75results about "Roads maintainence" patented technology

A covering unit for use in combination with similar units for covering a surface with a natural random look, the unit having an hexagonal body comprising first, second and third pairs of opposed and parallel sides. Each side has a central point of angular symmetry. The second and third pairs are similar to each other while the first pair is different from the others. The sides of the second and third pairs are provided with at least one split deviation along their length arranged so that each side of the second pair is a rotational image of the sides of the third pair, whereby in use in combination with other covering units: each side is matingly engageable with the sides of an equivalent pair of a neighbouring unit; and the unit has a central point of angular symmetry and is matingly engageable with a plurality of neighbouring unit.

In one aspect of the invention, a system for removing a layer of a paved surface comprises a vehicle adapted to traverse a paved surface in a selected direction. The vehicle also comprises a milling drum with an axle connected to the vehicle, the drum being adapted to rotate around the axle substantially normal the selected direction. A moldboard is positioned rearward of the milling drum and also connected to the vehicle. A plurality of nozzles is disposed proximate a bottom end of the moldboard and is in communication with a fluid reservoir through a fluid pathway and the plurality of nozzles is adapted to move independent of the moldboard.

A vehicle-attached lifting device and tool support is provided. The device comprises a dual-rail frame supported in an upright configuration by the vehicle tow hitch, wherein an internal subassembly support frame is positioned between the rails for the purposes of supporting different lifting and tool support subassemblies. Along the sides of the upright frame is a pair of ground support members that extend downward towards the ground to support the frame during operation, preventing the load from compressing the vehicle suspension or damaging the same. A winch controls the vertical positioning of the support frame within the dual-rail frame, which controls the position of a lifting or tool support subassembly. Many subassemblies are contemplated for use with the present invention for the purposes of assisting a user without requiring manual input therefrom. The device can also adjust with relation to the vehicle using different trailer hitch attachments.

The invention discloses an asphalt pavement leveling device. The device comprises a base, four wheels are fixedly mounted at the bottom of the base in a mode that every two wheels are symmetrical, a battery is fixedly mounted at one side of the top surface of the base, a storage bucket is fixed in the center of the top surface of the base, a pressure pump is arranged between the storage bucket andthe battery and mounted on the top surface of the base, and a guide pipe is fixedly connected to a material suction port of the pressure pump. The device has the advantages that through the arrangement of an idler wheel and a square rod, when the device meets a raised road surface, automatic pressing can be achieved to turn on and turn off a switch, and therefore the purpose of automatically damaging the raised road surface is effectively achieved accordingly; meanwhile, through the arrangement of a drum, a collecting box and a dust collector, crushed asphalt granules and debris can be effectively collected, and therefore the cleanliness of road surface construction can be effectively ensured accordingly; moreover, since the device has the functions of crushing, sweeping, filling, leveling and the like and effectively integrates various working processes together, the device can complete the road surface leveling work at one time, and the working efficiency is improved.

The invention discloses an asphalt pavement prefabricated block and a construction method for a prefabricated asphalt pavement. The asphalt pavement prefabricated block is characterized by comprising a base plate (1), an adhesive layer (2) on the plate and an asphalt surface layer (3) from bottom to top; and the asphalt pavement prefabricated block is cuboid, one side length of the bottom is 5 to 20 meters, and the other side length of the bottom is 1 to 20 meters. The asphalt bottom is reinforced by adopting the base plate which has a thermal expansion coefficient close to those of cement concrete and a steel plate and is made of fiber reinforced composite material, so that the fatigue resistance and the reflection crack resistance of the asphalt surface layer are improved; rainwater is effectively prevented from seeping from the asphalt surface layer to corrode a lower bearing layer; and through the prefabricated block, the rigidity of a steel bridge floor can be improved, and particularly the steel bridge floor with insufficient steel plate thickness can be reinforced, so that the thickness of the asphalt surface layer is reduced, and damage such as cracking, falling and the like of the asphalt paved layer due to insufficient rigidity of the steel bridge floor is avoided.

The invention discloses a multipurpose vehicle-mounted ground milling machine which comprises a motor-driven vehicle, milling machine tools, a dust collector, a hydraulic pressure station, a generator set and a connecting mechanism; the milling machine carries out the walking mechanization road maintenance by arranging a group of autorotation and revolution milling tools at the front end of the motor-driven vehicle, driving the milling machine tools for milling with a speed reducer, adjusting the milling depth with an elevating machine and a connecting rod adjustment mechanism, and driving the milling machine tools with the vehicle. The machine is not only used for clearing away freezing rain and snow, but also can be used for removing laitance on the ground and marker lines, carries out operations such as chiselling and the like, and has the advantages of simple structure, convenient operation, good clearing effect and high working efficiency.

The invention relates to a bituminous pavement track field evaluation method which comprises the following steps: A, performing field track survey, namely (1) selecting a road section to be evaluated; (2) testing the track depth; and B, calculating and settling the measurement result: (1) drawing a cross-section profile and a top datum line of each lane on the section line according to a ratio of 1:1; (2) determining the track depths D1 and D2 on the drawings, and reading to 1mm, wherein the maximum value serves as the maximum track depth of the section; (3) working out the mean value of the maximum track depth of each measured section to serve as the mean track depth of the evaluated road section; (4) determining the track deformation area of each section by employing a grid method, and determining the track deformation area of the evaluated road section through a formula; and (5) calculating the track repair engineering quantity between certain adjacent sections through the formula Vi+1=(Ai+Ai+1)*Di+1/2, and calculating the repair engineering quantity of the whole road section. The field track diseases can be objectively evaluated and reliable basis is provided for determining the track maintenance and repair engineering quantity.

The invention relates to water spraying equipment and particularly relates to water spraying equipment for concrete pavement maintenance. The invention aims at providing water spraying equipment for concrete pavement maintenance and with high water-spraying efficiency and uniform spraying. In order to solve the technical problem, the invention provides the water spraying equipment for concrete pavement maintenance. The water spraying equipment comprises a cart and a vertical plate and the like, wherein the vertical plate is connected with the right side of the top part of a cart plate of the cart; a driving device is arranged at the middle of the bottom of the cart plate of the cart; a water spraying device is arranged at the middle of the top part of the cart plate of the cart; the driving device is matched with the water spraying device. The water spraying equipment has the advantages that the water spraying equipment is pushed to move and drive the running of the driving device, sothat the water spraying device and a swinging device are driven to run; due to arrangement of the swinging device, the water spraying range of the water spraying device is wider, and the spraying is more uniform, so that the effects of high water-spraying efficiency and uniform spraying are achieved.

Control of running conditions, and particularly physical parameters of tires are recommended to increase automobile safety. A sensor according to the invention is used to determine various factors such as the temperature or pressure of tires. The sensor is a hybrid resonant passive structure that may be integrated in the vehicle ground connection, and particularly in the rubber of the tire when it is manufactured.

To provide a cement manufacturing apparatus and the like capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range. The cement manufacturing apparatus and the like comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker. The removal means may simultaneously remove unburned carbon contained in gypsum and unburned carbon contained in fly ash.

The invention relates to a marking device and particularly relates to a marking device for construction of a construction site. A technical problem to be solved by the invention is to provide the marking device for construction of the construction site, which can automatically mark, and is good in marking effect and simple to operate. The line marking device for construction of the construction site comprises a supporting plate, wheels which are rotationally arranged on the periphery of the bottom of the supporting plate; a push handle which is arranged on one side of the top of the supporting plate; a material carrying frame which is arranged in the middle of the supporting plate; a discharging assembly which is arranged on the lower side of the material carrying frame; and a driving assembly which is arranged on one side of the bottom of the supporting plate. The marking device is advantaged in that lime powder is placed in the material carrying frame by people, then a push handle is pushed forwards, under transmission, a first clamping block and a material blocking plate can be driven to move backwards, and under the action of gravity, the lime powder can fall down to the ground, so people carry out ground marking work.

The invention relates to a paving screed for a paver, with a basic screed and with at least one lateral extendable screed part which is connected to the basic screed via hydraulically actuable tensioners and the height of which can be adjusted by means of a height setting device which comprises vertical spindles which are coupled to the extendable screed part and are held on the basic screed rotatably relative to the latter, the spindles being adjustable via a common drive motor, it being possible, as a result of the actuation of the drive motor, to trigger a release of the hydraulically actuable tensioners for the duration of actuation and the extendable screed part being additionally connected to the basic screed via spring-biased screws.

Manually trowelling floor toppings, such as aggregate decorative stone, can be labor-intensive and costly. The present disclosure includes a power rotary trowel that includes a hub rotatably attached to an electric motor via a swivel. A plurality of arms extend from the hub, and a trowel blade assembly is attached to each of the arms. The trowel blade assemblies support an operating weight that includes, at least, a weight of the hub, the arms, the electric motor, the swivel and the trowel blade assemblies. A ratio of the operating weight to a combined trowel blade assembly length is less than 1.3 pounds per inch.

The invention relates to the field of road equipment, especially to an asphalt pavement repairing machine, which comprises a machine body and an asphalt cavity formed in the top wall of the machine body and provided with a small opening. A mixing cavity which is positioned below the asphalt cavity and extends to an opening in the bottom wall of the machine body is formed in the machine body; a feeding hole communicated with the mixing cavity is formed in the bottom wall of the asphalt cavity; a first heating block located in the machine body is arranged on the outer wall of the mixing cavity;and a first transmission cavity located above the asphalt cavity is formed in the machine body. According to the asphalt pavement repairing machine, stones in an old asphalt pavement can be utilized after the old asphalt pavement is shoveled up automatically, the new asphalt pavement is compacted at high temperature after new asphalt is paved, the pavement can be put into use as soon as possible by quickly cooling the pavement through a ground cooling device, the influence on the traffic is reduced, and a large amount of manpower and material resources are reduced.

The invention relates to a hydraulic grab for stable pavement spreading, which comprises an installing base, a rotating base, a first grabbing section and a second grabbing section; the bottom part of the installing base is provided with a rotating base, and a hydraulic stretcher is installed in the center of the bottom part of the rotating base through a bolt; the output end of the hydraulic stretcher is fixedly connected with a pin shaft for connecting the first grabbing section with the second grabbing section; the top parts of the first grabbing section and the second grabbing section are equipped with vibrating motors through the bolt, and screens are installed on the outside walls of the first grabbing section and the second grabbing section; the edge of the outside of each screen is fixed with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with a cover plate moveably arranged by ear blocks, and the ear blocks are arranged at the top edges of the first grabbing section and the second grabbing section. The first grabbing section and the second grabbing section are vibrated through the vibrating motor, so that materials in a grab bucket are evenly fallen from the screen, thereby realizing the purpose of uniform pavement spreading; the pavement spreading needs not to consume a lot of labor forces, and the paving efficiency is high.

The invention discloses a road swinging laying device. The road swinging laying device comprises a stirring box; a swinging pipe communicates with the lower end of the stirring box through a communication pipe; and a swinging component is connected to the tail end of the swinging pipe. According to the road swinging laying device, by arranging the swinging pipe and the swinging component, reciprocating swinging laying of layed materials is realized so that the volume of the laying device is smaller and the laying device is convenient to move during integral transportation and operation; by arranging a moving block, a screw rod and an adjusting wheel, the moving range of the eccentric column is adjusted to change the swinging range of the swinging pipe so as to adapt to the laying of roadswith different width specifications, and therefore, the applicability is good; and by arranging a paving wheel at a material dropping pipe at the front end of the swinging pipe, efficient mechanical paving is realized, and the operation efficiency is enhanced.

The invention provides a V-shaped grooving machine for pavement bending crack repairing construction. The machine comprises an upper machine frame and a lower machine frame, a flying dust collecting device, a grooving device, a motor, a triangular belt, a motor belt wheel, an upper twisting seat, a bearing, a grooving belt wheel, a dust collecting spring, a guide sleeve, a handrail and a nut whichare installed on the upper machine frame, and a universal wheel, a supporting land wheel, a lower twisting seat and a screw rod seat which are installed on the lower machine frame, the left ends of the upper machine frame and the lower machine frame are hinged through a hinge seat shaft through which the upper hinge seat and the lower hinge seat are communicated in series; the grooving machine ischaracterized in that the surface of a conical cutter body of the grooving machine is provided with cutting edges which are arranged on a plurality of spiral lines with the screw pitches gradually reduced from top to bottom, the overall dimensions of the cutting edges are gradually reduced, and the two hollow semi-drum-shaped flying dust collecting devices are symmetrically installed on the leftside and the right side of the grooving machine. According to the machine, a V-shaped groove can be cut at a time in the pavement crack bending direction, and cut powder settles in a dust collecting cavity in the bottom of the flying dust collecting device.

A method for synchronizing control of a road test simulator and a road test simulator having four rollers (10, 20, 30, 40) and four asynchronous motors (12, 22, 32, 42). Each of the asynchronous motors is used to actuate one of the rollers. Each roller is associated with a speed/angle rotation. The synchronization control takes place electronically and in the manner of a ring structure.

A joint density assembly adapted for use on a screed comprising an endgate having a vertical axis, a frame mounted to the screed, a mounting means adapted to mount the frame to the screed, and a fixed shoe, a bolt-on unit mounted to the screed and disposed between the screed and the endgate, and a means for adjusting the bolt-on unit between a downward position and an upward position. A method for increasing the density of an asphalt longitudinal joint comprising providing a joint density assembly and adjusting the bolt-on unit.

The invention discloses an energy-saving road asphalt crack pouring machine, which belongs to a road construction facility. The energy-saving road asphalt crack pouring machine comprises a rack, an asphalt melting box, a liquefied gas tank carrying box, a liquefied gas burning mechanism, a molten asphalt lead-out box, a crack pouring mechanism, an asphalt stirring mechanism, a rack forward guide mechanism and a control mechanism, wherein the asphalt melting box is arranged at one end of the rack; the liquefied gas tank carrying box is arranged at the other end of the rack; the liquefied gas burning mechanism is arranged in a liquefied gas burning mechanism cavity; the molten asphalt lead-out box is arranged on the lower part of the asphalt melting box; the crack pouring mechanism is arranged on the molten asphalt lead-out box; the asphalt stirring mechanism is arranged on a box cover; the rack forward guide mechanism is arranged on the rack; the control mechanism is arranged on one side of the asphalt melting box and the liquefied gas tank carrying box; the outer wall of the asphalt melting box is provided with an expansion gas absorbing mechanism, and the box wall is provided with a molten asphalt lead-in port; the bottom of the box cavity of the molten asphalt lead-out box is provided with a crack pouring pipe hole, and the upper part of the box cavity is provided with a molten asphalt lead-out box cover; and the crack pouring mechanism comprises a motor, an asphalt pump, a guide column, a rubbing board rack, an enclosing baffle frame, a scraping plate and a crack pouring pipe. The energy-saving road asphalt crack pouring machine has the advantages of good energy saving effect, capability of forwardly and quickly advancing, short heating time, capabilities of guaranteeing safety and avoiding blockage and good operability effect.

An adaptive balancing mechanism of dual-head cement troweling machine includes a water tank, a screw support base, an adjusting screw, a sensor and controller, a counterweight, a stepper motor, an underframe, a guide rail, a guide rail support plate, limit plates, and a transmission member. The controller collects the weight change information of the water in the water tank in real time according to the operation process. Adjust the position of the counterweight in real time by the stepper motor and the adjusting screw to make the two trowel heads in adaptive dynamic balance to the ground pressure.

The invention discloses an asphalt pavement repairing device which comprises a repairing table, an asphalt discharging port is fixed to the center of the lower surface of the repairing table, a heating cavity is formed in the repairing table, four symmetrically-distributed universal wheels are installed on the lower surface of the repairing table, and the four universal wheels are located at the four corners of the lower surface of the repairing table correspondingly; heating tubes are fixed to two inner side walls of the heating cavity; a push rod is fixed to one outer side wall of the repairing table; according to the asphalt repairing device, through the arrangement of the crushing mechanism, rapidly-cooled and caked asphalt is crushed, and subsequent stirring and hot melting operation is facilitated. Through the arrangement of the compaction mechanism, the compaction roller is driven to roll while keeping up-down reciprocating motion during pavement repairing, the compaction efficiency is improved, the pavement is compacted more thoroughly, the repairing effect is better, the surface of the compaction roller is cleaned in time through the arrangement of the cleaning ring, smoothness of the surface of the compaction roller is ensured. Therefore, the asphalt is paved more uniformly and flatly, and the repairing effect is better.

An electronic control device on a road paver includes an operator's console and a host system unit which is connected via a bus system to electronic subsystems, and which has an inputting and indicating section and a storage area for adjusted machine parameter-data, which machine parameter-data are set and stored at least in the host system unit for the parameterization of the road paver, whereby at least one data exchange port is provided which is connected to the host system unit and which is bi-directional. A mobile data memory device is detachably attached to the data exchange port for storing and safeguarding at least the machine parameter-data, which are set in the host system unit in redundant fashion.

The invention discloses a road repairing device for civil engineering. The device comprises an outer shell; an ash suction cavity is formed in the outer shell; an opening of the ash suction cavity isdownward; a connecting cavity is formed above the dust suction cavity in a communicating manner; a sliding cavity is formed in the lower end wall of the connecting cavity in a communicating mode; a cam cavity is formed in the right side of the sliding cavity; a transmission cavity is formed above the cam cavity; an extrusion cavity is formed below the cam cavity; a fine net isolation block fixedlymounted on the end wall of the connecting cavity is arranged above the sliding cavity; a moving cavity is formed in the right side of the dust suction cavity; an opening of the moving cavity is downward; and a liquid supplementing assembly is arranged in the moving cavity. According to the method, the pavement with pits can be rapidly repaired without the need of waiting for a long time for cement solidification, the situation that in order to repair the pavement, road congestion and traffic jam are caused is prevented, some rural roads with only one road are closed, and the repaired pavementcan be immediately opened to traffic and is good in bearing capacity.

The invention relates to an injector device with plastic for repairing cracks, which has an injector gun with an injector nozzle for the outlet of the plastic on a first end, a collector for receiving plastic beads connected to the second end of the injector gun, supply means configured to move the plastic beads from the collector along the injector gun to the injector nozzle, and heating means along the injector gun in order to heat the plastic beads until they are in a liquid state before the outlet thereof through the injector nozzle.

The invention discloses a ground surface leveling and scraping device convenient for restricting a range. The ground surface leveling and scraping device comprises a rectangular bearing base, whereinthe upper surface of the rectangular bearing base is fixedly connected with a vertical strip-shaped bearing box body; a lifting ground surface smashing mechanism is arranged on the front surface of the vertical strip-shaped bearing box body; a scraping mechanism is arranged on the back surface of the vertical strip-shaped bearing box body; a moving mechanism is arranged on the lower surface of therectangular bearing base; the inner upper end of the vertical strip-shaped bearing box body is fixedly connected with a bearing plate; a strip-shaped opening No. 1 is formed in the upper surface of the vertical strip-shaped bearing box body; a sealing plug is embedded in the strip-shaped opening No. 1; a group of storage batteries are put on the upper surface of the bearing plate. The ground surface leveling and scraping device disclosed by the invention has the beneficial effects that the device which is relatively convenient to use, is convenient for carrying out effective height-controlledscraping on the ground surface, is convenient for recycling soil materials after scraping in an intensive manner and is convenient for controling the scraping range to enable the ground surface to beflattened, is convenient for subsequent operations, reduces the labor strength and improves the working efficiency is provided.

The invention discloses a ground asphalt cracking device for road construction. The ground asphalt cracking device for the road construction comprises a cracking vehicle body, wherein a control switchis installed at the top end of the cracking vehicle body in an embedded mode; an installation through hole is formed in the position, corresponding to one side of the control switch, of the top end of the cracking vehicle body; installation grooves are symmetrically formed in both ends of the cracking vehicle body; and rotating wheels are symmetrically and rotatably connected to the inner walls of one ends of the installation grooves. The ground asphalt cracking device for the road construction is scientific and reasonable in structure and safe and convenient in use; fixed screw rods are taken out from a cracking machine mounting seat and fixed plates by rotating rotary handles, so that angles of a asphalt cracking rod and a cracking machine can be adjusted; and vibration transmitted to the cracking machine mounting seat can be absorbed through mounting slide plates connected to one end of the cracking machine mounting seat in combination with shock absorption top plates, shock absorption springs and shock absorption columns connected to the top ends and the bottom ends of the mounting slide plates, so that the vibration transmitted to the cracking vehicle body can be reduced whenground asphalt is cracked, and the shock absorption protection to the cracking vehicle body is increased.