608results about How to "Improve transmission stability" patented technology

The invention provides a distribution network monitoring heterogeneous converged communication self-switching device and a distribution network monitoring heterogeneous converged communication self-switching method. The system comprises a communication module unit, a data processing unit and a switching execution unit. In the data processing unit, an environment sensing unit receives state data of the communication module unit, and a PICO unit processes link state data and uploads the link state data to an MCU unit for processing; the data encryption unit is used for encrypting and decrypting transmission data; the data caching unit is used for storing data transmitted during communication abnormity or switching and reissuing the data after communication recovery; and the MCU processing unit executes a link switching strategy according to the data processed by the PICO unit, and controls the switching execution unit to switch when detecting that the quality of the current main communication link is reduced to be below a preset threshold value. According to the invention, automatic and rapid switching in different network environments is realized, and the transmission stability and efficiency of the monitoring data of the power distribution network are remarkably improved.

The invention relates to the technical field of data transmission, and discloses an ultrahigh frequency RFID system data transmission method, device and equipment and a storage medium, and the method comprises the steps: carrying out the band-pass filtering and orthogonal demodulation of a multi-tag backscattering signal received by an RFID reader, and obtaining a tag feature data sequence; performing multi-dimensional feature analysis and time sequence correlation calculation to obtain an independent label signal frame; boundary identification is carried out, and a label data frame starting point is determined; carrying out continuous sampling analysis and label signal conflict identification, and outputting a conflict position sequence; performing matrix interleaving transformation and position rearrangement on the data marked by the conflict position sequence to generate an anti-conflict data packet; the label access scheduling queue is constructed based on the transmission time sequence and the priority attribute of the anti-collision data packet, the multi-label concurrent transmission time sequence is output, and the data transmission performance of the ultrahigh-frequency RFID system is improved through multi-stage signal processing and an intelligent scheduling mechanism.

The invention discloses a wireless signal coverage indoor distribution system in a tunnel environment, which relates to the technical field of wireless communication and comprises a signal source, a signal transmission network, an antenna distribution module and a monitoring module, the signal source is used for providing high-power and multi-band wireless signals, meeting different user requirements and ensuring effective coverage of a tunnel; a high-power and multi-band wireless signal transmitter is adopted as a signal source, various wireless communication signals can be transmitted at the same time, and the requirements of different users are met; according to the invention, the coverage quality and transmission stability of wireless signals in the tunnel are remarkably improved, and comprehensive, uniform and stable coverage of the signals in the tunnel is realized through reasonable arrangement of the high-power multi-band signal source in combination with the optical fiber transmission and the synergistic effect of the amplifier and the repeater; the problems of weak signals and multiple blind areas in a traditional mode are effectively solved.

The invention provides a smart power grid data communication optimization method based on edge calculation, and relates to the technical field of smart power grids, and the method comprises the steps: obtaining an inspection topology network of a target power grid; performing multi-angle communication analysis to obtain K power transmission equipment communication feature tuple sets and L inspection site communication feature tuples; carrying out edge step identification to obtain M edge topology sub-networks; performing balanced configuration of sub-network service resources to obtain M edge computing servers; performing routing inspection by using a routing inspection unmanned aerial vehicle and a routing inspection robot to obtain routing inspection video data of L sites; and distributing the data to M edge computing servers for data preprocessing, and uploading the data to a cloud computing center for routing inspection data analysis to obtain a routing inspection analysis result. According to the invention, the technical problem of low data processing efficiency caused by data transmission delay and overweight network load due to the fact that power grid monitoring generally depends on centralized data processing in the prior art is solved.

The invention, which relates to the technical field of digital information transmission, discloses an AI technology-based digital information transmission sharing operation and maintenance platform comprising a data acquisition module, an AI intelligent analysis module, a frequency spectrum dynamic allocation module, a data classification and transmission optimization module, and a storage adaptation module. According to the method, the spectrum resource utilization efficiency and the transmission stability are optimized, the platform can accurately master the spectrum use condition in real time through the AI real-time spectrum sensing and dynamic frequency allocation technology, the platform can quickly identify idle spectrums and dynamically allocate optimal frequencies for different services in the face of a complex and changeable wireless environment, spectrum congestion and interference are avoided, and the service quality of the system is improved. The fluency of bandwidth and time delay sensitive services is guaranteed, and the transmission interruption risk is reduced.

The embodiment of the invention provides a streaming media video coding method and device, equipment, a storage medium and a product. According to the technical scheme provided by the embodiment of the invention, the coding target code rate is determined according to the sampling bandwidth and the maximum target code rate of the current coding resolution, and the maximum instantaneous code rate is determined according to the coding target code rate, the maximum target code rate, the sampling bandwidth and the bandwidth fluctuation information; and determining the size of a coding buffer area according to the maximum instantaneous code rate and the preset constraint delay, and carrying out streaming media video coding based on a video buffer area checker according to the coding target code rate, the maximum instantaneous code rate and the size of the coding buffer area, thereby accurately estimating the network condition and the network fluctuation condition. The coding target code rate and the size of the coding buffer area are adaptively adjusted, and while the delay constraint is satisfied, the overall picture quality and the transmission stability of the video stream are effectively improved, and the video coding quality is improved.

The invention discloses an adaptation method and circuit for wireless radio frequency signals in a tool box and a storage medium. The method comprises the following steps: in response to a request for obtaining tool identification information, controlling wireless radio frequency signal input to obtain a first receiving signal; adjusting the voltage of the first receiving signal to a target voltage to obtain a second receiving signal; adjusting the frequency of the second receiving signal to a target frequency to obtain a target receiving signal, the target frequency being determined based on the target chip; determining a first transmitting signal based on the target receiving signal, the first transmitting signal being used for transmitting tool identification information; adjusting the power of the first transmitting signal to target power to obtain a target transmitting signal, the target power being determined based on the antenna; and controlling the target transmitting signal to be transmitted to the target toolbox through the antenna. According to the invention, the technical problems of poor transmission stability and low transmission efficiency of wireless radio frequency signals in a tool box in the prior art are solved.

The invention is suitable for the technical field of communication network optimization, and provides a communication equipment comprehensive management method and system based on a 5G message, and the method comprises the steps: judging whether a current network state is in a peak flow stage or not when a core network switch receives a transmission request of a target docking terminal, and if yes, executing the step 2; and if yes, acquiring an initial buffer capacity value pre-configured by the core network switch for the specified data packet of the target docking terminal and a historical operation log of the target docking terminal based on the 5G message. According to the invention, by introducing the technical scheme of dynamically adjusting the buffer area capacity, aiming at the peak flow stage of the network, the processing performance and the data packet characteristics of the target docking terminal are comprehensively considered, and the buffer area capacity of the core network switch is optimized, so that the network transmission efficiency and stability are improved.

The invention discloses a multi-mode mixer, and belongs to the field of mixing and stirring devices. The multi-mode mixer comprises a rack, a charging barrel, a main shaft, a stirring assembly, a charging barrel driving mechanism, a first transmission gear, a second transmission gear, a stirring driving mechanism and a mode switching mechanism, the first transmission gear and the main shaft are coaxially arranged, and the second transmission gear is installed on a stirring shaft of the stirring assembly; the second transmission gear is meshed with the first transmission gear, the stirring driving mechanism is in transmission connection with the first transmission gear, and the mode switching mechanism acts on the first transmission gear and has a locking state and a releasing state for the first transmission gear. Working state switching of the stirring assembly is achieved through the mode switching mechanism, so that the stirring assembly can rotate and stir along with rotation of the charging barrel and can also rotate and stir autonomously, multiple mixing modes are achieved, different mixing modes can be flexibly selected according to material characteristics and mixing requirements, the material mixing efficiency is greatly improved, and the material mixing efficiency is improved. During unloading, the rotation of the stirring mechanism can be used for assisting in unloading, so that the unloading operation convenience is improved; meanwhile, the multi-mode mixer has the advantages of being compact in structure, stable in operation, wide in material application range, good in material mixing matching performance, energy-saving, environment-friendly and the like.

The invention discloses a fast self-adaptive impedance matching method and system and a wireless power transmission system, an MCU enables a pi-type impedance matching network to be in a short circuit state by controlling a relay switch, two groups of reflection coefficients of the system are obtained through measurement of an amplitude phase measurement circuit, and two groups of input impedance are calculated; and calculating to obtain a theoretical optimal capacitor combination corresponding to each input impedance. And actually measuring the reflection coefficients of the two input impedances in the corresponding theoretical optimal capacitor combination, wherein the capacitor combination with the smaller reflection coefficient is the actual optimal capacitor combination. Furthermore, according to the method, a local optimal solution is searched around an actual optimal capacitor combination, and re-impedance matching is completed. And dynamically monitoring the input impedance of the system under the given frequency, and repeating the steps when the change of the input impedance exceeds a set threshold value. According to the method, theoretical calculation is combined with hardware testing, the matching efficiency of the system is greatly improved, in addition, the influence of parasitic parameters on the matching precision of the system can be effectively avoided through a local optimization control algorithm, the transmission efficiency and stability of the system are further improved, and good practicability is achieved.

The invention relates to the technical field of live broadcast systems, and discloses a multi-scene live broadcast system, which comprises an acquisition module, an encoding module, a transmission module, a processing module, a storage module, a playing module and an interaction module, and is characterized in that the acquisition module, the encoding module, the transmission module, the processing module, the storage module, the playing module and the interaction module are arranged; the system can meet the requirements of various scenes such as live broadcast with goods, online education, entertainment live broadcast and the like, provides more flexible and diversified live broadcast services, adopts advanced coding technologies such as an AAC encoder and an H.264 encoder, carries out quantization processing, improves the compression efficiency and transmission stability of audio and video data, improves the quality of live broadcast pictures and sounds, and improves the user experience. The problems of jamming, distortion and the like are reduced; the interactive experience can be enhanced, the interactive experience between the users is enhanced through the arrangement of the interactive module, the users can participate in live broadcast through various interactive modes, and the participation sense and the satisfaction degree of the users are improved.

The invention aims to provide a new energy high-frequency wire harness design method based on electromagnetic compatibility optimization, and relates to the technical field of new energy, and the method comprises the steps: 1, building a new energy high-frequency wire harness type electromagnetic source model, and obtaining the electromagnetic source intensity; calculating a spatial electromagnetic field intensity based on the electromagnetic source intensity; step 2, calculating equivalent transmission line parameters based on the space electromagnetic field intensity; based on the equivalent transmission line parameters, frequency-dependent characteristic impedance is calculated; step 3, calculating crosstalk voltage according to the frequency-variable characteristic impedance; calculating a radiation field of the new energy high-frequency wire harness; calculating the shielding effectiveness of the new energy high-frequency wire harness according to the radiation field; 4, according to the step 1, the step 2 and the step 3, constraint conditions are set, an objective function under the constraint conditions is established, and the objective function is solved through iteration to find the corresponding optimal design parameter vector of the new energy high-frequency wire harness. According to the invention, the transmission stability and the anti-interference capability of the new energy high-frequency wire harness are significantly improved.

The invention discloses a magnetic coupling structure with an anti-offset characteristic, a method and a wireless power transmission system. The magnetic coupling structure comprises a transmitting end and a receiving end, a receiving coil is of an axial symmetry structure and is divided into an inner receiving coil and an outer receiving coil, and the outer receiving coil is formed by sequentially connecting four sub-coils with the same size in series; the four sub-coils are arranged along the circumference and define an inner receiving coil placing area, an inner receiving coil is arranged in the inner receiving coil placing area, and the inner receiving coil and the outer receiving coil can be decoupled mutually due to the winding mode and the space structure of the inner receiving coil and the outer receiving coil. When the receiving end and the transmitting end generate relative position offset, the mutual inductance fluctuation of the system can be maintained in a small range. According to the wireless electric energy transmission system formed by the magnetic coupling structure, an LCC-S compensation topological structure is adopted, the inner receiving coil and the outer receiving coil are connected in series after passing through respective full-bridge rectifier filters, voltage output superposition complementation can be achieved, and the stability of the total output voltage is guaranteed.

The utility model provides an electrocardiogram electrode patch. The electrocardiogram electrode patch comprises a transmission part, a first attaching part and a connecting wire, the transmission part is used for being detachably connected with electrocardiogram detection equipment, and the first attaching part is used for being attached to a to-be-detected first target position; the transmission part is connected with the first attaching part through the connecting line; the transmission part comprises a shielding grounding contact and a first transmission contact; the first attaching part comprises a first flexible circuit board, and the first flexible circuit board comprises a first shielding layer and a detection contact layer; the connecting line comprises a signal transmission core and a second shielding layer wrapping the signal transmission core. The first shielding layer is connected with the shielding grounding contact through the second shielding layer, and the detection contact layer is connected with the first transmission contact through the signal transmission core. By means of the configuration, signals and interference signals can be transmitted independently, and the stability of electrocardiosignal transmission can be effectively improved.

The utility model discloses a film belt transfer printing mechanism which comprises a machine shell, a first winding roller is rotationally arranged in one end of the machine shell through a first connecting shaft, a second winding roller is rotationally arranged in the other end of the machine shell through a second connecting shaft, a lifting plate is arranged in the middle in the machine shell through a hydraulic cylinder, and two transfer printing supports are arranged on the lower side of the lifting plate in an opposite sliding mode through lead screws. The first wind-up roller, the two transfer printing rollers and the second wind-up roller are arranged in the machine shell, transfer printing rollers are arranged on the lower sides of the transfer printing supports, the two transfer printing rollers are arranged on the same horizontal plane, and a transfer printing film belt is wound among the first wind-up roller, the two transfer printing rollers and the second wind-up roller. And a transfer printing film belt is wound among the first winding roller, the two transfer printing rollers and the second winding roller, so that the two transfer printing rollers are driven by the hydraulic cylinder to move downwards, the transfer printing film belt between the two transfer printing rollers can be subjected to lifting adjustment for transfer printing treatment, transfer printing use treatment of different heights can be met, lifting adjustment is convenient and rapid, and transfer printing efficiency can be improved.

The invention discloses a multi-channel signal transmission method and system based on big data, and aims to improve the signal transmission efficiency and stability, the method comprises the following steps: capturing and preprocessing each channel signal data through a big data platform, and calculating each channel signal purity index; inputting the signal purity index of each channel into a machine learning model, predicting a future state value of each channel, and calculating an expected bandwidth utilization rate of each channel according to the future state value of each channel; obtaining the expected data transmission rate of each channel according to the expected bandwidth utilization rate of each channel; calculating the transmission performance of each channel according to the expected data transmission rate of each channel and the stability of each channel; acquiring signal data to be transmitted, determining transmission requirements, selecting a plurality of channels with transmission performance meeting the transmission requirements, and transmitting the signal data to be transmitted through the selected channels; according to the invention, key technical problems can be effectively solved, and signal transmission requirements in different scenes can be met.

The invention provides a multi-thread dynamic video transmission technology based on bird repelling application, which is characterized in that real-time transcoding and transmission of multiple paths of high-definition videos can be completed, multi-thread dynamic video transmission is completed in the same window in a man-machine interaction mode, and the video transmission technology adopts coding terminal cache optimization and congestion control algorithm optimization. According to the coding terminal cache optimization, a specific data structure is applied to cache design, the utilization rate of a cache region is increased, and the data circulation speed is increased; according to the congestion control algorithm optimization, by changing a slow start threshold value, the data volume is changed from exponential growth to linear growth, the data fluctuation in the network is reduced, and the probability of packet loss retransmission is reduced; the QT multi-thread technology is adopted, the data transmission efficiency among multiple threads is improved, the data circulation speed is increased, software flash quit caused by memory overflow is avoided, the system delay time is shortened, a client side can conduct multi-channel video transmission at the same time, and the function requirement for real-time multi-channel video transmission under the complex scene of bird repelling application is met.

The invention relates to the technical field of medical equipment and data transmission, and discloses a data transmission management method and system for a noninvasive ventilator, and the method comprises the steps: inputting current flow characteristic data into a preset first machine learning model, so as to obtain future flow characteristic data in a future time period; inputting the future traffic characteristic data and the initial MTU size into a preset second machine learning model to obtain an optimal MTU size; transmitting data message fragments of data generated by the noninvasive ventilator according to the size of the optimal MTU in a future time period; screening out the generated U lost or wrong data packets and data packet feature data, obtaining priority coefficients of the U lost or wrong data packets according to the data packet feature data, and retransmitting the lost or wrong data packets according to the priority coefficients; according to the invention, the packet loss rate or retransmission amount of the data of the noninvasive ventilator during transmission can be improved.

The invention relates to the technical field of power systems and communication, and discloses an intelligent power grid data transmission system and method of a narrowband Internet of Things, and the system comprises a network coverage enhancement module, a low-delay data processing module, a low-power-consumption management module, and an intelligent load management and data analysis module. The method and the device are used for realizing the stability of data transmission in a signal-limited environment. By introducing the multi-network hybrid transmission architecture and deploying the intelligent antenna and the small base station, the signal coverage range and the transmission stability can be remarkably improved in a signal limited or complex environment, and the multi-network hybrid transmission architecture can determine an optimal network according to real-time signal quality, delay and packet loss probability, so that the stability and the reliability of data transmission are ensured, and the data transmission efficiency is improved. The beam forming of the intelligent antenna and the optimized arrangement of the small base station effectively solve the problem that the signal of the traditional NB-IoT is weak in a building dense area or a remote area by improving the signal gain and the coverage depth.

The invention discloses a stability regulation and control method and system for energy storage of a power distribution network of a power system. The system comprises an energy storage module, a load regulation and control module, an active power distribution module and a data interaction module, the energy storage module collects and analyzes parameter data based on power system requirements and resources, and reasonably stores the parameter data in a database; the load regulation and control module monitors the energy storage condition in real time and predicts and preferentially controls the load; the active power distribution module monitors power flow distribution and optimizes a power distribution scheme; the data interaction module is responsible for issuing a power distribution scheme to related equipment and adjusting and optimizing the scheme according to feedback; an energy storage objective function is established by comprehensively considering various factors, a dynamic optimization algorithm is used for load prediction, real-time monitoring and optimization of a power distribution scheme, a regulation and control scheme is continuously adjusted and optimized through a data interaction and closed-loop feedback mechanism, and meanwhile, an abnormal trigger limit value is set to guarantee stable operation of the system. Therefore, the expandability and maintainability of the system are improved.

The utility model discloses a FAKRA board end connector, comprising an alloy seat, the alloy seat is provided with a fixing groove and a power connection sleeve, and the fixing groove is communicated with the power connection sleeve; the plug-in shell is connected to the power connection sleeve, a plug-in cavity is formed in the plug-in shell, and a limiting opening is formed in the top surface of the plug-in shell; the terminal assembly is inserted into the fixing groove and extends to the power connection sleeve, and the terminal assembly comprises an upper-row insulator, a lower-row insulator, an upper-row conductive terminal and a lower-row conductive terminal, and the upper-row conductive terminal and the lower-row conductive terminal are arranged in the upper-row insulator and the lower-row insulator and extend to the power connection sleeve; the first shielding sheet is inserted between the upper-row insulator and the lower-row insulator and electrically isolates the upper-row conductive terminal from the lower-row conductive terminal; the second shielding sheet is inserted in the rear part of the fixing groove; the upper row of conductive terminals and the lower row of conductive terminals are respectively provided with a plugging section, a connecting section and a welding section which are arranged in sequence, and the whole welding section is |-shaped or inverted T-shaped. Wiring of the FAKRA board end connector on the PCB is optimized, and meanwhile the high-speed signal transmission stability is effectively improved.

The utility model relates to the technical field of ball screws, in particular to a ball screw pair with a ball circulating mechanism on a screw body. Comprising a lead screw, a nut, balls and two ball circulators arranged at the two ends of a threaded body of the lead screw respectively. The lead screw and the nut are matched and jointly form a spiral raceway used for rolling of the balls. The ball circulator is provided with a circulating raceway and a ball inlet and outlet threaded raceway which are communicated with each other; the ball inlet and outlet threaded raceway is jointed with the spiral raceway on the thread body fitting surface of the screw rod; a ball reverse channel is arranged in the threaded body of the screw rod and communicated with the circulating raceway, so that the ball circulator can be applied to a ball screw rod pair applied by functional parts with limited space, and the transmission precision and stability are further enhanced while the transmission efficiency is improved by utilizing the ball circulating raceway; a closed-loop circulation system is formed, smooth operation of the balls is guaranteed, different space requirements are flexibly met, and the same efficient and reliable effect is achieved in a space limited scene.

The utility model relates to the technical field of feeding machines, and discloses a stepped bar feeding machine which comprises a mounting frame and a feeding mechanism, the feeding mechanism is mounted at the end of the mounting frame, a conveying belt is correspondingly arranged on the side portion of the feeding mechanism, a driving mechanism is arranged in the mounting frame, a first beating assembly is further mounted in the mounting frame, and a second beating assembly is further mounted in the mounting frame. A first beating assembly is mounted on the surface of the mounting frame, a second beating assembly is mounted on the surface of the mounting frame, the first beating assembly and the second beating assembly are matched for use, and through arrangement of the first beating assembly and the second beating assembly, when an air cylinder is started, an output shaft of the air cylinder drives a connecting plate to move upwards, so that a driving plate drives a sliding plate to move upwards, and bars are conveyed; and meanwhile, a convex plate on the side of the connecting plate is in sliding fit with a sliding column, so that the sliding column extrudes a telescopic column memory spring, a first striking block and a second striking block on the side of the sliding column slide, a shaking block shakes on the surface of the mounting frame, and the bar on the side of the shaking block is driven to jolt.

The utility model discloses a self-driven belt power-assisted counterweight tensioning device which comprises a fixed seat and a matching vertical plate, a matching groove is vertically formed in the fixed seat, and the matching vertical plate penetrates through the matching groove in a vertical sliding fit mode. The bottom of the matching vertical plate is provided with a balance weight tensioning assembly used for conducting tensioning and power-assisted operation on the conveying belt. The conveying belt tensioning device has the beneficial effects that the counterweight tensioning assembly is arranged at the bottom of the matching vertical plate, so that the tensioning wheel can be upwarped to tension the conveying belt in a mode that the counterweight block of the counterweight tensioning assembly drives the mounting arm to rotate around the supporting shaft, and the tensioning mode of the conveying belt is simple and easy to realize; and meanwhile, due to the fact that the elastic lining of the tensioning wheel is pressed on the surface of the conveying belt, assistance can be conducted on the conveying process of the conveying belt in the mode that the driving motor drives the tensioning wheel to roll, and the conveying stability of the conveying belt can be improved.

The utility model discloses a camera mounting assembly with an adjustable angle. The angle-adjustable camera mounting assembly comprises a mounting base, a mounting bracket and a driving assembly, the installation support is rotatably arranged on the installation base, the driving assembly is arranged on the installation support and the installation base, and the installation support is controlled to rotate relative to the installation base in a multi-stage gear transmission mode so as to adjust the installation angle of the camera. According to the technical scheme, the installation angle of the camera is adjusted through the multi-stage gear transmission capacity of the driving assembly, the multi-stage gear transmission mode has good transmission stability, and after angle adjustment is completed, the whole assembly does not have tiny deformation or rebound; and if the tooth number of each gear is calculated in advance, the precision of the mounting angle of the camera can be controlled, so that the mounting angle can be accurately adjusted through simple and convenient rotation operation.

The utility model relates to the field of shaping and cooling devices, in particular to a PVC (polyvinyl chloride) film shaping and cooling device which comprises a base, a rotating bracket, a rotating motor, a rotating roller, a supporting piece, a heat conducting plate, radiating fins, a lifting bracket, a pressing plate and a locking knob, the top of the base is connected with the rotating bracket; the top of the rotating bracket is connected with a rotating motor; the output end of the rotating motor is in transmission connection with the rotating roller; the side surface of the rotating roller is rotationally connected with the side surface of the rotating bracket; a transmission supporting structure used for transmission tensioning is arranged on the top of the base. The top of the base is connected with the support; the top of the support is connected with the heat-conducting plate; the bottom of the heat-conducting plate is connected with multiple groups of radiating fins; the top of the base is connected with the lifting bracket; according to the device, the cooling speed of film raw materials can be effectively increased, meanwhile, the combination of the heat conduction plate and the heat dissipation fins can rapidly conduct the temperature, heat accumulation at the top of the heat conduction plate is avoided, and meanwhile the pressing plate can conduct pressing machining in the film raw material transmission process.

An EMB braking system ball screw comprises a screw nut, a screw and balls, the screw nut and the screw are provided with a first channel and a second channel respectively, the first channel and the second channel are matched to form a channel allowing the balls to move therein, an assembly groove allowing the output end of a driving motor to be inserted therein is formed in the center of the screw, and the assembly groove is matched with the first channel and the second channel. A clamping groove matched with the output end of the driving motor is formed in the tail end of the assembling groove and used for being fixed to the output end of the driving motor and transmitting driving force provided by the driving motor to the lead screw. The beneficial effects of the utility model are that: firstly, because the clamping groove is arranged at the tail end of the assembling groove, the output end of the driving motor can be well covered by the assembling groove, so that the space occupied by the whole structure is reduced during use; and secondly, the lead screw is directly connected with the driving motor through the clamping groove, so that the driving force provided by the driving motor can directly act on the lead screw, and the transmission stability is effectively improved.

The utility model discloses a feeding lathe bed of a high-speed precise section forming machine for high-precision pipe rolling, which comprises a rack, one end of the rack is provided with a mounting frame, a mounting groove is formed in the middle of the rack, a rotary polish rod is arranged in the mounting groove, one end of the rotary polish rod is rotatably connected with the mounting frame, and a transmission groove is formed in the middle of the rotary polish rod. Supporting faces are formed on the two sides of the machine frame, a bracket is placed on the supporting faces, a lead screw is arranged above the bracket, one end of the lead screw is rotationally connected with a mounting frame, the other end of the lead screw is connected with a first coupler, a placing frame is arranged outside the first coupler, the lower end of the placing frame is fixedly connected with the supporting faces, and the upper end of the placing frame is connected with the mounting frame through a lubricating pipe. And a lubricating oil nozzle and an oil outlet are respectively arranged on the lubricating pipe. The work stability of the feeding machine body can be improved, and machining and assembling of manufacturers are facilitated.

The invention relates to the technical field of robots, and provides an actuator, a joint module, a joint arm, a biped robot, a quadruped robot, a four-wheel-foot robot, a humanoid robot and a robotic.The actuator comprises a shell roughly in a hollow cylindrical shape, a motor assembly and a speed reducer assembly, and the speed reducer assembly comprises an inner gear ring roughly in a hollow cylindrical shape; the inner gear ring is embedded in the shell and fixedly connected with the shell through a plurality of first fasteners, and the first fasteners are arranged in the radial direction of the shell so that the shell can be fixedly connected with the inner gear ring in the radial direction. The actuator can be set to be smaller in axial size and radial size, the requirements for compactness and miniaturization of products in the field of robots at present are met, meanwhile, matching and installation of the shell and the inner gear ring are facilitated, assembly errors are reduced, and the transmission precision and stability of the actuator are improved.

The invention belongs to the technical field of lithium ion battery electrode preparation, particularly relates to a silicon-carbon composite electrode as well as a preparation method and application thereof, and particularly relates to an interface full-scale reinforced silicon-carbon composite electrode as well as a preparation method and application thereof in a lithium ion battery. The electrode disclosed by the invention is an ideal lithium ion battery negative electrode and shows excellent mechanical stability and electron / lithium ion transmission performance, and the prepared battery has high charge-discharge specific capacity and extremely excellent cycle stability and rate capability; moreover, the preparation method disclosed by the invention is simple, low in cost, low in energy consumption, capable of realizing large-scale production and wide in application prospect.