30results about How to "Ensure structural safety" patented technology

This invention discloses a simplified calculation method for determining the length of anchorless sheet piles in bank protection reinforcement, belonging to the field of foundation pit support technology. The method includes the following steps: Step S1, performing pile length sensitivity analysis to examine the influence of the total sheet pile length L, soil cohesion c, and internal friction angle on the pile top displacement; Step S2, establishing a pile top displacement prediction formula based on the passive earth pressure coefficient theory and fitting multiple sets of working condition data; Step S3, establishing a simplified design process of "parameter determination - formula inversion - optimization verification," using the pile top displacement prediction formula to invert and solve for the optimized pile length based on soil parameters and the maximum pile top displacement, and comparing it with the minimum pile length that satisfies kick-toe stability to determine the final design pile length. This invention simplifies "trial calculation iteration" to "precise inversion," improving the design efficiency of anchorless sheet piles and achieving a balance between safety and economy by quantifying the influence of parameters.

The application discloses a kind of deep melting interlayer development area rigid pile composite foundation structure design method, it is related to rigid pile composite foundation field, including the following steps: step one, in the existing rigid pile bearing capacity calculation process, front-end increase subgrade-ground temperature field analysis;Step two, increase groundwater analysis;Step three, determine the compression modulus of the soil layer of seasonal freeze-thaw layer, (water-rich) melting interlayer, permafrost layer, bearing capacity characteristic value, check the single pile bearing capacity characteristic value of different positions in the cross section of roadbed using different pile length, pile diameter, pile body stiffness material;Step four, carry out zoned unequal design, adjust pile length, pile diameter, pile body stiffness, so that the range of all pile single pile bearing capacity characteristic values in cross section is lower than design allowable value.The application effectively optimizes pile foundation design, reduces material waste, reduces engineering cost, while ensuring the safety and stability of structure.

This utility model discloses a windproof backflow prevention structure for cooling tower louvers. It relates to the field of cooling tower louver accessories and includes: an external window frame, an anti-blowing mechanism, and an anti-detachment mechanism. The external window frame has an installation frame at its rear end and a side frame on its side. A limiting shaft is vertically installed inside the side frame, and a slider is sleeved on the outside of the limiting shaft. A return spring is sleeved on the outside of the slider, and a rack is installed on the outside of the slider. The anti-blowing mechanism prevents wind from directly impacting the surface of the external window frame, and the anti-detachment mechanism prevents the external window frame and installation frame from falling off. This windproof backflow prevention structure for cooling tower louvers, by rotating the external wind shield to change its angle, blocks wind from directly impacting the external window frame, reduces the impact of wind on the interior of the cooling tower, ensures stable airflow inside the cooling tower, maintains cooling efficiency, and requires no manual intervention.

This invention discloses a method for determining the safe distance for secondary lining construction of the pilot tunnel in small-clearance tunnel blasting excavation, which involves judging the stability of the surrounding rock deformation and deformation rate, and determining the safe allowable distance R. i Given the range of values, design an orthogonal test scheme for on-site vibration velocity monitoring, and calculate the safe distance R for each scheme. i First, based on the safe allowable distance Ri, monitoring points for blasting vibration velocity are set up, and on-site vibration monitoring is conducted. A unique K value and α value are obtained by fitting parameters such as the measured vibration velocity and explosive charge, and the calculated safe allowable distance R is then calculated. j Determine the conservative safety allowable distance R b Does it meet the requirements? If it does, then it is the final safe allowable distance R. z This scheme can determine the safe distance between the blasting source of the subsequent tunnel and the secondary lining of the preceding tunnel, thereby reducing the impact of vibrations generated by the blasting excavation of the subsequent tunnel on the secondary lining of the preceding tunnel.

The application discloses an insect exoskeleton morphological layup composite panel, a sandwich structure and a preparation method. The sandwich structure comprises two pieces of bionic layup composite panels and a piece of aramid honeycomb core layer. The bionic layup composite panel draws lessons from the spiral stacking microstructure of the insect exoskeleton, the layup design considers the symmetry and balance requirements of the composite material, a fixed rotation angle is introduced between adjacent fiber layers, and the rotation angle is taken as a period of 180 degrees, and after a plurality of periods are laid and heat-pressed and cured, the bionic layup composite panel is obtained. The bionic layup design effectively reduces the interlaminar shear stress of the composite material, weakens the inherent anisotropy of the composite material, and improves the transverse bearing capacity and impact resistance. The bionic layup composite panel and the aramid honeycomb core layer have the advantages of high specific strength, high specific stiffness, impact energy absorption, vibration and noise reduction, electromagnetic shielding and the like, and a structure and function integrated material with more excellent comprehensive performance is obtained, and the structure and function integrated material is expected to be widely used in main load-bearing structures of various spacecrafts.

The application discloses a kind of overall arrangement methods of off-grid hydrogen production platform suitable for large-scale deep far sea wind power, and relates to the technical field of off-grid hydrogen production platform, the present application adopts reasonable vertical arrangement method, it is favorable to reduce platform load gravity center, reduce platform vertical irregularity, adopt reasonable plane arrangement scheme, it is favorable to the operation and maintenance of equipment device, and also reduce the adverse effect of gravity load eccentricity on platform structure, ensure the structural rationality and safety of deep far sea off-grid hydrogen production platform.

The utility model relates to the technical field of wasp breeding equipment, concretely relates to three -dimensional wasp breeding frame of adjustable interval, including left and right two groups of mutually symmetrical vertical beams, mutually symmetrical between two vertical beams in each group, the inside surface of two vertical beams in each group is fixedly installed with a plurality of slide rails, and the top and bottom of four vertical beams are fixedly installed with reinforcing beams, and the detachable installation of support plate is arranged between the two slide rails that left and right face each other, and the end plate body of support plate is located in the slide rail and is connected with the slide rail between sliding, a plurality of nest frames are fixedly installed on the upper surface of support plate, the nest frame part is provided with a protective screen cover, the end part rod body of slide rail is provided with a clamping hole, the outer sleeve pipe is fixedly installed on the front side plate body of support plate, the plug -in limiting rod is slidably connected in the outer sleeve pipe, and the plug -in limiting rod and the clamping hole are inserted and matched. The utility model can adjust interval, has the function of limiting, and is convenient to use.

This invention provides a high-heat-dissipation battery component for new energy vehicles, belonging to the field of new energy vehicle heat dissipation battery technology. It includes a protective shell, inside which a cooling module is installed. The cooling module is used to cool the entire battery module. The battery module consists of a mounting box and battery cells. The battery cells are installed in mounting slots within the mounting box. A top plate is installed on the top of the battery module. The cooling module is connected to a serpentine cooling pipe, which has several adjusting components. Several adjusting components are arranged between adjacent sections of the serpentine cooling pipe. This invention, through the corresponding combination design of the cooling module, the serpentine cooling pipe and adjusting components, and the serpentine cooling pipe and adjusting components, achieves dual heat dissipation functions: overall cooling of the battery module and precise heat dissipation of individual battery cells, thus improving maintenance convenience.

The utility model relates to a waterproof flow guide blind ditch structure at the connecting place of diaphragm wall, it includes flow guide blind ditch main part, flow guide blind ditch main part sets up at the connecting place of diaphragm wall, is used for guiding the ground water flow, prevents the ground water and accumulates at the connecting place, the utility model discloses a flow guide blind ditch is established, effectively guides the ground water flow, prevents the ground water and accumulates at the connecting place, reduces the seepage risk, improves the overall waterproof performance of diaphragm wall, guarantees the engineering quality. The application still has the advantages such as convenient construction, low cost, can satisfy the efficient and economic demand of modern underground engineering construction.

The utility model relates to the technical field of building keel and discloses a steel baking varnish keel main keel and auxiliary keel connecting structure, and the connecting structure fixed assembly includes the fixed bolster, the fixed bolster is fixedly connected in the lateral wall of main part board, the bottom fixed mounting of fixed bolster has the connecting seat, the bottom fixed connection of connecting seat has the fixed plate, and the surface of fixed plate is penetrated by adjusting bolt, and the top fixed connection of adjusting bolt has the fixed clamp. The utility model discloses discarding the welding connection mode, and utilizing connecting structure fixed assembly and keel connection fixed assembly cooperation. Through screwing adjusting bolt, the connecting position of connecting structure and ceiling or frame can be flexibly adjusted, and the relative position of main auxiliary keel can be easily changed by rotating the adjusting handle, the accurate adjustment of installation position is realized, the needs of different construction scenes are satisfied, the defect that the installation position is fixed is overcome, and the flexibility and accuracy of construction are improved.

The present application relates to the technical fields of intelligent sensing of bridges, and particularly relates to an energy collection device arranged at a bridge expansion joint, a design method and a bridge expansion joint monitoring mechanism, comprising: a conversion unit arranged in a bridge expansion joint structure, capturing the strain of the structure after being stressed, and generating an alternating flexoelectric signal; a base layer located between the conversion unit and the bridge expansion joint, adjusting the strain distribution of the conversion unit; a rectification unit integrated with an impedance matching circuit, connected with the conversion unit, converting the alternating flexoelectric signal into a direct current, and delivering it to an energy storage unit; compared with the prior art, the beneficial effects of the present application are: the present application relates to a monitoring mechanism of a bridge expansion joint, the device has a self-powered structure based on the flexoelectric effect, without external power supply, significantly reducing the wiring and maintenance cost, at the same time, the monitoring unit realizes millimeter level displacement resolution and real-time structure health assessment, ensuring the structural safety of the bridge expansion joint.

This invention relates to the field of shipbuilding technology, and more particularly to a design method for a multi-layer continuous truss support structure for ships, comprising the following steps: fixing support columns between adjacent decks vertically, the support columns being located at deck transverse beams, and the support columns on the same vertical line forming support columns; arranging multiple rows of the support columns at intervals along the ship's width; arranging multiple rows of the support columns at intervals along the ship's length, each row of support columns being located on the same straight line and arranged at the long longitudinal bulkheads of the hull; arranging deck longitudinal girder below each deck along the ship's length, the deck longitudinal girder connecting to the deck transverse beams and the corresponding support columns, such that the deck longitudinal girder, the support columns, and the deck transverse beams form a truss support structure. This invention can ensure the progress and quality of the design and improve space utilization.

This utility model relates to the field of mounting technology, specifically to a recessed unit panel mounting system, including a wall, a mounting mechanism fixed to the wall, and a column installed on the wall via the mounting mechanism. The mounting mechanism includes a ground bracket component, a mounting bracket, and a limiting angle bracket. The ground bracket component is installed on the wall, and the mounting bracket is installed on the column. The mounting bracket and the ground bracket component are detachably connected, and the mounting bracket and the ground bracket component are fixedly connected via the limiting angle bracket. The ground bracket component includes an L-shaped ground bracket and a mounting groove. The mounting groove is located at the bottom edge of the L-shaped ground bracket and is integrally formed with the L-shaped ground bracket. A U-shaped groove is provided on one side of the mounting groove. This unit panel mounting system, through the cooperative design of the suspension shaft and the U-shaped groove, combined with the lifting effect of the adjusting bolt and the top block on the L-shaped connector, realizes flexible multi-directional adjustment of the tilt angle when the column is connected to the wall. At the same time, the limiting angle bracket is used to lock the suspension shaft to ensure structural stability and safety.

This utility model discloses a locking structure for the folding part of a folding bicycle, including a folding buckle and a locking buckle. Two folding buckles are provided; one folding buckle connects to the first folding part between the headstock connecting tube and the front frame seat tube, and the other folding buckle connects to the second folding part at a node of the front frame main beam. The folding buckle can lock and unlock the first and second folding parts. The locking buckle is connected to the fastening sleeve of the seat connecting tube and has a reverse buckle portion, which can be engaged and disengaged from the rear frame connecting part by swinging and rotating. This utility model provides two folding buckles and one locking buckle to lock the first folding part, the second folding part, and the connection between the rear frame and the seat connecting tube of the folding bicycle, respectively. This multi-point locking ensures the structural stability and safety of the folding bicycle in the unfolded state, effectively avoiding safety hazards caused by loosening of the folding parts during riding.

This invention discloses a multi-sensor fusion-based method, control method, system, equipment, storage medium, and excavator for excavator stress and strain monitoring, relating to the field of engineering machinery control technology. The monitoring method includes: S1 sensor array data acquisition; S2 noise reduction processing; S3 fusion modeling and state assessment; and S4 load path analysis. The control method specifically includes: A1 graded threshold setting, A2 control strategy implementation, and A3 control strategy library matching. The system includes: a sensor array assembly, a data processing module, and a control module. This invention overcomes existing limitations through multi-dimensional sensing technology. By integrating multi-source data such as structural stress, hydraulic load, and operating posture, and employing a noise reduction fusion algorithm to eliminate environmental interference, it overcomes the limitations and data distortion problems of single-sensor monitoring, achieving real-time monitoring of the stress state of key excavator components and significantly improving the reliability of monitoring results under complex working conditions.

This invention relates to the field of backfill construction technology for building structures, and discloses a "sandwich" type anti-settlement construction method for high embankments in the first floor. The method includes: compacting the original soil in layers; pouring C15 plain concrete on the soil layers as a primary anti-settlement cushion layer and also serving as the foundation for the construction scaffold; after the scaffold is dismantled, pouring fluidized solidified soil with micro-expansion characteristics as a core "sandwich" layer to offset creep a second time, with a mix ratio of soil:solidifying agent:water = 10:1:3.5; and constructing C25 concrete with embedded steel mesh on the solidified soil as a tertiary anti-settlement cushion layer. This application can effectively control the settlement of high embankments through a "rigid-flexible-rigid" gradient reduction mechanism, utilizing the synergistic effect of multiple differentiated materials to ensure structural bearing capacity while avoiding the risk of ground cracking, realizing the resource utilization of waste soil, and significantly reducing construction and subsequent maintenance costs.

This invention proposes a joint assessment method for fleet mission load and crack state based on Bayesian updates, belonging to the fields of aircraft structural safety, aircraft structural fatigue crack propagation tracking, and aircraft load assessment. The method includes: converting the random load spectrum under different mission histories of the fleet into equivalent constant-amplitude loads using an equivalent load method based on the Paris formula, forming a load level that can be quantified for subsequent analysis; establishing a mission-labeled load library and a fatigue crack damage propagation model; constructing a Bayesian network based on network nodes and interdependencies to build a probabilistic joint assessment architecture for mission load and crack state; using a particle filter algorithm as the inference algorithm for the dynamic Bayesian network to jointly assess the fleet mission load and structural crack state; and testing and verifying the aforementioned network architecture and method in a pre-defined fleet. This invention provides real-time assessment of the load levels of different missions of the fleet, thereby ensuring the safety of the aircraft structure.

The utility model relates to new energy field discloses a novel soft package CTP battery heat management equipment, including the box, one side of box is fixedly connected with the wind box, one side of wind box is fixedly connected with the motor, the drive end of motor is fixedly connected with the wind rod, the outer wall of wind rod is fixedly connected with a plurality of wind leaves, one side of box is fixedly connected with the ventilation board, the top of ventilation board is provided with the vent, the outer periphery of ventilation board is fixedly connected with the supporting plate, the top of supporting plate is provided with the vent. In the utility model, the wind rod is driven to rotate through the motor, thereby driving the wind leaves to produce wind power, the wind power is transmitted to the supporting plate through the vent on the ventilation board, the wind power is discharged to blow to the battery cell through the vent on the supporting plate, the airflow in the supporting plate is strengthened to radiate heat, and the heat management efficiency is improved, and the liquid cooling plate is coordinated at the same time, the heat dissipation redundancy under the extreme working condition is enhanced, and the space is not additionally occupied.

The application provides a structure for reinforcing the transverse connection of slab beams and a construction method thereof, relates to the field of slab beam construction technology, and solves the problem of easy damage of the hinge joint in the prior art. The structure comprises limiting components one and two and a tenon structure, wherein the limiting components one and two are arranged in two adjacent slab beams respectively; when the limiting components one and two are arranged in the adjacent slab beams respectively, a limiting groove is formed between the limiting components one and two, and the limiting groove is the area between the two slab beams; and part of the tenon structure is inserted into the limiting groove and can be clamped on the limiting groove after being horizontally rotated by a certain angle. The application has the advantages of simple structure, low cost, improved overall stress performance in the structure of multiple prefabricated slab beams, guaranteed structure safety, slight influence on the original slab beam, application in new construction and reinforcement engineering, installation of the transverse reinforcing device at the hinge joint of the adjacent slab beams, reduced tensile damage of the hinge joint, and no conflict with the existing hinge joint structure.

This invention discloses a method for evaluating the structural safety of operating railway tunnels based on dual-drive fusion. The method includes: acquiring tunnel structural state parameters; filtering these parameters based on the correlation between data to obtain typical tunnel structural state parameters; dividing these typical parameters into two parts: the first part serves as input to a numerical simulation model, and the second part serves as input to a multi-source data model; using a portion of the numerical simulation model's output as input to the multi-source data model; evaluating the target tunnel based on the numerical simulation model and the multi-source data model; outputting evaluation indicators for tunnel structural stability, structural functionality, and material durability; and rating the target tunnel based on these evaluation indicators. This method achieves a hybrid fusion of the multi-source data-driven model and the numerical simulation model, while combining series, parallel, and embedded modes to overcome the defects or shortcomings of series fusion, parallel fusion, and embedded fusion.

The utility model relates to mechanical technical field discloses a novel combined explosion -proof plate, including explosion -proof plate, installation side plate, is evenly provided with installation side plate on explosion -proof plate, is provided with the clamping component, buffer assembly, fixed component on explosion -proof plate, the clamping component fixed setting is in explosion -proof plate four sides, buffer assembly sets up in the clamping component inside, fixed component sets up on the clamping component, the utility model discloses through the adaptive sliding clamping structure of clamping lug and clamping groove in the clamping component, can realize the quick combination positioning installation between explosion -proof plate, reach the explosion -proof plate through the explosion and realize pressure relief conveniently, thereby protect the equipment, the design of the buffer layer and the buffer pad in buffer assembly can buffer the collision energy of installation, the cooperation of wedge -shaped fixed lug and fixed slot in fixed component, on the basis of further reinforcing connection of clamping, ensure the stability of explosion -proof plate combination, prevent the loosening condition in the combination process, provide reliable support for the use place.

The utility model relates to the technical fields of side slope protection, concretely to a highway side slope cooperative seepage and drainage composite structure, including side slope base layer, drainage component no.

The utility model relates to the field of building construction discloses a new type of anti -void pull -pressure support, including upper seat board, lower seat board, L type draw hook and pier top anchoring assembly, the upper seat board top center fixedly connected with the ceiling, both sides of upper seat board all are fixedly connected with the wing plate, the upper surface of upper seat board is equipped with the upper thread hole, the surface of upper thread hole is detachably installed with upper structure board through upper bolt, both sides of wing plate all are equipped with the limit slot, the lower surface of lower seat board is provided with two groups of longitudinal and transverse rib plate. In the utility model, through being provided with longitudinal and transverse rib plate inclined plane structure, effectively solve the grouting air retention problem, ensure that support and foundation are closely connected, improve structural stability, at the same time, the shear structure and the anti -pull structure have strengthened the ability of support resistance shear and tension respectively, make support still can work stably under the complex stress environment, promote building structure overall security.

This invention discloses a design method for the reinforcement configuration of the shell of a subsea concrete spherical battery. This method relates to the field of marine engineering structures and building materials technology, and includes the following steps: establishing and validating a mapping model, correcting circumferential force and performing dual verification, and determining and outputting the reinforcement configuration scheme. This invention establishes a water depth-diameter-stress mapping model and verifies its validity. Then, it corrects the circumferential force using an additional bending moment, determines the reinforcement area on one side through strength and crack control verification, and finally selects a single / double layer steel mesh based on the design water depth of the spherical shell, outputting a complete reinforcement scheme. This improves the safety and durability of the energy storage structure for long-term use, and solves the problem in existing technologies where the lack of a dedicated method for determining the reinforcement configuration scheme and the absence of design criteria that balance crack width control and durability leads to overly conservative designs, resulting in resource waste and structural failure risks, thus failing to guarantee the safety and durability of the energy storage structure for long-term use.

The application provides a crack evaluation method based on a linear frequency modulation Lamb wave, and is characterized by comprising the following steps: step S1, two piezoelectric transducers are pasted on a plate-shaped structural material to be detected, and are respectively used for transmitting an excitation signal x(t) and collecting a Lamb wave receiving signal y(t); step S2, Hilbert transform is performed on the excitation signal x(t) and the receiving signal y(t) to obtain analytical forms z x (t) and z y (t); step S3, mutual Wigner distribution calculation is performed to obtain a time-frequency distribution diagram; step S4, rearrangement and smoothing processing are performed on the time-frequency distribution diagram; step S5, a ridge line is extracted by using a Crazy-Climber algorithm, and then the ridge line connection algorithm is used to obtain a ridge line corresponding to each Lamb wave mode; step S6, according to a mode separation algorithm, each Lamb wave mode is separated from useless components to obtain a symmetric mode S0 and an asymmetric mode A0; step S7, two damage factors DI E and DI ρ are calculated; and step S8, according to linear relationships between the damage factors and crack length and crack width respectively, crack length and crack width are obtained.

The utility model relates to a technical field of pulverizer, concretely is a kind of pulverizer knife cavity convenient to disassemble, including knife cavity component group, the knife cavity component group includes lower knife cavity and upper knife cavity, the lower knife cavity and upper knife cavity are rotatably connected by swivel fulcrum;Driving component group, the driving component group is used to control upper knife cavity rotation angle, the driving component group includes hydraulic rod piece, upper end head piece and lower end head piece.The utility model compared with the tedious operation of traditional bolt disassembly in upper and lower knife cavity in knife cavity, hydraulic control has realized the labor-saving, quick opening and closing of upper and lower knife cavity, greatly improve the efficiency of knife cavity opening, solve the maintenance space limited problem caused by fixed connection in prior art.

The application provides an X-shaped outrigger truss lever type negative stiffness energy dissipation outrigger system, relates to the technical field of negative stiffness energy dissipation shock absorption in the technical field of building engineering, and comprises a core tube, a frame column, an X-shaped outrigger truss and a double shock absorption component, wherein the double shock absorption component comprises a displacement amplification lever, an upper damper, a lower damper, an upper pre-pressing spring and a lower pre-pressing spring; in an initial state, the axis of the upper pre-pressing spring, the hinge joint of the upper end of the displacement amplification lever and the upper damper, the hinge joint of the lower end of the displacement amplification lever and the lower damper, and the axis of the upper pre-pressing spring are in the same straight line. The application combines the displacement amplification mechanism of a lever type mechanism and the lever type negative stiffness displacement amplification mechanism, has a double displacement amplification effect, the pre-pressing force is entirely applied to a non-load-bearing component, and two groups of pre-pressing springs and dampers can be arranged on one outrigger truss to generate a double damping energy dissipation effect.

The utility model provides a bicycle lifting seat tube, including outer tube, inner tube, bush, sealing assembly and buffer ring. Inner tube can move up and down in the outer tube, and bush is equipped between inner and outer tube, and top end has upper abutting part. Sealing assembly is equipped between inner and outer tube, has annular inner ring shoulder, effectively blocks liquid and solid material to enter seat tube inside, keeps clean. Buffer ring is equipped between sealing assembly inner ring shoulder and bush upper abutting part, absorbs impact and vibration in the process of lifting, reduces the wear and tear between inner tube and bush, disperses reaction force, reduces stress concentration, improves durability and impact resistance, and keeps stable cooperation, avoids shaking and abnormal sound, ensures that lifting is smooth and comfortable. The utility model effectively solves the problems, such as seat tube subsidence, shaking, abnormal sound and wear and tear, improves stability and durability, and improves riding experience.

The application relates to the technical field of positioning of main reinforcement of a steel reinforcement cage, and discloses a double-layer adjustable main reinforcement positioning device for a steel reinforcement cage, which comprises a sliding rail, a bottom plate is fixedly installed on the upper portion of a sliding rail moving seat, an adjusting mechanism is fixedly installed on the upper portion of the bottom plate, the adjusting mechanism comprises a driving assembly and an adjusting assembly, is used for height adjustment of the device, a positioning mechanism is fixedly connected to the output end of the adjusting mechanism and is used for positioning the steel reinforcement cage, a plurality of fixing mechanisms are arranged outside the positioning mechanism, the fixing mechanisms comprise sliding assemblies and connecting assemblies and are used for fixing the steel reinforcement cage. The outer ring of the main reinforcement is marked with a scale with a graduation precision of +0.5 DEG, construction personnel calculate the main reinforcement distribution angle according to the scale and design drawings, the slidable fixing sliding block, the cylindrical main reinforcement connector and the cylindrical jacket are used for accurately adjusting the main reinforcement position and the diameter of the steel reinforcement cage, and high-precision positioning of the main reinforcement of the steel reinforcement cage is realized.