765 results about "Smooth surface" patented technology

This invention discloses a rapid modeling method for large-size composite structures with variable thickness solid meshes based on a yarn model, belonging to the field of finite element modeling of fiber-reinforced composite materials. Its core process includes: for a large-size component S to be analyzed, generating yarn models for each ply partition using composite material design software and batch-dividing triangular meshes; similarly, extracting smooth surface profiles from the three-dimensional geometry of the overall component S and generating a structured shell mesh as the base carrier; then, using a voxel hash-accelerated spatial Boolean intersection algorithm to automatically identify the element sets of each ply partition between each yarn mesh and the overall shell mesh, generating a stepped solid mesh through normal offset, ensuring interface compatibility through node merging, and finally assigning material properties and generating an analysis model that can be directly submitted for solution. This invention significantly reduces manual workload and error risk, providing an efficient and reliable preprocessing solution for the curing deformation and strength analysis of composite material structures.

The invention discloses a multi-view three-dimensional reconstruction method for a slender object based on curve guidance. According to the method, geometric prior and a deep learning segmentation network are fused, two-stage foreground extraction, a curve-guided motion recovery structure (SfM) and a surface optimization module capable of differential Poisson reconstruction are provided, and a set of complete processing flow is established for the problem that a slender and weak-texture object is difficult to accurately reconstruct. The method comprises the following steps: acquiring a multi-view image through a consumer-level terminal and performing frame extraction to obtain an input data set; generating a high-quality foreground mask by utilizing depth estimation and semantic segmentation; performing curve-guided SfM initialization based on the foreground skeleton curve to realize joint estimation of the camera pose and the sparse three-dimensional curve; carrying out surface geometric optimization through a micro Poisson equation and differentiable grid rendering; and designing a multi-branch loss function fusing luminosity, mask, regularization and Gaussian rendering supervision to train the model. Finally, the method can output a three-dimensional reconstruction result of the slender structure with high geometric accuracy, strong structural integrity and smooth surface, and has good robustness and application value.

The invention discloses a perovskite thin film, a photoelectric device and a method for improving the surface quality of the perovskite thin film. The method for improving the surface quality of the perovskite thin film comprises the following steps: S1, preparing the perovskite thin film; s2, performing picosecond pulse laser surface polishing treatment; and S3, guanidine ion implantation and repair: applying a guanidine salt solution to the surface of the perovskite thin film, removing the redundant guanidine salt solution on the surface of the perovskite thin film after the guanidine ions are implanted into the surface of the perovskite thin film, and then carrying out annealing treatment. According to the method, the surface of the perovskite thin film is polished through the picosecond pulse laser, the roughness of the surface of the perovskite is effectively reduced, a surface layer rich in defects is removed, guanidine ions are selectively implanted again through a multi-A-site vacancy structure formed on the surface of the perovskite thin film subjected to laser polishing, multiple hydrogen bonds are formed through the guanidine ions and a perovskite framework, and the surface roughness of the perovskite thin film is effectively reduced. And deep and stable defect passivation and lattice strengthening are realized, and the high-quality perovskite thin film with smooth surface, low defect density and high stability is obtained.

The invention discloses a punching-free installation attendance machine, and belongs to the technical field of attendance machines, the punching-free installation attendance machine comprises a preassembled plate fixedly installed on the outer side of a smooth preset surface, a machine body is installed on the preassembled plate through a lifting assembly, and a detection module for monitoring the body type and position of a user is installed on the machine body; an adsorption assembly used for being adsorbed to the smooth surface is arranged at the center position of the pre-assembling plate, flexible adhesive patches bonded to the smooth surface are further evenly embedded and fixedly installed on the back face of the pre-assembling plate, an air blowing pipe is further installed on the adsorption assembly, a fixing base is fixedly installed on the back face of the machine body, and an air conveying assembly is arranged on the inner side of the fixing base. According to the attendance machine without punching installation, multi-mode matched positioning is adopted, the adsorption structure can be automatically adjusted in the follow-up using process, the adsorption stability is ensured, automatic cleaning of a working area can be achieved in the position height adjusting process, and the punching recognition precision is ensured.

The invention discloses a PBO fiber reinforced bulletproof helmet and a preparation method thereof. The PBO fiber reinforced bulletproof helmet is provided with a shell, the shell comprises a resin matrix and reinforcing material layers, the reinforcing material layers are distributed in the resin matrix, and the adjacent reinforcing material layers are fixedly combined through the resin matrix; the reinforcing material layer comprises PBO fibers. According to the bulletproof helmet, the PBO fiber is adopted as a reinforcement body to prepare the bulletproof helmet for the first time, and the problems that an existing aramid fiber helmet is poor in bulletproof performance and an ultra-high molecular weight polyethylene helmet is poor in stability are solved; according to the preparation method provided by the invention, the hot pressing process is optimized, so that the problem of deviation caused by smooth surface of the PBO fiber and poor bonding property with the resin is avoided, and the PBO fiber reinforced bulletproof helmet with stable shape and excellent performance is prepared.

The invention relates to a silicon nitride crystal based on high static nitrogen pressure and active nitrogen regulation and a growth method thereof. The silicon nitride crystal is prepared by the growth method, and the method adopts a physical gas phase transmission process and specifically comprises the following steps: introducing high static pressure nitrogen (1-3 bar) and trace NH3 / N2 mixed gas into source powder formed by mixing high-purity beta-Si3N4 and polycrystalline silicon, and dynamically maintaining the gas phase N / Si molar ratio to be (1.33 + / -0.1): 1, thereby inhibiting the decomposition of the source powder and stabilizing the crystal growth; carrying out spray granulation on the source powder, carrying out compression molding, placing the obtained product in a graphite crucible with the inner wall coated with TaC, and carrying out ordered epitaxial growth by controlling the temperature difference of a temperature zone at 1800-2000 DEG C and the axial temperature gradient; according to the method, the dislocation density and the carbon impurity content of the silicon nitride crystal can be remarkably reduced, then the high-purity silicon nitride crystal with a complete structure and a smooth surface is obtained, and the method is suitable for the fields of high-temperature electronic devices and deep ultraviolet light electronics.

The invention provides an LTCC raw material belt with a high thermal expansion coefficient, an LTCC substrate and a preparation method of the LTCC substrate, the LTCC raw material belt with a smooth surface and a uniform thickness is obtained through tape casting by adjusting the proportion of silicon dioxide ceramic powder, MgTiO3 ceramic, SrTiO3 ceramic, Li2MgSiO4 ceramic, BCBS, ZABS and LASP microcrystalline glass powder, the LTCC raw material belt is sintered in a nitrogen furnace at 880-940 DEG C for 1-3 h, and the LTCC raw material belt can be co-fired with low-cost copper electrode slurry to be flat and tightly attached to the low-cost copper electrode slurry. The LTCC substrate with the thermal expansion coefficient larger than 11 ppm / DEG C is prepared, under the test frequency of 5 GHz, the dielectric constant of the LTCC substrate ranges from 5.1 to 6.1, the dielectric loss ranges from 0.0025 to 0.004, the bending strength ranges from 170 MPa to 230 MPa, the thermal expansion coefficient at the temperature ranging from 30 DEG C to 400 DEG C ranges from 11.0 ppm / DEG C to 13.0 ppm / DEG C, and acid resistance is good.

The invention provides an alumina refractory material for a gas turbine lining, which comprises the following main raw materials in parts by mass: 14.9-15 parts of sintered mullite, 76.8-77.3 parts of tabular corundum and 3.6 parts of alpha-alumina powder; and the auxiliary materials comprise the following raw materials in percentage by weight relative to the main raw materials: 0.2% of sodium tripolyphosphate, less than or equal to 0.7% of mullite fiber, 3% of silica fume and 1% of magnesium oxide. According to the invention, the smooth-surface alumina refractory material product for the gas turbine lining is obtained through casting molding, room-temperature curing, drying and sintering. Through detection, the compressive strength of the refractory material reaches 237.21 MPa, the bending strength reaches 40.12 MPa, and the refractory material has a good application prospect when being used as a lining material of an internal combustion engine.

The utility model discloses a meshing type load chain structure and a chain group thereof. The chain structure comprises a first chain A and a second chain B which are oppositely arranged, the first chain A and the second chain B are each formed by connecting a plurality of chain links with two or more inner chain pieces and outer chain pieces in series, wherein the outer chain pieces are connected with the chain links in an end-to-end alternating mode through pin shafts. The inner chain pieces and the outer chain pieces are the same in shape and structure and are in axial symmetry. Each inner chain sheet of the first chain A and the inner chain sheet of the second chain B are oppositely and correspondingly arranged and are meshed with each other; each outer chain sheet of the first chain sheet A and the outer chain sheet of the second chain B are oppositely and correspondingly arranged and are meshed with each other; and the opposite surfaces of the inner chain sheets and the outer chain sheets are parallel and continuous smooth curved surfaces. By the adoption of the chain structure and the chain set, the load generated when the chain structure is used for conducting linear reciprocating transmission in a limited space can be effectively increased, and the mechanical noise problem generated when the chain structure and the chain set are in the working state is remarkably reduced.

The invention discloses pretreatment processing equipment for roadbed concrete regeneration, and belongs to the technical field of crushing devices.The pretreatment processing equipment comprises a secondary support assembly, a bottom bearing assembly is located at the bottom of a treatment bottom groove, a dust removal assembly is located in the center of the bottom of the treatment bottom groove, and the top of the treatment bottom groove is connected with a power output assembly through the secondary support assembly; a surrounding assembly is arranged on the inner wall of the treatment bottom groove, and a particle shifting base is fixed to the side face of the surrounding assembly. Through the arrangement of the surrounding extrusion roller, the planetary surrounding assembly is matched with the deviation shaft rod to enable the surrounding extrusion roller to rotate around the inner wall of the treatment bottom groove and complete the jaw closing action at the same time, materials sent out in the material feeding groove are crushed, and aggregate is rapidly separated through the cooperation of the aggregate stripping table in the process that the surrounding extrusion roller rotates around the treatment bottom groove; therefore, the smooth surface of the separated aggregate is ensured, and the generation of aggregate cracks can be reduced through the friction between the materials.

The present application relates to the technical field of cable manufacturing, in particular to an extrusion molding equipment for cable insulation sheath, which comprises an extrusion device including an extrusion head and a rotating assembly. By uniformly arranging multiple convex surfaces on the outer wall of the extrusion head in the circumferential direction, the radial distribution of the molten material in the flow channel is adjusted, and the molten material is guided to supplement the inter-strand gap of the multi-strand twisted cable. At the same time, the extrusion head is driven to rotate by the rotating assembly, so that the convex surface can adapt to the cable outer surface profile in real time. Therefore, the uniform thickness and smooth surface of the insulation layer are ensured, and the phenomenon of excessive collection or uneven distribution of materials to the gap is avoided, which not only eliminates the electrical hazards in the excessively thin area, but also reduces the material waste in the excessively thick area, thereby improving the insulation performance of the cable and the material utilization rate.

The invention discloses a solid oxide fuel cell electrolyte thin film and a preparation method thereof, the electrolyte thin film sequentially comprising a transition layer, a self-repairing layer and a compact layer is formed on the surface of one side of a substrate, the transition layer is made into a film through a solid-liquid phase forming process, and first sintering is carried out to obtain the solid oxide fuel cell electrolyte thin film, the self-repairing layer and the compact layer are obtained through the vacuum sputtering coating process at the room temperature, and the compact and thin electrolyte film is obtained at the low preparation temperature, so that the energy consumption cost can be reduced, and commercialized application is facilitated. According to the preparation method, relatively good film-substrate binding force and film compactness can be realized, pores and cracks are not easy to generate under extreme conditions, and the prepared electrolyte film is relatively flat in surface and can realize relatively good interface contact.

The utility model relates to the technical field of crawler belts, in particular to a crawler belt suitable for smooth surface operation, which comprises an annular bottom belt, and the surface of the inner wall of the annular bottom belt is provided with a clamping assembly used for being assembled with a walking wheel in a matched mode. A plurality of buffer pieces are fixed on the surface of the outer wall of the annular bottom belt; and anti-skid pieces are fixed to the outer side surfaces of the multiple buffer pieces correspondingly. According to the arrangement, the multiple buffering pieces are fixed to the surface of the outer wall of the annular bottom belt, impact on the surface of an object can be reduced in the running process, crawling noise and vibration are reduced, the anti-skid pieces are fixed to the surfaces of the outer sides of the buffering pieces, the friction force between the anti-skid pieces and the ground can be increased, and walking on the smooth surface of the object is achieved; therefore, the device is suitable for a complex terrain environment.

The invention provides a method for enabling an optical fiber module interface radiator to be closely attached to an indium heat-conducting sheet. The method comprises the steps that the surface of a nickel-plated layer of the interface radiator is polished to form a rough surface; preliminarily forming an indium heat-conducting sheet on the rough surface; then the workpiece is placed on a jig platform, and a mirror surface roller is arranged on the jig platform; providing a PET (Polyethylene Terephthalate) sheet which is positioned between the surface of the indium heat-conducting sheet and the mirror roller; the method comprises the following steps: pressing an indium heat-conducting sheet into a roller under the roller pressure of 40-110kgf, riveting the bottom of the indium heat-conducting sheet into a rough surface which is tightly combined with the interface radiator, so that a gap and air do not exist on the combined surface, and the top surface of the indium heat-conducting sheet is a flat smooth surface, is attached to the surface of the interface radiator and is tightly combined and molded into an indium heat-conducting thin layer; the surface of the indium heat conduction thin layer is coated with an anti-oxidation coating with the thickness of 1-5 microns; therefore, the indium heat-conducting material can be tightly adhered to the surface of the interface radiator without an adhesive, the interface radiator has excellent drawing resistance and friction resistance, and the influence of thermal resistance caused by air and the adhesive is reduced.

The present application relates to the field of plate processing device, specifically to a flexible finishing mechanism, by setting the first and second side of the mold body as a smooth surface, used to guide the smooth entry of the plate, avoiding the sharp collision of the traditional disc mold, solving the problem of easy to produce wave under high speed. By setting the first and second torsional spring, used to provide continuous elastic buffer force, compared with linear spring, torsional spring is not easy to fatigue relaxation under long-term alternating load and easy to adjust the preload, solving the problem of unstable processing effect caused by the performance decline of traditional spring. By setting the first bearing, used to change the sliding friction between the first mold body and the plate into rolling friction, by setting the second bearing, used to change the sliding friction between the second mold body and the plate into rolling friction. At least solve one or more of the deficiencies of the existing finishing mechanism in high speed adaptability, adjustment convenience and long-term stability.

The invention relates to the technical field of surface treatment, and discloses a PVD (Physical Vapor Deposition) treatment method for sawteeth. Comprising the following steps: carrying out alkaline electrolytic polishing treatment to obtain a flat surface, carrying out phosphating treatment after pickling neutralization to form a chemical conversion film, depositing a hard functional layer through PVD plating, carrying out surface cleaning and pretreatment to obtain a clean substrate, coating a heat-resistant base coat with a polymer to form a heat-resistant hard bottom layer, coating a wear-resistant surface coat with a polymer to form a wear-resistant protective layer, and curing to form a film to form an integrated structure. Through the synergistic effect of the five-layer composite protection structure, the sawtooth groove protection blind area is eliminated, the coating quality consistency is remarkably improved, the corrosion resistance time exceeds 2000 hours, the high-temperature softening limit is broken through, 100-180 DEG C stable work is achieved, the wear resistance is improved by one order of magnitude, meanwhile, functionality and durability are considered, and the service life is prolonged. And an effective technical solution is provided for long-term reliable application of the sawtooth workpiece under harsh working conditions.

The application discloses a pressing device for polaroid processing, which comprises an operation platform, a supporting frame arranged on the operation platform, and a negative pressure adsorption fixing assembly arranged on the lower side of the polaroid. The lower surface of the polaroid is adsorbed and cleaned by the negative pressure adsorption fixing assembly, so that the polaroid is fixed in a mold positioning piece. When the polaroid on the pull plate is slid along a sliding path and arranged in a pull groove, a liquid crystal glass upper surface cleaning assembly arranged on the sliding path is used to clean the upper surface of the liquid crystal glass. The liquid crystal glass upper surface cleaning assembly comprises a glue sticking piece arranged on the upper side of the liquid crystal glass, a smooth surface and a sticking surface are arranged on the glue sticking piece, and the sticking surface faces the upper surface of the liquid crystal glass. When the polaroid is conveyed to the lower side of the glue sticking piece, a pressing assembly arranged on the operation platform is used to press the glue sticking piece, so that the sticking surface is in contact with the upper surface of the liquid crystal glass, and the fingerprints and dust on the liquid crystal glass are cleaned. The application has the effect of dust-free pressing of the polaroid.

The utility model belongs to the field of PET foaming sheet production equipment, and particularly relates to a PET foaming sheet secondary foaming device which comprises a frame body and a traction system, a first support, a second support, a third support and a fourth support are sequentially and fixedly connected to the frame body from left to right, a first upper heating roller and a first lower heating roller are rotatably connected to the first support, and a second upper heating roller and a second lower heating roller are rotatably connected to the fourth support. A second upper heating roller and a second lower heating roller are rotationally connected to the second support, a third upper heating roller and a third lower heating roller are rotationally connected to the third support, and an upper cooling roller and a lower cooling roller are rotationally connected to the fourth support. The first upper heating roller, the first lower heating roller, the second upper heating roller, the second lower heating roller, the third upper heating roller, the third lower heating roller and the lower cooling roller are all connected with a traction system. According to the secondary foaming device for the PET foamed sheet, secondary foaming can be carried out on the PET foamed sheet, so that a thicker sheet product with a smooth surface is obtained, and the production requirement is effectively met.

The utility model discloses an automobile single-light lens module not prone to fogging, which comprises an end cover and a lens arranged in the end cover, the end cover is detachably connected with a lens support, a sealing gasket and a sealing surface are arranged in the end cover, the lens is tightly pressed on the sealing gasket and the sealing surface, the lens support is connected with a positioning mechanism used for positioning the end cover, and the lens support is connected with the end cover. The positioning mechanism comprises a positioning column, a smooth surface, a pushing block, a rectangular hole, a guide groove and a spring, the guide groove and the rectangular hole are formed in the lens support, the guide groove is used for guiding the positioning column, the smooth surface is arranged at the end of the positioning column, the spring is located in the guide groove, and the two ends of the spring are connected with the positioning column and the lens support; and the pushing block is used for driving the positioning column to reciprocate. According to the utility model, the lens can be conveniently positioned and fixed, the installation stability of the lens is improved, the sealing gasket and the sealing surface are matched for use, a dual-sealing effect is achieved, moisture is effectively prevented from entering, and a good anti-fog effect is achieved.

The invention discloses a solar photovoltaic anti-skid floor tile which comprises a plurality of anti-skid photovoltaic power generation floor tiles with different areas and the same structure, a mounting guide rail used for assembling and combining the multiple anti-skid photovoltaic power generation floor tiles and LED lamp strips assembled between gaps of the anti-skid photovoltaic power generation floor tiles. Through the micro-bump anti-skid structure on the surface of the tempered glass panel, the wet friction coefficient is increased while the low dust adhesion characteristic of a smooth surface is kept, and the anti-skid requirement is met. By adopting the back wiring battery technology, the electrode grid lines are hidden on the back surface of the battery piece, so that the surface of the floor tile presents a pure black grain-free integrated visual effect, and the anti-shielding performance is excellent. The bottom supporting plate adopts a lightweight composite material or aluminum alloy combined with a honeycomb mould pressing SMC forming process, the weight of a single floor tile is greatly reduced compared with that of a traditional scheme, and in cooperation with the design of heat dissipation holes of an inner cavity of a honeycomb structure, the floor tile has the strict requirements for high-strength bearing force and supporting of various environments, the service life is further prolonged, and the floor tile is suitable for popularization and application. And the materials can be completely recycled.

The utility model provides a kind of waterproof rubber parts of engineering truck wire harness connector, comprising: fixed wire harness part, spiral pipe diameter and connector protection part, the spiral pipe diameter is connected in one end of the fixed wire harness part, and the connector protection part is connected in one end of the spiral pipe diameter.The utility model provides a kind of waterproof rubber parts of engineering truck wire harness connector, using fixed wire harness part, spiral pipe diameter and connector protection part adopt ternary ethylene-propylene material, its stable molecular structure and smooth surface make water molecule difficult to invade and adhere, from material essence, guarantee waterproof effect, tightly adhere connector appearance design, effectively avoid water, greatly enhance the waterproof ability of connector and its to the matching end, reduce the electrical failure risk caused by water.

The invention provides a bamboo pole pencil board and a preparation method and application thereof, and the preparation method comprises the following steps: sequentially performing dry carbonization softening and wet flattening on raw materials, and then performing wax dipping to obtain the bamboo pole pencil board, the raw materials comprise flattening plates or splice plates. The bamboo rod pencil board is high in strength, good in size stability, free of warping, smooth in surface, good in pencil point forming, close to a poplar pencil board in coiling and cutting performance, environmentally friendly and safe in preparation process, free of harmful substances such as formaldehyde and the like, capable of meeting the safety requirement and capable of meeting the requirements of student supplies and office supplies.

The utility model relates to a swing frame mechanism for processing the R round edge of the back of plate material, including mechanism support, plate material work piece, crank mechanism device, connecting rod mechanism device, swing mechanism device and swing adjustment distance mechanism, swing mechanism device includes swing mechanism, swing frame, grinding head wheel device, when using, the grinding head wheel device is placed on swing case cross arm support top, and the plate material work piece being processed is set in smooth surface horizontal downward, back upward, and is set into swing center point close to the back of plate material work piece one side, namely the R round edge movement of the back of plate material work piece, the swing frame drives the grinding wheel to make the circumferential swing along the swing heart point in the case, and the R circle center point of plate material work piece and swing heart point are adjusted to coincide, so when the swing frame drives the grinding wheel to swing, the grinding wheel will grind and polish the two sides of plate material into the standard R round edge, thereby, the surface of the R round edge of the plate material work piece being processed forms the clear profile arc.

Provided is a polyethylene powder that completes swelling in a short time, offers a uniform appearance or shape of a molded article, and produces a molded article with smooth surface even by high-speed molding.The polyethylene powder satisfies (requirements 1 and 2). (Requirement 1): an intrinsic viscosity (IV) is 1.5 dL / g or more and 34.0 dL / g or less, and (requirement 2): a ratio γ0 / γ1 of an elastic limit strain γ0 at a swelling time t (h) of 0 hours to an elastic limit strain γ1 at a swelling time t (h) of 1 hour is 0.80 or more and 0.95 or less, wherein the ratio is obtained from a strain dependence test.

To suppress the degradation of sealing property of a pressure vessel and the deterioration of a sealing member, and to reduce the workload and cost of manufacture, a blow molding device includes a pair of molds configured to be clamped to sandwich a parison from both lateral sides, and a blow pin configured to form a neck portion together with the molds. The blow pin includes a blow pin body portion having an outer circumferential surface of a shape corresponding to an inner circumferential surface of the neck portion, and a ring portion forming an annular recess portion between the blow pin body portion and the ring portion to form an outer circumferential surface of a tip portion of the neck portion, which is a smooth surface without any parting line.

The utility model relates to the technical field of protective films, and particularly discloses a protective film structure for cigarette holder packaging, which comprises a protective film body, one side of the protective film body is fixedly connected with a first sealing edge, the other side of the protective film body is fixedly connected with a second sealing edge, and a first rough part is arranged in the middle of the surface of the second sealing edge. A plurality of second rough parts are arranged on the surface of the first sealing edge, the second rough parts are evenly distributed at equal intervals, the distance between the second rough part located in the middle of the first sealing edge and the second rough parts on the two sides is 2 mm, the common length of the protective film body and the first sealing edge is 22 mm, and the lengths of the first sealing edge and the second sealing edges are both 10 mm. According to the utility model, the condition that a rough surface is in contact with a smooth surface is avoided when the whole protective film covers the cigarette filter tip and the circumference of the filter tip is at any numerical value of 22-24mm, so that the inevitability of frictional contact is ensured, and the firmness of adhesion of the protective film is further ensured.

The invention relates to a preparation method of a micro-nano wrinkled copper foil, which comprises the following steps: step 1: surface pretreatment, step 2: electrochemical polishing treatment, step 3: atmosphere controllable high-temperature annealing treatment, and finally obtaining a copper foil with a uniform micro-nano wrinkled structure. According to the invention, the copper foil with an atomic-scale smooth surface can be obtained; and a uniform and controllable micro-nano wrinkle structure is formed.

A three-dimensional (3D) printed object is described. The 3D printed object comprises a polymer. A surface of the 3D printed object comprises the polymer 5 and a UV absorbing colorant. The surface has a surface area roughness Sa (arithmetical mean height) of ≤5.0 μm. A method for preparing a three dimensional (3D) printed object having a smooth surface is also described.

The invention discloses a device for eliminating concrete surface pore defects, and relates to the technical field of concrete construction quality, the device comprises a roller storage unit, and a flexible scraper is wound on the outer side wall of the roller storage unit; the roller storage unit is connected with the input end of the rotary power unit; the rotary power unit is fixedly connected with the supporting and fixing frame through a flange; the roller storage unit is rotationally connected with the supporting and fixing frame through a bearing. According to the device for eliminating the pore defect on the surface of the concrete, the flexible scraping plate can be used in various special-shaped components, different lengths and widths can be adopted according to the template condition in the concrete engineering, and the requirements of different construction environments can be better met; furthermore, bubbles on the surface of the concrete are stripped from the concrete by virtue of through holes in the flexible scraper blade, and the surface of the concrete is flattened by virtue of a smooth surface on the flexible scraper blade, so that the surface of the concrete is smooth and flat after the mold is removed.