A torsion bearing load deformation test device and method

Abstract

The application provides a torsion bearing load deformation test device and method, which comprises a torsion shaft test installation platform, a torsion shaft test loading support and a torsion shaft test loading platform. The torsion shaft test installation platform is a frame structure, and the frame structure is used for placing a torsion shaft to be subjected to load deformation test. The torsion shaft test loading support comprises two support plates with the same structure and is installed below the torsion shaft test loading platform. The distance between the two support plates is consistent with the length of the horizontal placed torsion shaft to be tested, and the two support plates are used for clamping the torsion shaft to be tested on the torsion shaft test installation platform. The torsion shaft test loading support provides a torsional torque to the torsion shaft to be tested. The torsion shaft test loading platform comprises a support plate and is used for bearing the gravity of a gravity block and evenly distributing the gravity on both ends of the torsion shaft.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of torsion bearing load deformation test, and particularly relates to a torsion bearing load deformation test device and method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] In order to fully understand the working performance of the torsion shaft, optimize the design and predict the performance in actual application, the torsion bearing load deformation test is performed to evaluate the deformation behavior and mechanical properties of the torsion shaft under torsional load, including evaluating the load-carrying capacity of the torsion shaft, understanding the deformation characteristics of the torsion shaft, predicting the service life of the torsion shaft, etc.

[0004] However, the current load deformation test experiment has a complex structure, high professional difficulty, high equipment cost, large amount of data generated during testing, and complex data processing and analysis is required to obtain a conclusion. This method can only meet the use requirements of a part of large-scale enterprises, but is not the ideal cost-effective choice for most enterprises. Therefore, a new test scheme is needed to quickly test the load deformation of the torsion shaft to meet the requirements of most enterprises. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a torsion bearing load deformation test device, which can test the relative relationship between the tire mounting center of the torsion shaft and the mounting bracket of the shaft under the action of no load, full load and impact load, so as to select the axle and design the technical state of the whole vehicle during the design process.

[0006] To achieve the above object, one or more embodiments of the present application provide the following technical solutions:

[0007] In a first aspect, a torsion bearing load deformation test device is disclosed, comprising:

[0008] a torsion shaft test mounting platform, a torsion shaft test loading bracket and a torsion shaft test loading platform;

[0009] The torsion shaft test mounting platform is a frame structure, and the frame structure is used to place the torsion shaft to be tested for load deformation;

[0010] The torsion shaft test loading bracket includes two identical connection structures, which are respectively installed below the torsion shaft test loading platform, the distance between the two connection structures is consistent with the length of the horizontal placed torsion shaft to be tested, and the two connection structures are used to clamp the torsion shaft to be tested on the torsion shaft test mounting platform, and the torsion shaft test loading bracket provides a torsional torque to the torsion shaft to be tested.

[0011] The torsion shaft test loading platform comprises a support plate for bearing the gravity of the gravity block and evenly distributing it on both ends of the torsion shaft.

[0012] As a further technical solution, the frame structure comprises a rectangular bottom frame and a rectangular upper frame, the area of the rectangular bottom frame is greater than that of the rectangular upper frame, and support rods are arranged in a cross arrangement between the diagonals in the rectangular upper frame.

[0013] The first support rod and the second support rod are arranged respectively near the two wide positions of the rectangular bottom frame, and the first support rod and the second support rod are parallel to the wide frame of the rectangular bottom frame.

[0014] The first support rod, the second support rod and the long frame of the rectangular bottom frame are respectively provided with a stand; and support rods are arranged in a cross arrangement between the diagonals of the structure surrounded by the first support rod, the second support rod and the long frame of the rectangular bottom frame.

[0015] The rectangular bottom frame and the rectangular upper frame are supported by a plurality of stands, the plurality of stands form four faces, and each face is provided with a plurality of support rods.

[0016] As a further technical solution, the rectangular upper frame is provided with a support block as a wide frame, one end of the support block is fixed to the rectangular upper frame as a wide frame, and the other end is fixed to the stand through a support rod.

[0017] As a further technical solution, a limiting structure is arranged on the support block, the limiting structure comprises a limiting bottom plate and limiting side plates arranged on both sides of the limiting bottom plate, the limiting side plates are provided with limiting grooves, the limiting grooves are used to accommodate the shaft of the torsion shaft, the limiting bottom plate is provided with bolt holes, and the limiting bottom plate and the support block are connected through bolts.

[0018] As a further technical solution, the limiting side plate is also provided with a plurality of holes.

[0019] As a further technical solution, the connecting structure comprises an upper wide and lower narrow vertical connecting plate and a horizontal connecting plate integrally formed therebetween, a shaft hole is arranged near the lower end of the connection, the hole penetrates the outermost end structure of the torsion shaft, bolt holes are uniformly arranged around the hole, and the bolt penetrates the hole to fix the connecting plate and the torsion shaft.

[0020] As a further technical solution, the support plate comprises a rectangular frame structure, a rectangular plate is arranged in the middle of the frame structure, the length of the rectangular plate is less than the length of the rectangular frame structure, and a recessed plate is arranged directly on the wide frame of the rectangular frame structure; the recessed plate is provided with bolt holes for fixedly connecting the recessed plate and the horizontal connecting plate at the upper end of the connecting plate.

[0021] As a further technical solution, the groove plate comprises a bottom plate and side plates arranged on both sides of the bottom plate, and the side plates on both sides together with the bottom plate form the groove.

[0022] As a further technical solution, the vertical connecting plate and the horizontal connecting plate are respectively arranged on the wing plate.

[0023] In a second aspect, a torsion bearing load deformation test method is disclosed, which is divided into three different load working conditions, including:

[0024] No-load test: no load is applied on the torsion shaft test loading platform, the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports is measured by using an electronic scale and recorded;

[0025] Full-load test: the loading gravity block is lifted by the electronic scale using the travelling crane, the weight of the loading gravity block is recorded, the loading gravity block is slowly lifted to the torsion shaft test loading platform and slowly loaded, the torsion shaft test loading platform is ensured to be horizontal during the loading process, the change of the electronic scale reading is observed, and the reduction of the electronic scale reading is the loaded load;

[0026] Impact load test: continue to slowly load, when the loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports measured in advance are twice the torsion shaft load, the travelling crane is stabilized and kept, after the torsion shaft and the electronic scale reading are no longer changed, the loading weight is recorded and the values of H and L are measured.

[0027] As a further technical solution, a torque sensor installed on the torsion shaft is used to measure the torsional force in real time, when the loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports measured in advance are the torsion shaft load, the travelling crane is stabilized and kept, after the torsion shaft and the electronic scale reading are no longer changed, the loading weight is recorded and the values of H and L are measured by the displacement sensor.

[0028] The above one or more technical solutions have the following beneficial effects:

[0029] The technical solution of the present application mainly uses the torsion shaft test installation platform, the torsion shaft test loading support and the torsion shaft test loading platform as the basis for testing, removes unnecessary components and complex mechanical structures, and uses fewer components and more direct mechanical paths to realize the functions. For example, the travelling crane only needs to be able to lift the gravity block and other load equipment and can be equipped with an electronic scale.

[0030] The technical scheme of the present application adopts the modular principle in design, so that each part can be replaced or upgraded independently, reducing maintenance cost and complexity. For example, the travelling crane and the test platform are not integrated, and more suitable equipment can be replaced and upgraded in the future. The equipment is easy to maintain and repair, and the operation is simple during testing, so that the user can quickly master the use of the equipment.

[0031] The technical scheme of the present application can work stably under different environmental conditions, and the environmental requirements are lower than those of other similar test equipment, effectively reducing the additional cost caused by environmental factors. Various high-precision sensors are used to accurately measure various required data, effectively avoiding errors caused by manual measurement and other factors.

[0032] The advantages of the additional aspects of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings accompanying the specification of the present application form a part thereof and serve to provide further understanding of the present application, the illustrative embodiments of the present application and its description serve to explain the present application, and do not constitute an improper limitation of the present application.

[0034] Figure 1 Structure schematic view of the test device for the load deformation test of the example torsion bearing of the present application;

[0035] Figure 2 Overall schematic view of the example torsion bearing of the present application;

[0036] Figure 3 Overall schematic view of the example torsion bearing of the present application;

[0037] Figure 4 Schematic view of the test installation platform of the example torsion bearing of the present application;

[0038] Figure 5 Schematic view of the test loading platform and support of the example torsion bearing of the present application;

[0039] Figure 6 Schematic view of the travelling crane of the example of the present application;

[0040] Figure 7 Schematic view of the loading gravity block of the example of the present application;

[0041] Figure 8 Flowchart of the load deformation test of the example torsion bearing of the present application;

[0042] Figure 9 Schematic view of the test process related parameters of the example of the present application;

[0043] Figure 10It is a schematic diagram of the torsion bearing load deformation test record of the embodiment of the present application.

[0044] Figure 11 It is a partial enlarged view of the torsion shaft test installation platform of the embodiment of the present application.

[0045] Figure 12 It is a partial enlarged view of the torsion shaft test loading support of the embodiment of the present application.

[0046] Figure 13 It is a partial enlarged view of the torsion shaft test loading platform of the embodiment of the present application.

[0047] In the figure, 1 is a row of hangers; 2 is a hanger type electronic scale; 3 is a loading gravity block; 4 is a torsion shaft test loading platform; 5 is a torsion shaft test loading support; 6 is a torsion shaft; 7 is a torsion shaft test installation platform. DETAILED DESCRIPTION

[0048] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0049] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0050] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0051] Embodiment one

[0052] Referring to the accompanying Figure 1 The present embodiment discloses a torsion bearing load deformation test device, which comprises:

[0053] a torsion shaft test installation platform, a torsion shaft test loading support and a torsion shaft test loading platform;

[0054] The torsion shaft test installation platform is a frame structure, and the frame structure is used to place the torsion shaft to be tested for load deformation.

[0055] The torsion shaft test loading support comprises two identical connecting structures, which are respectively installed below the torsion shaft test loading platform, the distance between the two connecting structures is consistent with the length of the horizontally placed torsion shaft to be tested, and the two connecting structures are used to clamp the torsion shaft to be tested on the torsion shaft test installation platform, and the torsion shaft test loading support provides a torsional torque to the torsion shaft to be tested.

[0056] The torsion shaft test loading platform comprises a support plate, which is used to bear the gravity of the gravity block and evenly distribute the gravity on both ends of the torsion shaft.

[0057] Referring to the drawings Figure 4 As shown in the drawings, the frame structure comprises a rectangular bottom frame and a rectangular upper frame, the area of the rectangular bottom frame is larger than that of the rectangular upper frame, and diagonal supports are arranged in the rectangular upper frame;

[0058] The first support and the second support are arranged near the two wide positions of the rectangular bottom frame, and the first support and the second support are parallel to the wide frame of the rectangular bottom frame;

[0059] The first support, the second support and the long frame of the rectangular bottom frame are respectively provided with a vertical column; diagonal supports are arranged between the structures surrounded by the first support, the second support and the long frame of the rectangular bottom frame;

[0060] The rectangular bottom frame and the rectangular upper frame are supported by a plurality of vertical columns, the plurality of vertical columns form four faces, and each face is provided with a plurality of support rods.

[0061] The rectangular upper frame is provided with a support block as a wide frame, one end of the support block is fixed to the rectangular upper frame as a wide frame, and the other end is fixed to the vertical column through a support rod.

[0062] Referring to the drawings Figure 12 As shown in the drawings, the support block is provided with a limiting structure, the limiting structure comprises a limiting bottom plate and limiting side plates arranged on both sides of the limiting bottom plate, the limiting side plates are provided with limiting grooves, the limiting grooves are used to accommodate the shaft of the torsion shaft, the limiting bottom plate is provided with bolt holes, and the limiting bottom plate and the support block are connected through bolts.

[0063] The limiting side plate is also provided with a plurality of holes.

[0064] Referring to the drawings Figure 12 As shown in the drawings, the connecting structure comprises an upper wide and lower narrow vertical connecting plate and a horizontal connecting plate which are integrally formed, a shaft hole is arranged near the lower end of the connecting plate, the hole penetrates the outermost end structure of the torsion shaft, bolt holes are uniformly arranged around the hole, and the bolts penetrate the hole to fix the connecting plate and the torsion shaft.

[0065] Referring to the drawings Figure 5 As shown in the drawings, the support plate comprises a rectangular frame structure, a rectangular plate is arranged in the middle of the frame structure, and the length of the rectangular plate is less than the length of the rectangular frame structure.

[0066] Referring to the drawings Figure 13 As shown in the drawings, the rectangular plate and the wide frame of the rectangular frame structure are directly provided with a groove plate; the groove plate is provided with bolt holes for fixedly connecting the groove plate and the horizontal connecting plate at the upper end of the connecting plate.

[0067] The groove plate comprises a bottom plate and side plates arranged on both sides of the bottom plate, and the side plates on both sides and the bottom plate together form a groove.

[0068] The vertical connecting plate and the horizontal connecting plate are also arranged on the wing plate.

[0069] In this embodiment, the torsion shaft test installation platform is a metal frame structure, and the frame connection is connected by welding. Through checking, it can withstand all test loads.

[0070] The torsion shaft test loading bracket is connected with the loading platform by high-strength bolt and nut group to ensure reliable connection during the experiment and prevent falling off. The load of the loading platform is distributed to both ends of the object to be tested.

[0071] The torsion shaft test loading platform: the material of the platform needs to meet the requirements of stiffness, strength and hardness, and its capacity must be able to withstand the load brought by various specifications of gravity and not produce deformation.

[0072] In this embodiment, the torsion shaft test installation platform is the support of the entire experimental device, which requires to withstand all experimental loads and the weight of the object to be tested.

[0073] The advantages are as follows:

[0074] Stress aspect:

[0075] The frame support structure can effectively resist horizontal load through the combination of frame and support. The existence of support can limit the lateral deformation of the frame and improve the overall stability of the structure. When subjected to horizontal force, the support can transmit the force to each part of the frame, so that the entire structure is jointly stressed, thereby reducing the stress of individual components and improving the safety of the structure. In the frame support structure, the frame and the support jointly bear the vertical and horizontal loads. The frame mainly bears the vertical load, while the support mainly bears the horizontal load. This division of labor enables the internal force to be more reasonably distributed to each component, avoiding the destruction caused by excessive stress of some components.

[0076] Material saving:

[0077] Since the frame support structure can effectively resist horizontal load, the cross-sectional size of the frame column and beam can be reduced. At the same time, reducing the size of the components can also reduce the self-weight of the structure and the cost of the foundation.

[0078] Torsion shaft test loading bracket:

[0079] It bears all the loading loads and transmits them to the torsion shaft. It is required to have sufficient stiffness and strength during the experiment to ensure that no deformation occurs during the experiment.

[0080] The advantages are reflected in the following aspects:

[0081] High-strength steel supports have high load-bearing capacity and rigidity, allowing for more optimized structural designs and reducing material usage. Their lighter weight also reduces transportation and installation costs.

[0082] Torque shaft test loading platform:

[0083] Loading supports are used to bear loads such as gravity blocks and to evenly distribute the load to both sides.

[0084] The advantages are mainly reflected in the following aspects:

[0085] The entire platform is made of high-strength materials and has excellent load-bearing capacity, which can evenly distribute the load across the entire platform surface.

[0086] A high-rigidity loading platform can maintain small deformation when subjected to loads, effectively reducing the impact of external vibrations and disturbances on test experiments.

[0087] See appendix Figure 1 As shown, the torsion shaft test mounting platform is placed on a level surface and secured. The torsion shaft mounting bracket is reliably fixed to the torsion shaft test mounting platform using bolts and nuts. The torsion shaft test loading bracket is reliably fixed using bolts and nuts and fitted into the corresponding rim mounting bolts on the wheel hub. The torsion shaft test loading platform is reliably fixed to the torsion shaft test loading bracket using high-strength bolts and nuts. The torsion shaft test loading bracket is then adjusted to be level. During adjustment: a level is placed at the torsion shaft test loading platform to ensure that the supports on both sides of the torsion shaft test loading platform are subjected to uniform force.

[0088] Due to incompatibility between the torsion shaft installation method and existing testing equipment, the dimensions of the connection parts are mismatched, rendering it unusable. In this implementation example, please refer to the appendix. Figure 2 , 3 As shown, the torsion shaft uses a hollow torsion shaft tube. Four rubber rods are cooled and shrunk by liquid nitrogen and placed inside. After returning to room temperature, they expand and fill the entire torsion shaft tube to achieve an interference fit. Rubber torsion shafts have advantages such as unrestricted structural shape, large elastic deformation, high damping, ability to withstand multi-directional loads simultaneously, and convenient installation and disassembly. Considering the characteristics of the rubber torsion shaft, using it as the experimental subject in this study allows for sufficient experimental data to more accurately test the feasibility of this experimental method. Verification has shown that this experimental method is indeed feasible. The torsion shaft uses a high-performance rubber torsion axle, suitable for various RVs and trailers, to test torsional deformation under different load conditions such as no-load, full-load, and impact loads.

[0089] The above-mentioned torsion shaft is taken as a test object, and the load bearing performance of torsional deformation thereof is mainly tested. The torsion of the shaft and the body can be fixed as a fixed torque reference, and the torsion shaft can be reliably fixed on the torsion shaft test installation platform through the bolt and nut group.

[0090] The torsion shaft test installation platform in the embodiment is shown in FIG. 1, which has the functions of bearing and ensuring the horizontal placement of the torsion shaft. When in use, it is placed on a clean and flat factory floor, and a level is used to adjust the plane of the torsion shaft installation to be horizontal, and ensure the fixation of the installation platform. Figure 3

[0091] The torsion shaft test loading bracket is shown in FIG. 2, and the gravity block and other loading devices are installed on the loading platform. The loading platform bears the gravity, and the force is transmitted to both sides of the torsion shaft through the installation bracket, which is used to provide torsional torque to the torsion shaft. When in use, it is sleeved in the hub corresponding to the rim mounting bolt, and is reliably fixed by using a nut. The torsion shaft test loading platform is used to bear the gravity of the gravity block and evenly distribute it on both ends of the torsion shaft. When in use, it is reliably fixed on the torsion shaft test loading bracket, and the torsion shaft test loading bracket is adjusted to be horizontal. Figure 4 5 The crane is used to lift and move the gravity block, and the actual load at a certain time is tested by using an electronic scale and other measuring tools. When in use, the position of the crane should be fixed, and the electronic scale, gravity block and other instruments should be fixed reliably, and the electronic scale and other test instruments should be calibrated.

[0092] The gravity block is shown in FIG. 3, which is the main loading device. The actual loading load is determined by the difference between the weight of the gravity block and the reading of the electronic scale. The gravity block can be divided into various specifications, and the weight of the gravity block should be confirmed in advance when in use. Figure 6 In order to ensure the accuracy of the measurement data, various sensors and other auxiliary measuring equipment are provided in the device, such as a torque sensor, a torque flange type sensor, which is installed at the connection between the torsion shaft and the installation bracket, and measures the torsional force in real time; a displacement sensor should be installed in alignment with the two shaft heads of the torsion shaft, to ensure accurate measurement of the actual displacement of the torsion shaft. The displacement and deformation of the torsion shaft under stress are measured; a strain gauge is directly installed and bonded on the surface of the measured torsion shaft by using appropriate industrial adhesive. The stress and fatigue force of the attached material are directly measured by using the electrical conductivity characteristics, which is used to measure the small strain on the torsion shaft, and can be used for fine mechanical property analysis; an environmental sensor is used, which is a temperature and humidity sensor installed on the torsion shaft test installation platform. The temperature, humidity and other key parameters in the experimental environment are measured and recorded.

[0093] Figure 7

[0094] ​​​​​

[0095] Accuracy and Reliability: The device uses advanced sensors and data acquisition technology to obtain high-precision, high-resolution real-time data. Automated data collection reduces errors and biases that may occur when manually recording data. It can collect a large amount of data in a very short time, especially in applications that require continuous or high-frequency sampling.

[0096] The sensors used in this embodiment technology are all wireless transmission, such as WiFi, Bluetooth transmission, etc., which can effectively avoid the problem of wiring difficulty. The sensor integrates a microprocessor inside, which can perform preliminary processing on the collected data, such as filtering, amplification, digitization, etc. Engineers receive data through the background human-computer interface, analyze the data, and then design and optimize the next step.

[0097] The specific working principle of the above test equipment is:

[0098] After the test torsion shaft is installed and fixed, the initial data of the torsion shaft is measured and recorded. The driver slowly places the gravity block on the loading platform for loading. The loading platform transmits the load applied by the gravity block to the torsion shaft through the two side installation supports, so that the torsion shaft deforms.

[0099] Example two

[0100] Referring to FIG. 1, the embodiment discloses a torsion bearing load deformation test method, which comprises: Figure 8

[0101] During the test, the load weight of the torsion shaft, the support state, and the initial angle are confirmed in advance and recorded in the corresponding positions of the "torsion shaft load deformation test record table".

[0102] The load weight of the torsion shaft, the support state, and the initial angle are recorded. According to the comparison of the test data in the later period, the deformation of the torsion shaft under different loading modes can be determined.

[0103] ​Before the test, the sensor is fixed on a stable support or base, for example, the environmental sensor is fixed on the torsion shaft test installation support. Connect all the necessary sensors, check if the sensor is fixed firmly and calibrated before the experiment starts, ensure that the sensor will not move or vibrate during the measurement process, ensure that the data acquisition unit and the sensor and computer system are correctly connected. When installing the sensor, the installation position should be carefully measured and evaluated to minimize data bias. Try to minimize the gap between the torsion shaft and the torsion shaft to ensure effective measurement. Environmental factors such as temperature, humidity, vibration, etc. should be considered when installing the sensor, and protective measures such as protective cover and shock absorbing device should be taken if necessary. The measurement direction of the sensor should be aligned with the movement direction of the measured torsion shaft, and the displacement sensor should be aligned with the deformation direction of the torsion shaft movement to avoid angle error. According to the change speed of the measured object, set appropriate sampling frequency to ensure the continuity and accuracy of the data.

[0104] The test process related parameters and torsion shaft bearing deformation test record table are shown in Figs. 1-3. Figure 9 and 10 .

[0105] Before collecting data, zero-point calibration is required to ensure that the reference point of the measurement data is correct. Find the center of the shaft and the center of the shaft head on the torsion shaft and make a record point, configure the data acquisition system or software, measure the displacement and deformation of the torsion shaft under stress, record the measurement data in real time, and store the data on the computer or other storage devices. Use the collected data for analysis, calculate displacement, velocity, acceleration, etc., and filter the data to remove noise.

[0106] Three different working conditions have three different sets of data, so calculating the relevant displacement data can help designers more accurately locate the advantages and disadvantages of product design and analyze potential problems.

[0107] This test is mainly displacement calculation, and the data obtained during the test is compared with the initial data recorded at the beginning of the test to obtain the displacement of each working condition.

[0108] The specific test is divided into three different load working conditions:

[0109] Empty load test: no load is applied on the torsion shaft test loading platform, and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports is measured and recorded using an electronic scale. Measure the values of H and L through the sensor, and enter them into the corresponding axis empty load table left and right value cells respectively.

[0110] Full load test: use the row crane to lift the loading gravity block by electronic scale, record the weight of the loading gravity block, slowly lift the loading gravity block to the torsion shaft test loading platform, and slowly load, ensure that the torsion shaft test loading platform is horizontal during the loading process, observe the change of the electronic scale reading, and the decrease of the electronic scale reading is the loaded load.

[0111] The torsional force is measured in real time by the torque sensor. When the loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports measured in advance are the torsion shaft load, the row crane is stabilized and kept for 10s. After the torsion shaft and the electronic scale reading are no longer changed, the loading weight is recorded and the values of H and L are measured, which are respectively entered into the left and right value cells of the full load table of the corresponding shaft. According to the data obtained by the experiment, compared with the expected design, the next step of optimization is carried out.

[0112] The loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports measured in advance are the torsion shaft load, which is specifically:

[0113] G 重力块 +G 试验装置自重 =F 扭力轴最大载荷

[0114] For example, when the maximum load bearing of the measured torsion shaft is 3500 pounds, the total weight of the gravity block, test platform and test support at this time should be equivalent to the maximum load bearing of the torsion shaft.

[0115] Impact load test: continue to load slowly. When the loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports measured in advance are twice the torsion shaft load, the row crane is stabilized and kept for 10s. After the torsion shaft and the electronic scale reading are no longer changed, the loading weight is recorded and the values of H and L are measured, which are respectively entered into the left and right value cells of the impact load table of the corresponding shaft. According to the H and L data obtained by the specific test, compared with the expected design, the next step of optimization is carried out. The purpose of this test is to almost equivalent to the limit position when the torsion shaft is subjected to impact load. At this time, the measured values of H and L can be regarded as the position when the torsion shaft is subjected to impact load, so as to further check, design and optimize.

[0116] It should be noted that the design requires the torsion shaft to have a very high safety factor to ensure that the torsion shaft will not fail under various extreme conditions. It is reasonable to use twice the full load to simulate impact load, fully considering the possibility of unexpected impact, and using higher simulation load can help to find potential design weaknesses and risks, and provide greater safety margin for the product.

[0117] After performing three consecutive experiments, the consistency and reliability of data collection should be ensured. The experimental data is subjected to thorough quantitative analysis to ensure the accuracy and depth of the analysis results. By carefully comparing the experimental results with the established design specifications, key deviation parameters are identified. Using these rigorously validated analysis results, a comprehensive technical evaluation of the current design scheme is conducted.

[0118] The three experiments represent three different load conditions. Specifically, empty load, full load, and impact load.

[0119] Quantitative analysis: The three obtained experimental data can be compared with the results obtained from simulation software simulation to preliminarily determine the accuracy of the experimental results.

[0120] During the evaluation process, potential weaknesses and improvement spaces in the design should be identified systematically. On this basis, a series of targeted optimization strategies and improvement measures are developed to improve the overall performance of the design, ensure that it meets the established technical standards and performance indicators, and thus achieve the optimization of the design and the improvement of the function.

[0121] Specifically, the performance of the torsion shaft during the test is evaluated, such as whether the data of the measured torsion shaft meets the standard, whether the deformation amount is within the design requirement range, and whether the safety of the torsion shaft meets the standard.

[0122] This experimental method can test the relative relationship between the tire mounting center of the torsion shaft and the mounting bracket of the shaft under the action of empty load, full load, and impact load, so as to provide a reference for other enterprises in the design process of selecting axle and designing and checking the technical state of the whole vehicle.

[0123] The data performance of the relative relationship between the tire mounting center of the torsion shaft and the mounting bracket of the shaft under different loads is, Figure 9 the change of each value.

[0124] Although the specific embodiments of the present application have been described above in combination with the drawings, it is not a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications or variations made by those skilled in the art without creative labor on the basis of the technical solutions of the present application are still within the protection scope of the present application.

Claims

1. A test apparatus for testing the deformation of a torsion bearing under load, characterized in that, include: Torque shaft test mounting platform, torsion shaft test loading bracket, and torsion shaft test loading platform; The torsion shaft test mounting platform is a frame structure, on which the torsion shaft to be subjected to load deformation test is placed; The torque shaft test loading bracket includes two identical connecting structures, which are respectively installed below the torque shaft test loading platform. The distance between the two connecting structures is the same as the length of the horizontally placed torque shaft to be tested, and is used to hold the torque shaft to be tested on the torque shaft test mounting platform. The torque shaft test loading bracket provides torsional torque to the torque shaft to be tested. The torsion shaft test loading platform includes a support plate for bearing the weight of the gravity block and distributing it evenly across both ends of the torsion shaft; The frame structure includes: a rectangular base frame and a rectangular top frame, wherein the area of ​​the rectangular base frame is larger than the area of ​​the rectangular top frame, and cross-arranged support rods are provided between the diagonals inside the rectangular top frame; The rectangular base frame is provided with a first support rod and a second support rod near the two width positions, and the first support rod and the second support rod are parallel to the rectangular base frame as the width. A column is provided at the junction of the first support rod, the second support rod, and the long frame of the rectangular base frame; support rods are arranged in a cross pattern between the diagonals of the structure enclosed by the first support rod, the second support rod, and the long frame of the rectangular base frame. The rectangular bottom frame and the rectangular top frame are supported by several columns, which form four sides, and each side is provided with multiple support rods; The rectangular upper frame, which serves as the wide border, is provided with support blocks. Each support block is provided with a limiting structure, which includes a limiting base plate and limiting side plates on both sides of the limiting base plate. The limiting side plates are provided with limiting grooves for accommodating the shaft of the torque shaft. The limiting base plate is provided with bolt holes, and the limiting base plate is connected to the support blocks by bolts. The connecting structure includes a vertical connecting plate that is wider at the top and narrower at the bottom and a horizontal connecting plate that are integrally formed. A shaft hole is provided near the lower end of the connection. The hole passes through the outermost end structure of the torsion shaft. Bolt holes are evenly provided around the hole. Bolts pass through the holes to fix the connecting plate and the torsion shaft. The torque shaft test loading bracket is fixed with bolts and nuts and fitted into the corresponding rim mounting bolts of the wheel hub; Torque bearing deformation test is divided into three different load conditions, including: No-load test: No load is applied to the torsion shaft test loading platform. The weight of the torsion shaft test loading platform and the two torsion shaft test loading supports is measured and recorded using an electronic scale. Full load test: Use a gantry crane to lift the load block with an electronic scale, record the weight of the load block, slowly lift the load block to the torsion shaft test loading platform, and slowly load it. During the loading process, ensure that the torsion shaft test loading platform is horizontal and observe the change in the electronic scale reading. The decrease in the electronic scale reading indicates the load that has been applied. Impact load test: Continue to load slowly. When the loaded load and the weight of the pre-measured torsion shaft test loading platform and the two torsion shaft test loading brackets are twice the torsion shaft load, stabilize the gantry crane and hold it. After the torsion shaft and electronic scale readings no longer change, record the loaded weight and measure the values ​​of H and L. Here, H represents the vertical distance between the tire mounting center and the top plane of the frame, and L represents the horizontal distance between the center of the torsion shaft tube and the tire mounting center.

2. The torsion bearing deformation testing device as described in claim 1, characterized in that, One end of the support block is fixed to the wide border of the rectangular upper frame, and the other end is fixed to the column by a support rod.

3. The torsion bearing deformation testing device as described in claim 1, characterized in that, The limiting side plate also has several holes.

4. The torsion bearing deformation testing device as described in claim 1, characterized in that, The support plate includes: a rectangular frame structure, a rectangular plate in the middle of the frame structure, the length of the rectangular plate being less than the length of the rectangular frame structure, and a grooved plate directly provided between the rectangular plate and the wide side of the rectangular frame structure; the grooved plate has bolt holes for fixing the grooved plate to the transverse connecting plate at the upper end of the connecting plate.

5. The torsion bearing deformation testing device as described in claim 4, characterized in that, The grooved plate includes a base plate and side plates disposed on both sides of the base plate, the side plates on both sides together with the base plate forming a groove.

6. The torsion bearing deformation testing device as described in claim 1, characterized in that, Using a torque sensor installed on the torsion shaft, the torsional force is measured in real time. When the loaded load and the weight of the torsion shaft test loading platform and the two torsion shaft test loading supports, which are measured in advance, are equal to the torsion shaft load, the gantry crane is stabilized and held. After the readings of the torsion shaft and the electronic scale no longer change, the loaded weight is measured and recorded by the displacement sensor, and the values ​​of H and L are measured.

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