492 results about "Mechanical devices" patented technology

The present invention belongs to the technical field of signal processing, and particularly relates to a multi-source data fusion fault diagnosis method and system based on the DS evidence theory. The method of the present invention comprises: first, collecting multi-source information of a mechanical device, wherein the multi-source information includes vibration data, image data and sound data; respectively calculating corresponding feature indicators; then, using a PCA algorithm to perform dimensionality reduction processing on the indicators; using a Bayesian fault diagnosis model to perform fault diagnosis, so as to obtain a diagnosis result from each sensor; and then, using the DS evidence theory to perform fault fusion diagnosis. The present invention can comprehensively consider the characteristics of various types of data, extract more effective fault indicators, achieve more comprehensive fault identification, and fuse diagnosis results from a plurality of sensors, thereby ensuring the accuracy of final diagnosis. The present invention is suitable for fault diagnosis of various complex mechanical systems.

The invention discloses a motor current fault diagnosis method based on a de-noising diffusion probability model, and belongs to the technical field of mechanical equipment state monitoring and fault diagnosis, and the method comprises the steps: obtaining an original motor current signal sample, carrying out the wavelet transformation, obtaining a time-frequency grayscale image, and obtaining a time-frequency grayscale image; dividing the sample into a training sample used for diffusion model training and a test sample of a fault diagnosis model; constructing a diffusion model DDPM, carrying out training by adopting the training sample, and generating a pseudo sample based on the trained diffusion model; constructing a fault diagnosis model MAF-Cnet, and training the MAF-Cnet based on the training sample and the pseudo sample to obtain the trained MAF-Cnet; and inputting a test sample into the trained MAF-Cnet for diagnosis to obtain a motor current fault diagnosis result. The method solves the core problem that the generalization ability of the diagnosis model is insufficient due to scarcity of motor fault samples, improves the diagnosis accuracy, and is wider in application scene.

An artificial intelligence-based system and method facilitate enhanced interaction between users and mechanical devices such as vehicles. One system uses an application equipped with AI algorithms to process user inputs concerning specific vehicle information and issues, providing tailored recommendations and feedback. This includes automated troubleshooting, parts recommendations, and maintenance advice, aiming to improve user experience and vehicle upkeep efficiency.

The invention discloses an online health monitoring and remote control method and system for hoisting mechanical equipment, and relates to the technical field of industrial equipment health monitoring and intelligent control, and the method comprises the steps: constructing health grade judgment, credibility calculation and abnormal trend intensity analysis results into a real number BPA, carrying out the complex field expansion of the real number BPA, and carrying out the remote monitoring of the health of the hoisting mechanical equipment; obtaining a plurality of evidence sets; calculating the credibility of the plurality of evidences in the plurality of evidence set, and classifying the plurality of evidences, including high-credibility evidences and low-credibility evidences; and performing weight discount correction on the low-credibility evidence, fusing the corrected plurality of evidences by using a plurality of evidence combination rule, and generating a final health evidence value by adopting a conservative decision strategy. Therefore, a stable and credible health assessment conclusion can still be formed when various state assessment results have uncertainty or conflicts, and the conclusion is used as a remote control decision basis, so that the reliability of equipment health state judgment and the safety of a remote control process are improved.

The invention relates to the technical field of rolling bearing state monitoring, and discloses a rolling bearing performance degradation evaluation method based on kernel optimal global locality preserving projection and Sinkhorn distance, which comprises the following steps: acquiring an original vibration signal of a rolling bearing, performing feature extraction on the original vibration signal, and constructing a high-dimensional feature set; calculating and screening features in the high-dimensional feature set, and constructing a sensitive feature set; performing dimension reduction processing on the sensitive feature set by adopting a kernel optimal global locality preserving projection method to obtain a low-dimensional feature matrix; in the low-dimensional feature matrix, the difference between samples is calculated based on the optimal transmission distance of entropy regularization, and a Sinkhorn distance matrix is constructed; on the basis of the Sinkhorn distance matrix, constructing a degradation index; a health threshold is set, an early degradation point is judged through the degradation index and the health threshold, rolling bearing fault recognition and performance evaluation are achieved in combination with the change trend of the degradation index value, and technical support can be provided for health monitoring and intelligent maintenance of rotary mechanical equipment.

A mechanical health monitoring-oriented dynamic visual data space-time dimension adaptive intelligent noise reduction method comprises the following steps of: firstly, acquiring dynamic visual data of a mechanical equipment vibration region by using an event camera, and performing region division on the acquired data to extract a region of interest; then, the visual signal is divided into a plurality of event blocks based on a three-dimensional event window, a Gaussian distribution probability function is constructed according to timestamps of events in the event blocks, and noise filtering of the time dimension is achieved by setting a probability threshold value; and on this basis, the spatial distribution position of the event after noise reduction is further obtained, the aggregation connected domain of the event is searched, and the event in the low-density connected domain is filtered in combination with a set event number threshold value, so that space-time combined noise reduction processing is realized.

The invention relates to a magnetic suspension bearing control system and method and refrigeration equipment, and the system comprises a magnetic suspension bearing control module which is used for controlling a magnetic suspension bearing; the battery management module is electrically connected with the magnetic suspension bearing control module; and the master control module is respectively connected with the magnetic suspension bearing control module and the battery management module and can control the battery management module to store electric energy when the voltage of the magnetic suspension bearing control module is excessive and supply power to the magnetic suspension bearing control module when the power supply of the magnetic suspension bearing control module is insufficient. According to the technical scheme of the magnetic suspension bearing control system, through cooperative work of the battery management module and the master control module, the stability, the energy-saving performance and the response speed of the system are enhanced, the service life of equipment is effectively prolonged, and the maintenance cost is reduced. The integrated solution provides a safer, more reliable and more economical operating environment for high-performance and high-precision mechanical equipment.

The utility model discloses a gas pipeline anti -damage early warning line fixed structure relates to gas pipeline technical field, including pressure regulating cabinet and cell -phone mobile terminal. Through set up's audible -visual integrated alarm, segmented early warning processor, video break -in monitor, detection line host computer and pipeline damage early warning detection line, make video break -in monitor can carry out monitoring early warning to the personnel and equipment of entering pipeline upper area, and send personnel break -in early warning signal to cell -phone mobile terminal through segmented early warning processor, audible -visual integrated alarm carries out audible -visual alarm and reminds personnel and mechanical equipment to pay attention to entering gas pipeline area, when mechanical equipment excavates on pipeline upper, pipeline damage early warning detection line is destroyed, and detection line host computer detects excavation signal, and segmented early warning processor receives excavation signal and dials a call early warning reminder to cell -phone mobile terminal, and audible -visual integrated alarm carries out audible -visual alarm and reminds construction personnel and mechanical equipment to stop construction immediately, guarantees the accuracy of pipeline early warning.

1. Name of the product in this design: Steering gear. 2. Purpose of this design: A steering mechanism used to control the direction of mechanical equipment. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model belongs to the technical field of hinge assemblies, and particularly relates to a hinge assembly with a lock hook, which comprises a fixed part and a rotating part, the rotating piece is rotationally connected with the front end of the fixed piece; a locking arm is rotationally connected to the fixed part, the rotating part is rotationally connected with a limiting connecting rod, and the locking arm is rotationally connected with the limiting connecting rod; a rotatable lock hook is arranged on the lock arm; when the rotating piece rotates to a first position, the lock hook hooks the first lock catch part; when the rotating piece rotates to a second position, the lock hook hooks the second lock catch part; and when the lock hook is pressed, the lock hook can be separated from the first lock catch part or the second lock catch part. According to the scheme, when the rotating part rotates to the first position or the second position, the hinge assembly can be limited through the limiting connecting rod, then position locking is conducted through the lock hook, the using stability of equipment where the hinge assembly is applied is improved, and the requirement for locking the rotating position in mechanical equipment such as an unmanned aerial vehicle and furniture is met.

1. Name of the product in this design: Bicycle tire. 2. Purpose of this design: This design is used to support the bicycle frame or other mechanical devices, buffer external impacts, and increase contact and friction with the road surface. 3. The key design feature of this product is the pattern on the tire surface. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The rear view is the same as the front view after being rotated 180 degrees, so the rear view is omitted; the top view and bottom view are the same as the front view, so the top view and bottom view are omitted.

The utility model belongs to the field of pharmaceutical mechanical equipment, and particularly relates to a filter cloth filtering installation structure of a discharging valve, which comprises a valve body, the valve body is provided with a feeding port, a discharging port and a valve cavity communicated with the feeding port and the discharging port, a valve core is arranged in the valve cavity, a filtering device is arranged on the valve core, and the filtering device is provided with a filter screen. The filtering device comprises a filtering supporting plate with a plurality of through holes and filtering cloth fixedly laid on the filtering supporting plate, the filtering supporting plate is fixedly connected with the valve element, a liquid discharging cavity is formed between the filtering supporting plate and the valve element, and the liquid discharging cavity is communicated with a liquid discharging channel. The utility model provides a filter cloth filtering and mounting structure of a discharge valve, which realizes filtering through a filter cloth filtering device in the discharge valve and meets the technical production requirements of corrosive materials or materials which are not allowed to be in contact with metal materials.

The invention discloses a digital twinborn intelligent monitoring platform and method for a small-particle-size vegetable precision seeder. The platform comprises a mechanical system, a detection module, a control module, a communication module and a digital twin module, and the mechanical system comprises a chassis mechanism, a seed metering mechanism and a soil covering mechanism; the detection module comprises speed detection, seeding condition detection and operation time detection, the detection module is carried on a mechanical system, for example, a speed detection sensor is carried on a frame near a tire shaft and is provided with a monitoring point, and a seeding condition detection sensor is placed at a seed falling opening; the control module comprises an STM32 single-chip microcomputer, and the STM32 single-chip microcomputer is connected with the sensor in the detection module and controls the sensor to detect various data. The communication module sends data detected by the detection module to the digital twin module; and the digital twin module visually presents the data and analyzes the health condition of the mechanical equipment through the data.

1. The name of the design product: oil pump (hydraulic overload protection device). 2. The use of the design product: for various mechanical equipment requiring overload protection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a pneumatic bird mechanical device, which relates to the technical field of bionic toys, and comprises a bird-simulating trunk part, a support body and a fan part, and a bird supporting shaft is arranged at the bottom of the bird-simulating trunk part. The two sides of the bird-imitating trunk part are each provided with a bird-imitating wing part, the bird-imitating wing parts are rotationally connected with the side wall of the bird-imitating trunk part, the fan part is rotationally connected with the tail end of the bird-imitating trunk part, the fan part can rotate when bearing the wind action, and a transmission assembly is further arranged on the support body; the transmission assembly can convert the rotating motion of the fan part into reciprocating swing motion of the bird-imitating wing part around the joint of the bird-imitating wing part and the bird-imitating trunk part. According to the device, the fan assembly is adopted to simultaneously bear power input and wind indicator functions, when wind power acts on the fan, the rotating speed is reduced and the torque is increased through the speed reducing mechanism, the crank arm rocker is driven to drive the main force shaft to move up and down, and finally the wings of the birds form bionic flying actions.

The present invention relates to an adhesive tape comprising at least one carrier that has a thickness of 20 to 250 μm, preferably 50 to 150 μm, and has at least one layer (i) based on preferably uncrosslinked thermoplastic polyurethane that has been produced by means of extrusion, wherein the polyurethane is based on aromatic polyisocyanate, such as aromatic diisocyanate in particular, or (ii) based on preferably uncrosslinked polyurethane that has been produced from a dispersion, wherein a pressure-sensitive adhesive layer is disposed on at least one side, preferably both sides, of the carrier. The invention also relates to processes for producing the adhesive tape and to the use thereof for bonding of components in electrical, electronic, optical or precision mechanical devices, such as, in particular, of windows or lenses in housings of precision mechanical, optical and / or electronic devices.

The utility model discloses a posture control device and mechanical equipment, and relates to the technical field of mechanical device.The posture control device comprises a first base, a driving device and a second base, the driving device comprises a joint actuator and a connecting assembly, the joint actuator comprises a first output piece, a second output piece and a third output piece, and the connecting assembly is connected with the first output piece. The connecting assembly comprises a first connecting piece, a second connecting piece and a supporting piece, the first connecting piece is in driving connection with the first output piece, the second connecting piece is in driving connection with the second output piece, the third output piece is in driving connection with the first base so that the joint actuator can be rotationally arranged on the first base, and the supporting piece is arranged on the joint actuator; the second base is movably arranged on the supporting piece and rotationally connected with the first connecting piece and the second connecting piece so as to adjust the posture of the second base on the supporting piece. The second base has multiple degrees of freedom, and the posture control device is simple in structure and easy to assemble.

The utility model relates to agricultural mechanical equipment for smashing and returning agricultural straw to a field, and belongs to the technical field of straw smashing and returning. Comprising a movable box body, a screening mechanism installed in the box body and used for screening out gravel in straw, a smashing mechanism installed in the box body and used for smashing the screened straw and a scattering mechanism installed in the box body and used for scattering the smashed clustered straw, and a discharging opening is formed in the bottom of one side of the box body; according to the straw smashing device, through driving of the telescopic mechanism, the screening mechanism can be driven to move, gravel in the straw is screened out before smashing, the gravel is not prone to entering the smashing mechanism to damage parts in the smashing mechanism, and the straw smashing device has the advantages that the smashing device is simple in structure, convenient to use and high in practicability. And the driving device can drive the scattering rod to rotate around the rotating rod in a reciprocating manner, so that clustered straws discharged from the discharging opening can be scattered, the straws can be uniformly dispersed into soil, and the device is convenient and practical.

The invention relates to the technical field of mining machinery equipment, and discloses an underground carry-scraper low-voltage wire harness conduction test system, which comprises a wire harness health management module, and the wire harness health management module comprises a reference generation unit which is used for injecting detection pulses and collecting responses in an initialization stage, and generating a test result; establishing a multi-dimensional health fingerprint reference library for storing reference electrical characteristics of the low-voltage wire harness in a health state; the online monitoring unit is used for continuously acquiring real-time electrical characteristic data of the wire harness during the operation period of the carry-scraper and synchronously acquiring working condition data of the carry-scraper; and the diagnostic analysis unit is used for carrying out comparison and correlation analysis on the real-time electrical characteristic data and the reference data in the reference library so as to output a health state evaluation result of the low-voltage wire harness. By constructing the multi-dimensional health fingerprint reference library, chronic and transient faults can be diagnosed and accurately positioned on line, predictive maintenance is realized, and the operation reliability of equipment is remarkably improved.

The application provides a damping mechanism which is connected with a first component and a second component in a mechanical device respectively, the second component has a connecting through hole, and the damping mechanism comprises a core shaft, an extrusion sleeve, an inner sleeve, an elastic body and a driving mechanism; the core shaft is arranged in the connecting through hole and connected with the first connecting component at one end; the extrusion sleeve is sleeved on the core shaft, the driving mechanism is connected with the extrusion sleeve, and the outer contour shape of the extrusion sleeve is a taper platform shape which is tapered towards the first component; the inner sleeve is sleeved on the extrusion sleeve, and the inner cavity shape of the inner sleeve is a taper platform shape which is tapered towards the first component; the elastic body is sleeved on the inner sleeve, and the outer wall is abutted against the inner wall of the connecting through hole. The damping mechanism can ensure that the damping component is uniformly stressed, and avoid that the fatigue performance of the damping component is reduced due to excessive local stress.

This invention relates to the field of fault diagnosis of mechanical equipment components, and discloses a method, system, medium, and device for fault diagnosis of wet friction components based on MLLM-PINN. The method includes: acquiring three types of basic data (temperature, vibration, and text) of the wet friction component, preprocessing them, and inputting them into an MLLM multimodal feature fusion model to form a high-dimensional fusion feature containing visual, dynamic, and semantic information; constructing a PINN physical constraint model consisting of five fully connected hidden layers using PINN, inputting the high-dimensional fusion feature into the model to output fault category, physical parameter deviation, and damage degree; using a hybrid loss function to perform cross-model collaborative optimization of the MLLM multimodal feature fusion model and the PINN physical constraint model, and optimizing the model parameters to obtain the trained and optimized MLLM multimodal feature fusion model and PINN physical constraint model; and generating a structured diagnostic report for the wet friction component based on the physical prediction results of PINN and the semantic reasoning capability of a large language model.

The utility model relates to the field of mechanical equipment maintenance auxiliary tools, in particular to an oil receiving barrel. The utility model relates to an oil receiving barrel, which comprises an oil barrel, an oil outlet and a connecting hole, the first flow guide pipe is mounted in the connecting hole in a sliding manner; the lower end of the first flow guide pipe is detachably connected with the connecting hole; the diameter of the upper end of the first flow guide pipe is smaller than that of the lower end of the first flow guide pipe. The second flow guide pipe is mounted in the first flow guide pipe in a sliding manner; the diameter of the upper end of the second flow guide pipe is smaller than that of the lower end of the second flow guide pipe. The diameter of the upper end of the second flow guide pipe is smaller than that of the upper end of the first flow guide pipe, and the diameter of the lower end of the second flow guide pipe is larger than that of the upper end of the first flow guide pipe. And the upper end part of the second flow guide pipe is provided with an oil gathering port which is fixedly connected with the second flow guide pipe.

The utility model relates to the technical field of pharmaceutical mechanical equipment, and discloses a high-speed tablet press which comprises a mounting shell, a dust collection motor is fixedly mounted on the upper surface of the mounting shell, and a connecting pipe is fixedly mounted at the input end of the dust collection motor. According to the high-speed tablet press, by arranging a connecting pipe, a dust collection head, an elastic steel sheet, a balancing weight and other components and through cooperation of a dust collection motor, the connecting pipe and the dust collection head, powder existing in a working area after discharging can be collected through the dust collection head and stored through a dust collection box, and powder waste is prevented; a double-shaft motor drives a corresponding balancing weight to rotate, then an elastic steel sheet can vibrate, a hose shakes, powder can be prevented from being accumulated and blocked in the hose, a hydraulic rod is arranged to be fixed to a connecting plate, a pressure sensor is installed on the inner wall of a limiting disc, and pressure can be monitored in real time through the pressure sensor; the device is used for adjusting the pressure of the hydraulic rod, ensuring the consistency and quality of tablets and improving the production efficiency.

The utility model relates to the technical field of mechanical devices, and discloses an angle adjusting structure and an antenna device, and the angle adjusting structure comprises a connecting seat which is used for fixing the angle adjusting structure on a bearing body, and a first angle adjusting unit which is connected with the connecting seat and is exposed out of the connecting seat at one side of the connecting seat which is used for deviating from the bearing body, the second angle adjusting unit is connected with one end, deviating from the bearing body, of the first angle adjusting unit and is exposed out of the first angle adjusting unit on one side, deviating from the bearing body, of the first angle adjusting unit; the mounting seat is fixed at one end, deviating from the connecting seat, of the second angle adjusting unit; the surface of the mounting seat deviating from the connecting seat is used for mounting an external structure; the first angle adjusting unit is used for driving the external structure to rotate around a first axis, and the second angle adjusting unit is used for driving the external structure to rotate around a second axis.

The application discloses a pose detection system, a mechanical device and a pose detection method. The pose detection system comprises a laser emitter, a detection camera and an image processing system. The laser emitter can emit a cross circular light spot to a detection plane. The cross circular light spot comprises a circular light spot and a cross line light spot with the same center. The detection camera is used for acquiring a light spot image of the cross circular light spot irradiated on the detection plane. The image processing system is in signal connection with the detection camera, so as to obtain the pose of the laser emitter according to the light spot image. The laser emitter can move relative to the detection camera. In use, the laser emitter is installed on an executing mechanism of the mechanical device, and the detection camera is installed on a rack of the mechanical device. Since the laser emitter is relatively static with the executing mechanism, the pose of the executing mechanism can be obtained by obtaining the pose of the laser emitter.

The present invention provides a fault detection method and system based on an adapter tool shank and relates to the technical field of fault diagnosis of mechanical equipment. The method includes: obtaining a displacement signal of the adapter tool shank; based on the displacement signal, determining a feed rate; based on the feed rate, building a cutting force model; based on the cutting force model, building a disturbance model; building an observer model; based on the disturbance model and the observer model, determining a cutting force error; based on the observer model, determining a wear rate of the adapter tool shank; combining the cutting force error and the wear rate to perform fault detection; and based on a fault detection result, judging whether the adapter tool shank is faulted. The present invention improves the efficiency of fault diagnosis, reduces the maintenance cost, and improves the production efficiency.

The utility model belongs to mechanical equipment technical field, concretely relates to an automatic candle and candle system, the automatic candle, include: candle body, high -voltage generator, metal pipe and insulating heat -proof pipe, the high -voltage generator is located in the candle body, the high -voltage generator is equipped with first electrode and second electrode, the metal pipe is located in the candle body, the top end of metal pipe protrudes the top of candle body, the metal pipe is used as gas supply line and its bottom end is connected with the first electrode of high -voltage generator, the insulating heat -proof pipe is sleeved in the metal pipe outside, the second electrode of high -voltage generator is set up in the outside of insulating heat -proof pipe, the utility model discloses through high -voltage generator, metal pipe and so on structure design, has realized the automatic ignition function of candle, need not manual use lighter or match, has improved the convenience and security of use.

This invention belongs to the technical field of fault diagnosis for rotating machinery and discloses a method for constructing a rolling bearing fault diagnosis model, its application, and electronic equipment. The method includes: collecting vibration signals of the rolling bearing under different health conditions; for each health condition, constructing an objective function based on the envelope entropy of the IMF components obtained from VMD decomposition to optimize and obtain optimal VMD parameters; performing vibration signal decomposition based on the optimal VMD parameters; constructing a feature vector based on the energy entropy of the IMF components obtained from the decomposition under the optimal VMD parameters; and obtaining a fault diagnosis model through training and optimization using the feature vector as input and the fault type as output. This invention determines the optimal VMD parameters for different bearing fault types through an optimization algorithm. K , α This enables adaptive and high-fidelity decomposition of vibration signals, ensuring the effective separation of weak fault features and improving diagnostic accuracy.

This invention provides a fully automated assembly equipment for shaft components in storage boxes, relating to the field of mechanical equipment technology. It includes a pin press-fitting power component and a pin docking moving component. The pin picking unit picks up and holds the pin to be press-fitted, and under the indirect drive of the pin press-fitting power component, transports the pin to the press-fitting station. The output direction of the pin press-fitting power component is perpendicular to the output direction of the pin docking moving component. The advantage of this invention is that, through the coordinated design of the storage box connector hole position detection structure and the integrated mechanism for the directional transport and press-fitting of the storage box pin, automation is achieved from hole position detection to pin press-fitting. Detection is performed using the structural differences between the front and back of the blind holes in the storage box connector, providing qualified product input for subsequent press-fitting processes. The entire process of pin picking, handover, alignment, and press-fitting is integrated into one unit, avoiding positional deviations and cycle time losses caused by intermediate transfers.

The invention belongs to the technical field of filling equipment, and discloses intelligent water-based anti-corrosion paint filling equipment which comprises a workbench, an electric sliding rail is fixedly connected to the outer wall of the top end of the workbench, a fixing rod is slidably connected to the inner wall of the electric sliding rail, and a filling module is arranged on the outer wall of the top end of the workbench. The outer wall of the filling module is fixedly connected with a connecting pipe, and the fixing mechanism is arranged on the outer wall of the fixing rod; a using method of the intelligent filling equipment for the water-based anti-corrosion paint comprises the following steps that S1, according to the diameter of a filling barrel to be filled with the water-based anti-corrosion paint, a shifting block on the outer wall of a protruding block is shifted upwards; through the cooperation of structures such as the moving block and the guide block, the arrangement of double stations does not need to place the other group of filling barrels for filling after one group of filling barrels are taken down, and does not need to clamp the filling barrels under the driving of more mechanical equipment, so that the structure is simple, the efficiency is improved, and the equipment cost is also reduced.