46results about How to "Guarantee paving quality" patented technology

The invention discloses an asphalt concrete regenerative heating and heat-preservation mixing carrier vehicle which comprises a vehicle body, an asphalt regenerative heating device and an emulsified asphalt spraying device, wherein the asphalt regenerative heating device and the emulsified asphalt spraying device are arranged on a chassis of the vehicle body; the asphalt regenerative heating device comprises a hydraulic power system, a rotary tillage stirring system, a heating heat-preservation system, an asphalt pumping system, a material metering device and a smoke dust removal system. The processing and transporting amount can be 6m<3>, the mixing carrier vehicle is suitable for large-scale asphalt pavement construction so as to guarantee the pavement paving quality, the field construction operation is promoted, and the problems of regenerative utilization, transport, storage and environmental pollution of asphalt pavement milling wastes and maintenance and repair of the asphalt pavement in winter are comprehensively solved. Meanwhile, the problem that heat of asphalt is dissipated during ultra-long distance transport and super-long time construction is solved, and the asphalt pavement maintenance cost is greatly saved.

The invention relates to a cement mortar tooth rake and a method for laying tiles on floor. The cement mortar tooth rake comprises a rake body. The rake body is of a rectangular plate structure.. Longsides of the rake body are horizontal and a plate surface is vertical so as to scrape the cement mortar laid on the floor by using a lower edge of the rake body. One end of the rake body is connectedwith a control positioning part in the length direction of the rake body to facilitate the control of the rake body. The lower surface of the control positioning part is horizontal, the lower surfaceof the control positioning part is used as a positioning surface to control the rake body by the control positioning part, and the positioning surface is closely attached to the existing horizontal surface to slide to implement the scraping of the cement mortar by the rake body. Height difference exists in the positioning surface and the lower edge of the rake body in the gravity direction. The lower edge of the rake body is provided with a plurality of downward convex teeth at intervals with equidistance in the length direction of the rake body. According to cement mortar tooth rake and themethod for laying the tiles on the floor, the laying construction efficiency of the tiles on the floor can be effectively improved, and the laying quality is easy to guarantee; and dry cement mortar is scraped horizontally, at the same time, groove mark is scraped at the upper surface of a dry cement mortar cushion, so that the bonding of the tiles on the floor is more firm.

The invention provides a combustion chamber of a paver, which comprises a screed box having a bottom screed, a combustion chamber, a linear heater having a linear heating pipe and a heat-insulating plate which is arranged in the combustion chamber and positioned between the linear heating pipe and the bottom screed. The combustion chamber is capable of solving the problem that the quality of roadpaving is lowered due to the deformation of the bottom screed caused by the local overheat of the bottom screed.

The invention provides a method for temporarily blocking a simply supported girder bridge expansion joint. The method comprises the following steps that a girder plate is installed on a bridge lower structure which is verified to be qualified according to design requirements; according to a bridge expansion joint design drawing, a height-adjustable blocking device is manufactured; bridge pavementreinforcing steel bars are bound according to a design drawing, a template is supported, then concrete is poured, and a groove is reserved in the end of the expansion joint along a longitudinal beam of the bridge during concrete pouring; according to the height difference between the groove in the expansion joint and the position of the corresponding beam plate, the height-adjustable blocking device is installed on the groove, and the middle position of the blocking device is supported through the beam plate; asphalt is paved on the bridge deck. After the bridge deck is paved and before asphalt is paved, the blocking device is arranged at the expansion joint to block the expansion joint, so that the expansion joint is temporarily and compactly blocked, the asphalt paving quality is guaranteed, and part of construction vehicles can conveniently pass through the expansion joint.

The invention discloses a fixing assembly. The fixing assembly comprises a locking belt and a buckling piece. The locking belt comprises a supporting head and a connection arm connected to the supporting head. The buckling piece can be connected into the connection arm in a sleeved mode. The buckling piece can be selectively locked and positioned on the connection arm in the length direction of the connection arm. The connection arm penetrates through a formwork. A sheet panel material is attached to and abuts against the formwork. The buckling piece is sleeved with and connected into the connection arm so that the sheet panel material and the formwork can be clamped and fixed between the supporting head and the buckling piece. Thus, the sheet panel material is fixed to the formwork used for manufacturing a concrete prefabricated part through the locking belts and the buckling pieces of the fixing assembles, the sheet panel material is prevented from falling in the manufacturing process of the concrete prefabricated part, the requirement for the skill of operators is lowered, the sheet panel material laying flatness is ensured, and the laying quality of the sheet panel material is then ensured; the construction efficiency of the concrete prefabricated part manufacturing is improved, the construction cost is greatly reduced, and pollution to the environment is reduced. The invention further discloses a construction method for manufacturing the concrete prefabricated part through the fixing assemblies.

The invention relates to a material discharging and paving device and a material paving robot, comprising: a material storage device, which is installed on a chassis and used to store materials to be paved; a material discharging control device, the A material control device is arranged on the chassis, and is used to open or close the material to be paved discharged from the storage device; and a vibration discharge device, the vibration discharge device is arranged on the storage device on the material storage device, and is used to discharge the material to be paved from the storage device. Since the entire operation process of the material paving robot does not require human intervention, it greatly liberates the labor force of the workers and reduces the labor cost of the enterprise. The material paving robot can work continuously, with high work efficiency, and the flatness of the paving mortar layer is good. It is beneficial to ensure the quality of subsequent floor tile laying.

The invention discloses an additional-groove-free cast-in-place pile vertical waterproof roll attaching device and a construction method thereof and belongs to additional-groove-free underground comprehensive pipe pack construction methods. The additional-groove-free cast-in-place pile vertical waterproof roll attaching device comprises a walking trolley and a vertical roll attaching device body.The additional-groove-free cast-in-place pile vertical waterproof roll attaching device is characterized in that the walking trolley comprises a telescopic arm rod, a steel wire rope and a trolley winch; the vertical roll attaching device body comprises a re-pressing roller, a roll pressing wheel, a self-adhesion roll roller, a roll film collecting roller and a connecting rod component; the roll attaching device body is connected and fixed through the connecting rod component; the position of the vertical roll attaching device body is adjusted through the telescopic arm rod; the roll attachingdevice body is lifted by the trolley winch to carry out self-adhesion roll vertical attaching work and is connected with the telescopic arm rod through the steel wire rope; the re-pressing roller, the roll pressing wheel and the self-adhesion roll roller are all driven wheels; and the roll film collecting roller is a driving wheel.

The invention provides a paving operation speed measuring method for a paver. The method comprises the steps of S1, establishing a paver construction plane coordinate system, and initializing a sampling frequency of a GPS receiver; S2, in an operation process of the paver, sequentially collecting longitude and latitude coordinates of the position of the paver by the GPS receiver according to the sampling frequency; S3, converting the longitude and latitude coordinates obtained at a current sampling time point to the paver construction plane coordinate system so as to obtain current construction plane coordinates; S4, calculating current operation speed of the paver according to the current construction plane coordinates, construction plane coordinates at a previous sampling time point andthe sampling frequency; and S5, repeating the steps S2 to S4 until the paver stops operation. A paver construction plane coordinate model is built, and an accurate calculation model of the paving speed of the paver is built, so that the change of the paving speed can be conveniently discovered in time to adjust the paving operation speed for ensuring the paving quality, the adaptability is high, and the accuracy is high.

The invention discloses an equal-stroke double-vibrating device of an asphalt spreading machine, which comprises an eccentric shaft and a front vibrating device, a rear vibrating device, a left fixed supporting part and a right fixed supporting part which are installed on the eccentric shaft, wherein the eccentric shaft comprises a left outside eccentric segment, a left non-eccentric segment, a left inside eccentric segment, a central non-eccentric segment, a right inside eccentric segment, a first right non-eccentric segment and a right outside eccentric segment which are sequentially arranged from left to right and are connected with each other, the eccentric directions of the left outside eccentric segment and the right outside eccentric segment are identical, the eccentric distances of the left outside eccentric segment and the right outside eccentric segment are e1, the eccentric directions of the left inside eccentric segment and the right inside eccentric segment are identical, the eccentric distances of the left inside eccentric segment and the right inside eccentric segment are e2, e1 is equal to e2, the eccentric directions of the left outside eccentric segment and the left inside eccentric segment are opposite, and the eccentric directions of the right outside eccentric segment and the right inside eccentric segment are opposite. According to the invention, the influence of inertia force on the spreading machine is effectively eliminated, the structure of the vibrating device of the spreading machine is simplified, and the vibration influence of the vibrating device on an ironing plate during working is reduced.

The invention discloses an ironing plate. The ironing plate comprises a main body (1) of the ironing plate. The ironing plate also comprises a distortion preventing device (2), wherein the distortion preventing device (2) is symmetrically installed at the back side of the main body (1) of the ironing plate relative to the center line (L-L) of the main body (1) of the ironing plate along the width direction of the main body (1) of the ironing plate; and moreover, the distortion preventing device (2) and the main body (1) of the ironing plate form a truss structure. The invention also discloses a spreading machine with the ironing plate. The integral bending rigidity and torsional rigidity of the ironing plate are better, and the phenomena of bending and torsional deformation are not easy to occur.

The invention discloses a mixing method of a high-performance emulsified asphalt plant-mixed cold-recycling mixture, which comprises the following steps: mixing an old asphalt mixture with a new asphalt mixture according to a certain proportion, and then putting into a stirring tank body, wherein the stirring tank body is an elliptical top-opening tank body and is separated into two parts by a bent plate; putting the mixed new-old asphalt mixture into the first part and stirring; enabling the bent plate to rotate so that the mixture is driven to rotate and finally stop at a position where the mixture is limited in the second part; mixing the mixture with a certain amount of cement powder and aluminum smelting waste residue, and stirring; spraying a certain amount of emulsified asphalt into the mixture doped with the cement and aluminum smelting waste residue from the direction above the second part of the stirring tank body; squeezing in a certain amount of water through a bottom opening of the second part of the stirring tank body; and stirring. The method can improve the mixing quality of the emulsified asphalt and realize uniform coating of the emulsified asphalt so as to guarantee the pavement quality.

The invention relates to construction equipment for public facilities. The purpose is to provide a pumping distributor for road paver, which should be able to effectively solve the problem of lateral segregation of pavement mixture caused by the screw distributor, slow distribution of materials restricting the paving speed, and convenient assembly and disassembly, and simple cleaning. . The technical scheme is: a pumping distributor for a road paver, characterized in that: the distributor comprises a semicircular steel pipe arranged below the rear hopper and arranged horizontally to receive the road mixture released by the rear hopper, and can be arranged along the semicircle. The steel pipe is axially moved to pump the piston of the road mixture, the first hydraulic cylinder that drives the piston, and the two axial ends of the semi-circular steel pipe are connected in series in a coaxial line, and each is provided with an opening extending along the bus bar for conveying the road mixture. Several sections of open steel pipes.

The invention discloses a 3D paving construction technology for asphalt pavement, which belongs to the technical field of road construction. The invention uses a paver equipped with a 3D paving automatic control system for construction, without complex and heavy operations such as setting out, piling, and hanging wires, which can not only significantly reduce labor intensity, but also greatly speed up construction. The invention uses a 3D paving automatic control system and cooperates with a warm mixing agent to carry out paving construction, which not only can ensure the quality of paving construction, but also can reduce the emission of harmful smoke generated by asphalt paving.