22results about How to "Reduce construction safety risks" patented technology

The invention relates to the technical field of civil engineering foundation pit supporting, in particular to a hoisting method for a large steel structure in semi-cover excavation construction of a subway station. Comprising an open excavation area and a cover excavation area; the steel structure is conveyed into the foundation pit from the open excavation area through a crane and conveyed to the cover excavation area from the interval area between the middle pile bodies; the position of the walking vehicle is adjusted, and the height of the carrier roller frame is adjusted through the lifting mechanism to correspond to the position of the conveyed steel structure; after the steel structure penetrates through a steel rope ring connected with the first electric hoist, the steel structure is conveyed to the small trailer, and the left end of the steel structure is located on the left side of the small trailer; the small trailer carries the steel structure to walk leftwards for a certain distance and is lifted by the steel rope ring connected with the electric hoist, and the small trailer and the steel structure jointly convey the steel structure to the steel enclosing purlin and are manually connected; after the steel structure in the area is installed, the walking beam is started to move forwards along the hanger rail, and the chain drives the walking vehicle to move to the next construction position at the same time. The method is simple in process, convenient to operate, high in construction efficiency and small in resource waste.

The invention discloses a road roller autonomous operation path tracking control method, system and device and a storage medium. The method comprises the steps that the current position, posture, motion state and environment sensing data of a road roller are collected through a multi-sensor assembly; calculating a distance deviation and an angle deviation between the road roller and the preset path according to the preset operation path and the current position; based on the distance deviation and the angle deviation, a steering control instruction is generated through an algorithm combining feedforward control and PID feedback control; according to the residual operation path distance and the preset total operation time, generating a speed control instruction by adopting a trapezoidal speed planning algorithm; the steering control instruction and the speed control instruction are cooperatively adapted through a coordination control mechanism; the sensor data validity, the system operation state and the operation environment safety are monitored in real time, and safety protection measures are triggered when preset abnormal conditions are met. According to the invention, high-precision path tracking, forward and backward adaptive control, steering speed coordination and multi-layer safety guarantee can be realized.

The present application provides a kind of truss support equipment for supporting steel structure floor support plate and its application method, by being designed as including: a truss and two support power components, two support power components are respectively detachably mounted on two adjacent H-shaped steel beams;Each support power component includes: power device and support component hoisted on power device, power device is detachably mounted on a H-shaped steel beam;After support component hoisted to work surface under the drive of power device, support component is connected with truss installation, under the cooperation of support component and corresponding side H-shaped steel beam, truss is supported and fixed between two H-shaped steel beams, to support steel structure floor support plate.The whole support fixing process of steel structure floor support plate is automatically completed construction surface in position and support construction, the whole process does not need to occupy tower crane hoisting, support equipment installation process is simple, saves manpower and material resources, reduces construction safety risk.

This invention discloses a BIM-based process simulation and consulting service support system and method, relating to the field of 3D modeling and visualization technology. The system includes a BIM holographic data acquisition module, a process logic intelligent deconstruction module, a dynamic process simulation engine module, a physical field real-time monitoring module, an expert knowledge decision-making module, and a visualization scheme generation module. By establishing a real-time matching mechanism between physical field data and simulation data, and setting multi-dimensional deviation warning thresholds for different construction stages, the system ensures the accuracy of various process conflict detections. Simultaneously, by linking the ambient lighting parameters collected by sensors with the BIM rendering engine in real time, it can dynamically correct the light and shadow distortion problem in the digital twin scene, avoid misjudgment of material textures caused by light and color temperature deviations, improve the accuracy of process conflict warnings, and reduce construction safety risks and resource scheduling errors.

The invention discloses on-site cutting equipment based on house building construction, and relates to the technical field of cutting equipment.The on-site cutting equipment comprises a framework, a handheld part arranged on one side of the framework and a trephine arranged on the other side of the framework, rotating arms are rotationally arranged at the two ends of the framework correspondingly, and auxiliary wheels which are symmetrically and rotationally arranged are arranged at the ends of the rotating arms; the auxiliary wheel can rotate forwards and backwards; a connecting disc is fixedly connected to one side of the auxiliary wheel, and a plurality of sliding rods which are circularly distributed at equal intervals are arranged on one side of the connecting disc. By means of the cutting equipment, the problems that in part of existing cutting equipment for housing construction, a handheld trephine is a common tool for wall cutting operation, but the handheld trephine has a certain weight, and a worker needs to continuously lift the grabbing part of the handheld trephine when cutting upwards are solved. And if the lifting time is too long, the arm fatigue of the worker is easy to occur, and then the lifting force loss is caused, so that the handheld trephine falls off, and the construction safety risk is greatly increased.

This invention relates to the field of robotic arm control technology, specifically disclosing an active vibration suppression system for a hydraulic robotic arm. The active vibration suppression system for a hydraulic robotic arm includes the following steps: Step 1, acquiring the driving force of the hydraulic cylinder of the hydraulic robotic arm as a vibration signal; Step 2, performing multi-window function filtering on the vibration signal to extract the overall trend of the vibration signal; Step 3, using a narrow time window function to identify the maximum and minimum values ​​of all signals within a wide time window function, and sliding point by point around the test point to further capture the detailed changes within the narrow time window function. If the point is the maximum or minimum value within the narrow time window function, then that point is output; Step 4, calculating the vibration index characterizing the system vibration; Step 5, calculating the joint angles of the hydraulic cylinder based on the actual stroke, subtracting the joint angle θ from the desired angle, deriving the vibration joint angle information that should be compensated, and performing compensation.

The utility model belongs to the technical field of continuous beam building construction equipment, and particularly relates to a curve walking adjusting device of a continuous beam intelligent suspension grouting bridge fabrication machine, which comprises two supporting structures respectively positioned at the front end and the rear end of a main frame and used for supporting and lifting the main frame; the cross beams are fixedly mounted at the tops of the supporting structures; the translation sliding beam sleeves the cross beam and is in sliding fit with the cross beam in the transverse direction; the first translation hinge lug is fixedly mounted at the top of the translation sliding beam; the second translation hinge lug is fixedly mounted at the top of the cross beam and is in sliding fit with the translation sliding beam in the transverse direction; the fixed end of the translation oil cylinder is fixedly connected with the second translation hinge lug, and the movable end is rotationally connected with the first translation hinge lug; the two pairs of fixing bolts are symmetrically distributed at the top of the translation sliding beam in the left-right direction, and the bottoms of the fixing bolts penetrate through the cross beam, are in sliding fit with the cross beam in the transverse direction and are used for connecting the translation sliding beam with the main frame. The utility model has the advantage that the vertical displacement and the transverse displacement of the main frame can be simultaneously controlled.

The invention provides a construction operation hazard source monitoring and early warning method, a server, a medium and a product, and relates to the technical field of hazard early warning. The method comprises the following steps: firstly, identifying a dynamic hazard source in a construction area through a pre-constructed dynamic hazard source sensing network, and determining a static hazard source by relying on a preset hazard source database so as to realize comprehensive coverage of the two types of hazard sources; the range information of each danger source is determined, the dynamic danger source corresponds to the first range information, and the static danger source corresponds to the second range information; generating exclusive early warning information for each dangerous source; and finally, an early warning heartbeat packet containing early warning information is sent by a wireless communication module equipped for each danger source by taking a defined danger source range as a reference, so that the terminal equipment of the construction worker can broadcast in time after receiving the early warning heartbeat packet. According to the method, dynamic monitoring and static monitoring are combined, the range is accurate, transmission is direct, accurate real-time early warning is achieved, and the risk that workers make contact with dangerous sources is reduced.

This invention provides a method for constructing retaining piles for a deep foundation pit within a pit, comprising the following steps: determining several sets of construction sequence groups by surveying the location of the retaining piles within the pit; for the preceding construction groups, excavating guide trenches and installing casings according to the construction sequence; constructing pile holes sequentially according to the construction sequence; each pile hole includes an empty drill section and an effective pile length section; connecting a simple hoist cage to a reinforcing cage at the bottom, lowering the simple hoist cage and reinforcing cage into the pile hole, with the top of the simple hoist cage connected to the pile hole opening; lowering a grouting pipe to pour underwater concrete to the top of the effective pile length section, and filling the empty drill section with fluidized solidified soil to the ground elevation; repeating steps 2-5 to construct the subsequent construction groups, forming the retaining piles within the pit; after the concrete has cured to the required standard, excavating the deep foundation pit and constructing the pit within the pit; and constructing a water-stop curtain on the outside of the retaining piles within the pit. This invention relates to the field of building construction technology and can solve the problems of high cost of backfilling empty drill sections with plain concrete and the easy cross-hole problems of backfilling empty drill sections with plain soil or yellow sand in the prior art.

The application discloses a kind of breach plugging assembly type pile body truss modular assembly method, belong to major natural disaster prevention and public safety technical field.The method includes four steps of breach monitoring and situation assessment, emergency rescue resource preparation, assembly type pile body truss module cooperative plugging operation, later reinforcement.Through the steel pipe pile that is punched into in upstream and downstream of breach, form box type interception structure by quickly assembling the scaffold steel pipe truss module prefabricated on embankment and steel pipe pile, effectively reduce the flow velocity of breach mouth water;Tilt fill stone residue material between the interception structure and form occupation body, throw fill loose soil after closure and close gas, finally through the later reinforcement of building moon embankment and slurry pressure injection.The application is especially suitable for important embankment breach emergency rescue plugging with fast water flow velocity and deep water depth through pile body-truss modular cooperative design, with fast emergency rescue construction speed, strong safety, high one-time success rate, solid and reliable characteristics, suitable for emergency rescue under extreme hydrological conditions.

The hoisting device for the workover rig drill floor comprises an I-shaped cross beam, the I-shaped cross beam is connected with a hoisting moving module in a sliding mode, the hoisting moving module is connected with a supporting support, and the two sides of the supporting support are connected with a double-power winch module and a manual hydraulic driving module respectively. The hoisting device for the workover rig drill floor improves the construction efficiency when a blowout preventer under the workover rig drill floor is mounted and dismounted, eliminates potential safety hazards, adopts an integrated design, is compact in structure, convenient to mount and operate, safe and reliable, has the effects of energy conservation and environmental protection, improves the mounting speed, reduces the labor intensity of personnel, and improves the working efficiency of the workover rig drill floor. The construction safety risk is greatly reduced, the safety guarantee is improved, and the purposes of innovation, efficiency creation, speed increase and efficiency improvement are achieved.

The application discloses a construction method of a suspension bridge space cable AS method, and comprises the following steps: adopting a dead wire and live wire partition arrangement strategy; arranging steel wires in a saddle groove of a cable saddle according to a rule that the dead wires are in the middle and the live wires are on two sides, and arranging the steel wires in a strand shoe according to a rule that the dead wires are on the upper side and the live wires are on the lower side, and arranging the steel wires in a layered manner from the middle to the two sides; setting a sag control cable below a main cable former, controlling catwalk linearity in stages, adjusting the first layer of cable strands for more than or equal to 2 times during construction, and supporting subsequent cable strands by the formed cable strand rigidity; deploying an intelligent control system, integrating a GNSS positioning spinning wheel, a tension sensor and a visual identification module, and monitoring the position and tension of the steel wire in real time, and automatically slowing down or stopping when the steel wire is detected to be out of position or the tension is out of limit. The application significantly improves the construction quality and efficiency of the space cable.

The utility model relates to the technical field of foundation pit steel supports, in particular to an anti-bending hinged joint structure of a foundation pit steel support, which comprises a vertical beam and a horizontal beam, an end rod is fixedly mounted at the end of the horizontal beam close to the vertical beam, and a rotating shaft is fixedly mounted at the end of the end rod. A reinforcing hinge piece used for assembling the rotating shaft is fixedly installed on the vertical beam, the reinforcing hinge piece comprises a U-shaped reinforcing seat fixedly installed on the vertical beam, hinge end plates are fixedly installed on the inner side faces of plate bodies on the left side and the right side of the U-shaped reinforcing seat, and the rotating shaft is rotationally connected with the two hinge end plates; an anti-bending supporting assembly used for pulling and supporting the horizontal beam is further fixedly installed between the vertical beam and the horizontal beam, the anti-bending supporting assembly comprises an upper hanging plate and a lower supporting plate, the upper hanging plate is arranged between the top face of the horizontal beam and the vertical beam, and the lower supporting plate is arranged between the bottom face of the horizontal beam and the vertical beam. The utility model has the advantages of firm and stable structure, bending resistance and support.

This invention discloses a construction method for the sliding placement of entire steel box girder segments using low-profile supports. The method involves a steel box girder and a support system whose overall installation principle is "first the trestle, then the sliding track." An 80t crawler crane, in conjunction with a 90mm vibratory hammer, drives steel pipe piles to the designed depth. After checking the verticality of the steel pipe piles, the installation proceeds from bottom to top, sequentially completing the installation of the pile head transverse distribution beam, longitudinal Bailey beam, transverse I-beams, and trestle deck panels. The steel box girder segments are transported to the site and can be assembled and aligned within the assembly area. This method facilitates alignment control of the steel box girder and improves work efficiency, conforming to the characteristics of prefabricated and modular bridge structure construction. It reduces the erection height of the support system, helps control construction costs, and significantly reduces construction safety risks.

The invention discloses a method for calculating the longitudinal pre-deviation of a continuous box girder support of a high-speed railway, which is characterized in that the offset of the support is mainly influenced by two factors, one factor is set as 1, namely the offset of each fulcrum caused by elastic deformation and shrinkage creep of a box girder; 2 is the offset caused by the temperature difference of the box girder system; the pre-bias of the corresponding support can be obtained by a formula =-(1 + 2), and a negative sign represents that the pre-bias of the support is arranged in the reverse direction of a numerical value obtained through calculation and is used for compensating deformation displacement of concrete caused by elastic deformation, shrinkage creep and temperature change. A calculation process and a key parameter value standard are defined, it is ensured that a support pre-deviation calculation result is accurate and reliable, the support installation quality is guaranteed, the later adjustment cost is reduced, the construction safety risk is reduced, and technical support is provided for high-speed railway continuous box girder engineering construction.

The invention discloses a hole plugging device for preventing explosive powder from returning and a hole plugging process. The hole plugging device comprises an upper structure and a middle connecting structure which are arranged in the rock mass, the upper structure comprises an upper cylindrical shell, the top end of the upper cylindrical shell comprises a one-way single door, and the inner wall of the upper cylindrical shell comprises a limiting clamping ring, a rubber ferrule and a one-way cutting groove; an upper elastic inverted wedge and a positioning pin are arranged at the lower end of the outer wall of the upper cylindrical shell; the middle connecting structure comprises a middle cylindrical shell of a hollow structure, and the middle cylindrical shell is arranged on the outer side of the upper cylindrical shell in a sleeving mode. An L-shaped pressing groove for pressing the upper elastic inverted wedge is formed in the upper end of the inner wall of the middle cylindrical shell; an L-shaped positioning groove is formed in the side wall of the middle cylindrical shell, and when the positioning pin is located at the lower right end of the L-shaped positioning groove, the upper elastic inverted wedge is pressed in the L-shaped pressing groove. The device is easy to install, reliable in fixation and safe to use, the follow-up explosive adjustment requirement is met, and precise fitting of accessories can be achieved.

The utility model discloses a prefabricated reinforced concrete wellhead of drilling front engineering has the foundation pit in the construction area and digs, and a plurality of concrete pedestals are located at the bottom of foundation pit, and the concrete pedestal is connected to each other and encloses the wellhead plane area, a plurality of prefabricated bottom plates are laid in the wellhead plane area, and the prefabricated bottom plate is connected to each other and constitutes the bottom plate structure between each other, and the bottom plate structure is full of the plane area, and the construction opening is equipped in the plane area of prefabricated bottom plate, and the prefabricated column is vertically arranged, and the bottom of prefabricated column is fixedly installed on the concrete pedestal, and the notch is equipped on the bottom plate structure, and a plurality of prefabricated side plates are arranged between the adjacent two prefabricated columns, and the side of the lowermost prefabricated side plate is attached to the side of bottom plate structure, and the bottom of upper prefabricated side plate is connected to the top of lower prefabricated side plate. Adopt the method of early prefabrication, on -the -spot assembly, reduce the on -the -spot construction time, improve wellhead construction efficiency greatly, reduce construction safety risk.

The application discloses a kind of intelligent drilling robots suitable for special-shaped space operation, belong to drilling robot technical field.The robot includes frame body, support unit, walking unit, attached unit, telescopic device and control system;Frame body is cylindrical structure, inside is equipped with drilling inner tube, drilling inner tube top end is equipped with top cover and sealing plate constitute double seal;Telescopic device is composed of rotating table, outer screw rod, limit rod, and outer screw rod bottom end is equipped with drilling motor, drill bit and six groups of pressure sensors, frame body bottom is equipped with underframe and dynamic monitoring probe;Attached unit includes first air bag and second air bag that are arranged alternately, each air bag is equipped with independent air pump and air pressure sensor.The application solves the problem that the traditional drilling equipment is poor in special-shaped space adaptability, weak in attitude control and dependent on manual operation, adapts to mine roadway and other special-shaped restricted space, has high degree of intelligence, high operation safety and efficiency, and can be widely applied to drilling operation in various special-shaped spaces.

This invention discloses a cable tensioning device, method, and application for large-angle vertical rotation of long linear structures, belonging to the technical field of installation devices for large-angle vertical rotation of long linear structures. Located at the cable anchorage end of the higher part of the vertical rotation component, it includes a cable force identification module, a mechanical transmission module, and a tensioning module. The cable force identification module includes several force measuring elements, each disposed on each strand of the cable. The mechanical transmission module includes a three-stage rotating hinge structure, comprising a first rotating hinge structure, a second rotating hinge structure, and a third rotating hinge structure connected sequentially. This technical solution addresses the problem in existing technologies where, during large-angle vertical rotation of long linear structures, individual strands in the cable may become slack, and the limitation of the installation component's length and installation height makes it difficult to tension the slack strands.