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47 results about "Gravel road" patented technology
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A gravel road is a type of unpaved road surfaced with gravel that has been brought to the site from a quarry or stream bed. They are common in less-developed nations, and also in the rural areas of developed nations such as Canada and the United States. In New Zealand, and other Commonwealth countries, they may be known as 'metal roads'. They may be referred to as 'dirt roads' in common speech, but that term is used more for unimproved roads with no surface material added. If well constructed and maintained, a gravel road is an all-weather road.
Paving construction device capable of rubblizing and recycling municipal road surfaces
InactiveCN107700322AMeet the needs of maintenance and constructionReasonable structureRoads maintainenceArchitectural engineeringCrushed stone
The invention discloses a paving construction device for reuse of municipal pavement crushing treatment, which comprises a support frame, a buffer pad is installed at the lower end of the support frame, a running wheel is connected to the lower end of the buffer pad, a top plate is installed at the upper end of the support frame, and the upper end of the top plate is on the left side. A first motor is installed, the lower end of the first motor is connected with a first pulley, the right end of the first pulley is connected with a second pulley through a belt, the middle part of the lower end of the second pulley is connected with a first rotating shaft, and the middle part of the first rotating shaft is set There is a second rotating shaft, the upper end of the second rotating shaft is connected with the second motor, the first rotating shaft is equipped with a bottom plate, the rotating frame is installed on the upper end of the bottom plate, the rotating blade is installed outside the lower end of the second rotating shaft, and the right lower end of the right support frame There are fixed brackets installed. The present invention realizes the recycling of the original gravel on the pavement, reduces the processing cost of the original pavement, reduces the construction cost of the entire pavement, and avoids transporting the gravel of the original pavement out of the reconstruction area, so that the pavement can be re-paved .
Owner:金晶
Airport inspection robot multi-scene autonomous navigation positioning method
ActiveCN111006655AIncreased ability to operate autonomously over large areasReduce computing pressureNavigation by speed/acceleration measurementsSatellite radio beaconingEngineeringRoad surface
The invention discloses an airport wheeled inspection robot multi-scene autonomous navigation and positioning method. Visible light image information is collected through a camera, the pavement condition of a current scene is analyzed through target recognition, the open degree of the current scene is judged according to effective feature numbers extracted from images, the scene similarity is calculated through comparison of adjacent key frames, and the three points serve as the basis for selection of the navigation and positioning method of the inspection robot; when the open degree is high and the road surface is a standard road surface, a differential GPS and encoder combined visual autonomous navigation positioning method is adopted; when the open degree is high and the road surface isa gravel road surface, an autonomous navigation and positioning mode of combining a GPS with vision, an IMU and an encoder is adopted; and when the scene open degree is relatively low and the similarity is relatively low, a visual SLAM autonomous navigation positioning mode is adopted. The environment adaptability of the robot is improved, the defect of fusion of a large number of sensors is reduced, and the calculation pressure of a robot control system is reduced.
Owner:NANJING UNIV OF SCI & TECH
Transporting equipment of stones for repairing road
The invention relates to a transportation device, in particular to a stone transportation device for road repair. The technical problem to be solved by the present invention is to provide a stone transportation device for road repairing which is convenient for pouring out stones and will not leave stones remaining. In order to solve the above technical problems, the present invention provides such a road repairing stone transportation equipment, including a vehicle body, etc.; the bottom of the vehicle body is provided with wheels symmetrically on the left and right, the bottom of the vehicle body is connected with a frame body through a lifting device, and the right wall of the frame body is There is a discharge device on the top, and a T-shaped push rod on the upper left side of the car body. In the present invention, the left part of the frame body is lifted by the lifting device, so that the stones in the frame body are discharged through the discharging device.
Owner:刘一琛
Discrete element and finite element mixed road surface sample model based gravel road replacement method
InactiveCN105868500AReduce computational efficiencyGuaranteed accuracyDesign optimisation/simulationSpecial data processing applicationsInternal memoryTweel
A discrete element and finite element mixed road surface sample model based gravel road replacement method mainly includes: adopting a discrete unit for describing a gravel road surface in a ground contact area of a tire and a neighboring area of the ground contact area of the tire to obtain a discrete element sample road surface; adopting a finite unit for describing a gravel road surface which is close to the ground contact area of the tire and in possibly potential evident deformation but avoids damages to obtain a finite element sample road surface; adopting the discrete element sample road surface and the finite element sample road surface to generate a mixed sample road surface; storing information of the mixed sample road surface into an internal memory of a computer; doubly duplicating the mixed sample road surface to sequentially form an initial road surface for wheels to run on; when a running distance of the wheels is equal to a mixed road surface sample length, deleting a first road surface sample block while paving a same mixed sample road surface in a wheel running direction. The method has the advantages that calculation efficiency can be remarkably improved on the premise of guarantee of precision and is significant to researches on trafficability of sport utility vehicles running on large-scale gravel roads.
Owner:SOUTH CHINA UNIV OF TECH
Semi-rigid building solid waste self-curing roadbed and preparation method and application thereof
ActiveCN111499318AImprove performanceReduce crackingRoadwaysSolid waste managementSuper absorbentStructural engineering
The invention relates to the technical field of self-curing roadbeds, in particular to a semi-rigid building solid waste self-curing roadbed and a preparation method and application thereof. The self-curing roadbed comprises the following components in percentage by mass: 4-12% of cement, 20-70% of recycled aggregate, 20-70% of gravels, 4-10% of lime, 0.6-1.2 kg / m<3> of matrix fiber reinforcements, 0.2-1 kg / m<3> of super absorbent resin and 0.2-1 kg / m<3> of water-absorbing cellulose fibers. The preparation method of the recycled aggregate comprises the following steps: crushing waste concreteto form an aggregate precursor, stirring the aggregate precursor in a grinding device without a grinding body, and pre-wetting the obtained aggregate to obtain the recycled aggregate. According to theinvention, particles and corners which are easy to fall off are removed through mechanical activation, so the performance of the recycled aggregate is improved. Meanwhile, the aggregate is pre-wettedby utilizing the porous water absorption characteristic of the recycled aggregate, so cracking of the cement stabilized macadam roadbed can be reduced.
Owner:SHANDONG UNIV +3
Cement stabilized macadam base construction method
PendingCN112482119AAccurate connectionAvoid horizontal expansionRoads maintainenceArchitectural engineeringStructural engineering
The invention relates to a cement stabilized macadam base construction method. The method comprises the following steps: S1, preparing a roadbed; S2, surveying and setting out; S3, installing an edgeprotection side form; S4, paving a cement and macadam mixture; S5, performing compaction; and S6, maintaining. The construction method has the effects that the quality of the cement macadam roadbed slope is guaranteed, and the quality of the constructed cement macadam roadbed is guaranteed.
Owner:LANHAI CONSTR GRP CO LTD
Anti-cracking asphalt concrete composite pavement structure
InactiveCN111945507AHigh strengthAvoid crackingPaving reinforcementsIn situ pavingsCrack resistanceRoad surface
The invention relates to the technical field of road construction, and discloses an anti-cracking asphalt concrete composite pavement structure. The pavement structure comprises a macadam roadbed layer, a supporting layer flatly laid on the macadam roadbed layer, a concrete layer flatly laid on the supporting layer and a pavement layer flatly laid on the concrete layer. The supporting layer comprises a steel frame horizontally placed above the gravel roadbed layer and a plurality of supporting rods horizontally arranged in the steel frame, the two ends of each supporting rod are fixedly connected with the steel frame, and the height of the supporting rods is equal to that of the frames. The asphalt concrete composite pavement structure has excellent loading performance and cracking resistance, so that the service life of an asphalt concrete pavement is prolonged.
Owner:胡明华
Glue used in gravel road paving, and application method thereof
The invention discloses a glue used in gravel road paving, and an application method thereof. The glue is composed of a polyurethane material A and a polyurethane material B according to a weight ratio of 5:4. The polyurethane material A comprises, by weight, 70% of trihydroxy polyether 330N, 10% of vinyl-polymer-grafted polyether polyol POP36 / 30, and 20% of polyether GE-305. The polyurethane material B comprises, by weight, 50-60% of 4,4'-diphenyl methane diisocyanate, and 40-50% of hydrogenated diphenyl methane diisocyanate. The application method comprises the following steps: gravels used for paving are placed in a stirring tank; the glue is prepared, and is well mixed with the gravels; and the mixture is used for paving a road. According to the invention, the glue provided by the invention is used for paving a gravel road, such that the pavement has high porosity, and the pavement can be dried fast when wet. The glue is odorless and dust-free. With the glue, construction is simple and highly efficient. With the glue, the pavement has good shock-absorption performance and better freezing and thawing resistances.
Owner:DONGGUAN LYUBAINENG CEMENTING COMPOUND CO LTD
Gravel roadbed construction equipment
InactiveCN112323579AImprove work efficiencyShock frequency reducedRoads maintainenceReciprocating motionArchitectural engineering
The invention relates to the technical field of pavement construction, in particular to gravel roadbed construction equipment which comprises a machine body, a hopper arranged on the machine body andused for containing macadam and a plurality of wheels rotationally arranged on the machine body, a discharging opening is formed in the bottom of the hopper, and the discharging opening communicates with a plurality of discharging pipes. The machine body is provided with a pressing plate used for compacting gravels, and the machine body is provided with a driving assembly used for driving the pressing plate to do reciprocating motion in the direction perpendicular to the road surface. The construction equipment has the effect of improving the construction efficiency.
Owner:广东宏骏建筑工程有限公司
Caterpillar band type vibration rolling device used for gravel road section
The invention relates to the technical field of road construction equipment, in particular to a caterpillar band type vibration rolling device used for a gravel road section. The caterpillar band typevibration rolling device aims at solving the technical problem that an existing road roller is poor in rolling effect. In order to solve the above technical problem, the caterpillar band type vibration rolling device used for the gravel road section is provided and comprises a case, side boards are fixedly connected to the two sides of the case, each side board is of a hollow structure, shaft rods are inserted in through grooves formed in the bottoms of the side boards and sleeved with solid rolling wheels, the bottoms of the side surfaces of the solid rolling wheels are exposed below the through grooves, and a vibration transmission mechanism is arranged in the case. Gravity pressure relief balls and hollow balls are arranged in a double-layer caterpillar band so that the compactness ofthe double-layer caterpillar band can be improved; in the rolling process, the acting force on gravel can be improved; and in the rolling process, the double-layer caterpillar band has certain rebounding force after bearing impact force, and the gravel can be secondarily impacted.
Owner:山东远通公路工程集团有限公司
Novel dry-type stoping method for tailings in tailing pond
ActiveCN105952449AImprove recovery speedShorten the mining periodUnderground miningPaving gutters/kerbsStopped workChipseal
The invention discloses a novel dry-type stoping method for tailings in a tailing pond. The tailing pond is investigated, gravels are used for laying of temporary gravel roads (1) from tailing pond dam bodies to a tailing pond drainage well (2), and the temporary gravel roads (1) are taken as temporary construction roads; temporary drainage ditches are dug on two sides of each road by means of mechanical digging equipment; to-be-stoped tailings under tailing pond beaches (3) on two sides of each temporary gravel road (1) are dug in each area by means of a digging machine after water accumulated in the tailing pond is drained off; after stoping in one area is finished, stoping is performed in another area until the tailings in all the areas on the layer are stoped; tailings on two sides of each temporary gravel road on a lower layer are dug in each area until tailings in the tailing pond are all exploited. The stoping work of the tailings in the tailing pond is finished on a large scale quickly and efficiently, the stoping efficiency of the tailings in the tailing pond is improved, the stoping cost is reduced, and the stoping time is saved.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES
Preparation method of elastic gravel road surface of garden
ActiveCN109763394AIncrease elasticityImprove toughnessIn situ pavingsRoads maintainenceFiberRoad surface
The invention discloses a preparation method of an elastic gravel road surface of a garden. The preparation method of the elastic gravel road surface of the garden comprises the following steps: arranging a road groove with the depth of 20-30 cm, laying a layer of marble with the grain size of 6-10 cm, pouring mortar on the marble, and standing for 3-5 days to form a roadbed after the mortar is solidified. An elastic gravel layer comprises mica gravels and colloidal substances, the mica gravels and the colloidal substances are fully mixed, stirred at the temperature of 150-200 DEG C and pouredon the roadbed. The gravels are not easily separated from the road surface to form free gravels in a using process, meanwhile, the toughness of the rubber can be improved by plant fibers, thus, the road surface is elastic, and people feel comfortable when stepping on the road surface.
Owner:HUAYI ECOLOGICAL LANDSCAPE ARCHITECTURE
Plant macadam pavement and its construction method
ActiveCN1544757AHigh activityImprove road bearing capacityIn situ pavingsHorticultureSurface layerChipseal
The invention relates to a plant gravel road surface, and its characteristic: the road surface has two layers, the base layer has step-distributed gravels and the surface layer has gravels and plant earth mixture where the surface layer is composed of set-distributed gravels, plant earth mixture, grass seeds and water in weight percents of 80-88%, 6-18%, 0.1-1% and 5-13%, respectively, the base layer is 10-30 cm thick and the surface layer is 10-25 cm thick. It has 100% of greening rate and higher bearing capacity of road surface, suitable for park, square road surface and footway road surface. It has good water permeability, low thermal radiation, natural environmental protection, etc. it has the advantages of simple structure, low cost, quick field construction, and short time.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
High-heeled shoes capable of being freely adjusted in height and disassembled
Disclosed are high-heeled shoes capable of being freely adjusted in height and disassembled. Each high-heeled shoe includes a high-heeled shoe body assembly and a heel assembly; each high-heeled shoebody assembly includes a high-heeled shoe body and a decompression layer, the high-heeled shoe bodies are used for supporting the human body, the decompression layers are arranged on the high-heeled shoe bodies and used for relieving aching pain on heel parts when a person wears high-heeled shoes for a long time, the side surfaces, away from the high-heeled shoe bodies, of the decompression layersare provided with threaded hole parts, and the threaded hole parts are used for connecting the high-heeled shoe body assemblies with the heel assemblies; each heel assembly comprises a heel body, a rotating adjustment piece and a threaded rotating rod piece, the rotating adjustment pieces are used for adjusting the height of the high-heeled shoes capable of being freely adjusted in height and disassembled, the threaded rotating rod pieces penetrate through the heel bodies and used for connecting the high-heeled shoe body assemblies with the heel assemblies, the height of the high-heeled shoescapable of being freely adjusted in height and disassembled can be freely adjusted to adapt to different user groups, heels can be disassembled so that people wearing the high-heeled shoes can walk on gravel roads and people driving cars can conveniently drive the cars.
Owner:邓贺
Road roadbed foundation bed long-term power stability evaluation system
The invention discloses a road roadbed foundation bed long-term power stability evaluation system. A supersonic wave detection device is arranged on a right guardrail, a right side of the right guardrail is connected with a stability evaluation system display device, a left lower side and a right lower side of the right guardrail are provided with cable slots, a left lower side of a left guardrail is provided with a supporting rod, the supporting rod is provided with a high definition rotation data camera, the supporting rod is inserted into the road roadbed to realize fixed connection of the supporting rod and the road roadbed, the road roadbed comprises an asphalt concrete layer, a gravel road slag layer, a surface sand structure layer, a polyethylene soft plate layer and a bottom sand structure layer, a bottom portion of the asphalt concrete layer is provided with the gravel road slag layer, a bottom portion of the gravel road slag layer is connected with the surface sand structure layer, a bottom portion of the surface sand structure layer is provided with the polyethylene soft plate layer, and a bottom portion of the polyethylene soft plate layer is connected with the bottom sand structure layer. The system is advantaged in that the road roadbed is determined and evaluated through designing the stability evaluation system display device, intelligentization is realized, the structure is simple, and the system is simple for realization.
Owner:梁志华
Method for applying road waste inorganic stable material to concrete through regeneration
ActiveCN102320786ASolve the use problemSolve pollutionSolid waste managementCrushed stoneEnvironmental engineering
The invention relates to the technical field of recycling of roadbase material solid wastes and provides a method for applying a road waste inorganic stable material to concrete through regeneration. The method comprises the following steps of: crushing a cement stabilized broken stone road surface layer and a lime-flyash layer which are recycled after the road surface is broken by using a crushing machine; performing classified screening on a classifying screen to obtain graded broken stones; and mixing the graded broken stones, cement, water, core shell latex and nano core shell rubber particles uniformly in a certain weight ratio to obtain concrete with different models. By the method, the conventional inorganic stabilized materials can be utilized; the utilization rate is over 90 percent; and wastes are changed into treasures. Sources are wide, the method is simple, high in utilization rate and low-carbon and environment-friendly, resources are saved, and environment is protected.The core shell latex and the nano core shell rubber particles are added, so the construction time of the concrete can be prolonged, and the strength and the impermeability can be improved. No specialrequirement on equipment is provided and operability is high.
Owner:济南市城建材料开发服务中心
Experimental method for stone impact prevention performance of rubble road and whole vehicle
InactiveCN114166521AGuaranteed accuracyAssessing stone chip resistanceShock testingVehicle shock testingCrushed stoneStructural engineering
The invention discloses a rubble road and whole vehicle stone impact prevention performance experiment method, the rubble road comprises a rubble road section, a deceleration road section and a cleaning road section which are connected in sequence, the rubble road section comprises a first curve, a second curve, a transition curve and a straight road which are connected in sequence, and the first curve and the second curve are opposite in turning direction. A rubble layer with the thickness of 10 cm is laid on the rubble road section, and the rubble layer comprises stones with the particle size of 3-8 mm; the deceleration road section is not paved with a gravel layer and is used for vehicle deceleration; a plurality of cleaning grids are arranged on the cleaning road section at intervals and used for cleaning broken stones on the wheels. The method is closer to the actual situation when the stone impact resistance of the vehicle is evaluated, and the influence of stone impact on the appearance and performance of the vehicle is accurately predicted.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
High-strength steel fiber concrete pavement structure for high-tonnage automobile and construction method
ActiveCN102561139AImprove structural strengthImprove wear resistanceIn situ pavingsRoads maintainenceCrushed stoneRoad surface
The invention relates to a high-strength steel fiber concrete pavement structure for high-tonnage automobiles and a construction method. The high-strength steel fiber concrete pavement structure is characterized in that the high-strength steel fiber concrete pavement structure sequentially comprises a weathered rock subgrade, a subgrade reinforcing grout, a cement-stabilized gravel connecting layer and a steel fiber concrete surface layer from bottom to top. The construction method of the high-strength steel fiber concrete pavement structure comprises the steps of: a) cleaning and tamping the weathered rock subgrade; b) using the subgrade reinforcing grout for reinforcing the weathered rock subgrade, wherein the thickness is 5-10cm and the embedding depth is 2-3cm; c) spreading the cement-stabilized gravel connecting layer, wherein the thickness is 40-60cm, and then tamping; d) spreading the steel fiber concrete surface layer, wherein the thickness is 40-60cm; and e) curing and obtaining the finished product. By using the steel fiber concrete pavement structure for replacing the original clay-bound and graded gravel pavement, the expansion of micro-cracks in concrete and the formation of macro-cracks are effectively avoided, the tensile strength, the bending resistance, the impact resistance and the fatigue resistance of the concrete are obviously improved and the ductility is better.
Owner:ANSTEEL GRP MINING CO LTD
A water-bound gravel paving device for road construction
ActiveCN107687123BSuitable for laying requirementsLaying high qualityRoads maintainenceArchitectural engineeringStructural engineering
Owner:台州贝蕾丝电子商务有限公司
Bagged gravel fence construction method
InactiveCN111851533AReduce widthReduce in quantityFoundation testingExcavationsCrushed stoneStructural engineering
The invention discloses a bagged gravel fence construction method. The bagged sand fence construction method comprises the following steps of S1, preparing bagged gravel, i.e., filling a bag with a filler, wherein the filler comprises at least one of soil, sand and gravel; S2, transporting the bagged gravel to a place close to a collapsed position; S3, leveling the bottom of a collapsed gap, transporting the bagged gravel to the collapsed gap, hierarchically stacking the bagged gravel on the slope toe of a collapsed slope line from bottom to top in a staggered way, and gradually leveling the slope; S4, when the bagged gravel is refilled to the original road side, paving one layer of cemented gravel pavement to obtain a new pavement; and S5, arranging a row of anchoring piles on the side, close to the bottom of the slope toe of an original roadbed slope line, of the bagged gravel. The construction method is suitable for first-aid repairing of a collapsed road segment which is high and steep in the inner side and is not liable to refill, and has the advantages of easiness and rapidness in construction.
Owner:四川省交通勘察设计研究院有限公司
Ground erection construction method for oil-gas pipeline engineering in freeze soil area and under low-temperature condition
InactiveCN111473157AReduce meltingPrevent frost heave problemsPipe laying and repairThermal insulationGelisolPipe welding
The invention provides a ground erection construction method for oil-gas pipeline engineering in a freeze soil area and under a low-temperature condition, and relates to the technical field of erection construction for oil-gas pipelines. The ground erection construction method for the oil-gas pipeline engineering in the freeze soil area and under the low-temperature condition comprises the following steps: S1, preparation before construction; S2, cleaning for a construction working zone and building for a gravel road construction road; S3, erection for a support frame; S4, cleaning and grinding for a pipe port; S5, pipeline welding; and S6, heat-insulation treatment for the pipeline. According to the ground erection construction method for the oil-gas pipeline engineering in the freeze soil area and under the low-temperature condition, a low-temperature anchoring method is adopted, the low-temperature anchoring method is adopted for a pipe pile, a lower-part foundation soil of the pipepile is frozen into a large spheroid by a heat pipe, and large friction is generated between the pipe pile and permafrost; and in this way, the pipe pile cannot be lifted and sunken, the foundation soil in the vicinity of the pipe pile starts to be frozen before other places in winter, and then radially frozen towards the surrounding, and therefore, the lifting function is lost, and the thaw collapse of the pipeline is reduced.
Owner:NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
A park gravel road laying equipment
ActiveCN109629376BEasy to useEasy to moveRoads maintainenceArchitectural engineeringStructural engineering
Owner:金华市极致纸品有限公司
Special material for highway, slope protection and water channel produced by using sandstone shale and its manufacturing method
The invention provides a sandstone-shale-produced material special for a road, a slope protection and a canal as well as a manufacturing method of the material. Sandstones, coal slime and limestone raw materials are processed to be tiny fine powder, and then mixed uniformly according to a specified proportion; the fine powder is flattened in a firing mold and is once and integrally fired in a high-temperature firing furnace for cooling molding. The manufacturing method comprises the follow steps: preparing raw materials, distributing the materials, firing, and cold machining to obtain finished products. The material special for the road, the slope protection and the canal, which is produced by taking sandstone and coal slime as the raw materials, has the advantages that the environment pollution problem is solved, the production cost is reduced, the utilization rate of the resource is increased, the waste is changed into the wealth, and the environment is optimized; by taking the coal slime as the raw material, a combustion supporting effect of raw material self combustion in a firing procedure is realized, the firing speed can be increased, and the fuel cost and the energy consumption are reduced.
Owner:NINGXIA BLACK GOLD TECH CO LTD
Cement mortar stabilized crushed stone pavement base mixture and construction method thereof
ActiveCN105819784BReduce crackingHigh gravel contentIn situ pavingsSolid waste managementChipsealMixed materials
The invention provides a cement motor mixed material for stabilizing macadam pavement base and a construction method thereof. The mixed material comprises 70 to 90 parts by weight of macadam mixed material with a particle size of 4.75 to 37.5 mm and 10 to 30 parts of cement mortar; wherein the cement mortar is composed of aggregate, cement and water, the water / aggregate ratio is 5 to 12%, the cement / aggregate ratio is 15 to 30%, the water / aggregate ratio represents the mass percentage of water / aggregate, and the cement / aggregate ratio represents the mass percentage of cement / aggregate. The mixed material has the advantages that the construction technology is simple, the used mechanical equipment is small, less mechanical equipment is used; the used materials are common, a compact skeleton can be formed without precisely controlling the using amount of raw materials, and the technology is easy to master, is very matured, and is easy to popularize and use. The provided mixed material and construction method solve the problem that due to the insufficient or excess filling of gap in macadam skeleton, a skeleton is not compact or a skeleton cannot be formed; and can guarantee that pavement base forms a compact skeleton structure, so the cracks are reduced, and the quality and service life of roads are ensured.
Owner:王壹帆
A garden gravel road laying robot
The invention discloses a garden gravel road laying robot, which includes an installation platform, a gravel paving mechanism, a walking mechanism, a gravel barrel, a flattening structure, a worm drive motor, a worm, an optical axis fixing seat, an optical axis driving gear, an optical axis, and a rotating base , buffer spring, feeding trough, and the installation platform is the installation platform of the gravel bucket, and it is also the installation platform of the stone paving mechanism, walking mechanism and flattening structure. The present invention can use the stone laying mechanism to lay the stones to be laid autonomously, and can lay stone roads with different patterns.
Owner:中科育成科技服务(盐城)有限公司
High-strength steel fiber concrete pavement structure for high-tonnage automobile and construction method
ActiveCN102561139BImprove structural strengthImprove wear resistanceIn situ pavingsRoads maintainenceCrushed stoneRoad surface
The invention relates to a high-strength steel fiber concrete pavement structure for high-tonnage automobiles and a construction method. The high-strength steel fiber concrete pavement structure is characterized in that the high-strength steel fiber concrete pavement structure sequentially comprises a weathered rock subgrade, a subgrade reinforcing grout, a cement-stabilized gravel connecting layer and a steel fiber concrete surface layer from bottom to top. The construction method of the high-strength steel fiber concrete pavement structure comprises the steps of: a) cleaning and tamping the weathered rock subgrade; b) using the subgrade reinforcing grout for reinforcing the weathered rock subgrade, wherein the thickness is 5-10cm and the embedding depth is 2-3cm; c) spreading the cement-stabilized gravel connecting layer, wherein the thickness is 40-60cm, and then tamping; d) spreading the steel fiber concrete surface layer, wherein the thickness is 40-60cm; and e) curing and obtaining the finished product. By using the steel fiber concrete pavement structure for replacing the original clay-bound and graded gravel pavement, the expansion of micro-cracks in concrete and the formation of macro-cracks are effectively avoided, the tensile strength, the bending resistance, the impact resistance and the fatigue resistance of the concrete are obviously improved and the ductility is better.
Owner:ANSTEEL GRP MINING CO LTD
Hammer paving device for mutual conversion of mechanical energy and elastic potential energy
Owner:嘉兴市瑞鑫塑业有限公司
Construction machinery for crushing gravel pavement on construction site
The invention discloses an engineering machine for crushing a macadam pavement on a construction site. The engineering machine is a crusher, the crusher is provided with a vehicle frame, the inner portion of the vehicle frame is hinged with a first drill rod and a second drill rod, the drill rods are connected with driving wheels through connecting rods, a rotating shaft of the first driving wheelis rotatably arranged on a first fixing rod, the first driving wheel performs driving rotation through a first belt connected with a first motor, one end of a first driving rod is hinged to the firstdrill rod, the other end of the first driving rod is connected to one end of a rotating water sprinkler, a second driving wheel performs driving rotation through a second belt connected with a secondmotor, one end of a second driving rod is hinged to the second drill rod, the other end of the second driving rod is connected with the other end of the rotating water sprinkler, the rotating water sprinkler rotates under driving of the first driving rod and second driving rod, and water in the rotating water sprinkler is sprayed outwards under the action of centrifugal force. The engineering machine for crushing the macadam pavement on the construction site has the advantages that the size is small, and the engineering machine enters the construction site to work conveniently. The inventionfurther provides a linked sprinkling device, which can effectively and directly suppress dust on the crushed lower portion.
Owner:QINGDAO HAIDE ROAD & BRIDGE ENG
Method of treating rock piles by surface grouting and vibratory compacting
InactiveCN112144339AImprove locking forceImprove bearing capacityRoads maintainenceCrushed stonePressure grouting
The invention discloses a method of treating rock piles by surface grouting and vibratory compacting. The method comprises the following steps of S1, excavating macadam blocks in a to-be-treated depthrange in a roadbed range, wherein the roadbed is placed among the plurality of rock piles; and S2, filling the roadbed in layers from bottom to top gradually: S21, performing surface non-pressure grouting and vibratory compacting to form a grouting layer successively; S22, back-filling the grouting layer with the macadam blocks to form a rockfill layer; and S23, repeating the steps S21 and S22 till filling is accomplished. The method can be used for reducing the voidage of the roadbed and improving the bearing capacity and the rebound modulus and is lower than replacement filling and fillinggrouting in cost.
Owner:四川省交通勘察设计研究院有限公司
Automatic Control System of Road Crusher
ActiveCN103301927BRealize constant power automatic controlImprove reliabilityGrain treatmentsFrequency changerHuman–machine interface
The invention discloses an automatic control system of a road crusher. The automatic control system comprises an on-site process control level, wherein the on-site process control level comprises a PLC (Programmable Logic Controller), a touch screen connected with the PLC, a crusher, a motor connected with the crusher, a displacement sensor, a temperature transmitter, a pressure transmitter, a power transmitter, a solenoid valve, a hydraulic system, a frequency converter and an ore feeding motor. The on-site process control level uses the PLC as a core controller, uses the touch screen as a man-machine interface, and uses the displacement sensor to detect an ore discharge port of the crusher, uses the temperature transmitter to detect the temperature of lubricating oil, uses the pressure transmitter to detect the pressure of an oil cylinder, and uses the power transmitter to detect the power of a drive motor, and the PLC outputs a certain control amount according to a control model on the basis of acquired data; the rotating speed of the ore feeding motor is adjusted by the frequency converter, and the size of the ore discharge port is adjusted by the solenoid valve of the hydraulic system, and finally, the control object that the power of a main motor is constant is achieved.
Owner:湖州南浔双程建设发展有限公司
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