Method and system for evaluating deflection of side fork AGV (Automatic Guided Vehicle), and storage medium

Abstract

The invention discloses a side fork AGV whole vehicle deflection evaluation method and system and a storage medium, and relates to the technical field of data processing. The method comprises the following steps: establishing a finite element model of the side fork AGV; solving and analyzing the load simulation combinations in sequence to obtain an AGV whole vehicle stress distribution parameter set; deflection calculation is carried out, and a multi-load AGV whole vehicle deflection calculation result is obtained; comparing and evaluating the calculation result to obtain a deflection safety evaluation coefficient; carrying out identification and stability evaluation on the compression member to obtain a whole vehicle instability evaluation coefficient; and carrying out structure adjustment optimization on the target side fork AGV based on the deflection safety evaluation coefficient and the whole vehicle instability evaluation coefficient. The technical problem that in the prior art, the whole vehicle deflection and stability of the side fork AGV under different loads are difficult to evaluate is solved, comprehensive evaluation of the whole vehicle deflection and stability of the AGV is achieved through finite element analysis and deflection calculation, and the technical effect of improving the safety and stability of the AGV is achieved.

Description

Technical Field

[0001] The present invention relates to the field of data processing technology, and in particular to a method, system and storage medium for evaluating the deflection of a side fork AGV. Background Art

[0002] With the rapid development of automation technology, automatic guided vehicles (AGVs) have been widely used in logistics, warehousing, production and other fields. As a common transportation equipment, side-fork AGVs are flexible and efficient in handling and stacking items. However, in actual application, due to the large load carried by the side-fork AGV and the frequent changes in different loads and working environments, the deflection and stability of the entire vehicle have become important factors affecting its performance and safety. In the prior art, the structural design and performance evaluation of AGVs mainly rely on static analysis or simple finite element analysis methods. These methods are difficult to accurately evaluate the deflection distribution of the AGV under multiple load conditions and cannot fully reflect the dynamic performance of the AGV in actual work. Especially under multiple load conditions, the deflection and stability of the entire vehicle will be affected by complex factors, and traditional evaluation methods are difficult to meet the design requirements of modern side-fork AGVs. Summary of the invention

[0003] The present application provides a method, system and storage medium for evaluating the whole vehicle deflection of a side fork AGV, which solves the technical problem in the prior art that it is difficult to evaluate the whole vehicle deflection and stability of a side fork AGV under different loads.

[0004] In view of the above problems, the present application provides a method, system and storage medium for evaluating the deflection of a side fork AGV vehicle.

[0005] In a first aspect of the present application, a method for evaluating the deflection of a side fork AGV vehicle is provided, the method comprising:

[0006] Perform key mechanism identification and finite element analysis on the target side fork AGV, and establish a side fork AGV finite element model; determine the load simulation combination, and apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis to obtain the AGV vehicle stress distribution parameter set; perform deflection calculation on the AGV vehicle stress distribution parameter set respectively to obtain the multi-load AGV vehicle deflection calculation result; compare and evaluate the multi-load AGV vehicle deflection calculation results based on the deflection limit to obtain the deflection safety assessment coefficient; identify and evaluate the stability of the compressed components in the side fork AGV finite element model to obtain the vehicle instability assessment coefficient; perform structural adjustment and optimization on the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient.

[0007] The second aspect of the present application provides a side fork AGV vehicle deflection assessment system, the system comprising:

[0008] Model building module: perform key mechanism identification and finite element analysis on the target side fork AGV, and establish a side fork AGV finite element model; solution analysis module: determine the load simulation combination, apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis, and obtain the AGV vehicle stress distribution parameter set; calculation module: perform deflection calculation on the AGV vehicle stress distribution parameter set respectively, and obtain the multi-load AGV vehicle deflection calculation result; comparison and evaluation module: compare and evaluate the multi-load AGV vehicle deflection calculation results based on the deflection limit value, and obtain the deflection safety assessment coefficient; stability assessment module: identify and evaluate the stability of the compressed components in the side fork AGV finite element model, and obtain the vehicle instability assessment coefficient; optimization module: perform structural adjustment and optimization on the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient.

[0009] The third aspect of the present application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the side fork AGV vehicle deflection evaluation method provided in the present application.

[0010] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0011] First, the key mechanism identification and finite element analysis of the target side fork AGV are carried out, and the finite element model of the side fork AGV is established. Then, the load simulation combination is determined, and the load simulation combination is applied to the side fork AGV finite element model in turn for solution analysis to obtain the stress distribution parameter set of the AGV vehicle. Then, the deflection calculation of the stress distribution parameter set of the AGV vehicle is performed respectively to obtain the deflection calculation results of the multi-load AGV vehicle. Further, the deflection calculation results of the multi-load AGV vehicle are compared and evaluated based on the deflection limit to obtain the deflection safety assessment coefficient. At the same time, the compression components in the side fork AGV finite element model are identified and the stability assessment coefficient of the vehicle is obtained. Finally, the target side fork AGV is structurally adjusted and optimized based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient. The technical problem that it is difficult to evaluate the deflection and stability of the side fork AGV under different loads in the prior art is solved. Through finite element analysis and deflection calculation, a comprehensive evaluation of the deflection and stability of the AGV vehicle is achieved, and the technical effect of improving the safety and stability of the AGV is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 A schematic diagram of the flow chart of the method for evaluating the deflection of a side fork AGV vehicle provided in an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the structure of the side fork AGV vehicle deflection assessment system provided in an embodiment of the present application.

[0015] Explanation of the reference numerals: model building module 11 , solution analysis module 12 , calculation module 13 , comparison and evaluation module 14 , stability evaluation module 15 , optimization module 16 . DETAILED DESCRIPTION

[0016] The present application solves the technical problem in the prior art that it is difficult to evaluate the whole vehicle deflection and stability of the side fork AGV under different loads by providing a side fork AGV whole vehicle deflection evaluation method, system and storage medium.

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] It should be noted that the terms "including" and "having" are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or modules that are not explicitly listed or are inherent to these processes, methods, products or devices.

[0019] Embodiment 1, as Figure 1 As shown, the present application provides a method for evaluating the deflection of a side fork AGV vehicle, wherein the method comprises:

[0020] The key structures of the target side-fork AGV are identified and finite element analysis is performed, and a finite element model of the side-fork AGV is established.

[0021] By identifying the key structural components of the side-fork AGV and establishing its finite element model using the finite element analysis (FEA) method, a basis is provided for subsequent load analysis and deflection calculation.

[0022] First, for the target side fork AGV, identify the important components and mechanisms in its structure, usually including the frame, side fork, drive system, support system, etc.; through engineering experience and design drawings, analyze which components play a key role in the overall deflection, stability and load-bearing capacity of the vehicle. Next, perform finite element analysis (FEA) on the identified key mechanisms. The finite element model decomposes the structure of the entire AGV into a finite number of small units (for example, the grid of the frame and side fork), and assumes that the response of these units can be described by mathematical equations; use finite element analysis software (such as ANSYS, Abaqus, etc.) to model the target AGV to ensure that the model can reflect the physical properties of the real structure (such as material, size, connection method, etc.).

[0023] Furthermore, the establishment of the side fork AGV finite element model includes:

[0024] Identify the key mechanisms of the target side fork AGV to obtain a key mechanism set; obtain the design parameters of the target side fork AGV, set parameters for the key mechanism set and model the whole vehicle based on the design parameters, and generate a three-dimensional solid model of the AGV; determine the mesh type and mesh density according to the deflection analysis requirements and model complexity; mesh and perform finite element analysis on the AGV three-dimensional solid model based on the mesh type and mesh density, and establish the finite element model of the side fork AGV.

[0025] Specifically, the key mechanism of the target side fork AGV is identified, that is, the various components of the AGV are analyzed to identify the key components that play a decisive role in the deflection and stability of the whole vehicle, usually including the frame, side fork, support system, drive system and other key components. These key components constitute a key mechanism set; the design parameters of the target side fork AGV are obtained, including the geometric dimensions, materials, load capacity, kinematic parameters, etc. of the AGV. Based on these design parameters, the parameters of the identified key mechanism set are set and the whole vehicle is modeled to generate a three-dimensional solid model of the AGV. According to the deflection analysis requirements and model complexity, select the appropriate mesh type and mesh density. Generally, more complex components and areas with greater stress will use higher density meshes, while for parts with simpler mechanical properties, lower density meshes can be used. For example, if the analysis goal is to accurately evaluate the deflection distribution of the AGV, especially when performing detailed stress and deflection analysis at key locations (such as frame connections, side fork support points, etc.), a higher density mesh should be selected to ensure that subtle deformation and stress changes can be captured. For simpler or less stressed areas, the mesh density can be appropriately reduced to reduce computing time and resource consumption. For components with complex geometries or drastic force changes (such as steering systems, power transmission systems, etc.), finer meshes (for example, tetrahedral meshes or high-order mesh elements) are required to more accurately simulate their deformation characteristics. For parts with simpler geometries or more uniform forces, coarser meshes (such as hexahedral meshes or low-order elements) are sufficient to meet the analysis requirements. Based on the selected mesh type and mesh density, the three-dimensional solid model of the AGV is meshed and analyzed using finite element analysis software to obtain the stress, strain, deflection and other response parameters of each unit, thereby establishing a complete finite element model of the side-fork AGV, providing a basis for subsequent performance evaluation and structural optimization.

[0026] Determine a load simulation combination, apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis, and obtain the AGV vehicle stress distribution parameter set.

[0027] According to the actual working environment and operating conditions, determine the load combinations that the AGV may encounter under different operating conditions; apply the determined load simulation combinations to the finite element model of the side fork AGV one by one. The load can be applied directly to certain parts of the model (such as the frame, side fork, wheel axle, etc.) or to the support points, contact surfaces and other areas of the AGV to simulate the actual working conditions; on the basis of the applied load, use finite element analysis software for solution analysis. At this time, the software will calculate the stress, strain, displacement and other response results of each unit according to the geometric characteristics, material properties, boundary conditions and load conditions of the model; through solution analysis, the stress distribution parameter set of the AGV vehicle under various load conditions is obtained.

[0028] Furthermore, the determining of the load simulation combination includes:

[0029] Obtain load type information, wherein the load type information includes permanent load, live load and wind load; analyze the working condition of the target side fork AGV based on the load type information to obtain a side fork AGV working condition load parameter set; simulate and combine the side fork AGV working condition load parameter set to determine the load simulation combination.

[0030] Specifically, the load type information related to the target side fork AGV is obtained, and the load types include permanent load, live load and wind load. Among them, the permanent load refers to the load that always exists in the normal working process of the AGV itself and its load, such as its own weight, cargo weight, mass of fixed parts, etc.; the live load refers to the load generated by dynamic factors (such as acceleration, braking, steering, etc.) during the operation of the AGV, which usually changes periodically; the wind load refers to the impact of wind in the external environment on the AGV, especially in a high wind speed environment, the wind load may have a greater impact on the stability of the AGV.

[0031] Through a detailed analysis of the working conditions of the target side fork AGV, based on different load types, we analyze the different load conditions that the AGV may encounter under various working conditions. For example, the operating status of the AGV under different loads (such as full load, no load), and its performance in different working environments (such as flat ground, ramps, and windy environments), we then determine its working condition load parameter set.

[0032] According to the working load parameter set, different types of loads are reasonably combined to form a variety of load simulation combinations, each of which represents the actual stress conditions of the AGV under different working conditions. For example, permanent loads, live loads and wind loads are combined to simulate various load combinations that may occur in actual work.

[0033] Deflection calculations are performed on the stress distribution parameter sets of the AGV vehicle to obtain deflection calculation results of the multi-load AGV vehicle.

[0034] According to the obtained stress distribution parameter set of the AGV vehicle, the deflection is calculated using the principles of mechanics. Deflection refers to the deformation of a structure under force, which is usually closely related to the elastic modulus, geometric shape and force conditions of the structure. The deflection calculation is usually based on the theory of elastic mechanics, and the deflection of the structure is derived according to the Young's modulus, Poisson's ratio and other properties of the material, as well as the applied stress.

[0035] Deflection calculations are performed for different load simulation combinations. Each load combination will produce different force effects, so the corresponding deflection performance will also be different. By calculating the stress distribution under different load conditions, the deflection value under each working condition is obtained. After the deflection calculation is performed on all load simulation combinations, the calculation results of the AGV vehicle deflection under different working conditions are obtained.

[0036] Furthermore, the calculation result of the deflection of the multi-load AGV vehicle is obtained, including:

[0037] Based on the key mechanism set, the stress distribution parameter set of the AGV whole vehicle is labeled and integrated to obtain the stress distribution parameter set of multi-load key mechanisms; according to the structural characteristics and load distribution characteristics of the key mechanism set, a deflection mechanics calculation formula set is selected; the deflection mechanics calculation formula set is applied to perform deflection calculation on the stress distribution parameter set of the multi-load key mechanisms respectively to obtain the deflection calculation result of the multi-load AGV whole vehicle.

[0038] For the stress distribution parameter set of the AGV vehicle, it is labeled and integrated based on the identified key mechanism set, that is, the stress distribution data under each load condition is associated with specific key components (such as frame, side fork, support system, etc.), to ensure that the stress data of each key mechanism under different load conditions can be correctly and clearly presented, and then obtain the stress distribution parameter set of multi-load key mechanisms; according to the structural characteristics (such as material, geometry, size, etc.) and load distribution characteristics (such as load size, direction, action position, etc.) of the key mechanism set of AGV, a suitable deflection mechanics calculation formula set is selected. For different types of key mechanisms (such as beams, plates, support points, etc.), different deflection calculation formulas may be used. For example, for long strip components, the bending deflection formula may be used; for compressed components, the buckling theory may be used for calculation; using the above selected deflection mechanics calculation formula set, the deflection calculation of the key mechanism stress distribution parameter set under multiple load conditions is performed respectively. Under each load condition, the deformation of each key mechanism is solved using the corresponding formula, so as to obtain the deflection calculation result of the AGV vehicle under each load condition.

[0039] The calculation results of the deflection of the multi-load AGV vehicle are compared and evaluated based on the deflection limit to obtain a deflection safety assessment coefficient.

[0040] Based on the design requirements, use environment, load capacity and other factors of AGV, a deflection limit is set. The deflection limit refers to the maximum deformation allowed for each component of AGV under various working conditions. The calculated deflection results of the AGV under multiple load conditions are compared with the set deflection limit. For the deflection results under each load condition, it is determined whether it exceeds the set limit. Based on the results of the comparative evaluation, the deflection safety assessment coefficient is calculated. The deflection safety assessment coefficient is usually calculated by comparing the ratio of the actual deflection under each working condition to the limit, reflecting the safety of the AGV structure under different loads.

[0041] Furthermore, obtaining the deflection safety assessment coefficient includes:

[0042] According to the calculation results of the multi-load AGV vehicle deflection, a vehicle deflection distribution diagram is generated; based on the calculation results of the multi-load AGV vehicle deflection, the deflection value is marked to obtain the multi-load maximum deflection value; the multi-load maximum deflection value and the deflection limit value are compared and evaluated in turn to obtain the deflection safety assessment coefficient.

[0043] Preferably, a vehicle deflection distribution diagram is generated based on the calculation results of the vehicle deflection of a multi-load AGV. The vehicle deflection distribution diagram shows the deflection of each component of the AGV under different working conditions, and usually graphically indicates the maximum deflection of different components, the deflection change area, and the stress concentration part; on the basis of the vehicle deflection distribution diagram, the deflection value is marked, that is, the corresponding deflection value is marked on each component and key structure, and the maximum deflection value is selected from each working condition under multi-load conditions as the multi-load maximum deflection value, which reflects the most serious deformation degree of the AGV under various working conditions; based on the obtained multi-load maximum deflection value, it is compared and evaluated with the pre-set deflection limit value, which is the maximum allowable deformation set according to the AGV design standards, safety requirements and working conditions; by comparing the ratio of the maximum deflection value to the limit value, the deflection safety assessment coefficient is obtained, and the deflection safety assessment coefficient represents the structural safety of the AGV under the selected working condition.

[0044] The compression components in the side-fork AGV finite element model are identified and stability evaluated to obtain the vehicle instability evaluation coefficient.

[0045] In the finite element model of the side-fork AGV, all compressive components are identified. The compressive components usually include the support beams of the frame, the support components of the side forks, the connecting components of the drive system, etc. These components will be subjected to external loads (such as cargo weight, acceleration, braking, etc.) or environmental factors (such as ramps, wind, etc.) when the AGV is running, and will be subject to greater pressure.

[0046] The identified compression members are evaluated for stability, especially whether they are prone to buckling or instability when subjected to compression. Buckling instability refers to the phenomenon that under the action of compression, the structure or member deforms, resulting in a sharp drop in bearing capacity.

[0047] After completing the stability assessment of the compressive components, the vehicle instability assessment coefficient is calculated. The vehicle instability assessment coefficient integrates the stability performance of all key compressive components and is used to indicate the instability risk of the vehicle under multiple working loads. The stability of each compressive component is independently assessed and its instability risk coefficient is calculated. This coefficient is generally the ratio of the buckling load to the actual load, indicating whether the component may buckle. The vehicle instability assessment coefficient is obtained by weighted averaging or integrating the stability assessment results of multiple compressive components. The vehicle instability assessment coefficient reflects the stability of the entire AGV under the working load.

[0048] Furthermore, obtaining the vehicle instability assessment coefficient includes:

[0049] The compressive components in the side-fork AGV finite element model are identified to obtain the AGV compressive component set; stability analysis is performed on the AGV compressive component set to obtain the critical instability load set of the compressive components; the instability situation is evaluated based on the critical instability load set of the compressive components to obtain the instability evaluation coefficient of the whole vehicle.

[0050] In the finite element model of the side fork AGV, all key components that bear compressive forces are identified, including the support beams of the frame, the support components of the side forks, and any components that are subjected to compressive loads in the working state; the components under compression are identified through the stress distribution data extracted from the finite element analysis (FEA) results to form a set of AGV compressive components; for each identified compressive component, a stability analysis is performed, focusing on evaluating whether it is prone to buckling instability under compression; the critical instability load of each compressive component is calculated using buckling theory (such as Euler buckling formula) to obtain a set of critical instability loads of compressive components; after obtaining the critical instability load of each compressive component, the instability of the entire vehicle is evaluated; the actual load under multiple load conditions is compared with the critical instability load of each compressive component, and the instability coefficient of each component (i.e., the ratio of the actual load to the critical load) is calculated; the instability coefficients of all compressive components are combined through weighted averaging to obtain the instability assessment coefficient of the entire vehicle.

[0051] The target side fork AGV is structurally adjusted and optimized based on the deflection safety assessment coefficient and the whole vehicle instability assessment coefficient.

[0052] According to the aforementioned deflection safety assessment coefficient and vehicle instability assessment coefficient, a comprehensive assessment is conducted on the existing structure of the target side fork AGV; if the deflection safety assessment coefficient is close to or greater than 1, it means that some components of the AGV have excessive deformation under the working load, which may affect the stability and working performance of the vehicle. At this time, it may be necessary to reinforce or optimize the design of the components with greater force; if the vehicle instability assessment coefficient is close to or greater than 1, it means that the AGV may suffer from buckling instability under certain working conditions, especially for compressive components. At this time, it may be necessary to optimize the geometry and material of these components or increase support to improve their stability.

[0053] Furthermore, the structural adjustment and optimization of the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient includes:

[0054] Based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient, a structural optimization analysis is performed on the target side fork AGV to determine a target AGV structural optimization strategy; and the target side fork AGV is structurally adjusted and optimized using the target AGV structural optimization strategy.

[0055] According to the deflection safety assessment coefficient and the vehicle instability assessment coefficient, the deflection and stability problems of the current structure of the target side fork AGV under different load conditions are analyzed. Specifically, key components and weak links that perform poorly in deflection and stability are identified, such as the frame, side fork support components, connection points, etc. In terms of deflection, the optimization goal is to reduce the excessive deformation of key components so that the deflection value does not exceed the set limit; in terms of stability, the optimization goal is to increase the critical buckling load of the compressed member to avoid instability. Based on existing engineering experience and technical solutions, select appropriate optimization methods to determine the target AGV structural optimization strategy; according to the determined optimization strategy, implement specific structural adjustments.

[0056] Furthermore, the determination of the target AGV structure optimization strategy includes:

[0057] Based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient, a structural optimization analysis is performed on the target side fork AGV to obtain multiple AGV structural optimization strategies; the multiple AGV structural optimization strategies are used to perform structural optimization simulations on the target side fork AGV respectively to obtain multiple AGV structural optimization effects; the multiple AGV structural optimization strategies are optimized according to the multiple AGV structural optimization effects to determine the target AGV structural optimization strategy.

[0058] Preferably, based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient, an in-depth analysis is conducted on the existing structure of the target side fork AGV to identify components and weak links with problems in deflection and stability, and then a number of structural optimization strategies are proposed, including enhancing structural stiffness, improving stability, redistributing loads or performing lightweight design; finite element analysis or other engineering simulation methods are used to simulate each optimization strategy separately, and the deflection change, stability improvement and load distribution effect under different load conditions are evaluated to obtain multiple optimization effects; based on the simulation results of each optimization scheme, multiple optimization strategies are optimized by comprehensively considering factors such as deflection, safety, cost, feasibility, weight and efficiency, and the most suitable structural optimization strategy for the target AGV is determined to ensure that the optimized structure can maintain reliability and efficiency while improving performance.

[0059] In summary, the embodiments of the present application have at least the following technical effects:

[0060] First, the key mechanism identification and finite element analysis of the target side fork AGV are carried out, and the finite element model of the side fork AGV is established. Then, the load simulation combination is determined, and the load simulation combination is applied to the side fork AGV finite element model in turn for solution analysis to obtain the stress distribution parameter set of the AGV vehicle. Then, the deflection calculation of the stress distribution parameter set of the AGV vehicle is performed respectively to obtain the deflection calculation results of the multi-load AGV vehicle. Further, the deflection calculation results of the multi-load AGV vehicle are compared and evaluated based on the deflection limit to obtain the deflection safety assessment coefficient. At the same time, the compression components in the side fork AGV finite element model are identified and the stability assessment coefficient of the vehicle is obtained. Finally, the target side fork AGV is structurally adjusted and optimized based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient. The technical problem that it is difficult to evaluate the deflection and stability of the side fork AGV under different loads in the prior art is solved. Through finite element analysis and deflection calculation, a comprehensive evaluation of the deflection and stability of the AGV vehicle is achieved, and the technical effect of improving the safety and stability of the AGV is achieved.

[0061] Embodiment 2, based on the same inventive concept as the method for evaluating the deflection of the side fork AGV vehicle in the above embodiment, Figure 2 As shown, the present application provides a side fork AGV vehicle deflection assessment system, wherein the system includes:

[0062] Model building module 11: perform key mechanism identification and finite element analysis on the target side fork AGV, and establish a side fork AGV finite element model; solution analysis module 12: determine the load simulation combination, apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis, and obtain the AGV vehicle stress distribution parameter set; calculation module 13: perform deflection calculation on the AGV vehicle stress distribution parameter set respectively, and obtain the multi-load AGV vehicle deflection calculation result; comparison and evaluation module 14: compare and evaluate the multi-load AGV vehicle deflection calculation results based on the deflection limit value, and obtain the deflection safety assessment coefficient; stability assessment module 15: identify and evaluate the stability of the compressed components in the side fork AGV finite element model, and obtain the vehicle instability assessment coefficient; optimization module 16: perform structural adjustment and optimization on the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient.

[0063] Furthermore, the model building module 11 is used to execute the following method:

[0064] Identify the key mechanisms of the target side fork AGV to obtain a key mechanism set; obtain the design parameters of the target side fork AGV, set parameters for the key mechanism set and model the whole vehicle based on the design parameters, and generate a three-dimensional solid model of the AGV; determine the mesh type and mesh density according to the deflection analysis requirements and model complexity; mesh and perform finite element analysis on the AGV three-dimensional solid model based on the mesh type and mesh density, and establish the finite element model of the side fork AGV.

[0065] Furthermore, the solution analysis module 12 is used to perform the following method:

[0066] Obtain load type information, wherein the load type information includes permanent load, live load and wind load; analyze the working condition of the target side fork AGV based on the load type information to obtain a side fork AGV working condition load parameter set; simulate and combine the side fork AGV working condition load parameter set to determine the load simulation combination.

[0067] Furthermore, the calculation module 13 is used to execute the following method:

[0068] Based on the key mechanism set, the stress distribution parameter set of the AGV whole vehicle is labeled and integrated to obtain the stress distribution parameter set of multi-load key mechanisms; according to the structural characteristics and load distribution characteristics of the key mechanism set, a deflection mechanics calculation formula set is selected; the deflection mechanics calculation formula set is applied to perform deflection calculation on the stress distribution parameter set of the multi-load key mechanisms respectively to obtain the deflection calculation result of the multi-load AGV whole vehicle.

[0069] Furthermore, the comparison and evaluation module 14 is used to perform the following method:

[0070] According to the calculation results of the multi-load AGV vehicle deflection, a vehicle deflection distribution diagram is generated; based on the calculation results of the multi-load AGV vehicle deflection, the deflection value is marked to obtain the multi-load maximum deflection value; the multi-load maximum deflection value and the deflection limit value are compared and evaluated in turn to obtain the deflection safety assessment coefficient.

[0071] Furthermore, the stability evaluation module 15 is used to perform the following method:

[0072] The compressive components in the side-fork AGV finite element model are identified to obtain the AGV compressive component set; stability analysis is performed on the AGV compressive component set to obtain the critical instability load set of the compressive components; the instability situation is evaluated based on the critical instability load set of the compressive components to obtain the instability evaluation coefficient of the whole vehicle.

[0073] Furthermore, the optimization module 16 is used to perform the following method:

[0074] Based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient, a structural optimization analysis is performed on the target side fork AGV to determine a target AGV structural optimization strategy; and the target side fork AGV is structurally adjusted and optimized using the target AGV structural optimization strategy.

[0075] Furthermore, the optimization module 16 is used to perform the following method:

[0076] Based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient, a structural optimization analysis is performed on the target side fork AGV to obtain multiple AGV structural optimization strategies; the multiple AGV structural optimization strategies are used to perform structural optimization simulations on the target side fork AGV respectively to obtain multiple AGV structural optimization effects; the multiple AGV structural optimization strategies are optimized according to the multiple AGV structural optimization effects to determine the target AGV structural optimization strategy.

[0077] Embodiment 3, based on the same inventive concept as the side fork AGV vehicle deflection evaluation method in the above embodiment, this embodiment provides a computer-readable storage medium, which can be used to store software programs, computer executable programs and modules, such as the program instructions / modules corresponding to the side fork AGV vehicle deflection evaluation method in the embodiment of the present application. The processor executes various functional applications and data processing of the computer device by running the software programs, instructions and modules stored in the memory, that is, realizing the above-mentioned side fork AGV vehicle deflection evaluation method.

[0078] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description and does not represent the advantages and disadvantages of the embodiments. And the above-mentioned specific embodiments of this specification are described. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0079] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0080] This specification and drawings are merely exemplary illustrations of the present application and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application and its equivalents, the present application intends to include these modifications and variations.

Claims

1. Side fork AGV vehicle deflection assessment method, characterized in that: The method comprises: Carry out key mechanism identification and finite element analysis on the target side-fork AGV, and establish a finite element model of the side-fork AGV; Determine a load simulation combination, apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis, and obtain a stress distribution parameter set of the AGV whole vehicle; The deflection calculation is performed on the stress distribution parameter set of the AGV vehicle respectively to obtain the deflection calculation result of the multi-load AGV vehicle; Comparing and evaluating the calculation results of the multi-load AGV vehicle deflection based on the deflection limit value, and obtaining a deflection safety assessment coefficient; Identify and evaluate the stability of the compressed components in the side fork AGV finite element model to obtain the vehicle instability evaluation coefficient; The target side fork AGV is structurally adjusted and optimized based on the deflection safety assessment coefficient and the whole vehicle instability assessment coefficient.

2. The side fork AGV vehicle deflection evaluation method according to claim 1, characterized in that: The method of establishing a finite element model of a side fork AGV comprises: Identify the key mechanisms of the target side fork AGV to obtain a key mechanism set; Acquire the design parameters of the target side fork AGV, set parameters of the key mechanism set and model the whole vehicle based on the design parameters, and generate a three-dimensional solid model of the AGV; Determine the mesh type and mesh density based on the deflection analysis requirements and model complexity; Based on the mesh type and mesh density, mesh division and finite element analysis are performed on the AGV three-dimensional solid model to establish the side fork AGV finite element model.

3. The side fork AGV vehicle deflection evaluation method according to claim 1, characterized in that: The determining of the load simulation combination comprises: Obtaining load type information, wherein the load type information includes permanent load, live load and wind load; Analyze the working condition of the target side fork AGV based on the load type information to obtain a side fork AGV working condition load parameter set; The side fork AGV working condition load parameter set is simulated and combined to determine the load simulation combination.

4. The side fork AGV vehicle deflection evaluation method according to claim 2, characterized in that: The calculation result of the deflection of the multi-load AGV vehicle is obtained, including: Based on the key mechanism set, the stress distribution parameter set of the AGV whole vehicle is labeled and integrated to obtain a stress distribution parameter set of a multi-load key mechanism; Selecting a set of deflection mechanics calculation formulas according to the structural characteristics and load distribution characteristics of the key mechanism set; The deflection mechanics calculation formula set is applied to perform deflection calculation on the stress distribution parameter set of the multi-load key mechanism respectively, and the deflection calculation result of the multi-load AGV whole vehicle is obtained.

5. The side fork AGV vehicle deflection evaluation method according to claim 1, characterized in that: The deflection safety assessment coefficient is obtained, including: Generate a vehicle deflection distribution diagram according to the multi-load AGV vehicle deflection calculation result; Based on the deflection calculation result of the multi-load AGV vehicle, the deflection value is marked to obtain the maximum deflection value of the multi-load; The multi-load maximum deflection value and the deflection limit value are compared and evaluated in sequence to obtain the deflection safety assessment coefficient.

6. The side fork AGV vehicle deflection evaluation method according to claim 1, characterized in that: The obtaining of the vehicle instability assessment coefficient comprises: Identify the compression components in the side fork AGV finite element model to obtain an AGV compression component set; Performing stability analysis on the AGV compression component set respectively to obtain a critical instability load set of the compression component; An instability assessment is performed based on the critical instability load set of the compression member to obtain the vehicle instability assessment coefficient.

7. The side fork AGV vehicle deflection evaluation method according to claim 1, characterized in that: The structural adjustment and optimization of the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient includes: Performing structural optimization analysis on the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient to determine a target AGV structural optimization strategy; The target AGV structure optimization strategy is adopted to perform structural adjustment and optimization on the target side fork AGV.

8. The side fork AGV vehicle deflection evaluation method according to claim 7, characterized in that: The target AGV structure optimization strategy is determined, including: Performing structural optimization analysis on the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient to obtain multiple AGV structural optimization strategies; Using the multiple AGV structural optimization strategies to perform structural optimization simulation on the target side fork AGV respectively, to obtain multiple AGV structural optimization effects; The multiple AGV structure optimization strategies are optimized according to the multiple AGV structure optimization effects to determine the target AGV structure optimization strategy.

9. Side fork AGV vehicle deflection assessment system, characterized in that: The system is used to implement the side fork AGV vehicle deflection evaluation method according to any one of claims 1 to 8, comprising: Model building module: perform key mechanism identification and finite element analysis on the target side-fork AGV, and establish a finite element model of the side-fork AGV; Solution analysis module: determine a load simulation combination, apply the load simulation combination to the side fork AGV finite element model in sequence for solution analysis, and obtain a stress distribution parameter set of the AGV whole vehicle; Calculation module: performing deflection calculation on the stress distribution parameter set of the AGV vehicle respectively to obtain the deflection calculation result of the multi-load AGV vehicle; Comparison and evaluation module: compares and evaluates the calculation results of the deflection of the multi-load AGV vehicle based on the deflection limit value to obtain a deflection safety evaluation coefficient; Stability evaluation module: identifying and evaluating the stability of the compressed components in the finite element model of the side fork AGV to obtain the instability evaluation coefficient of the whole vehicle; Optimization module: structurally adjusting and optimizing the target side fork AGV based on the deflection safety assessment coefficient and the vehicle instability assessment coefficient.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the side fork AGV vehicle deflection evaluation method as described in any one of claims 1 to 8 is implemented.

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