94results about How to "Reduce voids" patented technology

The invention provides a back contact photovoltaic cell piece capable of preventing stacking scratch in a high-temperature passivation process. The back contact photovoltaic cell piece comprises a back contact photovoltaic cell piece body and a plurality of soft isolation protrusions located on the light receiving face of the back contact photovoltaic cell piece body. The soft isolation protrusions are used for supporting photovoltaic cells to be mutually isolated when the photovoltaic cells are stacked layer by layer, and the soft isolation protrusions are resistant to high temperature of 300 DEG C and do not become sticky or yellow within 3 hours. According to the invention, the soft isolation projections are arranged on the light receiving surface of the back contact photovoltaic cell sheet body to support mutual isolation of the photovoltaic cell sheets when the photovoltaic cell sheets are stacked layer by layer, so that the photovoltaic cell sheets can be protected from being scratched in the stacking and moving process; the flexible isolation protrusions are arranged on the back contact photovoltaic cell piece, the flexible isolation protrusions can be prevented from scratching the surface of the photovoltaic cell piece due to the specific flexibility of the flexible isolation protrusions, meanwhile, the flexible isolation protrusions can bear the passivation temperature of 300 DEG C or above and do not crack or yellow or adhere to the cell piece, and therefore it can be ensured that the back contact photovoltaic cell piece is subjected to high-temperature passivation in a multi-layer stacking mode, and the passivation efficiency is improved.

The invention belongs to the technical field of path planning and robot motion planning, and particularly relates to a multi-strategy fusion improved RRT * sampling planning method and device and a storage medium, and the method comprises the steps: constructing a dual-search tree through a starting point and a target point in a three-dimensional working space, and selecting a to-be-expanded search tree through a random mode; halton-Bridge mixed sampling is adopted to generate sampling points, so that the global coverage uniformity is improved, and the narrow channel sampling capability is enhanced; calculating the dynamic step length of the exponential decay based on the local obstacle proportion; adopting a hierarchical guidance expansion strategy, preferentially expanding towards a target, introducing an improved artificial potential field to guide expansion when the expansion fails, and taking the bottom with random expansion; performing RRT * neighborhood father node reselection and reconnection optimization on the new node; greedy pruning, self-adaptive interpolation and cubic B-spline smoothing are carried out on a path after the double trees are connected, and an executable smoothing track is output; according to the scheme, planning efficiency, success rate and path quality are improved.

The utility model relates to cigarette production auxiliary equipment technical field discloses a kind of tobacco material plastic outer package collecting devices, including collecting frame, blocking mechanism, adjusting mechanism and lifting mechanism, the collecting frame upper portion is provided with blocking area and non-blocking area, the blocking area is located directly above collecting frame, the blocking mechanism is set in the collecting frame upper portion, the adjusting mechanism is connected with blocking mechanism transmission, the adjusting mechanism is used to make blocking mechanism switch position between blocking area and non-blocking area, the lifting mechanism is set in the collecting frame lower portion, the lifting mechanism is used to lift collecting frame, when the blocking mechanism is located in blocking area, and the lifting mechanism lifts collecting frame, the blocking mechanism enters the extrusion plastic outer package in collecting frame in collecting frame. The utility model can solve the problem that the gap between plastic outer package in collecting frame is larger in prior art, resulting in the problem of reduced storage capacity of collecting frame.

The invention discloses a preparation method of a standardized sheet for a thermoelectric test of minerals or mineral materials and alloys, belongs to the technical field of mineralogy, material science and prospecting prediction, and establishes a preparation process of a universal mineral or mineral material and alloy thermoelectric sheet. Covering all semiconductor mineral types or mineral material types such as pyrite, magnetite, graphite and sintered ore; accurate thickness control is achieved through a double-face polishing-loading sheet supporting structure, in-situ testing of the thermoelectricity of minerals or mineral materials and alloys is achieved, and the testing precision is improved; by adopting a conductive adhesive-copper plate composite structure, the interface resistance is reduced, the supporting strength is met, and the requirement of eliminating detection interference is met; residual colloid is thoroughly removed through ultrasonic cleaning, and the insulation effect is avoided; according to the standardized sheet, the hollow aminated phenolic resin nanosphere is used as a conductive substrate and is used for bonding a sample and a copper plate, the contact resistance between the sample and an electrode can be greatly reduced, and the accuracy of test data is improved.

The utility model belongs to the technical field of assembly type building construction, and particularly relates to an assembly type building hoisting device which comprises a supporting seat. A servo motor is fixedly connected to the bottom of the supporting seat, a straight shaft is fixedly connected to the top of the servo motor and rotationally connected with the supporting seat, a plurality of cables are fixedly connected to the outer side of the straight shaft, a plurality of through holes are formed in the outer side of the supporting seat, the cables are slidably connected with the through holes, and hoisting clamping blocks are fixedly connected to the ends of the through holes. A clamping groove is formed in one side of the hoisting clamping block, a rope is fixedly connected to the top of the hoisting clamping block, a hook is fixedly connected to one end of the rope, the supporting base is arranged to support the center of the assembly plate, the servo motor is used for adjusting a cable, assembly plates of different sizes can be conveniently matched for use, and rapid adjustment is achieved; and the use is flexible and convenient.

The application discloses a WC+TiC particle reinforced high-entropy alloy coating and a preparation method thereof, and belongs to the field of coating preparation. The coating comprises a bottom layer, and the chemical components and mass percentages of the bottom layer are as follows: carbon: 0.1-0.5%, boron: 1-1.3%, chromium: 19-21%, nickel: 21-24%, silicon: 1-1.5%, molybdenum: 8-10%, cobalt: 22-24%, sulfur: 0.005-0.015%, phosphorus: 0.015-0.045%, and the balance is iron and inevitable impurities; and a working layer, and the chemical components and mass percentages of the working layer are as follows: WC: 15-25%, X: 1.5-4.5%, and the balance of components and the proportion between the components are the same as those of the bottom layer, wherein the X is TiC particles coated with Ni on the surface. The method is used for preparing the coating, and compared with a conventional coating, can effectively improve the wear resistance and corrosion resistance of the coating, and prolong the service life of equipment.

The utility model discloses a solid-liquid separation device in a chip cleaner, which relates to the technical field of metal processing, and comprises a chip cleaner shell and a separation device, an upper compression roller is arranged close to the upper part in the separation device, a lower compression roller is arranged close to a feeding belt in the separation device, a sieve plate is arranged below the lower compression roller, and the upper compression roller and the lower compression roller are arranged in the separation device. A first waste box is arranged below the sieve plate close to the left side, and a second waste box is arranged below the sieve plate close to the right side. The separating device is arranged at the tail end of the chip cleaner, the two pressing rollers extrude metal chips, residual cutting fluid on the surfaces of the chips is filtered out and falls onto the screen plate to be further screened out through vibration, the cutting fluid penetrates through holes of the screen plate and enters different waste boxes together with the metal chips to be collected, and more efficient separation of the separating device is achieved.

The utility model relates to the technical field of environment-friendly waste paperboard compression equipment, and discloses energy-saving environment-friendly waste paperboard compression equipment which comprises a compression box, a box frame is fixedly connected to the left side of the compression box, a door shaft is arranged on the front side of the box frame, and a box door is fixedly installed on the right side of the door shaft. A clamping base is fixedly connected to the front side of the box door, a door pin is arranged at the upper end of the clamping base, a control switch is fixedly installed on the right side of the compression box, and a main hydraulic cylinder and an auxiliary hydraulic cylinder are arranged in the compression box. According to the energy-saving and environment-friendly waste paperboard compression equipment, through the arrangement of the crushing mechanism, a driving motor can be used for driving a first gear and a second gear to rotate in an engaged mode, so that a first crushing roller and a second crushing roller are driven to crush waste paperboards, the waste paperboards are crushed into small blocks, and subsequent block pressing treatment is facilitated; when the small waste paper is compressed, the compression resistance can be reduced, the small waste paper can be stacked more tightly, gaps are reduced, and the compression ratio is increased.

The invention discloses a site construction method for a perlite heat insulation layer of an LNG storage tank, and relates to the technical field of LNG storage tanks, and the site construction method comprises the following steps: step 1, increasing the number of perlite filling ports at the top of the tank, reducing a repose angle to 22 degrees when a connecting pipe is poured, and reducing gaps and uneven density; step 2, drying and replacing the perlite filler so as to reduce the moisture and oxygen content of the perlite filler; 3, the dried and replaced perlite filler is fed into perlite filling openings for filling, perlite is fed into a storage tank in a gas driving mode in the perlite filling process, in order to guarantee the online perlite filling effect and filling safety, the number of the filling openings is increased, the filling quality of expanded perlite is improved, and the production cost is reduced. The conditions of gaps and non-uniform density are reduced, so that the cold insulation effect is improved, the evaporation rate of the LNG storage tank is reduced, and the LNG in the storage tank is kept in an ideal storage state.

The invention aims at providing surveying equipment for hydrogeological survey, and relates to the technical field of measuring equipment, the surveying equipment comprises an electrode bar assembly, the electrode bar assembly comprises a pole, a pole cap and a drilling rod, and the electrode bar assembly is used for being connected with soil and measuring the resistivity of the soil; the driving assembly comprises a battery pack, a threaded sleeve, a shaft sleeve and a motor and is used for driving the electrode bar assembly to insert underground; the compaction assembly comprises a pressing rod, a first pressing plate and a second pressing plate, and it can be guaranteed that soil is attached to the electrode bar assembly. And the straightening assembly comprises a third mounting plate, a laser range finder, a measuring plate, a lens and a developing plate, plays an auxiliary role in insertion of the electrode bar assembly, ensures that the electrode bar assembly is linearly distributed, and solves the problems that the measurement position is deviated and the accuracy and the reliability of measurement data are influenced due to the fact that the electrode bar is easily inclined when being manually inserted in the prior art.

The application discloses a method for preparing submicron and micron alkylated graphene oxide by using coal, and comprises the following steps: 1, graphitizing coal powder to rearrange carbon atoms and grow submicron crystal regions; 2, oxidizing and peeling the graphitized coal under the action of sulfuric acid, phosphoric acid and potassium permanganate; 3, adding hydrogen peroxide to react with potassium permanganate and high-valence manganese salt in the solution until the solution turns yellow; 4, screening the solution to remove unreacted black impurities; 5, centrifuging the solution to reserve the precipitate, and then washing and centrifuging the precipitate with dilute hydrochloric acid and ethanol; 6, dispersing the precipitate with diethyl ether, and then obtaining graphene oxide powder through suction filtration. The prepared graphene oxide has an average size of 800 nm, an average layer number of 1-2 layers, and a yield of 107%. The method has simple steps, low cost and high yield, and is easy to realize industrial production, and has a very broad prospect in the present situation of urgently realizing high-value utilization of coal.

The utility model relates to the field of power supply waterproof, especially an outdoor power supply waterproof device. The technical problem is that the existing outdoor power supply is inconvenient to protect the socket when charging, moisture can easily pollute the power supply socket when charging, and rainwater can easily enter the dust screen, resulting in poor waterproof performance of the power supply when charging and in rainy days. An outdoor power supply waterproof device, comprising a protective shell, a socket fixed to the protective shell, two dust screens fixed to the protective shell, a top cover fixed to the top of the protective shell, and a water blocking mechanism arranged on the protective shell. The user straightens the charging cord and places it in the waterproof cover gap, presses the sealing plate to contact the waterproof cover, tightens the buckle to make the sealing plate adhere to the waterproof cover, the air pump inflates the sealing air bag, and the sealing air bag expands to block the gap between the waterproof cover gap and the sealing plate. It is convenient to protect the socket when charging, reduces the possibility of moisture polluting the power supply socket when charging, and improves the waterproof performance of the power supply when charging.

The invention relates to the technical field of tunnel engineering, and discloses a karst area tunnel gushing water treatment construction method which comprises the steps that drainage pipes are installed on the two inner side walls of a tunnel in advance correspondingly, and the drainage pipes are located on the lower portion of the tunnel; when water gushing occurs on the inner side wall of the tunnel, a fixed base is installed on the inner side wall of the tunnel; the sealing cover sleeving the drainage tube and the fixed base are sealed and closed, so that the fixed base and the sealing cover define a sealed cavity; a grouting pipeline is connected between the sealing cavity and the grouting pump in a sealed mode, and grouting materials are injected into the sealing cavity through cooperation of the grouting pump and the grouting pipeline; along with continuous increase of the grouting material in the sealing cavity, the grouting material in the sealing cavity penetrates through one or more groups of grouting rings to grout all the grouting holes; the situation that the grouting material overflows during grouting can be effectively avoided, and sufficient grouting can be conducted on a water gushing area; and the conditions of gaps or non-uniform grouting are reduced.

This invention relates to a chip packaging structure and its fabrication method. The chip packaging structure includes two components: a device substrate and a cap. Each component has a solder ring, and the two solder rings are bonded together. At least one of the solder rings is an adaptive solder ring, which is connected to the corresponding component via a flexible transition layer. In this invention, a flexible transition layer is provided between the solder ring and the component. During bonding, this flexible transition layer can adaptively adjust with the bonding pressure. Even if the solder rings have uneven thickness, it can ensure sufficient contact between the two solder rings, reducing voids and gaps in the solder bonding and greatly improving the packaging quality.

The invention relates to an aluminum liner preparation method and a semiconductor. The method comprises the steps of providing a substrate; growing an aluminum metal layer with a first thickness on the substrate; wherein the first thickness is greater than the groove height of the substrate; the plane where the aluminum metal layer is located is made to be opposite to the surface of corrosive liquid, and the aluminum metal layer is partially placed in the corrosive liquid for a preset time and then taken out; and after reducing a film layer generated by reaction of the surface of the aluminum metal layer and the corrosive liquid, growing an aluminum metal layer with a second thickness on one side, facing the aluminum metal layer, of the substrate to obtain the aluminum liner with a target thickness. According to the method, through the combined process of primary excessive aluminum deposition and secondary aluminum deposition, the problems of ox horn defects and insufficient aluminum layer thickness caused by a traditional magnetron sputtering process are effectively eliminated, and the generation probability of the cavity problem in the subsequent process is reduced.

This application relates to the field of anti-buoyancy technology in building engineering, and particularly to an anti-buoyancy anchor construction process and an anti-buoyancy anchor, comprising: S1: preliminary preparation; S2: rod assembly; S3: hole drilling and enlarging, drilling a deep hole at a preset position, and after drilling to the target depth, performing end enlarging construction within the enlarged hole depth range to form an anchoring grouting zone; S4: anchor lowering, lowering the finished anchor to the target depth in the hole, at which time the enlarged bladder extends into the sediment at the bottom of the hole; S5: grouting operation, injecting grout into the enlarged bladder through a grouting pipe to expand the enlarged bladder and push the sediment at the bottom of the hole outward until the enlarged bladder is filled with grout, completing the grouting construction in one step, and completing the grouting construction of the gap between the anchor rod and the inner wall of the hole; S6: prestressing locking; S7: casting to obtain the anchor anti-buoyancy system; This application has the effect of reducing the possibility that sediment at the bottom of the hole will combine with the concrete mortar during the grouting process and affect the anchoring effect of the anti-buoyancy anchor.

The utility model relates to a sampler technical field especially is a kind of small food sampler, including tube, the one side of tube is fixedly connected with sealing strip, tube bottom end is fixedly connected with connecting assembly, rotating sampling assembly is rotatably connected in tube inside, the inside fixed connection of connecting assembly has aeration assembly, rotating assembly is rotatably connected with aeration assembly outside, aeration assembly lower end is fixedly connected with air bag assembly, connecting assembly includes connecting ring, annular hole is arranged in the inside of connecting ring, annular groove is arranged in the bottom end of connecting ring, clamping groove is arranged in the inside of connecting ring, rotating sampling assembly includes rotating sampling piece, rotating sampling piece bottom end is fixedly connected with support connection magnetic block, the breakthrough fusion of miniaturization structure design and epidemic prevention safety performance is realized in the present application, ensure that the sample amount of each sampling operation is taken out accurately and up to standard, residual attached in device can also be removed by airflow disturbance, avoid the cross contamination between different batches of samples.

The invention belongs to the technical field of insulation board construction equipment, and particularly relates to fabricated building external wall insulation board construction equipment which comprises an electric sliding rail and an insulation board, the top of the output end of the electric sliding rail is fixedly connected with a first electric telescopic rod, and the output end of the first electric telescopic rod is fixedly connected with a supporting plate; a door-shaped plate is fixedly mounted at the top of the supporting plate, a storage bin is fixedly mounted at the top of the door-shaped plate, a servo motor is fixedly mounted on the side face of the storage bin, and two first gears are rotationally connected to the inner wall of the storage bin. And then a push plate is pushed through a second electric telescopic rod so that the heat preservation plate can be pasted on the outer wall, the heat preservation plate can be comprehensively assembled on the outer wall through an electric sliding rail and a first electric telescopic rod, and therefore the heat preservation plate can be safely and rapidly installed.

The utility model relates to ceiling cloth technology field discloses an aluminium alloy ceiling cloth device, including conveying mechanism, fixed installation in the cloth machine of conveying mechanism, located one scraper mechanism of cloth machine side and located secondary scraper mechanism of one scraper mechanism side, and still be provided with frame between one scraper mechanism and secondary scraper mechanism, and one side fixed mounting of frame has servo motor, and fixed mounting has screw rod in servo motor output end, and fixed mounting has guide shaft body between the frame, still install drive type sliding block on screw rod, fixed mounting has pneumatic cylinder in drive type sliding block bottom, and pneumatic cylinder output end installs locating panel, and locating mechanism is provided with below locating panel, this aluminium alloy ceiling cloth device, utilize first scraper and second scraper to carry out scraping flat processing to the cloth of corner, force cloth and corner base material to be closely attached through physical pressure, reduce bubble and interstice, avoid the peeling problem caused by uneven adhesive.

The utility model relates to the technical field of medical instruments, and provides a plugging support and a plugging balloon catheter, and the plugging support comprises a supporting part and an intercepting part; the supporting part can be contracted and unfolded for supporting, one end of the intercepting part is connected with the supporting part, the other end of the intercepting part is gradually contracted and extends to form a cone shape, the supporting part and the intercepting part are both provided with hollowed-out parts, and a woven mesh is arranged in the hollowed-out part of at least one of the supporting part and the intercepting part. According to the utility model, the woven mesh is arranged in the hollow part of at least one of the supporting part and the intercepting part, so that the gap of the occlusion stent is further reduced, and the woven mesh can better leave substances in blood vessels, so that the occlusion time is shortened, and the clinical requirements of acute vascular embolism occlusion are met.

This invention relates to a core-shell structured sodium iron phosphate pyrophosphate cathode material, its preparation method, electrode sheet, and battery, belonging to the technical field of methods or devices for directly converting chemical energy into electrical energy. The core-shell structured sodium iron phosphate pyrophosphate cathode material of this invention comprises primary particles, each primary particle including: a core, a sodium iron phosphate pyrophosphate shell layer disposed on at least a portion of the surface of the core, and a carbon coating layer located within the pores and on the surface of the sodium iron phosphate pyrophosphate shell layer; the core includes a NASICON-type sodium-ion inorganic solid electrolyte with an average particle size ≤50nm; the average thickness of the sodium iron phosphate pyrophosphate shell layer is ≤500nm; the chemical formula of the sodium iron phosphate pyrophosphate shell layer is Na₄Fe₂O₃. 3‑ x M x (PO4)2P2O7, 0≤x≤0.9, M is a doped metal element. The core-shell structured sodium iron phosphate pyrophosphate cathode material of this invention combines high solid density, high conductivity and good electrochemical performance.

The utility model provides a condenser pipe fitting connecting assembly, and belongs to the technical field of pipe fitting connection. Comprising a connector and further comprises anti-loosening assemblies, the anti-loosening assemblies are arranged at the two ends of the connector, each anti-loosening assembly comprises nuts connected to the two ends of the connector and a clamping plate arranged on one side of the corresponding nut, one side of each nut is connected with a clamping column, and a clamping groove is formed in the side, close to the corresponding clamping column, of each clamping plate; the nut is clamped with the clamping plate through the clamping column and the clamping groove; the reinforcing assembly is arranged on the outer side of the anti-loosening assembly and used for fixing the clamping plate; by arranging the anti-loosening assembly, the clamping plate is pushed towards the nut, so that the clamping column on the nut is clamped into the clamping groove of the clamping plate, the clamping plate and the clamping column are matched to form a mechanical clamping structure, additional anti-rotation torque can be provided for the nut, the nut can be prevented from loosening due to vibration, impact or pressure fluctuation, and the anti-loosening effect is good. And the stability and the service life of the clamping sleeve type connecting assembly can be improved.

This invention relates to the field of waste collection technology. The invention discloses a waste collection device for baking pan processing, comprising: a machine body, with crushing rollers symmetrically arranged on the inner wall of the machine body, and guide plates symmetrically arranged on the inner wall of the machine body near the crushing rollers; and a feeding bin fixedly connected to the outer wall of the machine body. The waste collection device further includes: an adjustment mechanism for evenly distributing waste above the crushing rollers; the outer wall of the auxiliary component is fixedly connected to the inner wall of the machine body away from the guide plates. By setting up the feeding mechanism, this invention separates small pieces of debris and smaller waste residue from large pieces of waste, preventing smaller pieces from being crushed again by the crushing rollers, which would lead to over-crushing of the waste, making it difficult to collect and easily generating dust. The device also crushes the waste, reducing gaps between pieces and preventing long strips of waste from bending at the inlet due to external force when entering the machine body.

The utility model relates to a train tail battery with a stable structure, which comprises a shell and a battery module, the shell is a cylinder which is composed of a bottom shell and an upper cover detachably connected to the bottom shell, the cross section of the cylinder is triangular, the cylinder is provided with an accommodating space matched with the battery module, the battery module is arranged in the accommodating space, and the battery module is arranged in the accommodating space. The battery module is of a triangular cylinder structure formed by arranging a plurality of cylindrical battery cells into a triangle, and a connecting piece connected with the battery module is arranged on the outer side face of the bottom of the shell. The battery cells of the train tail battery are arranged in a triangular shape, gaps among the battery cells are small, compared with rectangular or square arrangement, space is saved, the size of a battery shell can be reduced, space layout optimization of a train tail main machine is facilitated, and the battery cells arranged in the triangular shape are arranged in a convex-concave staggered mode and tightly attached to each other to form a resultant force supporting effect. The possibility that the train tail battery is impacted or vibrated to shake and shift in the using process is reduced, and the structural stability of the train tail battery is improved.

The application relates to a kind of automobile seat adjusting devices, including the seat body 1 that angle is adjustable relative to vehicle body, the seat body 1 is movably sleeved in the first rotating rod 3, and the first rotating rod 3 is provided with operating handle 2, the operating handle 2 is movably arranged relative to seat body 1, and the operating handle 2 is provided with mechanical locking mechanism 4;The application improves the structure of the existing automobile seat adjusting device, the motor adjustment is changed into mechanical adjustment after improvement, so that when the motor is damaged, the seat can still play the role of adjustment.

The utility model provides a multifunctional sand mixer casting mold, which relates to the technical field of casting molds, and comprises a frame, the inner side of the frame is slidably connected with a plurality of mold plates, the outer sides of the mold plates are fixedly connected with a plurality of sliding push rods, the outer sides of the plurality of sliding push rods are fixedly connected with a push plate, and the push plate is fixedly connected with the outer sides of the plurality of sliding push rods. And a rotating hole is formed in the inner side of the pushing plate, a rotating wheel is rotationally connected to the inner side of the rotating hole, a rotating ring is fixedly connected to the outer side of the rotating wheel, a threaded rod is fixedly connected to the inner side of the rotating wheel, a plurality of fixing frames are fixedly connected to the outer side of the frame, and a flow dividing mechanism is arranged at the tops of the multiple templates. According to the utility model, the push plate enables the sliding push rod to move inwards along the push rod hole, the templates move inwards along with the push rod hole, and the size of the die can be changed by changing the distance between the four templates, so that the production of models with different sizes is realized, the utilization rate of the die is improved, the waste is reduced, and the production efficiency is improved.

The utility model discloses a steel structure column foot fixing assembly which structurally comprises a steel plate integrally embedded in a concrete base, threaded column feet are embedded in the four corners of the top of the concrete base, and connecting plates penetrate through the surfaces of the threaded column feet and are fastened through fastening nuts. A steel stand column is integrally welded to the top of the connecting plate. The first guide seat slides on the inner surface of the connecting frame, so that the reinforcing plate slides into the mounting hole corresponding to the connecting block and is fixed through the vertical bolt and the fastening nut, the connecting block and the reinforcing plate are fastened in a threaded mode, and meanwhile the transverse bolt penetrates through the inner surface of the through hole, so that the connecting block and the reinforcing plate are fastened in a threaded mode. The transverse bolt penetrates through the first guide seat and fastens the position of the first guide seat through the fastening nut, so that the purposes of reinforcing the periphery of the connecting plate and improving the stability of the column foot can be achieved, and the situation of unstable stress caused by cracks between the threaded column foot and the concrete seat is avoided.

The application discloses a preparation process of a heat-dissipating circuit board with inlaid copper columns and a product thereof, and comprises the following steps: (1) drilling; (2) copper plating; (3) placing copper columns and plating copper again. The application provides a preparation process of a heat-dissipating circuit board with inlaid copper columns and a product thereof, wherein holes are drilled in the area of the circuit board that needs heat dissipation, the hole wall is made conductive by copper plating, and copper columns are inlaid to achieve excellent heat-dissipating effect. The application adopts hole-filling electroplating technology to make the gap filling more sufficient by optimizing the process flow, and the adhesion between the copper column and the copper base material is not realized by glue but by electroplated copper adhesion.

This utility model discloses a highly flexible, tensile-resistant shielded power cable, comprising a conductor layer, a fastening layer, an insulation layer, a shielding layer, and a sheath layer arranged coaxially from the inside out. The fastening layer is a heat-shrinkable braided tubing, which, after heat shrinking, forms a tight, compressed fit with the outer surface of the conductor layer, significantly improving the cable's tensile strength. The shielding layer is a heat-shrinkable tube with a metal wire braided mesh layer. Before heat shrinking, its original inner diameter D1 and the outer diameter D2 of the insulation layer satisfy 1.1 ≤ D1 / D2 ≤ 1.2; after heat shrinking, its final inner diameter D1' and D2 satisfy 1.02 ≤ D1' / D2 ≤ 1.08, ensuring a tight electromagnetic shielding contact between the shielding layer and the outer surface of the insulation layer. This utility model, through its unique interlayer heat-shrinkable fastening and shielding structure, achieves a balance between excellent flexibility, small diameter, high tensile strength, and stable shielding, making it particularly suitable for scenarios requiring frequent bending and small-area wiring, such as stage equipment and automotive wiring harnesses.