45 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 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.

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.

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.

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 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.

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 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.

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.

The invention discloses a block chain technology-based water quality automatic monitoring method and device, a medium and a product, and relates to the field of water quality monitoring, the method comprises the following steps: regularly and quantitatively collecting a to-be-detected water body, and transacting a water collection time period parameter to a block chain; performing water quality analysis on the to-be-detected water body to obtain a concentration value of each detection index; the concentration value of each detection index is encrypted; and storing the encrypted data to a block chain by adopting a block chain double-chain storage mechanism. The risk that the instrument parameters and the detection data are tampered can be prevented, and the safety and reliability of detection data sharing are improved.

The invention belongs to the technical field of block chains, and particularly relates to a block chain-based carbon emission data trusted transaction and auditing method, which comprises a block chain trusted sensor node deployed in a workshop or equipment, an enterprise node and an auditing node. Group signature, double-chain evidence storage and auditing arbitration are combined to form a complete trusted architecture; a double-chain architecture with a data chain and an auditing chain separated is adopted, and efficient evidence storage and auditing isolation is achieved.

The utility model relates to PCCPD C pipeline technical field, and disclose a kind of PCCPD C pipeline socket joint interface double inverted chain centering installation device, including steel crossbeam body, the side plate of fixed mounting in the steel crossbeam body bottom, fixed mounting in the inner wall of the steel crossbeam body horizontal plate, and setting in the centering assembly of the steel crossbeam body top position, the centering assembly includes the centering mechanism of setting in the steel crossbeam body top position, the top position of the steel crossbeam body is provided with auxiliary mechanism, the centering mechanism includes arc-shaped support plate one and arc-shaped support plate two, arc-shaped support plate one is fixedly installed in the top of steel crossbeam body, the inner wall of arc-shaped support plate one is contacted with the PCCPD C pipeline and is provided, the top of the PCCPD C pipeline is fixedly installed with lifting lug.The utility model has solved the existing PCCPD C pipeline socket joint interface installation, axis centering precision is low, artificial adjustment time-consuming problem, lead to the problem of operator workload increase.

The invention relates to cold extrusion sleeve automatic spraying and heating production equipment which comprises a rack, a feeding frame is arranged on the rack, the rack is further provided with a double-chain track assembly, and the double-chain track assembly comprises two rotating chains, two fixed chains and a chain driving assembly capable of driving the rotating chains to circularly rotate on the rack. The paint spraying device has the advantages that by arranging the feeding frame, the duplex track assembly and other structures, after paint spraying is completed, the sleeve continues to move along with the clamping base assembly, after the clamping base assembly moves to the tail end of the straight auxiliary plate, the ejector rod loses constraint, the spring releases elastic force to drive the ejector rod and the ejector block to move outwards, the sleeve loses constraint and is separated from equipment, and discharging is completed. In the paint spraying process, the two ends of the sleeve are restrained and synchronously drive the sleeve to rotate, the sleeve is stably painted, the rotating speed of the sleeve is not changed according to whether the sleeve is painted or not, paint spraying is more uniform, and the product quality can be guaranteed easily.

The application discloses a kind of production and teaching integration methods based on double-chain dynamic coupling, comprising, by NLP technology, the multi-source heterogeneous data of industry chain and education chain are collected, semantic alignment and structured processing, based on business mapping relationship, ability-knowledge graph is constructed;Based on the graph computation industry chain demand heat map and education chain professional agility index;The semantic correlation strength between the nodes of demand on the knowledge graph on the industry side and the nodes of supply on the education side is calculated;Combine potential value with demand heat map and professional agility, compare semantic correlation strength and heat index with pre-set similarity threshold, heat threshold respectively, and comprehensive matching degree analysis is carried out by combining potential value, identify key capability gap and high potential fusion point, convert into smart contract automatically through blockchain credible network, realize production and teaching integration closed loop for whole process on-chain notarization and audit;The application solves the problems of "response lag", "matching extensive" and "poor sustainability".

1. Name of the designed product: chain. 2. Use of the designed product: used in a mechanical transmission device, double sprocket transmission of large load transmission structure. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

A composition comprising (i) at least one oil-soluble / oil-dispersible cosmetic active ingredient; (ii) at least one solid lipid different from component (i); (iii) at least one liquid lipid different from component (i); and (iv) a combination of at least one double-chain surfactant and at least one single-chain surfactant, wherein the ratio of the total weight of the at least one double-chain surfactant and the at least one single-chain surfactant to the total weight of the solid lipid and the liquid lipid is from 0.3 to 1000, preferably from 0.35 to 500, more preferably from 0.4 to 100, most preferably from 0.5 to 50 is provided. Also provided is a non-therapeutic method for caring for keratin materials comprising applying the composition to a keratin material.

The application provides a double-chain quick-change structure of a furrow opener, and relates to the technical field of intelligent control equipment, and comprises the following: a driving gear of a furrow opener power assembly rotates to drive a furrow opener link assembly to rotate around a gear and a roller; at least one state detection sensor is arranged on a furrow opener mounting seat or a furrow opener frame and is used for collecting running state parameters of the furrow opener link assembly in a rotating process in real time; a controller is electrically connected with the state detection sensor and the furrow opener power assembly respectively, the controller is used for receiving the running state parameters collected by the state detection sensor, generating a control instruction according to a preset control algorithm based on a comparison result of the running state parameters and a preset threshold value, and adjusting an output of the furrow opener power assembly; wherein the driving gear of the furrow opener power assembly rotates to drive the furrow opener link assembly to rotate around the gear and the roller. The application effectively suppresses the chain link deviation and tooth jumping phenomenon, and improves the stability and reliability of the chain link operation.

The invention provides a three-stage seedling throwing device, a fresh ginger harvester and a working method, relates to the field of fresh ginger harvesters, and aims to solve the problem of blockage caused by easy winding during directional output of stalks after tuber cutting at present. A simpler single chain, a fixed shifting rod and a shifting tooth structure are adopted in the key rear half section, the failure rate and the maintenance cost are reduced, the conveying mode is changed from double-chain clamping to single-chain guiding, the problem that damaged or broken stalks are wound into chain wheels is solved, and the continuity of operation is guaranteed; through the design of driving shifting teeth of the three-stage assembly, forced stripping of stalks is achieved, it is guaranteed that the stalks can be successfully thrown out at the conveying tail end, the problem that the stalks return along with a chain due to clamping stagnation is solved, the whole conveying and guiding path is accurate and controllable, the final throwing-out direction and falling point of the stalks are more concentrated and controllable, and the conveying efficiency is improved. And subsequent collection or field returning operation is facilitated.

The application discloses a method for sharing electronic medical data safely in cooperation with double chains, and comprises the following steps: a first trusted node performs an initialization operation; the first trusted node performs a key splitting operation; a data sharer uploads electronic medical data m; a second trusted node obtains a hash value h of the electronic medical data m and stores the electronic medical data m into an internal chain; the data sharer decides to share the electronic medical data m stored in the internal chain; a third trusted node desensitizes the electronic medical data m to obtain desensitized electronic medical data m'; and a variable chameleon hash private key is used to calculate a color-changing parameter. In order to store source data and desensitized data of the electronic medical data simultaneously, the application establishes two data chains, i.e. an external chain and an internal chain, which are used in different environments; meanwhile, in order to keep a certain consistency of the data, the source data and the desensitized data keep a certain consistency, so that the data can be traced back and controlled.

The application discloses a double-chain stretching correcting machine, which comprises a base, an import wheel structure, a fixing structure, a linear guide rail structure and a pushing structure, wherein the import wheel structure is installed at the edge of the upper surface of the base and is used for guiding the chain; the fixing structure is installed on the upper surface of the base; the linear guide rail structure is installed on the upper surface of the base and is located on the front surface of the fixing structure; and the pushing structure is installed on the linear guide rail structure and is used for pushing the chain. The application relates to the field of chain shaping, and the corresponding distance of the chain at the stretching position is guaranteed to be the same. After twice shaping and stretching, the chain is directly packed and used. The artificial comparison process is omitted, and a large amount of manpower is saved.

The utility model relates to the technical field of scraper conveyors, in particular to a double-chain track ball type scraper conveyor which comprises a middle pipe joint, one end of the middle pipe joint is fixedly connected with a driving box, the interior of the driving box is rotationally connected with a driving chain wheel set, and the other end of the middle pipe joint is fixedly connected with a driven box. A rotatable driven chain wheel set is connected into the driven box in a sliding mode, a self-locking mechanism is arranged on the driven chain wheel set, the driven chain wheel set is in transmission connection with the driving chain wheel set through two closed annular chains, and a plurality of scraping plates are arranged between the two chains at intervals. The ratchet wheel disc is applied to the double-chain track ball type scraper conveyor as a self-locking mechanism, more reliable and safer operation guarantee is provided for the conveyor, and by limiting accidental rotation of the driven chain wheel set, the stability of the conveyor is protected, and the service life of the conveyor is prolonged.