15results about How to "Flexible selection" patented technology

This utility model relates to the field of grinding wheel switching technology and discloses a multifunctional grinding machine device for rapid grinding wheel switching. It includes a worktable with a support mounted on it. A ring is mounted on the upper end of the support, a turntable is positioned on the front side of the ring, and a retaining ring is mounted on the rear side of the turntable. Through design, the ring on the support and the retaining ring on the rear side of the turntable are rotated and engaged. When changing grinding wheels of different specifications, the first bolt on the L-shaped support arm is loosened, the turntable is rotated to move the required grinding wheel to the working position, and the turntable is then re-fixed, thus quickly completing the grinding wheel adjustment. During grinding, the motor drives the drive gear to rotate, meshing with the driven gear in the working position, thereby driving the corresponding grinding wheel to rotate. This design allows for the flexible selection of grinding wheels of different specifications as needed, realizing the multifunctional grinding capability of the equipment. Furthermore, the grinding wheels are connected via a sleeve, a rotating shaft, and a second bolt, allowing for quick disassembly and replacement when a single grinding wheel wears out.

The present application relates to a gas tracing method, in particular to a kind of environmental identification and tracing method, system and medium based on multi-modal cooperation, method includes: collection contains gas plume visual image and contains gas response signal olfactory signal;Visual image is preprocessed and visual feature is extracted, and visual depth feature vector is obtained;Olfactory signal is preprocessed and olfactory feature is extracted, and olfactory feature vector is obtained;Cross-modal fusion obtains fusion feature vector;Physical constraint loss function is constructed, and physical consistency correction is carried out, and modified fusion feature vector is obtained;Output gas concentration space-time distribution result.Compared with prior art, the present application solves the problem that prior art cannot realize high-precision online monitoring and tracing of multi-component gas.The scheme improves the identification accuracy of gas component, the multi-component distinguishing ability and real-time response performance in complex environment through the integration of visual monitoring and olfactory monitoring, combined with multi-modal fusion algorithm and physical consistency correction.

The invention discloses a small-size high-efficiency large-current lithium battery active equalization circuit and a control method thereof, the small-size high-efficiency large-current lithium battery active equalization circuit comprises active equalization modules which are connected in parallel between two connected battery cells, and each active equalization module is composed of four switching tubes and a group of resonance branch circuit which is formed by connecting an inductor and a capacitor in series; n-1 active equalization modules are needed for a battery pack composed of N battery cells. The LC series branch serves as an energy temporary storage unit to replace a traditional inductance type single inductor or capacitance type multiple capacitors, the number of elements is reduced, meanwhile, low-loss energy transfer is achieved through resonance characteristics, and the equalization scheme has the advantages of being small in size, large in equalization current, small in equalization energy loss between battery cells, high in efficiency and the like.

The invention provides an axial magnetic flux electric joint module system for an assembly modular robot, which comprises a plurality of functional assemblies, and the plurality of functional assemblies comprise a driver assembly, an encoder assembly, a brake assembly, an axial magnetic flux motor assembly, a speed reducer assembly and a torque sensor assembly, each functional assembly comprises a shell, a functional device, an electrical connector and a mechanical connection structure, the functional device and the electrical connector are both installed on the shell, the mechanical connection structure is arranged on the functional device, the functional device is used for achieving the function corresponding to the target functional assembly, and the mechanical connection structure is used for achieving the function corresponding to the target functional assembly. The electrical connector is used for realizing current bridging and signal transmission among the functional components, the mechanical connection structure is used for physical structure connection among the functional components, and the plurality of functional components are stacked in sequence to form the joint module system.

This utility model discloses a flatbed cart for straightening and laying copper-plated round steel for rail transit, comprising a flatbed cart and straightening, placement, and stacking components mounted on the flatbed cart. The stacking component includes a bidirectional lead screw mounted on the flatbed cart and two limiting structures mounted on the bidirectional lead screw. The two limiting structures move relative to each other along the length of the bidirectional lead screw. A sleeve is installed on the flatbed cart, which slides in conjunction with the two limiting structures. Several positioning structures connected to the two limiting structures are installed on the sleeve. This utility model has a simple structure, integrating the placement, stacking, and straightening functions of copper-plated round steel into a single flatbed cart design. This overcomes the limitations of separating straightening and laying processes in traditional methods, effectively reducing process changeover time and manual operation. The functional modules can be freely combined and flexibly selected, significantly improving the laying efficiency and operational continuity of copper-plated round steel for subway supports.

This invention discloses a multi-station synchronous accuracy testing device and method for through-type current transformers, relating to the field of current transformer testing technology. The scheme configures the channel mapping relationship and sampling order of the ADC sampling unit to satisfy symmetry conditions, enabling each tested through-type current transformer to obtain two symmetrical sampled values ​​or one sampled value at the same preset virtual intermediate time in a round of polling sampling. The calibrator arithmetically averages the symmetrical sampled values ​​of each tested transformer to obtain an equivalent sampled value aligned to the virtual intermediate time. Then, it calculates the ratio difference and angle difference based on the fixed delay compensation set by the system calibration. This invention eliminates the sampling time differences between channels caused by polling sampling during the sampling stage, unifying the equivalent sampling times of all channels. The compensation object converges from multiple different delays to a single system-level fixed delay, improving the accuracy of multi-station batch testing and the versatility and adaptability of the calibrator.

This invention discloses an azeotropic phase change cooling rotor assembly, a Roots compressor, and a vacuum pump. The rotor assembly includes a main rotor with circumferentially shaped through-holes and an axially oriented internal through-hole on the rotor shaft. A first and a second auxiliary rotor are mounted at both ends of the main rotor. Rotor sealing plates are arranged on the inner sides of the two auxiliary rotors to seal the shaped through-holes and form a first azeotropic flow region. One end of the rotor shaft is connected to a drive motor, and the other end connects to a swirl cooling pipe with swirl fins on its outer wall, forming a second azeotropic flow region through end sealing. The first and second azeotropic flow regions are filled with an azeotropic phase change cooling medium. This invention is based on the azeotropic phase change heat transfer principle and combines a swirl cooling structure to achieve efficient heat dissipation. The overall structure is simple and compact, eliminating the need for complex cooling equipment, effectively suppressing rotor temperature rise during operation, and avoiding rotor jamming caused by high-temperature thermal expansion.

The utility model relates to a clamping device for conductor detection, which comprises a sliding guide rail and a pair of two detection clamps, and can be used for cable detection as well as detection of conductors such as bars, pipes and the like. The detection clamp comprises a sliding support and a clamping body, the bottom of the sliding support is slidably connected to the sliding guide rail, and the top is connected with the clamping body. A plurality of bolt holes are evenly formed in the side face of the clamping body in the same circumferential direction, a conductor core end face electrifying screw hole and a plurality of conductor side face electrifying wiring holes are formed in the bottom face of the clamping body, a bolt is correspondingly connected into each bolt hole, the end face of each bolt is connected with an arc plate, and an electric wire is welded or fixed through a screw at the bottom end of each arc plate. The power-on wiring holes are led out from the bottom; and a circle of insulating material is adhered between the clamping main body and the sliding bracket. Compared with the prior art, the tool has the advantages that the bolt and the arc plate can be flexibly selected and adjusted according to different conditions of conductor profiles to be measured and diameters, the fixation is stable and reliable, the universality is high, and the like.

The present application relates to the field of microbial technology, in particular to Citrobacter werkmanii and its application. The present application provides Citrobacter werkmanii SDT3 with dual functions of denitrification and cobalt (III) reduction under aerobic conditions, and the preservation number is CCTCC NO: M 2025956. The strain can efficiently realize aerobic denitrification reduction of nitrate and nitrite under aerobic conditions without additional ammonia nitrogen, and simultaneously complete the synchronous reduction of cobalt (III) -histidine complex (Co(III)His). The strain is suitable for treating flue gas denitration failure absorption liquid containing Co(III)His, nitrate and nitrite, has the advantages of high absorption liquid regeneration efficiency, mild process conditions, wide application range of organic carbon source, no secondary pollution, easy engineering application, etc.; can provide an efficient and stable microbial technology solution for efficient regeneration of flue gas denitration absorption liquid, long-term continuous and stable operation of the denitration system.

The utility model discloses a high -efficient cordless electric drill motor relates to cordless electric drill technical field, the utility model discloses a cordless electric drill body, the bottom fixedly connected with battery box of cordless electric drill body handheld handle, the chuck of cordless electric drill body front end is fixed with drill bit, and the lower portion of drill bit is provided with the chip collecting cover, and the chip collecting cover swing sleeve is connected on the guide rod, and the guide rod is provided with two, and the rear end of two guide rods is all fixed on cordless electric drill body, and the spring sleeve is connected on cordless electric drill body, and the bottom of the front end of chip collecting cover is provided with the chip collecting cylinder, and the inside communication of chip collecting cylinder is passed through the chip guide hole and chip collecting cover, and the lower end screw joint of chip collecting cylinder has the cylinder cover. The utility model discloses the chip collecting cover of setting, can catch the drill cutting produced in the drilling process of drill bit, and will drill cutting through the chip guide hole and import the chip collecting cylinder in the collection, prevents the drill cutting from falling at random, and personnel need not utilize bag and so on and catch the drill cutting produced, is more convenient.

The utility model discloses a loosening detection circuit of a plugging terminal. The detection circuit comprises a first power supply end, a second power supply end, a detection unit and a signal processing unit. The first power supply end is connected with the detection unit; the second power supply end is connected with the second connecting end; the detection unit is connected with the first connecting end and is used for outputting a loosening detection signal of the plugging terminal piece; the signal processing unit is connected with the detection unit, and the signal processing unit is used for receiving the loosening detection signal of the plugging terminal piece and determining whether the plugging terminal piece is loosened or not according to the loosening detection signal; wherein the first connecting end and the second connecting end are used for connecting two connecting ends of the plug-in terminal piece. According to the loosening detection circuit of the plug terminal piece, when the plug terminal piece is loosened, the corresponding detection signal can be detected and output, so that the signal processing unit can identify whether the plug terminal piece is loosened or not, corresponding processing is carried out, the safety of a circuit board is improved, and meanwhile, under the condition that the safety is guaranteed, the safety of the circuit board is improved. Model selection of devices in the circuit board is more flexible, and devices with low cost can be selected to save cost.

The invention discloses a method for constructing a micro solid-state battery and observing an interface and belongs to the field of solid-state battery materials. Due to the complexity of the interface problem, the change of the solid-solid interface in the charging and discharging process is difficult to observe under high temporal-spatial resolution by the existing in-situ characterization. According to the method, the micron-sized solid-state battery is constructed in situ in a transmission electron microscope, the penetrability of a high-energy electron beam is utilized to observe the structure and component changes of a negative electrode / solid-state electrolyte interface, a positive electrode / solid-state electrolyte interface and an electrolyte in the solid-state battery in the charging and discharging process, and then the microscopic operation mechanism and the failure mechanism of the solid-state battery are explored. The method is simple and convenient to operate, low in cost and high in repeatability, provides key evidence and new insight for solid-state battery research, and provides theoretical guidance for designing solid-state batteries with long cycle life.

The utility model relates to the field of tobacco industry and mechanical manufacturing and processing, in particular to a bent tobacco storage and transportation frame. A tool mould is needed for traditional splicing to guarantee the size, machining time and labor cost are increased, the bent tobacco storage and transportation frame comprises a sectional material, the sectional material is divided into a first folding face and a second folding face through a plurality of folding openings, and a guide groove is formed between the first folding face and the second folding face in the radial direction. The first folding face and the second folding face are attached to each other through a guide groove, a water leakage hole is formed in the inner bottom face of the sectional material, arc-shaped creases are arranged at the two ends of the guide groove, and the curvature radius R of the arc-shaped creases and the thickness T of the sectional material meet the formula that R: T = 1: 2. According to the structural design, manpower is saved, efficiency is improved, multiple fixing modes are combined, connection is stable, different assembling requirements are met, and the working efficiency of production is improved.

This invention discloses a modular radiation-hardened power supply based on reconfigurable technology, relating to the field of switching power supply circuit technology. The power supply is composed of physically independent power supply module units, signal module units, primary power module units, secondary power module units, and magnetic component units, which are then deconstructed and interconnected. The power supply module units are responsible for supplying power to the control and drive circuits; the signal module units act as the control center, outputting drive signals and performing synchronous rectification control; the primary and secondary power module units are respectively connected to the primary and secondary sides of the magnetic component units to form a power conversion circuit. This invention, through standardized modular design and differentiated packaging processes, solves the problems of long development cycles, poor flexibility, and difficult heat dissipation under high current in traditional radiation-hardened power supplies, aiming to provide a highly reliable and easily reconfigurable power supply solution.