Method and equipment for detecting strength of tank overturning protection device and medium

Abstract

The invention relates to a method and equipment for detecting the strength of a tank overturning protection device and a medium, and relates to the field of automobile passive safety tests.The method for detecting the strength of the tank overturning protection device comprises the following steps that S1, three-dimensional models of a tank, the overturning protection device and a testing device are constructed, s2, performing finite element analysis on the tank body model, the overturning protection device model and the test device model, and enabling the test device model to apply a load with an inclination angle to the overturning protection device model to obtain a stress cloud picture and a deformation cloud picture; s3, modifying the inclination angle of the load to obtain a corresponding stress cloud picture and a deformation cloud picture under each inclination angle condition; and S4, comparing the stress nephograms and the deformation nephograms under various inclination angle conditions, determining distribution positions of strain gauges based on the stress nephograms, and taking the inclination angle when the stress is maximum and the deformation degree is maximum as a loading angle. According to the invention, the strength of the overturning protection device can be detected.

Description

Technical Field

[0001] The present application relates to the field of automobile passive safety testing, and in particular to a method, equipment and medium for testing the strength of a tank rollover protection device. Background Art

[0002] In recent years, tank vehicle accidents have occurred frequently, which has aroused widespread social concern. When an accident occurs, the safety accessories and loading and unloading accessories on the top of the tank are easily damaged by impact, which in turn leads to leakage of dangerous goods and serious harm. Therefore, when the accessories on the top of the tank are designed to protrude from the tank, a rollover protection device will be provided to protect the accessories on the top of the tank from damage when the vehicle overturns in an accident, avoiding the occurrence of secondary harm.

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

[0004] There is little research in this field in China, and there is no corresponding standard test method. As a result, in the mandatory inspection report of motor vehicle safe operation, the industry has avoided the embodiment of "the rollover protection device of tank-type dangerous goods transport vehicles should be set to withstand the 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 and 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 object of the present application is to provide a method, equipment and medium for detecting a tank rollover protection device, which can detect the static strength of the rollover protection device on the top of a metal tank body to ensure that the strength of the rollover protection device can meet the regulatory requirements and be able to withstand an inertia force equivalent to twice the total mass of the vehicle.

[0006] In the first aspect, the present application provides a method for detecting the strength of a tank rollover protection device using the following technical solution:

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

[0008] 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;

[0009] 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;

[0010] S3, modifying the inclination angle of the load to obtain the corresponding stress cloud map and deformation cloud map under various inclination angle conditions;

[0011] 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;

[0012] S5. Perform actual strength testing on the rollover protection device according to the obtained point positions and loading angles.

[0013] Further, the S4 includes:

[0014] S41, determining an initial value range of the tilt angle, and selecting N tilt angles of different sizes from the initial value range;

[0015] S42, obtaining corresponding stress cloud maps and deformation cloud maps under various tilt angle conditions;

[0016] 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;

[0017] S44, repeat the above steps until the value range cannot be narrowed any further;

[0018] S45, taking the inclination angle with the maximum stress and the maximum deformation within the value range as the loading angle.

[0019] Furthermore, 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.

[0020] Furthermore, 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.

[0021] Furthermore, the tank body is fixed to the iron floor by a fixing fixture, the fixing fixture comprises bolts and a steel frame, and the steel frame is detachably connected to the iron floor by the bolts;

[0022] 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.

[0023] Furthermore, the rollover protection device also includes a plurality of protection parts arranged on the tank body, and one end of the test device is vertically rotated upward / downward to be pressed on any one of the protection parts.

[0024] Further, the S5 includes:

[0025] S51. Arrange strain gauges on the tank body and the rollover protection device based on the stress cloud diagram corresponding to the loading angle;

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

[0027] S53, obtaining a stress curve and a strain curve based on the strain gauge;

[0028] S54, based on the test device, obtaining a load magnitude and a displacement curve of the rollover protection device;

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

[0030] Furthermore, after step S5, the sealing performance of the tank body is tested by injecting water into the tank body.

[0031] In a second aspect, the present application provides an electronic device, comprising 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 a tank body and a rollover protection device, and the memory stores a computer program. When the processor executes the computer program, it implements the detection method described in any one of claims 1 to 8.

[0032] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the above-mentioned detection method is implemented.

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

[0034] 1. The initial value range of the tilt angle in this application is determined based on the rollover accident of the actual tank truck. By adopting various rollover situations of the tank body, the initial value range of the tilt angle is set to 20 to 60 degrees. Finite element analysis is performed 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. The tilt angle in this situation is used as the loading angle to perform strength testing on the rollover protection device. The rollover protection device that meets the strength requirements can cope with various rollover situations and provide better protection for the tank body.

[0035] 2. When performing strength testing, the present application causes the pressure plate to be pressed onto one of the protective parts of the tank body. Through this form of pressing, the protective part is subjected to stress and deformed, and can be better compared with other protective parts that are not pressed, so as to more intuitively understand the stress size and deformation.

[0036] 3. When the test device applies load, it is concentrated on one protection part, so that the stress on the tank body is more concentrated. Compared with the conventional tank overturning condition, the load form applied in this application can simulate a more severe overturning condition, and the detection of the overturning protection device is more stringent. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the process of the detection method in this application;

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

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

[0040] Figure 4 It is a three-dimensional structural schematic diagram of another form of the tank model, the rollover protection device model and the test device model in the present application;

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

[0042] Figure 6 It is the stress cloud diagram when the tilt angle is 25° in this application;

[0043] Figure 7 It is the deformation cloud diagram when the tilt angle is 25° in this application;

[0044] Figure 8 It is the stress cloud diagram when the tilt angle is 45° in this application;

[0045] Fig. 9 It is the deformation cloud diagram when the tilt angle is 45° in this application;

[0046] Fig.10 It is a specific flow chart of step S5 in this application;

[0047] Fig.11 It is a side view of another form of the tank body and the rollover protection device in the present application;

[0048] In the figure, 1. overturning protection device; 2. tank body; 3. test device; 4. fixing tool; 41. bolt; 42. steel frame; 5. support. DETAILED DESCRIPTION

[0049] The following will be combined with the attached Figure 1-11 The technical solution of the present application is described clearly and completely. The following embodiments are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application. In the following description, the same symbols 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 terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] It should be further understood that the term “and / or” used in the specification and corresponding claims of this application refers to any and all possible combinations of one or more of the listed items.

[0053] A method for testing the strength of a tank overturn protection device, referring to Figure 1 , including the following steps:

[0054] 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;

[0055] 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;

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

[0057] Specifically, refer to Figure 2and Figure 3 The tank body is fixed to the iron floor by a fixing fixture, the fixing fixture includes bolts and a steel frame, and the steel frame is detachably connected to the iron floor by bolts;

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

[0059] When performing finite element analysis on the model, the test device will apply a load to the rollover 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 cloud map and the deformation cloud map can be obtained more intuitively and quickly.

[0060] Furthermore, the rollover protection device is configured in the form of a reinforcement ring or a protective top cover, a transverse or longitudinal member, etc. The selection of the rollover protection device is specifically configured according to the situation. In a specific embodiment, the specific structure of the rollover protection device is as follows: Figure 2 As shown, it includes multiple protection parts (preferably 3) arranged on the tank body to protect the upper part of the tank body. When the test device model applies load to the overturning protection device model, the test device model can be made to contact with multiple protection parts at the same time to obtain a stress cloud map and a deformation cloud map.

[0061] Reference Figure 4 In another specific embodiment, one end of the test device can be rotated vertically upward / downward (in this embodiment, one end of the test device is raised 5 degrees) so that the test device can be pressed on any protective part, and the stress cloud map and deformation cloud map can also be obtained.

[0062] Through this form of compression, the protection part is subjected to stress and deformed, which can be better compared with other protection parts that are not compressed, so that the stress size and deformation can be understood more intuitively. At the same time, when the test device applies the load, it is concentrated on one protection part, so that the stress on the overturning protection device is more concentrated. Compared with the conventional tank overturning condition, the load form applied in this application can simulate a more severe overturning condition, and the detection of the overturning protection device is more stringent.

[0063] It should be noted that, in this embodiment, the tilt angle is specifically as follows: Figure 2 As shown, when the overturning device applies load to the tank body and the rollover protection device, it will translate toward the tank body. During this process, the tilt angle does not change, and the upward / downward rotation of one end of the test device does not cause any conflict with the tilt angle.

[0064] When the rollover protection is selected in the form of a enclosure, there is no requirement for the test device to rotate vertically upward / downward.

[0065] S3, modifying the inclination angle of the load to obtain the corresponding stress cloud map and deformation cloud map under various inclination angle conditions;

[0066] 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;

[0067] When the tank body rolls over, the rollover angle of the tank body is usually about 20° (i.e., the tank body forms a 20° angle with the ground after falling). However, in actual situations, the tank body may roll over more seriously, and the tank body may be subjected to greater stress and correspondingly more serious deformation.

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

[0069] Finite element analysis is performed within this value range to find out the situation where the tank body is subjected to maximum stress and the corresponding maximum deformation when the tank body rolls over. The inclination angle in this situation is used as the loading angle to perform strength testing on the rollover protection device.

[0070] If the rollover protection device passes the strength test, when the rollover protection device tilts at any angle between 20 and 60 degrees, the rollover protection device can provide better protection for the tank body, thereby effectively avoiding the situation where the tank body is still damaged when it overturns after the rollover protection device has passed the existing strength test.

[0071] Reference Figure 5 , S4 specifically includes:

[0072] S41, determining an initial value range of the tilt angle, and selecting N tilt angles of different sizes from the initial value range;

[0073] S42, obtaining corresponding stress cloud maps and deformation cloud maps under various tilt angle conditions;

[0074] 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;

[0075] S44, repeat the above steps until the value range cannot be narrowed any further;

[0076] S45, taking the inclination angle with the maximum stress and the maximum deformation within the value range as the loading angle.

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

[0078] Furthermore, N is set to 6, and 6 cases of 40 degrees, 42 degrees, 44 degrees, 46 degrees, 48 ​​degrees and 50 degrees are selected for simulation, and the corresponding stress cloud maps and deformation cloud maps of these 6 cases are obtained. It is found that the stress and deformation degrees are relatively maximum when the inclination angles are 44 degrees and 46 degrees. At this time, the reduced value range is 44 to 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 simulation, so as to speed up the rate of finding the loading angle.

[0080] At this time, the reduced value range only includes 45 degrees except for the two end point values, and it can no longer be reduced. In this case, the three cases of 44 degrees, 45 degrees, and 46 degrees are simulated to obtain the corresponding stress cloud diagrams and deformation cloud diagrams for these three cases, 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 tilt angle is 25 degrees, the stress magnitude and deformation degree of the tank model and the rollover protection device model are as follows: Figure 6 , Figure 7 As shown; when the tilt angle is 45 degrees, the stress magnitude and deformation degree of the tank model and the rollover protection device model are as follows: Figure 7 , Figure 8 shown.

[0082] After the above analysis, it can be concluded that when the tilt angle is between 20 and 45 degrees, as the tilt angle increases, the stress and deformation of the tank body also increase accordingly. At 45 degrees, the stress and deformation of the tank body are the largest, which is the worst rollover situation. When the tilt angle is between 45 and 60 degrees, as the tilt angle increases, the stress and deformation of the tank body begin to decrease.

[0083] S5. Perform actual strength testing on the rollover protection device according to the obtained point positions and loading angles.

[0084] Before conducting the actual strength test, the iron floor and steel frame are first manufactured according to the drawings, and then assembled together with bolts.

[0085] Correspondingly, 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, and setting an outer facade between the steel frame and the iron floor.

[0086] By selecting shear-resistant high-strength bolts, increasing the contact area 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 that the tank is firmly fixed and that the fixed support points (bolts) do not deform during the test.

[0087] Further, refer to Fig.10 , S5 specifically includes:

[0088] S51. Arrange strain gauges on the tank body and the rollover protection device based on the stress cloud diagram corresponding to the loading angle;

[0089] In a specific embodiment, the measuring points are marked with a marker pen, and the marking points are polished with a grinder, and the polishing direction is at a 45-degree angle to the strain gauge. It should be noted that in actual operation, if the deformation direction of some marking points is uncertain, a 45 / 90 strain gauge rosette can also be pasted.

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

[0091] S53, obtaining a stress curve and a strain curve based on the strain gauge;

[0092] S54, based on the test device, obtaining a load magnitude and a displacement curve of the rollover protection device;

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

[0094] After step S5, the sealing of the tank body is tested by injecting water into the tank body to test whether the tank body is well sealed, so as to further determine whether the strength of the rollover protection device meets the standard.

[0095] Furthermore, in order to better implement the above-mentioned detection method, the present application provides an electronic device, including a testing device, a memory and a processor. The testing device is used to apply the required force to the tank body and the rollover protection device. A computer program is stored in the memory. When the processor executes the computer program, the above-mentioned detection method is implemented.

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

[0097] The processor may include one or more processing cores. The processor executes or runs instructions, programs, code sets or instruction sets stored in the memory, calls data stored in the memory, performs various functions of the present application and processes data.

[0098] The processor may be at least one of a special purpose 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 is understandable that for different devices, the electronic device used to implement the above processor function may also be other, and the embodiments of the present application are not specifically limited.

[0099] Furthermore, in a specific embodiment, the test device is configured as a special working dynamometer, which mainly includes a pressure plate, a motor stand, a pressure sensor, a displacement sensor, a control system (a memory and a processor are disposed in the control system), an iron floor and a fixed tooling.

[0100] The loading height of the pressure plate is 1500-2600mm. The pressure plate is driven by a computer-controlled motor. The loading force range is 0 to 1000kN. The left and right movement adjustment distance of the loading pressure plate is 800mm, and the front and rear movement adjustment distance is 300mm. 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 15mm / s, the longitudinal inclination angle of the pressure plate is -5° or +5° (corresponding to 5 degrees of upward movement of one end of the pressure plate), and the lateral inclination angle of the pressure plate is 25°

[0101] It should be noted that, refer to Fig.11 In the prior art, when a passenger car is subjected to a top pressure test, the lateral inclination angle of the pressure plate is fixed at 25° (the angle of the dedicated working dynamometer is not adjustable), while the present application continues to use the pressure plate, and on this basis, a support is provided on the bottom side of the tank body to tilt the tank body by 20°, thereby simulating the situation where the tank body is tilted by 45°.

[0102] This embodiment does not specifically limit the specific form of the test device. For example, the existing test equipment for constant pressure testing of passenger cars can be used. The test equipment can also be customized based on further optimization of the test method to ensure that the test requirements are met.

[0103] Furthermore, according to the national standard GB 18564.1-2019 "Road Transport of Liquid Dangerous Goods Tank Vehicles Part 1: Technical Requirements for Metal Atmospheric Pressure Tanks", the highest point of the safety accessories and loading and unloading accessories on the top of the tank should be at least 20mm lower than the highest point of the device. The device should be able to withstand the inertial force of twice the total mass of the vehicle multiplied by the gravitational acceleration. Set the corresponding load and loading time on the control system of the special working dynamometer and start the test.

[0104] After the test, record the loading time, load size, deformation and other parameters displayed on the test bench computer. Read the strain curve measured by the strain gauge on the computer, and the data acquisition device

[0105] After converting it into a stress curve, the curve is analyzed to determine whether the strength of the rollover protection device meets the standards.

[0106] In addition, the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned detection method is implemented.

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

[0108] The implementation principle of the embodiment of the present application is:

[0109] Through simulation, the stress and deformation cloud diagram corresponding to the tank rollover protection device under the pressure twice the total mass of the tank truck is obtained, and the points where strain gauges need to be arranged in the rollover protection device area and the load loading angle are obtained.

[0110] Next, a field test was conducted. Strain gauges were arranged according to the results of finite element analysis, and a pressure twice the total mass of the tanker was applied to measure the actual load displacement curve and stress strain curve of the rollover protection device. This was used as the structural strength test result of the rollover protection device under the preset loading conditions, filling the gap in the field of strength testing of tank rollover protection devices in China.

[0111] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in 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.

2. A method for detecting the strength of a tank overturn 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: 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.

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

9. 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 8 is implemented.

10. 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 8 is implemented.

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