Strength bench test method and system for winch and mounting bracket
By applying incremental and multi-angle tensile static loads in the strength bench test of the winch and mounting bracket, the cracks and torque values are monitored, and the problems of low efficiency and high cost in the prior art are solved, and efficient durability is achieved verify.
Patent Information
- Application Number
- CN202411545249.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-01-07
AI Technical Summary
In the prior art, the durability and reliability verification methods of winch and mounting brackets are inefficient and costly, and relying on the durability verification of the whole vehicle road requires long time and high costs.
Provide a test method for strength bench for winch and mounting brackets. By building a test bench and applying incremental and multi-angle tensile static loads, the deformation of the test bench includes crack monitoring of fasteners and parts. , record the crack size, position and torque values to obtain the strength test results.
It effectively shortens the cycle of durability and reliability verification of winch and mounting brackets, reduces verification costs, and achieves efficient durability testing.
Smart Images
Figure CN119269131A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of vehicle bench testing, and in particular to a strength bench testing method and system for a winch and a mounting bracket. Background Art
[0002] The winch and mounting bracket are important components of the vehicle, and their strength directly affects the safety and service life of the vehicle.
[0003] In existing technologies, the durability and reliability verification of winches and mounting brackets usually relies on the road durability verification of the entire vehicle. However, this verification method has some problems, mainly including long verification cycles and high costs: the road durability verification of the entire vehicle requires long-term field testing, which not only requires a lot of resources and time, but also needs to consider various complex road conditions and environmental factors. In addition, the cost of the road durability verification of the entire vehicle is also very high, which is a considerable burden for enterprises.
[0004] Therefore, how to improve the efficiency and reduce the cost of durability and reliability verification of winches and mounting brackets is an important direction of current technological development. Summary of the invention
[0005] The present application provides a strength bench test method for a winch and a mounting bracket, which can solve the technical problems of low efficiency and high cost in the durability and reliability verification methods for winches and mounting brackets in the prior art.
[0006] In a first aspect, the present application provides a strength bench test method for a winch and a mounting bracket, comprising the following steps:
[0007] Building a test bench for the winch and mounting bracket;
[0008] Applying a tensile static load to the test bench to obtain deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction;
[0009] According to the deformation of the test bench under different tensile static loads during the test, the test results of the strength bench are obtained.
[0010] In combination with the first aspect, in one embodiment, the construction of a test bench for a winch and a mounting bracket specifically includes the following steps:
[0011] Place the frame or body on the test bench and fix it;
[0012] Assemble the winch and mounting bracket to the vehicle body or frame. The specifications and tightening torque of the fasteners used for installation are representative of production. All fasteners are marked with mobile identification marks, and all parts welding areas are marked with crack monitoring marks.
[0013] In combination with the first aspect, in one implementation, the mobile identification marking of all fasteners specifically includes the following steps:
[0014] Scribe all fastener areas and apply dye check developer to all fasteners.
[0015] In combination with the first aspect, in one implementation, the step of performing crack monitoring and marking on all welding areas of parts specifically includes the following steps:
[0016] Apply dye developer to all weld areas of the parts.
[0017] In combination with the first aspect, in one embodiment, applying a tensile static load to the test bench specifically comprises the following steps:
[0018] Connect the hydraulic actuator to the winch hook and apply a tensile static load to the test bench through the hydraulic actuator.
[0019] In combination with the first aspect, in one implementation, obtaining the deformation of the test bench specifically includes the following steps:
[0020] Obtaining the crack size, crack shape, crack location, tensile static load size corresponding to the crack generation and crack generation time in the frame or body, winch and mounting bracket; and / or,
[0021] Obtaining the displacement of the fastener; and / or,
[0022] Obtain post-test fastener torque values; and / or,
[0023] Get the structural cracks hidden inside the winch host and the fasteners.
[0024] In combination with the first aspect, in one implementation, the minimum static load is no higher than half of the rated tensile force.
[0025] In combination with the first aspect, in one embodiment, the direction of the tensile static load is a horizontal direction and an upward inclined direction, a downward inclined direction, a left inclined direction, and a right inclined direction.
[0026] In combination with the first aspect, in one embodiment, after applying a tensile static load to the test bench and obtaining the deformation of the test bench, the method further includes the following steps:
[0027] When the crack length of the test bench exceeds the preset length, the control stops the application of the tensile static load.
[0028] In a second aspect, the present application provides a strength bench test system for a winch and a mounting bracket, comprising:
[0029] Test bench construction module, used to build the test bench for winch and mounting bracket;
[0030] The bench test module is connected to the test bench building module in communication, and is used to apply a tensile static load to the test bench to obtain the deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction;
[0031] The test result acquisition module is connected to the test bench module for obtaining the test result of the strength bench according to the deformation of the test bench under different tensile static loads during the test.
[0032] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:
[0033] This application obtains the strength test results of the winch and the mounting bracket by building a test bench and applying increasing and angled tensile static loads to the test bench. It does not rely on the road durability test of the whole vehicle, and can effectively shorten the durability reliability verification cycle of the winch and the mounting bracket and reduce the verification cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 A schematic flow chart of a strength bench test method for a winch and a mounting bracket provided in an embodiment of the present application;
[0035] Figure 2 A functional module block diagram of a strength bench test system for a winch and a mounting bracket provided in an embodiment of the present application. DETAILED DESCRIPTION
[0036] In order to enable those skilled in the art to better understand the solution of the present application, 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 only 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 creative work are within the scope of protection of this application.
[0037] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.
[0038] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.
[0039] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.
[0040] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.
[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.
[0042] In a first aspect, the present application provides a strength bench test method for a winch and a mounting bracket, comprising the following steps:
[0043] Step S1: constructing a test bench for a winch and mounting bracket;
[0044] Step S2: applying a tensile static load to the test bench to obtain deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction;
[0045] Step S3: According to the deformation of the test bench under different tensile static loads during the test, the test result of the strength bench is obtained.
[0046] This application obtains the strength test results of the winch and the mounting bracket by building a test bench and applying increasing and angled tensile static loads to the test bench. It does not rely on the road durability test of the whole vehicle, and the durability test cost is low and the test efficiency is high.
[0047] In one embodiment, the step S1: building a test bench for a winch and a mounting bracket specifically includes the following steps:
[0048] Step S11: placing the vehicle frame or vehicle body on the test bench for fixing; specifically, placing the vehicle frame or vehicle body on the test bench and fixing it with a rigid fixture to ensure that the vehicle or vehicle body is stable and firm during the test; in this step, it should be ensured that there is enough space in the test room to install the vehicle frame or vehicle body and the rigid support of the winch and the mounting bracket; according to the size of the test part, a rigid fixture is customized to fix the frame or vehicle body; the vehicle body can be a non-load-bearing vehicle body or a load-bearing vehicle body, and the ±2% or more; the load-bearing vehicle body is the front vehicle body part;
[0049] Step S12: Assemble the winch and the mounting bracket on the vehicle body or frame. The specifications and tightening torque of the fasteners used for installation shall be representative of production, and all fasteners shall be marked for movement identification, and all parts welding areas shall be marked for crack monitoring; specifically, the winch and the mounting bracket shall be installed on the frame / body according to the assembly and installation instructions. The specifications and torque of the fasteners shall be representative of production. All fasteners shall be marked with a line and smeared with a dye inspection developer to help identify the movement of the fasteners; and a dye inspection developer shall be applied to all parts welding areas for crack detection.
[0050] Based on step S11, the whole vehicle test environment of the winch and the mounting bracket is simulated, and based on step S12, a basis for collecting durability test data is provided for the whole vehicle simulation test.
[0051] In one embodiment, the step S2: applying a tensile static load to the test bench specifically comprises the following steps:
[0052] Connect the hydraulic actuator to the winch hook and apply a tensile static load to the test bench through the hydraulic actuator; in this step, the hydraulic actuator should have sufficient capacity to apply the static load.
[0053] In one embodiment, in step S2, the tensile static load value of the minimum static load starts to increase gradually from a value lower than half of the rated tensile force as shown in the following formula until the rated tensile force is reached:
[0054] F=F 额定 ×0.5;
[0055] Where, F is the minimum static load that the traction device can bear, in N; F 额定 —Rated pulling force of winch, in N.
[0056] In one embodiment, in step S2, the directions of applied force are horizontal, upwardly inclined, downwardly inclined, leftwardly inclined, and rightwardly inclined; specifically, the horizontal direction is the length direction in which the traction rope passes through the center point of the working area of the traction device and is parallel to the vehicle; specifically, the directions of applied force are horizontally forward, upward 15°, downward 15°, leftward 15°, and rightward 15°, and the minimum static load of the pull rope is applied once in each direction; in this step, a tensile static load is a process of increasing from less than half of the rated tension to the rated tension or a crack exceeding a preset length appears, and the test is terminated.
[0057] In one embodiment, the step S3: obtaining the deformation of the test bench specifically includes the following steps:
[0058] Step S3A: obtaining the crack size, crack shape, crack location, tensile static load size corresponding to the crack generation and crack generation time in the frame or body, winch and mounting bracket; and / or,
[0059] Step S3B: obtaining the displacement of the fastener; and / or,
[0060] Step S3C: Obtain the torque value of the fastener after the test; specifically, by using a disc or digital recording torque wrench (accuracy ±2% or above); and / or,
[0061] Step S3D: Obtain structural cracks inside the winch host and hidden by fasteners.
[0062] Steps S3A to S3D are all acquired through a data acquisition system, which can record the static load and displacement at the actuator input for post-test analysis and playback.
[0063] In one embodiment, during the process of executing step S3: obtaining the deformation of the test bench, the following events should be recorded:
[0064] Any cracks in the winch and mounting bracket or frame / body that occur before 100% testing is completed.
[0065] Any fastener torque during or after the test is less than 60% of the initial minimum torque value.
[0066] As an important evaluation parameter for the durability test of winches and mounting brackets.
[0067] Based on step S3, a durability test report of the winch and the mounting bracket is generated, specifically including the following contents:
[0068] Summary of all events;
[0069] photographs of equipment, samples and any events;
[0070] Copies of all test log data sheets;
[0071] Pre-test / post-test torque values for each sample.
[0072] In one embodiment, the step S3: after applying a tensile static load to the test bench and obtaining the deformation of the test bench, further comprises the following steps:
[0073] Step S4: When the crack length of the test bench exceeds a preset length, control is performed to stop applying the tensile static load; specifically, attention should be paid to the start of any cracks in the vehicle or body and the winch and mounting bracket structure, and the test requester should be notified. When the crack length exceeds 50 mm, the test is terminated.
[0074] In a second aspect, the present application provides a strength bench test system for a winch and a mounting bracket, comprising:
[0075] Test bench construction module, used to build the test bench for winch and mounting bracket;
[0076] The bench test module is connected to the test bench building module in communication, and is used to apply a tensile static load to the test bench to obtain the deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction;
[0077] The test result acquisition module is connected to the test bench module for obtaining the test result of the strength bench according to the deformation of the test bench under different tensile static loads during the test.
[0078] Among them, the functional implementation of each module in the above-mentioned winch and mounting bracket strength bench test system corresponds to the steps in the above-mentioned winch and mounting bracket strength bench test method embodiment, and its functions and implementation processes will not be repeated here one by one.
[0079] In a third aspect, an embodiment of the present application provides a strength bench test equipment for a winch and a mounting bracket. The strength bench test equipment for a winch and a mounting bracket may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.
[0080] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the strength test bench of winch and mounting bracket, and the interface used to realize the interconnection of the strength test bench of winch and mounting bracket with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.
[0081] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0082] The processor may be a general-purpose processor, which may call the strength bench test program of the winch and the mounting bracket stored in the memory, and execute the strength bench test method of the winch and the mounting bracket provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the strength bench test program of the winch and the mounting bracket is called may refer to the various embodiments of the strength bench test method of the winch and the mounting bracket of the present application, which will not be repeated here.
[0083] In a fourth aspect, an embodiment of the present application also provides a readable storage medium.
[0084] The readable storage medium of the present application stores a strength bench test program for a winch and a mounting bracket, wherein when the strength bench test program for a winch and a mounting bracket is executed by a processor, the steps of the strength bench test method for a winch and a mounting bracket as described above are implemented.
[0085] Among them, the method implemented when the strength bench test procedure of the winch and the mounting bracket is executed can refer to the various embodiments of the strength bench test method of the winch and the mounting bracket of the present application, and will not be repeated here.
[0086] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.
[0087] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.
[0088] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A strength bench test method for a winch and a mounting bracket, characterized in that: The following steps are involved: Building a test bench for the winch and mounting bracket; Applying a tensile static load to the test bench to obtain deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction; According to the deformation of the test bench under different tensile static loads during the test, the test results of the strength bench are obtained.
2. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: The test bench for constructing the winch and the mounting bracket specifically includes the following steps: Place the frame or body on the test bench and fix it; Assemble the winch and mounting bracket on the vehicle body or frame. The specifications and tightening torque of the fasteners used for installation are representative of production. All fasteners are marked with mobile identification marks, and all parts welding areas are marked with crack monitoring marks.
3. The strength bench test method of the winch and the mounting bracket according to claim 2, characterized in that: The mobile identification marking of all fasteners specifically includes the following steps: Scribe all fastener areas and apply dye check developer to all fasteners.
4. The strength bench test method of the winch and the mounting bracket according to claim 2, characterized in that: The crack monitoring and marking of all parts welding areas specifically includes the following steps: Apply dye developer to all weld areas of the parts.
5. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: The tensile static load is applied to the test bench, specifically comprising the following steps: Connect the hydraulic actuator to the winch hook and apply a tensile static load to the test bench through the hydraulic actuator.
6. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: The step of obtaining the deformation of the test bench specifically includes the following steps: Obtaining the crack size, crack shape, crack location, tensile static load size corresponding to the crack generation and crack generation time in the frame or body, winch and mounting bracket; and / or, Obtaining the displacement of the fastener; and / or, Obtain post-test fastener torque values; and / or, Get the structural cracks hidden inside the winch host and the fasteners.
7. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: The minimum static load is not higher than half of the rated tensile force.
8. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: The directions of the tensile static load are horizontal, upward, downward, left, and right.
9. The strength bench test method of the winch and the mounting bracket according to claim 1, characterized in that: After applying a tensile static load to the test bench and obtaining the deformation of the test bench, the method further includes the following steps: When the crack length of the test bench exceeds the preset length, the control stops applying the tensile static load.
10. A strength bench test system for a winch and a mounting bracket, characterized in that: include: Test bench construction module, used to build the test bench for winch and mounting bracket; The bench test module is connected to the test bench building module in communication, and is used to apply a tensile static load to the test bench to obtain the deformation of the test bench, wherein the tensile static load increases from a minimum static load to a rated tensile force, and the direction of the tensile static load is a multi-angle direction; The test result acquisition module is connected to the test bench module for obtaining the test result of the strength bench according to the deformation of the test bench under different tensile static loads during the test.