2222 results about "Laser rangefinder" patented technology

The invention discloses an extrusion production process for an aluminum alloy multi-cavity profile. The extrusion production process comprises the following steps that S1, raw materials are prepared; s2, designing and manufacturing a mold; s3, pretreatment before extrusion; s4, extrusion forming; s5, cooling treatment; s6, straightening and finishing; s7, aging treatment; and S8, detecting and packaging. According to the invention, the friction is further reduced by adopting a special high-temperature lubricant and an ultrasonic vibration device in the pre-extrusion pretreatment, the precise control is realized by arranging real-time monitoring and feedback systems such as a laser range finder and an infrared thermometer in the extrusion forming process, and the cooling treatment is realized by automatically adjusting parameters by adding a corrosion inhibitor and arranging a sensor, so that the production efficiency is improved. The cooling quality of the profile is ensured; laser scanning and electrolytic polishing technologies are adopted for straightening and finishing, the straightening precision and the surface quality are improved, a circulating hot air system and a segmented aging mode are adopted for aging treatment, and the aging effect is improved.

The invention discloses a personnel trajectory low-delay accurate positioning method based on safety production monitoring, and relates to the field of industrial safety monitoring, and the method comprises the steps: obtaining signal data based on UWB anchor points, obtaining distance data through a laser range finder, and obtaining image data through a thermal imaging camera; establishing a three-dimensional geographic coordinate system based on the geographic space of the production workshop; extracting scene features of a production workshop, and constructing a virtual workshop; through timestamp alignment, consistent signal data, consistent distance data and consistent image data are obtained; calculating multi-dimensional positioning data through confidence evaluation; calculating scene feature weights; the multi-dimensional positioning data and the scene feature weight are imported into a virtual workshop, the virtual workshop performs multi-channel splicing on the multi-dimensional positioning data and the scene feature weight, and a positioning model is constructed; and obtaining positioning data. The method has the advantages that through multi-source heterogeneous data fusion and scene feature constraint, the positioning robustness in a complex industrial environment is improved.

The invention relates to a buoyancy tank wharf real-time assembly quality control method, and belongs to the technical field of port engineering automatic construction. According to the method, aiming at the problems of large geometric positioning deviation, uneven contact surface stress and difficulty in real-time control of attitude instability in buoyancy tank assembly, laser range finders are mounted at four corners of a buoyancy tank through a geometric positioning layer to monitor horizontal deviation, and pressure sensors are arranged on a butt joint surface through a mechanical sensing layer to generate a pre-tightening force curve; the attitude monitoring layer adopts a bottom inclination angle sensor to detect inclination; according to the horizontal deviation, the curve similarity deviation and the inclination angle deviation, the real-time management and control platform triggers a hydraulic adjusting mechanism, a torque wrench and a balance weight drive to conduct adjustment; meanwhile, data are stored through a buoyancy tank number, a timestamp and a sensor type three-dimensional index, and a rechecking instruction is generated based on the difference between the current adjusting quantity and the first three mean values. According to the invention, real-time control and dynamic adjustment of the assembly process are realized, and the modular assembly precision and safety of the floating wharf are improved.

The invention discloses an unmanned aerial vehicle inspection device and method, the unmanned aerial vehicle inspection device comprises an unmanned aerial vehicle, a laser ranging camera, a holder, a telescopic device and an ultrasonic detection device, the telescopic device is installed on the unmanned aerial vehicle, and the ultrasonic detection device is connected with the telescopic device through the holder. The laser ranging camera is connected with the first end of the unmanned aerial vehicle through the holder, and the laser ranging camera and the ultrasonic detection device are both located below the unmanned aerial vehicle. The invention belongs to the technical field of unmanned aerial vehicles, and aims to solve the problem that in the prior art, iron tower inspection cannot inspect the nut loosening condition. The technical effects are that the anti-loosening condition of the nut can be reliably and accurately detected, the loosening condition of the nut can be timely detected, and the stability of an iron tower can be guaranteed.

The invention relates to the technical field of measurement and automation, in particular to a non-contact wire diameter identification method and system, and the method comprises the steps: enabling a CCD camera and a laser range finder to aim at a remote cable identification target, and obtaining a cable image and the spatial position information of the cable image; inputting the cable image into a trained cable type identification model for feature extraction and classification processing to obtain a cable type, and determining an edge detection preset parameter corresponding to the cable type; edge extraction and contour segmentation are carried out based on the cable image and edge detection preset parameters, and the pixel length of the cable diameter is obtained according to geometric characteristic estimation of the segmented contour; based on the spatial position information of the cable and the pixel length of the diameter of the cable, performing scale conversion from an image to a physical world to obtain the actual length of the diameter of the cable; and based on the actual length of the cable diameter and the cable type, searching a matching item in a preset cable model database to obtain a cable model identification result.

The invention discloses a stereoscopic warehouse with an automatic stacking function, and belongs to the field of stereoscopic wares.The stereoscopic warehouse comprises goods shelf bodies, driving mechanisms are installed on the opposite sides of every two goods shelf bodies, scraping mechanisms are installed on the surfaces of the driving mechanisms, and cleaning mechanisms are installed on one sides of the driving mechanisms; a correcting mechanism is mounted on the lower surface of the driving mechanism; through cooperative use of the devices, the straightness of the guide rail is monitored in real time based on the laser range finder, when the straight line of the guide rail deviates, the electric push rod is started to drive the scraping plate to move so that the scraping plate can be attached to the surface of the guide rail, and the scraping plate is driven to move based on the sliding base so that oil sludge on the surface of the guide rail can be removed through the scraping plate; when deviation still exists in the guide rail after the guide rail linearly cleans the oil sludge, the correction mechanism is started to correct the guide rail, and chain shutdown of the stereoscopic warehouse caused by much oil sludge or deviation of the guide rail is avoided.

The invention discloses an unmanned aerial vehicle photovoltaic inspection real-time path planning method and system, and relates to the technical field of control in a specific dimension. Comprising the steps of planning an initial route and setting inspection routes in different areas; an image is collected by adjusting the camera pitch angle of the second holder, and the distance is measured in real time through the laser range finder; uploading an image shot by the second pan-tilt camera, identifying the photovoltaic string, establishing a string position correction model, and calculating the three-dimensional coordinate of the center point of the string; implementing local route optimization according to the string center point coordinate data set and the initial route based on an ant colony algorithm; the unmanned aerial vehicle flies to a set waypoint along a flight route, the first pan-tilt camera shoots an image, identifies a picture center photovoltaic string, calculates a center point coordinate difference, and the unmanned aerial vehicle corrects the position and executes an inspection image acquisition task. The problems of insufficient real-time performance, poor adaptability to complex terrains and unstable image acquisition quality are solved, and the purposes of strong real-time performance, strong adaptability, high image quality, high recognition capability and high precision are achieved.

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 ink jet control, and discloses an intelligent ink jet control system and method, a robot and a storage medium. The method comprises the following steps: firstly, acquiring surface contour data and color information of an object to be jetted through a laser ranging device, and constructing an object surface feature vector; a target ink jet area is determined through area spray adaptability evaluation; then, semantic information of ink jet content is obtained, semantic element weights are calculated, and ink jet parameter constraints including an ink droplet size threshold value, an information level presentation rule and the like are generated in combination with a target area range; generating an intelligent ink-jet scheme according to the constraint, and controlling an ink-jet device to form a target pattern; and finally, a moving path of the moving mechanical arm is generated based on a cubic spline interpolation algorithm, and the target pattern acts on the target area. The method can adapt to complex surface forms and various materials, the ink jet process is accurately controlled, patterns are accurately presented and stably attached, and the ink jet effect and the information transmission effectiveness are improved.

The invention discloses a plastic tarpaulin thickness detection device and process, and belongs to the field of equipment for plastic tarpaulin quality detection. The invention discloses a plastic tarpaulin thickness detection device and process, and the device comprises a thickness measurement mechanism which is used for measuring the thickness of a plastic tarpaulin, the thickness measurement mechanism comprises an installation housing, the installation housing is provided with a through groove, and the upper and lower sides of the installation housing are respectively provided with a laser range finder; a placement rack; according to the conveying mechanism, two conveying rollers are installed on a first supporting frame; two adjusting rollers are mounted on the second supporting frame; a correction assembly; a chip removal assembly; and an air increasing assembly. According to the technical scheme, by arranging the adjusting roller, the upper laser range finder and the lower laser range finder, abrasion to the plastic tarpaulin in the measuring process can be greatly reduced, the quality of the plastic tarpaulin is ensured, measuring errors caused by single-side laser can be avoided, and the accuracy of measuring the thickness of the plastic tarpaulin is effectively improved.

The invention relates to the technical field of intelligent warehousing, in particular to a multi-grading granule automatic output system and a using method, a discharging port of a discharging hopper is always located at the rotating center of a second-stage climbing belt conveyor relative to a horizontal belt conveyor, and the falling material stress receiving position of the horizontal belt conveyor is not changed; a discharging hopper on a horizontal belt conveyor is positioned through a discharging hopper laser positioning instrument, and the position of equipment with walking and shoveling functions is accurately solved in cooperation with angles measured by a discharging hopper angle encoder and a traction hole angle encoder; particulate matter monitoring of the stock bin and the collecting hopper is carried out through the three-dimensional laser scanning radar, the high-position laser range finder and the low-position laser range finder, a sensor for detection does not need to be arranged on equipment with walking and shoveling functions, and the equipment with the walking and shoveling functions can be positioned without depending on the sensor arranged on the equipment; therefore, even if a large amount of dust is generated in the particle material conveying process, automatic operation of the output system cannot be hindered.

The utility model discloses a bridge ship collision prevention active protection device which comprises a laser range finder, a control assembly, a main bridge pier, a main bridge bearing platform, a separation type ship collision prevention facility structure, a polyurethane foam rotary drum and a riverbed, the laser range finder and the control assembly are arranged on the upper portion of the main bridge pier, and the main bridge bearing platform is arranged at the bottom of the main bridge pier. A plurality of separated ship collision prevention facility structures are arranged on the periphery of the main bridge bearing platform on the main bridge piers, polyurethane foam rotating cylinders are arranged on the separated ship collision prevention facility structures, and the other ends, away from the polyurethane foam rotating cylinders, of the separated ship collision prevention facility structures are used for being buried in a riverbed to be fixed. When the distance between the ship and the main bridge pier is detected to be smaller than a certain range through the optical distance measuring instrument, the control assembly controls the gas generator to inflate the gas bag to generate buoyancy, the polyurethane foam rotating drum is pulled to the water surface through the buoyancy to make contact with the ship, and the situation that the ship collides with the main bridge pier and consequently the main bridge pier is damaged is prevented.

The utility model relates to the technical field of dam monitoring, in particular to a movable displacement monitoring and early warning device which comprises a guide rail, a supporting plate slidably connected to the top of the guide rail, a guide trolley connected to the side face of the supporting plate and connected to the top of the guide rail in a rolling mode, and an electric telescopic rod installed on the top of the supporting plate. The top of the electric telescopic rod is connected with an L-shaped placement plate, the vertical face of the placement plate is connected with a laser range finder, a control box is installed at the top of the placement plate, a storage battery is installed in the control box, a processor and a transmission module are installed in the control box, and the processor is electrically connected with the transmission module and an alarm. The laser range finder is driven to move left and right, different positions of the dam can be measured, the vertical height of the top of the dam can be measured through the laser range finder by arranging the electric telescopic rod, and then the measurement range of the device is widened.

The utility model provides a calibration device, which is used for calibrating a base of laser annealing equipment, and mainly comprises at least three laser range finders, the laser range finders are arranged above the base, the at least three laser range finders are located at the same horizontal height and are not collinear, and the laser range finders are used for measuring the vertical distance between the laser range finders and the base; the plurality of adjusters are arranged on the edge of the base, and the adjusters are used for adjusting the levelness of the base; and the controller is electrically connected with the laser range finders and the plurality of adjusters respectively, and the controller controls the plurality of adjusters to adjust the levelness of the base based on the at least three vertical distances measured by the at least three laser range finders. The levelness of the base can be monitored in real time based on the laser range finder no matter whether the laser annealing equipment is executing the laser annealing process or not, the levelness of the base is adjusted in real time through the adjuster, the adjusting time of the levelness of the base can be shortened, and the adjusting efficiency can be improved.

The invention provides intelligent track flaw detection equipment and a flaw detection method, and belongs to the technical field of track flaw detection. According to the method, an innovative strategy of staged flaw detection is adopted, double-mode dynamic switching of rapid rough flaw detection and low-speed fine flaw detection is utilized, a high-frame-rate visual system is used for screening surface defects, ultrasonic wave and laser ranging are combined, deep cracks and track gauge deviation are detected, all defect types are covered, and defect missing detection errors at a single speed are compensated. The flaw detection equipment comprises a flaw detection trolley, the flaw detection trolley comprises a chassis, and the chassis is composed of an advancing cross beam and two groups of advancing longitudinal beams connected to the end parts of the advancing cross beam; the advancing cross beam is connected with a visual system and a laser range finder, and an ultrasonic flaw detector is arranged on the advancing longitudinal beam. According to the invention, ultrasonic wave, machine vision and laser ranging technologies are integrated, full-dimension, full-climate and full-scene track flaw detection is realized, and the railway operation and maintenance efficiency, the intelligent level and the operation safety are greatly improved.

The invention provides a tunnel back break intelligent rapid identification technology based on machine vision. According to the method, firstly, the actual space distance of a reference point on a tunnel face is obtained through a laser range finder, and the pixel and physical size conversion proportion is calculated in combination with a shot tunnel face image; and then, screening high-quality guide information by using a visual language model CLIP, and driving a segmentation model SAM for fine adjustment of a tunnel scene to realize accurate segmentation of the tunnel face contour. The contour pixel area obtained through segmentation is converted into the actual physical area in combination with the conversion proportion, the actual physical area is compared with the preset tunnel design contour area, and therefore the over-excavation or under-excavation state of the tunnel face is automatically judged, and the size of the over-excavation or under-excavation area is determined. According to the method, the automation degree, precision and real-time performance of back break detection in tunnel engineering are remarkably improved, the limitation of traditional manual measurement is overcome, and key technical support is provided for intelligent tunneling of a tunnel.

The present invention discloses an intelligent detection method for determining forming defects by the offset of the blank contour of a stamping part, belonging to the field of sheet metal forming quality detection. In the present invention, the offset amounts of the contour feature points of the blank in the defective state and the defect-free state are obtained through finite element simulation of the stamping process. After manually annotating the defect types, a training data set and a validation data set are obtained, and based on this, a BP neural network model is constructed and trained to obtain a defect detection model. At the stamping site, a laser rangefinder is used to measure the offset amount of the actual stamping blank contour feature points along the material inflow direction, and the offset amount is input into the BP neural network defect detection model to output the defect judgment result. The method of the present invention greatly alleviates the current manual dependence on stamping forming quality detection and has the advantages of high detection efficiency, high accuracy, and low cost.

The invention relates to the technical field of tunnel detection, in particular to a tunnel back break detection device and method.The detection device comprises a moving trolley, a supporting plate is arranged on the moving trolley, a laser range finder and a three-dimensional laser scanner are arranged on the supporting plate, a first laser lens is arranged on the laser range finder, and a second laser lens is arranged on the three-dimensional laser scanner; a high-definition camera and a second laser lens are arranged on the three-dimensional laser scanner; a wheel shaft, a pneumatic cleaning mechanism and a scraping and brushing cleaning mechanism are arranged on the moving trolley; the scraping brush cleaning mechanism comprises a first cleaning assembly and a second cleaning assembly, the first cleaning assembly is arranged on the laser range finder, the second cleaning assembly is arranged on the three-dimensional laser scanner, and the first cleaning assembly and the second cleaning assembly are both in transmission connection with the wheel shaft; the problems that an existing laser lofting device lacks self-cleaning capacity and is affected by pollutants such as dust and water mist in a tunnel, so that the quality of light beams is reduced, and the measuring distance and precision are affected are solved.

The invention relates to the technical field of highway tunnel crack measurement, and discloses highway tunnel crack depth measuring equipment which comprises a laser range finder used for measuring the depth of a crack, and the bottom of the laser range finder is provided with a laser emission port; the laser range finder further comprises installation plates fixed to the two sides of the laser range finder, an air curtain isolation mechanism is arranged on the outer side of the laser emission port and used for preventing dust, sand and stone particles from entering the light beam channel, and an airflow supply mechanism is installed on one side of one installation plate. According to the highway tunnel crack depth measuring device, existing highway tunnel crack depth measuring equipment is improved, the designed air curtain isolation mechanism and the airflow supply mechanism are matched with each other, and the airflow supply mechanism can introduce dry nitrogen into the air curtain isolation mechanism, so that clean airflow is continuously blown out below a laser emission port, and an air curtain is formed to isolate a measuring path; and dust or gravel particles are prevented from entering a light beam channel.

The invention relates to an optical distance measuring device with an automatic calibration function and a measuring method thereof, and relates to the technical field of measuring devices.The optical distance measuring device comprises a base, a calibration piece is arranged on the base, a liftable supporting plate is arranged above the base, and a laser range finder and a measuring plate which are opposite to each other are arranged on the supporting plate; the device further comprises a probe assembly, a moving assembly, a follow-up air injection assembly and a follow-up marking assembly, the follow-up marking assembly is connected to the probe assembly, and the probe assembly makes contact with and extrudes the measuring face, so that the follow-up marking assembly automatically marks the uneven position of the surface. When the uneven position is detected, the marking coating is sprayed out of the annular spraying pipe by extruding the second air bag, the uneven position is marked in real time, marking is convenient and rapid, the time and energy of manual marking are saved, the uneven position which is automatically marked is convenient for workers to directly observe, and the efficiency of follow-up repairing or processing work is improved.

The present invention relates to the technical field of detection equipment, and provides a detection equipment for oil drill pipe joints. It comprises a detection platform, the detection platform is fixedly connected to an electric slide rail, the electric slider of the electric slide rail is fixedly connected to a support ring through a mounting plate, the support ring is fixedly connected to a symmetrical first telescopic rod, the symmetrical first telescopic rods are commonly fixedly connected to a connecting shell, a slide plate is slidably connected in the connecting shell, the slide plate is spline-connected to a spline rod, the lower end of the spline rod is rotatably connected to an electric turret, the electric turret is installed with a symmetrical laser rangefinder, and the slide plate is fixedly connected to circumferentially equidistant springs through a fixed column. The present invention utilizes arc-shaped springs to adjust the position of the slide plate, and then adjusts the position of the electric turret and the laser rangefinder, so that the two laser rangefinders are at the same distance from the inner wall of the drill pipe joint, and the two laser rangefinders compare with the measured values, so that the abnormal position of the drill pipe joint value can be quickly inspected.

A split type AUV system comprises an autonomous underwater robot system and a buoy system, the autonomous underwater robot system comprises an electric control sealed cabin, a multi-beam imaging sonar module, a magnetic attraction fixing device, a visual positioning module, an ultra-short baseline USBL transponder beacon, a single-beam sonar module, a depth module, an underwater laser range finder, a battery sealed cabin and a driving unit; the buoy system comprises an ultra-short base line USBL beacon, a floating platform, a cable reel motor, a cable reel, a satellite positioning module, a buoy system electric control cabin, a side scan sonar, an Aruco two-dimensional code plate, a driving unit, a permanent magnet block and a battery cabin; the invention aims to provide an underwater navigation positioning system of a split type AUV (Autonomous Underwater Vehicle), which assists in acquiring the accurate position of an underwater robot.

The invention provides a calibration device for a headlamp detector calibrator. The calibration device comprises a plane coordinate positioning mechanism and a positioning adjusting mechanism, the plane coordinate positioning mechanism comprises a vertical installation flat plate, and the vertical installation flat plate is connected with a luminosity head. The positioning adjusting mechanism comprises a tripod; the tripod is connected with a first installation platform for installing the standard lamp through an angle fine adjustment mechanism, the first installation platform is further connected with a second installation platform for installing the laser range finder through a height adjustment mechanism, and the height adjustment mechanism is used for adjusting the height of the laser range finder through the standard lamp so that the center line of the measuring face of the laser range finder can be tightly attached to the light-emitting face of the standard lamp. The laser range finder is used for testing the distance between the light emitting surface of the standard lamp and the working surface of the luminosity head. According to the invention, the plane coordinate positioning mechanism is matched with the positioning adjusting mechanism, so that the luminous intensity and the optical axis angle of the calibrator of the motor vehicle headlamp detector are accurately calibrated.

The invention discloses a steel pipe welding positioning and correcting method based on laser ranging, which belongs to the field of steel pipe welding and comprises the following steps: clamping and moving a to-be-welded steel pipe to an automatic welding unit through a mechanical arm; image acquisition is performed on the to-be-welded steel pipe, and a welding starting point is positioned; a target laser range finder is activated, space positioning is conducted on a welding starting point, and welding position parameters are obtained; welding gun position parameters of the welding robot are obtained; a welding gun displacement track is analyzed and generated; welding track correction is conducted, and a welding moving path is obtained; and the welding robot is subjected to combined control, and automatic welding is completed. The technical problems that in the prior art, in the steel pipe welding process, the positioning precision is insufficient, different entering angles are difficult to adapt, and weld joint deviation caused by deformation in the welding process is solved, the steel pipe welding positioning precision is improved, automatic tracking welding of entering steel pipes at any angle is achieved, and the welding efficiency is improved. And the position of the welding seam is corrected in real time in the welding process.

The invention provides a construction method for multi-point hoisting in-place of a prefabricated part, and belongs to the technical field of building construction.The construction method includes the steps that a plurality of hoisting point positions are marked on the surface of the prefabricated part, a tension sensor and a hydraulic adjusting device are installed, and a laser range finder is used for establishing a part posture parameter model for calibration before hoisting; starting a synchronous hoisting program, calculating a target tension value of each hoisting point according to the attitude model, realizing stable hoisting and horizontal migration through a hydraulic adjusting module, starting an accurate positioning system for fine adjustment when approaching a target position, and executing in-place operation of reducing the tension value by stages; a tension balance optimization equation set including a force balance equation, a moment balance equation and a dynamic adjustment equation is adopted to optimize the control process, and the technical problems of component deformation and safety risks caused by uneven stress of multiple lifting points in the prefabricated component lifting process are solved.

The invention discloses an underground powerhouse composite aluminum plate modular construction system and method, belongs to the technical field of underground building decoration, and solves the problems that in traditional underground powerhouse decoration, aluminum plates crack due to rock wall deformation, and the construction precision is difficult to guarantee. According to the technical scheme, the modular composite aluminum plate unit is composed of a light keel frame, a filling layer and a decorative aluminum plate layer, and an independent supporting structure is formed through rigid connection of an integral keel net and a generator layer concrete constructional column; the flexible telescopic device is arranged in a gap between the keel net and the rock wall in an embedded mode. And the digital dynamic control module monitors flatness and deformation data in real time through a laser range finder and a vibration sensor, and automatically adjusts the displacement of the inclined long hole of the connecting corner brace and the pre-tightening force of the expansion bolt by using an intelligent feedback actuator. The system is mainly used for high-precision modular decoration construction of an underground powerhouse generator layer, and can effectively adapt to rock wall deformation and ensure that the construction quality is stable and reliable.

The utility model discloses quick express sorting and conveying equipment, and particularly relates to the technical field of express sorting, which comprises a conveying frame, a conveying belt mounted on the conveying frame, a fixing frame mounted on the conveying frame, a laser range finder mounted on the fixing frame, a support frame arranged at one end of the conveying frame, and a transverse conveying mechanism mounted on the support frame. A lifting mechanism is installed on the supporting frame, a longitudinal conveying mechanism is installed on the lifting mechanism, and the supporting frame is connected with a first discharging plate, a second discharging plate and a third discharging plate. The height of the express parcels on the conveying belt is detected through the laser range finder, the express parcels are classified according to the height, the lifting mechanism and the transverse or longitudinal conveying mechanism work cooperatively, and the express parcels are conveyed to the corresponding discharging plates to be sorted. The automatic sorting device realizes automatic sorting of express items according to height, has the advantages of improving sorting efficiency, reducing labor cost, being accurate in sorting and the like, and effectively solves the problems of low efficiency and high labor cost of a traditional sorting mode.

The invention discloses a self-adaptive measuring system and method for the inner diameter of a large-diameter seamless tube, the measuring system comprises a chassis assembly capable of freely moving along the horizontal plane, the chassis assembly is provided with a control cabinet capable of automatically adjusting the angle in the horizontal direction, and the control cabinet is internally provided with a control unit and a data processing unit which are electrically connected. A back plate capable of being adjusted in a lifting mode is arranged on the back face, a measuring module in signal connection with a data processing unit is arranged on the back plate, the measuring module comprises four sets of laser range finders and visual shooting units which are distributed in an orthogonal mode, and the laser range finders and the visual shooting units are movably arranged in the orthogonal direction. The chassis assembly and the control cabinet are suitable for automatic adjustment according to measurement data of the laser range finder, so that the measurement module and the to-be-measured pipe fitting are coaxial. According to the invention, non-contact high-precision measurement is realized, and meanwhile, the measurement precision and the measurement efficiency are improved.

The invention belongs to the technical field of building safety monitoring, and particularly relates to a building safety monitoring device which comprises a base, a shear fork lifting mechanism is arranged on the upper end face of the base, a lifting plate is arranged at the upper end of the shear fork lifting mechanism, and a laser range finder is fixedly connected to the upper end face of the lifting plate. The lifting plate is further provided with a rotary spraying mechanism used for marking the uneven area of the wall. By means of the rotary spraying mechanism, when the local part of the wall is uneven, after measurement work is finished, the nozzle of the paint tank is driven to be aligned with the uneven area of the wall, paint in the paint tank is sprayed to the wall through the nozzle, the uneven position of the wall is marked through the paint, and the paint can be sprayed to the wall through the paint tank. Therefore, monitoring personnel can visually observe the position of the uneven area of the wall body, the process that workers need to find the uneven area in the follow-up maintenance or reinforcement work process of the wall body is omitted, convenience is achieved, and the maintenance and reinforcement work efficiency is improved.

The invention discloses an unmanned aerial vehicle with an anti-impact function, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle comprises an unmanned aerial vehicle body, anti-impact mechanisms, a fixing rod, a detection mechanism and an adjusting mechanism, the anti-impact mechanisms are fixedly connected to the periphery of the outer wall of the unmanned aerial vehicle body, and the fixing rod is fixedly connected to the center of the top of the unmanned aerial vehicle body; a detection mechanism is fixedly connected to the top of the fixing rod, two adjusting mechanisms are fixedly connected to the bottom of the unmanned aerial vehicle body, an anti-impact mechanism is arranged, the shock resistance and impact resistance of a fuselage and propellers of the unmanned aerial vehicle body are improved, the influence of shock on internal precise elements is reduced, and stable operation of equipment is guaranteed; meanwhile, damage to the machine body and parts is reduced through deformation buffering and energy absorption, and the safety and survivability of the equipment are improved; the detection mechanism is arranged, the obstacles are detected in multiple directions through rotation of the four laser range finders, distance information is transmitted to an external display screen, data support is provided for obstacle avoidance decision making, and collision accidents are avoided.