333 results about "Highway engineering" patented technology

The invention discloses a road culvert inner wall damage image detection and traffic capacity evaluation method and system, and relates to the technical field of road engineering detection and computer vision, and the method comprises the steps: collecting multi-source data through an annular camera, a laser section scanner and a mileage encoder carried by a detection robot, and carrying out the panoramic expansion and time-space registration; using a multi-scale attention panoramic segmentation network to identify damages such as lining cracks, joint slab staggering, damage and chipping, steel bar exposure and water leakage; calculating the clearance size and the deposition thickness of the culvert by adopting an ellipse fitting method; according to the method, the culvert detection speed reaches 50 m / h, and the damage detection accuracy reaches 89% or above.

The invention discloses a lightweight method and system for a highway engineering three-dimensional live-action model and a medium, and relates to the technical field of three-dimensional live-action modeling. The method comprises the following steps: firstly, carrying out engineering semantic segmentation on an input three-dimensional grid model, and extracting design parameters in a BIM / GIS (Basic Information Model / Geographic Information System); then, constructing a multi-level constraint model fusing semantic constraints, engineering precision constraints and design parameter constraints; and finally, carrying out iterative simplification under the guidance and limitation of the multi-level constraint model by adopting an improved quadratic error measurement algorithm. The method solves the problems of semantic information loss, out-of-control local precision and disjunction with design intention when a traditional pure geometric simplification method is applied to highway engineering, and can intelligently reserve key engineering characteristics, control geometric errors and fit a design form while ensuring that the data size of the model is greatly reduced. And a high-quality lightweight model suitable for professional analysis and application is generated.

The invention relates to the technical field of highway traffic, and discloses a digital management and control method and system for highway engineering test detection. The method comprises the following steps: acquiring highway engineering test detection data, preprocessing original detection data in real time by using edge computing nodes, and generating a standardized detection data stream; based on the data stream, a dynamic window segmentation algorithm is adopted to extract time domain features of detection data, and a multi-level data quality evaluation model is established. And performing exception marking on the detection data through the model, matching exception types in combination with a historical exception data pattern library, and outputting an exception detection result and confidence. And triggering a self-adaptive sampling strategy according to an abnormal detection result, adjusting the detection data acquisition frequency and the sampling precision, and generating an optimized detection task instruction. And finally, issuing an instruction to an edge computing node, synchronously updating a parameter threshold value of the multi-level data quality evaluation model, and forming a closed-loop feedback control mechanism.

The invention provides a method for generating a highway engineering feasibility research report based on local large model training, which is based on a locally deployed large model, integrates multi-source data, and realizes mapping and verification from a fuzzy policy to a structured field through regular extraction of a standard field and construction of a highway engineering knowledge graph. The method adopts TensorRT to accelerate reasoning, injects a specification term table, optimizes term consistency in combination with comparative learning, and generates a specification text through LoRA fine tuning and a reward function. After route parameters are input, geometric features are calculated, a disaster database is associated to recommend a detour scheme, and chapter content is generated. And outputting a formal report based on the template, and ensuring data consistency through cross validation. RPA is adopted to capture standard updating, Kafka and Fiss vector libraries are combined to achieve compliance verification, knowledge graph incremental updating and conflict correction are triggered, and a full-process automatic and intelligent feasibility research report generation system is formed.

The invention relates to the technical field of highway engineering, in particular to a method for predicting the dynamic resilience modulus of coarse-grained soil based on static index and dynamic modulus conversion, which specifically comprises the following steps of: testing various different types of roadbed soil samples to be tested; obtaining dynamic and static rebound modulus values of each subgrade soil sample under the conditions of optimal moisture content and set compaction degree and a relation between the dynamic rebound modulus value and CBR; establishing a dynamic and static modulus conversion equation; performing linearization processing on the dynamic and static modulus conversion equation, constructing a matrix equation based on a linearization processing result, solving the matrix equation by adopting a least square method to obtain regression constants k1, k2, k3 and k4, and substituting the regression constants into the dynamic and static modulus conversion equation; and constructing an equation by using the coarse-grained soil dynamic rebound modulus and the CBR value, and solving an equation regression constant to obtain a coarse-grained soil dynamic rebound modulus prediction formula. The problems that in the prior art, an existing conversion relation mechanism is insufficient in consideration, sample representativeness is limited, and the model generalization ability is weak are solved.

The invention relates to the technical field of highway engineering digital management and artificial intelligence, and provides a highway engineering drawing, quantity and price integrated cost compilation method and system based on AI enhancement. The method comprises the steps of obtaining a to-be-processed design drawing; based on AI multi-modal recognition capability, processing the input design drawing, and performing automatic extraction, calculation and cleaning to form a multi-level engineering quantity combination data set based on standard EBS classification and coding; automatically associating the project amount combination data set to a budget cost project, a list sub-item or a quota sub-item based on a rule engine, and generating cost data of each stage according to different compilation depths and data category requirements of cost of different stages; performing penetration or backtracking on data of each link from input to output, and generating a graph, quantity and price integrated management framework; and when the design drawing is changed, updating the related engineering quantity combination data set and the cost number based on the drawing, quantity and price integrated management framework so as to generate standardized cost data and reports.

The utility model relates to a sampling device for highway engineering test detection, and belongs to the technical field of highway engineering. The sampling device for highway engineering test detection comprises a bottom plate and a sampling piece arranged above the bottom plate, the anti-seismic assembly is arranged on the surface of the sampling barrel of the sampling piece; wherein the anti-seismic assembly comprises an anti-seismic cover arranged on the surface of a sampling barrel in the sampling piece, and a fulcrum is arranged below the anti-seismic cover; by arranging the anti-seismic assembly on the surface of the sleeve, when the sampling barrel descends and samples, the anti-seismic cover and a plurality of fulcrums are utilized, so that the sampling barrel can be supported and kept stable, and meanwhile, vibration force generated when the sampling barrel and a road surface rotate at a high speed can be counteracted in a multi-point manner; the problem that the tightness of a sample in the sampling barrel is influenced by resonance between the sampling barrel and other structures due to vibration generated by the sampling barrel during sampling can be effectively prevented.

The application discloses a high-viscosity recycled asphalt mortar based on oil-rich RAP fine materials and a preparation method thereof, and belongs to the technical field of highway engineering materials. The high-viscosity recycled asphalt mortar comprises the following components: oil-rich RAP fine materials, base asphalt, a high-viscosity modifier, a recycling agent and a dissolving agent. The high-viscosity modifier comprises the following components: waste tire rubber powder grafted with GMA (glycidyl methacrylate), BMI (bismaleimide), an adhesive, isooctanol polyoxyethylene ether and sulfur. The waste tire rubber powder grafted with GMA can improve the interfacial bonding strength of the oil-rich RAP fine materials and the base asphalt, thereby improving the water damage resistance of the recycled asphalt mixture. The BMI forms an interpenetrating structure (crosslinking network) among the rubber powder, the oil-rich RAP fine materials and the base asphalt, thereby improving the crack resistance of the recycled asphalt mixture.

The utility model discloses a highway engineering prefabricated reinforcement cage temporary hoisting device which comprises a main body assembly, a supporting plate, a fixing column, a supporting piece, a fixing plate, a first driving piece, a first limiting piece, a guiding piece, a mounting frame, a first spring, a connecting block and a clamping plate. The steel reinforcement cage mounting frame has the advantages that the mounting frame can be conveniently mounted by arranging the fixing plate, the first spring can be conveniently mounted by arranging the mounting frame, self-adaptive adjustment can be conveniently carried out on different steel reinforcement cages by arranging the first spring, the clamping plate can be conveniently mounted by arranging the connecting block, and the clamping plate can be conveniently mounted by arranging the clamping plate. And a second motor is arranged, so that a connecting frame can be conveniently driven to move, then a second limiting block is driven to move, the reinforcement cage is supported after the reinforcement cage is lowered to a proper position, and thus the reinforcement cage is conveniently disassembled.

The invention discloses a highway engineering quality detection drilling and sampling device, and relates to the technical field of highway engineering, the highway engineering quality detection drilling and sampling device comprises a base, the side wall of the base is slidably connected with a moving seat, the upper side of the base is fixedly connected with a fixed beam, and the inner wall of the fixed beam is rotatably connected with a threaded rod through a bearing; the lower end of the threaded rod is rotationally connected with the outer wall of the base through a bearing, the inner wall of the fixed beam is rotationally connected with a rotating rod through a bearing, one end of the rotating rod is in transmission connection with the upper side of the threaded rod through a bevel gear set, and the outer wall of the threaded rod is in threaded connection with the inner wall of the movable base. The intelligent sensing system composed of the extension rod, the pressure detection module and the like is arranged, so that a sudden change signal of supporting force when a road surface is drilled through can be accurately captured, the vibration motor is automatically triggered to work, and the effect of intelligently vibrating and layering a drill core and a lower roadbed is achieved; the device has the characteristics of high practicability and capability of avoiding secondary damage to a road structure.

The utility model discloses a municipal highway engineering soft roadbed treatment device, which belongs to the technical field of soft roadbed treatment, and comprises a support frame, a movable plate arranged on the support frame in a sliding manner, a spiral filling pipe rotationally arranged on the movable plate, and a material injection assembly arranged on the spiral filling pipe and used for transverse material injection of a notch, comprising transverse liquid injection pipes which are symmetrically arranged on a spiral filling pipe in a sliding mode, and the multiple transverse liquid injection pipes are in through connection through hoses. And the driving unit is arranged on the moving plate and used for driving the spiral filling pipe to rotate and the transverse liquid injection pipe to slide, so that the equipment is larger in grouting area and better in grouting effect, meanwhile, the number of grooves is reduced, and the equipment is higher in working efficiency.

The invention innovatively provides a dynamic optimization method and system for carbon emission in the whole process of highway construction based on digital twinning, and belongs to the technical field of highway engineering construction management and environmental protection. The method comprises the following steps: constructing a highway construction carbon emission digital twinborn model fusing geometry, physics, rules and a data driving model; collecting mechanical, material and environmental data in real time through a multi-element Internet of Things sensing network; using real-time data to drive the digital twin model to update synchronously; based on the updated model, the lowest carbon emission is taken as a main target, the construction period and the cost are collaboratively optimized, multi-target dynamic optimization solution is carried out through an intelligent algorithm, and an optimal construction scheme is generated; and outputting and executing the scheme and forming closed-loop feedback. The system comprises a data sensing module, a data center module, a digital twin model module, a dynamic optimization decision engine module and a man-machine interaction module. According to the method, the defects of lag and management fragmentation of an existing carbon accounting technology are overcome, the crossing from static accounting to dynamic optimization is realized, and systematic monitoring and intelligent reduction of carbon emission in the whole process are realized while the construction quality and progress are guaranteed.

The invention discloses a highway cleaning device for highway engineering. The device comprises a movable frame, and a cleaning device, a cleaning device and a collecting box which are sequentially arranged on the movable frame; the cleaning device is used for spraying water to the pavement; the cleaning device comprises a liftable adjusting assembly, a cleaning assembly connected with the adjusting assembly, a conveying assembly and two auxiliary assemblies. The cleaning assembly is provided with a rotatable rotating roller and a plurality of cleaning plates and brushes which can be adjusted in the radial direction, and the cleaning assembly can flexibly adapt to road conditions and abrasion. The conveying assembly is located behind the cleaning assembly to convey garbage, and the inlet height of the conveying assembly is adjustable. The two auxiliary assemblies are arranged on the two sides of an inlet of the conveying assembly and can sweep garbage to the conveying belt. The collecting box is located below the discharging end of the conveying assembly. The road cleaning device is high in integration degree, the brushing pressure of the cleaning assembly is adjustable, the cleaning effect is ensured, the garbage collection rate is improved through the auxiliary assembly, and efficient and automatic road cleaning operation is achieved.

The utility model provides a highway engineering template supporting device, which comprises a fixed seat and a supporting plate arranged on the fixed seat, a leveling assembly is arranged at the bottom of the fixed seat, the leveling assembly comprises a telescopic piece and a supporting leg, one end of the telescopic piece is connected with the fixed seat, the other end of the telescopic piece is movably connected with the supporting leg through a spherical hinge, and the telescopic piece is connected with the supporting leg. The supporting legs are supported on the ground, the at least three leveling assemblies are arranged at the bottom of the fixing base, the leveling device can adapt to the ground under different conditions, the levelness of the fixing base is adjusted, the perpendicularity of the supporting plate is guaranteed, and the engineering quality is guaranteed.

This invention discloses a flow rate adaptive shotcrete trolley for highway engineering, comprising a base plate, a driver's cab mounted at one top end of the base plate, and a moving part fixedly connected to the other top end of the base plate. An adjusting spraying mechanism is disposed between the driver's cab and the moving part. The adjusting spraying mechanism includes a raw material storage section located between the driver's cab and the moving part and fixedly connected to the top of the base plate. One end of a conveying section is connected to the bottom of the raw material storage section, and the other end of the conveying section passes through the moving part and connects to a nozzle. The nozzle has, from top to bottom, an auxiliary material addition section, a water outlet section, and a flow rate adjustment section. This invention's shotcrete device can reduce the airborne dust content during dry shotcreting, reducing harm to human health. Furthermore, after construction, the interior of the device can be cleaned, improving the ease of use.

The invention relates to the technical field of highway engineering construction management, and discloses a highway engineering solid waste output prediction and scheduling processing system based on BIM, and the system comprises a multi-source data access and BIM fusion module which is used for analyzing a BIM model and a 4D construction plan; the construction process entropy dynamic calculation module is used for receiving the activity instance data packet, and is based on a preset entropy factor model; the material state migration network construction and evolution module is used for constructing the entropy value according to the construction process; the solid waste form and resource portrait prediction module is used for carrying out probability simulation deduction on the evolved material state migration network; and the event driving and self-adaptive scheduling decision module is used for monitoring a scheduling event triggered by the resource demand portrait or the field real-time data. By quantifying the construction uncertainty and driving the probability prediction model, the conversion from passive clearing to active pre-scheduling is realized, and the efficiency and accuracy of solid waste management are remarkably improved.

The application discloses a cement pavement repairing structure combination design optimization method, relates to the technical field of highway engineering concrete pavement damage maintenance and repair, and is characterized in that: the convex pit groove repairing structure is arranged, on the basis of improving the interlayer contact state of the area outside the joint of the new and old concrete panels, under the coupling effect of heavy load and environment, the stress characteristics of the joint area of the new and old panels of the cement pavement are effectively improved, when cracks are generated at the surface layer or the joint, the waterproof film layer in the composite isolation layer prevents water from flowing into the base layer, prevents the pumping and mud pumping phenomenon of the pavement panel under the action of the driving load, meanwhile, the composite isolation layer form is arranged between the surface layer and the base layer, the interlayer contact state of the surface layer and the semi-rigid or rigid base layer is improved, the surface layer and the base layer are vertically and continuously and smoothly contacted, and when the concrete panel bears the load, the overall stress uniformly disperses the external load to the base layer.

The application discloses a kind of highway survey radar measurement systems based on electromagnetic wave, through quantum magnetic force gradient tensor analysis and space coordinate calibration, synthetic aperture radar echo feature extraction module cooperation, using quantum magnetic force navigation model and synthetic aperture radar algorithm, realize multi-source data space-time registration and weighted fusion, construct highway geology layered model and inversion geological parameter, after grid processing of fusion data, generate three-dimensional visual model.The system overcomes the defects of traditional technology multi-source data fusion deficiency and low precision of geological parameter inversion, improves the precision, efficiency and reliability of highway survey, provides accurate geological information and visual survey results for highway engineering design and construction, has important application value in the field of highway survey.

The utility model relates to the technical field of road construction, and discloses a side pile positioning device for road engineering roadbed construction, which comprises a bottom support, the top end of the bottom support is fixedly connected with a top support, the surface of the top support is fixedly connected with a wire hanging rod, the top end of the wire hanging rod is provided with a limiting ring, and the limiting ring is fixedly connected with the top support. A first smashing block is fixedly connected to the top end of the top support, a sliding ring is slidably connected to the surface of the bottom support, and four connecting blocks are fixedly connected to the surface of the sliding ring. According to the side pile positioning device for highway engineering roadbed construction, the bottom support can be effectively supported, it is ensured that the bottom support cannot incline or topple over in the construction process, and therefore the stability of the bottom support is greatly improved, convenience is brought to a construction team through stability improvement, and the construction efficiency is improved. And the safety of the whole construction process is ensured, so that the construction can be carried out more smoothly.

The utility model relates to the technical field of highway maintenance cover, disclose a highway engineering construction maintenance cover, including support base plate, the bottom outer wall of support base plate is installed with fixed base respectively, the rotatable joint of fixed base has support axle, the lateral wall of support axle is fixedly installed with adjusting base, the bottom outer wall of adjusting base is installed with fixed stand, the lateral wall of fixed stand is installed with baffle no.

The utility model relates to the technical field of highway engineering standardization construction, concretely is a kind of pavement paving rapid template, including template, support and dismounting mechanism, support is arranged on the surface of template, and dismounting mechanism is arranged on the surface of template;Dismounting mechanism includes sleeve, sleeve is fixedly connected with the surface of template, and the surface of template is provided with jackplug;The surface of support is fixedly connected with mounting plate, the surface of mounting plate is fixedly connected with cross bar, and cross bar is inserted with the surface of sleeve and is connected, the surface of mounting plate is fixedly connected with vertical pole, and vertical pole is inserted with the surface of jackplug and is connected;The surface of support is fixedly connected with locating plate, and locating plate is provided with locating hole on the surface. The utility model, by setting up dismounting mechanism, can utilize multiple groups of support to reinforce and support single template and to multiple templates for horizontal or vertical combination, to facilitate the auxiliary operation of the pavement of different length and thickness, and the dismounting process is more labor-saving and convenient, effectively improve the convenience of equipment.

The present application belongs to the field of highway engineering information technology, in particular to a multi-standard EBS decomposition method and system based on highway engineering design information, the method comprising the following steps: S1, obtaining highway engineering design results and extracting design data; S2, performing data conversion on the design data according to a configuration file to obtain structured intermediate data; S3, converting the structured intermediate data into one or more EBS standard data according to an EBS standard algorithm. Based on this idea, the efficiency of data delivery is greatly improved, and the difficulty of data import for designers is reduced, and designers no longer need to consider different EBS standards, and design data can quickly generate data of different EBS standards.

The invention discloses a highway engineering construction resource dynamic optimization scheduling system based on the Internet of Things and an implementation method, and the system comprises a multi-dimensional perception layer, an edge calculation transmission layer, an intelligent decision scheduling layer and an execution feedback layer, and each layer forms a perception-calculation-decision-execution-feedback closed-loop scheduling system. The multi-dimensional sensing layer is deployed on a highway construction area and various construction resources; the edge calculation transmission layer performs real-time preprocessing and local calculation on the multi-source data acquired by the sensing layer; a dynamic optimization scheduling model based on reinforcement learning is built in the intelligent decision scheduling layer, and a resource scheduling optimization scheme is output; the execution feedback layer is used for driving the construction resources to execute the scheduling instruction. According to the method, the core problems of one-sided perception, calculation lag, decision-making rigidity, feedback deficiency and the like in a traditional mode are solved, road construction resource scheduling is promoted to be transformed from experience-driven to data-driven and intelligent decision-making, and finally optimal configuration of construction resources and efficient management and control of the construction process are achieved.

The utility model discloses a safety supporting structure of a steel mould for edge supporting of highway engineering, which comprises a steel mould main body, a first positioning seat is welded at one end in the steel mould main body, a two-way screw rod is arranged in the first positioning seat, and the top end of the two-way screw rod extends to the upper part of the first positioning seat and is fixedly provided with a hexagonal thread head; the outer walls of the top and the bottom of the bidirectional lead screw are sleeved with movable blocks, the movable blocks are in threaded engagement with the bidirectional lead screw, one end of each movable block extends out of the first positioning base and is welded with a locking block, a second positioning base is welded to the other end in the steel die body, and a rectangular groove is formed in the second positioning base. Positioning clamping grooves are formed in the two sides of the rectangular groove, and a positioning plate is welded to one side of the bottom of the steel die body. According to the utility model, the steel mould main bodies can be conveniently spliced and fixed, so that the steel mould main bodies cannot be staggered, the integrality is high, and the construction quality is guaranteed.

The utility model relates to be used for highway engineering's crack repair machine belongs to highway repair technical field, this be used for highway engineering's crack repair machine, include: movable support, the top of movable support is provided with repair mechanism, filter mechanism: inhale, purify to gas simultaneously, through second filter plate intercepts the larger impurity in inhaled gas, and utilizes the material receiving frame to receive the larger impurity, avoid the impurity to drop on the joint material, and through a plurality of third filter plate, be favorable to the part impurity in the gas and intercept, reduced the impurity content of gas through the first filter plate filtration, utilize a plurality of scraper reciprocating movement to the impurity that first filter plate bottom adheres to scrape and move, have guaranteed first filter plate normal ventilation operation, when a plurality of third filter plate reciprocating movement, gas will constantly blow the impurity that third filter plate inside stagnates, have guaranteed third filter plate's normal ventilation operation, improved the absorption effect of harmful gas when the device is in operation.

The highway engineering slope protection device comprises a connecting plate, through holes are formed in the two sides of the connecting plate, the highway engineering slope protection device further comprises two expansion frames, an adjusting and limiting assembly, a protection net and a positioning assembly, the two expansion frames are hinged to the bottom of the side wall of the connecting plate, and the protection net is movably connected to the inner sides of the expansion frames through the adjusting and limiting assembly; the adjusting limiting assembly is slidably arranged on the outer wall of the expanding frame, and the positioning assembly penetrates through the connecting plate to be movably connected to the middle of the connecting plate and used for fixing the position of the connecting plate and adjusting the angle of the symmetrical expanding frame. The utility model belongs to the technical field of slope protection devices, and particularly relates to a highway engineering slope protection device which aims at water and soil conservation of soil shoulders on the two sides of a highway, improves the covering quality of a vegetation net and prevents gravel from rolling.

The utility model relates to a highway engineering inorganic binder stable material scouring test device, which belongs to the technical field of highway engineering and comprises a main body box, a partition plate is fixedly mounted in the main body box and divides the space of the main body box into a driving cavity and a test cavity, and a sliding plate mechanism is fixedly mounted in the test cavity. A test cylinder is placed at the top of the sliding plate mechanism, a compaction assembly is arranged at the top of the partition plate and in the driving cavity, and a control cabinet is installed on the left side of the main body box. According to the highway engineering inorganic binder stable material scouring test device, a box door of a test cavity is opened, a placement table is moved to the right side through a sliding rail, a detachable cover plate is arranged on a main body box, so that a test material is conveniently added into a test barrel on the placement table by opening the cover plate, and after addition is completed, the test material is taken out; and the placing table slides to the lower part of the compaction assembly, and then the compaction assembly is controlled to test the test cylinder. And the effects of being convenient to use and improving the working efficiency are achieved.

The invention relates to the technical field of non-destructive testing of highway engineering, in particular to a system and a method for detecting the compressive capacity of a highway pavement, and the method comprises the following steps: setting a detection grid on a pavement to be detected, applying a preloading signal, and obtaining a stress wave propagation atlas and a deformation relaxation time sequence of each point; and constructing a design load sequence according to a wave peak attenuation rule, and constructing a detection scanning path according to a deformation fluctuation trend. The two are operated synchronously and dynamic response data is collected, iteratively compared to a response pattern library to identify a target response pattern. And based on rules and conditions of the mode, generating a load reconstruction instruction and a path optimization instruction, and executing to correct a subsequent detection process. According to the method, the dynamic generation of the detection parameters according to the real-time response of the road surface and the online adaptive optimization of the detection process based on the intermediate result are realized, and the accuracy and efficiency of evaluating the compressive capacity of the road surface are improved.

The utility model discloses a highway engineering concrete thickness detection device, which belongs to the technical field of highway engineering detection and comprises a base, a rotating plate is arranged at the top of the base, a rotating mechanism is arranged on one side of the rotating plate, a U-shaped plate is arranged at the top of the rotating plate, and a first measuring mechanism is arranged at the top of the U-shaped plate. A clamping mechanism is arranged on the side, located below the first measuring mechanism, of the side face of the base, a fixing assembly is arranged on the side, away from the U-shaped plate, of the top of the rotating plate, a second measuring mechanism is arranged on the side, close to the fixing assembly, of the top of the rotating plate, and supporting legs are arranged at the bottom of the base. During use, a user holds the grip and rotates the rotating plate clockwise, the measuring direction of the first measuring mechanism is changed to a proper position, and the rotating plate rotates above the base, so that the detection direction can be adjusted at any time, and the working efficiency is improved.

The utility model discloses a foundation pit safety protection device for highway engineering, which belongs to the field of foundation pit safety protection and comprises a handrail, a guardrail hinged to the handrail and a first supporting mechanism arranged at the bottom of the handrail and used for supporting. The first supporting mechanism comprises rolling wheels fixedly arranged at the bottom end of the handrail, a U-shaped supporting piece arranged at the bottom of the handrail in a sleeving mode and a rotating ring arranged on the handrail in a sleeving mode, the rotating ring is in threaded connection with the handrail, and the rotating ring is rotationally connected with the U-shaped supporting piece. Due to the fact that the handrails arranged on the U-shaped supporting pieces are located at the two ends of the whole protection device, and the supporting points of the U-shaped supporting pieces are located on the two sides of the guardrails, the whole protection device is not prone to toppling towards the periphery, when the protection device needs to be transferred, the rotating rings are rotated, the rotating rings move upwards on the handrails to drive the U-shaped supporting pieces to move upwards, and the U-shaped supporting pieces are separated from the ground. The rollers start to contact with the ground and are transported by rolling the rollers.