47 results about "Gravel road" patented technology

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.

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.

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.

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.

The invention relates to a road paving device, in particular to a road construction water-bound gravel paving device. The technical problem to be solved by the present invention is to provide a road construction water-bound gravel paving device that can meet the requirements for laying water-bound gravel pavement, has fast laying speed and strong laying effect. In order to solve the above technical problems, the present invention provides such a water-bound gravel paving device for road construction, which includes a bottom plate, wheels, support rods, boxes, valves, compacting mechanisms, etc.; the bottom of the bottom plate is provided with wheels, and the top of the bottom plate Vertically connected with a support rod, the top of the support rod is provided with a box body, the discharge position of the box body is located at the bottom of the bottom plate, a water tank is arranged on the right side of the bottom plate top, and a water knot treatment mechanism is installed in the water tank. The invention paves the water-bound macadam pavement through the compacting mechanism and the water-knot treatment mechanism, and at the same time optimizes the auxiliary discharging mechanism and the maintenance mechanism to make the paving of the road more high-quality.

The invention relates to paving equipment, in particular to a device for paving a stone road in a park. Therefore, the technical problem is to provide the device for paving the stone road in the park,which can easily move stones and can adjust the area of a circular ring. According to the technical implementation scheme: the device comprises a first circular ring, mounting blocks, a supporting rod, a first compression spring, a circular blocking rod and the like; the left side and right side of the outer side of the first circular ring are both provided with the mounting block, the bottom ofthe mounting blocks is connected with the supporting rod, the right side of the lower part of the supporting rod is provided with a first groove, the inner wall of the first groove is connected withthe first compression spring, the outer end of the first compression spring is connected with the circular blocking rod, the circular blocking rod penetrates through the first groove, the outer side of the supporting rod is matched with a groove rod. According to the invention, through the arrangement of the groove rod, and the matching of the supporting rod through the groove rod, the height of the device is adjusted, and the device is convenient to use; and through the arrangement of arc-shaped plates, people can move the arc-shaped plates, so that the area of the circular ring is adjusted,and the device is convenient to use.

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.

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.

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.

The invention discloses a hammer-type paving device capable of converting between mechanical energy and elastic potential energy., The structure comprises a support wheel, an Armrest,a Box, a Controller, a steering wheel, a hammering device that converts energy, the armrest is welded to the right end of the upper surface of the box body, the controller is fixed on the left end of the front side ofthe box body by screws, the steering wheel is movably connected to the lower left end of the housing, A support wheel is mechanically connected to that lower right end of the box body, the hammeringdevice for energy conversion is welded to the inside of the box, by means of a hammering device provided with energy conversion, pressure bit, the mutual cooperation of hammer head and hammer rod, Inthe process of hammering, the stone powder can be chiseled without breaking the broken stone, which is convenient to build the broken stone pavement quickly. The interaction between the magnetic forceprovided by the magnetic structure and the elastic force of the potential energy spring enables the hammering structure to hammering the broken stone pavement repeatedly and move at a uniform speed,and the manual hand-held hole digger is not required to dig a hole, and the speed is faster and the area is larger.

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.

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.