310results about How to "Reduce cracking" patented technology

This invention discloses a low-damage steel frame structure and a prefabrication and assembly method. The structure includes: a foundation, a first frame column, a second frame column, frame beams, floor slabs, beam end connectors, and column bottom connectors. The first frame column is installed on the foundation via column bottom connectors. The second frame column is positioned above the first frame column, with the number of second frame columns determined according to the number of structural floors. The connection points between the first and second frame columns, as well as the connection points between two adjacent second frame columns, are located at the inflection points of each floor. The frame beams are fixedly connected to the second frame columns on both sides via beam end connectors. The floor slab is positioned on the upper surface of the frame beams. This invention enables the beam-column joints and column bottom joints to achieve a bending-shear separation stress mechanism, extending the plastic hinge areas at the beam ends and column bottoms, thereby reducing damage to the beam-column joints and column bottom joints, minimizing residual deformation of the steel frame structure, and improving the seismic toughness of the structure. All structural components can be prefabricated in a factory and assembled on-site, facilitating construction.

This utility model relates to the field of cooling equipment, specifically to a gear steel slow cooling device for improving the flaw detection pass rate. The device includes a frame located at the outlet of the crystallizer. Multiple cooling units are spaced apart on the frame. Each cooling unit includes four telescopic rods, adjacent rods being perpendicular to each other. Spray nozzles are connected to the ends of the telescopic rods, and each nozzle is connected to a flexible metal hose. A main water supply pipe is mounted on the frame, connected to a water supply unit. Multiple branch pipes are installed on the main water supply pipe, each corresponding to a cooling unit. Each branch pipe is equipped with an electrically controlled valve and connected to its corresponding flexible metal hose. Multiple infrared temperature sensors are spaced apart on the frame. This utility model regulates the cooling rate of the gear steel continuous casting billet, allowing for slow cooling, reducing internal stress, minimizing cracks, and improving the flaw detection pass rate.

The invention relates to a flat composite material (1') for producing a package (20), comprising a polymer outer layer, a polymer inner layer, a fiber-containing carrier layer arranged between the polymer outer layer and the polymer inner layer, wherein the flat composite material (1') has a plurality of folding lines which are arranged and designed in such a way that a closed package (20) can be produced by folding the flat composite material (1') along the folding lines and by connecting the seam faces of the flat composite material (1'); a sleeve face (3) comprising a front face (14), a first side face (16A), a second side face (16B), a first back face (15A) and a second back face (15B); a bottom face (5), wherein the bottom face (5) comprises a triangular bottom face (5') and a quadrangular bottom face (5"); a gable face (6), wherein the gable face (6) comprises a triangular gable face (6') and a quadrangular gable face (6"), wherein the bottom face (5) and the gable face (6) are arranged on opposite sides of the sleeve face (3). In order to produce a package with a more complex geometry in the gable and bottom region, at least one quadrangular gable face (6") is provided with two small gable face angles (a G1 ) of less than 90°, two large gable face angles (a G2 ) of more than 90°, the angle sum being greater than 360°. The invention also relates to a package sleeve (9') made of the composite material and to a composite material package (20) made of the composite material (1') or of the package sleeve (9').

The invention relates to the technical field of clinical detection of cerebrospinal fluid, and particularly discloses a smear device for detecting cerebrospinal fluid, which mainly comprises a sample tube and a piston assembly, the sample tube comprises a first tube body, a second tube body and a third tube body; the second pipe body is located above the first pipe body, a liquid outlet hole is formed in the bottom, and a liquid inlet hole is formed in the side wall; the bottom of the third pipe body is communicated with the liquid inlet hole through a flow channel; the piston assembly comprises a piston, a handle part and a center rod; the piston is fixedly connected with a tongue part, the center rod can be inserted into the liquid outlet hole, and the piston assembly is provided with an initial station and a flaking station. According to the smear device for detecting the cerebrospinal fluid, the manufacturing process of a cell smear is simplified, operation is convenient and fast, the smear manufacturing efficiency is remarkably improved, the smear manufacturing time is shortened, unnecessary physical damage to cells in the smear manufacturing process is avoided, then cell rupture and dissolution can be effectively reduced, and the smear quality is remarkably improved; meanwhile, the comprehensive cost of manufacturing the cell smear is obviously reduced.

This utility model relates to the field of spillway tunnel support technology, specifically a reinforcement support device for spillway tunnel excavation. It includes a fixed frame, with lifting blocks bolted to both ends of the fixed frame. A support block is slidably connected to the lower end of each lifting block, and a support base is fixed to the lower end of each support block. Multiple brackets are fixed to the top surface of the lifting blocks. Connecting seats are fixed to the outer ends of the brackets and both ends of the top surface of the fixed frame. Arc-shaped blocks are bolted to the connecting seats. A first pressure-relief block is fixed between two adjacent arc-shaped blocks. A second pressure-relief component is installed at the end of each bracket near the arc-shaped block. A connecting component, including an insert block, is installed on the arc-shaped block. The first pressure-relief block between adjacent arc-shaped blocks and the second pressure-relief component at the end of the bracket undergo controllable limited deformation, absorbing the energy released by the surrounding rock while maintaining stable support for the surrounding rock. This reduces the rigid stress on the structure, decreases brittle failures such as retaining wall cracking, support bending, and joint collapse, and lowers the risk of collapse.

A preparation method of a controllable CNTs@PyC interface layer in carbon / carbon composite material, ZIF-67 with different distribution patterns is carried on the surface of carbon fiber; CNTs are in-situ generated from ZIF-67 through chemical vapor deposition, CNTs are distributed on the surface of carbon fiber in different growth patterns; PyC is deposited on the surface of carbon fiber, different shapes of CNTs@PyC interface layer shape are obtained, by controlling the different growth patterns of ZIF-67 on the surface of carbon fiber, the different distribution states of CNTs derived exist, so as to realize the controllable and adjustable interface layer shape, to meet the application requirements under different conditions: the circular ring shape reduces the stress concentration of CNTs@PyC interface layer, avoids a large number of cracks in the composite material. The wave shape is beneficial to the application of carbon / carbon composite material in the service environment under the tensile condition, prolongs the crack propagation path along the interface layer, effectively relieves the PyC ring cracking phenomenon around the fiber, and is more easy to realize the interlocking effect between the interface layer and the carbon matrix, effectively prevents the interface debonding phenomenon, and greatly improves the mechanical properties of carbon / carbon composite material.

This invention discloses a silicon nitride grinding device, relating to the technical field of silicon nitride grinding devices. The device includes a support frame and a collection box. A conical cylinder is fixedly mounted on the upper surface of the support frame, and the collection box is disposed on the lower surface of the support frame. A feed trough is fixedly mounted on the upper surface of the conical cylinder, and a water storage tank is fixedly mounted on the circumferential surface of the conical cylinder. A water spray head is provided on the inner wall of the conical cylinder. A rotating shaft is rotatably mounted on the upper surface of the inner wall of the conical cylinder, and a grinding head is fixedly mounted on the lower surface of the rotating shaft. A grinding disc is fixedly mounted on the inner wall of the conical cylinder. A material unblocking device is also provided inside the conical cylinder. When the feed trough is blocked, it affects the grinding efficiency, potentially causing a decrease in output or production stoppage. Blockage causes material to accumulate in the feed trough, increasing the pressure and stress on the material. If this blockage persists for a long time, it may damage the feed trough.

A microfluidic chip and detection system are disclosed. The microfluidic chip includes: a sample storage chamber for storing the sample to be dispersed; a continuous phase storage chamber for storing the continuous phase; a droplet generation array for generating two-phase microdroplets from the sample and the continuous phase; and a droplet spreading chamber for spreading the generated two-phase microdroplets. By integrating the sample storage chamber, continuous phase storage chamber, droplet generation array, and droplet spreading chamber into a single integrated structure, the enclosed space effectively reduces the risk of droplet breakage and reagent contamination during droplet transfer to the droplet spreading chamber. The detection system includes: a centrifugal drive shaft and a centrifugal loading disk; several detection units fixed on the centrifugal loading disk; and a microfluidic chip fixed on each detection unit. The detection unit integrates a temperature control module, an excitation light module, and an optical detection module, enabling the entire process from droplet generation to detection, reducing the overall construction cost of the detection system and achieving device miniaturization.

The utility model relates to a kind of LED epitaxial structures, comprising: substrate;N type layer;Active layer is located on N type;P type layer, located on active layer;Wherein, the P type layer includes P type window layer, P type window layer includes several first laminated structure, each first laminated structure includes the GaInP layer, first GaP layer and second GaP layer of sequentially laminated, the P type doping concentration of second GaP layer in each first laminated structure is greater than the P type doping concentration of first GaP layer.The GaInP layer of the utility model has higher band gap, plays the role of optical window layer, can reduce light absorption loss;GaP has lower band gap, first GaP layer and second GaP layer play the role of buffer layer / transition layer, so the combination of GaInP layer, first GaP layer and second GaP layer realizes the balance of band matching and carrier transport efficiency, conducive to the efficient extension of current.

This invention discloses a tooling mold for manufacturing brake discs and a method for manufacturing brake discs. The tooling mold includes an insertion section whose shape matches the shape of the heat dissipation holes and achieves an interference fit after insertion. The end of the insertion section is fixedly connected to a sliding groove via a connecting rod. A sliding plate, which cooperates with the sliding groove, enables position adjustment of the insertion section. This invention offers flexible overall adjustment and can be used for combined adjustment of the spacing for brake discs of different sizes, facilitating operator operation. The method of manufacturing brake discs using this invention reduces the difficulty of drilling holes in carbon-carbon composite brake disc preforms, reducing processing volume; it reduces the time and material consumption required for brake disc vapor deposition; it improves the smoothness of the inner surface of the heat dissipation holes, reducing processing volume and avoiding dynamic imbalance and airflow velocity uniformity issues caused by rough holes; it promotes uniform product material, ensures uniform expansion coefficient, and reduces the probability of product cracking.

The application relates to a dual-phase high-entropy ceramic material for high-temperature thermal barrier coatings and a preparation method thereof, in particular to a dual-phase high-entropy ceramic (La 0.2 Nd 0.2 Gd 0.2 Y 0.2 Ho 0.2 )2Zr2O7 with low thermal conductivity and high thermal expansion coefficient, which is mainly used for thermal isolation, thermal barrier coatings and other applications in high-temperature environments. The application is prepared by adopting a solid-phase reaction sintering process through accurate design of the combination of rare earth elements, forms a stable dual-phase structure, effectively inhibits grain growth through grain boundary pinning, and thus maintains a nanoscale grain structure. Meanwhile, the material can efficiently block heat transfer at high temperatures through optimization of phase proportion, and the thermal expansion characteristics are matched with a metal base layer, effectively avoiding the falling risk caused by the difference in thermal expansion of the two, and thus greatly improving the service life and reliability of the material in a high-temperature environment. The high-entropy ceramic material of the application can be widely applied to fields with high demand for high-temperature thermal isolation in aerospace, aviation, automobile industry and the like, is especially suitable for thermal barrier coatings, high-temperature thermal insulation materials and other high-temperature thermal insulation applications, and has important engineering application value.

The invention relates to the technical field of photovoltaic cells, in particular to a photovoltaic module. The photovoltaic module comprises a glass cover plate, the glass cover plate comprises a glass body, the glass body is provided with a first surface and a second surface which are oppositely arranged in the thickness direction of the glass cover plate, and the first surface is the face away from the battery pack. The first surface is provided with a plurality of uniformly distributed concave parts, and a gap is formed between the concave part at the edge position and the edge of the glass body. The depth D1 of the recessed portion satisfies 10 [mu] m < = D1 < = 30 [mu] m. And the distance D3 between the concave part at the edge position and the edge of the glass body is greater than or equal to 2mm and less than or equal to 6.5 mm. According to the invention, the first surface is provided with the recessed part, and under the condition that the thickness and weight of the glass cover plate are not increased, the structural strength of the glass cover plate is enhanced, and the stress is dispersed, so that the impact resistance of the glass cover plate is improved, the risk that the glass cover plate is cracked or broken due to impact is reduced, and the service life of the glass cover plate and the photovoltaic module is prolonged.

The application discloses a protection and distortion control method and system during sound operation, and relates to the technical field of audio processing. An audio signal and a reference signal are acquired; the reference signal is preprocessed to obtain a trigger signal of a level effective value; a trigger threshold is acquired according to the trigger signal of the level effective value; the trigger threshold is adjusted to obtain a preset trigger threshold; the preset trigger threshold is dynamically adjusted according to a voltage value corresponding to a frequency of the audio signal to obtain a voltage value corresponding to the preset trigger threshold; and the audio frequency corresponding to the voltage value corresponding to the preset trigger threshold is a protected and distortion-controlled audio signal. The application realizes dynamic change of a high-frequency cutoff frequency of an audio high-frequency unit while maintaining the loudness of a sound field restoration of a sound system, and improves the protection and distortion control accuracy of the sound in a limit operation state of high power and long time.

The application provides a high-strength rare earth magnesium alloy based on a room-temperature rotary swaging composite process and a preparation method thereof.The method comprises the following specific steps: according to designed components, raw materials are smelted to obtain a semi-continuous casting ingot, the rare earth magnesium alloy ingot is subjected to homogenization treatment, then is preheated and kept warm to be subjected to differential temperature extrusion, the extruded rare earth magnesium alloy is subjected to multi-pass rotary swaging treatment with a small deformation at room temperature, and finally is subjected to artificial aging treatment.Through the composite process with the room-temperature rotary swaging, the grains can be refined, the texture can be improved, and a large number of dislocations and twins can be introduced into the grains, so that the nucleation sites and precipitation power of precipitated phases in the aging process are improved, the aging strengthening capacity is more excellent, and the high-strength rare earth magnesium alloy is obtained.The application of the light-weight high-strength rare earth magnesium alloy in the fields of aerospace, rail transportation and automobiles can be accelerated.

The utility model relates to a hollow plate hot mark pressing device which is suitable for the field of hollow plate processing. The device comprises a support, two hot-pressing rollers rotating relatively are arranged on the support, a plurality of protruding annular hot-pressing teeth are evenly distributed on the hot-pressing rollers in the radial direction, a hot-pressing mark channel is formed, a motor drives a chain to conduct transmission, continuous machining of the hollow plate is achieved, and efficiency is improved. The hot-pressing roller is hollow to form a heat-conducting oil cavity, the hollow rotating shaft serves as an oil inlet and outlet channel, heat-conducting oil is circularly heated under the action of the conveying pump, the temperature is maintained at 180-220 DEG C, and it is ensured that the indentation quality is stable. A protective shell is arranged at the top of the device, and a feeding port and a discharging port are provided with height-adjustable L-shaped pressing plates, so that the device is suitable for plates with different thicknesses. According to the device, by optimizing the structural design, efficient and accurate hot-pressing mark machining is achieved, the machining quality of the hollow plate is remarkably improved, the service life of the hollow plate is remarkably prolonged, the production cost is reduced, and good market application prospects are achieved.

The present application relates to the technical field of binder, especially to a binder suitable for refractory material and its preparation process and application. The binder suitable for refractory material is prepared from the following raw materials in parts by weight: 30-40 parts of dispersible sulfonated starch ether, 20-30 parts of naphthalene sulfonate sodium formaldehyde condensate, 3-5 parts of hydroxypropyl methyl cellulose, 5-10 parts of sodium bentonite, 3-5 parts of fumed silica and 1-3 parts of polyvinyl alcohol. The main raw material of the binder of the present application is also added with dispersible sulfonated starch ether prepared from the following raw materials and preparation process. When the dispersible sulfonated starch ether is used together with the above-mentioned raw materials, firstly, the strength of the refractory material product can be improved; secondly, when the binder is added to the refractory material for molding, the cracking of thick-gauge refractory material during drying or sintering can be avoided, and the refractory material product prepared has fewer cracks at the edges and corners.

The utility model is suitable for photovoltaic technical field provides a kind of battery component and photovoltaic system, battery component includes: several cell strings, cell string includes the several cell piece connected in series by welding band, and the several cell piece includes the first cell piece located at the end of cell string, the second cell piece adjacent to first cell piece;Busbar is set on the back of second cell piece;Along first direction, second cell piece includes oppositely arranged first edge and second edge, and second edge is set away from first cell piece compared with first edge, and the back of second cell piece is provided with several thin grids;The distance of busbar to first edge is d1, and 0.1mm The utility model discloses a battery component can reduce the risk of cell piece hidden crack and crack in lamination process, and can reduce short-circuit risk, to improve battery component production yield.

This invention relates to a method for preparing high-performance aluminum alloy radiator plates. The method involves controlling the iron-silicon ratio of the main impurity component in the melt to be no less than 1.9 to reduce internal cracks in the cast billet and decrease the machining deformation rate of the finished product. This is achieved by adding aluminum-titanium alloy and a grain refiner in the furnace and online runner, while ensuring that the titanium content in the aluminum alloy ingot is maintained within a reasonable range, resulting in an ingot grain size ≤1. This improves the mechanical properties, uniform microstructure, and refined grains of the aluminum alloy radiator plate. Simultaneously, a small amount of copper is added, and the final rolling temperature is controlled at 330-360℃, resulting in fully recrystallized grains within the aluminum alloy plate. This improves the strength of the aluminum alloy radiator plate while eliminating anisotropy in its internal mechanical properties and reducing internal stress, ultimately yielding a high-performance aluminum alloy radiator plate.

The application discloses a dam foundation anti-seepage wall of a plain reservoir surrounding dam, which comprises a concrete outer layer, the inside of the concrete outer layer is sequentially provided with an adsorption layer, a water-resisting layer and a solid layer from right to left; the adsorption layer comprises a plurality of first sandstones and concrete, the plurality of first sandstones are longitudinally distributed on a plurality of longitudinal planes in the inside of the concrete outer layer, and the outer surfaces of the first sandstones are wrapped with water-absorbing layers; the water-resisting layer comprises a water-resisting film, the water-resisting film divides the inside of the concrete outer layer into two areas; the solid layer comprises a plurality of second sandstones and concrete, and the plurality of second sandstones are accumulated and distributed in the inside of the concrete outer layer; and the size of the first sandstone is smaller than that of the second sandstone. The waterproof layer, the adsorption layer, the water-resisting layer and the solid layer are embedded in the anti-seepage wall in multiple layers, so that the dam foundation anti-seepage wall is applicable to different complex strata and has self-protection durability in long-term use.

The application provides a secure encryption method, device, system, equipment and medium for vehicle information, comprising: obtaining first feature information of a smart terminal and second feature information of a vehicle terminal after establishing communication with the smart terminal; determining the communication state of the vehicle terminal and the smart terminal, and constructing an encryption key according to the communication state and the characters of the first feature information and the second feature information; calling the encryption key to encrypt the interactive vehicle information to obtain encrypted information. The application can construct a specific encryption key for each smart terminal based on the feature information of the vehicle terminal and the smart terminal, and can encrypt by using the specific encryption key, so as to reduce the risk of information cracking or leakage, improve the security and privacy of information, and ensure information security. Meanwhile, the control safety of the vehicle terminal can also be improved by interacting with the encrypted information, and the driving risk of the user is reduced.

The application discloses a kind of TGV glass substrate processing equipment and processing method, the TGV glass substrate processing method is, preheating is carried out to the point to be punched before punching, so that the temperature of the point to be processed and surrounding area is increased to form preheating zone, preheating can make the local temperature of glass substrate more uniform, so that when punching, the heat applied by laser cutting is not easy to cause sharp temperature difference, thereby effectively reducing the thermal stress generated in the material, and then eliminating or reducing the occurrence of crack or rough surface condition;The TGV glass substrate processing equipment is connected by the light path of cutting head and preheating head, and the laser beam of cutting head is partially reflected into the preheating head by the beam splitter, so that punching of glass substrate and preheating of the next processing point are carried out at the same time, which saves the processing time of glass substrate.

The invention discloses a ternary material precursor, a ternary material and a preparation method, and belongs to the field of lithium ion battery positive electrode materials. The ternary material precursor is of a multi-layer composite structure and sequentially comprises a core layer, a first transition layer and a second transition layer from inside to outside, and all the layers are prepared by adopting the same ternary (nickel-cobalt-aluminum) system. Through reasonable design of the proportion and thickness of the ternary system of the core layer and the transition layer, the ternary material precursor gives consideration to the high-capacity characteristic of the high-nickel core and the stability of the shell, and the stable structure of the shell can effectively inhibit the structural change and interface side reaction of the high-nickel material in the charging and discharging process. The phenomena of particle cracking and shell layer falling are reduced, and the material shows excellent specific discharge capacity, good cycle performance and thermal stability when being used as a lithium ion battery positive electrode material.

The utility model relates to the technical field of jacking devices, in particular to a bridge support replacement jacking device which comprises a hydraulic column and a hydraulic jacking cylinder. And two groups of hydraulic jacking cylinders are mounted on the outer side of the hydraulic column. The two sets of hydraulic jacking cylinders are connected with the top plate to assist the hydraulic columns for supporting, so that the bearing capacity of the hydraulic columns can adapt to actual loads of different bridges, sufficient supporting force is provided, it is ensured that the hydraulic columns can safely support the upper structures of the bridges, and the load requirements of different bridges are met; load can be dispersed, overload of a single hydraulic cylinder is avoided, additional lateral support is provided for the hydraulic cylinders, the hydraulic cylinders are prevented from overturning in the jacking process, the risk of equipment damage is reduced, the two sets of hydraulic jacking cylinders are used for assisting in supporting, the load is effectively dispersed, local stress concentration is reduced, and the reliability of equipment is improved. And the risk that the bridge structure cracks or deforms in the jacking process is reduced, and the overall safety is improved.

This application provides an electrochemical device comprising a negative electrode and an electrolyte. The negative electrode includes a negative current collector and a negative active material layer disposed on the negative current collector. The negative active material layer comprises a negative active material. The negative active material contains a silicon-based active material, and the mass percentage of the silicon-based active material in the negative active material is X%. The electrolyte contains metal ions, and based on the mass of the electrolyte, the mass percentage of the metal ions is A ppm, where X and A satisfy the relationship: 0 < X / A ≤ 8. During the charging process of the electrochemical device, the metal ions can undergo a reduction reaction at the negative electrode and form a stable Si-metal binary alloy phase or Si-O-metal ternary alloy phase with the silicon element in the silicon-based active material. This effectively suppresses the lithium intercalation expansion of the silicon-based active material, reduces electrolyte consumption, and effectively improves the cycle performance of the electrochemical device.

The utility model relates to related technical field of PE pipe production equipment, concretely to a kind of PE pipe section cutting fixing device, it include: machine case;The top of the machine case is provided with pipe body, the bottom of the pipe body both sides is uniformly provided with transmission roller, the centre of the transmission roller is fixedly connected with first rotation axis. The utility model can control PE pipe to rotate at uniform speed while cutting PE pipe by the cooperation of machine case, pipe body, transmission roller, first rotation axis, fixed block, portal frame, transmission mechanism and cutting mechanism, so that PE pipe material is uniformly stressed, unilateral stress concentration is avoided, burr, crack or deformation is reduced, the existing PE pipe section cutting fixing device can be fixed and cut PE pipe, but PE pipe cannot be controlled to rotate while cutting, leading to uneven stress of PE pipe, unilateral stress concentration, leading to not only more burr at PE pipe cutting place, but also prone to crack or deformation.

The utility model discloses a cell storage transfer box, which relates to the technical field of transfer boxes, and comprises a transfer box body, a sliding chute is arranged in the transfer box body, a screw rod is arranged in the sliding chute, and a driving component is arranged on one side of the transfer box body. By the adoption of the structure, the driving assembly is installed on the transfer box body and used for driving the lead screw to rotate in the sliding groove, so that the screw block on the surface of the lead screw is driven to move in the sliding groove, the screw block drives the movable plate to move, the movable plate drives the pipe frame to move, and the pipe frame can stretch out of the transfer box body; a worker can take out or place the tube rack and the test tube more easily and quickly without performing complex actions in a narrow space, so that the smoothness of the whole operation is improved, the occurrence of unforeseen circumstances such as test tube rupture, cell sample pollution or damage and the like caused by misoperation is reduced, and the working efficiency is improved. Therefore, precious cell samples are protected from being damaged.

The utility model discloses building wall structure of reducing engineering cost belongs to building wall field. Building wall structure of reducing engineering cost, include: wall body still include: a plurality of slot, open in wall body's lower extreme, bottom plate, set up wall body's downside, a plurality of limit tube, fixedly set up on bottom plate, with slot correspond, the utility model discloses need not when installing wall body to correct hole to each reinforcing bar, can reduce manpower input to a certain extent, and then effectively reduce installation cost.

The utility model relates to a self-adaptive cathode conductive roller, and relates to the field of solar cell electroplating. According to the technical scheme, the device comprises an axis part which comprises an axis; the conductive sleeve part is located on the outer side of the axis part and comprises an axis ring arranged on the periphery of the axis in a sleeving mode and a conductive outer sleeve located on the outer side of the axis ring. Wherein the conductive outer sleeve is elastically connected with the axis ring through an elastic piece. Under the condition, the self-adaptive cathode conductive roller is dynamically and tightly attached to the upper surface of the solar cell silicon wafer through the gravity self-adaptive structure, so that the contact resistance of the self-adaptive cathode conductive roller and the solar cell silicon wafer is remarkably reduced, and the current conduction stability is improved; the problem of uneven coating thickness caused by poor contact in the traditional electroplating process is fundamentally solved, the mechanical stress concentration is effectively avoided, the hidden crack and fragment risk of the solar cell silicon wafer is greatly reduced, and the collaborative improvement of the electroplating efficiency, quality and cost control is realized.

The utility model discloses a reinforced earth retaining wall concrete faceplate structure relates to retaining wall technical field, including the basement with the capstone of being located above, a plurality of modules are spliced between the basement and capstone, and the adjacent two modules are stacked to form the faceplate unit. The utility model discloses through the slope orientation automatic correction horizontal deviation, makes the module quick fall into the design position, can complete the installation in the process of splicing, improves the accuracy of positioning between faceplate unit, through the quantity of module can be adjusted the height of retaining wall flexibly, simultaneously, the mutual superposition of multiple modules can accurately control the slope of retaining wall, need not rely on artificial line leveling or formwork support, make the integrity of concrete surface layer high and more beautiful, and the slope ratio self -stabilizing design makes the faceplate natural inclination, and the stress direction of reinforced earth body is more suitable, can reduce the earth pressure concentration of faceplate back, reduces the structure overturning risk.

The invention discloses a partition induction regulation and control device and method for high-strength steel laser cladding. The partition induction regulation and control device comprises a welding mechanical arm, a laser head, a shielding gas assembly, a magnetic induction coil, an infrared thermometer and a control system. The laser head is clamped at the tail end of the welding mechanical arm; the nozzle is connected with the laser head; the plurality of groups of magnetic induction coils are relatively independent, are arranged on the laser head through a coil bracket, and are used for performing zoned temperature control on a cladding area; the infrared thermometer is arranged on the coil bracket and is used for measuring the temperature of a cladding area; the laser head, the welding mechanical arm, the shielding gas assembly, the magnetic induction coil and the infrared thermometer are all connected with the control system. According to the zoning induction regulation and control device, zoning temperature control is conducted on a cladding area, precise regulation of local temperature is achieved, infrared temperature measurement real-time feedback and closed-loop control are combined, the uniformity and metallurgical bonding strength of a cladding layer can be remarkably improved, and cracks and defects are reduced.