453 results about "Diameter measurement" patented technology

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

According to the control method of the high-speed stranding machine provided by the invention, abundant data support is provided for comprehensively and accurately analyzing wire diameter change reasons by acquiring stranded wire cross-section image data, stranded wire surface temperature data and real-time rotating speed of the stranding machine corresponding to the high-speed stranding machine in real time and a real-time tension value acquired by a tension sensor. And carrying out wire diameter measurement by adopting the cross section image data of the stranded wire to generate a real-time wire diameter measurement value. A real-time wire diameter measurement value is dynamically compared with a preset standard value, a deviation coefficient is generated, and a clear adjustment signal is provided through the deviation coefficient. And according to the deviation coefficient, dynamically adjusting a stranding parameter of the high-speed stranding machine to generate a target stranding parameter, and the step can respond to the change of the wire diameter in real time. And real-time compensation control is carried out on the high-speed stranding machine through the closed-loop feedback system according to the target stranding parameters, deviation is corrected in time, and it is ensured that the wire diameter is always kept within an allowable range.

The invention relates to the field of diameter measurement, in particular to a steel wire rope infrared laser diameter detection device and method, and the device comprises an installation seat which is connected with a measurement assembly used for measuring the diameter of a steel wire rope. According to the invention, through cooperation between the two mounting ring plates and the limiting rollers correspondingly limited on the two mounting ring plates, a steel wire rope to be measured is supported and limited, and then through cooperation between the laser emitting end and the laser receiving end correspondingly connected in the two mounting ring plates, the steel wire rope to be measured is measured. The steel wire rope diameter measuring device achieves the effect of measuring the diameter of a steel wire rope in a non-contact mode, effectively reduces friction and vibration during relative sliding of the steel wire rope and the shell through cooperation of a limiting roller and a buffer spring, and improves the measuring precision.

The invention discloses a laser scanning optimization system for high-precision ellipticity and diameter measurement, and relates to the technical field of cylindrical workpiece geometric dimension measurement. Comprising a laser contourgraph assembly, the laser contourgraph assembly comprises four laser contourgraphs, the four laser contourgraphs are arranged in the circumferential direction of the cross section of a to-be-measured workpiece at equal intervals, the included angle between every two adjacent laser contourgraphs is 90 degrees, and the laser contourgraphs are used for synchronously collecting contour point cloud data of the surface of the to-be-measured workpiece; and the data acquisition module is used for receiving and summarizing the contour point cloud data. The four laser contourgraphs are arranged at equal intervals in the circumferential direction of the cross section of the workpiece and collect synchronously, so that the problems that a traditional single laser module is incomplete in rotary scanning coverage and has timeliness deviation are solved; and the point cloud processing module improves the condition of insufficient point cloud processing refinement through splicing, direction correction, section extraction, adaptive region division and arc length interception processing.

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

The utility model discloses on-machine measuring equipment suitable for large-scale deep blind hole processing, which belongs to the field of processing equipment, and is characterized in that a measuring assembly is arranged aiming at a cutter bar, and the inner diameter of a corresponding measuring point of a large-scale deep blind hole in the opposite direction is respectively measured by utilizing the combined arrangement of a measuring ball module and a point light source module, so that the inner diameter measured value of the measuring point is obtained; and on-machine measurement of the inner diameter of the large-scale deep blind hole is realized. The on-machine measuring equipment suitable for large-scale deep blind hole machining is simple in structure and convenient to operate, an existing machine tool structure can be effectively utilized, on-machine measurement of a large-blind-hole workpiece can be achieved only by simply transforming the existing machine tool structure, secondary clamping and positioning of the workpiece caused by measurement are avoided, and the working efficiency is improved. The precision and efficiency of inner diameter measurement in the machining process of the large-scale deep blind hole workpiece are improved, guarantee is provided for the final finish machining efficiency and precision of the workpiece, the machining cost and application cost of the large-scale deep blind hole workpiece are reduced, and good economic value and practical value are achieved.

The invention provides a branch diameter real-time measurement method and system based on a depth camera, and relates to the technical field of data processing, and the method comprises the steps: extracting a skeleton center line based on a final contour, dynamically laying measurement points along a skeleton line, and calculating a unit normal vector, scanning the contour boundary along the normal direction to determine the intersection point coordinates of the normal and the contour; calculating three-dimensional space coordinates according to the intersection point coordinate set and the corresponding depth value to obtain a section diameter measurement value; and on the basis of the section diameter measurement value, real-time smoothing processing is carried out through an exponential weighted moving average filtering algorithm for dynamically adjusting parameters, instantaneous errors are eliminated in combination with an anomaly detection mechanism, and a smoothed diameter data stream is output. The accuracy of contour extraction and the practicability of the measurement method are improved.

Disclosed is a workpiece diameter measurement method including the steps of: measuring coordinates of a point P that is on an outer circumferential surface of a cylindrical workpiece that is supported such that a rotary axis of a main spindle of a machine tool and a central axis of the cylindrical workpiece coincide with each other, the coordinates having a maximum or minimum coordinate in a first direction that is orthogonal to the rotary axis; calculating a distance D2 in the first direction between the point P and a reference point Q that is a point at which a distance D1 in the first direction from the rotary axis is known; and calculating a workpiece diameter of the cylindrical workpiece based on the distance D1 and the distance D2.

The present invention discloses an intelligent recognition and diameter measurement synchronous detection system for surface damage of wire ropes, which relates to the technical field of wire rope monitoring. By deploying a waterproof sensor group on the mooring wire ropes of ocean buoys, including a laser scanning sensor, a waterproof industrial camera, and an ultrasonic sensor, this system can collect real-time images and defect data sets of the wire rope surface. The sensor module combines a communication unit and an image processing unit, which can transmit data in real time and perform image processing and analysis to extract the damage texture features and damage area on the wire rope surface. Through an efficient threshold segmentation algorithm, the coating damage area can be accurately located R ( x , y ) and the total damage area can be calculated A damage . This intelligent recognition and image processing technology can effectively avoid the errors and delays of traditional manual detection, greatly improve the detection efficiency and accuracy, thereby identifying potential damage and faults earlier and reducing the risk of accidents

The invention relates to the technical field of steel wire rope state detection, in particular to a steel wire rope diameter measuring method and system based on event compensation correction. According to the technical scheme, the system comprises an imaging module, a boundary initial extraction module, a dynamic motion estimation module, a dynamic correction compensation module and a diameter calculation module. The imaging module comprises a traditional camera, an event camera, an optical component, a synchronous triggering device and a spectroscope. The traditional camera is used for collecting frame images of the steel wire rope. According to the method, on the basis of complementary advantages of an event camera and a traditional camera, systematic measurement deviation under the dynamic working condition is solved from the mechanism through an event-driven dynamic geometric compensation model, and quasi-static imaging dependence is broken through. The method does not need extra constraint or increase of frame rate, control cost and hardware complexity, avoids the problems of reduction of signal-to-noise ratio and the like, realizes high-precision stable measurement under high-speed and vibration working conditions, adapts to online monitoring of multiple industrial scenes, and is remarkable in practicability and application value.

The invention discloses a laser scanning type overhead conductor health detection system and method, and relates to the technical field of power equipment detection, and the method comprises the steps that a laser scanning module scans the contour of an overhead conductor according to a laser scanning line, detects the environmental interference, and corrects the scanning track of the laser scanning line in real time based on the environmental interference information; acquiring wire scanning data; the data processing module extracts wire contour data based on the wire scanning data, fits a wire diameter according to the wire contour data, and matches a standard wire diameter library to obtain wire diameter data; and the data analysis module calculates the wear rate according to the wire diameter data of the wire, evaluates the health state of the wire in combination with the multi-element wire information, and obtains a health evaluation result. According to the invention, the track deviation of the laser under environmental disturbance can be compensated in a complex scene, the lead diameter measurement precision is improved, the health state of the lead is evaluated by fusing the lead diameter data with the multi-element lead information, and the reliability of the lead health state evaluation result is improved.

The invention discloses a blood vessel inner diameter correction method and device based on an X-ray total attenuation conservation principle and a storage medium, and belongs to the technical field of medical image processing. The core of the method is to discover and utilize the total net attenuation of a blood vessel filled with a contrast agent in an actual motion state and the total net attenuation of the blood vessel in an ideal static state to be kept in conservation. The method comprises the steps that an angiography image is acquired, and a target area and an initial inner diameter measuring line are determined; calculating the gray scale decline amount and the maximum value of each pixel of the line; on the basis of the conservation principle, the inner diameter of the blood vessel in an ideal state is inversely calculated through the formula that the inner diameter is corrected to be equal to sigma [(delta Ii / delta Imax) * Li]. Furthermore, based on the same principle, the method can be expanded and applied to correction of the two-dimensional contour of the target blood vessel. According to the method, errors caused by motion artifacts and resolution limitation are fundamentally compensated through a volume measurement method based on integration and distribution, and the method is particularly suitable for accurate measurement of severe stenosis blood vessels.

The invention discloses a circle diameter measurement error compensation method based on a CCD image sensor. The method comprises the following steps: acquiring a digital image of an object to be measured; performing dynamic light intensity evaluation and correction on the digital image to generate a corrected digital image; generating an image edge coordinate point set for the corrected digital image through a preset edge compensation model; obtaining candidate points based on the image edge coordinate point set; based on the candidate points, generating a fitting circle through circle parameter fitting; and based on the fitting circle, through a preset calibration proportionality coefficient, calculating and obtaining an actual circle radius. Through dynamic light intensity evaluation and correction, the current light intensity parameter can be evaluated and adaptively adjusted to improve the contrast ratio of a real edge, and meanwhile, the real edge is accurately positioned through a preset edge compensation model and a deep learning mode, so that the circle diameter measurement error of a transparent object is reduced.

The invention relates to an intelligent edible mushroom cap diameter measuring method for robot picking. The method comprises the following steps: acquiring individual positions of edible mushrooms by adopting a deep learning target detection algorithm, and cutting a single edible mushroom image; edible mushroom cap boundary fitting is carried out on an image of a single edible mushroom, by adopting the core of the method based on segmented screening and multi-criterion scoring ellipse fitting, color quantization and contour extraction processing are firstly carried out on the image, then noise filtering is adopted and segmented screening is carried out on fitting segments, then a segmented screening ellipse fitting strategy is set, and the image of the edible mushroom cap is obtained. Fitting a plurality of candidate ellipses, screening an optimal ellipse by using a multi-criterion scoring mechanism, and returning ellipse long axis information as diameter information; and fusing the depth information to complete coordinate conversion from the pixel to the physical size, and outputting a diameter measurement result. The method is high in measurement precision, has good adaptability and stability in dense growth and mutual shielding environments, and can effectively solve the technical problem of automatic measurement of the diameter of the edible fungi in a complex cultivation environment.

The invention relates to the technical field of laser diameter measurement, in particular to a synthetic fiber thickness laser measuring device and method.The synthetic fiber thickness laser measuring device comprises a measuring unit and a rotating unit, the measuring unit comprises a shell, the front end of the shell is fixedly connected with an extending plate, and the end, away from the shell, of the extending plate is fixedly connected with a laser head; a side supporting plate is fixedly connected to the side edge of the shell, a movable shaft is arranged at the end, away from the shell, of the side supporting plate, the rotating unit comprises a center shaft movably penetrating through the outer surface of the side supporting plate, the outer surface of the center shaft is fixedly sleeved with a support, and the movable shaft is rotationally connected to the inner side of the support; through the linkage design of the central shaft, the support and other parts, the movable shaft and the fibers wound on the movable shaft can rotate around the central shaft, meanwhile, a transmission system is matched, winding and moving of the fibers are achieved, it is ensured that diameters at different positions and different angles are systematically measured, all directions of the cross section of the fibers are effectively covered, and the measurement accuracy is improved. And the accuracy and reliability of a measurement result are obviously improved.

The invention discloses a laser type constructional engineering pipeline diameter measuring instrument and a measuring method, and belongs to the technical field of pipeline diameter measurement. The device comprises two first rectangular pipes, one first rectangular pipe is fixedly connected with a first laser range finder and a mounting block, and the other first rectangular pipe is fixedly connected with a second laser range finder; a first reflector matched with the first laser range finder is fixed on one of the rectangular rods; the method comprises the following steps: S1, holding a U-shaped handle by hand to drive the whole device to move, so that a semi-cylindrical block is propped against the inner wall of a to-be-detected pipeline; the device can measure the inner diameters of various types of pipelines, the inner wall of the pipeline can be measured only by abutting the semi-cylindrical block against the inner wall of the pipeline and extruding the whole device until the rectangular rod abuts against the inner wall of the pipeline, the device does not need to be adjusted, and compared with the prior art, the working efficiency is greatly improved, the measurement difficulty is reduced, and the measurement accuracy is improved. And whether the pipeline is deformed or not can be quickly measured.

The utility model relates to a reinforcing steel bar size detector, which comprises a detection plate, a diameter measuring plate and a length measuring plate, a front baffle plate is integrally arranged at one end of the detection plate, the diameter measuring plate is slidably connected inside the detection plate, and a sliding plate slidably connected inside the front baffle plate is arranged on the outer wall of one side of the diameter measuring plate. The front baffle is rotatably connected with a bidirectional screw rod through a bearing, the sliding plate sleeves the bidirectional screw rod in a threaded manner, and the diameter measuring plate sleeves the detection plate in a sliding manner. According to the radius measuring structure, the two sliding plates can move towards the reinforcing steel bar in the semicircular placing groove at the same time, the diameter of the reinforcing steel bar can be measured conveniently, the diameter measuring function is achieved, the elastic force of the spring of the length measuring structure can push the length measuring plate to move towards the end of the reinforcing steel bar in the semicircular placing groove, and the length of the reinforcing steel bar can be measured; therefore, the detector has the functions of measuring the diameter and the length at the same time, is multifunctional, and is more convenient to use.

The invention relates to the technical field of bearing measurement, in particular to a method for measuring the diameter of a raceway of a bearing inner ring, which comprises the following steps of: selecting a standard steel ball, using simple measuring equipment, forming a simple geometric model according to design parameters of a bearing, and calculating the diameter of the raceway of the bearing inner ring through a trigonometric function relationship and a geometric relationship. In this way, direct measurement of the arc-shaped raceway is converted into linear measurement, and the linear measurement is converted into the diameter of the bearing inner ring raceway through the trigonometric function relation, so that the measurement error can be greatly reduced, the measurement result is more accurate, meanwhile, the measurement efficiency can be improved, and the cost is low.

The invention relates to the technical field of industrial visual inspection, in particular to a high-speed enameled wire surface defect detection system and method. The real-time diameter measuring module adopts a laser diameter measuring instrument to measure the diameter of the enameled wire in real time, and the precision reaches + / -0.001 mm; the high-voltage pinhole detection module is used for verifying electrical defects; and a control processing module. Optimized combination of a high-speed line-scan digital camera and an optimized Yolo11 model is realized by innovatively fusing visual detection, triple technologies of optical measurement and physical detection are realized, full-dimensional quality verification and multispectral imaging are combined with the optimized Yolo11 model to improve the detection rate of 0.1 mm-level pinholes and scratches, and meanwhile, a laser diameter measuring instrument is integrated to feed back the line diameter in real time, so that the detection rate of the 0.1 mm-level pinholes and scratches is improved. In addition, high-voltage pinhole electrical defect signals are aligned with visual results in a space-time mode, and the problem of high-speed misinformation is solved.

The invention discloses a circular bridge pier column diameter measuring device, and belongs to the technical field of bridge pier column measurement, the circular bridge pier column diameter measuring device comprises a cart, the upper end face of the cart is symmetrically provided with two movable cylinders, the outer side of the movable cylinder on the right side is fixedly sleeved with a worm gear, and a rocker is fixed to the end of the worm. The protective box is arranged on the outer side of the worm gear and the outer side of the worm in a sleeving mode. The device further comprises a lead screw, the lead screw penetrates through the movable cylinder on the right side in a threaded mode, a fixed rod penetrates through the movable cylinder on the left side in a sliding mode, a measuring mechanism is arranged above the supporting base, the measuring mechanism can be stored to reduce the occupied space, and a cleaning mechanism is arranged on the inner side of the measuring mechanism. According to the circular bridge pier column diameter measuring equipment, automatic measurement is achieved by attaching to a pier column, the data accuracy can be improved, the measuring equipment can be rapidly folded when not used, then the occupied area is reduced, meanwhile, marl adhering to the equipment can be cleaned in the measuring process, and the measuring accuracy is prevented from being affected.

The invention relates to the technical field of rubber detection, in particular to a rubber part quality detection device and a detection method thereof. The device comprises a detection index plate, a support and two lifting devices are sequentially arranged on the periphery of the detection index plate, a laser diameter measuring sensor is arranged on the support, and the laser diameter measuring sensor is arranged above a vibration disc feeder in a suspended mode and used for measuring the diameter of a passing rubber part. A top view camera and a side view camera are connected to the lifting device, an annular lamp is fixedly arranged on the periphery of a lens of the top view camera, a supporting rod is fixedly connected to the lifting device corresponding to the side view camera, and a parallel backlight lamp is arranged at the end of the supporting rod; light shields are arranged on the peripheries of the annular lamp and the parallel backlight lamp, baffles are movably arranged in the light shields, and driving assemblies are connected between the baffles and the light shields; the driving assembly adjusts the rotation angle of the laser diameter measuring sensor according to detection data of the laser diameter measuring sensor, drives the baffle to move in the light shield, and adjusts the local shielding range of the baffle to the light emitting area of the corresponding light source.

The invention relates to the technical field of diameter measurement devices, in particular to a laser detection type damper piston rod outer diameter detection device and method.The detection device comprises a detection base, a propeller and a laser detector, the propeller comprises a first shaft piece, a second shaft piece and a driving structure, and a detection guide groove is fixedly formed in the first shaft piece; the detection guide grooves comprise annular guide grooves and communicating grooves, the multiple annular guide grooves are arranged at intervals in the extending direction of the axis X, and the communicating grooves communicate the adjacent annular guide grooves in the extending direction of the axis X. According to the invention, under the guide cooperation of the detection guide groove and the guide body, the laser transmitter and the laser receiver can rotate around each detection point of the piston rod for detection for a circle, then automatically move for the distance of one detection point along the extension direction of the axis X, and automatically align to the next detection point on the piston rod for detection; the detection continuity is better, and the industrial use can be better met.

The present invention relates to the field of diameter measurement, and in particular to an infrared laser diameter detection device and a detection method for a wire rope, comprising a mounting seat, on which is connected a measuring component for measuring the diameter of the wire rope; the present invention realizes support and limitation of the wire rope to be measured through the cooperation between two mounting ring plates and corresponding limiting rollers limited on the two mounting ring plates, and then realizes the effect of non-contact measurement of the diameter of the wire rope through the cooperation of a laser emitting end and a laser receiving end correspondingly connected to the two mounting ring plates. At the same time, through the cooperation of the limiting roller and the buffer spring, the friction and vibration during the relative sliding of the wire rope and the shell are effectively reduced, thereby improving the measurement accuracy.

The utility model discloses an enameled wire diameter measuring machine, which relates to the technical field of diameter measurement and comprises a laser measuring host, a measuring port is arranged on the laser measuring host, a guide component, a cleaning component, a laser diameter measuring module and a linear moving mechanism are arranged in the measuring port, the guide component is used for transmitting an enameled wire, and the cleaning component is movably contacted with the enameled wire. The laser diameter measuring module is used for measuring the diameter of the enameled wire, the linear moving mechanism is arranged at the position, below the enameled wire, of the guide assembly, and the linear moving mechanism is provided with a laser marking device used for marking the diameter of the enameled wire; a gas purification structure is arranged on the laser measurement host, an exhaust fan is arranged on the gas purification structure, and gas guide assemblies are arranged on the gas purification structure and the linear movement mechanism. According to the utility model, the problems that the current wire diameter measurement of the enameled wire cannot be visually displayed on the enameled wire and the section with the unqualified wire diameter of the enameled wire cannot be quickly traced are solved.

The utility model relates to a balloon diameter measuring device which comprises a base, a first clamping mechanism, a second clamping mechanism, a laser measuring instrument, a first sliding rail, a three-axis positioning mechanism and a balloon supporting mechanism. The three-axis positioning mechanism comprises a positioning supporting base arranged on the first sliding rail in a sliding mode, a three-axis positioning platform installed on the positioning supporting base and a three-axis positioning locking piece. The laser measuring instrument is installed on the three-axis positioning platform. The balloon supporting mechanism comprises a balloon supporting base installed on the laser measuring instrument, a second sliding rail, a supporting column arranged on the second sliding rail in a sliding mode and stop blocks arranged at the two ends of the second sliding rail respectively, and a groove capable of containing a balloon is formed in the top end of the supporting column. The balloon supporting mechanism is arranged on the laser measuring instrument to support the balloon, so that the balloon can be kept horizontal, and measurement is facilitated; the three-axis positioning mechanism is arranged between the laser measuring instrument and the base, and the laser measuring instrument is allowed to move on the X axis, the Y axis and the Z axis, so that the device can adapt to balloons of different specifications.

The invention relates to the technical field of cable processing, in particular to a coiling machine with a remote temperature control and diameter measurement module, which comprises a main frame and a drum mounted on one side of the main frame, and a guide wheel module is arranged on the outer side of the main frame at a cable feed port. According to the looping machine with the remote temperature control and diameter measurement module, a plurality of embedded external guide rails and embedded internal guide rails are arranged on the outer side face of a disc, modularized inner side supporting covers are installed on lead screw adjusting assemblies in the embedded external guide rails, the looping machine can adapt to different looping modes, and operation is convenient; a temperature control module with a communication function is installed on a lead screw adjusting assembly in an embedded type built-in guide rail and can be matched with a first arc-shaped guide pipe, a second arc-shaped guide pipe and a split type annular liquid guide pipe on the back of a disc tool to rapidly pull away high temperature at different positions, and synchronous operation can be achieved in the equipment running process; not only can directional temperature control be achieved, but also energy consumption and waste can be reduced.

The invention discloses a power transmission line conductor diameter measurement method and system based on an unmanned aerial vehicle image, and the method comprises the steps: obtaining a multi-view image of a power transmission conductor through an unmanned aerial vehicle, and recording the shooting pose and distance information at the same time; carrying out distortion removal and geometric correction processing on the multi-view image to obtain the pixel width and parallax of the lead, and calculating a first estimated value of the lead diameter and the uncertainty of the first estimated value according to the parallax; obtaining a reference image containing the wire and the insulator through the unmanned aerial vehicle, identifying the model of the insulator and obtaining the real size of the insulator, and calculating a second estimated value of the wire diameter and the uncertainty of the second estimated value through the real size of the insulator according to the proportional relation; and carrying out consistency check on the first estimation value and the second estimation value, and obtaining a fusion line diameter result by adopting a weighted fusion algorithm. According to the invention, through fusion of three-dimensional measurement and reference object inference, high reliability and accuracy of wire diameter measurement are still maintained in a complex environment, and an efficient and safe solution is provided for power transmission line inspection.

The invention belongs to the technical field of cable diameter detection, and particularly relates to a laser diameter measuring device for cable measurement, which comprises a guide rail base and a control cabinet arranged on one side of the guide rail base, and further comprises a detection shell, the detection shell is arranged above the guide rail base, clamping units are arranged on the two side walls of the detection shell, and the clamping units are arranged on the guide rail base. The clamping unit is used for fixing a cable, and the cable penetrates through the interior of the detection shell; the laser detection unit is installed in the detection housing and is used for carrying out full-circumference diameter detection on the cable. The cable diameter is continuously detected in a sectional type follow-up detection mode, the influence of cable vibration on laser detection precision is effectively reduced, the accuracy and stability of a detection result are improved, meanwhile, diameter detection can be performed on the cable from different directions, the comprehensiveness of cable detection is effectively improved, and the detection efficiency is improved. And the influence of impurities such as dust, water and the like on the laser diameter measurement precision can be reduced.

This utility model discloses a transmission shaft outer diameter measuring instrument, relating to the field of outer diameter measurement technology. It includes a housing, control panel, mounting plates, long rods, and electronic components. Multiple sets of mounting plates and long rods are vertically distributed and fixed to form a frame, which is divided into a left frame and a right frame. In this utility model, the control panel controls the electronic components to start a servo motor, causing a lead screw to rotate inside a lead block. This causes the lead block to move a laser rangefinder sensor along the length of a smooth rod. The control panel, through the electronic components, controls the laser rangefinder sensor to emit continuously modulated laser light. The distance is calculated by measuring the phase difference between the emitted and reflected light. The distance between the laser rangefinder sensor and the transmission shaft remains constant, and the rotating shaft maintains its rotation. Measurements are performed, and the measurement data is processed by the electronic components and displayed on the control panel's display screen in the form of a line graph, thereby achieving non-contact quantitative detection of the transmission shaft.