Abstract: Provided a full-automatic wheel hub feeding-blanking system for intelligent production line of automotive wheel hubs, comprising: an intelligent material rack and a robot; the intelligent material rack comprises a bracket assembly, a turntable assembly and a bearing seat assembly; the turntable assembly being rotatable is mounted on the bearing seat assembly; the bracket assembly mounted on the turntable assembly comprises a base provided with at least one group of lifting devices, and each the group comprises three the lifting devices, and each of which an automotive wheel hub supporting plate assembly is provided on, central axis of the three automotive wheel hub supporting plate assemblies forming the angle of 120 degrees; the robot being mounted on one side of the intelligent material rack and comprises a robotic arm, and a manipulator is mounted on the robotic arm, and the manipulator is used for clamping the automotive wheel hub.

Abstract: A hydrodynamic water blocking device for an underground garage includes a water blocking plate assembly and side rail assemblies, wherein the water blocking plate assembly includes a first water blocking element, one end of the first water blocking element is rotationally connected with a base, the other end of the first water blocking element is rotationally connected with one end of a second water blocking element, the first and second water blocking elements have foamed layers, the base has grooves capable of accommodating the embedded foamed layers, water inlets formed in the base communicate with the grooves, each of the side rail assemblies includes a side plate with an ascending rail including a horizontally disposed linear rail and an arc-shaped lifting rail, the second water blocking element has a walking assembly embedded in the ascending rail which is connected with a driving mechanism installed at the second water blocking element.

Abstract: A fiber pre-dispersing device for fiber reinforced concrete, comprising: a dispersing chamber, a feed inlet is installed on the upper side of a dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged at both sides of dispersing chamber, supporting legs are installed in the grooves.

Abstract: A fertilizer grinding mechanism, a water and fertilizer mixing device, and an aqueous fertilizer solution preparation production line. A fertilizer receiving body, where an edge is provided with a arranged first channel; a connecting body, fixed to a bottom of the fertilizer receiving body and provided with a second channel with the first channel, a bottom of the second channel is communicated with a buffer bin, a pushing block is arranged in the buffer bin, and the pushing block is connected with a drive mechanism for driving the block to move in direction of the body; and an inner grinding block, where the block is fixed to a bottom of the connecting body, an outer side of the inner grinding block is with a vertically movable grinding roller, the pushing block can push fertilizer under vertical movement of the roller. The grinding mechanism has a heat dissipation effect.

Abstract: Disclosed is a continuous feeding mechanism including a transfer mechanism, wherein the transfer mechanism includes a rotatable indent roller circumferentially provided with a plurality of blanking grooves; a post pin is arranged in each blanking groove; the post pin is connected with a spring; the spring is arranged towards the interior of the indent roller; and the post pin can move along the blanking grooves; a feeding box, wherein the bottom of the feeding box is hollow, and the bottom is arranged above the indent roller or the bottom is fixedly connected with the indent roller; the continuous feeding mechanism is arranged above one side of the transfer mechanism; and an electromagnetic heating mechanism which includes a supporting frame, wherein the transfer mechanism is arranged in the supporting frame, and an electromagnetic coil is circumferentially arranged outside the supporting frame.

Abstract: A system for machining and positioning an automobile hub and a production line for intelligent cleaning and precision, including upper and lower mounting plates connected vertically. At least three U-shaped blocks are fixed on a top surface of the upper plate. An L-shaped support is mounted between every two blocks, including a screw-equipped ball head disposed thereon. The support is driven by a first driving apparatus to move along the upper mounting plate. A slidable chuck is disposed in each block, with a push rod assembly connected to the bottom. The assembly is driven by a second driving apparatus to move along the upper mounting plate with the chuck. Three wedges are circumferentially fixed on a top surface of the lower plate and are driven by a third driving apparatus to move along the lower plate. Inclined surfaces of the wedges are mated with bottoms of the push rod assemblies.

Abstract: Provided is a fixture for automatic assembly, overturning and welding of sidewall aluminum profile of a rail vehicle, comprising a lifting mechanism, a supporting overturning device mounted on the lifting mechanism, an automatic assembling sidewall profile device mounted on the supporting overturning device, and a self-positioning locking device. The automatic assembling sidewall profile device comprises a sidewall-shaped support steel beam, and a rodless cylinder track platform and a fixing seat. The self-positioning locking devices are mounted on the rodless cylinder track platform and the fixing seat, and have a self-positioning base and a locking device. The self-positioning base comprises an outer housing is provided with the locking device and two symmetrically set self-positioning supports, and faces of the two self-positioning supports matching with the rail vehicle aluminum profile are provided with rollers having a V-shaped gap formed therebetween.

Abstract: A micro-nano 3D printing device with multi-nozzles jet deposition driven by electric field of single flat plate electrode, including: a printing head module group, printing nozzle module group of any material, printing substrate of any material, flat plate electrode, printing platform, signal generator, high-voltage power supply, feeding module group, precision back pressure control module group, XYZ three-axis precision motion platform, positive pressure air circuit system, observation and positioning module, UV curing module, laser rangefinder, base, connection frame, first adjustable bracket, second adjustable bracket, and a third adjustable bracket; the device realizes high throughput micro-nano 3D printing of jet deposition, including different configuration implementation schemes like multi-materials with multi-nozzles, single material with multi-nozzles and single material with multi-nozzles array, improves the printing efficiency, and realizes multi-materials macro/micro/nano printing, high-aspect-rat

Abstract: The present application belongs to the technical field of monitoring of durability of concrete, and particularly relates to a method for optimizing a structure of an electrical capacitance tomography sensor and analyzing an electromagnetic field. A specific process of the method includes eight steps: parameter setting, geometric setting, material setting, mesh generation, physical field setting, solution, sensor structure optimization and calculation of electromagnetic field distribution. The method proposes a new concept for solving a forward problem of an ECT system based on COMSOL software. After modeling is completed, uniformity of a sensitive field of the ECT sensor is analyzed according to calculation results, and structural parameter values of components of the ECT sensor are adjusted to seek an optimal design scheme.

Abstract: The present disclosure provides a carbide blade grinding forming processing production line, relates to the field of blade processing in forming, and provides a production line for grinding forming processing of a carbide blade with inscribed circular holes, which has functions of blade grinding forming processing, blade cleaning and drying and detection of external dimension of a formed blade, and has an automatic loading and uninstalling function. In most processing course of the blade, the cutter head is taken as a carrier, and an overturning device is configured to overturn a whole cutter die box, such that integral end surface overturning of the cutter head in the cutter die box after single end surface grinding is realized, and blade filling processes in different processing links are reduced.

Abstract: A super-lubricity water lubricating additive, a super-lubricity water lubricant, a preparation method and application, wherein the additive is of a hollow spherical shell structure which includes at least one layer of spherical shell; the spherical shell sequentially includes a first polydopamine layer, a nanoparticle layer, a second polydopamine layer and an oxidized graphene layer from inside to outside, or a first polydopamine layer, a nanoparticle layer, a second polydopamine layer, a graphene layer and a third polydopamine layer from inside to outside; and nanoparticles of the nanoparticle layer are nano diamond, nano molybdenum disulfide or nano tungsten disulfide. The additive is prepared into a uniform aqueous solution to obtain the super-lubricity water lubricant. The additive can be easily adsorbed on a dual surface, and the nanoparticles released in a friction process cooperate with spherical oxidized graphene or graphene to form rolling friction so as to reduce frictional abrasion.

Abstract: A method for preparing a static/dynamic three-dimensional (3D) microcrack propagation sensor, a sensor and equipment, belongs to the field of sensor technology.

Abstract: An apparatus and a method for testing water absorption of concrete in a direction parallel with load applying direction are provided. The apparatus includes a loading device, a water filling device, and a monitoring device. The loading device includes an upper support plate and a lower support plate connected with the upper support plate via multiple threaded rods, and a space for placing a concrete specimen formed between the upper support plate and the lower support plate. The water filling device includes a water filling cylinder having a side connected with a water supply tank via an inlet pipe, and another side connected with a water storage tank via an outlet pipe. The monitoring device includes a mass sensor arranged under the water storage tank and a strain gauge for detecting change of stress of the concrete specimen.

Abstract: A 3D printing device and method for integrated manufacturing of functionally gradient materials and three-dimensional structures. The device includes an active and passive mixing and printing module and a constraining and sacrificial layer printing module. An input end of the active mixing module connects to multiple anti-settling feeding modules, and an output end of the active mixing module connects to the passive mixing and printing module. The passive mixing and printing module and the constraining and sacrificial layer printing module are mounted on one side of an XYZ three-axis module. The constraining and sacrificial layer printing module connects to a constraining and sacrificial layer feeding module and prints and forms a functionally gradient three-dimensional structure.

Abstract: The present invention relates to a detection method for an assembly body multi-view change based on feature matching, comprising the following steps: S1, acquiring a first image and a second image; S2, performing feature point extraction and feature matching on the first image and the second image to obtain a matching pair set, a first unmatched point set of the first image and a second unmatched point set of the second image; S3, acquiring a first to-be-matched area set of the first image according to the first unmatched point set; acquiring a second to-be-matched area set of the second image according to the second unmatched point set; S4, performing feature matching on each first unmatched area and each second unmatched area one by one to obtain a plurality of matching results; and S5, outputting the assembly body change type according to the plurality of matching results.

Abstract: A slurry scraping mechanism and an applying and scraping device used in an SG abrasive production process includes a scraping master support; a scraper, wherein the scraper is connected with the scraping master support through a suspension component such that the scraper is suspended, and a damping spring is arranged in the suspension component; and a torsion spring adjusting component, wherein the torsion spring adjusting component includes a plurality of torsion springs supported by a torsion spring support shaft, the torsion spring support shaft is fixed to the scraping master support, the torsion spring support shaft is movable up and down relative to the scraping master support, the torsion springs are clamped in a V-shaped plate, an end side of the V-shaped plate is connected with the scraping master support, and a side surface of the V-shaped plate is connected with the scraper.

Abstract: Provided are a testing apparatus for a pile end settlement of a rock-socketed driven PHC tube pile and an installation method thereof. The testing apparatus comprises a PHC tube pile, two measuring tubes, a cross pile tip, a pile tip steel plate, a fixer fixed in the PHC tube pile, a perforated steel plate located at a pile top of the PHC tube pile and a jack pressed on the perforated steel plate. The two measuring tubes are symmetrically arranged, the fixer is provided with two first measuring tube outlet holes, and the two measuring tubes respectively pass through the first measuring tube outlet holes of the fixer; and the perforated steel plate is also provided with two second measuring tube outlet holes, and the two measuring tubes respectively pass through the second measuring tube outlet holes of the perforated steel plate. (FIG.

Abstract: An assembly change detection method based on attention mechanism, including: establishing a three-dimensional model of an assembly body, adding a tag to each part in the three-dimensional model, setting several assembly nodes, obtaining depth images of the three-dimensional model under each assembly node in different viewing angles, and obtaining a change tag image of a added part at each assembly node; selecting two depth images at front and back moments in different viewing angles as training samples; performing semantic fusion, feature extraction, attention mechanism processing and metric learning sequentially on the training samples, training a detection model, continuously selecting training samples to train the detection model, saving model parameters with optimal similarity during training, completing training; and obtaining depth images of successive assembly nodes during assembling the assembly body, inputting depth images into trained detection model, and outputting change image of added part of the

Abstract: The present invention discloses a positioning system with an adjustable clamping force and a milling equipment for a rail transit honeycomb workpiece.

Abstract: A measuring device for pore throat pressure of Jamin effect based on mechanochromic materials is provided and includes: a bubble pressurization part, configured to inject bubbles into a microscopic visualization test part; the microscopic visualization test part including a mechanochromic material and a pore throat structure, configured to characterize changes of pore throat pressure during bubble injection; a waste liquid recycling part, configured to recycle bubble waste liquid passing through the microscopic visualization test part; a data acquisition and analysis part, configured to acquire changing data of the pore throat pressure in the microscopic visualization test part and analyze the changing data to obtain the pore throat pressure. The device is simple in structure and easy to operate, and provides a method for measuring an internal surface pressure of an object. The method can realize a real time measurement of the pore throat pressure of Jamin effect.