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

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 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.

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 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 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 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 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 discloses a device for positioning a construction machine and monitoring its safety area and a method for using the same. The purpose is to monitor the working position of the construction machine or its moving parts to ensure that it is in the safety area. The present invention adopts the scheme of laser ranging and image recognition and tracking, and calculates the relative coordinates of the construction machine by measuring the distance from the construction machine to the image acquisition device and related angles, and judges whether it is within the set safe area. This solution includes a ranging target, a laser rangefinder, a two-axis pan / tilt, an image acquisition device, a target recognition unit, a pan / tilt control unit, an angle measurement device, a position calculation unit, a communication device, a safe area discrimination unit, and an alarm device. The application of the device and method of the invention can reduce construction accidents, reduce property losses and casualties, and overcome the limitations of safety warning signs and fences in complex construction environments.

Disclosed is a method of using virtual reality technology to show a tunnel geological forecast result. Shown content includes a simulated excavated section tunnel scene and a simulated non-excavated section forecast scene, and a simulated tunnel face exists between the simulated excavated section tunnel scene and the simulated non-excavated section forecast scene; the simulated excavated section tunnel scene and the simulated tunnel face are in default non-display, and the simulated non-excavated section forecast scene is in default display; a forecast switch triggering the simulated tunnel face for disappearing and displaying the simulated non-excavated section forecast scene is arranged on the simulated tunnel face. The virtual reality technology is adopted to show the geological forecast result which is immersive to a user, scenes are vivid, the user can understand various potential geological dangers more easily, and the potential geological dangers are as plain as daylight. Virtual dynamic scenes are adopted, and when the method is applied in the field of geological forecast, data parameters are more accurate and generated scenes are more real and vivid.

The invention provides a safety supervision system and method for high-altitude operations, including an environmental monitoring unit, a vital sign monitoring unit, a behavior monitoring unit, a database, a processor, and an alarm; the environmental monitoring unit is used to detect environmental information, and the vital sign monitoring unit It is used to collect vital sign data, and the behavior monitoring unit monitors and records images and action pictures of workers during work; the environmental monitoring unit, vital sign monitoring unit and behavior monitoring unit are respectively connected to the database, processor and alarm, and The collected relevant information is uploaded to the database for storage; the processor has data connection with the database and the alarm respectively, so as to retrieve the stored data information for comparative analysis. The invention can monitor the physical condition and environmental information of the workers before their construction work and judge whether they meet the safe working conditions, and monitor the possible unsafe behaviors of the workers during the working process in real time and give warnings.

The invention discloses an interference detection method and system of an engineering vehicle, a mechanical arm and a flexible pipeline. The interference detection method between the mechanical arm and the flexible pipeline comprises: obtaining a discrete catenary model of the flexible pipeline in three-dimensional space; obtaining A bounding box model of the manipulator; judging whether the bounding box model intersects with the discrete catenary model. The method for detecting interference between the mechanical arm and the flexible pipeline is simple and fast, and saves development costs. It can detect the interference between the mechanical arm and the flexible pipeline, thereby reducing the occurrence of construction accidents and improving the efficiency of construction operations.

The invention discloses a method for early warning and treatment of construction accidents of pile foundation impact hole forming in a karst development area, and belongs to the technical field of civil engineering safety early warning. It includes the following steps: step 1: geotechnical engineering drilling; step 2: three-dimensional geological information modeling; step 3: pre-judgment of the risk of pile foundation impact hole formation; step 4: treatment of pile foundation hole formation risk. The invention can effectively warn the construction accidents that may occur in the impact hole formation of the pile foundation in the karst development area, and the staff can carry out corresponding risk treatment, significantly reduce the occurrence probability of construction accidents, improve the construction efficiency of the pile foundation hole formation, save money, and shorten the construction period. .