421results about How to "Easy to assemble and use" patented technology

The invention discloses an automatic switching-on device of a circuit breaker. The automatic switching-on device comprises a shell as well as a transmission mechanism and an electronic control mechanism arranged in the shell, wherein transmission mechanism comprises a positive and negative rotation motor, a transmission central shaft, a transmission gear and a driving gear which is used for driving the circuit breaker and is linked with a handle, a first transmission piece is arranged on the transmission central shaft in a free rotation manner, a second transmission piece fixedly linked with the transmission central shaft is arranged on the transmission central shaft and below the first transmission piece, a linkage check block is arranged on one side of the second transmission piece, relative to the anticlockwise rotation direction of the first transmission piece to form the matching structure that the first transmission piece and the second transmission piece are linked in the anticlockwise direction and are independent in the clockwise direction; and the electronic control mechanism controls the positive rotation, the negative rotation and stopping of the positive and negative rotation motor, realizes the rotation switching on of the driving gear, and then is separated from the positive and negative rotation motor. The automatic switching-on device has the advantages that the automatic switching on is realized, the normal separating of the circuit breaker can not be affected, the safety is good and the like.

The present invention relates to a flexible stress sensor. The flexible stress sensor comprises two sensing assemblies; each sensing assembly includes a flexible fiber wire and a nanostructured film coating the flexible fiber wire; the flexible fiber wire is made of a conductive material or the surface of the flexible fiber wire is provided with a conductive layer; the nanostructured film is made of a conductive material or a semiconductor material; the two sensing assemblies are cross-stacked; and the nanostructured films of the two sensing assemblies contact with each other at the intersection of the two sensing assemblies. The present invention also relates to a preparation method of the flexible stress sensor. The flexible stress sensor of the invention has the advantages of small size, high resolution, high sensitivity and simple preparation, is suitable for being applied to miniaturized and integrated equipment and can be used for making wearable equipment for detecting human health.

A plug connector (100) includes an insulative housing (1) including a base portion (10) and a mating portion (12) extending from the base portion in a first mating direction, a number of contacts (2) received in the insulative housing, a circuit board (6) with a plurality of through holes (620) therein, and a number of wires (3) comprising a number of signal wires (31) and a number of power wires (32) respectively electrically connecting with the contacts. The contacts comprise a number of signal contacts (23) and a number of power contacts (21), the signal contacts are soldered with the circuit board. The signal wires are flatly soldered on the circuit board, the power wires are soldered with the contacts directly or electrically connected with the contacts by the circuit board. The signal wires are arranged to extend laterally along a second direction perpendicular to a first mating direction, the power wires are arranged to extend along a third direction perpendicular to the second direction.

The invention relates to an electrocardiograph monitoring system based on Internet of Things. The electrocardiograph monitoring system comprises an electrocardiograph collecting module, a main intelligent mobile terminal and an electrocardiograph monitoring module, wherein the electrocardiograph collecting module is connected with the main intelligent mobile terminal, the bidirectional communication is realized between the main intelligent mobile terminal and the electrocardiograph monitoring module, the electrocardiograph collecting module comprises a signal collecting end, a data processing module and a signal transmitting module which are sequentially connected, the data processing module is used for processing the collected electrocardiograph signal and sending to the main intelligent mobile terminal through the signal transmitting module, the main intelligent mobile terminal is used for sending the electrocardiograph signal to the electrocardiograph monitoring module, the electrocardiograph monitoring module comprises a remote communication module, a diagnosis and analysis module and an electrocardiograph signal database, the remote communication module is used for communicating with the main intelligent mobile terminal, and sending the received electrocardiograph signal to the electrocardiograph database to be stored, and the diagnosis and analysis module is used for extracting the received signal of the electrocardiograph database, diagnosing and analyzing the signal, and sending the results to the main intelligent mobile terminal through the remote communication module after diagnosis and analysis.

The invention discloses a workpiece assembling mechanism, and belongs to the field of assembly machining mechanical equipment. A screw feeding mechanism is horizontally arranged on one side below a fixed support, a driving guide plate is horizontally arranged on the lower side of an assembling air cylinder, an assembling guide rod is vertically and slidably provided with an assembling support anda pressing support from top to bottom, the lifting guide rod is provided with an assembling sleeve and a pressing sleeve in a sliding mode from top to bottom in the vertical direction, a pressing through hole is vertically formed in one side of the pressing support, an anti-skid rubber layer and a material attracting magnet are horizontally arranged on a fixed support in the middle of the lower side of a lower assembly tool from top to bottom in sequence, limiting clamping plates are symmetrically arranged on the fixed support on the outer side of the lower assembly tool; and the screw feedingmechanism comprises a feeding support, a feeding air cylinder, a nail pushing air cylinder and a screw clamping plate. The mechanism is reasonable in structural design, so that the workpiece can be stably held and fixed efficiently, and the workpiece can be assembled accurately, the automatic feeding of screws can be realized, the automation degree is high, and the requirements of assembly and use are met.

A plug connector (100) includes an insulative housing (1) including a base portion (10) and a mating portion (12) extending from the base portion in a first mating direction, a number of contacts (2) received in the insulative housing, a circuit board (6) with a plurality of through holes (620) therein, and a number of wires (3) comprising a number of signal wires (31) and a number of power wires (32) respectively electrically connecting with the contacts. The contacts comprise a number of signal contacts (23) and a number of power contacts (21), the signal contacts are soldered with the circuit board. The signal wires are flatly soldered on the circuit board, the power wires are soldered with the contacts directly or electrically connected with the contacts by the circuit board. The signal wires are arranged to extend laterally along a second direction perpendicular to a first mating direction, the power wires are arranged to extend along a third direction perpendicular to the second direction.

The invention relates to the technical field of screen glue dispensing, in particular to tablet computer screen glue dispensing pasting equipment. The tablet computer screen glue dispensing pasting equipment comprises a machine frame, a feeding slide table, a discharging slide table, a glue dispensing mechanism and a mechanical hand, wherein the feeding slide table and the discharging slide tableare respectively arranged at two sides of the machine frame; the glue dispensing mechanism is arranged on the machine frame and is used for performing glue dispensing on a screen; the mechanical handis arranged at one side, positioned at the glue dispensing mechanism, of the machine frame and is transmitted on the feeding slide table, the discharging slide table and the glue dispensing mechanism;each of the feeding slide table, the discharging slide table and the glue dispensing mechanism is provided with a tool for fixing the screen; a pressing mechanism used for pressing the screen is arranged at one side of the discharging slide table. The whole work efficiency is high; the stability and the reliability are high; the automation degree is high; the labor and the materials are saved.

The invention discloses a liquid flow frame device of an all vanadium redox flow battery, which is characterized in that centrosymmetric liquid flow passages which have kinks and are derious for several times are arranged on the liquid flow frame; the sections of the liquid flow passages have shapes close to Z or the shape formed by connecting a plurality of Zs. In the device, the derious liquid flow passages have a plurality of kinks, thereby lengthening internal flow passages, increasing effective resistance of self-discharge in a battery, slowing self-discharge and avoiding local overtension in the battery, moreover, during standing of the battery, the electrolyte in the derious liquid flow passages is inevitably faced with breaks at the kinks of the liquid flow passages, so that the electrolyte in the single battery is isolated from the electrolyte in other single batteries and liquid storage devices, thereby avoiding the battery from self-discharge when being communicated by the electrolyte; after charging, plenty of electric energy is stored in electric piles, thus improving the energy transfer efficiency of the vanadium battery and prolonging the service life of the vanadium battery.

The invention relates to a vibration sensing device and electronic equipment. The vibration sensing device comprises a substrate and a shell, a packaging structure with a containing cavity is definedby the substrate and the shell, and an MEMS chip is contained in the containing cavity. The vibration sensing device further comprises a protective shell, the protective shell is contained in the containing cavity and fixedly arranged on the substrate, a cavity is defined by the protective shell and the substrate, the MEMS chip is fixedly arranged on the protective shell, a through hole is formedin the protective shell, and a back cavity of the MEMS chip is communicated with the cavity through the through hole. And the device further comprises a vibration element, and the vibration element islocated in the cavity and is configured to respond to external vibration. The vibration sensing device has the advantages that the size of the whole vibration sensing device in the height direction can be reduced, and assembly is more facilitated.

The invention provides a telescopic type handle structure for a safe, which comprises a handle. The handle structure is characterized in that a middle shaft of the handle passes through a mounting hole of a door plate of the safe, and supports an upper spring between the handle and the door plate, the middle part of the middle shaft on the handle is provided with a clamping opening which is in clamping fit with a movable clamping plate, the clamping plate is hanged behind the door plate through the matching structure of a guide hole and a pin, a power-driven part is directly or indirectly in matching connection with the clamping plate, and the rear part of the middle shaft on the handle is provided with an upper limit part. The handle structure has reasonable and practical structure, and can conveniently combine a mechanical lock or an electric lock; moreover, the application range of the handle structure is wider, and the assembly and the use of the handle structure are also quite convenient.

The invention discloses an assembled permanent formwork overlapped FRP rib seawater sea sand recycled concrete beam and a manufacturing method thereof. The assembled permanent formwork overlapped FRPrib seawater sea sand recycled concrete beam comprises a prefabricated assembled permanent formwork and an FRP rib seawater sea sand recycled concrete beam. The prefabricated assembled permanent formwork is formed by assembling corer strip assembly blocks, first panels, second panels and positioning connecting parts, and the formwork is manufactured from an engineering cement-based composite (ECC)and a fiber woven mesh. The FRP rib seawater sea sand recycled concrete beam comprises seawater sea sand recycled concrete poured into the prefabricated assembled permanent formwork and an FRP rib framework fixedly arranged in the seawater sea sand recycled concrete. As the TRE formwork and the FRP rib seawater sea sand recycled concrete are compounded, the engineering manufacturing cost of the formwork is effectively reduced, the ductility of the FRP rib seawater sea sand recycled concrete beam is improved, the long-time durability of FRP ribs is guaranteed, and meanwhile the problems that an existing integral formwork is large in occupied space and not easy to transport are solved.

The invention discloses a post-peak fractured rock triaxial slurry permeability test system and method. The system comprises a permeation system, an axial loading system, a circumferential loading system, a grouting pressure system and a data acquisition and analysis system. The method comprises the following steps: 1, debugging the test system and checking the running condition of the test system; 2, mounting a rock sample; 3, starting and setting the axial loading system; 4, starting and setting the circumferential loading system; 5, fracturing the rock sample to a post-peak fractured state;6, carrying out a grouting permeability test on the rock sample in the post-peak fractured state; 7, ending the test; 8, processing the test data. The permeability change characteristics of the slurry in the rock post-peak fracture process can be effectively determined; and the problems of unsmooth permeation of slurry in the fractured rock sample, easy blockage of the pipeline, non-uniform pressure action of the slurry, difficulty in confining pressure control, difficulty in sealing implementation and the like in triaxial slurry permeability test of different post-peak fractured state rockscan be greatly solved.

The invention provides a photovoltaic support with an adjustable photovoltaic panel angle, and belongs to the technical field of new energy. The photovoltaic support comprises a detection and controlmodule, a support body, a first photovoltaic panel placement rack, a second photovoltaic panel placement rack and two automatic angle adjustment devices, wherein the first photovoltaic panel placementrack and the second photovoltaic panel placement rack are respectively arranged at two ends of the support body, the first photovoltaic panel placement rack and the photovoltaic panel placement rackare same in structure, and the first photovoltaic panel placement rack and the second photovoltaic panel placement rack both incline. The support is reasonable in structure and can be rapidly disassembled and installed, oblique angles of the first photovoltaic panel placement rack and the second photovoltaic panel placement rack can be flexibly adjusted according to solar ray and season, the problems of slow construction speed, assembly complexity, fixed photovoltaic panel oblique angle and the like of an existing solar photovoltaic panel support during the installation process are solved, andthe photovoltaic support also can be widely applied to photovoltaic agriculture and photovoltaic industry except a conventional distributed roof photovoltaic power generation system and can be used for promotion and application.

The invention discloses a magnetoelectric velocity transducer with a self-checking function. The magnetoelectric velocity transducer comprises an inner core component arranged inside an outer shell, the inner core component comprises a connecting support, an induction element, coils, a permanent magnet and a circuit board, the induction element is fixed to the front portion of the connecting support, the coils are fixed to the periphery of the middle segment of the connecting support, the permanent magnet is arranged in an inner cavity of the connecting support, the circuit board is fixed to the rear portion of the connecting support, a signal processing circuit and a power source circuit are integrated in the circuit board, the induction element and the coils are respectively and electrically connected with the circuit board, and after the induction element inducts magnetic field changes generated after the coils are powered on, processing is carried out by the circuits integrated in the circuit board to output square signals. Whether the function of the transducer and a detection signal link are normal or not can be detected by the transducer without dismounting the transducer, the operation is easy and convenient, and the structure is compact.

A vehicle running board includes a treadle body provided with a receiving surface with plural recesses and having its underside disposed with a recessed chamber. A decorative plate is mounted on the receiving surface of the treadle body, and an anti-skid pad is set on the decorative plate. A connecting base is received in the recessed chamber of the treadle body and has two lower sides respectively bent inward to form a sliding rail. A plurality of inverted-U shaped positioning members are positioned at the underside of the connecting base, respectively having two sides received in the sliding rails of the connecting base and respectively bored with a long insert hole having a third screw inserted therein. Thus, the positioning members in the connecting base can be adjusted in setting position for matching vehicles of different styles, convenient in assembly and use and stable in whole structure.

The invention provides a clamping device of a machine tool and belongs to the technical field of machines. The clamping device of the machine tool solves the problem of automatic clamping or loosening of workpieces. The clamping device comprises a mounting base and a rotating headstock, a rotating drum coaxial with the rotating headstock is arranged at the end of the rotating headstock, two or three sheet-shaped clamping sheets are hinted to the rotating drum, through grooves corresponding to the clamping sheets in a one-to-one mode are formed in the periphery of the wall of the rotating drum, the clamping sheets are arranged in the through grooves in a penetrating mode and can swing in the through grooves, open slots are formed in the outer ends, stretching out of the rotating drum, of the clamping sheets, fixing shafts are arranged in the open slots in a penetrating mode, the fixing shafts are fixed to the rotating headstock, the clamping sheets can swing relative to the fixing shafts to enable the inner ends of the clamping sheets to get close to one another or be away from one another, a clamping reset piece enabling the inner ends of the clamping sheets to be in a closed state is arranged between the rotating headstock and the rotating drum, a stirring piece which protrudes out of the periphery of the rotating drum is fixed to the rotating drum, the stirring piece can be driven to rotate through a driving piece to enable the inner ends of the clamping sheets to be away from one another, and therefore automatic clamping or loosening of the workpieces is achieved.

The invention discloses a modular water household electrical appliance and a multiple combined water household electrical appliance. The modular water household electrical appliance is provided with a standard connecting interface, the standard connecting interface can be used for connection with other devices with the standard connecting interfaces, the modular water household electrical appliances can be combined for use and can also be individually used, therefore, users can purchase needed modular water household electrical appliances according to needs and assemble the modular water household electrical appliances or apply the modular water household electrical appliances individually. The standard connecting interface of the appliance can enable multiple devices to be directly connected, conventionally, each water household electrical appliance needs a power line, however, one group of (multiple) the modular water household electrical appliances may only need one power line, the modular water household electrical appliance is subjected to modular processing, and therefore, the application and the assembling are simple and convenient. Besides, the modular water household electrical appliance can be arranged to form an integral framework through a combined mode, such that occupied space can also be reduced, and convenience is brought to the life of the users.

The invention discloses a testing apparatus and method for testing tensile strength of fissured rock. The apparatus comprises a fissured platform Brazilian specimen processing device, a stress loadingsystem, an acoustic emission system and a VIC-3D non-contact full-field strain measurement system. The fissured platform Brazilian specimen processing device comprises a base, a specimen mold, a chute, a slide block and a fissure shaping piece; the stress loading system comprises an electronic universal testing machine and a first computer; the acoustic emission system comprises a second computer, a data acquisition case, a pre-amplifier and an acoustic emission sensor; and the VIC-3D non-contact full-field strain measurement system comprises a VIC-3D measuring instrument and a third computer. The method comprises the following steps: 1, preparing a fissured platform Brazilian specimen; 2, building a testing apparatus; and 3, performing axial compression test. The measured data can reallyreflect the tensile strength of the fissured rock, a fissure spreading evolution law and a fracture mode as well as influence laws of fissures on the rock.

The invention belongs to the technical field of the power line repairing and maintaining equipment application and in particular discloses a crawling ladder for repairing and maintaining a power line. The crawling ladder is composed of a locating assembly and an insulated climbing assembly. The crawling ladder for repairing and maintaining the power line has the beneficial effects that the crawling ladder has a simple structure, can be assembled and used conveniently, has long service life, and can effectively improve the repairing and maintaining efficiency; when the crawling ladder is used, a pulley on a hook can be clamped into a lead wire, a connecting rod is driven by the dead weight of the device, so that a driving connecting rod and a locating block can move downwards by taking the connecting point of a locating plate and the hook as the center, one end of the locating plate is drive to move upwards, and the buckling (padlocking) purpose can be achieved, the connecting stability of the hook and the wire is ensured and no slipping phenomenon is caused.

A vehicle running board includes a treadle body provided with a receiving surface with plural recesses and having its underside disposed with a recessed chamber. A decorative plate is mounted on the receiving surface of the treadle body, and an anti-skid pad is set on the decorative plate. A connecting base is received in the recessed chamber of the treadle body and has two lower sides respectively bent inward to form a sliding rail. A plurality of inverted-U shaped positioning members are positioned at the underside of the connecting base, respectively having two sides received in the sliding rails of the connecting base and respectively bored with a long insert hole having a third screw inserted therein. Thus, the positioning members in the connecting base can be adjusted in setting position for matching vehicles of different styles, convenient in assembly and use and stable in whole structure.

The invention discloses a novel belt rice seedling conveying mechanism of a rice transplanter, relating to the agricultural machinery equipment. The rice seedling conveying mechanism comprises a rice seedling carrying platform, a rice seedling conveying belt, a rice seedling conveying wheel axel, a driving rice seedling conveying wheel axel, a driven rice seedling conveying wheel axel, a synchronous transmission connecting rod, a roller column clutch assembly and a tensioning spring, wherein an upper row and a lower row of vacancy holes are formed at the lower part of the rice seedling carrying platform; the driving rice seedling conveying wheel axel is positioned on the rice seedling carrying platform through a bracket and transversely penetrates through the rear side of the lower row of vacancy holes; the driven rice seedling conveying wheel axel is positioned on the rice seedling carrying platform through another bracket and transversely penetrates through the rear side of the upper row of vacancy holes; the rice seedling conveying wheel axel is arranged between the driving rice seedling conveying wheel axel and the driven rice seedling conveying wheel axel; the synchronous transmission connecting rod is connected between the rice seedling conveying wheel axel and the driving rice seedling conveying wheel axel; chain wheels are sleeved at the part where the driving rice seedling conveying wheel axel and the driven rice seedling conveying wheel axel correspond to the vacancy holes; the rice seedling conveying belt is installed out of the chain wheels of the upper and lower vacancy holes at corresponding parts; the roller column clutch assembly is installed at one end of the driving rice seedling conveying wheel axle; one end of the tensioning spring is hooked on the driven rice seedling conveying wheel axel; and the other end of the tensioning spring is hooked on the bracket at the upper side of the upper vacancy holes.

The invention discloses a lithium ion battery module, comprising a battery clamp on which a plurality of battery inserting holes are arranged, wherein the battery inserting holes are distributed according to a matrix; a plurality of battery series connection pieces embedded into the battery inserting holes; and a plurality of unit batteries which are inserted into the battery inserting holes and are connected with the battery series connection pieces. The battery clamp is composed of an insulation holder located at a lower layer and a conductive holder located at an upper layer. The insulation holder and the conductive holder are arranged closely and are fixedly connected. A plurality of insulation holder holes distributed according to the matrix are produced on the insulation holder. A plurality of conductive holder holes distributed according to the matrix are produced on the conductive holder. The insulation holder holes and the conductive holder holes form the battery inserting holes. The battery series connection pieces are in elastic contact connection with the hole walls of the conductive holder holes. The battery module is compact and stable in structure, convenient for assembly and good in heat dissipation, and a traditional parallel connection mesh structure is removed.

The invention relates to an integrated hydraulic cylinder with extension and swing functions and application thereof. The integrated hydraulic cylinder comprises a cylinder bottom, a cylinder barrel, a cylinder cover, a piston and a piston rod; the piston is arranged in the cylinder barrel, and includes a cavity; a left end cover and a right end cover are arranged on two sides of the piston; one end of the piston rod is positioned in the cavity after penetrating through the right end cover; separation plates are oppositely arranged on the piston rod and the left end cover; the piston rod is provided with an axial hole communicated to the cavity; and when oil is supplied to the axial hole, oil pressure is formed between the separation plates, and the separation plate on the piston rod is pushed to drive the piston rod to rotate. The extension and swing functions are realized through the structure of the integrated hydraulic cylinder, so that the defect of realization of swing and extension functions through oil supply by two oil cylinders in a traditional hydraulic cylinder is saved, the integration is higher, the structural space of the hydraulic cylinder is reduced, and the manufacturing cost is saved; and the extension and swing functions are independent from each other, so that the swing is more accurate, the control precision is improved, and several working environments with higher use requirements can be satisfied.

The invention provides an automatic measuring system and method for a layered water pumping test of a deep hole including multiple water-bearing strata. The system comprises a water-bearing stratum packer used for isolating the multiple water-bearing strata, and a data collecting and processing device used for measuring the hydrogeological parameters of different water-bearing strata. The data collecting and processing device comprises an aboveground data processing and displaying unit and an underground data collecting unit, wherein the aboveground data processing and displaying unit and the underground data collecting unit are arranged in a sealed shell. A communication cable of the underground data collecting unit penetrates through the water-bearing stratum packer to stretch into the water-bearing strata underground and is used for collecting dynamic information of the water-bearing strata. The aboveground data processing and displaying unit is used for receiving the dynamic information and further processing the dynamic information so as to generate hydrogeological parameter data. By the adoption of the automatic measuring system and method, the multiple water-bearing strata can be isolated from one another, and the hydrogeological parameters of all the water-bearing strata are measured and displayed in real time; moreover, the measuring range is wide, the sampling frequency is adjustable, and the requirements for the modernization layered water pumping test can be met.

The invention discloses a rapid detection method for the shape and position size of a part. The method comprises the steps of obtaining the shape and position size of a standard part according to a two-dimensional drawing, controlling a three-dimensional laser projector to project the shape and position size of the standard part to the to-be-measured shape and position size surface of the part, and judging whether the to-be-measured part meets the requirements of the standard part or not based on alignment of the to-be-measured shape and position size of the part and the shape and position size of the standard part. In the invention, the laser outline of the shape and position size of the standard part is correspondingly projected to the to-be-measured shape and position size surface of the part through the three-dimensional laser projector, the visual detection method combining laser projection and image fusion can quickly, accurately and comprehensively detect the to-be-measured shape and position size of the part in a non-contact manner, thereby judging whether the to-be-detected shape and position size of the part meets the requirements of the two-dimensional drawing of the standard part or not, and completing the rapid inspection of a product warehousing stage.

The invention discloses an automatic retraction type safety injector, which comprises an outer sleeve and a core rod arranged in the outer sleeve, wherein the front part of the outer sleeve is connected with a needle head component provided with a jacket; the needle head component comprises a needle tube, a needle tube base and a needle tube outer base; the front part of the outer sleeve is provided with an external conical locking joint connected with a threaded joint at the rear end part of the needle tube outer base; the outer sleeve is also connected with at least two elastic damping claws which extend forwards to the outside of the outer sleeve; the core rod is a hollow core rod, the front part of the core rod is provided with a bolt plug which extends forwards to the inside of the inner cavity, the core is connected with the bolt plug though through a plastic plug, a slip ring is arranged on the rear end of the bolt plug, a convex ring for blocking the slip ring is arranged on the inner wall of the core rod which is positioned on the rear side of the slip ring, the bolt plug positioned in the inner cavity is provided with a compression spring, and a clamping hollow cavity matched with a clamping cone is formed on the front end of the bolt plug. The automatic retraction type safety injector has a rational structure, is convenient to assemble and use and high in safety and can be directly collected for concentrated treatment after injection without manual operation such as breakage, and thus, the working efficiency of medical stuff is improved.

The invention discloses a wideband microwave antenna feed comprising a metal subreflecting surface, a medium block and a circular waveguide pipe, wherein the metal subreflecting surface is connected with the circular waveguide pipe by the medium block; the metal subreflecting surface, the medium block and the circular waveguide pipe are symmetrical corresponding to the same axial line, the top of the medium block is provided with a coaxial annular groove and a conical groove, and the corresponding position of the bottom of the metal subreflecting surface and the conical groove is provided with a matching taper. Because the structures of the medium block and the metal subreflecting surface are moulded, the upper part of the medium block is provided with the conical groove and at least one annular groove, and the bottom pf the metal subreflecting surface is provided with the matching taper corresponding to the conical groove in order to increase a variable factor of the feed; when passing through a circular step, electromagnetic waves can enter the medium block according to a certain mode proportion, then, the matching taper, the conical groove and the annular groove are mutually coordinated to regulate the amplitude and the phase of the electromagnetic waves, the effective bandwidth of the microwave antenna achieves about 20 percent, and the wideband microwave antenna feed has better popularizing and using values.

The invention discloses chopsticks, which comprise a connector and a clamping body. One end of the connector is provided with a buckling part, and one end of the clamping body is provided with a clamping part which is detachably connected with the buckling part of the connector. The center of the connector is provided with a cavity, the other end of the extension of the connector opposite to the clamping part is provided with a detachable end cap, and a chamber which can be used for storing toothpicks or seasoning is formed between the end cap and the connector. The chopsticks are convenient to carry, have simple structure, and are provided with the cavity for placing the toothpicks or the seasoning.

The invention discloses a spliced type normalized shelf assembly which comprises frame plates (1) and connection strips (2). The connection strips of the spliced type normalized shelf assembly respectively comprise six middle strips, six edge strips, four middle strips, four edge strips, four corner strips and six connection four-strips; the six middle strips, the six edge strips and the frame plates are combined to form a hexagonal honeycomb-shaped shelf; the four middle strips, the four edge strips, the four corner strips and the frame plates are combined to form a quadrilateral square-grid-shaped shelf; the six connection four-strips can be used for connecting the hexagonal honeycomb-shaped shelf and the quadrilateral shelf in series to form a hexagonal and quadrilateral shelf; the frame plates and the connection strips can be prefabricated into normalized profiles by a factory. During application, the frame plates and the connection strips can be captured and spliced on site; quick splicing use for families and supermarkets is facilitated, and particularly quick splicing exhibition arrangement and quick detaching exhibition removal are facilitated; due to the technical scheme of reuse after transition, manufacturing and application of the shelf fulfill the aims of reducing waste, shortening the working period and increasing the utilization rate.