cannot be damaged, the installation efficiency is high, the installation positioning and mistake proofing requirements of various complex pressing shells can be met, and the working efficiency of enterprises is improved.

This utility model belongs to the technical field of compression hemostasis devices, specifically relating to a dual-point positioning compression hemostasis device. It includes a fixing part, a first hemostasis part, and a second hemostasis part. The first hemostasis part includes a first positioning frame and a first pressing element; the first pressing element and the first positioning frame are detachably connected. The second hemostasis part includes a second positioning frame and a second pressing element; the second pressing element and the second positioning frame are detachably connected. Both ends of the fixing part are slidably connected to the first and second positioning frames, respectively. It also includes an adjustment part; both ends of the adjustment part are detachably connected to the first and second positioning frames, respectively. The first and second hemostasis parts provide precise compression hemostasis at skin puncture points and vascular puncture points, effectively preventing subcutaneous hematoma and fistula endothelial damage, thus extending the lifespan of the arteriovenous fistula. The states of the first and second hemostasis parts can be adjusted to regulate the pressure intensity, meeting the dual requirements of dual-point positioning and precise pressure control.

The application discloses an industrial manufacturing traceability method based on a tree-ring architecture sharded block chain, and comprises the following steps: when abnormal data of an industrial product is detected, a tree-shaped path from a root quality inspection node to a target leaf quality inspection node is determined; according to a root aggregation data packet, inclusion verification is performed layer by layer along the tree-shaped path until the target leaf quality inspection node is reached; legality verification is performed in a shard corresponding to the target leaf quality inspection node; after the legality verification passes, chain integrity verification and quality parameter compliance verification are sequentially performed on each production and processing node based on a ring link; a production and processing node in which the first chain integrity verification fails or the quality parameter compliance verification fails is taken as a responsibility positioning node, and a traceability result corresponding to the responsibility positioning node is output. Through the precise traceability of layer-by-layer positioning along the tree-shaped path and process-by-process reconstruction verification along the ring link, precise fault positioning from the whole vehicle level anomaly to the specific process level is realized.

The utility model discloses a diaphragm perforation repairing device for a flow battery, which relates to the technical field of battery diaphragm detection and comprises an operating platform, and a lower template is arranged above the operating platform; limiting groove assemblies are arranged at the four corners of the top of the lower die plate correspondingly. Each limiting groove assembly comprises a plurality of second square grooves distributed in a matrix shape. A film limiting frame is arranged above the lower mold plate, inserting columns are integrally formed at the four corners of the bottom of the film limiting frame, and the inserting columns are matched with the corresponding second square grooves; a first square groove is formed in the bottom end of the second square groove and penetrates through the bottom end of the lower die plate. According to the diaphragm perforation repairing device for the flow battery, by arranging the first square groove, the cover plate, the diaphragm limiting frame and other structures, positioning and repairing of battery diaphragms with different sizes and different thicknesses are met, the use flexibility of the repairing device is improved, heat can penetrate through the first square groove and is conducted to the diaphragm through the cover plate, namely, the first square groove, and a heat conduction channel is formed; the heat utilization efficiency is improved.

This invention provides a precise method for measuring seepage in tunnel surrounding rock, relating to the field of tunnel safety monitoring and geological disaster prevention technology. It addresses existing technical problems such as large subjective errors in manual identification of seepage at the tunnel face, low accuracy of infrared image recognition, and inaccurate spatial positioning of seepage areas. This invention employs steps including multimodal sensing data acquisition, surrounding rock feature map creation, infrared image processing and seepage area extraction, image geographic reference establishment, precise seepage measurement, and result output alarms. It combines infrared image enhancement, lightweight convolutional neural network segmentation, and spatial projection correction technologies to achieve automatic identification, spatial visualization, and quantitative measurement of seepage areas. This invention boasts high identification accuracy, precise spatial positioning, high device integration, and strong mobility, making it suitable for rapid deployment and real-time monitoring at tunnel construction sites, providing an efficient and objective technical means for tunnel construction safety monitoring.

The utility model relates to a kind of rotary platform devices for substance detection, comprising: input module, motor driver module, main power module, voltage reduction module and raspberry module, main power module is powered for motor driver module and raspberry module by voltage reduction module, input module connects the ADC pin of raspberry module, motor driver module is connected with the stepping motor of rotary platform, motor driver module and raspberry module are connected, and motor driver module is used to receive the PWM signal output by raspberry module to realize the speed regulation of the stepping motor of rotary platform.The utility model described for substance detection rotary platform device, speed control precision improves, 16-bit ADC is collected knob signal and A4988 subdivision drive, and speed regulation precision is improved from ±10% to ±0.5%, meet the requirement of precision positioning and uniform rotation;Support real-time stepless adjustment, and on-site debugging time is shortened;Power compatibility is enhanced.

This utility model discloses a waterproof connector, comprising a shell and a body. The body is embedded within the shell. The body includes an insulating plastic encapsulator and an upper connector, a lower connector, terminals, and a sealing ring covered by the insulating plastic encapsulator. The upper and lower connectors are fastened together, and both are externally fitted with sealing rings. The terminals are inserted between the upper and lower connectors. This device simplifies the structure of the connectors. The two connectors have identical structures and are symmetrically arranged at their upper and lower centers to meet positioning and limiting requirements. Corresponding grooves on the two connectors form closed-loop grooves. Sealing rings are first fitted into the closed-loop grooves of the two connectors, and then the connectors are encapsulated using plastic molding. This gives the entire connector excellent waterproof performance, meets high waterproof rating requirements, and has low manufacturing costs.