A detection method, device and medium for the strength of a tank body overturning protection device

Abstract

The present application relates to a method, device and medium for detecting the strength of a tank body overturn protection device, and relates to the field of automotive passive safety testing. The method for detecting the strength of the tank body overturn protection device includes the following steps: S1. Construct a three-dimensional model of the tank body, the overturn protection device and the test device; S2. Perform finite element analysis on the tank body model, the overturn protection device model and the test device model, so that the test device model applies a load with an inclination angle to the overturn protection device model to obtain a stress nephogram and a deformation nephogram; S3. Modify the inclination angle of the load to obtain the corresponding stress nephogram and deformation nephogram under each inclination angle condition; S4. Compare the stress nephograms and deformation nephograms under each inclination angle condition, and based on the stress nephogram, determine the layout positions of the strain gauges, and use the inclination angle at which the stress is the maximum and the deformation degree is the maximum as the loading angle. The present application can detect the strength of the overturn protection device.

Description

Technical Field

[0001] The present application relates to the field of automotive passive safety testing, and particularly to a method, device, and medium for detecting the strength of a tank body overturn protection device. Background Technique

[0002] In recent years, accidents of tank vehicles have occurred frequently, attracting wide social attention. During an accident, safety accessories and loading and unloading accessories at the top of the tank body are easily damaged by impact, which may lead to leakage of dangerous goods and cause serious harm. Therefore, when designing the accessories at the top of the tank body to protrude from the tank body, an overturn protection device is provided to ensure that the accessories at the top of the tank are not damaged when the vehicle overturns in an accident and to avoid the occurrence of secondary hazards.

[0003] The strength of the overturn protection device is crucial, and relevant domestic standards have also made clear requirements: in GB 18564.1-2019 "Road Transport Tank Vehicles for Liquid Dangerous Goods - Part 1: Technical Requirements for Metallic Atmospheric Tanks" and GB 7258-2017 "Motor Vehicle Running Safety Technical Conditions", it is required that the overturn protection device should be able to withstand an inertial force of 2 times the total mass of the vehicle multiplied by the acceleration of gravity.

[0004] In this field, there is little research in China and no corresponding standard test method. As a result, in the mandatory item inspection report for the safe operation of motor vehicles, the industry has avoided reflecting that "the overturn protection device of a tank-type dangerous goods transport vehicle should be set to withstand an inertial force of 2 times the total mass of the vehicle multiplied by the acceleration of gravity". Therefore, it is necessary to carry out relevant research to seek a scientific, reasonable, convenient, effective, accurate, and reliable inspection method to fill the gap in the industry and avoid potential risks. Summary of the Invention

[0005] The invention objective of the present application is to provide a method, device, and medium for detecting the strength of a tank body overturn protection device. For the overturn protection device at the top of a metallic tank body, it can detect the static strength of the overturn protection device to ensure that the strength of the overturn protection device can meet the regulatory requirement of being able to withstand an inertial force equivalent to twice the total mass of the vehicle.

[0006] In the first aspect, a method for detecting the strength of a tank body overturn protection device provided by the present application adopts the following technical solution:

[0007] A method for detecting the strength of a tank body overturn protection device includes the following steps:

[0008] S1. Construct a three-dimensional model of the tank body, the overturn protection device, and the test device, and assemble the constructed tank body model, overturn protection device model, and test device model together;

[0009] S2. Perform finite element analysis on the tank body model, the overturn protection device model, and the test device model, so that the test device model applies a load with an inclination angle to the overturn protection device model, and obtain the stress nephogram and the deformation nephogram;

[0010] S3. Modify the inclination angle of the load, and obtain the corresponding stress nephogram and deformation nephogram under each inclination angle condition;

[0011] S4. Compare the stress nephograms and deformation nephograms under each inclination angle condition. Based on the stress nephogram, determine the layout positions of the strain gauges, and take the inclination angle when the stress is the largest and the deformation degree is the largest as the loading angle;

[0012] S5. Perform actual strength detection on the overturn protection device according to the obtained layout positions and loading angle.

[0013] Further, the S4 includes:

[0014] S41. Determine the initial value range of the inclination angle, and select N different-sized inclination angles from the initial value range;

[0015] S42. Obtain the corresponding stress nephograms and deformation nephograms under each inclination angle condition;

[0016] S43. Arrange the two inclination angles with the largest stress and the largest deformation degree in order of size, and use them as the two endpoints of the new value range to narrow the value range of the inclination angle;

[0017] S44. Repeat the above steps until the value range can no longer be narrowed;

[0018] S45. Take the inclination angle with the largest stress and the largest deformation degree within this value range as the loading angle.

[0019] Further, the initial value range of the inclination angle is determined based on the rollover accidents of actual tank trucks, and the initial value range of the inclination angle is set to 20 - 60 degrees.

[0020] Further, the models of the tank body, the overturn protection device, and the test device are constructed based on the actual tank body drawing dimensions, and the test device model is simplified to a plate shape.

[0021] Further, the tank body is fixed to the iron floor through a fixing tooling. The fixing tooling includes bolts and a steel frame, and the steel frame is detachably connected to the iron floor through the bolts;

[0022] The detection method further includes strengthening operations. The strengthening operations include the selection of bolts, increasing the contact surface between the steel frame and the bottom of the tank body, and setting an outer facade between the steel frame and the iron floor.

[0023] Further, the overturning protection device further includes a plurality of protection parts arranged on the tank body, and one end of the test device rotates vertically upward / downward and presses on any one of the protection parts.

[0024] Further, the S5 includes:

[0025] S51. Based on the stress nephogram corresponding to the loading angle, strain gauges are arranged on the tank body and the overturning protection device;

[0026] S52. Adjust the position of the test device so that the test device applies a load with a loading angle to the tank body;

[0027] S53. Based on the strain gauges, obtain the stress curve and the strain curve;

[0028] S54. Based on the test device, obtain the load magnitude and the displacement curve of the overturning protection device;

[0029] S55. Determine whether the overturning protection device meets the requirements.

[0030] Further, after step S5, the tightness of the tank body is detected by filling the tank body with water.

[0031] In a second aspect, an electronic device provided in the present application includes a test device, a memory, a processor, and a data acquisition device. The data acquisition device is used to collect the magnitudes of stress and strain. The test device is used to apply a load to the tank body and the overturning protection device. A computer program is stored on the memory. When the processor executes the computer program, the above detection method is implemented.

[0032] In a third aspect, a computer-readable storage medium provided in the present application has a computer program stored thereon. When the computer program is executed by a processor, the above detection method is implemented.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. In the present application, the initial value range of the inclination angle is determined based on the rollover accidents of actual tank trucks. By adopting various rollover situations of the tank body, the initial value range of the inclination angle is set to 20-60 degrees. And finite element analysis is carried out within this value range to find out the situation where the tank body is subjected to the maximum stress and the corresponding maximum deformation when the tank body rolls over, and the inclination angle in this situation is used as the loading angle to detect the strength of the overturning protection device. So that the overturning protection device that meets the strength requirements can cope with various rollover situations and provide good protection for the tank body.

[0035] 2. When performing strength detection in this application, the pressure plate is pressed against one of the protective parts of the tank body. Through this pressing form, the protective part is stressed and deformed, enabling better comparison with other non-pressed protective parts and more intuitively understanding the stress magnitude and deformation situation.

[0036] 3. When the test device applies a load, it focuses on one protective part, making the stress on the tank body more concentrated. Compared with the conventional tank body overturning situation, the load application form in this application can simulate a more severe overturning situation and detect the overturning protection device more strictly. Description of the Drawings

[0037] Figure 1 is a schematic flow chart of the detection method in this application;

[0038] Figure 2 is a side view of the tank body and the overturning protection device in this application;

[0039] Figure 3 is a three-dimensional structure schematic diagram of the tank body model, the overturning protection device model, and the test device model in this application;

[0040] Figure 4 is a three-dimensional structure schematic diagram of another form of the tank body model, the overturning protection device model, and the test device model in this application;

[0041] Figure 5 is a specific flow schematic diagram of step S4 in this application;

[0042] Figure 6 is a stress nephogram when the inclination angle is 25° in this application;

[0043] Figure 7 is a deformation nephogram when the inclination angle is 25° in this application;

[0044] Figure 8 is a stress nephogram when the inclination angle is 45° in this application;

[0045] Figure 9 is a deformation nephogram when the inclination angle is 45° in this application;

[0046] Figure 10 is a specific flow schematic diagram of step S5 in this application;

[0047] Figure 11 is a side view of another form of the tank body and the overturning protection device in this application;

[0048] In the figure, 1. Overturning protection device; 2. Tank body; 3. Test device; 4. Fixing tooling; 41. Bolt; 42. Steel frame; 5. Support member. Detailed implementation mode

[0049] The following will combine the attached Figures 1-11 The technical solution of the present application will be clearly and completely described. The following embodiments are exemplary and are only used to explain the present application, and cannot be construed as a limitation to the present application. In the following description, the same reference numerals are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0050] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0051] In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] It should also be further understood that the term "and / or" used in the present application refers to any combination of one or more of the listed items and all possible combinations.

[0053] A method for detecting the strength of a tank body overturning protection device, referring to Figure 1 , includes the following steps:

[0054] S1. Construct three-dimensional models of the tank body, the overturning protection device, and the test device, and assemble the constructed tank body model, overturning protection device model, and test device model together;

[0055] S2. Perform finite element analysis on the tank body model, the overturning protection device model, and the test device model, so that the test device model applies a load with an inclination angle to the overturning protection device model, and obtain a stress nephogram and a deformation nephogram;

[0056] In a specific embodiment, the models of the tank body, the overturning protection device, and the test device are all constructed based on the drawing dimensions. Among them, in order to facilitate stress analysis, the test device model is simplified to a plate shape;

[0057] Specifically, referring to Figure 2 andFigure 3 The tank body is fixed to the iron floor through a fixing tooling. The fixing tooling includes bolts and a steel frame, and the steel frame is detachably connected to the iron floor through bolts;

[0058] During assembly, first, the overturning protection device model is assembled onto the tank body model, and then the test device model is set above the overturning protection device model.

[0059] When performing finite element analysis on the model, the test device applies a load to the overturning protection device. In a specific embodiment, the test device includes a pressure plate for applying the load. By simplifying the test device model, the stress nephogram and deformation nephogram can be obtained more intuitively and quickly.

[0060] Further, the overturning protection device is set in the form of a reinforcing ring or a protective top cover, transverse or longitudinal members, etc. The selection of the overturning protection device is specifically set according to the situation. In a specific embodiment, the specific structure of the overturning protection device is as Figure 2 shown, including a plurality of protection parts (preferably 3) provided on the tank body to protect the upper part of the tank body. When the test device model applies a load to the overturning protection device model, the test device model can be in contact with a plurality of protection parts at the same time to obtain the stress nephogram and deformation nephogram.

[0061] Referring to Figure 4 , in another specific embodiment, one end of the test device can also be rotated vertically upward / downward (in this embodiment, one end of the test device is raised by 5 degrees), and the test device is pressed on any one of the protection parts, and the stress nephogram and deformation nephogram can also be obtained.

[0062] Through this pressing form, the protection part is stressed and deformed, which can be better compared with other non-pressed protection parts to more intuitively understand the stress magnitude and deformation situation. At the same time, when the test device applies a load, it is concentrated on one protection part, making the stress on the overturning protection device more concentrated. Compared with the conventional tank overturning situation, the load form applied in this application can simulate a more severe overturning situation and detect the overturning protection device more strictly.

[0063] It should be noted that in this embodiment, the inclination angle is specifically as Figure 2 shown. When the pressing device applies a load to the tank body and the overturning protection device, it will translate towards the tank body, and the inclination angle does not change during this process. The upward / downward rotation of one end of the test device does not conflict with the inclination angle.

[0064] When the overturning protection is selected in the form of a skirt board, there is no requirement for the vertical upward / downward rotation of the test device at this time.

[0065] S3. Modify the tilt angle of the load to obtain the corresponding stress nephogram and deformation nephogram under various tilt angle conditions;

[0066] S4. Compare the stress nephograms and deformation nephograms under various tilt angle conditions. Based on the stress nephogram, determine the layout positions of the strain gauges, and take the tilt angle when the stress is the maximum and the deformation degree is the maximum as the loading angle;

[0067] When the tank body overturns, the overturning angle of the tank body is usually about 20° (that is, the included angle formed between the fallen tank body and the ground is 20°). However, in actual situations, the tank body may undergo more severe overturning. At this time, the tank body may be subjected to greater stress and correspondingly more severe deformation will occur.

[0068] Based on this, the initial value range of the tilt angle in this application is determined based on the actual overturning situation of the tank body. By adopting various overturning situations of the tank body, the initial value range of the tilt angle is set to 20 - 60 degrees.

[0069] Perform finite element analysis within this value range to find out the situation where the tank body is subjected to the maximum stress and corresponding maximum deformation when the tank body overturns, and take the tilt angle in this situation as the loading angle to conduct strength detection on the overturning protection device.

[0070] If the overturning protection device passes the strength detection, when the overturning protection device tilts at any angle between 20° and 60°, the overturning protection device can provide good protection for the tank body at this time, thus effectively avoiding the situation where the tank body is still damaged during overturning after the overturning protection device passes the existing strength detection.

[0071] Refer to Figure 5 , S4 specifically includes:

[0072] S41. Determine the initial value range of the tilt angle, and select N tilt angles with different magnitudes from the initial value range;

[0073] S42. Obtain the corresponding stress nephograms and deformation nephograms under various tilt angle conditions;

[0074] S43. Arrange the two tilt angles with the maximum stress and the maximum deformation degree in ascending order as the two endpoints of the new value range, and narrow down the value range of the tilt angle;

[0075] S44. Repeat the above steps until the value range can no longer be narrowed down;

[0076] S45. Take the tilt angle with the maximum stress and the maximum deformation degree within this value range as the loading angle.

[0077] In a specific embodiment, N is set to 5, and five cases of 20 degrees, 30 degrees, 40 degrees, 50 degrees, and 60 degrees are selected for simulation. The corresponding stress nephograms and deformation nephograms for these five cases are obtained, and it is found that the stress and deformation degrees are relatively the largest when the inclination angles are 40 degrees and 50 degrees. At this time, the reduced value range is 40 - 50 degrees.

[0078] Further, N is set to 6, and six cases of 40 degrees, 42 degrees, 44 degrees, 46 degrees, 48 degrees, and 50 degrees are selected for simulation. The corresponding stress nephograms and deformation nephograms for these six cases are obtained, and it is found that the stress and deformation degrees are relatively the largest when the inclination angles are 44 degrees and 46 degrees. At this time, the reduced value range is 44 - 46 degrees.

[0079] It should be noted that the two cases of 40 degrees and 50 degrees do not need to be re - simulated after the simulation has been carried out, so as to accelerate the rate of finding the loading angle.

[0080] At this time, within the reduced value range, except for the two endpoint values, only 45 degrees is included, and it is no longer possible to further reduce it. In this case, three cases of 44 degrees, 45 degrees, and 46 degrees are simulated. The corresponding stress nephograms and deformation nephograms for these three cases are obtained, and it is found that the stress and deformation degrees are the largest when the inclination angle is 45 degrees. That is, 45 degrees is selected as the loading angle.

[0081] Among them, when the inclination angle is 25 degrees, the stress magnitudes and deformation degrees of the tank body model and the anti - overturning protection device model are successively as Figure 6 、 Figure 7 shown; when the inclination angle is 45 degrees, the stress magnitudes and deformation degrees of the tank body model and the anti - overturning protection device model are successively as Figure 7 、 Figure 8 shown.

[0082] Based on the above analysis, it can be concluded that when the inclination angle is between 20 - 45 degrees, as the inclination angle increases, the stress and deformation of the tank body also increase correspondingly. At 45 degrees, the stress and deformation of the tank body are the largest, that is, the most severe roll - over situation. When the inclination angle is between 45 - 60 degrees, as the inclination angle increases, the stress and deformation of the tank body begin to decrease.

[0083] S5. According to the obtained layout positions and loading angles, conduct actual strength detection on the anti - overturning protection device.

[0084] Before conducting the actual strength detection, first manufacture the iron floor and steel frame according to the drawings, and then assemble the iron floor and the steel frame together through bolts.

[0085] Correspondingly, the detection method further includes strengthening operations, which include the selection of bolts, increasing the contact surface between the steel frame and the bottom of the tank, and setting an outer facade between the steel frame and the iron floor.

[0086] After selecting shear-resistant high-strength bolts, increasing the contact surface between the steel frame and the bottom of the tank, and setting an outer facade between the steel frame and the iron floor, the shear force on the bolts can be further reduced to ensure the firm fixation of the tank and guarantee that the fixed support points (bolt positions) do not deform during the test process.

[0087] Further, referring to Figure 10 , S5 specifically includes:

[0088] S51. Based on the stress nephogram corresponding to the loading angle, strain gauges are arranged on the tank body and the overturn protection device;

[0089] In a specific embodiment, the measurement points are marked with a marker pen, and the marked points are polished with a grinder. Pay attention to the grinding direction being at a 45-degree angle to the strain gauge during grinding. It should be noted that in actual operation, if the deformation direction of some marked points is uncertain, 45 / 90 type strain rosettes can also be pasted.

[0090] S52. Adjust the position of the test device so that the test device applies a load with a loading angle to the tank body;

[0091] S53. Based on the strain gauges, obtain the stress curve and the strain curve;

[0092] S54. Based on the test device, obtain the load magnitude and the displacement curve of the overturn protection device;

[0093] S55. Determine whether the overturn protection device meets the requirements.

[0094] After step S5, the tightness of the tank is detected by filling the tank with water to check whether the tank is well sealed, so as to further determine whether the strength of the overturn protection device meets the standard.

[0095] Further, in order to better execute the above detection method, an electronic device provided in this application includes a test device, a memory, and a processor. The test device is used to apply the required force to the tank body and the overturn protection device. A computer program is stored on the memory. When the processor executes the computer program, the above detection method is implemented.

[0096] The memory may include a program storage area and a data storage area. The program storage area can store instructions for implementing the above detection method, and the data storage area can store the data involved in the above detection method.

[0097] The processor may include one or more processing cores. By running or executing instructions, programs, code sets, or instruction sets stored in the memory, the processor invokes the data stored in the memory to perform various functions of this application and process the data.

[0098] The processor may be at least one of an application-specific integrated circuit, a digital signal processor, a digital signal processing device, a programmable logic device, a field programmable gate array, a central processing unit, a controller, a microcontroller, and a microprocessor. It can be understood that for different devices, the electronic devices for implementing the above-mentioned processor functions may also be others, and the embodiments of this application do not make specific limitations.

[0099] Further, in a specific embodiment, the test device is set as a dedicated working force measuring machine, which mainly includes a pressure plate, a motor bench, a pressure sensor, a displacement sensor, a control system (the memory and the processor are arranged in the control system), an iron floor, and a fixing tooling.

[0100] The loading height of the pressure plate is 1500 - 2600 mm. The pressure plate is driven by a motor controlled by a computer, the loading force range is 0 to 1000 kN, the left-right movement adjustment distance of the loading pressure plate is 800 mm, and the front-back movement adjustment distance is 300 mm. The control accuracy of the device force measurement is 1% FS, and the control accuracy of the displacement measurement is 1% FS. The test loading speed is 10 to 15 mm / s, the longitudinal inclination angle of the pressure plate is -5° or +5° (corresponding to one end of the pressure plate rising 5 degrees), and the transverse inclination angle of the pressure plate is 25°.

[0101] It should be noted that referring to Figure 11 , in the prior art, when performing a top pressure test on a passenger car, the transverse inclination angle of the pressure plate is fixed at 25° (the angle of the dedicated working force measuring machine is not adjustable), while in this application, the pressure plate is continued to be used, and on this basis, a support member is arranged on the bottom side of the tank body to incline the tank body by 20°, and the situation where the tank body is inclined by 45° is simulated.

[0102] The specific form of the test device in this embodiment is not specifically limited. For example, the test equipment for performing a constant pressure test on a passenger car existing can be borrowed, or it can be further optimized based on the test method to customize the test equipment to ensure that the test requirements are met.

[0103] Further, according to the national standard GB 18564.1-2019 "Road Transport Tank Vehicles for Liquid Hazardous Goods - Part 1: Technical Requirements for Metallic Atmospheric Tanks", the highest points of the safety accessories and loading and unloading accessories on the top of the tank body should be at least 20 mm lower than the highest point of this device. This device should be able to withstand the inertial force of 2 times the total mass of the vehicle multiplied by the acceleration of gravity. Set the corresponding load and loading time on the control system of the dedicated working force measuring machine and start the test.

[0104] After the test, record the parameters such as the loading duration, load magnitude, and deformation measured on the test bench computer. Read the strain curve measured by the strain gauge on the computer, and the data collector

[0105] After converting it into a stress curve, analyze the curve to determine whether the strength of the overturning protection device meets the standard.

[0106] In addition, a computer-readable storage medium provided by the present application stores a computer program thereon. When the computer program is executed by a processor, the above detection method is implemented.

[0107] The computer-readable storage medium is specifically set according to actual needs. For example, it includes: USB flash drive, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disc.

[0108] The implementation principle of the embodiments of the present application is as follows:

[0109] Through simulation, obtain the stress and deformation nephograms of the tank body overturning protection device under the pressure twice the total mass of the tank truck, and obtain the positions of the strain gauges to be arranged in the overturning protection device area and the load loading angle.

[0110] Next, conduct a field test. Arrange strain gauges according to the finite element analysis results, and apply a pressure twice the total mass of the tank truck, so as to measure the actual load displacement curve and stress-strain curve of the overturning protection device, which are used as the structural strength detection results of the overturning protection device under the preset loading conditions, filling the gap in the field of strength detection of the tank body overturning protection device in China.

[0111] The embodiments of the present specific implementation manner are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A method for detecting the strength of a tank overturn protection device, characterized in that: The following steps are involved: S1. Construct three-dimensional models of the tank body, the rollover protection device and the test device, and assemble the constructed tank body model, the rollover protection device model and the test device model together; S2. Perform finite element analysis on the tank model, the rollover protection device model and the test device model, so that the test device model applies a load with an inclined angle to the rollover protection device model to obtain a stress cloud map and a deformation cloud map; S3, modifying the inclination angle of the load to obtain the corresponding stress cloud map and deformation cloud map under various inclination angle conditions; S4. Compare the stress nephogram and the deformation nephogram under various tilt angle conditions, determine the distribution position of the strain gauge based on the stress nephogram, and take the tilt angle at which the stress and deformation are the largest as the loading angle; S5. Perform actual strength testing on the rollover protection device according to the obtained point positions and loading angles; The S5 includes: S51. Arrange strain gauges on the tank body and the rollover protection device based on the stress cloud diagram corresponding to the loading angle; S52, adjusting the position of the test device so that the test device applies a load with a loading angle to the tank body; S53, obtaining a stress curve and a strain curve based on the strain gauge; S54, based on the test device, obtaining a load magnitude and a displacement curve of the rollover protection device; S55. Determine whether the rollover protection device meets the requirements.

2. A method for detecting the strength of a tank rollover protection device according to claim 1, characterized in that: The S4 includes: S41, determining an initial value range of the tilt angle, and selecting N tilt angles of different sizes from the initial value range; S42, obtaining corresponding stress cloud maps and deformation cloud maps under various tilt angle conditions; S43, arranging the two tilt angles with the largest stress and the largest deformation degree in order of magnitude, and using them as the two end points of the new value range, thereby narrowing the value range of the tilt angle; S44, repeat the above steps until the value range cannot be narrowed any further; S45, taking the inclination angle with the maximum stress and the maximum deformation within the value range as the loading angle.

3. A method for detecting the strength of a tank overturn protection device according to claim 2, characterized in that: The initial value range of the tilt angle is determined based on an actual tank truck rollover accident, and the initial value range of the tilt angle is set to 20 to 60 degrees.

4. A method for detecting the strength of a tank rollover protection device according to claim 1, characterized in that: The models of the tank body, the rollover protection device and the test device are constructed based on the actual tank body drawing dimensions, and the test device model is simplified into a plate shape.

5. A method for detecting the strength of a tank overturn protection device according to claim 4, characterized in that: The tank body is fixed to the iron floor by a fixing tool, wherein the fixing tool comprises bolts and a steel frame, and the steel frame is detachably connected to the iron floor by the bolts; The detection method also includes strengthening operations, which include selecting bolts, increasing the contact surface between the steel frame and the bottom of the tank body, and setting an outer facade between the steel frame and the iron floor.

6. A method for detecting the strength of a tank overturn protection device according to claim 4, characterized in that: The rollover protection device comprises a plurality of protection parts arranged on the tank body, and one end of the test device rotates vertically upward / downward to be pressed on any one of the protection parts.

7. A method for detecting the strength of a tank rollover protection device according to claim 1, characterized in that: After step S5, the sealing property of the tank body is tested by injecting water into the tank body.

8. An electronic device, characterized in that: The invention comprises a test device, a memory, a processor and a data acquisition device, wherein the data acquisition device is used to collect stress and strain magnitudes, the test device is used to apply loads to the tank body and the rollover protection device, the memory stores a computer program, and when the processor executes the computer program, the detection method according to any one of claims 1 to 7 is implemented.

9. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the detection method according to any one of claims 1 to 7 is implemented.

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