2972results about "Using mechanical means" patented technology

The present invention relates to a humidity sensor, and more particularly, to a resistance film-type real-time chromogenic humidity sensor produced with a polyelectrolyte thin film. The humidity sensor according to the present invention is a chromogenic hygrometer in which a polyelectrolyte nano thin film that absorbs moisture is formed on a reflective layer, and the nano thin film varies terms of color and electrical resistance as moisture is absorbed and the thickness varies. The hygrometer according to the present invention is a dual-function hygrometer, the color and resistance of which vary. Provided is the chromogenic hygrometer in which the sensor made using a PSS-b-PMB thin film varies in color between purple, blue, green, yellow, orange, and red according to humidity at a very high response speed of within one minute.

The invention relates to a dynamic adjust gyroscope life forecasting method based on gray model. By data collection of vibration effective value, random drift and environmental temperature parameter which are preprocessed using radial neural networks, influence of environmental temperature on vibration effective value and random drift is eliminated and random drift and effective value just related to time are obtained by subtracting drift constant value term, then trend term of vibration effective value and random drift are extracted by using wavelet transformation and gray model are built separately for their trend term. The smaller data in two values of life predicted of dynamic adjust gyroscope unless two predicted values exceeding performance parameter limitation when dynamic adjust gyroscope is considered losing effect. The invention uses performance parameter of life probative period of product to predict its life, showing discipline of performance parameter and life of dynamic adjust gyroscope. It is easy and convenient economical and reliable.

The invention discloses a rubber product quality detection method and system, and relates to the related technical field of rubber quality detection.The method comprises the steps that rubber products are conveyed to a target detection table, and data acquisition of the rubber products is executed; inputting the wave impedance distribution data and the surface heat distribution gradient field into a defect causal atlas channel to execute phase inversion fusion processing, establishing a cross-modal coupling phase tensor, and identifying deep defect response characteristics by solving a phase difference matrix; activating a pressure spectrum sensing unit to apply control pressure, reading a local mechanical response spectrum, sending the local mechanical response spectrum to a cross-modal calibration layer, and executing joint error authentication; and performing quality detection report according to a self-calibration defect mapping result. The technical problems that in the prior art, multi-modal sensing data fusion efficiency is low, deep defects are difficult to comprehensively recognize, and consequently the quality detection precision and reliability of rubber products are insufficient are solved, and the technical effects that cross-modal cooperative detection is achieved, and the precision and reliability of defect recognition results are improved are achieved.

The invention provides a method for automatically centering and assembling a bearing on a long-axis part, and belongs to the technical field of bearing assembly.The method comprises the steps that position information of the long-axis part and the bearing is collected in real time through a binocular camera and a laser distance measuring sensor, a central line equation is calculated through the least square method, and position deviation is determined; a centering adjustment vector is generated to control a multi-degree-of-freedom precise attitude adjustment platform to perform preliminary adjustment, a mechanical arm is matched with high-precision laser ranging to perform precise centering, the centering process is modeled into a weighted undirected graph, an optimal adjustment path is solved, optimal press fitting parameters are calculated based on a bearing press fitting physical mechanics equation, and press fitting is performed. Meanwhile, the assembling process is monitored through a force sensor and a displacement sensor, an assembling quality evaluation matrix is constructed, finally, the assembling result is detected and evaluated, and high-precision automatic assembling of the long-axis part and the bearing is achieved.

The utility model discloses a soil moisture tensiometer, which belongs to the technical field of soil moisture tensiometers, and comprises a glass tube, a fixing component is arranged on the peripheral side of the bottom of the glass tube, a plug is arranged at the top end of a pressure monitoring device, a mounting sleeve is arranged below the plug, and the mounting sleeve is fixedly connected to the outer side of the top of the glass tube. A water supplementing and exhausting assembly is arranged on one side of the mounting sleeve. According to the water purifier, a worker manually presses a circular plate to drive a fixing rod and a piston to move, purified water stored in a fixing barrel is conveyed into a connecting block, and when the pressure of the connecting block is larger than the elastic force of a spring, water flow of the connecting block can drive a ball head block, a side block and a tooth block to move; at the moment, the liquid is conveyed into the glass tube through the stepped through hole and the one-way water inlet so as to perform water replenishing treatment on the interior of the glass tube, so that the mounting and dismounting work of the plug is reduced, the influence on the sealing performance of the plug after a long time is prevented, and the influence on the monitoring precision of a product is further prevented.

The invention relates to the technical field of tensile tests, and discloses a building sealant stretching performance test device, which comprises a test box, a first clamp, a loading block, a linear driver and a driving mechanism, a door plate is mounted on the front of the test box; the first clamp is installed at the top in the test box, the loading block is arranged in the test box, located below the first clamp and driven by the linear driver to move up and down, a through loading channel is formed in the loading block, and a cylinder is arranged in the loading channel and driven by the driving mechanism to rotate; a through assembly channel is formed in the cylinder body, and a transversely-arranged guide rail body is installed in the assembly channel. According to the invention, by carrying out stretching, torsion, inclined stretching, tearing stretching, winding stretching and testing in a low-pressure environment on the sealant, the mechanical properties of the sealant under complex working conditions can be comprehensively evaluated, the testing precision and reliability are improved, the actual engineering requirements are met, and meanwhile, the testing safety and environmental protection property are ensured.

The invention discloses tendon rope transmission system performance integrated testing equipment and a transmission system testing method, and belongs to the technical field of robot part testing. The equipment comprises a rack and a performance testing device, wherein the performance testing device comprises a mounting plate provided with an arc-shaped guide rail chute, a core shaft used for simulating a bending radius, a position adjusting mechanism used for accurately positioning the core shaft and clamping a tendon rope jacket, at least one linear driving mechanism capable of adjusting an angle along the chute, and a counterweight mechanism. A clamp of the linear driving mechanism clamps one end of an inner core of the tendon rope, the counterweight mechanism is connected with the other end of the inner core, the middle part of the tendon rope bypasses the mandrel, and the reciprocating motion applied by the linear driving mechanism is matched with the constant tension applied by the counterweight mechanism so as to simulate the working condition of the tendon rope under a specific bending radius and angle.

The invention relates to the technical field of insertion and extraction force testing, and discloses a detection device and method for automobile exterior trimming part assembling, and the device comprises a bottom frame, a tension testing assembly, a vibration mechanism, and an extrusion mechanism, the vibration mechanism comprises a gear-missing column, a moving plate, a first electric push rod, a placing plate, and a vibration spring, and the bottom frame is provided with a sliding groove. The moving plate is slidably connected into the sliding groove, the first electric push rod is fixedly installed in the sliding groove, the output end of the first electric push rod is fixedly connected with the side wall of one end of the moving plate, one end of the vibration spring is fixedly connected to the bottom frame, the placing plate is fixedly connected to the other end of the vibration spring, and a mounting block is arranged on the bottom frame. According to the device, the vibration mechanism and the extrusion mechanism are matched, so that the bumper support on the placement plate continuously shakes, various road surface vibrations borne by an automobile in the driving process are simulated, and the reliability of the buckle under long-term vibration is accurately evaluated.

The invention provides a tunnel backfill compactness estimation method and device, a terminal and a medium. The method comprises the steps that vibration response information and real-time settlement information are obtained; performing feature extraction on the vibration response information to obtain response frequency spectrum information; inputting the response frequency spectrum information and the real-time settlement information into various machine learning models to obtain various backfill compaction degree estimation data; and performing fusion processing on the multiple backfill compactness estimation data through a Bayesian triangular cap fusion method to obtain fusion compactness estimation data. According to the method, the Bayesian triangular cap fusion method is utilized to integrate the backfill compactness estimation data based on the machine learning algorithm, the final fusion compactness estimation data is generated, and the prediction precision of the tunnel backfill compactness is improved. The efficiency of tunnel backfill compactness detection is improved, the detection period of the tunnel backfill compactness is shortened, and continuous automatic monitoring of a large-range tunnel backfill layer is achieved.

The invention discloses an ultra-high-speed three-dimensional laser scanning pavement skid resistance evaluation method and system, and the method comprises the steps: scanning a target pavement through a three-dimensional laser scanner, obtaining the three-dimensional point cloud original data of the pavement, carrying out the preprocessing of the three-dimensional point cloud original data of the pavement, and carrying out the calculation of the three-dimensional point cloud original data of the pavement; constructing a road surface three-dimensional texture model according to the preprocessed road surface three-dimensional point cloud data, constructing a reference surface of a target road surface, projecting the reference surface into the road surface three-dimensional texture model, extracting a plurality of feature parameters related to the anti-skid performance of the road surface based on the projected road surface three-dimensional texture model, and calculating the anti-skid performance of the road surface according to the extracted feature parameters. According to the method, the weights of the extracted multiple characteristic parameters related to the anti-skid performance of the road surface are determined, the multiple characteristic parameters are subjected to weighting processing, and the environment penalty factor is introduced to correct the weighting processing result to obtain the anti-skid performance index, so that the anti-skid performance of the target road surface is evaluated by using the anti-skid performance index, and the evaluation accuracy of the anti-skid performance of the target road surface is improved. Therefore, the evaluation accuracy and evaluation efficiency of the anti-skid performance of the road surface are improved.

The invention discloses a concrete quality three-level monitoring device and method, and belongs to the technical field of concrete construction. The method aims at solving the cracking problem caused by factors such as temperature stress and shrinkage stress in mass concrete construction and the key technical problems such as data islanding phenomenon and regulation and control lag in an existing monitoring method. According to the technical scheme, a three-level monitoring system of pouring layer-cooling layer-structural layer is constructed, and various key parameters such as temperature, humidity, flow velocity and cooling water flow of concrete in pouring, cooling and stabilizing stages are accurately monitored in real time; the central controller is used for carrying out real-time analysis processing and dynamic regulation and control on the data, so that comprehensive, accurate and continuous monitoring on the concrete construction quality is realized; the method is mainly applied to monitoring scenes of mass concrete construction quality, concrete cracking can be effectively prevented, the engineering quality and safety are remarkably improved, and reliable technical guarantee is provided for the concrete construction industry.

The invention discloses a road surface friction coefficient estimation method, device and equipment. The method at least comprises the steps that image data, collected by a vehicle camera, of a driving road surface and point cloud data, collected by a first sensor, of the driving road surface are acquired; determining a target fusion feature at least based on the image data and the point cloud data; the target fusion feature is a multi-dimensional pavement feature related to a friction coefficient; at least processing the target fusion feature through an estimation model, and determining a target friction coefficient of the vehicle driving road surface; the estimation model is a trained model used for determining the friction coefficient at least based on the fusion features. The road surface friction coefficient estimated by the scheme is more accurate.

The invention relates to the technical field of wheel performance testing, in particular to a laboratory testing method and system for representing the gripping performance of tire tread rubber on a wetland epoxy floor. According to the method, a thin water film of 10-100 microns is stably maintained on a representative epoxy substrate through online thickness measurement and closed-loop film control, a mu-slip rate curve is obtained at the slip rate of 0.1-10%, mu 0, mu max, delta mu and mu 10% are extracted and are subjected to in-situ fusion with British pendulum BPN under the same substrate and the same film thickness, and a wetland epoxy comprehensive grip index (WEGI) is formed. According to the method, the repeatability under the thin water film working condition and the comparability between laboratories are remarkably improved; embodiments show that the introduction of a small amount of LSBR and fine cutting grooves can synchronously improve [mu] max and BPN, while the repeatability of uncontrolled film, non-representative substrate or real vehicle test is poor. The method is suitable for rapid optimization of a new energy automobile tire tread formula.

The invention relates to the technical field of building detection, and discloses a building retard-bonded prestress intelligent detection method based on the Internet of Things. The method comprises the steps of collecting and preprocessing real-time monitoring data of the retard-bonded prestressed structure through an Internet of Things platform, and filtering interference signals to improve data quality; classifying the preprocessed data according to a preset stress state interval, and extracting time-space domain features of each interval to generate a stress feature set; detecting the change frequency of the stress state interval, and starting a dynamic adjustment mechanism to mark an abnormal interval if the change frequency exceeds a threshold value; according to the matching degree of the historical damage mode of the structure and the current feature, a non-abnormal interval stress feature set is decomposed to generate a damage feature subset, multi-parameter collaborative correction is carried out in combination with the incidence relation of material mechanics and environmental action parameters, and finally the position of a potential damage source is reversely traced along a damage evolution path. And determining a maintenance priority and generating a maintenance instruction.

The invention belongs to the technical field of nondestructive testing, and particularly relates to a nondestructive evaluation method for the interface bonding strength of a coated grain, and the coated grain is a solid propellant at least provided with a coating layer and a lining layer; the method comprises the following steps: heating a coated grain to be detected in a water bath; the heated coated grain to be detected is subjected to negative pressure loading, and a speckle interference image of the surface of the coated grain to be detected is obtained through a high-vibration-resistance electronic speckle interference system; extracting an out-of-plane displacement field in the speckle interference image; evaluating the interface bonding strength of the coated grain based on the extracted out-of-plane displacement field; wherein the coated grain to be detected has a weak viscosity defect. Compared with the prior art, the method provided by the invention solves the problem that the existing nondestructive testing method is difficult to distinguish and screen the interface bonding strength of the coated grain with weak bonding defects. According to the scheme, lossless and high-resolution detection of the coated grains with the weakly-sticky defects is realized, and the method can be used for relative comparison and quality evaluation of the interface bonding strength between the coated grains with the weakly-sticky defects.

The utility model discloses an asphalt pavement indoor skid resistance and wear resistance test device which comprises a constant temperature and humidity chamber and a console for regulating and controlling parameters in a test process, the constant temperature and humidity box comprises an upper box body and a lower box body which are communicated with each other, a temperature and humidity control device is mounted in the lower box body, an acceleration loading device is mounted in the upper box body, and the console is connected with the acceleration loading device. The device disclosed by the utility model can be used for simulating the damage to the skid resistance and wear resistance of the asphalt pavement in the driving process of a vehicle under the conditions of different loads, speeds, temperatures and humidity, testing the wear resistance of the asphalt pavement, and monitoring and storing the skid resistance of the pavement in real time. The equipment is simple to operate, short in test period and convenient to transport, test conditions are easy to control, and convenient conditions are provided for asphalt pavement skid resistance and wear resistance indoor tests.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention provides an electrode and diaphragm interface contact performance testing device and method, and the device comprises a chamber, the middle part of the chamber is provided with a diaphragm installation platform, the middle part of the diaphragm installation platform is provided with an opening, and the opening is used for placing a diaphragm; a moving assembly is arranged in the upper cavity, and the moving assembly is configured to move towards the diaphragm mounting platform or move away from the diaphragm mounting platform when being started; a mounting part is arranged at one end, close to the diaphragm mounting platform, of the moving assembly and is used for mounting an electrode; the cavity pressure adjusting assembly is arranged in the upper cavity and / or the lower cavity and is configured to adjust the air pressure in the upper cavity and / or the lower cavity; the measuring assembly is configured to measure physical parameters of the electrode and / or the diaphragm and / or the cavity when the electrode presses the diaphragm downwards, and the physical parameters comprise a stress value and / or a displacement value and / or an air pressure value. The testing device can synchronously test the contact performance of the electrodes and the diaphragms in a one-to-one correspondence mode.

A tape measure, including a tape measure blade having a cross-sectional profile to increase standout is provided. The profile has a curved shape that increases standout. The tape blade may have a flat width greater than 33 mm.

The invention relates to a four-degree-of-freedom icing adhesion strength testing device and a testing method. The testing device comprises a fixed platform, and a refrigerating and freezing module and a four-degree-of-freedom motion testing module which are arranged on the fixed platform. The fixed platform comprises a flat plate and a height-adjustable telescopic rod. The refrigerating and freezing module comprises a refrigerating platform, a refrigerating plate inclination angle assembly and at least one ice making mold. The four-degree-of-freedom motion test module comprises a Z-axis moving sliding table, a Y-axis rotating inclination angle assembly, an X-axis moving sliding table, a Y-axis moving sliding table, a pull and push dynamometer clamp and a pull and push dynamometer; the pull and push dynamometer can drive ice blocks in the ice making mold to be separated from a test sample under the driving of the Z-axis moving sliding table, the Y-axis rotating dip angle assembly, the X-axis moving sliding table and the Y-axis moving sliding table. Compared with the prior art, the device has the advantages of high experiment efficiency, wide measurement range, adjustable experiment parameters, diversified measurement modes and the like.

The invention discloses a biological scaffold viscoelasticity evaluation method and related equipment, and aims to overcome the defects of an existing biological scaffold viscoelasticity test method and biological tissue suitability quantitative evaluation. The method comprises the following steps: determining a target implantation part, and acquiring force relaxation experimental data of a biological scaffold by using an atomic force microscope; judging a contact point of the probe and the bracket based on the data; determining the moment when the force signal is stable after the support is compressed to the preset deformation according to the contact point as a force relaxation starting point; calculating the characteristic time when the force value is attenuated to half by taking the starting point as a timing starting point as a microscopic viscoelasticity index; and finally, realizing quantitative evaluation of viscoelasticity suitability by comparing the characteristic time of the stent and the target tissue.

This disclosure describes a self-contained, user-removable and replaceable tape and reel cartridge assembly that is easily loaded into a tape measure housing in a slide-in fashion. The spring of the reel is charged (tensioned) and is maintained in this state during the loading of the assembly so that the user does not need to adjust spring state during the replacement process. This is achieved by configuring the tape and reel cartridge assembly with a bracket that loops around the reel and is torsionally coupled to an arbor (the central hub) of the reel. The bracket prevents the tape from unwinding from the spool during the replacement operation. Once the tape and reel assembly is installed, the device housing is closed and the device is immediately available for use.

The invention provides a bituminous coal caking index full-process detection system based on a mechanical arm and a use method thereof, which can realize the operation of the whole bituminous coal caking index detection process from blanking weighing to crucible testing and then cleaning and recycling through the mechanical arm, and can liberate laboratory technicians from a tedious, monotonous and harmful working environment. And intelligent, unmanned, specialized, technical and standardized caking index detection and inspection service is realized. The system comprises a blanking weighing module used for placing quantitative samples into a crucible; the bonding pre-treatment and post-treatment module is used for treating samples before and after coking; the high-temperature furnace module is used for performing high-temperature coking treatment on the sample; the mechanical arm is used for clamping a crucible or a crucible holder and circulating among the blanking weighing module, the bonding pretreatment and aftertreatment module, the high-temperature furnace module, the bonding rotary drum tester module, the cooling module and the cleaning module.

The invention relates to an experimental device for testing anchoring force of slips. The experimental device comprises an experimental bench; the experimental slip is used for simulating a plugging device or a packer and measuring the anchoring force between the experimental slip and the experimental pipeline; the radial force loading assembly is fixed with the experiment rack and is used for applying radial force to the experiment slip; and the axial force loading assembly is fixed with the experiment bench and is used for applying axial force to the experiment slip. According to the invention, the measurement precision of the slip anchoring force is greatly improved.

The invention discloses an intelligent detection system and method for the adhesive force of a galvanized wire strip steel zinc layer, and belongs to the field of material detection.The intelligent detection system comprises a stamping male die, a strip steel female die and a female die platform, the stamping male die is used for stamping strip steel, the strip steel female die is arranged below the stamping male die and placed on the female die platform, and the stamping male die is used for stamping the strip steel; and a movable guide rail is arranged below the female die platform. The die further comprises a high-definition camera system, a computer control system and a hydraulic system. The problem that an existing detection method is difficult to meet the rapid detection requirement of a continuous galvanizing production line is solved, the adhesive force of the zinc layer of the galvanized plate is detected through stamping deformation, the movable female die platform is adopted to adapt to galvanized plates of different thicknesses, the tedious process of female die replacement is avoided, the whole plate covering width of a stamping die is wide, multiple times of stamping are not needed, and the production efficiency is improved. The high-definition camera system collects images, the computer control system automatically recognizes dezincification and cracks, personal errors are avoided, the steel coil is automatically blocked and an operator is reminded when detection is unqualified, and the product quality is ensured.

The invention relates to the technical field of hydraulic element testing, in particular to a high-pressure axial plunger pump bearing bush pair interface friction and oil film characteristic testing device. According to the device, 10-60 MPa adjustable oil pressure is provided through the hydraulic pipeline unit, the driving unit achieves power loading and friction monitoring through a servo motor and a torque sensor, the main body unit conveys high-pressure oil to a bearing bush contact face through an in-shaft cross-shaped oil duct structure to form a static pressure supporting oil film, and a micron-sized oil film sensor is integrated; the oil detection unit monitors oil parameters, and the signal acquisition and control unit performs closed-loop regulation on oil supply flow, motor rotating speed and swash plate load based on oil film thickness, torque and pressure signals. The method has the beneficial effects that 0.2 mu m-level oil film fracture identification is realized, the occurrence rate of dry friction is reduced by 82% through a cross-shaped oil duct in the shaft, and the oil film fluctuation rate lt is cooperatively controlled through multiple parameters; + / -3%, the safety interlocking mechanism responds abnormally within 0.3 s.

The invention relates to the field of measurement. A pillow inner comfortable sleep performance key index testing device comprises a base, a machine frame and an electric control system, the machine frame comprises a vertical stand column, an upper cross beam and a middle cross beam, a supporting plate is arranged on the base, and exhaust holes with the interval being 20 mm and the diameter being 6 mm are formed in the supporting plate; the electric control system is connected with the pressure sensor module, the lower part of the pressure sensor module is connected with the pressure head through the connecting rod, and the lower part of the pressure head is in a three-dimensional human head rear half model form; the electric control system is further connected with a laser height measuring instrument, and the laser height measuring instrument is controlled by the electric control system to move up and down along one vertical stand column and face the other vertical stand column. The pillow inner compression performance testing device provided by the invention is simple and convenient to operate and relatively low in cost; multiple key performances of the pillow inner can be detected at the same time, and the pillow inner finished product can be directly detected.

The invention provides an impervious wall joint pipe drawing monitoring device based on frictional resistance monitoring and a use method, the impervious wall joint pipe drawing monitoring device comprises a plurality of joint pipes which are lowered to the end part of a groove section of an impervious wall, and a detection device is fixedly arranged at the end part of the lowest joint pipe; the frictional resistance detection device comprises a control device, a side wall friction cylinder and a plurality of side resistance sensors, and a tilt angle sensor is further arranged in the detection device and used for monitoring the tilt angle of the connector pipe in real time and guaranteeing the lowering precision of the connector pipe. The method comprises the following steps: establishing a relationship between the frictional resistance of the end part of a joint pipe and the concrete strength in a concrete diaphragm wall pouring process through an indoor test, calculating the stress condition of the concrete at the end part of the joint pipe in the concrete diaphragm wall pouring process by using a finite element method, and determining a relationship between the concrete critical strength and the pipe drawing critical frictional resistance; therefore, the pipe drawing time is guided according to the frictional resistance measured by the detection device.

The invention discloses a multifunctional asphalt mixture rut test method which is implemented by using a device integrating loading and measurement, test piece supporting and temperature control drainage, environment simulation and optical measurement and a central control and data acquisition system. A test piece is arranged in the test piece groove, temperature control is realized through circulating a heat-conducting medium in the temperature-conducting cavity, different gradients are formed through the hoisting mechanism and the angle adjusting assembly, the test wheel is driven to perform one-way circulating loading along a closed track and snub at a preset moment, and rolling and sliding friction forces are synchronously collected; in the test process, rainfall is simulated by adopting the watering assembly, incoming water is recycled by the drainage tank, speckle images are acquired by the high-frequency industrial camera, and surface full-field displacement and strain are obtained through digital image correlation analysis. Through time registration and fusion of temperature, gradient, wheel speed, rainfall and friction-deformation data, rut deformation, skid resistance and apparent structure evolution laws of the asphalt mixture under multi-climate and multi-gradient conditions are obtained.