88 results about "Double chain" patented technology

A method for determining characteristics of a first chain and a second chain of a matched pair of parallel chains of a twin-chain conveyor includes driving the chains at a predetermined speed and determining a first time interval between first and second pins of the first chain passing a first sensor and a second time interval between first and second pins of the second chain passing a second sensor both when the conveyor is loaded (a loaded time interval) and unloaded (an unloaded time interval). Also determining a difference between the respective loaded time intervals and the unloaded time intervals as a degree of elongation of each chain and a difference between the loaded time interval of the first chain and a loaded time interval of the second chain as a differential elongation of the conveyor.

The application claims a kind of anonymous fast identity authentication method for Internet of Vehicles based on double-chain architecture and national secret algorithm, comprising: constructing double-chain system, building system operation framework, including cloud chain, dynamic chain and in-vehicle TEE trusted environment;Initialization system, initialize system parameters, including cryptography curve selection, etc.;Real-name registration, vehicle submits its real identity information to cloud chain for registration, and obtains exclusive digital certificate after success;Pseudonym generation and registration of vehicle, vehicle first generates pseudonym Token locally, then calls the certificate and Token as parameters to call the evidence chain smart contract for anonymous identity registration;Anonymous fast authentication between vehicles, based on dynamic chain between vehicles, anonymous fast authentication between vehicles is realized through pseudonym Token and DH secret key negotiation algorithm.The application is based on double-chain architecture and national secret algorithm, and the evidence chain constructs vehicle node real information network, responsible for the real information trace of malicious node;Dynamic chain provides efficient two-way authentication protocol support between vehicles.

The invention provides a data processing method and system based on a double-chain block chain, electronic equipment and a medium, and relates to the technical field of block chains. According to the specific implementation scheme, in response to a received first transaction request sent by a transaction information chain, transaction key information carried in the first transaction request is obtained; generating an enterprise information request based on the transaction key information, and sending the enterprise information request to an enterprise information chain; and obtaining transaction enterprise information fed back by the enterprise information chain based on the enterprise information request, and generating a transaction verification result of the first transaction request based on the transaction enterprise information. According to the technical scheme of the application, sensitive information of an enterprise is separated from transaction data by adopting a double-chain block chain architecture, and a data association and verification mechanism between double chains is designed, so that any node on the block chain can complete verification of transaction authenticity without knowing the sensitive information of each party participating in the transaction; and the data security and credibility of the supply chain financial system are improved.

The application discloses a kind of double-chain ring power distribution network carrying capacity analysis method, device and electronic equipment, it is related to power distribution network technical field, wherein, method includes: obtaining the distributed photovoltaic power data, the distributed wind power data, the operating state of independent energy storage and the load of distribution network load corresponding to double-chain ring power distribution network;Distributed photovoltaic power data, distributed wind power data, the operating state of independent energy storage and load are respectively extracted features, and a variety of feature data are obtained;Multiple feature data are input into neural network model, and the carrying capacity of double-chain ring power distribution network is calculated based on neural network model.Such, under the premise of ensuring the safety and reliability of power distribution network, the access of distributed new energy, energy storage, load is optimized, and the multi-element interaction ability of source, network, load and storage is improved.

The utility model discloses a double chain disc transmission relates to bicycle technical field, including the speed regulator of being located on handle and the speed change piece on the vehicle body, and the speed regulator is connected with the speed change piece through the speed change line, including double chain disc transmission, and the double chain disc transmission includes the gear change disc, low speed chain disc, high speed chain disc and crank that combine in proper order, and low speed chain disc is fixedly connected with the crank, and high speed chain disc is connected with the crank through the bearing, and low speed chain disc and high speed chain disc are separately connected with the chain respectively, and the linkage mechanism is equipped on the crank, and the control of high speed chain disc is carried out through the interaction between the gear change mechanism on the gear change disc and the linkage mechanism on the crank. The utility model discloses through low speed chain disc, high speed chain disc connects and drives respective chain respectively, and the gear change disc is used to control the switching of gear, and the gear change is stable and easy 360 degrees dead angle free, will not stir the chain separation of chain, and all internal parts are realized through mechanical structure, and do not involve any electronic device, and the production manufacturing cost is low.

The present invention relates to pairing of two chains of a multispecific construct and uses thereof.

A sequence for forming an editing substrate together with a target RNA editing site. The sequence and the upstream and downstream portions of the target RNA editing site form a specific double-chain secondary structure, so that efficient editing of the target RNA editing site is realized.

The invention discloses a time-to-digital converter based on a vernier double-chain structure, and relates to the technical field of integrated circuits. The converter comprises a signal holding circuit, a vernier double-chain rough measurement module, a data selector, a special time amplifier module and a digital coding unit, the vernier double-chain rough measurement module is composed of a main delay chain and a vernier delay chain, and 10ps-level rough measurement is achieved by adjusting the width-to-length ratio of an MOS tube of a phase inverter to control the delay difference of a unit. The data selector gates a residual time difference signal to the special time amplifier module, and the special time amplifier module is matched with a transmission gate through an RC network to realize 11mV / ps high-linearity time-voltage conversion; the digital coding unit integrates the rough measurement result and the accurate measurement result, and finally the 3.0 ps system resolution is achieved. A'rough measurement-fine measurement 'two-stage measurement architecture is adopted, a single-amplifier time division multiplexing design is adopted, a measurement dead zone is effectively eliminated, the chip area and power consumption are greatly reduced, and the device is particularly suitable for high-precision time measurement application such as laser radar and quantum calculation.

The invention relates to the technical field of hydraulic lifting equipment, in particular to a precise double-chain hydraulic floor lifting machine which comprises a rack, a carrier, a double-chain transmission mechanism, a hydraulic driving mechanism and a connection guide mechanism, the rack comprises an outer frame, an inner frame, a top frame and a bottom frame, and the top frame and the bottom frame are welded to the tops and the bottoms of the outer frame and the inner frame respectively; the double-chain transmission mechanism comprises a lifting rod arranged between the top frame and the bottom frame in a sliding mode and chain wheels rotationally arranged at the two ends of the lifting rod through bearings, chains meshed with the chain wheels are arranged on the surfaces of the chain wheels, and the hydraulic driving mechanism comprises two mounting plates symmetrically and fixedly arranged on the inner wall of the outer frame. By arranging the double-chain transmission mechanism and the hydraulic driving mechanism, the lifting machine adopts double-chain synchronous transmission and hydraulic closed-loop control, so that the lifting machine has high precision and high stability, and the problems of inclination and inaccurate positioning of traditional equipment are solved.

A multi-direction horizontal pushing chain transmission device relates to the technical field of linear transmission devices, and comprises a guide rail mechanism and an interlocking pushing chain. The interlocking pushing chain is a double-chain structure composed of two single chains in meshing interlock. The double chain has rigidity and is a linear pushing chain. The head of the linear pushing chain is used to push articles. The guide rail mechanism comprises a double-chain guide rail for the double-chain structure to travel in the middle and single-chain guide rails connected at the head and tail of the double-chain guide rail and located on both sides of the double-chain guide rail. The length of the single chain is greater than that of the single-chain guide rail, and the double chain can push or move target articles back and forth within the range of the double-chain guide rail and can be output from the left end or the right end of the guide rail mechanism and push or pull target articles outside the guide rail mechanism. The device can meet the requirements of long distance, bidirectional movement, high speed, high rigidity, high precision, good stability, large load, high efficiency, low noise and small space occupation, and can realize multi-directional linear transmission.

The invention discloses an Internet of Vehicles cross-domain authentication and key agreement method based on a double-chain structure. The method comprises the following steps: generating system public parameters based on a trusted authority and writing the system public parameters into a main chain; generating a corresponding identity encryption value, a reputation value, an area number and a vehicle and road side unit binding value based on the road side unit registration information; generating a virtual identity, a secret value and a binding parameter of the vehicle based on the vehicle user registration information; the vehicle obtains a binding value of the vehicle and the roadside unit based on the binding parameter and initiates authentication to the roadside unit to obtain an area number; when the vehicle needs cross-domain communication, the vehicle generates a hidden identity and a cross-domain request based on target area verification node information, and a verification node generates an aggregation signature and an encryption seed after verifying the cross-domain request; the main node verifies the legality of the vehicle based on the aggregation signature, and decrypts the encrypted seed to obtain a seed; and the main node queries in the main chain based on the area number and the virtual identity of the vehicle to obtain a secret value, and verifies the session key based on the secret value and the seed.

The utility model provides a novel vertical limiting structure for lifting of a paper pile platen. The up-and-down limiting structure adopts a double-chain-wheel and double-chain mode, and the double chain wheels are the lifting chain wheel and the limiting chain wheel; the double chains are a lifting chain and a limiting stroke chain. According to the up-down limiting structure, the lifting chain is driven to ascend or descend through the work of the lifting chain wheel and the limiting chain wheel, so that the limiting stroke chain moves along with the lifting chain, and the limiting contact on the limiting stroke chain and the three proximity photoelectric points preset on the photoelectric induction control device can generate induction; therefore, the preset ascending, speed reduction and stopping positions of the paper pile bedplate are accurately controlled. The up-and-down limiting structure is installed in an outer cover of the paper collecting machine and can be prevented from being collided in the transportation process, and normal operation of the structure is not affected. The upper and lower limiting structures are simple to process, practical, wear-resistant and free of replacement in production, and the production cost of products is reduced.

1. Name of the designed product: watchband (double chain). 2. Use of the designed product: watchband for watch. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view 1. 5. Other views are omitted because the faces are not commonly used in use and have been embodied in perspective views 1-6.

The utility model provides a double-chain conveying device for irradiation processing of a trolley. The double-chain conveying device for irradiation processing of the trolley comprises a bottom plate. A chain conveying assembly is arranged at the top of the bottom plate. The chain conveying assembly comprises an inner chain part arranged on the front side of the top of the bottom plate, an outer chain part is arranged on the top of the bottom plate and located on the rear side of the inner chain part, and a trolley rail part is arranged on the top of the bottom plate and located on the side, opposite to the outer chain part, of the inner chain part. According to the double-chain conveying device for trolley irradiation processing, the irradiation trolleys are alternately driven to move forwards through the arrangement of the inner chain and the outer chain, the stability of the irradiation trolleys can be guaranteed, meanwhile, the irradiation trolleys are sequentially arranged to be irradiated after entering an irradiation area, the distance between the trolleys is small, the ray utilization rate is increased, and the production efficiency is improved. And meanwhile, compared with an existing partial double-chain conveying structure, the device is more compact in structure and low in failure rate, and the construction cost of the shielding body is greatly reduced.

The utility model relates to the technical field of marinated egg production, and discloses a broken skin cleaning device in the marinated egg production process, which comprises a fixing frame, two double-chain-wheel long shafts are rotatably connected onto the fixing frame, and a power motor for driving the double-chain-wheel long shafts to rotate is arranged on the fixing frame. A plurality of elastic silica gel strips can apply friction force to eggs while rotating, meanwhile, a water circulation assembly on a circulation water tank is started, so that a C-shaped washing assembly sprays water to the eggs, and residual egg shells on the surfaces of the eggs can be separated under the impact force of water flow and the continuous friction force of the elastic silica gel strips; residual eggshell fragments on the surfaces of the eggs can be effectively cleaned through the uniform cleaning assembly and the C-shaped flushing assembly, so that the problems that the cleaning effect of eggshells with high adhesive force is poor when the eggs are cleaned only through impact force generated by stirring water flow in a traditional mode, the eggs are easily damaged during stirring, and the cleaning effect is poor are solved. The appearance quality of the eggs is influenced.

The utility model relates to the field of transmission chains, and particularly discloses an integrated parallel chain which comprises outer side chain pieces and reinforcing chain pieces, two opposite ends of the outer side chain pieces are provided with chain pins used for being in pin joint with the reinforcing chain pieces, the two outer side chain pieces are symmetrically arranged, and the reinforcing chain pieces are located between the outer side chain pieces. Gear cavities are reserved between the two sides of the reinforcing chain piece and the corresponding outer side chain pieces, a protection pad is arranged at the top of the reinforcing chain piece, protection wings are arranged on the two sides of the protection pad, tooth grooves allowing teeth to be inserted therein are formed in the protection wings, the two ends of each outer side chain piece are provided with a pre-assembling part and a connecting part respectively, and the pre-assembling part and the connecting part are of an integrated structure. According to the chain link, the reinforcing chain piece is additionally arranged between the two outer side chain pieces, due to the fact that the reinforcing chain piece directly replaces two original additional chain pieces, the production cost can be reduced in the machining production process, and due to the fact that the reinforcing chain piece separates the two outer side chain pieces, the chain link of the structure can form a parallel chain of a double-chain structure.

The utility model relates to food processing automation equipment technical field, concretely relates to a kind of double chain plate tray arranging machine conveying device based on gear and rack drive.The utility model provides a kind of double chain plate tray arranging machine conveying device based on gear and rack drive, including tray arranging machine body and the conveying mechanism located tray arranging machine body one side;The movable plate is slidably connected with the guide rail on the side of the conveying mechanism of tray arranging machine body;The rack is fixedly connected on the outside of guide rail of movable plate, the bottom of rack is engaged with driving gear, and movable rack is moved by driving gear, so that movable plate connected with rack slides along guide rail;Adjustable belt drive system for driving conveying belt is equipped on the tray arranging machine body and conveying belt;The conveying mechanism includes two parallelly arranged food-grade chain plates, and two chain plates are symmetrically installed on the conveying mechanism, and two side chain plates are synchronously linked.

1. Name of the designed product: bracelet (double chain). 2. Use of the designed product: used as bracelet jewelry. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

The intelligent double-chain integrated conveyor comprises a mechanical transmission assembly and an intelligent control assembly, the mechanical transmission assembly comprises a right-angle type rack and machine bases installed at the two ends of the rack, a partition plate is arranged in the middle of the rack, chain cylinders are rotationally installed on the inner sides of the two machine bases, and the two chain cylinders can rotate at differential speed; a plurality of chain teeth are arranged on the chain barrel at equal angles, two chains are installed at the two ends of the chain barrel through the chain teeth, a plurality of scrapers are installed on the two chains at equal intervals, and end grooves matched with the ends of the scrapers are formed in the two sides of the interior of the rack. The path difference between the inner chain and the outer chain during right-angle turning is automatically compensated through the differential mechanism, operation is stable, scraper clamping stagnation and abnormal chain abrasion are avoided, the service life of equipment is prolonged, and the conveying efficiency is improved.

1. Name of the product in this design: Hammered Bicycle Double Chainwheel. 2. Purpose of this design: For use in bicycle chainrings. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

The application provides a high-frequency cable tow chain, which comprises two side chain plates, support rods and reinforcing devices, the two side chain plates are composed of single chain plates and double chain plates which are alternately hinged, the support rods are arranged in three layers of upper, middle and lower layers, the two ends of the support rods are respectively screwed with the two side chain plates, the reinforcing devices comprise interlayer reinforcing mechanisms and longitudinal reinforcing mechanisms, which are uniformly and spacedly arranged along the axial direction of the support rods, the interlayer reinforcing mechanisms are vertically arranged and are used for clamping the upper, middle and lower support rods, and the longitudinal reinforcing mechanisms are horizontally arranged and are used for clamping the upper and lower support rods, and the application has high structure bearing capacity and can avoid causing the heating of metal components.

The invention discloses a transportation traceability management method and device for agricultural products, and relates to the technical field of supply chain management. Agricultural product transportation environment data is collected through a sensor, and the transportation environment data is processed through a Hash algorithm to obtain a first Hash value; obtaining a current timestamp, and obtaining a first data unit according to the transportation environment data, the first hash value and the current timestamp; performing lightweight encryption on the first data unit to obtain first encrypted data; contract verification is carried out on the first encrypted data, if verification succeeds, uplink operation is carried out on the first encrypted data, the first encrypted data is added to the first block, and an uplink log is generated and sent to the second block. Data preprocessing is automatically completed through a Hash algorithm and lightweight encryption, manual recording is not needed, transportation environment data is stored in a first block, an uplink log is synchronously recorded to a second block, a data and index double-chain architecture is formed, records in a specific time period are screened through a timestamp, and the transportation traceability management efficiency of agricultural products is improved.

The invention discloses an elliptical machine with a variable step pitch. The elliptical machine comprises a bottom frame; a stand; a flywheel structure; the rotating structure comprises a rotating shaft piece, a sliding chain, a double-chain sliding block and a single-chain sliding block, the rotating shaft piece is rotationally arranged at the axis of the flywheel structure, a movable channel is formed in the rotating shaft piece and is divided into two single-chain channels and a double-chain channel, the double-chain channel is communicated with the two single-chain channels, and the single-chain sliding block is arranged in the double-chain channel. The number of the sliding chains is two, one ends of the two sliding chains are combined with each other, connected to the double-chain sliding block and arranged in the double-chain channel together in a sliding mode, a single-chain sliding block is arranged at the other ends of the two sliding chains, and the single-chain sliding block and the single sliding chain can slide in the single-chain channel. A pedal structure; by driving the double-chain sliding block or the single single-chain sliding block, the two sliding chains can slide together, the sliding positions of the two single-chain sliding blocks are changed at the same time, and then the step pitch of the pedal structure is adjusted.

The application discloses a kind of organic silicon macromolecular azide coupling agent and preparation method thereof.The organic silicon macromolecular azide coupling agent includes three main chain structures: linear single chain structure, ladder double chain structure and three chain structure.The organic silicon azide coupling agent of the application is easy to break and recombine under the condition of ultraviolet light irradiation, thereby realizing the crosslinking of material.

The utility model relates to the technical field of injection molding product processing, in particular to blister box stacking and collecting equipment which comprises a lower table and an upper table, a frame body and a discharging conveying table are installed on the table top of the lower table, a double-chain type transmission device is installed on the frame body, a plurality of partition plates are fixed between double chains on the left side and the right side in the double-chain type transmission device, and the partition plates are arranged on the upper table. Two sets of correction jacking assemblies are fixed to the bottom of the upper table. According to the blister box stacking and collecting equipment, products are transferred to the partition plate on the horizontal plane to be placed through the external conveying device, transmission is conducted through the double-chain type transmission device, and therefore the products are driven to move upwards, and the correction jacking assembly can push the products to correct the products; and meanwhile, the products can be lifted to a certain height, the products can be conveniently conveyed into the stacking and jacking assembly by the material moving assembly to complete stacking operation, and after being stacked to a certain number, the products are moved away through the discharging conveying table, so that the labor intensity is greatly reduced, the equipment cost is reduced, meanwhile, the structure is simpler, and execution is more convenient.

The embodiment of the invention provides a double-chain-based driving data evidence storage method and device, and relates to the technical field of vehicle information safety. The method comprises the steps that a communication channel is established based on dynamic identity authentication and a sub-chain, so that a main chain receives a data unit and a root hash which are sent by the sub-chain and are bound in a space-time mode, and the data unit and the root hash are obtained by packaging driving data through a sub-chain vehicle-mounted unit node; performing data validity verification based on root hash; and after the verification is passed, carrying out aggregation packaging on the root hash and the data unit. According to the method, the dynamic binding relationship between the driving data and the time and space is established, the data tampering rate can be effectively reduced, so that the anti-repudiation capability is improved, the success rate of man-in-the-middle attack can be effectively reduced through dynamic identity authentication, the double-chain architecture is adopted, the credible evidence storage of the data is realized, and the problem that the credible evidence storage of the data cannot be realized by the existing method is solved.

This utility model provides a flexible conveying mechanism suitable for heat treatment furnaces, characterized by: a drive module, a guide support assembly, a conveyor plate, and a screw adjustment mechanism. The drive module includes two sets of chain conveyors arranged in parallel, each with a sliding track assembly at its lower end. The screw adjustment mechanism is located at one end of each chain conveyor. Each chain conveyor includes a double chain assembly and a drive motor. The front and rear ends of the double chain assembly are respectively supported and connected by a frame. A slider is provided on the side of the frame near the screw adjustment mechanism. The guide support assembly is located between the two chain conveyors. The lower end of the conveyor plate is connected to the double chain assembly. The advantages of this utility model are: the screw adjustment mechanism allows for adjustment of the chain conveyor spacing; the guide rod and limiting structure cooperate to achieve multi-level adjustment to adapt to different workpieces; the double chain assembly and drive motor work together to ensure stable conveying of the conveyor plate, improving conveying efficiency; and the limiting cooperation between the guide rod and the conveyor plate effectively prevents deviation.

1. Name of the product in this design: Sewing machine presser foot (overlock sewing machine single chain, double chain, and roller turning presser foot). 2. Application of this design: This design is used for sewing machine presser feet. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a data sharing method based on a block chain double-chain architecture, and the method comprises the steps: building a double-chain block chain network architecture containing an emergency transaction chain and a common transaction chain based on a vehicle OBU and a road side unit RSU, and dividing a corresponding account book; the vehicle collects Internet of Vehicles service data through the OBU and distributes the data to corresponding transaction pools according to types; calculating an emergency degree index for each transaction entering the emergency transaction chain; calculating a global reputation value of the node by adopting a multi-source multi-right subjective logic reputation model; a high-reputation consensus committee is established, emergency data optimization PBFT consensus is executed, common data standard PBFT consensus is synchronously executed by legal nodes, and data classification efficient sharing is achieved through parallel collaboration of an emergency transaction chain and a common transaction chain. According to the data sharing method based on the block chain double-chain architecture, the problems of high emergency data transmission delay and lack of effective prevention of malicious interference of internal nodes in an existing Internet of Vehicles data sharing technology are solved.