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3513results about How to "Increase the length" patented technology
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Leg structure and humanoid robot
The invention relates to the technical field of robots, and discloses a leg structure and a humanoid robot. A motor template; the hip joint assembly is mounted on the thigh bracket and comprises a rotary mounting frame which is in assembly connection with the motor template; the first end of the hip linear actuator is rotationally connected with the thigh support, and the second end of the hip linear actuator is connected with the hip joint assembly; the shank support is connected with the lower portion of the thigh support through a knee joint assembly; the knee joint linear actuator is arranged on the thigh support, and the driving end is connected with the knee joint assembly; the foot support is connected with the lower portion of the shank support through an ankle joint assembly; the first end of the ankle linear actuator is rotationally connected with the shank support, and the second end of the ankle linear actuator is rotationally connected with the foot support. According to the humanoid robot, the corresponding linear actuators are arranged on the thigh support and the shank support, the space on the thigh support and the space on the shank support are fully utilized, the inertia of the leg structure is reduced, the response speed is high when the leg structure conducts corresponding actions, and the dynamic stability of the humanoid robot is improved.
Owner:GUANGZHOU PENGXING INTELLIGENT TECHNOLOGY CO LTD
Congested automatic warehouse multi-AGV path planning method based on conflict search algorithm
PendingCN119247962ARelieve stressavoid searchingVehicle position/course/altitude controlPosition/direction controlOperations researchIndustrial engineering
The invention discloses a crowded automatic warehouse multi-AGV path planning method based on a conflict search algorithm. The method comprises the following steps: constructing a grid map model of an environment where AGVs are located; at the bottom layer of the conflict search algorithm, AGV environment information is obtained according to the grid map model, and a path solution of the AGV and conflict information carried by the path are obtained by using an A * algorithm; according to the top layer of the conflict search algorithm, an improved constraint tree is constructed according to the obtained AGV path solution and conflict information, a node with the minimum loss is selected in the constraint tree for conflict detection, planning succeeds if no conflict exists, corresponding constraints are applied to conflicting AGVs if conflicts exist, and the whole process is circulated till planning succeeds. According to the method, the searching process of corridor conflicts is simplified, the driving direction allowed by the corridor is adaptively determined through searching, the planning process is accelerated by introducing the conflict priority and bypassing the conflicts, the planning time and the quality of a path solution can be considered as much as possible, and the working efficiency of the AGV is effectively improved.
Owner:CHONGQING UNIV
Method and equipment for preparing carbon nanotubes
PendingCN119284887AQuantitative control of entry quantityDiameter adjustableMaterial nanotechnologyCarbon nanotubesPtru catalystNanotube
The invention discloses a method and equipment for rapidly and continuously preparing carbon nano tubes with adjustable tube diameters, which are used for continuously and rapidly preparing carbon nano tubes with different tube diameters and at least comprise a catalyst precursor atomizing chamber, a plasma device, a carbon nano tube preparation reactor, a collector and a tail gas treatment device. A catalyst precursor solution enters the atomizing chamber through the injection pump to be atomized, atomized mist enters the plasma treatment device and then enters a reaction from a sample inlet in the upper portion of the reactor, after the reaction in the reactor is completed for a short time, the carbon nanotubes are collected from a collecting device on the lower portion of the reactor, and tail gas can be returned to the reactor after being filtered by the filter. The tail gas can be repeatedly used; and the continuous preparation of the carbon nano tubes with different tube diameters can be realized.
Owner:QINGDAO UNIV OF SCI & TECH
Chaotic block encryption method and system based on model random selection, and medium
ActiveCN119544184Afast encryptionincrease the lengthSecuring communication by chaotic signalsPictoral communicationKey spaceAlgorithm
The invention discloses a chaotic block encryption method and system based on model random selection, and a medium, belongs to the technical field of information security, and is used for solving the problems that an existing chaotic encryption algorithm is easy to crack and maliciously attack when being independently used, depends on internal characteristics of a nonlinear function, does not expand a secret key space, and cannot be used for encrypting a chaotic block. And the improvement of the security of the secret key is limited. The method comprises the following steps: constructing a chaotic system model library based on a preset chaotic system; the chaotic system model library comprises a plurality of chaotic subsystems; generating a secret key initial field for the original image based on binary coding; selecting a corresponding target chaotic subsystem in the chaotic system model library according to the key initial field; and encrypting the original image through the target chaos subsystem to obtain an encrypted image. The line-level image chaotic encryption algorithm is designed, and the image encryption speed is increased. And the length of the secret key is increased, the space of the secret key is expanded, and the safety of the secret key is improved.
Owner:INSPUR GENERSOFT CO LTD
Trowelling device for civil construction
ActiveCN222120976Uincrease the lengthexempt from replacementBuilding material handlingStructural engineeringMechanical engineering
Owner:贺利琴
Device and method for observing large deformation settlement in deep water area of dam
The invention belongs to the technical field of dam settlement observation, and particularly relates to a dam deepwater area large deformation settlement observation device and method.The dam deepwater area large deformation settlement observation device comprises a main rod, and a floating assembly is arranged on the outer ring of the main rod; the floating assembly comprises a main body assembly and an additional assembly; and the bottom sinking assembly comprises a machine body assembly and a fixing assembly, and a detection assembly is arranged at the top of the machine body assembly. The overall length of the device can be adjusted according to the depth of a water area, the machine body assembly can rapidly sink into the water bottom, the machine body assembly can be rapidly fixed after sinking into the water bottom, energy can be supplied to the machine body assembly through an energy supply part of the additionally-installed assembly, the current water level is detected in real time, the applicability is improved, and the practicability is high. The water pressure of the current position of the machine body assembly can be detected in real time, the current water depth is speculated according to the water pressure, the surface of the detection assembly can be cleaned, and it is prevented that sludge accumulation affects normal use of the device.
Owner:SICHUAN HUADIANXIXIHE HYDROPOWER DEV CO LTD
Heat purification all-in-one machine
ActiveCN222165174Ureduce wasteImprove water production capacityFluid heatersMechanical apparatusWater storageWater production
The utility model discloses a purifying and heating all-in-one machine which is provided with a raw water inlet and comprises a filtering unit with a filter element; the heating device comprises a heating cavity and a heating body, a water inlet of the heating cavity is communicated with the pure water outlet of the filtering unit, and the heating cavity is provided with a reflux inlet for discharging hot water to the filtering unit; the cooling device comprises a water storage cavity, and the raw water inlet is communicated with the filtering unit through the water storage cavity; one end of the backflow pipeline is communicated with the backflow opening, the other end of the backflow pipeline is communicated with a fluid path between the water storage cavity and the filtering unit, and at least partial area of the backflow pipeline is arranged in the water storage cavity in a penetrating mode. According to the heat purifying and purifying all-in-one machine, hot water which is not taken for a long time and needs to be emptied can flow back to the filtering unit to be filtered and reused, water resources can be saved, water flow waste is reduced, the emptied hot water participates in heat exchange, heat damage to the filtering unit due to the fact that the water temperature is too high is avoided, and the service life of the filtering unit is prolonged. And the water production capacity and the anti-freezing performance of the filtering unit can be improved.
Owner:JOYOUNG CO LTD
Liquid-cooled bus and power equipment
The embodiment of the utility model relates to the technical field of energy storage equipment, and provides a liquid-cooled bus and power equipment, the liquid-cooled bus comprises a first busbar and a second busbar, at least part of the first busbar is used for being installed in a cabinet body of the power equipment, and the second busbar is used for being installed in the cabinet body of the power equipment. The second busbars and the first busbars are arranged along the extension direction of the liquid-cooled bus, and the first busbars corresponding to the adjacent cabinet bodies are detachably connected through the second busbars. The first busbar and the second busbar extend along a first direction, and the larger surfaces of the first busbar and the second busbar are vertically arranged; the first busbar and / or the second busbar are / is internally provided with a cavity, and the cavity is used for containing a cooling medium. According to the invention, the first busbar and / or the second busbar are / is cooled in a heat transfer manner, so that the normal operation of the power equipment is ensured.
Owner:SYL (NINGBO) BATTERY CO LTD
Pole structure, top cover assembly, battery monomer, battery and power utilization device
ActiveCN222395011Uincrease the lengthprevent flowCell lids/coversElectric connector introductionElectrical batteryElectrical devices
The utility model relates to a pole structure, a top cover assembly, a battery monomer, a battery and a power utilization device, and relates to the technical field of batteries, the pole structure comprises a mounting carrier, a pole, a fixing ring and a sealing member, the mounting carrier is provided with a mounting hole, and the mounting carrier comprises a first abutting wall; the pole comprises a first metal layer and a second metal layer which are stacked, and the first metal layer at least comprises a first step surface; the fixing ring sleeves the peripheral wall of the second metal layer and comprises a first end wall; the sealing element sleeves the peripheral wall of the first metal layer; the sealing piece comprises a first sealing wall and a second sealing wall which are oppositely arranged, the first sealing wall abuts against the first abutting wall, and the second sealing wall abuts against the first step face and the first end wall. According to the pole structure, the top cover assembly, the battery monomer, the battery and the electric device, under the condition of ensuring good sealing performance, the material consumption of the composite metal body is reduced, and the production cost is effectively reduced.
Owner:JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
Stretching detection device for cable production
ActiveCN119394781Aavoid slidingincrease the lengthPreparing sample for investigationMaterial strength using tensile/compressive forcesElectric machineryStructural engineering
The invention relates to the field of cables, and discloses a cable production stretching detection device which comprises a main body unit, the main body unit comprises a processing table, the top surface of the processing table is provided with a limiting assembly, a cleaning box, a detection box and a storage box, the storage box is located at the left side of the top surface of the processing table, and the detection box is located at the right side of the storage box; the cleaning box and the detection box are located between the two limiting assemblies, the machining table is located on the right side of the storage box, a detection unit is arranged on the inner side face of the machining table and comprises a motor arranged on the inner side face of the machining table, and a rotating shaft is arranged at the output end of the motor. The cable detection device has the beneficial effects that tensile detection can be quickly performed on a cable passing through the inner side surface of the detection box through mutual cooperation of composition structures of the detection assemblies, and the cable passing through the inner side of the detection box can be detected in an omnibearing manner through intermittent detection of the detection assemblies, so that the length of the detected cable is increased, and the detection efficiency is improved. Therefore, the safety of the cable is ensured.
Owner:DONGGUAN SUNTRACK WIRE
Flexible ureteroscope used in cooperation with diameter-variable scope sheath
The invention relates to the technical field of medical instruments, in particular to a flexible ureteroscope used in cooperation with a diameter-variable ureteroscope sheath, which comprises a ureteroscope sheath body and a flexible ureteroscope body, the ureteroscope sheath body comprises a deformation section and a support section, the deformation section has a first form and a second form, and the flexible ureteroscope body comprises a handle section and a ureteroscope tube section. The endoscope tube section comprises a first tube body part and a second tube body part, a fixing groove is formed in the first tube body part, and the outer diameter of the deformation section in the first form is smaller than or equal to the outer diameter of the first tube body part; the inner diameter of the deformation section in the second form is greater than the outer diameter of the first pipe body part; a first liquid injection channel is further arranged in the endoscope tube section, and a first liquid outlet hole is formed in the fixing groove. Compared with the prior art, in the operation of expanding the human body ureterostenosis section by the deformation section, a stenosis ring in the human body ureterostenosis section does not need to be broken by supporting, so that the injury to the human body ureter in the ureteroscope lithotripsy is effectively reduced, and the postoperative pain of a patient is reduced.
Owner:SICHUAN ACADEMY OF MEDICAL SCI SICHUAN PROVINCIAL PEOPLES HOSPITAL
Chaotic encryption and decryption method and system based on random weight
ActiveCN119544185Aincrease the lengthensure safetySecuring communication by chaotic signalsPictoral communicationKey spaceAlgorithm
The invention discloses a chaos encryption and decryption method and system based on random weight, belongs to the technical field of information security, and is used for solving the technical problems that an existing chaos encryption and decryption algorithm seriously depends on internal characteristics of a nonlinear function, does not expand a secret key space, is limited in improvement of secret key security and is easy to crack. The method comprises the following steps: in an encryption stage, injecting an original image into different subsystems of a Lorentz chaotic system to obtain a plurality of initial ciphertexts; performing linear combination on the plurality of initial ciphertexts through random weights to obtain ciphertext data of the original image; in a decryption stage, generating a weight matrix and an auxiliary ciphertext based on the number of the subsystems; and based on the weight matrix and the auxiliary ciphertext, decrypting the encrypted image to obtain the original image. According to the design method, the weight is added into the initial value key of the original scheme, so that the key length is increased, and the security is ensured.
Owner:INSPUR GENERSOFT CO LTD
OsPIGL gene and method for regulating and controlling grain length, thousand grain weight and drought tolerance of rice by using OsPIGL gene
PendingCN119120524AAbundant resourcesEffectively control grain lengthBacteriaHydrolasesBiotechnologyGrain weight
The invention belongs to the field of plant genetic engineering, and particularly relates to an OsPIGL gene and a regulation and control method thereof for improving the grain length, thousand grain weight and drought tolerance of rice. The nucleotide sequence of the OsPIGL gene is as shown in SEQ ID NO: 1, and the CDS sequence is as shown in SEQ ID NO: 2; the specific application is that overexpression of the OsPIGL gene effectively improves the grain length, the thousand seed weight and the drought tolerance of the rice, and new gene resources and technical means are provided for rice breeding. The gene and the application of the gene provided by the invention are helpful for cultivating a new rice variety with excellent agronomic traits and stress resistance and improving the yield and quality of rice, and have important significance for guaranteeing grain safety.
Owner:CHONGQING UNIV
Horizontal winding machine
ActiveCN119419061AGuaranteed uniformityincrease the lengthCoils manufactureWinding machineWire cutting
The invention discloses a horizontal winding machine which comprises a machine table, two magnetic core rotating mechanisms, a wire hooking mechanism, a winding mechanism, a magnetic core feeding mechanism, a discharging frame assembly, a product conveying mechanism, a wire conveying mechanism, a wire grabbing mechanism and a wire cutting mechanism. The positions of magnetic cores can be rotated through the magnetic core rotating mechanisms, the uniformity of winding every time is guaranteed, station conversion of the magnetic cores among the magnetic core feeding mechanism, the two magnetic core rotating mechanisms and the discharging frame assembly can be achieved through the product conveying mechanism, and enameled wires can be provided through the wire conveying mechanism, the wire cutting mechanism and the wire grabbing mechanism. According to the horizontal winding machine, due to the fact that the horizontally-arranged wire hooking mechanism is adopted, when a long enameled wire is wound, only the length of the wire hooking mechanism needs to be increased, the height of the machine table does not need to be increased, and operation of workers is facilitated.
Owner:ZHAOQING CHENGEN ELECTROMECHANICAL EQUIP CO LTD
Magnesium ingot pushing device for cutting machine
ActiveCN119658443AGuaranteed stabilityincrease the lengthProcess efficiency improvementPositioning apparatusIngotMachine
The invention provides a magnesium ingot pushing device for a cutting machine, which belongs to the technical field of pushing and comprises a supporting seat, an inclined plate, a clamping plate and an adjusting mechanism, the supporting seat is connected to the telescopic end of the second linear driver, the inclined plate is installed on the supporting seat, the clamping plates are hinged to the front side and the rear side of the supporting seat respectively, and the adjusting mechanism is used for driving the clamping plates to rotate oppositely; the adjusting mechanism comprises a telescopic push rod, the telescopic end of the telescopic push rod is connected with a horizontally-arranged half-frame-shaped supporting frame, a first connecting rod is arranged between each end of the supporting frame and the clamping plate, and the two ends of each first connecting rod are hinged to the end of the supporting frame and the middle position of the clamping plate respectively. A magnesium ingot can be clamped and positioned through the inclined plate and the clamping plate, on one hand, the stability of the magnesium ingot during cutting is guaranteed, on the other hand, the plane part and the inclined plane of the left end part of the magnesium ingot can be continuously cut, the cut length of the magnesium ingot is increased, and the utilization rate of the magnesium ingot is increased.
Owner:SHANXI FUHENGDI NEW MATERIALS CO LTD
Relay
PendingCN119092360AAvoid magnetic circuit effectsreduce complexityElectromagnetic relay detailsMechanical engineeringRelay
The relay comprises a containing piece, a magnetic circuit part, a contact part and an auxiliary monitoring switch, the containing piece comprises a base and a shell, an opening is formed in one end, in the Z-axis direction, of the base and is provided with a first side wall, and a first through groove, a second through groove and a third through groove are sequentially formed in the first side wall in the X-axis direction; the second through groove and the third through groove are opened in the end face of the open end of the base. The shell covers the opening of the base; each signal terminal of the coil winding extends out of the third through groove along the Y-axis direction; each connecting terminal of the contact part extends out of the first through groove along the Y-axis direction; the auxiliary monitoring switch is arranged between the armature assembly and the first side wall in the Y-axis direction and close to the yoke in the X-axis direction, the auxiliary monitoring switch is suitable for being driven by the armature assembly to be switched on and off, and a leading-out terminal of the auxiliary monitoring switch extends out of the second penetrating groove in the Y-axis direction. The accommodating part is small in forming difficulty, and the size of the relay is small.
Owner:XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD
Aluminum-based heat dissipation plate for energy storage battery and preparation process of aluminum-based heat dissipation plate
ActiveCN119216196AIncrease the heat exchange areaImprove heat radiation abilityPretreated surfacesSecondary cellsEpoxyThermal dilatation
The invention relates to the technical field of heat dissipation plates, in particular to an aluminum-based heat dissipation plate for an energy storage battery and a preparation technology thereof.In order to improve the heat dissipation performance of the aluminum heat dissipation plate, the surface of the aluminum heat dissipation plate is coated with an epoxy resin coating with an epoxy modified graphene material; according to the preparation method, silicon-oxygen bonds and polyethylene glycol groups are introduced to the surface of graphene, so that the molecular flexibility of a grafted chain segment on the surface of the graphene is improved, and the phenomenon of coating falling caused by mismatching of thermal expansion volumes of an epoxy resin coating and an aluminum substrate is avoided; epoxy modified graphene and epoxy resin are mixed and then co-cured and cross-linked to prepare the heat dissipation coating, in the process, epoxy groups on the surface of the graphene and the epoxy resin jointly participate in cross-linking of a curing agent, so that a cross-linked network is formed, the bonding performance between the graphene and the coating is greatly improved, and the durability of the coating is effectively improved.
Owner:DONGGUAN ZWAYN NEW ENERGY CO LTD
Silicon-based hybrid integrated external cavity narrow linewidth laser
InactiveCN119419589Aextend your lifeincrease the lengthLaser optical resonator constructionLaser technologyGrating
The invention relates to a semiconductor laser, in particular to a silicon-based hybrid integrated external cavity narrow-linewidth laser, which is used for solving the problems of poor integration, insufficient stability, high cost and the like in the existing narrow-linewidth laser technology. The silicon-based hybrid integrated external cavity narrow linewidth laser comprises a semiconductor gain chip, a silicon-based grating and a conical optical fiber. Wherein the semiconductor gain chip is coupled with the incident end face of the grating outer cavity, and the emergent end face of the grating outer cavity is directly coupled with the tapered fiber. By utilizing the grating outer cavity, the photon service life is prolonged, the output line width is narrowed, and the device has the advantages of being narrow in output line width, high in output power, high in process stability, small in size, integrated and the like.
Owner:XIAN INST OF OPTICS & PRECISION MECHANICS CHINESE ACAD OF SCI
High-speed centrifugal forming machine for producing long-pipe-joint large-pipe pile
PendingCN119099027AImprove molding qualityincrease the lengthCeramic shaping apparatusMolding machineClassical mechanics
The high-speed centrifugal forming machine comprises a machine base and a pipe die, a movable feeding mechanism for feeding materials into the pipe die is arranged at one end of the pipe die, and a rolling compression roller mechanism for compressing cement materials is arranged in the pipe die. The machine base is provided with a vibration excitation mechanism which is matched with the rolling compression roller mechanism to tamp cement materials. The rolling compression roller mechanism comprises a compression roller body, a driving end stand column mechanism arranged at one end of the compression roller body and a driven end stand column mechanism arranged at the other end of the compression roller body. The shock excitation mechanism comprises a shock excitation base and a shock excitation beam, the two ends of the shock excitation beam are installed on the shock excitation base through elastic mechanisms, and a roller set used for supporting the pipe die is installed on the shock excitation beam. According to the machine, the rolling compression roller mechanism and the excitation mechanism are arranged, cement raw materials are centrifuged, rolled and excited in corresponding cement pipe molds to manufacture cement pipe piles, the whole machine is convenient to arrange, capital construction investment is saved, energy consumption is low, noise is low, operation is easy, and the intelligent integration degree is high.
Owner:CCCC THIRD HARBOR ENGINEERING CO LTD
Circuit device and method for power supply and distribution
ActiveCN119543033ARealize automatic adjustmentachieve protectionSuspension arrangements for electric cablesSpatial arrangements/dispositions of cablesHemt circuitsControl theory
The invention relates to the technical field of power supply and distribution circuit devices, in particular to a power supply and distribution circuit device and a method thereof.The power supply and distribution circuit device comprises a transverse frame, a safety release mechanism and an adjusting mechanism, the bottom end of the transverse frame is fixedly connected with two sets of installation fixing rods, and a first supporting rod is arranged at the bottom end of the transverse frame; the two ends of the compensation body are fixedly connected with guide side plates, the two ends of the transverse frame are connected with side limiting plates through rotating shafts, pressure sensors are arranged at the top ends of the sides, close to the compensation body, of the side limiting plates, and power grooves are formed in the two ends of the transverse frame. The device can avoid chain collapse accidents caused by insufficient length of the electric wire during collapse accidents, and meanwhile, the device can protect the line to the greatest extent, so that the situation that the electric wire is damaged due to external force in the line repair process is avoided, the repair work of a user is reduced, the normal proceeding of the line repair work is ensured, and the production efficiency is improved. Line power supply time is shortened, and loss is further reduced.
Owner:CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES +2
Water-jet guided laser coupling device
ActiveCN222552442UImprove machining accuracyImprove processing efficiencyLaser beam welding apparatusHigh pressure waterMechanical engineering
The utility model relates to a water-guided laser coupling device which comprises a laser source (1) and a coupling cavity (2), the laser source (1) is configured to generate laser (10) extending along a preset direction (x), and the coupling cavity (2) comprises an optical window mirror (21) arranged on a propagation path of the laser (10) for the laser (10) to pass through; the high-pressure water cavity (22) is formed in the side, away from the laser source (1), of the optical window mirror (21) in the preset direction (x), and the high-pressure water cavity (22) is configured to form a water jet (220) extending in the preset direction (x); the shielding gas generating mechanism (23) is arranged on the side, away from the laser source (1), of the high-pressure water cavity (22) in the preset direction (x) and is configured to generate layered spiral gas flow (230), the layered spiral gas flow (230) comprises first spiral gas flow (231) and second spiral gas flow (232), and the first spiral gas flow (231) is located on the radial inner side of the second spiral gas flow (232).
Owner:AECC COMML AIRCRAFT ENGINE CO LTD
Waste gas treatment device for cold header
PendingCN119456623Aadjustable lengthincrease the lengthDirt cleaningForging/hammering/pressing machinesProcess engineeringScrew thread
The invention belongs to the technical field of waste gas treatment of cold headers, and discloses a waste gas treatment device for a cold header, which comprises a cold header body and is characterized in that a waste gas purification assembly is arranged on one side of the cold header body, and the top end of the waste gas purification assembly is fixedly connected with a ventilation pipeline. Through cooperation of a baffle, a rotating shaft, a second connecting rod, a threaded rod and other structures, the length of the gas collecting hood is conveniently adjusted, then the waste gas collecting efficiency under different working conditions is improved, a cross-shaped groove is formed in the threaded rod, and therefore when the threaded rod rotates, the rotating shaft and the first connecting rod outside the rotating shaft can be driven to rotate through the cross-shaped groove; after the rotating shaft rotates, the two baffles can be driven by the first connecting rod to move oppositely, so that the overall length of the gas collecting hood is expanded after the baffles move, the waste gas collecting area and capacity are increased, and the waste gas collecting efficiency under different working conditions is improved.
Owner:WENZHOU BOYU MASCH CO LTD
Energy-saving bridge crane and using method thereof
PendingCN119612370Areduce shakingReduce security risksTravelling cranesTrolleysArchitectural engineeringOverhead crane
The invention belongs to the technical field of cranes, and discloses an energy-saving bridge crane and a using method thereof.The energy-saving bridge crane comprises two longitudinal bridge guide rails, a transverse bridge guide rail is movably installed at the position between the top ends of the two longitudinal bridge guide rails, and a lifting frame is movably installed at the bottom end of the transverse bridge guide rail; hoisting cables are installed at the positions, close to the four corners, of the bottom end of the hoisting frame, the hoisting cables are connected with an external cable crane, and a telescopic rod is fixedly installed in the middle of the bottom end of the hoisting frame. Through rotation of the lead screw and the cooperation effect between the movable base and the adjusting assemblies and between the movable base and the stabilizing assemblies, after the device completes hoisting of goods, the multiple stabilizing assemblies can be automatically close to one another by operating the lead screw, so that after the goods are hoisted again, the side edges of the goods can make contact with the multiple stabilizing assemblies, and the stability of the goods is improved. And through the limiting effect of the stabilizing assembly, shaking of goods during hoisting is reduced, potential safety hazards are reduced, and safety accidents are avoided.
Owner:JINOU CRANE CO LTD
Character string data read optimization method based on B + tree and learning index
PendingCN119597976AImprove access speedReduce computational overheadOther databases indexingOther databases queryingTheoretical computer scienceEngineering
The invention discloses a character string data read optimization method based on a B + tree and a learning index. A learning index generated based on a machine learning (ML) model focuses on integer data of a fixed size, but is lack of consideration for character strings of variable lengths and is poor in performance in character string data. In order to solve the problem, the invention provides a character string slicing method which can convert a character string with a variable length into an integer with a fixed size for prediction and extract a common prefix from a character string key to reduce a model fitting error. According to the method, the characteristics of character string data are fully considered, complex multi-dimensional linear regression is simplified into one-dimensional linear regression, and the model calculation overhead is reduced. Besides, the invention provides a self-adaptive strategy to select a proper index to manage the calculation cost, the method for dynamically selecting the index nodes can utilize the advantages of the two index types to the maximum extent, and the calculation overhead is effectively reduced while the index efficiency is ensured.
Owner:HOHAI UNIV
Large bulb tubular pump device capable of inhibiting tail vortex structure
ActiveCN119084314Ano localized eddy currentseffective support structureSpecific fluid pumpsPump componentsWater flowMechanical engineering
The invention provides a large bulb tubular pump device capable of inhibiting a tail vortex structure, which comprises a bulb body positioned in a bulb body runner and a flow guide pier positioned in a water outlet runner, the flow guide pier is positioned behind the bulb body, one end of the flow guide pier extends to the outline of the tail of the bulb body, and the other end of the flow guide pier extends to the tail of the bulb body. The flow loss between the flow guide pier and the tail of the bulb body is reduced. The extension line of the outline of the tail of the bulb body is tangent to the thickness of the flow guide pier and used for restraining generation of tail vortexes. The tail portion of the bulb body is fused with the flow guide pier, an effective supporting structure is provided for the lengthened bulb body, the mechanical strength and stability of the whole device are enhanced, the reasonable design of the flow guide pier ensures that no obvious local flow loss is generated when fluid passes through the area, and the flow guide pier is more stable. Meanwhile, the durability of the equipment is improved.
Owner:JIANGSU UNIV
Display panel and display device
The embodiment of the invention provides a display panel and a display device. The display panel comprises a display area and a first non-display area located on one side of the display area in the first direction, and the first non-display area comprises a substrate and a first power source structure; the first power supply structure comprises a first branch part and a second branch part, the first branch part and the second branch part are in different layers and are electrically connected, and the second branch part comprises a first sub-part and a second sub-part which are electrically connected with each other; the first sub-part and the first branch part are overlapped in the direction perpendicular to the plane where the substrate is located; in the first direction, the second sub-part is located on the side, away from the display area, of the first sub-part, the length of the second sub-part in the second direction is larger than that of the first sub-part in the second direction, and the second direction intersects with the first direction. The impedance of the first power supply structure can be reduced, and the brightness uniformity of the display area is improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Novel ultrasonic descaling device and pipeline combined structure
PendingCN119259593Aincrease the lengthSolve the problem of combining dropHollow article cleaningUltrasonic guided waveBody waves
The invention relates to a novel ultrasonic descaling device and pipeline combination structure, and provides a novel ultrasonic transducer array design and a pipeline combination mode. Four ultrasonic transducers and a trapezoidal module with an inclined angle are combined, and the trapezoidal module and the pipeline are combined in a curvature mode. The trapezoidal module and the ultrasonic transducer are linked through spiral occlusion, so that the problems that the ultrasonic transducer is lost due to welding combination of the ultrasonic transducer and the pipeline, the ultrasonic transducer falls off after working and the like can be avoided, and later maintenance and replacement are facilitated. The trapezoidal module can provide a certain inclination angle, so that ultrasonic body waves emitted by the ultrasonic transducer are converted into ultrasonic guided waves, and the pipeline cleaning length of the ultrasonic descaling device is increased.
Owner:HARBIN UNIV OF SCI & TECH
A GIS sealing ring and sealing structure for nuclear power plant
The present invention discloses a GIS sealing ring for nuclear power plants and its sealing structure, which belongs to the technical field of sealing rings, and comprises a soft ring body, a pressure-bearing external support structure is arranged in the soft ring body, an external support sealing structure is arranged on the inner edge and the outer edge of the soft ring body, and a joint surface cover structure is arranged on the upper and lower surfaces of the soft ring body. An abutment ring groove for plugging and matching with an abutment ring is arranged in the middle side of the tight pressure groove, and a second abutment ring is arranged in the tight pressure groove and located on both sides of the abutment ring groove; a limit ring is arranged on the outer side of the tight pressure groove, and the limit ring is inserted between the abutment ring and the base ring; a sealing groove is arranged in the tight pressure groove and located on the side of the limit ring, and the sealing ring is inserted into the sealing groove. Since the external support sealing structure and the inside of the soft ring body both use negative Poisson's ratio ring sheets as internal supports, after the nuts on the sealing structure are locked and the mounting bolts are installed, not only can the installation sealing characteristics be maintained, but also the matching strength of each combined section is increased under the pressure of the insulating gas in the trachea.
Owner:SICHUAN JUST RUBBER
Automobile
ActiveCN222136863UImprove safety and reliabilityIncrease the power transmission pathSuperstructure subunitsRolloverLap joint
The utility model provides an automobile. The automobile comprises side coamings and a top cover beam, the side coamings comprise the first side coaming and the second side coaming, the first side coaming and the second side coaming are located on the two sides of the automobile correspondingly, the top cover beam is used for connecting the first side coaming and the second side coaming, the top cover beam comprises a beam assembly, and the beam assembly comprises a beam reinforcing plate. The beam reinforcing plate comprises a first side and a second side which are opposite, the first side is in lap joint with the first side surrounding plate, and the second side is in lap joint with the second side surrounding plate. The length of the cross beam reinforcing plate is increased, so that the cross beam reinforcing plate, the first side coaming and the second side coaming have a certain overlapping length, the connecting part of the top cover cross beam and the side coaming is firmer and more stable, the force transmission path from the side coaming to the top cover cross beam is reinforced, the bending resistance of the overlapping part is improved, and the service life of the top cover cross beam is prolonged. And the safety and the reliability of the automobile during collision or rollover are also improved.
Owner:BYD CO LTD
Combinable folding core box
InactiveCN222539299UEasy to storeIntegrity guaranteedLidsVariable capacity containersStructural engineeringMechanical engineering
The utility model provides a combinable folding core box which comprises a core box body provided with at least one partition plate, two ends of the core box body are connected with a rectangular frame and at least two rotating plates, a rotating assembly is arranged above the core box body, a rotating shaft is connected with the rotating assembly, and an installation groove is formed in the upper surface of the core box body. The rotating assembly is connected with the rectangular frame, and the rectangular frame slides on the core box body to achieve rotation of the rotating plate; two different core boxes are connected together in an end-to-end mode, the length of the space for storing the core is increased, the large-size core can be stored, the integrity of the core is guaranteed, when the core is stored, a rectangular frame is moved outwards, the two core boxes are connected end to end, and a rotating plate is opened, so that a storage cavity between the two core boxes is communicated, and the core is stored in the storage cavity. Therefore, the two core boxes are connected together, large-size cores can be stored, and the cores can be stored more conveniently.
Owner:CHONGQING GEOLOGY ENG RECONNAISSANCE INST