Container strength test system

Abstract

The invention provides a container strength test system. The container strength test system comprises a test bed and a load applying assembly. The test bed comprises supporting parts, and the two supporting parts are oppositely arranged at intervals in the left-right direction and / or the front-back direction and used for supporting a bottom frame of the container and are connected and locked with bottom corner pieces of the container. The load applying assembly comprises an electromagnet which is arranged opposite to the container. The at least one load applying assembly is located between the opposite supporting parts, and the load applying assembly is used for loading a test load to the bottom of the container. The at least one load applying assembly is located on the side portion of the container and used for loading a test load to the side portion of the container. The at least one load applying assembly is mounted to the end of the container and used for loading a test load to the end of the container. The test accuracy and reliability of the scheme are high.

Description

Technical Field

[0001] The present application relates to the technical field of container test simulation, and more specifically to a container strength test system. Background Art

[0002] In the existing container manufacturing process, it is necessary to test sample boxes or batch boxes to verify whether they meet the rated test conditions. Among them, in the stacking, ceiling, bottom and fork lifting test items, weights need to be loaded on the container floor to simulate the stress conditions of the container under load conditions. The commonly used weights weigh about 2 tons. For a container with a total weight of 30 tons, it is necessary to carry out multiple weights and stack them in the box during the preparation stage before the test. In addition, before conducting the end wall and side wall strength test, the air bags need to be installed on the inside of the container wall to apply the load; so whether it is loading weights or installing air bags, it takes a lot of time and manpower, resulting in a long test cycle and affecting production efficiency.

[0003] Therefore, it is necessary to provide a container strength testing system to at least partially solve the above problems. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, the present application provides a container strength testing system, comprising:

[0006] A test bench, the test bench comprising a support portion, two of the support portions being arranged opposite to each other and spaced apart in a left-right direction, and / or two of the support portions being arranged opposite to each other and spaced apart in a front-back direction, the support portion being used to support an underframe of a container and being connected and locked to a bottom corner piece of the container;

[0007] A load applying assembly, the load applying assembly comprising an electromagnet, the electromagnet being arranged opposite to the container;

[0008] Wherein, at least one of the load applying assemblies is located between the opposite support portions, and the load applying assembly is used to apply a test load to the bottom of the container;

[0009] At least one of the load applying assemblies is located on a side of the container, and the load applying assembly is used to apply a test load to the side of the container;

[0010] At least one of the load applying assemblies is located at an end of the container, and the load applying assembly is used to apply a test load to the end of the container.

[0011] According to the container strength test system of the present application, the electromagnet can accurately control the force and position of the load, thereby improving the accuracy and reliability of the test. By performing load tests with the electromagnet, there is no need to carry weights or install air bags multiple times, which greatly shortens the test cycle and improves production efficiency.

[0012] Optionally, the container strength testing system further comprises a bracket, wherein the bracket is opposite to the side and the end of the container, and the electromagnet is fixedly connected to the test bench and the bracket.

[0013] Optionally, different magnetic forces are generated by adjusting the intensity of the current flowing through the electromagnet to apply a target load to the container;

[0014] The electromagnet is spaced apart from the container.

[0015] Optionally, the load applied by the electromagnet to the container is:

[0016] F=(μ0*N 2 *I 2 *A) / (2*g 2 );

[0017] Where μ0 is the magnetic permeability in vacuum;

[0018] N is the number of turns of the coil of the electromagnet;

[0019] I is the current passing through the coil, A;

[0020] A is the cross-sectional area of ​​the coil, m 2 ;

[0021] G is the distance between the electromagnet and the container, m.

[0022] Optionally, the load applying assembly further comprises a tension gauge, one or more tension gauges are connected to the side of the electromagnet facing away from the container, the tension gauges are connected between the electromagnet and the test bench, or the tension gauges are connected between the electromagnet and the bracket.

[0023] Optionally, the load applied by the electromagnet to the container is:

[0024] F = ∑ F1;

[0025] Wherein, F1 is the reading of a single dynamometer.

[0026] Optionally, the load applying assembly further comprises an oil cylinder, one or more oil cylinders are connected to a side of the electromagnet facing away from the container, the oil cylinders are connected between the electromagnet and the test bench, or the oil cylinders are connected between the electromagnet and the bracket;

[0027] The electromagnet is in contact with or spaced from the container.

[0028] Optionally, the load applied by the electromagnet to the container is:

[0029] F = N*P*S+G;

[0030] Where N is the number of oil cylinders;

[0031] S is the cross-sectional area of ​​the cylinder end surface, m 2 ;

[0032] P is the reading of the oil cylinder;

[0033] G is the weight of the electromagnet, kg.

[0034] Optionally, the container is made of magnetic material, or a magnetic plate is provided on the inner wall of the container opposite to the electromagnet.

[0035] Optionally, the ratio of the cross-sectional area of ​​the electromagnet to the cross-sectional area of ​​the wall of the container opposite to the electromagnet is 0.9-1. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings of the embodiments of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the principles of the present application. In the drawings,

[0037] Figure 1 This is a front view schematic diagram of a container strength testing system and a container according to a first embodiment of the present application;

[0038] Figure 2 for Figure 1 Schematic diagram of the cross section taken along the midline AA;

[0039] Figure 3 This is a front view schematic diagram of a container strength testing system and a container according to a second embodiment of the present application;

[0040] Figure 4 for Figure 3 Schematic diagram of the cross section taken along the midline BB;

[0041] Figure 5 A front view schematic diagram of a container strength testing system and a container according to a third embodiment of the present application;

[0042] Figure 6 for Figure 5 Schematic diagram of the cross section taken along the center line CC;

[0043] Figure 7 for Figure 6 Schematic diagram of the cross section taken along the center line DD.

[0044] Description of Reference Numerals

[0045] 100: Container

[0046] 101: Bottom

[0047] 102: Side

[0048] 103: End

[0049] 110: Corner fittings

[0050] 120: Magnetic sheet

[0051] 200: Test bench

[0052] 210: Support

[0053] 300: Bracket

[0054] 400: Electromagnet

[0055] 500: Dynamometer

[0056] 600: Oil cylinder DETAILED DESCRIPTION

[0057] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0059] Herein, ordinal numbers such as “first” and “second” cited in the present application are merely identifications and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of the “second component”, and the term “second component” itself does not imply the existence of the “first component”.

[0060] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0061] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0062] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0063] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0064] The present application provides a container 100 strength test system, including a test bench 200 and a load application assembly. The test bench 200 includes a support portion 210, two support portions 210 are arranged oppositely and spaced in the left-right direction, and / or two support portions 210 are arranged oppositely and spaced in the front-back direction, the support portion 210 is used to support the bottom frame of the container 100, and the support portion 210 is fixedly connected to the bottom corner piece 110 of the container 100. The load application assembly is used to load a test load to the bottom 101 of the container 100, and the load application assembly includes an electromagnet 400, which is arranged opposite to the container 100. As a part of the load application assembly, the electromagnet 400 can accurately control the force and position of the load, thereby improving the accuracy and reliability of the test.

[0065] At least one load applying assembly is located between the opposing support portions 210 , and the load applying assembly is used to apply a test load to the bottom 101 of the container 100 .

[0066] At least one load applying assembly is located on the side 102 of the container 100, and the load applying assembly is used to apply a test load to the side 102 of the container 100. Optionally, the strength testing system for the container 100 further includes a bracket 300, the bracket 300 is opposite to the side 102 of the container 100, and the load applying assembly is mounted to the side 102 of the container 100 through the bracket 300.

[0067] At least one load applying assembly is located at the end 103 of the container 100, and the load applying assembly is used to apply a test load to the end 103 of the container 100. Optionally, the strength testing system for the container 100 further includes a bracket 300, the bracket 300 is opposite to the end 103 of the container 100, and the load applying assembly is mounted to the end 103 of the container 100 through the bracket 300.

[0068] During transportation and storage, the container 100 is subjected to forces from different directions, including pressure from the bottom 101, the side 102, and the end 103. Therefore, in order to ensure that the overall strength of the container 100 meets the requirements, loading tests need to be performed in all these directions. This solution provides multiple load application components, and these components can be located at the bottom 101, the side 102, and the end 103 of the container 100, so that various types of strength tests can be flexibly performed to meet different test requirements.

[0069] Optionally, the support portion 210 is a columnar structure, and the four support portions 210 correspond to the four bottom corner pieces 110 of the container 100, respectively, so as to ensure that the container 100 is subjected to uniform force during the test. The four support portions 210 are arranged at the same height. Optionally, a mounting hole or mounting surface matching the bottom corner piece 110 is reserved on the test bench 200. The bottom corner piece 110 and the support portion 210 are fixed by a fixing member. The fixing member can be, but is not limited to, a twist lock, a pin, etc.

[0070] Optionally, the test bench 200 and the bracket 300 are made of non-magnetic materials. By using non-magnetic materials, the test bench 200 and the bracket 300 are not affected by the magnetic field and the electromagnet 400 is not affected, thereby ensuring the accuracy and reliability of the test.

[0071] In the container 100 strength test system, the electromagnet 400 is the core part of the load application component, and the loading test of different parts of the container 100 is realized by precisely controlling its magnetic force. The electromagnet 400 is a device made using the magnetic effect of electric current. When electric current passes through a coil wound by a wire, a magnetic field is generated around it. The strength of the magnetic field is proportional to the magnitude of the current and also proportional to the number of turns of the coil. Therefore, by regulating the intensity of the current flowing through the electromagnet 400, the magnitude of the magnetic force it generates can be changed. Optionally, the magnitude of the current can be achieved by adjusting the power supply voltage, using an adjustable resistor or a current source, etc.

[0072] Reference Figure 1-Figure 2 In the first embodiment shown, the electromagnet 400 is fixedly connected to the test bench 200 and the bracket 300. The electromagnet 400 is spaced apart from the container 100.

[0073] In this solution, since the electromagnet 400 is fixed to the test bench 200 or the bracket 300, and the electromagnet 400 is spaced apart from the container 100, the attraction of the electromagnet 400 to the container 100 is different by changing the magnetic force of the electromagnet 400, and the pressure on the container 100 during transportation can be simulated, thereby applying loads of different sizes to the container 100. The actual force applied to the container 100 can be monitored according to the magnitude of the current to ensure the accuracy and reliability of the test.

[0074] The load applied by the electromagnet 400 to the container 100 is:

[0075] F=(μ0*N 2 *I 2 *A) / (2*g 2 );

[0076] Where μ0 is the magnetic permeability in vacuum;

[0077] N is the number of turns of the coil of the electromagnet 400;

[0078] I is the current passing through the coil, A;

[0079] A is the cross-sectional area of ​​the coil, m 2 ;

[0080] g is the distance between the electromagnet 400 and the container 100, m.

[0081] Reference Figure 3-Figure 4 In the second embodiment shown, the electromagnet 400 is fixedly connected to the test bench 200 or the bracket 300. The electromagnet 400 is spaced apart from the container 100.

[0082] The load application component also includes a dynamometer 500. In this solution, the dynamometer 500 cooperates with the electromagnet 400 to accurately measure the load applied by the electromagnet 400 to the container 100. Since the electromagnet 400 is fixedly connected to the test bench 200 or the bracket 300, and the electromagnet 400 is spaced apart from the container 100. By changing the magnetic force of the electromagnet 400, the attraction of the electromagnet 400 to the container 100 is different, and the pressure on the container 100 during transportation can be simulated, thereby achieving different loads on the container 100. Because the force is mutual, the magnetic force generated by the electromagnet 400 on the container 100 simultaneously generates an opposite force F1 on the dynamometer 500. The dynamometer 500 can display and record the magnitude of the tension F1 in real time, thereby ensuring the accuracy and reliability of the test data. In this solution, the magnitude of the magnetic force of the electromagnet 400 can be directly obtained through the reading of the dynamometer 500, without the need for magnetic force calculation.

[0083] Optionally, one or more tension gauges 500 are connected to the side of the electromagnet 400 facing away from the container 100, and the tension gauge 500 is connected between the electromagnet 400 and the test bench 200, or between the tension gauge 500 and the bracket 300. The connection between the tension gauge 500 and the electromagnet 400 and the test bench 200 or the bracket 300 is firm and reliable, and will not cause a large displacement, thereby preventing it from falling off or being damaged during the test.

[0084] It should be noted that, in this solution, the weight of the dynamometer 500 is negligible.

[0085] The load applied by the electromagnet 400 to the container 100 is:

[0086] F = ∑ F1;

[0087] Where F1 is the reading of a single dynamometer 500.

[0088] Reference Figure 5-Figure 7 In the third embodiment shown, the load applying assembly further includes a cylinder 600, one or more cylinders 600 are connected to the side of the electromagnet 400 facing away from the container 100, and the cylinder 600 is connected between the electromagnet 400 and the test bench 200, or the cylinder 600 is connected between the electromagnet 400 and the bracket 300. That is, the electromagnet 400 is mounted on the test bench 200 or the bracket 300 through the cylinder 600.

[0089] The electromagnet 400 is in contact with or spaced from the container 100. The electromagnet 400 generates magnetic force when it is energized, and the oil cylinder 600 pulls the electromagnet 400 away from the container 100 to overcome the magnetic force, and the container 100 is pulled away from the container body.

[0090] In this solution, the oil cylinder 600 is always perpendicular to the surface of the electromagnet 400. When testing the load on the bottom 101 of the container 100, the weight G of the electromagnet 400 is also affected in the vertical direction, so we need to correct the pulling force. When testing the load on the bottom 101 and the side 102 of the container 100, the weight of the electromagnet 400 is perpendicular to the pulling direction of the oil cylinder 600, so it will not affect the pulling force.

[0091] In this embodiment, since the electromagnet 400 is movably arranged, the bracket 300 is only provided with the bottom surface. When the oil cylinder 600 is provided in plurality, the oil cylinder 600 is evenly connected between the electromagnet 400 and the bracket 300. Optionally, the oil cylinder 600 is connected to the corner of the electromagnet 400 to ensure uniform force and stability of the electromagnet 400.

[0092] In this solution, when the oil cylinder 600 is located at the bottom 101 of the container 100, the angle between the oil cylinder 600 and the ground is 90°. When the oil cylinder 600 is located at the side of the container 100, the angle between the oil cylinder 600 and the ground is 0°.

[0093] The load applied by the electromagnet 400 to the container 100 is:

[0094] F = N*P*S+G*sinα;

[0095] Where, N is the number of oil cylinders 600;

[0096] S is the cross-sectional area of ​​the cylinder 600, m 2 ;

[0097] P is the reading of the oil cylinder 600;

[0098] G is the weight of electromagnet 400, kg;

[0099] α is the angle between the oil cylinder 600 and the ground.

[0100] For example, when the load application assembly provided by the present embodiment is used for testing. The container 100 is locked on the ground through the bottom corner piece 110, and the electromagnet 400 is moved upward to a certain distance or directly attached to the bottom 101 of the box body through the oil cylinder 600, and then the electromagnet 400 is powered on to obtain magnetic force, so that it generates magnetic force on the cross beam and steel floor of the bottom 101 of the container 100. Then, the oil cylinder 600 overcomes the magnetic force and pulls the electromagnet 400 downward. At this time, the floor of the container 100 is subjected to a downward pulling force. The required pressure of the oil cylinder 600 is read out according to the pressure gauge of the oil cylinder 600. The preset load is F. When the reading of the oil cylinder 600 reaches P=(FG) / (N*S), the load F received by the container 100 meets the test requirements. After the test is completed, the power supply of the electromagnet 400 is turned off, the magnetic force received by the floor disappears, and then the electromagnet 400 is restored to its initial position through the oil cylinder 600.

[0101] In this solution, the container 100 is made of magnetic material, or a magnetic plate 120 is provided on the inner wall of the container 100 opposite to the electromagnet 400. The magnetic material can more conveniently utilize the magnetic force generated by the electromagnet 400 to simulate the pressure during transportation, thereby more accurately evaluating the strength and durability of the container 100.

[0102] In this solution, the ratio of the cross-sectional area of ​​the electromagnet 400 to the cross-sectional area of ​​the wall of the container 100 to which it is opposite is 0.9 to 1, so as to ensure that the container 100 is more uniform when subjected to force and avoid damage caused by excessive local force. Preferably, the ratio of the cross-sectional area of ​​the electromagnet 400 to the cross-sectional area of ​​the wall of the container 100 to which it is opposite is 1:1. The cross-sectional area of ​​the electromagnet 400 is determined according to the actual size of the container 100.

[0103] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0104] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed in the present application.

Claims

1. A container strength test system, characterized in that: include: A test bench, the test bench comprising a support portion, two of the support portions being arranged opposite to each other and spaced apart in a left-right direction, and / or two of the support portions being arranged opposite to each other and spaced apart in a front-back direction, the support portion being used to support an underframe of a container and being connected and locked to a bottom corner piece of the container; A load applying assembly, the load applying assembly comprising an electromagnet, the electromagnet being arranged opposite to the container; wherein at least one of the load applying assemblies is located between the opposing support portions, and the load applying assembly is used to apply a test load to the bottom of the container; At least one of the load applying assemblies is located on a side of the container, and the load applying assembly is used to apply a test load to the side of the container; At least one of the load applying assemblies is located at an end of the container, and the load applying assembly is used to apply a test load to the end of the container.

2. The container strength testing system according to claim 1, characterized in that: The container strength test system further comprises a bracket, wherein the bracket is opposite to the side and the end of the container, and the electromagnet is fixedly connected to the test bench and the bracket.

3. The container strength testing system according to claim 2, characterized in that: Different magnetic forces are generated by regulating the intensity of the current flowing through the electromagnet to apply a target load to the container; The electromagnet is spaced apart from the container.

4. The container strength testing system according to claim 3, characterized in that: The load applied by the electromagnet to the container is: F=(μ0*N 2 *I 2 *A) / (2*g 2 ); Where μ0 is the magnetic permeability in vacuum; N is the number of turns of the coil of the electromagnet; I is the current passing through the coil, A; A is the cross-sectional area of ​​the coil, m 2 ; G is the distance between the electromagnet and the container, m.

5. The container strength testing system according to claim 2 or 3, characterized in that: The load applying assembly further comprises a tension gauge, wherein one or more tension gauges are connected to a side of the electromagnet facing away from the container, the tension gauges are connected between the electromagnet and the test bench, or the tension gauges are connected between the electromagnet and the bracket.

6. The container strength testing system according to claim 5, characterized in that: The load applied by the electromagnet to the container is: F = ∑ F1; Wherein, F1 is the reading of a single dynamometer.

7. The container strength testing system according to claim 2, characterized in that: The load applying assembly further comprises an oil cylinder, one or more oil cylinders are connected to the side of the electromagnet facing away from the container, the oil cylinders are connected between the electromagnet and the test bench, or the oil cylinders are connected between the electromagnet and the bracket; The electromagnet is in contact with or spaced from the container.

8. The container strength testing system according to claim 7, characterized in that: The load applied by the electromagnet to the container is: F = N*P*S+G; Where N is the number of oil cylinders; S is the cross-sectional area of ​​the cylinder end surface, m 2 ; P is the reading of the oil cylinder; G is the weight of the electromagnet, kg.

9. The container strength testing system according to claim 1, characterized in that: The container is made of magnetic material, or a magnetic plate is provided on the inner wall of the container opposite to the electromagnet.

10. The container strength testing system according to claim 1, characterized in that: The ratio of the cross-sectional area of ​​the electromagnet to the cross-sectional area of ​​the wall of the container opposite to the electromagnet is 0.9-1.

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