441 results about "Screed" patented technology

The invention provides a construction control system, method and equipment of an underwater leveling machine and the underwater leveling machine, and relates to the technical field of ocean engineering. The construction control system comprises a sensing subsystem used for obtaining the weight of stone in a hopper of the underwater leveling machine and the inclination angle of the hopper; the calculation subsystem is used for determining the stone mass based on the weight of the stone in the hopper and the inclination angle of the hopper and calculating the real-time material distribution mass flow rate based on the time sequence data of the stone mass; the current terrain elevation of the foundation bed is obtained to calculate the terrain residual error and the to-be-laid volume; and the control subsystem is used for generating a cloth control instruction through an optimization decision algorithm based on the real-time cloth mass flow rate, the terrain residual error, the to-be-laid volume and the predicted thickness distribution. According to the system, real-time working condition monitoring, dynamic flow calculation, terrain deviation analysis and predictive control strategies can be combined, closed-loop accurate control over the whole process from material conveying to bottom bed forming is achieved, and the control precision of underwater leveling construction is improved.

The invention relates to the technical field of concrete construction, in particular to a green low-carbon concrete construction operation device which comprises a vehicle body, a stirring tank is fixedly mounted on one side of the upper end of the vehicle body, a feeding cylinder is fixedly mounted on one side of the upper end of the stirring tank, and a feeding hopper is fixedly mounted at the upper end of the feeding cylinder. A first motor is started to drive a crushing roller and a rotating roller to rotate, the crushing roller crushes stones, the crushed stones fall at the upper end of an inclined plate, the rotating roller evenly throws the crushed stones to the upper end of a sieve plate, the stones are filtered, and the matched stone fragments fall into a stirring tank and are mixed with additives such as cement and sand to form concrete. Then a valve on the discharging pipe is opened, the vehicle body is pulled towards the concrete outlet side, the pressing cylinder rotates while moving up and down on the concrete, the surface of the concrete is vibrated to be flat, the concrete surface is leveled through the patter and the leveling plate, secondary leveling of workers is not needed, the labor intensity is reduced, and the efficiency is improved.

The invention provides a basement large plate structure steel plate overlapping reinforcing structure and a construction method, and relates to the field of structural engineering.The basement large plate structure steel plate overlapping reinforcing structure comprises a large plate structure plate reinforcing structure which is connected to the lower portion of an original concrete plate and located in a large plate structure plate reinforcing area. The large plate structure plate reinforcing structure comprises a prefabricated newly-added concrete structure which is prefabricated and poured on the upper portion of a reinforcing steel plate, and a notch is reserved in the upper end of the prefabricated newly-added concrete structure; the reinforcing steel plate is arranged on the lower portion of the prefabricated newly-added concrete structure, and interface connection between the reinforcing steel plate and the prefabricated newly-added concrete structure is further achieved through the shear connector. The connecting steel bars are arranged on the reinforcing steel plates; the mortar layer is arranged on the upper surface of the convex part of the prefabricated newly-added concrete structure; the cast-in-place newly-added concrete is arranged at the notch; and the tensile steel bars are partially embedded in the original concrete slab and are partially embedded in the cast-in-place newly-added concrete. The original large plate structure can be reinforced conveniently, quickly, economically and reasonably, the bearing capacity of the structure is improved, and the durability of the structure is enhanced.

A slipform paver includes a slipform mold having a mold width extending transverse to a paving direction. At least one leveling beam is supported behind the slipform mould for engaging an upper surface of the formed unhardened concrete structure to level the upper surface, the at least one leveling beam being configured to oscillate transversely to the paving direction. At least one forward speed sensor is configured to provide a forward speed signal corresponding to a forward speed of the slipform paver in the paving direction. The controller is configured to receive the forward speed signal and generate a command signal to control the lateral oscillation frequencies of the at least one leveling beam such that a constant relationship is maintained between the forward speed lateral oscillation frequencies.

The invention provides a waterproof connecting structure of an anti-floating anchor rod node, and belongs to the technical field of anti-floating anchor rod construction of constructional engineering. The structure comprises an anti-floating anchor rod, a waterproof connecting assembly, a polymer cement waterproof mortar layer and a fine aggregate concrete protection layer. The lower end of the anti-floating anchor rod is anchored in the concrete anchoring body of the basement structure layer, and the upper end penetrates through the anchoring plate through hole; the waterproof connecting assembly is composed of an anchoring plate and a pre-buried support, the lower end of the pre-buried support is pre-buried in the concrete anchoring body, and the anchoring plate is fixed between the supports. The concrete cushion layer and the anchoring body are sealed through polyurethane sealant, and a waterproof mortar layer, a self-adhesion waterproof roll and a reinforced fine aggregate concrete protection layer are sequentially laid on the concrete cushion layer and the anchoring body to form a totally-closed waterproof system. Through the design of multi-layer collaborative protection and the rigid support, the problems that a traditional joint is prone to leakage, and an anchoring plate displaces are solved, the horizontal displacement resisting capacity is improved, the construction efficiency is improved, and the structure is suitable for anti-floating projects such as basements and basement and has high waterproofness, structural stability and economical efficiency.

The invention relates to the technical field of building materials, and particularly discloses ultra-high performance concrete containing coarse aggregate, a preparation method of the ultra-high performance concrete and a method for testing the abrasion resistance of the ultra-high performance concrete, the ultra-high performance concrete containing the coarse aggregate comprises cement, a mineral admixture, fine aggregate, steel fiber, the coarse aggregate, an additive and water, and the coarse aggregate is pretreated through cationic emulsified asphalt. The coarse aggregate ultra-high performance concrete is subjected to molding preparation, demolding maintenance, vacuum water saturation and other processes to obtain an original test piece for testing the abrasion resistance, two sub test pieces are obtained after radial cutting, and the mass of the test pieces before and after abrasion is weighed to obtain the abrasion resistance strength. According to the testing method, the abrasion resistance of the surface mortar layer and the abrasion resistance of the internal aggregate layer in the same test piece can be compared, and the abrasion resistance of the ultra-high performance concrete containing the coarse aggregate can be evaluated more comprehensively and objectively. The coarse-aggregate ultra-high-performance concrete has excellent mechanical properties, the abrasion resistance is enhanced, the use amount of a cementing material can be effectively reduced, and the production cost is reduced.

The present invention relates to a rotating device for integration in a substrate, preferably in a building floor element, more particularly in a screed floor, having at least three support units, which can be arranged individually in the circumference of the substrate within a circular area about an axis of rotation, a rotating plate which extends at least over the circular area and has a room side and a bearing side opposite the room side, a rotary bearing unit, and at least one drive apparatus, wherein the rotating plate is rotatably mounted in the axis of rotation and the at least three support units support the rotating plate in a rotationally movable manner in the orientation of the axis of rotation in a vertical axis on the bearing side, and wherein the drive apparatus is configured to set the rotating plate in rotation about the axis of rotation.

The utility model discloses a water stop structure suitable for an upper gate room of a high gate with a deep and thick covering layer in the technical field of engineering water stop, which comprises a plurality of gate plates, a structural seam is arranged between two adjacent gate plates, the structural seam is communicated with a water stop cavity, and a water stop device is filled in the water stop cavity. The water stop device comprises a first mortar layer, a flexible filler layer and a second mortar layer which are sequentially filled in the structural joint from top to bottom, a copper sheet water stop assembly and a water stop belt assembly are arranged on the flexible filler layer in a penetrating mode at intervals, the overall structure is large in flexibility effect, the function of adapting to large uneven deformation between adjacent gate sections can be achieved, damage is not prone to occurring, and the service life of the water stop device is prolonged. Therefore, safe operation of the water gate structure is guaranteed.

The invention provides an asphalt concrete paver, and relates to the technical field of pavers. The paver comprises a vehicle body, a first driving mechanism, a paving mechanism, a first connecting mechanism and a discharging mechanism, the vehicle body comprises a hopper. The first driving mechanism comprises a supporting frame and a driving lead screw which is arranged in the supporting frame in a penetrating mode and driven by a first motor to rotate. The paving mechanism comprises an ironing plate connected with the driving screw rod; the first connecting mechanism comprises a connecting plate connected to a rod body of the driving screw rod, and the other end of the connecting plate is connected with the ironing plate; the discharging mechanism is arranged at the bottom of the car hopper and comprises a first rotating shaft and a plurality of blades, the first rotating shaft penetrates through the discharging channel in the direction perpendicular to the bottom of the car hopper, the blades surround the first rotating shaft and are located in the discharging channel, and one end of the first rotating shaft is connected with the driving lead screw through a linkage structure; and the driving screw rod is used for driving the ironing plate to move and driving the first rotating shaft to rotate through self rotation, so that the paving uniformity and the discharging speed uniformity can be synchronously improved.

A road finishing machine comprises a screed for producing a paving layer from a paving material, a material bunker for receiving the paving material, a longitudinal conveying device configured to transport the paving material from the material bunker toward the screed, and a transverse distributor auger configured to distribute the paving material transported by the longitudinal conveying device transversely in front of the screed. The transverse distributor auger is mounted in front of a screed basic body of the screed within a transverse distributor channel, which is formed at least in sections by channel plates supported at a chassis of the road finishing machine, and by pre-scrapers attached laterally of a screed basic body of the screed. The road finishing machine further includes at least one suction device with at least one intake line which is configured to suck off aerosols forming during the transverse distribution of the paving material.

This invention provides an asphalt finisher that can precisely adjust the width of the screed by extending and retracting the screed extension cylinder at an appropriate extension and retraction speed. [Solution] The asphalt finisher 100 is equipped with a screed 3 that spreads and levels the paving material PV while moving in the laying direction. The asphalt finisher 100 includes a screed extension cylinder 26, a switching valve 34, a screed position sensor 51C, and a controller 50. The controller 50 calculates the target trajectory of the side frame 32 where the side frame 32 is located, and calculates the extension and retraction speed of the screed extension cylinder 26 based on the deviation between the target trajectory of the side frame and the current position of the side frame 32 detected by the screed position sensor 51C. The controller 50 then controls the screed extension and retraction cylinder 26 by switching the switching valve 34 on and off based on the extension and retraction speed.

The utility model relates to a walking unit for a magnetic wheel type automatic trowelling machine, which is characterized by comprising a driving motor mounted on a motor supporting platform, and the motor supporting platform is fixedly connected with a walking frame of the trowelling machine; the driving wheel is connected to the driving motor; the transmission belt or the transmission chain is connected with the driving wheel; the two magnetic walking wheel sets are connected to the driving wheel through the transmission belt or the transmission chain. Through the unique magnetic walking wheel set design and the reasonable transmission structure, the walking stability and accuracy of the automatic trowelling machine can be effectively improved, the trowelling operation quality is guaranteed, and the production requirements of the modern large concrete prefabrication industry for high-quality concrete prefabricated parts are met.

The invention relates to the technical field of underwater leveling machine construction, in particular to an underwater leveling machine with an obstacle handling function. Comprising a leveling machine main frame and a stone digging device, the stone digging device comprises a digging arm and a digging bucket connected to the front end of the digging arm, and the digging arm is arranged on the leveling machine main frame and can move transversely and longitudinally relative to the leveling machine main frame. According to the underwater leveling machine with the obstacle handling function, the stone digging device is arranged on the leveling machine main frame, the stone digging device comprises the digging arm, the digging bucket is arranged at the front end of the digging arm, and when stone possibly interfering with a material distribution pipe is encountered, the digging arm transversely and longitudinally moves relative to the leveling machine main frame, so that the material distribution pipe can be blocked; when the underwater leveling machine works underwater, the excavator bucket is moved to a preset position, the stones are excavated, then the excavating arm transversely and longitudinally moves relative to the leveling machine main frame, the stones are moved to other positions, and therefore the purpose of assisting in obstacle removing in the underwater operation process of the underwater leveling machine is achieved.

The utility model discloses a high-performance fireproof heat-insulation XPS (extruded polystyrene) insulation board for a building, and relates to the field of XPS insulation boards. The thermal insulation board comprises a thermal insulation board body, elastic mesh cloth is fixedly pasted on the periphery of the back of the thermal insulation board body, the whole elastic mesh cloth is of a concentric-square-shaped structure, the outer edge of the elastic mesh cloth extends to the outer side of the thermal insulation board body, and when adjacent thermal insulation board bodies are spliced, the elastic mesh cloth is of a staggered structure. According to the utility model, through the clip-shaped elastic mesh cloth, after a plurality of insulation board main bodies are mounted, the elastic mesh cloth on the back parts of the insulation board main bodies can naturally form a staggered structure, so that the mounting structure firmness between the insulation board main bodies and a wall surface is enhanced, and more importantly, the deformation stress can be effectively dispersed; due to the fact that the wall face and the mortar layer possibly generate tiny deformation due to thermal expansion and cold contraction, the staggered structure of the elastic screen cloth can absorb the deformation, and therefore the influence on the heat preservation plate body is reduced.

The utility model relates to an ironing plate for a paver and belongs to the field of pavers. According to the technical scheme, the device comprises a basic section ironing device, telescopic section ironing devices are arranged on the two sides of the basic section ironing device in a sliding mode respectively, a telescopic mechanism is arranged between the basic section ironing device and the telescopic section ironing devices, a connecting frame is arranged on the basic section ironing device, and a first guide hole is formed in the connecting frame; the telescopic mechanism comprises a first side end plate, a second side end plate and two layers of sliding columns arranged between the two side end plates, the number of each layer of sliding columns is at least two, the upper layer of sliding columns are arranged in the first guide holes in a sliding mode, the lower layer of sliding columns are connected with the telescopic section ironing device in a sliding mode, and the two layers of sliding columns move together during primary stretching; the two layers of sliding columns do not move in the second-stage stretching and retracting process, the stretching and retracting section ironing device moves in the length direction of the sliding columns to complete second-stage stretching and retracting, and the situation that due to the fact that two independent stretching and retracting mechanisms are adopted on one side, the torsional deformation resistance is weak, and then the requirement for heavy-load construction is difficult to meet is avoided.

The utility model discloses a high-strength vacuum heat insulation wallboard, which belongs to the technical field of building materials and comprises a bearing plate, an adhesion agent layer, an adhesive mortar layer, a vacuum heat insulation core plate, a heat insulation mortar layer and a plastering mortar layer which are sequentially arranged, and steel wire meshes are respectively embedded in the adhesive mortar layer and the heat insulation mortar layer. The vacuum heat insulation core plate is formed by arranging a plurality of vacuum core plate units, and the bearing plate is a cement-based fiber plate or a calcium silicate plate. According to the high-strength vacuum heat insulation wallboard provided by the utility model, the steel wire meshes are respectively arranged on the two sides of the vacuum heat insulation core board, the vacuum heat insulation core board is clamped between the steel wire meshes, and the bearing plates with high rigidity are additionally arranged on the basis of arranging the mortar layers, so that the strength of the heat insulation wallboard is improved.

A leveling system for a road paver with a screed, having: a measuring system; and a controller; the measuring system having first and second sensors, the first sensor being arranged in front of the second sensor in the direction of travel and configured to measure a first distance from the first sensor to a further ground with an offset height level to obtain a first height value, and the second sensor being arranged in front of the screed and configured to measure a second distance from the second sensor to a ground or reference of the construction machine to obtain a second height value; the controller being configured to determine the offset based on the first and second height values by forming a difference, to determine a set value for an adjustment based on the offset, and to control the screed depending on the set value.

A method for obtaining a concrete construction element by additive manufacturing, in which superposed mortar layers are successively deposited so as to form two wall surfaces, opposite one another, so as to form a cavity, as well as a plurality of reinforcement elements each extending from one of the wall surfaces toward the cavity, each reinforcement element being in contact with neither the wall surface opposite to that from which it extends, nor with a reinforcement element extending from the opposite wall surface to that from which it extends.

The invention relates to the technical field of wear-resistant terrace construction, and discloses a construction method of a wear-resistant terrace. The method comprises the following steps: (1) pouring an interface agent on a base layer to obtain an interface agent layer; the interface agent is neat cement paste or a combination of neat cement paste and polymer emulsion; (2) semi-dry slurry containing dry and hard cement mortar is laid on the interface agent layer for fine leveling construction, and a dry and hard cement mortar layer is obtained; the mass ratio of dry hard cement mortar to water in the semi-dry slurry is 100: (7-11); and (3) sequentially arranging a wear-resistant aggregate layer and a curing agent layer on the upper surface of the dry hard cement mortar layer to obtain the wear-resistant floor. By means of the construction method of the wear-resistant floor, one-time precise leveling can be achieved, and the construction period is remarkably shortened.

The utility model discloses composite anti-corrosion felt cloth capable of being quickly paved. The composite anti-corrosion felt cloth comprises a water-permeable net surface layer, a metal net surface layer, a mortar layer and a bonding layer, an upper splicing edge opening and a lower splicing edge opening are formed in the two sides of the permeable net surface layer respectively, and the upper splicing edge opening and the lower splicing edge opening can be in seamless butt joint; the permeable net surface layer is divided into an upper net surface layer and a lower net surface layer, and the space between the upper net surface layer and the lower net surface layer is filled with the metal net surface layer and the mortar layer; the bonding layer is attached to the lower end face of the lower net face layer. The composite anti-corrosion felt cloth can be rolled up, the width is fixed, and the length can be freely cut; the two pieces of composite anti-corrosion felt cloth can be attached and spliced on the outer surface of the steel structure stand column or the building stand column; the mesh layer and the bonding layer generate a corrosion-resistant layer on the surface of the building stand column, and the adsorbability of cement on the surface of the building stand column is improved; and cement packaging or follow-up construction of the building stand column is facilitated.

The utility model belongs to the field of building construction walls, and particularly relates to an auxiliary component for intelligent construction, which comprises two outer vertical walls, inner frameworks and filling materials, the inner frameworks are attached to the inner sides of the two outer vertical walls, the filling materials are attached between the inner frameworks on the two sides, and the filling materials are arranged between the outer vertical walls and the inner frameworks. The outer vertical wall is of a zigzag structure. According to the structure, internal filling materials can be sprayed and built through 3D printing equipment, the external wall body can be decorated at will according to design requirements, the mortar layer can be sprayed and built only after workers bind reinforcing steel bars, the whole building of the wall body can be completed, and the construction efficiency and the accuracy after the wall body building is completed are improved.

The utility model discloses indoor window construction structure, it includes wall body, window frame, windowsill pressing plate, windowsill board, the top of wall body is fixed with windowsill pressing plate through mortar layer, the top end surface of windowsill pressing plate is fixed with the vertical setting of window frame, the side of window frame close to the interior is equipped with the horizontal setting of windowsill board, and the bottom end surface of windowsill board is fixedly connected with the top end surface of windowsill pressing plate, and the side of windowsill pressing plate close to the interior is equipped with the horizontal setting of threaded column, and the vertical support is set up on threaded column, and the vertical support is abutted with wall body through fastening nut, and the top of vertical support is fixed with horizontal support, and the top end surface of horizontal support is fixedly connected with the bottom end surface of windowsill board.

The invention relates to the technical field of underwater leveling machine construction, in particular to a rigid-flexible combined feeding system of an underwater leveling machine and the underwater leveling machine. The material distribution pipe can move in the transverse direction and the longitudinal direction; a feeding bin is arranged at one end, close to the lower part, of the material conveying device; the upper end of the material guiding hose is connected with the material conveying device, a feeding port of the material guiding hose corresponds to the discharging position of the material conveying device, and the lower end of the material guiding hose extends into the material distributing pipe from the top of the material distributing pipe. According to the rigid-flexible combined feeding system of the underwater leveling machine, on the basis of deformation of the material guide hose, even if a certain deviation exists between the discharging position of the material conveying device and the feeding position of the top of the material distribution pipe in the vertical direction, stone can be accurately conveyed into the material distribution pipe through the material guide hose for material distribution; the difficulty that constructors operate the material conveying device to be vertically aligned with the material distribution pipe is lowered, then the skill requirement for the constructors is effectively lowered, and the labor cost is lowered.

The disclosure relates to a road paver for producing a paving layer from a paving material. The road paver comprises a screed, a transverse distribution arrangement and a pre-scraper arrangement. The screed comprises at least one base screed. The transverse distribution arrangement is adapted to distribute the paving material transversely to a drive direction of the road paver in front of the screed. The pre-scraper arrangement is arranged behind the transverse distribution arrangement in the drive direction. The pre-scraper arrangement has a height-adjustable pre-scraper blade arranged in the region of the base screed. The disclosure also relates to a method for operating a road paver.

The present application relates to a kind of high-quality installation construction methods of zero-carbon building fabricated thermal insulation wall surface, to improve installation quality effect.It is that high-strength fireproof thermal insulation secondary board and anti-cracking leveling mortar layer and decorative layer are respectively outwardly arranged on the both sides of fireproof thermal insulation main board embedded in wall frame;Wherein the setting of secondary board and anti-cracking leveling mortar layer: main board and two secondary boards are first transversely penetrated with non-metal heat insulation bridge connecting piece, the two screw rod ends of connecting piece are screw-fitted with inner limiting fastening disc, then steel wire mesh is hung, at least one limiting pad is embedded in the inner side position of steel wire mesh between inner limiting fastening disc before or after hanging steel wire mesh, which is used to limit the distance from secondary board, the outer limiting fastening disc of connecting piece is screw-fitted with inner limiting fastening disc, which is opposite to steel wire mesh, and then anti-cracking leveling mortar is used for leveling.The present application has the advantages of overcoming the defect of low overall strength of fireproof thermal insulation main wall, good overall strength stability and thermal insulation performance of wall surface, good weather resistance and fire resistance, long service life, and realizing high-quality fabricated installation construction.

A screed plate for a screed assembly to be towed by a mobile paver has a lower textured surface including a plurality of protruding elements arranged in a gradation pattern. The gradation pattern is characterized by an increasing number or density of protruding elements between a forward leading edge and a rearward trailing edge of the screed plate. The gradation pattern is also characterized by a decreasing size of the protruding elements between the forward leading edge and the rearward trailing edge. The protruding elements may be shaped as oblong rhombic pyramids defining channeling grooves there between.

The utility model discloses a prefabricated concrete coping construction structure of outer wall windowsill, it includes prefabricated windowsill board, window frame, window, and the end face of window bottom wall body is fixed with at least one prefabricated windowsill board through mortar layer, and prefabricated windowsill board includes integrated horizontal part, vertical part and inclined part, and horizontal part sets up close to indoor one side, and inclined part sets up close to outdoor one side, the bottom of window frame is fixedly connected with the top end surface of horizontal part through flexible part, and the window wall of window frame close to outdoor one side and vertical part abut, and the junction of window wall of window frame close to outdoor one side and inclined part is filled with sealant, the utility model has the advantages of: saving construction time through prefabricated concrete coping, and not needing to pour in the field, and only need to be embedded in the wall body of window two sides with the steel plate 19 matched with angle steel, and the prefabricated concrete coping can be fixed at the window place, and the operation is simple and convenient.

The utility model belongs to the technical field of building engineering, specifically discloses a heavy nonferrous metal smelting engineering existing pool anticorrosive and anti -infiltration structure. The reinforced concrete bottom plate and lateral wall of structure are closed into pool, the surface of reinforced concrete bottom plate is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, fine stone concrete layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the surface of reinforced concrete lateral wall is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, polymer cement mortar layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the layer of aforementioned same name of reinforced concrete bottom plate and lateral wall surface, geotextile and geomembrane correspond to head -tail link, and fine stone concrete layer and polymer cement mortar layer correspond to head -tail link. The utility model has the characteristics of simple structure, convenient construction, good anticorrosive and anti -infiltration performance and low cost.