36results about How to "Reduce construction accidents" patented technology

The invention discloses a building construction safety early warning protection system based on BIM, and belongs to the technical field of BIM building construction. An information input module is used for inputting various data information on a construction site into the system. A model establishing module is used for establishing a construction site model. A central control module is used for intelligently controlling the whole system. An analysis and early warning module is used for establishing a construction site model, and analyzing various dangerous behaviors in the construction process. According to the invention, a two-dimensional model and a rectangular plane coordinate system are established, according to a dangerous area dividing unit and a travel track prediction unit, the prediction of the advancing track of the construction personnel is effectively realized. Whether a constructor enters a dangerous area or not is judged according to the predicted advancing track, the face information of the constructor capable of entering the dangerous area for construction is determined according to the face recognition and face information input unit, irrelevant personnel can be effectively prevented from entering the dangerous area, and the personal safety of the constructor can be effectively guaranteed.

The invention provides a down-hole packer based on shape memory materials. The down-hole packer based on shape memory materials comprises a rubber sleeve, a fixed end assembly and a floating end assembly. The rubber sleeve made of shape memory polymer materials is sleeved in the outer side of a pipe body, an extensile spiral pipe is embedded in the rubber sleeve, and a liquid inlet is arranged on the side wall of the pipe body. The fixed end assembly is sleeved on the pipe body and connected with the upper end of the rubber sleeve, the fixed end assembly is provided with a fixed end limit ring and a middle connector connected with the rubber sleeve, the middle connector is provided with a liquid inlet channel, one end of the extensile spiral pipe penetrates out of the upper end of the rubber sleeve to be communicated with the liquid inlet channel relatively, an over-flow sliding sleeve penetrates in the fixed end limit ring in a connecting mode, and the liquid inlet of the pipe body is opposite to the over-flow sliding sleeve. The floating end assembly is provided with a floating end limit ring which is sleeved on the pipe body and connected with the lower end of the rubber sleeve, the floating end limit ring is provided with a liquid outlet channel, and one end of the extensile spiral pipe penetrates out of the lower end of the rubber sleeve to be communicated with the liquid outlet channel relatively. The down-hole packer based on shape memory materials can meet requirements for well completion of complex structural wells with different well conditions and is controllable in setting, small in overall size and simple in structure.

The invention provides a tunnel inverted-arch self-propelled trestle. Walking supports and horizontal moving oil cylinders are arranged below a trestle body, inverted-arch side formworks are arranged on the two sides of the trestle body, and thus the trestle can move front, back, left and right. When a construction vehicle walks to a construction road section through the trestle, concrete is poured, and inverted-arch work is started through the inverted-arch side formworks. A rear approach bridge is arranged behind the trestle body, a driving wheel is arranged below the rear end of the trestle body, the walking supports are arranged below the trestle body, a front approach bridge is arranged in front of the trestle body, a front trestle brace is arranged below the front approach bridge, the integral horizontal moving oil cylinders are arranged below the front end of the trestle body, foot margin oil cylinders are arranged below the integral horizontal moving oil cylinders, side formwork systems are arranged on the two sides of the trestle body, and formwork horizontal moving oil cylinders are arranged above the side formwork systems. The tunnel inverted-arch self-propelled trestle is simple in structure and low in cost and fault rate, inverted-arch construction can be carried out while vehicle traffic is ensured, the tunnel building speed can be effectively ensured, and building accidents are effectively reduced.

The invention discloses a device for positioning a construction machine and monitoring a safe region of the construction machine and an application method of the device, and aims at monitoring an operation position of the construction machine or a moving component thereof and ensuring the operation position to be in the safe region. A laser ranging and image recognition tracking scheme is adopted,a distance and a related angle from the construction machine to an image acquisition device are measured, relative coordinates of the construction machine are calculated, and whether the relative coordinates of the construction machine are in a set safe region or not is judged. The scheme comprises a ranging target, a laser range finder, a two-axis holder, an image acquisition device, a target identification unit, a holder control unit, an angle measuring device, a position computation unit, a communication device, a safe region judging unit and an alarm device. Through the application of thedevice and the method, construction accidents can be reduced, property loss and casualties can be reduced, and the limitation of a safety warning board and a fence in a complex construction environment can be overcome.

The invention discloses alluvial plain karst developing district drilling pile formation wall protection mud which is prepared from the components in parts by mass: 100 parts of water, 6-10 parts of clay, 5-14 parts of sodium bentonite, 0.2-0.3 part of sodium carbonate, 0.002-0.005 part of polyacrylamide, 0.5-0.6 part of carboxymethyl hydroxypropyl cellulose, 0.6-0.9 part of water glass, 0.1-0.3 part of ferric chromium lignin sulfonate, 0.1-0.3 part of barite powder and 0.25-0.5 part of potassium humate. The mud prepared by the invention is suitable for an alluvial plain karst developing district drilling pile formation technology and lowers the probability of occurrence of safety accidents of drilling pile formation. A result of interaction of the mud and a stratum is changed by changingthe performance index of the mud, so that the safety coefficient of construction is increased, and the technical defect of drilling a complex strata is made up.

A self-load preprocessing component, a self-load preprocessing concrete structure and a construction method thereof, the self-load preprocessing component is a stable structure of load bearing by the material of itself, which is made from a preassembled reinforced skeleton connected with a support component. The self-load preprocessing component is manufactured at a processing space of a construction site or in a factory in advance, and the module is supported in site at a construction site; the self-load preprocessing component is hoisted so that structure design is in position, assembled and connected, and a molding board is installed as compensation at a exposed position of the reinforced skeleton; concrete is cast in the molding board, and maintained, so as to solve the technical problem in high rising building or super high rising building such as large aloft work of concrete construction, site operation difficulty, unstable quality, low efficiency, and multiple safety accident.

The invention discloses a safe protective guardrail for building construction. The safe protective guardrail comprises multiple bases, wherein the upper sides of the bases are movably connected with columns through inserting shafts, the columns are internally provided with cavities, sliding rods are slidingly connected in the cavities, the upper sides of the sliding rods penetrate through the sidewalls of the cavities, extend to the outsides of the columns and are fixedly connected with lifting handles, two side walls of each sliding rod are symmetrically and fixedly connected with multiple clamping columns, the lower ends of the sides, away from the columns, of the first supporting rods are fixedly connected with a fixing plate, the upper side of the fixing plate is rotatably connected with a rotary plate through a hinge, and one side of the fixing plate and one side the rotary plate are both slidingly connected with a sliding plate. The rotary plate is opened, the sliding plate on the side walls of the fixing plate and the rotary plate slides out and is connected with a second supporting rod, a baffle in a groove is turned away, accordingly a construction area and an outside area are separated by using the guardrail, and the sliding plate can be selectively pulled out for blocking according to the situation. In addition, a spray head can decrease flying raise dust in a site.

The invention provides a manipulator device used for clamping heating pipelines, and belongs to the field of auxiliary construction. The manipulator device is composed of a first base, a servo motor,a coupling, a bidirectional lead screw, an unthreaded rod, supporting rods, and the like. The bidirectional lead screw is coaxially matched with a threaded hole in the first base. Clamp supports are connected with a second base through the supporting rods. The two ends of each supporting rod are separately fixed to the corresponding clamp support and the second base. Telescopic rods of hydraulic cylinders are coaxially matched with unthreaded holes in the clamp supports. A fixing plate is fixed to the telescopic rod of each hydraulic cylinder through two bolts. One end of a connecting rod is connected with each fixing plate through a pin, and the other end of each connecting rod is connected with a third connecting rod. The other two unthreaded holes of each third connecting rod are separately connected with the clamp support and a clamp through pins. One ends of two unthreaded holes in the second connecting rods are connected with the clamp supports through pins, and the other ends ofthe two unthreaded holes in the second connecting rods are connected with the clamps. By adoption of the manipulator device, labor resources can be saved, the assembly and disassembly quantity in unit time is improved, and the assembly and disassembly efficiency is improved.

The invention provides a freight transport cableway hanger for transmission lines, and belongs to the technical field of the construction of transmission lines. The hanger is suitable for engineering freight transport ropeways for the transmission lines, and can prevent ropes from dropping effectively by adjusting angles with the ground at complex terrains to reduce engineering accidents caused by the dropped ropes. The hanger mainly comprises a hanger body, an end plate which is perpendicular to the hanger body, a hanging plate, an adjustable bolt, a rope support saddle and a rope support wheel, wherein a sliding chute is formed on the end plate; the hanging plate can slide along the sliding chute of the end plate by the adjustment of the adjustable bolt; and the hanging plate of the hanger is connected with the ropeway support by a pin shaft. The hanger has an adjustable function, and when the ropes of a ropeway meet intersection angles at the support, the hanger can regulate the position of the hanging plate, so that the hanger is perpendicular to the ground without external assistance. Simultaneously, the hanger has can swing with the ropes of the ropeway slightly, so that rope dropping accidents are avoided.

The invention, which belongs to the technical field of construction protection of the distribution network, particularly designs a safety monitoring system of power distribution construction. The safety monitoring system comprises a detecting component, an analyzing component and a warning component. Types of construction equipment are determined based on special sound information of the construction equipment to obtain a corresponding operation area of each piece of construction equipment; and information analyses are carried out on mounting modes and structures of power distribution equipment in the operation areas and then early warning and analysis are carried out in advance on possible equipment collisions in the operation areas as well as information of the power distribution equipment in the visual blind zone. The system having a non-fixation structure can be installed and used in different areas based on needs; the area that can be monitored and protected can be extended freelybased on needs; and with many monitoring stations, large-area monitoring and early warning can be realized.

The invention discloses a D-BIM method applied to building construction, operation and maintaining management. The D-BIM method applied to building construction, operation and maintaining management includes the steps that (1) according to the building construction scheme, BIM solid modeling is carried out, secondary development is carried out on the basis of a BIM, and a D-BIM dynamic monitoringsystem is formed; (2) through the D-BIM dynamic monitoring system, a dynamic monitoring method based on the D-BIM, an accuracy control and security early warning method based on the D-BIM, a self-control method based on the D-BIM and a D-BIM total control platform based on the D-BIM are integrated; (3) a building construction dynamic monitoring database with building dynamic monitoring space, mechanics and durability characteristics and device running conditions are established; (4) a structural-mechanics and durability-time-varying finite element model is established, and the mechanics and durability characteristics of structures of the construction process and later operation and maintenance stages are analyzed; (5) through the D-BIM total control platform, running conditions of variousdevices at the construction and operation stages are collected and controlled. By means of the D-BIM method applied to building construction and operation maintaining management, accuracy control andsecurity early warning of the construction process can be carried out in time, hidden danger is reduced, and construction efficiency is improved.

The invention discloses a construction method of an air shaft cast-in-situ bored pile. The construction method comprises the following steps of (1) setting out and positioning, (2) pile casing burying, (3) drilling machine in-place, (4) drilling hole forming, (5) primary hole cleaning, (6) hole forming detection, (7) reinforcement cage placement, (8) guide pipe lowering, (9) secondary hole cleaning and (10) concrete pouring and pile casing pulling. The water level in the hole is higher than the water level of underground water in the drilling process; after the drilling machine drills to the designed hole depth, a drill bit is lifted 300-500 mm away from the bottom of the hole, slow rotation is performed, primary hole cleaning is performed, and the time is 2-3.5 h; when pebbles or gravelswith the diameter smaller than 10 cm exist at the bottom of the hole, a reverse circulation method is adopted for hole cleaning; and when the size of pebbles or gravels existing at the bottom of the hole is larger than 10 cm, a pumping reverse circulation method is adopted for secondary cleaning in the hole. According to the construction method, the drill hole is effectively prevented from collapsing, and drilling tool clamping and burying and main winch steel rope breakage are avoided.

The invention provides a tunnel environment mechanical arm real-time collision early warning system and method.The tunnel environment mechanical arm real-time collision early warning method comprises the steps that firstly, tunnel three-dimensional space positioning information and tunnel circumferential contour surface information are obtained through a positioning system and a digital tunnel design module, and then joint variables when a mechanical arm reaches an expected pose are obtained through calculation of an inverse kinematics module; then, real-time poses of all joints of the mechanical arm relative to a reference coordinate system are obtained through calculation of a forward kinematics module, and then in a collision detection and early warning module, a model is established, and all parameters are set; a hierarchical bounding box detection algorithm and a separation axis theorem are adopted to realize collision detection and multi-level early warning between the mechanical arms, between the mechanical arms and a hydraulic pipeline and between the mechanical arms and a tunnel environment, and finally an alarm module receives an early warning instruction and sends an early warning signal to the outside. The method is suitable for real-time collision early warning of engineering equipment, the detection precision is high, the consideration condition is comprehensive, and safe and efficient operation in the tunnel construction process can be achieved.

The invention discloses an early warning treatment method for impact holing construction accidents of a pile foundation in a karst development area, and belongs to the technical field of civil safety early warning. The method comprises the following steps: step 1, geotechnical engineering drilling; 2, three-dimensional geological information modeling is carried out; 3, pre-judging the impact holing risk of the pile foundation; and 4, the pile foundation hole forming risk is treated. According to the method, construction accidents possibly occurring in pile foundation impact holing in the karst development area can be effectively warned, workers can carry out corresponding risk treatment, the occurrence probability of the construction accidents is remarkably reduced, the construction efficiency of pile foundation holing is improved, funds are saved, and the construction period is shortened.

The invention discloses a large-span composite structure floor. The large-span composite structure floor comprises a combined steel beam structure and a prefabricated floor plate. The combined steel beam structure includes an outer frame steel beam and an inner cross-shaped steel beam. The outer frame steel beam is connected with a concrete column. The inner cross-shaped steel beam is erected on the outer frame steel beam and is located in a rectangular frame formed by the outer frame steel beam. The outer frame steel beam and the inner cross-shaped steel beam form a structure in the shape like a Chinese character ''tian''. The prefabricated floor plate is disposed in a square frame formed by the outer frame steel beam and the inner cross-shaped steel beam. The large-span composite structural floor enables the overall outer frame steel beam structure to have a larger span, the density of concrete columns in a building is reduced, the design difficulty in building floors is reduced, andthe diversity of the building floor design is improved.

The invention provides a high-place operation safety supervision system and method. The high-place operation safety supervision system comprises an environment monitoring unit, a vital sign monitoring unit, a behavior monitoring unit, a database, a processor and an alarm. The environment monitoring unit is used for detecting environment information, the vital sign monitoring unit is used for collecting vital sign data, and the behavior monitoring unit is used for monitoring, recording and collecting images and action pictures of workers during operation; the environment monitoring unit, the vital sign monitoring unit and the behavior monitoring unit are respectively connected with the database, the processor and the alarm, and upload the collected related information to the database for storage; and the processor is in data connection with the database and the alarm respectively so as to call the stored data information for comparison and analysis. According to the invention, the physical condition and environment information of an operator before construction operation can be monitored, whether safe operation conditions are met or not is judged, unsafe behaviors possibly existing in the operation process of the operator are monitored in real time, and warning is carried out.

The application discloses a method for realizing automatic operation of a turnout tamping machine. Compared with the prior art, the method comprises the steps of recognizing the current position of aturnout where the tamping machine is positioned, calculating to obtain an outer tamping device protrusion predetermined position, an outer tamping device deflection predetermined position, track lifting assisting device protrusion predetermined positions, a tamping device rotation predetermined angle, a track lifting and lining device movement predetermined position, a tamping device transverse movement predetermined position and an outer tamping tine turning predetermined angle, controlling an outer tamping device to reach the outer tamping device protrusion predetermined position, controlling the outer tamping device to reach the outer tamping device deflection predetermined position, and controlling track lifting assisting devices to reach the track lifting assisting device protrusion predetermined positions. Compared with the prior art, the method for realizing automatic operation of the turnout tamping machine has the beneficial effects of reducing the labor cost, improving the operation quality and operation efficiency and reducing the accident rate. The application also relates to a device for automatic operation of the railway turnout tamping machine, and the device has thesame beneficial effects as the method.

The compressed packer has one seat sealing mechanism comprising one locking sleeve, one locking ring, one locking ring seat and one central pipe. Inside the locking ring seat, there are wedged locking blocks with outer surface matching the inner conic surface of the locking ring, locking block support sleeve to hold the locking blocks inside the holes of the locking ring seat, return springs, andlimit stops. The central pipe has steps for pushing the limit stops to shift upwards. The compressed packer has rigid wedged locking block to replace elastic support pawls, and possesses stable and reliable seat sealing, flexible smooth and reliable locking block desterilizing, and flushing path between the central pipe and the locking block support sleeve for flushing job.

The invention discloses a tunnel surrounding rock pressure prediction method for a slurry balance shield, equipment and a storage medium. The method comprises the following steps: acquiring tunnel parameters and geological data, and sorting the tunnel parameters and the geological data into time sequence data; separating the time sequence data; predicting a separated first component and a separated second component; and summing a first prediction result and a second prediction result, and outputting the sum as a prediction result. According to the invention, noise of a excavation face can be correspondingly eliminated according to needs. The invention is applied to the technical field of underground engineering construction. According to the invention, by means of a mature deep learning model, when shield is carried out under the mudstone-containing mixed stratum condition, pressure of tunnel surrounding rock can be reasonably predicted, corresponding risks in the construction process are avoided, and the accident rate is reduced; and in the aspect of academic research, technicians in the field can further research and optimize surrounding rock pressure prediction conveniently.

The invention discloses an engineering vehicle and an interference detection method and system for a mechanical arm and a flexible pipeline. The interference detection method for the mechanical arm and the flexible pipeline comprises the following steps that 1, a discrete catenary model of the flexible pipeline in a three-dimensional space is acquired; 2, a bounding box model of the mechanical armis acquired; and 3, whether the bounding box model is intersected with the discrete catenary model or not is judged. The interference detection method for the mechanical arm and the flexible pipelineis simple, convenient and rapid; and the development cost is saved, interference detection can be conducted on the mechanical arm and the flexible pipeline, and therefore construction accidents are reduced, and the efficiency of construction operation is improved.

The invention discloses a road roller for positive texture forming of an asphalt pavement, belongs to the field of manufacturing of road rollers, and aims to solve the problems that the anti-skid performance of the road surface is weak and the safety of road traffic transportation cannot be fully guaranteed due to the fact that texture features cannot be controlled in the construction time of the conventional asphalt pavement. According to the road roller for positive texture forming of the asphalt pavement, the inherent thinking that the construction texture of the original asphalt pavement cannot be designed is broken through, the positive texture is given to the surface of the road, the friction between vehicles and roads is effectively improved, and the traffic driving safety is guaranteed; besides, the heating effect is realized, the steel wheel is heated through heat radiation, asphalt can be effectively prevented from being cooled and bonded, and during new road construction and road maintenance, a wheel face of a proper specification is selected and positive textures are manufactured according to the maximum gradation particle size of the asphalt pavement, and the positive textures are formed on the asphalt pavement during rolling through the negative texture steel wheel, larger friction force is provided for vehicle-road interaction, and the safety of the vehicle in the driving process is guaranteed.

The invention provides a channel excavation construction method and system, and relates to the technical field of channel excavation, and the method comprises the steps: determining a pre-excavation region, planning a cruise route of an aerial camera in the pre-excavation region according to the pre-excavation region, and monitoring the arrangement points of an image head and a sensor; acquiring monitoring information acquired by the aerial camera, the monitoring image head and the sensor; establishing a BIM channel model according to the monitoring information, pre-stored design drawing information and pre-stored geological information, analyzing the BIM channel model, determining deformation sensitive points and water seepage points of the pre-excavation area, and giving out early warning; perfecting an original channel excavation scheme according to the early warning, and generating a first excavation scheme. Therefore, the safety risk can be found in time, the probability of construction accidents is reduced, and the construction efficiency is guaranteed.

The handheld limiting pipeline cutting machine for the building comprises a limiting device, a detection linkage device and a cutting device, a limiting shell is fixedly installed on a spring, a cutting linkage rod is fixedly installed on a limiting right side linkage plate, the spring is fixedly installed on a detection shell, and a cutting right side fixing shaft is fixedly installed on a detection linkage shaft. A cutting left side limiting gear is fixedly installed on a detection linkage shaft, a limiting motor rotates to transmit to a limiting left side fluted disc, a cutting right side fixing shaft on the cutting device is limited, locked or opened, and after the cutting device moves through the detection linkage device, when a distance is needed, a left side cutting knife fixing disc rotates reversely and is dismantled, replacement and distance adjustment are conducted. The operation cost can be reduced, safe cutting of the building pipeline is achieved, and the construction operability is improved.