2112 results about "Laser detection" patented technology

The invention belongs to the technical field of automatic detection, and discloses an online laser detection and grading regulation and control system for particle size distribution of crushed raw ore. The invention aims to solve the problems of halo effect interference caused by adhesion of fine dust in a complex industrial environment and insufficient detection precision of a traditional method. The system obtains dynamic scattering light field data through the laser scanning module, identifies a halo effect region and generates a compensation coefficient by using the light field preprocessing module, and realizes accurate reconstruction of particle boundaries in combination with the edge reconstruction module. The particle size distribution analysis module extracts multi-dimensional geometric features based on the accurate boundary data, and generates a real-time particle size distribution curve. The grading strategy generation module formulates a regulation and control strategy according to deviation characteristics of the curve and a preset standard, and the dynamic regulation and control module adjusts parameters of crushing equipment in real time and optimizes particle size distribution. The method effectively overcomes the halo effect interference, improves the detection precision and the system stability, breaks through the single limitation of a traditional method, and provides comprehensive data support for a downstream process.

The invention relates to the technical field of control and regulation systems, in particular to a photovoltaic module anomaly recognition method based on laser detection, which comprises the following steps: generating a clock signal synchronous with a laser scanning time sequence through a hardware synchronous trigger, and driving a temperature and humidity sensor, a salt mist sensor and an illumination intensity sensor to collect environmental parameters; and constructing a multi-source data set containing the salt crystallization trend and the environmental interference level. And based on a temperature and humidity segmented compensation reflectivity base line, a salt mist mode switching optimization dust retention judgment threshold value, and illumination correlation sensitivity adjustment hot spot detection parameters, dynamic model correction is realized. And a fault database is matched to trigger a grading alarm mechanism, and a decision tree classifier is combined to verify time continuity to generate a diagnosis report. A dynamic detection path is constructed through spiral path planning, a multi-machine contract network protocol and wind disturbance trajectory correction, data feedback is executed to form closed-loop control logic, and the problems of misjudgment and missing detection in high salt mist, temperature change and illumination fluctuation environments are effectively solved.

The invention relates to the field of landfill methane emission remote sensing monitoring, and discloses a landfill methane emission flux measuring and calculating method and device and a medium, and the method comprises the following steps: based on regional satellite TROPOMI observation data, carrying out qualitative analysis on annual average methane emission signals of a landfill, and determining a target landfill according to a qualitative analysis result; based on data of a satellite-borne hyperspectral imager, the methane emission flux of the target landfill is quantitatively measured and calculated, and the position of a methane emission hot spot area in the target landfill is determined; and positioning the position of an emission source in the target landfill through an active methane laser detection lens carried by an unmanned aerial vehicle platform, and independently calculating the methane emission flux of the target landfill by adopting an upper and lower section method. Based on the method, the annual average methane emission condition of the landfill can be rapidly and accurately evaluated, the methane emission flux of the whole landfill is obtained, and the internal emission hot spot area of the landfill is positioned.

The invention belongs to the technical field of welding seam detection, and particularly relates to a laser welding seam defect detection machine which comprises support plates, adjusting assemblies arranged between every two adjacent support plates, driving assemblies installed on the support plates and balancing assemblies arranged on one sides of the support plates. Wherein three groups of support plates are arranged in a circumferential array, a front-end support is fixedly mounted on one side of the long edge of each group of support plates, an ultrasonic detection probe, a dot matrix laser and a camera are sequentially mounted on the three groups of front-end supports, an electric control module is mounted on the top surface of each support plate, and a power supply module, a data analysis processing module and a control system are arranged in each electric control module. The device can automatically move on a reducing pipeline, perform positioning detection on a welding seam, and perform circumferential uninterrupted detection in the detection process, so that the detection precision is higher, a mode of combining laser detection and ultrasonic detection is utilized, displacement deviation is automatically corrected after reducing, the error probability is greatly reduced, unnecessary workload is avoided, and the detection efficiency is improved. The detection efficiency is improved.

The invention relates to the technical field of curtain walls, and discloses a measuring device for processing a hyperbolic aluminum plate. Comprising a detection truss body used for providing a movable supporting structure; the laser detection instrument is mounted on the detection truss body and is used for performing three-dimensional scanning on the hyperbolic aluminum plate and generating point cloud data; the reference correction instrument is used for calibrating and detecting the reference position of the truss body; the control module is used for scanning a ground plane reference corresponding to the measuring device for machining through a reference correction instrument, and obtaining an X-axis deviation value and a Y-axis deviation value of the detection truss body and the ground plane reference and a Z-axis deviation value corresponding to the detection truss body; according to the X-axis deviation value, the Y-axis deviation value and the Z-axis deviation value, a reference correction instrument is controlled to calibrate and detect the reference position of the truss body; and controlling the laser detection instrument to walk according to a preset path, executing a scanning program to generate a three-dimensional format file, and performing fitting comparison on the three-dimensional format file and a design model corresponding to the hyperbolic aluminum plate to complete three-dimensional shape detection of the hyperbolic aluminum plate.

The invention relates to the technical field of bridge engineering construction, in particular to a bridge deck concrete flatness detection and correction method, which comprises the following steps: synchronously acquiring bridge deck point cloud, elevation and crack data through a three-dimensional laser scanner, a laser profiler and an ultrasonic sensor, and fusing to generate a three-dimensional digital model; defects such as local protrusions and wave deformation are recognized based on an intelligent analysis algorithm, causes are analyzed, and correction process parameters such as milling, cladding, grouting or ultrathin layer pouring are generated in a targeted mode; operation is executed through equipment such as a finish milling machine, closed-loop control is realized by combining real-time monitoring of a laser profiler, and finally, a traceable digital file is formed through laser detection, inspection and acceptance of an unmanned aerial vehicle and data archiving. By means of the method, the pass percent of the flatness of the bridge floor can be increased to 94% or above, the maximum height difference is controlled within 3 mm, the maintenance period of the bridge is prolonged, and the maintenance cost is reduced.

The invention relates to the technical field of laser detection equipment, and discloses an edge contour laser detector with a rotary table, the edge contour laser detector comprises a lathe bed, a detection clamp, the rotary table and a laser detection head, the detection clamp is installed at the power output end of the rotary table, and a driving part of the rotary table is located in the lathe bed and is provided with a driving unit for driving the driving part to drive the detection clamp to rotate; the laser detection head and the rotary table are both connected to a control unit, and the control unit is configured to control the driving unit to drive the rotary table to rotate by a corresponding angle according to a set detection path and control the laser detection head to perform static or dynamic scanning on a to-be-detected part of a workpiece clamped by the detection clamp so as to measure edge contour data of the workpiece; and the workpiece edge contour data is sent to the data processing unit for processing to obtain a measurement error, and the measurement error is sent to the display terminal. According to the invention, the detection clamp is provided with the rotary table, and the laser measurement technology is integrated, so that the high-precision, high-efficiency and omnibearing measurement of the blade edge can be realized.

The invention relates to the technical field of quartz crucible tools, in particular to a quartz crucible outer contour dimension detection tool which comprises a base, a fixing mechanism and an adjusting mechanism, a laser detector is arranged on the base, a movable disc is movably arranged on the base, a fixing shaft is fixedly arranged on the movable disc, and the quartz crucible outer contour dimension detection tool further comprises the fixing mechanism and the adjusting mechanism. The quartz crucible is centered and fixed on the base through synchronous movement of the fixing mechanism, it is ensured that the crucible is kept at the center position in the detection process, deviation or rotation is reduced, and therefore the measurement error is reduced, the position of the abutting block is adjusted through the adjusting mechanism according to the size of the inner wall of the quartz crucible, and it is ensured that the detection tool can adapt to quartz crucibles of different specifications. When the size of the quartz crucible changes, the detection tool is ensured to be always in close contact with the inner wall of the quartz crucible, and effective fixing and supporting are realized.

The invention discloses a pressure vessel welding seam nondestructive rapid detection device, which comprises a displacement mechanism and a to-be-detected mechanism, the to-be-detected mechanism comprises supporting frames, a pressure vessel main body is placed at the upper top ends of the two supporting frames, and accessories are welded and formed at the two ends of the pressure vessel main body. The lifting frame rotates to drive the two sets of knocking mechanisms to move up and down, the reset spring is compressed in the process, the two sets of knocking mechanisms move in a staggered mode, the welding position inside the pressure container body and the accessory is impacted, and the welding position is detected through the laser detection head. When the pressure vessel is impacted, whether the pressure vessel is damaged or not after being impacted is checked, if the pressure vessel is damaged, the marking pen can achieve fine adjustment of arc-shaped movement with the help of the marking mechanism so as to make contact with the inner wall of the pressure vessel body, and due to rotation of equipment, marking treatment is conducted on the damaged position, and follow-up treatment is facilitated for workers.

The invention discloses an intelligent ground mobile high-precision gas leakage inspection and source tracking system, and relates to the technical field of gas pipe network leakage detection and leakage point positioning analysis. The system is mainly composed of a mobile inspection platform, a mid-infrared laser detection device, a three-dimensional anemograph, an inertial navigation module, a GIS system, a GNSS navigation positioning system, a wireless communication module and an intelligent detection comprehensive platform, and multi-source information fusion calculation, a dynamic adaptive analysis model and a maximum likelihood estimation method are combined. According to the intelligent gas leakage detection system, autonomous inspection can be achieved in a complex environment, abnormal gas component data can be processed in real time, detected gas space-time distribution information is transmitted to an intelligent comprehensive platform through a wireless communication module, data sharing and monitoring are completed, and efficient detection and accurate positioning of gas leakage are achieved. The method is suitable for gas leakage monitoring and component tracking in the fields of urban gas pipe networks, industrial parks and environmental protection, and the efficiency and precision of gas detection are remarkably improved.

The invention discloses a graphite negative electrode powder laser particle size detection device, relates to the field of particle size detection, and solves the problem that an existing particle size detection device is difficult to continuously detect multiple batches of graphite samples, the graphite negative electrode powder laser particle size detection device comprises a device shell and a control top plate arranged above the device shell, and a driving rod and a laser detection head are mounted at the bottom of the control top plate; stirring fan blades are installed at the bottom of the driving rod, a rotating disc is rotationally installed at the top of the device shell, and two symmetrically-distributed detection cylinders and two symmetrically-distributed cleaning cylinders are arranged at the top of the rotating disc; the lifting mechanism is used for lifting the driving rod upwards, and the lifting mechanism is mounted on the inner side of the device shell; through the lifting mechanism, in the rotating process of the rotating disc, the stirring fan blades and the driving rod are lifted upwards and reset downwards, so that the stirring fan blades and the driving rod enter the detection barrel and the cleaning barrel conveniently, particle size detection of a graphite sample and cleaning of the stirring fan blades are realized, and the effect of continuous detection is achieved.

The invention provides a power transmission line windage yaw galloping monitoring and three-dimensional imaging system based on a laser triangulation method, and relates to the technical field of laser ranging, and the system comprises a windage yaw galloping excavation assembly which is used for carrying out windage yaw galloping partition division and windage yaw galloping relation excavation; the windage yaw galloping monitoring module configuration assembly is used for configuring a windage yaw galloping monitoring module; the laser detection data determination assembly is used for determining laser detection data; the three-dimensional imaging module construction component is used for constructing a three-dimensional imaging module; the three-dimensional windage yaw galloping model determining assembly is used for determining a three-dimensional windage yaw galloping model; and the monitoring and early warning assembly is used for carrying out power transmission line monitoring feedback and windage yaw galloping early warning. The technical problems that the power transmission line windage yaw galloping monitoring precision is low and the three-dimensional motion information of the power transmission line cannot be accurately obtained can be solved, and the technical effects of improving the power transmission line windage yaw galloping monitoring precision and ensuring the accuracy of windage yaw galloping early warning by obtaining the dynamic three-dimensional image of the power transmission line are achieved.

The invention discloses a detection device and method for laser film production. Comprising a middle rotating shaft, upper and lower detection turntables, a middle assembly and a driving motor, the detection turntable is provided with a plurality of groups of laser detection heads, and outgoing lines of the laser detection heads are connected to a peripheral annular conductive track through a channel in the transfer shaft; an elastic shifting piece at a power leading end in a cavity of the middle assembly is in contact with the annular conductive track to realize rotary power transmission; the motor drives the middle rotating shaft to drive the detection turntable to rotate, so that the laser detection head scans the thickness of a film in a detection area between the turntables along a circumferential track; the detection rotating discs are connected through columnar discs, motor operation airflow is collected through internal annular air paths of the detection rotating discs, blowing airflow which is symmetrically divided and covers the film breadth is formed through peripheral airflow outlets, a detection area is synchronously cleaned, and static electricity is restrained. According to the invention, high-efficiency, high-precision and multi-channel online thickness measurement is realized, a self-cleaning function is integrated, and the problems of contradiction between efficiency and precision, high cleaning sensitivity and difficult production line expansion in the prior art are solved.

The invention discloses a vehicle-mounted laser gas pollution detection and prediction system, which comprises a mobile laser detection platform, a machine prediction system and a dynamic pollution map generation system, and is characterized in that the mobile laser detection platform is carried on a new energy vehicle and is integrated with a laser gas detector, a high-precision positioning module, an inertial navigation system and an environment sensor group; the machine prediction system receives real-time traffic flow data, weather forecast data and topographic data and outputs a pollution diffusion prediction result; the dynamic pollution map generation system comprises a space-time synchronization module, a data fusion module and a pollution event marking module. And the space-time synchronization module binds the gas pollution data with the positioning coordinates and the millisecond timestamp through hardware clock synchronization.

The invention relates to a plane structured light-based aircraft skin gap and jump detection method, which comprises the following steps of: acquiring a skin opposite seam image and an original skin opposite seam point cloud by using a binocular plane structured light method, and segmenting opposite seam features on the skin opposite seam image based on a light compensation fine-tuning large model deep learning network, mapping the opposite seam features on the skin opposite seam image into the point cloud data to obtain a skin opposite seam pixel region of the image, and then performing error verification; the method comprises the following steps of: firstly, carrying out surface structured light processing on a two-dimensional image, then, carrying out center line fitting and section line extraction to obtain point cloud data distribution of a section line, and finally, carrying out edge chamfer opposite seam gap and order difference analysis and calculation on the obtained point cloud data of the section line. And accurate detection of the opposite seam gap and the jump of the aircraft skin can be rapidly completed. The problems that a traditional method is low in laser detection efficiency, and edge chamfer opposite seam detection is difficult are solved.

The invention provides a laser detector for measuring the verticality of an elevator guide rail. The laser detector comprises a laser ranging vehicle and a light spot detection vehicle, the laser distance measuring sensor is arranged at the right front part of the laser distance measuring vehicle, and the detection end of the laser distance measuring sensor detects in the direction deviating from the laser distance measuring vehicle; the gear motor, the magnetic wheel and the auxiliary magnetic wheel are positioned at the bottom of the equipment; the tilt angle sensor is vertically arranged right behind the interior of the laser detection vehicle; the obstacle avoidance sensors are mounted at the front and rear ends of the laser ranging vehicle and extend out of a section of area; the distortionless position detection lens is mounted right in front of the light spot detection vehicle; the control circuit board is arranged in the lower half area of the interior of the two vehicles and electrically connected with the laser distance measuring sensor, the gear motor, the tilt angle sensor, the obstacle avoidance sensor and the distortionless detection lens; the verticality detector can measure the incompletely vertical area of the guide rail in the installation and use process of the elevator guide rail. The measuring instrument can measure various parameters.

The invention provides a three-dimensional wind field inversion method of a coherent wind lidar, and relates to the technical field of lidar wind measurement, and the method comprises the steps: building a mathematical model of a coherent wind lidar receiving echo signal, and determining an optimal target detection distance; under the optimal target detection distance, emitting a modulated laser detection signal to a target wind field, and processing echo signals which are received by a laser radar and are mixed at different frequencies to obtain an echo signal light field distribution condition; calculating the radial velocity of the wind in the wind field of the target based on the light field distribution condition of the echo signal; the elevation angle of the laser radar is fixed, the four orientations are scanned, radial wind speeds corresponding to the four orientations are obtained, the atmospheric three-dimensional wind field is inverted, and real-time atmospheric wind field three-dimensional detection with high temporal-spatial resolution and high wind measurement precision can be realized.

According to the mining dust monitoring system and method based on multi-wavelength fusion and dynamic compensation, a light chamber is arranged in an inner cavity of a shell, an inlet of the light chamber is connected with a main gas inlet of the shell through a gas inlet pipeline, and an outlet of the light chamber is connected with a main gas outlet of the shell through a gas exhaust pipeline; the laser detection module is mounted in the light chamber and comprises a lens group, a laser source I, a laser source II, a light scattering signal receiving module, a light transmission signal receiving module and a light trap; the first laser source and the second laser source form a dual-wavelength laser source; the micro fan is mounted in the main air outlet; the environment sensing module is mounted in the exhaust pipeline; the method comprises the following steps: constructing an environment drift prediction model; testing the dust concentration in the environment to be tested, and calculating the dust concentration I Csct and the dust concentration II Ct based on the scattered light electric signal and the transmission photoelectric signal; and carrying out environment drift prediction, and obtaining corrected dust concentration data through a fusion calculation mode. According to the system and the method, an accurate dust concentration monitoring result can be obtained.

The invention discloses a real-time laser coal checking system and method, and relates to the technical field of material management and inventory checking, and the system comprises the following components: a laser detection module, a data processing module, a communication module, a monitoring module and a server module. The laser detection module is adopted to perform high-frequency scanning on the coal pile to obtain the three-dimensional point cloud data of the coal pile, the crown block displacement data measured by the laser range finder and the material and density information of the material pile are combined, the volume and weight of the coal pile are calculated through an algorithm, the outer contour of the coal pile can be determined more accurately, and the accuracy of the coal pile is improved. According to the shape characteristics and the density distribution condition of the coal pile, the coal pile is divided into a plurality of small geometries for volume calculation, and compared with traditional manual measurement or simple geometric shape approximation, the method has the advantages that the measurement precision of the volume and the weight of the coal pile can be remarkably improved; and more accurate data support is provided for material management and inventory checking of enterprises.

The invention discloses a detection system based on the flatness of a grinding machine, relates to the technical field of flatness measurement, and solves the technical problem that an existing grinding disc flatness detection system lacks pertinence to detection of different grinding discs, so that the accuracy of a grinding disc flatness detection result is not enough. The data acquisition module is used for acquiring scanning data and the working temperature of the line laser; the detection signal generation module is used for acquiring a plurality of historical grinding data and generating a grinding disc detection signal according to the historical grinding data; the detection scheme generation module is used for acquiring grinding disc feature data of the grinding disc through the database; generating a detection scheme according to the grinding disc feature data; the line laser detection module is used for acquiring the detection scheme and detecting the grinding disc according to the detection scheme; the working temperature is obtained in real time, a calibration scheme is generated according to the working temperature, and the line laser is adjusted according to the calibration scheme; generating a detection result corresponding to the grinding disc according to the scanning data; and the accuracy of flatness detection of the grinding disc is ensured.

The invention relates to the technical field of building board detection, and discloses a building board surface flatness detection device and method.The device comprises a bottom plate, a board body and a laser measuring instrument, and further comprises an upper plate fixedly connected to the upper portion of one side of the front face of a back plate, a measuring assembly is arranged at the bottom of the upper plate; the positioning assembly is arranged in the middle of the top of the bottom plate; the measuring assembly comprises mounting plates which are symmetrically arranged, a motor is fixedly mounted on the inner side of one mounting plate, the output end of the motor is fixedly connected with a threaded rod, and the outer side of the threaded rod is in threaded connection with a mounting seat; and the positioning assembly comprises a double-end screw rod which is slotted and rotationally mounted in the bottom plate, so that the problem that the measurement precision of subsequent laser detection flatness is possibly influenced and the flatness detection result is inaccurate due to the fact that dust and impurities on the surface of the building board are not cleaned in time is solved.

The invention relates to the field of laser detection, and discloses a shaving board processing-based surface flatness detection device which comprises a base, a plurality of conveying rods are arranged at the side part of the base, a wood board is placed on the conveying rods, a detection box is fixedly mounted at the top end of the base, and a laser detector is fixedly mounted in the center of the top of the detection box. The laser detector is used for detecting the flatness of the surface of the wood board, a detection auxiliary device is fixedly installed on the side portion of the base located on the lower portion of the detection box, and a grinding device is arranged on the detection auxiliary device; the two rollers in the detection auxiliary device clamp a wood board, the detection plate is leveled to make contact with the side face of the wood board, a half gear is driven to rotate when the wood board inclines, the half gear is meshed with teeth, the position of a lifting block is adjusted, and even if the edge of the wood board protrudes, the edge of the wood board does not protrude. The lifting block can still be adjusted to enable the board to be in a horizontal position, so that the detection precision of the laser detector is improved, and the influence of board inclination on the detection of the laser detector is reduced.

The invention relates to the technical field of laser image detection, and particularly discloses a belt tearing laser scanning detection device and a belt longitudinal tearing laser detection method. The belt tearing laser scanning detection device comprises an ellipsoidal carrier roller, laser equipment and visual equipment, the outer surface of the ellipsoidal carrier roller is an arc-shaped surface, a belt is tensioned and wound around the arc-shaped surface, and the laser equipment is fixedly arranged in the mode that laser faces the ellipsoidal carrier roller and can irradiate the belt. The visual equipment is fixedly arranged in the mode that the visual field faces the ellipsoid carrier roller and the belt is in the visual field, the structural arrangement can reconstruct the carrying working state of the belt, the tearing characteristic of the belt in the carrying state is highlighted, and the belt longitudinal tearing laser detection method is more suitable for long-distance conveying belt longitudinal tearing detection; and the method has higher detection accuracy.

The invention discloses an automobile part assembly precision intelligent compensation method and a self-adaptive regulation and control system, and relates to the field of intelligent compensation, and the method comprises the steps: synchronously collecting part geometric parameters, tool poses and environment data, and constructing an associated data matrix; analyzing data by using an improved random forest-attention model, and outputting a deviation factor contribution degree sequence; a compensation calculation model is designed accordingly, initial compensation amounts are generated in a segmented mode in combination with a precision margin threshold value, and correction is conducted through historical data similarity matching; selecting an execution path according to the compensation amount and the core deviation type; an actual precision value is obtained through laser detection after assembly, and a compensation error is calculated; based on an error triggering model optimization mechanism, model parameters are iteratively updated by using a gradient descent algorithm, and the deviation identification and compensation precision is improved. The method has the advantages that the model attribution deviation is improved, the precise compensation amount is calculated in combination with historical data, flexible execution, real-time monitoring and model self-optimization are matched, and the assembly precision and the production efficiency are efficiently improved.

The utility model discloses a shaving board surface flatness detection device, and relates to the technical field of shaving board processing. By arranging the supporting plate, the cleaning roller, the dust suction box, the connecting pipe, the draught fan, the dust collection box and the filter plate, the function of cleaning the surface of the plate is achieved, the cleaning roller rotates to clean the surface of the plate, the situation that chippings and impurities exist on the surface of the plate, and the detection result of the laser detector is affected is prevented, and under the action of the draught fan, the detection efficiency is improved. The swept chippings and impurities are collected in a dust collection box; by arranging a bidirectional lead screw, a supporting rod, a fixing plate, a first connecting plate, a mounting plate, a second connecting plate and rollers, the function of limiting the moving position of a plate is achieved, the bidirectional lead screw rotates to drive the first connecting plate at the two ends to move, and the first connecting plate drives the mounting plate to move; and until the roller on the right side of the mounting plate makes contact with the two sides of the plate, the moving position of the plate is limited.

The invention discloses an omnibearing laser detection device for the tooth thickness of a gear forge piece. The device is composed of a buffer positioning mechanism, an angle adjusting mechanism, a control driving mechanism, a laser measuring mechanism and a feeding and discharging mechanism. The buffer positioning mechanism performs positioning from the inner ring of the gear, drives the regular polygon column to ascend and descend through inflation and deflation of the air bag, drives the positioning strip to position the gear, and provides buffering through the soft supporting piece. The angle adjusting mechanism can rotate the buffer positioning mechanism to different states, and the angle adjusting mechanism is matched with the laser measuring mechanism to adjust in the X-axis direction and the Y-axis direction, so that all-directional tooth thickness measurement is achieved. The control driving mechanism precisely drives the gear to rotate according to the state of the buffer positioning mechanism, and the air pump and the telescopic rod cooperatively control the airbag. A mechanical arm of the feeding and discharging mechanism is matched with an overturning claw, and automatic feeding and discharging and gear overturning are achieved. The device uniformly dispatches each mechanism through a control system, has the advantages of high detection precision, high automation degree, adaptability to gears of different specifications and the like, and powerfully guarantees gear quality detection.

The invention relates to the technical field of laser detection, in particular to laser detection equipment for pavement material thickness detection, which comprises a detection table, an arc-shaped hole is formed in one side of the top end of the detection table in a penetrating manner, a stop block is fixedly connected to the outer side, corresponding to the arc-shaped hole, of the top end of the detection table, and an arc-shaped road edge stone is arranged above the top end, corresponding to the arc-shaped hole, of the detection table. A positioning adjusting mechanism is arranged at the bottom end of the detection table, and a scraping cleaning mechanism and a detection mechanism are arranged at the top end of the detection table; the positioning adjusting mechanism comprises a first clamping plate and a second clamping plate which are arranged on the two sides of the inner wall of the arc-shaped hole, and the first clamping plate, the second clamping plate and the check block are matched to be used for positioning and adjusting the position of the arc-shaped road edge stone. Under the cooperation of the deflected first clamping plate, the deflected second clamping plate and the fixed stop block, the position of the arc-shaped road edge stone can be quickly adjusted, so that the adjustment time can be shortened, and the adjustment efficiency is improved.

The invention discloses a device for detecting the surface flatness of a semiconductor by using laser, and relates to the technical field of semiconductor detection, the device comprises a base, the upper end of the base is fixedly connected with a mounting seat, the upper surface of the base is provided with a through groove, a laser emitter and a fixed seat, the laser emitter is arranged on the mounting seat, and the fixed seat is fixedly connected with the mounting seat. The fixing base is arranged on the upper surface of the base, and a transmission mechanism is arranged in the fixing base. Through the servo motor, the transmission case, the ball screw and the screw nut, the workbench can be driven to move, so that the semiconductor material above moves along the horizontal axis, the position of the laser emitter is driven to be adjusted in cooperation with the contraction of the hydraulic oil cylinder, and finally emitted laser points traverse the surface of the semiconductor. The flatness state of the semiconductor surface is judged according to the position of the laser point received by the target, the influence of machine body vibration on semiconductor flatness detection is avoided, the detection precision is high, and the working efficiency is improved.

The invention discloses a municipal bridge expansion joint detection mechanism, and belongs to the technical field of expansion joint laser detection.The municipal bridge expansion joint detection mechanism comprises a main case and heat dissipation holes formed in the corners of the main case, guide columns are fixed to the side edges of the main case, and side width check blocks are arranged on the sides of the guide columns; a reference rod fixed to the side width check block is inserted into a guide column, a laser range finder is installed in the guide column, the laser range finder detects movement of the end of the reference rod through optics, and the middle of the side width check block is connected with a movable wheel through a rotating shaft. A first cleaning assembly and a second cleaning assembly are installed on the front side and the rear side of the movable wheel correspondingly. According to the municipal bridge expansion joint detection mechanism, through the arrangement of the laser range finder, the width of an expansion joint can be accurately measured conveniently, meanwhile, fixed-point or whole-line width measurement can be conveniently conducted on the expansion joint, and silt attached to the side wall of the expansion joint can be conveniently cleaned in the measurement process.

The invention relates to the technical field of measuring devices, and particularly discloses a double-layer composite air pipe sealing size laser high-precision detection device which comprises a base and an air pipe, sealing plates are fixedly connected to the positions, close to a port, of the outer surface of the air pipe, a bolt is arranged between the two sealing plates, and a guide seat is movably connected to the upper side of the base. A positioning assembly is arranged on the upper side of the guide base and comprises a sleeve fixedly connected with the outer surface of the upper end of the guide base. By arranging the positioning assembly, the air pipes can be lifted and supported on the two sides of the connecting position of the air pipes through the symmetrically-distributed jacking blocks, the probability that the air pipes deform downwards in the placing process can be effectively reduced, therefore, the two sets of air pipes are kept in a straight line shape, and then the risk that a gap between the sealing plates changes can be reduced; the detection error of the sealing performance of the air pipe joint caused by the external force can be reduced, and the detection precision can be effectively improved.