25results about How to "Compact distribution" patented technology

The present invention belongs to the technical field of pipeline repair devices, and specifically relates to an automated fiber winding device for repairing defective pipelines. The present invention includes two sets of fixing mechanisms arranged relatively to clamp defective pipelines, a fiber winding device arranged between the two fixing mechanisms, and a connecting device arranged on the two fixing mechanisms to connect the fixing mechanisms and the fiber winding device; the fixing mechanisms and the fiber winding device are both provided with a C-shaped cavity for accommodating the defective pipeline, and when installed on the defective pipeline, the corresponding opening directions of the C-shaped cavities on the fixing mechanisms and the fiber winding device are consistent; when winding fibers around the defective pipeline, the fiber winding device slides on the connecting device along the axial direction of the pipeline. The fiber winding device can be arranged above, on the side, and below the pipeline for fiber winding work, and occupies less space, which solves the problem in the prior art that the fiber winding device cannot be placed on the side of the narrow space where the pipeline is located, thereby failing to repair the pipeline in the narrow space.

The invention relates to the technical field of metal surface treatment, in particular to a method for improving the surface performance of a metal part through salt bath composite nitriding treatment, and particularly relates to a salt bath composite nitriding treatment process for a high-wear-resistance and high-fatigue shaft pin. Comprising the following steps: 1) pretreatment: carrying out sand blasting cleaning on the shaft pin and polishing until Ra is less than or equal to 0.8 mu m; 2) salt bath composite nitriding treatment: immersing the shaft pin into a salt bath containing sodium cyanate, potassium cyanate, sodium carbonate, lithium carbonate and an additive, and keeping the temperature at 560 DEG C for 2-4 hours; and (3) cooling and strengthening treatment: slowly cooling after dynamically cooling to 500 DEG C, and releasing residual stress in combination with oxidation treatment and low-temperature tempering. According to the process, a compact nitriding layer and a micro-boronizing layer are formed through the synergistic effect of rare earth oxide and fluoride, so that the surface hardness of the shaft pin reaches HV800-1100, the depth of the nitriding layer is 0.1-0.3 mm, the wear resistance is remarkably improved, the fatigue life is remarkably prolonged, the corrosion resistance is remarkably improved, and the process is suitable for surface strengthening of high-load mechanical parts.

The invention provides a packaging structure of an intelligent power module, a driving circuit and an electronic product. The packaging structure comprises a packaging body, a first base island, a second base island, a third base island, a driving chip, a first power tube and a second power tube, the driving chip, the first power tube and the second power tube are respectively arranged on the first base island, the second base island and the third base island, the driving chip, the first power tube and the second power tube form a half-bridge driving structure, and each signal end is connected with a corresponding chip pin; wherein the first base island and the second base island are arranged on the same side of the third base island and are sequentially arranged along the side edge of the third base island, and the projection of the first base island, the projection of the second base island and the projection of the third base island on the side edge are partially or completely overlapped. The original structure and pin functions of the intelligent power module are reserved, the size of the module is greatly reduced, and the intelligent power module has the advantages of small size, good heat dissipation, high power and the like, and is suitable for realizing the design of a corresponding miniaturized circuit board.

The utility model discloses an electrostatic atomization soilless culture device which comprises a water storage tank (1), an electrostatic atomization device (4), a water pump (5), a liquid medicine tank (6), a high-voltage power supply device (7), a temperature and humidity sensor (8), a main body (9), a filter screen (10), an electronic controller (11), a magnetic field generating device (13) and a top cover (14). An electrostatic atomization device, a water pump, a liquid medicine box, a high-voltage power supply device, a high-voltage generator and an electronic controller are installed on the top cover, the water pump is connected with the water storage tank and the liquid medicine box through water pipes, a temperature and humidity sensor and a magnetic field generating device are installed in the body, a filter screen is installed on the lower portion in the body, and a plurality of channel openings are formed in the side wall of the body. The device is used for storing plants. The electrostatic atomization technology is used for atomizing liquid into charged tiny liquid drops, absorption of plant rhizomes is promoted, the growth environment needed by plants is detected, water and liquid medicine are provided in time, and the growth efficiency of the plants is improved.

The invention discloses a metric learning method and system for intelligent detection and recognition of small sample ship targets, particularly relates to the field of SAR image target recognition, and combines multi-scale features with feature vectors generated by metric learning, thereby improving the detection precision of different-scale targets. In order to solve the problem of unbalanced sampling of positive and negative samples, a dynamic weight control resampling strategy is adopted, the sampling probability is dynamically adjusted in the training process, oversampling of minority classes is gradually reduced, and sampling of majority classes is increased at the same time; the method is obviously superior to a baseline YOLOv5 model in the aspects of robustness and detection accuracy, and has good applicability and practical value.

The present invention provides a boron nitride@diamond nanocrystal epoxy resin composite material and a preparation method thereof, comprising the following steps: S1, dispersing boron nitride nanosheets in a buffer solution, adding dopamine hydrochloride, stirring and mixing at 50-60°C in the dark, and centrifuging to obtain modified boron nitride nanosheets; S2, dispersing the modified boron nitride nanosheets in water, then adding diamond nanocrystal dispersion under stirring conditions, then stirring at high speed, filtering, and obtaining diamond nanocrystal-loaded boron nitride nanosheet materials; S3, ultrasonically dispersing epoxy resin and diamond nanocrystal-loaded boron nitride nanosheet materials uniformly at 50-60°C, adding a curing agent after cooling, continuing ultrasonic dispersion, vacuum evacuating bubbles, tableting, and curing to obtain a boron nitride@diamond nanocrystal epoxy resin composite material. The present invention performs surface modification on BNNS by dopamine hydrochloride, and prepares a composite filler with ND, thereby improving the thermal conductivity of the composite material.

The utility model relates to computer hardware technical field discloses a set top box mainboard entity structure of optimization wiring layout, including set top box and host board, the inside installation of host board has heat abstract mechanism, heat abstract mechanism is used for the heat dissipation of host board, the top wall of machine body is provided with dust removal mechanism, dust removal mechanism is used for the dust removal of machine body, heat abstract mechanism includes micro motor, micro motor installs in the inside of host board, the output fixedly connected with pivot no.

The utility model discloses a cutter machining module and machining equipment. The cutter machining module comprises a first driving mechanism, a second driving mechanism and a cutter. The second driving mechanism is connected to the first driving mechanism and can be driven by the first driving mechanism to slide in the vertical direction, and the arrangement direction of the second driving mechanism and the arrangement direction of the first driving mechanism intersect in the vertical direction; the cutter is connected to the second driving mechanism and can be rotated by the second driving mechanism around an axis parallel to the vertical direction. According to the technical scheme, the cutter can be used for sliding machining, rotating machining and lifting machining, and therefore the workpiece machining modes of machining equipment are enriched.

The utility model discloses a juicer which comprises a shell, a material cutting module, a juicing module, a material storage module and a driving module, a feeding opening is formed in the top of the shell, and a material cutting space, a juicing space and a containing space are sequentially formed in the shell from top to bottom; the material cutting module is arranged in the material cutting space and used for cutting materials fed from the feeding port. The juicing module is arranged in the juicing space and used for squeezing the cut materials; the material storage module is arranged in the accommodating space and is used for accommodating squeezed materials and squeezed juice; the driving module comprises a driving part and a transmission assembly, the driving part is in driving connection with the cutting module and the juicing module through the transmission assembly, and the driving part and the storage module are both arranged close to the juicing module and are arranged relative to the two sides of the juicing module. According to the technical scheme, the juicer is compact in structure and small in size.

This invention belongs to the field of concrete building materials technology, and discloses a fiber-reinforced concrete segment suitable for dual control of micro-cracks and macro-cracks, and its preparation method. The fiber-reinforced concrete segment comprises cement-based concrete and crack-resistant fibers and structural fibers compositely added to the cement-based concrete. The crack-resistant fibers are fine steel fibers with a diameter of 0.15-0.25 mm and a length of 10-15 mm; the structural fibers are coarse polypropylene fibers with a diameter of 0.8-1.2 mm and a length of 40-60 mm; the volume fraction of the crack-resistant fibers is 0.5%-0.8%; and the volume fraction of the structural fibers is 0.5%-0.9%. The fiber-reinforced concrete segment provided by this invention can achieve continuous crack control, synergistic effect, and better economic efficiency.

The invention provides a locomotive auxiliary electrical cabinet, and relates to the technical field of rail transit. The locomotive auxiliary electrical cabinet comprises a cabinet body, and a first power module chamber, a second power module chamber, an input / output chamber and an open chamber which are arranged in the cabinet body. Wherein the input and output chamber is located at the corner of the cabinet body, and the input and output chamber is provided with a first side and a second side which are adjacent; the first power module chamber is arranged close to the first side of the input / output chamber and extends in a first direction in the plane direction of the cabinet body; one of the open chamber and the second power module chamber is arranged close to the second side of the input / output chamber and extends in a second direction in the plane direction of the cabinet body; the first direction is perpendicular to the second direction; and the open chamber and the second power module chamber are oppositely and closely arranged in the first direction. According to the locomotive auxiliary electrical cabinet, through modular design and reasonable layout of the power modules and the magnetic elements, the locomotive auxiliary electrical cabinet which is high in modular degree, light in weight and efficient is provided.

The application relates to the technical field of medical devices, and particularly discloses a minimally invasive blood vessel suturing device. In order to solve the problem that the outer diameter of a conventional suturing device entering a blood vessel is relatively large, a'second expansion' is caused to the blood vessel wall, and tissue damage is aggravated, the device comprises a holding part, a sheath pipe, a fixed end head, a suturing rod, a deformation assembly and a driving mechanism, one end of the sheath pipe is fixedly connected with the holding part; the fixed end head is fixed in the inner cavity of the end of the sheath pipe away from the holding part; the suturing rod is fixedly connected with the end of the fixed end head away from the sheath pipe and extends out of the sheath pipe, the diameter of the suturing rod is smaller than that of the fixed end head, and the outer diameter of the part of the suturing rod entering the blood vessel is not greater than 7 French; the deformation assembly is arranged on the suturing rod and is used for unfolding and abutting against the inner wall of the blood vessel after the suturing rod is inserted into the blood vessel; and the driving mechanism is arranged in the holding part and is used for driving the deformation assembly to unfold or fold. The application can reduce the secondary damage to the blood vessel puncture port.

The invention discloses an image processing method and related equipment so as to improve the quality of an image processed by a quantized image processing model. The method comprises the steps of obtaining a first image; according to the first image, a second image is obtained through a quantization image processing model, the quantization image processing model is a quantization model of a full-precision image processing model, and the full-precision image processing model comprises a target network layer and a data distribution optimization layer and / or a data distribution compression layer; the data distribution optimization layer and / or the data distribution compression layer are / is located on the input side of the target network layer, the data distribution optimization layer is used for optimizing data distribution of activation values input into the target network layer, and the data distribution compression layer is used for compressing the data distribution of the activation values input into the target network layer. The quantization model comprises a quantization network layer corresponding to the target network layer, and the quantization network layer is used for processing the first image or a feature value corresponding to the first image.

The invention provides a polyether-ether-ketone microporous injection molding local regulation and control method based on induction heating, which comprises the following steps: adding a polyether-ether-ketone material into micro-foaming injection molding equipment for storage, and fully mixing a polyether-ether-ketone melt with a foaming agent in a storage stage to form a supercritical fluid; before mold closing, an electromagnetic induction coil is used for locally heating a specific area of the micro-foaming injection molding equipment; and then the coil and the thermocouple are removed, the injection molding machine carries out mold closing, injection and pressure maintaining actions, after the pressure maintaining actions are finished, the movable mold carries out micro mold opening actions, after the micro mold opening actions are finished, normal cooling, mold opening and ejection actions are carried out, and the polyether-ether-ketone foaming product with the local foaming regulation and control characteristic can be obtained. The electromagnetic induction heating coil is used for locally heating the specific areas of the movable mold and the static mold, so that the local microstructure of the polyether-ether-ketone micro-foaming product is regulated and controlled, the crystallinity and the foaming effect of the areas are synergistically improved, and the original tensile property is kept.

The invention belongs to the technical field of food fresh-keeping equipment, and particularly provides an airflow guiding device for fresh-keeping equipment and the fresh-keeping equipment. The invention aims to solve the problem that the air conditioning device in the existing fresh-keeping equipment cannot carry out air conditioning on a plurality of fresh-keeping chambers. The airflow guiding device comprises a shell, an air door module and a draught fan. An air inlet cavity, a flow dividing cavity communicating with the air inlet cavity, a first air outlet channel, a first air return channel, a second air outlet channel and a second air return channel are defined in the shell, wherein the first air outlet channel, the first air return channel, the second air outlet channel and the second air return channel communicate with the flow dividing cavity. The air door module is arranged in the flow dividing cavity, and the air door module is configured to enable at least one of the first air outlet channel and the second air outlet channel to communicate with the air inlet cavity and enable at least one of the first air return channel and the second air return channel to be led to the air adjusting device through the flow dividing cavity. The fan is arranged in the air inlet cavity and used for driving air to enter the air inlet cavity. The technical problems are solved through the airflow guiding device.

The invention relates to the technical field of concrete pouring, in particular to a full-closed small box girder internal mold hydraulic demolding device which comprises a forming bottom plate, movable side plates, demolding side plates and a forming top plate. And demolding side plates are rotationally arranged on the left side and the right side of the top of the forming bottom plate through hinges. A closed pouring forming cavity is jointly formed by the forming bottom plate, the movable side plates, the demolding side plates and the forming top plate, concrete slurry leakage is prevented, it is guaranteed that concrete is evenly distributed, and it is guaranteed that all components are connected tightly and the positions are accurate through cooperation of limiting blocks at the bottom of the forming top plate and limiting grooves in the tops of the side plates; the size precision and shape regularity of the small box girder are guaranteed, steel bar positioning holes in the demolding side plates are matched with the fixed supporting frame, the movable supporting frame and the rotary supporting ring, accurate positioning is provided for steel bars, displacement of the steel bars in the concrete pouring process is avoided, and the structural strength and stability of the small box girder are improved.

This invention discloses a raw material screening device for stone paper processing, relating to the field of stone paper processing technology. It includes multiple L-shaped plates, with fixed rings fixedly connected to the outer sides of each L-shaped plate. The L-shaped plates are also fixedly connected to the outer sides of a rotating shaft. Multiple L-shaped plates are connected by multiple fixed rings, and a fixed rod is fixedly connected to the top of each fixed ring. A roller is rotatably connected to the bottom of each fixed rod. In this raw material screening device for stone paper processing, the raw material passes through the gap between the L-shaped plates and the fixed rings, thus performing preliminary screening. Simultaneously, the rotating shaft drives the fixed rods to rotate inside the ring grooves, and the rollers, under force, drive the frame to move upwards. As the rotating shaft rotates, the frame vibrates up and down. This combined rotation and vibration causes the raw material to continuously tumble and jump inside the frame, reducing the residence time of particles in the gaps between the frames and lowering the probability of sieve clogging.

The invention discloses a preparation method of a fireproof and moistureproof micro-foaming profile for a building energy-saving thermal insulation material, and relates to the technical field of building materials. The method comprises the following steps: collecting surface energy data of a polymer base material, a flame retardant and a moisture-proof functional filler and solubility parameters of a physical foaming agent; establishing a three-phase interfacial tension balance model, and solving an optimal cladding layer polarity parameter and thickness; coating the surfaces of the flame retardant particles with a moisture-proof agent layer and an amphiphilic polymer bridging layer in sequence to prepare a modeling functional unit; after mixing and plasticizing with a polymer base material, injecting a supercritical physical foaming agent to form a composite melt; establishing a non-isothermal mathematical model, and generating a space gradient dynamic temperature control program of the extrusion die and the stock die; and finally carrying out extrusion molding through the procedure. The prepared profile has excellent fireproof and moistureproof performance and heat preservation and insulation effects, is stable in structure, high in durability and high in process controllability, is suitable for large-scale production, and meets the high-performance requirement in the field of building energy conservation.

The invention relates to the technical field of non-stick pans, in particular to a low-lampblack wear-resistant non-stick pan and a manufacturing method thereof.The low-lampblack wear-resistant non-stick pan comprises a non-stick pan body, the non-stick pan body is composed of an antibacterial and anti-sticking layer and a pan body layer, the antibacterial and anti-sticking layer is fixedly connected to the outer side of the pan body layer, and a handrail assembly is fixedly connected to one side of the non-stick pan body; the pot body layer comprises a substrate layer, and the substrate layer is arranged at the bottommost part of the non-stick body; the pot body layer is composed of a base layer, a heat conduction layer and a base top layer, the base layer is made of tungsten steel alloy with high hardness and few impurities, a solid foundation is laid, and the service life is prolonged; the heat-conducting layer is made of high-purity copper material and high in heat conductivity, so that uniform heating is ensured, and the cooking effect is improved; the base top layer is made of chromium alloy and has good wear resistance and corrosion resistance to protect the surface of the cookware, the pot body layer is designed to be arc-shaped, the appearance is attractive, the safety is improved, the overall structure is reasonable, the strength, the heat conduction performance, the durability and the like are excellent, and the requirements of users for the high-quality cookware are met.

The present application relates to a kind of hair drying appliances, comprising: handle, motor is arranged in the handle;Shell, the shell is connected with the handle;Line board assembly, the line board assembly is set in the shell, multiple elements are provided on the line board assembly, line board frame, the line board frame is set in the shell, the line board assembly and the line board frame are arranged along the axial direction of the shell, recessed portion is provided on the line board frame, at least part of the element extends into the recessed portion.The structure of the hair drying appliance is more compact, smaller, more convenient for daily storage, and convenient for carrying out.

The invention discloses pretreatment equipment for flow fluorescence detection, and belongs to the technical field of in-vitro diagnostic equipment, the pretreatment equipment comprises an equipment platform, a channel module and a manipulator module are slidably connected to the equipment platform, the equipment platform is provided with a mixing module slidably connected between the channel module and the manipulator module, and the mixing module is provided with a flow detection module. The uniform mixing module comprises a cup base fixing plate, a cup base is rotationally connected to the cup base fixing plate through an eccentric wheel shaft, a magnetic cleaning module is arranged on the side, close to the mechanical arm module, of the equipment platform, and a carrier module is further arranged between the mechanical arm module and the channel module. According to the scheme, all the modules are reasonably arranged on the flow type fluorescence platform, the uniform mixing module can fully and uniformly mix objects such as samples and magnetic beads in a reaction cup, sampling is orderly completed through the channel module, sample transferring and other operations are completed through the mechanical arm module, and the efficiency of a flow type fluorescence detection test is improved.

The invention discloses a preparation method of a copper oxide-carbon nitride nanotube composite particle with a core-shell structure. The preparation method comprises the following steps: S1, preparing a carbon nitride nanotube by a water-induced phase transformation forming method; s2, dispersing a predetermined amount of carbon nitride nanotubes in deionized water, and uniformly mixing to obtain a carbon nitride dispersion liquid; s3, soluble copper salt is added into the carbon nitride dispersion liquid, stirring and mixing are conducted, drying and grinding are conducted, and mixed powder is obtained; and S4, calcining the mixed powder in a reducing atmosphere, and grinding to obtain the core-shell structure copper oxide-carbon nitride nanotube composite particles. The core-shell structure of the copper oxide-carbon nitride nanotube composite particle can adjust the electronic structure and improve the electrical properties of the material; cu2O nuclear energy is introduced, so that the energy band position of the core-shell structure nano-particles is raised, a Z-type energy band structure is formed, charge carrier transfer is accelerated, and the photo-reduction capacity is improved. The invention further discloses the copper oxide-carbon nitride nanotube composite particle with the core-shell structure and application of the copper oxide-carbon nitride nanotube composite particle.

The invention discloses a preparation method of a high-performance degradable nano composite aerogel material, which is characterized in that on the basis of a Pickering emulsion technology, nano cellulose is used as an emulsifier, a unique stereocomplex crystal structure of a degradable polylactic acid material is combined by virtue of a strong hydrogen bond between rich oxygen-containing functional groups on the surface of the nano cellulose and carbon nanotubes and a skeleton supporting effect, and the high-performance degradable nano composite aerogel material is prepared. The stereocomplex polylactic acid / nanocellulose / carbon nanotube nanocomposite aerogel is prepared based on a freeze-drying method, and the mechanical strength and the surface hydrophobic and oleophylic characteristics of the composite aerogel are enhanced by utilizing the high enhancement characteristic of nanocellulose and the regulation and control of aerogel crystallization and microporous structures by introducing stereocomplex crystals and carbon nanotubes; and high-efficiency oil-water separation is realized by utilizing the high adsorption characteristic of the composite aerogel meshes.

According to the heat exchange assembly, at least part of the third face of a block part is attached to the outer surface of a first collecting pipe, a first cavity and a second cavity do not communicate with each other in the first collecting pipe, a third cavity and a fourth cavity do not communicate with each other in a second collecting pipe, and an inner cavity of a first heat exchange pipe communicates with the second cavity and the fourth cavity; an inner cavity of the communicating pipe communicates with the first cavity and the third cavity, the second cavity communicates with the second channel, and the first cavity communicates with the third channel. The three-way reversing device has a first working state and a second working state, in the first working state, the first channel, the circulation channel, the second channel and the second cavity are communicated, and in the second working state, the first channel, the circulation channel, the third channel and the first cavity are communicated. In the application, the opening of the first channel on the surface of the block part is located on the first surface, and the openings of the second channel and the third channel on the surface of the block part are located on the same side of the block part; a component communicated with the first channel, a component communicated with the second channel and a component communicated with the third channel can be distributed on the peripheral side of the three-way reversing device in a relatively compact mode, and occupied space is reduced. According to the heat exchange assembly, the first channel selectively communicates with the second channel or the third channel, through the arrangement of the three-way reversing device and the communicating pipe, a pipeline communicating with the third channel is integrated into the heat exchange core body, the structure of the heat exchange assembly is compact, and the occupied space can be reduced easily.