Torsion force bearing load deformation test device and torsion force bearing load deformation test method

Abstract

The invention provides a torsion shaft load deformation test device and method. The torsion shaft load deformation test device comprises a torsion shaft test mounting platform, a torsion shaft test loading bracket and a torsion shaft test loading platform, the torsion shaft test mounting platform is of a frame structure, and the frame structure is used for placing a torsion shaft to be subjected to a bearing deformation test; the torsion shaft testing and loading support comprises two supporting plates of the same structure, the two supporting plates are installed below the torsion shaft testing and loading platform respectively, the distance between the two supporting plates is consistent with the length of a horizontally-placed torsion shaft to be tested, and the two supporting plates are used for clamping the torsion shaft to be tested located on the torsion shaft testing and loading platform. The torsion shaft test loading support provides torsion torque for a torsion shaft to be tested. The torsion shaft test loading platform comprises a supporting plate which is used for bearing the gravity of the gravity block and evenly distributing the gravity at the two ends of the torsion shaft.

Description

Technical Field

[0001] The invention belongs to the technical field of torsion bearing load deformation testing, and in particular relates to a torsion bearing load deformation testing device and method. Background Art

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

[0003] In order to fully understand the working performance of the torsion shaft, optimize the design and predict its performance in practical applications, a torsion shaft load deformation test is carried out to evaluate the deformation behavior and mechanical properties of the torsion shaft when subjected to torsional loads, including evaluating the load-bearing capacity of the torsion shaft, understanding the deformation characteristics of the torsion shaft, and predicting the service life of the torsion shaft.

[0004] However, most of the current load-bearing deformation test experiments have complex structures, high professional difficulty in operation, high equipment costs, large amounts of data generated during the test, and complex data processing and analysis are required to draw conclusions. This method can only meet the needs of some large-scale enterprises, but it is not an ideal cost-effective choice for most enterprises. Therefore, a new test scheme that meets the needs of most enterprises is needed to quickly test the load-bearing deformation of the torsion shaft. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a torsion shaft load deformation test device, which can test the relative relationship between the torsion shaft tire mounting center and the shaft mounting bracket under the action of no load, full load and impact load, so as to prepare for selecting the axle during the design process and designing and verifying the technical status of the whole vehicle.

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

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

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

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

[0010] The torsion shaft test loading bracket includes two connection structures of the same structure, 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 horizontally placed to-be-tested torsion shaft, and is used to clamp the torsion shaft to-be-tested located on the torsion shaft test mounting platform. 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, which is used to bear the gravity of the gravity block and evenly distribute it to both ends of the torsion shaft.

[0012] As a further technical solution, the frame structure includes: a rectangular bottom frame and a rectangular upper frame, the area of ​​the rectangular bottom frame is larger than the area of ​​the rectangular upper frame, and cross-arranged support rods are provided between the diagonals in the rectangular upper frame;

[0013] The rectangular bottom frame is provided with a first support rod and a second support rod respectively near two wide positions, and the first support rod and the second support rod are parallel to the rectangular bottom frame as a wide frame;

[0014] The intersections of the first support rod, the second support rod and the long frame of the rectangular bottom frame are respectively provided with upright posts; the diagonals of the structure surrounded by the first support rod, the second support rod and the long frame of the rectangular bottom frame are provided with cross-arranged support rods;

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

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

[0017] As a further technical solution, a limiting structure is provided on the support block, and the limiting structure includes 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, and the limiting grooves are used to accommodate the shaft of the torque shaft. The limiting bottom plate is provided with bolt holes, and the limiting bottom plate and the support block are connected by bolts.

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

[0019] As a further technical solution, the connecting structure includes a vertical connecting plate and a horizontal connecting plate which are integrally formed, the plates are wide at the top and narrow at the bottom, and an axial hole is opened near the lower end of the connection. The hole passes through the outermost end structure of the torsion shaft, and bolt holes are evenly opened around the hole. Bolts pass through the holes to fix the connecting plate to the torsion shaft.

[0020] As a further technical solution, the support plate includes: 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 groove plate is directly arranged between the rectangular plate and the rectangular frame structure as a wide border; the groove plate is provided with bolt holes for fixing the groove plate to the transverse connecting plate at the upper end of the connecting plate.

[0021] As a further technical solution, the groove plate includes 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 a groove.

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

[0023] In the second aspect, a method for testing the load deformation of a torsion bearing is disclosed, which is divided into three working conditions with different loads, including:

[0024] No-load test: No load is applied to the torsion axis test loading platform. An electronic scale is used to measure the weight of the torsion axis test loading platform and the two torsion axis test loading brackets and record them;

[0025] Full load test: Use a crane to lift the loaded gravity block through an electronic scale, record the weight of the loaded gravity block, slowly lift the loaded gravity block to the torsion axis test loading platform, and slowly load it. During the loading process, ensure that the torsion axis test loading platform is level, observe the changes in the electronic scale reading, and the decrease in the electronic scale reading indicates that the load has been loaded;

[0026] Impact load test: continue to load slowly. When the loaded load and the weight of the torque axis test loading platform and the two torque axis test loading brackets measured in advance are twice the torque axis load, stabilize the crane and maintain it. After the torque axis and electronic scale readings no longer change, record the loaded weight and measure the values ​​of H and L.

[0027] As a further technical solution, a torque sensor installed on the torsion shaft is used to measure the torsion 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 brackets measured in advance are the torsion shaft load, the crane is stabilized and maintained. After the readings of the torsion shaft and the electronic scale no longer change, the displacement sensor is used to measure, record the loaded weight and measure the values ​​of H and L.

[0028] One or more of the above technical solutions have the following beneficial effects:

[0029] The technical solution of the present invention mainly uses a torsion shaft test installation platform, a torsion shaft test loading bracket and a 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 achieve functions. For example, the driving requirements only need to be able to lift load equipment such as gravity blocks and install electronic scales.

[0030] The technical solution of the present invention adopts the modular principle in design, so that each part can be replaced or upgraded independently, reducing maintenance costs and complexity. For example, the driving 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 users can quickly master the use of the equipment.

[0031] The technical solution of the present invention can work stably under different environmental conditions, and has lower environmental requirements than other similar test equipment, effectively reducing the additional costs caused by environmental factors. The use of various types of high-precision sensors can accurately measure the required data, effectively avoiding errors caused by factors such as manual measurement.

[0032] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 This is a schematic structural diagram of a test device for testing the load deformation of a torsion bearing according to an embodiment of the present invention;

[0035] Figure 2 This is an overall schematic diagram of a torsion shaft according to an embodiment of the present invention;

[0036] Figure 3 This is a partially enlarged overall schematic diagram of a torsion shaft of an example embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of a torsion shaft test installation platform for an example embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of a torsion shaft test loading platform and a bracket for implementing an example of the present invention;

[0039] Figure 6 This is a schematic diagram of a driving example according to an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of loading a gravity block for an example implementation of the present invention;

[0041] Figure 8 This is a flow chart of a load deformation test of a torsion bearing according to an embodiment of the present invention;

[0042] Fig. 9 This is a schematic diagram of parameters related to the example test process of the embodiment of the present invention;

[0043] Fig.10This is a schematic diagram of a test record of a torsion bearing load deformation in an example embodiment of the present invention;

[0044] Fig.11 This is a partial enlarged view of the torsion shaft test installation platform of the embodiment of the present invention;

[0045] Fig.12 This is a partial enlarged view of a loading bracket for a torsion shaft test according to an embodiment of the present invention;

[0046] Fig.13 This is a partial enlarged view of the torsion shaft test loading platform of an example embodiment of the present invention;

[0047] In the figure, 1- overhead crane; 2- hanging electronic scale; 3- loading gravity block; 4- torque axis test loading platform; 5- torque axis test loading bracket; 6- torque axis; 7- torque axis test installation platform. DETAILED DESCRIPTION

[0048] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

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

[0050] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0051] Embodiment 1

[0052] See attached Figure 1 As shown, this embodiment discloses a torsion bearing load deformation test device, comprising:

[0053] Torsion shaft test mounting platform, torsion shaft test loading bracket and 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 subjected to the load deformation test;

[0055] The torsion shaft test loading bracket includes two connection structures of the same structure, 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 horizontally placed to-be-tested torsion shaft, and is used to clamp the torsion shaft to-be-tested on the torsion shaft test mounting platform. The torsion shaft test loading bracket provides a torsional torque to the torsion shaft to-be-tested;

[0056] The torsion shaft test loading platform includes a support plate for bearing the gravity of the gravity block and distributing it evenly at both ends of the torsion shaft.

[0057] See attached Figure 4 As shown, the frame structure includes: a rectangular bottom frame and a rectangular upper frame, the area of ​​the rectangular bottom frame is larger than the area of ​​the rectangular upper frame, and cross-arranged support rods are provided between the diagonals in the rectangular upper frame;

[0058] A first support rod and a second support rod are respectively arranged near two wide positions of the rectangular bottom frame, and the first support rod and the second support rod are parallel to the rectangular bottom frame as a wide frame;

[0059] The intersections of the first support rod, the second support rod and the long frame of the rectangular bottom frame are respectively provided with upright posts; the diagonals of the structure surrounded by the first support rod, the second support rod and the long frame of the rectangular bottom frame are provided with cross-arranged support rods;

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

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

[0062] See attached Fig.12 As shown, a limiting structure is provided on the support block, and the limiting structure includes 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, and 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 by bolts.

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

[0064] See attached Fig.12 As shown, the connection structure includes a vertical connection plate and a horizontal connection plate that are integrally formed, which are wide at the top and narrow at the bottom. An axial hole is opened near the lower end of the connection, and the hole passes through the outermost end structure of the torsion shaft. Bolt holes are evenly opened around the hole, and bolts pass through the holes to fix the connection plate to the torsion shaft.

[0065] See attached Figure 5 As shown, the support plate includes: a rectangular frame structure, a rectangular plate is arranged in the middle of the frame structure, and the length of the rectangular plate is smaller than the length of the rectangular frame structure.

[0066] See attached Fig.13 As shown, the rectangular plate and the rectangular frame structure are directly provided with a groove plate as a wide frame; the groove plate is provided with bolt holes for fixing the groove plate with the transverse 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 together with the bottom plate form a groove.

[0068] Wing plates are also respectively arranged between the vertical connecting plates and the horizontal connecting plates.

[0069] In this embodiment, the torsion shaft test installation platform is a metal frame structure, and the frame joints are welded and checked to be able to withstand the entire test load.

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

[0071] Torsion axis test loading platform: The material of the platform needs to meet the requirements of stiffness, strength and hardness, and its ability must be able to withstand the loads brought by various specifications of gravity blocks without deformation.

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

[0073] The advantages are reflected in the following two aspects:

[0074] Force aspect:

[0075] The frame support structure can effectively resist horizontal loads 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 transfer the force to various parts of the frame, so that the entire structure is subjected to force together, thereby reducing the force on a single component and improving the safety of the structure. In the frame support structure, the frame and support share the vertical and horizontal loads. The frame mainly bears the vertical load, while the support mainly bears the horizontal load. This division of labor allows the internal force to be more reasonably distributed to each component, avoiding excessive force on some components and causing damage.

[0076] Material saving:

[0077] Since the frame support structure can effectively resist horizontal loads, the cross-sectional size of frame columns and beams can be reduced. At the same time, reducing the size of components can also reduce the deadweight of the structure and reduce the cost of the foundation.

[0078] Torsion shaft test loading bracket:

[0079] It bears all the loading load and transmits it to the torsion shaft, requiring it to have sufficient rigidity and strength during the experiment to ensure that it will not deform during the experiment.

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

[0081] High-strength steel brackets have higher load-bearing capacity and rigidity, and can be designed with more optimized structural forms to reduce the amount of materials used. Lighter weight can also reduce transportation and installation costs.

[0082] Torque shaft test loading platform:

[0083] It is used to bear the loading load such as gravity block and transfer the load evenly to the loading brackets on 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] The high-rigidity loading platform can maintain small deformation when bearing load, which can effectively reduce the impact of external vibration and interference on the test experiment.

[0087] See attached Figure 1 As shown, the torsion shaft test installation platform is placed on a horizontal ground and ensures fixed installation. The torsion shaft installation bracket is reliably fixed on the torsion shaft test installation platform through a bolt and nut group. The torsion shaft test loading bracket is reliably fixed with bolts and nuts and is set in the wheel rim mounting bolts corresponding to the wheel hub. The torsion shaft test loading platform is reliably fixed on the torsion shaft test loading bracket through a high-strength bolt and nut group. Adjust the level of the torsion shaft test loading bracket. When adjusting: Place a level meter at the torsion shaft test loading platform to ensure that the brackets on both sides of the torsion shaft test loading platform are evenly stressed.

[0088] Due to the incompatibility of the installation method of the torque shaft with the existing test device and other reasons, the size of the connection part does not match and cannot be applied. In this embodiment, see the attached Figure 2 , 3 As shown, the torsion shaft adopts a hollow torsion shaft tube. Four rubber rods are cooled and shrunk by liquid nitrogen and then placed in it. After it returns to room temperature, it expands and fills the entire torsion shaft tube to achieve an interference fit. The rubber torsion shaft has the advantages of no restrictions on structural shape, large elastic deformation, large damping, ability to withstand multi-directional loads at the same time, and convenient installation and disassembly. Combined with the characteristics of the rubber torsion shaft, using it as the experimental object of this experiment can enable this experiment to obtain sufficient experimental data, so as to more accurately test the feasibility of this experimental method. After verification, this test method is feasible. The torsion shaft adopts a high-performance rubber torsion axle, which is used in various types of RVs, trailers, etc., to test the torsional deformation under different load conditions such as no load, full load, and impact load.

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

[0090] The torsion shaft test installation platform in this embodiment is shown in the attached Figure 3 As shown, it has the function of bearing and ensuring the horizontal placement of the torsion shaft. When in use, place it on a clean and flat factory floor, use a level to level the torsion shaft test installation platform, especially the plane where the torsion shaft is installed, and ensure that the installation platform is fixed.

[0091] See attached Figure 4 , 5 As shown, the torsion shaft test loading bracket installs the loading device such as the gravity block on the loading platform. The loading platform bears the gravity and transmits the force to both sides of the torsion shaft through the mounting bracket to provide torsional torque to the torsion shaft. When in use, it is inserted into the rim mounting bolts corresponding to the wheel hub and securely fixed with nuts. The torsion shaft test loading platform is used to bear the gravity of the gravity block and distribute it evenly at both ends of the torsion shaft. When in use, it is securely fixed on the torsion shaft test loading bracket and the level of the torsion shaft test loading bracket is adjusted.

[0092] See attached Figure 6 As shown, the crane is used to lift and move the weight block, and to test the actual load at a certain time through measuring tools such as electronic scales. When using it, the crane position should be fixed, and the electronic scale, weight block and other instruments should be fixed securely, and the electronic scale and other testing instruments should be calibrated.

[0093] See attached Figure 7 As shown, the gravity block 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. The weight of the gravity block should be confirmed in advance when using it.

[0094] In order to ensure the accuracy of the measurement data, this device is equipped with various sensors and other auxiliary measurement equipment, such as: torque sensor, which uses a torque flange sensor and is installed at the connection between the torsion shaft and the mounting bracket to measure the torsion force in real time; the 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. Measure the displacement and deformation of the torsion shaft when it is subjected to force; strain gauge, directly install and bond the strain gauge on the surface of the measured torsion shaft through appropriate industrial adhesives. Utilize the conductivity characteristics to directly measure the stress and fatigue force of the attached material, which is used to measure the tiny strain on the torsion shaft and can be used for fine mechanical performance analysis; environmental sensor, the environmental sensor uses a temperature and humidity sensor, which is installed on the torsion shaft test installation platform. Measure and record key parameters such as temperature and humidity in the experimental environment.

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

[0096] The sensors used in the sub-technical solution of this embodiment are all wireless transmission, such as WiFi, Bluetooth transmission, etc., which can effectively avoid wiring difficulties and other problems. The sensor is integrated with a microprocessor, which can perform preliminary processing on the collected data locally, such as filtering, amplification, digitization, etc. After receiving the data through the background human-machine interface, the engineer analyzes the data and then optimizes the design in the next step.

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

[0098] After the torsion shaft to be tested is installed and fixed, the initial data of the torsion shaft is measured and recorded. The driving crane slowly places the gravity block on the loading platform for loading. The loading platform transfers the load applied by the gravity block to the torsion shaft through the mounting brackets on both sides, thereby causing the torsion shaft to deform.

[0099] Embodiment 2

[0100] See attached Figure 8 As shown, this embodiment discloses a method for testing the load deformation of a torsion bearing, comprising:

[0101] During the test, the load-bearing weight, bracket status, and initial angle of the torsion shaft must be confirmed in advance and recorded in the corresponding position in the "Torsion Shaft Load Deformation Test Record Form".

[0102] By recording the load-bearing weight, bracket status, and initial angle of the torsion shaft and comparing them with the later test data, the deformation of the torsion shaft after different loading methods can be determined.

[0103] Before the test begins, fix the sensor on a stable bracket or base, for example, the environmental sensor is fixed on the torsion shaft test mounting bracket. Connect all necessary sensors. Before the experiment begins, check whether the sensor is firmly fixed and calibrated. Ensure that the sensor does not move or vibrate during the measurement process. Ensure that the data acquisition unit is correctly connected to the sensor and the computer system. When installing the sensor, carefully measure and evaluate the rationality of the installation position to avoid data deviation as much as possible. Minimize the gap with the torsion shaft as much as possible to ensure effective measurement. When installing the sensor, consider environmental factors such as temperature, humidity, vibration, etc., and take protective measures such as adding protective covers and shock absorbers when necessary. The measurement direction of the sensor should be aligned with the movement direction of the torsion shaft to be measured, and the displacement sensor should be aligned with the movement and deformation direction of the torsion shaft to avoid angular errors. Set the appropriate sampling frequency according to the speed of change of the measured object to ensure the continuity and accuracy of the data.

[0104] For relevant parameters of the test process and the torque bearing load deformation test record table, please refer to the attached Fig. 9 and 10 shown.

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

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

[0107] This test is mainly for displacement calculation. The data obtained during the test are 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 working conditions with different loads:

[0109] No-load test: No load is applied to the torsion axis test loading platform. Use an electronic scale to measure the weight of the torsion axis test loading platform and the two torsion axis test loading brackets and record them. Measure the values ​​of H and L through the sensor and enter them into the value cells on the left and right sides of the no-load table of the corresponding axis.

[0110] Full load test: Use a crane to lift the loaded gravity block through an electronic scale, record the weight of the loaded gravity block, slowly lift the loaded gravity block to the torsion axis test loading platform, and slowly load it. During the loading process, ensure that the torsion axis test loading platform is level, observe the changes in the electronic scale reading, and a decrease in the electronic scale reading indicates that the load has been loaded.

[0111] The torsional force is measured in real time by the torque sensor. When the loaded load and the weight of the torsion axis test loading platform and the two torsion axis test loading brackets measured in advance are the torsion axis load, the crane is stabilized and maintained for 10 seconds. After the readings of the torsion axis and the electronic scale no longer change, the displacement sensor is used to measure, record the loaded weight and measure the values ​​of H and L, and enter them into the numerical cells on the left and right sides of the full load table of the corresponding axis respectively. The data obtained from the experiment is compared with the expected design for the next step of optimization.

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

[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 of the torsion shaft under test is 3500 pounds, the total weight of the gravity block, test platform and test bracket should be equivalent to the maximum load 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 brackets measured in advance are twice the torsion shaft load, stabilize the crane and hold for 10 seconds. After the torsion shaft and the electronic scale readings no longer change, record the loaded weight and measure the values ​​of H and L, and enter them into the numerical cells on the left and right sides of the table of the impact load of the corresponding axis. According to the H and L data obtained from the specific test, compare them with the expected design, so as to optimize the next step. The purpose of this test is to be almost equivalent to the limit position when the torsion shaft is subjected to impact load. At this time, the measured H and L values ​​can be regarded as the position when the torsion shaft is subjected to impact load, so as to carry out further verification, design and optimization.

[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 the impact load, and fully consider the possible unexpected impact conditions. The use of higher simulated loads can help discover potential design weaknesses and risks and provide a 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 has been thoroughly quantitatively analyzed 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 verified analysis results, a comprehensive technical evaluation of the current design solution is carried out.

[0118] The three experiments represent three different load conditions, namely no load, full load, and impact load.

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

[0120] The evaluation process should be systematic enough to identify potential weaknesses and room for improvement in the design. On this basis, a series of targeted optimization strategies and improvement measures are formulated to improve the overall performance of the design and ensure that it meets the established technical standards and performance indicators, thereby achieving the optimization of the design and the improvement of its functions.

[0121] Specifically, the performance of the torsion shaft during the test is evaluated, such as whether the various data of the tested torsion shaft meet the standards, whether the deformation is within the design requirements, and whether the safety of the torsion shaft meets the standards.

[0122] This experimental method can be used to test the relative relationship between the torsion shaft tire mounting center and the shaft mounting bracket under no-load, full-load and impact load conditions after multiple tests, so as to help other companies select axles and design and verify the technical status of the entire vehicle during the design process.

[0123] The data of the relative relationship between the torsion axle tire mounting center and the axle mounting bracket is shown under different loads. Fig. 9 The changes of each value in .

[0124] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A torque bearing load deformation test device, characterized in that: include: Torsion shaft test mounting platform, torsion shaft test loading bracket and torsion shaft test loading platform; The torsion shaft test installation platform is a frame structure, and the frame structure is used to place the torsion shaft to be subjected to the load deformation test; The torsion shaft test loading bracket includes two connection structures of the same structure, 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 horizontally placed to-be-tested torsion shaft, and is used to clamp the torsion shaft to-be-tested located on the torsion shaft test mounting platform. The torsion shaft test loading bracket provides a torsional torque to the torsion shaft to-be-tested; The torsion shaft test loading platform comprises a support plate, which is used to bear the gravity of the gravity block and evenly distribute it to both ends of the torsion shaft.

2. A torque bearing load deformation test device as claimed in claim 1, characterized in that: The frame structure comprises: a rectangular bottom frame and a rectangular upper frame, the area of ​​the rectangular bottom frame is larger than the area of ​​the rectangular upper frame, and cross-arranged support rods are arranged between the diagonals in the rectangular upper frame; The rectangular bottom frame is provided with a first support rod and a second support rod respectively near two wide positions, and the first support rod and the second support rod are parallel to the rectangular bottom frame as a wide frame; The intersections of the first support rod, the second support rod and the long frame of the rectangular bottom frame are respectively provided with upright posts; the diagonals of the structure surrounded by the first support rod, the second support rod and the long frame of the rectangular bottom frame are provided with cross-arranged support rods; The rectangular bottom frame and the rectangular upper frame are supported by a plurality of columns, the plurality of columns form four surfaces, and each surface is provided with a plurality of support rods.

3. A torque bearing load deformation test device as claimed in claim 1, characterized in that: The rectangular upper frame is provided with support blocks as the wide frame, one end of the support block is fixed to the wide frame of the rectangular upper frame, and the other end is fixed to the column through a support rod.

4. A torque bearing load deformation test device as claimed in claim 1, characterized in that: A limiting structure is arranged on the support block, and the limiting structure includes 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, and 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 is connected to the support block by bolts.

5. A torque bearing load deformation test device as claimed in claim 1, characterized in that: The limiting side plate is also provided with a plurality of holes.

6. A torque bearing load deformation test device as claimed in claim 1, characterized in that: The connection structure includes a vertical connection plate and a horizontal connection plate which are integrally formed and are wide at the top and narrow at the bottom. An axial 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 connection plate to the torsion shaft. Preferably, wing plates are respectively arranged between the vertical connecting plates and the horizontal connecting plates.

7. A torque bearing load deformation test device as claimed in claim 1, characterized in that: The support plate includes: 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 groove plate is directly arranged between the rectangular plate and the rectangular frame structure as a wide border; the groove plate is provided with bolt holes for fixing the groove plate to the transverse connecting plate at the upper end of the connecting plate.

8. A torque bearing load deformation test device as claimed in claim 1, characterized in that: 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 a groove.

9. A method for testing the load deformation of a torsion bearing, characterized in that: It is divided into three different load cases, including: No-load test: No load is applied to the torsion axis test loading platform. An electronic scale is used to measure the weight of the torsion axis test loading platform and the two torsion axis test loading brackets and record them; Full load test: Use a crane to lift the loaded gravity block through an electronic scale, record the weight of the loaded gravity block, slowly lift the loaded gravity block to the torsion axis test loading platform, and slowly load it. During the loading process, ensure that the torsion axis test loading platform is level, observe the changes in the electronic scale reading, and the decrease in the electronic scale reading indicates that the load has been loaded; Impact load test: continue to load slowly. When the loaded load and the weight of the torque axis test loading platform and the two torque axis test loading brackets measured in advance are twice the torque axis load, stabilize the crane and maintain it. After the torque axis and electronic scale readings no longer change, record the loaded weight and measure the values ​​of H and L.

10. A method for testing the load deformation of a torsion bearing as claimed in claim 9, characterized in that: Use the torque sensor installed on the torsion shaft to measure the torsion 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 brackets measured in advance are the torsion shaft load, stabilize the crane and maintain it. After the readings of the torsion shaft and the electronic scale no longer change, measure with the displacement sensor, record the loaded weight and measure the values ​​of H and L.

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