196results about How to "Avoid rework" patented technology

The invention discloses a special-shaped steel structure curtain wall construction method based on BIM + three-dimensional scanning, and belongs to the field of building construction, and the construction method comprises the following specific steps: I, carrying out three-dimensional laser scanning on a special-shaped steel structure main body; iI, post-processing scanning point cloud data; iII, reversely establishing a special-shaped steel structure entity model by using the processed point cloud data; iV, performing comparative analysis on the point cloud model of the main body structure and the BIM model; the method can solve the problem of poor installation effect caused by certain deviation between the traditional curtain wall production and installation and an on-site main body, can carry out scanning modeling on a building main body of a special-shaped steel structure, can carry out precision comparison with an original design drawing, and can import model data into a total station to realize automatic lofting; and meanwhile, the construction precision and the construction efficiency are remarkably improved, the reworking problem caused by inaccurate installation is effectively avoided, and therefore the engineering quality is improved.

The invention relates to the technical field of badge assembly, and discloses an automatic badge assembly line which comprises a lower cover feeding mechanism, an upper cover feeding assembly mechanism and an upper and lower cover press fitting module. The upper cover feeding and assembling mechanism comprises an upper cover feeding mechanism, an upper cover transferring mechanism and an accessory feeding mechanism; the upper and lower cover press-fitting module comprises a lower cover transferring mechanism, a press-fitting mechanism and a discharging mechanism. The press-fitting mechanism comprises a rotating body, a press-fitting driving assembly and a press-fitting mold, and through the arrangement of the lower cover feeding mechanism, the upper cover feeding and assembling mechanism and the upper and lower cover press-fitting module, automation of the whole process of feeding of upper and lower covers of badges, assembling of the upper covers, press-fitting of the upper and lower covers and detection of products is achieved; the badge assembling production operation can be completed without manual participation, the labor cost is reduced, the badge assembling production efficiency is improved, and the stability of the product quality is better.

The invention relates to the technical field of bridge construction equipment, in particular to an ascending type movable formwork suitable for simply supported concrete box girders and capable of achieving two-way construction, which comprises a main frame, a front main supporting leg, a rear main supporting leg and a rear auxiliary supporting leg, the outer rib transverse locking mechanism and the outer rib are hung on a cantilever beam of the main frame, the outer mold system is arranged on the outer rib, the inner mold system is arranged in a cavity of the outer mold system, the end mold systems are arranged at the ends of the inner mold system and the outer mold system, and the hanging walkway and the electric hoist are arranged below a connecting beam of the main frame. The counterweight system is arranged at the tail end of the main frame, the anchoring device is arranged at the rear part of the main frame, and the suspender is arranged between the main beam and the outer rib. Reverse construction can be achieved without dismantling the main frame and reassembling, the construction efficiency is high, the construction cost is low, and the bridge protection effect is good.

The invention discloses a high-speed railway fine tuning optimization method suitable for multiple working conditions. The method comprises the steps that S1, high-speed railway ballastless track fine tuning basic data are obtained; s2, establishing a high-speed rail ballastless track double-track multi-target optimization model; s3, solving a double-track adjustment amount based on an interior point method; and S4, obtaining a fastener adjustment grade. According to the method, the adjustment amount of the fastener is used as a decision variable, irregularity indexes such as the adjustable allowance of the fastener, the long-medium-short wave irregularity of double rails, the track gauge and the level are used as constraints, and on the basis, linear weighting is carried out through three targets of minimum adjustment amount, linear regression and track smoothness to establish a target function; the track adjustment amount optimization suitable for various working conditions is achieved, the use amount of fastener accessories in the fine adjustment process is reduced, track double-track fine adjustment is achieved in place at a time, and the track fine adjustment process is simplified.

The utility model aims to provide the cleaning line for slicing the silicon wafer, which is simple in structure, energy-saving, environment-friendly and low in cost. According to the utility model, the cleaning part comprises the bubble water generator, the cleaning part comprises the plurality of cleaning tanks, and the silicon wafer slices are sequentially placed in the plurality of cleaning tanks to be cleaned; the plurality of cleaning tanks are sequentially a primary cleaning tank (1), an ultrasonic normal-temperature cleaning tank (2), a normal-temperature bubble water cleaning tank (3), a bubble water soaking cleaning tank (4), a first weak base water cleaning tank (5), a second weak base water cleaning tank (6) and a plurality of pure water rinsing cleaning tanks which are sequentially arranged; the bubble water generator inputs bubble water into the normal-temperature bubble water cleaning tank (3) and the bubble water soaking cleaning tank (4), and quantitative weak base water is added into the first weak base water cleaning tank (5) and the second weak base water cleaning tank (6). The utility model is applied to the field of cleaning equipment.

The invention provides a strapdown inertial navigation system-level calibration method based on a temperature-control double-shaft position turntable, and overcomes the defects of high workload, easiness in making mistakes, high cost, waste of equipment and manpower and the like in the conventional calibration method. The invention provides temperature and position calibration based on a temperature control double-shaft position rotary table, the transposition limitation of the double-shaft rotary table is overcome, a rotating position and a rotating scheme are designed in a targeted manner, and meanwhile, automatic position calibration of a gyroscope and an accelerometer of a product is realized through automatic transposition of the rotary table. The method can control the temperature of the rotary table incubator, automatically identify the corresponding temperature point of the product, capture the error parameter of the product at the corresponding temperature point, and automatically solve the compensation values of the zero positions of the gyroscope and the accelerometer along with the initial temperature change.

The utility model discloses a pig farm breeding and breeding vehicle which comprises a frame formed by welding square pipes, the frame is provided with an operation layer, a first storage layer and a second storage layer from top to bottom, a side plate of the operation layer is fixedly provided with a fixing plate through a five-star handle, and the fixing plate is provided with a tail breaking device. And a castrating bracket mounted on the other side plate of the operation layer is arranged in front of the tail cutter. The tail cutting device and the castration support are arranged, tail cutting and castration can be achieved on one device, convenience and rapidness are achieved, various nursing behaviors can be completed at a time, meanwhile, tools and operation space used for immune behaviors are provided, rework is avoided, the manual workload is reduced, and artificial counterfeiting is eradicated.

A hollow slab beam hinge joint embedded steel bar efficient flat bending device comprises a pry bar force arm, a pry hook is arranged at the front end of the pry bar force arm, an annular lifting lug is fixed to the lower end of the front portion of the pry bar force arm, the upper end of a pressure-bearing rod is rotatably installed in the annular lifting lug, and a limiting angle plate is fixed to the lower end of the pressure-bearing rod; when the prying hook is hooked into the pre-embedded annular rib, the limiting angle plate is in contact with the bent steel bar; when the pry bar force arm applies force downwards, the bent steel bar is flattened by the limiting angle plate. According to the efficient flat bending device for the hollow slab beam hinge joint embedded steel bar, the construction efficiency can be improved, and the construction difficulty can be reduced.

The invention belongs to the technical field of measurement, and particularly relates to thickness measurement, in particular to a silicon carbide wafer thickness measurement control device and a measurement method. The cover plate is located above the supporting disc. At least one bearing mechanism is arranged on the top surface of the supporting disc and is suitable for bearing a silicon carbide wafer; the detection mechanism comprises a first distance measuring module and a second distance measuring module which are arranged on the bottom surface of the cover plate; the control module is configured to obtain the thickness of the silicon carbide wafer according to the distance between the first distance measuring module and the silicon carbide wafer with the surface stained with the diamond liquid and the distance between the second distance measuring module and the bearing mechanism with the surface stained with the diamond liquid in the grinding process, and then accurate detection of the thickness of the silicon carbide wafer in the grinding process is achieved. And silicon carbide wafer scrapping caused by too thin grinding of the silicon carbide wafer is avoided.

The invention relates to a digital manufacturing and construction method for a special-shaped stone veneer in a large venue, and aims to solve the problems of low machining precision, high mounting difficulty, low construction efficiency and the like of special-shaped stone in construction of an outer vertical face and an inner veneer of a building. The method comprises the following steps: firstly, measuring a building special-shaped structure by using a three-dimensional scanner or a BIM (Building Information Modeling) technology to generate a three-dimensional geometric model; based on the model, combining the material characteristics of the stone, and optimizing the geometric shape and size of the stone through a typesetting algorithm; then the optimized data are imported into five-axis CNC numerical control equipment for precise cutting; pre-assembly is conducted after cutting, errors are detected through laser scanning equipment, and adjustment is conducted till the precision requirement is met; and finally, a laser positioning system and a mechanical sensor are combined, a manual construction team manually installs the stone, and it is ensured that the installation precision meets the design requirement. According to the method, the machining and mounting precision of the special-shaped stone is effectively improved, the construction efficiency is improved, and the structural safety and the attractive effect of a building are guaranteed.

The invention relates to the technical field of slag processing, and discloses a superfine ground slag processing technology which comprises the following specific steps: step 1, slag pretreatment: firstly, screening collected slag through a vibrating screen to remove large impurities and parts which obviously do not meet the granularity requirement in the slag, the aperture of the screen is 5-10mm, and the size of the screen is 5-10mm; the screened slag enters impurity removal equipment, and fine impurities in the slag are further removed; and 2, the slag subjected to drying treatment pretreatment is fed into a drying machine to be dried, moisture is removed, the drying temperature is controlled to range from 150 DEG C to 200 DEG C, and the drying time ranges from 2 hours to 3 hours. According to the method, the slag is coarsely ground, then finely ground and finally superfine ground, so that the slag can be effectively processed into the superfine slag powder, reworking caused by the fact that part of the slag powder does not reach the standard is avoided, the performance and the additional value of the slag powder are improved, and the superfine powder processed from the slag is higher in grinding efficiency, more uniform in particle size distribution and stable in product quality.

The invention discloses a vehicle hub threaded hole size automatic detection device, and relates to the technical field of detection equipment, the vehicle hub threaded hole size automatic detection device comprises a base and a hub member, the top of the base is rotatably connected with a rotating disc, the axis of one side of the rotating disc is provided with a detection assembly, and the outer side of the detection assembly is provided with a clamping block for clamping and fixing the hub member. According to the automatic detection equipment for the size of the threaded hole of the vehicle hub, by introducing an alarm lamp and a circuit closing mechanism, when the size of the threaded hole of the hub does not meet a preset standard, a movable rod moves to an inclined area, so that a connecting copper sheet is in contact with a fixed copper sheet, a closed circuit is formed, and the alarm lamp is activated; the real-time alarm function can find and process unqualified hub parts in time, and the problem in the subsequent assembly or use process caused by the unqualified size of the threaded hole is avoided.

The utility model discloses an edge protection angle steel structure of a concrete structure, and belongs to the technical field of building construction. The concrete structure edge protection angle steel structure comprises angle steel, a first anchor bar and a second anchor bar. The angle steel comprises a first edge and a second edge and is arranged at the corner of the concrete structure. The first anchor bar comprises a first straight section, a second straight section and a first arc section, the first straight section, the second straight section and the first arc section are sequentially connected, and the first straight section is connected with the first edge of the angle steel. The second anchor bar comprises a third straight section, a fourth straight section and a second arc section, the third straight section, the fourth straight section and the second arc section are sequentially connected, the first straight section is connected with the second edge of the angle steel, and the second anchor bar and the first anchor bar are spaced by a set distance in the length direction of the angle steel. According to the corner protection angle steel structure of the concrete structure, the distance between the adjacent anchor bars can be increased, the welding deformation of the angle steel tends to be uniform, the surface bending rise and the straight deviation of the front line can meet the requirements, reworking is avoided, and the construction efficiency is improved.

The present application provides a vehicle window gluing compliance detection method, device, equipment and storage medium, which relates to the field of image retrieval technology. The method comprises: obtaining video data containing a target vehicle window and a gluing worker, using a pre-trained target detection model to perform target detection on the four corners of the target vehicle window and the cleaning or gluing action of the gluing worker in each frame of the video data, obtaining a target detection result, judging the cleaning or gluing status of each of the four corners of the target vehicle window according to the target detection result of each frame, and marking the corners of the target vehicle window according to the judgment result, so that it is possible to determine whether the current gluing of the target vehicle window is compliant by obtaining the marking results of the four corners of the target vehicle window, thereby effectively avoiding the generation of non-compliant windows, thereby eliminating the need to rework the window gluing and improving work efficiency.

The utility model discloses a UPVC pipe bonding auxiliary device relates to pipeline installation field, including slide rail, pipeline support block and two bonding direction adjusting block, be equipped with three slider on the slide rail, slider can freely slide along the slide rail, pipeline support block corresponds with the middle slider, its top is equipped with the semicircle concave cavity that is used for supporting UPVC pipeline, and the two bonding direction adjusting block is equipped with the semicircle concave cavity that is used for supporting the UPVC pipeline. Through the design of the pipe fitting concave cavity formed by combining the cross-shaped concave cavity and the round concave cavity at the bottom, the bonding direction adjusting block can position and support the UPVC pipe fittings, the angle between the two UPVC pipe fittings in the bonding process is ensured to meet the requirements (such as 0 degree, 90 degrees and 180 degrees), the problem of deviation caused by manual naked eye judgment is thoroughly solved, the production efficiency is improved, and the production cost is reduced. And it is ensured that the bonded pipeline is installed in place at a time, reworking is avoided, waste of materials is reduced, and working efficiency is improved.

The present disclosure relates to a bored cast-in-place pile construction early warning method, device, equipment and system. The method comprises: in the process of making the steel cage, obtaining the key parameters of the steel cage, and giving an early warning based on the key parameters of the steel cage; after the steel cage is made, in the process of drilling construction, giving an early warning based on the drilling parameters of a single borehole; after the drilling construction is completed, in the process of pouring concrete, obtaining the pouring parameters, and giving an early warning based on the pouring parameters. The present application provides an early warning in a timely manner based on the parameters of each of the three parts of bored cast-in-place pile construction. It turns passive quality inspection into active quality inspection. It helps to improve the engineering quality of bored cast-in-place pile construction projects, helps to avoid rework due to non-compliant parameters, helps to improve construction efficiency, and improves the accuracy of construction quality control.

The invention discloses an EMIR verification method and system, a computer and a storage medium. The method comprises the following steps: appointing a time sequence library file directory, an RC file path and a constraint file path when an automatic script runs; traversing a time sequence library directory through an automatic script, analyzing time sequence library files, and extracting a PVT condition and an RC model corresponding to each file; automatically classifying and mapping the extracted PVT condition and RC model according to a preset classification rule to generate a multi-process corner combination; automatically generating a multi-mode multi-corner-point MMMC configuration file according to the multi-process corner point combination, and outputting a traceable mapping list and an association table; in a chip physical implementation process, dual-stage EMIR verification is executed in a power supply planning stage and a verification stage. According to the method, the MMMC configuration file matched with the angular point is automatically analyzed based on the time sequence library, and staged EMIR verification is combined in the physical implementation process, so that the overall design efficiency and reliability are improved.

The application relates to a battery and a vehicle. The battery comprises a box body, a plurality of battery cell units and a busbar. The box body comprises a mounting space, and the box body is provided with a protruding piece; the plurality of battery cell units are arranged in the mounting space, and each of the battery cell units is provided with a wrapped pole column, and the plurality of wrapped pole columns are arranged on the same side; the busbar is arranged in connection with the plurality of wrapped pole columns, and the busbar comprises a positioning piece which is fixedly arranged with the protruding piece. Due to the positioning piece and the protruding piece, the operator can better determine the welding position, the alignment is facilitated, and the deviation caused by manual positioning can be avoided. In the welding process, the relative position between the busbar and the plurality of wrapped pole columns is difficult to change due to the fixation between the positioning piece and the protruding piece, and thus the position of the busbar can be prevented from being changed due to the accidental touch of the operator.

The application discloses a kind of visual self-compacting grouting design method and system mould of fabricated structure, belong to the technical field of fabricated structure construction.For the defects such as traditional grouting of fabricated structure invisible, monitoring difficult, easy to cavity segregation and grout waste, the application develops a kind of whole process visible, passive self-compacting grouting method and system mould.The mould is composed of transparent template main body and self-adjusting closing mechanism, and the transparent template includes fixed template and automatic grouting plate, which are connected by tooth groove to form a sealed grouting cavity.The closing mechanism is linked by spring pressure plate, spring group, steel wire and positioning pulley group, and is automatically and accurately closed by the driving of grout pressure and self-weight based on grout pressure and self-weight.The application establishes the quantitative relationship among spring compression amount, grouting pressure and closing angle based on dynamic response analysis, and proposes a new grouting control method, and the mould is designed in a modular way, which can improve construction quality, ensure structure safety and reduce construction cost.

The application discloses a welding method for a high-temperature alloy casing assembly with large wall thickness difference, and adopts double electron beam synchronous welding, generates an electromagnetic field by using an electromagnetic lens inside a welding machine according to the symmetrical positions of two welds, realizes the double electron beam angle deflection function of the electron beam welding machine, deflects the electron beam flow in real time at a high frequency during the welding travel, makes the electron jump at a high frequency of 0.05-500 kHz between two adjacent welds, and obtains the effect that the electron beam synchronously covers and welds the two side welds. The application solves the problems of weld undercutting and burning, effectively reduces the residual stress of the weld, reduces the welding deformation, improves the welding assembly precision of the high-temperature alloy casing parts, and effectively improves the product quality, the use performance and the failure rate of the high-temperature alloy casing.

This utility model relates to the field of auxiliary equipment for construction engineering, and discloses a portable material classification, storage, and transportation box for construction engineering. The box includes a storage box with two fixed plates fixedly connected to its bottom inner wall. A motor is fixedly connected to the inner wall of one of the fixed plates, and a gear is fixedly connected to the drive end of the motor. Connecting rods are rotatably connected inside both fixed plates, and a gear is fixedly connected to the outer wall of one of the connecting rods. Transmission plates are fixedly connected to the outer walls of both connecting rods, and connecting rods are fixedly connected to the inner walls of both transmission plates. This utility model reduces the corrosion of the box material by rainwater and acidic or alkaline liquids such as construction site concrete slurry, prevents aluminum alloy oxidation and steel plate rusting, maintains structural strength, and the sealed structure reduces the leakage of volatile gases while preventing the intrusion of external corrosive gases, ensuring the chemical stability of the materials.

The invention discloses an intelligent production scheduling method for a high-speed railway box girder precast yard. The method comprises the steps that a girder erection general plan is compiled; according to the girder erection total plan, an intelligent scheduling method is adopted to obtain a preliminary girder manufacturing monthly plan production scheduling scheme, an optimal scheme is obtained by adjusting the girder erection total plan and the girder manufacturing monthly plan, a girder manufacturing task sand table is set, site constructors can access and know girder manufacturing tasks, and the girder manufacturing task sand table is set. On-site constructors can access and understand the beam manufacturing task; according to the beam manufacturing pre-plan, a prefabricated box beam is constructed in cooperation with a BIM intelligent building method; recommending a girder moving pedestal scheme according to the girder manufacturing monthly plan and the constructed box girder; and beam erecting operation is carried out according to the beam erecting plan, and beam erecting operation is displayed and fed back through a slope graph. According to the method, the corresponding production scheduling scheme is automatically generated, a flexible adjustment mechanism is provided, accurate guidance of a planning system is provided for the site, and the working efficiency and the compiling quality of the site are improved.

The utility model relates to a sleeve valve pipe grouting quality inspection measuring rod and a sleeve valve pipe grouting structure, the sleeve valve pipe grouting quality inspection measuring rod comprises a sleeve valve pipe A and a measuring rod arranged in the sleeve valve pipe A. The measuring rod comprises a guide rod, an accommodating groove provided with the outer wall of the guide rod, and a sensor arranged in the accommodating groove. The inflation bag is arranged outside the guide rod in a sleeving mode, and the signal receiving device is used for receiving detection results of the sensor. The sleeve valve pipe grouting quality detection device can detect grouting quality in real time in the sleeve valve pipe grouting process.

The invention relates to the technical field of unmanned aerial vehicle inspection, and discloses a method and device for adjusting the position of a unmanned aerial vehicle waypoint based on an illumination angle, comprising the following steps: determining an inspection time, inspection camera parameters and an initial planned track; calculating the solar azimuth of a shooting position according to the inspection time, and calculating the camera field of view angle of the shooting position according to the inspection camera parameters; judging whether the solar azimuth and the camera field of view overlap, if not, executing according to the initial planned track, if overlapping, adjusting the initial planned track; judging whether the shooting of a target at this location is affected by sunlight according to whether the solar azimuth and the camera field of view overlap, if affected by sunlight, the unmanned aerial vehicle automatically adjusts the hovering position, so that the imaging range is not affected by the illumination, and clear and refined inspection photos that meet the requirements are taken, thereby ensuring the inspection quality, avoiding rework, and improving the inspection efficiency.

The utility model discloses a kind of amorphous alloy three-dimensional roll iron core annealing monitoring models, comprising: support, amorphous alloy three-dimensional roll iron core, high voltage coil, low voltage coil, insulating iron hoop, ac frequency modulation power supply, magnetized busbar and power analyzer, high voltage coil and low voltage coil are set in the upper yoke portion of amorphous alloy three-dimensional roll iron core;Insulating iron hoop is used to fix amorphous alloy three-dimensional roll iron core;Magnetized busbar is supported by insulating support plate and placed in the inner frame of the iron core;Ac frequency modulation power supply is electrically connected with high voltage coil;Voltage clamp and current clamp are electrically connected with low voltage coil respectively;Power analyzer is electrically connected with the voltage clamp and current clamp.

The invention provides a noise acquisition device, which comprises an audio acquisition device used for acquiring audio data of a to-be-tested motor in a sound insulation environment; the posture adjusting mechanism is used for bearing and adjusting the posture of the to-be-tested motor and changing the gravity center position of the to-be-tested motor in the testing process so as to detect noise changes of the motor at different angles, and therefore problems possibly existing in the motor can be recognized; and the excitation module is used for applying external excitation to the to-be-tested motor in the testing process to promote impurities or defects in the motor to generate sound, so that the quality problem is exposed. According to the device, through a comprehensive test method combining sound collection, attitude adjustment and internal excitation, accurate collection and analysis of motor noise can be realized, manpower is effectively replaced, the detection efficiency and accuracy are improved, and the device is suitable for noise quality detection of the motor under different attitudes.

The invention relates to the technical field of ocean platform pipeline design, in particular to an ocean platform pipeline laying method based on reinforcement learning, and the method comprises the following steps: S1, dispersing a pipeline laying region into a three-dimensional grid matrix according to the physical size of an actual cabin of an ocean platform, and marking a pipeline starting point, a pipeline ending point and an impassable region; s2, performing Q-Learning algorithm parameter initialization configuration, defining an action space adaptive to the linear movement characteristics of the ocean platform pipeline, constructing a Q value matrix adaptive to three-dimensional space coordinates and actions, and performing initialization; s3, entering a training round, and continuously updating the value evaluation matrix by dynamically adjusting a greedy criterion, a multi-dimensional reward mechanism and a time sequence difference learning rule; and S4, after the training is completed, starting from the starting point based on the converged Q value matrix, selecting an optimal action through a greedy to generate a final pipeline path, and improving the quality and search efficiency of pipeline laying on the ocean platform.

The invention relates to a gravity type turning plate buffer device which comprises a gravity turning plate, a turning plate shaft and a limiting support, a receding hole is formed in the side wall of a chute, the gravity turning plate penetrates through the receding hole, the front end of the gravity turning plate is located in the chute, the rear end of the gravity turning plate is located outside the chute, and the weight of the front end of the gravity turning plate is smaller than that of the rear end of the gravity turning plate. The turning plate shaft is installed on the gravity turning plate, the two ends of the turning plate shaft are connected with the side wall of the chute through bearing seats, the limiting supports are installed on the portions, above and below the receding hole, of the side wall of the chute, and each limiting support comprises a supporting seat and a buffering strip used for making contact with the gravity turning plate. Under the condition that the space layout is limited, the number of collision times of the materials is increased through the gravity turning plate to reduce the kinetic energy of the materials, and compared with a traditional method that the number or duration of rolling and sliding friction of the materials in the chute is increased by increasing the horizontal projection length of the chute to reduce the kinetic energy of the materials, the method is more effective; and reworking caused by finding the optimal value by continuously increasing the horizontal projection length of the chute is avoided, so that the impact damage of the material to the material receiving belt is reduced.

The utility model relates to the technical field of pipeline positioning devices, and discloses a pipeline positioning device for gas engineering, which comprises a bottom plate and a fixing plate, a first motor is fixedly connected to the fixing plate, a worm is fixedly connected to the output end of the first motor, the worm is rotatably connected to the fixing plate, a worm gear is connected to the worm in an engaged manner, and the worm gear is rotatably connected to the fixing plate. According to the pipeline positioning device for the gas engineering, when the pipeline positioning device for the gas engineering is used, through the automatic clamping function of the first clamping jaw and the second clamping jaw, a gas pipeline can be rapidly and stably fixed, the pipeline is effectively prevented from shaking and deviating in the construction process, and the working efficiency is improved. The construction safety is ensured, rework and delay caused by pipeline deviation are avoided, the threaded lead screw is driven to rotate by screwing the handle, workers are allowed to quickly adapt to the butt joint requirements of different heights, tedious manual adjustment is not needed, and the construction efficiency is greatly improved.

This invention discloses a field name standard mapping method and system based on semantic matching, specifically relating to the field of data governance technology. The method involves obtaining a set of source fields to be mapped and a set of standard fields from a standard field library; standardizing field names and descriptions and generating textual representations of the fields; generating semantic vectors using a pre-trained language model and recalling a set of candidate mapping pairs; calculating string similarity, synonym expansion matching scores, data type consistency scores, and sample value pattern consistency scores for the candidate mapping pairs; generating a nearest neighbor confusion risk index based on semantic nearest neighbor density, entity category distribution deviation, synonym inflation, and contextual proof, and performing risk gating and correction, combined with difficult example discrimination scores; applying table-level consistency constraints within the same business table or entity domain to obtain the optimal table-level mapping scheme through joint consistency solving; generating confirmation confidence and outputting mapping results that are automatically confirmed or manually reviewed.