A performance verification method for a vehicle-mounted winch and its installation environment components

Abstract

The present application relates to a performance verification method for a vehicle-mounted winch and its installation environment components, belonging to the field of vehicle-mounted winch technology. The method includes: obtaining the winch model and determining the ultimate load of the pull rope on the winch; establishing a winch assembly model, taking the ultimate load as input and performing force analysis, and establishing a rope guide force analysis model; based on the rope guide force analysis model, constructing an objective function of the rope pulling angle and the rope guide force value, and iteratively solving the rope pulling angle when the rope guide force value is maximum; establishing a winch towing working condition simulation model, taking the ultimate load and the rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining simulation analysis results; and performing a durability performance evaluation on the winch and its installation environment components based on the simulation analysis results. The present application can realize the structural durability performance verification of the winch and its connected components under various actual usage scenarios in a whole vehicle environment, and facilitate the identification and optimization of the durability performance of the winch and its components.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted winches, and in particular to a performance verification method for a vehicle-mounted winch and its installation environment components. Background Art

[0002] According to the regulations of automobile motor-driven winch, it is necessary to conduct a series of tests and verifications on the electric winch. Through multiple destructive tests, the bearing strength of the winch rope and whether its force transmission part fails are determined.

[0003] Since the method requires destructive testing and multiple verifications, and the operating conditions are extreme conditions with a single load, and in order to ensure the reliability of military vehicles, the load is often more stringent, resulting in a large design redundancy in component design, increasing product design weight, and resulting in a reduction in cruising range or fuel consumption; when conducting test performance verification, multiple parts will be destroyed, increasing costs, extending the product and vehicle development cycle, and also adding additional design costs.

[0004] Therefore, in response to changes in user scenarios, usage conditions, working conditions, etc. of relevant components, a series of verification processes need to be formed, including simulation working condition identification, simulation boundary setting, simulation analysis working condition setting, simulation result judgment and evaluation methods. Summary of the Invention

[0005] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment parts, which can perform virtual simulation of the vehicle environment, boundary conditions and stress conditions in which the winch and its directly connected components are located, and realize the structural durability performance verification of the winch and its connected components in various actual usage scenarios of users in the vehicle environment to the greatest extent, thereby facilitating the identification and optimization of the reliable durability performance of the winch and its components in the vehicle environment.

[0006] The present invention provides a method for verifying the performance of a vehicle-mounted winch and its installation environment, including the following steps:

[0007] Step S10: Obtain the winch model and determine the limit load of the pull rope on the winch;

[0008] Step S20: Establish a winch assembly model, use the limit load as input and perform force analysis to establish a rope guide force analysis model;

[0009] Step S30: Based on the rope guide force analysis model, construct an objective function of the rope pulling angle and the rope guide force value, and iteratively solve the rope pulling angle when the rope guide force value is the maximum;

[0010] Step S40: Establish a winch towing working condition simulation model, take the limit load and the rope pulling angle as input, perform a winch towing working condition simulation analysis, and obtain a simulation analysis result;

[0011] Step S50: Based on the simulation analysis results, the durability performance of the winch and its installation environment components is evaluated.

[0012] In some embodiments, the step S10 of obtaining the winch model and determining the limit load of the pull rope on the winch includes the following steps:

[0013] Step S11: Select a winch model according to the vehicle model, determine the calibrated tension of the pull rope, select a safety factor, and multiply the calibrated tension by the safety factor to obtain a first tension;

[0014] Step S12: determining the weight of the vehicle under full load, and multiplying the weight of the vehicle under full load by a safety factor to obtain a second pulling force;

[0015] Step S13: Compare the first pulling force and the second pulling force, and use the larger value of the two as the limit load of the pull rope on the winch.

[0016] In some embodiments, the step S20 of establishing a winch assembly model, taking the limit load as input and performing a force analysis, and establishing a rope guide force analysis model includes the following steps:

[0017] Step S21: Obtain design parameters of the winch, pull rope, rope guide, and connecting bracket;

[0018] Step S22: constructing a three-dimensional model of the winch, rope guide, and connecting bracket in a three-dimensional software according to the above design parameters, and assembling them to obtain an assembled three-dimensional model;

[0019] Step S23: import the three-dimensional model into the force analysis software, apply the ultimate load to the pull rope, use the force software to perform force analysis on the rope guide, and establish a force analysis model of the rope guide.

[0020] In some embodiments, step S30, constructing an objective function of the rope pulling angle and the rope guide force value based on the rope guide force analysis model, and iteratively solving the rope pulling angle when the rope guide force value is maximum, includes the following steps:

[0021] Step S31: Based on the rope guide force analysis model, a coordinate system of the rope guide is established to determine the range of variation of the two lead-out angles formed after the pull rope passes through the rope guide;

[0022] Step S32: construct an objective function using the two lead-out angles formed after the pull rope passes through the rope guide as design variables and the maximum stress value on the rope guide as the target;

[0023] Step S33: Iteratively solve the objective function to obtain two lead-out angles formed after the pull rope passes through the rope guide.

[0024] In some embodiments, the two lead-out angles formed by the pull rope after being turned by the rope guide are two angles formed by the pull rope and the plane where the rope guide is located.

[0025] In some embodiments, step S40, establishing a winch towing working condition simulation model, taking the limit load and the rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result, includes the following steps:

[0026] Step S41: constructing a simulation model of the winch towing working condition through simulation software;

[0027] Step S42: Input the ultimate load and the rope pulling angle as simulation analysis parameters into the simulation software, and gradually load the ultimate load from zero to the maximum and then gradually unload it to zero;

[0028] Step S43: Obtain analysis results output by the simulation software.

[0029] In some embodiments, the step S41 of constructing a simulation model of the winch towing working condition using simulation software includes the following steps:

[0030] Step S411: import the vehicle frame and winch assembly model into the simulation software for assembly, cut the vehicle frame, and implement full constraints at the cut;

[0031] Step S412: performing a virtual simulation on the assembly relationship of the components on the winch assembly model, and the assembly relationship between the winch assembly model and the vehicle frame;

[0032] Step S413: Complete the nonlinear setting of each component material by importing the nonlinear material library and the matching relationship between each component material and the nonlinear material.

[0033] In some embodiments, step S50, performing durability performance evaluation on the winch and its installation environment components based on the simulation analysis results, includes the following steps:

[0034] Step S51: Obtaining durability performance evaluation indicators of the winch, rope guide, and connecting bracket;

[0035] Step S52: Compare the simulation analysis results with the durability performance evaluation index. If the durability performance evaluation index is met, it means that the durability performance of the winch, rope guide and connecting bracket meets the requirements.

[0036] In some embodiments, the durability performance evaluation index includes a maximum equivalent plastic strain of a component being less than a preset percentage, and a maximum residual deformation of a component being less than a preset length value.

[0037] In some embodiments, the simulation analysis results are compared with the durability performance evaluation index in step S52. If the durability performance evaluation index is not met, optimization countermeasures are analyzed for the performance area that does not meet the requirements.

[0038] The beneficial effects of the technical solution provided by this application include:

[0039] An embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components, as the method includes: obtaining the winch model and determining the ultimate load of the pull rope on the winch; establishing a winch assembly model, taking the ultimate load as input and performing force analysis, and establishing a rope guide force analysis model; based on the rope guide force analysis model, constructing an objective function of the rope pulling angle and the rope guide force value, and iteratively solving the rope pulling angle when the rope guide force value is maximum; establishing a winch towing working condition simulation model, taking the ultimate load and the rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining simulation analysis results; and performing a durability performance evaluation on the winch and its installation environment components based on the simulation analysis results.

[0040] Therefore, the present application can integrate user working conditions and test working conditions, and through optimization iteration, iterate out the most optimized rope pulling simulation working condition, and use the optimal rope pulling simulation working condition as the virtual test simulation working condition to ensure that the simulation test results are consistent with the actual vehicle and the test process, and to ensure the reliability of the simulation test; at the same time, the whole vehicle environment, boundary conditions and stress conditions of the winch and its directly connected components are virtually simulated to achieve the structural durability performance verification of the winch and its connected components in various actual user usage scenarios in the whole vehicle environment to the greatest extent, so as to facilitate the identification and optimization of the reliable durability performance of the winch and its components in the whole vehicle environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] Figure 1 This is a flowchart of an embodiment of the present application;

[0043] Figure 2 A flowchart for determining the ultimate load according to an embodiment of the present application;

[0044] Figure 3 This is a flow chart of the rope lead-out angle according to an embodiment of the present application;

[0045] Figure 4This is a schematic structural diagram of a winch assembly model according to an embodiment of the present application;

[0046] Figure 5 This is a schematic diagram of the force analysis of the rope guide according to an embodiment of the present application.

[0047] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0048] 100. Winch; 110. Pull rope; 120. Rope guide; 200. Connecting bracket. DETAILED DESCRIPTION

[0049] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] In response to the deficiencies or one of the deficiencies raised in the above-mentioned background technology, an embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment parts, which can perform virtual simulation of the vehicle environment, boundary conditions and stress conditions in which the winch and its directly connected components are located, and realize the structural durability performance verification of the winch and its connected components in various actual usage scenarios of users in the vehicle environment to the greatest extent, thereby facilitating the identification and optimization of the reliable durability performance of the winch and its components in the vehicle environment.

[0051] See also Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components, including:

[0052] Step S10: Obtain the model of the winch 100 and determine the limit load of the pull rope 110 on the winch 100;

[0053] Step S20: Establish an assembly model of the winch 100, use the limit load as input and perform a force analysis to establish a force analysis model of the rope guide 120;

[0054] Step S30: Based on the force analysis model of the rope guide 120, construct an objective function of the pulling angle of the rope 110 and the force value of the rope guide 120, and iteratively solve the pulling angle of the rope 110 when the force value of the rope guide 120 is the maximum;

[0055] Step S40: Establish a simulation model of the towing working condition of the winch 100, take the ultimate load and the pulling angle of the pull rope 110 as input, perform a simulation analysis of the towing working condition of the winch 100, and obtain a simulation analysis result;

[0056] Step S50: Based on the simulation analysis results, a durability evaluation is performed on the winch 100 and its installation environment components.

[0057] The performance verification method for the vehicle-mounted winch and its installation environment components of the embodiment of the present application can iteratively solve the pulling angle of the rope 110 according to the ultimate load of the rope 110 on the winch 100 after determining the ultimate load of the rope 110 on the winch 100. The pulling angle of the rope 110 and the ultimate load on the rope 110 together constitute the optimized simulation working condition.

[0058] In addition, user working conditions can be obtained in advance for integration, and optimization iterations can be involved to ensure test reliability. This application improves the leanness and lightweight performance of product design, while ensuring product reliability, shortening product development cycles, saving development costs, and improving user satisfaction.

[0059] That is, the present application can sort out the user working conditions according to the actual usage scenarios of the winch 100 by the user, integrate the user working conditions and the test working conditions, and iterate the working condition optimization and iteration, and iterate the optimized simulation working conditions through phenomena consistent with the test results and the test process, and use the optimal simulation working conditions as the virtual test simulation working conditions.

[0060] At the same time, virtual simulation is performed on the vehicle environment, boundary conditions and stress conditions of the winch 100 and its directly connected components, so as to realize the structural durability performance verification of the winch 100 and its connected components in various actual usage scenarios of users in the vehicle environment to the greatest extent, and thereby identify and optimize the reliable durability performance of the winch 100 and its components in the vehicle environment.

[0061] In some alternative embodiments: See Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S10 of the performance verification method for a vehicle-mounted winch and its installation environment components is to obtain the winch 100 model and determine the limit load of the pull rope 110 on the winch 100, including the following steps:

[0062] Step S11: Select the winch 100 model according to the vehicle model, determine the calibrated tension of the pull rope 110, select a safety factor, and multiply the calibrated tension by the safety factor to obtain a first tension;

[0063] Step S12: determining the weight of the vehicle under full load, and multiplying the weight of the vehicle under full load by a safety factor to obtain a second pulling force;

[0064] Step S13 : comparing the first pulling force and the second pulling force, and taking the larger value of the two as the limit load of the pull rope 110 on the winch 100 .

[0065] The purpose of step S10 of the performance verification method for the vehicle-mounted winch and its installation environment components in the embodiment of the present application is to obtain a load value for verifying the strength of the winch 100 and its installation environment components, that is, a limit load.

[0066] For example, in step S11, the winch 100 model can be preliminarily selected according to the vehicle design parameters of the vehicle model. After the winch 100 model is selected, the tension level of the winch 100 can be determined, and then the calibrated tension of the pull rope 110 can be determined. This value can be selected as the verification load for the strength performance of the winch 100 and its bearing components, and is set as the second tension F1. At the same time, the safety factor is taken into account, and the safety factor is 1.25, as shown in the following formula:

[0067] F1=1.25×

[0068] For example, the table of tensile series levels and main technical indicators is as follows:

[0069]

[0070] In step S12, considering that in actual use, such as when a vehicle is stuck in a deep pit and needs to be rescued or towed by another vehicle, it is necessary to overcome the friction of the entire vehicle, and at the same time consider an appropriate safety margin as the test tension for the strength performance of the winch 100 and its load-bearing components, the value is set to the second tension F2. This value is mainly considered to overcome the friction of the vehicle when it is fully loaded, while also considering the safety factor. The specific formula is as follows:

[0071] F2=1.25×

[0072] in, is the mass of the actual vehicle under full load, is the acceleration due to gravity.

[0073] In step S13 , the first tension F1 in step S11 and the second tension F2 in step S12 are compared, and the larger value is used as the limit load for subsequent strength verification of the winch 100 and its installation environment components.

[0074] In some alternative embodiments: See Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S20 of the performance verification method for a vehicle-mounted winch and its installation environment components is to establish an assembly model of the winch 100, take the limit load as input and perform force analysis, and establish a force analysis model of the rope guide 120, including the following steps:

[0075] Step S21, obtaining design parameters of the winch 100, the pull rope 110, the rope guide 120 and the connecting bracket 200;

[0076] Step S22: construct a three-dimensional model of the winch 100, the rope guide 120, and the connecting bracket 200 in a three-dimensional software according to the above design parameters, and assemble them to obtain an assembled three-dimensional model;

[0077] Step S23 , importing the three-dimensional model into the force analysis software, applying a limit load to the pull rope 110 , performing a force analysis on the rope guide 120 using the force analysis software, and establishing a force analysis model of the rope guide 120 .

[0078] The purpose of step S20 of the performance verification method for the vehicle-mounted winch and its installation environment parts in the embodiment of the present application is to perform a force analysis on the rope guide 120 and establish a force analysis model of the rope guide 120 to facilitate the subsequent step S30 to construct an objective function to determine the ultimate loading operating conditions of the pull rope 110 on the winch 100.

[0079] In some alternative embodiments: See Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S30 of the performance verification method for a vehicle-mounted winch and its installation environment components is to construct an objective function of the pulling angle of the rope 110 and the force value of the rope guide 120 based on the force analysis model of the rope guide 120, and iteratively solve the pulling angle of the rope 110 when the force value of the rope guide 120 is the maximum, including the following steps:

[0080] Step S31: Based on the force analysis model of the rope guide 120, a coordinate system of the rope guide 120 is established to determine the range of variation of the two lead-out angles formed by the pull rope 110 after turning through the rope guide 120;

[0081] Step S32: construct an objective function using the two lead-out angles formed by the rope 110 after being turned through the rope guide 120 as design variables and the maximum stress value on the rope guide 120 as the target;

[0082] Step S33: Iteratively solve the objective function to obtain two lead-out angles formed by the pull rope 110 after turning through the rope guide 120.

[0083] The purpose of step S30 of the performance verification method for the vehicle-mounted winch and its installation environment parts in the embodiment of the present application is to obtain the load direction for verifying the strength of the winch 100 and its installation environment parts, that is, the two lead-out angles formed after the pull rope 110 is turned through the rope guide 120, so as to facilitate the sorting of user working conditions according to the user's actual usage scenario of the winch 100.

[0084] For example, for the actual use scenario of the winch 100, it can be determined that the use of the winch 100 mainly involves the pulling direction of the pull rope 110. It is particularly important to determine the extreme loading use condition of the pull rope 110 based on the pulling direction of the pull rope 110.

[0085] To determine the ultimate pulling direction of the rope 110, it is necessary to understand the actual pulling conditions of the rope 110 by the actual user when the winch 100 is operating. However, through analysis of the actual operating conditions of the winch 100 and its rope 110, it is found that the rope 110 is first drawn out of the winch 100 and extended to the rope guide 120. There is a contact point on the rope guide 120. After turning at this contact point, the rope 110 extends in two directions. These two extension directions affect the stress value on the rope guide 120.

[0086] In order to determine the extreme pulling direction of the pull rope 110, it is necessary to determine the two extension directions formed by the pulling of the pull rope 110, that is, the two lead-out angles formed after the pull rope 110 turns through the rope guide 120. Therefore, in this application, the force analysis model can be used to determine the functional relationship between the two lead-out angles formed after the pull rope 110 turns through the rope guide 120 and the stress value applied to the rope guide 120.

[0087] When the tension of the rope 110 is known, that is, the ultimate load is known, the two lead-out angles can be iterated by software to solve the two lead-out angles at which the rope guide 120 is subjected to the maximum stress value, that is, the two lead-out angles formed after the rope guide 120 turns when the rope 110 is pulled.

[0088] For example, a simulation DOE experiment can be performed to convert the problem into a multivariable optimization problem to obtain the actual solution of the unknown quantity.

[0089] First, determine the thickness range of the material of the rope guide 120, which is set according to the actual process feasibility; the design variable is the angle between the winch 100 and the rope 110, and the unknown quantity and ; Taking the maximum stress value of the rope guide 120 as the objective function, the optimization model is iteratively solved through the optimization software to obtain the unknown quantity and Specific solution.

[0090] Furthermore, the force analysis of the winch 100 and its assembly model can be performed, and the limit loads and corresponding traction angles obtained in the above steps can be sorted and combined in combination with actual user scenarios. The table is as follows:

[0091]

[0092] In some alternative embodiments: See Figures 1 to 5As shown, an embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment parts. In the performance verification method for the vehicle-mounted winch and its installation environment parts, the two lead-out angles formed by the pull rope 110 after turning through the rope guide 120 are the two angles formed by the plane where the pull rope 110 and the rope guide 120 are located.

[0093] The performance verification method of the vehicle-mounted winch and its installation environment of the embodiment of the present application is as follows: the two lead-out angles formed by the pull rope 110 after being turned by the rope guide 120 are the two angles formed by the pull rope 110 and the plane where the rope guide 120 is located. and When the tension of the rope 110 abutting on the rope guide 120 is known, the trigonometric function can be used to solve the force F on the rope guide 120 under the tension of the rope 110, so that the 、 The functional relationship between and F.

[0094] For example, based on design experience or dragging conditions, determine 、 The respective size ranges can then be used to iteratively solve the maximum F. 、 The multiple sets of solutions correspond to various dragging conditions, which is convenient for simulation analysis based on actual user scenarios.

[0095] In some alternative embodiments: See Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S40 of the performance verification method for the vehicle-mounted winch and its installation environment components is to establish a simulation model of the towing working condition of the winch 100, take the ultimate load and the pulling angle of the pull rope 110 as input, perform a simulation analysis of the towing working condition of the winch 100, and obtain the simulation analysis results, including the following steps:

[0096] Step S41: constructing a simulation model of the towing working condition of the winch 100 by using simulation software;

[0097] Step S42: Input the ultimate load and the pulling angle of the pull rope 110 as simulation analysis parameters into the simulation software, and gradually load the ultimate load from zero to the maximum and then gradually unload it to zero;

[0098] Step S43: Obtain analysis results output by the simulation software.

[0099] The purpose of step S40 of the performance verification method for the vehicle-mounted winch and its installation environment components in the embodiment of the present application is to perform strength verification on the simulation model for the towing condition of the winch 100 and obtain output analysis results.

[0100] It should be noted that the actual reliability requirements of physical inspections—no cracks, no deformation, no sticking, no loosening, and no rim damage—are translated into simulation requirements. This means that the analysis output must meet the target plastic strain and residual deformation requirements. Therefore, the analysis output must include requirements such as the maximum equivalent strain and residual deformation.

[0101] In some alternative embodiments: See Figures 1 to 5 As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S41 of the performance verification method for a vehicle-mounted winch and its installation environment components is to construct a simulation model of the towing working condition of the winch 100 by simulation software, including the following steps:

[0102] Step S411: import the assembly model of the vehicle frame and the winch 100 into the simulation software for assembly, cut the vehicle frame, and implement full constraints at the cut portion;

[0103] Step S412: performing a virtual simulation on the assembly relationship of the components on the assembly model of the winch 100 and the assembly relationship between the assembly model of the winch 100 and the vehicle frame;

[0104] Step S413: Complete the nonlinear setting of each component material by importing the nonlinear material library and the matching relationship between each component material and the nonlinear material.

[0105] The purpose of step S41 of the performance verification method for the vehicle-mounted winch and its installation environment parts in the embodiment of the present application is to perform a virtual simulation of the vehicle environment, boundary conditions and stress conditions of the winch 100 and its directly connected components.

[0106] For example, during a virtual simulation, the winch 100 is assembled onto its connecting component, typically the vehicle frame, including the rope guide 120 and its front bumper attachment. To improve simulation efficiency, the frame is cut, and full constraints are applied at the cut. The cut region is adjusted based on simulation experience. It is recommended to use the actual cut region determined after benchmarking with the test, which minimizes the impact of the frame cut length on the simulation results.

[0107] Virtual simulations were performed for each connected environmental component and its assembly relationship, ensuring consistency between the simulation and the actual object. Before strength verification of the model, geometric nonlinearity settings were required due to the presence of large deformations in the actual model. Furthermore, since the final requirement was that the actual object would not break or fall off, material nonlinearity settings were added during the simulation analysis.

[0108] In some alternative embodiments: See Figures 1 to 5As shown, the embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment components. Step S50 of the performance verification method for a vehicle-mounted winch and its installation environment components is to evaluate the durability performance of the winch 100 and its installation environment components based on the simulation analysis results, including the following steps:

[0109] Step S51, obtaining durability performance evaluation indicators of the winch 100, the rope guide 120 and the connecting bracket 200;

[0110] Step S52: Compare the simulation analysis results with the durability performance evaluation index. If the durability performance evaluation index is met, it means that the durability performance of the winch 100, the rope guide 120 and the connecting bracket 200 meets the requirements.

[0111] The purpose of step S50 of the performance verification method for a vehicle-mounted winch and its installation environment in this embodiment of the present application is to establish a method for evaluating the reliability and durability of the winch 100 and its force transmission and connection components. Evaluation indicators are set based on actual reliability requirements and engineering experience accumulated through virtual verification to determine whether a component is broken.

[0112] For example, the winch 100, rope guide 120 and connecting bracket 200 need to be judged based on their maximum equivalent plastic strain to see whether they are broken and thus affect their use, such as using the maximum equivalent plastic strain less than 2% for judgment; the gaps between the components are normal, and there is no obvious visible deformation, and the maximum residual deformation of less than 0.5 mm can be used as the basis for judgment.

[0113] In some alternative embodiments: See Figures 1 to 5 As shown, an embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment parts. The durability performance evaluation indicators of the performance verification method for the vehicle-mounted winch and its installation environment parts include the maximum equivalent plastic strain of the component being less than a preset percentage, and the maximum residual deformation of the component being less than a preset length value.

[0114] In the performance verification method for a vehicle-mounted winch and its installation environment, the maximum equivalent plastic strain of a component is less than a preset percentage, which can be used to determine whether the component is broken and thus affects its use. The maximum residual deformation of a component is less than a preset length value, which can be used to determine whether the gaps between the components are normal and there is no obvious visible deformation. For example, the preset percentage is 2% and the preset length value is 0.5mm.

[0115] In some alternative embodiments: See Figures 1 to 5 As shown, an embodiment of the present application provides a performance verification method for a vehicle-mounted winch and its installation environment parts. In step S52 of the performance verification method for a vehicle-mounted winch and its installation environment parts, the simulation analysis results are compared with the durability performance evaluation index. If the durability performance evaluation index is not met, optimization countermeasures analysis is performed for the performance area that does not meet the requirements.

[0116] When the performance evaluation of a vehicle-mounted winch and its installation environment components in the embodiments of the present application fails to meet the performance requirements, optimization strategies are analyzed for the areas where performance requirements are not met. For example, optimization strategies can be considered in combination with the appropriate process molding characteristics and cost of the relevant components. Furthermore, for areas where performance requirements are met, potential optimization areas are identified, and redundant design is performed in accordance with process and design requirements.

[0117] For example, the simulation model of the present application can be modularized as follows:

[0118] 1) Since the file generated by the simulation process of the vehicle-mounted winch and its force transmission components and connecting components introduced in this embodiment is an electronic file, the grid, boundary condition setting, analysis working conditions and calculation and solution processes are all in binary encoding format. The simulation model can be modularized, and the formed modular file can be partitioned into character blocks, and static character blocks and dynamic character blocks can be defined.

[0119] 2) Mark the entire simulation model into character blocks.

[0120] According to their characteristics, all character areas mainly include the following 10 main character areas: node mark character area, mesh mark character area, material property mark character area, section property mark character area, connection relationship character area, working condition definition character area, load definition character area, constraint boundary definition character area, result output definition character area and end command character area.

[0121] 3) Distinguish between static character area and dynamic character area.

[0122] Among them, the key command lines of all character areas are set as static character areas, and there is no need to assign values ​​or adjust them; the working condition verification type and quantity, result output definition character area and end command character area are all static character areas.

[0123] There are differences in the geometric models of different vehicle models, the materials of the winch and its connecting parts, the winch assembly and the direction of rope winding and the layout structure of the rope guide, and the constraints and connection relationships caused by different environmental boundaries. All of these should be set as dynamic character areas.

[0124] 4) The dynamic character area can be loaded with the help of the include command of the simulation software, or by assigning values ​​to the parameters of the dynamic character area.

[0125] 5) According to the file arrangement rules, the static character area and the dynamic character area need to be sorted reasonably to form a simulation calculation template file that can be called. The file format is fixed. The dynamic character area is assigned values ​​through dynamic assignment or include command to complete the creation of the calculation file.

[0126] 6) Use the command to create a bat file and use the bat file to call the calculation file completed in the above steps.

[0127] The steps 1) to 6) are named in a standardized manner according to the parts, and a packaged document is formed. This document can also be used for reference in other similar virtual verification work.

[0128] That is, the performance verification method of the winch provided in the example of this application can sort out the user working conditions according to the user's actual usage scenarios of the winch, integrate the user working conditions and the test working conditions, and iterate the working condition optimization and iteration through phenomena consistent with the test results and the test process to iterate the optimal simulation working conditions, and use the optimal simulation working conditions as the virtual test simulation working conditions.

[0129] At the same time, virtual simulation is carried out on the vehicle environment, boundary conditions and stress conditions of the winch and its directly connected components, so as to realize the structural durability performance verification of the winch and its connected components in various actual user usage scenarios in the vehicle environment to the greatest extent possible, and thereby identify and optimize the reliable durability performance of the winch and its components in the vehicle environment.

[0130] Finally, through modular partitioning, dynamic partitions are assigned values ​​or automatically retrieved from coding files, static partitions are fixedly set, and the entire file is connected to form a standardized simulation process, reducing engineers' repetitive operations and fixing static areas to reduce the human error rate.

[0131] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0132] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0133] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A performance verification method for a vehicle-mounted winch and its installation environment, characterized in that: The following steps are involved: Obtain the winch model and determine the maximum load of the pull rope on the winch; Establish a winch assembly model, use the limit load as input and perform force analysis, and establish a rope guide force analysis model; Based on the force analysis model of the rope guide, the objective function of the rope pulling angle and the rope guide force value is constructed, and the rope pulling angle when the rope guide force value is the maximum is solved iteratively; Establish a winch towing working condition simulation model, use the ultimate load and the rope pulling angle as input, perform a winch towing working condition simulation analysis, and obtain the simulation analysis results; Based on the simulation analysis results, the durability performance of the winch and its installation environment components is evaluated.

2. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 1, characterized in that: The method of obtaining the winch model and determining the limit load of the pull rope on the winch includes the following steps: Select the winch model according to the vehicle model, determine the calibrated tension of the pull rope, select the safety factor, and multiply the calibrated tension by the safety factor to obtain the first tension; Determine the weight of the vehicle when fully loaded, and multiply the weight of the vehicle when fully loaded by the safety factor to obtain the second pulling force; Compare the first and second pulling forces, and take the larger of the two as the ultimate load of the pull rope on the winch.

3. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 1, characterized in that: The method of establishing a winch assembly model, taking the limit load as input and performing a force analysis, and establishing a rope guide force analysis model includes the following steps: Obtain design parameters of winch, pull rope, rope guide and connecting bracket; According to the above design parameters, a three-dimensional model of the winch, rope guide, and connecting bracket is constructed in a three-dimensional software and assembled to obtain an assembled three-dimensional model; Import the three-dimensional model into the force analysis software, apply the ultimate load to the pull rope, use the force software to perform force analysis on the rope guide, and establish the force analysis model of the rope guide.

4. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 1, characterized in that: The method comprises the following steps: constructing an objective function of the pulling angle of the rope and the force value of the rope guide based on the force analysis model of the rope guide, and iteratively solving the pulling angle of the rope when the force value of the rope guide is the maximum. Based on the force analysis model of the rope guide, the coordinate system of the rope guide is established to determine the range of the two lead-out angles formed after the rope passes through the rope guide. The objective function is constructed by taking the two lead-out angles formed after the rope is turned through the rope guide as design variables and the maximum stress value on the rope guide as the target. The objective function is solved iteratively to obtain the two lead-out angles formed after the pull rope passes through the rope guide.

5. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 4, characterized in that: The two lead-out angles formed by the pull rope after being turned by the rope guide are two angles formed by the pull rope and the plane where the rope guide is located.

6. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 1, characterized in that: The method of establishing a winch towing working condition simulation model, taking the limit load and the rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result includes the following steps: Construct a simulation model of the winch towing working condition through simulation software; The ultimate load and the rope pulling angle are input into the simulation software as simulation analysis parameters. The ultimate load is gradually loaded from zero to the maximum and then gradually unloaded to zero. Get analysis results output by simulation software.

7. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 6, characterized in that: The construction of a simulation model of the winch towing working condition by simulation software includes the following steps: Import the frame and winch assembly model into the simulation software for assembly, cut the frame, and implement full constraints at the cut; Conduct virtual simulation of the assembly relationship between the components on the winch assembly model, as well as the assembly relationship between the winch assembly model and the vehicle frame; By importing the nonlinear material library and the matching relationship between each component material and the nonlinear material, the nonlinear setting of each component material is completed.

8. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 1, characterized in that: The durability performance evaluation of the winch and its installation environment components is performed based on the simulation analysis results, including the following steps: Obtain durability performance evaluation indicators for winches, rope guides, and connecting brackets; The simulation analysis results are compared with the durability performance evaluation indicators. If the durability performance evaluation indicators are met, it means that the durability performance of the winch, rope guide and connecting bracket meets the requirements.

9. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 8, characterized in that: The durability performance evaluation index includes that the maximum equivalent plastic strain of the component is less than a preset percentage, and the maximum residual deformation of the component is less than a preset length value.

10. The performance verification method for a vehicle-mounted winch and its installation environment according to claim 8, characterized in that: Also includes: The simulation analysis results are compared with the durability performance evaluation indicators. If the durability performance evaluation indicators are not met, optimization countermeasures analysis is performed on the unsatisfactory performance areas.

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