19results about How to "Avoid disturbing influence" patented technology

The utility model relates to the technical field of building structure engineering, in particular to a steel beam column joint structure suitable for steel beams with different section heights. Comprising steel columns and steel beams. Each flange connecting piece comprises a first connecting part in bolted connection with a steel beam flange and a second connecting part in bolted connection with a steel column; the first connecting part and the second connecting part are vertically intersected to form a T-shaped bending component; the web connecting piece comprises a third connecting part in bolted connection with a steel beam web and a fourth connecting part in bolted connection with a steel column; the third connecting part and the fourth connecting part are vertically intersected to form a bent component; the corner connecting pieces are used for fixedly connecting the adjacent second connecting parts which are located on the different sides of the steel column and located at the different section heights into a whole in the horizontal direction. The steel beam column joint structure is good in overall stress, extremely high in stability and easy to install and assemble.

The application discloses an automatic cleaning device for ship anchor chain, which comprises a main frame and a self-collection cleaning mechanism. A clamping assembly for positioning and fixing is fixedly installed on the lower section of the longitudinal guide rod in the auxiliary frame, and a clamping assembly for positioning and fixing is slidably connected to the upper section of the longitudinal guide rod, and the two clamping assemblies are driven to move on the anchor chain in a peristaltic mode. Angle-adjustable screw propulsion assemblies are installed on the left and right frame bodies of the annular carrier in the clamping assembly, and are driven to move underwater. The self-collection cleaning mechanism is movably arranged in the frame of the main frame, and is rotated to clean the anchor chain. The automatic cleaning device for ship anchor chain is provided in a closed mode, so that the cleaning objects are prevented from being dispersed in seawater, the cleaning objects are concentrated and collected, the cleaned anchor chain is prevented from being newly polluted, and the cleaning device itself is prevented from being interfered.

An intelligent C-shaped thickness measurement scanning frame relates to the technical field of scanning frames and comprises a scanning electromagnetic sliding rail, a driving motor and a control cabinet, two L-shaped electromagnetic sliding blocks are slidably mounted in the scanning electromagnetic sliding rail, and the upper end faces of the two L-shaped electromagnetic sliding blocks are jointly and fixedly connected with a C-shaped support. Thickness sensors are installed on the upper side wall and the lower side wall of an opening cavity of the C-shaped support respectively, two fixing blocks are fixedly installed on the right end face of the C-shaped support respectively, and the two fixing blocks are symmetrically distributed up and down relative to the center line of the C-shaped support. According to the utility model, dust and impurities attached to the surface of a detected object are all removed during detection, and meanwhile, the air pipe piece continuously blows air to blow off the dust and impurities brushed by the roller brush to ensure that the measuring surface of the detected object is clean, so that the interference influence of the dust and impurities on the measuring precision is avoided; meanwhile, the design size is small, the requirement for installation positions of different customer spaces can be met, and it is guaranteed that the device can be installed and used in a limited space.

The utility model relates to the technical field of vibration damping devices, and discloses an electromagnetic vibration damper insulating shell with good sealing performance, which comprises an insulating shell arranged outside a vibration damper body, two ends of the vibration damper body are connected with a fixed shaft body and a telescopic shaft body, the insulating shell comprises a bottom shell and a top shell, the bottom shell is sleeved with a bottom shell of the shock absorber body, the top shell is sleeved with a top shell of the shock absorber body, shaft holes are formed in the ends, away from each other, of the bottom shell and the top shell in a penetrating mode, and the two shaft holes are in sliding connection with the fixed shaft body and the telescopic shaft body correspondingly. According to the electromagnetic shock absorber insulating shell with the good sealing performance, the electromagnetic shock absorber body is sleeved with the insulating shell body made of fiber reinforced plastics, external electromagnetic interference can be blocked, the interference influence of external electromagnetism on electromagnetic induction of the electromagnetic shock absorber is avoided, and the electromagnetic shock absorber is more stable in use.

The invention provides a track operation and maintenance full-period loading and ballast bed maintenance simulation test device and test method, and belongs to the technical field of railway maintenance. Comprising a base, a loading assembly, a maintenance assembly and a ballast bed box. A mounting frame is arranged on the base and comprises a top hanging frame and a plurality of stand columns. The loading assembly comprises a multi-channel hydraulic cylinder and a rigid cross beam, the multi-channel hydraulic cylinder is connected to the top hanging frame, and the rigid cross beam is connected with the telescopic end of the multi-channel hydraulic cylinder. The maintenance assembly and the loading assembly are arranged in a spaced mode. The maintenance assembly comprises a ballast blowing device, a tamping clamp and a lifting device. Grouped lugs are arranged at the top of the side wall of the ballast bed box, track limiting grooves are formed in the lugs, the ballast bed box is in sliding connection with the base and horizontally slides between the loading assembly and the maintenance assembly, and a jack is arranged below the maintenance assembly. The on-site loading and maintenance cycle test of the ballast track can be simulated, test data can be obtained, and technical reference is provided for maintenance and long-term performance prediction of the ballast track.

The utility model belongs to the technical field of battery clamp assembly and disassembly, and particularly relates to a battery clamp tool assembly and disassembly mechanism. The device comprises a case, wherein a tool placing assembly, a pressure applying mechanism for positioning a clamp and monitoring data and a loading and unloading device for loading and unloading bolts are arranged in an operation room of the case; the tool placing assembly comprises a base for placing the clamp and a limiting piece for limiting a battery cell in the clamp; the pressure applying mechanism comprises a pressure applying assembly and a pressure sensor installed below the pressure applying assembly. The loading and unloading device comprises a loading and unloading assembly and a moving assembly driving the loading and unloading assembly to move. By designing a multi-motor and multi-cylinder mechanism mode, different fixture sizes and positions can be met, simultaneous rotation of multiple shafts can be realized, the torque of the motors can be effectively set, manual operation can be replaced from multiple capabilities, and the operation working efficiency of fixture installation is greatly improved.

The present invention discloses a MBD model retrieval method and device based on a graph neural network, the method comprising the following steps: step S1, for a three-dimensional MBD model to be retrieved, establishing an MBD-based attribute adjacency graph to fully express product semantic information, wherein the product semantic information includes geometric and non-geometric information of the MBD model; step S2, using a graph neural network to embed the established attribute adjacency graph into a continuous vector space, according to a specific distance metric, and introducing an attention mechanism to adaptively identify more important feature information, performing similarity matching and sorting in the continuous vector space, and taking the model with the highest similarity as the final retrieval result of the three-dimensional MBD model to be retrieved; step S3, using a series of MBD model samples as a training data set to train the graph neural network, so that the trained graph neural network can achieve fast and accurate retrieval of MBD models.

The invention relates to a nozzle head for producing filaments, in particular from a polymer melt made of thermoplastic. The nozzle head is configured as a meltblown blow head and has a plurality of nozzle openings. A portion of the nozzle openings is configured as polymer discharge openings and a portion or another portion of the nozzle openings is configured as blowing air discharge openings. The polymer discharge openings and the blowing air discharge openings are arranged in a regular pattern and / or irregularly spaced apart from one another.

The invention relates to a stable sleeve connection structure of a cavitation tube of a liquid rocket engine, which belongs to the field of design of cavitation tubes of liquid rocket engines; the structure comprises a reducing pipeline, a cavitation tube, bolts, a fixed shell, a cavitation tube fixing structure and a sealing gasket; the fixed shell is provided with a reducing channel arranged axially and horizontally; the reducing pipeline is coaxially connected with the reducing channel; the reducing pipeline and the fixed shell are fixedly connected by bolts; the cavitation tube is coaxially arranged in the inner cavity of the reducing pipeline, and the cavitation tube extends into the reducing channel of the fixed shell; the cavitation tube is axially limited by a step of the reducing channel; the sealing gasket is sleeved on the outer wall of one end of the cavitation tube axially extending into the fixed shell; the cavitation tube fixing structure is arranged on the outer wall of the sealing gasket to realize the fixing of the cavitation tube and the fixed shell; the stable sleeve connection structure of the cavitation tube of the invention does not need to change the cavitation tube structure, and the processing and assembly operations are simple and feasible. In addition, the sleeve connection structure and structural optimization solve the problems of assembly layout and frequency coupling.

The invention discloses a UHPC-NC test piece, a machining mold, a machining method and application, and belongs to the technical field of building material performance testing. In order to solve the problems that at present, the UHPC-NC interface bonding performance is still subjected to static mechanical property research, and the interface form influences the repairing effect, the mold comprises a base, an assembly type cylinder, an upper cover and an interface partition plate, a round boss is arranged in the middle of the base, the assembly type cylinder is arranged on the periphery of the round boss, and the upper cover is arranged on the periphery of the round boss. The interface partition plate is vertically inserted in the middle of the split mounting type cylinder, and the upper cover is buckled on the top of the split mounting type cylinder. UHPC-NC test pieces with different interface forms are manufactured through the mold, then the UHPC-NC test pieces with different interface forms are subjected to freeze-thaw cycle erosion tests, the dynamic mechanical properties of the UHPC-NC test pieces under freeze-thaw damage are tested, the dynamic splitting tensile strength of the UHPC-NC test pieces is obtained through calculation, and a theoretical basis and technical support are provided for application of the UHPC-NC composite structure in actual engineering.

This utility model relates to a novel health-care oxygen chamber, belonging to the technical field of health-care oxygen chamber circuit structure. The health-care oxygen chamber includes a chamber body, a control cabinet, and a power supply box. The chamber body is equipped with an inner screen, an outer screen, a seat, LEDs, a red light, and a graphene board. The control cabinet is electrically connected to the inner screen, outer screen, and graphene board of the chamber body via circuits. The power supply box is electrically connected to the seat, LEDs, and red light of the chamber body. This utility model achieves centralized aggregation and control of various functional modules of the oxygen chamber through a main control board. Based on the differences in power supply methods at different locations on the main control board, it divides the chamber into high-voltage and low-voltage operating areas, realizing comprehensive management and control of the circuits of various functional modules of the oxygen chamber and avoiding interference between different module circuits.

This application relates to a backwashing system and an automatic backwashing filter device. The backwashing system includes a first backwashing pipeline for conveying a first backwashing medium, connected to the backwashing inlet of the filter; a second backwashing pipeline for conveying a second backwashing medium, also connected to the backwashing inlet of the filter; and a controller for controlling the first and second backwashing pipelines to perform a backwashing process. The backwashing process includes at least one draining process, which involves controlling the input of the first backwashing medium into the first backwashing pipeline to drain the second backwashing medium. The first backwashing medium and the working medium are in a neutral relationship, while the second backwashing medium and the working medium are in an interfering relationship. The backwashing system of this application improves the problem of interference between the backwashing medium and the working medium in existing technologies.

The invention relates to the technical field of radio positioning detection, in particular to a self-adaptive multi-band radio wave identification method, which comprises the following steps of: monitoring data; judging a multi-target approaching state; judging a target shielding state; adjusting a frequency band to cope with interference; and correcting the threshold value and giving an alarm. According to the method, the target identification precision of the low-altitude aircraft can be effectively improved in a complex electromagnetic environment by combining the comprehensive analysis of the real-time reflection time delay, the reflection cross section and the interference ratio, the problem that a single frequency band is liable to be interfered is avoided by dynamically adjusting the frequency band, the identification capability of a shielded target is enhanced, and the identification accuracy of the low-altitude aircraft is improved. It is ensured that the targets can still be accurately detected in a multi-target approaching state and under the complex shielding condition, and the influence of an interference source on a recognition system can be effectively avoided based on continuous interference mode recognition and frequency band optimization of real-time data. The problems of poor real-time performance and low accuracy of signal identification caused by excessive signal processing staticity and calculation resource consumption are effectively solved.

The invention relates to an image recognition method and system for cataract. The method comprises the following steps: acquiring an eye examination medical image of a patient; inputting the eye examination medical image into a cataract image recognition model to obtain a cataract diagnosis result; wherein the cataract image recognition model is obtained by training a deep learning model based on a plurality of sample eye examination medical images and corresponding annotation data; moreover, the training process of the deep learning model comprises the steps: extracting a crystalline lens region image in the sample eye examination medical image, extracting a plurality of different types of image features from the crystalline lens region image, and fusing and outputting cataract type information based on the plurality of different types of image features. And updating the deep learning model based on the difference between the cataract type information and the type label in the corresponding annotation data, and ending the training until the loss value of the loss function of the deep learning model meets the convergence condition.

The invention relates to a multifunctional multi-physical field combustion chamber outlet measuring device, and belongs to the technical field of aero-engine combustion chambers. The device comprises a measurement section casing and multiple types of measurement assemblies installed on the measurement section casing. The measuring section casing adopts a collaborative partition structure of an equal straight section and a sudden expansion section, the equal straight section is provided with a static pressure / dynamic pressure guide assembly, a TDLAS assembly and a high-frequency thermocouple in a focusing manner, and the sudden expansion section is provided with a fixed composite rake assembly or a movable multi-point thermocouple rake assembly through a switchable process window. The detection end of each component corresponds to the same measurement area in the equal straight section, so that the pressure, temperature distribution, component concentration and transient pulsation information of the outlet of the combustion chamber can be synchronously obtained in the same area in a single test. According to the method, the problems of layout conflict and data space-time inconsistency when a multi-heterogeneous measurement technology is integrated are solved, the method has the capabilities of steady-state field surveying and mapping and dynamic process capturing, data cross verification can be realized in a contact and non-contact measurement mode, and the measurement efficiency, the data quality and the system reliability are remarkably improved.

A railway freight train container corner fitting side plane integrated machining tool belongs to the field of machining equipment and comprises a bottom plate, a top plate, a side vertical plate, a station plate, a hydraulic cylinder, a positioning block, a connecting plate and a pressing plate, the bottom plate, the top plate and the side vertical plate are connected to form a supporting structure frame, a retraction area is arranged in the middle of the side vertical plate, and the station plate is installed on the bottom plate. The hydraulic cylinder is installed on the top plate, the positioning block is installed on the station plate, the connecting plate is connected to a piston rod of the hydraulic cylinder, the ball connecting rod is installed at the lower end of the connecting plate, the hanging head is arranged at the lower end of the ball connecting rod, the pressing plate is hung on the hanging head, and the lower end face of the hanging head is an outer convex spherical surface. According to the machining tool, a plurality of workpiece mounting stations can be integrated to machine a plurality of cast corner fittings at the same time, the cast corner fittings can be mechanically clamped in a three-dimensional positioning mode, the machining efficiency and the machining precision of the side planes of the cast corner fittings can be improved, the labor intensity can be relieved, and the machining cost can be reduced.

The application discloses a magnetic fluid sealed shaft assembly, a shielded motor and a shielded pump. The shaft assembly comprises a shell provided with a containing cavity, a fixed structure arranged on the inner wall of the containing cavity, a rotating shaft supported and arranged in the containing cavity, a magnetic fluid sealing device arranged in the containing cavity, an inner sleeve sealingly and fixedly sleeved on the rotating shaft, a space reserved in the shell for the magnetic fluid sealing device to jump with the rotating shaft and / or adjust the installation angle and position, and an elastic member sealingly installed on the outer sleeve of the magnetic fluid sealing device and sealingly connected with the fixed structure. The structure compensates for the influence of insufficient precision of the flatness of the fixed structure, the perpendicularity of the rotating shaft and the fixed structure, the coaxiality and the axial and radial jumping of the rotating shaft by the elastic installation of the magnetic fluid sealing device, eliminates the additional axial force, radial force, external torsional force and static indeterminate force suffered by the bearing in the magnetic fluid sealing device during work, and enables the magnetic fluid sealing device to be applied to pump products and the like, so as to ensure the sealing effect of the pump products and the like.

The invention discloses a motor control method and system for a treadmill, and particularly relates to the field of fitness equipment. Comprising the steps of S1, monitoring the safety state of the treadmill, S2, detecting electromagnetic interference, S3, obtaining multi-source data of a target motor, S4, compensating interference data, S5, calculating adaptive torque, S6, adjusting the speed of the target treadmill, S7, calculating recyclable energy, S8, adjusting the motion mode of the treadmill and S9, outputting a motor control report of the target treadmill. According to the motor control method and system for the treadmill, the problem that operation parameters of a motor are affected by interference is solved by obtaining an interference compensation model and presetting an interference compensation rule; a torque calculation model is obtained based on multi-source compensation data, and the problem that the load of a running belt is unbalanced when users with different weights face is solved; by judging the power generation potential of the treadmill and controlling real-time adjustment of the circuit, the user cost caused by long-time use is reduced.

The utility model discloses an adjusting device based on an intelligent networking automobile radar test. The adjusting device comprises a carrier, an angle adjuster and a stroke seat. The angle adjuster is fixed on the carrier, a travel plate is mounted at the movable end of the angle adjuster, a first guide rail is arranged on the travel plate, the section contour of the travel seat is matched with the section contour of an inner cavity of the first guide rail, and the travel seat is slidably arranged in the first guide rail of the travel plate; a lead screw is arranged in the first guide rail, and the stroke seat sleeves the lead screw; a bearing plate is arranged on the stroke base, and a clamping device is arranged on one side of the stroke plate and installed on the bearing plate. The clamping device is used for installing an automobile radar, the side wall of the first guide rail is provided with an opening for the bearing plate to penetrate out, the angle regulator is used for driving the stroke plate to rotate and form a test included angle with the carrier, and the stroke seat is used for driving the clamping device to move to a test position on the first guide rail; the problem that the radar is not favorable for resetting and adjusting to the same position when being repeatedly tested on a car model is solved.