1032results about "Mechanical roughness/irregularity measurements" patented technology

The present invention relates to the technical field of flatness detection devices, and in particular to a road flatness detection device and detection method. Its technical solution includes: a frame and an extension frame slidably mounted on the frame, the frame and the extension frame constitute a vehicle frame, and also includes: a roadblock shielding component mounted on the vehicle frame, when the wheel assembly component contacts the concave and convex surface and drives the vehicle frame to tilt, the roadblock shielding component drives the detection component to move in the opposite direction of the tilting direction, and controls the ground clearance of the detection component to always remain equal. The present invention uses the roadblock shielding component to move the measuring wheel located in the middle of the frame downward when one end of the frame rotates, and the downward movement distance is half of the rising height of the rising end of the frame, which can avoid the influence of the rising or falling end of the frame on the measuring wheel, and thus can effectively improve the accuracy of the measuring wheel when measuring irregular roads, and can effectively improve the accuracy of calculating the road surface flatness data.

The invention relates to the technical field of optical nondestructive testing equipment for the sealing performance of a blueberry bottle opening, in particular to an optical nondestructive testing device and method for the sealing performance of the blueberry bottle opening. According to the technical scheme, the optical nondestructive testing device for the sealing performance of the blueberry bottle opening comprises an optical testing device, mounting grooves, a lead screw, a mounting support, a mounting ring, a Fresnel lens, a micrometer caliper, a double-color laser line light source and a rotating motor, and the mounting grooves are formed in the two sides of the interior of the optical testing device; compared with a traditional optical nondestructive testing device for the sealing performance of the blueberry bottle opening, a single light source or a simple lens group is mostly adopted, a 360-degree annular area of the bottle opening is difficult to cover, illumination on the edge of the bottle opening or a complex curved surface area is insufficient, and tiny defects are prone to being omitted; according to the optical nondestructive testing device for the sealing performance of the blueberry bottle opening, the double-color laser line light source is matched with the Fresnel lens array, multispectral reflection data are synchronously collected, the surface micro-mark contrast is enhanced by utilizing wavelength difference, and the monochromatic light detection sensitivity is effectively improved.

The invention discloses a decorative plate detection device for building decoration, and belongs to the field of building decoration, the decorative plate detection device for building decoration comprises a workbench, the bottom of the workbench is fixedly connected with four supporting legs, and the upper end of the workbench is provided with a flatness detection device. The flatness detection device is arranged to be in contact with the rollers through chain driving, so that tiny unevenness on the surface of the decorative plate can be accurately detected, especially in convex and concave areas. Clear and accurate detection results are ensured through automatic adjustment and marking of the marking pen, errors caused by manual operation are reduced through the automatic marking function, marking accuracy is higher, follow-up finishing and machining are facilitated, stability of the device is kept in the movement process through adjustment of the spring A and cooperation of the movable plate and the rolling wheels, and reliability of the detection results is ensured.

The present invention discloses a gear tooth top flatness detection device, which relates to the field of gear tooth top flatness detection devices, including a box, a detection mechanism is arranged inside the box, the detection mechanism includes a support rod, a support platform, a rack, a mounting plate, and a load-bearing plate, and a circular gear is fixedly connected to the middle outer surface of the support rod. The gear tooth top flatness detection device can effectively avoid the situation where the detection workload of the staff is large due to the use of measuring tools for detection through the coordinated arrangement between the detection mechanism and the cleaning mechanism, and can not only effectively improve the detection efficiency of the gear flatness, but also enable the staff to judge the detection results more intuitively, effectively ensure the accuracy of the detection results, and at the same time, can clean the dust or debris attached to the gear tooth top to avoid the situation where the dust or debris affects the detection results.

The invention discloses a novel plastic product defect automatic detection device, and relates to the technical field of detection devices, the novel plastic product defect automatic detection device comprises a box body, an inner cavity of the box body is provided with a row of conveying rollers, the conveying rollers are used for intermittently conveying plastic product plates to be detected, and the inner cavity of the box body is provided with a detection assembly for performing defect detection treatment on the plastic product plates. According to the novel plastic product defect automatic detection device, the surface flatness of a plastic product plate is detected through the balls, when protrusions or recesses are detected, marking materials of different colors can be discharged through corresponding channels, marks are reserved at defect positions, operators can conveniently and visually judge whether the defect types are protrusions or recesses, and the detection efficiency is improved. A clear indication is provided for subsequent repair or replacement, the marking materials with two colors are accurately segmented by using the first partition plate and the second partition plate, the marking materials are ensured to accurately correspond to the convex or concave positions on the surface of the plastic product plate, and the marking accuracy and reliability are improved.

The invention discloses a flange quality detection device and method, and particularly relates to the field of flange detection.The device comprises a conveying mechanism, a conveying belt is arranged on the conveying mechanism in a transmission mode, and the conveying belt is used for conveying flange workpieces; an executing mechanism is arranged on the conveying mechanism, a third linear driver is arranged at the output end of the executing mechanism, a quality detection mechanism is arranged at the output end of the third linear driver and comprises a sleeve, a sliding rod is arranged in the sleeve in a sliding mode, and a first elastic piece is arranged between the top end of the sliding rod and the inner wall of the sleeve; and an infrared sensor is arranged in the sleeve. Through the arrangement of the cone, after the cone moves into the mounting hole, the cone does not need to be driven to stop horizontal movement, the cone can be driven to automatically and vertically move upwards to leave the mounting hole through extrusion of the mounting hole and the inclined conical surface of the cone, the detection process is not interrupted, continuous monitoring can be achieved, the detection time is shortened, and the detection efficiency is improved.

The invention relates to the technical field of corrugated paper box production, in particular to a thickness detection device for corrugated paper box production and a using method, the thickness detection device comprises a C-shaped frame, a paperboard placing groove is formed in the upper surface of the bottom of the C-shaped frame and used for positioning a corrugated paperboard, and the lower surface of the top of the C-shaped frame is connected with a reset mechanism. The upper surface of the bottom of the C-shaped frame is connected with a scale plate, the top of the C-shaped frame is connected with a measuring mechanism and an adjusting mechanism, the measuring mechanism is used for measuring the thickness and flatness of a corrugated board, and the adjusting mechanism is used for adjusting a thickness measurement value according to the flatness of the corrugated board. Through cooperative use of the measuring mechanism and the adjusting mechanism, self-adaptive compensation of a thickness measurement value is realized, when the surface of the corrugated board is uneven due to uneven thickness distribution, the average value of the thickness of the corrugated board can be detected, the flatness of the corrugated board can be measured, and the measurement accuracy of the corrugated board is improved. And then the thickness data is adjusted through the measured flatness, so that the production quality of the packaging box is guaranteed.

The invention discloses a thickness measuring device for mechanical manufacturing, which comprises a measuring assembly and an auxiliary assembly, and is characterized in that the measuring assembly comprises a measuring tube, fixing plates symmetrically arranged on two sides of the measuring tube, a fixing rod rotationally mounted at the lower end of the fixing plate on one side, and a sliding groove formed in the side, close to the fixing rod, of the measuring tube; the auxiliary assembly comprises a grip arranged in the middle of the outer side of the fixing plate on the other side and round level bubbles arranged at the upper end and the lower end of the grip. The measuring tape rolls are symmetrically arranged at the upper end and the lower end of the measuring tube. The movable measuring mechanism is installed in the sliding groove. The adjusting mechanism is arranged at the lower end of the measuring tube and connected with the movable measuring mechanism in an engaged mode. The bubble level is fixedly installed in the middle of the fixing plate, and the control panel is arranged at the upper end of the fixing plate. The thickness measuring device is low in manufacturing cost and simple to use, can judge the posture of a measured workpiece, has the advantages of convenience in thickness measurement, high thickness measurement efficiency and high thickness measurement accuracy, has multiple functions, and improves the use diversity of the device.

The present invention relates to the technical field of diameter detection, specifically to an inner and outer diameter measuring device and method for hot-rolled seamless steel pipe processing, comprising a base and a seamless steel pipe body arranged above the base, and also comprising a detection support plate, which is constructed as two respectively placed on the inner and outer surfaces of the seamless steel pipe body, one side of the detection support plate is provided with a plurality of rollers that can contact the seamless steel pipe body, one side of the detection support plate is provided with an encoder for detecting the number of rotations of the rollers, and the interior of the detection support plate is provided with an extrusion assembly that pushes the rollers to be close to the surface of the seamless steel pipe body; a marking liquid shell, which is constructed as two for storing different marking liquids, the interior of the detection support plate is slidably connected with an infusion tube that is rotatably connected to one side of the roller, and the marking liquid shell is connected with the infusion tube, and the interior of the marking liquid shell is provided with a liquid pushing assembly that cooperates with the extrusion assembly. The different marking liquids in the two marking liquid shells are sprayed out through the nozzle, so as to intuitively distinguish the defect types.

The invention relates to the technical field of bearing outer ring run-out degree detection, and discloses bearing outer surface flatness detection equipment and a detection method. The bearing outer surface flatness detection equipment comprises a rotary table, a jig, a dial indicator, a lifting rod, a driving wheel, a driving disc, a push-pull rod, a transmission wheel and a lifting sleeve, the rotary table can rotate, the jig is fixed to the upper end of the rotary table, the lifting rod can move up and down, the dial indicator is fixedly installed at the upper end of the lifting rod, and a plug pin is fixedly installed at the lower end of the lifting rod. The driving wheel is vertically arranged and comprises an incomplete gear; the incomplete gear is intermittently meshed with a gear I fixed at the lower end of the rotary table; the upper surface of the lifting sleeve is arranged to be a plurality of planes with the heights sequentially reduced, and every two adjacent planes are connected through an inclined face. The bolt can contact each plane; a contact of the dial indicator can contact different positions of the bearing outer ring in the height direction, and circumferential runout detection of different positions of the outer circumferential surface of the bearing outer ring is achieved.

The invention relates to the technical field of flatness detection devices, and discloses a flatness detection device and a detection method for hydrogen fuel cell electrode membrane production.The flatness detection device comprises a detection table, a supporting frame is horizontally installed above the detection table in a sliding mode, and the supporting frame is horizontally installed on the upper surface of the detection table in a sliding mode along a straight line; linear lifting equipment is fixedly mounted on the support frame; according to the flatness detection device, through arrangement of the supporting seat, the detection rotary drum, the marking paper tube and the detection rod, when the supporting seat translates, the detection rotary drum rolls and drives the detection rod to rotate, so that the detection rod is close to an electrode film once at equal intervals, and when the contact position of the surface of the electrode film and the detection rod has a bulge, the detection rod cannot be damaged; the detection rod is jacked up to be in contact with the marking paper tube, so that recording points are left on the marking paper tube, the number of the positions of the protrusions on the electrode film can be rapidly recorded, and damage to the electrode film can be reduced due to the fact that the detection rod is in point contact with the electrode film, and the contact time is short.

The invention discloses a surface roughness and size precision common prediction method based on a relative position matrix, and mainly relates to the field of roughness detection. Comprising the steps that in the turning machining process, vibration signals are collected in real time through multi-channel acceleration sensors arranged at the positions of a main shaft, a tool and a workpiece clamp, and a roughness measuring instrument and a micrometer are synchronously used for measuring the surface roughness value and size data of a machined workpiece; normalization processing is carried out on the collected vibration signals, the vibration signals are converted into two-dimensional images to be expressed based on a relative position matrix algorithm, deep features are extracted through two-dimensional discrete wavelet transform, and the spatial expression ability of the signals is enhanced. The method has the beneficial effects that the vibration signal is converted into the two-dimensional RPM graph through the RPM, and the 2D-DWT is utilized to perform decomposition reconstruction and image fusion, so that the deep sharing features in the vibration signal are effectively extracted, and the method plays a key role in improving the prediction precision of the surface roughness and the size precision.

The embodiment of the utility model provides a linear guide rail flatness detection device, and relates to the technical field of linear guide rail detection, the linear guide rail flatness detection device comprises a base frame, the two sides of the top of the base frame are fixedly provided with clamping mechanisms, the middle of the base frame is fixedly provided with a mounting frame, and the top and bottom of the mounting frame are fixedly provided with detection mechanisms; and a guide rail body is clamped on the inner side of the clamping mechanism. The guide rail bodies are arranged on the inner sides of the clamping plates, the second electric push rods are started to enable the clamping plates to be close to each other, and the L-shaped clamping plates can stably clamp the guide rail bodies of different sizes. During detection, the first electric push rod is started to move the pressure sensor inwards, and the detection roller is attached to the outer surface of the guide rail body. The driving motor is started to drive the detection roller to rotate and drive the guide rail body to transversely move. If the surface of the guide rail body is concave and convex, the detection roller extrudes or loosens the buffer spring, and the pressure sensor detects the pressure change so as to judge the flatness. The driving motor can assist in comprehensive detection of the guide rail body.

Disclosed herein is a roundness measuring device and a roundness measuring method of a coating roll for battery manufacturing. The roundness measuring device of a coating roll that supports an electrode sheet when the electrode sheet is coated with an electrode slurry, the roundness measuring device comprising: a displacement sensor spaced apart from the coating roll and configured to measure roundness of the coating roll in a non-contact manner; and a support member on which the displacement sensor is installed and which extends in a length direction of the coating roll, wherein the displacement sensor is installed as a plurality of displacement sensors on the support member in the length direction of the coating roll.

The utility model relates to the technical field of tile detection, in particular to a tile surface flatness detection device, which comprises a transmission module, and a trigger module, a measurement module and a data acquisition module which are electrically connected with one another, the transmission module is used for transmitting a measured ceramic tile and the trigger module, and the trigger module is used for synchronously triggering the data acquisition module to acquire and record the data of the corresponding surface feature points on the measured ceramic tile measured by the measurement module according to the distance between the surface feature points of the measured ceramic tile; the measurement module is used for measuring surface feature point data of a measured ceramic tile and sending the surface feature point data to the data acquisition module; and the data acquisition module is used for processing and displaying the acquired surface feature point data of the detected ceramic tile and transmitting the surface feature point data to the external data processing module in real time. The ceramic tile flatness detection device overcomes the defects of high cost, complex structure, low manual detection efficiency, low precision and the like of common ceramic tile flatness detection devices in the market.

The utility model relates to the technical field of plate processing, in particular to a flatness detection device convenient to mark and used for plate processing. A movable plate is suspended on the rear side between the two fixed plates; the pushing rollers are embedded and screwed in grooves in the side walls of the fixed plate and the movable plate on the front side at equal intervals; the driving mechanism is arranged in the workbench and is connected with two pushing rollers which are symmetrical front and back on one side; the pushing mechanism is arranged in the fixed plate on the rear side, and the pushing mechanism is connected with the movable plate; the detection plates are arranged on the lower side of the top plate in multiple rows; the top wall of the detection plate is connected with the inner top wall of a fixed seat through a spring, and the fixed seat is fixed on the top plate through a bolt; the electric push rods are embedded in the two fixing plates in a bilateral symmetry mode in pairs, and piston rods of the electric push rods penetrate through the upper sides of the fixing plates and then are fixedly connected with the top plate; the marking mechanisms are arranged in the fixed seats in a one-to-one correspondence manner and are connected with the detection plate; automatic marking can be carried out, the applicability is high, and the accuracy of judging the production quality of the plate is improved.

The invention discloses a slope structural surface roughness coefficient testing method. The method comprises the core steps of structural surface pretreatment, rebound detection, contour curve drawing, roughness measurement and the like. Measuring areas are divided and identified, an average rebound value is obtained by using a rebound apparatus, a surface profile is drawn in combination with a profile curvimeter, and a roughness coefficient JRCn is read by using a multi-range roughness ruler and an electronic subdivision technology; in addition, parameters such as rock wall strength and normal stress can be obtained through a point load instrument, a vibrating wire strain gauge and the like, shear strength is calculated in combination with a Barton-Bandis mode, data of multiple measuring areas are integrated, and dynamic correction results of environmental parameters are associated. According to the method, the test precision and efficiency are improved, data integration and full-period management are realized, and a reliable basis is provided for slope stability evaluation.

The utility model relates to a ground flatness measuring tool, which relates to the technical field of building construction measurement and comprises a measuring base plate, a moving roller assembly arranged on the measuring base plate, a measuring box arranged on the measuring base plate, a display screen arranged on the measuring box and a measuring central control assembly arranged in the measuring box and electrically connected with the display screen. The measurement box is provided with a measurement mechanism matched with the measurement center control assembly, and the outer side of the measurement box is provided with a visual observation mechanism used for visually measuring the inclination angle of the substrate; the measuring mechanism comprises a measuring assembly which is arranged in the detection box and makes contact with the ground, the measuring assembly is used for ground flatness detection, and a resistance linkage assembly used for linkage of the measuring assembly and the measuring center control assembly is arranged in the measuring box. According to the utility model, through optimizing the design of the measuring assembly, such as the cooperation of the measuring rod and the limiting slide block, and the application of the resistor linkage assembly, the detection precision of the tiny fluctuation of the ground is improved, and occasions with high flatness requirements are satisfied.

The invention discloses a device for improving glass assembling flatness and a glass flatness detection device, and relates to the technical field of glass flatness detection.The device comprises a lifting assembly, the lifting assembly comprises a lower support, the top of the lower support is fixedly connected with a workbench, and two adjustable supports are arranged on the front portion and the rear portion of the right end of the workbench; firstly, the distance between the upper clamping plate and the lower base plate can be controlled by twisting a nut on a bolt, so that the position of the whole lifting structure is conveniently adjusted, then a lifting air cylinder is controlled to be started to drive a telescopic rod to ascend and descend, and the telescopic rod ascends and descends to drive an adjustable supporting rod and an adjustable hanging rod to ascend and descend at the same time; in this way, the lifting range of the lifting assembly can be effectively widened, then the adjustable hanging rod can be driven to move front and back by controlling the outer adjusting cylinder to move front and back, and the lifting assembly can be promoted to have the function of lifting curtain wall glass of different widths by controlling the adjustable hanging rod to move front and back.

The invention discloses a metal surface flatness detection mechanism and method, and the mechanism comprises a workbench, a layer plate disposed below the workbench, a pedestal disposed below the layer plate, a turnover mechanism disposed at one side of the layer plate, and a rotating mechanism disposed below the workbench, and the turnover mechanism is used for driving a metal product to turn over. The motor is used for driving the workbench to rotate; a hydraulic rod A drives a lifting frame to ascend, a turnover motor drives a metal product to turn over, the lifting frame and the turnover motor are matched with each other, and surface flatness detection is conducted on the upper face, the lower face, the left face and the right face of a metal block in sequence. A servo motor A is arranged and drives a workbench to rotate by 90 degrees under the transmission action of a gear A and a gear B, and the hydraulic rod A is matched with the turnover motor; the front and back surfaces of the metal block are subjected to surface flatness detection, so that the metal product surface flatness detection device can detect the flatness of six surfaces of the metal block, and the detection efficiency of the surface flatness of the metal product is improved.

The invention provides a flatness measuring instrument, a flatness detection method and a flatness measuring vehicle. The flatness measuring instrument comprises a leveling rod and a linear laser transmitter arranged at the top of the leveling rod. The leveling rod is hollow, an inclined reflective mirror is arranged on one side in the leveling rod and arranged in the length direction of the leveling rod, and an included angle is formed between the inclined reflective mirror and the width direction of the leveling rod and is an acute angle. A transparent plate is arranged at the top of the leveling rod, a light transmitting structure is arranged at the bottom of the leveling rod, and laser of the linear laser transmitter penetrates through the transparent plate and the light transmitting structure from the top of the leveling rod. Scale marks are evenly distributed on the side, close to the inclined reflective mirror, of the transparent plate and are parallel to the length direction of the leveling rod. The inclined reflective mirror is matched with the linear laser transmitter and the transparent plate with the scale marks, so that the technical problems of complicated operation, low working efficiency and poor reliability and accuracy of an existing site surface flatness measuring method in engineering construction are solved.

The present invention relates to the technical field of measuring equipment, and specifically to a measuring device for road maintenance and repair, comprising a rod body and a rod head, wherein the rod head is rotatably mounted at the lower end of the rod body and is used to be inserted into the interior of a pipe, and a contactor is provided inside the rod head; an opening is provided on the outer end surface of the rod head, and the contactor includes a push rod that can be rotated out from the opening and abut against the inner wall of the pipe, and an identification rod that can be guided and slid along the axis direction of the rod body is provided on the upper part of the push rod, and when the push rod rotates inwardly or outwardly, the identification rod slides upwardly or downward synchronously. The present invention provides a rotatable rod head at the front end of the rod body, and provides a push rod in the rod head that can abut against the inner wall of the pipe to be inspected, and through the rotation of the push rod, different action relationships can be generated with the protrusions or depressions of the inner wall of the pipe, thereby allowing the identification rod to perform corresponding actions, so that the situation inside the pipe can be clearly understood.

The invention relates to the technical field of road nondestructive testing, in particular to road disease nondestructive testing equipment based on intelligent frequency conversion, which comprises a frame bottom plate, walking wheels are rotatably connected in the lower surface of the frame bottom plate, a hanging buckle frame is fixedly connected to one side of the frame bottom plate, and transmission shafts are symmetrically and rotatably connected in the lower surface of the frame bottom plate. One end of the transmission shaft away from the frame bottom plate is fixedly connected with a cleaning turntable; the road and the detection parts are cleaned from the perspective of machinery, interference of sundries on detection is reduced, disease detection is performed on the target road from two points of the outside and the inside of the road, the flatness detection condition of the target road is preliminarily known, and the detection efficiency is improved. Meanwhile, whether diseases exist in the target road or not is accurately analyzed in an ultrasonic detection mode, settlement or deformation of the target road is further detected from the perspective of vibration, and the disease degree of the target road is divided in an information fusion mode so that the disease degree of the target road can be visually known.

The utility model relates to the technical field of detection devices, in particular to a flatness detection device for building materials, which comprises a detection table, the top surface of the detection table is fixedly connected with two electric guide rails, and the interiors of the two electric guide rails are connected with driving blocks in a sliding manner. The utility model has the advantages that the electric guide rail drives the bracket to translate, the detection roller group rolls on a wood board, the detection roller group moves up and down to drive the connecting rod to move up and down if the wood board is not flat, the up-and-down movement of the connecting rod can be detected through the range finder, and the movement curve of the connecting rod can be plotted; in the detection process, the cleaning brush can slide relative to the wood board, dust on the wood board can be cleaned, the air pump is started to convey air into the flow guide pipe, the air is sprayed out through the air spraying head so that the dust can be blown away from the wood board, and through cooperation of the cleaning brush and the air spraying head, the dust on the wood board can be cleaned.

The utility model discloses a flatness detection device, and relates to the technical field of detection equipment, the flatness detection device comprises a bottom plate, a pressing assembly and a feeler gauge assembly, the pressing assembly is arranged on the bottom plate and is used for pressing a piece to be detected on the bottom plate; the feeler gauge assembly is rotatably arranged on the bottom plate, and when the pressing assembly presses a to-be-measured piece on the bottom plate, the feeler gauge assembly is rotated so that the feeler gauge assembly can pass through the space between the bottom plate and the to-be-measured piece.

The invention discloses terrain flatness measuring equipment for territorial planning space, and relates to the technical field of flatness measuring devices.The terrain flatness measuring equipment comprises a supporting disc, a vertically-arranged stand column is fixed to the supporting disc, the stand column is rotationally sleeved with a steering sleeve, a touch wheel is rotationally installed at the bottom of an elastic guide assembly, and canvas is wound around a cloth winding roller, a cloth unwinding roller and a guide roller; and a marking pen for marking on the canvas is mounted on the elastic guide assembly. According to the invention, the translation frame linearly moves relative to the extension frame, so that the trolley wheel can move up and down along with topographic fluctuation under the action of the elastic guide assembly, the arranged marking pen can mark on the canvas to measure the topographic flatness in a certain direction, and the steering sleeve drives the extension frame to rotate, so that the flatness of the topographic flatness in a certain direction can be measured. Switching adjustment of the moving direction of the trolley wheel is achieved, comprehensive and multi-directional terrain flatness measurement processing on a measurement area is greatly facilitated, and the terrain flatness measurement efficiency is effectively improved.

The utility model discloses a flatness detection device for constructional engineering detection, which relates to the technical field of flatness detection for constructional engineering detection and comprises a moving device, the moving device comprises a wheel carrier, one end of the wheel carrier is fixedly connected with one end of the lower surface of a base, and one end of the upper surface of the base is fixedly connected with one end of an adjusting lifting arm. The inner side of the adjusting lifting arm is slidably connected with the outer circle surface of an adjusting column, and the outer circle surface of the adjusting column is slidably connected with one end of a lifting handle. Through the arrangement of the parallelism detection device, parallelism measurement can be carried out on different building wall surfaces and building materials, the use range is wide, the flatness of the wall surfaces can be rapidly measured, the operation is convenient, the operation is rapid, the measurement process is simple and easy during measurement, whether the wall surfaces are horizontal or not is measured through height difference, and the work efficiency is improved. The device can be suitable for various building environments, is simple to disassemble and assemble, and can quickly detect four corners during detection.

The utility model discloses a surface roughness detection device for a skin-friendly thermoplastic polyurethane film, comprising a mounting structure and a rotation detection structure, wherein the rotation detection structure is mounted on a table for transmitting the film through the mounting structure. Through the above method, the utility model discloses a surface roughness detection device for a skin-friendly thermoplastic polyurethane film, which adopts a rotation detection structure, can detect the surface roughness of the film by friction, has a simple structure, and greatly saves manufacturing costs.

The utility model discloses a flatness measuring device for building engineering construction, which relates to the field of measurement and comprises a mounting plate, a measuring scale and gradienter, the measuring scale is positioned below the mounting plate, the gradienter is fixedly mounted on two sides of the top of the measuring scale, a sphere mounting ring is fixedly mounted in the center of the mounting plate, and the sphere mounting ring is fixedly mounted on the mounting plate. And an adjusting ball body is movably mounted in the ball body mounting ring. According to the utility model, the angle of the lower measuring scale can be adjusted and changed by utilizing the rotation movement of the adjusting ball body around the ball body mounting ring, and the device is matched with the flatness measurement of planes at different angles, so that the device can quickly adjust the angle according to the measured angle to realize the measurement fitting and press the spring support rod to retract into the support sleeve rod during the measurement, and the measurement precision is improved. The three foot pads can be matched with planes of different heights to be attached through contraction of the spring supporting rods, and flatness measurement of the device is further facilitated.