93results about How to "Improve paving quality" patented technology

The invention discloses a kerbstone paving vehicle-mounted mechanical arm. According to the kerbstone paving vehicle-mounted mechanical arm, a vehicle body is provided with a seat, a control platform, a steering mechanism, a driving system composed of a motor and a power supply, the kerbstone paving vehicle-mounted mechanical arm, a lime-sand mortar paving mechanism, and a lime-sand mortar pushing mechanism; the kerbstone paving vehicle-mounted mechanical arm is composed of a kerbstone lifting platform and a kerbstone grabbing mechanism; the kerbstone grabbing mechanism can be used for realizing automatic grabbing and clamping of kerbstone; the kerbstone lifting platform can be used for free moving of lifted kerbstone along horizontal X axis, longitudinal Y axis, and vertical Z axis, rotating around the vertical Z axis at a certain angle, and automatic balance fine adjustment. Fuel powder is not adopted by the kerbstone paving vehicle-mounted mechanical arm; noise is low; no pollution is caused; the kerbstone paving vehicle-mounted mechanical arm is green and friendly to the environment; full-time construction can be realized; mechanized automatic installation of kerbstone can be realized; paving efficiency and paving quality of kerbstone are improved; labor intensity of workers is reduced; and the blank of road building machines in the field of kerbstone paving is filled.

The invention discloses a striker plate (10) for a paver, wherein the striker plate (10) comprises a fixed baffle plate (1) and a movable baffle plate (2); and the movable baffle plate (2) is rotatably connected on the lower end of the fixed baffle plate (1) so as to adjust the integral height of the striker plate (10). The invention further discloses a paver. The integral height of the striker plate is adjustable so as to be adapted to operating requirements of the paver under different working conditions, so that the materials can be prevented from falling and separating to ensure paving quality.

The invention relates to a movable asphalt spreading device. The device comprises asphalt nozzles arranged on a nozzle installation frame at intervals, wherein the nozzle installation frame is arranged on a guide rail; the guide rail is arranged on a guide rail installation frame; and a movable control component for driving the nozzle installation frame to move along the guide rail is arranged between the nozzle installation frame and the guide rail installation frame. A transversely-moving asphalt spreading device has the advantages of small occupied space and simple and compact structure. Asphalt can be sprayed on a road surface to be paved when the nozzle installation frame moves transversely along the guide rail, so that automation degree is high. The nozzles spray in a single travel of forward and backward movement of the nozzle frame, so that non-uniformity easily caused by uninterrupted asphalt spraying of the nozzles when a paver paves at a low speed is avoided, so that paving quality is improved.

The invention relates to a spraying apparatus, a paving machine, and a construction method of liquid-state asphalt. The asphalt spraying apparatus is arranged on a body of the paving machine through an installation frame. The asphalt spraying apparatus is arranged on the rear part of the paving machine, and in front of a material-distributing screw. The asphalt spraying apparatus comprises a fixed frame, a slide frame, a spraying nozzle, and a driving apparatus. An inflow pipeline, a backflow pipeline, a spraying pipeline, and controlling valves which with the pipelines communicate with each other are arranged in the spraying nozzle. A speed measuring sensor used for determining a sideslip speed and a displacement of the slide frame is arranged on the fixed frame. The spraying nozzle is connected with an asphalt input pipe through an asphalt inlet pipe, and is connected with an asphalt backflow pipe through an asphalt outlet pipe. The asphalt input pipe and the asphalt backflow pipe communicate with an asphalt storing tank. An asphalt pump and a gas/liquid controlling valve are arranged on an input end of the asphalt input pipe. The gas/liquid controlling valve is connected to an air compressor through a gas pipeline. The apparatus provided by the invention is advantaged in small land occupation, simple and compact structure, and high automation degree. With the spraying apparatus, during a paving machine low-speed paving procedure, the spraying nozzle is prevented from continuously spraying asphalt, such that a non-uniform paving phenomenon is avoided, and a paving quality is improved.

The invention discloses a screw material distributor with a heating device and a paver of the screw material distributor. The screw material distributor with the heating device comprises a spiral elevating ratchet wrench, a spiral machine case, a spiral stretching and pulling device, a striker plate, left and right main segment screws and left and right extension segment screws, wherein the heating device is arranged in at least one of main segment screw shafts of the left and right main segment screws and extension segment screw shafts of the left and right extension segment screws. According to the screw material distributor with the heating device disclosed by the invention, the heating device is located in one screw shaft; the heating device is used for evenly heating an asphalt mixture through the screw shafts which are fully embedded into the asphalt mixture when working; the heat utilization rate is high; reheating of the asphalt mixture in movement is realized; temperature storage is improved for to-be-paved asphalt which is to enter the bottom of an ironing board; and temperature segregation of the asphalt mixture is effectively reduced.

The invention discloses a leveling system, a paver and a leveling method. The leveling system comprises a first sensor for detecting height deviation on two sides of a screed plate and a speed difference controller. According to the leveling system and the leveling method disclosed by the invention, a height deviation signal of the first sensor is received by virtue of the speed difference controller, and the motion of left and right leveling displacement regulators is controlled by virtue of a mode of limiting the speed difference between the left and right large-arm hinge joints. According to the leveling system and the leveling method, the problem that the screed plate is twisted because the actions of leveling displacement regulators (generally leveling cylinders) on two sides of a main engine are not coordinated is fundamentally solved by limiting the speed difference between the left and right large-arm hinge joints, so that the pavement paving quality is improved, and various construction conditions are met.

The invention provides a retractable screed plate structure which comprises a main screed plate (10), an accessory screed plate (20), a floating barrier (30), a guide component (40) and an elastic component (50), wherein the main screed plate (10) and the accessory screed plate (20) are mutually retractable; the guide component (40) is arranged on the main screed plate (10); the floating barrier (30) is slidably arranged along the guide component (40), and biased and abutted against the accessory screed plate (20) by virtue of the elastic component (50). The invention also provides a paver with the retractable screed plate structure. By using the retractable screed plate structure and spreader provided by the invention, a mixture in front of the accessory screed plate can be effectively prevented from leaking into the main screed plate, thereby improving the paving quality of a road surface.

The invention discloses a plateau area asphalt pavement construction method and relates to the technical field of highway construction. The plateau area asphalt pavement construction method comprisesthe step of correspondingly arranging mobile wind break walls along the two sides of a construction pavement during constructing a plateau area asphalt pavement, wherein the length of the wall arranged on single side every time is not less than 200 m, the height of the wall arranged on single side every time is not less than 50 m, the bottom of the wall is in close contact with the ground, and thematerials of the mobile wind break walls are wind proof materials used for reducing temperature loss of asphalt mixture in the paving process. The specific construction method comprises the steps of(1) blending asphalt mixture, (2) transporting a mixed material, (3) paving the mixed material; and in the construction process, arranging the mobile wind break walls when the wind power reaches grade4 or above, and (4) rolling the mixed material. According to the plateau area asphalt pavement construction method, through adoption of the wind break walls, the temperature loss of the asphalt mixture can be reduced, and the asphalt pavement paving quality can be improved; and the plateau area asphalt pavement construction method is very suitable for severe construction environments with low temperature, high wind speed, low surface temperature and the like in plateau areas.

The invention relates to a pitch mixed material cracking resistance tester which is used for solving the problem of test detection of pitch mixed materials and comprises an environmental box, a fixed support seat, a sticking platform plate, a slide plate, a slide plate displacement loading mechanism, a spoke type sensor, a rotating coupling and a servo motor, wherein the fixed support seat is installed in the environmental box; the sticking platform plate is installed on the fixed support seat and touches and is connected with the slide plate in a movable fit way; the bottom of the slide plate is connected with the slide plate displacement loading mechanism; the slide plate displacement loading mechanism is connected with the servo motor by the rotating coupling, and the spoke type sensor is connected to a coupling disk of the rotating coupling; a side support seat of which the bearing is embedded into the environmental box is installed on the rotating coupling; and the servo motor is connected outside the side body of the environmental box. The invention has simple structure and simple and convenient use and is suitable for carrying out a cracking resistance test on various pitch mixed materials.

The invention discloses a bituminous pavement hot-in-place recycling paving device. The bituminous pavement hot-in-place recycling paving device comprises a vehicle body. A material receiving hopper is arranged at the front end of the vehicle body and connected with a material receiving box through a first scraper chain. A stirring paddle is arranged in the material receiving box. A double-layer paving device is arranged at the tail of the vehicle body and comprises a front material divider, a front ironing plate, a rear material divider and a rear ironing plate. The material receiving box is connected with the rear material divider through a second scraper chain. A heating plate is arranged at the bottom of the vehicle body. The vehicle body is provided with a combustion furnace, a hot air outlet of the combustion furnace is connected with the heating plate through a hot air conveying pipeline, and the hot air conveying pipeline is provided with a circulation draught fan. According to the bituminous pavement hot-in-place recycling paving device, upper face layers and lower face layers of fresh materials and reworked materials can be paved and constructed at the same time, a lower bearing layer of the bituminous pavement can be preheated, the bonding quality between the layers of the bituminous pavement is guaranteed, hot connection of transverse and longitudinal construction work lines can be achieved, and the paving quality of the bituminous pavement is greatly improved.

The invention discloses thickness-adjustable slurry spreading equipment. The thickness-adjustable slurry spreading equipment comprises a machine frame, a slurry storage cavity is formed in the middleof the machine frame, a slurry outlet is formed in the lower end of the slurry storage cavity, two supporting frames are correspondingly arranged at the two ends of the machine frame, tires are arranged on the supporting frames, a slurry spreading mechanism convenient to disassemble and assemble is arranged at the front end of the machine frame, a lifting mechanism for adjusting the height of theslurry spreading mechanism is arranged at the front end of the slurry spreading mechanism, and a slurry outlet mechanism for slurry outlet with the moving of the machine frame is arranged at the slurry outlet. The thickness-adjustable slurry spreading equipment has the beneficial effects that the distance between a slurry spreading plate and the ground is controlled, the slurry spreading thicknesses can be freely controlled, the thickness-adjustable slurry spreading equipment is suitable for working requirements of different slurry spreading thicknesses, and the operation steps of a user are simplified.

The invention relates to a thin-layer wrapper spreading device. A trapezoid scraper consisting of a large baffle, a baffle body and a small baffle is used for wrapping paste; a power switch is switched on, after an output shaft of a vertical motor passes through a decelerator, a driving shaft drives a screw rod fixing frame to rotate, and at the time, the scraper enables the paste to be automatically rotated and uniformly spread; a lateral motor drives a screw rod to rotate forwards, a sliding block slides in the forward direction of a sliding bar, and the paste in the scraper is completely spread for the first time in the circumferential direction; after the sliding block moves to the end part of the sliding bar, the lateral motor drives the screw rod to rotate backwards, the sliding block slides in the backward direction of the sliding bar, and the scraper is used for levelly spreading the paste on a pot surface for the second time; after the sliding block touches a touch switch on the sliding bar, the power switch is in power failure, and spreading of a wrapper once is completed, namely making the wrapper once is completed. Compared with a conventional device adopting a manual spreading manner, the device disclosed by the invention has the advantages that wrapper spreading speed is effectively promoted, and the wrapper molding quality is effectively improved; and the device is suitable for mass production, and has very high economic benefits.

The invention discloses an underdrainage pipeline construction technology process for municipal engineering and relates to the technical field of pipeline construction. The technology process comprises the following steps of measurement and line alignment of a drainage pipeline, foundation pit supporting, foundation pit processing, foundation construction and UPVC pipeline installation. Accordingto the underdrainage pipeline construction technology process, for rainwater and sewage, foundation pits are adopted and pipe pits are dug, the depth of the pits is 2-9 m, dense-arrangement deep-drawing steel plate piles are adopted for supporting the foundation pits, NO.30 groove steel is adopted for supporting top supporting horizontal supports, the length of the horizontal supports is higher than that of the space before being tightly piled and is kept within 2-6 cm, and accordingly the embedded supports are reasonably pressed; by adopting cooperation of mechanical soil digging and manual soil digging, it is guaranteed that soil at the bottoms of grooves cannot be damaged, during mechanical digging, the digging standard height of the pit is 20-30 cm, the flatness of the soil is checkedthree times after manual soil digging, and accordingly it is confirmed that digging is not excessively conducted; the construction technology is high in efficiency, the construction cost is low, the benefit is high, and the process has great promotion significance on increase of the level of municipal engineering construction in China.

The invention discloses a concrete pavement paving device and method based on a weaving mechanism. The paving device comprises a rack, a concrete feeding device, a horizontal vibrator and a vertical vibrator, wherein the rack horizontally moves from back to front in the pavement paving direction, and the concrete feeding device moves along with the rack; the horizontal vibrator is positioned above the front side of the rack, and the vertical vibrator is positioned above the rear side of the rack. The concrete feeding device is arranged in the wideness direction of a pavement. The paving method comprises the following steps: the rack horizontally moves from back to front in the pavement paving direction, and pavement anti-deformation structures are arranged on the base layer of the paved pavement from back to front in the moving process; in the process that the rack moves from back to front, the concrete feeding device continuously conveys concrete in the concrete feeding device onto the base layer of the pavement for paving in multiple paving stripes from back to front based on the weaving mechanism. The concrete pavement paving device has the advantages of reasonable design, simpleness and convenience in use and operation, high efficiency, energy saving, high paving quality and easiness in promotion and use and can solve various inherent contradictions and problems in sliding mode paving construction.

The invention discloses a telescopic paver, and belongs to the technical field of paving equipment. The paver comprises a telescopic cantilever beam and a paving part which moves and works along the telescopic cantilever beam. The telescopic cantilever beam comprises a main beam and extension beams arranged at the two ends of the main beam in a sleeving mode. A transmission part for enabling the extension beams to move is arranged between the extension beams and the main beam. The extension beams at the two ends are provided with walking parts. The upper end face of the telescopic cantilever beam is provided with a control part. The telescopic cantilever beam is provided with the main beam and the extension beams, and the extension beams move along the main beam, so that the length of thetelescopic cantilever beam is changed, the working stroke of the telescopic paver can be adjusted according to the actual condition of a construction site, and the application range of the telescopicpaver is expanded. Moving transmission between the paving support and the telescopic cantilever beam is achieved through the gear and rack transmission part, transmission of the gear and rack transmission part is stable, and the moving process between the paving support and the telescopic cantilever beam is stable. The paver is reasonable in structural arrangement, the use rate of the paver is increased, and the paver has good use performance.

A film tray paving mechanism for a self-propelled combined machine for raising rice seedlings in a greenhouse belongs to a special mechanism to support the use of the self-propelled combined machine for raising the rice seedlings in the greenhouse. The novel film tray paving mechanism for the self-propelled combined machine for raising the rice seedlings in the greenhouse comprises a folding forming part and a forming maintaining part, wherein the folding forming part comprises an underframe and an upper frame, and the forming maintaining part comprises a lower cage and an upper cage. The film tray paving mechanism for the self-propelled combined machine for raising the rice seedlings in the greenhouse has the beneficial effects that rice industrial greenhouse seedling-raising multi-groove integrated film tray films are folded into integrated groove strip-type bottom films when passing through a special film tray paving mechanism; mechanical film tray paving replaces manual film tray paving, so that the film tray paving quality is improved, and the working efficiency is also improved; the problems of labor wasting and high labor intensity are solved.

The invention relates to road engineering pavement asphalt paving equipment. The road engineering pavement asphalt paving equipment comprises a machine body, a support, a spiral feeding device and a flattening device, wherein the support is connected to the rear side of the machine body, the spiral feeding device extends in the left-right direction, the spiral feeding device is installed on the support and located behind the machine body, and asphalt flows down from the machine body and then is distributed to a road through the spiral feeding device. The flattening device comprises a carrier roller rod, a sleeve, a switch device, a conveying belt and a poking rod, wherein the spiral feeding device drives the carrier roller rod to rotate in a conveying mode, the switch device is configuredto enable the sleeve to be matched with the carrier roller rod when being touched by protruding asphalt so as to enable the carrier roller rod to drive the sleeve to rotate, the sleeve drives the conveying belt to rotate in a conveying mode, and the poking rod on the conveying belt flattens the protruding asphalt. According to the road engineering pavement asphalt paving equipment, accumulated asphalt can be automatically leveled inwards when the road engineering pavement asphalt paving equipment turns, so that the pavement paving quality is improved, and the manpower consumption is reduced. In addition, the road engineering pavement asphalt paving equipment adopts a pure mechanical structure and is more suitable for severe working environments such as high temperature and vibration.

The invention provides a paving width automatic control system of a paver. The system comprises a PLC program controller, a control output module and a width detection module, wherein the PLC program controller is connected with the control output module and the width detection module through a signal line. The PLC is used for controlling electromagnetic valves of the paving width of the paver in a concentrated way, the internal structure for adjusting width of the paver is simplified, the reliability of width adjustment is improved, different road construction requirements are satisfied, the road paving quality is improved, and the system has the advantages of convenience for installation and debugging.