831 results about "Safety coefficient" patented technology

The invention discloses a hydraulic engineering digital design method based on digital twinning, and relates to the technical field of hydraulic engineering design. According to the digital twin-based hydraulic engineering digital design method, design demand information of a to-be-designed diversion tunnel is obtained and input into a pre-trained building recognition model for comprehensive analysis, a spatial layout map of the to-be-designed diversion tunnel is obtained, and a tunnel design digital twin model is constructed; simulation data of the tunnel design digital twinborn model are obtained, simulation analysis is carried out respectively, a tunnel construction risk index and a hydraulic action risk comprehensive index of the tunnel design digital twinborn model are obtained, comprehensive analysis is carried out, and a tunnel feasibility index of the tunnel design digital twinborn model is obtained; according to the method, the tunnel design digital twin model is subjected to design optimization based on the feasibility index, so that a lagging mode of re-evaluation after building is effectively avoided, later frequent reinforcement and reworking are prevented, and the engineering safety coefficient is improved.

The invention relates to a method, a device and a system for verifying a bearing structure of a rear bumper, and belongs to the field of bumper testing, and the method comprises the following steps: carrying out mechanical property simulation in a three-dimensional model of the rear bumper; fixing the rear bumper simulation real vehicle assembly posture, starting to test the rear bumper, and recording the actually measured deformation quantity in real time; calculating a safety coefficient K; according to the method, the same process is adopted in each testing process, testing is carried out under the same condition, the reference degree of a testing result is improved, meanwhile, the data of physical testing is compared with the data of analogue simulation, and the testing accuracy is improved. And according to the existing difference, whether the subsequent design of the rear bumper is improved and optimized or not is quickly judged.

The utility model belongs to the technical field of foundation engineering, particularly relates to a foundation engineering deep foundation pit supporting device, and aims to solve the problems that the supporting range is small and the danger coefficient is high in the background technology, and provides the following scheme that the foundation engineering deep foundation pit supporting device comprises supporting plates which are symmetrically distributed, and hinged plates which are symmetrically distributed are welded to the outer walls of one sides of the two supporting plates; and an internal thread sleeve is hinged between the two hinged plates. The two supporting plates can be specially used for supporting the inner wall of the foundation pit, so that the supporting plates can be attached to the inner wall of the foundation pit in the foundation pits with different widths and sizes, the supporting effect is remarkable, the supporting range is greatly widened, the butt joint structure is arranged on each supporting plate, and the supporting effect is good. The positioning blocks in the bottom frame of the upper-layer supporting plate can be directly connected into the top frame of the lower-layer supporting plate in a butt joint mode, the upper supporting plate and the lower supporting plate are connected and fixed, the supporting device can be used for the field of supporting of deep foundation pits, use is flexible, collapse of rock soil on the upper layer is avoided, and the safety coefficient is high.

The invention discloses a control method for automatic feeding and discharging of a broach, and relates to the technical field of mortise broaching machines and mortise broaching machines. The control method comprises the steps that machining parameters are obtained, a tool changing instruction is generated, and storage position coordinates of a target broach are analyzed; according to the tool changing instruction, a posture calibration instruction is generated; a coordinate system of the guide rail truss is obtained, and a moving path of the moving frame is obtained; based on the advancing path, an inclination angle of 15-25 degrees is formed between the hook and the broach box hanging column; obtaining plug-in gap data, and generating a plug-in completion signal; the plug-in gap data is scanned, multi-source data fusion processing is carried out, and a quality evaluation report in the tool changing process is generated; and extracting the process parameter deviation value, the path planning time consumption and the metal material strength data in the quality evaluation report to obtain the structure safety coefficient of the broach assembly. The method has the effects of improving the efficiency and the safety during cutter loading and unloading, and improving the real-time performance and the flexibility of monitoring and adjusting the cutter loading and unloading process at the same time.

The invention relates to the technical field of automatic driving trajectory planning control, in particular to an optimal inter-vehicle time interval control method for cooperative cruise of a truck under a communication delay condition. According to the method, a layered control framework of truck cooperative cruise control is designed, and a vehicle safety inter-vehicle time interval model, a communication delay model and a queue collision safety model are constructed; the inter-vehicle time interval, the communication delay coefficient and the safety coefficient are quantified into space particles, optimization is carried out based on a particle swarm algorithm, and the optimal inter-vehicle time interval on the basis of guaranteeing the queue safety and the fuel economy is obtained; designing a longitudinal model predictive control (MPC) expected acceleration decision controller of truck cooperative cruise by considering multi-target constraints of safety and fuel economy in a vehicle following process to obtain an expected acceleration; and a load change-considered feedforward and active-disturbance-rejection control brake driving error compensation model is established, so that the anti-jamming capability of the model is enhanced, and the actual acceleration of the queue truck accurately follows the expected acceleration under the load change condition.

The invention relates to the technical field of power equipment detection and evaluation, in particular to a transformer anti-short-circuit capability evaluation method based on finite element micro-damage accumulation, which comprises the steps of constructing a transformer full-fault finite element model, simulating and calculating the mechanical strength and safety coefficient of a winding, establishing a micro-damage accumulation model and evaluating the mechanical life. Bidirectional coupling analysis is realized through iterative simulation, and the anti-short-circuit capability of the transformer is dynamically evaluated in real time. According to the method, transformer design parameters, short-circuit impact influences and micro-damage cumulative effects can be comprehensively considered, accurate evaluation and dynamic monitoring of the anti-short-circuit capability in the whole life cycle are achieved, and a scientific basis is provided for operation and maintenance decisions.

According to the large-span steel structure refined construction method based on the simulation model, through whole-process refined simulation and optimization, the construction level of a large-span steel structure is remarkably improved, the construction scheme is determined based on a multi-objective optimization algorithm, accurate design of parameters such as hoisting, supporting and monitoring is achieved, a temperature field model is combined with actual measurement correction, and the construction efficiency is improved. The integration of optimization closure temperature, node semi-rigidity and initial defects enables simulation errors, support stability evaluation and optimization guarantee of safety coefficients, most construction risks can be predicted in advance on the whole, the field adjustment time is shortened, the formal construction period is shortened, the construction efficiency and safety are greatly improved, the obvious engineering value and economic benefits are achieved, and the method is suitable for popularization and application. The problem that an existing large-span steel structure construction method lacks a calculation model for predicting the risk in advance and shortening the construction period by combining multi-aspect data is solved.

The utility model discloses a cold isostatic press for graphite products, which comprises a base, four corners of the base are provided with supporting legs, the supporting legs are provided with a first supporting plate and a second supporting plate, the first supporting plate is provided with a working cylinder, an end cover capable of covering up and down is arranged right above the working cylinder, and the working cylinder is provided with a second supporting plate. The second supporting plate is provided with a hydraulic supercharger under the working cylinder, the base is provided with a movable static pressure main body, a first cavity is formed in the static pressure main body, and the end cover is matched with the working cylinder and then statically presses in the first cavity; when the cold isostatic press for the graphite product is used, graphite can be pressed into a solid body, the overall structure is stable under high pressure, the safety coefficient is high, the static pressing body is wide in application range, the graphite static pressing requirement is met, and the cold isostatic press is suitable for application and popularization.

The invention provides a pile foundation construction monitoring control method and system, and relates to the field of pile foundation construction.The method comprises the steps that operation parameters of construction equipment are obtained at multiple moments of a monitoring period; determining a safe operation coefficient of the construction equipment according to the operation parameters of the construction equipment; acquiring construction environment monitoring data of the construction area at a plurality of moments of the monitoring period; processing the construction environment monitoring data according to a trained construction environment risk prediction model, and determining a construction environment risk coefficient; acquiring pile foundation performance monitoring data at a plurality of moments of the monitoring period; according to the pile foundation performance monitoring data, the pile foundation safety coefficient is determined; and generating a monitoring control report according to the construction equipment safety operation coefficient, the construction environment risk coefficient and the pile foundation safety coefficient. According to the invention, the comprehensiveness of pile foundation construction monitoring control can be improved.

The application relates to a vehicle type traveling equipment. The vehicle type traveling equipment comprises a cutting assembly, a chassis, a cutting motor, a detection device and a control device. The cutting assembly comprises a mowing element for mowing. The chassis supports the cutting assembly. The cutting motor is arranged to drive the cutting assembly. The detection device detects a first operating parameter and a second operating parameter of the cutting motor. The control device controls the cutting motor to stop or slow down when the first operating parameter is in a first threshold range and the second operating parameter is in a second threshold range for a first preset time. The second operating parameter is different from the first operating parameter, and the second operating parameter at least comprises a rotating speed of the cutting motor. The application improves the accuracy of judging whether the cutting assembly works normally, and further improves the safety factor of the vehicle type traveling equipment.

The invention discloses an under-mine environment accurate positioning system based on a UWB technology, and relates to the technical field of data processing and positioning, an underground area is divided into a safe area and a dangerous area by obtaining the structure risk value of each sub-area and combining the structure risk value and the position information of the corresponding sub-area, and the safe area and the dangerous area are accurately positioned. A plurality of rescue robots are arranged in the underground area; acquiring position information of the mobile tag, displaying the position information on an electronic map, generating an air quality coefficient, and dividing the plurality of sub-regions into risk regions and safety regions according to the air quality coefficient; and sending inquiry information to the miner, acquiring a corresponding safety coefficient, and if the acquired safety coefficient is lower than a safety threshold value, planning a support path to the miner for the rescue robot, so that the rescue robot rescues the miner along the support path. After the miner is found according to the position information of the miner, the miner is rescued through guidance of the rescue robot, and the miner is prevented from getting lost and being lost.

The utility model relates to a rail type bin flattening device which comprises first rails and second rails which are arranged in parallel, a bottom frame and a first driving part are arranged between the first rails on the two sides, a scraping plate seat and a second driving part are arranged on the bottom frame, the second rails are located above the first rails, and bottom layer sliding blocks are arranged on the first rails in a sliding mode. Third rails are fixed to the bottom layer sliding blocks, surface layer sliding blocks are arranged in the third rails in a sliding mode, the bottom frame is installed between the surface layer sliding blocks on the two sides, third driving parts are arranged on the third rails, side edge sliding blocks are arranged on the second rails in a sliding mode, two sets of side edge sliding blocks are arranged on each second rail, and each side edge sliding block comprises a clamping part. And the clamping part is fixed with the third rail. When the height of the grain surface changes, the height of the bottom frame stretching across the full width range of the granary is adjusted, and compared with only lifting of the scraper, the overturning moment borne by the bottom frame is smaller. And the second track can share part of stress of the underframe, so that the stability and the safety coefficient of the utility model are further improved.

The present invention relates to the technical field of boiler manufacturing, and provides a weld seam structure suitable for a narrow gap water-cooled wall tube panel and a welding process. The weld seam structure comprises groove gaps formed between adjacent water-cooled wall tubes; joints are provided on the sides of the adjacent water-cooled wall tubes close to each other; the joints are distributed on the upper sides of the groove gaps, and the joints are communicated with the groove gaps; and the groove gaps comprise V-shaped grooves or U-shaped grooves. In addition to the original joints, adjacent water-cooled wall tubes are considered as a whole, and gaps formed between the water-cooled wall tubes are machined into groove gaps and welded with the joints, thereby increasing the thickness of a welding seam at a tangent point and the safety coefficient, facilitating ray radiographic inspection, and solving the technical problem of great hazards to the safe operation of units due to the fact that when the gaps between the adjacent water-cooled wall tubes are small, the welding quality at the tangent point position of the adjacent water-cooled wall tubes cannot be effectively guaranteed due to inconvenient observation, welding, and radiographic inspection.

The invention discloses a bolt strength calculation and evaluation method and device and a storage medium, and belongs to the technical field of commercial vehicles. The method comprises the steps that pre-tightening force is obtained; the pre-tightening force is applied to the bolt, and a whole vehicle pre-tightening working condition stress field result is obtained; obtaining the maximum value of the acceleration signal and the maximum value of the suspension displacement signal; establishing a whole vehicle vertical working condition, a braking working condition, a steering working condition and a torsion working condition based on the acceleration signal maximum value and the suspension displacement signal maximum value, and respectively substituting the whole vehicle pre-tightening working condition stress field results into the whole vehicle vertical working condition, the braking working condition, the steering working condition and the torsion working condition to obtain corresponding stress field results; and extracting the section force and the torque of the bolt from the corresponding stress field result, calculating the safety coefficient of the bolt based on the section force and the torque of the bolt, and evaluating the reliability of the bolt according to the safety coefficient. The technical problem that the bolt strength cannot be accurately calculated in the prior art can be solved.

The invention discloses a waterproof safety evaluation method and system for waterproof engineering, and belongs to the technical field of waterproofing of constructional engineering. According to the method, the waterproof safety level is comprehensively evaluated by determining an engineering structure defect quantitative index, setting a reference crack width Ws, measuring a waterproof material or engineering re-waterproof performance index Wm and calculating a waterproof safety coefficient K = Wm / Ws. The system evaluates grades based on the method, and selects corresponding waterproof materials and construction methods according to engineering importance, expected deformation and service life. According to the invention, concepts of'waterproof performance 'and'waterproof safety coefficient' are put forward for the first time, a quantitative evaluation system oriented to waterproof performance is established, the defects of heavy form and light actual effect of current specifications are effectively overcome, the transformation from'form compliance 'to'performance standard' is realized, the reliability, durability and economy of waterproof engineering are remarkably improved, and the method is suitable for popularization and application. And a scientific basis is provided for engineering design, material selection and acceptance.

The invention relates to the field of tire type walking equipment, and discloses a load-sensitive hydraulic brake valve and a load-sensitive hydraulic system thereof, and the load-sensitive hydraulic system comprises the load-sensitive hydraulic brake valve, a load-sensitive pump, a priority valve, a steering hydraulic system, a working hydraulic system, a shuttle valve and corresponding connecting pipelines; a P port, an A port, a B port, a T port, an LS1 port, an LS port, a low-pressure alarm pressure switch and a brake lamp pressure switch are arranged outside the load-sensitive hydraulic brake valve. According to the system, full-hydraulic dynamic braking can be achieved on equipment without a prefill valve, the equipment efficiency is improved, the installation cost is reduced, the energy consumption is reduced, and the service life is prolonged. Wherein the load-sensitive hydraulic brake valve integrates a brake function, a pressure maintaining function, a high-low pressure switching function, a pressure signal selection function and a pressure alarm function; the invention has the advantages of fast braking response, low noise, low failure rate, high safety coefficient, compact structure, low cost, low energy consumption and long service life.

The invention provides a monorail crane rail heavy sliding turnout which comprises an installation frame, a first short straight rail fixedly arranged below the left side of the installation frame, a second short straight rail fixedly arranged below the right side of the installation frame and a short bent rail. The rail transfer conduction assembly is movably arranged on the mounting frame and used for communicating the first short straight rail with the second short straight rail or communicating the first short straight rail with the short bent rail to form an integral structure, and the rail transfer driving air cylinder is fixedly arranged on the mounting frame and used for driving the rail transfer conduction assembly to move. The first limiting assembly and the second limiting assembly are arranged on the mounting frame and used for conducting linkage limiting on the left side and the right side of the rail transfer conduction assembly after the rail transfer conduction assembly moves in place, and the car stopping assembly is used for stopping passing of a curve when a straight way is connected or stopping passing of the straight way when the curve is connected. By means of the overall structural design, track changing is rapid and accurate during use, the structure is firm, the safety coefficient is high, the track changing running stability and passing ability of the monorail crane can be improved, faults and losses are reduced, and the running efficiency of the monorail crane is improved.

The invention provides a sleeve testing device and a strength checking and correcting method, and relates to the technical field of offshore high temperature and high pressure, and the device comprises a temperature control system which is used for providing a steady-state high-temperature simulation environment and a transient high-temperature simulation environment for a sleeve sample; the loading system is used for applying axial, radial and internal loads to the casing sample; the monitoring system is used for monitoring a surface temperature field, inner wall strain and leakage of the casing sample; and the data processing and control unit is respectively connected with the temperature control system, the loading system and the monitoring system. The method adopts the device and comprises the following steps: selecting a casing sample, fixing a sensor and completing initial calibration; heating the whole casing pipe and keeping the temperature constant, and applying instantaneous thermal shock to a specific area; synchronously applying axial, radial and internal loads; cooperatively monitoring the temperature field, the strain and the leakage rate to form an associated database; and correcting the safety coefficient. The invention solves the problems of single test temperature and insufficient load coupling of the traditional casing, and is suitable for casing performance evaluation.

The invention discloses a gear pair life prediction method based on dynamic stress, belongs to the technical field of reliability design of mechanical transmission systems, and aims to solve the problem of inaccurate life prediction caused by neglecting a dynamic effect and a real surface topography in an existing gear design method. The method comprises the following steps: firstly, acquiring gear pair interface mechanical property parameters considering shafting vibration, dynamic load and surface roughness, wherein the parameters comprise transient oil film pressure, friction coefficient, oil film thickness and shear stress; solving a three-dimensional subsurface stress field by adopting an algorithm and calculating von Mises equivalent stress distribution; stress volume integration is conducted on different rough surfaces, the honed surface is used as the reference, the relative fatigue life of other surfaces is calculated based on the Zaretsky life prediction theory, and accurate prediction and process optimization of the contact fatigue life are achieved; meanwhile, the dynamic bending stress of the tooth root is calculated based on the dynamic normal load, and the bending fatigue safety coefficient is checked.

The invention discloses a safety production virtual training method and system for a mine underground scene, and the method comprises the steps: creating a model library, and storing a preset part model through the model library; based on the mine underground mine hole excavation design drawing, the spatial orientation of each component model is obtained, and a virtual practical training scene of the mine underground is generated; based on a received practical training instruction, a virtual practical training scene is obtained from the scene library according to the practical training instruction, and the virtual practical training scene is displayed on the interaction module; adjusting and transforming the virtual practical training scene based on an operation feedback signal of a practical training miner, labeling the component model with a high danger coefficient in the virtual practical training scene, judging the safety condition of each component model under the mine, calculating the average labeling number in the virtual practical training scene, and comprehensively judging the safety coefficient of the mine. The system has the advantages that the mine underground environment is simulated through the virtual reality technology, miners are helped to carry out safety operation training under the risk-free condition, and the safety consciousness and the emergency response capacity of the miners are improved.

A deep foundation pit supporting structure design method based on system reliability analysis relates to the technical field of foundation pit structures, and obtains a supporting structure design method with high safety coefficient and low supporting cost through calculation and analysis, and comprises the following steps: S1, obtaining an engineering exploration report and a preliminary design scheme corresponding to a deep foundation pit; s2, determining a value range of a design variable x and statistical characteristics of a random variable y; s3, determining a failure mode of a deep foundation pit support design system according to engineering characteristics of the support corresponding to the deep foundation pit; s4, constructing a limit state function of each failure mode; s5, constructing a system reliability model through the system failure probability of the series system in the step S4, fusing a multi-objective optimization model into the system reliability model, and setting an objective function and a constraint condition; and S6, setting a multi-objective optimization algorithm in the deep foundation pit support design system, calculating the safety and cost of different support structures by using the algorithm, obtaining a Pareto solution set, and obtaining the corresponding deep foundation pit support structure design through comparison and selection.

The invention relates to the technical field of slope reinforcement, and provides a micro pile combination reinforcement method for a highway expansive soil slope, which comprises the following steps: when the current stability safety coefficient, the current uplift bearing capacity, the current shear strength and the current flexural bearing capacity all meet the corresponding preset conditions, taking the current design size parameter as the final design size parameter; and according to the final design size parameters, the grouting amount of each hole in a first pile of the steel pipe pile assembly and the grouting amount of each hole in a second pile of the cast-in-place pile assembly are determined, and the steel pipe pile assembly is constructed on the slope bottom face of the expansive soil slope according to the grouting amount of each hole in the first pile. And then a cast-in-place pile assembly is constructed on the slope face of the expansive soil slope according to the grouting amount of each hole in the second pile. According to the method, the influence of the expansive soil property on design and construction of the micro piles is fully considered, interaction and combined arrangement of the micro cast-in-place piles and the micro grouting steel pipe piles are integrated, the safety and reliability of slope reinforcement are guaranteed, material waste caused by excessive conservative is avoided, and operability is high.

A contact type rail transit clearance detection device comprises a clearance detection device body, and the clearance detection device body comprises an integrated mounting base, a main body fixing support, a movable support, a plurality of detection plate frameworks and a plurality of detection plates. The movable support comprises an inner side support and an outer side support connected to the outer side of the inner side support through an adjusting assembly. The main body fixing support is installed on the integrated installation base, and the inner side support inner face of the movable support is installed on the main body fixing support through an adjusting assembly. The adjusting assembly comprises a hand wheel screw rod and a slideway; each detection plate is mounted on the detection plate framework through a bidirectional spring hinge, and each detection plate framework is connected to the periphery of the outer side bracket to form a limiting frame; and the locking piece is used for locking the position of the limiting frame. The gauge detection device body is foldable, does not intrude into the gauge at all, and is high in safety coefficient and convenient to operate, and the gauge frame can be folded and unfolded horizontally and vertically.

The invention relates to the technical field of protective devices, in particular to a protective device self-adaptive to crane loads. According to the technical scheme, the device comprises a main body, an installation plate is fixedly installed at the bottom of the main body, an operation table is installed on the main body in a sliding mode, a mooring rope is rotatably installed in the operation table, a hook is rotatably installed at one end of the mooring rope, and the device further comprises a stabilizing mechanism which is arranged at the bottom of the main body and used for fixing the hook in horizontal sliding. The hook is fixed in the hoisting process, uneven stress of the cable caused by shaking is avoided, meanwhile, the cable is buffered in the transportation process, the cable is prevented from being broken, objects are transported stably, and the safety coefficient is high.

The objective of the present invention is to provide a method for designing a simple girder continuous structure system for track girders. [Solution] The present invention comprises a first track girder, a second track girder, and a simple girder continuous structure for connecting them, and the design method based on the structure includes the steps of determining the support section S1, selecting the steel plate and reinforcing bar S2, arranging the studs S3, calculating the safety factor of the crack width S4, calculating the safety factor of the bending strength S5, repeating the above steps to optimize the structure based on the minimum allowable safety factor defined by the designer S6, and completing the design of the structure system S7 when the obtained safety factor meets the requirements. The structure system can resist the tensile force in the large negative bending moment area, and does not encounter the difficult problem of tendon tension of the negative bending moment in the prior art, and the design method based on the structure quickly realizes the calculation of the force received by this type of structure and the optimization of the design, which is easy to be popularized and applied on a large scale.

The invention discloses a building construction site safety management informatization system and method, and relates to the technical field of safety management. The method comprises the following steps: reading and recording hazard index readings of different construction points on a construction site on line in real time; obtaining data logs of reading change of different hazard index items of different construction points of the construction site according to the hazard index reading which is read and recorded in real time; unsafe construction sections in the construction site are obtained according to the data logs of the reading changes of the different hazard index items of the different construction points of the construction site; obtaining the unsafe coefficient of each unsafe construction section according to the data logs of the reading changes of different hazard index items of different construction points in the unsafe construction section; and sequentially arranging the unsafe construction sections from high to low according to the unsafe coefficients of the unsafe construction sections to obtain a field detection sequence of the unsafe construction sections. According to the invention, timely and effective safety management of the building construction site is realized.

The utility model relates to the technical field of grinding processing equipment, and in particular to an automatic sand belt changing device for grinding; it comprises a sand changing mechanism, a rotating mechanism and a rotating frame installed on the rotating mechanism, wherein a plurality of sand changing mechanisms are provided and are all installed on the rotating frame, the rotating mechanism comprises a rotating seat, a rotating shaft installed in the middle of the rotating seat, and a driving motor linked with the lower end of the rotating shaft, and the lower end of the middle of the rotating frame is fixedly connected with the upper end of the rotating shaft; after the utility model improves the prior art, a plurality of sand belts can be placed at the same time by installing a plurality of sand changing mechanisms on the rotating frame, thereby reducing the frequency of manual operation, thereby improving the working efficiency of the operator, and the operator places the sand belt away from the side of the sand belt machine, and the safety factor is high.

The invention relates to the field of risk monitoring, in particular to a converter smelting stokehole safety risk monitoring and early warning system based on AI identification. Comprising an image acquisition module, a furnace front area detection module, a furnace front area analysis module, an action execution detection module, an action execution analysis module, a personnel protection safety analysis module, a safety risk comprehensive evaluation module and a management database. Meanwhile, according to the furnace front area position parameters, an area position risk evaluation coefficient is obtained, according to the action execution parameters of the operating personnel, an action execution risk evaluation coefficient is obtained, according to the protection parameters of the operating personnel, a personnel protection safety coefficient is obtained, and then a furnace front safety risk comprehensive evaluation index is comprehensively analyzed; according to the invention, intelligent safety management can be realized, the pressure of manual monitoring is reduced, and the management efficiency and quality are improved.

The invention is suitable for the technical field of engineering machinery safety control, and provides a forklift anti-rollover self-adaptive balance control system and method, and the system comprises a sensor group, a controller and an execution mechanism group. The sensor group detects vehicle body postures, cargo weight and road conditions; the controller automatically identifies working conditions such as flat ground, ramp and high-position stacking according to the data and calculates a safety coefficient; and the executing mechanism group comprises a vehicle body leveling mechanism capable of adjusting left and right suspensions and a door frame posture adjusting mechanism capable of actively adjusting postures. The controller can command the two mechanisms to work in different cooperation modes according to different recognition results, for example, the two mechanisms mainly adjust a vehicle body on a ramp, stabilize the vehicle body and goods when the goods are stacked at high positions, and preferentially stabilize the goods and then switch the vehicle under the most dangerous composite working condition. According to the method, passive alarm is changed into active cooperative adjustment, and the working efficiency is effectively guaranteed while the operation safety of the forklift under the complex working condition is improved.

The embodiment of the invention relates to the field of petroleum and natural gas development, and discloses a tubular column strength checking method, system and equipment under multi-factor coupling and a storage medium, the method comprises the following steps: fitting a relationship between a tubular column service environment parameter and a to-be-tested tubular column performance test parameter, and determining a tubular column strength checking additional multi-factor coupling influence coefficient; acquiring the extreme load and the strength of the to-be-tested tubular column under different working conditions; checking the additional multi-factor coupling influence coefficient, the pipe column extreme load and the pipe column strength according to the pipe column strength, and calculating the safety coefficient of the to-be-tested pipe column; and comparing the safety coefficient of the to-be-detected tubular column with the allowable minimum safety coefficient of the tubular column, and determining a target tubular column from the to-be-detected tubular column to complete the strength check of the tubular column. According to the embodiment of the invention, the mechanical property change of the tubular column in the actual underground environment is accurately simulated, the actual underground performance parameters and the corrosion rate of the tubular column are obtained and used for checking the strength of the tubular column, and the rationality and the safety of the strength checking of the underground tubular column are ensured.