3455 results about "Gear tooth" patented technology

The invention discloses a high-precision and high-reliability harmonic reducer tooth profile simulation machining design method, and belongs to the field of precision transmission. A composite cycloid flexible gear tooth profile is designed by establishing a harmonic reducer geometrical relationship model, deducing a flexible gear deformation equation, an accurate rotation angle relationship and a meshing theory based on an envelope method, and a conjugate region and a conjugate tooth profile are calculated by utilizing MATLAB. Actual deformation and theoretical deformation errors of the flexible gear are analyzed through finite element simulation, flexible gear profile parameters are optimized, an actual neutral layer curve is generated, and then a rigid gear profile is enveloped and calculated. The tooth profile design adopts a non-zero inclination angle composite cycloid, so that the meshing area is expanded by more than 30%, and the maximum stress of the flexible gear is reduced by 22.75% in combination with a linear modification method and a finite element modification method. In addition, through a multi-physical field simulation verification system (including static deformation, dynamic contact and fatigue life prediction) and a neural network optimization tooth shape parameter, the transmission performance is remarkably improved. According to the method, the torsional rigidity can be improved by 66%, and the transmission error is controlled within a high-precision range.

The invention provides a fault diagnosis method and system for a spindle box of a high-speed gear milling machine based on fault mechanism simulation and data fusion. The method mainly comprises the following steps: S1, calculating a tooth profile wear curve of a gear based on an Archard wear principle; s2, three-dimensional modeling software is used for building system models in different wear states, and simulation data sets under different wear degrees are obtained with the help of dynamics simulation software; s3, establishing a data acquisition system to obtain an experimental vibration data set under the actual working condition of the spindle box; s4, constructing a spindle box fault diagnosis model by using the analogue simulation data set obtained in the step S2; and S5, performing fault diagnosis on the experimental vibration data set obtained in the step S3 by using the spindle box fault diagnosis model constructed in the step S4, and identifying the health condition of the spindle box system. Important data support is provided for a main axle box fault diagnosis and health management system, and the diagnosis accuracy and reliability are improved.

The invention discloses a nonlinear dynamic modeling method of a helical gear transmission system considering wear. The method comprises the following specific steps: step (1), establishing a time-varying meshing stiffness calculation model of a helical gear pair in a healthy state; (2) establishing a time-varying meshing stiffness calculation model of the wear fault helical gear pair; (3) establishing a helical gear tooth surface friction model under the condition of mixed elastohydrodynamic lubrication; (4) establishing a deformation equation of the tapered roller bearing; (5) establishing a helical gear transmission system model considering wear, and solving the nonlinear vibration characteristics of the helical gear transmission system under different wear degree faults of the helical gear; the method has the beneficial effects that the nonlinear dynamic model of the helical gear transmission system considering wear is established, and technical support is provided for related technologies of fault dynamic modeling of the current helical gear transmission system.

A compact lever mechanism for assisting in removing and inserting a sled in a chassis is disclosed. The lever mechanism has a longitudinal lever member. A spur gear having gear teeth is coupled to one end of the longitudinal lever member. An ejector component is rotatably connected to the sled. The ejector component has a frame defined by an internal gear support, a first support arm, and a second support arm. The spur gear is positioned within the frame and engages the internal gear support to rotate the ejector component. The first support arm includes a tab engaging a flange of the chassis to apply force to remove the sled from the chassis when rotated in a first direction. The second support arm includes a second tab engaging a cutout in the chassis to apply force to insert the sled in the chassis when rotated in a second direction.

An optimization method of the tooth profile modification of the cycloid gear is provided, and optimizes the method of equidistant-distance combination modification of the tooth profile of the cycloid gear, with the help of multi-objective optimization algorithm based on pressure angle of tooth profile, curvature radius and contact performance, the working range of the tooth profile modification of the cycloid gear is determined, and the optimal modification amount of the cycloid pin gear planetary reducer is determined, the tooth profile of the cycloid gear is modified to compensate these errors, ensure that it has reasonable tooth side clearance, lubrication and assembly, and improve the transmission efficiency and bearing capacity of the cycloid pin gear planetary reducer. The optimization method has the effects of high precision transmission, low noise operation, improving transmission efficiency, prolonging fatigue life and reducing space occupation.

The invention relates to an electric operating device for a manual valve. The electric operating device comprises a small diesel generating set used for providing a power source, a motor, a planetary gear transmission module, an adjustable fixing disc and a control device, wherein the small diesel generating set supplies power to the motor so as to provide operating power; an adjustable base is arranged at the bottom of the motor, an output shaft of the motor is connected with a sun gear of the planetary gear transmission module, a gear ring of the planetary gear transmission module is meshed with a first planet gear and fixed to the adjustable base, and a first planet carrier of the planetary gear transmission module is connected with an adjustable fixing disc. The adjustable fixing disc is detachably installed on a manual operation door wheel of the valve and used for operating a valve switch. The control device is used for starting and stopping the small diesel generator set and the motor, the problem of energy dependence can be solved, and the first-aid repair efficiency is greatly improved. And meanwhile, the problem that a motor is burnt or gear teeth are broken due to rusting and jamming of a field valve is solved.

The invention discloses a design method of a complex shape modifying and finishing wheel and a honing wheel for internal meshing powerful gear honing, and relates to the technical field of machine manufacturing. The method comprises the following steps: establishing a trimming wheel tooth surface numerical model, and judging whether the modification amount of the trimming wheel tooth surface numerical model meets the modification requirement or not; if yes, establishing a space coordinate conversion relation and a conjugate meshing equation of the dressing wheel and the honing wheel, and establishing a honing wheel tooth surface numerical model in combination with the dressing wheel tooth surface numerical model; according to the space coordinate conversion relation between the workpiece gear and the honing wheel and the honing wheel tooth surface numerical model, a complex modification workpiece gear tooth surface numerical model is established, and whether the modification amount of the complex modification workpiece gear tooth surface numerical model meets the modification requirement or not is judged; and if yes, a dressing wheel three-dimensional solid model and a honing wheel three-dimensional solid model are established according to the dressing wheel tooth surface numerical model and the honing wheel tooth surface numerical model respectively. According to the method, precise design and verification of the complex shape modifying and finishing wheel and the honing wheel for powerful gear honing can be achieved.

The invention discloses a face gear planetary transmission system dynamic uniform load test platform and test method, and belongs to the field of gear transmission, and the test platform comprises a rack, a drive motor, a step-up gear box, a face gear planetary transmission system, a magnetic powder brake, a torque sensor, a slip ring, a stress strain test system and the like. The face gear planetary transmission system comprises an input face gear, a planet wheel, a planet carrier, a fixed face gear and the like. According to the dynamic uniform load test, stress values at the tooth root of the face gear and the tooth root of the planetary gear are measured mainly through strain gauges, and the corresponding relation between the tooth root stress and the meshing force at the gear meshing point is obtained through finite element simulation. And calculating the dynamic uniform load coefficient according to the dynamic meshing force root-mean-square values and the average values obtained at the tooth roots of the face gear and the planetary gear. By testing and analyzing the dynamic uniform load coefficient, the load distribution characteristic of the face gear planetary transmission system can be accurately revealed, a scientific basis is provided for structural parameter optimization, meshing performance improvement and reliability design of the face gear planetary transmission system, and then accurate and high-performance design of the transmission system is achieved.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an underground non-circular gear intelligent impact tool which comprises a power module, an axial impact module and a circumferential impact module, the power module enables drilling fluid to impact a turbine in a directional mode through a drainage disc, hydraulic energy is converted into mechanical energy, and the mechanical energy is transmitted to the axial impact module. The power is transmitted to the axial impact module and the circumferential impact module, the axial impact module lifts a rack punch hammer to compress a spring through meshing of an incomplete gear and the rack punch hammer, and when the incomplete gear is disengaged from the rack punch hammer, the spring releases energy to generate axial impact downwards. The circumferential impact module is composed of two groups of incomplete gears and racks which are arranged in an up-down 90-degree staggered mode, the rack punch hammer compresses a spring through meshing of the incomplete gears and the rack punch hammer, and the spring is released to generate circumferential impact when the incomplete gears and the rack punch hammer are disengaged. Periodic impact can be achieved, the mechanical rock breaking efficiency is effectively improved, and the stick-slip phenomenon at the drill bit is reduced.

The invention provides an abrasive flow polishing device and method for gear tooth surface homogenization. According to the method, tooth-shaped drainage pieces with the same shape as the gear are installed at the two ends of the upper portion and the lower portion of the gear, drainage section design is introduced, an abrasive flow medium path runner model is constructed, main parameters influencing an experiment are sampled and grouped through a Latin hypercube sampling method, abrasive flow polishing simulation is conducted in a grouped mode, and a Gaussian regression process is utilized to obtain an abrasive flow polishing simulation result. Selecting the minimum root-mean-square error of each group of PiVi data, determining the group of experimental parameters, obtaining a group of abrasive flow machining process parameters of optimal inlet pressure, back pressure and drainage section length, and finally guiding the experiment; according to the method, the influence of the inlet effect is relieved, the abrasive flow medium path runner model is constructed, a set of optimal abrasive flow machining process parameter combination is obtained, and the method is suitable for spur gears and bevel gears and high in universality.

The utility model provides a placement type fillet weld ultrasonic phased array detection automatic scanning device. The placement type fillet weld ultrasonic phased array detection automatic scanning device comprises a fixing plate, a detection mechanism and a fixing mechanism, notches are formed in the lower ends of the fixing plates; the detection mechanism comprises four limiting gears, a gear ring, a telescopic rod and a detection probe, the four limiting gears are rotatably connected to the fixing plate around the four corners of the notch, the gear ring is meshed with the four limiting gears, the telescopic rod is connected to the gear ring, and the detection probe is arranged at the movable end of the telescopic rod; the fixing mechanism comprises a mounting frame fixedly arranged on the fixing plate, two clamping jaws movably connected to the mounting frame, two transmission rods with one ends movably connected with the two clamping jaws in a one-to-one correspondence mode, and an electric push rod movably connected with the other ends of the two transmission rods. According to the embodiment, the detection probe is driven by the gear ring to surround the to-be-detected pipeline, so that the convenience of the device is improved. And the telescopic rod adaptively stretches out and draws back to ensure the consistency of the distance between the detection probe and the welding seam and improve the detection quality of the welding seam.

The grinding wheel grinding face gear tool setting method based on on-machine measurement comprises the steps that an initial measurement coordinate system of a face gear is established; a face gear manufacturing error is considered, and a measurement coordinate system of the face gear is optimized through an iteration method; based on errors such as tooth profile, tooth pitch and tooth thickness of the face gear, a face gear tooth surface uniform grinding optimization model is established, the position of the measurement coordinate system is further optimized by adopting a nonlinear optimization method, and a final measurement coordinate system is obtained; and finally, determining the position of the grinding wheel grinding face gear according to the basic model of the grinding wheel grinding face gear. The tool setting precision and efficiency of the grinding wheel and the face gear can be improved, and the uniformity of the tooth surface grinding amount of the face gear can also be improved.

The invention discloses a gear tooth surface micro-texture laser machining device and a machining method thereof. The machining device comprises a laser, a movement mechanism used for providing spatial position changes for the laser, a clamping mechanism used for adjusting the posture of a gear and a detection mechanism used for detecting the machining process of the gear micro-texture. The detection mechanism comprises a data acquisition block used for performing data acquisition on a gear tooth surface processing area, and the data acquisition block is fixed on the laser through a supporting plate. During machining, the detection mechanism moves along with the laser, data collection can be conducted on a machining area on line, machining errors can be monitored and fed back in real time, and error compensation can be conducted at any time. The machining device is further provided with a calibration module, and the calibration module is a substrate material made of a gear material. A substrate material can be preprocessed, a substrate material-laser parameter matching model is established, and a basis is provided for subsequent tooth surface texture processing. The invention further discloses a gear tooth surface micro-texture machining method.

The invention provides a gear peeling time-varying meshing stiffness prediction method and system based on a back propagation neural network, and the method comprises the steps: considering a tooth surface peeling fault based on a gear tooth bearing contact analysis method, and constructing a helical gear pair time-varying meshing stiffness calculation model; a real irregular tooth surface peeling area is fitted by adopting a least square ellipse fitting method to obtain an ellipse appearance representation, any peeling position is completely described through six key geometric parameters, the geometric parameters of the ellipse appearance are systematically traversed and fitted, and diversified peeling appearance samples are generated. Introducing a tooth profile deviation matrix corresponding to the peeling morphology sample into a tooth surface bearing contact analysis model, and constructing a training data set; and constructing a back propagation neural network model of multiple hidden layers, and performing end-to-end training by using the training data set, so that the back propagation neural network model learns a nonlinear mapping relationship from geometric parameters to a time-varying meshing stiffness curve, thereby predicting the time-varying meshing stiffness under any peeling morphology.

The invention discloses an involute helical gear tooth surface waviness rapid detection method based on wavelet transformation, relates to the technical field of gear measurement and evaluation, and aims to solve the problems of low efficiency, insufficient anti-interference capability and limited extraction precision in existing tooth surface waviness detection. High-density data sampling is carried out on a specified tooth surface of an involute helical gear, a multi-scale characteristic decomposition signal of wavelet transform is utilized, a tooth surface waviness signal is separated from complex morphology characteristic components, and in combination with a threshold optimization algorithm, detail characteristics of waviness are effectively reserved, and meanwhile interference of non-correlation signals is restrained. In addition, efficient data processing and real-time waviness feature extraction are realized by designing a rapid analysis process and an automatic parameter adjustment mechanism. The method is suitable for gear quality detection in a batch production environment, and provides a reliable basis for defect diagnosis and optimization in a gear manufacturing process. Compared with a traditional detection method, the method has remarkable advantages in the aspects of detection precision, stability and speed.

The invention belongs to the technical field of gear transmission system fault diagnosis, and particularly relates to a gear pitting kinetic model solving method based on microscopic surface topography. Comprising the following steps: establishing a tooth surface morphology and pitting defect model; the tooth surface morphology of the selected gear is sampled, and nonlinear excitation parameters in a gear transmission system are collected; a gear tooth surface morphology mathematical model based on the fractal dimension D and the fractal roughness G is established, and a mixed elastohydrodynamic lubrication coupling analysis mathematical model of the pitted gear under the rough surface is established based on the relation that the curvature radius, the dynamic load, the oil film entrainment speed and the like change along with the change of the meshing position under different surface roughness. And solving the non-linear dynamic mathematical model of the gear with the rough surface. According to the method, the influence of the surface roughness on the rigidity attenuation and pitting extension of the gear can be accurately quantified, the nonlinear dynamic behavior of the gear system under the complex lubrication condition is disclosed, and an analysis method support is provided for the pitting resistance design and life prediction of the gear.

The invention relates to the technical field of workpiece pose monitoring, in particular to a tooth cutting machining workpiece pose error monitoring system, which comprises a visual acquisition module, an industrial camera coordinate system and a workpiece coordinate system, wherein the visual acquisition module is used for establishing a machine tool coordinate system, an industrial camera coordinate system and a workpiece coordinate system; the coordinate system calibration module is used for associating a machine tool coordinate system, an industrial camera coordinate system and a workpiece coordinate system to obtain coordinate system conversion parameters; the image processing and pose calculation module is used for acquiring actual pose information of a workpiece relative to a cutter spindle; the error analysis and feedback module generates pose error information; and the motion control module is used for performing translation error compensation and rotation error compensation on the workpiece and adjusting the pose of the workpiece. According to the invention, the high-precision quantitative analysis of the workpiece pose error is realized by collecting the image and establishing the multi-coordinate system association. The pose error monitoring efficiency is greatly improved, errors caused by subjective judgment are avoided, and the tooth pitch accumulated error, the tooth direction inclination error and the tooth profile inclination error are effectively reduced.

The invention provides a gear tooth surface precision detection method based on a deep learning network, a medium and equipment, and mainly solves the problem of insufficient model generalization ability caused by scarcity of real labeled data and domain difference in an existing method. The method comprises the following steps: collecting a plane workpiece image marked with a roughness level as a source domain data set, and pre-training an intelligent detection model; based on a gear shaping machining meshing motion relation, establishing a tooth surface morphology geometric simulation model, and generating virtual gear tooth surface images of different roughness grades; extracting a real gear tooth surface area image as a target domain sample; a domain adaptation method based on clustering optimal transmission is adopted, the feature distribution difference between a source domain and a target domain is calculated and minimized, model parameters are optimized, and self-adaptive migration of a feature space from a plane image to a gear tooth surface is achieved. According to the method, virtual sample generation and a domain adaptation technology are combined, so that the data acquisition cost is effectively reduced, and the detection precision and the model generalization ability under the small sample condition are remarkably improved.

The invention provides an underground centralizing device and method for a casing deformation well, and relates to the technical field of oil exploitation equipment, and the underground centralizing device comprises a coiled tubing, at least two sleeves, a connecting rod mechanism and a contact area increasing mechanism. A convex ring is arranged on the outer wall of the coiled tubing, the sleeve is slidably sleeved on the coiled tubing, and the convex ring is located in the sleeve to form a pressure cavity. The connecting rod mechanism is connected to the sleeve and used for expanding outwards when the sleeve moves relatively. The sleeves are close to each other by pressing the coiled tubing, and the connecting rod mechanism is driven to expand towards the well wall to achieve righting. The contact area increasing mechanism increases the contact area with the well wall through linkage cooperation of a gear, a rack and a top plate, and the connecting rod is prevented from sinking into the well wall. A mechanical connecting rod structure is adopted to replace a traditional air bag type centralizer, the influence of the gravity effect on the centralizing effect is effectively avoided, and it is ensured that the coiled tubing is accurately kept in the center position of a shaft.

The invention discloses a low-noise stable planetary gear speed reducer, and relates to the technical field of speed reducer equipment. Comprising a main body mechanism, the main body mechanism comprises a main body bin, a front cover is fixedly buckled on one side of the main body bin, and a rear cover is fixedly buckled on the other side of the main body bin; a gear ring is fixedly connected to the middle of the inner wall of the body bin. A discharging assembly is arranged on the lower wall of the body bin. A tailstock mechanism is arranged on one side of the main body mechanism; an oil conveying mechanism is arranged on the other side of the main body mechanism; an oil injection assembly is arranged between the main body mechanism and the tailstock mechanism, the oil injection assembly comprises an oil tank mechanism, and nozzle mechanisms inserted into the main body bin are uniformly communicated with the oil tank mechanism at equal intervals; the oil tank mechanism comprises an oil tank, a tank cover is fixedly buckled to one side of the oil tank, the tank cover is fixedly connected with a rear cover, an input assembly is arranged on one side of the upper wall of the oil tank, impurities hidden in tooth seams can be flushed out and flow out along with leaked oil, and the impurity removing performance is improved.

The utility model discloses a crankshaft timing measuring tool which comprises a rack, a gear seat, a support, a fixed ejector pin, a movable ejector pin and a spring. A gear seat, a support, a fixed ejector pin and a movable ejector pin are installed on the machine frame, a shaft ring I is arranged on the movable ejector pin, a spring is sleeved on the movable ejector pin, one end of the spring is contacted with the machine frame, and the other end of the spring is contacted with the end face of the shaft ring I. The gear seat is arranged between the fixed ejector pin and the movable ejector pin, and a gear shaft is supported on the gear seat through a bearing. The gear shaft is perpendicular to the fixed ejector pin, a driving gear meshed with a gear of the crankshaft is arranged on the shaft ring I, and a hand wheel is fixedly installed at the end of the gear shaft. The support is installed on the outer side of the gear seat, a rod aligning hole is formed in the support, a gear aligning rod is arranged in the rod aligning hole and is in clearance fit with the rod aligning hole, and a second gear capable of being meshed with the gear on the crank is arranged at the lower end of the gear aligning rod. The device is simple in structure and low in cost; the operation is simple, and the measurement is accurate.

The invention discloses a cleaning treatment device for gear machining, and particularly relates to the technical field of gear production, the cleaning treatment device comprises a table body, a PLC is fixedly mounted on one side of the table body, and a driving shaft of an electric motor rotates to drive a cleaning roller and a cam to rotate; furthermore, in the moving process of the scraping roller, the convex part on the surface of the scraping roller can enter the tooth root of the gear tooth, and the residual burrs on the surface of the scraping roller are scraped by reciprocating rolling, and the scraping roller can be always attached to the surface of the gear through the resilience force of a fourth spring in a third mounting cap; and after the steps are completed, the worker continues to control a pneumatic push rod telescopic rod to stretch out through the PLC, then a cleaning roller in the first mounting frame can make contact with the surface of the gear teeth and conduct cleaning treatment on the surface of the gear teeth, and therefore the purposes that the gear can be conveniently cleaned, and the cleaning efficiency is improved are achieved. And meanwhile, residual burrs and burrs at the tooth roots of the gear can be removed.

The utility model is suitable for the field of air filter leak detection, and provides an air filter scanning leak detection device, which is provided with a driving assembly, a mounting shaft, a round rod and a gear, and the driving assembly can drive a plurality of filters mounted in a frame to move to the lower part of a support frame in succession in the process of driving a rotating disc to rotate intermittently, so that the air filter scanning leak detection can be realized. Through cooperation with scanning leak detection modules arranged on the supporting frame, continuous detection of a plurality of filters can be achieved, and in the process that the filters rotate from one scanning leak detection module to the position below the other scanning leak detection module, the gears are meshed with the gear teeth on the fence, the frame and the filters can be driven to be turned over together, and therefore the filter detection efficiency is improved. In the process that the filter rotates by one circle, double-face detection of the filter can be achieved, and compared with the prior art that a device can only conduct single-face detection on the filter, the comprehensiveness and accuracy of scanning leakage detection of the filter are improved.

An electric power train includes an electric drive, an electric motor driven by the electric drive, and a meshing pair of a drive gear and a driven gear. The drive gear is coupled to the electric motor and the driven gear is coupled to a mechanical load. The backlash of the meshing pair of the drive gear and the driven gear is measured and estimated based on a time until a contact of teeth of the rotating drive gear and the driven gear during a startup of the electric motor. Wear of the meshing pair of the drive gear and the driven gear based on a change in the measured backlash over time during the operation of the electric power train.

The invention relates to photoelectric integrated COB packaging equipment, and relates to the technical field of semiconductor packaging, and the photoelectric integrated COB packaging equipment comprises a chip mounting module used for grabbing and mounting a chip, a substrate conveying module used for conveying a substrate, and a photoelectric synchronous packaging module used for realizing interconnection packaging of the chip and the substrate. By arranging the vacuum adsorption adjusting mechanism, when chips of different specifications need to be adapted, the motor drives the rotating disc to rotate, and the rotating disc is meshed with a gear ring structure on the outer layer of the annular disc through gear teeth to drive the annular disc to rotate; a conical tooth structure on the inner side of the annular disc is meshed with a plurality of groups of bevel gears to drive the bevel gears to synchronously rotate so as to drive a threaded column fixed with the bevel gears to rotate; when the threaded column rotates, the movable plate in threaded connection moves in the axial direction of the threaded column, and the distance between the suction nozzles is adjusted. And meanwhile, the vacuum generator independently provides negative pressure for each group of suction nozzles through the air pipe, so that on-off of the negative pressure can be independently controlled to adapt to adsorption and release of chips with different sizes.

The invention discloses a high-performance and long-service-life gearbox assembly which comprises a gearbox body, a gear shaft and a gear. The gear shaft is installed in a bearing sleeve through a first rolling bearing. A fan assembly is mounted on the right end shaft section of the gear shaft; the centrifugal fan is characterized in that the fan assembly comprises a shell, a first impeller, a second impeller and a second rolling bearing, the first side wall of the shell is fixedly connected with an end flange of the bearing sleeve, and the first impeller and the second impeller are installed on the right end shaft section and installed in an impeller cavity defined by the shell; the inner peripheral wall of the second impeller is connected with the right end shaft section through a second rolling bearing; the gear shaft can drive the first impeller to rotate in a torque transmission mode, and at the moment, the second impeller passively rotates under the acting force of suction airflow of the first impeller. The suction performance, flow and efficiency of the fan assembly can be improved, so that the heat dissipation effect on the bearing is improved, the heat exchange efficiency of airflow in the gearbox is improved, the operation performance of the gearbox is improved, and the service life of the gearbox is prolonged.

The utility model discloses a bundling device for cable wire processing, which relates to the technical field of cable wire processing and comprises a base, a fixing frame is fixedly arranged on the base, a circular groove is arranged on the fixing frame, a circular ring is slidably arranged in the circular groove, a gear ring is fixedly arranged on the circular ring, a gear is rotatably arranged on the fixing frame, and the gear is meshed with the gear ring. A motor is fixedly arranged on the fixing frame, an output shaft of the motor is fixedly connected with the gear, a rotating wheel is movably arranged on one side of the gear ring, a transmission assembly is arranged above the base, and a pre-pressing mechanism is arranged above the base. The motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the rotating wheel to rotate around a cable wire, the strapping tape straps the cable wire circle by circle, an external insulating layer of the cable wire cannot be abraded in the transportation process, two pairs of threaded grooves are reserved in the gear ring, and when the cable wire needs to be strapped firmly, the cable wire can be strapped more firmly. And a plurality of rotating wheels can be additionally arranged through screws for bundling according to requirements.

This application provides a rotating shaft and an electronic device. Where the rotating shaft comprises a mounting shaft, a rotating member, a first cam, and a second cam, the rotating member, the rotating member comprise a first mating gear tooth and a second mating gear tooth. A first gear tooth is disposed on the first cam, the first gear tooth includes a first damping part, and a first included angle exists between the first damping part and a radial direction of the mounting shaft. A second gear tooth is disposed on the second cam, the second gear tooth includes a hovering part, a second included angle exists between the hovering part and the radial direction of the mounting shaft, and the second included angle is greater than the first included angle.

The invention discloses a broken tooth repairing method based on a laser cladding technology. The broken tooth repairing method is specifically implemented according to the following steps that 1, the profile of a broken tooth surface is obtained; 2, broken tooth repairing preparation; 3, repairing the section; and 4, heat treatment and performance optimization. The broken gear can be efficiently repaired, the mechanical property and the tribological property of the broken gear can be improved, and the service life of the gear is prolonged.

The present invention discloses a magnetic-assisted bolster side frame automatic clamping mechanism, which relates to the technical field of bolster side frames and includes a housing, a driven gear, and a mounting plate. A fixture is installed on both mounting plates. The driven gear is meshed with a drive gear on the output shaft of a drive motor installed in the inner cavity of the housing. A cylinder with a fixture chuck at its output end is rotatably installed in both housings, and the output end of the cylinder sequentially passes through the mounting tube, the mounting plate, and the bolster side frame base of the fixture. The mechanism also includes a magnetic assist unit that prevents the drive gear and the driven gear from breaking due to excessive stress. The automatic clamping mechanism is additionally provided with a magnetic assist unit, and the magnetic field generates an Ampere force on the energized L-shaped metal assist rod. This Ampere force has a supporting effect on the tilted bolster side frame, thereby reducing the stress acting on the teeth of the drive gear and the driven gear, which can effectively prevent gear tooth breakage.