17results about How to "Avoid hollowing" patented technology

The utility model discloses an external reinforcing rib PVC electrical conduit, which comprises a core tube, a reinforcing outer tube is arranged on the surface of the core tube, external spiral reinforcing ribs are uniformly arranged on the surface of the reinforcing outer tube, the external spiral reinforcing ribs comprise thick spiral ribs and thin spiral ribs, and the thin spiral ribs are positioned between two adjacent thick spiral ribs; a flame-retardant inner pipe is arranged on the inner wall of the core pipe, and inner spiral reinforcing ribs are evenly arranged on the inner wall of the flame-retardant inner pipe. The reinforcing ribs of the three-dimensional structure are designed and are spiral, so that the axial structural strength is improved, the circumferential structural strength is also improved, and the compression resistance effect is improved; the outer spiral reinforcing rib comprises a thick spiral rib and a thin spiral rib, so that the surface area can be increased, the adhesive force with concrete is increased, and hollowing and cracking of the concrete are prevented; the friction resistance can be reduced by reducing the contact area between the internal spiral reinforcing ribs and the threading wire, the threading wire in the early stage and the threading wire in the later stage are convenient, the wiring difficulty is reduced, the flame retardant effect can be improved by arranging the ceramic coating, and the use is safer.

The application discloses a steel structure concrete composite structure and a construction method thereof. The construction method is that concrete mixed with shape memory alloy fiber aggregate is poured into a cavity of a steel structure to form the steel structure concrete composite structure. The application can improve the crack resistance and shrinkage resistance of the concrete structure, avoid crack generation and internal cavity hollow caused by concrete shrinkage, and thus improve the forming quality of the steel structure concrete composite structure and the overall bearing capacity and durability of the steel structure concrete composite structure.

The invention discloses an intelligent device for cement mortar shrinkage performance and a test method, the intelligent device comprises a shell, and further comprises a compression ring assembly used for preventing hollowing of a cement block, the compression ring assembly comprises a cylinder, push rings, a push rod and an eccentric wheel, the push rings are movably connected to the two ends of the cylinder, and the eccentric wheel is movably connected to the push rod; the two push rings are hinged to push rods through hinged supports on the push rings, the other ends of the two push rods are rotationally connected with the push rods through guide rods at the eccentric positions of eccentric wheels, the two eccentric wheels are rotationally connected to the two sides of a shell through short shafts at the axes of the eccentric wheels, the shell is connected with a limiting assembly, and the top end of the shell is connected with a clamping assembly. According to the invention, hollowing in the cement block can be effectively prevented when the cement block is manufactured.

The utility model provides a kind of pipe well, including two wallboards of mutual lap to enclose pipeline, two groups of support frame and the protective layer being arranged on the outer surface of wallboard by the fixed part connecting wall and wallboard, can improve the structural stability of pipe well, construction efficiency, sound insulation and waterproof thermal insulation.

The application discloses a spray pyrolysis device and a method for preparing ternary positive electrode precursors by using the same. The spray pyrolysis device comprises a feeding unit, a spraying unit and a pyrolysis unit; a first unit, a second unit and a third unit are sequentially arranged in a cavity of the spraying unit; an atomizing device is arranged at an outlet of the third unit; the first unit, the second unit and the third unit are heated by a first ultrasonic wave generating assembly, a second ultrasonic wave generating assembly and a third ultrasonic wave generating assembly respectively; the atomizing device is communicated with the pyrolysis unit, so that atomized liquid generated by the atomizing device enters the pyrolysis unit; a ignition device is arranged at an inlet of the pyrolysis unit; P1 < P2 < P3. The spray pyrolysis device can avoid the problems of particle breakage and hollowing of the positive electrode material precursor, so that the tap density of the positive electrode material precursor is high, the specific surface area is low, and the chlorine content is low, thereby improving the energy density, cycle performance and safety performance of the positive electrode material, and reducing the preparation cost.

A bath pedal convenient to install comprises a pedal body, and a containing area capable of containing a lifting rope is arranged at the bottom of the pedal body. A hollow pipe is installed at the bottom of the pedal body, and the interior of the hollow pipe is hollow to form a containing area. And the hollow pipe is fixed at the bottom of the pedal body through an adhesive. The bath pedal has the advantages that the containing area capable of containing the lifting rope is innovatively arranged at the bottom of the bath pedal body, and the core advantage of the structure is that an acting point is provided for the installation process. During installation, installation personnel can enable a lifting rope to penetrate through the hollow flat pipes arranged at the bottom of the pedal. Afterwards, the two persons can respectively pull the two ends of one lifting rope, and the whole bath pedal can be horizontally lifted easily and stably like a lifting handle. The problem that in the prior art, due to the fact that pedals are heavy and lack suitable grabbing points, force is difficult to apply especially in narrow spaces such as three faces leaning against the wall is thoroughly solved.

The application discloses a stainless steel and carbon steel composite pipe, which comprises a stainless steel pipe coaxially arranged at an outer layer and a carbon steel pipe at an inner layer, and the stainless steel pipe and the carbon steel pipe are filled and bonded through PE. The application also provides a ring expansion composite system and process, a stainless steel and carbon steel composite pipe, a clamping mechanism symmetrically arranged at two ends of the stainless steel pipe and the carbon steel pipe, a PE supply device for pressing flowy PE into an annular cavity between the stainless steel pipe and the carbon steel pipe through the clamping mechanism, and a heating and heat preserving device for heating and heat preserving the carbon steel pipe. The stainless steel and carbon steel composite pipe has the advantages that the outer layer of stainless steel is used for resisting oxidation and corrosion, the inner layer of carbon steel is used for resisting water pressure, the strength of the composite pipe is ensured, the PE at the middle part is used for bonding the stainless steel layer and the carbon steel layer into a whole, the overall strength of the composite pipe is improved, and the manufacturing difficulty of the composite pipe is reduced.

The utility model discloses a kind of green building thermal insulation wall, including substrate and composite board, the outer wall of one side of substrate away from composite board is equipped with equidistance distribution stalactite protrusion, the outer wall of substrate is opened with equidistance distribution first exhaust hole, the first exhaust hole is located in the clearance portion between adjacent stalactite protrusion, the outer wall of substrate is installed with internal thread sleeve by aperture in four corners, the outer wall of four corners of composite board is opened with equidistance distribution settlement hole, the inner wall of internal thread sleeve is equipped with compatible internal hexagon bolt with settlement hole.The utility model can quickly discharge the gas between substrate and wall by equidistance distribution first exhaust hole on substrate, prevent the gas chamber and cavity between substrate and wall, can effectively avoid the occurrence of hollowing phenomenon, avoid falling on wall, greatly improve the service life of the utility model.

The invention discloses a wall building robot which comprises a frame body, a first driving mechanism, a mortar throwing mechanism, a mortar conveying pipe and a mortar plastering mechanism. The first driving mechanism is mounted on the frame body; the mortar throwing mechanism is connected with a first output part of the first driving mechanism, so that the mortar throwing mechanism attaches mortar to a wall surface in a patting manner; the mortar conveying pipe is mounted on the mortar throwing mechanism so as to move along with the mortar throwing mechanism, and the mortar conveying pipe is used for conveying mortar to the mortar throwing mechanism; and the plastering mechanism is connected with the second output part of the first driving mechanism, so that the plastering mechanism flatly paves mortar attached to the wall surface on the wall surface along the mortar throwing path of the mortar throwing mechanism. The plastering device can replace workers to conduct plastering operation, and the working time sequence of mortar throwing and plastering is shortened.

The invention relates to the technical field of constructional engineering materials, and particularly discloses a preparation method of a lightweight high-strength phosphate cement-based anti-skid coating. The method comprises the following steps: firstly, preparing core-shell structure functional aggregate with a nano aluminum oxide and silicon dioxide composite shell; then, based on gradient design, dry powder of magnesium phosphate cement, aggregate and the like is divided into a component A and a component B, the component B is additionally enriched with the aggregate, and the fiber amount is increased; mixing the bottom layer slurry and the surface layer slurry step by step; then two layers of slurry are sequentially coated on the concrete base surface in a rolling mode, macroscopic textures are formed through coining before initial setting of the surface layer, and then the roughness is enhanced through galling treatment; and finally, naturally curing for 1-2 hours to open traffic. According to the invention, through core-shell aggregate enhancement, gradient batching and roll coating-impressing integrated construction, the coating has the comprehensive properties of light weight, high strength, high adhesion, high wear resistance and rapid passage, and is suitable for efficient and durable repair of concrete pavements such as airfield runways and expressways.

The application relates to the field of plastic particle preparation and discloses a preparation device and a preparation method for ABS modified plastic particles, which comprise a frame body, a fusion extrusion cylinder and a material mixing cylinder arranged at the upper end of the frame body, one end of the fusion extrusion cylinder is fixedly connected with an extrusion head, the inside of the extrusion head is movably connected with an extrusion disc, a plurality of extrusion holes are arranged on the surface of the extrusion disc, and one end of the extrusion head is provided with a cutting assembly; the cutting assembly comprises a movable disc movably connected to the outside of the extrusion head through a first hydraulic oil cylinder, a material taking cylinder and a motor are fixedly connected to one side of the movable disc, the output shaft of the motor penetrates to one side of the extrusion disc and is fixedly connected with a cutter, and the material taking cylinder can penetrate into the inside of the extrusion hole; equal amounts of materials are taken through the material taking cylinder, and the materials are cut by the rotation of the cutter, so that the materials are cut off in the inside of the material taking cylinder; since the materials are wrapped by the material taking cylinder when being cut off, the materials are not prone to deformation when being cut, and the cut edges of the materials cut off in the inside of the material taking cylinder are smooth.

The utility model discloses a self-adaptive leveling buckle device for tile paving, which is mainly applied to the technical field of decoration engineering appliances and comprises a base and an operating rod, the base is composed of a bottom plate, a connecting plate, a stabilizing plate and a hook plate, the connecting plate is vertically connected with the top surface of the bottom plate, and the hook plate is arranged at the top of the connecting plate. The bottom surface of the bottom plate is vertically connected with at least one stabilizing plate, the edge of the lower part of the stabilizing plate is saw-toothed, a plurality of grooves are uniformly distributed in the top surface of the bottom plate, a horizontally arranged guide groove is formed in one side of the hook plate, a hanging hole is formed in the tail end of the guide groove, the bottom of the hanging hole is tangent to the lower edge of the guide groove, and a notch is formed in the lower part of the connecting plate. By means of the self-adaptive leveling buckle device for tile laying, the tile laying leveling process can be simplified, the tile laying efficiency can be improved, the base is not prone to loosening when hammered, it is avoided that moisture permeates into a base layer to cause tile hollowing or falling off, the tile hollowing rate is reduced, and the tile laying quality is improved.

The application relates to the technical field of building materials, and particularly discloses a microbial interface agent for a post-pouring belt as well as a preparation method and application thereof. The microbial interface agent disclosed by the application comprises the following components in parts by weight: bacillus pasteurii bacterial liquid 0.02-0.06 parts, cement raw paste with a water-cement ratio of 0.4-0.5 90-110 parts, foaming agent 0.5-1 part, compatible agent 0.1-0.5 part, calcium salt saturated solution 0.2-0.5 part and aliphatic dihydric alcohol 0.03-0.07 part; the compatible agent is selected from one or more of sodium dodecyl sulfate, cocamide and polyoxyethylene ether; and the calcium salt saturated solution is selected from one or more of calcium acetate solution, calcium formate solution and calcium hypophosphite solution. The application further provides a preparation method of the microbial interface agent and an application process in the post-pouring belt. The microbial interface agent provided by the application can effectively improve the bonding strength, anti-leakage performance and durability of new and old concrete.

The invention relates to the field of pouring structures, and discloses a sandwich type assembly type outer wall composite heat preservation integrated pouring structure and method.The sandwich type assembly type outer wall composite heat preservation integrated pouring structure comprises an outer wall movable mold and an outer wall fixed mold, the outer wall movable mold and the outer wall fixed mold are oppositely arranged on a base, and an outer wall forming mold cavity is formed; the heat preservation embedded mold is arranged in the outer wall forming mold cavity and comprises at least two sets of mold cavity plates, and a heat preservation forming mold cavity is formed between the mold cavity plates; a dovetail-shaped mold core is arranged on the outer side of the cavity plate and used for forming a heat preservation layer locking space after concrete is poured. The outer wall movable mold, the outer wall fixed mold and the heat preservation embedded mold are adopted for pouring step by step, a double-outer-wall body is firstly formed, then heat preservation liquid is integrally injected, a dovetail interlocking gapless heat preservation layer is formed, and the hidden dangers of heat bridges, condensation and falling are eradicated; a butt joint groove in the inner wall of the die is in sliding fit with the checkered plate, and the die has multiple veneers and is efficient and universal.

This invention discloses a refractory spraying system and method for tundishes. The system includes guide rail modules laid along three tundish workstations, a work machinery unit equipped with a six-degree-of-freedom robotic arm, a lifting drive mechanism, modular work components integrating electrical and pneumatic connection modules, a quick-change material box, and a central control system. The six-degree-of-freedom robotic arm's range of motion can cover the entire area inside the tundish. The work method adopts a three-station continuous operation mode, precisely matching the process time of refractory spraying and drying. It can also switch between high-speed and low-speed spraying modes to adapt to different tundish wall temperatures and is equipped with a standardized construction process. This invention achieves no idle time for the work machinery, improves construction efficiency and spraying quality, eliminates blind spots in construction operations, has a high degree of automation throughout the process, low equipment maintenance costs, strong system versatility, and can adapt to the needs of industrialized batch construction.

The utility model relates to a kind of seat backrest foaming B face anti-hollow structure, including seat framework, seat foaming foamed on seat framework, and the seat backrest massage system of being set in the seat backrest position of seat framework, auxiliary limiting plate is embedded in the seat foaming located in seat backrest position, the auxiliary limiting plate is located in the seat backrest foaming close to seat backrest massage system position, the auxiliary limiting plate is fixed with seat framework by connecting nail, the auxiliary limiting plate is used to improve seat backrest foaming support strength at seat backrest massage system position after being fixed with seat framework.The utility model has the advantages that: improve the overall quality and performance of seat backrest foaming near seat backrest massage system.

The present application relates to the technical field of gypsum board forming, in particular to a kind of automatic forming equipment of gypsum board and method thereof, the present application includes base, forming conveyor belt, upper cover paper and lower cover paper, the base top is symmetrically provided with driving pressure wheel and driven feed wheel, upper cover paper and lower cover paper all pass between driving pressure wheel and driven feed wheel;The main shaft of the forming conveyor belt is the only power source of whole equipment.The present application uses main shaft as the only power source, simultaneously drives forming conveyor belt, same speed feeding mechanism, self-adapting slurry laying opening adjusting mechanism and bubble-punching type defoaming mechanism action, without additional independent power source, not only simplify the equipment structure, reduce manufacturing cost and energy consumption, also ensure that the speed of each mechanism is completely synchronous with main shaft, avoid cover paper stretching, tearing, misplacement, slurry overflow, core lack and other forming defects from the root, improve equipment running stability.