1650 results about "Metal mesh" patented technology

The invention relates to a coal seam extraction drilling air bag type memory metal net cover hole collapse prevention device and method, the device comprises an I-type air bag net cover installation unit body, a plurality of II-type air bag net cover installation unit bodies and an inflator pump, an exhaust pipeline is provided with an exhaust control valve, a hole wall is supported through a memory metal net cover, and the air bag net cover installation unit body and the inflator pump are arranged in the hole wall; the memory metal net sleeves can be matched with drill holes with different hole diameters in a self-adaptive mode and can be repeatedly used, the configuration number of the memory metal net sleeves can be greatly reduced, and therefore the processing cost of hole collapse prevention is further reduced; the installation of the memory metal net sleeve is directly controlled by the expansion of the air bag, so that the memory metal net sleeve can be quickly unfolded and reliably contacted with the hole wall; the removal of the memory metal net sleeve is directly controlled by temperature control gas, so that the memory metal net sleeve retracts to an initial state at the recovery temperature and is separated from the hole wall; the mounting and dismounting process of the memory metal net cover has the advantages of being simple, efficient and easy to operate, and the construction efficiency can be further improved.

Systems, assemblies, apparatuses, and methods herein may provide an enhanced fluid seal between two components. A seal to enhance a fluid seal between a surface of a first component of a pump and a surface of a second component of the pump may include an annular seal body having a seal body surface and a seal cross-section at least partially defined by the seal body surface. The annular seal body may include a metal mesh, thereby to enhance thermal conductivity between the seal and one or more of the first component or the second component, so as to transfer heat from the seal to one or more of the first component or the second component, thereby to reduce a temperature of the seal and extend a service life of the seal.

The embodiment of the invention provides a conductive film, a metal grid touch screen sensor, a touch module and a preparation method of the conductive film. The problem that in the prior art, a conductive film is prone to breakage after being bent for multiple times is solved. The conductive film includes a substrate layer, a first conductive layer, and a first outer blackening layer. The substrate layer is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the substrate layer; the first conductive layer comprises a plurality of first conductive sub-layers, the plurality of first conductive sub-layers are sequentially stacked on the first surface of the substrate layer, the thickness of each first conductive sub-layer is smaller than a first preset value, and the number of the first conductive sub-layers is larger than a second preset value; the first outer blackening layer is stacked on the first conductive sub-layer on the outermost layer. The touch module prepared from the conductive film provided by the embodiment of the invention has the advantages of good fracture resistance and high visual quality.

The invention provides a flexible interference network deployment method and system based on carbon fiber conductive cloth. The method comprises the following steps: acquiring space field intensity data in a non-uniform electromagnetic field environment, and performing physical field correction on the space field intensity data to generate compensation field intensity data; a metal screen cloth structure is formed on the surface of the carbon fiber, and porosity distribution parameters are obtained through gradient difference generation treatment; forming a metal mesh cloth layer with gradient pore size distribution, and performing deformation adaptation on the pore size distribution in combination with real-time bending curvature data to generate dynamic and stable porosity distribution; based on electromagnetic field intensity associated region division on the metal mesh layer, dynamically adjusting the grounding resistance value of each divided region, and generating a resistance regulation and control parameter; physical connection between the metal screen cloth layer and the grounding end is realized, and electromagnetic shielding effectiveness parameters are output. According to the invention, adaptive shielding effectiveness optimization of the flexible interference network in a complex electromagnetic environment is realized.

The invention discloses an energy storage battery box based on light high-performance concrete and a preparation method of the energy storage battery box, and belongs to the technical field of energy storage equipment. The energy storage battery box provided by the invention comprises a light high-performance concrete base body and a metal net embedded in the light high-performance concrete base body, according to the lightweight high-performance concrete matrix, a multi-component gel system composed of ordinary Portland cement, a shrinkage reducing agent, a solid waste-based geopolymer and steel slag micro powder is adopted, and solid waste-based artificial sand, fibers and a solid waste-based filling material in a specific proportion are compounded, so that a lightweight high-strength intrinsically fireproof concrete material is successfully prepared; meanwhile, a large amount of industrial solid wastes such as the desulfurized gypsum, the red mud, the steel slag tailings and the fly ash are utilized, efficient resource utilization is achieved, the raw material cost and full-life-cycle carbon emission are remarkably reduced, and the production efficiency is high.

The invention relates to the technical field of metal net welding, in particular to a welding control method and system for the metal net production process, and the method specifically comprises the steps that firstly, functional areas are divided based on the geometric structure of a metal net, temperature changes in thermal imaging images of all the functional areas are analyzed in real time, and weights of different areas are defined; environmental parameters and equipment state data are collected in real time through multiple types of sensors, and comprehensive deviation of materials, environments and equipment at all moments is calculated in combination with material characteristic parameters; adjusting the proportion parameter of each functional area at each moment based on the weight and the comprehensive deviation, and dynamically adjusting the welding power of each functional area at each moment in combination with a self-adaptive PID (Proportion Integration Differentiation) algorithm; the problems that under traditional unified parameter control, the weld quality is not uniform, and the production line rhythm and energy consumption cannot be considered at the same time are solved, and the production efficiency is improved while the welding quality is guaranteed.

The invention relates to the technical field of flexible transparent electrodes, in particular to a Cu / Al laminated metal grid flexible transparent electrode and a preparation method thereof. The Cu / Al laminated metal grid flexible transparent electrode comprises a flexible substrate, a copper layer arranged on the flexible substrate and an aluminum layer arranged on the copper layer, and the aluminum layer located on the outer layer spontaneously forms an Al2O3 passivation layer with the thickness of 2-5 nm in air. The Al2O3 passivation layer can effectively prevent oxygen and moisture from permeating inwards, so that oxidation of the copper layer in a humid or high-temperature environment is fundamentally inhibited, long-term stability of the electrical property of the electrode is ensured, and meanwhile, due to the fact that the thickness of the copper layer is 150-250 nm, excellent conductivity is provided, and low square resistance is achieved; the latticed structure maintains high light transmittance of the electrode while ensuring a high conductive path. Finally, the structure has excellent oxidation resistance, high light transmittance, low sheet resistance and flexible stability under the support of a flexible transparent substrate with the thickness of 50-200 [mu] m, and meets the harsh requirements of a new generation of flexible optoelectronic devices on electrode performance.

The utility model discloses an aluminum ingot production and processing casting machine conveying device which comprises a supporting column, a transmission roller is arranged on the supporting column, a metal net belt is arranged on the transmission roller in a transmission mode, a beam is arranged on the supporting column, a recycling box is arranged on one side of the metal net belt, an aluminum ingot limiting device is arranged on the metal net belt, and a conveying belt is arranged on the aluminum ingot limiting device. A spray cooling device is arranged on the cross beam, a water receiving device is arranged on the cross beam and located between the metal net belts, and an air drying device is arranged on the cross beam. The utility model belongs to the technical field of aluminum ingot conveying and processing, and particularly relates to a conveying device of an aluminum ingot production and processing casting machine, which solves the problems that in the prior art, aluminum ingots are easy to slide in the conveying process due to lack of limiting measures for the aluminum ingots when the aluminum ingots are conveyed, and meanwhile, the aluminum ingots are lack of a rapid cooling and heat dissipation function.

A downspout guard having opposed sidewalls and opposed end walls connected to a top wall, all formed from mesh material, such as metal mesh. Bottom edges of the walls engage a gutter bottom wall to hold the guard in place and forcing water to flow through the guard before entering the downspout. The sidewalls can engage gutter front / back walls, further holding the guard in place. Trapped debris enhances further debris entrapment, even trapping particles smaller than the mesh opening. Optionally, end walls taller than the sidewalls to accommodate obstructions and allow height adjustment by relative angle changes.

The invention discloses a mesh antenna metal net zero-constraint splicing method. A metal net is tiled and hung on a working tension applying device, and working tension is applied to the metal net in the transverse direction and the longitudinal direction; in the working tension state, tension control belts are sewn on the edges of the two sides of the metal net in the length direction; lapping two metal nets which need to be spliced and are sewn with the same tension control belts, wherein the sections of the lapping positions are lapped according to the sequence of belt-net-net-belt; sewing two layers of metal nets along the two sides of the tension control belt by adopting composite material sewing lines; and repeating the steps, and sewing all the metal meshes required by the whole antenna reflecting surface in sequence. According to the method, the metal net is spliced by adopting an overlock stitching method, the tension control belt can be detached after splicing is completed, the formed splicing seam is of a net-net structure, the thickness is only 0.07-0.08 mm, the elasticity keeps the original elasticity of the metal net, the net surface tension is more uniform, and the risk that the antenna expansion resistance is increased due to micro shrinkage of the tension control belt at high temperature is effectively eliminated.

The invention relates to a light UHPC-based logistics tray and a preparation method thereof, and belongs to the technical field of logistics trays. The logistics tray comprises a light UHPC base body and a metal net. The light UHPC matrix is prepared from the following raw materials in parts by mass: 885 to 930 parts of ordinary Portland cement, 45 to 50 parts of solid waste-based sulfur aluminum iron series low-carbon cementing material, 380 to 570 parts of solid waste-based artificial sand, 0 to 150 parts of filler, 15 to 20 parts of fiber, 2 to 4 parts of HPMC, 20 to 49 parts of water reducing agent and 180 to 210 parts of water. The lightweight UHPC matrix adopts a composite cementing material, and the composite cementing material contained in the raw materials for preparing the added solid-waste-based artificial sand is similar to the cementing material of the lightweight UHPC matrix, so that a hydration product of the cementing material can be embedded into micropores in the solid-waste-based artificial sand; and the solid waste proportion in the solid waste-based artificial sand can reach 80% or above, so that the mechanical strength requirement of the logistics tray can still be met.

The application discloses a bottle-shaped sound-electricity conversion power generation device, which comprises a shell, a PVDF film, a metal net and a piezoelectric component.

The invention relates to a dry tar-containing tail gas treatment process which comprises the following steps: step 1, after tail gas is collected by a pipeline, granulating tail gas enters a pipeline degreaser under the air draft action of a tail gas fan at the tail end; the invention relates to the technical field of tar-containing granulation tail gas treatment. According to the dry tar-containing tail gas treatment process, tar larger than or equal to 10 microns is intercepted through a detachable filter screen in a pipeline degreaser, and blockage is prevented in cooperation with a steam / solvent flushing opening; the dry type preprocessor adopts three-stage gradient filtration of a G3 metal net, G4 glass fibers and G5 glass fibers, viscous particles below 5 microns are thoroughly removed, and automatic overload alarm is realized through pressure difference detection; submicron oil mist is adsorbed by the electric trapping oil remover through a high-voltage electric field, safety is guaranteed through an explosion venting sheet, and electrodes are continuously / discontinuously flushed through a spraying pipe; the cleaning system separates a mixing / circulating area through a partition plate, an oil separation net protects a flushing water pump, and long-term stable operation of the device is achieved. The problem that tar is difficult to clean due to adhesion is thoroughly solved.

The invention relates to the technical field of welding, in particular to an optical detection system for gas components in a stabilizer welding tool, a welding tool box and a gas adding system are prepared, and an upper plate of the welding tool box is provided with an operation window; the welding tool box is provided with a glass window; the gas component detection system comprises a beam splitter and a movable reflecting mirror, and a light path between the beam splitter and the movable reflecting mirror penetrates through the glass window; a metal net cylinder is arranged between the opposite glass windows of the welding tool box; a light path penetrates through the hollow part of the metal net cylinder; the gas component detection system further comprises an interference path stroke difference adjusting system; the interference path stroke difference adjusting system comprises a glass container, and the glass container is arranged on a light path between the beam splitter and the movable reflector; the interference path stroke difference adjusting system further comprises an air pump, and the air pump is connected with a sulfur hexafluoride gas source. Therefore, the stability of argon in the welding tool box is ensured, and the welding quality of the stabilizer is improved.

The invention relates to the technical field of wet metal separation, in particular to wet metal separation and wind drying equipment which comprises a first workbench, first supporting plates are fixedly connected to the four corners of the top of the first workbench, transmission parts are arranged on the inner sides of the first supporting plates, and an acid pickling part is arranged at the top of the first workbench. The front side of the first workbench is fixedly connected with a second workbench. According to the wet-process metal separation and wind-power drying equipment, efficient treatment of metal parts is achieved through cooperative work of the innovatively-designed transmission component and the acid pickling component, a cross beam structure driven by a reciprocating lead screw is adopted to be matched with a cam-rope linkage mechanism, and therefore lifting vibration precisely controlled by + / -5 degrees is achieved while a metal net cylinder horizontally moves; fitting of metal pieces is effectively prevented; a second toothed plate and gear meshing system designed in an involute tooth shape drives a rotary rubber rod array, acid liquor permeation is promoted through high-frequency random knocking, and the oxide stripping efficiency is improved by 40%.

The present application relates to the technical field of contaminated soil cleaning, and particularly relates to a cleaning equipment for treating soil pollution, which comprises a base plate, a containing box is fixed on the top of the base plate, a metal mesh bag is fixed in communication at the bottom of the containing box, squeezing mechanisms are arranged around the metal mesh bag, the squeezing mechanism comprises a lead screw, an L-shaped rod one is in screw transmission on the outside of the lead screw, and a squeezing plate is fixed at one end of the L-shaped rod one. In the present application, the contaminated soil is contained by using the metal mesh bag, the two squeezing plates arranged relatively around the metal mesh bag can successively and staggeredly squeeze the soil, which is convenient for crushing the contaminated soil, makes the soil fully contact with the leaching agent for purification, and also facilitates fully crushing the soil to make it fall to the bottom of the chemical solution tank through the mesh holes of the metal mesh bag, the impurities such as plastics, stones and packaging bags which are not easy to be squeezed and crushed are left in the metal mesh bag, and the impurities in the contaminated soil are cleaned out.

The invention provides a preparation method of a Joule heat-assisted super-wetting metal net, a metal net with super-hydrophilic performance and a metal net with super-hydrophobic performance. According to the material, carbon nanotubes are firmly adhered to the surface of a metal net through polydopamine mediation to construct a micro-nano coarse structure, a hydrophobic alkyl compound is grafted through a sulfenyl three-component coupling reaction to reduce surface energy, and a super-hydrophilic / underwater super-oleophobic metal net and a super-hydrophobic metal net are prepared respectively. The Joule heating effect of the material is remarkably enhanced by introducing the carbon nanotubes, so that the temperature of the material can be rapidly increased to 100 DEG C or above within 20 seconds under the ultralow voltage of 2.0 V. The characteristic can be effectively used for in-situ heating viscosity reduction of high-viscosity crude oil, continuous and efficient oil-water separation is achieved in a double-channel separation device, the crude oil flux reaches up to about 3985 L.m <-2 >. H <-1 >, and the separation efficiency exceeds 98.6%. The method is also suitable for stainless steel meshes with micron-sized apertures, and can realize efficient separation of various crude oil emulsions.

The invention belongs to the field of coal mining, and particularly discloses a coal mining method for caving top coal in front of a coal face frame, which comprises the following steps of: S1, extending a telescopic beam to a coal wall support top plate, paving a metal net along a coal wall, and binding and connecting the metal net with a hydraulic support side protection plate to form a metal net false top; s2, a hydraulic support side protection plate above a front roller of the coal mining machine is contracted in advance, a coal seam at the bottom of the working face is cut according to the mining and caving ratio, and a coal caving opening is located at the front end of a hydraulic support telescopic beam; s3, the top coal seam is slowly released to a scraper conveyor to be conveyed out under the shielding action of a metal net and a hydraulic support side protection plate by stretching out and retracting a hydraulic support telescopic beam front and back; the coal discharging port is located in front of the support, top coal is slowly discharged to the scraper conveyor to be conveyed out from the side protection plate in front of the telescopic beam under the shielding effect of the laid metal net false roof, and the method has the advantages of being high in coal resource recovery rate, simple in construction organization and high in hydraulic support applicability.

The invention discloses a reinforced photoelectric composite cable of a coal mining machine, which belongs to the technical field of cables, and comprises a composite cable core structure, an armored protective layer and a sheath system, and the armored protective layer comprises a first steel belt, a second steel belt and a metal net braid layer, a third steel belt which is continuously bent to be of a wave structure is arranged in a cavity formed by the first steel belt and the second steel belt, the wave troughs of the third steel belt make contact with the inner wall of the first steel belt, and the wave crests of the third steel belt make contact with the inner wall of the second steel belt. The cable can be subjected to multi-dimensional mechanical property collaborative optimization under complex working conditions, the purpose of graded unloading is achieved through deformation of the steel plate, the situation that a traditional structure generally depends on rigid resistance of an armor layer is not needed, the flexibility is considered while the mechanical property is guaranteed, and the cable adapts to frequent bending scenes; and the long-term stable operation of the cable in a severe mine environment is further ensured.

The invention discloses lithium battery assembly welding equipment with an automatic positioning function, and relates to the technical field of welding. The welding structure comprises a fixing frame connected with the tail end of the portal frame, a lifting driving assembly installed on the fixing frame, a first supporting frame driven by the lifting driving assembly, four dampers fixedly connected with the bottom of the first supporting frame, and a second supporting frame fixedly connected among the piston ends of the four dampers. The elastic piece is arranged in the second supporting frame, and the partition plate, the metal net plate, the outer ring and the gas guide assembly are installed on the outer side of the second supporting frame, so that the work of grabbing the cover plate, positioning and assembling the cover plate and the battery pole, assembling the cover plate and the shell and the like is automatically completed, and the machining period needed by assembling and welding the lithium battery composed of the cover plate, the shell and the battery is shortened; before the cover plate and the shell are welded by the laser welding device, the upper pole of the battery and the cover plate are automatically positioned, and the upper pole of the battery is sealed and protected.

The utility model relates to the technical field of dehydrated vegetable production, and discloses a dehydrated vegetable hot air drying device which comprises a device body, a first motor is fixedly installed in the device body, the output end of the first motor is in spline connection with a first transmission rod, and one end of the first transmission rod is fixedly connected with an installation groove. The hot air drying equipment comprises a first motor, a first transmission rod, a mounting groove, a clamping plate is inserted into the mounting groove, a metal net is fixedly connected into the clamping plate, and a limiting plate is connected to one side of the mounting groove. During use, a first motor drives a clamping plate inserted in a mounting groove to rotate through a first transmission rod, the clamping plate and a metal net on the clamping plate clamp dried dehydrated vegetables, and the vegetables are turned over continuously in the rotating process, so that the effect of uniform drying is achieved.

The invention discloses a metal grid transparent conductive film which sequentially comprises a transparent base material layer, a metal grid layer, a transition layer and a protection layer from bottom to top. The manufacturing method comprises the steps of pretreating the transparent base material, preparing the metal seed layer, performing laser direct writing patterning, performing electroplating thickening to form the metal grid layer, preparing the transition layer and the protective layer, and performing performance test and adjustment. The hexagonal honeycomb grid structure and the arc edge design are adopted, and the problem of metal grid electric field concentration is effectively solved; through the arrangement of the transition layer, the interface bonding force of the metal grid is improved; the protection layer and the transition layer cooperate to improve the corrosion resistance of the film; the problems that an existing transparent conductive material is high in cost, poor in flexibility and insufficient in interface compatibility, and an electrochromic device is concentrated in electric field, short in service life and the like are effectively solved, and the transparent conductive material can be widely applied to building intelligent windows, automobile anti-dazzle rearview mirrors, flexible display panels and other electrochromic devices and has important industrial application value.

The invention relates to the technical field of printing screens, in particular to a pure opening printing screen and a manufacturing method thereof.The manufacturing method of the pure opening printing screen comprises the steps that a polyethylene film and metal mesh cloth are sequentially attached to a polyester mesh, the metal mesh cloth and the polyester mesh are tightly attached together in a hot pressing mode, and composite mesh cloth is formed; the designed processing drawing is guided into a laser machine, and a yarn removing area, a yarn removing path and a yarn removing sequence are set; starting a yarn removing program of the laser machine, completely removing steel wires in the X-axis direction and the Y-axis direction of the yarn removing area of the composite screen cloth, and forming a hollow opening in the yarn removing area of the composite screen cloth; carrying out plate making by adopting the composite screen cloth which is qualified after the product inspection to obtain a pure opening printing screen plate; according to the manufactured pure-opening printing screen, the printing screen can achieve the effect that no steel wire blocks an ink discharging channel in a required effective area, and the situation that the steel wire influences the printability and the printing effect of an ink penetrating area is avoided.

The invention relates to the technical field of screen printing plates, in particular to a surface coating structure and process for prolonging the service life of a screen printing plate, and the surface coating structure comprises a screen frame, a metal net is arranged in the screen frame, a pattern area right opposite to a battery piece is arranged on the metal net, and a plurality of pattern openings used for printing electrode grid lines on the battery piece are formed in the pattern area. The pattern area comprises a long edge and a wide edge, the direction of the long edge of the pattern area is parallel to the moving direction of the scraper, the metal net comprises a P surface facing the battery piece and an S surface opposite to the battery piece, the P surface is covered with a printing PI film, the S surface is covered with a reinforcing PI film, and the reinforcing PI film is provided with a notch structure used for exposing a pattern opening. And a layer of reinforced PI film is additionally arranged on the S surface to wrap and protect the metal net, and when the metal net is extruded by the scraper, the reinforced PI film can share most pressure, so that the metal net is protected, and the overall service life is prolonged. And the gap structure ensures that the silver paste can normally penetrate through the pattern area for silk-screen printing.

This invention discloses a surface-mount solid aluminum electrolytic capacitor and its manufacturing method, comprising a capacitor core package, which includes N capacitor cores, N+1 conductive metal meshes, a substrate, anode leads, cathode leads, and a silver paste covering tape. The capacitor core package is encapsulated and electroplated to form a solid aluminum electrolytic capacitor. The capacitor core includes an anode portion, a cathode portion, and an insulating barrier tape. In this invention, the conductive metal mesh sandwiched between the metal pads in the anode portion of the capacitor core and the cathode portion of the capacitor core can achieve the flatness of the core package. The silver paste covering tape located on the side of the cathode portion of the core package is embedded in the gap formed between two adjacent capacitor cores due to the conductive metal mesh sandwiched, forming an integrated connection. This prevents the resin encapsulant from being squeezed into the core layers during encapsulation, preventing core deformation damage that could lead to increased leakage current and increased ESR. Furthermore, it can prevent insufficient capacitance or even capacitor failure caused by delamination between cores.

The utility model discloses a flexible insulating low-voltage cable, which comprises an outer sheath, a first fireproof layer fixedly connected to the inner wall of the outer sheath, a first antistatic layer fixedly connected to the inner wall of the first fireproof layer, a plurality of cable cores annularly arranged in the middle of the outer sheath, a metal net fixedly connected to the outer walls of the plurality of cable cores, and a second antistatic layer fixedly connected to the inner wall of the metal net. A second anti-static layer is fixedly connected to the outer wall of the metal net, a second fireproof layer is fixedly connected to the outer wall of the second anti-static layer, a first flexible rod is installed in the middle of the outer sheath, and a plurality of second flexible rods are annularly installed on the outer side of the first flexible rod. Through the above structure, the cable core can be better protected, the cable core is not damaged when the outer sheath of the cable is on fire, and after the cable is bent, the cable is supported by the first flexible rod and the second flexible rod, so that the cable core can be prevented from being deformed.

The utility model discloses an oblique staggered metal mesh silk-screen printing plate which comprises a screen frame, a metal mesh and a printing plate wire groove, the metal mesh is tensioned on the screen frame through a tensioning wire mesh, the printing plate wire groove is arranged on the metal mesh, the metal mesh is formed by interweaving variable-pitch silk threads and equidistant silk threads in a crossed mode, and the printing plate wire groove is arranged on the printing plate wire groove. The cross included angle alpha between the variable-pitch silk threads and the equidistant silk threads is 75-85 degrees; the printing plate wire groove is located between two adjacent variable-pitch silk threads, and one groove side or two groove sides of at least one printing plate wire groove are provided with two variable-pitch silk threads which are close to each other. The two variable-pitch silk threads close to each other comprise offset silk threads and weaving silk threads, and the offset silk threads are formed by offsetting the weaving silk threads. And the printing plate wire groove is parallel to the variable-pitch silk thread. The diameter of the variable-pitch silk threads and the diameter of the equidistant silk threads range from 6 micrometers to 10 micrometers. The screen printing plate not only can prevent silk threads from crossing a screen to form an existing screen printing wire slot area, but also can ensure the tensile strength of a silk screen of the screen printing plate and the shaping completeness of printed grid lines.

A conductive self-lubricating bearing based on a metal mesh extension structure and a preparation method thereof, the conductive self-lubricating bearing based on a metal mesh extension structure includes a body and a through hole. The body includes a low-friction layer and a conductive mesh. The conductive mesh has a plurality of mesh holes arranged in an array. The conductive mesh is embedded in the low-friction layer and part of the conductive mesh is evenly exposed on one end face of the low-friction layer. The exposed part is a conductive contact and is used to contact an external workpiece. The low-friction layer is provided with an end face that exposes the conductive mesh as a conductive surface, and the other end face of the low-friction layer is a non-conductive surface. The through hole is formed by punching out the conductive surface. During punching, the conductive mesh located in the through hole is extended to the non-conductive surface, allowing the internal and external workpieces of the body to pass current, thereby realizing the integrated processing of the through hole and the metal mesh extension, eliminating the secondary processing step of the notch.

The utility model relates to a double-spliced showing stand, and relates to the technical field of showing stands, the double-spliced showing stand comprises a metal plate, first composite plates are fixedly arranged on the two sides of the metal plate in the width direction, a second composite plate is fixedly arranged on one side of the metal plate in the length direction, and each first composite plate comprises a first acrylic plate; the first composite plate comprises a first acrylic plate, first metal net plates are fixedly arranged on the two sides of the first acrylic plate, the second composite plate comprises a second acrylic plate, and a second metal net plate is fixedly arranged on the side, away from the metal plate, of the second acrylic plate. By reasonably designing the composite material structure, high strength, high stability and good light transmission of the showing stand are achieved, meanwhile, the weight of the showing stand is reduced, and convenience of installation and use is improved.

The invention discloses an anti-torsion cross-linked polyethylene insulated power cable applied to the field of cables, which comprises a petal framework composite structure comprising hollow strips, a main support layer and a buffer layer, and an outer layer protection structure formed by branch protection rings and an elastic metal net. The problems that in the prior art, a cable is prone to structural damage and performance degradation under the torsion working condition are solved, a main supporting layer in a petal framework disperses torsion stress through deformation, a buffer layer absorbs impact energy, a hollow supporting layer provides structural rigidity, and the main supporting layer, the buffer layer and the hollow supporting layer form an elastic supporting-buffer energy absorption-rigid stability synergistic system; therefore, the cable with the petal framework composite structure has excellent torsion resistance. And meanwhile, dynamic heat dissipation and temperature regulation and control are realized through fluid circulation of the hollow supporting layer and the sensing array, and the structural integrity and transmission stability of the wire core under complex working conditions are guaranteed.