Vehicle-mounted winch and performance checking method for installation environment part of vehicle-mounted winch

Abstract

The invention relates to a vehicle-mounted winch and a performance checking method of an installation environment part thereof, and belongs to the technical field of vehicle-mounted winches. The method comprises the steps that the winch model is obtained, and the limit load of a pull rope on the winch is determined; establishing a winch assembly model, taking the limit load as input and carrying out stress analysis, and establishing a rope guide stress analysis model; based on a rope guide stress analysis model, an objective function of a pull rope pulling angle and a rope guide stress value is constructed, and the pull rope pulling angle when the rope guide stress value is maximum is iteratively solved; a winch dragging working condition simulation model is established, the limit load and the pull rope dragging angle serve as input, winch dragging working condition simulation analysis is conducted, and a simulation analysis result is obtained; and according to a simulation analysis result, carrying out durability evaluation on the winch and the installation environment part thereof. According to the application, the structure durability check of the winch and the connecting parts thereof in the whole vehicle environment under various actual use scene working conditions can be realized, and the durability of the winch and the parts thereof can be identified and optimized conveniently.

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 an installation environment component thereof. Background Art

[0002] According to the regulations of automobile motor driven winch, it is necessary to carry out a series of tests and verifications on the electric winch, and through multiple destructive tests, determine the bearing strength of the winch rope and whether its force transmission part fails.

[0003] Since the method requires the use of destructive tests and multiple verifications, and the operating conditions are extreme conditions, the load is single, 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, increasing the product and vehicle development cycle, and also increasing additional design costs.

[0004] Therefore, in response to changes in user scenarios, usage conditions, working conditions, etc. of relevant components, it is necessary to form a series of verification processes such as simulation condition identification, simulation boundary setting, simulation analysis condition setting, simulation result judgment and evaluation methods. Summary of the invention

[0005] In response to the deficiencies or one of the deficiencies raised by 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 whole 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 usage scenarios of users in the whole 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 whole vehicle environment.

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

[0007] Step S10, obtaining the winch model and determining the limit load of the pull rope on the winch;

[0008] Step S20, establishing a winch assembly model, taking the limit load as input and performing a force analysis, and establishing 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, establishing a winch towing working condition simulation model, taking the limit load and the pull rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result;

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

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

[0013] Step S11, selecting a winch model according to the vehicle model, determining the calibrated tension of the pull rope, selecting a safety factor, and multiplying 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, 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, obtaining design parameters of the winch, the pull rope, the rope guide and the connecting bracket;

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

[0019] Step S23, import the three-dimensional model into the force analysis software, apply the limit 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.

[0020] In some embodiments, the step S30, based on the force analysis model of the rope guide, constructing the 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 the maximum, includes the following steps:

[0021] Step S31, based on the force analysis model of the rope guide, establish the coordinate system of the rope guide, and determine the variation range of the two lead-out angles formed after the pull rope passes through the rope guide;

[0022] Step S32, taking the two lead-out angles formed after the pull rope passes through the rope guide as design variables and the maximum stress value of the rope guide as the target, constructing an objective function;

[0023] Step S33, iteratively solve the objective function to obtain two lead-out angles formed by the pull rope after turning 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, the step S40, establishing a winch towing working condition simulation model, taking the limit load and the pull rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result, comprises the following steps:

[0026] Step S41, constructing a simulation model of the winch towing working condition by using simulation software;

[0027] Step S42, inputting the limit load and the rope pulling angle as simulation analysis parameters into the simulation software, and gradually loading the limit load from zero to the maximum and then gradually unloading to zero;

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

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

[0030] Step S411, importing the frame and winch assembly model into the simulation software for assembly, cutting the frame, and implementing full constraints at the cut;

[0031] Step S412, performing 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: completing 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, the step S50, performing durability performance evaluation on the winch and its installation environment components according to the simulation analysis results, comprises the following steps:

[0034] Step S51, obtaining durability performance evaluation indicators of the winch, the rope guide and the 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, the rope guide and the connecting bracket meets the requirements.

[0036] In some embodiments, 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.

[0037] In some embodiments, the simulation analysis result is compared with the durability performance evaluation index in step S52. If the durability performance evaluation index is not met, an optimization countermeasure analysis is performed 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 parts, because the method includes: obtaining the winch model and determining the limit load of the pull rope on the winch; establishing a winch assembly model, taking the limit 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 pull rope pulling angle and the rope guide force value, and iteratively solving the pull rope pulling angle when the rope guide force value is maximum; establishing a winch towing working condition simulation model, taking the limit load and the pull rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result; and based on the simulation analysis result, performing a durability performance evaluation on the winch and its installation environment parts.

[0040] Therefore, the present application can integrate user working conditions and test conditions, and through optimization iteration, iterate the most optimized rope-pulling simulation condition, and use the optimal rope-pulling simulation condition as the virtual test simulation condition to ensure that the simulation test results are consistent with the actual vehicle and the test process, thereby ensuring 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 drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

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

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

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

[0045] Figure 4This is a structural schematic 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 listed as follows:

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

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not 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.

[0050] In response to the deficiencies or one of the deficiencies raised by 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 whole 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 usage scenarios of users in the whole 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 whole 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, obtaining the model of the winch 100, and determining the limit load of the pull rope 110 on the winch 100;

[0053] Step S20, establishing an assembly model of the winch 100, taking the limit load as input and performing a force analysis, and establishing 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, establishing a simulation model of the towing working condition of the winch 100, taking the limit load and the pulling angle of the pull rope 110 as input, performing a simulation analysis of the towing working condition of the winch 100, and obtaining a simulation analysis result;

[0056] Step S50: According to the simulation analysis results, the durability performance of the winch 100 and its installation environment components is evaluated.

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

[0058] In addition, user working conditions can be obtained in advance for integration, and optimization iteration can be involved to ensure test reliability. This application improves the lean and lightweight performance of product design, while ensuring product reliability, reducing 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 user's actual usage scenarios of the winch 100, integrate the user working conditions and the test working conditions, and iterate the working condition optimization and iteration, and through phenomena consistent with the test results and the test process, iterate the optimal simulation working condition, and use the optimal simulation working condition as the virtual test simulation working condition.

[0060] At the same time, a 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 verify the structural durability of the winch 100 and its connected components in various actual user usage scenarios in the vehicle environment to the greatest extent possible, thereby identifying and optimizing the reliable durability 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 parts. The performance verification method for the vehicle-mounted winch and its installation environment parts includes step S10, obtaining the model of the winch 100, and determining the limit load of the pull rope 110 on the winch 100, including the following steps:

[0062] Step S11, selecting the winch 100 model according to the vehicle model, determining the calibrated tension of the pull rope 110, selecting a safety factor, and multiplying 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: 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 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 parts 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 parts, that is, a limit load.

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

[0067] F1=1.25×F 标定

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

[0069]

[0070] In step S12, it is considered that in actual use, for example, the actual vehicle falls into a deep pit and needs to be rescued or towed by other vehicles, and the friction of the entire vehicle needs to be overcome. At the same time, a suitable safety margin is considered as the test tension of the winch 100 and its bearing components. The value is set to the second tension F2. This value is mainly considered to overcome the friction of the actual vehicle under full load, and the safety factor is considered at the same time. The specific formula is as follows:

[0071] F2=1.25×M 满载 ×g

[0072] Among them, M 满载 is the mass of the actual vehicle when fully loaded, and g 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 one 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 parts. The performance verification method for the vehicle-mounted winch and its installation environment parts, step S20, establishes an assembly model of the winch 100, takes the limit load as input and performs force analysis, and establishes 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 the limit load to the pull rope 110, using the force software to perform force analysis on the rope guide 120, 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 extreme loading and 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 parts. The performance verification method for the vehicle-mounted winch and its installation environment parts, step S30, based on the force analysis model of the rope guide 120, constructs an objective function of the pulling angle of the pull rope 110 and the force value of the rope guide 120, and iteratively solves the pulling angle of the pull 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 variation range of the two lead-out angles formed after the pull rope 110 is turned through the rope guide 120;

[0081] Step S32, taking the two lead-out angles formed by the pull rope 110 after turning through the rope guide 120 as design variables and the maximum stress value of the rope guide 120 as the target, constructing an objective function;

[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 by the pull rope 110 after turning 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 limit pulling direction of the pull rope 110, it is necessary to understand the actual pulling situation of the pull rope 110 by the actual user of the pull rope 110 when the winch 100 is working. However, through the analysis of the actual working conditions of the winch 100 and its pull rope 110, the pull rope 110 is first led out through the winch 100 and extended to the rope guide 120. There will be a contact point on the rope guide 120. After turning at the contact point, the pull rope 110 forms two extension directions. The two extension direction brackets affect the stress value of 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 is turned through the rope guide 120. Therefore, in this application, the function relationship between the two lead-out angles formed after the pull rope 110 is turned through the rope guide 120 and the stress value of the rope guide 120 can be determined through the force analysis model.

[0087] When the tension of the pull rope 110 is known, that is, the limit 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 pull 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] Firstly, the thickness range of the material of the rope guide 120 is determined, and the range is set according to the actual process feasibility; the design variables are the angle between the winch 100 and the pull rope 110, and the unknown quantities α1 and α2; the maximum stress value of the rope guide 120 is taken as the objective function, and the optimization model is iteratively solved through the optimization software to obtain the specific solutions of the unknown quantities α1 and α2.

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

[0091] Working conditions Load size Load direction 1 Load direction 2 Case 1 <![CDATA[Max(F1F2)]]> α <![CDATA[α2]]> Case 2 …… …… …… Case 3 …… …… …… …… …… …… ……

[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 components. In the performance verification method for the vehicle-mounted winch and its installation environment components, 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 plane where the pull rope 110 and the rope guide 120 are located.

[0093] In the performance verification method for the vehicle-mounted winch and its installation environment parts of the embodiment of the present application, the two lead-out angles formed by the pull rope 110 after being turned by the rope guide 120 are the two angles α1 and α2 formed by the plane where the pull rope 110 and the rope guide 120 are located. When the tension of the pull rope 110 abutting on the rope guide 120 is known, trigonometric functions can be used to solve the force F exerted on the rope guide 120 under the action of the tension of the pull rope 110, so that the functional relationship among α1, α2 and F can be conveniently constructed.

[0094] For example, based on design experience or dragging conditions, the size ranges of α1 and α2 are determined, and then the software can be used to iteratively solve the values ​​of α1 and α2 when F is maximum. Multiple sets of solutions correspond to multiple dragging conditions, which is convenient for simulation analysis in combination with 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 parts. The performance verification method for the vehicle-mounted winch and its installation environment parts includes step S40, establishing a simulation model of the towing working condition of the winch 100, taking the limit load and the pulling angle of the pull rope 110 as input, performing a simulation analysis of the towing working condition of the winch 100, and obtaining 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 limit load and the pulling angle of the pull rope 110 as simulation analysis parameters into the simulation software, and gradually load the limit load from zero to the maximum and then gradually unload it to zero;

[0098] Step S43: Obtain the 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 parts 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 according to the actual reliability requirements: the physical inspection standards of no cracks, no deformation, no sticking, no looseness, and no rim damage are converted into simulation requirements, that is, the output analysis results are required to meet the target requirements for plastic strain and residual deformation. Therefore, the output of the analysis results needs to include the output of 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 parts. The performance verification method for the vehicle-mounted winch and its installation environment parts, step S41, constructing a simulation model of the towing working condition of the winch 100 by simulation software, includes the following steps:

[0102] Step S411, importing the assembly model of the vehicle frame and the winch 100 into the simulation software for assembly, cutting the vehicle frame, and implementing full constraints at the cut;

[0103] Step S412, performing 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: completing 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, when performing virtual simulation, the winch 100 is assembled to its connecting parts, generally a frame structure, including the rope guide 120 and its front bumper knot and other parts. In order to improve the simulation efficiency, the frame is cut off and full constraints are implemented at the cutoff. The cutoff area is adjusted according to simulation experience. It is recommended to use the cutoff area determined after benchmarking with the test as the actual cutoff area, which can better ensure that the frame cutoff length has the least impact on the simulation results.

[0107] Virtual simulations are performed on each connected environmental part and its assembly relationship according to the actual situation, and the consistency between the simulation and the real object is ensured as much as possible. Before strength verification of the model, according to the large deformation in the actual model, it is necessary to set it according to geometric nonlinearity. At the same time, since the real object is ultimately required not to break or fall off, the nonlinear setting of the material should be increased in 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 parts. Step S50 of the performance verification method for a vehicle-mounted winch and its installation environment parts is to evaluate the durability performance of the winch 100 and its installation environment parts according to 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, comparing the simulation analysis result 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 of the vehicle-mounted winch and its installation environment parts in the embodiment of the present application is to form a reliable durability performance evaluation method for the winch 100 and its force transmission components and connecting components. The evaluation index is set according to the actual reliability requirements and the engineering experience accumulated from virtual verification to determine whether the component is broken.

[0112] Exemplarily, the winch 100, the rope guide 120 and the connecting bracket 200 need to be judged whether they are broken and affect their use based on their maximum equivalent plastic strain, 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 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] The performance verification method of the vehicle-mounted winch and its installation environment of the embodiment of the present application shows that if the maximum equivalent plastic strain of the component is less than the preset percentage, it can be judged whether the component is broken and affects the use; if the maximum residual deformation of the component is less than the preset length value, it can be judged 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 result is 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 is not satisfied, the performance verification method of the vehicle-mounted winch and its installation environment parts of the embodiment of the present application analyzes the optimization countermeasures for the area that does not meet the performance. For example, the optimization direction can be combined with the process molding characteristics and cost of the relevant parts. Further, for the area that meets the performance, the space that can be optimized is sorted out, and the redundant design is carried out in combination with the process and design requirements.

[0117] Exemplarily, the simulation model of the present application can be modularly configured 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 of working conditions and calculation and solution processes are all in binary encoding format, the simulation model can be modularly set up, 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] 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, 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 retrieved through the include command of the simulation software, or by assigning values ​​to the parameters of the dynamic character area.

[0125] 5) According to the arrangement rules of the file, 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 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 described in 1)-6) are named in a standardized manner according to the parts, and a packageable file is formed. This file can also be used in other similar virtual verification work for related transplantation reference.

[0128] That is, the performance verification method of the winch provided in the example of the present application can sort out the user working conditions according to the actual usage scenarios of the winch by the users, integrate the user working conditions and the test working conditions, and iterate the working condition optimization and iteration, through the phenomena consistent with the test results and the test process, 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, 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 possible, thereby identifying and optimizing the reliable durability performance of the winch and its components in the whole vehicle environment.

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

[0131] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 the present application and simplifying the description, rather than indicating or implying 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 the present 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such 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 including 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0133] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

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 limit load of the pull rope on the winch; Establish a winch assembly model, take 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 largest is solved iteratively; Establish a winch towing working condition simulation model, take the limit load and the rope pulling angle as input, perform the 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 of the vehicle-mounted winch and its installation environment as claimed in 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 pulling force and the second pulling force, and take the larger value of the two as the limit load of the pull rope on the winch.

3. The performance verification method of the vehicle-mounted winch and its installation environment as claimed in 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 comprises 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, the rope guide and the connecting bracket is constructed in the 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 of the vehicle-mounted winch and its installation environment as claimed in claim 1, characterized in that: The method of 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 largest, includes the following steps: 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 pull rope passes through the rope guide. The objective function is constructed by taking the two lead-out angles formed by the rope after the rope guide is turned as the design variables and the maximum stress value of the rope guide as the target. The objective function is solved iteratively to obtain the two lead-out angles formed by the pull rope after turning through the rope guide.

5. The performance verification method of the vehicle-mounted winch and its installation environment as claimed in 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 of the vehicle-mounted winch and its installation environment as claimed in claim 1, characterized in that: The method of establishing a winch towing working condition simulation model, taking the limit load and the pull rope pulling angle as input, performing a winch towing working condition simulation analysis, and obtaining a simulation analysis result comprises the following steps: Construct a simulation model of the winch towing 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 of the vehicle-mounted winch and its installation environment as claimed in claim 6, characterized in that: The simulation model of the winch towing working condition is constructed by simulation software, comprising 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; Virtually simulate the assembly relationship of each component on the winch assembly model, as well as the assembly relationship between the winch assembly model and the 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 of the vehicle-mounted winch and its installation environment as claimed in claim 1, characterized in that: The method of evaluating the durability of the winch and its installation environment parts according to the simulation analysis results includes the following steps: Obtain the durability performance evaluation indicators of winches, rope guides and connecting brackets; The simulation analysis results are compared 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.

9. The performance verification method of the vehicle-mounted winch and its installation environment as claimed in 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 of the vehicle-mounted winch and its installation environment as claimed in claim 8, characterized in that: Also includes: 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 on the performance area that does not meet the requirements.

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