69results about How to "Efficient automation" patented technology

The invention relates to a data annotation method and device, equipment and a readable storage medium. The data annotation method comprises the following steps: firstly, inputting to-be-annotated data and cue words into a first pre-trained large language model, generating a first prediction data annotation result, analyzing the confidence coefficient of the first prediction data annotation result, and generating a first data annotation result based on a result conforming to a first confidence coefficient threshold value; and inputting a result which does not accord with the first confidence threshold value into a second pre-trained large language model for re-labeling, analyzing the confidence, and generating a second data labeling result. And performing manual annotation on the result which does not accord with the second confidence threshold, and finally combining the first, second and manual annotation results to determine a final annotation result. According to the method, through automatic annotation and confidence analysis of a multi-round pre-trained large language model, and in combination with manual annotation, low-confidence tasks are processed, so that the annotation accuracy and efficiency are remarkably improved, and the dependence on manual intervention is reduced.

The invention discloses a multifunctional automatic tooth socket locking device which comprises a working machine table, and the working machine table is provided with a feeding unit, a feeding station, a wire twisting unit, a detection unit and a discharging unit, and the feeding station, the wire twisting unit, the detection unit and the discharging unit are sequentially arranged around the feeding unit; through the feeding unit, and the wire twisting unit, the detection unit and the discharging unit which are arranged around the feeding unit, the machining process of feeding, assembling, detecting and discharging of product thread sleeve machining can be achieved; the machining effects of automatic material taking, assembling and tail punching of thread sleeve machining are achieved through the twisting unit of a three-axis driving structure; efficient automation is achieved in the machining process, and the machining efficiency and the machining quality can be effectively guaranteed; the secondary detection effect after the thread sleeve is machined can be achieved through the detection unit, and the high-precision machining effect of thread sleeve machining can be ensured; and the assembling equipment can adapt to assembling work of various types of products and various sizes of threaded sleeves, and has the advantages of being high in machining adaptability and wide in machining range.

The invention belongs to the technical field of ice prevention and removal, and relates to a combined unmanned aerial vehicle automatic deicing system. The system comprises a deicing controller, and an icing detection subsystem, an engine air inlet channel anti-icing subsystem and a wing empennage airbag deicing subsystem which are connected with the deicing controller, the icing detection subsystem is used for detecting whether the unmanned aerial vehicle is iced or not and the icing degree and outputting an icing signal; the deicing controller controls whether the engine air inlet channel anti-icing subsystem and the wing empennage air bag deicing subsystem work or not according to icing signals output by the icing detection subsystem.

The utility model relates to the technical field of feeding devices, in particular to an intelligent sodium carbonate and acetic acid proportioning and feeding device, which comprises a feeding platform and is characterized in that a sodium carbonate feeding device is arranged on one side of the feeding platform, a sodium acetate feeding device is arranged on the other side of the feeding platform, and the sodium carbonate feeding device and the sodium acetate feeding device respectively comprise a stock bin. A feeding pipe is arranged in the center of the top of the stock bin, a filtering assembly is arranged on the top of the feeding pipe, a metering valve is arranged at the junction of one side of the bottom of the feeding pipe and the stock bin, a monitoring sensor is arranged on one side of the stock bin, the bottom of the stock bin is connected with a mixing assembly, and the bottom of the mixing assembly is connected with a reaction kettle. High efficiency and automation are achieved, the complexity of manual operation is reduced, and the production efficiency is improved; the proportioning is accurate: through the associated cooperation of a high-precision metering valve, a monitoring sensor and a control box, the adding amount and the proportioning of sodium carbonate and acetic acid can be accurately controlled, and the stability of the product quality is ensured; the operation is simple.

The invention belongs to the technical field of computer vision, and discloses an arm movement automatic evaluation system and method for dyskinesia of a cerebral palsy patient, and the system is characterized in that a data collection module carries out the movement data collection of the movement task of the arm of the patient through a smart phone camera; the posture estimation and key point detection module uses a posture estimation algorithm to automatically detect and track arm movement of a patient and recognize key points of a human body, and after coordinate data of the key points are obtained, data preprocessing is carried out; the muscular dyskinesia feature extraction module extracts muscular dyskinesia features from the motion data of the arm of the patient and constructs a corresponding feature set; the automatic scoring module uses a multi-layer feedforward neural network model to automatically calculate the score of the muscular dystonia based on the arm movement characteristics of the patient; the report generation module is used for generating an evaluation report. The method is suitable for arm movement evaluation of myodynia of cerebral palsy patients, and an objective, convenient and efficient evaluation tool is provided for clinicians.

The invention belongs to the field of offshore wind power, and discloses an on-board grouting pipeline automatic transporting and assembling method which comprises the steps that 1, a pipeline is clamped through a pipeline clamping, lifting and transporting device, and the pipeline is moved to a pipeline centering, clamping and transporting device; 2, the pipeline is clamped and conveyed through a pipeline centering, clamping and conveying device, so that the pipeline is centered, and the pipeline is conveyed to a pipeline assembling and butting device; and 3, the pipelines are subjected to up-down butt-joint assembly through the pipeline assembly butt-joint device. Pipeline sections are connected through threads, and automatic installation of the pipelines is achieved.

The utility model discloses a hinge nailing machine for machining a mirror frame, which comprises a machine base and a mirror frame conveying assembly, and the mirror frame conveying assembly is arranged on the machine base and is used for placing the mirror frame; the mirror frame placing assembly is arranged on the machine base and located at the output end of the mirror frame conveying assembly, and the mirror frame placing assembly is used for receiving the mirror frames output by the mirror frame conveying assembly and clamping the mirror frames; the multi-shaft driving assembly is arranged on the machine base, and the multi-shaft driving assembly is used for providing a plurality of axial movement tracks; the mirror frame machining assembly is arranged on the multi-axis driving assembly, and mirror frame machining units can move along with the multi-axis driving assembly and conduct punching treatment on mirror frames on the mirror frame containing assembly; and the hinge conveying assembly is arranged on the machine base. According to the utility model, conveying, fixing and processing of the mirror frame, conveying and assembling of the hinge and final discharging can be automatically completed, so that the production efficiency is greatly improved.

The invention discloses a data acquisition and automatic control system for a carbon filament collecting machine, which adopts a modular design and comprises a main control module for connecting and controlling other modules, and a plurality of functional modules such as a display and operation interface module, a real-time monitoring module, a fault detection and early warning module, a shredding control module, a label printing module and a multi-device adaptation module. The system is realized on the basis of an MVVM (Model-View-ViewModel) architecture of a WPF (Wireless Power Function), and has good expansibility and maintainability. The system uses the SQL Server as a database, and the EFCore performs data operation, so that data access is more efficient and flexible. Meanwhile, the system supports parallel operation of a plurality of wire collecting machines, each wire collecting machine is managed through an independent thread, concurrence conflicts are avoided, PLC data can be obtained in real time, wire collecting machine equipment can be dynamically managed, and a proper label template is automatically selected for printing according to batch information.

The utility model provides a multi-station press machining system, and belongs to the technical field of machining equipment. The problem that in the prior art, a press is low in automation degree is solved. The multi-station press machining system comprises a rack and a rotating station module connected to the rack, and the rotating station module comprises a rotating disc and a power assembly used for driving the rotating disc to rotate in an indexing mode; the at least two workpiece fixing modules are connected to the rotary table, and each workpiece fixing module is provided with a machining station used for containing a workpiece; the stamping execution module is connected to the rack, and the stamping execution module comprises a stamping execution piece and a stamping driving piece used for driving the stamping execution piece to move up and down in the vertical direction; and the at least one workpiece transfer module is connected to the rack, and the output end of the station transfer module is provided with a clamping jaw used for feeding unmachined workpieces and discharging machined workpieces. The device has the advantages of high efficiency and automation.

The application provides an animal multi-task joint detection method, system, device and medium based on infrared camera images, which comprises the following steps: acquiring an infrared image containing a target animal; preprocessing the infrared image to obtain a preprocessed infrared image; inputting the preprocessed infrared image into a trained target animal information detection model for feature extraction to obtain a multi-scale feature map group; the target animal information detection model is obtained by training a preset neural network with a target loss function according to a disturbed infrared image training set; and the multi-scale feature map group is detected and processed by multiple parallel task detection channels of the target animal information detection model to obtain detection information of the target animal in the infrared image, so that the species, gender and age category of the animal are accurately identified.

The application discloses a PCB oxidation-preventing treatment device, and relates to the oxidation-preventing treatment field of pretreatment plates, which comprises a main frame body, a spraying box body is arranged on the upper surface of the main frame body, and a micro-etching mechanism is arranged on the upper surface of the main frame body. The micro-etching mechanism comprises a cleaning assembly and a soaking assembly. The cleaning assembly comprises a sliding table body, the sliding table body is arranged on the upper surface of the main frame body, one side surface of the sliding table body is further provided with a sliding groove, one side of the inside of the sliding groove is provided with a bottom protruding block, and the inside of the sliding groove is provided with a limiting sleeve block. The soaking assembly comprises a vertical sliding rail, the bottom surface of the vertical sliding rail is connected with one side surface of a liquid pool bottom plate, and the inside of the vertical sliding rail is provided with an internal hydraulic rod. In the scheme, the micro-etching mechanism can efficiently remove the oxidation layer and pollutants of the pretreatment plate, provide a clean surface, and can also realize operations such as vibration liquid removal, liquid filtration and purification, and concentrated liquid recycling, so that the treatment effect and resource utilization rate are improved.

The present disclosure provides a data fitting method, device and computer equipment for application-specific integrated circuit, relates to the technical field of computer and artificial intelligence, and the scheme is: a self-defined floating-point number model is constructed; fitting control parameters are initialized; based on the self-defined floating-point number model and the fitting control parameters, segmented fitting processing is performed on a target continuous function to obtain a segmented fitting result; based on the self-defined floating-point number model and fitting related parameters, verification processing is performed on the segmented fitting result to obtain a verification result; iterative optimization processing is performed on the fitting related parameters to obtain optimized fitting related parameters; the segmented fitting result is updated based on the optimized fitting related parameters, and error compensation processing is performed on the segmented fitting result to obtain compensated fitting related parameters; and the compensated fitting related parameters are mapped to hardware implementation code, so that the precision, hardware cost and delay can be considered, and the function fitting and hardware implementation efficiency are improved.

The invention discloses a suspension mold cleaning production line which comprises a cover mold conveying device, a cover mold suspension device and a suspension mold cleaning device, and the cover mold conveying device can convey a cover mold to a first position; the cover mold suspension device is used for extending to a first position to grab the cover mold and then moving the cover mold to a second position; the suspended mold cleaning device can move to the position below the cover mold at the second position to clean the cover mold. A buffer structure is arranged to accurately clean the convex positions, damage is reduced, through integration of the advanced automation technology and efficient cleaning equipment, whole-process automatic operation of cover mold cleaning is achieved, the cleaning efficiency and quality are improved, the labor cost is reduced, meanwhile, the flexibility and adaptability of a production line are enhanced, and the production efficiency is improved. And the urgent requirements of the concrete prefabricated part production industry for efficient, high-quality and low-cost cleaning solutions are met.

The utility model discloses a cable stripping pliers improvement structure for electrical engineering relates to cable stripping pliers technical field, including the handle, the handle side end is connected with the fixed block, the fixed block side end is provided with the peeling mechanism, and the peeling mechanism includes: fixed shell, fixed shell is connected in the fixed block side end, and the fixed shell side end is set to the gap, drive motor is connected in the fixed shell outer end, the rotary ring is rotatably connected in the fixed shell, and the rotary ring side end is provided with the gap, two no. The utility model discloses design structure reasonable, it can clamp fixed cable, complete cutting to cable outer skin, can pull apart the cable outer skin of cutting and separate, thereby complete stripping, and its operation is simple, does not need manpower to pull apart cable outer skin, and the whole stripping process is coherent, and its high -efficient automation can improve work efficiency greatly, and alleviate the labor intensity of staff.

The present application relates to a plug assembly device for the production of metal connecting pipes, comprising: a loading unit provides a target plug; a conveying unit conveys at least one target plug provided by the loading unit to the end of the conveying unit; a third moving unit moves at least one target plug at the end of the conveying unit to a gripping mechanism one by one; the gripping mechanism grabs the target plug, and the grabbed target plug moves from a first position to a second position; the first moving unit moves the target plug from the second position to a third position; the clamping unit clamps the target metal connecting pipe to move from a fourth position to a fifth position; when the target plug is in the second position or the third position, and the target metal connecting pipe is in the fourth position or the fifth position, the target plug is coaxial with the target metal connecting pipe. The present application solves the problem of low automation and low production efficiency caused by the need for workers to manually install the plug during the plugging process in the production process of the metal connecting pipes of the indoor and outdoor units of the air conditioner.

The invention discloses a pipe fixing and traction device for cable protection pipe machining, and relates to the technical field of pipe fixing and traction. The device comprises a base, a control assembly is arranged on the front face of the base, a device body is arranged in the base, a traction assembly is arranged on the right side of the device body and driven by an external motor, a workbench is arranged in the device body, supporting plates are symmetrically arranged on the top of the workbench, and an electric telescopic rod is arranged on the top of the inner wall of the device body. Cutting assemblies are arranged at the bottoms of the telescopic ends of the electric telescopic rods. And an anti-separation device is arranged in the device main body. The clamping strength of the included angle in the arc-shaped clamping plate to the pipe is improved through the arc-shaped rubber piece, it is guaranteed that the pipe has good stability in the cutting process, the situation that the outer wall of the pipe is separated from the inner wall of the arc-shaped clamping plate, consequently, the clamping compactness is reduced is avoided, and the situation that the section is rough due to shaking of the pipe in the cutting process is prevented.

A fixture for fixing and welding a BMS board to a battery cell includes a base with a cavity for holding the BMS board and the battery cell. The cavity has a through hole at its bottom for the battery cell leads to extend out. Two or more first magnets are symmetrically arranged in two rows on the base, located on either side of the cavity. A cover plate is placed on the base to fix the BMS board and battery cell within the cavity; the cover plate has at least one welding hole on its upper part. Two second magnets, the same number as the first magnets but with opposite magnetic properties, are symmetrically arranged in two rows on the lower part of the cover plate, corresponding to the positions of the first magnets, so that when the cover plate is placed on the base, the first and second magnets attract each other. This invention, through the positioning of the cavity, ensures the accuracy of the relative position between the battery cell assembly and the BMS board, and precisely positions the B+, B-, B1, and B2 welding points, greatly improving the welding yield.

The invention discloses an efficient intelligent service platform based on a low-zero integration technology, and belongs to the technical field of software system development, and the platform comprises an identity authentication engine system which is used for simplifying data authority configuration and finely controlling role access authority and security control; the form engine system is used for generating, managing and processing electronic form information; the process engine system is used for defining, executing and monitoring internal and cross-department business process information of the organization; the customized component library is used for quickly establishing a service scene related function module; and the system maintenance management system is used for monitoring the state of the service platform, preventing faults, executing regular maintenance tasks, quickly responding to problems and optimizing the performance of the service platform. The invention provides a low-cost and no-cost integrated development platform for business application, which not only closely meets the requirements, but also greatly promotes the service digitization and intellectualization.

The utility model discloses a material taking mechanism with an adjustable distance. The material taking mechanism comprises a support, a two-axis moving system arranged on the support, a distance adjusting assembly arranged at the output end of the two-axis moving system and two clamping assemblies arranged on the distance adjusting assembly. The distance adjusting assembly comprises a supporting plate, a distance adjusting air cylinder arranged on the supporting plate, two sliding rails arranged on the supporting plate in an arrayed mode, and a distance adjusting supporting plate arranged on the sliding rails in a sliding mode and connected with the output end of the distance adjusting air cylinder. And the fixed support plate is fixedly arranged on the support plate and is positioned on one side of the slide rail. The output direction of the distance adjusting air cylinder is parallel to the length direction of the sliding rail, and the distance adjusting supporting plate and the fixed supporting plate are each provided with a clamping assembly. According to the mechanism, the distance adjusting supporting plates are driven by the distance adjusting air cylinders to move, so that the distance between the two motor coils clamped by the distance adjusting supporting plates is changed, and then distance adjusting operation is completed.

The application relates to the field of glass tube heaters and preparation technology thereof, in particular to a glass tube heater and an electric heating wire forming device. The glass tube heater comprises a nickel-chromium alloy electric heating wire which is wound into a non-circular cross-section coil, wherein the cross-section of the coil can be a polygon and has smooth round corners, preferably a central symmetrical hexagonal star shape, six corners are arranged along the radial direction and two edges are parallel to each other. In addition, an electric heating wire forming device for manufacturing the above-mentioned glass tube heater is also provided, which comprises an inner clamp and an outer stamping clamp, the cross-section profile of the inner clamp is the same as the cross-section inner profile of the non-circular coil, the outer stamping clamp comprises a plurality of stamping heads and a linear driving component, and a guide sleeve and a retraction cylinder. Through optimization of the electric heating wire shape and the forming process, the application improves the heating efficiency and the service life, and simplifies the production process.

The utility model discloses a roller coating processing device for a door pocket, which is used for solving the problems that the temperature of the door pocket in the subsequent processing is still higher and the processing quality and the processing efficiency are influenced due to the fact that the existing gluing device is usually not provided with a special cooling unit after being dried, and comprises a base and a conveying unit, the conveying unit is used for providing a moving track; the dust removal unit is arranged on the conveying unit; the roller coating unit is located at the output end of the dust removal unit; the drying unit is located at the output end of the conveying unit; and the cooling unit is located at the output end of the drying unit. The full-process automatic processing of the door pocket from dust removal to painting, drying and cooling is realized, and the production efficiency is greatly improved.

This invention belongs to the field of welding processing technology, and specifically relates to a welding equipment for a ring main unit gas box. It includes a welding table and welding robots located on both sides of the welding table, as well as a positioning component, a welding residual stress relief component, and a sealing performance testing component fixed on the welding table. The welding residual stress relief component is located inside the positioning component; a transfer component is provided on the outer side of the welding table, and a top pressing component is fixed to the moving end of the transfer component, located directly above the positioning component. This invention integrates positioning, welding, stress relief, and sealing performance testing into one process. It relies on internal and external composite positioning to ensure the clamping accuracy of the sheet metal, utilizes weighing matching parameters to achieve precise adaptive vibration aging, and is equipped with an integrated positive pressure leak detection system. The entire process is automated, eliminating the need for workpiece transfer. While improving production efficiency and avoiding the risk of injury from impacts, it reduces leakage defects caused by welding deformation and residual stress from the source.

The utility model relates to the technical field of tubular product positioning, and provides a tubular product on-line automatic identification feature point positioning mechanism, which comprises a servo motor, a positioning mechanism and a positioning mechanism, the linear sliding module is mounted at the output end of the servo motor; the connecting plate is fixed on the linear sliding module; the longitudinal adjusting rod is fixedly mounted on one side of the connecting plate, and a photoelectric detector is mounted on one section of the longitudinal adjusting rod; the action air cylinder is arranged at one end of the longitudinal adjusting rod, and a longitudinal adjusting plate is arranged at the top of the action air cylinder; and the stepping motor is installed on one side of the longitudinal adjusting plate, and the output end of the stepping motor extends downwards and is fixedly provided with a rolling wheel. According to the utility model, the accuracy of subsequent processing or detection procedures is ensured, and the product quality is improved.

The utility model discloses a multifunctional integrated storage tank which comprises a tank body, a weighing module, a PH detection device and a quick-opening tank cover. The tank body is mounted on the weighing module, and the weighing module is used for weighing materials in the tank body; the PH detection device is mounted on the tank body and is used for detecting the PH of materials in the tank body; the quick-opening tank cover is detachably installed at an upper opening of the tank body, a feeding connector and an exhaust connector are installed on the quick-opening tank cover, and a discharging connector is installed at the bottom of the tank body. The pH detection device has multiple functions of weighing, pH detection, quick-opening structure and the like.

The invention relates to the technical field of biosensors, in particular to a high-reliability biosensor based on a ReS2 / PVP nano composite material, a manufacturing process and application. The biosensor is prepared by taking an LCP (Liquid Crystal Polymer) copper interdigital electrode as a basic electrode and depositing a sensing layer on the basic electrode; the prepared biosensor has the advantages of being small in size, wearable, high in reliability, sensitive in reaction, simple in detection technology and low in production cost, has selectivity on adenosine triphosphate (ATP), has a wide application prospect, and particularly has a good application prospect when being applied to a tumor radiotherapy respiratory gating system. The real-time continuous respiration monitoring can be carried out.

The utility model discloses an automatic turnover device which comprises a conveying line used for conveying products; the fixing plate is arranged on one side of the conveying line; the sucking disc is mounted on the fixing plate and is used for adsorbing the product; the rotating air cylinder is connected with the fixing plate and used for driving the fixing plate and the adsorbed product to rotate by 180 degrees; and the control unit comprises a PLC (Programmable Logic Controller) and an electromagnetic valve and is configured to control the adsorption and release of the sucking disc and the rotating direction of the rotating air cylinder. Tests show that the efficiency of a production line adopting the device is improved by 40%, the labor cost is reduced by 60%, the failure rate is smaller than or equal to 0.5 times per thousand hours, and the device has remarkable industrial popularization value.

The utility model relates to a kind of cloth pressing clamping frame structure applied to embroidery machine, belongs to embroidery machine technical field, including embroidery machine frame, the embroidery machine frame is equipped with clamping frame, the upper end of the clamping frame is equipped with several rotating arms with the pivot type insertion of embroidery machine frame, the side of the clamping frame is equipped with air pipe, the air pipe is equipped with air pipe fixed terminal with air pipe and clamping frame intercardiac embedding fixed, the clamping frame is equipped with a pair of extension and the pressing plate of clamping frame lower end.With the characteristics of simple structure, convenient operation and good running stability. Through optimization structure to improve the stability of cloth fixed, convenient operation and the reliability of overall structure. Realize the perfect combination of efficient automation, convenient operation, cloth friendly and reliable operation, significantly improve the overall performance of embroidery machine and embroidery quality.

The utility model discloses a full-automatic multi-station drying device for semiconductor wafers, and relates to the technical field of semiconductor manufacturing equipment. The device comprises symmetrically arranged base plates, a conveying platform between the base plates, and a drying cabin mounted in the middles of the base plates. The drying cabin body is divided into a pretreatment area, a main drying area and a cooling area through four sets of lifting type isolation doors, and channels are formed in the bottoms of the isolation doors and driven by independent motors. An infrared radiation heating array is arranged on the inner wall of the main drying area, and an air cooling hole channel communicated with a cooling fan is formed in the inner wall of the cooling area. The material transfer trolley slides on the conveying platform through a guide rail, and a bearing bracket of the material transfer trolley is provided with a wedge-shaped locking block driven by a double-torsion spring and used for locking a wafer carrying disc with a conical positioning boss. The propelling mechanism enables the push rod to be matched with the positioning support to achieve automatic transfer of the transfer trolley. According to the utility model, the full-flow closed automatic operation of wafer drying-cooling is realized, the problem of temperature fluctuation is solved, and the yield is improved by more than 15%.

This utility model discloses an intelligent automatic uncoupling robot system for railway freight cars, including an information system, a monitoring system, an uncoupling robot trolley, and an early warning system. The information system is used to collect freight car information, confirm the uncoupling robot trolley that needs to be uncoupled according to the plan, and calculate the time required for the freight car to move from the uncoupling position to the corresponding uncoupling robot trolley position. The monitoring system is used to monitor the movement of the uncoupling robot trolley and determine whether there are any abnormalities in the uncoupling operation and uncoupling conditions. The uncoupling robot trolley is used for autonomous driving, autonomously determining the uncoupling position and performing the uncoupling operation, autonomously returning to its original position, monitoring and sending the status information of the uncoupling robot trolley, receiving control commands, and adjusting the status of the uncoupling robot trolley according to the status information or control commands. The early warning system is used to receive and provide feedback on abnormal information of the uncoupling operation and abnormal information of the uncoupling conditions of the uncoupling robot trolley.

The utility model discloses a conductive foam rapid attaching jig, and relates to the field of conductive foam jigs. The device comprises the jig, the jig comprises the jig main body, the jig groove is formed in the middle of the top of the jig main body, the placing base is arranged at the bottom of the jig main body, the feeding mechanism is arranged, the placing base and the placing groove allow a plurality of pieces of conductive foam to be stored at a time, continuous operation is facilitated, and the production efficiency is improved. Compared with the prior art, time for workers to frequently replace materials is shortened, meanwhile, the storage and taking efficiency of the materials is also improved through the design, the conductive foam can be moved out of the jig in order through the design of the discharging opening, and attaching operation is prepared, and in addition, through the mounting rod, the connecting base, the connecting rod and the movable plate, the conductive foam can be conveniently and rapidly taken out. It is ensured that the conductive foam can stably and accurately move to the discharging port from the containing groove, the overall weight is reduced due to selection of aluminum alloy materials, and meanwhile the structural strength and durability are ensured.