4911results about "Welding apparatus" patented technology

The invention discloses a multi-mechanical-arm space-time synchronization control method for coiled pipe welding, and belongs to the technical field of automation control, and the method comprises the steps: in a primary laser and TIG hybrid welding execution stage, carrying out real-time data acquisition on a welding area of a workpiece, carrying out real-time deviation detection, and once real-time welding deviation is detected, carrying out time-space synchronization on the welding area of the workpiece; a local correction mechanism is triggered immediately, and deviation is prevented from being accumulated in the single welding process; after one-time welding is completed, the workpiece enters a transition area, global contour reconstruction is conducted on a welded section of the workpiece through three-dimensional scanning equipment, global deviation recognition is conducted, and unprocessed hysteresis deformation and accumulative errors are covered and corrected in real time; on the basis of the analysis result of the global deviation recognition, double correction is conducted on secondary welding, and cooperative control over space track correction and technological parameter adaptation is achieved; and after secondary welding is completed, the correction effect is evaluated through a double-layer evaluation mechanism, and the stability of the correction process is ensured.

The invention provides an intelligent real-time detection method and system for PCCP welding quality, and relates to the technical field of online detection and intelligent evaluation of pipeline welding quality through machine learning. Light energy data and multi-light-source images of a spiral weld pool are collected, exposure parameters are dynamically adjusted through the energy difference of visible light near-infrared bands, and the real-time detection of the PCCP welding quality is achieved. Inhibiting strong light interference and generating a weld surface image; a stress concentration area is positioned by scanning a welding seam thermal deformation area and combining speckle pattern change, sound frequency change and the elastic characteristic of the thin-wall steel cylinder; inputting the surface image and the deformation data into a space-time convolutional neural network, fusing light energy change, image details and spatial features to construct a weld joint space structure diagram, and adaptively correcting the position of a sensor; and comparing the sinking depth of the three-dimensional point cloud reconstruction, analyzing the correlation between the sinking degree and the stress, and generating a probability thermodynamic diagram to output the pressure-bearing failure risk level, so that the probabilistic early warning of the pressure-bearing failure risk can be realized.

The invention relates to the technical field of artificial intelligence welding, and discloses an automatic welding robot based on artificial intelligence and a welding system thereof. The system comprises a welding feature acquisition module, a process parameter generation module, a real-time regulation and control module and a motion planning module. The welding characteristic acquisition module is used for acquiring three-dimensional contour data, material component information and welding seam geometric parameters of a workpiece to be welded, and generating a welding characteristic spectrum through characteristic fusion; a process parameter generation module retrieves a matching template from a welding knowledge base according to the parameters, and outputs a reference welding process parameter combination in combination with an environment temperature and humidity compensation coefficient; the real-time regulation and control module dynamically corrects the reference parameters to generate an optimization instruction according to the molten pool form, thermal radiation distribution and electric arc voiceprint characteristics in the welding process; and the motion planning module calculates a motion track, attitude parameters and a speed curve of the welding execution mechanism according to the optimization instruction to form a robot control instruction set. The system can improve the intelligent level of welding, guarantees stable welding quality, and is suitable for welding scenes of multiple manufacturing industries.

The invention provides a welding obstacle avoidance path planning method and system based on artificial intelligence, and relates to the technical field of data processing, and the method comprises the steps: carrying out the penetration depth detection of a dynamic convex hull body and a discrete space sampling set, and generating collision probability density distribution; the collision probability density distribution is subjected to quality evaluation, welding gun posture constraint and a kinematics error transfer chain are fused, and a welding quality deviation functional is generated; analyzing high-deviation nodes in the welding quality deviation functional, and executing local tangent plane projection on the associated spatial sampling subsets to obtain pose compensation parameters; and the pose compensation parameter and the joint space motion primitive sequence are input into a kinematics inverse solution module, and an optimized welding gun motion parameter set is generated through geodesic line construction and parameterized spline interpolation. The welding efficiency and the quality target are improved, and the automation level of the whole welding operation is improved.

The invention discloses a body-in-white welding seam recognition and automatic welding method based on a machine vision technology, particularly relates to the technical field of computer vision and image processing, and is used for solving the problem of welding seam track recognition accuracy caused by insufficient processing capability of an existing three-dimensional vision recognition method on incomplete and uncertain point cloud data. Through the steps of multi-view point cloud acquisition and registration, probabilistic confidence evaluation, region growth of track continuity constraint, multi-track fusion optimization and the like, accurate identification of a body-in-white welding seam track under a complex working condition is realized; firstly, multi-view point cloud data are obtained, probabilistic registration is carried out to generate a confidence evaluation result, then candidate tracks are generated based on confidence weighting and semantic constraint, finally, an optimal track is generated through intelligent optimization and converted into a welding instruction which can be executed by a robot, and the accuracy and robustness of weld joint recognition are effectively improved.

Provided in the present disclosure are a welding quality test method, apparatus and system, and a medium and a program. The test method comprises: receiving a plurality of groups of welding data collected by a plurality of sensors during welding; pre-processing the plurality of groups of welding data, so as to obtain a plurality of key features; inputting the plurality of key features into a test model, such that the test model determines, by means of a knowledge graph, whether there is a welding defect; when it is determined that there is a welding defect, outputting an identification result for indicating the presence of the welding defect; in response to the welding defect in the identification result belonging to a new welding defect type, adding new nodes into the knowledge graph, wherein the new nodes comprise a plurality of new welding process parameter nodes, which correspond to the plurality of key features, and a new welding defect node; and on the basis of the plurality of groups of welding data, establishing an association relationship between the plurality of new welding process parameter nodes and the new welding defect node.

The invention belongs to the technical field of engine nacelle part production, and particularly relates to an intelligent welding system and method for an engine nacelle combined type air inlet fairing. An inner spoiler moving groove and an outer spoiler moving groove are machined in the air inlet duct casting blank borne by the air inlet duct positioning assembly through the inner cutting assembly and the outer cutting assembly correspondingly, and the air inlet duct casting blank is formed into an air inlet duct component; a first clamping feeding assembly, a second clamping feeding assembly, a third clamping feeding assembly and a fourth clamping feeding assembly are used for feeding an inner reinforcing part, a heating part, a noise reduction and sound absorption part preassembled with a spoiler assembly and an annular cover plate into a cavity of the air inlet channel component, and the fed parts are welded and fixed into the cavity of the air inlet channel component through a welding assembly; in this way, intelligent welding and assembling operation of the combined air inlet fairing can be achieved, and the combined air inlet fairing has the advantages of being high in structural strength, good in noise reduction and sound absorption effect and capable of achieving automatic deicing of the lip and air inlet distortion control.

The invention discloses a rice machine steel frame automatic welding method based on machine vision. The rice machine steel frame automatic welding method comprises the steps that S1, original image data are obtained; s2, performing denoising and gray scale standardization processing on the original image data to generate an enhanced image; s3, generating a weld joint candidate region image, a weld joint structure description vector and a stress weighted region image based on the three-dimensional CAD assembly model and the enhanced image; s4, a welding seam track generation model is constructed through the multi-mode pruning attention network, and a continuous three-dimensional welding track is generated; s5, dynamic feasibility verification and welding gun posture planning are carried out on the continuous three-dimensional welding track; s6, discretizing the verified three-dimensional welding track to generate a discrete track point sequence; s7, the discrete track point sequence is bound with welding parameters, and a linkage execution instruction set is generated; and S8, the linkage execution instruction set is sent to a welding control unit, real-time welding state data are collected, and closed-loop control over the welding process is completed. According to the invention, the executability and stability of the welding path are enhanced.

The invention relates to the technical field of industrial CT, discloses an automatic light beam centering method and system based on industrial CT, and aims at solving the technical defects that in the welding process, due to thermal deformation, the centering precision of a light beam and a welding seam is low, and the reliability is poor. The method comprises the steps that before welding, three-dimensional CT volume data of a workpiece to be welded are obtained to generate a nominal welding seam trajectory; establishing a thermal-mechanical coupling finite element analysis model, and simulating a welding process to generate a predicted thermal teratogenic field map; superimposing the predicted thermal teratogenesis to a nominal trajectory to generate a dynamic welding trajectory; in the welding process, a laser contour measurement sensor is driven to collect three-dimensional contour data of a welding seam area in real time and extract the actual welding seam center position; and establishing a Kalman filtering state observer. By the adoption of the technical scheme, continuous and high-precision tracking of the center position of the welding seam can be achieved, the influence of thermal teratogenesis is overcome, and the welding quality and the yield of complex structural parts are remarkably improved.

The invention provides an intelligent pipeline welding method and system based on data decision, and relates to the technical field of intelligent pipeline welding.The intelligent pipeline welding method comprises the steps that a welding request is responded, a groove image of a to-be-welded pipeline is obtained through an active visual sensor, groove morphology characteristic parameters of the to-be-welded pipeline are determined based on the groove image, and the to-be-welded pipeline is welded according to the groove morphology characteristic parameters. Based on the groove morphology characteristic parameters, corresponding basic layer channel arrangement rules and reference process parameters are determined from a preset layer channel arrangement database, a welding process scheme matched with the current groove is generated in combination with the groove morphology characteristic parameters, and the current groove is welded on the basis of the welding process scheme. And the welding operation is executed in the groove of the to-be-welded pipeline, the technical problems that in the prior art, the global planning capacity is deficient, the deviation correction strategy is locally lagged, and the whole-process accurate control is insufficient are solved, and the effect of improving the stability and reliability of the welding quality of the pipeline is achieved.

The invention provides a teaching-free welding robot dynamic energy-saving path planning method and system, and relates to the technical field of industrial robos.The method comprises the steps that 1, a workpiece is scanned through a laser vision device, weld joint coordinates, obstacle information and workpiece thermal deformation data are obtained, weld joint feature points are extracted, and the weld joint feature points are obtained; establishing a mapping relation between a workpiece coordinate system and a robot base coordinate system; step 2, based on the mapping relationship, in combination with a thermal deformation prediction mechanism and sensor feedback data, implanting a dynamic response node in the initial path, calculating path point offset by using the feedback data, and generating an anti-offset path; and step 3, aiming at the anti-offset path, constructing a multi-dimensional collaborative evaluation mechanism, and carrying out synchronous adjustment and comprehensive balance on the path length, the energy consumption of the whole welding process and the welding quality parameters so as to obtain a multi-dimensional collaborative evaluation result. Weld joint deformation, clamp offset and obstacle displacement are sensed in real time, the path is dynamically planned, and the flexibility of path planning is improved.

This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, that provide for welding techniques for manufacturing robots, such multipass welding techniques for welding robots. For example, the welding techniques may enable generation of weld instructions based on a welding fill plan. The instructions may be generated based on a bead model or a table that indicates a wire feed speed, a travel speed, or a voltage. As another example, the techniques may enable generation of weld instructions based on the one or more dimensions of a seam. As another example, the techniques may enable generation of a joint model of a cross-section of a seam to be welded. The joint model may be generated based on a combination of a plurality of feature components to generate the joint model of the seam. Other aspects and features are also claimed and described.

The invention relates to a welding pose track generation method of a workpiece fillet weld, a medium and equipment. The method comprises the following steps: acquiring a two-dimensional workpiece weld point; performing three-dimensional reconstruction on the two-dimensional workpiece welding seam points to obtain a three-dimensional workpiece welding seam point cloud; a plurality of geometric equations in the three-dimensional workpiece welding seam point cloud are extracted, track regeneration is conducted according to the geometric equations, and an initial welding track and key welding seam point coordinates are obtained; and attitude mapping is conducted according to the prior welding attitude and the key welding seam point coordinates, interpolation calculation is conducted according to the initial welding track, and a final welding pose track is obtained. The problems that in the prior art, the actual space pose of a workpiece cannot be sensed online, the three-dimensional contour of a fillet weld cannot be automatically recognized, and the motion trail of a robot cannot be generated in real time are solved.

The invention is suitable for the technical field of welding, and provides a tower drum flange welding system based on a wind driven generator, which comprises a welding assembly, a positioning assembly is in sliding fit with the welding assembly, and the welding assembly comprises a mounting piece, a welding piece fixedly connected to the mounting piece and a tower drum supporting piece fixedly mounted on the mounting piece. The positioning assembly comprises a flange piece and two side supporting pieces, the flange piece is arranged on the installation piece in a sliding fit mode, and the two side supporting pieces are arranged on the flange piece in a relative sliding fit mode. The technical problems that in the prior art, an external tool is mostly needed to conduct coaxial butt joint operation on a fan tower cylinder and a tower cylinder flange before welding, the coaxial butt joint process between the fan tower cylinder and the tower cylinder flange is too tedious, and later welding operation between the fan tower cylinder and the tower cylinder flange is inconvenient for workers are solved.

The invention discloses a refrigeration pipe welding positioning method and device. The method comprises the following steps that S1, branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the welding gun, and a branch pipe of the main pipeline moves to cross the welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.

The invention relates to the technical field of angle valve manufacturing, in particular to angle valve welding equipment and a working method thereof. According to the equipment, through cooperative operation of the integrated assembling device, the welding device, the gas testing device and the transferring device, automatic assembling, rotary type all-round welding, multi-station circulating detection and closed-loop material circulation of the valve body piece and the connector piece are achieved; wherein the assembling device ensures that a connector piece precisely slides to a valve body piece connecting hole by utilizing the height difference design of a transition groove and a first guide groove, and the welding device rotates relative to a welding gun through a rotating seat to complete the full-circumference fusion welding of a seam between the valve body piece and the connector piece. The gas testing device drives the fixing assembly to circularly flow through the cooling station, the testing station and the discharging station through the rotating disc to achieve seamless connection of detection procedures, and the transferring device executes transverse and longitudinal composite motion to guarantee efficient transferring of materials among the procedures. The whole set of system forms a continuous production line, and the assembly precision, the welding sealing performance and the airtightness detection efficiency of welded finished products are remarkably improved.

The invention provides a flexible welding deformation control method and an obtained bogie framework, specifically, a deformation monitoring sensor used for collecting workpiece deformation and a force sensor used for collecting clamping force are installed on a workpiece clamp; the deformation monitoring sensor and the force sensor are connected with the data acquisition control module; the method comprises the following steps: pre-installing a workpiece on a clamp, and establishing a mapping relation among the workpiece, the clamp and each sensor in the clamp; according to historical welding data of the same type of structure, presetting reversible deformation parameters, collecting pre-welding reference data, verifying data of each sensor, and if reversible deformation is effective, entering a welding process monitoring state; welding machine signals and sensor data are collected in real time, the deformation state is processed and analyzed in real time, and adjustment suggestions are output; and after welding is completed, the deformation trend of the workpiece after loosening and clamping is judged in combination with sensor data, deformation data of the workpiece after loosening and clamping are collected, whether the deformation data are qualified or not is judged, and if not, adjustment and repair are conducted till the deformation data are qualified.

The invention discloses a welding defect detection and automatic repair welding system, which comprises a repair welding execution module, a welding point cloud extraction module, a welding defect extraction module and a defect identification and classification module, and is characterized in that the welding point cloud extraction module is in signal connection with the repair welding execution module; complete point cloud data of a welding area are visually collected through the repair welding execution module, a target area is accurately extracted through the welding point cloud extraction module, and then efficient extraction and contour positioning of welding defects are completed through the welding defect extraction module based on point cloud feature analysis. Accurate identification and multi-type classification of defects are achieved through a defect identification and classification module, finally, six-dimensional coordinates of repair welding track points under a camera coordinate system are obtained through a repair welding instruction calculation module, and then a hand-eye calibration matrix, a tool calibration matrix and a transformation matrix between a wrist joint coordinate system and a base coordinate system are combined, so that the repair welding precision is improved. And through multi-coordinate system collaborative conversion, the six-dimensional pose of the repair welding track point of the mechanical arm welding gun is solved, and equipment is driven to complete repair welding operation.

A ship sub-assembly weld seam identification method, comprising: creating a point cloud weld seam identification training dataset by means of point cloud discretization, virtual sampling, weld-zone semi-automatic interactive annotation, and style transfer-based augmentation of ship sub-assembly CAD data; training a point cloud weld seam identification model, and exporting a weld seam identification model data file; using a 3D point cloud camera array as a sampling camera to collect workpiece 3D point cloud data of a sub-assembly workpiece to be welded at the production site; by means of the weld seam identification model data file, obtaining weld seam annotation position data and positioning a weld seam; and issuing a welding process plan and instruction to control a welding robotic arm and a control device therefor to complete sub-assembly workpiece welding. Also provided are a ship sub-assembly weld seam identification system, a computer device, and a computer-readable storage medium. The method overcomes the shortcomings in conventional 3D weld seam identification methods such as point cloud incompleteness and identification failures caused by steel types and the imaging angles of 3D cameras, thereby greatly improving the adaptability of automatic weld seam identification methods to complex workpieces.

The invention discloses a full-circle needle beam trolley and method based on compressed air energy storage and relates to the technical field of tunnel construction, the full-circle needle beam trolley comprises a needle beam assembly, and supporting legs are arranged at the bottoms of the front end and the rear end of the needle beam assembly; the template assembly is arranged outside the needle beam assembly in the front-back direction of the needle beam assembly, and the template assembly at least comprises a first template group and a second template group; the beam frame assembly is arranged on the outer side of the needle beam assembly, and a supporting piece is arranged between the beam frame assembly and the template assembly so as to connect the beam frame assembly and the template assembly; guide mechanisms are arranged at the front end and the rear end of the needle beam assembly, so that the beam frame assembly drives the supporting piece and the template assembly to slide forwards and backwards along the needle beam assembly under the traction of the guide mechanisms. According to the embodiment of the invention, modular trolley, closed-loop sensing and automatic welding / grouting are realized, template positioning and welding seam and grouting quality are ensured, and leakage and reworking risks are reduced.

The invention relates to the technical field of pipe truss tubular joint welding quality control, in particular to an assembly type pipe truss tubular joint butt-joint tensioning anti-deformation welding method and system which comprises the following steps that S1, an intersecting line is divided in the circumferential direction, and butt-joint references and deformation monitoring point positions of all partitions are calibrated; s2, circumferential distributed tensioning force application point positions are set; s3, a differential pre-tightening force gradient in the circumferential direction of the intersecting line is set, and pre-tensioning force is applied; s4, synchronous cooperation of tensioning actions and deformation control of all the to-be-welded nodes is carried out; s5, welding is conducted in a partitioned and segmented mode, and the pre-tensioning force of the partition corresponding to the intersecting line is dynamically adjusted in the welding process; and S6, after welding, the pre-tensioning force of each subarea is released, and node deformation checking and precision correction are synchronously completed after force release. According to the dynamic pre-tightening force adjusting method for partition differentiation pre-tightening force gradient distribution and welding thermal cycle time sequence matching, the residual stress peak value of the node core area is greatly reduced, and the welding quality and the structural safety of the tubular node are remarkably improved.

The photovoltaic module welding device comprises a driving part, a feeding part, a welding part, a first bearing part and a second bearing part, and the feeding part is used for providing a bus bar to be welded; the first bearing part is used for bearing a battery string group of a to-be-welded bus bar and enabling a to-be-welded bus bar part of the battery string group to protrude out of the first bearing part, and the second bearing part is used for bearing a part, protruding out of the first bearing part, of the battery string group; the welding part is configured to pick up or release the bus bar and heat the bus bar; and the driving part drives the welding part and the picked bus bar to move to the position above the second bearing part, so that the picked bus bar is tightly pressed on a plurality of welding strips at the end part of the battery string group borne by the second bearing part through the welding part, and the tightly pressed bus bar is heated, so that the overlapped parts of the bus bar and the plurality of welding strips are welded and fixed. According to the photovoltaic module welding device, the bus bar is automatically welded on the welding strip at the end part of the battery string group, and the working efficiency is high.

The invention relates to the technical field of heat exchange equipment, in particular to baffle plate welding and fixing equipment in a kettle type reboiler with a multi-anti-vibration structure, which comprises a workbench, a controller, fixing seats and rails, the controller is mounted at the top end of the workbench, and the two ends of the two rails are respectively provided with a group of fixing seats; the bottom ends of the fixing seat and the rail are connected with the top end of the workbench, the baffle plate frame welding device further comprises a supporting assembly and a welding assembly, the supporting assembly is installed at the top end of the workbench, the baffle plate frame can only rotate on the supporting assembly, the welding assembly is arranged at the top end of the workbench, and the welding assembly is used for welding the baffle plate frame and the square block; when the device is used, the supporting pipe penetrates through the multiple sets of baffle plates and is fixedly connected with a pipe plate to form a baffle plate frame, then the baffle plate frame is placed on the supporting assembly, and then the welding assembly is controlled by the controller to weld square blocks on each set of baffle plates, so that the machining efficiency is improved, and the labor intensity of workers is relieved.

The invention discloses a large-span steel structure corridor overall lifting rapid installation system and technology. The installation system comprises an inclination angle monitoring module, a steel truss end displacement detection module, a data monitoring module, a detection early warning module and an early warning removing module. According to the inclination angle monitoring module, a high-precision inclination angle sensor is pasted to the middle position of a truss, the inclination angle theta of the steel truss is monitored in real time through the high-precision inclination angle sensor, the sensor is connected with a PC terminal, and inclination angle data are received in real time. Therefore, the construction progress is accelerated, and the construction cost is reduced; the synchronism of the large-span steel truss in the whole lifting process can be accurately monitored; the working procedures of pausing lifting and measuring every time lifting is conducted by a certain distance in the traditional construction process are omitted, continuous lifting is achieved, and the construction quality and efficiency are improved.

The invention discloses a hollow anchor rod rolling rib welding system. The hollow anchor rod rolling rib welding system comprises a storage rack, a feeding device, a conveying device, a rolling rib device, a discharging device and a welding device. The storage rack is used for storing a base material; the feeding device is used for moving a base material on the material storage frame into a material conveying groove of the conveying device, and the conveying device is used for driving the base material to move in the material conveying groove in the first direction; the feeding end of the rib rolling device and a conveying groove of the conveying device are correspondingly arranged in the first direction, a base material can be conveyed to the feeding end of the rib rolling device through the conveying device, and the rib rolling device is used for conducting rib rolling machining on the base material to form a rod body; the discharging device is arranged at the discharging end of the rib rolling device, and the welding device is used for grabbing the drill bit and welding the drill bit and the rod body on the discharging device in an aligned mode. The hollow anchor rod rolling rib welding system is high in automation degree and production efficiency.

The invention relates to the technical field of photovoltaic panel welding, in particular to a workpiece feeding device of a bus bar welding machine, which comprises two fixing frames, feeding devices, a supporting device and a pushing device, the uniformly distributed feeding devices are mounted at the top of the fixing frames, the supporting device is arranged between the two fixing frames, and the pushing device is mounted on the top of the fixing frames. The device comprises a fixed frame, a driving motor, a driving shaft, a mounting frame, a fixed plate, a driving belt pulley, a driven belt pulley, a belt main body, a fixed shell, a supporting shell, a supporting wheel, a limiting plate, a threaded rod, a nut, a limiting rod, a rubber ring, a pushing spring and a dismounting main body, the driving belt wheel, the belt main body and the driven belt wheel can be driven to rotate through the driving motor and the driving shaft, the belt main body is attached to the supporting wheel so as to support the belt main body, the belt main body can be attached to the photovoltaic module all the time, and stable feeding of the photovoltaic module is guaranteed.

The invention relates to the technical field of coal mine supporting, in particular to a segmented collaborative welding process of a top beam hydraulic support. The method comprises the following steps: sequentially welding a plurality of rib plates and paired main rib pre-assemblies on the bottom surface of a top plate step by step, wherein the rib plates and the paired main rib pre-assemblies form the supporting rib assembly; and a first cover plate is arranged between the paired main reinforcement pre-assemblies, and welding is conducted along gaps between the first cover plate and the main reinforcement pre-assemblies to preset sub-welding points determined based on the thickness of the column socket base. And the column nest assembly is arranged on the side, away from the supporting rib assembly, of the first cover plate, and then the vertical edge of the column nest base is connected with the main rib pre-assembly in a welded mode. And the second cover plate is arranged between the column nest base and the first cover plate, and welding connection is carried out. And the first cover plate, the second cover plate and the column nest assembly located in the area below the branch welding points are welded to gaps between the main reinforcement pre-assembly. According to the welding process, the welding stress in the supporting rib assembly can be reduced, and the problem that the welding quality is poor due to superposition of heat affected zones of welding joints is solved.

The invention belongs to the technical field of tower foot manufacturing, and relates to an automatic clamping device and method for a power tower foot. In the automatic clamping device, a clamping mechanism comprises two right-hand and left-hand trapezoidal lead screws, clamping jaws are movably installed on the right-hand and left-hand trapezoidal lead screws and located on the same horizontal plane, a driving mechanism comprises a driving motor and a cog belt assembly, a rotating shaft of the driving motor is connected with the cog belt assembly, and the cog belt assembly is in meshing transmission connection with the right-hand and left-hand trapezoidal lead screws. According to the automatic clamping method, the inclination angle of the clamping jaws is adjusted to be matched with the shape of a workpiece, the rotating shaft of the driving motor rotates forwards to control the forward and reverse thread trapezoidal lead screw to rotate, the clamping jaws automatically center and clamp the workpiece for welding, the rotating shaft of the driving motor rotates backwards after welding is completed, and the clamping jaws move outwards to loosen the workpiece. The clamping jaw can be controlled to automatically center and clamp a power tower foot workpiece, and the clamping accuracy is improved; and during feeding, balls of the bull eye bearings make contact with the workpieces, and the feeding and discharging efficiency of the workpieces is improved.

The invention provides a rotary stator core welding device, and relates to the field of stator core welding, the rotary stator core welding device comprises a welding support table, the front side of the upper end surface of the welding support table is provided with a circular through hole, two bearings B are mounted in the circular through hole, and inner rings of the two bearings B are fixedly connected with a rotating cylinder; the upper end of the rotating cylinder is fixedly connected with a circular rotating table, and a positioning assembly is arranged on the circular rotating table. Through the collaborative design of the positioning assembly and the driving assembly, the expanding and supporting range of the four expanding and supporting rods can be rapidly adjusted, so that stator iron cores of different specifications can be rapidly adapted, the adaptability of the positioning structure on the stator iron core welding device is improved, no assembly needs to be replaced, and the positioning time of the stator iron cores during welding is greatly shortened; the problem that the adaptability of a positioning structure is reduced due to the fact that an existing stator iron core welding device is limited by the fixed size of the positioning structure and is difficult to quickly adapt to stator iron cores of different specifications during use is solved.

The invention discloses a quality evaluation method and system for a composite board, and relates to the technical field of quality detection, and the method comprises the steps: constructing a latent variable feature space representing interface binding energy abnormity based on an initial response data field through a physical constraint relation between interface local response features and binding energy distribution; extracting a topological correlation structure between local latent variable features in the latent variable feature space through a graph convolutional network to obtain a local binding energy anomaly initial candidate region; active response mode enhanced excitation is carried out on the local area of the initial candidate area, the dynamic enhanced response of each local area is obtained, and a binding energy abnormal area is determined; determining the specific position and range of the hidden pseudo solder strip according to the correlation topological structure difference between the local feature in the binding energy abnormal region and the normal region; according to the method, precise identification and high-precision positioning of the titanium-steel composite plate interface hidden cold solder strip are realized.