1830 results about "Rectangular array" patented technology

The invention provides an automatic positioning and cleaning device for detecting the strength of a concrete test block, the automatic positioning and cleaning device comprises a base, the top of the base is fixedly provided with vertical support rods in a rectangular array, the tops of the four support rods are fixedly provided with a mounting plate, and the mounting plate is fixedly provided with a vertical electric cylinder; a piston rod of the electric cylinder is fixedly provided with a mounting block, and the bottom of the mounting block is provided with a pressure detection assembly. According to the device, the detection position of the concrete test block is automatically positioned, so that a worker does not need to manually place the concrete test block at the center of the top of the lower pressing block, and the device is relatively convenient; when concrete is unqualified and strength detection is carried out on the concrete, a moving mechanism is controlled to act to enable a connecting block to be far away from a fixing block and enable a cleaning shell to move to one side, far away from a supporting plate, of a lower pressing block, so that fragments at the top of the lower pressing block can be cleaned through two cleaning brushes, and workers do not need to manually clean the fragments; and the workload of workers is reduced.

The invention relates to the technical field of molds, and particularly discloses a multi-point forming mold which comprises an upper mold and a lower mold, the upper mold and the lower mold each comprise a mold base, a plurality of pressing head assemblies and a plurality of guiding pieces, the multiple pressing head assemblies are fixedly connected into the mold bases in a rectangular array mode, each pressing head assembly comprises a motor, a screw, a thread sleeve and a forming pressing head, and the motor is used for driving the screw to rotate; the screw is in threaded connection with the threaded sleeves, the forming pressing head is arranged at the end, away from the motor, of the screw and extends out of the threaded sleeves, the multiple guiding pieces are fixedly connected into the mold base in a rectangular array mode, the threaded sleeves are connected to the two sides, in the first direction and the two sides, in the second direction, of the guiding pieces correspondingly, and the threaded sleeves are slidably connected with the guiding pieces and can slide in the height direction of the guiding pieces. The first direction is perpendicular to the second direction. The multiple pressing head assemblies can be connected into a whole through the multiple guiding pieces, so that the transverse rigidity of the multi-point forming die is improved, meanwhile, the guiding pieces guide ascending and descending of the threaded sleeve, and the accuracy of the ascending and descending action of the threaded sleeve is guaranteed.

A modular and expandable storage rack for quick assembly and disassembly includes a plurality of first connecting pieces, a plurality of second connecting pieces, a plurality of third connecting pieces, a plurality of fourth connecting pieces, a plurality of support rods, and a plurality of storage partitions, which are distributed in a rectangular array respectively. Each storage partition includes four connecting rods. Each first connecting piece, each second connecting piece, each third connecting piece, and each fourth connecting piece include a longitudinally-extending hollow tube and different quantity of side hollow tubes respectively to receive at least one corresponding support rod and at least one corresponding connecting rod. One opposing end of the first longitudinally-extending hollow tube is fixedly provided with a first bump for attaching to an outer side of one corresponding support rod.

The novel traffic cone comprises a framework, the framework comprises bamboo plates, a circular ring and a connecting plate, the framework is in the shape of a circular truncated cone, the multiple bamboo plates are distributed in an annular array mode and serve as the circular truncated cone curved surface of the framework, the circular ring is located at the bottom of the framework, and the connecting plate is connected with the circular ring. The outer surfaces of the circular rings are fixedly connected with the multiple bamboo plates, and the connecting plate is located at the top of the framework and is cylindrical. According to the traffic cone, by arranging the balancing weight and the buckle, the weight of the bottom of the traffic cone is increased, the wind resistance of the traffic cone is effectively improved, and the traffic cone can be kept stable even in the environment with large wind power. And the rectangular array distribution of the balancing weights ensures that the traffic cone can be uniformly stressed under the action of external force and is not easy to topple over. The gravity center of the traffic cone can be changed by adjusting the balancing weights on part of the bamboo plates, so that the traffic cone is suitable for a road surface with a gradient, and the applicability and the stability of the traffic cone are enhanced.

A lead frame transferring and stacking device relates to the field of semiconductor production, and comprises a support frame, two ends of which are provided with support rings in the length direction; the turnover mechanism comprises two gear rings which are rotatably mounted on the inner sides of the supporting rings respectively, two bearing plates which are symmetrically arranged and are parallel to the supporting frame in the length direction are arranged between the gear rings, the turnover mechanism is used for placing a transfer frame, and a plurality of lead frames are arranged on the transfer frame in a rectangular array mode; two stop levers which are symmetrically arranged and reciprocate in the width direction of the bearing plate are arranged on the bearing plate, the length direction of the stop levers is parallel to the axis of the gear ring, and the stop levers are used for limiting the lead frame; the bearing mechanism comprises two supporting plates which are arranged on the two sides of the supporting frame in the length direction respectively and move in the width direction and the vertical direction of the supporting frame, a plurality of material frames arranged at intervals are arranged on the top faces of the supporting plates in the length direction of the supporting plates, and during application, the upper ends of the material frames abut against the transfer frame and are used for collecting the lead frames. According to the device, the lead frames can be automatically stacked in the material frame, and the efficiency is improved.

The invention provides a composite Helmholtz sound absorption structure with a porous material as a substrate, the composite Helmholtz sound absorption structure comprises a plurality of Helmholtz sound absorption units with different absorption peak frequencies, the Helmholtz sound absorption units are arranged in a periodic rectangular array, the sound absorption directions of the Helmholtz sound absorption units are the same, and the Helmholtz sound absorption units are connected in parallel. When the composite Helmholtz sound absorption structure absorbs sound, a strong coupling relation is formed between the Helmholtz sound absorption units so as to optimize the sound absorption performance of the composite Helmholtz sound absorption structure. Under the condition of limited thickness, the Helmholtz sound absorption units which are arranged in a periodic array and are connected in parallel can be utilized to realize high-efficiency sound absorption at a low frequency band.

The utility model relates to the technical field of flour processing, and discloses highland barley flour processing equipment which comprises a processing box, four supporting legs are fixedly installed at the bottom of the processing box, the four supporting legs are arranged at the bottom of the processing box in a rectangular array mode, a controller is arranged on the surface of the front end of the processing box, and the controller is connected with the processing box. The highland barley flour processing equipment comprises a processing box, a top cover is movably installed at the top end of the processing box, a feeding port is formed in the top end of the top cover, and a collecting hopper is movably inserted in the position, close to the middle, of the interior of the processing box. Due to the fact that the protruding blocks are arranged on the screen, when the protruding blocks beat the screen, the screen can shake continuously, the ground highland barley flour is sieved, and some caked impurities in the highland barley flour can be well left on the filter screen; and meanwhile, the filter screen is continuously flapped by the convex blocks, so that the condition that the screen is blocked when the highland barley flour is sieved can be well prevented.

The invention relates to a net cage array for deep and far sea culture and a method for culturing modestus septentrionalis, and belongs to the technical field of aquaculture facilities, the net cage array is a square or rectangular array composed of net cages, and the net cages can sink and float and sink to a certain depth below the water surface; the net cages are regularly distributed in rows and columns; the invention further provides a method for culturing the nadon septentrionalis by using the net cage array, and the method comprises the following steps: putting fishes with strong swimming ability into the first to second rows of net cages in the head-on mainstream direction and the first row of net cages in the non-mainstream direction or putting a proper amount of large-sized nadon septentrionalis; net cages located in the net cage array and behind the net cage array are used for normally breeding the septentrionus septentrionalis with the overall length being 10 cm or above. According to the net cage array type regular arrangement, the flow velocity intensity is reduced, the net cage sinks to a certain depth, the influence of extreme weather such as high temperature is avoided, and the rumex septentrionalis which is weak in swimming capacity and does not resist high temperature and low temperature can also be bred in deep and far sea.

The invention discloses a millimeter wave terahertz microstrip-to-waveguide feed structure and a debugging method thereof. The feed structure comprises a PCB, the PCB is provided with a plurality of metalized through holes, the plurality of metalized through holes are arranged in a rectangular array, and the top of the PCB is provided with a microstrip line; the filling medium is filled in the metalized through hole, and the size of the filling medium is calculated according to the following formula: lambda 1 = lambda / (epsilon r) 0.5, and lambda 1 is the diameter of the filling medium, mm; lambda is the transmission wavelength of the filling medium, mm; epsilon r is the relative dielectric constant of the filling medium; and the transmission waveguide is arranged at the lower part of the PCB, and the microstrip line is communicated with the transmission waveguide. According to the feed structure, by accurately designing the size of the filling medium and the arrangement of the metalized through holes, excitation of a high-order mode in the waveguide is suppressed, transmission instability and energy loss caused by resonance are reduced, and the stability and efficiency of signal transmission are effectively improved.

The invention relates to a multistable mechanical metamaterial structure with a tension characteristic, which belongs to the field of mechanical metamaterials and mainly comprises a multistable mechanical metamaterial cell structure, and the multistable mechanical metamaterial cell structure comprises a tension integral structure component, a degree-of-freedom constraint component and a connecting component. Under the action of a tensioning integral structure, when the structure is not subjected to external load, the structure is subjected to interaction of internal stress, and the balance is achieved in a self-stabilization state; according to the multistable mechanical metamaterial cell element structure with the tension characteristic, the structure of the position where each side of the square outline is located has two steady-state configurations, and the cell element structures are connected through a rectangular array to form the multistable mechanical metamaterial structure with the tension characteristic. The tensegrity structure and the mechanical metamaterial structure are combined, the types of existing mechanical metamaterial cell element structures are enriched, and a brand new direction is opened up for design, analysis and application of the tensegrity mechanical metamaterial structure.

The invention belongs to the technical field of civil engineering, and discloses a rigid-flexible combined pile for a thick collapsible loess stratum, which comprises a flexible short pile, a semi-rigid medium-long pile, a rigid long pile, an alkali-activated geopolymer solidified loess cushion layer and a fiber grid, the semi-rigid medium-long piles are used for reinforcing a medium-thickness loess foundation, and the rigid long piles are used for reinforcing a deep-thickness loess foundation; the flexible short piles and the semi-rigid medium-long piles are arranged in a rectangular array mode, each semi-rigid medium-long pile is located at the centroid of the four adjacent flexible short piles, the rigid long piles are arranged in a plum blossom-shaped array mode, each rigid long pile is located at the centroid of the four adjacent semi-rigid medium-long piles, and the alkali-activated geopolymer solidified loess cushion layer and the fiber grating are arranged on the pile top. Compared with a traditional method, the rigid-flexible combined pile and the construction method thereof have the advantages that cost is saved, and the problem of reinforcement of deep and thick collapsible loess composite foundations under the condition of small loads of high-speed railways, highways, buildings, municipal roads and the like is solved.

The invention discloses powder tap density testing equipment, and relates to the field of performance detection. The transferring mechanism comprises a rotating frame which is arranged on the workbench and rotates around the axis of the rotating frame, a supporting frame which moves in the length direction and the vertical direction of the rotating frame is arranged below the rotating frame, a detachable mounting frame is arranged in the supporting frame, a plurality of supporting blocks are arranged in the mounting frame in a rectangular array mode, and first through holes are formed in the supporting blocks. A feeding pipe and a material carrying pipe are arranged at the two ends of the first through hole correspondingly, and the upper end of the material carrying pipe is located in the first through hole; the vibrating mechanism comprises a vibrating frame which is mounted on the workbench, is arranged in a self-vibrating manner and is used for placing the mounting frame; and the weighing mechanism comprises a bearing frame arranged on one side of the vibration mechanism, a plurality of bearing parts are arranged on the bearing frame in a rectangular array mode and used for containing the material carrying pipes, and weight detection modules are arranged at the bottoms of the bearing parts and used for weighing the material carrying pipes. The device can automatically transfer the material loading pipe, reduces the possibility of powder attachment, and improves the detection efficiency while ensuring the precision.

The invention relates to a self-cleaning module type gravity type net cage culture system which comprises a floating mat assembly, a floating mat assembly and a gravity type net cage culture system. The cage frame assembly comprises frames and floaters, each frame is arranged on two adjacent floating mat units, the two ends of each frame are connected with the two ends of the two adjacent floating mat units respectively, and the floaters are fixedly arranged below the frames; the plurality of oyster cages are hung on the frame and are used for culturing fresh oysters; the cleaning assembly comprises a mounting frame and cleaning mechanisms, the mounting frame is connected with the floating mat assembly, the mounting frame can swing relative to the floating mat assembly, the multiple cleaning mechanisms are arranged along the mounting frame at intervals, and each cleaning mechanism can make contact with at least two adjacent oyster cages; and / or each oyster cage is in contact with at least one cleaning mechanism. Compared with the prior art, the cleaning assembly cleans the oyster cage under the action of water flow and stormy waves, so that the time interval for cleaning the oyster cage on water is prolonged to 3-6 months.

The utility model relates to the technical field of cell culture, and discloses a chamber structure adaptive to Faraday wave assembly, which comprises a pore plate, N mounting grooves are formed in the top surface of the pore plate, and N is greater than or equal to 1; the N container bodies are arranged on the pore plate in a rectangular array mode or a central symmetry mode and correspondingly arranged in the N mounting grooves, a plurality of culture grooves used for cell assembly are sequentially formed in the container bodies in the longitudinal direction from the top face to the bottom face, and the widths of the culture grooves are gradually decreased. According to the device, internal cells or cell microspheres can be gathered into a sound potential well of a standing wave sound field under the action of acoustic pressure, gravity and buoyancy under the action of the sound field and are tightly arranged according to an expected pattern, and a culture solution is longitudinally stacked in a plurality of culture tanks of which the widths are gradually reduced; longitudinal shape limitation on the tissue structure is realized, and complex three-dimensional longitudinal arrangement is constructed through mutual combination of the two. Therefore, the requirement of constructing any multi-scale and complex cell structure is met. And forming a multi-layer structure.

The invention relates to the technical field of barreled water stacking, and discloses barreled water uniform stacking equipment capable of adjusting the angle of a stacking frame, the barreled water uniform stacking equipment comprises a placing part, the placing part comprises a stand column frame, the outer surface of the stand column frame is slidably connected with a layer plate, and an empty groove is formed in the layer plate; the multiple empty grooves are distributed in the shelf board in a rectangular array mode, and the surfaces of the inner walls of the empty grooves are rotationally connected with rotating plates through rotating shafts in a damping mode, wherein the rotating plates can be used for containing external barreled water. The barreled water uniform stacking equipment capable of adjusting the angle of the stacking frame can effectively solve the problems that in the prior art, multiple layers of barreled water are separated through multiple scattered thin plates, during climbing or downhill, due to inclination of the stacking frame, the barreled water is subjected to the downward component force effect along the slope, the stacking frame is prone to losing balance, the whole stacking frame topples over, and the stacking frame is prone to falling off. The barreled water is damaged, and even safety accidents are caused.

The utility model provides a modularized combined net cage framework and a marine ecological aquaculture net cage system. The modularized combined net cage framework comprises a plurality of single box modules and a plurality of side box modules which are assembled into a whole, the single-box modules are distributed in a rectangular array mode to form a framework body and are used for being connected with nettings to define independent breeding spaces. Each side box module is connected to each side edge of the framework main body and is used for mounting a floater assembly; wherein the adjacent single-box modules, the adjacent side-box modules, and the side-box modules and the adjacent single-box modules are detachably connected through quick-plug structures. According to the modularized combined net cage framework and the marine ecological breeding net cage system, assembling and disassembling are convenient, labor is saved, any one or more single cage modules can be disassembled underwater to clean and maintain the netting, and the modularized combined net cage framework and the marine ecological breeding net cage system are particularly suitable for being applied and popularized in small-size marine ranches and fishermen.

The invention discloses a mold frame opening and closing system for a plastic mold, relates to the field of mold opening and closing, and solves the problem that an existing mold frame is difficult to quickly demold a mold base, the mold frame opening and closing system comprises a fixed plate and mounting plates fixedly mounted at the two ends of the fixed plate, and two symmetrically distributed mounting frames are arranged on the outer side of the fixed plate; pressing templates are fixedly mounted on the inner side of the mounting frame, and four hydraulic rods distributed in a rectangular array are fixedly mounted between the opposite surfaces of the two pressing templates and the two fixing plates respectively; the demolding mechanism is used for performing gas injection demolding on the two mold pressing plates, and the demolding mechanism is mounted between the two mounting frames; according to the demolding mechanism, when the two mounting frames are far away from each other, high-pressure gas can be injected between the two mold pressing plates, the gap between the mold pressing plates and the mold base is increased, the problem that the mold base adheres to the mold pressing plates is solved, and therefore the effect of rapid demolding is achieved.

The utility model belongs to the technical field of casting mold manufacturing, and discloses a transfer mechanism, a riser feeding system and a casting production line. The transfer mechanism comprises a transfer device, the transfer device comprises a plurality of clamping assemblies arranged in a rectangular array, the distance between every two adjacent clamping assemblies can be adjusted, each clamping assembly comprises a plurality of clamping jaws with different lengths, and the clamping jaws with different lengths can clamp riser materials with different sizes respectively. The transfer mechanism can be suitable for riser materials of various sizes, the flexibility is improved, the application range is expanded, transfer of multiple riser materials at a time can be achieved, and the riser material transfer efficiency is effectively improved.

The invention discloses a server and a server cabinet, and relates to the technical field of servers, and the server comprises a server shell which comprises a containing cavity and an opening part; the hard disk supporting module comprises a plurality of mounting cavities which are arranged at intervals, the plurality of mounting cavities are arranged in a rectangular array so as to load the plurality of hard disk assemblies in a one-to-one correspondence manner, each hard disk assembly comprises a plurality of hard disks which are sequentially arranged along the second direction, and the hard disk supporting module is inserted into the accommodating cavity in a sliding manner along the first direction through the opening part; the first guide rail assembly extends in the first direction and comprises a plurality of first guide parts which are sequentially arranged in a sleeving mode, every two adjacent first guide parts can relatively slide in the first direction, and the first first guide part and the last first guide part are connected with the hard disk supporting module and the server shell correspondingly; the problem that high-density storage of 120 hard disks in a 4U-height box body is difficult to realize by a server in the related technology is solved, and the technical effect of high-density hard disk storage is achieved.

The utility model relates to the technical field of sensor packaging, in particular to a batch packaging structure and a batch packaging process for sensors, the batch packaging structure comprises a substrate and a packaging cover, the windowing position of the substrate is provided with a mounting area, the mounting area is divided into a plurality of packaging stations arranged in a rectangular array, and the packaging stations are arranged on the substrate. First positioning holes are formed in two opposite sides of the mounting area of the substrate; the surface, provided with the mounting area, of the substrate is connected with a packaging layer, the packaging layer comprises a plurality of packaging tube shells, and the packaging tube shells are in one-to-one correspondence with the packaging stations; the packaging cover comprises a cover plate area, the cover plate area is provided with a plurality of window covers arranged in a rectangular array, the window covers correspond to the packaging stations one to one, windows are formed in the window covers, waterproof films are attached to the windows, second positioning holes are formed in the positions, on the two opposite sides of the installation area, of the packaging cover, and the second positioning holes are opposite to the first positioning holes in position. According to the invention, the sensors can be packaged in batches, the production efficiency is improved, and the packaging cost is reduced.

The conveyor with the automatic sorting function comprises a base, supporting rods are fixedly installed on one side of the top of the base in a rectangular array mode, a supporting plate is fixed to the tops of the four supporting rods, four guide rods movably penetrate through the supporting plate in the vertical direction, and an installation frame is installed on the four guide rods. Limiting plates are fixed to the bottoms of the guide rods, and springs arranged outside the guide rods in a sleeving mode are installed between the opposite sides of the supporting plate and the installation frame. By arranging the sliding rail, the mounting block, the driving mechanism and the pushing mechanism, when the automatic sorting conveyor is used, the mounting block can slide on the sliding rail through the driving mechanism, so that the pushing mechanism is driven to move, the pushing mechanism corresponds to any one discharging hopper, and a conveyor which is provided with a plurality of groups of pushing mechanisms simultaneously and has an automatic sorting function is replaced; and during subsequent equipment maintenance, the equipment maintenance difficulty is reduced, the equipment maintenance cost is reduced, and the practicability is improved.

The utility model discloses a 96-well plate capable of preventing cross contamination, which belongs to the field of 96-well plates and comprises a well plate and a well plate cover covering the well plate, ninety-six hole grooves distributed in a rectangular array are arranged on the inner side of the well plate, and the well plate cover covers the well plate. The hole plate cover comprises a transparent cover plate, a cover cap which is clamped on the transparent cover plate and is in contact with an opening in the top end of the hole groove, and a fence which sleeves the outer part of the hole plate and is clamped with the bottom of the transparent cover plate. According to the 96-well plate capable of preventing cross contamination, cross contamination of reagents is effectively prevented through the design of the well plate cover and the cap on the well plate cover, the hole grooves distributed in the well plate in a rectangular array mode are matched with the well plate cover capable of being connected in a covering mode, the internal situation can be observed through the transparent cover plate, and leakage of the reagents in each hole groove is avoided through the sealing design of the cap; the enclosure and the buckle structure ensure the firm fixation of the pore plate cover, and further enhance the closeness of the system.

The invention discloses a production line and a production method for processing square blocks into ferrite magnetic discs, comprising a square mold: a press: a bell furnace: a first magnetic material wire cutting machine: a rounding machine: a centerless external circular grinding machine: the centerless external circular grinding machine is placed at the tail of the first magnetic material wire cutting machine, and is used for fine processing of cylindrical blanks, so that the cylindrical blanks are processed into cylindrical parts; a bonding platform: the bonding platform is placed at the tail of the centerless external circular grinding machine, and a plurality of cylindrical parts are placed in a rectangular array in the bonding platform, and the bonding platform is used for bonding the cylindrical parts arranged in the rectangular array into one; a second magnetic material wire cutting machine: the second magnetic material wire cutting machine is placed at the tail of the bonding platform, and is used for cutting the cylindrical parts bonded into one into a plurality of circular discs bonded into one; an immersion separation tank; the present invention uses a set of molds and a tonnage press to realize the processing of magnetic discs of different thicknesses, and has high production efficiency and low cost.

The invention discloses a storage battery electrode plate strength test system, and relates to the field of electrode plate strength test.The storage battery electrode plate strength test system comprises a multi-angle tool device and an array type impact test device.The multi-angle tool device comprises a base, a first tool platform, a second tool platform and a tool side plate, the first tool platform is rotationally installed on the base, and the second tool platform is rotationally installed on the tool side plate; the second tool platform is rotationally installed on the first tool platform, the rotation axis of the first tool platform is perpendicular to the rotation axis of the second tool platform on the horizontal plane, the array type impact testing device comprises an impact bottom plate, a lifting driving plate and impact rods, the impact rods are arranged on the impact bottom plate in a sliding and penetrating mode, and the impact rods are arranged in a rectangular array mode. The lifting driving plate is arranged above the impact bottom plate, a plurality of driving columns are arranged on the lifting driving plate in a rectangular array mode, each driving column is provided with an impact rod, the driving columns are detachably connected with the impact rods, simulation is conducted by accurately adjusting the tool angle, and it is ensured that a test scene is highly matched with the actual working condition.

The utility model discloses a mineral powder sampling device, which comprises a sampling box: sixteen sample storage rooms are provided on the top of the sampling box, and the sample storage rooms are arranged on the top of the sampling box in a rectangular array manner; a partition slot is provided on the right side of the sampling box; the inner cavity of the partition slot is slidably connected with a sample partition, and the top of the sample partition is attached to the bottom of the inner cavity of the sample storage room. The utility model loads the mineral powder sample into the inner cavity of the sample storage room, and the sample partition blocks the sample to prevent it from falling, until the sixteen sample storage rooms are filled and compacted, and then operates the scraping component to scrape off the excess mineral powder on the top of the sampling box, and then the sample partition is pulled out from the inner cavity of the partition slot, and the mineral powder sample in the sample storage room will fall into the sampling grid in the sample collection box due to its own gravity, and the sample sampling is completed, so that the purpose of taking sixteen equal parts of the sample at one time can be achieved, and the operation is simple and the labor intensity is reduced.

A thermometer includes a substrate, a cover layer, and a plurality of voids between the substrate and the cover layer. Each void contains at least one liquid crystal temperature sensing composition. The plurality of voids is arranged in at least one array (e.g., two rectangular arrays). The cover layer is located between the substrate and a biaxially-oriented polyester film. The thermometer may include at least two support layers on a side of the substrate opposite the cover layer and a biaxially-oriented polypropylene film / tape above a portion of the biaxially-oriented polyester film.

The utility model discloses an automatic circle smashing device for egg tart making, which comprises a plurality of groups of circle smashing single bodies, the plurality of groups of circle smashing single bodies are arranged in a positioning frame in a rectangular array, each row of circle smashing single bodies is driven by a group of servo motors to periodically and vertically lift, and then a rack drives a gear disc to periodically rotate. The positioning frame is placed on a main frame of a conveying assembly of the material disc and is driven by two sets of lifting assemblies to ascend and descend, and the first lifting assembly independently and periodically lifts the positioning frame and is used for avoiding the material disc; the first lifting assembly and the second lifting assembly synchronously act to lift the positioning frame to the maximum stroke, and space is provided for cleaning the interior of the positioning frame. The automatic circle smashing device can simulate the technical action of manual circle smashing to the maximum extent, egg tarts with the taste the same as that of the egg tarts manufactured manually are produced, full-automatic batch production is achieved, the defects that manual manufacturing efficiency is low, and product quality is different and unified are overcome, and the market competitiveness of products is greatly improved.

The invention discloses a metasurface unit based on electromagnetic physical dimension joint encryption, a metasurface and a holographic encryption method, and relates to the technical field of metasurface encryption. The invention aims to solve the problem that the existing secret sharing encryption strategy limits the information capacity and endangers the security of secret information. The metasurface unit comprises a substrate, a split ring resonator and an open slot resonator, wherein the split ring resonator and the open slot resonator are located on the substrate. A plurality of metasurface units which are closely arranged in a rectangular array form a metasurface. Encrypting the to-be-encrypted image by using a chaos algorithm to generate a chaos sequence; performing XOR operation on a to-be-encrypted image and the chaos sequence to generate a ciphertext image; an incident polarization key, a system security key and a ciphertext image are simultaneously coded to different physical dimensions of a metasurface through amplitudes and phases, so that the password image and the key are embedded into four amplitude and phase channels of electromagnetic waves at different spatial positions at two different working frequencies when different polarization incidence is carried out, and encryption is completed.

A powder tap density testing device relates to the field of performance testing and includes: a workbench; a transfer mechanism, including a rotating frame mounted on the workbench and rotating about its own axis, a support frame movable along its length and vertical direction, a detachable mounting frame within the support frame, a plurality of support blocks arranged in a rectangular array within the mounting frame, a first through-hole provided at each end of the first through-hole, a feed tube and a loading tube respectively provided, and the upper end of the loading tube located within the first through-hole; a vibration mechanism, including a vibration frame mounted on the workbench and configured to vibrate itself, for placing the mounting frame; and a weighing mechanism, including a supporting frame mounted on one side of the vibration mechanism, a plurality of supporting portions arranged in a rectangular array on the supporting frame for placing the loading tube, and a weight detection module provided at the bottom of the supporting portion for weighing the loading tube. This device can automatically transfer the loading tube and reduce the possibility of powder adhesion, thereby ensuring accuracy while improving detection efficiency.

The utility model discloses an axle box wearing plate welding and positioning tool, and relates to the technical field of the machine manufacturing industry. The axle box wearing plate welding positioning tool comprises a first connecting block, the bottom end of the first connecting block is fixedly connected with four universal wheels distributed in a rectangular array mode, the top end of the first connecting block is fixedly connected with a lifting device, and the lifting device comprises a first motor. The bottom end of the first motor is fixedly connected with the top end of a first connecting block, the output end of the first motor is fixedly connected with a first bevel gear, the outer surface of the first bevel gear is connected with a second bevel gear in a meshed mode, and one end of the second connecting block is provided with a penetrating type lifting groove. A threaded rod is rotationally connected to the lower inner wall of the lifting groove, a lifting rod is connected to the outer surface of the threaded rod in a threaded and sleeved mode, the lifting device is arranged, so that preparation work before welding can be completed by one person, and a large amount of manpower is saved.