Mechanical in-situ test experimental device with multi-working-condition simulation coupling effect

Abstract

The invention provides a mechanical in-situ test experimental device with a multi-working-condition simulation coupling effect, and belongs to the field of mechanical testing. The problems that an existing mechanical property testing device can only simulate single environment characteristics and cannot test various mechanical properties are solved. Wherein the linear sliding table is connected with the mobile platform through the mounting bracket, the upper end of the connecting rod is fixedly connected to the mobile platform, and the lower end is positioned in the box body; any one of one of the stretching and fatigue experiment clamp, the bearing platform and the bending pressing table can be mounted on a bottom plate of the box body, and any one of the other stretching and fatigue experiment clamp, the compression pressing head, the hardness measuring head, the bending pressing head and the impact testing head assembly can be mounted at the lower end of the connecting rod; the environment simulation assembly can simulate the temperature, humidity and salt mist environment of actual working conditions in the box body; the in-situ monitoring assembly can be used for monitoring the to-be-tested sample in the box body in real time. The device can simultaneously simulate a plurality of actual working conditions and coupling working conditions of actual loads, and can complete a plurality of mechanical property tests.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical testing, and in particular relates to a mechanical in-situ testing experimental device with multi-working condition simulation coupling effect. Background Art

[0002] With the continuous advancement of science and technology and the widespread application of new materials in key fields such as aerospace, automotive industry, and civil engineering, more stringent requirements have been put forward for the mechanical properties of these materials under complex environmental conditions. However, existing mechanical properties testing devices are often limited to operations in standardized laboratory environments, or can only simulate changes in a single environmental factor, resulting in the inability to fully and accurately reflect the performance of materials in actual applications.

[0003] Specifically, the main deficiencies of existing mechanical properties testing devices include: 1. Limitations of single factor simulation: Most test devices can only simulate single environmental parameters such as temperature and humidity, and cannot effectively simulate the comprehensive effects of multiple factors interacting.

[0004] 2. Narrow range of test conditions: Existing test equipment is usually only applicable to a specific temperature or humidity range and cannot cover all conditions that the material may encounter in real application scenarios.

[0005] 3. Low degree of functional modularity: It is difficult for a single test system to integrate multiple test functions and lacks the ability to flexibly expand, which limits the possibility of comprehensive mechanical property evaluation of different materials.

[0006] Therefore, there is an urgent need for a test experimental device that can simulate the coupling effects of multiple environmental characteristics on the material samples to be tested and perform multiple mechanical property tests, so as to achieve accurate evaluation of the mechanical properties of the material to be tested under complex environmental conditions. Summary of the invention

[0007] In view of this, in order to solve the problem that the existing mechanical property testing device can only simulate a single environmental feature and cannot perform multiple mechanical property tests, the present invention proposes a mechanical in-situ testing experimental device with multi-working condition simulation coupling effect.

[0008] To achieve the above object, the present invention adopts the following technical solutions: A mechanical in-situ test experimental device with multi-condition simulation coupling, comprising: A box body, a mounting bracket and a linear slide, wherein the linear slide is arranged on the top of the box body through the mounting bracket, the linear slide extends in a vertical direction, and a bottom plate is arranged at the bottom of the box body; A mobile platform, wherein the mobile platform is arranged on a slider of the linear slide; A connecting rod, the connecting rod is slidably arranged on the upper wall of the box body, the upper end of the connecting rod is fixedly connected to the mobile platform, and the lower end of the connecting rod is located in the box body; A load loading assembly, including two tensile and fatigue test fixtures, a load-bearing platform, a compression indenter, a hardness measuring head, a bending press table, a bending indenter, and an impact test head assembly, wherein any one of the tensile and fatigue test fixtures, the load-bearing platform, and the bending press table can be installed on the bottom plate of the box, and any one of the other tensile and fatigue test fixtures, the compression indenter, the hardness measuring head, the bending indenter, and the impact test head assembly can be installed on the lower end of the connecting rod; Environmental simulation components can simulate the temperature, humidity and salt spray environment of actual working conditions in the box; The in-situ monitoring component can monitor the test samples in the box in real time.

[0009] As a preferred solution of the above-mentioned mechanical in-situ test experimental device with multi-working condition simulation coupling, the environmental simulation component includes a refrigeration device, a heating device, a corrosive gas vent valve and a humid air vent valve. The refrigeration device and the heating device are both arranged in the box, the corrosive gas vent valve and the humid air vent valve are both arranged in the box, the corrosive gas vent valve can introduce corrosive gas into the box, and the humid air vent valve can introduce humid air into the box.

[0010] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, a preferred solution of the mechanical in-situ testing experimental device with multi-working condition simulation coupling also includes an environmental monitoring component, which includes a temperature sensor, a humidity sensor and a salt spray sensor, and the temperature sensor, the humidity sensor and the salt spray sensor are all arranged in the box.

[0011] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the in-situ monitoring component includes a base, an azimuth turntable, a pitch turntable, a high-speed camera and an infrared thermal imaging device. The azimuth turntable is arranged on the base, the pitch turntable is arranged on the azimuth turntable, the high-speed camera and the infrared thermal imaging device are both fixedly arranged on the pitch turntable, and the box is provided with a visual window, and the high-speed camera and the infrared thermal imaging device can monitor the test samples in the box through the visual window.

[0012] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, a strain gauge is installed on the side of the carrying platform, and a first force sensor is installed on the bottom of the carrying platform.

[0013] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the tensile and fatigue experimental fixture includes a clamping structure, a movable clamp, a second force sensor, a first displacement sensor and an electric push rod. The clamping structure includes two fixed clamps and a connecting plate. The two fixed clamps are parallel and spaced along a first direction. The two ends of the connecting plate are respectively fixedly connected to the two fixed clamps. The movable clamp is slidably arranged on the connecting plate. The movable clamp is arranged parallel to the fixed clamp. The electric push rod is arranged between one of the fixed clamps and the movable clamp. The electric push rod can push the movable clamp to slide along the first direction. The first displacement sensor can detect the displacement of the movable clamp. The second force sensor can detect the clamping force between the movable clamp and the other fixed clamp. The sample to be tested can be clamped between the movable clamp and the other fixed clamp.

[0014] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the bending press platform includes an L-shaped press platform, a movable press seat, two press plates and a limit member. The L-shaped press platform includes a vertically and fixedly arranged fixed press seat and a slideway. The movable press seat is slidably arranged on the slideway, and the limit member is slidably arranged on the slideway. The limit member can abut against one end of the mobile press seat away from the fixed press seat. One end of the sample to be tested is clamped between one press plate and the fixed press seat, and the other end is clamped between the other press plate and the movable press seat.

[0015] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the impact test head assembly includes an impact head and an impact fixture, the impact fixture includes an outer tube and an electromagnet, the electromagnet is located in the outer tube, the impact head is inserted into the outer tube, and the electromagnet can magnetically attract the impact head.

[0016] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the mechanical in-situ testing experimental device with multi-working condition simulation coupling also includes a second displacement sensor and a third force sensor, the second displacement sensor can detect the displacement of the mobile platform, and the third force sensor can detect the force exerted on the connecting rod.

[0017] As a preferred solution of the above-mentioned mechanical in-situ testing experimental device with multi-working condition simulation coupling, the mechanical in-situ testing experimental device with multi-working condition simulation coupling also includes a sealing guide device, which is arranged between the box and the connecting rod.

[0018] As a preferred solution of the above-mentioned mechanical in-situ test experimental device with multi-working condition simulation coupling, the bottom plate of the box is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals.

[0019] Compared with the prior art, the beneficial effects of the mechanical in-situ test experimental device with multi-working condition simulation coupling provided by the present invention are: The present invention provides a mechanical in-situ test experimental device with multi-condition simulation coupling effect, which can simulate a plurality of actual working conditions and coupling conditions of actual loads at the same time, and provide a more realistic test environment. Different working condition parameters, such as temperature, humidity, salt spray, etc., can be adjusted and set according to experimental requirements to simulate complex actual use conditions. Moreover, one device can complete a variety of mechanical property tests on the test sample, such as tension, compression, fatigue, bending, hardness and impact, etc., which greatly improves the test efficiency. Moreover, the provided fixture is adapted to test samples of different shapes and sizes, ensuring the diversity and accuracy of the test.

[0020] In addition, the tensile and fatigue test fixtures use intelligent clamping to avoid damage to the test sample due to excessive or insufficient clamping force or slipping of the test sample during the tensile process; real-time feedback of the entire process can be obtained during tensile, compression, impact, hardness, and fatigue tests, which is conducive to exploring the failure mechanism of materials; integrated high-speed cameras and infrared thermal imaging devices, the high-speed camera can capture the subtle changes of the test sample during the stress process and provide high-resolution dynamic images. The infrared thermal imaging device can monitor the temperature distribution changes of the test sample during the stress process to help evaluate the thermal properties and thermal stability of the material.

[0021] In addition, the modular design makes the assembly and disassembly of the equipment very convenient, allowing users to quickly replace and maintain parts. It is easy to operate and low-cost. New test functions and modules can be added as needed through simple hardware replacement, which facilitates integration and subsequent function addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 2 It is a cross-sectional view of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of an in-situ monitoring component of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 4 It is a structural schematic diagram of a tensile and fatigue test fixture of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 5It is a structural schematic diagram of a bending press table of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 6 It is a structural schematic diagram of a bearing platform of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 7 It is a structural schematic diagram of a bending pressure head of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Figure 8 It is a structural schematic diagram of a hardness measuring head of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a compression head of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Fig.10 It is a structural schematic diagram of an impact fixture of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Fig.11 It is a structural schematic diagram of an impact head of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Fig.12 It is a structural schematic diagram of a box of a mechanical in-situ test experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention; Fig.13 It is a structural schematic diagram of the bottom plate of a box of a mechanical in-situ testing experimental device with multi-working condition simulation coupling provided by a specific embodiment of the present invention.

[0023] In the figure: 1. Box body; 101. Bottom plate; 2. Install the bracket; 3. Linear slide; 4. Mobile platform; 51. Base; 52. Azimuth turntable; 53. Pitch turntable; 54. High-speed camera; 55. Infrared thermal imaging device; 61. Fixed clamping plate; 62. Connecting plate; 63. Moving clamping plate; 64. Second force sensor; 65. First displacement sensor; 66. Electric push rod; 71. Fixed pressing seat; 72. Slideway; 73. Moving pressing seat; 74. Pressing plate; 75. Limiting member; 81. bearing platform; 82. first force sensor; 83. strain gauge; 91. Refrigeration device; 92. Heating device; 93. Corrosive gas vent valve; 94. Humidity air vent valve; 10. Bend the pressure head; 11. Hardness measuring head; 12. Compression head; 13. Impact fixture; 14. Impact head; 15. Environmental monitoring components; 16. Sealing guide device; 17. Connecting rod; 18. A second displacement sensor; 19. The third force sensor. DETAILED DESCRIPTION The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0027] See also Figure 1-13 Description of this embodiment. The present invention provides a mechanical in-situ test experimental device with multi-working condition simulation coupling effect. The mechanical in-situ test experimental device with multi-working condition simulation coupling effect includes a box 1, a mounting bracket 2, a linear slide 3, a mobile platform 4, a connecting rod 17, a load loading component, an environmental simulation component and an in-situ monitoring component. The linear slide 3 is arranged above the box 1 through the mounting bracket 2. The linear slide 3 extends in the vertical direction. A bottom plate 101 is provided at the bottom of the box 1; the mobile platform 4 is arranged on the slider of the linear slide 3; the connecting rod 17 is slidably penetrated through the upper wall of the box 1, and the upper end of the connecting rod 17 is fixedly connected to the mobile platform 4, and the lower end is located at the box. 1; the load loading assembly includes two tensile and fatigue test fixtures, a load-bearing platform 81, a compression press head 12, a hardness measuring head 11, a bending press table, a bending press head 10, and an impact test head assembly, wherein any one of the tensile and fatigue test fixture, the load-bearing platform 81 and the bending press table can be installed on the bottom plate 101 of the box body 1, and any one of the other tensile and fatigue test fixture, the compression press head 12, the hardness measuring head 11, the bending press head 10 and the impact test head assembly can be installed on the lower end of the connecting rod 17; the environmental simulation assembly can simulate the temperature, humidity and salt spray environment of the actual working conditions in the box body 1; the in-situ monitoring assembly can perform real-time monitoring of the test sample in the box body 1.

[0028] In the mechanical in-situ test experimental device with multi-working condition simulation coupling, the linear slide 3 drives the connecting rod 17 to move in the vertical direction through the mobile platform 4, and the connecting rod 17 is arranged on the top of the box 1, and the lower end of the connecting rod 17 is located inside the box 1. The mechanical in-situ test experimental device with multi-working condition simulation coupling can perform tensile test, fatigue test, bending test, compression test, hardness test and impact test on the test sample. When performing tensile test or fatigue test, two tensile and fatigue test fixtures are respectively connected to the lower end of the connecting rod 17 and the bottom of the box 1, and the two tensile and fatigue test fixtures can clamp the two ends of the test sample respectively. When performing compression test, hardness test and impact test, the compression pressure head 12, hardness measuring head 11 and impact test head assembly are respectively connected at the lower end of the connecting rod 17, and the bearing platform 81 is installed at the bottom of the box 1. The test sample is placed on the bearing platform 81, and the test sample is subjected to compression test, hardness test and impact test through the movement of the compression pressure head 12, hardness measuring head 11 or impact test head assembly. When performing the bending test, the lower end of the connecting rod 17 is connected to the bending pressure head 10, and a bending pressure table is installed at the bottom of the box 1. The environmental simulation component is used to simulate a variety of actual working conditions including temperature, humidity, and salt spray corrosion in the box 1. The temperature, humidity, and salt spray corrosion environment can appear separately or simultaneously in the box 1, ensuring that the test conditions are as close as possible to the actual use scenario of the material to be tested. The in-situ monitoring component can monitor the test sample in the box 1 in real time, monitor the experimental process in situ through multi-spectral technology, and deeply explore the service damage mechanism of the parts.

[0029] Optionally, the environmental simulation component includes a refrigeration device 91, a heating device 92, a corrosive gas vent valve 93 and a humid air vent valve 94. The refrigeration device 91 and the heating device 92 are both arranged in the box 1. The corrosive gas vent valve 93 and the humid air vent valve 94 are both arranged in the box 1. The corrosive gas vent valve 93 can pass corrosive gas into the box 1, and the humid air vent valve 94 can pass humid air into the box 1. The refrigeration device 91 and the heating device 92 can change the temperature in the box 1. The refrigeration device 91 uses Peltier cooling. The heating device 92 uses resistance wire for heating. The corrosive gas vent valve 93 can pass corrosive gas into the box 1, which can simulate a salt spray environment. The humid air vent valve 94 can pass humid air into the box 1, which can change the humidity in the box 1. The corrosive gas vent valve 93 and the humid air vent valve 94 are both one-way valves.

[0030] Optionally, the box body 1 is further provided with an electrical connector, and the devices in the box body 1 that need to be electrically connected to the outside are connected via the electrical connector, thereby ensuring the sealing and safety of the box body 1.

[0031] Optionally, a preferred solution of the mechanical in-situ test experimental device with multi-condition simulation coupling also includes an environmental monitoring component 15, which includes a temperature sensor, a humidity sensor and a salt spray sensor, and the temperature sensor, the humidity sensor and the salt spray sensor are all arranged in the box 1. The temperature sensor, the humidity sensor and the salt spray sensor are used to detect the temperature, humidity and salt spray conditions in the box 1 respectively, and are used for negative feedback regulation.

[0032] Optionally, the in-situ monitoring assembly includes a base 51, an azimuth turntable 52, a pitch turntable 53, a high-speed camera 54 and an infrared thermal imaging device 55, the azimuth turntable 52 is arranged on the base 51, the pitch turntable 53 is arranged on the azimuth turntable 52, the high-speed camera 54 and the infrared thermal imaging device 55 are both fixedly arranged on the pitch turntable 53, the box 1 is provided with a visual window, and the high-speed camera 54 and the infrared thermal imaging device 55 can monitor the sample to be tested in the box 1 through the visual window. During the test, the state of the sample to be tested is monitored in real time and continuously. Combined with the experimental process data provided by various sensors during the experiment, it is helpful to deeply understand the behavior of the material under complex working conditions and its evolution mechanism. The azimuth turntable 52 can drive the pitch turntable 53 to rotate 360° in the horizontal direction, and the pitch turntable 53 can adjust the height and angle of the high-speed camera 54 and the infrared thermal imaging device 55. The position and angle of the optical path are adjusted by the azimuth turntable 52 and the pitch turntable 53 to accurately monitor the experimental process.

[0033] Optionally, a strain gauge 83 is installed on the side of the carrying platform 81, and a first force sensor 82 is installed on the bottom of the carrying platform 81. The carrying platform 81 can be used for compression testing, impact testing, and hardness testing. The strain gauge 83 is installed on the side of the carrying platform 81, and the first force sensor 82 is installed on the bottom to detect the experimental data in the compression, impact, and hardness tests. The pressing speed and force can be obtained in real time, and the pressing mode can be adjusted according to the experimental object and experimental requirements. The pressing mode includes constant pressure pressing, constant speed pressing, etc.

[0034] Optionally, the tensile and fatigue test fixture includes a clamping structure, a movable clamping plate 63, a second force sensor 64, a first displacement sensor 65 and an electric push rod 66. The clamping structure includes two fixed clamping plates 61 and a connecting plate 62. The two fixed clamping plates 61 are parallel and spaced apart along a first direction. The two ends of the connecting plate 62 are respectively fixedly connected to the two fixed clamping plates 61. The movable clamping plate 63 is slidably arranged on the connecting plate 62. The movable clamping plate 63 is arranged parallel to the fixed clamping plate 61. The electric push rod 66 is arranged between one of the fixed clamping plates 61 and the movable clamping plate 63. The electric push rod 66 can push the movable clamping plate 63 to slide along the first direction. The first displacement sensor 65 can detect the displacement of the movable clamping plate 63. The second force sensor 64 can detect the clamping force between the movable clamping plate 63 and the other fixed clamping plate 61. The sample to be tested can be clamped between the movable clamping plate 63 and the other fixed clamping plate 61.

[0035] The sample to be tested can be clamped between the movable clamping plate 63 and another fixed clamping plate 61. The two tension and fatigue test fixtures are distributed up and down and clamp the two ends of the sample to be tested respectively. The tension test is performed by controlling the linear slide 3 to drive the tension and fatigue test fixture located above to move up and down, and the fatigue test is performed by controlling the linear slide 3 to drive the tension and fatigue test fixture located above to move up and down.

[0036] Most of the clamping force of the prior art is mainly manual force. When clamping materials, it is easy for human operating errors to cause excessive clamping force, resulting in microcracks in the test sample, or too little clamping force, resulting in slipping and experimental errors. In this embodiment, the stretching and fatigue test fixture adds a movable clamp 63, a second force sensor 64, a first displacement sensor 65, and an electric push rod 66. According to different material properties, the appropriate clamping force and displacement can be selected. During the clamping and stretching process, the displacement of the electric push rod 66 can be adjusted in real time through the data fed back by the second force sensor 64 and the first displacement sensor 65, which can ensure that the clamping method is consistent each time, and the experiment is more accurate, and the stretching speed and stretching force can be obtained in real time. And the stretching mode can be adjusted according to the experimental object and experimental requirements. The stretching mode includes fixed tension stretching, fixed speed stretching, etc.

[0037] It can be understood that the electric push rod 66 is a micro electric push rod 66 .

[0038] Optionally, the movable clamping plate 63 and the fixed clamping plate 61 for clamping the sample to be tested are both provided with anti-slip patterns on the side close to the sample to be tested to increase friction.

[0039] Optionally, the bending press platform includes an L-shaped press platform, a movable press seat 73, two press plates 74 and a stopper 75. The L-shaped press platform includes a vertical and fixed fixed press seat 71 and a slideway 72. The movable press seat 73 is slidably arranged on the slideway 72. The stopper 75 is slidably arranged on the slideway 72. The stopper 75 can abut against one end of the movable press seat 73 away from the fixed press seat 71. One end of the sample to be tested is clamped between one of the press plates 74 and the fixed press seat 71, and the other end is clamped between the other press plate 74 and the movable press seat 73. The distance between the movable press seat 73 and the fixed press seat 71 is adjusted according to the length of the sample to be tested. After the movable press seat 73 slides to a suitable position, the stopper 75 slides to the side of the movable press seat 73 away from the fixed press seat 71, and can limit the movable press seat 73. One end of the sample to be tested is clamped between one of the press plates 74 and the fixed press seat 71, and the other end is clamped between the other press plate 74 and the movable press seat 73. The space between the fixed pressing seat 71 and the movable pressing seat 73 is hollow, and when the bending pressing head 10 falls, the middle part of the sample to be tested can be bent downward.

[0040] Optionally, the impact test head assembly includes an impact head 14 and an impact fixture 13, and the impact fixture 13 includes an outer cylinder and an electromagnet. The electromagnet is located in the outer cylinder, and the impact head 14 is inserted into the outer cylinder. The electromagnet can magnetically attract the impact head 14. The outer cylinder can be connected to the lower end of the connecting rod 17, and the impact head 14 is inserted into the outer cylinder and attracted by the electromagnet. It can be understood that the impact head 14 faces downward. When the impact test is performed, the linear slide 3 drives the impact test head assembly to rise to a set height, and the electromagnet is powered off. The impact head 14 loses its magnetic attraction and falls, and impacts the sample to be tested on the bearing platform 81. The outer cylinder is a hollow cylindrical cylinder, which can guide the movement of the impact head 14, so that the impact head 14 falls vertically, and the installation position and impact position of the impact head 14 can be ensured to be accurate. The strain gauge 83 below the bearing platform 81 during the impact process can monitor the displacement change of the bearing platform 81. The first force sensor 82 can monitor the change of force. The real-time change of displacement and force is the experimental data of the impact process, and the impact resistance of the material can be obtained.

[0041] When performing a hardness test, the sample to be tested is placed on the carrying platform 81, and the linear slide 3 drives the hardness measuring head 11 to move downward to mark the sample to be tested. The hardness can be obtained based on the feedback of speed and force during the marking. The traditional hardness measuring device obtains the hardness based on the pressed shape. The test experimental device in this embodiment obtains the hardness based on the feedback of force and speed during the pressing process. Under a constant speed, the greater the hardness, the greater the force; under a constant pressure, the greater the hardness, the faster the speed.

[0042] Optionally, the mechanical in-situ test experimental device with multi-working condition simulation coupling also includes a second displacement sensor 18 and a third force sensor 19, wherein the second displacement sensor 18 can detect the displacement of the mobile platform 4, and the third force sensor 19 can detect the force exerted on the connecting rod 17. A displacement measurement auxiliary plate is provided on the mobile platform 4, and the second displacement sensor 18 determines the displacement of the mobile platform 4 by detecting the displacement of the displacement measurement auxiliary plate.

[0043] Optionally, the mechanical in-situ test experimental device with multi-working condition simulation coupling effect further includes a sealing guide device 16, which is arranged between the box body 1 and the connecting rod 17. The sealing guide device 16 can seal the gap between the box body 1 and the connecting rod 17, and can guide the connecting rod 17 so that the movement of the connecting rod 17 remains in the vertical direction.

[0044] Optionally, the bottom plate 101 of the box body 1 is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals. Providing more mounting holes facilitates subsequent integration of other environmental loads.

[0045] This mechanical in-situ test experimental device with multi-condition simulation coupling can simulate a variety of actual working conditions including temperature, humidity, and salt spray corrosion environment, and perform a variety of mechanical performance tests including tension, fatigue, bending, compression, hardness, and impact in this environment, aiming to comprehensively evaluate the mechanical response of the material. It provides an efficient, flexible, accurate, and multifunctional platform that meets the needs of mechanical performance evaluation of different materials and is used to deeply explore the mechanical behavior and mechanism of materials under complex environmental conditions.

[0046] This mechanical in-situ test experimental device with multi-condition simulation coupling can simulate multiple actual working conditions and coupled working conditions of actual loads at the same time, providing a more realistic test environment. Different working condition parameters, such as temperature, humidity, salt spray, etc., can be adjusted and set according to experimental requirements to simulate complex actual use conditions. Moreover, one device can complete multiple mechanical property tests on the test sample, such as tension, compression, fatigue, bending, hardness and impact, etc., greatly improving the test efficiency. Moreover, the provided fixture is suitable for test samples of different shapes and sizes to ensure the diversity and accuracy of the test.

[0047] Moreover, the tensile and fatigue test fixtures use intelligent clamping to avoid damage to the test sample due to excessive or insufficient clamping force or slipping of the test sample during the tensile process; real-time feedback of the entire process can be obtained during tensile, compression, impact, hardness, and fatigue tests, which is conducive to exploring the failure mechanism of materials; the high-speed camera 54 and infrared thermal imaging device 55 are integrated, and the high-speed camera 54 can capture subtle changes in the test sample during the stress process and provide high-resolution dynamic images. The infrared thermal imaging device 55 can monitor the temperature distribution changes of the test sample during the stress process to help evaluate the thermal properties and thermal stability of the material.

[0048] In addition, the modular design makes the assembly and disassembly of the equipment very convenient, allowing users to quickly replace and maintain parts. It is easy to operate and low-cost. New test functions and modules can be added as needed through simple hardware replacement, which facilitates integration and subsequent function addition.

[0049] Obviously, the embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. It is not necessary and impossible to exhaustively list all the embodiments here.

Claims

1. A mechanical in-situ test experimental device with multi-condition simulation coupling, characterized in that: include: A box body (1), a mounting bracket (2) and a linear slide (3), wherein the linear slide (3) is arranged above the box body (1) through the mounting bracket (2), the linear slide (3) extends in a vertical direction, and a bottom plate (101) is provided at the bottom of the box body (1); A mobile platform (4), the mobile platform (4) is arranged on a slider of the linear slide (3); A connecting rod (17), the connecting rod (17) is slidably disposed on the upper wall of the box body (1), the upper end of the connecting rod (17) is fixedly connected to the moving platform (4), and the lower end is located inside the box body (1); A load loading assembly comprises two tensile and fatigue test fixtures, a load-bearing platform (81), a compression press head (12), a hardness measuring head (11), a bending press table, a bending press head (10), and an impact test head assembly, wherein any one of the tensile and fatigue test fixture, the load-bearing platform (81) and the bending press table can be installed on the bottom plate (101) of the box body (1), and any one of the other tensile and fatigue test fixture, the compression press head (12), the hardness measuring head (11), the bending press head (10), and the impact test head assembly can be installed on the lower end of the connecting rod (17); An environmental simulation component capable of simulating the temperature, humidity and salt spray environment of actual working conditions in the box (1); The in-situ monitoring component can monitor the sample to be tested in the box (1) in real time.

2. The mechanical in-situ test experimental device with multi-condition simulation coupling according to claim 1 is characterized in that: The environmental simulation component comprises a refrigeration device (91), a heating device (92), a corrosive gas ventilation valve (93) and a humid air ventilation valve (94); the refrigeration device (91) and the heating device (92) are both arranged in a box body (1); the corrosive gas ventilation valve (93) and the humid air ventilation valve (94) are both arranged in the box body (1); the corrosive gas ventilation valve (93) can introduce corrosive gas into the box body (1); and the humid air ventilation valve (94) can introduce humid air into the box body (1).

3. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: It also includes an environmental monitoring component (15), which includes a temperature sensor, a humidity sensor and a salt spray sensor, and the temperature sensor, the humidity sensor and the salt spray sensor are all arranged in the box (1).

4. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: The in-situ monitoring component comprises a base (51), an azimuth turntable (52), a pitch turntable (53), a high-speed camera (54) and an infrared thermal imaging device (55); the azimuth turntable (52) is arranged on the base (51); the pitch turntable (53) is arranged on the azimuth turntable (52); the high-speed camera (54) and the infrared thermal imaging device (55) are both fixedly arranged on the pitch turntable (53); the box (1) is provided with a visual window; the high-speed camera (54) and the infrared thermal imaging device (55) can monitor the sample to be tested in the box (1) through the visual window.

5. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: A strain gauge (83) is installed on the side of the carrying platform (81), and a first force sensor (82) is installed on the bottom of the carrying platform (81).

6. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: The tensile and fatigue test fixture comprises a clamping structure, a movable clamping plate (63), a second force sensor (64), a first displacement sensor (65) and an electric push rod (66); the clamping structure comprises two fixed clamping plates (61) and a connecting plate (62); the two fixed clamping plates (61) are arranged in parallel and at intervals along a first direction; the two ends of the connecting plate (62) are respectively fixedly connected to the two fixed clamping plates (61); the movable clamping plate (63) is slidably arranged on the connecting plate (62); the movable clamping plate (63) and the fixed clamping plate (61) are connected to each other. The clamping plates (61) are arranged in parallel, and an electric push rod (66) is arranged between one of the fixed clamping plates (61) and the movable clamping plate (63). The electric push rod (66) can push the movable clamping plate (63) to slide along a first direction. The first displacement sensor (65) can detect the displacement of the movable clamping plate (63). The second force sensor (64) can detect the clamping force between the movable clamping plate (63) and the other fixed clamping plate (61). The sample to be tested can be clamped between the movable clamping plate (63) and the other fixed clamping plate (61).

7. The mechanical in-situ testing experimental device with multi-condition simulation coupling according to claim 1 is characterized in that: The bending press platform comprises an L-shaped press platform, a movable press seat (73), two press plates (74) and a limiter (75); the L-shaped press platform comprises a fixed press seat (71) and a slideway (72) which are vertically and fixedly connected; the movable press seat (73) is slidably arranged on the slideway (72); the limiter (75) is slidably arranged on the slideway (72); the limiter (75) can abut against one end of the movable press seat (73) away from the fixed press seat (71); one end of the sample to be tested is clamped between one press plate (74) and the fixed press seat (71); and the other end is clamped between the other press plate (74) and the movable press seat (73).

8. The mechanical in-situ testing experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: The impact test head assembly comprises an impact head (14) and an impact fixture (13); the impact fixture (13) comprises an outer tube and an electromagnet; the electromagnet is located inside the outer tube; the impact head (14) is inserted into the outer tube; and the electromagnet can magnetically attract the impact head (14).

9. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: It also includes a second displacement sensor (18) and a third force sensor (19), wherein the second displacement sensor (18) can detect the displacement of the mobile platform (4), and the third force sensor (19) can detect the force exerted on the connecting rod (17).

10. The mechanical in-situ test experimental device with multi-working condition simulation coupling according to claim 1 is characterized in that: It also comprises a sealing guide device (16), wherein the sealing guide device (16) is arranged between the box body (1) and the connecting rod (17).

Images