134results about How to "Guarantee running stability" patented technology

The invention discloses a method and a system for monitoring pressure abnormity of a fuel oil common rail pipe of a marine main engine. The method comprises the following steps: acquiring historical operation parameter data and constructing a data set; the historical operation parameter data comprises historical host load data, historical host rotating speed data and historical fuel oil common rail pressure data; historical operation parameter data are preprocessed, an SVDD model is constructed and trained based on the historical operation parameter data, the model obtains a historical normal data hyper-sphere in a three-dimensional feature space, and the center and the radius of the hyper-sphere are obtained; similarly, real-time operation parameter data collected in real time are preprocessed and then input into the model, the distance between the real-time operation parameter data and the center of the hypersphere is obtained, and the value of the distance is compared with the value of the radius of the hypersphere in historical normal data; and when the numerical value of the distance is large, it is judged that the real-time operation parameter data is within an abnormal range, the fuel oil common rail pressure of the ship main engine is in an abnormal state, and an alarm signal is triggered. The method has the effect of low error rate.

This utility model relates to the field of grinding technology, specifically to a hydraulic vertical pressure plate grinding mill. It includes a base and a housing mounted on the base. A lower grinding disc is rotatably supported within the housing, and an upper grinding disc is positioned above it. Grinding balls are placed between the lower and upper grinding discs. Annular grooves are provided on the contact surfaces of both the lower and upper grinding discs opposite the grinding balls. A pressure plate is positioned above the upper grinding disc. A hydraulic mechanism for applying pressure to the pressure plate is provided on the housing. A turntable is positioned below the lower grinding disc. The turntable and lower grinding disc are positioned and fitted together, ensuring that the lower grinding disc rotates with the turntable. The turntable is rotatably supported by a transmission assembly, which includes a main shaft. The top end of the main shaft is fixedly connected to the turntable, and the main shaft is mounted on a positioning support assembly. An analyzer is located at the top of the housing. This hydraulic vertical pressure plate grinding mill has the advantages of compact structure, stable operation, and high grinding efficiency, and is suitable for grinding various materials.

This invention discloses a telescope lens processing device, specifically relating to the field of telescope manufacturing technology. It includes a processing table, with a processing component fixedly connected to its upper end and a transfer component fixedly connected to its upper part. A receiving tray is fixedly connected to the bottom of the processing table, and a control console is fixedly connected to the left side of the processing component. This telescope lens processing device achieves stable bearing and automated transfer of the lens through the cooperation of the processing table, processing component, and transfer component. The cooperation of the housing, grinding component, and unloading component ensures the stable installation of the processed parts. The combination of hydraulic rods, motors, and a coarse grinding head accommodates the grinding needs of lenses of different thicknesses. The replaceable coarse grinding head enhances the device's versatility. The receiving tray collects processing debris and finished lenses, avoiding environmental pollution, reducing manual labor intensity, improving processing accuracy and work efficiency, and ensuring the stability of the device's operation.

The invention belongs to the technical field of freight unmanned aerial vehicle delivery, and relates to an intelligent cabin door system for an unmanned aerial vehicle and a cabin door structure design method. The system comprises a driving system, a reel system, a curtain plate system, a sliding rail unit and a control unit. The control unit is electrically connected with the driving system; the driving system is arranged on the unmanned aerial vehicle body; the curtain plate system is connected with an unmanned aerial vehicle body through the sliding rail unit, the curtain plate system is connected with the reel system, the driving system is in transmission connection with the reel system through a chain wheel transmission structure, and the driving system drives the reel system to rotate so as to drive the curtain plate system to stretch or retract along the sliding rail unit. Opening and closing of the cabin door are realized. According to the invention, the number of moving parts is greatly reduced, the probability of clamping stagnation and wear failure of a mechanical transmission mechanism is fundamentally reduced, and the operation reliability of a cabin door system in harsh operation scenes such as emergency logistics and disaster rescue is remarkably improved.

The invention relates to the technical field of fan control and discloses a fan control method and system based on sensor data analysis and a storage medium, and the method comprises the steps that fan control data are obtained through an input module, and rotating speed data are extracted and displayed; pWM signals are calculated according to the rotating speed data and the fan attribute data, and the rotating speed of the fan is controlled; a speed sensor collects feedback signals and converts the feedback signals into rotating speed feedback data; matching the rotating speed feedback data with the rotating speed data, if not, displaying early warning, otherwise, displaying the feedback data; and calculating a differential absolute value, and adjusting an early warning flicker frequency or giving an alarm according to comparison with a first reference value. The system comprises a control module, a power supply module, an input module, a fan module, a driving module, a display module and a sound module. The storage medium stores computer programs and implements the method steps when being executed. According to the method, closed-loop control and self-adaptive adjustment of the fan are achieved, the rotating speed and heat dissipation requirements are dynamically matched, and the equipment operation stability is improved.

The application provides a global optimization method of an air conditioning system and a storage medium, and relates to the technical field of intelligent control of air conditioning systems. The application first screens target variables through global sensitivity analysis and generates high-quality training data. Then, the grid search is used to optimize the hyperparameters and verify the generalization ability. Then, the multi-class global optimization algorithm is used to optimize the optimization variables and extract performance data. Based on multi-dimensional trade-off analysis, the target combination of the model and the algorithm is determined to achieve the collaborative optimization of the prediction accuracy, optimization accuracy and optimization speed. Finally, the target combination is embedded in the global optimization architecture and combined with the interference factor prediction value to output the set value, ensuring that the optimization scheme can dynamically adapt to environmental and load changes, significantly reducing the total energy consumption of the air conditioning system, while ensuring the system operation stability and indoor thermal comfort, and realizing the global optimal operation effect.

The invention relates to the technical field of oil delivery, in particular to an oil delivery pipeline valve and a pipeline leakage emergency system.The oil delivery pipeline valve comprises a valve body, a valve seat, a gate plate, a valve deck, a sealing assembly, a valve rod and a worm and gear speed reducing motor, the worm and gear speed reducing motor is electrically connected with the pipeline sealing emergency system, and a gap is formed between the gate plate and the end face of the valve seat; a pushing device for pushing the two gate plates to move horizontally is arranged at the lower end of the valve rod; the gate plate is connected to the bottom of the valve rod through the pushing device, the gaps exist between the working face of the gate plate and the oil inlet and the oil outlet, and the gate plate is horizontally pushed through the pushing device in the downward movement process of the valve rod so that the gate plate can be attached to the oil inlet and the oil outlet; in this way, friction between the working face of the flashboard and the end faces of the oil inlet and the oil outlet is reduced, and the problem that the sealing face of the gate valve is prone to abrasion in the opening and closing process of the gate valve is solved.

This invention discloses a method for detecting the health status of a new energy vehicle power supply, belonging to the field of power supply technology. The invention first extracts abnormal current signals from the phase line current signals of the three-phase inverter of the new energy vehicle power supply at different scale windows. It then extracts amplitude dispersion values ​​from the frequency domain, calculates the three-phase frequency domain cumulative values, generates frequency domain amplitude dispersion weights, and constructs a multi-scale frequency domain feature matrix and weight matrix. Next, it extracts effective abrupt change values ​​from the time domain, calculates the three-phase time domain cumulative values, generates time domain abrupt change weights, and constructs a multi-scale time domain feature matrix and weight matrix. Finally, it fuses the feature matrix and weight matrix of the same dimension, inputs them into a fault detection neural network for processing, and outputs the power supply health status. This invention improves the sensitivity and accuracy of early power supply fault identification, effectively reducing the probability of false positives and false negatives.

The invention relates to the field of flow battery energy storage, in particular to a flow battery energy storage system and a control method.The flow battery energy storage system comprises an energy storage unit and a control management unit, and the control method of the energy storage system comprises the following steps that S1, the system is initialized and calibrated; s2, collecting and preprocessing multi-field coupling data; s3, trend prediction and target calculation; s4, hierarchical prediction cooperative regulation and control; s5, heat management and activity collaborative optimization; s6, full life cycle health monitoring and protection; and S7, carrying out model iteration and strategy optimization. According to the method, the electrolyte activity prediction model is constructed, the prediction regulation and control layer executes advance parameter adjustment, the problem of parameter matching lag caused by postmortem response in the traditional technology is thoroughly solved, and the system always adapts to the operation requirement in advance.

The utility model discloses a self-cleaning intelligent temperature control fresh air system of a prefabricated cabin, which belongs to the technical field of temperature control air exhaust and comprises a fresh air supply module and an axial flow air exhaust module which are arranged in the prefabricated cabin and communicated with an inner cabin of the prefabricated cabin through air ducts. The axial flow air exhaust module and the fresh air supply module are oppositely arranged on the two sides of the prefabricated cabin, a temperature control probe used for monitoring the temperature in the prefabricated cabin is further arranged in the prefabricated cabin, the temperature control probe, the fresh air supply module and the axial flow air exhaust module are all connected with the PLC host, and the axial flow air exhaust module comprises a plurality of axial flow air exhaust fans arranged in parallel. The fresh air supply module comprises a first fresh air supply machine and a second fresh air supply machine which are arranged in parallel, the fresh air supply module and the axial flow air exhaust module can work independently, and by arranging a fresh air self-cleaning air supply system and an air exhaust axial flow fan, the temperature in the cabin body is reduced through air circulation.

This utility model belongs to the field of sludge filtration technology and discloses a dynamic sludge filtration device, including a housing. A filtration unit and a discharge unit are connected to the outside of the housing via a rotating motor and a discharge motor, respectively. The filtration unit and discharge unit are located inside the housing. A water pumping unit is located at the top of the housing and connected to the water pumping unit via a filtration water pumping pipe. The discharge unit is located at the bottom of the filtration unit and the water pumping unit. This utility model can increase the sludge contact area and filtration area, allowing liquid to penetrate into the filter housing more quickly. Combined with the rotating water pumping component, the liquid is promptly extracted, improving the speed and efficiency of sludge dewatering and shortening the processing cycle. The rotating motor drives a rotating rod, which in turn causes the filter housing to rotate within the sludge. Dewatering is achieved using the principle of free liquid permeation. Compared to traditional methods that rely on strong external force for dewatering, this effectively reduces the moisture content of the filter cake and significantly reduces energy consumption.

The invention discloses an intelligent vibrating wire sensor measurement method with self-identification of serial numbers and temperature compensation, and relates to the technical field of intelligent sensor measurement, and the method comprises the specific steps: configuring various modules for intelligent vibrating wire sensor nodes, and distributing unique serial numbers; after the nodes are started, a dynamic micro-cluster is established; selecting a main node in the micro cluster to construct a local three-dimensional temperature field model and synchronizing; performing temperature data error correction by each node according to the data; and finally, outputting the corrected temperature measurement data marked by the self-identification number by each node, and determining the data affiliation node. According to the invention, unique numbers are distributed for nodes to solve data affiliation chaos; dynamically building a micro cluster and electing a main node to guarantee stable operation; a local three-dimensional temperature field model is built based on the cluster, and the traditional limitation is broken; error types are accurately distinguished and differentiated compensation is carried out, comprehensive correction is carried out in combination with multiple calibration parameters, data additional check codes are output, and transmission completeness is ensured.

The invention provides an automatic operation and maintenance scheduling system and method in a cloud computing environment. The method comprises the following steps: predicting a load demand curve through historical load time sequence data and real-time load indexes of an online service cluster; generating an arbitration decision of resource operation and maintenance scheduling according to the simulated resource occupation contour of the online service cluster constructed by the load demand curve and the resource request queue corresponding to the offline task cluster; issuing a reserved resource permission to the second control ring by the arbitration decision, and injecting a virtual node resource view complementary with the reserved resource permission in time and space into the first control ring; and when the real-time load index triggers the first control ring to perform resource scaling operation, the first control ring executes instance scaling in a resource boundary limited by the virtual node resource view, and the second control ring starts and stops the offline task instance in the corresponding resource block according to the current reserved resource permission. According to the technical scheme provided by the invention, collaborative scheduling of operation and maintenance of the online service cluster and the offline task cluster can be realized under load fluctuation.

This invention discloses an industrial wastewater purification device for thermal power plants, relating to the field of industrial wastewater purification technology. It includes a tank body and a moving assembly. The top of the tank body is fitted with a lid, with an inlet pipe on one side of the top of the lid and a dosing pipe on the other side. A filter plate is fixedly connected to the upper part of the tank body, and a collection pipe is installed on the outer side of the upper part of the tank body. The moving assembly is connected to the middle of the lid and includes a motor. The output end of the motor is connected to a reciprocating screw, and a transmission seat is sleeved on the outer side of the lower part of the reciprocating screw. This invention adopts an integrated linkage transmission structure, realizing the phased automatic continuous operation of stirring, settling and drainage, and bottom discharge in industrial wastewater treatment, significantly improving treatment efficiency and automation level. During the treatment process, the working mode can be automatically switched through a single motor drive and the cooperation of unidirectional transmission and a guiding mechanism.

The application belongs to the technical field of robot end effector, and discloses an electromagnetic driving dexterous gripper based on soft beam bending mode switching, which comprises an outer frame, an upper part of which is provided with an electromagnetic driving module, and a lower part of which is fixed with an outer frame magnet, the electromagnetic driving module comprising an electromagnetic coil and a magnet; a soft beam driver, one end of which is connected with the magnet, and the other end of which is hingedly supported in the outer frame, the soft beam driver comprising a soft beam and a soft beam center magnet installed on the soft beam; and a finger, which is installed on the outer convex surface of the soft beam. The electromagnetic driving dexterous gripper provided by the application can pick up planar light and thin objects, and solves the problems that the existing rigid clamping jaw is difficult to pick up planar light and thin objects and the flexible clamping jaw has a slow dynamic response.

The invention relates to a rotor iron core part and an assembling device thereof, and relates to the technical field of rotor iron cores, and the rotor iron core part comprises a rotor part and a stator iron core. The assembling device comprises a base, a supporting column, a working platform, a stamping die, a positioning mechanism, a middle cylinder, a rotating part, a position correcting mechanism, a limiting pressing mechanism, an extruding mechanism, a supporting electric push rod, a sliding column and a supporting mechanism. The rotation stability of the subsequent rotor is easily influenced by the higher temperature, the magnetic conduction effect of the iron core is also easily influenced by the high temperature of the rotor, and the iron core is easily deformed due to the high temperature; and lamination of the existing stator iron core mostly depends on welding or bolt fixation, the process is complex, and the integrity of the iron core is easily influenced by assembly errors.

The invention provides a magnetic suspension generator rotor vibration suppression device and method, and belongs to the technical field of magnetic suspension generators, and the device comprises an electromagnetic bearing, a passive magnetic bearing and a damper; the electromagnetic bearing comprises an iron core and two coil assemblies, the iron core is installed on the outer wall of the rotor, and the two coil assemblies are arranged around the iron core; the passive magnetic bearing comprises an inner-ring permanent magnet and an outer-ring permanent magnet, the inner-ring permanent magnet is mounted on the outer wall of the rotor, the outer-ring permanent magnet is mounted on the inner wall of the generator shell, and the two corresponding permanent magnets have the same magnetism; the damper is installed on the generator and provided with a damping body and a stress sensor, one end of the rotor is connected to the damping body, and one end of the damping body is connected to the stress sensor. According to the magnetic suspension generator rotor vibration suppression device provided by the invention, by virtue of the radial and axial targeted suppression design, the out-of-control galloping of the rotor caused by excessive vibration is effectively avoided, and the operation stability and safety of the generator are guaranteed.

The invention discloses an intelligent high-voltage cabinet based on Internet of Things, which relates to the technical field of high-voltage cabinets and comprises a cabinet body, a partition plate is fixedly arranged in the cabinet body, a pair of electrical equipment is placed on two sides of the top surface of the partition plate, a U-shaped support is fixedly arranged in the middle of the top surface, and a pair of clamping plates are arranged on two sides of the U-shaped support and abut against the electrical equipment on the corresponding side. The U-shaped support is hinged to the clamping plate through the hinge assembly. Four pairs of first connecting shafts are rotatably inserted into the corners of the top surface of the partition plate, first swing arms are fixedly arranged at the top ends of the first connecting shafts, first clamping blocks are hinged to the outer ends of the first swing arms, and the first clamping blocks abut against electrical equipment on the corresponding sides; two pairs of second connecting shafts are rotatably inserted into the top surface of the partition plate, second swing arms are fixedly arranged at the top ends of the second connecting shafts, and second clamping blocks are hinged to the outer ends of the second swing arms and abut against electrical equipment on the corresponding sides. Through combination of mechanical transmission and elastic buffering, efficient and accurate clamping and positioning are achieved, good buffering protection is achieved, the operation reliability of the intelligent high-voltage cabinet is improved, and the requirement for stable management and control of equipment in the scene of the Internet of Things is met.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The application discloses a kind of nano-silica polycarbonate film moisture permeability detection device, it is related to polycarbonate film detection technical field, including water storage tank and adjusting assembly, the top of water storage tank is connected with load disc by one-way valve, and the inside of load disc is placed with lower partition, the top of lower partition is provided with top cover, and the inside of top cover is placed with upper partition, the periphery of load disc is connected with connecting assembly.The application forms multiple independent test chambers by lower partition and upper partition, which makes it possible to place the same sample in multiple different humidity environments simultaneously and efficiently for comparison testing when detecting the moisture permeability of nano-silica polycarbonate film. The humidity environment is accurately generated by the humidifying unit and drying unit, and the mixture ratio of dry and wet gas input into each chamber is flexibly adjusted by the bus adjusting valve, thereby achieving wide-range humidity control.

The utility model discloses a spring shock absorber capable of reducing horizontal vibration of a fan, and belongs to the technical field of shock absorbers. A spring shock absorber capable of reducing horizontal vibration of a fan comprises a shock absorption box, a movable shock absorption movable plate is arranged on one side of the shock absorption box, supporting bolts penetrate through the shock absorption box and the shock absorption movable plate, an inner balancing weight and outer balancing weights are arranged in the shock absorption movable plate, and the outer balancing weights are arranged on the two sides of the inner balancing weight; through cooperation of the damping box and the damping movable plate, violent release of vibration energy can be effectively relieved under the damping effect of the damping spring, and horizontal vibration of the fan is remarkably reduced; the inner balancing weight and the outer balancing weight are connected to the supporting bolt in a sliding mode and coated with lubricating grease to guarantee smooth sliding, and vibration can be buffered through movement of the inner balancing weight and the outer balancing weight. The four damping boxes are installed at the four corners of the bottom steel plate of the fan, and the damping effect on horizontal vibration of the fan is comprehensively improved by combining a fixing structure of the supporting pieces and the connecting pieces.

This invention relates to the field of quartz device processing technology and discloses a quartz device heat treatment operating table device, including a processing table, a monitoring camera, a robotic arm, an operating table, explosion-proof glass, and a protective device. The monitoring camera is fixed to the upper surface of the processing table, the robotic arm is fixedly installed on the surface of the processing table, the operating table is located on the upper surface of the processing table, the explosion-proof glass is located at one end of the processing table, and the protective device includes a track, which is opened at one end of the processing table, and the explosion-proof glass is slidably connected to the track. In this invention, the explosion-proof glass can be automatically raised and lowered by a servo motor, a bidirectional threaded rod, and other structures, quickly forming a shield for the processing area during equipment processing, effectively preventing the splashing of processing debris, ensuring the safety of operators and surrounding personnel, and the explosion-proof glass can be easily reset by reverse rotation of the servo motor without affecting subsequent product handling and normal equipment operation.

The present application relates to the field of agricultural machinery control technology, and particularly relates to a hybrid power tractor intelligent power distribution method based on multi-domain joint control, comprising the following steps: S1, collecting power domain, chassis domain and operation domain data of the hybrid power tractor, and constructing a multi-domain perception graph reflecting current working condition requirements; S2, based on the multi-domain perception graph and power data, fusing operation energy-saving priority and traction load, and constructing a multi-source power supply and demand mapping model; S3, according to the supply and demand mapping model, selecting an optimal driving mode, combining the efficiency, energy and thermal load of each power source, outputting driving switching logic and power distribution instructions, and realizing intelligent power scheduling. The present application realizes intelligent driving mode switching and efficient power distribution of the hybrid power tractor under different working conditions, and improves operation energy efficiency and system response capability.

The application discloses a kind of water power plant cross-regional energy distribution method and system, by collecting water power plant operation full-dimensional feature data and cross-regional power grid load feature data, after hierarchical feature decomposition, adaptive anomaly filtering, key feature separation, multidimensional feature extraction and principal component dimension reduction etc., the state space of DDPG network is constructed;Actor decision network outputs the power scheduling probability distribution of each cross-regional power supply node, generates multiple feasible distribution strategies after constraint verification;Critic evaluation network is based on the multi-objective comprehensive benefit score of energy utilization efficiency, power supply reliability, transmission cost and unit loss, determines the best distribution strategy;According to the comparison result of score and threshold value, set differentiated reward value and execute corresponding network parameter update strategy, realize the dynamic optimization and adaptive control of scheduling scheme.

The utility model relates to the technical field of production and manufacturing of non-ferrous metal alloy materials, in particular to a dust treatment device for production and manufacturing of non-ferrous metal alloy materials, which comprises a device body, the device body is provided with a connecting mechanism, and the connecting mechanism comprises a connecting assembly arranged on the outer wall of the device body. A scraping assembly is arranged on the upper section of the device body, and a screening assembly is arranged on the lower section of the device body. The screening assembly of the device is unique in design, the screening plate is driven by the connecting sliding sleeve to reciprocate up and down, dust in production of non-ferrous metal alloy materials can be efficiently screened through cooperation with the scraping plate at the bottom, the screening precision and efficiency are improved, the scraping plate can scrape off materials left on the screening plate in time when the screening plate moves, and the screening efficiency is improved. And meanwhile, the inner wall of the device can be ensured to be clean, the service life of the device is prolonged, and the maintenance cost is reduced.

The application belongs to the technical field of wireless communication, and relates to a hardware fast reconfiguration terminal and method. A VPX architecture is used to configure a plurality of slot positions of the terminal to support flexible plugging of a signal processing module and a radio frequency front end. Standardized interaction of data communication between modules, system control monitoring and health management is realized based on PCIe / SIRO, a local area network and an IIC bus. An embedded operating system is deployed in a main control module. A core framework of a domain manager and a device manager and basic equipment and service components corresponding to hardware capabilities / resources are included. The hardware platform is logically abstracted to release deep binding of software and hardware. In addition, terminal functions are disassembled into independent waveform components with standard interfaces. Standardized communication between the components is realized through a soft bus and a hardware abstraction layer interface. Waveform application is dynamically deployed by relying on external waveform deployment management software to complete function switching. In this way, the architecture limitation of strong coupling of existing communication equipment software and hardware is broken, and the technical problem that hardware resources cannot be dynamically reconfigured is solved.

The utility model discloses a kind of air conditioner condensate water recycling devices, it is related to condensate water recycling technical field, including water collecting pool, the import of water collecting pool is connected with the drainage port of air conditioning unit via water collecting pipeline, the outlet of water collecting pool is connected with the water inlet of cooling tower via drive source;Filtering water tank for filtering impurities in its pipeline is arranged on the water collecting pipeline, filtering element is arranged in filtering water tank, so as to divide the tank cavity of filtering water tank into the front cavity connected with the water inlet of filtering water tank and the rear cavity connected with the water outlet of filtering water tank, and the rear cavity bottom height is lower than the front cavity bottom height.The water collecting pipeline in the utility model is directly connected with air conditioning unit and cooling tower, forms closed loop recycling path, ensures that condensate water is directionally transported;Filtering water tank is arranged in recycling path simultaneously, two-stage filtering element built-in filtering water tank is arranged in water flow direction in turn, realizes progressive interception of physical impurities, provides the water supply source of preliminary purification for cooling tower.

The application relates to a cigarette packet extracting device and method. The cigarette packet extracting device comprises a first mounting bracket, a driving mechanism, a crank, a connecting rod and an executing mechanism. The first mounting bracket is used for mounting on the rack of a cigarette packet extracting conveying belt. The driving mechanism is mounted on the first mounting bracket. The driving mechanism is in driving connection with the crank, and the connecting rod is in driving connection with the crank. The executing mechanism comprises a hook hand which is in driving connection with the connecting rod so that the driving mechanism drives the hook hand to reciprocate through the crank and the connecting rod. The cigarette packet extracting device and method have the advantages of high stability, long service life and high machining precision.

The utility model relates to a centering device technical field especially a kind of plush cloth roll envelope centering device, including two symmetrically arranged mounting racks, two the inner wall of mounting rack is respectively up and down structure rotationally connected with two conveying rollers, conveying roller outer wall is all equipped with conveying belt, conveying belt is all equipped with transmission shaft in, conveying roller is driven connection with transmission shaft by conveying belt, the end of transmission shaft is rotatably connected with fixed frame, multiple fixed plates are fixedly connected between two the mounting racks, the outer wall of fixed plate is all fixedly connected with multiple support frames, rotatably connected with cylinder between two the support frames, the output end of cylinder is rotatably connected with connecting shaft, the both ends of connecting shaft are all fixedly connected with support plate.The utility model among them device, the setting of cylinder, fixed frame and conveying belt, by cylinder drive realizes the active expansion and shrinkage of up and down conveying belt gap, adjust wide gap when threading, solve the problem of difficult threading of narrow gap, avoid cloth jam.