173results about How to "Guaranteed long-term stability" patented technology

The invention relates to a gas nano purifier. The gas nano purifier comprises a mounting seat, the gas storage bin is installed on the installation base and used for storing clean gas, the side wall of the upper portion of the gas storage bin extends upwards to form an installation plate, and a gas path through hole is formed in the middle of the installation plate; the gas-water separator is mounted on the mounting plate and is used for carrying out primary purification on to-be-cleaned gas; the adsorption tower is mounted on the mounting plate and is used for carrying out secondary purification on the to-be-cleaned gas; gas to be cleaned sequentially flows through the gas-water separator and the adsorption tower and then enters the gas storage bin; the adsorption tower is communicated with the gas storage bin through an exhaust pipe; and the exhaust pipe penetrates through the gas path through hole. Through the arrangement, the installation operation is greatly simplified, and the integrity and the space utilization rate of equipment are improved.

The invention discloses a matrix type temperature detection system and method based on temperature-sensitive diodes, the problems of complex wiring and large temperature drift of a traditional multi-node temperature measurement system are solved through M * N matrix layout, row and column time-sharing gating and constant current driving technologies, the system adopts an independent column constant current source to ensure the measurement consistency, and a high-precision ADC and a dynamic calibration algorithm are combined, so that the measurement accuracy is improved. And the precision of + / -0.2 DEG C is realized within the range of 50-150 DEG C. The method is particularly suitable for high-density temperature measurement scenes such as battery thermal management, electronic equipment overheating monitoring and the like.

The application relates to the technical field of lithium battery diaphragm, in particular to a high-stability lithium battery diaphragm and a preparation method thereof. The high-stability lithium battery diaphragm is prepared by the following steps: after a polypropylene film is irradiated by ozone and ultraviolet light in sequence, pre-deposition and pre-grafting are carried out on the surface of the polypropylene film, and then ultraviolet radiation treatment is carried out. The application realizes synergistic effect of nano-enhancement and self-repairing, solves the stability problem of traditional PP diaphragms in long-term cycles, and provides a reliable diaphragm solution for high-energy-density lithium batteries.

The utility model relates to the technical field of house building, and provides a modular integrated box house roof convenient to disassemble and assemble, which comprises a main frame, a plurality of reinforcing cross rods which are distributed at equal intervals along the width direction of the main frame are fixedly connected to the inner side of the main frame, a placing groove is formed in the top surface of the main frame, and a top plate assembly is placed on the inner side of the placing groove. The top of the main frame is fixedly connected with a first pressing piece used for pressing the top plate assembly, the two ends of the bottom face of the main frame are fixedly connected with guide rails, a bottom plate assembly is arranged between the two guide rails, one end of each guide rail is provided with an assembling groove, and the inner side of each assembling groove is provided with a second pressing piece used for pressing the bottom plate assembly. Traditional bolt connection is replaced by sliding fit of the clamping strips and the clamping grooves, installation steps are simplified, dependence on hole site precision is reduced, the problem of looseness caused by abrasion of bolt holes after repeated disassembly and assembly is effectively solved, and construction efficiency is remarkably improved.

The utility model discloses a kind of high-flux automatic sample introduction plasma mass spectrometer, the device includes the precision ceramic substrate with V-shaped locating slot, corrosion-resistant slider with permanent magnet array and electromagnet being sealed inside, stator coil assembly fixed to the outside of substrate and controller, stator coil assembly non-contact drive slider high-speed movement, when slider reaches target position vicinity, controller disconnects drive current and connects electromagnet, make the locating pin of slider bottom and the V-shaped locating slot on substrate forced engagement locking.The utility model separates high-speed drive and mechanical locking completely, uses high-rigidity, corrosion-resistant mechanical structure as final precision anchor point, fundamentally solves the positioning overshoot and vibration problem under high speed, and has excellent chemical corrosion resistance, significantly improves the operation efficiency, positioning accuracy and long-term reliability of device.

The utility model belongs to the technical field of waterproof of lower room structures, and particularly relates to a waterproof and anti-leakage structure of a basement connection node. In order to solve the problems that complex water seepage paths are difficult to resist, the maintenance cost is increased due to inconvenience in disassembly and maintenance and a waterproof layer is easy to crack due to insufficient deformation coordination of a rigid assembly and a wall body in the existing single-layer waterproof or permanent fixed installation design, the following scheme is provided: the waterproof structure comprises an existing wall body and a newly-built wall body; a multi-stage water seepage blocking path is formed through the inner waterproof layer and the water stop steel plate, and even if a single layer is damaged, underground water pressure can still be effectively resisted; quick disassembly and assembly are achieved through threaded connection and a clamping structure, wall damage is avoided, and the maintenance cost is remarkably reduced; the flexible coiled material and the sealing rubber strip absorb structural deformation displacement, the fixing block embedment design limits displacement of the waterproof belt, long-term stability under dynamic loads is ensured, and the technical problems that a traditional waterproof layer cracks, is difficult to maintain and poor in adaptability are comprehensively solved.

This application provides a data association method, apparatus, electronic device, and storage medium. The method includes acquiring a set of measurement tracks and a set of system tracks at the current time. The strategy track set includes a visual track subset, a forward radar track subset, and a side-rear radar track subset. The method involves matching the visual track subset and the system track set according to a first association rule to determine system-visual data pairs. It also involves matching the forward radar track subset and the system track set according to a second association rule to determine system-forward radar data pairs. Furthermore, it involves matching the side-rear radar track subset and the system track set according to a third association rule to determine system-side-rear radar data pairs. Finally, it involves updating the system track set based on the determined system-visual data pairs, system-forward radar data pairs, and system-side-rear radar data pairs.

The invention provides a construction method of a prefabricated assembled roadbed structure of a new and old expressway, which comprises the following steps: S1, carrying out stepped excavation on an old roadbed splicing area, and connecting a plurality of first splicing units with an old roadbed through a longitudinal insertion structure; s2, the first splicing units and the second splicing units are connected through first bolt connecting sets, and the second splicing units are connected through transverse inserting structures; s3, the adjacent first splicing units and the connected second splicing units are connected through second bolt connecting sets; s4, the first splicing unit and the second splicing unit are each connected with a leveling assembly used for adjusting the elevation and levelness of the first splicing unit and the second splicing unit; s5, sealing pieces are arranged between the first splicing units, between the first splicing units and the second splicing units and between the second splicing units; and S6, cast-in-place structures are arranged at the joints of all the splicing structures, the site cast-in-place workload is reduced, and rapid splicing of the new roadbed and the old roadbed is achieved.

The utility model discloses a kind of wire laying positioning control point fixed adjusting device, including the square main frame surrounded by four rectangular tubes, the upper side middle part of each rectangular tube is embedded with level bubble, the inside of main frame is vertically provided with guide plate, first strip guide groove is provided on guide plate along length direction, crossbar of cross is arranged in main frame, second strip guide groove is provided on crossbar along length direction, the both ends of crossbar are respectively fixed in the first strip guide groove of two sides by fastening bolt, control point bolt is fastened and arranged by passing through second strip guide groove at the cross point of two crossbars, the four corners of main frame are vertically provided with through-hole, screw rod is arranged in through-hole, the upper end of screw rod is fastened on main frame, the lower end of screw rod is threadedly connected sleeve, sleeve is embedded in stable stratum or structure body.The utility model is strong in stability, high in accuracy, wide in applicability, and convenient to operate and maintain.

The invention belongs to the technical field of electronic countermeasures, and particularly relates to a distributed jammer closed-loop coherent control method based on synthesis effect feedback, which comprises the following steps of: modeling signal coherent synthesis efficiency, acquiring coherent synthesis efficiency of a jammer A and a jammer B under different phase differences under an error-free condition, and calculating the coherent synthesis efficiency of the jammer A and the jammer B; establishing a phase difference-coherent combination efficiency mapping relation reference database; a-B jammer phase correction is carried out; and jammer A-C correction is carried out. According to the method, the robustness and the engineering practicability are remarkably improved; the cost, the power consumption and the complexity are effectively reduced; according to the invention, by taking a synthesis effect as a guide, the harsh requirement on the absolute space-time precision of a single node is relaxed, common commercial devices with lower cost and lower precision are allowed to be used for construction, and meanwhile, the complexity of initial calibration and setting is simplified, so that the hardware cost, power consumption and deployment and maintenance difficulty of the whole distributed mode are greatly reduced; and the dynamic self-correction and long-term stability capabilities are endowed.

This application provides a dual-frequency laser frequency difference adjustment system and method based on stress transfer. The system includes a dual-frequency laser and a detection component. The dual-frequency laser includes a housing, a magnetic strip, a first reflector, a second reflector, and a first deformation functional component. The first deformation functional component is connected between the first reflector and the housing and is configured to undergo at least plastic deformation when subjected to external force, and to transmit the stress generated by its deformation to the first reflector. The detection component includes a polarizer, a detector, and a processor. The detector receives the laser light emitted from the dual-frequency laser and passes through the polarizer, and converts the laser light into an electrical signal. The processor receives the electrical signal and generates frequency difference information of the two linearly polarized beams of the laser light. According to this application, damage to the dual-frequency laser can be reduced during frequency difference adjustment, and the frequency difference stability of the dual-frequency laser can be improved, as well as the ease of operation of frequency difference adjustment.

This invention belongs to the field of test probe fabrication technology, specifically a method for preparing a special coating for spring probes. The method includes: depositing a Si gradient transition layer on the surface of a spring substrate, followed by oxygen plasma activation treatment to form a specific active pinning layer of 3 to 5 nanometers; then depositing a DLC coating using a specific process, employing a specific peak voltage and a specific duty cycle pulse bias mode to pre-position dispersed carbon clusters. The SixOy pinning layer provides dual anchoring of chemical bonding and mechanical interlocking for the DLC coating during cyclic stress-induced graphitization transformation, preventing microcracks from propagating to the interface and ensuring the safe operation of the adaptive lubrication process. This invention overcomes the technical bottleneck of fatigue spalling of DLC coatings on elastic components, significantly improving the service life of spring probes.

The application discloses a multi-modal radio frequency authentication method based on a multi-scale signal representation, which comprises the following steps: firstly, pre-processing the original IQ signal of a target device received to obtain an instantaneous envelope signal; carrying out multi-scale decomposition and denoising processing on the instantaneous envelope signal to obtain a denoised envelope signal; constructing a multi-modal data set according to the original IQ signal and the denoised envelope signal; carrying out feature extraction and fusion on the multi-modal data set through a pre-trained target feature extraction network to obtain a fused feature representation; and carrying out classification on the fused feature representation through a pre-trained target classification network to output a classification result corresponding to the target device. The amplitude, frequency and time-frequency energy distribution information can be complementarily fused by constructing the multi-modal data set; the multi-modal features are extracted and fused through the target feature extraction network, so that the information loss is effectively avoided; and the target classification network is used for rapid classification, thereby reducing the calculation cost and ensuring the accuracy of identification.

This invention relates to the fields of nuclear detection electronics and radiation signal processing technology, specifically to an intelligent analysis system and method for nuclear radiation data. The system includes: acquiring a discrete voltage sequence output by the detector; marking pulse signals as clean pulses and calculating the real-time decay constant; calculating the net signal amplitude using a digital twin state-space recursive model; determining the real-time count rate based on the net signal amplitude and calculating the dynamic time window width based on the real-time count rate; discretely accumulating the net signal amplitude based on the dynamic time window width to generate a single-particle physical energy value; determining the measured peak position based on the single-particle physical energy value and generating a gain adjustment coefficient by combining the measured peak position with the real-time decay constant; and outputting a gain control signal based on the gain adjustment coefficient. This invention ensures precise synchronization between the subsequent calculation model and the current physical state of the detector, thereby significantly improving the physical authenticity and accuracy of energy spectrum analysis under varying temperature conditions.

The utility model relates to a factory building air conditioning technical field, specifically disclose a kind of air conditioning system pressure sensor quick connector, including the plug-in pipe for installing pressure sensor, with the coaxial communication of plug-in pipe and the sleeve of being wrapped in plug-in pipe outside, the sleeve of being wrapped in sleeve outside and for the fixing assembly of the sleeve and plug-in pipe fixed;The pressure sensor is located in sleeve, plug-in pipe and sleeve seal fit;Fixing assembly includes the locking mechanism of being wrapped in sleeve outside and with the rotation cooperation of sleeve, the locking mechanism of being wrapped in sleeve outside and passing through sleeve and with the plug-in fit of plug-in pipe outside, and the elastic abutment of being elastically connected with locking mechanism and located sleeve outside;The utility model can effectively realize the quick installation of pressure sensor disassembly, and need not tool auxiliary realization convenient disassembly, effectively solved the problem that traditional device disassembly is complicated, maintenance is difficult, improved maintenance efficiency, realized convenient operation, with good sealing performance.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The application discloses a kind of metalized carbon fiber heating wiring device, and application and wiring method, wiring device includes mounting disc and wire structure;Wire structure includes sleeve, support ring, two movable rings and two fixed rings;Support ring is sleeved in the middle of sleeve, two movable rings are symmetrically provided on the sleeve on the two sides of support ring, wire harness groove is respectively formed in the opposite side of the outer circumferential surface of two movable rings, two fixed rings are respectively sleeved in the two ends of sleeve, and elastic member is respectively arranged between two fixed rings and two movable rings, and the wire harness groove of two movable rings is adaptively clamped and guides the metalized carbon fiber wire harness passing through.The application has the advantages that the metalized carbon fiber wire harness can be adaptively clamped and guided, sliding friction is converted into rolling friction, wiring resistance is reduced, the insulation layer of metalized carbon fiber wire harness is protected, and the metalized carbon fiber wire harness after wiring is stable.

The application provides a coiled tube heat exchanger using spherical clamping strips to fix tube bundles, and belongs to the technical field of heat exchange equipment, and comprises a central cylinder and a plurality of clamping strips with spherical protrusions arranged on the outer wall of the central cylinder. The upper surface of the clamping strip is provided with a spherical protrusion structure, and adjacent spherical protrusions constitute a heat exchange tube positioning element. The spacing between the spherical structures is optimized to match the arrangement of the tube bundles, and the outer surface of the central cylinder is wound with heat exchange tubes. The clamping strip with the spherical protrusion adopts a reverse stamping process in the manufacturing process, so that the processing surface is located on the non-contact side of the heat exchange tube, effectively avoiding direct friction damage of the processing defects to the tube wall. The spherical streamline structure reduces the turbulence intensity when the shell side fluid flows around, effectively reduces the shell side pressure drop while ensuring the positioning accuracy of the heat exchange tube, and improves the heat transfer efficiency of the heat exchanger. The clamping strip with the spherical protrusion omits the independent welding area required by the traditional tube clamp, thereby reducing the material consumption of the clamping strip.

This invention discloses a highly dispersible graphene elastomer multifunctional masterbatch and its preparation method, belonging to the field of polymer composite materials technology. The masterbatch, based on a total mass of 100 parts, comprises 50-65 parts graphene, 25-40 parts elastomer carrier, 2-6 parts composite dispersant system, and 3-9 parts compatibilizer; the graphene sheet surface is modified with flexible molecular chains, with the modification amount being 2%-8% of the graphene mass. The preparation method employs a three-stage dispersion strategy: liquid-phase nano-dispersion, solid-phase shear dispersion, and interface stabilization. Nano-silica is added at the end to suppress sheet re-stacking during melt cooling. This invention achieves simultaneous improvement in strength and toughness under ultra-high filling conditions, is applicable to various thermoplastic elastomers, and has strong process versatility.

The invention discloses a dovetail groove type sliding table air cylinder intelligent control system for surge protector manufacturing, and belongs to the technical field of fluid pressure system control, and the dovetail groove type sliding table air cylinder intelligent control system comprises a data acquisition module, a state fusion module, a risk generation module, a mapping calculation module, a loading control calculation module and an execution feedback module. Risks are perceived through multi-source information fusion, closed-loop control is carried out by cooperatively driving pneumatic flexible damping and mechanical rigid preloading, and active prediction and stable intervention of falling risks can be realized while high response speed is guaranteed.

This invention discloses a magnetic connector portable hard drive with magnetic field guidance function, relating to the field of portable storage device technology. It includes a hard drive housing, a magnetic connector body movably disposed at the bottom of the hard drive housing, and further includes a pressing and pulling mechanism movably disposed on both sides inside the hard drive housing, a first self-locking mechanism disposed at the bottom of the pressing and pulling mechanism, and a second self-locking mechanism disposed on both sides of the magnetic connector body. Through the pressing and pulling mechanism and the linkage protection mechanism, the magnetic connector body can be automatically retracted into the hard drive housing when disconnection is required, achieving "non-destructive disconnection" of the interface. This avoids the need for users to shake the hard drive housing left and right to pull out the magnetic connector body due to friction between the magnetic force and the components, fundamentally avoiding damage to the port springs and solder joints by lateral forces, greatly improving the mechanical life of the interface, thereby ensuring long-term stability of data transmission and reducing the failure rate and maintenance costs of the device.

The application provides a kind of underwater concrete rapid repair material, by weight fraction, including the following components: cementing material system 67-80 parts, dual functional graphene system 0.6-1.2 parts, intelligent curing adjustment system 3-5 parts, auxiliary additive 2-3 parts, filler system 20-25 parts and water 18-25 parts;The dual functional graphene system includes hydrophilic amino graphene and hydrophobic sulfhydryl reduced graphene oxide, and the mass ratio of the two is (1.2-1.8):(0.8-1.2);The intelligent curing adjustment system includes microcapsule coated temperature-sensitive coagulant 2-3 parts and in-situ whisker generation precursor 1-2 parts.The application realizes underwater rapid curing, strong bonding, high toughness, long-term protection integration, and provides a high-performance solution for the rapid repair and emergency repair of hydraulic and marine infrastructure.

This utility model discloses a dual-mode hydrological radar measurement device based on closed-loop attitude adjustment, belonging to the field of hydrological monitoring technology. It includes a sealed electronic cabin and an attitude adjustment mechanism. A pitch angle adjustment component is located between a bottom fixed base and a rotating base, used to drive the bottom fixed base to pitch and swing horizontally. An azimuth angle adjustment component is connected between the rotating base and the top fixed base, used to drive the rotating base to rotate horizontally vertically. Through a periodic task scheduling mechanism and pre-emptive closed-loop attitude adjustment, it can automatically and cyclically switch between water level measurement mode and flow velocity measurement mode under unattended conditions. Before each measurement, the radar beam is precisely adjusted to the optimal incident angle of the corresponding mode. Simultaneously, the "attitude adjustment first, measurement later" execution logic ensures that each data acquisition is performed under optimal physical conditions, fundamentally improving the measurement accuracy of water level and flow velocity parameters and realizing fully automated continuous hydrological monitoring.

The utility model provides a kind of civil aircraft suitcase hinge, comprising: rocker arm and base, rocker arm below is provided with mounting hole and camshaft, base below is rotatably installed with threaded adjusting shaft, another end of threaded adjusting shaft is rotatably installed in the middle of camshaft, the middle part of base is fixedly installed by rocker arm pivot through mounting hole, rocker arm forms four-bar linkage by camshaft and connecting rod, limiting block is integrated in base, set the minimum opening angle of case door.The hinge system of the utility model is through the innovative "axial compression+radial decoupling" design concept, combined with modular adjustable structure, while ensuring high reliability, realizes the accurate control of case door movement and the convenience of installation and maintenance, breaks through the technical bottleneck that aviation level hinge high reliability and small size are difficult to be compatible, has been successfully applied to multiple civil aircraft luggage compartment system, and has the technical versatility of extending to spacecraft hatch mechanism.

The application belongs to the field of elastic elements for sensors, and particularly relates to a high-temperature-resistant pressure assembly and a high-temperature adjustment method thereof in a machining process, which comprises an outer shell, an elastic element assembly and an inflated rear seat assembly; the elastic element assembly is arranged in the outer shell and fixedly connected with the inflated rear seat assembly; the elastic element assembly comprises a spring (3) and a bellows (2); the spring (3) is arranged in the bellows (2) and the front and rear ends of the spring (3) are fixedly connected with a bellows front cover (1) and the inflated rear seat assembly respectively; the inflated rear seat assembly comprises a rear chamber (10) and an inflation tube (6); an inflation port of the inflation tube (6) is communicated with the rear chamber (10); an inner cavity of the bellows (2) is communicated with the rear chamber (10); a force transmission member (12) is arranged at the front part of the outer shell; a top rod of the force transmission member (12) is fixedly connected with the bellows front cover (1) perpendicularly through a pressurizing tube (9). The application has the characteristics of low stress, high stability and long-term use.

This utility model discloses a composite aluminum panel, including a wall. An aluminum panel body is provided on one side of the wall, and a groove is formed on one side surface of the aluminum panel body. A connecting plate is provided on one side of the aluminum panel body, and a reinforcing plate is fixedly installed on one side surface of the connecting plate. In this utility model, by pulling the connecting block on the limiting rod, it moves along the through groove of the connecting cylinder, causing the telescopic rod to move synchronously and compress the outer spring. When the end of the limiting rod disengages from the mounting base, the insert of the connecting plate can be inserted into the wall mounting base. After releasing the connecting block, the spring rebounds, pushing the limiting rod to automatically pass through the insert and engage with the limiting hole of the mounting base, completing a quick locking installation. For disassembly, pulling the connecting block causes the limiting rod to exit the limiting hole, separating the insert from the mounting base, achieving efficient disassembly. This structure utilizes the elastic restoring characteristics of the spring, simplifying the assembly and disassembly process and significantly improving the convenience of maintenance operations while ensuring connection reliability.

The utility model discloses a linear motor counterweight device which comprises a counterweight box, an adjusting device is installed on the counterweight box, the adjusting device comprises a fixed sleeve, a shifting sleeve, a moving rod, a moving sleeve, a moving groove, an inserting groove, an inserting rod, a connecting spring, a pressing plate, a moving block and a moving plate, the moving rod penetrates through the fixed sleeve in a sliding mode, the moving groove is formed in the fixed sleeve in an inclined mode, and the moving block is arranged in the moving sleeve. The inserting groove is formed in the moving block, the inserting rod is connected to one side of the pressing plate, the moving block is connected to one side of the moving plate, a locking mechanism is installed on the outer side of the fixing sleeve, and the locking mechanism comprises a transverse plate, an arc-shaped rod, an arc-shaped spring, a return block, a matching groove, an arc-shaped hole, the fixing block, a longitudinal plate and a matching plate. According to the utility model, not only can the thrust applied by the spring be flexibly adjusted according to linear motors of different models and working condition requirements, but also the long-term stability of parameters after adjustment can be ensured.

This application relates to the field of plastic recycling, specifically disclosing a rapid shaping equipment and process for recycling blow-molded products. The rapid shaping equipment includes a frame, a mold mechanism mounted on the frame for blow-molding products, a defect detection mechanism for detecting defects in the product, a crushing mechanism for crushing substandard products into particles, and a ring-shaped screening mechanism for screening the particles output from the crushing mechanism, allowing particles of the correct size to be discharged and returning oversized particles to the crushing mechanism for secondary crushing. This application improves the efficiency of defective product recycling.

This utility model discloses an influenza virus detection structure, including a shell, a sample pad, a conjugate pad, a nitrocellulose membrane, and gold-platinum nanoparticles. Nanoparticles are adsorbed onto the conjugate pad via electrostatic interaction. The gold-platinum nanoparticles are immobilized on the surface of the nanoparticles using a thiolized antibody. A pore size gradient transition layer is provided between the sample pad and the nitrocellulose membrane. The conjugate pad is surface-modified with low-density silane to encapsulate the gold-platinum nanoparticles. In this influenza virus detection structure, the gold-platinum nanoparticles are immobilized on the surface of the nanoparticles using a thiolized antibody. A hydrophobic band divides the conjugate pad into a fourth, third, second, and first conjugate pad. Different proportions of gold-platinum nanoparticles are set in the four regions to distinguish different influenza viruses. Furthermore, the gold-platinum nanoparticles provide high sensitivity, facilitating the detection of samples with low viral loads.

This utility model relates to a highly reliable anti-disengagement sealing structure for automotive wheel bearings, belonging to the field of automotive parts technology. It includes a wheel hub, with a drive shaft fitted inside the hub, and a wheel bearing positioned between the drive shaft and the hub. The wheel bearing includes an outer ring, within which are a pair of mirror-symmetrically distributed inner rings. Sealing ring assemblies are provided between the outer ring and the inner rings at both ends. The sealing ring assembly includes an outer skeleton fitted with the outer ring, an inner skeleton fitted with the inner ring between the outer skeleton and the inner ring, a sealing lip II that is fixedly connected to the outer skeleton at its front end, and a sealing lip I that is fixedly connected to the outer skeleton at its front end. This design features highly reliable sealing, an anti-disengagement design, extended service life, and improved driving safety. It significantly improves the reliability of the seal and the stability of the structure, effectively preventing the seal from disengaging, thereby extending the service life of the wheel bearing and ensuring driving safety.